1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1180 2012/07/17 14:49:32 droeschl Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use LONCAPA qw(:DEFAULT :match);
100: use LONCAPA::Configuration;
101: use LONCAPA::lonmetadata;
102: use LONCAPA::Lond;
103:
104: use File::Copy;
105:
106: my $readit;
107: my $max_connection_retries = 10; # Or some such value.
108:
109: require Exporter;
110:
111: our @ISA = qw (Exporter);
112: our @EXPORT = qw(%env);
113:
114:
115: # --------------------------------------------------------------------- Logging
116: {
117: my $logid;
118: sub instructor_log {
119: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
120: if (($cnum eq '') || ($cdom eq '')) {
121: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
122: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
123: }
124: $logid++;
125: my $now = time();
126: my $id=$now.'00000'.$$.'00000'.$logid;
127: return &Apache::lonnet::put('nohist_'.$hash_name,
128: { $id => {
129: 'exe_uname' => $env{'user.name'},
130: 'exe_udom' => $env{'user.domain'},
131: 'exe_time' => $now,
132: 'exe_ip' => $ENV{'REMOTE_ADDR'},
133: 'delflag' => $delflag,
134: 'logentry' => $storehash,
135: 'uname' => $uname,
136: 'udom' => $udom,
137: }
138: },$cdom,$cnum);
139: }
140: }
141:
142: sub logtouch {
143: my $execdir=$perlvar{'lonDaemons'};
144: unless (-e "$execdir/logs/lonnet.log") {
145: open(my $fh,">>$execdir/logs/lonnet.log");
146: close $fh;
147: }
148: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
149: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
150: }
151:
152: sub logthis {
153: my $message=shift;
154: my $execdir=$perlvar{'lonDaemons'};
155: my $now=time;
156: my $local=localtime($now);
157: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
158: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
159: print $fh $logstring;
160: close($fh);
161: }
162: return 1;
163: }
164:
165: sub logperm {
166: my $message=shift;
167: my $execdir=$perlvar{'lonDaemons'};
168: my $now=time;
169: my $local=localtime($now);
170: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
171: print $fh "$now:$message:$local\n";
172: close($fh);
173: }
174: return 1;
175: }
176:
177: sub create_connection {
178: my ($hostname,$lonid) = @_;
179: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
180: Type => SOCK_STREAM,
181: Timeout => 10);
182: return 0 if (!$client);
183: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
184: my $result = <$client>;
185: chomp($result);
186: return 1 if ($result eq 'done');
187: return 0;
188: }
189:
190: sub get_server_timezone {
191: my ($cnum,$cdom) = @_;
192: my $home=&homeserver($cnum,$cdom);
193: if ($home ne 'no_host') {
194: my $cachetime = 24*3600;
195: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
196: if (defined($cached)) {
197: return $timezone;
198: } else {
199: my $timezone = &reply('servertimezone',$home);
200: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
201: }
202: }
203: }
204:
205: sub get_server_distarch {
206: my ($lonhost,$ignore_cache) = @_;
207: if (defined($lonhost)) {
208: if (!defined(&hostname($lonhost))) {
209: return;
210: }
211: my $cachetime = 12*3600;
212: if (!$ignore_cache) {
213: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
214: if (defined($cached)) {
215: return $distarch;
216: }
217: }
218: my $rep = &reply('serverdistarch',$lonhost);
219: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
220: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
221: $rep eq '') {
222: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
223: }
224: }
225: return;
226: }
227:
228: sub get_server_loncaparev {
229: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
230: if (defined($lonhost)) {
231: if (!defined(&hostname($lonhost))) {
232: undef($lonhost);
233: }
234: }
235: if (!defined($lonhost)) {
236: if (defined(&domain($dom,'primary'))) {
237: $lonhost=&domain($dom,'primary');
238: if ($lonhost eq 'no_host') {
239: undef($lonhost);
240: }
241: }
242: }
243: if (defined($lonhost)) {
244: my $cachetime = 12*3600;
245: if (!$ignore_cache) {
246: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
247: if (defined($cached)) {
248: return $loncaparev;
249: }
250: }
251: my ($answer,$loncaparev);
252: my @ids=¤t_machine_ids();
253: if (grep(/^\Q$lonhost\E$/,@ids)) {
254: $answer = $perlvar{'lonVersion'};
255: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
256: $loncaparev = $1;
257: }
258: } else {
259: $answer = &reply('serverloncaparev',$lonhost);
260: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
261: if ($caller eq 'loncron') {
262: my $ua=new LWP::UserAgent;
263: $ua->timeout(4);
264: my $protocol = $protocol{$lonhost};
265: $protocol = 'http' if ($protocol ne 'https');
266: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
267: my $request=new HTTP::Request('GET',$url);
268: my $response=$ua->request($request);
269: unless ($response->is_error()) {
270: my $content = $response->content;
271: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
272: $loncaparev = $1;
273: }
274: }
275: } else {
276: $loncaparev = $loncaparevs{$lonhost};
277: }
278: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
279: $loncaparev = $1;
280: }
281: }
282: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
283: }
284: }
285:
286: sub get_server_homeID {
287: my ($hostname,$ignore_cache,$caller) = @_;
288: unless ($ignore_cache) {
289: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
290: if (defined($cached)) {
291: return $serverhomeID;
292: }
293: }
294: my $cachetime = 12*3600;
295: my $serverhomeID;
296: if ($caller eq 'loncron') {
297: my @machine_ids = &machine_ids($hostname);
298: foreach my $id (@machine_ids) {
299: my $response = &reply('serverhomeID',$id);
300: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
301: $serverhomeID = $response;
302: last;
303: }
304: }
305: if ($serverhomeID eq '') {
306: $serverhomeID = $machine_ids[-1];
307: }
308: } else {
309: $serverhomeID = $serverhomeIDs{$hostname};
310: }
311: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
312: }
313:
314: sub get_remote_globals {
315: my ($lonhost,$whathash,$ignore_cache) = @_;
316: my ($result,%returnhash,%whatneeded);
317: if (ref($whathash) eq 'HASH') {
318: foreach my $what (sort(keys(%{$whathash}))) {
319: my $hashid = $lonhost.'-'.$what;
320: my ($response,$cached);
321: unless ($ignore_cache) {
322: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
323: }
324: if (defined($cached)) {
325: $returnhash{$what} = $response;
326: } else {
327: $whatneeded{$what} = 1;
328: }
329: }
330: if (keys(%whatneeded) == 0) {
331: $result = 'ok';
332: } else {
333: my $requested = &freeze_escape(\%whatneeded);
334: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
335: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
336: ($rep eq 'unknown_cmd')) {
337: $result = $rep;
338: } else {
339: $result = 'ok';
340: my @pairs=split(/\&/,$rep);
341: foreach my $item (@pairs) {
342: my ($key,$value)=split(/=/,$item,2);
343: my $what = &unescape($key);
344: my $hashid = $lonhost.'-'.$what;
345: $returnhash{$what}=&thaw_unescape($value);
346: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
347: }
348: }
349: }
350: }
351: return ($result,\%returnhash);
352: }
353:
354: sub remote_devalidate_cache {
355: my ($lonhost,$name,$id) = @_;
356: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
357: return $response;
358: }
359:
360: # -------------------------------------------------- Non-critical communication
361: sub subreply {
362: my ($cmd,$server)=@_;
363: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
364: #
365: # With loncnew process trimming, there's a timing hole between lonc server
366: # process exit and the master server picking up the listen on the AF_UNIX
367: # socket. In that time interval, a lock file will exist:
368:
369: my $lockfile=$peerfile.".lock";
370: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
371: sleep(1);
372: }
373: # At this point, either a loncnew parent is listening or an old lonc
374: # or loncnew child is listening so we can connect or everything's dead.
375: #
376: # We'll give the connection a few tries before abandoning it. If
377: # connection is not possible, we'll con_lost back to the client.
378: #
379: my $client;
380: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
381: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
382: Type => SOCK_STREAM,
383: Timeout => 10);
384: if ($client) {
385: last; # Connected!
386: } else {
387: &create_connection(&hostname($server),$server);
388: }
389: sleep(1); # Try again later if failed connection.
390: }
391: my $answer;
392: if ($client) {
393: print $client "sethost:$server:$cmd\n";
394: $answer=<$client>;
395: if (!$answer) { $answer="con_lost"; }
396: chomp($answer);
397: } else {
398: $answer = 'con_lost'; # Failed connection.
399: }
400: return $answer;
401: }
402:
403: sub reply {
404: my ($cmd,$server)=@_;
405: unless (defined(&hostname($server))) { return 'no_such_host'; }
406: my $answer=subreply($cmd,$server);
407: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
408: &logthis("<font color=\"blue\">WARNING:".
409: " $cmd to $server returned $answer</font>");
410: }
411: return $answer;
412: }
413:
414: # ----------------------------------------------------------- Send USR1 to lonc
415:
416: sub reconlonc {
417: my ($lonid) = @_;
418: my $hostname = &hostname($lonid);
419: if ($lonid) {
420: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
421: if ($hostname && -e $peerfile) {
422: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
423: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
424: Type => SOCK_STREAM,
425: Timeout => 10);
426: if ($client) {
427: print $client ("reset_retries\n");
428: my $answer=<$client>;
429: #reset just this one.
430: }
431: }
432: return;
433: }
434:
435: &logthis("Trying to reconnect lonc");
436: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
437: if (open(my $fh,"<$loncfile")) {
438: my $loncpid=<$fh>;
439: chomp($loncpid);
440: if (kill 0 => $loncpid) {
441: &logthis("lonc at pid $loncpid responding, sending USR1");
442: kill USR1 => $loncpid;
443: sleep 1;
444: } else {
445: &logthis(
446: "<font color=\"blue\">WARNING:".
447: " lonc at pid $loncpid not responding, giving up</font>");
448: }
449: } else {
450: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
451: }
452: }
453:
454: # ------------------------------------------------------ Critical communication
455:
456: sub critical {
457: my ($cmd,$server)=@_;
458: unless (&hostname($server)) {
459: &logthis("<font color=\"blue\">WARNING:".
460: " Critical message to unknown server ($server)</font>");
461: return 'no_such_host';
462: }
463: my $answer=reply($cmd,$server);
464: if ($answer eq 'con_lost') {
465: &reconlonc("$perlvar{'lonSockDir'}/$server");
466: my $answer=reply($cmd,$server);
467: if ($answer eq 'con_lost') {
468: my $now=time;
469: my $middlename=$cmd;
470: $middlename=substr($middlename,0,16);
471: $middlename=~s/\W//g;
472: my $dfilename=
473: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
474: $dumpcount++;
475: {
476: my $dfh;
477: if (open($dfh,">$dfilename")) {
478: print $dfh "$cmd\n";
479: close($dfh);
480: }
481: }
482: sleep 2;
483: my $wcmd='';
484: {
485: my $dfh;
486: if (open($dfh,"<$dfilename")) {
487: $wcmd=<$dfh>;
488: close($dfh);
489: }
490: }
491: chomp($wcmd);
492: if ($wcmd eq $cmd) {
493: &logthis("<font color=\"blue\">WARNING: ".
494: "Connection buffer $dfilename: $cmd</font>");
495: &logperm("D:$server:$cmd");
496: return 'con_delayed';
497: } else {
498: &logthis("<font color=\"red\">CRITICAL:"
499: ." Critical connection failed: $server $cmd</font>");
500: &logperm("F:$server:$cmd");
501: return 'con_failed';
502: }
503: }
504: }
505: return $answer;
506: }
507:
508: # ------------------------------------------- check if return value is an error
509:
510: sub error {
511: my ($result) = @_;
512: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
513: if ($2 == 2) { return undef; }
514: return $1;
515: }
516: return undef;
517: }
518:
519: sub convert_and_load_session_env {
520: my ($lonidsdir,$handle)=@_;
521: my @profile;
522: {
523: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
524: if (!$opened) {
525: return 0;
526: }
527: flock($idf,LOCK_SH);
528: @profile=<$idf>;
529: close($idf);
530: }
531: my %temp_env;
532: foreach my $line (@profile) {
533: if ($line !~ m/=/) {
534: return 0;
535: }
536: chomp($line);
537: my ($envname,$envvalue)=split(/=/,$line,2);
538: $temp_env{&unescape($envname)} = &unescape($envvalue);
539: }
540: unlink("$lonidsdir/$handle.id");
541: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
542: 0640)) {
543: %disk_env = %temp_env;
544: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
545: untie(%disk_env);
546: }
547: return 1;
548: }
549:
550: # ------------------------------------------- Transfer profile into environment
551: my $env_loaded;
552: sub transfer_profile_to_env {
553: my ($lonidsdir,$handle,$force_transfer) = @_;
554: if (!$force_transfer && $env_loaded) { return; }
555:
556: if (!defined($lonidsdir)) {
557: $lonidsdir = $perlvar{'lonIDsDir'};
558: }
559: if (!defined($handle)) {
560: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
561: }
562:
563: my $convert;
564: {
565: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
566: if (!$opened) {
567: return;
568: }
569: flock($idf,LOCK_SH);
570: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
571: &GDBM_READER(),0640)) {
572: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
573: untie(%disk_env);
574: } else {
575: $convert = 1;
576: }
577: }
578: if ($convert) {
579: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
580: &logthis("Failed to load session, or convert session.");
581: }
582: }
583:
584: my %remove;
585: while ( my $envname = each(%env) ) {
586: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
587: if ($time < time-300) {
588: $remove{$key}++;
589: }
590: }
591: }
592:
593: $env{'user.environment'} = "$lonidsdir/$handle.id";
594: $env_loaded=1;
595: foreach my $expired_key (keys(%remove)) {
596: &delenv($expired_key);
597: }
598: }
599:
600: # ---------------------------------------------------- Check for valid session
601: sub check_for_valid_session {
602: my ($r,$name) = @_;
603: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
604: if ($name eq '') {
605: $name = 'lonID';
606: }
607: my $lonid=$cookies{$name};
608: return undef if (!$lonid);
609:
610: my $handle=&LONCAPA::clean_handle($lonid->value);
611: my $lonidsdir;
612: if ($name eq 'lonDAV') {
613: $lonidsdir=$r->dir_config('lonDAVsessDir');
614: } else {
615: $lonidsdir=$r->dir_config('lonIDsDir');
616: }
617: return undef if (!-e "$lonidsdir/$handle.id");
618:
619: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
620: return undef if (!$opened);
621:
622: flock($idf,LOCK_SH);
623: my %disk_env;
624: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
625: &GDBM_READER(),0640)) {
626: return undef;
627: }
628:
629: if (!defined($disk_env{'user.name'})
630: || !defined($disk_env{'user.domain'})) {
631: return undef;
632: }
633: return $handle;
634: }
635:
636: sub timed_flock {
637: my ($file,$lock_type) = @_;
638: my $failed=0;
639: eval {
640: local $SIG{__DIE__}='DEFAULT';
641: local $SIG{ALRM}=sub {
642: $failed=1;
643: die("failed lock");
644: };
645: alarm(13);
646: flock($file,$lock_type);
647: alarm(0);
648: };
649: if ($failed) {
650: return undef;
651: } else {
652: return 1;
653: }
654: }
655:
656: # ---------------------------------------------------------- Append Environment
657:
658: sub appenv {
659: my ($newenv,$roles) = @_;
660: if (ref($newenv) eq 'HASH') {
661: foreach my $key (keys(%{$newenv})) {
662: my $refused = 0;
663: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
664: $refused = 1;
665: if (ref($roles) eq 'ARRAY') {
666: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
667: if (grep(/^\Q$role\E$/,@{$roles})) {
668: $refused = 0;
669: }
670: }
671: }
672: if ($refused) {
673: &logthis("<font color=\"blue\">WARNING: ".
674: "Attempt to modify environment ".$key." to ".$newenv->{$key}
675: .'</font>');
676: delete($newenv->{$key});
677: } else {
678: $env{$key}=$newenv->{$key};
679: }
680: }
681: my $opened = open(my $env_file,'+<',$env{'user.environment'});
682: if ($opened
683: && &timed_flock($env_file,LOCK_EX)
684: &&
685: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
686: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
687: while (my ($key,$value) = each(%{$newenv})) {
688: $disk_env{$key} = $value;
689: }
690: untie(%disk_env);
691: }
692: }
693: return 'ok';
694: }
695: # ----------------------------------------------------- Delete from Environment
696:
697: sub delenv {
698: my ($delthis,$regexp,$roles) = @_;
699: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
700: my $refused = 1;
701: if (ref($roles) eq 'ARRAY') {
702: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
703: if (grep(/^\Q$role\E$/,@{$roles})) {
704: $refused = 0;
705: }
706: }
707: if ($refused) {
708: &logthis("<font color=\"blue\">WARNING: ".
709: "Attempt to delete from environment ".$delthis);
710: return 'error';
711: }
712: }
713: my $opened = open(my $env_file,'+<',$env{'user.environment'});
714: if ($opened
715: && &timed_flock($env_file,LOCK_EX)
716: &&
717: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
718: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
719: foreach my $key (keys(%disk_env)) {
720: if ($regexp) {
721: if ($key=~/^$delthis/) {
722: delete($env{$key});
723: delete($disk_env{$key});
724: }
725: } else {
726: if ($key=~/^\Q$delthis\E/) {
727: delete($env{$key});
728: delete($disk_env{$key});
729: }
730: }
731: }
732: untie(%disk_env);
733: }
734: return 'ok';
735: }
736:
737: sub get_env_multiple {
738: my ($name) = @_;
739: my @values;
740: if (defined($env{$name})) {
741: # exists is it an array
742: if (ref($env{$name})) {
743: @values=@{ $env{$name} };
744: } else {
745: $values[0]=$env{$name};
746: }
747: }
748: return(@values);
749: }
750:
751: # ------------------------------------------------------------------- Locking
752:
753: sub set_lock {
754: my ($text)=@_;
755: $locknum++;
756: my $id=$$.'-'.$locknum;
757: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
758: 'session.lock.'.$id => $text});
759: return $id;
760: }
761:
762: sub get_locks {
763: my $num=0;
764: my %texts=();
765: foreach my $lock (split(/\,/,$env{'session.locks'})) {
766: if ($lock=~/\w/) {
767: $num++;
768: $texts{$lock}=$env{'session.lock.'.$lock};
769: }
770: }
771: return ($num,%texts);
772: }
773:
774: sub remove_lock {
775: my ($id)=@_;
776: my $newlocks='';
777: foreach my $lock (split(/\,/,$env{'session.locks'})) {
778: if (($lock=~/\w/) && ($lock ne $id)) {
779: $newlocks.=','.$lock;
780: }
781: }
782: &appenv({'session.locks' => $newlocks});
783: &delenv('session.lock.'.$id);
784: }
785:
786: sub remove_all_locks {
787: my $activelocks=$env{'session.locks'};
788: foreach my $lock (split(/\,/,$env{'session.locks'})) {
789: if ($lock=~/\w/) {
790: &remove_lock($lock);
791: }
792: }
793: }
794:
795:
796: # ------------------------------------------ Find out current server userload
797: sub userload {
798: my $numusers=0;
799: {
800: opendir(LONIDS,$perlvar{'lonIDsDir'});
801: my $filename;
802: my $curtime=time;
803: while ($filename=readdir(LONIDS)) {
804: next if ($filename eq '.' || $filename eq '..');
805: next if ($filename =~ /publicuser_\d+\.id/);
806: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
807: if ($curtime-$mtime < 1800) { $numusers++; }
808: }
809: closedir(LONIDS);
810: }
811: my $userloadpercent=0;
812: my $maxuserload=$perlvar{'lonUserLoadLim'};
813: if ($maxuserload) {
814: $userloadpercent=100*$numusers/$maxuserload;
815: }
816: $userloadpercent=sprintf("%.2f",$userloadpercent);
817: return $userloadpercent;
818: }
819:
820: # ------------------------------ Find server with least workload from spare.tab
821:
822: sub spareserver {
823: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
824: my $spare_server;
825: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
826: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
827: : $userloadpercent;
828: my ($uint_dom,$remotesessions);
829: if (($udom ne '') && (&domain($udom) ne '')) {
830: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
831: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
832: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
833: $remotesessions = $udomdefaults{'remotesessions'};
834: }
835: my $spareshash = &this_host_spares($udom);
836: if (ref($spareshash) eq 'HASH') {
837: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
838: foreach my $try_server (@{ $spareshash->{'primary'} }) {
839: if ($uint_dom) {
840: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
841: $try_server));
842: }
843: ($spare_server, $lowest_load) =
844: &compare_server_load($try_server, $spare_server, $lowest_load);
845: }
846: }
847:
848: my $found_server = ($spare_server ne '' && $lowest_load < 100);
849:
850: if (!$found_server) {
851: if (ref($spareshash->{'default'}) eq 'ARRAY') {
852: foreach my $try_server (@{ $spareshash->{'default'} }) {
853: if ($uint_dom) {
854: next unless (&spare_can_host($udom,$uint_dom,
855: $remotesessions,$try_server));
856: }
857: ($spare_server, $lowest_load) =
858: &compare_server_load($try_server, $spare_server, $lowest_load);
859: }
860: }
861: }
862: }
863:
864: if (!$want_server_name) {
865: my $protocol = 'http';
866: if ($protocol{$spare_server} eq 'https') {
867: $protocol = $protocol{$spare_server};
868: }
869: if (defined($spare_server)) {
870: my $hostname = &hostname($spare_server);
871: if (defined($hostname)) {
872: $spare_server = $protocol.'://'.$hostname;
873: }
874: }
875: }
876: return $spare_server;
877: }
878:
879: sub compare_server_load {
880: my ($try_server, $spare_server, $lowest_load) = @_;
881:
882: my $loadans = &reply('load', $try_server);
883: my $userloadans = &reply('userload',$try_server);
884:
885: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
886: return ($spare_server, $lowest_load); #didn't get a number from the server
887: }
888:
889: my $load;
890: if ($loadans =~ /\d/) {
891: if ($userloadans =~ /\d/) {
892: #both are numbers, pick the bigger one
893: $load = ($loadans > $userloadans) ? $loadans
894: : $userloadans;
895: } else {
896: $load = $loadans;
897: }
898: } else {
899: $load = $userloadans;
900: }
901:
902: if (($load =~ /\d/) && ($load < $lowest_load)) {
903: $spare_server = $try_server;
904: $lowest_load = $load;
905: }
906: return ($spare_server,$lowest_load);
907: }
908:
909: # --------------------------- ask offload servers if user already has a session
910: sub find_existing_session {
911: my ($udom,$uname) = @_;
912: my $spareshash = &this_host_spares($udom);
913: if (ref($spareshash) eq 'HASH') {
914: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
915: foreach my $try_server (@{ $spareshash->{'primary'} }) {
916: return $try_server if (&has_user_session($try_server, $udom, $uname));
917: }
918: }
919: if (ref($spareshash->{'default'}) eq 'ARRAY') {
920: foreach my $try_server (@{ $spareshash->{'default'} }) {
921: return $try_server if (&has_user_session($try_server, $udom, $uname));
922: }
923: }
924: }
925: return;
926: }
927:
928: # -------------------------------- ask if server already has a session for user
929: sub has_user_session {
930: my ($lonid,$udom,$uname) = @_;
931: my $result = &reply(join(':','userhassession',
932: map {&escape($_)} ($udom,$uname)),$lonid);
933: return 1 if ($result eq 'ok');
934:
935: return 0;
936: }
937:
938: # --------- determine least loaded server in a user's domain which allows login
939:
940: sub choose_server {
941: my ($udom,$checkloginvia) = @_;
942: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
943: my %servers = &get_servers($udom);
944: my $lowest_load = 30000;
945: my ($login_host,$hostname,$portal_path,$isredirect);
946: foreach my $lonhost (keys(%servers)) {
947: my $loginvia;
948: if ($checkloginvia) {
949: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
950: if ($loginvia) {
951: my ($server,$path) = split(/:/,$loginvia);
952: ($login_host, $lowest_load) =
953: &compare_server_load($server, $login_host, $lowest_load);
954: if ($login_host eq $server) {
955: $portal_path = $path;
956: $isredirect = 1;
957: }
958: } else {
959: ($login_host, $lowest_load) =
960: &compare_server_load($lonhost, $login_host, $lowest_load);
961: if ($login_host eq $lonhost) {
962: $portal_path = '';
963: $isredirect = '';
964: }
965: }
966: } else {
967: ($login_host, $lowest_load) =
968: &compare_server_load($lonhost, $login_host, $lowest_load);
969: }
970: }
971: if ($login_host ne '') {
972: $hostname = &hostname($login_host);
973: }
974: return ($login_host,$hostname,$portal_path,$isredirect);
975: }
976:
977: # --------------------------------------------- Try to change a user's password
978:
979: sub changepass {
980: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
981: $currentpass = &escape($currentpass);
982: $newpass = &escape($newpass);
983: my $lonhost = $perlvar{'lonHostID'};
984: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
985: $server);
986: if (! $answer) {
987: &logthis("No reply on password change request to $server ".
988: "by $uname in domain $udom.");
989: } elsif ($answer =~ "^ok") {
990: &logthis("$uname in $udom successfully changed their password ".
991: "on $server.");
992: } elsif ($answer =~ "^pwchange_failure") {
993: &logthis("$uname in $udom was unable to change their password ".
994: "on $server. The action was blocked by either lcpasswd ".
995: "or pwchange");
996: } elsif ($answer =~ "^non_authorized") {
997: &logthis("$uname in $udom did not get their password correct when ".
998: "attempting to change it on $server.");
999: } elsif ($answer =~ "^auth_mode_error") {
1000: &logthis("$uname in $udom attempted to change their password despite ".
1001: "not being locally or internally authenticated on $server.");
1002: } elsif ($answer =~ "^unknown_user") {
1003: &logthis("$uname in $udom attempted to change their password ".
1004: "on $server but were unable to because $server is not ".
1005: "their home server.");
1006: } elsif ($answer =~ "^refused") {
1007: &logthis("$server refused to change $uname in $udom password because ".
1008: "it was sent an unencrypted request to change the password.");
1009: } elsif ($answer =~ "invalid_client") {
1010: &logthis("$server refused to change $uname in $udom password because ".
1011: "it was a reset by e-mail originating from an invalid server.");
1012: }
1013: return $answer;
1014: }
1015:
1016: # ----------------------- Try to determine user's current authentication scheme
1017:
1018: sub queryauthenticate {
1019: my ($uname,$udom)=@_;
1020: my $uhome=&homeserver($uname,$udom);
1021: if (!$uhome) {
1022: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1023: return 'no_host';
1024: }
1025: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1026: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1027: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1028: }
1029: return $answer;
1030: }
1031:
1032: # --------- Try to authenticate user from domain's lib servers (first this one)
1033:
1034: sub authenticate {
1035: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1036: $upass=&escape($upass);
1037: $uname= &LONCAPA::clean_username($uname);
1038: my $uhome=&homeserver($uname,$udom,1);
1039: my $newhome;
1040: if ((!$uhome) || ($uhome eq 'no_host')) {
1041: # Maybe the machine was offline and only re-appeared again recently?
1042: &reconlonc();
1043: # One more
1044: $uhome=&homeserver($uname,$udom,1);
1045: if (($uhome eq 'no_host') && $checkdefauth) {
1046: if (defined(&domain($udom,'primary'))) {
1047: $newhome=&domain($udom,'primary');
1048: }
1049: if ($newhome ne '') {
1050: $uhome = $newhome;
1051: }
1052: }
1053: if ((!$uhome) || ($uhome eq 'no_host')) {
1054: &logthis("User $uname at $udom is unknown in authenticate");
1055: return 'no_host';
1056: }
1057: }
1058: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1059: if ($answer eq 'authorized') {
1060: if ($newhome) {
1061: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1062: return 'no_account_on_host';
1063: } else {
1064: &logthis("User $uname at $udom authorized by $uhome");
1065: return $uhome;
1066: }
1067: }
1068: if ($answer eq 'non_authorized') {
1069: &logthis("User $uname at $udom rejected by $uhome");
1070: return 'no_host';
1071: }
1072: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1073: return 'no_host';
1074: }
1075:
1076: sub can_host_session {
1077: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1078: my $canhost = 1;
1079: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1080: if (ref($remotesessions) eq 'HASH') {
1081: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1082: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1083: $canhost = 0;
1084: } else {
1085: $canhost = 1;
1086: }
1087: }
1088: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1089: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1090: $canhost = 1;
1091: } else {
1092: $canhost = 0;
1093: }
1094: }
1095: if ($canhost) {
1096: if ($remotesessions->{'version'} ne '') {
1097: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1098: if ($reqmajor ne '' && $reqminor ne '') {
1099: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1100: my $major = $1;
1101: my $minor = $2;
1102: if (($major < $reqmajor ) ||
1103: (($major == $reqmajor) && ($minor < $reqminor))) {
1104: $canhost = 0;
1105: }
1106: } else {
1107: $canhost = 0;
1108: }
1109: }
1110: }
1111: }
1112: }
1113: if ($canhost) {
1114: if (ref($hostedsessions) eq 'HASH') {
1115: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1116: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1117: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1118: if (($uint_dom ne '') &&
1119: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1120: $canhost = 0;
1121: } else {
1122: $canhost = 1;
1123: }
1124: }
1125: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1126: if (($uint_dom ne '') &&
1127: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1128: $canhost = 1;
1129: } else {
1130: $canhost = 0;
1131: }
1132: }
1133: }
1134: }
1135: return $canhost;
1136: }
1137:
1138: sub spare_can_host {
1139: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1140: my $canhost=1;
1141: my @intdoms;
1142: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1143: if (ref($internet_names) eq 'ARRAY') {
1144: @intdoms = @{$internet_names};
1145: }
1146: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1147: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1148: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1149: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1150: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1151: $canhost = &can_host_session($udom,$try_server,$remoterev,
1152: $remotesessions,
1153: $defdomdefaults{'hostedsessions'});
1154: }
1155: return $canhost;
1156: }
1157:
1158: sub this_host_spares {
1159: my ($dom) = @_;
1160: my ($dom_in_use,$lonhost_in_use,$result);
1161: my @hosts = ¤t_machine_ids();
1162: foreach my $lonhost (@hosts) {
1163: if (&host_domain($lonhost) eq $dom) {
1164: $dom_in_use = $dom;
1165: $lonhost_in_use = $lonhost;
1166: last;
1167: }
1168: }
1169: if ($dom_in_use ne '') {
1170: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1171: }
1172: if (ref($result) ne 'HASH') {
1173: $lonhost_in_use = $perlvar{'lonHostID'};
1174: $dom_in_use = &host_domain($lonhost_in_use);
1175: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1176: if (ref($result) ne 'HASH') {
1177: $result = \%spareid;
1178: }
1179: }
1180: return $result;
1181: }
1182:
1183: sub spares_for_offload {
1184: my ($dom_in_use,$lonhost_in_use) = @_;
1185: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1186: if (defined($cached)) {
1187: return $result;
1188: } else {
1189: my $cachetime = 60*60*24;
1190: my %domconfig =
1191: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1192: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1193: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1194: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1195: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1196: }
1197: }
1198: }
1199: }
1200: return;
1201: }
1202:
1203: sub get_lonbalancer_config {
1204: my ($servers) = @_;
1205: my ($currbalancer,$currtargets);
1206: if (ref($servers) eq 'HASH') {
1207: foreach my $server (keys(%{$servers})) {
1208: my %what = (
1209: spareid => 1,
1210: perlvar => 1,
1211: );
1212: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1213: if ($result eq 'ok') {
1214: if (ref($returnhash) eq 'HASH') {
1215: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1216: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1217: $currbalancer = $server;
1218: $currtargets = {};
1219: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1220: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1221: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1222: }
1223: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1224: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1225: }
1226: }
1227: last;
1228: }
1229: }
1230: }
1231: }
1232: }
1233: }
1234: return ($currbalancer,$currtargets);
1235: }
1236:
1237: sub check_loadbalancing {
1238: my ($uname,$udom) = @_;
1239: my ($is_balancer,$dom_in_use,$homeintdom,$rule_in_effect,
1240: $offloadto,$otherserver);
1241: my $lonhost = $perlvar{'lonHostID'};
1242: my @hosts = ¤t_machine_ids();
1243: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1244: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1245: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1246: my $serverhomedom = &host_domain($lonhost);
1247:
1248: my $cachetime = 60*60*24;
1249:
1250: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1251: $dom_in_use = $udom;
1252: $homeintdom = 1;
1253: } else {
1254: $dom_in_use = $serverhomedom;
1255: }
1256: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1257: unless (defined($cached)) {
1258: my %domconfig =
1259: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1260: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1261: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1262: }
1263: }
1264: if (ref($result) eq 'HASH') {
1265: my $currbalancer = $result->{'lonhost'};
1266: my $currtargets = $result->{'targets'};
1267: my $currrules = $result->{'rules'};
1268: if ($currbalancer ne '') {
1269: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1270: $is_balancer = 1;
1271: }
1272: }
1273: if ($is_balancer) {
1274: if (ref($currrules) eq 'HASH') {
1275: if ($homeintdom) {
1276: if ($uname ne '') {
1277: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1278: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1279: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1280: $rule_in_effect = $currrules->{'_LC_author'};
1281: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1282: $rule_in_effect = $currrules->{'_LC_adv'}
1283: }
1284: }
1285: if ($rule_in_effect eq '') {
1286: my %userenv = &userenvironment($udom,$uname,'inststatus');
1287: if ($userenv{'inststatus'} ne '') {
1288: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1289: my ($othertitle,$usertypes,$types) =
1290: &Apache::loncommon::sorted_inst_types($udom);
1291: if (ref($types) eq 'ARRAY') {
1292: foreach my $type (@{$types}) {
1293: if (grep(/^\Q$type\E$/,@statuses)) {
1294: if (exists($currrules->{$type})) {
1295: $rule_in_effect = $currrules->{$type};
1296: }
1297: }
1298: }
1299: }
1300: } else {
1301: if (exists($currrules->{'default'})) {
1302: $rule_in_effect = $currrules->{'default'};
1303: }
1304: }
1305: }
1306: } else {
1307: if (exists($currrules->{'default'})) {
1308: $rule_in_effect = $currrules->{'default'};
1309: }
1310: }
1311: } else {
1312: if ($currrules->{'_LC_external'} ne '') {
1313: $rule_in_effect = $currrules->{'_LC_external'};
1314: }
1315: }
1316: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1317: $uname,$udom);
1318: }
1319: }
1320: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1321: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1322: unless (defined($cached)) {
1323: my %domconfig =
1324: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1325: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1326: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1327: }
1328: }
1329: if (ref($result) eq 'HASH') {
1330: my $currbalancer = $result->{'lonhost'};
1331: my $currtargets = $result->{'targets'};
1332: my $currrules = $result->{'rules'};
1333:
1334: if ($currbalancer eq $lonhost) {
1335: $is_balancer = 1;
1336: if (ref($currrules) eq 'HASH') {
1337: if ($currrules->{'_LC_internetdom'} ne '') {
1338: $rule_in_effect = $currrules->{'_LC_internetdom'};
1339: }
1340: }
1341: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1342: $uname,$udom);
1343: }
1344: } else {
1345: if ($perlvar{'lonBalancer'} eq 'yes') {
1346: $is_balancer = 1;
1347: $offloadto = &this_host_spares($dom_in_use);
1348: }
1349: }
1350: } else {
1351: if ($perlvar{'lonBalancer'} eq 'yes') {
1352: $is_balancer = 1;
1353: $offloadto = &this_host_spares($dom_in_use);
1354: }
1355: }
1356: if ($is_balancer) {
1357: my $lowest_load = 30000;
1358: if (ref($offloadto) eq 'HASH') {
1359: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1360: foreach my $try_server (@{$offloadto->{'primary'}}) {
1361: ($otherserver,$lowest_load) =
1362: &compare_server_load($try_server,$otherserver,$lowest_load);
1363: }
1364: }
1365: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1366:
1367: if (!$found_server) {
1368: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1369: foreach my $try_server (@{$offloadto->{'default'}}) {
1370: ($otherserver,$lowest_load) =
1371: &compare_server_load($try_server,$otherserver,$lowest_load);
1372: }
1373: }
1374: }
1375: } elsif (ref($offloadto) eq 'ARRAY') {
1376: if (@{$offloadto} == 1) {
1377: $otherserver = $offloadto->[0];
1378: } elsif (@{$offloadto} > 1) {
1379: foreach my $try_server (@{$offloadto}) {
1380: ($otherserver,$lowest_load) =
1381: &compare_server_load($try_server,$otherserver,$lowest_load);
1382: }
1383: }
1384: }
1385: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1386: $is_balancer = 0;
1387: if ($uname ne '' && $udom ne '') {
1388: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1389:
1390: &appenv({'user.loadbalexempt' => $lonhost,
1391: 'user.loadbalcheck.time' => time});
1392: }
1393: }
1394: }
1395: }
1396: return ($is_balancer,$otherserver);
1397: }
1398:
1399: sub get_loadbalancer_targets {
1400: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1401: my $offloadto;
1402: if ($rule_in_effect eq 'none') {
1403: return [$perlvar{'lonHostID'}];
1404: } elsif ($rule_in_effect eq '') {
1405: $offloadto = $currtargets;
1406: } else {
1407: if ($rule_in_effect eq 'homeserver') {
1408: my $homeserver = &homeserver($uname,$udom);
1409: if ($homeserver ne 'no_host') {
1410: $offloadto = [$homeserver];
1411: }
1412: } elsif ($rule_in_effect eq 'externalbalancer') {
1413: my %domconfig =
1414: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1415: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1416: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1417: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1418: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1419: }
1420: }
1421: } else {
1422: my %servers = &internet_dom_servers($udom);
1423: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1424: if (&hostname($remotebalancer) ne '') {
1425: $offloadto = [$remotebalancer];
1426: }
1427: }
1428: } elsif (&hostname($rule_in_effect) ne '') {
1429: $offloadto = [$rule_in_effect];
1430: }
1431: }
1432: return $offloadto;
1433: }
1434:
1435: sub internet_dom_servers {
1436: my ($dom) = @_;
1437: my (%uniqservers,%servers);
1438: my $primaryserver = &hostname(&domain($dom,'primary'));
1439: my @machinedoms = &machine_domains($primaryserver);
1440: foreach my $mdom (@machinedoms) {
1441: my %currservers = %servers;
1442: my %server = &get_servers($mdom);
1443: %servers = (%currservers,%server);
1444: }
1445: my %by_hostname;
1446: foreach my $id (keys(%servers)) {
1447: push(@{$by_hostname{$servers{$id}}},$id);
1448: }
1449: foreach my $hostname (sort(keys(%by_hostname))) {
1450: if (@{$by_hostname{$hostname}} > 1) {
1451: my $match = 0;
1452: foreach my $id (@{$by_hostname{$hostname}}) {
1453: if (&host_domain($id) eq $dom) {
1454: $uniqservers{$id} = $hostname;
1455: $match = 1;
1456: }
1457: }
1458: unless ($match) {
1459: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1460: }
1461: } else {
1462: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1463: }
1464: }
1465: return %uniqservers;
1466: }
1467:
1468: # ---------------------- Find the homebase for a user from domain's lib servers
1469:
1470: my %homecache;
1471: sub homeserver {
1472: my ($uname,$udom,$ignoreBadCache)=@_;
1473: my $index="$uname:$udom";
1474:
1475: if (exists($homecache{$index})) { return $homecache{$index}; }
1476:
1477: my %servers = &get_servers($udom,'library');
1478: foreach my $tryserver (keys(%servers)) {
1479: next if ($ignoreBadCache ne 'true' &&
1480: exists($badServerCache{$tryserver}));
1481:
1482: my $answer=reply("home:$udom:$uname",$tryserver);
1483: if ($answer eq 'found') {
1484: delete($badServerCache{$tryserver});
1485: return $homecache{$index}=$tryserver;
1486: } elsif ($answer eq 'no_host') {
1487: $badServerCache{$tryserver}=1;
1488: }
1489: }
1490: return 'no_host';
1491: }
1492:
1493: # ------------------------------------- Find the usernames behind a list of IDs
1494:
1495: sub idget {
1496: my ($udom,@ids)=@_;
1497: my %returnhash=();
1498:
1499: my %servers = &get_servers($udom,'library');
1500: foreach my $tryserver (keys(%servers)) {
1501: my $idlist=join('&',@ids);
1502: $idlist=~tr/A-Z/a-z/;
1503: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1504: my @answer=();
1505: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1506: @answer=split(/\&/,$reply);
1507: } ;
1508: my $i;
1509: for ($i=0;$i<=$#ids;$i++) {
1510: if ($answer[$i]) {
1511: $returnhash{$ids[$i]}=$answer[$i];
1512: }
1513: }
1514: }
1515: return %returnhash;
1516: }
1517:
1518: # ------------------------------------- Find the IDs behind a list of usernames
1519:
1520: sub idrget {
1521: my ($udom,@unames)=@_;
1522: my %returnhash=();
1523: foreach my $uname (@unames) {
1524: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1525: }
1526: return %returnhash;
1527: }
1528:
1529: # ------------------------------- Store away a list of names and associated IDs
1530:
1531: sub idput {
1532: my ($udom,%ids)=@_;
1533: my %servers=();
1534: foreach my $uname (keys(%ids)) {
1535: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1536: my $uhom=&homeserver($uname,$udom);
1537: if ($uhom ne 'no_host') {
1538: my $id=&escape($ids{$uname});
1539: $id=~tr/A-Z/a-z/;
1540: my $esc_unam=&escape($uname);
1541: if ($servers{$uhom}) {
1542: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1543: } else {
1544: $servers{$uhom}=$id.'='.$esc_unam;
1545: }
1546: }
1547: }
1548: foreach my $server (keys(%servers)) {
1549: &critical('idput:'.$udom.':'.$servers{$server},$server);
1550: }
1551: }
1552:
1553: # ------------------------------dump from db file owned by domainconfig user
1554: sub dump_dom {
1555: my ($namespace, $udom, $regexp) = @_;
1556:
1557: $udom ||= $env{'user.domain'};
1558:
1559: return () unless $udom;
1560:
1561: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1562: }
1563:
1564: # ------------------------------------------ get items from domain db files
1565:
1566: sub get_dom {
1567: my ($namespace,$storearr,$udom,$uhome)=@_;
1568: my $items='';
1569: foreach my $item (@$storearr) {
1570: $items.=&escape($item).'&';
1571: }
1572: $items=~s/\&$//;
1573: if (!$udom) {
1574: $udom=$env{'user.domain'};
1575: if (defined(&domain($udom,'primary'))) {
1576: $uhome=&domain($udom,'primary');
1577: } else {
1578: undef($uhome);
1579: }
1580: } else {
1581: if (!$uhome) {
1582: if (defined(&domain($udom,'primary'))) {
1583: $uhome=&domain($udom,'primary');
1584: }
1585: }
1586: }
1587: if ($udom && $uhome && ($uhome ne 'no_host')) {
1588: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1589: my %returnhash;
1590: if ($rep eq '' || $rep =~ /^error: 2 /) {
1591: return %returnhash;
1592: }
1593: my @pairs=split(/\&/,$rep);
1594: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1595: return @pairs;
1596: }
1597: my $i=0;
1598: foreach my $item (@$storearr) {
1599: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1600: $i++;
1601: }
1602: return %returnhash;
1603: } else {
1604: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1605: }
1606: }
1607:
1608: # -------------------------------------------- put items in domain db files
1609:
1610: sub put_dom {
1611: my ($namespace,$storehash,$udom,$uhome)=@_;
1612: if (!$udom) {
1613: $udom=$env{'user.domain'};
1614: if (defined(&domain($udom,'primary'))) {
1615: $uhome=&domain($udom,'primary');
1616: } else {
1617: undef($uhome);
1618: }
1619: } else {
1620: if (!$uhome) {
1621: if (defined(&domain($udom,'primary'))) {
1622: $uhome=&domain($udom,'primary');
1623: }
1624: }
1625: }
1626: if ($udom && $uhome && ($uhome ne 'no_host')) {
1627: my $items='';
1628: foreach my $item (keys(%$storehash)) {
1629: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1630: }
1631: $items=~s/\&$//;
1632: return &reply("putdom:$udom:$namespace:$items",$uhome);
1633: } else {
1634: &logthis("put_dom failed - no homeserver and/or domain");
1635: }
1636: }
1637:
1638: # --------------------- newput for items in db file owned by domainconfig user
1639: sub newput_dom {
1640: my ($namespace,$storehash,$udom) = @_;
1641: my $result;
1642: if (!$udom) {
1643: $udom=$env{'user.domain'};
1644: }
1645: if ($udom) {
1646: my $uname = &get_domainconfiguser($udom);
1647: $result = &newput($namespace,$storehash,$udom,$uname);
1648: }
1649: return $result;
1650: }
1651:
1652: # --------------------- delete for items in db file owned by domainconfig user
1653: sub del_dom {
1654: my ($namespace,$storearr,$udom)=@_;
1655: if (ref($storearr) eq 'ARRAY') {
1656: if (!$udom) {
1657: $udom=$env{'user.domain'};
1658: }
1659: if ($udom) {
1660: my $uname = &get_domainconfiguser($udom);
1661: return &del($namespace,$storearr,$udom,$uname);
1662: }
1663: }
1664: }
1665:
1666: # ----------------------------------construct domainconfig user for a domain
1667: sub get_domainconfiguser {
1668: my ($udom) = @_;
1669: return $udom.'-domainconfig';
1670: }
1671:
1672: sub retrieve_inst_usertypes {
1673: my ($udom) = @_;
1674: my (%returnhash,@order);
1675: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1676: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1677: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1678: %returnhash = %{$domdefs{'inststatustypes'}};
1679: @order = @{$domdefs{'inststatusorder'}};
1680: } else {
1681: if (defined(&domain($udom,'primary'))) {
1682: my $uhome=&domain($udom,'primary');
1683: my $rep=&reply("inst_usertypes:$udom",$uhome);
1684: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1685: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1686: return (\%returnhash,\@order);
1687: }
1688: my ($hashitems,$orderitems) = split(/:/,$rep);
1689: my @pairs=split(/\&/,$hashitems);
1690: foreach my $item (@pairs) {
1691: my ($key,$value)=split(/=/,$item,2);
1692: $key = &unescape($key);
1693: next if ($key =~ /^error: 2 /);
1694: $returnhash{$key}=&thaw_unescape($value);
1695: }
1696: my @esc_order = split(/\&/,$orderitems);
1697: foreach my $item (@esc_order) {
1698: push(@order,&unescape($item));
1699: }
1700: } else {
1701: &logthis("get_dom failed - no primary domain server for $udom");
1702: }
1703: }
1704: return (\%returnhash,\@order);
1705: }
1706:
1707: sub is_domainimage {
1708: my ($url) = @_;
1709: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1710: if (&domain($1) ne '') {
1711: return '1';
1712: }
1713: }
1714: return;
1715: }
1716:
1717: sub inst_directory_query {
1718: my ($srch) = @_;
1719: my $udom = $srch->{'srchdomain'};
1720: my %results;
1721: my $homeserver = &domain($udom,'primary');
1722: my $outcome;
1723: if ($homeserver ne '') {
1724: my $queryid=&reply("querysend:instdirsearch:".
1725: &escape($srch->{'srchby'}).':'.
1726: &escape($srch->{'srchterm'}).':'.
1727: &escape($srch->{'srchtype'}),$homeserver);
1728: my $host=&hostname($homeserver);
1729: if ($queryid !~/^\Q$host\E\_/) {
1730: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1731: return;
1732: }
1733: my $response = &get_query_reply($queryid);
1734: my $maxtries = 5;
1735: my $tries = 1;
1736: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1737: $response = &get_query_reply($queryid);
1738: $tries ++;
1739: }
1740:
1741: if (!&error($response) && $response ne 'refused') {
1742: if ($response eq 'unavailable') {
1743: $outcome = $response;
1744: } else {
1745: $outcome = 'ok';
1746: my @matches = split(/\n/,$response);
1747: foreach my $match (@matches) {
1748: my ($key,$value) = split(/=/,$match);
1749: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1750: }
1751: }
1752: }
1753: }
1754: return ($outcome,%results);
1755: }
1756:
1757: sub usersearch {
1758: my ($srch) = @_;
1759: my $dom = $srch->{'srchdomain'};
1760: my %results;
1761: my %libserv = &all_library();
1762: my $query = 'usersearch';
1763: foreach my $tryserver (keys(%libserv)) {
1764: if (&host_domain($tryserver) eq $dom) {
1765: my $host=&hostname($tryserver);
1766: my $queryid=
1767: &reply("querysend:".&escape($query).':'.
