File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.1195:
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Fri Nov 9 17:27:18 2012 UTC (11 years, 8 months ago) by
raeburn
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CVS tags:
HEAD
- Consistent Interface for templated pages (bug 6128).
- Make functions for Templated "About Me" page visible.
- Additional arg for lonnet::in_course() -- $hideprivileged
- if true, exclude DC + SU users, unless overridden in course environment.
- perldoc (lonnet.pm): &in_course(), &can_edit_resource(), &is_course_upload()
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1195 2012/11/09 17:27:18 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
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$name,$id) = @_;
360: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
361: return $response;
362: }
363:
364: # -------------------------------------------------- Non-critical communication
365: sub subreply {
366: my ($cmd,$server)=@_;
367: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
368: #
369: # With loncnew process trimming, there's a timing hole between lonc server
370: # process exit and the master server picking up the listen on the AF_UNIX
371: # socket. In that time interval, a lock file will exist:
372:
373: my $lockfile=$peerfile.".lock";
374: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
375: sleep(1);
376: }
377: # At this point, either a loncnew parent is listening or an old lonc
378: # or loncnew child is listening so we can connect or everything's dead.
379: #
380: # We'll give the connection a few tries before abandoning it. If
381: # connection is not possible, we'll con_lost back to the client.
382: #
383: my $client;
384: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
385: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
386: Type => SOCK_STREAM,
387: Timeout => 10);
388: if ($client) {
389: last; # Connected!
390: } else {
391: &create_connection(&hostname($server),$server);
392: }
393: sleep(1); # Try again later if failed connection.
394: }
395: my $answer;
396: if ($client) {
397: print $client "sethost:$server:$cmd\n";
398: $answer=<$client>;
399: if (!$answer) { $answer="con_lost"; }
400: chomp($answer);
401: } else {
402: $answer = 'con_lost'; # Failed connection.
403: }
404: return $answer;
405: }
406:
407: sub reply {
408: my ($cmd,$server)=@_;
409: unless (defined(&hostname($server))) { return 'no_such_host'; }
410: my $answer=subreply($cmd,$server);
411: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
412: &logthis("<font color=\"blue\">WARNING:".
413: " $cmd to $server returned $answer</font>");
414: }
415: return $answer;
416: }
417:
418: # ----------------------------------------------------------- Send USR1 to lonc
419:
420: sub reconlonc {
421: my ($lonid) = @_;
422: my $hostname = &hostname($lonid);
423: if ($lonid) {
424: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
425: if ($hostname && -e $peerfile) {
426: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
427: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
428: Type => SOCK_STREAM,
429: Timeout => 10);
430: if ($client) {
431: print $client ("reset_retries\n");
432: my $answer=<$client>;
433: #reset just this one.
434: }
435: }
436: return;
437: }
438:
439: &logthis("Trying to reconnect lonc");
440: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
441: if (open(my $fh,"<$loncfile")) {
442: my $loncpid=<$fh>;
443: chomp($loncpid);
444: if (kill 0 => $loncpid) {
445: &logthis("lonc at pid $loncpid responding, sending USR1");
446: kill USR1 => $loncpid;
447: sleep 1;
448: } else {
449: &logthis(
450: "<font color=\"blue\">WARNING:".
451: " lonc at pid $loncpid not responding, giving up</font>");
452: }
453: } else {
454: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
455: }
456: }
457:
458: # ------------------------------------------------------ Critical communication
459:
460: sub critical {
461: my ($cmd,$server)=@_;
462: unless (&hostname($server)) {
463: &logthis("<font color=\"blue\">WARNING:".
464: " Critical message to unknown server ($server)</font>");
465: return 'no_such_host';
466: }
467: my $answer=reply($cmd,$server);
468: if ($answer eq 'con_lost') {
469: &reconlonc("$perlvar{'lonSockDir'}/$server");
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: my $now=time;
473: my $middlename=$cmd;
474: $middlename=substr($middlename,0,16);
475: $middlename=~s/\W//g;
476: my $dfilename=
477: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
478: $dumpcount++;
479: {
480: my $dfh;
481: if (open($dfh,">$dfilename")) {
482: print $dfh "$cmd\n";
483: close($dfh);
484: }
485: }
486: sleep 2;
487: my $wcmd='';
488: {
489: my $dfh;
490: if (open($dfh,"<$dfilename")) {
491: $wcmd=<$dfh>;
492: close($dfh);
493: }
494: }
495: chomp($wcmd);
496: if ($wcmd eq $cmd) {
497: &logthis("<font color=\"blue\">WARNING: ".
498: "Connection buffer $dfilename: $cmd</font>");
499: &logperm("D:$server:$cmd");
500: return 'con_delayed';
501: } else {
502: &logthis("<font color=\"red\">CRITICAL:"
503: ." Critical connection failed: $server $cmd</font>");
504: &logperm("F:$server:$cmd");
505: return 'con_failed';
506: }
507: }
508: }
509: return $answer;
510: }
511:
512: # ------------------------------------------- check if return value is an error
513:
514: sub error {
515: my ($result) = @_;
516: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
517: if ($2 == 2) { return undef; }
518: return $1;
519: }
520: return undef;
521: }
522:
523: sub convert_and_load_session_env {
524: my ($lonidsdir,$handle)=@_;
525: my @profile;
526: {
527: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
528: if (!$opened) {
529: return 0;
530: }
531: flock($idf,LOCK_SH);
532: @profile=<$idf>;
533: close($idf);
534: }
535: my %temp_env;
536: foreach my $line (@profile) {
537: if ($line !~ m/=/) {
538: return 0;
539: }
540: chomp($line);
541: my ($envname,$envvalue)=split(/=/,$line,2);
542: $temp_env{&unescape($envname)} = &unescape($envvalue);
543: }
544: unlink("$lonidsdir/$handle.id");
545: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
546: 0640)) {
547: %disk_env = %temp_env;
548: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
549: untie(%disk_env);
550: }
551: return 1;
552: }
553:
554: # ------------------------------------------- Transfer profile into environment
555: my $env_loaded;
556: sub transfer_profile_to_env {
557: my ($lonidsdir,$handle,$force_transfer) = @_;
558: if (!$force_transfer && $env_loaded) { return; }
559:
560: if (!defined($lonidsdir)) {
561: $lonidsdir = $perlvar{'lonIDsDir'};
562: }
563: if (!defined($handle)) {
564: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
565: }
566:
567: my $convert;
568: {
569: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
570: if (!$opened) {
571: return;
572: }
573: flock($idf,LOCK_SH);
574: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
575: &GDBM_READER(),0640)) {
576: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
577: untie(%disk_env);
578: } else {
579: $convert = 1;
580: }
581: }
582: if ($convert) {
583: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
584: &logthis("Failed to load session, or convert session.");
585: }
586: }
587:
588: my %remove;
589: while ( my $envname = each(%env) ) {
590: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
591: if ($time < time-300) {
592: $remove{$key}++;
593: }
594: }
595: }
596:
597: $env{'user.environment'} = "$lonidsdir/$handle.id";
598: $env_loaded=1;
599: foreach my $expired_key (keys(%remove)) {
600: &delenv($expired_key);
601: }
602: }
603:
604: # ---------------------------------------------------- Check for valid session
605: sub check_for_valid_session {
606: my ($r,$name) = @_;
607: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
608: if ($name eq '') {
609: $name = 'lonID';
610: }
611: my $lonid=$cookies{$name};
612: return undef if (!$lonid);
613:
614: my $handle=&LONCAPA::clean_handle($lonid->value);
615: my $lonidsdir;
616: if ($name eq 'lonDAV') {
617: $lonidsdir=$r->dir_config('lonDAVsessDir');
618: } else {
619: $lonidsdir=$r->dir_config('lonIDsDir');
620: }
621: return undef if (!-e "$lonidsdir/$handle.id");
622:
623: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
624: return undef if (!$opened);
625:
626: flock($idf,LOCK_SH);
627: my %disk_env;
628: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
629: &GDBM_READER(),0640)) {
630: return undef;
631: }
632:
633: if (!defined($disk_env{'user.name'})
634: || !defined($disk_env{'user.domain'})) {
635: return undef;
636: }
637: return $handle;
638: }
639:
640: sub timed_flock {
641: my ($file,$lock_type) = @_;
642: my $failed=0;
643: eval {
644: local $SIG{__DIE__}='DEFAULT';
645: local $SIG{ALRM}=sub {
646: $failed=1;
647: die("failed lock");
648: };
649: alarm(13);
650: flock($file,$lock_type);
651: alarm(0);
652: };
653: if ($failed) {
654: return undef;
655: } else {
656: return 1;
657: }
658: }
659:
660: # ---------------------------------------------------------- Append Environment
661:
662: sub appenv {
663: my ($newenv,$roles) = @_;
664: if (ref($newenv) eq 'HASH') {
665: foreach my $key (keys(%{$newenv})) {
666: my $refused = 0;
667: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
668: $refused = 1;
669: if (ref($roles) eq 'ARRAY') {
670: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
671: if (grep(/^\Q$role\E$/,@{$roles})) {
672: $refused = 0;
673: }
674: }
675: }
676: if ($refused) {
677: &logthis("<font color=\"blue\">WARNING: ".
678: "Attempt to modify environment ".$key." to ".$newenv->{$key}
679: .'</font>');
680: delete($newenv->{$key});
681: } else {
682: $env{$key}=$newenv->{$key};
683: }
684: }
685: my $opened = open(my $env_file,'+<',$env{'user.environment'});
686: if ($opened
687: && &timed_flock($env_file,LOCK_EX)
688: &&
689: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
690: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
691: while (my ($key,$value) = each(%{$newenv})) {
692: $disk_env{$key} = $value;
693: }
694: untie(%disk_env);
695: }
696: }
697: return 'ok';
698: }
699: # ----------------------------------------------------- Delete from Environment
700:
701: sub delenv {
702: my ($delthis,$regexp,$roles) = @_;
703: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
704: my $refused = 1;
705: if (ref($roles) eq 'ARRAY') {
706: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
707: if (grep(/^\Q$role\E$/,@{$roles})) {
708: $refused = 0;
709: }
710: }
711: if ($refused) {
712: &logthis("<font color=\"blue\">WARNING: ".
713: "Attempt to delete from environment ".$delthis);
714: return 'error';
715: }
716: }
717: my $opened = open(my $env_file,'+<',$env{'user.environment'});
718: if ($opened
719: && &timed_flock($env_file,LOCK_EX)
720: &&
721: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
722: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
723: foreach my $key (keys(%disk_env)) {
724: if ($regexp) {
725: if ($key=~/^$delthis/) {
726: delete($env{$key});
727: delete($disk_env{$key});
728: }
729: } else {
730: if ($key=~/^\Q$delthis\E/) {
731: delete($env{$key});
732: delete($disk_env{$key});
733: }
734: }
735: }
736: untie(%disk_env);
737: }
738: return 'ok';
739: }
740:
741: sub get_env_multiple {
742: my ($name) = @_;
743: my @values;
744: if (defined($env{$name})) {
745: # exists is it an array
746: if (ref($env{$name})) {
747: @values=@{ $env{$name} };
748: } else {
749: $values[0]=$env{$name};
750: }
751: }
752: return(@values);
753: }
754:
755: # ------------------------------------------------------------------- Locking
756:
757: sub set_lock {
758: my ($text)=@_;
759: $locknum++;
760: my $id=$$.'-'.$locknum;
761: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
762: 'session.lock.'.$id => $text});
763: return $id;
764: }
765:
766: sub get_locks {
767: my $num=0;
768: my %texts=();
769: foreach my $lock (split(/\,/,$env{'session.locks'})) {
770: if ($lock=~/\w/) {
771: $num++;
772: $texts{$lock}=$env{'session.lock.'.$lock};
773: }
774: }
775: return ($num,%texts);
776: }
777:
778: sub remove_lock {
779: my ($id)=@_;
780: my $newlocks='';
781: foreach my $lock (split(/\,/,$env{'session.locks'})) {
782: if (($lock=~/\w/) && ($lock ne $id)) {
783: $newlocks.=','.$lock;
784: }
785: }
786: &appenv({'session.locks' => $newlocks});
787: &delenv('session.lock.'.$id);
788: }
789:
790: sub remove_all_locks {
791: my $activelocks=$env{'session.locks'};
792: foreach my $lock (split(/\,/,$env{'session.locks'})) {
793: if ($lock=~/\w/) {
794: &remove_lock($lock);
795: }
796: }
797: }
798:
799:
800: # ------------------------------------------ Find out current server userload
801: sub userload {
802: my $numusers=0;
803: {
804: opendir(LONIDS,$perlvar{'lonIDsDir'});
805: my $filename;
806: my $curtime=time;
807: while ($filename=readdir(LONIDS)) {
808: next if ($filename eq '.' || $filename eq '..');
809: next if ($filename =~ /publicuser_\d+\.id/);
810: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
811: if ($curtime-$mtime < 1800) { $numusers++; }
812: }
813: closedir(LONIDS);
814: }
815: my $userloadpercent=0;
816: my $maxuserload=$perlvar{'lonUserLoadLim'};
817: if ($maxuserload) {
818: $userloadpercent=100*$numusers/$maxuserload;
819: }
820: $userloadpercent=sprintf("%.2f",$userloadpercent);
821: return $userloadpercent;
822: }
823:
824: # ------------------------------ Find server with least workload from spare.tab
825:
826: sub spareserver {
827: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
828: my $spare_server;
829: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
830: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
831: : $userloadpercent;
832: my ($uint_dom,$remotesessions);
833: if (($udom ne '') && (&domain($udom) ne '')) {
834: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
835: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
836: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
837: $remotesessions = $udomdefaults{'remotesessions'};
838: }
839: my $spareshash = &this_host_spares($udom);
840: if (ref($spareshash) eq 'HASH') {
841: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
842: foreach my $try_server (@{ $spareshash->{'primary'} }) {
843: if ($uint_dom) {
844: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
845: $try_server));
846: }
847: ($spare_server, $lowest_load) =
848: &compare_server_load($try_server, $spare_server, $lowest_load);
849: }
850: }
851:
852: my $found_server = ($spare_server ne '' && $lowest_load < 100);
853:
854: if (!$found_server) {
855: if (ref($spareshash->{'default'}) eq 'ARRAY') {
856: foreach my $try_server (@{ $spareshash->{'default'} }) {
857: if ($uint_dom) {
858: next unless (&spare_can_host($udom,$uint_dom,
859: $remotesessions,$try_server));
860: }
861: ($spare_server, $lowest_load) =
862: &compare_server_load($try_server, $spare_server, $lowest_load);
863: }
864: }
865: }
866: }
867:
868: if (!$want_server_name) {
869: my $protocol = 'http';
870: if ($protocol{$spare_server} eq 'https') {
871: $protocol = $protocol{$spare_server};
872: }
873: if (defined($spare_server)) {
874: my $hostname = &hostname($spare_server);
875: if (defined($hostname)) {
876: $spare_server = $protocol.'://'.$hostname;
877: }
878: }
879: }
880: return $spare_server;
881: }
882:
883: sub compare_server_load {
884: my ($try_server, $spare_server, $lowest_load) = @_;
885:
886: my $loadans = &reply('load', $try_server);
887: my $userloadans = &reply('userload',$try_server);
888:
889: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
890: return ($spare_server, $lowest_load); #didn't get a number from the server
891: }
892:
893: my $load;
894: if ($loadans =~ /\d/) {
895: if ($userloadans =~ /\d/) {
896: #both are numbers, pick the bigger one
897: $load = ($loadans > $userloadans) ? $loadans
898: : $userloadans;
899: } else {
900: $load = $loadans;
901: }
902: } else {
903: $load = $userloadans;
904: }
905:
906: if (($load =~ /\d/) && ($load < $lowest_load)) {
907: $spare_server = $try_server;
908: $lowest_load = $load;
909: }
910: return ($spare_server,$lowest_load);
911: }
912:
913: # --------------------------- ask offload servers if user already has a session
914: sub find_existing_session {
915: my ($udom,$uname) = @_;
916: my $spareshash = &this_host_spares($udom);
917: if (ref($spareshash) eq 'HASH') {
918: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
919: foreach my $try_server (@{ $spareshash->{'primary'} }) {
920: return $try_server if (&has_user_session($try_server, $udom, $uname));
921: }
922: }
923: if (ref($spareshash->{'default'}) eq 'ARRAY') {
924: foreach my $try_server (@{ $spareshash->{'default'} }) {
925: return $try_server if (&has_user_session($try_server, $udom, $uname));
926: }
927: }
928: }
929: return;
930: }
931:
932: # -------------------------------- ask if server already has a session for user
933: sub has_user_session {
934: my ($lonid,$udom,$uname) = @_;
935: my $result = &reply(join(':','userhassession',
936: map {&escape($_)} ($udom,$uname)),$lonid);
937: return 1 if ($result eq 'ok');
938:
939: return 0;
940: }
941:
942: # --------- determine least loaded server in a user's domain which allows login
943:
944: sub choose_server {
945: my ($udom,$checkloginvia) = @_;
946: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
947: my %servers = &get_servers($udom);
948: my $lowest_load = 30000;
949: my ($login_host,$hostname,$portal_path,$isredirect);
950: foreach my $lonhost (keys(%servers)) {
951: my $loginvia;
952: if ($checkloginvia) {
953: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
954: if ($loginvia) {
955: my ($server,$path) = split(/:/,$loginvia);
956: ($login_host, $lowest_load) =
957: &compare_server_load($server, $login_host, $lowest_load);
958: if ($login_host eq $server) {
959: $portal_path = $path;
960: $isredirect = 1;
961: }
962: } else {
963: ($login_host, $lowest_load) =
964: &compare_server_load($lonhost, $login_host, $lowest_load);
965: if ($login_host eq $lonhost) {
966: $portal_path = '';
967: $isredirect = '';
968: }
969: }
970: } else {
971: ($login_host, $lowest_load) =
972: &compare_server_load($lonhost, $login_host, $lowest_load);
973: }
974: }
975: if ($login_host ne '') {
976: $hostname = &hostname($login_host);
977: }
978: return ($login_host,$hostname,$portal_path,$isredirect);
979: }
980:
981: # --------------------------------------------- Try to change a user's password
982:
983: sub changepass {
984: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
985: $currentpass = &escape($currentpass);
986: $newpass = &escape($newpass);
987: my $lonhost = $perlvar{'lonHostID'};
988: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
989: $server);
990: if (! $answer) {
991: &logthis("No reply on password change request to $server ".
992: "by $uname in domain $udom.");
993: } elsif ($answer =~ "^ok") {
994: &logthis("$uname in $udom successfully changed their password ".
995: "on $server.");
996: } elsif ($answer =~ "^pwchange_failure") {
997: &logthis("$uname in $udom was unable to change their password ".
998: "on $server. The action was blocked by either lcpasswd ".
999: "or pwchange");
1000: } elsif ($answer =~ "^non_authorized") {
1001: &logthis("$uname in $udom did not get their password correct when ".
1002: "attempting to change it on $server.");
1003: } elsif ($answer =~ "^auth_mode_error") {
1004: &logthis("$uname in $udom attempted to change their password despite ".
1005: "not being locally or internally authenticated on $server.");
1006: } elsif ($answer =~ "^unknown_user") {
1007: &logthis("$uname in $udom attempted to change their password ".
1008: "on $server but were unable to because $server is not ".
1009: "their home server.");
1010: } elsif ($answer =~ "^refused") {
1011: &logthis("$server refused to change $uname in $udom password because ".
1012: "it was sent an unencrypted request to change the password.");
1013: } elsif ($answer =~ "invalid_client") {
1014: &logthis("$server refused to change $uname in $udom password because ".
1015: "it was a reset by e-mail originating from an invalid server.");
1016: }
1017: return $answer;
1018: }
1019:
1020: # ----------------------- Try to determine user's current authentication scheme
1021:
1022: sub queryauthenticate {
1023: my ($uname,$udom)=@_;
1024: my $uhome=&homeserver($uname,$udom);
1025: if (!$uhome) {
1026: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1027: return 'no_host';
1028: }
1029: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1030: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1031: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1032: }
1033: return $answer;
1034: }
1035:
1036: # --------- Try to authenticate user from domain's lib servers (first this one)
1037:
1038: sub authenticate {
1039: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1040: $upass=&escape($upass);
1041: $uname= &LONCAPA::clean_username($uname);
1042: my $uhome=&homeserver($uname,$udom,1);
1043: my $newhome;
1044: if ((!$uhome) || ($uhome eq 'no_host')) {
1045: # Maybe the machine was offline and only re-appeared again recently?
1046: &reconlonc();
1047: # One more
1048: $uhome=&homeserver($uname,$udom,1);
1049: if (($uhome eq 'no_host') && $checkdefauth) {
1050: if (defined(&domain($udom,'primary'))) {
1051: $newhome=&domain($udom,'primary');
1052: }
1053: if ($newhome ne '') {
1054: $uhome = $newhome;
1055: }
1056: }
1057: if ((!$uhome) || ($uhome eq 'no_host')) {
1058: &logthis("User $uname at $udom is unknown in authenticate");
1059: return 'no_host';
1060: }
1061: }
1062: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1063: if ($answer eq 'authorized') {
1064: if ($newhome) {
1065: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1066: return 'no_account_on_host';
1067: } else {
1068: &logthis("User $uname at $udom authorized by $uhome");
1069: return $uhome;
1070: }
1071: }
1072: if ($answer eq 'non_authorized') {
1073: &logthis("User $uname at $udom rejected by $uhome");
1074: return 'no_host';
1075: }
1076: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1077: return 'no_host';
1078: }
1079:
1080: sub can_host_session {
1081: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1082: my $canhost = 1;
1083: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1084: if (ref($remotesessions) eq 'HASH') {
1085: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1086: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1087: $canhost = 0;
1088: } else {
1089: $canhost = 1;
1090: }
1091: }
1092: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1093: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1094: $canhost = 1;
1095: } else {
1096: $canhost = 0;
1097: }
1098: }
1099: if ($canhost) {
1100: if ($remotesessions->{'version'} ne '') {
1101: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1102: if ($reqmajor ne '' && $reqminor ne '') {
1103: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1104: my $major = $1;
1105: my $minor = $2;
1106: if (($major < $reqmajor ) ||
1107: (($major == $reqmajor) && ($minor < $reqminor))) {
1108: $canhost = 0;
1109: }
1110: } else {
1111: $canhost = 0;
1112: }
1113: }
1114: }
1115: }
1116: }
1117: if ($canhost) {
1118: if (ref($hostedsessions) eq 'HASH') {
1119: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1120: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1121: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1122: if (($uint_dom ne '') &&
1123: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1124: $canhost = 0;
1125: } else {
1126: $canhost = 1;
1127: }
1128: }
1129: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1130: if (($uint_dom ne '') &&
1131: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1132: $canhost = 1;
1133: } else {
1134: $canhost = 0;
1135: }
1136: }
1137: }
1138: }
1139: return $canhost;
1140: }
1141:
1142: sub spare_can_host {
1143: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1144: my $canhost=1;
1145: my @intdoms;
1146: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1147: if (ref($internet_names) eq 'ARRAY') {
1148: @intdoms = @{$internet_names};
1149: }
1150: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1151: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1152: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1153: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1154: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1155: $canhost = &can_host_session($udom,$try_server,$remoterev,
1156: $remotesessions,
1157: $defdomdefaults{'hostedsessions'});
1158: }
1159: return $canhost;
1160: }
1161:
1162: sub this_host_spares {
1163: my ($dom) = @_;
1164: my ($dom_in_use,$lonhost_in_use,$result);
1165: my @hosts = ¤t_machine_ids();
1166: foreach my $lonhost (@hosts) {
1167: if (&host_domain($lonhost) eq $dom) {
1168: $dom_in_use = $dom;
1169: $lonhost_in_use = $lonhost;
1170: last;
1171: }
1172: }
1173: if ($dom_in_use ne '') {
1174: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1175: }
1176: if (ref($result) ne 'HASH') {
1177: $lonhost_in_use = $perlvar{'lonHostID'};
1178: $dom_in_use = &host_domain($lonhost_in_use);
1179: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1180: if (ref($result) ne 'HASH') {
1181: $result = \%spareid;
1182: }
1183: }
1184: return $result;
1185: }
1186:
1187: sub spares_for_offload {
1188: my ($dom_in_use,$lonhost_in_use) = @_;
1189: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1190: if (defined($cached)) {
1191: return $result;
1192: } else {
1193: my $cachetime = 60*60*24;
1194: my %domconfig =
1195: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1196: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1197: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1198: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1199: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1200: }
1201: }
1202: }
1203: }
1204: return;
1205: }
1206:
1207: sub get_lonbalancer_config {
1208: my ($servers) = @_;
1209: my ($currbalancer,$currtargets);
1210: if (ref($servers) eq 'HASH') {
1211: foreach my $server (keys(%{$servers})) {
1212: my %what = (
1213: spareid => 1,
1214: perlvar => 1,
1215: );
1216: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1217: if ($result eq 'ok') {
1218: if (ref($returnhash) eq 'HASH') {
1219: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1220: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1221: $currbalancer = $server;
1222: $currtargets = {};
1223: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1224: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1225: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1226: }
1227: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1228: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1229: }
1230: }
1231: last;
1232: }
1233: }
1234: }
1235: }
1236: }
1237: }
1238: return ($currbalancer,$currtargets);
1239: }
1240:
1241: sub check_loadbalancing {
1242: my ($uname,$udom) = @_;
1243: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1244: $rule_in_effect,$offloadto,$otherserver);
1245: my $lonhost = $perlvar{'lonHostID'};
1246: my @hosts = ¤t_machine_ids();
1247: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1248: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1249: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1250: my $serverhomedom = &host_domain($lonhost);
1251:
1252: my $cachetime = 60*60*24;
1253:
1254: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1255: $dom_in_use = $udom;
1256: $homeintdom = 1;
1257: } else {
1258: $dom_in_use = $serverhomedom;
1259: }
1260: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1261: unless (defined($cached)) {
1262: my %domconfig =
1263: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1264: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1265: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1266: }
1267: }
1268: if (ref($result) eq 'HASH') {
1269: ($is_balancer,$currtargets,$currrules) =
1270: &check_balancer_result($result,@hosts);
1271: if ($is_balancer) {
1272: if (ref($currrules) eq 'HASH') {
1273: if ($homeintdom) {
1274: if ($uname ne '') {
1275: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1276: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1277: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1278: $rule_in_effect = $currrules->{'_LC_author'};
1279: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1280: $rule_in_effect = $currrules->{'_LC_adv'}
1281: }
1282: }
1283: if ($rule_in_effect eq '') {
1284: my %userenv = &userenvironment($udom,$uname,'inststatus');
1285: if ($userenv{'inststatus'} ne '') {
1286: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1287: my ($othertitle,$usertypes,$types) =
1288: &Apache::loncommon::sorted_inst_types($udom);
1289: if (ref($types) eq 'ARRAY') {
1290: foreach my $type (@{$types}) {
1291: if (grep(/^\Q$type\E$/,@statuses)) {
1292: if (exists($currrules->{$type})) {
1293: $rule_in_effect = $currrules->{$type};
1294: }
1295: }
1296: }
1297: }
1298: } else {
1299: if (exists($currrules->{'default'})) {
1300: $rule_in_effect = $currrules->{'default'};
1301: }
1302: }
1303: }
1304: } else {
1305: if (exists($currrules->{'default'})) {
1306: $rule_in_effect = $currrules->{'default'};
1307: }
1308: }
1309: } else {
1310: if ($currrules->{'_LC_external'} ne '') {
1311: $rule_in_effect = $currrules->{'_LC_external'};
1312: }
1313: }
1314: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1315: $uname,$udom);
1316: }
1317: }
1318: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1319: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1320: unless (defined($cached)) {
1321: my %domconfig =
1322: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1323: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1324: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1325: }
1326: }
1327: if (ref($result) eq 'HASH') {
1328: ($is_balancer,$currtargets,$currrules) =
1329: &check_balancer_result($result,@hosts);
1330: if ($is_balancer) {
1331: if (ref($currrules) eq 'HASH') {
1332: if ($currrules->{'_LC_internetdom'} ne '') {
1333: $rule_in_effect = $currrules->{'_LC_internetdom'};
1334: }
1335: }
1336: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1337: $uname,$udom);
1338: }
1339: } else {
1340: if ($perlvar{'lonBalancer'} eq 'yes') {
1341: $is_balancer = 1;
1342: $offloadto = &this_host_spares($dom_in_use);
1343: }
1344: }
1345: } else {
1346: if ($perlvar{'lonBalancer'} eq 'yes') {
1347: $is_balancer = 1;
1348: $offloadto = &this_host_spares($dom_in_use);
1349: }
1350: }
1351: if ($is_balancer) {
1352: my $lowest_load = 30000;
1353: if (ref($offloadto) eq 'HASH') {
1354: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1355: foreach my $try_server (@{$offloadto->{'primary'}}) {
1356: ($otherserver,$lowest_load) =
1357: &compare_server_load($try_server,$otherserver,$lowest_load);
1358: }
1359: }
1360: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1361:
1362: if (!$found_server) {
1363: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1364: foreach my $try_server (@{$offloadto->{'default'}}) {
1365: ($otherserver,$lowest_load) =
1366: &compare_server_load($try_server,$otherserver,$lowest_load);
1367: }
1368: }
1369: }
1370: } elsif (ref($offloadto) eq 'ARRAY') {
1371: if (@{$offloadto} == 1) {
1372: $otherserver = $offloadto->[0];
1373: } elsif (@{$offloadto} > 1) {
1374: foreach my $try_server (@{$offloadto}) {
1375: ($otherserver,$lowest_load) =
1376: &compare_server_load($try_server,$otherserver,$lowest_load);
1377: }
1378: }
1379: }
1380: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1381: $is_balancer = 0;
1382: if ($uname ne '' && $udom ne '') {
1383: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1384:
1385: &appenv({'user.loadbalexempt' => $lonhost,
1386: 'user.loadbalcheck.time' => time});
1387: }
1388: }
1389: }
1390: }
1391: return ($is_balancer,$otherserver);
1392: }
1393:
1394: sub check_balancer_result {
1395: my ($result,@hosts) = @_;
1396: my ($is_balancer,$currtargets,$currrules);
1397: if (ref($result) eq 'HASH') {
1398: if ($result->{'lonhost'} ne '') {
1399: my $currbalancer = $result->{'lonhost'};
1400: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1401: $is_balancer = 1;
1402: $currtargets = $result->{'targets'};
1403: $currrules = $result->{'rules'};
1404: }
1405: } else {
1406: foreach my $key (keys(%{$result})) {
1407: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1408: (ref($result->{$key}) eq 'HASH')) {
1409: $is_balancer = 1;
1410: $currrules = $result->{$key}{'rules'};
1411: $currtargets = $result->{$key}{'targets'};
1412: last;
1413: }
1414: }
1415: }
1416: }
1417: return ($is_balancer,$currtargets,$currrules);
1418: }
1419:
1420: sub get_loadbalancer_targets {
1421: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1422: my $offloadto;
1423: if ($rule_in_effect eq 'none') {
1424: return [$perlvar{'lonHostID'}];
1425: } elsif ($rule_in_effect eq '') {
1426: $offloadto = $currtargets;
1427: } else {
1428: if ($rule_in_effect eq 'homeserver') {
1429: my $homeserver = &homeserver($uname,$udom);
1430: if ($homeserver ne 'no_host') {
1431: $offloadto = [$homeserver];
1432: }
1433: } elsif ($rule_in_effect eq 'externalbalancer') {
1434: my %domconfig =
1435: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1436: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1437: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1438: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1439: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1440: }
1441: }
1442: } else {
1443: my %servers = &internet_dom_servers($udom);
1444: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1445: if (&hostname($remotebalancer) ne '') {
1446: $offloadto = [$remotebalancer];
1447: }
1448: }
1449: } elsif (&hostname($rule_in_effect) ne '') {
1450: $offloadto = [$rule_in_effect];
1451: }
1452: }
1453: return $offloadto;
1454: }
1455:
1456: sub internet_dom_servers {
1457: my ($dom) = @_;
1458: my (%uniqservers,%servers);
1459: my $primaryserver = &hostname(&domain($dom,'primary'));
1460: my @machinedoms = &machine_domains($primaryserver);
1461: foreach my $mdom (@machinedoms) {
1462: my %currservers = %servers;
1463: my %server = &get_servers($mdom);
1464: %servers = (%currservers,%server);
1465: }
1466: my %by_hostname;
1467: foreach my $id (keys(%servers)) {
1468: push(@{$by_hostname{$servers{$id}}},$id);
1469: }
1470: foreach my $hostname (sort(keys(%by_hostname))) {
1471: if (@{$by_hostname{$hostname}} > 1) {
1472: my $match = 0;
1473: foreach my $id (@{$by_hostname{$hostname}}) {
1474: if (&host_domain($id) eq $dom) {
1475: $uniqservers{$id} = $hostname;
1476: $match = 1;
1477: }
1478: }
1479: unless ($match) {
1480: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1481: }
1482: } else {
1483: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1484: }
1485: }
1486: return %uniqservers;
1487: }
1488:
1489: # ---------------------- Find the homebase for a user from domain's lib servers
1490:
1491: my %homecache;
1492: sub homeserver {
1493: my ($uname,$udom,$ignoreBadCache)=@_;
1494: my $index="$uname:$udom";
1495:
1496: if (exists($homecache{$index})) { return $homecache{$index}; }
1497:
1498: my %servers = &get_servers($udom,'library');
1499: foreach my $tryserver (keys(%servers)) {
1500: next if ($ignoreBadCache ne 'true' &&
1501: exists($badServerCache{$tryserver}));
1502:
1503: my $answer=reply("home:$udom:$uname",$tryserver);
1504: if ($answer eq 'found') {
1505: delete($badServerCache{$tryserver});
1506: return $homecache{$index}=$tryserver;
1507: } elsif ($answer eq 'no_host') {
1508: $badServerCache{$tryserver}=1;
1509: }
1510: }
1511: return 'no_host';
1512: }
1513:
1514: # ------------------------------------- Find the usernames behind a list of IDs
1515:
1516: sub idget {
1517: my ($udom,@ids)=@_;
1518: my %returnhash=();
1519:
1520: my %servers = &get_servers($udom,'library');
1521: foreach my $tryserver (keys(%servers)) {
1522: my $idlist=join('&',@ids);
1523: $idlist=~tr/A-Z/a-z/;
1524: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1525: my @answer=();
1526: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1527: @answer=split(/\&/,$reply);
1528: } ;
1529: my $i;
1530: for ($i=0;$i<=$#ids;$i++) {
1531: if ($answer[$i]) {
1532: $returnhash{$ids[$i]}=$answer[$i];
1533: }
1534: }
1535: }
1536: return %returnhash;
1537: }
1538:
1539: # ------------------------------------- Find the IDs behind a list of usernames
1540:
1541: sub idrget {
1542: my ($udom,@unames)=@_;
1543: my %returnhash=();
1544: foreach my $uname (@unames) {
1545: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1546: }
1547: return %returnhash;
1548: }
1549:
1550: # ------------------------------- Store away a list of names and associated IDs
1551:
1552: sub idput {
1553: my ($udom,%ids)=@_;
1554: my %servers=();
1555: foreach my $uname (keys(%ids)) {
1556: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1557: my $uhom=&homeserver($uname,$udom);
1558: if ($uhom ne 'no_host') {
1559: my $id=&escape($ids{$uname});
1560: $id=~tr/A-Z/a-z/;
1561: my $esc_unam=&escape($uname);
1562: if ($servers{$uhom}) {
1563: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1564: } else {
1565: $servers{$uhom}=$id.'='.$esc_unam;
1566: }
1567: }
1568: }
1569: foreach my $server (keys(%servers)) {
1570: &critical('idput:'.$udom.':'.$servers{$server},$server);
1571: }
1572: }
1573:
1574: # ------------------------------dump from db file owned by domainconfig user
1575: sub dump_dom {
1576: my ($namespace, $udom, $regexp) = @_;
1577:
1578: $udom ||= $env{'user.domain'};
1579:
1580: return () unless $udom;
1581:
1582: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1583: }
1584:
1585: # ------------------------------------------ get items from domain db files
1586:
1587: sub get_dom {
1588: my ($namespace,$storearr,$udom,$uhome)=@_;
1589: my $items='';
1590: foreach my $item (@$storearr) {
1591: $items.=&escape($item).'&';
1592: }
1593: $items=~s/\&$//;
1594: if (!$udom) {
1595: $udom=$env{'user.domain'};
1596: if (defined(&domain($udom,'primary'))) {
1597: $uhome=&domain($udom,'primary');
1598: } else {
1599: undef($uhome);
1600: }
1601: } else {
1602: if (!$uhome) {
1603: if (defined(&domain($udom,'primary'))) {
1604: $uhome=&domain($udom,'primary');
1605: }
1606: }
1607: }
1608: if ($udom && $uhome && ($uhome ne 'no_host')) {
1609: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1610: my %returnhash;
1611: if ($rep eq '' || $rep =~ /^error: 2 /) {
1612: return %returnhash;
1613: }
1614: my @pairs=split(/\&/,$rep);
1615: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1616: return @pairs;
1617: }
1618: my $i=0;
1619: foreach my $item (@$storearr) {
1620: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1621: $i++;
1622: }
1623: return %returnhash;
1624: } else {
1625: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1626: }
1627: }
1628:
1629: # -------------------------------------------- put items in domain db files
1630:
1631: sub put_dom {
1632: my ($namespace,$storehash,$udom,$uhome)=@_;
1633: if (!$udom) {
1634: $udom=$env{'user.domain'};
1635: if (defined(&domain($udom,'primary'))) {
1636: $uhome=&domain($udom,'primary');
1637: } else {
1638: undef($uhome);
1639: }
1640: } else {
1641: if (!$uhome) {
1642: if (defined(&domain($udom,'primary'))) {
1643: $uhome=&domain($udom,'primary');
1644: }
1645: }
1646: }
1647: if ($udom && $uhome && ($uhome ne 'no_host')) {
1648: my $items='';
1649: foreach my $item (keys(%$storehash)) {
1650: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1651: }
1652: $items=~s/\&$//;
1653: return &reply("putdom:$udom:$namespace:$items",$uhome);
1654: } else {
1655: &logthis("put_dom failed - no homeserver and/or domain");
1656: }
1657: }
1658:
1659: # --------------------- newput for items in db file owned by domainconfig user
1660: sub newput_dom {
1661: my ($namespace,$storehash,$udom) = @_;
1662: my $result;
1663: if (!$udom) {
1664: $udom=$env{'user.domain'};
1665: }
1666: if ($udom) {
1667: my $uname = &get_domainconfiguser($udom);
1668: $result = &newput($namespace,$storehash,$udom,$uname);
1669: }
1670: return $result;
1671: }
1672:
1673: # --------------------- delete for items in db file owned by domainconfig user
1674: sub del_dom {
1675: my ($namespace,$storearr,$udom)=@_;
1676: if (ref($storearr) eq 'ARRAY') {
1677: if (!$udom) {
1678: $udom=$env{'user.domain'};
1679: }
1680: if ($udom) {
1681: my $uname = &get_domainconfiguser($udom);
1682: return &del($namespace,$storearr,$udom,$uname);
1683: }
1684: }
1685: }
1686:
1687: # ----------------------------------construct domainconfig user for a domain
1688: sub get_domainconfiguser {
1689: my ($udom) = @_;
1690: return $udom.'-domainconfig';
1691: }
1692:
1693: sub retrieve_inst_usertypes {
1694: my ($udom) = @_;
1695: my (%returnhash,@order);
1696: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1697: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1698: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1699: %returnhash = %{$domdefs{'inststatustypes'}};
1700: @order = @{$domdefs{'inststatusorder'}};
1701: } else {
1702: if (defined(&domain($udom,'primary'))) {
1703: my $uhome=&domain($udom,'primary');
1704: my $rep=&reply("inst_usertypes:$udom",$uhome);
1705: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1706: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1707: return (\%returnhash,\@order);
1708: }
1709: my ($hashitems,$orderitems) = split(/:/,$rep);
1710: my @pairs=split(/\&/,$hashitems);
1711: foreach my $item (@pairs) {
1712: my ($key,$value)=split(/=/,$item,2);
1713: $key = &unescape($key);
1714: next if ($key =~ /^error: 2 /);
1715: $returnhash{$key}=&thaw_unescape($value);
1716: }
1717: my @esc_order = split(/\&/,$orderitems);
1718: foreach my $item (@esc_order) {
1719: push(@order,&unescape($item));
1720: }
1721: } else {
1722: &logthis("get_dom failed - no primary domain server for $udom");
1723: }
1724: }
1725: return (\%returnhash,\@order);
1726: }
1727:
1728: sub is_domainimage {
1729: my ($url) = @_;
1730: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1731: if (&domain($1) ne '') {
1732: return '1';
1733: }
1734: }
1735: return;
1736: }
1737:
1738: sub inst_directory_query {
1739: my ($srch) = @_;
1740: my $udom = $srch->{'srchdomain'};
1741: my %results;
1742: my $homeserver = &domain($udom,'primary');
1743: my $outcome;
1744: if ($homeserver ne '') {
1745: my $queryid=&reply("querysend:instdirsearch:".
1746: &escape($srch->{'srchby'}).':'.
1747: &escape($srch->{'srchterm'}).':'.
1748: &escape($srch->{'srchtype'}),$homeserver);
1749: my $host=&hostname($homeserver);
1750: if ($queryid !~/^\Q$host\E\_/) {
1751: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1752: return;
1753: }
1754: my $response = &get_query_reply($queryid);
1755: my $maxtries = 5;
1756: my $tries = 1;
1757: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1758: $response = &get_query_reply($queryid);
1759: $tries ++;
1760: }
1761:
1762: if (!&error($response) && $response ne 'refused') {
1763: if ($response eq 'unavailable') {
1764: $outcome = $response;
1765: } else {
1766: $outcome = 'ok';
1767: my @matches = split(/\n/,$response);
1768: foreach my $match (@matches) {
1769: my ($key,$value) = split(/=/,$match);
1770: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1771: }
1772: }
1773: }
1774: }
1775: return ($outcome,%results);
1776: }
1777:
1778: sub usersearch {
1779: my ($srch) = @_;
1780: my $dom = $srch->{'srchdomain'};
1781: my %results;
1782: my %libserv = &all_library();
1783: my $query = 'usersearch';
1784: foreach my $tryserver (keys(%libserv)) {
1785: if (&host_domain($tryserver) eq $dom) {
1786: my $host=&hostname($tryserver);
1787: my $queryid=
1788: &reply("querysend:".&escape($query).':'.
1789: &escape($srch->{'srchby'}).':'.
1790: &escape($srch->{'srchtype'}).':'.
1791: &escape($srch->{'srchterm'}),$tryserver);
1792: if ($queryid !~/^\Q$host\E\_/) {
1793: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1794: next;
1795: }
1796: my $reply = &get_query_reply($queryid);
1797: my $maxtries = 1;
1798: my $tries = 1;
1799: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1800: $reply = &get_query_reply($queryid);
1801: $tries ++;
1802: }
1803: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1804: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1805: } else {
1806: my @matches;
1807: if ($reply =~ /\n/) {
1808: @matches = split(/\n/,$reply);
1809: } else {
1810: @matches = split(/\&/,$reply);
1811: }
1812: foreach my $match (@matches) {
1813: my ($uname,$udom,%userhash);
1814: foreach my $entry (split(/:/,$match)) {
1815: my ($key,$value) =
1816: map {&unescape($_);} split(/=/,$entry);
1817: $userhash{$key} = $value;
1818: if ($key eq 'username') {
1819: $uname = $value;
1820: } elsif ($key eq 'domain') {
1821: $udom = $value;
1822: }
1823: }
1824: $results{$uname.':'.$udom} = \%userhash;
1825: }
1826: }
1827: }
1828: }
1829: return %results;
1830: }
1831:
1832: sub get_instuser {
1833: my ($udom,$uname,$id) = @_;
1834: my $homeserver = &domain($udom,'primary');
1835: my ($outcome,%results);
1836: if ($homeserver ne '') {
1837: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1838: &escape($id).':'.&escape($udom),$homeserver);
1839: my $host=&hostname($homeserver);
1840: if ($queryid !~/^\Q$host\E\_/) {
1841: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1842: return;
1843: }
1844: my $response = &get_query_reply($queryid);
1845: my $maxtries = 5;
1846: my $tries = 1;
1847: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1848: $response = &get_query_reply($queryid);
1849: $tries ++;
1850: }
1851: if (!&error($response) && $response ne 'refused') {
1852: if ($response eq 'unavailable') {
1853: $outcome = $response;
1854: } else {
1855: $outcome = 'ok';
1856: my @matches = split(/\n/,$response);
1857: foreach my $match (@matches) {
1858: my ($key,$value) = split(/=/,$match);
1859: $results{&unescape($key)} = &thaw_unescape($value);
1860: }
1861: }
1862: }
1863: }
1864: my %userinfo;
1865: if (ref($results{$uname}) eq 'HASH') {
1866: %userinfo = %{$results{$uname}};
1867: }
1868: return ($outcome,%userinfo);
1869: }
1870:
1871: sub inst_rulecheck {
1872: my ($udom,$uname,$id,$item,$rules) = @_;
1873: my %returnhash;
1874: if ($udom ne '') {
1875: if (ref($rules) eq 'ARRAY') {
1876: @{$rules} = map {&escape($_);} (@{$rules});
1877: my $rulestr = join(':',@{$rules});
1878: my $homeserver=&domain($udom,'primary');
1879: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1880: my $response;
1881: if ($item eq 'username') {
1882: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1883: ':'.&escape($uname).':'.$rulestr,
1884: $homeserver));
1885: } elsif ($item eq 'id') {
1886: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1887: ':'.&escape($id).':'.$rulestr,
1888: $homeserver));
1889: } elsif ($item eq 'selfcreate') {
1890: $response=&unescape(&reply('instselfcreatecheck:'.
1891: &escape($udom).':'.&escape($uname).
1892: ':'.$rulestr,$homeserver));
1893: }
1894: if ($response ne 'refused') {
1895: my @pairs=split(/\&/,$response);
1896: foreach my $item (@pairs) {
1897: my ($key,$value)=split(/=/,$item,2);
1898: $key = &unescape($key);
1899: next if ($key =~ /^error: 2 /);
1900: $returnhash{$key}=&thaw_unescape($value);
1901: }
1902: }
1903: }
1904: }
1905: }
1906: return %returnhash;
1907: }
1908:
1909: sub inst_userrules {
1910: my ($udom,$check) = @_;
1911: my (%ruleshash,@ruleorder);
1912: if ($udom ne '') {
1913: my $homeserver=&domain($udom,'primary');
1914: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1915: my $response;
1916: if ($check eq 'id') {
1917: $response=&reply('instidrules:'.&escape($udom),
1918: $homeserver);
1919: } elsif ($check eq 'email') {
1920: $response=&reply('instemailrules:'.&escape($udom),
1921: $homeserver);
1922: } else {
1923: $response=&reply('instuserrules:'.&escape($udom),
1924: $homeserver);
1925: }
1926: if (($response ne 'refused') && ($response ne 'error') &&
1927: ($response ne 'unknown_cmd') &&
1928: ($response ne 'no_such_host')) {
1929: my ($hashitems,$orderitems) = split(/:/,$response);
1930: my @pairs=split(/\&/,$hashitems);
1931: foreach my $item (@pairs) {
1932: my ($key,$value)=split(/=/,$item,2);
1933: $key = &unescape($key);
1934: next if ($key =~ /^error: 2 /);
1935: $ruleshash{$key}=&thaw_unescape($value);
1936: }
1937: my @esc_order = split(/\&/,$orderitems);
1938: foreach my $item (@esc_order) {
1939: push(@ruleorder,&unescape($item));
1940: }
1941: }
1942: }
1943: }
1944: return (\%ruleshash,\@ruleorder);
1945: }
1946:
1947: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1948:
1949: sub get_domain_defaults {
1950: my ($domain) = @_;
1951: my $cachetime = 60*60*24;
1952: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1953: if (defined($cached)) {
1954: if (ref($result) eq 'HASH') {
1955: return %{$result};
1956: }
1957: }
1958: my %domdefaults;
1959: my %domconfig =
1960: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1961: 'requestcourses','inststatus',
1962: 'coursedefaults','usersessions',
1963: 'requestauthor'],$domain);
1964: if (ref($domconfig{'defaults'}) eq 'HASH') {
1965: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1966: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1967: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1968: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1969: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1970: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1971: } else {
1972: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1973: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1974: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1975: }
1976: if (ref($domconfig{'quotas'}) eq 'HASH') {
1977: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1978: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1979: } else {
1980: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1981: }
1982: my @usertools = ('aboutme','blog','webdav','portfolio');
1983: foreach my $item (@usertools) {
1984: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1985: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1986: }
1987: }
1988: }
1989: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1990: foreach my $item ('official','unofficial','community') {
1991: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1992: }
1993: }
1994: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
1995: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
1996: }
1997: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1998: foreach my $item ('inststatustypes','inststatusorder') {
1999: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2000: }
2001: }
2002: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2003: foreach my $item ('canuse_pdfforms') {
2004: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
2005: }
2006: }
2007: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2008: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2009: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2010: }
2011: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2012: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2013: }
2014: }
2015: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
2016: $cachetime);
2017: return %domdefaults;
2018: }
2019:
2020: # --------------------------------------------------- Assign a key to a student
2021:
2022: sub assign_access_key {
2023: #
2024: # a valid key looks like uname:udom#comments
2025: # comments are being appended
2026: #
2027: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2028: $kdom=
2029: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2030: $knum=
2031: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2032: $cdom=
2033: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2034: $cnum=
2035: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2036: $udom=$env{'user.name'} unless (defined($udom));
2037: $uname=$env{'user.domain'} unless (defined($uname));
2038: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2039: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2040: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2041: # assigned to this person
2042: # - this should not happen,
2043: # unless something went wrong
2044: # the first time around
2045: # ready to assign
2046: $logentry=$1.'; '.$logentry;
2047: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2048: $kdom,$knum) eq 'ok') {
2049: # key now belongs to user
2050: my $envkey='key.'.$cdom.'_'.$cnum;
2051: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2052: &appenv({'environment.'.$envkey => $ckey});
2053: return 'ok';
2054: } else {
2055: return
2056: 'error: Count not permanently assign key, will need to be re-entered later.';
2057: }
2058: } else {
2059: return 'error: Could not assign key, try again later.';
2060: }
2061: } elsif (!$existing{$ckey}) {
2062: # the key does not exist
2063: return 'error: The key does not exist';
2064: } else {
2065: # the key is somebody else's
2066: return 'error: The key is already in use';
2067: }
2068: }
2069:
2070: # ------------------------------------------ put an additional comment on a key
2071:
2072: sub comment_access_key {
2073: #
2074: # a valid key looks like uname:udom#comments
2075: # comments are being appended
2076: #
2077: my ($ckey,$cdom,$cnum,$logentry)=@_;
2078: $cdom=
2079: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2080: $cnum=
2081: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2082: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2083: if ($existing{$ckey}) {
2084: $existing{$ckey}.='; '.$logentry;
2085: # ready to assign
2086: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2087: $cdom,$cnum) eq 'ok') {
2088: return 'ok';
2089: } else {
2090: return 'error: Count not store comment.';
2091: }
2092: } else {
2093: # the key does not exist
2094: return 'error: The key does not exist';
2095: }
2096: }
2097:
2098: # ------------------------------------------------------ Generate a set of keys
2099:
2100: sub generate_access_keys {
2101: my ($number,$cdom,$cnum,$logentry)=@_;
2102: $cdom=
2103: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2104: $cnum=
2105: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2106: unless (&allowed('mky',$cdom)) { return 0; }
2107: unless (($cdom) && ($cnum)) { return 0; }
2108: if ($number>10000) { return 0; }
2109: sleep(2); # make sure don't get same seed twice
2110: srand(time()^($$+($$<<15))); # from "Programming Perl"
2111: my $total=0;
2112: for (my $i=1;$i<=$number;$i++) {
2113: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2114: sprintf("%lx",int(100000*rand)).'-'.
