1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1192 2012/10/29 17:39:02 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$name,$id) = @_;
360: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
361: return $response;
362: }
363:
364: # -------------------------------------------------- Non-critical communication
365: sub subreply {
366: my ($cmd,$server)=@_;
367: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
368: #
369: # With loncnew process trimming, there's a timing hole between lonc server
370: # process exit and the master server picking up the listen on the AF_UNIX
371: # socket. In that time interval, a lock file will exist:
372:
373: my $lockfile=$peerfile.".lock";
374: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
375: sleep(1);
376: }
377: # At this point, either a loncnew parent is listening or an old lonc
378: # or loncnew child is listening so we can connect or everything's dead.
379: #
380: # We'll give the connection a few tries before abandoning it. If
381: # connection is not possible, we'll con_lost back to the client.
382: #
383: my $client;
384: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
385: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
386: Type => SOCK_STREAM,
387: Timeout => 10);
388: if ($client) {
389: last; # Connected!
390: } else {
391: &create_connection(&hostname($server),$server);
392: }
393: sleep(1); # Try again later if failed connection.
394: }
395: my $answer;
396: if ($client) {
397: print $client "sethost:$server:$cmd\n";
398: $answer=<$client>;
399: if (!$answer) { $answer="con_lost"; }
400: chomp($answer);
401: } else {
402: $answer = 'con_lost'; # Failed connection.
403: }
404: return $answer;
405: }
406:
407: sub reply {
408: my ($cmd,$server)=@_;
409: unless (defined(&hostname($server))) { return 'no_such_host'; }
410: my $answer=subreply($cmd,$server);
411: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
412: &logthis("<font color=\"blue\">WARNING:".
413: " $cmd to $server returned $answer</font>");
414: }
415: return $answer;
416: }
417:
418: # ----------------------------------------------------------- Send USR1 to lonc
419:
420: sub reconlonc {
421: my ($lonid) = @_;
422: my $hostname = &hostname($lonid);
423: if ($lonid) {
424: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
425: if ($hostname && -e $peerfile) {
426: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
427: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
428: Type => SOCK_STREAM,
429: Timeout => 10);
430: if ($client) {
431: print $client ("reset_retries\n");
432: my $answer=<$client>;
433: #reset just this one.
434: }
435: }
436: return;
437: }
438:
439: &logthis("Trying to reconnect lonc");
440: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
441: if (open(my $fh,"<$loncfile")) {
442: my $loncpid=<$fh>;
443: chomp($loncpid);
444: if (kill 0 => $loncpid) {
445: &logthis("lonc at pid $loncpid responding, sending USR1");
446: kill USR1 => $loncpid;
447: sleep 1;
448: } else {
449: &logthis(
450: "<font color=\"blue\">WARNING:".
451: " lonc at pid $loncpid not responding, giving up</font>");
452: }
453: } else {
454: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
455: }
456: }
457:
458: # ------------------------------------------------------ Critical communication
459:
460: sub critical {
461: my ($cmd,$server)=@_;
462: unless (&hostname($server)) {
463: &logthis("<font color=\"blue\">WARNING:".
464: " Critical message to unknown server ($server)</font>");
465: return 'no_such_host';
466: }
467: my $answer=reply($cmd,$server);
468: if ($answer eq 'con_lost') {
469: &reconlonc("$perlvar{'lonSockDir'}/$server");
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: my $now=time;
473: my $middlename=$cmd;
474: $middlename=substr($middlename,0,16);
475: $middlename=~s/\W//g;
476: my $dfilename=
477: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
478: $dumpcount++;
479: {
480: my $dfh;
481: if (open($dfh,">$dfilename")) {
482: print $dfh "$cmd\n";
483: close($dfh);
484: }
485: }
486: sleep 2;
487: my $wcmd='';
488: {
489: my $dfh;
490: if (open($dfh,"<$dfilename")) {
491: $wcmd=<$dfh>;
492: close($dfh);
493: }
494: }
495: chomp($wcmd);
496: if ($wcmd eq $cmd) {
497: &logthis("<font color=\"blue\">WARNING: ".
498: "Connection buffer $dfilename: $cmd</font>");
499: &logperm("D:$server:$cmd");
500: return 'con_delayed';
501: } else {
502: &logthis("<font color=\"red\">CRITICAL:"
503: ." Critical connection failed: $server $cmd</font>");
504: &logperm("F:$server:$cmd");
505: return 'con_failed';
506: }
507: }
508: }
509: return $answer;
510: }
511:
512: # ------------------------------------------- check if return value is an error
513:
514: sub error {
515: my ($result) = @_;
516: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
517: if ($2 == 2) { return undef; }
518: return $1;
519: }
520: return undef;
521: }
522:
523: sub convert_and_load_session_env {
524: my ($lonidsdir,$handle)=@_;
525: my @profile;
526: {
527: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
528: if (!$opened) {
529: return 0;
530: }
531: flock($idf,LOCK_SH);
532: @profile=<$idf>;
533: close($idf);
534: }
535: my %temp_env;
536: foreach my $line (@profile) {
537: if ($line !~ m/=/) {
538: return 0;
539: }
540: chomp($line);
541: my ($envname,$envvalue)=split(/=/,$line,2);
542: $temp_env{&unescape($envname)} = &unescape($envvalue);
543: }
544: unlink("$lonidsdir/$handle.id");
545: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
546: 0640)) {
547: %disk_env = %temp_env;
548: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
549: untie(%disk_env);
550: }
551: return 1;
552: }
553:
554: # ------------------------------------------- Transfer profile into environment
555: my $env_loaded;
556: sub transfer_profile_to_env {
557: my ($lonidsdir,$handle,$force_transfer) = @_;
558: if (!$force_transfer && $env_loaded) { return; }
559:
560: if (!defined($lonidsdir)) {
561: $lonidsdir = $perlvar{'lonIDsDir'};
562: }
563: if (!defined($handle)) {
564: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
565: }
566:
567: my $convert;
568: {
569: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
570: if (!$opened) {
571: return;
572: }
573: flock($idf,LOCK_SH);
574: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
575: &GDBM_READER(),0640)) {
576: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
577: untie(%disk_env);
578: } else {
579: $convert = 1;
580: }
581: }
582: if ($convert) {
583: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
584: &logthis("Failed to load session, or convert session.");
585: }
586: }
587:
588: my %remove;
589: while ( my $envname = each(%env) ) {
590: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
591: if ($time < time-300) {
592: $remove{$key}++;
593: }
594: }
595: }
596:
597: $env{'user.environment'} = "$lonidsdir/$handle.id";
598: $env_loaded=1;
599: foreach my $expired_key (keys(%remove)) {
600: &delenv($expired_key);
601: }
602: }
603:
604: # ---------------------------------------------------- Check for valid session
605: sub check_for_valid_session {
606: my ($r,$name) = @_;
607: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
608: if ($name eq '') {
609: $name = 'lonID';
610: }
611: my $lonid=$cookies{$name};
612: return undef if (!$lonid);
613:
614: my $handle=&LONCAPA::clean_handle($lonid->value);
615: my $lonidsdir;
616: if ($name eq 'lonDAV') {
617: $lonidsdir=$r->dir_config('lonDAVsessDir');
618: } else {
619: $lonidsdir=$r->dir_config('lonIDsDir');
620: }
621: return undef if (!-e "$lonidsdir/$handle.id");
622:
623: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
624: return undef if (!$opened);
625:
626: flock($idf,LOCK_SH);
627: my %disk_env;
628: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
629: &GDBM_READER(),0640)) {
630: return undef;
631: }
632:
633: if (!defined($disk_env{'user.name'})
634: || !defined($disk_env{'user.domain'})) {
635: return undef;
636: }
637: return $handle;
638: }
639:
640: sub timed_flock {
641: my ($file,$lock_type) = @_;
642: my $failed=0;
643: eval {
644: local $SIG{__DIE__}='DEFAULT';
645: local $SIG{ALRM}=sub {
646: $failed=1;
647: die("failed lock");
648: };
649: alarm(13);
650: flock($file,$lock_type);
651: alarm(0);
652: };
653: if ($failed) {
654: return undef;
655: } else {
656: return 1;
657: }
658: }
659:
660: # ---------------------------------------------------------- Append Environment
661:
662: sub appenv {
663: my ($newenv,$roles) = @_;
664: if (ref($newenv) eq 'HASH') {
665: foreach my $key (keys(%{$newenv})) {
666: my $refused = 0;
667: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
668: $refused = 1;
669: if (ref($roles) eq 'ARRAY') {
670: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
671: if (grep(/^\Q$role\E$/,@{$roles})) {
672: $refused = 0;
673: }
674: }
675: }
676: if ($refused) {
677: &logthis("<font color=\"blue\">WARNING: ".
678: "Attempt to modify environment ".$key." to ".$newenv->{$key}
679: .'</font>');
680: delete($newenv->{$key});
681: } else {
682: $env{$key}=$newenv->{$key};
683: }
684: }
685: my $opened = open(my $env_file,'+<',$env{'user.environment'});
686: if ($opened
687: && &timed_flock($env_file,LOCK_EX)
688: &&
689: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
690: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
691: while (my ($key,$value) = each(%{$newenv})) {
692: $disk_env{$key} = $value;
693: }
694: untie(%disk_env);
695: }
696: }
697: return 'ok';
698: }
699: # ----------------------------------------------------- Delete from Environment
700:
701: sub delenv {
702: my ($delthis,$regexp,$roles) = @_;
703: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
704: my $refused = 1;
705: if (ref($roles) eq 'ARRAY') {
706: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
707: if (grep(/^\Q$role\E$/,@{$roles})) {
708: $refused = 0;
709: }
710: }
711: if ($refused) {
712: &logthis("<font color=\"blue\">WARNING: ".
713: "Attempt to delete from environment ".$delthis);
714: return 'error';
715: }
716: }
717: my $opened = open(my $env_file,'+<',$env{'user.environment'});
718: if ($opened
719: && &timed_flock($env_file,LOCK_EX)
720: &&
721: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
722: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
723: foreach my $key (keys(%disk_env)) {
724: if ($regexp) {
725: if ($key=~/^$delthis/) {
726: delete($env{$key});
727: delete($disk_env{$key});
728: }
729: } else {
730: if ($key=~/^\Q$delthis\E/) {
731: delete($env{$key});
732: delete($disk_env{$key});
733: }
734: }
735: }
736: untie(%disk_env);
737: }
738: return 'ok';
739: }
740:
741: sub get_env_multiple {
742: my ($name) = @_;
743: my @values;
744: if (defined($env{$name})) {
745: # exists is it an array
746: if (ref($env{$name})) {
747: @values=@{ $env{$name} };
748: } else {
749: $values[0]=$env{$name};
750: }
751: }
752: return(@values);
753: }
754:
755: # ------------------------------------------------------------------- Locking
756:
757: sub set_lock {
758: my ($text)=@_;
759: $locknum++;
760: my $id=$$.'-'.$locknum;
761: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
762: 'session.lock.'.$id => $text});
763: return $id;
764: }
765:
766: sub get_locks {
767: my $num=0;
768: my %texts=();
769: foreach my $lock (split(/\,/,$env{'session.locks'})) {
770: if ($lock=~/\w/) {
771: $num++;
772: $texts{$lock}=$env{'session.lock.'.$lock};
773: }
774: }
775: return ($num,%texts);
776: }
777:
778: sub remove_lock {
779: my ($id)=@_;
780: my $newlocks='';
781: foreach my $lock (split(/\,/,$env{'session.locks'})) {
782: if (($lock=~/\w/) && ($lock ne $id)) {
783: $newlocks.=','.$lock;
784: }
785: }
786: &appenv({'session.locks' => $newlocks});
787: &delenv('session.lock.'.$id);
788: }
789:
790: sub remove_all_locks {
791: my $activelocks=$env{'session.locks'};
792: foreach my $lock (split(/\,/,$env{'session.locks'})) {
793: if ($lock=~/\w/) {
794: &remove_lock($lock);
795: }
796: }
797: }
798:
799:
800: # ------------------------------------------ Find out current server userload
801: sub userload {
802: my $numusers=0;
803: {
804: opendir(LONIDS,$perlvar{'lonIDsDir'});
805: my $filename;
806: my $curtime=time;
807: while ($filename=readdir(LONIDS)) {
808: next if ($filename eq '.' || $filename eq '..');
809: next if ($filename =~ /publicuser_\d+\.id/);
810: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
811: if ($curtime-$mtime < 1800) { $numusers++; }
812: }
813: closedir(LONIDS);
814: }
815: my $userloadpercent=0;
816: my $maxuserload=$perlvar{'lonUserLoadLim'};
817: if ($maxuserload) {
818: $userloadpercent=100*$numusers/$maxuserload;
819: }
820: $userloadpercent=sprintf("%.2f",$userloadpercent);
821: return $userloadpercent;
822: }
823:
824: # ------------------------------ Find server with least workload from spare.tab
825:
826: sub spareserver {
827: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
828: my $spare_server;
829: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
830: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
831: : $userloadpercent;
832: my ($uint_dom,$remotesessions);
833: if (($udom ne '') && (&domain($udom) ne '')) {
834: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
835: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
836: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
837: $remotesessions = $udomdefaults{'remotesessions'};
838: }
839: my $spareshash = &this_host_spares($udom);
840: if (ref($spareshash) eq 'HASH') {
841: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
842: foreach my $try_server (@{ $spareshash->{'primary'} }) {
843: if ($uint_dom) {
844: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
845: $try_server));
846: }
847: ($spare_server, $lowest_load) =
848: &compare_server_load($try_server, $spare_server, $lowest_load);
849: }
850: }
851:
852: my $found_server = ($spare_server ne '' && $lowest_load < 100);
853:
854: if (!$found_server) {
855: if (ref($spareshash->{'default'}) eq 'ARRAY') {
856: foreach my $try_server (@{ $spareshash->{'default'} }) {
857: if ($uint_dom) {
858: next unless (&spare_can_host($udom,$uint_dom,
859: $remotesessions,$try_server));
860: }
861: ($spare_server, $lowest_load) =
862: &compare_server_load($try_server, $spare_server, $lowest_load);
863: }
864: }
865: }
866: }
867:
868: if (!$want_server_name) {
869: my $protocol = 'http';
870: if ($protocol{$spare_server} eq 'https') {
871: $protocol = $protocol{$spare_server};
872: }
873: if (defined($spare_server)) {
874: my $hostname = &hostname($spare_server);
875: if (defined($hostname)) {
876: $spare_server = $protocol.'://'.$hostname;
877: }
878: }
879: }
880: return $spare_server;
881: }
882:
883: sub compare_server_load {
884: my ($try_server, $spare_server, $lowest_load) = @_;
885:
886: my $loadans = &reply('load', $try_server);
887: my $userloadans = &reply('userload',$try_server);
888:
889: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
890: return ($spare_server, $lowest_load); #didn't get a number from the server
891: }
892:
893: my $load;
894: if ($loadans =~ /\d/) {
895: if ($userloadans =~ /\d/) {
896: #both are numbers, pick the bigger one
897: $load = ($loadans > $userloadans) ? $loadans
898: : $userloadans;
899: } else {
900: $load = $loadans;
901: }
902: } else {
903: $load = $userloadans;
904: }
905:
906: if (($load =~ /\d/) && ($load < $lowest_load)) {
907: $spare_server = $try_server;
908: $lowest_load = $load;
909: }
910: return ($spare_server,$lowest_load);
911: }
912:
913: # --------------------------- ask offload servers if user already has a session
914: sub find_existing_session {
915: my ($udom,$uname) = @_;
916: my $spareshash = &this_host_spares($udom);
917: if (ref($spareshash) eq 'HASH') {
918: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
919: foreach my $try_server (@{ $spareshash->{'primary'} }) {
920: return $try_server if (&has_user_session($try_server, $udom, $uname));
921: }
922: }
923: if (ref($spareshash->{'default'}) eq 'ARRAY') {
924: foreach my $try_server (@{ $spareshash->{'default'} }) {
925: return $try_server if (&has_user_session($try_server, $udom, $uname));
926: }
927: }
928: }
929: return;
930: }
931:
932: # -------------------------------- ask if server already has a session for user
933: sub has_user_session {
934: my ($lonid,$udom,$uname) = @_;
935: my $result = &reply(join(':','userhassession',
936: map {&escape($_)} ($udom,$uname)),$lonid);
937: return 1 if ($result eq 'ok');
938:
939: return 0;
940: }
941:
942: # --------- determine least loaded server in a user's domain which allows login
943:
944: sub choose_server {
945: my ($udom,$checkloginvia) = @_;
946: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
947: my %servers = &get_servers($udom);
948: my $lowest_load = 30000;
949: my ($login_host,$hostname,$portal_path,$isredirect);
950: foreach my $lonhost (keys(%servers)) {
951: my $loginvia;
952: if ($checkloginvia) {
953: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
954: if ($loginvia) {
955: my ($server,$path) = split(/:/,$loginvia);
956: ($login_host, $lowest_load) =
957: &compare_server_load($server, $login_host, $lowest_load);
958: if ($login_host eq $server) {
959: $portal_path = $path;
960: $isredirect = 1;
961: }
962: } else {
963: ($login_host, $lowest_load) =
964: &compare_server_load($lonhost, $login_host, $lowest_load);
965: if ($login_host eq $lonhost) {
966: $portal_path = '';
967: $isredirect = '';
968: }
969: }
970: } else {
971: ($login_host, $lowest_load) =
972: &compare_server_load($lonhost, $login_host, $lowest_load);
973: }
974: }
975: if ($login_host ne '') {
976: $hostname = &hostname($login_host);
977: }
978: return ($login_host,$hostname,$portal_path,$isredirect);
979: }
980:
981: # --------------------------------------------- Try to change a user's password
982:
983: sub changepass {
984: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
985: $currentpass = &escape($currentpass);
986: $newpass = &escape($newpass);
987: my $lonhost = $perlvar{'lonHostID'};
988: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
989: $server);
990: if (! $answer) {
991: &logthis("No reply on password change request to $server ".
992: "by $uname in domain $udom.");
993: } elsif ($answer =~ "^ok") {
994: &logthis("$uname in $udom successfully changed their password ".
995: "on $server.");
996: } elsif ($answer =~ "^pwchange_failure") {
997: &logthis("$uname in $udom was unable to change their password ".
998: "on $server. The action was blocked by either lcpasswd ".
999: "or pwchange");
1000: } elsif ($answer =~ "^non_authorized") {
1001: &logthis("$uname in $udom did not get their password correct when ".
1002: "attempting to change it on $server.");
1003: } elsif ($answer =~ "^auth_mode_error") {
1004: &logthis("$uname in $udom attempted to change their password despite ".
1005: "not being locally or internally authenticated on $server.");
1006: } elsif ($answer =~ "^unknown_user") {
1007: &logthis("$uname in $udom attempted to change their password ".
1008: "on $server but were unable to because $server is not ".
1009: "their home server.");
1010: } elsif ($answer =~ "^refused") {
1011: &logthis("$server refused to change $uname in $udom password because ".
1012: "it was sent an unencrypted request to change the password.");
1013: } elsif ($answer =~ "invalid_client") {
1014: &logthis("$server refused to change $uname in $udom password because ".
1015: "it was a reset by e-mail originating from an invalid server.");
1016: }
1017: return $answer;
1018: }
1019:
1020: # ----------------------- Try to determine user's current authentication scheme
1021:
1022: sub queryauthenticate {
1023: my ($uname,$udom)=@_;
1024: my $uhome=&homeserver($uname,$udom);
1025: if (!$uhome) {
1026: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1027: return 'no_host';
1028: }
1029: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1030: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1031: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1032: }
1033: return $answer;
1034: }
1035:
1036: # --------- Try to authenticate user from domain's lib servers (first this one)
1037:
1038: sub authenticate {
1039: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1040: $upass=&escape($upass);
1041: $uname= &LONCAPA::clean_username($uname);
1042: my $uhome=&homeserver($uname,$udom,1);
1043: my $newhome;
1044: if ((!$uhome) || ($uhome eq 'no_host')) {
1045: # Maybe the machine was offline and only re-appeared again recently?
1046: &reconlonc();
1047: # One more
1048: $uhome=&homeserver($uname,$udom,1);
1049: if (($uhome eq 'no_host') && $checkdefauth) {
1050: if (defined(&domain($udom,'primary'))) {
1051: $newhome=&domain($udom,'primary');
1052: }
1053: if ($newhome ne '') {
1054: $uhome = $newhome;
1055: }
1056: }
1057: if ((!$uhome) || ($uhome eq 'no_host')) {
1058: &logthis("User $uname at $udom is unknown in authenticate");
1059: return 'no_host';
1060: }
1061: }
1062: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1063: if ($answer eq 'authorized') {
1064: if ($newhome) {
1065: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1066: return 'no_account_on_host';
1067: } else {
1068: &logthis("User $uname at $udom authorized by $uhome");
1069: return $uhome;
1070: }
1071: }
1072: if ($answer eq 'non_authorized') {
1073: &logthis("User $uname at $udom rejected by $uhome");
1074: return 'no_host';
1075: }
1076: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1077: return 'no_host';
1078: }
1079:
1080: sub can_host_session {
1081: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1082: my $canhost = 1;
1083: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1084: if (ref($remotesessions) eq 'HASH') {
1085: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1086: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1087: $canhost = 0;
1088: } else {
1089: $canhost = 1;
1090: }
1091: }
1092: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1093: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1094: $canhost = 1;
1095: } else {
1096: $canhost = 0;
1097: }
1098: }
1099: if ($canhost) {
1100: if ($remotesessions->{'version'} ne '') {
1101: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1102: if ($reqmajor ne '' && $reqminor ne '') {
1103: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1104: my $major = $1;
1105: my $minor = $2;
1106: if (($major < $reqmajor ) ||
1107: (($major == $reqmajor) && ($minor < $reqminor))) {
1108: $canhost = 0;
1109: }
1110: } else {
1111: $canhost = 0;
1112: }
1113: }
1114: }
1115: }
1116: }
1117: if ($canhost) {
1118: if (ref($hostedsessions) eq 'HASH') {
1119: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1120: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1121: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1122: if (($uint_dom ne '') &&
1123: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1124: $canhost = 0;
1125: } else {
1126: $canhost = 1;
1127: }
1128: }
1129: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1130: if (($uint_dom ne '') &&
1131: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1132: $canhost = 1;
1133: } else {
1134: $canhost = 0;
1135: }
1136: }
1137: }
1138: }
1139: return $canhost;
1140: }
1141:
1142: sub spare_can_host {
1143: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1144: my $canhost=1;
1145: my @intdoms;
1146: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1147: if (ref($internet_names) eq 'ARRAY') {
1148: @intdoms = @{$internet_names};
1149: }
1150: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1151: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1152: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1153: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1154: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1155: $canhost = &can_host_session($udom,$try_server,$remoterev,
1156: $remotesessions,
1157: $defdomdefaults{'hostedsessions'});
1158: }
1159: return $canhost;
1160: }
1161:
1162: sub this_host_spares {
1163: my ($dom) = @_;
1164: my ($dom_in_use,$lonhost_in_use,$result);
1165: my @hosts = ¤t_machine_ids();
1166: foreach my $lonhost (@hosts) {
1167: if (&host_domain($lonhost) eq $dom) {
1168: $dom_in_use = $dom;
1169: $lonhost_in_use = $lonhost;
1170: last;
1171: }
1172: }
1173: if ($dom_in_use ne '') {
1174: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1175: }
1176: if (ref($result) ne 'HASH') {
1177: $lonhost_in_use = $perlvar{'lonHostID'};
1178: $dom_in_use = &host_domain($lonhost_in_use);
1179: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1180: if (ref($result) ne 'HASH') {
1181: $result = \%spareid;
1182: }
1183: }
1184: return $result;
1185: }
1186:
1187: sub spares_for_offload {
1188: my ($dom_in_use,$lonhost_in_use) = @_;
1189: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1190: if (defined($cached)) {
1191: return $result;
1192: } else {
1193: my $cachetime = 60*60*24;
1194: my %domconfig =
1195: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1196: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1197: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1198: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1199: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1200: }
1201: }
1202: }
1203: }
1204: return;
1205: }
1206:
1207: sub get_lonbalancer_config {
1208: my ($servers) = @_;
1209: my ($currbalancer,$currtargets);
1210: if (ref($servers) eq 'HASH') {
1211: foreach my $server (keys(%{$servers})) {
1212: my %what = (
1213: spareid => 1,
1214: perlvar => 1,
1215: );
1216: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1217: if ($result eq 'ok') {
1218: if (ref($returnhash) eq 'HASH') {
1219: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1220: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1221: $currbalancer = $server;
1222: $currtargets = {};
1223: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1224: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1225: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1226: }
1227: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1228: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1229: }
1230: }
1231: last;
1232: }
1233: }
1234: }
1235: }
1236: }
1237: }
1238: return ($currbalancer,$currtargets);
1239: }
1240:
1241: sub check_loadbalancing {
1242: my ($uname,$udom) = @_;
1243: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1244: $rule_in_effect,$offloadto,$otherserver);
1245: my $lonhost = $perlvar{'lonHostID'};
1246: my @hosts = ¤t_machine_ids();
1247: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1248: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1249: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1250: my $serverhomedom = &host_domain($lonhost);
1251:
1252: my $cachetime = 60*60*24;
1253:
1254: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1255: $dom_in_use = $udom;
1256: $homeintdom = 1;
1257: } else {
1258: $dom_in_use = $serverhomedom;
1259: }
1260: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1261: unless (defined($cached)) {
1262: my %domconfig =
1263: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1264: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1265: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1266: }
1267: }
1268: if (ref($result) eq 'HASH') {
1269: ($is_balancer,$currtargets,$currrules) =
1270: &check_balancer_result($result,@hosts);
1271: if ($is_balancer) {
1272: if (ref($currrules) eq 'HASH') {
1273: if ($homeintdom) {
1274: if ($uname ne '') {
1275: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1276: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1277: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1278: $rule_in_effect = $currrules->{'_LC_author'};
1279: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1280: $rule_in_effect = $currrules->{'_LC_adv'}
1281: }
1282: }
1283: if ($rule_in_effect eq '') {
1284: my %userenv = &userenvironment($udom,$uname,'inststatus');
1285: if ($userenv{'inststatus'} ne '') {
1286: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1287: my ($othertitle,$usertypes,$types) =
1288: &Apache::loncommon::sorted_inst_types($udom);
1289: if (ref($types) eq 'ARRAY') {
1290: foreach my $type (@{$types}) {
1291: if (grep(/^\Q$type\E$/,@statuses)) {
1292: if (exists($currrules->{$type})) {
1293: $rule_in_effect = $currrules->{$type};
1294: }
1295: }
1296: }
1297: }
1298: } else {
1299: if (exists($currrules->{'default'})) {
1300: $rule_in_effect = $currrules->{'default'};
1301: }
1302: }
1303: }
1304: } else {
1305: if (exists($currrules->{'default'})) {
1306: $rule_in_effect = $currrules->{'default'};
1307: }
1308: }
1309: } else {
1310: if ($currrules->{'_LC_external'} ne '') {
1311: $rule_in_effect = $currrules->{'_LC_external'};
1312: }
1313: }
1314: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1315: $uname,$udom);
1316: }
1317: }
1318: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1319: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1320: unless (defined($cached)) {
1321: my %domconfig =
1322: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1323: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1324: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1325: }
1326: }
1327: if (ref($result) eq 'HASH') {
1328: ($is_balancer,$currtargets,$currrules) =
1329: &check_balancer_result($result,@hosts);
1330: if ($is_balancer) {
1331: if (ref($currrules) eq 'HASH') {
1332: if ($currrules->{'_LC_internetdom'} ne '') {
1333: $rule_in_effect = $currrules->{'_LC_internetdom'};
1334: }
1335: }
1336: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1337: $uname,$udom);
1338: }
1339: } else {
1340: if ($perlvar{'lonBalancer'} eq 'yes') {
1341: $is_balancer = 1;
1342: $offloadto = &this_host_spares($dom_in_use);
1343: }
1344: }
1345: } else {
1346: if ($perlvar{'lonBalancer'} eq 'yes') {
1347: $is_balancer = 1;
1348: $offloadto = &this_host_spares($dom_in_use);
1349: }
1350: }
1351: if ($is_balancer) {
1352: my $lowest_load = 30000;
1353: if (ref($offloadto) eq 'HASH') {
1354: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1355: foreach my $try_server (@{$offloadto->{'primary'}}) {
1356: ($otherserver,$lowest_load) =
1357: &compare_server_load($try_server,$otherserver,$lowest_load);
1358: }
1359: }
1360: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1361:
1362: if (!$found_server) {
1363: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1364: foreach my $try_server (@{$offloadto->{'default'}}) {
1365: ($otherserver,$lowest_load) =
1366: &compare_server_load($try_server,$otherserver,$lowest_load);
1367: }
1368: }
1369: }
1370: } elsif (ref($offloadto) eq 'ARRAY') {
1371: if (@{$offloadto} == 1) {
1372: $otherserver = $offloadto->[0];
1373: } elsif (@{$offloadto} > 1) {
1374: foreach my $try_server (@{$offloadto}) {
1375: ($otherserver,$lowest_load) =
1376: &compare_server_load($try_server,$otherserver,$lowest_load);
1377: }
1378: }
1379: }
1380: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1381: $is_balancer = 0;
1382: if ($uname ne '' && $udom ne '') {
1383: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1384:
1385: &appenv({'user.loadbalexempt' => $lonhost,
1386: 'user.loadbalcheck.time' => time});
1387: }
1388: }
1389: }
1390: }
1391: return ($is_balancer,$otherserver);
1392: }
1393:
1394: sub check_balancer_result {
1395: my ($result,@hosts) = @_;
1396: my ($is_balancer,$currtargets,$currrules);
1397: if (ref($result) eq 'HASH') {
1398: if ($result->{'lonhost'} ne '') {
1399: my $currbalancer = $result->{'lonhost'};
1400: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1401: $is_balancer = 1;
1402: $currtargets = $result->{'targets'};
1403: $currrules = $result->{'rules'};
1404: }
1405: } else {
1406: foreach my $key (keys(%{$result})) {
1407: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1408: (ref($result->{$key}) eq 'HASH')) {
1409: $is_balancer = 1;
1410: $currrules = $result->{$key}{'rules'};
1411: $currtargets = $result->{$key}{'targets'};
1412: last;
1413: }
1414: }
1415: }
1416: }
1417: return ($is_balancer,$currtargets,$currrules);
1418: }
1419:
1420: sub get_loadbalancer_targets {
1421: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1422: my $offloadto;
1423: if ($rule_in_effect eq 'none') {
1424: return [$perlvar{'lonHostID'}];
1425: } elsif ($rule_in_effect eq '') {
1426: $offloadto = $currtargets;
1427: } else {
1428: if ($rule_in_effect eq 'homeserver') {
1429: my $homeserver = &homeserver($uname,$udom);
1430: if ($homeserver ne 'no_host') {
1431: $offloadto = [$homeserver];
1432: }
1433: } elsif ($rule_in_effect eq 'externalbalancer') {
1434: my %domconfig =
1435: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1436: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1437: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1438: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1439: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1440: }
1441: }
1442: } else {
1443: my %servers = &internet_dom_servers($udom);
1444: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1445: if (&hostname($remotebalancer) ne '') {
1446: $offloadto = [$remotebalancer];
1447: }
1448: }
1449: } elsif (&hostname($rule_in_effect) ne '') {
1450: $offloadto = [$rule_in_effect];
1451: }
1452: }
1453: return $offloadto;
1454: }
1455:
1456: sub internet_dom_servers {
1457: my ($dom) = @_;
1458: my (%uniqservers,%servers);
1459: my $primaryserver = &hostname(&domain($dom,'primary'));
1460: my @machinedoms = &machine_domains($primaryserver);
1461: foreach my $mdom (@machinedoms) {
1462: my %currservers = %servers;
1463: my %server = &get_servers($mdom);
1464: %servers = (%currservers,%server);
1465: }
1466: my %by_hostname;
1467: foreach my $id (keys(%servers)) {
1468: push(@{$by_hostname{$servers{$id}}},$id);
1469: }
1470: foreach my $hostname (sort(keys(%by_hostname))) {
1471: if (@{$by_hostname{$hostname}} > 1) {
1472: my $match = 0;
1473: foreach my $id (@{$by_hostname{$hostname}}) {
1474: if (&host_domain($id) eq $dom) {
1475: $uniqservers{$id} = $hostname;
1476: $match = 1;
1477: }
1478: }
1479: unless ($match) {
1480: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1481: }
1482: } else {
1483: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1484: }
1485: }
1486: return %uniqservers;
1487: }
1488:
1489: # ---------------------- Find the homebase for a user from domain's lib servers
1490:
1491: my %homecache;
1492: sub homeserver {
1493: my ($uname,$udom,$ignoreBadCache)=@_;
1494: my $index="$uname:$udom";
1495:
1496: if (exists($homecache{$index})) { return $homecache{$index}; }
1497:
1498: my %servers = &get_servers($udom,'library');
1499: foreach my $tryserver (keys(%servers)) {
1500: next if ($ignoreBadCache ne 'true' &&
1501: exists($badServerCache{$tryserver}));
1502:
1503: my $answer=reply("home:$udom:$uname",$tryserver);
1504: if ($answer eq 'found') {
1505: delete($badServerCache{$tryserver});
1506: return $homecache{$index}=$tryserver;
1507: } elsif ($answer eq 'no_host') {
1508: $badServerCache{$tryserver}=1;
1509: }
1510: }
1511: return 'no_host';
1512: }
1513:
1514: # ------------------------------------- Find the usernames behind a list of IDs
1515:
1516: sub idget {
1517: my ($udom,@ids)=@_;
1518: my %returnhash=();
1519:
1520: my %servers = &get_servers($udom,'library');
1521: foreach my $tryserver (keys(%servers)) {
1522: my $idlist=join('&',@ids);
1523: $idlist=~tr/A-Z/a-z/;
1524: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1525: my @answer=();
1526: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1527: @answer=split(/\&/,$reply);
1528: } ;
1529: my $i;
1530: for ($i=0;$i<=$#ids;$i++) {
1531: if ($answer[$i]) {
1532: $returnhash{$ids[$i]}=$answer[$i];
1533: }
1534: }
1535: }
1536: return %returnhash;
1537: }
1538:
1539: # ------------------------------------- Find the IDs behind a list of usernames
1540:
1541: sub idrget {
1542: my ($udom,@unames)=@_;
1543: my %returnhash=();
1544: foreach my $uname (@unames) {
1545: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1546: }
1547: return %returnhash;
1548: }
1549:
1550: # ------------------------------- Store away a list of names and associated IDs
1551:
1552: sub idput {
1553: my ($udom,%ids)=@_;
1554: my %servers=();
1555: foreach my $uname (keys(%ids)) {
1556: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1557: my $uhom=&homeserver($uname,$udom);
1558: if ($uhom ne 'no_host') {
1559: my $id=&escape($ids{$uname});
1560: $id=~tr/A-Z/a-z/;
1561: my $esc_unam=&escape($uname);
1562: if ($servers{$uhom}) {
1563: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1564: } else {
1565: $servers{$uhom}=$id.'='.$esc_unam;
1566: }
1567: }
1568: }
1569: foreach my $server (keys(%servers)) {
1570: &critical('idput:'.$udom.':'.$servers{$server},$server);
1571: }
1572: }
1573:
1574: # ------------------------------dump from db file owned by domainconfig user
1575: sub dump_dom {
1576: my ($namespace, $udom, $regexp) = @_;
1577:
1578: $udom ||= $env{'user.domain'};
1579:
1580: return () unless $udom;
1581:
1582: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1583: }
1584:
1585: # ------------------------------------------ get items from domain db files
1586:
1587: sub get_dom {
1588: my ($namespace,$storearr,$udom,$uhome)=@_;
1589: my $items='';
1590: foreach my $item (@$storearr) {
1591: $items.=&escape($item).'&';
1592: }
1593: $items=~s/\&$//;
1594: if (!$udom) {
1595: $udom=$env{'user.domain'};
1596: if (defined(&domain($udom,'primary'))) {
1597: $uhome=&domain($udom,'primary');
1598: } else {
1599: undef($uhome);
1600: }
1601: } else {
1602: if (!$uhome) {
1603: if (defined(&domain($udom,'primary'))) {
1604: $uhome=&domain($udom,'primary');
1605: }
1606: }
1607: }
1608: if ($udom && $uhome && ($uhome ne 'no_host')) {
1609: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1610: my %returnhash;
1611: if ($rep eq '' || $rep =~ /^error: 2 /) {
1612: return %returnhash;
1613: }
1614: my @pairs=split(/\&/,$rep);
1615: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1616: return @pairs;
1617: }
1618: my $i=0;
1619: foreach my $item (@$storearr) {
1620: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1621: $i++;
1622: }
1623: return %returnhash;
1624: } else {
1625: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1626: }
1627: }
1628:
1629: # -------------------------------------------- put items in domain db files
1630:
1631: sub put_dom {
1632: my ($namespace,$storehash,$udom,$uhome)=@_;
1633: if (!$udom) {
1634: $udom=$env{'user.domain'};
1635: if (defined(&domain($udom,'primary'))) {
1636: $uhome=&domain($udom,'primary');
1637: } else {
1638: undef($uhome);
1639: }
1640: } else {
1641: if (!$uhome) {
1642: if (defined(&domain($udom,'primary'))) {
1643: $uhome=&domain($udom,'primary');
1644: }
1645: }
1646: }
1647: if ($udom && $uhome && ($uhome ne 'no_host')) {
1648: my $items='';
1649: foreach my $item (keys(%$storehash)) {
1650: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1651: }
1652: $items=~s/\&$//;
1653: return &reply("putdom:$udom:$namespace:$items",$uhome);
1654: } else {
1655: &logthis("put_dom failed - no homeserver and/or domain");
1656: }
1657: }
1658:
1659: # --------------------- newput for items in db file owned by domainconfig user
1660: sub newput_dom {
1661: my ($namespace,$storehash,$udom) = @_;
1662: my $result;
1663: if (!$udom) {
1664: $udom=$env{'user.domain'};
1665: }
1666: if ($udom) {
1667: my $uname = &get_domainconfiguser($udom);
1668: $result = &newput($namespace,$storehash,$udom,$uname);
1669: }
1670: return $result;
1671: }
1672:
1673: # --------------------- delete for items in db file owned by domainconfig user
1674: sub del_dom {
1675: my ($namespace,$storearr,$udom)=@_;
1676: if (ref($storearr) eq 'ARRAY') {
1677: if (!$udom) {
1678: $udom=$env{'user.domain'};
1679: }
1680: if ($udom) {
1681: my $uname = &get_domainconfiguser($udom);
1682: return &del($namespace,$storearr,$udom,$uname);
1683: }
1684: }
1685: }
1686:
1687: # ----------------------------------construct domainconfig user for a domain
1688: sub get_domainconfiguser {
1689: my ($udom) = @_;
1690: return $udom.'-domainconfig';
1691: }
1692:
1693: sub retrieve_inst_usertypes {
1694: my ($udom) = @_;
1695: my (%returnhash,@order);
1696: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1697: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1698: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1699: %returnhash = %{$domdefs{'inststatustypes'}};
1700: @order = @{$domdefs{'inststatusorder'}};
1701: } else {
1702: if (defined(&domain($udom,'primary'))) {
1703: my $uhome=&domain($udom,'primary');
1704: my $rep=&reply("inst_usertypes:$udom",$uhome);
1705: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1706: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1707: return (\%returnhash,\@order);
1708: }
1709: my ($hashitems,$orderitems) = split(/:/,$rep);
1710: my @pairs=split(/\&/,$hashitems);
1711: foreach my $item (@pairs) {
1712: my ($key,$value)=split(/=/,$item,2);
1713: $key = &unescape($key);
1714: next if ($key =~ /^error: 2 /);
1715: $returnhash{$key}=&thaw_unescape($value);
1716: }
1717: my @esc_order = split(/\&/,$orderitems);
1718: foreach my $item (@esc_order) {
1719: push(@order,&unescape($item));
1720: }
1721: } else {
1722: &logthis("get_dom failed - no primary domain server for $udom");
1723: }
1724: }
1725: return (\%returnhash,\@order);
1726: }
1727:
1728: sub is_domainimage {
1729: my ($url) = @_;
1730: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1731: if (&domain($1) ne '') {
1732: return '1';
1733: }
1734: }
1735: return;
1736: }
1737:
1738: sub inst_directory_query {
1739: my ($srch) = @_;
1740: my $udom = $srch->{'srchdomain'};
1741: my %results;
1742: my $homeserver = &domain($udom,'primary');
1743: my $outcome;
1744: if ($homeserver ne '') {
1745: my $queryid=&reply("querysend:instdirsearch:".
1746: &escape($srch->{'srchby'}).':'.
1747: &escape($srch->{'srchterm'}).':'.
1748: &escape($srch->{'srchtype'}),$homeserver);
1749: my $host=&hostname($homeserver);
1750: if ($queryid !~/^\Q$host\E\_/) {
1751: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1752: return;
1753: }
1754: my $response = &get_query_reply($queryid);
1755: my $maxtries = 5;
1756: my $tries = 1;
1757: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1758: $response = &get_query_reply($queryid);
1759: $tries ++;
1760: }
1761:
1762: if (!&error($response) && $response ne 'refused') {
1763: if ($response eq 'unavailable') {
1764: $outcome = $response;
1765: } else {
1766: $outcome = 'ok';
1767: my @matches = split(/\n/,$response);
1768: foreach my $match (@matches) {
1769: my ($key,$value) = split(/=/,$match);
1770: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1771: }
1772: }
1773: }
1774: }
1775: return ($outcome,%results);
1776: }
1777:
1778: sub usersearch {
1779: my ($srch) = @_;
1780: my $dom = $srch->{'srchdomain'};
1781: my %results;
1782: my %libserv = &all_library();
1783: my $query = 'usersearch';
1784: foreach my $tryserver (keys(%libserv)) {
1785: if (&host_domain($tryserver) eq $dom) {
1786: my $host=&hostname($tryserver);
1787: my $queryid=
1788: &reply("querysend:".&escape($query).':'.
1789: &escape($srch->{'srchby'}).':'.
1790: &escape($srch->{'srchtype'}).':'.
1791: &escape($srch->{'srchterm'}),$tryserver);
1792: if ($queryid !~/^\Q$host\E\_/) {
1793: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1794: next;
1795: }
1796: my $reply = &get_query_reply($queryid);
1797: my $maxtries = 1;
1798: my $tries = 1;
1799: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1800: $reply = &get_query_reply($queryid);
1801: $tries ++;
1802: }
1803: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1804: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1805: } else {
1806: my @matches;
1807: if ($reply =~ /\n/) {
1808: @matches = split(/\n/,$reply);
1809: } else {
1810: @matches = split(/\&/,$reply);
1811: }
1812: foreach my $match (@matches) {
1813: my ($uname,$udom,%userhash);
1814: foreach my $entry (split(/:/,$match)) {
1815: my ($key,$value) =
1816: map {&unescape($_);} split(/=/,$entry);
1817: $userhash{$key} = $value;
1818: if ($key eq 'username') {
1819: $uname = $value;
1820: } elsif ($key eq 'domain') {
1821: $udom = $value;
1822: }
1823: }
1824: $results{$uname.':'.$udom} = \%userhash;
1825: }
1826: }
1827: }
1828: }
1829: return %results;
1830: }
1831:
1832: sub get_instuser {
1833: my ($udom,$uname,$id) = @_;
1834: my $homeserver = &domain($udom,'primary');
1835: my ($outcome,%results);
1836: if ($homeserver ne '') {
1837: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1838: &escape($id).':'.&escape($udom),$homeserver);
1839: my $host=&hostname($homeserver);
1840: if ($queryid !~/^\Q$host\E\_/) {
1841: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1842: return;
1843: }
1844: my $response = &get_query_reply($queryid);
1845: my $maxtries = 5;
1846: my $tries = 1;
1847: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1848: $response = &get_query_reply($queryid);
1849: $tries ++;
1850: }
1851: if (!&error($response) && $response ne 'refused') {
1852: if ($response eq 'unavailable') {
1853: $outcome = $response;
1854: } else {
1855: $outcome = 'ok';
1856: my @matches = split(/\n/,$response);
1857: foreach my $match (@matches) {
1858: my ($key,$value) = split(/=/,$match);
1859: $results{&unescape($key)} = &thaw_unescape($value);
1860: }
1861: }
1862: }
1863: }
1864: my %userinfo;
1865: if (ref($results{$uname}) eq 'HASH') {
1866: %userinfo = %{$results{$uname}};
1867: }
1868: return ($outcome,%userinfo);
1869: }
1870:
1871: sub inst_rulecheck {
1872: my ($udom,$uname,$id,$item,$rules) = @_;
1873: my %returnhash;
1874: if ($udom ne '') {
1875: if (ref($rules) eq 'ARRAY') {
1876: @{$rules} = map {&escape($_);} (@{$rules});
1877: my $rulestr = join(':',@{$rules});
1878: my $homeserver=&domain($udom,'primary');
1879: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1880: my $response;
1881: if ($item eq 'username') {
1882: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1883: ':'.&escape($uname).':'.$rulestr,
1884: $homeserver));
1885: } elsif ($item eq 'id') {
1886: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1887: ':'.&escape($id).':'.$rulestr,
1888: $homeserver));
1889: } elsif ($item eq 'selfcreate') {
1890: $response=&unescape(&reply('instselfcreatecheck:'.
1891: &escape($udom).':'.&escape($uname).
