File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.1232:
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Wed Jul 31 17:37:18 2013 UTC (10 years, 11 months ago) by
raeburn
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- In &EXT(), check $qualifier is null, when retrieving: &EXT("resource.$space")
$space = title, map or filename, in case this is a multi-part problem
with a part ID matching $space.
- Add two additional &EXT() items -- resource.maptitle, resource.visibleparts
(a) return title (in Course) and (b) comma-separated list of parts available to
current user, respectively.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1232 2013/07/31 17:37:18 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $apache
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$name,$id) = @_;
360: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
361: return $response;
362: }
363:
364: # -------------------------------------------------- Non-critical communication
365: sub subreply {
366: my ($cmd,$server)=@_;
367: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
368: #
369: # With loncnew process trimming, there's a timing hole between lonc server
370: # process exit and the master server picking up the listen on the AF_UNIX
371: # socket. In that time interval, a lock file will exist:
372:
373: my $lockfile=$peerfile.".lock";
374: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
375: sleep(1);
376: }
377: # At this point, either a loncnew parent is listening or an old lonc
378: # or loncnew child is listening so we can connect or everything's dead.
379: #
380: # We'll give the connection a few tries before abandoning it. If
381: # connection is not possible, we'll con_lost back to the client.
382: #
383: my $client;
384: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
385: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
386: Type => SOCK_STREAM,
387: Timeout => 10);
388: if ($client) {
389: last; # Connected!
390: } else {
391: &create_connection(&hostname($server),$server);
392: }
393: sleep(1); # Try again later if failed connection.
394: }
395: my $answer;
396: if ($client) {
397: print $client "sethost:$server:$cmd\n";
398: $answer=<$client>;
399: if (!$answer) { $answer="con_lost"; }
400: chomp($answer);
401: } else {
402: $answer = 'con_lost'; # Failed connection.
403: }
404: return $answer;
405: }
406:
407: sub reply {
408: my ($cmd,$server)=@_;
409: unless (defined(&hostname($server))) { return 'no_such_host'; }
410: my $answer=subreply($cmd,$server);
411: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
412: &logthis("<font color=\"blue\">WARNING:".
413: " $cmd to $server returned $answer</font>");
414: }
415: return $answer;
416: }
417:
418: # ----------------------------------------------------------- Send USR1 to lonc
419:
420: sub reconlonc {
421: my ($lonid) = @_;
422: my $hostname = &hostname($lonid);
423: if ($lonid) {
424: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
425: if ($hostname && -e $peerfile) {
426: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
427: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
428: Type => SOCK_STREAM,
429: Timeout => 10);
430: if ($client) {
431: print $client ("reset_retries\n");
432: my $answer=<$client>;
433: #reset just this one.
434: }
435: }
436: return;
437: }
438:
439: &logthis("Trying to reconnect lonc");
440: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
441: if (open(my $fh,"<$loncfile")) {
442: my $loncpid=<$fh>;
443: chomp($loncpid);
444: if (kill 0 => $loncpid) {
445: &logthis("lonc at pid $loncpid responding, sending USR1");
446: kill USR1 => $loncpid;
447: sleep 1;
448: } else {
449: &logthis(
450: "<font color=\"blue\">WARNING:".
451: " lonc at pid $loncpid not responding, giving up</font>");
452: }
453: } else {
454: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
455: }
456: }
457:
458: # ------------------------------------------------------ Critical communication
459:
460: sub critical {
461: my ($cmd,$server)=@_;
462: unless (&hostname($server)) {
463: &logthis("<font color=\"blue\">WARNING:".
464: " Critical message to unknown server ($server)</font>");
465: return 'no_such_host';
466: }
467: my $answer=reply($cmd,$server);
468: if ($answer eq 'con_lost') {
469: &reconlonc("$perlvar{'lonSockDir'}/$server");
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: my $now=time;
473: my $middlename=$cmd;
474: $middlename=substr($middlename,0,16);
475: $middlename=~s/\W//g;
476: my $dfilename=
477: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
478: $dumpcount++;
479: {
480: my $dfh;
481: if (open($dfh,">$dfilename")) {
482: print $dfh "$cmd\n";
483: close($dfh);
484: }
485: }
486: sleep 2;
487: my $wcmd='';
488: {
489: my $dfh;
490: if (open($dfh,"<$dfilename")) {
491: $wcmd=<$dfh>;
492: close($dfh);
493: }
494: }
495: chomp($wcmd);
496: if ($wcmd eq $cmd) {
497: &logthis("<font color=\"blue\">WARNING: ".
498: "Connection buffer $dfilename: $cmd</font>");
499: &logperm("D:$server:$cmd");
500: return 'con_delayed';
501: } else {
502: &logthis("<font color=\"red\">CRITICAL:"
503: ." Critical connection failed: $server $cmd</font>");
504: &logperm("F:$server:$cmd");
505: return 'con_failed';
506: }
507: }
508: }
509: return $answer;
510: }
511:
512: # ------------------------------------------- check if return value is an error
513:
514: sub error {
515: my ($result) = @_;
516: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
517: if ($2 == 2) { return undef; }
518: return $1;
519: }
520: return undef;
521: }
522:
523: sub convert_and_load_session_env {
524: my ($lonidsdir,$handle)=@_;
525: my @profile;
526: {
527: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
528: if (!$opened) {
529: return 0;
530: }
531: flock($idf,LOCK_SH);
532: @profile=<$idf>;
533: close($idf);
534: }
535: my %temp_env;
536: foreach my $line (@profile) {
537: if ($line !~ m/=/) {
538: return 0;
539: }
540: chomp($line);
541: my ($envname,$envvalue)=split(/=/,$line,2);
542: $temp_env{&unescape($envname)} = &unescape($envvalue);
543: }
544: unlink("$lonidsdir/$handle.id");
545: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
546: 0640)) {
547: %disk_env = %temp_env;
548: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
549: untie(%disk_env);
550: }
551: return 1;
552: }
553:
554: # ------------------------------------------- Transfer profile into environment
555: my $env_loaded;
556: sub transfer_profile_to_env {
557: my ($lonidsdir,$handle,$force_transfer) = @_;
558: if (!$force_transfer && $env_loaded) { return; }
559:
560: if (!defined($lonidsdir)) {
561: $lonidsdir = $perlvar{'lonIDsDir'};
562: }
563: if (!defined($handle)) {
564: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
565: }
566:
567: my $convert;
568: {
569: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
570: if (!$opened) {
571: return;
572: }
573: flock($idf,LOCK_SH);
574: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
575: &GDBM_READER(),0640)) {
576: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
577: untie(%disk_env);
578: } else {
579: $convert = 1;
580: }
581: }
582: if ($convert) {
583: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
584: &logthis("Failed to load session, or convert session.");
585: }
586: }
587:
588: my %remove;
589: while ( my $envname = each(%env) ) {
590: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
591: if ($time < time-300) {
592: $remove{$key}++;
593: }
594: }
595: }
596:
597: $env{'user.environment'} = "$lonidsdir/$handle.id";
598: $env_loaded=1;
599: foreach my $expired_key (keys(%remove)) {
600: &delenv($expired_key);
601: }
602: }
603:
604: # ---------------------------------------------------- Check for valid session
605: sub check_for_valid_session {
606: my ($r,$name) = @_;
607: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
608: if ($name eq '') {
609: $name = 'lonID';
610: }
611: my $lonid=$cookies{$name};
612: return undef if (!$lonid);
613:
614: my $handle=&LONCAPA::clean_handle($lonid->value);
615: my $lonidsdir;
616: if ($name eq 'lonDAV') {
617: $lonidsdir=$r->dir_config('lonDAVsessDir');
618: } else {
619: $lonidsdir=$r->dir_config('lonIDsDir');
620: }
621: return undef if (!-e "$lonidsdir/$handle.id");
622:
623: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
624: return undef if (!$opened);
625:
626: flock($idf,LOCK_SH);
627: my %disk_env;
628: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
629: &GDBM_READER(),0640)) {
630: return undef;
631: }
632:
633: if (!defined($disk_env{'user.name'})
634: || !defined($disk_env{'user.domain'})) {
635: return undef;
636: }
637: if (($r->user() eq '') && ($apache >= 2.4)) {
638: if ($disk_env{'user.domain'} eq $r->dir_config('lonDefDomain')) {
639: $r->user($disk_env{'user.name'});
640: } else {
641: $r->user($disk_env{'user.name'}.':'.$disk_env{'user.domain'});
642: }
643: }
644: return $handle;
645: }
646:
647: sub timed_flock {
648: my ($file,$lock_type) = @_;
649: my $failed=0;
650: eval {
651: local $SIG{__DIE__}='DEFAULT';
652: local $SIG{ALRM}=sub {
653: $failed=1;
654: die("failed lock");
655: };
656: alarm(13);
657: flock($file,$lock_type);
658: alarm(0);
659: };
660: if ($failed) {
661: return undef;
662: } else {
663: return 1;
664: }
665: }
666:
667: # ---------------------------------------------------------- Append Environment
668:
669: sub appenv {
670: my ($newenv,$roles) = @_;
671: if (ref($newenv) eq 'HASH') {
672: foreach my $key (keys(%{$newenv})) {
673: my $refused = 0;
674: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
675: $refused = 1;
676: if (ref($roles) eq 'ARRAY') {
677: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
678: if (grep(/^\Q$role\E$/,@{$roles})) {
679: $refused = 0;
680: }
681: }
682: }
683: if ($refused) {
684: &logthis("<font color=\"blue\">WARNING: ".
685: "Attempt to modify environment ".$key." to ".$newenv->{$key}
686: .'</font>');
687: delete($newenv->{$key});
688: } else {
689: $env{$key}=$newenv->{$key};
690: }
691: }
692: my $opened = open(my $env_file,'+<',$env{'user.environment'});
693: if ($opened
694: && &timed_flock($env_file,LOCK_EX)
695: &&
696: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
697: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
698: while (my ($key,$value) = each(%{$newenv})) {
699: $disk_env{$key} = $value;
700: }
701: untie(%disk_env);
702: }
703: }
704: return 'ok';
705: }
706: # ----------------------------------------------------- Delete from Environment
707:
708: sub delenv {
709: my ($delthis,$regexp,$roles) = @_;
710: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
711: my $refused = 1;
712: if (ref($roles) eq 'ARRAY') {
713: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
714: if (grep(/^\Q$role\E$/,@{$roles})) {
715: $refused = 0;
716: }
717: }
718: if ($refused) {
719: &logthis("<font color=\"blue\">WARNING: ".
720: "Attempt to delete from environment ".$delthis);
721: return 'error';
722: }
723: }
724: my $opened = open(my $env_file,'+<',$env{'user.environment'});
725: if ($opened
726: && &timed_flock($env_file,LOCK_EX)
727: &&
728: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
729: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
730: foreach my $key (keys(%disk_env)) {
731: if ($regexp) {
732: if ($key=~/^$delthis/) {
733: delete($env{$key});
734: delete($disk_env{$key});
735: }
736: } else {
737: if ($key=~/^\Q$delthis\E/) {
738: delete($env{$key});
739: delete($disk_env{$key});
740: }
741: }
742: }
743: untie(%disk_env);
744: }
745: return 'ok';
746: }
747:
748: sub get_env_multiple {
749: my ($name) = @_;
750: my @values;
751: if (defined($env{$name})) {
752: # exists is it an array
753: if (ref($env{$name})) {
754: @values=@{ $env{$name} };
755: } else {
756: $values[0]=$env{$name};
757: }
758: }
759: return(@values);
760: }
761:
762: # ------------------------------------------------------------------- Locking
763:
764: sub set_lock {
765: my ($text)=@_;
766: $locknum++;
767: my $id=$$.'-'.$locknum;
768: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
769: 'session.lock.'.$id => $text});
770: return $id;
771: }
772:
773: sub get_locks {
774: my $num=0;
775: my %texts=();
776: foreach my $lock (split(/\,/,$env{'session.locks'})) {
777: if ($lock=~/\w/) {
778: $num++;
779: $texts{$lock}=$env{'session.lock.'.$lock};
780: }
781: }
782: return ($num,%texts);
783: }
784:
785: sub remove_lock {
786: my ($id)=@_;
787: my $newlocks='';
788: foreach my $lock (split(/\,/,$env{'session.locks'})) {
789: if (($lock=~/\w/) && ($lock ne $id)) {
790: $newlocks.=','.$lock;
791: }
792: }
793: &appenv({'session.locks' => $newlocks});
794: &delenv('session.lock.'.$id);
795: }
796:
797: sub remove_all_locks {
798: my $activelocks=$env{'session.locks'};
799: foreach my $lock (split(/\,/,$env{'session.locks'})) {
800: if ($lock=~/\w/) {
801: &remove_lock($lock);
802: }
803: }
804: }
805:
806:
807: # ------------------------------------------ Find out current server userload
808: sub userload {
809: my $numusers=0;
810: {
811: opendir(LONIDS,$perlvar{'lonIDsDir'});
812: my $filename;
813: my $curtime=time;
814: while ($filename=readdir(LONIDS)) {
815: next if ($filename eq '.' || $filename eq '..');
816: next if ($filename =~ /publicuser_\d+\.id/);
817: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
818: if ($curtime-$mtime < 1800) { $numusers++; }
819: }
820: closedir(LONIDS);
821: }
822: my $userloadpercent=0;
823: my $maxuserload=$perlvar{'lonUserLoadLim'};
824: if ($maxuserload) {
825: $userloadpercent=100*$numusers/$maxuserload;
826: }
827: $userloadpercent=sprintf("%.2f",$userloadpercent);
828: return $userloadpercent;
829: }
830:
831: # ------------------------------ Find server with least workload from spare.tab
832:
833: sub spareserver {
834: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
835: my $spare_server;
836: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
837: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
838: : $userloadpercent;
839: my ($uint_dom,$remotesessions);
840: if (($udom ne '') && (&domain($udom) ne '')) {
841: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
842: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
843: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
844: $remotesessions = $udomdefaults{'remotesessions'};
845: }
846: my $spareshash = &this_host_spares($udom);
847: if (ref($spareshash) eq 'HASH') {
848: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
849: foreach my $try_server (@{ $spareshash->{'primary'} }) {
850: if ($uint_dom) {
851: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
852: $try_server));
853: }
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858:
859: my $found_server = ($spare_server ne '' && $lowest_load < 100);
860:
861: if (!$found_server) {
862: if (ref($spareshash->{'default'}) eq 'ARRAY') {
863: foreach my $try_server (@{ $spareshash->{'default'} }) {
864: if ($uint_dom) {
865: next unless (&spare_can_host($udom,$uint_dom,
866: $remotesessions,$try_server));
867: }
868: ($spare_server, $lowest_load) =
869: &compare_server_load($try_server, $spare_server, $lowest_load);
870: }
871: }
872: }
873: }
874:
875: if (!$want_server_name) {
876: my $protocol = 'http';
877: if ($protocol{$spare_server} eq 'https') {
878: $protocol = $protocol{$spare_server};
879: }
880: if (defined($spare_server)) {
881: my $hostname = &hostname($spare_server);
882: if (defined($hostname)) {
883: $spare_server = $protocol.'://'.$hostname;
884: }
885: }
886: }
887: return $spare_server;
888: }
889:
890: sub compare_server_load {
891: my ($try_server, $spare_server, $lowest_load) = @_;
892:
893: my $loadans = &reply('load', $try_server);
894: my $userloadans = &reply('userload',$try_server);
895:
896: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
897: return ($spare_server, $lowest_load); #didn't get a number from the server
898: }
899:
900: my $load;
901: if ($loadans =~ /\d/) {
902: if ($userloadans =~ /\d/) {
903: #both are numbers, pick the bigger one
904: $load = ($loadans > $userloadans) ? $loadans
905: : $userloadans;
906: } else {
907: $load = $loadans;
908: }
909: } else {
910: $load = $userloadans;
911: }
912:
913: if (($load =~ /\d/) && ($load < $lowest_load)) {
914: $spare_server = $try_server;
915: $lowest_load = $load;
916: }
917: return ($spare_server,$lowest_load);
918: }
919:
920: # --------------------------- ask offload servers if user already has a session
921: sub find_existing_session {
922: my ($udom,$uname) = @_;
923: my $spareshash = &this_host_spares($udom);
924: if (ref($spareshash) eq 'HASH') {
925: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
926: foreach my $try_server (@{ $spareshash->{'primary'} }) {
927: return $try_server if (&has_user_session($try_server, $udom, $uname));
928: }
929: }
930: if (ref($spareshash->{'default'}) eq 'ARRAY') {
931: foreach my $try_server (@{ $spareshash->{'default'} }) {
932: return $try_server if (&has_user_session($try_server, $udom, $uname));
933: }
934: }
935: }
936: return;
937: }
938:
939: # -------------------------------- ask if server already has a session for user
940: sub has_user_session {
941: my ($lonid,$udom,$uname) = @_;
942: my $result = &reply(join(':','userhassession',
943: map {&escape($_)} ($udom,$uname)),$lonid);
944: return 1 if ($result eq 'ok');
945:
946: return 0;
947: }
948:
949: # --------- determine least loaded server in a user's domain which allows login
950:
951: sub choose_server {
952: my ($udom,$checkloginvia) = @_;
953: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
954: my %servers = &get_servers($udom);
955: my $lowest_load = 30000;
956: my ($login_host,$hostname,$portal_path,$isredirect);
957: foreach my $lonhost (keys(%servers)) {
958: my $loginvia;
959: if ($checkloginvia) {
960: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
961: if ($loginvia) {
962: my ($server,$path) = split(/:/,$loginvia);
963: ($login_host, $lowest_load) =
964: &compare_server_load($server, $login_host, $lowest_load);
965: if ($login_host eq $server) {
966: $portal_path = $path;
967: $isredirect = 1;
968: }
969: } else {
970: ($login_host, $lowest_load) =
971: &compare_server_load($lonhost, $login_host, $lowest_load);
972: if ($login_host eq $lonhost) {
973: $portal_path = '';
974: $isredirect = '';
975: }
976: }
977: } else {
978: ($login_host, $lowest_load) =
979: &compare_server_load($lonhost, $login_host, $lowest_load);
980: }
981: }
982: if ($login_host ne '') {
983: $hostname = &hostname($login_host);
984: }
985: return ($login_host,$hostname,$portal_path,$isredirect);
986: }
987:
988: # --------------------------------------------- Try to change a user's password
989:
990: sub changepass {
991: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
992: $currentpass = &escape($currentpass);
993: $newpass = &escape($newpass);
994: my $lonhost = $perlvar{'lonHostID'};
995: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
996: $server);
997: if (! $answer) {
998: &logthis("No reply on password change request to $server ".
999: "by $uname in domain $udom.");
1000: } elsif ($answer =~ "^ok") {
1001: &logthis("$uname in $udom successfully changed their password ".
1002: "on $server.");
1003: } elsif ($answer =~ "^pwchange_failure") {
1004: &logthis("$uname in $udom was unable to change their password ".
1005: "on $server. The action was blocked by either lcpasswd ".
1006: "or pwchange");
1007: } elsif ($answer =~ "^non_authorized") {
1008: &logthis("$uname in $udom did not get their password correct when ".
1009: "attempting to change it on $server.");
1010: } elsif ($answer =~ "^auth_mode_error") {
1011: &logthis("$uname in $udom attempted to change their password despite ".
1012: "not being locally or internally authenticated on $server.");
1013: } elsif ($answer =~ "^unknown_user") {
1014: &logthis("$uname in $udom attempted to change their password ".
1015: "on $server but were unable to because $server is not ".
1016: "their home server.");
1017: } elsif ($answer =~ "^refused") {
1018: &logthis("$server refused to change $uname in $udom password because ".
1019: "it was sent an unencrypted request to change the password.");
1020: } elsif ($answer =~ "invalid_client") {
1021: &logthis("$server refused to change $uname in $udom password because ".
1022: "it was a reset by e-mail originating from an invalid server.");
1023: }
1024: return $answer;
1025: }
1026:
1027: # ----------------------- Try to determine user's current authentication scheme
1028:
1029: sub queryauthenticate {
1030: my ($uname,$udom)=@_;
1031: my $uhome=&homeserver($uname,$udom);
1032: if (!$uhome) {
1033: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1034: return 'no_host';
1035: }
1036: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1037: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1038: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1039: }
1040: return $answer;
1041: }
1042:
1043: # --------- Try to authenticate user from domain's lib servers (first this one)
1044:
1045: sub authenticate {
1046: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1047: $upass=&escape($upass);
1048: $uname= &LONCAPA::clean_username($uname);
1049: my $uhome=&homeserver($uname,$udom,1);
1050: my $newhome;
1051: if ((!$uhome) || ($uhome eq 'no_host')) {
1052: # Maybe the machine was offline and only re-appeared again recently?
1053: &reconlonc();
1054: # One more
1055: $uhome=&homeserver($uname,$udom,1);
1056: if (($uhome eq 'no_host') && $checkdefauth) {
1057: if (defined(&domain($udom,'primary'))) {
1058: $newhome=&domain($udom,'primary');
1059: }
1060: if ($newhome ne '') {
1061: $uhome = $newhome;
1062: }
1063: }
1064: if ((!$uhome) || ($uhome eq 'no_host')) {
1065: &logthis("User $uname at $udom is unknown in authenticate");
1066: return 'no_host';
1067: }
1068: }
1069: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1070: if ($answer eq 'authorized') {
1071: if ($newhome) {
1072: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1073: return 'no_account_on_host';
1074: } else {
1075: &logthis("User $uname at $udom authorized by $uhome");
1076: return $uhome;
1077: }
1078: }
1079: if ($answer eq 'non_authorized') {
1080: &logthis("User $uname at $udom rejected by $uhome");
1081: return 'no_host';
1082: }
1083: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1084: return 'no_host';
1085: }
1086:
1087: sub can_host_session {
1088: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1089: my $canhost = 1;
1090: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1091: if (ref($remotesessions) eq 'HASH') {
1092: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1093: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1094: $canhost = 0;
1095: } else {
1096: $canhost = 1;
1097: }
1098: }
1099: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1100: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1101: $canhost = 1;
1102: } else {
1103: $canhost = 0;
1104: }
1105: }
1106: if ($canhost) {
1107: if ($remotesessions->{'version'} ne '') {
1108: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1109: if ($reqmajor ne '' && $reqminor ne '') {
1110: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1111: my $major = $1;
1112: my $minor = $2;
1113: if (($major < $reqmajor ) ||
1114: (($major == $reqmajor) && ($minor < $reqminor))) {
1115: $canhost = 0;
1116: }
1117: } else {
1118: $canhost = 0;
1119: }
1120: }
1121: }
1122: }
1123: }
1124: if ($canhost) {
1125: if (ref($hostedsessions) eq 'HASH') {
1126: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1127: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1128: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1129: if (($uint_dom ne '') &&
1130: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1131: $canhost = 0;
1132: } else {
1133: $canhost = 1;
1134: }
1135: }
1136: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1137: if (($uint_dom ne '') &&
1138: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1139: $canhost = 1;
1140: } else {
1141: $canhost = 0;
1142: }
1143: }
1144: }
1145: }
1146: return $canhost;
1147: }
1148:
1149: sub spare_can_host {
1150: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1151: my $canhost=1;
1152: my @intdoms;
1153: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1154: if (ref($internet_names) eq 'ARRAY') {
1155: @intdoms = @{$internet_names};
1156: }
1157: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1158: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1159: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1160: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1161: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1162: $canhost = &can_host_session($udom,$try_server,$remoterev,
1163: $remotesessions,
1164: $defdomdefaults{'hostedsessions'});
1165: }
1166: return $canhost;
1167: }
1168:
1169: sub this_host_spares {
1170: my ($dom) = @_;
1171: my ($dom_in_use,$lonhost_in_use,$result);
1172: my @hosts = ¤t_machine_ids();
1173: foreach my $lonhost (@hosts) {
1174: if (&host_domain($lonhost) eq $dom) {
1175: $dom_in_use = $dom;
1176: $lonhost_in_use = $lonhost;
1177: last;
1178: }
1179: }
1180: if ($dom_in_use ne '') {
1181: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1182: }
1183: if (ref($result) ne 'HASH') {
1184: $lonhost_in_use = $perlvar{'lonHostID'};
1185: $dom_in_use = &host_domain($lonhost_in_use);
1186: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1187: if (ref($result) ne 'HASH') {
1188: $result = \%spareid;
1189: }
1190: }
1191: return $result;
1192: }
1193:
1194: sub spares_for_offload {
1195: my ($dom_in_use,$lonhost_in_use) = @_;
1196: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1197: if (defined($cached)) {
1198: return $result;
1199: } else {
1200: my $cachetime = 60*60*24;
1201: my %domconfig =
1202: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1203: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1204: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1205: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1206: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1207: }
1208: }
1209: }
1210: }
1211: return;
1212: }
1213:
1214: sub get_lonbalancer_config {
1215: my ($servers) = @_;
1216: my ($currbalancer,$currtargets);
1217: if (ref($servers) eq 'HASH') {
1218: foreach my $server (keys(%{$servers})) {
1219: my %what = (
1220: spareid => 1,
1221: perlvar => 1,
1222: );
1223: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1224: if ($result eq 'ok') {
1225: if (ref($returnhash) eq 'HASH') {
1226: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1227: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1228: $currbalancer = $server;
1229: $currtargets = {};
1230: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1231: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1232: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1233: }
1234: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1235: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1236: }
1237: }
1238: last;
1239: }
1240: }
1241: }
1242: }
1243: }
1244: }
1245: return ($currbalancer,$currtargets);
1246: }
1247:
1248: sub check_loadbalancing {
1249: my ($uname,$udom) = @_;
1250: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1251: $rule_in_effect,$offloadto,$otherserver);
1252: my $lonhost = $perlvar{'lonHostID'};
1253: my @hosts = ¤t_machine_ids();
1254: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1255: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1256: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1257: my $serverhomedom = &host_domain($lonhost);
1258:
1259: my $cachetime = 60*60*24;
1260:
1261: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1262: $dom_in_use = $udom;
1263: $homeintdom = 1;
1264: } else {
1265: $dom_in_use = $serverhomedom;
1266: }
1267: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1268: unless (defined($cached)) {
1269: my %domconfig =
1270: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1271: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1272: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1273: }
1274: }
1275: if (ref($result) eq 'HASH') {
1276: ($is_balancer,$currtargets,$currrules) =
1277: &check_balancer_result($result,@hosts);
1278: if ($is_balancer) {
1279: if (ref($currrules) eq 'HASH') {
1280: if ($homeintdom) {
1281: if ($uname ne '') {
1282: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1283: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1284: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1285: $rule_in_effect = $currrules->{'_LC_author'};
1286: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1287: $rule_in_effect = $currrules->{'_LC_adv'}
1288: }
1289: }
1290: if ($rule_in_effect eq '') {
1291: my %userenv = &userenvironment($udom,$uname,'inststatus');
1292: if ($userenv{'inststatus'} ne '') {
1293: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1294: my ($othertitle,$usertypes,$types) =
1295: &Apache::loncommon::sorted_inst_types($udom);
1296: if (ref($types) eq 'ARRAY') {
1297: foreach my $type (@{$types}) {
1298: if (grep(/^\Q$type\E$/,@statuses)) {
1299: if (exists($currrules->{$type})) {
1300: $rule_in_effect = $currrules->{$type};
1301: }
1302: }
1303: }
1304: }
1305: } else {
1306: if (exists($currrules->{'default'})) {
1307: $rule_in_effect = $currrules->{'default'};
1308: }
1309: }
1310: }
1311: } else {
1312: if (exists($currrules->{'default'})) {
1313: $rule_in_effect = $currrules->{'default'};
1314: }
1315: }
1316: } else {
1317: if ($currrules->{'_LC_external'} ne '') {
1318: $rule_in_effect = $currrules->{'_LC_external'};
1319: }
1320: }
1321: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1322: $uname,$udom);
1323: }
1324: }
1325: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1326: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1327: unless (defined($cached)) {
1328: my %domconfig =
1329: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1330: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1331: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1332: }
1333: }
1334: if (ref($result) eq 'HASH') {
1335: ($is_balancer,$currtargets,$currrules) =
1336: &check_balancer_result($result,@hosts);
1337: if ($is_balancer) {
1338: if (ref($currrules) eq 'HASH') {
1339: if ($currrules->{'_LC_internetdom'} ne '') {
1340: $rule_in_effect = $currrules->{'_LC_internetdom'};
1341: }
1342: }
1343: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1344: $uname,$udom);
1345: }
1346: } else {
1347: if ($perlvar{'lonBalancer'} eq 'yes') {
1348: $is_balancer = 1;
1349: $offloadto = &this_host_spares($dom_in_use);
1350: }
1351: }
1352: } else {
1353: if ($perlvar{'lonBalancer'} eq 'yes') {
1354: $is_balancer = 1;
1355: $offloadto = &this_host_spares($dom_in_use);
1356: }
1357: }
1358: if ($is_balancer) {
1359: my $lowest_load = 30000;
1360: if (ref($offloadto) eq 'HASH') {
1361: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1362: foreach my $try_server (@{$offloadto->{'primary'}}) {
1363: ($otherserver,$lowest_load) =
1364: &compare_server_load($try_server,$otherserver,$lowest_load);
1365: }
1366: }
1367: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1368:
1369: if (!$found_server) {
1370: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1371: foreach my $try_server (@{$offloadto->{'default'}}) {
1372: ($otherserver,$lowest_load) =
1373: &compare_server_load($try_server,$otherserver,$lowest_load);
1374: }
1375: }
1376: }
1377: } elsif (ref($offloadto) eq 'ARRAY') {
1378: if (@{$offloadto} == 1) {
1379: $otherserver = $offloadto->[0];
1380: } elsif (@{$offloadto} > 1) {
1381: foreach my $try_server (@{$offloadto}) {
1382: ($otherserver,$lowest_load) =
1383: &compare_server_load($try_server,$otherserver,$lowest_load);
1384: }
1385: }
1386: }
1387: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1388: $is_balancer = 0;
1389: if ($uname ne '' && $udom ne '') {
1390: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1391:
1392: &appenv({'user.loadbalexempt' => $lonhost,
1393: 'user.loadbalcheck.time' => time});
1394: }
1395: }
1396: }
1397: }
1398: return ($is_balancer,$otherserver);
1399: }
1400:
1401: sub check_balancer_result {
1402: my ($result,@hosts) = @_;
1403: my ($is_balancer,$currtargets,$currrules);
1404: if (ref($result) eq 'HASH') {
1405: if ($result->{'lonhost'} ne '') {
1406: my $currbalancer = $result->{'lonhost'};
1407: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1408: $is_balancer = 1;
1409: $currtargets = $result->{'targets'};
1410: $currrules = $result->{'rules'};
1411: }
1412: } else {
1413: foreach my $key (keys(%{$result})) {
1414: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1415: (ref($result->{$key}) eq 'HASH')) {
1416: $is_balancer = 1;
1417: $currrules = $result->{$key}{'rules'};
1418: $currtargets = $result->{$key}{'targets'};
1419: last;
1420: }
1421: }
1422: }
1423: }
1424: return ($is_balancer,$currtargets,$currrules);
1425: }
1426:
1427: sub get_loadbalancer_targets {
1428: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1429: my $offloadto;
1430: if ($rule_in_effect eq 'none') {
1431: return [$perlvar{'lonHostID'}];
1432: } elsif ($rule_in_effect eq '') {
1433: $offloadto = $currtargets;
1434: } else {
1435: if ($rule_in_effect eq 'homeserver') {
1436: my $homeserver = &homeserver($uname,$udom);
1437: if ($homeserver ne 'no_host') {
1438: $offloadto = [$homeserver];
1439: }
1440: } elsif ($rule_in_effect eq 'externalbalancer') {
1441: my %domconfig =
1442: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1443: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1444: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1445: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1446: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1447: }
1448: }
1449: } else {
1450: my %servers = &internet_dom_servers($udom);
1451: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1452: if (&hostname($remotebalancer) ne '') {
1453: $offloadto = [$remotebalancer];
1454: }
1455: }
1456: } elsif (&hostname($rule_in_effect) ne '') {
1457: $offloadto = [$rule_in_effect];
1458: }
1459: }
1460: return $offloadto;
1461: }
1462:
1463: sub internet_dom_servers {
1464: my ($dom) = @_;
1465: my (%uniqservers,%servers);
1466: my $primaryserver = &hostname(&domain($dom,'primary'));
1467: my @machinedoms = &machine_domains($primaryserver);
1468: foreach my $mdom (@machinedoms) {
1469: my %currservers = %servers;
1470: my %server = &get_servers($mdom);
1471: %servers = (%currservers,%server);
1472: }
1473: my %by_hostname;
1474: foreach my $id (keys(%servers)) {
1475: push(@{$by_hostname{$servers{$id}}},$id);
1476: }
1477: foreach my $hostname (sort(keys(%by_hostname))) {
1478: if (@{$by_hostname{$hostname}} > 1) {
1479: my $match = 0;
1480: foreach my $id (@{$by_hostname{$hostname}}) {
1481: if (&host_domain($id) eq $dom) {
1482: $uniqservers{$id} = $hostname;
1483: $match = 1;
1484: }
1485: }
1486: unless ($match) {
1487: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1488: }
1489: } else {
1490: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1491: }
1492: }
1493: return %uniqservers;
1494: }
1495:
1496: # ---------------------- Find the homebase for a user from domain's lib servers
1497:
1498: my %homecache;
1499: sub homeserver {
1500: my ($uname,$udom,$ignoreBadCache)=@_;
1501: my $index="$uname:$udom";
1502:
1503: if (exists($homecache{$index})) { return $homecache{$index}; }
1504:
1505: my %servers = &get_servers($udom,'library');
1506: foreach my $tryserver (keys(%servers)) {
1507: next if ($ignoreBadCache ne 'true' &&
1508: exists($badServerCache{$tryserver}));
1509:
1510: my $answer=reply("home:$udom:$uname",$tryserver);
1511: if ($answer eq 'found') {
1512: delete($badServerCache{$tryserver});
1513: return $homecache{$index}=$tryserver;
1514: } elsif ($answer eq 'no_host') {
1515: $badServerCache{$tryserver}=1;
1516: }
1517: }
1518: return 'no_host';
1519: }
1520:
1521: # ------------------------------------- Find the usernames behind a list of IDs
1522:
1523: sub idget {
1524: my ($udom,@ids)=@_;
1525: my %returnhash=();
1526:
1527: my %servers = &get_servers($udom,'library');
1528: foreach my $tryserver (keys(%servers)) {
1529: my $idlist=join('&',@ids);
1530: $idlist=~tr/A-Z/a-z/;
1531: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1532: my @answer=();
1533: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1534: @answer=split(/\&/,$reply);
1535: } ;
1536: my $i;
1537: for ($i=0;$i<=$#ids;$i++) {
1538: if ($answer[$i]) {
1539: $returnhash{$ids[$i]}=$answer[$i];
1540: }
1541: }
1542: }
1543: return %returnhash;
1544: }
1545:
1546: # ------------------------------------- Find the IDs behind a list of usernames
1547:
1548: sub idrget {
1549: my ($udom,@unames)=@_;
1550: my %returnhash=();
1551: foreach my $uname (@unames) {
1552: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1553: }
1554: return %returnhash;
1555: }
1556:
1557: # ------------------------------- Store away a list of names and associated IDs
1558:
1559: sub idput {
1560: my ($udom,%ids)=@_;
1561: my %servers=();
1562: foreach my $uname (keys(%ids)) {
1563: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1564: my $uhom=&homeserver($uname,$udom);
1565: if ($uhom ne 'no_host') {
1566: my $id=&escape($ids{$uname});
1567: $id=~tr/A-Z/a-z/;
1568: my $esc_unam=&escape($uname);
1569: if ($servers{$uhom}) {
1570: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1571: } else {
1572: $servers{$uhom}=$id.'='.$esc_unam;
1573: }
1574: }
1575: }
1576: foreach my $server (keys(%servers)) {
1577: &critical('idput:'.$udom.':'.$servers{$server},$server);
1578: }
1579: }
1580:
1581: # ---------------------------------------- Delete unwanted IDs from ids.db file
1582:
1583: sub iddel {
1584: my ($udom,$idshashref,$uhome)=@_;
1585: my %result=();
1586: unless (ref($idshashref) eq 'HASH') {
1587: return %result;
1588: }
1589: my %servers=();
1590: while (my ($id,$uname) = each(%{$idshashref})) {
1591: my $uhom;
1592: if ($uhome) {
1593: $uhom = $uhome;
1594: } else {
1595: $uhom=&homeserver($uname,$udom);
1596: }
1597: if ($uhom ne 'no_host') {
1598: if ($servers{$uhom}) {
1599: $servers{$uhom}.='&'.&escape($id);
1600: } else {
1601: $servers{$uhom}=&escape($id);
1602: }
1603: }
1604: }
1605: foreach my $server (keys(%servers)) {
1606: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1607: }
1608: return %result;
1609: }
1610:
1611: # ------------------------------dump from db file owned by domainconfig user
1612: sub dump_dom {
1613: my ($namespace, $udom, $regexp) = @_;
1614:
1615: $udom ||= $env{'user.domain'};
1616:
1617: return () unless $udom;
1618:
1619: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1620: }
1621:
1622: # ------------------------------------------ get items from domain db files
1623:
1624: sub get_dom {
1625: my ($namespace,$storearr,$udom,$uhome)=@_;
1626: my $items='';
1627: foreach my $item (@$storearr) {
1628: $items.=&escape($item).'&';
1629: }
1630: $items=~s/\&$//;
1631: if (!$udom) {
1632: $udom=$env{'user.domain'};
1633: if (defined(&domain($udom,'primary'))) {
1634: $uhome=&domain($udom,'primary');
1635: } else {
1636: undef($uhome);
1637: }
1638: } else {
1639: if (!$uhome) {
1640: if (defined(&domain($udom,'primary'))) {
1641: $uhome=&domain($udom,'primary');
1642: }
1643: }
1644: }
1645: if ($udom && $uhome && ($uhome ne 'no_host')) {
1646: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1647: my %returnhash;
1648: if ($rep eq '' || $rep =~ /^error: 2 /) {
1649: return %returnhash;
1650: }
1651: my @pairs=split(/\&/,$rep);
1652: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1653: return @pairs;
1654: }
1655: my $i=0;
1656: foreach my $item (@$storearr) {
1657: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1658: $i++;
1659: }
1660: return %returnhash;
1661: } else {
1662: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1663: }
1664: }
1665:
1666: # -------------------------------------------- put items in domain db files
1667:
1668: sub put_dom {
1669: my ($namespace,$storehash,$udom,$uhome)=@_;
1670: if (!$udom) {
1671: $udom=$env{'user.domain'};
1672: if (defined(&domain($udom,'primary'))) {
1673: $uhome=&domain($udom,'primary');
1674: } else {
1675: undef($uhome);
1676: }
1677: } else {
1678: if (!$uhome) {
1679: if (defined(&domain($udom,'primary'))) {
1680: $uhome=&domain($udom,'primary');
1681: }
1682: }
1683: }
1684: if ($udom && $uhome && ($uhome ne 'no_host')) {
1685: my $items='';
1686: foreach my $item (keys(%$storehash)) {
1687: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1688: }
1689: $items=~s/\&$//;
1690: return &reply("putdom:$udom:$namespace:$items",$uhome);
1691: } else {
1692: &logthis("put_dom failed - no homeserver and/or domain");
1693: }
1694: }
1695:
1696: # --------------------- newput for items in db file owned by domainconfig user
1697: sub newput_dom {
1698: my ($namespace,$storehash,$udom) = @_;
1699: my $result;
1700: if (!$udom) {
1701: $udom=$env{'user.domain'};
1702: }
1703: if ($udom) {
1704: my $uname = &get_domainconfiguser($udom);
1705: $result = &newput($namespace,$storehash,$udom,$uname);
1706: }
1707: return $result;
1708: }
1709:
1710: # --------------------- delete for items in db file owned by domainconfig user
1711: sub del_dom {
1712: my ($namespace,$storearr,$udom)=@_;
1713: if (ref($storearr) eq 'ARRAY') {
1714: if (!$udom) {
1715: $udom=$env{'user.domain'};
1716: }
1717: if ($udom) {
1718: my $uname = &get_domainconfiguser($udom);
1719: return &del($namespace,$storearr,$udom,$uname);
1720: }
1721: }
1722: }
1723:
1724: # ----------------------------------construct domainconfig user for a domain
1725: sub get_domainconfiguser {
1726: my ($udom) = @_;
1727: return $udom.'-domainconfig';
1728: }
1729:
1730: sub retrieve_inst_usertypes {
1731: my ($udom) = @_;
1732: my (%returnhash,@order);
1733: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1734: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1735: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1736: %returnhash = %{$domdefs{'inststatustypes'}};
1737: @order = @{$domdefs{'inststatusorder'}};
1738: } else {
1739: if (defined(&domain($udom,'primary'))) {
1740: my $uhome=&domain($udom,'primary');
1741: my $rep=&reply("inst_usertypes:$udom",$uhome);
1742: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1743: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1744: return (\%returnhash,\@order);
1745: }
1746: my ($hashitems,$orderitems) = split(/:/,$rep);
1747: my @pairs=split(/\&/,$hashitems);
1748: foreach my $item (@pairs) {
1749: my ($key,$value)=split(/=/,$item,2);
1750: $key = &unescape($key);
1751: next if ($key =~ /^error: 2 /);
1752: $returnhash{$key}=&thaw_unescape($value);
1753: }
1754: my @esc_order = split(/\&/,$orderitems);
1755: foreach my $item (@esc_order) {
1756: push(@order,&unescape($item));
1757: }
1758: } else {
1759: &logthis("get_dom failed - no primary domain server for $udom");
1760: }
1761: }
1762: return (\%returnhash,\@order);
1763: }
1764:
1765: sub is_domainimage {
1766: my ($url) = @_;
1767: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1768: if (&domain($1) ne '') {
1769: return '1';
1770: }
1771: }
1772: return;
1773: }
1774:
1775: sub inst_directory_query {
1776: my ($srch) = @_;
1777: my $udom = $srch->{'srchdomain'};
1778: my %results;
1779: my $homeserver = &domain($udom,'primary');
1780: my $outcome;
1781: if ($homeserver ne '') {
1782: my $queryid=&reply("querysend:instdirsearch:".
1783: &escape($srch->{'srchby'}).':'.
1784: &escape($srch->{'srchterm'}).':'.
1785: &escape($srch->{'srchtype'}),$homeserver);
1786: my $host=&hostname($homeserver);
1787: if ($queryid !~/^\Q$host\E\_/) {
1788: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1789: return;
1790: }
1791: my $response = &get_query_reply($queryid);
1792: my $maxtries = 5;
1793: my $tries = 1;
1794: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1795: $response = &get_query_reply($queryid);
1796: $tries ++;
1797: }
1798:
1799: if (!&error($response) && $response ne 'refused') {
1800: if ($response eq 'unavailable') {
1801: $outcome = $response;
1802: } else {
1803: $outcome = 'ok';
1804: my @matches = split(/\n/,$response);
1805: foreach my $match (@matches) {
1806: my ($key,$value) = split(/=/,$match);
1807: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1808: }
1809: }
1810: }
1811: }
1812: return ($outcome,%results);
1813: }
1814:
1815: sub usersearch {
1816: my ($srch) = @_;
1817: my $dom = $srch->{'srchdomain'};
1818: my %results;
1819: my %libserv = &all_library();
1820: my $query = 'usersearch';
1821: foreach my $tryserver (keys(%libserv)) {
1822: if (&host_domain($tryserver) eq $dom) {
1823: my $host=&hostname($tryserver);
1824: my $queryid=
1825: &reply("querysend:".&escape($query).':'.
1826: &escape($srch->{'srchby'}).':'.
1827: &escape($srch->{'srchtype'}).':'.
1828: &escape($srch->{'srchterm'}),$tryserver);
1829: if ($queryid !~/^\Q$host\E\_/) {
1830: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1831: next;
1832: }
1833: my $reply = &get_query_reply($queryid);
1834: my $maxtries = 1;
1835: my $tries = 1;
1836: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1837: $reply = &get_query_reply($queryid);
1838: $tries ++;
1839: }
1840: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1841: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1842: } else {
1843: my @matches;
1844: if ($reply =~ /\n/) {
1845: @matches = split(/\n/,$reply);
1846: } else {
1847: @matches = split(/\&/,$reply);
1848: }
1849: foreach my $match (@matches) {
1850: my ($uname,$udom,%userhash);
1851: foreach my $entry (split(/:/,$match)) {
1852: my ($key,$value) =
1853: map {&unescape($_);} split(/=/,$entry);
1854: $userhash{$key} = $value;
1855: if ($key eq 'username') {
1856: $uname = $value;
1857: } elsif ($key eq 'domain') {
1858: $udom = $value;
1859: }
1860: }
1861: $results{$uname.':'.$udom} = \%userhash;
1862: }
1863: }
1864: }
1865: }
1866: return %results;
1867: }
1868:
1869: sub get_instuser {
1870: my ($udom,$uname,$id) = @_;
1871: my $homeserver = &domain($udom,'primary');
1872: my ($outcome,%results);
1873: if ($homeserver ne '') {
1874: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1875: &escape($id).':'.&escape($udom),$homeserver);
1876: my $host=&hostname($homeserver);
1877: if ($queryid !~/^\Q$host\E\_/) {
1878: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1879: return;
1880: }
1881: my $response = &get_query_reply($queryid);
1882: my $maxtries = 5;
1883: my $tries = 1;
1884: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1885: $response = &get_query_reply($queryid);
1886: $tries ++;
1887: }
1888: if (!&error($response) && $response ne 'refused') {
1889: if ($response eq 'unavailable') {
1890: $outcome = $response;
1891: } else {
1892: $outcome = 'ok';
1893: my @matches = split(/\n/,$response);
1894: foreach my $match (@matches) {
1895: my ($key,$value) = split(/=/,$match);
1896: $results{&unescape($key)} = &thaw_unescape($value);
1897: }
1898: }
1899: }
1900: }
1901: my %userinfo;
1902: if (ref($results{$uname}) eq 'HASH') {
1903: %userinfo = %{$results{$uname}};
1904: }
1905: return ($outcome,%userinfo);
1906: }
1907:
1908: sub inst_rulecheck {
1909: my ($udom,$uname,$id,$item,$rules) = @_;
1910: my %returnhash;
1911: if ($udom ne '') {
1912: if (ref($rules) eq 'ARRAY') {
1913: @{$rules} = map {&escape($_);} (@{$rules});
1914: my $rulestr = join(':',@{$rules});
1915: my $homeserver=&domain($udom,'primary');
1916: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1917: my $response;
1918: if ($item eq 'username') {
1919: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1920: ':'.&escape($uname).':'.$rulestr,
1921: $homeserver));
1922: } elsif ($item eq 'id') {
1923: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1924: ':'.&escape($id).':'.$rulestr,
1925: $homeserver));
1926: } elsif ($item eq 'selfcreate') {
1927: $response=&unescape(&reply('instselfcreatecheck:'.
1928: &escape($udom).':'.&escape($uname).
1929: ':'.$rulestr,$homeserver));
1930: }
1931: if ($response ne 'refused') {
1932: my @pairs=split(/\&/,$response);
1933: foreach my $item (@pairs) {
1934: my ($key,$value)=split(/=/,$item,2);
1935: $key = &unescape($key);
1936: next if ($key =~ /^error: 2 /);
1937: $returnhash{$key}=&thaw_unescape($value);
1938: }
1939: }
1940: }
1941: }
1942: }
1943: return %returnhash;
1944: }
1945:
1946: sub inst_userrules {
1947: my ($udom,$check) = @_;
1948: my (%ruleshash,@ruleorder);
1949: if ($udom ne '') {
1950: my $homeserver=&domain($udom,'primary');
1951: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1952: my $response;
1953: if ($check eq 'id') {
1954: $response=&reply('instidrules:'.&escape($udom),
1955: $homeserver);
1956: } elsif ($check eq 'email') {
1957: $response=&reply('instemailrules:'.&escape($udom),
1958: $homeserver);
1959: } else {
1960: $response=&reply('instuserrules:'.&escape($udom),
1961: $homeserver);
1962: }
1963: if (($response ne 'refused') && ($response ne 'error') &&
1964: ($response ne 'unknown_cmd') &&
1965: ($response ne 'no_such_host')) {
1966: my ($hashitems,$orderitems) = split(/:/,$response);
1967: my @pairs=split(/\&/,$hashitems);
1968: foreach my $item (@pairs) {
1969: my ($key,$value)=split(/=/,$item,2);
1970: $key = &unescape($key);
1971: next if ($key =~ /^error: 2 /);
1972: $ruleshash{$key}=&thaw_unescape($value);
1973: }
1974: my @esc_order = split(/\&/,$orderitems);
1975: foreach my $item (@esc_order) {
1976: push(@ruleorder,&unescape($item));
1977: }
1978: }
1979: }
1980: }
1981: return (\%ruleshash,\@ruleorder);
1982: }
1983:
1984: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1985:
1986: sub get_domain_defaults {
1987: my ($domain) = @_;
1988: my $cachetime = 60*60*24;
1989: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1990: if (defined($cached)) {
1991: if (ref($result) eq 'HASH') {
1992: return %{$result};
1993: }
1994: }
1995: my %domdefaults;
1996: my %domconfig =
1997: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1998: 'requestcourses','inststatus',
1999: 'coursedefaults','usersessions',
2000: 'requestauthor'],$domain);
2001: if (ref($domconfig{'defaults'}) eq 'HASH') {
2002: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2003: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2004: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2005: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2006: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2007: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2008: } else {
2009: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2010: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2011: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2012: }
2013: if (ref($domconfig{'quotas'}) eq 'HASH') {
2014: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2015: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2016: } else {
2017: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2018: }
2019: my @usertools = ('aboutme','blog','webdav','portfolio');
2020: foreach my $item (@usertools) {
2021: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2022: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2023: }
2024: }
2025: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2026: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2027: }
2028: }
2029: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2030: foreach my $item ('official','unofficial','community') {
2031: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2032: }
2033: }
2034: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2035: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2036: }
2037: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2038: foreach my $item ('inststatustypes','inststatusorder') {
2039: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2040: }
2041: }
2042: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2043: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2044: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2045: $domdefaults{'officialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'official'};
2046: $domdefaults{'unofficialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'unofficial'};
2047: }
2048: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2049: $domdefaults{'officialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'official'};
2050: $domdefaults{'unofficialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'unofficial'};
2051: $domdefaults{'communityquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'community'};
2052: }
2053: }
2054: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2055: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2056: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2057: }
2058: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2059: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2060: }
2061: }
2062: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2063: return %domdefaults;
2064: }
2065:
2066: # --------------------------------------------------- Assign a key to a student
2067:
2068: sub assign_access_key {
2069: #
2070: # a valid key looks like uname:udom#comments
2071: # comments are being appended
2072: #
2073: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2074: $kdom=
2075: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2076: $knum=
2077: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2078: $cdom=
2079: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2080: $cnum=
2081: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2082: $udom=$env{'user.name'} unless (defined($udom));
2083: $uname=$env{'user.domain'} unless (defined($uname));
2084: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2085: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2086: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2087: # assigned to this person
2088: # - this should not happen,
2089: # unless something went wrong
2090: # the first time around
2091: # ready to assign
2092: $logentry=$1.'; '.$logentry;
2093: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2094: $kdom,$knum) eq 'ok') {
2095: # key now belongs to user
2096: my $envkey='key.'.$cdom.'_'.$cnum;
2097: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2098: &appenv({'environment.'.$envkey => $ckey});
2099: return 'ok';
2100: } else {
2101: return
2102: 'error: Count not permanently assign key, will need to be re-entered later.';
2103: }
2104: } else {
2105: return 'error: Could not assign key, try again later.';
2106: }
2107: } elsif (!$existing{$ckey}) {
2108: # the key does not exist
2109: return 'error: The key does not exist';
2110: } else {
2111: # the key is somebody else's
2112: return 'error: The key is already in use';
2113: }
2114: }
2115:
2116: # ------------------------------------------ put an additional comment on a key
2117:
2118: sub comment_access_key {
2119: #
2120: # a valid key looks like uname:udom#comments
2121: # comments are being appended
2122: #
2123: my ($ckey,$cdom,$cnum,$logentry)=@_;
2124: $cdom=
2125: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2126: $cnum=
2127: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2128: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2129: if ($existing{$ckey}) {
2130: $existing{$ckey}.='; '.$logentry;
2131: # ready to assign
2132: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2133: $cdom,$cnum) eq 'ok') {
2134: return 'ok';
2135: } else {
2136: return 'error: Count not store comment.';
2137: }
2138: } else {
2139: # the key does not exist
2140: return 'error: The key does not exist';
2141: }
2142: }
2143:
2144: # ------------------------------------------------------ Generate a set of keys
2145:
2146: sub generate_access_keys {
2147: my ($number,$cdom,$cnum,$logentry)=@_;
2148: $cdom=
2149: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2150: $cnum=
2151: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2152: unless (&allowed('mky',$cdom)) { return 0; }
2153: unless (($cdom) && ($cnum)) { return 0; }
2154: if ($number>10000) { return 0; }
2155: sleep(2); # make sure don't get same seed twice
2156: srand(time()^($$+($$<<15))); # from "Programming Perl"
2157: my $total=0;
2158: for (my $i=1;$i<=$number;$i++) {
2159: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2160: sprintf("%lx",int(100000*rand)).'-'.