1768: &escape($srch->{'srchby'}).':'.
1769: &escape($srch->{'srchtype'}).':'.
1770: &escape($srch->{'srchterm'}),$tryserver);
1771: if ($queryid !~/^\Q$host\E\_/) {
1772: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1773: next;
1774: }
1775: my $reply = &get_query_reply($queryid);
1776: my $maxtries = 1;
1777: my $tries = 1;
1778: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1779: $reply = &get_query_reply($queryid);
1780: $tries ++;
1781: }
1782: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1783: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1784: } else {
1785: my @matches;
1786: if ($reply =~ /\n/) {
1787: @matches = split(/\n/,$reply);
1788: } else {
1789: @matches = split(/\&/,$reply);
1790: }
1791: foreach my $match (@matches) {
1792: my ($uname,$udom,%userhash);
1793: foreach my $entry (split(/:/,$match)) {
1794: my ($key,$value) =
1795: map {&unescape($_);} split(/=/,$entry);
1796: $userhash{$key} = $value;
1797: if ($key eq 'username') {
1798: $uname = $value;
1799: } elsif ($key eq 'domain') {
1800: $udom = $value;
1801: }
1802: }
1803: $results{$uname.':'.$udom} = \%userhash;
1804: }
1805: }
1806: }
1807: }
1808: return %results;
1809: }
1810:
1811: sub get_instuser {
1812: my ($udom,$uname,$id) = @_;
1813: my $homeserver = &domain($udom,'primary');
1814: my ($outcome,%results);
1815: if ($homeserver ne '') {
1816: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1817: &escape($id).':'.&escape($udom),$homeserver);
1818: my $host=&hostname($homeserver);
1819: if ($queryid !~/^\Q$host\E\_/) {
1820: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1821: return;
1822: }
1823: my $response = &get_query_reply($queryid);
1824: my $maxtries = 5;
1825: my $tries = 1;
1826: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1827: $response = &get_query_reply($queryid);
1828: $tries ++;
1829: }
1830: if (!&error($response) && $response ne 'refused') {
1831: if ($response eq 'unavailable') {
1832: $outcome = $response;
1833: } else {
1834: $outcome = 'ok';
1835: my @matches = split(/\n/,$response);
1836: foreach my $match (@matches) {
1837: my ($key,$value) = split(/=/,$match);
1838: $results{&unescape($key)} = &thaw_unescape($value);
1839: }
1840: }
1841: }
1842: }
1843: my %userinfo;
1844: if (ref($results{$uname}) eq 'HASH') {
1845: %userinfo = %{$results{$uname}};
1846: }
1847: return ($outcome,%userinfo);
1848: }
1849:
1850: sub inst_rulecheck {
1851: my ($udom,$uname,$id,$item,$rules) = @_;
1852: my %returnhash;
1853: if ($udom ne '') {
1854: if (ref($rules) eq 'ARRAY') {
1855: @{$rules} = map {&escape($_);} (@{$rules});
1856: my $rulestr = join(':',@{$rules});
1857: my $homeserver=&domain($udom,'primary');
1858: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1859: my $response;
1860: if ($item eq 'username') {
1861: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1862: ':'.&escape($uname).':'.$rulestr,
1863: $homeserver));
1864: } elsif ($item eq 'id') {
1865: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1866: ':'.&escape($id).':'.$rulestr,
1867: $homeserver));
1868: } elsif ($item eq 'selfcreate') {
1869: $response=&unescape(&reply('instselfcreatecheck:'.
1870: &escape($udom).':'.&escape($uname).
1871: ':'.$rulestr,$homeserver));
1872: }
1873: if ($response ne 'refused') {
1874: my @pairs=split(/\&/,$response);
1875: foreach my $item (@pairs) {
1876: my ($key,$value)=split(/=/,$item,2);
1877: $key = &unescape($key);
1878: next if ($key =~ /^error: 2 /);
1879: $returnhash{$key}=&thaw_unescape($value);
1880: }
1881: }
1882: }
1883: }
1884: }
1885: return %returnhash;
1886: }
1887:
1888: sub inst_userrules {
1889: my ($udom,$check) = @_;
1890: my (%ruleshash,@ruleorder);
1891: if ($udom ne '') {
1892: my $homeserver=&domain($udom,'primary');
1893: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1894: my $response;
1895: if ($check eq 'id') {
1896: $response=&reply('instidrules:'.&escape($udom),
1897: $homeserver);
1898: } elsif ($check eq 'email') {
1899: $response=&reply('instemailrules:'.&escape($udom),
1900: $homeserver);
1901: } else {
1902: $response=&reply('instuserrules:'.&escape($udom),
1903: $homeserver);
1904: }
1905: if (($response ne 'refused') && ($response ne 'error') &&
1906: ($response ne 'unknown_cmd') &&
1907: ($response ne 'no_such_host')) {
1908: my ($hashitems,$orderitems) = split(/:/,$response);
1909: my @pairs=split(/\&/,$hashitems);
1910: foreach my $item (@pairs) {
1911: my ($key,$value)=split(/=/,$item,2);
1912: $key = &unescape($key);
1913: next if ($key =~ /^error: 2 /);
1914: $ruleshash{$key}=&thaw_unescape($value);
1915: }
1916: my @esc_order = split(/\&/,$orderitems);
1917: foreach my $item (@esc_order) {
1918: push(@ruleorder,&unescape($item));
1919: }
1920: }
1921: }
1922: }
1923: return (\%ruleshash,\@ruleorder);
1924: }
1925:
1926: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1927:
1928: sub get_domain_defaults {
1929: my ($domain) = @_;
1930: my $cachetime = 60*60*24;
1931: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1932: if (defined($cached)) {
1933: if (ref($result) eq 'HASH') {
1934: return %{$result};
1935: }
1936: }
1937: my %domdefaults;
1938: my %domconfig =
1939: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1940: 'requestcourses','inststatus',
1941: 'coursedefaults','usersessions'],$domain);
1942: if (ref($domconfig{'defaults'}) eq 'HASH') {
1943: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1944: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1945: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1946: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1947: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1948: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1949: } else {
1950: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1951: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1952: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1953: }
1954: if (ref($domconfig{'quotas'}) eq 'HASH') {
1955: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1956: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1957: } else {
1958: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1959: }
1960: my @usertools = ('aboutme','blog','webdav','portfolio');
1961: foreach my $item (@usertools) {
1962: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1963: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1964: }
1965: }
1966: }
1967: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1968: foreach my $item ('official','unofficial','community') {
1969: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1970: }
1971: }
1972: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1973: foreach my $item ('inststatustypes','inststatusorder') {
1974: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1975: }
1976: }
1977: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1978: foreach my $item ('canuse_pdfforms') {
1979: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1980: }
1981: }
1982: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1983: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1984: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1985: }
1986: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1987: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1988: }
1989: }
1990: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1991: $cachetime);
1992: return %domdefaults;
1993: }
1994:
1995: # --------------------------------------------------- Assign a key to a student
1996:
1997: sub assign_access_key {
1998: #
1999: # a valid key looks like uname:udom#comments
2000: # comments are being appended
2001: #
2002: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2003: $kdom=
2004: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2005: $knum=
2006: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2007: $cdom=
2008: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2009: $cnum=
2010: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2011: $udom=$env{'user.name'} unless (defined($udom));
2012: $uname=$env{'user.domain'} unless (defined($uname));
2013: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2014: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2015: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2016: # assigned to this person
2017: # - this should not happen,
2018: # unless something went wrong
2019: # the first time around
2020: # ready to assign
2021: $logentry=$1.'; '.$logentry;
2022: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2023: $kdom,$knum) eq 'ok') {
2024: # key now belongs to user
2025: my $envkey='key.'.$cdom.'_'.$cnum;
2026: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2027: &appenv({'environment.'.$envkey => $ckey});
2028: return 'ok';
2029: } else {
2030: return
2031: 'error: Count not permanently assign key, will need to be re-entered later.';
2032: }
2033: } else {
2034: return 'error: Could not assign key, try again later.';
2035: }
2036: } elsif (!$existing{$ckey}) {
2037: # the key does not exist
2038: return 'error: The key does not exist';
2039: } else {
2040: # the key is somebody else's
2041: return 'error: The key is already in use';
2042: }
2043: }
2044:
2045: # ------------------------------------------ put an additional comment on a key
2046:
2047: sub comment_access_key {
2048: #
2049: # a valid key looks like uname:udom#comments
2050: # comments are being appended
2051: #
2052: my ($ckey,$cdom,$cnum,$logentry)=@_;
2053: $cdom=
2054: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2055: $cnum=
2056: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2057: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2058: if ($existing{$ckey}) {
2059: $existing{$ckey}.='; '.$logentry;
2060: # ready to assign
2061: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2062: $cdom,$cnum) eq 'ok') {
2063: return 'ok';
2064: } else {
2065: return 'error: Count not store comment.';
2066: }
2067: } else {
2068: # the key does not exist
2069: return 'error: The key does not exist';
2070: }
2071: }
2072:
2073: # ------------------------------------------------------ Generate a set of keys
2074:
2075: sub generate_access_keys {
2076: my ($number,$cdom,$cnum,$logentry)=@_;
2077: $cdom=
2078: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2079: $cnum=
2080: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2081: unless (&allowed('mky',$cdom)) { return 0; }
2082: unless (($cdom) && ($cnum)) { return 0; }
2083: if ($number>10000) { return 0; }
2084: sleep(2); # make sure don't get same seed twice
2085: srand(time()^($$+($$<<15))); # from "Programming Perl"
2086: my $total=0;
2087: for (my $i=1;$i<=$number;$i++) {
2088: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2089: sprintf("%lx",int(100000*rand)).'-'.
2090: sprintf("%lx",int(100000*rand));
2091: $newkey=~s/1/g/g; # folks mix up 1 and l
2092: $newkey=~s/0/h/g; # and also 0 and O
2093: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2094: if ($existing{$newkey}) {
2095: $i--;
2096: } else {
2097: if (&put('accesskeys',
2098: { $newkey => '# generated '.localtime().
2099: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2100: '; '.$logentry },
2101: $cdom,$cnum) eq 'ok') {
2102: $total++;
2103: }
2104: }
2105: }
2106: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2107: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2108: return $total;
2109: }
2110:
2111: # ------------------------------------------------------- Validate an accesskey
2112:
2113: sub validate_access_key {
2114: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2115: $cdom=
2116: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2117: $cnum=
2118: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2119: $udom=$env{'user.domain'} unless (defined($udom));
2120: $uname=$env{'user.name'} unless (defined($uname));
2121: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2122: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2123: }
2124:
2125: # ------------------------------------- Find the section of student in a course
2126: sub devalidate_getsection_cache {
2127: my ($udom,$unam,$courseid)=@_;
2128: my $hashid="$udom:$unam:$courseid";
2129: &devalidate_cache_new('getsection',$hashid);
2130: }
2131:
2132: sub courseid_to_courseurl {
2133: my ($courseid) = @_;
2134: #already url style courseid
2135: return $courseid if ($courseid =~ m{^/});
2136:
2137: if (exists($env{'course.'.$courseid.'.num'})) {
2138: my $cnum = $env{'course.'.$courseid.'.num'};
2139: my $cdom = $env{'course.'.$courseid.'.domain'};
2140: return "/$cdom/$cnum";
2141: }
2142:
2143: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2144: if (exists($courseinfo{'num'})) {
2145: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2146: }
2147:
2148: return undef;
2149: }
2150:
2151: sub getsection {
2152: my ($udom,$unam,$courseid)=@_;
2153: my $cachetime=1800;
2154:
2155: my $hashid="$udom:$unam:$courseid";
2156: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2157: if (defined($cached)) { return $result; }
2158:
2159: my %Pending;
2160: my %Expired;
2161: #
2162: # Each role can either have not started yet (pending), be active,
2163: # or have expired.
2164: #
2165: # If there is an active role, we are done.
2166: #
2167: # If there is more than one role which has not started yet,
2168: # choose the one which will start sooner
2169: # If there is one role which has not started yet, return it.
2170: #
2171: # If there is more than one expired role, choose the one which ended last.
2172: # If there is a role which has expired, return it.
2173: #
2174: $courseid = &courseid_to_courseurl($courseid);
2175: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2176: foreach my $key (keys(%roleshash)) {
2177: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2178: my $section=$1;
2179: if ($key eq $courseid.'_st') { $section=''; }
2180: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2181: my $now=time;
2182: if (defined($end) && $end && ($now > $end)) {
2183: $Expired{$end}=$section;
2184: next;
2185: }
2186: if (defined($start) && $start && ($now < $start)) {
2187: $Pending{$start}=$section;
2188: next;
2189: }
2190: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2191: }
2192: #
2193: # Presumedly there will be few matching roles from the above
2194: # loop and the sorting time will be negligible.
2195: if (scalar(keys(%Pending))) {
2196: my ($time) = sort {$a <=> $b} keys(%Pending);
2197: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2198: }
2199: if (scalar(keys(%Expired))) {
2200: my @sorted = sort {$a <=> $b} keys(%Expired);
2201: my $time = pop(@sorted);
2202: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2203: }
2204: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2205: }
2206:
2207: sub save_cache {
2208: &purge_remembered();
2209: #&Apache::loncommon::validate_page();
2210: undef(%env);
2211: undef($env_loaded);
2212: }
2213:
2214: my $to_remember=-1;
2215: my %remembered;
2216: my %accessed;
2217: my $kicks=0;
2218: my $hits=0;
2219: sub make_key {
2220: my ($name,$id) = @_;
2221: if (length($id) > 65
2222: && length(&escape($id)) > 200) {
2223: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2224: }
2225: return &escape($name.':'.$id);
2226: }
2227:
2228: sub devalidate_cache_new {
2229: my ($name,$id,$debug) = @_;
2230: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2231: $id=&make_key($name,$id);
2232: $memcache->delete($id);
2233: delete($remembered{$id});
2234: delete($accessed{$id});
2235: }
2236:
2237: sub is_cached_new {
2238: my ($name,$id,$debug) = @_;
2239: $id=&make_key($name,$id);
2240: if (exists($remembered{$id})) {
2241: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2242: $accessed{$id}=[&gettimeofday()];
2243: $hits++;
2244: return ($remembered{$id},1);
2245: }
2246: my $value = $memcache->get($id);
2247: if (!(defined($value))) {
2248: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2249: return (undef,undef);
2250: }
2251: if ($value eq '__undef__') {
2252: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2253: $value=undef;
2254: }
2255: &make_room($id,$value,$debug);
2256: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2257: return ($value,1);
2258: }
2259:
2260: sub do_cache_new {
2261: my ($name,$id,$value,$time,$debug) = @_;
2262: $id=&make_key($name,$id);
2263: my $setvalue=$value;
2264: if (!defined($setvalue)) {
2265: $setvalue='__undef__';
2266: }
2267: if (!defined($time) ) {
2268: $time=600;
2269: }
2270: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2271: my $result = $memcache->set($id,$setvalue,$time);
2272: if (! $result) {
2273: &logthis("caching of id -> $id failed");
2274: $memcache->disconnect_all();
2275: }
2276: # need to make a copy of $value
2277: &make_room($id,$value,$debug);
2278: return $value;
2279: }
2280:
2281: sub make_room {
2282: my ($id,$value,$debug)=@_;
2283:
2284: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2285: : $value;
2286: if ($to_remember<0) { return; }
2287: $accessed{$id}=[&gettimeofday()];
2288: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2289: my $to_kick;
2290: my $max_time=0;
2291: foreach my $other (keys(%accessed)) {
2292: if (&tv_interval($accessed{$other}) > $max_time) {
2293: $to_kick=$other;
2294: $max_time=&tv_interval($accessed{$other});
2295: }
2296: }
2297: delete($remembered{$to_kick});
2298: delete($accessed{$to_kick});
2299: $kicks++;
2300: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2301: return;
2302: }
2303:
2304: sub purge_remembered {
2305: #&logthis("Tossing ".scalar(keys(%remembered)));
2306: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2307: undef(%remembered);
2308: undef(%accessed);
2309: }
2310: # ------------------------------------- Read an entry from a user's environment
2311:
2312: sub userenvironment {
2313: my ($udom,$unam,@what)=@_;
2314: my $items;
2315: foreach my $item (@what) {
2316: $items.=&escape($item).'&';
2317: }
2318: $items=~s/\&$//;
2319: my %returnhash=();
2320: my $uhome = &homeserver($unam,$udom);
2321: unless ($uhome eq 'no_host') {
2322: my @answer=split(/\&/,
2323: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2324: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2325: return %returnhash;
2326: }
2327: my $i;
2328: for ($i=0;$i<=$#what;$i++) {
2329: $returnhash{$what[$i]}=&unescape($answer[$i]);
2330: }
2331: }
2332: return %returnhash;
2333: }
2334:
2335: # ---------------------------------------------------------- Get a studentphoto
2336: sub studentphoto {
2337: my ($udom,$unam,$ext) = @_;
2338: my $home=&Apache::lonnet::homeserver($unam,$udom);
2339: if (defined($env{'request.course.id'})) {
2340: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2341: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2342: return(&retrievestudentphoto($udom,$unam,$ext));
2343: } else {
2344: my ($result,$perm_reqd)=
2345: &Apache::lonnet::auto_photo_permission($unam,$udom);
2346: if ($result eq 'ok') {
2347: if (!($perm_reqd eq 'yes')) {
2348: return(&retrievestudentphoto($udom,$unam,$ext));
2349: }
2350: }
2351: }
2352: }
2353: } else {
2354: my ($result,$perm_reqd) =
2355: &Apache::lonnet::auto_photo_permission($unam,$udom);
2356: if ($result eq 'ok') {
2357: if (!($perm_reqd eq 'yes')) {
2358: return(&retrievestudentphoto($udom,$unam,$ext));
2359: }
2360: }
2361: }
2362: return '/adm/lonKaputt/lonlogo_broken.gif';
2363: }
2364:
2365: sub retrievestudentphoto {
2366: my ($udom,$unam,$ext,$type) = @_;
2367: my $home=&Apache::lonnet::homeserver($unam,$udom);
2368: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2369: if ($ret eq 'ok') {
2370: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2371: if ($type eq 'thumbnail') {
2372: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2373: }
2374: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2375: return $tokenurl;
2376: } else {
2377: if ($type eq 'thumbnail') {
2378: return '/adm/lonKaputt/genericstudent_tn.gif';
2379: } else {
2380: return '/adm/lonKaputt/lonlogo_broken.gif';
2381: }
2382: }
2383: }
2384:
2385: # -------------------------------------------------------------------- New chat
2386:
2387: sub chatsend {
2388: my ($newentry,$anon,$group)=@_;
2389: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2390: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2391: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2392: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2393: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2394: &escape($newentry)).':'.$group,$chome);
2395: }
2396:
2397: # ------------------------------------------ Find current version of a resource
2398:
2399: sub getversion {
2400: my $fname=&clutter(shift);
2401: unless ($fname=~/^\/res\//) { return -1; }
2402: return ¤tversion(&filelocation('',$fname));
2403: }
2404:
2405: sub currentversion {
2406: my $fname=shift;
2407: my $author=$fname;
2408: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2409: my ($udom,$uname)=split(/\//,$author);
2410: my $home=&homeserver($uname,$udom);
2411: if ($home eq 'no_host') {
2412: return -1;
2413: }
2414: my $answer=&reply("currentversion:$fname",$home);
2415: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2416: return -1;
2417: }
2418: return $answer;
2419: }
2420:
2421: #
2422: # Return special version number of resource if set by override, empty otherwise
2423: #
2424: sub usedversion {
2425: my $fname=shift;
2426: unless ($fname) { $fname=$env{'request.uri'}; }
2427: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2428: if ($urlversion) { return $urlversion; }
2429: return '';
2430: }
2431:
2432: # ----------------------------- Subscribe to a resource, return URL if possible
2433:
2434: sub subscribe {
2435: my $fname=shift;
2436: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2437: $fname=~s/[\n\r]//g;
2438: my $author=$fname;
2439: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2440: my ($udom,$uname)=split(/\//,$author);
2441: my $home=homeserver($uname,$udom);
2442: if ($home eq 'no_host') {
2443: return 'not_found';
2444: }
2445: my $answer=reply("sub:$fname",$home);
2446: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2447: $answer.=' by '.$home;
2448: }
2449: return $answer;
2450: }
2451:
2452: # -------------------------------------------------------------- Replicate file
2453:
2454: sub repcopy {
2455: my $filename=shift;
2456: $filename=~s/\/+/\//g;
2457: my $londocroot = $perlvar{'lonDocRoot'};
2458: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2459: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2460: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2461: $filename=~m{^/*(uploaded|editupload)/}) {
2462: return &repcopy_userfile($filename);
2463: }
2464: $filename=~s/[\n\r]//g;
2465: my $transname="$filename.in.transfer";
2466: # FIXME: this should flock
2467: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2468: my $remoteurl=subscribe($filename);
2469: if ($remoteurl =~ /^con_lost by/) {
2470: &logthis("Subscribe returned $remoteurl: $filename");
2471: return 'unavailable';
2472: } elsif ($remoteurl eq 'not_found') {
2473: #&logthis("Subscribe returned not_found: $filename");
2474: return 'not_found';
2475: } elsif ($remoteurl =~ /^rejected by/) {
2476: &logthis("Subscribe returned $remoteurl: $filename");
2477: return 'forbidden';
2478: } elsif ($remoteurl eq 'directory') {
2479: return 'ok';
2480: } else {
2481: my $author=$filename;
2482: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2483: my ($udom,$uname)=split(/\//,$author);
2484: my $home=homeserver($uname,$udom);
2485: unless ($home eq $perlvar{'lonHostID'}) {
2486: my @parts=split(/\//,$filename);
2487: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2488: if ($path ne "$londocroot/res") {
2489: &logthis("Malconfiguration for replication: $filename");
2490: return 'bad_request';
2491: }
2492: my $count;
2493: for ($count=5;$count<$#parts;$count++) {
2494: $path.="/$parts[$count]";
2495: if ((-e $path)!=1) {
2496: mkdir($path,0777);
2497: }
2498: }
2499: my $ua=new LWP::UserAgent;
2500: my $request=new HTTP::Request('GET',"$remoteurl");
2501: my $response=$ua->request($request,$transname);
2502: if ($response->is_error()) {
2503: unlink($transname);
2504: my $message=$response->status_line;
2505: &logthis("<font color=\"blue\">WARNING:"
2506: ." LWP get: $message: $filename</font>");
2507: return 'unavailable';
2508: } else {
2509: if ($remoteurl!~/\.meta$/) {
2510: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2511: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2512: if ($mresponse->is_error()) {
2513: unlink($filename.'.meta');
2514: &logthis(
2515: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2516: }
2517: }
2518: rename($transname,$filename);
2519: return 'ok';
2520: }
2521: }
2522: }
2523: }
2524:
2525: # ------------------------------------------------ Get server side include body
2526: sub ssi_body {
2527: my ($filelink,%form)=@_;
2528: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2529: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2530: }
2531: my $output='';
2532: my $response;
2533: if ($filelink=~/^https?\:/) {
2534: ($output,$response)=&externalssi($filelink);
2535: } else {
2536: $filelink .= $filelink=~/\?/ ? '&' : '?';
2537: $filelink .= 'inhibitmenu=yes';
2538: ($output,$response)=&ssi($filelink,%form);
2539: }
2540: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2541: $output=~s/^.*?\<body[^\>]*\>//si;
2542: $output=~s/\<\/body\s*\>.*?$//si;
2543: if (wantarray) {
2544: return ($output, $response);
2545: } else {
2546: return $output;
2547: }
2548: }
2549:
2550: # --------------------------------------------------------- Server Side Include
2551:
2552: sub absolute_url {
2553: my ($host_name) = @_;
2554: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2555: if ($host_name eq '') {
2556: $host_name = $ENV{'SERVER_NAME'};
2557: }
2558: return $protocol.$host_name;
2559: }
2560:
2561: #
2562: # Server side include.
2563: # Parameters:
2564: # fn Possibly encrypted resource name/id.
2565: # form Hash that describes how the rendering should be done
2566: # and other things.
2567: # Returns:
2568: # Scalar context: The content of the response.
2569: # Array context: 2 element list of the content and the full response object.
2570: #
2571: sub ssi {
2572:
2573: my ($fn,%form)=@_;
2574: my $ua=new LWP::UserAgent;
2575: my $request;
2576:
2577: $form{'no_update_last_known'}=1;
2578: &Apache::lonenc::check_encrypt(\$fn);
2579: if (%form) {
2580: $request=new HTTP::Request('POST',&absolute_url().$fn);
2581: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2582: } else {
2583: $request=new HTTP::Request('GET',&absolute_url().$fn);
2584: }
2585:
2586: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2587: my $response= $ua->request($request);
2588: my $content = Encode::decode_utf8($response->content);
2589: if (wantarray) {
2590: return ($content, $response);
2591: } else {
2592: return $content;
2593: }
2594: }
2595:
2596: sub externalssi {
2597: my ($url)=@_;
2598: my $ua=new LWP::UserAgent;
2599: my $request=new HTTP::Request('GET',$url);
2600: my $response=$ua->request($request);
2601: if (wantarray) {
2602: return ($response->content, $response);
2603: } else {
2604: return $response->content;
2605: }
2606: }
2607:
2608: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2609:
2610: sub allowuploaded {
2611: my ($srcurl,$url)=@_;
2612: $url=&clutter(&declutter($url));
2613: my $dir=$url;
2614: $dir=~s/\/[^\/]+$//;
2615: my %httpref=();
2616: my $httpurl=&hreflocation('',$url);
2617: $httpref{'httpref.'.$httpurl}=$srcurl;
2618: &Apache::lonnet::appenv(\%httpref);
2619: }
2620:
2621: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2622: # input: action, courseID, current domain, intended
2623: # path to file, source of file, instruction to parse file for objects,
2624: # ref to hash for embedded objects,
2625: # ref to hash for codebase of java objects.
2626: # reference to scalar to accommodate mime type determined
2627: # from File::MMagic if $parser = parse.
2628: #
2629: # output: url to file (if action was uploaddoc),
2630: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2631: #
2632: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2633: # course.
2634: #
2635: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2636: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2637: # course's home server.
2638: #
2639: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2640: # be copied from $source (current location) to
2641: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2642: # and will then be copied to
2643: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2644: # course's home server.
2645: #
2646: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2647: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2648: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2649: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2650: # in course's home server.
2651: #
2652:
2653: sub process_coursefile {
2654: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2655: $mimetype)=@_;
2656: my $fetchresult;
2657: my $home=&homeserver($docuname,$docudom);
2658: if ($action eq 'propagate') {
2659: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2660: $home);
2661: } else {
2662: my $fpath = '';
2663: my $fname = $file;
2664: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2665: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2666: my $filepath = &build_filepath($fpath);
2667: if ($action eq 'copy') {
2668: if ($source eq '') {
2669: $fetchresult = 'no source file';
2670: return $fetchresult;
2671: } else {
2672: my $destination = $filepath.'/'.$fname;
2673: rename($source,$destination);
2674: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2675: $home);
2676: }
2677: } elsif ($action eq 'uploaddoc') {
2678: open(my $fh,'>'.$filepath.'/'.$fname);
2679: print $fh $env{'form.'.$source};
2680: close($fh);
2681: if ($parser eq 'parse') {
2682: my $mm = new File::MMagic;
2683: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2684: if ($type eq 'text/html') {
2685: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2686: unless ($parse_result eq 'ok') {
2687: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2688: }
2689: }
2690: if (ref($mimetype)) {
2691: $$mimetype = $type;
2692: }
2693: }
2694: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2695: $home);
2696: if ($fetchresult eq 'ok') {
2697: return '/uploaded/'.$fpath.'/'.$fname;
2698: } else {
2699: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2700: ' to host '.$home.': '.$fetchresult);
2701: return '/adm/notfound.html';
2702: }
2703: }
2704: }
2705: unless ( $fetchresult eq 'ok') {
2706: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2707: ' to host '.$home.': '.$fetchresult);
2708: }
2709: return $fetchresult;
2710: }
2711:
2712: sub build_filepath {
2713: my ($fpath) = @_;
2714: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2715: unless ($fpath eq '') {
2716: my @parts=split('/',$fpath);
2717: foreach my $part (@parts) {
2718: $filepath.= '/'.$part;
2719: if ((-e $filepath)!=1) {
2720: mkdir($filepath,0777);
2721: }
2722: }
2723: }
2724: return $filepath;
2725: }
2726:
2727: sub store_edited_file {
2728: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2729: my $file = $primary_url;
2730: $file =~ s#^/uploaded/$docudom/$docuname/##;
2731: my $fpath = '';
2732: my $fname = $file;
2733: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2734: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2735: my $filepath = &build_filepath($fpath);
2736: open(my $fh,'>'.$filepath.'/'.$fname);
2737: print $fh $content;
2738: close($fh);
2739: my $home=&homeserver($docuname,$docudom);
2740: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2741: $home);
2742: if ($$fetchresult eq 'ok') {
2743: return '/uploaded/'.$fpath.'/'.$fname;
2744: } else {
2745: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2746: ' to host '.$home.': '.$$fetchresult);
2747: return '/adm/notfound.html';
2748: }
2749: }
2750:
2751: sub clean_filename {
2752: my ($fname,$args)=@_;
2753: # Replace Windows backslashes by forward slashes
2754: $fname=~s/\\/\//g;
2755: if (!$args->{'keep_path'}) {
2756: # Get rid of everything but the actual filename
2757: $fname=~s/^.*\/([^\/]+)$/$1/;
2758: }
2759: # Replace spaces by underscores
2760: $fname=~s/\s+/\_/g;
2761: # Replace all other weird characters by nothing
2762: $fname=~s{[^/\w\.\-]}{}g;
2763: # Replace all .\d. sequences with _\d. so they no longer look like version
2764: # numbers
2765: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2766: return $fname;
2767: }
2768: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2769: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2770: # image with the same aspect ratio as the original, but with dimensions which do
2771: # not exceed $resizewidth and $resizeheight.
2772:
2773: sub resizeImage {
2774: my ($img_path,$resizewidth,$resizeheight) = @_;
2775: my $ima = Image::Magick->new;
2776: my $resized;
2777: if (-e $img_path) {
2778: $ima->Read($img_path);
2779: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2780: my $width = $ima->Get('width');
2781: my $height = $ima->Get('height');
2782: if ($width > $resizewidth) {
2783: my $factor = $width/$resizewidth;
2784: my $newheight = $height/$factor;
2785: $ima->Scale(width=>$resizewidth,height=>$newheight);
2786: $resized = 1;
2787: }
2788: }
2789: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2790: my $width = $ima->Get('width');
2791: my $height = $ima->Get('height');
2792: if ($height > $resizeheight) {
2793: my $factor = $height/$resizeheight;
2794: my $newwidth = $width/$factor;
2795: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2796: $resized = 1;
2797: }
2798: }
2799: if ($resized) {
2800: $ima->Write($img_path);
2801: }
2802: }
2803: return;
2804: }
2805:
2806: # --------------- Take an uploaded file and put it into the userfiles directory
2807: # input: $formname - the contents of the file are in $env{"form.$formname"}
2808: # the desired filename is in $env{"form.$formname.filename"}
2809: # $context - possible values: coursedoc, existingfile, overwrite,
2810: # canceloverwrite, or ''.
2811: # if 'coursedoc': upload to the current course
2812: # if 'existingfile': write file to tmp/overwrites directory
2813: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2814: # $context is passed as argument to &finishuserfileupload
2815: # $subdir - directory in userfile to store the file into
2816: # $parser - instruction to parse file for objects ($parser = parse)
2817: # $allfiles - reference to hash for embedded objects
2818: # $codebase - reference to hash for codebase of java objects
2819: # $desuname - username for permanent storage of uploaded file
2820: # $dsetudom - domain for permanaent storage of uploaded file
2821: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2822: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2823: # $resizewidth - width (pixels) to which to resize uploaded image
2824: # $resizeheight - height (pixels) to which to resize uploaded image
2825: # $mimetype - reference to scalar to accommodate mime type determined
2826: # from File::MMagic.
2827: #
2828: # output: url of file in userspace, or error: <message>
2829: # or /adm/notfound.html if failure to upload occurse
2830:
2831: sub userfileupload {
2832: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2833: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2834: if (!defined($subdir)) { $subdir='unknown'; }
2835: my $fname=$env{'form.'.$formname.'.filename'};
2836: $fname=&clean_filename($fname);
2837: # See if there is anything left
2838: unless ($fname) { return 'error: no uploaded file'; }
2839: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2840: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2841: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2842: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2843: my $now = time;
2844: my $filepath;
2845: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2846: $filepath = 'tmp/helprequests/'.$now;
2847: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2848: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2849: '_'.$env{'user.domain'}.'/pending';
2850: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2851: my ($docuname,$docudom);
2852: if ($destudom) {
2853: $docudom = $destudom;
2854: } else {
2855: $docudom = $env{'user.domain'};
2856: }
2857: if ($destuname) {
2858: $docuname = $destuname;
2859: } else {
2860: $docuname = $env{'user.name'};
2861: }
2862: if (exists($env{'form.group'})) {
2863: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2864: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2865: }
2866: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2867: if ($context eq 'canceloverwrite') {
2868: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2869: if (-e $tempfile) {
2870: my @info = stat($tempfile);
2871: if ($info[9] eq $env{'form.timestamp'}) {
2872: unlink($tempfile);
2873: }
2874: }
2875: return;
2876: }
2877: }
2878: # Create the directory if not present
2879: my @parts=split(/\//,$filepath);
2880: my $fullpath = $perlvar{'lonDaemons'};
2881: for (my $i=0;$i<@parts;$i++) {
2882: $fullpath .= '/'.$parts[$i];
2883: if ((-e $fullpath)!=1) {
2884: mkdir($fullpath,0777);
2885: }
2886: }
2887: open(my $fh,'>'.$fullpath.'/'.$fname);
2888: print $fh $env{'form.'.$formname};
2889: close($fh);
2890: if ($context eq 'existingfile') {
2891: my @info = stat($fullpath.'/'.$fname);
2892: return ($fullpath.'/'.$fname,$info[9]);
2893: } else {
2894: return $fullpath.'/'.$fname;
2895: }
2896: }
2897: if ($subdir eq 'scantron') {
2898: $fname = 'scantron_orig_'.$fname;
2899: } else {
2900: $fname="$subdir/$fname";
2901: }
2902: if ($context eq 'coursedoc') {
2903: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2904: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2905: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2906: return &finishuserfileupload($docuname,$docudom,
2907: $formname,$fname,$parser,$allfiles,
2908: $codebase,$thumbwidth,$thumbheight,
2909: $resizewidth,$resizeheight,$context,$mimetype);
2910: } else {
2911: $fname=$env{'form.folder'}.'/'.$fname;
2912: return &process_coursefile('uploaddoc',$docuname,$docudom,
2913: $fname,$formname,$parser,
2914: $allfiles,$codebase,$mimetype);
2915: }
2916: } elsif (defined($destuname)) {
2917: my $docuname=$destuname;
2918: my $docudom=$destudom;
2919: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2920: $parser,$allfiles,$codebase,
2921: $thumbwidth,$thumbheight,
2922: $resizewidth,$resizeheight,$context,$mimetype);
2923: } else {
2924: my $docuname=$env{'user.name'};
2925: my $docudom=$env{'user.domain'};
2926: if (exists($env{'form.group'})) {
2927: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2928: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2929: }
2930: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2931: $parser,$allfiles,$codebase,
2932: $thumbwidth,$thumbheight,
2933: $resizewidth,$resizeheight,$context,$mimetype);
2934: }
2935: }
2936:
2937: sub finishuserfileupload {
2938: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2939: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2940: my $path=$docudom.'/'.$docuname.'/';
2941: my $filepath=$perlvar{'lonDocRoot'};
2942:
2943: my ($fnamepath,$file,$fetchthumb);
2944: $file=$fname;
2945: if ($fname=~m|/|) {
2946: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2947: $path.=$fnamepath.'/';
2948: }
2949: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2950: my $count;
2951: for ($count=4;$count<=$#parts;$count++) {
2952: $filepath.="/$parts[$count]";
2953: if ((-e $filepath)!=1) {
2954: mkdir($filepath,0777);
2955: }
2956: }
2957:
2958: # Save the file
2959: {
2960: if (!open(FH,'>'.$filepath.'/'.$file)) {
2961: &logthis('Failed to create '.$filepath.'/'.$file);
2962: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2963: return '/adm/notfound.html';
2964: }
2965: if ($context eq 'overwrite') {
2966: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2967: my $target = $filepath.'/'.$file;
2968: if (-e $source) {
2969: my @info = stat($source);
2970: if ($info[9] eq $env{'form.timestamp'}) {
2971: unless (&File::Copy::move($source,$target)) {
2972: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2973: return "Moving from $source failed";
2974: }
2975: } else {
2976: return "Temporary file: $source had unexpected date/time for last modification";
2977: }
2978: } else {
2979: return "Temporary file: $source missing";
2980: }
2981: } elsif (!print FH ($env{'form.'.$formname})) {
2982: &logthis('Failed to write to '.$filepath.'/'.$file);
2983: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2984: return '/adm/notfound.html';
2985: }
2986: close(FH);
2987: if ($resizewidth && $resizeheight) {
2988: my $mm = new File::MMagic;
2989: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2990: if ($mime_type =~ m{^image/}) {
2991: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2992: }
2993: }
2994: }
2995: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
2996: if (ref($mimetype)) {
2997: if ($$mimetype eq '') {
2998: my $mm = new File::MMagic;
2999: my $type = $mm->checktype_filename($filepath.'/'.$file);
3000: $$mimetype = $type;
3001: }
3002: }
3003: }
3004: if ($parser eq 'parse') {
3005: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3006: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3007: $allfiles,$codebase);
3008: unless ($parse_result eq 'ok') {
3009: &logthis('Failed to parse '.$filepath.$file.
3010: ' for embedded media: '.$parse_result);
3011: }
3012: }
3013: }
3014: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3015: my $input = $filepath.'/'.$file;
3016: my $output = $filepath.'/'.'tn-'.$file;
3017: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3018: system("convert -sample $thumbsize $input $output");
3019: if (-e $filepath.'/'.'tn-'.$file) {
3020: $fetchthumb = 1;
3021: }
3022: }
3023:
3024: # Notify homeserver to grep it
3025: #
3026: my $docuhome=&homeserver($docuname,$docudom);
3027: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3028: if ($fetchresult eq 'ok') {
3029: if ($fetchthumb) {
3030: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3031: if ($thumbresult ne 'ok') {
3032: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3033: $docuhome.': '.$thumbresult);
3034: }
3035: }
3036: #
3037: # Return the URL to it
3038: return '/uploaded/'.$path.$file;
3039: } else {
3040: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3041: ': '.$fetchresult);
3042: return '/adm/notfound.html';
3043: }
3044: }
3045:
3046: sub extract_embedded_items {
3047: my ($fullpath,$allfiles,$codebase,$content) = @_;
3048: my @state = ();
3049: my (%lastids,%related,%shockwave,%flashvars);
3050: my %javafiles = (
3051: codebase => '',
3052: code => '',
3053: archive => ''
3054: );
3055: my %mediafiles = (
3056: src => '',
3057: movie => '',
3058: );
3059: my $p;
3060: if ($content) {
3061: $p = HTML::LCParser->new($content);
3062: } else {
3063: $p = HTML::LCParser->new($fullpath);
3064: }
3065: while (my $t=$p->get_token()) {
3066: if ($t->[0] eq 'S') {
3067: my ($tagname, $attr) = ($t->[1],$t->[2]);
3068: push(@state, $tagname);
3069: if (lc($tagname) eq 'allow') {
3070: &add_filetype($allfiles,$attr->{'src'},'src');
3071: }
3072: if (lc($tagname) eq 'img') {
3073: &add_filetype($allfiles,$attr->{'src'},'src');
3074: }
3075: if (lc($tagname) eq 'a') {
3076: &add_filetype($allfiles,$attr->{'href'},'href');
3077: }
3078: if (lc($tagname) eq 'script') {
3079: my $src;
3080: if ($attr->{'archive'} =~ /\.jar$/i) {
3081: &add_filetype($allfiles,$attr->{'archive'},'archive');
3082: } else {
3083: if ($attr->{'src'} ne '') {
3084: $src = $attr->{'src'};
3085: &add_filetype($allfiles,$src,'src');
3086: }
3087: }
3088: my $text = $p->get_trimmed_text();
3089: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3090: my @swfargs = split(/,/,$1);
3091: foreach my $item (@swfargs) {
3092: $item =~ s/["']//g;
3093: $item =~ s/^\s+//;
3094: $item =~ s/\s+$//;
3095: }
3096: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3097: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3098: push(@{$related{$swfargs[0]}},$swfargs[2]);
3099: } else {
3100: $related{$swfargs[0]} = [$swfargs[2]];
3101: }
3102: }
3103: }
3104: }
3105: if (lc($tagname) eq 'link') {
3106: if (lc($attr->{'rel'}) eq 'stylesheet') {
3107: &add_filetype($allfiles,$attr->{'href'},'href');
3108: }
3109: }
3110: if (lc($tagname) eq 'object' ||
3111: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3112: foreach my $item (keys(%javafiles)) {
3113: $javafiles{$item} = '';
3114: }
3115: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3116: $lastids{lc($tagname)} = $attr->{'id'};
3117: }
3118: }
3119: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3120: my $name = lc($attr->{'name'});
3121: foreach my $item (keys(%javafiles)) {
3122: if ($name eq $item) {
3123: $javafiles{$item} = $attr->{'value'};
3124: last;
3125: }
3126: }
3127: my $pathfrom;
3128: foreach my $item (keys(%mediafiles)) {
3129: if ($name eq $item) {
3130: $pathfrom = $attr->{'value'};
3131: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3132: &add_filetype($allfiles,$pathfrom,$name);
3133: last;
3134: }
3135: }
3136: if ($name eq 'flashvars') {
3137: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3138: }
3139: if ($pathfrom ne '') {
3140: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3141: $pathfrom);
3142: }
3143: }
3144: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3145: foreach my $item (keys(%javafiles)) {
3146: if ($attr->{$item}) {
3147: $javafiles{$item} = $attr->{$item};
3148: last;
3149: }
3150: }
3151: foreach my $item (keys(%mediafiles)) {
3152: if ($attr->{$item}) {
3153: &add_filetype($allfiles,$attr->{$item},$item);
3154: last;
3155: }
3156: }
3157: if (lc($tagname) eq 'embed') {
3158: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3159: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3160: $attr->{'src'});
3161: }
3162: }
3163: }
3164: if ($t->[4] =~ m{/>$}) {
3165: pop(@state);
3166: }
3167: } elsif ($t->[0] eq 'E') {
3168: my ($tagname) = ($t->[1]);
3169: if ($javafiles{'codebase'} ne '') {
3170: $javafiles{'codebase'} .= '/';
3171: }
3172: if (lc($tagname) eq 'applet' ||
3173: lc($tagname) eq 'object' ||
3174: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3175: ) {
3176: foreach my $item (keys(%javafiles)) {
3177: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3178: my $file=$javafiles{'codebase'}.$javafiles{$item};
3179: &add_filetype($allfiles,$file,$item);
3180: }
3181: }
3182: }
3183: pop @state;
3184: }
3185: }
3186: foreach my $id (sort(keys(%flashvars))) {
3187: if ($shockwave{$id} ne '') {
3188: my @pairs = split(/\&/,$flashvars{$id});
3189: foreach my $pair (@pairs) {
3190: my ($key,$value) = split(/\=/,$pair);
3191: if ($key eq 'thumb') {
3192: &add_filetype($allfiles,$value,$key);
3193: } elsif ($key eq 'content') {
3194: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3195: my ($ext) = ($value =~ /\.([^.]+)$/);
3196: if ($ext ne '') {
3197: &add_filetype($allfiles,$path.$value,$ext);
3198: }
3199: }
3200: }
3201: }
3202: }
3203: return 'ok';
3204: }
3205:
3206: sub add_filetype {
3207: my ($allfiles,$file,$type)=@_;
3208: if (exists($allfiles->{$file})) {
3209: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3210: push(@{$allfiles->{$file}}, &escape($type));
3211: }
3212: } else {
3213: @{$allfiles->{$file}} = (&escape($type));
3214: }
3215: }
3216:
3217: sub embedded_dependency {
3218: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3219: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3220: if (($identifier ne '') &&
3221: (ref($related->{$identifier}) eq 'ARRAY') &&
3222: ($pathfrom ne '')) {
3223: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3224: foreach my $dep (@{$related->{$identifier}}) {
3225: &add_filetype($allfiles,$path.$dep,'object');
3226: }
3227: }
3228: }
3229: return;
3230: }
3231:
3232: sub removeuploadedurl {
3233: my ($url)=@_;
3234: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3235: return &removeuserfile($uname,$udom,$fname);
3236: }
3237:
3238: sub removeuserfile {
3239: my ($docuname,$docudom,$fname)=@_;
3240: my $home=&homeserver($docuname,$docudom);
3241: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3242: if ($result eq 'ok') {
3243: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3244: my $metafile = $fname.'.meta';
3245: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3246: my $url = "/uploaded/$docudom/$docuname/$fname";
3247: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3248: my $sqlresult =
3249: &update_portfolio_table($docuname,$docudom,$file,
3250: 'portfolio_metadata',$group,
3251: 'delete');
3252: }
3253: }
3254: return $result;
3255: }
3256:
3257: sub mkdiruserfile {
3258: my ($docuname,$docudom,$dir)=@_;
3259: my $home=&homeserver($docuname,$docudom);
3260: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3261: }
3262:
3263: sub renameuserfile {
3264: my ($docuname,$docudom,$old,$new)=@_;
3265: my $home=&homeserver($docuname,$docudom);
3266: my $result = &reply("renameuserfile:$docudom:$docuname:".
3267: &escape("$old").':'.&escape("$new"),$home);
3268: if ($result eq 'ok') {
3269: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3270: my $oldmeta = $old.'.meta';
3271: my $newmeta = $new.'.meta';
3272: my $metaresult =
3273: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3274: my $url = "/uploaded/$docudom/$docuname/$old";
3275: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3276: my $sqlresult =
3277: &update_portfolio_table($docuname,$docudom,$file,
3278: 'portfolio_metadata',$group,
3279: 'delete');
3280: }
3281: }
3282: return $result;
3283: }
3284:
3285: # ------------------------------------------------------------------------- Log
3286:
3287: sub log {
3288: my ($dom,$nam,$hom,$what)=@_;
3289: return critical("log:$dom:$nam:$what",$hom);
3290: }
3291:
3292: # ------------------------------------------------------------------ Course Log
3293: #
3294: # This routine flushes several buffers of non-mission-critical nature
3295: #
3296:
3297: sub flushcourselogs {
3298: &logthis('Flushing log buffers');
3299: #
3300: # course logs
3301: # This is a log of all transactions in a course, which can be used
3302: # for data mining purposes
3303: #
3304: # It also collects the courseid database, which lists last transaction
3305: # times and course titles for all courseids
3306: #
3307: my %courseidbuffer=();
3308: foreach my $crsid (keys(%courselogs)) {
3309: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3310: &escape($courselogs{$crsid}),
3311: $coursehombuf{$crsid}) eq 'ok') {
3312: delete $courselogs{$crsid};
3313: } else {
3314: &logthis('Failed to flush log buffer for '.$crsid);
3315: if (length($courselogs{$crsid})>40000) {
3316: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3317: " exceeded maximum size, deleting.</font>");
3318: delete $courselogs{$crsid};
3319: }
3320: }
3321: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3322: 'description' => $coursedescrbuf{$crsid},
3323: 'inst_code' => $courseinstcodebuf{$crsid},
3324: 'type' => $coursetypebuf{$crsid},
3325: 'owner' => $courseownerbuf{$crsid},
3326: };
3327: }
3328: #
3329: # Write course id database (reverse lookup) to homeserver of courses
3330: # Is used in pickcourse
3331: #
3332: foreach my $crs_home (keys(%courseidbuffer)) {
3333: my $response = &courseidput(&host_domain($crs_home),
3334: $courseidbuffer{$crs_home},
3335: $crs_home,'timeonly');
3336: }
3337: #
3338: # File accesses
3339: # Writes to the dynamic metadata of resources to get hit counts, etc.