1892: ':'.$rulestr,$homeserver));
1893: }
1894: if ($response ne 'refused') {
1895: my @pairs=split(/\&/,$response);
1896: foreach my $item (@pairs) {
1897: my ($key,$value)=split(/=/,$item,2);
1898: $key = &unescape($key);
1899: next if ($key =~ /^error: 2 /);
1900: $returnhash{$key}=&thaw_unescape($value);
1901: }
1902: }
1903: }
1904: }
1905: }
1906: return %returnhash;
1907: }
1908:
1909: sub inst_userrules {
1910: my ($udom,$check) = @_;
1911: my (%ruleshash,@ruleorder);
1912: if ($udom ne '') {
1913: my $homeserver=&domain($udom,'primary');
1914: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1915: my $response;
1916: if ($check eq 'id') {
1917: $response=&reply('instidrules:'.&escape($udom),
1918: $homeserver);
1919: } elsif ($check eq 'email') {
1920: $response=&reply('instemailrules:'.&escape($udom),
1921: $homeserver);
1922: } else {
1923: $response=&reply('instuserrules:'.&escape($udom),
1924: $homeserver);
1925: }
1926: if (($response ne 'refused') && ($response ne 'error') &&
1927: ($response ne 'unknown_cmd') &&
1928: ($response ne 'no_such_host')) {
1929: my ($hashitems,$orderitems) = split(/:/,$response);
1930: my @pairs=split(/\&/,$hashitems);
1931: foreach my $item (@pairs) {
1932: my ($key,$value)=split(/=/,$item,2);
1933: $key = &unescape($key);
1934: next if ($key =~ /^error: 2 /);
1935: $ruleshash{$key}=&thaw_unescape($value);
1936: }
1937: my @esc_order = split(/\&/,$orderitems);
1938: foreach my $item (@esc_order) {
1939: push(@ruleorder,&unescape($item));
1940: }
1941: }
1942: }
1943: }
1944: return (\%ruleshash,\@ruleorder);
1945: }
1946:
1947: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1948:
1949: sub get_domain_defaults {
1950: my ($domain) = @_;
1951: my $cachetime = 60*60*24;
1952: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1953: if (defined($cached)) {
1954: if (ref($result) eq 'HASH') {
1955: return %{$result};
1956: }
1957: }
1958: my %domdefaults;
1959: my %domconfig =
1960: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1961: 'requestcourses','inststatus',
1962: 'coursedefaults','usersessions',
1963: 'requestauthor'],$domain);
1964: if (ref($domconfig{'defaults'}) eq 'HASH') {
1965: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1966: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1967: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1968: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1969: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1970: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1971: } else {
1972: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1973: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1974: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1975: }
1976: if (ref($domconfig{'quotas'}) eq 'HASH') {
1977: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1978: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1979: } else {
1980: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1981: }
1982: my @usertools = ('aboutme','blog','webdav','portfolio');
1983: foreach my $item (@usertools) {
1984: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1985: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1986: }
1987: }
1988: }
1989: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1990: foreach my $item ('official','unofficial','community') {
1991: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1992: }
1993: }
1994: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
1995: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
1996: }
1997: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1998: foreach my $item ('inststatustypes','inststatusorder') {
1999: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2000: }
2001: }
2002: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2003: foreach my $item ('canuse_pdfforms') {
2004: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
2005: }
2006: }
2007: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2008: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2009: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2010: }
2011: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2012: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2013: }
2014: }
2015: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
2016: $cachetime);
2017: return %domdefaults;
2018: }
2019:
2020: # --------------------------------------------------- Assign a key to a student
2021:
2022: sub assign_access_key {
2023: #
2024: # a valid key looks like uname:udom#comments
2025: # comments are being appended
2026: #
2027: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2028: $kdom=
2029: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2030: $knum=
2031: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2032: $cdom=
2033: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2034: $cnum=
2035: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2036: $udom=$env{'user.name'} unless (defined($udom));
2037: $uname=$env{'user.domain'} unless (defined($uname));
2038: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2039: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2040: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2041: # assigned to this person
2042: # - this should not happen,
2043: # unless something went wrong
2044: # the first time around
2045: # ready to assign
2046: $logentry=$1.'; '.$logentry;
2047: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2048: $kdom,$knum) eq 'ok') {
2049: # key now belongs to user
2050: my $envkey='key.'.$cdom.'_'.$cnum;
2051: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2052: &appenv({'environment.'.$envkey => $ckey});
2053: return 'ok';
2054: } else {
2055: return
2056: 'error: Count not permanently assign key, will need to be re-entered later.';
2057: }
2058: } else {
2059: return 'error: Could not assign key, try again later.';
2060: }
2061: } elsif (!$existing{$ckey}) {
2062: # the key does not exist
2063: return 'error: The key does not exist';
2064: } else {
2065: # the key is somebody else's
2066: return 'error: The key is already in use';
2067: }
2068: }
2069:
2070: # ------------------------------------------ put an additional comment on a key
2071:
2072: sub comment_access_key {
2073: #
2074: # a valid key looks like uname:udom#comments
2075: # comments are being appended
2076: #
2077: my ($ckey,$cdom,$cnum,$logentry)=@_;
2078: $cdom=
2079: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2080: $cnum=
2081: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2082: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2083: if ($existing{$ckey}) {
2084: $existing{$ckey}.='; '.$logentry;
2085: # ready to assign
2086: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2087: $cdom,$cnum) eq 'ok') {
2088: return 'ok';
2089: } else {
2090: return 'error: Count not store comment.';
2091: }
2092: } else {
2093: # the key does not exist
2094: return 'error: The key does not exist';
2095: }
2096: }
2097:
2098: # ------------------------------------------------------ Generate a set of keys
2099:
2100: sub generate_access_keys {
2101: my ($number,$cdom,$cnum,$logentry)=@_;
2102: $cdom=
2103: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2104: $cnum=
2105: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2106: unless (&allowed('mky',$cdom)) { return 0; }
2107: unless (($cdom) && ($cnum)) { return 0; }
2108: if ($number>10000) { return 0; }
2109: sleep(2); # make sure don't get same seed twice
2110: srand(time()^($$+($$<<15))); # from "Programming Perl"
2111: my $total=0;
2112: for (my $i=1;$i<=$number;$i++) {
2113: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2114: sprintf("%lx",int(100000*rand)).'-'.
2115: sprintf("%lx",int(100000*rand));
2116: $newkey=~s/1/g/g; # folks mix up 1 and l
2117: $newkey=~s/0/h/g; # and also 0 and O
2118: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2119: if ($existing{$newkey}) {
2120: $i--;
2121: } else {
2122: if (&put('accesskeys',
2123: { $newkey => '# generated '.localtime().
2124: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2125: '; '.$logentry },
2126: $cdom,$cnum) eq 'ok') {
2127: $total++;
2128: }
2129: }
2130: }
2131: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2132: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2133: return $total;
2134: }
2135:
2136: # ------------------------------------------------------- Validate an accesskey
2137:
2138: sub validate_access_key {
2139: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2140: $cdom=
2141: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2142: $cnum=
2143: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2144: $udom=$env{'user.domain'} unless (defined($udom));
2145: $uname=$env{'user.name'} unless (defined($uname));
2146: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2147: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2148: }
2149:
2150: # ------------------------------------- Find the section of student in a course
2151: sub devalidate_getsection_cache {
2152: my ($udom,$unam,$courseid)=@_;
2153: my $hashid="$udom:$unam:$courseid";
2154: &devalidate_cache_new('getsection',$hashid);
2155: }
2156:
2157: sub courseid_to_courseurl {
2158: my ($courseid) = @_;
2159: #already url style courseid
2160: return $courseid if ($courseid =~ m{^/});
2161:
2162: if (exists($env{'course.'.$courseid.'.num'})) {
2163: my $cnum = $env{'course.'.$courseid.'.num'};
2164: my $cdom = $env{'course.'.$courseid.'.domain'};
2165: return "/$cdom/$cnum";
2166: }
2167:
2168: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2169: if (exists($courseinfo{'num'})) {
2170: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2171: }
2172:
2173: return undef;
2174: }
2175:
2176: sub getsection {
2177: my ($udom,$unam,$courseid)=@_;
2178: my $cachetime=1800;
2179:
2180: my $hashid="$udom:$unam:$courseid";
2181: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2182: if (defined($cached)) { return $result; }
2183:
2184: my %Pending;
2185: my %Expired;
2186: #
2187: # Each role can either have not started yet (pending), be active,
2188: # or have expired.
2189: #
2190: # If there is an active role, we are done.
2191: #
2192: # If there is more than one role which has not started yet,
2193: # choose the one which will start sooner
2194: # If there is one role which has not started yet, return it.
2195: #
2196: # If there is more than one expired role, choose the one which ended last.
2197: # If there is a role which has expired, return it.
2198: #
2199: $courseid = &courseid_to_courseurl($courseid);
2200: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2201: foreach my $key (keys(%roleshash)) {
2202: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2203: my $section=$1;
2204: if ($key eq $courseid.'_st') { $section=''; }
2205: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2206: my $now=time;
2207: if (defined($end) && $end && ($now > $end)) {
2208: $Expired{$end}=$section;
2209: next;
2210: }
2211: if (defined($start) && $start && ($now < $start)) {
2212: $Pending{$start}=$section;
2213: next;
2214: }
2215: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2216: }
2217: #
2218: # Presumedly there will be few matching roles from the above
2219: # loop and the sorting time will be negligible.
2220: if (scalar(keys(%Pending))) {
2221: my ($time) = sort {$a <=> $b} keys(%Pending);
2222: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2223: }
2224: if (scalar(keys(%Expired))) {
2225: my @sorted = sort {$a <=> $b} keys(%Expired);
2226: my $time = pop(@sorted);
2227: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2228: }
2229: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2230: }
2231:
2232: sub save_cache {
2233: &purge_remembered();
2234: #&Apache::loncommon::validate_page();
2235: undef(%env);
2236: undef($env_loaded);
2237: }
2238:
2239: my $to_remember=-1;
2240: my %remembered;
2241: my %accessed;
2242: my $kicks=0;
2243: my $hits=0;
2244: sub make_key {
2245: my ($name,$id) = @_;
2246: if (length($id) > 65
2247: && length(&escape($id)) > 200) {
2248: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2249: }
2250: return &escape($name.':'.$id);
2251: }
2252:
2253: sub devalidate_cache_new {
2254: my ($name,$id,$debug) = @_;
2255: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2256: $id=&make_key($name,$id);
2257: $memcache->delete($id);
2258: delete($remembered{$id});
2259: delete($accessed{$id});
2260: }
2261:
2262: sub is_cached_new {
2263: my ($name,$id,$debug) = @_;
2264: $id=&make_key($name,$id);
2265: if (exists($remembered{$id})) {
2266: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2267: $accessed{$id}=[&gettimeofday()];
2268: $hits++;
2269: return ($remembered{$id},1);
2270: }
2271: my $value = $memcache->get($id);
2272: if (!(defined($value))) {
2273: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2274: return (undef,undef);
2275: }
2276: if ($value eq '__undef__') {
2277: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2278: $value=undef;
2279: }
2280: &make_room($id,$value,$debug);
2281: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2282: return ($value,1);
2283: }
2284:
2285: sub do_cache_new {
2286: my ($name,$id,$value,$time,$debug) = @_;
2287: $id=&make_key($name,$id);
2288: my $setvalue=$value;
2289: if (!defined($setvalue)) {
2290: $setvalue='__undef__';
2291: }
2292: if (!defined($time) ) {
2293: $time=600;
2294: }
2295: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2296: my $result = $memcache->set($id,$setvalue,$time);
2297: if (! $result) {
2298: &logthis("caching of id -> $id failed");
2299: $memcache->disconnect_all();
2300: }
2301: # need to make a copy of $value
2302: &make_room($id,$value,$debug);
2303: return $value;
2304: }
2305:
2306: sub make_room {
2307: my ($id,$value,$debug)=@_;
2308:
2309: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2310: : $value;
2311: if ($to_remember<0) { return; }
2312: $accessed{$id}=[&gettimeofday()];
2313: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2314: my $to_kick;
2315: my $max_time=0;
2316: foreach my $other (keys(%accessed)) {
2317: if (&tv_interval($accessed{$other}) > $max_time) {
2318: $to_kick=$other;
2319: $max_time=&tv_interval($accessed{$other});
2320: }
2321: }
2322: delete($remembered{$to_kick});
2323: delete($accessed{$to_kick});
2324: $kicks++;
2325: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2326: return;
2327: }
2328:
2329: sub purge_remembered {
2330: #&logthis("Tossing ".scalar(keys(%remembered)));
2331: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2332: undef(%remembered);
2333: undef(%accessed);
2334: }
2335: # ------------------------------------- Read an entry from a user's environment
2336:
2337: sub userenvironment {
2338: my ($udom,$unam,@what)=@_;
2339: my $items;
2340: foreach my $item (@what) {
2341: $items.=&escape($item).'&';
2342: }
2343: $items=~s/\&$//;
2344: my %returnhash=();
2345: my $uhome = &homeserver($unam,$udom);
2346: unless ($uhome eq 'no_host') {
2347: my @answer=split(/\&/,
2348: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2349: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2350: return %returnhash;
2351: }
2352: my $i;
2353: for ($i=0;$i<=$#what;$i++) {
2354: $returnhash{$what[$i]}=&unescape($answer[$i]);
2355: }
2356: }
2357: return %returnhash;
2358: }
2359:
2360: # ---------------------------------------------------------- Get a studentphoto
2361: sub studentphoto {
2362: my ($udom,$unam,$ext) = @_;
2363: my $home=&Apache::lonnet::homeserver($unam,$udom);
2364: if (defined($env{'request.course.id'})) {
2365: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2366: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2367: return(&retrievestudentphoto($udom,$unam,$ext));
2368: } else {
2369: my ($result,$perm_reqd)=
2370: &Apache::lonnet::auto_photo_permission($unam,$udom);
2371: if ($result eq 'ok') {
2372: if (!($perm_reqd eq 'yes')) {
2373: return(&retrievestudentphoto($udom,$unam,$ext));
2374: }
2375: }
2376: }
2377: }
2378: } else {
2379: my ($result,$perm_reqd) =
2380: &Apache::lonnet::auto_photo_permission($unam,$udom);
2381: if ($result eq 'ok') {
2382: if (!($perm_reqd eq 'yes')) {
2383: return(&retrievestudentphoto($udom,$unam,$ext));
2384: }
2385: }
2386: }
2387: return '/adm/lonKaputt/lonlogo_broken.gif';
2388: }
2389:
2390: sub retrievestudentphoto {
2391: my ($udom,$unam,$ext,$type) = @_;
2392: my $home=&Apache::lonnet::homeserver($unam,$udom);
2393: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2394: if ($ret eq 'ok') {
2395: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2396: if ($type eq 'thumbnail') {
2397: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2398: }
2399: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2400: return $tokenurl;
2401: } else {
2402: if ($type eq 'thumbnail') {
2403: return '/adm/lonKaputt/genericstudent_tn.gif';
2404: } else {
2405: return '/adm/lonKaputt/lonlogo_broken.gif';
2406: }
2407: }
2408: }
2409:
2410: # -------------------------------------------------------------------- New chat
2411:
2412: sub chatsend {
2413: my ($newentry,$anon,$group)=@_;
2414: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2415: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2416: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2417: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2418: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2419: &escape($newentry)).':'.$group,$chome);
2420: }
2421:
2422: # ------------------------------------------ Find current version of a resource
2423:
2424: sub getversion {
2425: my $fname=&clutter(shift);
2426: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2427: return ¤tversion(&filelocation('',$fname));
2428: }
2429:
2430: sub currentversion {
2431: my $fname=shift;
2432: my $author=$fname;
2433: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2434: my ($udom,$uname)=split(/\//,$author);
2435: my $home=&homeserver($uname,$udom);
2436: if ($home eq 'no_host') {
2437: return -1;
2438: }
2439: my $answer=&reply("currentversion:$fname",$home);
2440: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2441: return -1;
2442: }
2443: return $answer;
2444: }
2445:
2446: #
2447: # Return special version number of resource if set by override, empty otherwise
2448: #
2449: sub usedversion {
2450: my $fname=shift;
2451: unless ($fname) { $fname=$env{'request.uri'}; }
2452: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2453: if ($urlversion) { return $urlversion; }
2454: return '';
2455: }
2456:
2457: # ----------------------------- Subscribe to a resource, return URL if possible
2458:
2459: sub subscribe {
2460: my $fname=shift;
2461: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2462: $fname=~s/[\n\r]//g;
2463: my $author=$fname;
2464: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2465: my ($udom,$uname)=split(/\//,$author);
2466: my $home=homeserver($uname,$udom);
2467: if ($home eq 'no_host') {
2468: return 'not_found';
2469: }
2470: my $answer=reply("sub:$fname",$home);
2471: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2472: $answer.=' by '.$home;
2473: }
2474: return $answer;
2475: }
2476:
2477: # -------------------------------------------------------------- Replicate file
2478:
2479: sub repcopy {
2480: my $filename=shift;
2481: $filename=~s/\/+/\//g;
2482: my $londocroot = $perlvar{'lonDocRoot'};
2483: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2484: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2485: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2486: $filename=~m{^/*(uploaded|editupload)/}) {
2487: return &repcopy_userfile($filename);
2488: }
2489: $filename=~s/[\n\r]//g;
2490: my $transname="$filename.in.transfer";
2491: # FIXME: this should flock
2492: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2493: my $remoteurl=subscribe($filename);
2494: if ($remoteurl =~ /^con_lost by/) {
2495: &logthis("Subscribe returned $remoteurl: $filename");
2496: return 'unavailable';
2497: } elsif ($remoteurl eq 'not_found') {
2498: #&logthis("Subscribe returned not_found: $filename");
2499: return 'not_found';
2500: } elsif ($remoteurl =~ /^rejected by/) {
2501: &logthis("Subscribe returned $remoteurl: $filename");
2502: return 'forbidden';
2503: } elsif ($remoteurl eq 'directory') {
2504: return 'ok';
2505: } else {
2506: my $author=$filename;
2507: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2508: my ($udom,$uname)=split(/\//,$author);
2509: my $home=homeserver($uname,$udom);
2510: unless ($home eq $perlvar{'lonHostID'}) {
2511: my @parts=split(/\//,$filename);
2512: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2513: if ($path ne "$londocroot/res") {
2514: &logthis("Malconfiguration for replication: $filename");
2515: return 'bad_request';
2516: }
2517: my $count;
2518: for ($count=5;$count<$#parts;$count++) {
2519: $path.="/$parts[$count]";
2520: if ((-e $path)!=1) {
2521: mkdir($path,0777);
2522: }
2523: }
2524: my $ua=new LWP::UserAgent;
2525: my $request=new HTTP::Request('GET',"$remoteurl");
2526: my $response=$ua->request($request,$transname);
2527: if ($response->is_error()) {
2528: unlink($transname);
2529: my $message=$response->status_line;
2530: &logthis("<font color=\"blue\">WARNING:"
2531: ." LWP get: $message: $filename</font>");
2532: return 'unavailable';
2533: } else {
2534: if ($remoteurl!~/\.meta$/) {
2535: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2536: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2537: if ($mresponse->is_error()) {
2538: unlink($filename.'.meta');
2539: &logthis(
2540: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2541: }
2542: }
2543: rename($transname,$filename);
2544: return 'ok';
2545: }
2546: }
2547: }
2548: }
2549:
2550: # ------------------------------------------------ Get server side include body
2551: sub ssi_body {
2552: my ($filelink,%form)=@_;
2553: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2554: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2555: }
2556: my $output='';
2557: my $response;
2558: if ($filelink=~/^https?\:/) {
2559: ($output,$response)=&externalssi($filelink);
2560: } else {
2561: $filelink .= $filelink=~/\?/ ? '&' : '?';
2562: $filelink .= 'inhibitmenu=yes';
2563: ($output,$response)=&ssi($filelink,%form);
2564: }
2565: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2566: $output=~s/^.*?\<body[^\>]*\>//si;
2567: $output=~s/\<\/body\s*\>.*?$//si;
2568: if (wantarray) {
2569: return ($output, $response);
2570: } else {
2571: return $output;
2572: }
2573: }
2574:
2575: # --------------------------------------------------------- Server Side Include
2576:
2577: sub absolute_url {
2578: my ($host_name) = @_;
2579: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2580: if ($host_name eq '') {
2581: $host_name = $ENV{'SERVER_NAME'};
2582: }
2583: return $protocol.$host_name;
2584: }
2585:
2586: #
2587: # Server side include.
2588: # Parameters:
2589: # fn Possibly encrypted resource name/id.
2590: # form Hash that describes how the rendering should be done
2591: # and other things.
2592: # Returns:
2593: # Scalar context: The content of the response.
2594: # Array context: 2 element list of the content and the full response object.
2595: #
2596: sub ssi {
2597:
2598: my ($fn,%form)=@_;
2599: my $ua=new LWP::UserAgent;
2600: my $request;
2601:
2602: $form{'no_update_last_known'}=1;
2603: &Apache::lonenc::check_encrypt(\$fn);
2604: if (%form) {
2605: $request=new HTTP::Request('POST',&absolute_url().$fn);
2606: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2607: } else {
2608: $request=new HTTP::Request('GET',&absolute_url().$fn);
2609: }
2610:
2611: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2612: my $response= $ua->request($request);
2613: my $content = $response->content;
2614:
2615:
2616: if (wantarray) {
2617: return ($content, $response);
2618: } else {
2619: return $content;
2620: }
2621: }
2622:
2623: sub externalssi {
2624: my ($url)=@_;
2625: my $ua=new LWP::UserAgent;
2626: my $request=new HTTP::Request('GET',$url);
2627: my $response=$ua->request($request);
2628: if (wantarray) {
2629: return ($response->content, $response);
2630: } else {
2631: return $response->content;
2632: }
2633: }
2634:
2635: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2636:
2637: sub allowuploaded {
2638: my ($srcurl,$url)=@_;
2639: $url=&clutter(&declutter($url));
2640: my $dir=$url;
2641: $dir=~s/\/[^\/]+$//;
2642: my %httpref=();
2643: my $httpurl=&hreflocation('',$url);
2644: $httpref{'httpref.'.$httpurl}=$srcurl;
2645: &Apache::lonnet::appenv(\%httpref);
2646: }
2647:
2648: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2649: # input: action, courseID, current domain, intended
2650: # path to file, source of file, instruction to parse file for objects,
2651: # ref to hash for embedded objects,
2652: # ref to hash for codebase of java objects.
2653: # reference to scalar to accommodate mime type determined
2654: # from File::MMagic if $parser = parse.
2655: #
2656: # output: url to file (if action was uploaddoc),
2657: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2658: #
2659: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2660: # course.
2661: #
2662: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2663: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2664: # course's home server.
2665: #
2666: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2667: # be copied from $source (current location) to
2668: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2669: # and will then be copied to
2670: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2671: # course's home server.
2672: #
2673: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2674: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2675: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2676: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2677: # in course's home server.
2678: #
2679:
2680: sub process_coursefile {
2681: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2682: $mimetype)=@_;
2683: my $fetchresult;
2684: my $home=&homeserver($docuname,$docudom);
2685: if ($action eq 'propagate') {
2686: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2687: $home);
2688: } else {
2689: my $fpath = '';
2690: my $fname = $file;
2691: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2692: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2693: my $filepath = &build_filepath($fpath);
2694: if ($action eq 'copy') {
2695: if ($source eq '') {
2696: $fetchresult = 'no source file';
2697: return $fetchresult;
2698: } else {
2699: my $destination = $filepath.'/'.$fname;
2700: rename($source,$destination);
2701: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2702: $home);
2703: }
2704: } elsif ($action eq 'uploaddoc') {
2705: open(my $fh,'>'.$filepath.'/'.$fname);
2706: print $fh $env{'form.'.$source};
2707: close($fh);
2708: if ($parser eq 'parse') {
2709: my $mm = new File::MMagic;
2710: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2711: if ($type eq 'text/html') {
2712: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2713: unless ($parse_result eq 'ok') {
2714: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2715: }
2716: }
2717: if (ref($mimetype)) {
2718: $$mimetype = $type;
2719: }
2720: }
2721: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2722: $home);
2723: if ($fetchresult eq 'ok') {
2724: return '/uploaded/'.$fpath.'/'.$fname;
2725: } else {
2726: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2727: ' to host '.$home.': '.$fetchresult);
2728: return '/adm/notfound.html';
2729: }
2730: }
2731: }
2732: unless ( $fetchresult eq 'ok') {
2733: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2734: ' to host '.$home.': '.$fetchresult);
2735: }
2736: return $fetchresult;
2737: }
2738:
2739: sub build_filepath {
2740: my ($fpath) = @_;
2741: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2742: unless ($fpath eq '') {
2743: my @parts=split('/',$fpath);
2744: foreach my $part (@parts) {
2745: $filepath.= '/'.$part;
2746: if ((-e $filepath)!=1) {
2747: mkdir($filepath,0777);
2748: }
2749: }
2750: }
2751: return $filepath;
2752: }
2753:
2754: sub store_edited_file {
2755: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2756: my $file = $primary_url;
2757: $file =~ s#^/uploaded/$docudom/$docuname/##;
2758: my $fpath = '';
2759: my $fname = $file;
2760: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2761: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2762: my $filepath = &build_filepath($fpath);
2763: open(my $fh,'>'.$filepath.'/'.$fname);
2764: print $fh $content;
2765: close($fh);
2766: my $home=&homeserver($docuname,$docudom);
2767: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2768: $home);
2769: if ($$fetchresult eq 'ok') {
2770: return '/uploaded/'.$fpath.'/'.$fname;
2771: } else {
2772: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2773: ' to host '.$home.': '.$$fetchresult);
2774: return '/adm/notfound.html';
2775: }
2776: }
2777:
2778: sub clean_filename {
2779: my ($fname,$args)=@_;
2780: # Replace Windows backslashes by forward slashes
2781: $fname=~s/\\/\//g;
2782: if (!$args->{'keep_path'}) {
2783: # Get rid of everything but the actual filename
2784: $fname=~s/^.*\/([^\/]+)$/$1/;
2785: }
2786: # Replace spaces by underscores
2787: $fname=~s/\s+/\_/g;
2788: # Replace all other weird characters by nothing
2789: $fname=~s{[^/\w\.\-]}{}g;
2790: # Replace all .\d. sequences with _\d. so they no longer look like version
2791: # numbers
2792: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2793: return $fname;
2794: }
2795: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2796: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2797: # image with the same aspect ratio as the original, but with dimensions which do
2798: # not exceed $resizewidth and $resizeheight.
2799:
2800: sub resizeImage {
2801: my ($img_path,$resizewidth,$resizeheight) = @_;
2802: my $ima = Image::Magick->new;
2803: my $resized;
2804: if (-e $img_path) {
2805: $ima->Read($img_path);
2806: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2807: my $width = $ima->Get('width');
2808: my $height = $ima->Get('height');
2809: if ($width > $resizewidth) {
2810: my $factor = $width/$resizewidth;
2811: my $newheight = $height/$factor;
2812: $ima->Scale(width=>$resizewidth,height=>$newheight);
2813: $resized = 1;
2814: }
2815: }
2816: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2817: my $width = $ima->Get('width');
2818: my $height = $ima->Get('height');
2819: if ($height > $resizeheight) {
2820: my $factor = $height/$resizeheight;
2821: my $newwidth = $width/$factor;
2822: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2823: $resized = 1;
2824: }
2825: }
2826: if ($resized) {
2827: $ima->Write($img_path);
2828: }
2829: }
2830: return;
2831: }
2832:
2833: # --------------- Take an uploaded file and put it into the userfiles directory
2834: # input: $formname - the contents of the file are in $env{"form.$formname"}
2835: # the desired filename is in $env{"form.$formname.filename"}
2836: # $context - possible values: coursedoc, existingfile, overwrite,
2837: # canceloverwrite, or ''.
2838: # if 'coursedoc': upload to the current course
2839: # if 'existingfile': write file to tmp/overwrites directory
2840: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2841: # $context is passed as argument to &finishuserfileupload
2842: # $subdir - directory in userfile to store the file into
2843: # $parser - instruction to parse file for objects ($parser = parse)
2844: # $allfiles - reference to hash for embedded objects
2845: # $codebase - reference to hash for codebase of java objects
2846: # $desuname - username for permanent storage of uploaded file
2847: # $dsetudom - domain for permanaent storage of uploaded file
2848: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2849: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2850: # $resizewidth - width (pixels) to which to resize uploaded image
2851: # $resizeheight - height (pixels) to which to resize uploaded image
2852: # $mimetype - reference to scalar to accommodate mime type determined
2853: # from File::MMagic.
2854: #
2855: # output: url of file in userspace, or error: <message>
2856: # or /adm/notfound.html if failure to upload occurse
2857:
2858: sub userfileupload {
2859: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2860: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2861: if (!defined($subdir)) { $subdir='unknown'; }
2862: my $fname=$env{'form.'.$formname.'.filename'};
2863: $fname=&clean_filename($fname);
2864: # See if there is anything left
2865: unless ($fname) { return 'error: no uploaded file'; }
2866: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2867: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2868: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2869: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2870: my $now = time;
2871: my $filepath;
2872: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2873: $filepath = 'tmp/helprequests/'.$now;
2874: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2875: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2876: '_'.$env{'user.domain'}.'/pending';
2877: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2878: my ($docuname,$docudom);
2879: if ($destudom) {
2880: $docudom = $destudom;
2881: } else {
2882: $docudom = $env{'user.domain'};
2883: }
2884: if ($destuname) {
2885: $docuname = $destuname;
2886: } else {
2887: $docuname = $env{'user.name'};
2888: }
2889: if (exists($env{'form.group'})) {
2890: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2891: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2892: }
2893: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2894: if ($context eq 'canceloverwrite') {
2895: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2896: if (-e $tempfile) {
2897: my @info = stat($tempfile);
2898: if ($info[9] eq $env{'form.timestamp'}) {
2899: unlink($tempfile);
2900: }
2901: }
2902: return;
2903: }
2904: }
2905: # Create the directory if not present
2906: my @parts=split(/\//,$filepath);
2907: my $fullpath = $perlvar{'lonDaemons'};
2908: for (my $i=0;$i<@parts;$i++) {
2909: $fullpath .= '/'.$parts[$i];
2910: if ((-e $fullpath)!=1) {
2911: mkdir($fullpath,0777);
2912: }
2913: }
2914: open(my $fh,'>'.$fullpath.'/'.$fname);
2915: print $fh $env{'form.'.$formname};
2916: close($fh);
2917: if ($context eq 'existingfile') {
2918: my @info = stat($fullpath.'/'.$fname);
2919: return ($fullpath.'/'.$fname,$info[9]);
2920: } else {
2921: return $fullpath.'/'.$fname;
2922: }
2923: }
2924: if ($subdir eq 'scantron') {
2925: $fname = 'scantron_orig_'.$fname;
2926: } else {
2927: $fname="$subdir/$fname";
2928: }
2929: if ($context eq 'coursedoc') {
2930: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2931: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2932: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2933: return &finishuserfileupload($docuname,$docudom,
2934: $formname,$fname,$parser,$allfiles,
2935: $codebase,$thumbwidth,$thumbheight,
2936: $resizewidth,$resizeheight,$context,$mimetype);
2937: } else {
2938: $fname=$env{'form.folder'}.'/'.$fname;
2939: return &process_coursefile('uploaddoc',$docuname,$docudom,
2940: $fname,$formname,$parser,
2941: $allfiles,$codebase,$mimetype);
2942: }
2943: } elsif (defined($destuname)) {
2944: my $docuname=$destuname;
2945: my $docudom=$destudom;
2946: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2947: $parser,$allfiles,$codebase,
2948: $thumbwidth,$thumbheight,
2949: $resizewidth,$resizeheight,$context,$mimetype);
2950: } else {
2951: my $docuname=$env{'user.name'};
2952: my $docudom=$env{'user.domain'};
2953: if (exists($env{'form.group'})) {
2954: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2955: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2956: }
2957: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2958: $parser,$allfiles,$codebase,
2959: $thumbwidth,$thumbheight,
2960: $resizewidth,$resizeheight,$context,$mimetype);
2961: }
2962: }
2963:
2964: sub finishuserfileupload {
2965: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2966: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2967: my $path=$docudom.'/'.$docuname.'/';
2968: my $filepath=$perlvar{'lonDocRoot'};
2969:
2970: my ($fnamepath,$file,$fetchthumb);
2971: $file=$fname;
2972: if ($fname=~m|/|) {
2973: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2974: $path.=$fnamepath.'/';
2975: }
2976: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2977: my $count;
2978: for ($count=4;$count<=$#parts;$count++) {
2979: $filepath.="/$parts[$count]";
2980: if ((-e $filepath)!=1) {
2981: mkdir($filepath,0777);
2982: }
2983: }
2984:
2985: # Save the file
2986: {
2987: if (!open(FH,'>'.$filepath.'/'.$file)) {
2988: &logthis('Failed to create '.$filepath.'/'.$file);
2989: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2990: return '/adm/notfound.html';
2991: }
2992: if ($context eq 'overwrite') {
2993: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2994: my $target = $filepath.'/'.$file;
2995: if (-e $source) {
2996: my @info = stat($source);
2997: if ($info[9] eq $env{'form.timestamp'}) {
2998: unless (&File::Copy::move($source,$target)) {
2999: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3000: return "Moving from $source failed";
3001: }
3002: } else {
3003: return "Temporary file: $source had unexpected date/time for last modification";
3004: }
3005: } else {
3006: return "Temporary file: $source missing";
3007: }
3008: } elsif (!print FH ($env{'form.'.$formname})) {
3009: &logthis('Failed to write to '.$filepath.'/'.$file);
3010: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3011: return '/adm/notfound.html';
3012: }
3013: close(FH);
3014: if ($resizewidth && $resizeheight) {
3015: my $mm = new File::MMagic;
3016: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3017: if ($mime_type =~ m{^image/}) {
3018: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3019: }
3020: }
3021: }
3022: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3023: if (ref($mimetype)) {
3024: if ($$mimetype eq '') {
3025: my $mm = new File::MMagic;
3026: my $type = $mm->checktype_filename($filepath.'/'.$file);
3027: $$mimetype = $type;
3028: }
3029: }
3030: }
3031: if ($parser eq 'parse') {
3032: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3033: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3034: $allfiles,$codebase);
3035: unless ($parse_result eq 'ok') {
3036: &logthis('Failed to parse '.$filepath.$file.
3037: ' for embedded media: '.$parse_result);
3038: }
3039: }
3040: }
3041: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3042: my $input = $filepath.'/'.$file;
3043: my $output = $filepath.'/'.'tn-'.$file;
3044: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3045: system("convert -sample $thumbsize $input $output");
3046: if (-e $filepath.'/'.'tn-'.$file) {
3047: $fetchthumb = 1;
3048: }
3049: }
3050:
3051: # Notify homeserver to grep it
3052: #
3053: my $docuhome=&homeserver($docuname,$docudom);
3054: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3055: if ($fetchresult eq 'ok') {
3056: if ($fetchthumb) {
3057: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3058: if ($thumbresult ne 'ok') {
3059: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3060: $docuhome.': '.$thumbresult);
3061: }
3062: }
3063: #
3064: # Return the URL to it
3065: return '/uploaded/'.$path.$file;
3066: } else {
3067: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3068: ': '.$fetchresult);
3069: return '/adm/notfound.html';
3070: }
3071: }
3072:
3073: sub extract_embedded_items {
3074: my ($fullpath,$allfiles,$codebase,$content) = @_;
3075: my @state = ();
3076: my (%lastids,%related,%shockwave,%flashvars);
3077: my %javafiles = (
3078: codebase => '',
3079: code => '',
3080: archive => ''
3081: );
3082: my %mediafiles = (
3083: src => '',
3084: movie => '',
3085: );
3086: my $p;
3087: if ($content) {
3088: $p = HTML::LCParser->new($content);
3089: } else {
3090: $p = HTML::LCParser->new($fullpath);
3091: }
3092: while (my $t=$p->get_token()) {
3093: if ($t->[0] eq 'S') {
3094: my ($tagname, $attr) = ($t->[1],$t->[2]);
3095: push(@state, $tagname);
3096: if (lc($tagname) eq 'allow') {
3097: &add_filetype($allfiles,$attr->{'src'},'src');
3098: }
3099: if (lc($tagname) eq 'img') {
3100: &add_filetype($allfiles,$attr->{'src'},'src');
3101: }
3102: if (lc($tagname) eq 'a') {
3103: &add_filetype($allfiles,$attr->{'href'},'href');
3104: }
3105: if (lc($tagname) eq 'script') {
3106: my $src;
3107: if ($attr->{'archive'} =~ /\.jar$/i) {
3108: &add_filetype($allfiles,$attr->{'archive'},'archive');
3109: } else {
3110: if ($attr->{'src'} ne '') {
3111: $src = $attr->{'src'};
3112: &add_filetype($allfiles,$src,'src');
3113: }
3114: }
3115: my $text = $p->get_trimmed_text();
3116: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3117: my @swfargs = split(/,/,$1);
3118: foreach my $item (@swfargs) {
3119: $item =~ s/["']//g;
3120: $item =~ s/^\s+//;
3121: $item =~ s/\s+$//;
3122: }
3123: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3124: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3125: push(@{$related{$swfargs[0]}},$swfargs[2]);
3126: } else {
3127: $related{$swfargs[0]} = [$swfargs[2]];
3128: }
3129: }
3130: }
3131: }
3132: if (lc($tagname) eq 'link') {
3133: if (lc($attr->{'rel'}) eq 'stylesheet') {
3134: &add_filetype($allfiles,$attr->{'href'},'href');
3135: }
3136: }
3137: if (lc($tagname) eq 'object' ||
3138: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3139: foreach my $item (keys(%javafiles)) {
3140: $javafiles{$item} = '';
3141: }
3142: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3143: $lastids{lc($tagname)} = $attr->{'id'};
3144: }
3145: }
3146: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3147: my $name = lc($attr->{'name'});
3148: foreach my $item (keys(%javafiles)) {
3149: if ($name eq $item) {
3150: $javafiles{$item} = $attr->{'value'};
3151: last;
3152: }
3153: }
3154: my $pathfrom;
3155: foreach my $item (keys(%mediafiles)) {
3156: if ($name eq $item) {
3157: $pathfrom = $attr->{'value'};
3158: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3159: &add_filetype($allfiles,$pathfrom,$name);
3160: last;
3161: }
3162: }
3163: if ($name eq 'flashvars') {
3164: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3165: }
3166: if ($pathfrom ne '') {
3167: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3168: $pathfrom);
3169: }
3170: }
3171: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3172: foreach my $item (keys(%javafiles)) {
3173: if ($attr->{$item}) {
3174: $javafiles{$item} = $attr->{$item};
3175: last;
3176: }
3177: }
3178: foreach my $item (keys(%mediafiles)) {
3179: if ($attr->{$item}) {
3180: &add_filetype($allfiles,$attr->{$item},$item);
3181: last;
3182: }
3183: }
3184: if (lc($tagname) eq 'embed') {
3185: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3186: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3187: $attr->{'src'});
3188: }
3189: }
3190: }
3191: if ($t->[4] =~ m{/>$}) {
3192: pop(@state);
3193: }
3194: } elsif ($t->[0] eq 'E') {
3195: my ($tagname) = ($t->[1]);
3196: if ($javafiles{'codebase'} ne '') {
3197: $javafiles{'codebase'} .= '/';
3198: }
3199: if (lc($tagname) eq 'applet' ||
3200: lc($tagname) eq 'object' ||
3201: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3202: ) {
3203: foreach my $item (keys(%javafiles)) {
3204: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3205: my $file=$javafiles{'codebase'}.$javafiles{$item};
3206: &add_filetype($allfiles,$file,$item);
3207: }
3208: }
3209: }
3210: pop @state;
3211: }
3212: }
3213: foreach my $id (sort(keys(%flashvars))) {
3214: if ($shockwave{$id} ne '') {
3215: my @pairs = split(/\&/,$flashvars{$id});
3216: foreach my $pair (@pairs) {
3217: my ($key,$value) = split(/\=/,$pair);
3218: if ($key eq 'thumb') {
3219: &add_filetype($allfiles,$value,$key);
3220: } elsif ($key eq 'content') {
3221: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3222: my ($ext) = ($value =~ /\.([^.]+)$/);
3223: if ($ext ne '') {
3224: &add_filetype($allfiles,$path.$value,$ext);
3225: }
3226: }
3227: }
3228: }
3229: }
3230: return 'ok';
3231: }
3232:
3233: sub add_filetype {
3234: my ($allfiles,$file,$type)=@_;
3235: if (exists($allfiles->{$file})) {
3236: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3237: push(@{$allfiles->{$file}}, &escape($type));
3238: }
3239: } else {
3240: @{$allfiles->{$file}} = (&escape($type));
3241: }
3242: }
3243:
3244: sub embedded_dependency {
3245: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3246: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3247: if (($identifier ne '') &&
3248: (ref($related->{$identifier}) eq 'ARRAY') &&
3249: ($pathfrom ne '')) {
3250: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3251: foreach my $dep (@{$related->{$identifier}}) {
3252: &add_filetype($allfiles,$path.$dep,'object');
3253: }
3254: }
3255: }
3256: return;
3257: }
3258:
3259: sub removeuploadedurl {
3260: my ($url)=@_;
3261: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3262: return &removeuserfile($uname,$udom,$fname);
3263: }
3264:
3265: sub removeuserfile {
3266: my ($docuname,$docudom,$fname)=@_;
3267: my $home=&homeserver($docuname,$docudom);
3268: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3269: if ($result eq 'ok') {
3270: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3271: my $metafile = $fname.'.meta';
3272: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3273: my $url = "/uploaded/$docudom/$docuname/$fname";
3274: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3275: my $sqlresult =
3276: &update_portfolio_table($docuname,$docudom,$file,
3277: 'portfolio_metadata',$group,
3278: 'delete');
3279: }
3280: }
3281: return $result;
3282: }
3283:
3284: sub mkdiruserfile {
3285: my ($docuname,$docudom,$dir)=@_;
3286: my $home=&homeserver($docuname,$docudom);
3287: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3288: }
3289:
3290: sub renameuserfile {
3291: my ($docuname,$docudom,$old,$new)=@_;
3292: my $home=&homeserver($docuname,$docudom);
3293: my $result = &reply("renameuserfile:$docudom:$docuname:".
3294: &escape("$old").':'.&escape("$new"),$home);
3295: if ($result eq 'ok') {
3296: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3297: my $oldmeta = $old.'.meta';
3298: my $newmeta = $new.'.meta';
3299: my $metaresult =
3300: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3301: my $url = "/uploaded/$docudom/$docuname/$old";
3302: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3303: my $sqlresult =
3304: &update_portfolio_table($docuname,$docudom,$file,
3305: 'portfolio_metadata',$group,
3306: 'delete');
3307: }
3308: }
3309: return $result;
3310: }
3311:
3312: # ------------------------------------------------------------------------- Log
3313:
3314: sub log {
3315: my ($dom,$nam,$hom,$what)=@_;
3316: return critical("log:$dom:$nam:$what",$hom);
3317: }
3318:
3319: # ------------------------------------------------------------------ Course Log
3320: #
3321: # This routine flushes several buffers of non-mission-critical nature
3322: #
3323:
3324: sub flushcourselogs {
3325: &logthis('Flushing log buffers');
3326: #
3327: # course logs
3328: # This is a log of all transactions in a course, which can be used
3329: # for data mining purposes
3330: #
3331: # It also collects the courseid database, which lists last transaction
3332: # times and course titles for all courseids
3333: #
3334: my %courseidbuffer=();
3335: foreach my $crsid (keys(%courselogs)) {
3336: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3337: &escape($courselogs{$crsid}),
3338: $coursehombuf{$crsid}) eq 'ok') {
3339: delete $courselogs{$crsid};
3340: } else {
3341: &logthis('Failed to flush log buffer for '.$crsid);
3342: if (length($courselogs{$crsid})>40000) {
3343: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3344: " exceeded maximum size, deleting.</font>");
3345: delete $courselogs{$crsid};
3346: }
3347: }
3348: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3349: 'description' => $coursedescrbuf{$crsid},
3350: 'inst_code' => $courseinstcodebuf{$crsid},
3351: 'type' => $coursetypebuf{$crsid},
3352: 'owner' => $courseownerbuf{$crsid},
3353: };
3354: }
3355: #
3356: # Write course id database (reverse lookup) to homeserver of courses
3357: # Is used in pickcourse
3358: #
3359: foreach my $crs_home (keys(%courseidbuffer)) {
3360: my $response = &courseidput(&host_domain($crs_home),
3361: $courseidbuffer{$crs_home},
3362: $crs_home,'timeonly');
3363: }
3364: #
3365: # File accesses
3366: # Writes to the dynamic metadata of resources to get hit counts, etc.
3367: #
3368: foreach my $entry (keys(%accesshash)) {
3369: if ($entry =~ /___count$/) {
3370: my ($dom,$name);
3371: ($dom,$name,undef)=
3372: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3373: if (! defined($dom) || $dom eq '' ||
3374: ! defined($name) || $name eq '') {
3375: my $cid = $env{'request.course.id'};
3376: $dom = $env{'request.'.$cid.'.domain'};
3377: $name = $env{'request.'.$cid.'.num'};
3378: }
3379: my $value = $accesshash{$entry};
3380: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3381: my %temphash=($url => $value);
3382: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3383: if ($result eq 'ok') {
3384: delete $accesshash{$entry};
3385: }
3386: } else {
3387: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3388: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3389: my %temphash=($entry => $accesshash{$entry});
3390: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3391: delete $accesshash{$entry};
3392: }
3393: }
3394: }
3395: #
3396: # Roles
3397: # Reverse lookup of user roles for course faculty/staff and co-authorship
3398: #
3399: foreach my $entry (keys(%userrolehash)) {
3400: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3401: split(/\:/,$entry);
3402: if (&Apache::lonnet::put('nohist_userroles',
3403: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3404: $rudom,$runame) eq 'ok') {
3405: delete $userrolehash{$entry};
3406: }
3407: }
3408: #
3409: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3410: #
3411: my %domrolebuffer = ();
3412: foreach my $entry (keys(%domainrolehash)) {
3413: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3414: if ($domrolebuffer{$rudom}) {
3415: $domrolebuffer{$rudom}.='&'.&escape($entry).
3416: '='.&escape($domainrolehash{$entry});
3417: } else {
3418: $domrolebuffer{$rudom}.=&escape($entry).
3419: '='.&escape($domainrolehash{$entry});
3420: }
3421: delete $domainrolehash{$entry};
3422: }
3423: foreach my $dom (keys(%domrolebuffer)) {
3424: my %servers = &get_servers($dom,'library');
3425: foreach my $tryserver (keys(%servers)) {
3426: unless (&reply('domroleput:'.$dom.':'.
3427: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3428: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3429: }
3430: }
3431: }
3432: $dumpcount++;
3433: }
3434:
3435: sub courselog {
3436: my $what=shift;
3437: $what=time.':'.$what;
3438: unless ($env{'request.course.id'}) { return ''; }
3439: $coursedombuf{$env{'request.course.id'}}=
3440: $env{'course.'.$env{'request.course.id'}.'.domain'};
3441: $coursenumbuf{$env{'request.course.id'}}=
3442: $env{'course.'.$env{'request.course.id'}.'.num'};
3443: $coursehombuf{$env{'request.course.id'}}=
3444: $env{'course.'.$env{'request.course.id'}.'.home'};
3445: $coursedescrbuf{$env{'request.course.id'}}=
3446: $env{'course.'.$env{'request.course.id'}.'.description'};
3447: $courseinstcodebuf{$env{'request.course.id'}}=
3448: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3449: $courseownerbuf{$env{'request.course.id'}}=
3450: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3451: $coursetypebuf{$env{'request.course.id'}}=
3452: $env{'course.'.$env{'request.course.id'}.'.type'};
3453: if (defined $courselogs{$env{'request.course.id'}}) {
3454: $courselogs{$env{'request.course.id'}}.='&'.$what;
3455: } else {
3456: $courselogs{$env{'request.course.id'}}.=$what;
3457: }
3458: if (length($courselogs{$env{'request.course.id'}})>4048) {
3459: &flushcourselogs();
3460: }
3461: }
3462:
3463: sub courseacclog {
3464: my $fnsymb=shift;
3465: unless ($env{'request.course.id'}) { return ''; }
3466: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3467: if ($fnsymb=~/$LONCAPA::assess_re/) {
3468: $what.=':POST';
3469: # FIXME: Probably ought to escape things....
3470: foreach my $key (keys(%env)) {
3471: if ($key=~/^form\.(.*)/) {
3472: my $formitem = $1;
3473: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3474: $what.=':'.$formitem.'='.$env{$key};
3475: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3476: $what.=':'.$formitem.'='.$env{$key};
3477: }
3478: }
3479: }
3480: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3481: # FIXME: We should not be depending on a form parameter that someone
3482: # editing lonsearchcat.pm might change in the future.
3483: if ($env{'form.phase'} eq 'course_search') {
3484: $what.= ':POST';
3485: # FIXME: Probably ought to escape things....
