File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.1165:
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Tue Apr 24 20:31:59 2012 UTC (12 years, 2 months ago) by
droeschl
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Removed unused $range parameter from dump_dom because it's going to be
eliminated in dump and lond's dump_with_regexp shortly.
Also, refactoring of dump_dom to avoid unnecessary copy of hash.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1165 2012/04/24 20:31:59 droeschl 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: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
80: %managerstab);
81:
82: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
83: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
84: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
85: %courseownerbuf, %coursetypebuf,$locknum);
86:
87: use IO::Socket;
88: use GDBM_File;
89: use HTML::LCParser;
90: use Fcntl qw(:flock);
91: use Storable qw(thaw nfreeze);
92: use Time::HiRes qw( gettimeofday tv_interval );
93: use Cache::Memcached;
94: use Digest::MD5;
95: use Math::Random;
96: use File::MMagic;
97: use LONCAPA qw(:DEFAULT :match);
98: use LONCAPA::Configuration;
99: use LONCAPA::lonmetadata;
100:
101: use File::Copy;
102:
103: my $readit;
104: my $max_connection_retries = 10; # Or some such value.
105:
106: require Exporter;
107:
108: our @ISA = qw (Exporter);
109: our @EXPORT = qw(%env);
110:
111:
112: # --------------------------------------------------------------------- Logging
113: {
114: my $logid;
115: sub instructor_log {
116: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
117: if (($cnum eq '') || ($cdom eq '')) {
118: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
119: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
120: }
121: $logid++;
122: my $now = time();
123: my $id=$now.'00000'.$$.'00000'.$logid;
124: return &Apache::lonnet::put('nohist_'.$hash_name,
125: { $id => {
126: 'exe_uname' => $env{'user.name'},
127: 'exe_udom' => $env{'user.domain'},
128: 'exe_time' => $now,
129: 'exe_ip' => $ENV{'REMOTE_ADDR'},
130: 'delflag' => $delflag,
131: 'logentry' => $storehash,
132: 'uname' => $uname,
133: 'udom' => $udom,
134: }
135: },$cdom,$cnum);
136: }
137: }
138:
139: sub logtouch {
140: my $execdir=$perlvar{'lonDaemons'};
141: unless (-e "$execdir/logs/lonnet.log") {
142: open(my $fh,">>$execdir/logs/lonnet.log");
143: close $fh;
144: }
145: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
146: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
147: }
148:
149: sub logthis {
150: my $message=shift;
151: my $execdir=$perlvar{'lonDaemons'};
152: my $now=time;
153: my $local=localtime($now);
154: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
155: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
156: print $fh $logstring;
157: close($fh);
158: }
159: return 1;
160: }
161:
162: sub logperm {
163: my $message=shift;
164: my $execdir=$perlvar{'lonDaemons'};
165: my $now=time;
166: my $local=localtime($now);
167: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
168: print $fh "$now:$message:$local\n";
169: close($fh);
170: }
171: return 1;
172: }
173:
174: sub create_connection {
175: my ($hostname,$lonid) = @_;
176: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
177: Type => SOCK_STREAM,
178: Timeout => 10);
179: return 0 if (!$client);
180: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
181: my $result = <$client>;
182: chomp($result);
183: return 1 if ($result eq 'done');
184: return 0;
185: }
186:
187: sub get_server_timezone {
188: my ($cnum,$cdom) = @_;
189: my $home=&homeserver($cnum,$cdom);
190: if ($home ne 'no_host') {
191: my $cachetime = 24*3600;
192: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
193: if (defined($cached)) {
194: return $timezone;
195: } else {
196: my $timezone = &reply('servertimezone',$home);
197: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
198: }
199: }
200: }
201:
202: sub get_server_distarch {
203: my ($lonhost,$ignore_cache) = @_;
204: if (defined($lonhost)) {
205: if (!defined(&hostname($lonhost))) {
206: return;
207: }
208: my $cachetime = 12*3600;
209: if (!$ignore_cache) {
210: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
211: if (defined($cached)) {
212: return $distarch;
213: }
214: }
215: my $rep = &reply('serverdistarch',$lonhost);
216: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
217: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
218: $rep eq '') {
219: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
220: }
221: }
222: return;
223: }
224:
225: sub get_server_loncaparev {
226: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
227: if (defined($lonhost)) {
228: if (!defined(&hostname($lonhost))) {
229: undef($lonhost);
230: }
231: }
232: if (!defined($lonhost)) {
233: if (defined(&domain($dom,'primary'))) {
234: $lonhost=&domain($dom,'primary');
235: if ($lonhost eq 'no_host') {
236: undef($lonhost);
237: }
238: }
239: }
240: if (defined($lonhost)) {
241: my $cachetime = 12*3600;
242: if (!$ignore_cache) {
243: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
244: if (defined($cached)) {
245: return $loncaparev;
246: }
247: }
248: my ($answer,$loncaparev);
249: my @ids=¤t_machine_ids();
250: if (grep(/^\Q$lonhost\E$/,@ids)) {
251: $answer = $perlvar{'lonVersion'};
252: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
253: $loncaparev = $1;
254: }
255: } else {
256: $answer = &reply('serverloncaparev',$lonhost);
257: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
258: if ($caller eq 'loncron') {
259: my $ua=new LWP::UserAgent;
260: $ua->timeout(4);
261: my $protocol = $protocol{$lonhost};
262: $protocol = 'http' if ($protocol ne 'https');
263: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
264: my $request=new HTTP::Request('GET',$url);
265: my $response=$ua->request($request);
266: unless ($response->is_error()) {
267: my $content = $response->content;
268: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
269: $loncaparev = $1;
270: }
271: }
272: } else {
273: $loncaparev = $loncaparevs{$lonhost};
274: }
275: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
276: $loncaparev = $1;
277: }
278: }
279: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
280: }
281: }
282:
283: sub get_server_homeID {
284: my ($hostname,$ignore_cache,$caller) = @_;
285: unless ($ignore_cache) {
286: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
287: if (defined($cached)) {
288: return $serverhomeID;
289: }
290: }
291: my $cachetime = 12*3600;
292: my $serverhomeID;
293: if ($caller eq 'loncron') {
294: my @machine_ids = &machine_ids($hostname);
295: foreach my $id (@machine_ids) {
296: my $response = &reply('serverhomeID',$id);
297: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
298: $serverhomeID = $response;
299: last;
300: }
301: }
302: if ($serverhomeID eq '') {
303: $serverhomeID = $machine_ids[-1];
304: }
305: } else {
306: $serverhomeID = $serverhomeIDs{$hostname};
307: }
308: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
309: }
310:
311: sub get_remote_globals {
312: my ($lonhost,$whathash,$ignore_cache) = @_;
313: my ($result,%returnhash,%whatneeded);
314: if (ref($whathash) eq 'HASH') {
315: foreach my $what (sort(keys(%{$whathash}))) {
316: my $hashid = $lonhost.'-'.$what;
317: my ($response,$cached);
318: unless ($ignore_cache) {
319: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
320: }
321: if (defined($cached)) {
322: $returnhash{$what} = $response;
323: } else {
324: $whatneeded{$what} = 1;
325: }
326: }
327: if (keys(%whatneeded) == 0) {
328: $result = 'ok';
329: } else {
330: my $requested = &freeze_escape(\%whatneeded);
331: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
332: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
333: ($rep eq 'unknown_cmd')) {
334: $result = $rep;
335: } else {
336: $result = 'ok';
337: my @pairs=split(/\&/,$rep);
338: foreach my $item (@pairs) {
339: my ($key,$value)=split(/=/,$item,2);
340: my $what = &unescape($key);
341: my $hashid = $lonhost.'-'.$what;
342: $returnhash{$what}=&thaw_unescape($value);
343: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
344: }
345: }
346: }
347: }
348: return ($result,\%returnhash);
349: }
350:
351: sub remote_devalidate_cache {
352: my ($lonhost,$name,$id) = @_;
353: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
354: return $response;
355: }
356:
357: # -------------------------------------------------- Non-critical communication
358: sub subreply {
359: my ($cmd,$server)=@_;
360: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
361: #
362: # With loncnew process trimming, there's a timing hole between lonc server
363: # process exit and the master server picking up the listen on the AF_UNIX
364: # socket. In that time interval, a lock file will exist:
365:
366: my $lockfile=$peerfile.".lock";
367: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
368: sleep(1);
369: }
370: # At this point, either a loncnew parent is listening or an old lonc
371: # or loncnew child is listening so we can connect or everything's dead.
372: #
373: # We'll give the connection a few tries before abandoning it. If
374: # connection is not possible, we'll con_lost back to the client.
375: #
376: my $client;
377: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
378: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
379: Type => SOCK_STREAM,
380: Timeout => 10);
381: if ($client) {
382: last; # Connected!
383: } else {
384: &create_connection(&hostname($server),$server);
385: }
386: sleep(1); # Try again later if failed connection.
387: }
388: my $answer;
389: if ($client) {
390: print $client "sethost:$server:$cmd\n";
391: $answer=<$client>;
392: if (!$answer) { $answer="con_lost"; }
393: chomp($answer);
394: } else {
395: $answer = 'con_lost'; # Failed connection.
396: }
397: return $answer;
398: }
399:
400: sub reply {
401: my ($cmd,$server)=@_;
402: unless (defined(&hostname($server))) { return 'no_such_host'; }
403: my $answer=subreply($cmd,$server);
404: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
405: &logthis("<font color=\"blue\">WARNING:".
406: " $cmd to $server returned $answer</font>");
407: }
408: return $answer;
409: }
410:
411: # ----------------------------------------------------------- Send USR1 to lonc
412:
413: sub reconlonc {
414: my ($lonid) = @_;
415: my $hostname = &hostname($lonid);
416: if ($lonid) {
417: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
418: if ($hostname && -e $peerfile) {
419: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
420: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
421: Type => SOCK_STREAM,
422: Timeout => 10);
423: if ($client) {
424: print $client ("reset_retries\n");
425: my $answer=<$client>;
426: #reset just this one.
427: }
428: }
429: return;
430: }
431:
432: &logthis("Trying to reconnect lonc");
433: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
434: if (open(my $fh,"<$loncfile")) {
435: my $loncpid=<$fh>;
436: chomp($loncpid);
437: if (kill 0 => $loncpid) {
438: &logthis("lonc at pid $loncpid responding, sending USR1");
439: kill USR1 => $loncpid;
440: sleep 1;
441: } else {
442: &logthis(
443: "<font color=\"blue\">WARNING:".
444: " lonc at pid $loncpid not responding, giving up</font>");
445: }
446: } else {
447: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
448: }
449: }
450:
451: # ------------------------------------------------------ Critical communication
452:
453: sub critical {
454: my ($cmd,$server)=@_;
455: unless (&hostname($server)) {
456: &logthis("<font color=\"blue\">WARNING:".
457: " Critical message to unknown server ($server)</font>");
458: return 'no_such_host';
459: }
460: my $answer=reply($cmd,$server);
461: if ($answer eq 'con_lost') {
462: &reconlonc("$perlvar{'lonSockDir'}/$server");
463: my $answer=reply($cmd,$server);
464: if ($answer eq 'con_lost') {
465: my $now=time;
466: my $middlename=$cmd;
467: $middlename=substr($middlename,0,16);
468: $middlename=~s/\W//g;
469: my $dfilename=
470: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
471: $dumpcount++;
472: {
473: my $dfh;
474: if (open($dfh,">$dfilename")) {
475: print $dfh "$cmd\n";
476: close($dfh);
477: }
478: }
479: sleep 2;
480: my $wcmd='';
481: {
482: my $dfh;
483: if (open($dfh,"<$dfilename")) {
484: $wcmd=<$dfh>;
485: close($dfh);
486: }
487: }
488: chomp($wcmd);
489: if ($wcmd eq $cmd) {
490: &logthis("<font color=\"blue\">WARNING: ".
491: "Connection buffer $dfilename: $cmd</font>");
492: &logperm("D:$server:$cmd");
493: return 'con_delayed';
494: } else {
495: &logthis("<font color=\"red\">CRITICAL:"
496: ." Critical connection failed: $server $cmd</font>");
497: &logperm("F:$server:$cmd");
498: return 'con_failed';
499: }
500: }
501: }
502: return $answer;
503: }
504:
505: # ------------------------------------------- check if return value is an error
506:
507: sub error {
508: my ($result) = @_;
509: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
510: if ($2 == 2) { return undef; }
511: return $1;
512: }
513: return undef;
514: }
515:
516: sub convert_and_load_session_env {
517: my ($lonidsdir,$handle)=@_;
518: my @profile;
519: {
520: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
521: if (!$opened) {
522: return 0;
523: }
524: flock($idf,LOCK_SH);
525: @profile=<$idf>;
526: close($idf);
527: }
528: my %temp_env;
529: foreach my $line (@profile) {
530: if ($line !~ m/=/) {
531: return 0;
532: }
533: chomp($line);
534: my ($envname,$envvalue)=split(/=/,$line,2);
535: $temp_env{&unescape($envname)} = &unescape($envvalue);
536: }
537: unlink("$lonidsdir/$handle.id");
538: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
539: 0640)) {
540: %disk_env = %temp_env;
541: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
542: untie(%disk_env);
543: }
544: return 1;
545: }
546:
547: # ------------------------------------------- Transfer profile into environment
548: my $env_loaded;
549: sub transfer_profile_to_env {
550: my ($lonidsdir,$handle,$force_transfer) = @_;
551: if (!$force_transfer && $env_loaded) { return; }
552:
553: if (!defined($lonidsdir)) {
554: $lonidsdir = $perlvar{'lonIDsDir'};
555: }
556: if (!defined($handle)) {
557: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
558: }
559:
560: my $convert;
561: {
562: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
563: if (!$opened) {
564: return;
565: }
566: flock($idf,LOCK_SH);
567: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
568: &GDBM_READER(),0640)) {
569: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
570: untie(%disk_env);
571: } else {
572: $convert = 1;
573: }
574: }
575: if ($convert) {
576: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
577: &logthis("Failed to load session, or convert session.");
578: }
579: }
580:
581: my %remove;
582: while ( my $envname = each(%env) ) {
583: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
584: if ($time < time-300) {
585: $remove{$key}++;
586: }
587: }
588: }
589:
590: $env{'user.environment'} = "$lonidsdir/$handle.id";
591: $env_loaded=1;
592: foreach my $expired_key (keys(%remove)) {
593: &delenv($expired_key);
594: }
595: }
596:
597: # ---------------------------------------------------- Check for valid session
598: sub check_for_valid_session {
599: my ($r,$name) = @_;
600: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
601: if ($name eq '') {
602: $name = 'lonID';
603: }
604: my $lonid=$cookies{$name};
605: return undef if (!$lonid);
606:
607: my $handle=&LONCAPA::clean_handle($lonid->value);
608: my $lonidsdir;
609: if ($name eq 'lonDAV') {
610: $lonidsdir=$r->dir_config('lonDAVsessDir');
611: } else {
612: $lonidsdir=$r->dir_config('lonIDsDir');
613: }
614: return undef if (!-e "$lonidsdir/$handle.id");
615:
616: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
617: return undef if (!$opened);
618:
619: flock($idf,LOCK_SH);
620: my %disk_env;
621: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
622: &GDBM_READER(),0640)) {
623: return undef;
624: }
625:
626: if (!defined($disk_env{'user.name'})
627: || !defined($disk_env{'user.domain'})) {
628: return undef;
629: }
630: return $handle;
631: }
632:
633: sub timed_flock {
634: my ($file,$lock_type) = @_;
635: my $failed=0;
636: eval {
637: local $SIG{__DIE__}='DEFAULT';
638: local $SIG{ALRM}=sub {
639: $failed=1;
640: die("failed lock");
641: };
642: alarm(13);
643: flock($file,$lock_type);
644: alarm(0);
645: };
646: if ($failed) {
647: return undef;
648: } else {
649: return 1;
650: }
651: }
652:
653: # ---------------------------------------------------------- Append Environment
654:
655: sub appenv {
656: my ($newenv,$roles) = @_;
657: if (ref($newenv) eq 'HASH') {
658: foreach my $key (keys(%{$newenv})) {
659: my $refused = 0;
660: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
661: $refused = 1;
662: if (ref($roles) eq 'ARRAY') {
663: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
664: if (grep(/^\Q$role\E$/,@{$roles})) {
665: $refused = 0;
666: }
667: }
668: }
669: if ($refused) {
670: &logthis("<font color=\"blue\">WARNING: ".
671: "Attempt to modify environment ".$key." to ".$newenv->{$key}
672: .'</font>');
673: delete($newenv->{$key});
674: } else {
675: $env{$key}=$newenv->{$key};
676: }
677: }
678: my $opened = open(my $env_file,'+<',$env{'user.environment'});
679: if ($opened
680: && &timed_flock($env_file,LOCK_EX)
681: &&
682: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
683: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
684: while (my ($key,$value) = each(%{$newenv})) {
685: $disk_env{$key} = $value;
686: }
687: untie(%disk_env);
688: }
689: }
690: return 'ok';
691: }
692: # ----------------------------------------------------- Delete from Environment
693:
694: sub delenv {
695: my ($delthis,$regexp,$roles) = @_;
696: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
697: my $refused = 1;
698: if (ref($roles) eq 'ARRAY') {
699: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
700: if (grep(/^\Q$role\E$/,@{$roles})) {
701: $refused = 0;
702: }
703: }
704: if ($refused) {
705: &logthis("<font color=\"blue\">WARNING: ".
706: "Attempt to delete from environment ".$delthis);
707: return 'error';
708: }
709: }
710: my $opened = open(my $env_file,'+<',$env{'user.environment'});
711: if ($opened
712: && &timed_flock($env_file,LOCK_EX)
713: &&
714: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
715: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
716: foreach my $key (keys(%disk_env)) {
717: if ($regexp) {
718: if ($key=~/^$delthis/) {
719: delete($env{$key});
720: delete($disk_env{$key});
721: }
722: } else {
723: if ($key=~/^\Q$delthis\E/) {
724: delete($env{$key});
725: delete($disk_env{$key});
726: }
727: }
728: }
729: untie(%disk_env);
730: }
731: return 'ok';
732: }
733:
734: sub get_env_multiple {
735: my ($name) = @_;
736: my @values;
737: if (defined($env{$name})) {
738: # exists is it an array
739: if (ref($env{$name})) {
740: @values=@{ $env{$name} };
741: } else {
742: $values[0]=$env{$name};
743: }
744: }
745: return(@values);
746: }
747:
748: # ------------------------------------------------------------------- Locking
749:
750: sub set_lock {
751: my ($text)=@_;
752: $locknum++;
753: my $id=$$.'-'.$locknum;
754: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
755: 'session.lock.'.$id => $text});
756: return $id;
757: }
758:
759: sub get_locks {
760: my $num=0;
761: my %texts=();
762: foreach my $lock (split(/\,/,$env{'session.locks'})) {
763: if ($lock=~/\w/) {
764: $num++;
765: $texts{$lock}=$env{'session.lock.'.$lock};
766: }
767: }
768: return ($num,%texts);
769: }
770:
771: sub remove_lock {
772: my ($id)=@_;
773: my $newlocks='';
774: foreach my $lock (split(/\,/,$env{'session.locks'})) {
775: if (($lock=~/\w/) && ($lock ne $id)) {
776: $newlocks.=','.$lock;
777: }
778: }
779: &appenv({'session.locks' => $newlocks});
780: &delenv('session.lock.'.$id);
781: }
782:
783: sub remove_all_locks {
784: my $activelocks=$env{'session.locks'};
785: foreach my $lock (split(/\,/,$env{'session.locks'})) {
786: if ($lock=~/\w/) {
787: &remove_lock($lock);
788: }
789: }
790: }
791:
792:
793: # ------------------------------------------ Find out current server userload
794: sub userload {
795: my $numusers=0;
796: {
797: opendir(LONIDS,$perlvar{'lonIDsDir'});
798: my $filename;
799: my $curtime=time;
800: while ($filename=readdir(LONIDS)) {
801: next if ($filename eq '.' || $filename eq '..');
802: next if ($filename =~ /publicuser_\d+\.id/);
803: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
804: if ($curtime-$mtime < 1800) { $numusers++; }
805: }
806: closedir(LONIDS);
807: }
808: my $userloadpercent=0;
809: my $maxuserload=$perlvar{'lonUserLoadLim'};
810: if ($maxuserload) {
811: $userloadpercent=100*$numusers/$maxuserload;
812: }
813: $userloadpercent=sprintf("%.2f",$userloadpercent);
814: return $userloadpercent;
815: }
816:
817: # ------------------------------ Find server with least workload from spare.tab
818:
819: sub spareserver {
820: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
821: my $spare_server;
822: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
823: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
824: : $userloadpercent;
825: my ($uint_dom,$remotesessions);
826: if (($udom ne '') && (&domain($udom) ne '')) {
827: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
828: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
829: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
830: $remotesessions = $udomdefaults{'remotesessions'};
831: }
832: my $spareshash = &this_host_spares($udom);
833: if (ref($spareshash) eq 'HASH') {
834: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
835: foreach my $try_server (@{ $spareshash->{'primary'} }) {
836: if ($uint_dom) {
837: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
838: $try_server));
839: }
840: ($spare_server, $lowest_load) =
841: &compare_server_load($try_server, $spare_server, $lowest_load);
842: }
843: }
844:
845: my $found_server = ($spare_server ne '' && $lowest_load < 100);
846:
847: if (!$found_server) {
848: if (ref($spareshash->{'default'}) eq 'ARRAY') {
849: foreach my $try_server (@{ $spareshash->{'default'} }) {
850: if ($uint_dom) {
851: next unless (&spare_can_host($udom,$uint_dom,
852: $remotesessions,$try_server));
853: }
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858: }
859: }
860:
861: if (!$want_server_name) {
862: my $protocol = 'http';
863: if ($protocol{$spare_server} eq 'https') {
864: $protocol = $protocol{$spare_server};
865: }
866: if (defined($spare_server)) {
867: my $hostname = &hostname($spare_server);
868: if (defined($hostname)) {
869: $spare_server = $protocol.'://'.$hostname;
870: }
871: }
872: }
873: return $spare_server;
874: }
875:
876: sub compare_server_load {
877: my ($try_server, $spare_server, $lowest_load) = @_;
878:
879: my $loadans = &reply('load', $try_server);
880: my $userloadans = &reply('userload',$try_server);
881:
882: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
883: return ($spare_server, $lowest_load); #didn't get a number from the server
884: }
885:
886: my $load;
887: if ($loadans =~ /\d/) {
888: if ($userloadans =~ /\d/) {
889: #both are numbers, pick the bigger one
890: $load = ($loadans > $userloadans) ? $loadans
891: : $userloadans;
892: } else {
893: $load = $loadans;
894: }
895: } else {
896: $load = $userloadans;
897: }
898:
899: if (($load =~ /\d/) && ($load < $lowest_load)) {
900: $spare_server = $try_server;
901: $lowest_load = $load;
902: }
903: return ($spare_server,$lowest_load);
904: }
905:
906: # --------------------------- ask offload servers if user already has a session
907: sub find_existing_session {
908: my ($udom,$uname) = @_;
909: my $spareshash = &this_host_spares($udom);
910: if (ref($spareshash) eq 'HASH') {
911: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
912: foreach my $try_server (@{ $spareshash->{'primary'} }) {
913: return $try_server if (&has_user_session($try_server, $udom, $uname));
914: }
915: }
916: if (ref($spareshash->{'default'}) eq 'ARRAY') {
917: foreach my $try_server (@{ $spareshash->{'default'} }) {
918: return $try_server if (&has_user_session($try_server, $udom, $uname));
919: }
920: }
921: }
922: return;
923: }
924:
925: # -------------------------------- ask if server already has a session for user
926: sub has_user_session {
927: my ($lonid,$udom,$uname) = @_;
928: my $result = &reply(join(':','userhassession',
929: map {&escape($_)} ($udom,$uname)),$lonid);
930: return 1 if ($result eq 'ok');
931:
932: return 0;
933: }
934:
935: # --------- determine least loaded server in a user's domain which allows login
936:
937: sub choose_server {
938: my ($udom,$checkloginvia) = @_;
939: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
940: my %servers = &get_servers($udom);
941: my $lowest_load = 30000;
942: my ($login_host,$hostname,$portal_path,$isredirect);
943: foreach my $lonhost (keys(%servers)) {
944: my $loginvia;
945: if ($checkloginvia) {
946: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
947: if ($loginvia) {
948: my ($server,$path) = split(/:/,$loginvia);
949: ($login_host, $lowest_load) =
950: &compare_server_load($server, $login_host, $lowest_load);
951: if ($login_host eq $server) {
952: $portal_path = $path;
953: $isredirect = 1;
954: }
955: } else {
956: ($login_host, $lowest_load) =
957: &compare_server_load($lonhost, $login_host, $lowest_load);
958: if ($login_host eq $lonhost) {
959: $portal_path = '';
960: $isredirect = '';
961: }
962: }
963: } else {
964: ($login_host, $lowest_load) =
965: &compare_server_load($lonhost, $login_host, $lowest_load);
966: }
967: }
968: if ($login_host ne '') {
969: $hostname = &hostname($login_host);
970: }
971: return ($login_host,$hostname,$portal_path,$isredirect);
972: }
973:
974: # --------------------------------------------- Try to change a user's password
975:
976: sub changepass {
977: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
978: $currentpass = &escape($currentpass);
979: $newpass = &escape($newpass);
980: my $lonhost = $perlvar{'lonHostID'};
981: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
982: $server);
983: if (! $answer) {
984: &logthis("No reply on password change request to $server ".
985: "by $uname in domain $udom.");
986: } elsif ($answer =~ "^ok") {
987: &logthis("$uname in $udom successfully changed their password ".
988: "on $server.");
989: } elsif ($answer =~ "^pwchange_failure") {
990: &logthis("$uname in $udom was unable to change their password ".
991: "on $server. The action was blocked by either lcpasswd ".
992: "or pwchange");
993: } elsif ($answer =~ "^non_authorized") {
994: &logthis("$uname in $udom did not get their password correct when ".
995: "attempting to change it on $server.");
996: } elsif ($answer =~ "^auth_mode_error") {
997: &logthis("$uname in $udom attempted to change their password despite ".
998: "not being locally or internally authenticated on $server.");
999: } elsif ($answer =~ "^unknown_user") {
1000: &logthis("$uname in $udom attempted to change their password ".
1001: "on $server but were unable to because $server is not ".
1002: "their home server.");
1003: } elsif ($answer =~ "^refused") {
1004: &logthis("$server refused to change $uname in $udom password because ".
1005: "it was sent an unencrypted request to change the password.");
1006: } elsif ($answer =~ "invalid_client") {
1007: &logthis("$server refused to change $uname in $udom password because ".
1008: "it was a reset by e-mail originating from an invalid server.");
1009: }
1010: return $answer;
1011: }
1012:
1013: # ----------------------- Try to determine user's current authentication scheme
1014:
1015: sub queryauthenticate {
1016: my ($uname,$udom)=@_;
1017: my $uhome=&homeserver($uname,$udom);
1018: if (!$uhome) {
1019: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1020: return 'no_host';
1021: }
1022: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1023: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1024: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1025: }
1026: return $answer;
1027: }
1028:
1029: # --------- Try to authenticate user from domain's lib servers (first this one)
1030:
1031: sub authenticate {
1032: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1033: $upass=&escape($upass);
1034: $uname= &LONCAPA::clean_username($uname);
1035: my $uhome=&homeserver($uname,$udom,1);
1036: my $newhome;
1037: if ((!$uhome) || ($uhome eq 'no_host')) {
1038: # Maybe the machine was offline and only re-appeared again recently?
1039: &reconlonc();
1040: # One more
1041: $uhome=&homeserver($uname,$udom,1);
1042: if (($uhome eq 'no_host') && $checkdefauth) {
1043: if (defined(&domain($udom,'primary'))) {
1044: $newhome=&domain($udom,'primary');
1045: }
1046: if ($newhome ne '') {
1047: $uhome = $newhome;
1048: }
1049: }
1050: if ((!$uhome) || ($uhome eq 'no_host')) {
1051: &logthis("User $uname at $udom is unknown in authenticate");
1052: return 'no_host';
1053: }
1054: }
1055: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1056: if ($answer eq 'authorized') {
1057: if ($newhome) {
1058: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1059: return 'no_account_on_host';
1060: } else {
1061: &logthis("User $uname at $udom authorized by $uhome");
1062: return $uhome;
1063: }
1064: }
1065: if ($answer eq 'non_authorized') {
1066: &logthis("User $uname at $udom rejected by $uhome");
1067: return 'no_host';
1068: }
1069: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1070: return 'no_host';
1071: }
1072:
1073: sub can_host_session {
1074: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1075: my $canhost = 1;
1076: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1077: if (ref($remotesessions) eq 'HASH') {
1078: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1079: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1080: $canhost = 0;
1081: } else {
1082: $canhost = 1;
1083: }
1084: }
1085: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1086: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1087: $canhost = 1;
1088: } else {
1089: $canhost = 0;
1090: }
1091: }
1092: if ($canhost) {
1093: if ($remotesessions->{'version'} ne '') {
1094: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1095: if ($reqmajor ne '' && $reqminor ne '') {
1096: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1097: my $major = $1;
1098: my $minor = $2;
1099: if (($major < $reqmajor ) ||
1100: (($major == $reqmajor) && ($minor < $reqminor))) {
1101: $canhost = 0;
1102: }
1103: } else {
1104: $canhost = 0;
1105: }
1106: }
1107: }
1108: }
1109: }
1110: if ($canhost) {
1111: if (ref($hostedsessions) eq 'HASH') {
1112: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1113: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1114: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1115: if (($uint_dom ne '') &&
1116: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1117: $canhost = 0;
1118: } else {
1119: $canhost = 1;
1120: }
1121: }
1122: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1123: if (($uint_dom ne '') &&
1124: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1125: $canhost = 1;
1126: } else {
1127: $canhost = 0;
1128: }
1129: }
1130: }
1131: }
1132: return $canhost;
1133: }
1134:
1135: sub spare_can_host {
1136: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1137: my $canhost=1;
1138: my @intdoms;
1139: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1140: if (ref($internet_names) eq 'ARRAY') {
1141: @intdoms = @{$internet_names};
1142: }
1143: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1144: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1145: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1146: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1147: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1148: $canhost = &can_host_session($udom,$try_server,$remoterev,
1149: $remotesessions,
1150: $defdomdefaults{'hostedsessions'});
1151: }
1152: return $canhost;
1153: }
1154:
1155: sub this_host_spares {
1156: my ($dom) = @_;
1157: my ($dom_in_use,$lonhost_in_use,$result);
1158: my @hosts = ¤t_machine_ids();
1159: foreach my $lonhost (@hosts) {
1160: if (&host_domain($lonhost) eq $dom) {
1161: $dom_in_use = $dom;
1162: $lonhost_in_use = $lonhost;
1163: last;
1164: }
1165: }
1166: if ($dom_in_use ne '') {
1167: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1168: }
1169: if (ref($result) ne 'HASH') {
1170: $lonhost_in_use = $perlvar{'lonHostID'};
1171: $dom_in_use = &host_domain($lonhost_in_use);
1172: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1173: if (ref($result) ne 'HASH') {
1174: $result = \%spareid;
1175: }
1176: }
1177: return $result;
1178: }
1179:
1180: sub spares_for_offload {
1181: my ($dom_in_use,$lonhost_in_use) = @_;
1182: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1183: if (defined($cached)) {
1184: return $result;
1185: } else {
1186: my $cachetime = 60*60*24;
1187: my %domconfig =
1188: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1189: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1190: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1191: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1192: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1193: }
1194: }
1195: }
1196: }
1197: return;
1198: }
1199:
1200: sub get_lonbalancer_config {
1201: my ($servers) = @_;
1202: my ($currbalancer,$currtargets);
1203: if (ref($servers) eq 'HASH') {
1204: foreach my $server (keys(%{$servers})) {
1205: my %what = (
1206: spareid => 1,
1207: perlvar => 1,
1208: );
1209: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1210: if ($result eq 'ok') {
1211: if (ref($returnhash) eq 'HASH') {
1212: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1213: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1214: $currbalancer = $server;
1215: $currtargets = {};
1216: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1217: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1218: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1219: }
1220: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1221: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1222: }
1223: }
1224: last;
1225: }
1226: }
1227: }
1228: }
1229: }
1230: }
1231: return ($currbalancer,$currtargets);
1232: }
1233:
1234: sub check_loadbalancing {
1235: my ($uname,$udom) = @_;
1236: my ($is_balancer,$dom_in_use,$homeintdom,$rule_in_effect,
1237: $offloadto,$otherserver);
1238: my $lonhost = $perlvar{'lonHostID'};
1239: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1240: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1241: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1242: my $serverhomedom = &host_domain($lonhost);
1243:
1244: my $cachetime = 60*60*24;
1245:
1246: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1247: $dom_in_use = $udom;
1248: $homeintdom = 1;
1249: } else {
1250: $dom_in_use = $serverhomedom;
1251: }
1252: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1253: unless (defined($cached)) {
1254: my %domconfig =
1255: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1256: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1257: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1258: }
1259: }
1260: if (ref($result) eq 'HASH') {
1261: my $currbalancer = $result->{'lonhost'};
1262: my $currtargets = $result->{'targets'};
1263: my $currrules = $result->{'rules'};
1264: if ($currbalancer ne '') {
1265: my @hosts = ¤t_machine_ids();
1266: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1267: $is_balancer = 1;
1268: }
1269: }
1270: if ($is_balancer) {
1271: if (ref($currrules) eq 'HASH') {
1272: if ($homeintdom) {
1273: if ($uname ne '') {
1274: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1275: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1276: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1277: $rule_in_effect = $currrules->{'_LC_author'};
1278: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1279: $rule_in_effect = $currrules->{'_LC_adv'}
1280: }
1281: }
1282: if ($rule_in_effect eq '') {
1283: my %userenv = &userenvironment($udom,$uname,'inststatus');
1284: if ($userenv{'inststatus'} ne '') {
1285: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1286: my ($othertitle,$usertypes,$types) =
1287: &Apache::loncommon::sorted_inst_types($udom);
1288: if (ref($types) eq 'ARRAY') {
1289: foreach my $type (@{$types}) {
1290: if (grep(/^\Q$type\E$/,@statuses)) {
1291: if (exists($currrules->{$type})) {
1292: $rule_in_effect = $currrules->{$type};
1293: }
1294: }
1295: }
1296: }
1297: } else {
1298: if (exists($currrules->{'default'})) {
1299: $rule_in_effect = $currrules->{'default'};
1300: }
1301: }
1302: }
1303: } else {
1304: if (exists($currrules->{'default'})) {
1305: $rule_in_effect = $currrules->{'default'};
1306: }
1307: }
1308: } else {
1309: if ($currrules->{'_LC_external'} ne '') {
1310: $rule_in_effect = $currrules->{'_LC_external'};
1311: }
1312: }
1313: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1314: $uname,$udom);
1315: }
1316: }
1317: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1318: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1319: unless (defined($cached)) {
1320: my %domconfig =
1321: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1322: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1323: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1324: }
1325: }
1326: if (ref($result) eq 'HASH') {
1327: my $currbalancer = $result->{'lonhost'};
1328: my $currtargets = $result->{'targets'};
1329: my $currrules = $result->{'rules'};
1330:
1331: if ($currbalancer eq $lonhost) {
1332: $is_balancer = 1;
1333: if (ref($currrules) eq 'HASH') {
1334: if ($currrules->{'_LC_internetdom'} ne '') {
1335: $rule_in_effect = $currrules->{'_LC_internetdom'};
1336: }
1337: }
1338: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1339: $uname,$udom);
1340: }
1341: } else {
1342: if ($perlvar{'lonBalancer'} eq 'yes') {
1343: $is_balancer = 1;
1344: $offloadto = &this_host_spares($dom_in_use);
1345: }
1346: }
1347: } else {
1348: if ($perlvar{'lonBalancer'} eq 'yes') {
1349: $is_balancer = 1;
1350: $offloadto = &this_host_spares($dom_in_use);
1351: }
1352: }
1353: my $lowest_load = 30000;
1354: if (ref($offloadto) eq 'HASH') {
1355: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1356: foreach my $try_server (@{$offloadto->{'primary'}}) {
1357: ($otherserver,$lowest_load) =
1358: &compare_server_load($try_server,$otherserver,$lowest_load);
1359: }
1360: }
1361: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1362:
1363: if (!$found_server) {
1364: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1365: foreach my $try_server (@{$offloadto->{'default'}}) {
1366: ($otherserver,$lowest_load) =
1367: &compare_server_load($try_server,$otherserver,$lowest_load);
1368: }
1369: }
1370: }
1371: } elsif (ref($offloadto) eq 'ARRAY') {
1372: if (@{$offloadto} == 1) {
1373: $otherserver = $offloadto->[0];
1374: } elsif (@{$offloadto} > 1) {
1375: foreach my $try_server (@{$offloadto}) {
1376: ($otherserver,$lowest_load) =
1377: &compare_server_load($try_server,$otherserver,$lowest_load);
1378: }
1379: }
1380: }
1381: return ($is_balancer,$otherserver);
1382: }
1383:
1384: sub get_loadbalancer_targets {
1385: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1386: my $offloadto;
1387: if ($rule_in_effect eq '') {
1388: $offloadto = $currtargets;
1389: } else {
1390: if ($rule_in_effect eq 'homeserver') {
1391: my $homeserver = &homeserver($uname,$udom);
1392: if ($homeserver ne 'no_host') {
1393: $offloadto = [$homeserver];
1394: }
1395: } elsif ($rule_in_effect eq 'externalbalancer') {
1396: my %domconfig =
1397: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1398: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1399: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1400: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1401: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1402: }
1403: }
1404: } else {
1405: my %servers = &dom_servers($udom);
1406: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1407: if (&hostname($remotebalancer) ne '') {
1408: $offloadto = [$remotebalancer];
1409: }
1410: }
1411: } elsif (&hostname($rule_in_effect) ne '') {
1412: $offloadto = [$rule_in_effect];
1413: }
1414: }
1415: return $offloadto;
1416: }
1417:
1418: sub internet_dom_servers {
1419: my ($dom) = @_;
1420: my (%uniqservers,%servers);
1421: my $primaryserver = &hostname(&domain($dom,'primary'));
1422: my @machinedoms = &machine_domains($primaryserver);
1423: foreach my $mdom (@machinedoms) {
1424: my %currservers = %servers;
1425: my %server = &get_servers($mdom);
1426: %servers = (%currservers,%server);
1427: }
1428: my %by_hostname;
1429: foreach my $id (keys(%servers)) {
1430: push(@{$by_hostname{$servers{$id}}},$id);
1431: }
1432: foreach my $hostname (sort(keys(%by_hostname))) {
1433: if (@{$by_hostname{$hostname}} > 1) {
1434: my $match = 0;
1435: foreach my $id (@{$by_hostname{$hostname}}) {
1436: if (&host_domain($id) eq $dom) {
1437: $uniqservers{$id} = $hostname;
1438: $match = 1;
1439: }
1440: }
1441: unless ($match) {
1442: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1443: }
1444: } else {
1445: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1446: }
1447: }
1448: return %uniqservers;
1449: }
1450:
1451: # ---------------------- Find the homebase for a user from domain's lib servers
1452:
1453: my %homecache;
1454: sub homeserver {
1455: my ($uname,$udom,$ignoreBadCache)=@_;
1456: my $index="$uname:$udom";
1457:
1458: if (exists($homecache{$index})) { return $homecache{$index}; }
1459:
1460: my %servers = &get_servers($udom,'library');
1461: foreach my $tryserver (keys(%servers)) {
1462: next if ($ignoreBadCache ne 'true' &&
1463: exists($badServerCache{$tryserver}));
1464:
1465: my $answer=reply("home:$udom:$uname",$tryserver);
1466: if ($answer eq 'found') {
1467: delete($badServerCache{$tryserver});
1468: return $homecache{$index}=$tryserver;
1469: } elsif ($answer eq 'no_host') {
1470: $badServerCache{$tryserver}=1;
1471: }
1472: }
1473: return 'no_host';
1474: }
1475:
1476: # ------------------------------------- Find the usernames behind a list of IDs
1477:
1478: sub idget {
1479: my ($udom,@ids)=@_;
1480: my %returnhash=();
1481:
1482: my %servers = &get_servers($udom,'library');
1483: foreach my $tryserver (keys(%servers)) {
1484: my $idlist=join('&',@ids);
1485: $idlist=~tr/A-Z/a-z/;
1486: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1487: my @answer=();
1488: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1489: @answer=split(/\&/,$reply);
1490: } ;
1491: my $i;
1492: for ($i=0;$i<=$#ids;$i++) {
1493: if ($answer[$i]) {
1494: $returnhash{$ids[$i]}=$answer[$i];
1495: }
1496: }
1497: }
1498: return %returnhash;
1499: }
1500:
1501: # ------------------------------------- Find the IDs behind a list of usernames
1502:
1503: sub idrget {
1504: my ($udom,@unames)=@_;
1505: my %returnhash=();
1506: foreach my $uname (@unames) {
1507: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1508: }
1509: return %returnhash;
1510: }
1511:
1512: # ------------------------------- Store away a list of names and associated IDs
1513:
1514: sub idput {
1515: my ($udom,%ids)=@_;
1516: my %servers=();
1517: foreach my $uname (keys(%ids)) {
1518: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1519: my $uhom=&homeserver($uname,$udom);
1520: if ($uhom ne 'no_host') {
1521: my $id=&escape($ids{$uname});
1522: $id=~tr/A-Z/a-z/;
1523: my $esc_unam=&escape($uname);
1524: if ($servers{$uhom}) {
1525: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1526: } else {
1527: $servers{$uhom}=$id.'='.$esc_unam;
1528: }
1529: }
1530: }
1531: foreach my $server (keys(%servers)) {
1532: &critical('idput:'.$udom.':'.$servers{$server},$server);
1533: }
1534: }
1535:
1536: # ------------------------------dump from db file owned by domainconfig user
1537: sub dump_dom {
1538: my ($namespace, $udom, $regexp) = @_;
1539:
1540: $udom ||= $env{'user.domain'};
1541:
1542: return () unless $udom;
1543:
1544: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1545: }
1546:
1547: # ------------------------------------------ get items from domain db files
1548:
1549: sub get_dom {
1550: my ($namespace,$storearr,$udom,$uhome)=@_;
1551: my $items='';
1552: foreach my $item (@$storearr) {
1553: $items.=&escape($item).'&';
1554: }
1555: $items=~s/\&$//;
1556: if (!$udom) {
1557: $udom=$env{'user.domain'};
1558: if (defined(&domain($udom,'primary'))) {
1559: $uhome=&domain($udom,'primary');
1560: } else {
1561: undef($uhome);
1562: }
1563: } else {
1564: if (!$uhome) {
1565: if (defined(&domain($udom,'primary'))) {
1566: $uhome=&domain($udom,'primary');
1567: }
1568: }
1569: }
1570: if ($udom && $uhome && ($uhome ne 'no_host')) {
1571: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1572: my %returnhash;
1573: if ($rep eq '' || $rep =~ /^error: 2 /) {
1574: return %returnhash;
1575: }
1576: my @pairs=split(/\&/,$rep);
1577: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1578: return @pairs;
1579: }
1580: my $i=0;
1581: foreach my $item (@$storearr) {
1582: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1583: $i++;
1584: }
1585: return %returnhash;
1586: } else {
1587: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1588: }
1589: }
1590:
1591: # -------------------------------------------- put items in domain db files
1592:
1593: sub put_dom {
1594: my ($namespace,$storehash,$udom,$uhome)=@_;
1595: if (!$udom) {
1596: $udom=$env{'user.domain'};
1597: if (defined(&domain($udom,'primary'))) {
1598: $uhome=&domain($udom,'primary');
1599: } else {
1600: undef($uhome);
1601: }
1602: } else {
1603: if (!$uhome) {
1604: if (defined(&domain($udom,'primary'))) {
1605: $uhome=&domain($udom,'primary');
1606: }
1607: }
1608: }
1609: if ($udom && $uhome && ($uhome ne 'no_host')) {
1610: my $items='';
1611: foreach my $item (keys(%$storehash)) {
1612: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1613: }
1614: $items=~s/\&$//;
1615: return &reply("putdom:$udom:$namespace:$items",$uhome);
1616: } else {
1617: &logthis("put_dom failed - no homeserver and/or domain");
1618: }
1619: }
1620:
1621: # --------------------- newput for items in db file owned by domainconfig user
1622: sub newput_dom {
1623: my ($namespace,$storehash,$udom) = @_;
1624: my $result;
1625: if (!$udom) {
1626: $udom=$env{'user.domain'};
1627: }
1628: if ($udom) {
1629: my $uname = &get_domainconfiguser($udom);
1630: $result = &newput($namespace,$storehash,$udom,$uname);
1631: }
1632: return $result;
1633: }
1634:
1635: # --------------------- delete for items in db file owned by domainconfig user
1636: sub del_dom {
1637: my ($namespace,$storearr,$udom)=@_;
1638: if (ref($storearr) eq 'ARRAY') {
1639: if (!$udom) {
1640: $udom=$env{'user.domain'};
1641: }
1642: if ($udom) {
1643: my $uname = &get_domainconfiguser($udom);
1644: return &del($namespace,$storearr,$udom,$uname);
1645: }
1646: }
1647: }
1648:
1649: # ----------------------------------construct domainconfig user for a domain
1650: sub get_domainconfiguser {
1651: my ($udom) = @_;
1652: return $udom.'-domainconfig';
1653: }
1654:
1655: sub retrieve_inst_usertypes {
1656: my ($udom) = @_;
1657: my (%returnhash,@order);
1658: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1659: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1660: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1661: %returnhash = %{$domdefs{'inststatustypes'}};
1662: @order = @{$domdefs{'inststatusorder'}};
1663: } else {
1664: if (defined(&domain($udom,'primary'))) {
1665: my $uhome=&domain($udom,'primary');
1666: my $rep=&reply("inst_usertypes:$udom",$uhome);
1667: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1668: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1669: return (\%returnhash,\@order);
1670: }
1671: my ($hashitems,$orderitems) = split(/:/,$rep);
1672: my @pairs=split(/\&/,$hashitems);
1673: foreach my $item (@pairs) {
1674: my ($key,$value)=split(/=/,$item,2);
1675: $key = &unescape($key);
1676: next if ($key =~ /^error: 2 /);
1677: $returnhash{$key}=&thaw_unescape($value);
1678: }
1679: my @esc_order = split(/\&/,$orderitems);
1680: foreach my $item (@esc_order) {
1681: push(@order,&unescape($item));
1682: }
1683: } else {
1684: &logthis("get_dom failed - no primary domain server for $udom");
1685: }
1686: }
1687: return (\%returnhash,\@order);
1688: }
1689:
1690: sub is_domainimage {
1691: my ($url) = @_;
1692: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1693: if (&domain($1) ne '') {
1694: return '1';
1695: }
1696: }
1697: return;
1698: }
1699:
1700: sub inst_directory_query {
1701: my ($srch) = @_;
1702: my $udom = $srch->{'srchdomain'};
1703: my %results;
1704: my $homeserver = &domain($udom,'primary');
1705: my $outcome;
1706: if ($homeserver ne '') {
1707: my $queryid=&reply("querysend:instdirsearch:".
1708: &escape($srch->{'srchby'}).':'.
1709: &escape($srch->{'srchterm'}).':'.
1710: &escape($srch->{'srchtype'}),$homeserver);
1711: my $host=&hostname($homeserver);
1712: if ($queryid !~/^\Q$host\E\_/) {
1713: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1714: return;
1715: }
1716: my $response = &get_query_reply($queryid);
1717: my $maxtries = 5;
1718: my $tries = 1;
1719: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1720: $response = &get_query_reply($queryid);
1721: $tries ++;
1722: }
1723:
1724: if (!&error($response) && $response ne 'refused') {
1725: if ($response eq 'unavailable') {
1726: $outcome = $response;
1727: } else {
1728: $outcome = 'ok';
1729: my @matches = split(/\n/,$response);
1730: foreach my $match (@matches) {
1731: my ($key,$value) = split(/=/,$match);
1732: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1733: }
1734: }
1735: }
1736: }
1737: return ($outcome,%results);
1738: }
1739:
1740: sub usersearch {
1741: my ($srch) = @_;
1742: my $dom = $srch->{'srchdomain'};
1743: my %results;
1744: my %libserv = &all_library();
1745: my $query = 'usersearch';
1746: foreach my $tryserver (keys(%libserv)) {
1747: if (&host_domain($tryserver) eq $dom) {
1748: my $host=&hostname($tryserver);
1749: my $queryid=
1750: &reply("querysend:".&escape($query).':'.