3340: #
3341: foreach my $entry (keys(%accesshash)) {
3342: if ($entry =~ /___count$/) {
3343: my ($dom,$name);
3344: ($dom,$name,undef)=
3345: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3346: if (! defined($dom) || $dom eq '' ||
3347: ! defined($name) || $name eq '') {
3348: my $cid = $env{'request.course.id'};
3349: $dom = $env{'request.'.$cid.'.domain'};
3350: $name = $env{'request.'.$cid.'.num'};
3351: }
3352: my $value = $accesshash{$entry};
3353: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3354: my %temphash=($url => $value);
3355: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3356: if ($result eq 'ok') {
3357: delete $accesshash{$entry};
3358: }
3359: } else {
3360: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3361: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3362: my %temphash=($entry => $accesshash{$entry});
3363: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3364: delete $accesshash{$entry};
3365: }
3366: }
3367: }
3368: #
3369: # Roles
3370: # Reverse lookup of user roles for course faculty/staff and co-authorship
3371: #
3372: foreach my $entry (keys(%userrolehash)) {
3373: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3374: split(/\:/,$entry);
3375: if (&Apache::lonnet::put('nohist_userroles',
3376: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3377: $rudom,$runame) eq 'ok') {
3378: delete $userrolehash{$entry};
3379: }
3380: }
3381: #
3382: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3383: #
3384: my %domrolebuffer = ();
3385: foreach my $entry (keys(%domainrolehash)) {
3386: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3387: if ($domrolebuffer{$rudom}) {
3388: $domrolebuffer{$rudom}.='&'.&escape($entry).
3389: '='.&escape($domainrolehash{$entry});
3390: } else {
3391: $domrolebuffer{$rudom}.=&escape($entry).
3392: '='.&escape($domainrolehash{$entry});
3393: }
3394: delete $domainrolehash{$entry};
3395: }
3396: foreach my $dom (keys(%domrolebuffer)) {
3397: my %servers = &get_servers($dom,'library');
3398: foreach my $tryserver (keys(%servers)) {
3399: unless (&reply('domroleput:'.$dom.':'.
3400: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3401: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3402: }
3403: }
3404: }
3405: $dumpcount++;
3406: }
3407:
3408: sub courselog {
3409: my $what=shift;
3410: $what=time.':'.$what;
3411: unless ($env{'request.course.id'}) { return ''; }
3412: $coursedombuf{$env{'request.course.id'}}=
3413: $env{'course.'.$env{'request.course.id'}.'.domain'};
3414: $coursenumbuf{$env{'request.course.id'}}=
3415: $env{'course.'.$env{'request.course.id'}.'.num'};
3416: $coursehombuf{$env{'request.course.id'}}=
3417: $env{'course.'.$env{'request.course.id'}.'.home'};
3418: $coursedescrbuf{$env{'request.course.id'}}=
3419: $env{'course.'.$env{'request.course.id'}.'.description'};
3420: $courseinstcodebuf{$env{'request.course.id'}}=
3421: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3422: $courseownerbuf{$env{'request.course.id'}}=
3423: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3424: $coursetypebuf{$env{'request.course.id'}}=
3425: $env{'course.'.$env{'request.course.id'}.'.type'};
3426: if (defined $courselogs{$env{'request.course.id'}}) {
3427: $courselogs{$env{'request.course.id'}}.='&'.$what;
3428: } else {
3429: $courselogs{$env{'request.course.id'}}.=$what;
3430: }
3431: if (length($courselogs{$env{'request.course.id'}})>4048) {
3432: &flushcourselogs();
3433: }
3434: }
3435:
3436: sub courseacclog {
3437: my $fnsymb=shift;
3438: unless ($env{'request.course.id'}) { return ''; }
3439: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3440: if ($fnsymb=~/$LONCAPA::assess_re/) {
3441: $what.=':POST';
3442: # FIXME: Probably ought to escape things....
3443: foreach my $key (keys(%env)) {
3444: if ($key=~/^form\.(.*)/) {
3445: my $formitem = $1;
3446: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3447: $what.=':'.$formitem.'='.$env{$key};
3448: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3449: $what.=':'.$formitem.'='.$env{$key};
3450: }
3451: }
3452: }
3453: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3454: # FIXME: We should not be depending on a form parameter that someone
3455: # editing lonsearchcat.pm might change in the future.
3456: if ($env{'form.phase'} eq 'course_search') {
3457: $what.= ':POST';
3458: # FIXME: Probably ought to escape things....
3459: foreach my $element ('courseexp','crsfulltext','crsrelated',
3460: 'crsdiscuss') {
3461: $what.=':'.$element.'='.$env{'form.'.$element};
3462: }
3463: }
3464: }
3465: &courselog($what);
3466: }
3467:
3468: sub countacc {
3469: my $url=&declutter(shift);
3470: return if (! defined($url) || $url eq '');
3471: unless ($env{'request.course.id'}) { return ''; }
3472: #
3473: # Mark that this url was used in this course
3474: #
3475: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3476: #
3477: # Increase the access count for this resource in this child process
3478: #
3479: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3480: $accesshash{$key}++;
3481: }
3482:
3483: sub linklog {
3484: my ($from,$to)=@_;
3485: $from=&declutter($from);
3486: $to=&declutter($to);
3487: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3488: $accesshash{$to.'___'.$from.'___goto'}=1;
3489: }
3490:
3491: sub statslog {
3492: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3493: if ($users<2) { return; }
3494: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3495: 'course' => $env{'request.course.id'},
3496: 'sections' => '"all"',
3497: 'num_students' => $users,
3498: 'part' => $part,
3499: 'symb' => $symb,
3500: 'mean_tries' => $av_attempts,
3501: 'deg_of_diff' => $degdiff});
3502: foreach my $key (keys(%dynstore)) {
3503: $accesshash{$key}=$dynstore{$key};
3504: }
3505: }
3506:
3507: sub userrolelog {
3508: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3509: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3510: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3511: $userrolehash
3512: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3513: =$tend.':'.$tstart;
3514: }
3515: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3516: $userrolehash
3517: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3518: =$tend.':'.$tstart;
3519: }
3520: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3521: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3522: $domainrolehash
3523: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3524: = $tend.':'.$tstart;
3525: }
3526: }
3527:
3528: sub courserolelog {
3529: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3530: if (($trole eq 'cc') || ($trole eq 'in') ||
3531: ($trole eq 'ep') || ($trole eq 'ad') ||
3532: ($trole eq 'ta') || ($trole eq 'st') ||
3533: ($trole=~/^cr/) || ($trole eq 'gr') ||
3534: ($trole eq 'co')) {
3535: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3536: my $cdom = $1;
3537: my $cnum = $2;
3538: my $sec = $3;
3539: my $namespace = 'rolelog';
3540: my %storehash = (
3541: role => $trole,
3542: start => $tstart,
3543: end => $tend,
3544: selfenroll => $selfenroll,
3545: context => $context,
3546: );
3547: if ($trole eq 'gr') {
3548: $namespace = 'groupslog';
3549: $storehash{'group'} = $sec;
3550: } else {
3551: $storehash{'section'} = $sec;
3552: }
3553: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3554: if (($trole ne 'st') || ($sec ne '')) {
3555: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3556: }
3557: }
3558: }
3559: return;
3560: }
3561:
3562: sub get_course_adv_roles {
3563: my ($cid,$codes) = @_;
3564: $cid=$env{'request.course.id'} unless (defined($cid));
3565: my %coursehash=&coursedescription($cid);
3566: my $crstype = &Apache::loncommon::course_type($cid);
3567: my %nothide=();
3568: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3569: if ($user !~ /:/) {
3570: $nothide{join(':',split(/[\@]/,$user))}=1;
3571: } else {
3572: $nothide{$user}=1;
3573: }
3574: }
3575: my %returnhash=();
3576: my %dumphash=
3577: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3578: my $now=time;
3579: my %privileged;
3580: foreach my $entry (keys(%dumphash)) {
3581: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3582: if (($tstart) && ($tstart<0)) { next; }
3583: if (($tend) && ($tend<$now)) { next; }
3584: if (($tstart) && ($now<$tstart)) { next; }
3585: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3586: if ($username eq '' || $domain eq '') { next; }
3587: unless (ref($privileged{$domain}) eq 'HASH') {
3588: my %dompersonnel =
3589: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3590: $privileged{$domain} = {};
3591: foreach my $server (keys(%dompersonnel)) {
3592: if (ref($dompersonnel{$server}) eq 'HASH') {
3593: foreach my $user (keys(%{$dompersonnel{$server}})) {
3594: my ($trole,$uname,$udom) = split(/:/,$user);
3595: $privileged{$udom}{$uname} = 1;
3596: }
3597: }
3598: }
3599: }
3600: if ((exists($privileged{$domain}{$username})) &&
3601: (!$nothide{$username.':'.$domain})) { next; }
3602: if ($role eq 'cr') { next; }
3603: if ($codes) {
3604: if ($section) { $role .= ':'.$section; }
3605: if ($returnhash{$role}) {
3606: $returnhash{$role}.=','.$username.':'.$domain;
3607: } else {
3608: $returnhash{$role}=$username.':'.$domain;
3609: }
3610: } else {
3611: my $key=&plaintext($role,$crstype);
3612: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3613: if ($returnhash{$key}) {
3614: $returnhash{$key}.=','.$username.':'.$domain;
3615: } else {
3616: $returnhash{$key}=$username.':'.$domain;
3617: }
3618: }
3619: }
3620: return %returnhash;
3621: }
3622:
3623: sub get_my_roles {
3624: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3625: unless (defined($uname)) { $uname=$env{'user.name'}; }
3626: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3627: my (%dumphash,%nothide);
3628: if ($context eq 'userroles') {
3629: %dumphash = &dump('roles',$udom,$uname);
3630: } else {
3631: %dumphash=
3632: &dump('nohist_userroles',$udom,$uname);
3633: if ($hidepriv) {
3634: my %coursehash=&coursedescription($udom.'_'.$uname);
3635: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3636: if ($user !~ /:/) {
3637: $nothide{join(':',split(/[\@]/,$user))} = 1;
3638: } else {
3639: $nothide{$user} = 1;
3640: }
3641: }
3642: }
3643: }
3644: my %returnhash=();
3645: my $now=time;
3646: my %privileged;
3647: foreach my $entry (keys(%dumphash)) {
3648: my ($role,$tend,$tstart);
3649: if ($context eq 'userroles') {
3650: next if ($entry =~ /^rolesdef/);
3651: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3652: } else {
3653: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3654: }
3655: if (($tstart) && ($tstart<0)) { next; }
3656: my $status = 'active';
3657: if (($tend) && ($tend<=$now)) {
3658: $status = 'previous';
3659: }
3660: if (($tstart) && ($now<$tstart)) {
3661: $status = 'future';
3662: }
3663: if (ref($types) eq 'ARRAY') {
3664: if (!grep(/^\Q$status\E$/,@{$types})) {
3665: next;
3666: }
3667: } else {
3668: if ($status ne 'active') {
3669: next;
3670: }
3671: }
3672: my ($rolecode,$username,$domain,$section,$area);
3673: if ($context eq 'userroles') {
3674: ($area,$rolecode) = split(/_/,$entry);
3675: (undef,$domain,$username,$section) = split(/\//,$area);
3676: } else {
3677: ($role,$username,$domain,$section) = split(/\:/,$entry);
3678: }
3679: if (ref($roledoms) eq 'ARRAY') {
3680: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3681: next;
3682: }
3683: }
3684: if (ref($roles) eq 'ARRAY') {
3685: if (!grep(/^\Q$role\E$/,@{$roles})) {
3686: if ($role =~ /^cr\//) {
3687: if (!grep(/^cr$/,@{$roles})) {
3688: next;
3689: }
3690: } elsif ($role =~ /^gr\//) {
3691: if (!grep(/^gr$/,@{$roles})) {
3692: next;
3693: }
3694: } else {
3695: next;
3696: }
3697: }
3698: }
3699: if ($hidepriv) {
3700: if ($context eq 'userroles') {
3701: if ((&privileged($username,$domain)) &&
3702: (!$nothide{$username.':'.$domain})) {
3703: next;
3704: }
3705: } else {
3706: unless (ref($privileged{$domain}) eq 'HASH') {
3707: my %dompersonnel =
3708: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3709: $privileged{$domain} = {};
3710: if (keys(%dompersonnel)) {
3711: foreach my $server (keys(%dompersonnel)) {
3712: if (ref($dompersonnel{$server}) eq 'HASH') {
3713: foreach my $user (keys(%{$dompersonnel{$server}})) {
3714: my ($trole,$uname,$udom) = split(/:/,$user);
3715: $privileged{$udom}{$uname} = $trole;
3716: }
3717: }
3718: }
3719: }
3720: }
3721: if (exists($privileged{$domain}{$username})) {
3722: if (!$nothide{$username.':'.$domain}) {
3723: next;
3724: }
3725: }
3726: }
3727: }
3728: if ($withsec) {
3729: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3730: $tstart.':'.$tend;
3731: } else {
3732: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3733: }
3734: }
3735: return %returnhash;
3736: }
3737:
3738: # ----------------------------------------------------- Frontpage Announcements
3739: #
3740: #
3741:
3742: sub postannounce {
3743: my ($server,$text)=@_;
3744: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3745: unless ($text=~/\w/) { $text=''; }
3746: return &reply('setannounce:'.&escape($text),$server);
3747: }
3748:
3749: sub getannounce {
3750:
3751: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3752: my $announcement='';
3753: while (my $line = <$fh>) { $announcement .= $line; }
3754: close($fh);
3755: if ($announcement=~/\w/) {
3756: return
3757: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3758: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3759: } else {
3760: return '';
3761: }
3762: } else {
3763: return '';
3764: }
3765: }
3766:
3767: # ---------------------------------------------------------- Course ID routines
3768: # Deal with domain's nohist_courseid.db files
3769: #
3770:
3771: sub courseidput {
3772: my ($domain,$storehash,$coursehome,$caller) = @_;
3773: return unless (ref($storehash) eq 'HASH');
3774: my $outcome;
3775: if ($caller eq 'timeonly') {
3776: my $cids = '';
3777: foreach my $item (keys(%$storehash)) {
3778: $cids.=&escape($item).'&';
3779: }
3780: $cids=~s/\&$//;
3781: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3782: $coursehome);
3783: } else {
3784: my $items = '';
3785: foreach my $item (keys(%$storehash)) {
3786: $items.= &escape($item).'='.
3787: &freeze_escape($$storehash{$item}).'&';
3788: }
3789: $items=~s/\&$//;
3790: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3791: $coursehome);
3792: }
3793: if ($outcome eq 'unknown_cmd') {
3794: my $what;
3795: foreach my $cid (keys(%$storehash)) {
3796: $what .= &escape($cid).'=';
3797: foreach my $item ('description','inst_code','owner','type') {
3798: $what .= &escape($storehash->{$cid}{$item}).':';
3799: }
3800: $what =~ s/\:$/&/;
3801: }
3802: $what =~ s/\&$//;
3803: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3804: } else {
3805: return $outcome;
3806: }
3807: }
3808:
3809: sub courseiddump {
3810: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3811: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3812: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3813: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3814: my $as_hash = 1;
3815: my %returnhash;
3816: if (!$domfilter) { $domfilter=''; }
3817: my %libserv = &all_library();
3818: foreach my $tryserver (keys(%libserv)) {
3819: if ( ( $hostidflag == 1
3820: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3821: || (!defined($hostidflag)) ) {
3822:
3823: if (($domfilter eq '') ||
3824: (&host_domain($tryserver) eq $domfilter)) {
3825: my $rep;
3826: if (grep { $_ eq $tryserver } current_machine_ids()) {
3827: $rep = LONCAPA::Lond::dump_course_id_handler(
3828: join(":", (&host_domain($tryserver), $sincefilter,
3829: &escape($descfilter), &escape($instcodefilter),
3830: &escape($ownerfilter), &escape($coursefilter),
3831: &escape($typefilter), &escape($regexp_ok),
3832: $as_hash, &escape($selfenrollonly),
3833: &escape($catfilter), $showhidden, $caller,
3834: &escape($cloner), &escape($cc_clone), $cloneonly,
3835: &escape($createdbefore), &escape($createdafter),
3836: &escape($creationcontext), $domcloner)));
3837: } else {
3838: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
3839: $sincefilter.':'.&escape($descfilter).':'.
3840: &escape($instcodefilter).':'.&escape($ownerfilter).
3841: ':'.&escape($coursefilter).':'.&escape($typefilter).
3842: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3843: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3844: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3845: &escape($cc_clone).':'.$cloneonly.':'.
3846: &escape($createdbefore).':'.&escape($createdafter).':'.
3847: &escape($creationcontext).':'.$domcloner,
3848: $tryserver);
3849: }
3850:
3851: my @pairs=split(/\&/,$rep);
3852: foreach my $item (@pairs) {
3853: my ($key,$value)=split(/\=/,$item,2);
3854: $key = &unescape($key);
3855: next if ($key =~ /^error: 2 /);
3856: my $result = &thaw_unescape($value);
3857: if (ref($result) eq 'HASH') {
3858: $returnhash{$key}=$result;
3859: } else {
3860: my @responses = split(/:/,$value);
3861: my @items = ('description','inst_code','owner','type');
3862: for (my $i=0; $i<@responses; $i++) {
3863: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3864: }
3865: }
3866: }
3867: }
3868: }
3869: }
3870: return %returnhash;
3871: }
3872:
3873: sub courselastaccess {
3874: my ($cdom,$cnum,$hostidref) = @_;
3875: my %returnhash;
3876: if ($cdom && $cnum) {
3877: my $chome = &homeserver($cnum,$cdom);
3878: if ($chome ne 'no_host') {
3879: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3880: &extract_lastaccess(\%returnhash,$rep);
3881: }
3882: } else {
3883: if (!$cdom) { $cdom=''; }
3884: my %libserv = &all_library();
3885: foreach my $tryserver (keys(%libserv)) {
3886: if (ref($hostidref) eq 'ARRAY') {
3887: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3888: }
3889: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3890: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3891: &extract_lastaccess(\%returnhash,$rep);
3892: }
3893: }
3894: }
3895: return %returnhash;
3896: }
3897:
3898: sub extract_lastaccess {
3899: my ($returnhash,$rep) = @_;
3900: if (ref($returnhash) eq 'HASH') {
3901: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3902: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3903: $rep eq '') {
3904: my @pairs=split(/\&/,$rep);
3905: foreach my $item (@pairs) {
3906: my ($key,$value)=split(/\=/,$item,2);
3907: $key = &unescape($key);
3908: next if ($key =~ /^error: 2 /);
3909: $returnhash->{$key} = &thaw_unescape($value);
3910: }
3911: }
3912: }
3913: return;
3914: }
3915:
3916: # ---------------------------------------------------------- DC e-mail
3917:
3918: sub dcmailput {
3919: my ($domain,$msgid,$message,$server)=@_;
3920: my $status = &Apache::lonnet::critical(
3921: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3922: &escape($message),$server);
3923: return $status;
3924: }
3925:
3926: sub dcmaildump {
3927: my ($dom,$startdate,$enddate,$senders) = @_;
3928: my %returnhash=();
3929:
3930: if (defined(&domain($dom,'primary'))) {
3931: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3932: &escape($enddate).':';
3933: my @esc_senders=map { &escape($_)} @$senders;
3934: $cmd.=&escape(join('&',@esc_senders));
3935: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3936: my ($key,$value) = split(/\=/,$line,2);
3937: if (($key) && ($value)) {
3938: $returnhash{&unescape($key)} = &unescape($value);
3939: }
3940: }
3941: }
3942: return %returnhash;
3943: }
3944: # ---------------------------------------------------------- Domain roles
3945:
3946: sub get_domain_roles {
3947: my ($dom,$roles,$startdate,$enddate)=@_;
3948: if ((!defined($startdate)) || ($startdate eq '')) {
3949: $startdate = '.';
3950: }
3951: if ((!defined($enddate)) || ($enddate eq '')) {
3952: $enddate = '.';
3953: }
3954: my $rolelist;
3955: if (ref($roles) eq 'ARRAY') {
3956: $rolelist = join(':',@{$roles});
3957: }
3958: my %personnel = ();
3959:
3960: my %servers = &get_servers($dom,'library');
3961: foreach my $tryserver (keys(%servers)) {
3962: %{$personnel{$tryserver}}=();
3963: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3964: &escape($startdate).':'.
3965: &escape($enddate).':'.
3966: &escape($rolelist), $tryserver))) {
3967: my ($key,$value) = split(/\=/,$line,2);
3968: if (($key) && ($value)) {
3969: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3970: }
3971: }
3972: }
3973: return %personnel;
3974: }
3975:
3976: # ----------------------------------------------------------- Interval timing
3977:
3978: {
3979: # Caches needed for speedup of navmaps
3980: # We don't want to cache this for very long at all (5 seconds at most)
3981: #
3982: # The user for whom we cache
3983: my $cachedkey='';
3984: # The cached times for this user
3985: my %cachedtimes=();
3986: # When this was last done
3987: my $cachedtime=();
3988:
3989: sub load_all_first_access {
3990: my ($uname,$udom)=@_;
3991: if (($cachedkey eq $uname.':'.$udom) &&
3992: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
3993: return;
3994: }
3995: $cachedtime=time;
3996: $cachedkey=$uname.':'.$udom;
3997: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
3998: }
3999:
4000: sub get_first_access {
4001: my ($type,$argsymb,$argmap)=@_;
4002: my ($symb,$courseid,$udom,$uname)=&whichuser();
4003: if ($argsymb) { $symb=$argsymb; }
4004: my ($map,$id,$res)=&decode_symb($symb);
4005: if ($argmap) { $map = $argmap; }
4006: if ($type eq 'course') {
4007: $res='course';
4008: } elsif ($type eq 'map') {
4009: $res=&symbread($map);
4010: } else {
4011: $res=$symb;
4012: }
4013: &load_all_first_access($uname,$udom);
4014: return $cachedtimes{"$courseid\0$res"};
4015: }
4016:
4017: sub set_first_access {
4018: my ($type,$interval)=@_;
4019: my ($symb,$courseid,$udom,$uname)=&whichuser();
4020: my ($map,$id,$res)=&decode_symb($symb);
4021: if ($type eq 'course') {
4022: $res='course';
4023: } elsif ($type eq 'map') {
4024: $res=&symbread($map);
4025: } else {
4026: $res=$symb;
4027: }
4028: $cachedkey='';
4029: my $firstaccess=&get_first_access($type,$symb,$map);
4030: if (!$firstaccess) {
4031: my $start = time;
4032: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4033: $udom,$uname);
4034: if ($putres eq 'ok') {
4035: &put('timerinterval',{"$courseid\0$res"=>$interval},
4036: $udom,$uname);
4037: &appenv(
4038: {
4039: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4040: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4041: }
4042: );
4043: }
4044: return $putres;
4045: }
4046: return 'already_set';
4047: }
4048: }
4049: # --------------------------------------------- Set Expire Date for Spreadsheet
4050:
4051: sub expirespread {
4052: my ($uname,$udom,$stype,$usymb)=@_;
4053: my $cid=$env{'request.course.id'};
4054: if ($cid) {
4055: my $now=time;
4056: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4057: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4058: $env{'course.'.$cid.'.num'}.
4059: ':nohist_expirationdates:'.
4060: &escape($key).'='.$now,
4061: $env{'course.'.$cid.'.home'})
4062: }
4063: return 'ok';
4064: }
4065:
4066: # ----------------------------------------------------- Devalidate Spreadsheets
4067:
4068: sub devalidate {
4069: my ($symb,$uname,$udom)=@_;
4070: my $cid=$env{'request.course.id'};
4071: if ($cid) {
4072: # delete the stored spreadsheets for
4073: # - the student level sheet of this user in course's homespace
4074: # - the assessment level sheet for this resource
4075: # for this user in user's homespace
4076: # - current conditional state info
4077: my $key=$uname.':'.$udom.':';
4078: my $status=
4079: &del('nohist_calculatedsheets',
4080: [$key.'studentcalc:'],
4081: $env{'course.'.$cid.'.domain'},
4082: $env{'course.'.$cid.'.num'})
4083: .' '.
4084: &del('nohist_calculatedsheets_'.$cid,
4085: [$key.'assesscalc:'.$symb],$udom,$uname);
4086: unless ($status eq 'ok ok') {
4087: &logthis('Could not devalidate spreadsheet '.
4088: $uname.' at '.$udom.' for '.
4089: $symb.': '.$status);
4090: }
4091: &delenv('user.state.'.$cid);
4092: }
4093: }
4094:
4095: sub get_scalar {
4096: my ($string,$end) = @_;
4097: my $value;
4098: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4099: $value = $1;
4100: } elsif ($$string =~ s/^([^&]*?)&//) {
4101: $value = $1;
4102: }
4103: return &unescape($value);
4104: }
4105:
4106: sub array2str {
4107: my (@array) = @_;
4108: my $result=&arrayref2str(\@array);
4109: $result=~s/^__ARRAY_REF__//;
4110: $result=~s/__END_ARRAY_REF__$//;
4111: return $result;
4112: }
4113:
4114: sub arrayref2str {
4115: my ($arrayref) = @_;
4116: my $result='__ARRAY_REF__';
4117: foreach my $elem (@$arrayref) {
4118: if(ref($elem) eq 'ARRAY') {
4119: $result.=&arrayref2str($elem).'&';
4120: } elsif(ref($elem) eq 'HASH') {
4121: $result.=&hashref2str($elem).'&';
4122: } elsif(ref($elem)) {
4123: #print("Got a ref of ".(ref($elem))." skipping.");
4124: } else {
4125: $result.=&escape($elem).'&';
4126: }
4127: }
4128: $result=~s/\&$//;
4129: $result .= '__END_ARRAY_REF__';
4130: return $result;
4131: }
4132:
4133: sub hash2str {
4134: my (%hash) = @_;
4135: my $result=&hashref2str(\%hash);
4136: $result=~s/^__HASH_REF__//;
4137: $result=~s/__END_HASH_REF__$//;
4138: return $result;
4139: }
4140:
4141: sub hashref2str {
4142: my ($hashref)=@_;
4143: my $result='__HASH_REF__';
4144: foreach my $key (sort(keys(%$hashref))) {
4145: if (ref($key) eq 'ARRAY') {
4146: $result.=&arrayref2str($key).'=';
4147: } elsif (ref($key) eq 'HASH') {
4148: $result.=&hashref2str($key).'=';
4149: } elsif (ref($key)) {
4150: $result.='=';
4151: #print("Got a ref of ".(ref($key))." skipping.");
4152: } else {
4153: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4154: }
4155:
4156: if(ref($hashref->{$key}) eq 'ARRAY') {
4157: $result.=&arrayref2str($hashref->{$key}).'&';
4158: } elsif(ref($hashref->{$key}) eq 'HASH') {
4159: $result.=&hashref2str($hashref->{$key}).'&';
4160: } elsif(ref($hashref->{$key})) {
4161: $result.='&';
4162: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4163: } else {
4164: $result.=&escape($hashref->{$key}).'&';
4165: }
4166: }
4167: $result=~s/\&$//;
4168: $result .= '__END_HASH_REF__';
4169: return $result;
4170: }
4171:
4172: sub str2hash {
4173: my ($string)=@_;
4174: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4175: return %$hash;
4176: }
4177:
4178: sub str2hashref {
4179: my ($string) = @_;
4180:
4181: my %hash;
4182:
4183: if($string !~ /^__HASH_REF__/) {
4184: if (! ($string eq '' || !defined($string))) {
4185: $hash{'error'}='Not hash reference';
4186: }
4187: return (\%hash, $string);
4188: }
4189:
4190: $string =~ s/^__HASH_REF__//;
4191:
4192: while($string !~ /^__END_HASH_REF__/) {
4193: #key
4194: my $key='';
4195: if($string =~ /^__HASH_REF__/) {
4196: ($key, $string)=&str2hashref($string);
4197: if(defined($key->{'error'})) {
4198: $hash{'error'}='Bad data';
4199: return (\%hash, $string);
4200: }
4201: } elsif($string =~ /^__ARRAY_REF__/) {
4202: ($key, $string)=&str2arrayref($string);
4203: if($key->[0] eq 'Array reference error') {
4204: $hash{'error'}='Bad data';
4205: return (\%hash, $string);
4206: }
4207: } else {
4208: $string =~ s/^(.*?)=//;
4209: $key=&unescape($1);
4210: }
4211: $string =~ s/^=//;
4212:
4213: #value
4214: my $value='';
4215: if($string =~ /^__HASH_REF__/) {
4216: ($value, $string)=&str2hashref($string);
4217: if(defined($value->{'error'})) {
4218: $hash{'error'}='Bad data';
4219: return (\%hash, $string);
4220: }
4221: } elsif($string =~ /^__ARRAY_REF__/) {
4222: ($value, $string)=&str2arrayref($string);
4223: if($value->[0] eq 'Array reference error') {
4224: $hash{'error'}='Bad data';
4225: return (\%hash, $string);
4226: }
4227: } else {
4228: $value=&get_scalar(\$string,'__END_HASH_REF__');
4229: }
4230: $string =~ s/^&//;
4231:
4232: $hash{$key}=$value;
4233: }
4234:
4235: $string =~ s/^__END_HASH_REF__//;
4236:
4237: return (\%hash, $string);
4238: }
4239:
4240: sub str2array {
4241: my ($string)=@_;
4242: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4243: return @$array;
4244: }
4245:
4246: sub str2arrayref {
4247: my ($string) = @_;
4248: my @array;
4249:
4250: if($string !~ /^__ARRAY_REF__/) {
4251: if (! ($string eq '' || !defined($string))) {
4252: $array[0]='Array reference error';
4253: }
4254: return (\@array, $string);
4255: }
4256:
4257: $string =~ s/^__ARRAY_REF__//;
4258:
4259: while($string !~ /^__END_ARRAY_REF__/) {
4260: my $value='';
4261: if($string =~ /^__HASH_REF__/) {
4262: ($value, $string)=&str2hashref($string);
4263: if(defined($value->{'error'})) {
4264: $array[0] ='Array reference error';
4265: return (\@array, $string);
4266: }
4267: } elsif($string =~ /^__ARRAY_REF__/) {
4268: ($value, $string)=&str2arrayref($string);
4269: if($value->[0] eq 'Array reference error') {
4270: $array[0] ='Array reference error';
4271: return (\@array, $string);
4272: }
4273: } else {
4274: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4275: }
4276: $string =~ s/^&//;
4277:
4278: push(@array, $value);
4279: }
4280:
4281: $string =~ s/^__END_ARRAY_REF__//;
4282:
4283: return (\@array, $string);
4284: }
4285:
4286: # -------------------------------------------------------------------Temp Store
4287:
4288: sub tmpreset {
4289: my ($symb,$namespace,$domain,$stuname) = @_;
4290: if (!$symb) {
4291: $symb=&symbread();
4292: if (!$symb) { $symb= $env{'request.url'}; }
4293: }
4294: $symb=escape($symb);
4295:
4296: if (!$namespace) { $namespace=$env{'request.state'}; }
4297: $namespace=~s/\//\_/g;
4298: $namespace=~s/\W//g;
4299:
4300: if (!$domain) { $domain=$env{'user.domain'}; }
4301: if (!$stuname) { $stuname=$env{'user.name'}; }
4302: if ($domain eq 'public' && $stuname eq 'public') {
4303: $stuname=$ENV{'REMOTE_ADDR'};
4304: }
4305: my $path=LONCAPA::tempdir();
4306: my %hash;
4307: if (tie(%hash,'GDBM_File',
4308: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4309: &GDBM_WRCREAT(),0640)) {
4310: foreach my $key (keys(%hash)) {
4311: if ($key=~ /:$symb/) {
4312: delete($hash{$key});
4313: }
4314: }
4315: }
4316: }
4317:
4318: sub tmpstore {
4319: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4320:
4321: if (!$symb) {
4322: $symb=&symbread();
4323: if (!$symb) { $symb= $env{'request.url'}; }
4324: }
4325: $symb=escape($symb);
4326:
4327: if (!$namespace) {
4328: # I don't think we would ever want to store this for a course.
4329: # it seems this will only be used if we don't have a course.
4330: #$namespace=$env{'request.course.id'};
4331: #if (!$namespace) {
4332: $namespace=$env{'request.state'};
4333: #}
4334: }
4335: $namespace=~s/\//\_/g;
4336: $namespace=~s/\W//g;
4337: if (!$domain) { $domain=$env{'user.domain'}; }
4338: if (!$stuname) { $stuname=$env{'user.name'}; }
4339: if ($domain eq 'public' && $stuname eq 'public') {
4340: $stuname=$ENV{'REMOTE_ADDR'};
4341: }
4342: my $now=time;
4343: my %hash;
4344: my $path=LONCAPA::tempdir();
4345: if (tie(%hash,'GDBM_File',
4346: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4347: &GDBM_WRCREAT(),0640)) {
4348: $hash{"version:$symb"}++;
4349: my $version=$hash{"version:$symb"};
4350: my $allkeys='';
4351: foreach my $key (keys(%$storehash)) {
4352: $allkeys.=$key.':';
4353: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4354: }
4355: $hash{"$version:$symb:timestamp"}=$now;
4356: $allkeys.='timestamp';
4357: $hash{"$version:keys:$symb"}=$allkeys;
4358: if (untie(%hash)) {
4359: return 'ok';
4360: } else {
4361: return "error:$!";
4362: }
4363: } else {
4364: return "error:$!";
4365: }
4366: }
4367:
4368: # -----------------------------------------------------------------Temp Restore
4369:
4370: sub tmprestore {
4371: my ($symb,$namespace,$domain,$stuname) = @_;
4372:
4373: if (!$symb) {
4374: $symb=&symbread();
4375: if (!$symb) { $symb= $env{'request.url'}; }
4376: }
4377: $symb=escape($symb);
4378:
4379: if (!$namespace) { $namespace=$env{'request.state'}; }
4380:
4381: if (!$domain) { $domain=$env{'user.domain'}; }
4382: if (!$stuname) { $stuname=$env{'user.name'}; }
4383: if ($domain eq 'public' && $stuname eq 'public') {
4384: $stuname=$ENV{'REMOTE_ADDR'};
4385: }
4386: my %returnhash;
4387: $namespace=~s/\//\_/g;
4388: $namespace=~s/\W//g;
4389: my %hash;
4390: my $path=LONCAPA::tempdir();
4391: if (tie(%hash,'GDBM_File',
4392: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4393: &GDBM_READER(),0640)) {
4394: my $version=$hash{"version:$symb"};
4395: $returnhash{'version'}=$version;
4396: my $scope;
4397: for ($scope=1;$scope<=$version;$scope++) {
4398: my $vkeys=$hash{"$scope:keys:$symb"};
4399: my @keys=split(/:/,$vkeys);
4400: my $key;
4401: $returnhash{"$scope:keys"}=$vkeys;
4402: foreach $key (@keys) {
4403: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4404: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4405: }
4406: }
4407: if (!(untie(%hash))) {
4408: return "error:$!";
4409: }
4410: } else {
4411: return "error:$!";
4412: }
4413: return %returnhash;
4414: }
4415:
4416: # ----------------------------------------------------------------------- Store
4417:
4418: sub store {
4419: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4420: my $home='';
4421:
4422: if ($stuname) { $home=&homeserver($stuname,$domain); }
4423:
4424: $symb=&symbclean($symb);
4425: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4426:
4427: if (!$domain) { $domain=$env{'user.domain'}; }
4428: if (!$stuname) { $stuname=$env{'user.name'}; }
4429:
4430: &devalidate($symb,$stuname,$domain);
4431:
4432: $symb=escape($symb);
4433: if (!$namespace) {
4434: unless ($namespace=$env{'request.course.id'}) {
4435: return '';
4436: }
4437: }
4438: if (!$home) { $home=$env{'user.home'}; }
4439:
4440: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4441: $$storehash{'host'}=$perlvar{'lonHostID'};
4442:
4443: my $namevalue='';
4444: foreach my $key (keys(%$storehash)) {
4445: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4446: }
4447: $namevalue=~s/\&$//;
4448: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4449: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4450: }
4451:
4452: # -------------------------------------------------------------- Critical Store
4453:
4454: sub cstore {
4455: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4456: my $home='';
4457:
4458: if ($stuname) { $home=&homeserver($stuname,$domain); }
4459:
4460: $symb=&symbclean($symb);
4461: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4462:
4463: if (!$domain) { $domain=$env{'user.domain'}; }
4464: if (!$stuname) { $stuname=$env{'user.name'}; }
4465:
4466: &devalidate($symb,$stuname,$domain);
4467:
4468: $symb=escape($symb);
4469: if (!$namespace) {
4470: unless ($namespace=$env{'request.course.id'}) {
4471: return '';
4472: }
4473: }
4474: if (!$home) { $home=$env{'user.home'}; }
4475:
4476: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4477: $$storehash{'host'}=$perlvar{'lonHostID'};
4478:
4479: my $namevalue='';
4480: foreach my $key (keys(%$storehash)) {
4481: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4482: }
4483: $namevalue=~s/\&$//;
4484: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4485: return critical
4486: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4487: }
4488:
4489: # --------------------------------------------------------------------- Restore
4490:
4491: sub restore {
4492: my ($symb,$namespace,$domain,$stuname) = @_;
4493: my $home='';
4494:
4495: if ($stuname) { $home=&homeserver($stuname,$domain); }
4496:
4497: if (!$symb) {
4498: unless ($symb=escape(&symbread())) { return ''; }
4499: } else {
4500: $symb=&escape(&symbclean($symb));
4501: }
4502: if (!$namespace) {
4503: unless ($namespace=$env{'request.course.id'}) {
4504: return '';
4505: }
4506: }
4507: if (!$domain) { $domain=$env{'user.domain'}; }
4508: if (!$stuname) { $stuname=$env{'user.name'}; }
4509: if (!$home) { $home=$env{'user.home'}; }
4510: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4511:
4512: my %returnhash=();
4513: foreach my $line (split(/\&/,$answer)) {
4514: my ($name,$value)=split(/\=/,$line);
4515: $returnhash{&unescape($name)}=&thaw_unescape($value);
4516: }
4517: my $version;
4518: for ($version=1;$version<=$returnhash{'version'};$version++) {
4519: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4520: $returnhash{$item}=$returnhash{$version.':'.$item};
4521: }
4522: }
4523: return %returnhash;
4524: }
4525:
4526: # ---------------------------------------------------------- Course Description
4527: #
4528: #
4529:
4530: sub coursedescription {
4531: my ($courseid,$args)=@_;
4532: $courseid=~s/^\///;
4533: $courseid=~s/\_/\//g;
4534: my ($cdomain,$cnum)=split(/\//,$courseid);
4535: my $chome=&homeserver($cnum,$cdomain);
4536: my $normalid=$cdomain.'_'.$cnum;
4537: # need to always cache even if we get errors otherwise we keep
4538: # trying and trying and trying to get the course description.
4539: my %envhash=();
4540: my %returnhash=();
4541:
4542: my $expiretime=600;
4543: if ($env{'request.course.id'} eq $normalid) {
4544: $expiretime=120;
4545: }
4546:
4547: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4548: if (!$args->{'freshen_cache'}
4549: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4550: foreach my $key (keys(%env)) {
4551: next if ($key !~ /^\Q$prefix\E(.*)/);
4552: my ($setting) = $1;
4553: $returnhash{$setting} = $env{$key};
4554: }
4555: return %returnhash;
4556: }
4557:
4558: # get the data again
4559:
4560: if (!$args->{'one_time'}) {
4561: $envhash{'course.'.$normalid.'.last_cache'}=time;
4562: }
4563:
4564: if ($chome ne 'no_host') {
4565: %returnhash=&dump('environment',$cdomain,$cnum);
4566: if (!exists($returnhash{'con_lost'})) {
4567: my $username = $env{'user.name'}; # Defult username
4568: if(defined $args->{'user'}) {
4569: $username = $args->{'user'};
4570: }
4571: $returnhash{'home'}= $chome;
4572: $returnhash{'domain'} = $cdomain;
4573: $returnhash{'num'} = $cnum;
4574: if (!defined($returnhash{'type'})) {
4575: $returnhash{'type'} = 'Course';
4576: }
4577: while (my ($name,$value) = each %returnhash) {
4578: $envhash{'course.'.$normalid.'.'.$name}=$value;
4579: }
4580: $returnhash{'url'}=&clutter($returnhash{'url'});
4581: $returnhash{'fn'}=LONCAPA::tempdir() .
4582: $username.'_'.$cdomain.'_'.$cnum;
4583: $envhash{'course.'.$normalid.'.home'}=$chome;
4584: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4585: $envhash{'course.'.$normalid.'.num'}=$cnum;
4586: }
4587: }
4588: if (!$args->{'one_time'}) {
4589: &appenv(\%envhash);
4590: }
4591: return %returnhash;
4592: }
4593:
4594: sub update_released_required {
4595: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4596: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4597: $cid = $env{'request.course.id'};
4598: $cdom = $env{'course.'.$cid.'.domain'};
4599: $cnum = $env{'course.'.$cid.'.num'};
4600: $chome = $env{'course.'.$cid.'.home'};
4601: }
4602: if ($needsrelease) {
4603: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4604: my $needsupdate;
4605: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4606: $needsupdate = 1;
4607: } else {
4608: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4609: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4610: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4611: $needsupdate = 1;
4612: }
4613: }
4614: if ($needsupdate) {
4615: my %needshash = (
4616: 'internal.releaserequired' => $needsrelease,
4617: );
4618: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4619: if ($putresult eq 'ok') {
4620: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4621: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4622: if (ref($crsinfo{$cid}) eq 'HASH') {
4623: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4624: &courseidput($cdom,\%crsinfo,$chome,'notime');
4625: }
4626: }
4627: }
4628: }
4629: return;
4630: }
4631:
4632: # -------------------------------------------------See if a user is privileged
4633:
4634: sub privileged {
4635: my ($username,$domain)=@_;
4636:
4637: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4638: my $now = time;
4639:
4640: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4641: my ($trole, $tend, $tstart) = split(/_/, $role);
4642: if (($trole eq 'dc') || ($trole eq 'su')) {
4643: return 1 unless ($tend && $tend < $now)
4644: or ($tstart && $tstart > $now);
4645: }
4646: }
4647:
4648: return 0;
4649: }
4650:
4651: # -------------------------------------------------------- Get user privileges
4652:
4653: sub rolesinit {
4654: my ($domain, $username) = @_;
4655: my %userroles = ('user.login.time' => time);
4656: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4657:
4658: # firstaccess and timerinterval are related to timed maps/resources.
4659: # also, blocking can be triggered by an activating timer
4660: # it's saved in the user's %env.
4661: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4662: my %timerinterval = &dump('timerinterval', $domain, $username);
4663: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4664: %timerintchk, %timerintenv);
4665:
4666: foreach my $key (keys(%firstaccess)) {
4667: my ($cid, $rest) = split(/\0/, $key);
4668: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4669: }
4670:
4671: foreach my $key (keys(%timerinterval)) {
4672: my ($cid,$rest) = split(/\0/,$key);
4673: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4674: }
4675:
4676: my %allroles=();
4677: my %allgroups=();
4678:
4679: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4680: my $role = $rolesdump{$area};
4681: $area =~ s/\_\w\w$//;
4682:
4683: my ($trole, $tend, $tstart, $group_privs);
4684:
4685: if ($role =~ /^cr/) {
4686: # Custom role, defined by a user
4687: # e.g., user.role.cr/msu/smith/mynewrole
4688: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4689: $trole = $1;
4690: ($tend, $tstart) = split('_', $2);
4691: } else {
4692: $trole = $role;
4693: }
4694: } elsif ($role =~ m|^gr/|) {
4695: # Role of member in a group, defined within a course/community
4696: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
4697: ($trole, $tend, $tstart) = split(/_/, $role);
4698: next if $tstart eq '-1';
4699: ($trole, $group_privs) = split(/\//, $trole);
4700: $group_privs = &unescape($group_privs);
4701: } else {
4702: # Just a normal role, defined in roles.tab
4703: ($trole, $tend, $tstart) = split(/_/,$role);
4704: }
4705:
4706: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4707: $username);
4708: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4709:
4710: # role expired or not available yet?