2115: sprintf("%lx",int(100000*rand));
2116: $newkey=~s/1/g/g; # folks mix up 1 and l
2117: $newkey=~s/0/h/g; # and also 0 and O
2118: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2119: if ($existing{$newkey}) {
2120: $i--;
2121: } else {
2122: if (&put('accesskeys',
2123: { $newkey => '# generated '.localtime().
2124: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2125: '; '.$logentry },
2126: $cdom,$cnum) eq 'ok') {
2127: $total++;
2128: }
2129: }
2130: }
2131: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2132: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2133: return $total;
2134: }
2135:
2136: # ------------------------------------------------------- Validate an accesskey
2137:
2138: sub validate_access_key {
2139: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2140: $cdom=
2141: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2142: $cnum=
2143: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2144: $udom=$env{'user.domain'} unless (defined($udom));
2145: $uname=$env{'user.name'} unless (defined($uname));
2146: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2147: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2148: }
2149:
2150: # ------------------------------------- Find the section of student in a course
2151: sub devalidate_getsection_cache {
2152: my ($udom,$unam,$courseid)=@_;
2153: my $hashid="$udom:$unam:$courseid";
2154: &devalidate_cache_new('getsection',$hashid);
2155: }
2156:
2157: sub courseid_to_courseurl {
2158: my ($courseid) = @_;
2159: #already url style courseid
2160: return $courseid if ($courseid =~ m{^/});
2161:
2162: if (exists($env{'course.'.$courseid.'.num'})) {
2163: my $cnum = $env{'course.'.$courseid.'.num'};
2164: my $cdom = $env{'course.'.$courseid.'.domain'};
2165: return "/$cdom/$cnum";
2166: }
2167:
2168: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2169: if (exists($courseinfo{'num'})) {
2170: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2171: }
2172:
2173: return undef;
2174: }
2175:
2176: sub getsection {
2177: my ($udom,$unam,$courseid)=@_;
2178: my $cachetime=1800;
2179:
2180: my $hashid="$udom:$unam:$courseid";
2181: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2182: if (defined($cached)) { return $result; }
2183:
2184: my %Pending;
2185: my %Expired;
2186: #
2187: # Each role can either have not started yet (pending), be active,
2188: # or have expired.
2189: #
2190: # If there is an active role, we are done.
2191: #
2192: # If there is more than one role which has not started yet,
2193: # choose the one which will start sooner
2194: # If there is one role which has not started yet, return it.
2195: #
2196: # If there is more than one expired role, choose the one which ended last.
2197: # If there is a role which has expired, return it.
2198: #
2199: $courseid = &courseid_to_courseurl($courseid);
2200: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2201: foreach my $key (keys(%roleshash)) {
2202: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2203: my $section=$1;
2204: if ($key eq $courseid.'_st') { $section=''; }
2205: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2206: my $now=time;
2207: if (defined($end) && $end && ($now > $end)) {
2208: $Expired{$end}=$section;
2209: next;
2210: }
2211: if (defined($start) && $start && ($now < $start)) {
2212: $Pending{$start}=$section;
2213: next;
2214: }
2215: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2216: }
2217: #
2218: # Presumedly there will be few matching roles from the above
2219: # loop and the sorting time will be negligible.
2220: if (scalar(keys(%Pending))) {
2221: my ($time) = sort {$a <=> $b} keys(%Pending);
2222: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2223: }
2224: if (scalar(keys(%Expired))) {
2225: my @sorted = sort {$a <=> $b} keys(%Expired);
2226: my $time = pop(@sorted);
2227: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2228: }
2229: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2230: }
2231:
2232: sub save_cache {
2233: &purge_remembered();
2234: #&Apache::loncommon::validate_page();
2235: undef(%env);
2236: undef($env_loaded);
2237: }
2238:
2239: my $to_remember=-1;
2240: my %remembered;
2241: my %accessed;
2242: my $kicks=0;
2243: my $hits=0;
2244: sub make_key {
2245: my ($name,$id) = @_;
2246: if (length($id) > 65
2247: && length(&escape($id)) > 200) {
2248: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2249: }
2250: return &escape($name.':'.$id);
2251: }
2252:
2253: sub devalidate_cache_new {
2254: my ($name,$id,$debug) = @_;
2255: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2256: $id=&make_key($name,$id);
2257: $memcache->delete($id);
2258: delete($remembered{$id});
2259: delete($accessed{$id});
2260: }
2261:
2262: sub is_cached_new {
2263: my ($name,$id,$debug) = @_;
2264: $id=&make_key($name,$id);
2265: if (exists($remembered{$id})) {
2266: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2267: $accessed{$id}=[&gettimeofday()];
2268: $hits++;
2269: return ($remembered{$id},1);
2270: }
2271: my $value = $memcache->get($id);
2272: if (!(defined($value))) {
2273: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2274: return (undef,undef);
2275: }
2276: if ($value eq '__undef__') {
2277: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2278: $value=undef;
2279: }
2280: &make_room($id,$value,$debug);
2281: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2282: return ($value,1);
2283: }
2284:
2285: sub do_cache_new {
2286: my ($name,$id,$value,$time,$debug) = @_;
2287: $id=&make_key($name,$id);
2288: my $setvalue=$value;
2289: if (!defined($setvalue)) {
2290: $setvalue='__undef__';
2291: }
2292: if (!defined($time) ) {
2293: $time=600;
2294: }
2295: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2296: my $result = $memcache->set($id,$setvalue,$time);
2297: if (! $result) {
2298: &logthis("caching of id -> $id failed");
2299: $memcache->disconnect_all();
2300: }
2301: # need to make a copy of $value
2302: &make_room($id,$value,$debug);
2303: return $value;
2304: }
2305:
2306: sub make_room {
2307: my ($id,$value,$debug)=@_;
2308:
2309: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2310: : $value;
2311: if ($to_remember<0) { return; }
2312: $accessed{$id}=[&gettimeofday()];
2313: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2314: my $to_kick;
2315: my $max_time=0;
2316: foreach my $other (keys(%accessed)) {
2317: if (&tv_interval($accessed{$other}) > $max_time) {
2318: $to_kick=$other;
2319: $max_time=&tv_interval($accessed{$other});
2320: }
2321: }
2322: delete($remembered{$to_kick});
2323: delete($accessed{$to_kick});
2324: $kicks++;
2325: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2326: return;
2327: }
2328:
2329: sub purge_remembered {
2330: #&logthis("Tossing ".scalar(keys(%remembered)));
2331: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2332: undef(%remembered);
2333: undef(%accessed);
2334: }
2335: # ------------------------------------- Read an entry from a user's environment
2336:
2337: sub userenvironment {
2338: my ($udom,$unam,@what)=@_;
2339: my $items;
2340: foreach my $item (@what) {
2341: $items.=&escape($item).'&';
2342: }
2343: $items=~s/\&$//;
2344: my %returnhash=();
2345: my $uhome = &homeserver($unam,$udom);
2346: unless ($uhome eq 'no_host') {
2347: my @answer=split(/\&/,
2348: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2349: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2350: return %returnhash;
2351: }
2352: my $i;
2353: for ($i=0;$i<=$#what;$i++) {
2354: $returnhash{$what[$i]}=&unescape($answer[$i]);
2355: }
2356: }
2357: return %returnhash;
2358: }
2359:
2360: # ---------------------------------------------------------- Get a studentphoto
2361: sub studentphoto {
2362: my ($udom,$unam,$ext) = @_;
2363: my $home=&Apache::lonnet::homeserver($unam,$udom);
2364: if (defined($env{'request.course.id'})) {
2365: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2366: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2367: return(&retrievestudentphoto($udom,$unam,$ext));
2368: } else {
2369: my ($result,$perm_reqd)=
2370: &Apache::lonnet::auto_photo_permission($unam,$udom);
2371: if ($result eq 'ok') {
2372: if (!($perm_reqd eq 'yes')) {
2373: return(&retrievestudentphoto($udom,$unam,$ext));
2374: }
2375: }
2376: }
2377: }
2378: } else {
2379: my ($result,$perm_reqd) =
2380: &Apache::lonnet::auto_photo_permission($unam,$udom);
2381: if ($result eq 'ok') {
2382: if (!($perm_reqd eq 'yes')) {
2383: return(&retrievestudentphoto($udom,$unam,$ext));
2384: }
2385: }
2386: }
2387: return '/adm/lonKaputt/lonlogo_broken.gif';
2388: }
2389:
2390: sub retrievestudentphoto {
2391: my ($udom,$unam,$ext,$type) = @_;
2392: my $home=&Apache::lonnet::homeserver($unam,$udom);
2393: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2394: if ($ret eq 'ok') {
2395: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2396: if ($type eq 'thumbnail') {
2397: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2398: }
2399: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2400: return $tokenurl;
2401: } else {
2402: if ($type eq 'thumbnail') {
2403: return '/adm/lonKaputt/genericstudent_tn.gif';
2404: } else {
2405: return '/adm/lonKaputt/lonlogo_broken.gif';
2406: }
2407: }
2408: }
2409:
2410: # -------------------------------------------------------------------- New chat
2411:
2412: sub chatsend {
2413: my ($newentry,$anon,$group)=@_;
2414: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2415: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2416: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2417: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2418: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2419: &escape($newentry)).':'.$group,$chome);
2420: }
2421:
2422: # ------------------------------------------ Find current version of a resource
2423:
2424: sub getversion {
2425: my $fname=&clutter(shift);
2426: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2427: return ¤tversion(&filelocation('',$fname));
2428: }
2429:
2430: sub currentversion {
2431: my $fname=shift;
2432: my $author=$fname;
2433: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2434: my ($udom,$uname)=split(/\//,$author);
2435: my $home=&homeserver($uname,$udom);
2436: if ($home eq 'no_host') {
2437: return -1;
2438: }
2439: my $answer=&reply("currentversion:$fname",$home);
2440: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2441: return -1;
2442: }
2443: return $answer;
2444: }
2445:
2446: #
2447: # Return special version number of resource if set by override, empty otherwise
2448: #
2449: sub usedversion {
2450: my $fname=shift;
2451: unless ($fname) { $fname=$env{'request.uri'}; }
2452: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2453: if ($urlversion) { return $urlversion; }
2454: return '';
2455: }
2456:
2457: # ----------------------------- Subscribe to a resource, return URL if possible
2458:
2459: sub subscribe {
2460: my $fname=shift;
2461: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2462: $fname=~s/[\n\r]//g;
2463: my $author=$fname;
2464: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2465: my ($udom,$uname)=split(/\//,$author);
2466: my $home=homeserver($uname,$udom);
2467: if ($home eq 'no_host') {
2468: return 'not_found';
2469: }
2470: my $answer=reply("sub:$fname",$home);
2471: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2472: $answer.=' by '.$home;
2473: }
2474: return $answer;
2475: }
2476:
2477: # -------------------------------------------------------------- Replicate file
2478:
2479: sub repcopy {
2480: my $filename=shift;
2481: $filename=~s/\/+/\//g;
2482: my $londocroot = $perlvar{'lonDocRoot'};
2483: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2484: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2485: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2486: $filename=~m{^/*(uploaded|editupload)/}) {
2487: return &repcopy_userfile($filename);
2488: }
2489: $filename=~s/[\n\r]//g;
2490: my $transname="$filename.in.transfer";
2491: # FIXME: this should flock
2492: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2493: my $remoteurl=subscribe($filename);
2494: if ($remoteurl =~ /^con_lost by/) {
2495: &logthis("Subscribe returned $remoteurl: $filename");
2496: return 'unavailable';
2497: } elsif ($remoteurl eq 'not_found') {
2498: #&logthis("Subscribe returned not_found: $filename");
2499: return 'not_found';
2500: } elsif ($remoteurl =~ /^rejected by/) {
2501: &logthis("Subscribe returned $remoteurl: $filename");
2502: return 'forbidden';
2503: } elsif ($remoteurl eq 'directory') {
2504: return 'ok';
2505: } else {
2506: my $author=$filename;
2507: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2508: my ($udom,$uname)=split(/\//,$author);
2509: my $home=homeserver($uname,$udom);
2510: unless ($home eq $perlvar{'lonHostID'}) {
2511: my @parts=split(/\//,$filename);
2512: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2513: if ($path ne "$londocroot/res") {
2514: &logthis("Malconfiguration for replication: $filename");
2515: return 'bad_request';
2516: }
2517: my $count;
2518: for ($count=5;$count<$#parts;$count++) {
2519: $path.="/$parts[$count]";
2520: if ((-e $path)!=1) {
2521: mkdir($path,0777);
2522: }
2523: }
2524: my $ua=new LWP::UserAgent;
2525: my $request=new HTTP::Request('GET',"$remoteurl");
2526: my $response=$ua->request($request,$transname);
2527: if ($response->is_error()) {
2528: unlink($transname);
2529: my $message=$response->status_line;
2530: &logthis("<font color=\"blue\">WARNING:"
2531: ." LWP get: $message: $filename</font>");
2532: return 'unavailable';
2533: } else {
2534: if ($remoteurl!~/\.meta$/) {
2535: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2536: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2537: if ($mresponse->is_error()) {
2538: unlink($filename.'.meta');
2539: &logthis(
2540: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2541: }
2542: }
2543: rename($transname,$filename);
2544: return 'ok';
2545: }
2546: }
2547: }
2548: }
2549:
2550: # ------------------------------------------------ Get server side include body
2551: sub ssi_body {
2552: my ($filelink,%form)=@_;
2553: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2554: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2555: }
2556: my $output='';
2557: my $response;
2558: if ($filelink=~/^https?\:/) {
2559: ($output,$response)=&externalssi($filelink);
2560: } else {
2561: $filelink .= $filelink=~/\?/ ? '&' : '?';
2562: $filelink .= 'inhibitmenu=yes';
2563: ($output,$response)=&ssi($filelink,%form);
2564: }
2565: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2566: $output=~s/^.*?\<body[^\>]*\>//si;
2567: $output=~s/\<\/body\s*\>.*?$//si;
2568: if (wantarray) {
2569: return ($output, $response);
2570: } else {
2571: return $output;
2572: }
2573: }
2574:
2575: # --------------------------------------------------------- Server Side Include
2576:
2577: sub absolute_url {
2578: my ($host_name) = @_;
2579: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2580: if ($host_name eq '') {
2581: $host_name = $ENV{'SERVER_NAME'};
2582: }
2583: return $protocol.$host_name;
2584: }
2585:
2586: #
2587: # Server side include.
2588: # Parameters:
2589: # fn Possibly encrypted resource name/id.
2590: # form Hash that describes how the rendering should be done
2591: # and other things.
2592: # Returns:
2593: # Scalar context: The content of the response.
2594: # Array context: 2 element list of the content and the full response object.
2595: #
2596: sub ssi {
2597:
2598: my ($fn,%form)=@_;
2599: my $ua=new LWP::UserAgent;
2600: my $request;
2601:
2602: $form{'no_update_last_known'}=1;
2603: &Apache::lonenc::check_encrypt(\$fn);
2604: if (%form) {
2605: $request=new HTTP::Request('POST',&absolute_url().$fn);
2606: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2607: } else {
2608: $request=new HTTP::Request('GET',&absolute_url().$fn);
2609: }
2610:
2611: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2612: my $response= $ua->request($request);
2613: my $content = $response->content;
2614:
2615:
2616: if (wantarray) {
2617: return ($content, $response);
2618: } else {
2619: return $content;
2620: }
2621: }
2622:
2623: sub externalssi {
2624: my ($url)=@_;
2625: my $ua=new LWP::UserAgent;
2626: my $request=new HTTP::Request('GET',$url);
2627: my $response=$ua->request($request);
2628: if (wantarray) {
2629: return ($response->content, $response);
2630: } else {
2631: return $response->content;
2632: }
2633: }
2634:
2635: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2636:
2637: sub allowuploaded {
2638: my ($srcurl,$url)=@_;
2639: $url=&clutter(&declutter($url));
2640: my $dir=$url;
2641: $dir=~s/\/[^\/]+$//;
2642: my %httpref=();
2643: my $httpurl=&hreflocation('',$url);
2644: $httpref{'httpref.'.$httpurl}=$srcurl;
2645: &Apache::lonnet::appenv(\%httpref);
2646: }
2647:
2648: #
2649: # Determine if the current user should be able to edit a particular resource,
2650: # when viewing in course context.
2651: # (a) When viewing resource used to determine if "Edit" item is included in
2652: # Functions.
2653: # (b) When displaying folder contents in course editor, used to determine if
2654: # "Edit" link will be displayed alongside resource.
2655: #
2656: # input: 3 args -- filename (decluttered), course number and course domain.
2657: # output: array of four scalars --
2658: # $cfile -- url for file editing if editable on current server
2659: # $home -- homeserver of resource (i.e., for author if published,
2660: # or course if uploaded.).
2661: # $switchserver -- 1 if server switch will be needed.
2662: # $uploaded -- 1 if resource is a file uploaded to a course.
2663: #
2664:
2665: sub can_edit_resource {
2666: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2667: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2668: #
2669: # For aboutme pages user can only edit his/her own.
2670: #
2671: if ($resurl =~ m{^/adm/($match_domain)/($match_username)/aboutme$}) {
2672: my ($sdom,$sname) = ($1,$2);
2673: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2674: $home = $env{'user.home'};
2675: $cfile = $resurl;
2676: if ($env{'form.forceedit'}) {
2677: $forceview = 1;
2678: } else {
2679: $forceedit = 1;
2680: }
2681: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2682: } else {
2683: return;
2684: }
2685: }
2686:
2687: if ($env{'request.course.id'}) {
2688: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2689: if ($group ne '') {
2690: # if this is a group homepage or group bulletin board, check group privs
2691: my $allowed = 0;
2692: if ($resurl =~ m{^/adm/$cdom/$cnum/$group/smppg$}) {
2693: if ((&Apache::lonnet::allowed('mdg',$env{'request.course.id'}.
2694: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2695: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2696: $allowed = 1;
2697: }
2698: } elsif ($resurl =~ m{^/adm/$cdom/$cnum/\d+/bulletinboard$}) {
2699: unless ((&allowed(&Apache::lonnet::allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) ||
2700: (&allowed('cgb',$env{'request.course.id'}.$group)) || $crsedit) {
2701: $allowed = 1;
2702: }
2703: }
2704: if ($allowed) {
2705: $home=&homeserver($cnum,$cdom);
2706: if ($env{'form.forceedit'}) {
2707: $forceview = 1;
2708: } else {
2709: $forceedit = 1;
2710: }
2711: $cfile = $resurl;
2712: } else {
2713: return;
2714: }
2715: } else {
2716: #
2717: # No edit allowed where CC has switched to student role.
2718: #
2719: unless ($crsedit) {
2720: return;
2721: }
2722: }
2723: }
2724:
2725: if ($file ne '') {
2726: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2727: if (&is_course_upload($file,$cnum,$cdom)) {
2728: $uploaded = 1;
2729: $incourse = 1;
2730: if ($file =~/\.(htm|html|css|js|txt)$/) {
2731: $cfile = &hreflocation('',$file);
2732: $forceedit = 1;
2733: }
2734: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2735: $incourse = 1;
2736: if ($env{'form.forceedit'}) {
2737: $forceview = 1;
2738: } else {
2739: $forceedit = 1;
2740: }
2741: $cfile = $resurl;
2742: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2743: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2744: $incourse = 1;
2745: if ($env{'form.forceedit'}) {
2746: $forceview = 1;
2747: } else {
2748: $forceedit = 1;
2749: }
2750: $cfile = $resurl;
2751: } elsif (($resurl eq '/res/lib/templates/simpleproblem.problem')) {
2752: $incourse = 1;
2753: $cfile = $resurl.'/smpedit';
2754: } elsif ($resurl =~ /ext/) {
2755: $incourse = 1;
2756: # is external
2757: }
2758: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2759: my $template = '/res/lib/templates/simpleproblem.problem';
2760: if (&is_on_map($template)) {
2761: $incourse = 1;
2762: $forceview = 1;
2763: $cfile = $template;
2764: }
2765: }
2766: }
2767: if ($uploaded || $incourse) {
2768: $home=&homeserver($cnum,$cdom);
2769: } else {
2770: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2771: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2772: # Check that the user has permission to edit this resource
2773: my $setpriv = 1;
2774: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2775: if (defined($cfudom)) {
2776: $home=&homeserver($cfuname,$cfudom);
2777: $cfile=$file;
2778: }
2779: }
2780: if (($cfile ne '') && (!$incourse || $uploaded) &&
2781: (($home ne '') && ($home ne 'no_host'))) {
2782: my @ids=¤t_machine_ids();
2783: unless (grep(/^\Q$home\E$/,@ids)) {
2784: $switchserver=1;
2785: }
2786: }
2787: }
2788: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2789: }
2790:
2791: sub is_course_upload {
2792: my ($file,$cnum,$cdom) = @_;
2793: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2794: $uploadpath =~ s{^\/}{};
2795: if (($file =~ m{^\Q$uploadpath\E/userfiles/docs/}) ||
2796: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/docs/})) {
2797: return 1;
2798: }
2799: return;
2800: }
2801:
2802: sub in_course {
2803: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2804: if ($hideprivileged) {
2805: my $skipuser;
2806: if (&privileged($uname,$udom)) {
2807: $skipuser = 1;
2808: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2809: if ($coursehash{'nothideprivileged'}) {
2810: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2811: my $user;
2812: if ($item =~ /:/) {
2813: $user = $item;
2814: } else {
2815: $user = join(':',split(/[\@]/,$item));
2816: }
2817: if ($user eq $uname.':'.$udom) {
2818: undef($skipuser);
2819: last;
2820: }
2821: }
2822: }
2823: if ($skipuser) {
2824: return 0;
2825: }
2826: }
2827: }
2828: $type ||= 'any';
2829: if (!defined($cdom) || !defined($cnum)) {
2830: my $cid = $env{'request.course.id'};
2831: $cdom = $env{'course.'.$cid.'.domain'};
2832: $cnum = $env{'course.'.$cid.'.num'};
2833: }
2834: my $typesref;
2835: if (($type eq 'any') || ($type eq 'all')) {
2836: $typesref = ['active','previous','future'];
2837: } elsif ($type eq 'previous' || $type eq 'future') {
2838: $typesref = [$type];
2839: }
2840: my %roles = &get_my_roles($uname,$udom,'userroles',
2841: $typesref,undef,[$cdom]);
2842: my ($tmp) = keys(%roles);
2843: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
2844: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
2845: if (@course_roles > 0) {
2846: return 1;
2847: }
2848: return 0;
2849: }
2850:
2851: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2852: # input: action, courseID, current domain, intended
2853: # path to file, source of file, instruction to parse file for objects,
2854: # ref to hash for embedded objects,
2855: # ref to hash for codebase of java objects.
2856: # reference to scalar to accommodate mime type determined
2857: # from File::MMagic if $parser = parse.
2858: #
2859: # output: url to file (if action was uploaddoc),
2860: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2861: #
2862: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2863: # course.
2864: #
2865: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2866: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2867: # course's home server.
2868: #
2869: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2870: # be copied from $source (current location) to
2871: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2872: # and will then be copied to
2873: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2874: # course's home server.
2875: #
2876: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2877: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2878: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2879: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2880: # in course's home server.
2881: #
2882:
2883: sub process_coursefile {
2884: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2885: $mimetype)=@_;
2886: my $fetchresult;
2887: my $home=&homeserver($docuname,$docudom);
2888: if ($action eq 'propagate') {
2889: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2890: $home);
2891: } else {
2892: my $fpath = '';
2893: my $fname = $file;
2894: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2895: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2896: my $filepath = &build_filepath($fpath);
2897: if ($action eq 'copy') {
2898: if ($source eq '') {
2899: $fetchresult = 'no source file';
2900: return $fetchresult;
2901: } else {
2902: my $destination = $filepath.'/'.$fname;
2903: rename($source,$destination);
2904: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2905: $home);
2906: }
2907: } elsif ($action eq 'uploaddoc') {
2908: open(my $fh,'>'.$filepath.'/'.$fname);
2909: print $fh $env{'form.'.$source};
2910: close($fh);
2911: if ($parser eq 'parse') {
2912: my $mm = new File::MMagic;
2913: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2914: if ($type eq 'text/html') {
2915: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2916: unless ($parse_result eq 'ok') {
2917: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2918: }
2919: }
2920: if (ref($mimetype)) {
2921: $$mimetype = $type;
2922: }
2923: }
2924: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2925: $home);
2926: if ($fetchresult eq 'ok') {
2927: return '/uploaded/'.$fpath.'/'.$fname;
2928: } else {
2929: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2930: ' to host '.$home.': '.$fetchresult);
2931: return '/adm/notfound.html';
2932: }
2933: }
2934: }
2935: unless ( $fetchresult eq 'ok') {
2936: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2937: ' to host '.$home.': '.$fetchresult);
2938: }
2939: return $fetchresult;
2940: }
2941:
2942: sub build_filepath {
2943: my ($fpath) = @_;
2944: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2945: unless ($fpath eq '') {
2946: my @parts=split('/',$fpath);
2947: foreach my $part (@parts) {
2948: $filepath.= '/'.$part;
2949: if ((-e $filepath)!=1) {
2950: mkdir($filepath,0777);
2951: }
2952: }
2953: }
2954: return $filepath;
2955: }
2956:
2957: sub store_edited_file {
2958: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2959: my $file = $primary_url;
2960: $file =~ s#^/uploaded/$docudom/$docuname/##;
2961: my $fpath = '';
2962: my $fname = $file;
2963: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2964: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2965: my $filepath = &build_filepath($fpath);
2966: open(my $fh,'>'.$filepath.'/'.$fname);
2967: print $fh $content;
2968: close($fh);
2969: my $home=&homeserver($docuname,$docudom);
2970: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2971: $home);
2972: if ($$fetchresult eq 'ok') {
2973: return '/uploaded/'.$fpath.'/'.$fname;
2974: } else {
2975: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2976: ' to host '.$home.': '.$$fetchresult);
2977: return '/adm/notfound.html';
2978: }
2979: }
2980:
2981: sub clean_filename {
2982: my ($fname,$args)=@_;
2983: # Replace Windows backslashes by forward slashes
2984: $fname=~s/\\/\//g;
2985: if (!$args->{'keep_path'}) {
2986: # Get rid of everything but the actual filename
2987: $fname=~s/^.*\/([^\/]+)$/$1/;
2988: }
2989: # Replace spaces by underscores
2990: $fname=~s/\s+/\_/g;
2991: # Replace all other weird characters by nothing
2992: $fname=~s{[^/\w\.\-]}{}g;
2993: # Replace all .\d. sequences with _\d. so they no longer look like version
2994: # numbers
2995: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2996: return $fname;
2997: }
2998: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2999: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3000: # image with the same aspect ratio as the original, but with dimensions which do
3001: # not exceed $resizewidth and $resizeheight.
3002:
3003: sub resizeImage {
3004: my ($img_path,$resizewidth,$resizeheight) = @_;
3005: my $ima = Image::Magick->new;
3006: my $resized;
3007: if (-e $img_path) {
3008: $ima->Read($img_path);
3009: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3010: my $width = $ima->Get('width');
3011: my $height = $ima->Get('height');
3012: if ($width > $resizewidth) {
3013: my $factor = $width/$resizewidth;
3014: my $newheight = $height/$factor;
3015: $ima->Scale(width=>$resizewidth,height=>$newheight);
3016: $resized = 1;
3017: }
3018: }
3019: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3020: my $width = $ima->Get('width');
3021: my $height = $ima->Get('height');
3022: if ($height > $resizeheight) {
3023: my $factor = $height/$resizeheight;
3024: my $newwidth = $width/$factor;
3025: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3026: $resized = 1;
3027: }
3028: }
3029: if ($resized) {
3030: $ima->Write($img_path);
3031: }
3032: }
3033: return;
3034: }
3035:
3036: # --------------- Take an uploaded file and put it into the userfiles directory
3037: # input: $formname - the contents of the file are in $env{"form.$formname"}
3038: # the desired filename is in $env{"form.$formname.filename"}
3039: # $context - possible values: coursedoc, existingfile, overwrite,
3040: # canceloverwrite, or ''.
3041: # if 'coursedoc': upload to the current course
3042: # if 'existingfile': write file to tmp/overwrites directory
3043: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3044: # $context is passed as argument to &finishuserfileupload
3045: # $subdir - directory in userfile to store the file into
3046: # $parser - instruction to parse file for objects ($parser = parse)
3047: # $allfiles - reference to hash for embedded objects
3048: # $codebase - reference to hash for codebase of java objects
3049: # $desuname - username for permanent storage of uploaded file
3050: # $dsetudom - domain for permanaent storage of uploaded file
3051: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3052: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3053: # $resizewidth - width (pixels) to which to resize uploaded image
3054: # $resizeheight - height (pixels) to which to resize uploaded image
3055: # $mimetype - reference to scalar to accommodate mime type determined
3056: # from File::MMagic.
3057: #
3058: # output: url of file in userspace, or error: <message>
3059: # or /adm/notfound.html if failure to upload occurse
3060:
3061: sub userfileupload {
3062: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3063: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3064: if (!defined($subdir)) { $subdir='unknown'; }
3065: my $fname=$env{'form.'.$formname.'.filename'};
3066: $fname=&clean_filename($fname);
3067: # See if there is anything left
3068: unless ($fname) { return 'error: no uploaded file'; }
3069: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3070: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3071: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3072: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3073: my $now = time;
3074: my $filepath;
3075: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3076: $filepath = 'tmp/helprequests/'.$now;
3077: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3078: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3079: '_'.$env{'user.domain'}.'/pending';
3080: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3081: my ($docuname,$docudom);
3082: if ($destudom) {
3083: $docudom = $destudom;
3084: } else {
3085: $docudom = $env{'user.domain'};
3086: }
3087: if ($destuname) {
3088: $docuname = $destuname;
3089: } else {
3090: $docuname = $env{'user.name'};
3091: }
3092: if (exists($env{'form.group'})) {
3093: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3094: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3095: }
3096: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3097: if ($context eq 'canceloverwrite') {
3098: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3099: if (-e $tempfile) {
3100: my @info = stat($tempfile);
3101: if ($info[9] eq $env{'form.timestamp'}) {
3102: unlink($tempfile);
3103: }
3104: }
3105: return;
3106: }
3107: }
3108: # Create the directory if not present
3109: my @parts=split(/\//,$filepath);
3110: my $fullpath = $perlvar{'lonDaemons'};
3111: for (my $i=0;$i<@parts;$i++) {
3112: $fullpath .= '/'.$parts[$i];
3113: if ((-e $fullpath)!=1) {
3114: mkdir($fullpath,0777);
3115: }
3116: }
3117: open(my $fh,'>'.$fullpath.'/'.$fname);
3118: print $fh $env{'form.'.$formname};
3119: close($fh);
3120: if ($context eq 'existingfile') {
3121: my @info = stat($fullpath.'/'.$fname);
3122: return ($fullpath.'/'.$fname,$info[9]);
3123: } else {
3124: return $fullpath.'/'.$fname;
3125: }
3126: }
3127: if ($subdir eq 'scantron') {
3128: $fname = 'scantron_orig_'.$fname;
3129: } else {
3130: $fname="$subdir/$fname";
3131: }
3132: if ($context eq 'coursedoc') {
3133: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3134: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3135: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3136: return &finishuserfileupload($docuname,$docudom,
3137: $formname,$fname,$parser,$allfiles,
3138: $codebase,$thumbwidth,$thumbheight,
3139: $resizewidth,$resizeheight,$context,$mimetype);
3140: } else {
3141: $fname=$env{'form.folder'}.'/'.$fname;
3142: return &process_coursefile('uploaddoc',$docuname,$docudom,
3143: $fname,$formname,$parser,
3144: $allfiles,$codebase,$mimetype);
3145: }
3146: } elsif (defined($destuname)) {
3147: my $docuname=$destuname;
3148: my $docudom=$destudom;
3149: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3150: $parser,$allfiles,$codebase,
3151: $thumbwidth,$thumbheight,
3152: $resizewidth,$resizeheight,$context,$mimetype);
3153: } else {
3154: my $docuname=$env{'user.name'};
3155: my $docudom=$env{'user.domain'};
3156: if (exists($env{'form.group'})) {
3157: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3158: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3159: }
3160: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3161: $parser,$allfiles,$codebase,
3162: $thumbwidth,$thumbheight,
3163: $resizewidth,$resizeheight,$context,$mimetype);
3164: }
3165: }
3166:
3167: sub finishuserfileupload {
3168: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3169: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3170: my $path=$docudom.'/'.$docuname.'/';
3171: my $filepath=$perlvar{'lonDocRoot'};
3172:
3173: my ($fnamepath,$file,$fetchthumb);
3174: $file=$fname;
3175: if ($fname=~m|/|) {
3176: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3177: $path.=$fnamepath.'/';
3178: }
3179: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3180: my $count;
3181: for ($count=4;$count<=$#parts;$count++) {
3182: $filepath.="/$parts[$count]";
3183: if ((-e $filepath)!=1) {
3184: mkdir($filepath,0777);
3185: }
3186: }
3187:
3188: # Save the file
3189: {
3190: if (!open(FH,'>'.$filepath.'/'.$file)) {
3191: &logthis('Failed to create '.$filepath.'/'.$file);
3192: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3193: return '/adm/notfound.html';
3194: }
3195: if ($context eq 'overwrite') {
3196: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3197: my $target = $filepath.'/'.$file;
3198: if (-e $source) {
3199: my @info = stat($source);
3200: if ($info[9] eq $env{'form.timestamp'}) {
3201: unless (&File::Copy::move($source,$target)) {
3202: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3203: return "Moving from $source failed";
3204: }
3205: } else {
3206: return "Temporary file: $source had unexpected date/time for last modification";
3207: }
3208: } else {
3209: return "Temporary file: $source missing";
3210: }
3211: } elsif (!print FH ($env{'form.'.$formname})) {
3212: &logthis('Failed to write to '.$filepath.'/'.$file);
3213: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3214: return '/adm/notfound.html';
3215: }
3216: close(FH);
3217: if ($resizewidth && $resizeheight) {
3218: my $mm = new File::MMagic;
3219: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3220: if ($mime_type =~ m{^image/}) {
3221: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3222: }
3223: }
3224: }
3225: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3226: if (ref($mimetype)) {
3227: if ($$mimetype eq '') {
3228: my $mm = new File::MMagic;
3229: my $type = $mm->checktype_filename($filepath.'/'.$file);
3230: $$mimetype = $type;
3231: }
3232: }
3233: }
3234: if ($parser eq 'parse') {
3235: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3236: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3237: $allfiles,$codebase);
3238: unless ($parse_result eq 'ok') {
3239: &logthis('Failed to parse '.$filepath.$file.
3240: ' for embedded media: '.$parse_result);
3241: }
3242: }
3243: }
3244: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3245: my $input = $filepath.'/'.$file;
3246: my $output = $filepath.'/'.'tn-'.$file;
3247: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3248: system("convert -sample $thumbsize $input $output");
3249: if (-e $filepath.'/'.'tn-'.$file) {
3250: $fetchthumb = 1;
3251: }
3252: }
3253:
3254: # Notify homeserver to grep it
3255: #
3256: my $docuhome=&homeserver($docuname,$docudom);
3257: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3258: if ($fetchresult eq 'ok') {
3259: if ($fetchthumb) {
3260: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3261: if ($thumbresult ne 'ok') {
3262: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3263: $docuhome.': '.$thumbresult);
3264: }
3265: }
3266: #
3267: # Return the URL to it
3268: return '/uploaded/'.$path.$file;
3269: } else {
3270: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3271: ': '.$fetchresult);
3272: return '/adm/notfound.html';
3273: }
3274: }
3275:
3276: sub extract_embedded_items {
3277: my ($fullpath,$allfiles,$codebase,$content) = @_;
3278: my @state = ();
3279: my (%lastids,%related,%shockwave,%flashvars);
3280: my %javafiles = (
3281: codebase => '',
3282: code => '',
3283: archive => ''
3284: );
3285: my %mediafiles = (
3286: src => '',
3287: movie => '',
3288: );
3289: my $p;
3290: if ($content) {
3291: $p = HTML::LCParser->new($content);
3292: } else {
3293: $p = HTML::LCParser->new($fullpath);
3294: }
3295: while (my $t=$p->get_token()) {
3296: if ($t->[0] eq 'S') {
3297: my ($tagname, $attr) = ($t->[1],$t->[2]);
3298: push(@state, $tagname);
3299: if (lc($tagname) eq 'allow') {
3300: &add_filetype($allfiles,$attr->{'src'},'src');
3301: }
3302: if (lc($tagname) eq 'img') {
3303: &add_filetype($allfiles,$attr->{'src'},'src');
3304: }
3305: if (lc($tagname) eq 'a') {
3306: &add_filetype($allfiles,$attr->{'href'},'href');
3307: }
3308: if (lc($tagname) eq 'script') {
3309: my $src;
3310: if ($attr->{'archive'} =~ /\.jar$/i) {
3311: &add_filetype($allfiles,$attr->{'archive'},'archive');
3312: } else {
3313: if ($attr->{'src'} ne '') {
3314: $src = $attr->{'src'};
3315: &add_filetype($allfiles,$src,'src');
3316: }
3317: }
3318: my $text = $p->get_trimmed_text();
3319: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3320: my @swfargs = split(/,/,$1);
3321: foreach my $item (@swfargs) {
3322: $item =~ s/["']//g;
3323: $item =~ s/^\s+//;
3324: $item =~ s/\s+$//;
3325: }
3326: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3327: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3328: push(@{$related{$swfargs[0]}},$swfargs[2]);
3329: } else {
3330: $related{$swfargs[0]} = [$swfargs[2]];
3331: }
3332: }
3333: }
3334: }
3335: if (lc($tagname) eq 'link') {
3336: if (lc($attr->{'rel'}) eq 'stylesheet') {
3337: &add_filetype($allfiles,$attr->{'href'},'href');
3338: }
3339: }
3340: if (lc($tagname) eq 'object' ||
3341: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3342: foreach my $item (keys(%javafiles)) {
3343: $javafiles{$item} = '';
3344: }
3345: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3346: $lastids{lc($tagname)} = $attr->{'id'};
3347: }
3348: }
3349: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3350: my $name = lc($attr->{'name'});
3351: foreach my $item (keys(%javafiles)) {
3352: if ($name eq $item) {
3353: $javafiles{$item} = $attr->{'value'};
3354: last;
3355: }
3356: }
3357: my $pathfrom;
3358: foreach my $item (keys(%mediafiles)) {
3359: if ($name eq $item) {
3360: $pathfrom = $attr->{'value'};
3361: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3362: &add_filetype($allfiles,$pathfrom,$name);
3363: last;
3364: }
3365: }
3366: if ($name eq 'flashvars') {
3367: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3368: }
3369: if ($pathfrom ne '') {
3370: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3371: $pathfrom);
3372: }
3373: }
3374: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3375: foreach my $item (keys(%javafiles)) {
3376: if ($attr->{$item}) {
3377: $javafiles{$item} = $attr->{$item};
3378: last;
3379: }
3380: }
3381: foreach my $item (keys(%mediafiles)) {
3382: if ($attr->{$item}) {
3383: &add_filetype($allfiles,$attr->{$item},$item);
3384: last;
3385: }
3386: }
3387: if (lc($tagname) eq 'embed') {
3388: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3389: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3390: $attr->{'src'});
3391: }
3392: }
3393: }
3394: if ($t->[4] =~ m{/>$}) {
3395: pop(@state);
3396: }
3397: } elsif ($t->[0] eq 'E') {
3398: my ($tagname) = ($t->[1]);
3399: if ($javafiles{'codebase'} ne '') {
3400: $javafiles{'codebase'} .= '/';
3401: }
3402: if (lc($tagname) eq 'applet' ||
3403: lc($tagname) eq 'object' ||
3404: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3405: ) {
3406: foreach my $item (keys(%javafiles)) {
3407: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3408: my $file=$javafiles{'codebase'}.$javafiles{$item};
3409: &add_filetype($allfiles,$file,$item);
3410: }
3411: }
3412: }
3413: pop @state;
3414: }
3415: }
3416: foreach my $id (sort(keys(%flashvars))) {
3417: if ($shockwave{$id} ne '') {
3418: my @pairs = split(/\&/,$flashvars{$id});
3419: foreach my $pair (@pairs) {
3420: my ($key,$value) = split(/\=/,$pair);
3421: if ($key eq 'thumb') {
3422: &add_filetype($allfiles,$value,$key);
3423: } elsif ($key eq 'content') {
3424: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3425: my ($ext) = ($value =~ /\.([^.]+)$/);
3426: if ($ext ne '') {
3427: &add_filetype($allfiles,$path.$value,$ext);
3428: }
3429: }
3430: }
3431: }
3432: }
3433: return 'ok';
3434: }
3435:
3436: sub add_filetype {
3437: my ($allfiles,$file,$type)=@_;
3438: if (exists($allfiles->{$file})) {
3439: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3440: push(@{$allfiles->{$file}}, &escape($type));
3441: }
3442: } else {
3443: @{$allfiles->{$file}} = (&escape($type));
3444: }
3445: }
3446:
3447: sub embedded_dependency {
3448: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3449: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3450: if (($identifier ne '') &&
3451: (ref($related->{$identifier}) eq 'ARRAY') &&
3452: ($pathfrom ne '')) {
3453: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3454: foreach my $dep (@{$related->{$identifier}}) {
3455: &add_filetype($allfiles,$path.$dep,'object');
3456: }
3457: }
3458: }
3459: return;
3460: }
3461:
3462: sub removeuploadedurl {
3463: my ($url)=@_;
3464: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3465: return &removeuserfile($uname,$udom,$fname);
3466: }
3467:
3468: sub removeuserfile {
3469: my ($docuname,$docudom,$fname)=@_;
3470: my $home=&homeserver($docuname,$docudom);
3471: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3472: if ($result eq 'ok') {
3473: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3474: my $metafile = $fname.'.meta';
3475: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3476: my $url = "/uploaded/$docudom/$docuname/$fname";
3477: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3478: my $sqlresult =
3479: &update_portfolio_table($docuname,$docudom,$file,
3480: 'portfolio_metadata',$group,
3481: 'delete');
3482: }
3483: }
3484: return $result;
3485: }
3486:
3487: sub mkdiruserfile {
3488: my ($docuname,$docudom,$dir)=@_;
3489: my $home=&homeserver($docuname,$docudom);
3490: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3491: }
3492:
3493: sub renameuserfile {
3494: my ($docuname,$docudom,$old,$new)=@_;
3495: my $home=&homeserver($docuname,$docudom);
3496: my $result = &reply("renameuserfile:$docudom:$docuname:".
3497: &escape("$old").':'.&escape("$new"),$home);
3498: if ($result eq 'ok') {
3499: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3500: my $oldmeta = $old.'.meta';
3501: my $newmeta = $new.'.meta';
3502: my $metaresult =
3503: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3504: my $url = "/uploaded/$docudom/$docuname/$old";
3505: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3506: my $sqlresult =
3507: &update_portfolio_table($docuname,$docudom,$file,
3508: 'portfolio_metadata',$group,
3509: 'delete');
3510: }
3511: }
3512: return $result;
3513: }
3514:
3515: # ------------------------------------------------------------------------- Log
3516:
3517: sub log {
3518: my ($dom,$nam,$hom,$what)=@_;
3519: return critical("log:$dom:$nam:$what",$hom);
3520: }
3521:
3522: # ------------------------------------------------------------------ Course Log
3523: #
3524: # This routine flushes several buffers of non-mission-critical nature
3525: #
3526:
3527: sub flushcourselogs {
3528: &logthis('Flushing log buffers');
3529: #
3530: # course logs
3531: # This is a log of all transactions in a course, which can be used
3532: # for data mining purposes
3533: #
3534: # It also collects the courseid database, which lists last transaction
3535: # times and course titles for all courseids
3536: #
3537: my %courseidbuffer=();
3538: foreach my $crsid (keys(%courselogs)) {
3539: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3540: &escape($courselogs{$crsid}),
3541: $coursehombuf{$crsid}) eq 'ok') {
3542: delete $courselogs{$crsid};
3543: } else {
3544: &logthis('Failed to flush log buffer for '.$crsid);
3545: if (length($courselogs{$crsid})>40000) {
3546: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3547: " exceeded maximum size, deleting.</font>");
3548: delete $courselogs{$crsid};
3549: }
3550: }
3551: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3552: 'description' => $coursedescrbuf{$crsid},
3553: 'inst_code' => $courseinstcodebuf{$crsid},
3554: 'type' => $coursetypebuf{$crsid},
3555: 'owner' => $courseownerbuf{$crsid},
3556: };
3557: }
3558: #
3559: # Write course id database (reverse lookup) to homeserver of courses
3560: # Is used in pickcourse
3561: #
3562: foreach my $crs_home (keys(%courseidbuffer)) {
3563: my $response = &courseidput(&host_domain($crs_home),
3564: $courseidbuffer{$crs_home},
3565: $crs_home,'timeonly');
3566: }
3567: #
3568: # File accesses
3569: # Writes to the dynamic metadata of resources to get hit counts, etc.
3570: #
3571: foreach my $entry (keys(%accesshash)) {
3572: if ($entry =~ /___count$/) {
3573: my ($dom,$name);
3574: ($dom,$name,undef)=
3575: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3576: if (! defined($dom) || $dom eq '' ||
3577: ! defined($name) || $name eq '') {
3578: my $cid = $env{'request.course.id'};
3579: $dom = $env{'request.'.$cid.'.domain'};
3580: $name = $env{'request.'.$cid.'.num'};
3581: }
3582: my $value = $accesshash{$entry};
3583: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3584: my %temphash=($url => $value);
3585: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3586: if ($result eq 'ok') {
3587: delete $accesshash{$entry};
3588: }
3589: } else {
3590: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3591: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3592: my %temphash=($entry => $accesshash{$entry});
3593: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3594: delete $accesshash{$entry};
3595: }
3596: }
3597: }
3598: #
3599: # Roles
3600: # Reverse lookup of user roles for course faculty/staff and co-authorship
3601: #
3602: foreach my $entry (keys(%userrolehash)) {
3603: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3604: split(/\:/,$entry);
3605: if (&Apache::lonnet::put('nohist_userroles',
3606: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3607: $rudom,$runame) eq 'ok') {
3608: delete $userrolehash{$entry};
3609: }
3610: }
3611: #
3612: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3613: #
3614: my %domrolebuffer = ();
3615: foreach my $entry (keys(%domainrolehash)) {
3616: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3617: if ($domrolebuffer{$rudom}) {
3618: $domrolebuffer{$rudom}.='&'.&escape($entry).
