File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.1193:
download - view:
text,
annotated -
select for diffs
Wed Oct 31 12:54:23 2012 UTC (11 years, 8 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- Determine whether user can edit a particular resource in a course
moved from lonmenu.pm to lonnet::can_edit_resource() to facilitate reuse
- is_course_upload() moved from lonmenu.pm to lonnet.pm
- file input elements for Upload File and IMS Import moved to fieldsets,
toggle display by clicking icon/link
- Discontinue use of static extpickframe.html and extpickcode.html for
External Resource
- Edit link to right of resource title in Course Editor added for uploaded
html, css, js, txt, and for published resources which user has rights to
edit
- IMS import directly into course -- first page moved from pop-up to
inline fieldset; other routines re-named to reflect change in phases
supported in pop-up window.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1193 2012/10/31 12:54:23 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) = @_;
2667: my ($cfile,$home,$switchserver,$uploaded);
2668: if ($file ne '') {
2669: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2670: $uploaded = &is_course_upload($file,$cnum,$cdom);
2671: if ($uploaded) {
2672: $home=&homeserver($cnum,$cdom);
2673: if ($file =~/\.(htm|html|css|js|txt)$/) {
2674: $cfile = &hreflocation('',$file);
2675: }
2676: }
2677: }
2678: unless ($uploaded) {
2679: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2680: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2681: # Check that the user has permission to edit this resource
2682: my $setpriv = 1;
2683: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2684: if (defined($cfudom)) {
2685: $home=&homeserver($cfuname,$cfudom);
2686: $cfile=$file;
2687: }
2688: }
2689: if (($cfile ne '') && (($home ne '') && ($home ne 'no_host'))) {
2690: my @ids=¤t_machine_ids();
2691: unless (grep(/^\Q$home\E$/,@ids)) {
2692: $switchserver=1;
2693: }
2694: }
2695: }
2696: return ($cfile,$home,$switchserver,$uploaded);
2697: }
2698:
2699: sub is_course_upload {
2700: my ($file,$cnum,$cdom) = @_;
2701: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2702: $uploadpath =~ s{^\/}{};
2703: if (($file =~ m{^\Q$uploadpath\E/userfiles/docs/}) ||
2704: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/docs/})) {
2705: return 1;
2706: }
2707: return;
2708: }
2709:
2710: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2711: # input: action, courseID, current domain, intended
2712: # path to file, source of file, instruction to parse file for objects,
2713: # ref to hash for embedded objects,
2714: # ref to hash for codebase of java objects.
2715: # reference to scalar to accommodate mime type determined
2716: # from File::MMagic if $parser = parse.
2717: #
2718: # output: url to file (if action was uploaddoc),
2719: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2720: #
2721: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2722: # course.
2723: #
2724: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2725: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2726: # course's home server.
2727: #
2728: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2729: # be copied from $source (current location) to
2730: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2731: # and will then be copied to
2732: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2733: # course's home server.
2734: #
2735: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2736: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2737: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2738: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2739: # in course's home server.
2740: #
2741:
2742: sub process_coursefile {
2743: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2744: $mimetype)=@_;
2745: my $fetchresult;
2746: my $home=&homeserver($docuname,$docudom);
2747: if ($action eq 'propagate') {
2748: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2749: $home);
2750: } else {
2751: my $fpath = '';
2752: my $fname = $file;
2753: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2754: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2755: my $filepath = &build_filepath($fpath);
2756: if ($action eq 'copy') {
2757: if ($source eq '') {
2758: $fetchresult = 'no source file';
2759: return $fetchresult;
2760: } else {
2761: my $destination = $filepath.'/'.$fname;
2762: rename($source,$destination);
2763: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2764: $home);
2765: }
2766: } elsif ($action eq 'uploaddoc') {
2767: open(my $fh,'>'.$filepath.'/'.$fname);
2768: print $fh $env{'form.'.$source};
2769: close($fh);
2770: if ($parser eq 'parse') {
2771: my $mm = new File::MMagic;
2772: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2773: if ($type eq 'text/html') {
2774: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2775: unless ($parse_result eq 'ok') {
2776: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2777: }
2778: }
2779: if (ref($mimetype)) {
2780: $$mimetype = $type;
2781: }
2782: }
2783: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2784: $home);
2785: if ($fetchresult eq 'ok') {
2786: return '/uploaded/'.$fpath.'/'.$fname;
2787: } else {
2788: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2789: ' to host '.$home.': '.$fetchresult);
2790: return '/adm/notfound.html';
2791: }
2792: }
2793: }
2794: unless ( $fetchresult eq 'ok') {
2795: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2796: ' to host '.$home.': '.$fetchresult);
2797: }
2798: return $fetchresult;
2799: }
2800:
2801: sub build_filepath {
2802: my ($fpath) = @_;
2803: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2804: unless ($fpath eq '') {
2805: my @parts=split('/',$fpath);
2806: foreach my $part (@parts) {
2807: $filepath.= '/'.$part;
2808: if ((-e $filepath)!=1) {
2809: mkdir($filepath,0777);
2810: }
2811: }
2812: }
2813: return $filepath;
2814: }
2815:
2816: sub store_edited_file {
2817: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2818: my $file = $primary_url;
2819: $file =~ s#^/uploaded/$docudom/$docuname/##;
2820: my $fpath = '';
2821: my $fname = $file;
2822: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2823: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2824: my $filepath = &build_filepath($fpath);
2825: open(my $fh,'>'.$filepath.'/'.$fname);
2826: print $fh $content;
2827: close($fh);
2828: my $home=&homeserver($docuname,$docudom);
2829: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2830: $home);
2831: if ($$fetchresult eq 'ok') {
2832: return '/uploaded/'.$fpath.'/'.$fname;
2833: } else {
2834: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2835: ' to host '.$home.': '.$$fetchresult);
2836: return '/adm/notfound.html';
2837: }
2838: }
2839:
2840: sub clean_filename {
2841: my ($fname,$args)=@_;
2842: # Replace Windows backslashes by forward slashes
2843: $fname=~s/\\/\//g;
2844: if (!$args->{'keep_path'}) {
2845: # Get rid of everything but the actual filename
2846: $fname=~s/^.*\/([^\/]+)$/$1/;
2847: }
2848: # Replace spaces by underscores
2849: $fname=~s/\s+/\_/g;
2850: # Replace all other weird characters by nothing
2851: $fname=~s{[^/\w\.\-]}{}g;
2852: # Replace all .\d. sequences with _\d. so they no longer look like version
2853: # numbers
2854: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2855: return $fname;
2856: }
2857: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2858: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2859: # image with the same aspect ratio as the original, but with dimensions which do
2860: # not exceed $resizewidth and $resizeheight.
2861:
2862: sub resizeImage {
2863: my ($img_path,$resizewidth,$resizeheight) = @_;
2864: my $ima = Image::Magick->new;
2865: my $resized;
2866: if (-e $img_path) {
2867: $ima->Read($img_path);
2868: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2869: my $width = $ima->Get('width');
2870: my $height = $ima->Get('height');
2871: if ($width > $resizewidth) {
2872: my $factor = $width/$resizewidth;
2873: my $newheight = $height/$factor;
2874: $ima->Scale(width=>$resizewidth,height=>$newheight);
2875: $resized = 1;
2876: }
2877: }
2878: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2879: my $width = $ima->Get('width');
2880: my $height = $ima->Get('height');
2881: if ($height > $resizeheight) {
2882: my $factor = $height/$resizeheight;
2883: my $newwidth = $width/$factor;
2884: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2885: $resized = 1;
2886: }
2887: }
2888: if ($resized) {
2889: $ima->Write($img_path);
2890: }
2891: }
2892: return;
2893: }
2894:
2895: # --------------- Take an uploaded file and put it into the userfiles directory
2896: # input: $formname - the contents of the file are in $env{"form.$formname"}
2897: # the desired filename is in $env{"form.$formname.filename"}
2898: # $context - possible values: coursedoc, existingfile, overwrite,
2899: # canceloverwrite, or ''.
2900: # if 'coursedoc': upload to the current course
2901: # if 'existingfile': write file to tmp/overwrites directory
2902: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2903: # $context is passed as argument to &finishuserfileupload
2904: # $subdir - directory in userfile to store the file into
2905: # $parser - instruction to parse file for objects ($parser = parse)
2906: # $allfiles - reference to hash for embedded objects
2907: # $codebase - reference to hash for codebase of java objects
2908: # $desuname - username for permanent storage of uploaded file
2909: # $dsetudom - domain for permanaent storage of uploaded file
2910: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2911: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2912: # $resizewidth - width (pixels) to which to resize uploaded image
2913: # $resizeheight - height (pixels) to which to resize uploaded image
2914: # $mimetype - reference to scalar to accommodate mime type determined
2915: # from File::MMagic.
2916: #
2917: # output: url of file in userspace, or error: <message>
2918: # or /adm/notfound.html if failure to upload occurse
2919:
2920: sub userfileupload {
2921: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2922: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2923: if (!defined($subdir)) { $subdir='unknown'; }
2924: my $fname=$env{'form.'.$formname.'.filename'};
2925: $fname=&clean_filename($fname);
2926: # See if there is anything left
2927: unless ($fname) { return 'error: no uploaded file'; }
2928: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2929: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2930: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2931: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2932: my $now = time;
2933: my $filepath;
2934: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2935: $filepath = 'tmp/helprequests/'.$now;
2936: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2937: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2938: '_'.$env{'user.domain'}.'/pending';
2939: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2940: my ($docuname,$docudom);
2941: if ($destudom) {
2942: $docudom = $destudom;
2943: } else {
2944: $docudom = $env{'user.domain'};
2945: }
2946: if ($destuname) {
2947: $docuname = $destuname;
2948: } else {
2949: $docuname = $env{'user.name'};
2950: }
2951: if (exists($env{'form.group'})) {
2952: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2953: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2954: }
2955: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2956: if ($context eq 'canceloverwrite') {
2957: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2958: if (-e $tempfile) {
2959: my @info = stat($tempfile);
2960: if ($info[9] eq $env{'form.timestamp'}) {
2961: unlink($tempfile);
2962: }
2963: }
2964: return;
2965: }
2966: }
2967: # Create the directory if not present
2968: my @parts=split(/\//,$filepath);
2969: my $fullpath = $perlvar{'lonDaemons'};
2970: for (my $i=0;$i<@parts;$i++) {
2971: $fullpath .= '/'.$parts[$i];
2972: if ((-e $fullpath)!=1) {
2973: mkdir($fullpath,0777);
2974: }
2975: }
2976: open(my $fh,'>'.$fullpath.'/'.$fname);
2977: print $fh $env{'form.'.$formname};
2978: close($fh);
2979: if ($context eq 'existingfile') {
2980: my @info = stat($fullpath.'/'.$fname);
2981: return ($fullpath.'/'.$fname,$info[9]);
2982: } else {
2983: return $fullpath.'/'.$fname;
2984: }
2985: }
2986: if ($subdir eq 'scantron') {
2987: $fname = 'scantron_orig_'.$fname;
2988: } else {
2989: $fname="$subdir/$fname";
2990: }
2991: if ($context eq 'coursedoc') {
2992: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2993: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2994: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2995: return &finishuserfileupload($docuname,$docudom,
2996: $formname,$fname,$parser,$allfiles,
2997: $codebase,$thumbwidth,$thumbheight,
2998: $resizewidth,$resizeheight,$context,$mimetype);
2999: } else {
3000: $fname=$env{'form.folder'}.'/'.$fname;
3001: return &process_coursefile('uploaddoc',$docuname,$docudom,
3002: $fname,$formname,$parser,
3003: $allfiles,$codebase,$mimetype);
3004: }
3005: } elsif (defined($destuname)) {
3006: my $docuname=$destuname;
3007: my $docudom=$destudom;
3008: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3009: $parser,$allfiles,$codebase,
3010: $thumbwidth,$thumbheight,
3011: $resizewidth,$resizeheight,$context,$mimetype);
3012: } else {
3013: my $docuname=$env{'user.name'};
3014: my $docudom=$env{'user.domain'};
3015: if (exists($env{'form.group'})) {
3016: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3017: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3018: }
3019: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3020: $parser,$allfiles,$codebase,
3021: $thumbwidth,$thumbheight,
3022: $resizewidth,$resizeheight,$context,$mimetype);
3023: }
3024: }
3025:
3026: sub finishuserfileupload {
3027: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3028: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3029: my $path=$docudom.'/'.$docuname.'/';
3030: my $filepath=$perlvar{'lonDocRoot'};
3031:
3032: my ($fnamepath,$file,$fetchthumb);
3033: $file=$fname;
3034: if ($fname=~m|/|) {
3035: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3036: $path.=$fnamepath.'/';
3037: }
3038: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3039: my $count;
3040: for ($count=4;$count<=$#parts;$count++) {
3041: $filepath.="/$parts[$count]";
3042: if ((-e $filepath)!=1) {
3043: mkdir($filepath,0777);
3044: }
3045: }
3046:
3047: # Save the file
3048: {
3049: if (!open(FH,'>'.$filepath.'/'.$file)) {
3050: &logthis('Failed to create '.$filepath.'/'.$file);
3051: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3052: return '/adm/notfound.html';
3053: }
3054: if ($context eq 'overwrite') {
3055: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3056: my $target = $filepath.'/'.$file;
3057: if (-e $source) {
3058: my @info = stat($source);
3059: if ($info[9] eq $env{'form.timestamp'}) {
3060: unless (&File::Copy::move($source,$target)) {
3061: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3062: return "Moving from $source failed";
3063: }
3064: } else {
3065: return "Temporary file: $source had unexpected date/time for last modification";
3066: }
3067: } else {
3068: return "Temporary file: $source missing";
3069: }
3070: } elsif (!print FH ($env{'form.'.$formname})) {
3071: &logthis('Failed to write to '.$filepath.'/'.$file);
3072: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3073: return '/adm/notfound.html';
3074: }
3075: close(FH);
3076: if ($resizewidth && $resizeheight) {
3077: my $mm = new File::MMagic;
3078: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3079: if ($mime_type =~ m{^image/}) {
3080: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3081: }
3082: }
3083: }
3084: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3085: if (ref($mimetype)) {
3086: if ($$mimetype eq '') {
3087: my $mm = new File::MMagic;
3088: my $type = $mm->checktype_filename($filepath.'/'.$file);
3089: $$mimetype = $type;
3090: }
3091: }
3092: }
3093: if ($parser eq 'parse') {
3094: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3095: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3096: $allfiles,$codebase);
3097: unless ($parse_result eq 'ok') {
3098: &logthis('Failed to parse '.$filepath.$file.