2161: sprintf("%lx",int(100000*rand));
2162: $newkey=~s/1/g/g; # folks mix up 1 and l
2163: $newkey=~s/0/h/g; # and also 0 and O
2164: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2165: if ($existing{$newkey}) {
2166: $i--;
2167: } else {
2168: if (&put('accesskeys',
2169: { $newkey => '# generated '.localtime().
2170: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2171: '; '.$logentry },
2172: $cdom,$cnum) eq 'ok') {
2173: $total++;
2174: }
2175: }
2176: }
2177: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2178: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2179: return $total;
2180: }
2181:
2182: # ------------------------------------------------------- Validate an accesskey
2183:
2184: sub validate_access_key {
2185: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2186: $cdom=
2187: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2188: $cnum=
2189: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2190: $udom=$env{'user.domain'} unless (defined($udom));
2191: $uname=$env{'user.name'} unless (defined($uname));
2192: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2193: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2194: }
2195:
2196: # ------------------------------------- Find the section of student in a course
2197: sub devalidate_getsection_cache {
2198: my ($udom,$unam,$courseid)=@_;
2199: my $hashid="$udom:$unam:$courseid";
2200: &devalidate_cache_new('getsection',$hashid);
2201: }
2202:
2203: sub courseid_to_courseurl {
2204: my ($courseid) = @_;
2205: #already url style courseid
2206: return $courseid if ($courseid =~ m{^/});
2207:
2208: if (exists($env{'course.'.$courseid.'.num'})) {
2209: my $cnum = $env{'course.'.$courseid.'.num'};
2210: my $cdom = $env{'course.'.$courseid.'.domain'};
2211: return "/$cdom/$cnum";
2212: }
2213:
2214: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2215: if (exists($courseinfo{'num'})) {
2216: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2217: }
2218:
2219: return undef;
2220: }
2221:
2222: sub getsection {
2223: my ($udom,$unam,$courseid)=@_;
2224: my $cachetime=1800;
2225:
2226: my $hashid="$udom:$unam:$courseid";
2227: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2228: if (defined($cached)) { return $result; }
2229:
2230: my %Pending;
2231: my %Expired;
2232: #
2233: # Each role can either have not started yet (pending), be active,
2234: # or have expired.
2235: #
2236: # If there is an active role, we are done.
2237: #
2238: # If there is more than one role which has not started yet,
2239: # choose the one which will start sooner
2240: # If there is one role which has not started yet, return it.
2241: #
2242: # If there is more than one expired role, choose the one which ended last.
2243: # If there is a role which has expired, return it.
2244: #
2245: $courseid = &courseid_to_courseurl($courseid);
2246: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2247: foreach my $key (keys(%roleshash)) {
2248: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2249: my $section=$1;
2250: if ($key eq $courseid.'_st') { $section=''; }
2251: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2252: my $now=time;
2253: if (defined($end) && $end && ($now > $end)) {
2254: $Expired{$end}=$section;
2255: next;
2256: }
2257: if (defined($start) && $start && ($now < $start)) {
2258: $Pending{$start}=$section;
2259: next;
2260: }
2261: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2262: }
2263: #
2264: # Presumedly there will be few matching roles from the above
2265: # loop and the sorting time will be negligible.
2266: if (scalar(keys(%Pending))) {
2267: my ($time) = sort {$a <=> $b} keys(%Pending);
2268: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2269: }
2270: if (scalar(keys(%Expired))) {
2271: my @sorted = sort {$a <=> $b} keys(%Expired);
2272: my $time = pop(@sorted);
2273: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2274: }
2275: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2276: }
2277:
2278: sub save_cache {
2279: &purge_remembered();
2280: #&Apache::loncommon::validate_page();
2281: undef(%env);
2282: undef($env_loaded);
2283: }
2284:
2285: my $to_remember=-1;
2286: my %remembered;
2287: my %accessed;
2288: my $kicks=0;
2289: my $hits=0;
2290: sub make_key {
2291: my ($name,$id) = @_;
2292: if (length($id) > 65
2293: && length(&escape($id)) > 200) {
2294: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2295: }
2296: return &escape($name.':'.$id);
2297: }
2298:
2299: sub devalidate_cache_new {
2300: my ($name,$id,$debug) = @_;
2301: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2302: $id=&make_key($name,$id);
2303: $memcache->delete($id);
2304: delete($remembered{$id});
2305: delete($accessed{$id});
2306: }
2307:
2308: sub is_cached_new {
2309: my ($name,$id,$debug) = @_;
2310: $id=&make_key($name,$id);
2311: if (exists($remembered{$id})) {
2312: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2313: $accessed{$id}=[&gettimeofday()];
2314: $hits++;
2315: return ($remembered{$id},1);
2316: }
2317: my $value = $memcache->get($id);
2318: if (!(defined($value))) {
2319: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2320: return (undef,undef);
2321: }
2322: if ($value eq '__undef__') {
2323: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2324: $value=undef;
2325: }
2326: &make_room($id,$value,$debug);
2327: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2328: return ($value,1);
2329: }
2330:
2331: sub do_cache_new {
2332: my ($name,$id,$value,$time,$debug) = @_;
2333: $id=&make_key($name,$id);
2334: my $setvalue=$value;
2335: if (!defined($setvalue)) {
2336: $setvalue='__undef__';
2337: }
2338: if (!defined($time) ) {
2339: $time=600;
2340: }
2341: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2342: my $result = $memcache->set($id,$setvalue,$time);
2343: if (! $result) {
2344: &logthis("caching of id -> $id failed");
2345: $memcache->disconnect_all();
2346: }
2347: # need to make a copy of $value
2348: &make_room($id,$value,$debug);
2349: return $value;
2350: }
2351:
2352: sub make_room {
2353: my ($id,$value,$debug)=@_;
2354:
2355: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2356: : $value;
2357: if ($to_remember<0) { return; }
2358: $accessed{$id}=[&gettimeofday()];
2359: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2360: my $to_kick;
2361: my $max_time=0;
2362: foreach my $other (keys(%accessed)) {
2363: if (&tv_interval($accessed{$other}) > $max_time) {
2364: $to_kick=$other;
2365: $max_time=&tv_interval($accessed{$other});
2366: }
2367: }
2368: delete($remembered{$to_kick});
2369: delete($accessed{$to_kick});
2370: $kicks++;
2371: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2372: return;
2373: }
2374:
2375: sub purge_remembered {
2376: #&logthis("Tossing ".scalar(keys(%remembered)));
2377: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2378: undef(%remembered);
2379: undef(%accessed);
2380: }
2381: # ------------------------------------- Read an entry from a user's environment
2382:
2383: sub userenvironment {
2384: my ($udom,$unam,@what)=@_;
2385: my $items;
2386: foreach my $item (@what) {
2387: $items.=&escape($item).'&';
2388: }
2389: $items=~s/\&$//;
2390: my %returnhash=();
2391: my $uhome = &homeserver($unam,$udom);
2392: unless ($uhome eq 'no_host') {
2393: my @answer=split(/\&/,
2394: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2395: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2396: return %returnhash;
2397: }
2398: my $i;
2399: for ($i=0;$i<=$#what;$i++) {
2400: $returnhash{$what[$i]}=&unescape($answer[$i]);
2401: }
2402: }
2403: return %returnhash;
2404: }
2405:
2406: # ---------------------------------------------------------- Get a studentphoto
2407: sub studentphoto {
2408: my ($udom,$unam,$ext) = @_;
2409: my $home=&Apache::lonnet::homeserver($unam,$udom);
2410: if (defined($env{'request.course.id'})) {
2411: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2412: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2413: return(&retrievestudentphoto($udom,$unam,$ext));
2414: } else {
2415: my ($result,$perm_reqd)=
2416: &Apache::lonnet::auto_photo_permission($unam,$udom);
2417: if ($result eq 'ok') {
2418: if (!($perm_reqd eq 'yes')) {
2419: return(&retrievestudentphoto($udom,$unam,$ext));
2420: }
2421: }
2422: }
2423: }
2424: } else {
2425: my ($result,$perm_reqd) =
2426: &Apache::lonnet::auto_photo_permission($unam,$udom);
2427: if ($result eq 'ok') {
2428: if (!($perm_reqd eq 'yes')) {
2429: return(&retrievestudentphoto($udom,$unam,$ext));
2430: }
2431: }
2432: }
2433: return '/adm/lonKaputt/lonlogo_broken.gif';
2434: }
2435:
2436: sub retrievestudentphoto {
2437: my ($udom,$unam,$ext,$type) = @_;
2438: my $home=&Apache::lonnet::homeserver($unam,$udom);
2439: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2440: if ($ret eq 'ok') {
2441: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2442: if ($type eq 'thumbnail') {
2443: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2444: }
2445: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2446: return $tokenurl;
2447: } else {
2448: if ($type eq 'thumbnail') {
2449: return '/adm/lonKaputt/genericstudent_tn.gif';
2450: } else {
2451: return '/adm/lonKaputt/lonlogo_broken.gif';
2452: }
2453: }
2454: }
2455:
2456: # -------------------------------------------------------------------- New chat
2457:
2458: sub chatsend {
2459: my ($newentry,$anon,$group)=@_;
2460: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2461: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2462: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2463: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2464: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2465: &escape($newentry)).':'.$group,$chome);
2466: }
2467:
2468: # ------------------------------------------ Find current version of a resource
2469:
2470: sub getversion {
2471: my $fname=&clutter(shift);
2472: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2473: return ¤tversion(&filelocation('',$fname));
2474: }
2475:
2476: sub currentversion {
2477: my $fname=shift;
2478: my $author=$fname;
2479: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2480: my ($udom,$uname)=split(/\//,$author);
2481: my $home=&homeserver($uname,$udom);
2482: if ($home eq 'no_host') {
2483: return -1;
2484: }
2485: my $answer=&reply("currentversion:$fname",$home);
2486: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2487: return -1;
2488: }
2489: return $answer;
2490: }
2491:
2492: #
2493: # Return special version number of resource if set by override, empty otherwise
2494: #
2495: sub usedversion {
2496: my $fname=shift;
2497: unless ($fname) { $fname=$env{'request.uri'}; }
2498: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2499: if ($urlversion) { return $urlversion; }
2500: return '';
2501: }
2502:
2503: # ----------------------------- Subscribe to a resource, return URL if possible
2504:
2505: sub subscribe {
2506: my $fname=shift;
2507: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2508: $fname=~s/[\n\r]//g;
2509: my $author=$fname;
2510: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2511: my ($udom,$uname)=split(/\//,$author);
2512: my $home=homeserver($uname,$udom);
2513: if ($home eq 'no_host') {
2514: return 'not_found';
2515: }
2516: my $answer=reply("sub:$fname",$home);
2517: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2518: $answer.=' by '.$home;
2519: }
2520: return $answer;
2521: }
2522:
2523: # -------------------------------------------------------------- Replicate file
2524:
2525: sub repcopy {
2526: my $filename=shift;
2527: $filename=~s/\/+/\//g;
2528: my $londocroot = $perlvar{'lonDocRoot'};
2529: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2530: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2531: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2532: $filename=~m{^/*(uploaded|editupload)/}) {
2533: return &repcopy_userfile($filename);
2534: }
2535: $filename=~s/[\n\r]//g;
2536: my $transname="$filename.in.transfer";
2537: # FIXME: this should flock
2538: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2539: my $remoteurl=subscribe($filename);
2540: if ($remoteurl =~ /^con_lost by/) {
2541: &logthis("Subscribe returned $remoteurl: $filename");
2542: return 'unavailable';
2543: } elsif ($remoteurl eq 'not_found') {
2544: #&logthis("Subscribe returned not_found: $filename");
2545: return 'not_found';
2546: } elsif ($remoteurl =~ /^rejected by/) {
2547: &logthis("Subscribe returned $remoteurl: $filename");
2548: return 'forbidden';
2549: } elsif ($remoteurl eq 'directory') {
2550: return 'ok';
2551: } else {
2552: my $author=$filename;
2553: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2554: my ($udom,$uname)=split(/\//,$author);
2555: my $home=homeserver($uname,$udom);
2556: unless ($home eq $perlvar{'lonHostID'}) {
2557: my @parts=split(/\//,$filename);
2558: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2559: if ($path ne "$londocroot/res") {
2560: &logthis("Malconfiguration for replication: $filename");
2561: return 'bad_request';
2562: }
2563: my $count;
2564: for ($count=5;$count<$#parts;$count++) {
2565: $path.="/$parts[$count]";
2566: if ((-e $path)!=1) {
2567: mkdir($path,0777);
2568: }
2569: }
2570: my $ua=new LWP::UserAgent;
2571: my $request=new HTTP::Request('GET',"$remoteurl");
2572: my $response=$ua->request($request,$transname);
2573: if ($response->is_error()) {
2574: unlink($transname);
2575: my $message=$response->status_line;
2576: &logthis("<font color=\"blue\">WARNING:"
2577: ." LWP get: $message: $filename</font>");
2578: return 'unavailable';
2579: } else {
2580: if ($remoteurl!~/\.meta$/) {
2581: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2582: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2583: if ($mresponse->is_error()) {
2584: unlink($filename.'.meta');
2585: &logthis(
2586: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2587: }
2588: }
2589: rename($transname,$filename);
2590: return 'ok';
2591: }
2592: }
2593: }
2594: }
2595:
2596: # ------------------------------------------------ Get server side include body
2597: sub ssi_body {
2598: my ($filelink,%form)=@_;
2599: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2600: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2601: }
2602: my $output='';
2603: my $response;
2604: if ($filelink=~/^https?\:/) {
2605: ($output,$response)=&externalssi($filelink);
2606: } else {
2607: $filelink .= $filelink=~/\?/ ? '&' : '?';
2608: $filelink .= 'inhibitmenu=yes';
2609: ($output,$response)=&ssi($filelink,%form);
2610: }
2611: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2612: $output=~s/^.*?\<body[^\>]*\>//si;
2613: $output=~s/\<\/body\s*\>.*?$//si;
2614: if (wantarray) {
2615: return ($output, $response);
2616: } else {
2617: return $output;
2618: }
2619: }
2620:
2621: # --------------------------------------------------------- Server Side Include
2622:
2623: sub absolute_url {
2624: my ($host_name) = @_;
2625: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2626: if ($host_name eq '') {
2627: $host_name = $ENV{'SERVER_NAME'};
2628: }
2629: return $protocol.$host_name;
2630: }
2631:
2632: #
2633: # Server side include.
2634: # Parameters:
2635: # fn Possibly encrypted resource name/id.
2636: # form Hash that describes how the rendering should be done
2637: # and other things.
2638: # Returns:
2639: # Scalar context: The content of the response.
2640: # Array context: 2 element list of the content and the full response object.
2641: #
2642: sub ssi {
2643:
2644: my ($fn,%form)=@_;
2645: my $ua=new LWP::UserAgent;
2646: my $request;
2647:
2648: $form{'no_update_last_known'}=1;
2649: &Apache::lonenc::check_encrypt(\$fn);
2650: if (%form) {
2651: $request=new HTTP::Request('POST',&absolute_url().$fn);
2652: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2653: } else {
2654: $request=new HTTP::Request('GET',&absolute_url().$fn);
2655: }
2656:
2657: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2658: my $response= $ua->request($request);
2659: my $content = $response->content;
2660:
2661:
2662: if (wantarray) {
2663: return ($content, $response);
2664: } else {
2665: return $content;
2666: }
2667: }
2668:
2669: sub externalssi {
2670: my ($url)=@_;
2671: my $ua=new LWP::UserAgent;
2672: my $request=new HTTP::Request('GET',$url);
2673: my $response=$ua->request($request);
2674: if (wantarray) {
2675: return ($response->content, $response);
2676: } else {
2677: return $response->content;
2678: }
2679: }
2680:
2681: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2682:
2683: sub allowuploaded {
2684: my ($srcurl,$url)=@_;
2685: $url=&clutter(&declutter($url));
2686: my $dir=$url;
2687: $dir=~s/\/[^\/]+$//;
2688: my %httpref=();
2689: my $httpurl=&hreflocation('',$url);
2690: $httpref{'httpref.'.$httpurl}=$srcurl;
2691: &Apache::lonnet::appenv(\%httpref);
2692: }
2693:
2694: #
2695: # Determine if the current user should be able to edit a particular resource,
2696: # when viewing in course context.
2697: # (a) When viewing resource used to determine if "Edit" item is included in
2698: # Functions.
2699: # (b) When displaying folder contents in course editor, used to determine if
2700: # "Edit" link will be displayed alongside resource.
2701: #
2702: # input: six args -- filename (decluttered), course number, course domain,
2703: # url, symb (if registered) and group (if this is a group
2704: # item -- e.g., bulletin board, group page etc.).
2705: # output: array of five scalars --
2706: # $cfile -- url for file editing if editable on current server
2707: # $home -- homeserver of resource (i.e., for author if published,
2708: # or course if uploaded.).
2709: # $switchserver -- 1 if server switch will be needed.
2710: # $forceedit -- 1 if icon/link should be to go to edit mode
2711: # $forceview -- 1 if icon/link should be to go to view mode
2712: #
2713:
2714: sub can_edit_resource {
2715: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2716: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2717: #
2718: # For aboutme pages user can only edit his/her own.
2719: #
2720: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2721: my ($sdom,$sname) = ($1,$2);
2722: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2723: $home = $env{'user.home'};
2724: $cfile = $resurl;
2725: if ($env{'form.forceedit'}) {
2726: $forceview = 1;
2727: } else {
2728: $forceedit = 1;
2729: }
2730: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2731: } else {
2732: return;
2733: }
2734: }
2735:
2736: if ($env{'request.course.id'}) {
2737: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2738: if ($group ne '') {
2739: # if this is a group homepage or group bulletin board, check group privs
2740: my $allowed = 0;
2741: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2742: if ((&allowed('mdg',$env{'request.course.id'}.
2743: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2744: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2745: $allowed = 1;
2746: }
2747: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2748: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2749: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2750: $allowed = 1;
2751: }
2752: }
2753: if ($allowed) {
2754: $home=&homeserver($cnum,$cdom);
2755: if ($env{'form.forceedit'}) {
2756: $forceview = 1;
2757: } else {
2758: $forceedit = 1;
2759: }
2760: $cfile = $resurl;
2761: } else {
2762: return;
2763: }
2764: } else {
2765: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2766: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2767: return;
2768: }
2769: } elsif (!$crsedit) {
2770: #
2771: # No edit allowed where CC has switched to student role.
2772: #
2773: return;
2774: }
2775: }
2776: }
2777:
2778: if ($file ne '') {
2779: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2780: if (&is_course_upload($file,$cnum,$cdom)) {
2781: $uploaded = 1;
2782: $incourse = 1;
2783: if ($file =~/\.(htm|html|css|js|txt)$/) {
2784: $cfile = &hreflocation('',$file);
2785: if ($env{'form.forceedit'}) {
2786: $forceview = 1;
2787: } else {
2788: $forceedit = 1;
2789: }
2790: }
2791: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2792: $incourse = 1;
2793: if ($env{'form.forceedit'}) {
2794: $forceview = 1;
2795: } else {
2796: $forceedit = 1;
2797: }
2798: $cfile = $resurl;
2799: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2800: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2801: $incourse = 1;
2802: if ($env{'form.forceedit'}) {
2803: $forceview = 1;
2804: } else {
2805: $forceedit = 1;
2806: }
2807: $cfile = $resurl;
2808: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2809: $incourse = 1;
2810: $cfile = $resurl.'/smpedit';
2811: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2812: $incourse = 1;
2813: if ($env{'form.forceedit'}) {
2814: $forceview = 1;
2815: } else {
2816: $forceedit = 1;
2817: }
2818: $cfile = $resurl;
2819: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2820: $incourse = 1;
2821: if ($env{'form.forceedit'}) {
2822: $forceview = 1;
2823: } else {
2824: $forceedit = 1;
2825: }
2826: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2827: }
2828: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2829: my $template = '/res/lib/templates/simpleproblem.problem';
2830: if (&is_on_map($template)) {
2831: $incourse = 1;
2832: $forceview = 1;
2833: $cfile = $template;
2834: }
2835: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2836: $incourse = 1;
2837: if ($env{'form.forceedit'}) {
2838: $forceview = 1;
2839: } else {
2840: $forceedit = 1;
2841: }
2842: $cfile = $resurl;
2843: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2844: $incourse = 1;
2845: $forceview = 1;
2846: if ($symb) {
2847: my ($map,$id,$res)=&decode_symb($symb);
2848: $env{'request.symb'} = $symb;
2849: $cfile = &clutter($res);
2850: } else {
2851: $cfile = $env{'form.suppurl'};
2852: $cfile =~ s{^http://}{};
2853: $cfile = '/adm/wrapper/ext/'.$cfile;
2854: }
2855: }
2856: }
2857: if ($uploaded || $incourse) {
2858: $home=&homeserver($cnum,$cdom);
2859: } elsif ($file !~ m{/$}) {
2860: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2861: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2862: # Check that the user has permission to edit this resource
2863: my $setpriv = 1;
2864: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2865: if (defined($cfudom)) {
2866: $home=&homeserver($cfuname,$cfudom);
2867: $cfile=$file;
2868: }
2869: }
2870: if (($cfile ne '') && (!$incourse || $uploaded) &&
2871: (($home ne '') && ($home ne 'no_host'))) {
2872: my @ids=¤t_machine_ids();
2873: unless (grep(/^\Q$home\E$/,@ids)) {
2874: $switchserver=1;
2875: }
2876: }
2877: }
2878: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2879: }
2880:
2881: sub is_course_upload {
2882: my ($file,$cnum,$cdom) = @_;
2883: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2884: $uploadpath =~ s{^\/}{};
2885: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
2886: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
2887: return 1;
2888: }
2889: return;
2890: }
2891:
2892: sub in_course {
2893: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2894: if ($hideprivileged) {
2895: my $skipuser;
2896: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2897: my @possdoms = ($cdom);
2898: if ($coursehash{'checkforpriv'}) {
2899: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
2900: }
2901: if (&privileged($uname,$udom,\@possdoms)) {
2902: $skipuser = 1;
2903: if ($coursehash{'nothideprivileged'}) {
2904: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2905: my $user;
2906: if ($item =~ /:/) {
2907: $user = $item;
2908: } else {
2909: $user = join(':',split(/[\@]/,$item));
2910: }
2911: if ($user eq $uname.':'.$udom) {
2912: undef($skipuser);
2913: last;
2914: }
2915: }
2916: }
2917: if ($skipuser) {
2918: return 0;
2919: }
2920: }
2921: }
2922: $type ||= 'any';
2923: if (!defined($cdom) || !defined($cnum)) {
2924: my $cid = $env{'request.course.id'};
2925: $cdom = $env{'course.'.$cid.'.domain'};
2926: $cnum = $env{'course.'.$cid.'.num'};
2927: }
2928: my $typesref;
2929: if (($type eq 'any') || ($type eq 'all')) {
2930: $typesref = ['active','previous','future'];
2931: } elsif ($type eq 'previous' || $type eq 'future') {
2932: $typesref = [$type];
2933: }
2934: my %roles = &get_my_roles($uname,$udom,'userroles',
2935: $typesref,undef,[$cdom]);
2936: my ($tmp) = keys(%roles);
2937: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
2938: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
2939: if (@course_roles > 0) {
2940: return 1;
2941: }
2942: return 0;
2943: }
2944:
2945: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2946: # input: action, courseID, current domain, intended
2947: # path to file, source of file, instruction to parse file for objects,
2948: # ref to hash for embedded objects,
2949: # ref to hash for codebase of java objects.
2950: # reference to scalar to accommodate mime type determined
2951: # from File::MMagic if $parser = parse.
2952: #
2953: # output: url to file (if action was uploaddoc),
2954: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2955: #
2956: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2957: # course.
2958: #
2959: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2960: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2961: # course's home server.
2962: #
2963: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2964: # be copied from $source (current location) to
2965: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2966: # and will then be copied to
2967: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2968: # course's home server.
2969: #
2970: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2971: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2972: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2973: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2974: # in course's home server.
2975: #
2976:
2977: sub process_coursefile {
2978: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2979: $mimetype)=@_;
2980: my $fetchresult;
2981: my $home=&homeserver($docuname,$docudom);
2982: if ($action eq 'propagate') {
2983: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2984: $home);
2985: } else {
2986: my $fpath = '';
2987: my $fname = $file;
2988: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2989: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2990: my $filepath = &build_filepath($fpath);
2991: if ($action eq 'copy') {
2992: if ($source eq '') {
2993: $fetchresult = 'no source file';
2994: return $fetchresult;
2995: } else {
2996: my $destination = $filepath.'/'.$fname;
2997: rename($source,$destination);
2998: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2999: $home);
3000: }
3001: } elsif ($action eq 'uploaddoc') {
3002: open(my $fh,'>'.$filepath.'/'.$fname);
3003: print $fh $env{'form.'.$source};
3004: close($fh);
3005: if ($parser eq 'parse') {
3006: my $mm = new File::MMagic;
3007: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3008: if ($type eq 'text/html') {
3009: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3010: unless ($parse_result eq 'ok') {
3011: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3012: }
3013: }
3014: if (ref($mimetype)) {
3015: $$mimetype = $type;
3016: }
3017: }
3018: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3019: $home);
3020: if ($fetchresult eq 'ok') {
3021: return '/uploaded/'.$fpath.'/'.$fname;
3022: } else {
3023: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3024: ' to host '.$home.': '.$fetchresult);
3025: return '/adm/notfound.html';
3026: }
3027: }
3028: }
3029: unless ( $fetchresult eq 'ok') {
3030: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3031: ' to host '.$home.': '.$fetchresult);
3032: }
3033: return $fetchresult;
3034: }
3035:
3036: sub build_filepath {
3037: my ($fpath) = @_;
3038: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3039: unless ($fpath eq '') {
3040: my @parts=split('/',$fpath);
3041: foreach my $part (@parts) {
3042: $filepath.= '/'.$part;
3043: if ((-e $filepath)!=1) {
3044: mkdir($filepath,0777);
3045: }
3046: }
3047: }
3048: return $filepath;
3049: }
3050:
3051: sub store_edited_file {
3052: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3053: my $file = $primary_url;
3054: $file =~ s#^/uploaded/$docudom/$docuname/##;
3055: my $fpath = '';
3056: my $fname = $file;
3057: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3058: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3059: my $filepath = &build_filepath($fpath);
3060: open(my $fh,'>'.$filepath.'/'.$fname);
3061: print $fh $content;
3062: close($fh);
3063: my $home=&homeserver($docuname,$docudom);
3064: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3065: $home);
3066: if ($$fetchresult eq 'ok') {
3067: return '/uploaded/'.$fpath.'/'.$fname;
3068: } else {
3069: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3070: ' to host '.$home.': '.$$fetchresult);
3071: return '/adm/notfound.html';
3072: }
3073: }
3074:
3075: sub clean_filename {
3076: my ($fname,$args)=@_;
3077: # Replace Windows backslashes by forward slashes
3078: $fname=~s/\\/\//g;
3079: if (!$args->{'keep_path'}) {
3080: # Get rid of everything but the actual filename
3081: $fname=~s/^.*\/([^\/]+)$/$1/;
3082: }
3083: # Replace spaces by underscores
3084: $fname=~s/\s+/\_/g;
3085: # Replace all other weird characters by nothing
3086: $fname=~s{[^/\w\.\-]}{}g;
3087: # Replace all .\d. sequences with _\d. so they no longer look like version
3088: # numbers
3089: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3090: return $fname;
3091: }
3092: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3093: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3094: # image with the same aspect ratio as the original, but with dimensions which do
3095: # not exceed $resizewidth and $resizeheight.
3096:
3097: sub resizeImage {
3098: my ($img_path,$resizewidth,$resizeheight) = @_;
3099: my $ima = Image::Magick->new;
3100: my $resized;
3101: if (-e $img_path) {
3102: $ima->Read($img_path);
3103: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3104: my $width = $ima->Get('width');
3105: my $height = $ima->Get('height');
3106: if ($width > $resizewidth) {
3107: my $factor = $width/$resizewidth;
3108: my $newheight = $height/$factor;
3109: $ima->Scale(width=>$resizewidth,height=>$newheight);
3110: $resized = 1;
3111: }
3112: }
3113: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3114: my $width = $ima->Get('width');
3115: my $height = $ima->Get('height');
3116: if ($height > $resizeheight) {
3117: my $factor = $height/$resizeheight;
3118: my $newwidth = $width/$factor;
3119: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3120: $resized = 1;
3121: }
3122: }
3123: if ($resized) {
3124: $ima->Write($img_path);
3125: }
3126: }
3127: return;
3128: }
3129:
3130: # --------------- Take an uploaded file and put it into the userfiles directory
3131: # input: $formname - the contents of the file are in $env{"form.$formname"}
3132: # the desired filename is in $env{"form.$formname.filename"}
3133: # $context - possible values: coursedoc, existingfile, overwrite,
3134: # canceloverwrite, or ''.
3135: # if 'coursedoc': upload to the current course
3136: # if 'existingfile': write file to tmp/overwrites directory
3137: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3138: # $context is passed as argument to &finishuserfileupload
3139: # $subdir - directory in userfile to store the file into
3140: # $parser - instruction to parse file for objects ($parser = parse)
3141: # $allfiles - reference to hash for embedded objects
3142: # $codebase - reference to hash for codebase of java objects
3143: # $desuname - username for permanent storage of uploaded file
3144: # $dsetudom - domain for permanaent storage of uploaded file
3145: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3146: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3147: # $resizewidth - width (pixels) to which to resize uploaded image
3148: # $resizeheight - height (pixels) to which to resize uploaded image
3149: # $mimetype - reference to scalar to accommodate mime type determined
3150: # from File::MMagic.
3151: #
3152: # output: url of file in userspace, or error: <message>
3153: # or /adm/notfound.html if failure to upload occurse
3154:
3155: sub userfileupload {
3156: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3157: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3158: if (!defined($subdir)) { $subdir='unknown'; }
3159: my $fname=$env{'form.'.$formname.'.filename'};
3160: $fname=&clean_filename($fname);
3161: # See if there is anything left
3162: unless ($fname) { return 'error: no uploaded file'; }
3163: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3164: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3165: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3166: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3167: my $now = time;
3168: my $filepath;
3169: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3170: $filepath = 'tmp/helprequests/'.$now;
3171: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3172: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3173: '_'.$env{'user.domain'}.'/pending';
3174: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3175: my ($docuname,$docudom);
3176: if ($destudom) {
3177: $docudom = $destudom;
3178: } else {
3179: $docudom = $env{'user.domain'};
3180: }
3181: if ($destuname) {
3182: $docuname = $destuname;
3183: } else {
3184: $docuname = $env{'user.name'};
3185: }
3186: if (exists($env{'form.group'})) {
3187: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3188: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3189: }
3190: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3191: if ($context eq 'canceloverwrite') {
3192: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3193: if (-e $tempfile) {
3194: my @info = stat($tempfile);
3195: if ($info[9] eq $env{'form.timestamp'}) {
3196: unlink($tempfile);
3197: }
3198: }
3199: return;
3200: }
3201: }
3202: # Create the directory if not present
3203: my @parts=split(/\//,$filepath);
3204: my $fullpath = $perlvar{'lonDaemons'};
3205: for (my $i=0;$i<@parts;$i++) {
3206: $fullpath .= '/'.$parts[$i];
3207: if ((-e $fullpath)!=1) {
3208: mkdir($fullpath,0777);
3209: }
3210: }
3211: open(my $fh,'>'.$fullpath.'/'.$fname);
3212: print $fh $env{'form.'.$formname};
3213: close($fh);
3214: if ($context eq 'existingfile') {
3215: my @info = stat($fullpath.'/'.$fname);
3216: return ($fullpath.'/'.$fname,$info[9]);
3217: } else {
3218: return $fullpath.'/'.$fname;
3219: }
3220: }
3221: if ($subdir eq 'scantron') {
3222: $fname = 'scantron_orig_'.$fname;
3223: } else {
3224: $fname="$subdir/$fname";
3225: }
3226: if ($context eq 'coursedoc') {
3227: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3228: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3229: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3230: return &finishuserfileupload($docuname,$docudom,
3231: $formname,$fname,$parser,$allfiles,
3232: $codebase,$thumbwidth,$thumbheight,
3233: $resizewidth,$resizeheight,$context,$mimetype);
3234: } else {
3235: if ($env{'form.folder'}) {
3236: $fname=$env{'form.folder'}.'/'.$fname;
3237: }
3238: return &process_coursefile('uploaddoc',$docuname,$docudom,
3239: $fname,$formname,$parser,
3240: $allfiles,$codebase,$mimetype);
3241: }
3242: } elsif (defined($destuname)) {
3243: my $docuname=$destuname;
3244: my $docudom=$destudom;
3245: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3246: $parser,$allfiles,$codebase,
3247: $thumbwidth,$thumbheight,
3248: $resizewidth,$resizeheight,$context,$mimetype);
3249: } else {
3250: my $docuname=$env{'user.name'};
3251: my $docudom=$env{'user.domain'};
3252: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3253: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3254: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3255: }
3256: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3257: $parser,$allfiles,$codebase,
3258: $thumbwidth,$thumbheight,
3259: $resizewidth,$resizeheight,$context,$mimetype);
3260: }
3261: }
3262:
3263: sub finishuserfileupload {
3264: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3265: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3266: my $path=$docudom.'/'.$docuname.'/';
3267: my $filepath=$perlvar{'lonDocRoot'};
3268:
3269: my ($fnamepath,$file,$fetchthumb);
3270: $file=$fname;
3271: if ($fname=~m|/|) {
3272: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3273: $path.=$fnamepath.'/';
3274: }
3275: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3276: my $count;
3277: for ($count=4;$count<=$#parts;$count++) {
3278: $filepath.="/$parts[$count]";
3279: if ((-e $filepath)!=1) {
3280: mkdir($filepath,0777);
3281: }
3282: }
3283:
3284: # Save the file
3285: {
3286: if (!open(FH,'>'.$filepath.'/'.$file)) {
3287: &logthis('Failed to create '.$filepath.'/'.$file);
3288: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3289: return '/adm/notfound.html';
3290: }
3291: if ($context eq 'overwrite') {
3292: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3293: my $target = $filepath.'/'.$file;
3294: if (-e $source) {
3295: my @info = stat($source);
3296: if ($info[9] eq $env{'form.timestamp'}) {
3297: unless (&File::Copy::move($source,$target)) {
3298: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3299: return "Moving from $source failed";
3300: }
3301: } else {
3302: return "Temporary file: $source had unexpected date/time for last modification";
3303: }
3304: } else {
3305: return "Temporary file: $source missing";
3306: }
3307: } elsif (!print FH ($env{'form.'.$formname})) {
3308: &logthis('Failed to write to '.$filepath.'/'.$file);
3309: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3310: return '/adm/notfound.html';
3311: }
3312: close(FH);
3313: if ($resizewidth && $resizeheight) {
3314: my $mm = new File::MMagic;
3315: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3316: if ($mime_type =~ m{^image/}) {
3317: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3318: }
3319: }
3320: }
3321: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3322: if (ref($mimetype)) {
3323: if ($$mimetype eq '') {
3324: my $mm = new File::MMagic;
3325: my $type = $mm->checktype_filename($filepath.'/'.$file);
3326: $$mimetype = $type;
3327: }
3328: }
3329: }
3330: if ($parser eq 'parse') {
3331: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3332: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3333: $allfiles,$codebase);
3334: unless ($parse_result eq 'ok') {
3335: &logthis('Failed to parse '.$filepath.$file.
3336: ' for embedded media: '.$parse_result);
3337: }
3338: }
3339: }
3340: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3341: my $input = $filepath.'/'.$file;
3342: my $output = $filepath.'/'.'tn-'.$file;
3343: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3344: system("convert -sample $thumbsize $input $output");
3345: if (-e $filepath.'/'.'tn-'.$file) {
3346: $fetchthumb = 1;
3347: }
3348: }
3349:
3350: # Notify homeserver to grep it
3351: #
3352: my $docuhome=&homeserver($docuname,$docudom);
3353: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3354: if ($fetchresult eq 'ok') {
3355: if ($fetchthumb) {
3356: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3357: if ($thumbresult ne 'ok') {
3358: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3359: $docuhome.': '.$thumbresult);
3360: }
3361: }
3362: #
3363: # Return the URL to it
3364: return '/uploaded/'.$path.$file;
3365: } else {
3366: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3367: ': '.$fetchresult);
3368: return '/adm/notfound.html';
3369: }
3370: }
3371:
3372: sub extract_embedded_items {
3373: my ($fullpath,$allfiles,$codebase,$content) = @_;
3374: my @state = ();
3375: my (%lastids,%related,%shockwave,%flashvars);
3376: my %javafiles = (
3377: codebase => '',
3378: code => '',
3379: archive => ''
3380: );
3381: my %mediafiles = (
3382: src => '',
3383: movie => '',
3384: );
3385: my $p;
3386: if ($content) {
3387: $p = HTML::LCParser->new($content);
3388: } else {
3389: $p = HTML::LCParser->new($fullpath);
3390: }
3391: while (my $t=$p->get_token()) {
3392: if ($t->[0] eq 'S') {
3393: my ($tagname, $attr) = ($t->[1],$t->[2]);
3394: push(@state, $tagname);
3395: if (lc($tagname) eq 'allow') {
3396: &add_filetype($allfiles,$attr->{'src'},'src');
3397: }
3398: if (lc($tagname) eq 'img') {
3399: &add_filetype($allfiles,$attr->{'src'},'src');
3400: }
3401: if (lc($tagname) eq 'a') {
3402: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3403: &add_filetype($allfiles,$attr->{'href'},'href');
3404: }
3405: }
3406: if (lc($tagname) eq 'script') {
3407: my $src;
3408: if ($attr->{'archive'} =~ /\.jar$/i) {
3409: &add_filetype($allfiles,$attr->{'archive'},'archive');
3410: } else {
3411: if ($attr->{'src'} ne '') {
3412: $src = $attr->{'src'};
3413: &add_filetype($allfiles,$src,'src');
3414: }
3415: }
3416: my $text = $p->get_trimmed_text();
3417: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3418: my @swfargs = split(/,/,$1);
3419: foreach my $item (@swfargs) {
3420: $item =~ s/["']//g;
3421: $item =~ s/^\s+//;
3422: $item =~ s/\s+$//;
3423: }
3424: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3425: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3426: push(@{$related{$swfargs[0]}},$swfargs[2]);
3427: } else {
3428: $related{$swfargs[0]} = [$swfargs[2]];
3429: }
3430: }
3431: }
3432: }
3433: if (lc($tagname) eq 'link') {
3434: if (lc($attr->{'rel'}) eq 'stylesheet') {
3435: &add_filetype($allfiles,$attr->{'href'},'href');
3436: }
3437: }
3438: if (lc($tagname) eq 'object' ||
3439: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3440: foreach my $item (keys(%javafiles)) {
3441: $javafiles{$item} = '';
3442: }
3443: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3444: $lastids{lc($tagname)} = $attr->{'id'};
3445: }
3446: }
3447: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3448: my $name = lc($attr->{'name'});
3449: foreach my $item (keys(%javafiles)) {
3450: if ($name eq $item) {
3451: $javafiles{$item} = $attr->{'value'};
3452: last;
3453: }
3454: }
3455: my $pathfrom;
3456: foreach my $item (keys(%mediafiles)) {
3457: if ($name eq $item) {
3458: $pathfrom = $attr->{'value'};
3459: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3460: &add_filetype($allfiles,$pathfrom,$name);
3461: last;
3462: }
3463: }
3464: if ($name eq 'flashvars') {
3465: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3466: }
3467: if ($pathfrom ne '') {
3468: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3469: $pathfrom);
3470: }
3471: }
3472: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3473: foreach my $item (keys(%javafiles)) {
3474: if ($attr->{$item}) {
3475: $javafiles{$item} = $attr->{$item};
3476: last;
3477: }
3478: }
3479: foreach my $item (keys(%mediafiles)) {
3480: if ($attr->{$item}) {
3481: &add_filetype($allfiles,$attr->{$item},$item);
3482: last;
3483: }
3484: }
3485: if (lc($tagname) eq 'embed') {
3486: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3487: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3488: $attr->{'src'});
3489: }
3490: }
3491: }
3492: if ($t->[4] =~ m{/>$}) {
3493: pop(@state);
3494: }
3495: } elsif ($t->[0] eq 'E') {
3496: my ($tagname) = ($t->[1]);
3497: if ($javafiles{'codebase'} ne '') {
3498: $javafiles{'codebase'} .= '/';
3499: }
3500: if (lc($tagname) eq 'applet' ||
3501: lc($tagname) eq 'object' ||
3502: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3503: ) {
3504: foreach my $item (keys(%javafiles)) {
3505: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3506: my $file=$javafiles{'codebase'}.$javafiles{$item};
3507: &add_filetype($allfiles,$file,$item);
3508: }
3509: }
3510: }
3511: pop @state;
3512: }
3513: }
3514: foreach my $id (sort(keys(%flashvars))) {
3515: if ($shockwave{$id} ne '') {
3516: my @pairs = split(/\&/,$flashvars{$id});
3517: foreach my $pair (@pairs) {
3518: my ($key,$value) = split(/\=/,$pair);
3519: if ($key eq 'thumb') {
3520: &add_filetype($allfiles,$value,$key);
3521: } elsif ($key eq 'content') {
3522: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3523: my ($ext) = ($value =~ /\.([^.]+)$/);
3524: if ($ext ne '') {
3525: &add_filetype($allfiles,$path.$value,$ext);
3526: }
3527: }
3528: }
3529: }
3530: }
3531: return 'ok';
3532: }
3533:
3534: sub add_filetype {
3535: my ($allfiles,$file,$type)=@_;
3536: if (exists($allfiles->{$file})) {
3537: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3538: push(@{$allfiles->{$file}}, &escape($type));
3539: }
3540: } else {
3541: @{$allfiles->{$file}} = (&escape($type));
3542: }
3543: }
3544:
3545: sub embedded_dependency {
3546: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3547: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3548: if (($identifier ne '') &&
3549: (ref($related->{$identifier}) eq 'ARRAY') &&
3550: ($pathfrom ne '')) {
3551: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3552: foreach my $dep (@{$related->{$identifier}}) {
3553: &add_filetype($allfiles,$path.$dep,'object');
3554: }
3555: }
3556: }
3557: return;
3558: }
3559:
3560: sub removeuploadedurl {
3561: my ($url)=@_;
3562: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3563: return &removeuserfile($uname,$udom,$fname);
3564: }
3565:
3566: sub removeuserfile {
3567: my ($docuname,$docudom,$fname)=@_;
3568: my $home=&homeserver($docuname,$docudom);
3569: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3570: if ($result eq 'ok') {
3571: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3572: my $metafile = $fname.'.meta';
3573: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3574: my $url = "/uploaded/$docudom/$docuname/$fname";
3575: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3576: my $sqlresult =
3577: &update_portfolio_table($docuname,$docudom,$file,
3578: 'portfolio_metadata',$group,
3579: 'delete');
3580: }
3581: }
3582: return $result;
3583: }
3584:
3585: sub mkdiruserfile {
3586: my ($docuname,$docudom,$dir)=@_;
3587: my $home=&homeserver($docuname,$docudom);
3588: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3589: }
3590:
3591: sub renameuserfile {
3592: my ($docuname,$docudom,$old,$new)=@_;
3593: my $home=&homeserver($docuname,$docudom);
3594: my $result = &reply("renameuserfile:$docudom:$docuname:".
3595: &escape("$old").':'.&escape("$new"),$home);
3596: if ($result eq 'ok') {
3597: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3598: my $oldmeta = $old.'.meta';
3599: my $newmeta = $new.'.meta';
3600: my $metaresult =
3601: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3602: my $url = "/uploaded/$docudom/$docuname/$old";
3603: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3604: my $sqlresult =
3605: &update_portfolio_table($docuname,$docudom,$file,
3606: 'portfolio_metadata',$group,
3607: 'delete');
3608: }
3609: }
3610: return $result;
3611: }
3612:
3613: # ------------------------------------------------------------------------- Log
3614:
3615: sub log {
3616: my ($dom,$nam,$hom,$what)=@_;
3617: return critical("log:$dom:$nam:$what",$hom);
3618: }
3619:
3620: # ------------------------------------------------------------------ Course Log
3621: #
3622: # This routine flushes several buffers of non-mission-critical nature
3623: #
3624:
3625: sub flushcourselogs {
3626: &logthis('Flushing log buffers');
3627: #
3628: # course logs
3629: # This is a log of all transactions in a course, which can be used
3630: # for data mining purposes
3631: #
3632: # It also collects the courseid database, which lists last transaction
3633: # times and course titles for all courseids
3634: #
3635: my %courseidbuffer=();
3636: foreach my $crsid (keys(%courselogs)) {
3637: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3638: &escape($courselogs{$crsid}),
3639: $coursehombuf{$crsid}) eq 'ok') {
3640: delete $courselogs{$crsid};
3641: } else {
3642: &logthis('Failed to flush log buffer for '.$crsid);
3643: if (length($courselogs{$crsid})>40000) {
3644: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3645: " exceeded maximum size, deleting.</font>");
3646: delete $courselogs{$crsid};
3647: }
3648: }
3649: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3650: 'description' => $coursedescrbuf{$crsid},
3651: 'inst_code' => $courseinstcodebuf{$crsid},
3652: 'type' => $coursetypebuf{$crsid},
3653: 'owner' => $courseownerbuf{$crsid},
3654: };
3655: }
3656: #
3657: # Write course id database (reverse lookup) to homeserver of courses
3658: # Is used in pickcourse
3659: #
3660: foreach my $crs_home (keys(%courseidbuffer)) {
3661: my $response = &courseidput(&host_domain($crs_home),
3662: $courseidbuffer{$crs_home},
3663: $crs_home,'timeonly');
3664: }
3665: #
3666: # File accesses
3667: # Writes to the dynamic metadata of resources to get hit counts, etc.
3668: #
3669: foreach my $entry (keys(%accesshash)) {
3670: if ($entry =~ /___count$/) {
3671: my ($dom,$name);
3672: ($dom,$name,undef)=
3673: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3674: if (! defined($dom) || $dom eq '' ||
3675: ! defined($name) || $name eq '') {
3676: my $cid = $env{'request.course.id'};
3677: $dom = $env{'request.'.$cid.'.domain'};
3678: $name = $env{'request.'.$cid.'.num'};
3679: }
3680: my $value = $accesshash{$entry};
3681: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3682: my %temphash=($url => $value);
3683: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3684: if ($result eq 'ok') {
3685: delete $accesshash{$entry};
3686: }
3687: } else {
3688: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3689: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3690: my %temphash=($entry => $accesshash{$entry});
3691: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3692: delete $accesshash{$entry};
3693: }
3694: }
3695: }
3696: #
3697: # Roles
3698: # Reverse lookup of user roles for course faculty/staff and co-authorship
3699: #
3700: foreach my $entry (keys(%userrolehash)) {
3701: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3702: split(/\:/,$entry);
3703: if (&Apache::lonnet::put('nohist_userroles',
3704: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3705: $rudom,$runame) eq 'ok') {
3706: delete $userrolehash{$entry};
3707: }
3708: }
3709: #
3710: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3711: #
3712: my %domrolebuffer = ();
3713: foreach my $entry (keys(%domainrolehash)) {
3714: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3715: if ($domrolebuffer{$rudom}) {
3716: $domrolebuffer{$rudom}.='&'.&escape($entry).
3717: '='.&escape($domainrolehash{$entry});
3718: } else {
3719: $domrolebuffer{$rudom}.=&escape($entry).
3720: '='.&escape($domainrolehash{$entry});
3721: }
3722: delete $domainrolehash{$entry};
3723: }
3724: foreach my $dom (keys(%domrolebuffer)) {
3725: my %servers = &get_servers($dom,'library');
3726: foreach my $tryserver (keys(%servers)) {
3727: unless (&reply('domroleput:'.$dom.':'.