3619: '='.&escape($domainrolehash{$entry});
3620: } else {
3621: $domrolebuffer{$rudom}.=&escape($entry).
3622: '='.&escape($domainrolehash{$entry});
3623: }
3624: delete $domainrolehash{$entry};
3625: }
3626: foreach my $dom (keys(%domrolebuffer)) {
3627: my %servers = &get_servers($dom,'library');
3628: foreach my $tryserver (keys(%servers)) {
3629: unless (&reply('domroleput:'.$dom.':'.
3630: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3631: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3632: }
3633: }
3634: }
3635: $dumpcount++;
3636: }
3637:
3638: sub courselog {
3639: my $what=shift;
3640: $what=time.':'.$what;
3641: unless ($env{'request.course.id'}) { return ''; }
3642: $coursedombuf{$env{'request.course.id'}}=
3643: $env{'course.'.$env{'request.course.id'}.'.domain'};
3644: $coursenumbuf{$env{'request.course.id'}}=
3645: $env{'course.'.$env{'request.course.id'}.'.num'};
3646: $coursehombuf{$env{'request.course.id'}}=
3647: $env{'course.'.$env{'request.course.id'}.'.home'};
3648: $coursedescrbuf{$env{'request.course.id'}}=
3649: $env{'course.'.$env{'request.course.id'}.'.description'};
3650: $courseinstcodebuf{$env{'request.course.id'}}=
3651: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3652: $courseownerbuf{$env{'request.course.id'}}=
3653: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3654: $coursetypebuf{$env{'request.course.id'}}=
3655: $env{'course.'.$env{'request.course.id'}.'.type'};
3656: if (defined $courselogs{$env{'request.course.id'}}) {
3657: $courselogs{$env{'request.course.id'}}.='&'.$what;
3658: } else {
3659: $courselogs{$env{'request.course.id'}}.=$what;
3660: }
3661: if (length($courselogs{$env{'request.course.id'}})>4048) {
3662: &flushcourselogs();
3663: }
3664: }
3665:
3666: sub courseacclog {
3667: my $fnsymb=shift;
3668: unless ($env{'request.course.id'}) { return ''; }
3669: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3670: if ($fnsymb=~/$LONCAPA::assess_re/) {
3671: $what.=':POST';
3672: # FIXME: Probably ought to escape things....
3673: foreach my $key (keys(%env)) {
3674: if ($key=~/^form\.(.*)/) {
3675: my $formitem = $1;
3676: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3677: $what.=':'.$formitem.'='.$env{$key};
3678: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3679: $what.=':'.$formitem.'='.$env{$key};
3680: }
3681: }
3682: }
3683: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3684: # FIXME: We should not be depending on a form parameter that someone
3685: # editing lonsearchcat.pm might change in the future.
3686: if ($env{'form.phase'} eq 'course_search') {
3687: $what.= ':POST';
3688: # FIXME: Probably ought to escape things....
3689: foreach my $element ('courseexp','crsfulltext','crsrelated',
3690: 'crsdiscuss') {
3691: $what.=':'.$element.'='.$env{'form.'.$element};
3692: }
3693: }
3694: }
3695: &courselog($what);
3696: }
3697:
3698: sub countacc {
3699: my $url=&declutter(shift);
3700: return if (! defined($url) || $url eq '');
3701: unless ($env{'request.course.id'}) { return ''; }
3702: #
3703: # Mark that this url was used in this course
3704: #
3705: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3706: #
3707: # Increase the access count for this resource in this child process
3708: #
3709: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3710: $accesshash{$key}++;
3711: }
3712:
3713: sub linklog {
3714: my ($from,$to)=@_;
3715: $from=&declutter($from);
3716: $to=&declutter($to);
3717: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3718: $accesshash{$to.'___'.$from.'___goto'}=1;
3719: }
3720:
3721: sub statslog {
3722: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3723: if ($users<2) { return; }
3724: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3725: 'course' => $env{'request.course.id'},
3726: 'sections' => '"all"',
3727: 'num_students' => $users,
3728: 'part' => $part,
3729: 'symb' => $symb,
3730: 'mean_tries' => $av_attempts,
3731: 'deg_of_diff' => $degdiff});
3732: foreach my $key (keys(%dynstore)) {
3733: $accesshash{$key}=$dynstore{$key};
3734: }
3735: }
3736:
3737: sub userrolelog {
3738: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3739: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3740: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3741: $userrolehash
3742: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3743: =$tend.':'.$tstart;
3744: }
3745: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3746: $userrolehash
3747: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3748: =$tend.':'.$tstart;
3749: }
3750: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3751: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3752: $domainrolehash
3753: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3754: = $tend.':'.$tstart;
3755: }
3756: }
3757:
3758: sub courserolelog {
3759: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3760: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3761: my $cdom = $1;
3762: my $cnum = $2;
3763: my $sec = $3;
3764: my $namespace = 'rolelog';
3765: my %storehash = (
3766: role => $trole,
3767: start => $tstart,
3768: end => $tend,
3769: selfenroll => $selfenroll,
3770: context => $context,
3771: );
3772: if ($trole eq 'gr') {
3773: $namespace = 'groupslog';
3774: $storehash{'group'} = $sec;
3775: } else {
3776: $storehash{'section'} = $sec;
3777: }
3778: &write_log('course',$namespace,\%storehash,$delflag,$username,
3779: $domain,$cnum,$cdom);
3780: if (($trole ne 'st') || ($sec ne '')) {
3781: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3782: }
3783: }
3784: return;
3785: }
3786:
3787: sub domainrolelog {
3788: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3789: if ($area =~ m{^/($match_domain)/$}) {
3790: my $cdom = $1;
3791: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3792: my $namespace = 'rolelog';
3793: my %storehash = (
3794: role => $trole,
3795: start => $tstart,
3796: end => $tend,
3797: context => $context,
3798: );
3799: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3800: $domain,$domconfiguser,$cdom);
3801: }
3802: return;
3803:
3804: }
3805:
3806: sub coauthorrolelog {
3807: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3808: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3809: my $audom = $1;
3810: my $auname = $2;
3811: my $namespace = 'rolelog';
3812: my %storehash = (
3813: role => $trole,
3814: start => $tstart,
3815: end => $tend,
3816: context => $context,
3817: );
3818: &write_log('author',$namespace,\%storehash,$delflag,$username,
3819: $domain,$auname,$audom);
3820: }
3821: return;
3822: }
3823:
3824: sub get_course_adv_roles {
3825: my ($cid,$codes) = @_;
3826: $cid=$env{'request.course.id'} unless (defined($cid));
3827: my %coursehash=&coursedescription($cid);
3828: my $crstype = &Apache::loncommon::course_type($cid);
3829: my %nothide=();
3830: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3831: if ($user !~ /:/) {
3832: $nothide{join(':',split(/[\@]/,$user))}=1;
3833: } else {
3834: $nothide{$user}=1;
3835: }
3836: }
3837: my %returnhash=();
3838: my %dumphash=
3839: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3840: my $now=time;
3841: my %privileged;
3842: foreach my $entry (keys(%dumphash)) {
3843: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3844: if (($tstart) && ($tstart<0)) { next; }
3845: if (($tend) && ($tend<$now)) { next; }
3846: if (($tstart) && ($now<$tstart)) { next; }
3847: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3848: if ($username eq '' || $domain eq '') { next; }
3849: unless (ref($privileged{$domain}) eq 'HASH') {
3850: my %dompersonnel =
3851: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3852: $privileged{$domain} = {};
3853: foreach my $server (keys(%dompersonnel)) {
3854: if (ref($dompersonnel{$server}) eq 'HASH') {
3855: foreach my $user (keys(%{$dompersonnel{$server}})) {
3856: my ($trole,$uname,$udom) = split(/:/,$user);
3857: $privileged{$udom}{$uname} = 1;
3858: }
3859: }
3860: }
3861: }
3862: if ((exists($privileged{$domain}{$username})) &&
3863: (!$nothide{$username.':'.$domain})) { next; }
3864: if ($role eq 'cr') { next; }
3865: if ($codes) {
3866: if ($section) { $role .= ':'.$section; }
3867: if ($returnhash{$role}) {
3868: $returnhash{$role}.=','.$username.':'.$domain;
3869: } else {
3870: $returnhash{$role}=$username.':'.$domain;
3871: }
3872: } else {
3873: my $key=&plaintext($role,$crstype);
3874: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3875: if ($returnhash{$key}) {
3876: $returnhash{$key}.=','.$username.':'.$domain;
3877: } else {
3878: $returnhash{$key}=$username.':'.$domain;
3879: }
3880: }
3881: }
3882: return %returnhash;
3883: }
3884:
3885: sub get_my_roles {
3886: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3887: unless (defined($uname)) { $uname=$env{'user.name'}; }
3888: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3889: my (%dumphash,%nothide);
3890: if ($context eq 'userroles') {
3891: %dumphash = &dump('roles',$udom,$uname);
3892: } else {
3893: %dumphash=
3894: &dump('nohist_userroles',$udom,$uname);
3895: if ($hidepriv) {
3896: my %coursehash=&coursedescription($udom.'_'.$uname);
3897: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3898: if ($user !~ /:/) {
3899: $nothide{join(':',split(/[\@]/,$user))} = 1;
3900: } else {
3901: $nothide{$user} = 1;
3902: }
3903: }
3904: }
3905: }
3906: my %returnhash=();
3907: my $now=time;
3908: my %privileged;
3909: foreach my $entry (keys(%dumphash)) {
3910: my ($role,$tend,$tstart);
3911: if ($context eq 'userroles') {
3912: next if ($entry =~ /^rolesdef/);
3913: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3914: } else {
3915: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3916: }
3917: if (($tstart) && ($tstart<0)) { next; }
3918: my $status = 'active';
3919: if (($tend) && ($tend<=$now)) {
3920: $status = 'previous';
3921: }
3922: if (($tstart) && ($now<$tstart)) {
3923: $status = 'future';
3924: }
3925: if (ref($types) eq 'ARRAY') {
3926: if (!grep(/^\Q$status\E$/,@{$types})) {
3927: next;
3928: }
3929: } else {
3930: if ($status ne 'active') {
3931: next;
3932: }
3933: }
3934: my ($rolecode,$username,$domain,$section,$area);
3935: if ($context eq 'userroles') {
3936: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
3937: (undef,$domain,$username,$section) = split(/\//,$area);
3938: } else {
3939: ($role,$username,$domain,$section) = split(/\:/,$entry);
3940: }
3941: if (ref($roledoms) eq 'ARRAY') {
3942: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3943: next;
3944: }
3945: }
3946: if (ref($roles) eq 'ARRAY') {
3947: if (!grep(/^\Q$role\E$/,@{$roles})) {
3948: if ($role =~ /^cr\//) {
3949: if (!grep(/^cr$/,@{$roles})) {
3950: next;
3951: }
3952: } elsif ($role =~ /^gr\//) {
3953: if (!grep(/^gr$/,@{$roles})) {
3954: next;
3955: }
3956: } else {
3957: next;
3958: }
3959: }
3960: }
3961: if ($hidepriv) {
3962: if ($context eq 'userroles') {
3963: if ((&privileged($username,$domain)) &&
3964: (!$nothide{$username.':'.$domain})) {
3965: next;
3966: }
3967: } else {
3968: unless (ref($privileged{$domain}) eq 'HASH') {
3969: my %dompersonnel =
3970: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3971: $privileged{$domain} = {};
3972: if (keys(%dompersonnel)) {
3973: foreach my $server (keys(%dompersonnel)) {
3974: if (ref($dompersonnel{$server}) eq 'HASH') {
3975: foreach my $user (keys(%{$dompersonnel{$server}})) {
3976: my ($trole,$uname,$udom) = split(/:/,$user);
3977: $privileged{$udom}{$uname} = $trole;
3978: }
3979: }
3980: }
3981: }
3982: }
3983: if (exists($privileged{$domain}{$username})) {
3984: if (!$nothide{$username.':'.$domain}) {
3985: next;
3986: }
3987: }
3988: }
3989: }
3990: if ($withsec) {
3991: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3992: $tstart.':'.$tend;
3993: } else {
3994: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3995: }
3996: }
3997: return %returnhash;
3998: }
3999:
4000: # ----------------------------------------------------- Frontpage Announcements
4001: #
4002: #
4003:
4004: sub postannounce {
4005: my ($server,$text)=@_;
4006: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4007: unless ($text=~/\w/) { $text=''; }
4008: return &reply('setannounce:'.&escape($text),$server);
4009: }
4010:
4011: sub getannounce {
4012:
4013: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4014: my $announcement='';
4015: while (my $line = <$fh>) { $announcement .= $line; }
4016: close($fh);
4017: if ($announcement=~/\w/) {
4018: return
4019: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4020: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4021: } else {
4022: return '';
4023: }
4024: } else {
4025: return '';
4026: }
4027: }
4028:
4029: # ---------------------------------------------------------- Course ID routines
4030: # Deal with domain's nohist_courseid.db files
4031: #
4032:
4033: sub courseidput {
4034: my ($domain,$storehash,$coursehome,$caller) = @_;
4035: return unless (ref($storehash) eq 'HASH');
4036: my $outcome;
4037: if ($caller eq 'timeonly') {
4038: my $cids = '';
4039: foreach my $item (keys(%$storehash)) {
4040: $cids.=&escape($item).'&';
4041: }
4042: $cids=~s/\&$//;
4043: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4044: $coursehome);
4045: } else {
4046: my $items = '';
4047: foreach my $item (keys(%$storehash)) {
4048: $items.= &escape($item).'='.
4049: &freeze_escape($$storehash{$item}).'&';
4050: }
4051: $items=~s/\&$//;
4052: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4053: $coursehome);
4054: }
4055: if ($outcome eq 'unknown_cmd') {
4056: my $what;
4057: foreach my $cid (keys(%$storehash)) {
4058: $what .= &escape($cid).'=';
4059: foreach my $item ('description','inst_code','owner','type') {
4060: $what .= &escape($storehash->{$cid}{$item}).':';
4061: }
4062: $what =~ s/\:$/&/;
4063: }
4064: $what =~ s/\&$//;
4065: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4066: } else {
4067: return $outcome;
4068: }
4069: }
4070:
4071: sub courseiddump {
4072: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4073: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4074: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4075: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
4076: my $as_hash = 1;
4077: my %returnhash;
4078: if (!$domfilter) { $domfilter=''; }
4079: my %libserv = &all_library();
4080: foreach my $tryserver (keys(%libserv)) {
4081: if ( ( $hostidflag == 1
4082: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4083: || (!defined($hostidflag)) ) {
4084:
4085: if (($domfilter eq '') ||
4086: (&host_domain($tryserver) eq $domfilter)) {
4087: my $rep;
4088: if (grep { $_ eq $tryserver } current_machine_ids()) {
4089: $rep = LONCAPA::Lond::dump_course_id_handler(
4090: join(":", (&host_domain($tryserver), $sincefilter,
4091: &escape($descfilter), &escape($instcodefilter),
4092: &escape($ownerfilter), &escape($coursefilter),
4093: &escape($typefilter), &escape($regexp_ok),
4094: $as_hash, &escape($selfenrollonly),
4095: &escape($catfilter), $showhidden, $caller,
4096: &escape($cloner), &escape($cc_clone), $cloneonly,
4097: &escape($createdbefore), &escape($createdafter),
4098: &escape($creationcontext), $domcloner)));
4099: } else {
4100: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4101: $sincefilter.':'.&escape($descfilter).':'.
4102: &escape($instcodefilter).':'.&escape($ownerfilter).
4103: ':'.&escape($coursefilter).':'.&escape($typefilter).
4104: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4105: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4106: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4107: &escape($cc_clone).':'.$cloneonly.':'.
4108: &escape($createdbefore).':'.&escape($createdafter).':'.
4109: &escape($creationcontext).':'.$domcloner,
4110: $tryserver);
4111: }
4112:
4113: my @pairs=split(/\&/,$rep);
4114: foreach my $item (@pairs) {
4115: my ($key,$value)=split(/\=/,$item,2);
4116: $key = &unescape($key);
4117: next if ($key =~ /^error: 2 /);
4118: my $result = &thaw_unescape($value);
4119: if (ref($result) eq 'HASH') {
4120: $returnhash{$key}=$result;
4121: } else {
4122: my @responses = split(/:/,$value);
4123: my @items = ('description','inst_code','owner','type');
4124: for (my $i=0; $i<@responses; $i++) {
4125: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4126: }
4127: }
4128: }
4129: }
4130: }
4131: }
4132: return %returnhash;
4133: }
4134:
4135: sub courselastaccess {
4136: my ($cdom,$cnum,$hostidref) = @_;
4137: my %returnhash;
4138: if ($cdom && $cnum) {
4139: my $chome = &homeserver($cnum,$cdom);
4140: if ($chome ne 'no_host') {
4141: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4142: &extract_lastaccess(\%returnhash,$rep);
4143: }
4144: } else {
4145: if (!$cdom) { $cdom=''; }
4146: my %libserv = &all_library();
4147: foreach my $tryserver (keys(%libserv)) {
4148: if (ref($hostidref) eq 'ARRAY') {
4149: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4150: }
4151: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4152: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4153: &extract_lastaccess(\%returnhash,$rep);
4154: }
4155: }
4156: }
4157: return %returnhash;
4158: }
4159:
4160: sub extract_lastaccess {
4161: my ($returnhash,$rep) = @_;
4162: if (ref($returnhash) eq 'HASH') {
4163: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4164: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4165: $rep eq '') {
4166: my @pairs=split(/\&/,$rep);
4167: foreach my $item (@pairs) {
4168: my ($key,$value)=split(/\=/,$item,2);
4169: $key = &unescape($key);
4170: next if ($key =~ /^error: 2 /);
4171: $returnhash->{$key} = &thaw_unescape($value);
4172: }
4173: }
4174: }
4175: return;
4176: }
4177:
4178: # ---------------------------------------------------------- DC e-mail
4179:
4180: sub dcmailput {
4181: my ($domain,$msgid,$message,$server)=@_;
4182: my $status = &Apache::lonnet::critical(
4183: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4184: &escape($message),$server);
4185: return $status;
4186: }
4187:
4188: sub dcmaildump {
4189: my ($dom,$startdate,$enddate,$senders) = @_;
4190: my %returnhash=();
4191:
4192: if (defined(&domain($dom,'primary'))) {
4193: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4194: &escape($enddate).':';
4195: my @esc_senders=map { &escape($_)} @$senders;
4196: $cmd.=&escape(join('&',@esc_senders));
4197: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4198: my ($key,$value) = split(/\=/,$line,2);
4199: if (($key) && ($value)) {
4200: $returnhash{&unescape($key)} = &unescape($value);
4201: }
4202: }
4203: }
4204: return %returnhash;
4205: }
4206: # ---------------------------------------------------------- Domain roles
4207:
4208: sub get_domain_roles {
4209: my ($dom,$roles,$startdate,$enddate)=@_;
4210: if ((!defined($startdate)) || ($startdate eq '')) {
4211: $startdate = '.';
4212: }
4213: if ((!defined($enddate)) || ($enddate eq '')) {
4214: $enddate = '.';
4215: }
4216: my $rolelist;
4217: if (ref($roles) eq 'ARRAY') {
4218: $rolelist = join(':',@{$roles});
4219: }
4220: my %personnel = ();
4221:
4222: my %servers = &get_servers($dom,'library');
4223: foreach my $tryserver (keys(%servers)) {
4224: %{$personnel{$tryserver}}=();
4225: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4226: &escape($startdate).':'.
4227: &escape($enddate).':'.
4228: &escape($rolelist), $tryserver))) {
4229: my ($key,$value) = split(/\=/,$line,2);
4230: if (($key) && ($value)) {
4231: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4232: }
4233: }
4234: }
4235: return %personnel;
4236: }
4237:
4238: # ----------------------------------------------------------- Interval timing
4239:
4240: {
4241: # Caches needed for speedup of navmaps
4242: # We don't want to cache this for very long at all (5 seconds at most)
4243: #
4244: # The user for whom we cache
4245: my $cachedkey='';
4246: # The cached times for this user
4247: my %cachedtimes=();
4248: # When this was last done
4249: my $cachedtime=();
4250:
4251: sub load_all_first_access {
4252: my ($uname,$udom)=@_;
4253: if (($cachedkey eq $uname.':'.$udom) &&
4254: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4255: return;
4256: }
4257: $cachedtime=time;
4258: $cachedkey=$uname.':'.$udom;
4259: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4260: }
4261:
4262: sub get_first_access {
4263: my ($type,$argsymb,$argmap)=@_;
4264: my ($symb,$courseid,$udom,$uname)=&whichuser();
4265: if ($argsymb) { $symb=$argsymb; }
4266: my ($map,$id,$res)=&decode_symb($symb);
4267: if ($argmap) { $map = $argmap; }
4268: if ($type eq 'course') {
4269: $res='course';
4270: } elsif ($type eq 'map') {
4271: $res=&symbread($map);
4272: } else {
4273: $res=$symb;
4274: }
4275: &load_all_first_access($uname,$udom);
4276: return $cachedtimes{"$courseid\0$res"};
4277: }
4278:
4279: sub set_first_access {
4280: my ($type,$interval)=@_;
4281: my ($symb,$courseid,$udom,$uname)=&whichuser();
4282: my ($map,$id,$res)=&decode_symb($symb);
4283: if ($type eq 'course') {
4284: $res='course';
4285: } elsif ($type eq 'map') {
4286: $res=&symbread($map);
4287: } else {
4288: $res=$symb;
4289: }
4290: $cachedkey='';
4291: my $firstaccess=&get_first_access($type,$symb,$map);
4292: if (!$firstaccess) {
4293: my $start = time;
4294: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4295: $udom,$uname);
4296: if ($putres eq 'ok') {
4297: &put('timerinterval',{"$courseid\0$res"=>$interval},
4298: $udom,$uname);
4299: &appenv(
4300: {
4301: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4302: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4303: }
4304: );
4305: }
4306: return $putres;
4307: }
4308: return 'already_set';
4309: }
4310: }
4311: # --------------------------------------------- Set Expire Date for Spreadsheet
4312:
4313: sub expirespread {
4314: my ($uname,$udom,$stype,$usymb)=@_;
4315: my $cid=$env{'request.course.id'};
4316: if ($cid) {
4317: my $now=time;
4318: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4319: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4320: $env{'course.'.$cid.'.num'}.
4321: ':nohist_expirationdates:'.
4322: &escape($key).'='.$now,
4323: $env{'course.'.$cid.'.home'})
4324: }
4325: return 'ok';
4326: }
4327:
4328: # ----------------------------------------------------- Devalidate Spreadsheets
4329:
4330: sub devalidate {
4331: my ($symb,$uname,$udom)=@_;
4332: my $cid=$env{'request.course.id'};
4333: if ($cid) {
4334: # delete the stored spreadsheets for
4335: # - the student level sheet of this user in course's homespace
4336: # - the assessment level sheet for this resource
4337: # for this user in user's homespace
4338: # - current conditional state info
4339: my $key=$uname.':'.$udom.':';
4340: my $status=
4341: &del('nohist_calculatedsheets',
4342: [$key.'studentcalc:'],
4343: $env{'course.'.$cid.'.domain'},
4344: $env{'course.'.$cid.'.num'})
4345: .' '.
4346: &del('nohist_calculatedsheets_'.$cid,
4347: [$key.'assesscalc:'.$symb],$udom,$uname);
4348: unless ($status eq 'ok ok') {
4349: &logthis('Could not devalidate spreadsheet '.
4350: $uname.' at '.$udom.' for '.
4351: $symb.': '.$status);
4352: }
4353: &delenv('user.state.'.$cid);
4354: }
4355: }
4356:
4357: sub get_scalar {
4358: my ($string,$end) = @_;
4359: my $value;
4360: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4361: $value = $1;
4362: } elsif ($$string =~ s/^([^&]*?)&//) {
4363: $value = $1;
4364: }
4365: return &unescape($value);
4366: }
4367:
4368: sub array2str {
4369: my (@array) = @_;
4370: my $result=&arrayref2str(\@array);
4371: $result=~s/^__ARRAY_REF__//;
4372: $result=~s/__END_ARRAY_REF__$//;
4373: return $result;
4374: }
4375:
4376: sub arrayref2str {
4377: my ($arrayref) = @_;
4378: my $result='__ARRAY_REF__';
4379: foreach my $elem (@$arrayref) {
4380: if(ref($elem) eq 'ARRAY') {
4381: $result.=&arrayref2str($elem).'&';
4382: } elsif(ref($elem) eq 'HASH') {
4383: $result.=&hashref2str($elem).'&';
4384: } elsif(ref($elem)) {
4385: #print("Got a ref of ".(ref($elem))." skipping.");
4386: } else {
4387: $result.=&escape($elem).'&';
4388: }
4389: }
4390: $result=~s/\&$//;
4391: $result .= '__END_ARRAY_REF__';
4392: return $result;
4393: }
4394:
4395: sub hash2str {
4396: my (%hash) = @_;
4397: my $result=&hashref2str(\%hash);
4398: $result=~s/^__HASH_REF__//;
4399: $result=~s/__END_HASH_REF__$//;
4400: return $result;
4401: }
4402:
4403: sub hashref2str {
4404: my ($hashref)=@_;
4405: my $result='__HASH_REF__';
4406: foreach my $key (sort(keys(%$hashref))) {
4407: if (ref($key) eq 'ARRAY') {
4408: $result.=&arrayref2str($key).'=';
4409: } elsif (ref($key) eq 'HASH') {
4410: $result.=&hashref2str($key).'=';
4411: } elsif (ref($key)) {
4412: $result.='=';
4413: #print("Got a ref of ".(ref($key))." skipping.");
4414: } else {
4415: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4416: }
4417:
4418: if(ref($hashref->{$key}) eq 'ARRAY') {
4419: $result.=&arrayref2str($hashref->{$key}).'&';
4420: } elsif(ref($hashref->{$key}) eq 'HASH') {
4421: $result.=&hashref2str($hashref->{$key}).'&';
4422: } elsif(ref($hashref->{$key})) {
4423: $result.='&';
4424: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4425: } else {
4426: $result.=&escape($hashref->{$key}).'&';
4427: }
4428: }
4429: $result=~s/\&$//;
4430: $result .= '__END_HASH_REF__';
4431: return $result;
4432: }
4433:
4434: sub str2hash {
4435: my ($string)=@_;
4436: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4437: return %$hash;
4438: }
4439:
4440: sub str2hashref {
4441: my ($string) = @_;
4442:
4443: my %hash;
4444:
4445: if($string !~ /^__HASH_REF__/) {
4446: if (! ($string eq '' || !defined($string))) {
4447: $hash{'error'}='Not hash reference';
4448: }
4449: return (\%hash, $string);
4450: }
4451:
4452: $string =~ s/^__HASH_REF__//;
4453:
4454: while($string !~ /^__END_HASH_REF__/) {
4455: #key
4456: my $key='';
4457: if($string =~ /^__HASH_REF__/) {
4458: ($key, $string)=&str2hashref($string);
4459: if(defined($key->{'error'})) {
4460: $hash{'error'}='Bad data';
4461: return (\%hash, $string);
4462: }
4463: } elsif($string =~ /^__ARRAY_REF__/) {
4464: ($key, $string)=&str2arrayref($string);
4465: if($key->[0] eq 'Array reference error') {
4466: $hash{'error'}='Bad data';
4467: return (\%hash, $string);
4468: }
4469: } else {
4470: $string =~ s/^(.*?)=//;
4471: $key=&unescape($1);
4472: }
4473: $string =~ s/^=//;
4474:
4475: #value
4476: my $value='';
4477: if($string =~ /^__HASH_REF__/) {
4478: ($value, $string)=&str2hashref($string);
4479: if(defined($value->{'error'})) {
4480: $hash{'error'}='Bad data';
4481: return (\%hash, $string);
4482: }
4483: } elsif($string =~ /^__ARRAY_REF__/) {
4484: ($value, $string)=&str2arrayref($string);
4485: if($value->[0] eq 'Array reference error') {
4486: $hash{'error'}='Bad data';
4487: return (\%hash, $string);
4488: }
4489: } else {
4490: $value=&get_scalar(\$string,'__END_HASH_REF__');
4491: }
4492: $string =~ s/^&//;
4493:
4494: $hash{$key}=$value;
4495: }
4496:
4497: $string =~ s/^__END_HASH_REF__//;
4498:
4499: return (\%hash, $string);
4500: }
4501:
4502: sub str2array {
4503: my ($string)=@_;
4504: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4505: return @$array;
4506: }
4507:
4508: sub str2arrayref {
4509: my ($string) = @_;
4510: my @array;
4511:
4512: if($string !~ /^__ARRAY_REF__/) {
4513: if (! ($string eq '' || !defined($string))) {
4514: $array[0]='Array reference error';
4515: }
4516: return (\@array, $string);
4517: }
4518:
4519: $string =~ s/^__ARRAY_REF__//;
4520:
4521: while($string !~ /^__END_ARRAY_REF__/) {
4522: my $value='';
4523: if($string =~ /^__HASH_REF__/) {
4524: ($value, $string)=&str2hashref($string);
4525: if(defined($value->{'error'})) {
4526: $array[0] ='Array reference error';
4527: return (\@array, $string);
4528: }
4529: } elsif($string =~ /^__ARRAY_REF__/) {
4530: ($value, $string)=&str2arrayref($string);
4531: if($value->[0] eq 'Array reference error') {
4532: $array[0] ='Array reference error';
4533: return (\@array, $string);
4534: }
4535: } else {
4536: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4537: }
4538: $string =~ s/^&//;
4539:
4540: push(@array, $value);
4541: }
4542:
4543: $string =~ s/^__END_ARRAY_REF__//;
4544:
4545: return (\@array, $string);
4546: }
4547:
4548: # -------------------------------------------------------------------Temp Store
4549:
4550: sub tmpreset {
4551: my ($symb,$namespace,$domain,$stuname) = @_;
4552: if (!$symb) {
4553: $symb=&symbread();
4554: if (!$symb) { $symb= $env{'request.url'}; }
4555: }
4556: $symb=escape($symb);
4557:
4558: if (!$namespace) { $namespace=$env{'request.state'}; }
4559: $namespace=~s/\//\_/g;
4560: $namespace=~s/\W//g;
4561:
4562: if (!$domain) { $domain=$env{'user.domain'}; }
4563: if (!$stuname) { $stuname=$env{'user.name'}; }
4564: if ($domain eq 'public' && $stuname eq 'public') {
4565: $stuname=$ENV{'REMOTE_ADDR'};
4566: }
4567: my $path=LONCAPA::tempdir();
4568: my %hash;
4569: if (tie(%hash,'GDBM_File',
4570: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4571: &GDBM_WRCREAT(),0640)) {
4572: foreach my $key (keys(%hash)) {
4573: if ($key=~ /:$symb/) {
4574: delete($hash{$key});
4575: }
4576: }
4577: }
4578: }
4579:
4580: sub tmpstore {
4581: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4582:
4583: if (!$symb) {
4584: $symb=&symbread();
4585: if (!$symb) { $symb= $env{'request.url'}; }
4586: }
4587: $symb=escape($symb);
4588:
4589: if (!$namespace) {
4590: # I don't think we would ever want to store this for a course.
4591: # it seems this will only be used if we don't have a course.
4592: #$namespace=$env{'request.course.id'};
4593: #if (!$namespace) {
4594: $namespace=$env{'request.state'};
4595: #}
4596: }
4597: $namespace=~s/\//\_/g;
4598: $namespace=~s/\W//g;
4599: if (!$domain) { $domain=$env{'user.domain'}; }
4600: if (!$stuname) { $stuname=$env{'user.name'}; }
4601: if ($domain eq 'public' && $stuname eq 'public') {
4602: $stuname=$ENV{'REMOTE_ADDR'};
4603: }
4604: my $now=time;
4605: my %hash;
4606: my $path=LONCAPA::tempdir();
4607: if (tie(%hash,'GDBM_File',
4608: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4609: &GDBM_WRCREAT(),0640)) {
4610: $hash{"version:$symb"}++;
4611: my $version=$hash{"version:$symb"};
4612: my $allkeys='';
4613: foreach my $key (keys(%$storehash)) {
4614: $allkeys.=$key.':';
4615: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4616: }
4617: $hash{"$version:$symb:timestamp"}=$now;
4618: $allkeys.='timestamp';
4619: $hash{"$version:keys:$symb"}=$allkeys;
4620: if (untie(%hash)) {
4621: return 'ok';
4622: } else {
4623: return "error:$!";
4624: }
4625: } else {
4626: return "error:$!";
4627: }
4628: }
4629:
4630: # -----------------------------------------------------------------Temp Restore
4631:
4632: sub tmprestore {
4633: my ($symb,$namespace,$domain,$stuname) = @_;
4634:
4635: if (!$symb) {
4636: $symb=&symbread();
4637: if (!$symb) { $symb= $env{'request.url'}; }
4638: }
4639: $symb=escape($symb);
4640:
4641: if (!$namespace) { $namespace=$env{'request.state'}; }
4642:
4643: if (!$domain) { $domain=$env{'user.domain'}; }
4644: if (!$stuname) { $stuname=$env{'user.name'}; }
4645: if ($domain eq 'public' && $stuname eq 'public') {
4646: $stuname=$ENV{'REMOTE_ADDR'};
4647: }
4648: my %returnhash;
4649: $namespace=~s/\//\_/g;
4650: $namespace=~s/\W//g;
4651: my %hash;
4652: my $path=LONCAPA::tempdir();
4653: if (tie(%hash,'GDBM_File',
4654: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4655: &GDBM_READER(),0640)) {
4656: my $version=$hash{"version:$symb"};
4657: $returnhash{'version'}=$version;
4658: my $scope;
4659: for ($scope=1;$scope<=$version;$scope++) {
4660: my $vkeys=$hash{"$scope:keys:$symb"};
4661: my @keys=split(/:/,$vkeys);
4662: my $key;
4663: $returnhash{"$scope:keys"}=$vkeys;
4664: foreach $key (@keys) {
4665: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4666: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4667: }
4668: }
4669: if (!(untie(%hash))) {
4670: return "error:$!";
4671: }
4672: } else {
4673: return "error:$!";
4674: }
4675: return %returnhash;
4676: }
4677:
4678: # ----------------------------------------------------------------------- Store
4679:
4680: sub store {
4681: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4682: my $home='';
4683:
4684: if ($stuname) { $home=&homeserver($stuname,$domain); }
4685:
4686: $symb=&symbclean($symb);
4687: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4688:
4689: if (!$domain) { $domain=$env{'user.domain'}; }
4690: if (!$stuname) { $stuname=$env{'user.name'}; }
4691:
4692: &devalidate($symb,$stuname,$domain);
4693:
4694: $symb=escape($symb);
4695: if (!$namespace) {
4696: unless ($namespace=$env{'request.course.id'}) {
4697: return '';
4698: }
4699: }
4700: if (!$home) { $home=$env{'user.home'}; }
4701:
4702: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4703: $$storehash{'host'}=$perlvar{'lonHostID'};
4704:
4705: my $namevalue='';
4706: foreach my $key (keys(%$storehash)) {
4707: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4708: }
4709: $namevalue=~s/\&$//;
4710: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4711: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4712: }
4713:
4714: # -------------------------------------------------------------- Critical Store
4715:
4716: sub cstore {
4717: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4718: my $home='';
4719:
4720: if ($stuname) { $home=&homeserver($stuname,$domain); }
4721:
4722: $symb=&symbclean($symb);
4723: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4724:
4725: if (!$domain) { $domain=$env{'user.domain'}; }
4726: if (!$stuname) { $stuname=$env{'user.name'}; }
4727:
4728: &devalidate($symb,$stuname,$domain);
4729:
4730: $symb=escape($symb);
4731: if (!$namespace) {
4732: unless ($namespace=$env{'request.course.id'}) {
4733: return '';
4734: }
4735: }
4736: if (!$home) { $home=$env{'user.home'}; }
4737:
4738: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4739: $$storehash{'host'}=$perlvar{'lonHostID'};
4740:
4741: my $namevalue='';
4742: foreach my $key (keys(%$storehash)) {
4743: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4744: }
4745: $namevalue=~s/\&$//;
4746: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4747: return critical
4748: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4749: }
4750:
4751: # --------------------------------------------------------------------- Restore
4752:
4753: sub restore {
4754: my ($symb,$namespace,$domain,$stuname) = @_;
4755: my $home='';
4756:
4757: if ($stuname) { $home=&homeserver($stuname,$domain); }
4758:
4759: if (!$symb) {
4760: unless ($symb=escape(&symbread())) { return ''; }
4761: } else {
4762: $symb=&escape(&symbclean($symb));
4763: }
4764: if (!$namespace) {
4765: unless ($namespace=$env{'request.course.id'}) {
4766: return '';
4767: }
4768: }
4769: if (!$domain) { $domain=$env{'user.domain'}; }
4770: if (!$stuname) { $stuname=$env{'user.name'}; }
4771: if (!$home) { $home=$env{'user.home'}; }
4772: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4773:
4774: my %returnhash=();
4775: foreach my $line (split(/\&/,$answer)) {
4776: my ($name,$value)=split(/\=/,$line);
4777: $returnhash{&unescape($name)}=&thaw_unescape($value);
4778: }
4779: my $version;
4780: for ($version=1;$version<=$returnhash{'version'};$version++) {
4781: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4782: $returnhash{$item}=$returnhash{$version.':'.$item};
4783: }
4784: }
4785: return %returnhash;
4786: }
4787:
4788: # ---------------------------------------------------------- Course Description
4789: #
4790: #
4791:
4792: sub coursedescription {
4793: my ($courseid,$args)=@_;
4794: $courseid=~s/^\///;
4795: $courseid=~s/\_/\//g;
4796: my ($cdomain,$cnum)=split(/\//,$courseid);
4797: my $chome=&homeserver($cnum,$cdomain);
4798: my $normalid=$cdomain.'_'.$cnum;
4799: # need to always cache even if we get errors otherwise we keep
4800: # trying and trying and trying to get the course description.
4801: my %envhash=();
4802: my %returnhash=();
4803:
4804: my $expiretime=600;
4805: if ($env{'request.course.id'} eq $normalid) {
4806: $expiretime=120;
4807: }
4808:
4809: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4810: if (!$args->{'freshen_cache'}
4811: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4812: foreach my $key (keys(%env)) {
4813: next if ($key !~ /^\Q$prefix\E(.*)/);
4814: my ($setting) = $1;
4815: $returnhash{$setting} = $env{$key};
4816: }
4817: return %returnhash;
4818: }
4819:
4820: # get the data again
4821:
4822: if (!$args->{'one_time'}) {
4823: $envhash{'course.'.$normalid.'.last_cache'}=time;
4824: }
4825:
4826: if ($chome ne 'no_host') {
4827: %returnhash=&dump('environment',$cdomain,$cnum);
4828: if (!exists($returnhash{'con_lost'})) {
4829: my $username = $env{'user.name'}; # Defult username
4830: if(defined $args->{'user'}) {
4831: $username = $args->{'user'};
4832: }
4833: $returnhash{'home'}= $chome;
4834: $returnhash{'domain'} = $cdomain;
4835: $returnhash{'num'} = $cnum;
4836: if (!defined($returnhash{'type'})) {
4837: $returnhash{'type'} = 'Course';
4838: }
4839: while (my ($name,$value) = each %returnhash) {
4840: $envhash{'course.'.$normalid.'.'.$name}=$value;
4841: }
4842: $returnhash{'url'}=&clutter($returnhash{'url'});
4843: $returnhash{'fn'}=LONCAPA::tempdir() .
4844: $username.'_'.$cdomain.'_'.$cnum;
4845: $envhash{'course.'.$normalid.'.home'}=$chome;
4846: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4847: $envhash{'course.'.$normalid.'.num'}=$cnum;
4848: }
4849: }
4850: if (!$args->{'one_time'}) {
4851: &appenv(\%envhash);
4852: }
4853: return %returnhash;
4854: }
4855:
4856: sub update_released_required {
4857: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4858: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4859: $cid = $env{'request.course.id'};
4860: $cdom = $env{'course.'.$cid.'.domain'};
4861: $cnum = $env{'course.'.$cid.'.num'};
4862: $chome = $env{'course.'.$cid.'.home'};
4863: }
4864: if ($needsrelease) {
4865: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4866: my $needsupdate;
4867: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4868: $needsupdate = 1;
4869: } else {
4870: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4871: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4872: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4873: $needsupdate = 1;
4874: }
4875: }
4876: if ($needsupdate) {
4877: my %needshash = (
4878: 'internal.releaserequired' => $needsrelease,
4879: );
4880: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4881: if ($putresult eq 'ok') {
4882: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4883: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4884: if (ref($crsinfo{$cid}) eq 'HASH') {
4885: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4886: &courseidput($cdom,\%crsinfo,$chome,'notime');
4887: }
4888: }
4889: }
4890: }
4891: return;
4892: }
4893:
4894: # -------------------------------------------------See if a user is privileged
4895:
4896: sub privileged {
4897: my ($username,$domain)=@_;
4898:
4899: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4900: my $now = time;
4901:
4902: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4903: my ($trole, $tend, $tstart) = split(/_/, $role);
4904: if (($trole eq 'dc') || ($trole eq 'su')) {
4905: return 1 unless ($tend && $tend < $now)
4906: or ($tstart && $tstart > $now);
4907: }
4908: }
4909:
4910: return 0;
4911: }
4912:
4913: # -------------------------------------------------------- Get user privileges
4914:
4915: sub rolesinit {
4916: my ($domain, $username) = @_;
4917: my %userroles = ('user.login.time' => time);
4918: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4919:
4920: # firstaccess and timerinterval are related to timed maps/resources.
4921: # also, blocking can be triggered by an activating timer
4922: # it's saved in the user's %env.
4923: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4924: my %timerinterval = &dump('timerinterval', $domain, $username);
4925: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4926: %timerintchk, %timerintenv);
4927:
4928: foreach my $key (keys(%firstaccess)) {
4929: my ($cid, $rest) = split(/\0/, $key);
4930: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4931: }
4932:
4933: foreach my $key (keys(%timerinterval)) {
4934: my ($cid,$rest) = split(/\0/,$key);
4935: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4936: }
4937:
4938: my %allroles=();
4939: my %allgroups=();
4940:
4941: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4942: my $role = $rolesdump{$area};
4943: $area =~ s/\_\w\w$//;
4944:
4945: my ($trole, $tend, $tstart, $group_privs);
4946:
4947: if ($role =~ /^cr/) {
4948: # Custom role, defined by a user
4949: # e.g., user.role.cr/msu/smith/mynewrole
4950: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4951: $trole = $1;
4952: ($tend, $tstart) = split('_', $2);
4953: } else {
4954: $trole = $role;
4955: }
4956: } elsif ($role =~ m|^gr/|) {
4957: # Role of member in a group, defined within a course/community
4958: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
4959: ($trole, $tend, $tstart) = split(/_/, $role);
4960: next if $tstart eq '-1';
4961: ($trole, $group_privs) = split(/\//, $trole);
4962: $group_privs = &unescape($group_privs);
4963: } else {
4964: # Just a normal role, defined in roles.tab
4965: ($trole, $tend, $tstart) = split(/_/,$role);
4966: }
4967:
4968: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4969: $username);
4970: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4971:
4972: # role expired or not available yet?