3099: ' for embedded media: '.$parse_result);
3100: }
3101: }
3102: }
3103: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3104: my $input = $filepath.'/'.$file;
3105: my $output = $filepath.'/'.'tn-'.$file;
3106: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3107: system("convert -sample $thumbsize $input $output");
3108: if (-e $filepath.'/'.'tn-'.$file) {
3109: $fetchthumb = 1;
3110: }
3111: }
3112:
3113: # Notify homeserver to grep it
3114: #
3115: my $docuhome=&homeserver($docuname,$docudom);
3116: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3117: if ($fetchresult eq 'ok') {
3118: if ($fetchthumb) {
3119: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3120: if ($thumbresult ne 'ok') {
3121: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3122: $docuhome.': '.$thumbresult);
3123: }
3124: }
3125: #
3126: # Return the URL to it
3127: return '/uploaded/'.$path.$file;
3128: } else {
3129: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3130: ': '.$fetchresult);
3131: return '/adm/notfound.html';
3132: }
3133: }
3134:
3135: sub extract_embedded_items {
3136: my ($fullpath,$allfiles,$codebase,$content) = @_;
3137: my @state = ();
3138: my (%lastids,%related,%shockwave,%flashvars);
3139: my %javafiles = (
3140: codebase => '',
3141: code => '',
3142: archive => ''
3143: );
3144: my %mediafiles = (
3145: src => '',
3146: movie => '',
3147: );
3148: my $p;
3149: if ($content) {
3150: $p = HTML::LCParser->new($content);
3151: } else {
3152: $p = HTML::LCParser->new($fullpath);
3153: }
3154: while (my $t=$p->get_token()) {
3155: if ($t->[0] eq 'S') {
3156: my ($tagname, $attr) = ($t->[1],$t->[2]);
3157: push(@state, $tagname);
3158: if (lc($tagname) eq 'allow') {
3159: &add_filetype($allfiles,$attr->{'src'},'src');
3160: }
3161: if (lc($tagname) eq 'img') {
3162: &add_filetype($allfiles,$attr->{'src'},'src');
3163: }
3164: if (lc($tagname) eq 'a') {
3165: &add_filetype($allfiles,$attr->{'href'},'href');
3166: }
3167: if (lc($tagname) eq 'script') {
3168: my $src;
3169: if ($attr->{'archive'} =~ /\.jar$/i) {
3170: &add_filetype($allfiles,$attr->{'archive'},'archive');
3171: } else {
3172: if ($attr->{'src'} ne '') {
3173: $src = $attr->{'src'};
3174: &add_filetype($allfiles,$src,'src');
3175: }
3176: }
3177: my $text = $p->get_trimmed_text();
3178: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3179: my @swfargs = split(/,/,$1);
3180: foreach my $item (@swfargs) {
3181: $item =~ s/["']//g;
3182: $item =~ s/^\s+//;
3183: $item =~ s/\s+$//;
3184: }
3185: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3186: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3187: push(@{$related{$swfargs[0]}},$swfargs[2]);
3188: } else {
3189: $related{$swfargs[0]} = [$swfargs[2]];
3190: }
3191: }
3192: }
3193: }
3194: if (lc($tagname) eq 'link') {
3195: if (lc($attr->{'rel'}) eq 'stylesheet') {
3196: &add_filetype($allfiles,$attr->{'href'},'href');
3197: }
3198: }
3199: if (lc($tagname) eq 'object' ||
3200: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3201: foreach my $item (keys(%javafiles)) {
3202: $javafiles{$item} = '';
3203: }
3204: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3205: $lastids{lc($tagname)} = $attr->{'id'};
3206: }
3207: }
3208: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3209: my $name = lc($attr->{'name'});
3210: foreach my $item (keys(%javafiles)) {
3211: if ($name eq $item) {
3212: $javafiles{$item} = $attr->{'value'};
3213: last;
3214: }
3215: }
3216: my $pathfrom;
3217: foreach my $item (keys(%mediafiles)) {
3218: if ($name eq $item) {
3219: $pathfrom = $attr->{'value'};
3220: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3221: &add_filetype($allfiles,$pathfrom,$name);
3222: last;
3223: }
3224: }
3225: if ($name eq 'flashvars') {
3226: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3227: }
3228: if ($pathfrom ne '') {
3229: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3230: $pathfrom);
3231: }
3232: }
3233: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3234: foreach my $item (keys(%javafiles)) {
3235: if ($attr->{$item}) {
3236: $javafiles{$item} = $attr->{$item};
3237: last;
3238: }
3239: }
3240: foreach my $item (keys(%mediafiles)) {
3241: if ($attr->{$item}) {
3242: &add_filetype($allfiles,$attr->{$item},$item);
3243: last;
3244: }
3245: }
3246: if (lc($tagname) eq 'embed') {
3247: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3248: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3249: $attr->{'src'});
3250: }
3251: }
3252: }
3253: if ($t->[4] =~ m{/>$}) {
3254: pop(@state);
3255: }
3256: } elsif ($t->[0] eq 'E') {
3257: my ($tagname) = ($t->[1]);
3258: if ($javafiles{'codebase'} ne '') {
3259: $javafiles{'codebase'} .= '/';
3260: }
3261: if (lc($tagname) eq 'applet' ||
3262: lc($tagname) eq 'object' ||
3263: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3264: ) {
3265: foreach my $item (keys(%javafiles)) {
3266: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3267: my $file=$javafiles{'codebase'}.$javafiles{$item};
3268: &add_filetype($allfiles,$file,$item);
3269: }
3270: }
3271: }
3272: pop @state;
3273: }
3274: }
3275: foreach my $id (sort(keys(%flashvars))) {
3276: if ($shockwave{$id} ne '') {
3277: my @pairs = split(/\&/,$flashvars{$id});
3278: foreach my $pair (@pairs) {
3279: my ($key,$value) = split(/\=/,$pair);
3280: if ($key eq 'thumb') {
3281: &add_filetype($allfiles,$value,$key);
3282: } elsif ($key eq 'content') {
3283: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3284: my ($ext) = ($value =~ /\.([^.]+)$/);
3285: if ($ext ne '') {
3286: &add_filetype($allfiles,$path.$value,$ext);
3287: }
3288: }
3289: }
3290: }
3291: }
3292: return 'ok';
3293: }
3294:
3295: sub add_filetype {
3296: my ($allfiles,$file,$type)=@_;
3297: if (exists($allfiles->{$file})) {
3298: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3299: push(@{$allfiles->{$file}}, &escape($type));
3300: }
3301: } else {
3302: @{$allfiles->{$file}} = (&escape($type));
3303: }
3304: }
3305:
3306: sub embedded_dependency {
3307: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3308: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3309: if (($identifier ne '') &&
3310: (ref($related->{$identifier}) eq 'ARRAY') &&
3311: ($pathfrom ne '')) {
3312: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3313: foreach my $dep (@{$related->{$identifier}}) {
3314: &add_filetype($allfiles,$path.$dep,'object');
3315: }
3316: }
3317: }
3318: return;
3319: }
3320:
3321: sub removeuploadedurl {
3322: my ($url)=@_;
3323: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3324: return &removeuserfile($uname,$udom,$fname);
3325: }
3326:
3327: sub removeuserfile {
3328: my ($docuname,$docudom,$fname)=@_;
3329: my $home=&homeserver($docuname,$docudom);
3330: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3331: if ($result eq 'ok') {
3332: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3333: my $metafile = $fname.'.meta';
3334: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3335: my $url = "/uploaded/$docudom/$docuname/$fname";
3336: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3337: my $sqlresult =
3338: &update_portfolio_table($docuname,$docudom,$file,
3339: 'portfolio_metadata',$group,
3340: 'delete');
3341: }
3342: }
3343: return $result;
3344: }
3345:
3346: sub mkdiruserfile {
3347: my ($docuname,$docudom,$dir)=@_;
3348: my $home=&homeserver($docuname,$docudom);
3349: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3350: }
3351:
3352: sub renameuserfile {
3353: my ($docuname,$docudom,$old,$new)=@_;
3354: my $home=&homeserver($docuname,$docudom);
3355: my $result = &reply("renameuserfile:$docudom:$docuname:".
3356: &escape("$old").':'.&escape("$new"),$home);
3357: if ($result eq 'ok') {
3358: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3359: my $oldmeta = $old.'.meta';
3360: my $newmeta = $new.'.meta';
3361: my $metaresult =
3362: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3363: my $url = "/uploaded/$docudom/$docuname/$old";
3364: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3365: my $sqlresult =
3366: &update_portfolio_table($docuname,$docudom,$file,
3367: 'portfolio_metadata',$group,
3368: 'delete');
3369: }
3370: }
3371: return $result;
3372: }
3373:
3374: # ------------------------------------------------------------------------- Log
3375:
3376: sub log {
3377: my ($dom,$nam,$hom,$what)=@_;
3378: return critical("log:$dom:$nam:$what",$hom);
3379: }
3380:
3381: # ------------------------------------------------------------------ Course Log
3382: #
3383: # This routine flushes several buffers of non-mission-critical nature
3384: #
3385:
3386: sub flushcourselogs {
3387: &logthis('Flushing log buffers');
3388: #
3389: # course logs
3390: # This is a log of all transactions in a course, which can be used
3391: # for data mining purposes
3392: #
3393: # It also collects the courseid database, which lists last transaction
3394: # times and course titles for all courseids
3395: #
3396: my %courseidbuffer=();
3397: foreach my $crsid (keys(%courselogs)) {
3398: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3399: &escape($courselogs{$crsid}),
3400: $coursehombuf{$crsid}) eq 'ok') {
3401: delete $courselogs{$crsid};
3402: } else {
3403: &logthis('Failed to flush log buffer for '.$crsid);
3404: if (length($courselogs{$crsid})>40000) {
3405: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3406: " exceeded maximum size, deleting.</font>");
3407: delete $courselogs{$crsid};
3408: }
3409: }
3410: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3411: 'description' => $coursedescrbuf{$crsid},
3412: 'inst_code' => $courseinstcodebuf{$crsid},
3413: 'type' => $coursetypebuf{$crsid},
3414: 'owner' => $courseownerbuf{$crsid},
3415: };
3416: }
3417: #
3418: # Write course id database (reverse lookup) to homeserver of courses
3419: # Is used in pickcourse
3420: #
3421: foreach my $crs_home (keys(%courseidbuffer)) {
3422: my $response = &courseidput(&host_domain($crs_home),
3423: $courseidbuffer{$crs_home},
3424: $crs_home,'timeonly');
3425: }
3426: #
3427: # File accesses
3428: # Writes to the dynamic metadata of resources to get hit counts, etc.
3429: #
3430: foreach my $entry (keys(%accesshash)) {
3431: if ($entry =~ /___count$/) {
3432: my ($dom,$name);
3433: ($dom,$name,undef)=
3434: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3435: if (! defined($dom) || $dom eq '' ||
3436: ! defined($name) || $name eq '') {
3437: my $cid = $env{'request.course.id'};
3438: $dom = $env{'request.'.$cid.'.domain'};
3439: $name = $env{'request.'.$cid.'.num'};
3440: }
3441: my $value = $accesshash{$entry};
3442: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3443: my %temphash=($url => $value);
3444: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3445: if ($result eq 'ok') {
3446: delete $accesshash{$entry};
3447: }
3448: } else {
3449: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3450: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3451: my %temphash=($entry => $accesshash{$entry});
3452: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3453: delete $accesshash{$entry};
3454: }
3455: }
3456: }
3457: #
3458: # Roles
3459: # Reverse lookup of user roles for course faculty/staff and co-authorship
3460: #
3461: foreach my $entry (keys(%userrolehash)) {
3462: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3463: split(/\:/,$entry);
3464: if (&Apache::lonnet::put('nohist_userroles',
3465: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3466: $rudom,$runame) eq 'ok') {
3467: delete $userrolehash{$entry};
3468: }
3469: }
3470: #
3471: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3472: #
3473: my %domrolebuffer = ();
3474: foreach my $entry (keys(%domainrolehash)) {
3475: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3476: if ($domrolebuffer{$rudom}) {
3477: $domrolebuffer{$rudom}.='&'.&escape($entry).
3478: '='.&escape($domainrolehash{$entry});
3479: } else {
3480: $domrolebuffer{$rudom}.=&escape($entry).
3481: '='.&escape($domainrolehash{$entry});
3482: }
3483: delete $domainrolehash{$entry};
3484: }
3485: foreach my $dom (keys(%domrolebuffer)) {
3486: my %servers = &get_servers($dom,'library');
3487: foreach my $tryserver (keys(%servers)) {
3488: unless (&reply('domroleput:'.$dom.':'.