3728: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3729: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3730: }
3731: }
3732: }
3733: $dumpcount++;
3734: }
3735:
3736: sub courselog {
3737: my $what=shift;
3738: $what=time.':'.$what;
3739: unless ($env{'request.course.id'}) { return ''; }
3740: $coursedombuf{$env{'request.course.id'}}=
3741: $env{'course.'.$env{'request.course.id'}.'.domain'};
3742: $coursenumbuf{$env{'request.course.id'}}=
3743: $env{'course.'.$env{'request.course.id'}.'.num'};
3744: $coursehombuf{$env{'request.course.id'}}=
3745: $env{'course.'.$env{'request.course.id'}.'.home'};
3746: $coursedescrbuf{$env{'request.course.id'}}=
3747: $env{'course.'.$env{'request.course.id'}.'.description'};
3748: $courseinstcodebuf{$env{'request.course.id'}}=
3749: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3750: $courseownerbuf{$env{'request.course.id'}}=
3751: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3752: $coursetypebuf{$env{'request.course.id'}}=
3753: $env{'course.'.$env{'request.course.id'}.'.type'};
3754: if (defined $courselogs{$env{'request.course.id'}}) {
3755: $courselogs{$env{'request.course.id'}}.='&'.$what;
3756: } else {
3757: $courselogs{$env{'request.course.id'}}.=$what;
3758: }
3759: if (length($courselogs{$env{'request.course.id'}})>4048) {
3760: &flushcourselogs();
3761: }
3762: }
3763:
3764: sub courseacclog {
3765: my $fnsymb=shift;
3766: unless ($env{'request.course.id'}) { return ''; }
3767: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3768: if ($fnsymb=~/$LONCAPA::assess_re/) {
3769: $what.=':POST';
3770: # FIXME: Probably ought to escape things....
3771: foreach my $key (keys(%env)) {
3772: if ($key=~/^form\.(.*)/) {
3773: my $formitem = $1;
3774: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3775: $what.=':'.$formitem.'='.$env{$key};
3776: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3777: $what.=':'.$formitem.'='.$env{$key};
3778: }
3779: }
3780: }
3781: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3782: # FIXME: We should not be depending on a form parameter that someone
3783: # editing lonsearchcat.pm might change in the future.
3784: if ($env{'form.phase'} eq 'course_search') {
3785: $what.= ':POST';
3786: # FIXME: Probably ought to escape things....
3787: foreach my $element ('courseexp','crsfulltext','crsrelated',
3788: 'crsdiscuss') {
3789: $what.=':'.$element.'='.$env{'form.'.$element};
3790: }
3791: }
3792: }
3793: &courselog($what);
3794: }
3795:
3796: sub countacc {
3797: my $url=&declutter(shift);
3798: return if (! defined($url) || $url eq '');
3799: unless ($env{'request.course.id'}) { return ''; }
3800: #
3801: # Mark that this url was used in this course
3802: #
3803: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3804: #
3805: # Increase the access count for this resource in this child process
3806: #
3807: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3808: $accesshash{$key}++;
3809: }
3810:
3811: sub linklog {
3812: my ($from,$to)=@_;
3813: $from=&declutter($from);
3814: $to=&declutter($to);
3815: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3816: $accesshash{$to.'___'.$from.'___goto'}=1;
3817: }
3818:
3819: sub statslog {
3820: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3821: if ($users<2) { return; }
3822: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3823: 'course' => $env{'request.course.id'},
3824: 'sections' => '"all"',
3825: 'num_students' => $users,
3826: 'part' => $part,
3827: 'symb' => $symb,
3828: 'mean_tries' => $av_attempts,
3829: 'deg_of_diff' => $degdiff});
3830: foreach my $key (keys(%dynstore)) {
3831: $accesshash{$key}=$dynstore{$key};
3832: }
3833: }
3834:
3835: sub userrolelog {
3836: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3837: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3838: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3839: $userrolehash
3840: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3841: =$tend.':'.$tstart;
3842: }
3843: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3844: $userrolehash
3845: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3846: =$tend.':'.$tstart;
3847: }
3848: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3849: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3850: $domainrolehash
3851: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3852: = $tend.':'.$tstart;
3853: }
3854: }
3855:
3856: sub courserolelog {
3857: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3858: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3859: my $cdom = $1;
3860: my $cnum = $2;
3861: my $sec = $3;
3862: my $namespace = 'rolelog';
3863: my %storehash = (
3864: role => $trole,
3865: start => $tstart,
3866: end => $tend,
3867: selfenroll => $selfenroll,
3868: context => $context,
3869: );
3870: if ($trole eq 'gr') {
3871: $namespace = 'groupslog';
3872: $storehash{'group'} = $sec;
3873: } else {
3874: $storehash{'section'} = $sec;
3875: }
3876: &write_log('course',$namespace,\%storehash,$delflag,$username,
3877: $domain,$cnum,$cdom);
3878: if (($trole ne 'st') || ($sec ne '')) {
3879: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3880: }
3881: }
3882: return;
3883: }
3884:
3885: sub domainrolelog {
3886: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3887: if ($area =~ m{^/($match_domain)/$}) {
3888: my $cdom = $1;
3889: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3890: my $namespace = 'rolelog';
3891: my %storehash = (
3892: role => $trole,
3893: start => $tstart,
3894: end => $tend,
3895: context => $context,
3896: );
3897: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3898: $domain,$domconfiguser,$cdom);
3899: }
3900: return;
3901:
3902: }
3903:
3904: sub coauthorrolelog {
3905: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3906: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3907: my $audom = $1;
3908: my $auname = $2;
3909: my $namespace = 'rolelog';
3910: my %storehash = (
3911: role => $trole,
3912: start => $tstart,
3913: end => $tend,
3914: context => $context,
3915: );
3916: &write_log('author',$namespace,\%storehash,$delflag,$username,
3917: $domain,$auname,$audom);
3918: }
3919: return;
3920: }
3921:
3922: sub get_course_adv_roles {
3923: my ($cid,$codes) = @_;
3924: $cid=$env{'request.course.id'} unless (defined($cid));
3925: my %coursehash=&coursedescription($cid);
3926: my $crstype = &Apache::loncommon::course_type($cid);
3927: my %nothide=();
3928: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3929: if ($user !~ /:/) {
3930: $nothide{join(':',split(/[\@]/,$user))}=1;
3931: } else {
3932: $nothide{$user}=1;
3933: }
3934: }
3935: my @possdoms = ($coursehash{'domain'});
3936: if ($coursehash{'checkforpriv'}) {
3937: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3938: }
3939: my %returnhash=();
3940: my %dumphash=
3941: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3942: my $now=time;
3943: my %privileged;
3944: foreach my $entry (keys(%dumphash)) {
3945: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3946: if (($tstart) && ($tstart<0)) { next; }
3947: if (($tend) && ($tend<$now)) { next; }
3948: if (($tstart) && ($now<$tstart)) { next; }
3949: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3950: if ($username eq '' || $domain eq '') { next; }
3951: if ((&privileged($username,$domain,\@possdoms)) &&
3952: (!$nothide{$username.':'.$domain})) { next; }
3953: if ($role eq 'cr') { next; }
3954: if ($codes) {
3955: if ($section) { $role .= ':'.$section; }
3956: if ($returnhash{$role}) {
3957: $returnhash{$role}.=','.$username.':'.$domain;
3958: } else {
3959: $returnhash{$role}=$username.':'.$domain;
3960: }
3961: } else {
3962: my $key=&plaintext($role,$crstype);
3963: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3964: if ($returnhash{$key}) {
3965: $returnhash{$key}.=','.$username.':'.$domain;
3966: } else {
3967: $returnhash{$key}=$username.':'.$domain;
3968: }
3969: }
3970: }
3971: return %returnhash;
3972: }
3973:
3974: sub get_my_roles {
3975: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3976: unless (defined($uname)) { $uname=$env{'user.name'}; }
3977: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3978: my (%dumphash,%nothide);
3979: if ($context eq 'userroles') {
3980: %dumphash = &dump('roles',$udom,$uname);
3981: } else {
3982: %dumphash = &dump('nohist_userroles',$udom,$uname);
3983: if ($hidepriv) {
3984: my %coursehash=&coursedescription($udom.'_'.$uname);
3985: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3986: if ($user !~ /:/) {
3987: $nothide{join(':',split(/[\@]/,$user))} = 1;
3988: } else {
3989: $nothide{$user} = 1;
3990: }
3991: }
3992: }
3993: }
3994: my %returnhash=();
3995: my $now=time;
3996: my %privileged;
3997: foreach my $entry (keys(%dumphash)) {
3998: my ($role,$tend,$tstart);
3999: if ($context eq 'userroles') {
4000: next if ($entry =~ /^rolesdef/);
4001: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4002: } else {
4003: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4004: }
4005: if (($tstart) && ($tstart<0)) { next; }
4006: my $status = 'active';
4007: if (($tend) && ($tend<=$now)) {
4008: $status = 'previous';
4009: }
4010: if (($tstart) && ($now<$tstart)) {
4011: $status = 'future';
4012: }
4013: if (ref($types) eq 'ARRAY') {
4014: if (!grep(/^\Q$status\E$/,@{$types})) {
4015: next;
4016: }
4017: } else {
4018: if ($status ne 'active') {
4019: next;
4020: }
4021: }
4022: my ($rolecode,$username,$domain,$section,$area);
4023: if ($context eq 'userroles') {
4024: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4025: (undef,$domain,$username,$section) = split(/\//,$area);
4026: } else {
4027: ($role,$username,$domain,$section) = split(/\:/,$entry);
4028: }
4029: if (ref($roledoms) eq 'ARRAY') {
4030: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4031: next;
4032: }
4033: }
4034: if (ref($roles) eq 'ARRAY') {
4035: if (!grep(/^\Q$role\E$/,@{$roles})) {
4036: if ($role =~ /^cr\//) {
4037: if (!grep(/^cr$/,@{$roles})) {
4038: next;
4039: }
4040: } elsif ($role =~ /^gr\//) {
4041: if (!grep(/^gr$/,@{$roles})) {
4042: next;
4043: }
4044: } else {
4045: next;
4046: }
4047: }
4048: }
4049: if ($hidepriv) {
4050: my @privroles = ('dc','su');
4051: if ($context eq 'userroles') {
4052: next if (grep(/^\Q$role\E$/,@privroles));
4053: } else {
4054: my $possdoms = [$domain];
4055: if (ref($roledoms) eq 'ARRAY') {
4056: push(@{$possdoms},@{$roledoms});
4057: }
4058: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4059: if (!$nothide{$username.':'.$domain}) {
4060: next;
4061: }
4062: }
4063: }
4064: }
4065: if ($withsec) {
4066: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4067: $tstart.':'.$tend;
4068: } else {
4069: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4070: }
4071: }
4072: return %returnhash;
4073: }
4074:
4075: # ----------------------------------------------------- Frontpage Announcements
4076: #
4077: #
4078:
4079: sub postannounce {
4080: my ($server,$text)=@_;
4081: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4082: unless ($text=~/\w/) { $text=''; }
4083: return &reply('setannounce:'.&escape($text),$server);
4084: }
4085:
4086: sub getannounce {
4087:
4088: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4089: my $announcement='';
4090: while (my $line = <$fh>) { $announcement .= $line; }
4091: close($fh);
4092: if ($announcement=~/\w/) {
4093: return
4094: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4095: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4096: } else {
4097: return '';
4098: }
4099: } else {
4100: return '';
4101: }
4102: }
4103:
4104: # ---------------------------------------------------------- Course ID routines
4105: # Deal with domain's nohist_courseid.db files
4106: #
4107:
4108: sub courseidput {
4109: my ($domain,$storehash,$coursehome,$caller) = @_;
4110: return unless (ref($storehash) eq 'HASH');
4111: my $outcome;
4112: if ($caller eq 'timeonly') {
4113: my $cids = '';
4114: foreach my $item (keys(%$storehash)) {
4115: $cids.=&escape($item).'&';
4116: }
4117: $cids=~s/\&$//;
4118: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4119: $coursehome);
4120: } else {
4121: my $items = '';
4122: foreach my $item (keys(%$storehash)) {
4123: $items.= &escape($item).'='.
4124: &freeze_escape($$storehash{$item}).'&';
4125: }
4126: $items=~s/\&$//;
4127: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4128: $coursehome);
4129: }
4130: if ($outcome eq 'unknown_cmd') {
4131: my $what;
4132: foreach my $cid (keys(%$storehash)) {
4133: $what .= &escape($cid).'=';
4134: foreach my $item ('description','inst_code','owner','type') {
4135: $what .= &escape($storehash->{$cid}{$item}).':';
4136: }
4137: $what =~ s/\:$/&/;
4138: }
4139: $what =~ s/\&$//;
4140: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4141: } else {
4142: return $outcome;
4143: }
4144: }
4145:
4146: sub courseiddump {
4147: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4148: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4149: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4150: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
4151: my $as_hash = 1;
4152: my %returnhash;
4153: if (!$domfilter) { $domfilter=''; }
4154: my %libserv = &all_library();
4155: foreach my $tryserver (keys(%libserv)) {
4156: if ( ( $hostidflag == 1
4157: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4158: || (!defined($hostidflag)) ) {
4159:
4160: if (($domfilter eq '') ||
4161: (&host_domain($tryserver) eq $domfilter)) {
4162: my $rep;
4163: if (grep { $_ eq $tryserver } current_machine_ids()) {
4164: $rep = LONCAPA::Lond::dump_course_id_handler(
4165: join(":", (&host_domain($tryserver), $sincefilter,
4166: &escape($descfilter), &escape($instcodefilter),
4167: &escape($ownerfilter), &escape($coursefilter),
4168: &escape($typefilter), &escape($regexp_ok),
4169: $as_hash, &escape($selfenrollonly),
4170: &escape($catfilter), $showhidden, $caller,
4171: &escape($cloner), &escape($cc_clone), $cloneonly,
4172: &escape($createdbefore), &escape($createdafter),
4173: &escape($creationcontext), $domcloner)));
4174: } else {
4175: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4176: $sincefilter.':'.&escape($descfilter).':'.
4177: &escape($instcodefilter).':'.&escape($ownerfilter).
4178: ':'.&escape($coursefilter).':'.&escape($typefilter).
4179: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4180: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4181: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4182: &escape($cc_clone).':'.$cloneonly.':'.
4183: &escape($createdbefore).':'.&escape($createdafter).':'.
4184: &escape($creationcontext).':'.$domcloner,
4185: $tryserver);
4186: }
4187:
4188: my @pairs=split(/\&/,$rep);
4189: foreach my $item (@pairs) {
4190: my ($key,$value)=split(/\=/,$item,2);
4191: $key = &unescape($key);
4192: next if ($key =~ /^error: 2 /);
4193: my $result = &thaw_unescape($value);
4194: if (ref($result) eq 'HASH') {
4195: $returnhash{$key}=$result;
4196: } else {
4197: my @responses = split(/:/,$value);
4198: my @items = ('description','inst_code','owner','type');
4199: for (my $i=0; $i<@responses; $i++) {
4200: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4201: }
4202: }
4203: }
4204: }
4205: }
4206: }
4207: return %returnhash;
4208: }
4209:
4210: sub courselastaccess {
4211: my ($cdom,$cnum,$hostidref) = @_;
4212: my %returnhash;
4213: if ($cdom && $cnum) {
4214: my $chome = &homeserver($cnum,$cdom);
4215: if ($chome ne 'no_host') {
4216: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4217: &extract_lastaccess(\%returnhash,$rep);
4218: }
4219: } else {
4220: if (!$cdom) { $cdom=''; }
4221: my %libserv = &all_library();
4222: foreach my $tryserver (keys(%libserv)) {
4223: if (ref($hostidref) eq 'ARRAY') {
4224: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4225: }
4226: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4227: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4228: &extract_lastaccess(\%returnhash,$rep);
4229: }
4230: }
4231: }
4232: return %returnhash;
4233: }
4234:
4235: sub extract_lastaccess {
4236: my ($returnhash,$rep) = @_;
4237: if (ref($returnhash) eq 'HASH') {
4238: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4239: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4240: $rep eq '') {
4241: my @pairs=split(/\&/,$rep);
4242: foreach my $item (@pairs) {
4243: my ($key,$value)=split(/\=/,$item,2);
4244: $key = &unescape($key);
4245: next if ($key =~ /^error: 2 /);
4246: $returnhash->{$key} = &thaw_unescape($value);
4247: }
4248: }
4249: }
4250: return;
4251: }
4252:
4253: # ---------------------------------------------------------- DC e-mail
4254:
4255: sub dcmailput {
4256: my ($domain,$msgid,$message,$server)=@_;
4257: my $status = &Apache::lonnet::critical(
4258: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4259: &escape($message),$server);
4260: return $status;
4261: }
4262:
4263: sub dcmaildump {
4264: my ($dom,$startdate,$enddate,$senders) = @_;
4265: my %returnhash=();
4266:
4267: if (defined(&domain($dom,'primary'))) {
4268: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4269: &escape($enddate).':';
4270: my @esc_senders=map { &escape($_)} @$senders;
4271: $cmd.=&escape(join('&',@esc_senders));
4272: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4273: my ($key,$value) = split(/\=/,$line,2);
4274: if (($key) && ($value)) {
4275: $returnhash{&unescape($key)} = &unescape($value);
4276: }
4277: }
4278: }
4279: return %returnhash;
4280: }
4281: # ---------------------------------------------------------- Domain roles
4282:
4283: sub get_domain_roles {
4284: my ($dom,$roles,$startdate,$enddate)=@_;
4285: if ((!defined($startdate)) || ($startdate eq '')) {
4286: $startdate = '.';
4287: }
4288: if ((!defined($enddate)) || ($enddate eq '')) {
4289: $enddate = '.';
4290: }
4291: my $rolelist;
4292: if (ref($roles) eq 'ARRAY') {
4293: $rolelist = join('&',@{$roles});
4294: }
4295: my %personnel = ();
4296:
4297: my %servers = &get_servers($dom,'library');
4298: foreach my $tryserver (keys(%servers)) {
4299: %{$personnel{$tryserver}}=();
4300: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4301: &escape($startdate).':'.
4302: &escape($enddate).':'.
4303: &escape($rolelist), $tryserver))) {
4304: my ($key,$value) = split(/\=/,$line,2);
4305: if (($key) && ($value)) {
4306: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4307: }
4308: }
4309: }
4310: return %personnel;
4311: }
4312:
4313: # ----------------------------------------------------------- Interval timing
4314:
4315: {
4316: # Caches needed for speedup of navmaps
4317: # We don't want to cache this for very long at all (5 seconds at most)
4318: #
4319: # The user for whom we cache
4320: my $cachedkey='';
4321: # The cached times for this user
4322: my %cachedtimes=();
4323: # When this was last done
4324: my $cachedtime=();
4325:
4326: sub load_all_first_access {
4327: my ($uname,$udom)=@_;
4328: if (($cachedkey eq $uname.':'.$udom) &&
4329: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4330: return;
4331: }
4332: $cachedtime=time;
4333: $cachedkey=$uname.':'.$udom;
4334: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4335: }
4336:
4337: sub get_first_access {
4338: my ($type,$argsymb,$argmap)=@_;
4339: my ($symb,$courseid,$udom,$uname)=&whichuser();
4340: if ($argsymb) { $symb=$argsymb; }
4341: my ($map,$id,$res)=&decode_symb($symb);
4342: if ($argmap) { $map = $argmap; }
4343: if ($type eq 'course') {
4344: $res='course';
4345: } elsif ($type eq 'map') {
4346: $res=&symbread($map);
4347: } else {
4348: $res=$symb;
4349: }
4350: &load_all_first_access($uname,$udom);
4351: return $cachedtimes{"$courseid\0$res"};
4352: }
4353:
4354: sub set_first_access {
4355: my ($type,$interval)=@_;
4356: my ($symb,$courseid,$udom,$uname)=&whichuser();
4357: my ($map,$id,$res)=&decode_symb($symb);
4358: if ($type eq 'course') {
4359: $res='course';
4360: } elsif ($type eq 'map') {
4361: $res=&symbread($map);
4362: } else {
4363: $res=$symb;
4364: }
4365: $cachedkey='';
4366: my $firstaccess=&get_first_access($type,$symb,$map);
4367: if (!$firstaccess) {
4368: my $start = time;
4369: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4370: $udom,$uname);
4371: if ($putres eq 'ok') {
4372: &put('timerinterval',{"$courseid\0$res"=>$interval},
4373: $udom,$uname);
4374: &appenv(
4375: {
4376: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4377: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4378: }
4379: );
4380: }
4381: return $putres;
4382: }
4383: return 'already_set';
4384: }
4385: }
4386: # --------------------------------------------- Set Expire Date for Spreadsheet
4387:
4388: sub expirespread {
4389: my ($uname,$udom,$stype,$usymb)=@_;
4390: my $cid=$env{'request.course.id'};
4391: if ($cid) {
4392: my $now=time;
4393: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4394: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4395: $env{'course.'.$cid.'.num'}.
4396: ':nohist_expirationdates:'.
4397: &escape($key).'='.$now,
4398: $env{'course.'.$cid.'.home'})
4399: }
4400: return 'ok';
4401: }
4402:
4403: # ----------------------------------------------------- Devalidate Spreadsheets
4404:
4405: sub devalidate {
4406: my ($symb,$uname,$udom)=@_;
4407: my $cid=$env{'request.course.id'};
4408: if ($cid) {
4409: # delete the stored spreadsheets for
4410: # - the student level sheet of this user in course's homespace
4411: # - the assessment level sheet for this resource
4412: # for this user in user's homespace
4413: # - current conditional state info
4414: my $key=$uname.':'.$udom.':';
4415: my $status=
4416: &del('nohist_calculatedsheets',
4417: [$key.'studentcalc:'],
4418: $env{'course.'.$cid.'.domain'},
4419: $env{'course.'.$cid.'.num'})
4420: .' '.
4421: &del('nohist_calculatedsheets_'.$cid,
4422: [$key.'assesscalc:'.$symb],$udom,$uname);
4423: unless ($status eq 'ok ok') {
4424: &logthis('Could not devalidate spreadsheet '.
4425: $uname.' at '.$udom.' for '.
4426: $symb.': '.$status);
4427: }
4428: &delenv('user.state.'.$cid);
4429: }
4430: }
4431:
4432: sub get_scalar {
4433: my ($string,$end) = @_;
4434: my $value;
4435: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4436: $value = $1;
4437: } elsif ($$string =~ s/^([^&]*?)&//) {
4438: $value = $1;
4439: }
4440: return &unescape($value);
4441: }
4442:
4443: sub array2str {
4444: my (@array) = @_;
4445: my $result=&arrayref2str(\@array);
4446: $result=~s/^__ARRAY_REF__//;
4447: $result=~s/__END_ARRAY_REF__$//;
4448: return $result;
4449: }
4450:
4451: sub arrayref2str {
4452: my ($arrayref) = @_;
4453: my $result='__ARRAY_REF__';
4454: foreach my $elem (@$arrayref) {
4455: if(ref($elem) eq 'ARRAY') {
4456: $result.=&arrayref2str($elem).'&';
4457: } elsif(ref($elem) eq 'HASH') {
4458: $result.=&hashref2str($elem).'&';
4459: } elsif(ref($elem)) {
4460: #print("Got a ref of ".(ref($elem))." skipping.");
4461: } else {
4462: $result.=&escape($elem).'&';
4463: }
4464: }
4465: $result=~s/\&$//;
4466: $result .= '__END_ARRAY_REF__';
4467: return $result;
4468: }
4469:
4470: sub hash2str {
4471: my (%hash) = @_;
4472: my $result=&hashref2str(\%hash);
4473: $result=~s/^__HASH_REF__//;
4474: $result=~s/__END_HASH_REF__$//;
4475: return $result;
4476: }
4477:
4478: sub hashref2str {
4479: my ($hashref)=@_;
4480: my $result='__HASH_REF__';
4481: foreach my $key (sort(keys(%$hashref))) {
4482: if (ref($key) eq 'ARRAY') {
4483: $result.=&arrayref2str($key).'=';
4484: } elsif (ref($key) eq 'HASH') {
4485: $result.=&hashref2str($key).'=';
4486: } elsif (ref($key)) {
4487: $result.='=';
4488: #print("Got a ref of ".(ref($key))." skipping.");
4489: } else {
4490: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4491: }
4492:
4493: if(ref($hashref->{$key}) eq 'ARRAY') {
4494: $result.=&arrayref2str($hashref->{$key}).'&';
4495: } elsif(ref($hashref->{$key}) eq 'HASH') {
4496: $result.=&hashref2str($hashref->{$key}).'&';
4497: } elsif(ref($hashref->{$key})) {
4498: $result.='&';
4499: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4500: } else {
4501: $result.=&escape($hashref->{$key}).'&';
4502: }
4503: }
4504: $result=~s/\&$//;
4505: $result .= '__END_HASH_REF__';
4506: return $result;
4507: }
4508:
4509: sub str2hash {
4510: my ($string)=@_;
4511: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4512: return %$hash;
4513: }
4514:
4515: sub str2hashref {
4516: my ($string) = @_;
4517:
4518: my %hash;
4519:
4520: if($string !~ /^__HASH_REF__/) {
4521: if (! ($string eq '' || !defined($string))) {
4522: $hash{'error'}='Not hash reference';
4523: }
4524: return (\%hash, $string);
4525: }
4526:
4527: $string =~ s/^__HASH_REF__//;
4528:
4529: while($string !~ /^__END_HASH_REF__/) {
4530: #key
4531: my $key='';
4532: if($string =~ /^__HASH_REF__/) {
4533: ($key, $string)=&str2hashref($string);
4534: if(defined($key->{'error'})) {
4535: $hash{'error'}='Bad data';
4536: return (\%hash, $string);
4537: }
4538: } elsif($string =~ /^__ARRAY_REF__/) {
4539: ($key, $string)=&str2arrayref($string);
4540: if($key->[0] eq 'Array reference error') {
4541: $hash{'error'}='Bad data';
4542: return (\%hash, $string);
4543: }
4544: } else {
4545: $string =~ s/^(.*?)=//;
4546: $key=&unescape($1);
4547: }
4548: $string =~ s/^=//;
4549:
4550: #value
4551: my $value='';
4552: if($string =~ /^__HASH_REF__/) {
4553: ($value, $string)=&str2hashref($string);
4554: if(defined($value->{'error'})) {
4555: $hash{'error'}='Bad data';
4556: return (\%hash, $string);
4557: }
4558: } elsif($string =~ /^__ARRAY_REF__/) {
4559: ($value, $string)=&str2arrayref($string);
4560: if($value->[0] eq 'Array reference error') {
4561: $hash{'error'}='Bad data';
4562: return (\%hash, $string);
4563: }
4564: } else {
4565: $value=&get_scalar(\$string,'__END_HASH_REF__');
4566: }
4567: $string =~ s/^&//;
4568:
4569: $hash{$key}=$value;
4570: }
4571:
4572: $string =~ s/^__END_HASH_REF__//;
4573:
4574: return (\%hash, $string);
4575: }
4576:
4577: sub str2array {
4578: my ($string)=@_;
4579: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4580: return @$array;
4581: }
4582:
4583: sub str2arrayref {
4584: my ($string) = @_;
4585: my @array;
4586:
4587: if($string !~ /^__ARRAY_REF__/) {
4588: if (! ($string eq '' || !defined($string))) {
4589: $array[0]='Array reference error';
4590: }
4591: return (\@array, $string);
4592: }
4593:
4594: $string =~ s/^__ARRAY_REF__//;
4595:
4596: while($string !~ /^__END_ARRAY_REF__/) {
4597: my $value='';
4598: if($string =~ /^__HASH_REF__/) {
4599: ($value, $string)=&str2hashref($string);
4600: if(defined($value->{'error'})) {
4601: $array[0] ='Array reference error';
4602: return (\@array, $string);
4603: }
4604: } elsif($string =~ /^__ARRAY_REF__/) {
4605: ($value, $string)=&str2arrayref($string);
4606: if($value->[0] eq 'Array reference error') {
4607: $array[0] ='Array reference error';
4608: return (\@array, $string);
4609: }
4610: } else {
4611: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4612: }
4613: $string =~ s/^&//;
4614:
4615: push(@array, $value);
4616: }
4617:
4618: $string =~ s/^__END_ARRAY_REF__//;
4619:
4620: return (\@array, $string);
4621: }
4622:
4623: # -------------------------------------------------------------------Temp Store
4624:
4625: sub tmpreset {
4626: my ($symb,$namespace,$domain,$stuname) = @_;
4627: if (!$symb) {
4628: $symb=&symbread();
4629: if (!$symb) { $symb= $env{'request.url'}; }
4630: }
4631: $symb=escape($symb);
4632:
4633: if (!$namespace) { $namespace=$env{'request.state'}; }
4634: $namespace=~s/\//\_/g;
4635: $namespace=~s/\W//g;
4636:
4637: if (!$domain) { $domain=$env{'user.domain'}; }
4638: if (!$stuname) { $stuname=$env{'user.name'}; }
4639: if ($domain eq 'public' && $stuname eq 'public') {
4640: $stuname=$ENV{'REMOTE_ADDR'};
4641: }
4642: my $path=LONCAPA::tempdir();
4643: my %hash;
4644: if (tie(%hash,'GDBM_File',
4645: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4646: &GDBM_WRCREAT(),0640)) {
4647: foreach my $key (keys(%hash)) {
4648: if ($key=~ /:$symb/) {
4649: delete($hash{$key});
4650: }
4651: }
4652: }
4653: }
4654:
4655: sub tmpstore {
4656: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4657:
4658: if (!$symb) {
4659: $symb=&symbread();
4660: if (!$symb) { $symb= $env{'request.url'}; }
4661: }
4662: $symb=escape($symb);
4663:
4664: if (!$namespace) {
4665: # I don't think we would ever want to store this for a course.
4666: # it seems this will only be used if we don't have a course.
4667: #$namespace=$env{'request.course.id'};
4668: #if (!$namespace) {
4669: $namespace=$env{'request.state'};
4670: #}
4671: }
4672: $namespace=~s/\//\_/g;
4673: $namespace=~s/\W//g;
4674: if (!$domain) { $domain=$env{'user.domain'}; }
4675: if (!$stuname) { $stuname=$env{'user.name'}; }
4676: if ($domain eq 'public' && $stuname eq 'public') {
4677: $stuname=$ENV{'REMOTE_ADDR'};
4678: }
4679: my $now=time;
4680: my %hash;
4681: my $path=LONCAPA::tempdir();
4682: if (tie(%hash,'GDBM_File',
4683: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4684: &GDBM_WRCREAT(),0640)) {
4685: $hash{"version:$symb"}++;
4686: my $version=$hash{"version:$symb"};
4687: my $allkeys='';
4688: foreach my $key (keys(%$storehash)) {
4689: $allkeys.=$key.':';
4690: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4691: }
4692: $hash{"$version:$symb:timestamp"}=$now;
4693: $allkeys.='timestamp';
4694: $hash{"$version:keys:$symb"}=$allkeys;
4695: if (untie(%hash)) {
4696: return 'ok';
4697: } else {
4698: return "error:$!";
4699: }
4700: } else {
4701: return "error:$!";
4702: }
4703: }
4704:
4705: # -----------------------------------------------------------------Temp Restore
4706:
4707: sub tmprestore {
4708: my ($symb,$namespace,$domain,$stuname) = @_;
4709:
4710: if (!$symb) {
4711: $symb=&symbread();
4712: if (!$symb) { $symb= $env{'request.url'}; }
4713: }
4714: $symb=escape($symb);
4715:
4716: if (!$namespace) { $namespace=$env{'request.state'}; }
4717:
4718: if (!$domain) { $domain=$env{'user.domain'}; }
4719: if (!$stuname) { $stuname=$env{'user.name'}; }
4720: if ($domain eq 'public' && $stuname eq 'public') {
4721: $stuname=$ENV{'REMOTE_ADDR'};
4722: }
4723: my %returnhash;
4724: $namespace=~s/\//\_/g;
4725: $namespace=~s/\W//g;
4726: my %hash;
4727: my $path=LONCAPA::tempdir();
4728: if (tie(%hash,'GDBM_File',
4729: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4730: &GDBM_READER(),0640)) {
4731: my $version=$hash{"version:$symb"};
4732: $returnhash{'version'}=$version;
4733: my $scope;
4734: for ($scope=1;$scope<=$version;$scope++) {
4735: my $vkeys=$hash{"$scope:keys:$symb"};
4736: my @keys=split(/:/,$vkeys);
4737: my $key;
4738: $returnhash{"$scope:keys"}=$vkeys;
4739: foreach $key (@keys) {
4740: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4741: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4742: }
4743: }
4744: if (!(untie(%hash))) {
4745: return "error:$!";
4746: }
4747: } else {
4748: return "error:$!";
4749: }
4750: return %returnhash;
4751: }
4752:
4753: # ----------------------------------------------------------------------- Store
4754:
4755: sub store {
4756: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4757: my $home='';
4758:
4759: if ($stuname) { $home=&homeserver($stuname,$domain); }
4760:
4761: $symb=&symbclean($symb);
4762: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4763:
4764: if (!$domain) { $domain=$env{'user.domain'}; }
4765: if (!$stuname) { $stuname=$env{'user.name'}; }
4766:
4767: &devalidate($symb,$stuname,$domain);
4768:
4769: $symb=escape($symb);
4770: if (!$namespace) {
4771: unless ($namespace=$env{'request.course.id'}) {
4772: return '';
4773: }
4774: }
4775: if (!$home) { $home=$env{'user.home'}; }
4776:
4777: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4778: $$storehash{'host'}=$perlvar{'lonHostID'};
4779:
4780: my $namevalue='';
4781: foreach my $key (keys(%$storehash)) {
4782: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4783: }
4784: $namevalue=~s/\&$//;
4785: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4786: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4787: }
4788:
4789: # -------------------------------------------------------------- Critical Store
4790:
4791: sub cstore {
4792: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4793: my $home='';
4794:
4795: if ($stuname) { $home=&homeserver($stuname,$domain); }
4796:
4797: $symb=&symbclean($symb);
4798: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4799:
4800: if (!$domain) { $domain=$env{'user.domain'}; }
4801: if (!$stuname) { $stuname=$env{'user.name'}; }
4802:
4803: &devalidate($symb,$stuname,$domain);
4804:
4805: $symb=escape($symb);
4806: if (!$namespace) {
4807: unless ($namespace=$env{'request.course.id'}) {
4808: return '';
4809: }
4810: }
4811: if (!$home) { $home=$env{'user.home'}; }
4812:
4813: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4814: $$storehash{'host'}=$perlvar{'lonHostID'};
4815:
4816: my $namevalue='';
4817: foreach my $key (keys(%$storehash)) {
4818: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4819: }
4820: $namevalue=~s/\&$//;
4821: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4822: return critical
4823: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4824: }
4825:
4826: # --------------------------------------------------------------------- Restore
4827:
4828: sub restore {
4829: my ($symb,$namespace,$domain,$stuname) = @_;
4830: my $home='';
4831:
4832: if ($stuname) { $home=&homeserver($stuname,$domain); }
4833:
4834: if (!$symb) {
4835: return if ($namespace eq 'courserequests');
4836: unless ($symb=escape(&symbread())) { return ''; }
4837: } else {
4838: unless ($namespace eq 'courserequests') {
4839: $symb=&escape(&symbclean($symb));
4840: }
4841: }
4842: if (!$namespace) {
4843: unless ($namespace=$env{'request.course.id'}) {
4844: return '';
4845: }
4846: }
4847: if (!$domain) { $domain=$env{'user.domain'}; }
4848: if (!$stuname) { $stuname=$env{'user.name'}; }
4849: if (!$home) { $home=$env{'user.home'}; }
4850: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4851:
4852: my %returnhash=();
4853: foreach my $line (split(/\&/,$answer)) {
4854: my ($name,$value)=split(/\=/,$line);
4855: $returnhash{&unescape($name)}=&thaw_unescape($value);
4856: }
4857: my $version;
4858: for ($version=1;$version<=$returnhash{'version'};$version++) {
4859: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4860: $returnhash{$item}=$returnhash{$version.':'.$item};
4861: }
4862: }
4863: return %returnhash;
4864: }
4865:
4866: # ---------------------------------------------------------- Course Description
4867: #
4868: #
4869:
4870: sub coursedescription {
4871: my ($courseid,$args)=@_;
4872: $courseid=~s/^\///;
4873: $courseid=~s/\_/\//g;
4874: my ($cdomain,$cnum)=split(/\//,$courseid);
4875: my $chome=&homeserver($cnum,$cdomain);
4876: my $normalid=$cdomain.'_'.$cnum;
4877: # need to always cache even if we get errors otherwise we keep
4878: # trying and trying and trying to get the course description.
4879: my %envhash=();
4880: my %returnhash=();
4881:
4882: my $expiretime=600;
4883: if ($env{'request.course.id'} eq $normalid) {
4884: $expiretime=120;
4885: }
4886:
4887: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4888: if (!$args->{'freshen_cache'}
4889: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4890: foreach my $key (keys(%env)) {
4891: next if ($key !~ /^\Q$prefix\E(.*)/);
4892: my ($setting) = $1;
4893: $returnhash{$setting} = $env{$key};
4894: }
4895: return %returnhash;
4896: }
4897:
4898: # get the data again
4899:
4900: if (!$args->{'one_time'}) {
4901: $envhash{'course.'.$normalid.'.last_cache'}=time;
4902: }
4903:
4904: if ($chome ne 'no_host') {
4905: %returnhash=&dump('environment',$cdomain,$cnum);
4906: if (!exists($returnhash{'con_lost'})) {
4907: my $username = $env{'user.name'}; # Defult username
4908: if(defined $args->{'user'}) {
4909: $username = $args->{'user'};
4910: }
4911: $returnhash{'home'}= $chome;
4912: $returnhash{'domain'} = $cdomain;
4913: $returnhash{'num'} = $cnum;
4914: if (!defined($returnhash{'type'})) {
4915: $returnhash{'type'} = 'Course';
4916: }
4917: while (my ($name,$value) = each %returnhash) {
4918: $envhash{'course.'.$normalid.'.'.$name}=$value;
4919: }
4920: $returnhash{'url'}=&clutter($returnhash{'url'});
4921: $returnhash{'fn'}=LONCAPA::tempdir() .
4922: $username.'_'.$cdomain.'_'.$cnum;
4923: $envhash{'course.'.$normalid.'.home'}=$chome;
4924: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4925: $envhash{'course.'.$normalid.'.num'}=$cnum;
4926: }
4927: }
4928: if (!$args->{'one_time'}) {
4929: &appenv(\%envhash);
4930: }
4931: return %returnhash;
4932: }
4933:
4934: sub update_released_required {
4935: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4936: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4937: $cid = $env{'request.course.id'};
4938: $cdom = $env{'course.'.$cid.'.domain'};
4939: $cnum = $env{'course.'.$cid.'.num'};
4940: $chome = $env{'course.'.$cid.'.home'};
4941: }
4942: if ($needsrelease) {
4943: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4944: my $needsupdate;
4945: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4946: $needsupdate = 1;
4947: } else {
4948: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4949: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4950: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4951: $needsupdate = 1;
4952: }
4953: }
4954: if ($needsupdate) {
4955: my %needshash = (
4956: 'internal.releaserequired' => $needsrelease,
4957: );
4958: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4959: if ($putresult eq 'ok') {
4960: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4961: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4962: if (ref($crsinfo{$cid}) eq 'HASH') {
4963: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4964: &courseidput($cdom,\%crsinfo,$chome,'notime');
4965: }
4966: }
4967: }
4968: }
4969: return;
4970: }
4971:
4972: # -------------------------------------------------See if a user is privileged
4973:
4974: sub privileged {
4975: my ($username,$domain,$possdomains,$possroles)=@_;
4976: my $now = time;
4977: my $roles;
4978: if (ref($possroles) eq 'ARRAY') {
4979: $roles = $possroles;
4980: } else {
4981: $roles = ['dc','su'];
4982: }
4983: if (ref($possdomains) eq 'ARRAY') {
4984: my %privileged = &privileged_by_domain($possdomains,$roles);
4985: foreach my $dom (@{$possdomains}) {
4986: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
4987: (ref($privileged{$dom}) eq 'HASH')) {
4988: foreach my $role (@{$roles}) {
4989: if (ref($privileged{$dom}{$role}) eq 'HASH') {
4990: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
4991: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
4992: return 1 unless (($end && $end < $now) ||
4993: ($start && $start > $now));
4994: }
4995: }
4996: }
4997: }
4998: }
4999: } else {
5000: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5001: my $now = time;
5002:
5003: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
5004: my ($trole, $tend, $tstart) = split(/_/, $role);
5005: if (grep(/^\Q$trole\E$/,@{$roles})) {
5006: return 1 unless ($tend && $tend < $now)
5007: or ($tstart && $tstart > $now);
5008: }
5009: }
5010: }
5011: return 0;
5012: }
5013:
5014: sub privileged_by_domain {
5015: my ($domains,$roles) = @_;
5016: my %privileged = ();
5017: my $cachetime = 60*60*24;
5018: my $now = time;
5019: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5020: return %privileged;
5021: }
5022: foreach my $dom (@{$domains}) {
5023: next if (ref($privileged{$dom}) eq 'HASH');
5024: my $needroles;
5025: foreach my $role (@{$roles}) {
5026: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5027: if (defined($cached)) {
5028: if (ref($result) eq 'HASH') {
5029: $privileged{$dom}{$role} = $result;
5030: }
5031: } else {
5032: $needroles = 1;
5033: }
5034: }
5035: if ($needroles) {
5036: my %dompersonnel = &get_domain_roles($dom,$roles);
5037: $privileged{$dom} = {};
5038: foreach my $server (keys(%dompersonnel)) {
5039: if (ref($dompersonnel{$server}) eq 'HASH') {
5040: foreach my $item (keys(%{$dompersonnel{$server}})) {
5041: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5042: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5043: next if ($end && $end < $now);
5044: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5045: $dompersonnel{$server}{$item};
5046: }
5047: }
5048: }
5049: if (ref($privileged{$dom}) eq 'HASH') {
5050: foreach my $role (@{$roles}) {
5051: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5052: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5053: } else {
5054: my %hash = ();
5055: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5056: }
5057: }
5058: }
5059: }
5060: }
5061: return %privileged;
5062: }
5063:
5064: # -------------------------------------------------------- Get user privileges
5065:
5066: sub rolesinit {
5067: my ($domain, $username) = @_;
5068: my %userroles = ('user.login.time' => time);
5069: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5070:
5071: # firstaccess and timerinterval are related to timed maps/resources.
5072: # also, blocking can be triggered by an activating timer
5073: # it's saved in the user's %env.
5074: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5075: my %timerinterval = &dump('timerinterval', $domain, $username);
5076: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5077: %timerintchk, %timerintenv);
5078:
5079: foreach my $key (keys(%firstaccess)) {
5080: my ($cid, $rest) = split(/\0/, $key);
5081: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5082: }
5083:
5084: foreach my $key (keys(%timerinterval)) {
5085: my ($cid,$rest) = split(/\0/,$key);
5086: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5087: }
5088:
5089: my %allroles=();
5090: my %allgroups=();
5091:
5092: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
5093: my $role = $rolesdump{$area};
5094: $area =~ s/\_\w\w$//;
5095:
5096: my ($trole, $tend, $tstart, $group_privs);
5097:
5098: if ($role =~ /^cr/) {
5099: # Custom role, defined by a user
5100: # e.g., user.role.cr/msu/smith/mynewrole
5101: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5102: $trole = $1;
5103: ($tend, $tstart) = split('_', $2);
5104: } else {
5105: $trole = $role;
5106: }
5107: } elsif ($role =~ m|^gr/|) {
5108: # Role of member in a group, defined within a course/community
5109: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5110: ($trole, $tend, $tstart) = split(/_/, $role);
5111: next if $tstart eq '-1';
5112: ($trole, $group_privs) = split(/\//, $trole);
5113: $group_privs = &unescape($group_privs);
5114: } else {
5115: # Just a normal role, defined in roles.tab
5116: ($trole, $tend, $tstart) = split(/_/,$role);
5117: }
5118:
5119: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5120: $username);
5121: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5122:
5123: # role expired or not available yet?
5124: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5125: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5126:
5127: next if $area eq '' or $trole eq '';
5128:
5129: my $spec = "$trole.$area";
5130: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5131:
5132: if ($trole =~ /^cr\//) {
5133: # Custom role, defined by a user
5134: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5135: } elsif ($trole eq 'gr') {
5136: # Role of a member in a group, defined within a course/community
5137: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5138: next;
5139: } else {
5140: # Normal role, defined in roles.tab
5141: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5142: }
5143:
5144: my $cid = $tdomain.'_'.$trest;
5145: unless ($firstaccchk{$cid}) {
5146: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5147: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5148: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5149: $coursetimerstarts{$cid}{$item};
5150: }
5151: }
5152: $firstaccchk{$cid} = 1;
5153: }
5154: unless ($timerintchk{$cid}) {
5155: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5156: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5157: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5158: $coursetimerintervals{$cid}{$item};
5159: }
5160: }
5161: $timerintchk{$cid} = 1;
5162: }
5163: }
5164:
5165: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5166: \%allroles, \%allgroups);
5167: $env{'user.adv'} = $userroles{'user.adv'};
5168:
5169: return (\%userroles,\%firstaccenv,\%timerintenv);
5170: }
5171:
5172: sub set_arearole {
5173: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5174: unless ($nolog) {
5175: # log the associated role with the area
5176: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5177: }
5178: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5179: }
5180:
5181: sub custom_roleprivs {
5182: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5183: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5184: my $homsvr=homeserver($rauthor,$rdomain);
5185: if (&hostname($homsvr) ne '') {
5186: my ($rdummy,$roledef)=
5187: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5188: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5189: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5190: if (defined($syspriv)) {
5191: if ($trest =~ /^$match_community$/) {
5192: $syspriv =~ s/bre\&S//;
5193: }
5194: $$allroles{'cm./'}.=':'.$syspriv;
5195: $$allroles{$spec.'./'}.=':'.$syspriv;
5196: }
5197: if ($tdomain ne '') {
5198: if (defined($dompriv)) {
5199: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5200: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5201: }
5202: if (($trest ne '') && (defined($coursepriv))) {
5203: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5204: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5205: }
5206: }
5207: }
5208: }
5209: }
5210:
5211: sub group_roleprivs {
5212: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5213: my $access = 1;
5214: my $now = time;
5215: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5216: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5217: if ($access) {
5218: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5219: $$allgroups{$course}{$group} .=':'.$group_privs;
5220: }
5221: }
5222:
5223: sub standard_roleprivs {
5224: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5225: if (defined($pr{$trole.':s'})) {
5226: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5227: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5228: }
5229: if ($tdomain ne '') {
5230: if (defined($pr{$trole.':d'})) {
5231: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5232: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5233: }
5234: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5235: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5236: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5237: }
5238: }
5239: }
5240:
5241: sub set_userprivs {
5242: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5243: my $author=0;
5244: my $adv=0;
5245: my %grouproles = ();
5246: if (keys(%{$allgroups}) > 0) {
5247: my @groupkeys;
5248: foreach my $role (keys(%{$allroles})) {
5249: push(@groupkeys,$role);
5250: }
5251: if (ref($groups_roles) eq 'HASH') {
5252: foreach my $key (keys(%{$groups_roles})) {
5253: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5254: push(@groupkeys,$key);
5255: }
5256: }
5257: }
5258: if (@groupkeys > 0) {
5259: foreach my $role (@groupkeys) {
5260: my ($trole,$area,$sec,$extendedarea);
5261: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5262: $trole = $1;
5263: $area = $2;
5264: $sec = $3;
5265: $extendedarea = $area.$sec;
5266: if (exists($$allgroups{$area})) {
5267: foreach my $group (keys(%{$$allgroups{$area}})) {
5268: my $spec = $trole.'.'.$extendedarea;
5269: $grouproles{$spec.'.'.$area.'/'.$group} =
5270: $$allgroups{$area}{$group};
5271: }
5272: }
5273: }
5274: }
5275: }
5276: }
5277: foreach my $group (keys(%grouproles)) {
5278: $$allroles{$group} = $grouproles{$group};
5279: }
5280: foreach my $role (keys(%{$allroles})) {
5281: my %thesepriv;
5282: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5283: foreach my $item (split(/:/,$$allroles{$role})) {
5284: if ($item ne '') {
5285: my ($privilege,$restrictions)=split(/&/,$item);
5286: if ($restrictions eq '') {
5287: $thesepriv{$privilege}='F';
5288: } elsif ($thesepriv{$privilege} ne 'F') {
5289: $thesepriv{$privilege}.=$restrictions;
5290: }
5291: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5292: }
5293: }
5294: my $thesestr='';
5295: foreach my $priv (sort(keys(%thesepriv))) {
5296: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5297: }
5298: $userroles->{'user.priv.'.$role} = $thesestr;
5299: }
5300: return ($author,$adv);
5301: }
5302:
5303: sub role_status {
5304: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5305: my @pwhere = ();
5306: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5307: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5308: unless (!defined($$role) || $$role eq '') {
5309: $$where=join('.',@pwhere);
5310: $$trolecode=$$role.'.'.$$where;
5311: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5312: $$tstatus='is';
5313: if ($$tstart && $$tstart>$update) {
5314: $$tstatus='future';
5315: if ($$tstart<$now) {
5316: if ($$tstart && $$tstart>$refresh) {
5317: if (($$where ne '') && ($$role ne '')) {
5318: my (%allroles,%allgroups,$group_privs,
5319: %groups_roles,@rolecodes);
5320: my %userroles = (
5321: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5322: );
5323: @rolecodes = ('cm');
5324: my $spec=$$role.'.'.$$where;
5325: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5326: if ($$role =~ /^cr\//) {
5327: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5328: push(@rolecodes,'cr');
5329: } elsif ($$role eq 'gr') {
5330: push(@rolecodes,$$role);
5331: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5332: $env{'user.name'});
5333: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5334: (undef,my $group_privs) = split(/\//,$trole);
5335: $group_privs = &unescape($group_privs);
5336: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5337: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5338: &get_groups_roles($tdomain,$trest,
5339: \%course_roles,\@rolecodes,
5340: \%groups_roles);
5341: } else {
5342: push(@rolecodes,$$role);
5343: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5344: }
5345: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5346: &appenv(\%userroles,\@rolecodes);
5347: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5348: }
5349: }
5350: $$tstatus = 'is';
5351: }
5352: }
5353: if ($$tend) {
5354: if ($$tend<$update) {
5355: $$tstatus='expired';
5356: } elsif ($$tend<$now) {
5357: $$tstatus='will_not';
5358: }
5359: }
5360: }
5361: }
5362: }
5363:
5364: sub get_groups_roles {
5365: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5366: return unless((ref($cdom_courseroles) eq 'HASH') &&
5367: (ref($rolecodes) eq 'ARRAY') &&
5368: (ref($groups_roles) eq 'HASH'));
5369: if (keys(%{$cdom_courseroles}) > 0) {
5370: my ($cnum) = ($rest =~ /^($match_courseid)/);
5371: if ($cdom ne '' && $cnum ne '') {
5372: foreach my $key (keys(%{$cdom_courseroles})) {
5373: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5374: my $crsrole = $1;
5375: my $crssec = $2;
5376: if ($crsrole =~ /^cr/) {
5377: unless (grep(/^cr$/,@{$rolecodes})) {
5378: push(@{$rolecodes},'cr');
5379: }
5380: } else {
5381: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5382: push(@{$rolecodes},$crsrole);
5383: }
5384: }
5385: my $rolekey = "$crsrole./$cdom/$cnum";
5386: if ($crssec ne '') {
5387: $rolekey .= "/$crssec";
5388: }
5389: $rolekey .= './';
5390: $groups_roles->{$rolekey} = $rolecodes;
5391: }
5392: }
5393: }
5394: }
5395: return;
5396: }
5397:
5398: sub delete_env_groupprivs {
5399: my ($where,$courseroles,$possroles) = @_;
5400: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5401: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5402: unless (ref($courseroles->{$udom}) eq 'HASH') {
5403: %{$courseroles->{$udom}} =
5404: &get_my_roles('','','userroles',['active'],
5405: $possroles,[$udom],1);
5406: }
5407: if (ref($courseroles->{$udom}) eq 'HASH') {
5408: foreach my $item (keys(%{$courseroles->{$udom}})) {
5409: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5410: my $area = '/'.$cdom.'/'.$cnum;
5411: my $privkey = "user.priv.$crsrole.$area";
5412: if ($crssec ne '') {
5413: $privkey .= '/'.$crssec;
5414: }
5415: $privkey .= ".$area/$group";
5416: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5417: }
5418: }
5419: return;
5420: }
5421:
5422: sub check_adhoc_privs {
5423: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5424: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5425: my $setprivs;
5426: if ($env{$cckey}) {
5427: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5428: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5429: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5430: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5431: $setprivs = 1;
5432: }
5433: } else {
5434: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5435: $setprivs = 1;
5436: }
5437: return $setprivs;
5438: }
5439:
5440: sub set_adhoc_privileges {
5441: # role can be cc or ca
5442: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5443: my $area = '/'.$dcdom.'/'.$pickedcourse;
5444: my $spec = $role.'.'.$area;
5445: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5446: $env{'user.name'},1);
5447: my %ccrole = ();
5448: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5449: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5450: &appenv(\%userroles,[$role,'cm']);
5451: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5452: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5453: &appenv( {'request.role' => $spec,
5454: 'request.role.domain' => $dcdom,
5455: 'request.course.sec' => ''
5456: }
5457: );
5458: my $tadv=0;
5459: if (&allowed('adv') eq 'F') { $tadv=1; }
5460: &appenv({'request.role.adv' => $tadv});
5461: }
5462: }
5463:
5464: # --------------------------------------------------------------- get interface
5465:
5466: sub get {
5467: my ($namespace,$storearr,$udomain,$uname)=@_;
5468: my $items='';
5469: foreach my $item (@$storearr) {
5470: $items.=&escape($item).'&';
5471: }
5472: $items=~s/\&$//;
5473: if (!$udomain) { $udomain=$env{'user.domain'}; }
5474: if (!$uname) { $uname=$env{'user.name'}; }
5475: my $uhome=&homeserver($uname,$udomain);
5476:
5477: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5478: my @pairs=split(/\&/,$rep);
5479: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5480: return @pairs;
5481: }
5482: my %returnhash=();
5483: my $i=0;
5484: foreach my $item (@$storearr) {
5485: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5486: $i++;
5487: }
5488: return %returnhash;
5489: }
5490:
5491: # --------------------------------------------------------------- del interface
5492:
5493: sub del {
5494: my ($namespace,$storearr,$udomain,$uname)=@_;
5495: my $items='';
5496: foreach my $item (@$storearr) {
5497: $items.=&escape($item).'&';
5498: }
5499:
5500: $items=~s/\&$//;
5501: if (!$udomain) { $udomain=$env{'user.domain'}; }
5502: if (!$uname) { $uname=$env{'user.name'}; }
5503: my $uhome=&homeserver($uname,$udomain);
5504: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5505: }
5506:
5507: # -------------------------------------------------------------- dump interface
5508:
5509: sub unserialize {
5510: my ($rep, $escapedkeys) = @_;
5511:
5512: return {} if $rep =~ /^error/;
5513:
5514: my %returnhash=();
5515: foreach my $item (split /\&/, $rep) {
5516: my ($key, $value) = split(/=/, $item, 2);
5517: $key = unescape($key) unless $escapedkeys;
5518: next if $key =~ /^error: 2 /;
5519: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5520: }
5521: #return %returnhash;
5522: return \%returnhash;
5523: }
5524:
5525: # see Lond::dump_with_regexp
5526: # if $escapedkeys hash keys won't get unescaped.