4973: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
4974: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
4975:
4976: next if $area eq '' or $trole eq '';
4977:
4978: my $spec = "$trole.$area";
4979: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
4980:
4981: if ($trole =~ /^cr\//) {
4982: # Custom role, defined by a user
4983: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4984: } elsif ($trole eq 'gr') {
4985: # Role of a member in a group, defined within a course/community
4986: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4987: next;
4988: } else {
4989: # Normal role, defined in roles.tab
4990: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4991: }
4992:
4993: my $cid = $tdomain.'_'.$trest;
4994: unless ($firstaccchk{$cid}) {
4995: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4996: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4997: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4998: $coursetimerstarts{$cid}{$item};
4999: }
5000: }
5001: $firstaccchk{$cid} = 1;
5002: }
5003: unless ($timerintchk{$cid}) {
5004: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5005: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5006: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5007: $coursetimerintervals{$cid}{$item};
5008: }
5009: }
5010: $timerintchk{$cid} = 1;
5011: }
5012: }
5013:
5014: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5015: \%allroles, \%allgroups);
5016: $env{'user.adv'} = $userroles{'user.adv'};
5017:
5018: return (\%userroles,\%firstaccenv,\%timerintenv);
5019: }
5020:
5021: sub set_arearole {
5022: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
5023: # log the associated role with the area
5024: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5025: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5026: }
5027:
5028: sub custom_roleprivs {
5029: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5030: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5031: my $homsvr=homeserver($rauthor,$rdomain);
5032: if (&hostname($homsvr) ne '') {
5033: my ($rdummy,$roledef)=
5034: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5035: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5036: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5037: if (defined($syspriv)) {
5038: if ($trest =~ /^$match_community$/) {
5039: $syspriv =~ s/bre\&S//;
5040: }
5041: $$allroles{'cm./'}.=':'.$syspriv;
5042: $$allroles{$spec.'./'}.=':'.$syspriv;
5043: }
5044: if ($tdomain ne '') {
5045: if (defined($dompriv)) {
5046: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5047: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5048: }
5049: if (($trest ne '') && (defined($coursepriv))) {
5050: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5051: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5052: }
5053: }
5054: }
5055: }
5056: }
5057:
5058: sub group_roleprivs {
5059: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5060: my $access = 1;
5061: my $now = time;
5062: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5063: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5064: if ($access) {
5065: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5066: $$allgroups{$course}{$group} .=':'.$group_privs;
5067: }
5068: }
5069:
5070: sub standard_roleprivs {
5071: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5072: if (defined($pr{$trole.':s'})) {
5073: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5074: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5075: }
5076: if ($tdomain ne '') {
5077: if (defined($pr{$trole.':d'})) {
5078: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5079: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5080: }
5081: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5082: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5083: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5084: }
5085: }
5086: }
5087:
5088: sub set_userprivs {
5089: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5090: my $author=0;
5091: my $adv=0;
5092: my %grouproles = ();
5093: if (keys(%{$allgroups}) > 0) {
5094: my @groupkeys;
5095: foreach my $role (keys(%{$allroles})) {
5096: push(@groupkeys,$role);
5097: }
5098: if (ref($groups_roles) eq 'HASH') {
5099: foreach my $key (keys(%{$groups_roles})) {
5100: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5101: push(@groupkeys,$key);
5102: }
5103: }
5104: }
5105: if (@groupkeys > 0) {
5106: foreach my $role (@groupkeys) {
5107: my ($trole,$area,$sec,$extendedarea);
5108: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5109: $trole = $1;
5110: $area = $2;
5111: $sec = $3;
5112: $extendedarea = $area.$sec;
5113: if (exists($$allgroups{$area})) {
5114: foreach my $group (keys(%{$$allgroups{$area}})) {
5115: my $spec = $trole.'.'.$extendedarea;
5116: $grouproles{$spec.'.'.$area.'/'.$group} =
5117: $$allgroups{$area}{$group};
5118: }
5119: }
5120: }
5121: }
5122: }
5123: }
5124: foreach my $group (keys(%grouproles)) {
5125: $$allroles{$group} = $grouproles{$group};
5126: }
5127: foreach my $role (keys(%{$allroles})) {
5128: my %thesepriv;
5129: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5130: foreach my $item (split(/:/,$$allroles{$role})) {
5131: if ($item ne '') {
5132: my ($privilege,$restrictions)=split(/&/,$item);
5133: if ($restrictions eq '') {
5134: $thesepriv{$privilege}='F';
5135: } elsif ($thesepriv{$privilege} ne 'F') {
5136: $thesepriv{$privilege}.=$restrictions;
5137: }
5138: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5139: }
5140: }
5141: my $thesestr='';
5142: foreach my $priv (sort(keys(%thesepriv))) {
5143: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5144: }
5145: $userroles->{'user.priv.'.$role} = $thesestr;
5146: }
5147: return ($author,$adv);
5148: }
5149:
5150: sub role_status {
5151: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5152: my @pwhere = ();
5153: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5154: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5155: unless (!defined($$role) || $$role eq '') {
5156: $$where=join('.',@pwhere);
5157: $$trolecode=$$role.'.'.$$where;
5158: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5159: $$tstatus='is';
5160: if ($$tstart && $$tstart>$update) {
5161: $$tstatus='future';
5162: if ($$tstart<$now) {
5163: if ($$tstart && $$tstart>$refresh) {
5164: if (($$where ne '') && ($$role ne '')) {
5165: my (%allroles,%allgroups,$group_privs,
5166: %groups_roles,@rolecodes);
5167: my %userroles = (
5168: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5169: );
5170: @rolecodes = ('cm');
5171: my $spec=$$role.'.'.$$where;
5172: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5173: if ($$role =~ /^cr\//) {
5174: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5175: push(@rolecodes,'cr');
5176: } elsif ($$role eq 'gr') {
5177: push(@rolecodes,$$role);
5178: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5179: $env{'user.name'});
5180: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5181: (undef,my $group_privs) = split(/\//,$trole);
5182: $group_privs = &unescape($group_privs);
5183: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5184: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5185: &get_groups_roles($tdomain,$trest,
5186: \%course_roles,\@rolecodes,
5187: \%groups_roles);
5188: } else {
5189: push(@rolecodes,$$role);
5190: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5191: }
5192: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5193: &appenv(\%userroles,\@rolecodes);
5194: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5195: }
5196: }
5197: $$tstatus = 'is';
5198: }
5199: }
5200: if ($$tend) {
5201: if ($$tend<$update) {
5202: $$tstatus='expired';
5203: } elsif ($$tend<$now) {
5204: $$tstatus='will_not';
5205: }
5206: }
5207: }
5208: }
5209: }
5210:
5211: sub get_groups_roles {
5212: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5213: return unless((ref($cdom_courseroles) eq 'HASH') &&
5214: (ref($rolecodes) eq 'ARRAY') &&
5215: (ref($groups_roles) eq 'HASH'));
5216: if (keys(%{$cdom_courseroles}) > 0) {
5217: my ($cnum) = ($rest =~ /^($match_courseid)/);
5218: if ($cdom ne '' && $cnum ne '') {
5219: foreach my $key (keys(%{$cdom_courseroles})) {
5220: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5221: my $crsrole = $1;
5222: my $crssec = $2;
5223: if ($crsrole =~ /^cr/) {
5224: unless (grep(/^cr$/,@{$rolecodes})) {
5225: push(@{$rolecodes},'cr');
5226: }
5227: } else {
5228: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5229: push(@{$rolecodes},$crsrole);
5230: }
5231: }
5232: my $rolekey = "$crsrole./$cdom/$cnum";
5233: if ($crssec ne '') {
5234: $rolekey .= "/$crssec";
5235: }
5236: $rolekey .= './';
5237: $groups_roles->{$rolekey} = $rolecodes;
5238: }
5239: }
5240: }
5241: }
5242: return;
5243: }
5244:
5245: sub delete_env_groupprivs {
5246: my ($where,$courseroles,$possroles) = @_;
5247: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5248: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5249: unless (ref($courseroles->{$udom}) eq 'HASH') {
5250: %{$courseroles->{$udom}} =
5251: &get_my_roles('','','userroles',['active'],
5252: $possroles,[$udom],1);
5253: }
5254: if (ref($courseroles->{$udom}) eq 'HASH') {
5255: foreach my $item (keys(%{$courseroles->{$udom}})) {
5256: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5257: my $area = '/'.$cdom.'/'.$cnum;
5258: my $privkey = "user.priv.$crsrole.$area";
5259: if ($crssec ne '') {
5260: $privkey .= '/'.$crssec;
5261: }
5262: $privkey .= ".$area/$group";
5263: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5264: }
5265: }
5266: return;
5267: }
5268:
5269: sub check_adhoc_privs {
5270: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5271: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5272: my $setprivs;
5273: if ($env{$cckey}) {
5274: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5275: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5276: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5277: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5278: $setprivs = 1;
5279: }
5280: } else {
5281: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5282: $setprivs = 1;
5283: }
5284: return $setprivs;
5285: }
5286:
5287: sub set_adhoc_privileges {
5288: # role can be cc or ca
5289: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5290: my $area = '/'.$dcdom.'/'.$pickedcourse;
5291: my $spec = $role.'.'.$area;
5292: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5293: $env{'user.name'});
5294: my %ccrole = ();
5295: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5296: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5297: &appenv(\%userroles,[$role,'cm']);
5298: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5299: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5300: &appenv( {'request.role' => $spec,
5301: 'request.role.domain' => $dcdom,
5302: 'request.course.sec' => ''
5303: }
5304: );
5305: my $tadv=0;
5306: if (&allowed('adv') eq 'F') { $tadv=1; }
5307: &appenv({'request.role.adv' => $tadv});
5308: }
5309: }
5310:
5311: # --------------------------------------------------------------- get interface
5312:
5313: sub get {
5314: my ($namespace,$storearr,$udomain,$uname)=@_;
5315: my $items='';
5316: foreach my $item (@$storearr) {
5317: $items.=&escape($item).'&';
5318: }
5319: $items=~s/\&$//;
5320: if (!$udomain) { $udomain=$env{'user.domain'}; }
5321: if (!$uname) { $uname=$env{'user.name'}; }
5322: my $uhome=&homeserver($uname,$udomain);
5323:
5324: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5325: my @pairs=split(/\&/,$rep);
5326: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5327: return @pairs;
5328: }
5329: my %returnhash=();
5330: my $i=0;
5331: foreach my $item (@$storearr) {
5332: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5333: $i++;
5334: }
5335: return %returnhash;
5336: }
5337:
5338: # --------------------------------------------------------------- del interface
5339:
5340: sub del {
5341: my ($namespace,$storearr,$udomain,$uname)=@_;
5342: my $items='';
5343: foreach my $item (@$storearr) {
5344: $items.=&escape($item).'&';
5345: }
5346:
5347: $items=~s/\&$//;
5348: if (!$udomain) { $udomain=$env{'user.domain'}; }
5349: if (!$uname) { $uname=$env{'user.name'}; }
5350: my $uhome=&homeserver($uname,$udomain);
5351: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5352: }
5353:
5354: # -------------------------------------------------------------- dump interface
5355:
5356: sub unserialize {
5357: my ($rep, $escapedkeys) = @_;
5358:
5359: return {} if $rep =~ /^error/;
5360:
5361: my %returnhash=();
5362: foreach my $item (split /\&/, $rep) {
5363: my ($key, $value) = split(/=/, $item, 2);
5364: $key = unescape($key) unless $escapedkeys;
5365: next if $key =~ /^error: 2 /;
5366: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5367: }
5368: #return %returnhash;
5369: return \%returnhash;
5370: }
5371:
5372: # see Lond::dump_with_regexp
5373: # if $escapedkeys hash keys won't get unescaped.
5374: sub dump {
5375: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5376: if (!$udomain) { $udomain=$env{'user.domain'}; }
5377: if (!$uname) { $uname=$env{'user.name'}; }
5378: my $uhome=&homeserver($uname,$udomain);
5379:
5380: my $reply;
5381: if (grep { $_ eq $uhome } current_machine_ids()) {
5382: # user is hosted on this machine
5383: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5384: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5385: return %{unserialize($reply, $escapedkeys)};
5386: }
5387: if ($regexp) {
5388: $regexp=&escape($regexp);
5389: } else {
5390: $regexp='.';
5391: }
5392: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5393: my @pairs=split(/\&/,$rep);
5394: my %returnhash=();
5395: if (!($rep =~ /^error/ )) {
5396: foreach my $item (@pairs) {
5397: my ($key,$value)=split(/=/,$item,2);
5398: $key = unescape($key) unless $escapedkeys;
5399: #$key = &unescape($key);
5400: next if ($key =~ /^error: 2 /);
5401: $returnhash{$key}=&thaw_unescape($value);
5402: }
5403: }
5404: return %returnhash;
5405: }
5406:
5407:
5408: # --------------------------------------------------------- dumpstore interface
5409:
5410: sub dumpstore {
5411: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5412: # same as dump but keys must be escaped. They may contain colon separated
5413: # lists of values that may themself contain colons (e.g. symbs).
5414: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5415: }
5416:
5417: # -------------------------------------------------------------- keys interface
5418:
5419: sub getkeys {
5420: my ($namespace,$udomain,$uname)=@_;
5421: if (!$udomain) { $udomain=$env{'user.domain'}; }
5422: if (!$uname) { $uname=$env{'user.name'}; }
5423: my $uhome=&homeserver($uname,$udomain);
5424: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5425: my @keyarray=();
5426: foreach my $key (split(/\&/,$rep)) {
5427: next if ($key =~ /^error: 2 /);
5428: push(@keyarray,&unescape($key));
5429: }
5430: return @keyarray;
5431: }
5432:
5433: # --------------------------------------------------------------- currentdump
5434: sub currentdump {
5435: my ($courseid,$sdom,$sname)=@_;
5436: $courseid = $env{'request.course.id'} if (! defined($courseid));
5437: $sdom = $env{'user.domain'} if (! defined($sdom));
5438: $sname = $env{'user.name'} if (! defined($sname));
5439: my $uhome = &homeserver($sname,$sdom);
5440: my $rep;
5441:
5442: if (grep { $_ eq $uhome } current_machine_ids()) {
5443: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5444: $courseid)));
5445: } else {
5446: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5447: }
5448:
5449: return if ($rep =~ /^(error:|no_such_host)/);
5450: #
5451: my %returnhash=();
5452: #
5453: if ($rep eq "unknown_cmd") {
5454: # an old lond will not know currentdump
5455: # Do a dump and make it look like a currentdump
5456: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5457: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5458: my %hash = @tmp;
5459: @tmp=();
5460: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5461: } else {
5462: my @pairs=split(/\&/,$rep);
5463: foreach my $pair (@pairs) {
5464: my ($key,$value)=split(/=/,$pair,2);
5465: my ($symb,$param) = split(/:/,$key);
5466: $returnhash{&unescape($symb)}->{&unescape($param)} =
5467: &thaw_unescape($value);
5468: }
5469: }
5470: return %returnhash;
5471: }
5472:
5473: sub convert_dump_to_currentdump{
5474: my %hash = %{shift()};
5475: my %returnhash;
5476: # Code ripped from lond, essentially. The only difference
5477: # here is the unescaping done by lonnet::dump(). Conceivably
5478: # we might run in to problems with parameter names =~ /^v\./
5479: while (my ($key,$value) = each(%hash)) {
5480: my ($v,$symb,$param) = split(/:/,$key);
5481: $symb = &unescape($symb);
5482: $param = &unescape($param);
5483: next if ($v eq 'version' || $symb eq 'keys');
5484: next if (exists($returnhash{$symb}) &&
5485: exists($returnhash{$symb}->{$param}) &&
5486: $returnhash{$symb}->{'v.'.$param} > $v);
5487: $returnhash{$symb}->{$param}=$value;
5488: $returnhash{$symb}->{'v.'.$param}=$v;
5489: }
5490: #
5491: # Remove all of the keys in the hashes which keep track of
5492: # the version of the parameter.
5493: while (my ($symb,$param_hash) = each(%returnhash)) {
5494: # use a foreach because we are going to delete from the hash.
5495: foreach my $key (keys(%$param_hash)) {
5496: delete($param_hash->{$key}) if ($key =~ /^v\./);
5497: }
5498: }
5499: return \%returnhash;
5500: }
5501:
5502: # ------------------------------------------------------ critical inc interface
5503:
5504: sub cinc {
5505: return &inc(@_,'critical');
5506: }
5507:
5508: # --------------------------------------------------------------- inc interface
5509:
5510: sub inc {
5511: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5512: if (!$udomain) { $udomain=$env{'user.domain'}; }
5513: if (!$uname) { $uname=$env{'user.name'}; }
5514: my $uhome=&homeserver($uname,$udomain);
5515: my $items='';
5516: if (! ref($store)) {
5517: # got a single value, so use that instead
5518: $items = &escape($store).'=&';
5519: } elsif (ref($store) eq 'SCALAR') {
5520: $items = &escape($$store).'=&';
5521: } elsif (ref($store) eq 'ARRAY') {
5522: $items = join('=&',map {&escape($_);} @{$store});
5523: } elsif (ref($store) eq 'HASH') {
5524: while (my($key,$value) = each(%{$store})) {
5525: $items.= &escape($key).'='.&escape($value).'&';
5526: }
5527: }
5528: $items=~s/\&$//;
5529: if ($critical) {
5530: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5531: } else {
5532: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5533: }
5534: }
5535:
5536: # --------------------------------------------------------------- put interface
5537:
5538: sub put {
5539: my ($namespace,$storehash,$udomain,$uname)=@_;
5540: if (!$udomain) { $udomain=$env{'user.domain'}; }
5541: if (!$uname) { $uname=$env{'user.name'}; }
5542: my $uhome=&homeserver($uname,$udomain);
5543: my $items='';
5544: foreach my $item (keys(%$storehash)) {
5545: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5546: }
5547: $items=~s/\&$//;
5548: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5549: }
5550:
5551: # ------------------------------------------------------------ newput interface
5552:
5553: sub newput {
5554: my ($namespace,$storehash,$udomain,$uname)=@_;
5555: if (!$udomain) { $udomain=$env{'user.domain'}; }
5556: if (!$uname) { $uname=$env{'user.name'}; }
5557: my $uhome=&homeserver($uname,$udomain);
5558: my $items='';
5559: foreach my $key (keys(%$storehash)) {
5560: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5561: }
5562: $items=~s/\&$//;
5563: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5564: }
5565:
5566: # --------------------------------------------------------- putstore interface
5567:
5568: sub putstore {
5569: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5570: if (!$udomain) { $udomain=$env{'user.domain'}; }
5571: if (!$uname) { $uname=$env{'user.name'}; }
5572: my $uhome=&homeserver($uname,$udomain);
5573: my $items='';
5574: foreach my $key (keys(%$storehash)) {
5575: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5576: }
5577: $items=~s/\&$//;
5578: my $esc_symb=&escape($symb);
5579: my $esc_v=&escape($version);
5580: my $reply =
5581: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5582: $uhome);
5583: if ($reply eq 'unknown_cmd') {
5584: # gfall back to way things use to be done
5585: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5586: $uname);
5587: }
5588: return $reply;
5589: }
5590:
5591: sub old_putstore {
5592: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5593: if (!$udomain) { $udomain=$env{'user.domain'}; }
5594: if (!$uname) { $uname=$env{'user.name'}; }
5595: my $uhome=&homeserver($uname,$udomain);
5596: my %newstorehash;
5597: foreach my $item (keys(%$storehash)) {
5598: my $key = $version.':'.&escape($symb).':'.$item;
5599: $newstorehash{$key} = $storehash->{$item};
5600: }
5601: my $items='';
5602: my %allitems = ();
5603: foreach my $item (keys(%newstorehash)) {
5604: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5605: my $key = $1.':keys:'.$2;
5606: $allitems{$key} .= $3.':';
5607: }
5608: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5609: }
5610: foreach my $item (keys(%allitems)) {
5611: $allitems{$item} =~ s/\:$//;
5612: $items.= $item.'='.$allitems{$item}.'&';
5613: }
5614: $items=~s/\&$//;
5615: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5616: }
5617:
5618: # ------------------------------------------------------ critical put interface
5619:
5620: sub cput {
5621: my ($namespace,$storehash,$udomain,$uname)=@_;
5622: if (!$udomain) { $udomain=$env{'user.domain'}; }
5623: if (!$uname) { $uname=$env{'user.name'}; }
5624: my $uhome=&homeserver($uname,$udomain);
5625: my $items='';
5626: foreach my $item (keys(%$storehash)) {
5627: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5628: }
5629: $items=~s/\&$//;
5630: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5631: }
5632:
5633: # -------------------------------------------------------------- eget interface
5634:
5635: sub eget {
5636: my ($namespace,$storearr,$udomain,$uname)=@_;
5637: my $items='';
5638: foreach my $item (@$storearr) {
5639: $items.=&escape($item).'&';
5640: }
5641: $items=~s/\&$//;
5642: if (!$udomain) { $udomain=$env{'user.domain'}; }
5643: if (!$uname) { $uname=$env{'user.name'}; }
5644: my $uhome=&homeserver($uname,$udomain);
5645: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5646: my @pairs=split(/\&/,$rep);
5647: my %returnhash=();
5648: my $i=0;
5649: foreach my $item (@$storearr) {
5650: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5651: $i++;
5652: }
5653: return %returnhash;
5654: }
5655:
5656: # ------------------------------------------------------------ tmpput interface
5657: sub tmpput {
5658: my ($storehash,$server,$context)=@_;
5659: my $items='';
5660: foreach my $item (keys(%$storehash)) {
5661: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5662: }
5663: $items=~s/\&$//;
5664: if (defined($context)) {
5665: $items .= ':'.&escape($context);
5666: }
5667: return &reply("tmpput:$items",$server);
5668: }
5669:
5670: # ------------------------------------------------------------ tmpget interface
5671: sub tmpget {
5672: my ($token,$server)=@_;
5673: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5674: my $rep=&reply("tmpget:$token",$server);
5675: my %returnhash;
5676: foreach my $item (split(/\&/,$rep)) {
5677: my ($key,$value)=split(/=/,$item);
5678: next if ($key =~ /^error: 2 /);
5679: $returnhash{&unescape($key)}=&thaw_unescape($value);
5680: }
5681: return %returnhash;
5682: }
5683:
5684: # ------------------------------------------------------------ tmpdel interface
5685: sub tmpdel {
5686: my ($token,$server)=@_;
5687: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5688: return &reply("tmpdel:$token",$server);
5689: }
5690:
5691: # -------------------------------------------------- portfolio access checking
5692:
5693: sub portfolio_access {
5694: my ($requrl) = @_;
5695: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5696: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5697: if ($result) {
5698: my %setters;
5699: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5700: my ($startblock,$endblock) =
5701: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5702: if ($startblock && $endblock) {
5703: return 'B';
5704: }
5705: } else {
5706: my ($startblock,$endblock) =
5707: &Apache::loncommon::blockcheck(\%setters,'port');
5708: if ($startblock && $endblock) {
5709: return 'B';
5710: }
5711: }
5712: }
5713: if ($result eq 'ok') {
5714: return 'F';
5715: } elsif ($result =~ /^[^:]+:guest_/) {
5716: return 'A';
5717: }
5718: return '';
5719: }
5720:
5721: sub get_portfolio_access {
5722: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5723:
5724: if (!ref($access_hash)) {
5725: my $current_perms = &get_portfile_permissions($udom,$unum);
5726: my %access_controls = &get_access_controls($current_perms,$group,
5727: $file_name);
5728: $access_hash = $access_controls{$file_name};
5729: }
5730:
5731: my ($public,$guest,@domains,@users,@courses,@groups);
5732: my $now = time;
5733: if (ref($access_hash) eq 'HASH') {
5734: foreach my $key (keys(%{$access_hash})) {
5735: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5736: if ($start > $now) {
5737: next;
5738: }
5739: if ($end && $end<$now) {
5740: next;
5741: }
5742: if ($scope eq 'public') {
5743: $public = $key;
5744: last;
5745: } elsif ($scope eq 'guest') {
5746: $guest = $key;
5747: } elsif ($scope eq 'domains') {
5748: push(@domains,$key);
5749: } elsif ($scope eq 'users') {
5750: push(@users,$key);
5751: } elsif ($scope eq 'course') {
5752: push(@courses,$key);
5753: } elsif ($scope eq 'group') {
5754: push(@groups,$key);
5755: }
5756: }
5757: if ($public) {
5758: return 'ok';
5759: }
5760: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5761: if ($guest) {
5762: return $guest;
5763: }
5764: } else {
5765: if (@domains > 0) {
5766: foreach my $domkey (@domains) {
5767: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5768: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5769: return 'ok';
5770: }
5771: }
5772: }
5773: }
5774: if (@users > 0) {
5775: foreach my $userkey (@users) {
5776: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5777: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5778: if (ref($item) eq 'HASH') {
5779: if (($item->{'uname'} eq $env{'user.name'}) &&
5780: ($item->{'udom'} eq $env{'user.domain'})) {
5781: return 'ok';
5782: }
5783: }
5784: }
5785: }
5786: }
5787: }
5788: my %roleshash;
5789: my @courses_and_groups = @courses;
5790: push(@courses_and_groups,@groups);
5791: if (@courses_and_groups > 0) {
5792: my (%allgroups,%allroles);
5793: my ($start,$end,$role,$sec,$group);
5794: foreach my $envkey (%env) {
5795: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5796: my $cid = $2.'_'.$3;
5797: if ($1 eq 'gr') {
5798: $group = $4;
5799: $allgroups{$cid}{$group} = $env{$envkey};
5800: } else {
5801: if ($4 eq '') {
5802: $sec = 'none';
5803: } else {
5804: $sec = $4;
5805: }
5806: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5807: }
5808: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5809: my $cid = $2.'_'.$3;
5810: if ($4 eq '') {
5811: $sec = 'none';
5812: } else {
5813: $sec = $4;
5814: }
5815: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5816: }
5817: }
5818: if (keys(%allroles) == 0) {
5819: return;
5820: }
5821: foreach my $key (@courses_and_groups) {
5822: my %content = %{$$access_hash{$key}};
5823: my $cnum = $content{'number'};
5824: my $cdom = $content{'domain'};
5825: my $cid = $cdom.'_'.$cnum;
5826: if (!exists($allroles{$cid})) {
5827: next;
5828: }
5829: foreach my $role_id (keys(%{$content{'roles'}})) {
5830: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5831: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5832: my @status = @{$content{'roles'}{$role_id}{'access'}};
5833: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5834: foreach my $role (keys(%{$allroles{$cid}})) {
5835: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5836: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5837: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5838: if (grep/^all$/,@sections) {
5839: return 'ok';
5840: } else {
5841: if (grep/^$sec$/,@sections) {
5842: return 'ok';
5843: }
5844: }
5845: }
5846: }
5847: if (keys(%{$allgroups{$cid}}) == 0) {
5848: if (grep/^none$/,@groups) {
5849: return 'ok';
5850: }
5851: } else {
5852: if (grep/^all$/,@groups) {
5853: return 'ok';
5854: }
5855: foreach my $group (keys(%{$allgroups{$cid}})) {
5856: if (grep/^$group$/,@groups) {
5857: return 'ok';
5858: }
5859: }
5860: }
5861: }
5862: }
5863: }
5864: }
5865: }
5866: if ($guest) {
5867: return $guest;
5868: }
5869: }
5870: }
5871: return;
5872: }
5873:
5874: sub course_group_datechecker {
5875: my ($dates,$now,$status) = @_;
5876: my ($start,$end) = split(/\./,$dates);
5877: if (!$start && !$end) {
5878: return 'ok';
5879: }
5880: if (grep/^active$/,@{$status}) {
5881: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5882: return 'ok';
5883: }
5884: }
5885: if (grep/^previous$/,@{$status}) {
5886: if ($end > $now ) {
5887: return 'ok';
5888: }
5889: }
5890: if (grep/^future$/,@{$status}) {
5891: if ($start > $now) {
5892: return 'ok';
5893: }
5894: }
5895: return;
5896: }
5897:
5898: sub parse_portfolio_url {
5899: my ($url) = @_;
5900:
5901: my ($type,$udom,$unum,$group,$file_name);
5902:
5903: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5904: $type = 1;
5905: $udom = $1;
5906: $unum = $2;
5907: $file_name = $3;
5908: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5909: $type = 2;
5910: $udom = $1;
5911: $unum = $2;
5912: $group = $3;
5913: $file_name = $3.'/'.$4;
5914: }
5915: if (wantarray) {
5916: return ($type,$udom,$unum,$file_name,$group);
5917: }
5918: return $type;
5919: }
5920:
5921: sub is_portfolio_url {
5922: my ($url) = @_;
5923: return scalar(&parse_portfolio_url($url));
5924: }
5925:
5926: sub is_portfolio_file {
5927: my ($file) = @_;
5928: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5929: return 1;
5930: }
5931: return;
5932: }
5933:
5934: sub usertools_access {
5935: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5936: my ($access,%tools);
5937: if ($context eq '') {
5938: $context = 'tools';
5939: }
5940: if ($context eq 'requestcourses') {
5941: %tools = (
5942: official => 1,
5943: unofficial => 1,
5944: community => 1,
5945: );
5946: } elsif ($context eq 'requestauthor') {
5947: %tools = (
5948: requestauthor => 1,
5949: );
5950: } else {
5951: %tools = (
5952: aboutme => 1,
5953: blog => 1,
5954: webdav => 1,
5955: portfolio => 1,
5956: );
5957: }
5958: return if (!defined($tools{$tool}));
5959:
5960: if ((!defined($udom)) || (!defined($uname))) {
5961: $udom = $env{'user.domain'};
5962: $uname = $env{'user.name'};
5963: }
5964:
5965: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5966: if ($action ne 'reload') {
5967: if ($context eq 'requestcourses') {
5968: return $env{'environment.canrequest.'.$tool};
5969: } elsif ($context eq 'requestauthor') {
5970: return $env{'environment.canrequest.author'};
5971: } else {
5972: return $env{'environment.availabletools.'.$tool};
5973: }
5974: }
5975: }
5976:
5977: my ($toolstatus,$inststatus,$envkey);
5978: if ($context eq 'requestauthor') {
5979: $envkey = $context;
5980: } else {
5981: $envkey = $context.'.'.$tool;
5982: }
5983:
5984: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5985: ($action ne 'reload')) {
5986: $toolstatus = $env{'environment.'.$envkey};
5987: $inststatus = $env{'environment.inststatus'};
5988: } else {
5989: if (ref($userenvref) eq 'HASH') {
5990: $toolstatus = $userenvref->{$envkey};
5991: $inststatus = $userenvref->{'inststatus'};
5992: } else {
5993: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
5994: $toolstatus = $userenv{$envkey};
5995: $inststatus = $userenv{'inststatus'};
5996: }
5997: }
5998:
5999: if ($toolstatus ne '') {
6000: if ($toolstatus) {
6001: $access = 1;
6002: } else {
6003: $access = 0;
6004: }
6005: return $access;
6006: }
6007:
6008: my ($is_adv,%domdef);
6009: if (ref($is_advref) eq 'HASH') {
6010: $is_adv = $is_advref->{'is_adv'};
6011: } else {
6012: $is_adv = &is_advanced_user($udom,$uname);
6013: }
6014: if (ref($domdefref) eq 'HASH') {
6015: %domdef = %{$domdefref};
6016: } else {
6017: %domdef = &get_domain_defaults($udom);
6018: }
6019: if (ref($domdef{$tool}) eq 'HASH') {
6020: if ($is_adv) {
6021: if ($domdef{$tool}{'_LC_adv'} ne '') {
6022: if ($domdef{$tool}{'_LC_adv'}) {
6023: $access = 1;
6024: } else {
6025: $access = 0;
6026: }
6027: return $access;
6028: }
6029: }
6030: if ($inststatus ne '') {
6031: my ($hasaccess,$hasnoaccess);
6032: foreach my $affiliation (split(/:/,$inststatus)) {
6033: if ($domdef{$tool}{$affiliation} ne '') {
6034: if ($domdef{$tool}{$affiliation}) {
6035: $hasaccess = 1;
6036: } else {
6037: $hasnoaccess = 1;
6038: }
6039: }
6040: }
6041: if ($hasaccess || $hasnoaccess) {
6042: if ($hasaccess) {
6043: $access = 1;
6044: } elsif ($hasnoaccess) {
6045: $access = 0;
6046: }
6047: return $access;
6048: }
6049: } else {
6050: if ($domdef{$tool}{'default'} ne '') {
6051: if ($domdef{$tool}{'default'}) {
6052: $access = 1;
6053: } elsif ($domdef{$tool}{'default'} == 0) {
6054: $access = 0;
6055: }
6056: return $access;
6057: }
6058: }
6059: } else {
6060: if (($context eq 'tools') && ($tool ne 'webdav')) {
6061: $access = 1;
6062: } else {
6063: $access = 0;
6064: }
6065: return $access;
6066: }
6067: }
6068:
6069: sub is_course_owner {
6070: my ($cdom,$cnum,$udom,$uname) = @_;
6071: if (($udom eq '') || ($uname eq '')) {
6072: $udom = $env{'user.domain'};
6073: $uname = $env{'user.name'};
6074: }
6075: unless (($udom eq '') || ($uname eq '')) {
6076: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6077: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6078: return 1;
6079: } else {
6080: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6081: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6082: return 1;
6083: }
6084: }
6085: }
6086: }
6087: return;
6088: }
6089:
6090: sub is_advanced_user {
6091: my ($udom,$uname) = @_;
6092: if ($udom ne '' && $uname ne '') {
6093: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6094: if (wantarray) {
6095: return ($env{'user.adv'},$env{'user.author'});
6096: } else {
6097: return $env{'user.adv'};
6098: }
6099: }
6100: }
6101: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6102: my %allroles;
6103: my ($is_adv,$is_author);
6104: foreach my $role (keys(%roleshash)) {
6105: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6106: my $area = '/'.$tdomain.'/'.$trest;
6107: if ($sec ne '') {
6108: $area .= '/'.$sec;
6109: }
6110: if (($area ne '') && ($trole ne '')) {
6111: my $spec=$trole.'.'.$area;
6112: if ($trole =~ /^cr\//) {
6113: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6114: } elsif ($trole ne 'gr') {
6115: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6116: }
6117: if ($trole eq 'au') {
6118: $is_author = 1;
6119: }
6120: }
6121: }
6122: foreach my $role (keys(%allroles)) {
6123: last if ($is_adv);
6124: foreach my $item (split(/:/,$allroles{$role})) {
6125: if ($item ne '') {
6126: my ($privilege,$restrictions)=split(/&/,$item);
6127: if ($privilege eq 'adv') {
6128: $is_adv = 1;
6129: last;
6130: }
6131: }
6132: }
6133: }
6134: if (wantarray) {
6135: return ($is_adv,$is_author);
6136: }
6137: return $is_adv;
6138: }
6139:
6140: sub check_can_request {
6141: my ($dom,$can_request,$request_domains) = @_;
6142: my $canreq = 0;
6143: my ($types,$typename) = &Apache::loncommon::course_types();
6144: my @options = ('approval','validate','autolimit');
6145: my $optregex = join('|',@options);
6146: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6147: foreach my $type (@{$types}) {
6148: if (&usertools_access($env{'user.name'},
6149: $env{'user.domain'},
6150: $type,undef,'requestcourses')) {
6151: $canreq ++;
6152: if (ref($request_domains) eq 'HASH') {
6153: push(@{$request_domains->{$type}},$env{'user.domain'});
6154: }
6155: if ($dom eq $env{'user.domain'}) {
6156: $can_request->{$type} = 1;
6157: }
6158: }
6159: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6160: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6161: if (@curr > 0) {
6162: foreach my $item (@curr) {
6163: if (ref($request_domains) eq 'HASH') {
6164: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6165: if ($otherdom ne '') {
6166: if (ref($request_domains->{$type}) eq 'ARRAY') {
6167: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6168: push(@{$request_domains->{$type}},$otherdom);
6169: }
6170: } else {
6171: push(@{$request_domains->{$type}},$otherdom);
6172: }
6173: }
6174: }
6175: }
6176: unless($dom eq $env{'user.domain'}) {
6177: $canreq ++;
6178: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6179: $can_request->{$type} = 1;
6180: }
6181: }
6182: }
6183: }
6184: }
6185: }
6186: return $canreq;
6187: }
6188:
6189: # ---------------------------------------------- Custom access rule evaluation
6190:
6191: sub customaccess {
6192: my ($priv,$uri)=@_;
6193: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6194: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6195: $udom = &LONCAPA::clean_domain($udom);
6196: $ucrs = &LONCAPA::clean_username($ucrs);
6197: my $access=0;
6198: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6199: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6200: if ($type eq 'user') {
6201: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6202: my ($tdom,$tuname)=split(m{/},$scope);
6203: if ($tdom) {
6204: if ($tdom ne $env{'user.domain'}) { next; }
6205: }
6206: if ($tuname) {
6207: if ($tuname ne $env{'user.name'}) { next; }
6208: }
6209: $access=($effect eq 'allow');
6210: last;
6211: }
6212: } else {
6213: if ($role) {
6214: if ($role ne $urole) { next; }
6215: }
6216: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6217: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6218: if ($tdom) {
6219: if ($tdom ne $udom) { next; }
6220: }
6221: if ($tcrs) {
6222: if ($tcrs ne $ucrs) { next; }
6223: }
6224: if ($tsec) {
6225: if ($tsec ne $usec) { next; }
6226: }
6227: $access=($effect eq 'allow');
6228: last;
6229: }
6230: if ($realm eq '' && $role eq '') {
6231: $access=($effect eq 'allow');
6232: }
6233: }
6234: }
6235: return $access;
6236: }
6237:
6238: # ------------------------------------------------- Check for a user privilege
6239:
6240: sub allowed {
6241: my ($priv,$uri,$symb,$role)=@_;
6242: my $ver_orguri=$uri;
6243: $uri=&deversion($uri);
6244: my $orguri=$uri;
6245: $uri=&declutter($uri);
6246:
6247: if ($priv eq 'evb') {
6248: # Evade communication block restrictions for specified role in a course
6249: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6250: return $1;
6251: } else {
6252: return;
6253: }
6254: }
6255:
6256: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6257: # Free bre access to adm and meta resources
6258: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6259: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6260: && ($priv eq 'bre')) {
6261: return 'F';
6262: }
6263:
6264: # Free bre access to user's own portfolio contents
6265: my ($space,$domain,$name,@dir)=split('/',$uri);
6266: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6267: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6268: my %setters;
6269: my ($startblock,$endblock) =
6270: &Apache::loncommon::blockcheck(\%setters,'port');
6271: if ($startblock && $endblock) {
6272: return 'B';
6273: } else {
6274: return 'F';
6275: }
6276: }
6277:
6278: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6279: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6280: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6281: if (exists($env{'request.course.id'})) {
6282: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6283: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6284: if (($domain eq $cdom) && ($name eq $cnum)) {
6285: my $courseprivid=$env{'request.course.id'};
6286: $courseprivid=~s/\_/\//;
6287: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6288: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6289: return $1;
6290: } else {
6291: if ($env{'request.course.sec'}) {
6292: $courseprivid.='/'.$env{'request.course.sec'};
6293: }
6294: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6295: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6296: return $2;
6297: }
6298: }
6299: }
6300: }
6301: }
6302:
6303: # Free bre to public access
6304:
6305: if ($priv eq 'bre') {
6306: my $copyright=&metadata($uri,'copyright');
6307: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6308: return 'F';
6309: }
6310: if ($copyright eq 'priv') {
6311: $uri=~/([^\/]+)\/([^\/]+)\//;
6312: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6313: return '';
6314: }
6315: }
6316: if ($copyright eq 'domain') {
6317: $uri=~/([^\/]+)\/([^\/]+)\//;
6318: unless (($env{'user.domain'} eq $1) ||
6319: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6320: return '';
6321: }
6322: }
6323: if ($env{'request.role'}=~ /li\.\//) {
6324: # Library role, so allow browsing of resources in this domain.
6325: return 'F';
6326: }
6327: if ($copyright eq 'custom') {
6328: unless (&customaccess($priv,$uri)) { return ''; }
6329: }
6330: }
6331: # Domain coordinator is trying to create a course
6332: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6333: # uri is the requested domain in this case.
6334: # comparison to 'request.role.domain' shows if the user has selected
6335: # a role of dc for the domain in question.
6336: return 'F' if ($uri eq $env{'request.role.domain'});
6337: }
6338:
6339: my $thisallowed='';
6340: my $statecond=0;
6341: my $courseprivid='';
6342:
6343: my $ownaccess;
6344: # Community Coordinator or Assistant Co-author browsing resource space.
6345: if (($priv eq 'bro') && ($env{'user.author'})) {
6346: if ($uri eq '') {
6347: $ownaccess = 1;
6348: } else {
6349: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6350: my $udom = $env{'user.domain'};
6351: my $uname = $env{'user.name'};
6352: if ($uri =~ m{^\Q$udom\E/?$}) {
6353: $ownaccess = 1;
6354: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6355: unless ($uri =~ m{\.\./}) {
6356: $ownaccess = 1;
6357: }
6358: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6359: my $now = time;
6360: if ($uri =~ m{^([^/]+)/?$}) {
6361: my $adom = $1;
6362: foreach my $key (keys(%env)) {
6363: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6364: my ($start,$end) = split('.',$env{$key});
6365: if (($now >= $start) && (!$end || $end < $now)) {
6366: $ownaccess = 1;
6367: last;
6368: }
6369: }
6370: }
6371: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6372: my $adom = $1;
6373: my $aname = $2;
6374: foreach my $role ('ca','aa') {
6375: if ($env{"user.role.$role./$adom/$aname"}) {
6376: my ($start,$end) =
6377: split('.',$env{"user.role.$role./$adom/$aname"});
6378: if (($now >= $start) && (!$end || $end < $now)) {
6379: $ownaccess = 1;
6380: last;
6381: }
6382: }
6383: }
6384: }
6385: }
6386: }
6387: }
6388: }
6389:
6390: # Course
6391:
6392: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6393: unless (($priv eq 'bro') && (!$ownaccess)) {
6394: $thisallowed.=$1;
6395: }
6396: }
6397:
6398: # Domain
6399:
6400: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6401: =~/\Q$priv\E\&([^\:]*)/) {
6402: unless (($priv eq 'bro') && (!$ownaccess)) {
6403: $thisallowed.=$1;
6404: }
6405: }
6406:
6407: # User who is not author or co-author might still be able to edit
6408: # resource of an author in the domain (e.g., if Domain Coordinator).
6409: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6410: (&allowed('mdc',$env{'request.course.id'}))) {
6411: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6412: $thisallowed.=$1;
6413: }
6414: }
6415:
6416: # Course: uri itself is a course
6417: my $courseuri=$uri;
6418: $courseuri=~s/\_(\d)/\/$1/;
6419: $courseuri=~s/^([^\/])/\/$1/;
6420:
6421: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6422: =~/\Q$priv\E\&([^\:]*)/) {
6423: unless (($priv eq 'bro') && (!$ownaccess)) {
6424: $thisallowed.=$1;
6425: }
6426: }
6427:
6428: # URI is an uploaded document for this course, default permissions don't matter
6429: # not allowing 'edit' access (editupload) to uploaded course docs
6430: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6431: $thisallowed='';
6432: my ($match)=&is_on_map($uri);
6433: if ($match) {
6434: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6435: =~/\Q$priv\E\&([^\:]*)/) {
6436: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6437: if (@blockers > 0) {
6438: $thisallowed = 'B';
6439: } else {
6440: $thisallowed.=$1;
6441: }
6442: }
6443: } else {
6444: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6445: if ($refuri) {
6446: if ($refuri =~ m|^/adm/|) {
6447: $thisallowed='F';
6448: } else {
6449: $refuri=&declutter($refuri);
6450: my ($match) = &is_on_map($refuri);
6451: if ($match) {
6452: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6453: if (@blockers > 0) {
6454: $thisallowed = 'B';
6455: } else {
6456: $thisallowed='F';
6457: }
6458: }
6459: }
6460: }
6461: }
6462: }
6463:
6464: if ($priv eq 'bre'
6465: && $thisallowed ne 'F'
6466: && $thisallowed ne '2'
6467: && &is_portfolio_url($uri)) {
6468: $thisallowed = &portfolio_access($uri);
6469: }
6470:
6471: # Full access at system, domain or course-wide level? Exit.
6472: if ($thisallowed=~/F/) {
6473: return 'F';
6474: }
6475:
6476: # If this is generating or modifying users, exit with special codes
6477:
6478: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6479: if (($priv eq 'cca') || ($priv eq 'caa')) {
6480: my ($audom,$auname)=split('/',$uri);
6481: # no author name given, so this just checks on the general right to make a co-author in this domain
6482: unless ($auname) { return $thisallowed; }
6483: # an author name is given, so we are about to actually make a co-author for a certain account
6484: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6485: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6486: ($audom ne $env{'request.role.domain'}))) { return ''; }
6487: }
6488: return $thisallowed;
6489: }
6490: #
6491: # Gathered so far: system, domain and course wide privileges
6492: #
6493: # Course: See if uri or referer is an individual resource that is part of
6494: # the course
6495:
6496: if ($env{'request.course.id'}) {
6497:
6498: $courseprivid=$env{'request.course.id'};
6499: if ($env{'request.course.sec'}) {
6500: $courseprivid.='/'.$env{'request.course.sec'};
6501: }
6502: $courseprivid=~s/\_/\//;
6503: my $checkreferer=1;
6504: my ($match,$cond)=&is_on_map($uri);
6505: if ($match) {
6506: $statecond=$cond;
6507: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6508: =~/\Q$priv\E\&([^\:]*)/) {
6509: my $value = $1;
6510: if ($priv eq 'bre') {
6511: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6512: if (@blockers > 0) {
6513: $thisallowed = 'B';
6514: } else {
6515: $thisallowed.=$value;
6516: }
6517: } else {
6518: $thisallowed.=$value;
6519: }
6520: $checkreferer=0;
6521: }
6522: }
6523:
6524: if ($checkreferer) {
6525: my $refuri=$env{'httpref.'.$orguri};
6526: unless ($refuri) {
6527: foreach my $key (keys(%env)) {
6528: if ($key=~/^httpref\..*\*/) {
6529: my $pattern=$key;
6530: $pattern=~s/^httpref\.\/res\///;
6531: $pattern=~s/\*/\[\^\/\]\+/g;
6532: $pattern=~s/\//\\\//g;
6533: if ($orguri=~/$pattern/) {
6534: $refuri=$env{$key};
6535: }
6536: }
6537: }
6538: }
6539:
6540: if ($refuri) {
6541: $refuri=&declutter($refuri);
6542: my ($match,$cond)=&is_on_map($refuri);
6543: if ($match) {
6544: my $refstatecond=$cond;
6545: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6546: =~/\Q$priv\E\&([^\:]*)/) {
6547: my $value = $1;
6548: if ($priv eq 'bre') {
6549: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6550: if (@blockers > 0) {
6551: $thisallowed = 'B';
6552: } else {
6553: $thisallowed.=$value;
6554: }
6555: } else {
6556: $thisallowed.=$value;
6557: }
6558: $uri=$refuri;
6559: $statecond=$refstatecond;
6560: }
6561: }
6562: }
6563: }
6564: }
6565:
6566: #
6567: # Gathered now: all privileges that could apply, and condition number
6568: #
6569: #
6570: # Full or no access?
6571: #
6572:
6573: if ($thisallowed=~/F/) {
6574: return 'F';
6575: }
6576:
6577: unless ($thisallowed) {
6578: return '';
6579: }
6580:
6581: # Restrictions exist, deal with them
6582: #
6583: # C:according to course preferences
6584: # R:according to resource settings
6585: # L:unless locked
6586: # X:according to user session state
6587: #
6588:
6589: # Possibly locked functionality, check all courses
6590: # Locks might take effect only after 10 minutes cache expiration for other
6591: # courses, and 2 minutes for current course
6592:
6593: my $envkey;
6594: if ($thisallowed=~/L/) {
6595: foreach $envkey (keys(%env)) {
6596: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6597: my $courseid=$2;
6598: my $roleid=$1.'.'.$2;
6599: $courseid=~s/^\///;
6600: my $expiretime=600;
6601: if ($env{'request.role'} eq $roleid) {
6602: $expiretime=120;
6603: }
6604: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6605: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6606: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6607: &coursedescription($courseid,{'freshen_cache' => 1});
6608: }
6609: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6610: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6611: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6612: &log($env{'user.domain'},$env{'user.name'},
6613: $env{'user.home'},
6614: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6615: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6616: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6617: return '';
6618: }
6619: }
6620: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6621: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6622: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6623: &log($env{'user.domain'},$env{'user.name'},
6624: $env{'user.home'},
6625: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6626: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6627: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6628: return '';
6629: }
6630: }
6631: }
6632: }
6633: }
6634:
6635: #
6636: # Rest of the restrictions depend on selected course
6637: #
6638:
6639: unless ($env{'request.course.id'}) {
6640: if ($thisallowed eq 'A') {
6641: return 'A';
6642: } elsif ($thisallowed eq 'B') {
6643: return 'B';
6644: } else {
6645: return '1';
6646: }
6647: }
6648:
6649: #
6650: # Now user is definitely in a course
6651: #
6652:
6653:
6654: # Course preferences
6655:
6656: if ($thisallowed=~/C/) {
6657: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6658: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6659: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6660: =~/\Q$rolecode\E/) {
6661: if (($priv ne 'pch') && ($priv ne 'plc')) {
6662: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6663: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6664: $env{'request.course.id'});
6665: }
6666: return '';
6667: }
6668:
6669: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6670: =~/\Q$unamedom\E/) {
6671: if (($priv ne 'pch') && ($priv ne 'plc')) {
6672: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6673: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6674: $env{'request.course.id'});
6675: }
6676: return '';
6677: }
6678: }
6679:
6680: # Resource preferences
6681:
6682: if ($thisallowed=~/R/) {
6683: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6684: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6685: if (($priv ne 'pch') && ($priv ne 'plc')) {
6686: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6687: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6688: }
6689: return '';
6690: }
6691: }
6692:
6693: # Restricted by state or randomout?
6694:
6695: if ($thisallowed=~/X/) {
6696: if ($env{'acc.randomout'}) {
6697: if (!$symb) { $symb=&symbread($uri,1); }
6698: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6699: return '';
6700: }
6701: }
6702: if (&condval($statecond)) {
6703: return '2';
6704: } else {
6705: return '';
6706: }
6707: }
6708:
6709: if ($thisallowed eq 'A') {
6710: return 'A';
6711: } elsif ($thisallowed eq 'B') {
6712: return 'B';
6713: }
6714: return 'F';
6715: }
6716:
6717: # ------------------------------------------- Check construction space access
6718:
6719: sub constructaccess {
6720: my ($url,$setpriv)=@_;
6721:
6722: # We do not allow editing of previous versions of files
6723: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6724:
6725: # Get username and domain from URL
6726: my ($ownername,$ownerdomain,$ownerhome);
6727:
6728: ($ownerdomain,$ownername) =
6729: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6730:
6731: # The URL does not really point to any authorspace, forget it
6732: unless (($ownername) && ($ownerdomain)) { return ''; }
6733:
6734: # Now we need to see if the user has access to the authorspace of
6735: # $ownername at $ownerdomain
6736:
6737: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6738: # Real author for this?
6739: $ownerhome = $env{'user.home'};
6740: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6741: return ($ownername,$ownerdomain,$ownerhome);
6742: }
6743: } else {
6744: # Co-author for this?
6745: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6746: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6747: $ownerhome = &homeserver($ownername,$ownerdomain);
6748: return ($ownername,$ownerdomain,$ownerhome);
6749: }
6750: }
6751:
6752: # We don't have any access right now. If we are not possibly going to do anything about this,
6753: # we might as well leave
6754: unless ($setpriv) { return ''; }
6755:
6756: # Backdoor access?