1751: &escape($srch->{'srchby'}).':'.
1752: &escape($srch->{'srchtype'}).':'.
1753: &escape($srch->{'srchterm'}),$tryserver);
1754: if ($queryid !~/^\Q$host\E\_/) {
1755: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1756: next;
1757: }
1758: my $reply = &get_query_reply($queryid);
1759: my $maxtries = 1;
1760: my $tries = 1;
1761: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1762: $reply = &get_query_reply($queryid);
1763: $tries ++;
1764: }
1765: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1766: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1767: } else {
1768: my @matches;
1769: if ($reply =~ /\n/) {
1770: @matches = split(/\n/,$reply);
1771: } else {
1772: @matches = split(/\&/,$reply);
1773: }
1774: foreach my $match (@matches) {
1775: my ($uname,$udom,%userhash);
1776: foreach my $entry (split(/:/,$match)) {
1777: my ($key,$value) =
1778: map {&unescape($_);} split(/=/,$entry);
1779: $userhash{$key} = $value;
1780: if ($key eq 'username') {
1781: $uname = $value;
1782: } elsif ($key eq 'domain') {
1783: $udom = $value;
1784: }
1785: }
1786: $results{$uname.':'.$udom} = \%userhash;
1787: }
1788: }
1789: }
1790: }
1791: return %results;
1792: }
1793:
1794: sub get_instuser {
1795: my ($udom,$uname,$id) = @_;
1796: my $homeserver = &domain($udom,'primary');
1797: my ($outcome,%results);
1798: if ($homeserver ne '') {
1799: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1800: &escape($id).':'.&escape($udom),$homeserver);
1801: my $host=&hostname($homeserver);
1802: if ($queryid !~/^\Q$host\E\_/) {
1803: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1804: return;
1805: }
1806: my $response = &get_query_reply($queryid);
1807: my $maxtries = 5;
1808: my $tries = 1;
1809: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1810: $response = &get_query_reply($queryid);
1811: $tries ++;
1812: }
1813: if (!&error($response) && $response ne 'refused') {
1814: if ($response eq 'unavailable') {
1815: $outcome = $response;
1816: } else {
1817: $outcome = 'ok';
1818: my @matches = split(/\n/,$response);
1819: foreach my $match (@matches) {
1820: my ($key,$value) = split(/=/,$match);
1821: $results{&unescape($key)} = &thaw_unescape($value);
1822: }
1823: }
1824: }
1825: }
1826: my %userinfo;
1827: if (ref($results{$uname}) eq 'HASH') {
1828: %userinfo = %{$results{$uname}};
1829: }
1830: return ($outcome,%userinfo);
1831: }
1832:
1833: sub inst_rulecheck {
1834: my ($udom,$uname,$id,$item,$rules) = @_;
1835: my %returnhash;
1836: if ($udom ne '') {
1837: if (ref($rules) eq 'ARRAY') {
1838: @{$rules} = map {&escape($_);} (@{$rules});
1839: my $rulestr = join(':',@{$rules});
1840: my $homeserver=&domain($udom,'primary');
1841: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1842: my $response;
1843: if ($item eq 'username') {
1844: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1845: ':'.&escape($uname).':'.$rulestr,
1846: $homeserver));
1847: } elsif ($item eq 'id') {
1848: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1849: ':'.&escape($id).':'.$rulestr,
1850: $homeserver));
1851: } elsif ($item eq 'selfcreate') {
1852: $response=&unescape(&reply('instselfcreatecheck:'.
1853: &escape($udom).':'.&escape($uname).
1854: ':'.$rulestr,$homeserver));
1855: }
1856: if ($response ne 'refused') {
1857: my @pairs=split(/\&/,$response);
1858: foreach my $item (@pairs) {
1859: my ($key,$value)=split(/=/,$item,2);
1860: $key = &unescape($key);
1861: next if ($key =~ /^error: 2 /);
1862: $returnhash{$key}=&thaw_unescape($value);
1863: }
1864: }
1865: }
1866: }
1867: }
1868: return %returnhash;
1869: }
1870:
1871: sub inst_userrules {
1872: my ($udom,$check) = @_;
1873: my (%ruleshash,@ruleorder);
1874: if ($udom ne '') {
1875: my $homeserver=&domain($udom,'primary');
1876: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1877: my $response;
1878: if ($check eq 'id') {
1879: $response=&reply('instidrules:'.&escape($udom),
1880: $homeserver);
1881: } elsif ($check eq 'email') {
1882: $response=&reply('instemailrules:'.&escape($udom),
1883: $homeserver);
1884: } else {
1885: $response=&reply('instuserrules:'.&escape($udom),
1886: $homeserver);
1887: }
1888: if (($response ne 'refused') && ($response ne 'error') &&
1889: ($response ne 'unknown_cmd') &&
1890: ($response ne 'no_such_host')) {
1891: my ($hashitems,$orderitems) = split(/:/,$response);
1892: my @pairs=split(/\&/,$hashitems);
1893: foreach my $item (@pairs) {
1894: my ($key,$value)=split(/=/,$item,2);
1895: $key = &unescape($key);
1896: next if ($key =~ /^error: 2 /);
1897: $ruleshash{$key}=&thaw_unescape($value);
1898: }
1899: my @esc_order = split(/\&/,$orderitems);
1900: foreach my $item (@esc_order) {
1901: push(@ruleorder,&unescape($item));
1902: }
1903: }
1904: }
1905: }
1906: return (\%ruleshash,\@ruleorder);
1907: }
1908:
1909: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1910:
1911: sub get_domain_defaults {
1912: my ($domain) = @_;
1913: my $cachetime = 60*60*24;
1914: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1915: if (defined($cached)) {
1916: if (ref($result) eq 'HASH') {
1917: return %{$result};
1918: }
1919: }
1920: my %domdefaults;
1921: my %domconfig =
1922: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1923: 'requestcourses','inststatus',
1924: 'coursedefaults','usersessions'],$domain);
1925: if (ref($domconfig{'defaults'}) eq 'HASH') {
1926: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1927: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1928: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1929: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1930: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1931: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1932: } else {
1933: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1934: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1935: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1936: }
1937: if (ref($domconfig{'quotas'}) eq 'HASH') {
1938: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1939: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1940: } else {
1941: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1942: }
1943: my @usertools = ('aboutme','blog','portfolio');
1944: foreach my $item (@usertools) {
1945: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1946: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1947: }
1948: }
1949: }
1950: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1951: foreach my $item ('official','unofficial','community') {
1952: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1953: }
1954: }
1955: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1956: foreach my $item ('inststatustypes','inststatusorder') {
1957: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1958: }
1959: }
1960: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1961: foreach my $item ('canuse_pdfforms') {
1962: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1963: }
1964: }
1965: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1966: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1967: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1968: }
1969: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1970: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1971: }
1972: }
1973: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1974: $cachetime);
1975: return %domdefaults;
1976: }
1977:
1978: # --------------------------------------------------- Assign a key to a student
1979:
1980: sub assign_access_key {
1981: #
1982: # a valid key looks like uname:udom#comments
1983: # comments are being appended
1984: #
1985: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1986: $kdom=
1987: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1988: $knum=
1989: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1990: $cdom=
1991: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1992: $cnum=
1993: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1994: $udom=$env{'user.name'} unless (defined($udom));
1995: $uname=$env{'user.domain'} unless (defined($uname));
1996: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1997: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1998: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1999: # assigned to this person
2000: # - this should not happen,
2001: # unless something went wrong
2002: # the first time around
2003: # ready to assign
2004: $logentry=$1.'; '.$logentry;
2005: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2006: $kdom,$knum) eq 'ok') {
2007: # key now belongs to user
2008: my $envkey='key.'.$cdom.'_'.$cnum;
2009: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2010: &appenv({'environment.'.$envkey => $ckey});
2011: return 'ok';
2012: } else {
2013: return
2014: 'error: Count not permanently assign key, will need to be re-entered later.';
2015: }
2016: } else {
2017: return 'error: Could not assign key, try again later.';
2018: }
2019: } elsif (!$existing{$ckey}) {
2020: # the key does not exist
2021: return 'error: The key does not exist';
2022: } else {
2023: # the key is somebody else's
2024: return 'error: The key is already in use';
2025: }
2026: }
2027:
2028: # ------------------------------------------ put an additional comment on a key
2029:
2030: sub comment_access_key {
2031: #
2032: # a valid key looks like uname:udom#comments
2033: # comments are being appended
2034: #
2035: my ($ckey,$cdom,$cnum,$logentry)=@_;
2036: $cdom=
2037: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2038: $cnum=
2039: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2040: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2041: if ($existing{$ckey}) {
2042: $existing{$ckey}.='; '.$logentry;
2043: # ready to assign
2044: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2045: $cdom,$cnum) eq 'ok') {
2046: return 'ok';
2047: } else {
2048: return 'error: Count not store comment.';
2049: }
2050: } else {
2051: # the key does not exist
2052: return 'error: The key does not exist';
2053: }
2054: }
2055:
2056: # ------------------------------------------------------ Generate a set of keys
2057:
2058: sub generate_access_keys {
2059: my ($number,$cdom,$cnum,$logentry)=@_;
2060: $cdom=
2061: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2062: $cnum=
2063: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2064: unless (&allowed('mky',$cdom)) { return 0; }
2065: unless (($cdom) && ($cnum)) { return 0; }
2066: if ($number>10000) { return 0; }
2067: sleep(2); # make sure don't get same seed twice
2068: srand(time()^($$+($$<<15))); # from "Programming Perl"
2069: my $total=0;
2070: for (my $i=1;$i<=$number;$i++) {
2071: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2072: sprintf("%lx",int(100000*rand)).'-'.
2073: sprintf("%lx",int(100000*rand));
2074: $newkey=~s/1/g/g; # folks mix up 1 and l
2075: $newkey=~s/0/h/g; # and also 0 and O
2076: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2077: if ($existing{$newkey}) {
2078: $i--;
2079: } else {
2080: if (&put('accesskeys',
2081: { $newkey => '# generated '.localtime().
2082: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2083: '; '.$logentry },
2084: $cdom,$cnum) eq 'ok') {
2085: $total++;
2086: }
2087: }
2088: }
2089: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2090: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2091: return $total;
2092: }
2093:
2094: # ------------------------------------------------------- Validate an accesskey
2095:
2096: sub validate_access_key {
2097: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2098: $cdom=
2099: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2100: $cnum=
2101: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2102: $udom=$env{'user.domain'} unless (defined($udom));
2103: $uname=$env{'user.name'} unless (defined($uname));
2104: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2105: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2106: }
2107:
2108: # ------------------------------------- Find the section of student in a course
2109: sub devalidate_getsection_cache {
2110: my ($udom,$unam,$courseid)=@_;
2111: my $hashid="$udom:$unam:$courseid";
2112: &devalidate_cache_new('getsection',$hashid);
2113: }
2114:
2115: sub courseid_to_courseurl {
2116: my ($courseid) = @_;
2117: #already url style courseid
2118: return $courseid if ($courseid =~ m{^/});
2119:
2120: if (exists($env{'course.'.$courseid.'.num'})) {
2121: my $cnum = $env{'course.'.$courseid.'.num'};
2122: my $cdom = $env{'course.'.$courseid.'.domain'};
2123: return "/$cdom/$cnum";
2124: }
2125:
2126: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2127: if (exists($courseinfo{'num'})) {
2128: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2129: }
2130:
2131: return undef;
2132: }
2133:
2134: sub getsection {
2135: my ($udom,$unam,$courseid)=@_;
2136: my $cachetime=1800;
2137:
2138: my $hashid="$udom:$unam:$courseid";
2139: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2140: if (defined($cached)) { return $result; }
2141:
2142: my %Pending;
2143: my %Expired;
2144: #
2145: # Each role can either have not started yet (pending), be active,
2146: # or have expired.
2147: #
2148: # If there is an active role, we are done.
2149: #
2150: # If there is more than one role which has not started yet,
2151: # choose the one which will start sooner
2152: # If there is one role which has not started yet, return it.
2153: #
2154: # If there is more than one expired role, choose the one which ended last.
2155: # If there is a role which has expired, return it.
2156: #
2157: $courseid = &courseid_to_courseurl($courseid);
2158: my $extra = &freeze_escape({'skipcheck' => 1});
2159: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
2160: foreach my $key (keys(%roleshash)) {
2161: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2162: my $section=$1;
2163: if ($key eq $courseid.'_st') { $section=''; }
2164: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2165: my $now=time;
2166: if (defined($end) && $end && ($now > $end)) {
2167: $Expired{$end}=$section;
2168: next;
2169: }
2170: if (defined($start) && $start && ($now < $start)) {
2171: $Pending{$start}=$section;
2172: next;
2173: }
2174: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2175: }
2176: #
2177: # Presumedly there will be few matching roles from the above
2178: # loop and the sorting time will be negligible.
2179: if (scalar(keys(%Pending))) {
2180: my ($time) = sort {$a <=> $b} keys(%Pending);
2181: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2182: }
2183: if (scalar(keys(%Expired))) {
2184: my @sorted = sort {$a <=> $b} keys(%Expired);
2185: my $time = pop(@sorted);
2186: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2187: }
2188: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2189: }
2190:
2191: sub save_cache {
2192: &purge_remembered();
2193: #&Apache::loncommon::validate_page();
2194: undef(%env);
2195: undef($env_loaded);
2196: }
2197:
2198: my $to_remember=-1;
2199: my %remembered;
2200: my %accessed;
2201: my $kicks=0;
2202: my $hits=0;
2203: sub make_key {
2204: my ($name,$id) = @_;
2205: if (length($id) > 65
2206: && length(&escape($id)) > 200) {
2207: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2208: }
2209: return &escape($name.':'.$id);
2210: }
2211:
2212: sub devalidate_cache_new {
2213: my ($name,$id,$debug) = @_;
2214: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2215: $id=&make_key($name,$id);
2216: $memcache->delete($id);
2217: delete($remembered{$id});
2218: delete($accessed{$id});
2219: }
2220:
2221: sub is_cached_new {
2222: my ($name,$id,$debug) = @_;
2223: $id=&make_key($name,$id);
2224: if (exists($remembered{$id})) {
2225: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2226: $accessed{$id}=[&gettimeofday()];
2227: $hits++;
2228: return ($remembered{$id},1);
2229: }
2230: my $value = $memcache->get($id);
2231: if (!(defined($value))) {
2232: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2233: return (undef,undef);
2234: }
2235: if ($value eq '__undef__') {
2236: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2237: $value=undef;
2238: }
2239: &make_room($id,$value,$debug);
2240: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2241: return ($value,1);
2242: }
2243:
2244: sub do_cache_new {
2245: my ($name,$id,$value,$time,$debug) = @_;
2246: $id=&make_key($name,$id);
2247: my $setvalue=$value;
2248: if (!defined($setvalue)) {
2249: $setvalue='__undef__';
2250: }
2251: if (!defined($time) ) {
2252: $time=600;
2253: }
2254: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2255: my $result = $memcache->set($id,$setvalue,$time);
2256: if (! $result) {
2257: &logthis("caching of id -> $id failed");
2258: $memcache->disconnect_all();
2259: }
2260: # need to make a copy of $value
2261: &make_room($id,$value,$debug);
2262: return $value;
2263: }
2264:
2265: sub make_room {
2266: my ($id,$value,$debug)=@_;
2267:
2268: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2269: : $value;
2270: if ($to_remember<0) { return; }
2271: $accessed{$id}=[&gettimeofday()];
2272: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2273: my $to_kick;
2274: my $max_time=0;
2275: foreach my $other (keys(%accessed)) {
2276: if (&tv_interval($accessed{$other}) > $max_time) {
2277: $to_kick=$other;
2278: $max_time=&tv_interval($accessed{$other});
2279: }
2280: }
2281: delete($remembered{$to_kick});
2282: delete($accessed{$to_kick});
2283: $kicks++;
2284: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2285: return;
2286: }
2287:
2288: sub purge_remembered {
2289: #&logthis("Tossing ".scalar(keys(%remembered)));
2290: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2291: undef(%remembered);
2292: undef(%accessed);
2293: }
2294: # ------------------------------------- Read an entry from a user's environment
2295:
2296: sub userenvironment {
2297: my ($udom,$unam,@what)=@_;
2298: my $items;
2299: foreach my $item (@what) {
2300: $items.=&escape($item).'&';
2301: }
2302: $items=~s/\&$//;
2303: my %returnhash=();
2304: my $uhome = &homeserver($unam,$udom);
2305: unless ($uhome eq 'no_host') {
2306: my @answer=split(/\&/,
2307: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2308: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2309: return %returnhash;
2310: }
2311: my $i;
2312: for ($i=0;$i<=$#what;$i++) {
2313: $returnhash{$what[$i]}=&unescape($answer[$i]);
2314: }
2315: }
2316: return %returnhash;
2317: }
2318:
2319: # ---------------------------------------------------------- Get a studentphoto
2320: sub studentphoto {
2321: my ($udom,$unam,$ext) = @_;
2322: my $home=&Apache::lonnet::homeserver($unam,$udom);
2323: if (defined($env{'request.course.id'})) {
2324: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2325: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2326: return(&retrievestudentphoto($udom,$unam,$ext));
2327: } else {
2328: my ($result,$perm_reqd)=
2329: &Apache::lonnet::auto_photo_permission($unam,$udom);
2330: if ($result eq 'ok') {
2331: if (!($perm_reqd eq 'yes')) {
2332: return(&retrievestudentphoto($udom,$unam,$ext));
2333: }
2334: }
2335: }
2336: }
2337: } else {
2338: my ($result,$perm_reqd) =
2339: &Apache::lonnet::auto_photo_permission($unam,$udom);
2340: if ($result eq 'ok') {
2341: if (!($perm_reqd eq 'yes')) {
2342: return(&retrievestudentphoto($udom,$unam,$ext));
2343: }
2344: }
2345: }
2346: return '/adm/lonKaputt/lonlogo_broken.gif';
2347: }
2348:
2349: sub retrievestudentphoto {
2350: my ($udom,$unam,$ext,$type) = @_;
2351: my $home=&Apache::lonnet::homeserver($unam,$udom);
2352: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2353: if ($ret eq 'ok') {
2354: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2355: if ($type eq 'thumbnail') {
2356: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2357: }
2358: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2359: return $tokenurl;
2360: } else {
2361: if ($type eq 'thumbnail') {
2362: return '/adm/lonKaputt/genericstudent_tn.gif';
2363: } else {
2364: return '/adm/lonKaputt/lonlogo_broken.gif';
2365: }
2366: }
2367: }
2368:
2369: # -------------------------------------------------------------------- New chat
2370:
2371: sub chatsend {
2372: my ($newentry,$anon,$group)=@_;
2373: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2374: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2375: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2376: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2377: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2378: &escape($newentry)).':'.$group,$chome);
2379: }
2380:
2381: # ------------------------------------------ Find current version of a resource
2382:
2383: sub getversion {
2384: my $fname=&clutter(shift);
2385: unless ($fname=~/^\/res\//) { return -1; }
2386: return ¤tversion(&filelocation('',$fname));
2387: }
2388:
2389: sub currentversion {
2390: my $fname=shift;
2391: my $author=$fname;
2392: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2393: my ($udom,$uname)=split(/\//,$author);
2394: my $home=&homeserver($uname,$udom);
2395: if ($home eq 'no_host') {
2396: return -1;
2397: }
2398: my $answer=&reply("currentversion:$fname",$home);
2399: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2400: return -1;
2401: }
2402: return $answer;
2403: }
2404:
2405: #
2406: # Return special version number of resource if set by override, empty otherwise
2407: #
2408: sub usedversion {
2409: my $fname=shift;
2410: unless ($fname) { $fname=$env{'request.uri'}; }
2411: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2412: if ($urlversion) { return $urlversion; }
2413: return '';
2414: }
2415:
2416: # ----------------------------- Subscribe to a resource, return URL if possible
2417:
2418: sub subscribe {
2419: my $fname=shift;
2420: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2421: $fname=~s/[\n\r]//g;
2422: my $author=$fname;
2423: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2424: my ($udom,$uname)=split(/\//,$author);
2425: my $home=homeserver($uname,$udom);
2426: if ($home eq 'no_host') {
2427: return 'not_found';
2428: }
2429: my $answer=reply("sub:$fname",$home);
2430: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2431: $answer.=' by '.$home;
2432: }
2433: return $answer;
2434: }
2435:
2436: # -------------------------------------------------------------- Replicate file
2437:
2438: sub repcopy {
2439: my $filename=shift;
2440: $filename=~s/\/+/\//g;
2441: my $londocroot = $perlvar{'lonDocRoot'};
2442: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2443: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2444: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2445: $filename=~m{^/*(uploaded|editupload)/}) {
2446: return &repcopy_userfile($filename);
2447: }
2448: $filename=~s/[\n\r]//g;
2449: my $transname="$filename.in.transfer";
2450: # FIXME: this should flock
2451: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2452: my $remoteurl=subscribe($filename);
2453: if ($remoteurl =~ /^con_lost by/) {
2454: &logthis("Subscribe returned $remoteurl: $filename");
2455: return 'unavailable';
2456: } elsif ($remoteurl eq 'not_found') {
2457: #&logthis("Subscribe returned not_found: $filename");
2458: return 'not_found';
2459: } elsif ($remoteurl =~ /^rejected by/) {
2460: &logthis("Subscribe returned $remoteurl: $filename");
2461: return 'forbidden';
2462: } elsif ($remoteurl eq 'directory') {
2463: return 'ok';
2464: } else {
2465: my $author=$filename;
2466: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2467: my ($udom,$uname)=split(/\//,$author);
2468: my $home=homeserver($uname,$udom);
2469: unless ($home eq $perlvar{'lonHostID'}) {
2470: my @parts=split(/\//,$filename);
2471: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2472: if ($path ne "$londocroot/res") {
2473: &logthis("Malconfiguration for replication: $filename");
2474: return 'bad_request';
2475: }
2476: my $count;
2477: for ($count=5;$count<$#parts;$count++) {
2478: $path.="/$parts[$count]";
2479: if ((-e $path)!=1) {
2480: mkdir($path,0777);
2481: }
2482: }
2483: my $ua=new LWP::UserAgent;
2484: my $request=new HTTP::Request('GET',"$remoteurl");
2485: my $response=$ua->request($request,$transname);
2486: if ($response->is_error()) {
2487: unlink($transname);
2488: my $message=$response->status_line;
2489: &logthis("<font color=\"blue\">WARNING:"
2490: ." LWP get: $message: $filename</font>");
2491: return 'unavailable';
2492: } else {
2493: if ($remoteurl!~/\.meta$/) {
2494: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2495: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2496: if ($mresponse->is_error()) {
2497: unlink($filename.'.meta');
2498: &logthis(
2499: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2500: }
2501: }
2502: rename($transname,$filename);
2503: return 'ok';
2504: }
2505: }
2506: }
2507: }
2508:
2509: # ------------------------------------------------ Get server side include body
2510: sub ssi_body {
2511: my ($filelink,%form)=@_;
2512: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2513: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2514: }
2515: my $output='';
2516: my $response;
2517: if ($filelink=~/^https?\:/) {
2518: ($output,$response)=&externalssi($filelink);
2519: } else {
2520: $filelink .= $filelink=~/\?/ ? '&' : '?';
2521: $filelink .= 'inhibitmenu=yes';
2522: ($output,$response)=&ssi($filelink,%form);
2523: }
2524: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2525: $output=~s/^.*?\<body[^\>]*\>//si;
2526: $output=~s/\<\/body\s*\>.*?$//si;
2527: if (wantarray) {
2528: return ($output, $response);
2529: } else {
2530: return $output;
2531: }
2532: }
2533:
2534: # --------------------------------------------------------- Server Side Include
2535:
2536: sub absolute_url {
2537: my ($host_name) = @_;
2538: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2539: if ($host_name eq '') {
2540: $host_name = $ENV{'SERVER_NAME'};
2541: }
2542: return $protocol.$host_name;
2543: }
2544:
2545: #
2546: # Server side include.
2547: # Parameters:
2548: # fn Possibly encrypted resource name/id.
2549: # form Hash that describes how the rendering should be done
2550: # and other things.
2551: # Returns:
2552: # Scalar context: The content of the response.
2553: # Array context: 2 element list of the content and the full response object.
2554: #
2555: sub ssi {
2556:
2557: my ($fn,%form)=@_;
2558: my $ua=new LWP::UserAgent;
2559: my $request;
2560:
2561: $form{'no_update_last_known'}=1;
2562: &Apache::lonenc::check_encrypt(\$fn);
2563: if (%form) {
2564: $request=new HTTP::Request('POST',&absolute_url().$fn);
2565: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2566: } else {
2567: $request=new HTTP::Request('GET',&absolute_url().$fn);
2568: }
2569:
2570: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2571: my $response=$ua->request($request);
2572:
2573: if (wantarray) {
2574: return ($response->content, $response);
2575: } else {
2576: return $response->content;
2577: }
2578: }
2579:
2580: sub externalssi {
2581: my ($url)=@_;
2582: my $ua=new LWP::UserAgent;
2583: my $request=new HTTP::Request('GET',$url);
2584: my $response=$ua->request($request);
2585: if (wantarray) {
2586: return ($response->content, $response);
2587: } else {
2588: return $response->content;
2589: }
2590: }
2591:
2592: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2593:
2594: sub allowuploaded {
2595: my ($srcurl,$url)=@_;
2596: $url=&clutter(&declutter($url));
2597: my $dir=$url;
2598: $dir=~s/\/[^\/]+$//;
2599: my %httpref=();
2600: my $httpurl=&hreflocation('',$url);
2601: $httpref{'httpref.'.$httpurl}=$srcurl;
2602: &Apache::lonnet::appenv(\%httpref);
2603: }
2604:
2605: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2606: # input: action, courseID, current domain, intended
2607: # path to file, source of file, instruction to parse file for objects,
2608: # ref to hash for embedded objects,
2609: # ref to hash for codebase of java objects.
2610: # reference to scalar to accommodate mime type determined
2611: # from File::MMagic if $parser = parse.
2612: #
2613: # output: url to file (if action was uploaddoc),
2614: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2615: #
2616: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2617: # course.
2618: #
2619: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2620: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2621: # course's home server.
2622: #
2623: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2624: # be copied from $source (current location) to
2625: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2626: # and will then be copied to
2627: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2628: # course's home server.
2629: #
2630: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2631: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2632: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2633: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2634: # in course's home server.
2635: #
2636:
2637: sub process_coursefile {
2638: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2639: $mimetype)=@_;
2640: my $fetchresult;
2641: my $home=&homeserver($docuname,$docudom);
2642: if ($action eq 'propagate') {
2643: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2644: $home);
2645: } else {
2646: my $fpath = '';
2647: my $fname = $file;
2648: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2649: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2650: my $filepath = &build_filepath($fpath);
2651: if ($action eq 'copy') {
2652: if ($source eq '') {
2653: $fetchresult = 'no source file';
2654: return $fetchresult;
2655: } else {
2656: my $destination = $filepath.'/'.$fname;
2657: rename($source,$destination);
2658: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2659: $home);
2660: }
2661: } elsif ($action eq 'uploaddoc') {
2662: open(my $fh,'>'.$filepath.'/'.$fname);
2663: print $fh $env{'form.'.$source};
2664: close($fh);
2665: if ($parser eq 'parse') {
2666: my $mm = new File::MMagic;
2667: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2668: if ($type eq 'text/html') {
2669: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2670: unless ($parse_result eq 'ok') {
2671: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2672: }
2673: }
2674: if (ref($mimetype)) {
2675: $$mimetype = $type;
2676: }
2677: }
2678: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2679: $home);
2680: if ($fetchresult eq 'ok') {
2681: return '/uploaded/'.$fpath.'/'.$fname;
2682: } else {
2683: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2684: ' to host '.$home.': '.$fetchresult);
2685: return '/adm/notfound.html';
2686: }
2687: }
2688: }
2689: unless ( $fetchresult eq 'ok') {
2690: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2691: ' to host '.$home.': '.$fetchresult);
2692: }
2693: return $fetchresult;
2694: }
2695:
2696: sub build_filepath {
2697: my ($fpath) = @_;
2698: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2699: unless ($fpath eq '') {
2700: my @parts=split('/',$fpath);
2701: foreach my $part (@parts) {
2702: $filepath.= '/'.$part;
2703: if ((-e $filepath)!=1) {
2704: mkdir($filepath,0777);
2705: }
2706: }
2707: }
2708: return $filepath;
2709: }
2710:
2711: sub store_edited_file {
2712: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2713: my $file = $primary_url;
2714: $file =~ s#^/uploaded/$docudom/$docuname/##;
2715: my $fpath = '';
2716: my $fname = $file;
2717: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2718: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2719: my $filepath = &build_filepath($fpath);
2720: open(my $fh,'>'.$filepath.'/'.$fname);
2721: print $fh $content;
2722: close($fh);
2723: my $home=&homeserver($docuname,$docudom);
2724: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2725: $home);
2726: if ($$fetchresult eq 'ok') {
2727: return '/uploaded/'.$fpath.'/'.$fname;
2728: } else {
2729: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2730: ' to host '.$home.': '.$$fetchresult);
2731: return '/adm/notfound.html';
2732: }
2733: }
2734:
2735: sub clean_filename {
2736: my ($fname,$args)=@_;
2737: # Replace Windows backslashes by forward slashes
2738: $fname=~s/\\/\//g;
2739: if (!$args->{'keep_path'}) {
2740: # Get rid of everything but the actual filename
2741: $fname=~s/^.*\/([^\/]+)$/$1/;
2742: }
2743: # Replace spaces by underscores
2744: $fname=~s/\s+/\_/g;
2745: # Replace all other weird characters by nothing
2746: $fname=~s{[^/\w\.\-]}{}g;
2747: # Replace all .\d. sequences with _\d. so they no longer look like version
2748: # numbers
2749: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2750: return $fname;
2751: }
2752: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2753: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2754: # image with the same aspect ratio as the original, but with dimensions which do
2755: # not exceed $resizewidth and $resizeheight.
2756:
2757: sub resizeImage {
2758: my ($img_path,$resizewidth,$resizeheight) = @_;
2759: my $ima = Image::Magick->new;
2760: my $resized;
2761: if (-e $img_path) {
2762: $ima->Read($img_path);
2763: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2764: my $width = $ima->Get('width');
2765: my $height = $ima->Get('height');
2766: if ($width > $resizewidth) {
2767: my $factor = $width/$resizewidth;
2768: my $newheight = $height/$factor;
2769: $ima->Scale(width=>$resizewidth,height=>$newheight);
2770: $resized = 1;
2771: }
2772: }
2773: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2774: my $width = $ima->Get('width');
2775: my $height = $ima->Get('height');
2776: if ($height > $resizeheight) {
2777: my $factor = $height/$resizeheight;
2778: my $newwidth = $width/$factor;
2779: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2780: $resized = 1;
2781: }
2782: }
2783: if ($resized) {
2784: $ima->Write($img_path);
2785: }
2786: }
2787: return;
2788: }
2789:
2790: # --------------- Take an uploaded file and put it into the userfiles directory
2791: # input: $formname - the contents of the file are in $env{"form.$formname"}
2792: # the desired filename is in $env{"form.$formname.filename"}
2793: # $context - possible values: coursedoc, existingfile, overwrite,
2794: # canceloverwrite, or ''.
2795: # if 'coursedoc': upload to the current course
2796: # if 'existingfile': write file to tmp/overwrites directory
2797: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2798: # $context is passed as argument to &finishuserfileupload
2799: # $subdir - directory in userfile to store the file into
2800: # $parser - instruction to parse file for objects ($parser = parse)
2801: # $allfiles - reference to hash for embedded objects
2802: # $codebase - reference to hash for codebase of java objects
2803: # $desuname - username for permanent storage of uploaded file
2804: # $dsetudom - domain for permanaent storage of uploaded file
2805: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2806: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2807: # $resizewidth - width (pixels) to which to resize uploaded image
2808: # $resizeheight - height (pixels) to which to resize uploaded image
2809: # $mimetype - reference to scalar to accommodate mime type determined
2810: # from File::MMagic.
2811: #
2812: # output: url of file in userspace, or error: <message>
2813: # or /adm/notfound.html if failure to upload occurse
2814:
2815: sub userfileupload {
2816: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2817: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2818: if (!defined($subdir)) { $subdir='unknown'; }
2819: my $fname=$env{'form.'.$formname.'.filename'};
2820: $fname=&clean_filename($fname);
2821: # See if there is anything left
2822: unless ($fname) { return 'error: no uploaded file'; }
2823: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2824: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2825: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2826: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2827: my $now = time;
2828: my $filepath;
2829: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2830: $filepath = 'tmp/helprequests/'.$now;
2831: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2832: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2833: '_'.$env{'user.domain'}.'/pending';
2834: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2835: my ($docuname,$docudom);
2836: if ($destudom) {
2837: $docudom = $destudom;
2838: } else {
2839: $docudom = $env{'user.domain'};
2840: }
2841: if ($destuname) {
2842: $docuname = $destuname;
2843: } else {
2844: $docuname = $env{'user.name'};
2845: }
2846: if (exists($env{'form.group'})) {
2847: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2848: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2849: }
2850: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2851: if ($context eq 'canceloverwrite') {
2852: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2853: if (-e $tempfile) {
2854: my @info = stat($tempfile);
2855: if ($info[9] eq $env{'form.timestamp'}) {
2856: unlink($tempfile);
2857: }
2858: }
2859: return;
2860: }
2861: }
2862: # Create the directory if not present
2863: my @parts=split(/\//,$filepath);
2864: my $fullpath = $perlvar{'lonDaemons'};
2865: for (my $i=0;$i<@parts;$i++) {
2866: $fullpath .= '/'.$parts[$i];
2867: if ((-e $fullpath)!=1) {
2868: mkdir($fullpath,0777);
2869: }
2870: }
2871: open(my $fh,'>'.$fullpath.'/'.$fname);
2872: print $fh $env{'form.'.$formname};
2873: close($fh);
2874: if ($context eq 'existingfile') {
2875: my @info = stat($fullpath.'/'.$fname);
2876: return ($fullpath.'/'.$fname,$info[9]);
2877: } else {
2878: return $fullpath.'/'.$fname;
2879: }
2880: }
2881: if ($subdir eq 'scantron') {
2882: $fname = 'scantron_orig_'.$fname;
2883: } else {
2884: $fname="$subdir/$fname";
2885: }
2886: if ($context eq 'coursedoc') {
2887: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2888: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2889: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2890: return &finishuserfileupload($docuname,$docudom,
2891: $formname,$fname,$parser,$allfiles,
2892: $codebase,$thumbwidth,$thumbheight,
2893: $resizewidth,$resizeheight,$context,$mimetype);
2894: } else {
2895: $fname=$env{'form.folder'}.'/'.$fname;
2896: return &process_coursefile('uploaddoc',$docuname,$docudom,
2897: $fname,$formname,$parser,
2898: $allfiles,$codebase,$mimetype);
2899: }
2900: } elsif (defined($destuname)) {
2901: my $docuname=$destuname;
2902: my $docudom=$destudom;
2903: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2904: $parser,$allfiles,$codebase,
2905: $thumbwidth,$thumbheight,
2906: $resizewidth,$resizeheight,$context,$mimetype);
2907: } else {
2908: my $docuname=$env{'user.name'};
2909: my $docudom=$env{'user.domain'};
2910: if (exists($env{'form.group'})) {
2911: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2912: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2913: }
2914: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2915: $parser,$allfiles,$codebase,
2916: $thumbwidth,$thumbheight,
2917: $resizewidth,$resizeheight,$context,$mimetype);
2918: }
2919: }
2920:
2921: sub finishuserfileupload {
2922: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2923: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2924: my $path=$docudom.'/'.$docuname.'/';
2925: my $filepath=$perlvar{'lonDocRoot'};
2926:
2927: my ($fnamepath,$file,$fetchthumb);
2928: $file=$fname;
2929: if ($fname=~m|/|) {
2930: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2931: $path.=$fnamepath.'/';
2932: }
2933: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2934: my $count;
2935: for ($count=4;$count<=$#parts;$count++) {
2936: $filepath.="/$parts[$count]";
2937: if ((-e $filepath)!=1) {
2938: mkdir($filepath,0777);
2939: }
2940: }
2941:
2942: # Save the file
2943: {
2944: if (!open(FH,'>'.$filepath.'/'.$file)) {
2945: &logthis('Failed to create '.$filepath.'/'.$file);
2946: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2947: return '/adm/notfound.html';
2948: }
2949: if ($context eq 'overwrite') {
2950: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2951: my $target = $filepath.'/'.$file;
2952: if (-e $source) {
2953: my @info = stat($source);
2954: if ($info[9] eq $env{'form.timestamp'}) {
2955: unless (&File::Copy::move($source,$target)) {
2956: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2957: return "Moving from $source failed";
2958: }
2959: } else {
2960: return "Temporary file: $source had unexpected date/time for last modification";
2961: }
2962: } else {
2963: return "Temporary file: $source missing";
2964: }
2965: } elsif (!print FH ($env{'form.'.$formname})) {
2966: &logthis('Failed to write to '.$filepath.'/'.$file);
2967: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2968: return '/adm/notfound.html';
2969: }
2970: close(FH);
2971: if ($resizewidth && $resizeheight) {
2972: my $mm = new File::MMagic;
2973: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2974: if ($mime_type =~ m{^image/}) {
2975: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2976: }
2977: }
2978: }
2979: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
2980: if (ref($mimetype)) {
2981: if ($$mimetype eq '') {
2982: my $mm = new File::MMagic;
2983: my $type = $mm->checktype_filename($filepath.'/'.$file);
2984: $$mimetype = $type;
2985: }
2986: }
2987: }
2988: if ($parser eq 'parse') {
2989: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
2990: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2991: $allfiles,$codebase);
2992: unless ($parse_result eq 'ok') {
2993: &logthis('Failed to parse '.$filepath.$file.
2994: ' for embedded media: '.$parse_result);
2995: }
2996: }
2997: }
2998: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2999: my $input = $filepath.'/'.$file;
3000: my $output = $filepath.'/'.'tn-'.$file;
3001: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3002: system("convert -sample $thumbsize $input $output");
3003: if (-e $filepath.'/'.'tn-'.$file) {
3004: $fetchthumb = 1;
3005: }
3006: }
3007:
3008: # Notify homeserver to grep it
3009: #
3010: my $docuhome=&homeserver($docuname,$docudom);
3011: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3012: if ($fetchresult eq 'ok') {
3013: if ($fetchthumb) {
3014: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3015: if ($thumbresult ne 'ok') {
3016: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3017: $docuhome.': '.$thumbresult);
3018: }
3019: }
3020: #
3021: # Return the URL to it
3022: return '/uploaded/'.$path.$file;
3023: } else {
3024: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3025: ': '.$fetchresult);
3026: return '/adm/notfound.html';
3027: }
3028: }
3029:
3030: sub extract_embedded_items {
3031: my ($fullpath,$allfiles,$codebase,$content) = @_;
3032: my @state = ();
3033: my (%lastids,%related,%shockwave,%flashvars);
3034: my %javafiles = (
3035: codebase => '',
3036: code => '',
3037: archive => ''
3038: );
3039: my %mediafiles = (
3040: src => '',
3041: movie => '',
3042: );
3043: my $p;
3044: if ($content) {
3045: $p = HTML::LCParser->new($content);
3046: } else {
3047: $p = HTML::LCParser->new($fullpath);
3048: }
3049: while (my $t=$p->get_token()) {
3050: if ($t->[0] eq 'S') {
3051: my ($tagname, $attr) = ($t->[1],$t->[2]);
3052: push(@state, $tagname);
3053: if (lc($tagname) eq 'allow') {
3054: &add_filetype($allfiles,$attr->{'src'},'src');
3055: }
3056: if (lc($tagname) eq 'img') {
3057: &add_filetype($allfiles,$attr->{'src'},'src');
3058: }
3059: if (lc($tagname) eq 'a') {
3060: &add_filetype($allfiles,$attr->{'href'},'href');
3061: }
3062: if (lc($tagname) eq 'script') {
3063: my $src;
3064: if ($attr->{'archive'} =~ /\.jar$/i) {
3065: &add_filetype($allfiles,$attr->{'archive'},'archive');
3066: } else {
3067: if ($attr->{'src'} ne '') {
3068: $src = $attr->{'src'};
3069: &add_filetype($allfiles,$src,'src');
3070: }
3071: }
3072: my $text = $p->get_trimmed_text();
3073: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3074: my @swfargs = split(/,/,$1);
3075: foreach my $item (@swfargs) {
3076: $item =~ s/["']//g;
3077: $item =~ s/^\s+//;
3078: $item =~ s/\s+$//;
3079: }
3080: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3081: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3082: push(@{$related{$swfargs[0]}},$swfargs[2]);
3083: } else {
3084: $related{$swfargs[0]} = [$swfargs[2]];
3085: }
3086: }
3087: }
3088: }
3089: if (lc($tagname) eq 'link') {
3090: if (lc($attr->{'rel'}) eq 'stylesheet') {
3091: &add_filetype($allfiles,$attr->{'href'},'href');
3092: }
3093: }
3094: if (lc($tagname) eq 'object' ||
3095: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3096: foreach my $item (keys(%javafiles)) {
3097: $javafiles{$item} = '';
3098: }
3099: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3100: $lastids{lc($tagname)} = $attr->{'id'};
3101: }
3102: }
3103: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3104: my $name = lc($attr->{'name'});
3105: foreach my $item (keys(%javafiles)) {
3106: if ($name eq $item) {
3107: $javafiles{$item} = $attr->{'value'};
3108: last;
3109: }
3110: }
3111: my $pathfrom;
3112: foreach my $item (keys(%mediafiles)) {
3113: if ($name eq $item) {
3114: $pathfrom = $attr->{'value'};
3115: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3116: &add_filetype($allfiles,$pathfrom,$name);
3117: last;
3118: }
3119: }
3120: if ($name eq 'flashvars') {
3121: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3122: }
3123: if ($pathfrom ne '') {
3124: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3125: $pathfrom);
3126: }
3127: }
3128: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3129: foreach my $item (keys(%javafiles)) {
3130: if ($attr->{$item}) {
3131: $javafiles{$item} = $attr->{$item};
3132: last;
3133: }
3134: }
3135: foreach my $item (keys(%mediafiles)) {
3136: if ($attr->{$item}) {
3137: &add_filetype($allfiles,$attr->{$item},$item);
3138: last;
3139: }
3140: }
3141: if (lc($tagname) eq 'embed') {
3142: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3143: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3144: $attr->{'src'});
3145: }
3146: }
3147: }
3148: if ($t->[4] =~ m{/>$}) {
3149: pop(@state);
3150: }
3151: } elsif ($t->[0] eq 'E') {
3152: my ($tagname) = ($t->[1]);
3153: if ($javafiles{'codebase'} ne '') {
3154: $javafiles{'codebase'} .= '/';
3155: }
3156: if (lc($tagname) eq 'applet' ||
3157: lc($tagname) eq 'object' ||
3158: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3159: ) {
3160: foreach my $item (keys(%javafiles)) {
3161: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3162: my $file=$javafiles{'codebase'}.$javafiles{$item};
3163: &add_filetype($allfiles,$file,$item);
3164: }
3165: }
3166: }
3167: pop @state;
3168: }
3169: }
3170: foreach my $id (sort(keys(%flashvars))) {
3171: if ($shockwave{$id} ne '') {
3172: my @pairs = split(/\&/,$flashvars{$id});
3173: foreach my $pair (@pairs) {
3174: my ($key,$value) = split(/\=/,$pair);
3175: if ($key eq 'thumb') {
3176: &add_filetype($allfiles,$value,$key);
3177: } elsif ($key eq 'content') {
3178: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3179: my ($ext) = ($value =~ /\.([^.]+)$/);
3180: if ($ext ne '') {
3181: &add_filetype($allfiles,$path.$value,$ext);
3182: }
3183: }
3184: }
3185: }
3186: }
3187: return 'ok';
3188: }
3189:
3190: sub add_filetype {
3191: my ($allfiles,$file,$type)=@_;
3192: if (exists($allfiles->{$file})) {
3193: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3194: push(@{$allfiles->{$file}}, &escape($type));
3195: }
3196: } else {
3197: @{$allfiles->{$file}} = (&escape($type));
3198: }
3199: }
3200:
3201: sub embedded_dependency {
3202: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3203: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3204: if (($identifier ne '') &&
3205: (ref($related->{$identifier}) eq 'ARRAY') &&
3206: ($pathfrom ne '')) {
3207: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3208: foreach my $dep (@{$related->{$identifier}}) {
3209: &add_filetype($allfiles,$path.$dep,'object');
3210: }
3211: }
3212: }
3213: return;
3214: }
3215:
3216: sub removeuploadedurl {
3217: my ($url)=@_;
3218: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3219: return &removeuserfile($uname,$udom,$fname);
3220: }
3221:
3222: sub removeuserfile {
3223: my ($docuname,$docudom,$fname)=@_;
3224: my $home=&homeserver($docuname,$docudom);
3225: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3226: if ($result eq 'ok') {
3227: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3228: my $metafile = $fname.'.meta';
3229: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3230: my $url = "/uploaded/$docudom/$docuname/$fname";
3231: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3232: my $sqlresult =
3233: &update_portfolio_table($docuname,$docudom,$file,
3234: 'portfolio_metadata',$group,
3235: 'delete');
3236: }
3237: }
3238: return $result;
3239: }
3240:
3241: sub mkdiruserfile {
3242: my ($docuname,$docudom,$dir)=@_;
3243: my $home=&homeserver($docuname,$docudom);
3244: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3245: }
3246:
3247: sub renameuserfile {
3248: my ($docuname,$docudom,$old,$new)=@_;
3249: my $home=&homeserver($docuname,$docudom);
3250: my $result = &reply("renameuserfile:$docudom:$docuname:".
3251: &escape("$old").':'.&escape("$new"),$home);
3252: if ($result eq 'ok') {
3253: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3254: my $oldmeta = $old.'.meta';
3255: my $newmeta = $new.'.meta';
3256: my $metaresult =
3257: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3258: my $url = "/uploaded/$docudom/$docuname/$old";
3259: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3260: my $sqlresult =
3261: &update_portfolio_table($docuname,$docudom,$file,
3262: 'portfolio_metadata',$group,
3263: 'delete');
3264: }
3265: }
3266: return $result;
3267: }
3268:
3269: # ------------------------------------------------------------------------- Log
3270:
3271: sub log {
3272: my ($dom,$nam,$hom,$what)=@_;
3273: return critical("log:$dom:$nam:$what",$hom);
3274: }
3275:
3276: # ------------------------------------------------------------------ Course Log
3277: #
3278: # This routine flushes several buffers of non-mission-critical nature
3279: #
3280:
3281: sub flushcourselogs {
3282: &logthis('Flushing log buffers');
3283: #
3284: # course logs
3285: # This is a log of all transactions in a course, which can be used
3286: # for data mining purposes
3287: #
3288: # It also collects the courseid database, which lists last transaction
3289: # times and course titles for all courseids
3290: #
3291: my %courseidbuffer=();
3292: foreach my $crsid (keys(%courselogs)) {
3293: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3294: &escape($courselogs{$crsid}),
3295: $coursehombuf{$crsid}) eq 'ok') {
3296: delete $courselogs{$crsid};
3297: } else {
3298: &logthis('Failed to flush log buffer for '.$crsid);
3299: if (length($courselogs{$crsid})>40000) {
3300: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3301: " exceeded maximum size, deleting.</font>");
3302: delete $courselogs{$crsid};
3303: }
3304: }
3305: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3306: 'description' => $coursedescrbuf{$crsid},
3307: 'inst_code' => $courseinstcodebuf{$crsid},
3308: 'type' => $coursetypebuf{$crsid},
3309: 'owner' => $courseownerbuf{$crsid},
3310: };
3311: }
3312: #
3313: # Write course id database (reverse lookup) to homeserver of courses
3314: # Is used in pickcourse
3315: #
3316: foreach my $crs_home (keys(%courseidbuffer)) {
3317: my $response = &courseidput(&host_domain($crs_home),
3318: $courseidbuffer{$crs_home},
3319: $crs_home,'timeonly');
3320: }
3321: #
3322: # File accesses
3323: # Writes to the dynamic metadata of resources to get hit counts, etc.