3489: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3490: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3491: }
3492: }
3493: }
3494: $dumpcount++;
3495: }
3496:
3497: sub courselog {
3498: my $what=shift;
3499: $what=time.':'.$what;
3500: unless ($env{'request.course.id'}) { return ''; }
3501: $coursedombuf{$env{'request.course.id'}}=
3502: $env{'course.'.$env{'request.course.id'}.'.domain'};
3503: $coursenumbuf{$env{'request.course.id'}}=
3504: $env{'course.'.$env{'request.course.id'}.'.num'};
3505: $coursehombuf{$env{'request.course.id'}}=
3506: $env{'course.'.$env{'request.course.id'}.'.home'};
3507: $coursedescrbuf{$env{'request.course.id'}}=
3508: $env{'course.'.$env{'request.course.id'}.'.description'};
3509: $courseinstcodebuf{$env{'request.course.id'}}=
3510: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3511: $courseownerbuf{$env{'request.course.id'}}=
3512: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3513: $coursetypebuf{$env{'request.course.id'}}=
3514: $env{'course.'.$env{'request.course.id'}.'.type'};
3515: if (defined $courselogs{$env{'request.course.id'}}) {
3516: $courselogs{$env{'request.course.id'}}.='&'.$what;
3517: } else {
3518: $courselogs{$env{'request.course.id'}}.=$what;
3519: }
3520: if (length($courselogs{$env{'request.course.id'}})>4048) {
3521: &flushcourselogs();
3522: }
3523: }
3524:
3525: sub courseacclog {
3526: my $fnsymb=shift;
3527: unless ($env{'request.course.id'}) { return ''; }
3528: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3529: if ($fnsymb=~/$LONCAPA::assess_re/) {
3530: $what.=':POST';
3531: # FIXME: Probably ought to escape things....
3532: foreach my $key (keys(%env)) {
3533: if ($key=~/^form\.(.*)/) {
3534: my $formitem = $1;
3535: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3536: $what.=':'.$formitem.'='.$env{$key};
3537: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3538: $what.=':'.$formitem.'='.$env{$key};
3539: }
3540: }
3541: }
3542: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3543: # FIXME: We should not be depending on a form parameter that someone
3544: # editing lonsearchcat.pm might change in the future.
3545: if ($env{'form.phase'} eq 'course_search') {
3546: $what.= ':POST';
3547: # FIXME: Probably ought to escape things....
3548: foreach my $element ('courseexp','crsfulltext','crsrelated',
3549: 'crsdiscuss') {
3550: $what.=':'.$element.'='.$env{'form.'.$element};
3551: }
3552: }
3553: }
3554: &courselog($what);
3555: }
3556:
3557: sub countacc {
3558: my $url=&declutter(shift);
3559: return if (! defined($url) || $url eq '');
3560: unless ($env{'request.course.id'}) { return ''; }
3561: #
3562: # Mark that this url was used in this course
3563: #
3564: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3565: #
3566: # Increase the access count for this resource in this child process
3567: #
3568: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3569: $accesshash{$key}++;
3570: }
3571:
3572: sub linklog {
3573: my ($from,$to)=@_;
3574: $from=&declutter($from);
3575: $to=&declutter($to);
3576: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3577: $accesshash{$to.'___'.$from.'___goto'}=1;
3578: }
3579:
3580: sub statslog {
3581: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3582: if ($users<2) { return; }
3583: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3584: 'course' => $env{'request.course.id'},
3585: 'sections' => '"all"',
3586: 'num_students' => $users,
3587: 'part' => $part,
3588: 'symb' => $symb,
3589: 'mean_tries' => $av_attempts,
3590: 'deg_of_diff' => $degdiff});
3591: foreach my $key (keys(%dynstore)) {
3592: $accesshash{$key}=$dynstore{$key};
3593: }
3594: }
3595:
3596: sub userrolelog {
3597: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3598: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3599: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3600: $userrolehash
3601: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3602: =$tend.':'.$tstart;
3603: }
3604: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3605: $userrolehash
3606: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3607: =$tend.':'.$tstart;
3608: }
3609: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3610: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3611: $domainrolehash
3612: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3613: = $tend.':'.$tstart;
3614: }
3615: }
3616:
3617: sub courserolelog {
3618: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3619: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3620: my $cdom = $1;
3621: my $cnum = $2;
3622: my $sec = $3;
3623: my $namespace = 'rolelog';
3624: my %storehash = (
3625: role => $trole,
3626: start => $tstart,
3627: end => $tend,
3628: selfenroll => $selfenroll,
3629: context => $context,
3630: );
3631: if ($trole eq 'gr') {
3632: $namespace = 'groupslog';
3633: $storehash{'group'} = $sec;
3634: } else {
3635: $storehash{'section'} = $sec;
3636: }
3637: &write_log('course',$namespace,\%storehash,$delflag,$username,
3638: $domain,$cnum,$cdom);
3639: if (($trole ne 'st') || ($sec ne '')) {
3640: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3641: }
3642: }
3643: return;
3644: }
3645:
3646: sub domainrolelog {
3647: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3648: if ($area =~ m{^/($match_domain)/$}) {
3649: my $cdom = $1;
3650: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3651: my $namespace = 'rolelog';
3652: my %storehash = (
3653: role => $trole,
3654: start => $tstart,
3655: end => $tend,
3656: context => $context,
3657: );
3658: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3659: $domain,$domconfiguser,$cdom);
3660: }
3661: return;
3662:
3663: }
3664:
3665: sub coauthorrolelog {
3666: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3667: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3668: my $audom = $1;
3669: my $auname = $2;
3670: my $namespace = 'rolelog';
3671: my %storehash = (
3672: role => $trole,
3673: start => $tstart,
3674: end => $tend,
3675: context => $context,
3676: );
3677: &write_log('author',$namespace,\%storehash,$delflag,$username,
3678: $domain,$auname,$audom);
3679: }
3680: return;
3681: }
3682:
3683: sub get_course_adv_roles {
3684: my ($cid,$codes) = @_;
3685: $cid=$env{'request.course.id'} unless (defined($cid));
3686: my %coursehash=&coursedescription($cid);
3687: my $crstype = &Apache::loncommon::course_type($cid);
3688: my %nothide=();
3689: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3690: if ($user !~ /:/) {
3691: $nothide{join(':',split(/[\@]/,$user))}=1;
3692: } else {
3693: $nothide{$user}=1;
3694: }
3695: }
3696: my %returnhash=();
3697: my %dumphash=
3698: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3699: my $now=time;
3700: my %privileged;
3701: foreach my $entry (keys(%dumphash)) {
3702: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3703: if (($tstart) && ($tstart<0)) { next; }
3704: if (($tend) && ($tend<$now)) { next; }
3705: if (($tstart) && ($now<$tstart)) { next; }
3706: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3707: if ($username eq '' || $domain eq '') { next; }
3708: unless (ref($privileged{$domain}) eq 'HASH') {
3709: my %dompersonnel =
3710: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3711: $privileged{$domain} = {};
3712: foreach my $server (keys(%dompersonnel)) {
3713: if (ref($dompersonnel{$server}) eq 'HASH') {
3714: foreach my $user (keys(%{$dompersonnel{$server}})) {
3715: my ($trole,$uname,$udom) = split(/:/,$user);
3716: $privileged{$udom}{$uname} = 1;
3717: }
3718: }
3719: }
3720: }
3721: if ((exists($privileged{$domain}{$username})) &&
3722: (!$nothide{$username.':'.$domain})) { next; }
3723: if ($role eq 'cr') { next; }
3724: if ($codes) {
3725: if ($section) { $role .= ':'.$section; }
3726: if ($returnhash{$role}) {
3727: $returnhash{$role}.=','.$username.':'.$domain;
3728: } else {
3729: $returnhash{$role}=$username.':'.$domain;
3730: }
3731: } else {
3732: my $key=&plaintext($role,$crstype);
3733: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3734: if ($returnhash{$key}) {
3735: $returnhash{$key}.=','.$username.':'.$domain;
3736: } else {
3737: $returnhash{$key}=$username.':'.$domain;
3738: }
3739: }
3740: }
3741: return %returnhash;
3742: }
3743:
3744: sub get_my_roles {
3745: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3746: unless (defined($uname)) { $uname=$env{'user.name'}; }
3747: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3748: my (%dumphash,%nothide);
3749: if ($context eq 'userroles') {
3750: %dumphash = &dump('roles',$udom,$uname);
3751: } else {
3752: %dumphash=
3753: &dump('nohist_userroles',$udom,$uname);
3754: if ($hidepriv) {
3755: my %coursehash=&coursedescription($udom.'_'.$uname);
3756: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3757: if ($user !~ /:/) {
3758: $nothide{join(':',split(/[\@]/,$user))} = 1;
3759: } else {
3760: $nothide{$user} = 1;
3761: }
3762: }
3763: }
3764: }
3765: my %returnhash=();
3766: my $now=time;
3767: my %privileged;
3768: foreach my $entry (keys(%dumphash)) {
3769: my ($role,$tend,$tstart);
3770: if ($context eq 'userroles') {
3771: next if ($entry =~ /^rolesdef/);
3772: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3773: } else {
3774: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3775: }
3776: if (($tstart) && ($tstart<0)) { next; }
3777: my $status = 'active';
3778: if (($tend) && ($tend<=$now)) {
3779: $status = 'previous';
3780: }
3781: if (($tstart) && ($now<$tstart)) {
3782: $status = 'future';
3783: }
3784: if (ref($types) eq 'ARRAY') {
3785: if (!grep(/^\Q$status\E$/,@{$types})) {
3786: next;
3787: }
3788: } else {
3789: if ($status ne 'active') {
3790: next;
3791: }
3792: }
3793: my ($rolecode,$username,$domain,$section,$area);
3794: if ($context eq 'userroles') {
3795: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
3796: (undef,$domain,$username,$section) = split(/\//,$area);
3797: } else {
3798: ($role,$username,$domain,$section) = split(/\:/,$entry);
3799: }
3800: if (ref($roledoms) eq 'ARRAY') {
3801: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3802: next;
3803: }
3804: }
3805: if (ref($roles) eq 'ARRAY') {
3806: if (!grep(/^\Q$role\E$/,@{$roles})) {
3807: if ($role =~ /^cr\//) {
3808: if (!grep(/^cr$/,@{$roles})) {
3809: next;
3810: }
3811: } elsif ($role =~ /^gr\//) {
3812: if (!grep(/^gr$/,@{$roles})) {
3813: next;
3814: }
3815: } else {
3816: next;
3817: }
3818: }
3819: }
3820: if ($hidepriv) {
3821: if ($context eq 'userroles') {
3822: if ((&privileged($username,$domain)) &&
3823: (!$nothide{$username.':'.$domain})) {
3824: next;
3825: }
3826: } else {
3827: unless (ref($privileged{$domain}) eq 'HASH') {
3828: my %dompersonnel =
3829: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3830: $privileged{$domain} = {};
3831: if (keys(%dompersonnel)) {
3832: foreach my $server (keys(%dompersonnel)) {
3833: if (ref($dompersonnel{$server}) eq 'HASH') {
3834: foreach my $user (keys(%{$dompersonnel{$server}})) {
3835: my ($trole,$uname,$udom) = split(/:/,$user);
3836: $privileged{$udom}{$uname} = $trole;
3837: }
3838: }
3839: }
3840: }
3841: }
3842: if (exists($privileged{$domain}{$username})) {
3843: if (!$nothide{$username.':'.$domain}) {
3844: next;
3845: }
3846: }
3847: }
3848: }
3849: if ($withsec) {
3850: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3851: $tstart.':'.$tend;
3852: } else {
3853: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3854: }
3855: }
3856: return %returnhash;
3857: }
3858:
3859: # ----------------------------------------------------- Frontpage Announcements
3860: #
3861: #
3862:
3863: sub postannounce {
3864: my ($server,$text)=@_;
3865: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3866: unless ($text=~/\w/) { $text=''; }
3867: return &reply('setannounce:'.&escape($text),$server);
3868: }
3869:
3870: sub getannounce {
3871:
3872: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3873: my $announcement='';
3874: while (my $line = <$fh>) { $announcement .= $line; }
3875: close($fh);
3876: if ($announcement=~/\w/) {
3877: return
3878: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3879: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3880: } else {
3881: return '';
3882: }
3883: } else {
3884: return '';
3885: }
3886: }
3887:
3888: # ---------------------------------------------------------- Course ID routines
3889: # Deal with domain's nohist_courseid.db files
3890: #
3891:
3892: sub courseidput {
3893: my ($domain,$storehash,$coursehome,$caller) = @_;
3894: return unless (ref($storehash) eq 'HASH');
3895: my $outcome;
3896: if ($caller eq 'timeonly') {
3897: my $cids = '';
3898: foreach my $item (keys(%$storehash)) {
3899: $cids.=&escape($item).'&';
3900: }
3901: $cids=~s/\&$//;
3902: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3903: $coursehome);
3904: } else {
3905: my $items = '';
3906: foreach my $item (keys(%$storehash)) {
3907: $items.= &escape($item).'='.
3908: &freeze_escape($$storehash{$item}).'&';
3909: }
3910: $items=~s/\&$//;
3911: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3912: $coursehome);
3913: }
3914: if ($outcome eq 'unknown_cmd') {
3915: my $what;
3916: foreach my $cid (keys(%$storehash)) {
3917: $what .= &escape($cid).'=';
3918: foreach my $item ('description','inst_code','owner','type') {
3919: $what .= &escape($storehash->{$cid}{$item}).':';
3920: }
3921: $what =~ s/\:$/&/;
3922: }
3923: $what =~ s/\&$//;
3924: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3925: } else {
3926: return $outcome;
3927: }
3928: }
3929:
3930: sub courseiddump {
3931: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3932: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3933: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3934: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3935: my $as_hash = 1;
3936: my %returnhash;
3937: if (!$domfilter) { $domfilter=''; }
3938: my %libserv = &all_library();
3939: foreach my $tryserver (keys(%libserv)) {
3940: if ( ( $hostidflag == 1
3941: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3942: || (!defined($hostidflag)) ) {
3943:
3944: if (($domfilter eq '') ||
3945: (&host_domain($tryserver) eq $domfilter)) {
3946: my $rep;
3947: if (grep { $_ eq $tryserver } current_machine_ids()) {
3948: $rep = LONCAPA::Lond::dump_course_id_handler(
3949: join(":", (&host_domain($tryserver), $sincefilter,
3950: &escape($descfilter), &escape($instcodefilter),
3951: &escape($ownerfilter), &escape($coursefilter),
3952: &escape($typefilter), &escape($regexp_ok),
3953: $as_hash, &escape($selfenrollonly),
3954: &escape($catfilter), $showhidden, $caller,
3955: &escape($cloner), &escape($cc_clone), $cloneonly,
3956: &escape($createdbefore), &escape($createdafter),
3957: &escape($creationcontext), $domcloner)));
3958: } else {
3959: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
3960: $sincefilter.':'.&escape($descfilter).':'.