6757: my $allowed=&allowed('eco',$ownerdomain);
6758: # Nope
6759: unless ($allowed) { return ''; }
6760: # Looks like we may have access, but could be locked by the owner of the construction space
6761: if ($allowed eq 'U') {
6762: my %blocked=&get('environment',['domcoord.author'],
6763: $ownerdomain,$ownername);
6764: # Is blocked by owner
6765: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
6766: }
6767: if (($allowed eq 'F') || ($allowed eq 'U')) {
6768: # Grant temporary access
6769: my $then=$env{'user.login.time'};
6770: my $update==$env{'user.update.time'};
6771: if (!$update) { $update = $then; }
6772: my $refresh=$env{'user.refresh.time'};
6773: if (!$refresh) { $refresh = $update; }
6774: my $now = time;
6775: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
6776: $now,'ca','constructaccess');
6777: $ownerhome = &homeserver($ownername,$ownerdomain);
6778: return($ownername,$ownerdomain,$ownerhome);
6779: }
6780: # No business here
6781: return '';
6782: }
6783:
6784: sub get_comm_blocks {
6785: my ($cdom,$cnum) = @_;
6786: if ($cdom eq '' || $cnum eq '') {
6787: return unless ($env{'request.course.id'});
6788: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6789: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6790: }
6791: my %commblocks;
6792: my $hashid=$cdom.'_'.$cnum;
6793: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6794: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6795: %commblocks = %{$blocksref};
6796: } else {
6797: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6798: my $cachetime = 600;
6799: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6800: }
6801: return %commblocks;
6802: }
6803:
6804: sub has_comm_blocking {
6805: my ($priv,$symb,$uri,$blocks) = @_;
6806: return unless ($env{'request.course.id'});
6807: return unless ($priv eq 'bre');
6808: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6809: my %commblocks;
6810: if (ref($blocks) eq 'HASH') {
6811: %commblocks = %{$blocks};
6812: } else {
6813: %commblocks = &get_comm_blocks();
6814: }
6815: return unless (keys(%commblocks) > 0);
6816: if (!$symb) { $symb=&symbread($uri,1); }
6817: my ($map,$resid,undef)=&decode_symb($symb);
6818: my %tocheck = (
6819: maps => $map,
6820: resources => $symb,
6821: );
6822: my @blockers;
6823: my $now = time;
6824: my $navmap = Apache::lonnavmaps::navmap->new();
6825: foreach my $block (keys(%commblocks)) {
6826: if ($block =~ /^(\d+)____(\d+)$/) {
6827: my ($start,$end) = ($1,$2);
6828: if ($start <= $now && $end >= $now) {
6829: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6830: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6831: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6832: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6833: unless (grep(/^\Q$block\E$/,@blockers)) {
6834: push(@blockers,$block);
6835: }
6836: }
6837: }
6838: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6839: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6840: unless (grep(/^\Q$block\E$/,@blockers)) {
6841: push(@blockers,$block);
6842: }
6843: }
6844: }
6845: }
6846: }
6847: }
6848: } elsif ($block =~ /^firstaccess____(.+)$/) {
6849: my $item = $1;
6850: my @to_test;
6851: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6852: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6853: my $check_interval;
6854: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6855: my @interval;
6856: my $type = 'map';
6857: if ($item eq 'course') {
6858: $type = 'course';
6859: @interval=&EXT("resource.0.interval");
6860: } else {
6861: if ($item =~ /___\d+___/) {
6862: $type = 'resource';
6863: @interval=&EXT("resource.0.interval",$item);
6864: if (ref($navmap)) {
6865: my $res = $navmap->getBySymb($item);
6866: push(@to_test,$res);
6867: }
6868: } else {
6869: my $mapsymb = &symbread($item,1);
6870: if ($mapsymb) {
6871: if (ref($navmap)) {
6872: my $mapres = $navmap->getBySymb($mapsymb);
6873: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6874: foreach my $res (@to_test) {
6875: my $symb = $res->symb();
6876: next if ($symb eq $mapsymb);
6877: if ($symb ne '') {
6878: @interval=&EXT("resource.0.interval",$symb);
6879: last;
6880: }
6881: }
6882: }
6883: }
6884: }
6885: }
6886: if ($interval[0] =~ /\d+/) {
6887: my $first_access;
6888: if ($type eq 'resource') {
6889: $first_access=&get_first_access($interval[1],$item);
6890: } elsif ($type eq 'map') {
6891: $first_access=&get_first_access($interval[1],undef,$item);
6892: } else {
6893: $first_access=&get_first_access($interval[1]);
6894: }
6895: if ($first_access) {
6896: my $timesup = $first_access+$interval[0];
6897: if ($timesup > $now) {
6898: foreach my $res (@to_test) {
6899: if ($res->is_problem()) {
6900: if ($res->completable()) {
6901: unless (grep(/^\Q$block\E$/,@blockers)) {
6902: push(@blockers,$block);
6903: }
6904: last;
6905: }
6906: }
6907: }
6908: }
6909: }
6910: }
6911: }
6912: }
6913: }
6914: }
6915: }
6916: return @blockers;
6917: }
6918:
6919: sub check_docs_block {
6920: my ($docsblock,$tocheck) =@_;
6921: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6922: return;
6923: }
6924: if (ref($docsblock->{'maps'}) eq 'HASH') {
6925: if ($tocheck->{'maps'}) {
6926: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6927: return 1;
6928: }
6929: }
6930: }
6931: if (ref($docsblock->{'resources'}) eq 'HASH') {
6932: if ($tocheck->{'resources'}) {
6933: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6934: return 1;
6935: }
6936: }
6937: }
6938: return;
6939: }
6940:
6941: #
6942: # Removes the versino from a URI and
6943: # splits it in to its filename and path to the filename.
6944: # Seems like File::Basename could have done this more clearly.
6945: # Parameters:
6946: # $uri - input URI
6947: # Returns:
6948: # Two element list consisting of
6949: # $pathname - the URI up to and excluding the trailing /
6950: # $filename - The part of the URI following the last /
6951: # NOTE:
6952: # Another realization of this is simply:
6953: # use File::Basename;
6954: # ...
6955: # $uri = shift;
6956: # $filename = basename($uri);
6957: # $path = dirname($uri);
6958: # return ($filename, $path);
6959: #
6960: # The implementation below is probably faster however.
6961: #
6962: sub split_uri_for_cond {
6963: my $uri=&deversion(&declutter(shift));
6964: my @uriparts=split(/\//,$uri);
6965: my $filename=pop(@uriparts);
6966: my $pathname=join('/',@uriparts);
6967: return ($pathname,$filename);
6968: }
6969: # --------------------------------------------------- Is a resource on the map?
6970:
6971: sub is_on_map {
6972: my ($pathname,$filename) = &split_uri_for_cond(shift);
6973: #Trying to find the conditional for the file
6974: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6975: /\&\Q$filename\E\:([\d\|]+)\&/);
6976: if ($match) {
6977: return (1,$1);
6978: } else {
6979: return (0,0);
6980: }
6981: }
6982:
6983: # --------------------------------------------------------- Get symb from alias
6984:
6985: sub get_symb_from_alias {
6986: my $symb=shift;
6987: my ($map,$resid,$url)=&decode_symb($symb);
6988: # Already is a symb
6989: if ($url) { return $symb; }
6990: # Must be an alias
6991: my $aliassymb='';
6992: my %bighash;
6993: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6994: &GDBM_READER(),0640)) {
6995: my $rid=$bighash{'mapalias_'.$symb};
6996: if ($rid) {
6997: my ($mapid,$resid)=split(/\./,$rid);
6998: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6999: $resid,$bighash{'src_'.$rid});
7000: }
7001: untie %bighash;
7002: }
7003: return $aliassymb;
7004: }
7005:
7006: # ----------------------------------------------------------------- Define Role
7007:
7008: sub definerole {
7009: if (allowed('mcr','/')) {
7010: my ($rolename,$sysrole,$domrole,$courole)=@_;
7011: foreach my $role (split(':',$sysrole)) {
7012: my ($crole,$cqual)=split(/\&/,$role);
7013: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7014: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7015: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7016: return "refused:s:$crole&$cqual";
7017: }
7018: }
7019: }
7020: foreach my $role (split(':',$domrole)) {
7021: my ($crole,$cqual)=split(/\&/,$role);
7022: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7023: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7024: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7025: return "refused:d:$crole&$cqual";
7026: }
7027: }
7028: }
7029: foreach my $role (split(':',$courole)) {
7030: my ($crole,$cqual)=split(/\&/,$role);
7031: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7032: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7033: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7034: return "refused:c:$crole&$cqual";
7035: }
7036: }
7037: }
7038: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7039: "$env{'user.domain'}:$env{'user.name'}:".
7040: "rolesdef_$rolename=".
7041: escape($sysrole.'_'.$domrole.'_'.$courole);
7042: return reply($command,$env{'user.home'});
7043: } else {
7044: return 'refused';
7045: }
7046: }
7047:
7048: # ---------------- Make a metadata query against the network of library servers
7049:
7050: sub metadata_query {
7051: my ($query,$custom,$customshow,$server_array)=@_;
7052: my %rhash;
7053: my %libserv = &all_library();
7054: my @server_list = (defined($server_array) ? @$server_array
7055: : keys(%libserv) );
7056: for my $server (@server_list) {
7057: unless ($custom or $customshow) {
7058: my $reply=&reply("querysend:".&escape($query),$server);
7059: $rhash{$server}=$reply;
7060: }
7061: else {
7062: my $reply=&reply("querysend:".&escape($query).':'.
7063: &escape($custom).':'.&escape($customshow),
7064: $server);
7065: $rhash{$server}=$reply;
7066: }
7067: }
7068: return \%rhash;
7069: }
7070:
7071: # ----------------------------------------- Send log queries and wait for reply
7072:
7073: sub log_query {
7074: my ($uname,$udom,$query,%filters)=@_;
7075: my $uhome=&homeserver($uname,$udom);
7076: if ($uhome eq 'no_host') { return 'error: no_host'; }
7077: my $uhost=&hostname($uhome);
7078: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7079: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7080: $uhome);
7081: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7082: return get_query_reply($queryid);
7083: }
7084:
7085: # -------------------------- Update MySQL table for portfolio file
7086:
7087: sub update_portfolio_table {
7088: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7089: if ($group ne '') {
7090: $file_name =~s /^\Q$group\E//;
7091: }
7092: my $homeserver = &homeserver($uname,$udom);
7093: my $queryid=
7094: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7095: ':'.&escape($file_name).':'.$action,$homeserver);
7096: my $reply = &get_query_reply($queryid);
7097: return $reply;
7098: }
7099:
7100: # -------------------------- Update MySQL allusers table
7101:
7102: sub update_allusers_table {
7103: my ($uname,$udom,$names) = @_;
7104: my $homeserver = &homeserver($uname,$udom);
7105: my $queryid=
7106: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7107: 'lastname='.&escape($names->{'lastname'}).'%%'.
7108: 'firstname='.&escape($names->{'firstname'}).'%%'.
7109: 'middlename='.&escape($names->{'middlename'}).'%%'.
7110: 'generation='.&escape($names->{'generation'}).'%%'.
7111: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7112: 'id='.&escape($names->{'id'}),$homeserver);
7113: return;
7114: }
7115:
7116: # ------- Request retrieval of institutional classlists for course(s)
7117:
7118: sub fetch_enrollment_query {
7119: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7120: my $homeserver;
7121: my $maxtries = 1;
7122: if ($context eq 'automated') {
7123: $homeserver = $perlvar{'lonHostID'};
7124: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7125: } else {
7126: $homeserver = &homeserver($cnum,$dom);
7127: }
7128: my $host=&hostname($homeserver);
7129: my $cmd = '';
7130: foreach my $affiliate (keys(%{$affiliatesref})) {
7131: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7132: }
7133: $cmd =~ s/%%$//;
7134: $cmd = &escape($cmd);
7135: my $query = 'fetchenrollment';
7136: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7137: unless ($queryid=~/^\Q$host\E\_/) {
7138: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7139: return 'error: '.$queryid;
7140: }
7141: my $reply = &get_query_reply($queryid);
7142: my $tries = 1;
7143: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7144: $reply = &get_query_reply($queryid);
7145: $tries ++;
7146: }
7147: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7148: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7149: } else {
7150: my @responses = split(/:/,$reply);
7151: if ($homeserver eq $perlvar{'lonHostID'}) {
7152: foreach my $line (@responses) {
7153: my ($key,$value) = split(/=/,$line,2);
7154: $$replyref{$key} = $value;
7155: }
7156: } else {
7157: my $pathname = LONCAPA::tempdir();
7158: foreach my $line (@responses) {
7159: my ($key,$value) = split(/=/,$line);
7160: $$replyref{$key} = $value;
7161: if ($value > 0) {
7162: foreach my $item (@{$$affiliatesref{$key}}) {
7163: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7164: my $destname = $pathname.'/'.$filename;
7165: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7166: if ($xml_classlist =~ /^error/) {
7167: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7168: } else {
7169: if ( open(FILE,">$destname") ) {
7170: print FILE &unescape($xml_classlist);
7171: close(FILE);
7172: } else {
7173: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7174: }
7175: }
7176: }
7177: }
7178: }
7179: }
7180: return 'ok';
7181: }
7182: return 'error';
7183: }
7184:
7185: sub get_query_reply {
7186: my $queryid=shift;
7187: my $replyfile=LONCAPA::tempdir().$queryid;
7188: my $reply='';
7189: for (1..100) {
7190: sleep 2;
7191: if (-e $replyfile.'.end') {
7192: if (open(my $fh,$replyfile)) {
7193: $reply = join('',<$fh>);
7194: close($fh);
7195: } else { return 'error: reply_file_error'; }
7196: return &unescape($reply);
7197: }
7198: }
7199: return 'timeout:'.$queryid;
7200: }
7201:
7202: sub courselog_query {
7203: #
7204: # possible filters:
7205: # url: url or symb
7206: # username
7207: # domain
7208: # action: view, submit, grade
7209: # start: timestamp
7210: # end: timestamp
7211: #
7212: my (%filters)=@_;
7213: unless ($env{'request.course.id'}) { return 'no_course'; }
7214: if ($filters{'url'}) {
7215: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7216: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7217: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7218: }
7219: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7220: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7221: return &log_query($cname,$cdom,'courselog',%filters);
7222: }
7223:
7224: sub userlog_query {
7225: #
7226: # possible filters:
7227: # action: log check role
7228: # start: timestamp
7229: # end: timestamp
7230: #
7231: my ($uname,$udom,%filters)=@_;
7232: return &log_query($uname,$udom,'userlog',%filters);
7233: }
7234:
7235: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7236:
7237: sub auto_run {
7238: my ($cnum,$cdom) = @_;
7239: my $response = 0;
7240: my $settings;
7241: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7242: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7243: $settings = $domconfig{'autoenroll'};
7244: if ($settings->{'run'} eq '1') {
7245: $response = 1;
7246: }
7247: } else {
7248: my $homeserver;
7249: if (&is_course($cdom,$cnum)) {
7250: $homeserver = &homeserver($cnum,$cdom);
7251: } else {
7252: $homeserver = &domain($cdom,'primary');
7253: }
7254: if ($homeserver ne 'no_host') {
7255: $response = &reply('autorun:'.$cdom,$homeserver);
7256: }
7257: }
7258: return $response;
7259: }
7260:
7261: sub auto_get_sections {
7262: my ($cnum,$cdom,$inst_coursecode) = @_;
7263: my $homeserver;
7264: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7265: $homeserver = &homeserver($cnum,$cdom);
7266: }
7267: if (!defined($homeserver)) {
7268: if ($cdom =~ /^$match_domain$/) {
7269: $homeserver = &domain($cdom,'primary');
7270: }
7271: }
7272: my @secs;
7273: if (defined($homeserver)) {
7274: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7275: unless ($response eq 'refused') {
7276: @secs = split(/:/,$response);
7277: }
7278: }
7279: return @secs;
7280: }
7281:
7282: sub auto_new_course {
7283: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7284: my $homeserver = &homeserver($cnum,$cdom);
7285: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7286: return $response;
7287: }
7288:
7289: sub auto_validate_courseID {
7290: my ($cnum,$cdom,$inst_course_id) = @_;
7291: my $homeserver = &homeserver($cnum,$cdom);
7292: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7293: return $response;
7294: }
7295:
7296: sub auto_validate_instcode {
7297: my ($cnum,$cdom,$instcode,$owner) = @_;
7298: my ($homeserver,$response);
7299: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7300: $homeserver = &homeserver($cnum,$cdom);
7301: }
7302: if (!defined($homeserver)) {
7303: if ($cdom =~ /^$match_domain$/) {
7304: $homeserver = &domain($cdom,'primary');
7305: }
7306: }
7307: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7308: &escape($instcode).':'.&escape($owner),$homeserver));
7309: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
7310: return ($outcome,$description);
7311: }
7312:
7313: sub auto_create_password {
7314: my ($cnum,$cdom,$authparam,$udom) = @_;
7315: my ($homeserver,$response);
7316: my $create_passwd = 0;
7317: my $authchk = '';
7318: if ($udom =~ /^$match_domain$/) {
7319: $homeserver = &domain($udom,'primary');
7320: }
7321: if ($homeserver eq '') {
7322: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7323: $homeserver = &homeserver($cnum,$cdom);
7324: }
7325: }
7326: if ($homeserver eq '') {
7327: $authchk = 'nodomain';
7328: } else {
7329: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7330: if ($response eq 'refused') {
7331: $authchk = 'refused';
7332: } else {
7333: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7334: }
7335: }
7336: return ($authparam,$create_passwd,$authchk);
7337: }
7338:
7339: sub auto_photo_permission {
7340: my ($cnum,$cdom,$students) = @_;
7341: my $homeserver = &homeserver($cnum,$cdom);
7342: my ($outcome,$perm_reqd,$conditions) =
7343: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7344: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7345: return (undef,undef);
7346: }
7347: return ($outcome,$perm_reqd,$conditions);
7348: }
7349:
7350: sub auto_checkphotos {
7351: my ($uname,$udom,$pid) = @_;
7352: my $homeserver = &homeserver($uname,$udom);
7353: my ($result,$resulttype);
7354: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7355: &escape($uname).':'.&escape($pid),
7356: $homeserver));
7357: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7358: return (undef,undef);
7359: }
7360: if ($outcome) {
7361: ($result,$resulttype) = split(/:/,$outcome);
7362: }
7363: return ($result,$resulttype);
7364: }
7365:
7366: sub auto_photochoice {
7367: my ($cnum,$cdom) = @_;
7368: my $homeserver = &homeserver($cnum,$cdom);
7369: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7370: &escape($cdom),
7371: $homeserver)));
7372: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7373: return (undef,undef);
7374: }
7375: return ($update,$comment);
7376: }
7377:
7378: sub auto_photoupdate {
7379: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7380: my $homeserver = &homeserver($cnum,$dom);
7381: my $host=&hostname($homeserver);
7382: my $cmd = '';
7383: my $maxtries = 1;
7384: foreach my $affiliate (keys(%{$affiliatesref})) {
7385: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7386: }
7387: $cmd =~ s/%%$//;
7388: $cmd = &escape($cmd);
7389: my $query = 'institutionalphotos';
7390: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7391: unless ($queryid=~/^\Q$host\E\_/) {
7392: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7393: return 'error: '.$queryid;
7394: }
7395: my $reply = &get_query_reply($queryid);
7396: my $tries = 1;
7397: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7398: $reply = &get_query_reply($queryid);
7399: $tries ++;
7400: }
7401: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7402: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7403: } else {
7404: my @responses = split(/:/,$reply);
7405: my $outcome = shift(@responses);
7406: foreach my $item (@responses) {
7407: my ($key,$value) = split(/=/,$item);
7408: $$photo{$key} = $value;
7409: }
7410: return $outcome;
7411: }
7412: return 'error';
7413: }
7414:
7415: sub auto_instcode_format {
7416: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7417: $cat_order) = @_;
7418: my $courses = '';
7419: my @homeservers;
7420: if ($caller eq 'global') {
7421: my %servers = &get_servers($codedom,'library');
7422: foreach my $tryserver (keys(%servers)) {
7423: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7424: push(@homeservers,$tryserver);
7425: }
7426: }
7427: } elsif ($caller eq 'requests') {
7428: if ($codedom =~ /^$match_domain$/) {
7429: my $chome = &domain($codedom,'primary');
7430: unless ($chome eq 'no_host') {
7431: push(@homeservers,$chome);
7432: }
7433: }
7434: } else {
7435: push(@homeservers,&homeserver($caller,$codedom));
7436: }
7437: foreach my $code (keys(%{$instcodes})) {
7438: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7439: }
7440: chop($courses);
7441: my $ok_response = 0;
7442: my $response;
7443: while (@homeservers > 0 && $ok_response == 0) {
7444: my $server = shift(@homeservers);
7445: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7446: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7447: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7448: split(/:/,$response);
7449: %{$codes} = (%{$codes},&str2hash($codes_str));
7450: push(@{$codetitles},&str2array($codetitles_str));
7451: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7452: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7453: $ok_response = 1;
7454: }
7455: }
7456: if ($ok_response) {
7457: return 'ok';
7458: } else {
7459: return $response;
7460: }
7461: }
7462:
7463: sub auto_instcode_defaults {
7464: my ($domain,$returnhash,$code_order) = @_;
7465: my @homeservers;
7466:
7467: my %servers = &get_servers($domain,'library');
7468: foreach my $tryserver (keys(%servers)) {
7469: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7470: push(@homeservers,$tryserver);
7471: }
7472: }
7473:
7474: my $response;
7475: foreach my $server (@homeservers) {
7476: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7477: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7478:
7479: foreach my $pair (split(/\&/,$response)) {
7480: my ($name,$value)=split(/\=/,$pair);
7481: if ($name eq 'code_order') {
7482: @{$code_order} = split(/\&/,&unescape($value));
7483: } else {
7484: $returnhash->{&unescape($name)}=&unescape($value);
7485: }
7486: }
7487: return 'ok';
7488: }
7489:
7490: return $response;
7491: }
7492:
7493: sub auto_possible_instcodes {
7494: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7495: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7496: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7497: return;
7498: }
7499: my (@homeservers,$uhome);
7500: if (defined(&domain($domain,'primary'))) {
7501: $uhome=&domain($domain,'primary');
7502: push(@homeservers,&domain($domain,'primary'));
7503: } else {
7504: my %servers = &get_servers($domain,'library');
7505: foreach my $tryserver (keys(%servers)) {
7506: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7507: push(@homeservers,$tryserver);
7508: }
7509: }
7510: }
7511: my $response;
7512: foreach my $server (@homeservers) {
7513: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7514: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7515: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7516: split(':',$response);
7517: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7518: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7519: foreach my $item (split('&',$cat_title)) {
7520: my ($name,$value)=split('=',$item);
7521: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7522: }
7523: foreach my $item (split('&',$cat_order)) {
7524: my ($name,$value)=split('=',$item);
7525: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7526: }
7527: return 'ok';
7528: }
7529: return $response;
7530: }
7531:
7532: sub auto_courserequest_checks {
7533: my ($dom) = @_;
7534: my ($homeserver,%validations);
7535: if ($dom =~ /^$match_domain$/) {
7536: $homeserver = &domain($dom,'primary');
7537: }
7538: unless ($homeserver eq 'no_host') {
7539: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7540: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7541: my @items = split(/&/,$response);
7542: foreach my $item (@items) {
7543: my ($key,$value) = split('=',$item);
7544: $validations{&unescape($key)} = &thaw_unescape($value);
7545: }
7546: }
7547: }
7548: return %validations;
7549: }
7550:
7551: sub auto_courserequest_validation {
7552: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7553: my ($homeserver,$response);
7554: if ($dom =~ /^$match_domain$/) {
7555: $homeserver = &domain($dom,'primary');
7556: }
7557: unless ($homeserver eq 'no_host') {
7558:
7559: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7560: ':'.&escape($crstype).':'.&escape($inststatuslist).
7561: ':'.&escape($instcode).':'.&escape($instseclist),
7562: $homeserver));
7563: }
7564: return $response;
7565: }
7566:
7567: sub auto_validate_class_sec {
7568: my ($cdom,$cnum,$owners,$inst_class) = @_;
7569: my $homeserver = &homeserver($cnum,$cdom);
7570: my $ownerlist;
7571: if (ref($owners) eq 'ARRAY') {
7572: $ownerlist = join(',',@{$owners});
7573: } else {
7574: $ownerlist = $owners;
7575: }
7576: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7577: &escape($ownerlist).':'.$cdom,$homeserver);
7578: return $response;
7579: }
7580:
7581: # ------------------------------------------------------- Course Group routines
7582:
7583: sub get_coursegroups {
7584: my ($cdom,$cnum,$group,$namespace) = @_;
7585: return(&dump($namespace,$cdom,$cnum,$group));
7586: }
7587:
7588: sub modify_coursegroup {
7589: my ($cdom,$cnum,$groupsettings) = @_;
7590: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7591: }
7592:
7593: sub toggle_coursegroup_status {
7594: my ($cdom,$cnum,$group,$action) = @_;
7595: my ($from_namespace,$to_namespace);
7596: if ($action eq 'delete') {
7597: $from_namespace = 'coursegroups';
7598: $to_namespace = 'deleted_groups';
7599: } else {
7600: $from_namespace = 'deleted_groups';
7601: $to_namespace = 'coursegroups';
7602: }
7603: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7604: if (my $tmp = &error(%curr_group)) {
7605: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7606: return ('read error',$tmp);
7607: } else {
7608: my %savedsettings = %curr_group;
7609: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7610: my $deloutcome;
7611: if ($result eq 'ok') {
7612: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7613: } else {
7614: return ('write error',$result);
7615: }
7616: if ($deloutcome eq 'ok') {
7617: return 'ok';
7618: } else {
7619: return ('delete error',$deloutcome);
7620: }
7621: }
7622: }
7623:
7624: sub modify_group_roles {
7625: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7626: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7627: my $role = 'gr/'.&escape($userprivs);
7628: my ($uname,$udom) = split(/:/,$user);
7629: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7630: if ($result eq 'ok') {
7631: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7632: }
7633: return $result;
7634: }
7635:
7636: sub modify_coursegroup_membership {
7637: my ($cdom,$cnum,$membership) = @_;
7638: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7639: return $result;
7640: }
7641:
7642: sub get_active_groups {
7643: my ($udom,$uname,$cdom,$cnum) = @_;
7644: my $now = time;
7645: my %groups = ();
7646: foreach my $key (keys(%env)) {
7647: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7648: my ($start,$end) = split(/\./,$env{$key});
7649: if (($end!=0) && ($end<$now)) { next; }
7650: if (($start!=0) && ($start>$now)) { next; }
7651: if ($1 eq $cdom && $2 eq $cnum) {
7652: $groups{$3} = $env{$key} ;
7653: }
7654: }
7655: }
7656: return %groups;
7657: }
7658:
7659: sub get_group_membership {
7660: my ($cdom,$cnum,$group) = @_;
7661: return(&dump('groupmembership',$cdom,$cnum,$group));
7662: }
7663:
7664: sub get_users_groups {
7665: my ($udom,$uname,$courseid) = @_;
7666: my @usersgroups;
7667: my $cachetime=1800;
7668:
7669: my $hashid="$udom:$uname:$courseid";
7670: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7671: if (defined($cached)) {
7672: @usersgroups = split(/:/,$grouplist);
7673: } else {
7674: $grouplist = '';
7675: my $courseurl = &courseid_to_courseurl($courseid);
7676: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7677: my $access_end = $env{'course.'.$courseid.
7678: '.default_enrollment_end_date'};
7679: my $now = time;
7680: foreach my $key (keys(%roleshash)) {
7681: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7682: my $group = $1;
7683: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7684: my $start = $2;
7685: my $end = $1;
7686: if ($start == -1) { next; } # deleted from group
7687: if (($start!=0) && ($start>$now)) { next; }
7688: if (($end!=0) && ($end<$now)) {
7689: if ($access_end && $access_end < $now) {
7690: if ($access_end - $end < 86400) {
7691: push(@usersgroups,$group);
7692: }
7693: }
7694: next;
7695: }
7696: push(@usersgroups,$group);
7697: }
7698: }
7699: }
7700: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7701: $grouplist = join(':',@usersgroups);
7702: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7703: }
7704: return @usersgroups;
7705: }
7706:
7707: sub devalidate_getgroups_cache {
7708: my ($udom,$uname,$cdom,$cnum)=@_;
7709: my $courseid = $cdom.'_'.$cnum;
7710:
7711: my $hashid="$udom:$uname:$courseid";
7712: &devalidate_cache_new('getgroups',$hashid);
7713: }
7714:
7715: # ------------------------------------------------------------------ Plain Text
7716:
7717: sub plaintext {
7718: my ($short,$type,$cid,$forcedefault) = @_;
7719: if ($short =~ m{^cr/}) {
7720: return (split('/',$short))[-1];
7721: }
7722: if (!defined($cid)) {
7723: $cid = $env{'request.course.id'};
7724: }
7725: my %rolenames = (
7726: Course => 'std',
7727: Community => 'alt1',
7728: );
7729: if ($cid ne '') {
7730: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7731: unless ($forcedefault) {
7732: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7733: &Apache::lonlocal::mt_escape(\$roletext);
7734: return &Apache::lonlocal::mt($roletext);
7735: }
7736: }
7737: }
7738: if ((defined($type)) && (defined($rolenames{$type})) &&
7739: (defined($rolenames{$type})) &&
7740: (defined($prp{$short}{$rolenames{$type}}))) {
7741: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7742: } elsif ($cid ne '') {
7743: my $crstype = $env{'course.'.$cid.'.type'};
7744: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7745: (defined($prp{$short}{$rolenames{$crstype}}))) {
7746: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7747: }
7748: }
7749: return &Apache::lonlocal::mt($prp{$short}{'std'});
7750: }
7751:
7752: # ----------------------------------------------------------------- Assign Role
7753:
7754: sub assignrole {
7755: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7756: $context)=@_;
7757: my $mrole;
7758: if ($role =~ /^cr\//) {
7759: my $cwosec=$url;
7760: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7761: unless (&allowed('ccr',$cwosec)) {
7762: my $refused = 1;
7763: if ($context eq 'requestcourses') {
7764: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7765: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7766: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7767: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7768: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7769: if ($crsenv{'internal.courseowner'} eq
7770: $env{'user.name'}.':'.$env{'user.domain'}) {
7771: $refused = '';
7772: }
7773: }
7774: }
7775: }
7776: }
7777: if ($refused) {
7778: &logthis('Refused custom assignrole: '.
7779: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7780: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7781: return 'refused';
7782: }
7783: }
7784: $mrole='cr';
7785: } elsif ($role =~ /^gr\//) {
7786: my $cwogrp=$url;
7787: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7788: unless (&allowed('mdg',$cwogrp)) {
7789: &logthis('Refused group assignrole: '.
7790: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7791: $env{'user.name'}.' at '.$env{'user.domain'});
7792: return 'refused';
7793: }
7794: $mrole='gr';
7795: } else {
7796: my $cwosec=$url;
7797: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7798: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7799: my $refused;
7800: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7801: if (!(&allowed('c'.$role,$url))) {
7802: $refused = 1;
7803: }
7804: } else {
7805: $refused = 1;
7806: }
7807: if ($refused) {
7808: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7809: if (!$selfenroll && $context eq 'course') {
7810: my %crsenv;
7811: if ($role eq 'cc' || $role eq 'co') {
7812: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7813: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7814: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7815: if ($crsenv{'internal.courseowner'} eq
7816: $env{'user.name'}.':'.$env{'user.domain'}) {
7817: $refused = '';
7818: }
7819: }
7820: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7821: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7822: if ($crsenv{'internal.courseowner'} eq
7823: $env{'user.name'}.':'.$env{'user.domain'}) {
7824: $refused = '';
7825: }
7826: }
7827: }
7828: }
7829: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7830: $refused = '';
7831: } elsif ($context eq 'requestcourses') {
7832: my @possroles = ('st','ta','ep','in','cc','co');
7833: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7834: my $wrongcc;
7835: if ($cnum =~ /^$match_community$/) {
7836: $wrongcc = 1 if ($role eq 'cc');
7837: } else {
7838: $wrongcc = 1 if ($role eq 'co');
7839: }
7840: unless ($wrongcc) {
7841: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7842: if ($crsenv{'internal.courseowner'} eq
7843: $env{'user.name'}.':'.$env{'user.domain'}) {
7844: $refused = '';
7845: }
7846: }
7847: }
7848: } elsif ($context eq 'requestauthor') {
7849: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7850: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
7851: if ($env{'environment.requestauthor'} eq 'automatic') {
7852: $refused = '';
7853: } else {
7854: my %domdefaults = &get_domain_defaults($udom);
7855: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
7856: my $checkbystatus;
7857: if ($env{'user.adv'}) {
7858: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
7859: if ($disposition eq 'automatic') {
7860: $refused = '';
7861: } elsif ($disposition eq '') {
7862: $checkbystatus = 1;
7863: }
7864: } else {
7865: $checkbystatus = 1;
7866: }
7867: if ($checkbystatus) {
7868: if ($env{'environment.inststatus'}) {
7869: my @inststatuses = split(/,/,$env{'environment.inststatus'});
7870: foreach my $type (@inststatuses) {
7871: if (($type ne '') &&
7872: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
7873: $refused = '';
7874: }
7875: }
7876: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
7877: $refused = '';
7878: }
7879: }
7880: }
7881: }
7882: }
7883: }
7884: if ($refused) {
7885: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7886: ' '.$role.' '.$end.' '.$start.' by '.
7887: $env{'user.name'}.' at '.$env{'user.domain'});
7888: return 'refused';
7889: }
7890: }
7891: } elsif ($role eq 'au') {
7892: if ($url ne '/'.$udom.'/') {
7893: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7894: ' to assign author role for '.$uname.':'.$udom.
7895: ' in domain: '.$url.' refused (wrong domain).');
7896: return 'refused';
7897: }
7898: }
7899: $mrole=$role;
7900: }
7901: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7902: "$udom:$uname:$url".'_'."$mrole=$role";
7903: if ($end) { $command.='_'.$end; }
7904: if ($start) {
7905: if ($end) {
7906: $command.='_'.$start;
7907: } else {
7908: $command.='_0_'.$start;
7909: }
7910: }
7911: my $origstart = $start;
7912: my $origend = $end;
7913: my $delflag;
7914: # actually delete
7915: if ($deleteflag) {
7916: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7917: # modify command to delete the role
7918: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7919: "$udom:$uname:$url".'_'."$mrole";
7920: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7921: # set start and finish to negative values for userrolelog
7922: $start=-1;
7923: $end=-1;
7924: $delflag = 1;
7925: }
7926: }
7927: # send command
7928: my $answer=&reply($command,&homeserver($uname,$udom));
7929: # log new user role if status is ok
7930: if ($answer eq 'ok') {
7931: &userrolelog($role,$uname,$udom,$url,$start,$end);
7932: # for course roles, perform group memberships changes triggered by role change.
7933: unless ($role =~ /^gr/) {
7934: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7935: $origstart,$selfenroll,$context);
7936: }
7937: if (($role eq 'cc') || ($role eq 'in') ||
7938: ($role eq 'ep') || ($role eq 'ad') ||
7939: ($role eq 'ta') || ($role eq 'st') ||
7940: ($role=~/^cr/) || ($role eq 'gr') ||
7941: ($role eq 'co')) {
7942: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7943: $selfenroll,$context);
7944: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
7945: ($role eq 'au') || ($role eq 'dc')) {
7946: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7947: $context);
7948: } elsif (($role eq 'ca') || ($role eq 'aa')) {
7949: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7950: $context);
7951: }
7952: if ($role eq 'cc') {
7953: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7954: }
7955: }
7956: return $answer;
7957: }
7958:
7959: sub autoupdate_coowners {
7960: my ($url,$end,$start,$uname,$udom) = @_;
7961: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7962: if (($cdom ne '') && ($cnum ne '')) {
7963: my $now = time;
7964: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7965: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7966: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7967: my $instcode = $coursehash{'internal.coursecode'};
7968: if ($instcode ne '') {
7969: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7970: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7971: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7972: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7973: if ($result eq 'valid') {
7974: if ($coursehash{'internal.co-owners'}) {
7975: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7976: push(@newcoowners,$coowner);
7977: }
7978: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7979: push(@newcoowners,$uname.':'.$udom);
7980: }
7981: @newcoowners = sort(@newcoowners);
7982: } else {
7983: push(@newcoowners,$uname.':'.$udom);
7984: }
7985: } else {
7986: if ($coursehash{'internal.co-owners'}) {
7987: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7988: unless ($coowner eq $uname.':'.$udom) {
7989: push(@newcoowners,$coowner);
7990: }
7991: }
7992: unless (@newcoowners > 0) {
7993: $delcoowners = 1;
7994: $coowners = '';
7995: }
7996: }
7997: }
7998: if (@newcoowners || $delcoowners) {
7999: &store_coowners($cdom,$cnum,$coursehash{'home'},
8000: $delcoowners,@newcoowners);
8001: }
8002: }
8003: }
8004: }
8005: }
8006: }
8007: }
8008:
8009: sub store_coowners {
8010: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8011: my $cid = $cdom.'_'.$cnum;
8012: my ($coowners,$delresult,$putresult);
8013: if (@newcoowners) {
8014: $coowners = join(',',@newcoowners);
8015: my %coownershash = (
8016: 'internal.co-owners' => $coowners,
8017: );
8018: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8019: if ($putresult eq 'ok') {
8020: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8021: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8022: }
8023: }
8024: }
8025: if ($delcoowners) {
8026: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8027: if ($delresult eq 'ok') {
8028: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8029: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8030: }
8031: }
8032: }
8033: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8034: my %crsinfo =
8035: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8036: if (ref($crsinfo{$cid}) eq 'HASH') {
8037: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8038: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8039: }
8040: }
8041: }
8042:
8043: # -------------------------------------------------- Modify user authentication
8044: # Overrides without validation
8045:
8046: sub modifyuserauth {
8047: my ($udom,$uname,$umode,$upass)=@_;
8048: my $uhome=&homeserver($uname,$udom);
8049: unless (&allowed('mau',$udom)) { return 'refused'; }
8050: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8051: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8052: ' in domain '.$env{'request.role.domain'});
8053: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8054: &escape($upass),$uhome);
8055: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8056: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8057: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8058: &log($udom,,$uname,$uhome,
8059: 'Authentication changed by '.$env{'user.domain'}.', '.
8060: $env{'user.name'}.', '.$umode.
8061: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8062: unless ($reply eq 'ok') {
8063: &logthis('Authentication mode error: '.$reply);
8064: return 'error: '.$reply;
8065: }
8066: return 'ok';
8067: }
8068:
8069: # --------------------------------------------------------------- Modify a user
8070:
8071: sub modifyuser {
8072: my ($udom, $uname, $uid,
8073: $umode, $upass, $first,
8074: $middle, $last, $gene,
8075: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8076: $udom= &LONCAPA::clean_domain($udom);
8077: $uname=&LONCAPA::clean_username($uname);
8078: my $showcandelete = 'none';
8079: if (ref($candelete) eq 'ARRAY') {
8080: if (@{$candelete} > 0) {
8081: $showcandelete = join(', ',@{$candelete});
8082: }
8083: }
8084: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8085: $umode.', '.$first.', '.$middle.', '.
8086: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8087: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8088: ' desiredhome not specified').
8089: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8090: ' in domain '.$env{'request.role.domain'});
8091: my $uhome=&homeserver($uname,$udom,'true');
8092: my $newuser;
8093: if ($uhome eq 'no_host') {
8094: $newuser = 1;
8095: }
8096: # ----------------------------------------------------------------- Create User
8097: if (($uhome eq 'no_host') &&
8098: (($umode && $upass) || ($umode eq 'localauth'))) {
8099: my $unhome='';
8100: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8101: $unhome = $desiredhome;
8102: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8103: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8104: } else { # load balancing routine for determining $unhome
8105: my $loadm=10000000;
8106: my %servers = &get_servers($udom,'library');
8107: foreach my $tryserver (keys(%servers)) {
8108: my $answer=reply('load',$tryserver);
8109: if (($answer=~/\d+/) && ($answer<$loadm)) {
8110: $loadm=$answer;
8111: $unhome=$tryserver;
8112: }
8113: }
8114: }
8115: if (($unhome eq '') || ($unhome eq 'no_host')) {
8116: return 'error: unable to find a home server for '.$uname.
8117: ' in domain '.$udom;
8118: }
8119: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8120: &escape($upass),$unhome);
8121: unless ($reply eq 'ok') {
8122: return 'error: '.$reply;
8123: }
8124: $uhome=&homeserver($uname,$udom,'true');
8125: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8126: return 'error: unable verify users home machine.';
8127: }
8128: } # End of creation of new user
8129: # ---------------------------------------------------------------------- Add ID
8130: if ($uid) {
8131: $uid=~tr/A-Z/a-z/;
8132: my %uidhash=&idrget($udom,$uname);
8133: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8134: && (!$forceid)) {
8135: unless ($uid eq $uidhash{$uname}) {
8136: return 'error: user id "'.$uid.'" does not match '.
8137: 'current user id "'.$uidhash{$uname}.'".';
8138: }
8139: } else {
8140: &idput($udom,($uname => $uid));
8141: }
8142: }
8143: # -------------------------------------------------------------- Add names, etc
8144: my @tmp=&get('environment',
8145: ['firstname','middlename','lastname','generation','id',
8146: 'permanentemail','inststatus'],
8147: $udom,$uname);
8148: my (%names,%oldnames);
8149: if ($tmp[0] =~ m/^error:.*/) {
8150: %names=();
8151: } else {
8152: %names = @tmp;
8153: %oldnames = %names;
8154: }
8155: #
8156: # If name, email and/or uid are blank (e.g., because an uploaded file
8157: # of users did not contain them), do not overwrite existing values
8158: # unless field is in $candelete array ref.
8159: #
8160:
8161: my @fields = ('firstname','middlename','lastname','generation',
8162: 'permanentemail','id');
8163: my %newvalues;
8164: if (ref($candelete) eq 'ARRAY') {
8165: foreach my $field (@fields) {
8166: if (grep(/^\Q$field\E$/,@{$candelete})) {
8167: if ($field eq 'firstname') {
8168: $names{$field} = $first;
8169: } elsif ($field eq 'middlename') {
8170: $names{$field} = $middle;
8171: } elsif ($field eq 'lastname') {
8172: $names{$field} = $last;
8173: } elsif ($field eq 'generation') {
8174: $names{$field} = $gene;
8175: } elsif ($field eq 'permanentemail') {
8176: $names{$field} = $email;
8177: } elsif ($field eq 'id') {
8178: $names{$field} = $uid;
8179: }
8180: }
8181: }
8182: }
8183: if ($first) { $names{'firstname'} = $first; }
8184: if (defined($middle)) { $names{'middlename'} = $middle; }
8185: if ($last) { $names{'lastname'} = $last; }
8186: if (defined($gene)) { $names{'generation'} = $gene; }
8187: if ($email) {
8188: $email=~s/[^\w\@\.\-\,]//gs;
8189: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8190: }
8191: if ($uid) { $names{'id'} = $uid; }
8192: if (defined($inststatus)) {
8193: $names{'inststatus'} = '';
8194: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8195: if (ref($usertypes) eq 'HASH') {
8196: my @okstatuses;
8197: foreach my $item (split(/:/,$inststatus)) {
8198: if (defined($usertypes->{$item})) {
8199: push(@okstatuses,$item);
8200: }
8201: }
8202: if (@okstatuses) {
8203: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8204: }
8205: }
8206: }
8207: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8208: $umode.', '.$first.', '.$middle.', '.
8209: $last.', '.$gene.', '.$email.', '.$inststatus;
8210: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8211: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8212: } else {
8213: $logmsg .= ' during self creation';
8214: }
8215: my $changed;
8216: if ($newuser) {
8217: $changed = 1;
8218: } else {
8219: foreach my $field (@fields) {
8220: if ($names{$field} ne $oldnames{$field}) {
8221: $changed = 1;
8222: last;
8223: }
8224: }
8225: }
8226: unless ($changed) {
8227: $logmsg = 'No changes in user information needed for: '.$logmsg;
8228: &logthis($logmsg);
8229: return 'ok';
8230: }
8231: my $reply = &put('environment', \%names, $udom,$uname);
8232: if ($reply ne 'ok') {
8233: return 'error: '.$reply;
8234: }
8235: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8236: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8237: }
8238: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8239: &devalidate_cache_new('namescache',$uname.':'.$udom);
8240: $logmsg = 'Success modifying user '.$logmsg;
8241: &logthis($logmsg);
8242: return 'ok';
8243: }
8244:
8245: # -------------------------------------------------------------- Modify student
8246:
8247: sub modifystudent {
8248: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8249: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8250: $selfenroll,$context,$inststatus)=@_;
8251: if (!$cid) {
8252: unless ($cid=$env{'request.course.id'}) {
8253: return 'not_in_class';
8254: }
8255: }
8256: # --------------------------------------------------------------- Make the user
8257: my $reply=&modifyuser
8258: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8259: $desiredhome,$email,$inststatus);
8260: unless ($reply eq 'ok') { return $reply; }
8261: # This will cause &modify_student_enrollment to get the uid from the
8262: # students environment
8263: $uid = undef if (!$forceid);
8264: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8265: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
8266: return $reply;
8267: }
8268:
8269: sub modify_student_enrollment {
8270: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
8271: my ($cdom,$cnum,$chome);
8272: if (!$cid) {
8273: unless ($cid=$env{'request.course.id'}) {
8274: return 'not_in_class';
8275: }
8276: $cdom=$env{'course.'.$cid.'.domain'};
8277: $cnum=$env{'course.'.$cid.'.num'};
8278: } else {
8279: ($cdom,$cnum)=split(/_/,$cid);
8280: }
8281: $chome=$env{'course.'.$cid.'.home'};
8282: if (!$chome) {
8283: $chome=&homeserver($cnum,$cdom);
8284: }
8285: if (!$chome) { return 'unknown_course'; }
8286: # Make sure the user exists
8287: my $uhome=&homeserver($uname,$udom);
8288: if (($uhome eq '') || ($uhome eq 'no_host')) {
8289: return 'error: no such user';
8290: }
8291: # Get student data if we were not given enough information
8292: if (!defined($first) || $first eq '' ||
8293: !defined($last) || $last eq '' ||
8294: !defined($uid) || $uid eq '' ||
8295: !defined($middle) || $middle eq '' ||
8296: !defined($gene) || $gene eq '') {
8297: # They did not supply us with enough data to enroll the student, so
8298: # we need to pick up more information.
8299: my %tmp = &get('environment',
8300: ['firstname','middlename','lastname', 'generation','id']
8301: ,$udom,$uname);
8302:
8303: #foreach my $key (keys(%tmp)) {
8304: # &logthis("key $key = ".$tmp{$key});
8305: #}
8306: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8307: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8308: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8309: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8310: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8311: }
8312: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8313: my $user = "$uname:$udom";
8314: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8315: my $reply=cput('classlist',
8316: {$user =>
8317: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
8318: $cdom,$cnum);
8319: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8320: &devalidate_getsection_cache($udom,$uname,$cid);
8321: } else {
8322: return 'error: '.$reply;
8323: }
8324: # Add student role to user
8325: my $uurl='/'.$cid;
8326: $uurl=~s/\_/\//g;
8327: if ($usec) {
8328: $uurl.='/'.$usec;
8329: }
8330: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8331: $selfenroll,$context);
8332: if ($result ne 'ok') {
8333: if ($old_entry{$user} ne '') {
8334: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8335: } else {
8336: $reply = &del('classlist',[$user],$cdom,$cnum);
8337: }
8338: }
8339: return $result;
8340: }
8341:
8342: sub format_name {
8343: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8344: my $name;
8345: if ($first ne 'lastname') {
8346: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8347: } else {
8348: if ($lastname=~/\S/) {
8349: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8350: $name=~s/\s+,/,/;
8351: } else {
8352: $name.= $firstname.' '.$middlename.' '.$generation;
8353: }
8354: }
8355: $name=~s/^\s+//;
8356: $name=~s/\s+$//;
8357: $name=~s/\s+/ /g;
8358: return $name;
8359: }
8360:
8361: # ------------------------------------------------- Write to course preferences
8362:
8363: sub writecoursepref {
8364: my ($courseid,%prefs)=@_;
8365: $courseid=~s/^\///;
8366: $courseid=~s/\_/\//g;
8367: my ($cdomain,$cnum)=split(/\//,$courseid);
8368: my $chome=homeserver($cnum,$cdomain);
8369: if (($chome eq '') || ($chome eq 'no_host')) {
8370: return 'error: no such course';
8371: }
8372: my $cstring='';
8373: foreach my $pref (keys(%prefs)) {
8374: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8375: }
8376: $cstring=~s/\&$//;
8377: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8378: }
8379:
8380: # ---------------------------------------------------------- Make/modify course
8381:
8382: sub createcourse {
8383: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8384: $course_owner,$crstype,$cnum,$context,$category)=@_;
8385: $url=&declutter($url);
8386: my $cid='';
8387: if ($context eq 'requestcourses') {
8388: my $can_create = 0;
8389: my ($ownername,$ownerdom) = split(':',$course_owner);
8390: if ($udom eq $ownerdom) {
8391: if (&usertools_access($ownername,$ownerdom,$category,undef,
8392: $context)) {
8393: $can_create = 1;
8394: }
8395: } else {
8396: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8397: $category);
8398: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8399: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8400: if (@curr > 0) {
8401: my @options = qw(approval validate autolimit);
8402: my $optregex = join('|',@options);
8403: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8404: $can_create = 1;
8405: }
8406: }
8407: }
8408: }
8409: if ($can_create) {
8410: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8411: unless (&allowed('ccc',$udom)) {
8412: return 'refused';
8413: }
8414: }
8415: } else {
8416: return 'refused';
8417: }
8418: } elsif (!&allowed('ccc',$udom)) {
8419: return 'refused';
8420: }
8421: # --------------------------------------------------------------- Get Unique ID
8422: my $uname;
8423: if ($cnum =~ /^$match_courseid$/) {
8424: my $chome=&homeserver($cnum,$udom,'true');
8425: if (($chome eq '') || ($chome eq 'no_host')) {
8426: $uname = $cnum;
8427: } else {
8428: $uname = &generate_coursenum($udom,$crstype);
8429: }
8430: } else {
8431: $uname = &generate_coursenum($udom,$crstype);
8432: }
8433: return $uname if ($uname =~ /^error/);
8434: # -------------------------------------------------- Check supplied server name
8435: if (!defined($course_server)) {
8436: if (defined(&domain($udom,'primary'))) {
8437: $course_server = &domain($udom,'primary');
8438: } else {
8439: $course_server = $env{'user.home'};
8440: }
8441: }
8442: my %host_servers =
8443: &Apache::lonnet::get_servers($udom,'library');
8444: unless ($host_servers{$course_server}) {
8445: return 'error: invalid home server for course: '.$course_server;
8446: }
8447: # ------------------------------------------------------------- Make the course
8448: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8449: $course_server);
8450: unless ($reply eq 'ok') { return 'error: '.$reply; }
8451: my $uhome=&homeserver($uname,$udom,'true');
8452: if (($uhome eq '') || ($uhome eq 'no_host')) {
8453: return 'error: no such course';
8454: }
8455: # ----------------------------------------------------------------- Course made
8456: # log existence
8457: my $now = time;
8458: my $newcourse = {
8459: $udom.'_'.$uname => {
8460: description => $description,
8461: inst_code => $inst_code,
8462: owner => $course_owner,
8463: type => $crstype,
8464: creator => $env{'user.name'}.':'.