3486: foreach my $element ('courseexp','crsfulltext','crsrelated',
3487: 'crsdiscuss') {
3488: $what.=':'.$element.'='.$env{'form.'.$element};
3489: }
3490: }
3491: }
3492: &courselog($what);
3493: }
3494:
3495: sub countacc {
3496: my $url=&declutter(shift);
3497: return if (! defined($url) || $url eq '');
3498: unless ($env{'request.course.id'}) { return ''; }
3499: #
3500: # Mark that this url was used in this course
3501: #
3502: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3503: #
3504: # Increase the access count for this resource in this child process
3505: #
3506: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3507: $accesshash{$key}++;
3508: }
3509:
3510: sub linklog {
3511: my ($from,$to)=@_;
3512: $from=&declutter($from);
3513: $to=&declutter($to);
3514: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3515: $accesshash{$to.'___'.$from.'___goto'}=1;
3516: }
3517:
3518: sub statslog {
3519: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3520: if ($users<2) { return; }
3521: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3522: 'course' => $env{'request.course.id'},
3523: 'sections' => '"all"',
3524: 'num_students' => $users,
3525: 'part' => $part,
3526: 'symb' => $symb,
3527: 'mean_tries' => $av_attempts,
3528: 'deg_of_diff' => $degdiff});
3529: foreach my $key (keys(%dynstore)) {
3530: $accesshash{$key}=$dynstore{$key};
3531: }
3532: }
3533:
3534: sub userrolelog {
3535: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3536: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3537: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3538: $userrolehash
3539: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3540: =$tend.':'.$tstart;
3541: }
3542: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3543: $userrolehash
3544: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3545: =$tend.':'.$tstart;
3546: }
3547: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3548: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3549: $domainrolehash
3550: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3551: = $tend.':'.$tstart;
3552: }
3553: }
3554:
3555: sub courserolelog {
3556: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3557: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3558: my $cdom = $1;
3559: my $cnum = $2;
3560: my $sec = $3;
3561: my $namespace = 'rolelog';
3562: my %storehash = (
3563: role => $trole,
3564: start => $tstart,
3565: end => $tend,
3566: selfenroll => $selfenroll,
3567: context => $context,
3568: );
3569: if ($trole eq 'gr') {
3570: $namespace = 'groupslog';
3571: $storehash{'group'} = $sec;
3572: } else {
3573: $storehash{'section'} = $sec;
3574: }
3575: &write_log('course',$namespace,\%storehash,$delflag,$username,
3576: $domain,$cnum,$cdom);
3577: if (($trole ne 'st') || ($sec ne '')) {
3578: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3579: }
3580: }
3581: return;
3582: }
3583:
3584: sub domainrolelog {
3585: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3586: if ($area =~ m{^/($match_domain)/$}) {
3587: my $cdom = $1;
3588: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3589: my $namespace = 'rolelog';
3590: my %storehash = (
3591: role => $trole,
3592: start => $tstart,
3593: end => $tend,
3594: context => $context,
3595: );
3596: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3597: $domain,$domconfiguser,$cdom);
3598: }
3599: return;
3600:
3601: }
3602:
3603: sub coauthorrolelog {
3604: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3605: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3606: my $audom = $1;
3607: my $auname = $2;
3608: my $namespace = 'rolelog';
3609: my %storehash = (
3610: role => $trole,
3611: start => $tstart,
3612: end => $tend,
3613: context => $context,
3614: );
3615: &write_log('author',$namespace,\%storehash,$delflag,$username,
3616: $domain,$auname,$audom);
3617: }
3618: return;
3619: }
3620:
3621: sub get_course_adv_roles {
3622: my ($cid,$codes) = @_;
3623: $cid=$env{'request.course.id'} unless (defined($cid));
3624: my %coursehash=&coursedescription($cid);
3625: my $crstype = &Apache::loncommon::course_type($cid);
3626: my %nothide=();
3627: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3628: if ($user !~ /:/) {
3629: $nothide{join(':',split(/[\@]/,$user))}=1;
3630: } else {
3631: $nothide{$user}=1;
3632: }
3633: }
3634: my %returnhash=();
3635: my %dumphash=
3636: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3637: my $now=time;
3638: my %privileged;
3639: foreach my $entry (keys(%dumphash)) {
3640: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3641: if (($tstart) && ($tstart<0)) { next; }
3642: if (($tend) && ($tend<$now)) { next; }
3643: if (($tstart) && ($now<$tstart)) { next; }
3644: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3645: if ($username eq '' || $domain eq '') { next; }
3646: unless (ref($privileged{$domain}) eq 'HASH') {
3647: my %dompersonnel =
3648: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3649: $privileged{$domain} = {};
3650: foreach my $server (keys(%dompersonnel)) {
3651: if (ref($dompersonnel{$server}) eq 'HASH') {
3652: foreach my $user (keys(%{$dompersonnel{$server}})) {
3653: my ($trole,$uname,$udom) = split(/:/,$user);
3654: $privileged{$udom}{$uname} = 1;
3655: }
3656: }
3657: }
3658: }
3659: if ((exists($privileged{$domain}{$username})) &&
3660: (!$nothide{$username.':'.$domain})) { next; }
3661: if ($role eq 'cr') { next; }
3662: if ($codes) {
3663: if ($section) { $role .= ':'.$section; }
3664: if ($returnhash{$role}) {
3665: $returnhash{$role}.=','.$username.':'.$domain;
3666: } else {
3667: $returnhash{$role}=$username.':'.$domain;
3668: }
3669: } else {
3670: my $key=&plaintext($role,$crstype);
3671: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3672: if ($returnhash{$key}) {
3673: $returnhash{$key}.=','.$username.':'.$domain;
3674: } else {
3675: $returnhash{$key}=$username.':'.$domain;
3676: }
3677: }
3678: }
3679: return %returnhash;
3680: }
3681:
3682: sub get_my_roles {
3683: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3684: unless (defined($uname)) { $uname=$env{'user.name'}; }
3685: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3686: my (%dumphash,%nothide);
3687: if ($context eq 'userroles') {
3688: %dumphash = &dump('roles',$udom,$uname);
3689: } else {
3690: %dumphash=
3691: &dump('nohist_userroles',$udom,$uname);
3692: if ($hidepriv) {
3693: my %coursehash=&coursedescription($udom.'_'.$uname);
3694: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3695: if ($user !~ /:/) {
3696: $nothide{join(':',split(/[\@]/,$user))} = 1;
3697: } else {
3698: $nothide{$user} = 1;
3699: }
3700: }
3701: }
3702: }
3703: my %returnhash=();
3704: my $now=time;
3705: my %privileged;
3706: foreach my $entry (keys(%dumphash)) {
3707: my ($role,$tend,$tstart);
3708: if ($context eq 'userroles') {
3709: next if ($entry =~ /^rolesdef/);
3710: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3711: } else {
3712: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3713: }
3714: if (($tstart) && ($tstart<0)) { next; }
3715: my $status = 'active';
3716: if (($tend) && ($tend<=$now)) {
3717: $status = 'previous';
3718: }
3719: if (($tstart) && ($now<$tstart)) {
3720: $status = 'future';
3721: }
3722: if (ref($types) eq 'ARRAY') {
3723: if (!grep(/^\Q$status\E$/,@{$types})) {
3724: next;
3725: }
3726: } else {
3727: if ($status ne 'active') {
3728: next;
3729: }
3730: }
3731: my ($rolecode,$username,$domain,$section,$area);
3732: if ($context eq 'userroles') {
3733: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
3734: (undef,$domain,$username,$section) = split(/\//,$area);
3735: } else {
3736: ($role,$username,$domain,$section) = split(/\:/,$entry);
3737: }
3738: if (ref($roledoms) eq 'ARRAY') {
3739: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3740: next;
3741: }
3742: }
3743: if (ref($roles) eq 'ARRAY') {
3744: if (!grep(/^\Q$role\E$/,@{$roles})) {
3745: if ($role =~ /^cr\//) {
3746: if (!grep(/^cr$/,@{$roles})) {
3747: next;
3748: }
3749: } elsif ($role =~ /^gr\//) {
3750: if (!grep(/^gr$/,@{$roles})) {
3751: next;
3752: }
3753: } else {
3754: next;
3755: }
3756: }
3757: }
3758: if ($hidepriv) {
3759: if ($context eq 'userroles') {
3760: if ((&privileged($username,$domain)) &&
3761: (!$nothide{$username.':'.$domain})) {
3762: next;
3763: }
3764: } else {
3765: unless (ref($privileged{$domain}) eq 'HASH') {
3766: my %dompersonnel =
3767: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3768: $privileged{$domain} = {};
3769: if (keys(%dompersonnel)) {
3770: foreach my $server (keys(%dompersonnel)) {
3771: if (ref($dompersonnel{$server}) eq 'HASH') {
3772: foreach my $user (keys(%{$dompersonnel{$server}})) {
3773: my ($trole,$uname,$udom) = split(/:/,$user);
3774: $privileged{$udom}{$uname} = $trole;
3775: }
3776: }
3777: }
3778: }
3779: }
3780: if (exists($privileged{$domain}{$username})) {
3781: if (!$nothide{$username.':'.$domain}) {
3782: next;
3783: }
3784: }
3785: }
3786: }
3787: if ($withsec) {
3788: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3789: $tstart.':'.$tend;
3790: } else {
3791: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3792: }
3793: }
3794: return %returnhash;
3795: }
3796:
3797: # ----------------------------------------------------- Frontpage Announcements
3798: #
3799: #
3800:
3801: sub postannounce {
3802: my ($server,$text)=@_;
3803: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3804: unless ($text=~/\w/) { $text=''; }
3805: return &reply('setannounce:'.&escape($text),$server);
3806: }
3807:
3808: sub getannounce {
3809:
3810: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3811: my $announcement='';
3812: while (my $line = <$fh>) { $announcement .= $line; }
3813: close($fh);
3814: if ($announcement=~/\w/) {
3815: return
3816: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3817: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3818: } else {
3819: return '';
3820: }
3821: } else {
3822: return '';
3823: }
3824: }
3825:
3826: # ---------------------------------------------------------- Course ID routines
3827: # Deal with domain's nohist_courseid.db files
3828: #
3829:
3830: sub courseidput {
3831: my ($domain,$storehash,$coursehome,$caller) = @_;
3832: return unless (ref($storehash) eq 'HASH');
3833: my $outcome;
3834: if ($caller eq 'timeonly') {
3835: my $cids = '';
3836: foreach my $item (keys(%$storehash)) {
3837: $cids.=&escape($item).'&';
3838: }
3839: $cids=~s/\&$//;
3840: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3841: $coursehome);
3842: } else {
3843: my $items = '';
3844: foreach my $item (keys(%$storehash)) {
3845: $items.= &escape($item).'='.
3846: &freeze_escape($$storehash{$item}).'&';
3847: }
3848: $items=~s/\&$//;
3849: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3850: $coursehome);
3851: }
3852: if ($outcome eq 'unknown_cmd') {
3853: my $what;
3854: foreach my $cid (keys(%$storehash)) {
3855: $what .= &escape($cid).'=';
3856: foreach my $item ('description','inst_code','owner','type') {
3857: $what .= &escape($storehash->{$cid}{$item}).':';
3858: }
3859: $what =~ s/\:$/&/;
3860: }
3861: $what =~ s/\&$//;
3862: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3863: } else {
3864: return $outcome;
3865: }
3866: }
3867:
3868: sub courseiddump {
3869: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3870: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3871: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3872: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3873: my $as_hash = 1;
3874: my %returnhash;
3875: if (!$domfilter) { $domfilter=''; }
3876: my %libserv = &all_library();
3877: foreach my $tryserver (keys(%libserv)) {
3878: if ( ( $hostidflag == 1
3879: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3880: || (!defined($hostidflag)) ) {
3881:
3882: if (($domfilter eq '') ||
3883: (&host_domain($tryserver) eq $domfilter)) {
3884: my $rep;
3885: if (grep { $_ eq $tryserver } current_machine_ids()) {
3886: $rep = LONCAPA::Lond::dump_course_id_handler(
3887: join(":", (&host_domain($tryserver), $sincefilter,
3888: &escape($descfilter), &escape($instcodefilter),
3889: &escape($ownerfilter), &escape($coursefilter),
3890: &escape($typefilter), &escape($regexp_ok),
3891: $as_hash, &escape($selfenrollonly),
3892: &escape($catfilter), $showhidden, $caller,
3893: &escape($cloner), &escape($cc_clone), $cloneonly,
3894: &escape($createdbefore), &escape($createdafter),
3895: &escape($creationcontext), $domcloner)));
3896: } else {
3897: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
3898: $sincefilter.':'.&escape($descfilter).':'.
3899: &escape($instcodefilter).':'.&escape($ownerfilter).
3900: ':'.&escape($coursefilter).':'.&escape($typefilter).
3901: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3902: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3903: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3904: &escape($cc_clone).':'.$cloneonly.':'.
3905: &escape($createdbefore).':'.&escape($createdafter).':'.
3906: &escape($creationcontext).':'.$domcloner,
3907: $tryserver);
3908: }
3909:
3910: my @pairs=split(/\&/,$rep);
3911: foreach my $item (@pairs) {
3912: my ($key,$value)=split(/\=/,$item,2);
3913: $key = &unescape($key);
3914: next if ($key =~ /^error: 2 /);
3915: my $result = &thaw_unescape($value);
3916: if (ref($result) eq 'HASH') {
3917: $returnhash{$key}=$result;
3918: } else {
3919: my @responses = split(/:/,$value);
3920: my @items = ('description','inst_code','owner','type');
3921: for (my $i=0; $i<@responses; $i++) {
3922: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3923: }
3924: }
3925: }
3926: }
3927: }
3928: }
3929: return %returnhash;
3930: }
3931:
3932: sub courselastaccess {
3933: my ($cdom,$cnum,$hostidref) = @_;
3934: my %returnhash;
3935: if ($cdom && $cnum) {
3936: my $chome = &homeserver($cnum,$cdom);
3937: if ($chome ne 'no_host') {
3938: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3939: &extract_lastaccess(\%returnhash,$rep);
3940: }
3941: } else {
3942: if (!$cdom) { $cdom=''; }
3943: my %libserv = &all_library();
3944: foreach my $tryserver (keys(%libserv)) {
3945: if (ref($hostidref) eq 'ARRAY') {
3946: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3947: }
3948: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3949: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3950: &extract_lastaccess(\%returnhash,$rep);
3951: }
3952: }
3953: }
3954: return %returnhash;
3955: }
3956:
3957: sub extract_lastaccess {
3958: my ($returnhash,$rep) = @_;
3959: if (ref($returnhash) eq 'HASH') {
3960: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3961: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3962: $rep eq '') {
3963: my @pairs=split(/\&/,$rep);
3964: foreach my $item (@pairs) {
3965: my ($key,$value)=split(/\=/,$item,2);
3966: $key = &unescape($key);
3967: next if ($key =~ /^error: 2 /);
3968: $returnhash->{$key} = &thaw_unescape($value);
3969: }
3970: }
3971: }
3972: return;
3973: }
3974:
3975: # ---------------------------------------------------------- DC e-mail
3976:
3977: sub dcmailput {
3978: my ($domain,$msgid,$message,$server)=@_;
3979: my $status = &Apache::lonnet::critical(
3980: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3981: &escape($message),$server);
3982: return $status;
3983: }
3984:
3985: sub dcmaildump {
3986: my ($dom,$startdate,$enddate,$senders) = @_;
3987: my %returnhash=();
3988:
3989: if (defined(&domain($dom,'primary'))) {
3990: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3991: &escape($enddate).':';
3992: my @esc_senders=map { &escape($_)} @$senders;
3993: $cmd.=&escape(join('&',@esc_senders));
3994: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3995: my ($key,$value) = split(/\=/,$line,2);
3996: if (($key) && ($value)) {
3997: $returnhash{&unescape($key)} = &unescape($value);
3998: }
3999: }
4000: }
4001: return %returnhash;
4002: }
4003: # ---------------------------------------------------------- Domain roles
4004:
4005: sub get_domain_roles {
4006: my ($dom,$roles,$startdate,$enddate)=@_;
4007: if ((!defined($startdate)) || ($startdate eq '')) {
4008: $startdate = '.';
4009: }
4010: if ((!defined($enddate)) || ($enddate eq '')) {
4011: $enddate = '.';
4012: }
4013: my $rolelist;
4014: if (ref($roles) eq 'ARRAY') {
4015: $rolelist = join(':',@{$roles});
4016: }
4017: my %personnel = ();
4018:
4019: my %servers = &get_servers($dom,'library');
4020: foreach my $tryserver (keys(%servers)) {
4021: %{$personnel{$tryserver}}=();
4022: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4023: &escape($startdate).':'.
4024: &escape($enddate).':'.
4025: &escape($rolelist), $tryserver))) {
4026: my ($key,$value) = split(/\=/,$line,2);
4027: if (($key) && ($value)) {
4028: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4029: }
4030: }
4031: }
4032: return %personnel;
4033: }
4034:
4035: # ----------------------------------------------------------- Interval timing
4036:
4037: {
4038: # Caches needed for speedup of navmaps
4039: # We don't want to cache this for very long at all (5 seconds at most)
4040: #
4041: # The user for whom we cache
4042: my $cachedkey='';
4043: # The cached times for this user
4044: my %cachedtimes=();
4045: # When this was last done
4046: my $cachedtime=();
4047:
4048: sub load_all_first_access {
4049: my ($uname,$udom)=@_;
4050: if (($cachedkey eq $uname.':'.$udom) &&
4051: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4052: return;
4053: }
4054: $cachedtime=time;
4055: $cachedkey=$uname.':'.$udom;
4056: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4057: }
4058:
4059: sub get_first_access {
4060: my ($type,$argsymb,$argmap)=@_;
4061: my ($symb,$courseid,$udom,$uname)=&whichuser();
4062: if ($argsymb) { $symb=$argsymb; }
4063: my ($map,$id,$res)=&decode_symb($symb);
4064: if ($argmap) { $map = $argmap; }
4065: if ($type eq 'course') {
4066: $res='course';
4067: } elsif ($type eq 'map') {
4068: $res=&symbread($map);
4069: } else {
4070: $res=$symb;
4071: }
4072: &load_all_first_access($uname,$udom);
4073: return $cachedtimes{"$courseid\0$res"};
4074: }
4075:
4076: sub set_first_access {
4077: my ($type,$interval)=@_;
4078: my ($symb,$courseid,$udom,$uname)=&whichuser();
4079: my ($map,$id,$res)=&decode_symb($symb);
4080: if ($type eq 'course') {
4081: $res='course';
4082: } elsif ($type eq 'map') {
4083: $res=&symbread($map);
4084: } else {
4085: $res=$symb;
4086: }
4087: $cachedkey='';
4088: my $firstaccess=&get_first_access($type,$symb,$map);
4089: if (!$firstaccess) {
4090: my $start = time;
4091: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4092: $udom,$uname);
4093: if ($putres eq 'ok') {
4094: &put('timerinterval',{"$courseid\0$res"=>$interval},
4095: $udom,$uname);
4096: &appenv(
4097: {
4098: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4099: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4100: }
4101: );
4102: }
4103: return $putres;
4104: }
4105: return 'already_set';
4106: }
4107: }
4108: # --------------------------------------------- Set Expire Date for Spreadsheet
4109:
4110: sub expirespread {
4111: my ($uname,$udom,$stype,$usymb)=@_;
4112: my $cid=$env{'request.course.id'};
4113: if ($cid) {
4114: my $now=time;
4115: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4116: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4117: $env{'course.'.$cid.'.num'}.
4118: ':nohist_expirationdates:'.
4119: &escape($key).'='.$now,
4120: $env{'course.'.$cid.'.home'})
4121: }
4122: return 'ok';
4123: }
4124:
4125: # ----------------------------------------------------- Devalidate Spreadsheets
4126:
4127: sub devalidate {
4128: my ($symb,$uname,$udom)=@_;
4129: my $cid=$env{'request.course.id'};
4130: if ($cid) {
4131: # delete the stored spreadsheets for
4132: # - the student level sheet of this user in course's homespace
4133: # - the assessment level sheet for this resource
4134: # for this user in user's homespace
4135: # - current conditional state info
4136: my $key=$uname.':'.$udom.':';
4137: my $status=
4138: &del('nohist_calculatedsheets',
4139: [$key.'studentcalc:'],
4140: $env{'course.'.$cid.'.domain'},
4141: $env{'course.'.$cid.'.num'})
4142: .' '.
4143: &del('nohist_calculatedsheets_'.$cid,
4144: [$key.'assesscalc:'.$symb],$udom,$uname);
4145: unless ($status eq 'ok ok') {
4146: &logthis('Could not devalidate spreadsheet '.
4147: $uname.' at '.$udom.' for '.
4148: $symb.': '.$status);
4149: }
4150: &delenv('user.state.'.$cid);
4151: }
4152: }
4153:
4154: sub get_scalar {
4155: my ($string,$end) = @_;
4156: my $value;
4157: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4158: $value = $1;
4159: } elsif ($$string =~ s/^([^&]*?)&//) {
4160: $value = $1;
4161: }
4162: return &unescape($value);
4163: }
4164:
4165: sub array2str {
4166: my (@array) = @_;
4167: my $result=&arrayref2str(\@array);
4168: $result=~s/^__ARRAY_REF__//;
4169: $result=~s/__END_ARRAY_REF__$//;
4170: return $result;
4171: }
4172:
4173: sub arrayref2str {
4174: my ($arrayref) = @_;
4175: my $result='__ARRAY_REF__';
4176: foreach my $elem (@$arrayref) {
4177: if(ref($elem) eq 'ARRAY') {
4178: $result.=&arrayref2str($elem).'&';
4179: } elsif(ref($elem) eq 'HASH') {
4180: $result.=&hashref2str($elem).'&';
4181: } elsif(ref($elem)) {
4182: #print("Got a ref of ".(ref($elem))." skipping.");
4183: } else {
4184: $result.=&escape($elem).'&';
4185: }
4186: }
4187: $result=~s/\&$//;
4188: $result .= '__END_ARRAY_REF__';
4189: return $result;
4190: }
4191:
4192: sub hash2str {
4193: my (%hash) = @_;
4194: my $result=&hashref2str(\%hash);
4195: $result=~s/^__HASH_REF__//;
4196: $result=~s/__END_HASH_REF__$//;
4197: return $result;
4198: }
4199:
4200: sub hashref2str {
4201: my ($hashref)=@_;
4202: my $result='__HASH_REF__';
4203: foreach my $key (sort(keys(%$hashref))) {
4204: if (ref($key) eq 'ARRAY') {
4205: $result.=&arrayref2str($key).'=';
4206: } elsif (ref($key) eq 'HASH') {
4207: $result.=&hashref2str($key).'=';
4208: } elsif (ref($key)) {
4209: $result.='=';
4210: #print("Got a ref of ".(ref($key))." skipping.");
4211: } else {
4212: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4213: }
4214:
4215: if(ref($hashref->{$key}) eq 'ARRAY') {
4216: $result.=&arrayref2str($hashref->{$key}).'&';
4217: } elsif(ref($hashref->{$key}) eq 'HASH') {
4218: $result.=&hashref2str($hashref->{$key}).'&';
4219: } elsif(ref($hashref->{$key})) {
4220: $result.='&';
4221: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4222: } else {
4223: $result.=&escape($hashref->{$key}).'&';
4224: }
4225: }
4226: $result=~s/\&$//;
4227: $result .= '__END_HASH_REF__';
4228: return $result;
4229: }
4230:
4231: sub str2hash {
4232: my ($string)=@_;
4233: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4234: return %$hash;
4235: }
4236:
4237: sub str2hashref {
4238: my ($string) = @_;
4239:
4240: my %hash;
4241:
4242: if($string !~ /^__HASH_REF__/) {
4243: if (! ($string eq '' || !defined($string))) {
4244: $hash{'error'}='Not hash reference';
4245: }
4246: return (\%hash, $string);
4247: }
4248:
4249: $string =~ s/^__HASH_REF__//;
4250:
4251: while($string !~ /^__END_HASH_REF__/) {
4252: #key
4253: my $key='';
4254: if($string =~ /^__HASH_REF__/) {
4255: ($key, $string)=&str2hashref($string);
4256: if(defined($key->{'error'})) {
4257: $hash{'error'}='Bad data';
4258: return (\%hash, $string);
4259: }
4260: } elsif($string =~ /^__ARRAY_REF__/) {
4261: ($key, $string)=&str2arrayref($string);
4262: if($key->[0] eq 'Array reference error') {
4263: $hash{'error'}='Bad data';
4264: return (\%hash, $string);
4265: }
4266: } else {
4267: $string =~ s/^(.*?)=//;
4268: $key=&unescape($1);
4269: }
4270: $string =~ s/^=//;
4271:
4272: #value
4273: my $value='';
4274: if($string =~ /^__HASH_REF__/) {
4275: ($value, $string)=&str2hashref($string);
4276: if(defined($value->{'error'})) {
4277: $hash{'error'}='Bad data';
4278: return (\%hash, $string);
4279: }
4280: } elsif($string =~ /^__ARRAY_REF__/) {
4281: ($value, $string)=&str2arrayref($string);
4282: if($value->[0] eq 'Array reference error') {
4283: $hash{'error'}='Bad data';
4284: return (\%hash, $string);
4285: }
4286: } else {
4287: $value=&get_scalar(\$string,'__END_HASH_REF__');
4288: }
4289: $string =~ s/^&//;
4290:
4291: $hash{$key}=$value;
4292: }
4293:
4294: $string =~ s/^__END_HASH_REF__//;
4295:
4296: return (\%hash, $string);
4297: }
4298:
4299: sub str2array {
4300: my ($string)=@_;
4301: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4302: return @$array;
4303: }
4304:
4305: sub str2arrayref {
4306: my ($string) = @_;
4307: my @array;
4308:
4309: if($string !~ /^__ARRAY_REF__/) {
4310: if (! ($string eq '' || !defined($string))) {
4311: $array[0]='Array reference error';
4312: }
4313: return (\@array, $string);
4314: }
4315:
4316: $string =~ s/^__ARRAY_REF__//;
4317:
4318: while($string !~ /^__END_ARRAY_REF__/) {
4319: my $value='';
4320: if($string =~ /^__HASH_REF__/) {
4321: ($value, $string)=&str2hashref($string);
4322: if(defined($value->{'error'})) {
4323: $array[0] ='Array reference error';
4324: return (\@array, $string);
4325: }
4326: } elsif($string =~ /^__ARRAY_REF__/) {
4327: ($value, $string)=&str2arrayref($string);
4328: if($value->[0] eq 'Array reference error') {
4329: $array[0] ='Array reference error';
4330: return (\@array, $string);
4331: }
4332: } else {
4333: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4334: }
4335: $string =~ s/^&//;
4336:
4337: push(@array, $value);
4338: }
4339:
4340: $string =~ s/^__END_ARRAY_REF__//;
4341:
4342: return (\@array, $string);
4343: }
4344:
4345: # -------------------------------------------------------------------Temp Store
4346:
4347: sub tmpreset {
4348: my ($symb,$namespace,$domain,$stuname) = @_;
4349: if (!$symb) {
4350: $symb=&symbread();
4351: if (!$symb) { $symb= $env{'request.url'}; }
4352: }
4353: $symb=escape($symb);
4354:
4355: if (!$namespace) { $namespace=$env{'request.state'}; }
4356: $namespace=~s/\//\_/g;
4357: $namespace=~s/\W//g;
4358:
4359: if (!$domain) { $domain=$env{'user.domain'}; }
4360: if (!$stuname) { $stuname=$env{'user.name'}; }
4361: if ($domain eq 'public' && $stuname eq 'public') {
4362: $stuname=$ENV{'REMOTE_ADDR'};
4363: }
4364: my $path=LONCAPA::tempdir();
4365: my %hash;
4366: if (tie(%hash,'GDBM_File',
4367: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4368: &GDBM_WRCREAT(),0640)) {
4369: foreach my $key (keys(%hash)) {
4370: if ($key=~ /:$symb/) {
4371: delete($hash{$key});
4372: }
4373: }
4374: }
4375: }
4376:
4377: sub tmpstore {
4378: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4379:
4380: if (!$symb) {
4381: $symb=&symbread();
4382: if (!$symb) { $symb= $env{'request.url'}; }
4383: }
4384: $symb=escape($symb);
4385:
4386: if (!$namespace) {
4387: # I don't think we would ever want to store this for a course.
4388: # it seems this will only be used if we don't have a course.
4389: #$namespace=$env{'request.course.id'};
4390: #if (!$namespace) {
4391: $namespace=$env{'request.state'};
4392: #}
4393: }
4394: $namespace=~s/\//\_/g;
4395: $namespace=~s/\W//g;
4396: if (!$domain) { $domain=$env{'user.domain'}; }
4397: if (!$stuname) { $stuname=$env{'user.name'}; }
4398: if ($domain eq 'public' && $stuname eq 'public') {
4399: $stuname=$ENV{'REMOTE_ADDR'};
4400: }
4401: my $now=time;
4402: my %hash;
4403: my $path=LONCAPA::tempdir();
4404: if (tie(%hash,'GDBM_File',
4405: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4406: &GDBM_WRCREAT(),0640)) {
4407: $hash{"version:$symb"}++;
4408: my $version=$hash{"version:$symb"};
4409: my $allkeys='';
4410: foreach my $key (keys(%$storehash)) {
4411: $allkeys.=$key.':';
4412: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4413: }
4414: $hash{"$version:$symb:timestamp"}=$now;
4415: $allkeys.='timestamp';
4416: $hash{"$version:keys:$symb"}=$allkeys;
4417: if (untie(%hash)) {
4418: return 'ok';
4419: } else {
4420: return "error:$!";
4421: }
4422: } else {
4423: return "error:$!";
4424: }
4425: }
4426:
4427: # -----------------------------------------------------------------Temp Restore
4428:
4429: sub tmprestore {
4430: my ($symb,$namespace,$domain,$stuname) = @_;
4431:
4432: if (!$symb) {
4433: $symb=&symbread();
4434: if (!$symb) { $symb= $env{'request.url'}; }
4435: }
4436: $symb=escape($symb);
4437:
4438: if (!$namespace) { $namespace=$env{'request.state'}; }
4439:
4440: if (!$domain) { $domain=$env{'user.domain'}; }
4441: if (!$stuname) { $stuname=$env{'user.name'}; }
4442: if ($domain eq 'public' && $stuname eq 'public') {
4443: $stuname=$ENV{'REMOTE_ADDR'};
4444: }
4445: my %returnhash;
4446: $namespace=~s/\//\_/g;
4447: $namespace=~s/\W//g;
4448: my %hash;
4449: my $path=LONCAPA::tempdir();
4450: if (tie(%hash,'GDBM_File',
4451: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4452: &GDBM_READER(),0640)) {
4453: my $version=$hash{"version:$symb"};
4454: $returnhash{'version'}=$version;
4455: my $scope;
4456: for ($scope=1;$scope<=$version;$scope++) {
4457: my $vkeys=$hash{"$scope:keys:$symb"};
4458: my @keys=split(/:/,$vkeys);
4459: my $key;
4460: $returnhash{"$scope:keys"}=$vkeys;
4461: foreach $key (@keys) {
4462: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4463: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4464: }
4465: }
4466: if (!(untie(%hash))) {
4467: return "error:$!";
4468: }
4469: } else {
4470: return "error:$!";
4471: }
4472: return %returnhash;
4473: }
4474:
4475: # ----------------------------------------------------------------------- Store
4476:
4477: sub store {
4478: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4479: my $home='';
4480:
4481: if ($stuname) { $home=&homeserver($stuname,$domain); }
4482:
4483: $symb=&symbclean($symb);
4484: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4485:
4486: if (!$domain) { $domain=$env{'user.domain'}; }
4487: if (!$stuname) { $stuname=$env{'user.name'}; }
4488:
4489: &devalidate($symb,$stuname,$domain);
4490:
4491: $symb=escape($symb);
4492: if (!$namespace) {
4493: unless ($namespace=$env{'request.course.id'}) {
4494: return '';
4495: }
4496: }
4497: if (!$home) { $home=$env{'user.home'}; }
4498:
4499: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4500: $$storehash{'host'}=$perlvar{'lonHostID'};
4501:
4502: my $namevalue='';
4503: foreach my $key (keys(%$storehash)) {
4504: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4505: }
4506: $namevalue=~s/\&$//;
4507: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4508: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4509: }
4510:
4511: # -------------------------------------------------------------- Critical Store
4512:
4513: sub cstore {
4514: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4515: my $home='';
4516:
4517: if ($stuname) { $home=&homeserver($stuname,$domain); }
4518:
4519: $symb=&symbclean($symb);
4520: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4521:
4522: if (!$domain) { $domain=$env{'user.domain'}; }
4523: if (!$stuname) { $stuname=$env{'user.name'}; }
4524:
4525: &devalidate($symb,$stuname,$domain);
4526:
4527: $symb=escape($symb);
4528: if (!$namespace) {
4529: unless ($namespace=$env{'request.course.id'}) {
4530: return '';
4531: }
4532: }
4533: if (!$home) { $home=$env{'user.home'}; }
4534:
4535: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4536: $$storehash{'host'}=$perlvar{'lonHostID'};
4537:
4538: my $namevalue='';
4539: foreach my $key (keys(%$storehash)) {
4540: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4541: }
4542: $namevalue=~s/\&$//;
4543: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4544: return critical
4545: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4546: }
4547:
4548: # --------------------------------------------------------------------- Restore
4549:
4550: sub restore {
4551: my ($symb,$namespace,$domain,$stuname) = @_;
4552: my $home='';
4553:
4554: if ($stuname) { $home=&homeserver($stuname,$domain); }
4555:
4556: if (!$symb) {
4557: unless ($symb=escape(&symbread())) { return ''; }
4558: } else {
4559: $symb=&escape(&symbclean($symb));
4560: }
4561: if (!$namespace) {
4562: unless ($namespace=$env{'request.course.id'}) {
4563: return '';
4564: }
4565: }
4566: if (!$domain) { $domain=$env{'user.domain'}; }
4567: if (!$stuname) { $stuname=$env{'user.name'}; }
4568: if (!$home) { $home=$env{'user.home'}; }
4569: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4570:
4571: my %returnhash=();
4572: foreach my $line (split(/\&/,$answer)) {
4573: my ($name,$value)=split(/\=/,$line);
4574: $returnhash{&unescape($name)}=&thaw_unescape($value);
4575: }
4576: my $version;
4577: for ($version=1;$version<=$returnhash{'version'};$version++) {
4578: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4579: $returnhash{$item}=$returnhash{$version.':'.$item};
4580: }
4581: }
4582: return %returnhash;
4583: }
4584:
4585: # ---------------------------------------------------------- Course Description
4586: #
4587: #
4588:
4589: sub coursedescription {
4590: my ($courseid,$args)=@_;
4591: $courseid=~s/^\///;
4592: $courseid=~s/\_/\//g;
4593: my ($cdomain,$cnum)=split(/\//,$courseid);
4594: my $chome=&homeserver($cnum,$cdomain);
4595: my $normalid=$cdomain.'_'.$cnum;
4596: # need to always cache even if we get errors otherwise we keep
4597: # trying and trying and trying to get the course description.
4598: my %envhash=();
4599: my %returnhash=();
4600:
4601: my $expiretime=600;
4602: if ($env{'request.course.id'} eq $normalid) {
4603: $expiretime=120;
4604: }
4605:
4606: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4607: if (!$args->{'freshen_cache'}
4608: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4609: foreach my $key (keys(%env)) {
4610: next if ($key !~ /^\Q$prefix\E(.*)/);
4611: my ($setting) = $1;
4612: $returnhash{$setting} = $env{$key};
4613: }
4614: return %returnhash;
4615: }
4616:
4617: # get the data again
4618:
4619: if (!$args->{'one_time'}) {
4620: $envhash{'course.'.$normalid.'.last_cache'}=time;
4621: }
4622:
4623: if ($chome ne 'no_host') {
4624: %returnhash=&dump('environment',$cdomain,$cnum);
4625: if (!exists($returnhash{'con_lost'})) {
4626: my $username = $env{'user.name'}; # Defult username
4627: if(defined $args->{'user'}) {
4628: $username = $args->{'user'};
4629: }
4630: $returnhash{'home'}= $chome;
4631: $returnhash{'domain'} = $cdomain;
4632: $returnhash{'num'} = $cnum;
4633: if (!defined($returnhash{'type'})) {
4634: $returnhash{'type'} = 'Course';
4635: }
4636: while (my ($name,$value) = each %returnhash) {
4637: $envhash{'course.'.$normalid.'.'.$name}=$value;
4638: }
4639: $returnhash{'url'}=&clutter($returnhash{'url'});
4640: $returnhash{'fn'}=LONCAPA::tempdir() .
4641: $username.'_'.$cdomain.'_'.$cnum;
4642: $envhash{'course.'.$normalid.'.home'}=$chome;
4643: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4644: $envhash{'course.'.$normalid.'.num'}=$cnum;
4645: }
4646: }
4647: if (!$args->{'one_time'}) {
4648: &appenv(\%envhash);
4649: }
4650: return %returnhash;
4651: }
4652:
4653: sub update_released_required {
4654: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4655: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4656: $cid = $env{'request.course.id'};
4657: $cdom = $env{'course.'.$cid.'.domain'};
4658: $cnum = $env{'course.'.$cid.'.num'};
4659: $chome = $env{'course.'.$cid.'.home'};
4660: }
4661: if ($needsrelease) {
4662: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4663: my $needsupdate;
4664: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4665: $needsupdate = 1;
4666: } else {
4667: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4668: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4669: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4670: $needsupdate = 1;
4671: }
4672: }
4673: if ($needsupdate) {
4674: my %needshash = (
4675: 'internal.releaserequired' => $needsrelease,
4676: );
4677: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4678: if ($putresult eq 'ok') {
4679: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4680: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4681: if (ref($crsinfo{$cid}) eq 'HASH') {
4682: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4683: &courseidput($cdom,\%crsinfo,$chome,'notime');
4684: }
4685: }
4686: }
4687: }
4688: return;
4689: }
4690:
4691: # -------------------------------------------------See if a user is privileged
4692:
4693: sub privileged {
4694: my ($username,$domain)=@_;
4695:
4696: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4697: my $now = time;
4698:
4699: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4700: my ($trole, $tend, $tstart) = split(/_/, $role);
4701: if (($trole eq 'dc') || ($trole eq 'su')) {
4702: return 1 unless ($tend && $tend < $now)
4703: or ($tstart && $tstart > $now);
4704: }
4705: }
4706:
4707: return 0;
4708: }
4709:
4710: # -------------------------------------------------------- Get user privileges
4711:
4712: sub rolesinit {
4713: my ($domain, $username) = @_;
4714: my %userroles = ('user.login.time' => time);
4715: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4716:
4717: # firstaccess and timerinterval are related to timed maps/resources.
4718: # also, blocking can be triggered by an activating timer
4719: # it's saved in the user's %env.
4720: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4721: my %timerinterval = &dump('timerinterval', $domain, $username);
4722: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4723: %timerintchk, %timerintenv);
4724:
4725: foreach my $key (keys(%firstaccess)) {
4726: my ($cid, $rest) = split(/\0/, $key);
4727: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4728: }
4729:
4730: foreach my $key (keys(%timerinterval)) {
4731: my ($cid,$rest) = split(/\0/,$key);
4732: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4733: }
4734:
4735: my %allroles=();
4736: my %allgroups=();
4737:
4738: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4739: my $role = $rolesdump{$area};
4740: $area =~ s/\_\w\w$//;
4741:
4742: my ($trole, $tend, $tstart, $group_privs);
4743:
4744: if ($role =~ /^cr/) {
4745: # Custom role, defined by a user
4746: # e.g., user.role.cr/msu/smith/mynewrole
4747: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4748: $trole = $1;
4749: ($tend, $tstart) = split('_', $2);
4750: } else {
4751: $trole = $role;
4752: }
4753: } elsif ($role =~ m|^gr/|) {
4754: # Role of member in a group, defined within a course/community
4755: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
4756: ($trole, $tend, $tstart) = split(/_/, $role);
4757: next if $tstart eq '-1';
4758: ($trole, $group_privs) = split(/\//, $trole);
4759: $group_privs = &unescape($group_privs);
4760: } else {
4761: # Just a normal role, defined in roles.tab
4762: ($trole, $tend, $tstart) = split(/_/,$role);
4763: }
4764:
4765: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4766: $username);
4767: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4768:
4769: # role expired or not available yet?
4770: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
4771: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
4772:
4773: next if $area eq '' or $trole eq '';
4774:
4775: my $spec = "$trole.$area";
4776: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
4777:
4778: if ($trole =~ /^cr\//) {
4779: # Custom role, defined by a user
4780: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4781: } elsif ($trole eq 'gr') {
4782: # Role of a member in a group, defined within a course/community
4783: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4784: next;
4785: } else {
4786: # Normal role, defined in roles.tab
4787: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4788: }
4789:
4790: my $cid = $tdomain.'_'.$trest;
4791: unless ($firstaccchk{$cid}) {
4792: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4793: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4794: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4795: $coursetimerstarts{$cid}{$item};
4796: }
4797: }
4798: $firstaccchk{$cid} = 1;
4799: }
4800: unless ($timerintchk{$cid}) {
4801: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
4802: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
4803: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
4804: $coursetimerintervals{$cid}{$item};
4805: }
4806: }
4807: $timerintchk{$cid} = 1;
4808: }
4809: }
4810:
4811: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
4812: \%allroles, \%allgroups);
4813: $env{'user.adv'} = $userroles{'user.adv'};
4814:
4815: return (\%userroles,\%firstaccenv,\%timerintenv);
4816: }
4817:
4818: sub set_arearole {
4819: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4820: # log the associated role with the area
4821: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4822: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4823: }
4824:
4825: sub custom_roleprivs {
4826: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4827: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4828: my $homsvr=homeserver($rauthor,$rdomain);
4829: if (&hostname($homsvr) ne '') {
4830: my ($rdummy,$roledef)=
4831: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4832: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4833: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4834: if (defined($syspriv)) {
4835: if ($trest =~ /^$match_community$/) {
4836: $syspriv =~ s/bre\&S//;
4837: }
4838: $$allroles{'cm./'}.=':'.$syspriv;
4839: $$allroles{$spec.'./'}.=':'.$syspriv;
4840: }
4841: if ($tdomain ne '') {
4842: if (defined($dompriv)) {
4843: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4844: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4845: }
4846: if (($trest ne '') && (defined($coursepriv))) {
4847: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4848: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4849: }
4850: }
4851: }
4852: }
4853: }
4854:
4855: sub group_roleprivs {
4856: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4857: my $access = 1;
4858: my $now = time;
4859: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4860: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4861: if ($access) {
4862: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4863: $$allgroups{$course}{$group} .=':'.$group_privs;
4864: }
4865: }
4866:
4867: sub standard_roleprivs {
4868: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4869: if (defined($pr{$trole.':s'})) {
4870: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4871: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4872: }
4873: if ($tdomain ne '') {
4874: if (defined($pr{$trole.':d'})) {
4875: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4876: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4877: }
4878: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4879: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4880: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4881: }
4882: }
4883: }
4884:
4885: sub set_userprivs {
4886: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4887: my $author=0;
4888: my $adv=0;
4889: my %grouproles = ();
4890: if (keys(%{$allgroups}) > 0) {
4891: my @groupkeys;
4892: foreach my $role (keys(%{$allroles})) {
4893: push(@groupkeys,$role);
4894: }
4895: if (ref($groups_roles) eq 'HASH') {
4896: foreach my $key (keys(%{$groups_roles})) {
4897: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4898: push(@groupkeys,$key);
4899: }
4900: }
4901: }
4902: if (@groupkeys > 0) {
4903: foreach my $role (@groupkeys) {
4904: my ($trole,$area,$sec,$extendedarea);
4905: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4906: $trole = $1;
4907: $area = $2;
4908: $sec = $3;
4909: $extendedarea = $area.$sec;
4910: if (exists($$allgroups{$area})) {
4911: foreach my $group (keys(%{$$allgroups{$area}})) {
4912: my $spec = $trole.'.'.$extendedarea;
4913: $grouproles{$spec.'.'.$area.'/'.$group} =
4914: $$allgroups{$area}{$group};
4915: }
4916: }
4917: }
4918: }
4919: }
4920: }
4921: foreach my $group (keys(%grouproles)) {
4922: $$allroles{$group} = $grouproles{$group};
4923: }
4924: foreach my $role (keys(%{$allroles})) {
4925: my %thesepriv;
4926: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4927: foreach my $item (split(/:/,$$allroles{$role})) {
4928: if ($item ne '') {
4929: my ($privilege,$restrictions)=split(/&/,$item);
4930: if ($restrictions eq '') {
4931: $thesepriv{$privilege}='F';
4932: } elsif ($thesepriv{$privilege} ne 'F') {
4933: $thesepriv{$privilege}.=$restrictions;
4934: }
4935: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4936: }
4937: }
4938: my $thesestr='';
4939: foreach my $priv (sort(keys(%thesepriv))) {
4940: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4941: }
4942: $userroles->{'user.priv.'.$role} = $thesestr;
4943: }
4944: return ($author,$adv);
4945: }
4946:
4947: sub role_status {
4948: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4949: my @pwhere = ();
4950: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4951: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4952: unless (!defined($$role) || $$role eq '') {
4953: $$where=join('.',@pwhere);
4954: $$trolecode=$$role.'.'.$$where;
4955: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4956: $$tstatus='is';
4957: if ($$tstart && $$tstart>$update) {
4958: $$tstatus='future';
4959: if ($$tstart<$now) {
4960: if ($$tstart && $$tstart>$refresh) {
4961: if (($$where ne '') && ($$role ne '')) {
4962: my (%allroles,%allgroups,$group_privs,
4963: %groups_roles,@rolecodes);
4964: my %userroles = (
4965: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4966: );
4967: @rolecodes = ('cm');
4968: my $spec=$$role.'.'.$$where;
4969: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4970: if ($$role =~ /^cr\//) {
4971: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4972: push(@rolecodes,'cr');
4973: } elsif ($$role eq 'gr') {
4974: push(@rolecodes,$$role);
4975: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4976: $env{'user.name'});
4977: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4978: (undef,my $group_privs) = split(/\//,$trole);
4979: $group_privs = &unescape($group_privs);
4980: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4981: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4982: &get_groups_roles($tdomain,$trest,
4983: \%course_roles,\@rolecodes,
4984: \%groups_roles);
4985: } else {
4986: push(@rolecodes,$$role);
4987: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4988: }
4989: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4990: &appenv(\%userroles,\@rolecodes);
4991: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4992: }
4993: }
4994: $$tstatus = 'is';
4995: }
4996: }
4997: if ($$tend) {
4998: if ($$tend<$update) {
4999: $$tstatus='expired';
5000: } elsif ($$tend<$now) {
5001: $$tstatus='will_not';
5002: }
5003: }
5004: }
5005: }
5006: }
5007:
5008: sub get_groups_roles {
5009: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5010: return unless((ref($cdom_courseroles) eq 'HASH') &&
5011: (ref($rolecodes) eq 'ARRAY') &&
5012: (ref($groups_roles) eq 'HASH'));
5013: if (keys(%{$cdom_courseroles}) > 0) {
5014: my ($cnum) = ($rest =~ /^($match_courseid)/);
5015: if ($cdom ne '' && $cnum ne '') {
5016: foreach my $key (keys(%{$cdom_courseroles})) {
5017: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5018: my $crsrole = $1;
5019: my $crssec = $2;
5020: if ($crsrole =~ /^cr/) {
5021: unless (grep(/^cr$/,@{$rolecodes})) {
5022: push(@{$rolecodes},'cr');
5023: }
5024: } else {
5025: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5026: push(@{$rolecodes},$crsrole);
5027: }
5028: }
5029: my $rolekey = "$crsrole./$cdom/$cnum";
5030: if ($crssec ne '') {
5031: $rolekey .= "/$crssec";
5032: }
5033: $rolekey .= './';
5034: $groups_roles->{$rolekey} = $rolecodes;
5035: }
5036: }
5037: }
5038: }
5039: return;
5040: }
5041:
5042: sub delete_env_groupprivs {
5043: my ($where,$courseroles,$possroles) = @_;
5044: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5045: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5046: unless (ref($courseroles->{$udom}) eq 'HASH') {
5047: %{$courseroles->{$udom}} =
5048: &get_my_roles('','','userroles',['active'],
5049: $possroles,[$udom],1);
5050: }
5051: if (ref($courseroles->{$udom}) eq 'HASH') {
5052: foreach my $item (keys(%{$courseroles->{$udom}})) {
5053: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5054: my $area = '/'.$cdom.'/'.$cnum;
5055: my $privkey = "user.priv.$crsrole.$area";
5056: if ($crssec ne '') {
5057: $privkey .= '/'.$crssec;
5058: }
5059: $privkey .= ".$area/$group";
5060: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5061: }
5062: }
5063: return;
5064: }
5065:
5066: sub check_adhoc_privs {
5067: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5068: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5069: my $setprivs;
5070: if ($env{$cckey}) {
5071: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5072: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5073: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5074: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5075: $setprivs = 1;
5076: }
5077: } else {
5078: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5079: $setprivs = 1;
5080: }
5081: return $setprivs;
5082: }
5083:
5084: sub set_adhoc_privileges {
5085: # role can be cc or ca
5086: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5087: my $area = '/'.$dcdom.'/'.$pickedcourse;
5088: my $spec = $role.'.'.$area;
5089: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5090: $env{'user.name'});
5091: my %ccrole = ();
5092: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5093: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5094: &appenv(\%userroles,[$role,'cm']);
5095: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5096: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5097: &appenv( {'request.role' => $spec,
5098: 'request.role.domain' => $dcdom,
5099: 'request.course.sec' => ''
5100: }
5101: );
5102: my $tadv=0;
5103: if (&allowed('adv') eq 'F') { $tadv=1; }
5104: &appenv({'request.role.adv' => $tadv});
5105: }
5106: }
5107:
5108: # --------------------------------------------------------------- get interface
5109:
5110: sub get {
5111: my ($namespace,$storearr,$udomain,$uname)=@_;
5112: my $items='';
5113: foreach my $item (@$storearr) {
5114: $items.=&escape($item).'&';
5115: }
5116: $items=~s/\&$//;
5117: if (!$udomain) { $udomain=$env{'user.domain'}; }
5118: if (!$uname) { $uname=$env{'user.name'}; }
5119: my $uhome=&homeserver($uname,$udomain);
5120:
5121: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5122: my @pairs=split(/\&/,$rep);
5123: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5124: return @pairs;
5125: }
5126: my %returnhash=();
5127: my $i=0;
5128: foreach my $item (@$storearr) {
5129: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5130: $i++;
5131: }
5132: return %returnhash;
5133: }
5134:
5135: # --------------------------------------------------------------- del interface
5136:
5137: sub del {
5138: my ($namespace,$storearr,$udomain,$uname)=@_;
5139: my $items='';
5140: foreach my $item (@$storearr) {
5141: $items.=&escape($item).'&';
5142: }
5143:
5144: $items=~s/\&$//;
5145: if (!$udomain) { $udomain=$env{'user.domain'}; }
5146: if (!$uname) { $uname=$env{'user.name'}; }
5147: my $uhome=&homeserver($uname,$udomain);
5148: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5149: }
5150:
5151: # -------------------------------------------------------------- dump interface
5152:
5153: sub unserialize {
5154: my ($rep, $escapedkeys) = @_;
5155:
5156: return {} if $rep =~ /^error/;
5157:
5158: my %returnhash=();
5159: foreach my $item (split /\&/, $rep) {
5160: my ($key, $value) = split(/=/, $item, 2);
5161: $key = unescape($key) unless $escapedkeys;
5162: next if $key =~ /^error: 2 /;
5163: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5164: }
5165: #return %returnhash;
5166: return \%returnhash;
5167: }
5168:
5169: # see Lond::dump_with_regexp
5170: # if $escapedkeys hash keys won't get unescaped.