4711: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
4712: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
4713:
4714: next if $area eq '' or $trole eq '';
4715:
4716: my $spec = "$trole.$area";
4717: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
4718:
4719: if ($trole =~ /^cr\//) {
4720: # Custom role, defined by a user
4721: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4722: } elsif ($trole eq 'gr') {
4723: # Role of a member in a group, defined within a course/community
4724: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4725: next;
4726: } else {
4727: # Normal role, defined in roles.tab
4728: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4729: }
4730:
4731: my $cid = $tdomain.'_'.$trest;
4732: unless ($firstaccchk{$cid}) {
4733: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4734: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4735: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4736: $coursetimerstarts{$cid}{$item};
4737: }
4738: }
4739: $firstaccchk{$cid} = 1;
4740: }
4741: unless ($timerintchk{$cid}) {
4742: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
4743: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
4744: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
4745: $coursetimerintervals{$cid}{$item};
4746: }
4747: }
4748: $timerintchk{$cid} = 1;
4749: }
4750: }
4751:
4752: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
4753: \%allroles, \%allgroups);
4754: $env{'user.adv'} = $userroles{'user.adv'};
4755:
4756: return (\%userroles,\%firstaccenv,\%timerintenv);
4757: }
4758:
4759: sub set_arearole {
4760: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4761: # log the associated role with the area
4762: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4763: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4764: }
4765:
4766: sub custom_roleprivs {
4767: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4768: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4769: my $homsvr=homeserver($rauthor,$rdomain);
4770: if (&hostname($homsvr) ne '') {
4771: my ($rdummy,$roledef)=
4772: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4773: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4774: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4775: if (defined($syspriv)) {
4776: if ($trest =~ /^$match_community$/) {
4777: $syspriv =~ s/bre\&S//;
4778: }
4779: $$allroles{'cm./'}.=':'.$syspriv;
4780: $$allroles{$spec.'./'}.=':'.$syspriv;
4781: }
4782: if ($tdomain ne '') {
4783: if (defined($dompriv)) {
4784: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4785: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4786: }
4787: if (($trest ne '') && (defined($coursepriv))) {
4788: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4789: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4790: }
4791: }
4792: }
4793: }
4794: }
4795:
4796: sub group_roleprivs {
4797: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4798: my $access = 1;
4799: my $now = time;
4800: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4801: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4802: if ($access) {
4803: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4804: $$allgroups{$course}{$group} .=':'.$group_privs;
4805: }
4806: }
4807:
4808: sub standard_roleprivs {
4809: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4810: if (defined($pr{$trole.':s'})) {
4811: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4812: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4813: }
4814: if ($tdomain ne '') {
4815: if (defined($pr{$trole.':d'})) {
4816: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4817: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4818: }
4819: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4820: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4821: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4822: }
4823: }
4824: }
4825:
4826: sub set_userprivs {
4827: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4828: my $author=0;
4829: my $adv=0;
4830: my %grouproles = ();
4831: if (keys(%{$allgroups}) > 0) {
4832: my @groupkeys;
4833: foreach my $role (keys(%{$allroles})) {
4834: push(@groupkeys,$role);
4835: }
4836: if (ref($groups_roles) eq 'HASH') {
4837: foreach my $key (keys(%{$groups_roles})) {
4838: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4839: push(@groupkeys,$key);
4840: }
4841: }
4842: }
4843: if (@groupkeys > 0) {
4844: foreach my $role (@groupkeys) {
4845: my ($trole,$area,$sec,$extendedarea);
4846: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4847: $trole = $1;
4848: $area = $2;
4849: $sec = $3;
4850: $extendedarea = $area.$sec;
4851: if (exists($$allgroups{$area})) {
4852: foreach my $group (keys(%{$$allgroups{$area}})) {
4853: my $spec = $trole.'.'.$extendedarea;
4854: $grouproles{$spec.'.'.$area.'/'.$group} =
4855: $$allgroups{$area}{$group};
4856: }
4857: }
4858: }
4859: }
4860: }
4861: }
4862: foreach my $group (keys(%grouproles)) {
4863: $$allroles{$group} = $grouproles{$group};
4864: }
4865: foreach my $role (keys(%{$allroles})) {
4866: my %thesepriv;
4867: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4868: foreach my $item (split(/:/,$$allroles{$role})) {
4869: if ($item ne '') {
4870: my ($privilege,$restrictions)=split(/&/,$item);
4871: if ($restrictions eq '') {
4872: $thesepriv{$privilege}='F';
4873: } elsif ($thesepriv{$privilege} ne 'F') {
4874: $thesepriv{$privilege}.=$restrictions;
4875: }
4876: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4877: }
4878: }
4879: my $thesestr='';
4880: foreach my $priv (sort(keys(%thesepriv))) {
4881: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4882: }
4883: $userroles->{'user.priv.'.$role} = $thesestr;
4884: }
4885: return ($author,$adv);
4886: }
4887:
4888: sub role_status {
4889: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4890: my @pwhere = ();
4891: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4892: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4893: unless (!defined($$role) || $$role eq '') {
4894: $$where=join('.',@pwhere);
4895: $$trolecode=$$role.'.'.$$where;
4896: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4897: $$tstatus='is';
4898: if ($$tstart && $$tstart>$update) {
4899: $$tstatus='future';
4900: if ($$tstart<$now) {
4901: if ($$tstart && $$tstart>$refresh) {
4902: if (($$where ne '') && ($$role ne '')) {
4903: my (%allroles,%allgroups,$group_privs,
4904: %groups_roles,@rolecodes);
4905: my %userroles = (
4906: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4907: );
4908: @rolecodes = ('cm');
4909: my $spec=$$role.'.'.$$where;
4910: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4911: if ($$role =~ /^cr\//) {
4912: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4913: push(@rolecodes,'cr');
4914: } elsif ($$role eq 'gr') {
4915: push(@rolecodes,$$role);
4916: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4917: $env{'user.name'});
4918: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4919: (undef,my $group_privs) = split(/\//,$trole);
4920: $group_privs = &unescape($group_privs);
4921: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4922: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4923: &get_groups_roles($tdomain,$trest,
4924: \%course_roles,\@rolecodes,
4925: \%groups_roles);
4926: } else {
4927: push(@rolecodes,$$role);
4928: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4929: }
4930: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4931: &appenv(\%userroles,\@rolecodes);
4932: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4933: }
4934: }
4935: $$tstatus = 'is';
4936: }
4937: }
4938: if ($$tend) {
4939: if ($$tend<$update) {
4940: $$tstatus='expired';
4941: } elsif ($$tend<$now) {
4942: $$tstatus='will_not';
4943: }
4944: }
4945: }
4946: }
4947: }
4948:
4949: sub get_groups_roles {
4950: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4951: return unless((ref($cdom_courseroles) eq 'HASH') &&
4952: (ref($rolecodes) eq 'ARRAY') &&
4953: (ref($groups_roles) eq 'HASH'));
4954: if (keys(%{$cdom_courseroles}) > 0) {
4955: my ($cnum) = ($rest =~ /^($match_courseid)/);
4956: if ($cdom ne '' && $cnum ne '') {
4957: foreach my $key (keys(%{$cdom_courseroles})) {
4958: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4959: my $crsrole = $1;
4960: my $crssec = $2;
4961: if ($crsrole =~ /^cr/) {
4962: unless (grep(/^cr$/,@{$rolecodes})) {
4963: push(@{$rolecodes},'cr');
4964: }
4965: } else {
4966: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4967: push(@{$rolecodes},$crsrole);
4968: }
4969: }
4970: my $rolekey = "$crsrole./$cdom/$cnum";
4971: if ($crssec ne '') {
4972: $rolekey .= "/$crssec";
4973: }
4974: $rolekey .= './';
4975: $groups_roles->{$rolekey} = $rolecodes;
4976: }
4977: }
4978: }
4979: }
4980: return;
4981: }
4982:
4983: sub delete_env_groupprivs {
4984: my ($where,$courseroles,$possroles) = @_;
4985: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4986: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4987: unless (ref($courseroles->{$udom}) eq 'HASH') {
4988: %{$courseroles->{$udom}} =
4989: &get_my_roles('','','userroles',['active'],
4990: $possroles,[$udom],1);
4991: }
4992: if (ref($courseroles->{$udom}) eq 'HASH') {
4993: foreach my $item (keys(%{$courseroles->{$udom}})) {
4994: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4995: my $area = '/'.$cdom.'/'.$cnum;
4996: my $privkey = "user.priv.$crsrole.$area";
4997: if ($crssec ne '') {
4998: $privkey .= '/'.$crssec;
4999: }
5000: $privkey .= ".$area/$group";
5001: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5002: }
5003: }
5004: return;
5005: }
5006:
5007: sub check_adhoc_privs {
5008: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5009: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5010: if ($env{$cckey}) {
5011: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5012: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5013: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5014: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5015: }
5016: } else {
5017: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5018: }
5019: }
5020:
5021: sub set_adhoc_privileges {
5022: # role can be cc or ca
5023: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5024: my $area = '/'.$dcdom.'/'.$pickedcourse;
5025: my $spec = $role.'.'.$area;
5026: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5027: $env{'user.name'});
5028: my %ccrole = ();
5029: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5030: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5031: &appenv(\%userroles,[$role,'cm']);
5032: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5033: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5034: &appenv( {'request.role' => $spec,
5035: 'request.role.domain' => $dcdom,
5036: 'request.course.sec' => ''
5037: }
5038: );
5039: my $tadv=0;
5040: if (&allowed('adv') eq 'F') { $tadv=1; }
5041: &appenv({'request.role.adv' => $tadv});
5042: }
5043: }
5044:
5045: # --------------------------------------------------------------- get interface
5046:
5047: sub get {
5048: my ($namespace,$storearr,$udomain,$uname)=@_;
5049: my $items='';
5050: foreach my $item (@$storearr) {
5051: $items.=&escape($item).'&';
5052: }
5053: $items=~s/\&$//;
5054: if (!$udomain) { $udomain=$env{'user.domain'}; }
5055: if (!$uname) { $uname=$env{'user.name'}; }
5056: my $uhome=&homeserver($uname,$udomain);
5057:
5058: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5059: my @pairs=split(/\&/,$rep);
5060: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5061: return @pairs;
5062: }
5063: my %returnhash=();
5064: my $i=0;
5065: foreach my $item (@$storearr) {
5066: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5067: $i++;
5068: }
5069: return %returnhash;
5070: }
5071:
5072: # --------------------------------------------------------------- del interface
5073:
5074: sub del {
5075: my ($namespace,$storearr,$udomain,$uname)=@_;
5076: my $items='';
5077: foreach my $item (@$storearr) {
5078: $items.=&escape($item).'&';
5079: }
5080:
5081: $items=~s/\&$//;
5082: if (!$udomain) { $udomain=$env{'user.domain'}; }
5083: if (!$uname) { $uname=$env{'user.name'}; }
5084: my $uhome=&homeserver($uname,$udomain);
5085: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5086: }
5087:
5088: # -------------------------------------------------------------- dump interface
5089:
5090: sub unserialize {
5091: my ($rep, $escapedkeys) = @_;
5092:
5093: return {} if $rep =~ /^error/;
5094:
5095: my %returnhash=();
5096: foreach my $item (split /\&/, $rep) {
5097: my ($key, $value) = split(/=/, $item, 2);
5098: $key = unescape($key) unless $escapedkeys;
5099: next if $key =~ /^error: 2 /;
5100: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5101: }
5102: #return %returnhash;
5103: return \%returnhash;
5104: }
5105:
5106: # see Lond::dump_with_regexp
5107: # if $escapedkeys hash keys won't get unescaped.
5108: sub dump {
5109: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5110: if (!$udomain) { $udomain=$env{'user.domain'}; }
5111: if (!$uname) { $uname=$env{'user.name'}; }
5112: my $uhome=&homeserver($uname,$udomain);
5113:
5114: my $reply;
5115: if (grep { $_ eq $uhome } current_machine_ids()) {
5116: # user is hosted on this machine
5117: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5118: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5119: return %{unserialize($reply, $escapedkeys)};
5120: }
5121: if ($regexp) {
5122: $regexp=&escape($regexp);
5123: } else {
5124: $regexp='.';
5125: }
5126: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5127: my @pairs=split(/\&/,$rep);
5128: my %returnhash=();
5129: if (!($rep =~ /^error/ )) {
5130: foreach my $item (@pairs) {
5131: my ($key,$value)=split(/=/,$item,2);
5132: $key = unescape($key) unless $escapedkeys;
5133: #$key = &unescape($key);
5134: next if ($key =~ /^error: 2 /);
5135: $returnhash{$key}=&thaw_unescape($value);
5136: }
5137: }
5138: return %returnhash;
5139: }
5140:
5141:
5142: # --------------------------------------------------------- dumpstore interface
5143:
5144: sub dumpstore {
5145: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5146: # same as dump but keys must be escaped. They may contain colon separated
5147: # lists of values that may themself contain colons (e.g. symbs).
5148: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5149: }
5150:
5151: # -------------------------------------------------------------- keys interface
5152:
5153: sub getkeys {
5154: my ($namespace,$udomain,$uname)=@_;
5155: if (!$udomain) { $udomain=$env{'user.domain'}; }
5156: if (!$uname) { $uname=$env{'user.name'}; }
5157: my $uhome=&homeserver($uname,$udomain);
5158: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5159: my @keyarray=();
5160: foreach my $key (split(/\&/,$rep)) {
5161: next if ($key =~ /^error: 2 /);
5162: push(@keyarray,&unescape($key));
5163: }
5164: return @keyarray;
5165: }
5166:
5167: # --------------------------------------------------------------- currentdump
5168: sub currentdump {
5169: my ($courseid,$sdom,$sname)=@_;
5170: $courseid = $env{'request.course.id'} if (! defined($courseid));
5171: $sdom = $env{'user.domain'} if (! defined($sdom));
5172: $sname = $env{'user.name'} if (! defined($sname));
5173: my $uhome = &homeserver($sname,$sdom);
5174: my $rep;
5175:
5176: if (grep { $_ eq $uhome } current_machine_ids()) {
5177: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5178: $courseid)));
5179: } else {
5180: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5181: }
5182:
5183: return if ($rep =~ /^(error:|no_such_host)/);
5184: #
5185: my %returnhash=();
5186: #
5187: if ($rep eq "unknown_cmd") {
5188: # an old lond will not know currentdump
5189: # Do a dump and make it look like a currentdump
5190: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5191: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5192: my %hash = @tmp;
5193: @tmp=();
5194: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5195: } else {
5196: my @pairs=split(/\&/,$rep);
5197: foreach my $pair (@pairs) {
5198: my ($key,$value)=split(/=/,$pair,2);
5199: my ($symb,$param) = split(/:/,$key);
5200: $returnhash{&unescape($symb)}->{&unescape($param)} =
5201: &thaw_unescape($value);
5202: }
5203: }
5204: return %returnhash;
5205: }
5206:
5207: sub convert_dump_to_currentdump{
5208: my %hash = %{shift()};
5209: my %returnhash;
5210: # Code ripped from lond, essentially. The only difference
5211: # here is the unescaping done by lonnet::dump(). Conceivably
5212: # we might run in to problems with parameter names =~ /^v\./
5213: while (my ($key,$value) = each(%hash)) {
5214: my ($v,$symb,$param) = split(/:/,$key);
5215: $symb = &unescape($symb);
5216: $param = &unescape($param);
5217: next if ($v eq 'version' || $symb eq 'keys');
5218: next if (exists($returnhash{$symb}) &&
5219: exists($returnhash{$symb}->{$param}) &&
5220: $returnhash{$symb}->{'v.'.$param} > $v);
5221: $returnhash{$symb}->{$param}=$value;
5222: $returnhash{$symb}->{'v.'.$param}=$v;
5223: }
5224: #
5225: # Remove all of the keys in the hashes which keep track of
5226: # the version of the parameter.
5227: while (my ($symb,$param_hash) = each(%returnhash)) {
5228: # use a foreach because we are going to delete from the hash.
5229: foreach my $key (keys(%$param_hash)) {
5230: delete($param_hash->{$key}) if ($key =~ /^v\./);
5231: }
5232: }
5233: return \%returnhash;
5234: }
5235:
5236: # ------------------------------------------------------ critical inc interface
5237:
5238: sub cinc {
5239: return &inc(@_,'critical');
5240: }
5241:
5242: # --------------------------------------------------------------- inc interface
5243:
5244: sub inc {
5245: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5246: if (!$udomain) { $udomain=$env{'user.domain'}; }
5247: if (!$uname) { $uname=$env{'user.name'}; }
5248: my $uhome=&homeserver($uname,$udomain);
5249: my $items='';
5250: if (! ref($store)) {
5251: # got a single value, so use that instead
5252: $items = &escape($store).'=&';
5253: } elsif (ref($store) eq 'SCALAR') {
5254: $items = &escape($$store).'=&';
5255: } elsif (ref($store) eq 'ARRAY') {
5256: $items = join('=&',map {&escape($_);} @{$store});
5257: } elsif (ref($store) eq 'HASH') {
5258: while (my($key,$value) = each(%{$store})) {
5259: $items.= &escape($key).'='.&escape($value).'&';
5260: }
5261: }
5262: $items=~s/\&$//;
5263: if ($critical) {
5264: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5265: } else {
5266: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5267: }
5268: }
5269:
5270: # --------------------------------------------------------------- put interface
5271:
5272: sub put {
5273: my ($namespace,$storehash,$udomain,$uname)=@_;
5274: if (!$udomain) { $udomain=$env{'user.domain'}; }
5275: if (!$uname) { $uname=$env{'user.name'}; }
5276: my $uhome=&homeserver($uname,$udomain);
5277: my $items='';
5278: foreach my $item (keys(%$storehash)) {
5279: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5280: }
5281: $items=~s/\&$//;
5282: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5283: }
5284:
5285: # ------------------------------------------------------------ newput interface
5286:
5287: sub newput {
5288: my ($namespace,$storehash,$udomain,$uname)=@_;
5289: if (!$udomain) { $udomain=$env{'user.domain'}; }
5290: if (!$uname) { $uname=$env{'user.name'}; }
5291: my $uhome=&homeserver($uname,$udomain);
5292: my $items='';
5293: foreach my $key (keys(%$storehash)) {
5294: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5295: }
5296: $items=~s/\&$//;
5297: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5298: }
5299:
5300: # --------------------------------------------------------- putstore interface
5301:
5302: sub putstore {
5303: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5304: if (!$udomain) { $udomain=$env{'user.domain'}; }
5305: if (!$uname) { $uname=$env{'user.name'}; }
5306: my $uhome=&homeserver($uname,$udomain);
5307: my $items='';
5308: foreach my $key (keys(%$storehash)) {
5309: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5310: }
5311: $items=~s/\&$//;
5312: my $esc_symb=&escape($symb);
5313: my $esc_v=&escape($version);
5314: my $reply =
5315: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5316: $uhome);
5317: if ($reply eq 'unknown_cmd') {
5318: # gfall back to way things use to be done
5319: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5320: $uname);
5321: }
5322: return $reply;
5323: }
5324:
5325: sub old_putstore {
5326: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5327: if (!$udomain) { $udomain=$env{'user.domain'}; }
5328: if (!$uname) { $uname=$env{'user.name'}; }
5329: my $uhome=&homeserver($uname,$udomain);
5330: my %newstorehash;
5331: foreach my $item (keys(%$storehash)) {
5332: my $key = $version.':'.&escape($symb).':'.$item;
5333: $newstorehash{$key} = $storehash->{$item};
5334: }
5335: my $items='';
5336: my %allitems = ();
5337: foreach my $item (keys(%newstorehash)) {
5338: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5339: my $key = $1.':keys:'.$2;
5340: $allitems{$key} .= $3.':';
5341: }
5342: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5343: }
5344: foreach my $item (keys(%allitems)) {
5345: $allitems{$item} =~ s/\:$//;
5346: $items.= $item.'='.$allitems{$item}.'&';
5347: }
5348: $items=~s/\&$//;
5349: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5350: }
5351:
5352: # ------------------------------------------------------ critical put interface
5353:
5354: sub cput {
5355: my ($namespace,$storehash,$udomain,$uname)=@_;
5356: if (!$udomain) { $udomain=$env{'user.domain'}; }
5357: if (!$uname) { $uname=$env{'user.name'}; }
5358: my $uhome=&homeserver($uname,$udomain);
5359: my $items='';
5360: foreach my $item (keys(%$storehash)) {
5361: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5362: }
5363: $items=~s/\&$//;
5364: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5365: }
5366:
5367: # -------------------------------------------------------------- eget interface
5368:
5369: sub eget {
5370: my ($namespace,$storearr,$udomain,$uname)=@_;
5371: my $items='';
5372: foreach my $item (@$storearr) {
5373: $items.=&escape($item).'&';
5374: }
5375: $items=~s/\&$//;
5376: if (!$udomain) { $udomain=$env{'user.domain'}; }
5377: if (!$uname) { $uname=$env{'user.name'}; }
5378: my $uhome=&homeserver($uname,$udomain);
5379: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5380: my @pairs=split(/\&/,$rep);
5381: my %returnhash=();
5382: my $i=0;
5383: foreach my $item (@$storearr) {
5384: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5385: $i++;
5386: }
5387: return %returnhash;
5388: }
5389:
5390: # ------------------------------------------------------------ tmpput interface
5391: sub tmpput {
5392: my ($storehash,$server,$context)=@_;
5393: my $items='';
5394: foreach my $item (keys(%$storehash)) {
5395: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5396: }
5397: $items=~s/\&$//;
5398: if (defined($context)) {
5399: $items .= ':'.&escape($context);
5400: }
5401: return &reply("tmpput:$items",$server);
5402: }
5403:
5404: # ------------------------------------------------------------ tmpget interface
5405: sub tmpget {
5406: my ($token,$server)=@_;
5407: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5408: my $rep=&reply("tmpget:$token",$server);
5409: my %returnhash;
5410: foreach my $item (split(/\&/,$rep)) {
5411: my ($key,$value)=split(/=/,$item);
5412: next if ($key =~ /^error: 2 /);
5413: $returnhash{&unescape($key)}=&thaw_unescape($value);
5414: }
5415: return %returnhash;
5416: }
5417:
5418: # ------------------------------------------------------------ tmpdel interface
5419: sub tmpdel {
5420: my ($token,$server)=@_;
5421: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5422: return &reply("tmpdel:$token",$server);
5423: }
5424:
5425: # -------------------------------------------------- portfolio access checking
5426:
5427: sub portfolio_access {
5428: my ($requrl) = @_;
5429: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5430: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5431: if ($result) {
5432: my %setters;
5433: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5434: my ($startblock,$endblock) =
5435: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5436: if ($startblock && $endblock) {
5437: return 'B';
5438: }
5439: } else {
5440: my ($startblock,$endblock) =
5441: &Apache::loncommon::blockcheck(\%setters,'port');
5442: if ($startblock && $endblock) {
5443: return 'B';
5444: }
5445: }
5446: }
5447: if ($result eq 'ok') {
5448: return 'F';
5449: } elsif ($result =~ /^[^:]+:guest_/) {
5450: return 'A';
5451: }
5452: return '';
5453: }
5454:
5455: sub get_portfolio_access {
5456: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5457:
5458: if (!ref($access_hash)) {
5459: my $current_perms = &get_portfile_permissions($udom,$unum);
5460: my %access_controls = &get_access_controls($current_perms,$group,
5461: $file_name);
5462: $access_hash = $access_controls{$file_name};
5463: }
5464:
5465: my ($public,$guest,@domains,@users,@courses,@groups);
5466: my $now = time;
5467: if (ref($access_hash) eq 'HASH') {
5468: foreach my $key (keys(%{$access_hash})) {
5469: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5470: if ($start > $now) {
5471: next;
5472: }
5473: if ($end && $end<$now) {
5474: next;
5475: }
5476: if ($scope eq 'public') {
5477: $public = $key;
5478: last;
5479: } elsif ($scope eq 'guest') {
5480: $guest = $key;
5481: } elsif ($scope eq 'domains') {
5482: push(@domains,$key);
5483: } elsif ($scope eq 'users') {
5484: push(@users,$key);
5485: } elsif ($scope eq 'course') {
5486: push(@courses,$key);
5487: } elsif ($scope eq 'group') {
5488: push(@groups,$key);
5489: }
5490: }
5491: if ($public) {
5492: return 'ok';
5493: }
5494: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5495: if ($guest) {
5496: return $guest;
5497: }
5498: } else {
5499: if (@domains > 0) {
5500: foreach my $domkey (@domains) {
5501: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5502: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5503: return 'ok';
5504: }
5505: }
5506: }
5507: }
5508: if (@users > 0) {
5509: foreach my $userkey (@users) {
5510: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5511: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5512: if (ref($item) eq 'HASH') {
5513: if (($item->{'uname'} eq $env{'user.name'}) &&
5514: ($item->{'udom'} eq $env{'user.domain'})) {
5515: return 'ok';
5516: }
5517: }
5518: }
5519: }
5520: }
5521: }
5522: my %roleshash;
5523: my @courses_and_groups = @courses;
5524: push(@courses_and_groups,@groups);
5525: if (@courses_and_groups > 0) {
5526: my (%allgroups,%allroles);
5527: my ($start,$end,$role,$sec,$group);
5528: foreach my $envkey (%env) {
5529: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5530: my $cid = $2.'_'.$3;
5531: if ($1 eq 'gr') {
5532: $group = $4;
5533: $allgroups{$cid}{$group} = $env{$envkey};
5534: } else {
5535: if ($4 eq '') {
5536: $sec = 'none';
5537: } else {
5538: $sec = $4;
5539: }
5540: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5541: }
5542: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5543: my $cid = $2.'_'.$3;
5544: if ($4 eq '') {
5545: $sec = 'none';
5546: } else {
5547: $sec = $4;
5548: }
5549: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5550: }
5551: }
5552: if (keys(%allroles) == 0) {
5553: return;
5554: }
5555: foreach my $key (@courses_and_groups) {
5556: my %content = %{$$access_hash{$key}};
5557: my $cnum = $content{'number'};
5558: my $cdom = $content{'domain'};
5559: my $cid = $cdom.'_'.$cnum;
5560: if (!exists($allroles{$cid})) {
5561: next;
5562: }
5563: foreach my $role_id (keys(%{$content{'roles'}})) {
5564: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5565: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5566: my @status = @{$content{'roles'}{$role_id}{'access'}};
5567: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5568: foreach my $role (keys(%{$allroles{$cid}})) {
5569: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5570: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5571: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5572: if (grep/^all$/,@sections) {
5573: return 'ok';
5574: } else {
5575: if (grep/^$sec$/,@sections) {
5576: return 'ok';
5577: }
5578: }
5579: }
5580: }
5581: if (keys(%{$allgroups{$cid}}) == 0) {
5582: if (grep/^none$/,@groups) {
5583: return 'ok';
5584: }
5585: } else {
5586: if (grep/^all$/,@groups) {
5587: return 'ok';
5588: }
5589: foreach my $group (keys(%{$allgroups{$cid}})) {
5590: if (grep/^$group$/,@groups) {
5591: return 'ok';
5592: }
5593: }
5594: }
5595: }
5596: }
5597: }
5598: }
5599: }
5600: if ($guest) {
5601: return $guest;
5602: }
5603: }
5604: }
5605: return;
5606: }
5607:
5608: sub course_group_datechecker {
5609: my ($dates,$now,$status) = @_;
5610: my ($start,$end) = split(/\./,$dates);
5611: if (!$start && !$end) {
5612: return 'ok';
5613: }
5614: if (grep/^active$/,@{$status}) {
5615: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5616: return 'ok';
5617: }
5618: }
5619: if (grep/^previous$/,@{$status}) {
5620: if ($end > $now ) {
5621: return 'ok';
5622: }
5623: }
5624: if (grep/^future$/,@{$status}) {
5625: if ($start > $now) {
5626: return 'ok';
5627: }
5628: }
5629: return;
5630: }
5631:
5632: sub parse_portfolio_url {
5633: my ($url) = @_;
5634:
5635: my ($type,$udom,$unum,$group,$file_name);
5636:
5637: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5638: $type = 1;
5639: $udom = $1;
5640: $unum = $2;
5641: $file_name = $3;
5642: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5643: $type = 2;
5644: $udom = $1;
5645: $unum = $2;
5646: $group = $3;
5647: $file_name = $3.'/'.$4;
5648: }
5649: if (wantarray) {
5650: return ($type,$udom,$unum,$file_name,$group);
5651: }
5652: return $type;
5653: }
5654:
5655: sub is_portfolio_url {
5656: my ($url) = @_;
5657: return scalar(&parse_portfolio_url($url));
5658: }
5659:
5660: sub is_portfolio_file {
5661: my ($file) = @_;
5662: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5663: return 1;
5664: }
5665: return;
5666: }
5667:
5668: sub usertools_access {
5669: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5670: my ($access,%tools);
5671: if ($context eq '') {
5672: $context = 'tools';
5673: }
5674: if ($context eq 'requestcourses') {
5675: %tools = (
5676: official => 1,
5677: unofficial => 1,
5678: community => 1,
5679: );
5680: } else {
5681: %tools = (
5682: aboutme => 1,
5683: blog => 1,
5684: webdav => 1,
5685: portfolio => 1,
5686: );
5687: }
5688: return if (!defined($tools{$tool}));
5689:
5690: if ((!defined($udom)) || (!defined($uname))) {
5691: $udom = $env{'user.domain'};
5692: $uname = $env{'user.name'};
5693: }
5694:
5695: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5696: if ($action ne 'reload') {
5697: if ($context eq 'requestcourses') {
5698: return $env{'environment.canrequest.'.$tool};
5699: } else {
5700: return $env{'environment.availabletools.'.$tool};
5701: }
5702: }
5703: }
5704:
5705: my ($toolstatus,$inststatus);
5706:
5707: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5708: ($action ne 'reload')) {
5709: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5710: $inststatus = $env{'environment.inststatus'};
5711: } else {
5712: if (ref($userenvref) eq 'HASH') {
5713: $toolstatus = $userenvref->{$context.'.'.$tool};
5714: $inststatus = $userenvref->{'inststatus'};
5715: } else {
5716: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5717: $toolstatus = $userenv{$context.'.'.$tool};
5718: $inststatus = $userenv{'inststatus'};
5719: }
5720: }
5721:
5722: if ($toolstatus ne '') {
5723: if ($toolstatus) {
5724: $access = 1;
5725: } else {
5726: $access = 0;
5727: }
5728: return $access;
5729: }
5730:
5731: my ($is_adv,%domdef);
5732: if (ref($is_advref) eq 'HASH') {
5733: $is_adv = $is_advref->{'is_adv'};
5734: } else {
5735: $is_adv = &is_advanced_user($udom,$uname);
5736: }
5737: if (ref($domdefref) eq 'HASH') {
5738: %domdef = %{$domdefref};
5739: } else {
5740: %domdef = &get_domain_defaults($udom);
5741: }
5742: if (ref($domdef{$tool}) eq 'HASH') {
5743: if ($is_adv) {
5744: if ($domdef{$tool}{'_LC_adv'} ne '') {
5745: if ($domdef{$tool}{'_LC_adv'}) {
5746: $access = 1;
5747: } else {
5748: $access = 0;
5749: }
5750: return $access;
5751: }
5752: }
5753: if ($inststatus ne '') {
5754: my ($hasaccess,$hasnoaccess);
5755: foreach my $affiliation (split(/:/,$inststatus)) {
5756: if ($domdef{$tool}{$affiliation} ne '') {
5757: if ($domdef{$tool}{$affiliation}) {
5758: $hasaccess = 1;
5759: } else {
5760: $hasnoaccess = 1;
5761: }
5762: }
5763: }
5764: if ($hasaccess || $hasnoaccess) {
5765: if ($hasaccess) {
5766: $access = 1;
5767: } elsif ($hasnoaccess) {
5768: $access = 0;
5769: }
5770: return $access;
5771: }
5772: } else {
5773: if ($domdef{$tool}{'default'} ne '') {
5774: if ($domdef{$tool}{'default'}) {
5775: $access = 1;
5776: } elsif ($domdef{$tool}{'default'} == 0) {
5777: $access = 0;
5778: }
5779: return $access;
5780: }
5781: }
5782: } else {
5783: if (($context eq 'tools') && ($tool ne 'webdav')) {
5784: $access = 1;
5785: } else {
5786: $access = 0;
5787: }
5788: return $access;
5789: }
5790: }
5791:
5792: sub is_course_owner {
5793: my ($cdom,$cnum,$udom,$uname) = @_;
5794: if (($udom eq '') || ($uname eq '')) {
5795: $udom = $env{'user.domain'};
5796: $uname = $env{'user.name'};
5797: }
5798: unless (($udom eq '') || ($uname eq '')) {
5799: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5800: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5801: return 1;
5802: } else {
5803: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5804: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5805: return 1;
5806: }
5807: }
5808: }
5809: }
5810: return;
5811: }
5812:
5813: sub is_advanced_user {
5814: my ($udom,$uname) = @_;
5815: if ($udom ne '' && $uname ne '') {
5816: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5817: if (wantarray) {
5818: return ($env{'user.adv'},$env{'user.author'});
5819: } else {
5820: return $env{'user.adv'};
5821: }
5822: }
5823: }
5824: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5825: my %allroles;
5826: my ($is_adv,$is_author);
5827: foreach my $role (keys(%roleshash)) {
5828: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5829: my $area = '/'.$tdomain.'/'.$trest;
5830: if ($sec ne '') {
5831: $area .= '/'.$sec;
5832: }
5833: if (($area ne '') && ($trole ne '')) {
5834: my $spec=$trole.'.'.$area;
5835: if ($trole =~ /^cr\//) {
5836: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5837: } elsif ($trole ne 'gr') {
5838: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5839: }
5840: if ($trole eq 'au') {
5841: $is_author = 1;
5842: }
5843: }
5844: }
5845: foreach my $role (keys(%allroles)) {
5846: last if ($is_adv);
5847: foreach my $item (split(/:/,$allroles{$role})) {
5848: if ($item ne '') {
5849: my ($privilege,$restrictions)=split(/&/,$item);
5850: if ($privilege eq 'adv') {
5851: $is_adv = 1;
5852: last;
5853: }
5854: }
5855: }
5856: }
5857: if (wantarray) {
5858: return ($is_adv,$is_author);
5859: }
5860: return $is_adv;
5861: }
5862:
5863: sub check_can_request {
5864: my ($dom,$can_request,$request_domains) = @_;
5865: my $canreq = 0;
5866: my ($types,$typename) = &Apache::loncommon::course_types();
5867: my @options = ('approval','validate','autolimit');
5868: my $optregex = join('|',@options);
5869: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5870: foreach my $type (@{$types}) {
5871: if (&usertools_access($env{'user.name'},
5872: $env{'user.domain'},
5873: $type,undef,'requestcourses')) {
5874: $canreq ++;
5875: if (ref($request_domains) eq 'HASH') {
5876: push(@{$request_domains->{$type}},$env{'user.domain'});
5877: }
5878: if ($dom eq $env{'user.domain'}) {
5879: $can_request->{$type} = 1;
5880: }
5881: }
5882: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5883: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5884: if (@curr > 0) {
5885: foreach my $item (@curr) {
5886: if (ref($request_domains) eq 'HASH') {
5887: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5888: if ($otherdom ne '') {
5889: if (ref($request_domains->{$type}) eq 'ARRAY') {
5890: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5891: push(@{$request_domains->{$type}},$otherdom);
5892: }
5893: } else {
5894: push(@{$request_domains->{$type}},$otherdom);
5895: }
5896: }
5897: }
5898: }
5899: unless($dom eq $env{'user.domain'}) {
5900: $canreq ++;
5901: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5902: $can_request->{$type} = 1;
5903: }
5904: }
5905: }
5906: }
5907: }
5908: }
5909: return $canreq;
5910: }
5911:
5912: # ---------------------------------------------- Custom access rule evaluation
5913:
5914: sub customaccess {
5915: my ($priv,$uri)=@_;
5916: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5917: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5918: $udom = &LONCAPA::clean_domain($udom);
5919: $ucrs = &LONCAPA::clean_username($ucrs);
5920: my $access=0;
5921: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5922: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5923: if ($type eq 'user') {
5924: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5925: my ($tdom,$tuname)=split(m{/},$scope);
5926: if ($tdom) {
5927: if ($tdom ne $env{'user.domain'}) { next; }
5928: }
5929: if ($tuname) {
5930: if ($tuname ne $env{'user.name'}) { next; }
5931: }
5932: $access=($effect eq 'allow');
5933: last;
5934: }
5935: } else {
5936: if ($role) {
5937: if ($role ne $urole) { next; }
5938: }
5939: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5940: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5941: if ($tdom) {
5942: if ($tdom ne $udom) { next; }
5943: }
5944: if ($tcrs) {
5945: if ($tcrs ne $ucrs) { next; }
5946: }
5947: if ($tsec) {
5948: if ($tsec ne $usec) { next; }
5949: }
5950: $access=($effect eq 'allow');
5951: last;
5952: }
5953: if ($realm eq '' && $role eq '') {
5954: $access=($effect eq 'allow');
5955: }
5956: }
5957: }
5958: return $access;
5959: }
5960:
5961: # ------------------------------------------------- Check for a user privilege
5962:
5963: sub allowed {
5964: my ($priv,$uri,$symb,$role)=@_;
5965: my $ver_orguri=$uri;
5966: $uri=&deversion($uri);
5967: my $orguri=$uri;
5968: $uri=&declutter($uri);
5969:
5970: if ($priv eq 'evb') {
5971: # Evade communication block restrictions for specified role in a course
5972: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5973: return $1;
5974: } else {
5975: return;
5976: }
5977: }
5978:
5979: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5980: # Free bre access to adm and meta resources
5981: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5982: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5983: && ($priv eq 'bre')) {
5984: return 'F';
5985: }
5986:
5987: # Free bre access to user's own portfolio contents
5988: my ($space,$domain,$name,@dir)=split('/',$uri);
5989: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5990: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5991: my %setters;
5992: my ($startblock,$endblock) =
5993: &Apache::loncommon::blockcheck(\%setters,'port');
5994: if ($startblock && $endblock) {
5995: return 'B';
5996: } else {
5997: return 'F';
5998: }
5999: }
6000:
6001: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6002: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6003: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6004: if (exists($env{'request.course.id'})) {
6005: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6006: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6007: if (($domain eq $cdom) && ($name eq $cnum)) {
6008: my $courseprivid=$env{'request.course.id'};
6009: $courseprivid=~s/\_/\//;
6010: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6011: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6012: return $1;
6013: } else {
6014: if ($env{'request.course.sec'}) {
6015: $courseprivid.='/'.$env{'request.course.sec'};
6016: }
6017: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6018: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6019: return $2;
6020: }
6021: }
6022: }
6023: }
6024: }
6025:
6026: # Free bre to public access
6027:
6028: if ($priv eq 'bre') {
6029: my $copyright=&metadata($uri,'copyright');
6030: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6031: return 'F';
6032: }
6033: if ($copyright eq 'priv') {
6034: $uri=~/([^\/]+)\/([^\/]+)\//;
6035: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6036: return '';
6037: }
6038: }
6039: if ($copyright eq 'domain') {
6040: $uri=~/([^\/]+)\/([^\/]+)\//;
6041: unless (($env{'user.domain'} eq $1) ||
6042: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6043: return '';
6044: }
6045: }
6046: if ($env{'request.role'}=~ /li\.\//) {
6047: # Library role, so allow browsing of resources in this domain.
6048: return 'F';
6049: }
6050: if ($copyright eq 'custom') {
6051: unless (&customaccess($priv,$uri)) { return ''; }
6052: }
6053: }
6054: # Domain coordinator is trying to create a course
6055: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6056: # uri is the requested domain in this case.
6057: # comparison to 'request.role.domain' shows if the user has selected
6058: # a role of dc for the domain in question.
6059: return 'F' if ($uri eq $env{'request.role.domain'});
6060: }
6061:
6062: my $thisallowed='';
6063: my $statecond=0;
6064: my $courseprivid='';
6065:
6066: my $ownaccess;
6067: # Community Coordinator or Assistant Co-author browsing resource space.
6068: if (($priv eq 'bro') && ($env{'user.author'})) {
6069: if ($uri eq '') {
6070: $ownaccess = 1;
6071: } else {
6072: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6073: my $udom = $env{'user.domain'};
6074: my $uname = $env{'user.name'};
6075: if ($uri =~ m{^\Q$udom\E/?$}) {
6076: $ownaccess = 1;
6077: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6078: unless ($uri =~ m{\.\./}) {
6079: $ownaccess = 1;
6080: }
6081: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6082: my $now = time;
6083: if ($uri =~ m{^([^/]+)/?$}) {
6084: my $adom = $1;
6085: foreach my $key (keys(%env)) {
6086: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6087: my ($start,$end) = split('.',$env{$key});
6088: if (($now >= $start) && (!$end || $end < $now)) {
6089: $ownaccess = 1;
6090: last;
6091: }
6092: }
6093: }
6094: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6095: my $adom = $1;
6096: my $aname = $2;
6097: foreach my $role ('ca','aa') {
6098: if ($env{"user.role.$role./$adom/$aname"}) {
6099: my ($start,$end) =
6100: split('.',$env{"user.role.$role./$adom/$aname"});
6101: if (($now >= $start) && (!$end || $end < $now)) {
6102: $ownaccess = 1;
6103: last;
6104: }
6105: }
6106: }
6107: }
6108: }
6109: }
6110: }
6111: }
6112:
6113: # Course
6114:
6115: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6116: unless (($priv eq 'bro') && (!$ownaccess)) {
6117: $thisallowed.=$1;
6118: }
6119: }
6120:
6121: # Domain
6122:
6123: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6124: =~/\Q$priv\E\&([^\:]*)/) {
6125: unless (($priv eq 'bro') && (!$ownaccess)) {
6126: $thisallowed.=$1;
6127: }
6128: }
6129:
6130: # User who is not author or co-author might still be able to edit
6131: # resource of an author in the domain (e.g., if Domain Coordinator).
6132: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6133: (&allowed('mdc',$env{'request.course.id'}))) {
6134: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6135: $thisallowed.=$1;
6136: }
6137: }
6138:
6139: # Course: uri itself is a course
6140: my $courseuri=$uri;
6141: $courseuri=~s/\_(\d)/\/$1/;
6142: $courseuri=~s/^([^\/])/\/$1/;
6143:
6144: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6145: =~/\Q$priv\E\&([^\:]*)/) {
6146: unless (($priv eq 'bro') && (!$ownaccess)) {
6147: $thisallowed.=$1;
6148: }
6149: }
6150:
6151: # URI is an uploaded document for this course, default permissions don't matter
6152: # not allowing 'edit' access (editupload) to uploaded course docs
6153: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6154: $thisallowed='';
6155: my ($match)=&is_on_map($uri);
6156: if ($match) {
6157: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6158: =~/\Q$priv\E\&([^\:]*)/) {
6159: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6160: if (@blockers > 0) {
6161: $thisallowed = 'B';
6162: } else {
6163: $thisallowed.=$1;
6164: }
6165: }
6166: } else {
6167: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6168: if ($refuri) {
6169: if ($refuri =~ m|^/adm/|) {
6170: $thisallowed='F';
6171: } else {
6172: $refuri=&declutter($refuri);
6173: my ($match) = &is_on_map($refuri);
6174: if ($match) {
6175: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6176: if (@blockers > 0) {
6177: $thisallowed = 'B';
6178: } else {
6179: $thisallowed='F';
6180: }
6181: }
6182: }
6183: }
6184: }
6185: }
6186:
6187: if ($priv eq 'bre'
6188: && $thisallowed ne 'F'
6189: && $thisallowed ne '2'
6190: && &is_portfolio_url($uri)) {
6191: $thisallowed = &portfolio_access($uri);
6192: }
6193:
6194: # Full access at system, domain or course-wide level? Exit.
6195: if ($thisallowed=~/F/) {
6196: return 'F';
6197: }
6198:
6199: # If this is generating or modifying users, exit with special codes
6200:
6201: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6202: if (($priv eq 'cca') || ($priv eq 'caa')) {
6203: my ($audom,$auname)=split('/',$uri);
6204: # no author name given, so this just checks on the general right to make a co-author in this domain
6205: unless ($auname) { return $thisallowed; }
6206: # an author name is given, so we are about to actually make a co-author for a certain account
6207: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6208: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6209: ($audom ne $env{'request.role.domain'}))) { return ''; }
6210: }
6211: return $thisallowed;
6212: }
6213: #
6214: # Gathered so far: system, domain and course wide privileges
6215: #
6216: # Course: See if uri or referer is an individual resource that is part of
6217: # the course
6218:
6219: if ($env{'request.course.id'}) {
6220:
6221: $courseprivid=$env{'request.course.id'};
6222: if ($env{'request.course.sec'}) {
6223: $courseprivid.='/'.$env{'request.course.sec'};
6224: }
6225: $courseprivid=~s/\_/\//;
6226: my $checkreferer=1;
6227: my ($match,$cond)=&is_on_map($uri);
6228: if ($match) {
6229: $statecond=$cond;
6230: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6231: =~/\Q$priv\E\&([^\:]*)/) {
6232: my $value = $1;
6233: if ($priv eq 'bre') {
6234: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6235: if (@blockers > 0) {
6236: $thisallowed = 'B';
6237: } else {
6238: $thisallowed.=$value;
6239: }
6240: } else {
6241: $thisallowed.=$value;
6242: }
6243: $checkreferer=0;
6244: }
6245: }
6246:
6247: if ($checkreferer) {
6248: my $refuri=$env{'httpref.'.$orguri};
6249: unless ($refuri) {
6250: foreach my $key (keys(%env)) {
6251: if ($key=~/^httpref\..*\*/) {
6252: my $pattern=$key;
6253: $pattern=~s/^httpref\.\/res\///;
6254: $pattern=~s/\*/\[\^\/\]\+/g;
6255: $pattern=~s/\//\\\//g;
6256: if ($orguri=~/$pattern/) {
6257: $refuri=$env{$key};
6258: }
6259: }
6260: }
6261: }
6262:
6263: if ($refuri) {
6264: $refuri=&declutter($refuri);
6265: my ($match,$cond)=&is_on_map($refuri);
6266: if ($match) {
6267: my $refstatecond=$cond;
6268: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6269: =~/\Q$priv\E\&([^\:]*)/) {
6270: my $value = $1;
6271: if ($priv eq 'bre') {
6272: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6273: if (@blockers > 0) {
6274: $thisallowed = 'B';
6275: } else {
6276: $thisallowed.=$value;
6277: }
6278: } else {
6279: $thisallowed.=$value;
6280: }
6281: $uri=$refuri;
6282: $statecond=$refstatecond;
6283: }
6284: }
6285: }
6286: }
6287: }
6288:
6289: #
6290: # Gathered now: all privileges that could apply, and condition number
6291: #
6292: #
6293: # Full or no access?
6294: #
6295:
6296: if ($thisallowed=~/F/) {
6297: return 'F';
6298: }
6299:
6300: unless ($thisallowed) {
6301: return '';
6302: }
6303:
6304: # Restrictions exist, deal with them
6305: #
6306: # C:according to course preferences
6307: # R:according to resource settings
6308: # L:unless locked
6309: # X:according to user session state
6310: #
6311:
6312: # Possibly locked functionality, check all courses
6313: # Locks might take effect only after 10 minutes cache expiration for other
6314: # courses, and 2 minutes for current course
6315:
6316: my $envkey;
6317: if ($thisallowed=~/L/) {
6318: foreach $envkey (keys(%env)) {
6319: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6320: my $courseid=$2;
6321: my $roleid=$1.'.'.$2;
6322: $courseid=~s/^\///;
6323: my $expiretime=600;
6324: if ($env{'request.role'} eq $roleid) {
6325: $expiretime=120;
6326: }
6327: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6328: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6329: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6330: &coursedescription($courseid,{'freshen_cache' => 1});
6331: }
6332: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6333: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6334: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6335: &log($env{'user.domain'},$env{'user.name'},
6336: $env{'user.home'},
6337: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6338: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6339: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6340: return '';
6341: }
6342: }
6343: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6344: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6345: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6346: &log($env{'user.domain'},$env{'user.name'},
6347: $env{'user.home'},
6348: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6349: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6350: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6351: return '';
6352: }
6353: }
6354: }
6355: }
6356: }
6357:
6358: #
6359: # Rest of the restrictions depend on selected course
6360: #
6361:
6362: unless ($env{'request.course.id'}) {
6363: if ($thisallowed eq 'A') {
6364: return 'A';
6365: } elsif ($thisallowed eq 'B') {
6366: return 'B';
6367: } else {
6368: return '1';
6369: }
6370: }
6371:
6372: #
6373: # Now user is definitely in a course
6374: #
6375:
6376:
6377: # Course preferences
6378:
6379: if ($thisallowed=~/C/) {
6380: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6381: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6382: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6383: =~/\Q$rolecode\E/) {
6384: if (($priv ne 'pch') && ($priv ne 'plc')) {
6385: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6386: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6387: $env{'request.course.id'});
6388: }
6389: return '';
6390: }
6391:
6392: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6393: =~/\Q$unamedom\E/) {
6394: if (($priv ne 'pch') && ($priv ne 'plc')) {
6395: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6396: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6397: $env{'request.course.id'});
6398: }
6399: return '';
6400: }
6401: }
6402:
6403: # Resource preferences
6404:
6405: if ($thisallowed=~/R/) {
6406: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6407: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6408: if (($priv ne 'pch') && ($priv ne 'plc')) {
6409: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6410: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6411: }
6412: return '';
6413: }
6414: }
6415:
6416: # Restricted by state or randomout?