8465: $env{'user.domain'},
8466: created => $now,
8467: context => $context,
8468: },
8469: };
8470: &courseidput($udom,$newcourse,$uhome,'notime');
8471: # set toplevel url
8472: my $topurl=$url;
8473: unless ($nonstandard) {
8474: # ------------------------------------------ For standard courses, make top url
8475: my $mapurl=&clutter($url);
8476: if ($mapurl eq '/res/') { $mapurl=''; }
8477: $env{'form.initmap'}=(<<ENDINITMAP);
8478: <map>
8479: <resource id="1" type="start"></resource>
8480: <resource id="2" src="$mapurl"></resource>
8481: <resource id="3" type="finish"></resource>
8482: <link index="1" from="1" to="2"></link>
8483: <link index="2" from="2" to="3"></link>
8484: </map>
8485: ENDINITMAP
8486: $topurl=&declutter(
8487: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8488: );
8489: }
8490: # ----------------------------------------------------------- Write preferences
8491: &writecoursepref($udom.'_'.$uname,
8492: ('description' => $description,
8493: 'url' => $topurl,
8494: 'internal.creator' => $env{'user.name'}.':'.
8495: $env{'user.domain'},
8496: 'internal.created' => $now,
8497: 'internal.creationcontext' => $context)
8498: );
8499: return '/'.$udom.'/'.$uname;
8500: }
8501:
8502: # ------------------------------------------------------------------- Create ID
8503: sub generate_coursenum {
8504: my ($udom,$crstype) = @_;
8505: my $domdesc = &domain($udom);
8506: return 'error: invalid domain' if ($domdesc eq '');
8507: my $first;
8508: if ($crstype eq 'Community') {
8509: $first = '0';
8510: } else {
8511: $first = int(1+rand(9));
8512: }
8513: my $uname=$first.
8514: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8515: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8516: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8517: # ----------------------------------------------- Make sure that does not exist
8518: my $uhome=&homeserver($uname,$udom,'true');
8519: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8520: if ($crstype eq 'Community') {
8521: $first = '0';
8522: } else {
8523: $first = int(1+rand(9));
8524: }
8525: $uname=$first.
8526: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8527: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8528: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8529: $uhome=&homeserver($uname,$udom,'true');
8530: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8531: return 'error: unable to generate unique course-ID';
8532: }
8533: }
8534: return $uname;
8535: }
8536:
8537: sub is_course {
8538: my ($cdom, $cnum) = scalar(@_) == 1 ?
8539: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8540:
8541: return unless $cdom and $cnum;
8542:
8543: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8544: '.');
8545:
8546: return unless exists($courses{$cdom.'_'.$cnum});
8547: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8548: }
8549:
8550: sub store_userdata {
8551: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8552: my $result;
8553: if ($datakey ne '') {
8554: if (ref($storehash) eq 'HASH') {
8555: if ($udom eq '' || $uname eq '') {
8556: $udom = $env{'user.domain'};
8557: $uname = $env{'user.name'};
8558: }
8559: my $uhome=&homeserver($uname,$udom);
8560: if (($uhome eq '') || ($uhome eq 'no_host')) {
8561: $result = 'error: no_host';
8562: } else {
8563: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8564: $storehash->{'host'} = $perlvar{'lonHostID'};
8565:
8566: my $namevalue='';
8567: foreach my $key (keys(%{$storehash})) {
8568: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8569: }
8570: $namevalue=~s/\&$//;
8571: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8572: $namevalue,$uhome);
8573: }
8574: } else {
8575: $result = 'error: data to store was not a hash reference';
8576: }
8577: } else {
8578: $result= 'error: invalid requestkey';
8579: }
8580: return $result;
8581: }
8582:
8583: # ---------------------------------------------------------- Assign Custom Role
8584:
8585: sub assigncustomrole {
8586: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8587: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8588: $end,$start,$deleteflag,$selfenroll,$context);
8589: }
8590:
8591: # ----------------------------------------------------------------- Revoke Role
8592:
8593: sub revokerole {
8594: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8595: my $now=time;
8596: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8597: }
8598:
8599: # ---------------------------------------------------------- Revoke Custom Role
8600:
8601: sub revokecustomrole {
8602: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8603: my $now=time;
8604: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8605: $deleteflag,$selfenroll,$context);
8606: }
8607:
8608: # ------------------------------------------------------------ Disk usage
8609: sub diskusage {
8610: my ($udom,$uname,$directorypath,$getpropath)=@_;
8611: $directorypath =~ s/\/$//;
8612: my $listing=&reply('du2:'.&escape($directorypath).':'
8613: .&escape($getpropath).':'.&escape($uname).':'
8614: .&escape($udom),homeserver($uname,$udom));
8615: if ($listing eq 'unknown_cmd') {
8616: if ($getpropath) {
8617: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8618: }
8619: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8620: }
8621: return $listing;
8622: }
8623:
8624: sub is_locked {
8625: my ($file_name, $domain, $user, $which) = @_;
8626: my @check;
8627: my $is_locked;
8628: push (@check,$file_name);
8629: my %locked = &get('file_permissions',\@check,
8630: $env{'user.domain'},$env{'user.name'});
8631: my ($tmp)=keys(%locked);
8632: if ($tmp=~/^error:/) { undef(%locked); }
8633:
8634: if (ref($locked{$file_name}) eq 'ARRAY') {
8635: $is_locked = 'false';
8636: foreach my $entry (@{$locked{$file_name}}) {
8637: if (ref($entry) eq 'ARRAY') {
8638: $is_locked = 'true';
8639: if (ref($which) eq 'ARRAY') {
8640: push(@{$which},$entry);
8641: } else {
8642: last;
8643: }
8644: }
8645: }
8646: } else {
8647: $is_locked = 'false';
8648: }
8649: return $is_locked;
8650: }
8651:
8652: sub declutter_portfile {
8653: my ($file) = @_;
8654: $file =~ s{^(/portfolio/|portfolio/)}{/};
8655: return $file;
8656: }
8657:
8658: # ------------------------------------------------------------- Mark as Read Only
8659:
8660: sub mark_as_readonly {
8661: my ($domain,$user,$files,$what) = @_;
8662: my %current_permissions = &dump('file_permissions',$domain,$user);
8663: my ($tmp)=keys(%current_permissions);
8664: if ($tmp=~/^error:/) { undef(%current_permissions); }
8665: foreach my $file (@{$files}) {
8666: $file = &declutter_portfile($file);
8667: push(@{$current_permissions{$file}},$what);
8668: }
8669: &put('file_permissions',\%current_permissions,$domain,$user);
8670: return;
8671: }
8672:
8673: # ------------------------------------------------------------Save Selected Files
8674:
8675: sub save_selected_files {
8676: my ($user, $path, @files) = @_;
8677: my $filename = $user."savedfiles";
8678: my @other_files = &files_not_in_path($user, $path);
8679: open (OUT, '>'.$tmpdir.$filename);
8680: foreach my $file (@files) {
8681: print (OUT $env{'form.currentpath'}.$file."\n");
8682: }
8683: foreach my $file (@other_files) {
8684: print (OUT $file."\n");
8685: }
8686: close (OUT);
8687: return 'ok';
8688: }
8689:
8690: sub clear_selected_files {
8691: my ($user) = @_;
8692: my $filename = $user."savedfiles";
8693: open (OUT, '>'.LONCAPA::tempdir().$filename);
8694: print (OUT undef);
8695: close (OUT);
8696: return ("ok");
8697: }
8698:
8699: sub files_in_path {
8700: my ($user, $path) = @_;
8701: my $filename = $user."savedfiles";
8702: my %return_files;
8703: open (IN, '<'.LONCAPA::tempdir().$filename);
8704: while (my $line_in = <IN>) {
8705: chomp ($line_in);
8706: my @paths_and_file = split (m!/!, $line_in);
8707: my $file_part = pop (@paths_and_file);
8708: my $path_part = join ('/', @paths_and_file);
8709: $path_part.='/';
8710: my $path_and_file = $path_part.$file_part;
8711: if ($path_part eq $path) {
8712: $return_files{$file_part}= 'selected';
8713: }
8714: }
8715: close (IN);
8716: return (\%return_files);
8717: }
8718:
8719: # called in portfolio select mode, to show files selected NOT in current directory
8720: sub files_not_in_path {
8721: my ($user, $path) = @_;
8722: my $filename = $user."savedfiles";
8723: my @return_files;
8724: my $path_part;
8725: open(IN, '<'.LONCAPA::.$filename);
8726: while (my $line = <IN>) {
8727: #ok, I know it's clunky, but I want it to work
8728: my @paths_and_file = split(m|/|, $line);
8729: my $file_part = pop(@paths_and_file);
8730: chomp($file_part);
8731: my $path_part = join('/', @paths_and_file);
8732: $path_part .= '/';
8733: my $path_and_file = $path_part.$file_part;
8734: if ($path_part ne $path) {
8735: push(@return_files, ($path_and_file));
8736: }
8737: }
8738: close(OUT);
8739: return (@return_files);
8740: }
8741:
8742: #----------------------------------------------Get portfolio file permissions
8743:
8744: sub get_portfile_permissions {
8745: my ($domain,$user) = @_;
8746: my %current_permissions = &dump('file_permissions',$domain,$user);
8747: my ($tmp)=keys(%current_permissions);
8748: if ($tmp=~/^error:/) { undef(%current_permissions); }
8749: return \%current_permissions;
8750: }
8751:
8752: #---------------------------------------------Get portfolio file access controls
8753:
8754: sub get_access_controls {
8755: my ($current_permissions,$group,$file) = @_;
8756: my %access;
8757: my $real_file = $file;
8758: $file =~ s/\.meta$//;
8759: if (defined($file)) {
8760: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8761: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8762: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8763: }
8764: }
8765: } else {
8766: foreach my $key (keys(%{$current_permissions})) {
8767: if ($key =~ /\0accesscontrol$/) {
8768: if (defined($group)) {
8769: if ($key !~ m-^\Q$group\E/-) {
8770: next;
8771: }
8772: }
8773: my ($fullpath) = split(/\0/,$key);
8774: if (ref($$current_permissions{$key}) eq 'HASH') {
8775: foreach my $control (keys(%{$$current_permissions{$key}})) {
8776: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8777: }
8778: }
8779: }
8780: }
8781: }
8782: return %access;
8783: }
8784:
8785: sub modify_access_controls {
8786: my ($file_name,$changes,$domain,$user)=@_;
8787: my ($outcome,$deloutcome);
8788: my %store_permissions;
8789: my %new_values;
8790: my %new_control;
8791: my %translation;
8792: my @deletions = ();
8793: my $now = time;
8794: if (exists($$changes{'activate'})) {
8795: if (ref($$changes{'activate'}) eq 'HASH') {
8796: my @newitems = sort(keys(%{$$changes{'activate'}}));
8797: my $numnew = scalar(@newitems);
8798: for (my $i=0; $i<$numnew; $i++) {
8799: my $newkey = $newitems[$i];
8800: my $newid = &Apache::loncommon::get_cgi_id();
8801: if ($newkey =~ /^\d+:/) {
8802: $newkey =~ s/^(\d+)/$newid/;
8803: $translation{$1} = $newid;
8804: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8805: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8806: $translation{$1} = $newid;
8807: }
8808: $new_values{$file_name."\0".$newkey} =
8809: $$changes{'activate'}{$newitems[$i]};
8810: $new_control{$newkey} = $now;
8811: }
8812: }
8813: }
8814: my %todelete;
8815: my %changed_items;
8816: foreach my $action ('delete','update') {
8817: if (exists($$changes{$action})) {
8818: if (ref($$changes{$action}) eq 'HASH') {
8819: foreach my $key (keys(%{$$changes{$action}})) {
8820: my ($itemnum) = ($key =~ /^([^:]+):/);
8821: if ($action eq 'delete') {
8822: $todelete{$itemnum} = 1;
8823: } else {
8824: $changed_items{$itemnum} = $key;
8825: }
8826: }
8827: }
8828: }
8829: }
8830: # get lock on access controls for file.
8831: my $lockhash = {
8832: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8833: ':'.$env{'user.domain'},
8834: };
8835: my $tries = 0;
8836: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8837:
8838: while (($gotlock ne 'ok') && $tries <3) {
8839: $tries ++;
8840: sleep 1;
8841: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8842: }
8843: if ($gotlock eq 'ok') {
8844: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8845: my ($tmp)=keys(%curr_permissions);
8846: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8847: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8848: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8849: if (ref($curr_controls) eq 'HASH') {
8850: foreach my $control_item (keys(%{$curr_controls})) {
8851: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8852: if (defined($todelete{$itemnum})) {
8853: push(@deletions,$file_name."\0".$control_item);
8854: } else {
8855: if (defined($changed_items{$itemnum})) {
8856: $new_control{$changed_items{$itemnum}} = $now;
8857: push(@deletions,$file_name."\0".$control_item);
8858: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8859: } else {
8860: $new_control{$control_item} = $$curr_controls{$control_item};
8861: }
8862: }
8863: }
8864: }
8865: }
8866: my ($group);
8867: if (&is_course($domain,$user)) {
8868: ($group,my $file) = split(/\//,$file_name,2);
8869: }
8870: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8871: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8872: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8873: # remove lock
8874: my @del_lock = ($file_name."\0".'locked_access_records');
8875: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8876: my $sqlresult =
8877: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8878: $group);
8879: } else {
8880: $outcome = "error: could not obtain lockfile\n";
8881: }
8882: return ($outcome,$deloutcome,\%new_values,\%translation);
8883: }
8884:
8885: sub make_public_indefinitely {
8886: my ($requrl) = @_;
8887: my $now = time;
8888: my $action = 'activate';
8889: my $aclnum = 0;
8890: if (&is_portfolio_url($requrl)) {
8891: my (undef,$udom,$unum,$file_name,$group) =
8892: &parse_portfolio_url($requrl);
8893: my $current_perms = &get_portfile_permissions($udom,$unum);
8894: my %access_controls = &get_access_controls($current_perms,
8895: $group,$file_name);
8896: foreach my $key (keys(%{$access_controls{$file_name}})) {
8897: my ($num,$scope,$end,$start) =
8898: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8899: if ($scope eq 'public') {
8900: if ($start <= $now && $end == 0) {
8901: $action = 'none';
8902: } else {
8903: $action = 'update';
8904: $aclnum = $num;
8905: }
8906: last;
8907: }
8908: }
8909: if ($action eq 'none') {
8910: return 'ok';
8911: } else {
8912: my %changes;
8913: my $newend = 0;
8914: my $newstart = $now;
8915: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8916: $changes{$action}{$newkey} = {
8917: type => 'public',
8918: time => {
8919: start => $newstart,
8920: end => $newend,
8921: },
8922: };
8923: my ($outcome,$deloutcome,$new_values,$translation) =
8924: &modify_access_controls($file_name,\%changes,$udom,$unum);
8925: return $outcome;
8926: }
8927: } else {
8928: return 'invalid';
8929: }
8930: }
8931:
8932: #------------------------------------------------------Get Marked as Read Only
8933:
8934: sub get_marked_as_readonly {
8935: my ($domain,$user,$what,$group) = @_;
8936: my $current_permissions = &get_portfile_permissions($domain,$user);
8937: my @readonly_files;
8938: my $cmp1=$what;
8939: if (ref($what)) { $cmp1=join('',@{$what}) };
8940: while (my ($file_name,$value) = each(%{$current_permissions})) {
8941: if (defined($group)) {
8942: if ($file_name !~ m-^\Q$group\E/-) {
8943: next;
8944: }
8945: }
8946: if (ref($value) eq "ARRAY"){
8947: foreach my $stored_what (@{$value}) {
8948: my $cmp2=$stored_what;
8949: if (ref($stored_what) eq 'ARRAY') {
8950: $cmp2=join('',@{$stored_what});
8951: }
8952: if ($cmp1 eq $cmp2) {
8953: push(@readonly_files, $file_name);
8954: last;
8955: } elsif (!defined($what)) {
8956: push(@readonly_files, $file_name);
8957: last;
8958: }
8959: }
8960: }
8961: }
8962: return @readonly_files;
8963: }
8964: #-----------------------------------------------------------Get Marked as Read Only Hash
8965:
8966: sub get_marked_as_readonly_hash {
8967: my ($current_permissions,$group,$what) = @_;
8968: my %readonly_files;
8969: while (my ($file_name,$value) = each(%{$current_permissions})) {
8970: if (defined($group)) {
8971: if ($file_name !~ m-^\Q$group\E/-) {
8972: next;
8973: }
8974: }
8975: if (ref($value) eq "ARRAY"){
8976: foreach my $stored_what (@{$value}) {
8977: if (ref($stored_what) eq 'ARRAY') {
8978: foreach my $lock_descriptor(@{$stored_what}) {
8979: if ($lock_descriptor eq 'graded') {
8980: $readonly_files{$file_name} = 'graded';
8981: } elsif ($lock_descriptor eq 'handback') {
8982: $readonly_files{$file_name} = 'handback';
8983: } else {
8984: if (!exists($readonly_files{$file_name})) {
8985: $readonly_files{$file_name} = 'locked';
8986: }
8987: }
8988: }
8989: }
8990: }
8991: }
8992: }
8993: return %readonly_files;
8994: }
8995: # ------------------------------------------------------------ Unmark as Read Only
8996:
8997: sub unmark_as_readonly {
8998: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8999: # for portfolio submissions, $what contains [$symb,$crsid]
9000: my ($domain,$user,$what,$file_name,$group) = @_;
9001: $file_name = &declutter_portfile($file_name);
9002: my $symb_crs = $what;
9003: if (ref($what)) { $symb_crs=join('',@$what); }
9004: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9005: my ($tmp)=keys(%current_permissions);
9006: if ($tmp=~/^error:/) { undef(%current_permissions); }
9007: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9008: foreach my $file (@readonly_files) {
9009: my $clean_file = &declutter_portfile($file);
9010: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9011: my $current_locks = $current_permissions{$file};
9012: my @new_locks;
9013: my @del_keys;
9014: if (ref($current_locks) eq "ARRAY"){
9015: foreach my $locker (@{$current_locks}) {
9016: my $compare=$locker;
9017: if (ref($locker) eq 'ARRAY') {
9018: $compare=join('',@{$locker});
9019: if ($compare ne $symb_crs) {
9020: push(@new_locks, $locker);
9021: }
9022: }
9023: }
9024: if (scalar(@new_locks) > 0) {
9025: $current_permissions{$file} = \@new_locks;
9026: } else {
9027: push(@del_keys, $file);
9028: &del('file_permissions',\@del_keys, $domain, $user);
9029: delete($current_permissions{$file});
9030: }
9031: }
9032: }
9033: &put('file_permissions',\%current_permissions,$domain,$user);
9034: return;
9035: }
9036:
9037: # ------------------------------------------------------------ Directory lister
9038:
9039: sub dirlist {
9040: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9041: $uri=~s/^\///;
9042: $uri=~s/\/$//;
9043: my ($udom, $uname);
9044: if ($getuserdir) {
9045: $udom = $userdomain;
9046: $uname = $username;
9047: } else {
9048: (undef,$udom,$uname)=split(/\//,$uri);
9049: if(defined($userdomain)) {
9050: $udom = $userdomain;
9051: }
9052: if(defined($username)) {
9053: $uname = $username;
9054: }
9055: }
9056: my ($dirRoot,$listing,@listing_results);
9057:
9058: $dirRoot = $perlvar{'lonDocRoot'};
9059: if (defined($getpropath)) {
9060: $dirRoot = &propath($udom,$uname);
9061: $dirRoot =~ s/\/$//;
9062: } elsif (defined($getuserdir)) {
9063: my $subdir=$uname.'__';
9064: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9065: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9066: ."/$udom/$subdir/$uname";
9067: } elsif (defined($alternateRoot)) {
9068: $dirRoot = $alternateRoot;
9069: }
9070:
9071: if($udom) {
9072: if($uname) {
9073: my $uhome = &homeserver($uname,$udom);
9074: if ($uhome eq 'no_host') {
9075: return ([],'no_host');
9076: }
9077: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9078: .$getuserdir.':'.&escape($dirRoot)
9079: .':'.&escape($uname).':'.&escape($udom),$uhome);
9080: if ($listing eq 'unknown_cmd') {
9081: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9082: } else {
9083: @listing_results = map { &unescape($_); } split(/:/,$listing);
9084: }
9085: if ($listing eq 'unknown_cmd') {
9086: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9087: @listing_results = split(/:/,$listing);
9088: } else {
9089: @listing_results = map { &unescape($_); } split(/:/,$listing);
9090: }
9091: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9092: ($listing eq 'rejected') || ($listing eq 'refused') ||
9093: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9094: return ([],$listing);
9095: } else {
9096: return (\@listing_results);
9097: }
9098: } elsif(!$alternateRoot) {
9099: my (%allusers,%listerror);
9100: my %servers = &get_servers($udom,'library');
9101: foreach my $tryserver (keys(%servers)) {
9102: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9103: &escape($udom),$tryserver);
9104: if ($listing eq 'unknown_cmd') {
9105: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9106: $udom, $tryserver);
9107: } else {
9108: @listing_results = map { &unescape($_); } split(/:/,$listing);
9109: }
9110: if ($listing eq 'unknown_cmd') {
9111: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9112: $udom, $tryserver);
9113: @listing_results = split(/:/,$listing);
9114: } else {
9115: @listing_results =
9116: map { &unescape($_); } split(/:/,$listing);
9117: }
9118: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9119: ($listing eq 'rejected') || ($listing eq 'refused') ||
9120: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9121: $listerror{$tryserver} = $listing;
9122: } else {
9123: foreach my $line (@listing_results) {
9124: my ($entry) = split(/&/,$line,2);
9125: $allusers{$entry} = 1;
9126: }
9127: }
9128: }
9129: my @alluserslist=();
9130: foreach my $user (sort(keys(%allusers))) {
9131: push(@alluserslist,$user.'&user');
9132: }
9133: return (\@alluserslist);
9134: } else {
9135: return ([],'missing username');
9136: }
9137: } elsif(!defined($getpropath)) {
9138: my $path = $perlvar{'lonDocRoot'}.'/res/';
9139: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9140: return (\@all_domains);
9141: } else {
9142: return ([],'missing domain');
9143: }
9144: }
9145:
9146: # --------------------------------------------- GetFileTimestamp
9147: # This function utilizes dirlist and returns the date stamp for
9148: # when it was last modified. It will also return an error of -1
9149: # if an error occurs
9150:
9151: sub GetFileTimestamp {
9152: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9153: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9154: $studentName = &LONCAPA::clean_username($studentName);
9155: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9156: undef,$getuserdir);
9157: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9158: return -1;
9159: }
9160: if (ref($fileref) eq 'ARRAY') {
9161: my @stats = split('&',$fileref->[0]);
9162: # @stats contains first the filename, then the stat output
9163: return $stats[10]; # so this is 10 instead of 9.
9164: } else {
9165: return -1;
9166: }
9167: }
9168:
9169: sub stat_file {
9170: my ($uri) = @_;
9171: $uri = &clutter_with_no_wrapper($uri);
9172:
9173: my ($udom,$uname,$file);
9174: if ($uri =~ m-^/(uploaded|editupload)/-) {
9175: ($udom,$uname,$file) =
9176: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9177: $file = 'userfiles/'.$file;
9178: }
9179: if ($uri =~ m-^/res/-) {
9180: ($udom,$uname) =
9181: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9182: $file = $uri;
9183: }
9184:
9185: if (!$udom || !$uname || !$file) {
9186: # unable to handle the uri
9187: return ();
9188: }
9189: my $getpropath;
9190: if ($file =~ /^userfiles\//) {
9191: $getpropath = 1;
9192: }
9193: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9194: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9195: return ();
9196: } else {
9197: if (ref($listref) eq 'ARRAY') {
9198: my @stats = split('&',$listref->[0]);
9199: shift(@stats); #filename is first
9200: return @stats;
9201: }
9202: }
9203: return ();
9204: }
9205:
9206: # -------------------------------------------------------- Value of a Condition
9207:
9208: # gets the value of a specific preevaluated condition
9209: # stored in the string $env{user.state.<cid>}
9210: # or looks up a condition reference in the bighash and if if hasn't
9211: # already been evaluated recurses into docondval to get the value of
9212: # the condition, then memoizing it to
9213: # $env{user.state.<cid>.<condition>}
9214: sub directcondval {
9215: my $number=shift;
9216: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9217: &Apache::lonuserstate::evalstate();
9218: }
9219: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9220: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9221: } elsif ($number =~ /^_/) {
9222: my $sub_condition;
9223: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9224: &GDBM_READER(),0640)) {
9225: $sub_condition=$bighash{'conditions'.$number};
9226: untie(%bighash);
9227: }
9228: my $value = &docondval($sub_condition);
9229: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9230: return $value;
9231: }
9232: if ($env{'user.state.'.$env{'request.course.id'}}) {
9233: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9234: } else {
9235: return 2;
9236: }
9237: }
9238:
9239: # get the collection of conditions for this resource
9240: sub condval {
9241: my $condidx=shift;
9242: my $allpathcond='';
9243: foreach my $cond (split(/\|/,$condidx)) {
9244: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9245: $allpathcond.=
9246: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9247: }
9248: }
9249: $allpathcond=~s/\|$//;
9250: return &docondval($allpathcond);
9251: }
9252:
9253: #evaluates an expression of conditions
9254: sub docondval {
9255: my ($allpathcond) = @_;
9256: my $result=0;
9257: if ($env{'request.course.id'}
9258: && defined($allpathcond)) {
9259: my $operand='|';
9260: my @stack;
9261: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9262: if ($chunk eq '(') {
9263: push @stack,($operand,$result);
9264: } elsif ($chunk eq ')') {
9265: my $before=pop @stack;
9266: if (pop @stack eq '&') {
9267: $result=$result>$before?$before:$result;
9268: } else {
9269: $result=$result>$before?$result:$before;
9270: }
9271: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9272: $operand=$chunk;
9273: } else {
9274: my $new=directcondval($chunk);
9275: if ($operand eq '&') {
9276: $result=$result>$new?$new:$result;
9277: } else {
9278: $result=$result>$new?$result:$new;
9279: }
9280: }
9281: }
9282: }
9283: return $result;
9284: }
9285:
9286: # ---------------------------------------------------- Devalidate courseresdata
9287:
9288: sub devalidatecourseresdata {
9289: my ($coursenum,$coursedomain)=@_;
9290: my $hashid=$coursenum.':'.$coursedomain;
9291: &devalidate_cache_new('courseres',$hashid);
9292: }
9293:
9294:
9295: # --------------------------------------------------- Course Resourcedata Query
9296: #
9297: # Parameters:
9298: # $coursenum - Number of the course.
9299: # $coursedomain - Domain at which the course was created.
9300: # Returns:
9301: # A hash of the course parameters along (I think) with timestamps
9302: # and version info.
9303:
9304: sub get_courseresdata {
9305: my ($coursenum,$coursedomain)=@_;
9306: my $coursehom=&homeserver($coursenum,$coursedomain);
9307: my $hashid=$coursenum.':'.$coursedomain;
9308: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9309: my %dumpreply;
9310: unless (defined($cached)) {
9311: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9312: $result=\%dumpreply;
9313: my ($tmp) = keys(%dumpreply);
9314: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9315: &do_cache_new('courseres',$hashid,$result,600);
9316: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9317: return $tmp;
9318: } elsif ($tmp =~ /^(error)/) {
9319: $result=undef;
9320: &do_cache_new('courseres',$hashid,$result,600);
9321: }
9322: }
9323: return $result;
9324: }
9325:
9326: sub devalidateuserresdata {
9327: my ($uname,$udom)=@_;
9328: my $hashid="$udom:$uname";
9329: &devalidate_cache_new('userres',$hashid);
9330: }
9331:
9332: sub get_userresdata {
9333: my ($uname,$udom)=@_;
9334: #most student don\'t have any data set, check if there is some data
9335: if (&EXT_cache_status($udom,$uname)) { return undef; }
9336:
9337: my $hashid="$udom:$uname";
9338: my ($result,$cached)=&is_cached_new('userres',$hashid);
9339: if (!defined($cached)) {
9340: my %resourcedata=&dump('resourcedata',$udom,$uname);
9341: $result=\%resourcedata;
9342: &do_cache_new('userres',$hashid,$result,600);
9343: }
9344: my ($tmp)=keys(%$result);
9345: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9346: return $result;
9347: }
9348: #error 2 occurs when the .db doesn't exist
9349: if ($tmp!~/error: 2 /) {
9350: &logthis("<font color=\"blue\">WARNING:".
9351: " Trying to get resource data for ".
9352: $uname." at ".$udom.": ".
9353: $tmp."</font>");
9354: } elsif ($tmp=~/error: 2 /) {
9355: #&EXT_cache_set($udom,$uname);
9356: &do_cache_new('userres',$hashid,undef,600);
9357: undef($tmp); # not really an error so don't send it back
9358: }
9359: return $tmp;
9360: }
9361: #----------------------------------------------- resdata - return resource data
9362: # Purpose:
9363: # Return resource data for either users or for a course.
9364: # Parameters:
9365: # $name - Course/user name.
9366: # $domain - Name of the domain the user/course is registered on.
9367: # $type - Type of thing $name is (must be 'course' or 'user'
9368: # @which - Array of names of resources desired.
9369: # Returns:
9370: # The value of the first reasource in @which that is found in the
9371: # resource hash.
9372: # Exceptional Conditions:
9373: # If the $type passed in is not valid (not the string 'course' or
9374: # 'user', an undefined reference is returned.
9375: # If none of the resources are found, an undef is returned
9376: sub resdata {
9377: my ($name,$domain,$type,@which)=@_;
9378: my $result;
9379: if ($type eq 'course') {
9380: $result=&get_courseresdata($name,$domain);
9381: } elsif ($type eq 'user') {
9382: $result=&get_userresdata($name,$domain);
9383: }
9384: if (!ref($result)) { return $result; }
9385: foreach my $item (@which) {
9386: if (defined($result->{$item->[0]})) {
9387: return [$result->{$item->[0]},$item->[1]];
9388: }
9389: }
9390: return undef;
9391: }
9392:
9393: #
9394: # EXT resource caching routines
9395: #
9396:
9397: sub clear_EXT_cache_status {
9398: &delenv('cache.EXT.');
9399: }
9400:
9401: sub EXT_cache_status {
9402: my ($target_domain,$target_user) = @_;
9403: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9404: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9405: # We know already the user has no data
9406: return 1;
9407: } else {
9408: return 0;
9409: }
9410: }
9411:
9412: sub EXT_cache_set {
9413: my ($target_domain,$target_user) = @_;
9414: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9415: #&appenv({$cachename => time});
9416: }
9417:
9418: # --------------------------------------------------------- Value of a Variable
9419: sub EXT {
9420:
9421: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9422: unless ($varname) { return ''; }
9423: #get real user name/domain, courseid and symb
9424: my $courseid;
9425: my $publicuser;
9426: if ($symbparm) {
9427: $symbparm=&get_symb_from_alias($symbparm);
9428: }
9429: if (!($uname && $udom)) {
9430: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9431: if (!$symbparm) { $symbparm=$cursymb; }
9432: } else {
9433: $courseid=$env{'request.course.id'};
9434: }
9435: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9436: my $rest;
9437: if (defined($therest[0])) {
9438: $rest=join('.',@therest);
9439: } else {
9440: $rest='';
9441: }
9442:
9443: my $qualifierrest=$qualifier;
9444: if ($rest) { $qualifierrest.='.'.$rest; }
9445: my $spacequalifierrest=$space;
9446: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9447: if ($realm eq 'user') {
9448: # --------------------------------------------------------------- user.resource
9449: if ($space eq 'resource') {
9450: if ( (defined($Apache::lonhomework::parsing_a_problem)
9451: || defined($Apache::lonhomework::parsing_a_task))
9452: &&
9453: ($symbparm eq &symbread()) ) {
9454: # if we are in the middle of processing the resource the
9455: # get the value we are planning on committing
9456: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9457: return $Apache::lonhomework::results{$qualifierrest};
9458: } else {
9459: return $Apache::lonhomework::history{$qualifierrest};
9460: }
9461: } else {
9462: my %restored;
9463: if ($publicuser || $env{'request.state'} eq 'construct') {
9464: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9465: } else {
9466: %restored=&restore($symbparm,$courseid,$udom,$uname);
9467: }
9468: return $restored{$qualifierrest};
9469: }
9470: # ----------------------------------------------------------------- user.access
9471: } elsif ($space eq 'access') {
9472: # FIXME - not supporting calls for a specific user
9473: return &allowed($qualifier,$rest);
9474: # ------------------------------------------ user.preferences, user.environment
9475: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9476: if (($uname eq $env{'user.name'}) &&
9477: ($udom eq $env{'user.domain'})) {
9478: return $env{join('.',('environment',$qualifierrest))};
9479: } else {
9480: my %returnhash;
9481: if (!$publicuser) {
9482: %returnhash=&userenvironment($udom,$uname,
9483: $qualifierrest);
9484: }
9485: return $returnhash{$qualifierrest};
9486: }
9487: # ----------------------------------------------------------------- user.course
9488: } elsif ($space eq 'course') {
9489: # FIXME - not supporting calls for a specific user
9490: return $env{join('.',('request.course',$qualifier))};
9491: # ------------------------------------------------------------------- user.role
9492: } elsif ($space eq 'role') {
9493: # FIXME - not supporting calls for a specific user
9494: my ($role,$where)=split(/\./,$env{'request.role'});
9495: if ($qualifier eq 'value') {
9496: return $role;
9497: } elsif ($qualifier eq 'extent') {
9498: return $where;
9499: }
9500: # ----------------------------------------------------------------- user.domain
9501: } elsif ($space eq 'domain') {
9502: return $udom;
9503: # ------------------------------------------------------------------- user.name
9504: } elsif ($space eq 'name') {
9505: return $uname;
9506: # ---------------------------------------------------- Any other user namespace
9507: } else {
9508: my %reply;
9509: if (!$publicuser) {
9510: %reply=&get($space,[$qualifierrest],$udom,$uname);
9511: }
9512: return $reply{$qualifierrest};
9513: }
9514: } elsif ($realm eq 'query') {
9515: # ---------------------------------------------- pull stuff out of query string
9516: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9517: [$spacequalifierrest]);
9518: return $env{'form.'.$spacequalifierrest};
9519: } elsif ($realm eq 'request') {
9520: # ------------------------------------------------------------- request.browser
9521: if ($space eq 'browser') {
9522: return $env{'browser.'.$qualifier};
9523: # ------------------------------------------------------------ request.filename
9524: } else {
9525: return $env{'request.'.$spacequalifierrest};
9526: }
9527: } elsif ($realm eq 'course') {
9528: # ---------------------------------------------------------- course.description
9529: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9530: } elsif ($realm eq 'resource') {
9531:
9532: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9533: if (!$symbparm) { $symbparm=&symbread(); }
9534: }
9535:
9536: if ($space eq 'title') {
9537: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9538: return &gettitle($symbparm);
9539: }
9540:
9541: if ($space eq 'map') {
9542: my ($map) = &decode_symb($symbparm);
9543: return &symbread($map);
9544: }
9545: if ($space eq 'filename') {
9546: if ($symbparm) {
9547: return &clutter((&decode_symb($symbparm))[2]);
9548: }
9549: return &hreflocation('',$env{'request.filename'});
9550: }
9551:
9552: my ($section, $group, @groups);
9553: my ($courselevelm,$courselevel);
9554: if ($symbparm && defined($courseid) &&
9555: $courseid eq $env{'request.course.id'}) {
9556:
9557: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9558:
9559: # ----------------------------------------------------- Cascading lookup scheme
9560: my $symbp=$symbparm;
9561: my $mapp=&deversion((&decode_symb($symbp))[0]);
9562:
9563: my $symbparm=$symbp.'.'.$spacequalifierrest;
9564: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9565:
9566: if (($env{'user.name'} eq $uname) &&
9567: ($env{'user.domain'} eq $udom)) {
9568: $section=$env{'request.course.sec'};
9569: @groups = split(/:/,$env{'request.course.groups'});
9570: @groups=&sort_course_groups($courseid,@groups);
9571: } else {
9572: if (! defined($usection)) {
9573: $section=&getsection($udom,$uname,$courseid);
9574: } else {
9575: $section = $usection;
9576: }
9577: @groups = &get_users_groups($udom,$uname,$courseid);
9578: }
9579:
9580: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9581: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9582: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9583:
9584: $courselevel=$courseid.'.'.$spacequalifierrest;
9585: my $courselevelr=$courseid.'.'.$symbparm;
9586: $courselevelm=$courseid.'.'.$mapparm;
9587:
9588: # ----------------------------------------------------------- first, check user
9589:
9590: my $userreply=&resdata($uname,$udom,'user',
9591: ([$courselevelr,'resource'],
9592: [$courselevelm,'map' ],
9593: [$courselevel, 'course' ]));
9594: if (defined($userreply)) { return &get_reply($userreply); }
9595:
9596: # ------------------------------------------------ second, check some of course
9597: my $coursereply;
9598: if (@groups > 0) {
9599: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9600: $mapparm,$spacequalifierrest);
9601: if (defined($coursereply)) { return &get_reply($coursereply); }
9602: }
9603:
9604: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9605: $env{'course.'.$courseid.'.domain'},
9606: 'course',
9607: ([$seclevelr, 'resource'],
9608: [$seclevelm, 'map' ],
9609: [$seclevel, 'course' ],
9610: [$courselevelr,'resource']));
9611: if (defined($coursereply)) { return &get_reply($coursereply); }
9612:
9613: # ------------------------------------------------------ third, check map parms
9614: my %parmhash=();
9615: my $thisparm='';
9616: if (tie(%parmhash,'GDBM_File',
9617: $env{'request.course.fn'}.'_parms.db',
9618: &GDBM_READER(),0640)) {
9619: $thisparm=$parmhash{$symbparm};
9620: untie(%parmhash);
9621: }
9622: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9623: }
9624: # ------------------------------------------ fourth, look in resource metadata
9625:
9626: $spacequalifierrest=~s/\./\_/;
9627: my $filename;
9628: if (!$symbparm) { $symbparm=&symbread(); }
9629: if ($symbparm) {
9630: $filename=(&decode_symb($symbparm))[2];
9631: } else {
9632: $filename=$env{'request.filename'};
9633: }
9634: my $metadata=&metadata($filename,$spacequalifierrest);
9635: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9636: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9637: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9638:
9639: # ---------------------------------------------- fourth, look in rest of course
9640: if ($symbparm && defined($courseid) &&
9641: $courseid eq $env{'request.course.id'}) {
9642: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9643: $env{'course.'.$courseid.'.domain'},
9644: 'course',
9645: ([$courselevelm,'map' ],
9646: [$courselevel, 'course']));
9647: if (defined($coursereply)) { return &get_reply($coursereply); }
9648: }
9649: # ------------------------------------------------------------------ Cascade up
9650: unless ($space eq '0') {
9651: my @parts=split(/_/,$space);
9652: my $id=pop(@parts);
9653: my $part=join('_',@parts);
9654: if ($part eq '') { $part='0'; }
9655: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9656: $symbparm,$udom,$uname,$section,1);
9657: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9658: }
9659: if ($recurse) { return undef; }
9660: my $pack_def=&packages_tab_default($filename,$varname);
9661: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9662: # ---------------------------------------------------- Any other user namespace
9663: } elsif ($realm eq 'environment') {
9664: # ----------------------------------------------------------------- environment
9665: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9666: return $env{'environment.'.$spacequalifierrest};
9667: } else {
9668: if ($uname eq 'anonymous' && $udom eq '') {
9669: return '';
9670: }
9671: my %returnhash=&userenvironment($udom,$uname,
9672: $spacequalifierrest);
9673: return $returnhash{$spacequalifierrest};
9674: }
9675: } elsif ($realm eq 'system') {
9676: # ----------------------------------------------------------------- system.time
9677: if ($space eq 'time') {
9678: return time;
9679: }
9680: } elsif ($realm eq 'server') {
9681: # ----------------------------------------------------------------- system.time
9682: if ($space eq 'name') {
9683: return $ENV{'SERVER_NAME'};
9684: }
9685: }
9686: return '';
9687: }
9688:
9689: sub get_reply {
9690: my ($reply_value) = @_;
9691: if (ref($reply_value) eq 'ARRAY') {
9692: if (wantarray) {
9693: return @$reply_value;
9694: }
9695: return $reply_value->[0];
9696: } else {
9697: return $reply_value;
9698: }
9699: }
9700:
9701: sub check_group_parms {
9702: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9703: my @groupitems = ();
9704: my $resultitem;
9705: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9706: foreach my $group (@{$groups}) {
9707: foreach my $level (@levels) {
9708: my $item = $courseid.'.['.$group.'].'.$level->[0];
9709: push(@groupitems,[$item,$level->[1]]);
9710: }
9711: }
9712: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9713: $env{'course.'.$courseid.'.domain'},
9714: 'course',@groupitems);
9715: return $coursereply;
9716: }
9717:
9718: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9719: my ($courseid,@groups) = @_;
9720: @groups = sort(@groups);
9721: return @groups;
9722: }
9723:
9724: sub packages_tab_default {
9725: my ($uri,$varname)=@_;
9726: my (undef,$part,$name)=split(/\./,$varname);
9727:
9728: my (@extension,@specifics,$do_default);
9729: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9730: my ($pack_type,$pack_part)=split(/_/,$package,2);
9731: if ($pack_type eq 'default') {
9732: $do_default=1;
9733: } elsif ($pack_type eq 'extension') {
9734: push(@extension,[$package,$pack_type,$pack_part]);
9735: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9736: # only look at packages defaults for packages that this id is
9737: push(@specifics,[$package,$pack_type,$pack_part]);
9738: }
9739: }
9740: # first look for a package that matches the requested part id
9741: foreach my $package (@specifics) {
9742: my (undef,$pack_type,$pack_part)=@{$package};
9743: next if ($pack_part ne $part);
9744: if (defined($packagetab{"$pack_type&$name&default"})) {
9745: return $packagetab{"$pack_type&$name&default"};
9746: }
9747: }
9748: # look for any possible matching non extension_ package
9749: foreach my $package (@specifics) {
9750: my (undef,$pack_type,$pack_part)=@{$package};
9751: if (defined($packagetab{"$pack_type&$name&default"})) {
9752: return $packagetab{"$pack_type&$name&default"};
9753: }
9754: if ($pack_type eq 'part') { $pack_part='0'; }
9755: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9756: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9757: }
9758: }
9759: # look for any posible extension_ match
9760: foreach my $package (@extension) {
9761: my ($package,$pack_type)=@{$package};
9762: if (defined($packagetab{"$pack_type&$name&default"})) {
9763: return $packagetab{"$pack_type&$name&default"};
9764: }
9765: if (defined($packagetab{$package."&$name&default"})) {
9766: return $packagetab{$package."&$name&default"};
9767: }
9768: }
9769: # look for a global default setting
9770: if ($do_default && defined($packagetab{"default&$name&default"})) {
9771: return $packagetab{"default&$name&default"};
9772: }
9773: return undef;
9774: }
9775:
9776: sub add_prefix_and_part {
9777: my ($prefix,$part)=@_;
9778: my $keyroot;
9779: if (defined($prefix) && $prefix !~ /^__/) {
9780: # prefix that has a part already
9781: $keyroot=$prefix;
9782: } elsif (defined($prefix)) {
9783: # prefix that is missing a part
9784: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9785: } else {
9786: # no prefix at all
9787: if (defined($part)) { $keyroot='_'.$part; }
9788: }
9789: return $keyroot;
9790: }
9791:
9792: # ---------------------------------------------------------------- Get metadata
9793:
9794: my %metaentry;
9795: my %importedpartids;
9796: sub metadata {
9797: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9798: $uri=&declutter($uri);
9799: # if it is a non metadata possible uri return quickly
9800: if (($uri eq '') ||
9801: (($uri =~ m|^/*adm/|) &&
9802: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9803: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9804: return undef;
9805: }
9806: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9807: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9808: return undef;
9809: }
9810: my $filename=$uri;
9811: $uri=~s/\.meta$//;
9812: #
9813: # Is the metadata already cached?
9814: # Look at timestamp of caching
9815: # Everything is cached by the main uri, libraries are never directly cached
9816: #
9817: if (!defined($liburi)) {
9818: my ($result,$cached)=&is_cached_new('meta',$uri);
9819: if (defined($cached)) { return $result->{':'.$what}; }
9820: }
9821: {
9822: # Imported parts would go here
9823: my %importedids=();
9824: my @origfileimportpartids=();
9825: my $importedparts=0;
9826: #
9827: # Is this a recursive call for a library?