5171: sub dump {
5172: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5173: if (!$udomain) { $udomain=$env{'user.domain'}; }
5174: if (!$uname) { $uname=$env{'user.name'}; }
5175: my $uhome=&homeserver($uname,$udomain);
5176:
5177: my $reply;
5178: if (grep { $_ eq $uhome } current_machine_ids()) {
5179: # user is hosted on this machine
5180: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5181: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5182: return %{unserialize($reply, $escapedkeys)};
5183: }
5184: if ($regexp) {
5185: $regexp=&escape($regexp);
5186: } else {
5187: $regexp='.';
5188: }
5189: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5190: my @pairs=split(/\&/,$rep);
5191: my %returnhash=();
5192: if (!($rep =~ /^error/ )) {
5193: foreach my $item (@pairs) {
5194: my ($key,$value)=split(/=/,$item,2);
5195: $key = unescape($key) unless $escapedkeys;
5196: #$key = &unescape($key);
5197: next if ($key =~ /^error: 2 /);
5198: $returnhash{$key}=&thaw_unescape($value);
5199: }
5200: }
5201: return %returnhash;
5202: }
5203:
5204:
5205: # --------------------------------------------------------- dumpstore interface
5206:
5207: sub dumpstore {
5208: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5209: # same as dump but keys must be escaped. They may contain colon separated
5210: # lists of values that may themself contain colons (e.g. symbs).
5211: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5212: }
5213:
5214: # -------------------------------------------------------------- keys interface
5215:
5216: sub getkeys {
5217: my ($namespace,$udomain,$uname)=@_;
5218: if (!$udomain) { $udomain=$env{'user.domain'}; }
5219: if (!$uname) { $uname=$env{'user.name'}; }
5220: my $uhome=&homeserver($uname,$udomain);
5221: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5222: my @keyarray=();
5223: foreach my $key (split(/\&/,$rep)) {
5224: next if ($key =~ /^error: 2 /);
5225: push(@keyarray,&unescape($key));
5226: }
5227: return @keyarray;
5228: }
5229:
5230: # --------------------------------------------------------------- currentdump
5231: sub currentdump {
5232: my ($courseid,$sdom,$sname)=@_;
5233: $courseid = $env{'request.course.id'} if (! defined($courseid));
5234: $sdom = $env{'user.domain'} if (! defined($sdom));
5235: $sname = $env{'user.name'} if (! defined($sname));
5236: my $uhome = &homeserver($sname,$sdom);
5237: my $rep;
5238:
5239: if (grep { $_ eq $uhome } current_machine_ids()) {
5240: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5241: $courseid)));
5242: } else {
5243: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5244: }
5245:
5246: return if ($rep =~ /^(error:|no_such_host)/);
5247: #
5248: my %returnhash=();
5249: #
5250: if ($rep eq "unknown_cmd") {
5251: # an old lond will not know currentdump
5252: # Do a dump and make it look like a currentdump
5253: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5254: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5255: my %hash = @tmp;
5256: @tmp=();
5257: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5258: } else {
5259: my @pairs=split(/\&/,$rep);
5260: foreach my $pair (@pairs) {
5261: my ($key,$value)=split(/=/,$pair,2);
5262: my ($symb,$param) = split(/:/,$key);
5263: $returnhash{&unescape($symb)}->{&unescape($param)} =
5264: &thaw_unescape($value);
5265: }
5266: }
5267: return %returnhash;
5268: }
5269:
5270: sub convert_dump_to_currentdump{
5271: my %hash = %{shift()};
5272: my %returnhash;
5273: # Code ripped from lond, essentially. The only difference
5274: # here is the unescaping done by lonnet::dump(). Conceivably
5275: # we might run in to problems with parameter names =~ /^v\./
5276: while (my ($key,$value) = each(%hash)) {
5277: my ($v,$symb,$param) = split(/:/,$key);
5278: $symb = &unescape($symb);
5279: $param = &unescape($param);
5280: next if ($v eq 'version' || $symb eq 'keys');
5281: next if (exists($returnhash{$symb}) &&
5282: exists($returnhash{$symb}->{$param}) &&
5283: $returnhash{$symb}->{'v.'.$param} > $v);
5284: $returnhash{$symb}->{$param}=$value;
5285: $returnhash{$symb}->{'v.'.$param}=$v;
5286: }
5287: #
5288: # Remove all of the keys in the hashes which keep track of
5289: # the version of the parameter.
5290: while (my ($symb,$param_hash) = each(%returnhash)) {
5291: # use a foreach because we are going to delete from the hash.
5292: foreach my $key (keys(%$param_hash)) {
5293: delete($param_hash->{$key}) if ($key =~ /^v\./);
5294: }
5295: }
5296: return \%returnhash;
5297: }
5298:
5299: # ------------------------------------------------------ critical inc interface
5300:
5301: sub cinc {
5302: return &inc(@_,'critical');
5303: }
5304:
5305: # --------------------------------------------------------------- inc interface
5306:
5307: sub inc {
5308: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5309: if (!$udomain) { $udomain=$env{'user.domain'}; }
5310: if (!$uname) { $uname=$env{'user.name'}; }
5311: my $uhome=&homeserver($uname,$udomain);
5312: my $items='';
5313: if (! ref($store)) {
5314: # got a single value, so use that instead
5315: $items = &escape($store).'=&';
5316: } elsif (ref($store) eq 'SCALAR') {
5317: $items = &escape($$store).'=&';
5318: } elsif (ref($store) eq 'ARRAY') {
5319: $items = join('=&',map {&escape($_);} @{$store});
5320: } elsif (ref($store) eq 'HASH') {
5321: while (my($key,$value) = each(%{$store})) {
5322: $items.= &escape($key).'='.&escape($value).'&';
5323: }
5324: }
5325: $items=~s/\&$//;
5326: if ($critical) {
5327: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5328: } else {
5329: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5330: }
5331: }
5332:
5333: # --------------------------------------------------------------- put interface
5334:
5335: sub put {
5336: my ($namespace,$storehash,$udomain,$uname)=@_;
5337: if (!$udomain) { $udomain=$env{'user.domain'}; }
5338: if (!$uname) { $uname=$env{'user.name'}; }
5339: my $uhome=&homeserver($uname,$udomain);
5340: my $items='';
5341: foreach my $item (keys(%$storehash)) {
5342: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5343: }
5344: $items=~s/\&$//;
5345: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5346: }
5347:
5348: # ------------------------------------------------------------ newput interface
5349:
5350: sub newput {
5351: my ($namespace,$storehash,$udomain,$uname)=@_;
5352: if (!$udomain) { $udomain=$env{'user.domain'}; }
5353: if (!$uname) { $uname=$env{'user.name'}; }
5354: my $uhome=&homeserver($uname,$udomain);
5355: my $items='';
5356: foreach my $key (keys(%$storehash)) {
5357: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5358: }
5359: $items=~s/\&$//;
5360: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5361: }
5362:
5363: # --------------------------------------------------------- putstore interface
5364:
5365: sub putstore {
5366: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5367: if (!$udomain) { $udomain=$env{'user.domain'}; }
5368: if (!$uname) { $uname=$env{'user.name'}; }
5369: my $uhome=&homeserver($uname,$udomain);
5370: my $items='';
5371: foreach my $key (keys(%$storehash)) {
5372: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5373: }
5374: $items=~s/\&$//;
5375: my $esc_symb=&escape($symb);
5376: my $esc_v=&escape($version);
5377: my $reply =
5378: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5379: $uhome);
5380: if ($reply eq 'unknown_cmd') {
5381: # gfall back to way things use to be done
5382: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5383: $uname);
5384: }
5385: return $reply;
5386: }
5387:
5388: sub old_putstore {
5389: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5390: if (!$udomain) { $udomain=$env{'user.domain'}; }
5391: if (!$uname) { $uname=$env{'user.name'}; }
5392: my $uhome=&homeserver($uname,$udomain);
5393: my %newstorehash;
5394: foreach my $item (keys(%$storehash)) {
5395: my $key = $version.':'.&escape($symb).':'.$item;
5396: $newstorehash{$key} = $storehash->{$item};
5397: }
5398: my $items='';
5399: my %allitems = ();
5400: foreach my $item (keys(%newstorehash)) {
5401: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5402: my $key = $1.':keys:'.$2;
5403: $allitems{$key} .= $3.':';
5404: }
5405: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5406: }
5407: foreach my $item (keys(%allitems)) {
5408: $allitems{$item} =~ s/\:$//;
5409: $items.= $item.'='.$allitems{$item}.'&';
5410: }
5411: $items=~s/\&$//;
5412: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5413: }
5414:
5415: # ------------------------------------------------------ critical put interface
5416:
5417: sub cput {
5418: my ($namespace,$storehash,$udomain,$uname)=@_;
5419: if (!$udomain) { $udomain=$env{'user.domain'}; }
5420: if (!$uname) { $uname=$env{'user.name'}; }
5421: my $uhome=&homeserver($uname,$udomain);
5422: my $items='';
5423: foreach my $item (keys(%$storehash)) {
5424: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5425: }
5426: $items=~s/\&$//;
5427: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5428: }
5429:
5430: # -------------------------------------------------------------- eget interface
5431:
5432: sub eget {
5433: my ($namespace,$storearr,$udomain,$uname)=@_;
5434: my $items='';
5435: foreach my $item (@$storearr) {
5436: $items.=&escape($item).'&';
5437: }
5438: $items=~s/\&$//;
5439: if (!$udomain) { $udomain=$env{'user.domain'}; }
5440: if (!$uname) { $uname=$env{'user.name'}; }
5441: my $uhome=&homeserver($uname,$udomain);
5442: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5443: my @pairs=split(/\&/,$rep);
5444: my %returnhash=();
5445: my $i=0;
5446: foreach my $item (@$storearr) {
5447: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5448: $i++;
5449: }
5450: return %returnhash;
5451: }
5452:
5453: # ------------------------------------------------------------ tmpput interface
5454: sub tmpput {
5455: my ($storehash,$server,$context)=@_;
5456: my $items='';
5457: foreach my $item (keys(%$storehash)) {
5458: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5459: }
5460: $items=~s/\&$//;
5461: if (defined($context)) {
5462: $items .= ':'.&escape($context);
5463: }
5464: return &reply("tmpput:$items",$server);
5465: }
5466:
5467: # ------------------------------------------------------------ tmpget interface
5468: sub tmpget {
5469: my ($token,$server)=@_;
5470: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5471: my $rep=&reply("tmpget:$token",$server);
5472: my %returnhash;
5473: foreach my $item (split(/\&/,$rep)) {
5474: my ($key,$value)=split(/=/,$item);
5475: next if ($key =~ /^error: 2 /);
5476: $returnhash{&unescape($key)}=&thaw_unescape($value);
5477: }
5478: return %returnhash;
5479: }
5480:
5481: # ------------------------------------------------------------ tmpdel interface
5482: sub tmpdel {
5483: my ($token,$server)=@_;
5484: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5485: return &reply("tmpdel:$token",$server);
5486: }
5487:
5488: # -------------------------------------------------- portfolio access checking
5489:
5490: sub portfolio_access {
5491: my ($requrl) = @_;
5492: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5493: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5494: if ($result) {
5495: my %setters;
5496: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5497: my ($startblock,$endblock) =
5498: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5499: if ($startblock && $endblock) {
5500: return 'B';
5501: }
5502: } else {
5503: my ($startblock,$endblock) =
5504: &Apache::loncommon::blockcheck(\%setters,'port');
5505: if ($startblock && $endblock) {
5506: return 'B';
5507: }
5508: }
5509: }
5510: if ($result eq 'ok') {
5511: return 'F';
5512: } elsif ($result =~ /^[^:]+:guest_/) {
5513: return 'A';
5514: }
5515: return '';
5516: }
5517:
5518: sub get_portfolio_access {
5519: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5520:
5521: if (!ref($access_hash)) {
5522: my $current_perms = &get_portfile_permissions($udom,$unum);
5523: my %access_controls = &get_access_controls($current_perms,$group,
5524: $file_name);
5525: $access_hash = $access_controls{$file_name};
5526: }
5527:
5528: my ($public,$guest,@domains,@users,@courses,@groups);
5529: my $now = time;
5530: if (ref($access_hash) eq 'HASH') {
5531: foreach my $key (keys(%{$access_hash})) {
5532: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5533: if ($start > $now) {
5534: next;
5535: }
5536: if ($end && $end<$now) {
5537: next;
5538: }
5539: if ($scope eq 'public') {
5540: $public = $key;
5541: last;
5542: } elsif ($scope eq 'guest') {
5543: $guest = $key;
5544: } elsif ($scope eq 'domains') {
5545: push(@domains,$key);
5546: } elsif ($scope eq 'users') {
5547: push(@users,$key);
5548: } elsif ($scope eq 'course') {
5549: push(@courses,$key);
5550: } elsif ($scope eq 'group') {
5551: push(@groups,$key);
5552: }
5553: }
5554: if ($public) {
5555: return 'ok';
5556: }
5557: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5558: if ($guest) {
5559: return $guest;
5560: }
5561: } else {
5562: if (@domains > 0) {
5563: foreach my $domkey (@domains) {
5564: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5565: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5566: return 'ok';
5567: }
5568: }
5569: }
5570: }
5571: if (@users > 0) {
5572: foreach my $userkey (@users) {
5573: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5574: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5575: if (ref($item) eq 'HASH') {
5576: if (($item->{'uname'} eq $env{'user.name'}) &&
5577: ($item->{'udom'} eq $env{'user.domain'})) {
5578: return 'ok';
5579: }
5580: }
5581: }
5582: }
5583: }
5584: }
5585: my %roleshash;
5586: my @courses_and_groups = @courses;
5587: push(@courses_and_groups,@groups);
5588: if (@courses_and_groups > 0) {
5589: my (%allgroups,%allroles);
5590: my ($start,$end,$role,$sec,$group);
5591: foreach my $envkey (%env) {
5592: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5593: my $cid = $2.'_'.$3;
5594: if ($1 eq 'gr') {
5595: $group = $4;
5596: $allgroups{$cid}{$group} = $env{$envkey};
5597: } else {
5598: if ($4 eq '') {
5599: $sec = 'none';
5600: } else {
5601: $sec = $4;
5602: }
5603: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5604: }
5605: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5606: my $cid = $2.'_'.$3;
5607: if ($4 eq '') {
5608: $sec = 'none';
5609: } else {
5610: $sec = $4;
5611: }
5612: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5613: }
5614: }
5615: if (keys(%allroles) == 0) {
5616: return;
5617: }
5618: foreach my $key (@courses_and_groups) {
5619: my %content = %{$$access_hash{$key}};
5620: my $cnum = $content{'number'};
5621: my $cdom = $content{'domain'};
5622: my $cid = $cdom.'_'.$cnum;
5623: if (!exists($allroles{$cid})) {
5624: next;
5625: }
5626: foreach my $role_id (keys(%{$content{'roles'}})) {
5627: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5628: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5629: my @status = @{$content{'roles'}{$role_id}{'access'}};
5630: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5631: foreach my $role (keys(%{$allroles{$cid}})) {
5632: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5633: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5634: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5635: if (grep/^all$/,@sections) {
5636: return 'ok';
5637: } else {
5638: if (grep/^$sec$/,@sections) {
5639: return 'ok';
5640: }
5641: }
5642: }
5643: }
5644: if (keys(%{$allgroups{$cid}}) == 0) {
5645: if (grep/^none$/,@groups) {
5646: return 'ok';
5647: }
5648: } else {
5649: if (grep/^all$/,@groups) {
5650: return 'ok';
5651: }
5652: foreach my $group (keys(%{$allgroups{$cid}})) {
5653: if (grep/^$group$/,@groups) {
5654: return 'ok';
5655: }
5656: }
5657: }
5658: }
5659: }
5660: }
5661: }
5662: }
5663: if ($guest) {
5664: return $guest;
5665: }
5666: }
5667: }
5668: return;
5669: }
5670:
5671: sub course_group_datechecker {
5672: my ($dates,$now,$status) = @_;
5673: my ($start,$end) = split(/\./,$dates);
5674: if (!$start && !$end) {
5675: return 'ok';
5676: }
5677: if (grep/^active$/,@{$status}) {
5678: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5679: return 'ok';
5680: }
5681: }
5682: if (grep/^previous$/,@{$status}) {
5683: if ($end > $now ) {
5684: return 'ok';
5685: }
5686: }
5687: if (grep/^future$/,@{$status}) {
5688: if ($start > $now) {
5689: return 'ok';
5690: }
5691: }
5692: return;
5693: }
5694:
5695: sub parse_portfolio_url {
5696: my ($url) = @_;
5697:
5698: my ($type,$udom,$unum,$group,$file_name);
5699:
5700: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5701: $type = 1;
5702: $udom = $1;
5703: $unum = $2;
5704: $file_name = $3;
5705: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5706: $type = 2;
5707: $udom = $1;
5708: $unum = $2;
5709: $group = $3;
5710: $file_name = $3.'/'.$4;
5711: }
5712: if (wantarray) {
5713: return ($type,$udom,$unum,$file_name,$group);
5714: }
5715: return $type;
5716: }
5717:
5718: sub is_portfolio_url {
5719: my ($url) = @_;
5720: return scalar(&parse_portfolio_url($url));
5721: }
5722:
5723: sub is_portfolio_file {
5724: my ($file) = @_;
5725: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5726: return 1;
5727: }
5728: return;
5729: }
5730:
5731: sub usertools_access {
5732: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5733: my ($access,%tools);
5734: if ($context eq '') {
5735: $context = 'tools';
5736: }
5737: if ($context eq 'requestcourses') {
5738: %tools = (
5739: official => 1,
5740: unofficial => 1,
5741: community => 1,
5742: );
5743: } elsif ($context eq 'requestauthor') {
5744: %tools = (
5745: requestauthor => 1,
5746: );
5747: } else {
5748: %tools = (
5749: aboutme => 1,
5750: blog => 1,
5751: webdav => 1,
5752: portfolio => 1,
5753: );
5754: }
5755: return if (!defined($tools{$tool}));
5756:
5757: if ((!defined($udom)) || (!defined($uname))) {
5758: $udom = $env{'user.domain'};
5759: $uname = $env{'user.name'};
5760: }
5761:
5762: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5763: if ($action ne 'reload') {
5764: if ($context eq 'requestcourses') {
5765: return $env{'environment.canrequest.'.$tool};
5766: } elsif ($context eq 'requestauthor') {
5767: return $env{'environment.canrequest.author'};
5768: } else {
5769: return $env{'environment.availabletools.'.$tool};
5770: }
5771: }
5772: }
5773:
5774: my ($toolstatus,$inststatus,$envkey);
5775: if ($context eq 'requestauthor') {
5776: $envkey = $context;
5777: } else {
5778: $envkey = $context.'.'.$tool;
5779: }
5780:
5781: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5782: ($action ne 'reload')) {
5783: $toolstatus = $env{'environment.'.$envkey};
5784: $inststatus = $env{'environment.inststatus'};
5785: } else {
5786: if (ref($userenvref) eq 'HASH') {
5787: $toolstatus = $userenvref->{$envkey};
5788: $inststatus = $userenvref->{'inststatus'};
5789: } else {
5790: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
5791: $toolstatus = $userenv{$envkey};
5792: $inststatus = $userenv{'inststatus'};
5793: }
5794: }
5795:
5796: if ($toolstatus ne '') {
5797: if ($toolstatus) {
5798: $access = 1;
5799: } else {
5800: $access = 0;
5801: }
5802: return $access;
5803: }
5804:
5805: my ($is_adv,%domdef);
5806: if (ref($is_advref) eq 'HASH') {
5807: $is_adv = $is_advref->{'is_adv'};
5808: } else {
5809: $is_adv = &is_advanced_user($udom,$uname);
5810: }
5811: if (ref($domdefref) eq 'HASH') {
5812: %domdef = %{$domdefref};
5813: } else {
5814: %domdef = &get_domain_defaults($udom);
5815: }
5816: if (ref($domdef{$tool}) eq 'HASH') {
5817: if ($is_adv) {
5818: if ($domdef{$tool}{'_LC_adv'} ne '') {
5819: if ($domdef{$tool}{'_LC_adv'}) {
5820: $access = 1;
5821: } else {
5822: $access = 0;
5823: }
5824: return $access;
5825: }
5826: }
5827: if ($inststatus ne '') {
5828: my ($hasaccess,$hasnoaccess);
5829: foreach my $affiliation (split(/:/,$inststatus)) {
5830: if ($domdef{$tool}{$affiliation} ne '') {
5831: if ($domdef{$tool}{$affiliation}) {
5832: $hasaccess = 1;
5833: } else {
5834: $hasnoaccess = 1;
5835: }
5836: }
5837: }
5838: if ($hasaccess || $hasnoaccess) {
5839: if ($hasaccess) {
5840: $access = 1;
5841: } elsif ($hasnoaccess) {
5842: $access = 0;
5843: }
5844: return $access;
5845: }
5846: } else {
5847: if ($domdef{$tool}{'default'} ne '') {
5848: if ($domdef{$tool}{'default'}) {
5849: $access = 1;
5850: } elsif ($domdef{$tool}{'default'} == 0) {
5851: $access = 0;
5852: }
5853: return $access;
5854: }
5855: }
5856: } else {
5857: if (($context eq 'tools') && ($tool ne 'webdav')) {
5858: $access = 1;
5859: } else {
5860: $access = 0;
5861: }
5862: return $access;
5863: }
5864: }
5865:
5866: sub is_course_owner {
5867: my ($cdom,$cnum,$udom,$uname) = @_;
5868: if (($udom eq '') || ($uname eq '')) {
5869: $udom = $env{'user.domain'};
5870: $uname = $env{'user.name'};
5871: }
5872: unless (($udom eq '') || ($uname eq '')) {
5873: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5874: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5875: return 1;
5876: } else {
5877: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5878: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5879: return 1;
5880: }
5881: }
5882: }
5883: }
5884: return;
5885: }
5886:
5887: sub is_advanced_user {
5888: my ($udom,$uname) = @_;
5889: if ($udom ne '' && $uname ne '') {
5890: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5891: if (wantarray) {
5892: return ($env{'user.adv'},$env{'user.author'});
5893: } else {
5894: return $env{'user.adv'};
5895: }
5896: }
5897: }
5898: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5899: my %allroles;
5900: my ($is_adv,$is_author);
5901: foreach my $role (keys(%roleshash)) {
5902: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5903: my $area = '/'.$tdomain.'/'.$trest;
5904: if ($sec ne '') {
5905: $area .= '/'.$sec;
5906: }
5907: if (($area ne '') && ($trole ne '')) {
5908: my $spec=$trole.'.'.$area;
5909: if ($trole =~ /^cr\//) {
5910: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5911: } elsif ($trole ne 'gr') {
5912: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5913: }
5914: if ($trole eq 'au') {
5915: $is_author = 1;
5916: }
5917: }
5918: }
5919: foreach my $role (keys(%allroles)) {
5920: last if ($is_adv);
5921: foreach my $item (split(/:/,$allroles{$role})) {
5922: if ($item ne '') {
5923: my ($privilege,$restrictions)=split(/&/,$item);
5924: if ($privilege eq 'adv') {
5925: $is_adv = 1;
5926: last;
5927: }
5928: }
5929: }
5930: }
5931: if (wantarray) {
5932: return ($is_adv,$is_author);
5933: }
5934: return $is_adv;
5935: }
5936:
5937: sub check_can_request {
5938: my ($dom,$can_request,$request_domains) = @_;
5939: my $canreq = 0;
5940: my ($types,$typename) = &Apache::loncommon::course_types();
5941: my @options = ('approval','validate','autolimit');
5942: my $optregex = join('|',@options);
5943: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5944: foreach my $type (@{$types}) {
5945: if (&usertools_access($env{'user.name'},
5946: $env{'user.domain'},
5947: $type,undef,'requestcourses')) {
5948: $canreq ++;
5949: if (ref($request_domains) eq 'HASH') {
5950: push(@{$request_domains->{$type}},$env{'user.domain'});
5951: }
5952: if ($dom eq $env{'user.domain'}) {
5953: $can_request->{$type} = 1;
5954: }
5955: }
5956: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5957: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5958: if (@curr > 0) {
5959: foreach my $item (@curr) {
5960: if (ref($request_domains) eq 'HASH') {
5961: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5962: if ($otherdom ne '') {
5963: if (ref($request_domains->{$type}) eq 'ARRAY') {
5964: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5965: push(@{$request_domains->{$type}},$otherdom);
5966: }
5967: } else {
5968: push(@{$request_domains->{$type}},$otherdom);
5969: }
5970: }
5971: }
5972: }
5973: unless($dom eq $env{'user.domain'}) {
5974: $canreq ++;
5975: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5976: $can_request->{$type} = 1;
5977: }
5978: }
5979: }
5980: }
5981: }
5982: }
5983: return $canreq;
5984: }
5985:
5986: # ---------------------------------------------- Custom access rule evaluation
5987:
5988: sub customaccess {
5989: my ($priv,$uri)=@_;
5990: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5991: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5992: $udom = &LONCAPA::clean_domain($udom);
5993: $ucrs = &LONCAPA::clean_username($ucrs);
5994: my $access=0;
5995: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5996: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5997: if ($type eq 'user') {
5998: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5999: my ($tdom,$tuname)=split(m{/},$scope);
6000: if ($tdom) {
6001: if ($tdom ne $env{'user.domain'}) { next; }
6002: }
6003: if ($tuname) {
6004: if ($tuname ne $env{'user.name'}) { next; }
6005: }
6006: $access=($effect eq 'allow');
6007: last;
6008: }
6009: } else {
6010: if ($role) {
6011: if ($role ne $urole) { next; }
6012: }
6013: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6014: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6015: if ($tdom) {
6016: if ($tdom ne $udom) { next; }
6017: }
6018: if ($tcrs) {
6019: if ($tcrs ne $ucrs) { next; }
6020: }
6021: if ($tsec) {
6022: if ($tsec ne $usec) { next; }
6023: }
6024: $access=($effect eq 'allow');
6025: last;
6026: }
6027: if ($realm eq '' && $role eq '') {
6028: $access=($effect eq 'allow');
6029: }
6030: }
6031: }
6032: return $access;
6033: }
6034:
6035: # ------------------------------------------------- Check for a user privilege
6036:
6037: sub allowed {
6038: my ($priv,$uri,$symb,$role)=@_;
6039: my $ver_orguri=$uri;
6040: $uri=&deversion($uri);
6041: my $orguri=$uri;
6042: $uri=&declutter($uri);
6043:
6044: if ($priv eq 'evb') {
6045: # Evade communication block restrictions for specified role in a course
6046: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6047: return $1;
6048: } else {
6049: return;
6050: }
6051: }
6052:
6053: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6054: # Free bre access to adm and meta resources
6055: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6056: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6057: && ($priv eq 'bre')) {
6058: return 'F';
6059: }
6060:
6061: # Free bre access to user's own portfolio contents
6062: my ($space,$domain,$name,@dir)=split('/',$uri);
6063: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6064: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6065: my %setters;
6066: my ($startblock,$endblock) =
6067: &Apache::loncommon::blockcheck(\%setters,'port');
6068: if ($startblock && $endblock) {
6069: return 'B';
6070: } else {
6071: return 'F';
6072: }
6073: }
6074:
6075: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6076: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6077: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6078: if (exists($env{'request.course.id'})) {
6079: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6080: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6081: if (($domain eq $cdom) && ($name eq $cnum)) {
6082: my $courseprivid=$env{'request.course.id'};
6083: $courseprivid=~s/\_/\//;
6084: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6085: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6086: return $1;
6087: } else {
6088: if ($env{'request.course.sec'}) {
6089: $courseprivid.='/'.$env{'request.course.sec'};
6090: }
6091: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6092: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6093: return $2;
6094: }
6095: }
6096: }
6097: }
6098: }
6099:
6100: # Free bre to public access
6101:
6102: if ($priv eq 'bre') {
6103: my $copyright=&metadata($uri,'copyright');
6104: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6105: return 'F';
6106: }
6107: if ($copyright eq 'priv') {
6108: $uri=~/([^\/]+)\/([^\/]+)\//;
6109: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6110: return '';
6111: }
6112: }
6113: if ($copyright eq 'domain') {
6114: $uri=~/([^\/]+)\/([^\/]+)\//;
6115: unless (($env{'user.domain'} eq $1) ||
6116: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6117: return '';
6118: }
6119: }
6120: if ($env{'request.role'}=~ /li\.\//) {
6121: # Library role, so allow browsing of resources in this domain.
6122: return 'F';
6123: }
6124: if ($copyright eq 'custom') {
6125: unless (&customaccess($priv,$uri)) { return ''; }
6126: }
6127: }
6128: # Domain coordinator is trying to create a course
6129: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6130: # uri is the requested domain in this case.
6131: # comparison to 'request.role.domain' shows if the user has selected
6132: # a role of dc for the domain in question.
6133: return 'F' if ($uri eq $env{'request.role.domain'});
6134: }
6135:
6136: my $thisallowed='';
6137: my $statecond=0;
6138: my $courseprivid='';
6139:
6140: my $ownaccess;
6141: # Community Coordinator or Assistant Co-author browsing resource space.
6142: if (($priv eq 'bro') && ($env{'user.author'})) {
6143: if ($uri eq '') {
6144: $ownaccess = 1;
6145: } else {
6146: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6147: my $udom = $env{'user.domain'};
6148: my $uname = $env{'user.name'};
6149: if ($uri =~ m{^\Q$udom\E/?$}) {
6150: $ownaccess = 1;
6151: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6152: unless ($uri =~ m{\.\./}) {
6153: $ownaccess = 1;
6154: }
6155: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6156: my $now = time;
6157: if ($uri =~ m{^([^/]+)/?$}) {
6158: my $adom = $1;
6159: foreach my $key (keys(%env)) {
6160: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6161: my ($start,$end) = split('.',$env{$key});
6162: if (($now >= $start) && (!$end || $end < $now)) {
6163: $ownaccess = 1;
6164: last;
6165: }
6166: }
6167: }
6168: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6169: my $adom = $1;
6170: my $aname = $2;
6171: foreach my $role ('ca','aa') {
6172: if ($env{"user.role.$role./$adom/$aname"}) {
6173: my ($start,$end) =
6174: split('.',$env{"user.role.$role./$adom/$aname"});
6175: if (($now >= $start) && (!$end || $end < $now)) {
6176: $ownaccess = 1;
6177: last;
6178: }
6179: }
6180: }
6181: }
6182: }
6183: }
6184: }
6185: }
6186:
6187: # Course
6188:
6189: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6190: unless (($priv eq 'bro') && (!$ownaccess)) {
6191: $thisallowed.=$1;
6192: }
6193: }
6194:
6195: # Domain
6196:
6197: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6198: =~/\Q$priv\E\&([^\:]*)/) {
6199: unless (($priv eq 'bro') && (!$ownaccess)) {
6200: $thisallowed.=$1;
6201: }
6202: }
6203:
6204: # User who is not author or co-author might still be able to edit
6205: # resource of an author in the domain (e.g., if Domain Coordinator).
6206: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6207: (&allowed('mdc',$env{'request.course.id'}))) {
6208: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6209: $thisallowed.=$1;
6210: }
6211: }
6212:
6213: # Course: uri itself is a course
6214: my $courseuri=$uri;
6215: $courseuri=~s/\_(\d)/\/$1/;
6216: $courseuri=~s/^([^\/])/\/$1/;
6217:
6218: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6219: =~/\Q$priv\E\&([^\:]*)/) {
6220: unless (($priv eq 'bro') && (!$ownaccess)) {
6221: $thisallowed.=$1;
6222: }
6223: }
6224:
6225: # URI is an uploaded document for this course, default permissions don't matter
6226: # not allowing 'edit' access (editupload) to uploaded course docs
6227: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6228: $thisallowed='';
6229: my ($match)=&is_on_map($uri);
6230: if ($match) {
6231: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6232: =~/\Q$priv\E\&([^\:]*)/) {
6233: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6234: if (@blockers > 0) {
6235: $thisallowed = 'B';
6236: } else {
6237: $thisallowed.=$1;
6238: }
6239: }
6240: } else {
6241: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6242: if ($refuri) {
6243: if ($refuri =~ m|^/adm/|) {
6244: $thisallowed='F';
6245: } else {
6246: $refuri=&declutter($refuri);
6247: my ($match) = &is_on_map($refuri);
6248: if ($match) {
6249: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6250: if (@blockers > 0) {
6251: $thisallowed = 'B';
6252: } else {
6253: $thisallowed='F';
6254: }
6255: }
6256: }
6257: }
6258: }
6259: }
6260:
6261: if ($priv eq 'bre'
6262: && $thisallowed ne 'F'
6263: && $thisallowed ne '2'
6264: && &is_portfolio_url($uri)) {
6265: $thisallowed = &portfolio_access($uri);
6266: }
6267:
6268: # Full access at system, domain or course-wide level? Exit.
6269: if ($thisallowed=~/F/) {
6270: return 'F';
6271: }
6272:
6273: # If this is generating or modifying users, exit with special codes
6274:
6275: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6276: if (($priv eq 'cca') || ($priv eq 'caa')) {
6277: my ($audom,$auname)=split('/',$uri);
6278: # no author name given, so this just checks on the general right to make a co-author in this domain
6279: unless ($auname) { return $thisallowed; }
6280: # an author name is given, so we are about to actually make a co-author for a certain account
6281: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6282: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6283: ($audom ne $env{'request.role.domain'}))) { return ''; }
6284: }
6285: return $thisallowed;
6286: }
6287: #
6288: # Gathered so far: system, domain and course wide privileges
6289: #
6290: # Course: See if uri or referer is an individual resource that is part of
6291: # the course
6292:
6293: if ($env{'request.course.id'}) {
6294:
6295: $courseprivid=$env{'request.course.id'};
6296: if ($env{'request.course.sec'}) {
6297: $courseprivid.='/'.$env{'request.course.sec'};
6298: }
6299: $courseprivid=~s/\_/\//;
6300: my $checkreferer=1;
6301: my ($match,$cond)=&is_on_map($uri);
6302: if ($match) {
6303: $statecond=$cond;
6304: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6305: =~/\Q$priv\E\&([^\:]*)/) {
6306: my $value = $1;
6307: if ($priv eq 'bre') {
6308: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6309: if (@blockers > 0) {
6310: $thisallowed = 'B';
6311: } else {
6312: $thisallowed.=$value;
6313: }
6314: } else {
6315: $thisallowed.=$value;
6316: }
6317: $checkreferer=0;
6318: }
6319: }
6320:
6321: if ($checkreferer) {
6322: my $refuri=$env{'httpref.'.$orguri};
6323: unless ($refuri) {
6324: foreach my $key (keys(%env)) {
6325: if ($key=~/^httpref\..*\*/) {
6326: my $pattern=$key;
6327: $pattern=~s/^httpref\.\/res\///;
6328: $pattern=~s/\*/\[\^\/\]\+/g;
6329: $pattern=~s/\//\\\//g;
6330: if ($orguri=~/$pattern/) {
6331: $refuri=$env{$key};
6332: }
6333: }
6334: }
6335: }
6336:
6337: if ($refuri) {
6338: $refuri=&declutter($refuri);
6339: my ($match,$cond)=&is_on_map($refuri);
6340: if ($match) {
6341: my $refstatecond=$cond;
6342: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6343: =~/\Q$priv\E\&([^\:]*)/) {
6344: my $value = $1;
6345: if ($priv eq 'bre') {
6346: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6347: if (@blockers > 0) {
6348: $thisallowed = 'B';
6349: } else {
6350: $thisallowed.=$value;
6351: }
6352: } else {
6353: $thisallowed.=$value;
6354: }
6355: $uri=$refuri;
6356: $statecond=$refstatecond;
6357: }
6358: }
6359: }
6360: }
6361: }
6362:
6363: #
6364: # Gathered now: all privileges that could apply, and condition number
6365: #
6366: #
6367: # Full or no access?
6368: #
6369:
6370: if ($thisallowed=~/F/) {
6371: return 'F';
6372: }
6373:
6374: unless ($thisallowed) {
6375: return '';
6376: }
6377:
6378: # Restrictions exist, deal with them
6379: #
6380: # C:according to course preferences
6381: # R:according to resource settings
6382: # L:unless locked
6383: # X:according to user session state
6384: #
6385:
6386: # Possibly locked functionality, check all courses
6387: # Locks might take effect only after 10 minutes cache expiration for other
6388: # courses, and 2 minutes for current course
6389:
6390: my $envkey;
6391: if ($thisallowed=~/L/) {
6392: foreach $envkey (keys(%env)) {
6393: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6394: my $courseid=$2;
6395: my $roleid=$1.'.'.$2;
6396: $courseid=~s/^\///;
6397: my $expiretime=600;
6398: if ($env{'request.role'} eq $roleid) {
6399: $expiretime=120;
6400: }
6401: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6402: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6403: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6404: &coursedescription($courseid,{'freshen_cache' => 1});
6405: }
6406: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6407: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6408: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6409: &log($env{'user.domain'},$env{'user.name'},
6410: $env{'user.home'},
6411: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6412: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6413: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6414: return '';
6415: }
6416: }
6417: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6418: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6419: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6420: &log($env{'user.domain'},$env{'user.name'},
6421: $env{'user.home'},
6422: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6423: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6424: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6425: return '';
6426: }
6427: }
6428: }
6429: }
6430: }
6431:
6432: #
6433: # Rest of the restrictions depend on selected course
6434: #
6435:
6436: unless ($env{'request.course.id'}) {
6437: if ($thisallowed eq 'A') {
6438: return 'A';
6439: } elsif ($thisallowed eq 'B') {
6440: return 'B';
6441: } else {
6442: return '1';
6443: }
6444: }
6445:
6446: #
6447: # Now user is definitely in a course
6448: #
6449:
6450:
6451: # Course preferences
6452:
6453: if ($thisallowed=~/C/) {
6454: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6455: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6456: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6457: =~/\Q$rolecode\E/) {
6458: if (($priv ne 'pch') && ($priv ne 'plc')) {
6459: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6460: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6461: $env{'request.course.id'});
6462: }
6463: return '';
6464: }
6465:
6466: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6467: =~/\Q$unamedom\E/) {
6468: if (($priv ne 'pch') && ($priv ne 'plc')) {
6469: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6470: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6471: $env{'request.course.id'});
6472: }
6473: return '';
6474: }
6475: }
6476:
6477: # Resource preferences
6478:
6479: if ($thisallowed=~/R/) {
6480: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6481: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6482: if (($priv ne 'pch') && ($priv ne 'plc')) {
6483: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6484: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6485: }
6486: return '';
6487: }
6488: }
6489:
6490: # Restricted by state or randomout?
6491:
6492: if ($thisallowed=~/X/) {
6493: if ($env{'acc.randomout'}) {
6494: if (!$symb) { $symb=&symbread($uri,1); }
6495: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6496: return '';
6497: }
6498: }
6499: if (&condval($statecond)) {
6500: return '2';
6501: } else {
6502: return '';
6503: }
6504: }
6505:
6506: if ($thisallowed eq 'A') {
6507: return 'A';
6508: } elsif ($thisallowed eq 'B') {
6509: return 'B';
6510: }
6511: return 'F';
6512: }
6513:
6514: # ------------------------------------------- Check construction space access
6515:
6516: sub constructaccess {
6517: my ($url,$setpriv)=@_;
6518:
6519: # We do not allow editing of previous versions of files
6520: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6521:
6522: # Get username and domain from URL
6523: my ($ownername,$ownerdomain,$ownerhome);
6524:
6525: ($ownerdomain,$ownername) =
6526: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6527:
6528: # The URL does not really point to any authorspace, forget it
6529: unless (($ownername) && ($ownerdomain)) { return ''; }
6530:
6531: # Now we need to see if the user has access to the authorspace of
6532: # $ownername at $ownerdomain
6533:
6534: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6535: # Real author for this?
6536: $ownerhome = $env{'user.home'};
6537: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6538: return ($ownername,$ownerdomain,$ownerhome);
6539: }
6540: } else {
6541: # Co-author for this?
6542: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6543: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6544: $ownerhome = &homeserver($ownername,$ownerdomain);
6545: return ($ownername,$ownerdomain,$ownerhome);
6546: }
6547: }
6548:
6549: # We don't have any access right now. If we are not possibly going to do anything about this,
6550: # we might as well leave
6551: unless ($setpriv) { return ''; }
6552:
6553: # Backdoor access?
6554: my $allowed=&allowed('eco',$ownerdomain);
6555: # Nope
6556: unless ($allowed) { return ''; }
6557: # Looks like we may have access, but could be locked by the owner of the construction space
6558: if ($allowed eq 'U') {
6559: my %blocked=&get('environment',['domcoord.author'],
6560: $ownerdomain,$ownername);
6561: # Is blocked by owner
6562: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
6563: }
6564: if (($allowed eq 'F') || ($allowed eq 'U')) {
6565: # Grant temporary access
6566: my $then=$env{'user.login.time'};
6567: my $update==$env{'user.update.time'};
6568: if (!$update) { $update = $then; }
6569: my $refresh=$env{'user.refresh.time'};
6570: if (!$refresh) { $refresh = $update; }
6571: my $now = time;
6572: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
6573: $now,'ca','constructaccess');
6574: $ownerhome = &homeserver($ownername,$ownerdomain);
6575: return($ownername,$ownerdomain,$ownerhome);
6576: }
6577: # No business here
6578: return '';
6579: }
6580:
6581: sub get_comm_blocks {
6582: my ($cdom,$cnum) = @_;
6583: if ($cdom eq '' || $cnum eq '') {
6584: return unless ($env{'request.course.id'});
6585: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6586: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6587: }
6588: my %commblocks;
6589: my $hashid=$cdom.'_'.$cnum;
6590: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6591: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6592: %commblocks = %{$blocksref};
6593: } else {
6594: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6595: my $cachetime = 600;
6596: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6597: }
6598: return %commblocks;
6599: }
6600:
6601: sub has_comm_blocking {
6602: my ($priv,$symb,$uri,$blocks) = @_;
6603: return unless ($env{'request.course.id'});
6604: return unless ($priv eq 'bre');
6605: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6606: my %commblocks;
6607: if (ref($blocks) eq 'HASH') {
6608: %commblocks = %{$blocks};
6609: } else {
6610: %commblocks = &get_comm_blocks();
6611: }
6612: return unless (keys(%commblocks) > 0);
6613: if (!$symb) { $symb=&symbread($uri,1); }
6614: my ($map,$resid,undef)=&decode_symb($symb);
6615: my %tocheck = (
6616: maps => $map,
6617: resources => $symb,
6618: );
6619: my @blockers;
6620: my $now = time;
6621: my $navmap = Apache::lonnavmaps::navmap->new();
6622: foreach my $block (keys(%commblocks)) {
6623: if ($block =~ /^(\d+)____(\d+)$/) {
6624: my ($start,$end) = ($1,$2);
6625: if ($start <= $now && $end >= $now) {
6626: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6627: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6628: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6629: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6630: unless (grep(/^\Q$block\E$/,@blockers)) {
6631: push(@blockers,$block);
6632: }
6633: }
6634: }
6635: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6636: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6637: unless (grep(/^\Q$block\E$/,@blockers)) {
6638: push(@blockers,$block);
6639: }
6640: }
6641: }
6642: }
6643: }
6644: }
6645: } elsif ($block =~ /^firstaccess____(.+)$/) {
6646: my $item = $1;
6647: my @to_test;
6648: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6649: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6650: my $check_interval;
6651: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6652: my @interval;
6653: my $type = 'map';
6654: if ($item eq 'course') {
6655: $type = 'course';
6656: @interval=&EXT("resource.0.interval");
6657: } else {
6658: if ($item =~ /___\d+___/) {
6659: $type = 'resource';
6660: @interval=&EXT("resource.0.interval",$item);
6661: if (ref($navmap)) {
6662: my $res = $navmap->getBySymb($item);
6663: push(@to_test,$res);
6664: }
6665: } else {
6666: my $mapsymb = &symbread($item,1);
6667: if ($mapsymb) {
6668: if (ref($navmap)) {
6669: my $mapres = $navmap->getBySymb($mapsymb);
6670: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6671: foreach my $res (@to_test) {
6672: my $symb = $res->symb();
6673: next if ($symb eq $mapsymb);
6674: if ($symb ne '') {
6675: @interval=&EXT("resource.0.interval",$symb);
6676: last;
6677: }
6678: }
6679: }
6680: }
6681: }
6682: }
6683: if ($interval[0] =~ /\d+/) {
6684: my $first_access;
6685: if ($type eq 'resource') {
6686: $first_access=&get_first_access($interval[1],$item);
6687: } elsif ($type eq 'map') {
6688: $first_access=&get_first_access($interval[1],undef,$item);
6689: } else {
6690: $first_access=&get_first_access($interval[1]);
6691: }
6692: if ($first_access) {
6693: my $timesup = $first_access+$interval[0];
6694: if ($timesup > $now) {
6695: foreach my $res (@to_test) {
6696: if ($res->is_problem()) {
6697: if ($res->completable()) {
6698: unless (grep(/^\Q$block\E$/,@blockers)) {
6699: push(@blockers,$block);
6700: }
6701: last;
6702: }
6703: }
6704: }
6705: }
6706: }
6707: }
6708: }
6709: }
6710: }
6711: }
6712: }
6713: return @blockers;
6714: }
6715:
6716: sub check_docs_block {
6717: my ($docsblock,$tocheck) =@_;
6718: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6719: return;
6720: }
6721: if (ref($docsblock->{'maps'}) eq 'HASH') {
6722: if ($tocheck->{'maps'}) {
6723: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6724: return 1;
6725: }
6726: }
6727: }
6728: if (ref($docsblock->{'resources'}) eq 'HASH') {
6729: if ($tocheck->{'resources'}) {
6730: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6731: return 1;
6732: }
6733: }
6734: }
6735: return;
6736: }
6737:
6738: #
6739: # Removes the versino from a URI and
6740: # splits it in to its filename and path to the filename.
6741: # Seems like File::Basename could have done this more clearly.