3324: #
3325: foreach my $entry (keys(%accesshash)) {
3326: if ($entry =~ /___count$/) {
3327: my ($dom,$name);
3328: ($dom,$name,undef)=
3329: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3330: if (! defined($dom) || $dom eq '' ||
3331: ! defined($name) || $name eq '') {
3332: my $cid = $env{'request.course.id'};
3333: $dom = $env{'request.'.$cid.'.domain'};
3334: $name = $env{'request.'.$cid.'.num'};
3335: }
3336: my $value = $accesshash{$entry};
3337: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3338: my %temphash=($url => $value);
3339: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3340: if ($result eq 'ok') {
3341: delete $accesshash{$entry};
3342: }
3343: } else {
3344: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3345: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3346: my %temphash=($entry => $accesshash{$entry});
3347: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3348: delete $accesshash{$entry};
3349: }
3350: }
3351: }
3352: #
3353: # Roles
3354: # Reverse lookup of user roles for course faculty/staff and co-authorship
3355: #
3356: foreach my $entry (keys(%userrolehash)) {
3357: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3358: split(/\:/,$entry);
3359: if (&Apache::lonnet::put('nohist_userroles',
3360: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3361: $rudom,$runame) eq 'ok') {
3362: delete $userrolehash{$entry};
3363: }
3364: }
3365: #
3366: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3367: #
3368: my %domrolebuffer = ();
3369: foreach my $entry (keys(%domainrolehash)) {
3370: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3371: if ($domrolebuffer{$rudom}) {
3372: $domrolebuffer{$rudom}.='&'.&escape($entry).
3373: '='.&escape($domainrolehash{$entry});
3374: } else {
3375: $domrolebuffer{$rudom}.=&escape($entry).
3376: '='.&escape($domainrolehash{$entry});
3377: }
3378: delete $domainrolehash{$entry};
3379: }
3380: foreach my $dom (keys(%domrolebuffer)) {
3381: my %servers = &get_servers($dom,'library');
3382: foreach my $tryserver (keys(%servers)) {
3383: unless (&reply('domroleput:'.$dom.':'.
3384: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3385: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3386: }
3387: }
3388: }
3389: $dumpcount++;
3390: }
3391:
3392: sub courselog {
3393: my $what=shift;
3394: $what=time.':'.$what;
3395: unless ($env{'request.course.id'}) { return ''; }
3396: $coursedombuf{$env{'request.course.id'}}=
3397: $env{'course.'.$env{'request.course.id'}.'.domain'};
3398: $coursenumbuf{$env{'request.course.id'}}=
3399: $env{'course.'.$env{'request.course.id'}.'.num'};
3400: $coursehombuf{$env{'request.course.id'}}=
3401: $env{'course.'.$env{'request.course.id'}.'.home'};
3402: $coursedescrbuf{$env{'request.course.id'}}=
3403: $env{'course.'.$env{'request.course.id'}.'.description'};
3404: $courseinstcodebuf{$env{'request.course.id'}}=
3405: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3406: $courseownerbuf{$env{'request.course.id'}}=
3407: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3408: $coursetypebuf{$env{'request.course.id'}}=
3409: $env{'course.'.$env{'request.course.id'}.'.type'};
3410: if (defined $courselogs{$env{'request.course.id'}}) {
3411: $courselogs{$env{'request.course.id'}}.='&'.$what;
3412: } else {
3413: $courselogs{$env{'request.course.id'}}.=$what;
3414: }
3415: if (length($courselogs{$env{'request.course.id'}})>4048) {
3416: &flushcourselogs();
3417: }
3418: }
3419:
3420: sub courseacclog {
3421: my $fnsymb=shift;
3422: unless ($env{'request.course.id'}) { return ''; }
3423: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3424: if ($fnsymb=~/$LONCAPA::assess_re/) {
3425: $what.=':POST';
3426: # FIXME: Probably ought to escape things....
3427: foreach my $key (keys(%env)) {
3428: if ($key=~/^form\.(.*)/) {
3429: my $formitem = $1;
3430: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3431: $what.=':'.$formitem.'='.$env{$key};
3432: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3433: $what.=':'.$formitem.'='.$env{$key};
3434: }
3435: }
3436: }
3437: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3438: # FIXME: We should not be depending on a form parameter that someone
3439: # editing lonsearchcat.pm might change in the future.
3440: if ($env{'form.phase'} eq 'course_search') {
3441: $what.= ':POST';
3442: # FIXME: Probably ought to escape things....
3443: foreach my $element ('courseexp','crsfulltext','crsrelated',
3444: 'crsdiscuss') {
3445: $what.=':'.$element.'='.$env{'form.'.$element};
3446: }
3447: }
3448: }
3449: &courselog($what);
3450: }
3451:
3452: sub countacc {
3453: my $url=&declutter(shift);
3454: return if (! defined($url) || $url eq '');
3455: unless ($env{'request.course.id'}) { return ''; }
3456: #
3457: # Mark that this url was used in this course
3458: #
3459: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3460: #
3461: # Increase the access count for this resource in this child process
3462: #
3463: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3464: $accesshash{$key}++;
3465: }
3466:
3467: sub linklog {
3468: my ($from,$to)=@_;
3469: $from=&declutter($from);
3470: $to=&declutter($to);
3471: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3472: $accesshash{$to.'___'.$from.'___goto'}=1;
3473: }
3474:
3475: sub statslog {
3476: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3477: if ($users<2) { return; }
3478: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3479: 'course' => $env{'request.course.id'},
3480: 'sections' => '"all"',
3481: 'num_students' => $users,
3482: 'part' => $part,
3483: 'symb' => $symb,
3484: 'mean_tries' => $av_attempts,
3485: 'deg_of_diff' => $degdiff});
3486: foreach my $key (keys(%dynstore)) {
3487: $accesshash{$key}=$dynstore{$key};
3488: }
3489: }
3490:
3491: sub userrolelog {
3492: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3493: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
3494: ($trole=~/^in/) || ($trole=~/^cc/) ||
3495: ($trole=~/^ep/) || ($trole=~/^cr/) ||
3496: ($trole=~/^ta/) || ($trole=~/^co/)) {
3497: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3498: $userrolehash
3499: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3500: =$tend.':'.$tstart;
3501: }
3502: if (($env{'request.role'} =~ /dc\./) &&
3503: (($trole=~/^au/) || ($trole=~/^in/) ||
3504: ($trole=~/^cc/) || ($trole=~/^ep/) ||
3505: ($trole=~/^cr/) || ($trole=~/^ta/) ||
3506: ($trole=~/^co/))) {
3507: $userrolehash
3508: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3509: =$tend.':'.$tstart;
3510: }
3511: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
3512: ($trole=~/^li/) || ($trole=~/^li/) ||
3513: ($trole=~/^au/) || ($trole=~/^dg/) ||
3514: ($trole=~/^sc/)) {
3515: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3516: $domainrolehash
3517: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3518: = $tend.':'.$tstart;
3519: }
3520: }
3521:
3522: sub courserolelog {
3523: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3524: if (($trole eq 'cc') || ($trole eq 'in') ||
3525: ($trole eq 'ep') || ($trole eq 'ad') ||
3526: ($trole eq 'ta') || ($trole eq 'st') ||
3527: ($trole=~/^cr/) || ($trole eq 'gr') ||
3528: ($trole eq 'co')) {
3529: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3530: my $cdom = $1;
3531: my $cnum = $2;
3532: my $sec = $3;
3533: my $namespace = 'rolelog';
3534: my %storehash = (
3535: role => $trole,
3536: start => $tstart,
3537: end => $tend,
3538: selfenroll => $selfenroll,
3539: context => $context,
3540: );
3541: if ($trole eq 'gr') {
3542: $namespace = 'groupslog';
3543: $storehash{'group'} = $sec;
3544: } else {
3545: $storehash{'section'} = $sec;
3546: }
3547: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3548: if (($trole ne 'st') || ($sec ne '')) {
3549: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3550: }
3551: }
3552: }
3553: return;
3554: }
3555:
3556: sub get_course_adv_roles {
3557: my ($cid,$codes) = @_;
3558: $cid=$env{'request.course.id'} unless (defined($cid));
3559: my %coursehash=&coursedescription($cid);
3560: my $crstype = &Apache::loncommon::course_type($cid);
3561: my %nothide=();
3562: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3563: if ($user !~ /:/) {
3564: $nothide{join(':',split(/[\@]/,$user))}=1;
3565: } else {
3566: $nothide{$user}=1;
3567: }
3568: }
3569: my %returnhash=();
3570: my %dumphash=
3571: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3572: my $now=time;
3573: my %privileged;
3574: foreach my $entry (keys(%dumphash)) {
3575: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3576: if (($tstart) && ($tstart<0)) { next; }
3577: if (($tend) && ($tend<$now)) { next; }
3578: if (($tstart) && ($now<$tstart)) { next; }
3579: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3580: if ($username eq '' || $domain eq '') { next; }
3581: unless (ref($privileged{$domain}) eq 'HASH') {
3582: my %dompersonnel =
3583: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3584: $privileged{$domain} = {};
3585: foreach my $server (keys(%dompersonnel)) {
3586: if (ref($dompersonnel{$server}) eq 'HASH') {
3587: foreach my $user (keys(%{$dompersonnel{$server}})) {
3588: my ($trole,$uname,$udom) = split(/:/,$user);
3589: $privileged{$udom}{$uname} = 1;
3590: }
3591: }
3592: }
3593: }
3594: if ((exists($privileged{$domain}{$username})) &&
3595: (!$nothide{$username.':'.$domain})) { next; }
3596: if ($role eq 'cr') { next; }
3597: if ($codes) {
3598: if ($section) { $role .= ':'.$section; }
3599: if ($returnhash{$role}) {
3600: $returnhash{$role}.=','.$username.':'.$domain;
3601: } else {
3602: $returnhash{$role}=$username.':'.$domain;
3603: }
3604: } else {
3605: my $key=&plaintext($role,$crstype);
3606: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3607: if ($returnhash{$key}) {
3608: $returnhash{$key}.=','.$username.':'.$domain;
3609: } else {
3610: $returnhash{$key}=$username.':'.$domain;
3611: }
3612: }
3613: }
3614: return %returnhash;
3615: }
3616:
3617: sub get_my_roles {
3618: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3619: unless (defined($uname)) { $uname=$env{'user.name'}; }
3620: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3621: my (%dumphash,%nothide);
3622: if ($context eq 'userroles') {
3623: my $extra = &freeze_escape({'skipcheck' => 1});
3624: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3625: } else {
3626: %dumphash=
3627: &dump('nohist_userroles',$udom,$uname);
3628: if ($hidepriv) {
3629: my %coursehash=&coursedescription($udom.'_'.$uname);
3630: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3631: if ($user !~ /:/) {
3632: $nothide{join(':',split(/[\@]/,$user))} = 1;
3633: } else {
3634: $nothide{$user} = 1;
3635: }
3636: }
3637: }
3638: }
3639: my %returnhash=();
3640: my $now=time;
3641: my %privileged;
3642: foreach my $entry (keys(%dumphash)) {
3643: my ($role,$tend,$tstart);
3644: if ($context eq 'userroles') {
3645: next if ($entry =~ /^rolesdef/);
3646: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3647: } else {
3648: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3649: }
3650: if (($tstart) && ($tstart<0)) { next; }
3651: my $status = 'active';
3652: if (($tend) && ($tend<=$now)) {
3653: $status = 'previous';
3654: }
3655: if (($tstart) && ($now<$tstart)) {
3656: $status = 'future';
3657: }
3658: if (ref($types) eq 'ARRAY') {
3659: if (!grep(/^\Q$status\E$/,@{$types})) {
3660: next;
3661: }
3662: } else {
3663: if ($status ne 'active') {
3664: next;
3665: }
3666: }
3667: my ($rolecode,$username,$domain,$section,$area);
3668: if ($context eq 'userroles') {
3669: ($area,$rolecode) = split(/_/,$entry);
3670: (undef,$domain,$username,$section) = split(/\//,$area);
3671: } else {
3672: ($role,$username,$domain,$section) = split(/\:/,$entry);
3673: }
3674: if (ref($roledoms) eq 'ARRAY') {
3675: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3676: next;
3677: }
3678: }
3679: if (ref($roles) eq 'ARRAY') {
3680: if (!grep(/^\Q$role\E$/,@{$roles})) {
3681: if ($role =~ /^cr\//) {
3682: if (!grep(/^cr$/,@{$roles})) {
3683: next;
3684: }
3685: } elsif ($role =~ /^gr\//) {
3686: if (!grep(/^gr$/,@{$roles})) {
3687: next;
3688: }
3689: } else {
3690: next;
3691: }
3692: }
3693: }
3694: if ($hidepriv) {
3695: if ($context eq 'userroles') {
3696: if ((&privileged($username,$domain)) &&
3697: (!$nothide{$username.':'.$domain})) {
3698: next;
3699: }
3700: } else {
3701: unless (ref($privileged{$domain}) eq 'HASH') {
3702: my %dompersonnel =
3703: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3704: $privileged{$domain} = {};
3705: if (keys(%dompersonnel)) {
3706: foreach my $server (keys(%dompersonnel)) {
3707: if (ref($dompersonnel{$server}) eq 'HASH') {
3708: foreach my $user (keys(%{$dompersonnel{$server}})) {
3709: my ($trole,$uname,$udom) = split(/:/,$user);
3710: $privileged{$udom}{$uname} = $trole;
3711: }
3712: }
3713: }
3714: }
3715: }
3716: if (exists($privileged{$domain}{$username})) {
3717: if (!$nothide{$username.':'.$domain}) {
3718: next;
3719: }
3720: }
3721: }
3722: }
3723: if ($withsec) {
3724: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3725: $tstart.':'.$tend;
3726: } else {
3727: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3728: }
3729: }
3730: return %returnhash;
3731: }
3732:
3733: # ----------------------------------------------------- Frontpage Announcements
3734: #
3735: #
3736:
3737: sub postannounce {
3738: my ($server,$text)=@_;
3739: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3740: unless ($text=~/\w/) { $text=''; }
3741: return &reply('setannounce:'.&escape($text),$server);
3742: }
3743:
3744: sub getannounce {
3745:
3746: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3747: my $announcement='';
3748: while (my $line = <$fh>) { $announcement .= $line; }
3749: close($fh);
3750: if ($announcement=~/\w/) {
3751: return
3752: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3753: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3754: } else {
3755: return '';
3756: }
3757: } else {
3758: return '';
3759: }
3760: }
3761:
3762: # ---------------------------------------------------------- Course ID routines
3763: # Deal with domain's nohist_courseid.db files
3764: #
3765:
3766: sub courseidput {
3767: my ($domain,$storehash,$coursehome,$caller) = @_;
3768: return unless (ref($storehash) eq 'HASH');
3769: my $outcome;
3770: if ($caller eq 'timeonly') {
3771: my $cids = '';
3772: foreach my $item (keys(%$storehash)) {
3773: $cids.=&escape($item).'&';
3774: }
3775: $cids=~s/\&$//;
3776: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3777: $coursehome);
3778: } else {
3779: my $items = '';
3780: foreach my $item (keys(%$storehash)) {
3781: $items.= &escape($item).'='.
3782: &freeze_escape($$storehash{$item}).'&';
3783: }
3784: $items=~s/\&$//;
3785: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3786: $coursehome);
3787: }
3788: if ($outcome eq 'unknown_cmd') {
3789: my $what;
3790: foreach my $cid (keys(%$storehash)) {
3791: $what .= &escape($cid).'=';
3792: foreach my $item ('description','inst_code','owner','type') {
3793: $what .= &escape($storehash->{$cid}{$item}).':';
3794: }
3795: $what =~ s/\:$/&/;
3796: }
3797: $what =~ s/\&$//;
3798: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3799: } else {
3800: return $outcome;
3801: }
3802: }
3803:
3804: sub courseiddump {
3805: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3806: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3807: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3808: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3809: my $as_hash = 1;
3810: my %returnhash;
3811: if (!$domfilter) { $domfilter=''; }
3812: my %libserv = &all_library();
3813: foreach my $tryserver (keys(%libserv)) {
3814: if ( ( $hostidflag == 1
3815: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3816: || (!defined($hostidflag)) ) {
3817:
3818: if (($domfilter eq '') ||
3819: (&host_domain($tryserver) eq $domfilter)) {
3820: my $rep =
3821: &reply('courseiddump:'.&host_domain($tryserver).':'.
3822: $sincefilter.':'.&escape($descfilter).':'.
3823: &escape($instcodefilter).':'.&escape($ownerfilter).
3824: ':'.&escape($coursefilter).':'.&escape($typefilter).
3825: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3826: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3827: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3828: &escape($cc_clone).':'.$cloneonly.':'.
3829: &escape($createdbefore).':'.&escape($createdafter).':'.
3830: &escape($creationcontext).':'.$domcloner,
3831: $tryserver);
3832: my @pairs=split(/\&/,$rep);
3833: foreach my $item (@pairs) {
3834: my ($key,$value)=split(/\=/,$item,2);
3835: $key = &unescape($key);
3836: next if ($key =~ /^error: 2 /);
3837: my $result = &thaw_unescape($value);
3838: if (ref($result) eq 'HASH') {
3839: $returnhash{$key}=$result;
3840: } else {
3841: my @responses = split(/:/,$value);
3842: my @items = ('description','inst_code','owner','type');
3843: for (my $i=0; $i<@responses; $i++) {
3844: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3845: }
3846: }
3847: }
3848: }
3849: }
3850: }
3851: return %returnhash;
3852: }
3853:
3854: sub courselastaccess {
3855: my ($cdom,$cnum,$hostidref) = @_;
3856: my %returnhash;
3857: if ($cdom && $cnum) {
3858: my $chome = &homeserver($cnum,$cdom);
3859: if ($chome ne 'no_host') {
3860: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3861: &extract_lastaccess(\%returnhash,$rep);
3862: }
3863: } else {
3864: if (!$cdom) { $cdom=''; }
3865: my %libserv = &all_library();
3866: foreach my $tryserver (keys(%libserv)) {
3867: if (ref($hostidref) eq 'ARRAY') {
3868: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3869: }
3870: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3871: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3872: &extract_lastaccess(\%returnhash,$rep);
3873: }
3874: }
3875: }
3876: return %returnhash;
3877: }
3878:
3879: sub extract_lastaccess {
3880: my ($returnhash,$rep) = @_;
3881: if (ref($returnhash) eq 'HASH') {
3882: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3883: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3884: $rep eq '') {
3885: my @pairs=split(/\&/,$rep);
3886: foreach my $item (@pairs) {
3887: my ($key,$value)=split(/\=/,$item,2);
3888: $key = &unescape($key);
3889: next if ($key =~ /^error: 2 /);
3890: $returnhash->{$key} = &thaw_unescape($value);
3891: }
3892: }
3893: }
3894: return;
3895: }
3896:
3897: # ---------------------------------------------------------- DC e-mail
3898:
3899: sub dcmailput {
3900: my ($domain,$msgid,$message,$server)=@_;
3901: my $status = &Apache::lonnet::critical(
3902: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3903: &escape($message),$server);
3904: return $status;
3905: }
3906:
3907: sub dcmaildump {
3908: my ($dom,$startdate,$enddate,$senders) = @_;
3909: my %returnhash=();
3910:
3911: if (defined(&domain($dom,'primary'))) {
3912: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3913: &escape($enddate).':';
3914: my @esc_senders=map { &escape($_)} @$senders;
3915: $cmd.=&escape(join('&',@esc_senders));
3916: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3917: my ($key,$value) = split(/\=/,$line,2);
3918: if (($key) && ($value)) {
3919: $returnhash{&unescape($key)} = &unescape($value);
3920: }
3921: }
3922: }
3923: return %returnhash;
3924: }
3925: # ---------------------------------------------------------- Domain roles
3926:
3927: sub get_domain_roles {
3928: my ($dom,$roles,$startdate,$enddate)=@_;
3929: if ((!defined($startdate)) || ($startdate eq '')) {
3930: $startdate = '.';
3931: }
3932: if ((!defined($enddate)) || ($enddate eq '')) {
3933: $enddate = '.';
3934: }
3935: my $rolelist;
3936: if (ref($roles) eq 'ARRAY') {
3937: $rolelist = join(':',@{$roles});
3938: }
3939: my %personnel = ();
3940:
3941: my %servers = &get_servers($dom,'library');
3942: foreach my $tryserver (keys(%servers)) {
3943: %{$personnel{$tryserver}}=();
3944: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3945: &escape($startdate).':'.
3946: &escape($enddate).':'.
3947: &escape($rolelist), $tryserver))) {
3948: my ($key,$value) = split(/\=/,$line,2);
3949: if (($key) && ($value)) {
3950: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3951: }
3952: }
3953: }
3954: return %personnel;
3955: }
3956:
3957: # ----------------------------------------------------------- Interval timing
3958:
3959: {
3960: # Caches needed for speedup of navmaps
3961: # We don't want to cache this for very long at all (5 seconds at most)
3962: #
3963: # The user for whom we cache
3964: my $cachedkey='';
3965: # The cached times for this user
3966: my %cachedtimes=();
3967: # When this was last done
3968: my $cachedtime=();
3969:
3970: sub load_all_first_access {
3971: my ($uname,$udom)=@_;
3972: if (($cachedkey eq $uname.':'.$udom) &&
3973: (abs($cachedtime-time)<5)) {
3974: return;
3975: }
3976: $cachedtime=time;
3977: $cachedkey=$uname.':'.$udom;
3978: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
3979: }
3980:
3981: sub get_first_access {
3982: my ($type,$argsymb,$argmap)=@_;
3983: my ($symb,$courseid,$udom,$uname)=&whichuser();
3984: if ($argsymb) { $symb=$argsymb; }
3985: my ($map,$id,$res)=&decode_symb($symb);
3986: if ($argmap) { $map = $argmap; }
3987: if ($type eq 'course') {
3988: $res='course';
3989: } elsif ($type eq 'map') {
3990: $res=&symbread($map);
3991: } else {
3992: $res=$symb;
3993: }
3994: &load_all_first_access($uname,$udom);
3995: return $cachedtimes{"$courseid\0$res"};
3996: }
3997:
3998: sub set_first_access {
3999: my ($type,$interval)=@_;
4000: my ($symb,$courseid,$udom,$uname)=&whichuser();
4001: my ($map,$id,$res)=&decode_symb($symb);
4002: if ($type eq 'course') {
4003: $res='course';
4004: } elsif ($type eq 'map') {
4005: $res=&symbread($map);
4006: } else {
4007: $res=$symb;
4008: }
4009: $cachedkey='';
4010: my $firstaccess=&get_first_access($type,$symb,$map);
4011: if (!$firstaccess) {
4012: my $start = time;
4013: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4014: $udom,$uname);
4015: if ($putres eq 'ok') {
4016: &put('timerinterval',{"$courseid\0$res"=>$interval},
4017: $udom,$uname);
4018: &appenv(
4019: {
4020: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4021: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4022: }
4023: );
4024: }
4025: return $putres;
4026: }
4027: return 'already_set';
4028: }
4029: }
4030: # --------------------------------------------- Set Expire Date for Spreadsheet
4031:
4032: sub expirespread {
4033: my ($uname,$udom,$stype,$usymb)=@_;
4034: my $cid=$env{'request.course.id'};
4035: if ($cid) {
4036: my $now=time;
4037: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4038: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4039: $env{'course.'.$cid.'.num'}.
4040: ':nohist_expirationdates:'.
4041: &escape($key).'='.$now,
4042: $env{'course.'.$cid.'.home'})
4043: }
4044: return 'ok';
4045: }
4046:
4047: # ----------------------------------------------------- Devalidate Spreadsheets
4048:
4049: sub devalidate {
4050: my ($symb,$uname,$udom)=@_;
4051: my $cid=$env{'request.course.id'};
4052: if ($cid) {
4053: # delete the stored spreadsheets for
4054: # - the student level sheet of this user in course's homespace
4055: # - the assessment level sheet for this resource
4056: # for this user in user's homespace
4057: # - current conditional state info
4058: my $key=$uname.':'.$udom.':';
4059: my $status=
4060: &del('nohist_calculatedsheets',
4061: [$key.'studentcalc:'],
4062: $env{'course.'.$cid.'.domain'},
4063: $env{'course.'.$cid.'.num'})
4064: .' '.
4065: &del('nohist_calculatedsheets_'.$cid,
4066: [$key.'assesscalc:'.$symb],$udom,$uname);
4067: unless ($status eq 'ok ok') {
4068: &logthis('Could not devalidate spreadsheet '.
4069: $uname.' at '.$udom.' for '.
4070: $symb.': '.$status);
4071: }
4072: &delenv('user.state.'.$cid);
4073: }
4074: }
4075:
4076: sub get_scalar {
4077: my ($string,$end) = @_;
4078: my $value;
4079: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4080: $value = $1;
4081: } elsif ($$string =~ s/^([^&]*?)&//) {
4082: $value = $1;
4083: }
4084: return &unescape($value);
4085: }
4086:
4087: sub array2str {
4088: my (@array) = @_;
4089: my $result=&arrayref2str(\@array);
4090: $result=~s/^__ARRAY_REF__//;
4091: $result=~s/__END_ARRAY_REF__$//;
4092: return $result;
4093: }
4094:
4095: sub arrayref2str {
4096: my ($arrayref) = @_;
4097: my $result='__ARRAY_REF__';
4098: foreach my $elem (@$arrayref) {
4099: if(ref($elem) eq 'ARRAY') {
4100: $result.=&arrayref2str($elem).'&';
4101: } elsif(ref($elem) eq 'HASH') {
4102: $result.=&hashref2str($elem).'&';
4103: } elsif(ref($elem)) {
4104: #print("Got a ref of ".(ref($elem))." skipping.");
4105: } else {
4106: $result.=&escape($elem).'&';
4107: }
4108: }
4109: $result=~s/\&$//;
4110: $result .= '__END_ARRAY_REF__';
4111: return $result;
4112: }
4113:
4114: sub hash2str {
4115: my (%hash) = @_;
4116: my $result=&hashref2str(\%hash);
4117: $result=~s/^__HASH_REF__//;
4118: $result=~s/__END_HASH_REF__$//;
4119: return $result;
4120: }
4121:
4122: sub hashref2str {
4123: my ($hashref)=@_;
4124: my $result='__HASH_REF__';
4125: foreach my $key (sort(keys(%$hashref))) {
4126: if (ref($key) eq 'ARRAY') {
4127: $result.=&arrayref2str($key).'=';
4128: } elsif (ref($key) eq 'HASH') {
4129: $result.=&hashref2str($key).'=';
4130: } elsif (ref($key)) {
4131: $result.='=';
4132: #print("Got a ref of ".(ref($key))." skipping.");
4133: } else {
4134: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4135: }
4136:
4137: if(ref($hashref->{$key}) eq 'ARRAY') {
4138: $result.=&arrayref2str($hashref->{$key}).'&';
4139: } elsif(ref($hashref->{$key}) eq 'HASH') {
4140: $result.=&hashref2str($hashref->{$key}).'&';
4141: } elsif(ref($hashref->{$key})) {
4142: $result.='&';
4143: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4144: } else {
4145: $result.=&escape($hashref->{$key}).'&';
4146: }
4147: }
4148: $result=~s/\&$//;
4149: $result .= '__END_HASH_REF__';
4150: return $result;
4151: }
4152:
4153: sub str2hash {
4154: my ($string)=@_;
4155: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4156: return %$hash;
4157: }
4158:
4159: sub str2hashref {
4160: my ($string) = @_;
4161:
4162: my %hash;
4163:
4164: if($string !~ /^__HASH_REF__/) {
4165: if (! ($string eq '' || !defined($string))) {
4166: $hash{'error'}='Not hash reference';
4167: }
4168: return (\%hash, $string);
4169: }
4170:
4171: $string =~ s/^__HASH_REF__//;
4172:
4173: while($string !~ /^__END_HASH_REF__/) {
4174: #key
4175: my $key='';
4176: if($string =~ /^__HASH_REF__/) {
4177: ($key, $string)=&str2hashref($string);
4178: if(defined($key->{'error'})) {
4179: $hash{'error'}='Bad data';
4180: return (\%hash, $string);
4181: }
4182: } elsif($string =~ /^__ARRAY_REF__/) {
4183: ($key, $string)=&str2arrayref($string);
4184: if($key->[0] eq 'Array reference error') {
4185: $hash{'error'}='Bad data';
4186: return (\%hash, $string);
4187: }
4188: } else {
4189: $string =~ s/^(.*?)=//;
4190: $key=&unescape($1);
4191: }
4192: $string =~ s/^=//;
4193:
4194: #value
4195: my $value='';
4196: if($string =~ /^__HASH_REF__/) {
4197: ($value, $string)=&str2hashref($string);
4198: if(defined($value->{'error'})) {
4199: $hash{'error'}='Bad data';
4200: return (\%hash, $string);
4201: }
4202: } elsif($string =~ /^__ARRAY_REF__/) {
4203: ($value, $string)=&str2arrayref($string);
4204: if($value->[0] eq 'Array reference error') {
4205: $hash{'error'}='Bad data';
4206: return (\%hash, $string);
4207: }
4208: } else {
4209: $value=&get_scalar(\$string,'__END_HASH_REF__');
4210: }
4211: $string =~ s/^&//;
4212:
4213: $hash{$key}=$value;
4214: }
4215:
4216: $string =~ s/^__END_HASH_REF__//;
4217:
4218: return (\%hash, $string);
4219: }
4220:
4221: sub str2array {
4222: my ($string)=@_;
4223: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4224: return @$array;
4225: }
4226:
4227: sub str2arrayref {
4228: my ($string) = @_;
4229: my @array;
4230:
4231: if($string !~ /^__ARRAY_REF__/) {
4232: if (! ($string eq '' || !defined($string))) {
4233: $array[0]='Array reference error';
4234: }
4235: return (\@array, $string);
4236: }
4237:
4238: $string =~ s/^__ARRAY_REF__//;
4239:
4240: while($string !~ /^__END_ARRAY_REF__/) {
4241: my $value='';
4242: if($string =~ /^__HASH_REF__/) {
4243: ($value, $string)=&str2hashref($string);
4244: if(defined($value->{'error'})) {
4245: $array[0] ='Array reference error';
4246: return (\@array, $string);
4247: }
4248: } elsif($string =~ /^__ARRAY_REF__/) {
4249: ($value, $string)=&str2arrayref($string);
4250: if($value->[0] eq 'Array reference error') {
4251: $array[0] ='Array reference error';
4252: return (\@array, $string);
4253: }
4254: } else {
4255: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4256: }
4257: $string =~ s/^&//;
4258:
4259: push(@array, $value);
4260: }
4261:
4262: $string =~ s/^__END_ARRAY_REF__//;
4263:
4264: return (\@array, $string);
4265: }
4266:
4267: # -------------------------------------------------------------------Temp Store
4268:
4269: sub tmpreset {
4270: my ($symb,$namespace,$domain,$stuname) = @_;
4271: if (!$symb) {
4272: $symb=&symbread();
4273: if (!$symb) { $symb= $env{'request.url'}; }
4274: }
4275: $symb=escape($symb);
4276:
4277: if (!$namespace) { $namespace=$env{'request.state'}; }
4278: $namespace=~s/\//\_/g;
4279: $namespace=~s/\W//g;
4280:
4281: if (!$domain) { $domain=$env{'user.domain'}; }
4282: if (!$stuname) { $stuname=$env{'user.name'}; }
4283: if ($domain eq 'public' && $stuname eq 'public') {
4284: $stuname=$ENV{'REMOTE_ADDR'};
4285: }
4286: my $path=LONCAPA::tempdir();
4287: my %hash;
4288: if (tie(%hash,'GDBM_File',
4289: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4290: &GDBM_WRCREAT(),0640)) {
4291: foreach my $key (keys(%hash)) {
4292: if ($key=~ /:$symb/) {
4293: delete($hash{$key});
4294: }
4295: }
4296: }
4297: }
4298:
4299: sub tmpstore {
4300: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4301:
4302: if (!$symb) {
4303: $symb=&symbread();
4304: if (!$symb) { $symb= $env{'request.url'}; }
4305: }
4306: $symb=escape($symb);
4307:
4308: if (!$namespace) {
4309: # I don't think we would ever want to store this for a course.
4310: # it seems this will only be used if we don't have a course.
4311: #$namespace=$env{'request.course.id'};
4312: #if (!$namespace) {
4313: $namespace=$env{'request.state'};
4314: #}
4315: }
4316: $namespace=~s/\//\_/g;
4317: $namespace=~s/\W//g;
4318: if (!$domain) { $domain=$env{'user.domain'}; }
4319: if (!$stuname) { $stuname=$env{'user.name'}; }
4320: if ($domain eq 'public' && $stuname eq 'public') {
4321: $stuname=$ENV{'REMOTE_ADDR'};
4322: }
4323: my $now=time;
4324: my %hash;
4325: my $path=LONCAPA::tempdir();
4326: if (tie(%hash,'GDBM_File',
4327: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4328: &GDBM_WRCREAT(),0640)) {
4329: $hash{"version:$symb"}++;
4330: my $version=$hash{"version:$symb"};
4331: my $allkeys='';
4332: foreach my $key (keys(%$storehash)) {
4333: $allkeys.=$key.':';
4334: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4335: }
4336: $hash{"$version:$symb:timestamp"}=$now;
4337: $allkeys.='timestamp';
4338: $hash{"$version:keys:$symb"}=$allkeys;
4339: if (untie(%hash)) {
4340: return 'ok';
4341: } else {
4342: return "error:$!";
4343: }
4344: } else {
4345: return "error:$!";
4346: }
4347: }
4348:
4349: # -----------------------------------------------------------------Temp Restore
4350:
4351: sub tmprestore {
4352: my ($symb,$namespace,$domain,$stuname) = @_;
4353:
4354: if (!$symb) {
4355: $symb=&symbread();
4356: if (!$symb) { $symb= $env{'request.url'}; }
4357: }
4358: $symb=escape($symb);
4359:
4360: if (!$namespace) { $namespace=$env{'request.state'}; }
4361:
4362: if (!$domain) { $domain=$env{'user.domain'}; }
4363: if (!$stuname) { $stuname=$env{'user.name'}; }
4364: if ($domain eq 'public' && $stuname eq 'public') {
4365: $stuname=$ENV{'REMOTE_ADDR'};
4366: }
4367: my %returnhash;
4368: $namespace=~s/\//\_/g;
4369: $namespace=~s/\W//g;
4370: my %hash;
4371: my $path=LONCAPA::tempdir();
4372: if (tie(%hash,'GDBM_File',
4373: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4374: &GDBM_READER(),0640)) {
4375: my $version=$hash{"version:$symb"};
4376: $returnhash{'version'}=$version;
4377: my $scope;
4378: for ($scope=1;$scope<=$version;$scope++) {
4379: my $vkeys=$hash{"$scope:keys:$symb"};
4380: my @keys=split(/:/,$vkeys);
4381: my $key;
4382: $returnhash{"$scope:keys"}=$vkeys;
4383: foreach $key (@keys) {
4384: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4385: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4386: }
4387: }
4388: if (!(untie(%hash))) {
4389: return "error:$!";
4390: }
4391: } else {
4392: return "error:$!";
4393: }
4394: return %returnhash;
4395: }
4396:
4397: # ----------------------------------------------------------------------- Store
4398:
4399: sub store {
4400: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4401: my $home='';
4402:
4403: if ($stuname) { $home=&homeserver($stuname,$domain); }
4404:
4405: $symb=&symbclean($symb);
4406: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4407:
4408: if (!$domain) { $domain=$env{'user.domain'}; }
4409: if (!$stuname) { $stuname=$env{'user.name'}; }
4410:
4411: &devalidate($symb,$stuname,$domain);
4412:
4413: $symb=escape($symb);
4414: if (!$namespace) {
4415: unless ($namespace=$env{'request.course.id'}) {
4416: return '';
4417: }
4418: }
4419: if (!$home) { $home=$env{'user.home'}; }
4420:
4421: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4422: $$storehash{'host'}=$perlvar{'lonHostID'};
4423:
4424: my $namevalue='';
4425: foreach my $key (keys(%$storehash)) {
4426: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4427: }
4428: $namevalue=~s/\&$//;
4429: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4430: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4431: }
4432:
4433: # -------------------------------------------------------------- Critical Store
4434:
4435: sub cstore {
4436: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4437: my $home='';
4438:
4439: if ($stuname) { $home=&homeserver($stuname,$domain); }
4440:
4441: $symb=&symbclean($symb);
4442: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4443:
4444: if (!$domain) { $domain=$env{'user.domain'}; }
4445: if (!$stuname) { $stuname=$env{'user.name'}; }
4446:
4447: &devalidate($symb,$stuname,$domain);
4448:
4449: $symb=escape($symb);
4450: if (!$namespace) {
4451: unless ($namespace=$env{'request.course.id'}) {
4452: return '';
4453: }
4454: }
4455: if (!$home) { $home=$env{'user.home'}; }
4456:
4457: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4458: $$storehash{'host'}=$perlvar{'lonHostID'};
4459:
4460: my $namevalue='';
4461: foreach my $key (keys(%$storehash)) {
4462: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4463: }
4464: $namevalue=~s/\&$//;
4465: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4466: return critical
4467: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4468: }
4469:
4470: # --------------------------------------------------------------------- Restore
4471:
4472: sub restore {
4473: my ($symb,$namespace,$domain,$stuname) = @_;
4474: my $home='';
4475:
4476: if ($stuname) { $home=&homeserver($stuname,$domain); }
4477:
4478: if (!$symb) {
4479: unless ($symb=escape(&symbread())) { return ''; }
4480: } else {
4481: $symb=&escape(&symbclean($symb));
4482: }
4483: if (!$namespace) {
4484: unless ($namespace=$env{'request.course.id'}) {
4485: return '';
4486: }
4487: }
4488: if (!$domain) { $domain=$env{'user.domain'}; }
4489: if (!$stuname) { $stuname=$env{'user.name'}; }
4490: if (!$home) { $home=$env{'user.home'}; }
4491: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4492:
4493: my %returnhash=();
4494: foreach my $line (split(/\&/,$answer)) {
4495: my ($name,$value)=split(/\=/,$line);
4496: $returnhash{&unescape($name)}=&thaw_unescape($value);
4497: }
4498: my $version;
4499: for ($version=1;$version<=$returnhash{'version'};$version++) {
4500: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4501: $returnhash{$item}=$returnhash{$version.':'.$item};
4502: }
4503: }
4504: return %returnhash;
4505: }
4506:
4507: # ---------------------------------------------------------- Course Description
4508: #
4509: #
4510:
4511: sub coursedescription {
4512: my ($courseid,$args)=@_;
4513: $courseid=~s/^\///;
4514: $courseid=~s/\_/\//g;
4515: my ($cdomain,$cnum)=split(/\//,$courseid);
4516: my $chome=&homeserver($cnum,$cdomain);
4517: my $normalid=$cdomain.'_'.$cnum;
4518: # need to always cache even if we get errors otherwise we keep
4519: # trying and trying and trying to get the course description.
4520: my %envhash=();
4521: my %returnhash=();
4522:
4523: my $expiretime=600;
4524: if ($env{'request.course.id'} eq $normalid) {
4525: $expiretime=120;
4526: }
4527:
4528: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4529: if (!$args->{'freshen_cache'}
4530: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4531: foreach my $key (keys(%env)) {
4532: next if ($key !~ /^\Q$prefix\E(.*)/);
4533: my ($setting) = $1;
4534: $returnhash{$setting} = $env{$key};
4535: }
4536: return %returnhash;
4537: }
4538:
4539: # get the data again
4540:
4541: if (!$args->{'one_time'}) {
4542: $envhash{'course.'.$normalid.'.last_cache'}=time;
4543: }
4544:
4545: if ($chome ne 'no_host') {
4546: %returnhash=&dump('environment',$cdomain,$cnum);
4547: if (!exists($returnhash{'con_lost'})) {
4548: my $username = $env{'user.name'}; # Defult username
4549: if(defined $args->{'user'}) {
4550: $username = $args->{'user'};
4551: }
4552: $returnhash{'home'}= $chome;
4553: $returnhash{'domain'} = $cdomain;
4554: $returnhash{'num'} = $cnum;
4555: if (!defined($returnhash{'type'})) {
4556: $returnhash{'type'} = 'Course';
4557: }
4558: while (my ($name,$value) = each %returnhash) {
4559: $envhash{'course.'.$normalid.'.'.$name}=$value;
4560: }
4561: $returnhash{'url'}=&clutter($returnhash{'url'});
4562: $returnhash{'fn'}=LONCAPA::tempdir() .