6417:
6418: if ($thisallowed=~/X/) {
6419: if ($env{'acc.randomout'}) {
6420: if (!$symb) { $symb=&symbread($uri,1); }
6421: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6422: return '';
6423: }
6424: }
6425: if (&condval($statecond)) {
6426: return '2';
6427: } else {
6428: return '';
6429: }
6430: }
6431:
6432: if ($thisallowed eq 'A') {
6433: return 'A';
6434: } elsif ($thisallowed eq 'B') {
6435: return 'B';
6436: }
6437: return 'F';
6438: }
6439:
6440: sub get_comm_blocks {
6441: my ($cdom,$cnum) = @_;
6442: if ($cdom eq '' || $cnum eq '') {
6443: return unless ($env{'request.course.id'});
6444: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6445: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6446: }
6447: my %commblocks;
6448: my $hashid=$cdom.'_'.$cnum;
6449: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6450: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6451: %commblocks = %{$blocksref};
6452: } else {
6453: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6454: my $cachetime = 600;
6455: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6456: }
6457: return %commblocks;
6458: }
6459:
6460: sub has_comm_blocking {
6461: my ($priv,$symb,$uri,$blocks) = @_;
6462: return unless ($env{'request.course.id'});
6463: return unless ($priv eq 'bre');
6464: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6465: my %commblocks;
6466: if (ref($blocks) eq 'HASH') {
6467: %commblocks = %{$blocks};
6468: } else {
6469: %commblocks = &get_comm_blocks();
6470: }
6471: return unless (keys(%commblocks) > 0);
6472: if (!$symb) { $symb=&symbread($uri,1); }
6473: my ($map,$resid,undef)=&decode_symb($symb);
6474: my %tocheck = (
6475: maps => $map,
6476: resources => $symb,
6477: );
6478: my @blockers;
6479: my $now = time;
6480: my $navmap = Apache::lonnavmaps::navmap->new();
6481: foreach my $block (keys(%commblocks)) {
6482: if ($block =~ /^(\d+)____(\d+)$/) {
6483: my ($start,$end) = ($1,$2);
6484: if ($start <= $now && $end >= $now) {
6485: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6486: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6487: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6488: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6489: unless (grep(/^\Q$block\E$/,@blockers)) {
6490: push(@blockers,$block);
6491: }
6492: }
6493: }
6494: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6495: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6496: unless (grep(/^\Q$block\E$/,@blockers)) {
6497: push(@blockers,$block);
6498: }
6499: }
6500: }
6501: }
6502: }
6503: }
6504: } elsif ($block =~ /^firstaccess____(.+)$/) {
6505: my $item = $1;
6506: my @to_test;
6507: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6508: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6509: my $check_interval;
6510: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6511: my @interval;
6512: my $type = 'map';
6513: if ($item eq 'course') {
6514: $type = 'course';
6515: @interval=&EXT("resource.0.interval");
6516: } else {
6517: if ($item =~ /___\d+___/) {
6518: $type = 'resource';
6519: @interval=&EXT("resource.0.interval",$item);
6520: if (ref($navmap)) {
6521: my $res = $navmap->getBySymb($item);
6522: push(@to_test,$res);
6523: }
6524: } else {
6525: my $mapsymb = &symbread($item,1);
6526: if ($mapsymb) {
6527: if (ref($navmap)) {
6528: my $mapres = $navmap->getBySymb($mapsymb);
6529: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6530: foreach my $res (@to_test) {
6531: my $symb = $res->symb();
6532: next if ($symb eq $mapsymb);
6533: if ($symb ne '') {
6534: @interval=&EXT("resource.0.interval",$symb);
6535: last;
6536: }
6537: }
6538: }
6539: }
6540: }
6541: }
6542: if ($interval[0] =~ /\d+/) {
6543: my $first_access;
6544: if ($type eq 'resource') {
6545: $first_access=&get_first_access($interval[1],$item);
6546: } elsif ($type eq 'map') {
6547: $first_access=&get_first_access($interval[1],undef,$item);
6548: } else {
6549: $first_access=&get_first_access($interval[1]);
6550: }
6551: if ($first_access) {
6552: my $timesup = $first_access+$interval[0];
6553: if ($timesup > $now) {
6554: foreach my $res (@to_test) {
6555: if ($res->is_problem()) {
6556: if ($res->completable()) {
6557: unless (grep(/^\Q$block\E$/,@blockers)) {
6558: push(@blockers,$block);
6559: }
6560: last;
6561: }
6562: }
6563: }
6564: }
6565: }
6566: }
6567: }
6568: }
6569: }
6570: }
6571: }
6572: return @blockers;
6573: }
6574:
6575: sub check_docs_block {
6576: my ($docsblock,$tocheck) =@_;
6577: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6578: return;
6579: }
6580: if (ref($docsblock->{'maps'}) eq 'HASH') {
6581: if ($tocheck->{'maps'}) {
6582: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6583: return 1;
6584: }
6585: }
6586: }
6587: if (ref($docsblock->{'resources'}) eq 'HASH') {
6588: if ($tocheck->{'resources'}) {
6589: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6590: return 1;
6591: }
6592: }
6593: }
6594: return;
6595: }
6596:
6597: #
6598: # Removes the versino from a URI and
6599: # splits it in to its filename and path to the filename.
6600: # Seems like File::Basename could have done this more clearly.
6601: # Parameters:
6602: # $uri - input URI
6603: # Returns:
6604: # Two element list consisting of
6605: # $pathname - the URI up to and excluding the trailing /
6606: # $filename - The part of the URI following the last /
6607: # NOTE:
6608: # Another realization of this is simply:
6609: # use File::Basename;
6610: # ...
6611: # $uri = shift;
6612: # $filename = basename($uri);
6613: # $path = dirname($uri);
6614: # return ($filename, $path);
6615: #
6616: # The implementation below is probably faster however.
6617: #
6618: sub split_uri_for_cond {
6619: my $uri=&deversion(&declutter(shift));
6620: my @uriparts=split(/\//,$uri);
6621: my $filename=pop(@uriparts);
6622: my $pathname=join('/',@uriparts);
6623: return ($pathname,$filename);
6624: }
6625: # --------------------------------------------------- Is a resource on the map?
6626:
6627: sub is_on_map {
6628: my ($pathname,$filename) = &split_uri_for_cond(shift);
6629: #Trying to find the conditional for the file
6630: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6631: /\&\Q$filename\E\:([\d\|]+)\&/);
6632: if ($match) {
6633: return (1,$1);
6634: } else {
6635: return (0,0);
6636: }
6637: }
6638:
6639: # --------------------------------------------------------- Get symb from alias
6640:
6641: sub get_symb_from_alias {
6642: my $symb=shift;
6643: my ($map,$resid,$url)=&decode_symb($symb);
6644: # Already is a symb
6645: if ($url) { return $symb; }
6646: # Must be an alias
6647: my $aliassymb='';
6648: my %bighash;
6649: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6650: &GDBM_READER(),0640)) {
6651: my $rid=$bighash{'mapalias_'.$symb};
6652: if ($rid) {
6653: my ($mapid,$resid)=split(/\./,$rid);
6654: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6655: $resid,$bighash{'src_'.$rid});
6656: }
6657: untie %bighash;
6658: }
6659: return $aliassymb;
6660: }
6661:
6662: # ----------------------------------------------------------------- Define Role
6663:
6664: sub definerole {
6665: if (allowed('mcr','/')) {
6666: my ($rolename,$sysrole,$domrole,$courole)=@_;
6667: foreach my $role (split(':',$sysrole)) {
6668: my ($crole,$cqual)=split(/\&/,$role);
6669: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6670: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6671: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6672: return "refused:s:$crole&$cqual";
6673: }
6674: }
6675: }
6676: foreach my $role (split(':',$domrole)) {
6677: my ($crole,$cqual)=split(/\&/,$role);
6678: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6679: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6680: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6681: return "refused:d:$crole&$cqual";
6682: }
6683: }
6684: }
6685: foreach my $role (split(':',$courole)) {
6686: my ($crole,$cqual)=split(/\&/,$role);
6687: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6688: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6689: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6690: return "refused:c:$crole&$cqual";
6691: }
6692: }
6693: }
6694: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6695: "$env{'user.domain'}:$env{'user.name'}:".
6696: "rolesdef_$rolename=".
6697: escape($sysrole.'_'.$domrole.'_'.$courole);
6698: return reply($command,$env{'user.home'});
6699: } else {
6700: return 'refused';
6701: }
6702: }
6703:
6704: # ---------------- Make a metadata query against the network of library servers
6705:
6706: sub metadata_query {
6707: my ($query,$custom,$customshow,$server_array)=@_;
6708: my %rhash;
6709: my %libserv = &all_library();
6710: my @server_list = (defined($server_array) ? @$server_array
6711: : keys(%libserv) );
6712: for my $server (@server_list) {
6713: unless ($custom or $customshow) {
6714: my $reply=&reply("querysend:".&escape($query),$server);
6715: $rhash{$server}=$reply;
6716: }
6717: else {
6718: my $reply=&reply("querysend:".&escape($query).':'.
6719: &escape($custom).':'.&escape($customshow),
6720: $server);
6721: $rhash{$server}=$reply;
6722: }
6723: }
6724: return \%rhash;
6725: }
6726:
6727: # ----------------------------------------- Send log queries and wait for reply
6728:
6729: sub log_query {
6730: my ($uname,$udom,$query,%filters)=@_;
6731: my $uhome=&homeserver($uname,$udom);
6732: if ($uhome eq 'no_host') { return 'error: no_host'; }
6733: my $uhost=&hostname($uhome);
6734: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6735: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6736: $uhome);
6737: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6738: return get_query_reply($queryid);
6739: }
6740:
6741: # -------------------------- Update MySQL table for portfolio file
6742:
6743: sub update_portfolio_table {
6744: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6745: if ($group ne '') {
6746: $file_name =~s /^\Q$group\E//;
6747: }
6748: my $homeserver = &homeserver($uname,$udom);
6749: my $queryid=
6750: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6751: ':'.&escape($file_name).':'.$action,$homeserver);
6752: my $reply = &get_query_reply($queryid);
6753: return $reply;
6754: }
6755:
6756: # -------------------------- Update MySQL allusers table
6757:
6758: sub update_allusers_table {
6759: my ($uname,$udom,$names) = @_;
6760: my $homeserver = &homeserver($uname,$udom);
6761: my $queryid=
6762: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6763: 'lastname='.&escape($names->{'lastname'}).'%%'.
6764: 'firstname='.&escape($names->{'firstname'}).'%%'.
6765: 'middlename='.&escape($names->{'middlename'}).'%%'.
6766: 'generation='.&escape($names->{'generation'}).'%%'.
6767: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6768: 'id='.&escape($names->{'id'}),$homeserver);
6769: return;
6770: }
6771:
6772: # ------- Request retrieval of institutional classlists for course(s)
6773:
6774: sub fetch_enrollment_query {
6775: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6776: my $homeserver;
6777: my $maxtries = 1;
6778: if ($context eq 'automated') {
6779: $homeserver = $perlvar{'lonHostID'};
6780: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6781: } else {
6782: $homeserver = &homeserver($cnum,$dom);
6783: }
6784: my $host=&hostname($homeserver);
6785: my $cmd = '';
6786: foreach my $affiliate (keys(%{$affiliatesref})) {
6787: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6788: }
6789: $cmd =~ s/%%$//;
6790: $cmd = &escape($cmd);
6791: my $query = 'fetchenrollment';
6792: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6793: unless ($queryid=~/^\Q$host\E\_/) {
6794: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6795: return 'error: '.$queryid;
6796: }
6797: my $reply = &get_query_reply($queryid);
6798: my $tries = 1;
6799: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6800: $reply = &get_query_reply($queryid);
6801: $tries ++;
6802: }
6803: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6804: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6805: } else {
6806: my @responses = split(/:/,$reply);
6807: if ($homeserver eq $perlvar{'lonHostID'}) {
6808: foreach my $line (@responses) {
6809: my ($key,$value) = split(/=/,$line,2);
6810: $$replyref{$key} = $value;
6811: }
6812: } else {
6813: my $pathname = LONCAPA::tempdir();
6814: foreach my $line (@responses) {
6815: my ($key,$value) = split(/=/,$line);
6816: $$replyref{$key} = $value;
6817: if ($value > 0) {
6818: foreach my $item (@{$$affiliatesref{$key}}) {
6819: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6820: my $destname = $pathname.'/'.$filename;
6821: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6822: if ($xml_classlist =~ /^error/) {
6823: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6824: } else {
6825: if ( open(FILE,">$destname") ) {
6826: print FILE &unescape($xml_classlist);
6827: close(FILE);
6828: } else {
6829: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6830: }
6831: }
6832: }
6833: }
6834: }
6835: }
6836: return 'ok';
6837: }
6838: return 'error';
6839: }
6840:
6841: sub get_query_reply {
6842: my $queryid=shift;
6843: my $replyfile=LONCAPA::tempdir().$queryid;
6844: my $reply='';
6845: for (1..100) {
6846: sleep 2;
6847: if (-e $replyfile.'.end') {
6848: if (open(my $fh,$replyfile)) {
6849: $reply = join('',<$fh>);
6850: close($fh);
6851: } else { return 'error: reply_file_error'; }
6852: return &unescape($reply);
6853: }
6854: }
6855: return 'timeout:'.$queryid;
6856: }
6857:
6858: sub courselog_query {
6859: #
6860: # possible filters:
6861: # url: url or symb
6862: # username
6863: # domain
6864: # action: view, submit, grade
6865: # start: timestamp
6866: # end: timestamp
6867: #
6868: my (%filters)=@_;
6869: unless ($env{'request.course.id'}) { return 'no_course'; }
6870: if ($filters{'url'}) {
6871: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6872: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6873: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6874: }
6875: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6876: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6877: return &log_query($cname,$cdom,'courselog',%filters);
6878: }
6879:
6880: sub userlog_query {
6881: #
6882: # possible filters:
6883: # action: log check role
6884: # start: timestamp
6885: # end: timestamp
6886: #
6887: my ($uname,$udom,%filters)=@_;
6888: return &log_query($uname,$udom,'userlog',%filters);
6889: }
6890:
6891: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6892:
6893: sub auto_run {
6894: my ($cnum,$cdom) = @_;
6895: my $response = 0;
6896: my $settings;
6897: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6898: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6899: $settings = $domconfig{'autoenroll'};
6900: if ($settings->{'run'} eq '1') {
6901: $response = 1;
6902: }
6903: } else {
6904: my $homeserver;
6905: if (&is_course($cdom,$cnum)) {
6906: $homeserver = &homeserver($cnum,$cdom);
6907: } else {
6908: $homeserver = &domain($cdom,'primary');
6909: }
6910: if ($homeserver ne 'no_host') {
6911: $response = &reply('autorun:'.$cdom,$homeserver);
6912: }
6913: }
6914: return $response;
6915: }
6916:
6917: sub auto_get_sections {
6918: my ($cnum,$cdom,$inst_coursecode) = @_;
6919: my $homeserver;
6920: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6921: $homeserver = &homeserver($cnum,$cdom);
6922: }
6923: if (!defined($homeserver)) {
6924: if ($cdom =~ /^$match_domain$/) {
6925: $homeserver = &domain($cdom,'primary');
6926: }
6927: }
6928: my @secs;
6929: if (defined($homeserver)) {
6930: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6931: unless ($response eq 'refused') {
6932: @secs = split(/:/,$response);
6933: }
6934: }
6935: return @secs;
6936: }
6937:
6938: sub auto_new_course {
6939: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6940: my $homeserver = &homeserver($cnum,$cdom);
6941: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6942: return $response;
6943: }
6944:
6945: sub auto_validate_courseID {
6946: my ($cnum,$cdom,$inst_course_id) = @_;
6947: my $homeserver = &homeserver($cnum,$cdom);
6948: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6949: return $response;
6950: }
6951:
6952: sub auto_validate_instcode {
6953: my ($cnum,$cdom,$instcode,$owner) = @_;
6954: my ($homeserver,$response);
6955: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6956: $homeserver = &homeserver($cnum,$cdom);
6957: }
6958: if (!defined($homeserver)) {
6959: if ($cdom =~ /^$match_domain$/) {
6960: $homeserver = &domain($cdom,'primary');
6961: }
6962: }
6963: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6964: &escape($instcode).':'.&escape($owner),$homeserver));
6965: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6966: return ($outcome,$description);
6967: }
6968:
6969: sub auto_create_password {
6970: my ($cnum,$cdom,$authparam,$udom) = @_;
6971: my ($homeserver,$response);
6972: my $create_passwd = 0;
6973: my $authchk = '';
6974: if ($udom =~ /^$match_domain$/) {
6975: $homeserver = &domain($udom,'primary');
6976: }
6977: if ($homeserver eq '') {
6978: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6979: $homeserver = &homeserver($cnum,$cdom);
6980: }
6981: }
6982: if ($homeserver eq '') {
6983: $authchk = 'nodomain';
6984: } else {
6985: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6986: if ($response eq 'refused') {
6987: $authchk = 'refused';
6988: } else {
6989: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6990: }
6991: }
6992: return ($authparam,$create_passwd,$authchk);
6993: }
6994:
6995: sub auto_photo_permission {
6996: my ($cnum,$cdom,$students) = @_;
6997: my $homeserver = &homeserver($cnum,$cdom);
6998: my ($outcome,$perm_reqd,$conditions) =
6999: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7000: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7001: return (undef,undef);
7002: }
7003: return ($outcome,$perm_reqd,$conditions);
7004: }
7005:
7006: sub auto_checkphotos {
7007: my ($uname,$udom,$pid) = @_;
7008: my $homeserver = &homeserver($uname,$udom);
7009: my ($result,$resulttype);
7010: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7011: &escape($uname).':'.&escape($pid),
7012: $homeserver));
7013: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7014: return (undef,undef);
7015: }
7016: if ($outcome) {
7017: ($result,$resulttype) = split(/:/,$outcome);
7018: }
7019: return ($result,$resulttype);
7020: }
7021:
7022: sub auto_photochoice {
7023: my ($cnum,$cdom) = @_;
7024: my $homeserver = &homeserver($cnum,$cdom);
7025: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7026: &escape($cdom),
7027: $homeserver)));
7028: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7029: return (undef,undef);
7030: }
7031: return ($update,$comment);
7032: }
7033:
7034: sub auto_photoupdate {
7035: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7036: my $homeserver = &homeserver($cnum,$dom);
7037: my $host=&hostname($homeserver);
7038: my $cmd = '';
7039: my $maxtries = 1;
7040: foreach my $affiliate (keys(%{$affiliatesref})) {
7041: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7042: }
7043: $cmd =~ s/%%$//;
7044: $cmd = &escape($cmd);
7045: my $query = 'institutionalphotos';
7046: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7047: unless ($queryid=~/^\Q$host\E\_/) {
7048: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7049: return 'error: '.$queryid;
7050: }
7051: my $reply = &get_query_reply($queryid);
7052: my $tries = 1;
7053: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7054: $reply = &get_query_reply($queryid);
7055: $tries ++;
7056: }
7057: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7058: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7059: } else {
7060: my @responses = split(/:/,$reply);
7061: my $outcome = shift(@responses);
7062: foreach my $item (@responses) {
7063: my ($key,$value) = split(/=/,$item);
7064: $$photo{$key} = $value;
7065: }
7066: return $outcome;
7067: }
7068: return 'error';
7069: }
7070:
7071: sub auto_instcode_format {
7072: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7073: $cat_order) = @_;
7074: my $courses = '';
7075: my @homeservers;
7076: if ($caller eq 'global') {
7077: my %servers = &get_servers($codedom,'library');
7078: foreach my $tryserver (keys(%servers)) {
7079: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7080: push(@homeservers,$tryserver);
7081: }
7082: }
7083: } elsif ($caller eq 'requests') {
7084: if ($codedom =~ /^$match_domain$/) {
7085: my $chome = &domain($codedom,'primary');
7086: unless ($chome eq 'no_host') {
7087: push(@homeservers,$chome);
7088: }
7089: }
7090: } else {
7091: push(@homeservers,&homeserver($caller,$codedom));
7092: }
7093: foreach my $code (keys(%{$instcodes})) {
7094: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7095: }
7096: chop($courses);
7097: my $ok_response = 0;
7098: my $response;
7099: while (@homeservers > 0 && $ok_response == 0) {
7100: my $server = shift(@homeservers);
7101: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7102: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7103: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7104: split(/:/,$response);
7105: %{$codes} = (%{$codes},&str2hash($codes_str));
7106: push(@{$codetitles},&str2array($codetitles_str));
7107: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7108: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7109: $ok_response = 1;
7110: }
7111: }
7112: if ($ok_response) {
7113: return 'ok';
7114: } else {
7115: return $response;
7116: }
7117: }
7118:
7119: sub auto_instcode_defaults {
7120: my ($domain,$returnhash,$code_order) = @_;
7121: my @homeservers;
7122:
7123: my %servers = &get_servers($domain,'library');
7124: foreach my $tryserver (keys(%servers)) {
7125: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7126: push(@homeservers,$tryserver);
7127: }
7128: }
7129:
7130: my $response;
7131: foreach my $server (@homeservers) {
7132: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7133: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7134:
7135: foreach my $pair (split(/\&/,$response)) {
7136: my ($name,$value)=split(/\=/,$pair);
7137: if ($name eq 'code_order') {
7138: @{$code_order} = split(/\&/,&unescape($value));
7139: } else {
7140: $returnhash->{&unescape($name)}=&unescape($value);
7141: }
7142: }
7143: return 'ok';
7144: }
7145:
7146: return $response;
7147: }
7148:
7149: sub auto_possible_instcodes {
7150: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7151: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7152: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7153: return;
7154: }
7155: my (@homeservers,$uhome);
7156: if (defined(&domain($domain,'primary'))) {
7157: $uhome=&domain($domain,'primary');
7158: push(@homeservers,&domain($domain,'primary'));
7159: } else {
7160: my %servers = &get_servers($domain,'library');
7161: foreach my $tryserver (keys(%servers)) {
7162: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7163: push(@homeservers,$tryserver);
7164: }
7165: }
7166: }
7167: my $response;
7168: foreach my $server (@homeservers) {
7169: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7170: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7171: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7172: split(':',$response);
7173: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7174: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7175: foreach my $item (split('&',$cat_title)) {
7176: my ($name,$value)=split('=',$item);
7177: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7178: }
7179: foreach my $item (split('&',$cat_order)) {
7180: my ($name,$value)=split('=',$item);
7181: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7182: }
7183: return 'ok';
7184: }
7185: return $response;
7186: }
7187:
7188: sub auto_courserequest_checks {
7189: my ($dom) = @_;
7190: my ($homeserver,%validations);
7191: if ($dom =~ /^$match_domain$/) {
7192: $homeserver = &domain($dom,'primary');
7193: }
7194: unless ($homeserver eq 'no_host') {
7195: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7196: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7197: my @items = split(/&/,$response);
7198: foreach my $item (@items) {
7199: my ($key,$value) = split('=',$item);
7200: $validations{&unescape($key)} = &thaw_unescape($value);
7201: }
7202: }
7203: }
7204: return %validations;
7205: }
7206:
7207: sub auto_courserequest_validation {
7208: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7209: my ($homeserver,$response);
7210: if ($dom =~ /^$match_domain$/) {
7211: $homeserver = &domain($dom,'primary');
7212: }
7213: unless ($homeserver eq 'no_host') {
7214:
7215: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7216: ':'.&escape($crstype).':'.&escape($inststatuslist).
7217: ':'.&escape($instcode).':'.&escape($instseclist),
7218: $homeserver));
7219: }
7220: return $response;
7221: }
7222:
7223: sub auto_validate_class_sec {
7224: my ($cdom,$cnum,$owners,$inst_class) = @_;
7225: my $homeserver = &homeserver($cnum,$cdom);
7226: my $ownerlist;
7227: if (ref($owners) eq 'ARRAY') {
7228: $ownerlist = join(',',@{$owners});
7229: } else {
7230: $ownerlist = $owners;
7231: }
7232: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7233: &escape($ownerlist).':'.$cdom,$homeserver);
7234: return $response;
7235: }
7236:
7237: # ------------------------------------------------------- Course Group routines
7238:
7239: sub get_coursegroups {
7240: my ($cdom,$cnum,$group,$namespace) = @_;
7241: return(&dump($namespace,$cdom,$cnum,$group));
7242: }
7243:
7244: sub modify_coursegroup {
7245: my ($cdom,$cnum,$groupsettings) = @_;
7246: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7247: }
7248:
7249: sub toggle_coursegroup_status {
7250: my ($cdom,$cnum,$group,$action) = @_;
7251: my ($from_namespace,$to_namespace);
7252: if ($action eq 'delete') {
7253: $from_namespace = 'coursegroups';
7254: $to_namespace = 'deleted_groups';
7255: } else {
7256: $from_namespace = 'deleted_groups';
7257: $to_namespace = 'coursegroups';
7258: }
7259: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7260: if (my $tmp = &error(%curr_group)) {
7261: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7262: return ('read error',$tmp);
7263: } else {
7264: my %savedsettings = %curr_group;
7265: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7266: my $deloutcome;
7267: if ($result eq 'ok') {
7268: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7269: } else {
7270: return ('write error',$result);
7271: }
7272: if ($deloutcome eq 'ok') {
7273: return 'ok';
7274: } else {
7275: return ('delete error',$deloutcome);
7276: }
7277: }
7278: }
7279:
7280: sub modify_group_roles {
7281: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7282: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7283: my $role = 'gr/'.&escape($userprivs);
7284: my ($uname,$udom) = split(/:/,$user);
7285: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7286: if ($result eq 'ok') {
7287: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7288: }
7289: return $result;
7290: }
7291:
7292: sub modify_coursegroup_membership {
7293: my ($cdom,$cnum,$membership) = @_;
7294: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7295: return $result;
7296: }
7297:
7298: sub get_active_groups {
7299: my ($udom,$uname,$cdom,$cnum) = @_;
7300: my $now = time;
7301: my %groups = ();
7302: foreach my $key (keys(%env)) {
7303: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7304: my ($start,$end) = split(/\./,$env{$key});
7305: if (($end!=0) && ($end<$now)) { next; }
7306: if (($start!=0) && ($start>$now)) { next; }
7307: if ($1 eq $cdom && $2 eq $cnum) {
7308: $groups{$3} = $env{$key} ;
7309: }
7310: }
7311: }
7312: return %groups;
7313: }
7314:
7315: sub get_group_membership {
7316: my ($cdom,$cnum,$group) = @_;
7317: return(&dump('groupmembership',$cdom,$cnum,$group));
7318: }
7319:
7320: sub get_users_groups {
7321: my ($udom,$uname,$courseid) = @_;
7322: my @usersgroups;
7323: my $cachetime=1800;
7324:
7325: my $hashid="$udom:$uname:$courseid";
7326: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7327: if (defined($cached)) {
7328: @usersgroups = split(/:/,$grouplist);
7329: } else {
7330: $grouplist = '';
7331: my $courseurl = &courseid_to_courseurl($courseid);
7332: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7333: my $access_end = $env{'course.'.$courseid.
7334: '.default_enrollment_end_date'};
7335: my $now = time;
7336: foreach my $key (keys(%roleshash)) {
7337: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7338: my $group = $1;
7339: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7340: my $start = $2;
7341: my $end = $1;
7342: if ($start == -1) { next; } # deleted from group
7343: if (($start!=0) && ($start>$now)) { next; }
7344: if (($end!=0) && ($end<$now)) {
7345: if ($access_end && $access_end < $now) {
7346: if ($access_end - $end < 86400) {
7347: push(@usersgroups,$group);
7348: }
7349: }
7350: next;
7351: }
7352: push(@usersgroups,$group);
7353: }
7354: }
7355: }
7356: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7357: $grouplist = join(':',@usersgroups);
7358: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7359: }
7360: return @usersgroups;
7361: }
7362:
7363: sub devalidate_getgroups_cache {
7364: my ($udom,$uname,$cdom,$cnum)=@_;
7365: my $courseid = $cdom.'_'.$cnum;
7366:
7367: my $hashid="$udom:$uname:$courseid";
7368: &devalidate_cache_new('getgroups',$hashid);
7369: }
7370:
7371: # ------------------------------------------------------------------ Plain Text
7372:
7373: sub plaintext {
7374: my ($short,$type,$cid,$forcedefault) = @_;
7375: if ($short =~ m{^cr/}) {
7376: return (split('/',$short))[-1];
7377: }
7378: if (!defined($cid)) {
7379: $cid = $env{'request.course.id'};
7380: }
7381: my %rolenames = (
7382: Course => 'std',
7383: Community => 'alt1',
7384: );
7385: if ($cid ne '') {
7386: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7387: unless ($forcedefault) {
7388: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7389: &Apache::lonlocal::mt_escape(\$roletext);
7390: return &Apache::lonlocal::mt($roletext);
7391: }
7392: }
7393: }
7394: if ((defined($type)) && (defined($rolenames{$type})) &&
7395: (defined($rolenames{$type})) &&
7396: (defined($prp{$short}{$rolenames{$type}}))) {
7397: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7398: } elsif ($cid ne '') {
7399: my $crstype = $env{'course.'.$cid.'.type'};
7400: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7401: (defined($prp{$short}{$rolenames{$crstype}}))) {
7402: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7403: }
7404: }
7405: return &Apache::lonlocal::mt($prp{$short}{'std'});
7406: }
7407:
7408: # ----------------------------------------------------------------- Assign Role
7409:
7410: sub assignrole {
7411: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7412: $context)=@_;
7413: my $mrole;
7414: if ($role =~ /^cr\//) {
7415: my $cwosec=$url;
7416: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7417: unless (&allowed('ccr',$cwosec)) {
7418: my $refused = 1;
7419: if ($context eq 'requestcourses') {
7420: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7421: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7422: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7423: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7424: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7425: if ($crsenv{'internal.courseowner'} eq
7426: $env{'user.name'}.':'.$env{'user.domain'}) {
7427: $refused = '';
7428: }
7429: }
7430: }
7431: }
7432: }
7433: if ($refused) {
7434: &logthis('Refused custom assignrole: '.
7435: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7436: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7437: return 'refused';
7438: }
7439: }
7440: $mrole='cr';
7441: } elsif ($role =~ /^gr\//) {
7442: my $cwogrp=$url;
7443: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7444: unless (&allowed('mdg',$cwogrp)) {
7445: &logthis('Refused group assignrole: '.
7446: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7447: $env{'user.name'}.' at '.$env{'user.domain'});
7448: return 'refused';
7449: }
7450: $mrole='gr';
7451: } else {
7452: my $cwosec=$url;
7453: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7454: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7455: my $refused;
7456: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7457: if (!(&allowed('c'.$role,$url))) {
7458: $refused = 1;
7459: }
7460: } else {
7461: $refused = 1;
7462: }
7463: if ($refused) {
7464: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7465: if (!$selfenroll && $context eq 'course') {
7466: my %crsenv;
7467: if ($role eq 'cc' || $role eq 'co') {
7468: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7469: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7470: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7471: if ($crsenv{'internal.courseowner'} eq
7472: $env{'user.name'}.':'.$env{'user.domain'}) {
7473: $refused = '';
7474: }
7475: }
7476: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7477: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7478: if ($crsenv{'internal.courseowner'} eq
7479: $env{'user.name'}.':'.$env{'user.domain'}) {
7480: $refused = '';
7481: }
7482: }
7483: }
7484: }
7485: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7486: $refused = '';
7487: } elsif ($context eq 'requestcourses') {
7488: my @possroles = ('st','ta','ep','in','cc','co');
7489: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7490: my $wrongcc;
7491: if ($cnum =~ /^$match_community$/) {
7492: $wrongcc = 1 if ($role eq 'cc');
7493: } else {
7494: $wrongcc = 1 if ($role eq 'co');
7495: }
7496: unless ($wrongcc) {
7497: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7498: if ($crsenv{'internal.courseowner'} eq
7499: $env{'user.name'}.':'.$env{'user.domain'}) {
7500: $refused = '';
7501: }
7502: }
7503: }
7504: }
7505: if ($refused) {
7506: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7507: ' '.$role.' '.$end.' '.$start.' by '.
7508: $env{'user.name'}.' at '.$env{'user.domain'});
7509: return 'refused';
7510: }
7511: }
7512: } elsif ($role eq 'au') {
7513: if ($url ne '/'.$udom.'/') {
7514: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7515: ' to assign author role for '.$uname.':'.$udom.
7516: ' in domain: '.$url.' refused (wrong domain).');
7517: return 'refused';
7518: }
7519: }
7520: $mrole=$role;
7521: }
7522: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7523: "$udom:$uname:$url".'_'."$mrole=$role";
7524: if ($end) { $command.='_'.$end; }
7525: if ($start) {
7526: if ($end) {
7527: $command.='_'.$start;
7528: } else {
7529: $command.='_0_'.$start;
7530: }
7531: }
7532: my $origstart = $start;
7533: my $origend = $end;
7534: my $delflag;
7535: # actually delete
7536: if ($deleteflag) {
7537: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7538: # modify command to delete the role
7539: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7540: "$udom:$uname:$url".'_'."$mrole";
7541: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7542: # set start and finish to negative values for userrolelog
7543: $start=-1;
7544: $end=-1;
7545: $delflag = 1;
7546: }
7547: }
7548: # send command
7549: my $answer=&reply($command,&homeserver($uname,$udom));
7550: # log new user role if status is ok
7551: if ($answer eq 'ok') {
7552: &userrolelog($role,$uname,$udom,$url,$start,$end);
7553: # for course roles, perform group memberships changes triggered by role change.
7554: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
7555: unless ($role =~ /^gr/) {
7556: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7557: $origstart,$selfenroll,$context);
7558: }
7559: if ($role eq 'cc') {
7560: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7561: }
7562: }
7563: return $answer;
7564: }
7565:
7566: sub autoupdate_coowners {
7567: my ($url,$end,$start,$uname,$udom) = @_;
7568: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7569: if (($cdom ne '') && ($cnum ne '')) {
7570: my $now = time;
7571: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7572: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7573: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7574: my $instcode = $coursehash{'internal.coursecode'};
7575: if ($instcode ne '') {
7576: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7577: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7578: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7579: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7580: if ($result eq 'valid') {
7581: if ($coursehash{'internal.co-owners'}) {
7582: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7583: push(@newcoowners,$coowner);
7584: }
7585: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7586: push(@newcoowners,$uname.':'.$udom);
7587: }
7588: @newcoowners = sort(@newcoowners);
7589: } else {
7590: push(@newcoowners,$uname.':'.$udom);
7591: }
7592: } else {
7593: if ($coursehash{'internal.co-owners'}) {
7594: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7595: unless ($coowner eq $uname.':'.$udom) {
7596: push(@newcoowners,$coowner);
7597: }
7598: }
7599: unless (@newcoowners > 0) {
7600: $delcoowners = 1;
7601: $coowners = '';
7602: }
7603: }
7604: }
7605: if (@newcoowners || $delcoowners) {
7606: &store_coowners($cdom,$cnum,$coursehash{'home'},
7607: $delcoowners,@newcoowners);
7608: }
7609: }
7610: }
7611: }
7612: }
7613: }
7614: }
7615:
7616: sub store_coowners {
7617: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
7618: my $cid = $cdom.'_'.$cnum;
7619: my ($coowners,$delresult,$putresult);
7620: if (@newcoowners) {
7621: $coowners = join(',',@newcoowners);
7622: my %coownershash = (
7623: 'internal.co-owners' => $coowners,
7624: );
7625: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
7626: if ($putresult eq 'ok') {
7627: if ($env{'course.'.$cid.'.num'} eq $cnum) {
7628: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
7629: }
7630: }
7631: }
7632: if ($delcoowners) {
7633: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
7634: if ($delresult eq 'ok') {
7635: if ($env{'course.'.$cid.'.internal.co-owners'}) {
7636: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
7637: }
7638: }
7639: }
7640: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
7641: my %crsinfo =
7642: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
7643: if (ref($crsinfo{$cid}) eq 'HASH') {
7644: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
7645: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
7646: }
7647: }
7648: }
7649:
7650: # -------------------------------------------------- Modify user authentication
7651: # Overrides without validation
7652:
7653: sub modifyuserauth {
7654: my ($udom,$uname,$umode,$upass)=@_;
7655: my $uhome=&homeserver($uname,$udom);
7656: unless (&allowed('mau',$udom)) { return 'refused'; }
7657: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
7658: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7659: ' in domain '.$env{'request.role.domain'});
7660: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7661: &escape($upass),$uhome);
7662: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7663: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7664: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7665: &log($udom,,$uname,$uhome,
7666: 'Authentication changed by '.$env{'user.domain'}.', '.
7667: $env{'user.name'}.', '.$umode.
7668: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7669: unless ($reply eq 'ok') {
7670: &logthis('Authentication mode error: '.$reply);
7671: return 'error: '.$reply;
7672: }
7673: return 'ok';
7674: }
7675:
7676: # --------------------------------------------------------------- Modify a user
7677:
7678: sub modifyuser {
7679: my ($udom, $uname, $uid,
7680: $umode, $upass, $first,
7681: $middle, $last, $gene,
7682: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7683: $udom= &LONCAPA::clean_domain($udom);
7684: $uname=&LONCAPA::clean_username($uname);
7685: my $showcandelete = 'none';
7686: if (ref($candelete) eq 'ARRAY') {
7687: if (@{$candelete} > 0) {
7688: $showcandelete = join(', ',@{$candelete});
7689: }
7690: }
7691: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7692: $umode.', '.$first.', '.$middle.', '.
7693: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7694: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7695: ' desiredhome not specified').
7696: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7697: ' in domain '.$env{'request.role.domain'});
7698: my $uhome=&homeserver($uname,$udom,'true');
7699: my $newuser;
7700: if ($uhome eq 'no_host') {
7701: $newuser = 1;
7702: }
7703: # ----------------------------------------------------------------- Create User
7704: if (($uhome eq 'no_host') &&
7705: (($umode && $upass) || ($umode eq 'localauth'))) {
7706: my $unhome='';
7707: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7708: $unhome = $desiredhome;
7709: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7710: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7711: } else { # load balancing routine for determining $unhome
7712: my $loadm=10000000;
7713: my %servers = &get_servers($udom,'library');
7714: foreach my $tryserver (keys(%servers)) {
7715: my $answer=reply('load',$tryserver);
7716: if (($answer=~/\d+/) && ($answer<$loadm)) {
7717: $loadm=$answer;
7718: $unhome=$tryserver;
7719: }
7720: }
7721: }
7722: if (($unhome eq '') || ($unhome eq 'no_host')) {
7723: return 'error: unable to find a home server for '.$uname.
7724: ' in domain '.$udom;
7725: }
7726: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7727: &escape($upass),$unhome);
7728: unless ($reply eq 'ok') {
7729: return 'error: '.$reply;
7730: }
7731: $uhome=&homeserver($uname,$udom,'true');
7732: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7733: return 'error: unable verify users home machine.';
7734: }
7735: } # End of creation of new user
7736: # ---------------------------------------------------------------------- Add ID
7737: if ($uid) {
7738: $uid=~tr/A-Z/a-z/;
7739: my %uidhash=&idrget($udom,$uname);
7740: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7741: && (!$forceid)) {
7742: unless ($uid eq $uidhash{$uname}) {
7743: return 'error: user id "'.$uid.'" does not match '.
7744: 'current user id "'.$uidhash{$uname}.'".';
7745: }
7746: } else {
7747: &idput($udom,($uname => $uid));
7748: }
7749: }
7750: # -------------------------------------------------------------- Add names, etc
7751: my @tmp=&get('environment',
7752: ['firstname','middlename','lastname','generation','id',
7753: 'permanentemail','inststatus'],
7754: $udom,$uname);
7755: my (%names,%oldnames);
7756: if ($tmp[0] =~ m/^error:.*/) {
7757: %names=();
7758: } else {
7759: %names = @tmp;
7760: %oldnames = %names;
7761: }
7762: #
7763: # If name, email and/or uid are blank (e.g., because an uploaded file
7764: # of users did not contain them), do not overwrite existing values
7765: # unless field is in $candelete array ref.
7766: #
7767:
7768: my @fields = ('firstname','middlename','lastname','generation',
7769: 'permanentemail','id');
7770: my %newvalues;
7771: if (ref($candelete) eq 'ARRAY') {
7772: foreach my $field (@fields) {
7773: if (grep(/^\Q$field\E$/,@{$candelete})) {
7774: if ($field eq 'firstname') {
7775: $names{$field} = $first;
7776: } elsif ($field eq 'middlename') {
7777: $names{$field} = $middle;
7778: } elsif ($field eq 'lastname') {
7779: $names{$field} = $last;
7780: } elsif ($field eq 'generation') {
7781: $names{$field} = $gene;
7782: } elsif ($field eq 'permanentemail') {
7783: $names{$field} = $email;
7784: } elsif ($field eq 'id') {
7785: $names{$field} = $uid;
7786: }
7787: }
7788: }
7789: }
7790: if ($first) { $names{'firstname'} = $first; }
7791: if (defined($middle)) { $names{'middlename'} = $middle; }
7792: if ($last) { $names{'lastname'} = $last; }
7793: if (defined($gene)) { $names{'generation'} = $gene; }
7794: if ($email) {
7795: $email=~s/[^\w\@\.\-\,]//gs;
7796: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
7797: }
7798: if ($uid) { $names{'id'} = $uid; }
7799: if (defined($inststatus)) {
7800: $names{'inststatus'} = '';
7801: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
7802: if (ref($usertypes) eq 'HASH') {
7803: my @okstatuses;
7804: foreach my $item (split(/:/,$inststatus)) {
7805: if (defined($usertypes->{$item})) {
7806: push(@okstatuses,$item);
7807: }
7808: }
7809: if (@okstatuses) {
7810: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
7811: }
7812: }
7813: }
7814: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7815: $umode.', '.$first.', '.$middle.', '.
7816: $last.', '.$gene.', '.$email.', '.$inststatus;
7817: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7818: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7819: } else {
7820: $logmsg .= ' during self creation';
7821: }
7822: my $changed;
7823: if ($newuser) {
7824: $changed = 1;
7825: } else {
7826: foreach my $field (@fields) {
7827: if ($names{$field} ne $oldnames{$field}) {
7828: $changed = 1;
7829: last;
7830: }
7831: }
7832: }
7833: unless ($changed) {
7834: $logmsg = 'No changes in user information needed for: '.$logmsg;
7835: &logthis($logmsg);
7836: return 'ok';
7837: }
7838: my $reply = &put('environment', \%names, $udom,$uname);
7839: if ($reply ne 'ok') {
7840: return 'error: '.$reply;
7841: }
7842: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7843: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7844: }
7845: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7846: &devalidate_cache_new('namescache',$uname.':'.$udom);
7847: $logmsg = 'Success modifying user '.$logmsg;
7848: &logthis($logmsg);
7849: return 'ok';
7850: }
7851:
7852: # -------------------------------------------------------------- Modify student
7853:
7854: sub modifystudent {
7855: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7856: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7857: $selfenroll,$context,$inststatus)=@_;
7858: if (!$cid) {
7859: unless ($cid=$env{'request.course.id'}) {
7860: return 'not_in_class';
7861: }
7862: }
7863: # --------------------------------------------------------------- Make the user
7864: my $reply=&modifyuser
7865: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7866: $desiredhome,$email,$inststatus);
7867: unless ($reply eq 'ok') { return $reply; }
7868: # This will cause &modify_student_enrollment to get the uid from the
7869: # students environment
7870: $uid = undef if (!$forceid);
7871: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7872: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7873: return $reply;
7874: }
7875:
7876: sub modify_student_enrollment {
7877: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7878: my ($cdom,$cnum,$chome);
7879: if (!$cid) {
7880: unless ($cid=$env{'request.course.id'}) {
7881: return 'not_in_class';
7882: }
7883: $cdom=$env{'course.'.$cid.'.domain'};
7884: $cnum=$env{'course.'.$cid.'.num'};
7885: } else {
7886: ($cdom,$cnum)=split(/_/,$cid);
7887: }
7888: $chome=$env{'course.'.$cid.'.home'};
7889: if (!$chome) {
7890: $chome=&homeserver($cnum,$cdom);
7891: }
7892: if (!$chome) { return 'unknown_course'; }
7893: # Make sure the user exists
7894: my $uhome=&homeserver($uname,$udom);
7895: if (($uhome eq '') || ($uhome eq 'no_host')) {
7896: return 'error: no such user';
7897: }
7898: # Get student data if we were not given enough information
7899: if (!defined($first) || $first eq '' ||
7900: !defined($last) || $last eq '' ||
7901: !defined($uid) || $uid eq '' ||
7902: !defined($middle) || $middle eq '' ||
7903: !defined($gene) || $gene eq '') {
7904: # They did not supply us with enough data to enroll the student, so
7905: # we need to pick up more information.
7906: my %tmp = &get('environment',
7907: ['firstname','middlename','lastname', 'generation','id']
7908: ,$udom,$uname);
7909:
7910: #foreach my $key (keys(%tmp)) {
7911: # &logthis("key $key = ".$tmp{$key});
7912: #}
7913: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7914: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7915: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7916: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7917: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7918: }
7919: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7920: my $user = "$uname:$udom";
7921: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
7922: my $reply=cput('classlist',
7923: {$user =>
7924: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7925: $cdom,$cnum);
7926: if (($reply eq 'ok') || ($reply eq 'delayed')) {
7927: &devalidate_getsection_cache($udom,$uname,$cid);
7928: } else {
7929: return 'error: '.$reply;
7930: }
7931: # Add student role to user
7932: my $uurl='/'.$cid;
7933: $uurl=~s/\_/\//g;
7934: if ($usec) {
7935: $uurl.='/'.$usec;
7936: }
7937: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
7938: $selfenroll,$context);
7939: if ($result ne 'ok') {
7940: if ($old_entry{$user} ne '') {
7941: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
7942: } else {
7943: $reply = &del('classlist',[$user],$cdom,$cnum);
7944: }
7945: }
7946: return $result;
7947: }
7948:
7949: sub format_name {
7950: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7951: my $name;
7952: if ($first ne 'lastname') {
7953: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7954: } else {
7955: if ($lastname=~/\S/) {
7956: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7957: $name=~s/\s+,/,/;
7958: } else {
7959: $name.= $firstname.' '.$middlename.' '.$generation;
7960: }
7961: }
7962: $name=~s/^\s+//;
7963: $name=~s/\s+$//;
7964: $name=~s/\s+/ /g;
7965: return $name;
7966: }
7967:
7968: # ------------------------------------------------- Write to course preferences
7969:
7970: sub writecoursepref {
7971: my ($courseid,%prefs)=@_;
7972: $courseid=~s/^\///;
7973: $courseid=~s/\_/\//g;
7974: my ($cdomain,$cnum)=split(/\//,$courseid);
7975: my $chome=homeserver($cnum,$cdomain);
7976: if (($chome eq '') || ($chome eq 'no_host')) {
7977: return 'error: no such course';
7978: }
7979: my $cstring='';
7980: foreach my $pref (keys(%prefs)) {
7981: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7982: }
7983: $cstring=~s/\&$//;
7984: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7985: }
7986:
7987: # ---------------------------------------------------------- Make/modify course
7988:
7989: sub createcourse {
7990: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7991: $course_owner,$crstype,$cnum,$context,$category)=@_;
7992: $url=&declutter($url);
7993: my $cid='';
7994: if ($context eq 'requestcourses') {
7995: my $can_create = 0;
7996: my ($ownername,$ownerdom) = split(':',$course_owner);
7997: if ($udom eq $ownerdom) {
7998: if (&usertools_access($ownername,$ownerdom,$category,undef,
7999: $context)) {
8000: $can_create = 1;
8001: }
8002: } else {
8003: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8004: $category);
8005: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8006: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8007: if (@curr > 0) {
8008: my @options = qw(approval validate autolimit);
8009: my $optregex = join('|',@options);
8010: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8011: $can_create = 1;
8012: }
8013: }
8014: }
8015: }
8016: if ($can_create) {
8017: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8018: unless (&allowed('ccc',$udom)) {
8019: return 'refused';
8020: }
8021: }
8022: } else {
8023: return 'refused';
8024: }
8025: } elsif (!&allowed('ccc',$udom)) {
8026: return 'refused';
8027: }
8028: # --------------------------------------------------------------- Get Unique ID
8029: my $uname;
8030: if ($cnum =~ /^$match_courseid$/) {
8031: my $chome=&homeserver($cnum,$udom,'true');
8032: if (($chome eq '') || ($chome eq 'no_host')) {
8033: $uname = $cnum;
8034: } else {
8035: $uname = &generate_coursenum($udom,$crstype);
8036: }
8037: } else {
8038: $uname = &generate_coursenum($udom,$crstype);
8039: }
8040: return $uname if ($uname =~ /^error/);
8041: # -------------------------------------------------- Check supplied server name
8042: if (!defined($course_server)) {
8043: if (defined(&domain($udom,'primary'))) {
8044: $course_server = &domain($udom,'primary');
8045: } else {
8046: $course_server = $env{'user.home'};
8047: }
8048: }
8049: my %host_servers =
8050: &Apache::lonnet::get_servers($udom,'library');
8051: unless ($host_servers{$course_server}) {
8052: return 'error: invalid home server for course: '.$course_server;
8053: }
8054: # ------------------------------------------------------------- Make the course
8055: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8056: $course_server);
8057: unless ($reply eq 'ok') { return 'error: '.$reply; }
8058: my $uhome=&homeserver($uname,$udom,'true');
8059: if (($uhome eq '') || ($uhome eq 'no_host')) {
8060: return 'error: no such course';
8061: }
8062: # ----------------------------------------------------------------- Course made
8063: # log existence
8064: my $now = time;
8065: my $newcourse = {
8066: $udom.'_'.$uname => {
8067: description => $description,
8068: inst_code => $inst_code,
8069: owner => $course_owner,
8070: type => $crstype,
8071: creator => $env{'user.name'}.':'.
8072: $env{'user.domain'},
8073: created => $now,
8074: context => $context,
8075: },
8076: };
8077: &courseidput($udom,$newcourse,$uhome,'notime');
8078: # set toplevel url
8079: my $topurl=$url;
8080: unless ($nonstandard) {
8081: # ------------------------------------------ For standard courses, make top url
8082: my $mapurl=&clutter($url);
8083: if ($mapurl eq '/res/') { $mapurl=''; }
8084: $env{'form.initmap'}=(<<ENDINITMAP);
8085: <map>
8086: <resource id="1" type="start"></resource>
8087: <resource id="2" src="$mapurl"></resource>
8088: <resource id="3" type="finish"></resource>
8089: <link index="1" from="1" to="2"></link>
8090: <link index="2" from="2" to="3"></link>
8091: </map>
8092: ENDINITMAP
8093: $topurl=&declutter(
8094: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8095: );
8096: }
8097: # ----------------------------------------------------------- Write preferences
8098: &writecoursepref($udom.'_'.$uname,
8099: ('description' => $description,
8100: 'url' => $topurl,
8101: 'internal.creator' => $env{'user.name'}.':'.