6742: # Parameters:
6743: # $uri - input URI
6744: # Returns:
6745: # Two element list consisting of
6746: # $pathname - the URI up to and excluding the trailing /
6747: # $filename - The part of the URI following the last /
6748: # NOTE:
6749: # Another realization of this is simply:
6750: # use File::Basename;
6751: # ...
6752: # $uri = shift;
6753: # $filename = basename($uri);
6754: # $path = dirname($uri);
6755: # return ($filename, $path);
6756: #
6757: # The implementation below is probably faster however.
6758: #
6759: sub split_uri_for_cond {
6760: my $uri=&deversion(&declutter(shift));
6761: my @uriparts=split(/\//,$uri);
6762: my $filename=pop(@uriparts);
6763: my $pathname=join('/',@uriparts);
6764: return ($pathname,$filename);
6765: }
6766: # --------------------------------------------------- Is a resource on the map?
6767:
6768: sub is_on_map {
6769: my ($pathname,$filename) = &split_uri_for_cond(shift);
6770: #Trying to find the conditional for the file
6771: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6772: /\&\Q$filename\E\:([\d\|]+)\&/);
6773: if ($match) {
6774: return (1,$1);
6775: } else {
6776: return (0,0);
6777: }
6778: }
6779:
6780: # --------------------------------------------------------- Get symb from alias
6781:
6782: sub get_symb_from_alias {
6783: my $symb=shift;
6784: my ($map,$resid,$url)=&decode_symb($symb);
6785: # Already is a symb
6786: if ($url) { return $symb; }
6787: # Must be an alias
6788: my $aliassymb='';
6789: my %bighash;
6790: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6791: &GDBM_READER(),0640)) {
6792: my $rid=$bighash{'mapalias_'.$symb};
6793: if ($rid) {
6794: my ($mapid,$resid)=split(/\./,$rid);
6795: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6796: $resid,$bighash{'src_'.$rid});
6797: }
6798: untie %bighash;
6799: }
6800: return $aliassymb;
6801: }
6802:
6803: # ----------------------------------------------------------------- Define Role
6804:
6805: sub definerole {
6806: if (allowed('mcr','/')) {
6807: my ($rolename,$sysrole,$domrole,$courole)=@_;
6808: foreach my $role (split(':',$sysrole)) {
6809: my ($crole,$cqual)=split(/\&/,$role);
6810: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6811: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6812: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6813: return "refused:s:$crole&$cqual";
6814: }
6815: }
6816: }
6817: foreach my $role (split(':',$domrole)) {
6818: my ($crole,$cqual)=split(/\&/,$role);
6819: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6820: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6821: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6822: return "refused:d:$crole&$cqual";
6823: }
6824: }
6825: }
6826: foreach my $role (split(':',$courole)) {
6827: my ($crole,$cqual)=split(/\&/,$role);
6828: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6829: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6830: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6831: return "refused:c:$crole&$cqual";
6832: }
6833: }
6834: }
6835: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6836: "$env{'user.domain'}:$env{'user.name'}:".
6837: "rolesdef_$rolename=".
6838: escape($sysrole.'_'.$domrole.'_'.$courole);
6839: return reply($command,$env{'user.home'});
6840: } else {
6841: return 'refused';
6842: }
6843: }
6844:
6845: # ---------------- Make a metadata query against the network of library servers
6846:
6847: sub metadata_query {
6848: my ($query,$custom,$customshow,$server_array)=@_;
6849: my %rhash;
6850: my %libserv = &all_library();
6851: my @server_list = (defined($server_array) ? @$server_array
6852: : keys(%libserv) );
6853: for my $server (@server_list) {
6854: unless ($custom or $customshow) {
6855: my $reply=&reply("querysend:".&escape($query),$server);
6856: $rhash{$server}=$reply;
6857: }
6858: else {
6859: my $reply=&reply("querysend:".&escape($query).':'.
6860: &escape($custom).':'.&escape($customshow),
6861: $server);
6862: $rhash{$server}=$reply;
6863: }
6864: }
6865: return \%rhash;
6866: }
6867:
6868: # ----------------------------------------- Send log queries and wait for reply
6869:
6870: sub log_query {
6871: my ($uname,$udom,$query,%filters)=@_;
6872: my $uhome=&homeserver($uname,$udom);
6873: if ($uhome eq 'no_host') { return 'error: no_host'; }
6874: my $uhost=&hostname($uhome);
6875: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6876: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6877: $uhome);
6878: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6879: return get_query_reply($queryid);
6880: }
6881:
6882: # -------------------------- Update MySQL table for portfolio file
6883:
6884: sub update_portfolio_table {
6885: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6886: if ($group ne '') {
6887: $file_name =~s /^\Q$group\E//;
6888: }
6889: my $homeserver = &homeserver($uname,$udom);
6890: my $queryid=
6891: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6892: ':'.&escape($file_name).':'.$action,$homeserver);
6893: my $reply = &get_query_reply($queryid);
6894: return $reply;
6895: }
6896:
6897: # -------------------------- Update MySQL allusers table
6898:
6899: sub update_allusers_table {
6900: my ($uname,$udom,$names) = @_;
6901: my $homeserver = &homeserver($uname,$udom);
6902: my $queryid=
6903: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6904: 'lastname='.&escape($names->{'lastname'}).'%%'.
6905: 'firstname='.&escape($names->{'firstname'}).'%%'.
6906: 'middlename='.&escape($names->{'middlename'}).'%%'.
6907: 'generation='.&escape($names->{'generation'}).'%%'.
6908: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6909: 'id='.&escape($names->{'id'}),$homeserver);
6910: return;
6911: }
6912:
6913: # ------- Request retrieval of institutional classlists for course(s)
6914:
6915: sub fetch_enrollment_query {
6916: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6917: my $homeserver;
6918: my $maxtries = 1;
6919: if ($context eq 'automated') {
6920: $homeserver = $perlvar{'lonHostID'};
6921: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6922: } else {
6923: $homeserver = &homeserver($cnum,$dom);
6924: }
6925: my $host=&hostname($homeserver);
6926: my $cmd = '';
6927: foreach my $affiliate (keys(%{$affiliatesref})) {
6928: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6929: }
6930: $cmd =~ s/%%$//;
6931: $cmd = &escape($cmd);
6932: my $query = 'fetchenrollment';
6933: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6934: unless ($queryid=~/^\Q$host\E\_/) {
6935: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6936: return 'error: '.$queryid;
6937: }
6938: my $reply = &get_query_reply($queryid);
6939: my $tries = 1;
6940: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6941: $reply = &get_query_reply($queryid);
6942: $tries ++;
6943: }
6944: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6945: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6946: } else {
6947: my @responses = split(/:/,$reply);
6948: if ($homeserver eq $perlvar{'lonHostID'}) {
6949: foreach my $line (@responses) {
6950: my ($key,$value) = split(/=/,$line,2);
6951: $$replyref{$key} = $value;
6952: }
6953: } else {
6954: my $pathname = LONCAPA::tempdir();
6955: foreach my $line (@responses) {
6956: my ($key,$value) = split(/=/,$line);
6957: $$replyref{$key} = $value;
6958: if ($value > 0) {
6959: foreach my $item (@{$$affiliatesref{$key}}) {
6960: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6961: my $destname = $pathname.'/'.$filename;
6962: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6963: if ($xml_classlist =~ /^error/) {
6964: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6965: } else {
6966: if ( open(FILE,">$destname") ) {
6967: print FILE &unescape($xml_classlist);
6968: close(FILE);
6969: } else {
6970: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6971: }
6972: }
6973: }
6974: }
6975: }
6976: }
6977: return 'ok';
6978: }
6979: return 'error';
6980: }
6981:
6982: sub get_query_reply {
6983: my $queryid=shift;
6984: my $replyfile=LONCAPA::tempdir().$queryid;
6985: my $reply='';
6986: for (1..100) {
6987: sleep 2;
6988: if (-e $replyfile.'.end') {
6989: if (open(my $fh,$replyfile)) {
6990: $reply = join('',<$fh>);
6991: close($fh);
6992: } else { return 'error: reply_file_error'; }
6993: return &unescape($reply);
6994: }
6995: }
6996: return 'timeout:'.$queryid;
6997: }
6998:
6999: sub courselog_query {
7000: #
7001: # possible filters:
7002: # url: url or symb
7003: # username
7004: # domain
7005: # action: view, submit, grade
7006: # start: timestamp
7007: # end: timestamp
7008: #
7009: my (%filters)=@_;
7010: unless ($env{'request.course.id'}) { return 'no_course'; }
7011: if ($filters{'url'}) {
7012: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7013: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7014: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7015: }
7016: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7017: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7018: return &log_query($cname,$cdom,'courselog',%filters);
7019: }
7020:
7021: sub userlog_query {
7022: #
7023: # possible filters:
7024: # action: log check role
7025: # start: timestamp
7026: # end: timestamp
7027: #
7028: my ($uname,$udom,%filters)=@_;
7029: return &log_query($uname,$udom,'userlog',%filters);
7030: }
7031:
7032: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7033:
7034: sub auto_run {
7035: my ($cnum,$cdom) = @_;
7036: my $response = 0;
7037: my $settings;
7038: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7039: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7040: $settings = $domconfig{'autoenroll'};
7041: if ($settings->{'run'} eq '1') {
7042: $response = 1;
7043: }
7044: } else {
7045: my $homeserver;
7046: if (&is_course($cdom,$cnum)) {
7047: $homeserver = &homeserver($cnum,$cdom);
7048: } else {
7049: $homeserver = &domain($cdom,'primary');
7050: }
7051: if ($homeserver ne 'no_host') {
7052: $response = &reply('autorun:'.$cdom,$homeserver);
7053: }
7054: }
7055: return $response;
7056: }
7057:
7058: sub auto_get_sections {
7059: my ($cnum,$cdom,$inst_coursecode) = @_;
7060: my $homeserver;
7061: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7062: $homeserver = &homeserver($cnum,$cdom);
7063: }
7064: if (!defined($homeserver)) {
7065: if ($cdom =~ /^$match_domain$/) {
7066: $homeserver = &domain($cdom,'primary');
7067: }
7068: }
7069: my @secs;
7070: if (defined($homeserver)) {
7071: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7072: unless ($response eq 'refused') {
7073: @secs = split(/:/,$response);
7074: }
7075: }
7076: return @secs;
7077: }
7078:
7079: sub auto_new_course {
7080: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7081: my $homeserver = &homeserver($cnum,$cdom);
7082: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7083: return $response;
7084: }
7085:
7086: sub auto_validate_courseID {
7087: my ($cnum,$cdom,$inst_course_id) = @_;
7088: my $homeserver = &homeserver($cnum,$cdom);
7089: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7090: return $response;
7091: }
7092:
7093: sub auto_validate_instcode {
7094: my ($cnum,$cdom,$instcode,$owner) = @_;
7095: my ($homeserver,$response);
7096: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7097: $homeserver = &homeserver($cnum,$cdom);
7098: }
7099: if (!defined($homeserver)) {
7100: if ($cdom =~ /^$match_domain$/) {
7101: $homeserver = &domain($cdom,'primary');
7102: }
7103: }
7104: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7105: &escape($instcode).':'.&escape($owner),$homeserver));
7106: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
7107: return ($outcome,$description);
7108: }
7109:
7110: sub auto_create_password {
7111: my ($cnum,$cdom,$authparam,$udom) = @_;
7112: my ($homeserver,$response);
7113: my $create_passwd = 0;
7114: my $authchk = '';
7115: if ($udom =~ /^$match_domain$/) {
7116: $homeserver = &domain($udom,'primary');
7117: }
7118: if ($homeserver eq '') {
7119: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7120: $homeserver = &homeserver($cnum,$cdom);
7121: }
7122: }
7123: if ($homeserver eq '') {
7124: $authchk = 'nodomain';
7125: } else {
7126: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7127: if ($response eq 'refused') {
7128: $authchk = 'refused';
7129: } else {
7130: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7131: }
7132: }
7133: return ($authparam,$create_passwd,$authchk);
7134: }
7135:
7136: sub auto_photo_permission {
7137: my ($cnum,$cdom,$students) = @_;
7138: my $homeserver = &homeserver($cnum,$cdom);
7139: my ($outcome,$perm_reqd,$conditions) =
7140: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7141: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7142: return (undef,undef);
7143: }
7144: return ($outcome,$perm_reqd,$conditions);
7145: }
7146:
7147: sub auto_checkphotos {
7148: my ($uname,$udom,$pid) = @_;
7149: my $homeserver = &homeserver($uname,$udom);
7150: my ($result,$resulttype);
7151: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7152: &escape($uname).':'.&escape($pid),
7153: $homeserver));
7154: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7155: return (undef,undef);
7156: }
7157: if ($outcome) {
7158: ($result,$resulttype) = split(/:/,$outcome);
7159: }
7160: return ($result,$resulttype);
7161: }
7162:
7163: sub auto_photochoice {
7164: my ($cnum,$cdom) = @_;
7165: my $homeserver = &homeserver($cnum,$cdom);
7166: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7167: &escape($cdom),
7168: $homeserver)));
7169: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7170: return (undef,undef);
7171: }
7172: return ($update,$comment);
7173: }
7174:
7175: sub auto_photoupdate {
7176: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7177: my $homeserver = &homeserver($cnum,$dom);
7178: my $host=&hostname($homeserver);
7179: my $cmd = '';
7180: my $maxtries = 1;
7181: foreach my $affiliate (keys(%{$affiliatesref})) {
7182: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7183: }
7184: $cmd =~ s/%%$//;
7185: $cmd = &escape($cmd);
7186: my $query = 'institutionalphotos';
7187: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7188: unless ($queryid=~/^\Q$host\E\_/) {
7189: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7190: return 'error: '.$queryid;
7191: }
7192: my $reply = &get_query_reply($queryid);
7193: my $tries = 1;
7194: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7195: $reply = &get_query_reply($queryid);
7196: $tries ++;
7197: }
7198: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7199: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7200: } else {
7201: my @responses = split(/:/,$reply);
7202: my $outcome = shift(@responses);
7203: foreach my $item (@responses) {
7204: my ($key,$value) = split(/=/,$item);
7205: $$photo{$key} = $value;
7206: }
7207: return $outcome;
7208: }
7209: return 'error';
7210: }
7211:
7212: sub auto_instcode_format {
7213: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7214: $cat_order) = @_;
7215: my $courses = '';
7216: my @homeservers;
7217: if ($caller eq 'global') {
7218: my %servers = &get_servers($codedom,'library');
7219: foreach my $tryserver (keys(%servers)) {
7220: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7221: push(@homeservers,$tryserver);
7222: }
7223: }
7224: } elsif ($caller eq 'requests') {
7225: if ($codedom =~ /^$match_domain$/) {
7226: my $chome = &domain($codedom,'primary');
7227: unless ($chome eq 'no_host') {
7228: push(@homeservers,$chome);
7229: }
7230: }
7231: } else {
7232: push(@homeservers,&homeserver($caller,$codedom));
7233: }
7234: foreach my $code (keys(%{$instcodes})) {
7235: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7236: }
7237: chop($courses);
7238: my $ok_response = 0;
7239: my $response;
7240: while (@homeservers > 0 && $ok_response == 0) {
7241: my $server = shift(@homeservers);
7242: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7243: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7244: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7245: split(/:/,$response);
7246: %{$codes} = (%{$codes},&str2hash($codes_str));
7247: push(@{$codetitles},&str2array($codetitles_str));
7248: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7249: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7250: $ok_response = 1;
7251: }
7252: }
7253: if ($ok_response) {
7254: return 'ok';
7255: } else {
7256: return $response;
7257: }
7258: }
7259:
7260: sub auto_instcode_defaults {
7261: my ($domain,$returnhash,$code_order) = @_;
7262: my @homeservers;
7263:
7264: my %servers = &get_servers($domain,'library');
7265: foreach my $tryserver (keys(%servers)) {
7266: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7267: push(@homeservers,$tryserver);
7268: }
7269: }
7270:
7271: my $response;
7272: foreach my $server (@homeservers) {
7273: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7274: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7275:
7276: foreach my $pair (split(/\&/,$response)) {
7277: my ($name,$value)=split(/\=/,$pair);
7278: if ($name eq 'code_order') {
7279: @{$code_order} = split(/\&/,&unescape($value));
7280: } else {
7281: $returnhash->{&unescape($name)}=&unescape($value);
7282: }
7283: }
7284: return 'ok';
7285: }
7286:
7287: return $response;
7288: }
7289:
7290: sub auto_possible_instcodes {
7291: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7292: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7293: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7294: return;
7295: }
7296: my (@homeservers,$uhome);
7297: if (defined(&domain($domain,'primary'))) {
7298: $uhome=&domain($domain,'primary');
7299: push(@homeservers,&domain($domain,'primary'));
7300: } else {
7301: my %servers = &get_servers($domain,'library');
7302: foreach my $tryserver (keys(%servers)) {
7303: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7304: push(@homeservers,$tryserver);
7305: }
7306: }
7307: }
7308: my $response;
7309: foreach my $server (@homeservers) {
7310: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7311: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7312: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7313: split(':',$response);
7314: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7315: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7316: foreach my $item (split('&',$cat_title)) {
7317: my ($name,$value)=split('=',$item);
7318: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7319: }
7320: foreach my $item (split('&',$cat_order)) {
7321: my ($name,$value)=split('=',$item);
7322: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7323: }
7324: return 'ok';
7325: }
7326: return $response;
7327: }
7328:
7329: sub auto_courserequest_checks {
7330: my ($dom) = @_;
7331: my ($homeserver,%validations);
7332: if ($dom =~ /^$match_domain$/) {
7333: $homeserver = &domain($dom,'primary');
7334: }
7335: unless ($homeserver eq 'no_host') {
7336: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7337: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7338: my @items = split(/&/,$response);
7339: foreach my $item (@items) {
7340: my ($key,$value) = split('=',$item);
7341: $validations{&unescape($key)} = &thaw_unescape($value);
7342: }
7343: }
7344: }
7345: return %validations;
7346: }
7347:
7348: sub auto_courserequest_validation {
7349: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7350: my ($homeserver,$response);
7351: if ($dom =~ /^$match_domain$/) {
7352: $homeserver = &domain($dom,'primary');
7353: }
7354: unless ($homeserver eq 'no_host') {
7355:
7356: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7357: ':'.&escape($crstype).':'.&escape($inststatuslist).
7358: ':'.&escape($instcode).':'.&escape($instseclist),
7359: $homeserver));
7360: }
7361: return $response;
7362: }
7363:
7364: sub auto_validate_class_sec {
7365: my ($cdom,$cnum,$owners,$inst_class) = @_;
7366: my $homeserver = &homeserver($cnum,$cdom);
7367: my $ownerlist;
7368: if (ref($owners) eq 'ARRAY') {
7369: $ownerlist = join(',',@{$owners});
7370: } else {
7371: $ownerlist = $owners;
7372: }
7373: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7374: &escape($ownerlist).':'.$cdom,$homeserver);
7375: return $response;
7376: }
7377:
7378: # ------------------------------------------------------- Course Group routines
7379:
7380: sub get_coursegroups {
7381: my ($cdom,$cnum,$group,$namespace) = @_;
7382: return(&dump($namespace,$cdom,$cnum,$group));
7383: }
7384:
7385: sub modify_coursegroup {
7386: my ($cdom,$cnum,$groupsettings) = @_;
7387: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7388: }
7389:
7390: sub toggle_coursegroup_status {
7391: my ($cdom,$cnum,$group,$action) = @_;
7392: my ($from_namespace,$to_namespace);
7393: if ($action eq 'delete') {
7394: $from_namespace = 'coursegroups';
7395: $to_namespace = 'deleted_groups';
7396: } else {
7397: $from_namespace = 'deleted_groups';
7398: $to_namespace = 'coursegroups';
7399: }
7400: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7401: if (my $tmp = &error(%curr_group)) {
7402: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7403: return ('read error',$tmp);
7404: } else {
7405: my %savedsettings = %curr_group;
7406: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7407: my $deloutcome;
7408: if ($result eq 'ok') {
7409: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7410: } else {
7411: return ('write error',$result);
7412: }
7413: if ($deloutcome eq 'ok') {
7414: return 'ok';
7415: } else {
7416: return ('delete error',$deloutcome);
7417: }
7418: }
7419: }
7420:
7421: sub modify_group_roles {
7422: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7423: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7424: my $role = 'gr/'.&escape($userprivs);
7425: my ($uname,$udom) = split(/:/,$user);
7426: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7427: if ($result eq 'ok') {
7428: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7429: }
7430: return $result;
7431: }
7432:
7433: sub modify_coursegroup_membership {
7434: my ($cdom,$cnum,$membership) = @_;
7435: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7436: return $result;
7437: }
7438:
7439: sub get_active_groups {
7440: my ($udom,$uname,$cdom,$cnum) = @_;
7441: my $now = time;
7442: my %groups = ();
7443: foreach my $key (keys(%env)) {
7444: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7445: my ($start,$end) = split(/\./,$env{$key});
7446: if (($end!=0) && ($end<$now)) { next; }
7447: if (($start!=0) && ($start>$now)) { next; }
7448: if ($1 eq $cdom && $2 eq $cnum) {
7449: $groups{$3} = $env{$key} ;
7450: }
7451: }
7452: }
7453: return %groups;
7454: }
7455:
7456: sub get_group_membership {
7457: my ($cdom,$cnum,$group) = @_;
7458: return(&dump('groupmembership',$cdom,$cnum,$group));
7459: }
7460:
7461: sub get_users_groups {
7462: my ($udom,$uname,$courseid) = @_;
7463: my @usersgroups;
7464: my $cachetime=1800;
7465:
7466: my $hashid="$udom:$uname:$courseid";
7467: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7468: if (defined($cached)) {
7469: @usersgroups = split(/:/,$grouplist);
7470: } else {
7471: $grouplist = '';
7472: my $courseurl = &courseid_to_courseurl($courseid);
7473: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7474: my $access_end = $env{'course.'.$courseid.
7475: '.default_enrollment_end_date'};
7476: my $now = time;
7477: foreach my $key (keys(%roleshash)) {
7478: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7479: my $group = $1;
7480: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7481: my $start = $2;
7482: my $end = $1;
7483: if ($start == -1) { next; } # deleted from group
7484: if (($start!=0) && ($start>$now)) { next; }
7485: if (($end!=0) && ($end<$now)) {
7486: if ($access_end && $access_end < $now) {
7487: if ($access_end - $end < 86400) {
7488: push(@usersgroups,$group);
7489: }
7490: }
7491: next;
7492: }
7493: push(@usersgroups,$group);
7494: }
7495: }
7496: }
7497: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7498: $grouplist = join(':',@usersgroups);
7499: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7500: }
7501: return @usersgroups;
7502: }
7503:
7504: sub devalidate_getgroups_cache {
7505: my ($udom,$uname,$cdom,$cnum)=@_;
7506: my $courseid = $cdom.'_'.$cnum;
7507:
7508: my $hashid="$udom:$uname:$courseid";
7509: &devalidate_cache_new('getgroups',$hashid);
7510: }
7511:
7512: # ------------------------------------------------------------------ Plain Text
7513:
7514: sub plaintext {
7515: my ($short,$type,$cid,$forcedefault) = @_;
7516: if ($short =~ m{^cr/}) {
7517: return (split('/',$short))[-1];
7518: }
7519: if (!defined($cid)) {
7520: $cid = $env{'request.course.id'};
7521: }
7522: my %rolenames = (
7523: Course => 'std',
7524: Community => 'alt1',
7525: );
7526: if ($cid ne '') {
7527: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7528: unless ($forcedefault) {
7529: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7530: &Apache::lonlocal::mt_escape(\$roletext);
7531: return &Apache::lonlocal::mt($roletext);
7532: }
7533: }
7534: }
7535: if ((defined($type)) && (defined($rolenames{$type})) &&
7536: (defined($rolenames{$type})) &&
7537: (defined($prp{$short}{$rolenames{$type}}))) {
7538: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7539: } elsif ($cid ne '') {
7540: my $crstype = $env{'course.'.$cid.'.type'};
7541: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7542: (defined($prp{$short}{$rolenames{$crstype}}))) {
7543: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7544: }
7545: }
7546: return &Apache::lonlocal::mt($prp{$short}{'std'});
7547: }
7548:
7549: # ----------------------------------------------------------------- Assign Role
7550:
7551: sub assignrole {
7552: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7553: $context)=@_;
7554: my $mrole;
7555: if ($role =~ /^cr\//) {
7556: my $cwosec=$url;
7557: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7558: unless (&allowed('ccr',$cwosec)) {
7559: my $refused = 1;
7560: if ($context eq 'requestcourses') {
7561: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7562: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7563: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7564: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7565: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7566: if ($crsenv{'internal.courseowner'} eq
7567: $env{'user.name'}.':'.$env{'user.domain'}) {
7568: $refused = '';
7569: }
7570: }
7571: }
7572: }
7573: }
7574: if ($refused) {
7575: &logthis('Refused custom assignrole: '.
7576: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7577: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7578: return 'refused';
7579: }
7580: }
7581: $mrole='cr';
7582: } elsif ($role =~ /^gr\//) {
7583: my $cwogrp=$url;
7584: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7585: unless (&allowed('mdg',$cwogrp)) {
7586: &logthis('Refused group assignrole: '.
7587: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7588: $env{'user.name'}.' at '.$env{'user.domain'});
7589: return 'refused';
7590: }
7591: $mrole='gr';
7592: } else {
7593: my $cwosec=$url;
7594: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7595: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7596: my $refused;
7597: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7598: if (!(&allowed('c'.$role,$url))) {
7599: $refused = 1;
7600: }
7601: } else {
7602: $refused = 1;
7603: }
7604: if ($refused) {
7605: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7606: if (!$selfenroll && $context eq 'course') {
7607: my %crsenv;
7608: if ($role eq 'cc' || $role eq 'co') {
7609: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7610: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7611: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7612: if ($crsenv{'internal.courseowner'} eq
7613: $env{'user.name'}.':'.$env{'user.domain'}) {
7614: $refused = '';
7615: }
7616: }
7617: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7618: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7619: if ($crsenv{'internal.courseowner'} eq
7620: $env{'user.name'}.':'.$env{'user.domain'}) {
7621: $refused = '';
7622: }
7623: }
7624: }
7625: }
7626: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7627: $refused = '';
7628: } elsif ($context eq 'requestcourses') {
7629: my @possroles = ('st','ta','ep','in','cc','co');
7630: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7631: my $wrongcc;
7632: if ($cnum =~ /^$match_community$/) {
7633: $wrongcc = 1 if ($role eq 'cc');
7634: } else {
7635: $wrongcc = 1 if ($role eq 'co');
7636: }
7637: unless ($wrongcc) {
7638: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7639: if ($crsenv{'internal.courseowner'} eq
7640: $env{'user.name'}.':'.$env{'user.domain'}) {
7641: $refused = '';
7642: }
7643: }
7644: }
7645: } elsif ($context eq 'requestauthor') {
7646: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7647: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
7648: if ($env{'environment.requestauthor'} eq 'automatic') {
7649: $refused = '';
7650: } else {
7651: my %domdefaults = &get_domain_defaults($udom);
7652: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
7653: my $checkbystatus;
7654: if ($env{'user.adv'}) {
7655: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
7656: if ($disposition eq 'automatic') {
7657: $refused = '';
7658: } elsif ($disposition eq '') {
7659: $checkbystatus = 1;
7660: }
7661: } else {
7662: $checkbystatus = 1;
7663: }
7664: if ($checkbystatus) {
7665: if ($env{'environment.inststatus'}) {
7666: my @inststatuses = split(/,/,$env{'environment.inststatus'});
7667: foreach my $type (@inststatuses) {
7668: if (($type ne '') &&
7669: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
7670: $refused = '';
7671: }
7672: }
7673: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
7674: $refused = '';
7675: }
7676: }
7677: }
7678: }
7679: }
7680: }
7681: if ($refused) {
7682: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7683: ' '.$role.' '.$end.' '.$start.' by '.
7684: $env{'user.name'}.' at '.$env{'user.domain'});
7685: return 'refused';
7686: }
7687: }
7688: } elsif ($role eq 'au') {
7689: if ($url ne '/'.$udom.'/') {
7690: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7691: ' to assign author role for '.$uname.':'.$udom.
7692: ' in domain: '.$url.' refused (wrong domain).');
7693: return 'refused';
7694: }
7695: }
7696: $mrole=$role;
7697: }
7698: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7699: "$udom:$uname:$url".'_'."$mrole=$role";
7700: if ($end) { $command.='_'.$end; }
7701: if ($start) {
7702: if ($end) {
7703: $command.='_'.$start;
7704: } else {
7705: $command.='_0_'.$start;
7706: }
7707: }
7708: my $origstart = $start;
7709: my $origend = $end;
7710: my $delflag;
7711: # actually delete
7712: if ($deleteflag) {
7713: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7714: # modify command to delete the role
7715: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7716: "$udom:$uname:$url".'_'."$mrole";
7717: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7718: # set start and finish to negative values for userrolelog
7719: $start=-1;
7720: $end=-1;
7721: $delflag = 1;
7722: }
7723: }
7724: # send command
7725: my $answer=&reply($command,&homeserver($uname,$udom));
7726: # log new user role if status is ok
7727: if ($answer eq 'ok') {
7728: &userrolelog($role,$uname,$udom,$url,$start,$end);
7729: # for course roles, perform group memberships changes triggered by role change.
7730: unless ($role =~ /^gr/) {
7731: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7732: $origstart,$selfenroll,$context);
7733: }
7734: if (($role eq 'cc') || ($role eq 'in') ||
7735: ($role eq 'ep') || ($role eq 'ad') ||
7736: ($role eq 'ta') || ($role eq 'st') ||
7737: ($role=~/^cr/) || ($role eq 'gr') ||
7738: ($role eq 'co')) {
7739: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7740: $selfenroll,$context);
7741: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
7742: ($role eq 'au') || ($role eq 'dc')) {
7743: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7744: $context);
7745: } elsif (($role eq 'ca') || ($role eq 'aa')) {
7746: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7747: $context);
7748: }
7749: if ($role eq 'cc') {
7750: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7751: }
7752: }
7753: return $answer;
7754: }
7755:
7756: sub autoupdate_coowners {
7757: my ($url,$end,$start,$uname,$udom) = @_;
7758: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7759: if (($cdom ne '') && ($cnum ne '')) {
7760: my $now = time;
7761: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7762: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7763: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7764: my $instcode = $coursehash{'internal.coursecode'};
7765: if ($instcode ne '') {
7766: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7767: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7768: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7769: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7770: if ($result eq 'valid') {
7771: if ($coursehash{'internal.co-owners'}) {
7772: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7773: push(@newcoowners,$coowner);
7774: }
7775: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7776: push(@newcoowners,$uname.':'.$udom);
7777: }
7778: @newcoowners = sort(@newcoowners);
7779: } else {
7780: push(@newcoowners,$uname.':'.$udom);
7781: }
7782: } else {
7783: if ($coursehash{'internal.co-owners'}) {
7784: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7785: unless ($coowner eq $uname.':'.$udom) {
7786: push(@newcoowners,$coowner);
7787: }
7788: }
7789: unless (@newcoowners > 0) {
7790: $delcoowners = 1;
7791: $coowners = '';
7792: }
7793: }
7794: }
7795: if (@newcoowners || $delcoowners) {
7796: &store_coowners($cdom,$cnum,$coursehash{'home'},
7797: $delcoowners,@newcoowners);
7798: }
7799: }
7800: }
7801: }
7802: }
7803: }
7804: }
7805:
7806: sub store_coowners {
7807: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
7808: my $cid = $cdom.'_'.$cnum;
7809: my ($coowners,$delresult,$putresult);
7810: if (@newcoowners) {
7811: $coowners = join(',',@newcoowners);
7812: my %coownershash = (
7813: 'internal.co-owners' => $coowners,
7814: );
7815: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
7816: if ($putresult eq 'ok') {
7817: if ($env{'course.'.$cid.'.num'} eq $cnum) {
7818: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
7819: }
7820: }
7821: }
7822: if ($delcoowners) {
7823: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
7824: if ($delresult eq 'ok') {
7825: if ($env{'course.'.$cid.'.internal.co-owners'}) {
7826: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
7827: }
7828: }
7829: }
7830: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
7831: my %crsinfo =
7832: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
7833: if (ref($crsinfo{$cid}) eq 'HASH') {
7834: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
7835: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
7836: }
7837: }
7838: }
7839:
7840: # -------------------------------------------------- Modify user authentication
7841: # Overrides without validation
7842:
7843: sub modifyuserauth {
7844: my ($udom,$uname,$umode,$upass)=@_;
7845: my $uhome=&homeserver($uname,$udom);
7846: unless (&allowed('mau',$udom)) { return 'refused'; }
7847: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
7848: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7849: ' in domain '.$env{'request.role.domain'});
7850: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7851: &escape($upass),$uhome);
7852: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7853: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7854: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7855: &log($udom,,$uname,$uhome,
7856: 'Authentication changed by '.$env{'user.domain'}.', '.
7857: $env{'user.name'}.', '.$umode.
7858: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7859: unless ($reply eq 'ok') {
7860: &logthis('Authentication mode error: '.$reply);
7861: return 'error: '.$reply;
7862: }
7863: return 'ok';
7864: }
7865:
7866: # --------------------------------------------------------------- Modify a user
7867:
7868: sub modifyuser {
7869: my ($udom, $uname, $uid,
7870: $umode, $upass, $first,
7871: $middle, $last, $gene,
7872: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7873: $udom= &LONCAPA::clean_domain($udom);
7874: $uname=&LONCAPA::clean_username($uname);
7875: my $showcandelete = 'none';
7876: if (ref($candelete) eq 'ARRAY') {
7877: if (@{$candelete} > 0) {
7878: $showcandelete = join(', ',@{$candelete});
7879: }
7880: }
7881: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7882: $umode.', '.$first.', '.$middle.', '.
7883: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7884: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7885: ' desiredhome not specified').
7886: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7887: ' in domain '.$env{'request.role.domain'});
7888: my $uhome=&homeserver($uname,$udom,'true');
7889: my $newuser;
7890: if ($uhome eq 'no_host') {
7891: $newuser = 1;
7892: }
7893: # ----------------------------------------------------------------- Create User
7894: if (($uhome eq 'no_host') &&
7895: (($umode && $upass) || ($umode eq 'localauth'))) {
7896: my $unhome='';
7897: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7898: $unhome = $desiredhome;
7899: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7900: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7901: } else { # load balancing routine for determining $unhome
7902: my $loadm=10000000;
7903: my %servers = &get_servers($udom,'library');
7904: foreach my $tryserver (keys(%servers)) {
7905: my $answer=reply('load',$tryserver);
7906: if (($answer=~/\d+/) && ($answer<$loadm)) {
7907: $loadm=$answer;
7908: $unhome=$tryserver;
7909: }
7910: }
7911: }
7912: if (($unhome eq '') || ($unhome eq 'no_host')) {
7913: return 'error: unable to find a home server for '.$uname.
7914: ' in domain '.$udom;
7915: }
7916: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7917: &escape($upass),$unhome);
7918: unless ($reply eq 'ok') {
7919: return 'error: '.$reply;
7920: }
7921: $uhome=&homeserver($uname,$udom,'true');
7922: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7923: return 'error: unable verify users home machine.';
7924: }
7925: } # End of creation of new user
7926: # ---------------------------------------------------------------------- Add ID
7927: if ($uid) {
7928: $uid=~tr/A-Z/a-z/;
7929: my %uidhash=&idrget($udom,$uname);
7930: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7931: && (!$forceid)) {
7932: unless ($uid eq $uidhash{$uname}) {
7933: return 'error: user id "'.$uid.'" does not match '.
7934: 'current user id "'.$uidhash{$uname}.'".';
7935: }
7936: } else {
7937: &idput($udom,($uname => $uid));
7938: }
7939: }
7940: # -------------------------------------------------------------- Add names, etc
7941: my @tmp=&get('environment',
7942: ['firstname','middlename','lastname','generation','id',
7943: 'permanentemail','inststatus'],
7944: $udom,$uname);
7945: my (%names,%oldnames);
7946: if ($tmp[0] =~ m/^error:.*/) {
7947: %names=();
7948: } else {
7949: %names = @tmp;
7950: %oldnames = %names;
7951: }
7952: #
7953: # If name, email and/or uid are blank (e.g., because an uploaded file
7954: # of users did not contain them), do not overwrite existing values
7955: # unless field is in $candelete array ref.
7956: #
7957:
7958: my @fields = ('firstname','middlename','lastname','generation',
7959: 'permanentemail','id');
7960: my %newvalues;
7961: if (ref($candelete) eq 'ARRAY') {
7962: foreach my $field (@fields) {
7963: if (grep(/^\Q$field\E$/,@{$candelete})) {
7964: if ($field eq 'firstname') {
7965: $names{$field} = $first;
7966: } elsif ($field eq 'middlename') {
7967: $names{$field} = $middle;
7968: } elsif ($field eq 'lastname') {
7969: $names{$field} = $last;
7970: } elsif ($field eq 'generation') {
7971: $names{$field} = $gene;
7972: } elsif ($field eq 'permanentemail') {
7973: $names{$field} = $email;
7974: } elsif ($field eq 'id') {
7975: $names{$field} = $uid;
7976: }
7977: }
7978: }
7979: }
7980: if ($first) { $names{'firstname'} = $first; }
7981: if (defined($middle)) { $names{'middlename'} = $middle; }
7982: if ($last) { $names{'lastname'} = $last; }
7983: if (defined($gene)) { $names{'generation'} = $gene; }
7984: if ($email) {
7985: $email=~s/[^\w\@\.\-\,]//gs;
7986: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
7987: }
7988: if ($uid) { $names{'id'} = $uid; }
7989: if (defined($inststatus)) {
7990: $names{'inststatus'} = '';
7991: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
7992: if (ref($usertypes) eq 'HASH') {
7993: my @okstatuses;
7994: foreach my $item (split(/:/,$inststatus)) {
7995: if (defined($usertypes->{$item})) {
7996: push(@okstatuses,$item);
7997: }
7998: }
7999: if (@okstatuses) {
8000: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8001: }
8002: }
8003: }
8004: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8005: $umode.', '.$first.', '.$middle.', '.
8006: $last.', '.$gene.', '.$email.', '.$inststatus;
8007: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8008: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8009: } else {
8010: $logmsg .= ' during self creation';
8011: }
8012: my $changed;
8013: if ($newuser) {
8014: $changed = 1;
8015: } else {
8016: foreach my $field (@fields) {
8017: if ($names{$field} ne $oldnames{$field}) {
8018: $changed = 1;
8019: last;
8020: }
8021: }
8022: }
8023: unless ($changed) {
8024: $logmsg = 'No changes in user information needed for: '.$logmsg;
8025: &logthis($logmsg);
8026: return 'ok';
8027: }
8028: my $reply = &put('environment', \%names, $udom,$uname);
8029: if ($reply ne 'ok') {
8030: return 'error: '.$reply;
8031: }
8032: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8033: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8034: }
8035: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8036: &devalidate_cache_new('namescache',$uname.':'.$udom);
8037: $logmsg = 'Success modifying user '.$logmsg;
8038: &logthis($logmsg);
8039: return 'ok';
8040: }
8041:
8042: # -------------------------------------------------------------- Modify student
8043:
8044: sub modifystudent {
8045: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8046: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8047: $selfenroll,$context,$inststatus)=@_;
8048: if (!$cid) {
8049: unless ($cid=$env{'request.course.id'}) {
8050: return 'not_in_class';
8051: }
8052: }
8053: # --------------------------------------------------------------- Make the user
8054: my $reply=&modifyuser
8055: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8056: $desiredhome,$email,$inststatus);
8057: unless ($reply eq 'ok') { return $reply; }
8058: # This will cause &modify_student_enrollment to get the uid from the
8059: # students environment
8060: $uid = undef if (!$forceid);
8061: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8062: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
8063: return $reply;
8064: }
8065:
8066: sub modify_student_enrollment {
8067: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
8068: my ($cdom,$cnum,$chome);
8069: if (!$cid) {
8070: unless ($cid=$env{'request.course.id'}) {
8071: return 'not_in_class';
8072: }
8073: $cdom=$env{'course.'.$cid.'.domain'};
8074: $cnum=$env{'course.'.$cid.'.num'};
8075: } else {
8076: ($cdom,$cnum)=split(/_/,$cid);
8077: }
8078: $chome=$env{'course.'.$cid.'.home'};
8079: if (!$chome) {
8080: $chome=&homeserver($cnum,$cdom);
8081: }
8082: if (!$chome) { return 'unknown_course'; }
8083: # Make sure the user exists
8084: my $uhome=&homeserver($uname,$udom);
8085: if (($uhome eq '') || ($uhome eq 'no_host')) {
8086: return 'error: no such user';
8087: }
8088: # Get student data if we were not given enough information
8089: if (!defined($first) || $first eq '' ||
8090: !defined($last) || $last eq '' ||
8091: !defined($uid) || $uid eq '' ||
8092: !defined($middle) || $middle eq '' ||
8093: !defined($gene) || $gene eq '') {
8094: # They did not supply us with enough data to enroll the student, so
8095: # we need to pick up more information.
8096: my %tmp = &get('environment',
8097: ['firstname','middlename','lastname', 'generation','id']
8098: ,$udom,$uname);
8099:
8100: #foreach my $key (keys(%tmp)) {
8101: # &logthis("key $key = ".$tmp{$key});
8102: #}
8103: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8104: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8105: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8106: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8107: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8108: }
8109: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8110: my $user = "$uname:$udom";
8111: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8112: my $reply=cput('classlist',
8113: {$user =>
8114: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
8115: $cdom,$cnum);
8116: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8117: &devalidate_getsection_cache($udom,$uname,$cid);
8118: } else {
8119: return 'error: '.$reply;
8120: }
8121: # Add student role to user
8122: my $uurl='/'.$cid;
8123: $uurl=~s/\_/\//g;
8124: if ($usec) {
8125: $uurl.='/'.$usec;
8126: }
8127: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8128: $selfenroll,$context);
8129: if ($result ne 'ok') {
8130: if ($old_entry{$user} ne '') {
8131: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8132: } else {
8133: $reply = &del('classlist',[$user],$cdom,$cnum);
8134: }
8135: }
8136: return $result;
8137: }
8138:
8139: sub format_name {
8140: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8141: my $name;
8142: if ($first ne 'lastname') {
8143: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8144: } else {
8145: if ($lastname=~/\S/) {
8146: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8147: $name=~s/\s+,/,/;
8148: } else {
8149: $name.= $firstname.' '.$middlename.' '.$generation;
8150: }
8151: }
8152: $name=~s/^\s+//;
8153: $name=~s/\s+$//;
8154: $name=~s/\s+/ /g;
8155: return $name;
8156: }
8157:
8158: # ------------------------------------------------- Write to course preferences
8159:
8160: sub writecoursepref {
8161: my ($courseid,%prefs)=@_;
8162: $courseid=~s/^\///;
8163: $courseid=~s/\_/\//g;
8164: my ($cdomain,$cnum)=split(/\//,$courseid);
8165: my $chome=homeserver($cnum,$cdomain);
8166: if (($chome eq '') || ($chome eq 'no_host')) {
8167: return 'error: no such course';
8168: }
8169: my $cstring='';
8170: foreach my $pref (keys(%prefs)) {
8171: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8172: }
8173: $cstring=~s/\&$//;
8174: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8175: }
8176:
8177: # ---------------------------------------------------------- Make/modify course
8178:
8179: sub createcourse {
8180: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8181: $course_owner,$crstype,$cnum,$context,$category)=@_;
8182: $url=&declutter($url);
8183: my $cid='';
8184: if ($context eq 'requestcourses') {
8185: my $can_create = 0;
8186: my ($ownername,$ownerdom) = split(':',$course_owner);
8187: if ($udom eq $ownerdom) {
8188: if (&usertools_access($ownername,$ownerdom,$category,undef,
8189: $context)) {
8190: $can_create = 1;
8191: }
8192: } else {
8193: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8194: $category);
8195: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8196: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8197: if (@curr > 0) {
8198: my @options = qw(approval validate autolimit);
8199: my $optregex = join('|',@options);
8200: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8201: $can_create = 1;
8202: }
8203: }
8204: }
8205: }
8206: if ($can_create) {
8207: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8208: unless (&allowed('ccc',$udom)) {
8209: return 'refused';
8210: }
8211: }
8212: } else {
8213: return 'refused';
8214: }
8215: } elsif (!&allowed('ccc',$udom)) {
8216: return 'refused';
8217: }
8218: # --------------------------------------------------------------- Get Unique ID
8219: my $uname;
8220: if ($cnum =~ /^$match_courseid$/) {
8221: my $chome=&homeserver($cnum,$udom,'true');
8222: if (($chome eq '') || ($chome eq 'no_host')) {
8223: $uname = $cnum;
8224: } else {
8225: $uname = &generate_coursenum($udom,$crstype);
8226: }
8227: } else {
8228: $uname = &generate_coursenum($udom,$crstype);
8229: }
8230: return $uname if ($uname =~ /^error/);
8231: # -------------------------------------------------- Check supplied server name
8232: if (!defined($course_server)) {
8233: if (defined(&domain($udom,'primary'))) {
8234: $course_server = &domain($udom,'primary');
8235: } else {
8236: $course_server = $env{'user.home'};
8237: }
8238: }
8239: my %host_servers =
8240: &Apache::lonnet::get_servers($udom,'library');
8241: unless ($host_servers{$course_server}) {
8242: return 'error: invalid home server for course: '.$course_server;
8243: }
8244: # ------------------------------------------------------------- Make the course
8245: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8246: $course_server);
8247: unless ($reply eq 'ok') { return 'error: '.$reply; }
8248: my $uhome=&homeserver($uname,$udom,'true');
8249: if (($uhome eq '') || ($uhome eq 'no_host')) {
8250: return 'error: no such course';
8251: }
8252: # ----------------------------------------------------------------- Course made
8253: # log existence
8254: my $now = time;
8255: my $newcourse = {
8256: $udom.'_'.$uname => {
8257: description => $description,
8258: inst_code => $inst_code,
8259: owner => $course_owner,
8260: type => $crstype,
8261: creator => $env{'user.name'}.':'.
8262: $env{'user.domain'},
8263: created => $now,
8264: context => $context,
8265: },
8266: };
8267: &courseidput($udom,$newcourse,$uhome,'notime');
8268: # set toplevel url
8269: my $topurl=$url;
8270: unless ($nonstandard) {
8271: # ------------------------------------------ For standard courses, make top url
8272: my $mapurl=&clutter($url);
8273: if ($mapurl eq '/res/') { $mapurl=''; }
8274: $env{'form.initmap'}=(<<ENDINITMAP);
8275: <map>
8276: <resource id="1" type="start"></resource>
8277: <resource id="2" src="$mapurl"></resource>
8278: <resource id="3" type="finish"></resource>
8279: <link index="1" from="1" to="2"></link>
8280: <link index="2" from="2" to="3"></link>
8281: </map>
8282: ENDINITMAP
8283: $topurl=&declutter(
8284: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8285: );
8286: }
8287: # ----------------------------------------------------------- Write preferences
8288: &writecoursepref($udom.'_'.$uname,
8289: ('description' => $description,
8290: 'url' => $topurl,
8291: 'internal.creator' => $env{'user.name'}.':'.
8292: $env{'user.domain'},
8293: 'internal.created' => $now,
8294: 'internal.creationcontext' => $context)
8295: );
8296: return '/'.$udom.'/'.$uname;
8297: }
8298:
8299: # ------------------------------------------------------------------- Create ID
8300: sub generate_coursenum {
8301: my ($udom,$crstype) = @_;
8302: my $domdesc = &domain($udom);
8303: return 'error: invalid domain' if ($domdesc eq '');
8304: my $first;
8305: if ($crstype eq 'Community') {
8306: $first = '0';
8307: } else {
8308: $first = int(1+rand(9));
8309: }
8310: my $uname=$first.
8311: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8312: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8313: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8314: # ----------------------------------------------- Make sure that does not exist
8315: my $uhome=&homeserver($uname,$udom,'true');
8316: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8317: if ($crstype eq 'Community') {
8318: $first = '0';
8319: } else {
8320: $first = int(1+rand(9));
8321: }
8322: $uname=$first.