4563: $username.'_'.$cdomain.'_'.$cnum;
4564: $envhash{'course.'.$normalid.'.home'}=$chome;
4565: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4566: $envhash{'course.'.$normalid.'.num'}=$cnum;
4567: }
4568: }
4569: if (!$args->{'one_time'}) {
4570: &appenv(\%envhash);
4571: }
4572: return %returnhash;
4573: }
4574:
4575: sub update_released_required {
4576: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4577: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4578: $cid = $env{'request.course.id'};
4579: $cdom = $env{'course.'.$cid.'.domain'};
4580: $cnum = $env{'course.'.$cid.'.num'};
4581: $chome = $env{'course.'.$cid.'.home'};
4582: }
4583: if ($needsrelease) {
4584: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4585: my $needsupdate;
4586: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4587: $needsupdate = 1;
4588: } else {
4589: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4590: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4591: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4592: $needsupdate = 1;
4593: }
4594: }
4595: if ($needsupdate) {
4596: my %needshash = (
4597: 'internal.releaserequired' => $needsrelease,
4598: );
4599: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4600: if ($putresult eq 'ok') {
4601: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4602: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4603: if (ref($crsinfo{$cid}) eq 'HASH') {
4604: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4605: &courseidput($cdom,\%crsinfo,$chome,'notime');
4606: }
4607: }
4608: }
4609: }
4610: return;
4611: }
4612:
4613: # -------------------------------------------------See if a user is privileged
4614:
4615: sub privileged {
4616: my ($username,$domain)=@_;
4617: my $rolesdump=&reply("dump:$domain:$username:roles",
4618: &homeserver($username,$domain));
4619: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4620: ($rolesdump =~ /^error:/)) {
4621: return 0;
4622: }
4623: my $now=time;
4624: if ($rolesdump ne '') {
4625: foreach my $entry (split(/&/,$rolesdump)) {
4626: if ($entry!~/^rolesdef_/) {
4627: my ($area,$role)=split(/=/,$entry);
4628: $area=~s/\_\w\w$//;
4629: my ($trole,$tend,$tstart)=split(/_/,$role);
4630: if (($trole eq 'dc') || ($trole eq 'su')) {
4631: my $active=1;
4632: if ($tend) {
4633: if ($tend<$now) { $active=0; }
4634: }
4635: if ($tstart) {
4636: if ($tstart>$now) { $active=0; }
4637: }
4638: if ($active) { return 1; }
4639: }
4640: }
4641: }
4642: }
4643: return 0;
4644: }
4645:
4646: # -------------------------------------------------------- Get user privileges
4647:
4648: sub rolesinit {
4649: my ($domain,$username,$authhost)=@_;
4650: my $now=time;
4651: my %userroles = ('user.login.time' => $now);
4652: my $extra = &freeze_escape({'skipcheck' => 1});
4653: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4654: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4655: ($rolesdump =~ /^error:/)) {
4656: return \%userroles;
4657: }
4658: my %firstaccess = &dump('firstaccesstimes',$domain,$username);
4659: my %timerinterval = &dump('timerinterval',$domain,$username);
4660: my (%coursetimerstarts,%firstaccchk,%firstaccenv,
4661: %coursetimerintervals,%timerintchk,%timerintenv);
4662: foreach my $key (keys(%firstaccess)) {
4663: my ($cid,$rest) = split(/\0/,$key);
4664: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4665: }
4666: foreach my $key (keys(%timerinterval)) {
4667: my ($cid,$rest) = split(/\0/,$key);
4668: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4669: }
4670: my %allroles=();
4671: my %allgroups=();
4672:
4673: if ($rolesdump ne '') {
4674: foreach my $entry (split(/&/,$rolesdump)) {
4675: if ($entry!~/^rolesdef_/) {
4676: my ($area,$role)=split(/=/,$entry);
4677: $area=~s/\_\w\w$//;
4678: my ($trole,$tend,$tstart,$group_privs);
4679: if ($role=~/^cr/) {
4680: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4681: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4682: ($tend,$tstart)=split('_',$trest);
4683: } else {
4684: $trole=$role;
4685: }
4686: } elsif ($role =~ m|^gr/|) {
4687: ($trole,$tend,$tstart) = split(/_/,$role);
4688: next if ($tstart eq '-1');
4689: ($trole,$group_privs) = split(/\//,$trole);
4690: $group_privs = &unescape($group_privs);
4691: } else {
4692: ($trole,$tend,$tstart)=split(/_/,$role);
4693: }
4694: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4695: $username);
4696: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4697: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4698: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4699: if (($area ne '') && ($trole ne '')) {
4700: my $spec=$trole.'.'.$area;
4701: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4702: if ($trole =~ /^cr\//) {
4703: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4704: } elsif ($trole eq 'gr') {
4705: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4706: } else {
4707: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4708: }
4709: if ($trole ne 'gr') {
4710: my $cid = $tdomain.'_'.$trest;
4711: unless ($firstaccchk{$cid}) {
4712: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4713: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4714: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4715: $coursetimerstarts{$cid}{$item};
4716: }
4717: }
4718: $firstaccchk{$cid} = 1;
4719: }
4720: unless ($timerintchk{$cid}) {
4721: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
4722: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
4723: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
4724: $coursetimerintervals{$cid}{$item};
4725: }
4726: }
4727: $timerintchk{$cid} = 1;
4728: }
4729: }
4730: }
4731: }
4732: }
4733: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4734: $userroles{'user.adv'} = $adv;
4735: $userroles{'user.author'} = $author;
4736: $env{'user.adv'}=$adv;
4737: }
4738: return (\%userroles,\%firstaccenv,\%timerintenv);
4739: }
4740:
4741: sub set_arearole {
4742: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4743: # log the associated role with the area
4744: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4745: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4746: }
4747:
4748: sub custom_roleprivs {
4749: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4750: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4751: my $homsvr=homeserver($rauthor,$rdomain);
4752: if (&hostname($homsvr) ne '') {
4753: my ($rdummy,$roledef)=
4754: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4755: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4756: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4757: if (defined($syspriv)) {
4758: if ($trest =~ /^$match_community$/) {
4759: $syspriv =~ s/bre\&S//;
4760: }
4761: $$allroles{'cm./'}.=':'.$syspriv;
4762: $$allroles{$spec.'./'}.=':'.$syspriv;
4763: }
4764: if ($tdomain ne '') {
4765: if (defined($dompriv)) {
4766: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4767: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4768: }
4769: if (($trest ne '') && (defined($coursepriv))) {
4770: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4771: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4772: }
4773: }
4774: }
4775: }
4776: }
4777:
4778: sub group_roleprivs {
4779: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4780: my $access = 1;
4781: my $now = time;
4782: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4783: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4784: if ($access) {
4785: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4786: $$allgroups{$course}{$group} .=':'.$group_privs;
4787: }
4788: }
4789:
4790: sub standard_roleprivs {
4791: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4792: if (defined($pr{$trole.':s'})) {
4793: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4794: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4795: }
4796: if ($tdomain ne '') {
4797: if (defined($pr{$trole.':d'})) {
4798: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4799: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4800: }
4801: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4802: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4803: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4804: }
4805: }
4806: }
4807:
4808: sub set_userprivs {
4809: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4810: my $author=0;
4811: my $adv=0;
4812: my %grouproles = ();
4813: if (keys(%{$allgroups}) > 0) {
4814: my @groupkeys;
4815: foreach my $role (keys(%{$allroles})) {
4816: push(@groupkeys,$role);
4817: }
4818: if (ref($groups_roles) eq 'HASH') {
4819: foreach my $key (keys(%{$groups_roles})) {
4820: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4821: push(@groupkeys,$key);
4822: }
4823: }
4824: }
4825: if (@groupkeys > 0) {
4826: foreach my $role (@groupkeys) {
4827: my ($trole,$area,$sec,$extendedarea);
4828: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4829: $trole = $1;
4830: $area = $2;
4831: $sec = $3;
4832: $extendedarea = $area.$sec;
4833: if (exists($$allgroups{$area})) {
4834: foreach my $group (keys(%{$$allgroups{$area}})) {
4835: my $spec = $trole.'.'.$extendedarea;
4836: $grouproles{$spec.'.'.$area.'/'.$group} =
4837: $$allgroups{$area}{$group};
4838: }
4839: }
4840: }
4841: }
4842: }
4843: }
4844: foreach my $group (keys(%grouproles)) {
4845: $$allroles{$group} = $grouproles{$group};
4846: }
4847: foreach my $role (keys(%{$allroles})) {
4848: my %thesepriv;
4849: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4850: foreach my $item (split(/:/,$$allroles{$role})) {
4851: if ($item ne '') {
4852: my ($privilege,$restrictions)=split(/&/,$item);
4853: if ($restrictions eq '') {
4854: $thesepriv{$privilege}='F';
4855: } elsif ($thesepriv{$privilege} ne 'F') {
4856: $thesepriv{$privilege}.=$restrictions;
4857: }
4858: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4859: }
4860: }
4861: my $thesestr='';
4862: foreach my $priv (sort(keys(%thesepriv))) {
4863: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4864: }
4865: $userroles->{'user.priv.'.$role} = $thesestr;
4866: }
4867: return ($author,$adv);
4868: }
4869:
4870: sub role_status {
4871: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4872: my @pwhere = ();
4873: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4874: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4875: unless (!defined($$role) || $$role eq '') {
4876: $$where=join('.',@pwhere);
4877: $$trolecode=$$role.'.'.$$where;
4878: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4879: $$tstatus='is';
4880: if ($$tstart && $$tstart>$update) {
4881: $$tstatus='future';
4882: if ($$tstart<$now) {
4883: if ($$tstart && $$tstart>$refresh) {
4884: if (($$where ne '') && ($$role ne '')) {
4885: my (%allroles,%allgroups,$group_privs,
4886: %groups_roles,@rolecodes);
4887: my %userroles = (
4888: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4889: );
4890: @rolecodes = ('cm');
4891: my $spec=$$role.'.'.$$where;
4892: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4893: if ($$role =~ /^cr\//) {
4894: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4895: push(@rolecodes,'cr');
4896: } elsif ($$role eq 'gr') {
4897: push(@rolecodes,$$role);
4898: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4899: $env{'user.name'});
4900: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4901: (undef,my $group_privs) = split(/\//,$trole);
4902: $group_privs = &unescape($group_privs);
4903: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4904: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4905: &get_groups_roles($tdomain,$trest,
4906: \%course_roles,\@rolecodes,
4907: \%groups_roles);
4908: } else {
4909: push(@rolecodes,$$role);
4910: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4911: }
4912: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4913: &appenv(\%userroles,\@rolecodes);
4914: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4915: }
4916: }
4917: $$tstatus = 'is';
4918: }
4919: }
4920: if ($$tend) {
4921: if ($$tend<$update) {
4922: $$tstatus='expired';
4923: } elsif ($$tend<$now) {
4924: $$tstatus='will_not';
4925: }
4926: }
4927: }
4928: }
4929: }
4930:
4931: sub get_groups_roles {
4932: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4933: return unless((ref($cdom_courseroles) eq 'HASH') &&
4934: (ref($rolecodes) eq 'ARRAY') &&
4935: (ref($groups_roles) eq 'HASH'));
4936: if (keys(%{$cdom_courseroles}) > 0) {
4937: my ($cnum) = ($rest =~ /^($match_courseid)/);
4938: if ($cdom ne '' && $cnum ne '') {
4939: foreach my $key (keys(%{$cdom_courseroles})) {
4940: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4941: my $crsrole = $1;
4942: my $crssec = $2;
4943: if ($crsrole =~ /^cr/) {
4944: unless (grep(/^cr$/,@{$rolecodes})) {
4945: push(@{$rolecodes},'cr');
4946: }
4947: } else {
4948: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4949: push(@{$rolecodes},$crsrole);
4950: }
4951: }
4952: my $rolekey = "$crsrole./$cdom/$cnum";
4953: if ($crssec ne '') {
4954: $rolekey .= "/$crssec";
4955: }
4956: $rolekey .= './';
4957: $groups_roles->{$rolekey} = $rolecodes;
4958: }
4959: }
4960: }
4961: }
4962: return;
4963: }
4964:
4965: sub delete_env_groupprivs {
4966: my ($where,$courseroles,$possroles) = @_;
4967: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4968: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4969: unless (ref($courseroles->{$udom}) eq 'HASH') {
4970: %{$courseroles->{$udom}} =
4971: &get_my_roles('','','userroles',['active'],
4972: $possroles,[$udom],1);
4973: }
4974: if (ref($courseroles->{$udom}) eq 'HASH') {
4975: foreach my $item (keys(%{$courseroles->{$udom}})) {
4976: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4977: my $area = '/'.$cdom.'/'.$cnum;
4978: my $privkey = "user.priv.$crsrole.$area";
4979: if ($crssec ne '') {
4980: $privkey .= '/'.$crssec;
4981: }
4982: $privkey .= ".$area/$group";
4983: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
4984: }
4985: }
4986: return;
4987: }
4988:
4989: sub check_adhoc_privs {
4990: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
4991: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4992: if ($env{$cckey}) {
4993: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4994: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4995: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4996: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4997: }
4998: } else {
4999: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5000: }
5001: }
5002:
5003: sub set_adhoc_privileges {
5004: # role can be cc or ca
5005: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5006: my $area = '/'.$dcdom.'/'.$pickedcourse;
5007: my $spec = $role.'.'.$area;
5008: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5009: $env{'user.name'});
5010: my %ccrole = ();
5011: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5012: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5013: &appenv(\%userroles,[$role,'cm']);
5014: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5015: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5016: &appenv( {'request.role' => $spec,
5017: 'request.role.domain' => $dcdom,
5018: 'request.course.sec' => ''
5019: }
5020: );
5021: my $tadv=0;
5022: if (&allowed('adv') eq 'F') { $tadv=1; }
5023: &appenv({'request.role.adv' => $tadv});
5024: }
5025: }
5026:
5027: # --------------------------------------------------------------- get interface
5028:
5029: sub get {
5030: my ($namespace,$storearr,$udomain,$uname)=@_;
5031: my $items='';
5032: foreach my $item (@$storearr) {
5033: $items.=&escape($item).'&';
5034: }
5035: $items=~s/\&$//;
5036: if (!$udomain) { $udomain=$env{'user.domain'}; }
5037: if (!$uname) { $uname=$env{'user.name'}; }
5038: my $uhome=&homeserver($uname,$udomain);
5039:
5040: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5041: my @pairs=split(/\&/,$rep);
5042: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5043: return @pairs;
5044: }
5045: my %returnhash=();
5046: my $i=0;
5047: foreach my $item (@$storearr) {
5048: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5049: $i++;
5050: }
5051: return %returnhash;
5052: }
5053:
5054: # --------------------------------------------------------------- del interface
5055:
5056: sub del {
5057: my ($namespace,$storearr,$udomain,$uname)=@_;
5058: my $items='';
5059: foreach my $item (@$storearr) {
5060: $items.=&escape($item).'&';
5061: }
5062:
5063: $items=~s/\&$//;
5064: if (!$udomain) { $udomain=$env{'user.domain'}; }
5065: if (!$uname) { $uname=$env{'user.name'}; }
5066: my $uhome=&homeserver($uname,$udomain);
5067: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5068: }
5069:
5070: # -------------------------------------------------------------- dump interface
5071:
5072: sub dump {
5073: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
5074: if (!$udomain) { $udomain=$env{'user.domain'}; }
5075: if (!$uname) { $uname=$env{'user.name'}; }
5076: my $uhome=&homeserver($uname,$udomain);
5077: if ($regexp) {
5078: $regexp=&escape($regexp);
5079: } else {
5080: $regexp='.';
5081: }
5082: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
5083: my @pairs=split(/\&/,$rep);
5084: my %returnhash=();
5085: if (!($rep =~ /^error/ )) {
5086: foreach my $item (@pairs) {
5087: my ($key,$value)=split(/=/,$item,2);
5088: $key = &unescape($key);
5089: next if ($key =~ /^error: 2 /);
5090: $returnhash{$key}=&thaw_unescape($value);
5091: }
5092: }
5093: return %returnhash;
5094: }
5095:
5096:
5097: # --------------------------------------------------------- dumpstore interface
5098:
5099: sub dumpstore {
5100: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5101: if (!$udomain) { $udomain=$env{'user.domain'}; }
5102: if (!$uname) { $uname=$env{'user.name'}; }
5103: my $uhome=&homeserver($uname,$udomain);
5104: if ($regexp) {
5105: $regexp=&escape($regexp);
5106: } else {
5107: $regexp='.';
5108: }
5109: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5110: my @pairs=split(/\&/,$rep);
5111: my %returnhash=();
5112: foreach my $item (@pairs) {
5113: my ($key,$value)=split(/=/,$item,2);
5114: next if ($key =~ /^error: 2 /);
5115: $returnhash{$key}=&thaw_unescape($value);
5116: }
5117: return %returnhash;
5118: }
5119:
5120: # -------------------------------------------------------------- keys interface
5121:
5122: sub getkeys {
5123: my ($namespace,$udomain,$uname)=@_;
5124: if (!$udomain) { $udomain=$env{'user.domain'}; }
5125: if (!$uname) { $uname=$env{'user.name'}; }
5126: my $uhome=&homeserver($uname,$udomain);
5127: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5128: my @keyarray=();
5129: foreach my $key (split(/\&/,$rep)) {
5130: next if ($key =~ /^error: 2 /);
5131: push(@keyarray,&unescape($key));
5132: }
5133: return @keyarray;
5134: }
5135:
5136: # --------------------------------------------------------------- currentdump
5137: sub currentdump {
5138: my ($courseid,$sdom,$sname)=@_;
5139: $courseid = $env{'request.course.id'} if (! defined($courseid));
5140: $sdom = $env{'user.domain'} if (! defined($sdom));
5141: $sname = $env{'user.name'} if (! defined($sname));
5142: my $uhome = &homeserver($sname,$sdom);
5143: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5144: return if ($rep =~ /^(error:|no_such_host)/);
5145: #
5146: my %returnhash=();
5147: #
5148: if ($rep eq "unknown_cmd") {
5149: # an old lond will not know currentdump
5150: # Do a dump and make it look like a currentdump
5151: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5152: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5153: my %hash = @tmp;
5154: @tmp=();
5155: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5156: } else {
5157: my @pairs=split(/\&/,$rep);
5158: foreach my $pair (@pairs) {
5159: my ($key,$value)=split(/=/,$pair,2);
5160: my ($symb,$param) = split(/:/,$key);
5161: $returnhash{&unescape($symb)}->{&unescape($param)} =
5162: &thaw_unescape($value);
5163: }
5164: }
5165: return %returnhash;
5166: }
5167:
5168: sub convert_dump_to_currentdump{
5169: my %hash = %{shift()};
5170: my %returnhash;
5171: # Code ripped from lond, essentially. The only difference
5172: # here is the unescaping done by lonnet::dump(). Conceivably
5173: # we might run in to problems with parameter names =~ /^v\./
5174: while (my ($key,$value) = each(%hash)) {
5175: my ($v,$symb,$param) = split(/:/,$key);
5176: $symb = &unescape($symb);
5177: $param = &unescape($param);
5178: next if ($v eq 'version' || $symb eq 'keys');
5179: next if (exists($returnhash{$symb}) &&
5180: exists($returnhash{$symb}->{$param}) &&
5181: $returnhash{$symb}->{'v.'.$param} > $v);
5182: $returnhash{$symb}->{$param}=$value;
5183: $returnhash{$symb}->{'v.'.$param}=$v;
5184: }
5185: #
5186: # Remove all of the keys in the hashes which keep track of
5187: # the version of the parameter.
5188: while (my ($symb,$param_hash) = each(%returnhash)) {
5189: # use a foreach because we are going to delete from the hash.
5190: foreach my $key (keys(%$param_hash)) {
5191: delete($param_hash->{$key}) if ($key =~ /^v\./);
5192: }
5193: }
5194: return \%returnhash;
5195: }
5196:
5197: # ------------------------------------------------------ critical inc interface
5198:
5199: sub cinc {
5200: return &inc(@_,'critical');
5201: }
5202:
5203: # --------------------------------------------------------------- inc interface
5204:
5205: sub inc {
5206: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5207: if (!$udomain) { $udomain=$env{'user.domain'}; }
5208: if (!$uname) { $uname=$env{'user.name'}; }
5209: my $uhome=&homeserver($uname,$udomain);
5210: my $items='';
5211: if (! ref($store)) {
5212: # got a single value, so use that instead
5213: $items = &escape($store).'=&';
5214: } elsif (ref($store) eq 'SCALAR') {
5215: $items = &escape($$store).'=&';
5216: } elsif (ref($store) eq 'ARRAY') {
5217: $items = join('=&',map {&escape($_);} @{$store});
5218: } elsif (ref($store) eq 'HASH') {
5219: while (my($key,$value) = each(%{$store})) {
5220: $items.= &escape($key).'='.&escape($value).'&';
5221: }
5222: }
5223: $items=~s/\&$//;
5224: if ($critical) {
5225: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5226: } else {
5227: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5228: }
5229: }
5230:
5231: # --------------------------------------------------------------- put interface
5232:
5233: sub put {
5234: my ($namespace,$storehash,$udomain,$uname)=@_;
5235: if (!$udomain) { $udomain=$env{'user.domain'}; }
5236: if (!$uname) { $uname=$env{'user.name'}; }
5237: my $uhome=&homeserver($uname,$udomain);
5238: my $items='';
5239: foreach my $item (keys(%$storehash)) {
5240: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5241: }
5242: $items=~s/\&$//;
5243: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5244: }
5245:
5246: # ------------------------------------------------------------ newput interface
5247:
5248: sub newput {
5249: my ($namespace,$storehash,$udomain,$uname)=@_;
5250: if (!$udomain) { $udomain=$env{'user.domain'}; }
5251: if (!$uname) { $uname=$env{'user.name'}; }
5252: my $uhome=&homeserver($uname,$udomain);
5253: my $items='';
5254: foreach my $key (keys(%$storehash)) {
5255: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5256: }
5257: $items=~s/\&$//;
5258: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5259: }
5260:
5261: # --------------------------------------------------------- putstore interface
5262:
5263: sub putstore {
5264: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5265: if (!$udomain) { $udomain=$env{'user.domain'}; }
5266: if (!$uname) { $uname=$env{'user.name'}; }
5267: my $uhome=&homeserver($uname,$udomain);
5268: my $items='';
5269: foreach my $key (keys(%$storehash)) {
5270: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5271: }
5272: $items=~s/\&$//;
5273: my $esc_symb=&escape($symb);
5274: my $esc_v=&escape($version);
5275: my $reply =
5276: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5277: $uhome);
5278: if ($reply eq 'unknown_cmd') {
5279: # gfall back to way things use to be done
5280: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5281: $uname);
5282: }
5283: return $reply;
5284: }
5285:
5286: sub old_putstore {
5287: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5288: if (!$udomain) { $udomain=$env{'user.domain'}; }
5289: if (!$uname) { $uname=$env{'user.name'}; }
5290: my $uhome=&homeserver($uname,$udomain);
5291: my %newstorehash;
5292: foreach my $item (keys(%$storehash)) {
5293: my $key = $version.':'.&escape($symb).':'.$item;
5294: $newstorehash{$key} = $storehash->{$item};
5295: }
5296: my $items='';
5297: my %allitems = ();
5298: foreach my $item (keys(%newstorehash)) {
5299: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5300: my $key = $1.':keys:'.$2;
5301: $allitems{$key} .= $3.':';
5302: }
5303: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5304: }
5305: foreach my $item (keys(%allitems)) {
5306: $allitems{$item} =~ s/\:$//;
5307: $items.= $item.'='.$allitems{$item}.'&';
5308: }
5309: $items=~s/\&$//;
5310: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5311: }
5312:
5313: # ------------------------------------------------------ critical put interface
5314:
5315: sub cput {
5316: my ($namespace,$storehash,$udomain,$uname)=@_;
5317: if (!$udomain) { $udomain=$env{'user.domain'}; }
5318: if (!$uname) { $uname=$env{'user.name'}; }
5319: my $uhome=&homeserver($uname,$udomain);
5320: my $items='';
5321: foreach my $item (keys(%$storehash)) {
5322: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5323: }
5324: $items=~s/\&$//;
5325: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5326: }
5327:
5328: # -------------------------------------------------------------- eget interface
5329:
5330: sub eget {
5331: my ($namespace,$storearr,$udomain,$uname)=@_;
5332: my $items='';
5333: foreach my $item (@$storearr) {
5334: $items.=&escape($item).'&';
5335: }
5336: $items=~s/\&$//;
5337: if (!$udomain) { $udomain=$env{'user.domain'}; }
5338: if (!$uname) { $uname=$env{'user.name'}; }
5339: my $uhome=&homeserver($uname,$udomain);
5340: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5341: my @pairs=split(/\&/,$rep);
5342: my %returnhash=();
5343: my $i=0;
5344: foreach my $item (@$storearr) {
5345: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5346: $i++;
5347: }
5348: return %returnhash;
5349: }
5350:
5351: # ------------------------------------------------------------ tmpput interface
5352: sub tmpput {
5353: my ($storehash,$server,$context)=@_;
5354: my $items='';
5355: foreach my $item (keys(%$storehash)) {
5356: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5357: }
5358: $items=~s/\&$//;
5359: if (defined($context)) {
5360: $items .= ':'.&escape($context);
5361: }
5362: return &reply("tmpput:$items",$server);
5363: }
5364:
5365: # ------------------------------------------------------------ tmpget interface
5366: sub tmpget {
5367: my ($token,$server)=@_;
5368: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5369: my $rep=&reply("tmpget:$token",$server);
5370: my %returnhash;
5371: foreach my $item (split(/\&/,$rep)) {
5372: my ($key,$value)=split(/=/,$item);
5373: next if ($key =~ /^error: 2 /);
5374: $returnhash{&unescape($key)}=&thaw_unescape($value);
5375: }
5376: return %returnhash;
5377: }
5378:
5379: # ------------------------------------------------------------ tmpdel interface
5380: sub tmpdel {
5381: my ($token,$server)=@_;
5382: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5383: return &reply("tmpdel:$token",$server);
5384: }
5385:
5386: # -------------------------------------------------- portfolio access checking
5387:
5388: sub portfolio_access {
5389: my ($requrl) = @_;
5390: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5391: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5392: if ($result) {
5393: my %setters;
5394: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5395: my ($startblock,$endblock) =
5396: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5397: if ($startblock && $endblock) {
5398: return 'B';
5399: }
5400: } else {
5401: my ($startblock,$endblock) =
5402: &Apache::loncommon::blockcheck(\%setters,'port');
5403: if ($startblock && $endblock) {
5404: return 'B';
5405: }
5406: }
5407: }
5408: if ($result eq 'ok') {
5409: return 'F';
5410: } elsif ($result =~ /^[^:]+:guest_/) {
5411: return 'A';
5412: }
5413: return '';
5414: }
5415:
5416: sub get_portfolio_access {
5417: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5418:
5419: if (!ref($access_hash)) {
5420: my $current_perms = &get_portfile_permissions($udom,$unum);
5421: my %access_controls = &get_access_controls($current_perms,$group,
5422: $file_name);
5423: $access_hash = $access_controls{$file_name};
5424: }
5425:
5426: my ($public,$guest,@domains,@users,@courses,@groups);
5427: my $now = time;
5428: if (ref($access_hash) eq 'HASH') {
5429: foreach my $key (keys(%{$access_hash})) {
5430: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5431: if ($start > $now) {
5432: next;
5433: }
5434: if ($end && $end<$now) {
5435: next;
5436: }
5437: if ($scope eq 'public') {
5438: $public = $key;
5439: last;
5440: } elsif ($scope eq 'guest') {
5441: $guest = $key;
5442: } elsif ($scope eq 'domains') {
5443: push(@domains,$key);
5444: } elsif ($scope eq 'users') {
5445: push(@users,$key);
5446: } elsif ($scope eq 'course') {
5447: push(@courses,$key);
5448: } elsif ($scope eq 'group') {
5449: push(@groups,$key);
5450: }
5451: }
5452: if ($public) {
5453: return 'ok';
5454: }
5455: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5456: if ($guest) {
5457: return $guest;
5458: }
5459: } else {
5460: if (@domains > 0) {
5461: foreach my $domkey (@domains) {
5462: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5463: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5464: return 'ok';
5465: }
5466: }
5467: }
5468: }
5469: if (@users > 0) {
5470: foreach my $userkey (@users) {
5471: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5472: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5473: if (ref($item) eq 'HASH') {
5474: if (($item->{'uname'} eq $env{'user.name'}) &&
5475: ($item->{'udom'} eq $env{'user.domain'})) {
5476: return 'ok';
5477: }
5478: }
5479: }
5480: }
5481: }
5482: }
5483: my %roleshash;
5484: my @courses_and_groups = @courses;
5485: push(@courses_and_groups,@groups);
5486: if (@courses_and_groups > 0) {
5487: my (%allgroups,%allroles);
5488: my ($start,$end,$role,$sec,$group);
5489: foreach my $envkey (%env) {
5490: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5491: my $cid = $2.'_'.$3;
5492: if ($1 eq 'gr') {
5493: $group = $4;
5494: $allgroups{$cid}{$group} = $env{$envkey};
5495: } else {
5496: if ($4 eq '') {
5497: $sec = 'none';
5498: } else {
5499: $sec = $4;
5500: }
5501: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5502: }
5503: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5504: my $cid = $2.'_'.$3;
5505: if ($4 eq '') {
5506: $sec = 'none';
5507: } else {
5508: $sec = $4;
5509: }
5510: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5511: }
5512: }
5513: if (keys(%allroles) == 0) {
5514: return;
5515: }
5516: foreach my $key (@courses_and_groups) {
5517: my %content = %{$$access_hash{$key}};
5518: my $cnum = $content{'number'};
5519: my $cdom = $content{'domain'};
5520: my $cid = $cdom.'_'.$cnum;
5521: if (!exists($allroles{$cid})) {
5522: next;
5523: }
5524: foreach my $role_id (keys(%{$content{'roles'}})) {
5525: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5526: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5527: my @status = @{$content{'roles'}{$role_id}{'access'}};
5528: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5529: foreach my $role (keys(%{$allroles{$cid}})) {
5530: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5531: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5532: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5533: if (grep/^all$/,@sections) {
5534: return 'ok';
5535: } else {
5536: if (grep/^$sec$/,@sections) {
5537: return 'ok';
5538: }
5539: }
5540: }
5541: }
5542: if (keys(%{$allgroups{$cid}}) == 0) {
5543: if (grep/^none$/,@groups) {
5544: return 'ok';
5545: }
5546: } else {
5547: if (grep/^all$/,@groups) {
5548: return 'ok';
5549: }
5550: foreach my $group (keys(%{$allgroups{$cid}})) {
5551: if (grep/^$group$/,@groups) {
5552: return 'ok';
5553: }
5554: }
5555: }
5556: }
5557: }
5558: }
5559: }
5560: }
5561: if ($guest) {
5562: return $guest;
5563: }
5564: }
5565: }
5566: return;
5567: }
5568:
5569: sub course_group_datechecker {
5570: my ($dates,$now,$status) = @_;
5571: my ($start,$end) = split(/\./,$dates);
5572: if (!$start && !$end) {
5573: return 'ok';
5574: }
5575: if (grep/^active$/,@{$status}) {
5576: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5577: return 'ok';
5578: }
5579: }
5580: if (grep/^previous$/,@{$status}) {
5581: if ($end > $now ) {
5582: return 'ok';
5583: }
5584: }
5585: if (grep/^future$/,@{$status}) {
5586: if ($start > $now) {
5587: return 'ok';
5588: }
5589: }
5590: return;
5591: }
5592:
5593: sub parse_portfolio_url {
5594: my ($url) = @_;
5595:
5596: my ($type,$udom,$unum,$group,$file_name);
5597:
5598: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5599: $type = 1;
5600: $udom = $1;
5601: $unum = $2;
5602: $file_name = $3;
5603: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5604: $type = 2;
5605: $udom = $1;
5606: $unum = $2;
5607: $group = $3;
5608: $file_name = $3.'/'.$4;
5609: }
5610: if (wantarray) {
5611: return ($type,$udom,$unum,$file_name,$group);
5612: }
5613: return $type;
5614: }
5615:
5616: sub is_portfolio_url {
5617: my ($url) = @_;
5618: return scalar(&parse_portfolio_url($url));
5619: }
5620:
5621: sub is_portfolio_file {
5622: my ($file) = @_;
5623: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5624: return 1;
5625: }
5626: return;
5627: }
5628:
5629: sub usertools_access {
5630: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5631: my ($access,%tools);
5632: if ($context eq '') {
5633: $context = 'tools';
5634: }
5635: if ($context eq 'requestcourses') {
5636: %tools = (
5637: official => 1,
5638: unofficial => 1,
5639: community => 1,
5640: );
5641: } else {
5642: %tools = (
5643: aboutme => 1,
5644: blog => 1,
5645: portfolio => 1,
5646: );
5647: }
5648: return if (!defined($tools{$tool}));
5649:
5650: if ((!defined($udom)) || (!defined($uname))) {
5651: $udom = $env{'user.domain'};
5652: $uname = $env{'user.name'};
5653: }
5654:
5655: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5656: if ($action ne 'reload') {
5657: if ($context eq 'requestcourses') {
5658: return $env{'environment.canrequest.'.$tool};
5659: } else {
5660: return $env{'environment.availabletools.'.$tool};
5661: }
5662: }
5663: }
5664:
5665: my ($toolstatus,$inststatus);
5666:
5667: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5668: ($action ne 'reload')) {
5669: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5670: $inststatus = $env{'environment.inststatus'};
5671: } else {
5672: if (ref($userenvref) eq 'HASH') {
5673: $toolstatus = $userenvref->{$context.'.'.$tool};
5674: $inststatus = $userenvref->{'inststatus'};
5675: } else {
5676: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5677: $toolstatus = $userenv{$context.'.'.$tool};
5678: $inststatus = $userenv{'inststatus'};
5679: }
5680: }
5681:
5682: if ($toolstatus ne '') {
5683: if ($toolstatus) {
5684: $access = 1;
5685: } else {
5686: $access = 0;
5687: }
5688: return $access;
5689: }
5690:
5691: my ($is_adv,%domdef);
5692: if (ref($is_advref) eq 'HASH') {
5693: $is_adv = $is_advref->{'is_adv'};
5694: } else {
5695: $is_adv = &is_advanced_user($udom,$uname);
5696: }
5697: if (ref($domdefref) eq 'HASH') {
5698: %domdef = %{$domdefref};
5699: } else {
5700: %domdef = &get_domain_defaults($udom);
5701: }
5702: if (ref($domdef{$tool}) eq 'HASH') {
5703: if ($is_adv) {
5704: if ($domdef{$tool}{'_LC_adv'} ne '') {
5705: if ($domdef{$tool}{'_LC_adv'}) {
5706: $access = 1;
5707: } else {
5708: $access = 0;
5709: }
5710: return $access;
5711: }
5712: }
5713: if ($inststatus ne '') {
5714: my ($hasaccess,$hasnoaccess);
5715: foreach my $affiliation (split(/:/,$inststatus)) {
5716: if ($domdef{$tool}{$affiliation} ne '') {
5717: if ($domdef{$tool}{$affiliation}) {
5718: $hasaccess = 1;
5719: } else {
5720: $hasnoaccess = 1;
5721: }
5722: }
5723: }
5724: if ($hasaccess || $hasnoaccess) {
5725: if ($hasaccess) {
5726: $access = 1;
5727: } elsif ($hasnoaccess) {
5728: $access = 0;
5729: }
5730: return $access;
5731: }
5732: } else {
5733: if ($domdef{$tool}{'default'} ne '') {
5734: if ($domdef{$tool}{'default'}) {
5735: $access = 1;
5736: } elsif ($domdef{$tool}{'default'} == 0) {
5737: $access = 0;
5738: }
5739: return $access;
5740: }
5741: }
5742: } else {
5743: if ($context eq 'tools') {
5744: $access = 1;
5745: } else {
5746: $access = 0;
5747: }
5748: return $access;
5749: }
5750: }
5751:
5752: sub is_course_owner {
5753: my ($cdom,$cnum,$udom,$uname) = @_;
5754: if (($udom eq '') || ($uname eq '')) {
5755: $udom = $env{'user.domain'};
5756: $uname = $env{'user.name'};
5757: }
5758: unless (($udom eq '') || ($uname eq '')) {
5759: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5760: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5761: return 1;
5762: } else {
5763: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5764: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5765: return 1;
5766: }
5767: }
5768: }
5769: }
5770: return;
5771: }
5772:
5773: sub is_advanced_user {
5774: my ($udom,$uname) = @_;
5775: if ($udom ne '' && $uname ne '') {
5776: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5777: if (wantarray) {
5778: return ($env{'user.adv'},$env{'user.author'});
5779: } else {
5780: return $env{'user.adv'};
5781: }
5782: }
5783: }
5784: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5785: my %allroles;
5786: my ($is_adv,$is_author);
5787: foreach my $role (keys(%roleshash)) {
5788: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5789: my $area = '/'.$tdomain.'/'.$trest;
5790: if ($sec ne '') {
5791: $area .= '/'.$sec;
5792: }
5793: if (($area ne '') && ($trole ne '')) {
5794: my $spec=$trole.'.'.$area;
5795: if ($trole =~ /^cr\//) {
5796: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5797: } elsif ($trole ne 'gr') {
5798: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5799: }
5800: if ($trole eq 'au') {
5801: $is_author = 1;
5802: }
5803: }
5804: }
5805: foreach my $role (keys(%allroles)) {
5806: last if ($is_adv);
5807: foreach my $item (split(/:/,$allroles{$role})) {
5808: if ($item ne '') {
5809: my ($privilege,$restrictions)=split(/&/,$item);
5810: if ($privilege eq 'adv') {
5811: $is_adv = 1;
5812: last;
5813: }
5814: }
5815: }
5816: }
5817: if (wantarray) {
5818: return ($is_adv,$is_author);
5819: }
5820: return $is_adv;
5821: }
5822:
5823: sub check_can_request {
5824: my ($dom,$can_request,$request_domains) = @_;
5825: my $canreq = 0;
5826: my ($types,$typename) = &Apache::loncommon::course_types();
5827: my @options = ('approval','validate','autolimit');
5828: my $optregex = join('|',@options);
5829: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5830: foreach my $type (@{$types}) {
5831: if (&usertools_access($env{'user.name'},
5832: $env{'user.domain'},
5833: $type,undef,'requestcourses')) {
5834: $canreq ++;
5835: if (ref($request_domains) eq 'HASH') {
5836: push(@{$request_domains->{$type}},$env{'user.domain'});
5837: }
5838: if ($dom eq $env{'user.domain'}) {
5839: $can_request->{$type} = 1;
5840: }
5841: }
5842: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5843: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5844: if (@curr > 0) {
5845: foreach my $item (@curr) {
5846: if (ref($request_domains) eq 'HASH') {
5847: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5848: if ($otherdom ne '') {
5849: if (ref($request_domains->{$type}) eq 'ARRAY') {
5850: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5851: push(@{$request_domains->{$type}},$otherdom);
5852: }
5853: } else {
5854: push(@{$request_domains->{$type}},$otherdom);
5855: }
5856: }
5857: }
5858: }
5859: unless($dom eq $env{'user.domain'}) {
5860: $canreq ++;
5861: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5862: $can_request->{$type} = 1;
5863: }
5864: }
5865: }
5866: }
5867: }
5868: }
5869: return $canreq;
5870: }
5871:
5872: # ---------------------------------------------- Custom access rule evaluation
5873:
5874: sub customaccess {
5875: my ($priv,$uri)=@_;
5876: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5877: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5878: $udom = &LONCAPA::clean_domain($udom);
5879: $ucrs = &LONCAPA::clean_username($ucrs);
5880: my $access=0;
5881: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5882: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5883: if ($type eq 'user') {
5884: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5885: my ($tdom,$tuname)=split(m{/},$scope);
5886: if ($tdom) {
5887: if ($tdom ne $env{'user.domain'}) { next; }
5888: }
5889: if ($tuname) {
5890: if ($tuname ne $env{'user.name'}) { next; }
5891: }
5892: $access=($effect eq 'allow');
5893: last;
5894: }
5895: } else {
5896: if ($role) {
5897: if ($role ne $urole) { next; }
5898: }
5899: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5900: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5901: if ($tdom) {
5902: if ($tdom ne $udom) { next; }
5903: }
5904: if ($tcrs) {
5905: if ($tcrs ne $ucrs) { next; }
5906: }
5907: if ($tsec) {
5908: if ($tsec ne $usec) { next; }
5909: }
5910: $access=($effect eq 'allow');
5911: last;
5912: }
5913: if ($realm eq '' && $role eq '') {
5914: $access=($effect eq 'allow');
5915: }
5916: }
5917: }
5918: return $access;
5919: }
5920:
5921: # ------------------------------------------------- Check for a user privilege
5922:
5923: sub allowed {
5924: my ($priv,$uri,$symb,$role)=@_;
5925: my $ver_orguri=$uri;
5926: $uri=&deversion($uri);
5927: my $orguri=$uri;
5928: $uri=&declutter($uri);
5929:
5930: if ($priv eq 'evb') {
5931: # Evade communication block restrictions for specified role in a course
5932: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5933: return $1;
5934: } else {
5935: return;
5936: }
5937: }
5938:
5939: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5940: # Free bre access to adm and meta resources
5941: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5942: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5943: && ($priv eq 'bre')) {
5944: return 'F';
5945: }
5946:
5947: # Free bre access to user's own portfolio contents
5948: my ($space,$domain,$name,@dir)=split('/',$uri);
5949: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5950: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5951: my %setters;
5952: my ($startblock,$endblock) =
5953: &Apache::loncommon::blockcheck(\%setters,'port');
5954: if ($startblock && $endblock) {
5955: return 'B';
5956: } else {
5957: return 'F';
5958: }
5959: }
5960:
5961: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5962: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5963: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5964: if (exists($env{'request.course.id'})) {
5965: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5966: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5967: if (($domain eq $cdom) && ($name eq $cnum)) {
5968: my $courseprivid=$env{'request.course.id'};
5969: $courseprivid=~s/\_/\//;
5970: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5971: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5972: return $1;
5973: } else {
5974: if ($env{'request.course.sec'}) {
5975: $courseprivid.='/'.$env{'request.course.sec'};
5976: }
5977: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5978: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5979: return $2;
5980: }
5981: }
5982: }
5983: }
5984: }
5985:
5986: # Free bre to public access
5987:
5988: if ($priv eq 'bre') {
5989: my $copyright=&metadata($uri,'copyright');
5990: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5991: return 'F';
5992: }
5993: if ($copyright eq 'priv') {
5994: $uri=~/([^\/]+)\/([^\/]+)\//;
5995: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5996: return '';
5997: }
5998: }
5999: if ($copyright eq 'domain') {
6000: $uri=~/([^\/]+)\/([^\/]+)\//;
6001: unless (($env{'user.domain'} eq $1) ||
6002: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6003: return '';
6004: }
6005: }
6006: if ($env{'request.role'}=~ /li\.\//) {
6007: # Library role, so allow browsing of resources in this domain.
6008: return 'F';
6009: }
6010: if ($copyright eq 'custom') {
6011: unless (&customaccess($priv,$uri)) { return ''; }
6012: }
6013: }
6014: # Domain coordinator is trying to create a course
6015: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6016: # uri is the requested domain in this case.
6017: # comparison to 'request.role.domain' shows if the user has selected
6018: # a role of dc for the domain in question.
6019: return 'F' if ($uri eq $env{'request.role.domain'});
6020: }
6021:
6022: my $thisallowed='';
6023: my $statecond=0;
6024: my $courseprivid='';
6025:
6026: my $ownaccess;
6027: # Community Coordinator or Assistant Co-author browsing resource space.
6028: if (($priv eq 'bro') && ($env{'user.author'})) {
6029: if ($uri eq '') {
6030: $ownaccess = 1;
6031: } else {
6032: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6033: my $udom = $env{'user.domain'};
6034: my $uname = $env{'user.name'};
6035: if ($uri =~ m{^\Q$udom\E/?$}) {
6036: $ownaccess = 1;
6037: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6038: unless ($uri =~ m{\.\./}) {
6039: $ownaccess = 1;
6040: }
6041: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6042: my $now = time;
6043: if ($uri =~ m{^([^/]+)/?$}) {
6044: my $adom = $1;
6045: foreach my $key (keys(%env)) {
6046: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6047: my ($start,$end) = split('.',$env{$key});
6048: if (($now >= $start) && (!$end || $end < $now)) {
6049: $ownaccess = 1;
6050: last;
6051: }
6052: }
6053: }
6054: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6055: my $adom = $1;
6056: my $aname = $2;
6057: foreach my $role ('ca','aa') {
6058: if ($env{"user.role.$role./$adom/$aname"}) {
6059: my ($start,$end) =
6060: split('.',$env{"user.role.$role./$adom/$aname"});
6061: if (($now >= $start) && (!$end || $end < $now)) {
6062: $ownaccess = 1;
6063: last;
6064: }
6065: }
6066: }
6067: }
6068: }
6069: }
6070: }
6071: }
6072:
6073: # Course
6074:
6075: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6076: unless (($priv eq 'bro') && (!$ownaccess)) {
6077: $thisallowed.=$1;
6078: }
6079: }
6080:
6081: # Domain
6082:
6083: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6084: =~/\Q$priv\E\&([^\:]*)/) {
6085: unless (($priv eq 'bro') && (!$ownaccess)) {
6086: $thisallowed.=$1;
6087: }
6088: }
6089:
6090: # User who is not author or co-author might still be able to edit
6091: # resource of an author in the domain (e.g., if Domain Coordinator).
6092: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6093: (&allowed('mdc',$env{'request.course.id'}))) {
6094: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6095: $thisallowed.=$1;
6096: }
6097: }
6098:
6099: # Course: uri itself is a course
6100: my $courseuri=$uri;
6101: $courseuri=~s/\_(\d)/\/$1/;
6102: $courseuri=~s/^([^\/])/\/$1/;
6103:
6104: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6105: =~/\Q$priv\E\&([^\:]*)/) {
6106: unless (($priv eq 'bro') && (!$ownaccess)) {
6107: $thisallowed.=$1;
6108: }
6109: }
6110:
6111: # URI is an uploaded document for this course, default permissions don't matter
6112: # not allowing 'edit' access (editupload) to uploaded course docs
6113: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6114: $thisallowed='';
6115: my ($match)=&is_on_map($uri);
6116: if ($match) {
6117: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6118: =~/\Q$priv\E\&([^\:]*)/) {
6119: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6120: if (@blockers > 0) {
6121: $thisallowed = 'B';
6122: } else {
6123: $thisallowed.=$1;
6124: }
6125: }
6126: } else {
6127: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6128: if ($refuri) {
6129: if ($refuri =~ m|^/adm/|) {
6130: $thisallowed='F';
6131: } else {
6132: $refuri=&declutter($refuri);
6133: my ($match) = &is_on_map($refuri);
6134: if ($match) {
6135: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6136: if (@blockers > 0) {
6137: $thisallowed = 'B';
6138: } else {
6139: $thisallowed='F';
6140: }
6141: }
6142: }
6143: }
6144: }
6145: }
6146:
6147: if ($priv eq 'bre'
6148: && $thisallowed ne 'F'
6149: && $thisallowed ne '2'
6150: && &is_portfolio_url($uri)) {
6151: $thisallowed = &portfolio_access($uri);
6152: }
6153:
6154: # Full access at system, domain or course-wide level? Exit.
6155: if ($thisallowed=~/F/) {
6156: return 'F';
6157: }
6158:
6159: # If this is generating or modifying users, exit with special codes
6160:
6161: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6162: if (($priv eq 'cca') || ($priv eq 'caa')) {
6163: my ($audom,$auname)=split('/',$uri);
6164: # no author name given, so this just checks on the general right to make a co-author in this domain
6165: unless ($auname) { return $thisallowed; }
6166: # an author name is given, so we are about to actually make a co-author for a certain account
6167: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6168: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6169: ($audom ne $env{'request.role.domain'}))) { return ''; }
6170: }
6171: return $thisallowed;
6172: }
6173: #
6174: # Gathered so far: system, domain and course wide privileges
6175: #
6176: # Course: See if uri or referer is an individual resource that is part of
6177: # the course
6178:
6179: if ($env{'request.course.id'}) {
6180:
6181: $courseprivid=$env{'request.course.id'};
6182: if ($env{'request.course.sec'}) {
6183: $courseprivid.='/'.$env{'request.course.sec'};
6184: }
6185: $courseprivid=~s/\_/\//;
6186: my $checkreferer=1;
6187: my ($match,$cond)=&is_on_map($uri);
6188: if ($match) {
6189: $statecond=$cond;
6190: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6191: =~/\Q$priv\E\&([^\:]*)/) {
6192: my $value = $1;
6193: if ($priv eq 'bre') {
6194: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6195: if (@blockers > 0) {
6196: $thisallowed = 'B';
6197: } else {
6198: $thisallowed.=$value;
6199: }
6200: } else {
6201: $thisallowed.=$value;
6202: }
6203: $checkreferer=0;
6204: }
6205: }
6206:
6207: if ($checkreferer) {
6208: my $refuri=$env{'httpref.'.$orguri};
6209: unless ($refuri) {
6210: foreach my $key (keys(%env)) {
6211: if ($key=~/^httpref\..*\*/) {
6212: my $pattern=$key;
6213: $pattern=~s/^httpref\.\/res\///;
6214: $pattern=~s/\*/\[\^\/\]\+/g;
6215: $pattern=~s/\//\\\//g;
6216: if ($orguri=~/$pattern/) {
6217: $refuri=$env{$key};
6218: }
6219: }
6220: }
6221: }
6222:
6223: if ($refuri) {
6224: $refuri=&declutter($refuri);
6225: my ($match,$cond)=&is_on_map($refuri);
6226: if ($match) {
6227: my $refstatecond=$cond;
6228: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6229: =~/\Q$priv\E\&([^\:]*)/) {
6230: my $value = $1;
6231: if ($priv eq 'bre') {
6232: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6233: if (@blockers > 0) {
6234: $thisallowed = 'B';
6235: } else {
6236: $thisallowed.=$value;
6237: }
6238: } else {
6239: $thisallowed.=$value;
6240: }
6241: $uri=$refuri;
6242: $statecond=$refstatecond;
6243: }
6244: }
6245: }
6246: }
6247: }
6248:
6249: #
6250: # Gathered now: all privileges that could apply, and condition number
6251: #
6252: #
6253: # Full or no access?
6254: #
6255:
6256: if ($thisallowed=~/F/) {
6257: return 'F';
6258: }
6259:
6260: unless ($thisallowed) {
6261: return '';
6262: }
6263:
6264: # Restrictions exist, deal with them
6265: #
6266: # C:according to course preferences
6267: # R:according to resource settings
6268: # L:unless locked
6269: # X:according to user session state
6270: #
6271:
6272: # Possibly locked functionality, check all courses
6273: # Locks might take effect only after 10 minutes cache expiration for other
6274: # courses, and 2 minutes for current course
6275:
6276: my $envkey;
6277: if ($thisallowed=~/L/) {
6278: foreach $envkey (keys(%env)) {
6279: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6280: my $courseid=$2;
6281: my $roleid=$1.'.'.$2;
6282: $courseid=~s/^\///;
6283: my $expiretime=600;
6284: if ($env{'request.role'} eq $roleid) {
6285: $expiretime=120;
6286: }
6287: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6288: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6289: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6290: &coursedescription($courseid,{'freshen_cache' => 1});
6291: }
6292: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6293: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6294: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6295: &log($env{'user.domain'},$env{'user.name'},
6296: $env{'user.home'},
6297: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6298: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6299: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6300: return '';
6301: }
6302: }
6303: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6304: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6305: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6306: &log($env{'user.domain'},$env{'user.name'},
6307: $env{'user.home'},
6308: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6309: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6310: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6311: return '';
6312: }
6313: }
6314: }
6315: }
6316: }
6317:
6318: #
6319: # Rest of the restrictions depend on selected course
6320: #
6321:
6322: unless ($env{'request.course.id'}) {
6323: if ($thisallowed eq 'A') {
6324: return 'A';
6325: } elsif ($thisallowed eq 'B') {
6326: return 'B';
6327: } else {
6328: return '1';
6329: }
6330: }
6331:
6332: #
6333: # Now user is definitely in a course
6334: #
6335:
6336:
6337: # Course preferences
6338:
6339: if ($thisallowed=~/C/) {
6340: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6341: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6342: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6343: =~/\Q$rolecode\E/) {
6344: if (($priv ne 'pch') && ($priv ne 'plc')) {
6345: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6346: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6347: $env{'request.course.id'});
6348: }
6349: return '';
6350: }
6351:
6352: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6353: =~/\Q$unamedom\E/) {
6354: if (($priv ne 'pch') && ($priv ne 'plc')) {
6355: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6356: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6357: $env{'request.course.id'});
6358: }
6359: return '';
6360: }
6361: }
6362:
6363: # Resource preferences
6364:
6365: if ($thisallowed=~/R/) {
6366: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6367: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6368: if (($priv ne 'pch') && ($priv ne 'plc')) {
6369: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6370: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6371: }
6372: return '';
6373: }
6374: }
6375:
6376: # Restricted by state or randomout?