3961: &escape($instcodefilter).':'.&escape($ownerfilter).
3962: ':'.&escape($coursefilter).':'.&escape($typefilter).
3963: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3964: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3965: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3966: &escape($cc_clone).':'.$cloneonly.':'.
3967: &escape($createdbefore).':'.&escape($createdafter).':'.
3968: &escape($creationcontext).':'.$domcloner,
3969: $tryserver);
3970: }
3971:
3972: my @pairs=split(/\&/,$rep);
3973: foreach my $item (@pairs) {
3974: my ($key,$value)=split(/\=/,$item,2);
3975: $key = &unescape($key);
3976: next if ($key =~ /^error: 2 /);
3977: my $result = &thaw_unescape($value);
3978: if (ref($result) eq 'HASH') {
3979: $returnhash{$key}=$result;
3980: } else {
3981: my @responses = split(/:/,$value);
3982: my @items = ('description','inst_code','owner','type');
3983: for (my $i=0; $i<@responses; $i++) {
3984: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3985: }
3986: }
3987: }
3988: }
3989: }
3990: }
3991: return %returnhash;
3992: }
3993:
3994: sub courselastaccess {
3995: my ($cdom,$cnum,$hostidref) = @_;
3996: my %returnhash;
3997: if ($cdom && $cnum) {
3998: my $chome = &homeserver($cnum,$cdom);
3999: if ($chome ne 'no_host') {
4000: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4001: &extract_lastaccess(\%returnhash,$rep);
4002: }
4003: } else {
4004: if (!$cdom) { $cdom=''; }
4005: my %libserv = &all_library();
4006: foreach my $tryserver (keys(%libserv)) {
4007: if (ref($hostidref) eq 'ARRAY') {
4008: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4009: }
4010: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4011: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4012: &extract_lastaccess(\%returnhash,$rep);
4013: }
4014: }
4015: }
4016: return %returnhash;
4017: }
4018:
4019: sub extract_lastaccess {
4020: my ($returnhash,$rep) = @_;
4021: if (ref($returnhash) eq 'HASH') {
4022: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4023: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4024: $rep eq '') {
4025: my @pairs=split(/\&/,$rep);
4026: foreach my $item (@pairs) {
4027: my ($key,$value)=split(/\=/,$item,2);
4028: $key = &unescape($key);
4029: next if ($key =~ /^error: 2 /);
4030: $returnhash->{$key} = &thaw_unescape($value);
4031: }
4032: }
4033: }
4034: return;
4035: }
4036:
4037: # ---------------------------------------------------------- DC e-mail
4038:
4039: sub dcmailput {
4040: my ($domain,$msgid,$message,$server)=@_;
4041: my $status = &Apache::lonnet::critical(
4042: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4043: &escape($message),$server);
4044: return $status;
4045: }
4046:
4047: sub dcmaildump {
4048: my ($dom,$startdate,$enddate,$senders) = @_;
4049: my %returnhash=();
4050:
4051: if (defined(&domain($dom,'primary'))) {
4052: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4053: &escape($enddate).':';
4054: my @esc_senders=map { &escape($_)} @$senders;
4055: $cmd.=&escape(join('&',@esc_senders));
4056: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4057: my ($key,$value) = split(/\=/,$line,2);
4058: if (($key) && ($value)) {
4059: $returnhash{&unescape($key)} = &unescape($value);
4060: }
4061: }
4062: }
4063: return %returnhash;
4064: }
4065: # ---------------------------------------------------------- Domain roles
4066:
4067: sub get_domain_roles {
4068: my ($dom,$roles,$startdate,$enddate)=@_;
4069: if ((!defined($startdate)) || ($startdate eq '')) {
4070: $startdate = '.';
4071: }
4072: if ((!defined($enddate)) || ($enddate eq '')) {
4073: $enddate = '.';
4074: }
4075: my $rolelist;
4076: if (ref($roles) eq 'ARRAY') {
4077: $rolelist = join(':',@{$roles});
4078: }
4079: my %personnel = ();
4080:
4081: my %servers = &get_servers($dom,'library');
4082: foreach my $tryserver (keys(%servers)) {
4083: %{$personnel{$tryserver}}=();
4084: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4085: &escape($startdate).':'.
4086: &escape($enddate).':'.
4087: &escape($rolelist), $tryserver))) {
4088: my ($key,$value) = split(/\=/,$line,2);
4089: if (($key) && ($value)) {
4090: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4091: }
4092: }
4093: }
4094: return %personnel;
4095: }
4096:
4097: # ----------------------------------------------------------- Interval timing
4098:
4099: {
4100: # Caches needed for speedup of navmaps
4101: # We don't want to cache this for very long at all (5 seconds at most)
4102: #
4103: # The user for whom we cache
4104: my $cachedkey='';
4105: # The cached times for this user
4106: my %cachedtimes=();
4107: # When this was last done
4108: my $cachedtime=();
4109:
4110: sub load_all_first_access {
4111: my ($uname,$udom)=@_;
4112: if (($cachedkey eq $uname.':'.$udom) &&
4113: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4114: return;
4115: }
4116: $cachedtime=time;
4117: $cachedkey=$uname.':'.$udom;
4118: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4119: }
4120:
4121: sub get_first_access {
4122: my ($type,$argsymb,$argmap)=@_;
4123: my ($symb,$courseid,$udom,$uname)=&whichuser();
4124: if ($argsymb) { $symb=$argsymb; }
4125: my ($map,$id,$res)=&decode_symb($symb);
4126: if ($argmap) { $map = $argmap; }
4127: if ($type eq 'course') {
4128: $res='course';
4129: } elsif ($type eq 'map') {
4130: $res=&symbread($map);
4131: } else {
4132: $res=$symb;
4133: }
4134: &load_all_first_access($uname,$udom);
4135: return $cachedtimes{"$courseid\0$res"};
4136: }
4137:
4138: sub set_first_access {
4139: my ($type,$interval)=@_;
4140: my ($symb,$courseid,$udom,$uname)=&whichuser();
4141: my ($map,$id,$res)=&decode_symb($symb);
4142: if ($type eq 'course') {
4143: $res='course';
4144: } elsif ($type eq 'map') {
4145: $res=&symbread($map);
4146: } else {
4147: $res=$symb;
4148: }
4149: $cachedkey='';
4150: my $firstaccess=&get_first_access($type,$symb,$map);
4151: if (!$firstaccess) {
4152: my $start = time;
4153: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4154: $udom,$uname);
4155: if ($putres eq 'ok') {
4156: &put('timerinterval',{"$courseid\0$res"=>$interval},
4157: $udom,$uname);
4158: &appenv(
4159: {
4160: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4161: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4162: }
4163: );
4164: }
4165: return $putres;
4166: }
4167: return 'already_set';
4168: }
4169: }
4170: # --------------------------------------------- Set Expire Date for Spreadsheet
4171:
4172: sub expirespread {
4173: my ($uname,$udom,$stype,$usymb)=@_;
4174: my $cid=$env{'request.course.id'};
4175: if ($cid) {
4176: my $now=time;
4177: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4178: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4179: $env{'course.'.$cid.'.num'}.
4180: ':nohist_expirationdates:'.
4181: &escape($key).'='.$now,
4182: $env{'course.'.$cid.'.home'})
4183: }
4184: return 'ok';
4185: }
4186:
4187: # ----------------------------------------------------- Devalidate Spreadsheets
4188:
4189: sub devalidate {
4190: my ($symb,$uname,$udom)=@_;
4191: my $cid=$env{'request.course.id'};
4192: if ($cid) {
4193: # delete the stored spreadsheets for
4194: # - the student level sheet of this user in course's homespace
4195: # - the assessment level sheet for this resource
4196: # for this user in user's homespace
4197: # - current conditional state info
4198: my $key=$uname.':'.$udom.':';
4199: my $status=
4200: &del('nohist_calculatedsheets',
4201: [$key.'studentcalc:'],
4202: $env{'course.'.$cid.'.domain'},
4203: $env{'course.'.$cid.'.num'})
4204: .' '.
4205: &del('nohist_calculatedsheets_'.$cid,
4206: [$key.'assesscalc:'.$symb],$udom,$uname);
4207: unless ($status eq 'ok ok') {
4208: &logthis('Could not devalidate spreadsheet '.
4209: $uname.' at '.$udom.' for '.
4210: $symb.': '.$status);
4211: }
4212: &delenv('user.state.'.$cid);
4213: }
4214: }
4215:
4216: sub get_scalar {
4217: my ($string,$end) = @_;
4218: my $value;
4219: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4220: $value = $1;
4221: } elsif ($$string =~ s/^([^&]*?)&//) {
4222: $value = $1;
4223: }
4224: return &unescape($value);
4225: }
4226:
4227: sub array2str {
4228: my (@array) = @_;
4229: my $result=&arrayref2str(\@array);
4230: $result=~s/^__ARRAY_REF__//;
4231: $result=~s/__END_ARRAY_REF__$//;
4232: return $result;
4233: }
4234:
4235: sub arrayref2str {
4236: my ($arrayref) = @_;
4237: my $result='__ARRAY_REF__';
4238: foreach my $elem (@$arrayref) {
4239: if(ref($elem) eq 'ARRAY') {
4240: $result.=&arrayref2str($elem).'&';
4241: } elsif(ref($elem) eq 'HASH') {
4242: $result.=&hashref2str($elem).'&';
4243: } elsif(ref($elem)) {
4244: #print("Got a ref of ".(ref($elem))." skipping.");
4245: } else {
4246: $result.=&escape($elem).'&';
4247: }
4248: }
4249: $result=~s/\&$//;
4250: $result .= '__END_ARRAY_REF__';
4251: return $result;
4252: }
4253:
4254: sub hash2str {
4255: my (%hash) = @_;
4256: my $result=&hashref2str(\%hash);
4257: $result=~s/^__HASH_REF__//;
4258: $result=~s/__END_HASH_REF__$//;
4259: return $result;
4260: }
4261:
4262: sub hashref2str {
4263: my ($hashref)=@_;
4264: my $result='__HASH_REF__';
4265: foreach my $key (sort(keys(%$hashref))) {
4266: if (ref($key) eq 'ARRAY') {
4267: $result.=&arrayref2str($key).'=';
4268: } elsif (ref($key) eq 'HASH') {
4269: $result.=&hashref2str($key).'=';
4270: } elsif (ref($key)) {
4271: $result.='=';
4272: #print("Got a ref of ".(ref($key))." skipping.");
4273: } else {
4274: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4275: }
4276:
4277: if(ref($hashref->{$key}) eq 'ARRAY') {
4278: $result.=&arrayref2str($hashref->{$key}).'&';
4279: } elsif(ref($hashref->{$key}) eq 'HASH') {
4280: $result.=&hashref2str($hashref->{$key}).'&';
4281: } elsif(ref($hashref->{$key})) {
4282: $result.='&';
4283: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4284: } else {
4285: $result.=&escape($hashref->{$key}).'&';
4286: }
4287: }
4288: $result=~s/\&$//;
4289: $result .= '__END_HASH_REF__';
4290: return $result;
4291: }
4292:
4293: sub str2hash {
4294: my ($string)=@_;
4295: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4296: return %$hash;
4297: }
4298:
4299: sub str2hashref {
4300: my ($string) = @_;
4301:
4302: my %hash;
4303:
4304: if($string !~ /^__HASH_REF__/) {
4305: if (! ($string eq '' || !defined($string))) {
4306: $hash{'error'}='Not hash reference';
4307: }
4308: return (\%hash, $string);
4309: }
4310:
4311: $string =~ s/^__HASH_REF__//;
4312:
4313: while($string !~ /^__END_HASH_REF__/) {
4314: #key
4315: my $key='';
4316: if($string =~ /^__HASH_REF__/) {
4317: ($key, $string)=&str2hashref($string);
4318: if(defined($key->{'error'})) {
4319: $hash{'error'}='Bad data';
4320: return (\%hash, $string);
4321: }
4322: } elsif($string =~ /^__ARRAY_REF__/) {
4323: ($key, $string)=&str2arrayref($string);
4324: if($key->[0] eq 'Array reference error') {
4325: $hash{'error'}='Bad data';
4326: return (\%hash, $string);
4327: }
4328: } else {
4329: $string =~ s/^(.*?)=//;
4330: $key=&unescape($1);
4331: }
4332: $string =~ s/^=//;
4333:
4334: #value
4335: my $value='';
4336: if($string =~ /^__HASH_REF__/) {
4337: ($value, $string)=&str2hashref($string);
4338: if(defined($value->{'error'})) {
4339: $hash{'error'}='Bad data';
4340: return (\%hash, $string);
4341: }
4342: } elsif($string =~ /^__ARRAY_REF__/) {
4343: ($value, $string)=&str2arrayref($string);
4344: if($value->[0] eq 'Array reference error') {
4345: $hash{'error'}='Bad data';
4346: return (\%hash, $string);
4347: }
4348: } else {
4349: $value=&get_scalar(\$string,'__END_HASH_REF__');
4350: }
4351: $string =~ s/^&//;
4352:
4353: $hash{$key}=$value;
4354: }
4355:
4356: $string =~ s/^__END_HASH_REF__//;
4357:
4358: return (\%hash, $string);
4359: }
4360:
4361: sub str2array {
4362: my ($string)=@_;
4363: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4364: return @$array;
4365: }
4366:
4367: sub str2arrayref {
4368: my ($string) = @_;
4369: my @array;
4370:
4371: if($string !~ /^__ARRAY_REF__/) {
4372: if (! ($string eq '' || !defined($string))) {
4373: $array[0]='Array reference error';
4374: }
4375: return (\@array, $string);
4376: }
4377:
4378: $string =~ s/^__ARRAY_REF__//;
4379:
4380: while($string !~ /^__END_ARRAY_REF__/) {
4381: my $value='';
4382: if($string =~ /^__HASH_REF__/) {
4383: ($value, $string)=&str2hashref($string);
4384: if(defined($value->{'error'})) {
4385: $array[0] ='Array reference error';
4386: return (\@array, $string);
4387: }
4388: } elsif($string =~ /^__ARRAY_REF__/) {
4389: ($value, $string)=&str2arrayref($string);
4390: if($value->[0] eq 'Array reference error') {
4391: $array[0] ='Array reference error';
4392: return (\@array, $string);
4393: }
4394: } else {
4395: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4396: }
4397: $string =~ s/^&//;
4398:
4399: push(@array, $value);
4400: }
4401:
4402: $string =~ s/^__END_ARRAY_REF__//;
4403:
4404: return (\@array, $string);
4405: }
4406:
4407: # -------------------------------------------------------------------Temp Store
4408:
4409: sub tmpreset {
4410: my ($symb,$namespace,$domain,$stuname) = @_;
4411: if (!$symb) {
4412: $symb=&symbread();
4413: if (!$symb) { $symb= $env{'request.url'}; }
4414: }
4415: $symb=escape($symb);
4416:
4417: if (!$namespace) { $namespace=$env{'request.state'}; }
4418: $namespace=~s/\//\_/g;
4419: $namespace=~s/\W//g;
4420:
4421: if (!$domain) { $domain=$env{'user.domain'}; }
4422: if (!$stuname) { $stuname=$env{'user.name'}; }
4423: if ($domain eq 'public' && $stuname eq 'public') {
4424: $stuname=$ENV{'REMOTE_ADDR'};
4425: }
4426: my $path=LONCAPA::tempdir();
4427: my %hash;
4428: if (tie(%hash,'GDBM_File',
4429: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4430: &GDBM_WRCREAT(),0640)) {
4431: foreach my $key (keys(%hash)) {
4432: if ($key=~ /:$symb/) {
4433: delete($hash{$key});
4434: }
4435: }
4436: }
4437: }
4438:
4439: sub tmpstore {
4440: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4441:
4442: if (!$symb) {
4443: $symb=&symbread();
4444: if (!$symb) { $symb= $env{'request.url'}; }
4445: }
4446: $symb=escape($symb);
4447:
4448: if (!$namespace) {
4449: # I don't think we would ever want to store this for a course.