8102: $env{'user.domain'},
8103: 'internal.created' => $now,
8104: 'internal.creationcontext' => $context)
8105: );
8106: return '/'.$udom.'/'.$uname;
8107: }
8108:
8109: # ------------------------------------------------------------------- Create ID
8110: sub generate_coursenum {
8111: my ($udom,$crstype) = @_;
8112: my $domdesc = &domain($udom);
8113: return 'error: invalid domain' if ($domdesc eq '');
8114: my $first;
8115: if ($crstype eq 'Community') {
8116: $first = '0';
8117: } else {
8118: $first = int(1+rand(9));
8119: }
8120: my $uname=$first.
8121: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8122: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8123: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8124: # ----------------------------------------------- Make sure that does not exist
8125: my $uhome=&homeserver($uname,$udom,'true');
8126: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8127: if ($crstype eq 'Community') {
8128: $first = '0';
8129: } else {
8130: $first = int(1+rand(9));
8131: }
8132: $uname=$first.
8133: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8134: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8135: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8136: $uhome=&homeserver($uname,$udom,'true');
8137: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8138: return 'error: unable to generate unique course-ID';
8139: }
8140: }
8141: return $uname;
8142: }
8143:
8144: sub is_course {
8145: my ($cdom, $cnum) = scalar(@_) == 1 ?
8146: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8147:
8148: return unless $cdom and $cnum;
8149:
8150: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8151: '.');
8152:
8153: return unless exists($courses{$cdom.'_'.$cnum});
8154: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8155: }
8156:
8157: sub store_userdata {
8158: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8159: my $result;
8160: if ($datakey ne '') {
8161: if (ref($storehash) eq 'HASH') {
8162: if ($udom eq '' || $uname eq '') {
8163: $udom = $env{'user.domain'};
8164: $uname = $env{'user.name'};
8165: }
8166: my $uhome=&homeserver($uname,$udom);
8167: if (($uhome eq '') || ($uhome eq 'no_host')) {
8168: $result = 'error: no_host';
8169: } else {
8170: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8171: $storehash->{'host'} = $perlvar{'lonHostID'};
8172:
8173: my $namevalue='';
8174: foreach my $key (keys(%{$storehash})) {
8175: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8176: }
8177: $namevalue=~s/\&$//;
8178: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8179: $namevalue,$uhome);
8180: }
8181: } else {
8182: $result = 'error: data to store was not a hash reference';
8183: }
8184: } else {
8185: $result= 'error: invalid requestkey';
8186: }
8187: return $result;
8188: }
8189:
8190: # ---------------------------------------------------------- Assign Custom Role
8191:
8192: sub assigncustomrole {
8193: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8194: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8195: $end,$start,$deleteflag,$selfenroll,$context);
8196: }
8197:
8198: # ----------------------------------------------------------------- Revoke Role
8199:
8200: sub revokerole {
8201: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8202: my $now=time;
8203: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8204: }
8205:
8206: # ---------------------------------------------------------- Revoke Custom Role
8207:
8208: sub revokecustomrole {
8209: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8210: my $now=time;
8211: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8212: $deleteflag,$selfenroll,$context);
8213: }
8214:
8215: # ------------------------------------------------------------ Disk usage
8216: sub diskusage {
8217: my ($udom,$uname,$directorypath,$getpropath)=@_;
8218: $directorypath =~ s/\/$//;
8219: my $listing=&reply('du2:'.&escape($directorypath).':'
8220: .&escape($getpropath).':'.&escape($uname).':'
8221: .&escape($udom),homeserver($uname,$udom));
8222: if ($listing eq 'unknown_cmd') {
8223: if ($getpropath) {
8224: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8225: }
8226: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8227: }
8228: return $listing;
8229: }
8230:
8231: sub is_locked {
8232: my ($file_name, $domain, $user, $which) = @_;
8233: my @check;
8234: my $is_locked;
8235: push (@check,$file_name);
8236: my %locked = &get('file_permissions',\@check,
8237: $env{'user.domain'},$env{'user.name'});
8238: my ($tmp)=keys(%locked);
8239: if ($tmp=~/^error:/) { undef(%locked); }
8240:
8241: if (ref($locked{$file_name}) eq 'ARRAY') {
8242: $is_locked = 'false';
8243: foreach my $entry (@{$locked{$file_name}}) {
8244: if (ref($entry) eq 'ARRAY') {
8245: $is_locked = 'true';
8246: if (ref($which) eq 'ARRAY') {
8247: push(@{$which},$entry);
8248: } else {
8249: last;
8250: }
8251: }
8252: }
8253: } else {
8254: $is_locked = 'false';
8255: }
8256: return $is_locked;
8257: }
8258:
8259: sub declutter_portfile {
8260: my ($file) = @_;
8261: $file =~ s{^(/portfolio/|portfolio/)}{/};
8262: return $file;
8263: }
8264:
8265: # ------------------------------------------------------------- Mark as Read Only
8266:
8267: sub mark_as_readonly {
8268: my ($domain,$user,$files,$what) = @_;
8269: my %current_permissions = &dump('file_permissions',$domain,$user);
8270: my ($tmp)=keys(%current_permissions);
8271: if ($tmp=~/^error:/) { undef(%current_permissions); }
8272: foreach my $file (@{$files}) {
8273: $file = &declutter_portfile($file);
8274: push(@{$current_permissions{$file}},$what);
8275: }
8276: &put('file_permissions',\%current_permissions,$domain,$user);
8277: return;
8278: }
8279:
8280: # ------------------------------------------------------------Save Selected Files
8281:
8282: sub save_selected_files {
8283: my ($user, $path, @files) = @_;
8284: my $filename = $user."savedfiles";
8285: my @other_files = &files_not_in_path($user, $path);
8286: open (OUT, '>'.$tmpdir.$filename);
8287: foreach my $file (@files) {
8288: print (OUT $env{'form.currentpath'}.$file."\n");
8289: }
8290: foreach my $file (@other_files) {
8291: print (OUT $file."\n");
8292: }
8293: close (OUT);
8294: return 'ok';
8295: }
8296:
8297: sub clear_selected_files {
8298: my ($user) = @_;
8299: my $filename = $user."savedfiles";
8300: open (OUT, '>'.LONCAPA::tempdir().$filename);
8301: print (OUT undef);
8302: close (OUT);
8303: return ("ok");
8304: }
8305:
8306: sub files_in_path {
8307: my ($user, $path) = @_;
8308: my $filename = $user."savedfiles";
8309: my %return_files;
8310: open (IN, '<'.LONCAPA::tempdir().$filename);
8311: while (my $line_in = <IN>) {
8312: chomp ($line_in);
8313: my @paths_and_file = split (m!/!, $line_in);
8314: my $file_part = pop (@paths_and_file);
8315: my $path_part = join ('/', @paths_and_file);
8316: $path_part.='/';
8317: my $path_and_file = $path_part.$file_part;
8318: if ($path_part eq $path) {
8319: $return_files{$file_part}= 'selected';
8320: }
8321: }
8322: close (IN);
8323: return (\%return_files);
8324: }
8325:
8326: # called in portfolio select mode, to show files selected NOT in current directory
8327: sub files_not_in_path {
8328: my ($user, $path) = @_;
8329: my $filename = $user."savedfiles";
8330: my @return_files;
8331: my $path_part;
8332: open(IN, '<'.LONCAPA::.$filename);
8333: while (my $line = <IN>) {
8334: #ok, I know it's clunky, but I want it to work
8335: my @paths_and_file = split(m|/|, $line);
8336: my $file_part = pop(@paths_and_file);
8337: chomp($file_part);
8338: my $path_part = join('/', @paths_and_file);
8339: $path_part .= '/';
8340: my $path_and_file = $path_part.$file_part;
8341: if ($path_part ne $path) {
8342: push(@return_files, ($path_and_file));
8343: }
8344: }
8345: close(OUT);
8346: return (@return_files);
8347: }
8348:
8349: #----------------------------------------------Get portfolio file permissions
8350:
8351: sub get_portfile_permissions {
8352: my ($domain,$user) = @_;
8353: my %current_permissions = &dump('file_permissions',$domain,$user);
8354: my ($tmp)=keys(%current_permissions);
8355: if ($tmp=~/^error:/) { undef(%current_permissions); }
8356: return \%current_permissions;
8357: }
8358:
8359: #---------------------------------------------Get portfolio file access controls
8360:
8361: sub get_access_controls {
8362: my ($current_permissions,$group,$file) = @_;
8363: my %access;
8364: my $real_file = $file;
8365: $file =~ s/\.meta$//;
8366: if (defined($file)) {
8367: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8368: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8369: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8370: }
8371: }
8372: } else {
8373: foreach my $key (keys(%{$current_permissions})) {
8374: if ($key =~ /\0accesscontrol$/) {
8375: if (defined($group)) {
8376: if ($key !~ m-^\Q$group\E/-) {
8377: next;
8378: }
8379: }
8380: my ($fullpath) = split(/\0/,$key);
8381: if (ref($$current_permissions{$key}) eq 'HASH') {
8382: foreach my $control (keys(%{$$current_permissions{$key}})) {
8383: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8384: }
8385: }
8386: }
8387: }
8388: }
8389: return %access;
8390: }
8391:
8392: sub modify_access_controls {
8393: my ($file_name,$changes,$domain,$user)=@_;
8394: my ($outcome,$deloutcome);
8395: my %store_permissions;
8396: my %new_values;
8397: my %new_control;
8398: my %translation;
8399: my @deletions = ();
8400: my $now = time;
8401: if (exists($$changes{'activate'})) {
8402: if (ref($$changes{'activate'}) eq 'HASH') {
8403: my @newitems = sort(keys(%{$$changes{'activate'}}));
8404: my $numnew = scalar(@newitems);
8405: for (my $i=0; $i<$numnew; $i++) {
8406: my $newkey = $newitems[$i];
8407: my $newid = &Apache::loncommon::get_cgi_id();
8408: if ($newkey =~ /^\d+:/) {
8409: $newkey =~ s/^(\d+)/$newid/;
8410: $translation{$1} = $newid;
8411: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8412: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8413: $translation{$1} = $newid;
8414: }
8415: $new_values{$file_name."\0".$newkey} =
8416: $$changes{'activate'}{$newitems[$i]};
8417: $new_control{$newkey} = $now;
8418: }
8419: }
8420: }
8421: my %todelete;
8422: my %changed_items;
8423: foreach my $action ('delete','update') {
8424: if (exists($$changes{$action})) {
8425: if (ref($$changes{$action}) eq 'HASH') {
8426: foreach my $key (keys(%{$$changes{$action}})) {
8427: my ($itemnum) = ($key =~ /^([^:]+):/);
8428: if ($action eq 'delete') {
8429: $todelete{$itemnum} = 1;
8430: } else {
8431: $changed_items{$itemnum} = $key;
8432: }
8433: }
8434: }
8435: }
8436: }
8437: # get lock on access controls for file.
8438: my $lockhash = {
8439: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8440: ':'.$env{'user.domain'},
8441: };
8442: my $tries = 0;
8443: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8444:
8445: while (($gotlock ne 'ok') && $tries <3) {
8446: $tries ++;
8447: sleep 1;
8448: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8449: }
8450: if ($gotlock eq 'ok') {
8451: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8452: my ($tmp)=keys(%curr_permissions);
8453: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8454: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8455: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8456: if (ref($curr_controls) eq 'HASH') {
8457: foreach my $control_item (keys(%{$curr_controls})) {
8458: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8459: if (defined($todelete{$itemnum})) {
8460: push(@deletions,$file_name."\0".$control_item);
8461: } else {
8462: if (defined($changed_items{$itemnum})) {
8463: $new_control{$changed_items{$itemnum}} = $now;
8464: push(@deletions,$file_name."\0".$control_item);
8465: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8466: } else {
8467: $new_control{$control_item} = $$curr_controls{$control_item};
8468: }
8469: }
8470: }
8471: }
8472: }
8473: my ($group);
8474: if (&is_course($domain,$user)) {
8475: ($group,my $file) = split(/\//,$file_name,2);
8476: }
8477: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8478: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8479: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8480: # remove lock
8481: my @del_lock = ($file_name."\0".'locked_access_records');
8482: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8483: my $sqlresult =
8484: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8485: $group);
8486: } else {
8487: $outcome = "error: could not obtain lockfile\n";
8488: }
8489: return ($outcome,$deloutcome,\%new_values,\%translation);
8490: }
8491:
8492: sub make_public_indefinitely {
8493: my ($requrl) = @_;
8494: my $now = time;
8495: my $action = 'activate';
8496: my $aclnum = 0;
8497: if (&is_portfolio_url($requrl)) {
8498: my (undef,$udom,$unum,$file_name,$group) =
8499: &parse_portfolio_url($requrl);
8500: my $current_perms = &get_portfile_permissions($udom,$unum);
8501: my %access_controls = &get_access_controls($current_perms,
8502: $group,$file_name);
8503: foreach my $key (keys(%{$access_controls{$file_name}})) {
8504: my ($num,$scope,$end,$start) =
8505: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8506: if ($scope eq 'public') {
8507: if ($start <= $now && $end == 0) {
8508: $action = 'none';
8509: } else {
8510: $action = 'update';
8511: $aclnum = $num;
8512: }
8513: last;
8514: }
8515: }
8516: if ($action eq 'none') {
8517: return 'ok';
8518: } else {
8519: my %changes;
8520: my $newend = 0;
8521: my $newstart = $now;
8522: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8523: $changes{$action}{$newkey} = {
8524: type => 'public',
8525: time => {
8526: start => $newstart,
8527: end => $newend,
8528: },
8529: };
8530: my ($outcome,$deloutcome,$new_values,$translation) =
8531: &modify_access_controls($file_name,\%changes,$udom,$unum);
8532: return $outcome;
8533: }
8534: } else {
8535: return 'invalid';
8536: }
8537: }
8538:
8539: #------------------------------------------------------Get Marked as Read Only
8540:
8541: sub get_marked_as_readonly {
8542: my ($domain,$user,$what,$group) = @_;
8543: my $current_permissions = &get_portfile_permissions($domain,$user);
8544: my @readonly_files;
8545: my $cmp1=$what;
8546: if (ref($what)) { $cmp1=join('',@{$what}) };
8547: while (my ($file_name,$value) = each(%{$current_permissions})) {
8548: if (defined($group)) {
8549: if ($file_name !~ m-^\Q$group\E/-) {
8550: next;
8551: }
8552: }
8553: if (ref($value) eq "ARRAY"){
8554: foreach my $stored_what (@{$value}) {
8555: my $cmp2=$stored_what;
8556: if (ref($stored_what) eq 'ARRAY') {
8557: $cmp2=join('',@{$stored_what});
8558: }
8559: if ($cmp1 eq $cmp2) {
8560: push(@readonly_files, $file_name);
8561: last;
8562: } elsif (!defined($what)) {
8563: push(@readonly_files, $file_name);
8564: last;
8565: }
8566: }
8567: }
8568: }
8569: return @readonly_files;
8570: }
8571: #-----------------------------------------------------------Get Marked as Read Only Hash
8572:
8573: sub get_marked_as_readonly_hash {
8574: my ($current_permissions,$group,$what) = @_;
8575: my %readonly_files;
8576: while (my ($file_name,$value) = each(%{$current_permissions})) {
8577: if (defined($group)) {
8578: if ($file_name !~ m-^\Q$group\E/-) {
8579: next;
8580: }
8581: }
8582: if (ref($value) eq "ARRAY"){
8583: foreach my $stored_what (@{$value}) {
8584: if (ref($stored_what) eq 'ARRAY') {
8585: foreach my $lock_descriptor(@{$stored_what}) {
8586: if ($lock_descriptor eq 'graded') {
8587: $readonly_files{$file_name} = 'graded';
8588: } elsif ($lock_descriptor eq 'handback') {
8589: $readonly_files{$file_name} = 'handback';
8590: } else {
8591: if (!exists($readonly_files{$file_name})) {
8592: $readonly_files{$file_name} = 'locked';
8593: }
8594: }
8595: }
8596: }
8597: }
8598: }
8599: }
8600: return %readonly_files;
8601: }
8602: # ------------------------------------------------------------ Unmark as Read Only
8603:
8604: sub unmark_as_readonly {
8605: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8606: # for portfolio submissions, $what contains [$symb,$crsid]
8607: my ($domain,$user,$what,$file_name,$group) = @_;
8608: $file_name = &declutter_portfile($file_name);
8609: my $symb_crs = $what;
8610: if (ref($what)) { $symb_crs=join('',@$what); }
8611: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
8612: my ($tmp)=keys(%current_permissions);
8613: if ($tmp=~/^error:/) { undef(%current_permissions); }
8614: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
8615: foreach my $file (@readonly_files) {
8616: my $clean_file = &declutter_portfile($file);
8617: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
8618: my $current_locks = $current_permissions{$file};
8619: my @new_locks;
8620: my @del_keys;
8621: if (ref($current_locks) eq "ARRAY"){
8622: foreach my $locker (@{$current_locks}) {
8623: my $compare=$locker;
8624: if (ref($locker) eq 'ARRAY') {
8625: $compare=join('',@{$locker});
8626: if ($compare ne $symb_crs) {
8627: push(@new_locks, $locker);
8628: }
8629: }
8630: }
8631: if (scalar(@new_locks) > 0) {
8632: $current_permissions{$file} = \@new_locks;
8633: } else {
8634: push(@del_keys, $file);
8635: &del('file_permissions',\@del_keys, $domain, $user);
8636: delete($current_permissions{$file});
8637: }
8638: }
8639: }
8640: &put('file_permissions',\%current_permissions,$domain,$user);
8641: return;
8642: }
8643:
8644: # ------------------------------------------------------------ Directory lister
8645:
8646: sub dirlist {
8647: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
8648: $uri=~s/^\///;
8649: $uri=~s/\/$//;
8650: my ($udom, $uname);
8651: if ($getuserdir) {
8652: $udom = $userdomain;
8653: $uname = $username;
8654: } else {
8655: (undef,$udom,$uname)=split(/\//,$uri);
8656: if(defined($userdomain)) {
8657: $udom = $userdomain;
8658: }
8659: if(defined($username)) {
8660: $uname = $username;
8661: }
8662: }
8663: my ($dirRoot,$listing,@listing_results);
8664:
8665: $dirRoot = $perlvar{'lonDocRoot'};
8666: if (defined($getpropath)) {
8667: $dirRoot = &propath($udom,$uname);
8668: $dirRoot =~ s/\/$//;
8669: } elsif (defined($getuserdir)) {
8670: my $subdir=$uname.'__';
8671: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
8672: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8673: ."/$udom/$subdir/$uname";
8674: } elsif (defined($alternateRoot)) {
8675: $dirRoot = $alternateRoot;
8676: }
8677:
8678: if($udom) {
8679: if($uname) {
8680: my $uhome = &homeserver($uname,$udom);
8681: if ($uhome eq 'no_host') {
8682: return ([],'no_host');
8683: }
8684: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8685: .$getuserdir.':'.&escape($dirRoot)
8686: .':'.&escape($uname).':'.&escape($udom),$uhome);
8687: if ($listing eq 'unknown_cmd') {
8688: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
8689: } else {
8690: @listing_results = map { &unescape($_); } split(/:/,$listing);
8691: }
8692: if ($listing eq 'unknown_cmd') {
8693: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
8694: @listing_results = split(/:/,$listing);
8695: } else {
8696: @listing_results = map { &unescape($_); } split(/:/,$listing);
8697: }
8698: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8699: ($listing eq 'rejected') || ($listing eq 'refused') ||
8700: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8701: return ([],$listing);
8702: } else {
8703: return (\@listing_results);
8704: }
8705: } elsif(!$alternateRoot) {
8706: my (%allusers,%listerror);
8707: my %servers = &get_servers($udom,'library');
8708: foreach my $tryserver (keys(%servers)) {
8709: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8710: &escape($udom),$tryserver);
8711: if ($listing eq 'unknown_cmd') {
8712: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8713: $udom, $tryserver);
8714: } else {
8715: @listing_results = map { &unescape($_); } split(/:/,$listing);
8716: }
8717: if ($listing eq 'unknown_cmd') {
8718: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8719: $udom, $tryserver);
8720: @listing_results = split(/:/,$listing);
8721: } else {
8722: @listing_results =
8723: map { &unescape($_); } split(/:/,$listing);
8724: }
8725: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8726: ($listing eq 'rejected') || ($listing eq 'refused') ||
8727: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8728: $listerror{$tryserver} = $listing;
8729: } else {
8730: foreach my $line (@listing_results) {
8731: my ($entry) = split(/&/,$line,2);
8732: $allusers{$entry} = 1;
8733: }
8734: }
8735: }
8736: my @alluserslist=();
8737: foreach my $user (sort(keys(%allusers))) {
8738: push(@alluserslist,$user.'&user');
8739: }
8740: return (\@alluserslist);
8741: } else {
8742: return ([],'missing username');
8743: }
8744: } elsif(!defined($getpropath)) {
8745: my $path = $perlvar{'lonDocRoot'}.'/res/';
8746: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
8747: return (\@all_domains);
8748: } else {
8749: return ([],'missing domain');
8750: }
8751: }
8752:
8753: # --------------------------------------------- GetFileTimestamp
8754: # This function utilizes dirlist and returns the date stamp for
8755: # when it was last modified. It will also return an error of -1
8756: # if an error occurs
8757:
8758: sub GetFileTimestamp {
8759: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
8760: $studentDomain = &LONCAPA::clean_domain($studentDomain);
8761: $studentName = &LONCAPA::clean_username($studentName);
8762: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
8763: undef,$getuserdir);
8764: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8765: return -1;
8766: }
8767: if (ref($fileref) eq 'ARRAY') {
8768: my @stats = split('&',$fileref->[0]);
8769: # @stats contains first the filename, then the stat output
8770: return $stats[10]; # so this is 10 instead of 9.
8771: } else {
8772: return -1;
8773: }
8774: }
8775:
8776: sub stat_file {
8777: my ($uri) = @_;
8778: $uri = &clutter_with_no_wrapper($uri);
8779:
8780: my ($udom,$uname,$file);
8781: if ($uri =~ m-^/(uploaded|editupload)/-) {
8782: ($udom,$uname,$file) =
8783: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
8784: $file = 'userfiles/'.$file;
8785: }
8786: if ($uri =~ m-^/res/-) {
8787: ($udom,$uname) =
8788: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
8789: $file = $uri;
8790: }
8791:
8792: if (!$udom || !$uname || !$file) {
8793: # unable to handle the uri
8794: return ();
8795: }
8796: my $getpropath;
8797: if ($file =~ /^userfiles\//) {
8798: $getpropath = 1;
8799: }
8800: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
8801: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8802: return ();
8803: } else {
8804: if (ref($listref) eq 'ARRAY') {
8805: my @stats = split('&',$listref->[0]);
8806: shift(@stats); #filename is first
8807: return @stats;
8808: }
8809: }
8810: return ();
8811: }
8812:
8813: # -------------------------------------------------------- Value of a Condition
8814:
8815: # gets the value of a specific preevaluated condition
8816: # stored in the string $env{user.state.<cid>}
8817: # or looks up a condition reference in the bighash and if if hasn't
8818: # already been evaluated recurses into docondval to get the value of
8819: # the condition, then memoizing it to
8820: # $env{user.state.<cid>.<condition>}
8821: sub directcondval {
8822: my $number=shift;
8823: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
8824: &Apache::lonuserstate::evalstate();
8825: }
8826: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
8827: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
8828: } elsif ($number =~ /^_/) {
8829: my $sub_condition;
8830: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8831: &GDBM_READER(),0640)) {
8832: $sub_condition=$bighash{'conditions'.$number};
8833: untie(%bighash);
8834: }
8835: my $value = &docondval($sub_condition);
8836: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
8837: return $value;
8838: }
8839: if ($env{'user.state.'.$env{'request.course.id'}}) {
8840: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8841: } else {
8842: return 2;
8843: }
8844: }
8845:
8846: # get the collection of conditions for this resource
8847: sub condval {
8848: my $condidx=shift;
8849: my $allpathcond='';
8850: foreach my $cond (split(/\|/,$condidx)) {
8851: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8852: $allpathcond.=
8853: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8854: }
8855: }
8856: $allpathcond=~s/\|$//;
8857: return &docondval($allpathcond);
8858: }
8859:
8860: #evaluates an expression of conditions
8861: sub docondval {
8862: my ($allpathcond) = @_;
8863: my $result=0;
8864: if ($env{'request.course.id'}
8865: && defined($allpathcond)) {
8866: my $operand='|';
8867: my @stack;
8868: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8869: if ($chunk eq '(') {
8870: push @stack,($operand,$result);
8871: } elsif ($chunk eq ')') {
8872: my $before=pop @stack;
8873: if (pop @stack eq '&') {
8874: $result=$result>$before?$before:$result;
8875: } else {
8876: $result=$result>$before?$result:$before;
8877: }
8878: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8879: $operand=$chunk;
8880: } else {
8881: my $new=directcondval($chunk);
8882: if ($operand eq '&') {
8883: $result=$result>$new?$new:$result;
8884: } else {
8885: $result=$result>$new?$result:$new;
8886: }
8887: }
8888: }
8889: }
8890: return $result;
8891: }
8892:
8893: # ---------------------------------------------------- Devalidate courseresdata
8894:
8895: sub devalidatecourseresdata {
8896: my ($coursenum,$coursedomain)=@_;
8897: my $hashid=$coursenum.':'.$coursedomain;
8898: &devalidate_cache_new('courseres',$hashid);
8899: }
8900:
8901:
8902: # --------------------------------------------------- Course Resourcedata Query
8903: #
8904: # Parameters:
8905: # $coursenum - Number of the course.
8906: # $coursedomain - Domain at which the course was created.
8907: # Returns:
8908: # A hash of the course parameters along (I think) with timestamps
8909: # and version info.
8910:
8911: sub get_courseresdata {
8912: my ($coursenum,$coursedomain)=@_;
8913: my $coursehom=&homeserver($coursenum,$coursedomain);
8914: my $hashid=$coursenum.':'.$coursedomain;
8915: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8916: my %dumpreply;
8917: unless (defined($cached)) {
8918: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8919: $result=\%dumpreply;
8920: my ($tmp) = keys(%dumpreply);
8921: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8922: &do_cache_new('courseres',$hashid,$result,600);
8923: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8924: return $tmp;
8925: } elsif ($tmp =~ /^(error)/) {
8926: $result=undef;
8927: &do_cache_new('courseres',$hashid,$result,600);
8928: }
8929: }
8930: return $result;
8931: }
8932:
8933: sub devalidateuserresdata {
8934: my ($uname,$udom)=@_;
8935: my $hashid="$udom:$uname";
8936: &devalidate_cache_new('userres',$hashid);
8937: }
8938:
8939: sub get_userresdata {
8940: my ($uname,$udom)=@_;
8941: #most student don\'t have any data set, check if there is some data
8942: if (&EXT_cache_status($udom,$uname)) { return undef; }
8943:
8944: my $hashid="$udom:$uname";
8945: my ($result,$cached)=&is_cached_new('userres',$hashid);
8946: if (!defined($cached)) {
8947: my %resourcedata=&dump('resourcedata',$udom,$uname);
8948: $result=\%resourcedata;
8949: &do_cache_new('userres',$hashid,$result,600);
8950: }
8951: my ($tmp)=keys(%$result);
8952: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8953: return $result;
8954: }
8955: #error 2 occurs when the .db doesn't exist
8956: if ($tmp!~/error: 2 /) {
8957: &logthis("<font color=\"blue\">WARNING:".
8958: " Trying to get resource data for ".
8959: $uname." at ".$udom.": ".
8960: $tmp."</font>");
8961: } elsif ($tmp=~/error: 2 /) {
8962: #&EXT_cache_set($udom,$uname);
8963: &do_cache_new('userres',$hashid,undef,600);
8964: undef($tmp); # not really an error so don't send it back
8965: }
8966: return $tmp;
8967: }
8968: #----------------------------------------------- resdata - return resource data
8969: # Purpose:
8970: # Return resource data for either users or for a course.
8971: # Parameters:
8972: # $name - Course/user name.
8973: # $domain - Name of the domain the user/course is registered on.
8974: # $type - Type of thing $name is (must be 'course' or 'user'
8975: # @which - Array of names of resources desired.
8976: # Returns:
8977: # The value of the first reasource in @which that is found in the
8978: # resource hash.
8979: # Exceptional Conditions:
8980: # If the $type passed in is not valid (not the string 'course' or
8981: # 'user', an undefined reference is returned.
8982: # If none of the resources are found, an undef is returned
8983: sub resdata {
8984: my ($name,$domain,$type,@which)=@_;
8985: my $result;
8986: if ($type eq 'course') {
8987: $result=&get_courseresdata($name,$domain);
8988: } elsif ($type eq 'user') {
8989: $result=&get_userresdata($name,$domain);
8990: }
8991: if (!ref($result)) { return $result; }
8992: foreach my $item (@which) {
8993: if (defined($result->{$item->[0]})) {
8994: return [$result->{$item->[0]},$item->[1]];
8995: }
8996: }
8997: return undef;
8998: }
8999:
9000: #
9001: # EXT resource caching routines
9002: #
9003:
9004: sub clear_EXT_cache_status {
9005: &delenv('cache.EXT.');
9006: }
9007:
9008: sub EXT_cache_status {
9009: my ($target_domain,$target_user) = @_;
9010: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9011: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9012: # We know already the user has no data
9013: return 1;
9014: } else {
9015: return 0;
9016: }
9017: }
9018:
9019: sub EXT_cache_set {
9020: my ($target_domain,$target_user) = @_;
9021: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9022: #&appenv({$cachename => time});
9023: }
9024:
9025: # --------------------------------------------------------- Value of a Variable
9026: sub EXT {
9027:
9028: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9029: unless ($varname) { return ''; }
9030: #get real user name/domain, courseid and symb
9031: my $courseid;
9032: my $publicuser;
9033: if ($symbparm) {
9034: $symbparm=&get_symb_from_alias($symbparm);
9035: }
9036: if (!($uname && $udom)) {
9037: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9038: if (!$symbparm) { $symbparm=$cursymb; }
9039: } else {
9040: $courseid=$env{'request.course.id'};
9041: }
9042: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9043: my $rest;
9044: if (defined($therest[0])) {
9045: $rest=join('.',@therest);
9046: } else {
9047: $rest='';
9048: }
9049:
9050: my $qualifierrest=$qualifier;
9051: if ($rest) { $qualifierrest.='.'.$rest; }
9052: my $spacequalifierrest=$space;
9053: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9054: if ($realm eq 'user') {
9055: # --------------------------------------------------------------- user.resource
9056: if ($space eq 'resource') {
9057: if ( (defined($Apache::lonhomework::parsing_a_problem)
9058: || defined($Apache::lonhomework::parsing_a_task))
9059: &&
9060: ($symbparm eq &symbread()) ) {
9061: # if we are in the middle of processing the resource the
9062: # get the value we are planning on committing
9063: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9064: return $Apache::lonhomework::results{$qualifierrest};
9065: } else {
9066: return $Apache::lonhomework::history{$qualifierrest};
9067: }
9068: } else {
9069: my %restored;
9070: if ($publicuser || $env{'request.state'} eq 'construct') {
9071: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9072: } else {
9073: %restored=&restore($symbparm,$courseid,$udom,$uname);
9074: }
9075: return $restored{$qualifierrest};
9076: }
9077: # ----------------------------------------------------------------- user.access
9078: } elsif ($space eq 'access') {
9079: # FIXME - not supporting calls for a specific user
9080: return &allowed($qualifier,$rest);
9081: # ------------------------------------------ user.preferences, user.environment
9082: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9083: if (($uname eq $env{'user.name'}) &&
9084: ($udom eq $env{'user.domain'})) {
9085: return $env{join('.',('environment',$qualifierrest))};
9086: } else {
9087: my %returnhash;
9088: if (!$publicuser) {
9089: %returnhash=&userenvironment($udom,$uname,
9090: $qualifierrest);
9091: }
9092: return $returnhash{$qualifierrest};
9093: }
9094: # ----------------------------------------------------------------- user.course
9095: } elsif ($space eq 'course') {
9096: # FIXME - not supporting calls for a specific user
9097: return $env{join('.',('request.course',$qualifier))};
9098: # ------------------------------------------------------------------- user.role
9099: } elsif ($space eq 'role') {
9100: # FIXME - not supporting calls for a specific user
9101: my ($role,$where)=split(/\./,$env{'request.role'});
9102: if ($qualifier eq 'value') {
9103: return $role;
9104: } elsif ($qualifier eq 'extent') {
9105: return $where;
9106: }
9107: # ----------------------------------------------------------------- user.domain
9108: } elsif ($space eq 'domain') {
9109: return $udom;
9110: # ------------------------------------------------------------------- user.name
9111: } elsif ($space eq 'name') {
9112: return $uname;
9113: # ---------------------------------------------------- Any other user namespace
9114: } else {
9115: my %reply;
9116: if (!$publicuser) {
9117: %reply=&get($space,[$qualifierrest],$udom,$uname);
9118: }
9119: return $reply{$qualifierrest};
9120: }
9121: } elsif ($realm eq 'query') {
9122: # ---------------------------------------------- pull stuff out of query string
9123: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9124: [$spacequalifierrest]);
9125: return $env{'form.'.$spacequalifierrest};
9126: } elsif ($realm eq 'request') {
9127: # ------------------------------------------------------------- request.browser
9128: if ($space eq 'browser') {
9129: return $env{'browser.'.$qualifier};
9130: # ------------------------------------------------------------ request.filename
9131: } else {
9132: return $env{'request.'.$spacequalifierrest};
9133: }
9134: } elsif ($realm eq 'course') {
9135: # ---------------------------------------------------------- course.description
9136: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9137: } elsif ($realm eq 'resource') {
9138:
9139: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9140: if (!$symbparm) { $symbparm=&symbread(); }
9141: }
9142:
9143: if ($space eq 'title') {
9144: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9145: return &gettitle($symbparm);
9146: }
9147:
9148: if ($space eq 'map') {
9149: my ($map) = &decode_symb($symbparm);
9150: return &symbread($map);
9151: }
9152: if ($space eq 'filename') {
9153: if ($symbparm) {
9154: return &clutter((&decode_symb($symbparm))[2]);
9155: }
9156: return &hreflocation('',$env{'request.filename'});
9157: }
9158:
9159: my ($section, $group, @groups);
9160: my ($courselevelm,$courselevel);
9161: if ($symbparm && defined($courseid) &&
9162: $courseid eq $env{'request.course.id'}) {
9163:
9164: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9165:
9166: # ----------------------------------------------------- Cascading lookup scheme
9167: my $symbp=$symbparm;
9168: my $mapp=&deversion((&decode_symb($symbp))[0]);
9169:
9170: my $symbparm=$symbp.'.'.$spacequalifierrest;
9171: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9172:
9173: if (($env{'user.name'} eq $uname) &&
9174: ($env{'user.domain'} eq $udom)) {
9175: $section=$env{'request.course.sec'};
9176: @groups = split(/:/,$env{'request.course.groups'});
9177: @groups=&sort_course_groups($courseid,@groups);
9178: } else {
9179: if (! defined($usection)) {
9180: $section=&getsection($udom,$uname,$courseid);
9181: } else {
9182: $section = $usection;
9183: }
9184: @groups = &get_users_groups($udom,$uname,$courseid);
9185: }
9186:
9187: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9188: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9189: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9190:
9191: $courselevel=$courseid.'.'.$spacequalifierrest;
9192: my $courselevelr=$courseid.'.'.$symbparm;
9193: $courselevelm=$courseid.'.'.$mapparm;
9194:
9195: # ----------------------------------------------------------- first, check user
9196:
9197: my $userreply=&resdata($uname,$udom,'user',
9198: ([$courselevelr,'resource'],
9199: [$courselevelm,'map' ],
9200: [$courselevel, 'course' ]));
9201: if (defined($userreply)) { return &get_reply($userreply); }
9202:
9203: # ------------------------------------------------ second, check some of course
9204: my $coursereply;
9205: if (@groups > 0) {
9206: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9207: $mapparm,$spacequalifierrest);
9208: if (defined($coursereply)) { return &get_reply($coursereply); }
9209: }
9210:
9211: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9212: $env{'course.'.$courseid.'.domain'},
9213: 'course',
9214: ([$seclevelr, 'resource'],
9215: [$seclevelm, 'map' ],
9216: [$seclevel, 'course' ],
9217: [$courselevelr,'resource']));
9218: if (defined($coursereply)) { return &get_reply($coursereply); }
9219:
9220: # ------------------------------------------------------ third, check map parms
9221: my %parmhash=();
9222: my $thisparm='';
9223: if (tie(%parmhash,'GDBM_File',
9224: $env{'request.course.fn'}.'_parms.db',
9225: &GDBM_READER(),0640)) {
9226: $thisparm=$parmhash{$symbparm};
9227: untie(%parmhash);
9228: }
9229: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9230: }
9231: # ------------------------------------------ fourth, look in resource metadata
9232:
9233: $spacequalifierrest=~s/\./\_/;
9234: my $filename;
9235: if (!$symbparm) { $symbparm=&symbread(); }
9236: if ($symbparm) {
9237: $filename=(&decode_symb($symbparm))[2];
9238: } else {
9239: $filename=$env{'request.filename'};
9240: }
9241: my $metadata=&metadata($filename,$spacequalifierrest);
9242: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9243: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9244: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9245:
9246: # ---------------------------------------------- fourth, look in rest of course
9247: if ($symbparm && defined($courseid) &&
9248: $courseid eq $env{'request.course.id'}) {
9249: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9250: $env{'course.'.$courseid.'.domain'},
9251: 'course',
9252: ([$courselevelm,'map' ],
9253: [$courselevel, 'course']));
9254: if (defined($coursereply)) { return &get_reply($coursereply); }
9255: }
9256: # ------------------------------------------------------------------ Cascade up
9257: unless ($space eq '0') {
9258: my @parts=split(/_/,$space);
9259: my $id=pop(@parts);
9260: my $part=join('_',@parts);
9261: if ($part eq '') { $part='0'; }
9262: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9263: $symbparm,$udom,$uname,$section,1);
9264: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9265: }
9266: if ($recurse) { return undef; }
9267: my $pack_def=&packages_tab_default($filename,$varname);
9268: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9269: # ---------------------------------------------------- Any other user namespace
9270: } elsif ($realm eq 'environment') {
9271: # ----------------------------------------------------------------- environment
9272: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9273: return $env{'environment.'.$spacequalifierrest};
9274: } else {
9275: if ($uname eq 'anonymous' && $udom eq '') {
9276: return '';
9277: }
9278: my %returnhash=&userenvironment($udom,$uname,
9279: $spacequalifierrest);
9280: return $returnhash{$spacequalifierrest};
9281: }
9282: } elsif ($realm eq 'system') {
9283: # ----------------------------------------------------------------- system.time
9284: if ($space eq 'time') {
9285: return time;
9286: }
9287: } elsif ($realm eq 'server') {
9288: # ----------------------------------------------------------------- system.time
9289: if ($space eq 'name') {
9290: return $ENV{'SERVER_NAME'};
9291: }
9292: }
9293: return '';
9294: }
9295:
9296: sub get_reply {
9297: my ($reply_value) = @_;
9298: if (ref($reply_value) eq 'ARRAY') {
9299: if (wantarray) {
9300: return @$reply_value;
9301: }
9302: return $reply_value->[0];
9303: } else {
9304: return $reply_value;
9305: }
9306: }
9307:
9308: sub check_group_parms {
9309: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9310: my @groupitems = ();
9311: my $resultitem;
9312: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9313: foreach my $group (@{$groups}) {
9314: foreach my $level (@levels) {
9315: my $item = $courseid.'.['.$group.'].'.$level->[0];
9316: push(@groupitems,[$item,$level->[1]]);
9317: }
9318: }
9319: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9320: $env{'course.'.$courseid.'.domain'},
9321: 'course',@groupitems);
9322: return $coursereply;
9323: }
9324:
9325: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9326: my ($courseid,@groups) = @_;
9327: @groups = sort(@groups);
9328: return @groups;
9329: }
9330:
9331: sub packages_tab_default {
9332: my ($uri,$varname)=@_;
9333: my (undef,$part,$name)=split(/\./,$varname);
9334:
9335: my (@extension,@specifics,$do_default);
9336: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9337: my ($pack_type,$pack_part)=split(/_/,$package,2);
9338: if ($pack_type eq 'default') {
9339: $do_default=1;
9340: } elsif ($pack_type eq 'extension') {
9341: push(@extension,[$package,$pack_type,$pack_part]);
9342: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9343: # only look at packages defaults for packages that this id is
9344: push(@specifics,[$package,$pack_type,$pack_part]);
9345: }
9346: }
9347: # first look for a package that matches the requested part id
9348: foreach my $package (@specifics) {
9349: my (undef,$pack_type,$pack_part)=@{$package};
9350: next if ($pack_part ne $part);
9351: if (defined($packagetab{"$pack_type&$name&default"})) {
9352: return $packagetab{"$pack_type&$name&default"};
9353: }
9354: }
9355: # look for any possible matching non extension_ package
9356: foreach my $package (@specifics) {
9357: my (undef,$pack_type,$pack_part)=@{$package};
9358: if (defined($packagetab{"$pack_type&$name&default"})) {
9359: return $packagetab{"$pack_type&$name&default"};
9360: }
9361: if ($pack_type eq 'part') { $pack_part='0'; }
9362: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9363: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9364: }
9365: }
9366: # look for any posible extension_ match
9367: foreach my $package (@extension) {
9368: my ($package,$pack_type)=@{$package};
9369: if (defined($packagetab{"$pack_type&$name&default"})) {
9370: return $packagetab{"$pack_type&$name&default"};
9371: }
9372: if (defined($packagetab{$package."&$name&default"})) {
9373: return $packagetab{$package."&$name&default"};
9374: }
9375: }
9376: # look for a global default setting
9377: if ($do_default && defined($packagetab{"default&$name&default"})) {
9378: return $packagetab{"default&$name&default"};
9379: }
9380: return undef;
9381: }
9382:
9383: sub add_prefix_and_part {
9384: my ($prefix,$part)=@_;
9385: my $keyroot;
9386: if (defined($prefix) && $prefix !~ /^__/) {
9387: # prefix that has a part already
9388: $keyroot=$prefix;
9389: } elsif (defined($prefix)) {
9390: # prefix that is missing a part
9391: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9392: } else {
9393: # no prefix at all
9394: if (defined($part)) { $keyroot='_'.$part; }
9395: }
9396: return $keyroot;
9397: }
9398:
9399: # ---------------------------------------------------------------- Get metadata
9400:
9401: my %metaentry;
9402: my %importedpartids;
9403: sub metadata {
9404: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9405: $uri=&declutter($uri);
9406: # if it is a non metadata possible uri return quickly
9407: if (($uri eq '') ||
9408: (($uri =~ m|^/*adm/|) &&
9409: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9410: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9411: return undef;
9412: }
9413: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9414: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9415: return undef;
9416: }
9417: my $filename=$uri;
9418: $uri=~s/\.meta$//;
9419: #
9420: # Is the metadata already cached?
9421: # Look at timestamp of caching
9422: # Everything is cached by the main uri, libraries are never directly cached
9423: #
9424: if (!defined($liburi)) {
9425: my ($result,$cached)=&is_cached_new('meta',$uri);
9426: if (defined($cached)) { return $result->{':'.$what}; }
9427: }
9428: {
9429: # Imported parts would go here
9430: my %importedids=();
9431: my @origfileimportpartids=();
9432: my $importedparts=0;
9433: #
9434: # Is this a recursive call for a library?