6377:
6378: if ($thisallowed=~/X/) {
6379: if ($env{'acc.randomout'}) {
6380: if (!$symb) { $symb=&symbread($uri,1); }
6381: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6382: return '';
6383: }
6384: }
6385: if (&condval($statecond)) {
6386: return '2';
6387: } else {
6388: return '';
6389: }
6390: }
6391:
6392: if ($thisallowed eq 'A') {
6393: return 'A';
6394: } elsif ($thisallowed eq 'B') {
6395: return 'B';
6396: }
6397: return 'F';
6398: }
6399:
6400: sub get_comm_blocks {
6401: my ($cdom,$cnum) = @_;
6402: if ($cdom eq '' || $cnum eq '') {
6403: return unless ($env{'request.course.id'});
6404: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6405: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6406: }
6407: my %commblocks;
6408: my $hashid=$cdom.'_'.$cnum;
6409: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6410: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6411: %commblocks = %{$blocksref};
6412: } else {
6413: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6414: my $cachetime = 600;
6415: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6416: }
6417: return %commblocks;
6418: }
6419:
6420: sub has_comm_blocking {
6421: my ($priv,$symb,$uri,$blocks) = @_;
6422: return unless ($env{'request.course.id'});
6423: return unless ($priv eq 'bre');
6424: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6425: my %commblocks;
6426: if (ref($blocks) eq 'HASH') {
6427: %commblocks = %{$blocks};
6428: } else {
6429: %commblocks = &get_comm_blocks();
6430: }
6431: return unless (keys(%commblocks) > 0);
6432: if (!$symb) { $symb=&symbread($uri,1); }
6433: my ($map,$resid,undef)=&decode_symb($symb);
6434: my %tocheck = (
6435: maps => $map,
6436: resources => $symb,
6437: );
6438: my @blockers;
6439: my $now = time;
6440: my $navmap = Apache::lonnavmaps::navmap->new();
6441: foreach my $block (keys(%commblocks)) {
6442: if ($block =~ /^(\d+)____(\d+)$/) {
6443: my ($start,$end) = ($1,$2);
6444: if ($start <= $now && $end >= $now) {
6445: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6446: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6447: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6448: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6449: unless (grep(/^\Q$block\E$/,@blockers)) {
6450: push(@blockers,$block);
6451: }
6452: }
6453: }
6454: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6455: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6456: unless (grep(/^\Q$block\E$/,@blockers)) {
6457: push(@blockers,$block);
6458: }
6459: }
6460: }
6461: }
6462: }
6463: }
6464: } elsif ($block =~ /^firstaccess____(.+)$/) {
6465: my $item = $1;
6466: my @to_test;
6467: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6468: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6469: my $check_interval;
6470: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6471: my @interval;
6472: my $type = 'map';
6473: if ($item eq 'course') {
6474: $type = 'course';
6475: @interval=&EXT("resource.0.interval");
6476: } else {
6477: if ($item =~ /___\d+___/) {
6478: $type = 'resource';
6479: @interval=&EXT("resource.0.interval",$item);
6480: if (ref($navmap)) {
6481: my $res = $navmap->getBySymb($item);
6482: push(@to_test,$res);
6483: }
6484: } else {
6485: my $mapsymb = &symbread($item,1);
6486: if ($mapsymb) {
6487: if (ref($navmap)) {
6488: my $mapres = $navmap->getBySymb($mapsymb);
6489: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6490: foreach my $res (@to_test) {
6491: my $symb = $res->symb();
6492: next if ($symb eq $mapsymb);
6493: if ($symb ne '') {
6494: @interval=&EXT("resource.0.interval",$symb);
6495: last;
6496: }
6497: }
6498: }
6499: }
6500: }
6501: }
6502: if ($interval[0] =~ /\d+/) {
6503: my $first_access;
6504: if ($type eq 'resource') {
6505: $first_access=&get_first_access($interval[1],$item);
6506: } elsif ($type eq 'map') {
6507: $first_access=&get_first_access($interval[1],undef,$item);
6508: } else {
6509: $first_access=&get_first_access($interval[1]);
6510: }
6511: if ($first_access) {
6512: my $timesup = $first_access+$interval[0];
6513: if ($timesup > $now) {
6514: foreach my $res (@to_test) {
6515: if ($res->is_problem()) {
6516: if ($res->completable()) {
6517: unless (grep(/^\Q$block\E$/,@blockers)) {
6518: push(@blockers,$block);
6519: }
6520: last;
6521: }
6522: }
6523: }
6524: }
6525: }
6526: }
6527: }
6528: }
6529: }
6530: }
6531: }
6532: return @blockers;
6533: }
6534:
6535: sub check_docs_block {
6536: my ($docsblock,$tocheck) =@_;
6537: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6538: return;
6539: }
6540: if (ref($docsblock->{'maps'}) eq 'HASH') {
6541: if ($tocheck->{'maps'}) {
6542: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6543: return 1;
6544: }
6545: }
6546: }
6547: if (ref($docsblock->{'resources'}) eq 'HASH') {
6548: if ($tocheck->{'resources'}) {
6549: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6550: return 1;
6551: }
6552: }
6553: }
6554: return;
6555: }
6556:
6557: #
6558: # Removes the versino from a URI and
6559: # splits it in to its filename and path to the filename.
6560: # Seems like File::Basename could have done this more clearly.
6561: # Parameters:
6562: # $uri - input URI
6563: # Returns:
6564: # Two element list consisting of
6565: # $pathname - the URI up to and excluding the trailing /
6566: # $filename - The part of the URI following the last /
6567: # NOTE:
6568: # Another realization of this is simply:
6569: # use File::Basename;
6570: # ...
6571: # $uri = shift;
6572: # $filename = basename($uri);
6573: # $path = dirname($uri);
6574: # return ($filename, $path);
6575: #
6576: # The implementation below is probably faster however.
6577: #
6578: sub split_uri_for_cond {
6579: my $uri=&deversion(&declutter(shift));
6580: my @uriparts=split(/\//,$uri);
6581: my $filename=pop(@uriparts);
6582: my $pathname=join('/',@uriparts);
6583: return ($pathname,$filename);
6584: }
6585: # --------------------------------------------------- Is a resource on the map?
6586:
6587: sub is_on_map {
6588: my ($pathname,$filename) = &split_uri_for_cond(shift);
6589: #Trying to find the conditional for the file
6590: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6591: /\&\Q$filename\E\:([\d\|]+)\&/);
6592: if ($match) {
6593: return (1,$1);
6594: } else {
6595: return (0,0);
6596: }
6597: }
6598:
6599: # --------------------------------------------------------- Get symb from alias
6600:
6601: sub get_symb_from_alias {
6602: my $symb=shift;
6603: my ($map,$resid,$url)=&decode_symb($symb);
6604: # Already is a symb
6605: if ($url) { return $symb; }
6606: # Must be an alias
6607: my $aliassymb='';
6608: my %bighash;
6609: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6610: &GDBM_READER(),0640)) {
6611: my $rid=$bighash{'mapalias_'.$symb};
6612: if ($rid) {
6613: my ($mapid,$resid)=split(/\./,$rid);
6614: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6615: $resid,$bighash{'src_'.$rid});
6616: }
6617: untie %bighash;
6618: }
6619: return $aliassymb;
6620: }
6621:
6622: # ----------------------------------------------------------------- Define Role
6623:
6624: sub definerole {
6625: if (allowed('mcr','/')) {
6626: my ($rolename,$sysrole,$domrole,$courole)=@_;
6627: foreach my $role (split(':',$sysrole)) {
6628: my ($crole,$cqual)=split(/\&/,$role);
6629: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6630: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6631: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6632: return "refused:s:$crole&$cqual";
6633: }
6634: }
6635: }
6636: foreach my $role (split(':',$domrole)) {
6637: my ($crole,$cqual)=split(/\&/,$role);
6638: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6639: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6640: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6641: return "refused:d:$crole&$cqual";
6642: }
6643: }
6644: }
6645: foreach my $role (split(':',$courole)) {
6646: my ($crole,$cqual)=split(/\&/,$role);
6647: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6648: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6649: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6650: return "refused:c:$crole&$cqual";
6651: }
6652: }
6653: }
6654: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6655: "$env{'user.domain'}:$env{'user.name'}:".
6656: "rolesdef_$rolename=".
6657: escape($sysrole.'_'.$domrole.'_'.$courole);
6658: return reply($command,$env{'user.home'});
6659: } else {
6660: return 'refused';
6661: }
6662: }
6663:
6664: # ---------------- Make a metadata query against the network of library servers
6665:
6666: sub metadata_query {
6667: my ($query,$custom,$customshow,$server_array)=@_;
6668: my %rhash;
6669: my %libserv = &all_library();
6670: my @server_list = (defined($server_array) ? @$server_array
6671: : keys(%libserv) );
6672: for my $server (@server_list) {
6673: unless ($custom or $customshow) {
6674: my $reply=&reply("querysend:".&escape($query),$server);
6675: $rhash{$server}=$reply;
6676: }
6677: else {
6678: my $reply=&reply("querysend:".&escape($query).':'.
6679: &escape($custom).':'.&escape($customshow),
6680: $server);
6681: $rhash{$server}=$reply;
6682: }
6683: }
6684: return \%rhash;
6685: }
6686:
6687: # ----------------------------------------- Send log queries and wait for reply
6688:
6689: sub log_query {
6690: my ($uname,$udom,$query,%filters)=@_;
6691: my $uhome=&homeserver($uname,$udom);
6692: if ($uhome eq 'no_host') { return 'error: no_host'; }
6693: my $uhost=&hostname($uhome);
6694: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6695: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6696: $uhome);
6697: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6698: return get_query_reply($queryid);
6699: }
6700:
6701: # -------------------------- Update MySQL table for portfolio file
6702:
6703: sub update_portfolio_table {
6704: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6705: if ($group ne '') {
6706: $file_name =~s /^\Q$group\E//;
6707: }
6708: my $homeserver = &homeserver($uname,$udom);
6709: my $queryid=
6710: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6711: ':'.&escape($file_name).':'.$action,$homeserver);
6712: my $reply = &get_query_reply($queryid);
6713: return $reply;
6714: }
6715:
6716: # -------------------------- Update MySQL allusers table
6717:
6718: sub update_allusers_table {
6719: my ($uname,$udom,$names) = @_;
6720: my $homeserver = &homeserver($uname,$udom);
6721: my $queryid=
6722: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6723: 'lastname='.&escape($names->{'lastname'}).'%%'.
6724: 'firstname='.&escape($names->{'firstname'}).'%%'.
6725: 'middlename='.&escape($names->{'middlename'}).'%%'.
6726: 'generation='.&escape($names->{'generation'}).'%%'.
6727: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6728: 'id='.&escape($names->{'id'}),$homeserver);
6729: return;
6730: }
6731:
6732: # ------- Request retrieval of institutional classlists for course(s)
6733:
6734: sub fetch_enrollment_query {
6735: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6736: my $homeserver;
6737: my $maxtries = 1;
6738: if ($context eq 'automated') {
6739: $homeserver = $perlvar{'lonHostID'};
6740: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6741: } else {
6742: $homeserver = &homeserver($cnum,$dom);
6743: }
6744: my $host=&hostname($homeserver);
6745: my $cmd = '';
6746: foreach my $affiliate (keys(%{$affiliatesref})) {
6747: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6748: }
6749: $cmd =~ s/%%$//;
6750: $cmd = &escape($cmd);
6751: my $query = 'fetchenrollment';
6752: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6753: unless ($queryid=~/^\Q$host\E\_/) {
6754: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6755: return 'error: '.$queryid;
6756: }
6757: my $reply = &get_query_reply($queryid);
6758: my $tries = 1;
6759: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6760: $reply = &get_query_reply($queryid);
6761: $tries ++;
6762: }
6763: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6764: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6765: } else {
6766: my @responses = split(/:/,$reply);
6767: if ($homeserver eq $perlvar{'lonHostID'}) {
6768: foreach my $line (@responses) {
6769: my ($key,$value) = split(/=/,$line,2);
6770: $$replyref{$key} = $value;
6771: }
6772: } else {
6773: my $pathname = LONCAPA::tempdir();
6774: foreach my $line (@responses) {
6775: my ($key,$value) = split(/=/,$line);
6776: $$replyref{$key} = $value;
6777: if ($value > 0) {
6778: foreach my $item (@{$$affiliatesref{$key}}) {
6779: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6780: my $destname = $pathname.'/'.$filename;
6781: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6782: if ($xml_classlist =~ /^error/) {
6783: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6784: } else {
6785: if ( open(FILE,">$destname") ) {
6786: print FILE &unescape($xml_classlist);
6787: close(FILE);
6788: } else {
6789: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6790: }
6791: }
6792: }
6793: }
6794: }
6795: }
6796: return 'ok';
6797: }
6798: return 'error';
6799: }
6800:
6801: sub get_query_reply {
6802: my $queryid=shift;
6803: my $replyfile=LONCAPA::tempdir().$queryid;
6804: my $reply='';
6805: for (1..100) {
6806: sleep 2;
6807: if (-e $replyfile.'.end') {
6808: if (open(my $fh,$replyfile)) {
6809: $reply = join('',<$fh>);
6810: close($fh);
6811: } else { return 'error: reply_file_error'; }
6812: return &unescape($reply);
6813: }
6814: }
6815: return 'timeout:'.$queryid;
6816: }
6817:
6818: sub courselog_query {
6819: #
6820: # possible filters:
6821: # url: url or symb
6822: # username
6823: # domain
6824: # action: view, submit, grade
6825: # start: timestamp
6826: # end: timestamp
6827: #
6828: my (%filters)=@_;
6829: unless ($env{'request.course.id'}) { return 'no_course'; }
6830: if ($filters{'url'}) {
6831: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6832: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6833: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6834: }
6835: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6836: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6837: return &log_query($cname,$cdom,'courselog',%filters);
6838: }
6839:
6840: sub userlog_query {
6841: #
6842: # possible filters:
6843: # action: log check role
6844: # start: timestamp
6845: # end: timestamp
6846: #
6847: my ($uname,$udom,%filters)=@_;
6848: return &log_query($uname,$udom,'userlog',%filters);
6849: }
6850:
6851: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6852:
6853: sub auto_run {
6854: my ($cnum,$cdom) = @_;
6855: my $response = 0;
6856: my $settings;
6857: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6858: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6859: $settings = $domconfig{'autoenroll'};
6860: if ($settings->{'run'} eq '1') {
6861: $response = 1;
6862: }
6863: } else {
6864: my $homeserver;
6865: if (&is_course($cdom,$cnum)) {
6866: $homeserver = &homeserver($cnum,$cdom);
6867: } else {
6868: $homeserver = &domain($cdom,'primary');
6869: }
6870: if ($homeserver ne 'no_host') {
6871: $response = &reply('autorun:'.$cdom,$homeserver);
6872: }
6873: }
6874: return $response;
6875: }
6876:
6877: sub auto_get_sections {
6878: my ($cnum,$cdom,$inst_coursecode) = @_;
6879: my $homeserver;
6880: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6881: $homeserver = &homeserver($cnum,$cdom);
6882: }
6883: if (!defined($homeserver)) {
6884: if ($cdom =~ /^$match_domain$/) {
6885: $homeserver = &domain($cdom,'primary');
6886: }
6887: }
6888: my @secs;
6889: if (defined($homeserver)) {
6890: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6891: unless ($response eq 'refused') {
6892: @secs = split(/:/,$response);
6893: }
6894: }
6895: return @secs;
6896: }
6897:
6898: sub auto_new_course {
6899: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6900: my $homeserver = &homeserver($cnum,$cdom);
6901: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6902: return $response;
6903: }
6904:
6905: sub auto_validate_courseID {
6906: my ($cnum,$cdom,$inst_course_id) = @_;
6907: my $homeserver = &homeserver($cnum,$cdom);
6908: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6909: return $response;
6910: }
6911:
6912: sub auto_validate_instcode {
6913: my ($cnum,$cdom,$instcode,$owner) = @_;
6914: my ($homeserver,$response);
6915: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6916: $homeserver = &homeserver($cnum,$cdom);
6917: }
6918: if (!defined($homeserver)) {
6919: if ($cdom =~ /^$match_domain$/) {
6920: $homeserver = &domain($cdom,'primary');
6921: }
6922: }
6923: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6924: &escape($instcode).':'.&escape($owner),$homeserver));
6925: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6926: return ($outcome,$description);
6927: }
6928:
6929: sub auto_create_password {
6930: my ($cnum,$cdom,$authparam,$udom) = @_;
6931: my ($homeserver,$response);
6932: my $create_passwd = 0;
6933: my $authchk = '';
6934: if ($udom =~ /^$match_domain$/) {
6935: $homeserver = &domain($udom,'primary');
6936: }
6937: if ($homeserver eq '') {
6938: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6939: $homeserver = &homeserver($cnum,$cdom);
6940: }
6941: }
6942: if ($homeserver eq '') {
6943: $authchk = 'nodomain';
6944: } else {
6945: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6946: if ($response eq 'refused') {
6947: $authchk = 'refused';
6948: } else {
6949: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6950: }
6951: }
6952: return ($authparam,$create_passwd,$authchk);
6953: }
6954:
6955: sub auto_photo_permission {
6956: my ($cnum,$cdom,$students) = @_;
6957: my $homeserver = &homeserver($cnum,$cdom);
6958: my ($outcome,$perm_reqd,$conditions) =
6959: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6960: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6961: return (undef,undef);
6962: }
6963: return ($outcome,$perm_reqd,$conditions);
6964: }
6965:
6966: sub auto_checkphotos {
6967: my ($uname,$udom,$pid) = @_;
6968: my $homeserver = &homeserver($uname,$udom);
6969: my ($result,$resulttype);
6970: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6971: &escape($uname).':'.&escape($pid),
6972: $homeserver));
6973: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6974: return (undef,undef);
6975: }
6976: if ($outcome) {
6977: ($result,$resulttype) = split(/:/,$outcome);
6978: }
6979: return ($result,$resulttype);
6980: }
6981:
6982: sub auto_photochoice {
6983: my ($cnum,$cdom) = @_;
6984: my $homeserver = &homeserver($cnum,$cdom);
6985: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6986: &escape($cdom),
6987: $homeserver)));
6988: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6989: return (undef,undef);
6990: }
6991: return ($update,$comment);
6992: }
6993:
6994: sub auto_photoupdate {
6995: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6996: my $homeserver = &homeserver($cnum,$dom);
6997: my $host=&hostname($homeserver);
6998: my $cmd = '';
6999: my $maxtries = 1;
7000: foreach my $affiliate (keys(%{$affiliatesref})) {
7001: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7002: }
7003: $cmd =~ s/%%$//;
7004: $cmd = &escape($cmd);
7005: my $query = 'institutionalphotos';
7006: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7007: unless ($queryid=~/^\Q$host\E\_/) {
7008: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7009: return 'error: '.$queryid;
7010: }
7011: my $reply = &get_query_reply($queryid);
7012: my $tries = 1;
7013: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7014: $reply = &get_query_reply($queryid);
7015: $tries ++;
7016: }
7017: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7018: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7019: } else {
7020: my @responses = split(/:/,$reply);
7021: my $outcome = shift(@responses);
7022: foreach my $item (@responses) {
7023: my ($key,$value) = split(/=/,$item);
7024: $$photo{$key} = $value;
7025: }
7026: return $outcome;
7027: }
7028: return 'error';
7029: }
7030:
7031: sub auto_instcode_format {
7032: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7033: $cat_order) = @_;
7034: my $courses = '';
7035: my @homeservers;
7036: if ($caller eq 'global') {
7037: my %servers = &get_servers($codedom,'library');
7038: foreach my $tryserver (keys(%servers)) {
7039: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7040: push(@homeservers,$tryserver);
7041: }
7042: }
7043: } elsif ($caller eq 'requests') {
7044: if ($codedom =~ /^$match_domain$/) {
7045: my $chome = &domain($codedom,'primary');
7046: unless ($chome eq 'no_host') {
7047: push(@homeservers,$chome);
7048: }
7049: }
7050: } else {
7051: push(@homeservers,&homeserver($caller,$codedom));
7052: }
7053: foreach my $code (keys(%{$instcodes})) {
7054: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7055: }
7056: chop($courses);
7057: my $ok_response = 0;
7058: my $response;
7059: while (@homeservers > 0 && $ok_response == 0) {
7060: my $server = shift(@homeservers);
7061: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7062: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7063: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7064: split(/:/,$response);
7065: %{$codes} = (%{$codes},&str2hash($codes_str));
7066: push(@{$codetitles},&str2array($codetitles_str));
7067: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7068: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7069: $ok_response = 1;
7070: }
7071: }
7072: if ($ok_response) {
7073: return 'ok';
7074: } else {
7075: return $response;
7076: }
7077: }
7078:
7079: sub auto_instcode_defaults {
7080: my ($domain,$returnhash,$code_order) = @_;
7081: my @homeservers;
7082:
7083: my %servers = &get_servers($domain,'library');
7084: foreach my $tryserver (keys(%servers)) {
7085: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7086: push(@homeservers,$tryserver);
7087: }
7088: }
7089:
7090: my $response;
7091: foreach my $server (@homeservers) {
7092: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7093: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7094:
7095: foreach my $pair (split(/\&/,$response)) {
7096: my ($name,$value)=split(/\=/,$pair);
7097: if ($name eq 'code_order') {
7098: @{$code_order} = split(/\&/,&unescape($value));
7099: } else {
7100: $returnhash->{&unescape($name)}=&unescape($value);
7101: }
7102: }
7103: return 'ok';
7104: }
7105:
7106: return $response;
7107: }
7108:
7109: sub auto_possible_instcodes {
7110: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7111: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7112: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7113: return;
7114: }
7115: my (@homeservers,$uhome);
7116: if (defined(&domain($domain,'primary'))) {
7117: $uhome=&domain($domain,'primary');
7118: push(@homeservers,&domain($domain,'primary'));
7119: } else {
7120: my %servers = &get_servers($domain,'library');
7121: foreach my $tryserver (keys(%servers)) {
7122: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7123: push(@homeservers,$tryserver);
7124: }
7125: }
7126: }
7127: my $response;
7128: foreach my $server (@homeservers) {
7129: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7130: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7131: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7132: split(':',$response);
7133: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7134: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7135: foreach my $item (split('&',$cat_title)) {
7136: my ($name,$value)=split('=',$item);
7137: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7138: }
7139: foreach my $item (split('&',$cat_order)) {
7140: my ($name,$value)=split('=',$item);
7141: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7142: }
7143: return 'ok';
7144: }
7145: return $response;
7146: }
7147:
7148: sub auto_courserequest_checks {
7149: my ($dom) = @_;
7150: my ($homeserver,%validations);
7151: if ($dom =~ /^$match_domain$/) {
7152: $homeserver = &domain($dom,'primary');
7153: }
7154: unless ($homeserver eq 'no_host') {
7155: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7156: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7157: my @items = split(/&/,$response);
7158: foreach my $item (@items) {
7159: my ($key,$value) = split('=',$item);
7160: $validations{&unescape($key)} = &thaw_unescape($value);
7161: }
7162: }
7163: }
7164: return %validations;
7165: }
7166:
7167: sub auto_courserequest_validation {
7168: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7169: my ($homeserver,$response);
7170: if ($dom =~ /^$match_domain$/) {
7171: $homeserver = &domain($dom,'primary');
7172: }
7173: unless ($homeserver eq 'no_host') {
7174:
7175: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7176: ':'.&escape($crstype).':'.&escape($inststatuslist).
7177: ':'.&escape($instcode).':'.&escape($instseclist),
7178: $homeserver));
7179: }
7180: return $response;
7181: }
7182:
7183: sub auto_validate_class_sec {
7184: my ($cdom,$cnum,$owners,$inst_class) = @_;
7185: my $homeserver = &homeserver($cnum,$cdom);
7186: my $ownerlist;
7187: if (ref($owners) eq 'ARRAY') {
7188: $ownerlist = join(',',@{$owners});
7189: } else {
7190: $ownerlist = $owners;
7191: }
7192: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7193: &escape($ownerlist).':'.$cdom,$homeserver);
7194: return $response;
7195: }
7196:
7197: # ------------------------------------------------------- Course Group routines
7198:
7199: sub get_coursegroups {
7200: my ($cdom,$cnum,$group,$namespace) = @_;
7201: return(&dump($namespace,$cdom,$cnum,$group));
7202: }
7203:
7204: sub modify_coursegroup {
7205: my ($cdom,$cnum,$groupsettings) = @_;
7206: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7207: }
7208:
7209: sub toggle_coursegroup_status {
7210: my ($cdom,$cnum,$group,$action) = @_;
7211: my ($from_namespace,$to_namespace);
7212: if ($action eq 'delete') {
7213: $from_namespace = 'coursegroups';
7214: $to_namespace = 'deleted_groups';
7215: } else {
7216: $from_namespace = 'deleted_groups';
7217: $to_namespace = 'coursegroups';
7218: }
7219: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7220: if (my $tmp = &error(%curr_group)) {
7221: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7222: return ('read error',$tmp);
7223: } else {
7224: my %savedsettings = %curr_group;
7225: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7226: my $deloutcome;
7227: if ($result eq 'ok') {
7228: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7229: } else {
7230: return ('write error',$result);
7231: }
7232: if ($deloutcome eq 'ok') {
7233: return 'ok';
7234: } else {
7235: return ('delete error',$deloutcome);
7236: }
7237: }
7238: }
7239:
7240: sub modify_group_roles {
7241: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7242: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7243: my $role = 'gr/'.&escape($userprivs);
7244: my ($uname,$udom) = split(/:/,$user);
7245: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7246: if ($result eq 'ok') {
7247: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7248: }
7249: return $result;
7250: }
7251:
7252: sub modify_coursegroup_membership {
7253: my ($cdom,$cnum,$membership) = @_;
7254: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7255: return $result;
7256: }
7257:
7258: sub get_active_groups {
7259: my ($udom,$uname,$cdom,$cnum) = @_;
7260: my $now = time;
7261: my %groups = ();
7262: foreach my $key (keys(%env)) {
7263: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7264: my ($start,$end) = split(/\./,$env{$key});
7265: if (($end!=0) && ($end<$now)) { next; }
7266: if (($start!=0) && ($start>$now)) { next; }
7267: if ($1 eq $cdom && $2 eq $cnum) {
7268: $groups{$3} = $env{$key} ;
7269: }
7270: }
7271: }
7272: return %groups;
7273: }
7274:
7275: sub get_group_membership {
7276: my ($cdom,$cnum,$group) = @_;
7277: return(&dump('groupmembership',$cdom,$cnum,$group));
7278: }
7279:
7280: sub get_users_groups {
7281: my ($udom,$uname,$courseid) = @_;
7282: my @usersgroups;
7283: my $cachetime=1800;
7284:
7285: my $hashid="$udom:$uname:$courseid";
7286: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7287: if (defined($cached)) {
7288: @usersgroups = split(/:/,$grouplist);
7289: } else {
7290: $grouplist = '';
7291: my $courseurl = &courseid_to_courseurl($courseid);
7292: my $extra = &freeze_escape({'skipcheck' => 1});
7293: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
7294: my $access_end = $env{'course.'.$courseid.
7295: '.default_enrollment_end_date'};
7296: my $now = time;
7297: foreach my $key (keys(%roleshash)) {
7298: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7299: my $group = $1;
7300: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7301: my $start = $2;
7302: my $end = $1;
7303: if ($start == -1) { next; } # deleted from group
7304: if (($start!=0) && ($start>$now)) { next; }
7305: if (($end!=0) && ($end<$now)) {
7306: if ($access_end && $access_end < $now) {
7307: if ($access_end - $end < 86400) {
7308: push(@usersgroups,$group);
7309: }
7310: }
7311: next;
7312: }
7313: push(@usersgroups,$group);
7314: }
7315: }
7316: }
7317: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7318: $grouplist = join(':',@usersgroups);
7319: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7320: }
7321: return @usersgroups;
7322: }
7323:
7324: sub devalidate_getgroups_cache {
7325: my ($udom,$uname,$cdom,$cnum)=@_;
7326: my $courseid = $cdom.'_'.$cnum;
7327:
7328: my $hashid="$udom:$uname:$courseid";
7329: &devalidate_cache_new('getgroups',$hashid);
7330: }
7331:
7332: # ------------------------------------------------------------------ Plain Text
7333:
7334: sub plaintext {
7335: my ($short,$type,$cid,$forcedefault) = @_;
7336: if ($short =~ m{^cr/}) {
7337: return (split('/',$short))[-1];
7338: }
7339: if (!defined($cid)) {
7340: $cid = $env{'request.course.id'};
7341: }
7342: my %rolenames = (
7343: Course => 'std',
7344: Community => 'alt1',
7345: );
7346: if ($cid ne '') {
7347: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7348: unless ($forcedefault) {
7349: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7350: &Apache::lonlocal::mt_escape(\$roletext);
7351: return &Apache::lonlocal::mt($roletext);
7352: }
7353: }
7354: }
7355: if ((defined($type)) && (defined($rolenames{$type})) &&
7356: (defined($rolenames{$type})) &&
7357: (defined($prp{$short}{$rolenames{$type}}))) {
7358: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7359: } elsif ($cid ne '') {
7360: my $crstype = $env{'course.'.$cid.'.type'};
7361: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7362: (defined($prp{$short}{$rolenames{$crstype}}))) {
7363: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7364: }
7365: }
7366: return &Apache::lonlocal::mt($prp{$short}{'std'});
7367: }
7368:
7369: # ----------------------------------------------------------------- Assign Role
7370:
7371: sub assignrole {
7372: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7373: $context)=@_;
7374: my $mrole;
7375: if ($role =~ /^cr\//) {
7376: my $cwosec=$url;
7377: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7378: unless (&allowed('ccr',$cwosec)) {
7379: my $refused = 1;
7380: if ($context eq 'requestcourses') {
7381: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7382: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7383: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7384: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7385: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7386: if ($crsenv{'internal.courseowner'} eq
7387: $env{'user.name'}.':'.$env{'user.domain'}) {
7388: $refused = '';
7389: }
7390: }
7391: }
7392: }
7393: }
7394: if ($refused) {
7395: &logthis('Refused custom assignrole: '.
7396: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7397: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7398: return 'refused';
7399: }
7400: }
7401: $mrole='cr';
7402: } elsif ($role =~ /^gr\//) {
7403: my $cwogrp=$url;
7404: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7405: unless (&allowed('mdg',$cwogrp)) {
7406: &logthis('Refused group assignrole: '.
7407: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7408: $env{'user.name'}.' at '.$env{'user.domain'});
7409: return 'refused';
7410: }
7411: $mrole='gr';
7412: } else {
7413: my $cwosec=$url;
7414: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7415: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7416: my $refused;
7417: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7418: if (!(&allowed('c'.$role,$url))) {
7419: $refused = 1;
7420: }
7421: } else {
7422: $refused = 1;
7423: }
7424: if ($refused) {
7425: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7426: if (!$selfenroll && $context eq 'course') {
7427: my %crsenv;
7428: if ($role eq 'cc' || $role eq 'co') {
7429: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7430: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7431: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7432: if ($crsenv{'internal.courseowner'} eq
7433: $env{'user.name'}.':'.$env{'user.domain'}) {
7434: $refused = '';
7435: }
7436: }
7437: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7438: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7439: if ($crsenv{'internal.courseowner'} eq
7440: $env{'user.name'}.':'.$env{'user.domain'}) {
7441: $refused = '';
7442: }
7443: }
7444: }
7445: }
7446: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7447: $refused = '';
7448: } elsif ($context eq 'requestcourses') {
7449: my @possroles = ('st','ta','ep','in','cc','co');
7450: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7451: my $wrongcc;
7452: if ($cnum =~ /^$match_community$/) {
7453: $wrongcc = 1 if ($role eq 'cc');
7454: } else {
7455: $wrongcc = 1 if ($role eq 'co');
7456: }
7457: unless ($wrongcc) {
7458: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7459: if ($crsenv{'internal.courseowner'} eq
7460: $env{'user.name'}.':'.$env{'user.domain'}) {
7461: $refused = '';
7462: }
7463: }
7464: }
7465: }
7466: if ($refused) {
7467: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7468: ' '.$role.' '.$end.' '.$start.' by '.
7469: $env{'user.name'}.' at '.$env{'user.domain'});
7470: return 'refused';
7471: }
7472: }
7473: } elsif ($role eq 'au') {
7474: if ($url ne '/'.$udom.'/') {
7475: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7476: ' to assign author role for '.$uname.':'.$udom.
7477: ' in domain: '.$url.' refused (wrong domain).');
7478: return 'refused';
7479: }
7480: }
7481: $mrole=$role;
7482: }
7483: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7484: "$udom:$uname:$url".'_'."$mrole=$role";
7485: if ($end) { $command.='_'.$end; }
7486: if ($start) {
7487: if ($end) {
7488: $command.='_'.$start;
7489: } else {
7490: $command.='_0_'.$start;
7491: }
7492: }
7493: my $origstart = $start;
7494: my $origend = $end;
7495: my $delflag;
7496: # actually delete
7497: if ($deleteflag) {
7498: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7499: # modify command to delete the role
7500: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7501: "$udom:$uname:$url".'_'."$mrole";
7502: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7503: # set start and finish to negative values for userrolelog
7504: $start=-1;
7505: $end=-1;
7506: $delflag = 1;
7507: }
7508: }
7509: # send command
7510: my $answer=&reply($command,&homeserver($uname,$udom));
7511: # log new user role if status is ok
7512: if ($answer eq 'ok') {
7513: &userrolelog($role,$uname,$udom,$url,$start,$end);
7514: # for course roles, perform group memberships changes triggered by role change.
7515: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
7516: unless ($role =~ /^gr/) {
7517: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7518: $origstart,$selfenroll,$context);
7519: }
7520: if ($role eq 'cc') {
7521: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7522: }
7523: }
7524: return $answer;
7525: }
7526:
7527: sub autoupdate_coowners {
7528: my ($url,$end,$start,$uname,$udom) = @_;
7529: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7530: if (($cdom ne '') && ($cnum ne '')) {
7531: my $now = time;
7532: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7533: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7534: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7535: my $instcode = $coursehash{'internal.coursecode'};
7536: if ($instcode ne '') {
7537: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7538: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7539: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7540: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7541: if ($result eq 'valid') {
7542: if ($coursehash{'internal.co-owners'}) {
7543: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7544: push(@newcoowners,$coowner);
7545: }
7546: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7547: push(@newcoowners,$uname.':'.$udom);
7548: }
7549: @newcoowners = sort(@newcoowners);
7550: } else {
7551: push(@newcoowners,$uname.':'.$udom);
7552: }
7553: } else {
7554: if ($coursehash{'internal.co-owners'}) {
7555: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7556: unless ($coowner eq $uname.':'.$udom) {
7557: push(@newcoowners,$coowner);
7558: }
7559: }
7560: unless (@newcoowners > 0) {
7561: $delcoowners = 1;
7562: $coowners = '';
7563: }
7564: }
7565: }
7566: if (@newcoowners || $delcoowners) {
7567: &store_coowners($cdom,$cnum,$coursehash{'home'},
7568: $delcoowners,@newcoowners);
7569: }
7570: }
7571: }
7572: }
7573: }
7574: }
7575: }
7576:
7577: sub store_coowners {
7578: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
7579: my $cid = $cdom.'_'.$cnum;
7580: my ($coowners,$delresult,$putresult);
7581: if (@newcoowners) {
7582: $coowners = join(',',@newcoowners);
7583: my %coownershash = (
7584: 'internal.co-owners' => $coowners,
7585: );
7586: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
7587: if ($putresult eq 'ok') {
7588: if ($env{'course.'.$cid.'.num'} eq $cnum) {
7589: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
7590: }
7591: }
7592: }
7593: if ($delcoowners) {
7594: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
7595: if ($delresult eq 'ok') {
7596: if ($env{'course.'.$cid.'.internal.co-owners'}) {
7597: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
7598: }
7599: }
7600: }
7601: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
7602: my %crsinfo =
7603: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
7604: if (ref($crsinfo{$cid}) eq 'HASH') {
7605: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
7606: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
7607: }
7608: }
7609: }
7610:
7611: # -------------------------------------------------- Modify user authentication
7612: # Overrides without validation
7613:
7614: sub modifyuserauth {
7615: my ($udom,$uname,$umode,$upass)=@_;
7616: my $uhome=&homeserver($uname,$udom);
7617: unless (&allowed('mau',$udom)) { return 'refused'; }
7618: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
7619: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7620: ' in domain '.$env{'request.role.domain'});
7621: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7622: &escape($upass),$uhome);
7623: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7624: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7625: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7626: &log($udom,,$uname,$uhome,
7627: 'Authentication changed by '.$env{'user.domain'}.', '.
7628: $env{'user.name'}.', '.$umode.
7629: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7630: unless ($reply eq 'ok') {
7631: &logthis('Authentication mode error: '.$reply);
7632: return 'error: '.$reply;
7633: }
7634: return 'ok';
7635: }
7636:
7637: # --------------------------------------------------------------- Modify a user
7638:
7639: sub modifyuser {
7640: my ($udom, $uname, $uid,
7641: $umode, $upass, $first,
7642: $middle, $last, $gene,
7643: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7644: $udom= &LONCAPA::clean_domain($udom);
7645: $uname=&LONCAPA::clean_username($uname);
7646: my $showcandelete = 'none';
7647: if (ref($candelete) eq 'ARRAY') {
7648: if (@{$candelete} > 0) {
7649: $showcandelete = join(', ',@{$candelete});
7650: }
7651: }
7652: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7653: $umode.', '.$first.', '.$middle.', '.
7654: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7655: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7656: ' desiredhome not specified').
7657: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7658: ' in domain '.$env{'request.role.domain'});
7659: my $uhome=&homeserver($uname,$udom,'true');
7660: my $newuser;
7661: if ($uhome eq 'no_host') {
7662: $newuser = 1;
7663: }
7664: # ----------------------------------------------------------------- Create User
7665: if (($uhome eq 'no_host') &&
7666: (($umode && $upass) || ($umode eq 'localauth'))) {
7667: my $unhome='';
7668: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7669: $unhome = $desiredhome;
7670: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7671: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7672: } else { # load balancing routine for determining $unhome
7673: my $loadm=10000000;
7674: my %servers = &get_servers($udom,'library');
7675: foreach my $tryserver (keys(%servers)) {
7676: my $answer=reply('load',$tryserver);
7677: if (($answer=~/\d+/) && ($answer<$loadm)) {
7678: $loadm=$answer;
7679: $unhome=$tryserver;
7680: }
7681: }
7682: }
7683: if (($unhome eq '') || ($unhome eq 'no_host')) {
7684: return 'error: unable to find a home server for '.$uname.
7685: ' in domain '.$udom;
7686: }
7687: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7688: &escape($upass),$unhome);
7689: unless ($reply eq 'ok') {
7690: return 'error: '.$reply;
7691: }
7692: $uhome=&homeserver($uname,$udom,'true');
7693: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7694: return 'error: unable verify users home machine.';
7695: }
7696: } # End of creation of new user
7697: # ---------------------------------------------------------------------- Add ID
7698: if ($uid) {
7699: $uid=~tr/A-Z/a-z/;
7700: my %uidhash=&idrget($udom,$uname);
7701: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7702: && (!$forceid)) {
7703: unless ($uid eq $uidhash{$uname}) {
7704: return 'error: user id "'.$uid.'" does not match '.
7705: 'current user id "'.$uidhash{$uname}.'".';
7706: }
7707: } else {
7708: &idput($udom,($uname => $uid));
7709: }
7710: }
7711: # -------------------------------------------------------------- Add names, etc
7712: my @tmp=&get('environment',
7713: ['firstname','middlename','lastname','generation','id',
7714: 'permanentemail','inststatus'],
7715: $udom,$uname);
7716: my (%names,%oldnames);
7717: if ($tmp[0] =~ m/^error:.*/) {
7718: %names=();
7719: } else {
7720: %names = @tmp;
7721: %oldnames = %names;
7722: }
7723: #
7724: # If name, email and/or uid are blank (e.g., because an uploaded file
7725: # of users did not contain them), do not overwrite existing values
7726: # unless field is in $candelete array ref.
7727: #
7728:
7729: my @fields = ('firstname','middlename','lastname','generation',
7730: 'permanentemail','id');
7731: my %newvalues;
7732: if (ref($candelete) eq 'ARRAY') {
7733: foreach my $field (@fields) {
7734: if (grep(/^\Q$field\E$/,@{$candelete})) {
7735: if ($field eq 'firstname') {
7736: $names{$field} = $first;
7737: } elsif ($field eq 'middlename') {
7738: $names{$field} = $middle;
7739: } elsif ($field eq 'lastname') {
7740: $names{$field} = $last;
7741: } elsif ($field eq 'generation') {
7742: $names{$field} = $gene;
7743: } elsif ($field eq 'permanentemail') {
7744: $names{$field} = $email;
7745: } elsif ($field eq 'id') {
7746: $names{$field} = $uid;
7747: }
7748: }
7749: }
7750: }
7751: if ($first) { $names{'firstname'} = $first; }
7752: if (defined($middle)) { $names{'middlename'} = $middle; }
7753: if ($last) { $names{'lastname'} = $last; }
7754: if (defined($gene)) { $names{'generation'} = $gene; }
7755: if ($email) {
7756: $email=~s/[^\w\@\.\-\,]//gs;
7757: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
7758: }
7759: if ($uid) { $names{'id'} = $uid; }
7760: if (defined($inststatus)) {
7761: $names{'inststatus'} = '';
7762: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
7763: if (ref($usertypes) eq 'HASH') {
7764: my @okstatuses;
7765: foreach my $item (split(/:/,$inststatus)) {
7766: if (defined($usertypes->{$item})) {
7767: push(@okstatuses,$item);
7768: }
7769: }
7770: if (@okstatuses) {
7771: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
7772: }
7773: }
7774: }
7775: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7776: $umode.', '.$first.', '.$middle.', '.
7777: $last.', '.$gene.', '.$email.', '.$inststatus;
7778: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7779: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7780: } else {
7781: $logmsg .= ' during self creation';
7782: }
7783: my $changed;
7784: if ($newuser) {
7785: $changed = 1;
7786: } else {
7787: foreach my $field (@fields) {
7788: if ($names{$field} ne $oldnames{$field}) {
7789: $changed = 1;
7790: last;
7791: }
7792: }
7793: }
7794: unless ($changed) {
7795: $logmsg = 'No changes in user information needed for: '.$logmsg;
7796: &logthis($logmsg);
7797: return 'ok';
7798: }
7799: my $reply = &put('environment', \%names, $udom,$uname);
7800: if ($reply ne 'ok') {
7801: return 'error: '.$reply;
7802: }
7803: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7804: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7805: }
7806: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7807: &devalidate_cache_new('namescache',$uname.':'.$udom);
7808: $logmsg = 'Success modifying user '.$logmsg;
7809: &logthis($logmsg);
7810: return 'ok';
7811: }
7812:
7813: # -------------------------------------------------------------- Modify student
7814:
7815: sub modifystudent {
7816: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7817: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7818: $selfenroll,$context,$inststatus)=@_;
7819: if (!$cid) {
7820: unless ($cid=$env{'request.course.id'}) {
7821: return 'not_in_class';
7822: }
7823: }
7824: # --------------------------------------------------------------- Make the user
7825: my $reply=&modifyuser
7826: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7827: $desiredhome,$email,$inststatus);
7828: unless ($reply eq 'ok') { return $reply; }
7829: # This will cause &modify_student_enrollment to get the uid from the
7830: # students environment
7831: $uid = undef if (!$forceid);
7832: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7833: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7834: return $reply;
7835: }
7836:
7837: sub modify_student_enrollment {
7838: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7839: my ($cdom,$cnum,$chome);
7840: if (!$cid) {
7841: unless ($cid=$env{'request.course.id'}) {
7842: return 'not_in_class';
7843: }
7844: $cdom=$env{'course.'.$cid.'.domain'};
7845: $cnum=$env{'course.'.$cid.'.num'};
7846: } else {
7847: ($cdom,$cnum)=split(/_/,$cid);
7848: }
7849: $chome=$env{'course.'.$cid.'.home'};
7850: if (!$chome) {
7851: $chome=&homeserver($cnum,$cdom);
7852: }
7853: if (!$chome) { return 'unknown_course'; }
7854: # Make sure the user exists
7855: my $uhome=&homeserver($uname,$udom);
7856: if (($uhome eq '') || ($uhome eq 'no_host')) {
7857: return 'error: no such user';
7858: }
7859: # Get student data if we were not given enough information
7860: if (!defined($first) || $first eq '' ||
7861: !defined($last) || $last eq '' ||
7862: !defined($uid) || $uid eq '' ||
7863: !defined($middle) || $middle eq '' ||
7864: !defined($gene) || $gene eq '') {
7865: # They did not supply us with enough data to enroll the student, so
7866: # we need to pick up more information.
7867: my %tmp = &get('environment',
7868: ['firstname','middlename','lastname', 'generation','id']
7869: ,$udom,$uname);
7870:
7871: #foreach my $key (keys(%tmp)) {
7872: # &logthis("key $key = ".$tmp{$key});
7873: #}
7874: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7875: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7876: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7877: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7878: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7879: }
7880: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7881: my $user = "$uname:$udom";
7882: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
7883: my $reply=cput('classlist',
7884: {$user =>
7885: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7886: $cdom,$cnum);
7887: if (($reply eq 'ok') || ($reply eq 'delayed')) {
7888: &devalidate_getsection_cache($udom,$uname,$cid);
7889: } else {
7890: return 'error: '.$reply;
7891: }
7892: # Add student role to user
7893: my $uurl='/'.$cid;
7894: $uurl=~s/\_/\//g;
7895: if ($usec) {
7896: $uurl.='/'.$usec;
7897: }
7898: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
7899: $selfenroll,$context);
7900: if ($result ne 'ok') {
7901: if ($old_entry{$user} ne '') {
7902: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
7903: } else {
7904: $reply = &del('classlist',[$user],$cdom,$cnum);
7905: }
7906: }
7907: return $result;
7908: }
7909:
7910: sub format_name {
7911: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7912: my $name;
7913: if ($first ne 'lastname') {
7914: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7915: } else {
7916: if ($lastname=~/\S/) {
7917: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7918: $name=~s/\s+,/,/;
7919: } else {
7920: $name.= $firstname.' '.$middlename.' '.$generation;
7921: }
7922: }
7923: $name=~s/^\s+//;
7924: $name=~s/\s+$//;
7925: $name=~s/\s+/ /g;
7926: return $name;
7927: }
7928:
7929: # ------------------------------------------------- Write to course preferences
7930:
7931: sub writecoursepref {
7932: my ($courseid,%prefs)=@_;
7933: $courseid=~s/^\///;
7934: $courseid=~s/\_/\//g;
7935: my ($cdomain,$cnum)=split(/\//,$courseid);
7936: my $chome=homeserver($cnum,$cdomain);
7937: if (($chome eq '') || ($chome eq 'no_host')) {
7938: return 'error: no such course';
7939: }
7940: my $cstring='';
7941: foreach my $pref (keys(%prefs)) {
7942: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7943: }
7944: $cstring=~s/\&$//;
7945: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7946: }
7947:
7948: # ---------------------------------------------------------- Make/modify course
7949:
7950: sub createcourse {
7951: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7952: $course_owner,$crstype,$cnum,$context,$category)=@_;
7953: $url=&declutter($url);
7954: my $cid='';
7955: if ($context eq 'requestcourses') {
7956: my $can_create = 0;
7957: my ($ownername,$ownerdom) = split(':',$course_owner);
7958: if ($udom eq $ownerdom) {
7959: if (&usertools_access($ownername,$ownerdom,$category,undef,
7960: $context)) {
7961: $can_create = 1;
7962: }
7963: } else {
7964: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7965: $category);
7966: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7967: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7968: if (@curr > 0) {
7969: my @options = qw(approval validate autolimit);
7970: my $optregex = join('|',@options);
7971: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7972: $can_create = 1;
7973: }
7974: }
7975: }
7976: }
7977: if ($can_create) {
7978: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7979: unless (&allowed('ccc',$udom)) {
7980: return 'refused';
7981: }
7982: }
7983: } else {
7984: return 'refused';
7985: }
7986: } elsif (!&allowed('ccc',$udom)) {
7987: return 'refused';
7988: }
7989: # --------------------------------------------------------------- Get Unique ID
7990: my $uname;
7991: if ($cnum =~ /^$match_courseid$/) {
7992: my $chome=&homeserver($cnum,$udom,'true');
7993: if (($chome eq '') || ($chome eq 'no_host')) {
7994: $uname = $cnum;
7995: } else {
7996: $uname = &generate_coursenum($udom,$crstype);
7997: }
7998: } else {
7999: $uname = &generate_coursenum($udom,$crstype);
8000: }
8001: return $uname if ($uname =~ /^error/);
8002: # -------------------------------------------------- Check supplied server name
8003: if (!defined($course_server)) {
8004: if (defined(&domain($udom,'primary'))) {
8005: $course_server = &domain($udom,'primary');
8006: } else {
8007: $course_server = $env{'user.home'};
8008: }
8009: }
8010: my %host_servers =
8011: &Apache::lonnet::get_servers($udom,'library');
8012: unless ($host_servers{$course_server}) {
8013: return 'error: invalid home server for course: '.$course_server;
8014: }
8015: # ------------------------------------------------------------- Make the course
8016: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8017: $course_server);
8018: unless ($reply eq 'ok') { return 'error: '.$reply; }
8019: my $uhome=&homeserver($uname,$udom,'true');
8020: if (($uhome eq '') || ($uhome eq 'no_host')) {
8021: return 'error: no such course';
8022: }
8023: # ----------------------------------------------------------------- Course made
8024: # log existence
8025: my $now = time;
8026: my $newcourse = {
8027: $udom.'_'.$uname => {
8028: description => $description,
8029: inst_code => $inst_code,
8030: owner => $course_owner,
8031: type => $crstype,
8032: creator => $env{'user.name'}.':'.