4450: # it seems this will only be used if we don't have a course.
4451: #$namespace=$env{'request.course.id'};
4452: #if (!$namespace) {
4453: $namespace=$env{'request.state'};
4454: #}
4455: }
4456: $namespace=~s/\//\_/g;
4457: $namespace=~s/\W//g;
4458: if (!$domain) { $domain=$env{'user.domain'}; }
4459: if (!$stuname) { $stuname=$env{'user.name'}; }
4460: if ($domain eq 'public' && $stuname eq 'public') {
4461: $stuname=$ENV{'REMOTE_ADDR'};
4462: }
4463: my $now=time;
4464: my %hash;
4465: my $path=LONCAPA::tempdir();
4466: if (tie(%hash,'GDBM_File',
4467: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4468: &GDBM_WRCREAT(),0640)) {
4469: $hash{"version:$symb"}++;
4470: my $version=$hash{"version:$symb"};
4471: my $allkeys='';
4472: foreach my $key (keys(%$storehash)) {
4473: $allkeys.=$key.':';
4474: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4475: }
4476: $hash{"$version:$symb:timestamp"}=$now;
4477: $allkeys.='timestamp';
4478: $hash{"$version:keys:$symb"}=$allkeys;
4479: if (untie(%hash)) {
4480: return 'ok';
4481: } else {
4482: return "error:$!";
4483: }
4484: } else {
4485: return "error:$!";
4486: }
4487: }
4488:
4489: # -----------------------------------------------------------------Temp Restore
4490:
4491: sub tmprestore {
4492: my ($symb,$namespace,$domain,$stuname) = @_;
4493:
4494: if (!$symb) {
4495: $symb=&symbread();
4496: if (!$symb) { $symb= $env{'request.url'}; }
4497: }
4498: $symb=escape($symb);
4499:
4500: if (!$namespace) { $namespace=$env{'request.state'}; }
4501:
4502: if (!$domain) { $domain=$env{'user.domain'}; }
4503: if (!$stuname) { $stuname=$env{'user.name'}; }
4504: if ($domain eq 'public' && $stuname eq 'public') {
4505: $stuname=$ENV{'REMOTE_ADDR'};
4506: }
4507: my %returnhash;
4508: $namespace=~s/\//\_/g;
4509: $namespace=~s/\W//g;
4510: my %hash;
4511: my $path=LONCAPA::tempdir();
4512: if (tie(%hash,'GDBM_File',
4513: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4514: &GDBM_READER(),0640)) {
4515: my $version=$hash{"version:$symb"};
4516: $returnhash{'version'}=$version;
4517: my $scope;
4518: for ($scope=1;$scope<=$version;$scope++) {
4519: my $vkeys=$hash{"$scope:keys:$symb"};
4520: my @keys=split(/:/,$vkeys);
4521: my $key;
4522: $returnhash{"$scope:keys"}=$vkeys;
4523: foreach $key (@keys) {
4524: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4525: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4526: }
4527: }
4528: if (!(untie(%hash))) {
4529: return "error:$!";
4530: }
4531: } else {
4532: return "error:$!";
4533: }
4534: return %returnhash;
4535: }
4536:
4537: # ----------------------------------------------------------------------- Store
4538:
4539: sub store {
4540: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4541: my $home='';
4542:
4543: if ($stuname) { $home=&homeserver($stuname,$domain); }
4544:
4545: $symb=&symbclean($symb);
4546: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4547:
4548: if (!$domain) { $domain=$env{'user.domain'}; }
4549: if (!$stuname) { $stuname=$env{'user.name'}; }
4550:
4551: &devalidate($symb,$stuname,$domain);
4552:
4553: $symb=escape($symb);
4554: if (!$namespace) {
4555: unless ($namespace=$env{'request.course.id'}) {
4556: return '';
4557: }
4558: }
4559: if (!$home) { $home=$env{'user.home'}; }
4560:
4561: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4562: $$storehash{'host'}=$perlvar{'lonHostID'};
4563:
4564: my $namevalue='';
4565: foreach my $key (keys(%$storehash)) {
4566: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4567: }
4568: $namevalue=~s/\&$//;
4569: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4570: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4571: }
4572:
4573: # -------------------------------------------------------------- Critical Store
4574:
4575: sub cstore {
4576: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4577: my $home='';
4578:
4579: if ($stuname) { $home=&homeserver($stuname,$domain); }
4580:
4581: $symb=&symbclean($symb);
4582: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4583:
4584: if (!$domain) { $domain=$env{'user.domain'}; }
4585: if (!$stuname) { $stuname=$env{'user.name'}; }
4586:
4587: &devalidate($symb,$stuname,$domain);
4588:
4589: $symb=escape($symb);
4590: if (!$namespace) {
4591: unless ($namespace=$env{'request.course.id'}) {
4592: return '';
4593: }
4594: }
4595: if (!$home) { $home=$env{'user.home'}; }
4596:
4597: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4598: $$storehash{'host'}=$perlvar{'lonHostID'};
4599:
4600: my $namevalue='';
4601: foreach my $key (keys(%$storehash)) {
4602: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4603: }
4604: $namevalue=~s/\&$//;
4605: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4606: return critical
4607: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4608: }
4609:
4610: # --------------------------------------------------------------------- Restore
4611:
4612: sub restore {
4613: my ($symb,$namespace,$domain,$stuname) = @_;
4614: my $home='';
4615:
4616: if ($stuname) { $home=&homeserver($stuname,$domain); }
4617:
4618: if (!$symb) {
4619: unless ($symb=escape(&symbread())) { return ''; }
4620: } else {
4621: $symb=&escape(&symbclean($symb));
4622: }
4623: if (!$namespace) {
4624: unless ($namespace=$env{'request.course.id'}) {
4625: return '';
4626: }
4627: }
4628: if (!$domain) { $domain=$env{'user.domain'}; }
4629: if (!$stuname) { $stuname=$env{'user.name'}; }
4630: if (!$home) { $home=$env{'user.home'}; }
4631: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4632:
4633: my %returnhash=();
4634: foreach my $line (split(/\&/,$answer)) {
4635: my ($name,$value)=split(/\=/,$line);
4636: $returnhash{&unescape($name)}=&thaw_unescape($value);
4637: }
4638: my $version;
4639: for ($version=1;$version<=$returnhash{'version'};$version++) {
4640: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4641: $returnhash{$item}=$returnhash{$version.':'.$item};
4642: }
4643: }
4644: return %returnhash;
4645: }
4646:
4647: # ---------------------------------------------------------- Course Description
4648: #
4649: #
4650:
4651: sub coursedescription {
4652: my ($courseid,$args)=@_;
4653: $courseid=~s/^\///;
4654: $courseid=~s/\_/\//g;
4655: my ($cdomain,$cnum)=split(/\//,$courseid);
4656: my $chome=&homeserver($cnum,$cdomain);
4657: my $normalid=$cdomain.'_'.$cnum;
4658: # need to always cache even if we get errors otherwise we keep
4659: # trying and trying and trying to get the course description.
4660: my %envhash=();
4661: my %returnhash=();
4662:
4663: my $expiretime=600;
4664: if ($env{'request.course.id'} eq $normalid) {
4665: $expiretime=120;
4666: }
4667:
4668: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4669: if (!$args->{'freshen_cache'}
4670: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4671: foreach my $key (keys(%env)) {
4672: next if ($key !~ /^\Q$prefix\E(.*)/);
4673: my ($setting) = $1;
4674: $returnhash{$setting} = $env{$key};
4675: }
4676: return %returnhash;
4677: }
4678:
4679: # get the data again
4680:
4681: if (!$args->{'one_time'}) {
4682: $envhash{'course.'.$normalid.'.last_cache'}=time;
4683: }
4684:
4685: if ($chome ne 'no_host') {
4686: %returnhash=&dump('environment',$cdomain,$cnum);
4687: if (!exists($returnhash{'con_lost'})) {
4688: my $username = $env{'user.name'}; # Defult username
4689: if(defined $args->{'user'}) {
4690: $username = $args->{'user'};
4691: }
4692: $returnhash{'home'}= $chome;
4693: $returnhash{'domain'} = $cdomain;
4694: $returnhash{'num'} = $cnum;
4695: if (!defined($returnhash{'type'})) {
4696: $returnhash{'type'} = 'Course';
4697: }
4698: while (my ($name,$value) = each %returnhash) {
4699: $envhash{'course.'.$normalid.'.'.$name}=$value;
4700: }
4701: $returnhash{'url'}=&clutter($returnhash{'url'});
4702: $returnhash{'fn'}=LONCAPA::tempdir() .
4703: $username.'_'.$cdomain.'_'.$cnum;
4704: $envhash{'course.'.$normalid.'.home'}=$chome;
4705: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4706: $envhash{'course.'.$normalid.'.num'}=$cnum;
4707: }
4708: }
4709: if (!$args->{'one_time'}) {
4710: &appenv(\%envhash);
4711: }
4712: return %returnhash;
4713: }
4714:
4715: sub update_released_required {
4716: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4717: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4718: $cid = $env{'request.course.id'};
4719: $cdom = $env{'course.'.$cid.'.domain'};
4720: $cnum = $env{'course.'.$cid.'.num'};
4721: $chome = $env{'course.'.$cid.'.home'};
4722: }
4723: if ($needsrelease) {
4724: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4725: my $needsupdate;
4726: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4727: $needsupdate = 1;
4728: } else {
4729: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4730: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4731: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4732: $needsupdate = 1;
4733: }
4734: }
4735: if ($needsupdate) {
4736: my %needshash = (
4737: 'internal.releaserequired' => $needsrelease,
4738: );
4739: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4740: if ($putresult eq 'ok') {
4741: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4742: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4743: if (ref($crsinfo{$cid}) eq 'HASH') {
4744: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4745: &courseidput($cdom,\%crsinfo,$chome,'notime');
4746: }
4747: }
4748: }
4749: }
4750: return;
4751: }
4752:
4753: # -------------------------------------------------See if a user is privileged
4754:
4755: sub privileged {
4756: my ($username,$domain)=@_;
4757:
4758: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4759: my $now = time;
4760:
4761: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4762: my ($trole, $tend, $tstart) = split(/_/, $role);
4763: if (($trole eq 'dc') || ($trole eq 'su')) {
4764: return 1 unless ($tend && $tend < $now)
4765: or ($tstart && $tstart > $now);
4766: }
4767: }
4768:
4769: return 0;
4770: }
4771:
4772: # -------------------------------------------------------- Get user privileges
4773:
4774: sub rolesinit {
4775: my ($domain, $username) = @_;
4776: my %userroles = ('user.login.time' => time);
4777: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4778:
4779: # firstaccess and timerinterval are related to timed maps/resources.
4780: # also, blocking can be triggered by an activating timer
4781: # it's saved in the user's %env.