9828: #
9829: # if (! exists($metacache{$uri})) {
9830: # $metacache{$uri}={};
9831: # }
9832: my $cachetime = 60*60;
9833: if ($liburi) {
9834: $liburi=&declutter($liburi);
9835: $filename=$liburi;
9836: } else {
9837: &devalidate_cache_new('meta',$uri);
9838: undef(%metaentry);
9839: }
9840: my %metathesekeys=();
9841: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9842: my $metastring;
9843: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9844: my $which = &hreflocation('','/'.($liburi || $uri));
9845: $metastring =
9846: &Apache::lonnet::ssi_body($which,
9847: ('grade_target' => 'meta'));
9848: $cachetime = 1; # only want this cached in the child not long term
9849: } elsif (($uri !~ m -^(editupload)/-) &&
9850: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9851: my $file=&filelocation('',&clutter($filename));
9852: #push(@{$metaentry{$uri.'.file'}},$file);
9853: $metastring=&getfile($file);
9854: }
9855: my $parser=HTML::LCParser->new(\$metastring);
9856: my $token;
9857: undef %metathesekeys;
9858: while ($token=$parser->get_token) {
9859: if ($token->[0] eq 'S') {
9860: if (defined($token->[2]->{'package'})) {
9861: #
9862: # This is a package - get package info
9863: #
9864: my $package=$token->[2]->{'package'};
9865: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9866: if (defined($token->[2]->{'id'})) {
9867: $keyroot.='_'.$token->[2]->{'id'};
9868: }
9869: if ($metaentry{':packages'}) {
9870: $metaentry{':packages'}.=','.$package.$keyroot;
9871: } else {
9872: $metaentry{':packages'}=$package.$keyroot;
9873: }
9874: foreach my $pack_entry (keys(%packagetab)) {
9875: my $part=$keyroot;
9876: $part=~s/^\_//;
9877: if ($pack_entry=~/^\Q$package\E\&/ ||
9878: $pack_entry=~/^\Q$package\E_0\&/) {
9879: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9880: # ignore package.tab specified default values
9881: # here &package_tab_default() will fetch those
9882: if ($subp eq 'default') { next; }
9883: my $value=$packagetab{$pack_entry};
9884: my $unikey;
9885: if ($pack =~ /_0$/) {
9886: $unikey='parameter_0_'.$name;
9887: $part=0;
9888: } else {
9889: $unikey='parameter'.$keyroot.'_'.$name;
9890: }
9891: if ($subp eq 'display') {
9892: $value.=' [Part: '.$part.']';
9893: }
9894: $metaentry{':'.$unikey.'.part'}=$part;
9895: $metathesekeys{$unikey}=1;
9896: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9897: $metaentry{':'.$unikey.'.'.$subp}=$value;
9898: }
9899: if (defined($metaentry{':'.$unikey.'.default'})) {
9900: $metaentry{':'.$unikey}=
9901: $metaentry{':'.$unikey.'.default'};
9902: }
9903: }
9904: }
9905: } else {
9906: #
9907: # This is not a package - some other kind of start tag
9908: #
9909: my $entry=$token->[1];
9910: my $unikey='';
9911:
9912: if ($entry eq 'import') {
9913: #
9914: # Importing a library here
9915: #
9916: my $location=$parser->get_text('/import');
9917: my $dir=$filename;
9918: $dir=~s|[^/]*$||;
9919: $location=&filelocation($dir,$location);
9920:
9921: my $importmode=$token->[2]->{'importmode'};
9922: if ($importmode eq 'problem') {
9923: # Import as problem/response
9924: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9925: } elsif ($importmode eq 'part') {
9926: # Import as part(s)
9927: $importedparts=1;
9928: # We need to get the original file and the imported file to get the part order correct
9929: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9930: # Load and inspect original file
9931: if ($#origfileimportpartids<0) {
9932: undef(%importedpartids);
9933: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9934: my $origfile=&getfile($origfilelocation);
9935: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9936: }
9937:
9938: # Load and inspect imported file
9939: my $impfile=&getfile($location);
9940: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9941: if ($#impfilepartids>=0) {
9942: # This problem had parts
9943: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9944: } else {
9945: # Importing by turning a single problem into a problem part
9946: # It gets the import-tags ID as part-ID
9947: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9948: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9949: }
9950: } else {
9951: # Normal import
9952: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9953: if (defined($token->[2]->{'id'})) {
9954: $unikey.='_'.$token->[2]->{'id'};
9955: }
9956: }
9957:
9958: if ($depthcount<20) {
9959: my $metadata =
9960: &metadata($uri,'keys', $location,$unikey,
9961: $depthcount+1);
9962: foreach my $meta (split(',',$metadata)) {
9963: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9964: $metathesekeys{$meta}=1;
9965: }
9966:
9967: }
9968: } else {
9969: #
9970: # Not importing, some other kind of non-package, non-library start tag
9971: #
9972: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9973: if (defined($token->[2]->{'id'})) {
9974: $unikey.='_'.$token->[2]->{'id'};
9975: }
9976: if (defined($token->[2]->{'name'})) {
9977: $unikey.='_'.$token->[2]->{'name'};
9978: }
9979: $metathesekeys{$unikey}=1;
9980: foreach my $param (@{$token->[3]}) {
9981: $metaentry{':'.$unikey.'.'.$param} =
9982: $token->[2]->{$param};
9983: }
9984: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9985: my $default=$metaentry{':'.$unikey.'.default'};
9986: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9987: # only ws inside the tag, and not in default, so use default
9988: # as value
9989: $metaentry{':'.$unikey}=$default;
9990: } elsif ( $internaltext =~ /\S/ ) {
9991: # something interesting inside the tag
9992: $metaentry{':'.$unikey}=$internaltext;
9993: } else {
9994: # no interesting values, don't set a default
9995: }
9996: # end of not-a-package not-a-library import
9997: }
9998: # end of not-a-package start tag
9999: }
10000: # the next is the end of "start tag"
10001: }
10002: }
10003: my ($extension) = ($uri =~ /\.(\w+)$/);
10004: $extension = lc($extension);
10005: if ($extension eq 'htm') { $extension='html'; }
10006:
10007: foreach my $key (keys(%packagetab)) {
10008: #no specific packages #how's our extension
10009: if ($key!~/^extension_\Q$extension\E&/) { next; }
10010: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10011: \%metathesekeys);
10012: }
10013:
10014: if (!exists($metaentry{':packages'})
10015: || $packagetab{"import_defaults&extension_$extension"}) {
10016: foreach my $key (keys(%packagetab)) {
10017: #no specific packages well let's get default then
10018: if ($key!~/^default&/) { next; }
10019: &metadata_create_package_def($uri,$key,'default',
10020: \%metathesekeys);
10021: }
10022: }
10023: # are there custom rights to evaluate
10024: if ($metaentry{':copyright'} eq 'custom') {
10025:
10026: #
10027: # Importing a rights file here
10028: #
10029: unless ($depthcount) {
10030: my $location=$metaentry{':customdistributionfile'};
10031: my $dir=$filename;
10032: $dir=~s|[^/]*$||;
10033: $location=&filelocation($dir,$location);
10034: my $rights_metadata =
10035: &metadata($uri,'keys',$location,'_rights',
10036: $depthcount+1);
10037: foreach my $rights (split(',',$rights_metadata)) {
10038: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10039: $metathesekeys{$rights}=1;
10040: }
10041: }
10042: }
10043: # uniqifiy package listing
10044: my %seen;
10045: my @uniq_packages =
10046: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10047: $metaentry{':packages'} = join(',',@uniq_packages);
10048:
10049: if ($importedparts) {
10050: # We had imported parts and need to rebuild partorder
10051: $metaentry{':partorder'}='';
10052: $metathesekeys{'partorder'}=1;
10053: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10054: if ($origfileimportpartids[$index] eq 'part') {
10055: # original part, part of the problem
10056: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10057: } else {
10058: # we have imported parts at this position
10059: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10060: }
10061: }
10062: $metaentry{':partorder'}=~s/^\,//;
10063: }
10064:
10065: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10066: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10067: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10068: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10069: # this is the end of "was not already recently cached
10070: }
10071: return $metaentry{':'.$what};
10072: }
10073:
10074: sub metadata_create_package_def {
10075: my ($uri,$key,$package,$metathesekeys)=@_;
10076: my ($pack,$name,$subp)=split(/\&/,$key);
10077: if ($subp eq 'default') { next; }
10078:
10079: if (defined($metaentry{':packages'})) {
10080: $metaentry{':packages'}.=','.$package;
10081: } else {
10082: $metaentry{':packages'}=$package;
10083: }
10084: my $value=$packagetab{$key};
10085: my $unikey;
10086: $unikey='parameter_0_'.$name;
10087: $metaentry{':'.$unikey.'.part'}=0;
10088: $$metathesekeys{$unikey}=1;
10089: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10090: $metaentry{':'.$unikey.'.'.$subp}=$value;
10091: }
10092: if (defined($metaentry{':'.$unikey.'.default'})) {
10093: $metaentry{':'.$unikey}=
10094: $metaentry{':'.$unikey.'.default'};
10095: }
10096: }
10097:
10098: sub metadata_generate_part0 {
10099: my ($metadata,$metacache,$uri) = @_;
10100: my %allnames;
10101: foreach my $metakey (keys(%$metadata)) {
10102: if ($metakey=~/^parameter\_(.*)/) {
10103: my $part=$$metacache{':'.$metakey.'.part'};
10104: my $name=$$metacache{':'.$metakey.'.name'};
10105: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10106: $allnames{$name}=$part;
10107: }
10108: }
10109: }
10110: foreach my $name (keys(%allnames)) {
10111: $$metadata{"parameter_0_$name"}=1;
10112: my $key=":parameter_0_$name";
10113: $$metacache{"$key.part"}='0';
10114: $$metacache{"$key.name"}=$name;
10115: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10116: $allnames{$name}.'_'.$name.
10117: '.type'};
10118: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10119: '.display'};
10120: my $expr='[Part: '.$allnames{$name}.']';
10121: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10122: $$metacache{"$key.display"}=$olddis;
10123: }
10124: }
10125:
10126: # ------------------------------------------------------ Devalidate title cache
10127:
10128: sub devalidate_title_cache {
10129: my ($url)=@_;
10130: if (!$env{'request.course.id'}) { return; }
10131: my $symb=&symbread($url);
10132: if (!$symb) { return; }
10133: my $key=$env{'request.course.id'}."\0".$symb;
10134: &devalidate_cache_new('title',$key);
10135: }
10136:
10137: # ------------------------------------------------- Get the title of a course
10138:
10139: sub current_course_title {
10140: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10141: }
10142: # ------------------------------------------------- Get the title of a resource
10143:
10144: sub gettitle {
10145: my $urlsymb=shift;
10146: my $symb=&symbread($urlsymb);
10147: if ($symb) {
10148: my $key=$env{'request.course.id'}."\0".$symb;
10149: my ($result,$cached)=&is_cached_new('title',$key);
10150: if (defined($cached)) {
10151: return $result;
10152: }
10153: my ($map,$resid,$url)=&decode_symb($symb);
10154: my $title='';
10155: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10156: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10157: } else {
10158: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10159: &GDBM_READER(),0640)) {
10160: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10161: $title=$bighash{'title_'.$mapid.'.'.$resid};
10162: untie(%bighash);
10163: }
10164: }
10165: $title=~s/\&colon\;/\:/gs;
10166: if ($title) {
10167: # Remember both $symb and $title for dynamic metadata
10168: $accesshash{$symb.'___crstitle'}=$title;
10169: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10170: # Cache this title and then return it
10171: return &do_cache_new('title',$key,$title,600);
10172: }
10173: $urlsymb=$url;
10174: }
10175: my $title=&metadata($urlsymb,'title');
10176: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10177: return $title;
10178: }
10179:
10180: sub get_slot {
10181: my ($which,$cnum,$cdom)=@_;
10182: if (!$cnum || !$cdom) {
10183: (undef,my $courseid)=&whichuser();
10184: $cdom=$env{'course.'.$courseid.'.domain'};
10185: $cnum=$env{'course.'.$courseid.'.num'};
10186: }
10187: my $key=join("\0",'slots',$cdom,$cnum,$which);
10188: my %slotinfo;
10189: if (exists($remembered{$key})) {
10190: $slotinfo{$which} = $remembered{$key};
10191: } else {
10192: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10193: &Apache::lonhomework::showhash(%slotinfo);
10194: my ($tmp)=keys(%slotinfo);
10195: if ($tmp=~/^error:/) { return (); }
10196: $remembered{$key} = $slotinfo{$which};
10197: }
10198: if (ref($slotinfo{$which}) eq 'HASH') {
10199: return %{$slotinfo{$which}};
10200: }
10201: return $slotinfo{$which};
10202: }
10203:
10204: sub get_reservable_slots {
10205: my ($cnum,$cdom,$uname,$udom) = @_;
10206: my $now = time;
10207: my $reservable_info;
10208: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10209: if (exists($remembered{$key})) {
10210: $reservable_info = $remembered{$key};
10211: } else {
10212: my %resv;
10213: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10214: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10215: $reservable_info = \%resv;
10216: $remembered{$key} = $reservable_info;
10217: }
10218: return $reservable_info;
10219: }
10220:
10221: sub get_course_slots {
10222: my ($cnum,$cdom) = @_;
10223: my $hashid=$cnum.':'.$cdom;
10224: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10225: if (defined($cached)) {
10226: if (ref($result) eq 'HASH') {
10227: return %{$result};
10228: }
10229: } else {
10230: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10231: my ($tmp) = keys(%slots);
10232: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10233: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
10234: return %slots;
10235: }
10236: }
10237: return;
10238: }
10239:
10240: sub devalidate_slots_cache {
10241: my ($cnum,$cdom)=@_;
10242: my $hashid=$cnum.':'.$cdom;
10243: &devalidate_cache_new('allslots',$hashid);
10244: }
10245:
10246: sub get_coursechange {
10247: my ($cdom,$cnum) = @_;
10248: if ($cdom eq '' || $cnum eq '') {
10249: return unless ($env{'request.course.id'});
10250: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10251: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10252: }
10253: my $hashid=$cdom.'_'.$cnum;
10254: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10255: if ((defined($cached)) && ($change ne '')) {
10256: return $change;
10257: } else {
10258: my %crshash;
10259: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10260: if ($crshash{'internal.contentchange'} eq '') {
10261: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10262: if ($change eq '') {
10263: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10264: $change = $crshash{'internal.created'};
10265: }
10266: } else {
10267: $change = $crshash{'internal.contentchange'};
10268: }
10269: my $cachetime = 600;
10270: &do_cache_new('crschange',$hashid,$change,$cachetime);
10271: }
10272: return $change;
10273: }
10274:
10275: sub devalidate_coursechange_cache {
10276: my ($cnum,$cdom)=@_;
10277: my $hashid=$cnum.':'.$cdom;
10278: &devalidate_cache_new('crschange',$hashid);
10279: }
10280:
10281: # ------------------------------------------------- Update symbolic store links
10282:
10283: sub symblist {
10284: my ($mapname,%newhash)=@_;
10285: $mapname=&deversion(&declutter($mapname));
10286: my %hash;
10287: if (($env{'request.course.fn'}) && (%newhash)) {
10288: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10289: &GDBM_WRCREAT(),0640)) {
10290: foreach my $url (keys(%newhash)) {
10291: next if ($url eq 'last_known'
10292: && $env{'form.no_update_last_known'});
10293: $hash{declutter($url)}=&encode_symb($mapname,
10294: $newhash{$url}->[1],
10295: $newhash{$url}->[0]);
10296: }
10297: if (untie(%hash)) {
10298: return 'ok';
10299: }
10300: }
10301: }
10302: return 'error';
10303: }
10304:
10305: # --------------------------------------------------------------- Verify a symb
10306:
10307: sub symbverify {
10308: my ($symb,$thisurl,$encstate)=@_;
10309: my $thisfn=$thisurl;
10310: $thisfn=&declutter($thisfn);
10311: # direct jump to resource in page or to a sequence - will construct own symbs
10312: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10313: # check URL part
10314: my ($map,$resid,$url)=&decode_symb($symb);
10315:
10316: unless ($url eq $thisfn) { return 0; }
10317:
10318: $symb=&symbclean($symb);
10319: $thisurl=&deversion($thisurl);
10320: $thisfn=&deversion($thisfn);
10321:
10322: my %bighash;
10323: my $okay=0;
10324:
10325: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10326: &GDBM_READER(),0640)) {
10327: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10328: $thisurl =~ s/\?.+$//;
10329: }
10330: my $ids=$bighash{'ids_'.&clutter($thisurl)};
10331: unless ($ids) {
10332: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10333: $ids=$bighash{$idkey};
10334: }
10335: if ($ids) {
10336: # ------------------------------------------------------------------- Has ID(s)
10337: foreach my $id (split(/\,/,$ids)) {
10338: my ($mapid,$resid)=split(/\./,$id);
10339: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10340: $symb =~ s/\?.+$//;
10341: }
10342: if (
10343: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10344: eq $symb) {
10345: if (ref($encstate)) {
10346: $$encstate = $bighash{'encrypted_'.$id};
10347: }
10348: if (($env{'request.role.adv'}) ||
10349: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10350: ($thisurl eq '/adm/navmaps')) {
10351: $okay=1;
10352: }
10353: }
10354: }
10355: }
10356: untie(%bighash);
10357: }
10358: return $okay;
10359: }
10360:
10361: # --------------------------------------------------------------- Clean-up symb
10362:
10363: sub symbclean {
10364: my $symb=shift;
10365: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10366: # remove version from map
10367: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10368:
10369: # remove version from URL
10370: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10371:
10372: # remove wrapper
10373:
10374: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10375: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10376: return $symb;
10377: }
10378:
10379: # ---------------------------------------------- Split symb to find map and url
10380:
10381: sub encode_symb {
10382: my ($map,$resid,$url)=@_;
10383: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10384: }
10385:
10386: sub decode_symb {
10387: my $symb=shift;
10388: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10389: my ($map,$resid,$url)=split(/___/,$symb);
10390: return (&fixversion($map),$resid,&fixversion($url));
10391: }
10392:
10393: sub fixversion {
10394: my $fn=shift;
10395: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10396: my %bighash;
10397: my $uri=&clutter($fn);
10398: my $key=$env{'request.course.id'}.'_'.$uri;
10399: # is this cached?
10400: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10401: if (defined($cached)) { return $result; }
10402: # unfortunately not cached, or expired
10403: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10404: &GDBM_READER(),0640)) {
10405: if ($bighash{'version_'.$uri}) {
10406: my $version=$bighash{'version_'.$uri};
10407: unless (($version eq 'mostrecent') ||
10408: ($version==&getversion($uri))) {
10409: $uri=~s/\.(\w+)$/\.$version\.$1/;
10410: }
10411: }
10412: untie %bighash;
10413: }
10414: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10415: }
10416:
10417: sub deversion {
10418: my $url=shift;
10419: $url=~s/\.\d+\.(\w+)$/\.$1/;
10420: return $url;
10421: }
10422:
10423: # ------------------------------------------------------ Return symb list entry
10424:
10425: sub symbread {
10426: my ($thisfn,$donotrecurse)=@_;
10427: my $cache_str='request.symbread.cached.'.$thisfn;
10428: if (defined($env{$cache_str})) {
10429: if (($thisfn) || ($env{$cache_str} ne '')) {
10430: return $env{$cache_str};
10431: }
10432: }
10433: # no filename provided? try from environment
10434: unless ($thisfn) {
10435: if ($env{'request.symb'}) {
10436: return $env{$cache_str}=&symbclean($env{'request.symb'});
10437: }
10438: $thisfn=$env{'request.filename'};
10439: }
10440: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10441: # is that filename actually a symb? Verify, clean, and return
10442: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10443: if (&symbverify($thisfn,$1)) {
10444: return $env{$cache_str}=&symbclean($thisfn);
10445: }
10446: }
10447: $thisfn=declutter($thisfn);
10448: my %hash;
10449: my %bighash;
10450: my $syval='';
10451: if (($env{'request.course.fn'}) && ($thisfn)) {
10452: my $targetfn = $thisfn;
10453: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10454: $targetfn = 'adm/wrapper/'.$thisfn;
10455: }
10456: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10457: $targetfn=$1;
10458: }
10459: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10460: &GDBM_READER(),0640)) {
10461: $syval=$hash{$targetfn};
10462: untie(%hash);
10463: }
10464: # ---------------------------------------------------------- There was an entry
10465: if ($syval) {
10466: #unless ($syval=~/\_\d+$/) {
10467: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10468: #&appenv({'request.ambiguous' => $thisfn});
10469: #return $env{$cache_str}='';
10470: #}
10471: #$syval.=$1;
10472: #}
10473: } else {
10474: # ------------------------------------------------------- Was not in symb table
10475: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10476: &GDBM_READER(),0640)) {
10477: # ---------------------------------------------- Get ID(s) for current resource
10478: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10479: unless ($ids) {
10480: $ids=$bighash{'ids_/'.$thisfn};
10481: }
10482: unless ($ids) {
10483: # alias?
10484: $ids=$bighash{'mapalias_'.$thisfn};
10485: }
10486: if ($ids) {
10487: # ------------------------------------------------------------------- Has ID(s)
10488: my @possibilities=split(/\,/,$ids);
10489: if ($#possibilities==0) {
10490: # ----------------------------------------------- There is only one possibility
10491: my ($mapid,$resid)=split(/\./,$ids);
10492: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10493: $resid,$thisfn);
10494: } elsif (!$donotrecurse) {
10495: # ------------------------------------------ There is more than one possibility
10496: my $realpossible=0;
10497: foreach my $id (@possibilities) {
10498: my $file=$bighash{'src_'.$id};
10499: if (&allowed('bre',$file)) {
10500: my ($mapid,$resid)=split(/\./,$id);
10501: if ($bighash{'map_type_'.$mapid} ne 'page') {
10502: $realpossible++;
10503: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10504: $resid,$thisfn);
10505: }
10506: }
10507: }
10508: if ($realpossible!=1) { $syval=''; }
10509: } else {
10510: $syval='';
10511: }
10512: }
10513: untie(%bighash)
10514: }
10515: }
10516: if ($syval) {
10517: return $env{$cache_str}=$syval;
10518: }
10519: }
10520: &appenv({'request.ambiguous' => $thisfn});
10521: return $env{$cache_str}='';
10522: }
10523:
10524: # ---------------------------------------------------------- Return random seed
10525:
10526: sub numval {
10527: my $txt=shift;
10528: $txt=~tr/A-J/0-9/;
10529: $txt=~tr/a-j/0-9/;
10530: $txt=~tr/K-T/0-9/;
10531: $txt=~tr/k-t/0-9/;
10532: $txt=~tr/U-Z/0-5/;
10533: $txt=~tr/u-z/0-5/;
10534: $txt=~s/\D//g;
10535: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10536: return int($txt);
10537: }
10538:
10539: sub numval2 {
10540: my $txt=shift;
10541: $txt=~tr/A-J/0-9/;
10542: $txt=~tr/a-j/0-9/;
10543: $txt=~tr/K-T/0-9/;
10544: $txt=~tr/k-t/0-9/;
10545: $txt=~tr/U-Z/0-5/;
10546: $txt=~tr/u-z/0-5/;
10547: $txt=~s/\D//g;
10548: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10549: my $total;
10550: foreach my $val (@txts) { $total+=$val; }
10551: if ($_64bit) { if ($total > 2**32) { return -1; } }
10552: return int($total);
10553: }
10554:
10555: sub numval3 {
10556: use integer;
10557: my $txt=shift;
10558: $txt=~tr/A-J/0-9/;
10559: $txt=~tr/a-j/0-9/;
10560: $txt=~tr/K-T/0-9/;
10561: $txt=~tr/k-t/0-9/;
10562: $txt=~tr/U-Z/0-5/;
10563: $txt=~tr/u-z/0-5/;
10564: $txt=~s/\D//g;
10565: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10566: my $total;
10567: foreach my $val (@txts) { $total+=$val; }
10568: if ($_64bit) { $total=(($total<<32)>>32); }
10569: return $total;
10570: }
10571:
10572: sub digest {
10573: my ($data)=@_;
10574: my $digest=&Digest::MD5::md5($data);
10575: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10576: my ($e,$f);
10577: {
10578: use integer;
10579: $e=($a+$b);
10580: $f=($c+$d);
10581: if ($_64bit) {
10582: $e=(($e<<32)>>32);
10583: $f=(($f<<32)>>32);
10584: }
10585: }
10586: if (wantarray) {
10587: return ($e,$f);
10588: } else {
10589: my $g;
10590: {
10591: use integer;
10592: $g=($e+$f);
10593: if ($_64bit) {
10594: $g=(($g<<32)>>32);
10595: }
10596: }
10597: return $g;
10598: }
10599: }
10600:
10601: sub latest_rnd_algorithm_id {
10602: return '64bit5';
10603: }
10604:
10605: sub get_rand_alg {
10606: my ($courseid)=@_;
10607: if (!$courseid) { $courseid=(&whichuser())[1]; }
10608: if ($courseid) {
10609: return $env{"course.$courseid.rndseed"};
10610: }
10611: return &latest_rnd_algorithm_id();
10612: }
10613:
10614: sub validCODE {
10615: my ($CODE)=@_;
10616: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10617: return 0;
10618: }
10619:
10620: sub getCODE {
10621: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10622: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10623: defined($Apache::lonhomework::parsing_a_task) ) &&
10624: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10625: return $Apache::lonhomework::history{'resource.CODE'};
10626: }
10627: return undef;
10628: }
10629: #
10630: # Determines the random seed for a specific context:
10631: #
10632: # parameters:
10633: # symb - in course context the symb for the seed.
10634: # course_id - The course id of the form domain_coursenum.
10635: # domain - Domain for the user.
10636: # course - Course for the user.
10637: # cenv - environment of the course.
10638: #
10639: # NOTE:
10640: # All parameters are picked out of the environment if missing
10641: # or not defined.
10642: # If a symb cannot be determined the current time is used instead.
10643: #
10644: # For a given well defined symb, courside, domain, username,
10645: # and course environment, the seed is reproducible.
10646: #
10647: sub rndseed {
10648: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10649: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10650: if (!defined($symb)) {
10651: unless ($symb=$wsymb) { return time; }
10652: }
10653: if (!defined $courseid) {
10654: $courseid=$wcourseid;
10655: }
10656: if (!defined $domain) { $domain=$wdomain; }
10657: if (!defined $username) { $username=$wusername }
10658:
10659: my $which;
10660: if (defined($cenv->{'rndseed'})) {
10661: $which = $cenv->{'rndseed'};
10662: } else {
10663: $which =&get_rand_alg($courseid);
10664: }
10665: if (defined(&getCODE())) {
10666:
10667: if ($which eq '64bit5') {
10668: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10669: } elsif ($which eq '64bit4') {
10670: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10671: } else {
10672: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10673: }
10674: } elsif ($which eq '64bit5') {
10675: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10676: } elsif ($which eq '64bit4') {
10677: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10678: } elsif ($which eq '64bit3') {
10679: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10680: } elsif ($which eq '64bit2') {
10681: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10682: } elsif ($which eq '64bit') {
10683: return &rndseed_64bit($symb,$courseid,$domain,$username);
10684: }
10685: return &rndseed_32bit($symb,$courseid,$domain,$username);
10686: }
10687:
10688: sub rndseed_32bit {
10689: my ($symb,$courseid,$domain,$username)=@_;
10690: {
10691: use integer;
10692: my $symbchck=unpack("%32C*",$symb) << 27;
10693: my $symbseed=numval($symb) << 22;
10694: my $namechck=unpack("%32C*",$username) << 17;
10695: my $nameseed=numval($username) << 12;
10696: my $domainseed=unpack("%32C*",$domain) << 7;
10697: my $courseseed=unpack("%32C*",$courseid);
10698: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10699: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10700: #&logthis("rndseed :$num:$symb");
10701: if ($_64bit) { $num=(($num<<32)>>32); }
10702: return $num;
10703: }
10704: }
10705:
10706: sub rndseed_64bit {
10707: my ($symb,$courseid,$domain,$username)=@_;
10708: {
10709: use integer;
10710: my $symbchck=unpack("%32S*",$symb) << 21;
10711: my $symbseed=numval($symb) << 10;
10712: my $namechck=unpack("%32S*",$username);
10713:
10714: my $nameseed=numval($username) << 21;
10715: my $domainseed=unpack("%32S*",$domain) << 10;
10716: my $courseseed=unpack("%32S*",$courseid);
10717:
10718: my $num1=$symbchck+$symbseed+$namechck;
10719: my $num2=$nameseed+$domainseed+$courseseed;
10720: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10721: #&logthis("rndseed :$num:$symb");
10722: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10723: return "$num1,$num2";
10724: }
10725: }
10726:
10727: sub rndseed_64bit2 {
10728: my ($symb,$courseid,$domain,$username)=@_;
10729: {
10730: use integer;
10731: # strings need to be an even # of cahracters long, it it is odd the
10732: # last characters gets thrown away
10733: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10734: my $symbseed=numval($symb) << 10;
10735: my $namechck=unpack("%32S*",$username.' ');
10736:
10737: my $nameseed=numval($username) << 21;
10738: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10739: my $courseseed=unpack("%32S*",$courseid.' ');
10740:
10741: my $num1=$symbchck+$symbseed+$namechck;
10742: my $num2=$nameseed+$domainseed+$courseseed;
10743: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10744: #&logthis("rndseed :$num:$symb");
10745: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10746: return "$num1,$num2";
10747: }
10748: }
10749:
10750: sub rndseed_64bit3 {
10751: my ($symb,$courseid,$domain,$username)=@_;
10752: {
10753: use integer;
10754: # strings need to be an even # of cahracters long, it it is odd the
10755: # last characters gets thrown away
10756: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10757: my $symbseed=numval2($symb) << 10;
10758: my $namechck=unpack("%32S*",$username.' ');
10759:
10760: my $nameseed=numval2($username) << 21;
10761: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10762: my $courseseed=unpack("%32S*",$courseid.' ');
10763:
10764: my $num1=$symbchck+$symbseed+$namechck;
10765: my $num2=$nameseed+$domainseed+$courseseed;
10766: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10767: #&logthis("rndseed :$num1:$num2:$_64bit");
10768: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10769:
10770: return "$num1:$num2";
10771: }
10772: }
10773:
10774: sub rndseed_64bit4 {
10775: my ($symb,$courseid,$domain,$username)=@_;
10776: {
10777: use integer;
10778: # strings need to be an even # of cahracters long, it it is odd the
10779: # last characters gets thrown away
10780: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10781: my $symbseed=numval3($symb) << 10;
10782: my $namechck=unpack("%32S*",$username.' ');
10783:
10784: my $nameseed=numval3($username) << 21;
10785: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10786: my $courseseed=unpack("%32S*",$courseid.' ');
10787:
10788: my $num1=$symbchck+$symbseed+$namechck;
10789: my $num2=$nameseed+$domainseed+$courseseed;
10790: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10791: #&logthis("rndseed :$num1:$num2:$_64bit");
10792: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10793:
10794: return "$num1:$num2";
10795: }
10796: }
10797:
10798: sub rndseed_64bit5 {
10799: my ($symb,$courseid,$domain,$username)=@_;
10800: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10801: return "$num1:$num2";
10802: }
10803:
10804: sub rndseed_CODE_64bit {
10805: my ($symb,$courseid,$domain,$username)=@_;
10806: {
10807: use integer;
10808: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10809: my $symbseed=numval2($symb);
10810: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10811: my $CODEseed=numval(&getCODE());
10812: my $courseseed=unpack("%32S*",$courseid.' ');
10813: my $num1=$symbseed+$CODEchck;
10814: my $num2=$CODEseed+$courseseed+$symbchck;
10815: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10816: #&logthis("rndseed :$num1:$num2:$symb");
10817: if ($_64bit) { $num1=(($num1<<32)>>32); }
10818: if ($_64bit) { $num2=(($num2<<32)>>32); }
10819: return "$num1:$num2";
10820: }
10821: }
10822:
10823: sub rndseed_CODE_64bit4 {
10824: my ($symb,$courseid,$domain,$username)=@_;
10825: {
10826: use integer;
10827: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10828: my $symbseed=numval3($symb);
10829: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10830: my $CODEseed=numval3(&getCODE());
10831: my $courseseed=unpack("%32S*",$courseid.' ');
10832: my $num1=$symbseed+$CODEchck;
10833: my $num2=$CODEseed+$courseseed+$symbchck;
10834: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10835: #&logthis("rndseed :$num1:$num2:$symb");
10836: if ($_64bit) { $num1=(($num1<<32)>>32); }
10837: if ($_64bit) { $num2=(($num2<<32)>>32); }
10838: return "$num1:$num2";
10839: }
10840: }
10841:
10842: sub rndseed_CODE_64bit5 {
10843: my ($symb,$courseid,$domain,$username)=@_;
10844: my $code = &getCODE();
10845: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10846: return "$num1:$num2";
10847: }
10848:
10849: sub setup_random_from_rndseed {
10850: my ($rndseed)=@_;
10851: if ($rndseed =~/([,:])/) {
10852: my ($num1,$num2)=split(/[,:]/,$rndseed);
10853: &Math::Random::random_set_seed(abs($num1),abs($num2));
10854: } else {
10855: &Math::Random::random_set_seed_from_phrase($rndseed);
10856: }
10857: }
10858:
10859: sub latest_receipt_algorithm_id {
10860: return 'receipt3';
10861: }
10862:
10863: sub recunique {
10864: my $fucourseid=shift;
10865: my $unique;
10866: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10867: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10868: $unique=$env{"course.$fucourseid.internal.encseed"};
10869: } else {
10870: $unique=$perlvar{'lonReceipt'};
10871: }
10872: return unpack("%32C*",$unique);
10873: }
10874:
10875: sub recprefix {
10876: my $fucourseid=shift;
10877: my $prefix;
10878: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10879: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10880: $prefix=$env{"course.$fucourseid.internal.encpref"};
10881: } else {
10882: $prefix=$perlvar{'lonHostID'};
10883: }
10884: return unpack("%32C*",$prefix);
10885: }
10886:
10887: sub ireceipt {
10888: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10889:
10890: my $return =&recprefix($fucourseid).'-';
10891:
10892: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10893: $env{'request.state'} eq 'construct') {
10894: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10895: return $return;
10896: }
10897:
10898: my $cuname=unpack("%32C*",$funame);
10899: my $cudom=unpack("%32C*",$fudom);
10900: my $cucourseid=unpack("%32C*",$fucourseid);
10901: my $cusymb=unpack("%32C*",$fusymb);
10902: my $cunique=&recunique($fucourseid);
10903: my $cpart=unpack("%32S*",$part);
10904: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10905:
10906: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10907:
10908: $return.= ($cunique%$cuname+
10909: $cunique%$cudom+
10910: $cusymb%$cuname+
10911: $cusymb%$cudom+
10912: $cucourseid%$cuname+
10913: $cucourseid%$cudom+
10914: $cpart%$cuname+
10915: $cpart%$cudom);
10916: } else {
10917: $return.= ($cunique%$cuname+
10918: $cunique%$cudom+
10919: $cusymb%$cuname+
10920: $cusymb%$cudom+
10921: $cucourseid%$cuname+
10922: $cucourseid%$cudom);
10923: }
10924: return $return;
10925: }
10926:
10927: sub receipt {
10928: my ($part)=@_;
10929: my ($symb,$courseid,$domain,$name) = &whichuser();
10930: return &ireceipt($name,$domain,$courseid,$symb,$part);
10931: }
10932:
10933: sub whichuser {
10934: my ($passedsymb)=@_;
10935: my ($symb,$courseid,$domain,$name,$publicuser);
10936: if (defined($env{'form.grade_symb'})) {
10937: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10938: my $allowed=&allowed('vgr',$tmp_courseid);
10939: if (!$allowed &&
10940: exists($env{'request.course.sec'}) &&
10941: $env{'request.course.sec'} !~ /^\s*$/) {
10942: $allowed=&allowed('vgr',$tmp_courseid.
10943: '/'.$env{'request.course.sec'});
10944: }
10945: if ($allowed) {
10946: ($symb)=&get_env_multiple('form.grade_symb');
10947: $courseid=$tmp_courseid;
10948: ($domain)=&get_env_multiple('form.grade_domain');
10949: ($name)=&get_env_multiple('form.grade_username');
10950: return ($symb,$courseid,$domain,$name,$publicuser);
10951: }
10952: }
10953: if (!$passedsymb) {
10954: $symb=&symbread();
10955: } else {
10956: $symb=$passedsymb;
10957: }
10958: $courseid=$env{'request.course.id'};
10959: $domain=$env{'user.domain'};
10960: $name=$env{'user.name'};
10961: if ($name eq 'public' && $domain eq 'public') {
10962: if (!defined($env{'form.username'})) {
10963: $env{'form.username'}.=time.rand(10000000);
10964: }
10965: $name.=$env{'form.username'};
10966: }
10967: return ($symb,$courseid,$domain,$name,$publicuser);
10968:
10969: }
10970:
10971: # ------------------------------------------------------------ Serves up a file
10972: # returns either the contents of the file or
10973: # -1 if the file doesn't exist
10974: #
10975: # if the target is a file that was uploaded via DOCS,
10976: # a check will be made to see if a current copy exists on the local server,
10977: # if it does this will be served, otherwise a copy will be retrieved from
10978: # the home server for the course and stored in /home/httpd/html/userfiles on
10979: # the local server.
10980:
10981: sub getfile {
10982: my ($file) = @_;
10983: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10984: &repcopy($file);
10985: return &readfile($file);
10986: }
10987:
10988: sub repcopy_userfile {
10989: my ($file)=@_;
10990: my $londocroot = $perlvar{'lonDocRoot'};
10991: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10992: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10993: my ($cdom,$cnum,$filename) =
10994: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10995: my $uri="/uploaded/$cdom/$cnum/$filename";
10996: if (-e "$file") {
10997: # we already have a local copy, check it out
10998: my @fileinfo = stat($file);
10999: my $rtncode;
11000: my $info;
11001: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11002: if ($lwpresp ne 'ok') {
11003: # there is no such file anymore, even though we had a local copy
11004: if ($rtncode eq '404') {
11005: unlink($file);
11006: }
11007: return -1;
11008: }
11009: if ($info < $fileinfo[9]) {
11010: # nice, the file we have is up-to-date, just say okay
11011: return 'ok';
11012: } else {
11013: # the file is outdated, get rid of it
11014: unlink($file);
11015: }
11016: }
11017: # one way or the other, at this point, we don't have the file
11018: # construct the correct path for the file
11019: my @parts = ($cdom,$cnum);
11020: if ($filename =~ m|^(.+)/[^/]+$|) {
11021: push @parts, split(/\//,$1);
11022: }
11023: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11024: foreach my $part (@parts) {
11025: $path .= '/'.$part;
11026: if (!-e $path) {
11027: mkdir($path,0770);
11028: }
11029: }
11030: # now the path exists for sure
11031: # get a user agent
11032: my $ua=new LWP::UserAgent;
11033: my $transferfile=$file.'.in.transfer';
11034: # FIXME: this should flock
11035: if (-e $transferfile) { return 'ok'; }
11036: my $request;
11037: $uri=~s/^\///;
11038: my $homeserver = &homeserver($cnum,$cdom);
11039: my $protocol = $protocol{$homeserver};
11040: $protocol = 'http' if ($protocol ne 'https');
11041: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11042: my $response=$ua->request($request,$transferfile);
11043: # did it work?
11044: if ($response->is_error()) {
11045: unlink($transferfile);
11046: &logthis("Userfile repcopy failed for $uri");
11047: return -1;
11048: }
11049: # worked, rename the transfer file
11050: rename($transferfile,$file);
11051: return 'ok';
11052: }
11053:
11054: sub tokenwrapper {
11055: my $uri=shift;
11056: $uri=~s|^https?\://([^/]+)||;
11057: $uri=~s|^/||;
11058: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11059: my $token=$1;
11060: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11061: if ($udom && $uname && $file) {
11062: $file=~s|(\?\.*)*$||;
11063: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11064: my $homeserver = &homeserver($uname,$udom);
11065: my $protocol = $protocol{$homeserver};
11066: $protocol = 'http' if ($protocol ne 'https');
11067: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11068: (($uri=~/\?/)?'&':'?').'token='.$token.
11069: '&tokenissued='.$perlvar{'lonHostID'};
11070: } else {
11071: return '/adm/notfound.html';
11072: }
11073: }
11074:
11075: # call with reqtype HEAD: get last modification time
11076: # call with reqtype GET: get the file contents
11077: # Do not call this with reqtype GET for large files! It loads everything into memory
11078: #
11079: sub getuploaded {
11080: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11081: $uri=~s/^\///;
11082: my $homeserver = &homeserver($cnum,$cdom);
11083: my $protocol = $protocol{$homeserver};
11084: $protocol = 'http' if ($protocol ne 'https');
11085: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11086: my $ua=new LWP::UserAgent;
11087: my $request=new HTTP::Request($reqtype,$uri);
11088: my $response=$ua->request($request);
11089: $$rtncode = $response->code;
11090: if (! $response->is_success()) {
11091: return 'failed';
11092: }
11093: if ($reqtype eq 'HEAD') {
11094: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11095: } elsif ($reqtype eq 'GET') {
11096: $$info = $response->content;
11097: }
11098: return 'ok';
11099: }
11100:
11101: sub readfile {
11102: my $file = shift;
11103: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11104: my $fh;
11105: open($fh,"<$file");
11106: my $a='';
11107: while (my $line = <$fh>) { $a .= $line; }
11108: return $a;
11109: }
11110:
11111: sub filelocation {
11112: my ($dir,$file) = @_;
11113: my $location;
11114: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11115:
11116: if ($file =~ m-^/adm/-) {
11117: $file=~s-^/adm/wrapper/-/-;
11118: $file=~s-^/adm/coursedocs/showdoc/-/-;
11119: }
11120:
11121: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11122: $location = $file;
11123: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11124: my ($udom,$uname,$filename)=
11125: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11126: my $home=&homeserver($uname,$udom);
11127: my $is_me=0;
11128: my @ids=¤t_machine_ids();
11129: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11130: if ($is_me) {
11131: $location=propath($udom,$uname).'/userfiles/'.$filename;
11132: } else {
11133: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11134: $udom.'/'.$uname.'/'.$filename;
11135: }
11136: } elsif ($file =~ m-^/adm/-) {
11137: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11138: } else {
11139: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11140: $file=~s:^/(res|priv)/:/:;
11141: my $space=$1;
11142: if ( !( $file =~ m:^/:) ) {
11143: $location = $dir. '/'.$file;
11144: } else {
11145: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11146: }
11147: }
11148: $location=~s://+:/:g; # remove duplicate /
11149: while ($location=~m{/\.\./}) {
11150: if ($location =~ m{/[^/]+/\.\./}) {
11151: $location=~ s{/[^/]+/\.\./}{/}g;
11152: } else {
11153: $location=~ s{/\.\./}{/}g;
11154: }
11155: } #remove dir/..