8033: $env{'user.domain'},
8034: created => $now,
8035: context => $context,
8036: },
8037: };
8038: &courseidput($udom,$newcourse,$uhome,'notime');
8039: # set toplevel url
8040: my $topurl=$url;
8041: unless ($nonstandard) {
8042: # ------------------------------------------ For standard courses, make top url
8043: my $mapurl=&clutter($url);
8044: if ($mapurl eq '/res/') { $mapurl=''; }
8045: $env{'form.initmap'}=(<<ENDINITMAP);
8046: <map>
8047: <resource id="1" type="start"></resource>
8048: <resource id="2" src="$mapurl"></resource>
8049: <resource id="3" type="finish"></resource>
8050: <link index="1" from="1" to="2"></link>
8051: <link index="2" from="2" to="3"></link>
8052: </map>
8053: ENDINITMAP
8054: $topurl=&declutter(
8055: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8056: );
8057: }
8058: # ----------------------------------------------------------- Write preferences
8059: &writecoursepref($udom.'_'.$uname,
8060: ('description' => $description,
8061: 'url' => $topurl,
8062: 'internal.creator' => $env{'user.name'}.':'.
8063: $env{'user.domain'},
8064: 'internal.created' => $now,
8065: 'internal.creationcontext' => $context)
8066: );
8067: return '/'.$udom.'/'.$uname;
8068: }
8069:
8070: # ------------------------------------------------------------------- Create ID
8071: sub generate_coursenum {
8072: my ($udom,$crstype) = @_;
8073: my $domdesc = &domain($udom);
8074: return 'error: invalid domain' if ($domdesc eq '');
8075: my $first;
8076: if ($crstype eq 'Community') {
8077: $first = '0';
8078: } else {
8079: $first = int(1+rand(9));
8080: }
8081: my $uname=$first.
8082: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8083: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8084: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8085: # ----------------------------------------------- Make sure that does not exist
8086: my $uhome=&homeserver($uname,$udom,'true');
8087: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8088: if ($crstype eq 'Community') {
8089: $first = '0';
8090: } else {
8091: $first = int(1+rand(9));
8092: }
8093: $uname=$first.
8094: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8095: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8096: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8097: $uhome=&homeserver($uname,$udom,'true');
8098: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8099: return 'error: unable to generate unique course-ID';
8100: }
8101: }
8102: return $uname;
8103: }
8104:
8105: sub is_course {
8106: my ($cdom,$cnum) = @_;
8107: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
8108: undef,'.');
8109: if (exists($courses{$cdom.'_'.$cnum})) {
8110: return 1;
8111: }
8112: return 0;
8113: }
8114:
8115: sub store_userdata {
8116: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8117: my $result;
8118: if ($datakey ne '') {
8119: if (ref($storehash) eq 'HASH') {
8120: if ($udom eq '' || $uname eq '') {
8121: $udom = $env{'user.domain'};
8122: $uname = $env{'user.name'};
8123: }
8124: my $uhome=&homeserver($uname,$udom);
8125: if (($uhome eq '') || ($uhome eq 'no_host')) {
8126: $result = 'error: no_host';
8127: } else {
8128: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8129: $storehash->{'host'} = $perlvar{'lonHostID'};
8130:
8131: my $namevalue='';
8132: foreach my $key (keys(%{$storehash})) {
8133: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8134: }
8135: $namevalue=~s/\&$//;
8136: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8137: $namevalue,$uhome);
8138: }
8139: } else {
8140: $result = 'error: data to store was not a hash reference';
8141: }
8142: } else {
8143: $result= 'error: invalid requestkey';
8144: }
8145: return $result;
8146: }
8147:
8148: # ---------------------------------------------------------- Assign Custom Role
8149:
8150: sub assigncustomrole {
8151: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8152: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8153: $end,$start,$deleteflag,$selfenroll,$context);
8154: }
8155:
8156: # ----------------------------------------------------------------- Revoke Role
8157:
8158: sub revokerole {
8159: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8160: my $now=time;
8161: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8162: }
8163:
8164: # ---------------------------------------------------------- Revoke Custom Role
8165:
8166: sub revokecustomrole {
8167: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8168: my $now=time;
8169: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8170: $deleteflag,$selfenroll,$context);
8171: }
8172:
8173: # ------------------------------------------------------------ Disk usage
8174: sub diskusage {
8175: my ($udom,$uname,$directorypath,$getpropath)=@_;
8176: $directorypath =~ s/\/$//;
8177: my $listing=&reply('du2:'.&escape($directorypath).':'
8178: .&escape($getpropath).':'.&escape($uname).':'
8179: .&escape($udom),homeserver($uname,$udom));
8180: if ($listing eq 'unknown_cmd') {
8181: if ($getpropath) {
8182: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8183: }
8184: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8185: }
8186: return $listing;
8187: }
8188:
8189: sub is_locked {
8190: my ($file_name, $domain, $user, $which) = @_;
8191: my @check;
8192: my $is_locked;
8193: push (@check,$file_name);
8194: my %locked = &get('file_permissions',\@check,
8195: $env{'user.domain'},$env{'user.name'});
8196: my ($tmp)=keys(%locked);
8197: if ($tmp=~/^error:/) { undef(%locked); }
8198:
8199: if (ref($locked{$file_name}) eq 'ARRAY') {
8200: $is_locked = 'false';
8201: foreach my $entry (@{$locked{$file_name}}) {
8202: if (ref($entry) eq 'ARRAY') {
8203: $is_locked = 'true';
8204: if (ref($which) eq 'ARRAY') {
8205: push(@{$which},$entry);
8206: } else {
8207: last;
8208: }
8209: }
8210: }
8211: } else {
8212: $is_locked = 'false';
8213: }
8214: return $is_locked;
8215: }
8216:
8217: sub declutter_portfile {
8218: my ($file) = @_;
8219: $file =~ s{^(/portfolio/|portfolio/)}{/};
8220: return $file;
8221: }
8222:
8223: # ------------------------------------------------------------- Mark as Read Only
8224:
8225: sub mark_as_readonly {
8226: my ($domain,$user,$files,$what) = @_;
8227: my %current_permissions = &dump('file_permissions',$domain,$user);
8228: my ($tmp)=keys(%current_permissions);
8229: if ($tmp=~/^error:/) { undef(%current_permissions); }
8230: foreach my $file (@{$files}) {
8231: $file = &declutter_portfile($file);
8232: push(@{$current_permissions{$file}},$what);
8233: }
8234: &put('file_permissions',\%current_permissions,$domain,$user);
8235: return;
8236: }
8237:
8238: # ------------------------------------------------------------Save Selected Files
8239:
8240: sub save_selected_files {
8241: my ($user, $path, @files) = @_;
8242: my $filename = $user."savedfiles";
8243: my @other_files = &files_not_in_path($user, $path);
8244: open (OUT, '>'.$tmpdir.$filename);
8245: foreach my $file (@files) {
8246: print (OUT $env{'form.currentpath'}.$file."\n");
8247: }
8248: foreach my $file (@other_files) {
8249: print (OUT $file."\n");
8250: }
8251: close (OUT);
8252: return 'ok';
8253: }
8254:
8255: sub clear_selected_files {
8256: my ($user) = @_;
8257: my $filename = $user."savedfiles";
8258: open (OUT, '>'.LONCAPA::tempdir().$filename);
8259: print (OUT undef);
8260: close (OUT);
8261: return ("ok");
8262: }
8263:
8264: sub files_in_path {
8265: my ($user, $path) = @_;
8266: my $filename = $user."savedfiles";
8267: my %return_files;
8268: open (IN, '<'.LONCAPA::tempdir().$filename);
8269: while (my $line_in = <IN>) {
8270: chomp ($line_in);
8271: my @paths_and_file = split (m!/!, $line_in);
8272: my $file_part = pop (@paths_and_file);
8273: my $path_part = join ('/', @paths_and_file);
8274: $path_part.='/';
8275: my $path_and_file = $path_part.$file_part;
8276: if ($path_part eq $path) {
8277: $return_files{$file_part}= 'selected';
8278: }
8279: }
8280: close (IN);
8281: return (\%return_files);
8282: }
8283:
8284: # called in portfolio select mode, to show files selected NOT in current directory
8285: sub files_not_in_path {
8286: my ($user, $path) = @_;
8287: my $filename = $user."savedfiles";
8288: my @return_files;
8289: my $path_part;
8290: open(IN, '<'.LONCAPA::.$filename);
8291: while (my $line = <IN>) {
8292: #ok, I know it's clunky, but I want it to work
8293: my @paths_and_file = split(m|/|, $line);
8294: my $file_part = pop(@paths_and_file);
8295: chomp($file_part);
8296: my $path_part = join('/', @paths_and_file);
8297: $path_part .= '/';
8298: my $path_and_file = $path_part.$file_part;
8299: if ($path_part ne $path) {
8300: push(@return_files, ($path_and_file));
8301: }
8302: }
8303: close(OUT);
8304: return (@return_files);
8305: }
8306:
8307: #----------------------------------------------Get portfolio file permissions
8308:
8309: sub get_portfile_permissions {
8310: my ($domain,$user) = @_;
8311: my %current_permissions = &dump('file_permissions',$domain,$user);
8312: my ($tmp)=keys(%current_permissions);
8313: if ($tmp=~/^error:/) { undef(%current_permissions); }
8314: return \%current_permissions;
8315: }
8316:
8317: #---------------------------------------------Get portfolio file access controls
8318:
8319: sub get_access_controls {
8320: my ($current_permissions,$group,$file) = @_;
8321: my %access;
8322: my $real_file = $file;
8323: $file =~ s/\.meta$//;
8324: if (defined($file)) {
8325: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8326: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8327: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8328: }
8329: }
8330: } else {
8331: foreach my $key (keys(%{$current_permissions})) {
8332: if ($key =~ /\0accesscontrol$/) {
8333: if (defined($group)) {
8334: if ($key !~ m-^\Q$group\E/-) {
8335: next;
8336: }
8337: }
8338: my ($fullpath) = split(/\0/,$key);
8339: if (ref($$current_permissions{$key}) eq 'HASH') {
8340: foreach my $control (keys(%{$$current_permissions{$key}})) {
8341: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8342: }
8343: }
8344: }
8345: }
8346: }
8347: return %access;
8348: }
8349:
8350: sub modify_access_controls {
8351: my ($file_name,$changes,$domain,$user)=@_;
8352: my ($outcome,$deloutcome);
8353: my %store_permissions;
8354: my %new_values;
8355: my %new_control;
8356: my %translation;
8357: my @deletions = ();
8358: my $now = time;
8359: if (exists($$changes{'activate'})) {
8360: if (ref($$changes{'activate'}) eq 'HASH') {
8361: my @newitems = sort(keys(%{$$changes{'activate'}}));
8362: my $numnew = scalar(@newitems);
8363: for (my $i=0; $i<$numnew; $i++) {
8364: my $newkey = $newitems[$i];
8365: my $newid = &Apache::loncommon::get_cgi_id();
8366: if ($newkey =~ /^\d+:/) {
8367: $newkey =~ s/^(\d+)/$newid/;
8368: $translation{$1} = $newid;
8369: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8370: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8371: $translation{$1} = $newid;
8372: }
8373: $new_values{$file_name."\0".$newkey} =
8374: $$changes{'activate'}{$newitems[$i]};
8375: $new_control{$newkey} = $now;
8376: }
8377: }
8378: }
8379: my %todelete;
8380: my %changed_items;
8381: foreach my $action ('delete','update') {
8382: if (exists($$changes{$action})) {
8383: if (ref($$changes{$action}) eq 'HASH') {
8384: foreach my $key (keys(%{$$changes{$action}})) {
8385: my ($itemnum) = ($key =~ /^([^:]+):/);
8386: if ($action eq 'delete') {
8387: $todelete{$itemnum} = 1;
8388: } else {
8389: $changed_items{$itemnum} = $key;
8390: }
8391: }
8392: }
8393: }
8394: }
8395: # get lock on access controls for file.
8396: my $lockhash = {
8397: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8398: ':'.$env{'user.domain'},
8399: };
8400: my $tries = 0;
8401: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8402:
8403: while (($gotlock ne 'ok') && $tries <3) {
8404: $tries ++;
8405: sleep 1;
8406: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8407: }
8408: if ($gotlock eq 'ok') {
8409: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8410: my ($tmp)=keys(%curr_permissions);
8411: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8412: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8413: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8414: if (ref($curr_controls) eq 'HASH') {
8415: foreach my $control_item (keys(%{$curr_controls})) {
8416: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8417: if (defined($todelete{$itemnum})) {
8418: push(@deletions,$file_name."\0".$control_item);
8419: } else {
8420: if (defined($changed_items{$itemnum})) {
8421: $new_control{$changed_items{$itemnum}} = $now;
8422: push(@deletions,$file_name."\0".$control_item);
8423: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8424: } else {
8425: $new_control{$control_item} = $$curr_controls{$control_item};
8426: }
8427: }
8428: }
8429: }
8430: }
8431: my ($group);
8432: if (&is_course($domain,$user)) {
8433: ($group,my $file) = split(/\//,$file_name,2);
8434: }
8435: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8436: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8437: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8438: # remove lock
8439: my @del_lock = ($file_name."\0".'locked_access_records');
8440: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8441: my $sqlresult =
8442: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8443: $group);
8444: } else {
8445: $outcome = "error: could not obtain lockfile\n";
8446: }
8447: return ($outcome,$deloutcome,\%new_values,\%translation);
8448: }
8449:
8450: sub make_public_indefinitely {
8451: my ($requrl) = @_;
8452: my $now = time;
8453: my $action = 'activate';
8454: my $aclnum = 0;
8455: if (&is_portfolio_url($requrl)) {
8456: my (undef,$udom,$unum,$file_name,$group) =
8457: &parse_portfolio_url($requrl);
8458: my $current_perms = &get_portfile_permissions($udom,$unum);
8459: my %access_controls = &get_access_controls($current_perms,
8460: $group,$file_name);
8461: foreach my $key (keys(%{$access_controls{$file_name}})) {
8462: my ($num,$scope,$end,$start) =
8463: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8464: if ($scope eq 'public') {
8465: if ($start <= $now && $end == 0) {
8466: $action = 'none';
8467: } else {
8468: $action = 'update';
8469: $aclnum = $num;
8470: }
8471: last;
8472: }
8473: }
8474: if ($action eq 'none') {
8475: return 'ok';
8476: } else {
8477: my %changes;
8478: my $newend = 0;
8479: my $newstart = $now;
8480: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8481: $changes{$action}{$newkey} = {
8482: type => 'public',
8483: time => {
8484: start => $newstart,
8485: end => $newend,
8486: },
8487: };
8488: my ($outcome,$deloutcome,$new_values,$translation) =
8489: &modify_access_controls($file_name,\%changes,$udom,$unum);
8490: return $outcome;
8491: }
8492: } else {
8493: return 'invalid';
8494: }
8495: }
8496:
8497: #------------------------------------------------------Get Marked as Read Only
8498:
8499: sub get_marked_as_readonly {
8500: my ($domain,$user,$what,$group) = @_;
8501: my $current_permissions = &get_portfile_permissions($domain,$user);
8502: my @readonly_files;
8503: my $cmp1=$what;
8504: if (ref($what)) { $cmp1=join('',@{$what}) };
8505: while (my ($file_name,$value) = each(%{$current_permissions})) {
8506: if (defined($group)) {
8507: if ($file_name !~ m-^\Q$group\E/-) {
8508: next;
8509: }
8510: }
8511: if (ref($value) eq "ARRAY"){
8512: foreach my $stored_what (@{$value}) {
8513: my $cmp2=$stored_what;
8514: if (ref($stored_what) eq 'ARRAY') {
8515: $cmp2=join('',@{$stored_what});
8516: }
8517: if ($cmp1 eq $cmp2) {
8518: push(@readonly_files, $file_name);
8519: last;
8520: } elsif (!defined($what)) {
8521: push(@readonly_files, $file_name);
8522: last;
8523: }
8524: }
8525: }
8526: }
8527: return @readonly_files;
8528: }
8529: #-----------------------------------------------------------Get Marked as Read Only Hash
8530:
8531: sub get_marked_as_readonly_hash {
8532: my ($current_permissions,$group,$what) = @_;
8533: my %readonly_files;
8534: while (my ($file_name,$value) = each(%{$current_permissions})) {
8535: if (defined($group)) {
8536: if ($file_name !~ m-^\Q$group\E/-) {
8537: next;
8538: }
8539: }
8540: if (ref($value) eq "ARRAY"){
8541: foreach my $stored_what (@{$value}) {
8542: if (ref($stored_what) eq 'ARRAY') {
8543: foreach my $lock_descriptor(@{$stored_what}) {
8544: if ($lock_descriptor eq 'graded') {
8545: $readonly_files{$file_name} = 'graded';
8546: } elsif ($lock_descriptor eq 'handback') {
8547: $readonly_files{$file_name} = 'handback';
8548: } else {
8549: if (!exists($readonly_files{$file_name})) {
8550: $readonly_files{$file_name} = 'locked';
8551: }
8552: }
8553: }
8554: }
8555: }
8556: }
8557: }
8558: return %readonly_files;
8559: }
8560: # ------------------------------------------------------------ Unmark as Read Only
8561:
8562: sub unmark_as_readonly {
8563: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8564: # for portfolio submissions, $what contains [$symb,$crsid]
8565: my ($domain,$user,$what,$file_name,$group) = @_;
8566: $file_name = &declutter_portfile($file_name);
8567: my $symb_crs = $what;
8568: if (ref($what)) { $symb_crs=join('',@$what); }
8569: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
8570: my ($tmp)=keys(%current_permissions);
8571: if ($tmp=~/^error:/) { undef(%current_permissions); }
8572: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
8573: foreach my $file (@readonly_files) {
8574: my $clean_file = &declutter_portfile($file);
8575: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
8576: my $current_locks = $current_permissions{$file};
8577: my @new_locks;
8578: my @del_keys;
8579: if (ref($current_locks) eq "ARRAY"){
8580: foreach my $locker (@{$current_locks}) {
8581: my $compare=$locker;
8582: if (ref($locker) eq 'ARRAY') {
8583: $compare=join('',@{$locker});
8584: if ($compare ne $symb_crs) {
8585: push(@new_locks, $locker);
8586: }
8587: }
8588: }
8589: if (scalar(@new_locks) > 0) {
8590: $current_permissions{$file} = \@new_locks;
8591: } else {
8592: push(@del_keys, $file);
8593: &del('file_permissions',\@del_keys, $domain, $user);
8594: delete($current_permissions{$file});
8595: }
8596: }
8597: }
8598: &put('file_permissions',\%current_permissions,$domain,$user);
8599: return;
8600: }
8601:
8602: # ------------------------------------------------------------ Directory lister
8603:
8604: sub dirlist {
8605: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
8606: $uri=~s/^\///;
8607: $uri=~s/\/$//;
8608: my ($udom, $uname);
8609: if ($getuserdir) {
8610: $udom = $userdomain;
8611: $uname = $username;
8612: } else {
8613: (undef,$udom,$uname)=split(/\//,$uri);
8614: if(defined($userdomain)) {
8615: $udom = $userdomain;
8616: }
8617: if(defined($username)) {
8618: $uname = $username;
8619: }
8620: }
8621: my ($dirRoot,$listing,@listing_results);
8622:
8623: $dirRoot = $perlvar{'lonDocRoot'};
8624: if (defined($getpropath)) {
8625: $dirRoot = &propath($udom,$uname);
8626: $dirRoot =~ s/\/$//;
8627: } elsif (defined($getuserdir)) {
8628: my $subdir=$uname.'__';
8629: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
8630: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8631: ."/$udom/$subdir/$uname";
8632: } elsif (defined($alternateRoot)) {
8633: $dirRoot = $alternateRoot;
8634: }
8635:
8636: if($udom) {
8637: if($uname) {
8638: my $uhome = &homeserver($uname,$udom);
8639: if ($uhome eq 'no_host') {
8640: return ([],'no_host');
8641: }
8642: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8643: .$getuserdir.':'.&escape($dirRoot)
8644: .':'.&escape($uname).':'.&escape($udom),$uhome);
8645: if ($listing eq 'unknown_cmd') {
8646: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
8647: } else {
8648: @listing_results = map { &unescape($_); } split(/:/,$listing);
8649: }
8650: if ($listing eq 'unknown_cmd') {
8651: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
8652: @listing_results = split(/:/,$listing);
8653: } else {
8654: @listing_results = map { &unescape($_); } split(/:/,$listing);
8655: }
8656: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8657: ($listing eq 'rejected') || ($listing eq 'refused') ||
8658: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8659: return ([],$listing);
8660: } else {
8661: return (\@listing_results);
8662: }
8663: } elsif(!$alternateRoot) {
8664: my (%allusers,%listerror);
8665: my %servers = &get_servers($udom,'library');
8666: foreach my $tryserver (keys(%servers)) {
8667: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8668: &escape($udom),$tryserver);
8669: if ($listing eq 'unknown_cmd') {
8670: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8671: $udom, $tryserver);
8672: } else {
8673: @listing_results = map { &unescape($_); } split(/:/,$listing);
8674: }
8675: if ($listing eq 'unknown_cmd') {
8676: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8677: $udom, $tryserver);
8678: @listing_results = split(/:/,$listing);
8679: } else {
8680: @listing_results =
8681: map { &unescape($_); } split(/:/,$listing);
8682: }
8683: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8684: ($listing eq 'rejected') || ($listing eq 'refused') ||
8685: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8686: $listerror{$tryserver} = $listing;
8687: } else {
8688: foreach my $line (@listing_results) {
8689: my ($entry) = split(/&/,$line,2);
8690: $allusers{$entry} = 1;
8691: }
8692: }
8693: }
8694: my @alluserslist=();
8695: foreach my $user (sort(keys(%allusers))) {
8696: push(@alluserslist,$user.'&user');
8697: }
8698: return (\@alluserslist);
8699: } else {
8700: return ([],'missing username');
8701: }
8702: } elsif(!defined($getpropath)) {
8703: my $path = $perlvar{'lonDocRoot'}.'/res/';
8704: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
8705: return (\@all_domains);
8706: } else {
8707: return ([],'missing domain');
8708: }
8709: }
8710:
8711: # --------------------------------------------- GetFileTimestamp
8712: # This function utilizes dirlist and returns the date stamp for
8713: # when it was last modified. It will also return an error of -1
8714: # if an error occurs
8715:
8716: sub GetFileTimestamp {
8717: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
8718: $studentDomain = &LONCAPA::clean_domain($studentDomain);
8719: $studentName = &LONCAPA::clean_username($studentName);
8720: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
8721: undef,$getuserdir);
8722: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8723: return -1;
8724: }
8725: if (ref($fileref) eq 'ARRAY') {
8726: my @stats = split('&',$fileref->[0]);
8727: # @stats contains first the filename, then the stat output
8728: return $stats[10]; # so this is 10 instead of 9.
8729: } else {
8730: return -1;
8731: }
8732: }
8733:
8734: sub stat_file {
8735: my ($uri) = @_;
8736: $uri = &clutter_with_no_wrapper($uri);
8737:
8738: my ($udom,$uname,$file);
8739: if ($uri =~ m-^/(uploaded|editupload)/-) {
8740: ($udom,$uname,$file) =
8741: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
8742: $file = 'userfiles/'.$file;
8743: }
8744: if ($uri =~ m-^/res/-) {
8745: ($udom,$uname) =
8746: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
8747: $file = $uri;
8748: }
8749:
8750: if (!$udom || !$uname || !$file) {
8751: # unable to handle the uri
8752: return ();
8753: }
8754: my $getpropath;
8755: if ($file =~ /^userfiles\//) {
8756: $getpropath = 1;
8757: }
8758: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
8759: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8760: return ();
8761: } else {
8762: if (ref($listref) eq 'ARRAY') {
8763: my @stats = split('&',$listref->[0]);
8764: shift(@stats); #filename is first
8765: return @stats;
8766: }
8767: }
8768: return ();
8769: }
8770:
8771: # -------------------------------------------------------- Value of a Condition
8772:
8773: # gets the value of a specific preevaluated condition
8774: # stored in the string $env{user.state.<cid>}
8775: # or looks up a condition reference in the bighash and if if hasn't
8776: # already been evaluated recurses into docondval to get the value of
8777: # the condition, then memoizing it to
8778: # $env{user.state.<cid>.<condition>}
8779: sub directcondval {
8780: my $number=shift;
8781: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
8782: &Apache::lonuserstate::evalstate();
8783: }
8784: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
8785: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
8786: } elsif ($number =~ /^_/) {
8787: my $sub_condition;
8788: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8789: &GDBM_READER(),0640)) {
8790: $sub_condition=$bighash{'conditions'.$number};
8791: untie(%bighash);
8792: }
8793: my $value = &docondval($sub_condition);
8794: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
8795: return $value;
8796: }
8797: if ($env{'user.state.'.$env{'request.course.id'}}) {
8798: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8799: } else {
8800: return 2;
8801: }
8802: }
8803:
8804: # get the collection of conditions for this resource
8805: sub condval {
8806: my $condidx=shift;
8807: my $allpathcond='';
8808: foreach my $cond (split(/\|/,$condidx)) {
8809: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8810: $allpathcond.=
8811: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8812: }
8813: }
8814: $allpathcond=~s/\|$//;
8815: return &docondval($allpathcond);
8816: }
8817:
8818: #evaluates an expression of conditions
8819: sub docondval {
8820: my ($allpathcond) = @_;
8821: my $result=0;
8822: if ($env{'request.course.id'}
8823: && defined($allpathcond)) {
8824: my $operand='|';
8825: my @stack;
8826: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8827: if ($chunk eq '(') {
8828: push @stack,($operand,$result);
8829: } elsif ($chunk eq ')') {
8830: my $before=pop @stack;
8831: if (pop @stack eq '&') {
8832: $result=$result>$before?$before:$result;
8833: } else {
8834: $result=$result>$before?$result:$before;
8835: }
8836: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8837: $operand=$chunk;
8838: } else {
8839: my $new=directcondval($chunk);
8840: if ($operand eq '&') {
8841: $result=$result>$new?$new:$result;
8842: } else {
8843: $result=$result>$new?$result:$new;
8844: }
8845: }
8846: }
8847: }
8848: return $result;
8849: }
8850:
8851: # ---------------------------------------------------- Devalidate courseresdata
8852:
8853: sub devalidatecourseresdata {
8854: my ($coursenum,$coursedomain)=@_;
8855: my $hashid=$coursenum.':'.$coursedomain;
8856: &devalidate_cache_new('courseres',$hashid);
8857: }
8858:
8859:
8860: # --------------------------------------------------- Course Resourcedata Query
8861: #
8862: # Parameters:
8863: # $coursenum - Number of the course.
8864: # $coursedomain - Domain at which the course was created.
8865: # Returns:
8866: # A hash of the course parameters along (I think) with timestamps
8867: # and version info.
8868:
8869: sub get_courseresdata {
8870: my ($coursenum,$coursedomain)=@_;
8871: my $coursehom=&homeserver($coursenum,$coursedomain);
8872: my $hashid=$coursenum.':'.$coursedomain;
8873: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8874: my %dumpreply;
8875: unless (defined($cached)) {
8876: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8877: $result=\%dumpreply;
8878: my ($tmp) = keys(%dumpreply);
8879: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8880: &do_cache_new('courseres',$hashid,$result,600);
8881: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8882: return $tmp;
8883: } elsif ($tmp =~ /^(error)/) {
8884: $result=undef;
8885: &do_cache_new('courseres',$hashid,$result,600);
8886: }
8887: }
8888: return $result;
8889: }
8890:
8891: sub devalidateuserresdata {
8892: my ($uname,$udom)=@_;
8893: my $hashid="$udom:$uname";
8894: &devalidate_cache_new('userres',$hashid);
8895: }
8896:
8897: sub get_userresdata {
8898: my ($uname,$udom)=@_;
8899: #most student don\'t have any data set, check if there is some data
8900: if (&EXT_cache_status($udom,$uname)) { return undef; }
8901:
8902: my $hashid="$udom:$uname";
8903: my ($result,$cached)=&is_cached_new('userres',$hashid);
8904: if (!defined($cached)) {
8905: my %resourcedata=&dump('resourcedata',$udom,$uname);
8906: $result=\%resourcedata;
8907: &do_cache_new('userres',$hashid,$result,600);
8908: }
8909: my ($tmp)=keys(%$result);
8910: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8911: return $result;
8912: }
8913: #error 2 occurs when the .db doesn't exist
8914: if ($tmp!~/error: 2 /) {
8915: &logthis("<font color=\"blue\">WARNING:".
8916: " Trying to get resource data for ".
8917: $uname." at ".$udom.": ".
8918: $tmp."</font>");
8919: } elsif ($tmp=~/error: 2 /) {
8920: #&EXT_cache_set($udom,$uname);
8921: &do_cache_new('userres',$hashid,undef,600);
8922: undef($tmp); # not really an error so don't send it back
8923: }
8924: return $tmp;
8925: }
8926: #----------------------------------------------- resdata - return resource data
8927: # Purpose:
8928: # Return resource data for either users or for a course.
8929: # Parameters:
8930: # $name - Course/user name.
8931: # $domain - Name of the domain the user/course is registered on.
8932: # $type - Type of thing $name is (must be 'course' or 'user'
8933: # @which - Array of names of resources desired.
8934: # Returns:
8935: # The value of the first reasource in @which that is found in the
8936: # resource hash.
8937: # Exceptional Conditions:
8938: # If the $type passed in is not valid (not the string 'course' or
8939: # 'user', an undefined reference is returned.
8940: # If none of the resources are found, an undef is returned
8941: sub resdata {
8942: my ($name,$domain,$type,@which)=@_;
8943: my $result;
8944: if ($type eq 'course') {
8945: $result=&get_courseresdata($name,$domain);
8946: } elsif ($type eq 'user') {
8947: $result=&get_userresdata($name,$domain);
8948: }
8949: if (!ref($result)) { return $result; }
8950: foreach my $item (@which) {
8951: if (defined($result->{$item->[0]})) {
8952: return [$result->{$item->[0]},$item->[1]];
8953: }
8954: }
8955: return undef;
8956: }
8957:
8958: #
8959: # EXT resource caching routines
8960: #
8961:
8962: sub clear_EXT_cache_status {
8963: &delenv('cache.EXT.');
8964: }
8965:
8966: sub EXT_cache_status {
8967: my ($target_domain,$target_user) = @_;
8968: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8969: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8970: # We know already the user has no data
8971: return 1;
8972: } else {
8973: return 0;
8974: }
8975: }
8976:
8977: sub EXT_cache_set {
8978: my ($target_domain,$target_user) = @_;
8979: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8980: #&appenv({$cachename => time});
8981: }
8982:
8983: # --------------------------------------------------------- Value of a Variable
8984: sub EXT {
8985:
8986: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8987: unless ($varname) { return ''; }
8988: #get real user name/domain, courseid and symb
8989: my $courseid;
8990: my $publicuser;
8991: if ($symbparm) {
8992: $symbparm=&get_symb_from_alias($symbparm);
8993: }
8994: if (!($uname && $udom)) {
8995: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8996: if (!$symbparm) { $symbparm=$cursymb; }
8997: } else {
8998: $courseid=$env{'request.course.id'};
8999: }
9000: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9001: my $rest;
9002: if (defined($therest[0])) {
9003: $rest=join('.',@therest);
9004: } else {
9005: $rest='';
9006: }
9007:
9008: my $qualifierrest=$qualifier;
9009: if ($rest) { $qualifierrest.='.'.$rest; }
9010: my $spacequalifierrest=$space;
9011: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9012: if ($realm eq 'user') {
9013: # --------------------------------------------------------------- user.resource
9014: if ($space eq 'resource') {
9015: if ( (defined($Apache::lonhomework::parsing_a_problem)
9016: || defined($Apache::lonhomework::parsing_a_task))
9017: &&
9018: ($symbparm eq &symbread()) ) {
9019: # if we are in the middle of processing the resource the
9020: # get the value we are planning on committing
9021: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9022: return $Apache::lonhomework::results{$qualifierrest};
9023: } else {
9024: return $Apache::lonhomework::history{$qualifierrest};
9025: }
9026: } else {
9027: my %restored;
9028: if ($publicuser || $env{'request.state'} eq 'construct') {
9029: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9030: } else {
9031: %restored=&restore($symbparm,$courseid,$udom,$uname);
9032: }
9033: return $restored{$qualifierrest};
9034: }
9035: # ----------------------------------------------------------------- user.access
9036: } elsif ($space eq 'access') {
9037: # FIXME - not supporting calls for a specific user
9038: return &allowed($qualifier,$rest);
9039: # ------------------------------------------ user.preferences, user.environment
9040: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9041: if (($uname eq $env{'user.name'}) &&
9042: ($udom eq $env{'user.domain'})) {
9043: return $env{join('.',('environment',$qualifierrest))};
9044: } else {
9045: my %returnhash;
9046: if (!$publicuser) {
9047: %returnhash=&userenvironment($udom,$uname,
9048: $qualifierrest);
9049: }
9050: return $returnhash{$qualifierrest};
9051: }
9052: # ----------------------------------------------------------------- user.course
9053: } elsif ($space eq 'course') {
9054: # FIXME - not supporting calls for a specific user
9055: return $env{join('.',('request.course',$qualifier))};
9056: # ------------------------------------------------------------------- user.role
9057: } elsif ($space eq 'role') {
9058: # FIXME - not supporting calls for a specific user
9059: my ($role,$where)=split(/\./,$env{'request.role'});
9060: if ($qualifier eq 'value') {
9061: return $role;
9062: } elsif ($qualifier eq 'extent') {
9063: return $where;
9064: }
9065: # ----------------------------------------------------------------- user.domain
9066: } elsif ($space eq 'domain') {
9067: return $udom;
9068: # ------------------------------------------------------------------- user.name
9069: } elsif ($space eq 'name') {
9070: return $uname;
9071: # ---------------------------------------------------- Any other user namespace
9072: } else {
9073: my %reply;
9074: if (!$publicuser) {
9075: %reply=&get($space,[$qualifierrest],$udom,$uname);
9076: }
9077: return $reply{$qualifierrest};
9078: }
9079: } elsif ($realm eq 'query') {
9080: # ---------------------------------------------- pull stuff out of query string
9081: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9082: [$spacequalifierrest]);
9083: return $env{'form.'.$spacequalifierrest};
9084: } elsif ($realm eq 'request') {
9085: # ------------------------------------------------------------- request.browser
9086: if ($space eq 'browser') {
9087: return $env{'browser.'.$qualifier};
9088: # ------------------------------------------------------------ request.filename
9089: } else {
9090: return $env{'request.'.$spacequalifierrest};
9091: }
9092: } elsif ($realm eq 'course') {
9093: # ---------------------------------------------------------- course.description
9094: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9095: } elsif ($realm eq 'resource') {
9096:
9097: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9098: if (!$symbparm) { $symbparm=&symbread(); }
9099: }
9100:
9101: if ($space eq 'title') {
9102: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9103: return &gettitle($symbparm);
9104: }
9105:
9106: if ($space eq 'map') {
9107: my ($map) = &decode_symb($symbparm);
9108: return &symbread($map);
9109: }
9110: if ($space eq 'filename') {
9111: if ($symbparm) {
9112: return &clutter((&decode_symb($symbparm))[2]);
9113: }
9114: return &hreflocation('',$env{'request.filename'});
9115: }
9116:
9117: my ($section, $group, @groups);
9118: my ($courselevelm,$courselevel);
9119: if ($symbparm && defined($courseid) &&
9120: $courseid eq $env{'request.course.id'}) {
9121:
9122: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9123:
9124: # ----------------------------------------------------- Cascading lookup scheme
9125: my $symbp=$symbparm;
9126: my $mapp=&deversion((&decode_symb($symbp))[0]);
9127:
9128: my $symbparm=$symbp.'.'.$spacequalifierrest;
9129: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9130:
9131: if (($env{'user.name'} eq $uname) &&
9132: ($env{'user.domain'} eq $udom)) {
9133: $section=$env{'request.course.sec'};
9134: @groups = split(/:/,$env{'request.course.groups'});
9135: @groups=&sort_course_groups($courseid,@groups);
9136: } else {
9137: if (! defined($usection)) {
9138: $section=&getsection($udom,$uname,$courseid);
9139: } else {
9140: $section = $usection;
9141: }
9142: @groups = &get_users_groups($udom,$uname,$courseid);
9143: }
9144:
9145: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9146: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9147: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9148:
9149: $courselevel=$courseid.'.'.$spacequalifierrest;
9150: my $courselevelr=$courseid.'.'.$symbparm;
9151: $courselevelm=$courseid.'.'.$mapparm;
9152:
9153: # ----------------------------------------------------------- first, check user
9154:
9155: my $userreply=&resdata($uname,$udom,'user',
9156: ([$courselevelr,'resource'],
9157: [$courselevelm,'map' ],
9158: [$courselevel, 'course' ]));
9159: if (defined($userreply)) { return &get_reply($userreply); }
9160:
9161: # ------------------------------------------------ second, check some of course
9162: my $coursereply;
9163: if (@groups > 0) {
9164: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9165: $mapparm,$spacequalifierrest);
9166: if (defined($coursereply)) { return &get_reply($coursereply); }
9167: }
9168:
9169: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9170: $env{'course.'.$courseid.'.domain'},
9171: 'course',
9172: ([$seclevelr, 'resource'],
9173: [$seclevelm, 'map' ],
9174: [$seclevel, 'course' ],
9175: [$courselevelr,'resource']));
9176: if (defined($coursereply)) { return &get_reply($coursereply); }
9177:
9178: # ------------------------------------------------------ third, check map parms
9179: my %parmhash=();
9180: my $thisparm='';
9181: if (tie(%parmhash,'GDBM_File',
9182: $env{'request.course.fn'}.'_parms.db',
9183: &GDBM_READER(),0640)) {
9184: $thisparm=$parmhash{$symbparm};
9185: untie(%parmhash);
9186: }
9187: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9188: }
9189: # ------------------------------------------ fourth, look in resource metadata
9190:
9191: $spacequalifierrest=~s/\./\_/;
9192: my $filename;
9193: if (!$symbparm) { $symbparm=&symbread(); }
9194: if ($symbparm) {
9195: $filename=(&decode_symb($symbparm))[2];
9196: } else {
9197: $filename=$env{'request.filename'};
9198: }
9199: my $metadata=&metadata($filename,$spacequalifierrest);
9200: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9201: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9202: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9203:
9204: # ---------------------------------------------- fourth, look in rest of course
9205: if ($symbparm && defined($courseid) &&
9206: $courseid eq $env{'request.course.id'}) {
9207: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9208: $env{'course.'.$courseid.'.domain'},
9209: 'course',
9210: ([$courselevelm,'map' ],
9211: [$courselevel, 'course']));
9212: if (defined($coursereply)) { return &get_reply($coursereply); }
9213: }
9214: # ------------------------------------------------------------------ Cascade up
9215: unless ($space eq '0') {
9216: my @parts=split(/_/,$space);
9217: my $id=pop(@parts);
9218: my $part=join('_',@parts);
9219: if ($part eq '') { $part='0'; }
9220: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9221: $symbparm,$udom,$uname,$section,1);
9222: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9223: }
9224: if ($recurse) { return undef; }
9225: my $pack_def=&packages_tab_default($filename,$varname);
9226: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9227: # ---------------------------------------------------- Any other user namespace
9228: } elsif ($realm eq 'environment') {
9229: # ----------------------------------------------------------------- environment
9230: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9231: return $env{'environment.'.$spacequalifierrest};
9232: } else {
9233: if ($uname eq 'anonymous' && $udom eq '') {
9234: return '';
9235: }
9236: my %returnhash=&userenvironment($udom,$uname,
9237: $spacequalifierrest);
9238: return $returnhash{$spacequalifierrest};
9239: }
9240: } elsif ($realm eq 'system') {
9241: # ----------------------------------------------------------------- system.time
9242: if ($space eq 'time') {
9243: return time;
9244: }
9245: } elsif ($realm eq 'server') {
9246: # ----------------------------------------------------------------- system.time
9247: if ($space eq 'name') {
9248: return $ENV{'SERVER_NAME'};
9249: }
9250: }
9251: return '';
9252: }
9253:
9254: sub get_reply {
9255: my ($reply_value) = @_;
9256: if (ref($reply_value) eq 'ARRAY') {
9257: if (wantarray) {
9258: return @$reply_value;
9259: }
9260: return $reply_value->[0];
9261: } else {
9262: return $reply_value;
9263: }
9264: }
9265:
9266: sub check_group_parms {
9267: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9268: my @groupitems = ();
9269: my $resultitem;
9270: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9271: foreach my $group (@{$groups}) {
9272: foreach my $level (@levels) {
9273: my $item = $courseid.'.['.$group.'].'.$level->[0];
9274: push(@groupitems,[$item,$level->[1]]);
9275: }
9276: }
9277: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9278: $env{'course.'.$courseid.'.domain'},
9279: 'course',@groupitems);
9280: return $coursereply;
9281: }
9282:
9283: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9284: my ($courseid,@groups) = @_;
9285: @groups = sort(@groups);
9286: return @groups;
9287: }
9288:
9289: sub packages_tab_default {
9290: my ($uri,$varname)=@_;
9291: my (undef,$part,$name)=split(/\./,$varname);
9292:
9293: my (@extension,@specifics,$do_default);
9294: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9295: my ($pack_type,$pack_part)=split(/_/,$package,2);
9296: if ($pack_type eq 'default') {
9297: $do_default=1;
9298: } elsif ($pack_type eq 'extension') {
9299: push(@extension,[$package,$pack_type,$pack_part]);
9300: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9301: # only look at packages defaults for packages that this id is
9302: push(@specifics,[$package,$pack_type,$pack_part]);
9303: }
9304: }
9305: # first look for a package that matches the requested part id
9306: foreach my $package (@specifics) {
9307: my (undef,$pack_type,$pack_part)=@{$package};
9308: next if ($pack_part ne $part);
9309: if (defined($packagetab{"$pack_type&$name&default"})) {
9310: return $packagetab{"$pack_type&$name&default"};
9311: }
9312: }
9313: # look for any possible matching non extension_ package
9314: foreach my $package (@specifics) {
9315: my (undef,$pack_type,$pack_part)=@{$package};
9316: if (defined($packagetab{"$pack_type&$name&default"})) {
9317: return $packagetab{"$pack_type&$name&default"};
9318: }
9319: if ($pack_type eq 'part') { $pack_part='0'; }
9320: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9321: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9322: }
9323: }
9324: # look for any posible extension_ match
9325: foreach my $package (@extension) {
9326: my ($package,$pack_type)=@{$package};
9327: if (defined($packagetab{"$pack_type&$name&default"})) {
9328: return $packagetab{"$pack_type&$name&default"};
9329: }
9330: if (defined($packagetab{$package."&$name&default"})) {
9331: return $packagetab{$package."&$name&default"};
9332: }
9333: }
9334: # look for a global default setting
9335: if ($do_default && defined($packagetab{"default&$name&default"})) {
9336: return $packagetab{"default&$name&default"};
9337: }
9338: return undef;
9339: }
9340:
9341: sub add_prefix_and_part {
9342: my ($prefix,$part)=@_;
9343: my $keyroot;
9344: if (defined($prefix) && $prefix !~ /^__/) {
9345: # prefix that has a part already
9346: $keyroot=$prefix;
9347: } elsif (defined($prefix)) {
9348: # prefix that is missing a part
9349: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9350: } else {
9351: # no prefix at all
9352: if (defined($part)) { $keyroot='_'.$part; }
9353: }
9354: return $keyroot;
9355: }
9356:
9357: # ---------------------------------------------------------------- Get metadata
9358:
9359: my %metaentry;
9360: my %importedpartids;
9361: sub metadata {
9362: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9363: $uri=&declutter($uri);
9364: # if it is a non metadata possible uri return quickly
9365: if (($uri eq '') ||
9366: (($uri =~ m|^/*adm/|) &&
9367: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9368: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9369: return undef;
9370: }
9371: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9372: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9373: return undef;
9374: }
9375: my $filename=$uri;
9376: $uri=~s/\.meta$//;
9377: #
9378: # Is the metadata already cached?
9379: # Look at timestamp of caching
9380: # Everything is cached by the main uri, libraries are never directly cached
9381: #
9382: if (!defined($liburi)) {
9383: my ($result,$cached)=&is_cached_new('meta',$uri);
9384: if (defined($cached)) { return $result->{':'.$what}; }
9385: }
9386: {
9387: # Imported parts would go here
9388: my %importedids=();
9389: my @origfileimportpartids=();
9390: my $importedparts=0;
9391: #
9392: # Is this a recursive call for a library?