5527: sub dump {
5528: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5529: if (!$udomain) { $udomain=$env{'user.domain'}; }
5530: if (!$uname) { $uname=$env{'user.name'}; }
5531: my $uhome=&homeserver($uname,$udomain);
5532:
5533: my $reply;
5534: if (grep { $_ eq $uhome } current_machine_ids()) {
5535: # user is hosted on this machine
5536: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5537: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5538: return %{unserialize($reply, $escapedkeys)};
5539: }
5540: if ($regexp) {
5541: $regexp=&escape($regexp);
5542: } else {
5543: $regexp='.';
5544: }
5545: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5546: my @pairs=split(/\&/,$rep);
5547: my %returnhash=();
5548: if (!($rep =~ /^error/ )) {
5549: foreach my $item (@pairs) {
5550: my ($key,$value)=split(/=/,$item,2);
5551: $key = unescape($key) unless $escapedkeys;
5552: #$key = &unescape($key);
5553: next if ($key =~ /^error: 2 /);
5554: $returnhash{$key}=&thaw_unescape($value);
5555: }
5556: }
5557: return %returnhash;
5558: }
5559:
5560:
5561: # --------------------------------------------------------- dumpstore interface
5562:
5563: sub dumpstore {
5564: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5565: # same as dump but keys must be escaped. They may contain colon separated
5566: # lists of values that may themself contain colons (e.g. symbs).
5567: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5568: }
5569:
5570: # -------------------------------------------------------------- keys interface
5571:
5572: sub getkeys {
5573: my ($namespace,$udomain,$uname)=@_;
5574: if (!$udomain) { $udomain=$env{'user.domain'}; }
5575: if (!$uname) { $uname=$env{'user.name'}; }
5576: my $uhome=&homeserver($uname,$udomain);
5577: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5578: my @keyarray=();
5579: foreach my $key (split(/\&/,$rep)) {
5580: next if ($key =~ /^error: 2 /);
5581: push(@keyarray,&unescape($key));
5582: }
5583: return @keyarray;
5584: }
5585:
5586: # --------------------------------------------------------------- currentdump
5587: sub currentdump {
5588: my ($courseid,$sdom,$sname)=@_;
5589: $courseid = $env{'request.course.id'} if (! defined($courseid));
5590: $sdom = $env{'user.domain'} if (! defined($sdom));
5591: $sname = $env{'user.name'} if (! defined($sname));
5592: my $uhome = &homeserver($sname,$sdom);
5593: my $rep;
5594:
5595: if (grep { $_ eq $uhome } current_machine_ids()) {
5596: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5597: $courseid)));
5598: } else {
5599: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5600: }
5601:
5602: return if ($rep =~ /^(error:|no_such_host)/);
5603: #
5604: my %returnhash=();
5605: #
5606: if ($rep eq "unknown_cmd") {
5607: # an old lond will not know currentdump
5608: # Do a dump and make it look like a currentdump
5609: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5610: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5611: my %hash = @tmp;
5612: @tmp=();
5613: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5614: } else {
5615: my @pairs=split(/\&/,$rep);
5616: foreach my $pair (@pairs) {
5617: my ($key,$value)=split(/=/,$pair,2);
5618: my ($symb,$param) = split(/:/,$key);
5619: $returnhash{&unescape($symb)}->{&unescape($param)} =
5620: &thaw_unescape($value);
5621: }
5622: }
5623: return %returnhash;
5624: }
5625:
5626: sub convert_dump_to_currentdump{
5627: my %hash = %{shift()};
5628: my %returnhash;
5629: # Code ripped from lond, essentially. The only difference
5630: # here is the unescaping done by lonnet::dump(). Conceivably
5631: # we might run in to problems with parameter names =~ /^v\./
5632: while (my ($key,$value) = each(%hash)) {
5633: my ($v,$symb,$param) = split(/:/,$key);
5634: $symb = &unescape($symb);
5635: $param = &unescape($param);
5636: next if ($v eq 'version' || $symb eq 'keys');
5637: next if (exists($returnhash{$symb}) &&
5638: exists($returnhash{$symb}->{$param}) &&
5639: $returnhash{$symb}->{'v.'.$param} > $v);
5640: $returnhash{$symb}->{$param}=$value;
5641: $returnhash{$symb}->{'v.'.$param}=$v;
5642: }
5643: #
5644: # Remove all of the keys in the hashes which keep track of
5645: # the version of the parameter.
5646: while (my ($symb,$param_hash) = each(%returnhash)) {
5647: # use a foreach because we are going to delete from the hash.
5648: foreach my $key (keys(%$param_hash)) {
5649: delete($param_hash->{$key}) if ($key =~ /^v\./);
5650: }
5651: }
5652: return \%returnhash;
5653: }
5654:
5655: # ------------------------------------------------------ critical inc interface
5656:
5657: sub cinc {
5658: return &inc(@_,'critical');
5659: }
5660:
5661: # --------------------------------------------------------------- inc interface
5662:
5663: sub inc {
5664: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5665: if (!$udomain) { $udomain=$env{'user.domain'}; }
5666: if (!$uname) { $uname=$env{'user.name'}; }
5667: my $uhome=&homeserver($uname,$udomain);
5668: my $items='';
5669: if (! ref($store)) {
5670: # got a single value, so use that instead
5671: $items = &escape($store).'=&';
5672: } elsif (ref($store) eq 'SCALAR') {
5673: $items = &escape($$store).'=&';
5674: } elsif (ref($store) eq 'ARRAY') {
5675: $items = join('=&',map {&escape($_);} @{$store});
5676: } elsif (ref($store) eq 'HASH') {
5677: while (my($key,$value) = each(%{$store})) {
5678: $items.= &escape($key).'='.&escape($value).'&';
5679: }
5680: }
5681: $items=~s/\&$//;
5682: if ($critical) {
5683: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5684: } else {
5685: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5686: }
5687: }
5688:
5689: # --------------------------------------------------------------- put interface
5690:
5691: sub put {
5692: my ($namespace,$storehash,$udomain,$uname)=@_;
5693: if (!$udomain) { $udomain=$env{'user.domain'}; }
5694: if (!$uname) { $uname=$env{'user.name'}; }
5695: my $uhome=&homeserver($uname,$udomain);
5696: my $items='';
5697: foreach my $item (keys(%$storehash)) {
5698: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5699: }
5700: $items=~s/\&$//;
5701: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5702: }
5703:
5704: # ------------------------------------------------------------ newput interface
5705:
5706: sub newput {
5707: my ($namespace,$storehash,$udomain,$uname)=@_;
5708: if (!$udomain) { $udomain=$env{'user.domain'}; }
5709: if (!$uname) { $uname=$env{'user.name'}; }
5710: my $uhome=&homeserver($uname,$udomain);
5711: my $items='';
5712: foreach my $key (keys(%$storehash)) {
5713: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5714: }
5715: $items=~s/\&$//;
5716: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5717: }
5718:
5719: # --------------------------------------------------------- putstore interface
5720:
5721: sub putstore {
5722: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5723: if (!$udomain) { $udomain=$env{'user.domain'}; }
5724: if (!$uname) { $uname=$env{'user.name'}; }
5725: my $uhome=&homeserver($uname,$udomain);
5726: my $items='';
5727: foreach my $key (keys(%$storehash)) {
5728: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5729: }
5730: $items=~s/\&$//;
5731: my $esc_symb=&escape($symb);
5732: my $esc_v=&escape($version);
5733: my $reply =
5734: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5735: $uhome);
5736: if ($reply eq 'unknown_cmd') {
5737: # gfall back to way things use to be done
5738: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5739: $uname);
5740: }
5741: return $reply;
5742: }
5743:
5744: sub old_putstore {
5745: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5746: if (!$udomain) { $udomain=$env{'user.domain'}; }
5747: if (!$uname) { $uname=$env{'user.name'}; }
5748: my $uhome=&homeserver($uname,$udomain);
5749: my %newstorehash;
5750: foreach my $item (keys(%$storehash)) {
5751: my $key = $version.':'.&escape($symb).':'.$item;
5752: $newstorehash{$key} = $storehash->{$item};
5753: }
5754: my $items='';
5755: my %allitems = ();
5756: foreach my $item (keys(%newstorehash)) {
5757: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5758: my $key = $1.':keys:'.$2;
5759: $allitems{$key} .= $3.':';
5760: }
5761: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5762: }
5763: foreach my $item (keys(%allitems)) {
5764: $allitems{$item} =~ s/\:$//;
5765: $items.= $item.'='.$allitems{$item}.'&';
5766: }
5767: $items=~s/\&$//;
5768: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5769: }
5770:
5771: # ------------------------------------------------------ critical put interface
5772:
5773: sub cput {
5774: my ($namespace,$storehash,$udomain,$uname)=@_;
5775: if (!$udomain) { $udomain=$env{'user.domain'}; }
5776: if (!$uname) { $uname=$env{'user.name'}; }
5777: my $uhome=&homeserver($uname,$udomain);
5778: my $items='';
5779: foreach my $item (keys(%$storehash)) {
5780: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5781: }
5782: $items=~s/\&$//;
5783: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5784: }
5785:
5786: # -------------------------------------------------------------- eget interface
5787:
5788: sub eget {
5789: my ($namespace,$storearr,$udomain,$uname)=@_;
5790: my $items='';
5791: foreach my $item (@$storearr) {
5792: $items.=&escape($item).'&';
5793: }
5794: $items=~s/\&$//;
5795: if (!$udomain) { $udomain=$env{'user.domain'}; }
5796: if (!$uname) { $uname=$env{'user.name'}; }
5797: my $uhome=&homeserver($uname,$udomain);
5798: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5799: my @pairs=split(/\&/,$rep);
5800: my %returnhash=();
5801: my $i=0;
5802: foreach my $item (@$storearr) {
5803: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5804: $i++;
5805: }
5806: return %returnhash;
5807: }
5808:
5809: # ------------------------------------------------------------ tmpput interface
5810: sub tmpput {
5811: my ($storehash,$server,$context)=@_;
5812: my $items='';
5813: foreach my $item (keys(%$storehash)) {
5814: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5815: }
5816: $items=~s/\&$//;
5817: if (defined($context)) {
5818: $items .= ':'.&escape($context);
5819: }
5820: return &reply("tmpput:$items",$server);
5821: }
5822:
5823: # ------------------------------------------------------------ tmpget interface
5824: sub tmpget {
5825: my ($token,$server)=@_;
5826: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5827: my $rep=&reply("tmpget:$token",$server);
5828: my %returnhash;
5829: foreach my $item (split(/\&/,$rep)) {
5830: my ($key,$value)=split(/=/,$item);
5831: next if ($key =~ /^error: 2 /);
5832: $returnhash{&unescape($key)}=&thaw_unescape($value);
5833: }
5834: return %returnhash;
5835: }
5836:
5837: # ------------------------------------------------------------ tmpdel interface
5838: sub tmpdel {
5839: my ($token,$server)=@_;
5840: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5841: return &reply("tmpdel:$token",$server);
5842: }
5843:
5844: # ------------------------------------------------------------ get_timebased_id
5845:
5846: sub get_timebased_id {
5847: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
5848: $maxtries) = @_;
5849: my ($newid,$error,$dellock);
5850: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
5851: return ('','ok','invalid call to get suffix');
5852: }
5853:
5854: # set defaults for any optional args for which values were not supplied
5855: if ($who eq '') {
5856: $who = $env{'user.name'}.':'.$env{'user.domain'};
5857: }
5858: if (!$locktries) {
5859: $locktries = 3;
5860: }
5861: if (!$maxtries) {
5862: $maxtries = 10;
5863: }
5864:
5865: if (($cdom eq '') || ($cnum eq '')) {
5866: if ($env{'request.course.id'}) {
5867: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5868: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5869: }
5870: if (($cdom eq '') || ($cnum eq '')) {
5871: return ('','ok','call to get suffix not in course context');
5872: }
5873: }
5874:
5875: # construct locking item
5876: my $lockhash = {
5877: $prefix."\0".'locked_'.$keyid => $who,
5878: };
5879: my $tries = 0;
5880:
5881: # attempt to get lock on nohist_$namespace file
5882: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5883: while (($gotlock ne 'ok') && $tries <$locktries) {
5884: $tries ++;
5885: sleep 1;
5886: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5887: }
5888:
5889: # attempt to get unique identifier, based on current timestamp
5890: if ($gotlock eq 'ok') {
5891: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
5892: my $id = time;
5893: $newid = $id;
5894: my $idtries = 0;
5895: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
5896: if ($idtype eq 'concat') {
5897: $newid = $id.$idtries;
5898: } else {
5899: $newid ++;
5900: }
5901: $idtries ++;
5902: }
5903: if (!exists($inuse{$prefix."\0".$newid})) {
5904: my %new_item = (
5905: $prefix."\0".$newid => $who,
5906: );
5907: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
5908: $cdom,$cnum);
5909: if ($putresult ne 'ok') {
5910: undef($newid);
5911: $error = 'error saving new item: '.$putresult;
5912: }
5913: } else {
5914: $error = ('error: no unique suffix available for the new item ');
5915: }
5916: # remove lock
5917: my @del_lock = ($prefix."\0".'locked_'.$keyid);
5918: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
5919: } else {
5920: $error = "error: could not obtain lockfile\n";
5921: $dellock = 'ok';
5922: }
5923: return ($newid,$dellock,$error);
5924: }
5925:
5926: # -------------------------------------------------- portfolio access checking
5927:
5928: sub portfolio_access {
5929: my ($requrl) = @_;
5930: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5931: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5932: if ($result) {
5933: my %setters;
5934: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5935: my ($startblock,$endblock) =
5936: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5937: if ($startblock && $endblock) {
5938: return 'B';
5939: }
5940: } else {
5941: my ($startblock,$endblock) =
5942: &Apache::loncommon::blockcheck(\%setters,'port');
5943: if ($startblock && $endblock) {
5944: return 'B';
5945: }
5946: }
5947: }
5948: if ($result eq 'ok') {
5949: return 'F';
5950: } elsif ($result =~ /^[^:]+:guest_/) {
5951: return 'A';
5952: }
5953: return '';
5954: }
5955:
5956: sub get_portfolio_access {
5957: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5958:
5959: if (!ref($access_hash)) {
5960: my $current_perms = &get_portfile_permissions($udom,$unum);
5961: my %access_controls = &get_access_controls($current_perms,$group,
5962: $file_name);
5963: $access_hash = $access_controls{$file_name};
5964: }
5965:
5966: my ($public,$guest,@domains,@users,@courses,@groups);
5967: my $now = time;
5968: if (ref($access_hash) eq 'HASH') {
5969: foreach my $key (keys(%{$access_hash})) {
5970: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5971: if ($start > $now) {
5972: next;
5973: }
5974: if ($end && $end<$now) {
5975: next;
5976: }
5977: if ($scope eq 'public') {
5978: $public = $key;
5979: last;
5980: } elsif ($scope eq 'guest') {
5981: $guest = $key;
5982: } elsif ($scope eq 'domains') {
5983: push(@domains,$key);
5984: } elsif ($scope eq 'users') {
5985: push(@users,$key);
5986: } elsif ($scope eq 'course') {
5987: push(@courses,$key);
5988: } elsif ($scope eq 'group') {
5989: push(@groups,$key);
5990: }
5991: }
5992: if ($public) {
5993: return 'ok';
5994: }
5995: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5996: if ($guest) {
5997: return $guest;
5998: }
5999: } else {
6000: if (@domains > 0) {
6001: foreach my $domkey (@domains) {
6002: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6003: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6004: return 'ok';
6005: }
6006: }
6007: }
6008: }
6009: if (@users > 0) {
6010: foreach my $userkey (@users) {
6011: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6012: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6013: if (ref($item) eq 'HASH') {
6014: if (($item->{'uname'} eq $env{'user.name'}) &&
6015: ($item->{'udom'} eq $env{'user.domain'})) {
6016: return 'ok';
6017: }
6018: }
6019: }
6020: }
6021: }
6022: }
6023: my %roleshash;
6024: my @courses_and_groups = @courses;
6025: push(@courses_and_groups,@groups);
6026: if (@courses_and_groups > 0) {
6027: my (%allgroups,%allroles);
6028: my ($start,$end,$role,$sec,$group);
6029: foreach my $envkey (%env) {
6030: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6031: my $cid = $2.'_'.$3;
6032: if ($1 eq 'gr') {
6033: $group = $4;
6034: $allgroups{$cid}{$group} = $env{$envkey};
6035: } else {
6036: if ($4 eq '') {
6037: $sec = 'none';
6038: } else {
6039: $sec = $4;
6040: }
6041: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6042: }
6043: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6044: my $cid = $2.'_'.$3;
6045: if ($4 eq '') {
6046: $sec = 'none';
6047: } else {
6048: $sec = $4;
6049: }
6050: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6051: }
6052: }
6053: if (keys(%allroles) == 0) {
6054: return;
6055: }
6056: foreach my $key (@courses_and_groups) {
6057: my %content = %{$$access_hash{$key}};
6058: my $cnum = $content{'number'};
6059: my $cdom = $content{'domain'};
6060: my $cid = $cdom.'_'.$cnum;
6061: if (!exists($allroles{$cid})) {
6062: next;
6063: }
6064: foreach my $role_id (keys(%{$content{'roles'}})) {
6065: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6066: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6067: my @status = @{$content{'roles'}{$role_id}{'access'}};
6068: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6069: foreach my $role (keys(%{$allroles{$cid}})) {
6070: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6071: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6072: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6073: if (grep/^all$/,@sections) {
6074: return 'ok';
6075: } else {
6076: if (grep/^$sec$/,@sections) {
6077: return 'ok';
6078: }
6079: }
6080: }
6081: }
6082: if (keys(%{$allgroups{$cid}}) == 0) {
6083: if (grep/^none$/,@groups) {
6084: return 'ok';
6085: }
6086: } else {
6087: if (grep/^all$/,@groups) {
6088: return 'ok';
6089: }
6090: foreach my $group (keys(%{$allgroups{$cid}})) {
6091: if (grep/^$group$/,@groups) {
6092: return 'ok';
6093: }
6094: }
6095: }
6096: }
6097: }
6098: }
6099: }
6100: }
6101: if ($guest) {
6102: return $guest;
6103: }
6104: }
6105: }
6106: return;
6107: }
6108:
6109: sub course_group_datechecker {
6110: my ($dates,$now,$status) = @_;
6111: my ($start,$end) = split(/\./,$dates);
6112: if (!$start && !$end) {
6113: return 'ok';
6114: }
6115: if (grep/^active$/,@{$status}) {
6116: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6117: return 'ok';
6118: }
6119: }
6120: if (grep/^previous$/,@{$status}) {
6121: if ($end > $now ) {
6122: return 'ok';
6123: }
6124: }
6125: if (grep/^future$/,@{$status}) {
6126: if ($start > $now) {
6127: return 'ok';
6128: }
6129: }
6130: return;
6131: }
6132:
6133: sub parse_portfolio_url {
6134: my ($url) = @_;
6135:
6136: my ($type,$udom,$unum,$group,$file_name);
6137:
6138: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6139: $type = 1;
6140: $udom = $1;
6141: $unum = $2;
6142: $file_name = $3;
6143: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6144: $type = 2;
6145: $udom = $1;
6146: $unum = $2;
6147: $group = $3;
6148: $file_name = $3.'/'.$4;
6149: }
6150: if (wantarray) {
6151: return ($type,$udom,$unum,$file_name,$group);
6152: }
6153: return $type;
6154: }
6155:
6156: sub is_portfolio_url {
6157: my ($url) = @_;
6158: return scalar(&parse_portfolio_url($url));
6159: }
6160:
6161: sub is_portfolio_file {
6162: my ($file) = @_;
6163: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6164: return 1;
6165: }
6166: return;
6167: }
6168:
6169: sub usertools_access {
6170: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6171: my ($access,%tools);
6172: if ($context eq '') {
6173: $context = 'tools';
6174: }
6175: if ($context eq 'requestcourses') {
6176: %tools = (
6177: official => 1,
6178: unofficial => 1,
6179: community => 1,
6180: );
6181: } elsif ($context eq 'requestauthor') {
6182: %tools = (
6183: requestauthor => 1,
6184: );
6185: } else {
6186: %tools = (
6187: aboutme => 1,
6188: blog => 1,
6189: webdav => 1,
6190: portfolio => 1,
6191: );
6192: }
6193: return if (!defined($tools{$tool}));
6194:
6195: if ((!defined($udom)) || (!defined($uname))) {
6196: $udom = $env{'user.domain'};
6197: $uname = $env{'user.name'};
6198: }
6199:
6200: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6201: if ($action ne 'reload') {
6202: if ($context eq 'requestcourses') {
6203: return $env{'environment.canrequest.'.$tool};
6204: } elsif ($context eq 'requestauthor') {
6205: return $env{'environment.canrequest.author'};
6206: } else {
6207: return $env{'environment.availabletools.'.$tool};
6208: }
6209: }
6210: }
6211:
6212: my ($toolstatus,$inststatus,$envkey);
6213: if ($context eq 'requestauthor') {
6214: $envkey = $context;
6215: } else {
6216: $envkey = $context.'.'.$tool;
6217: }
6218:
6219: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6220: ($action ne 'reload')) {
6221: $toolstatus = $env{'environment.'.$envkey};
6222: $inststatus = $env{'environment.inststatus'};
6223: } else {
6224: if (ref($userenvref) eq 'HASH') {
6225: $toolstatus = $userenvref->{$envkey};
6226: $inststatus = $userenvref->{'inststatus'};
6227: } else {
6228: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6229: $toolstatus = $userenv{$envkey};
6230: $inststatus = $userenv{'inststatus'};
6231: }
6232: }
6233:
6234: if ($toolstatus ne '') {
6235: if ($toolstatus) {
6236: $access = 1;
6237: } else {
6238: $access = 0;
6239: }
6240: return $access;
6241: }
6242:
6243: my ($is_adv,%domdef);
6244: if (ref($is_advref) eq 'HASH') {
6245: $is_adv = $is_advref->{'is_adv'};
6246: } else {
6247: $is_adv = &is_advanced_user($udom,$uname);
6248: }
6249: if (ref($domdefref) eq 'HASH') {
6250: %domdef = %{$domdefref};
6251: } else {
6252: %domdef = &get_domain_defaults($udom);
6253: }
6254: if (ref($domdef{$tool}) eq 'HASH') {
6255: if ($is_adv) {
6256: if ($domdef{$tool}{'_LC_adv'} ne '') {
6257: if ($domdef{$tool}{'_LC_adv'}) {
6258: $access = 1;
6259: } else {
6260: $access = 0;
6261: }
6262: return $access;
6263: }
6264: }
6265: if ($inststatus ne '') {
6266: my ($hasaccess,$hasnoaccess);
6267: foreach my $affiliation (split(/:/,$inststatus)) {
6268: if ($domdef{$tool}{$affiliation} ne '') {
6269: if ($domdef{$tool}{$affiliation}) {
6270: $hasaccess = 1;
6271: } else {
6272: $hasnoaccess = 1;
6273: }
6274: }
6275: }
6276: if ($hasaccess || $hasnoaccess) {
6277: if ($hasaccess) {
6278: $access = 1;
6279: } elsif ($hasnoaccess) {
6280: $access = 0;
6281: }
6282: return $access;
6283: }
6284: } else {
6285: if ($domdef{$tool}{'default'} ne '') {
6286: if ($domdef{$tool}{'default'}) {
6287: $access = 1;
6288: } elsif ($domdef{$tool}{'default'} == 0) {
6289: $access = 0;
6290: }
6291: return $access;
6292: }
6293: }
6294: } else {
6295: if (($context eq 'tools') && ($tool ne 'webdav')) {
6296: $access = 1;
6297: } else {
6298: $access = 0;
6299: }
6300: return $access;
6301: }
6302: }
6303:
6304: sub is_course_owner {
6305: my ($cdom,$cnum,$udom,$uname) = @_;
6306: if (($udom eq '') || ($uname eq '')) {
6307: $udom = $env{'user.domain'};
6308: $uname = $env{'user.name'};
6309: }
6310: unless (($udom eq '') || ($uname eq '')) {
6311: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6312: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6313: return 1;
6314: } else {
6315: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6316: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6317: return 1;
6318: }
6319: }
6320: }
6321: }
6322: return;
6323: }
6324:
6325: sub is_advanced_user {
6326: my ($udom,$uname) = @_;
6327: if ($udom ne '' && $uname ne '') {
6328: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6329: if (wantarray) {
6330: return ($env{'user.adv'},$env{'user.author'});
6331: } else {
6332: return $env{'user.adv'};
6333: }
6334: }
6335: }
6336: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6337: my %allroles;
6338: my ($is_adv,$is_author);
6339: foreach my $role (keys(%roleshash)) {
6340: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6341: my $area = '/'.$tdomain.'/'.$trest;
6342: if ($sec ne '') {
6343: $area .= '/'.$sec;
6344: }
6345: if (($area ne '') && ($trole ne '')) {
6346: my $spec=$trole.'.'.$area;
6347: if ($trole =~ /^cr\//) {
6348: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6349: } elsif ($trole ne 'gr') {
6350: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6351: }
6352: if ($trole eq 'au') {
6353: $is_author = 1;
6354: }
6355: }
6356: }
6357: foreach my $role (keys(%allroles)) {
6358: last if ($is_adv);
6359: foreach my $item (split(/:/,$allroles{$role})) {
6360: if ($item ne '') {
6361: my ($privilege,$restrictions)=split(/&/,$item);
6362: if ($privilege eq 'adv') {
6363: $is_adv = 1;
6364: last;
6365: }
6366: }
6367: }
6368: }
6369: if (wantarray) {
6370: return ($is_adv,$is_author);
6371: }
6372: return $is_adv;
6373: }
6374:
6375: sub check_can_request {
6376: my ($dom,$can_request,$request_domains) = @_;
6377: my $canreq = 0;
6378: my ($types,$typename) = &Apache::loncommon::course_types();
6379: my @options = ('approval','validate','autolimit');
6380: my $optregex = join('|',@options);
6381: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6382: foreach my $type (@{$types}) {
6383: if (&usertools_access($env{'user.name'},
6384: $env{'user.domain'},
6385: $type,undef,'requestcourses')) {
6386: $canreq ++;
6387: if (ref($request_domains) eq 'HASH') {
6388: push(@{$request_domains->{$type}},$env{'user.domain'});
6389: }
6390: if ($dom eq $env{'user.domain'}) {
6391: $can_request->{$type} = 1;
6392: }
6393: }
6394: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6395: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6396: if (@curr > 0) {
6397: foreach my $item (@curr) {
6398: if (ref($request_domains) eq 'HASH') {
6399: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6400: if ($otherdom ne '') {
6401: if (ref($request_domains->{$type}) eq 'ARRAY') {
6402: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6403: push(@{$request_domains->{$type}},$otherdom);
6404: }
6405: } else {
6406: push(@{$request_domains->{$type}},$otherdom);
6407: }
6408: }
6409: }
6410: }
6411: unless($dom eq $env{'user.domain'}) {
6412: $canreq ++;
6413: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6414: $can_request->{$type} = 1;
6415: }
6416: }
6417: }
6418: }
6419: }
6420: }
6421: return $canreq;
6422: }
6423:
6424: # ---------------------------------------------- Custom access rule evaluation
6425:
6426: sub customaccess {
6427: my ($priv,$uri)=@_;
6428: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6429: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6430: $udom = &LONCAPA::clean_domain($udom);
6431: $ucrs = &LONCAPA::clean_username($ucrs);
6432: my $access=0;
6433: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6434: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6435: if ($type eq 'user') {
6436: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6437: my ($tdom,$tuname)=split(m{/},$scope);
6438: if ($tdom) {
6439: if ($tdom ne $env{'user.domain'}) { next; }
6440: }
6441: if ($tuname) {
6442: if ($tuname ne $env{'user.name'}) { next; }
6443: }
6444: $access=($effect eq 'allow');
6445: last;
6446: }
6447: } else {
6448: if ($role) {
6449: if ($role ne $urole) { next; }
6450: }
6451: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6452: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6453: if ($tdom) {
6454: if ($tdom ne $udom) { next; }
6455: }
6456: if ($tcrs) {
6457: if ($tcrs ne $ucrs) { next; }
6458: }
6459: if ($tsec) {
6460: if ($tsec ne $usec) { next; }
6461: }
6462: $access=($effect eq 'allow');
6463: last;
6464: }
6465: if ($realm eq '' && $role eq '') {
6466: $access=($effect eq 'allow');
6467: }
6468: }
6469: }
6470: return $access;
6471: }
6472:
6473: # ------------------------------------------------- Check for a user privilege
6474:
6475: sub allowed {
6476: my ($priv,$uri,$symb,$role)=@_;
6477: my $ver_orguri=$uri;
6478: $uri=&deversion($uri);
6479: my $orguri=$uri;
6480: $uri=&declutter($uri);
6481:
6482: if ($priv eq 'evb') {
6483: # Evade communication block restrictions for specified role in a course
6484: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6485: return $1;
6486: } else {
6487: return;
6488: }
6489: }
6490:
6491: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6492: # Free bre access to adm and meta resources
6493: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6494: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6495: && ($priv eq 'bre')) {
6496: return 'F';
6497: }
6498:
6499: # Free bre access to user's own portfolio contents
6500: my ($space,$domain,$name,@dir)=split('/',$uri);
6501: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6502: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6503: my %setters;
6504: my ($startblock,$endblock) =
6505: &Apache::loncommon::blockcheck(\%setters,'port');
6506: if ($startblock && $endblock) {
6507: return 'B';
6508: } else {
6509: return 'F';
6510: }
6511: }
6512:
6513: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6514: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6515: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6516: if (exists($env{'request.course.id'})) {
6517: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6518: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6519: if (($domain eq $cdom) && ($name eq $cnum)) {
6520: my $courseprivid=$env{'request.course.id'};
6521: $courseprivid=~s/\_/\//;
6522: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6523: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6524: return $1;
6525: } else {
6526: if ($env{'request.course.sec'}) {
6527: $courseprivid.='/'.$env{'request.course.sec'};
6528: }
6529: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6530: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6531: return $2;
6532: }
6533: }
6534: }
6535: }
6536: }
6537:
6538: # Free bre to public access
6539:
6540: if ($priv eq 'bre') {
6541: my $copyright=&metadata($uri,'copyright');
6542: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6543: return 'F';
6544: }
6545: if ($copyright eq 'priv') {
6546: $uri=~/([^\/]+)\/([^\/]+)\//;
6547: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6548: return '';
6549: }
6550: }
6551: if ($copyright eq 'domain') {
6552: $uri=~/([^\/]+)\/([^\/]+)\//;
6553: unless (($env{'user.domain'} eq $1) ||
6554: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6555: return '';
6556: }
6557: }
6558: if ($env{'request.role'}=~ /li\.\//) {
6559: # Library role, so allow browsing of resources in this domain.
6560: return 'F';
6561: }
6562: if ($copyright eq 'custom') {
6563: unless (&customaccess($priv,$uri)) { return ''; }
6564: }
6565: }
6566: # Domain coordinator is trying to create a course
6567: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6568: # uri is the requested domain in this case.
6569: # comparison to 'request.role.domain' shows if the user has selected
6570: # a role of dc for the domain in question.
6571: return 'F' if ($uri eq $env{'request.role.domain'});
6572: }
6573:
6574: my $thisallowed='';
6575: my $statecond=0;
6576: my $courseprivid='';
6577:
6578: my $ownaccess;
6579: # Community Coordinator or Assistant Co-author browsing resource space.
6580: if (($priv eq 'bro') && ($env{'user.author'})) {
6581: if ($uri eq '') {
6582: $ownaccess = 1;
6583: } else {
6584: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6585: my $udom = $env{'user.domain'};
6586: my $uname = $env{'user.name'};
6587: if ($uri =~ m{^\Q$udom\E/?$}) {
6588: $ownaccess = 1;
6589: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6590: unless ($uri =~ m{\.\./}) {
6591: $ownaccess = 1;
6592: }
6593: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6594: my $now = time;
6595: if ($uri =~ m{^([^/]+)/?$}) {
6596: my $adom = $1;
6597: foreach my $key (keys(%env)) {
6598: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6599: my ($start,$end) = split('.',$env{$key});
6600: if (($now >= $start) && (!$end || $end < $now)) {
6601: $ownaccess = 1;
6602: last;
6603: }
6604: }
6605: }
6606: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6607: my $adom = $1;
6608: my $aname = $2;
6609: foreach my $role ('ca','aa') {
6610: if ($env{"user.role.$role./$adom/$aname"}) {
6611: my ($start,$end) =
6612: split('.',$env{"user.role.$role./$adom/$aname"});
6613: if (($now >= $start) && (!$end || $end < $now)) {
6614: $ownaccess = 1;
6615: last;
6616: }
6617: }
6618: }
6619: }
6620: }
6621: }
6622: }
6623: }
6624:
6625: # Course
6626:
6627: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6628: unless (($priv eq 'bro') && (!$ownaccess)) {
6629: $thisallowed.=$1;
6630: }
6631: }
6632:
6633: # Domain
6634:
6635: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6636: =~/\Q$priv\E\&([^\:]*)/) {
6637: unless (($priv eq 'bro') && (!$ownaccess)) {
6638: $thisallowed.=$1;
6639: }
6640: }
6641:
6642: # User who is not author or co-author might still be able to edit
6643: # resource of an author in the domain (e.g., if Domain Coordinator).
6644: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6645: (&allowed('mdc',$env{'request.course.id'}))) {
6646: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6647: $thisallowed.=$1;
6648: }
6649: }
6650:
6651: # Course: uri itself is a course
6652: my $courseuri=$uri;
6653: $courseuri=~s/\_(\d)/\/$1/;
6654: $courseuri=~s/^([^\/])/\/$1/;
6655:
6656: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6657: =~/\Q$priv\E\&([^\:]*)/) {
6658: unless (($priv eq 'bro') && (!$ownaccess)) {
6659: $thisallowed.=$1;
6660: }
6661: }
6662:
6663: # URI is an uploaded document for this course, default permissions don't matter
6664: # not allowing 'edit' access (editupload) to uploaded course docs
6665: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6666: $thisallowed='';
6667: my ($match)=&is_on_map($uri);
6668: if ($match) {
6669: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6670: =~/\Q$priv\E\&([^\:]*)/) {
6671: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6672: if (@blockers > 0) {
6673: $thisallowed = 'B';
6674: } else {
6675: $thisallowed.=$1;
6676: }
6677: }
6678: } else {
6679: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6680: if ($refuri) {
6681: if ($refuri =~ m|^/adm/|) {
6682: $thisallowed='F';
6683: } else {
6684: $refuri=&declutter($refuri);
6685: my ($match) = &is_on_map($refuri);
6686: if ($match) {
6687: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6688: if (@blockers > 0) {
6689: $thisallowed = 'B';
6690: } else {
6691: $thisallowed='F';
6692: }
6693: }
6694: }
6695: }
6696: }
6697: }
6698:
6699: if ($priv eq 'bre'
6700: && $thisallowed ne 'F'
6701: && $thisallowed ne '2'
6702: && &is_portfolio_url($uri)) {
6703: $thisallowed = &portfolio_access($uri);
6704: }
6705:
6706: # Full access at system, domain or course-wide level? Exit.
6707: if ($thisallowed=~/F/) {
6708: return 'F';
6709: }
6710:
6711: # If this is generating or modifying users, exit with special codes
6712:
6713: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6714: if (($priv eq 'cca') || ($priv eq 'caa')) {
6715: my ($audom,$auname)=split('/',$uri);
6716: # no author name given, so this just checks on the general right to make a co-author in this domain
6717: unless ($auname) { return $thisallowed; }
6718: # an author name is given, so we are about to actually make a co-author for a certain account
6719: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6720: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6721: ($audom ne $env{'request.role.domain'}))) { return ''; }
6722: }
6723: return $thisallowed;
6724: }
6725: #
6726: # Gathered so far: system, domain and course wide privileges
6727: #
6728: # Course: See if uri or referer is an individual resource that is part of
6729: # the course
6730:
6731: if ($env{'request.course.id'}) {
6732:
6733: $courseprivid=$env{'request.course.id'};
6734: if ($env{'request.course.sec'}) {
6735: $courseprivid.='/'.$env{'request.course.sec'};
6736: }
6737: $courseprivid=~s/\_/\//;
6738: my $checkreferer=1;
6739: my ($match,$cond)=&is_on_map($uri);
6740: if ($match) {
6741: $statecond=$cond;
6742: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6743: =~/\Q$priv\E\&([^\:]*)/) {
6744: my $value = $1;
6745: if ($priv eq 'bre') {
6746: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6747: if (@blockers > 0) {
6748: $thisallowed = 'B';
6749: } else {
6750: $thisallowed.=$value;
6751: }
6752: } else {
6753: $thisallowed.=$value;
6754: }
6755: $checkreferer=0;
6756: }
6757: }
6758:
6759: if ($checkreferer) {
6760: my $refuri=$env{'httpref.'.$orguri};
6761: unless ($refuri) {
6762: foreach my $key (keys(%env)) {
6763: if ($key=~/^httpref\..*\*/) {
6764: my $pattern=$key;
6765: $pattern=~s/^httpref\.\/res\///;
6766: $pattern=~s/\*/\[\^\/\]\+/g;
6767: $pattern=~s/\//\\\//g;
6768: if ($orguri=~/$pattern/) {
6769: $refuri=$env{$key};
6770: }
6771: }
6772: }
6773: }
6774:
6775: if ($refuri) {
6776: $refuri=&declutter($refuri);
6777: my ($match,$cond)=&is_on_map($refuri);
6778: if ($match) {
6779: my $refstatecond=$cond;
6780: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6781: =~/\Q$priv\E\&([^\:]*)/) {
6782: my $value = $1;
6783: if ($priv eq 'bre') {
6784: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6785: if (@blockers > 0) {
6786: $thisallowed = 'B';
6787: } else {
6788: $thisallowed.=$value;
6789: }
6790: } else {
6791: $thisallowed.=$value;
6792: }
6793: $uri=$refuri;
6794: $statecond=$refstatecond;
6795: }
6796: }
6797: }
6798: }
6799: }
6800:
6801: #
6802: # Gathered now: all privileges that could apply, and condition number
6803: #
6804: #
6805: # Full or no access?
6806: #
6807:
6808: if ($thisallowed=~/F/) {
6809: return 'F';
6810: }
6811:
6812: unless ($thisallowed) {
6813: return '';
6814: }
6815:
6816: # Restrictions exist, deal with them
6817: #
6818: # C:according to course preferences
6819: # R:according to resource settings
6820: # L:unless locked
6821: # X:according to user session state
6822: #
6823:
6824: # Possibly locked functionality, check all courses
6825: # Locks might take effect only after 10 minutes cache expiration for other
6826: # courses, and 2 minutes for current course
6827:
6828: my $envkey;
6829: if ($thisallowed=~/L/) {
6830: foreach $envkey (keys(%env)) {
6831: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6832: my $courseid=$2;
6833: my $roleid=$1.'.'.$2;
6834: $courseid=~s/^\///;
6835: my $expiretime=600;
6836: if ($env{'request.role'} eq $roleid) {
6837: $expiretime=120;
6838: }
6839: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6840: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6841: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6842: &coursedescription($courseid,{'freshen_cache' => 1});
6843: }
6844: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6845: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6846: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6847: &log($env{'user.domain'},$env{'user.name'},
6848: $env{'user.home'},
6849: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6850: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6851: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6852: return '';
6853: }
6854: }
6855: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6856: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6857: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6858: &log($env{'user.domain'},$env{'user.name'},
6859: $env{'user.home'},
6860: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6861: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6862: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6863: return '';
6864: }
6865: }
6866: }
6867: }
6868: }
6869:
6870: #
6871: # Rest of the restrictions depend on selected course
6872: #
6873:
6874: unless ($env{'request.course.id'}) {
6875: if ($thisallowed eq 'A') {
6876: return 'A';
6877: } elsif ($thisallowed eq 'B') {
6878: return 'B';
6879: } else {
6880: return '1';
6881: }
6882: }
6883:
6884: #
6885: # Now user is definitely in a course
6886: #
6887:
6888:
6889: # Course preferences
6890:
6891: if ($thisallowed=~/C/) {
6892: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6893: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6894: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6895: =~/\Q$rolecode\E/) {
6896: if (($priv ne 'pch') && ($priv ne 'plc')) {
6897: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6898: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6899: $env{'request.course.id'});
6900: }
6901: return '';
6902: }
6903:
6904: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6905: =~/\Q$unamedom\E/) {
6906: if (($priv ne 'pch') && ($priv ne 'plc')) {
6907: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6908: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6909: $env{'request.course.id'});
6910: }
6911: return '';
6912: }
6913: }
6914:
6915: # Resource preferences
6916:
6917: if ($thisallowed=~/R/) {
6918: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6919: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6920: if (($priv ne 'pch') && ($priv ne 'plc')) {
6921: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6922: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6923: }
6924: return '';
6925: }
6926: }
6927:
6928: # Restricted by state or randomout?
6929:
6930: if ($thisallowed=~/X/) {
6931: if ($env{'acc.randomout'}) {
6932: if (!$symb) { $symb=&symbread($uri,1); }
6933: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6934: return '';
6935: }
6936: }
6937: if (&condval($statecond)) {
6938: return '2';
6939: } else {
6940: return '';
6941: }
6942: }
6943:
6944: if ($thisallowed eq 'A') {
6945: return 'A';
6946: } elsif ($thisallowed eq 'B') {
6947: return 'B';
6948: }
6949: return 'F';
6950: }
6951:
6952: # ------------------------------------------- Check construction space access
6953:
6954: sub constructaccess {
6955: my ($url,$setpriv)=@_;
6956:
6957: # We do not allow editing of previous versions of files
6958: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6959:
6960: # Get username and domain from URL
6961: my ($ownername,$ownerdomain,$ownerhome);
6962:
6963: ($ownerdomain,$ownername) =
6964: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6965:
6966: # The URL does not really point to any authorspace, forget it
6967: unless (($ownername) && ($ownerdomain)) { return ''; }
6968:
6969: # Now we need to see if the user has access to the authorspace of
6970: # $ownername at $ownerdomain
6971:
6972: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6973: # Real author for this?
6974: $ownerhome = $env{'user.home'};
6975: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6976: return ($ownername,$ownerdomain,$ownerhome);
6977: }
6978: } else {
6979: # Co-author for this?
6980: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6981: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6982: $ownerhome = &homeserver($ownername,$ownerdomain);
6983: return ($ownername,$ownerdomain,$ownerhome);
6984: }
6985: }
6986:
6987: # We don't have any access right now. If we are not possibly going to do anything about this,
6988: # we might as well leave
6989: unless ($setpriv) { return ''; }
6990:
6991: # Backdoor access?