4782: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4783: my %timerinterval = &dump('timerinterval', $domain, $username);
4784: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4785: %timerintchk, %timerintenv);
4786:
4787: foreach my $key (keys(%firstaccess)) {
4788: my ($cid, $rest) = split(/\0/, $key);
4789: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4790: }
4791:
4792: foreach my $key (keys(%timerinterval)) {
4793: my ($cid,$rest) = split(/\0/,$key);
4794: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4795: }
4796:
4797: my %allroles=();
4798: my %allgroups=();
4799:
4800: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4801: my $role = $rolesdump{$area};
4802: $area =~ s/\_\w\w$//;
4803:
4804: my ($trole, $tend, $tstart, $group_privs);
4805:
4806: if ($role =~ /^cr/) {
4807: # Custom role, defined by a user
4808: # e.g., user.role.cr/msu/smith/mynewrole
4809: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4810: $trole = $1;
4811: ($tend, $tstart) = split('_', $2);
4812: } else {
4813: $trole = $role;
4814: }
4815: } elsif ($role =~ m|^gr/|) {
4816: # Role of member in a group, defined within a course/community
4817: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
4818: ($trole, $tend, $tstart) = split(/_/, $role);
4819: next if $tstart eq '-1';
4820: ($trole, $group_privs) = split(/\//, $trole);
4821: $group_privs = &unescape($group_privs);
4822: } else {
4823: # Just a normal role, defined in roles.tab
4824: ($trole, $tend, $tstart) = split(/_/,$role);
4825: }
4826:
4827: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4828: $username);
4829: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4830:
4831: # role expired or not available yet?
4832: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
4833: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
4834:
4835: next if $area eq '' or $trole eq '';
4836:
4837: my $spec = "$trole.$area";
4838: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
4839:
4840: if ($trole =~ /^cr\//) {
4841: # Custom role, defined by a user
4842: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4843: } elsif ($trole eq 'gr') {
4844: # Role of a member in a group, defined within a course/community
4845: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4846: next;
4847: } else {
4848: # Normal role, defined in roles.tab
4849: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4850: }
4851:
4852: my $cid = $tdomain.'_'.$trest;
4853: unless ($firstaccchk{$cid}) {
4854: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4855: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4856: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4857: $coursetimerstarts{$cid}{$item};
4858: }
4859: }
4860: $firstaccchk{$cid} = 1;
4861: }
4862: unless ($timerintchk{$cid}) {
4863: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
4864: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
4865: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
4866: $coursetimerintervals{$cid}{$item};
4867: }
4868: }
4869: $timerintchk{$cid} = 1;
4870: }
4871: }
4872:
4873: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
4874: \%allroles, \%allgroups);
4875: $env{'user.adv'} = $userroles{'user.adv'};
4876:
4877: return (\%userroles,\%firstaccenv,\%timerintenv);
4878: }
4879:
4880: sub set_arearole {
4881: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4882: # log the associated role with the area
4883: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4884: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4885: }
4886:
4887: sub custom_roleprivs {
4888: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4889: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4890: my $homsvr=homeserver($rauthor,$rdomain);
4891: if (&hostname($homsvr) ne '') {
4892: my ($rdummy,$roledef)=
4893: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4894: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4895: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4896: if (defined($syspriv)) {
4897: if ($trest =~ /^$match_community$/) {
4898: $syspriv =~ s/bre\&S//;
4899: }
4900: $$allroles{'cm./'}.=':'.$syspriv;
4901: $$allroles{$spec.'./'}.=':'.$syspriv;
4902: }
4903: if ($tdomain ne '') {
4904: if (defined($dompriv)) {
4905: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4906: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4907: }
4908: if (($trest ne '') && (defined($coursepriv))) {
4909: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4910: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4911: }
4912: }
4913: }
4914: }
4915: }
4916:
4917: sub group_roleprivs {
4918: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4919: my $access = 1;
4920: my $now = time;
4921: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4922: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4923: if ($access) {
4924: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4925: $$allgroups{$course}{$group} .=':'.$group_privs;
4926: }
4927: }
4928:
4929: sub standard_roleprivs {
4930: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4931: if (defined($pr{$trole.':s'})) {
4932: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4933: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4934: }
4935: if ($tdomain ne '') {
4936: if (defined($pr{$trole.':d'})) {
4937: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4938: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4939: }
4940: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4941: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4942: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4943: }
4944: }
4945: }
4946:
4947: sub set_userprivs {
4948: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4949: my $author=0;
4950: my $adv=0;
4951: my %grouproles = ();
4952: if (keys(%{$allgroups}) > 0) {
4953: my @groupkeys;
4954: foreach my $role (keys(%{$allroles})) {
4955: push(@groupkeys,$role);
4956: }
4957: if (ref($groups_roles) eq 'HASH') {
4958: foreach my $key (keys(%{$groups_roles})) {
4959: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4960: push(@groupkeys,$key);
4961: }
4962: }
4963: }
4964: if (@groupkeys > 0) {
4965: foreach my $role (@groupkeys) {
4966: my ($trole,$area,$sec,$extendedarea);
4967: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4968: $trole = $1;
4969: $area = $2;
4970: $sec = $3;
4971: $extendedarea = $area.$sec;
4972: if (exists($$allgroups{$area})) {
4973: foreach my $group (keys(%{$$allgroups{$area}})) {
4974: my $spec = $trole.'.'.$extendedarea;
4975: $grouproles{$spec.'.'.$area.'/'.$group} =
4976: $$allgroups{$area}{$group};
4977: }
4978: }
4979: }
4980: }
4981: }
4982: }
4983: foreach my $group (keys(%grouproles)) {
4984: $$allroles{$group} = $grouproles{$group};
4985: }
4986: foreach my $role (keys(%{$allroles})) {
4987: my %thesepriv;
4988: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4989: foreach my $item (split(/:/,$$allroles{$role})) {
4990: if ($item ne '') {
4991: my ($privilege,$restrictions)=split(/&/,$item);
4992: if ($restrictions eq '') {
4993: $thesepriv{$privilege}='F';
4994: } elsif ($thesepriv{$privilege} ne 'F') {
4995: $thesepriv{$privilege}.=$restrictions;
4996: }
4997: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4998: }
4999: }
5000: my $thesestr='';
5001: foreach my $priv (sort(keys(%thesepriv))) {
5002: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5003: }
5004: $userroles->{'user.priv.'.$role} = $thesestr;
5005: }
5006: return ($author,$adv);
5007: }
5008:
5009: sub role_status {
5010: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5011: my @pwhere = ();
5012: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5013: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5014: unless (!defined($$role) || $$role eq '') {
5015: $$where=join('.',@pwhere);
5016: $$trolecode=$$role.'.'.$$where;
5017: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5018: $$tstatus='is';
5019: if ($$tstart && $$tstart>$update) {
5020: $$tstatus='future';
5021: if ($$tstart<$now) {
5022: if ($$tstart && $$tstart>$refresh) {
5023: if (($$where ne '') && ($$role ne '')) {
5024: my (%allroles,%allgroups,$group_privs,
5025: %groups_roles,@rolecodes);
5026: my %userroles = (
5027: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5028: );
5029: @rolecodes = ('cm');
5030: my $spec=$$role.'.'.$$where;
5031: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5032: if ($$role =~ /^cr\//) {
5033: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5034: push(@rolecodes,'cr');
5035: } elsif ($$role eq 'gr') {
5036: push(@rolecodes,$$role);
5037: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5038: $env{'user.name'});
5039: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5040: (undef,my $group_privs) = split(/\//,$trole);
5041: $group_privs = &unescape($group_privs);
5042: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5043: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5044: &get_groups_roles($tdomain,$trest,
5045: \%course_roles,\@rolecodes,
5046: \%groups_roles);
5047: } else {
5048: push(@rolecodes,$$role);
5049: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5050: }
5051: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5052: &appenv(\%userroles,\@rolecodes);
5053: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5054: }
5055: }
5056: $$tstatus = 'is';
5057: }
5058: }
5059: if ($$tend) {
5060: if ($$tend<$update) {
5061: $$tstatus='expired';
5062: } elsif ($$tend<$now) {
5063: $$tstatus='will_not';
5064: }
5065: }
5066: }
5067: }
5068: }
5069:
5070: sub get_groups_roles {
5071: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5072: return unless((ref($cdom_courseroles) eq 'HASH') &&
5073: (ref($rolecodes) eq 'ARRAY') &&
5074: (ref($groups_roles) eq 'HASH'));
5075: if (keys(%{$cdom_courseroles}) > 0) {
5076: my ($cnum) = ($rest =~ /^($match_courseid)/);
5077: if ($cdom ne '' && $cnum ne '') {
5078: foreach my $key (keys(%{$cdom_courseroles})) {
5079: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5080: my $crsrole = $1;
5081: my $crssec = $2;
5082: if ($crsrole =~ /^cr/) {
5083: unless (grep(/^cr$/,@{$rolecodes})) {
5084: push(@{$rolecodes},'cr');
5085: }
5086: } else {
5087: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5088: push(@{$rolecodes},$crsrole);
5089: }
5090: }
5091: my $rolekey = "$crsrole./$cdom/$cnum";
5092: if ($crssec ne '') {
5093: $rolekey .= "/$crssec";
5094: }
5095: $rolekey .= './';
5096: $groups_roles->{$rolekey} = $rolecodes;
5097: }
5098: }
5099: }
5100: }
5101: return;
5102: }
5103:
5104: sub delete_env_groupprivs {
5105: my ($where,$courseroles,$possroles) = @_;
5106: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5107: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5108: unless (ref($courseroles->{$udom}) eq 'HASH') {
5109: %{$courseroles->{$udom}} =
5110: &get_my_roles('','','userroles',['active'],
5111: $possroles,[$udom],1);
5112: }
5113: if (ref($courseroles->{$udom}) eq 'HASH') {
5114: foreach my $item (keys(%{$courseroles->{$udom}})) {
5115: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5116: my $area = '/'.$cdom.'/'.$cnum;
5117: my $privkey = "user.priv.$crsrole.$area";
5118: if ($crssec ne '') {
5119: $privkey .= '/'.$crssec;
5120: }
5121: $privkey .= ".$area/$group";
5122: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5123: }
5124: }
5125: return;
5126: }
5127:
5128: sub check_adhoc_privs {
5129: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5130: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5131: my $setprivs;
5132: if ($env{$cckey}) {
5133: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5134: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5135: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5136: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5137: $setprivs = 1;
5138: }
5139: } else {
5140: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5141: $setprivs = 1;
5142: }
5143: return $setprivs;
5144: }
5145:
5146: sub set_adhoc_privileges {
5147: # role can be cc or ca
5148: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5149: my $area = '/'.$dcdom.'/'.$pickedcourse;
5150: my $spec = $role.'.'.$area;
5151: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5152: $env{'user.name'});
5153: my %ccrole = ();
5154: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5155: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5156: &appenv(\%userroles,[$role,'cm']);
5157: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5158: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5159: &appenv( {'request.role' => $spec,
5160: 'request.role.domain' => $dcdom,
5161: 'request.course.sec' => ''
5162: }
5163: );
5164: my $tadv=0;
5165: if (&allowed('adv') eq 'F') { $tadv=1; }
5166: &appenv({'request.role.adv' => $tadv});
5167: }
5168: }
5169:
5170: # --------------------------------------------------------------- get interface
5171:
5172: sub get {
5173: my ($namespace,$storearr,$udomain,$uname)=@_;
5174: my $items='';
5175: foreach my $item (@$storearr) {
5176: $items.=&escape($item).'&';
5177: }
5178: $items=~s/\&$//;
5179: if (!$udomain) { $udomain=$env{'user.domain'}; }
5180: if (!$uname) { $uname=$env{'user.name'}; }
5181: my $uhome=&homeserver($uname,$udomain);
5182:
5183: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5184: my @pairs=split(/\&/,$rep);
5185: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5186: return @pairs;
5187: }
5188: my %returnhash=();
5189: my $i=0;
5190: foreach my $item (@$storearr) {
5191: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5192: $i++;
5193: }
5194: return %returnhash;
5195: }
5196:
5197: # --------------------------------------------------------------- del interface
5198:
5199: sub del {
5200: my ($namespace,$storearr,$udomain,$uname)=@_;
5201: my $items='';
5202: foreach my $item (@$storearr) {
5203: $items.=&escape($item).'&';
5204: }
5205:
5206: $items=~s/\&$//;
5207: if (!$udomain) { $udomain=$env{'user.domain'}; }
5208: if (!$uname) { $uname=$env{'user.name'}; }
5209: my $uhome=&homeserver($uname,$udomain);
5210: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5211: }
5212:
5213: # -------------------------------------------------------------- dump interface
5214:
5215: sub unserialize {
5216: my ($rep, $escapedkeys) = @_;
5217:
5218: return {} if $rep =~ /^error/;
5219:
5220: my %returnhash=();
5221: foreach my $item (split /\&/, $rep) {
5222: my ($key, $value) = split(/=/, $item, 2);
5223: $key = unescape($key) unless $escapedkeys;
5224: next if $key =~ /^error: 2 /;
5225: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5226: }
5227: #return %returnhash;
5228: return \%returnhash;
5229: }
5230:
5231: # see Lond::dump_with_regexp
5232: # if $escapedkeys hash keys won't get unescaped.
5233: sub dump {
5234: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5235: if (!$udomain) { $udomain=$env{'user.domain'}; }
5236: if (!$uname) { $uname=$env{'user.name'}; }
5237: my $uhome=&homeserver($uname,$udomain);
5238:
5239: my $reply;
5240: if (grep { $_ eq $uhome } current_machine_ids()) {
5241: # user is hosted on this machine
5242: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5243: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5244: return %{unserialize($reply, $escapedkeys)};
5245: }
5246: if ($regexp) {
5247: $regexp=&escape($regexp);
5248: } else {
5249: $regexp='.';
5250: }
5251: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5252: my @pairs=split(/\&/,$rep);
5253: my %returnhash=();
5254: if (!($rep =~ /^error/ )) {
5255: foreach my $item (@pairs) {
5256: my ($key,$value)=split(/=/,$item,2);
5257: $key = unescape($key) unless $escapedkeys;
5258: #$key = &unescape($key);
5259: next if ($key =~ /^error: 2 /);
5260: $returnhash{$key}=&thaw_unescape($value);
5261: }
5262: }
5263: return %returnhash;
5264: }
5265:
5266:
5267: # --------------------------------------------------------- dumpstore interface
5268:
5269: sub dumpstore {
5270: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5271: # same as dump but keys must be escaped. They may contain colon separated
5272: # lists of values that may themself contain colons (e.g. symbs).