9393: #
9394: # if (! exists($metacache{$uri})) {
9395: # $metacache{$uri}={};
9396: # }
9397: my $cachetime = 60*60;
9398: if ($liburi) {
9399: $liburi=&declutter($liburi);
9400: $filename=$liburi;
9401: } else {
9402: &devalidate_cache_new('meta',$uri);
9403: undef(%metaentry);
9404: }
9405: my %metathesekeys=();
9406: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9407: my $metastring;
9408: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9409: my $which = &hreflocation('','/'.($liburi || $uri));
9410: $metastring =
9411: &Apache::lonnet::ssi_body($which,
9412: ('grade_target' => 'meta'));
9413: $cachetime = 1; # only want this cached in the child not long term
9414: } elsif (($uri !~ m -^(editupload)/-) &&
9415: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9416: my $file=&filelocation('',&clutter($filename));
9417: #push(@{$metaentry{$uri.'.file'}},$file);
9418: $metastring=&getfile($file);
9419: }
9420: my $parser=HTML::LCParser->new(\$metastring);
9421: my $token;
9422: undef %metathesekeys;
9423: while ($token=$parser->get_token) {
9424: if ($token->[0] eq 'S') {
9425: if (defined($token->[2]->{'package'})) {
9426: #
9427: # This is a package - get package info
9428: #
9429: my $package=$token->[2]->{'package'};
9430: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9431: if (defined($token->[2]->{'id'})) {
9432: $keyroot.='_'.$token->[2]->{'id'};
9433: }
9434: if ($metaentry{':packages'}) {
9435: $metaentry{':packages'}.=','.$package.$keyroot;
9436: } else {
9437: $metaentry{':packages'}=$package.$keyroot;
9438: }
9439: foreach my $pack_entry (keys(%packagetab)) {
9440: my $part=$keyroot;
9441: $part=~s/^\_//;
9442: if ($pack_entry=~/^\Q$package\E\&/ ||
9443: $pack_entry=~/^\Q$package\E_0\&/) {
9444: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9445: # ignore package.tab specified default values
9446: # here &package_tab_default() will fetch those
9447: if ($subp eq 'default') { next; }
9448: my $value=$packagetab{$pack_entry};
9449: my $unikey;
9450: if ($pack =~ /_0$/) {
9451: $unikey='parameter_0_'.$name;
9452: $part=0;
9453: } else {
9454: $unikey='parameter'.$keyroot.'_'.$name;
9455: }
9456: if ($subp eq 'display') {
9457: $value.=' [Part: '.$part.']';
9458: }
9459: $metaentry{':'.$unikey.'.part'}=$part;
9460: $metathesekeys{$unikey}=1;
9461: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9462: $metaentry{':'.$unikey.'.'.$subp}=$value;
9463: }
9464: if (defined($metaentry{':'.$unikey.'.default'})) {
9465: $metaentry{':'.$unikey}=
9466: $metaentry{':'.$unikey.'.default'};
9467: }
9468: }
9469: }
9470: } else {
9471: #
9472: # This is not a package - some other kind of start tag
9473: #
9474: my $entry=$token->[1];
9475: my $unikey='';
9476:
9477: if ($entry eq 'import') {
9478: #
9479: # Importing a library here
9480: #
9481: my $location=$parser->get_text('/import');
9482: my $dir=$filename;
9483: $dir=~s|[^/]*$||;
9484: $location=&filelocation($dir,$location);
9485:
9486: my $importmode=$token->[2]->{'importmode'};
9487: if ($importmode eq 'problem') {
9488: # Import as problem/response
9489: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9490: } elsif ($importmode eq 'part') {
9491: # Import as part(s)
9492: $importedparts=1;
9493: # We need to get the original file and the imported file to get the part order correct
9494: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9495: # Load and inspect original file
9496: if ($#origfileimportpartids<0) {
9497: undef(%importedpartids);
9498: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9499: my $origfile=&getfile($origfilelocation);
9500: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9501: }
9502:
9503: # Load and inspect imported file
9504: my $impfile=&getfile($location);
9505: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9506: if ($#impfilepartids>=0) {
9507: # This problem had parts
9508: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9509: } else {
9510: # Importing by turning a single problem into a problem part
9511: # It gets the import-tags ID as part-ID
9512: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9513: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9514: }
9515: } else {
9516: # Normal import
9517: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9518: if (defined($token->[2]->{'id'})) {
9519: $unikey.='_'.$token->[2]->{'id'};
9520: }
9521: }
9522:
9523: if ($depthcount<20) {
9524: my $metadata =
9525: &metadata($uri,'keys', $location,$unikey,
9526: $depthcount+1);
9527: foreach my $meta (split(',',$metadata)) {
9528: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9529: $metathesekeys{$meta}=1;
9530: }
9531:
9532: }
9533: } else {
9534: #
9535: # Not importing, some other kind of non-package, non-library start tag
9536: #
9537: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9538: if (defined($token->[2]->{'id'})) {
9539: $unikey.='_'.$token->[2]->{'id'};
9540: }
9541: if (defined($token->[2]->{'name'})) {
9542: $unikey.='_'.$token->[2]->{'name'};
9543: }
9544: $metathesekeys{$unikey}=1;
9545: foreach my $param (@{$token->[3]}) {
9546: $metaentry{':'.$unikey.'.'.$param} =
9547: $token->[2]->{$param};
9548: }
9549: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9550: my $default=$metaentry{':'.$unikey.'.default'};
9551: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9552: # only ws inside the tag, and not in default, so use default
9553: # as value
9554: $metaentry{':'.$unikey}=$default;
9555: } elsif ( $internaltext =~ /\S/ ) {
9556: # something interesting inside the tag
9557: $metaentry{':'.$unikey}=$internaltext;
9558: } else {
9559: # no interesting values, don't set a default
9560: }
9561: # end of not-a-package not-a-library import
9562: }
9563: # end of not-a-package start tag
9564: }
9565: # the next is the end of "start tag"
9566: }
9567: }
9568: my ($extension) = ($uri =~ /\.(\w+)$/);
9569: $extension = lc($extension);
9570: if ($extension eq 'htm') { $extension='html'; }
9571:
9572: foreach my $key (keys(%packagetab)) {
9573: #no specific packages #how's our extension
9574: if ($key!~/^extension_\Q$extension\E&/) { next; }
9575: &metadata_create_package_def($uri,$key,'extension_'.$extension,
9576: \%metathesekeys);
9577: }
9578:
9579: if (!exists($metaentry{':packages'})
9580: || $packagetab{"import_defaults&extension_$extension"}) {
9581: foreach my $key (keys(%packagetab)) {
9582: #no specific packages well let's get default then
9583: if ($key!~/^default&/) { next; }
9584: &metadata_create_package_def($uri,$key,'default',
9585: \%metathesekeys);
9586: }
9587: }
9588: # are there custom rights to evaluate
9589: if ($metaentry{':copyright'} eq 'custom') {
9590:
9591: #
9592: # Importing a rights file here
9593: #
9594: unless ($depthcount) {
9595: my $location=$metaentry{':customdistributionfile'};
9596: my $dir=$filename;
9597: $dir=~s|[^/]*$||;
9598: $location=&filelocation($dir,$location);
9599: my $rights_metadata =
9600: &metadata($uri,'keys',$location,'_rights',
9601: $depthcount+1);
9602: foreach my $rights (split(',',$rights_metadata)) {
9603: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
9604: $metathesekeys{$rights}=1;
9605: }
9606: }
9607: }
9608: # uniqifiy package listing
9609: my %seen;
9610: my @uniq_packages =
9611: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
9612: $metaentry{':packages'} = join(',',@uniq_packages);
9613:
9614: if ($importedparts) {
9615: # We had imported parts and need to rebuild partorder
9616: $metaentry{':partorder'}='';
9617: $metathesekeys{'partorder'}=1;
9618: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
9619: if ($origfileimportpartids[$index] eq 'part') {
9620: # original part, part of the problem
9621: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
9622: } else {
9623: # we have imported parts at this position
9624: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
9625: }
9626: }
9627: $metaentry{':partorder'}=~s/^\,//;
9628: }
9629:
9630: $metaentry{':keys'} = join(',',keys(%metathesekeys));
9631: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
9632: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
9633: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9634: # this is the end of "was not already recently cached
9635: }
9636: return $metaentry{':'.$what};
9637: }
9638:
9639: sub metadata_create_package_def {
9640: my ($uri,$key,$package,$metathesekeys)=@_;
9641: my ($pack,$name,$subp)=split(/\&/,$key);
9642: if ($subp eq 'default') { next; }
9643:
9644: if (defined($metaentry{':packages'})) {
9645: $metaentry{':packages'}.=','.$package;
9646: } else {
9647: $metaentry{':packages'}=$package;
9648: }
9649: my $value=$packagetab{$key};
9650: my $unikey;
9651: $unikey='parameter_0_'.$name;
9652: $metaentry{':'.$unikey.'.part'}=0;
9653: $$metathesekeys{$unikey}=1;
9654: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9655: $metaentry{':'.$unikey.'.'.$subp}=$value;
9656: }
9657: if (defined($metaentry{':'.$unikey.'.default'})) {
9658: $metaentry{':'.$unikey}=
9659: $metaentry{':'.$unikey.'.default'};
9660: }
9661: }
9662:
9663: sub metadata_generate_part0 {
9664: my ($metadata,$metacache,$uri) = @_;
9665: my %allnames;
9666: foreach my $metakey (keys(%$metadata)) {
9667: if ($metakey=~/^parameter\_(.*)/) {
9668: my $part=$$metacache{':'.$metakey.'.part'};
9669: my $name=$$metacache{':'.$metakey.'.name'};
9670: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9671: $allnames{$name}=$part;
9672: }
9673: }
9674: }
9675: foreach my $name (keys(%allnames)) {
9676: $$metadata{"parameter_0_$name"}=1;
9677: my $key=":parameter_0_$name";
9678: $$metacache{"$key.part"}='0';
9679: $$metacache{"$key.name"}=$name;
9680: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9681: $allnames{$name}.'_'.$name.
9682: '.type'};
9683: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9684: '.display'};
9685: my $expr='[Part: '.$allnames{$name}.']';
9686: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9687: $$metacache{"$key.display"}=$olddis;
9688: }
9689: }
9690:
9691: # ------------------------------------------------------ Devalidate title cache
9692:
9693: sub devalidate_title_cache {
9694: my ($url)=@_;
9695: if (!$env{'request.course.id'}) { return; }
9696: my $symb=&symbread($url);
9697: if (!$symb) { return; }
9698: my $key=$env{'request.course.id'}."\0".$symb;
9699: &devalidate_cache_new('title',$key);
9700: }
9701:
9702: # ------------------------------------------------- Get the title of a course
9703:
9704: sub current_course_title {
9705: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
9706: }
9707: # ------------------------------------------------- Get the title of a resource
9708:
9709: sub gettitle {
9710: my $urlsymb=shift;
9711: my $symb=&symbread($urlsymb);
9712: if ($symb) {
9713: my $key=$env{'request.course.id'}."\0".$symb;
9714: my ($result,$cached)=&is_cached_new('title',$key);
9715: if (defined($cached)) {
9716: return $result;
9717: }
9718: my ($map,$resid,$url)=&decode_symb($symb);
9719: my $title='';
9720: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
9721: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
9722: } else {
9723: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9724: &GDBM_READER(),0640)) {
9725: my $mapid=$bighash{'map_pc_'.&clutter($map)};
9726: $title=$bighash{'title_'.$mapid.'.'.$resid};
9727: untie(%bighash);
9728: }
9729: }
9730: $title=~s/\&colon\;/\:/gs;
9731: if ($title) {
9732: # Remember both $symb and $title for dynamic metadata
9733: $accesshash{$symb.'___crstitle'}=$title;
9734: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
9735: # Cache this title and then return it
9736: return &do_cache_new('title',$key,$title,600);
9737: }
9738: $urlsymb=$url;
9739: }
9740: my $title=&metadata($urlsymb,'title');
9741: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
9742: return $title;
9743: }
9744:
9745: sub get_slot {
9746: my ($which,$cnum,$cdom)=@_;
9747: if (!$cnum || !$cdom) {
9748: (undef,my $courseid)=&whichuser();
9749: $cdom=$env{'course.'.$courseid.'.domain'};
9750: $cnum=$env{'course.'.$courseid.'.num'};
9751: }
9752: my $key=join("\0",'slots',$cdom,$cnum,$which);
9753: my %slotinfo;
9754: if (exists($remembered{$key})) {
9755: $slotinfo{$which} = $remembered{$key};
9756: } else {
9757: %slotinfo=&get('slots',[$which],$cdom,$cnum);
9758: &Apache::lonhomework::showhash(%slotinfo);
9759: my ($tmp)=keys(%slotinfo);
9760: if ($tmp=~/^error:/) { return (); }
9761: $remembered{$key} = $slotinfo{$which};
9762: }
9763: if (ref($slotinfo{$which}) eq 'HASH') {
9764: return %{$slotinfo{$which}};
9765: }
9766: return $slotinfo{$which};
9767: }
9768:
9769: sub get_reservable_slots {
9770: my ($cnum,$cdom,$uname,$udom) = @_;
9771: my $now = time;
9772: my $reservable_info;
9773: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
9774: if (exists($remembered{$key})) {
9775: $reservable_info = $remembered{$key};
9776: } else {
9777: my %resv;
9778: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
9779: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
9780: $reservable_info = \%resv;
9781: $remembered{$key} = $reservable_info;
9782: }
9783: return $reservable_info;
9784: }
9785:
9786: sub get_course_slots {
9787: my ($cnum,$cdom) = @_;
9788: my $hashid=$cnum.':'.$cdom;
9789: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
9790: if (defined($cached)) {
9791: if (ref($result) eq 'HASH') {
9792: return %{$result};
9793: }
9794: } else {
9795: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
9796: my ($tmp) = keys(%slots);
9797: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9798: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
9799: return %slots;
9800: }
9801: }
9802: return;
9803: }
9804:
9805: sub devalidate_slots_cache {
9806: my ($cnum,$cdom)=@_;
9807: my $hashid=$cnum.':'.$cdom;
9808: &devalidate_cache_new('allslots',$hashid);
9809: }
9810:
9811: # ------------------------------------------------- Update symbolic store links
9812:
9813: sub symblist {
9814: my ($mapname,%newhash)=@_;
9815: $mapname=&deversion(&declutter($mapname));
9816: my %hash;
9817: if (($env{'request.course.fn'}) && (%newhash)) {
9818: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9819: &GDBM_WRCREAT(),0640)) {
9820: foreach my $url (keys(%newhash)) {
9821: next if ($url eq 'last_known'
9822: && $env{'form.no_update_last_known'});
9823: $hash{declutter($url)}=&encode_symb($mapname,
9824: $newhash{$url}->[1],
9825: $newhash{$url}->[0]);
9826: }
9827: if (untie(%hash)) {
9828: return 'ok';
9829: }
9830: }
9831: }
9832: return 'error';
9833: }
9834:
9835: # --------------------------------------------------------------- Verify a symb
9836:
9837: sub symbverify {
9838: my ($symb,$thisurl)=@_;
9839: my $thisfn=$thisurl;
9840: $thisfn=&declutter($thisfn);
9841: # direct jump to resource in page or to a sequence - will construct own symbs
9842: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
9843: # check URL part
9844: my ($map,$resid,$url)=&decode_symb($symb);
9845:
9846: unless ($url eq $thisfn) { return 0; }
9847:
9848: $symb=&symbclean($symb);
9849: $thisurl=&deversion($thisurl);
9850: $thisfn=&deversion($thisfn);
9851:
9852: my %bighash;
9853: my $okay=0;
9854:
9855: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9856: &GDBM_READER(),0640)) {
9857: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9858: $thisurl =~ s/\?.+$//;
9859: }
9860: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9861: unless ($ids) {
9862: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9863: $ids=$bighash{$idkey};
9864: }
9865: if ($ids) {
9866: # ------------------------------------------------------------------- Has ID(s)
9867: foreach my $id (split(/\,/,$ids)) {
9868: my ($mapid,$resid)=split(/\./,$id);
9869: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9870: $symb =~ s/\?.+$//;
9871: }
9872: if (
9873: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9874: eq $symb) {
9875: if (($env{'request.role.adv'}) ||
9876: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9877: ($thisurl eq '/adm/navmaps')) {
9878: $okay=1;
9879: }
9880: }
9881: }
9882: }
9883: untie(%bighash);
9884: }
9885: return $okay;
9886: }
9887:
9888: # --------------------------------------------------------------- Clean-up symb
9889:
9890: sub symbclean {
9891: my $symb=shift;
9892: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9893: # remove version from map
9894: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9895:
9896: # remove version from URL
9897: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9898:
9899: # remove wrapper
9900:
9901: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9902: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9903: return $symb;
9904: }
9905:
9906: # ---------------------------------------------- Split symb to find map and url
9907:
9908: sub encode_symb {
9909: my ($map,$resid,$url)=@_;
9910: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9911: }
9912:
9913: sub decode_symb {
9914: my $symb=shift;
9915: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9916: my ($map,$resid,$url)=split(/___/,$symb);
9917: return (&fixversion($map),$resid,&fixversion($url));
9918: }
9919:
9920: sub fixversion {
9921: my $fn=shift;
9922: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9923: my %bighash;
9924: my $uri=&clutter($fn);
9925: my $key=$env{'request.course.id'}.'_'.$uri;
9926: # is this cached?
9927: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9928: if (defined($cached)) { return $result; }
9929: # unfortunately not cached, or expired
9930: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9931: &GDBM_READER(),0640)) {
9932: if ($bighash{'version_'.$uri}) {
9933: my $version=$bighash{'version_'.$uri};
9934: unless (($version eq 'mostrecent') ||
9935: ($version==&getversion($uri))) {
9936: $uri=~s/\.(\w+)$/\.$version\.$1/;
9937: }
9938: }
9939: untie %bighash;
9940: }
9941: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9942: }
9943:
9944: sub deversion {
9945: my $url=shift;
9946: $url=~s/\.\d+\.(\w+)$/\.$1/;
9947: return $url;
9948: }
9949:
9950: # ------------------------------------------------------ Return symb list entry
9951:
9952: sub symbread {
9953: my ($thisfn,$donotrecurse)=@_;
9954: my $cache_str='request.symbread.cached.'.$thisfn;
9955: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9956: # no filename provided? try from environment
9957: unless ($thisfn) {
9958: if ($env{'request.symb'}) {
9959: return $env{$cache_str}=&symbclean($env{'request.symb'});
9960: }
9961: $thisfn=$env{'request.filename'};
9962: }
9963: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9964: # is that filename actually a symb? Verify, clean, and return
9965: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9966: if (&symbverify($thisfn,$1)) {
9967: return $env{$cache_str}=&symbclean($thisfn);
9968: }
9969: }
9970: $thisfn=declutter($thisfn);
9971: my %hash;
9972: my %bighash;
9973: my $syval='';
9974: if (($env{'request.course.fn'}) && ($thisfn)) {
9975: my $targetfn = $thisfn;
9976: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9977: $targetfn = 'adm/wrapper/'.$thisfn;
9978: }
9979: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9980: $targetfn=$1;
9981: }
9982: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9983: &GDBM_READER(),0640)) {
9984: $syval=$hash{$targetfn};
9985: untie(%hash);
9986: }
9987: # ---------------------------------------------------------- There was an entry
9988: if ($syval) {
9989: #unless ($syval=~/\_\d+$/) {
9990: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9991: #&appenv({'request.ambiguous' => $thisfn});
9992: #return $env{$cache_str}='';
9993: #}
9994: #$syval.=$1;
9995: #}
9996: } else {
9997: # ------------------------------------------------------- Was not in symb table
9998: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9999: &GDBM_READER(),0640)) {
10000: # ---------------------------------------------- Get ID(s) for current resource
10001: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10002: unless ($ids) {
10003: $ids=$bighash{'ids_/'.$thisfn};
10004: }
10005: unless ($ids) {
10006: # alias?
10007: $ids=$bighash{'mapalias_'.$thisfn};
10008: }
10009: if ($ids) {
10010: # ------------------------------------------------------------------- Has ID(s)
10011: my @possibilities=split(/\,/,$ids);
10012: if ($#possibilities==0) {
10013: # ----------------------------------------------- There is only one possibility
10014: my ($mapid,$resid)=split(/\./,$ids);
10015: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10016: $resid,$thisfn);
10017: } elsif (!$donotrecurse) {
10018: # ------------------------------------------ There is more than one possibility
10019: my $realpossible=0;
10020: foreach my $id (@possibilities) {
10021: my $file=$bighash{'src_'.$id};
10022: if (&allowed('bre',$file)) {
10023: my ($mapid,$resid)=split(/\./,$id);
10024: if ($bighash{'map_type_'.$mapid} ne 'page') {
10025: $realpossible++;
10026: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10027: $resid,$thisfn);
10028: }
10029: }
10030: }
10031: if ($realpossible!=1) { $syval=''; }
10032: } else {
10033: $syval='';
10034: }
10035: }
10036: untie(%bighash)
10037: }
10038: }
10039: if ($syval) {
10040: return $env{$cache_str}=$syval;
10041: }
10042: }
10043: &appenv({'request.ambiguous' => $thisfn});
10044: return $env{$cache_str}='';
10045: }
10046:
10047: # ---------------------------------------------------------- Return random seed
10048:
10049: sub numval {
10050: my $txt=shift;
10051: $txt=~tr/A-J/0-9/;
10052: $txt=~tr/a-j/0-9/;
10053: $txt=~tr/K-T/0-9/;
10054: $txt=~tr/k-t/0-9/;
10055: $txt=~tr/U-Z/0-5/;
10056: $txt=~tr/u-z/0-5/;
10057: $txt=~s/\D//g;
10058: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10059: return int($txt);
10060: }
10061:
10062: sub numval2 {
10063: my $txt=shift;
10064: $txt=~tr/A-J/0-9/;
10065: $txt=~tr/a-j/0-9/;
10066: $txt=~tr/K-T/0-9/;
10067: $txt=~tr/k-t/0-9/;
10068: $txt=~tr/U-Z/0-5/;
10069: $txt=~tr/u-z/0-5/;
10070: $txt=~s/\D//g;
10071: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10072: my $total;
10073: foreach my $val (@txts) { $total+=$val; }
10074: if ($_64bit) { if ($total > 2**32) { return -1; } }
10075: return int($total);
10076: }
10077:
10078: sub numval3 {
10079: use integer;
10080: my $txt=shift;
10081: $txt=~tr/A-J/0-9/;
10082: $txt=~tr/a-j/0-9/;
10083: $txt=~tr/K-T/0-9/;
10084: $txt=~tr/k-t/0-9/;
10085: $txt=~tr/U-Z/0-5/;
10086: $txt=~tr/u-z/0-5/;
10087: $txt=~s/\D//g;
10088: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10089: my $total;
10090: foreach my $val (@txts) { $total+=$val; }
10091: if ($_64bit) { $total=(($total<<32)>>32); }
10092: return $total;
10093: }
10094:
10095: sub digest {
10096: my ($data)=@_;
10097: my $digest=&Digest::MD5::md5($data);
10098: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10099: my ($e,$f);
10100: {
10101: use integer;
10102: $e=($a+$b);
10103: $f=($c+$d);
10104: if ($_64bit) {
10105: $e=(($e<<32)>>32);
10106: $f=(($f<<32)>>32);
10107: }
10108: }
10109: if (wantarray) {
10110: return ($e,$f);
10111: } else {
10112: my $g;
10113: {
10114: use integer;
10115: $g=($e+$f);
10116: if ($_64bit) {
10117: $g=(($g<<32)>>32);
10118: }
10119: }
10120: return $g;
10121: }
10122: }
10123:
10124: sub latest_rnd_algorithm_id {
10125: return '64bit5';
10126: }
10127:
10128: sub get_rand_alg {
10129: my ($courseid)=@_;
10130: if (!$courseid) { $courseid=(&whichuser())[1]; }
10131: if ($courseid) {
10132: return $env{"course.$courseid.rndseed"};
10133: }
10134: return &latest_rnd_algorithm_id();
10135: }
10136:
10137: sub validCODE {
10138: my ($CODE)=@_;
10139: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10140: return 0;
10141: }
10142:
10143: sub getCODE {
10144: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10145: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10146: defined($Apache::lonhomework::parsing_a_task) ) &&
10147: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10148: return $Apache::lonhomework::history{'resource.CODE'};
10149: }
10150: return undef;
10151: }
10152: #
10153: # Determines the random seed for a specific context:
10154: #
10155: # parameters:
10156: # symb - in course context the symb for the seed.
10157: # course_id - The course id of the form domain_coursenum.
10158: # domain - Domain for the user.
10159: # course - Course for the user.
10160: # cenv - environment of the course.
10161: #
10162: # NOTE:
10163: # All parameters are picked out of the environment if missing
10164: # or not defined.
10165: # If a symb cannot be determined the current time is used instead.
10166: #
10167: # For a given well defined symb, courside, domain, username,
10168: # and course environment, the seed is reproducible.
10169: #
10170: sub rndseed {
10171: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10172: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10173: if (!defined($symb)) {
10174: unless ($symb=$wsymb) { return time; }
10175: }
10176: if (!defined $courseid) {
10177: $courseid=$wcourseid;
10178: }
10179: if (!defined $domain) { $domain=$wdomain; }
10180: if (!defined $username) { $username=$wusername }
10181:
10182: my $which;
10183: if (defined($cenv->{'rndseed'})) {
10184: $which = $cenv->{'rndseed'};
10185: } else {
10186: $which =&get_rand_alg($courseid);
10187: }
10188: if (defined(&getCODE())) {
10189:
10190: if ($which eq '64bit5') {
10191: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10192: } elsif ($which eq '64bit4') {
10193: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10194: } else {
10195: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10196: }
10197: } elsif ($which eq '64bit5') {
10198: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10199: } elsif ($which eq '64bit4') {
10200: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10201: } elsif ($which eq '64bit3') {
10202: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10203: } elsif ($which eq '64bit2') {
10204: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10205: } elsif ($which eq '64bit') {
10206: return &rndseed_64bit($symb,$courseid,$domain,$username);
10207: }
10208: return &rndseed_32bit($symb,$courseid,$domain,$username);
10209: }
10210:
10211: sub rndseed_32bit {
10212: my ($symb,$courseid,$domain,$username)=@_;
10213: {
10214: use integer;
10215: my $symbchck=unpack("%32C*",$symb) << 27;
10216: my $symbseed=numval($symb) << 22;
10217: my $namechck=unpack("%32C*",$username) << 17;
10218: my $nameseed=numval($username) << 12;
10219: my $domainseed=unpack("%32C*",$domain) << 7;
10220: my $courseseed=unpack("%32C*",$courseid);
10221: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10222: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10223: #&logthis("rndseed :$num:$symb");
10224: if ($_64bit) { $num=(($num<<32)>>32); }
10225: return $num;
10226: }
10227: }
10228:
10229: sub rndseed_64bit {
10230: my ($symb,$courseid,$domain,$username)=@_;
10231: {
10232: use integer;
10233: my $symbchck=unpack("%32S*",$symb) << 21;
10234: my $symbseed=numval($symb) << 10;
10235: my $namechck=unpack("%32S*",$username);
10236:
10237: my $nameseed=numval($username) << 21;
10238: my $domainseed=unpack("%32S*",$domain) << 10;
10239: my $courseseed=unpack("%32S*",$courseid);
10240:
10241: my $num1=$symbchck+$symbseed+$namechck;
10242: my $num2=$nameseed+$domainseed+$courseseed;
10243: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10244: #&logthis("rndseed :$num:$symb");
10245: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10246: return "$num1,$num2";
10247: }
10248: }
10249:
10250: sub rndseed_64bit2 {
10251: my ($symb,$courseid,$domain,$username)=@_;
10252: {
10253: use integer;
10254: # strings need to be an even # of cahracters long, it it is odd the
10255: # last characters gets thrown away
10256: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10257: my $symbseed=numval($symb) << 10;
10258: my $namechck=unpack("%32S*",$username.' ');
10259:
10260: my $nameseed=numval($username) << 21;
10261: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10262: my $courseseed=unpack("%32S*",$courseid.' ');
10263:
10264: my $num1=$symbchck+$symbseed+$namechck;
10265: my $num2=$nameseed+$domainseed+$courseseed;
10266: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10267: #&logthis("rndseed :$num:$symb");
10268: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10269: return "$num1,$num2";
10270: }
10271: }
10272:
10273: sub rndseed_64bit3 {
10274: my ($symb,$courseid,$domain,$username)=@_;
10275: {
10276: use integer;
10277: # strings need to be an even # of cahracters long, it it is odd the
10278: # last characters gets thrown away
10279: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10280: my $symbseed=numval2($symb) << 10;
10281: my $namechck=unpack("%32S*",$username.' ');
10282:
10283: my $nameseed=numval2($username) << 21;
10284: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10285: my $courseseed=unpack("%32S*",$courseid.' ');
10286:
10287: my $num1=$symbchck+$symbseed+$namechck;
10288: my $num2=$nameseed+$domainseed+$courseseed;
10289: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10290: #&logthis("rndseed :$num1:$num2:$_64bit");
10291: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10292:
10293: return "$num1:$num2";
10294: }
10295: }
10296:
10297: sub rndseed_64bit4 {
10298: my ($symb,$courseid,$domain,$username)=@_;
10299: {
10300: use integer;
10301: # strings need to be an even # of cahracters long, it it is odd the
10302: # last characters gets thrown away
10303: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10304: my $symbseed=numval3($symb) << 10;
10305: my $namechck=unpack("%32S*",$username.' ');
10306:
10307: my $nameseed=numval3($username) << 21;
10308: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10309: my $courseseed=unpack("%32S*",$courseid.' ');
10310:
10311: my $num1=$symbchck+$symbseed+$namechck;
10312: my $num2=$nameseed+$domainseed+$courseseed;
10313: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10314: #&logthis("rndseed :$num1:$num2:$_64bit");
10315: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10316:
10317: return "$num1:$num2";
10318: }
10319: }
10320:
10321: sub rndseed_64bit5 {
10322: my ($symb,$courseid,$domain,$username)=@_;
10323: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10324: return "$num1:$num2";
10325: }
10326:
10327: sub rndseed_CODE_64bit {
10328: my ($symb,$courseid,$domain,$username)=@_;
10329: {
10330: use integer;
10331: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10332: my $symbseed=numval2($symb);
10333: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10334: my $CODEseed=numval(&getCODE());
10335: my $courseseed=unpack("%32S*",$courseid.' ');
10336: my $num1=$symbseed+$CODEchck;
10337: my $num2=$CODEseed+$courseseed+$symbchck;
10338: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10339: #&logthis("rndseed :$num1:$num2:$symb");
10340: if ($_64bit) { $num1=(($num1<<32)>>32); }
10341: if ($_64bit) { $num2=(($num2<<32)>>32); }
10342: return "$num1:$num2";
10343: }
10344: }
10345:
10346: sub rndseed_CODE_64bit4 {
10347: my ($symb,$courseid,$domain,$username)=@_;
10348: {
10349: use integer;
10350: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10351: my $symbseed=numval3($symb);
10352: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10353: my $CODEseed=numval3(&getCODE());
10354: my $courseseed=unpack("%32S*",$courseid.' ');
10355: my $num1=$symbseed+$CODEchck;
10356: my $num2=$CODEseed+$courseseed+$symbchck;
10357: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10358: #&logthis("rndseed :$num1:$num2:$symb");
10359: if ($_64bit) { $num1=(($num1<<32)>>32); }
10360: if ($_64bit) { $num2=(($num2<<32)>>32); }
10361: return "$num1:$num2";
10362: }
10363: }
10364:
10365: sub rndseed_CODE_64bit5 {
10366: my ($symb,$courseid,$domain,$username)=@_;
10367: my $code = &getCODE();
10368: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10369: return "$num1:$num2";
10370: }
10371:
10372: sub setup_random_from_rndseed {
10373: my ($rndseed)=@_;
10374: if ($rndseed =~/([,:])/) {
10375: my ($num1,$num2)=split(/[,:]/,$rndseed);
10376: &Math::Random::random_set_seed(abs($num1),abs($num2));
10377: } else {
10378: &Math::Random::random_set_seed_from_phrase($rndseed);
10379: }
10380: }
10381:
10382: sub latest_receipt_algorithm_id {
10383: return 'receipt3';
10384: }
10385:
10386: sub recunique {
10387: my $fucourseid=shift;
10388: my $unique;
10389: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10390: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10391: $unique=$env{"course.$fucourseid.internal.encseed"};
10392: } else {
10393: $unique=$perlvar{'lonReceipt'};
10394: }
10395: return unpack("%32C*",$unique);
10396: }
10397:
10398: sub recprefix {
10399: my $fucourseid=shift;
10400: my $prefix;
10401: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10402: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10403: $prefix=$env{"course.$fucourseid.internal.encpref"};
10404: } else {
10405: $prefix=$perlvar{'lonHostID'};
10406: }
10407: return unpack("%32C*",$prefix);
10408: }
10409:
10410: sub ireceipt {
10411: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10412:
10413: my $return =&recprefix($fucourseid).'-';
10414:
10415: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10416: $env{'request.state'} eq 'construct') {
10417: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10418: return $return;
10419: }
10420:
10421: my $cuname=unpack("%32C*",$funame);
10422: my $cudom=unpack("%32C*",$fudom);
10423: my $cucourseid=unpack("%32C*",$fucourseid);
10424: my $cusymb=unpack("%32C*",$fusymb);
10425: my $cunique=&recunique($fucourseid);
10426: my $cpart=unpack("%32S*",$part);
10427: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10428:
10429: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10430:
10431: $return.= ($cunique%$cuname+
10432: $cunique%$cudom+
10433: $cusymb%$cuname+
10434: $cusymb%$cudom+
10435: $cucourseid%$cuname+
10436: $cucourseid%$cudom+
10437: $cpart%$cuname+
10438: $cpart%$cudom);
10439: } else {
10440: $return.= ($cunique%$cuname+
10441: $cunique%$cudom+
10442: $cusymb%$cuname+
10443: $cusymb%$cudom+
10444: $cucourseid%$cuname+
10445: $cucourseid%$cudom);
10446: }
10447: return $return;
10448: }
10449:
10450: sub receipt {
10451: my ($part)=@_;
10452: my ($symb,$courseid,$domain,$name) = &whichuser();
10453: return &ireceipt($name,$domain,$courseid,$symb,$part);
10454: }
10455:
10456: sub whichuser {
10457: my ($passedsymb)=@_;
10458: my ($symb,$courseid,$domain,$name,$publicuser);
10459: if (defined($env{'form.grade_symb'})) {
10460: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10461: my $allowed=&allowed('vgr',$tmp_courseid);
10462: if (!$allowed &&
10463: exists($env{'request.course.sec'}) &&
10464: $env{'request.course.sec'} !~ /^\s*$/) {
10465: $allowed=&allowed('vgr',$tmp_courseid.
10466: '/'.$env{'request.course.sec'});
10467: }
10468: if ($allowed) {
10469: ($symb)=&get_env_multiple('form.grade_symb');
10470: $courseid=$tmp_courseid;
10471: ($domain)=&get_env_multiple('form.grade_domain');
10472: ($name)=&get_env_multiple('form.grade_username');
10473: return ($symb,$courseid,$domain,$name,$publicuser);
10474: }
10475: }
10476: if (!$passedsymb) {
10477: $symb=&symbread();
10478: } else {
10479: $symb=$passedsymb;
10480: }
10481: $courseid=$env{'request.course.id'};
10482: $domain=$env{'user.domain'};
10483: $name=$env{'user.name'};
10484: if ($name eq 'public' && $domain eq 'public') {
10485: if (!defined($env{'form.username'})) {
10486: $env{'form.username'}.=time.rand(10000000);
10487: }
10488: $name.=$env{'form.username'};
10489: }
10490: return ($symb,$courseid,$domain,$name,$publicuser);
10491:
10492: }
10493:
10494: # ------------------------------------------------------------ Serves up a file
10495: # returns either the contents of the file or
10496: # -1 if the file doesn't exist
10497: #
10498: # if the target is a file that was uploaded via DOCS,
10499: # a check will be made to see if a current copy exists on the local server,
10500: # if it does this will be served, otherwise a copy will be retrieved from
10501: # the home server for the course and stored in /home/httpd/html/userfiles on
10502: # the local server.
10503:
10504: sub getfile {
10505: my ($file) = @_;
10506: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10507: &repcopy($file);
10508: return &readfile($file);
10509: }
10510:
10511: sub repcopy_userfile {
10512: my ($file)=@_;
10513: my $londocroot = $perlvar{'lonDocRoot'};
10514: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10515: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10516: my ($cdom,$cnum,$filename) =
10517: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10518: my $uri="/uploaded/$cdom/$cnum/$filename";
10519: if (-e "$file") {
10520: # we already have a local copy, check it out
10521: my @fileinfo = stat($file);
10522: my $rtncode;
10523: my $info;
10524: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
10525: if ($lwpresp ne 'ok') {
10526: # there is no such file anymore, even though we had a local copy
10527: if ($rtncode eq '404') {
10528: unlink($file);
10529: }
10530: return -1;
10531: }
10532: if ($info < $fileinfo[9]) {
10533: # nice, the file we have is up-to-date, just say okay
10534: return 'ok';
10535: } else {
10536: # the file is outdated, get rid of it
10537: unlink($file);
10538: }
10539: }
10540: # one way or the other, at this point, we don't have the file
10541: # construct the correct path for the file
10542: my @parts = ($cdom,$cnum);
10543: if ($filename =~ m|^(.+)/[^/]+$|) {
10544: push @parts, split(/\//,$1);
10545: }
10546: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
10547: foreach my $part (@parts) {
10548: $path .= '/'.$part;
10549: if (!-e $path) {
10550: mkdir($path,0770);
10551: }
10552: }
10553: # now the path exists for sure
10554: # get a user agent
10555: my $ua=new LWP::UserAgent;
10556: my $transferfile=$file.'.in.transfer';
10557: # FIXME: this should flock
10558: if (-e $transferfile) { return 'ok'; }
10559: my $request;
10560: $uri=~s/^\///;
10561: my $homeserver = &homeserver($cnum,$cdom);
10562: my $protocol = $protocol{$homeserver};
10563: $protocol = 'http' if ($protocol ne 'https');
10564: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
10565: my $response=$ua->request($request,$transferfile);
10566: # did it work?
10567: if ($response->is_error()) {
10568: unlink($transferfile);
10569: &logthis("Userfile repcopy failed for $uri");
10570: return -1;
10571: }
10572: # worked, rename the transfer file
10573: rename($transferfile,$file);
10574: return 'ok';
10575: }
10576:
10577: sub tokenwrapper {
10578: my $uri=shift;
10579: $uri=~s|^https?\://([^/]+)||;
10580: $uri=~s|^/||;
10581: $env{'user.environment'}=~/\/([^\/]+)\.id/;
10582: my $token=$1;
10583: my (undef,$udom,$uname,$file)=split('/',$uri,4);
10584: if ($udom && $uname && $file) {
10585: $file=~s|(\?\.*)*$||;
10586: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
10587: my $homeserver = &homeserver($uname,$udom);
10588: my $protocol = $protocol{$homeserver};
10589: $protocol = 'http' if ($protocol ne 'https');
10590: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
10591: (($uri=~/\?/)?'&':'?').'token='.$token.
10592: '&tokenissued='.$perlvar{'lonHostID'};
10593: } else {
10594: return '/adm/notfound.html';
10595: }
10596: }
10597:
10598: # call with reqtype HEAD: get last modification time
10599: # call with reqtype GET: get the file contents
10600: # Do not call this with reqtype GET for large files! It loads everything into memory
10601: #
10602: sub getuploaded {
10603: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
10604: $uri=~s/^\///;
10605: my $homeserver = &homeserver($cnum,$cdom);
10606: my $protocol = $protocol{$homeserver};
10607: $protocol = 'http' if ($protocol ne 'https');
10608: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
10609: my $ua=new LWP::UserAgent;
10610: my $request=new HTTP::Request($reqtype,$uri);
10611: my $response=$ua->request($request);
10612: $$rtncode = $response->code;
10613: if (! $response->is_success()) {
10614: return 'failed';
10615: }
10616: if ($reqtype eq 'HEAD') {
10617: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
10618: } elsif ($reqtype eq 'GET') {
10619: $$info = $response->content;
10620: }
10621: return 'ok';
10622: }
10623:
10624: sub readfile {
10625: my $file = shift;
10626: if ( (! -e $file ) || ($file eq '') ) { return -1; };
10627: my $fh;
10628: open($fh,"<$file");
10629: my $a='';
10630: while (my $line = <$fh>) { $a .= $line; }
10631: return $a;
10632: }
10633:
10634: sub filelocation {
10635: my ($dir,$file) = @_;
10636: my $location;
10637: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
10638:
10639: if ($file =~ m-^/adm/-) {
10640: $file=~s-^/adm/wrapper/-/-;
10641: $file=~s-^/adm/coursedocs/showdoc/-/-;
10642: }
10643:
10644: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
10645: $location = $file;
10646: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
10647: my ($udom,$uname,$filename)=
10648: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
10649: my $home=&homeserver($uname,$udom);
10650: my $is_me=0;
10651: my @ids=¤t_machine_ids();
10652: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
10653: if ($is_me) {
10654: $location=propath($udom,$uname).'/userfiles/'.$filename;
10655: } else {
10656: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
10657: $udom.'/'.$uname.'/'.$filename;
10658: }
10659: } elsif ($file =~ m-^/adm/-) {
10660: $location = $perlvar{'lonDocRoot'}.'/'.$file;
10661: } else {
10662: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10663: $file=~s:^/(res|priv)/:/:;
10664: my $space=$1;
10665: if ( !( $file =~ m:^/:) ) {
10666: $location = $dir. '/'.$file;
10667: } else {
10668: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
10669: }
10670: }
10671: $location=~s://+:/:g; # remove duplicate /
10672: while ($location=~m{/\.\./}) {
10673: if ($location =~ m{/[^/]+/\.\./}) {
10674: $location=~ s{/[^/]+/\.\./}{/}g;
10675: } else {
10676: $location=~ s{/\.\./}{/}g;
10677: }
10678: } #remove dir/..