6992: my $allowed=&allowed('eco',$ownerdomain);
6993: # Nope
6994: unless ($allowed) { return ''; }
6995: # Looks like we may have access, but could be locked by the owner of the construction space
6996: if ($allowed eq 'U') {
6997: my %blocked=&get('environment',['domcoord.author'],
6998: $ownerdomain,$ownername);
6999: # Is blocked by owner
7000: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7001: }
7002: if (($allowed eq 'F') || ($allowed eq 'U')) {
7003: # Grant temporary access
7004: my $then=$env{'user.login.time'};
7005: my $update=$env{'user.update.time'};
7006: if (!$update) { $update = $then; }
7007: my $refresh=$env{'user.refresh.time'};
7008: if (!$refresh) { $refresh = $update; }
7009: my $now = time;
7010: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7011: $now,'ca','constructaccess');
7012: $ownerhome = &homeserver($ownername,$ownerdomain);
7013: return($ownername,$ownerdomain,$ownerhome);
7014: }
7015: # No business here
7016: return '';
7017: }
7018:
7019: sub get_comm_blocks {
7020: my ($cdom,$cnum) = @_;
7021: if ($cdom eq '' || $cnum eq '') {
7022: return unless ($env{'request.course.id'});
7023: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7024: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7025: }
7026: my %commblocks;
7027: my $hashid=$cdom.'_'.$cnum;
7028: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7029: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7030: %commblocks = %{$blocksref};
7031: } else {
7032: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7033: my $cachetime = 600;
7034: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7035: }
7036: return %commblocks;
7037: }
7038:
7039: sub has_comm_blocking {
7040: my ($priv,$symb,$uri,$blocks) = @_;
7041: return unless ($env{'request.course.id'});
7042: return unless ($priv eq 'bre');
7043: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7044: my %commblocks;
7045: if (ref($blocks) eq 'HASH') {
7046: %commblocks = %{$blocks};
7047: } else {
7048: %commblocks = &get_comm_blocks();
7049: }
7050: return unless (keys(%commblocks) > 0);
7051: if (!$symb) { $symb=&symbread($uri,1); }
7052: my ($map,$resid,undef)=&decode_symb($symb);
7053: my %tocheck = (
7054: maps => $map,
7055: resources => $symb,
7056: );
7057: my @blockers;
7058: my $now = time;
7059: my $navmap = Apache::lonnavmaps::navmap->new();
7060: foreach my $block (keys(%commblocks)) {
7061: if ($block =~ /^(\d+)____(\d+)$/) {
7062: my ($start,$end) = ($1,$2);
7063: if ($start <= $now && $end >= $now) {
7064: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7065: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7066: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7067: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
7068: unless (grep(/^\Q$block\E$/,@blockers)) {
7069: push(@blockers,$block);
7070: }
7071: }
7072: }
7073: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7074: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
7075: unless (grep(/^\Q$block\E$/,@blockers)) {
7076: push(@blockers,$block);
7077: }
7078: }
7079: }
7080: }
7081: }
7082: }
7083: } elsif ($block =~ /^firstaccess____(.+)$/) {
7084: my $item = $1;
7085: my @to_test;
7086: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7087: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7088: my $check_interval;
7089: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
7090: my @interval;
7091: my $type = 'map';
7092: if ($item eq 'course') {
7093: $type = 'course';
7094: @interval=&EXT("resource.0.interval");
7095: } else {
7096: if ($item =~ /___\d+___/) {
7097: $type = 'resource';
7098: @interval=&EXT("resource.0.interval",$item);
7099: if (ref($navmap)) {
7100: my $res = $navmap->getBySymb($item);
7101: push(@to_test,$res);
7102: }
7103: } else {
7104: my $mapsymb = &symbread($item,1);
7105: if ($mapsymb) {
7106: if (ref($navmap)) {
7107: my $mapres = $navmap->getBySymb($mapsymb);
7108: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
7109: foreach my $res (@to_test) {
7110: my $symb = $res->symb();
7111: next if ($symb eq $mapsymb);
7112: if ($symb ne '') {
7113: @interval=&EXT("resource.0.interval",$symb);
7114: last;
7115: }
7116: }
7117: }
7118: }
7119: }
7120: }
7121: if ($interval[0] =~ /\d+/) {
7122: my $first_access;
7123: if ($type eq 'resource') {
7124: $first_access=&get_first_access($interval[1],$item);
7125: } elsif ($type eq 'map') {
7126: $first_access=&get_first_access($interval[1],undef,$item);
7127: } else {
7128: $first_access=&get_first_access($interval[1]);
7129: }
7130: if ($first_access) {
7131: my $timesup = $first_access+$interval[0];
7132: if ($timesup > $now) {
7133: foreach my $res (@to_test) {
7134: if ($res->is_problem()) {
7135: if ($res->completable()) {
7136: unless (grep(/^\Q$block\E$/,@blockers)) {
7137: push(@blockers,$block);
7138: }
7139: last;
7140: }
7141: }
7142: }
7143: }
7144: }
7145: }
7146: }
7147: }
7148: }
7149: }
7150: }
7151: return @blockers;
7152: }
7153:
7154: sub check_docs_block {
7155: my ($docsblock,$tocheck) =@_;
7156: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7157: return;
7158: }
7159: if (ref($docsblock->{'maps'}) eq 'HASH') {
7160: if ($tocheck->{'maps'}) {
7161: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7162: return 1;
7163: }
7164: }
7165: }
7166: if (ref($docsblock->{'resources'}) eq 'HASH') {
7167: if ($tocheck->{'resources'}) {
7168: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7169: return 1;
7170: }
7171: }
7172: }
7173: return;
7174: }
7175:
7176: #
7177: # Removes the versino from a URI and
7178: # splits it in to its filename and path to the filename.
7179: # Seems like File::Basename could have done this more clearly.
7180: # Parameters:
7181: # $uri - input URI
7182: # Returns:
7183: # Two element list consisting of
7184: # $pathname - the URI up to and excluding the trailing /
7185: # $filename - The part of the URI following the last /
7186: # NOTE:
7187: # Another realization of this is simply:
7188: # use File::Basename;
7189: # ...
7190: # $uri = shift;
7191: # $filename = basename($uri);
7192: # $path = dirname($uri);
7193: # return ($filename, $path);
7194: #
7195: # The implementation below is probably faster however.
7196: #
7197: sub split_uri_for_cond {
7198: my $uri=&deversion(&declutter(shift));
7199: my @uriparts=split(/\//,$uri);
7200: my $filename=pop(@uriparts);
7201: my $pathname=join('/',@uriparts);
7202: return ($pathname,$filename);
7203: }
7204: # --------------------------------------------------- Is a resource on the map?
7205:
7206: sub is_on_map {
7207: my ($pathname,$filename) = &split_uri_for_cond(shift);
7208: #Trying to find the conditional for the file
7209: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7210: /\&\Q$filename\E\:([\d\|]+)\&/);
7211: if ($match) {
7212: return (1,$1);
7213: } else {
7214: return (0,0);
7215: }
7216: }
7217:
7218: # --------------------------------------------------------- Get symb from alias
7219:
7220: sub get_symb_from_alias {
7221: my $symb=shift;
7222: my ($map,$resid,$url)=&decode_symb($symb);
7223: # Already is a symb
7224: if ($url) { return $symb; }
7225: # Must be an alias
7226: my $aliassymb='';
7227: my %bighash;
7228: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7229: &GDBM_READER(),0640)) {
7230: my $rid=$bighash{'mapalias_'.$symb};
7231: if ($rid) {
7232: my ($mapid,$resid)=split(/\./,$rid);
7233: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7234: $resid,$bighash{'src_'.$rid});
7235: }
7236: untie %bighash;
7237: }
7238: return $aliassymb;
7239: }
7240:
7241: # ----------------------------------------------------------------- Define Role
7242:
7243: sub definerole {
7244: if (allowed('mcr','/')) {
7245: my ($rolename,$sysrole,$domrole,$courole)=@_;
7246: foreach my $role (split(':',$sysrole)) {
7247: my ($crole,$cqual)=split(/\&/,$role);
7248: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7249: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7250: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7251: return "refused:s:$crole&$cqual";
7252: }
7253: }
7254: }
7255: foreach my $role (split(':',$domrole)) {
7256: my ($crole,$cqual)=split(/\&/,$role);
7257: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7258: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7259: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7260: return "refused:d:$crole&$cqual";
7261: }
7262: }
7263: }
7264: foreach my $role (split(':',$courole)) {
7265: my ($crole,$cqual)=split(/\&/,$role);
7266: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7267: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7268: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7269: return "refused:c:$crole&$cqual";
7270: }
7271: }
7272: }
7273: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7274: "$env{'user.domain'}:$env{'user.name'}:".
7275: "rolesdef_$rolename=".
7276: escape($sysrole.'_'.$domrole.'_'.$courole);
7277: return reply($command,$env{'user.home'});
7278: } else {
7279: return 'refused';
7280: }
7281: }
7282:
7283: # ---------------- Make a metadata query against the network of library servers
7284:
7285: sub metadata_query {
7286: my ($query,$custom,$customshow,$server_array)=@_;
7287: my %rhash;
7288: my %libserv = &all_library();
7289: my @server_list = (defined($server_array) ? @$server_array
7290: : keys(%libserv) );
7291: for my $server (@server_list) {
7292: unless ($custom or $customshow) {
7293: my $reply=&reply("querysend:".&escape($query),$server);
7294: $rhash{$server}=$reply;
7295: }
7296: else {
7297: my $reply=&reply("querysend:".&escape($query).':'.
7298: &escape($custom).':'.&escape($customshow),
7299: $server);
7300: $rhash{$server}=$reply;
7301: }
7302: }
7303: return \%rhash;
7304: }
7305:
7306: # ----------------------------------------- Send log queries and wait for reply
7307:
7308: sub log_query {
7309: my ($uname,$udom,$query,%filters)=@_;
7310: my $uhome=&homeserver($uname,$udom);
7311: if ($uhome eq 'no_host') { return 'error: no_host'; }
7312: my $uhost=&hostname($uhome);
7313: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7314: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7315: $uhome);
7316: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7317: return get_query_reply($queryid);
7318: }
7319:
7320: # -------------------------- Update MySQL table for portfolio file
7321:
7322: sub update_portfolio_table {
7323: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7324: if ($group ne '') {
7325: $file_name =~s /^\Q$group\E//;
7326: }
7327: my $homeserver = &homeserver($uname,$udom);
7328: my $queryid=
7329: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7330: ':'.&escape($file_name).':'.$action,$homeserver);
7331: my $reply = &get_query_reply($queryid);
7332: return $reply;
7333: }
7334:
7335: # -------------------------- Update MySQL allusers table
7336:
7337: sub update_allusers_table {
7338: my ($uname,$udom,$names) = @_;
7339: my $homeserver = &homeserver($uname,$udom);
7340: my $queryid=
7341: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7342: 'lastname='.&escape($names->{'lastname'}).'%%'.
7343: 'firstname='.&escape($names->{'firstname'}).'%%'.
7344: 'middlename='.&escape($names->{'middlename'}).'%%'.
7345: 'generation='.&escape($names->{'generation'}).'%%'.
7346: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7347: 'id='.&escape($names->{'id'}),$homeserver);
7348: return;
7349: }
7350:
7351: # ------- Request retrieval of institutional classlists for course(s)
7352:
7353: sub fetch_enrollment_query {
7354: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7355: my $homeserver;
7356: my $maxtries = 1;
7357: if ($context eq 'automated') {
7358: $homeserver = $perlvar{'lonHostID'};
7359: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7360: } else {
7361: $homeserver = &homeserver($cnum,$dom);
7362: }
7363: my $host=&hostname($homeserver);
7364: my $cmd = '';
7365: foreach my $affiliate (keys(%{$affiliatesref})) {
7366: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7367: }
7368: $cmd =~ s/%%$//;
7369: $cmd = &escape($cmd);
7370: my $query = 'fetchenrollment';
7371: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7372: unless ($queryid=~/^\Q$host\E\_/) {
7373: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7374: return 'error: '.$queryid;
7375: }
7376: my $reply = &get_query_reply($queryid);
7377: my $tries = 1;
7378: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7379: $reply = &get_query_reply($queryid);
7380: $tries ++;
7381: }
7382: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7383: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7384: } else {
7385: my @responses = split(/:/,$reply);
7386: if ($homeserver eq $perlvar{'lonHostID'}) {
7387: foreach my $line (@responses) {
7388: my ($key,$value) = split(/=/,$line,2);
7389: $$replyref{$key} = $value;
7390: }
7391: } else {
7392: my $pathname = LONCAPA::tempdir();
7393: foreach my $line (@responses) {
7394: my ($key,$value) = split(/=/,$line);
7395: $$replyref{$key} = $value;
7396: if ($value > 0) {
7397: foreach my $item (@{$$affiliatesref{$key}}) {
7398: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7399: my $destname = $pathname.'/'.$filename;
7400: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7401: if ($xml_classlist =~ /^error/) {
7402: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7403: } else {
7404: if ( open(FILE,">$destname") ) {
7405: print FILE &unescape($xml_classlist);
7406: close(FILE);
7407: } else {
7408: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7409: }
7410: }
7411: }
7412: }
7413: }
7414: }
7415: return 'ok';
7416: }
7417: return 'error';
7418: }
7419:
7420: sub get_query_reply {
7421: my $queryid=shift;
7422: my $replyfile=LONCAPA::tempdir().$queryid;
7423: my $reply='';
7424: for (1..100) {
7425: sleep 2;
7426: if (-e $replyfile.'.end') {
7427: if (open(my $fh,$replyfile)) {
7428: $reply = join('',<$fh>);
7429: close($fh);
7430: } else { return 'error: reply_file_error'; }
7431: return &unescape($reply);
7432: }
7433: }
7434: return 'timeout:'.$queryid;
7435: }
7436:
7437: sub courselog_query {
7438: #
7439: # possible filters:
7440: # url: url or symb
7441: # username
7442: # domain
7443: # action: view, submit, grade
7444: # start: timestamp
7445: # end: timestamp
7446: #
7447: my (%filters)=@_;
7448: unless ($env{'request.course.id'}) { return 'no_course'; }
7449: if ($filters{'url'}) {
7450: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7451: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7452: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7453: }
7454: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7455: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7456: return &log_query($cname,$cdom,'courselog',%filters);
7457: }
7458:
7459: sub userlog_query {
7460: #
7461: # possible filters:
7462: # action: log check role
7463: # start: timestamp
7464: # end: timestamp
7465: #
7466: my ($uname,$udom,%filters)=@_;
7467: return &log_query($uname,$udom,'userlog',%filters);
7468: }
7469:
7470: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7471:
7472: sub auto_run {
7473: my ($cnum,$cdom) = @_;
7474: my $response = 0;
7475: my $settings;
7476: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7477: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7478: $settings = $domconfig{'autoenroll'};
7479: if ($settings->{'run'} eq '1') {
7480: $response = 1;
7481: }
7482: } else {
7483: my $homeserver;
7484: if (&is_course($cdom,$cnum)) {
7485: $homeserver = &homeserver($cnum,$cdom);
7486: } else {
7487: $homeserver = &domain($cdom,'primary');
7488: }
7489: if ($homeserver ne 'no_host') {
7490: $response = &reply('autorun:'.$cdom,$homeserver);
7491: }
7492: }
7493: return $response;
7494: }
7495:
7496: sub auto_get_sections {
7497: my ($cnum,$cdom,$inst_coursecode) = @_;
7498: my $homeserver;
7499: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7500: $homeserver = &homeserver($cnum,$cdom);
7501: }
7502: if (!defined($homeserver)) {
7503: if ($cdom =~ /^$match_domain$/) {
7504: $homeserver = &domain($cdom,'primary');
7505: }
7506: }
7507: my @secs;
7508: if (defined($homeserver)) {
7509: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7510: unless ($response eq 'refused') {
7511: @secs = split(/:/,$response);
7512: }
7513: }
7514: return @secs;
7515: }
7516:
7517: sub auto_new_course {
7518: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7519: my $homeserver = &homeserver($cnum,$cdom);
7520: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7521: return $response;
7522: }
7523:
7524: sub auto_validate_courseID {
7525: my ($cnum,$cdom,$inst_course_id) = @_;
7526: my $homeserver = &homeserver($cnum,$cdom);
7527: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7528: return $response;
7529: }
7530:
7531: sub auto_validate_instcode {
7532: my ($cnum,$cdom,$instcode,$owner) = @_;
7533: my ($homeserver,$response);
7534: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7535: $homeserver = &homeserver($cnum,$cdom);
7536: }
7537: if (!defined($homeserver)) {
7538: if ($cdom =~ /^$match_domain$/) {
7539: $homeserver = &domain($cdom,'primary');
7540: }
7541: }
7542: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7543: &escape($instcode).':'.&escape($owner),$homeserver));
7544: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7545: return ($outcome,$description,$defaultcredits);
7546: }
7547:
7548: sub auto_create_password {
7549: my ($cnum,$cdom,$authparam,$udom) = @_;
7550: my ($homeserver,$response);
7551: my $create_passwd = 0;
7552: my $authchk = '';
7553: if ($udom =~ /^$match_domain$/) {
7554: $homeserver = &domain($udom,'primary');
7555: }
7556: if ($homeserver eq '') {
7557: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7558: $homeserver = &homeserver($cnum,$cdom);
7559: }
7560: }
7561: if ($homeserver eq '') {
7562: $authchk = 'nodomain';
7563: } else {
7564: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7565: if ($response eq 'refused') {
7566: $authchk = 'refused';
7567: } else {
7568: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7569: }
7570: }
7571: return ($authparam,$create_passwd,$authchk);
7572: }
7573:
7574: sub auto_photo_permission {
7575: my ($cnum,$cdom,$students) = @_;
7576: my $homeserver = &homeserver($cnum,$cdom);
7577: my ($outcome,$perm_reqd,$conditions) =
7578: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7579: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7580: return (undef,undef);
7581: }
7582: return ($outcome,$perm_reqd,$conditions);
7583: }
7584:
7585: sub auto_checkphotos {
7586: my ($uname,$udom,$pid) = @_;
7587: my $homeserver = &homeserver($uname,$udom);
7588: my ($result,$resulttype);
7589: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7590: &escape($uname).':'.&escape($pid),
7591: $homeserver));
7592: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7593: return (undef,undef);
7594: }
7595: if ($outcome) {
7596: ($result,$resulttype) = split(/:/,$outcome);
7597: }
7598: return ($result,$resulttype);
7599: }
7600:
7601: sub auto_photochoice {
7602: my ($cnum,$cdom) = @_;
7603: my $homeserver = &homeserver($cnum,$cdom);
7604: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7605: &escape($cdom),
7606: $homeserver)));
7607: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7608: return (undef,undef);
7609: }
7610: return ($update,$comment);
7611: }
7612:
7613: sub auto_photoupdate {
7614: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7615: my $homeserver = &homeserver($cnum,$dom);
7616: my $host=&hostname($homeserver);
7617: my $cmd = '';
7618: my $maxtries = 1;
7619: foreach my $affiliate (keys(%{$affiliatesref})) {
7620: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7621: }
7622: $cmd =~ s/%%$//;
7623: $cmd = &escape($cmd);
7624: my $query = 'institutionalphotos';
7625: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7626: unless ($queryid=~/^\Q$host\E\_/) {
7627: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7628: return 'error: '.$queryid;
7629: }
7630: my $reply = &get_query_reply($queryid);
7631: my $tries = 1;
7632: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7633: $reply = &get_query_reply($queryid);
7634: $tries ++;
7635: }
7636: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7637: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7638: } else {
7639: my @responses = split(/:/,$reply);
7640: my $outcome = shift(@responses);
7641: foreach my $item (@responses) {
7642: my ($key,$value) = split(/=/,$item);
7643: $$photo{$key} = $value;
7644: }
7645: return $outcome;
7646: }
7647: return 'error';
7648: }
7649:
7650: sub auto_instcode_format {
7651: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7652: $cat_order) = @_;
7653: my $courses = '';
7654: my @homeservers;
7655: if ($caller eq 'global') {
7656: my %servers = &get_servers($codedom,'library');
7657: foreach my $tryserver (keys(%servers)) {
7658: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7659: push(@homeservers,$tryserver);
7660: }
7661: }
7662: } elsif ($caller eq 'requests') {
7663: if ($codedom =~ /^$match_domain$/) {
7664: my $chome = &domain($codedom,'primary');
7665: unless ($chome eq 'no_host') {
7666: push(@homeservers,$chome);
7667: }
7668: }
7669: } else {
7670: push(@homeservers,&homeserver($caller,$codedom));
7671: }
7672: foreach my $code (keys(%{$instcodes})) {
7673: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7674: }
7675: chop($courses);
7676: my $ok_response = 0;
7677: my $response;
7678: while (@homeservers > 0 && $ok_response == 0) {
7679: my $server = shift(@homeservers);
7680: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7681: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7682: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7683: split(/:/,$response);
7684: %{$codes} = (%{$codes},&str2hash($codes_str));
7685: push(@{$codetitles},&str2array($codetitles_str));
7686: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7687: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7688: $ok_response = 1;
7689: }
7690: }
7691: if ($ok_response) {
7692: return 'ok';
7693: } else {
7694: return $response;
7695: }
7696: }
7697:
7698: sub auto_instcode_defaults {
7699: my ($domain,$returnhash,$code_order) = @_;
7700: my @homeservers;
7701:
7702: my %servers = &get_servers($domain,'library');
7703: foreach my $tryserver (keys(%servers)) {
7704: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7705: push(@homeservers,$tryserver);
7706: }
7707: }
7708:
7709: my $response;
7710: foreach my $server (@homeservers) {
7711: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7712: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7713:
7714: foreach my $pair (split(/\&/,$response)) {
7715: my ($name,$value)=split(/\=/,$pair);
7716: if ($name eq 'code_order') {
7717: @{$code_order} = split(/\&/,&unescape($value));
7718: } else {
7719: $returnhash->{&unescape($name)}=&unescape($value);
7720: }
7721: }
7722: return 'ok';
7723: }
7724:
7725: return $response;
7726: }
7727:
7728: sub auto_possible_instcodes {
7729: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7730: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7731: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7732: return;
7733: }
7734: my (@homeservers,$uhome);
7735: if (defined(&domain($domain,'primary'))) {
7736: $uhome=&domain($domain,'primary');
7737: push(@homeservers,&domain($domain,'primary'));
7738: } else {
7739: my %servers = &get_servers($domain,'library');
7740: foreach my $tryserver (keys(%servers)) {
7741: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7742: push(@homeservers,$tryserver);
7743: }
7744: }
7745: }
7746: my $response;
7747: foreach my $server (@homeservers) {
7748: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7749: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7750: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7751: split(':',$response);
7752: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7753: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7754: foreach my $item (split('&',$cat_title)) {
7755: my ($name,$value)=split('=',$item);
7756: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7757: }
7758: foreach my $item (split('&',$cat_order)) {
7759: my ($name,$value)=split('=',$item);
7760: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7761: }
7762: return 'ok';
7763: }
7764: return $response;
7765: }
7766:
7767: sub auto_courserequest_checks {
7768: my ($dom) = @_;
7769: my ($homeserver,%validations);
7770: if ($dom =~ /^$match_domain$/) {
7771: $homeserver = &domain($dom,'primary');
7772: }
7773: unless ($homeserver eq 'no_host') {
7774: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7775: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7776: my @items = split(/&/,$response);
7777: foreach my $item (@items) {
7778: my ($key,$value) = split('=',$item);
7779: $validations{&unescape($key)} = &thaw_unescape($value);
7780: }
7781: }
7782: }
7783: return %validations;
7784: }
7785:
7786: sub auto_courserequest_validation {
7787: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7788: my ($homeserver,$response);
7789: if ($dom =~ /^$match_domain$/) {
7790: $homeserver = &domain($dom,'primary');
7791: }
7792: unless ($homeserver eq 'no_host') {
7793:
7794: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7795: ':'.&escape($crstype).':'.&escape($inststatuslist).
7796: ':'.&escape($instcode).':'.&escape($instseclist),
7797: $homeserver));
7798: }
7799: return $response;
7800: }
7801:
7802: sub auto_validate_class_sec {
7803: my ($cdom,$cnum,$owners,$inst_class) = @_;
7804: my $homeserver = &homeserver($cnum,$cdom);
7805: my $ownerlist;
7806: if (ref($owners) eq 'ARRAY') {
7807: $ownerlist = join(',',@{$owners});
7808: } else {
7809: $ownerlist = $owners;
7810: }
7811: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7812: &escape($ownerlist).':'.$cdom,$homeserver);
7813: return $response;
7814: }
7815:
7816: # ------------------------------------------------------- Course Group routines
7817:
7818: sub get_coursegroups {
7819: my ($cdom,$cnum,$group,$namespace) = @_;
7820: return(&dump($namespace,$cdom,$cnum,$group));
7821: }
7822:
7823: sub modify_coursegroup {
7824: my ($cdom,$cnum,$groupsettings) = @_;
7825: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7826: }
7827:
7828: sub toggle_coursegroup_status {
7829: my ($cdom,$cnum,$group,$action) = @_;
7830: my ($from_namespace,$to_namespace);
7831: if ($action eq 'delete') {
7832: $from_namespace = 'coursegroups';
7833: $to_namespace = 'deleted_groups';
7834: } else {
7835: $from_namespace = 'deleted_groups';
7836: $to_namespace = 'coursegroups';
7837: }
7838: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7839: if (my $tmp = &error(%curr_group)) {
7840: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7841: return ('read error',$tmp);
7842: } else {
7843: my %savedsettings = %curr_group;
7844: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7845: my $deloutcome;
7846: if ($result eq 'ok') {
7847: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7848: } else {
7849: return ('write error',$result);
7850: }
7851: if ($deloutcome eq 'ok') {
7852: return 'ok';
7853: } else {
7854: return ('delete error',$deloutcome);
7855: }
7856: }
7857: }
7858:
7859: sub modify_group_roles {
7860: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7861: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7862: my $role = 'gr/'.&escape($userprivs);
7863: my ($uname,$udom) = split(/:/,$user);
7864: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7865: if ($result eq 'ok') {
7866: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7867: }
7868: return $result;
7869: }
7870:
7871: sub modify_coursegroup_membership {
7872: my ($cdom,$cnum,$membership) = @_;
7873: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7874: return $result;
7875: }
7876:
7877: sub get_active_groups {
7878: my ($udom,$uname,$cdom,$cnum) = @_;
7879: my $now = time;
7880: my %groups = ();
7881: foreach my $key (keys(%env)) {
7882: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7883: my ($start,$end) = split(/\./,$env{$key});
7884: if (($end!=0) && ($end<$now)) { next; }
7885: if (($start!=0) && ($start>$now)) { next; }
7886: if ($1 eq $cdom && $2 eq $cnum) {
7887: $groups{$3} = $env{$key} ;
7888: }
7889: }
7890: }
7891: return %groups;
7892: }
7893:
7894: sub get_group_membership {
7895: my ($cdom,$cnum,$group) = @_;
7896: return(&dump('groupmembership',$cdom,$cnum,$group));
7897: }
7898:
7899: sub get_users_groups {
7900: my ($udom,$uname,$courseid) = @_;
7901: my @usersgroups;
7902: my $cachetime=1800;
7903:
7904: my $hashid="$udom:$uname:$courseid";
7905: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7906: if (defined($cached)) {
7907: @usersgroups = split(/:/,$grouplist);
7908: } else {
7909: $grouplist = '';
7910: my $courseurl = &courseid_to_courseurl($courseid);
7911: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7912: my $access_end = $env{'course.'.$courseid.
7913: '.default_enrollment_end_date'};
7914: my $now = time;
7915: foreach my $key (keys(%roleshash)) {
7916: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7917: my $group = $1;
7918: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7919: my $start = $2;
7920: my $end = $1;
7921: if ($start == -1) { next; } # deleted from group
7922: if (($start!=0) && ($start>$now)) { next; }
7923: if (($end!=0) && ($end<$now)) {
7924: if ($access_end && $access_end < $now) {
7925: if ($access_end - $end < 86400) {
7926: push(@usersgroups,$group);
7927: }
7928: }
7929: next;
7930: }
7931: push(@usersgroups,$group);
7932: }
7933: }
7934: }
7935: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7936: $grouplist = join(':',@usersgroups);
7937: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7938: }
7939: return @usersgroups;
7940: }
7941:
7942: sub devalidate_getgroups_cache {
7943: my ($udom,$uname,$cdom,$cnum)=@_;
7944: my $courseid = $cdom.'_'.$cnum;
7945:
7946: my $hashid="$udom:$uname:$courseid";
7947: &devalidate_cache_new('getgroups',$hashid);
7948: }
7949:
7950: # ------------------------------------------------------------------ Plain Text
7951:
7952: sub plaintext {
7953: my ($short,$type,$cid,$forcedefault) = @_;
7954: if ($short =~ m{^cr/}) {
7955: return (split('/',$short))[-1];
7956: }
7957: if (!defined($cid)) {
7958: $cid = $env{'request.course.id'};
7959: }
7960: my %rolenames = (
7961: Course => 'std',
7962: Community => 'alt1',
7963: );
7964: if ($cid ne '') {
7965: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7966: unless ($forcedefault) {
7967: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7968: &Apache::lonlocal::mt_escape(\$roletext);
7969: return &Apache::lonlocal::mt($roletext);
7970: }
7971: }
7972: }
7973: if ((defined($type)) && (defined($rolenames{$type})) &&
7974: (defined($rolenames{$type})) &&
7975: (defined($prp{$short}{$rolenames{$type}}))) {
7976: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7977: } elsif ($cid ne '') {
7978: my $crstype = $env{'course.'.$cid.'.type'};
7979: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7980: (defined($prp{$short}{$rolenames{$crstype}}))) {
7981: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7982: }
7983: }
7984: return &Apache::lonlocal::mt($prp{$short}{'std'});
7985: }
7986:
7987: # ----------------------------------------------------------------- Assign Role
7988:
7989: sub assignrole {
7990: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7991: $context)=@_;
7992: my $mrole;
7993: if ($role =~ /^cr\//) {
7994: my $cwosec=$url;
7995: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7996: unless (&allowed('ccr',$cwosec)) {
7997: my $refused = 1;
7998: if ($context eq 'requestcourses') {
7999: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8000: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8001: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8002: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8003: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8004: if ($crsenv{'internal.courseowner'} eq
8005: $env{'user.name'}.':'.$env{'user.domain'}) {
8006: $refused = '';
8007: }
8008: }
8009: }
8010: }
8011: }
8012: if ($refused) {
8013: &logthis('Refused custom assignrole: '.
8014: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8015: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8016: return 'refused';
8017: }
8018: }
8019: $mrole='cr';
8020: } elsif ($role =~ /^gr\//) {
8021: my $cwogrp=$url;
8022: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8023: unless (&allowed('mdg',$cwogrp)) {
8024: &logthis('Refused group assignrole: '.
8025: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8026: $env{'user.name'}.' at '.$env{'user.domain'});
8027: return 'refused';
8028: }
8029: $mrole='gr';
8030: } else {
8031: my $cwosec=$url;
8032: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8033: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8034: my $refused;
8035: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8036: if (!(&allowed('c'.$role,$url))) {
8037: $refused = 1;
8038: }
8039: } else {
8040: $refused = 1;
8041: }
8042: if ($refused) {
8043: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8044: if (!$selfenroll && $context eq 'course') {
8045: my %crsenv;
8046: if ($role eq 'cc' || $role eq 'co') {
8047: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8048: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8049: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8050: if ($crsenv{'internal.courseowner'} eq
8051: $env{'user.name'}.':'.$env{'user.domain'}) {
8052: $refused = '';
8053: }
8054: }
8055: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8056: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8057: if ($crsenv{'internal.courseowner'} eq
8058: $env{'user.name'}.':'.$env{'user.domain'}) {
8059: $refused = '';
8060: }
8061: }
8062: }
8063: }
8064: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8065: $refused = '';
8066: } elsif ($context eq 'requestcourses') {
8067: my @possroles = ('st','ta','ep','in','cc','co');
8068: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8069: my $wrongcc;
8070: if ($cnum =~ /^$match_community$/) {
8071: $wrongcc = 1 if ($role eq 'cc');
8072: } else {
8073: $wrongcc = 1 if ($role eq 'co');
8074: }
8075: unless ($wrongcc) {
8076: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8077: if ($crsenv{'internal.courseowner'} eq
8078: $env{'user.name'}.':'.$env{'user.domain'}) {
8079: $refused = '';
8080: }
8081: }
8082: }
8083: } elsif ($context eq 'requestauthor') {
8084: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8085: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8086: if ($env{'environment.requestauthor'} eq 'automatic') {
8087: $refused = '';
8088: } else {
8089: my %domdefaults = &get_domain_defaults($udom);
8090: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8091: my $checkbystatus;
8092: if ($env{'user.adv'}) {
8093: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8094: if ($disposition eq 'automatic') {
8095: $refused = '';
8096: } elsif ($disposition eq '') {
8097: $checkbystatus = 1;
8098: }
8099: } else {
8100: $checkbystatus = 1;
8101: }
8102: if ($checkbystatus) {
8103: if ($env{'environment.inststatus'}) {
8104: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8105: foreach my $type (@inststatuses) {
8106: if (($type ne '') &&
8107: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8108: $refused = '';
8109: }
8110: }
8111: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8112: $refused = '';
8113: }
8114: }
8115: }
8116: }
8117: }
8118: }
8119: if ($refused) {
8120: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8121: ' '.$role.' '.$end.' '.$start.' by '.
8122: $env{'user.name'}.' at '.$env{'user.domain'});
8123: return 'refused';
8124: }
8125: }
8126: } elsif ($role eq 'au') {
8127: if ($url ne '/'.$udom.'/') {
8128: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8129: ' to assign author role for '.$uname.':'.$udom.
8130: ' in domain: '.$url.' refused (wrong domain).');
8131: return 'refused';
8132: }
8133: }
8134: $mrole=$role;
8135: }
8136: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8137: "$udom:$uname:$url".'_'."$mrole=$role";
8138: if ($end) { $command.='_'.$end; }
8139: if ($start) {
8140: if ($end) {
8141: $command.='_'.$start;
8142: } else {
8143: $command.='_0_'.$start;
8144: }
8145: }
8146: my $origstart = $start;
8147: my $origend = $end;
8148: my $delflag;
8149: # actually delete
8150: if ($deleteflag) {
8151: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8152: # modify command to delete the role
8153: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8154: "$udom:$uname:$url".'_'."$mrole";
8155: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8156: # set start and finish to negative values for userrolelog
8157: $start=-1;
8158: $end=-1;
8159: $delflag = 1;
8160: }
8161: }
8162: # send command
8163: my $answer=&reply($command,&homeserver($uname,$udom));
8164: # log new user role if status is ok
8165: if ($answer eq 'ok') {
8166: &userrolelog($role,$uname,$udom,$url,$start,$end);
8167: if (($role eq 'cc') || ($role eq 'in') ||
8168: ($role eq 'ep') || ($role eq 'ad') ||
8169: ($role eq 'ta') || ($role eq 'st') ||
8170: ($role=~/^cr/) || ($role eq 'gr') ||
8171: ($role eq 'co')) {
8172: # for course roles, perform group memberships changes triggered by role change.
8173: unless ($role =~ /^gr/) {
8174: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8175: $origstart,$selfenroll,$context);
8176: }
8177: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8178: $selfenroll,$context);
8179: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8180: ($role eq 'au') || ($role eq 'dc')) {
8181: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8182: $context);
8183: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8184: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8185: $context);
8186: }
8187: if ($role eq 'cc') {
8188: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8189: }
8190: }
8191: return $answer;
8192: }
8193:
8194: sub autoupdate_coowners {
8195: my ($url,$end,$start,$uname,$udom) = @_;
8196: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8197: if (($cdom ne '') && ($cnum ne '')) {
8198: my $now = time;
8199: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8200: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8201: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8202: my $instcode = $coursehash{'internal.coursecode'};
8203: if ($instcode ne '') {
8204: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8205: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8206: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8207: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8208: if ($result eq 'valid') {
8209: if ($coursehash{'internal.co-owners'}) {
8210: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8211: push(@newcoowners,$coowner);
8212: }
8213: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8214: push(@newcoowners,$uname.':'.$udom);
8215: }
8216: @newcoowners = sort(@newcoowners);
8217: } else {
8218: push(@newcoowners,$uname.':'.$udom);
8219: }
8220: } else {
8221: if ($coursehash{'internal.co-owners'}) {
8222: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8223: unless ($coowner eq $uname.':'.$udom) {
8224: push(@newcoowners,$coowner);
8225: }
8226: }
8227: unless (@newcoowners > 0) {
8228: $delcoowners = 1;
8229: $coowners = '';
8230: }
8231: }
8232: }
8233: if (@newcoowners || $delcoowners) {
8234: &store_coowners($cdom,$cnum,$coursehash{'home'},
8235: $delcoowners,@newcoowners);
8236: }
8237: }
8238: }
8239: }
8240: }
8241: }
8242: }
8243:
8244: sub store_coowners {
8245: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8246: my $cid = $cdom.'_'.$cnum;
8247: my ($coowners,$delresult,$putresult);
8248: if (@newcoowners) {
8249: $coowners = join(',',@newcoowners);
8250: my %coownershash = (
8251: 'internal.co-owners' => $coowners,
8252: );
8253: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8254: if ($putresult eq 'ok') {
8255: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8256: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8257: }
8258: }
8259: }
8260: if ($delcoowners) {
8261: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8262: if ($delresult eq 'ok') {
8263: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8264: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8265: }
8266: }
8267: }
8268: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8269: my %crsinfo =
8270: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8271: if (ref($crsinfo{$cid}) eq 'HASH') {
8272: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8273: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8274: }
8275: }
8276: }
8277:
8278: # -------------------------------------------------- Modify user authentication
8279: # Overrides without validation
8280:
8281: sub modifyuserauth {
8282: my ($udom,$uname,$umode,$upass)=@_;
8283: my $uhome=&homeserver($uname,$udom);
8284: unless (&allowed('mau',$udom)) { return 'refused'; }
8285: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8286: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8287: ' in domain '.$env{'request.role.domain'});
8288: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8289: &escape($upass),$uhome);
8290: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8291: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8292: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8293: &log($udom,,$uname,$uhome,
8294: 'Authentication changed by '.$env{'user.domain'}.', '.
8295: $env{'user.name'}.', '.$umode.
8296: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8297: unless ($reply eq 'ok') {
8298: &logthis('Authentication mode error: '.$reply);
8299: return 'error: '.$reply;
8300: }
8301: return 'ok';
8302: }
8303:
8304: # --------------------------------------------------------------- Modify a user
8305:
8306: sub modifyuser {
8307: my ($udom, $uname, $uid,
8308: $umode, $upass, $first,
8309: $middle, $last, $gene,
8310: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8311: $udom= &LONCAPA::clean_domain($udom);
8312: $uname=&LONCAPA::clean_username($uname);
8313: my $showcandelete = 'none';
8314: if (ref($candelete) eq 'ARRAY') {
8315: if (@{$candelete} > 0) {
8316: $showcandelete = join(', ',@{$candelete});
8317: }
8318: }
8319: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8320: $umode.', '.$first.', '.$middle.', '.
8321: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8322: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8323: ' desiredhome not specified').
8324: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8325: ' in domain '.$env{'request.role.domain'});
8326: my $uhome=&homeserver($uname,$udom,'true');
8327: my $newuser;
8328: if ($uhome eq 'no_host') {
8329: $newuser = 1;
8330: }
8331: # ----------------------------------------------------------------- Create User
8332: if (($uhome eq 'no_host') &&
8333: (($umode && $upass) || ($umode eq 'localauth'))) {
8334: my $unhome='';
8335: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8336: $unhome = $desiredhome;
8337: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8338: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8339: } else { # load balancing routine for determining $unhome
8340: my $loadm=10000000;
8341: my %servers = &get_servers($udom,'library');
8342: foreach my $tryserver (keys(%servers)) {
8343: my $answer=reply('load',$tryserver);
8344: if (($answer=~/\d+/) && ($answer<$loadm)) {
8345: $loadm=$answer;
8346: $unhome=$tryserver;
8347: }
8348: }
8349: }
8350: if (($unhome eq '') || ($unhome eq 'no_host')) {
8351: return 'error: unable to find a home server for '.$uname.
8352: ' in domain '.$udom;
8353: }
8354: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8355: &escape($upass),$unhome);
8356: unless ($reply eq 'ok') {
8357: return 'error: '.$reply;
8358: }
8359: $uhome=&homeserver($uname,$udom,'true');
8360: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8361: return 'error: unable verify users home machine.';
8362: }
8363: } # End of creation of new user
8364: # ---------------------------------------------------------------------- Add ID
8365: if ($uid) {
8366: $uid=~tr/A-Z/a-z/;
8367: my %uidhash=&idrget($udom,$uname);
8368: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8369: && (!$forceid)) {
8370: unless ($uid eq $uidhash{$uname}) {
8371: return 'error: user id "'.$uid.'" does not match '.
8372: 'current user id "'.$uidhash{$uname}.'".';
8373: }
8374: } else {
8375: &idput($udom,($uname => $uid));
8376: }
8377: }
8378: # -------------------------------------------------------------- Add names, etc
8379: my @tmp=&get('environment',
8380: ['firstname','middlename','lastname','generation','id',
8381: 'permanentemail','inststatus'],
8382: $udom,$uname);
8383: my (%names,%oldnames);
8384: if ($tmp[0] =~ m/^error:.*/) {
8385: %names=();
8386: } else {
8387: %names = @tmp;
8388: %oldnames = %names;
8389: }
8390: #
8391: # If name, email and/or uid are blank (e.g., because an uploaded file
8392: # of users did not contain them), do not overwrite existing values
8393: # unless field is in $candelete array ref.
8394: #
8395:
8396: my @fields = ('firstname','middlename','lastname','generation',
8397: 'permanentemail','id');
8398: my %newvalues;
8399: if (ref($candelete) eq 'ARRAY') {
8400: foreach my $field (@fields) {
8401: if (grep(/^\Q$field\E$/,@{$candelete})) {
8402: if ($field eq 'firstname') {
8403: $names{$field} = $first;
8404: } elsif ($field eq 'middlename') {
8405: $names{$field} = $middle;
8406: } elsif ($field eq 'lastname') {
8407: $names{$field} = $last;
8408: } elsif ($field eq 'generation') {
8409: $names{$field} = $gene;
8410: } elsif ($field eq 'permanentemail') {
8411: $names{$field} = $email;
8412: } elsif ($field eq 'id') {
8413: $names{$field} = $uid;
8414: }
8415: }
8416: }
8417: }
8418: if ($first) { $names{'firstname'} = $first; }
8419: if (defined($middle)) { $names{'middlename'} = $middle; }
8420: if ($last) { $names{'lastname'} = $last; }
8421: if (defined($gene)) { $names{'generation'} = $gene; }
8422: if ($email) {
8423: $email=~s/[^\w\@\.\-\,]//gs;
8424: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8425: }
8426: if ($uid) { $names{'id'} = $uid; }
8427: if (defined($inststatus)) {
8428: $names{'inststatus'} = '';
8429: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8430: if (ref($usertypes) eq 'HASH') {
8431: my @okstatuses;
8432: foreach my $item (split(/:/,$inststatus)) {
8433: if (defined($usertypes->{$item})) {
8434: push(@okstatuses,$item);
8435: }
8436: }
8437: if (@okstatuses) {
8438: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8439: }
8440: }
8441: }
8442: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8443: $umode.', '.$first.', '.$middle.', '.
8444: $last.', '.$gene.', '.$email.', '.$inststatus;
8445: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8446: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8447: } else {
8448: $logmsg .= ' during self creation';
8449: }
8450: my $changed;
8451: if ($newuser) {
8452: $changed = 1;
8453: } else {
8454: foreach my $field (@fields) {
8455: if ($names{$field} ne $oldnames{$field}) {
8456: $changed = 1;
8457: last;
8458: }
8459: }
8460: }
8461: unless ($changed) {
8462: $logmsg = 'No changes in user information needed for: '.$logmsg;
8463: &logthis($logmsg);
8464: return 'ok';
8465: }
8466: my $reply = &put('environment', \%names, $udom,$uname);
8467: if ($reply ne 'ok') {
8468: return 'error: '.$reply;
8469: }
8470: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8471: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8472: }
8473: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8474: &devalidate_cache_new('namescache',$uname.':'.$udom);
8475: $logmsg = 'Success modifying user '.$logmsg;
8476: &logthis($logmsg);
8477: return 'ok';
8478: }
8479:
8480: # -------------------------------------------------------------- Modify student
8481:
8482: sub modifystudent {
8483: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8484: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8485: $selfenroll,$context,$inststatus,$credits)=@_;
8486: if (!$cid) {
8487: unless ($cid=$env{'request.course.id'}) {
8488: return 'not_in_class';
8489: }
8490: }
8491: # --------------------------------------------------------------- Make the user
8492: my $reply=&modifyuser
8493: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8494: $desiredhome,$email,$inststatus);
8495: unless ($reply eq 'ok') { return $reply; }
8496: # This will cause &modify_student_enrollment to get the uid from the
8497: # students environment
8498: $uid = undef if (!$forceid);
8499: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8500: $gene,$usec,$end,$start,$type,$locktype,
8501: $cid,$selfenroll,$context,$credits);
8502: return $reply;
8503: }
8504:
8505: sub modify_student_enrollment {
8506: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8507: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8508: my ($cdom,$cnum,$chome);
8509: if (!$cid) {
8510: unless ($cid=$env{'request.course.id'}) {
8511: return 'not_in_class';
8512: }
8513: $cdom=$env{'course.'.$cid.'.domain'};
8514: $cnum=$env{'course.'.$cid.'.num'};
8515: } else {
8516: ($cdom,$cnum)=split(/_/,$cid);
8517: }
8518: $chome=$env{'course.'.$cid.'.home'};
8519: if (!$chome) {
8520: $chome=&homeserver($cnum,$cdom);
8521: }
8522: if (!$chome) { return 'unknown_course'; }
8523: # Make sure the user exists
8524: my $uhome=&homeserver($uname,$udom);
8525: if (($uhome eq '') || ($uhome eq 'no_host')) {
8526: return 'error: no such user';
8527: }
8528: # Get student data if we were not given enough information
8529: if (!defined($first) || $first eq '' ||
8530: !defined($last) || $last eq '' ||
8531: !defined($uid) || $uid eq '' ||
8532: !defined($middle) || $middle eq '' ||
8533: !defined($gene) || $gene eq '') {
8534: # They did not supply us with enough data to enroll the student, so
8535: # we need to pick up more information.
8536: my %tmp = &get('environment',
8537: ['firstname','middlename','lastname', 'generation','id']
8538: ,$udom,$uname);
8539:
8540: #foreach my $key (keys(%tmp)) {
8541: # &logthis("key $key = ".$tmp{$key});
8542: #}
8543: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8544: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8545: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8546: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8547: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8548: }
8549: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8550: my $user = "$uname:$udom";
8551: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8552: my $reply=cput('classlist',
8553: {$user =>
8554: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8555: $cdom,$cnum);
8556: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8557: &devalidate_getsection_cache($udom,$uname,$cid);
8558: } else {
8559: return 'error: '.$reply;
8560: }
8561: # Add student role to user
8562: my $uurl='/'.$cid;
8563: $uurl=~s/\_/\//g;
8564: if ($usec) {
8565: $uurl.='/'.$usec;
8566: }
8567: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8568: $selfenroll,$context);
8569: if ($result ne 'ok') {
8570: if ($old_entry{$user} ne '') {
8571: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8572: } else {
8573: $reply = &del('classlist',[$user],$cdom,$cnum);
8574: }
8575: }
8576: return $result;
8577: }
8578:
8579: sub format_name {
8580: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8581: my $name;
8582: if ($first ne 'lastname') {
8583: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8584: } else {
8585: if ($lastname=~/\S/) {
8586: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8587: $name=~s/\s+,/,/;
8588: } else {
8589: $name.= $firstname.' '.$middlename.' '.$generation;
8590: }
8591: }
8592: $name=~s/^\s+//;
8593: $name=~s/\s+$//;
8594: $name=~s/\s+/ /g;
8595: return $name;
8596: }
8597:
8598: # ------------------------------------------------- Write to course preferences
8599:
8600: sub writecoursepref {
8601: my ($courseid,%prefs)=@_;
8602: $courseid=~s/^\///;
8603: $courseid=~s/\_/\//g;
8604: my ($cdomain,$cnum)=split(/\//,$courseid);
8605: my $chome=homeserver($cnum,$cdomain);
8606: if (($chome eq '') || ($chome eq 'no_host')) {
8607: return 'error: no such course';
8608: }
8609: my $cstring='';
8610: foreach my $pref (keys(%prefs)) {
8611: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8612: }
8613: $cstring=~s/\&$//;
8614: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8615: }
8616:
8617: # ---------------------------------------------------------- Make/modify course
8618:
8619: sub createcourse {
8620: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8621: $course_owner,$crstype,$cnum,$context,$category)=@_;
8622: $url=&declutter($url);
8623: my $cid='';
8624: if ($context eq 'requestcourses') {
8625: my $can_create = 0;
8626: my ($ownername,$ownerdom) = split(':',$course_owner);
8627: if ($udom eq $ownerdom) {
8628: if (&usertools_access($ownername,$ownerdom,$category,undef,
8629: $context)) {
8630: $can_create = 1;
8631: }
8632: } else {
8633: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8634: $category);
8635: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8636: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8637: if (@curr > 0) {
8638: my @options = qw(approval validate autolimit);
8639: my $optregex = join('|',@options);
8640: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8641: $can_create = 1;
8642: }
8643: }
8644: }
8645: }
8646: if ($can_create) {
8647: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8648: unless (&allowed('ccc',$udom)) {
8649: return 'refused';
8650: }
8651: }
8652: } else {
8653: return 'refused';
8654: }
8655: } elsif (!&allowed('ccc',$udom)) {
8656: return 'refused';
8657: }
8658: # --------------------------------------------------------------- Get Unique ID
8659: my $uname;
8660: if ($cnum =~ /^$match_courseid$/) {
8661: my $chome=&homeserver($cnum,$udom,'true');
8662: if (($chome eq '') || ($chome eq 'no_host')) {
8663: $uname = $cnum;
8664: } else {
8665: $uname = &generate_coursenum($udom,$crstype);
8666: }
8667: } else {
8668: $uname = &generate_coursenum($udom,$crstype);
8669: }
8670: return $uname if ($uname =~ /^error/);
8671: # -------------------------------------------------- Check supplied server name
8672: if (!defined($course_server)) {
8673: if (defined(&domain($udom,'primary'))) {
8674: $course_server = &domain($udom,'primary');
8675: } else {
8676: $course_server = $env{'user.home'};
8677: }
8678: }
8679: my %host_servers =
8680: &Apache::lonnet::get_servers($udom,'library');
8681: unless ($host_servers{$course_server}) {
8682: return 'error: invalid home server for course: '.$course_server;
8683: }
8684: # ------------------------------------------------------------- Make the course
8685: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8686: $course_server);
8687: unless ($reply eq 'ok') { return 'error: '.$reply; }
8688: my $uhome=&homeserver($uname,$udom,'true');
8689: if (($uhome eq '') || ($uhome eq 'no_host')) {
8690: return 'error: no such course';
8691: }
8692: # ----------------------------------------------------------------- Course made
8693: # log existence
8694: my $now = time;
8695: my $newcourse = {
8696: $udom.'_'.$uname => {
8697: description => $description,
8698: inst_code => $inst_code,
8699: owner => $course_owner,
8700: type => $crstype,
8701: creator => $env{'user.name'}.':'.
8702: $env{'user.domain'},
8703: created => $now,
8704: context => $context,
8705: },
8706: };
8707: &courseidput($udom,$newcourse,$uhome,'notime');
8708: # set toplevel url
8709: my $topurl=$url;
8710: unless ($nonstandard) {
8711: # ------------------------------------------ For standard courses, make top url
8712: my $mapurl=&clutter($url);
8713: if ($mapurl eq '/res/') { $mapurl=''; }
8714: $env{'form.initmap'}=(<<ENDINITMAP);
8715: <map>
8716: <resource id="1" type="start"></resource>
8717: <resource id="2" src="$mapurl"></resource>
8718: <resource id="3" type="finish"></resource>
8719: <link index="1" from="1" to="2"></link>
8720: <link index="2" from="2" to="3"></link>
8721: </map>
8722: ENDINITMAP
8723: $topurl=&declutter(
8724: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8725: );
8726: }
8727: # ----------------------------------------------------------- Write preferences
8728: &writecoursepref($udom.'_'.$uname,
8729: ('description' => $description,
8730: 'url' => $topurl,
8731: 'internal.creator' => $env{'user.name'}.':'.
8732: $env{'user.domain'},
8733: 'internal.created' => $now,
8734: 'internal.creationcontext' => $context)
8735: );
8736: return '/'.$udom.'/'.$uname;
8737: }
8738:
8739: # ------------------------------------------------------------------- Create ID
8740: sub generate_coursenum {
8741: my ($udom,$crstype) = @_;
8742: my $domdesc = &domain($udom);
8743: return 'error: invalid domain' if ($domdesc eq '');
8744: my $first;
8745: if ($crstype eq 'Community') {
8746: $first = '0';
8747: } else {
8748: $first = int(1+rand(9));
8749: }
8750: my $uname=$first.