8323: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8324: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8325: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8326: $uhome=&homeserver($uname,$udom,'true');
8327: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8328: return 'error: unable to generate unique course-ID';
8329: }
8330: }
8331: return $uname;
8332: }
8333:
8334: sub is_course {
8335: my ($cdom, $cnum) = scalar(@_) == 1 ?
8336: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8337:
8338: return unless $cdom and $cnum;
8339:
8340: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8341: '.');
8342:
8343: return unless exists($courses{$cdom.'_'.$cnum});
8344: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8345: }
8346:
8347: sub store_userdata {
8348: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8349: my $result;
8350: if ($datakey ne '') {
8351: if (ref($storehash) eq 'HASH') {
8352: if ($udom eq '' || $uname eq '') {
8353: $udom = $env{'user.domain'};
8354: $uname = $env{'user.name'};
8355: }
8356: my $uhome=&homeserver($uname,$udom);
8357: if (($uhome eq '') || ($uhome eq 'no_host')) {
8358: $result = 'error: no_host';
8359: } else {
8360: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8361: $storehash->{'host'} = $perlvar{'lonHostID'};
8362:
8363: my $namevalue='';
8364: foreach my $key (keys(%{$storehash})) {
8365: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8366: }
8367: $namevalue=~s/\&$//;
8368: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8369: $namevalue,$uhome);
8370: }
8371: } else {
8372: $result = 'error: data to store was not a hash reference';
8373: }
8374: } else {
8375: $result= 'error: invalid requestkey';
8376: }
8377: return $result;
8378: }
8379:
8380: # ---------------------------------------------------------- Assign Custom Role
8381:
8382: sub assigncustomrole {
8383: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8384: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8385: $end,$start,$deleteflag,$selfenroll,$context);
8386: }
8387:
8388: # ----------------------------------------------------------------- Revoke Role
8389:
8390: sub revokerole {
8391: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8392: my $now=time;
8393: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8394: }
8395:
8396: # ---------------------------------------------------------- Revoke Custom Role
8397:
8398: sub revokecustomrole {
8399: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8400: my $now=time;
8401: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8402: $deleteflag,$selfenroll,$context);
8403: }
8404:
8405: # ------------------------------------------------------------ Disk usage
8406: sub diskusage {
8407: my ($udom,$uname,$directorypath,$getpropath)=@_;
8408: $directorypath =~ s/\/$//;
8409: my $listing=&reply('du2:'.&escape($directorypath).':'
8410: .&escape($getpropath).':'.&escape($uname).':'
8411: .&escape($udom),homeserver($uname,$udom));
8412: if ($listing eq 'unknown_cmd') {
8413: if ($getpropath) {
8414: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8415: }
8416: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8417: }
8418: return $listing;
8419: }
8420:
8421: sub is_locked {
8422: my ($file_name, $domain, $user, $which) = @_;
8423: my @check;
8424: my $is_locked;
8425: push (@check,$file_name);
8426: my %locked = &get('file_permissions',\@check,
8427: $env{'user.domain'},$env{'user.name'});
8428: my ($tmp)=keys(%locked);
8429: if ($tmp=~/^error:/) { undef(%locked); }
8430:
8431: if (ref($locked{$file_name}) eq 'ARRAY') {
8432: $is_locked = 'false';
8433: foreach my $entry (@{$locked{$file_name}}) {
8434: if (ref($entry) eq 'ARRAY') {
8435: $is_locked = 'true';
8436: if (ref($which) eq 'ARRAY') {
8437: push(@{$which},$entry);
8438: } else {
8439: last;
8440: }
8441: }
8442: }
8443: } else {
8444: $is_locked = 'false';
8445: }
8446: return $is_locked;
8447: }
8448:
8449: sub declutter_portfile {
8450: my ($file) = @_;
8451: $file =~ s{^(/portfolio/|portfolio/)}{/};
8452: return $file;
8453: }
8454:
8455: # ------------------------------------------------------------- Mark as Read Only
8456:
8457: sub mark_as_readonly {
8458: my ($domain,$user,$files,$what) = @_;
8459: my %current_permissions = &dump('file_permissions',$domain,$user);
8460: my ($tmp)=keys(%current_permissions);
8461: if ($tmp=~/^error:/) { undef(%current_permissions); }
8462: foreach my $file (@{$files}) {
8463: $file = &declutter_portfile($file);
8464: push(@{$current_permissions{$file}},$what);
8465: }
8466: &put('file_permissions',\%current_permissions,$domain,$user);
8467: return;
8468: }
8469:
8470: # ------------------------------------------------------------Save Selected Files
8471:
8472: sub save_selected_files {
8473: my ($user, $path, @files) = @_;
8474: my $filename = $user."savedfiles";
8475: my @other_files = &files_not_in_path($user, $path);
8476: open (OUT, '>'.$tmpdir.$filename);
8477: foreach my $file (@files) {
8478: print (OUT $env{'form.currentpath'}.$file."\n");
8479: }
8480: foreach my $file (@other_files) {
8481: print (OUT $file."\n");
8482: }
8483: close (OUT);
8484: return 'ok';
8485: }
8486:
8487: sub clear_selected_files {
8488: my ($user) = @_;
8489: my $filename = $user."savedfiles";
8490: open (OUT, '>'.LONCAPA::tempdir().$filename);
8491: print (OUT undef);
8492: close (OUT);
8493: return ("ok");
8494: }
8495:
8496: sub files_in_path {
8497: my ($user, $path) = @_;
8498: my $filename = $user."savedfiles";
8499: my %return_files;
8500: open (IN, '<'.LONCAPA::tempdir().$filename);
8501: while (my $line_in = <IN>) {
8502: chomp ($line_in);
8503: my @paths_and_file = split (m!/!, $line_in);
8504: my $file_part = pop (@paths_and_file);
8505: my $path_part = join ('/', @paths_and_file);
8506: $path_part.='/';
8507: my $path_and_file = $path_part.$file_part;
8508: if ($path_part eq $path) {
8509: $return_files{$file_part}= 'selected';
8510: }
8511: }
8512: close (IN);
8513: return (\%return_files);
8514: }
8515:
8516: # called in portfolio select mode, to show files selected NOT in current directory
8517: sub files_not_in_path {
8518: my ($user, $path) = @_;
8519: my $filename = $user."savedfiles";
8520: my @return_files;
8521: my $path_part;
8522: open(IN, '<'.LONCAPA::.$filename);
8523: while (my $line = <IN>) {
8524: #ok, I know it's clunky, but I want it to work
8525: my @paths_and_file = split(m|/|, $line);
8526: my $file_part = pop(@paths_and_file);
8527: chomp($file_part);
8528: my $path_part = join('/', @paths_and_file);
8529: $path_part .= '/';
8530: my $path_and_file = $path_part.$file_part;
8531: if ($path_part ne $path) {
8532: push(@return_files, ($path_and_file));
8533: }
8534: }
8535: close(OUT);
8536: return (@return_files);
8537: }
8538:
8539: #----------------------------------------------Get portfolio file permissions
8540:
8541: sub get_portfile_permissions {
8542: my ($domain,$user) = @_;
8543: my %current_permissions = &dump('file_permissions',$domain,$user);
8544: my ($tmp)=keys(%current_permissions);
8545: if ($tmp=~/^error:/) { undef(%current_permissions); }
8546: return \%current_permissions;
8547: }
8548:
8549: #---------------------------------------------Get portfolio file access controls
8550:
8551: sub get_access_controls {
8552: my ($current_permissions,$group,$file) = @_;
8553: my %access;
8554: my $real_file = $file;
8555: $file =~ s/\.meta$//;
8556: if (defined($file)) {
8557: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8558: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8559: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8560: }
8561: }
8562: } else {
8563: foreach my $key (keys(%{$current_permissions})) {
8564: if ($key =~ /\0accesscontrol$/) {
8565: if (defined($group)) {
8566: if ($key !~ m-^\Q$group\E/-) {
8567: next;
8568: }
8569: }
8570: my ($fullpath) = split(/\0/,$key);
8571: if (ref($$current_permissions{$key}) eq 'HASH') {
8572: foreach my $control (keys(%{$$current_permissions{$key}})) {
8573: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8574: }
8575: }
8576: }
8577: }
8578: }
8579: return %access;
8580: }
8581:
8582: sub modify_access_controls {
8583: my ($file_name,$changes,$domain,$user)=@_;
8584: my ($outcome,$deloutcome);
8585: my %store_permissions;
8586: my %new_values;
8587: my %new_control;
8588: my %translation;
8589: my @deletions = ();
8590: my $now = time;
8591: if (exists($$changes{'activate'})) {
8592: if (ref($$changes{'activate'}) eq 'HASH') {
8593: my @newitems = sort(keys(%{$$changes{'activate'}}));
8594: my $numnew = scalar(@newitems);
8595: for (my $i=0; $i<$numnew; $i++) {
8596: my $newkey = $newitems[$i];
8597: my $newid = &Apache::loncommon::get_cgi_id();
8598: if ($newkey =~ /^\d+:/) {
8599: $newkey =~ s/^(\d+)/$newid/;
8600: $translation{$1} = $newid;
8601: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8602: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8603: $translation{$1} = $newid;
8604: }
8605: $new_values{$file_name."\0".$newkey} =
8606: $$changes{'activate'}{$newitems[$i]};
8607: $new_control{$newkey} = $now;
8608: }
8609: }
8610: }
8611: my %todelete;
8612: my %changed_items;
8613: foreach my $action ('delete','update') {
8614: if (exists($$changes{$action})) {
8615: if (ref($$changes{$action}) eq 'HASH') {
8616: foreach my $key (keys(%{$$changes{$action}})) {
8617: my ($itemnum) = ($key =~ /^([^:]+):/);
8618: if ($action eq 'delete') {
8619: $todelete{$itemnum} = 1;
8620: } else {
8621: $changed_items{$itemnum} = $key;
8622: }
8623: }
8624: }
8625: }
8626: }
8627: # get lock on access controls for file.
8628: my $lockhash = {
8629: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8630: ':'.$env{'user.domain'},
8631: };
8632: my $tries = 0;
8633: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8634:
8635: while (($gotlock ne 'ok') && $tries <3) {
8636: $tries ++;
8637: sleep 1;
8638: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8639: }
8640: if ($gotlock eq 'ok') {
8641: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8642: my ($tmp)=keys(%curr_permissions);
8643: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8644: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8645: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8646: if (ref($curr_controls) eq 'HASH') {
8647: foreach my $control_item (keys(%{$curr_controls})) {
8648: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8649: if (defined($todelete{$itemnum})) {
8650: push(@deletions,$file_name."\0".$control_item);
8651: } else {
8652: if (defined($changed_items{$itemnum})) {
8653: $new_control{$changed_items{$itemnum}} = $now;
8654: push(@deletions,$file_name."\0".$control_item);
8655: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8656: } else {
8657: $new_control{$control_item} = $$curr_controls{$control_item};
8658: }
8659: }
8660: }
8661: }
8662: }
8663: my ($group);
8664: if (&is_course($domain,$user)) {
8665: ($group,my $file) = split(/\//,$file_name,2);
8666: }
8667: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8668: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8669: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8670: # remove lock
8671: my @del_lock = ($file_name."\0".'locked_access_records');
8672: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8673: my $sqlresult =
8674: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8675: $group);
8676: } else {
8677: $outcome = "error: could not obtain lockfile\n";
8678: }
8679: return ($outcome,$deloutcome,\%new_values,\%translation);
8680: }
8681:
8682: sub make_public_indefinitely {
8683: my ($requrl) = @_;
8684: my $now = time;
8685: my $action = 'activate';
8686: my $aclnum = 0;
8687: if (&is_portfolio_url($requrl)) {
8688: my (undef,$udom,$unum,$file_name,$group) =
8689: &parse_portfolio_url($requrl);
8690: my $current_perms = &get_portfile_permissions($udom,$unum);
8691: my %access_controls = &get_access_controls($current_perms,
8692: $group,$file_name);
8693: foreach my $key (keys(%{$access_controls{$file_name}})) {
8694: my ($num,$scope,$end,$start) =
8695: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8696: if ($scope eq 'public') {
8697: if ($start <= $now && $end == 0) {
8698: $action = 'none';
8699: } else {
8700: $action = 'update';
8701: $aclnum = $num;
8702: }
8703: last;
8704: }
8705: }
8706: if ($action eq 'none') {
8707: return 'ok';
8708: } else {
8709: my %changes;
8710: my $newend = 0;
8711: my $newstart = $now;
8712: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8713: $changes{$action}{$newkey} = {
8714: type => 'public',
8715: time => {
8716: start => $newstart,
8717: end => $newend,
8718: },
8719: };
8720: my ($outcome,$deloutcome,$new_values,$translation) =
8721: &modify_access_controls($file_name,\%changes,$udom,$unum);
8722: return $outcome;
8723: }
8724: } else {
8725: return 'invalid';
8726: }
8727: }
8728:
8729: #------------------------------------------------------Get Marked as Read Only
8730:
8731: sub get_marked_as_readonly {
8732: my ($domain,$user,$what,$group) = @_;
8733: my $current_permissions = &get_portfile_permissions($domain,$user);
8734: my @readonly_files;
8735: my $cmp1=$what;
8736: if (ref($what)) { $cmp1=join('',@{$what}) };
8737: while (my ($file_name,$value) = each(%{$current_permissions})) {
8738: if (defined($group)) {
8739: if ($file_name !~ m-^\Q$group\E/-) {
8740: next;
8741: }
8742: }
8743: if (ref($value) eq "ARRAY"){
8744: foreach my $stored_what (@{$value}) {
8745: my $cmp2=$stored_what;
8746: if (ref($stored_what) eq 'ARRAY') {
8747: $cmp2=join('',@{$stored_what});
8748: }
8749: if ($cmp1 eq $cmp2) {
8750: push(@readonly_files, $file_name);
8751: last;
8752: } elsif (!defined($what)) {
8753: push(@readonly_files, $file_name);
8754: last;
8755: }
8756: }
8757: }
8758: }
8759: return @readonly_files;
8760: }
8761: #-----------------------------------------------------------Get Marked as Read Only Hash
8762:
8763: sub get_marked_as_readonly_hash {
8764: my ($current_permissions,$group,$what) = @_;
8765: my %readonly_files;
8766: while (my ($file_name,$value) = each(%{$current_permissions})) {
8767: if (defined($group)) {
8768: if ($file_name !~ m-^\Q$group\E/-) {
8769: next;
8770: }
8771: }
8772: if (ref($value) eq "ARRAY"){
8773: foreach my $stored_what (@{$value}) {
8774: if (ref($stored_what) eq 'ARRAY') {
8775: foreach my $lock_descriptor(@{$stored_what}) {
8776: if ($lock_descriptor eq 'graded') {
8777: $readonly_files{$file_name} = 'graded';
8778: } elsif ($lock_descriptor eq 'handback') {
8779: $readonly_files{$file_name} = 'handback';
8780: } else {
8781: if (!exists($readonly_files{$file_name})) {
8782: $readonly_files{$file_name} = 'locked';
8783: }
8784: }
8785: }
8786: }
8787: }
8788: }
8789: }
8790: return %readonly_files;
8791: }
8792: # ------------------------------------------------------------ Unmark as Read Only
8793:
8794: sub unmark_as_readonly {
8795: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8796: # for portfolio submissions, $what contains [$symb,$crsid]
8797: my ($domain,$user,$what,$file_name,$group) = @_;
8798: $file_name = &declutter_portfile($file_name);
8799: my $symb_crs = $what;
8800: if (ref($what)) { $symb_crs=join('',@$what); }
8801: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
8802: my ($tmp)=keys(%current_permissions);
8803: if ($tmp=~/^error:/) { undef(%current_permissions); }
8804: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
8805: foreach my $file (@readonly_files) {
8806: my $clean_file = &declutter_portfile($file);
8807: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
8808: my $current_locks = $current_permissions{$file};
8809: my @new_locks;
8810: my @del_keys;
8811: if (ref($current_locks) eq "ARRAY"){
8812: foreach my $locker (@{$current_locks}) {
8813: my $compare=$locker;
8814: if (ref($locker) eq 'ARRAY') {
8815: $compare=join('',@{$locker});
8816: if ($compare ne $symb_crs) {
8817: push(@new_locks, $locker);
8818: }
8819: }
8820: }
8821: if (scalar(@new_locks) > 0) {
8822: $current_permissions{$file} = \@new_locks;
8823: } else {
8824: push(@del_keys, $file);
8825: &del('file_permissions',\@del_keys, $domain, $user);
8826: delete($current_permissions{$file});
8827: }
8828: }
8829: }
8830: &put('file_permissions',\%current_permissions,$domain,$user);
8831: return;
8832: }
8833:
8834: # ------------------------------------------------------------ Directory lister
8835:
8836: sub dirlist {
8837: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
8838: $uri=~s/^\///;
8839: $uri=~s/\/$//;
8840: my ($udom, $uname);
8841: if ($getuserdir) {
8842: $udom = $userdomain;
8843: $uname = $username;
8844: } else {
8845: (undef,$udom,$uname)=split(/\//,$uri);
8846: if(defined($userdomain)) {
8847: $udom = $userdomain;
8848: }
8849: if(defined($username)) {
8850: $uname = $username;
8851: }
8852: }
8853: my ($dirRoot,$listing,@listing_results);
8854:
8855: $dirRoot = $perlvar{'lonDocRoot'};
8856: if (defined($getpropath)) {
8857: $dirRoot = &propath($udom,$uname);
8858: $dirRoot =~ s/\/$//;
8859: } elsif (defined($getuserdir)) {
8860: my $subdir=$uname.'__';
8861: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
8862: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8863: ."/$udom/$subdir/$uname";
8864: } elsif (defined($alternateRoot)) {
8865: $dirRoot = $alternateRoot;
8866: }
8867:
8868: if($udom) {
8869: if($uname) {
8870: my $uhome = &homeserver($uname,$udom);
8871: if ($uhome eq 'no_host') {
8872: return ([],'no_host');
8873: }
8874: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8875: .$getuserdir.':'.&escape($dirRoot)
8876: .':'.&escape($uname).':'.&escape($udom),$uhome);
8877: if ($listing eq 'unknown_cmd') {
8878: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
8879: } else {
8880: @listing_results = map { &unescape($_); } split(/:/,$listing);
8881: }
8882: if ($listing eq 'unknown_cmd') {
8883: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
8884: @listing_results = split(/:/,$listing);
8885: } else {
8886: @listing_results = map { &unescape($_); } split(/:/,$listing);
8887: }
8888: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8889: ($listing eq 'rejected') || ($listing eq 'refused') ||
8890: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8891: return ([],$listing);
8892: } else {
8893: return (\@listing_results);
8894: }
8895: } elsif(!$alternateRoot) {
8896: my (%allusers,%listerror);
8897: my %servers = &get_servers($udom,'library');
8898: foreach my $tryserver (keys(%servers)) {
8899: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8900: &escape($udom),$tryserver);
8901: if ($listing eq 'unknown_cmd') {
8902: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8903: $udom, $tryserver);
8904: } else {
8905: @listing_results = map { &unescape($_); } split(/:/,$listing);
8906: }
8907: if ($listing eq 'unknown_cmd') {
8908: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8909: $udom, $tryserver);
8910: @listing_results = split(/:/,$listing);
8911: } else {
8912: @listing_results =
8913: map { &unescape($_); } split(/:/,$listing);
8914: }
8915: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8916: ($listing eq 'rejected') || ($listing eq 'refused') ||
8917: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8918: $listerror{$tryserver} = $listing;
8919: } else {
8920: foreach my $line (@listing_results) {
8921: my ($entry) = split(/&/,$line,2);
8922: $allusers{$entry} = 1;
8923: }
8924: }
8925: }
8926: my @alluserslist=();
8927: foreach my $user (sort(keys(%allusers))) {
8928: push(@alluserslist,$user.'&user');
8929: }
8930: return (\@alluserslist);
8931: } else {
8932: return ([],'missing username');
8933: }
8934: } elsif(!defined($getpropath)) {
8935: my $path = $perlvar{'lonDocRoot'}.'/res/';
8936: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
8937: return (\@all_domains);
8938: } else {
8939: return ([],'missing domain');
8940: }
8941: }
8942:
8943: # --------------------------------------------- GetFileTimestamp
8944: # This function utilizes dirlist and returns the date stamp for
8945: # when it was last modified. It will also return an error of -1
8946: # if an error occurs
8947:
8948: sub GetFileTimestamp {
8949: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
8950: $studentDomain = &LONCAPA::clean_domain($studentDomain);
8951: $studentName = &LONCAPA::clean_username($studentName);
8952: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
8953: undef,$getuserdir);
8954: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8955: return -1;
8956: }
8957: if (ref($fileref) eq 'ARRAY') {
8958: my @stats = split('&',$fileref->[0]);
8959: # @stats contains first the filename, then the stat output
8960: return $stats[10]; # so this is 10 instead of 9.
8961: } else {
8962: return -1;
8963: }
8964: }
8965:
8966: sub stat_file {
8967: my ($uri) = @_;
8968: $uri = &clutter_with_no_wrapper($uri);
8969:
8970: my ($udom,$uname,$file);
8971: if ($uri =~ m-^/(uploaded|editupload)/-) {
8972: ($udom,$uname,$file) =
8973: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
8974: $file = 'userfiles/'.$file;
8975: }
8976: if ($uri =~ m-^/res/-) {
8977: ($udom,$uname) =
8978: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
8979: $file = $uri;
8980: }
8981:
8982: if (!$udom || !$uname || !$file) {
8983: # unable to handle the uri
8984: return ();
8985: }
8986: my $getpropath;
8987: if ($file =~ /^userfiles\//) {
8988: $getpropath = 1;
8989: }
8990: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
8991: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8992: return ();
8993: } else {
8994: if (ref($listref) eq 'ARRAY') {
8995: my @stats = split('&',$listref->[0]);
8996: shift(@stats); #filename is first
8997: return @stats;
8998: }
8999: }
9000: return ();
9001: }
9002:
9003: # -------------------------------------------------------- Value of a Condition
9004:
9005: # gets the value of a specific preevaluated condition
9006: # stored in the string $env{user.state.<cid>}
9007: # or looks up a condition reference in the bighash and if if hasn't
9008: # already been evaluated recurses into docondval to get the value of
9009: # the condition, then memoizing it to
9010: # $env{user.state.<cid>.<condition>}
9011: sub directcondval {
9012: my $number=shift;
9013: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9014: &Apache::lonuserstate::evalstate();
9015: }
9016: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9017: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9018: } elsif ($number =~ /^_/) {
9019: my $sub_condition;
9020: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9021: &GDBM_READER(),0640)) {
9022: $sub_condition=$bighash{'conditions'.$number};
9023: untie(%bighash);
9024: }
9025: my $value = &docondval($sub_condition);
9026: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9027: return $value;
9028: }
9029: if ($env{'user.state.'.$env{'request.course.id'}}) {
9030: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9031: } else {
9032: return 2;
9033: }
9034: }
9035:
9036: # get the collection of conditions for this resource
9037: sub condval {
9038: my $condidx=shift;
9039: my $allpathcond='';
9040: foreach my $cond (split(/\|/,$condidx)) {
9041: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9042: $allpathcond.=
9043: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9044: }
9045: }
9046: $allpathcond=~s/\|$//;
9047: return &docondval($allpathcond);
9048: }
9049:
9050: #evaluates an expression of conditions
9051: sub docondval {
9052: my ($allpathcond) = @_;
9053: my $result=0;
9054: if ($env{'request.course.id'}
9055: && defined($allpathcond)) {
9056: my $operand='|';
9057: my @stack;
9058: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9059: if ($chunk eq '(') {
9060: push @stack,($operand,$result);
9061: } elsif ($chunk eq ')') {
9062: my $before=pop @stack;
9063: if (pop @stack eq '&') {
9064: $result=$result>$before?$before:$result;
9065: } else {
9066: $result=$result>$before?$result:$before;
9067: }
9068: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9069: $operand=$chunk;
9070: } else {
9071: my $new=directcondval($chunk);
9072: if ($operand eq '&') {
9073: $result=$result>$new?$new:$result;
9074: } else {
9075: $result=$result>$new?$result:$new;
9076: }
9077: }
9078: }
9079: }
9080: return $result;
9081: }
9082:
9083: # ---------------------------------------------------- Devalidate courseresdata
9084:
9085: sub devalidatecourseresdata {
9086: my ($coursenum,$coursedomain)=@_;
9087: my $hashid=$coursenum.':'.$coursedomain;
9088: &devalidate_cache_new('courseres',$hashid);
9089: }
9090:
9091:
9092: # --------------------------------------------------- Course Resourcedata Query
9093: #
9094: # Parameters:
9095: # $coursenum - Number of the course.
9096: # $coursedomain - Domain at which the course was created.
9097: # Returns:
9098: # A hash of the course parameters along (I think) with timestamps
9099: # and version info.
9100:
9101: sub get_courseresdata {
9102: my ($coursenum,$coursedomain)=@_;
9103: my $coursehom=&homeserver($coursenum,$coursedomain);
9104: my $hashid=$coursenum.':'.$coursedomain;
9105: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9106: my %dumpreply;
9107: unless (defined($cached)) {
9108: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9109: $result=\%dumpreply;
9110: my ($tmp) = keys(%dumpreply);
9111: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9112: &do_cache_new('courseres',$hashid,$result,600);
9113: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9114: return $tmp;
9115: } elsif ($tmp =~ /^(error)/) {
9116: $result=undef;
9117: &do_cache_new('courseres',$hashid,$result,600);
9118: }
9119: }
9120: return $result;
9121: }
9122:
9123: sub devalidateuserresdata {
9124: my ($uname,$udom)=@_;
9125: my $hashid="$udom:$uname";
9126: &devalidate_cache_new('userres',$hashid);
9127: }
9128:
9129: sub get_userresdata {
9130: my ($uname,$udom)=@_;
9131: #most student don\'t have any data set, check if there is some data
9132: if (&EXT_cache_status($udom,$uname)) { return undef; }
9133:
9134: my $hashid="$udom:$uname";
9135: my ($result,$cached)=&is_cached_new('userres',$hashid);
9136: if (!defined($cached)) {
9137: my %resourcedata=&dump('resourcedata',$udom,$uname);
9138: $result=\%resourcedata;
9139: &do_cache_new('userres',$hashid,$result,600);
9140: }
9141: my ($tmp)=keys(%$result);
9142: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9143: return $result;
9144: }
9145: #error 2 occurs when the .db doesn't exist
9146: if ($tmp!~/error: 2 /) {
9147: &logthis("<font color=\"blue\">WARNING:".
9148: " Trying to get resource data for ".
9149: $uname." at ".$udom.": ".
9150: $tmp."</font>");
9151: } elsif ($tmp=~/error: 2 /) {
9152: #&EXT_cache_set($udom,$uname);
9153: &do_cache_new('userres',$hashid,undef,600);
9154: undef($tmp); # not really an error so don't send it back
9155: }
9156: return $tmp;
9157: }
9158: #----------------------------------------------- resdata - return resource data
9159: # Purpose:
9160: # Return resource data for either users or for a course.
9161: # Parameters:
9162: # $name - Course/user name.
9163: # $domain - Name of the domain the user/course is registered on.
9164: # $type - Type of thing $name is (must be 'course' or 'user'
9165: # @which - Array of names of resources desired.
9166: # Returns:
9167: # The value of the first reasource in @which that is found in the
9168: # resource hash.
9169: # Exceptional Conditions:
9170: # If the $type passed in is not valid (not the string 'course' or
9171: # 'user', an undefined reference is returned.
9172: # If none of the resources are found, an undef is returned
9173: sub resdata {
9174: my ($name,$domain,$type,@which)=@_;
9175: my $result;
9176: if ($type eq 'course') {
9177: $result=&get_courseresdata($name,$domain);
9178: } elsif ($type eq 'user') {
9179: $result=&get_userresdata($name,$domain);
9180: }
9181: if (!ref($result)) { return $result; }
9182: foreach my $item (@which) {
9183: if (defined($result->{$item->[0]})) {
9184: return [$result->{$item->[0]},$item->[1]];
9185: }
9186: }
9187: return undef;
9188: }
9189:
9190: #
9191: # EXT resource caching routines
9192: #
9193:
9194: sub clear_EXT_cache_status {
9195: &delenv('cache.EXT.');
9196: }
9197:
9198: sub EXT_cache_status {
9199: my ($target_domain,$target_user) = @_;
9200: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9201: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9202: # We know already the user has no data
9203: return 1;
9204: } else {
9205: return 0;
9206: }
9207: }
9208:
9209: sub EXT_cache_set {
9210: my ($target_domain,$target_user) = @_;
9211: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9212: #&appenv({$cachename => time});
9213: }
9214:
9215: # --------------------------------------------------------- Value of a Variable
9216: sub EXT {
9217:
9218: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9219: unless ($varname) { return ''; }
9220: #get real user name/domain, courseid and symb
9221: my $courseid;
9222: my $publicuser;
9223: if ($symbparm) {
9224: $symbparm=&get_symb_from_alias($symbparm);
9225: }
9226: if (!($uname && $udom)) {
9227: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9228: if (!$symbparm) { $symbparm=$cursymb; }
9229: } else {
9230: $courseid=$env{'request.course.id'};
9231: }
9232: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9233: my $rest;
9234: if (defined($therest[0])) {
9235: $rest=join('.',@therest);
9236: } else {
9237: $rest='';
9238: }
9239:
9240: my $qualifierrest=$qualifier;
9241: if ($rest) { $qualifierrest.='.'.$rest; }
9242: my $spacequalifierrest=$space;
9243: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9244: if ($realm eq 'user') {
9245: # --------------------------------------------------------------- user.resource
9246: if ($space eq 'resource') {
9247: if ( (defined($Apache::lonhomework::parsing_a_problem)
9248: || defined($Apache::lonhomework::parsing_a_task))
9249: &&
9250: ($symbparm eq &symbread()) ) {
9251: # if we are in the middle of processing the resource the
9252: # get the value we are planning on committing
9253: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9254: return $Apache::lonhomework::results{$qualifierrest};
9255: } else {
9256: return $Apache::lonhomework::history{$qualifierrest};
9257: }
9258: } else {
9259: my %restored;
9260: if ($publicuser || $env{'request.state'} eq 'construct') {
9261: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9262: } else {
9263: %restored=&restore($symbparm,$courseid,$udom,$uname);
9264: }
9265: return $restored{$qualifierrest};
9266: }
9267: # ----------------------------------------------------------------- user.access
9268: } elsif ($space eq 'access') {
9269: # FIXME - not supporting calls for a specific user
9270: return &allowed($qualifier,$rest);
9271: # ------------------------------------------ user.preferences, user.environment
9272: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9273: if (($uname eq $env{'user.name'}) &&
9274: ($udom eq $env{'user.domain'})) {
9275: return $env{join('.',('environment',$qualifierrest))};
9276: } else {
9277: my %returnhash;
9278: if (!$publicuser) {
9279: %returnhash=&userenvironment($udom,$uname,
9280: $qualifierrest);
9281: }
9282: return $returnhash{$qualifierrest};
9283: }
9284: # ----------------------------------------------------------------- user.course
9285: } elsif ($space eq 'course') {
9286: # FIXME - not supporting calls for a specific user
9287: return $env{join('.',('request.course',$qualifier))};
9288: # ------------------------------------------------------------------- user.role
9289: } elsif ($space eq 'role') {
9290: # FIXME - not supporting calls for a specific user
9291: my ($role,$where)=split(/\./,$env{'request.role'});
9292: if ($qualifier eq 'value') {
9293: return $role;
9294: } elsif ($qualifier eq 'extent') {
9295: return $where;
9296: }
9297: # ----------------------------------------------------------------- user.domain
9298: } elsif ($space eq 'domain') {
9299: return $udom;
9300: # ------------------------------------------------------------------- user.name
9301: } elsif ($space eq 'name') {
9302: return $uname;
9303: # ---------------------------------------------------- Any other user namespace
9304: } else {
9305: my %reply;
9306: if (!$publicuser) {
9307: %reply=&get($space,[$qualifierrest],$udom,$uname);
9308: }
9309: return $reply{$qualifierrest};
9310: }
9311: } elsif ($realm eq 'query') {
9312: # ---------------------------------------------- pull stuff out of query string
9313: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9314: [$spacequalifierrest]);
9315: return $env{'form.'.$spacequalifierrest};
9316: } elsif ($realm eq 'request') {
9317: # ------------------------------------------------------------- request.browser
9318: if ($space eq 'browser') {
9319: return $env{'browser.'.$qualifier};
9320: # ------------------------------------------------------------ request.filename
9321: } else {
9322: return $env{'request.'.$spacequalifierrest};
9323: }
9324: } elsif ($realm eq 'course') {
9325: # ---------------------------------------------------------- course.description
9326: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9327: } elsif ($realm eq 'resource') {
9328:
9329: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9330: if (!$symbparm) { $symbparm=&symbread(); }
9331: }
9332:
9333: if ($space eq 'title') {
9334: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9335: return &gettitle($symbparm);
9336: }
9337:
9338: if ($space eq 'map') {
9339: my ($map) = &decode_symb($symbparm);
9340: return &symbread($map);
9341: }
9342: if ($space eq 'filename') {
9343: if ($symbparm) {
9344: return &clutter((&decode_symb($symbparm))[2]);
9345: }
9346: return &hreflocation('',$env{'request.filename'});
9347: }
9348:
9349: my ($section, $group, @groups);
9350: my ($courselevelm,$courselevel);
9351: if ($symbparm && defined($courseid) &&
9352: $courseid eq $env{'request.course.id'}) {
9353:
9354: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9355:
9356: # ----------------------------------------------------- Cascading lookup scheme
9357: my $symbp=$symbparm;
9358: my $mapp=&deversion((&decode_symb($symbp))[0]);
9359:
9360: my $symbparm=$symbp.'.'.$spacequalifierrest;
9361: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9362:
9363: if (($env{'user.name'} eq $uname) &&
9364: ($env{'user.domain'} eq $udom)) {
9365: $section=$env{'request.course.sec'};
9366: @groups = split(/:/,$env{'request.course.groups'});
9367: @groups=&sort_course_groups($courseid,@groups);
9368: } else {
9369: if (! defined($usection)) {
9370: $section=&getsection($udom,$uname,$courseid);
9371: } else {
9372: $section = $usection;
9373: }
9374: @groups = &get_users_groups($udom,$uname,$courseid);
9375: }
9376:
9377: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9378: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9379: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9380:
9381: $courselevel=$courseid.'.'.$spacequalifierrest;
9382: my $courselevelr=$courseid.'.'.$symbparm;
9383: $courselevelm=$courseid.'.'.$mapparm;
9384:
9385: # ----------------------------------------------------------- first, check user
9386:
9387: my $userreply=&resdata($uname,$udom,'user',
9388: ([$courselevelr,'resource'],
9389: [$courselevelm,'map' ],
9390: [$courselevel, 'course' ]));
9391: if (defined($userreply)) { return &get_reply($userreply); }
9392:
9393: # ------------------------------------------------ second, check some of course
9394: my $coursereply;
9395: if (@groups > 0) {
9396: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9397: $mapparm,$spacequalifierrest);
9398: if (defined($coursereply)) { return &get_reply($coursereply); }
9399: }
9400:
9401: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9402: $env{'course.'.$courseid.'.domain'},
9403: 'course',
9404: ([$seclevelr, 'resource'],
9405: [$seclevelm, 'map' ],
9406: [$seclevel, 'course' ],
9407: [$courselevelr,'resource']));
9408: if (defined($coursereply)) { return &get_reply($coursereply); }
9409:
9410: # ------------------------------------------------------ third, check map parms
9411: my %parmhash=();
9412: my $thisparm='';
9413: if (tie(%parmhash,'GDBM_File',
9414: $env{'request.course.fn'}.'_parms.db',
9415: &GDBM_READER(),0640)) {
9416: $thisparm=$parmhash{$symbparm};
9417: untie(%parmhash);
9418: }
9419: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9420: }
9421: # ------------------------------------------ fourth, look in resource metadata
9422:
9423: $spacequalifierrest=~s/\./\_/;
9424: my $filename;
9425: if (!$symbparm) { $symbparm=&symbread(); }
9426: if ($symbparm) {
9427: $filename=(&decode_symb($symbparm))[2];
9428: } else {
9429: $filename=$env{'request.filename'};
9430: }
9431: my $metadata=&metadata($filename,$spacequalifierrest);
9432: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9433: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9434: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9435:
9436: # ---------------------------------------------- fourth, look in rest of course
9437: if ($symbparm && defined($courseid) &&
9438: $courseid eq $env{'request.course.id'}) {
9439: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9440: $env{'course.'.$courseid.'.domain'},
9441: 'course',
9442: ([$courselevelm,'map' ],
9443: [$courselevel, 'course']));
9444: if (defined($coursereply)) { return &get_reply($coursereply); }
9445: }
9446: # ------------------------------------------------------------------ Cascade up
9447: unless ($space eq '0') {
9448: my @parts=split(/_/,$space);
9449: my $id=pop(@parts);
9450: my $part=join('_',@parts);
9451: if ($part eq '') { $part='0'; }
9452: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9453: $symbparm,$udom,$uname,$section,1);
9454: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9455: }
9456: if ($recurse) { return undef; }
9457: my $pack_def=&packages_tab_default($filename,$varname);
9458: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9459: # ---------------------------------------------------- Any other user namespace
9460: } elsif ($realm eq 'environment') {
9461: # ----------------------------------------------------------------- environment
9462: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9463: return $env{'environment.'.$spacequalifierrest};
9464: } else {
9465: if ($uname eq 'anonymous' && $udom eq '') {
9466: return '';
9467: }
9468: my %returnhash=&userenvironment($udom,$uname,
9469: $spacequalifierrest);
9470: return $returnhash{$spacequalifierrest};
9471: }
9472: } elsif ($realm eq 'system') {
9473: # ----------------------------------------------------------------- system.time
9474: if ($space eq 'time') {
9475: return time;
9476: }
9477: } elsif ($realm eq 'server') {
9478: # ----------------------------------------------------------------- system.time
9479: if ($space eq 'name') {
9480: return $ENV{'SERVER_NAME'};
9481: }
9482: }
9483: return '';
9484: }
9485:
9486: sub get_reply {
9487: my ($reply_value) = @_;
9488: if (ref($reply_value) eq 'ARRAY') {
9489: if (wantarray) {
9490: return @$reply_value;
9491: }
9492: return $reply_value->[0];
9493: } else {
9494: return $reply_value;
9495: }
9496: }
9497:
9498: sub check_group_parms {
9499: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9500: my @groupitems = ();
9501: my $resultitem;
9502: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9503: foreach my $group (@{$groups}) {
9504: foreach my $level (@levels) {
9505: my $item = $courseid.'.['.$group.'].'.$level->[0];
9506: push(@groupitems,[$item,$level->[1]]);
9507: }
9508: }
9509: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9510: $env{'course.'.$courseid.'.domain'},
9511: 'course',@groupitems);
9512: return $coursereply;
9513: }
9514:
9515: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9516: my ($courseid,@groups) = @_;
9517: @groups = sort(@groups);
9518: return @groups;
9519: }
9520:
9521: sub packages_tab_default {
9522: my ($uri,$varname)=@_;
9523: my (undef,$part,$name)=split(/\./,$varname);
9524:
9525: my (@extension,@specifics,$do_default);
9526: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9527: my ($pack_type,$pack_part)=split(/_/,$package,2);
9528: if ($pack_type eq 'default') {
9529: $do_default=1;
9530: } elsif ($pack_type eq 'extension') {
9531: push(@extension,[$package,$pack_type,$pack_part]);
9532: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9533: # only look at packages defaults for packages that this id is
9534: push(@specifics,[$package,$pack_type,$pack_part]);
9535: }
9536: }
9537: # first look for a package that matches the requested part id
9538: foreach my $package (@specifics) {
9539: my (undef,$pack_type,$pack_part)=@{$package};
9540: next if ($pack_part ne $part);
9541: if (defined($packagetab{"$pack_type&$name&default"})) {
9542: return $packagetab{"$pack_type&$name&default"};
9543: }
9544: }
9545: # look for any possible matching non extension_ package
9546: foreach my $package (@specifics) {
9547: my (undef,$pack_type,$pack_part)=@{$package};
9548: if (defined($packagetab{"$pack_type&$name&default"})) {
9549: return $packagetab{"$pack_type&$name&default"};
9550: }
9551: if ($pack_type eq 'part') { $pack_part='0'; }
9552: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9553: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9554: }
9555: }
9556: # look for any posible extension_ match
9557: foreach my $package (@extension) {
9558: my ($package,$pack_type)=@{$package};
9559: if (defined($packagetab{"$pack_type&$name&default"})) {
9560: return $packagetab{"$pack_type&$name&default"};
9561: }
9562: if (defined($packagetab{$package."&$name&default"})) {
9563: return $packagetab{$package."&$name&default"};
9564: }
9565: }
9566: # look for a global default setting
9567: if ($do_default && defined($packagetab{"default&$name&default"})) {
9568: return $packagetab{"default&$name&default"};
9569: }
9570: return undef;
9571: }
9572:
9573: sub add_prefix_and_part {
9574: my ($prefix,$part)=@_;
9575: my $keyroot;
9576: if (defined($prefix) && $prefix !~ /^__/) {
9577: # prefix that has a part already
9578: $keyroot=$prefix;
9579: } elsif (defined($prefix)) {
9580: # prefix that is missing a part
9581: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9582: } else {
9583: # no prefix at all
9584: if (defined($part)) { $keyroot='_'.$part; }
9585: }
9586: return $keyroot;
9587: }
9588:
9589: # ---------------------------------------------------------------- Get metadata
9590:
9591: my %metaentry;
9592: my %importedpartids;
9593: sub metadata {
9594: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9595: $uri=&declutter($uri);
9596: # if it is a non metadata possible uri return quickly
9597: if (($uri eq '') ||
9598: (($uri =~ m|^/*adm/|) &&
9599: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9600: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9601: return undef;
9602: }
9603: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9604: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9605: return undef;
9606: }
9607: my $filename=$uri;
9608: $uri=~s/\.meta$//;
9609: #
9610: # Is the metadata already cached?
9611: # Look at timestamp of caching
9612: # Everything is cached by the main uri, libraries are never directly cached
9613: #
9614: if (!defined($liburi)) {
9615: my ($result,$cached)=&is_cached_new('meta',$uri);
9616: if (defined($cached)) { return $result->{':'.$what}; }
9617: }
9618: {
9619: # Imported parts would go here
9620: my %importedids=();
9621: my @origfileimportpartids=();
9622: my $importedparts=0;
9623: #
9624: # Is this a recursive call for a library?
9625: #
9626: # if (! exists($metacache{$uri})) {
9627: # $metacache{$uri}={};
9628: # }
9629: my $cachetime = 60*60;
9630: if ($liburi) {
9631: $liburi=&declutter($liburi);
9632: $filename=$liburi;
9633: } else {
9634: &devalidate_cache_new('meta',$uri);
9635: undef(%metaentry);
9636: }
9637: my %metathesekeys=();
9638: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9639: my $metastring;
9640: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9641: my $which = &hreflocation('','/'.($liburi || $uri));
9642: $metastring =
9643: &Apache::lonnet::ssi_body($which,
9644: ('grade_target' => 'meta'));
9645: $cachetime = 1; # only want this cached in the child not long term
9646: } elsif (($uri !~ m -^(editupload)/-) &&
9647: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9648: my $file=&filelocation('',&clutter($filename));
9649: #push(@{$metaentry{$uri.'.file'}},$file);
9650: $metastring=&getfile($file);
9651: }
9652: my $parser=HTML::LCParser->new(\$metastring);
9653: my $token;
9654: undef %metathesekeys;
9655: while ($token=$parser->get_token) {
9656: if ($token->[0] eq 'S') {
9657: if (defined($token->[2]->{'package'})) {
9658: #
9659: # This is a package - get package info
9660: #
9661: my $package=$token->[2]->{'package'};
9662: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9663: if (defined($token->[2]->{'id'})) {
9664: $keyroot.='_'.$token->[2]->{'id'};
9665: }
9666: if ($metaentry{':packages'}) {
9667: $metaentry{':packages'}.=','.$package.$keyroot;
9668: } else {
9669: $metaentry{':packages'}=$package.$keyroot;
9670: }
9671: foreach my $pack_entry (keys(%packagetab)) {
9672: my $part=$keyroot;
9673: $part=~s/^\_//;
9674: if ($pack_entry=~/^\Q$package\E\&/ ||
9675: $pack_entry=~/^\Q$package\E_0\&/) {
9676: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9677: # ignore package.tab specified default values
9678: # here &package_tab_default() will fetch those
9679: if ($subp eq 'default') { next; }
9680: my $value=$packagetab{$pack_entry};
9681: my $unikey;
9682: if ($pack =~ /_0$/) {
9683: $unikey='parameter_0_'.$name;
9684: $part=0;
9685: } else {
9686: $unikey='parameter'.$keyroot.'_'.$name;
9687: }
9688: if ($subp eq 'display') {
9689: $value.=' [Part: '.$part.']';
9690: }
9691: $metaentry{':'.$unikey.'.part'}=$part;
9692: $metathesekeys{$unikey}=1;
9693: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9694: $metaentry{':'.$unikey.'.'.$subp}=$value;
9695: }
9696: if (defined($metaentry{':'.$unikey.'.default'})) {
9697: $metaentry{':'.$unikey}=
9698: $metaentry{':'.$unikey.'.default'};
9699: }
9700: }
9701: }
9702: } else {
9703: #
9704: # This is not a package - some other kind of start tag
9705: #
9706: my $entry=$token->[1];
9707: my $unikey='';
9708:
9709: if ($entry eq 'import') {
9710: #
9711: # Importing a library here
9712: #
9713: my $location=$parser->get_text('/import');
9714: my $dir=$filename;
9715: $dir=~s|[^/]*$||;
9716: $location=&filelocation($dir,$location);
9717:
9718: my $importmode=$token->[2]->{'importmode'};
9719: if ($importmode eq 'problem') {
9720: # Import as problem/response
9721: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9722: } elsif ($importmode eq 'part') {
9723: # Import as part(s)
9724: $importedparts=1;
9725: # We need to get the original file and the imported file to get the part order correct
9726: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9727: # Load and inspect original file
9728: if ($#origfileimportpartids<0) {
9729: undef(%importedpartids);
9730: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9731: my $origfile=&getfile($origfilelocation);
9732: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9733: }
9734:
9735: # Load and inspect imported file
9736: my $impfile=&getfile($location);
9737: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9738: if ($#impfilepartids>=0) {
9739: # This problem had parts
9740: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9741: } else {
9742: # Importing by turning a single problem into a problem part
9743: # It gets the import-tags ID as part-ID
9744: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9745: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9746: }
9747: } else {
9748: # Normal import
9749: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9750: if (defined($token->[2]->{'id'})) {
9751: $unikey.='_'.$token->[2]->{'id'};
9752: }
9753: }
9754:
9755: if ($depthcount<20) {
9756: my $metadata =
9757: &metadata($uri,'keys', $location,$unikey,
9758: $depthcount+1);
9759: foreach my $meta (split(',',$metadata)) {
9760: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9761: $metathesekeys{$meta}=1;
9762: }
9763:
9764: }
9765: } else {
9766: #
9767: # Not importing, some other kind of non-package, non-library start tag
9768: #
9769: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9770: if (defined($token->[2]->{'id'})) {
9771: $unikey.='_'.$token->[2]->{'id'};
9772: }
9773: if (defined($token->[2]->{'name'})) {
9774: $unikey.='_'.$token->[2]->{'name'};
9775: }
9776: $metathesekeys{$unikey}=1;
9777: foreach my $param (@{$token->[3]}) {
9778: $metaentry{':'.$unikey.'.'.$param} =
9779: $token->[2]->{$param};
9780: }
9781: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9782: my $default=$metaentry{':'.$unikey.'.default'};
9783: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9784: # only ws inside the tag, and not in default, so use default
9785: # as value
9786: $metaentry{':'.$unikey}=$default;
9787: } elsif ( $internaltext =~ /\S/ ) {
9788: # something interesting inside the tag
9789: $metaentry{':'.$unikey}=$internaltext;
9790: } else {
9791: # no interesting values, don't set a default
9792: }
9793: # end of not-a-package not-a-library import
9794: }
9795: # end of not-a-package start tag
9796: }
9797: # the next is the end of "start tag"
9798: }
9799: }
9800: my ($extension) = ($uri =~ /\.(\w+)$/);
9801: $extension = lc($extension);
9802: if ($extension eq 'htm') { $extension='html'; }
9803:
9804: foreach my $key (keys(%packagetab)) {
9805: #no specific packages #how's our extension
9806: if ($key!~/^extension_\Q$extension\E&/) { next; }
9807: &metadata_create_package_def($uri,$key,'extension_'.$extension,
9808: \%metathesekeys);
9809: }
9810:
9811: if (!exists($metaentry{':packages'})
9812: || $packagetab{"import_defaults&extension_$extension"}) {
9813: foreach my $key (keys(%packagetab)) {
9814: #no specific packages well let's get default then
9815: if ($key!~/^default&/) { next; }
9816: &metadata_create_package_def($uri,$key,'default',
9817: \%metathesekeys);
9818: }
9819: }
9820: # are there custom rights to evaluate
9821: if ($metaentry{':copyright'} eq 'custom') {
9822:
9823: #
9824: # Importing a rights file here
9825: #
9826: unless ($depthcount) {
9827: my $location=$metaentry{':customdistributionfile'};
9828: my $dir=$filename;
9829: $dir=~s|[^/]*$||;
9830: $location=&filelocation($dir,$location);
9831: my $rights_metadata =
9832: &metadata($uri,'keys',$location,'_rights',
9833: $depthcount+1);
9834: foreach my $rights (split(',',$rights_metadata)) {
9835: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
9836: $metathesekeys{$rights}=1;
9837: }
9838: }
9839: }
9840: # uniqifiy package listing
9841: my %seen;
9842: my @uniq_packages =
9843: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
9844: $metaentry{':packages'} = join(',',@uniq_packages);
9845:
9846: if ($importedparts) {
9847: # We had imported parts and need to rebuild partorder
9848: $metaentry{':partorder'}='';
9849: $metathesekeys{'partorder'}=1;
9850: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
9851: if ($origfileimportpartids[$index] eq 'part') {
9852: # original part, part of the problem
9853: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
9854: } else {
9855: # we have imported parts at this position
9856: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
9857: }
9858: }
9859: $metaentry{':partorder'}=~s/^\,//;
9860: }
9861:
9862: $metaentry{':keys'} = join(',',keys(%metathesekeys));
9863: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
9864: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
9865: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9866: # this is the end of "was not already recently cached
9867: }
9868: return $metaentry{':'.$what};
9869: }
9870:
9871: sub metadata_create_package_def {
9872: my ($uri,$key,$package,$metathesekeys)=@_;
9873: my ($pack,$name,$subp)=split(/\&/,$key);
9874: if ($subp eq 'default') { next; }
9875:
9876: if (defined($metaentry{':packages'})) {
9877: $metaentry{':packages'}.=','.$package;
9878: } else {
9879: $metaentry{':packages'}=$package;
9880: }
9881: my $value=$packagetab{$key};
9882: my $unikey;
9883: $unikey='parameter_0_'.$name;
9884: $metaentry{':'.$unikey.'.part'}=0;
9885: $$metathesekeys{$unikey}=1;
9886: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9887: $metaentry{':'.$unikey.'.'.$subp}=$value;
9888: }
9889: if (defined($metaentry{':'.$unikey.'.default'})) {
9890: $metaentry{':'.$unikey}=
9891: $metaentry{':'.$unikey.'.default'};
9892: }
9893: }
9894:
9895: sub metadata_generate_part0 {
9896: my ($metadata,$metacache,$uri) = @_;
9897: my %allnames;
9898: foreach my $metakey (keys(%$metadata)) {
9899: if ($metakey=~/^parameter\_(.*)/) {
9900: my $part=$$metacache{':'.$metakey.'.part'};
9901: my $name=$$metacache{':'.$metakey.'.name'};
9902: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9903: $allnames{$name}=$part;
9904: }
9905: }
9906: }
9907: foreach my $name (keys(%allnames)) {
9908: $$metadata{"parameter_0_$name"}=1;
9909: my $key=":parameter_0_$name";
9910: $$metacache{"$key.part"}='0';
9911: $$metacache{"$key.name"}=$name;
9912: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9913: $allnames{$name}.'_'.$name.