11156: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11157: return $location;
11158: }
11159:
11160: sub hreflocation {
11161: my ($dir,$file)=@_;
11162: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11163: $file=filelocation($dir,$file);
11164: } elsif ($file=~m-^/adm/-) {
11165: $file=~s-^/adm/wrapper/-/-;
11166: $file=~s-^/adm/coursedocs/showdoc/-/-;
11167: }
11168: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11169: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11170: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11171: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11172: {/uploaded/$1/$2/}x;
11173: }
11174: if ($file=~ m{^/userfiles/}) {
11175: $file =~ s{^/userfiles/}{/uploaded/};
11176: }
11177: return $file;
11178: }
11179:
11180:
11181:
11182:
11183:
11184: sub current_machine_domains {
11185: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11186: }
11187:
11188: sub machine_domains {
11189: my ($hostname) = @_;
11190: my @domains;
11191: my %hostname = &all_hostnames();
11192: while( my($id, $name) = each(%hostname)) {
11193: # &logthis("-$id-$name-$hostname-");
11194: if ($hostname eq $name) {
11195: push(@domains,&host_domain($id));
11196: }
11197: }
11198: return @domains;
11199: }
11200:
11201: sub current_machine_ids {
11202: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11203: }
11204:
11205: sub machine_ids {
11206: my ($hostname) = @_;
11207: $hostname ||= &hostname($perlvar{'lonHostID'});
11208: my @ids;
11209: my %name_to_host = &all_names();
11210: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11211: return @{ $name_to_host{$hostname} };
11212: }
11213: return;
11214: }
11215:
11216: sub additional_machine_domains {
11217: my @domains;
11218: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11219: while( my $line = <$fh>) {
11220: $line =~ s/\s//g;
11221: push(@domains,$line);
11222: }
11223: return @domains;
11224: }
11225:
11226: sub default_login_domain {
11227: my $domain = $perlvar{'lonDefDomain'};
11228: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11229: foreach my $posdom (¤t_machine_domains(),
11230: &additional_machine_domains()) {
11231: if (lc($posdom) eq lc($testdomain)) {
11232: $domain=$posdom;
11233: last;
11234: }
11235: }
11236: return $domain;
11237: }
11238:
11239: # ------------------------------------------------------------- Declutters URLs
11240:
11241: sub declutter {
11242: my $thisfn=shift;
11243: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11244: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11245: $thisfn=~s/^\///;
11246: $thisfn=~s|^adm/wrapper/||;
11247: $thisfn=~s|^adm/coursedocs/showdoc/||;
11248: $thisfn=~s/^res\///;
11249: $thisfn=~s/^priv\///;
11250: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11251: $thisfn=~s/\?.+$//;
11252: }
11253: return $thisfn;
11254: }
11255:
11256: # ------------------------------------------------------------- Clutter up URLs
11257:
11258: sub clutter {
11259: my $thisfn='/'.&declutter(shift);
11260: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11261: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11262: $thisfn='/res'.$thisfn;
11263: }
11264: if ($thisfn !~m|^/adm|) {
11265: if ($thisfn =~ m|^/ext/|) {
11266: $thisfn='/adm/wrapper'.$thisfn;
11267: } else {
11268: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11269: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11270: if ($embstyle eq 'ssi'
11271: || ($embstyle eq 'hdn')
11272: || ($embstyle eq 'rat')
11273: || ($embstyle eq 'prv')
11274: || ($embstyle eq 'ign')) {
11275: #do nothing with these
11276: } elsif (($embstyle eq 'img')
11277: || ($embstyle eq 'emb')
11278: || ($embstyle eq 'wrp')) {
11279: $thisfn='/adm/wrapper'.$thisfn;
11280: } elsif ($embstyle eq 'unk'
11281: && $thisfn!~/\.(sequence|page)$/) {
11282: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11283: } else {
11284: # &logthis("Got a blank emb style");
11285: }
11286: }
11287: }
11288: return $thisfn;
11289: }
11290:
11291: sub clutter_with_no_wrapper {
11292: my $uri = &clutter(shift);
11293: if ($uri =~ m-^/adm/-) {
11294: $uri =~ s-^/adm/wrapper/-/-;
11295: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11296: }
11297: return $uri;
11298: }
11299:
11300: sub freeze_escape {
11301: my ($value)=@_;
11302: if (ref($value)) {
11303: $value=&nfreeze($value);
11304: return '__FROZEN__'.&escape($value);
11305: }
11306: return &escape($value);
11307: }
11308:
11309:
11310: sub thaw_unescape {
11311: my ($value)=@_;
11312: if ($value =~ /^__FROZEN__/) {
11313: substr($value,0,10,undef);
11314: $value=&unescape($value);
11315: return &thaw($value);
11316: }
11317: return &unescape($value);
11318: }
11319:
11320: sub correct_line_ends {
11321: my ($result)=@_;
11322: $$result =~s/\r\n/\n/mg;
11323: $$result =~s/\r/\n/mg;
11324: }
11325: # ================================================================ Main Program
11326:
11327: sub goodbye {
11328: &logthis("Starting Shut down");
11329: #not converted to using infrastruture and probably shouldn't be
11330: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11331: #converted
11332: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11333: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11334: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11335: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11336: #1.1 only
11337: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11338: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11339: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11340: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11341: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11342: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11343: &logthis(sprintf("%-20s is %s",'hits',$hits));
11344: &flushcourselogs();
11345: &logthis("Shutting down");
11346: }
11347:
11348: sub get_dns {
11349: my ($url,$func,$ignore_cache) = @_;
11350: if (!$ignore_cache) {
11351: my ($content,$cached)=
11352: &Apache::lonnet::is_cached_new('dns',$url);
11353: if ($cached) {
11354: &$func($content);
11355: return;
11356: }
11357: }
11358:
11359: my %alldns;
11360: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11361: foreach my $dns (<$config>) {
11362: next if ($dns !~ /^\^(\S*)/x);
11363: my $line = $1;
11364: my ($host,$protocol) = split(/:/,$line);
11365: if ($protocol ne 'https') {
11366: $protocol = 'http';
11367: }
11368: $alldns{$host} = $protocol;
11369: }
11370: while (%alldns) {
11371: my ($dns) = keys(%alldns);
11372: my $ua=new LWP::UserAgent;
11373: $ua->timeout(30);
11374: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11375: my $response=$ua->request($request);
11376: delete($alldns{$dns});
11377: next if ($response->is_error());
11378: my @content = split("\n",$response->content);
11379: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
11380: &$func(\@content);
11381: return;
11382: }
11383: close($config);
11384: my $which = (split('/',$url))[3];
11385: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11386: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11387: my @content = <$config>;
11388: &$func(\@content);
11389: return;
11390: }
11391: # ------------------------------------------------------------ Read domain file
11392: {
11393: my $loaded;
11394: my %domain;
11395:
11396: sub parse_domain_tab {
11397: my ($lines) = @_;
11398: foreach my $line (@$lines) {
11399: next if ($line =~ /^(\#|\s*$ )/x);
11400:
11401: chomp($line);
11402: my ($name,@elements) = split(/:/,$line,9);
11403: my %this_domain;
11404: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11405: 'lang_def', 'city', 'longi', 'lati',
11406: 'primary') {
11407: $this_domain{$field} = shift(@elements);
11408: }
11409: $domain{$name} = \%this_domain;
11410: }
11411: }
11412:
11413: sub reset_domain_info {
11414: undef($loaded);
11415: undef(%domain);
11416: }
11417:
11418: sub load_domain_tab {
11419: my ($ignore_cache) = @_;
11420: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11421: my $fh;
11422: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11423: my @lines = <$fh>;
11424: &parse_domain_tab(\@lines);
11425: }
11426: close($fh);
11427: $loaded = 1;
11428: }
11429:
11430: sub domain {
11431: &load_domain_tab() if (!$loaded);
11432:
11433: my ($name,$what) = @_;
11434: return if ( !exists($domain{$name}) );
11435:
11436: if (!$what) {
11437: return $domain{$name}{'description'};
11438: }
11439: return $domain{$name}{$what};
11440: }
11441:
11442: sub domain_info {
11443: &load_domain_tab() if (!$loaded);
11444: return %domain;
11445: }
11446:
11447: }
11448:
11449:
11450: # ------------------------------------------------------------- Read hosts file
11451: {
11452: my %hostname;
11453: my %hostdom;
11454: my %libserv;
11455: my $loaded;
11456: my %name_to_host;
11457: my %internetdom;
11458: my %LC_dns_serv;
11459:
11460: sub parse_hosts_tab {
11461: my ($file) = @_;
11462: foreach my $configline (@$file) {
11463: next if ($configline =~ /^(\#|\s*$ )/x);
11464: chomp($configline);
11465: if ($configline =~ /^\^/) {
11466: if ($configline =~ /^\^([\w.\-]+)/) {
11467: $LC_dns_serv{$1} = 1;
11468: }
11469: next;
11470: }
11471: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11472: $name=~s/\s//g;
11473: if ($id && $domain && $role && $name) {
11474: $hostname{$id}=$name;
11475: push(@{$name_to_host{$name}}, $id);
11476: $hostdom{$id}=$domain;
11477: if ($role eq 'library') { $libserv{$id}=$name; }
11478: if (defined($protocol)) {
11479: if ($protocol eq 'https') {
11480: $protocol{$id} = $protocol;
11481: } else {
11482: $protocol{$id} = 'http';
11483: }
11484: } else {
11485: $protocol{$id} = 'http';
11486: }
11487: if (defined($intdom)) {
11488: $internetdom{$id} = $intdom;
11489: }
11490: }
11491: }
11492: }
11493:
11494: sub reset_hosts_info {
11495: &purge_remembered();
11496: &reset_domain_info();
11497: &reset_hosts_ip_info();
11498: undef(%name_to_host);
11499: undef(%hostname);
11500: undef(%hostdom);
11501: undef(%libserv);
11502: undef($loaded);
11503: }
11504:
11505: sub load_hosts_tab {
11506: my ($ignore_cache) = @_;
11507: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11508: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11509: my @config = <$config>;
11510: &parse_hosts_tab(\@config);
11511: close($config);
11512: $loaded=1;
11513: }
11514:
11515: sub hostname {
11516: &load_hosts_tab() if (!$loaded);
11517:
11518: my ($lonid) = @_;
11519: return $hostname{$lonid};
11520: }
11521:
11522: sub all_hostnames {
11523: &load_hosts_tab() if (!$loaded);
11524:
11525: return %hostname;
11526: }
11527:
11528: sub all_names {
11529: &load_hosts_tab() if (!$loaded);
11530:
11531: return %name_to_host;
11532: }
11533:
11534: sub all_host_domain {
11535: &load_hosts_tab() if (!$loaded);
11536: return %hostdom;
11537: }
11538:
11539: sub is_library {
11540: &load_hosts_tab() if (!$loaded);
11541:
11542: return exists($libserv{$_[0]});
11543: }
11544:
11545: sub all_library {
11546: &load_hosts_tab() if (!$loaded);
11547:
11548: return %libserv;
11549: }
11550:
11551: sub unique_library {
11552: #2x reverse removes all hostnames that appear more than once
11553: my %unique = reverse &all_library();
11554: return reverse %unique;
11555: }
11556:
11557: sub get_servers {
11558: &load_hosts_tab() if (!$loaded);
11559:
11560: my ($domain,$type) = @_;
11561: my %possible_hosts = ($type eq 'library') ? %libserv
11562: : %hostname;
11563: my %result;
11564: if (ref($domain) eq 'ARRAY') {
11565: while ( my ($host,$hostname) = each(%possible_hosts)) {
11566: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11567: $result{$host} = $hostname;
11568: }
11569: }
11570: } else {
11571: while ( my ($host,$hostname) = each(%possible_hosts)) {
11572: if ($hostdom{$host} eq $domain) {
11573: $result{$host} = $hostname;
11574: }
11575: }
11576: }
11577: return %result;
11578: }
11579:
11580: sub get_unique_servers {
11581: my %unique = reverse &get_servers(@_);
11582: return reverse %unique;
11583: }
11584:
11585: sub host_domain {
11586: &load_hosts_tab() if (!$loaded);
11587:
11588: my ($lonid) = @_;
11589: return $hostdom{$lonid};
11590: }
11591:
11592: sub all_domains {
11593: &load_hosts_tab() if (!$loaded);
11594:
11595: my %seen;
11596: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11597: return @uniq;
11598: }
11599:
11600: sub internet_dom {
11601: &load_hosts_tab() if (!$loaded);
11602:
11603: my ($lonid) = @_;
11604: return $internetdom{$lonid};
11605: }
11606:
11607: sub is_LC_dns {
11608: &load_hosts_tab() if (!$loaded);
11609:
11610: my ($hostname) = @_;
11611: return exists($LC_dns_serv{$hostname});
11612: }
11613:
11614: }
11615:
11616: {
11617: my %iphost;
11618: my %name_to_ip;
11619: my %lonid_to_ip;
11620:
11621: sub get_hosts_from_ip {
11622: my ($ip) = @_;
11623: my %iphosts = &get_iphost();
11624: if (ref($iphosts{$ip})) {
11625: return @{$iphosts{$ip}};
11626: }
11627: return;
11628: }
11629:
11630: sub reset_hosts_ip_info {
11631: undef(%iphost);
11632: undef(%name_to_ip);
11633: undef(%lonid_to_ip);
11634: }
11635:
11636: sub get_host_ip {
11637: my ($lonid) = @_;
11638: if (exists($lonid_to_ip{$lonid})) {
11639: return $lonid_to_ip{$lonid};
11640: }
11641: my $name=&hostname($lonid);
11642: my $ip = gethostbyname($name);
11643: return if (!$ip || length($ip) ne 4);
11644: $ip=inet_ntoa($ip);
11645: $name_to_ip{$name} = $ip;
11646: $lonid_to_ip{$lonid} = $ip;
11647: return $ip;
11648: }
11649:
11650: sub get_iphost {
11651: my ($ignore_cache) = @_;
11652:
11653: if (!$ignore_cache) {
11654: if (%iphost) {
11655: return %iphost;
11656: }
11657: my ($ip_info,$cached)=
11658: &Apache::lonnet::is_cached_new('iphost','iphost');
11659: if ($cached) {
11660: %iphost = %{$ip_info->[0]};
11661: %name_to_ip = %{$ip_info->[1]};
11662: %lonid_to_ip = %{$ip_info->[2]};
11663: return %iphost;
11664: }
11665: }
11666:
11667: # get yesterday's info for fallback
11668: my %old_name_to_ip;
11669: my ($ip_info,$cached)=
11670: &Apache::lonnet::is_cached_new('iphost','iphost');
11671: if ($cached) {
11672: %old_name_to_ip = %{$ip_info->[1]};
11673: }
11674:
11675: my %name_to_host = &all_names();
11676: foreach my $name (keys(%name_to_host)) {
11677: my $ip;
11678: if (!exists($name_to_ip{$name})) {
11679: $ip = gethostbyname($name);
11680: if (!$ip || length($ip) ne 4) {
11681: if (defined($old_name_to_ip{$name})) {
11682: $ip = $old_name_to_ip{$name};
11683: &logthis("Can't find $name defaulting to old $ip");
11684: } else {
11685: &logthis("Name $name no IP found");
11686: next;
11687: }
11688: } else {
11689: $ip=inet_ntoa($ip);
11690: }
11691: $name_to_ip{$name} = $ip;
11692: } else {
11693: $ip = $name_to_ip{$name};
11694: }
11695: foreach my $id (@{ $name_to_host{$name} }) {
11696: $lonid_to_ip{$id} = $ip;
11697: }
11698: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11699: }
11700: &Apache::lonnet::do_cache_new('iphost','iphost',
11701: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11702: 48*60*60);
11703:
11704: return %iphost;
11705: }
11706:
11707: #
11708: # Given a DNS returns the loncapa host name for that DNS
11709: #
11710: sub host_from_dns {
11711: my ($dns) = @_;
11712: my @hosts;
11713: my $ip;
11714:
11715: if (exists($name_to_ip{$dns})) {
11716: $ip = $name_to_ip{$dns};
11717: }
11718: if (!$ip) {
11719: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11720: if (length($ip) == 4) {
11721: $ip = &IO::Socket::inet_ntoa($ip);
11722: }
11723: }
11724: if ($ip) {
11725: @hosts = get_hosts_from_ip($ip);
11726: return $hosts[0];
11727: }
11728: return undef;
11729: }
11730:
11731: sub get_internet_names {
11732: my ($lonid) = @_;
11733: return if ($lonid eq '');
11734: my ($idnref,$cached)=
11735: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11736: if ($cached) {
11737: return $idnref;
11738: }
11739: my $ip = &get_host_ip($lonid);
11740: my @hosts = &get_hosts_from_ip($ip);
11741: my %iphost = &get_iphost();
11742: my (@idns,%seen);
11743: foreach my $id (@hosts) {
11744: my $dom = &host_domain($id);
11745: my $prim_id = &domain($dom,'primary');
11746: my $prim_ip = &get_host_ip($prim_id);
11747: next if ($seen{$prim_ip});
11748: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11749: foreach my $id (@{$iphost{$prim_ip}}) {
11750: my $intdom = &internet_dom($id);
11751: unless (grep(/^\Q$intdom\E$/,@idns)) {
11752: push(@idns,$intdom);
11753: }
11754: }
11755: }
11756: $seen{$prim_ip} = 1;
11757: }
11758: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11759: }
11760:
11761: }
11762:
11763: sub all_loncaparevs {
11764: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11765: }
11766:
11767: BEGIN {
11768:
11769: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11770: unless ($readit) {
11771: {
11772: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11773: %perlvar = (%perlvar,%{$configvars});
11774: }
11775:
11776:
11777: # ------------------------------------------------------ Read spare server file
11778: {
11779: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11780:
11781: while (my $configline=<$config>) {
11782: chomp($configline);
11783: if ($configline) {
11784: my ($host,$type) = split(':',$configline,2);
11785: if (!defined($type) || $type eq '') { $type = 'default' };
11786: push(@{ $spareid{$type} }, $host);
11787: }
11788: }
11789: close($config);
11790: }
11791: # ------------------------------------------------------------ Read permissions
11792: {
11793: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11794:
11795: while (my $configline=<$config>) {
11796: chomp($configline);
11797: if ($configline) {
11798: my ($role,$perm)=split(/ /,$configline);
11799: if ($perm ne '') { $pr{$role}=$perm; }
11800: }
11801: }
11802: close($config);
11803: }
11804:
11805: # -------------------------------------------- Read plain texts for permissions
11806: {
11807: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11808:
11809: while (my $configline=<$config>) {
11810: chomp($configline);
11811: if ($configline) {
11812: my ($short,@plain)=split(/:/,$configline);
11813: %{$prp{$short}} = ();
11814: if (@plain > 0) {
11815: $prp{$short}{'std'} = $plain[0];
11816: for (my $i=1; $i<@plain; $i++) {
11817: $prp{$short}{'alt'.$i} = $plain[$i];
11818: }
11819: }
11820: }
11821: }
11822: close($config);
11823: }
11824:
11825: # ---------------------------------------------------------- Read package table
11826: {
11827: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11828:
11829: while (my $configline=<$config>) {
11830: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11831: chomp($configline);
11832: my ($short,$plain)=split(/:/,$configline);
11833: my ($pack,$name)=split(/\&/,$short);
11834: if ($plain ne '') {
11835: $packagetab{$pack.'&'.$name.'&name'}=$name;
11836: $packagetab{$short}=$plain;
11837: }
11838: }
11839: close($config);
11840: }
11841:
11842: # ---------------------------------------------------------- Read loncaparev table
11843: {
11844: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11845: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11846: while (my $configline=<$config>) {
11847: chomp($configline);
11848: my ($hostid,$loncaparev)=split(/:/,$configline);
11849: $loncaparevs{$hostid}=$loncaparev;
11850: }
11851: close($config);
11852: }
11853: }
11854: }
11855:
11856: # ---------------------------------------------------------- Read serverhostID table
11857: {
11858: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11859: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11860: while (my $configline=<$config>) {
11861: chomp($configline);
11862: my ($name,$id)=split(/:/,$configline);
11863: $serverhomeIDs{$name}=$id;
11864: }
11865: close($config);
11866: }
11867: }
11868: }
11869:
11870: {
11871: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11872: if (-e $file) {
11873: my $parser = HTML::LCParser->new($file);
11874: while (my $token = $parser->get_token()) {
11875: if ($token->[0] eq 'S') {
11876: my $item = $token->[1];
11877: my $name = $token->[2]{'name'};
11878: my $value = $token->[2]{'value'};
11879: if ($item ne '' && $name ne '' && $value ne '') {
11880: my $release = $parser->get_text();
11881: $release =~ s/(^\s*|\s*$ )//gx;
11882: $needsrelease{$item.':'.$name.':'.$value} = $release;
11883: }
11884: }
11885: }
11886: }
11887: }
11888:
11889: # ---------------------------------------------------------- Read managers table
11890: {
11891: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11892: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11893: while (my $configline=<$config>) {
11894: chomp($configline);
11895: next if ($configline =~ /^\#/);
11896: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11897: $managerstab{$configline} = 1;
11898: }
11899: }
11900: close($config);
11901: }
11902: }
11903: }
11904:
11905: # ------------- set up temporary directory
11906: {
11907: $tmpdir = LONCAPA::tempdir();
11908:
11909: }
11910:
11911: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11912: 'compress_threshold'=> 20_000,
11913: });
11914:
11915: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11916: $dumpcount=0;
11917: $locknum=0;
11918:
11919: &logtouch();
11920: &logthis('<font color="yellow">INFO: Read configuration</font>');
11921: $readit=1;
11922: {
11923: use integer;
11924: my $test=(2**32)+1;
11925: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11926: &logthis(" Detected 64bit platform ($_64bit)");
11927: }
11928: }
11929: }
11930:
11931: 1;
11932: __END__
11933:
11934: =pod
11935:
11936: =head1 NAME
11937:
11938: Apache::lonnet - Subroutines to ask questions about things in the network.
11939:
11940: =head1 SYNOPSIS
11941:
11942: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11943:
11944: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11945:
11946: Common parameters:
11947:
11948: =over 4
11949:
11950: =item *
11951:
11952: $uname : an internal username (if $cname expecting a course Id specifically)
11953:
11954: =item *
11955:
11956: $udom : a domain (if $cdom expecting a course's domain specifically)
11957:
11958: =item *
11959:
11960: $symb : a resource instance identifier
11961:
11962: =item *
11963:
11964: $namespace : the name of a .db file that contains the data needed or
11965: being set.
11966:
11967: =back
11968:
11969: =head1 OVERVIEW
11970:
11971: lonnet provides subroutines which interact with the
11972: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11973: about classes, users, and resources.
11974:
11975: For many of these objects you can also use this to store data about
11976: them or modify them in various ways.
11977:
11978: =head2 Symbs
11979:
11980: To identify a specific instance of a resource, LON-CAPA uses symbols
11981: or "symbs"X<symb>. These identifiers are built from the URL of the
11982: map, the resource number of the resource in the map, and the URL of
11983: the resource itself. The latter is somewhat redundant, but might help
11984: if maps change.
11985:
11986: An example is
11987:
11988: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11989:
11990: The respective map entry is
11991:
11992: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11993: title="Problem 2">
11994: </resource>
11995:
11996: Symbs are used by the random number generator, as well as to store and
11997: restore data specific to a certain instance of for example a problem.
11998:
11999: =head2 Storing And Retrieving Data
12000:
12001: X<store()>X<cstore()>X<restore()>Three of the most important functions
12002: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12003: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12004: is is the non-critical message twin of cstore. These functions are for
12005: handlers to store a perl hash to a user's permanent data space in an
12006: easy manner, and to retrieve it again on another call. It is expected
12007: that a handler would use this once at the beginning to retrieve data,
12008: and then again once at the end to send only the new data back.
12009:
12010: The data is stored in the user's data directory on the user's
12011: homeserver under the ID of the course.
12012:
12013: The hash that is returned by restore will have all of the previous
12014: value for all of the elements of the hash.
12015:
12016: Example:
12017:
12018: #creating a hash
12019: my %hash;
12020: $hash{'foo'}='bar';
12021:
12022: #storing it
12023: &Apache::lonnet::cstore(\%hash);
12024:
12025: #changing a value
12026: $hash{'foo'}='notbar';
12027:
12028: #adding a new value
12029: $hash{'bar'}='foo';
12030: &Apache::lonnet::cstore(\%hash);
12031:
12032: #retrieving the hash
12033: my %history=&Apache::lonnet::restore();
12034:
12035: #print the hash
12036: foreach my $key (sort(keys(%history))) {
12037: print("\%history{$key} = $history{$key}");
12038: }
12039:
12040: Will print out:
12041:
12042: %history{1:foo} = bar
12043: %history{1:keys} = foo:timestamp
12044: %history{1:timestamp} = 990455579
12045: %history{2:bar} = foo
12046: %history{2:foo} = notbar
12047: %history{2:keys} = foo:bar:timestamp
12048: %history{2:timestamp} = 990455580
12049: %history{bar} = foo
12050: %history{foo} = notbar
12051: %history{timestamp} = 990455580
12052: %history{version} = 2
12053:
12054: Note that the special hash entries C<keys>, C<version> and
12055: C<timestamp> were added to the hash. C<version> will be equal to the
12056: total number of versions of the data that have been stored. The
12057: C<timestamp> attribute will be the UNIX time the hash was
12058: stored. C<keys> is available in every historical section to list which
12059: keys were added or changed at a specific historical revision of a
12060: hash.
12061:
12062: B<Warning>: do not store the hash that restore returns directly. This
12063: will cause a mess since it will restore the historical keys as if the
12064: were new keys. I.E. 1:foo will become 1:1:foo etc.
12065:
12066: Calling convention:
12067:
12068: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
12069: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
12070:
12071: For more detailed information, see lonnet specific documentation.
12072:
12073: =head1 RETURN MESSAGES
12074:
12075: =over 4
12076:
12077: =item * B<con_lost>: unable to contact remote host
12078:
12079: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12080: when the connection is brought back up
12081:
12082: =item * B<con_failed>: unable to contact remote host and unable to save message
12083: for later delivery
12084:
12085: =item * B<error:>: an error a occurred, a description of the error follows the :
12086:
12087: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12088: that was requested
12089:
12090: =back
12091:
12092: =head1 PUBLIC SUBROUTINES
12093:
12094: =head2 Session Environment Functions
12095:
12096: =over 4
12097:
12098: =item *
12099: X<appenv()>
12100: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12101: the user envirnoment file, and will be restored for each access this
12102: user makes during this session, also modifies the %env for the current
12103: process. Optional rolesarrayref - if defined contains a reference to an array
12104: of roles which are exempt from the restriction on modifying user.role entries
12105: in the user's environment.db and in %env.
12106:
12107: =item *
12108: X<delenv()>
12109: B<delenv($delthis,$regexp)>: removes all items from the session
12110: environment file that begin with $delthis. If the
12111: optional second arg - $regexp - is true, $delthis is treated as a
12112: regular expression, otherwise \Q$delthis\E is used.
12113: The values are also deleted from the current processes %env.
12114:
12115: =item * get_env_multiple($name)
12116:
12117: gets $name from the %env hash, it seemlessly handles the cases where multiple
12118: values may be defined and end up as an array ref.
12119:
12120: returns an array of values
12121:
12122: =back
12123:
12124: =head2 User Information
12125:
12126: =over 4
12127:
12128: =item *
12129: X<queryauthenticate()>
12130: B<queryauthenticate($uname,$udom)>: try to determine user's current
12131: authentication scheme
12132:
12133: =item *
12134: X<authenticate()>
12135: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12136: authenticate user from domain's lib servers (first use the current
12137: one). C<$upass> should be the users password.
12138: $checkdefauth is optional (value is 1 if a check should be made to
12139: authenticate user using default authentication method, and allow
12140: account creation if username does not have account in the domain).
12141: $clientcancheckhost is optional (value is 1 if checking whether the
12142: server can host will occur on the client side in lonauth.pm).
12143:
12144: =item *
12145: X<homeserver()>
12146: B<homeserver($uname,$udom)>: find the server which has
12147: the user's directory and files (there must be only one), this caches
12148: the answer, and also caches if there is a borken connection.
12149:
12150: =item *
12151: X<idget()>
12152: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12153: (IDs are a unique resource in a domain, there must be only 1 ID per
12154: username, and only 1 username per ID in a specific domain) (returns
12155: hash: id=>name,id=>name)
12156:
12157: =item *
12158: X<idrget()>
12159: B<idrget($udom,@unames)>: find the IDs behind a list of
12160: usernames (returns hash: name=>id,name=>id)
12161:
12162: =item *
12163: X<idput()>
12164: B<idput($udom,%ids)>: store away a list of names and associated IDs
12165:
12166: =item *
12167: X<rolesinit()>
12168: B<rolesinit($udom,$username)>: get user privileges.
12169: returns user role, first access and timer interval hashes
12170:
12171: =item *
12172: X<privileged()>
12173: B<privileged($username,$domain)>: returns a true if user has a
12174: privileged and active role (i.e. su or dc), false otherwise.
12175:
12176: =item *
12177: X<getsection()>
12178: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12179: course $cname, return section name/number or '' for "not in course"
12180: and '-1' for "no section"
12181:
12182: =item *
12183: X<userenvironment()>
12184: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12185: passed in @what from the requested user's environment, returns a hash
12186:
12187: =item *
12188: X<userlog_query()>
12189: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12190: activity.log file. %filters defines filters applied when parsing the
12191: log file. These can be start or end timestamps, or the type of action
12192: - log to look for Login or Logout events, check for Checkin or
12193: Checkout, role for role selection. The response is in the form
12194: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12195: escaped strings of the action recorded in the activity.log file.
12196:
12197: =back
12198:
12199: =head2 User Roles
12200:
12201: =over 4
12202:
12203: =item *
12204:
12205: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12206: F: full access
12207: U,I,K: authentication modes (cxx only)
12208: '': forbidden
12209: 1: user needs to choose course
12210: 2: browse allowed
12211: A: passphrase authentication needed
12212:
12213: =item *
12214:
12215: constructaccess($url,$setpriv) : check for access to construction space URL
12216:
12217: See if the owner domain and name in the URL match those in the
12218: expected environment. If so, return three element list
12219: ($ownername,$ownerdomain,$ownerhome).
12220:
12221: Otherwise return the null string.
12222:
12223: If second argument 'setpriv' is true, it assigns the privileges,
12224: and returns the same three element list, unless the owner has
12225: blocked "ad hoc" Domain Coordinator access to the Author Space,
12226: in which case the null string is returned.
12227:
12228: =item *
12229:
12230: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12231: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12232: and course level
12233:
12234: =item *
12235:
12236: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12237: (rolesplain.tab); plain text explanation of a user role term.
12238: $type is Course (default) or Community.
12239: If $forcedefault evaluates to true, text returned will be default
12240: text for $type. Otherwise, if this is a course, the text returned
12241: will be a custom name for the role (if defined in the course's
12242: environment). If no custom name is defined the default is returned.
12243:
12244: =item *
12245:
12246: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
12247: All arguments are optional. Returns a hash of a roles, either for
12248: co-author/assistant author roles for a user's Construction Space
12249: (default), or if $context is 'userroles', roles for the user himself,
12250: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12251: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12252: For each key, value is set to colon-separated start and end times for
12253: the role. If no username and domain are specified, will default to
12254: current user/domain. Types, roles, and roledoms are references to arrays
12255: of role statuses (active, future or previous), roles
12256: (e.g., cc,in, st etc.) and domains of the roles which can be used
12257: to restrict the list of roles reported. If no array ref is
12258: provided for types, will default to return only active roles.
12259:
12260: =item *
12261:
12262: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12263: user: $uname:$udom has a role in the course: $cdom_$cnum. Additional
12264: optional arguments are: $type (if role checking is to be restricted to
12265: certain user status types -- previous (expired roles), active (currently
12266: available roles) or future (roles available in the future), and
12267: $hideprivileged -- if true will not report course roles for users who
12268: have active Domain Coordinator or Super User roles.
12269:
12270: =back
12271:
12272: =head2 User Modification
12273:
12274: =over 4
12275:
12276: =item *
12277:
12278: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12279: user for the level given by URL. Optional start and end dates (leave empty
12280: string or zero for "no date")
12281:
12282: =item *
12283:
12284: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12285: change a users, password, possible return values are: ok,
12286: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12287: refused
12288:
12289: =item *
12290:
12291: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12292:
12293: =item *
12294:
12295: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12296: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12297:
12298: will update user information (firstname,middlename,lastname,generation,
12299: permanentemail), and if forceid is true, student/employee ID also.
12300: A user's institutional affiliation(s) can also be updated.
12301: User information fields will not be overwritten with empty entries
12302: unless the field is included in the $candelete array reference.
12303: This array is included when a single user is modified via "Manage Users",
12304: or when Autoupdate.pl is run by cron in a domain.
12305:
12306: =item *
12307:
12308: modifystudent
12309:
12310: modify a student's enrollment and identification information.
12311: The course id is resolved based on the current users environment.
12312: This means the envoking user must be a course coordinator or otherwise
12313: associated with a course.
12314:
12315: This call is essentially a wrapper for lonnet::modifyuser and
12316: lonnet::modify_student_enrollment
12317:
12318: Inputs:
12319:
12320: =over 4
12321:
12322: =item B<$udom> Student's loncapa domain
12323:
12324: =item B<$uname> Student's loncapa login name
12325:
12326: =item B<$uid> Student/Employee ID
12327:
12328: =item B<$umode> Student's authentication mode
12329:
12330: =item B<$upass> Student's password
12331:
12332: =item B<$first> Student's first name
12333:
12334: =item B<$middle> Student's middle name
12335:
12336: =item B<$last> Student's last name
12337:
12338: =item B<$gene> Student's generation
12339:
12340: =item B<$usec> Student's section in course
12341:
12342: =item B<$end> Unix time of the roles expiration
12343:
12344: =item B<$start> Unix time of the roles start date
12345:
12346: =item B<$forceid> If defined, allow $uid to be changed
12347:
12348: =item B<$desiredhome> server to use as home server for student
12349:
12350: =item B<$email> Student's permanent e-mail address
12351:
12352: =item B<$type> Type of enrollment (auto or manual)
12353:
12354: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12355:
12356: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12357:
12358: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12359:
12360: =item B<$context> role change context (shown in User Management Logs display in a course)
12361:
12362: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12363:
12364: =back
12365:
12366: =item *
12367:
12368: modify_student_enrollment
12369:
12370: Change a students enrollment status in a class. The environment variable
12371: 'role.request.course' must be defined for this function to proceed.
12372:
12373: Inputs:
12374:
12375: =over 4
12376:
12377: =item $udom, students domain
12378:
12379: =item $uname, students name
12380:
12381: =item $uid, students user id
12382:
12383: =item $first, students first name
12384:
12385: =item $middle
12386:
12387: =item $last
12388:
12389: =item $gene
12390:
12391: =item $usec
12392:
12393: =item $end
12394:
12395: =item $start
12396:
12397: =item $type
12398:
12399: =item $locktype
12400:
12401: =item $cid
12402:
12403: =item $selfenroll
12404:
12405: =item $context
12406:
12407: =back
12408:
12409:
12410: =item *
12411:
12412: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12413: custom role; give a custom role to a user for the level given by URL. Specify
12414: name and domain of role author, and role name
12415:
12416: =item *
12417:
12418: revokerole($udom,$uname,$url,$role) : revoke a role for url
12419:
12420: =item *
12421:
12422: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12423:
12424: =back
12425:
12426: =head2 Course Infomation
12427:
12428: =over 4
12429:
12430: =item *
12431:
12432: coursedescription($courseid,$options) : returns a hash of information about the
12433: specified course id, including all environment settings for the
12434: course, the description of the course will be in the hash under the
12435: key 'description'
12436:
12437: $options is an optional parameter that if supplied is a hash reference that controls
12438: what how this function works. It has the following key/values:
12439:
12440: =over 4
12441:
12442: =item freshen_cache
12443:
12444: If defined, and the environment cache for the course is valid, it is
12445: returned in the returned hash.
12446:
12447: =item one_time
12448:
12449: If defined, the last cache time is set to _now_
12450:
12451: =item user
12452:
12453: If defined, the supplied username is used instead of the current user.
12454:
12455:
12456: =back
12457:
12458: =item *
12459:
12460: resdata($name,$domain,$type,@which) : request for current parameter
12461: setting for a specific $type, where $type is either 'course' or 'user',
12462: @what should be a list of parameters to ask about. This routine caches
12463: answers for 5 minutes.
12464:
12465: =item *
12466:
12467: get_courseresdata($courseid, $domain) : dump the entire course resource
12468: data base, returning a hash that is keyed by the resource name and has
12469: values that are the resource value. I believe that the timestamps and
12470: versions are also returned.
12471:
12472: =back
12473:
12474: =head2 Course Modification
12475:
12476: =over 4
12477:
12478: =item *
12479:
12480: writecoursepref($courseid,%prefs) : write preferences (environment
12481: database) for a course
12482:
12483: =item *
12484:
12485: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12486:
12487: =item *
12488:
12489: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12490:
12491: =item *
12492:
12493: is_course($courseid), is_course($cdom, $cnum)
12494:
12495: Accepts either a combined $courseid (in the form of domain_courseid) or the
12496: two component version $cdom, $cnum. It checks if the specified course exists.
12497:
12498: Returns:
12499: undef if the course doesn't exist, otherwise
12500: in scalar context the combined courseid.
12501: in list context the two components of the course identifier, domain and
12502: courseid.
12503:
12504: =back
12505:
12506: =head2 Resource Subroutines
12507:
12508: =over 4
12509:
12510: =item *
12511:
12512: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12513:
12514: =item *
12515:
12516: repcopy($filename) : subscribes to the requested file, and attempts to
12517: replicate from the owning library server, Might return
12518: 'unavailable', 'not_found', 'forbidden', 'ok', or
12519: 'bad_request', also attempts to grab the metadata for the
12520: resource. Expects the local filesystem pathname
12521: (/home/httpd/html/res/....)
12522:
12523: =back
12524:
12525: =head2 Resource Information
12526:
12527: =over 4
12528:
12529: =item *
12530:
12531: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12532: a vairety of different possible values, $varname should be a request
12533: string, and the other parameters can be used to specify who and what
12534: one is asking about.
12535:
12536: Possible values for $varname are environment.lastname (or other item
12537: from the envirnment hash), user.name (or someother aspect about the
12538: user), resource.0.maxtries (or some other part and parameter of a
12539: resource)
12540:
12541: =item *
12542:
12543: directcondval($number) : get current value of a condition; reads from a state
12544: string
12545:
12546: =item *
12547:
12548: condval($condidx) : value of condition index based on state
12549:
12550: =item *
12551:
12552: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12553: resource's metadata, $what should be either a specific key, or either
12554: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12555: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12556:
12557: this function automatically caches all requests
12558:
12559: =item *
12560:
12561: metadata_query($query,$custom,$customshow) : make a metadata query against the
12562: network of library servers; returns file handle of where SQL and regex results
12563: will be stored for query
12564:
12565: =item *
12566:
12567: symbread($filename) : return symbolic list entry (filename argument optional);
12568: returns the data handle
12569:
12570: =item *
12571:
12572: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12573: and is a possible symb for the URL in $thisfn, and if is an encrypted
12574: resource that the user accessed using /enc/ returns a 1 on success, 0
12575: on failure, user must be in a course, as it assumes the existence of
12576: the course initial hash, and uses $env('request.course.id'}. The third
12577: arg is an optional reference to a scalar. If this arg is passed in the
12578: call to symbverify, it will be set to 1 if the symb has been set to be
12579: encrypted; otherwise it will be null.
12580:
12581: =item *
12582:
12583: symbclean($symb) : removes versions numbers from a symb, returns the
12584: cleaned symb
12585:
12586: =item *
12587:
12588: is_on_map($uri) : checks if the $uri is somewhere on the current
12589: course map, user must be in a course for it to work.
12590:
12591: =item *
12592:
12593: numval($salt) : return random seed value (addend for rndseed)
12594:
12595: =item *
12596:
12597: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12598: a random seed, all arguments are optional, if they aren't sent it uses the
12599: environment to derive them. Note: if symb isn't sent and it can't get one
12600: from &symbread it will use the current time as its return value
12601:
12602: =item *
12603:
12604: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12605: unfakeable, receipt
12606:
12607: =item *
12608:
12609: receipt() : API to ireceipt working off of env values; given out to users
12610:
12611: =item *
12612:
12613: countacc($url) : count the number of accesses to a given URL
12614:
12615: =item *
12616:
12617: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12618:
12619: =item *
12620:
12621: checkin($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 $tcrsid)
12622:
12623: =item *
12624:
12625: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12626:
12627: =item *
12628:
12629: devalidate($symb) : devalidate temporary spreadsheet calculations,
12630: forcing spreadsheet to reevaluate the resource scores next time.
12631:
12632: =item *
12633:
12634: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group)
12635:
12636: Determine if the current user should be able to edit a particular resource,
12637: when viewing in course context.
12638: (a) When viewing resource used to determine if "Edit" item is included in
12639: Functions.
12640: (b) When displaying folder contents in course editor, used to determine if
12641: "Edit" link will be displayed alongside resource.
12642:
12643: input: 3 args -- filename (decluttered), course number and course domain.
12644: output: array of four scalars --
12645: $cfile -- url for file editing if editable on current server
12646: $home -- homeserver of resource (i.e., for author if published,
12647: or course if uploaded.).
12648: $switchserver -- 1 if server switch will be needed.
12649: $uploaded -- 1 if resource is a file uploaded to a course.
12650:
12651: =item *
12652:
12653: is_course_upload($file,$cnum,$cdom)
12654:
12655: Used in course context to determine if current file was uploaded to
12656: the course (i.e., would be found in /userfiles/docs on the course's
12657: homeserver.
12658:
12659: input: 3 args -- filename (decluttered), course number and course domain.
12660: output: boolean -- 1 if file was uploaded.
12661:
12662: =back
12663:
12664: =head2 Storing/Retreiving Data
12665:
12666: =over 4
12667:
12668: =item *
12669:
12670: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12671: for this url; hashref needs to be given and should be a \%hashname; the
12672: remaining args aren't required and if they aren't passed or are '' they will
12673: be derived from the env
12674:
12675: =item *
12676:
12677: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12678: uses critical subroutine
12679:
12680: =item *
12681:
12682: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12683: all args are optional
12684:
12685: =item *
12686:
12687: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12688: dumps the complete (or key matching regexp) namespace into a hash
12689: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12690: normally &store()ed into
12691:
12692: $range should be either an integer '100' (give me the first 100
12693: matching records)
12694: or be two integers sperated by a - with no spaces
12695: '30-50' (give me the 30th through the 50th matching
12696: records)
12697:
12698:
12699: =item *
12700:
12701: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12702: replaces a &store() version of data with a replacement set of data
12703: for a particular resource in a namespace passed in the $storehash hash
12704: reference
12705:
12706: =item *
12707:
12708: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12709: works very similar to store/cstore, but all data is stored in a
12710: temporary location and can be reset using tmpreset, $storehash should
12711: be a hash reference, returns nothing on success
12712:
12713: =item *
12714:
12715: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12716: similar to restore, but all data is stored in a temporary location and
12717: can be reset using tmpreset. Returns a hash of values on success,
12718: error string otherwise.
12719:
12720: =item *
12721:
12722: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12723: deltes all keys for $symb form the temporary storage hash.
12724:
12725: =item *
12726:
12727: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12728: reference filled in from namesp ($udom and $uname are optional)
12729:
12730: =item *
12731:
12732: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12733: namesp ($udom and $uname are optional)
12734:
12735: =item *
12736:
12737: dump($namespace,$udom,$uname,$regexp,$range) :
12738: dumps the complete (or key matching regexp) namespace into a hash
12739: ($udom, $uname, $regexp, $range are optional)
12740:
12741: $range should be either an integer '100' (give me the first 100
12742: matching records)
12743: or be two integers sperated by a - with no spaces
12744: '30-50' (give me the 30th through the 50th matching
12745: records)
12746: =item *
12747:
12748: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12749: $store can be a scalar, an array reference, or if the amount to be
12750: incremented is > 1, a hash reference.
12751:
12752: ($udom and $uname are optional)
12753:
12754: =item *
12755:
12756: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12757: ($udom and $uname are optional)
12758:
12759: =item *
12760:
12761: cput($namespace,$storehash,$udom,$uname) : critical put
12762: ($udom and $uname are optional)
12763:
12764: =item *
12765:
12766: newput($namespace,$storehash,$udom,$uname) :
12767:
12768: Attempts to store the items in the $storehash, but only if they don't
12769: currently exist, if this succeeds you can be certain that you have
12770: successfully created a new key value pair in the $namespace db.
12771:
12772:
12773: Args:
12774: $namespace: name of database to store values to
12775: $storehash: hashref to store to the db
12776: $udom: (optional) domain of user containing the db
12777: $uname: (optional) name of user caontaining the db
12778:
12779: Returns:
12780: 'ok' -> succeeded in storing all keys of $storehash
12781: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12782: least <key> already existed in the db (other
12783: requested keys may also already exist)
12784: 'error: <msg>' -> unable to tie the DB or other error occurred
12785: 'con_lost' -> unable to contact request server
12786: 'refused' -> action was not allowed by remote machine
12787:
12788:
12789: =item *
12790:
12791: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12792: reference filled in from namesp (encrypts the return communication)
12793: ($udom and $uname are optional)
12794:
12795: =item *
12796:
12797: log($udom,$name,$home,$message) : write to permanent log for user; use
12798: critical subroutine
12799:
12800: =item *
12801:
12802: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12803: array reference filled in from namespace found in domain level on either
12804: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12805:
12806: =item *
12807:
12808: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12809: domain level either on specified domain server ($uhome) or primary domain
12810: server ($udom and $uhome are optional)
12811:
12812: =item *
12813:
12814: get_domain_defaults($target_domain) : returns hash with defaults for
12815: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12816: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12817: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12818: Values are retrieved from cache (if current), or from domain's configuration.db
12819: (if available), or lastly from values in lonTabs/dns_domain,tab,
12820: or lonTabs/domain.tab.
12821:
12822: %domdefaults = &get_auth_defaults($target_domain);
12823:
12824: =back
12825:
12826: =head2 Network Status Functions
12827:
12828: =over 4
12829:
12830: =item *
12831:
12832: dirlist() : return directory list based on URI (first arg).
12833:
12834: Inputs: 1 required, 5 optional.
12835:
12836: =over
12837:
12838: =item
12839: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12840:
12841: =item
12842: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12843:
12844: =item
12845: $username - username of user/course to be listed. Extracted from $uri if absent.
12846:
12847: =item
12848: $getpropath - boolean: 1 if prepend path using &propath().
12849:
12850: =item
12851: $getuserdir - boolean: 1 if prepend path for "userfiles".
12852:
12853: =item
12854: $alternateRoot - path to prepend in place of path from $uri.
12855:
12856: =back
12857:
12858: Returns: Array of up to two items.
12859:
12860: =over
12861:
12862: a reference to an array of files/subdirectories
12863:
12864: =over
12865:
12866: Each element in the array of files/subdirectories is a & separated list of
12867: item name and the result of running stat on the item. If dirlist was requested
12868: for a file instead of a directory, the item name will be ''. For a directory
12869: listing, if the item is a metadata file, the element will end &N&M
12870: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12871: default copyright set (1).
12872:
12873: =back
12874:
12875: a scalar containing error condition (if encountered).
12876:
12877: =over
12878:
12879: =item
12880: no_host (no homeserver identified for $username:$domain).
12881:
12882: =item
12883: no_such_host (server contacted for listing not identified as valid host).
12884:
12885: =item
12886: con_lost (connection to remote server failed).
12887:
12888: =item
12889: refused (invalid $username:$domain received on lond side).
12890:
12891: =item
12892: no_such_dir (directory at specified path on lond side does not exist).
12893:
12894: =item
12895: empty (directory at specified path on lond side is empty).
12896:
12897: =over
12898:
12899: This is currently not encountered because the &ls3, &ls2,
12900: &ls (_handler) routines on the lond side do not filter out
12901: . and .. from a directory listing.
12902:
12903: =back
12904:
12905: =back
12906:
12907: =back
12908:
12909: =item *
12910:
12911: spareserver() : find server with least workload from spare.tab
12912:
12913:
12914: =item *
12915:
12916: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12917: if there is no corresponding loncapa host.
12918:
12919: =back
12920:
12921:
12922: =head2 Apache Request
12923:
12924: =over 4
12925:
12926: =item *
12927:
12928: ssi($url,%hash) : server side include, does a complete request cycle on url to
12929: localhost, posts hash
12930:
12931: =back
12932:
12933: =head2 Data to String to Data
12934:
12935: =over 4
12936:
12937: =item *
12938:
12939: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12940: and '&' separators, supports elements that are arrayrefs and hashrefs
12941:
12942: =item *
12943:
12944: hashref2str($hashref) : convert a hashref into a string complete with
12945: escaping and '=' and '&' separators, supports elements that are
12946: arrayrefs and hashrefs
12947:
12948: =item *
12949:
12950: arrayref2str($arrayref) : convert an arrayref into a string complete
12951: with escaping and '&' separators, supports elements that are arrayrefs
12952: and hashrefs
12953:
12954: =item *
12955:
12956: str2hash($string) : convert string to hash using unescaping and
12957: splitting on '=' and '&', supports elements that are arrayrefs and
12958: hashrefs
12959:
12960: =item *
12961:
12962: str2array($string) : convert string to hash using unescaping and
12963: splitting on '&', supports elements that are arrayrefs and hashrefs
12964:
12965: =back
12966:
12967: =head2 Logging Routines
12968:
12969:
12970: These routines allow one to make log messages in the lonnet.log and
12971: lonnet.perm logfiles.
12972:
12973: =over 4
12974:
12975: =item *
12976:
12977: logtouch() : make sure the logfile, lonnet.log, exists
12978:
12979: =item *
12980:
12981: logthis() : append message to the normal lonnet.log file, it gets
12982: preiodically rolled over and deleted.
12983:
12984: =item *
12985:
12986: logperm() : append a permanent message to lonnet.perm.log, this log
12987: file never gets deleted by any automated portion of the system, only
12988: messages of critical importance should go in here.
12989:
12990:
12991: =back
12992:
12993: =head2 General File Helper Routines
12994:
12995: =over 4
12996:
12997: =item *
12998:
12999: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13000: (a) files in /uploaded
13001: (i) If a local copy of the file exists -
13002: compares modification date of local copy with last-modified date for
13003: definitive version stored on home server for course. If local copy is
13004: stale, requests a new version from the home server and stores it.
13005: If the original has been removed from the home server, then local copy
13006: is unlinked.
13007: (ii) If local copy does not exist -
13008: requests the file from the home server and stores it.
13009:
13010: If $caller is 'uploadrep':
13011: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13012: for request for files originally uploaded via DOCS.
13013: - returns 'ok' if fresh local copy now available, -1 otherwise.
13014:
13015: Otherwise:
13016: This indicates a call from the content generation phase of the request.
13017: - returns the entire contents of the file or -1.
13018:
13019: (b) files in /res
13020: - returns the entire contents of a file or -1;
13021: it properly subscribes to and replicates the file if neccessary.
13022:
13023:
13024: =item *
13025:
13026: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13027: reference
13028:
13029: returns either a stat() list of data about the file or an empty list
13030: if the file doesn't exist or couldn't find out about it (connection
13031: problems or user unknown)
13032:
13033: =item *
13034:
13035: filelocation($dir,$file) : returns file system location of a file
13036: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13037: directory that relative $file lookups are to looked in ($dir of /a/dir
13038: and a file of ../bob will become /a/bob)
13039:
13040: =item *
13041:
13042: hreflocation($dir,$file) : returns file system location or a URL; same as
13043: filelocation except for hrefs
13044:
13045: =item *
13046:
13047: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
13048:
13049: =back
13050:
13051: =head2 Usererfile file routines (/uploaded*)
13052:
13053: =over 4
13054:
13055: =item *
13056:
13057: userfileupload(): main rotine for putting a file in a user or course's
13058: filespace, arguments are,
13059:
13060: formname - required - this is the name of the element in $env where the
13061: filename, and the contents of the file to create/modifed exist
13062: the filename is in $env{'form.'.$formname.'.filename'} and the
13063: contents of the file is located in $env{'form.'.$formname}
13064: context - if coursedoc, store the file in the course of the active role
13065: of the current user;
13066: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13067: if 'canceloverwrite': delete file in tmp/overwrites directory
13068: subdir - required - subdirectory to put the file in under ../userfiles/
13069: if undefined, it will be placed in "unknown"
13070:
13071: (This routine calls clean_filename() to remove any dangerous
13072: characters from the filename, and then calls finuserfileupload() to
13073: complete the transaction)
13074:
13075: returns either the url of the uploaded file (/uploaded/....) if successful
13076: and /adm/notfound.html if unsuccessful
13077:
13078: =item *
13079:
13080: clean_filename(): routine for cleaing a filename up for storage in
13081: userfile space, argument is:
13082:
13083: filename - proposed filename
13084:
13085: returns: the new clean filename
13086:
13087: =item *
13088:
13089: finishuserfileupload(): routine that creates and sends the file to
13090: userspace, probably shouldn't be called directly
13091:
13092: docuname: username or courseid of destination for the file
13093: docudom: domain of user/course of destination for the file
13094: formname: same as for userfileupload()
13095: fname: filename (including subdirectories) for the file
13096: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13097: allfiles: reference to hash used to store objects found by parser
13098: codebase: reference to hash used for codebases of java objects found by parser
13099: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13100: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13101: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13102: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13103: context: if 'overwrite', will move the uploaded file from its temporary location to
13104: userfiles to facilitate overwriting a previously uploaded file with same name.
13105: mimetype: reference to scalar to accommodate mime type determined
13106: from File::MMagic if $parser = parse.
13107:
13108: returns either the url of the uploaded file (/uploaded/....) if successful
13109: and /adm/notfound.html if unsuccessful (or an error message if context
13110: was 'overwrite').
13111:
13112:
13113: =item *
13114:
13115: renameuserfile(): renames an existing userfile to a new name
13116:
13117: Args:
13118: docuname: username or courseid of destination for the file
13119: docudom: domain of user/course of destination for the file
13120: old: current file name (including any subdirs under userfiles)
13121: new: desired file name (including any subdirs under userfiles)
13122:
13123: =item *
13124:
13125: mkdiruserfile(): creates a directory is a userfiles dir
13126:
13127: Args:
13128: docuname: username or courseid of destination for the file
13129: docudom: domain of user/course of destination for the file
13130: dir: dir to create (including any subdirs under userfiles)
13131:
13132: =item *
13133:
13134: removeuserfile(): removes a file that exists in userfiles
13135:
13136: Args:
13137: docuname: username or courseid of destination for the file
13138: docudom: domain of user/course of destination for the file
13139: fname: filname to delete (including any subdirs under userfiles)
13140:
13141: =item *
13142:
13143: removeuploadedurl(): convience function for removeuserfile()
13144:
13145: Args:
13146: url: a full /uploaded/... url to delete
13147:
13148: =item *
13149:
13150: get_portfile_permissions():
13151: Args:
13152: domain: domain of user or course contain the portfolio files
13153: user: name of user or num of course contain the portfolio files
13154: Returns:
13155: hashref of a dump of the proper file_permissions.db
13156:
13157:
13158: =item *
13159:
13160: get_access_controls():
13161:
13162: Args:
13163: current_permissions: the hash ref returned from get_portfile_permissions()
13164: group: (optional) the group you want the files associated with
13165: file: (optional) the file you want access info on
13166:
13167: Returns:
13168: a hash (keys are file names) of hashes containing
13169: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13170: values are XML containing access control settings (see below)
13171:
13172: Internal notes:
13173:
13174: access controls are stored in file_permissions.db as key=value pairs.
13175: key -> path to file/file_name\0uniqueID:scope_end_start
13176: where scope -> public,guest,course,group,domains or users.
13177: end -> UNIX time for end of access (0 -> no end date)
13178: start -> UNIX time for start of access
13179:
13180: value -> XML description of access control
13181: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13182: <start></start>
13183: <end></end>
13184:
13185: <password></password> for scope type = guest
13186:
13187: <domain></domain> for scope type = course or group
13188: <number></number>
13189: <roles id="">
13190: <role></role>
13191: <access></access>
13192: <section></section>
13193: <group></group>
13194: </roles>
13195:
13196: <dom></dom> for scope type = domains
13197:
13198: <users> for scope type = users
13199: <user>
13200: <uname></uname>
13201: <udom></udom>
13202: </user>
13203: </users>
13204: </scope>
13205:
13206: Access data is also aggregated for each file in an additional key=value pair:
13207: key -> path to file/file_name\0accesscontrol
13208: value -> reference to hash
13209: hash contains key = value pairs
13210: where key = uniqueID:scope_end_start
13211: value = UNIX time record was last updated
13212:
13213: Used to improve speed of look-ups of access controls for each file.
13214:
13215: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13216:
13217: modify_access_controls():
13218:
13219: Modifies access controls for a portfolio file
13220: Args
13221: 1. file name
13222: 2. reference to hash of required changes,
13223: 3. domain
13224: 4. username
13225: where domain,username are the domain of the portfolio owner
13226: (either a user or a course)
13227:
13228: Returns:
13229: 1. result of additions or updates ('ok' or 'error', with error message).
13230: 2. result of deletions ('ok' or 'error', with error message).
13231: 3. reference to hash of any new or updated access controls.
13232: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13233: key = integer (inbound ID)
13234: value = uniqueID
13235:
13236: =back
13237:
13238: =head2 HTTP Helper Routines
13239:
13240: =over 4
13241:
13242: =item *
13243:
13244: escape() : unpack non-word characters into CGI-compatible hex codes
13245:
13246: =item *
13247:
13248: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13249:
13250: =back
13251:
13252: =head1 PRIVATE SUBROUTINES
13253:
13254: =head2 Underlying communication routines (Shouldn't call)
13255:
13256: =over 4
13257:
13258: =item *
13259:
13260: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13261:
13262: =item *
13263:
13264: reply() : uses subreply to send a message to remote machine, logs all failures
13265:
13266: =item *
13267:
13268: critical() : passes a critical message to another server; if cannot
13269: get through then place message in connection buffer directory and
13270: returns con_delayed, if incapable of saving message, returns
13271: con_failed
13272:
13273: =item *
13274:
13275: reconlonc() : tries to reconnect lonc client processes.
13276:
13277: =back
13278:
13279: =head2 Resource Access Logging
13280:
13281: =over 4
13282:
13283: =item *
13284:
13285: flushcourselogs() : flush (save) buffer logs and access logs
13286:
13287: =item *
13288:
13289: courselog($what) : save message for course in hash
13290:
13291: =item *
13292:
13293: courseacclog($what) : save message for course using &courselog(). Perform
13294: special processing for specific resource types (problems, exams, quizzes, etc).
13295:
13296: =item *
13297:
13298: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13299: as a PerlChildExitHandler
13300:
13301: =back
13302:
13303: =head2 Other
13304:
13305: =over 4
13306:
13307: =item *
13308:
13309: symblist($mapname,%newhash) : update symbolic storage links
13310:
13311: =back
13312:
13313: =cut
13314:
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