8751: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8752: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8753: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8754: # ----------------------------------------------- Make sure that does not exist
8755: my $uhome=&homeserver($uname,$udom,'true');
8756: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8757: if ($crstype eq 'Community') {
8758: $first = '0';
8759: } else {
8760: $first = int(1+rand(9));
8761: }
8762: $uname=$first.
8763: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8764: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8765: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8766: $uhome=&homeserver($uname,$udom,'true');
8767: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8768: return 'error: unable to generate unique course-ID';
8769: }
8770: }
8771: return $uname;
8772: }
8773:
8774: sub is_course {
8775: my ($cdom, $cnum) = scalar(@_) == 1 ?
8776: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8777:
8778: return unless $cdom and $cnum;
8779:
8780: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8781: '.');
8782:
8783: return unless(exists($courses{$cdom.'_'.$cnum}));
8784: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8785: }
8786:
8787: sub store_userdata {
8788: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8789: my $result;
8790: if ($datakey ne '') {
8791: if (ref($storehash) eq 'HASH') {
8792: if ($udom eq '' || $uname eq '') {
8793: $udom = $env{'user.domain'};
8794: $uname = $env{'user.name'};
8795: }
8796: my $uhome=&homeserver($uname,$udom);
8797: if (($uhome eq '') || ($uhome eq 'no_host')) {
8798: $result = 'error: no_host';
8799: } else {
8800: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8801: $storehash->{'host'} = $perlvar{'lonHostID'};
8802:
8803: my $namevalue='';
8804: foreach my $key (keys(%{$storehash})) {
8805: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8806: }
8807: $namevalue=~s/\&$//;
8808: unless ($namespace eq 'courserequests') {
8809: $datakey = &escape($datakey);
8810: }
8811: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8812: $namevalue,$uhome);
8813: }
8814: } else {
8815: $result = 'error: data to store was not a hash reference';
8816: }
8817: } else {
8818: $result= 'error: invalid requestkey';
8819: }
8820: return $result;
8821: }
8822:
8823: # ---------------------------------------------------------- Assign Custom Role
8824:
8825: sub assigncustomrole {
8826: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8827: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8828: $end,$start,$deleteflag,$selfenroll,$context);
8829: }
8830:
8831: # ----------------------------------------------------------------- Revoke Role
8832:
8833: sub revokerole {
8834: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8835: my $now=time;
8836: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8837: }
8838:
8839: # ---------------------------------------------------------- Revoke Custom Role
8840:
8841: sub revokecustomrole {
8842: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8843: my $now=time;
8844: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8845: $deleteflag,$selfenroll,$context);
8846: }
8847:
8848: # ------------------------------------------------------------ Disk usage
8849: sub diskusage {
8850: my ($udom,$uname,$directorypath,$getpropath)=@_;
8851: $directorypath =~ s/\/$//;
8852: my $listing=&reply('du2:'.&escape($directorypath).':'
8853: .&escape($getpropath).':'.&escape($uname).':'
8854: .&escape($udom),homeserver($uname,$udom));
8855: if ($listing eq 'unknown_cmd') {
8856: if ($getpropath) {
8857: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8858: }
8859: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8860: }
8861: return $listing;
8862: }
8863:
8864: sub is_locked {
8865: my ($file_name, $domain, $user, $which) = @_;
8866: my @check;
8867: my $is_locked;
8868: push (@check,$file_name);
8869: my %locked = &get('file_permissions',\@check,
8870: $env{'user.domain'},$env{'user.name'});
8871: my ($tmp)=keys(%locked);
8872: if ($tmp=~/^error:/) { undef(%locked); }
8873:
8874: if (ref($locked{$file_name}) eq 'ARRAY') {
8875: $is_locked = 'false';
8876: foreach my $entry (@{$locked{$file_name}}) {
8877: if (ref($entry) eq 'ARRAY') {
8878: $is_locked = 'true';
8879: if (ref($which) eq 'ARRAY') {
8880: push(@{$which},$entry);
8881: } else {
8882: last;
8883: }
8884: }
8885: }
8886: } else {
8887: $is_locked = 'false';
8888: }
8889: return $is_locked;
8890: }
8891:
8892: sub declutter_portfile {
8893: my ($file) = @_;
8894: $file =~ s{^(/portfolio/|portfolio/)}{/};
8895: return $file;
8896: }
8897:
8898: # ------------------------------------------------------------- Mark as Read Only
8899:
8900: sub mark_as_readonly {
8901: my ($domain,$user,$files,$what) = @_;
8902: my %current_permissions = &dump('file_permissions',$domain,$user);
8903: my ($tmp)=keys(%current_permissions);
8904: if ($tmp=~/^error:/) { undef(%current_permissions); }
8905: foreach my $file (@{$files}) {
8906: $file = &declutter_portfile($file);
8907: push(@{$current_permissions{$file}},$what);
8908: }
8909: &put('file_permissions',\%current_permissions,$domain,$user);
8910: return;
8911: }
8912:
8913: # ------------------------------------------------------------Save Selected Files
8914:
8915: sub save_selected_files {
8916: my ($user, $path, @files) = @_;
8917: my $filename = $user."savedfiles";
8918: my @other_files = &files_not_in_path($user, $path);
8919: open (OUT, '>'.$tmpdir.$filename);
8920: foreach my $file (@files) {
8921: print (OUT $env{'form.currentpath'}.$file."\n");
8922: }
8923: foreach my $file (@other_files) {
8924: print (OUT $file."\n");
8925: }
8926: close (OUT);
8927: return 'ok';
8928: }
8929:
8930: sub clear_selected_files {
8931: my ($user) = @_;
8932: my $filename = $user."savedfiles";
8933: open (OUT, '>'.LONCAPA::tempdir().$filename);
8934: print (OUT undef);
8935: close (OUT);
8936: return ("ok");
8937: }
8938:
8939: sub files_in_path {
8940: my ($user, $path) = @_;
8941: my $filename = $user."savedfiles";
8942: my %return_files;
8943: open (IN, '<'.LONCAPA::tempdir().$filename);
8944: while (my $line_in = <IN>) {
8945: chomp ($line_in);
8946: my @paths_and_file = split (m!/!, $line_in);
8947: my $file_part = pop (@paths_and_file);
8948: my $path_part = join ('/', @paths_and_file);
8949: $path_part.='/';
8950: my $path_and_file = $path_part.$file_part;
8951: if ($path_part eq $path) {
8952: $return_files{$file_part}= 'selected';
8953: }
8954: }
8955: close (IN);
8956: return (\%return_files);
8957: }
8958:
8959: # called in portfolio select mode, to show files selected NOT in current directory
8960: sub files_not_in_path {
8961: my ($user, $path) = @_;
8962: my $filename = $user."savedfiles";
8963: my @return_files;
8964: my $path_part;
8965: open(IN, '<'.LONCAPA::.$filename);
8966: while (my $line = <IN>) {
8967: #ok, I know it's clunky, but I want it to work
8968: my @paths_and_file = split(m|/|, $line);
8969: my $file_part = pop(@paths_and_file);
8970: chomp($file_part);
8971: my $path_part = join('/', @paths_and_file);
8972: $path_part .= '/';
8973: my $path_and_file = $path_part.$file_part;
8974: if ($path_part ne $path) {
8975: push(@return_files, ($path_and_file));
8976: }
8977: }
8978: close(OUT);
8979: return (@return_files);
8980: }
8981:
8982: #----------------------------------------------Get portfolio file permissions
8983:
8984: sub get_portfile_permissions {
8985: my ($domain,$user) = @_;
8986: my %current_permissions = &dump('file_permissions',$domain,$user);
8987: my ($tmp)=keys(%current_permissions);
8988: if ($tmp=~/^error:/) { undef(%current_permissions); }
8989: return \%current_permissions;
8990: }
8991:
8992: #---------------------------------------------Get portfolio file access controls
8993:
8994: sub get_access_controls {
8995: my ($current_permissions,$group,$file) = @_;
8996: my %access;
8997: my $real_file = $file;
8998: $file =~ s/\.meta$//;
8999: if (defined($file)) {
9000: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9001: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9002: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9003: }
9004: }
9005: } else {
9006: foreach my $key (keys(%{$current_permissions})) {
9007: if ($key =~ /\0accesscontrol$/) {
9008: if (defined($group)) {
9009: if ($key !~ m-^\Q$group\E/-) {
9010: next;
9011: }
9012: }
9013: my ($fullpath) = split(/\0/,$key);
9014: if (ref($$current_permissions{$key}) eq 'HASH') {
9015: foreach my $control (keys(%{$$current_permissions{$key}})) {
9016: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9017: }
9018: }
9019: }
9020: }
9021: }
9022: return %access;
9023: }
9024:
9025: sub modify_access_controls {
9026: my ($file_name,$changes,$domain,$user)=@_;
9027: my ($outcome,$deloutcome);
9028: my %store_permissions;
9029: my %new_values;
9030: my %new_control;
9031: my %translation;
9032: my @deletions = ();
9033: my $now = time;
9034: if (exists($$changes{'activate'})) {
9035: if (ref($$changes{'activate'}) eq 'HASH') {
9036: my @newitems = sort(keys(%{$$changes{'activate'}}));
9037: my $numnew = scalar(@newitems);
9038: for (my $i=0; $i<$numnew; $i++) {
9039: my $newkey = $newitems[$i];
9040: my $newid = &Apache::loncommon::get_cgi_id();
9041: if ($newkey =~ /^\d+:/) {
9042: $newkey =~ s/^(\d+)/$newid/;
9043: $translation{$1} = $newid;
9044: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9045: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9046: $translation{$1} = $newid;
9047: }
9048: $new_values{$file_name."\0".$newkey} =
9049: $$changes{'activate'}{$newitems[$i]};
9050: $new_control{$newkey} = $now;
9051: }
9052: }
9053: }
9054: my %todelete;
9055: my %changed_items;
9056: foreach my $action ('delete','update') {
9057: if (exists($$changes{$action})) {
9058: if (ref($$changes{$action}) eq 'HASH') {
9059: foreach my $key (keys(%{$$changes{$action}})) {
9060: my ($itemnum) = ($key =~ /^([^:]+):/);
9061: if ($action eq 'delete') {
9062: $todelete{$itemnum} = 1;
9063: } else {
9064: $changed_items{$itemnum} = $key;
9065: }
9066: }
9067: }
9068: }
9069: }
9070: # get lock on access controls for file.
9071: my $lockhash = {
9072: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9073: ':'.$env{'user.domain'},
9074: };
9075: my $tries = 0;
9076: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9077:
9078: while (($gotlock ne 'ok') && $tries <3) {
9079: $tries ++;
9080: sleep 1;
9081: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9082: }
9083: if ($gotlock eq 'ok') {
9084: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9085: my ($tmp)=keys(%curr_permissions);
9086: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9087: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9088: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9089: if (ref($curr_controls) eq 'HASH') {
9090: foreach my $control_item (keys(%{$curr_controls})) {
9091: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9092: if (defined($todelete{$itemnum})) {
9093: push(@deletions,$file_name."\0".$control_item);
9094: } else {
9095: if (defined($changed_items{$itemnum})) {
9096: $new_control{$changed_items{$itemnum}} = $now;
9097: push(@deletions,$file_name."\0".$control_item);
9098: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9099: } else {
9100: $new_control{$control_item} = $$curr_controls{$control_item};
9101: }
9102: }
9103: }
9104: }
9105: }
9106: my ($group);
9107: if (&is_course($domain,$user)) {
9108: ($group,my $file) = split(/\//,$file_name,2);
9109: }
9110: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9111: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9112: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9113: # remove lock
9114: my @del_lock = ($file_name."\0".'locked_access_records');
9115: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9116: my $sqlresult =
9117: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9118: $group);
9119: } else {
9120: $outcome = "error: could not obtain lockfile\n";
9121: }
9122: return ($outcome,$deloutcome,\%new_values,\%translation);
9123: }
9124:
9125: sub make_public_indefinitely {
9126: my ($requrl) = @_;
9127: my $now = time;
9128: my $action = 'activate';
9129: my $aclnum = 0;
9130: if (&is_portfolio_url($requrl)) {
9131: my (undef,$udom,$unum,$file_name,$group) =
9132: &parse_portfolio_url($requrl);
9133: my $current_perms = &get_portfile_permissions($udom,$unum);
9134: my %access_controls = &get_access_controls($current_perms,
9135: $group,$file_name);
9136: foreach my $key (keys(%{$access_controls{$file_name}})) {
9137: my ($num,$scope,$end,$start) =
9138: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9139: if ($scope eq 'public') {
9140: if ($start <= $now && $end == 0) {
9141: $action = 'none';
9142: } else {
9143: $action = 'update';
9144: $aclnum = $num;
9145: }
9146: last;
9147: }
9148: }
9149: if ($action eq 'none') {
9150: return 'ok';
9151: } else {
9152: my %changes;
9153: my $newend = 0;
9154: my $newstart = $now;
9155: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
9156: $changes{$action}{$newkey} = {
9157: type => 'public',
9158: time => {
9159: start => $newstart,
9160: end => $newend,
9161: },
9162: };
9163: my ($outcome,$deloutcome,$new_values,$translation) =
9164: &modify_access_controls($file_name,\%changes,$udom,$unum);
9165: return $outcome;
9166: }
9167: } else {
9168: return 'invalid';
9169: }
9170: }
9171:
9172: #------------------------------------------------------Get Marked as Read Only
9173:
9174: sub get_marked_as_readonly {
9175: my ($domain,$user,$what,$group) = @_;
9176: my $current_permissions = &get_portfile_permissions($domain,$user);
9177: my @readonly_files;
9178: my $cmp1=$what;
9179: if (ref($what)) { $cmp1=join('',@{$what}) };
9180: while (my ($file_name,$value) = each(%{$current_permissions})) {
9181: if (defined($group)) {
9182: if ($file_name !~ m-^\Q$group\E/-) {
9183: next;
9184: }
9185: }
9186: if (ref($value) eq "ARRAY"){
9187: foreach my $stored_what (@{$value}) {
9188: my $cmp2=$stored_what;
9189: if (ref($stored_what) eq 'ARRAY') {
9190: $cmp2=join('',@{$stored_what});
9191: }
9192: if ($cmp1 eq $cmp2) {
9193: push(@readonly_files, $file_name);
9194: last;
9195: } elsif (!defined($what)) {
9196: push(@readonly_files, $file_name);
9197: last;
9198: }
9199: }
9200: }
9201: }
9202: return @readonly_files;
9203: }
9204: #-----------------------------------------------------------Get Marked as Read Only Hash
9205:
9206: sub get_marked_as_readonly_hash {
9207: my ($current_permissions,$group,$what) = @_;
9208: my %readonly_files;
9209: while (my ($file_name,$value) = each(%{$current_permissions})) {
9210: if (defined($group)) {
9211: if ($file_name !~ m-^\Q$group\E/-) {
9212: next;
9213: }
9214: }
9215: if (ref($value) eq "ARRAY"){
9216: foreach my $stored_what (@{$value}) {
9217: if (ref($stored_what) eq 'ARRAY') {
9218: foreach my $lock_descriptor(@{$stored_what}) {
9219: if ($lock_descriptor eq 'graded') {
9220: $readonly_files{$file_name} = 'graded';
9221: } elsif ($lock_descriptor eq 'handback') {
9222: $readonly_files{$file_name} = 'handback';
9223: } else {
9224: if (!exists($readonly_files{$file_name})) {
9225: $readonly_files{$file_name} = 'locked';
9226: }
9227: }
9228: }
9229: }
9230: }
9231: }
9232: }
9233: return %readonly_files;
9234: }
9235: # ------------------------------------------------------------ Unmark as Read Only
9236:
9237: sub unmark_as_readonly {
9238: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9239: # for portfolio submissions, $what contains [$symb,$crsid]
9240: my ($domain,$user,$what,$file_name,$group) = @_;
9241: $file_name = &declutter_portfile($file_name);
9242: my $symb_crs = $what;
9243: if (ref($what)) { $symb_crs=join('',@$what); }
9244: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9245: my ($tmp)=keys(%current_permissions);
9246: if ($tmp=~/^error:/) { undef(%current_permissions); }
9247: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9248: foreach my $file (@readonly_files) {
9249: my $clean_file = &declutter_portfile($file);
9250: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9251: my $current_locks = $current_permissions{$file};
9252: my @new_locks;
9253: my @del_keys;
9254: if (ref($current_locks) eq "ARRAY"){
9255: foreach my $locker (@{$current_locks}) {
9256: my $compare=$locker;
9257: if (ref($locker) eq 'ARRAY') {
9258: $compare=join('',@{$locker});
9259: if ($compare ne $symb_crs) {
9260: push(@new_locks, $locker);
9261: }
9262: }
9263: }
9264: if (scalar(@new_locks) > 0) {
9265: $current_permissions{$file} = \@new_locks;
9266: } else {
9267: push(@del_keys, $file);
9268: &del('file_permissions',\@del_keys, $domain, $user);
9269: delete($current_permissions{$file});
9270: }
9271: }
9272: }
9273: &put('file_permissions',\%current_permissions,$domain,$user);
9274: return;
9275: }
9276:
9277: # ------------------------------------------------------------ Directory lister
9278:
9279: sub dirlist {
9280: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9281: $uri=~s/^\///;
9282: $uri=~s/\/$//;
9283: my ($udom, $uname);
9284: if ($getuserdir) {
9285: $udom = $userdomain;
9286: $uname = $username;
9287: } else {
9288: (undef,$udom,$uname)=split(/\//,$uri);
9289: if(defined($userdomain)) {
9290: $udom = $userdomain;
9291: }
9292: if(defined($username)) {
9293: $uname = $username;
9294: }
9295: }
9296: my ($dirRoot,$listing,@listing_results);
9297:
9298: $dirRoot = $perlvar{'lonDocRoot'};
9299: if (defined($getpropath)) {
9300: $dirRoot = &propath($udom,$uname);
9301: $dirRoot =~ s/\/$//;
9302: } elsif (defined($getuserdir)) {
9303: my $subdir=$uname.'__';
9304: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9305: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9306: ."/$udom/$subdir/$uname";
9307: } elsif (defined($alternateRoot)) {
9308: $dirRoot = $alternateRoot;
9309: }
9310:
9311: if($udom) {
9312: if($uname) {
9313: my $uhome = &homeserver($uname,$udom);
9314: if ($uhome eq 'no_host') {
9315: return ([],'no_host');
9316: }
9317: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9318: .$getuserdir.':'.&escape($dirRoot)
9319: .':'.&escape($uname).':'.&escape($udom),$uhome);
9320: if ($listing eq 'unknown_cmd') {
9321: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9322: } else {
9323: @listing_results = map { &unescape($_); } split(/:/,$listing);
9324: }
9325: if ($listing eq 'unknown_cmd') {
9326: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9327: @listing_results = split(/:/,$listing);
9328: } else {
9329: @listing_results = map { &unescape($_); } split(/:/,$listing);
9330: }
9331: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9332: ($listing eq 'rejected') || ($listing eq 'refused') ||
9333: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9334: return ([],$listing);
9335: } else {
9336: return (\@listing_results);
9337: }
9338: } elsif(!$alternateRoot) {
9339: my (%allusers,%listerror);
9340: my %servers = &get_servers($udom,'library');
9341: foreach my $tryserver (keys(%servers)) {
9342: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9343: &escape($udom),$tryserver);
9344: if ($listing eq 'unknown_cmd') {
9345: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9346: $udom, $tryserver);
9347: } else {
9348: @listing_results = map { &unescape($_); } split(/:/,$listing);
9349: }
9350: if ($listing eq 'unknown_cmd') {
9351: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9352: $udom, $tryserver);
9353: @listing_results = split(/:/,$listing);
9354: } else {
9355: @listing_results =
9356: map { &unescape($_); } split(/:/,$listing);
9357: }
9358: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9359: ($listing eq 'rejected') || ($listing eq 'refused') ||
9360: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9361: $listerror{$tryserver} = $listing;
9362: } else {
9363: foreach my $line (@listing_results) {
9364: my ($entry) = split(/&/,$line,2);
9365: $allusers{$entry} = 1;
9366: }
9367: }
9368: }
9369: my @alluserslist=();
9370: foreach my $user (sort(keys(%allusers))) {
9371: push(@alluserslist,$user.'&user');
9372: }
9373: return (\@alluserslist);
9374: } else {
9375: return ([],'missing username');
9376: }
9377: } elsif(!defined($getpropath)) {
9378: my $path = $perlvar{'lonDocRoot'}.'/res/';
9379: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9380: return (\@all_domains);
9381: } else {
9382: return ([],'missing domain');
9383: }
9384: }
9385:
9386: # --------------------------------------------- GetFileTimestamp
9387: # This function utilizes dirlist and returns the date stamp for
9388: # when it was last modified. It will also return an error of -1
9389: # if an error occurs
9390:
9391: sub GetFileTimestamp {
9392: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9393: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9394: $studentName = &LONCAPA::clean_username($studentName);
9395: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9396: undef,$getuserdir);
9397: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9398: return -1;
9399: }
9400: if (ref($fileref) eq 'ARRAY') {
9401: my @stats = split('&',$fileref->[0]);
9402: # @stats contains first the filename, then the stat output
9403: return $stats[10]; # so this is 10 instead of 9.
9404: } else {
9405: return -1;
9406: }
9407: }
9408:
9409: sub stat_file {
9410: my ($uri) = @_;
9411: $uri = &clutter_with_no_wrapper($uri);
9412:
9413: my ($udom,$uname,$file);
9414: if ($uri =~ m-^/(uploaded|editupload)/-) {
9415: ($udom,$uname,$file) =
9416: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9417: $file = 'userfiles/'.$file;
9418: }
9419: if ($uri =~ m-^/res/-) {
9420: ($udom,$uname) =
9421: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9422: $file = $uri;
9423: }
9424:
9425: if (!$udom || !$uname || !$file) {
9426: # unable to handle the uri
9427: return ();
9428: }
9429: my $getpropath;
9430: if ($file =~ /^userfiles\//) {
9431: $getpropath = 1;
9432: }
9433: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9434: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9435: return ();
9436: } else {
9437: if (ref($listref) eq 'ARRAY') {
9438: my @stats = split('&',$listref->[0]);
9439: shift(@stats); #filename is first
9440: return @stats;
9441: }
9442: }
9443: return ();
9444: }
9445:
9446: # -------------------------------------------------------- Value of a Condition
9447:
9448: # gets the value of a specific preevaluated condition
9449: # stored in the string $env{user.state.<cid>}
9450: # or looks up a condition reference in the bighash and if if hasn't
9451: # already been evaluated recurses into docondval to get the value of
9452: # the condition, then memoizing it to
9453: # $env{user.state.<cid>.<condition>}
9454: sub directcondval {
9455: my $number=shift;
9456: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9457: &Apache::lonuserstate::evalstate();
9458: }
9459: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9460: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9461: } elsif ($number =~ /^_/) {
9462: my $sub_condition;
9463: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9464: &GDBM_READER(),0640)) {
9465: $sub_condition=$bighash{'conditions'.$number};
9466: untie(%bighash);
9467: }
9468: my $value = &docondval($sub_condition);
9469: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9470: return $value;
9471: }
9472: if ($env{'user.state.'.$env{'request.course.id'}}) {
9473: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9474: } else {
9475: return 2;
9476: }
9477: }
9478:
9479: # get the collection of conditions for this resource
9480: sub condval {
9481: my $condidx=shift;
9482: my $allpathcond='';
9483: foreach my $cond (split(/\|/,$condidx)) {
9484: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9485: $allpathcond.=
9486: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9487: }
9488: }
9489: $allpathcond=~s/\|$//;
9490: return &docondval($allpathcond);
9491: }
9492:
9493: #evaluates an expression of conditions
9494: sub docondval {
9495: my ($allpathcond) = @_;
9496: my $result=0;
9497: if ($env{'request.course.id'}
9498: && defined($allpathcond)) {
9499: my $operand='|';
9500: my @stack;
9501: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9502: if ($chunk eq '(') {
9503: push @stack,($operand,$result);
9504: } elsif ($chunk eq ')') {
9505: my $before=pop @stack;
9506: if (pop @stack eq '&') {
9507: $result=$result>$before?$before:$result;
9508: } else {
9509: $result=$result>$before?$result:$before;
9510: }
9511: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9512: $operand=$chunk;
9513: } else {
9514: my $new=directcondval($chunk);
9515: if ($operand eq '&') {
9516: $result=$result>$new?$new:$result;
9517: } else {
9518: $result=$result>$new?$result:$new;
9519: }
9520: }
9521: }
9522: }
9523: return $result;
9524: }
9525:
9526: # ---------------------------------------------------- Devalidate courseresdata
9527:
9528: sub devalidatecourseresdata {
9529: my ($coursenum,$coursedomain)=@_;
9530: my $hashid=$coursenum.':'.$coursedomain;
9531: &devalidate_cache_new('courseres',$hashid);
9532: }
9533:
9534:
9535: # --------------------------------------------------- Course Resourcedata Query
9536: #
9537: # Parameters:
9538: # $coursenum - Number of the course.
9539: # $coursedomain - Domain at which the course was created.
9540: # Returns:
9541: # A hash of the course parameters along (I think) with timestamps
9542: # and version info.
9543:
9544: sub get_courseresdata {
9545: my ($coursenum,$coursedomain)=@_;
9546: my $coursehom=&homeserver($coursenum,$coursedomain);
9547: my $hashid=$coursenum.':'.$coursedomain;
9548: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9549: my %dumpreply;
9550: unless (defined($cached)) {
9551: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9552: $result=\%dumpreply;
9553: my ($tmp) = keys(%dumpreply);
9554: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9555: &do_cache_new('courseres',$hashid,$result,600);
9556: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9557: return $tmp;
9558: } elsif ($tmp =~ /^(error)/) {
9559: $result=undef;
9560: &do_cache_new('courseres',$hashid,$result,600);
9561: }
9562: }
9563: return $result;
9564: }
9565:
9566: sub devalidateuserresdata {
9567: my ($uname,$udom)=@_;
9568: my $hashid="$udom:$uname";
9569: &devalidate_cache_new('userres',$hashid);
9570: }
9571:
9572: sub get_userresdata {
9573: my ($uname,$udom)=@_;
9574: #most student don\'t have any data set, check if there is some data
9575: if (&EXT_cache_status($udom,$uname)) { return undef; }
9576:
9577: my $hashid="$udom:$uname";
9578: my ($result,$cached)=&is_cached_new('userres',$hashid);
9579: if (!defined($cached)) {
9580: my %resourcedata=&dump('resourcedata',$udom,$uname);
9581: $result=\%resourcedata;
9582: &do_cache_new('userres',$hashid,$result,600);
9583: }
9584: my ($tmp)=keys(%$result);
9585: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9586: return $result;
9587: }
9588: #error 2 occurs when the .db doesn't exist
9589: if ($tmp!~/error: 2 /) {
9590: &logthis("<font color=\"blue\">WARNING:".
9591: " Trying to get resource data for ".
9592: $uname." at ".$udom.": ".
9593: $tmp."</font>");
9594: } elsif ($tmp=~/error: 2 /) {
9595: #&EXT_cache_set($udom,$uname);
9596: &do_cache_new('userres',$hashid,undef,600);
9597: undef($tmp); # not really an error so don't send it back
9598: }
9599: return $tmp;
9600: }
9601: #----------------------------------------------- resdata - return resource data
9602: # Purpose:
9603: # Return resource data for either users or for a course.
9604: # Parameters:
9605: # $name - Course/user name.
9606: # $domain - Name of the domain the user/course is registered on.
9607: # $type - Type of thing $name is (must be 'course' or 'user'
9608: # @which - Array of names of resources desired.
9609: # Returns:
9610: # The value of the first reasource in @which that is found in the
9611: # resource hash.
9612: # Exceptional Conditions:
9613: # If the $type passed in is not valid (not the string 'course' or
9614: # 'user', an undefined reference is returned.
9615: # If none of the resources are found, an undef is returned
9616: sub resdata {
9617: my ($name,$domain,$type,@which)=@_;
9618: my $result;
9619: if ($type eq 'course') {
9620: $result=&get_courseresdata($name,$domain);
9621: } elsif ($type eq 'user') {
9622: $result=&get_userresdata($name,$domain);
9623: }
9624: if (!ref($result)) { return $result; }
9625: foreach my $item (@which) {
9626: if (defined($result->{$item->[0]})) {
9627: return [$result->{$item->[0]},$item->[1]];
9628: }
9629: }
9630: return undef;
9631: }
9632:
9633: #
9634: # EXT resource caching routines
9635: #
9636:
9637: sub clear_EXT_cache_status {
9638: &delenv('cache.EXT.');
9639: }
9640:
9641: sub EXT_cache_status {
9642: my ($target_domain,$target_user) = @_;
9643: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9644: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9645: # We know already the user has no data
9646: return 1;
9647: } else {
9648: return 0;
9649: }
9650: }
9651:
9652: sub EXT_cache_set {
9653: my ($target_domain,$target_user) = @_;
9654: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9655: #&appenv({$cachename => time});
9656: }
9657:
9658: # --------------------------------------------------------- Value of a Variable
9659: sub EXT {
9660:
9661: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
9662: unless ($varname) { return ''; }
9663: #get real user name/domain, courseid and symb
9664: my $courseid;
9665: my $publicuser;
9666: if ($symbparm) {
9667: $symbparm=&get_symb_from_alias($symbparm);
9668: }
9669: if (!($uname && $udom)) {
9670: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9671: if (!$symbparm) { $symbparm=$cursymb; }
9672: } else {
9673: $courseid=$env{'request.course.id'};
9674: }
9675: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9676: my $rest;
9677: if (defined($therest[0])) {
9678: $rest=join('.',@therest);
9679: } else {
9680: $rest='';
9681: }
9682:
9683: my $qualifierrest=$qualifier;
9684: if ($rest) { $qualifierrest.='.'.$rest; }
9685: my $spacequalifierrest=$space;
9686: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9687: if ($realm eq 'user') {
9688: # --------------------------------------------------------------- user.resource
9689: if ($space eq 'resource') {
9690: if ( (defined($Apache::lonhomework::parsing_a_problem)
9691: || defined($Apache::lonhomework::parsing_a_task))
9692: &&
9693: ($symbparm eq &symbread()) ) {
9694: # if we are in the middle of processing the resource the
9695: # get the value we are planning on committing
9696: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9697: return $Apache::lonhomework::results{$qualifierrest};
9698: } else {
9699: return $Apache::lonhomework::history{$qualifierrest};
9700: }
9701: } else {
9702: my %restored;
9703: if ($publicuser || $env{'request.state'} eq 'construct') {
9704: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9705: } else {
9706: %restored=&restore($symbparm,$courseid,$udom,$uname);
9707: }
9708: return $restored{$qualifierrest};
9709: }
9710: # ----------------------------------------------------------------- user.access
9711: } elsif ($space eq 'access') {
9712: # FIXME - not supporting calls for a specific user
9713: return &allowed($qualifier,$rest);
9714: # ------------------------------------------ user.preferences, user.environment
9715: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9716: if (($uname eq $env{'user.name'}) &&
9717: ($udom eq $env{'user.domain'})) {
9718: return $env{join('.',('environment',$qualifierrest))};
9719: } else {
9720: my %returnhash;
9721: if (!$publicuser) {
9722: %returnhash=&userenvironment($udom,$uname,
9723: $qualifierrest);
9724: }
9725: return $returnhash{$qualifierrest};
9726: }
9727: # ----------------------------------------------------------------- user.course
9728: } elsif ($space eq 'course') {
9729: # FIXME - not supporting calls for a specific user
9730: return $env{join('.',('request.course',$qualifier))};
9731: # ------------------------------------------------------------------- user.role
9732: } elsif ($space eq 'role') {
9733: # FIXME - not supporting calls for a specific user
9734: my ($role,$where)=split(/\./,$env{'request.role'});
9735: if ($qualifier eq 'value') {
9736: return $role;
9737: } elsif ($qualifier eq 'extent') {
9738: return $where;
9739: }
9740: # ----------------------------------------------------------------- user.domain
9741: } elsif ($space eq 'domain') {
9742: return $udom;
9743: # ------------------------------------------------------------------- user.name
9744: } elsif ($space eq 'name') {
9745: return $uname;
9746: # ---------------------------------------------------- Any other user namespace
9747: } else {
9748: my %reply;
9749: if (!$publicuser) {
9750: %reply=&get($space,[$qualifierrest],$udom,$uname);
9751: }
9752: return $reply{$qualifierrest};
9753: }
9754: } elsif ($realm eq 'query') {
9755: # ---------------------------------------------- pull stuff out of query string
9756: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9757: [$spacequalifierrest]);
9758: return $env{'form.'.$spacequalifierrest};
9759: } elsif ($realm eq 'request') {
9760: # ------------------------------------------------------------- request.browser
9761: if ($space eq 'browser') {
9762: return $env{'browser.'.$qualifier};
9763: # ------------------------------------------------------------ request.filename
9764: } else {
9765: return $env{'request.'.$spacequalifierrest};
9766: }
9767: } elsif ($realm eq 'course') {
9768: # ---------------------------------------------------------- course.description
9769: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9770: } elsif ($realm eq 'resource') {
9771:
9772: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9773: if (!$symbparm) { $symbparm=&symbread(); }
9774: }
9775:
9776: if ($qualifier eq '') {
9777: if ($space eq 'title') {
9778: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9779: return &gettitle($symbparm);
9780: }
9781:
9782: if ($space eq 'map') {
9783: my ($map) = &decode_symb($symbparm);
9784: return &symbread($map);
9785: }
9786: if ($space eq 'maptitle') {
9787: my ($map) = &decode_symb($symbparm);
9788: return &gettitle($map);
9789: }
9790: if ($space eq 'filename') {
9791: if ($symbparm) {
9792: return &clutter((&decode_symb($symbparm))[2]);
9793: }
9794: return &hreflocation('',$env{'request.filename'});
9795: }
9796: }
9797:
9798: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
9799: if ($space eq 'visibleparts') {
9800: my $navmap = Apache::lonnavmaps::navmap->new();
9801: my $item;
9802: if (ref($navmap)) {
9803: my $res = $navmap->getBySymb($symbparm);
9804: my $parts = $res->parts();
9805: if (ref($parts) eq 'ARRAY') {
9806: $item = join(',',@{$parts});
9807: }
9808: undef($navmap);
9809: }
9810: return $item;
9811: }
9812: }
9813:
9814: my ($section, $group, @groups);
9815: my ($courselevelm,$courselevel);
9816: if (($courseid eq '') && ($cid)) {
9817: $courseid = $cid;
9818: }
9819: if (($symbparm && $courseid) &&
9820: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
9821:
9822: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9823:
9824: # ----------------------------------------------------- Cascading lookup scheme
9825: my $symbp=$symbparm;
9826: my $mapp=&deversion((&decode_symb($symbp))[0]);
9827:
9828: my $symbparm=$symbp.'.'.$spacequalifierrest;
9829: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9830:
9831: if (($env{'user.name'} eq $uname) &&
9832: ($env{'user.domain'} eq $udom)) {
9833: $section=$env{'request.course.sec'};
9834: @groups = split(/:/,$env{'request.course.groups'});
9835: @groups=&sort_course_groups($courseid,@groups);
9836: } else {
9837: if (! defined($usection)) {
9838: $section=&getsection($udom,$uname,$courseid);
9839: } else {
9840: $section = $usection;
9841: }
9842: @groups = &get_users_groups($udom,$uname,$courseid);
9843: }
9844:
9845: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9846: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9847: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9848:
9849: $courselevel=$courseid.'.'.$spacequalifierrest;
9850: my $courselevelr=$courseid.'.'.$symbparm;
9851: $courselevelm=$courseid.'.'.$mapparm;
9852:
9853: # ----------------------------------------------------------- first, check user
9854:
9855: my $userreply=&resdata($uname,$udom,'user',
9856: ([$courselevelr,'resource'],
9857: [$courselevelm,'map' ],
9858: [$courselevel, 'course' ]));
9859: if (defined($userreply)) { return &get_reply($userreply); }
9860:
9861: # ------------------------------------------------ second, check some of course
9862: my $coursereply;
9863: if (@groups > 0) {
9864: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9865: $mapparm,$spacequalifierrest);
9866: if (defined($coursereply)) { return &get_reply($coursereply); }
9867: }
9868:
9869: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9870: $env{'course.'.$courseid.'.domain'},
9871: 'course',
9872: ([$seclevelr, 'resource'],
9873: [$seclevelm, 'map' ],
9874: [$seclevel, 'course' ],
9875: [$courselevelr,'resource']));
9876: if (defined($coursereply)) { return &get_reply($coursereply); }
9877:
9878: # ------------------------------------------------------ third, check map parms
9879: my %parmhash=();
9880: my $thisparm='';
9881: if (tie(%parmhash,'GDBM_File',
9882: $env{'request.course.fn'}.'_parms.db',
9883: &GDBM_READER(),0640)) {
9884: $thisparm=$parmhash{$symbparm};
9885: untie(%parmhash);
9886: }
9887: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9888: }
9889: # ------------------------------------------ fourth, look in resource metadata
9890:
9891: $spacequalifierrest=~s/\./\_/;
9892: my $filename;
9893: if (!$symbparm) { $symbparm=&symbread(); }
9894: if ($symbparm) {
9895: $filename=(&decode_symb($symbparm))[2];
9896: } else {
9897: $filename=$env{'request.filename'};
9898: }
9899: my $metadata=&metadata($filename,$spacequalifierrest);
9900: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9901: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9902: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9903:
9904: # ---------------------------------------------- fourth, look in rest of course
9905: if ($symbparm && defined($courseid) &&
9906: $courseid eq $env{'request.course.id'}) {
9907: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9908: $env{'course.'.$courseid.'.domain'},
9909: 'course',
9910: ([$courselevelm,'map' ],
9911: [$courselevel, 'course']));
9912: if (defined($coursereply)) { return &get_reply($coursereply); }
9913: }
9914: # ------------------------------------------------------------------ Cascade up
9915: unless ($space eq '0') {
9916: my @parts=split(/_/,$space);
9917: my $id=pop(@parts);
9918: my $part=join('_',@parts);
9919: if ($part eq '') { $part='0'; }
9920: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9921: $symbparm,$udom,$uname,$section,1);
9922: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9923: }
9924: if ($recurse) { return undef; }
9925: my $pack_def=&packages_tab_default($filename,$varname);
9926: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9927: # ---------------------------------------------------- Any other user namespace
9928: } elsif ($realm eq 'environment') {
9929: # ----------------------------------------------------------------- environment
9930: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9931: return $env{'environment.'.$spacequalifierrest};
9932: } else {
9933: if ($uname eq 'anonymous' && $udom eq '') {
9934: return '';
9935: }
9936: my %returnhash=&userenvironment($udom,$uname,
9937: $spacequalifierrest);
9938: return $returnhash{$spacequalifierrest};
9939: }
9940: } elsif ($realm eq 'system') {
9941: # ----------------------------------------------------------------- system.time
9942: if ($space eq 'time') {
9943: return time;
9944: }
9945: } elsif ($realm eq 'server') {
9946: # ----------------------------------------------------------------- system.time
9947: if ($space eq 'name') {
9948: return $ENV{'SERVER_NAME'};
9949: }
9950: }
9951: return '';
9952: }
9953:
9954: sub get_reply {
9955: my ($reply_value) = @_;
9956: if (ref($reply_value) eq 'ARRAY') {
9957: if (wantarray) {
9958: return @$reply_value;
9959: }
9960: return $reply_value->[0];
9961: } else {
9962: return $reply_value;
9963: }
9964: }
9965:
9966: sub check_group_parms {
9967: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9968: my @groupitems = ();
9969: my $resultitem;
9970: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9971: foreach my $group (@{$groups}) {
9972: foreach my $level (@levels) {
9973: my $item = $courseid.'.['.$group.'].'.$level->[0];
9974: push(@groupitems,[$item,$level->[1]]);
9975: }
9976: }
9977: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9978: $env{'course.'.$courseid.'.domain'},
9979: 'course',@groupitems);
9980: return $coursereply;
9981: }
9982:
9983: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9984: my ($courseid,@groups) = @_;
9985: @groups = sort(@groups);
9986: return @groups;
9987: }
9988:
9989: sub packages_tab_default {
9990: my ($uri,$varname)=@_;
9991: my (undef,$part,$name)=split(/\./,$varname);
9992:
9993: my (@extension,@specifics,$do_default);
9994: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9995: my ($pack_type,$pack_part)=split(/_/,$package,2);
9996: if ($pack_type eq 'default') {
9997: $do_default=1;
9998: } elsif ($pack_type eq 'extension') {
9999: push(@extension,[$package,$pack_type,$pack_part]);
10000: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10001: # only look at packages defaults for packages that this id is
10002: push(@specifics,[$package,$pack_type,$pack_part]);
10003: }
10004: }
10005: # first look for a package that matches the requested part id
10006: foreach my $package (@specifics) {
10007: my (undef,$pack_type,$pack_part)=@{$package};
10008: next if ($pack_part ne $part);
10009: if (defined($packagetab{"$pack_type&$name&default"})) {
10010: return $packagetab{"$pack_type&$name&default"};
10011: }
10012: }
10013: # look for any possible matching non extension_ package
10014: foreach my $package (@specifics) {
10015: my (undef,$pack_type,$pack_part)=@{$package};
10016: if (defined($packagetab{"$pack_type&$name&default"})) {
10017: return $packagetab{"$pack_type&$name&default"};
10018: }
10019: if ($pack_type eq 'part') { $pack_part='0'; }
10020: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10021: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10022: }
10023: }
10024: # look for any posible extension_ match
10025: foreach my $package (@extension) {
10026: my ($package,$pack_type)=@{$package};
10027: if (defined($packagetab{"$pack_type&$name&default"})) {
10028: return $packagetab{"$pack_type&$name&default"};
10029: }
10030: if (defined($packagetab{$package."&$name&default"})) {
10031: return $packagetab{$package."&$name&default"};
10032: }
10033: }
10034: # look for a global default setting
10035: if ($do_default && defined($packagetab{"default&$name&default"})) {
10036: return $packagetab{"default&$name&default"};
10037: }
10038: return undef;
10039: }
10040:
10041: sub add_prefix_and_part {
10042: my ($prefix,$part)=@_;
10043: my $keyroot;
10044: if (defined($prefix) && $prefix !~ /^__/) {
10045: # prefix that has a part already
10046: $keyroot=$prefix;
10047: } elsif (defined($prefix)) {
10048: # prefix that is missing a part
10049: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10050: } else {
10051: # no prefix at all
10052: if (defined($part)) { $keyroot='_'.$part; }
10053: }
10054: return $keyroot;
10055: }
10056:
10057: # ---------------------------------------------------------------- Get metadata
10058:
10059: my %metaentry;
10060: my %importedpartids;
10061: sub metadata {
10062: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10063: $uri=&declutter($uri);
10064: # if it is a non metadata possible uri return quickly
10065: if (($uri eq '') ||
10066: (($uri =~ m|^/*adm/|) &&
10067: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
10068: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10069: return undef;
10070: }
10071: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
10072: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10073: return undef;
10074: }
10075: my $filename=$uri;
10076: $uri=~s/\.meta$//;
10077: #
10078: # Is the metadata already cached?
10079: # Look at timestamp of caching
10080: # Everything is cached by the main uri, libraries are never directly cached
10081: #
10082: if (!defined($liburi)) {
10083: my ($result,$cached)=&is_cached_new('meta',$uri);
10084: if (defined($cached)) { return $result->{':'.$what}; }
10085: }
10086: {
10087: # Imported parts would go here
10088: my %importedids=();
10089: my @origfileimportpartids=();
10090: my $importedparts=0;
10091: #
10092: # Is this a recursive call for a library?
10093: #
10094: # if (! exists($metacache{$uri})) {
10095: # $metacache{$uri}={};
10096: # }
10097: my $cachetime = 60*60;
10098: if ($liburi) {
10099: $liburi=&declutter($liburi);
10100: $filename=$liburi;
10101: } else {
10102: &devalidate_cache_new('meta',$uri);
10103: undef(%metaentry);
10104: }
10105: my %metathesekeys=();
10106: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10107: my $metastring;
10108: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10109: my $which = &hreflocation('','/'.($liburi || $uri));
10110: $metastring =
10111: &Apache::lonnet::ssi_body($which,
10112: ('grade_target' => 'meta'));
10113: $cachetime = 1; # only want this cached in the child not long term
10114: } elsif (($uri !~ m -^(editupload)/-) &&
10115: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10116: my $file=&filelocation('',&clutter($filename));
10117: #push(@{$metaentry{$uri.'.file'}},$file);
10118: $metastring=&getfile($file);
10119: }
10120: my $parser=HTML::LCParser->new(\$metastring);
10121: my $token;
10122: undef %metathesekeys;
10123: while ($token=$parser->get_token) {
10124: if ($token->[0] eq 'S') {
10125: if (defined($token->[2]->{'package'})) {
10126: #
10127: # This is a package - get package info
10128: #
10129: my $package=$token->[2]->{'package'};
10130: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10131: if (defined($token->[2]->{'id'})) {
10132: $keyroot.='_'.$token->[2]->{'id'};
10133: }
10134: if ($metaentry{':packages'}) {
10135: $metaentry{':packages'}.=','.$package.$keyroot;
10136: } else {
10137: $metaentry{':packages'}=$package.$keyroot;
10138: }
10139: foreach my $pack_entry (keys(%packagetab)) {
10140: my $part=$keyroot;
10141: $part=~s/^\_//;
10142: if ($pack_entry=~/^\Q$package\E\&/ ||
10143: $pack_entry=~/^\Q$package\E_0\&/) {
10144: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10145: # ignore package.tab specified default values
10146: # here &package_tab_default() will fetch those
10147: if ($subp eq 'default') { next; }
10148: my $value=$packagetab{$pack_entry};
10149: my $unikey;
10150: if ($pack =~ /_0$/) {
10151: $unikey='parameter_0_'.$name;
10152: $part=0;
10153: } else {
10154: $unikey='parameter'.$keyroot.'_'.$name;
10155: }
10156: if ($subp eq 'display') {
10157: $value.=' [Part: '.$part.']';
10158: }
10159: $metaentry{':'.$unikey.'.part'}=$part;
10160: $metathesekeys{$unikey}=1;
10161: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10162: $metaentry{':'.$unikey.'.'.$subp}=$value;
10163: }
10164: if (defined($metaentry{':'.$unikey.'.default'})) {
10165: $metaentry{':'.$unikey}=
10166: $metaentry{':'.$unikey.'.default'};
10167: }
10168: }
10169: }
10170: } else {
10171: #
10172: # This is not a package - some other kind of start tag
10173: #
10174: my $entry=$token->[1];
10175: my $unikey='';
10176:
10177: if ($entry eq 'import') {
10178: #
10179: # Importing a library here
10180: #
10181: my $location=$parser->get_text('/import');
10182: my $dir=$filename;
10183: $dir=~s|[^/]*$||;
10184: $location=&filelocation($dir,$location);
10185:
10186: my $importmode=$token->[2]->{'importmode'};
10187: if ($importmode eq 'problem') {
10188: # Import as problem/response
10189: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10190: } elsif ($importmode eq 'part') {
10191: # Import as part(s)
10192: $importedparts=1;
10193: # We need to get the original file and the imported file to get the part order correct
10194: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10195: # Load and inspect original file
10196: if ($#origfileimportpartids<0) {
10197: undef(%importedpartids);
10198: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10199: my $origfile=&getfile($origfilelocation);
10200: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10201: }
10202:
10203: # Load and inspect imported file
10204: my $impfile=&getfile($location);
10205: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10206: if ($#impfilepartids>=0) {
10207: # This problem had parts
10208: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10209: } else {
10210: # Importing by turning a single problem into a problem part
10211: # It gets the import-tags ID as part-ID
10212: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10213: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10214: }
10215: } else {
10216: # Normal import
10217: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10218: if (defined($token->[2]->{'id'})) {
10219: $unikey.='_'.$token->[2]->{'id'};
10220: }
10221: }
10222:
10223: if ($depthcount<20) {
10224: my $metadata =
10225: &metadata($uri,'keys', $location,$unikey,
10226: $depthcount+1);
10227: foreach my $meta (split(',',$metadata)) {
10228: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10229: $metathesekeys{$meta}=1;
10230: }
10231:
10232: }
10233: } else {
10234: #
10235: # Not importing, some other kind of non-package, non-library start tag
10236: #
10237: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10238: if (defined($token->[2]->{'id'})) {
10239: $unikey.='_'.$token->[2]->{'id'};
10240: }
10241: if (defined($token->[2]->{'name'})) {
10242: $unikey.='_'.$token->[2]->{'name'};
10243: }
10244: $metathesekeys{$unikey}=1;
10245: foreach my $param (@{$token->[3]}) {
10246: $metaentry{':'.$unikey.'.'.$param} =
10247: $token->[2]->{$param};
10248: }
10249: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10250: my $default=$metaentry{':'.$unikey.'.default'};
10251: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10252: # only ws inside the tag, and not in default, so use default
10253: # as value
10254: $metaentry{':'.$unikey}=$default;
10255: } elsif ( $internaltext =~ /\S/ ) {
10256: # something interesting inside the tag
10257: $metaentry{':'.$unikey}=$internaltext;
10258: } else {
10259: # no interesting values, don't set a default
10260: }
10261: # end of not-a-package not-a-library import
10262: }
10263: # end of not-a-package start tag
10264: }
10265: # the next is the end of "start tag"
10266: }
10267: }
10268: my ($extension) = ($uri =~ /\.(\w+)$/);
10269: $extension = lc($extension);
10270: if ($extension eq 'htm') { $extension='html'; }
10271:
10272: foreach my $key (keys(%packagetab)) {
10273: #no specific packages #how's our extension
10274: if ($key!~/^extension_\Q$extension\E&/) { next; }
10275: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10276: \%metathesekeys);
10277: }
10278:
10279: if (!exists($metaentry{':packages'})
10280: || $packagetab{"import_defaults&extension_$extension"}) {
10281: foreach my $key (keys(%packagetab)) {
10282: #no specific packages well let's get default then
10283: if ($key!~/^default&/) { next; }
10284: &metadata_create_package_def($uri,$key,'default',
10285: \%metathesekeys);
10286: }
10287: }
10288: # are there custom rights to evaluate
10289: if ($metaentry{':copyright'} eq 'custom') {
10290:
10291: #
10292: # Importing a rights file here
10293: #
10294: unless ($depthcount) {
10295: my $location=$metaentry{':customdistributionfile'};
10296: my $dir=$filename;
10297: $dir=~s|[^/]*$||;
10298: $location=&filelocation($dir,$location);
10299: my $rights_metadata =
10300: &metadata($uri,'keys',$location,'_rights',
10301: $depthcount+1);
10302: foreach my $rights (split(',',$rights_metadata)) {
10303: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10304: $metathesekeys{$rights}=1;
10305: }
10306: }
10307: }
10308: # uniqifiy package listing
10309: my %seen;
10310: my @uniq_packages =
10311: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10312: $metaentry{':packages'} = join(',',@uniq_packages);
10313:
10314: if ($importedparts) {
10315: # We had imported parts and need to rebuild partorder
10316: $metaentry{':partorder'}='';
10317: $metathesekeys{'partorder'}=1;
10318: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10319: if ($origfileimportpartids[$index] eq 'part') {
10320: # original part, part of the problem
10321: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10322: } else {
10323: # we have imported parts at this position
10324: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10325: }
10326: }
10327: $metaentry{':partorder'}=~s/^\,//;
10328: }
10329:
10330: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10331: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10332: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10333: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10334: # this is the end of "was not already recently cached
10335: }
10336: return $metaentry{':'.$what};
10337: }
10338:
10339: sub metadata_create_package_def {
10340: my ($uri,$key,$package,$metathesekeys)=@_;
10341: my ($pack,$name,$subp)=split(/\&/,$key);
10342: if ($subp eq 'default') { next; }
10343:
10344: if (defined($metaentry{':packages'})) {
10345: $metaentry{':packages'}.=','.$package;
10346: } else {
10347: $metaentry{':packages'}=$package;
10348: }
10349: my $value=$packagetab{$key};
10350: my $unikey;
10351: $unikey='parameter_0_'.$name;
10352: $metaentry{':'.$unikey.'.part'}=0;
10353: $$metathesekeys{$unikey}=1;
10354: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10355: $metaentry{':'.$unikey.'.'.$subp}=$value;
10356: }
10357: if (defined($metaentry{':'.$unikey.'.default'})) {
10358: $metaentry{':'.$unikey}=
10359: $metaentry{':'.$unikey.'.default'};
10360: }
10361: }
10362:
10363: sub metadata_generate_part0 {
10364: my ($metadata,$metacache,$uri) = @_;
10365: my %allnames;
10366: foreach my $metakey (keys(%$metadata)) {
10367: if ($metakey=~/^parameter\_(.*)/) {
10368: my $part=$$metacache{':'.$metakey.'.part'};
10369: my $name=$$metacache{':'.$metakey.'.name'};
10370: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10371: $allnames{$name}=$part;
10372: }
10373: }
10374: }
10375: foreach my $name (keys(%allnames)) {
10376: $$metadata{"parameter_0_$name"}=1;
10377: my $key=":parameter_0_$name";
10378: $$metacache{"$key.part"}='0';
10379: $$metacache{"$key.name"}=$name;
10380: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10381: $allnames{$name}.'_'.$name.