10679: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
10680: return $location;
10681: }
10682:
10683: sub hreflocation {
10684: my ($dir,$file)=@_;
10685: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
10686: $file=filelocation($dir,$file);
10687: } elsif ($file=~m-^/adm/-) {
10688: $file=~s-^/adm/wrapper/-/-;
10689: $file=~s-^/adm/coursedocs/showdoc/-/-;
10690: }
10691: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
10692: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
10693: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
10694: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
10695: {/uploaded/$1/$2/}x;
10696: }
10697: if ($file=~ m{^/userfiles/}) {
10698: $file =~ s{^/userfiles/}{/uploaded/};
10699: }
10700: return $file;
10701: }
10702:
10703:
10704:
10705:
10706:
10707: sub current_machine_domains {
10708: return &machine_domains(&hostname($perlvar{'lonHostID'}));
10709: }
10710:
10711: sub machine_domains {
10712: my ($hostname) = @_;
10713: my @domains;
10714: my %hostname = &all_hostnames();
10715: while( my($id, $name) = each(%hostname)) {
10716: # &logthis("-$id-$name-$hostname-");
10717: if ($hostname eq $name) {
10718: push(@domains,&host_domain($id));
10719: }
10720: }
10721: return @domains;
10722: }
10723:
10724: sub current_machine_ids {
10725: return &machine_ids(&hostname($perlvar{'lonHostID'}));
10726: }
10727:
10728: sub machine_ids {
10729: my ($hostname) = @_;
10730: $hostname ||= &hostname($perlvar{'lonHostID'});
10731: my @ids;
10732: my %name_to_host = &all_names();
10733: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
10734: return @{ $name_to_host{$hostname} };
10735: }
10736: return;
10737: }
10738:
10739: sub additional_machine_domains {
10740: my @domains;
10741: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
10742: while( my $line = <$fh>) {
10743: $line =~ s/\s//g;
10744: push(@domains,$line);
10745: }
10746: return @domains;
10747: }
10748:
10749: sub default_login_domain {
10750: my $domain = $perlvar{'lonDefDomain'};
10751: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
10752: foreach my $posdom (¤t_machine_domains(),
10753: &additional_machine_domains()) {
10754: if (lc($posdom) eq lc($testdomain)) {
10755: $domain=$posdom;
10756: last;
10757: }
10758: }
10759: return $domain;
10760: }
10761:
10762: # ------------------------------------------------------------- Declutters URLs
10763:
10764: sub declutter {
10765: my $thisfn=shift;
10766: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10767: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10768: $thisfn=~s/^\///;
10769: $thisfn=~s|^adm/wrapper/||;
10770: $thisfn=~s|^adm/coursedocs/showdoc/||;
10771: $thisfn=~s/^res\///;
10772: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
10773: $thisfn=~s/\?.+$//;
10774: }
10775: return $thisfn;
10776: }
10777:
10778: # ------------------------------------------------------------- Clutter up URLs
10779:
10780: sub clutter {
10781: my $thisfn='/'.&declutter(shift);
10782: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
10783: || $thisfn =~ m{^/adm/(includes|pages)} ) {
10784: $thisfn='/res'.$thisfn;
10785: }
10786: if ($thisfn !~m|^/adm|) {
10787: if ($thisfn =~ m|^/ext/|) {
10788: $thisfn='/adm/wrapper'.$thisfn;
10789: } else {
10790: my ($ext) = ($thisfn =~ /\.(\w+)$/);
10791: my $embstyle=&Apache::loncommon::fileembstyle($ext);
10792: if ($embstyle eq 'ssi'
10793: || ($embstyle eq 'hdn')
10794: || ($embstyle eq 'rat')
10795: || ($embstyle eq 'prv')
10796: || ($embstyle eq 'ign')) {
10797: #do nothing with these
10798: } elsif (($embstyle eq 'img')
10799: || ($embstyle eq 'emb')
10800: || ($embstyle eq 'wrp')) {
10801: $thisfn='/adm/wrapper'.$thisfn;
10802: } elsif ($embstyle eq 'unk'
10803: && $thisfn!~/\.(sequence|page)$/) {
10804: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
10805: } else {
10806: # &logthis("Got a blank emb style");
10807: }
10808: }
10809: }
10810: return $thisfn;
10811: }
10812:
10813: sub clutter_with_no_wrapper {
10814: my $uri = &clutter(shift);
10815: if ($uri =~ m-^/adm/-) {
10816: $uri =~ s-^/adm/wrapper/-/-;
10817: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
10818: }
10819: return $uri;
10820: }
10821:
10822: sub freeze_escape {
10823: my ($value)=@_;
10824: if (ref($value)) {
10825: $value=&nfreeze($value);
10826: return '__FROZEN__'.&escape($value);
10827: }
10828: return &escape($value);
10829: }
10830:
10831:
10832: sub thaw_unescape {
10833: my ($value)=@_;
10834: if ($value =~ /^__FROZEN__/) {
10835: substr($value,0,10,undef);
10836: $value=&unescape($value);
10837: return &thaw($value);
10838: }
10839: return &unescape($value);
10840: }
10841:
10842: sub correct_line_ends {
10843: my ($result)=@_;
10844: $$result =~s/\r\n/\n/mg;
10845: $$result =~s/\r/\n/mg;
10846: }
10847: # ================================================================ Main Program
10848:
10849: sub goodbye {
10850: &logthis("Starting Shut down");
10851: #not converted to using infrastruture and probably shouldn't be
10852: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
10853: #converted
10854: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
10855: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
10856: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
10857: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
10858: #1.1 only
10859: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
10860: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
10861: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
10862: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
10863: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
10864: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
10865: &logthis(sprintf("%-20s is %s",'hits',$hits));
10866: &flushcourselogs();
10867: &logthis("Shutting down");
10868: }
10869:
10870: sub get_dns {
10871: my ($url,$func,$ignore_cache) = @_;
10872: if (!$ignore_cache) {
10873: my ($content,$cached)=
10874: &Apache::lonnet::is_cached_new('dns',$url);
10875: if ($cached) {
10876: &$func($content);
10877: return;
10878: }
10879: }
10880:
10881: my %alldns;
10882: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10883: foreach my $dns (<$config>) {
10884: next if ($dns !~ /^\^(\S*)/x);
10885: my $line = $1;
10886: my ($host,$protocol) = split(/:/,$line);
10887: if ($protocol ne 'https') {
10888: $protocol = 'http';
10889: }
10890: $alldns{$host} = $protocol;
10891: }
10892: while (%alldns) {
10893: my ($dns) = keys(%alldns);
10894: my $ua=new LWP::UserAgent;
10895: $ua->timeout(30);
10896: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10897: my $response=$ua->request($request);
10898: delete($alldns{$dns});
10899: next if ($response->is_error());
10900: my @content = split("\n",$response->content);
10901: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10902: &$func(\@content);
10903: return;
10904: }
10905: close($config);
10906: my $which = (split('/',$url))[3];
10907: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10908: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10909: my @content = <$config>;
10910: &$func(\@content);
10911: return;
10912: }
10913: # ------------------------------------------------------------ Read domain file
10914: {
10915: my $loaded;
10916: my %domain;
10917:
10918: sub parse_domain_tab {
10919: my ($lines) = @_;
10920: foreach my $line (@$lines) {
10921: next if ($line =~ /^(\#|\s*$ )/x);
10922:
10923: chomp($line);
10924: my ($name,@elements) = split(/:/,$line,9);
10925: my %this_domain;
10926: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10927: 'lang_def', 'city', 'longi', 'lati',
10928: 'primary') {
10929: $this_domain{$field} = shift(@elements);
10930: }
10931: $domain{$name} = \%this_domain;
10932: }
10933: }
10934:
10935: sub reset_domain_info {
10936: undef($loaded);
10937: undef(%domain);
10938: }
10939:
10940: sub load_domain_tab {
10941: my ($ignore_cache) = @_;
10942: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10943: my $fh;
10944: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10945: my @lines = <$fh>;
10946: &parse_domain_tab(\@lines);
10947: }
10948: close($fh);
10949: $loaded = 1;
10950: }
10951:
10952: sub domain {
10953: &load_domain_tab() if (!$loaded);
10954:
10955: my ($name,$what) = @_;
10956: return if ( !exists($domain{$name}) );
10957:
10958: if (!$what) {
10959: return $domain{$name}{'description'};
10960: }
10961: return $domain{$name}{$what};
10962: }
10963:
10964: sub domain_info {
10965: &load_domain_tab() if (!$loaded);
10966: return %domain;
10967: }
10968:
10969: }
10970:
10971:
10972: # ------------------------------------------------------------- Read hosts file
10973: {
10974: my %hostname;
10975: my %hostdom;
10976: my %libserv;
10977: my $loaded;
10978: my %name_to_host;
10979: my %internetdom;
10980: my %LC_dns_serv;
10981:
10982: sub parse_hosts_tab {
10983: my ($file) = @_;
10984: foreach my $configline (@$file) {
10985: next if ($configline =~ /^(\#|\s*$ )/x);
10986: chomp($configline);
10987: if ($configline =~ /^\^/) {
10988: if ($configline =~ /^\^([\w.\-]+)/) {
10989: $LC_dns_serv{$1} = 1;
10990: }
10991: next;
10992: }
10993: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10994: $name=~s/\s//g;
10995: if ($id && $domain && $role && $name) {
10996: $hostname{$id}=$name;
10997: push(@{$name_to_host{$name}}, $id);
10998: $hostdom{$id}=$domain;
10999: if ($role eq 'library') { $libserv{$id}=$name; }
11000: if (defined($protocol)) {
11001: if ($protocol eq 'https') {
11002: $protocol{$id} = $protocol;
11003: } else {
11004: $protocol{$id} = 'http';
11005: }
11006: } else {
11007: $protocol{$id} = 'http';
11008: }
11009: if (defined($intdom)) {
11010: $internetdom{$id} = $intdom;
11011: }
11012: }
11013: }
11014: }
11015:
11016: sub reset_hosts_info {
11017: &purge_remembered();
11018: &reset_domain_info();
11019: &reset_hosts_ip_info();
11020: undef(%name_to_host);
11021: undef(%hostname);
11022: undef(%hostdom);
11023: undef(%libserv);
11024: undef($loaded);
11025: }
11026:
11027: sub load_hosts_tab {
11028: my ($ignore_cache) = @_;
11029: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11030: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11031: my @config = <$config>;
11032: &parse_hosts_tab(\@config);
11033: close($config);
11034: $loaded=1;
11035: }
11036:
11037: sub hostname {
11038: &load_hosts_tab() if (!$loaded);
11039:
11040: my ($lonid) = @_;
11041: return $hostname{$lonid};
11042: }
11043:
11044: sub all_hostnames {
11045: &load_hosts_tab() if (!$loaded);
11046:
11047: return %hostname;
11048: }
11049:
11050: sub all_names {
11051: &load_hosts_tab() if (!$loaded);
11052:
11053: return %name_to_host;
11054: }
11055:
11056: sub all_host_domain {
11057: &load_hosts_tab() if (!$loaded);
11058: return %hostdom;
11059: }
11060:
11061: sub is_library {
11062: &load_hosts_tab() if (!$loaded);
11063:
11064: return exists($libserv{$_[0]});
11065: }
11066:
11067: sub all_library {
11068: &load_hosts_tab() if (!$loaded);
11069:
11070: return %libserv;
11071: }
11072:
11073: sub unique_library {
11074: #2x reverse removes all hostnames that appear more than once
11075: my %unique = reverse &all_library();
11076: return reverse %unique;
11077: }
11078:
11079: sub get_servers {
11080: &load_hosts_tab() if (!$loaded);
11081:
11082: my ($domain,$type) = @_;
11083: my %possible_hosts = ($type eq 'library') ? %libserv
11084: : %hostname;
11085: my %result;
11086: if (ref($domain) eq 'ARRAY') {
11087: while ( my ($host,$hostname) = each(%possible_hosts)) {
11088: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11089: $result{$host} = $hostname;
11090: }
11091: }
11092: } else {
11093: while ( my ($host,$hostname) = each(%possible_hosts)) {
11094: if ($hostdom{$host} eq $domain) {
11095: $result{$host} = $hostname;
11096: }
11097: }
11098: }
11099: return %result;
11100: }
11101:
11102: sub get_unique_servers {
11103: my %unique = reverse &get_servers(@_);
11104: return reverse %unique;
11105: }
11106:
11107: sub host_domain {
11108: &load_hosts_tab() if (!$loaded);
11109:
11110: my ($lonid) = @_;
11111: return $hostdom{$lonid};
11112: }
11113:
11114: sub all_domains {
11115: &load_hosts_tab() if (!$loaded);
11116:
11117: my %seen;
11118: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11119: return @uniq;
11120: }
11121:
11122: sub internet_dom {
11123: &load_hosts_tab() if (!$loaded);
11124:
11125: my ($lonid) = @_;
11126: return $internetdom{$lonid};
11127: }
11128:
11129: sub is_LC_dns {
11130: &load_hosts_tab() if (!$loaded);
11131:
11132: my ($hostname) = @_;
11133: return exists($LC_dns_serv{$hostname});
11134: }
11135:
11136: }
11137:
11138: {
11139: my %iphost;
11140: my %name_to_ip;
11141: my %lonid_to_ip;
11142:
11143: sub get_hosts_from_ip {
11144: my ($ip) = @_;
11145: my %iphosts = &get_iphost();
11146: if (ref($iphosts{$ip})) {
11147: return @{$iphosts{$ip}};
11148: }
11149: return;
11150: }
11151:
11152: sub reset_hosts_ip_info {
11153: undef(%iphost);
11154: undef(%name_to_ip);
11155: undef(%lonid_to_ip);
11156: }
11157:
11158: sub get_host_ip {
11159: my ($lonid) = @_;
11160: if (exists($lonid_to_ip{$lonid})) {
11161: return $lonid_to_ip{$lonid};
11162: }
11163: my $name=&hostname($lonid);
11164: my $ip = gethostbyname($name);
11165: return if (!$ip || length($ip) ne 4);
11166: $ip=inet_ntoa($ip);
11167: $name_to_ip{$name} = $ip;
11168: $lonid_to_ip{$lonid} = $ip;
11169: return $ip;
11170: }
11171:
11172: sub get_iphost {
11173: my ($ignore_cache) = @_;
11174:
11175: if (!$ignore_cache) {
11176: if (%iphost) {
11177: return %iphost;
11178: }
11179: my ($ip_info,$cached)=
11180: &Apache::lonnet::is_cached_new('iphost','iphost');
11181: if ($cached) {
11182: %iphost = %{$ip_info->[0]};
11183: %name_to_ip = %{$ip_info->[1]};
11184: %lonid_to_ip = %{$ip_info->[2]};
11185: return %iphost;
11186: }
11187: }
11188:
11189: # get yesterday's info for fallback
11190: my %old_name_to_ip;
11191: my ($ip_info,$cached)=
11192: &Apache::lonnet::is_cached_new('iphost','iphost');
11193: if ($cached) {
11194: %old_name_to_ip = %{$ip_info->[1]};
11195: }
11196:
11197: my %name_to_host = &all_names();
11198: foreach my $name (keys(%name_to_host)) {
11199: my $ip;
11200: if (!exists($name_to_ip{$name})) {
11201: $ip = gethostbyname($name);
11202: if (!$ip || length($ip) ne 4) {
11203: if (defined($old_name_to_ip{$name})) {
11204: $ip = $old_name_to_ip{$name};
11205: &logthis("Can't find $name defaulting to old $ip");
11206: } else {
11207: &logthis("Name $name no IP found");
11208: next;
11209: }
11210: } else {
11211: $ip=inet_ntoa($ip);
11212: }
11213: $name_to_ip{$name} = $ip;
11214: } else {
11215: $ip = $name_to_ip{$name};
11216: }
11217: foreach my $id (@{ $name_to_host{$name} }) {
11218: $lonid_to_ip{$id} = $ip;
11219: }
11220: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11221: }
11222: &Apache::lonnet::do_cache_new('iphost','iphost',
11223: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11224: 48*60*60);
11225:
11226: return %iphost;
11227: }
11228:
11229: #
11230: # Given a DNS returns the loncapa host name for that DNS
11231: #
11232: sub host_from_dns {
11233: my ($dns) = @_;
11234: my @hosts;
11235: my $ip;
11236:
11237: if (exists($name_to_ip{$dns})) {
11238: $ip = $name_to_ip{$dns};
11239: }
11240: if (!$ip) {
11241: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11242: if (length($ip) == 4) {
11243: $ip = &IO::Socket::inet_ntoa($ip);
11244: }
11245: }
11246: if ($ip) {
11247: @hosts = get_hosts_from_ip($ip);
11248: return $hosts[0];
11249: }
11250: return undef;
11251: }
11252:
11253: sub get_internet_names {
11254: my ($lonid) = @_;
11255: return if ($lonid eq '');
11256: my ($idnref,$cached)=
11257: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11258: if ($cached) {
11259: return $idnref;
11260: }
11261: my $ip = &get_host_ip($lonid);
11262: my @hosts = &get_hosts_from_ip($ip);
11263: my %iphost = &get_iphost();
11264: my (@idns,%seen);
11265: foreach my $id (@hosts) {
11266: my $dom = &host_domain($id);
11267: my $prim_id = &domain($dom,'primary');
11268: my $prim_ip = &get_host_ip($prim_id);
11269: next if ($seen{$prim_ip});
11270: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11271: foreach my $id (@{$iphost{$prim_ip}}) {
11272: my $intdom = &internet_dom($id);
11273: unless (grep(/^\Q$intdom\E$/,@idns)) {
11274: push(@idns,$intdom);
11275: }
11276: }
11277: }
11278: $seen{$prim_ip} = 1;
11279: }
11280: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11281: }
11282:
11283: }
11284:
11285: sub all_loncaparevs {
11286: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11287: }
11288:
11289: BEGIN {
11290:
11291: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11292: unless ($readit) {
11293: {
11294: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11295: %perlvar = (%perlvar,%{$configvars});
11296: }
11297:
11298:
11299: # ------------------------------------------------------ Read spare server file
11300: {
11301: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11302:
11303: while (my $configline=<$config>) {
11304: chomp($configline);
11305: if ($configline) {
11306: my ($host,$type) = split(':',$configline,2);
11307: if (!defined($type) || $type eq '') { $type = 'default' };
11308: push(@{ $spareid{$type} }, $host);
11309: }
11310: }
11311: close($config);
11312: }
11313: # ------------------------------------------------------------ Read permissions
11314: {
11315: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11316:
11317: while (my $configline=<$config>) {
11318: chomp($configline);
11319: if ($configline) {
11320: my ($role,$perm)=split(/ /,$configline);
11321: if ($perm ne '') { $pr{$role}=$perm; }
11322: }
11323: }
11324: close($config);
11325: }
11326:
11327: # -------------------------------------------- Read plain texts for permissions
11328: {
11329: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11330:
11331: while (my $configline=<$config>) {
11332: chomp($configline);
11333: if ($configline) {
11334: my ($short,@plain)=split(/:/,$configline);
11335: %{$prp{$short}} = ();
11336: if (@plain > 0) {
11337: $prp{$short}{'std'} = $plain[0];
11338: for (my $i=1; $i<@plain; $i++) {
11339: $prp{$short}{'alt'.$i} = $plain[$i];
11340: }
11341: }
11342: }
11343: }
11344: close($config);
11345: }
11346:
11347: # ---------------------------------------------------------- Read package table
11348: {
11349: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11350:
11351: while (my $configline=<$config>) {
11352: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11353: chomp($configline);
11354: my ($short,$plain)=split(/:/,$configline);
11355: my ($pack,$name)=split(/\&/,$short);
11356: if ($plain ne '') {
11357: $packagetab{$pack.'&'.$name.'&name'}=$name;
11358: $packagetab{$short}=$plain;
11359: }
11360: }
11361: close($config);
11362: }
11363:
11364: # ---------------------------------------------------------- Read loncaparev table
11365: {
11366: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11367: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11368: while (my $configline=<$config>) {
11369: chomp($configline);
11370: my ($hostid,$loncaparev)=split(/:/,$configline);
11371: $loncaparevs{$hostid}=$loncaparev;
11372: }
11373: close($config);
11374: }
11375: }
11376: }
11377:
11378: # ---------------------------------------------------------- Read serverhostID table
11379: {
11380: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11381: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11382: while (my $configline=<$config>) {
11383: chomp($configline);
11384: my ($name,$id)=split(/:/,$configline);
11385: $serverhomeIDs{$name}=$id;
11386: }
11387: close($config);
11388: }
11389: }
11390: }
11391:
11392: {
11393: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11394: if (-e $file) {
11395: my $parser = HTML::LCParser->new($file);
11396: while (my $token = $parser->get_token()) {
11397: if ($token->[0] eq 'S') {
11398: my $item = $token->[1];
11399: my $name = $token->[2]{'name'};
11400: my $value = $token->[2]{'value'};
11401: if ($item ne '' && $name ne '' && $value ne '') {
11402: my $release = $parser->get_text();
11403: $release =~ s/(^\s*|\s*$ )//gx;
11404: $needsrelease{$item.':'.$name.':'.$value} = $release;
11405: }
11406: }
11407: }
11408: }
11409: }
11410:
11411: # ---------------------------------------------------------- Read managers table
11412: {
11413: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11414: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11415: while (my $configline=<$config>) {
11416: chomp($configline);
11417: next if ($configline =~ /^\#/);
11418: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11419: $managerstab{$configline} = 1;
11420: }
11421: }
11422: close($config);
11423: }
11424: }
11425: }
11426:
11427: # ------------- set up temporary directory
11428: {
11429: $tmpdir = LONCAPA::tempdir();
11430:
11431: }
11432:
11433: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11434: 'compress_threshold'=> 20_000,
11435: });
11436:
11437: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11438: $dumpcount=0;
11439: $locknum=0;
11440:
11441: &logtouch();
11442: &logthis('<font color="yellow">INFO: Read configuration</font>');
11443: $readit=1;
11444: {
11445: use integer;
11446: my $test=(2**32)+1;
11447: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11448: &logthis(" Detected 64bit platform ($_64bit)");
11449: }
11450: }
11451: }
11452:
11453: 1;
11454: __END__
11455:
11456: =pod
11457:
11458: =head1 NAME
11459:
11460: Apache::lonnet - Subroutines to ask questions about things in the network.
11461:
11462: =head1 SYNOPSIS
11463:
11464: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11465:
11466: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11467:
11468: Common parameters:
11469:
11470: =over 4
11471:
11472: =item *
11473:
11474: $uname : an internal username (if $cname expecting a course Id specifically)
11475:
11476: =item *
11477:
11478: $udom : a domain (if $cdom expecting a course's domain specifically)
11479:
11480: =item *
11481:
11482: $symb : a resource instance identifier
11483:
11484: =item *
11485:
11486: $namespace : the name of a .db file that contains the data needed or
11487: being set.
11488:
11489: =back
11490:
11491: =head1 OVERVIEW
11492:
11493: lonnet provides subroutines which interact with the
11494: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11495: about classes, users, and resources.
11496:
11497: For many of these objects you can also use this to store data about
11498: them or modify them in various ways.
11499:
11500: =head2 Symbs
11501:
11502: To identify a specific instance of a resource, LON-CAPA uses symbols
11503: or "symbs"X<symb>. These identifiers are built from the URL of the
11504: map, the resource number of the resource in the map, and the URL of
11505: the resource itself. The latter is somewhat redundant, but might help
11506: if maps change.
11507:
11508: An example is
11509:
11510: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11511:
11512: The respective map entry is
11513:
11514: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11515: title="Problem 2">
11516: </resource>
11517:
11518: Symbs are used by the random number generator, as well as to store and
11519: restore data specific to a certain instance of for example a problem.
11520:
11521: =head2 Storing And Retrieving Data
11522:
11523: X<store()>X<cstore()>X<restore()>Three of the most important functions
11524: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
11525: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
11526: is is the non-critical message twin of cstore. These functions are for
11527: handlers to store a perl hash to a user's permanent data space in an
11528: easy manner, and to retrieve it again on another call. It is expected
11529: that a handler would use this once at the beginning to retrieve data,
11530: and then again once at the end to send only the new data back.
11531:
11532: The data is stored in the user's data directory on the user's
11533: homeserver under the ID of the course.
11534:
11535: The hash that is returned by restore will have all of the previous
11536: value for all of the elements of the hash.
11537:
11538: Example:
11539:
11540: #creating a hash
11541: my %hash;
11542: $hash{'foo'}='bar';
11543:
11544: #storing it
11545: &Apache::lonnet::cstore(\%hash);
11546:
11547: #changing a value
11548: $hash{'foo'}='notbar';
11549:
11550: #adding a new value
11551: $hash{'bar'}='foo';
11552: &Apache::lonnet::cstore(\%hash);
11553:
11554: #retrieving the hash
11555: my %history=&Apache::lonnet::restore();
11556:
11557: #print the hash
11558: foreach my $key (sort(keys(%history))) {
11559: print("\%history{$key} = $history{$key}");
11560: }
11561:
11562: Will print out:
11563:
11564: %history{1:foo} = bar
11565: %history{1:keys} = foo:timestamp
11566: %history{1:timestamp} = 990455579
11567: %history{2:bar} = foo
11568: %history{2:foo} = notbar
11569: %history{2:keys} = foo:bar:timestamp
11570: %history{2:timestamp} = 990455580
11571: %history{bar} = foo
11572: %history{foo} = notbar
11573: %history{timestamp} = 990455580
11574: %history{version} = 2
11575:
11576: Note that the special hash entries C<keys>, C<version> and
11577: C<timestamp> were added to the hash. C<version> will be equal to the
11578: total number of versions of the data that have been stored. The
11579: C<timestamp> attribute will be the UNIX time the hash was
11580: stored. C<keys> is available in every historical section to list which
11581: keys were added or changed at a specific historical revision of a
11582: hash.
11583:
11584: B<Warning>: do not store the hash that restore returns directly. This
11585: will cause a mess since it will restore the historical keys as if the
11586: were new keys. I.E. 1:foo will become 1:1:foo etc.
11587:
11588: Calling convention:
11589:
11590: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
11591: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
11592:
11593: For more detailed information, see lonnet specific documentation.
11594:
11595: =head1 RETURN MESSAGES
11596:
11597: =over 4
11598:
11599: =item * B<con_lost>: unable to contact remote host
11600:
11601: =item * B<con_delayed>: unable to contact remote host, message will be delivered
11602: when the connection is brought back up
11603:
11604: =item * B<con_failed>: unable to contact remote host and unable to save message
11605: for later delivery
11606:
11607: =item * B<error:>: an error a occurred, a description of the error follows the :
11608:
11609: =item * B<no_such_host>: unable to fund a host associated with the user/domain
11610: that was requested
11611:
11612: =back
11613:
11614: =head1 PUBLIC SUBROUTINES
11615:
11616: =head2 Session Environment Functions
11617:
11618: =over 4
11619:
11620: =item *
11621: X<appenv()>
11622: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
11623: the user envirnoment file, and will be restored for each access this
11624: user makes during this session, also modifies the %env for the current
11625: process. Optional rolesarrayref - if defined contains a reference to an array
11626: of roles which are exempt from the restriction on modifying user.role entries
11627: in the user's environment.db and in %env.
11628:
11629: =item *
11630: X<delenv()>
11631: B<delenv($delthis,$regexp)>: removes all items from the session
11632: environment file that begin with $delthis. If the
11633: optional second arg - $regexp - is true, $delthis is treated as a
11634: regular expression, otherwise \Q$delthis\E is used.
11635: The values are also deleted from the current processes %env.
11636:
11637: =item * get_env_multiple($name)
11638:
11639: gets $name from the %env hash, it seemlessly handles the cases where multiple
11640: values may be defined and end up as an array ref.
11641:
11642: returns an array of values
11643:
11644: =back
11645:
11646: =head2 User Information
11647:
11648: =over 4
11649:
11650: =item *
11651: X<queryauthenticate()>
11652: B<queryauthenticate($uname,$udom)>: try to determine user's current
11653: authentication scheme
11654:
11655: =item *
11656: X<authenticate()>
11657: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
11658: authenticate user from domain's lib servers (first use the current
11659: one). C<$upass> should be the users password.
11660: $checkdefauth is optional (value is 1 if a check should be made to
11661: authenticate user using default authentication method, and allow
11662: account creation if username does not have account in the domain).
11663: $clientcancheckhost is optional (value is 1 if checking whether the
11664: server can host will occur on the client side in lonauth.pm).
11665:
11666: =item *
11667: X<homeserver()>
11668: B<homeserver($uname,$udom)>: find the server which has
11669: the user's directory and files (there must be only one), this caches
11670: the answer, and also caches if there is a borken connection.
11671:
11672: =item *
11673: X<idget()>
11674: B<idget($udom,@ids)>: find the usernames behind a list of IDs
11675: (IDs are a unique resource in a domain, there must be only 1 ID per
11676: username, and only 1 username per ID in a specific domain) (returns
11677: hash: id=>name,id=>name)
11678:
11679: =item *
11680: X<idrget()>
11681: B<idrget($udom,@unames)>: find the IDs behind a list of
11682: usernames (returns hash: name=>id,name=>id)
11683:
11684: =item *
11685: X<idput()>
11686: B<idput($udom,%ids)>: store away a list of names and associated IDs
11687:
11688: =item *
11689: X<rolesinit()>
11690: B<rolesinit($udom,$username,$authhost)>: get user privileges
11691:
11692: =item *
11693: X<getsection()>
11694: B<getsection($udom,$uname,$cname)>: finds the section of student in the
11695: course $cname, return section name/number or '' for "not in course"
11696: and '-1' for "no section"
11697:
11698: =item *
11699: X<userenvironment()>
11700: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
11701: passed in @what from the requested user's environment, returns a hash
11702:
11703: =item *
11704: X<userlog_query()>
11705: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
11706: activity.log file. %filters defines filters applied when parsing the
11707: log file. These can be start or end timestamps, or the type of action
11708: - log to look for Login or Logout events, check for Checkin or
11709: Checkout, role for role selection. The response is in the form
11710: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
11711: escaped strings of the action recorded in the activity.log file.
11712:
11713: =back
11714:
11715: =head2 User Roles
11716:
11717: =over 4
11718:
11719: =item *
11720:
11721: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
11722: F: full access
11723: U,I,K: authentication modes (cxx only)
11724: '': forbidden
11725: 1: user needs to choose course
11726: 2: browse allowed
11727: A: passphrase authentication needed
11728:
11729: =item *
11730:
11731: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
11732: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
11733: and course level
11734:
11735: =item *
11736:
11737: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
11738: (rolesplain.tab); plain text explanation of a user role term.
11739: $type is Course (default) or Community.
11740: If $forcedefault evaluates to true, text returned will be default
11741: text for $type. Otherwise, if this is a course, the text returned
11742: will be a custom name for the role (if defined in the course's
11743: environment). If no custom name is defined the default is returned.
11744:
11745: =item *
11746:
11747: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
11748: All arguments are optional. Returns a hash of a roles, either for
11749: co-author/assistant author roles for a user's Construction Space
11750: (default), or if $context is 'userroles', roles for the user himself,
11751: In the hash, keys are set to colon-separated $uname,$udom,$role, and
11752: (optionally) if $withsec is true, a fourth colon-separated item - $section.
11753: For each key, value is set to colon-separated start and end times for
11754: the role. If no username and domain are specified, will default to
11755: current user/domain. Types, roles, and roledoms are references to arrays
11756: of role statuses (active, future or previous), roles
11757: (e.g., cc,in, st etc.) and domains of the roles which can be used
11758: to restrict the list of roles reported. If no array ref is
11759: provided for types, will default to return only active roles.
11760:
11761: =back
11762:
11763: =head2 User Modification
11764:
11765: =over 4
11766:
11767: =item *
11768:
11769: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
11770: user for the level given by URL. Optional start and end dates (leave empty
11771: string or zero for "no date")
11772:
11773: =item *
11774:
11775: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
11776: change a users, password, possible return values are: ok,
11777: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
11778: refused
11779:
11780: =item *
11781:
11782: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
11783:
11784: =item *
11785:
11786: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
11787: $forceid,$desiredhome,$email,$inststatus,$candelete) :
11788:
11789: will update user information (firstname,middlename,lastname,generation,
11790: permanentemail), and if forceid is true, student/employee ID also.
11791: A user's institutional affiliation(s) can also be updated.
11792: User information fields will not be overwritten with empty entries
11793: unless the field is included in the $candelete array reference.
11794: This array is included when a single user is modified via "Manage Users",
11795: or when Autoupdate.pl is run by cron in a domain.
11796:
11797: =item *
11798:
11799: modifystudent
11800:
11801: modify a student's enrollment and identification information.
11802: The course id is resolved based on the current users environment.
11803: This means the envoking user must be a course coordinator or otherwise
11804: associated with a course.
11805:
11806: This call is essentially a wrapper for lonnet::modifyuser and
11807: lonnet::modify_student_enrollment
11808:
11809: Inputs:
11810:
11811: =over 4
11812:
11813: =item B<$udom> Student's loncapa domain
11814:
11815: =item B<$uname> Student's loncapa login name
11816:
11817: =item B<$uid> Student/Employee ID
11818:
11819: =item B<$umode> Student's authentication mode
11820:
11821: =item B<$upass> Student's password
11822:
11823: =item B<$first> Student's first name
11824:
11825: =item B<$middle> Student's middle name
11826:
11827: =item B<$last> Student's last name
11828:
11829: =item B<$gene> Student's generation
11830:
11831: =item B<$usec> Student's section in course
11832:
11833: =item B<$end> Unix time of the roles expiration
11834:
11835: =item B<$start> Unix time of the roles start date
11836:
11837: =item B<$forceid> If defined, allow $uid to be changed
11838:
11839: =item B<$desiredhome> server to use as home server for student
11840:
11841: =item B<$email> Student's permanent e-mail address
11842:
11843: =item B<$type> Type of enrollment (auto or manual)
11844:
11845: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
11846:
11847: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
11848:
11849: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
11850:
11851: =item B<$context> role change context (shown in User Management Logs display in a course)
11852:
11853: =item B<$inststatus> institutional status of user - : separated string of escaped status types
11854:
11855: =back
11856:
11857: =item *
11858:
11859: modify_student_enrollment
11860:
11861: Change a students enrollment status in a class. The environment variable
11862: 'role.request.course' must be defined for this function to proceed.
11863:
11864: Inputs:
11865:
11866: =over 4
11867:
11868: =item $udom, students domain
11869:
11870: =item $uname, students name
11871:
11872: =item $uid, students user id
11873:
11874: =item $first, students first name
11875:
11876: =item $middle
11877:
11878: =item $last
11879:
11880: =item $gene
11881:
11882: =item $usec
11883:
11884: =item $end
11885:
11886: =item $start
11887:
11888: =item $type
11889:
11890: =item $locktype
11891:
11892: =item $cid
11893:
11894: =item $selfenroll
11895:
11896: =item $context
11897:
11898: =back
11899:
11900:
11901: =item *
11902:
11903: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11904: custom role; give a custom role to a user for the level given by URL. Specify
11905: name and domain of role author, and role name
11906:
11907: =item *
11908:
11909: revokerole($udom,$uname,$url,$role) : revoke a role for url
11910:
11911: =item *
11912:
11913: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
11914:
11915: =back
11916:
11917: =head2 Course Infomation
11918:
11919: =over 4
11920:
11921: =item *
11922:
11923: coursedescription($courseid,$options) : returns a hash of information about the
11924: specified course id, including all environment settings for the
11925: course, the description of the course will be in the hash under the
11926: key 'description'
11927:
11928: $options is an optional parameter that if supplied is a hash reference that controls
11929: what how this function works. It has the following key/values:
11930:
11931: =over 4
11932:
11933: =item freshen_cache
11934:
11935: If defined, and the environment cache for the course is valid, it is
11936: returned in the returned hash.
11937:
11938: =item one_time
11939:
11940: If defined, the last cache time is set to _now_
11941:
11942: =item user
11943:
11944: If defined, the supplied username is used instead of the current user.
11945:
11946:
11947: =back
11948:
11949: =item *
11950:
11951: resdata($name,$domain,$type,@which) : request for current parameter
11952: setting for a specific $type, where $type is either 'course' or 'user',
11953: @what should be a list of parameters to ask about. This routine caches
11954: answers for 5 minutes.
11955:
11956: =item *
11957:
11958: get_courseresdata($courseid, $domain) : dump the entire course resource
11959: data base, returning a hash that is keyed by the resource name and has
11960: values that are the resource value. I believe that the timestamps and
11961: versions are also returned.
11962:
11963:
11964: =back
11965:
11966: =head2 Course Modification
11967:
11968: =over 4
11969:
11970: =item *
11971:
11972: writecoursepref($courseid,%prefs) : write preferences (environment
11973: database) for a course
11974:
11975: =item *
11976:
11977: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11978:
11979: =item *
11980:
11981: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11982:
11983: =back
11984:
11985: =head2 Resource Subroutines
11986:
11987: =over 4
11988:
11989: =item *
11990:
11991: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
11992:
11993: =item *
11994:
11995: repcopy($filename) : subscribes to the requested file, and attempts to
11996: replicate from the owning library server, Might return
11997: 'unavailable', 'not_found', 'forbidden', 'ok', or
11998: 'bad_request', also attempts to grab the metadata for the
11999: resource. Expects the local filesystem pathname
12000: (/home/httpd/html/res/....)
12001:
12002: =back
12003:
12004: =head2 Resource Information
12005:
12006: =over 4
12007:
12008: =item *
12009:
12010: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12011: a vairety of different possible values, $varname should be a request
12012: string, and the other parameters can be used to specify who and what
12013: one is asking about.
12014:
12015: Possible values for $varname are environment.lastname (or other item
12016: from the envirnment hash), user.name (or someother aspect about the
12017: user), resource.0.maxtries (or some other part and parameter of a
12018: resource)
12019:
12020: =item *
12021:
12022: directcondval($number) : get current value of a condition; reads from a state
12023: string
12024:
12025: =item *
12026:
12027: condval($condidx) : value of condition index based on state
12028:
12029: =item *
12030:
12031: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12032: resource's metadata, $what should be either a specific key, or either
12033: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12034: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12035:
12036: this function automatically caches all requests
12037:
12038: =item *
12039:
12040: metadata_query($query,$custom,$customshow) : make a metadata query against the
12041: network of library servers; returns file handle of where SQL and regex results
12042: will be stored for query
12043:
12044: =item *
12045:
12046: symbread($filename) : return symbolic list entry (filename argument optional);
12047: returns the data handle
12048:
12049: =item *
12050:
12051: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
12052: a possible symb for the URL in $thisfn, and if is an encryypted
12053: resource that the user accessed using /enc/ returns a 1 on success, 0
12054: on failure, user must be in a course, as it assumes the existance of
12055: the course initial hash, and uses $env('request.course.id'}
12056:
12057:
12058: =item *
12059:
12060: symbclean($symb) : removes versions numbers from a symb, returns the
12061: cleaned symb
12062:
12063: =item *
12064:
12065: is_on_map($uri) : checks if the $uri is somewhere on the current
12066: course map, user must be in a course for it to work.
12067:
12068: =item *
12069:
12070: numval($salt) : return random seed value (addend for rndseed)
12071:
12072: =item *
12073:
12074: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12075: a random seed, all arguments are optional, if they aren't sent it uses the
12076: environment to derive them. Note: if symb isn't sent and it can't get one
12077: from &symbread it will use the current time as its return value
12078:
12079: =item *
12080:
12081: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12082: unfakeable, receipt
12083:
12084: =item *
12085:
12086: receipt() : API to ireceipt working off of env values; given out to users
12087:
12088: =item *
12089:
12090: countacc($url) : count the number of accesses to a given URL
12091:
12092: =item *
12093:
12094: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12095:
12096: =item *
12097:
12098: checkin($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 $tcrsid)
12099:
12100: =item *
12101:
12102: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12103:
12104: =item *
12105:
12106: devalidate($symb) : devalidate temporary spreadsheet calculations,
12107: forcing spreadsheet to reevaluate the resource scores next time.
12108:
12109: =back
12110:
12111: =head2 Storing/Retreiving Data
12112:
12113: =over 4
12114:
12115: =item *
12116:
12117: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12118: for this url; hashref needs to be given and should be a \%hashname; the
12119: remaining args aren't required and if they aren't passed or are '' they will
12120: be derived from the env
12121:
12122: =item *
12123:
12124: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12125: uses critical subroutine
12126:
12127: =item *
12128:
12129: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12130: all args are optional
12131:
12132: =item *
12133:
12134: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12135: dumps the complete (or key matching regexp) namespace into a hash
12136: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12137: normally &store()ed into
12138:
12139: $range should be either an integer '100' (give me the first 100
12140: matching records)
12141: or be two integers sperated by a - with no spaces
12142: '30-50' (give me the 30th through the 50th matching
12143: records)
12144:
12145:
12146: =item *
12147:
12148: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12149: replaces a &store() version of data with a replacement set of data
12150: for a particular resource in a namespace passed in the $storehash hash
12151: reference
12152:
12153: =item *
12154:
12155: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12156: works very similar to store/cstore, but all data is stored in a
12157: temporary location and can be reset using tmpreset, $storehash should
12158: be a hash reference, returns nothing on success
12159:
12160: =item *
12161:
12162: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12163: similar to restore, but all data is stored in a temporary location and
12164: can be reset using tmpreset. Returns a hash of values on success,
12165: error string otherwise.
12166:
12167: =item *
12168:
12169: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12170: deltes all keys for $symb form the temporary storage hash.
12171:
12172: =item *
12173:
12174: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12175: reference filled in from namesp ($udom and $uname are optional)
12176:
12177: =item *
12178:
12179: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12180: namesp ($udom and $uname are optional)
12181:
12182: =item *
12183:
12184: dump($namespace,$udom,$uname,$regexp,$range) :
12185: dumps the complete (or key matching regexp) namespace into a hash
12186: ($udom, $uname, $regexp, $range are optional)
12187:
12188: $range should be either an integer '100' (give me the first 100
12189: matching records)
12190: or be two integers sperated by a - with no spaces
12191: '30-50' (give me the 30th through the 50th matching
12192: records)
12193: =item *
12194:
12195: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12196: $store can be a scalar, an array reference, or if the amount to be
12197: incremented is > 1, a hash reference.
12198:
12199: ($udom and $uname are optional)
12200:
12201: =item *
12202:
12203: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12204: ($udom and $uname are optional)
12205:
12206: =item *
12207:
12208: cput($namespace,$storehash,$udom,$uname) : critical put
12209: ($udom and $uname are optional)
12210:
12211: =item *
12212:
12213: newput($namespace,$storehash,$udom,$uname) :
12214:
12215: Attempts to store the items in the $storehash, but only if they don't
12216: currently exist, if this succeeds you can be certain that you have
12217: successfully created a new key value pair in the $namespace db.
12218:
12219:
12220: Args:
12221: $namespace: name of database to store values to
12222: $storehash: hashref to store to the db
12223: $udom: (optional) domain of user containing the db
12224: $uname: (optional) name of user caontaining the db
12225:
12226: Returns:
12227: 'ok' -> succeeded in storing all keys of $storehash
12228: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12229: least <key> already existed in the db (other
12230: requested keys may also already exist)
12231: 'error: <msg>' -> unable to tie the DB or other error occurred
12232: 'con_lost' -> unable to contact request server
12233: 'refused' -> action was not allowed by remote machine
12234:
12235:
12236: =item *
12237:
12238: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12239: reference filled in from namesp (encrypts the return communication)
12240: ($udom and $uname are optional)
12241:
12242: =item *
12243:
12244: log($udom,$name,$home,$message) : write to permanent log for user; use
12245: critical subroutine
12246:
12247: =item *
12248:
12249: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12250: array reference filled in from namespace found in domain level on either
12251: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12252:
12253: =item *
12254:
12255: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12256: domain level either on specified domain server ($uhome) or primary domain
12257: server ($udom and $uhome are optional)
12258:
12259: =item *
12260:
12261: get_domain_defaults($target_domain) : returns hash with defaults for
12262: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12263: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12264: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12265: Values are retrieved from cache (if current), or from domain's configuration.db
12266: (if available), or lastly from values in lonTabs/dns_domain,tab,
12267: or lonTabs/domain.tab.
12268:
12269: %domdefaults = &get_auth_defaults($target_domain);
12270:
12271: =back
12272:
12273: =head2 Network Status Functions
12274:
12275: =over 4
12276:
12277: =item *
12278:
12279: dirlist() : return directory list based on URI (first arg).
12280:
12281: Inputs: 1 required, 5 optional.
12282:
12283: =over
12284:
12285: =item
12286: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12287:
12288: =item
12289: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12290:
12291: =item
12292: $username - username of user/course to be listed. Extracted from $uri if absent.
12293:
12294: =item
12295: $getpropath - boolean: 1 if prepend path using &propath().
12296:
12297: =item
12298: $getuserdir - boolean: 1 if prepend path for "userfiles".
12299:
12300: =item
12301: $alternateRoot - path to prepend in place of path from $uri.
12302:
12303: =back
12304:
12305: Returns: Array of up to two items.
12306:
12307: =over
12308:
12309: a reference to an array of files/subdirectories
12310:
12311: =over
12312:
12313: Each element in the array of files/subdirectories is a & separated list of
12314: item name and the result of running stat on the item. If dirlist was requested
12315: for a file instead of a directory, the item name will be ''. For a directory
12316: listing, if the item is a metadata file, the element will end &N&M
12317: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12318: default copyright set (1).
12319:
12320: =back
12321:
12322: a scalar containing error condition (if encountered).
12323:
12324: =over
12325:
12326: =item
12327: no_host (no homeserver identified for $username:$domain).
12328:
12329: =item
12330: no_such_host (server contacted for listing not identified as valid host).
12331:
12332: =item
12333: con_lost (connection to remote server failed).
12334:
12335: =item
12336: refused (invalid $username:$domain received on lond side).
12337:
12338: =item
12339: no_such_dir (directory at specified path on lond side does not exist).
12340:
12341: =item
12342: empty (directory at specified path on lond side is empty).
12343:
12344: =over
12345:
12346: This is currently not encountered because the &ls3, &ls2,
12347: &ls (_handler) routines on the lond side do not filter out
12348: . and .. from a directory listing.
12349:
12350: =back
12351:
12352: =back
12353:
12354: =back
12355:
12356: =item *
12357:
12358: spareserver() : find server with least workload from spare.tab
12359:
12360:
12361: =item *
12362:
12363: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12364: if there is no corresponding loncapa host.
12365:
12366: =back
12367:
12368:
12369: =head2 Apache Request
12370:
12371: =over 4
12372:
12373: =item *
12374:
12375: ssi($url,%hash) : server side include, does a complete request cycle on url to
12376: localhost, posts hash
12377:
12378: =back
12379:
12380: =head2 Data to String to Data
12381:
12382: =over 4
12383:
12384: =item *
12385:
12386: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12387: and '&' separators, supports elements that are arrayrefs and hashrefs
12388:
12389: =item *
12390:
12391: hashref2str($hashref) : convert a hashref into a string complete with
12392: escaping and '=' and '&' separators, supports elements that are
12393: arrayrefs and hashrefs
12394:
12395: =item *
12396:
12397: arrayref2str($arrayref) : convert an arrayref into a string complete
12398: with escaping and '&' separators, supports elements that are arrayrefs
12399: and hashrefs
12400:
12401: =item *
12402:
12403: str2hash($string) : convert string to hash using unescaping and
12404: splitting on '=' and '&', supports elements that are arrayrefs and
12405: hashrefs
12406:
12407: =item *
12408:
12409: str2array($string) : convert string to hash using unescaping and
12410: splitting on '&', supports elements that are arrayrefs and hashrefs
12411:
12412: =back
12413:
12414: =head2 Logging Routines
12415:
12416:
12417: These routines allow one to make log messages in the lonnet.log and
12418: lonnet.perm logfiles.
12419:
12420: =over 4
12421:
12422: =item *
12423:
12424: logtouch() : make sure the logfile, lonnet.log, exists
12425:
12426: =item *
12427:
12428: logthis() : append message to the normal lonnet.log file, it gets
12429: preiodically rolled over and deleted.
12430:
12431: =item *
12432:
12433: logperm() : append a permanent message to lonnet.perm.log, this log
12434: file never gets deleted by any automated portion of the system, only
12435: messages of critical importance should go in here.
12436:
12437:
12438: =back
12439:
12440: =head2 General File Helper Routines
12441:
12442: =over 4
12443:
12444: =item *
12445:
12446: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
12447: (a) files in /uploaded
12448: (i) If a local copy of the file exists -
12449: compares modification date of local copy with last-modified date for
12450: definitive version stored on home server for course. If local copy is
12451: stale, requests a new version from the home server and stores it.
12452: If the original has been removed from the home server, then local copy
12453: is unlinked.
12454: (ii) If local copy does not exist -
12455: requests the file from the home server and stores it.
12456:
12457: If $caller is 'uploadrep':
12458: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
12459: for request for files originally uploaded via DOCS.
12460: - returns 'ok' if fresh local copy now available, -1 otherwise.
12461:
12462: Otherwise:
12463: This indicates a call from the content generation phase of the request.
12464: - returns the entire contents of the file or -1.
12465:
12466: (b) files in /res
12467: - returns the entire contents of a file or -1;
12468: it properly subscribes to and replicates the file if neccessary.
12469:
12470:
12471: =item *
12472:
12473: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
12474: reference
12475:
12476: returns either a stat() list of data about the file or an empty list
12477: if the file doesn't exist or couldn't find out about it (connection
12478: problems or user unknown)
12479:
12480: =item *
12481:
12482: filelocation($dir,$file) : returns file system location of a file
12483: based on URI; meant to be "fairly clean" absolute reference, $dir is a
12484: directory that relative $file lookups are to looked in ($dir of /a/dir
12485: and a file of ../bob will become /a/bob)
12486:
12487: =item *
12488:
12489: hreflocation($dir,$file) : returns file system location or a URL; same as
12490: filelocation except for hrefs
12491:
12492: =item *
12493:
12494: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
12495:
12496: =back
12497:
12498: =head2 Usererfile file routines (/uploaded*)
12499:
12500: =over 4
12501:
12502: =item *
12503:
12504: userfileupload(): main rotine for putting a file in a user or course's
12505: filespace, arguments are,
12506:
12507: formname - required - this is the name of the element in $env where the
12508: filename, and the contents of the file to create/modifed exist
12509: the filename is in $env{'form.'.$formname.'.filename'} and the
12510: contents of the file is located in $env{'form.'.$formname}
12511: context - if coursedoc, store the file in the course of the active role
12512: of the current user;
12513: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
12514: if 'canceloverwrite': delete file in tmp/overwrites directory
12515: subdir - required - subdirectory to put the file in under ../userfiles/
12516: if undefined, it will be placed in "unknown"
12517:
12518: (This routine calls clean_filename() to remove any dangerous
12519: characters from the filename, and then calls finuserfileupload() to
12520: complete the transaction)
12521:
12522: returns either the url of the uploaded file (/uploaded/....) if successful
12523: and /adm/notfound.html if unsuccessful
12524:
12525: =item *
12526:
12527: clean_filename(): routine for cleaing a filename up for storage in
12528: userfile space, argument is:
12529:
12530: filename - proposed filename
12531:
12532: returns: the new clean filename
12533:
12534: =item *
12535:
12536: finishuserfileupload(): routine that creates and sends the file to
12537: userspace, probably shouldn't be called directly
12538:
12539: docuname: username or courseid of destination for the file
12540: docudom: domain of user/course of destination for the file
12541: formname: same as for userfileupload()
12542: fname: filename (including subdirectories) for the file
12543: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
12544: allfiles: reference to hash used to store objects found by parser
12545: codebase: reference to hash used for codebases of java objects found by parser
12546: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
12547: thumbheight: height (pixels) of thumbnail to be created for uploaded image
12548: resizewidth: width to be used to resize image using resizeImage from ImageMagick
12549: resizeheight: height to be used to resize image using resizeImage from ImageMagick
12550: context: if 'overwrite', will move the uploaded file from its temporary location to
12551: userfiles to facilitate overwriting a previously uploaded file with same name.
12552: mimetype: reference to scalar to accommodate mime type determined
12553: from File::MMagic if $parser = parse.
12554:
12555: returns either the url of the uploaded file (/uploaded/....) if successful
12556: and /adm/notfound.html if unsuccessful (or an error message if context
12557: was 'overwrite').
12558:
12559:
12560: =item *
12561:
12562: renameuserfile(): renames an existing userfile to a new name
12563:
12564: Args:
12565: docuname: username or courseid of destination for the file
12566: docudom: domain of user/course of destination for the file
12567: old: current file name (including any subdirs under userfiles)
12568: new: desired file name (including any subdirs under userfiles)
12569:
12570: =item *
12571:
12572: mkdiruserfile(): creates a directory is a userfiles dir
12573:
12574: Args:
12575: docuname: username or courseid of destination for the file
12576: docudom: domain of user/course of destination for the file
12577: dir: dir to create (including any subdirs under userfiles)
12578:
12579: =item *
12580:
12581: removeuserfile(): removes a file that exists in userfiles
12582:
12583: Args:
12584: docuname: username or courseid of destination for the file
12585: docudom: domain of user/course of destination for the file
12586: fname: filname to delete (including any subdirs under userfiles)
12587:
12588: =item *
12589:
12590: removeuploadedurl(): convience function for removeuserfile()
12591:
12592: Args:
12593: url: a full /uploaded/... url to delete
12594:
12595: =item *
12596:
12597: get_portfile_permissions():
12598: Args:
12599: domain: domain of user or course contain the portfolio files
12600: user: name of user or num of course contain the portfolio files
12601: Returns:
12602: hashref of a dump of the proper file_permissions.db
12603:
12604:
12605: =item *
12606:
12607: get_access_controls():
12608:
12609: Args:
12610: current_permissions: the hash ref returned from get_portfile_permissions()
12611: group: (optional) the group you want the files associated with
12612: file: (optional) the file you want access info on
12613:
12614: Returns:
12615: a hash (keys are file names) of hashes containing
12616: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
12617: values are XML containing access control settings (see below)
12618:
12619: Internal notes:
12620:
12621: access controls are stored in file_permissions.db as key=value pairs.
12622: key -> path to file/file_name\0uniqueID:scope_end_start
12623: where scope -> public,guest,course,group,domains or users.
12624: end -> UNIX time for end of access (0 -> no end date)
12625: start -> UNIX time for start of access
12626:
12627: value -> XML description of access control
12628: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
12629: <start></start>
12630: <end></end>
12631:
12632: <password></password> for scope type = guest
12633:
12634: <domain></domain> for scope type = course or group
12635: <number></number>
12636: <roles id="">
12637: <role></role>
12638: <access></access>
12639: <section></section>
12640: <group></group>
12641: </roles>
12642:
12643: <dom></dom> for scope type = domains
12644:
12645: <users> for scope type = users
12646: <user>
12647: <uname></uname>
12648: <udom></udom>
12649: </user>
12650: </users>
12651: </scope>
12652:
12653: Access data is also aggregated for each file in an additional key=value pair:
12654: key -> path to file/file_name\0accesscontrol
12655: value -> reference to hash
12656: hash contains key = value pairs
12657: where key = uniqueID:scope_end_start
12658: value = UNIX time record was last updated
12659:
12660: Used to improve speed of look-ups of access controls for each file.
12661:
12662: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
12663:
12664: modify_access_controls():
12665:
12666: Modifies access controls for a portfolio file
12667: Args
12668: 1. file name
12669: 2. reference to hash of required changes,
12670: 3. domain
12671: 4. username
12672: where domain,username are the domain of the portfolio owner
12673: (either a user or a course)
12674:
12675: Returns:
12676: 1. result of additions or updates ('ok' or 'error', with error message).
12677: 2. result of deletions ('ok' or 'error', with error message).
12678: 3. reference to hash of any new or updated access controls.
12679: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
12680: key = integer (inbound ID)
12681: value = uniqueID
12682:
12683: =back
12684:
12685: =head2 HTTP Helper Routines
12686:
12687: =over 4
12688:
12689: =item *
12690:
12691: escape() : unpack non-word characters into CGI-compatible hex codes
12692:
12693: =item *
12694:
12695: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
12696:
12697: =back
12698:
12699: =head1 PRIVATE SUBROUTINES
12700:
12701: =head2 Underlying communication routines (Shouldn't call)
12702:
12703: =over 4
12704:
12705: =item *
12706:
12707: subreply() : tries to pass a message to lonc, returns con_lost if incapable
12708:
12709: =item *
12710:
12711: reply() : uses subreply to send a message to remote machine, logs all failures
12712:
12713: =item *
12714:
12715: critical() : passes a critical message to another server; if cannot
12716: get through then place message in connection buffer directory and
12717: returns con_delayed, if incapable of saving message, returns
12718: con_failed
12719:
12720: =item *
12721:
12722: reconlonc() : tries to reconnect lonc client processes.
12723:
12724: =back
12725:
12726: =head2 Resource Access Logging
12727:
12728: =over 4
12729:
12730: =item *
12731:
12732: flushcourselogs() : flush (save) buffer logs and access logs
12733:
12734: =item *
12735:
12736: courselog($what) : save message for course in hash
12737:
12738: =item *
12739:
12740: courseacclog($what) : save message for course using &courselog(). Perform
12741: special processing for specific resource types (problems, exams, quizzes, etc).
12742:
12743: =item *
12744:
12745: goodbye() : flush course logs and log shutting down; it is called in srm.conf
12746: as a PerlChildExitHandler
12747:
12748: =back
12749:
12750: =head2 Other
12751:
12752: =over 4
12753:
12754: =item *
12755:
12756: symblist($mapname,%newhash) : update symbolic storage links
12757:
12758: =back
12759:
12760: =cut
12761:
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