9435: #
9436: # if (! exists($metacache{$uri})) {
9437: # $metacache{$uri}={};
9438: # }
9439: my $cachetime = 60*60;
9440: if ($liburi) {
9441: $liburi=&declutter($liburi);
9442: $filename=$liburi;
9443: } else {
9444: &devalidate_cache_new('meta',$uri);
9445: undef(%metaentry);
9446: }
9447: my %metathesekeys=();
9448: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9449: my $metastring;
9450: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9451: my $which = &hreflocation('','/'.($liburi || $uri));
9452: $metastring =
9453: &Apache::lonnet::ssi_body($which,
9454: ('grade_target' => 'meta'));
9455: $cachetime = 1; # only want this cached in the child not long term
9456: } elsif (($uri !~ m -^(editupload)/-) &&
9457: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9458: my $file=&filelocation('',&clutter($filename));
9459: #push(@{$metaentry{$uri.'.file'}},$file);
9460: $metastring=&getfile($file);
9461: }
9462: my $parser=HTML::LCParser->new(\$metastring);
9463: my $token;
9464: undef %metathesekeys;
9465: while ($token=$parser->get_token) {
9466: if ($token->[0] eq 'S') {
9467: if (defined($token->[2]->{'package'})) {
9468: #
9469: # This is a package - get package info
9470: #
9471: my $package=$token->[2]->{'package'};
9472: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9473: if (defined($token->[2]->{'id'})) {
9474: $keyroot.='_'.$token->[2]->{'id'};
9475: }
9476: if ($metaentry{':packages'}) {
9477: $metaentry{':packages'}.=','.$package.$keyroot;
9478: } else {
9479: $metaentry{':packages'}=$package.$keyroot;
9480: }
9481: foreach my $pack_entry (keys(%packagetab)) {
9482: my $part=$keyroot;
9483: $part=~s/^\_//;
9484: if ($pack_entry=~/^\Q$package\E\&/ ||
9485: $pack_entry=~/^\Q$package\E_0\&/) {
9486: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9487: # ignore package.tab specified default values
9488: # here &package_tab_default() will fetch those
9489: if ($subp eq 'default') { next; }
9490: my $value=$packagetab{$pack_entry};
9491: my $unikey;
9492: if ($pack =~ /_0$/) {
9493: $unikey='parameter_0_'.$name;
9494: $part=0;
9495: } else {
9496: $unikey='parameter'.$keyroot.'_'.$name;
9497: }
9498: if ($subp eq 'display') {
9499: $value.=' [Part: '.$part.']';
9500: }
9501: $metaentry{':'.$unikey.'.part'}=$part;
9502: $metathesekeys{$unikey}=1;
9503: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9504: $metaentry{':'.$unikey.'.'.$subp}=$value;
9505: }
9506: if (defined($metaentry{':'.$unikey.'.default'})) {
9507: $metaentry{':'.$unikey}=
9508: $metaentry{':'.$unikey.'.default'};
9509: }
9510: }
9511: }
9512: } else {
9513: #
9514: # This is not a package - some other kind of start tag
9515: #
9516: my $entry=$token->[1];
9517: my $unikey='';
9518:
9519: if ($entry eq 'import') {
9520: #
9521: # Importing a library here
9522: #
9523: my $location=$parser->get_text('/import');
9524: my $dir=$filename;
9525: $dir=~s|[^/]*$||;
9526: $location=&filelocation($dir,$location);
9527:
9528: my $importmode=$token->[2]->{'importmode'};
9529: if ($importmode eq 'problem') {
9530: # Import as problem/response
9531: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9532: } elsif ($importmode eq 'part') {
9533: # Import as part(s)
9534: $importedparts=1;
9535: # We need to get the original file and the imported file to get the part order correct
9536: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9537: # Load and inspect original file
9538: if ($#origfileimportpartids<0) {
9539: undef(%importedpartids);
9540: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9541: my $origfile=&getfile($origfilelocation);
9542: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9543: }
9544:
9545: # Load and inspect imported file
9546: my $impfile=&getfile($location);
9547: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9548: if ($#impfilepartids>=0) {
9549: # This problem had parts
9550: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9551: } else {
9552: # Importing by turning a single problem into a problem part
9553: # It gets the import-tags ID as part-ID
9554: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9555: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9556: }
9557: } else {
9558: # Normal import
9559: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9560: if (defined($token->[2]->{'id'})) {
9561: $unikey.='_'.$token->[2]->{'id'};
9562: }
9563: }
9564:
9565: if ($depthcount<20) {
9566: my $metadata =
9567: &metadata($uri,'keys', $location,$unikey,
9568: $depthcount+1);
9569: foreach my $meta (split(',',$metadata)) {
9570: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9571: $metathesekeys{$meta}=1;
9572: }
9573:
9574: }
9575: } else {
9576: #
9577: # Not importing, some other kind of non-package, non-library start tag
9578: #
9579: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9580: if (defined($token->[2]->{'id'})) {
9581: $unikey.='_'.$token->[2]->{'id'};
9582: }
9583: if (defined($token->[2]->{'name'})) {
9584: $unikey.='_'.$token->[2]->{'name'};
9585: }
9586: $metathesekeys{$unikey}=1;
9587: foreach my $param (@{$token->[3]}) {
9588: $metaentry{':'.$unikey.'.'.$param} =
9589: $token->[2]->{$param};
9590: }
9591: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9592: my $default=$metaentry{':'.$unikey.'.default'};
9593: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9594: # only ws inside the tag, and not in default, so use default
9595: # as value
9596: $metaentry{':'.$unikey}=$default;
9597: } elsif ( $internaltext =~ /\S/ ) {
9598: # something interesting inside the tag
9599: $metaentry{':'.$unikey}=$internaltext;
9600: } else {
9601: # no interesting values, don't set a default
9602: }
9603: # end of not-a-package not-a-library import
9604: }
9605: # end of not-a-package start tag
9606: }
9607: # the next is the end of "start tag"
9608: }
9609: }
9610: my ($extension) = ($uri =~ /\.(\w+)$/);
9611: $extension = lc($extension);
9612: if ($extension eq 'htm') { $extension='html'; }
9613:
9614: foreach my $key (keys(%packagetab)) {
9615: #no specific packages #how's our extension
9616: if ($key!~/^extension_\Q$extension\E&/) { next; }
9617: &metadata_create_package_def($uri,$key,'extension_'.$extension,
9618: \%metathesekeys);
9619: }
9620:
9621: if (!exists($metaentry{':packages'})
9622: || $packagetab{"import_defaults&extension_$extension"}) {
9623: foreach my $key (keys(%packagetab)) {
9624: #no specific packages well let's get default then
9625: if ($key!~/^default&/) { next; }
9626: &metadata_create_package_def($uri,$key,'default',
9627: \%metathesekeys);
9628: }
9629: }
9630: # are there custom rights to evaluate
9631: if ($metaentry{':copyright'} eq 'custom') {
9632:
9633: #
9634: # Importing a rights file here
9635: #
9636: unless ($depthcount) {
9637: my $location=$metaentry{':customdistributionfile'};
9638: my $dir=$filename;
9639: $dir=~s|[^/]*$||;
9640: $location=&filelocation($dir,$location);
9641: my $rights_metadata =
9642: &metadata($uri,'keys',$location,'_rights',
9643: $depthcount+1);
9644: foreach my $rights (split(',',$rights_metadata)) {
9645: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
9646: $metathesekeys{$rights}=1;
9647: }
9648: }
9649: }
9650: # uniqifiy package listing
9651: my %seen;
9652: my @uniq_packages =
9653: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
9654: $metaentry{':packages'} = join(',',@uniq_packages);
9655:
9656: if ($importedparts) {
9657: # We had imported parts and need to rebuild partorder
9658: $metaentry{':partorder'}='';
9659: $metathesekeys{'partorder'}=1;
9660: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
9661: if ($origfileimportpartids[$index] eq 'part') {
9662: # original part, part of the problem
9663: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
9664: } else {
9665: # we have imported parts at this position
9666: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
9667: }
9668: }
9669: $metaentry{':partorder'}=~s/^\,//;
9670: }
9671:
9672: $metaentry{':keys'} = join(',',keys(%metathesekeys));
9673: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
9674: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
9675: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9676: # this is the end of "was not already recently cached
9677: }
9678: return $metaentry{':'.$what};
9679: }
9680:
9681: sub metadata_create_package_def {
9682: my ($uri,$key,$package,$metathesekeys)=@_;
9683: my ($pack,$name,$subp)=split(/\&/,$key);
9684: if ($subp eq 'default') { next; }
9685:
9686: if (defined($metaentry{':packages'})) {
9687: $metaentry{':packages'}.=','.$package;
9688: } else {
9689: $metaentry{':packages'}=$package;
9690: }
9691: my $value=$packagetab{$key};
9692: my $unikey;
9693: $unikey='parameter_0_'.$name;
9694: $metaentry{':'.$unikey.'.part'}=0;
9695: $$metathesekeys{$unikey}=1;
9696: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9697: $metaentry{':'.$unikey.'.'.$subp}=$value;
9698: }
9699: if (defined($metaentry{':'.$unikey.'.default'})) {
9700: $metaentry{':'.$unikey}=
9701: $metaentry{':'.$unikey.'.default'};
9702: }
9703: }
9704:
9705: sub metadata_generate_part0 {
9706: my ($metadata,$metacache,$uri) = @_;
9707: my %allnames;
9708: foreach my $metakey (keys(%$metadata)) {
9709: if ($metakey=~/^parameter\_(.*)/) {
9710: my $part=$$metacache{':'.$metakey.'.part'};
9711: my $name=$$metacache{':'.$metakey.'.name'};
9712: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9713: $allnames{$name}=$part;
9714: }
9715: }
9716: }
9717: foreach my $name (keys(%allnames)) {
9718: $$metadata{"parameter_0_$name"}=1;
9719: my $key=":parameter_0_$name";
9720: $$metacache{"$key.part"}='0';
9721: $$metacache{"$key.name"}=$name;
9722: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9723: $allnames{$name}.'_'.$name.
9724: '.type'};
9725: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9726: '.display'};
9727: my $expr='[Part: '.$allnames{$name}.']';
9728: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9729: $$metacache{"$key.display"}=$olddis;
9730: }
9731: }
9732:
9733: # ------------------------------------------------------ Devalidate title cache
9734:
9735: sub devalidate_title_cache {
9736: my ($url)=@_;
9737: if (!$env{'request.course.id'}) { return; }
9738: my $symb=&symbread($url);
9739: if (!$symb) { return; }
9740: my $key=$env{'request.course.id'}."\0".$symb;
9741: &devalidate_cache_new('title',$key);
9742: }
9743:
9744: # ------------------------------------------------- Get the title of a course
9745:
9746: sub current_course_title {
9747: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
9748: }
9749: # ------------------------------------------------- Get the title of a resource
9750:
9751: sub gettitle {
9752: my $urlsymb=shift;
9753: my $symb=&symbread($urlsymb);
9754: if ($symb) {
9755: my $key=$env{'request.course.id'}."\0".$symb;
9756: my ($result,$cached)=&is_cached_new('title',$key);
9757: if (defined($cached)) {
9758: return $result;
9759: }
9760: my ($map,$resid,$url)=&decode_symb($symb);
9761: my $title='';
9762: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
9763: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
9764: } else {
9765: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9766: &GDBM_READER(),0640)) {
9767: my $mapid=$bighash{'map_pc_'.&clutter($map)};
9768: $title=$bighash{'title_'.$mapid.'.'.$resid};
9769: untie(%bighash);
9770: }
9771: }
9772: $title=~s/\&colon\;/\:/gs;
9773: if ($title) {
9774: # Remember both $symb and $title for dynamic metadata
9775: $accesshash{$symb.'___crstitle'}=$title;
9776: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
9777: # Cache this title and then return it
9778: return &do_cache_new('title',$key,$title,600);
9779: }
9780: $urlsymb=$url;
9781: }
9782: my $title=&metadata($urlsymb,'title');
9783: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
9784: return $title;
9785: }
9786:
9787: sub get_slot {
9788: my ($which,$cnum,$cdom)=@_;
9789: if (!$cnum || !$cdom) {
9790: (undef,my $courseid)=&whichuser();
9791: $cdom=$env{'course.'.$courseid.'.domain'};
9792: $cnum=$env{'course.'.$courseid.'.num'};
9793: }
9794: my $key=join("\0",'slots',$cdom,$cnum,$which);
9795: my %slotinfo;
9796: if (exists($remembered{$key})) {
9797: $slotinfo{$which} = $remembered{$key};
9798: } else {
9799: %slotinfo=&get('slots',[$which],$cdom,$cnum);
9800: &Apache::lonhomework::showhash(%slotinfo);
9801: my ($tmp)=keys(%slotinfo);
9802: if ($tmp=~/^error:/) { return (); }
9803: $remembered{$key} = $slotinfo{$which};
9804: }
9805: if (ref($slotinfo{$which}) eq 'HASH') {
9806: return %{$slotinfo{$which}};
9807: }
9808: return $slotinfo{$which};
9809: }
9810:
9811: sub get_reservable_slots {
9812: my ($cnum,$cdom,$uname,$udom) = @_;
9813: my $now = time;
9814: my $reservable_info;
9815: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
9816: if (exists($remembered{$key})) {
9817: $reservable_info = $remembered{$key};
9818: } else {
9819: my %resv;
9820: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
9821: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
9822: $reservable_info = \%resv;
9823: $remembered{$key} = $reservable_info;
9824: }
9825: return $reservable_info;
9826: }
9827:
9828: sub get_course_slots {
9829: my ($cnum,$cdom) = @_;
9830: my $hashid=$cnum.':'.$cdom;
9831: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
9832: if (defined($cached)) {
9833: if (ref($result) eq 'HASH') {
9834: return %{$result};
9835: }
9836: } else {
9837: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
9838: my ($tmp) = keys(%slots);
9839: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9840: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
9841: return %slots;
9842: }
9843: }
9844: return;
9845: }
9846:
9847: sub devalidate_slots_cache {
9848: my ($cnum,$cdom)=@_;
9849: my $hashid=$cnum.':'.$cdom;
9850: &devalidate_cache_new('allslots',$hashid);
9851: }
9852:
9853: # ------------------------------------------------- Update symbolic store links
9854:
9855: sub symblist {
9856: my ($mapname,%newhash)=@_;
9857: $mapname=&deversion(&declutter($mapname));
9858: my %hash;
9859: if (($env{'request.course.fn'}) && (%newhash)) {
9860: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9861: &GDBM_WRCREAT(),0640)) {
9862: foreach my $url (keys(%newhash)) {
9863: next if ($url eq 'last_known'
9864: && $env{'form.no_update_last_known'});
9865: $hash{declutter($url)}=&encode_symb($mapname,
9866: $newhash{$url}->[1],
9867: $newhash{$url}->[0]);
9868: }
9869: if (untie(%hash)) {
9870: return 'ok';
9871: }
9872: }
9873: }
9874: return 'error';
9875: }
9876:
9877: # --------------------------------------------------------------- Verify a symb
9878:
9879: sub symbverify {
9880: my ($symb,$thisurl)=@_;
9881: my $thisfn=$thisurl;
9882: $thisfn=&declutter($thisfn);
9883: # direct jump to resource in page or to a sequence - will construct own symbs
9884: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
9885: # check URL part
9886: my ($map,$resid,$url)=&decode_symb($symb);
9887:
9888: unless ($url eq $thisfn) { return 0; }
9889:
9890: $symb=&symbclean($symb);
9891: $thisurl=&deversion($thisurl);
9892: $thisfn=&deversion($thisfn);
9893:
9894: my %bighash;
9895: my $okay=0;
9896:
9897: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9898: &GDBM_READER(),0640)) {
9899: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9900: $thisurl =~ s/\?.+$//;
9901: }
9902: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9903: unless ($ids) {
9904: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9905: $ids=$bighash{$idkey};
9906: }
9907: if ($ids) {
9908: # ------------------------------------------------------------------- Has ID(s)
9909: foreach my $id (split(/\,/,$ids)) {
9910: my ($mapid,$resid)=split(/\./,$id);
9911: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9912: $symb =~ s/\?.+$//;
9913: }
9914: if (
9915: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9916: eq $symb) {
9917: if (($env{'request.role.adv'}) ||
9918: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9919: ($thisurl eq '/adm/navmaps')) {
9920: $okay=1;
9921: }
9922: }
9923: }
9924: }
9925: untie(%bighash);
9926: }
9927: return $okay;
9928: }
9929:
9930: # --------------------------------------------------------------- Clean-up symb
9931:
9932: sub symbclean {
9933: my $symb=shift;
9934: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9935: # remove version from map
9936: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9937:
9938: # remove version from URL
9939: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9940:
9941: # remove wrapper
9942:
9943: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9944: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9945: return $symb;
9946: }
9947:
9948: # ---------------------------------------------- Split symb to find map and url
9949:
9950: sub encode_symb {
9951: my ($map,$resid,$url)=@_;
9952: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9953: }
9954:
9955: sub decode_symb {
9956: my $symb=shift;
9957: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9958: my ($map,$resid,$url)=split(/___/,$symb);
9959: return (&fixversion($map),$resid,&fixversion($url));
9960: }
9961:
9962: sub fixversion {
9963: my $fn=shift;
9964: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9965: my %bighash;
9966: my $uri=&clutter($fn);
9967: my $key=$env{'request.course.id'}.'_'.$uri;
9968: # is this cached?
9969: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9970: if (defined($cached)) { return $result; }
9971: # unfortunately not cached, or expired
9972: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9973: &GDBM_READER(),0640)) {
9974: if ($bighash{'version_'.$uri}) {
9975: my $version=$bighash{'version_'.$uri};
9976: unless (($version eq 'mostrecent') ||
9977: ($version==&getversion($uri))) {
9978: $uri=~s/\.(\w+)$/\.$version\.$1/;
9979: }
9980: }
9981: untie %bighash;
9982: }
9983: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9984: }
9985:
9986: sub deversion {
9987: my $url=shift;
9988: $url=~s/\.\d+\.(\w+)$/\.$1/;
9989: return $url;
9990: }
9991:
9992: # ------------------------------------------------------ Return symb list entry
9993:
9994: sub symbread {
9995: my ($thisfn,$donotrecurse)=@_;
9996: my $cache_str='request.symbread.cached.'.$thisfn;
9997: if (defined($env{$cache_str})) {
9998: if (($thisfn) || ($env{$cache_str} ne '')) {
9999: return $env{$cache_str};
10000: }
10001: }
10002: # no filename provided? try from environment
10003: unless ($thisfn) {
10004: if ($env{'request.symb'}) {
10005: return $env{$cache_str}=&symbclean($env{'request.symb'});
10006: }
10007: $thisfn=$env{'request.filename'};
10008: }
10009: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10010: # is that filename actually a symb? Verify, clean, and return
10011: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10012: if (&symbverify($thisfn,$1)) {
10013: return $env{$cache_str}=&symbclean($thisfn);
10014: }
10015: }
10016: $thisfn=declutter($thisfn);
10017: my %hash;
10018: my %bighash;
10019: my $syval='';
10020: if (($env{'request.course.fn'}) && ($thisfn)) {
10021: my $targetfn = $thisfn;
10022: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10023: $targetfn = 'adm/wrapper/'.$thisfn;
10024: }
10025: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10026: $targetfn=$1;
10027: }
10028: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10029: &GDBM_READER(),0640)) {
10030: $syval=$hash{$targetfn};
10031: untie(%hash);
10032: }
10033: # ---------------------------------------------------------- There was an entry
10034: if ($syval) {
10035: #unless ($syval=~/\_\d+$/) {
10036: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10037: #&appenv({'request.ambiguous' => $thisfn});
10038: #return $env{$cache_str}='';
10039: #}
10040: #$syval.=$1;
10041: #}
10042: } else {
10043: # ------------------------------------------------------- Was not in symb table
10044: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10045: &GDBM_READER(),0640)) {
10046: # ---------------------------------------------- Get ID(s) for current resource
10047: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10048: unless ($ids) {
10049: $ids=$bighash{'ids_/'.$thisfn};
10050: }
10051: unless ($ids) {
10052: # alias?
10053: $ids=$bighash{'mapalias_'.$thisfn};
10054: }
10055: if ($ids) {
10056: # ------------------------------------------------------------------- Has ID(s)
10057: my @possibilities=split(/\,/,$ids);
10058: if ($#possibilities==0) {
10059: # ----------------------------------------------- There is only one possibility
10060: my ($mapid,$resid)=split(/\./,$ids);
10061: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10062: $resid,$thisfn);
10063: } elsif (!$donotrecurse) {
10064: # ------------------------------------------ There is more than one possibility
10065: my $realpossible=0;
10066: foreach my $id (@possibilities) {
10067: my $file=$bighash{'src_'.$id};
10068: if (&allowed('bre',$file)) {
10069: my ($mapid,$resid)=split(/\./,$id);
10070: if ($bighash{'map_type_'.$mapid} ne 'page') {
10071: $realpossible++;
10072: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10073: $resid,$thisfn);
10074: }
10075: }
10076: }
10077: if ($realpossible!=1) { $syval=''; }
10078: } else {
10079: $syval='';
10080: }
10081: }
10082: untie(%bighash)
10083: }
10084: }
10085: if ($syval) {
10086: return $env{$cache_str}=$syval;
10087: }
10088: }
10089: &appenv({'request.ambiguous' => $thisfn});
10090: return $env{$cache_str}='';
10091: }
10092:
10093: # ---------------------------------------------------------- Return random seed
10094:
10095: sub numval {
10096: my $txt=shift;
10097: $txt=~tr/A-J/0-9/;
10098: $txt=~tr/a-j/0-9/;
10099: $txt=~tr/K-T/0-9/;
10100: $txt=~tr/k-t/0-9/;
10101: $txt=~tr/U-Z/0-5/;
10102: $txt=~tr/u-z/0-5/;
10103: $txt=~s/\D//g;
10104: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10105: return int($txt);
10106: }
10107:
10108: sub numval2 {
10109: my $txt=shift;
10110: $txt=~tr/A-J/0-9/;
10111: $txt=~tr/a-j/0-9/;
10112: $txt=~tr/K-T/0-9/;
10113: $txt=~tr/k-t/0-9/;
10114: $txt=~tr/U-Z/0-5/;
10115: $txt=~tr/u-z/0-5/;
10116: $txt=~s/\D//g;
10117: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10118: my $total;
10119: foreach my $val (@txts) { $total+=$val; }
10120: if ($_64bit) { if ($total > 2**32) { return -1; } }
10121: return int($total);
10122: }
10123:
10124: sub numval3 {
10125: use integer;
10126: my $txt=shift;
10127: $txt=~tr/A-J/0-9/;
10128: $txt=~tr/a-j/0-9/;
10129: $txt=~tr/K-T/0-9/;
10130: $txt=~tr/k-t/0-9/;
10131: $txt=~tr/U-Z/0-5/;
10132: $txt=~tr/u-z/0-5/;
10133: $txt=~s/\D//g;
10134: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10135: my $total;
10136: foreach my $val (@txts) { $total+=$val; }
10137: if ($_64bit) { $total=(($total<<32)>>32); }
10138: return $total;
10139: }
10140:
10141: sub digest {
10142: my ($data)=@_;
10143: my $digest=&Digest::MD5::md5($data);
10144: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10145: my ($e,$f);
10146: {
10147: use integer;
10148: $e=($a+$b);
10149: $f=($c+$d);
10150: if ($_64bit) {
10151: $e=(($e<<32)>>32);
10152: $f=(($f<<32)>>32);
10153: }
10154: }
10155: if (wantarray) {
10156: return ($e,$f);
10157: } else {
10158: my $g;
10159: {
10160: use integer;
10161: $g=($e+$f);
10162: if ($_64bit) {
10163: $g=(($g<<32)>>32);
10164: }
10165: }
10166: return $g;
10167: }
10168: }
10169:
10170: sub latest_rnd_algorithm_id {
10171: return '64bit5';
10172: }
10173:
10174: sub get_rand_alg {
10175: my ($courseid)=@_;
10176: if (!$courseid) { $courseid=(&whichuser())[1]; }
10177: if ($courseid) {
10178: return $env{"course.$courseid.rndseed"};
10179: }
10180: return &latest_rnd_algorithm_id();
10181: }
10182:
10183: sub validCODE {
10184: my ($CODE)=@_;
10185: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10186: return 0;
10187: }
10188:
10189: sub getCODE {
10190: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10191: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10192: defined($Apache::lonhomework::parsing_a_task) ) &&
10193: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10194: return $Apache::lonhomework::history{'resource.CODE'};
10195: }
10196: return undef;
10197: }
10198: #
10199: # Determines the random seed for a specific context:
10200: #
10201: # parameters:
10202: # symb - in course context the symb for the seed.
10203: # course_id - The course id of the form domain_coursenum.
10204: # domain - Domain for the user.
10205: # course - Course for the user.
10206: # cenv - environment of the course.
10207: #
10208: # NOTE:
10209: # All parameters are picked out of the environment if missing
10210: # or not defined.
10211: # If a symb cannot be determined the current time is used instead.
10212: #
10213: # For a given well defined symb, courside, domain, username,
10214: # and course environment, the seed is reproducible.
10215: #
10216: sub rndseed {
10217: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10218: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10219: if (!defined($symb)) {
10220: unless ($symb=$wsymb) { return time; }
10221: }
10222: if (!defined $courseid) {
10223: $courseid=$wcourseid;
10224: }
10225: if (!defined $domain) { $domain=$wdomain; }
10226: if (!defined $username) { $username=$wusername }
10227:
10228: my $which;
10229: if (defined($cenv->{'rndseed'})) {
10230: $which = $cenv->{'rndseed'};
10231: } else {
10232: $which =&get_rand_alg($courseid);
10233: }
10234: if (defined(&getCODE())) {
10235:
10236: if ($which eq '64bit5') {
10237: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10238: } elsif ($which eq '64bit4') {
10239: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10240: } else {
10241: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10242: }
10243: } elsif ($which eq '64bit5') {
10244: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10245: } elsif ($which eq '64bit4') {
10246: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10247: } elsif ($which eq '64bit3') {
10248: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10249: } elsif ($which eq '64bit2') {
10250: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10251: } elsif ($which eq '64bit') {
10252: return &rndseed_64bit($symb,$courseid,$domain,$username);
10253: }
10254: return &rndseed_32bit($symb,$courseid,$domain,$username);
10255: }
10256:
10257: sub rndseed_32bit {
10258: my ($symb,$courseid,$domain,$username)=@_;
10259: {
10260: use integer;
10261: my $symbchck=unpack("%32C*",$symb) << 27;
10262: my $symbseed=numval($symb) << 22;
10263: my $namechck=unpack("%32C*",$username) << 17;
10264: my $nameseed=numval($username) << 12;
10265: my $domainseed=unpack("%32C*",$domain) << 7;
10266: my $courseseed=unpack("%32C*",$courseid);
10267: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10268: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10269: #&logthis("rndseed :$num:$symb");
10270: if ($_64bit) { $num=(($num<<32)>>32); }
10271: return $num;
10272: }
10273: }
10274:
10275: sub rndseed_64bit {
10276: my ($symb,$courseid,$domain,$username)=@_;
10277: {
10278: use integer;
10279: my $symbchck=unpack("%32S*",$symb) << 21;
10280: my $symbseed=numval($symb) << 10;
10281: my $namechck=unpack("%32S*",$username);
10282:
10283: my $nameseed=numval($username) << 21;
10284: my $domainseed=unpack("%32S*",$domain) << 10;
10285: my $courseseed=unpack("%32S*",$courseid);
10286:
10287: my $num1=$symbchck+$symbseed+$namechck;
10288: my $num2=$nameseed+$domainseed+$courseseed;
10289: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10290: #&logthis("rndseed :$num:$symb");
10291: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10292: return "$num1,$num2";
10293: }
10294: }
10295:
10296: sub rndseed_64bit2 {
10297: my ($symb,$courseid,$domain,$username)=@_;
10298: {
10299: use integer;
10300: # strings need to be an even # of cahracters long, it it is odd the
10301: # last characters gets thrown away
10302: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10303: my $symbseed=numval($symb) << 10;
10304: my $namechck=unpack("%32S*",$username.' ');
10305:
10306: my $nameseed=numval($username) << 21;
10307: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10308: my $courseseed=unpack("%32S*",$courseid.' ');
10309:
10310: my $num1=$symbchck+$symbseed+$namechck;
10311: my $num2=$nameseed+$domainseed+$courseseed;
10312: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10313: #&logthis("rndseed :$num:$symb");
10314: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10315: return "$num1,$num2";
10316: }
10317: }
10318:
10319: sub rndseed_64bit3 {
10320: my ($symb,$courseid,$domain,$username)=@_;
10321: {
10322: use integer;
10323: # strings need to be an even # of cahracters long, it it is odd the
10324: # last characters gets thrown away
10325: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10326: my $symbseed=numval2($symb) << 10;
10327: my $namechck=unpack("%32S*",$username.' ');
10328:
10329: my $nameseed=numval2($username) << 21;
10330: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10331: my $courseseed=unpack("%32S*",$courseid.' ');
10332:
10333: my $num1=$symbchck+$symbseed+$namechck;
10334: my $num2=$nameseed+$domainseed+$courseseed;
10335: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10336: #&logthis("rndseed :$num1:$num2:$_64bit");
10337: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10338:
10339: return "$num1:$num2";
10340: }
10341: }
10342:
10343: sub rndseed_64bit4 {
10344: my ($symb,$courseid,$domain,$username)=@_;
10345: {
10346: use integer;
10347: # strings need to be an even # of cahracters long, it it is odd the
10348: # last characters gets thrown away
10349: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10350: my $symbseed=numval3($symb) << 10;
10351: my $namechck=unpack("%32S*",$username.' ');
10352:
10353: my $nameseed=numval3($username) << 21;
10354: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10355: my $courseseed=unpack("%32S*",$courseid.' ');
10356:
10357: my $num1=$symbchck+$symbseed+$namechck;
10358: my $num2=$nameseed+$domainseed+$courseseed;
10359: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10360: #&logthis("rndseed :$num1:$num2:$_64bit");
10361: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10362:
10363: return "$num1:$num2";
10364: }
10365: }
10366:
10367: sub rndseed_64bit5 {
10368: my ($symb,$courseid,$domain,$username)=@_;
10369: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10370: return "$num1:$num2";
10371: }
10372:
10373: sub rndseed_CODE_64bit {
10374: my ($symb,$courseid,$domain,$username)=@_;
10375: {
10376: use integer;
10377: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10378: my $symbseed=numval2($symb);
10379: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10380: my $CODEseed=numval(&getCODE());
10381: my $courseseed=unpack("%32S*",$courseid.' ');
10382: my $num1=$symbseed+$CODEchck;
10383: my $num2=$CODEseed+$courseseed+$symbchck;
10384: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10385: #&logthis("rndseed :$num1:$num2:$symb");
10386: if ($_64bit) { $num1=(($num1<<32)>>32); }
10387: if ($_64bit) { $num2=(($num2<<32)>>32); }
10388: return "$num1:$num2";
10389: }
10390: }
10391:
10392: sub rndseed_CODE_64bit4 {
10393: my ($symb,$courseid,$domain,$username)=@_;
10394: {
10395: use integer;
10396: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10397: my $symbseed=numval3($symb);
10398: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10399: my $CODEseed=numval3(&getCODE());
10400: my $courseseed=unpack("%32S*",$courseid.' ');
10401: my $num1=$symbseed+$CODEchck;
10402: my $num2=$CODEseed+$courseseed+$symbchck;
10403: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10404: #&logthis("rndseed :$num1:$num2:$symb");
10405: if ($_64bit) { $num1=(($num1<<32)>>32); }
10406: if ($_64bit) { $num2=(($num2<<32)>>32); }
10407: return "$num1:$num2";
10408: }
10409: }
10410:
10411: sub rndseed_CODE_64bit5 {
10412: my ($symb,$courseid,$domain,$username)=@_;
10413: my $code = &getCODE();
10414: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10415: return "$num1:$num2";
10416: }
10417:
10418: sub setup_random_from_rndseed {
10419: my ($rndseed)=@_;
10420: if ($rndseed =~/([,:])/) {
10421: my ($num1,$num2)=split(/[,:]/,$rndseed);
10422: &Math::Random::random_set_seed(abs($num1),abs($num2));
10423: } else {
10424: &Math::Random::random_set_seed_from_phrase($rndseed);
10425: }
10426: }
10427:
10428: sub latest_receipt_algorithm_id {
10429: return 'receipt3';
10430: }
10431:
10432: sub recunique {
10433: my $fucourseid=shift;
10434: my $unique;
10435: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10436: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10437: $unique=$env{"course.$fucourseid.internal.encseed"};
10438: } else {
10439: $unique=$perlvar{'lonReceipt'};
10440: }
10441: return unpack("%32C*",$unique);
10442: }
10443:
10444: sub recprefix {
10445: my $fucourseid=shift;
10446: my $prefix;
10447: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10448: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10449: $prefix=$env{"course.$fucourseid.internal.encpref"};
10450: } else {
10451: $prefix=$perlvar{'lonHostID'};
10452: }
10453: return unpack("%32C*",$prefix);
10454: }
10455:
10456: sub ireceipt {
10457: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10458:
10459: my $return =&recprefix($fucourseid).'-';
10460:
10461: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10462: $env{'request.state'} eq 'construct') {
10463: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10464: return $return;
10465: }
10466:
10467: my $cuname=unpack("%32C*",$funame);
10468: my $cudom=unpack("%32C*",$fudom);
10469: my $cucourseid=unpack("%32C*",$fucourseid);
10470: my $cusymb=unpack("%32C*",$fusymb);
10471: my $cunique=&recunique($fucourseid);
10472: my $cpart=unpack("%32S*",$part);
10473: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10474:
10475: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10476:
10477: $return.= ($cunique%$cuname+
10478: $cunique%$cudom+
10479: $cusymb%$cuname+
10480: $cusymb%$cudom+
10481: $cucourseid%$cuname+
10482: $cucourseid%$cudom+
10483: $cpart%$cuname+
10484: $cpart%$cudom);
10485: } else {
10486: $return.= ($cunique%$cuname+
10487: $cunique%$cudom+
10488: $cusymb%$cuname+
10489: $cusymb%$cudom+
10490: $cucourseid%$cuname+
10491: $cucourseid%$cudom);
10492: }
10493: return $return;
10494: }
10495:
10496: sub receipt {
10497: my ($part)=@_;
10498: my ($symb,$courseid,$domain,$name) = &whichuser();
10499: return &ireceipt($name,$domain,$courseid,$symb,$part);
10500: }
10501:
10502: sub whichuser {
10503: my ($passedsymb)=@_;
10504: my ($symb,$courseid,$domain,$name,$publicuser);
10505: if (defined($env{'form.grade_symb'})) {
10506: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10507: my $allowed=&allowed('vgr',$tmp_courseid);
10508: if (!$allowed &&
10509: exists($env{'request.course.sec'}) &&
10510: $env{'request.course.sec'} !~ /^\s*$/) {
10511: $allowed=&allowed('vgr',$tmp_courseid.
10512: '/'.$env{'request.course.sec'});
10513: }
10514: if ($allowed) {
10515: ($symb)=&get_env_multiple('form.grade_symb');
10516: $courseid=$tmp_courseid;
10517: ($domain)=&get_env_multiple('form.grade_domain');
10518: ($name)=&get_env_multiple('form.grade_username');
10519: return ($symb,$courseid,$domain,$name,$publicuser);
10520: }
10521: }
10522: if (!$passedsymb) {
10523: $symb=&symbread();
10524: } else {
10525: $symb=$passedsymb;
10526: }
10527: $courseid=$env{'request.course.id'};
10528: $domain=$env{'user.domain'};
10529: $name=$env{'user.name'};
10530: if ($name eq 'public' && $domain eq 'public') {
10531: if (!defined($env{'form.username'})) {
10532: $env{'form.username'}.=time.rand(10000000);
10533: }
10534: $name.=$env{'form.username'};
10535: }
10536: return ($symb,$courseid,$domain,$name,$publicuser);
10537:
10538: }
10539:
10540: # ------------------------------------------------------------ Serves up a file
10541: # returns either the contents of the file or
10542: # -1 if the file doesn't exist
10543: #
10544: # if the target is a file that was uploaded via DOCS,
10545: # a check will be made to see if a current copy exists on the local server,
10546: # if it does this will be served, otherwise a copy will be retrieved from
10547: # the home server for the course and stored in /home/httpd/html/userfiles on
10548: # the local server.
10549:
10550: sub getfile {
10551: my ($file) = @_;
10552: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10553: &repcopy($file);
10554: return &readfile($file);
10555: }
10556:
10557: sub repcopy_userfile {
10558: my ($file)=@_;
10559: my $londocroot = $perlvar{'lonDocRoot'};
10560: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10561: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10562: my ($cdom,$cnum,$filename) =
10563: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10564: my $uri="/uploaded/$cdom/$cnum/$filename";
10565: if (-e "$file") {
10566: # we already have a local copy, check it out
10567: my @fileinfo = stat($file);
10568: my $rtncode;
10569: my $info;
10570: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
10571: if ($lwpresp ne 'ok') {
10572: # there is no such file anymore, even though we had a local copy
10573: if ($rtncode eq '404') {
10574: unlink($file);
10575: }
10576: return -1;
10577: }
10578: if ($info < $fileinfo[9]) {
10579: # nice, the file we have is up-to-date, just say okay
10580: return 'ok';
10581: } else {
10582: # the file is outdated, get rid of it
10583: unlink($file);
10584: }
10585: }
10586: # one way or the other, at this point, we don't have the file
10587: # construct the correct path for the file
10588: my @parts = ($cdom,$cnum);
10589: if ($filename =~ m|^(.+)/[^/]+$|) {
10590: push @parts, split(/\//,$1);
10591: }
10592: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
10593: foreach my $part (@parts) {
10594: $path .= '/'.$part;
10595: if (!-e $path) {
10596: mkdir($path,0770);
10597: }
10598: }
10599: # now the path exists for sure
10600: # get a user agent
10601: my $ua=new LWP::UserAgent;
10602: my $transferfile=$file.'.in.transfer';
10603: # FIXME: this should flock
10604: if (-e $transferfile) { return 'ok'; }
10605: my $request;
10606: $uri=~s/^\///;
10607: my $homeserver = &homeserver($cnum,$cdom);
10608: my $protocol = $protocol{$homeserver};
10609: $protocol = 'http' if ($protocol ne 'https');
10610: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
10611: my $response=$ua->request($request,$transferfile);
10612: # did it work?
10613: if ($response->is_error()) {
10614: unlink($transferfile);
10615: &logthis("Userfile repcopy failed for $uri");
10616: return -1;
10617: }
10618: # worked, rename the transfer file
10619: rename($transferfile,$file);
10620: return 'ok';
10621: }
10622:
10623: sub tokenwrapper {
10624: my $uri=shift;
10625: $uri=~s|^https?\://([^/]+)||;
10626: $uri=~s|^/||;
10627: $env{'user.environment'}=~/\/([^\/]+)\.id/;
10628: my $token=$1;
10629: my (undef,$udom,$uname,$file)=split('/',$uri,4);
10630: if ($udom && $uname && $file) {
10631: $file=~s|(\?\.*)*$||;
10632: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
10633: my $homeserver = &homeserver($uname,$udom);
10634: my $protocol = $protocol{$homeserver};
10635: $protocol = 'http' if ($protocol ne 'https');
10636: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
10637: (($uri=~/\?/)?'&':'?').'token='.$token.
10638: '&tokenissued='.$perlvar{'lonHostID'};
10639: } else {
10640: return '/adm/notfound.html';
10641: }
10642: }
10643:
10644: # call with reqtype HEAD: get last modification time
10645: # call with reqtype GET: get the file contents
10646: # Do not call this with reqtype GET for large files! It loads everything into memory
10647: #
10648: sub getuploaded {
10649: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
10650: $uri=~s/^\///;
10651: my $homeserver = &homeserver($cnum,$cdom);
10652: my $protocol = $protocol{$homeserver};
10653: $protocol = 'http' if ($protocol ne 'https');
10654: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
10655: my $ua=new LWP::UserAgent;
10656: my $request=new HTTP::Request($reqtype,$uri);
10657: my $response=$ua->request($request);
10658: $$rtncode = $response->code;
10659: if (! $response->is_success()) {
10660: return 'failed';
10661: }
10662: if ($reqtype eq 'HEAD') {
10663: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
10664: } elsif ($reqtype eq 'GET') {
10665: $$info = $response->content;
10666: }
10667: return 'ok';
10668: }
10669:
10670: sub readfile {
10671: my $file = shift;
10672: if ( (! -e $file ) || ($file eq '') ) { return -1; };
10673: my $fh;
10674: open($fh,"<$file");
10675: my $a='';
10676: while (my $line = <$fh>) { $a .= $line; }
10677: return $a;
10678: }
10679:
10680: sub filelocation {
10681: my ($dir,$file) = @_;
10682: my $location;
10683: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
10684:
10685: if ($file =~ m-^/adm/-) {
10686: $file=~s-^/adm/wrapper/-/-;
10687: $file=~s-^/adm/coursedocs/showdoc/-/-;
10688: }
10689:
10690: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
10691: $location = $file;
10692: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
10693: my ($udom,$uname,$filename)=
10694: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
10695: my $home=&homeserver($uname,$udom);
10696: my $is_me=0;
10697: my @ids=¤t_machine_ids();
10698: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
10699: if ($is_me) {
10700: $location=propath($udom,$uname).'/userfiles/'.$filename;
10701: } else {
10702: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
10703: $udom.'/'.$uname.'/'.$filename;
10704: }
10705: } elsif ($file =~ m-^/adm/-) {
10706: $location = $perlvar{'lonDocRoot'}.'/'.$file;
10707: } else {
10708: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10709: $file=~s:^/(res|priv)/:/:;
10710: my $space=$1;
10711: if ( !( $file =~ m:^/:) ) {
10712: $location = $dir. '/'.$file;
10713: } else {
10714: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
10715: }
10716: }
10717: $location=~s://+:/:g; # remove duplicate /
10718: while ($location=~m{/\.\./}) {
10719: if ($location =~ m{/[^/]+/\.\./}) {
10720: $location=~ s{/[^/]+/\.\./}{/}g;
10721: } else {
10722: $location=~ s{/\.\./}{/}g;
10723: }
10724: } #remove dir/..