5273: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5274: }
5275:
5276: # -------------------------------------------------------------- keys interface
5277:
5278: sub getkeys {
5279: my ($namespace,$udomain,$uname)=@_;
5280: if (!$udomain) { $udomain=$env{'user.domain'}; }
5281: if (!$uname) { $uname=$env{'user.name'}; }
5282: my $uhome=&homeserver($uname,$udomain);
5283: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5284: my @keyarray=();
5285: foreach my $key (split(/\&/,$rep)) {
5286: next if ($key =~ /^error: 2 /);
5287: push(@keyarray,&unescape($key));
5288: }
5289: return @keyarray;
5290: }
5291:
5292: # --------------------------------------------------------------- currentdump
5293: sub currentdump {
5294: my ($courseid,$sdom,$sname)=@_;
5295: $courseid = $env{'request.course.id'} if (! defined($courseid));
5296: $sdom = $env{'user.domain'} if (! defined($sdom));
5297: $sname = $env{'user.name'} if (! defined($sname));
5298: my $uhome = &homeserver($sname,$sdom);
5299: my $rep;
5300:
5301: if (grep { $_ eq $uhome } current_machine_ids()) {
5302: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5303: $courseid)));
5304: } else {
5305: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5306: }
5307:
5308: return if ($rep =~ /^(error:|no_such_host)/);
5309: #
5310: my %returnhash=();
5311: #
5312: if ($rep eq "unknown_cmd") {
5313: # an old lond will not know currentdump
5314: # Do a dump and make it look like a currentdump
5315: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5316: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5317: my %hash = @tmp;
5318: @tmp=();
5319: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5320: } else {
5321: my @pairs=split(/\&/,$rep);
5322: foreach my $pair (@pairs) {
5323: my ($key,$value)=split(/=/,$pair,2);
5324: my ($symb,$param) = split(/:/,$key);
5325: $returnhash{&unescape($symb)}->{&unescape($param)} =
5326: &thaw_unescape($value);
5327: }
5328: }
5329: return %returnhash;
5330: }
5331:
5332: sub convert_dump_to_currentdump{
5333: my %hash = %{shift()};
5334: my %returnhash;
5335: # Code ripped from lond, essentially. The only difference
5336: # here is the unescaping done by lonnet::dump(). Conceivably
5337: # we might run in to problems with parameter names =~ /^v\./
5338: while (my ($key,$value) = each(%hash)) {
5339: my ($v,$symb,$param) = split(/:/,$key);
5340: $symb = &unescape($symb);
5341: $param = &unescape($param);
5342: next if ($v eq 'version' || $symb eq 'keys');
5343: next if (exists($returnhash{$symb}) &&
5344: exists($returnhash{$symb}->{$param}) &&
5345: $returnhash{$symb}->{'v.'.$param} > $v);
5346: $returnhash{$symb}->{$param}=$value;
5347: $returnhash{$symb}->{'v.'.$param}=$v;
5348: }
5349: #
5350: # Remove all of the keys in the hashes which keep track of
5351: # the version of the parameter.
5352: while (my ($symb,$param_hash) = each(%returnhash)) {
5353: # use a foreach because we are going to delete from the hash.
5354: foreach my $key (keys(%$param_hash)) {
5355: delete($param_hash->{$key}) if ($key =~ /^v\./);
5356: }
5357: }
5358: return \%returnhash;
5359: }
5360:
5361: # ------------------------------------------------------ critical inc interface
5362:
5363: sub cinc {
5364: return &inc(@_,'critical');
5365: }
5366:
5367: # --------------------------------------------------------------- inc interface
5368:
5369: sub inc {
5370: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5371: if (!$udomain) { $udomain=$env{'user.domain'}; }
5372: if (!$uname) { $uname=$env{'user.name'}; }
5373: my $uhome=&homeserver($uname,$udomain);
5374: my $items='';
5375: if (! ref($store)) {
5376: # got a single value, so use that instead
5377: $items = &escape($store).'=&';
5378: } elsif (ref($store) eq 'SCALAR') {
5379: $items = &escape($$store).'=&';
5380: } elsif (ref($store) eq 'ARRAY') {
5381: $items = join('=&',map {&escape($_);} @{$store});
5382: } elsif (ref($store) eq 'HASH') {
5383: while (my($key,$value) = each(%{$store})) {
5384: $items.= &escape($key).'='.&escape($value).'&';
5385: }
5386: }
5387: $items=~s/\&$//;
5388: if ($critical) {
5389: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5390: } else {
5391: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5392: }
5393: }
5394:
5395: # --------------------------------------------------------------- put interface
5396:
5397: sub put {
5398: my ($namespace,$storehash,$udomain,$uname)=@_;
5399: if (!$udomain) { $udomain=$env{'user.domain'}; }
5400: if (!$uname) { $uname=$env{'user.name'}; }
5401: my $uhome=&homeserver($uname,$udomain);
5402: my $items='';
5403: foreach my $item (keys(%$storehash)) {
5404: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5405: }
5406: $items=~s/\&$//;
5407: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5408: }
5409:
5410: # ------------------------------------------------------------ newput interface
5411:
5412: sub newput {
5413: my ($namespace,$storehash,$udomain,$uname)=@_;
5414: if (!$udomain) { $udomain=$env{'user.domain'}; }
5415: if (!$uname) { $uname=$env{'user.name'}; }
5416: my $uhome=&homeserver($uname,$udomain);
5417: my $items='';
5418: foreach my $key (keys(%$storehash)) {
5419: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5420: }
5421: $items=~s/\&$//;
5422: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5423: }
5424:
5425: # --------------------------------------------------------- putstore interface
5426:
5427: sub putstore {
5428: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5429: if (!$udomain) { $udomain=$env{'user.domain'}; }
5430: if (!$uname) { $uname=$env{'user.name'}; }
5431: my $uhome=&homeserver($uname,$udomain);
5432: my $items='';
5433: foreach my $key (keys(%$storehash)) {
5434: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5435: }
5436: $items=~s/\&$//;
5437: my $esc_symb=&escape($symb);
5438: my $esc_v=&escape($version);
5439: my $reply =
5440: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5441: $uhome);
5442: if ($reply eq 'unknown_cmd') {
5443: # gfall back to way things use to be done
5444: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5445: $uname);
5446: }
5447: return $reply;
5448: }
5449:
5450: sub old_putstore {
5451: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5452: if (!$udomain) { $udomain=$env{'user.domain'}; }
5453: if (!$uname) { $uname=$env{'user.name'}; }
5454: my $uhome=&homeserver($uname,$udomain);
5455: my %newstorehash;
5456: foreach my $item (keys(%$storehash)) {
5457: my $key = $version.':'.&escape($symb).':'.$item;
5458: $newstorehash{$key} = $storehash->{$item};
5459: }
5460: my $items='';
5461: my %allitems = ();
5462: foreach my $item (keys(%newstorehash)) {
5463: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5464: my $key = $1.':keys:'.$2;
5465: $allitems{$key} .= $3.':';
5466: }
5467: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5468: }
5469: foreach my $item (keys(%allitems)) {
5470: $allitems{$item} =~ s/\:$//;
5471: $items.= $item.'='.$allitems{$item}.'&';
5472: }
5473: $items=~s/\&$//;
5474: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5475: }
5476:
5477: # ------------------------------------------------------ critical put interface
5478:
5479: sub cput {
5480: my ($namespace,$storehash,$udomain,$uname)=@_;
5481: if (!$udomain) { $udomain=$env{'user.domain'}; }
5482: if (!$uname) { $uname=$env{'user.name'}; }
5483: my $uhome=&homeserver($uname,$udomain);
5484: my $items='';
5485: foreach my $item (keys(%$storehash)) {
5486: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5487: }
5488: $items=~s/\&$//;
5489: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5490: }
5491:
5492: # -------------------------------------------------------------- eget interface
5493:
5494: sub eget {
5495: my ($namespace,$storearr,$udomain,$uname)=@_;
5496: my $items='';
5497: foreach my $item (@$storearr) {
5498: $items.=&escape($item).'&';
5499: }
5500: $items=~s/\&$//;
5501: if (!$udomain) { $udomain=$env{'user.domain'}; }
5502: if (!$uname) { $uname=$env{'user.name'}; }
5503: my $uhome=&homeserver($uname,$udomain);
5504: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5505: my @pairs=split(/\&/,$rep);
5506: my %returnhash=();
5507: my $i=0;
5508: foreach my $item (@$storearr) {
5509: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5510: $i++;
5511: }
5512: return %returnhash;
5513: }
5514:
5515: # ------------------------------------------------------------ tmpput interface
5516: sub tmpput {
5517: my ($storehash,$server,$context)=@_;
5518: my $items='';
5519: foreach my $item (keys(%$storehash)) {
5520: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5521: }
5522: $items=~s/\&$//;
5523: if (defined($context)) {
5524: $items .= ':'.&escape($context);
5525: }
5526: return &reply("tmpput:$items",$server);
5527: }
5528:
5529: # ------------------------------------------------------------ tmpget interface
5530: sub tmpget {
5531: my ($token,$server)=@_;
5532: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5533: my $rep=&reply("tmpget:$token",$server);
5534: my %returnhash;
5535: foreach my $item (split(/\&/,$rep)) {
5536: my ($key,$value)=split(/=/,$item);
5537: next if ($key =~ /^error: 2 /);
5538: $returnhash{&unescape($key)}=&thaw_unescape($value);
5539: }
5540: return %returnhash;
5541: }
5542:
5543: # ------------------------------------------------------------ tmpdel interface
5544: sub tmpdel {
5545: my ($token,$server)=@_;
5546: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5547: return &reply("tmpdel:$token",$server);
5548: }
5549:
5550: # -------------------------------------------------- portfolio access checking
5551:
5552: sub portfolio_access {
5553: my ($requrl) = @_;
5554: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5555: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5556: if ($result) {
5557: my %setters;
5558: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5559: my ($startblock,$endblock) =
5560: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5561: if ($startblock && $endblock) {
5562: return 'B';
5563: }
5564: } else {
5565: my ($startblock,$endblock) =
5566: &Apache::loncommon::blockcheck(\%setters,'port');
5567: if ($startblock && $endblock) {
5568: return 'B';
5569: }
5570: }
5571: }
5572: if ($result eq 'ok') {
5573: return 'F';
5574: } elsif ($result =~ /^[^:]+:guest_/) {
5575: return 'A';
5576: }
5577: return '';
5578: }
5579:
5580: sub get_portfolio_access {
5581: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5582:
5583: if (!ref($access_hash)) {
5584: my $current_perms = &get_portfile_permissions($udom,$unum);
5585: my %access_controls = &get_access_controls($current_perms,$group,
5586: $file_name);
5587: $access_hash = $access_controls{$file_name};
5588: }
5589:
5590: my ($public,$guest,@domains,@users,@courses,@groups);
5591: my $now = time;
5592: if (ref($access_hash) eq 'HASH') {
5593: foreach my $key (keys(%{$access_hash})) {
5594: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5595: if ($start > $now) {
5596: next;
5597: }
5598: if ($end && $end<$now) {
5599: next;
5600: }
5601: if ($scope eq 'public') {
5602: $public = $key;
5603: last;
5604: } elsif ($scope eq 'guest') {
5605: $guest = $key;
5606: } elsif ($scope eq 'domains') {
5607: push(@domains,$key);
5608: } elsif ($scope eq 'users') {
5609: push(@users,$key);
5610: } elsif ($scope eq 'course') {
5611: push(@courses,$key);
5612: } elsif ($scope eq 'group') {
5613: push(@groups,$key);
5614: }
5615: }
5616: if ($public) {
5617: return 'ok';
5618: }
5619: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5620: if ($guest) {
5621: return $guest;
5622: }
5623: } else {
5624: if (@domains > 0) {
5625: foreach my $domkey (@domains) {
5626: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5627: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5628: return 'ok';
5629: }
5630: }
5631: }
5632: }
5633: if (@users > 0) {
5634: foreach my $userkey (@users) {
5635: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5636: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5637: if (ref($item) eq 'HASH') {
5638: if (($item->{'uname'} eq $env{'user.name'}) &&
5639: ($item->{'udom'} eq $env{'user.domain'})) {
5640: return 'ok';
5641: }
5642: }
5643: }
5644: }
5645: }
5646: }
5647: my %roleshash;
5648: my @courses_and_groups = @courses;
5649: push(@courses_and_groups,@groups);
5650: if (@courses_and_groups > 0) {
5651: my (%allgroups,%allroles);
5652: my ($start,$end,$role,$sec,$group);
5653: foreach my $envkey (%env) {
5654: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5655: my $cid = $2.'_'.$3;
5656: if ($1 eq 'gr') {
5657: $group = $4;
5658: $allgroups{$cid}{$group} = $env{$envkey};
5659: } else {
5660: if ($4 eq '') {
5661: $sec = 'none';
5662: } else {
5663: $sec = $4;
5664: }
5665: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5666: }
5667: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5668: my $cid = $2.'_'.$3;
5669: if ($4 eq '') {
5670: $sec = 'none';
5671: } else {
5672: $sec = $4;
5673: }
5674: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5675: }
5676: }
5677: if (keys(%allroles) == 0) {
5678: return;
5679: }
5680: foreach my $key (@courses_and_groups) {
5681: my %content = %{$$access_hash{$key}};
5682: my $cnum = $content{'number'};
5683: my $cdom = $content{'domain'};
5684: my $cid = $cdom.'_'.$cnum;
5685: if (!exists($allroles{$cid})) {
5686: next;
5687: }
5688: foreach my $role_id (keys(%{$content{'roles'}})) {
5689: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5690: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5691: my @status = @{$content{'roles'}{$role_id}{'access'}};