10382: '.type'};
10383: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10384: '.display'};
10385: my $expr='[Part: '.$allnames{$name}.']';
10386: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10387: $$metacache{"$key.display"}=$olddis;
10388: }
10389: }
10390:
10391: # ------------------------------------------------------ Devalidate title cache
10392:
10393: sub devalidate_title_cache {
10394: my ($url)=@_;
10395: if (!$env{'request.course.id'}) { return; }
10396: my $symb=&symbread($url);
10397: if (!$symb) { return; }
10398: my $key=$env{'request.course.id'}."\0".$symb;
10399: &devalidate_cache_new('title',$key);
10400: }
10401:
10402: # ------------------------------------------------- Get the title of a course
10403:
10404: sub current_course_title {
10405: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10406: }
10407: # ------------------------------------------------- Get the title of a resource
10408:
10409: sub gettitle {
10410: my $urlsymb=shift;
10411: my $symb=&symbread($urlsymb);
10412: if ($symb) {
10413: my $key=$env{'request.course.id'}."\0".$symb;
10414: my ($result,$cached)=&is_cached_new('title',$key);
10415: if (defined($cached)) {
10416: return $result;
10417: }
10418: my ($map,$resid,$url)=&decode_symb($symb);
10419: my $title='';
10420: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10421: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10422: } else {
10423: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10424: &GDBM_READER(),0640)) {
10425: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10426: $title=$bighash{'title_'.$mapid.'.'.$resid};
10427: untie(%bighash);
10428: }
10429: }
10430: $title=~s/\&colon\;/\:/gs;
10431: if ($title) {
10432: # Remember both $symb and $title for dynamic metadata
10433: $accesshash{$symb.'___crstitle'}=$title;
10434: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10435: # Cache this title and then return it
10436: return &do_cache_new('title',$key,$title,600);
10437: }
10438: $urlsymb=$url;
10439: }
10440: my $title=&metadata($urlsymb,'title');
10441: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10442: return $title;
10443: }
10444:
10445: sub get_slot {
10446: my ($which,$cnum,$cdom)=@_;
10447: if (!$cnum || !$cdom) {
10448: (undef,my $courseid)=&whichuser();
10449: $cdom=$env{'course.'.$courseid.'.domain'};
10450: $cnum=$env{'course.'.$courseid.'.num'};
10451: }
10452: my $key=join("\0",'slots',$cdom,$cnum,$which);
10453: my %slotinfo;
10454: if (exists($remembered{$key})) {
10455: $slotinfo{$which} = $remembered{$key};
10456: } else {
10457: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10458: &Apache::lonhomework::showhash(%slotinfo);
10459: my ($tmp)=keys(%slotinfo);
10460: if ($tmp=~/^error:/) { return (); }
10461: $remembered{$key} = $slotinfo{$which};
10462: }
10463: if (ref($slotinfo{$which}) eq 'HASH') {
10464: return %{$slotinfo{$which}};
10465: }
10466: return $slotinfo{$which};
10467: }
10468:
10469: sub get_reservable_slots {
10470: my ($cnum,$cdom,$uname,$udom) = @_;
10471: my $now = time;
10472: my $reservable_info;
10473: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10474: if (exists($remembered{$key})) {
10475: $reservable_info = $remembered{$key};
10476: } else {
10477: my %resv;
10478: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10479: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10480: $reservable_info = \%resv;
10481: $remembered{$key} = $reservable_info;
10482: }
10483: return $reservable_info;
10484: }
10485:
10486: sub get_course_slots {
10487: my ($cnum,$cdom) = @_;
10488: my $hashid=$cnum.':'.$cdom;
10489: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10490: if (defined($cached)) {
10491: if (ref($result) eq 'HASH') {
10492: return %{$result};
10493: }
10494: } else {
10495: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10496: my ($tmp) = keys(%slots);
10497: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10498: &do_cache_new('allslots',$hashid,\%slots,600);
10499: return %slots;
10500: }
10501: }
10502: return;
10503: }
10504:
10505: sub devalidate_slots_cache {
10506: my ($cnum,$cdom)=@_;
10507: my $hashid=$cnum.':'.$cdom;
10508: &devalidate_cache_new('allslots',$hashid);
10509: }
10510:
10511: sub get_coursechange {
10512: my ($cdom,$cnum) = @_;
10513: if ($cdom eq '' || $cnum eq '') {
10514: return unless ($env{'request.course.id'});
10515: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10516: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10517: }
10518: my $hashid=$cdom.'_'.$cnum;
10519: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10520: if ((defined($cached)) && ($change ne '')) {
10521: return $change;
10522: } else {
10523: my %crshash;
10524: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10525: if ($crshash{'internal.contentchange'} eq '') {
10526: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10527: if ($change eq '') {
10528: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10529: $change = $crshash{'internal.created'};
10530: }
10531: } else {
10532: $change = $crshash{'internal.contentchange'};
10533: }
10534: my $cachetime = 600;
10535: &do_cache_new('crschange',$hashid,$change,$cachetime);
10536: }
10537: return $change;
10538: }
10539:
10540: sub devalidate_coursechange_cache {
10541: my ($cnum,$cdom)=@_;
10542: my $hashid=$cnum.':'.$cdom;
10543: &devalidate_cache_new('crschange',$hashid);
10544: }
10545:
10546: # ------------------------------------------------- Update symbolic store links
10547:
10548: sub symblist {
10549: my ($mapname,%newhash)=@_;
10550: $mapname=&deversion(&declutter($mapname));
10551: my %hash;
10552: if (($env{'request.course.fn'}) && (%newhash)) {
10553: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10554: &GDBM_WRCREAT(),0640)) {
10555: foreach my $url (keys(%newhash)) {
10556: next if ($url eq 'last_known'
10557: && $env{'form.no_update_last_known'});
10558: $hash{declutter($url)}=&encode_symb($mapname,
10559: $newhash{$url}->[1],
10560: $newhash{$url}->[0]);
10561: }
10562: if (untie(%hash)) {
10563: return 'ok';
10564: }
10565: }
10566: }
10567: return 'error';
10568: }
10569:
10570: # --------------------------------------------------------------- Verify a symb
10571:
10572: sub symbverify {
10573: my ($symb,$thisurl,$encstate)=@_;
10574: my $thisfn=$thisurl;
10575: $thisfn=&declutter($thisfn);
10576: # direct jump to resource in page or to a sequence - will construct own symbs
10577: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10578: # check URL part
10579: my ($map,$resid,$url)=&decode_symb($symb);
10580:
10581: unless ($url eq $thisfn) { return 0; }
10582:
10583: $symb=&symbclean($symb);
10584: $thisurl=&deversion($thisurl);
10585: $thisfn=&deversion($thisfn);
10586:
10587: my %bighash;
10588: my $okay=0;
10589:
10590: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10591: &GDBM_READER(),0640)) {
10592: my $noclutter;
10593: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10594: $thisurl =~ s/\?.+$//;
10595: if ($map =~ m{^uploaded/.+\.page$}) {
10596: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
10597: $thisurl =~ s{^\Qhttp://https://\E}{https://};
10598: $noclutter = 1;
10599: }
10600: }
10601: my $ids;
10602: if ($noclutter) {
10603: $ids=$bighash{'ids_'.$thisurl};
10604: } else {
10605: $ids=$bighash{'ids_'.&clutter($thisurl)};
10606: }
10607: unless ($ids) {
10608: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10609: $ids=$bighash{$idkey};
10610: }
10611: if ($ids) {
10612: # ------------------------------------------------------------------- Has ID(s)
10613: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10614: $symb =~ s/\?.+$//;
10615: }
10616: foreach my $id (split(/\,/,$ids)) {
10617: my ($mapid,$resid)=split(/\./,$id);
10618: if (
10619: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10620: eq $symb) {
10621: if (ref($encstate)) {
10622: $$encstate = $bighash{'encrypted_'.$id};
10623: }
10624: if (($env{'request.role.adv'}) ||
10625: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10626: ($thisurl eq '/adm/navmaps')) {
10627: $okay=1;
10628: last;
10629: }
10630: }
10631: }
10632: }
10633: untie(%bighash);
10634: }
10635: return $okay;
10636: }
10637:
10638: # --------------------------------------------------------------- Clean-up symb
10639:
10640: sub symbclean {
10641: my $symb=shift;
10642: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10643: # remove version from map
10644: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10645:
10646: # remove version from URL
10647: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10648:
10649: # remove wrapper
10650:
10651: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10652: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10653: return $symb;
10654: }
10655:
10656: # ---------------------------------------------- Split symb to find map and url
10657:
10658: sub encode_symb {
10659: my ($map,$resid,$url)=@_;
10660: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10661: }
10662:
10663: sub decode_symb {
10664: my $symb=shift;
10665: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10666: my ($map,$resid,$url)=split(/___/,$symb);
10667: return (&fixversion($map),$resid,&fixversion($url));
10668: }
10669:
10670: sub fixversion {
10671: my $fn=shift;
10672: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10673: my %bighash;
10674: my $uri=&clutter($fn);
10675: my $key=$env{'request.course.id'}.'_'.$uri;
10676: # is this cached?
10677: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10678: if (defined($cached)) { return $result; }
10679: # unfortunately not cached, or expired
10680: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10681: &GDBM_READER(),0640)) {
10682: if ($bighash{'version_'.$uri}) {
10683: my $version=$bighash{'version_'.$uri};
10684: unless (($version eq 'mostrecent') ||
10685: ($version==&getversion($uri))) {
10686: $uri=~s/\.(\w+)$/\.$version\.$1/;
10687: }
10688: }
10689: untie %bighash;
10690: }
10691: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10692: }
10693:
10694: sub deversion {
10695: my $url=shift;
10696: $url=~s/\.\d+\.(\w+)$/\.$1/;
10697: return $url;
10698: }
10699:
10700: # ------------------------------------------------------ Return symb list entry
10701:
10702: sub symbread {
10703: my ($thisfn,$donotrecurse)=@_;
10704: my $cache_str;
10705: if ($thisfn ne '') {
10706: $cache_str='request.symbread.cached.'.$thisfn;
10707: if ($env{$cache_str} ne '') {
10708: return $env{$cache_str};
10709: }
10710: } else {
10711: # no filename provided? try from environment
10712: if ($env{'request.symb'}) {
10713: return $env{$cache_str}=&symbclean($env{'request.symb'});
10714: }
10715: $thisfn=$env{'request.filename'};
10716: }
10717: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10718: # is that filename actually a symb? Verify, clean, and return
10719: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10720: if (&symbverify($thisfn,$1)) {
10721: return $env{$cache_str}=&symbclean($thisfn);
10722: }
10723: }
10724: $thisfn=declutter($thisfn);
10725: my %hash;
10726: my %bighash;
10727: my $syval='';
10728: if (($env{'request.course.fn'}) && ($thisfn)) {
10729: my $targetfn = $thisfn;
10730: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10731: $targetfn = 'adm/wrapper/'.$thisfn;
10732: }
10733: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10734: $targetfn=$1;
10735: }
10736: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10737: &GDBM_READER(),0640)) {
10738: $syval=$hash{$targetfn};
10739: untie(%hash);
10740: }
10741: # ---------------------------------------------------------- There was an entry
10742: if ($syval) {
10743: #unless ($syval=~/\_\d+$/) {
10744: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10745: #&appenv({'request.ambiguous' => $thisfn});
10746: #return $env{$cache_str}='';
10747: #}
10748: #$syval.=$1;
10749: #}
10750: } else {
10751: # ------------------------------------------------------- Was not in symb table
10752: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10753: &GDBM_READER(),0640)) {
10754: # ---------------------------------------------- Get ID(s) for current resource
10755: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10756: unless ($ids) {
10757: $ids=$bighash{'ids_/'.$thisfn};
10758: }
10759: unless ($ids) {
10760: # alias?
10761: $ids=$bighash{'mapalias_'.$thisfn};
10762: }
10763: if ($ids) {
10764: # ------------------------------------------------------------------- Has ID(s)
10765: my @possibilities=split(/\,/,$ids);
10766: if ($#possibilities==0) {
10767: # ----------------------------------------------- There is only one possibility
10768: my ($mapid,$resid)=split(/\./,$ids);
10769: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10770: $resid,$thisfn);
10771: } elsif (!$donotrecurse) {
10772: # ------------------------------------------ There is more than one possibility
10773: my $realpossible=0;
10774: foreach my $id (@possibilities) {
10775: my $file=$bighash{'src_'.$id};
10776: if (&allowed('bre',$file)) {
10777: my ($mapid,$resid)=split(/\./,$id);
10778: if ($bighash{'map_type_'.$mapid} ne 'page') {
10779: $realpossible++;
10780: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10781: $resid,$thisfn);
10782: }
10783: }
10784: }
10785: if ($realpossible!=1) { $syval=''; }
10786: } else {
10787: $syval='';
10788: }
10789: }
10790: untie(%bighash)
10791: }
10792: }
10793: if ($syval) {
10794: return $env{$cache_str}=$syval;
10795: }
10796: }
10797: &appenv({'request.ambiguous' => $thisfn});
10798: return $env{$cache_str}='';
10799: }
10800:
10801: # ---------------------------------------------------------- Return random seed
10802:
10803: sub numval {
10804: my $txt=shift;
10805: $txt=~tr/A-J/0-9/;
10806: $txt=~tr/a-j/0-9/;
10807: $txt=~tr/K-T/0-9/;
10808: $txt=~tr/k-t/0-9/;
10809: $txt=~tr/U-Z/0-5/;
10810: $txt=~tr/u-z/0-5/;
10811: $txt=~s/\D//g;
10812: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10813: return int($txt);
10814: }
10815:
10816: sub numval2 {
10817: my $txt=shift;
10818: $txt=~tr/A-J/0-9/;
10819: $txt=~tr/a-j/0-9/;
10820: $txt=~tr/K-T/0-9/;
10821: $txt=~tr/k-t/0-9/;
10822: $txt=~tr/U-Z/0-5/;
10823: $txt=~tr/u-z/0-5/;
10824: $txt=~s/\D//g;
10825: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10826: my $total;
10827: foreach my $val (@txts) { $total+=$val; }
10828: if ($_64bit) { if ($total > 2**32) { return -1; } }
10829: return int($total);
10830: }
10831:
10832: sub numval3 {
10833: use integer;
10834: my $txt=shift;
10835: $txt=~tr/A-J/0-9/;
10836: $txt=~tr/a-j/0-9/;
10837: $txt=~tr/K-T/0-9/;
10838: $txt=~tr/k-t/0-9/;
10839: $txt=~tr/U-Z/0-5/;
10840: $txt=~tr/u-z/0-5/;
10841: $txt=~s/\D//g;
10842: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10843: my $total;
10844: foreach my $val (@txts) { $total+=$val; }
10845: if ($_64bit) { $total=(($total<<32)>>32); }
10846: return $total;
10847: }
10848:
10849: sub digest {
10850: my ($data)=@_;
10851: my $digest=&Digest::MD5::md5($data);
10852: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10853: my ($e,$f);
10854: {
10855: use integer;
10856: $e=($a+$b);
10857: $f=($c+$d);
10858: if ($_64bit) {
10859: $e=(($e<<32)>>32);
10860: $f=(($f<<32)>>32);
10861: }
10862: }
10863: if (wantarray) {
10864: return ($e,$f);
10865: } else {
10866: my $g;
10867: {
10868: use integer;
10869: $g=($e+$f);
10870: if ($_64bit) {
10871: $g=(($g<<32)>>32);
10872: }
10873: }
10874: return $g;
10875: }
10876: }
10877:
10878: sub latest_rnd_algorithm_id {
10879: return '64bit5';
10880: }
10881:
10882: sub get_rand_alg {
10883: my ($courseid)=@_;
10884: if (!$courseid) { $courseid=(&whichuser())[1]; }
10885: if ($courseid) {
10886: return $env{"course.$courseid.rndseed"};
10887: }
10888: return &latest_rnd_algorithm_id();
10889: }
10890:
10891: sub validCODE {
10892: my ($CODE)=@_;
10893: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10894: return 0;
10895: }
10896:
10897: sub getCODE {
10898: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10899: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10900: defined($Apache::lonhomework::parsing_a_task) ) &&
10901: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10902: return $Apache::lonhomework::history{'resource.CODE'};
10903: }
10904: return undef;
10905: }
10906: #
10907: # Determines the random seed for a specific context:
10908: #
10909: # parameters:
10910: # symb - in course context the symb for the seed.
10911: # course_id - The course id of the form domain_coursenum.
10912: # domain - Domain for the user.
10913: # course - Course for the user.
10914: # cenv - environment of the course.
10915: #
10916: # NOTE:
10917: # All parameters are picked out of the environment if missing
10918: # or not defined.
10919: # If a symb cannot be determined the current time is used instead.
10920: #
10921: # For a given well defined symb, courside, domain, username,
10922: # and course environment, the seed is reproducible.
10923: #
10924: sub rndseed {
10925: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10926: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10927: if (!defined($symb)) {
10928: unless ($symb=$wsymb) { return time; }
10929: }
10930: if (!defined $courseid) {
10931: $courseid=$wcourseid;
10932: }
10933: if (!defined $domain) { $domain=$wdomain; }
10934: if (!defined $username) { $username=$wusername }
10935:
10936: my $which;
10937: if (defined($cenv->{'rndseed'})) {
10938: $which = $cenv->{'rndseed'};
10939: } else {
10940: $which =&get_rand_alg($courseid);
10941: }
10942: if (defined(&getCODE())) {
10943:
10944: if ($which eq '64bit5') {
10945: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10946: } elsif ($which eq '64bit4') {
10947: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10948: } else {
10949: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10950: }
10951: } elsif ($which eq '64bit5') {
10952: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10953: } elsif ($which eq '64bit4') {
10954: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10955: } elsif ($which eq '64bit3') {
10956: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10957: } elsif ($which eq '64bit2') {
10958: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10959: } elsif ($which eq '64bit') {
10960: return &rndseed_64bit($symb,$courseid,$domain,$username);
10961: }
10962: return &rndseed_32bit($symb,$courseid,$domain,$username);
10963: }
10964:
10965: sub rndseed_32bit {
10966: my ($symb,$courseid,$domain,$username)=@_;
10967: {
10968: use integer;
10969: my $symbchck=unpack("%32C*",$symb) << 27;
10970: my $symbseed=numval($symb) << 22;
10971: my $namechck=unpack("%32C*",$username) << 17;
10972: my $nameseed=numval($username) << 12;
10973: my $domainseed=unpack("%32C*",$domain) << 7;
10974: my $courseseed=unpack("%32C*",$courseid);
10975: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10976: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10977: #&logthis("rndseed :$num:$symb");
10978: if ($_64bit) { $num=(($num<<32)>>32); }
10979: return $num;
10980: }
10981: }
10982:
10983: sub rndseed_64bit {
10984: my ($symb,$courseid,$domain,$username)=@_;
10985: {
10986: use integer;
10987: my $symbchck=unpack("%32S*",$symb) << 21;
10988: my $symbseed=numval($symb) << 10;
10989: my $namechck=unpack("%32S*",$username);
10990:
10991: my $nameseed=numval($username) << 21;
10992: my $domainseed=unpack("%32S*",$domain) << 10;
10993: my $courseseed=unpack("%32S*",$courseid);
10994:
10995: my $num1=$symbchck+$symbseed+$namechck;
10996: my $num2=$nameseed+$domainseed+$courseseed;
10997: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10998: #&logthis("rndseed :$num:$symb");
10999: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11000: return "$num1,$num2";
11001: }
11002: }
11003:
11004: sub rndseed_64bit2 {
11005: my ($symb,$courseid,$domain,$username)=@_;
11006: {
11007: use integer;
11008: # strings need to be an even # of cahracters long, it it is odd the
11009: # last characters gets thrown away
11010: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11011: my $symbseed=numval($symb) << 10;
11012: my $namechck=unpack("%32S*",$username.' ');
11013:
11014: my $nameseed=numval($username) << 21;
11015: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11016: my $courseseed=unpack("%32S*",$courseid.' ');
11017:
11018: my $num1=$symbchck+$symbseed+$namechck;
11019: my $num2=$nameseed+$domainseed+$courseseed;
11020: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11021: #&logthis("rndseed :$num:$symb");
11022: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11023: return "$num1,$num2";
11024: }
11025: }
11026:
11027: sub rndseed_64bit3 {
11028: my ($symb,$courseid,$domain,$username)=@_;
11029: {
11030: use integer;
11031: # strings need to be an even # of cahracters long, it it is odd the
11032: # last characters gets thrown away
11033: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11034: my $symbseed=numval2($symb) << 10;
11035: my $namechck=unpack("%32S*",$username.' ');
11036:
11037: my $nameseed=numval2($username) << 21;
11038: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11039: my $courseseed=unpack("%32S*",$courseid.' ');
11040:
11041: my $num1=$symbchck+$symbseed+$namechck;
11042: my $num2=$nameseed+$domainseed+$courseseed;
11043: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11044: #&logthis("rndseed :$num1:$num2:$_64bit");
11045: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11046:
11047: return "$num1:$num2";
11048: }
11049: }
11050:
11051: sub rndseed_64bit4 {
11052: my ($symb,$courseid,$domain,$username)=@_;
11053: {
11054: use integer;
11055: # strings need to be an even # of cahracters long, it it is odd the
11056: # last characters gets thrown away
11057: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11058: my $symbseed=numval3($symb) << 10;
11059: my $namechck=unpack("%32S*",$username.' ');
11060:
11061: my $nameseed=numval3($username) << 21;
11062: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11063: my $courseseed=unpack("%32S*",$courseid.' ');
11064:
11065: my $num1=$symbchck+$symbseed+$namechck;
11066: my $num2=$nameseed+$domainseed+$courseseed;
11067: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11068: #&logthis("rndseed :$num1:$num2:$_64bit");
11069: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11070:
11071: return "$num1:$num2";
11072: }
11073: }
11074:
11075: sub rndseed_64bit5 {
11076: my ($symb,$courseid,$domain,$username)=@_;
11077: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11078: return "$num1:$num2";
11079: }
11080:
11081: sub rndseed_CODE_64bit {
11082: my ($symb,$courseid,$domain,$username)=@_;
11083: {
11084: use integer;
11085: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11086: my $symbseed=numval2($symb);
11087: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11088: my $CODEseed=numval(&getCODE());
11089: my $courseseed=unpack("%32S*",$courseid.' ');
11090: my $num1=$symbseed+$CODEchck;
11091: my $num2=$CODEseed+$courseseed+$symbchck;
11092: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11093: #&logthis("rndseed :$num1:$num2:$symb");
11094: if ($_64bit) { $num1=(($num1<<32)>>32); }
11095: if ($_64bit) { $num2=(($num2<<32)>>32); }
11096: return "$num1:$num2";
11097: }
11098: }
11099:
11100: sub rndseed_CODE_64bit4 {
11101: my ($symb,$courseid,$domain,$username)=@_;
11102: {
11103: use integer;
11104: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11105: my $symbseed=numval3($symb);
11106: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11107: my $CODEseed=numval3(&getCODE());
11108: my $courseseed=unpack("%32S*",$courseid.' ');
11109: my $num1=$symbseed+$CODEchck;
11110: my $num2=$CODEseed+$courseseed+$symbchck;
11111: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11112: #&logthis("rndseed :$num1:$num2:$symb");
11113: if ($_64bit) { $num1=(($num1<<32)>>32); }
11114: if ($_64bit) { $num2=(($num2<<32)>>32); }
11115: return "$num1:$num2";
11116: }
11117: }
11118:
11119: sub rndseed_CODE_64bit5 {
11120: my ($symb,$courseid,$domain,$username)=@_;
11121: my $code = &getCODE();
11122: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11123: return "$num1:$num2";
11124: }
11125:
11126: sub setup_random_from_rndseed {
11127: my ($rndseed)=@_;
11128: if ($rndseed =~/([,:])/) {
11129: my ($num1,$num2)=split(/[,:]/,$rndseed);
11130: &Math::Random::random_set_seed(abs($num1),abs($num2));
11131: } else {
11132: &Math::Random::random_set_seed_from_phrase($rndseed);
11133: }
11134: }
11135:
11136: sub latest_receipt_algorithm_id {
11137: return 'receipt3';
11138: }
11139:
11140: sub recunique {
11141: my $fucourseid=shift;
11142: my $unique;
11143: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11144: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11145: $unique=$env{"course.$fucourseid.internal.encseed"};
11146: } else {
11147: $unique=$perlvar{'lonReceipt'};
11148: }
11149: return unpack("%32C*",$unique);
11150: }
11151:
11152: sub recprefix {
11153: my $fucourseid=shift;
11154: my $prefix;
11155: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11156: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11157: $prefix=$env{"course.$fucourseid.internal.encpref"};
11158: } else {
11159: $prefix=$perlvar{'lonHostID'};
11160: }
11161: return unpack("%32C*",$prefix);
11162: }
11163:
11164: sub ireceipt {
11165: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11166:
11167: my $return =&recprefix($fucourseid).'-';
11168:
11169: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11170: $env{'request.state'} eq 'construct') {
11171: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11172: return $return;
11173: }
11174:
11175: my $cuname=unpack("%32C*",$funame);
11176: my $cudom=unpack("%32C*",$fudom);
11177: my $cucourseid=unpack("%32C*",$fucourseid);
11178: my $cusymb=unpack("%32C*",$fusymb);
11179: my $cunique=&recunique($fucourseid);
11180: my $cpart=unpack("%32S*",$part);
11181: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11182:
11183: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11184:
11185: $return.= ($cunique%$cuname+
11186: $cunique%$cudom+
11187: $cusymb%$cuname+
11188: $cusymb%$cudom+
11189: $cucourseid%$cuname+
11190: $cucourseid%$cudom+
11191: $cpart%$cuname+
11192: $cpart%$cudom);
11193: } else {
11194: $return.= ($cunique%$cuname+
11195: $cunique%$cudom+
11196: $cusymb%$cuname+
11197: $cusymb%$cudom+
11198: $cucourseid%$cuname+
11199: $cucourseid%$cudom);
11200: }
11201: return $return;
11202: }
11203:
11204: sub receipt {
11205: my ($part)=@_;
11206: my ($symb,$courseid,$domain,$name) = &whichuser();
11207: return &ireceipt($name,$domain,$courseid,$symb,$part);
11208: }
11209:
11210: sub whichuser {
11211: my ($passedsymb)=@_;
11212: my ($symb,$courseid,$domain,$name,$publicuser);
11213: if (defined($env{'form.grade_symb'})) {
11214: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11215: my $allowed=&allowed('vgr',$tmp_courseid);
11216: if (!$allowed &&
11217: exists($env{'request.course.sec'}) &&
11218: $env{'request.course.sec'} !~ /^\s*$/) {
11219: $allowed=&allowed('vgr',$tmp_courseid.
11220: '/'.$env{'request.course.sec'});
11221: }
11222: if ($allowed) {
11223: ($symb)=&get_env_multiple('form.grade_symb');
11224: $courseid=$tmp_courseid;
11225: ($domain)=&get_env_multiple('form.grade_domain');
11226: ($name)=&get_env_multiple('form.grade_username');
11227: return ($symb,$courseid,$domain,$name,$publicuser);
11228: }
11229: }
11230: if (!$passedsymb) {
11231: $symb=&symbread();
11232: } else {
11233: $symb=$passedsymb;
11234: }
11235: $courseid=$env{'request.course.id'};
11236: $domain=$env{'user.domain'};
11237: $name=$env{'user.name'};
11238: if ($name eq 'public' && $domain eq 'public') {
11239: if (!defined($env{'form.username'})) {
11240: $env{'form.username'}.=time.rand(10000000);
11241: }
11242: $name.=$env{'form.username'};
11243: }
11244: return ($symb,$courseid,$domain,$name,$publicuser);
11245:
11246: }
11247:
11248: # ------------------------------------------------------------ Serves up a file
11249: # returns either the contents of the file or
11250: # -1 if the file doesn't exist
11251: #
11252: # if the target is a file that was uploaded via DOCS,
11253: # a check will be made to see if a current copy exists on the local server,
11254: # if it does this will be served, otherwise a copy will be retrieved from
11255: # the home server for the course and stored in /home/httpd/html/userfiles on
11256: # the local server.
11257:
11258: sub getfile {
11259: my ($file) = @_;
11260: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11261: &repcopy($file);
11262: return &readfile($file);
11263: }
11264:
11265: sub repcopy_userfile {
11266: my ($file)=@_;
11267: my $londocroot = $perlvar{'lonDocRoot'};
11268: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11269: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11270: my ($cdom,$cnum,$filename) =
11271: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11272: my $uri="/uploaded/$cdom/$cnum/$filename";
11273: if (-e "$file") {
11274: # we already have a local copy, check it out
11275: my @fileinfo = stat($file);
11276: my $rtncode;
11277: my $info;
11278: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11279: if ($lwpresp ne 'ok') {
11280: # there is no such file anymore, even though we had a local copy
11281: if ($rtncode eq '404') {
11282: unlink($file);
11283: }
11284: return -1;
11285: }
11286: if ($info < $fileinfo[9]) {
11287: # nice, the file we have is up-to-date, just say okay
11288: return 'ok';
11289: } else {
11290: # the file is outdated, get rid of it
11291: unlink($file);
11292: }
11293: }
11294: # one way or the other, at this point, we don't have the file
11295: # construct the correct path for the file
11296: my @parts = ($cdom,$cnum);
11297: if ($filename =~ m|^(.+)/[^/]+$|) {
11298: push @parts, split(/\//,$1);
11299: }
11300: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11301: foreach my $part (@parts) {
11302: $path .= '/'.$part;
11303: if (!-e $path) {
11304: mkdir($path,0770);
11305: }
11306: }
11307: # now the path exists for sure
11308: # get a user agent
11309: my $ua=new LWP::UserAgent;
11310: my $transferfile=$file.'.in.transfer';
11311: # FIXME: this should flock
11312: if (-e $transferfile) { return 'ok'; }
11313: my $request;
11314: $uri=~s/^\///;
11315: my $homeserver = &homeserver($cnum,$cdom);
11316: my $protocol = $protocol{$homeserver};
11317: $protocol = 'http' if ($protocol ne 'https');
11318: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11319: my $response=$ua->request($request,$transferfile);
11320: # did it work?
11321: if ($response->is_error()) {
11322: unlink($transferfile);
11323: &logthis("Userfile repcopy failed for $uri");
11324: return -1;
11325: }
11326: # worked, rename the transfer file
11327: rename($transferfile,$file);
11328: return 'ok';
11329: }
11330:
11331: sub tokenwrapper {
11332: my $uri=shift;
11333: $uri=~s|^https?\://([^/]+)||;
11334: $uri=~s|^/||;
11335: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11336: my $token=$1;
11337: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11338: if ($udom && $uname && $file) {
11339: $file=~s|(\?\.*)*$||;
11340: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11341: my $homeserver = &homeserver($uname,$udom);
11342: my $protocol = $protocol{$homeserver};
11343: $protocol = 'http' if ($protocol ne 'https');
11344: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11345: (($uri=~/\?/)?'&':'?').'token='.$token.
11346: '&tokenissued='.$perlvar{'lonHostID'};
11347: } else {
11348: return '/adm/notfound.html';
11349: }
11350: }
11351:
11352: # call with reqtype HEAD: get last modification time
11353: # call with reqtype GET: get the file contents
11354: # Do not call this with reqtype GET for large files! It loads everything into memory
11355: #
11356: sub getuploaded {
11357: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11358: $uri=~s/^\///;
11359: my $homeserver = &homeserver($cnum,$cdom);
11360: my $protocol = $protocol{$homeserver};
11361: $protocol = 'http' if ($protocol ne 'https');
11362: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11363: my $ua=new LWP::UserAgent;
11364: my $request=new HTTP::Request($reqtype,$uri);
11365: my $response=$ua->request($request);
11366: $$rtncode = $response->code;
11367: if (! $response->is_success()) {
11368: return 'failed';
11369: }
11370: if ($reqtype eq 'HEAD') {
11371: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11372: } elsif ($reqtype eq 'GET') {
11373: $$info = $response->content;
11374: }
11375: return 'ok';
11376: }
11377:
11378: sub readfile {
11379: my $file = shift;
11380: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11381: my $fh;
11382: open($fh,"<$file");
11383: my $a='';
11384: while (my $line = <$fh>) { $a .= $line; }
11385: return $a;
11386: }
11387:
11388: sub filelocation {
11389: my ($dir,$file) = @_;
11390: my $location;
11391: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11392:
11393: if ($file =~ m-^/adm/-) {
11394: $file=~s-^/adm/wrapper/-/-;
11395: $file=~s-^/adm/coursedocs/showdoc/-/-;
11396: }
11397:
11398: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11399: $location = $file;
11400: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11401: my ($udom,$uname,$filename)=
11402: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11403: my $home=&homeserver($uname,$udom);
11404: my $is_me=0;
11405: my @ids=¤t_machine_ids();
11406: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11407: if ($is_me) {
11408: $location=propath($udom,$uname).'/userfiles/'.$filename;
11409: } else {
11410: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11411: $udom.'/'.$uname.'/'.$filename;
11412: }
11413: } elsif ($file =~ m-^/adm/-) {
11414: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11415: } else {
11416: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11417: $file=~s:^/(res|priv)/:/:;
11418: my $space=$1;
11419: if ( !( $file =~ m:^/:) ) {
11420: $location = $dir. '/'.$file;
11421: } else {
11422: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11423: }
11424: }
11425: $location=~s://+:/:g; # remove duplicate /
11426: while ($location=~m{/\.\./}) {
11427: if ($location =~ m{/[^/]+/\.\./}) {
11428: $location=~ s{/[^/]+/\.\./}{/}g;
11429: } else {
11430: $location=~ s{/\.\./}{/}g;
11431: }
11432: } #remove dir/..
11433: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11434: return $location;
11435: }
11436:
11437: sub hreflocation {
11438: my ($dir,$file)=@_;
11439: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11440: $file=filelocation($dir,$file);
11441: } elsif ($file=~m-^/adm/-) {
11442: $file=~s-^/adm/wrapper/-/-;
11443: $file=~s-^/adm/coursedocs/showdoc/-/-;
11444: }
11445: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11446: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11447: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11448: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11449: {/uploaded/$1/$2/}x;
11450: }
11451: if ($file=~ m{^/userfiles/}) {
11452: $file =~ s{^/userfiles/}{/uploaded/};
11453: }
11454: return $file;
11455: }
11456:
11457:
11458:
11459:
11460:
11461: sub current_machine_domains {
11462: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11463: }
11464:
11465: sub machine_domains {
11466: my ($hostname) = @_;
11467: my @domains;
11468: my %hostname = &all_hostnames();
11469: while( my($id, $name) = each(%hostname)) {
11470: # &logthis("-$id-$name-$hostname-");
11471: if ($hostname eq $name) {
11472: push(@domains,&host_domain($id));
11473: }
11474: }
11475: return @domains;
11476: }
11477:
11478: sub current_machine_ids {
11479: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11480: }
11481:
11482: sub machine_ids {
11483: my ($hostname) = @_;
11484: $hostname ||= &hostname($perlvar{'lonHostID'});
11485: my @ids;
11486: my %name_to_host = &all_names();
11487: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11488: return @{ $name_to_host{$hostname} };
11489: }
11490: return;
11491: }
11492:
11493: sub additional_machine_domains {
11494: my @domains;
11495: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11496: while( my $line = <$fh>) {
11497: $line =~ s/\s//g;
11498: push(@domains,$line);
11499: }
11500: return @domains;
11501: }
11502:
11503: sub default_login_domain {
11504: my $domain = $perlvar{'lonDefDomain'};
11505: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11506: foreach my $posdom (¤t_machine_domains(),
11507: &additional_machine_domains()) {
11508: if (lc($posdom) eq lc($testdomain)) {
11509: $domain=$posdom;
11510: last;
11511: }
11512: }
11513: return $domain;
11514: }
11515:
11516: # ------------------------------------------------------------- Declutters URLs
11517:
11518: sub declutter {
11519: my $thisfn=shift;
11520: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11521: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11522: $thisfn=~s/^\///;
11523: $thisfn=~s|^adm/wrapper/||;
11524: $thisfn=~s|^adm/coursedocs/showdoc/||;
11525: $thisfn=~s/^res\///;
11526: $thisfn=~s/^priv\///;
11527: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11528: $thisfn=~s/\?.+$//;
11529: }
11530: return $thisfn;
11531: }
11532:
11533: # ------------------------------------------------------------- Clutter up URLs
11534:
11535: sub clutter {
11536: my $thisfn='/'.&declutter(shift);
11537: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11538: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11539: $thisfn='/res'.$thisfn;
11540: }
11541: if ($thisfn !~m|^/adm|) {
11542: if ($thisfn =~ m|^/ext/|) {
11543: $thisfn='/adm/wrapper'.$thisfn;
11544: } else {
11545: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11546: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11547: if ($embstyle eq 'ssi'
11548: || ($embstyle eq 'hdn')
11549: || ($embstyle eq 'rat')
11550: || ($embstyle eq 'prv')
11551: || ($embstyle eq 'ign')) {
11552: #do nothing with these
11553: } elsif (($embstyle eq 'img')
11554: || ($embstyle eq 'emb')
11555: || ($embstyle eq 'wrp')) {
11556: $thisfn='/adm/wrapper'.$thisfn;
11557: } elsif ($embstyle eq 'unk'
11558: && $thisfn!~/\.(sequence|page)$/) {
11559: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11560: } else {
11561: # &logthis("Got a blank emb style");
11562: }
11563: }
11564: }
11565: return $thisfn;
11566: }
11567:
11568: sub clutter_with_no_wrapper {
11569: my $uri = &clutter(shift);
11570: if ($uri =~ m-^/adm/-) {
11571: $uri =~ s-^/adm/wrapper/-/-;
11572: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11573: }
11574: return $uri;
11575: }
11576:
11577: sub freeze_escape {
11578: my ($value)=@_;
11579: if (ref($value)) {
11580: $value=&nfreeze($value);
11581: return '__FROZEN__'.&escape($value);
11582: }
11583: return &escape($value);
11584: }
11585:
11586:
11587: sub thaw_unescape {
11588: my ($value)=@_;
11589: if ($value =~ /^__FROZEN__/) {
11590: substr($value,0,10,undef);
11591: $value=&unescape($value);
11592: return &thaw($value);
11593: }
11594: return &unescape($value);
11595: }
11596:
11597: sub correct_line_ends {
11598: my ($result)=@_;
11599: $$result =~s/\r\n/\n/mg;
11600: $$result =~s/\r/\n/mg;
11601: }
11602: # ================================================================ Main Program
11603:
11604: sub goodbye {
11605: &logthis("Starting Shut down");
11606: #not converted to using infrastruture and probably shouldn't be
11607: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11608: #converted
11609: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11610: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11611: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11612: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11613: #1.1 only
11614: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11615: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11616: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11617: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11618: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11619: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11620: &logthis(sprintf("%-20s is %s",'hits',$hits));
11621: &flushcourselogs();
11622: &logthis("Shutting down");
11623: }
11624:
11625: sub get_dns {
11626: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
11627: if (!$ignore_cache) {
11628: my ($content,$cached)=
11629: &Apache::lonnet::is_cached_new('dns',$url);
11630: if ($cached) {
11631: &$func($content,$hashref);
11632: return;
11633: }
11634: }
11635:
11636: my %alldns;
11637: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11638: foreach my $dns (<$config>) {
11639: next if ($dns !~ /^\^(\S*)/x);
11640: my $line = $1;
11641: my ($host,$protocol) = split(/:/,$line);
11642: if ($protocol ne 'https') {
11643: $protocol = 'http';
11644: }
11645: $alldns{$host} = $protocol;
11646: }
11647: while (%alldns) {
11648: my ($dns) = keys(%alldns);
11649: my $ua=new LWP::UserAgent;
11650: $ua->timeout(30);
11651: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11652: my $response=$ua->request($request);
11653: delete($alldns{$dns});
11654: next if ($response->is_error());
11655: my @content = split("\n",$response->content);
11656: unless ($nocache) {
11657: &do_cache_new('dns',$url,\@content,30*24*60*60);
11658: }
11659: &$func(\@content,$hashref);
11660: return;
11661: }
11662: close($config);
11663: my $which = (split('/',$url))[3];
11664: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11665: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11666: my @content = <$config>;
11667: &$func(\@content,$hashref);
11668: return;
11669: }
11670:
11671: # ------------------------------------------------------Get DNS checksums file
11672: sub parse_dns_checksums_tab {
11673: my ($lines,$hashref) = @_;
11674: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
11675: my $loncaparev = &get_server_loncaparev($machine_dom);
11676: my ($release,$timestamp) = split(/\-/,$loncaparev);
11677: my (%chksum,%revnum);
11678: if (ref($lines) eq 'ARRAY') {
11679: chomp(@{$lines});
11680: my $versions = shift(@{$lines});
11681: my %supported;
11682: if ($versions =~ /^VERSIONS\:([\w\.\,]+)$/) {
11683: my $releaseslist = $1;
11684: if ($releaseslist =~ /,/) {
11685: map { $supported{$_} = 1; } split(/,/,$releaseslist);
11686: } elsif ($releaseslist) {
11687: $supported{$releaseslist} = 1;
11688: }
11689: }
11690: if ($supported{$release}) {
11691: my $matchthis = 0;
11692: foreach my $line (@{$lines}) {
11693: if ($line =~ /^(\d[\w\.]+)$/) {
11694: if ($matchthis) {
11695: last;
11696: } elsif ($1 eq $release) {
11697: $matchthis = 1;
11698: }
11699: } elsif ($matchthis) {
11700: my ($file,$version,$shasum) = split(/,/,$line);
11701: $chksum{$file} = $shasum;
11702: $revnum{$file} = $version;
11703: }
11704: }
11705: if (ref($hashref) eq 'HASH') {
11706: %{$hashref} = (
11707: sums => \%chksum,
11708: versions => \%revnum,
11709: );
11710: }
11711: }
11712: }
11713: return;
11714: }
11715:
11716: sub fetch_dns_checksums {
11717: my %checksums;
11718: &get_dns('/adm/dns/checksums',\&parse_dns_checksums_tab,1,1,
11719: \%checksums);
11720: return \%checksums;
11721: }
11722:
11723: # ------------------------------------------------------------ Read domain file
11724: {
11725: my $loaded;
11726: my %domain;
11727:
11728: sub parse_domain_tab {
11729: my ($lines) = @_;
11730: foreach my $line (@$lines) {
11731: next if ($line =~ /^(\#|\s*$ )/x);
11732:
11733: chomp($line);
11734: my ($name,@elements) = split(/:/,$line,9);
11735: my %this_domain;
11736: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11737: 'lang_def', 'city', 'longi', 'lati',
11738: 'primary') {
11739: $this_domain{$field} = shift(@elements);
11740: }
11741: $domain{$name} = \%this_domain;
11742: }
11743: }
11744:
11745: sub reset_domain_info {
11746: undef($loaded);
11747: undef(%domain);
11748: }
11749:
11750: sub load_domain_tab {
11751: my ($ignore_cache) = @_;
11752: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11753: my $fh;
11754: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11755: my @lines = <$fh>;
11756: &parse_domain_tab(\@lines);
11757: }
11758: close($fh);
11759: $loaded = 1;
11760: }
11761:
11762: sub domain {
11763: &load_domain_tab() if (!$loaded);
11764:
11765: my ($name,$what) = @_;
11766: return if ( !exists($domain{$name}) );
11767:
11768: if (!$what) {
11769: return $domain{$name}{'description'};
11770: }
11771: return $domain{$name}{$what};
11772: }
11773:
11774: sub domain_info {
11775: &load_domain_tab() if (!$loaded);
11776: return %domain;
11777: }
11778:
11779: }
11780:
11781:
11782: # ------------------------------------------------------------- Read hosts file
11783: {
11784: my %hostname;
11785: my %hostdom;
11786: my %libserv;
11787: my $loaded;
11788: my %name_to_host;
11789: my %internetdom;
11790: my %LC_dns_serv;
11791:
11792: sub parse_hosts_tab {
11793: my ($file) = @_;
11794: foreach my $configline (@$file) {
11795: next if ($configline =~ /^(\#|\s*$ )/x);
11796: chomp($configline);
11797: if ($configline =~ /^\^/) {
11798: if ($configline =~ /^\^([\w.\-]+)/) {
11799: $LC_dns_serv{$1} = 1;
11800: }
11801: next;
11802: }
11803: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11804: $name=~s/\s//g;
11805: if ($id && $domain && $role && $name) {
11806: $hostname{$id}=$name;
11807: push(@{$name_to_host{$name}}, $id);
11808: $hostdom{$id}=$domain;
11809: if ($role eq 'library') { $libserv{$id}=$name; }
11810: if (defined($protocol)) {
11811: if ($protocol eq 'https') {
11812: $protocol{$id} = $protocol;
11813: } else {
11814: $protocol{$id} = 'http';
11815: }
11816: } else {
11817: $protocol{$id} = 'http';
11818: }
11819: if (defined($intdom)) {
11820: $internetdom{$id} = $intdom;
11821: }
11822: }
11823: }
11824: }
11825:
11826: sub reset_hosts_info {
11827: &purge_remembered();
11828: &reset_domain_info();
11829: &reset_hosts_ip_info();
11830: undef(%name_to_host);
11831: undef(%hostname);
11832: undef(%hostdom);
11833: undef(%libserv);
11834: undef($loaded);
11835: }
11836:
11837: sub load_hosts_tab {
11838: my ($ignore_cache) = @_;
11839: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11840: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11841: my @config = <$config>;
11842: &parse_hosts_tab(\@config);
11843: close($config);
11844: $loaded=1;
11845: }
11846:
11847: sub hostname {
11848: &load_hosts_tab() if (!$loaded);
11849:
11850: my ($lonid) = @_;
11851: return $hostname{$lonid};
11852: }
11853:
11854: sub all_hostnames {
11855: &load_hosts_tab() if (!$loaded);
11856:
11857: return %hostname;
11858: }
11859:
11860: sub all_names {
11861: &load_hosts_tab() if (!$loaded);
11862:
11863: return %name_to_host;
11864: }
11865:
11866: sub all_host_domain {
11867: &load_hosts_tab() if (!$loaded);
11868: return %hostdom;
11869: }
11870:
11871: sub is_library {
11872: &load_hosts_tab() if (!$loaded);
11873:
11874: return exists($libserv{$_[0]});
11875: }
11876:
11877: sub all_library {
11878: &load_hosts_tab() if (!$loaded);
11879:
11880: return %libserv;
11881: }
11882:
11883: sub unique_library {
11884: #2x reverse removes all hostnames that appear more than once
11885: my %unique = reverse &all_library();
11886: return reverse %unique;
11887: }
11888:
11889: sub get_servers {
11890: &load_hosts_tab() if (!$loaded);
11891:
11892: my ($domain,$type) = @_;
11893: my %possible_hosts = ($type eq 'library') ? %libserv
11894: : %hostname;
11895: my %result;
11896: if (ref($domain) eq 'ARRAY') {
11897: while ( my ($host,$hostname) = each(%possible_hosts)) {
11898: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11899: $result{$host} = $hostname;
11900: }
11901: }
11902: } else {
11903: while ( my ($host,$hostname) = each(%possible_hosts)) {
11904: if ($hostdom{$host} eq $domain) {
11905: $result{$host} = $hostname;
11906: }
11907: }
11908: }
11909: return %result;
11910: }
11911:
11912: sub get_unique_servers {
11913: my %unique = reverse &get_servers(@_);
11914: return reverse %unique;
11915: }
11916:
11917: sub host_domain {
11918: &load_hosts_tab() if (!$loaded);
11919:
11920: my ($lonid) = @_;
11921: return $hostdom{$lonid};
11922: }
11923:
11924: sub all_domains {
11925: &load_hosts_tab() if (!$loaded);
11926:
11927: my %seen;
11928: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11929: return @uniq;
11930: }
11931:
11932: sub internet_dom {
11933: &load_hosts_tab() if (!$loaded);
11934:
11935: my ($lonid) = @_;
11936: return $internetdom{$lonid};
11937: }
11938:
11939: sub is_LC_dns {
11940: &load_hosts_tab() if (!$loaded);
11941:
11942: my ($hostname) = @_;
11943: return exists($LC_dns_serv{$hostname});
11944: }
11945:
11946: }
11947:
11948: {
11949: my %iphost;
11950: my %name_to_ip;
11951: my %lonid_to_ip;
11952:
11953: sub get_hosts_from_ip {
11954: my ($ip) = @_;
11955: my %iphosts = &get_iphost();
11956: if (ref($iphosts{$ip})) {
11957: return @{$iphosts{$ip}};
11958: }
11959: return;
11960: }
11961:
11962: sub reset_hosts_ip_info {
11963: undef(%iphost);
11964: undef(%name_to_ip);
11965: undef(%lonid_to_ip);
11966: }
11967:
11968: sub get_host_ip {
11969: my ($lonid) = @_;
11970: if (exists($lonid_to_ip{$lonid})) {
11971: return $lonid_to_ip{$lonid};
11972: }
11973: my $name=&hostname($lonid);
11974: my $ip = gethostbyname($name);
11975: return if (!$ip || length($ip) ne 4);
11976: $ip=inet_ntoa($ip);
11977: $name_to_ip{$name} = $ip;
11978: $lonid_to_ip{$lonid} = $ip;
11979: return $ip;
11980: }
11981:
11982: sub get_iphost {
11983: my ($ignore_cache) = @_;
11984:
11985: if (!$ignore_cache) {
11986: if (%iphost) {
11987: return %iphost;
11988: }
11989: my ($ip_info,$cached)=
11990: &Apache::lonnet::is_cached_new('iphost','iphost');
11991: if ($cached) {
11992: %iphost = %{$ip_info->[0]};
11993: %name_to_ip = %{$ip_info->[1]};
11994: %lonid_to_ip = %{$ip_info->[2]};
11995: return %iphost;
11996: }
11997: }
11998:
11999: # get yesterday's info for fallback
12000: my %old_name_to_ip;
12001: my ($ip_info,$cached)=
12002: &Apache::lonnet::is_cached_new('iphost','iphost');
12003: if ($cached) {
12004: %old_name_to_ip = %{$ip_info->[1]};
12005: }
12006:
12007: my %name_to_host = &all_names();
12008: foreach my $name (keys(%name_to_host)) {
12009: my $ip;
12010: if (!exists($name_to_ip{$name})) {
12011: $ip = gethostbyname($name);
12012: if (!$ip || length($ip) ne 4) {
12013: if (defined($old_name_to_ip{$name})) {
12014: $ip = $old_name_to_ip{$name};
12015: &logthis("Can't find $name defaulting to old $ip");
12016: } else {
12017: &logthis("Name $name no IP found");
12018: next;
12019: }
12020: } else {
12021: $ip=inet_ntoa($ip);
12022: }
12023: $name_to_ip{$name} = $ip;
12024: } else {
12025: $ip = $name_to_ip{$name};
12026: }
12027: foreach my $id (@{ $name_to_host{$name} }) {
12028: $lonid_to_ip{$id} = $ip;
12029: }
12030: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12031: }
12032: &do_cache_new('iphost','iphost',
12033: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12034: 48*60*60);
12035:
12036: return %iphost;
12037: }
12038:
12039: #
12040: # Given a DNS returns the loncapa host name for that DNS
12041: #
12042: sub host_from_dns {
12043: my ($dns) = @_;
12044: my @hosts;
12045: my $ip;
12046:
12047: if (exists($name_to_ip{$dns})) {
12048: $ip = $name_to_ip{$dns};
12049: }
12050: if (!$ip) {
12051: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12052: if (length($ip) == 4) {
12053: $ip = &IO::Socket::inet_ntoa($ip);
12054: }
12055: }
12056: if ($ip) {
12057: @hosts = get_hosts_from_ip($ip);
12058: return $hosts[0];
12059: }
12060: return undef;
12061: }
12062:
12063: sub get_internet_names {
12064: my ($lonid) = @_;
12065: return if ($lonid eq '');
12066: my ($idnref,$cached)=
12067: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12068: if ($cached) {
12069: return $idnref;
12070: }
12071: my $ip = &get_host_ip($lonid);
12072: my @hosts = &get_hosts_from_ip($ip);
12073: my %iphost = &get_iphost();
12074: my (@idns,%seen);
12075: foreach my $id (@hosts) {
12076: my $dom = &host_domain($id);
12077: my $prim_id = &domain($dom,'primary');
12078: my $prim_ip = &get_host_ip($prim_id);
12079: next if ($seen{$prim_ip});
12080: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12081: foreach my $id (@{$iphost{$prim_ip}}) {
12082: my $intdom = &internet_dom($id);
12083: unless (grep(/^\Q$intdom\E$/,@idns)) {
12084: push(@idns,$intdom);
12085: }
12086: }
12087: }
12088: $seen{$prim_ip} = 1;
12089: }
12090: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12091: }
12092:
12093: }
12094:
12095: sub all_loncaparevs {
12096: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
12097: }
12098:
12099: # ---------------------------------------------------------- Read loncaparev table
12100: {
12101: sub load_loncaparevs {
12102: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12103: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12104: while (my $configline=<$config>) {
12105: chomp($configline);
12106: my ($hostid,$loncaparev)=split(/:/,$configline);
12107: $loncaparevs{$hostid}=$loncaparev;
12108: }
12109: close($config);
12110: }
12111: }
12112: }
12113: }
12114:
12115: # ---------------------------------------------------------- Read serverhostID table
12116: {
12117: sub load_serverhomeIDs {
12118: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12119: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12120: while (my $configline=<$config>) {
12121: chomp($configline);
12122: my ($name,$id)=split(/:/,$configline);
12123: $serverhomeIDs{$name}=$id;
12124: }
12125: close($config);
12126: }
12127: }
12128: }
12129: }
12130:
12131:
12132: BEGIN {
12133:
12134: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12135: unless ($readit) {
12136: {
12137: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12138: %perlvar = (%perlvar,%{$configvars});
12139: }
12140:
12141:
12142: # ------------------------------------------------------ Read spare server file
12143: {
12144: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12145:
12146: while (my $configline=<$config>) {
12147: chomp($configline);
12148: if ($configline) {
12149: my ($host,$type) = split(':',$configline,2);
12150: if (!defined($type) || $type eq '') { $type = 'default' };
12151: push(@{ $spareid{$type} }, $host);
12152: }
12153: }
12154: close($config);
12155: }
12156: # ------------------------------------------------------------ Read permissions
12157: {
12158: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12159:
12160: while (my $configline=<$config>) {
12161: chomp($configline);
12162: if ($configline) {
12163: my ($role,$perm)=split(/ /,$configline);
12164: if ($perm ne '') { $pr{$role}=$perm; }
12165: }
12166: }
12167: close($config);
12168: }
12169:
12170: # -------------------------------------------- Read plain texts for permissions
12171: {
12172: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12173:
12174: while (my $configline=<$config>) {
12175: chomp($configline);
12176: if ($configline) {
12177: my ($short,@plain)=split(/:/,$configline);
12178: %{$prp{$short}} = ();
12179: if (@plain > 0) {
12180: $prp{$short}{'std'} = $plain[0];
12181: for (my $i=1; $i<@plain; $i++) {
12182: $prp{$short}{'alt'.$i} = $plain[$i];
12183: }
12184: }
12185: }
12186: }
12187: close($config);
12188: }
12189:
12190: # ---------------------------------------------------------- Read package table
12191: {
12192: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12193:
12194: while (my $configline=<$config>) {
12195: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12196: chomp($configline);
12197: my ($short,$plain)=split(/:/,$configline);
12198: my ($pack,$name)=split(/\&/,$short);
12199: if ($plain ne '') {
12200: $packagetab{$pack.'&'.$name.'&name'}=$name;
12201: $packagetab{$short}=$plain;
12202: }
12203: }
12204: close($config);
12205: }
12206:
12207: # ---------------------------------------------------------- Read loncaparev table
12208:
12209: &load_loncaparevs();
12210:
12211: # ---------------------------------------------------------- Read serverhostID table
12212:
12213: &load_serverhomeIDs();
12214:
12215: # ---------------------------------------------------------- Read releaseslist XML
12216: {
12217: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12218: if (-e $file) {
12219: my $parser = HTML::LCParser->new($file);
12220: while (my $token = $parser->get_token()) {
12221: if ($token->[0] eq 'S') {
12222: my $item = $token->[1];
12223: my $name = $token->[2]{'name'};
12224: my $value = $token->[2]{'value'};
12225: if ($item ne '' && $name ne '' && $value ne '') {
12226: my $release = $parser->get_text();
12227: $release =~ s/(^\s*|\s*$ )//gx;
12228: $needsrelease{$item.':'.$name.':'.$value} = $release;
12229: }
12230: }
12231: }
12232: }
12233: }
12234:
12235: # ---------------------------------------------------------- Read managers table
12236: {
12237: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12238: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12239: while (my $configline=<$config>) {
12240: chomp($configline);
12241: next if ($configline =~ /^\#/);
12242: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12243: $managerstab{$configline} = 1;
12244: }
12245: }
12246: close($config);
12247: }
12248: }
12249: }
12250:
12251: # ------------- set up temporary directory
12252: {
12253: $tmpdir = LONCAPA::tempdir();
12254:
12255: }
12256:
12257: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12258: 'compress_threshold'=> 20_000,
12259: });
12260:
12261: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12262: $dumpcount=0;
12263: $locknum=0;
12264:
12265: &logtouch();
12266: &logthis('<font color="yellow">INFO: Read configuration</font>');
12267: $readit=1;
12268: {
12269: use integer;
12270: my $test=(2**32)+1;
12271: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12272: &logthis(" Detected 64bit platform ($_64bit)");
12273: }
12274:
12275: {
12276: eval {
12277: ($apache) =
12278: (Apache2::ServerUtil::get_server_version() =~ m{Apache/(\d+\.\d+)});
12279: };
12280: if ($@) {
12281: $apache = 1.3;
12282: }
12283: }
12284:
12285: }
12286: }
12287:
12288: 1;
12289: __END__
12290:
12291: =pod
12292:
12293: =head1 NAME
12294:
12295: Apache::lonnet - Subroutines to ask questions about things in the network.