10725: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
10726: return $location;
10727: }
10728:
10729: sub hreflocation {
10730: my ($dir,$file)=@_;
10731: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
10732: $file=filelocation($dir,$file);
10733: } elsif ($file=~m-^/adm/-) {
10734: $file=~s-^/adm/wrapper/-/-;
10735: $file=~s-^/adm/coursedocs/showdoc/-/-;
10736: }
10737: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
10738: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
10739: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
10740: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
10741: {/uploaded/$1/$2/}x;
10742: }
10743: if ($file=~ m{^/userfiles/}) {
10744: $file =~ s{^/userfiles/}{/uploaded/};
10745: }
10746: return $file;
10747: }
10748:
10749:
10750:
10751:
10752:
10753: sub current_machine_domains {
10754: return &machine_domains(&hostname($perlvar{'lonHostID'}));
10755: }
10756:
10757: sub machine_domains {
10758: my ($hostname) = @_;
10759: my @domains;
10760: my %hostname = &all_hostnames();
10761: while( my($id, $name) = each(%hostname)) {
10762: # &logthis("-$id-$name-$hostname-");
10763: if ($hostname eq $name) {
10764: push(@domains,&host_domain($id));
10765: }
10766: }
10767: return @domains;
10768: }
10769:
10770: sub current_machine_ids {
10771: return &machine_ids(&hostname($perlvar{'lonHostID'}));
10772: }
10773:
10774: sub machine_ids {
10775: my ($hostname) = @_;
10776: $hostname ||= &hostname($perlvar{'lonHostID'});
10777: my @ids;
10778: my %name_to_host = &all_names();
10779: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
10780: return @{ $name_to_host{$hostname} };
10781: }
10782: return;
10783: }
10784:
10785: sub additional_machine_domains {
10786: my @domains;
10787: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
10788: while( my $line = <$fh>) {
10789: $line =~ s/\s//g;
10790: push(@domains,$line);
10791: }
10792: return @domains;
10793: }
10794:
10795: sub default_login_domain {
10796: my $domain = $perlvar{'lonDefDomain'};
10797: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
10798: foreach my $posdom (¤t_machine_domains(),
10799: &additional_machine_domains()) {
10800: if (lc($posdom) eq lc($testdomain)) {
10801: $domain=$posdom;
10802: last;
10803: }
10804: }
10805: return $domain;
10806: }
10807:
10808: # ------------------------------------------------------------- Declutters URLs
10809:
10810: sub declutter {
10811: my $thisfn=shift;
10812: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10813: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10814: $thisfn=~s/^\///;
10815: $thisfn=~s|^adm/wrapper/||;
10816: $thisfn=~s|^adm/coursedocs/showdoc/||;
10817: $thisfn=~s/^res\///;
10818: $thisfn=~s/^priv\///;
10819: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
10820: $thisfn=~s/\?.+$//;
10821: }
10822: return $thisfn;
10823: }
10824:
10825: # ------------------------------------------------------------- Clutter up URLs
10826:
10827: sub clutter {
10828: my $thisfn='/'.&declutter(shift);
10829: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
10830: || $thisfn =~ m{^/adm/(includes|pages)} ) {
10831: $thisfn='/res'.$thisfn;
10832: }
10833: if ($thisfn !~m|^/adm|) {
10834: if ($thisfn =~ m|^/ext/|) {
10835: $thisfn='/adm/wrapper'.$thisfn;
10836: } else {
10837: my ($ext) = ($thisfn =~ /\.(\w+)$/);
10838: my $embstyle=&Apache::loncommon::fileembstyle($ext);
10839: if ($embstyle eq 'ssi'
10840: || ($embstyle eq 'hdn')
10841: || ($embstyle eq 'rat')
10842: || ($embstyle eq 'prv')
10843: || ($embstyle eq 'ign')) {
10844: #do nothing with these
10845: } elsif (($embstyle eq 'img')
10846: || ($embstyle eq 'emb')
10847: || ($embstyle eq 'wrp')) {
10848: $thisfn='/adm/wrapper'.$thisfn;
10849: } elsif ($embstyle eq 'unk'
10850: && $thisfn!~/\.(sequence|page)$/) {
10851: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
10852: } else {
10853: # &logthis("Got a blank emb style");
10854: }
10855: }
10856: }
10857: return $thisfn;
10858: }
10859:
10860: sub clutter_with_no_wrapper {
10861: my $uri = &clutter(shift);
10862: if ($uri =~ m-^/adm/-) {
10863: $uri =~ s-^/adm/wrapper/-/-;
10864: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
10865: }
10866: return $uri;
10867: }
10868:
10869: sub freeze_escape {
10870: my ($value)=@_;
10871: if (ref($value)) {
10872: $value=&nfreeze($value);
10873: return '__FROZEN__'.&escape($value);
10874: }
10875: return &escape($value);
10876: }
10877:
10878:
10879: sub thaw_unescape {
10880: my ($value)=@_;
10881: if ($value =~ /^__FROZEN__/) {
10882: substr($value,0,10,undef);
10883: $value=&unescape($value);
10884: return &thaw($value);
10885: }
10886: return &unescape($value);
10887: }
10888:
10889: sub correct_line_ends {
10890: my ($result)=@_;
10891: $$result =~s/\r\n/\n/mg;
10892: $$result =~s/\r/\n/mg;
10893: }
10894: # ================================================================ Main Program
10895:
10896: sub goodbye {
10897: &logthis("Starting Shut down");
10898: #not converted to using infrastruture and probably shouldn't be
10899: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
10900: #converted
10901: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
10902: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
10903: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
10904: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
10905: #1.1 only
10906: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
10907: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
10908: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
10909: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
10910: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
10911: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
10912: &logthis(sprintf("%-20s is %s",'hits',$hits));
10913: &flushcourselogs();
10914: &logthis("Shutting down");
10915: }
10916:
10917: sub get_dns {
10918: my ($url,$func,$ignore_cache) = @_;
10919: if (!$ignore_cache) {
10920: my ($content,$cached)=
10921: &Apache::lonnet::is_cached_new('dns',$url);
10922: if ($cached) {
10923: &$func($content);
10924: return;
10925: }
10926: }
10927:
10928: my %alldns;
10929: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10930: foreach my $dns (<$config>) {
10931: next if ($dns !~ /^\^(\S*)/x);
10932: my $line = $1;
10933: my ($host,$protocol) = split(/:/,$line);
10934: if ($protocol ne 'https') {
10935: $protocol = 'http';
10936: }
10937: $alldns{$host} = $protocol;
10938: }
10939: while (%alldns) {
10940: my ($dns) = keys(%alldns);
10941: my $ua=new LWP::UserAgent;
10942: $ua->timeout(30);
10943: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10944: my $response=$ua->request($request);
10945: delete($alldns{$dns});
10946: next if ($response->is_error());
10947: my @content = split("\n",$response->content);
10948: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10949: &$func(\@content);
10950: return;
10951: }
10952: close($config);
10953: my $which = (split('/',$url))[3];
10954: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10955: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10956: my @content = <$config>;
10957: &$func(\@content);
10958: return;
10959: }
10960: # ------------------------------------------------------------ Read domain file
10961: {
10962: my $loaded;
10963: my %domain;
10964:
10965: sub parse_domain_tab {
10966: my ($lines) = @_;
10967: foreach my $line (@$lines) {
10968: next if ($line =~ /^(\#|\s*$ )/x);
10969:
10970: chomp($line);
10971: my ($name,@elements) = split(/:/,$line,9);
10972: my %this_domain;
10973: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10974: 'lang_def', 'city', 'longi', 'lati',
10975: 'primary') {
10976: $this_domain{$field} = shift(@elements);
10977: }
10978: $domain{$name} = \%this_domain;
10979: }
10980: }
10981:
10982: sub reset_domain_info {
10983: undef($loaded);
10984: undef(%domain);
10985: }
10986:
10987: sub load_domain_tab {
10988: my ($ignore_cache) = @_;
10989: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10990: my $fh;
10991: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10992: my @lines = <$fh>;
10993: &parse_domain_tab(\@lines);
10994: }
10995: close($fh);
10996: $loaded = 1;
10997: }
10998:
10999: sub domain {
11000: &load_domain_tab() if (!$loaded);
11001:
11002: my ($name,$what) = @_;
11003: return if ( !exists($domain{$name}) );
11004:
11005: if (!$what) {
11006: return $domain{$name}{'description'};
11007: }
11008: return $domain{$name}{$what};
11009: }
11010:
11011: sub domain_info {
11012: &load_domain_tab() if (!$loaded);
11013: return %domain;
11014: }
11015:
11016: }
11017:
11018:
11019: # ------------------------------------------------------------- Read hosts file
11020: {
11021: my %hostname;
11022: my %hostdom;
11023: my %libserv;
11024: my $loaded;
11025: my %name_to_host;
11026: my %internetdom;
11027: my %LC_dns_serv;
11028:
11029: sub parse_hosts_tab {
11030: my ($file) = @_;
11031: foreach my $configline (@$file) {
11032: next if ($configline =~ /^(\#|\s*$ )/x);
11033: chomp($configline);
11034: if ($configline =~ /^\^/) {
11035: if ($configline =~ /^\^([\w.\-]+)/) {
11036: $LC_dns_serv{$1} = 1;
11037: }
11038: next;
11039: }
11040: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11041: $name=~s/\s//g;
11042: if ($id && $domain && $role && $name) {
11043: $hostname{$id}=$name;
11044: push(@{$name_to_host{$name}}, $id);
11045: $hostdom{$id}=$domain;
11046: if ($role eq 'library') { $libserv{$id}=$name; }
11047: if (defined($protocol)) {
11048: if ($protocol eq 'https') {
11049: $protocol{$id} = $protocol;
11050: } else {
11051: $protocol{$id} = 'http';
11052: }
11053: } else {
11054: $protocol{$id} = 'http';
11055: }
11056: if (defined($intdom)) {
11057: $internetdom{$id} = $intdom;
11058: }
11059: }
11060: }
11061: }
11062:
11063: sub reset_hosts_info {
11064: &purge_remembered();
11065: &reset_domain_info();
11066: &reset_hosts_ip_info();
11067: undef(%name_to_host);
11068: undef(%hostname);
11069: undef(%hostdom);
11070: undef(%libserv);
11071: undef($loaded);
11072: }
11073:
11074: sub load_hosts_tab {
11075: my ($ignore_cache) = @_;
11076: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11077: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11078: my @config = <$config>;
11079: &parse_hosts_tab(\@config);
11080: close($config);
11081: $loaded=1;
11082: }
11083:
11084: sub hostname {
11085: &load_hosts_tab() if (!$loaded);
11086:
11087: my ($lonid) = @_;
11088: return $hostname{$lonid};
11089: }
11090:
11091: sub all_hostnames {
11092: &load_hosts_tab() if (!$loaded);
11093:
11094: return %hostname;
11095: }
11096:
11097: sub all_names {
11098: &load_hosts_tab() if (!$loaded);
11099:
11100: return %name_to_host;
11101: }
11102:
11103: sub all_host_domain {
11104: &load_hosts_tab() if (!$loaded);
11105: return %hostdom;
11106: }
11107:
11108: sub is_library {
11109: &load_hosts_tab() if (!$loaded);
11110:
11111: return exists($libserv{$_[0]});
11112: }
11113:
11114: sub all_library {
11115: &load_hosts_tab() if (!$loaded);
11116:
11117: return %libserv;
11118: }
11119:
11120: sub unique_library {
11121: #2x reverse removes all hostnames that appear more than once
11122: my %unique = reverse &all_library();
11123: return reverse %unique;
11124: }
11125:
11126: sub get_servers {
11127: &load_hosts_tab() if (!$loaded);
11128:
11129: my ($domain,$type) = @_;
11130: my %possible_hosts = ($type eq 'library') ? %libserv
11131: : %hostname;
11132: my %result;
11133: if (ref($domain) eq 'ARRAY') {
11134: while ( my ($host,$hostname) = each(%possible_hosts)) {
11135: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11136: $result{$host} = $hostname;
11137: }
11138: }
11139: } else {
11140: while ( my ($host,$hostname) = each(%possible_hosts)) {
11141: if ($hostdom{$host} eq $domain) {
11142: $result{$host} = $hostname;
11143: }
11144: }
11145: }
11146: return %result;
11147: }
11148:
11149: sub get_unique_servers {
11150: my %unique = reverse &get_servers(@_);
11151: return reverse %unique;
11152: }
11153:
11154: sub host_domain {
11155: &load_hosts_tab() if (!$loaded);
11156:
11157: my ($lonid) = @_;
11158: return $hostdom{$lonid};
11159: }
11160:
11161: sub all_domains {
11162: &load_hosts_tab() if (!$loaded);
11163:
11164: my %seen;
11165: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11166: return @uniq;
11167: }
11168:
11169: sub internet_dom {
11170: &load_hosts_tab() if (!$loaded);
11171:
11172: my ($lonid) = @_;
11173: return $internetdom{$lonid};
11174: }
11175:
11176: sub is_LC_dns {
11177: &load_hosts_tab() if (!$loaded);
11178:
11179: my ($hostname) = @_;
11180: return exists($LC_dns_serv{$hostname});
11181: }
11182:
11183: }
11184:
11185: {
11186: my %iphost;
11187: my %name_to_ip;
11188: my %lonid_to_ip;
11189:
11190: sub get_hosts_from_ip {
11191: my ($ip) = @_;
11192: my %iphosts = &get_iphost();
11193: if (ref($iphosts{$ip})) {
11194: return @{$iphosts{$ip}};
11195: }
11196: return;
11197: }
11198:
11199: sub reset_hosts_ip_info {
11200: undef(%iphost);
11201: undef(%name_to_ip);
11202: undef(%lonid_to_ip);
11203: }
11204:
11205: sub get_host_ip {
11206: my ($lonid) = @_;
11207: if (exists($lonid_to_ip{$lonid})) {
11208: return $lonid_to_ip{$lonid};
11209: }
11210: my $name=&hostname($lonid);
11211: my $ip = gethostbyname($name);
11212: return if (!$ip || length($ip) ne 4);
11213: $ip=inet_ntoa($ip);
11214: $name_to_ip{$name} = $ip;
11215: $lonid_to_ip{$lonid} = $ip;
11216: return $ip;
11217: }
11218:
11219: sub get_iphost {
11220: my ($ignore_cache) = @_;
11221:
11222: if (!$ignore_cache) {
11223: if (%iphost) {
11224: return %iphost;
11225: }
11226: my ($ip_info,$cached)=
11227: &Apache::lonnet::is_cached_new('iphost','iphost');
11228: if ($cached) {
11229: %iphost = %{$ip_info->[0]};
11230: %name_to_ip = %{$ip_info->[1]};
11231: %lonid_to_ip = %{$ip_info->[2]};
11232: return %iphost;
11233: }
11234: }
11235:
11236: # get yesterday's info for fallback
11237: my %old_name_to_ip;
11238: my ($ip_info,$cached)=
11239: &Apache::lonnet::is_cached_new('iphost','iphost');
11240: if ($cached) {
11241: %old_name_to_ip = %{$ip_info->[1]};
11242: }
11243:
11244: my %name_to_host = &all_names();
11245: foreach my $name (keys(%name_to_host)) {
11246: my $ip;
11247: if (!exists($name_to_ip{$name})) {
11248: $ip = gethostbyname($name);
11249: if (!$ip || length($ip) ne 4) {
11250: if (defined($old_name_to_ip{$name})) {
11251: $ip = $old_name_to_ip{$name};
11252: &logthis("Can't find $name defaulting to old $ip");
11253: } else {
11254: &logthis("Name $name no IP found");
11255: next;
11256: }
11257: } else {
11258: $ip=inet_ntoa($ip);
11259: }
11260: $name_to_ip{$name} = $ip;
11261: } else {
11262: $ip = $name_to_ip{$name};
11263: }
11264: foreach my $id (@{ $name_to_host{$name} }) {
11265: $lonid_to_ip{$id} = $ip;
11266: }
11267: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11268: }
11269: &Apache::lonnet::do_cache_new('iphost','iphost',
11270: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11271: 48*60*60);
11272:
11273: return %iphost;
11274: }
11275:
11276: #
11277: # Given a DNS returns the loncapa host name for that DNS
11278: #
11279: sub host_from_dns {
11280: my ($dns) = @_;
11281: my @hosts;
11282: my $ip;
11283:
11284: if (exists($name_to_ip{$dns})) {
11285: $ip = $name_to_ip{$dns};
11286: }
11287: if (!$ip) {
11288: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11289: if (length($ip) == 4) {
11290: $ip = &IO::Socket::inet_ntoa($ip);
11291: }
11292: }
11293: if ($ip) {
11294: @hosts = get_hosts_from_ip($ip);
11295: return $hosts[0];
11296: }
11297: return undef;
11298: }
11299:
11300: sub get_internet_names {
11301: my ($lonid) = @_;
11302: return if ($lonid eq '');
11303: my ($idnref,$cached)=
11304: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11305: if ($cached) {
11306: return $idnref;
11307: }
11308: my $ip = &get_host_ip($lonid);
11309: my @hosts = &get_hosts_from_ip($ip);
11310: my %iphost = &get_iphost();
11311: my (@idns,%seen);
11312: foreach my $id (@hosts) {
11313: my $dom = &host_domain($id);
11314: my $prim_id = &domain($dom,'primary');
11315: my $prim_ip = &get_host_ip($prim_id);
11316: next if ($seen{$prim_ip});
11317: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11318: foreach my $id (@{$iphost{$prim_ip}}) {
11319: my $intdom = &internet_dom($id);
11320: unless (grep(/^\Q$intdom\E$/,@idns)) {
11321: push(@idns,$intdom);
11322: }
11323: }
11324: }
11325: $seen{$prim_ip} = 1;
11326: }
11327: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11328: }
11329:
11330: }
11331:
11332: sub all_loncaparevs {
11333: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11334: }
11335:
11336: BEGIN {
11337:
11338: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11339: unless ($readit) {
11340: {
11341: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11342: %perlvar = (%perlvar,%{$configvars});
11343: }
11344:
11345:
11346: # ------------------------------------------------------ Read spare server file
11347: {
11348: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11349:
11350: while (my $configline=<$config>) {
11351: chomp($configline);
11352: if ($configline) {
11353: my ($host,$type) = split(':',$configline,2);
11354: if (!defined($type) || $type eq '') { $type = 'default' };
11355: push(@{ $spareid{$type} }, $host);
11356: }
11357: }
11358: close($config);
11359: }
11360: # ------------------------------------------------------------ Read permissions
11361: {
11362: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11363:
11364: while (my $configline=<$config>) {
11365: chomp($configline);
11366: if ($configline) {
11367: my ($role,$perm)=split(/ /,$configline);
11368: if ($perm ne '') { $pr{$role}=$perm; }
11369: }
11370: }
11371: close($config);
11372: }
11373:
11374: # -------------------------------------------- Read plain texts for permissions
11375: {
11376: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11377:
11378: while (my $configline=<$config>) {
11379: chomp($configline);
11380: if ($configline) {
11381: my ($short,@plain)=split(/:/,$configline);
11382: %{$prp{$short}} = ();
11383: if (@plain > 0) {
11384: $prp{$short}{'std'} = $plain[0];
11385: for (my $i=1; $i<@plain; $i++) {
11386: $prp{$short}{'alt'.$i} = $plain[$i];
11387: }
11388: }
11389: }
11390: }
11391: close($config);
11392: }
11393:
11394: # ---------------------------------------------------------- Read package table
11395: {
11396: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11397:
11398: while (my $configline=<$config>) {
11399: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11400: chomp($configline);
11401: my ($short,$plain)=split(/:/,$configline);
11402: my ($pack,$name)=split(/\&/,$short);
11403: if ($plain ne '') {
11404: $packagetab{$pack.'&'.$name.'&name'}=$name;
11405: $packagetab{$short}=$plain;
11406: }
11407: }
11408: close($config);
11409: }
11410:
11411: # ---------------------------------------------------------- Read loncaparev table
11412: {
11413: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11414: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11415: while (my $configline=<$config>) {
11416: chomp($configline);
11417: my ($hostid,$loncaparev)=split(/:/,$configline);
11418: $loncaparevs{$hostid}=$loncaparev;
11419: }
11420: close($config);
11421: }
11422: }
11423: }
11424:
11425: # ---------------------------------------------------------- Read serverhostID table
11426: {
11427: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11428: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11429: while (my $configline=<$config>) {
11430: chomp($configline);
11431: my ($name,$id)=split(/:/,$configline);
11432: $serverhomeIDs{$name}=$id;
11433: }
11434: close($config);
11435: }
11436: }
11437: }
11438:
11439: {
11440: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11441: if (-e $file) {
11442: my $parser = HTML::LCParser->new($file);
11443: while (my $token = $parser->get_token()) {
11444: if ($token->[0] eq 'S') {
11445: my $item = $token->[1];
11446: my $name = $token->[2]{'name'};
11447: my $value = $token->[2]{'value'};
11448: if ($item ne '' && $name ne '' && $value ne '') {
11449: my $release = $parser->get_text();
11450: $release =~ s/(^\s*|\s*$ )//gx;
11451: $needsrelease{$item.':'.$name.':'.$value} = $release;
11452: }
11453: }
11454: }
11455: }
11456: }
11457:
11458: # ---------------------------------------------------------- Read managers table
11459: {
11460: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11461: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11462: while (my $configline=<$config>) {
11463: chomp($configline);
11464: next if ($configline =~ /^\#/);
11465: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11466: $managerstab{$configline} = 1;
11467: }
11468: }
11469: close($config);
11470: }
11471: }
11472: }
11473:
11474: # ------------- set up temporary directory
11475: {
11476: $tmpdir = LONCAPA::tempdir();
11477:
11478: }
11479:
11480: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11481: 'compress_threshold'=> 20_000,
11482: });
11483:
11484: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11485: $dumpcount=0;
11486: $locknum=0;
11487:
11488: &logtouch();
11489: &logthis('<font color="yellow">INFO: Read configuration</font>');
11490: $readit=1;
11491: {
11492: use integer;
11493: my $test=(2**32)+1;
11494: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11495: &logthis(" Detected 64bit platform ($_64bit)");
11496: }
11497: }
11498: }
11499:
11500: 1;
11501: __END__
11502:
11503: =pod
11504:
11505: =head1 NAME
11506:
11507: Apache::lonnet - Subroutines to ask questions about things in the network.
11508:
11509: =head1 SYNOPSIS
11510:
11511: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11512:
11513: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11514:
11515: Common parameters:
11516:
11517: =over 4
11518:
11519: =item *
11520:
11521: $uname : an internal username (if $cname expecting a course Id specifically)
11522:
11523: =item *
11524:
11525: $udom : a domain (if $cdom expecting a course's domain specifically)
11526:
11527: =item *
11528:
11529: $symb : a resource instance identifier
11530:
11531: =item *
11532:
11533: $namespace : the name of a .db file that contains the data needed or
11534: being set.
11535:
11536: =back
11537:
11538: =head1 OVERVIEW
11539:
11540: lonnet provides subroutines which interact with the
11541: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11542: about classes, users, and resources.
11543:
11544: For many of these objects you can also use this to store data about
11545: them or modify them in various ways.
11546:
11547: =head2 Symbs
11548:
11549: To identify a specific instance of a resource, LON-CAPA uses symbols
11550: or "symbs"X<symb>. These identifiers are built from the URL of the
11551: map, the resource number of the resource in the map, and the URL of
11552: the resource itself. The latter is somewhat redundant, but might help
11553: if maps change.
11554:
11555: An example is
11556:
11557: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11558:
11559: The respective map entry is
11560:
11561: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11562: title="Problem 2">
11563: </resource>
11564:
11565: Symbs are used by the random number generator, as well as to store and
11566: restore data specific to a certain instance of for example a problem.
11567:
11568: =head2 Storing And Retrieving Data
11569:
11570: X<store()>X<cstore()>X<restore()>Three of the most important functions
11571: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
11572: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
11573: is is the non-critical message twin of cstore. These functions are for
11574: handlers to store a perl hash to a user's permanent data space in an
11575: easy manner, and to retrieve it again on another call. It is expected
11576: that a handler would use this once at the beginning to retrieve data,
11577: and then again once at the end to send only the new data back.
11578:
11579: The data is stored in the user's data directory on the user's
11580: homeserver under the ID of the course.
11581:
11582: The hash that is returned by restore will have all of the previous
11583: value for all of the elements of the hash.
11584:
11585: Example:
11586:
11587: #creating a hash
11588: my %hash;
11589: $hash{'foo'}='bar';
11590:
11591: #storing it
11592: &Apache::lonnet::cstore(\%hash);
11593:
11594: #changing a value
11595: $hash{'foo'}='notbar';
11596:
11597: #adding a new value
11598: $hash{'bar'}='foo';
11599: &Apache::lonnet::cstore(\%hash);
11600:
11601: #retrieving the hash
11602: my %history=&Apache::lonnet::restore();
11603:
11604: #print the hash
11605: foreach my $key (sort(keys(%history))) {
11606: print("\%history{$key} = $history{$key}");
11607: }
11608:
11609: Will print out:
11610:
11611: %history{1:foo} = bar
11612: %history{1:keys} = foo:timestamp
11613: %history{1:timestamp} = 990455579
11614: %history{2:bar} = foo
11615: %history{2:foo} = notbar
11616: %history{2:keys} = foo:bar:timestamp
11617: %history{2:timestamp} = 990455580
11618: %history{bar} = foo
11619: %history{foo} = notbar
11620: %history{timestamp} = 990455580
11621: %history{version} = 2
11622:
11623: Note that the special hash entries C<keys>, C<version> and
11624: C<timestamp> were added to the hash. C<version> will be equal to the
11625: total number of versions of the data that have been stored. The
11626: C<timestamp> attribute will be the UNIX time the hash was
11627: stored. C<keys> is available in every historical section to list which
11628: keys were added or changed at a specific historical revision of a
11629: hash.
11630:
11631: B<Warning>: do not store the hash that restore returns directly. This
11632: will cause a mess since it will restore the historical keys as if the
11633: were new keys. I.E. 1:foo will become 1:1:foo etc.
11634:
11635: Calling convention:
11636:
11637: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
11638: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
11639:
11640: For more detailed information, see lonnet specific documentation.
11641:
11642: =head1 RETURN MESSAGES
11643:
11644: =over 4
11645:
11646: =item * B<con_lost>: unable to contact remote host
11647:
11648: =item * B<con_delayed>: unable to contact remote host, message will be delivered
11649: when the connection is brought back up
11650:
11651: =item * B<con_failed>: unable to contact remote host and unable to save message
11652: for later delivery
11653:
11654: =item * B<error:>: an error a occurred, a description of the error follows the :
11655:
11656: =item * B<no_such_host>: unable to fund a host associated with the user/domain
11657: that was requested
11658:
11659: =back
11660:
11661: =head1 PUBLIC SUBROUTINES
11662:
11663: =head2 Session Environment Functions
11664:
11665: =over 4
11666:
11667: =item *
11668: X<appenv()>
11669: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
11670: the user envirnoment file, and will be restored for each access this
11671: user makes during this session, also modifies the %env for the current
11672: process. Optional rolesarrayref - if defined contains a reference to an array
11673: of roles which are exempt from the restriction on modifying user.role entries
11674: in the user's environment.db and in %env.
11675:
11676: =item *
11677: X<delenv()>
11678: B<delenv($delthis,$regexp)>: removes all items from the session
11679: environment file that begin with $delthis. If the
11680: optional second arg - $regexp - is true, $delthis is treated as a
11681: regular expression, otherwise \Q$delthis\E is used.
11682: The values are also deleted from the current processes %env.
11683:
11684: =item * get_env_multiple($name)
11685:
11686: gets $name from the %env hash, it seemlessly handles the cases where multiple
11687: values may be defined and end up as an array ref.
11688:
11689: returns an array of values
11690:
11691: =back
11692:
11693: =head2 User Information
11694:
11695: =over 4
11696:
11697: =item *
11698: X<queryauthenticate()>
11699: B<queryauthenticate($uname,$udom)>: try to determine user's current
11700: authentication scheme
11701:
11702: =item *
11703: X<authenticate()>
11704: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
11705: authenticate user from domain's lib servers (first use the current
11706: one). C<$upass> should be the users password.
11707: $checkdefauth is optional (value is 1 if a check should be made to
11708: authenticate user using default authentication method, and allow
11709: account creation if username does not have account in the domain).
11710: $clientcancheckhost is optional (value is 1 if checking whether the
11711: server can host will occur on the client side in lonauth.pm).
11712:
11713: =item *
11714: X<homeserver()>
11715: B<homeserver($uname,$udom)>: find the server which has
11716: the user's directory and files (there must be only one), this caches
11717: the answer, and also caches if there is a borken connection.
11718:
11719: =item *
11720: X<idget()>
11721: B<idget($udom,@ids)>: find the usernames behind a list of IDs
11722: (IDs are a unique resource in a domain, there must be only 1 ID per
11723: username, and only 1 username per ID in a specific domain) (returns
11724: hash: id=>name,id=>name)
11725:
11726: =item *
11727: X<idrget()>
11728: B<idrget($udom,@unames)>: find the IDs behind a list of
11729: usernames (returns hash: name=>id,name=>id)
11730:
11731: =item *
11732: X<idput()>
11733: B<idput($udom,%ids)>: store away a list of names and associated IDs
11734:
11735: =item *
11736: X<rolesinit()>
11737: B<rolesinit($udom,$username)>: get user privileges.
11738: returns user role, first access and timer interval hashes
11739:
11740: =item *
11741: X<privileged()>
11742: B<privileged($username,$domain)>: returns a true if user has a
11743: privileged and active role (i.e. su or dc), false otherwise.
11744:
11745: =item *
11746: X<getsection()>
11747: B<getsection($udom,$uname,$cname)>: finds the section of student in the
11748: course $cname, return section name/number or '' for "not in course"
11749: and '-1' for "no section"
11750:
11751: =item *
11752: X<userenvironment()>
11753: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
11754: passed in @what from the requested user's environment, returns a hash
11755:
11756: =item *
11757: X<userlog_query()>
11758: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
11759: activity.log file. %filters defines filters applied when parsing the
11760: log file. These can be start or end timestamps, or the type of action
11761: - log to look for Login or Logout events, check for Checkin or
11762: Checkout, role for role selection. The response is in the form
11763: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
11764: escaped strings of the action recorded in the activity.log file.
11765:
11766: =back
11767:
11768: =head2 User Roles
11769:
11770: =over 4
11771:
11772: =item *
11773:
11774: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
11775: F: full access
11776: U,I,K: authentication modes (cxx only)
11777: '': forbidden
11778: 1: user needs to choose course
11779: 2: browse allowed
11780: A: passphrase authentication needed
11781:
11782: =item *
11783:
11784: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
11785: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
11786: and course level
11787:
11788: =item *
11789:
11790: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
11791: (rolesplain.tab); plain text explanation of a user role term.
11792: $type is Course (default) or Community.
11793: If $forcedefault evaluates to true, text returned will be default
11794: text for $type. Otherwise, if this is a course, the text returned
11795: will be a custom name for the role (if defined in the course's
11796: environment). If no custom name is defined the default is returned.
11797:
11798: =item *
11799:
11800: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
11801: All arguments are optional. Returns a hash of a roles, either for
11802: co-author/assistant author roles for a user's Construction Space
11803: (default), or if $context is 'userroles', roles for the user himself,
11804: In the hash, keys are set to colon-separated $uname,$udom,$role, and
11805: (optionally) if $withsec is true, a fourth colon-separated item - $section.
11806: For each key, value is set to colon-separated start and end times for
11807: the role. If no username and domain are specified, will default to
11808: current user/domain. Types, roles, and roledoms are references to arrays
11809: of role statuses (active, future or previous), roles
11810: (e.g., cc,in, st etc.) and domains of the roles which can be used
11811: to restrict the list of roles reported. If no array ref is
11812: provided for types, will default to return only active roles.
11813:
11814: =back
11815:
11816: =head2 User Modification
11817:
11818: =over 4
11819:
11820: =item *
11821:
11822: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
11823: user for the level given by URL. Optional start and end dates (leave empty
11824: string or zero for "no date")
11825:
11826: =item *
11827:
11828: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
11829: change a users, password, possible return values are: ok,
11830: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
11831: refused
11832:
11833: =item *
11834:
11835: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
11836:
11837: =item *
11838:
11839: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
11840: $forceid,$desiredhome,$email,$inststatus,$candelete) :
11841:
11842: will update user information (firstname,middlename,lastname,generation,
11843: permanentemail), and if forceid is true, student/employee ID also.
11844: A user's institutional affiliation(s) can also be updated.
11845: User information fields will not be overwritten with empty entries
11846: unless the field is included in the $candelete array reference.
11847: This array is included when a single user is modified via "Manage Users",
11848: or when Autoupdate.pl is run by cron in a domain.
11849:
11850: =item *
11851:
11852: modifystudent
11853:
11854: modify a student's enrollment and identification information.
11855: The course id is resolved based on the current users environment.
11856: This means the envoking user must be a course coordinator or otherwise
11857: associated with a course.
11858:
11859: This call is essentially a wrapper for lonnet::modifyuser and
11860: lonnet::modify_student_enrollment
11861:
11862: Inputs:
11863:
11864: =over 4
11865:
11866: =item B<$udom> Student's loncapa domain
11867:
11868: =item B<$uname> Student's loncapa login name
11869:
11870: =item B<$uid> Student/Employee ID
11871:
11872: =item B<$umode> Student's authentication mode
11873:
11874: =item B<$upass> Student's password
11875:
11876: =item B<$first> Student's first name
11877:
11878: =item B<$middle> Student's middle name
11879:
11880: =item B<$last> Student's last name
11881:
11882: =item B<$gene> Student's generation
11883:
11884: =item B<$usec> Student's section in course
11885:
11886: =item B<$end> Unix time of the roles expiration
11887:
11888: =item B<$start> Unix time of the roles start date
11889:
11890: =item B<$forceid> If defined, allow $uid to be changed
11891:
11892: =item B<$desiredhome> server to use as home server for student
11893:
11894: =item B<$email> Student's permanent e-mail address
11895:
11896: =item B<$type> Type of enrollment (auto or manual)
11897:
11898: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
11899:
11900: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
11901:
11902: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
11903:
11904: =item B<$context> role change context (shown in User Management Logs display in a course)
11905:
11906: =item B<$inststatus> institutional status of user - : separated string of escaped status types
11907:
11908: =back
11909:
11910: =item *
11911:
11912: modify_student_enrollment
11913:
11914: Change a students enrollment status in a class. The environment variable
11915: 'role.request.course' must be defined for this function to proceed.
11916:
11917: Inputs:
11918:
11919: =over 4
11920:
11921: =item $udom, students domain
11922:
11923: =item $uname, students name
11924:
11925: =item $uid, students user id
11926:
11927: =item $first, students first name
11928:
11929: =item $middle
11930:
11931: =item $last
11932:
11933: =item $gene
11934:
11935: =item $usec
11936:
11937: =item $end
11938:
11939: =item $start
11940:
11941: =item $type
11942:
11943: =item $locktype
11944:
11945: =item $cid
11946:
11947: =item $selfenroll
11948:
11949: =item $context
11950:
11951: =back
11952:
11953:
11954: =item *
11955:
11956: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11957: custom role; give a custom role to a user for the level given by URL. Specify
11958: name and domain of role author, and role name
11959:
11960: =item *
11961:
11962: revokerole($udom,$uname,$url,$role) : revoke a role for url
11963:
11964: =item *
11965:
11966: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
11967:
11968: =back
11969:
11970: =head2 Course Infomation
11971:
11972: =over 4
11973:
11974: =item *
11975:
11976: coursedescription($courseid,$options) : returns a hash of information about the
11977: specified course id, including all environment settings for the
11978: course, the description of the course will be in the hash under the
11979: key 'description'
11980:
11981: $options is an optional parameter that if supplied is a hash reference that controls
11982: what how this function works. It has the following key/values:
11983:
11984: =over 4
11985:
11986: =item freshen_cache
11987:
11988: If defined, and the environment cache for the course is valid, it is
11989: returned in the returned hash.
11990:
11991: =item one_time
11992:
11993: If defined, the last cache time is set to _now_
11994:
11995: =item user
11996:
11997: If defined, the supplied username is used instead of the current user.
11998:
11999:
12000: =back
12001:
12002: =item *
12003:
12004: resdata($name,$domain,$type,@which) : request for current parameter
12005: setting for a specific $type, where $type is either 'course' or 'user',
12006: @what should be a list of parameters to ask about. This routine caches
12007: answers for 5 minutes.
12008:
12009: =item *
12010:
12011: get_courseresdata($courseid, $domain) : dump the entire course resource
12012: data base, returning a hash that is keyed by the resource name and has
12013: values that are the resource value. I believe that the timestamps and
12014: versions are also returned.
12015:
12016:
12017: =back
12018:
12019: =head2 Course Modification
12020:
12021: =over 4
12022:
12023: =item *
12024:
12025: writecoursepref($courseid,%prefs) : write preferences (environment
12026: database) for a course
12027:
12028: =item *
12029:
12030: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12031:
12032: =item *
12033:
12034: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12035:
12036: =item *
12037:
12038: is_course($courseid), is_course($cdom, $cnum)
12039:
12040: Accepts either a combined $courseid (in the form of domain_courseid) or the
12041: two component version $cdom, $cnum. It checks if the specified course exists.
12042:
12043: Returns:
12044: undef if the course doesn't exist, otherwise
12045: in scalar context the combined courseid.
12046: in list context the two components of the course identifier, domain and
12047: courseid.
12048:
12049: =back
12050:
12051: =head2 Resource Subroutines
12052:
12053: =over 4
12054:
12055: =item *
12056:
12057: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12058:
12059: =item *
12060:
12061: repcopy($filename) : subscribes to the requested file, and attempts to
12062: replicate from the owning library server, Might return
12063: 'unavailable', 'not_found', 'forbidden', 'ok', or
12064: 'bad_request', also attempts to grab the metadata for the
12065: resource. Expects the local filesystem pathname
12066: (/home/httpd/html/res/....)
12067:
12068: =back
12069:
12070: =head2 Resource Information
12071:
12072: =over 4
12073:
12074: =item *
12075:
12076: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12077: a vairety of different possible values, $varname should be a request
12078: string, and the other parameters can be used to specify who and what
12079: one is asking about.
12080:
12081: Possible values for $varname are environment.lastname (or other item
12082: from the envirnment hash), user.name (or someother aspect about the
12083: user), resource.0.maxtries (or some other part and parameter of a
12084: resource)
12085:
12086: =item *
12087:
12088: directcondval($number) : get current value of a condition; reads from a state
12089: string
12090:
12091: =item *
12092:
12093: condval($condidx) : value of condition index based on state
12094:
12095: =item *
12096:
12097: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12098: resource's metadata, $what should be either a specific key, or either
12099: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12100: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12101:
12102: this function automatically caches all requests
12103:
12104: =item *
12105:
12106: metadata_query($query,$custom,$customshow) : make a metadata query against the
12107: network of library servers; returns file handle of where SQL and regex results
12108: will be stored for query
12109:
12110: =item *
12111:
12112: symbread($filename) : return symbolic list entry (filename argument optional);
12113: returns the data handle
12114:
12115: =item *
12116:
12117: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
12118: a possible symb for the URL in $thisfn, and if is an encryypted
12119: resource that the user accessed using /enc/ returns a 1 on success, 0
12120: on failure, user must be in a course, as it assumes the existance of
12121: the course initial hash, and uses $env('request.course.id'}
12122:
12123:
12124: =item *
12125:
12126: symbclean($symb) : removes versions numbers from a symb, returns the
12127: cleaned symb
12128:
12129: =item *
12130:
12131: is_on_map($uri) : checks if the $uri is somewhere on the current
12132: course map, user must be in a course for it to work.
12133:
12134: =item *
12135:
12136: numval($salt) : return random seed value (addend for rndseed)
12137:
12138: =item *
12139:
12140: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12141: a random seed, all arguments are optional, if they aren't sent it uses the
12142: environment to derive them. Note: if symb isn't sent and it can't get one
12143: from &symbread it will use the current time as its return value
12144:
12145: =item *
12146:
12147: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12148: unfakeable, receipt
12149:
12150: =item *
12151:
12152: receipt() : API to ireceipt working off of env values; given out to users
12153:
12154: =item *
12155:
12156: countacc($url) : count the number of accesses to a given URL
12157:
12158: =item *
12159:
12160: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12161:
12162: =item *
12163:
12164: checkin($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 $tcrsid)
12165:
12166: =item *
12167:
12168: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12169:
12170: =item *
12171:
12172: devalidate($symb) : devalidate temporary spreadsheet calculations,
12173: forcing spreadsheet to reevaluate the resource scores next time.
12174:
12175: =back
12176:
12177: =head2 Storing/Retreiving Data
12178:
12179: =over 4
12180:
12181: =item *
12182:
12183: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12184: for this url; hashref needs to be given and should be a \%hashname; the
12185: remaining args aren't required and if they aren't passed or are '' they will
12186: be derived from the env
12187:
12188: =item *
12189:
12190: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12191: uses critical subroutine
12192:
12193: =item *
12194:
12195: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12196: all args are optional
12197:
12198: =item *
12199:
12200: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12201: dumps the complete (or key matching regexp) namespace into a hash
12202: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12203: normally &store()ed into
12204:
12205: $range should be either an integer '100' (give me the first 100
12206: matching records)
12207: or be two integers sperated by a - with no spaces
12208: '30-50' (give me the 30th through the 50th matching
12209: records)
12210:
12211:
12212: =item *
12213:
12214: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12215: replaces a &store() version of data with a replacement set of data
12216: for a particular resource in a namespace passed in the $storehash hash
12217: reference
12218:
12219: =item *
12220:
12221: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12222: works very similar to store/cstore, but all data is stored in a
12223: temporary location and can be reset using tmpreset, $storehash should
12224: be a hash reference, returns nothing on success
12225:
12226: =item *
12227:
12228: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12229: similar to restore, but all data is stored in a temporary location and
12230: can be reset using tmpreset. Returns a hash of values on success,
12231: error string otherwise.
12232:
12233: =item *
12234:
12235: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12236: deltes all keys for $symb form the temporary storage hash.
12237:
12238: =item *
12239:
12240: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12241: reference filled in from namesp ($udom and $uname are optional)
12242:
12243: =item *
12244:
12245: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12246: namesp ($udom and $uname are optional)
12247:
12248: =item *
12249:
12250: dump($namespace,$udom,$uname,$regexp,$range) :
12251: dumps the complete (or key matching regexp) namespace into a hash
12252: ($udom, $uname, $regexp, $range are optional)
12253:
12254: $range should be either an integer '100' (give me the first 100
12255: matching records)
12256: or be two integers sperated by a - with no spaces
12257: '30-50' (give me the 30th through the 50th matching
12258: records)
12259: =item *
12260:
12261: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12262: $store can be a scalar, an array reference, or if the amount to be
12263: incremented is > 1, a hash reference.
12264:
12265: ($udom and $uname are optional)
12266:
12267: =item *
12268:
12269: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12270: ($udom and $uname are optional)
12271:
12272: =item *
12273:
12274: cput($namespace,$storehash,$udom,$uname) : critical put
12275: ($udom and $uname are optional)
12276:
12277: =item *
12278:
12279: newput($namespace,$storehash,$udom,$uname) :
12280:
12281: Attempts to store the items in the $storehash, but only if they don't
12282: currently exist, if this succeeds you can be certain that you have
12283: successfully created a new key value pair in the $namespace db.
12284:
12285:
12286: Args:
12287: $namespace: name of database to store values to
12288: $storehash: hashref to store to the db
12289: $udom: (optional) domain of user containing the db
12290: $uname: (optional) name of user caontaining the db
12291:
12292: Returns:
12293: 'ok' -> succeeded in storing all keys of $storehash
12294: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12295: least <key> already existed in the db (other
12296: requested keys may also already exist)
12297: 'error: <msg>' -> unable to tie the DB or other error occurred
12298: 'con_lost' -> unable to contact request server
12299: 'refused' -> action was not allowed by remote machine
12300:
12301:
12302: =item *
12303:
12304: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12305: reference filled in from namesp (encrypts the return communication)
12306: ($udom and $uname are optional)
12307:
12308: =item *
12309:
12310: log($udom,$name,$home,$message) : write to permanent log for user; use
12311: critical subroutine
12312:
12313: =item *
12314:
12315: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12316: array reference filled in from namespace found in domain level on either
12317: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12318:
12319: =item *
12320:
12321: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12322: domain level either on specified domain server ($uhome) or primary domain
12323: server ($udom and $uhome are optional)
12324:
12325: =item *
12326:
12327: get_domain_defaults($target_domain) : returns hash with defaults for
12328: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12329: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12330: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12331: Values are retrieved from cache (if current), or from domain's configuration.db
12332: (if available), or lastly from values in lonTabs/dns_domain,tab,
12333: or lonTabs/domain.tab.
12334:
12335: %domdefaults = &get_auth_defaults($target_domain);
12336:
12337: =back
12338:
12339: =head2 Network Status Functions
12340:
12341: =over 4
12342:
12343: =item *
12344:
12345: dirlist() : return directory list based on URI (first arg).
12346:
12347: Inputs: 1 required, 5 optional.
12348:
12349: =over
12350:
12351: =item
12352: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12353:
12354: =item
12355: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12356:
12357: =item
12358: $username - username of user/course to be listed. Extracted from $uri if absent.
12359:
12360: =item
12361: $getpropath - boolean: 1 if prepend path using &propath().
12362:
12363: =item
12364: $getuserdir - boolean: 1 if prepend path for "userfiles".
12365:
12366: =item
12367: $alternateRoot - path to prepend in place of path from $uri.
12368:
12369: =back
12370:
12371: Returns: Array of up to two items.
12372:
12373: =over
12374:
12375: a reference to an array of files/subdirectories
12376:
12377: =over
12378:
12379: Each element in the array of files/subdirectories is a & separated list of
12380: item name and the result of running stat on the item. If dirlist was requested
12381: for a file instead of a directory, the item name will be ''. For a directory
12382: listing, if the item is a metadata file, the element will end &N&M
12383: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12384: default copyright set (1).
12385:
12386: =back
12387:
12388: a scalar containing error condition (if encountered).
12389:
12390: =over
12391:
12392: =item
12393: no_host (no homeserver identified for $username:$domain).
12394:
12395: =item
12396: no_such_host (server contacted for listing not identified as valid host).
12397:
12398: =item
12399: con_lost (connection to remote server failed).
12400:
12401: =item
12402: refused (invalid $username:$domain received on lond side).
12403:
12404: =item
12405: no_such_dir (directory at specified path on lond side does not exist).
12406:
12407: =item
12408: empty (directory at specified path on lond side is empty).
12409:
12410: =over
12411:
12412: This is currently not encountered because the &ls3, &ls2,
12413: &ls (_handler) routines on the lond side do not filter out
12414: . and .. from a directory listing.
12415:
12416: =back
12417:
12418: =back
12419:
12420: =back
12421:
12422: =item *
12423:
12424: spareserver() : find server with least workload from spare.tab
12425:
12426:
12427: =item *
12428:
12429: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12430: if there is no corresponding loncapa host.
12431:
12432: =back
12433:
12434:
12435: =head2 Apache Request
12436:
12437: =over 4
12438:
12439: =item *
12440:
12441: ssi($url,%hash) : server side include, does a complete request cycle on url to
12442: localhost, posts hash
12443:
12444: =back
12445:
12446: =head2 Data to String to Data
12447:
12448: =over 4
12449:
12450: =item *
12451:
12452: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12453: and '&' separators, supports elements that are arrayrefs and hashrefs
12454:
12455: =item *
12456:
12457: hashref2str($hashref) : convert a hashref into a string complete with
12458: escaping and '=' and '&' separators, supports elements that are
12459: arrayrefs and hashrefs
12460:
12461: =item *
12462:
12463: arrayref2str($arrayref) : convert an arrayref into a string complete
12464: with escaping and '&' separators, supports elements that are arrayrefs
12465: and hashrefs
12466:
12467: =item *
12468:
12469: str2hash($string) : convert string to hash using unescaping and
12470: splitting on '=' and '&', supports elements that are arrayrefs and
12471: hashrefs
12472:
12473: =item *
12474:
12475: str2array($string) : convert string to hash using unescaping and
12476: splitting on '&', supports elements that are arrayrefs and hashrefs
12477:
12478: =back
12479:
12480: =head2 Logging Routines
12481:
12482:
12483: These routines allow one to make log messages in the lonnet.log and
12484: lonnet.perm logfiles.
12485:
12486: =over 4
12487:
12488: =item *
12489:
12490: logtouch() : make sure the logfile, lonnet.log, exists
12491:
12492: =item *
12493:
12494: logthis() : append message to the normal lonnet.log file, it gets
12495: preiodically rolled over and deleted.
12496:
12497: =item *
12498:
12499: logperm() : append a permanent message to lonnet.perm.log, this log
12500: file never gets deleted by any automated portion of the system, only
12501: messages of critical importance should go in here.
12502:
12503:
12504: =back
12505:
12506: =head2 General File Helper Routines
12507:
12508: =over 4
12509:
12510: =item *
12511:
12512: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
12513: (a) files in /uploaded
12514: (i) If a local copy of the file exists -
12515: compares modification date of local copy with last-modified date for
12516: definitive version stored on home server for course. If local copy is
12517: stale, requests a new version from the home server and stores it.
12518: If the original has been removed from the home server, then local copy
12519: is unlinked.
12520: (ii) If local copy does not exist -
12521: requests the file from the home server and stores it.
12522:
12523: If $caller is 'uploadrep':
12524: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
12525: for request for files originally uploaded via DOCS.
12526: - returns 'ok' if fresh local copy now available, -1 otherwise.
12527:
12528: Otherwise:
12529: This indicates a call from the content generation phase of the request.
12530: - returns the entire contents of the file or -1.
12531:
12532: (b) files in /res
12533: - returns the entire contents of a file or -1;
12534: it properly subscribes to and replicates the file if neccessary.
12535:
12536:
12537: =item *
12538:
12539: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
12540: reference
12541:
12542: returns either a stat() list of data about the file or an empty list
12543: if the file doesn't exist or couldn't find out about it (connection
12544: problems or user unknown)
12545:
12546: =item *
12547:
12548: filelocation($dir,$file) : returns file system location of a file
12549: based on URI; meant to be "fairly clean" absolute reference, $dir is a
12550: directory that relative $file lookups are to looked in ($dir of /a/dir
12551: and a file of ../bob will become /a/bob)
12552:
12553: =item *
12554:
12555: hreflocation($dir,$file) : returns file system location or a URL; same as
12556: filelocation except for hrefs
12557:
12558: =item *
12559:
12560: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
12561:
12562: =back
12563:
12564: =head2 Usererfile file routines (/uploaded*)
12565:
12566: =over 4
12567:
12568: =item *
12569:
12570: userfileupload(): main rotine for putting a file in a user or course's
12571: filespace, arguments are,
12572:
12573: formname - required - this is the name of the element in $env where the
12574: filename, and the contents of the file to create/modifed exist
12575: the filename is in $env{'form.'.$formname.'.filename'} and the
12576: contents of the file is located in $env{'form.'.$formname}
12577: context - if coursedoc, store the file in the course of the active role
12578: of the current user;
12579: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
12580: if 'canceloverwrite': delete file in tmp/overwrites directory
12581: subdir - required - subdirectory to put the file in under ../userfiles/
12582: if undefined, it will be placed in "unknown"
12583:
12584: (This routine calls clean_filename() to remove any dangerous
12585: characters from the filename, and then calls finuserfileupload() to
12586: complete the transaction)
12587:
12588: returns either the url of the uploaded file (/uploaded/....) if successful
12589: and /adm/notfound.html if unsuccessful
12590:
12591: =item *
12592:
12593: clean_filename(): routine for cleaing a filename up for storage in
12594: userfile space, argument is:
12595:
12596: filename - proposed filename
12597:
12598: returns: the new clean filename
12599:
12600: =item *
12601:
12602: finishuserfileupload(): routine that creates and sends the file to
12603: userspace, probably shouldn't be called directly
12604:
12605: docuname: username or courseid of destination for the file
12606: docudom: domain of user/course of destination for the file
12607: formname: same as for userfileupload()
12608: fname: filename (including subdirectories) for the file
12609: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
12610: allfiles: reference to hash used to store objects found by parser
12611: codebase: reference to hash used for codebases of java objects found by parser
12612: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
12613: thumbheight: height (pixels) of thumbnail to be created for uploaded image
12614: resizewidth: width to be used to resize image using resizeImage from ImageMagick
12615: resizeheight: height to be used to resize image using resizeImage from ImageMagick
12616: context: if 'overwrite', will move the uploaded file from its temporary location to
12617: userfiles to facilitate overwriting a previously uploaded file with same name.
12618: mimetype: reference to scalar to accommodate mime type determined
12619: from File::MMagic if $parser = parse.
12620:
12621: returns either the url of the uploaded file (/uploaded/....) if successful
12622: and /adm/notfound.html if unsuccessful (or an error message if context
12623: was 'overwrite').
12624:
12625:
12626: =item *
12627:
12628: renameuserfile(): renames an existing userfile to a new name
12629:
12630: Args:
12631: docuname: username or courseid of destination for the file
12632: docudom: domain of user/course of destination for the file
12633: old: current file name (including any subdirs under userfiles)
12634: new: desired file name (including any subdirs under userfiles)
12635:
12636: =item *
12637:
12638: mkdiruserfile(): creates a directory is a userfiles dir
12639:
12640: Args:
12641: docuname: username or courseid of destination for the file
12642: docudom: domain of user/course of destination for the file
12643: dir: dir to create (including any subdirs under userfiles)
12644:
12645: =item *
12646:
12647: removeuserfile(): removes a file that exists in userfiles
12648:
12649: Args:
12650: docuname: username or courseid of destination for the file
12651: docudom: domain of user/course of destination for the file
12652: fname: filname to delete (including any subdirs under userfiles)
12653:
12654: =item *
12655:
12656: removeuploadedurl(): convience function for removeuserfile()
12657:
12658: Args:
12659: url: a full /uploaded/... url to delete
12660:
12661: =item *
12662:
12663: get_portfile_permissions():
12664: Args:
12665: domain: domain of user or course contain the portfolio files
12666: user: name of user or num of course contain the portfolio files
12667: Returns:
12668: hashref of a dump of the proper file_permissions.db
12669:
12670:
12671: =item *
12672:
12673: get_access_controls():
12674:
12675: Args:
12676: current_permissions: the hash ref returned from get_portfile_permissions()
12677: group: (optional) the group you want the files associated with
12678: file: (optional) the file you want access info on
12679:
12680: Returns:
12681: a hash (keys are file names) of hashes containing
12682: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
12683: values are XML containing access control settings (see below)
12684:
12685: Internal notes:
12686:
12687: access controls are stored in file_permissions.db as key=value pairs.
12688: key -> path to file/file_name\0uniqueID:scope_end_start
12689: where scope -> public,guest,course,group,domains or users.
12690: end -> UNIX time for end of access (0 -> no end date)
12691: start -> UNIX time for start of access
12692:
12693: value -> XML description of access control
12694: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
12695: <start></start>
12696: <end></end>
12697:
12698: <password></password> for scope type = guest
12699:
12700: <domain></domain> for scope type = course or group
12701: <number></number>
12702: <roles id="">
12703: <role></role>
12704: <access></access>
12705: <section></section>
12706: <group></group>
12707: </roles>
12708:
12709: <dom></dom> for scope type = domains
12710:
12711: <users> for scope type = users
12712: <user>
12713: <uname></uname>
12714: <udom></udom>
12715: </user>
12716: </users>
12717: </scope>
12718:
12719: Access data is also aggregated for each file in an additional key=value pair:
12720: key -> path to file/file_name\0accesscontrol
12721: value -> reference to hash
12722: hash contains key = value pairs
12723: where key = uniqueID:scope_end_start
12724: value = UNIX time record was last updated
12725:
12726: Used to improve speed of look-ups of access controls for each file.
12727:
12728: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
12729:
12730: modify_access_controls():
12731:
12732: Modifies access controls for a portfolio file
12733: Args
12734: 1. file name
12735: 2. reference to hash of required changes,
12736: 3. domain
12737: 4. username
12738: where domain,username are the domain of the portfolio owner
12739: (either a user or a course)
12740:
12741: Returns:
12742: 1. result of additions or updates ('ok' or 'error', with error message).
12743: 2. result of deletions ('ok' or 'error', with error message).
12744: 3. reference to hash of any new or updated access controls.
12745: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
12746: key = integer (inbound ID)
12747: value = uniqueID
12748:
12749: =back
12750:
12751: =head2 HTTP Helper Routines
12752:
12753: =over 4
12754:
12755: =item *
12756:
12757: escape() : unpack non-word characters into CGI-compatible hex codes
12758:
12759: =item *
12760:
12761: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
12762:
12763: =back
12764:
12765: =head1 PRIVATE SUBROUTINES
12766:
12767: =head2 Underlying communication routines (Shouldn't call)
12768:
12769: =over 4
12770:
12771: =item *
12772:
12773: subreply() : tries to pass a message to lonc, returns con_lost if incapable
12774:
12775: =item *
12776:
12777: reply() : uses subreply to send a message to remote machine, logs all failures
12778:
12779: =item *
12780:
12781: critical() : passes a critical message to another server; if cannot
12782: get through then place message in connection buffer directory and
12783: returns con_delayed, if incapable of saving message, returns
12784: con_failed
12785:
12786: =item *
12787:
12788: reconlonc() : tries to reconnect lonc client processes.
12789:
12790: =back
12791:
12792: =head2 Resource Access Logging
12793:
12794: =over 4
12795:
12796: =item *
12797:
12798: flushcourselogs() : flush (save) buffer logs and access logs
12799:
12800: =item *
12801:
12802: courselog($what) : save message for course in hash
12803:
12804: =item *
12805:
12806: courseacclog($what) : save message for course using &courselog(). Perform
12807: special processing for specific resource types (problems, exams, quizzes, etc).
12808:
12809: =item *
12810:
12811: goodbye() : flush course logs and log shutting down; it is called in srm.conf
12812: as a PerlChildExitHandler
12813:
12814: =back
12815:
12816: =head2 Other
12817:
12818: =over 4
12819:
12820: =item *
12821:
12822: symblist($mapname,%newhash) : update symbolic storage links
12823:
12824: =back
12825:
12826: =cut
12827:
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