9914: '.type'};
9915: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9916: '.display'};
9917: my $expr='[Part: '.$allnames{$name}.']';
9918: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9919: $$metacache{"$key.display"}=$olddis;
9920: }
9921: }
9922:
9923: # ------------------------------------------------------ Devalidate title cache
9924:
9925: sub devalidate_title_cache {
9926: my ($url)=@_;
9927: if (!$env{'request.course.id'}) { return; }
9928: my $symb=&symbread($url);
9929: if (!$symb) { return; }
9930: my $key=$env{'request.course.id'}."\0".$symb;
9931: &devalidate_cache_new('title',$key);
9932: }
9933:
9934: # ------------------------------------------------- Get the title of a course
9935:
9936: sub current_course_title {
9937: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
9938: }
9939: # ------------------------------------------------- Get the title of a resource
9940:
9941: sub gettitle {
9942: my $urlsymb=shift;
9943: my $symb=&symbread($urlsymb);
9944: if ($symb) {
9945: my $key=$env{'request.course.id'}."\0".$symb;
9946: my ($result,$cached)=&is_cached_new('title',$key);
9947: if (defined($cached)) {
9948: return $result;
9949: }
9950: my ($map,$resid,$url)=&decode_symb($symb);
9951: my $title='';
9952: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
9953: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
9954: } else {
9955: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9956: &GDBM_READER(),0640)) {
9957: my $mapid=$bighash{'map_pc_'.&clutter($map)};
9958: $title=$bighash{'title_'.$mapid.'.'.$resid};
9959: untie(%bighash);
9960: }
9961: }
9962: $title=~s/\&colon\;/\:/gs;
9963: if ($title) {
9964: # Remember both $symb and $title for dynamic metadata
9965: $accesshash{$symb.'___crstitle'}=$title;
9966: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
9967: # Cache this title and then return it
9968: return &do_cache_new('title',$key,$title,600);
9969: }
9970: $urlsymb=$url;
9971: }
9972: my $title=&metadata($urlsymb,'title');
9973: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
9974: return $title;
9975: }
9976:
9977: sub get_slot {
9978: my ($which,$cnum,$cdom)=@_;
9979: if (!$cnum || !$cdom) {
9980: (undef,my $courseid)=&whichuser();
9981: $cdom=$env{'course.'.$courseid.'.domain'};
9982: $cnum=$env{'course.'.$courseid.'.num'};
9983: }
9984: my $key=join("\0",'slots',$cdom,$cnum,$which);
9985: my %slotinfo;
9986: if (exists($remembered{$key})) {
9987: $slotinfo{$which} = $remembered{$key};
9988: } else {
9989: %slotinfo=&get('slots',[$which],$cdom,$cnum);
9990: &Apache::lonhomework::showhash(%slotinfo);
9991: my ($tmp)=keys(%slotinfo);
9992: if ($tmp=~/^error:/) { return (); }
9993: $remembered{$key} = $slotinfo{$which};
9994: }
9995: if (ref($slotinfo{$which}) eq 'HASH') {
9996: return %{$slotinfo{$which}};
9997: }
9998: return $slotinfo{$which};
9999: }
10000:
10001: sub get_reservable_slots {
10002: my ($cnum,$cdom,$uname,$udom) = @_;
10003: my $now = time;
10004: my $reservable_info;
10005: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10006: if (exists($remembered{$key})) {
10007: $reservable_info = $remembered{$key};
10008: } else {
10009: my %resv;
10010: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10011: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10012: $reservable_info = \%resv;
10013: $remembered{$key} = $reservable_info;
10014: }
10015: return $reservable_info;
10016: }
10017:
10018: sub get_course_slots {
10019: my ($cnum,$cdom) = @_;
10020: my $hashid=$cnum.':'.$cdom;
10021: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10022: if (defined($cached)) {
10023: if (ref($result) eq 'HASH') {
10024: return %{$result};
10025: }
10026: } else {
10027: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10028: my ($tmp) = keys(%slots);
10029: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10030: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
10031: return %slots;
10032: }
10033: }
10034: return;
10035: }
10036:
10037: sub devalidate_slots_cache {
10038: my ($cnum,$cdom)=@_;
10039: my $hashid=$cnum.':'.$cdom;
10040: &devalidate_cache_new('allslots',$hashid);
10041: }
10042:
10043: sub get_coursechange {
10044: my ($cdom,$cnum) = @_;
10045: if ($cdom eq '' || $cnum eq '') {
10046: return unless ($env{'request.course.id'});
10047: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10048: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10049: }
10050: my $hashid=$cdom.'_'.$cnum;
10051: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10052: if ((defined($cached)) && ($change ne '')) {
10053: return $change;
10054: } else {
10055: my %crshash;
10056: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10057: if ($crshash{'internal.contentchange'} eq '') {
10058: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10059: if ($change eq '') {
10060: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10061: $change = $crshash{'internal.created'};
10062: }
10063: } else {
10064: $change = $crshash{'internal.contentchange'};
10065: }
10066: my $cachetime = 600;
10067: &do_cache_new('crschange',$hashid,$change,$cachetime);
10068: }
10069: return $change;
10070: }
10071:
10072: sub devalidate_coursechange_cache {
10073: my ($cnum,$cdom)=@_;
10074: my $hashid=$cnum.':'.$cdom;
10075: &devalidate_cache_new('crschange',$hashid);
10076: }
10077:
10078: # ------------------------------------------------- Update symbolic store links
10079:
10080: sub symblist {
10081: my ($mapname,%newhash)=@_;
10082: $mapname=&deversion(&declutter($mapname));
10083: my %hash;
10084: if (($env{'request.course.fn'}) && (%newhash)) {
10085: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10086: &GDBM_WRCREAT(),0640)) {
10087: foreach my $url (keys(%newhash)) {
10088: next if ($url eq 'last_known'
10089: && $env{'form.no_update_last_known'});
10090: $hash{declutter($url)}=&encode_symb($mapname,
10091: $newhash{$url}->[1],
10092: $newhash{$url}->[0]);
10093: }
10094: if (untie(%hash)) {
10095: return 'ok';
10096: }
10097: }
10098: }
10099: return 'error';
10100: }
10101:
10102: # --------------------------------------------------------------- Verify a symb
10103:
10104: sub symbverify {
10105: my ($symb,$thisurl,$encstate)=@_;
10106: my $thisfn=$thisurl;
10107: $thisfn=&declutter($thisfn);
10108: # direct jump to resource in page or to a sequence - will construct own symbs
10109: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10110: # check URL part
10111: my ($map,$resid,$url)=&decode_symb($symb);
10112:
10113: unless ($url eq $thisfn) { return 0; }
10114:
10115: $symb=&symbclean($symb);
10116: $thisurl=&deversion($thisurl);
10117: $thisfn=&deversion($thisfn);
10118:
10119: my %bighash;
10120: my $okay=0;
10121:
10122: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10123: &GDBM_READER(),0640)) {
10124: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10125: $thisurl =~ s/\?.+$//;
10126: }
10127: my $ids=$bighash{'ids_'.&clutter($thisurl)};
10128: unless ($ids) {
10129: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10130: $ids=$bighash{$idkey};
10131: }
10132: if ($ids) {
10133: # ------------------------------------------------------------------- Has ID(s)
10134: foreach my $id (split(/\,/,$ids)) {
10135: my ($mapid,$resid)=split(/\./,$id);
10136: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10137: $symb =~ s/\?.+$//;
10138: }
10139: if (
10140: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10141: eq $symb) {
10142: if (ref($encstate)) {
10143: $$encstate = $bighash{'encrypted_'.$id};
10144: }
10145: if (($env{'request.role.adv'}) ||
10146: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10147: ($thisurl eq '/adm/navmaps')) {
10148: $okay=1;
10149: }
10150: }
10151: }
10152: }
10153: untie(%bighash);
10154: }
10155: return $okay;
10156: }
10157:
10158: # --------------------------------------------------------------- Clean-up symb
10159:
10160: sub symbclean {
10161: my $symb=shift;
10162: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10163: # remove version from map
10164: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10165:
10166: # remove version from URL
10167: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10168:
10169: # remove wrapper
10170:
10171: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10172: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10173: return $symb;
10174: }
10175:
10176: # ---------------------------------------------- Split symb to find map and url
10177:
10178: sub encode_symb {
10179: my ($map,$resid,$url)=@_;
10180: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10181: }
10182:
10183: sub decode_symb {
10184: my $symb=shift;
10185: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10186: my ($map,$resid,$url)=split(/___/,$symb);
10187: return (&fixversion($map),$resid,&fixversion($url));
10188: }
10189:
10190: sub fixversion {
10191: my $fn=shift;
10192: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10193: my %bighash;
10194: my $uri=&clutter($fn);
10195: my $key=$env{'request.course.id'}.'_'.$uri;
10196: # is this cached?
10197: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10198: if (defined($cached)) { return $result; }
10199: # unfortunately not cached, or expired
10200: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10201: &GDBM_READER(),0640)) {
10202: if ($bighash{'version_'.$uri}) {
10203: my $version=$bighash{'version_'.$uri};
10204: unless (($version eq 'mostrecent') ||
10205: ($version==&getversion($uri))) {
10206: $uri=~s/\.(\w+)$/\.$version\.$1/;
10207: }
10208: }
10209: untie %bighash;
10210: }
10211: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10212: }
10213:
10214: sub deversion {
10215: my $url=shift;
10216: $url=~s/\.\d+\.(\w+)$/\.$1/;
10217: return $url;
10218: }
10219:
10220: # ------------------------------------------------------ Return symb list entry
10221:
10222: sub symbread {
10223: my ($thisfn,$donotrecurse)=@_;
10224: my $cache_str='request.symbread.cached.'.$thisfn;
10225: if (defined($env{$cache_str})) {
10226: if (($thisfn) || ($env{$cache_str} ne '')) {
10227: return $env{$cache_str};
10228: }
10229: }
10230: # no filename provided? try from environment
10231: unless ($thisfn) {
10232: if ($env{'request.symb'}) {
10233: return $env{$cache_str}=&symbclean($env{'request.symb'});
10234: }
10235: $thisfn=$env{'request.filename'};
10236: }
10237: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10238: # is that filename actually a symb? Verify, clean, and return
10239: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10240: if (&symbverify($thisfn,$1)) {
10241: return $env{$cache_str}=&symbclean($thisfn);
10242: }
10243: }
10244: $thisfn=declutter($thisfn);
10245: my %hash;
10246: my %bighash;
10247: my $syval='';
10248: if (($env{'request.course.fn'}) && ($thisfn)) {
10249: my $targetfn = $thisfn;
10250: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10251: $targetfn = 'adm/wrapper/'.$thisfn;
10252: }
10253: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10254: $targetfn=$1;
10255: }
10256: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10257: &GDBM_READER(),0640)) {
10258: $syval=$hash{$targetfn};
10259: untie(%hash);
10260: }
10261: # ---------------------------------------------------------- There was an entry
10262: if ($syval) {
10263: #unless ($syval=~/\_\d+$/) {
10264: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10265: #&appenv({'request.ambiguous' => $thisfn});
10266: #return $env{$cache_str}='';
10267: #}
10268: #$syval.=$1;
10269: #}
10270: } else {
10271: # ------------------------------------------------------- Was not in symb table
10272: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10273: &GDBM_READER(),0640)) {
10274: # ---------------------------------------------- Get ID(s) for current resource
10275: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10276: unless ($ids) {
10277: $ids=$bighash{'ids_/'.$thisfn};
10278: }
10279: unless ($ids) {
10280: # alias?
10281: $ids=$bighash{'mapalias_'.$thisfn};
10282: }
10283: if ($ids) {
10284: # ------------------------------------------------------------------- Has ID(s)
10285: my @possibilities=split(/\,/,$ids);
10286: if ($#possibilities==0) {
10287: # ----------------------------------------------- There is only one possibility
10288: my ($mapid,$resid)=split(/\./,$ids);
10289: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10290: $resid,$thisfn);
10291: } elsif (!$donotrecurse) {
10292: # ------------------------------------------ There is more than one possibility
10293: my $realpossible=0;
10294: foreach my $id (@possibilities) {
10295: my $file=$bighash{'src_'.$id};
10296: if (&allowed('bre',$file)) {
10297: my ($mapid,$resid)=split(/\./,$id);
10298: if ($bighash{'map_type_'.$mapid} ne 'page') {
10299: $realpossible++;
10300: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10301: $resid,$thisfn);
10302: }
10303: }
10304: }
10305: if ($realpossible!=1) { $syval=''; }
10306: } else {
10307: $syval='';
10308: }
10309: }
10310: untie(%bighash)
10311: }
10312: }
10313: if ($syval) {
10314: return $env{$cache_str}=$syval;
10315: }
10316: }
10317: &appenv({'request.ambiguous' => $thisfn});
10318: return $env{$cache_str}='';
10319: }
10320:
10321: # ---------------------------------------------------------- Return random seed
10322:
10323: sub numval {
10324: my $txt=shift;
10325: $txt=~tr/A-J/0-9/;
10326: $txt=~tr/a-j/0-9/;
10327: $txt=~tr/K-T/0-9/;
10328: $txt=~tr/k-t/0-9/;
10329: $txt=~tr/U-Z/0-5/;
10330: $txt=~tr/u-z/0-5/;
10331: $txt=~s/\D//g;
10332: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10333: return int($txt);
10334: }
10335:
10336: sub numval2 {
10337: my $txt=shift;
10338: $txt=~tr/A-J/0-9/;
10339: $txt=~tr/a-j/0-9/;
10340: $txt=~tr/K-T/0-9/;
10341: $txt=~tr/k-t/0-9/;
10342: $txt=~tr/U-Z/0-5/;
10343: $txt=~tr/u-z/0-5/;
10344: $txt=~s/\D//g;
10345: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10346: my $total;
10347: foreach my $val (@txts) { $total+=$val; }
10348: if ($_64bit) { if ($total > 2**32) { return -1; } }
10349: return int($total);
10350: }
10351:
10352: sub numval3 {
10353: use integer;
10354: my $txt=shift;
10355: $txt=~tr/A-J/0-9/;
10356: $txt=~tr/a-j/0-9/;
10357: $txt=~tr/K-T/0-9/;
10358: $txt=~tr/k-t/0-9/;
10359: $txt=~tr/U-Z/0-5/;
10360: $txt=~tr/u-z/0-5/;
10361: $txt=~s/\D//g;
10362: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10363: my $total;
10364: foreach my $val (@txts) { $total+=$val; }
10365: if ($_64bit) { $total=(($total<<32)>>32); }
10366: return $total;
10367: }
10368:
10369: sub digest {
10370: my ($data)=@_;
10371: my $digest=&Digest::MD5::md5($data);
10372: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10373: my ($e,$f);
10374: {
10375: use integer;
10376: $e=($a+$b);
10377: $f=($c+$d);
10378: if ($_64bit) {
10379: $e=(($e<<32)>>32);
10380: $f=(($f<<32)>>32);
10381: }
10382: }
10383: if (wantarray) {
10384: return ($e,$f);
10385: } else {
10386: my $g;
10387: {
10388: use integer;
10389: $g=($e+$f);
10390: if ($_64bit) {
10391: $g=(($g<<32)>>32);
10392: }
10393: }
10394: return $g;
10395: }
10396: }
10397:
10398: sub latest_rnd_algorithm_id {
10399: return '64bit5';
10400: }
10401:
10402: sub get_rand_alg {
10403: my ($courseid)=@_;
10404: if (!$courseid) { $courseid=(&whichuser())[1]; }
10405: if ($courseid) {
10406: return $env{"course.$courseid.rndseed"};
10407: }
10408: return &latest_rnd_algorithm_id();
10409: }
10410:
10411: sub validCODE {
10412: my ($CODE)=@_;
10413: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10414: return 0;
10415: }
10416:
10417: sub getCODE {
10418: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10419: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10420: defined($Apache::lonhomework::parsing_a_task) ) &&
10421: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10422: return $Apache::lonhomework::history{'resource.CODE'};
10423: }
10424: return undef;
10425: }
10426: #
10427: # Determines the random seed for a specific context:
10428: #
10429: # parameters:
10430: # symb - in course context the symb for the seed.
10431: # course_id - The course id of the form domain_coursenum.
10432: # domain - Domain for the user.
10433: # course - Course for the user.
10434: # cenv - environment of the course.
10435: #
10436: # NOTE:
10437: # All parameters are picked out of the environment if missing
10438: # or not defined.
10439: # If a symb cannot be determined the current time is used instead.
10440: #
10441: # For a given well defined symb, courside, domain, username,
10442: # and course environment, the seed is reproducible.
10443: #
10444: sub rndseed {
10445: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10446: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10447: if (!defined($symb)) {
10448: unless ($symb=$wsymb) { return time; }
10449: }
10450: if (!defined $courseid) {
10451: $courseid=$wcourseid;
10452: }
10453: if (!defined $domain) { $domain=$wdomain; }
10454: if (!defined $username) { $username=$wusername }
10455:
10456: my $which;
10457: if (defined($cenv->{'rndseed'})) {
10458: $which = $cenv->{'rndseed'};
10459: } else {
10460: $which =&get_rand_alg($courseid);
10461: }
10462: if (defined(&getCODE())) {
10463:
10464: if ($which eq '64bit5') {
10465: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10466: } elsif ($which eq '64bit4') {
10467: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10468: } else {
10469: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10470: }
10471: } elsif ($which eq '64bit5') {
10472: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10473: } elsif ($which eq '64bit4') {
10474: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10475: } elsif ($which eq '64bit3') {
10476: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10477: } elsif ($which eq '64bit2') {
10478: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10479: } elsif ($which eq '64bit') {
10480: return &rndseed_64bit($symb,$courseid,$domain,$username);
10481: }
10482: return &rndseed_32bit($symb,$courseid,$domain,$username);
10483: }
10484:
10485: sub rndseed_32bit {
10486: my ($symb,$courseid,$domain,$username)=@_;
10487: {
10488: use integer;
10489: my $symbchck=unpack("%32C*",$symb) << 27;
10490: my $symbseed=numval($symb) << 22;
10491: my $namechck=unpack("%32C*",$username) << 17;
10492: my $nameseed=numval($username) << 12;
10493: my $domainseed=unpack("%32C*",$domain) << 7;
10494: my $courseseed=unpack("%32C*",$courseid);
10495: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10496: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10497: #&logthis("rndseed :$num:$symb");
10498: if ($_64bit) { $num=(($num<<32)>>32); }
10499: return $num;
10500: }
10501: }
10502:
10503: sub rndseed_64bit {
10504: my ($symb,$courseid,$domain,$username)=@_;
10505: {
10506: use integer;
10507: my $symbchck=unpack("%32S*",$symb) << 21;
10508: my $symbseed=numval($symb) << 10;
10509: my $namechck=unpack("%32S*",$username);
10510:
10511: my $nameseed=numval($username) << 21;
10512: my $domainseed=unpack("%32S*",$domain) << 10;
10513: my $courseseed=unpack("%32S*",$courseid);
10514:
10515: my $num1=$symbchck+$symbseed+$namechck;
10516: my $num2=$nameseed+$domainseed+$courseseed;
10517: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10518: #&logthis("rndseed :$num:$symb");
10519: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10520: return "$num1,$num2";
10521: }
10522: }
10523:
10524: sub rndseed_64bit2 {
10525: my ($symb,$courseid,$domain,$username)=@_;
10526: {
10527: use integer;
10528: # strings need to be an even # of cahracters long, it it is odd the
10529: # last characters gets thrown away
10530: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10531: my $symbseed=numval($symb) << 10;
10532: my $namechck=unpack("%32S*",$username.' ');
10533:
10534: my $nameseed=numval($username) << 21;
10535: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10536: my $courseseed=unpack("%32S*",$courseid.' ');
10537:
10538: my $num1=$symbchck+$symbseed+$namechck;
10539: my $num2=$nameseed+$domainseed+$courseseed;
10540: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10541: #&logthis("rndseed :$num:$symb");
10542: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10543: return "$num1,$num2";
10544: }
10545: }
10546:
10547: sub rndseed_64bit3 {
10548: my ($symb,$courseid,$domain,$username)=@_;
10549: {
10550: use integer;
10551: # strings need to be an even # of cahracters long, it it is odd the
10552: # last characters gets thrown away
10553: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10554: my $symbseed=numval2($symb) << 10;
10555: my $namechck=unpack("%32S*",$username.' ');
10556:
10557: my $nameseed=numval2($username) << 21;
10558: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10559: my $courseseed=unpack("%32S*",$courseid.' ');
10560:
10561: my $num1=$symbchck+$symbseed+$namechck;
10562: my $num2=$nameseed+$domainseed+$courseseed;
10563: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10564: #&logthis("rndseed :$num1:$num2:$_64bit");
10565: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10566:
10567: return "$num1:$num2";
10568: }
10569: }
10570:
10571: sub rndseed_64bit4 {
10572: my ($symb,$courseid,$domain,$username)=@_;
10573: {
10574: use integer;
10575: # strings need to be an even # of cahracters long, it it is odd the
10576: # last characters gets thrown away
10577: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10578: my $symbseed=numval3($symb) << 10;
10579: my $namechck=unpack("%32S*",$username.' ');
10580:
10581: my $nameseed=numval3($username) << 21;
10582: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10583: my $courseseed=unpack("%32S*",$courseid.' ');
10584:
10585: my $num1=$symbchck+$symbseed+$namechck;
10586: my $num2=$nameseed+$domainseed+$courseseed;
10587: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10588: #&logthis("rndseed :$num1:$num2:$_64bit");
10589: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10590:
10591: return "$num1:$num2";
10592: }
10593: }
10594:
10595: sub rndseed_64bit5 {
10596: my ($symb,$courseid,$domain,$username)=@_;
10597: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10598: return "$num1:$num2";
10599: }
10600:
10601: sub rndseed_CODE_64bit {
10602: my ($symb,$courseid,$domain,$username)=@_;
10603: {
10604: use integer;
10605: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10606: my $symbseed=numval2($symb);
10607: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10608: my $CODEseed=numval(&getCODE());
10609: my $courseseed=unpack("%32S*",$courseid.' ');
10610: my $num1=$symbseed+$CODEchck;
10611: my $num2=$CODEseed+$courseseed+$symbchck;
10612: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10613: #&logthis("rndseed :$num1:$num2:$symb");
10614: if ($_64bit) { $num1=(($num1<<32)>>32); }
10615: if ($_64bit) { $num2=(($num2<<32)>>32); }
10616: return "$num1:$num2";
10617: }
10618: }
10619:
10620: sub rndseed_CODE_64bit4 {
10621: my ($symb,$courseid,$domain,$username)=@_;
10622: {
10623: use integer;
10624: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10625: my $symbseed=numval3($symb);
10626: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10627: my $CODEseed=numval3(&getCODE());
10628: my $courseseed=unpack("%32S*",$courseid.' ');
10629: my $num1=$symbseed+$CODEchck;
10630: my $num2=$CODEseed+$courseseed+$symbchck;
10631: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10632: #&logthis("rndseed :$num1:$num2:$symb");
10633: if ($_64bit) { $num1=(($num1<<32)>>32); }
10634: if ($_64bit) { $num2=(($num2<<32)>>32); }
10635: return "$num1:$num2";
10636: }
10637: }
10638:
10639: sub rndseed_CODE_64bit5 {
10640: my ($symb,$courseid,$domain,$username)=@_;
10641: my $code = &getCODE();
10642: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10643: return "$num1:$num2";
10644: }
10645:
10646: sub setup_random_from_rndseed {
10647: my ($rndseed)=@_;
10648: if ($rndseed =~/([,:])/) {
10649: my ($num1,$num2)=split(/[,:]/,$rndseed);
10650: &Math::Random::random_set_seed(abs($num1),abs($num2));
10651: } else {
10652: &Math::Random::random_set_seed_from_phrase($rndseed);
10653: }
10654: }
10655:
10656: sub latest_receipt_algorithm_id {
10657: return 'receipt3';
10658: }
10659:
10660: sub recunique {
10661: my $fucourseid=shift;
10662: my $unique;
10663: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10664: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10665: $unique=$env{"course.$fucourseid.internal.encseed"};
10666: } else {
10667: $unique=$perlvar{'lonReceipt'};
10668: }
10669: return unpack("%32C*",$unique);
10670: }
10671:
10672: sub recprefix {
10673: my $fucourseid=shift;
10674: my $prefix;
10675: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10676: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10677: $prefix=$env{"course.$fucourseid.internal.encpref"};
10678: } else {
10679: $prefix=$perlvar{'lonHostID'};
10680: }
10681: return unpack("%32C*",$prefix);
10682: }
10683:
10684: sub ireceipt {
10685: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10686:
10687: my $return =&recprefix($fucourseid).'-';
10688:
10689: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10690: $env{'request.state'} eq 'construct') {
10691: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10692: return $return;
10693: }
10694:
10695: my $cuname=unpack("%32C*",$funame);
10696: my $cudom=unpack("%32C*",$fudom);
10697: my $cucourseid=unpack("%32C*",$fucourseid);
10698: my $cusymb=unpack("%32C*",$fusymb);
10699: my $cunique=&recunique($fucourseid);
10700: my $cpart=unpack("%32S*",$part);
10701: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10702:
10703: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10704:
10705: $return.= ($cunique%$cuname+
10706: $cunique%$cudom+
10707: $cusymb%$cuname+
10708: $cusymb%$cudom+
10709: $cucourseid%$cuname+
10710: $cucourseid%$cudom+
10711: $cpart%$cuname+
10712: $cpart%$cudom);
10713: } else {
10714: $return.= ($cunique%$cuname+
10715: $cunique%$cudom+
10716: $cusymb%$cuname+
10717: $cusymb%$cudom+
10718: $cucourseid%$cuname+
10719: $cucourseid%$cudom);
10720: }
10721: return $return;
10722: }
10723:
10724: sub receipt {
10725: my ($part)=@_;
10726: my ($symb,$courseid,$domain,$name) = &whichuser();
10727: return &ireceipt($name,$domain,$courseid,$symb,$part);
10728: }
10729:
10730: sub whichuser {
10731: my ($passedsymb)=@_;
10732: my ($symb,$courseid,$domain,$name,$publicuser);
10733: if (defined($env{'form.grade_symb'})) {
10734: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10735: my $allowed=&allowed('vgr',$tmp_courseid);
10736: if (!$allowed &&
10737: exists($env{'request.course.sec'}) &&
10738: $env{'request.course.sec'} !~ /^\s*$/) {
10739: $allowed=&allowed('vgr',$tmp_courseid.
10740: '/'.$env{'request.course.sec'});
10741: }
10742: if ($allowed) {
10743: ($symb)=&get_env_multiple('form.grade_symb');
10744: $courseid=$tmp_courseid;
10745: ($domain)=&get_env_multiple('form.grade_domain');
10746: ($name)=&get_env_multiple('form.grade_username');
10747: return ($symb,$courseid,$domain,$name,$publicuser);
10748: }
10749: }
10750: if (!$passedsymb) {
10751: $symb=&symbread();
10752: } else {
10753: $symb=$passedsymb;
10754: }
10755: $courseid=$env{'request.course.id'};
10756: $domain=$env{'user.domain'};
10757: $name=$env{'user.name'};
10758: if ($name eq 'public' && $domain eq 'public') {
10759: if (!defined($env{'form.username'})) {
10760: $env{'form.username'}.=time.rand(10000000);
10761: }
10762: $name.=$env{'form.username'};
10763: }
10764: return ($symb,$courseid,$domain,$name,$publicuser);
10765:
10766: }
10767:
10768: # ------------------------------------------------------------ Serves up a file
10769: # returns either the contents of the file or
10770: # -1 if the file doesn't exist
10771: #
10772: # if the target is a file that was uploaded via DOCS,
10773: # a check will be made to see if a current copy exists on the local server,
10774: # if it does this will be served, otherwise a copy will be retrieved from
10775: # the home server for the course and stored in /home/httpd/html/userfiles on
10776: # the local server.
10777:
10778: sub getfile {
10779: my ($file) = @_;
10780: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10781: &repcopy($file);
10782: return &readfile($file);
10783: }
10784:
10785: sub repcopy_userfile {
10786: my ($file)=@_;
10787: my $londocroot = $perlvar{'lonDocRoot'};
10788: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10789: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10790: my ($cdom,$cnum,$filename) =
10791: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10792: my $uri="/uploaded/$cdom/$cnum/$filename";
10793: if (-e "$file") {
10794: # we already have a local copy, check it out
10795: my @fileinfo = stat($file);
10796: my $rtncode;
10797: my $info;
10798: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
10799: if ($lwpresp ne 'ok') {
10800: # there is no such file anymore, even though we had a local copy
10801: if ($rtncode eq '404') {
10802: unlink($file);
10803: }
10804: return -1;
10805: }
10806: if ($info < $fileinfo[9]) {
10807: # nice, the file we have is up-to-date, just say okay
10808: return 'ok';
10809: } else {
10810: # the file is outdated, get rid of it
10811: unlink($file);
10812: }
10813: }
10814: # one way or the other, at this point, we don't have the file
10815: # construct the correct path for the file
10816: my @parts = ($cdom,$cnum);
10817: if ($filename =~ m|^(.+)/[^/]+$|) {
10818: push @parts, split(/\//,$1);
10819: }
10820: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
10821: foreach my $part (@parts) {
10822: $path .= '/'.$part;
10823: if (!-e $path) {
10824: mkdir($path,0770);
10825: }
10826: }
10827: # now the path exists for sure
10828: # get a user agent
10829: my $ua=new LWP::UserAgent;
10830: my $transferfile=$file.'.in.transfer';
10831: # FIXME: this should flock
10832: if (-e $transferfile) { return 'ok'; }
10833: my $request;
10834: $uri=~s/^\///;
10835: my $homeserver = &homeserver($cnum,$cdom);
10836: my $protocol = $protocol{$homeserver};
10837: $protocol = 'http' if ($protocol ne 'https');
10838: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
10839: my $response=$ua->request($request,$transferfile);
10840: # did it work?
10841: if ($response->is_error()) {
10842: unlink($transferfile);
10843: &logthis("Userfile repcopy failed for $uri");
10844: return -1;
10845: }
10846: # worked, rename the transfer file
10847: rename($transferfile,$file);
10848: return 'ok';
10849: }
10850:
10851: sub tokenwrapper {
10852: my $uri=shift;
10853: $uri=~s|^https?\://([^/]+)||;
10854: $uri=~s|^/||;
10855: $env{'user.environment'}=~/\/([^\/]+)\.id/;
10856: my $token=$1;
10857: my (undef,$udom,$uname,$file)=split('/',$uri,4);
10858: if ($udom && $uname && $file) {
10859: $file=~s|(\?\.*)*$||;
10860: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
10861: my $homeserver = &homeserver($uname,$udom);
10862: my $protocol = $protocol{$homeserver};
10863: $protocol = 'http' if ($protocol ne 'https');
10864: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
10865: (($uri=~/\?/)?'&':'?').'token='.$token.
10866: '&tokenissued='.$perlvar{'lonHostID'};
10867: } else {
10868: return '/adm/notfound.html';
10869: }
10870: }
10871:
10872: # call with reqtype HEAD: get last modification time
10873: # call with reqtype GET: get the file contents
10874: # Do not call this with reqtype GET for large files! It loads everything into memory
10875: #
10876: sub getuploaded {
10877: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
10878: $uri=~s/^\///;
10879: my $homeserver = &homeserver($cnum,$cdom);
10880: my $protocol = $protocol{$homeserver};
10881: $protocol = 'http' if ($protocol ne 'https');
10882: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
10883: my $ua=new LWP::UserAgent;
10884: my $request=new HTTP::Request($reqtype,$uri);
10885: my $response=$ua->request($request);
10886: $$rtncode = $response->code;
10887: if (! $response->is_success()) {
10888: return 'failed';
10889: }
10890: if ($reqtype eq 'HEAD') {
10891: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
10892: } elsif ($reqtype eq 'GET') {
10893: $$info = $response->content;
10894: }
10895: return 'ok';
10896: }
10897:
10898: sub readfile {
10899: my $file = shift;
10900: if ( (! -e $file ) || ($file eq '') ) { return -1; };
10901: my $fh;
10902: open($fh,"<$file");
10903: my $a='';
10904: while (my $line = <$fh>) { $a .= $line; }
10905: return $a;
10906: }
10907:
10908: sub filelocation {
10909: my ($dir,$file) = @_;
10910: my $location;
10911: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
10912:
10913: if ($file =~ m-^/adm/-) {
10914: $file=~s-^/adm/wrapper/-/-;
10915: $file=~s-^/adm/coursedocs/showdoc/-/-;
10916: }
10917:
10918: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
10919: $location = $file;
10920: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
10921: my ($udom,$uname,$filename)=
10922: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
10923: my $home=&homeserver($uname,$udom);
10924: my $is_me=0;
10925: my @ids=¤t_machine_ids();
10926: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
10927: if ($is_me) {
10928: $location=propath($udom,$uname).'/userfiles/'.$filename;
10929: } else {
10930: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
10931: $udom.'/'.$uname.'/'.$filename;
10932: }
10933: } elsif ($file =~ m-^/adm/-) {
10934: $location = $perlvar{'lonDocRoot'}.'/'.$file;
10935: } else {
10936: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10937: $file=~s:^/(res|priv)/:/:;
10938: my $space=$1;
10939: if ( !( $file =~ m:^/:) ) {
10940: $location = $dir. '/'.$file;
10941: } else {
10942: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
10943: }
10944: }
10945: $location=~s://+:/:g; # remove duplicate /
10946: while ($location=~m{/\.\./}) {
10947: if ($location =~ m{/[^/]+/\.\./}) {
10948: $location=~ s{/[^/]+/\.\./}{/}g;
10949: } else {
10950: $location=~ s{/\.\./}{/}g;
10951: }
10952: } #remove dir/..