12296:
12297: =head1 SYNOPSIS
12298:
12299: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12300:
12301: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12302:
12303: Common parameters:
12304:
12305: =over 4
12306:
12307: =item *
12308:
12309: $uname : an internal username (if $cname expecting a course Id specifically)
12310:
12311: =item *
12312:
12313: $udom : a domain (if $cdom expecting a course's domain specifically)
12314:
12315: =item *
12316:
12317: $symb : a resource instance identifier
12318:
12319: =item *
12320:
12321: $namespace : the name of a .db file that contains the data needed or
12322: being set.
12323:
12324: =back
12325:
12326: =head1 OVERVIEW
12327:
12328: lonnet provides subroutines which interact with the
12329: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12330: about classes, users, and resources.
12331:
12332: For many of these objects you can also use this to store data about
12333: them or modify them in various ways.
12334:
12335: =head2 Symbs
12336:
12337: To identify a specific instance of a resource, LON-CAPA uses symbols
12338: or "symbs"X<symb>. These identifiers are built from the URL of the
12339: map, the resource number of the resource in the map, and the URL of
12340: the resource itself. The latter is somewhat redundant, but might help
12341: if maps change.
12342:
12343: An example is
12344:
12345: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12346:
12347: The respective map entry is
12348:
12349: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12350: title="Problem 2">
12351: </resource>
12352:
12353: Symbs are used by the random number generator, as well as to store and
12354: restore data specific to a certain instance of for example a problem.
12355:
12356: =head2 Storing And Retrieving Data
12357:
12358: X<store()>X<cstore()>X<restore()>Three of the most important functions
12359: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12360: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12361: is is the non-critical message twin of cstore. These functions are for
12362: handlers to store a perl hash to a user's permanent data space in an
12363: easy manner, and to retrieve it again on another call. It is expected
12364: that a handler would use this once at the beginning to retrieve data,
12365: and then again once at the end to send only the new data back.
12366:
12367: The data is stored in the user's data directory on the user's
12368: homeserver under the ID of the course.
12369:
12370: The hash that is returned by restore will have all of the previous
12371: value for all of the elements of the hash.
12372:
12373: Example:
12374:
12375: #creating a hash
12376: my %hash;
12377: $hash{'foo'}='bar';
12378:
12379: #storing it
12380: &Apache::lonnet::cstore(\%hash);
12381:
12382: #changing a value
12383: $hash{'foo'}='notbar';
12384:
12385: #adding a new value
12386: $hash{'bar'}='foo';
12387: &Apache::lonnet::cstore(\%hash);
12388:
12389: #retrieving the hash
12390: my %history=&Apache::lonnet::restore();
12391:
12392: #print the hash
12393: foreach my $key (sort(keys(%history))) {
12394: print("\%history{$key} = $history{$key}");
12395: }
12396:
12397: Will print out:
12398:
12399: %history{1:foo} = bar
12400: %history{1:keys} = foo:timestamp
12401: %history{1:timestamp} = 990455579
12402: %history{2:bar} = foo
12403: %history{2:foo} = notbar
12404: %history{2:keys} = foo:bar:timestamp
12405: %history{2:timestamp} = 990455580
12406: %history{bar} = foo
12407: %history{foo} = notbar
12408: %history{timestamp} = 990455580
12409: %history{version} = 2
12410:
12411: Note that the special hash entries C<keys>, C<version> and
12412: C<timestamp> were added to the hash. C<version> will be equal to the
12413: total number of versions of the data that have been stored. The
12414: C<timestamp> attribute will be the UNIX time the hash was
12415: stored. C<keys> is available in every historical section to list which
12416: keys were added or changed at a specific historical revision of a
12417: hash.
12418:
12419: B<Warning>: do not store the hash that restore returns directly. This
12420: will cause a mess since it will restore the historical keys as if the
12421: were new keys. I.E. 1:foo will become 1:1:foo etc.
12422:
12423: Calling convention:
12424:
12425: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
12426: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname);
12427:
12428: For more detailed information, see lonnet specific documentation.
12429:
12430: =head1 RETURN MESSAGES
12431:
12432: =over 4
12433:
12434: =item * B<con_lost>: unable to contact remote host
12435:
12436: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12437: when the connection is brought back up
12438:
12439: =item * B<con_failed>: unable to contact remote host and unable to save message
12440: for later delivery
12441:
12442: =item * B<error:>: an error a occurred, a description of the error follows the :
12443:
12444: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12445: that was requested
12446:
12447: =back
12448:
12449: =head1 PUBLIC SUBROUTINES
12450:
12451: =head2 Session Environment Functions
12452:
12453: =over 4
12454:
12455: =item *
12456: X<appenv()>
12457: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12458: the user envirnoment file, and will be restored for each access this
12459: user makes during this session, also modifies the %env for the current
12460: process. Optional rolesarrayref - if defined contains a reference to an array
12461: of roles which are exempt from the restriction on modifying user.role entries
12462: in the user's environment.db and in %env.
12463:
12464: =item *
12465: X<delenv()>
12466: B<delenv($delthis,$regexp)>: removes all items from the session
12467: environment file that begin with $delthis. If the
12468: optional second arg - $regexp - is true, $delthis is treated as a
12469: regular expression, otherwise \Q$delthis\E is used.
12470: The values are also deleted from the current processes %env.
12471:
12472: =item * get_env_multiple($name)
12473:
12474: gets $name from the %env hash, it seemlessly handles the cases where multiple
12475: values may be defined and end up as an array ref.
12476:
12477: returns an array of values
12478:
12479: =back
12480:
12481: =head2 User Information
12482:
12483: =over 4
12484:
12485: =item *
12486: X<queryauthenticate()>
12487: B<queryauthenticate($uname,$udom)>: try to determine user's current
12488: authentication scheme
12489:
12490: =item *
12491: X<authenticate()>
12492: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12493: authenticate user from domain's lib servers (first use the current
12494: one). C<$upass> should be the users password.
12495: $checkdefauth is optional (value is 1 if a check should be made to
12496: authenticate user using default authentication method, and allow
12497: account creation if username does not have account in the domain).
12498: $clientcancheckhost is optional (value is 1 if checking whether the
12499: server can host will occur on the client side in lonauth.pm).
12500:
12501: =item *
12502: X<homeserver()>
12503: B<homeserver($uname,$udom)>: find the server which has
12504: the user's directory and files (there must be only one), this caches
12505: the answer, and also caches if there is a borken connection.
12506:
12507: =item *
12508: X<idget()>
12509: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12510: (IDs are a unique resource in a domain, there must be only 1 ID per
12511: username, and only 1 username per ID in a specific domain) (returns
12512: hash: id=>name,id=>name)
12513:
12514: =item *
12515: X<idrget()>
12516: B<idrget($udom,@unames)>: find the IDs behind a list of
12517: usernames (returns hash: name=>id,name=>id)
12518:
12519: =item *
12520: X<idput()>
12521: B<idput($udom,%ids)>: store away a list of names and associated IDs
12522:
12523: =item *
12524: X<rolesinit()>
12525: B<rolesinit($udom,$username)>: get user privileges.
12526: returns user role, first access and timer interval hashes
12527:
12528: =item *
12529: X<privileged()>
12530: B<privileged($username,$domain)>: returns a true if user has a
12531: privileged and active role (i.e. su or dc), false otherwise.
12532:
12533: =item *
12534: X<getsection()>
12535: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12536: course $cname, return section name/number or '' for "not in course"
12537: and '-1' for "no section"
12538:
12539: =item *
12540: X<userenvironment()>
12541: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12542: passed in @what from the requested user's environment, returns a hash
12543:
12544: =item *
12545: X<userlog_query()>
12546: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12547: activity.log file. %filters defines filters applied when parsing the
12548: log file. These can be start or end timestamps, or the type of action
12549: - log to look for Login or Logout events, check for Checkin or
12550: Checkout, role for role selection. The response is in the form
12551: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12552: escaped strings of the action recorded in the activity.log file.
12553:
12554: =back
12555:
12556: =head2 User Roles
12557:
12558: =over 4
12559:
12560: =item *
12561:
12562: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12563: F: full access
12564: U,I,K: authentication modes (cxx only)
12565: '': forbidden
12566: 1: user needs to choose course
12567: 2: browse allowed
12568: A: passphrase authentication needed
12569:
12570: =item *
12571:
12572: constructaccess($url,$setpriv) : check for access to construction space URL
12573:
12574: See if the owner domain and name in the URL match those in the
12575: expected environment. If so, return three element list
12576: ($ownername,$ownerdomain,$ownerhome).
12577:
12578: Otherwise return the null string.
12579:
12580: If second argument 'setpriv' is true, it assigns the privileges,
12581: and returns the same three element list, unless the owner has
12582: blocked "ad hoc" Domain Coordinator access to the Author Space,
12583: in which case the null string is returned.
12584:
12585: =item *
12586:
12587: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12588: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12589: and course level
12590:
12591: =item *
12592:
12593: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12594: (rolesplain.tab); plain text explanation of a user role term.
12595: $type is Course (default) or Community.
12596: If $forcedefault evaluates to true, text returned will be default
12597: text for $type. Otherwise, if this is a course, the text returned
12598: will be a custom name for the role (if defined in the course's
12599: environment). If no custom name is defined the default is returned.
12600:
12601: =item *
12602:
12603: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
12604: All arguments are optional. Returns a hash of a roles, either for
12605: co-author/assistant author roles for a user's Construction Space
12606: (default), or if $context is 'userroles', roles for the user himself,
12607: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12608: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12609: For each key, value is set to colon-separated start and end times for
12610: the role. If no username and domain are specified, will default to
12611: current user/domain. Types, roles, and roledoms are references to arrays
12612: of role statuses (active, future or previous), roles
12613: (e.g., cc,in, st etc.) and domains of the roles which can be used
12614: to restrict the list of roles reported. If no array ref is
12615: provided for types, will default to return only active roles.
12616:
12617: =item *
12618:
12619: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12620: user: $uname:$udom has a role in the course: $cdom_$cnum.
12621:
12622: Additional optional arguments are: $type (if role checking is to be restricted
12623: to certain user status types -- previous (expired roles), active (currently
12624: available roles) or future (roles available in the future), and
12625: $hideprivileged -- if true will not report course roles for users who
12626: have active Domain Coordinator role in course's domain or in additional
12627: domains (specified in 'Domains to check for privileged users' in course
12628: environment -- set via: Course Settings -> Classlists and staff listing).
12629:
12630: =item *
12631:
12632: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
12633: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
12634: $possdomains and $possroles are optional array refs -- to domains to check and
12635: roles to check. If $possdomains is not specified, a dump will be done of the
12636: users' roles.db to check for a dc or su role in any domain. This can be
12637: time consuming if &privileged is called repeatedly (e.g., when displaying a
12638: classlist), so in such cases, supplying a $possdomains array is preferred, as
12639: this then allows &privileged_by_domain() to be used, which caches the identity
12640: of privileged users, eliminating the need for repeated calls to &dump().
12641:
12642: =item *
12643:
12644: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
12645: where the outer hash keys are domains specified in the $possdomains array ref,
12646: next inner hash keys are privileged roles specified in the $roles array ref,
12647: and the innermost hash contains key = value pairs for username:domain = end:start
12648: for active or future "privileged" users with that role in that domain. To avoid
12649: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
12650: innerhash are cached using priv_$role and $dom as the identifiers.
12651:
12652: =back
12653:
12654: =head2 User Modification
12655:
12656: =over 4
12657:
12658: =item *
12659:
12660: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12661: user for the level given by URL. Optional start and end dates (leave empty
12662: string or zero for "no date")
12663:
12664: =item *
12665:
12666: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12667: change a users, password, possible return values are: ok,
12668: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12669: refused
12670:
12671: =item *
12672:
12673: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12674:
12675: =item *
12676:
12677: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12678: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12679:
12680: will update user information (firstname,middlename,lastname,generation,
12681: permanentemail), and if forceid is true, student/employee ID also.
12682: A user's institutional affiliation(s) can also be updated.
12683: User information fields will not be overwritten with empty entries
12684: unless the field is included in the $candelete array reference.
12685: This array is included when a single user is modified via "Manage Users",
12686: or when Autoupdate.pl is run by cron in a domain.
12687:
12688: =item *
12689:
12690: modifystudent
12691:
12692: modify a student's enrollment and identification information.
12693: The course id is resolved based on the current users environment.
12694: This means the envoking user must be a course coordinator or otherwise
12695: associated with a course.
12696:
12697: This call is essentially a wrapper for lonnet::modifyuser and
12698: lonnet::modify_student_enrollment
12699:
12700: Inputs:
12701:
12702: =over 4
12703:
12704: =item B<$udom> Student's loncapa domain
12705:
12706: =item B<$uname> Student's loncapa login name
12707:
12708: =item B<$uid> Student/Employee ID
12709:
12710: =item B<$umode> Student's authentication mode
12711:
12712: =item B<$upass> Student's password
12713:
12714: =item B<$first> Student's first name
12715:
12716: =item B<$middle> Student's middle name
12717:
12718: =item B<$last> Student's last name
12719:
12720: =item B<$gene> Student's generation
12721:
12722: =item B<$usec> Student's section in course
12723:
12724: =item B<$end> Unix time of the roles expiration
12725:
12726: =item B<$start> Unix time of the roles start date
12727:
12728: =item B<$forceid> If defined, allow $uid to be changed
12729:
12730: =item B<$desiredhome> server to use as home server for student
12731:
12732: =item B<$email> Student's permanent e-mail address
12733:
12734: =item B<$type> Type of enrollment (auto or manual)
12735:
12736: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12737:
12738: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12739:
12740: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12741:
12742: =item B<$context> role change context (shown in User Management Logs display in a course)
12743:
12744: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12745:
12746: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
12747:
12748: =back
12749:
12750: =item *
12751:
12752: modify_student_enrollment
12753:
12754: Change a students enrollment status in a class. The environment variable
12755: 'role.request.course' must be defined for this function to proceed.
12756:
12757: Inputs:
12758:
12759: =over 4
12760:
12761: =item $udom, students domain
12762:
12763: =item $uname, students name
12764:
12765: =item $uid, students user id
12766:
12767: =item $first, students first name
12768:
12769: =item $middle
12770:
12771: =item $last
12772:
12773: =item $gene
12774:
12775: =item $usec
12776:
12777: =item $end
12778:
12779: =item $start
12780:
12781: =item $type
12782:
12783: =item $locktype
12784:
12785: =item $cid
12786:
12787: =item $selfenroll
12788:
12789: =item $context
12790:
12791: =item $credits, number of credits student will earn from this class
12792:
12793: =back
12794:
12795:
12796: =item *
12797:
12798: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12799: custom role; give a custom role to a user for the level given by URL. Specify
12800: name and domain of role author, and role name
12801:
12802: =item *
12803:
12804: revokerole($udom,$uname,$url,$role) : revoke a role for url
12805:
12806: =item *
12807:
12808: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12809:
12810: =back
12811:
12812: =head2 Course Infomation
12813:
12814: =over 4
12815:
12816: =item *
12817:
12818: coursedescription($courseid,$options) : returns a hash of information about the
12819: specified course id, including all environment settings for the
12820: course, the description of the course will be in the hash under the
12821: key 'description'
12822:
12823: $options is an optional parameter that if supplied is a hash reference that controls
12824: what how this function works. It has the following key/values:
12825:
12826: =over 4
12827:
12828: =item freshen_cache
12829:
12830: If defined, and the environment cache for the course is valid, it is
12831: returned in the returned hash.
12832:
12833: =item one_time
12834:
12835: If defined, the last cache time is set to _now_
12836:
12837: =item user
12838:
12839: If defined, the supplied username is used instead of the current user.
12840:
12841:
12842: =back
12843:
12844: =item *
12845:
12846: resdata($name,$domain,$type,@which) : request for current parameter
12847: setting for a specific $type, where $type is either 'course' or 'user',
12848: @what should be a list of parameters to ask about. This routine caches
12849: answers for 5 minutes.
12850:
12851: =item *
12852:
12853: get_courseresdata($courseid, $domain) : dump the entire course resource
12854: data base, returning a hash that is keyed by the resource name and has
12855: values that are the resource value. I believe that the timestamps and
12856: versions are also returned.
12857:
12858: =back
12859:
12860: =head2 Course Modification
12861:
12862: =over 4
12863:
12864: =item *
12865:
12866: writecoursepref($courseid,%prefs) : write preferences (environment
12867: database) for a course
12868:
12869: =item *
12870:
12871: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12872:
12873: =item *
12874:
12875: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12876:
12877: =item *
12878:
12879: is_course($courseid), is_course($cdom, $cnum)
12880:
12881: Accepts either a combined $courseid (in the form of domain_courseid) or the
12882: two component version $cdom, $cnum. It checks if the specified course exists.
12883:
12884: Returns:
12885: undef if the course doesn't exist, otherwise
12886: in scalar context the combined courseid.
12887: in list context the two components of the course identifier, domain and
12888: courseid.
12889:
12890: =back
12891:
12892: =head2 Resource Subroutines
12893:
12894: =over 4
12895:
12896: =item *
12897:
12898: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12899:
12900: =item *
12901:
12902: repcopy($filename) : subscribes to the requested file, and attempts to
12903: replicate from the owning library server, Might return
12904: 'unavailable', 'not_found', 'forbidden', 'ok', or
12905: 'bad_request', also attempts to grab the metadata for the
12906: resource. Expects the local filesystem pathname
12907: (/home/httpd/html/res/....)
12908:
12909: =back
12910:
12911: =head2 Resource Information
12912:
12913: =over 4
12914:
12915: =item *
12916:
12917: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
12918: and returns the value of a variety of different possible values,
12919: $varname should be a request string, and the other parameters can be
12920: used to specify who and what one is asking about. Ordinarily, $cid
12921: does not need to be specified, as it is retrived from
12922: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
12923: within lonuserstate::loadmap() when initializing a course, before
12924: $env{'request.course.id'} has been set, so it needs to be provided
12925: in that one case.
12926:
12927: Possible values for $varname are environment.lastname (or other item
12928: from the envirnment hash), user.name (or someother aspect about the
12929: user), resource.0.maxtries (or some other part and parameter of a
12930: resource)
12931:
12932: =item *
12933:
12934: directcondval($number) : get current value of a condition; reads from a state
12935: string
12936:
12937: =item *
12938:
12939: condval($condidx) : value of condition index based on state
12940:
12941: =item *
12942:
12943: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12944: resource's metadata, $what should be either a specific key, or either
12945: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12946: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12947:
12948: this function automatically caches all requests
12949:
12950: =item *
12951:
12952: metadata_query($query,$custom,$customshow) : make a metadata query against the
12953: network of library servers; returns file handle of where SQL and regex results
12954: will be stored for query
12955:
12956: =item *
12957:
12958: symbread($filename) : return symbolic list entry (filename argument optional);
12959: returns the data handle
12960:
12961: =item *
12962:
12963: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12964: and is a possible symb for the URL in $thisfn, and if is an encrypted
12965: resource that the user accessed using /enc/ returns a 1 on success, 0
12966: on failure, user must be in a course, as it assumes the existence of
12967: the course initial hash, and uses $env('request.course.id'}. The third
12968: arg is an optional reference to a scalar. If this arg is passed in the
12969: call to symbverify, it will be set to 1 if the symb has been set to be
12970: encrypted; otherwise it will be null.
12971:
12972: =item *
12973:
12974: symbclean($symb) : removes versions numbers from a symb, returns the
12975: cleaned symb
12976:
12977: =item *
12978:
12979: is_on_map($uri) : checks if the $uri is somewhere on the current
12980: course map, user must be in a course for it to work.
12981:
12982: =item *
12983:
12984: numval($salt) : return random seed value (addend for rndseed)
12985:
12986: =item *
12987:
12988: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12989: a random seed, all arguments are optional, if they aren't sent it uses the
12990: environment to derive them. Note: if symb isn't sent and it can't get one
12991: from &symbread it will use the current time as its return value
12992:
12993: =item *
12994:
12995: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12996: unfakeable, receipt
12997:
12998: =item *
12999:
13000: receipt() : API to ireceipt working off of env values; given out to users
13001:
13002: =item *
13003:
13004: countacc($url) : count the number of accesses to a given URL
13005:
13006: =item *
13007:
13008: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13009:
13010: =item *
13011:
13012: checkin($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 $tcrsid)
13013:
13014: =item *
13015:
13016: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13017:
13018: =item *
13019:
13020: devalidate($symb) : devalidate temporary spreadsheet calculations,
13021: forcing spreadsheet to reevaluate the resource scores next time.
13022:
13023: =item *
13024:
13025: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13026: when viewing in course context.
13027:
13028: input: six args -- filename (decluttered), course number, course domain,
13029: url, symb (if registered) and group (if this is a
13030: group item -- e.g., bulletin board, group page etc.).
13031:
13032: output: array of five scalars --
13033: $cfile -- url for file editing if editable on current server
13034: $home -- homeserver of resource (i.e., for author if published,
13035: or course if uploaded.).
13036: $switchserver -- 1 if server switch will be needed.
13037: $forceedit -- 1 if icon/link should be to go to edit mode
13038: $forceview -- 1 if icon/link should be to go to view mode
13039:
13040: =item *
13041:
13042: is_course_upload($file,$cnum,$cdom)
13043:
13044: Used in course context to determine if current file was uploaded to
13045: the course (i.e., would be found in /userfiles/docs on the course's
13046: homeserver.
13047:
13048: input: 3 args -- filename (decluttered), course number and course domain.
13049: output: boolean -- 1 if file was uploaded.
13050:
13051: =back
13052:
13053: =head2 Storing/Retreiving Data
13054:
13055: =over 4
13056:
13057: =item *
13058:
13059: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
13060: for this url; hashref needs to be given and should be a \%hashname; the
13061: remaining args aren't required and if they aren't passed or are '' they will
13062: be derived from the env
13063:
13064: =item *
13065:
13066: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
13067: uses critical subroutine
13068:
13069: =item *
13070:
13071: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
13072: all args are optional
13073:
13074: =item *
13075:
13076: dumpstore($namespace,$udom,$uname,$regexp,$range) :
13077: dumps the complete (or key matching regexp) namespace into a hash
13078: ($udom, $uname, $regexp, $range are optional) for a namespace that is
13079: normally &store()ed into
13080:
13081: $range should be either an integer '100' (give me the first 100
13082: matching records)
13083: or be two integers sperated by a - with no spaces
13084: '30-50' (give me the 30th through the 50th matching
13085: records)
13086:
13087:
13088: =item *
13089:
13090: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
13091: replaces a &store() version of data with a replacement set of data
13092: for a particular resource in a namespace passed in the $storehash hash
13093: reference
13094:
13095: =item *
13096:
13097: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13098: works very similar to store/cstore, but all data is stored in a
13099: temporary location and can be reset using tmpreset, $storehash should
13100: be a hash reference, returns nothing on success
13101:
13102: =item *
13103:
13104: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13105: similar to restore, but all data is stored in a temporary location and
13106: can be reset using tmpreset. Returns a hash of values on success,
13107: error string otherwise.
13108:
13109: =item *
13110:
13111: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13112: deltes all keys for $symb form the temporary storage hash.
13113:
13114: =item *
13115:
13116: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13117: reference filled in from namesp ($udom and $uname are optional)
13118:
13119: =item *
13120:
13121: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13122: namesp ($udom and $uname are optional)
13123:
13124: =item *
13125:
13126: dump($namespace,$udom,$uname,$regexp,$range) :
13127: dumps the complete (or key matching regexp) namespace into a hash
13128: ($udom, $uname, $regexp, $range are optional)
13129:
13130: $range should be either an integer '100' (give me the first 100
13131: matching records)
13132: or be two integers sperated by a - with no spaces
13133: '30-50' (give me the 30th through the 50th matching
13134: records)
13135: =item *
13136:
13137: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13138: $store can be a scalar, an array reference, or if the amount to be
13139: incremented is > 1, a hash reference.
13140:
13141: ($udom and $uname are optional)
13142:
13143: =item *
13144:
13145: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13146: ($udom and $uname are optional)
13147:
13148: =item *
13149:
13150: cput($namespace,$storehash,$udom,$uname) : critical put
13151: ($udom and $uname are optional)
13152:
13153: =item *
13154:
13155: newput($namespace,$storehash,$udom,$uname) :
13156:
13157: Attempts to store the items in the $storehash, but only if they don't
13158: currently exist, if this succeeds you can be certain that you have
13159: successfully created a new key value pair in the $namespace db.
13160:
13161:
13162: Args:
13163: $namespace: name of database to store values to
13164: $storehash: hashref to store to the db
13165: $udom: (optional) domain of user containing the db
13166: $uname: (optional) name of user caontaining the db
13167:
13168: Returns:
13169: 'ok' -> succeeded in storing all keys of $storehash
13170: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13171: least <key> already existed in the db (other
13172: requested keys may also already exist)
13173: 'error: <msg>' -> unable to tie the DB or other error occurred
13174: 'con_lost' -> unable to contact request server
13175: 'refused' -> action was not allowed by remote machine
13176:
13177:
13178: =item *
13179:
13180: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13181: reference filled in from namesp (encrypts the return communication)
13182: ($udom and $uname are optional)
13183:
13184: =item *
13185:
13186: log($udom,$name,$home,$message) : write to permanent log for user; use
13187: critical subroutine
13188:
13189: =item *
13190:
13191: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13192: array reference filled in from namespace found in domain level on either
13193: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13194:
13195: =item *
13196:
13197: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13198: domain level either on specified domain server ($uhome) or primary domain
13199: server ($udom and $uhome are optional)
13200:
13201: =item *
13202:
13203: get_domain_defaults($target_domain) : returns hash with defaults for
13204: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
13205: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
13206: or localauth), initial password or a kerberos realm, language (e.g., en-us).
13207: Values are retrieved from cache (if current), or from domain's configuration.db
13208: (if available), or lastly from values in lonTabs/dns_domain,tab,
13209: or lonTabs/domain.tab.
13210:
13211: %domdefaults = &get_auth_defaults($target_domain);
13212:
13213: =back
13214:
13215: =head2 Network Status Functions
13216:
13217: =over 4
13218:
13219: =item *
13220:
13221: dirlist() : return directory list based on URI (first arg).
13222:
13223: Inputs: 1 required, 5 optional.
13224:
13225: =over
13226:
13227: =item
13228: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13229:
13230: =item
13231: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13232:
13233: =item
13234: $username - username of user/course to be listed. Extracted from $uri if absent.
13235:
13236: =item
13237: $getpropath - boolean: 1 if prepend path using &propath().
13238:
13239: =item
13240: $getuserdir - boolean: 1 if prepend path for "userfiles".
13241:
13242: =item
13243: $alternateRoot - path to prepend in place of path from $uri.
13244:
13245: =back
13246:
13247: Returns: Array of up to two items.
13248:
13249: =over
13250:
13251: a reference to an array of files/subdirectories
13252:
13253: =over
13254:
13255: Each element in the array of files/subdirectories is a & separated list of
13256: item name and the result of running stat on the item. If dirlist was requested
13257: for a file instead of a directory, the item name will be ''. For a directory
13258: listing, if the item is a metadata file, the element will end &N&M
13259: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13260: default copyright set (1).
13261:
13262: =back
13263:
13264: a scalar containing error condition (if encountered).
13265:
13266: =over
13267:
13268: =item
13269: no_host (no homeserver identified for $username:$domain).
13270:
13271: =item
13272: no_such_host (server contacted for listing not identified as valid host).
13273:
13274: =item
13275: con_lost (connection to remote server failed).
13276:
13277: =item
13278: refused (invalid $username:$domain received on lond side).
13279:
13280: =item
13281: no_such_dir (directory at specified path on lond side does not exist).
13282:
13283: =item
13284: empty (directory at specified path on lond side is empty).
13285:
13286: =over
13287:
13288: This is currently not encountered because the &ls3, &ls2,
13289: &ls (_handler) routines on the lond side do not filter out
13290: . and .. from a directory listing.
13291:
13292: =back
13293:
13294: =back
13295:
13296: =back
13297:
13298: =item *
13299:
13300: spareserver() : find server with least workload from spare.tab
13301:
13302:
13303: =item *
13304:
13305: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13306: if there is no corresponding loncapa host.
13307:
13308: =back
13309:
13310:
13311: =head2 Apache Request
13312:
13313: =over 4
13314:
13315: =item *
13316:
13317: ssi($url,%hash) : server side include, does a complete request cycle on url to
13318: localhost, posts hash
13319:
13320: =back
13321:
13322: =head2 Data to String to Data
13323:
13324: =over 4
13325:
13326: =item *
13327:
13328: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13329: and '&' separators, supports elements that are arrayrefs and hashrefs
13330:
13331: =item *
13332:
13333: hashref2str($hashref) : convert a hashref into a string complete with
13334: escaping and '=' and '&' separators, supports elements that are
13335: arrayrefs and hashrefs
13336:
13337: =item *
13338:
13339: arrayref2str($arrayref) : convert an arrayref into a string complete
13340: with escaping and '&' separators, supports elements that are arrayrefs
13341: and hashrefs
13342:
13343: =item *
13344:
13345: str2hash($string) : convert string to hash using unescaping and
13346: splitting on '=' and '&', supports elements that are arrayrefs and
13347: hashrefs
13348:
13349: =item *
13350:
13351: str2array($string) : convert string to hash using unescaping and
13352: splitting on '&', supports elements that are arrayrefs and hashrefs
13353:
13354: =back
13355:
13356: =head2 Logging Routines
13357:
13358:
13359: These routines allow one to make log messages in the lonnet.log and
13360: lonnet.perm logfiles.
13361:
13362: =over 4
13363:
13364: =item *
13365:
13366: logtouch() : make sure the logfile, lonnet.log, exists
13367:
13368: =item *
13369:
13370: logthis() : append message to the normal lonnet.log file, it gets
13371: preiodically rolled over and deleted.
13372:
13373: =item *
13374:
13375: logperm() : append a permanent message to lonnet.perm.log, this log
13376: file never gets deleted by any automated portion of the system, only
13377: messages of critical importance should go in here.
13378:
13379:
13380: =back
13381:
13382: =head2 General File Helper Routines
13383:
13384: =over 4
13385:
13386: =item *
13387:
13388: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13389: (a) files in /uploaded
13390: (i) If a local copy of the file exists -
13391: compares modification date of local copy with last-modified date for
13392: definitive version stored on home server for course. If local copy is
13393: stale, requests a new version from the home server and stores it.
13394: If the original has been removed from the home server, then local copy
13395: is unlinked.
13396: (ii) If local copy does not exist -
13397: requests the file from the home server and stores it.
13398:
13399: If $caller is 'uploadrep':
13400: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13401: for request for files originally uploaded via DOCS.
13402: - returns 'ok' if fresh local copy now available, -1 otherwise.
13403:
13404: Otherwise:
13405: This indicates a call from the content generation phase of the request.
13406: - returns the entire contents of the file or -1.
13407:
13408: (b) files in /res
13409: - returns the entire contents of a file or -1;
13410: it properly subscribes to and replicates the file if neccessary.
13411:
13412:
13413: =item *
13414:
13415: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13416: reference
13417:
13418: returns either a stat() list of data about the file or an empty list
13419: if the file doesn't exist or couldn't find out about it (connection
13420: problems or user unknown)
13421:
13422: =item *
13423:
13424: filelocation($dir,$file) : returns file system location of a file
13425: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13426: directory that relative $file lookups are to looked in ($dir of /a/dir
13427: and a file of ../bob will become /a/bob)
13428:
13429: =item *
13430:
13431: hreflocation($dir,$file) : returns file system location or a URL; same as
13432: filelocation except for hrefs
13433:
13434: =item *
13435:
13436: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
13437:
13438: =back
13439:
13440: =head2 Usererfile file routines (/uploaded*)
13441:
13442: =over 4
13443:
13444: =item *
13445:
13446: userfileupload(): main rotine for putting a file in a user or course's
13447: filespace, arguments are,
13448:
13449: formname - required - this is the name of the element in $env where the
13450: filename, and the contents of the file to create/modifed exist
13451: the filename is in $env{'form.'.$formname.'.filename'} and the
13452: contents of the file is located in $env{'form.'.$formname}
13453: context - if coursedoc, store the file in the course of the active role
13454: of the current user;
13455: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13456: if 'canceloverwrite': delete file in tmp/overwrites directory
13457: subdir - required - subdirectory to put the file in under ../userfiles/
13458: if undefined, it will be placed in "unknown"
13459:
13460: (This routine calls clean_filename() to remove any dangerous
13461: characters from the filename, and then calls finuserfileupload() to
13462: complete the transaction)
13463:
13464: returns either the url of the uploaded file (/uploaded/....) if successful
13465: and /adm/notfound.html if unsuccessful
13466:
13467: =item *
13468:
13469: clean_filename(): routine for cleaing a filename up for storage in
13470: userfile space, argument is:
13471:
13472: filename - proposed filename
13473:
13474: returns: the new clean filename
13475:
13476: =item *
13477:
13478: finishuserfileupload(): routine that creates and sends the file to
13479: userspace, probably shouldn't be called directly
13480:
13481: docuname: username or courseid of destination for the file
13482: docudom: domain of user/course of destination for the file
13483: formname: same as for userfileupload()
13484: fname: filename (including subdirectories) for the file
13485: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13486: allfiles: reference to hash used to store objects found by parser
13487: codebase: reference to hash used for codebases of java objects found by parser
13488: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13489: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13490: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13491: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13492: context: if 'overwrite', will move the uploaded file from its temporary location to
13493: userfiles to facilitate overwriting a previously uploaded file with same name.
13494: mimetype: reference to scalar to accommodate mime type determined
13495: from File::MMagic if $parser = parse.
13496:
13497: returns either the url of the uploaded file (/uploaded/....) if successful
13498: and /adm/notfound.html if unsuccessful (or an error message if context
13499: was 'overwrite').
13500:
13501:
13502: =item *
13503:
13504: renameuserfile(): renames an existing userfile to a new name
13505:
13506: Args:
13507: docuname: username or courseid of destination for the file
13508: docudom: domain of user/course of destination for the file
13509: old: current file name (including any subdirs under userfiles)
13510: new: desired file name (including any subdirs under userfiles)
13511:
13512: =item *
13513:
13514: mkdiruserfile(): creates a directory is a userfiles dir
13515:
13516: Args:
13517: docuname: username or courseid of destination for the file
13518: docudom: domain of user/course of destination for the file
13519: dir: dir to create (including any subdirs under userfiles)
13520:
13521: =item *
13522:
13523: removeuserfile(): removes a file that exists in userfiles
13524:
13525: Args:
13526: docuname: username or courseid of destination for the file
13527: docudom: domain of user/course of destination for the file
13528: fname: filname to delete (including any subdirs under userfiles)
13529:
13530: =item *
13531:
13532: removeuploadedurl(): convience function for removeuserfile()
13533:
13534: Args:
13535: url: a full /uploaded/... url to delete
13536:
13537: =item *
13538:
13539: get_portfile_permissions():
13540: Args:
13541: domain: domain of user or course contain the portfolio files
13542: user: name of user or num of course contain the portfolio files
13543: Returns:
13544: hashref of a dump of the proper file_permissions.db
13545:
13546:
13547: =item *
13548:
13549: get_access_controls():
13550:
13551: Args:
13552: current_permissions: the hash ref returned from get_portfile_permissions()
13553: group: (optional) the group you want the files associated with
13554: file: (optional) the file you want access info on
13555:
13556: Returns:
13557: a hash (keys are file names) of hashes containing
13558: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13559: values are XML containing access control settings (see below)
13560:
13561: Internal notes:
13562:
13563: access controls are stored in file_permissions.db as key=value pairs.
13564: key -> path to file/file_name\0uniqueID:scope_end_start
13565: where scope -> public,guest,course,group,domains or users.
13566: end -> UNIX time for end of access (0 -> no end date)
13567: start -> UNIX time for start of access
13568:
13569: value -> XML description of access control
13570: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13571: <start></start>
13572: <end></end>
13573:
13574: <password></password> for scope type = guest
13575:
13576: <domain></domain> for scope type = course or group
13577: <number></number>
13578: <roles id="">
13579: <role></role>
13580: <access></access>
13581: <section></section>
13582: <group></group>
13583: </roles>
13584:
13585: <dom></dom> for scope type = domains
13586:
13587: <users> for scope type = users
13588: <user>
13589: <uname></uname>
13590: <udom></udom>
13591: </user>
13592: </users>
13593: </scope>
13594:
13595: Access data is also aggregated for each file in an additional key=value pair:
13596: key -> path to file/file_name\0accesscontrol
13597: value -> reference to hash
13598: hash contains key = value pairs
13599: where key = uniqueID:scope_end_start
13600: value = UNIX time record was last updated
13601:
13602: Used to improve speed of look-ups of access controls for each file.
13603:
13604: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13605:
13606: =item *
13607:
13608: modify_access_controls():
13609:
13610: Modifies access controls for a portfolio file
13611: Args
13612: 1. file name
13613: 2. reference to hash of required changes,
13614: 3. domain
13615: 4. username
13616: where domain,username are the domain of the portfolio owner
13617: (either a user or a course)
13618:
13619: Returns:
13620: 1. result of additions or updates ('ok' or 'error', with error message).
13621: 2. result of deletions ('ok' or 'error', with error message).
13622: 3. reference to hash of any new or updated access controls.
13623: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13624: key = integer (inbound ID)
13625: value = uniqueID
13626:
13627: =item *
13628:
13629: get_timebased_id():
13630:
13631: Attempts to get a unique timestamp-based suffix for use with items added to a
13632: course via the Course Editor (e.g., folders, composite pages,
13633: group bulletin boards).
13634:
13635: Args: (first three required; six others optional)
13636:
13637: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
13638: docssequence, or name of group
13639:
13640: 2. keyid (alphanumeric): name of temporary locking key in hash,
13641: e.g., num, boardids
13642:
13643: 3. namespace: name of gdbm file used to store suffixes already assigned;
13644: file will be named nohist_namespace.db
13645:
13646: 4. cdom: domain of course; default is current course domain from %env
13647:
13648: 5. cnum: course number; default is current course number from %env
13649:
13650: 6. idtype: set to concat if an additional digit is to be appended to the
13651: unix timestamp to form the suffix, if the plain timestamp is already
13652: in use. Default is to not do this, but simply increment the unix
13653: timestamp by 1 until a unique key is obtained.
13654:
13655: 7. who: holder of locking key; defaults to user:domain for user.
13656:
13657: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
13658: retrying); default is 3.
13659:
13660: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
13661:
13662: Returns:
13663:
13664: 1. suffix obtained (numeric)
13665:
13666: 2. result of deleting locking key (ok if deleted, or lock never obtained)
13667:
13668: 3. error: contains (localized) error message if an error occurred.
13669:
13670:
13671: =back
13672:
13673: =head2 HTTP Helper Routines
13674:
13675: =over 4
13676:
13677: =item *
13678:
13679: escape() : unpack non-word characters into CGI-compatible hex codes
13680:
13681: =item *
13682:
13683: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13684:
13685: =back
13686:
13687: =head1 PRIVATE SUBROUTINES
13688:
13689: =head2 Underlying communication routines (Shouldn't call)
13690:
13691: =over 4
13692:
13693: =item *
13694:
13695: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13696:
13697: =item *
13698:
13699: reply() : uses subreply to send a message to remote machine, logs all failures
13700:
13701: =item *
13702:
13703: critical() : passes a critical message to another server; if cannot
13704: get through then place message in connection buffer directory and
13705: returns con_delayed, if incapable of saving message, returns
13706: con_failed
13707:
13708: =item *
13709:
13710: reconlonc() : tries to reconnect lonc client processes.
13711:
13712: =back
13713:
13714: =head2 Resource Access Logging
13715:
13716: =over 4
13717:
13718: =item *
13719:
13720: flushcourselogs() : flush (save) buffer logs and access logs
13721:
13722: =item *
13723:
13724: courselog($what) : save message for course in hash
13725:
13726: =item *
13727:
13728: courseacclog($what) : save message for course using &courselog(). Perform
13729: special processing for specific resource types (problems, exams, quizzes, etc).
13730:
13731: =item *
13732:
13733: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13734: as a PerlChildExitHandler
13735:
13736: =back
13737:
13738: =head2 Other
13739:
13740: =over 4
13741:
13742: =item *
13743:
13744: symblist($mapname,%newhash) : update symbolic storage links
13745:
13746: =back
13747:
13748: =cut
13749:
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