10953: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
10954: return $location;
10955: }
10956:
10957: sub hreflocation {
10958: my ($dir,$file)=@_;
10959: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
10960: $file=filelocation($dir,$file);
10961: } elsif ($file=~m-^/adm/-) {
10962: $file=~s-^/adm/wrapper/-/-;
10963: $file=~s-^/adm/coursedocs/showdoc/-/-;
10964: }
10965: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
10966: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
10967: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
10968: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
10969: {/uploaded/$1/$2/}x;
10970: }
10971: if ($file=~ m{^/userfiles/}) {
10972: $file =~ s{^/userfiles/}{/uploaded/};
10973: }
10974: return $file;
10975: }
10976:
10977:
10978:
10979:
10980:
10981: sub current_machine_domains {
10982: return &machine_domains(&hostname($perlvar{'lonHostID'}));
10983: }
10984:
10985: sub machine_domains {
10986: my ($hostname) = @_;
10987: my @domains;
10988: my %hostname = &all_hostnames();
10989: while( my($id, $name) = each(%hostname)) {
10990: # &logthis("-$id-$name-$hostname-");
10991: if ($hostname eq $name) {
10992: push(@domains,&host_domain($id));
10993: }
10994: }
10995: return @domains;
10996: }
10997:
10998: sub current_machine_ids {
10999: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11000: }
11001:
11002: sub machine_ids {
11003: my ($hostname) = @_;
11004: $hostname ||= &hostname($perlvar{'lonHostID'});
11005: my @ids;
11006: my %name_to_host = &all_names();
11007: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11008: return @{ $name_to_host{$hostname} };
11009: }
11010: return;
11011: }
11012:
11013: sub additional_machine_domains {
11014: my @domains;
11015: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11016: while( my $line = <$fh>) {
11017: $line =~ s/\s//g;
11018: push(@domains,$line);
11019: }
11020: return @domains;
11021: }
11022:
11023: sub default_login_domain {
11024: my $domain = $perlvar{'lonDefDomain'};
11025: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11026: foreach my $posdom (¤t_machine_domains(),
11027: &additional_machine_domains()) {
11028: if (lc($posdom) eq lc($testdomain)) {
11029: $domain=$posdom;
11030: last;
11031: }
11032: }
11033: return $domain;
11034: }
11035:
11036: # ------------------------------------------------------------- Declutters URLs
11037:
11038: sub declutter {
11039: my $thisfn=shift;
11040: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11041: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11042: $thisfn=~s/^\///;
11043: $thisfn=~s|^adm/wrapper/||;
11044: $thisfn=~s|^adm/coursedocs/showdoc/||;
11045: $thisfn=~s/^res\///;
11046: $thisfn=~s/^priv\///;
11047: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11048: $thisfn=~s/\?.+$//;
11049: }
11050: return $thisfn;
11051: }
11052:
11053: # ------------------------------------------------------------- Clutter up URLs
11054:
11055: sub clutter {
11056: my $thisfn='/'.&declutter(shift);
11057: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11058: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11059: $thisfn='/res'.$thisfn;
11060: }
11061: if ($thisfn !~m|^/adm|) {
11062: if ($thisfn =~ m|^/ext/|) {
11063: $thisfn='/adm/wrapper'.$thisfn;
11064: } else {
11065: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11066: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11067: if ($embstyle eq 'ssi'
11068: || ($embstyle eq 'hdn')
11069: || ($embstyle eq 'rat')
11070: || ($embstyle eq 'prv')
11071: || ($embstyle eq 'ign')) {
11072: #do nothing with these
11073: } elsif (($embstyle eq 'img')
11074: || ($embstyle eq 'emb')
11075: || ($embstyle eq 'wrp')) {
11076: $thisfn='/adm/wrapper'.$thisfn;
11077: } elsif ($embstyle eq 'unk'
11078: && $thisfn!~/\.(sequence|page)$/) {
11079: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11080: } else {
11081: # &logthis("Got a blank emb style");
11082: }
11083: }
11084: }
11085: return $thisfn;
11086: }
11087:
11088: sub clutter_with_no_wrapper {
11089: my $uri = &clutter(shift);
11090: if ($uri =~ m-^/adm/-) {
11091: $uri =~ s-^/adm/wrapper/-/-;
11092: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11093: }
11094: return $uri;
11095: }
11096:
11097: sub freeze_escape {
11098: my ($value)=@_;
11099: if (ref($value)) {
11100: $value=&nfreeze($value);
11101: return '__FROZEN__'.&escape($value);
11102: }
11103: return &escape($value);
11104: }
11105:
11106:
11107: sub thaw_unescape {
11108: my ($value)=@_;
11109: if ($value =~ /^__FROZEN__/) {
11110: substr($value,0,10,undef);
11111: $value=&unescape($value);
11112: return &thaw($value);
11113: }
11114: return &unescape($value);
11115: }
11116:
11117: sub correct_line_ends {
11118: my ($result)=@_;
11119: $$result =~s/\r\n/\n/mg;
11120: $$result =~s/\r/\n/mg;
11121: }
11122: # ================================================================ Main Program
11123:
11124: sub goodbye {
11125: &logthis("Starting Shut down");
11126: #not converted to using infrastruture and probably shouldn't be
11127: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11128: #converted
11129: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11130: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11131: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11132: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11133: #1.1 only
11134: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11135: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11136: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11137: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11138: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11139: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11140: &logthis(sprintf("%-20s is %s",'hits',$hits));
11141: &flushcourselogs();
11142: &logthis("Shutting down");
11143: }
11144:
11145: sub get_dns {
11146: my ($url,$func,$ignore_cache) = @_;
11147: if (!$ignore_cache) {
11148: my ($content,$cached)=
11149: &Apache::lonnet::is_cached_new('dns',$url);
11150: if ($cached) {
11151: &$func($content);
11152: return;
11153: }
11154: }
11155:
11156: my %alldns;
11157: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11158: foreach my $dns (<$config>) {
11159: next if ($dns !~ /^\^(\S*)/x);
11160: my $line = $1;
11161: my ($host,$protocol) = split(/:/,$line);
11162: if ($protocol ne 'https') {
11163: $protocol = 'http';
11164: }
11165: $alldns{$host} = $protocol;
11166: }
11167: while (%alldns) {
11168: my ($dns) = keys(%alldns);
11169: my $ua=new LWP::UserAgent;
11170: $ua->timeout(30);
11171: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11172: my $response=$ua->request($request);
11173: delete($alldns{$dns});
11174: next if ($response->is_error());
11175: my @content = split("\n",$response->content);
11176: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
11177: &$func(\@content);
11178: return;
11179: }
11180: close($config);
11181: my $which = (split('/',$url))[3];
11182: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11183: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11184: my @content = <$config>;
11185: &$func(\@content);
11186: return;
11187: }
11188: # ------------------------------------------------------------ Read domain file
11189: {
11190: my $loaded;
11191: my %domain;
11192:
11193: sub parse_domain_tab {
11194: my ($lines) = @_;
11195: foreach my $line (@$lines) {
11196: next if ($line =~ /^(\#|\s*$ )/x);
11197:
11198: chomp($line);
11199: my ($name,@elements) = split(/:/,$line,9);
11200: my %this_domain;
11201: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11202: 'lang_def', 'city', 'longi', 'lati',
11203: 'primary') {
11204: $this_domain{$field} = shift(@elements);
11205: }
11206: $domain{$name} = \%this_domain;
11207: }
11208: }
11209:
11210: sub reset_domain_info {
11211: undef($loaded);
11212: undef(%domain);
11213: }
11214:
11215: sub load_domain_tab {
11216: my ($ignore_cache) = @_;
11217: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11218: my $fh;
11219: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11220: my @lines = <$fh>;
11221: &parse_domain_tab(\@lines);
11222: }
11223: close($fh);
11224: $loaded = 1;
11225: }
11226:
11227: sub domain {
11228: &load_domain_tab() if (!$loaded);
11229:
11230: my ($name,$what) = @_;
11231: return if ( !exists($domain{$name}) );
11232:
11233: if (!$what) {
11234: return $domain{$name}{'description'};
11235: }
11236: return $domain{$name}{$what};
11237: }
11238:
11239: sub domain_info {
11240: &load_domain_tab() if (!$loaded);
11241: return %domain;
11242: }
11243:
11244: }
11245:
11246:
11247: # ------------------------------------------------------------- Read hosts file
11248: {
11249: my %hostname;
11250: my %hostdom;
11251: my %libserv;
11252: my $loaded;
11253: my %name_to_host;
11254: my %internetdom;
11255: my %LC_dns_serv;
11256:
11257: sub parse_hosts_tab {
11258: my ($file) = @_;
11259: foreach my $configline (@$file) {
11260: next if ($configline =~ /^(\#|\s*$ )/x);
11261: chomp($configline);
11262: if ($configline =~ /^\^/) {
11263: if ($configline =~ /^\^([\w.\-]+)/) {
11264: $LC_dns_serv{$1} = 1;
11265: }
11266: next;
11267: }
11268: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11269: $name=~s/\s//g;
11270: if ($id && $domain && $role && $name) {
11271: $hostname{$id}=$name;
11272: push(@{$name_to_host{$name}}, $id);
11273: $hostdom{$id}=$domain;
11274: if ($role eq 'library') { $libserv{$id}=$name; }
11275: if (defined($protocol)) {
11276: if ($protocol eq 'https') {
11277: $protocol{$id} = $protocol;
11278: } else {
11279: $protocol{$id} = 'http';
11280: }
11281: } else {
11282: $protocol{$id} = 'http';
11283: }
11284: if (defined($intdom)) {
11285: $internetdom{$id} = $intdom;
11286: }
11287: }
11288: }
11289: }
11290:
11291: sub reset_hosts_info {
11292: &purge_remembered();
11293: &reset_domain_info();
11294: &reset_hosts_ip_info();
11295: undef(%name_to_host);
11296: undef(%hostname);
11297: undef(%hostdom);
11298: undef(%libserv);
11299: undef($loaded);
11300: }
11301:
11302: sub load_hosts_tab {
11303: my ($ignore_cache) = @_;
11304: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11305: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11306: my @config = <$config>;
11307: &parse_hosts_tab(\@config);
11308: close($config);
11309: $loaded=1;
11310: }
11311:
11312: sub hostname {
11313: &load_hosts_tab() if (!$loaded);
11314:
11315: my ($lonid) = @_;
11316: return $hostname{$lonid};
11317: }
11318:
11319: sub all_hostnames {
11320: &load_hosts_tab() if (!$loaded);
11321:
11322: return %hostname;
11323: }
11324:
11325: sub all_names {
11326: &load_hosts_tab() if (!$loaded);
11327:
11328: return %name_to_host;
11329: }
11330:
11331: sub all_host_domain {
11332: &load_hosts_tab() if (!$loaded);
11333: return %hostdom;
11334: }
11335:
11336: sub is_library {
11337: &load_hosts_tab() if (!$loaded);
11338:
11339: return exists($libserv{$_[0]});
11340: }
11341:
11342: sub all_library {
11343: &load_hosts_tab() if (!$loaded);
11344:
11345: return %libserv;
11346: }
11347:
11348: sub unique_library {
11349: #2x reverse removes all hostnames that appear more than once
11350: my %unique = reverse &all_library();
11351: return reverse %unique;
11352: }
11353:
11354: sub get_servers {
11355: &load_hosts_tab() if (!$loaded);
11356:
11357: my ($domain,$type) = @_;
11358: my %possible_hosts = ($type eq 'library') ? %libserv
11359: : %hostname;
11360: my %result;
11361: if (ref($domain) eq 'ARRAY') {
11362: while ( my ($host,$hostname) = each(%possible_hosts)) {
11363: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11364: $result{$host} = $hostname;
11365: }
11366: }
11367: } else {
11368: while ( my ($host,$hostname) = each(%possible_hosts)) {
11369: if ($hostdom{$host} eq $domain) {
11370: $result{$host} = $hostname;
11371: }
11372: }
11373: }
11374: return %result;
11375: }
11376:
11377: sub get_unique_servers {
11378: my %unique = reverse &get_servers(@_);
11379: return reverse %unique;
11380: }
11381:
11382: sub host_domain {
11383: &load_hosts_tab() if (!$loaded);
11384:
11385: my ($lonid) = @_;
11386: return $hostdom{$lonid};
11387: }
11388:
11389: sub all_domains {
11390: &load_hosts_tab() if (!$loaded);
11391:
11392: my %seen;
11393: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11394: return @uniq;
11395: }
11396:
11397: sub internet_dom {
11398: &load_hosts_tab() if (!$loaded);
11399:
11400: my ($lonid) = @_;
11401: return $internetdom{$lonid};
11402: }
11403:
11404: sub is_LC_dns {
11405: &load_hosts_tab() if (!$loaded);
11406:
11407: my ($hostname) = @_;
11408: return exists($LC_dns_serv{$hostname});
11409: }
11410:
11411: }
11412:
11413: {
11414: my %iphost;
11415: my %name_to_ip;
11416: my %lonid_to_ip;
11417:
11418: sub get_hosts_from_ip {
11419: my ($ip) = @_;
11420: my %iphosts = &get_iphost();
11421: if (ref($iphosts{$ip})) {
11422: return @{$iphosts{$ip}};
11423: }
11424: return;
11425: }
11426:
11427: sub reset_hosts_ip_info {
11428: undef(%iphost);
11429: undef(%name_to_ip);
11430: undef(%lonid_to_ip);
11431: }
11432:
11433: sub get_host_ip {
11434: my ($lonid) = @_;
11435: if (exists($lonid_to_ip{$lonid})) {
11436: return $lonid_to_ip{$lonid};
11437: }
11438: my $name=&hostname($lonid);
11439: my $ip = gethostbyname($name);
11440: return if (!$ip || length($ip) ne 4);
11441: $ip=inet_ntoa($ip);
11442: $name_to_ip{$name} = $ip;
11443: $lonid_to_ip{$lonid} = $ip;
11444: return $ip;
11445: }
11446:
11447: sub get_iphost {
11448: my ($ignore_cache) = @_;
11449:
11450: if (!$ignore_cache) {
11451: if (%iphost) {
11452: return %iphost;
11453: }
11454: my ($ip_info,$cached)=
11455: &Apache::lonnet::is_cached_new('iphost','iphost');
11456: if ($cached) {
11457: %iphost = %{$ip_info->[0]};
11458: %name_to_ip = %{$ip_info->[1]};
11459: %lonid_to_ip = %{$ip_info->[2]};
11460: return %iphost;
11461: }
11462: }
11463:
11464: # get yesterday's info for fallback
11465: my %old_name_to_ip;
11466: my ($ip_info,$cached)=
11467: &Apache::lonnet::is_cached_new('iphost','iphost');
11468: if ($cached) {
11469: %old_name_to_ip = %{$ip_info->[1]};
11470: }
11471:
11472: my %name_to_host = &all_names();
11473: foreach my $name (keys(%name_to_host)) {
11474: my $ip;
11475: if (!exists($name_to_ip{$name})) {
11476: $ip = gethostbyname($name);
11477: if (!$ip || length($ip) ne 4) {
11478: if (defined($old_name_to_ip{$name})) {
11479: $ip = $old_name_to_ip{$name};
11480: &logthis("Can't find $name defaulting to old $ip");
11481: } else {
11482: &logthis("Name $name no IP found");
11483: next;
11484: }
11485: } else {
11486: $ip=inet_ntoa($ip);
11487: }
11488: $name_to_ip{$name} = $ip;
11489: } else {
11490: $ip = $name_to_ip{$name};
11491: }
11492: foreach my $id (@{ $name_to_host{$name} }) {
11493: $lonid_to_ip{$id} = $ip;
11494: }
11495: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11496: }
11497: &Apache::lonnet::do_cache_new('iphost','iphost',
11498: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11499: 48*60*60);
11500:
11501: return %iphost;
11502: }
11503:
11504: #
11505: # Given a DNS returns the loncapa host name for that DNS
11506: #
11507: sub host_from_dns {
11508: my ($dns) = @_;
11509: my @hosts;
11510: my $ip;
11511:
11512: if (exists($name_to_ip{$dns})) {
11513: $ip = $name_to_ip{$dns};
11514: }
11515: if (!$ip) {
11516: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11517: if (length($ip) == 4) {
11518: $ip = &IO::Socket::inet_ntoa($ip);
11519: }
11520: }
11521: if ($ip) {
11522: @hosts = get_hosts_from_ip($ip);
11523: return $hosts[0];
11524: }
11525: return undef;
11526: }
11527:
11528: sub get_internet_names {
11529: my ($lonid) = @_;
11530: return if ($lonid eq '');
11531: my ($idnref,$cached)=
11532: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11533: if ($cached) {
11534: return $idnref;
11535: }
11536: my $ip = &get_host_ip($lonid);
11537: my @hosts = &get_hosts_from_ip($ip);
11538: my %iphost = &get_iphost();
11539: my (@idns,%seen);
11540: foreach my $id (@hosts) {
11541: my $dom = &host_domain($id);
11542: my $prim_id = &domain($dom,'primary');
11543: my $prim_ip = &get_host_ip($prim_id);
11544: next if ($seen{$prim_ip});
11545: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11546: foreach my $id (@{$iphost{$prim_ip}}) {
11547: my $intdom = &internet_dom($id);
11548: unless (grep(/^\Q$intdom\E$/,@idns)) {
11549: push(@idns,$intdom);
11550: }
11551: }
11552: }
11553: $seen{$prim_ip} = 1;
11554: }
11555: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11556: }
11557:
11558: }
11559:
11560: sub all_loncaparevs {
11561: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11562: }
11563:
11564: BEGIN {
11565:
11566: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11567: unless ($readit) {
11568: {
11569: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11570: %perlvar = (%perlvar,%{$configvars});
11571: }
11572:
11573:
11574: # ------------------------------------------------------ Read spare server file
11575: {
11576: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11577:
11578: while (my $configline=<$config>) {
11579: chomp($configline);
11580: if ($configline) {
11581: my ($host,$type) = split(':',$configline,2);
11582: if (!defined($type) || $type eq '') { $type = 'default' };
11583: push(@{ $spareid{$type} }, $host);
11584: }
11585: }
11586: close($config);
11587: }
11588: # ------------------------------------------------------------ Read permissions
11589: {
11590: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11591:
11592: while (my $configline=<$config>) {
11593: chomp($configline);
11594: if ($configline) {
11595: my ($role,$perm)=split(/ /,$configline);
11596: if ($perm ne '') { $pr{$role}=$perm; }
11597: }
11598: }
11599: close($config);
11600: }
11601:
11602: # -------------------------------------------- Read plain texts for permissions
11603: {
11604: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11605:
11606: while (my $configline=<$config>) {
11607: chomp($configline);
11608: if ($configline) {
11609: my ($short,@plain)=split(/:/,$configline);
11610: %{$prp{$short}} = ();
11611: if (@plain > 0) {
11612: $prp{$short}{'std'} = $plain[0];
11613: for (my $i=1; $i<@plain; $i++) {
11614: $prp{$short}{'alt'.$i} = $plain[$i];
11615: }
11616: }
11617: }
11618: }
11619: close($config);
11620: }
11621:
11622: # ---------------------------------------------------------- Read package table
11623: {
11624: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11625:
11626: while (my $configline=<$config>) {
11627: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11628: chomp($configline);
11629: my ($short,$plain)=split(/:/,$configline);
11630: my ($pack,$name)=split(/\&/,$short);
11631: if ($plain ne '') {
11632: $packagetab{$pack.'&'.$name.'&name'}=$name;
11633: $packagetab{$short}=$plain;
11634: }
11635: }
11636: close($config);
11637: }
11638:
11639: # ---------------------------------------------------------- Read loncaparev table
11640: {
11641: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11642: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11643: while (my $configline=<$config>) {
11644: chomp($configline);
11645: my ($hostid,$loncaparev)=split(/:/,$configline);
11646: $loncaparevs{$hostid}=$loncaparev;
11647: }
11648: close($config);
11649: }
11650: }
11651: }
11652:
11653: # ---------------------------------------------------------- Read serverhostID table
11654: {
11655: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11656: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11657: while (my $configline=<$config>) {
11658: chomp($configline);
11659: my ($name,$id)=split(/:/,$configline);
11660: $serverhomeIDs{$name}=$id;
11661: }
11662: close($config);
11663: }
11664: }
11665: }
11666:
11667: {
11668: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11669: if (-e $file) {
11670: my $parser = HTML::LCParser->new($file);
11671: while (my $token = $parser->get_token()) {
11672: if ($token->[0] eq 'S') {
11673: my $item = $token->[1];
11674: my $name = $token->[2]{'name'};
11675: my $value = $token->[2]{'value'};
11676: if ($item ne '' && $name ne '' && $value ne '') {
11677: my $release = $parser->get_text();
11678: $release =~ s/(^\s*|\s*$ )//gx;
11679: $needsrelease{$item.':'.$name.':'.$value} = $release;
11680: }
11681: }
11682: }
11683: }
11684: }
11685:
11686: # ---------------------------------------------------------- Read managers table
11687: {
11688: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11689: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11690: while (my $configline=<$config>) {
11691: chomp($configline);
11692: next if ($configline =~ /^\#/);
11693: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11694: $managerstab{$configline} = 1;
11695: }
11696: }
11697: close($config);
11698: }
11699: }
11700: }
11701:
11702: # ------------- set up temporary directory
11703: {
11704: $tmpdir = LONCAPA::tempdir();
11705:
11706: }
11707:
11708: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11709: 'compress_threshold'=> 20_000,
11710: });
11711:
11712: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11713: $dumpcount=0;
11714: $locknum=0;
11715:
11716: &logtouch();
11717: &logthis('<font color="yellow">INFO: Read configuration</font>');
11718: $readit=1;
11719: {
11720: use integer;
11721: my $test=(2**32)+1;
11722: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11723: &logthis(" Detected 64bit platform ($_64bit)");
11724: }
11725: }
11726: }
11727:
11728: 1;
11729: __END__
11730:
11731: =pod
11732:
11733: =head1 NAME
11734:
11735: Apache::lonnet - Subroutines to ask questions about things in the network.
11736:
11737: =head1 SYNOPSIS
11738:
11739: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11740:
11741: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11742:
11743: Common parameters:
11744:
11745: =over 4
11746:
11747: =item *
11748:
11749: $uname : an internal username (if $cname expecting a course Id specifically)
11750:
11751: =item *
11752:
11753: $udom : a domain (if $cdom expecting a course's domain specifically)
11754:
11755: =item *
11756:
11757: $symb : a resource instance identifier
11758:
11759: =item *
11760:
11761: $namespace : the name of a .db file that contains the data needed or
11762: being set.
11763:
11764: =back
11765:
11766: =head1 OVERVIEW
11767:
11768: lonnet provides subroutines which interact with the
11769: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11770: about classes, users, and resources.
11771:
11772: For many of these objects you can also use this to store data about
11773: them or modify them in various ways.
11774:
11775: =head2 Symbs
11776:
11777: To identify a specific instance of a resource, LON-CAPA uses symbols
11778: or "symbs"X<symb>. These identifiers are built from the URL of the
11779: map, the resource number of the resource in the map, and the URL of
11780: the resource itself. The latter is somewhat redundant, but might help
11781: if maps change.
11782:
11783: An example is
11784:
11785: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11786:
11787: The respective map entry is
11788:
11789: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11790: title="Problem 2">
11791: </resource>
11792:
11793: Symbs are used by the random number generator, as well as to store and
11794: restore data specific to a certain instance of for example a problem.
11795:
11796: =head2 Storing And Retrieving Data
11797:
11798: X<store()>X<cstore()>X<restore()>Three of the most important functions
11799: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
11800: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
11801: is is the non-critical message twin of cstore. These functions are for
11802: handlers to store a perl hash to a user's permanent data space in an
11803: easy manner, and to retrieve it again on another call. It is expected
11804: that a handler would use this once at the beginning to retrieve data,
11805: and then again once at the end to send only the new data back.
11806:
11807: The data is stored in the user's data directory on the user's
11808: homeserver under the ID of the course.
11809:
11810: The hash that is returned by restore will have all of the previous
11811: value for all of the elements of the hash.
11812:
11813: Example:
11814:
11815: #creating a hash
11816: my %hash;
11817: $hash{'foo'}='bar';
11818:
11819: #storing it
11820: &Apache::lonnet::cstore(\%hash);
11821:
11822: #changing a value
11823: $hash{'foo'}='notbar';
11824:
11825: #adding a new value
11826: $hash{'bar'}='foo';
11827: &Apache::lonnet::cstore(\%hash);
11828:
11829: #retrieving the hash
11830: my %history=&Apache::lonnet::restore();
11831:
11832: #print the hash
11833: foreach my $key (sort(keys(%history))) {
11834: print("\%history{$key} = $history{$key}");
11835: }
11836:
11837: Will print out:
11838:
11839: %history{1:foo} = bar
11840: %history{1:keys} = foo:timestamp
11841: %history{1:timestamp} = 990455579
11842: %history{2:bar} = foo
11843: %history{2:foo} = notbar
11844: %history{2:keys} = foo:bar:timestamp
11845: %history{2:timestamp} = 990455580
11846: %history{bar} = foo
11847: %history{foo} = notbar
11848: %history{timestamp} = 990455580
11849: %history{version} = 2
11850:
11851: Note that the special hash entries C<keys>, C<version> and
11852: C<timestamp> were added to the hash. C<version> will be equal to the
11853: total number of versions of the data that have been stored. The
11854: C<timestamp> attribute will be the UNIX time the hash was
11855: stored. C<keys> is available in every historical section to list which
11856: keys were added or changed at a specific historical revision of a
11857: hash.
11858:
11859: B<Warning>: do not store the hash that restore returns directly. This
11860: will cause a mess since it will restore the historical keys as if the
11861: were new keys. I.E. 1:foo will become 1:1:foo etc.
11862:
11863: Calling convention:
11864:
11865: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
11866: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
11867:
11868: For more detailed information, see lonnet specific documentation.
11869:
11870: =head1 RETURN MESSAGES
11871:
11872: =over 4
11873:
11874: =item * B<con_lost>: unable to contact remote host
11875:
11876: =item * B<con_delayed>: unable to contact remote host, message will be delivered
11877: when the connection is brought back up
11878:
11879: =item * B<con_failed>: unable to contact remote host and unable to save message
11880: for later delivery
11881:
11882: =item * B<error:>: an error a occurred, a description of the error follows the :
11883:
11884: =item * B<no_such_host>: unable to fund a host associated with the user/domain
11885: that was requested
11886:
11887: =back
11888:
11889: =head1 PUBLIC SUBROUTINES
11890:
11891: =head2 Session Environment Functions
11892:
11893: =over 4
11894:
11895: =item *
11896: X<appenv()>
11897: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
11898: the user envirnoment file, and will be restored for each access this
11899: user makes during this session, also modifies the %env for the current
11900: process. Optional rolesarrayref - if defined contains a reference to an array
11901: of roles which are exempt from the restriction on modifying user.role entries
11902: in the user's environment.db and in %env.
11903:
11904: =item *
11905: X<delenv()>
11906: B<delenv($delthis,$regexp)>: removes all items from the session
11907: environment file that begin with $delthis. If the
11908: optional second arg - $regexp - is true, $delthis is treated as a
11909: regular expression, otherwise \Q$delthis\E is used.
11910: The values are also deleted from the current processes %env.
11911:
11912: =item * get_env_multiple($name)
11913:
11914: gets $name from the %env hash, it seemlessly handles the cases where multiple
11915: values may be defined and end up as an array ref.
11916:
11917: returns an array of values
11918:
11919: =back
11920:
11921: =head2 User Information
11922:
11923: =over 4
11924:
11925: =item *
11926: X<queryauthenticate()>
11927: B<queryauthenticate($uname,$udom)>: try to determine user's current
11928: authentication scheme
11929:
11930: =item *
11931: X<authenticate()>
11932: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
11933: authenticate user from domain's lib servers (first use the current
11934: one). C<$upass> should be the users password.
11935: $checkdefauth is optional (value is 1 if a check should be made to
11936: authenticate user using default authentication method, and allow
11937: account creation if username does not have account in the domain).
11938: $clientcancheckhost is optional (value is 1 if checking whether the
11939: server can host will occur on the client side in lonauth.pm).
11940:
11941: =item *
11942: X<homeserver()>
11943: B<homeserver($uname,$udom)>: find the server which has
11944: the user's directory and files (there must be only one), this caches
11945: the answer, and also caches if there is a borken connection.
11946:
11947: =item *
11948: X<idget()>
11949: B<idget($udom,@ids)>: find the usernames behind a list of IDs
11950: (IDs are a unique resource in a domain, there must be only 1 ID per
11951: username, and only 1 username per ID in a specific domain) (returns
11952: hash: id=>name,id=>name)
11953:
11954: =item *
11955: X<idrget()>
11956: B<idrget($udom,@unames)>: find the IDs behind a list of
11957: usernames (returns hash: name=>id,name=>id)
11958:
11959: =item *
11960: X<idput()>
11961: B<idput($udom,%ids)>: store away a list of names and associated IDs
11962:
11963: =item *
11964: X<rolesinit()>
11965: B<rolesinit($udom,$username)>: get user privileges.
11966: returns user role, first access and timer interval hashes
11967:
11968: =item *
11969: X<privileged()>
11970: B<privileged($username,$domain)>: returns a true if user has a
11971: privileged and active role (i.e. su or dc), false otherwise.
11972:
11973: =item *
11974: X<getsection()>
11975: B<getsection($udom,$uname,$cname)>: finds the section of student in the
11976: course $cname, return section name/number or '' for "not in course"
11977: and '-1' for "no section"
11978:
11979: =item *
11980: X<userenvironment()>
11981: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
11982: passed in @what from the requested user's environment, returns a hash
11983:
11984: =item *
11985: X<userlog_query()>
11986: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
11987: activity.log file. %filters defines filters applied when parsing the
11988: log file. These can be start or end timestamps, or the type of action
11989: - log to look for Login or Logout events, check for Checkin or
11990: Checkout, role for role selection. The response is in the form
11991: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
11992: escaped strings of the action recorded in the activity.log file.
11993:
11994: =back
11995:
11996: =head2 User Roles
11997:
11998: =over 4
11999:
12000: =item *
12001:
12002: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12003: F: full access
12004: U,I,K: authentication modes (cxx only)
12005: '': forbidden
12006: 1: user needs to choose course
12007: 2: browse allowed
12008: A: passphrase authentication needed
12009:
12010: =item *
12011:
12012: constructaccess($url,$setpriv) : check for access to construction space URL
12013:
12014: See if the owner domain and name in the URL match those in the
12015: expected environment. If so, return three element list
12016: ($ownername,$ownerdomain,$ownerhome).
12017:
12018: Otherwise return the null string.
12019:
12020: If second argument 'setpriv' is true, it assigns the privileges,
12021: and returns the same three element list, unless the owner has
12022: blocked "ad hoc" Domain Coordinator access to the Author Space,
12023: in which case the null string is returned.
12024:
12025: =item *
12026:
12027: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12028: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12029: and course level
12030:
12031: =item *
12032:
12033: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12034: (rolesplain.tab); plain text explanation of a user role term.
12035: $type is Course (default) or Community.
12036: If $forcedefault evaluates to true, text returned will be default
12037: text for $type. Otherwise, if this is a course, the text returned
12038: will be a custom name for the role (if defined in the course's
12039: environment). If no custom name is defined the default is returned.
12040:
12041: =item *
12042:
12043: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
12044: All arguments are optional. Returns a hash of a roles, either for
12045: co-author/assistant author roles for a user's Construction Space
12046: (default), or if $context is 'userroles', roles for the user himself,
12047: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12048: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12049: For each key, value is set to colon-separated start and end times for
12050: the role. If no username and domain are specified, will default to
12051: current user/domain. Types, roles, and roledoms are references to arrays
12052: of role statuses (active, future or previous), roles
12053: (e.g., cc,in, st etc.) and domains of the roles which can be used
12054: to restrict the list of roles reported. If no array ref is
12055: provided for types, will default to return only active roles.
12056:
12057: =back
12058:
12059: =head2 User Modification
12060:
12061: =over 4
12062:
12063: =item *
12064:
12065: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12066: user for the level given by URL. Optional start and end dates (leave empty
12067: string or zero for "no date")
12068:
12069: =item *
12070:
12071: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12072: change a users, password, possible return values are: ok,
12073: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12074: refused
12075:
12076: =item *
12077:
12078: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12079:
12080: =item *
12081:
12082: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12083: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12084:
12085: will update user information (firstname,middlename,lastname,generation,
12086: permanentemail), and if forceid is true, student/employee ID also.
12087: A user's institutional affiliation(s) can also be updated.
12088: User information fields will not be overwritten with empty entries
12089: unless the field is included in the $candelete array reference.
12090: This array is included when a single user is modified via "Manage Users",
12091: or when Autoupdate.pl is run by cron in a domain.
12092:
12093: =item *
12094:
12095: modifystudent
12096:
12097: modify a student's enrollment and identification information.
12098: The course id is resolved based on the current users environment.
12099: This means the envoking user must be a course coordinator or otherwise
12100: associated with a course.
12101:
12102: This call is essentially a wrapper for lonnet::modifyuser and
12103: lonnet::modify_student_enrollment
12104:
12105: Inputs:
12106:
12107: =over 4
12108:
12109: =item B<$udom> Student's loncapa domain
12110:
12111: =item B<$uname> Student's loncapa login name
12112:
12113: =item B<$uid> Student/Employee ID
12114:
12115: =item B<$umode> Student's authentication mode
12116:
12117: =item B<$upass> Student's password
12118:
12119: =item B<$first> Student's first name
12120:
12121: =item B<$middle> Student's middle name
12122:
12123: =item B<$last> Student's last name
12124:
12125: =item B<$gene> Student's generation
12126:
12127: =item B<$usec> Student's section in course
12128:
12129: =item B<$end> Unix time of the roles expiration
12130:
12131: =item B<$start> Unix time of the roles start date
12132:
12133: =item B<$forceid> If defined, allow $uid to be changed
12134:
12135: =item B<$desiredhome> server to use as home server for student
12136:
12137: =item B<$email> Student's permanent e-mail address
12138:
12139: =item B<$type> Type of enrollment (auto or manual)
12140:
12141: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12142:
12143: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12144:
12145: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12146:
12147: =item B<$context> role change context (shown in User Management Logs display in a course)
12148:
12149: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12150:
12151: =back
12152:
12153: =item *
12154:
12155: modify_student_enrollment
12156:
12157: Change a students enrollment status in a class. The environment variable
12158: 'role.request.course' must be defined for this function to proceed.
12159:
12160: Inputs:
12161:
12162: =over 4
12163:
12164: =item $udom, students domain
12165:
12166: =item $uname, students name
12167:
12168: =item $uid, students user id
12169:
12170: =item $first, students first name
12171:
12172: =item $middle
12173:
12174: =item $last
12175:
12176: =item $gene
12177:
12178: =item $usec
12179:
12180: =item $end
12181:
12182: =item $start
12183:
12184: =item $type
12185:
12186: =item $locktype
12187:
12188: =item $cid
12189:
12190: =item $selfenroll
12191:
12192: =item $context
12193:
12194: =back
12195:
12196:
12197: =item *
12198:
12199: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12200: custom role; give a custom role to a user for the level given by URL. Specify
12201: name and domain of role author, and role name
12202:
12203: =item *
12204:
12205: revokerole($udom,$uname,$url,$role) : revoke a role for url
12206:
12207: =item *
12208:
12209: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12210:
12211: =back
12212:
12213: =head2 Course Infomation
12214:
12215: =over 4
12216:
12217: =item *
12218:
12219: coursedescription($courseid,$options) : returns a hash of information about the
12220: specified course id, including all environment settings for the
12221: course, the description of the course will be in the hash under the
12222: key 'description'
12223:
12224: $options is an optional parameter that if supplied is a hash reference that controls
12225: what how this function works. It has the following key/values:
12226:
12227: =over 4
12228:
12229: =item freshen_cache
12230:
12231: If defined, and the environment cache for the course is valid, it is
12232: returned in the returned hash.
12233:
12234: =item one_time
12235:
12236: If defined, the last cache time is set to _now_
12237:
12238: =item user
12239:
12240: If defined, the supplied username is used instead of the current user.
12241:
12242:
12243: =back
12244:
12245: =item *
12246:
12247: resdata($name,$domain,$type,@which) : request for current parameter
12248: setting for a specific $type, where $type is either 'course' or 'user',
12249: @what should be a list of parameters to ask about. This routine caches
12250: answers for 5 minutes.
12251:
12252: =item *
12253:
12254: get_courseresdata($courseid, $domain) : dump the entire course resource
12255: data base, returning a hash that is keyed by the resource name and has
12256: values that are the resource value. I believe that the timestamps and
12257: versions are also returned.
12258:
12259:
12260: =back
12261:
12262: =head2 Course Modification
12263:
12264: =over 4
12265:
12266: =item *
12267:
12268: writecoursepref($courseid,%prefs) : write preferences (environment
12269: database) for a course
12270:
12271: =item *
12272:
12273: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12274:
12275: =item *
12276:
12277: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12278:
12279: =item *
12280:
12281: is_course($courseid), is_course($cdom, $cnum)
12282:
12283: Accepts either a combined $courseid (in the form of domain_courseid) or the
12284: two component version $cdom, $cnum. It checks if the specified course exists.
12285:
12286: Returns:
12287: undef if the course doesn't exist, otherwise
12288: in scalar context the combined courseid.
12289: in list context the two components of the course identifier, domain and
12290: courseid.
12291:
12292: =back
12293:
12294: =head2 Resource Subroutines
12295:
12296: =over 4
12297:
12298: =item *
12299:
12300: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12301:
12302: =item *
12303:
12304: repcopy($filename) : subscribes to the requested file, and attempts to
12305: replicate from the owning library server, Might return
12306: 'unavailable', 'not_found', 'forbidden', 'ok', or
12307: 'bad_request', also attempts to grab the metadata for the
12308: resource. Expects the local filesystem pathname
12309: (/home/httpd/html/res/....)
12310:
12311: =back
12312:
12313: =head2 Resource Information
12314:
12315: =over 4
12316:
12317: =item *
12318:
12319: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12320: a vairety of different possible values, $varname should be a request
12321: string, and the other parameters can be used to specify who and what
12322: one is asking about.
12323:
12324: Possible values for $varname are environment.lastname (or other item
12325: from the envirnment hash), user.name (or someother aspect about the
12326: user), resource.0.maxtries (or some other part and parameter of a
12327: resource)
12328:
12329: =item *
12330:
12331: directcondval($number) : get current value of a condition; reads from a state
12332: string
12333:
12334: =item *
12335:
12336: condval($condidx) : value of condition index based on state
12337:
12338: =item *
12339:
12340: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12341: resource's metadata, $what should be either a specific key, or either
12342: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12343: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12344:
12345: this function automatically caches all requests
12346:
12347: =item *
12348:
12349: metadata_query($query,$custom,$customshow) : make a metadata query against the
12350: network of library servers; returns file handle of where SQL and regex results
12351: will be stored for query
12352:
12353: =item *
12354:
12355: symbread($filename) : return symbolic list entry (filename argument optional);
12356: returns the data handle
12357:
12358: =item *
12359:
12360: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12361: and is a possible symb for the URL in $thisfn, and if is an encrypted
12362: resource that the user accessed using /enc/ returns a 1 on success, 0
12363: on failure, user must be in a course, as it assumes the existence of
12364: the course initial hash, and uses $env('request.course.id'}. The third
12365: arg is an optional reference to a scalar. If this arg is passed in the
12366: call to symbverify, it will be set to 1 if the symb has been set to be
12367: encrypted; otherwise it will be null.
12368:
12369: =item *
12370:
12371: symbclean($symb) : removes versions numbers from a symb, returns the
12372: cleaned symb
12373:
12374: =item *
12375:
12376: is_on_map($uri) : checks if the $uri is somewhere on the current
12377: course map, user must be in a course for it to work.
12378:
12379: =item *
12380:
12381: numval($salt) : return random seed value (addend for rndseed)
12382:
12383: =item *
12384:
12385: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12386: a random seed, all arguments are optional, if they aren't sent it uses the
12387: environment to derive them. Note: if symb isn't sent and it can't get one
12388: from &symbread it will use the current time as its return value
12389:
12390: =item *
12391:
12392: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12393: unfakeable, receipt
12394:
12395: =item *
12396:
12397: receipt() : API to ireceipt working off of env values; given out to users
12398:
12399: =item *
12400:
12401: countacc($url) : count the number of accesses to a given URL
12402:
12403: =item *
12404:
12405: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12406:
12407: =item *
12408:
12409: checkin($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 $tcrsid)
12410:
12411: =item *
12412:
12413: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12414:
12415: =item *
12416:
12417: devalidate($symb) : devalidate temporary spreadsheet calculations,
12418: forcing spreadsheet to reevaluate the resource scores next time.
12419:
12420: =back
12421:
12422: =head2 Storing/Retreiving Data
12423:
12424: =over 4
12425:
12426: =item *
12427:
12428: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12429: for this url; hashref needs to be given and should be a \%hashname; the
12430: remaining args aren't required and if they aren't passed or are '' they will
12431: be derived from the env
12432:
12433: =item *
12434:
12435: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12436: uses critical subroutine
12437:
12438: =item *
12439:
12440: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12441: all args are optional
12442:
12443: =item *
12444:
12445: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12446: dumps the complete (or key matching regexp) namespace into a hash
12447: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12448: normally &store()ed into
12449:
12450: $range should be either an integer '100' (give me the first 100
12451: matching records)
12452: or be two integers sperated by a - with no spaces
12453: '30-50' (give me the 30th through the 50th matching
12454: records)
12455:
12456:
12457: =item *
12458:
12459: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12460: replaces a &store() version of data with a replacement set of data
12461: for a particular resource in a namespace passed in the $storehash hash
12462: reference
12463:
12464: =item *
12465:
12466: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12467: works very similar to store/cstore, but all data is stored in a
12468: temporary location and can be reset using tmpreset, $storehash should
12469: be a hash reference, returns nothing on success
12470:
12471: =item *
12472:
12473: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12474: similar to restore, but all data is stored in a temporary location and
12475: can be reset using tmpreset. Returns a hash of values on success,
12476: error string otherwise.
12477:
12478: =item *
12479:
12480: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12481: deltes all keys for $symb form the temporary storage hash.
12482:
12483: =item *
12484:
12485: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12486: reference filled in from namesp ($udom and $uname are optional)
12487:
12488: =item *
12489:
12490: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12491: namesp ($udom and $uname are optional)
12492:
12493: =item *
12494:
12495: dump($namespace,$udom,$uname,$regexp,$range) :
12496: dumps the complete (or key matching regexp) namespace into a hash
12497: ($udom, $uname, $regexp, $range are optional)
12498:
12499: $range should be either an integer '100' (give me the first 100
12500: matching records)
12501: or be two integers sperated by a - with no spaces
12502: '30-50' (give me the 30th through the 50th matching
12503: records)
12504: =item *
12505:
12506: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12507: $store can be a scalar, an array reference, or if the amount to be
12508: incremented is > 1, a hash reference.
12509:
12510: ($udom and $uname are optional)
12511:
12512: =item *
12513:
12514: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12515: ($udom and $uname are optional)
12516:
12517: =item *
12518:
12519: cput($namespace,$storehash,$udom,$uname) : critical put
12520: ($udom and $uname are optional)
12521:
12522: =item *
12523:
12524: newput($namespace,$storehash,$udom,$uname) :
12525:
12526: Attempts to store the items in the $storehash, but only if they don't
12527: currently exist, if this succeeds you can be certain that you have
12528: successfully created a new key value pair in the $namespace db.
12529:
12530:
12531: Args:
12532: $namespace: name of database to store values to
12533: $storehash: hashref to store to the db
12534: $udom: (optional) domain of user containing the db
12535: $uname: (optional) name of user caontaining the db
12536:
12537: Returns:
12538: 'ok' -> succeeded in storing all keys of $storehash
12539: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12540: least <key> already existed in the db (other
12541: requested keys may also already exist)
12542: 'error: <msg>' -> unable to tie the DB or other error occurred
12543: 'con_lost' -> unable to contact request server
12544: 'refused' -> action was not allowed by remote machine
12545:
12546:
12547: =item *
12548:
12549: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12550: reference filled in from namesp (encrypts the return communication)
12551: ($udom and $uname are optional)
12552:
12553: =item *
12554:
12555: log($udom,$name,$home,$message) : write to permanent log for user; use
12556: critical subroutine
12557:
12558: =item *
12559:
12560: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12561: array reference filled in from namespace found in domain level on either
12562: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12563:
12564: =item *
12565:
12566: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12567: domain level either on specified domain server ($uhome) or primary domain
12568: server ($udom and $uhome are optional)
12569:
12570: =item *
12571:
12572: get_domain_defaults($target_domain) : returns hash with defaults for
12573: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12574: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12575: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12576: Values are retrieved from cache (if current), or from domain's configuration.db
12577: (if available), or lastly from values in lonTabs/dns_domain,tab,
12578: or lonTabs/domain.tab.
12579:
12580: %domdefaults = &get_auth_defaults($target_domain);
12581:
12582: =back
12583:
12584: =head2 Network Status Functions
12585:
12586: =over 4
12587:
12588: =item *
12589:
12590: dirlist() : return directory list based on URI (first arg).
12591:
12592: Inputs: 1 required, 5 optional.
12593:
12594: =over
12595:
12596: =item
12597: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12598:
12599: =item
12600: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12601:
12602: =item
12603: $username - username of user/course to be listed. Extracted from $uri if absent.
12604:
12605: =item
12606: $getpropath - boolean: 1 if prepend path using &propath().
12607:
12608: =item
12609: $getuserdir - boolean: 1 if prepend path for "userfiles".
12610:
12611: =item
12612: $alternateRoot - path to prepend in place of path from $uri.
12613:
12614: =back
12615:
12616: Returns: Array of up to two items.
12617:
12618: =over
12619:
12620: a reference to an array of files/subdirectories
12621:
12622: =over
12623:
12624: Each element in the array of files/subdirectories is a & separated list of
12625: item name and the result of running stat on the item. If dirlist was requested
12626: for a file instead of a directory, the item name will be ''. For a directory
12627: listing, if the item is a metadata file, the element will end &N&M
12628: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12629: default copyright set (1).
12630:
12631: =back
12632:
12633: a scalar containing error condition (if encountered).
12634:
12635: =over
12636:
12637: =item
12638: no_host (no homeserver identified for $username:$domain).
12639:
12640: =item
12641: no_such_host (server contacted for listing not identified as valid host).
12642:
12643: =item
12644: con_lost (connection to remote server failed).
12645:
12646: =item
12647: refused (invalid $username:$domain received on lond side).
12648:
12649: =item
12650: no_such_dir (directory at specified path on lond side does not exist).
12651:
12652: =item
12653: empty (directory at specified path on lond side is empty).
12654:
12655: =over
12656:
12657: This is currently not encountered because the &ls3, &ls2,
12658: &ls (_handler) routines on the lond side do not filter out
12659: . and .. from a directory listing.
12660:
12661: =back
12662:
12663: =back
12664:
12665: =back
12666:
12667: =item *
12668:
12669: spareserver() : find server with least workload from spare.tab
12670:
12671:
12672: =item *
12673:
12674: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12675: if there is no corresponding loncapa host.
12676:
12677: =back
12678:
12679:
12680: =head2 Apache Request
12681:
12682: =over 4
12683:
12684: =item *
12685:
12686: ssi($url,%hash) : server side include, does a complete request cycle on url to
12687: localhost, posts hash
12688:
12689: =back
12690:
12691: =head2 Data to String to Data
12692:
12693: =over 4
12694:
12695: =item *
12696:
12697: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12698: and '&' separators, supports elements that are arrayrefs and hashrefs
12699:
12700: =item *
12701:
12702: hashref2str($hashref) : convert a hashref into a string complete with
12703: escaping and '=' and '&' separators, supports elements that are
12704: arrayrefs and hashrefs
12705:
12706: =item *
12707:
12708: arrayref2str($arrayref) : convert an arrayref into a string complete
12709: with escaping and '&' separators, supports elements that are arrayrefs
12710: and hashrefs
12711:
12712: =item *
12713:
12714: str2hash($string) : convert string to hash using unescaping and
12715: splitting on '=' and '&', supports elements that are arrayrefs and
12716: hashrefs
12717:
12718: =item *
12719:
12720: str2array($string) : convert string to hash using unescaping and
12721: splitting on '&', supports elements that are arrayrefs and hashrefs
12722:
12723: =back
12724:
12725: =head2 Logging Routines
12726:
12727:
12728: These routines allow one to make log messages in the lonnet.log and
12729: lonnet.perm logfiles.
12730:
12731: =over 4
12732:
12733: =item *
12734:
12735: logtouch() : make sure the logfile, lonnet.log, exists
12736:
12737: =item *
12738:
12739: logthis() : append message to the normal lonnet.log file, it gets
12740: preiodically rolled over and deleted.
12741:
12742: =item *
12743:
12744: logperm() : append a permanent message to lonnet.perm.log, this log
12745: file never gets deleted by any automated portion of the system, only
12746: messages of critical importance should go in here.
12747:
12748:
12749: =back
12750:
12751: =head2 General File Helper Routines
12752:
12753: =over 4
12754:
12755: =item *
12756:
12757: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
12758: (a) files in /uploaded
12759: (i) If a local copy of the file exists -
12760: compares modification date of local copy with last-modified date for
12761: definitive version stored on home server for course. If local copy is
12762: stale, requests a new version from the home server and stores it.
12763: If the original has been removed from the home server, then local copy
12764: is unlinked.
12765: (ii) If local copy does not exist -
12766: requests the file from the home server and stores it.
12767:
12768: If $caller is 'uploadrep':
12769: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
12770: for request for files originally uploaded via DOCS.
12771: - returns 'ok' if fresh local copy now available, -1 otherwise.
12772:
12773: Otherwise:
12774: This indicates a call from the content generation phase of the request.
12775: - returns the entire contents of the file or -1.
12776:
12777: (b) files in /res
12778: - returns the entire contents of a file or -1;
12779: it properly subscribes to and replicates the file if neccessary.
12780:
12781:
12782: =item *
12783:
12784: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
12785: reference
12786:
12787: returns either a stat() list of data about the file or an empty list
12788: if the file doesn't exist or couldn't find out about it (connection
12789: problems or user unknown)
12790:
12791: =item *
12792:
12793: filelocation($dir,$file) : returns file system location of a file
12794: based on URI; meant to be "fairly clean" absolute reference, $dir is a
12795: directory that relative $file lookups are to looked in ($dir of /a/dir
12796: and a file of ../bob will become /a/bob)
12797:
12798: =item *
12799:
12800: hreflocation($dir,$file) : returns file system location or a URL; same as
12801: filelocation except for hrefs
12802:
12803: =item *
12804:
12805: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
12806:
12807: =back
12808:
12809: =head2 Usererfile file routines (/uploaded*)
12810:
12811: =over 4
12812:
12813: =item *
12814:
12815: userfileupload(): main rotine for putting a file in a user or course's
12816: filespace, arguments are,
12817:
12818: formname - required - this is the name of the element in $env where the
12819: filename, and the contents of the file to create/modifed exist
12820: the filename is in $env{'form.'.$formname.'.filename'} and the
12821: contents of the file is located in $env{'form.'.$formname}
12822: context - if coursedoc, store the file in the course of the active role
12823: of the current user;
12824: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
12825: if 'canceloverwrite': delete file in tmp/overwrites directory
12826: subdir - required - subdirectory to put the file in under ../userfiles/
12827: if undefined, it will be placed in "unknown"
12828:
12829: (This routine calls clean_filename() to remove any dangerous
12830: characters from the filename, and then calls finuserfileupload() to
12831: complete the transaction)
12832:
12833: returns either the url of the uploaded file (/uploaded/....) if successful
12834: and /adm/notfound.html if unsuccessful
12835:
12836: =item *
12837:
12838: clean_filename(): routine for cleaing a filename up for storage in
12839: userfile space, argument is:
12840:
12841: filename - proposed filename
12842:
12843: returns: the new clean filename
12844:
12845: =item *
12846:
12847: finishuserfileupload(): routine that creates and sends the file to
12848: userspace, probably shouldn't be called directly
12849:
12850: docuname: username or courseid of destination for the file
12851: docudom: domain of user/course of destination for the file
12852: formname: same as for userfileupload()
12853: fname: filename (including subdirectories) for the file
12854: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
12855: allfiles: reference to hash used to store objects found by parser
12856: codebase: reference to hash used for codebases of java objects found by parser
12857: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
12858: thumbheight: height (pixels) of thumbnail to be created for uploaded image
12859: resizewidth: width to be used to resize image using resizeImage from ImageMagick
12860: resizeheight: height to be used to resize image using resizeImage from ImageMagick
12861: context: if 'overwrite', will move the uploaded file from its temporary location to
12862: userfiles to facilitate overwriting a previously uploaded file with same name.
12863: mimetype: reference to scalar to accommodate mime type determined
12864: from File::MMagic if $parser = parse.
12865:
12866: returns either the url of the uploaded file (/uploaded/....) if successful
12867: and /adm/notfound.html if unsuccessful (or an error message if context
12868: was 'overwrite').
12869:
12870:
12871: =item *
12872:
12873: renameuserfile(): renames an existing userfile to a new name
12874:
12875: Args:
12876: docuname: username or courseid of destination for the file
12877: docudom: domain of user/course of destination for the file
12878: old: current file name (including any subdirs under userfiles)
12879: new: desired file name (including any subdirs under userfiles)
12880:
12881: =item *
12882:
12883: mkdiruserfile(): creates a directory is a userfiles dir
12884:
12885: Args:
12886: docuname: username or courseid of destination for the file
12887: docudom: domain of user/course of destination for the file
12888: dir: dir to create (including any subdirs under userfiles)
12889:
12890: =item *
12891:
12892: removeuserfile(): removes a file that exists in userfiles
12893:
12894: Args:
12895: docuname: username or courseid of destination for the file
12896: docudom: domain of user/course of destination for the file
12897: fname: filname to delete (including any subdirs under userfiles)
12898:
12899: =item *
12900:
12901: removeuploadedurl(): convience function for removeuserfile()
12902:
12903: Args:
12904: url: a full /uploaded/... url to delete
12905:
12906: =item *
12907:
12908: get_portfile_permissions():
12909: Args:
12910: domain: domain of user or course contain the portfolio files
12911: user: name of user or num of course contain the portfolio files
12912: Returns:
12913: hashref of a dump of the proper file_permissions.db
12914:
12915:
12916: =item *
12917:
12918: get_access_controls():
12919:
12920: Args:
12921: current_permissions: the hash ref returned from get_portfile_permissions()
12922: group: (optional) the group you want the files associated with
12923: file: (optional) the file you want access info on
12924:
12925: Returns:
12926: a hash (keys are file names) of hashes containing
12927: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
12928: values are XML containing access control settings (see below)
12929:
12930: Internal notes:
12931:
12932: access controls are stored in file_permissions.db as key=value pairs.
12933: key -> path to file/file_name\0uniqueID:scope_end_start
12934: where scope -> public,guest,course,group,domains or users.
12935: end -> UNIX time for end of access (0 -> no end date)
12936: start -> UNIX time for start of access
12937:
12938: value -> XML description of access control
12939: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
12940: <start></start>
12941: <end></end>
12942:
12943: <password></password> for scope type = guest
12944:
12945: <domain></domain> for scope type = course or group
12946: <number></number>
12947: <roles id="">
12948: <role></role>
12949: <access></access>
12950: <section></section>
12951: <group></group>
12952: </roles>
12953:
12954: <dom></dom> for scope type = domains
12955:
12956: <users> for scope type = users
12957: <user>
12958: <uname></uname>
12959: <udom></udom>
12960: </user>
12961: </users>
12962: </scope>
12963:
12964: Access data is also aggregated for each file in an additional key=value pair:
12965: key -> path to file/file_name\0accesscontrol
12966: value -> reference to hash
12967: hash contains key = value pairs
12968: where key = uniqueID:scope_end_start
12969: value = UNIX time record was last updated
12970:
12971: Used to improve speed of look-ups of access controls for each file.
12972:
12973: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
12974:
12975: modify_access_controls():
12976:
12977: Modifies access controls for a portfolio file
12978: Args
12979: 1. file name
12980: 2. reference to hash of required changes,
12981: 3. domain
12982: 4. username
12983: where domain,username are the domain of the portfolio owner
12984: (either a user or a course)
12985:
12986: Returns:
12987: 1. result of additions or updates ('ok' or 'error', with error message).
12988: 2. result of deletions ('ok' or 'error', with error message).
12989: 3. reference to hash of any new or updated access controls.
12990: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
12991: key = integer (inbound ID)
12992: value = uniqueID
12993:
12994: =back
12995:
12996: =head2 HTTP Helper Routines
12997:
12998: =over 4
12999:
13000: =item *
13001:
13002: escape() : unpack non-word characters into CGI-compatible hex codes
13003:
13004: =item *
13005:
13006: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13007:
13008: =back
13009:
13010: =head1 PRIVATE SUBROUTINES
13011:
13012: =head2 Underlying communication routines (Shouldn't call)
13013:
13014: =over 4
13015:
13016: =item *
13017:
13018: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13019:
13020: =item *
13021:
13022: reply() : uses subreply to send a message to remote machine, logs all failures
13023:
13024: =item *
13025:
13026: critical() : passes a critical message to another server; if cannot
13027: get through then place message in connection buffer directory and
13028: returns con_delayed, if incapable of saving message, returns
13029: con_failed
13030:
13031: =item *
13032:
13033: reconlonc() : tries to reconnect lonc client processes.
13034:
13035: =back
13036:
13037: =head2 Resource Access Logging
13038:
13039: =over 4
13040:
13041: =item *
13042:
13043: flushcourselogs() : flush (save) buffer logs and access logs
13044:
13045: =item *
13046:
13047: courselog($what) : save message for course in hash
13048:
13049: =item *
13050:
13051: courseacclog($what) : save message for course using &courselog(). Perform
13052: special processing for specific resource types (problems, exams, quizzes, etc).
13053:
13054: =item *
13055:
13056: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13057: as a PerlChildExitHandler
13058:
13059: =back
13060:
13061: =head2 Other
13062:
13063: =over 4
13064:
13065: =item *
13066:
13067: symblist($mapname,%newhash) : update symbolic storage links
13068:
13069: =back
13070:
13071: =cut
13072:
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