5692: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5693: foreach my $role (keys(%{$allroles{$cid}})) {
5694: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5695: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5696: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5697: if (grep/^all$/,@sections) {
5698: return 'ok';
5699: } else {
5700: if (grep/^$sec$/,@sections) {
5701: return 'ok';
5702: }
5703: }
5704: }
5705: }
5706: if (keys(%{$allgroups{$cid}}) == 0) {
5707: if (grep/^none$/,@groups) {
5708: return 'ok';
5709: }
5710: } else {
5711: if (grep/^all$/,@groups) {
5712: return 'ok';
5713: }
5714: foreach my $group (keys(%{$allgroups{$cid}})) {
5715: if (grep/^$group$/,@groups) {
5716: return 'ok';
5717: }
5718: }
5719: }
5720: }
5721: }
5722: }
5723: }
5724: }
5725: if ($guest) {
5726: return $guest;
5727: }
5728: }
5729: }
5730: return;
5731: }
5732:
5733: sub course_group_datechecker {
5734: my ($dates,$now,$status) = @_;
5735: my ($start,$end) = split(/\./,$dates);
5736: if (!$start && !$end) {
5737: return 'ok';
5738: }
5739: if (grep/^active$/,@{$status}) {
5740: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5741: return 'ok';
5742: }
5743: }
5744: if (grep/^previous$/,@{$status}) {
5745: if ($end > $now ) {
5746: return 'ok';
5747: }
5748: }
5749: if (grep/^future$/,@{$status}) {
5750: if ($start > $now) {
5751: return 'ok';
5752: }
5753: }
5754: return;
5755: }
5756:
5757: sub parse_portfolio_url {
5758: my ($url) = @_;
5759:
5760: my ($type,$udom,$unum,$group,$file_name);
5761:
5762: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5763: $type = 1;
5764: $udom = $1;
5765: $unum = $2;
5766: $file_name = $3;
5767: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5768: $type = 2;
5769: $udom = $1;
5770: $unum = $2;
5771: $group = $3;
5772: $file_name = $3.'/'.$4;
5773: }
5774: if (wantarray) {
5775: return ($type,$udom,$unum,$file_name,$group);
5776: }
5777: return $type;
5778: }
5779:
5780: sub is_portfolio_url {
5781: my ($url) = @_;
5782: return scalar(&parse_portfolio_url($url));
5783: }
5784:
5785: sub is_portfolio_file {
5786: my ($file) = @_;
5787: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5788: return 1;
5789: }
5790: return;
5791: }
5792:
5793: sub usertools_access {
5794: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5795: my ($access,%tools);
5796: if ($context eq '') {
5797: $context = 'tools';
5798: }
5799: if ($context eq 'requestcourses') {
5800: %tools = (
5801: official => 1,
5802: unofficial => 1,
5803: community => 1,
5804: );
5805: } elsif ($context eq 'requestauthor') {
5806: %tools = (
5807: requestauthor => 1,
5808: );
5809: } else {
5810: %tools = (
5811: aboutme => 1,
5812: blog => 1,
5813: webdav => 1,
5814: portfolio => 1,
5815: );
5816: }
5817: return if (!defined($tools{$tool}));
5818:
5819: if ((!defined($udom)) || (!defined($uname))) {
5820: $udom = $env{'user.domain'};
5821: $uname = $env{'user.name'};
5822: }
5823:
5824: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5825: if ($action ne 'reload') {
5826: if ($context eq 'requestcourses') {
5827: return $env{'environment.canrequest.'.$tool};
5828: } elsif ($context eq 'requestauthor') {
5829: return $env{'environment.canrequest.author'};
5830: } else {
5831: return $env{'environment.availabletools.'.$tool};
5832: }
5833: }
5834: }
5835:
5836: my ($toolstatus,$inststatus,$envkey);
5837: if ($context eq 'requestauthor') {
5838: $envkey = $context;
5839: } else {
5840: $envkey = $context.'.'.$tool;
5841: }
5842:
5843: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5844: ($action ne 'reload')) {
5845: $toolstatus = $env{'environment.'.$envkey};
5846: $inststatus = $env{'environment.inststatus'};
5847: } else {
5848: if (ref($userenvref) eq 'HASH') {
5849: $toolstatus = $userenvref->{$envkey};
5850: $inststatus = $userenvref->{'inststatus'};
5851: } else {
5852: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
5853: $toolstatus = $userenv{$envkey};
5854: $inststatus = $userenv{'inststatus'};
5855: }
5856: }
5857:
5858: if ($toolstatus ne '') {
5859: if ($toolstatus) {
5860: $access = 1;
5861: } else {
5862: $access = 0;
5863: }
5864: return $access;
5865: }
5866:
5867: my ($is_adv,%domdef);
5868: if (ref($is_advref) eq 'HASH') {
5869: $is_adv = $is_advref->{'is_adv'};
5870: } else {
5871: $is_adv = &is_advanced_user($udom,$uname);
5872: }
5873: if (ref($domdefref) eq 'HASH') {
5874: %domdef = %{$domdefref};
5875: } else {
5876: %domdef = &get_domain_defaults($udom);
5877: }
5878: if (ref($domdef{$tool}) eq 'HASH') {
5879: if ($is_adv) {
5880: if ($domdef{$tool}{'_LC_adv'} ne '') {
5881: if ($domdef{$tool}{'_LC_adv'}) {
5882: $access = 1;
5883: } else {
5884: $access = 0;
5885: }
5886: return $access;
5887: }
5888: }
5889: if ($inststatus ne '') {
5890: my ($hasaccess,$hasnoaccess);
5891: foreach my $affiliation (split(/:/,$inststatus)) {
5892: if ($domdef{$tool}{$affiliation} ne '') {
5893: if ($domdef{$tool}{$affiliation}) {
5894: $hasaccess = 1;
5895: } else {
5896: $hasnoaccess = 1;
5897: }
5898: }
5899: }
5900: if ($hasaccess || $hasnoaccess) {
5901: if ($hasaccess) {
5902: $access = 1;
5903: } elsif ($hasnoaccess) {
5904: $access = 0;
5905: }
5906: return $access;
5907: }
5908: } else {
5909: if ($domdef{$tool}{'default'} ne '') {
5910: if ($domdef{$tool}{'default'}) {
5911: $access = 1;
5912: } elsif ($domdef{$tool}{'default'} == 0) {
5913: $access = 0;
5914: }
5915: return $access;
5916: }
5917: }
5918: } else {
5919: if (($context eq 'tools') && ($tool ne 'webdav')) {
5920: $access = 1;
5921: } else {
5922: $access = 0;
5923: }
5924: return $access;
5925: }
5926: }
5927:
5928: sub is_course_owner {
5929: my ($cdom,$cnum,$udom,$uname) = @_;
5930: if (($udom eq '') || ($uname eq '')) {
5931: $udom = $env{'user.domain'};
5932: $uname = $env{'user.name'};
5933: }
5934: unless (($udom eq '') || ($uname eq '')) {
5935: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5936: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5937: return 1;
5938: } else {
5939: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5940: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5941: return 1;
5942: }
5943: }
5944: }
5945: }
5946: return;
5947: }
5948:
5949: sub is_advanced_user {
5950: my ($udom,$uname) = @_;
5951: if ($udom ne '' && $uname ne '') {
5952: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5953: if (wantarray) {
5954: return ($env{'user.adv'},$env{'user.author'});
5955: } else {
5956: return $env{'user.adv'};
5957: }
5958: }
5959: }
5960: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5961: my %allroles;
5962: my ($is_adv,$is_author);
5963: foreach my $role (keys(%roleshash)) {
5964: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5965: my $area = '/'.$tdomain.'/'.$trest;
5966: if ($sec ne '') {
5967: $area .= '/'.$sec;
5968: }
5969: if (($area ne '') && ($trole ne '')) {
5970: my $spec=$trole.'.'.$area;
5971: if ($trole =~ /^cr\//) {
5972: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5973: } elsif ($trole ne 'gr') {
5974: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5975: }
5976: if ($trole eq 'au') {
5977: $is_author = 1;
5978: }
5979: }
5980: }
5981: foreach my $role (keys(%allroles)) {
5982: last if ($is_adv);
5983: foreach my $item (split(/:/,$allroles{$role})) {
5984: if ($item ne '') {
5985: my ($privilege,$restrictions)=split(/&/,$item);
5986: if ($privilege eq 'adv') {
5987: $is_adv = 1;
5988: last;
5989: }
5990: }
5991: }
5992: }
5993: if (wantarray) {
5994: return ($is_adv,$is_author);
5995: }
5996: return $is_adv;
5997: }
5998:
5999: sub check_can_request {
6000: my ($dom,$can_request,$request_domains) = @_;
6001: my $canreq = 0;
6002: my ($types,$typename) = &Apache::loncommon::course_types();
6003: my @options = ('approval','validate','autolimit');
6004: my $optregex = join('|',@options);
6005: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6006: foreach my $type (@{$types}) {
6007: if (&usertools_access($env{'user.name'},
6008: $env{'user.domain'},
6009: $type,undef,'requestcourses')) {
6010: $canreq ++;
6011: if (ref($request_domains) eq 'HASH') {
6012: push(@{$request_domains->{$type}},$env{'user.domain'});
6013: }
6014: if ($dom eq $env{'user.domain'}) {
6015: $can_request->{$type} = 1;
6016: }
6017: }
6018: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6019: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6020: if (@curr > 0) {
6021: foreach my $item (@curr) {
6022: if (ref($request_domains) eq 'HASH') {
6023: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6024: if ($otherdom ne '') {
6025: if (ref($request_domains->{$type}) eq 'ARRAY') {
6026: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6027: push(@{$request_domains->{$type}},$otherdom);
6028: }
6029: } else {
6030: push(@{$request_domains->{$type}},$otherdom);
6031: }
6032: }
6033: }
6034: }
6035: unless($dom eq $env{'user.domain'}) {
6036: $canreq ++;
6037: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6038: $can_request->{$type} = 1;
6039: }
6040: }
6041: }
6042: }
6043: }
6044: }
6045: return $canreq;
6046: }
6047:
6048: # ---------------------------------------------- Custom access rule evaluation
6049:
6050: sub customaccess {
6051: my ($priv,$uri)=@_;
6052: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6053: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6054: $udom = &LONCAPA::clean_domain($udom);
6055: $ucrs = &LONCAPA::clean_username($ucrs);
6056: my $access=0;
6057: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6058: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6059: if ($type eq 'user') {
6060: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6061: my ($tdom,$tuname)=split(m{/},$scope);
6062: if ($tdom) {
6063: if ($tdom ne $env{'user.domain'}) { next; }
6064: }
6065: if ($tuname) {
6066: if ($tuname ne $env{'user.name'}) { next; }
6067: }
6068: $access=($effect eq 'allow');
6069: last;
6070: }
6071: } else {
6072: if ($role) {
6073: if ($role ne $urole) { next; }
6074: }
6075: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6076: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6077: if ($tdom) {
6078: if ($tdom ne $udom) { next; }
6079: }
6080: if ($tcrs) {
6081: if ($tcrs ne $ucrs) { next; }
6082: }
6083: if ($tsec) {
6084: if ($tsec ne $usec) { next; }
6085: }
6086: $access=($effect eq 'allow');
6087: last;
6088: }
6089: if ($realm eq '' && $role eq '') {
6090: $access=($effect eq 'allow');
6091: }
6092: }
6093: }
6094: return $access;
6095: }
6096:
6097: # ------------------------------------------------- Check for a user privilege
6098:
6099: sub allowed {
6100: my ($priv,$uri,$symb,$role)=@_;
6101: my $ver_orguri=$uri;
6102: $uri=&deversion($uri);
6103: my $orguri=$uri;
6104: $uri=&declutter($uri);
6105:
6106: if ($priv eq 'evb') {
6107: # Evade communication block restrictions for specified role in a course
6108: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6109: return $1;
6110: } else {
6111: return;
6112: }
6113: }
6114:
6115: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6116: # Free bre access to adm and meta resources
6117: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6118: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6119: && ($priv eq 'bre')) {
6120: return 'F';
6121: }
6122:
6123: # Free bre access to user's own portfolio contents
6124: my ($space,$domain,$name,@dir)=split('/',$uri);
6125: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6126: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6127: my %setters;
6128: my ($startblock,$endblock) =
6129: &Apache::loncommon::blockcheck(\%setters,'port');
6130: if ($startblock && $endblock) {
6131: return 'B';
6132: } else {
6133: return 'F';
6134: }
6135: }
6136:
6137: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6138: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6139: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6140: if (exists($env{'request.course.id'})) {
6141: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6142: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6143: if (($domain eq $cdom) && ($name eq $cnum)) {
6144: my $courseprivid=$env{'request.course.id'};
6145: $courseprivid=~s/\_/\//;
6146: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6147: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6148: return $1;
6149: } else {
6150: if ($env{'request.course.sec'}) {
6151: $courseprivid.='/'.$env{'request.course.sec'};
6152: }
6153: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6154: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6155: return $2;
6156: }
6157: }
6158: }
6159: }
6160: }
6161:
6162: # Free bre to public access
6163:
6164: if ($priv eq 'bre') {
6165: my $copyright=&metadata($uri,'copyright');
6166: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6167: return 'F';
6168: }
6169: if ($copyright eq 'priv') {
6170: $uri=~/([^\/]+)\/([^\/]+)\//;
6171: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6172: return '';
6173: }
6174: }
6175: if ($copyright eq 'domain') {
6176: $uri=~/([^\/]+)\/([^\/]+)\//;
6177: unless (($env{'user.domain'} eq $1) ||
6178: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6179: return '';
6180: }
6181: }
6182: if ($env{'request.role'}=~ /li\.\//) {
6183: # Library role, so allow browsing of resources in this domain.
6184: return 'F';
6185: }
6186: if ($copyright eq 'custom') {
6187: unless (&customaccess($priv,$uri)) { return ''; }
6188: }
6189: }
6190: # Domain coordinator is trying to create a course
6191: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6192: # uri is the requested domain in this case.
6193: # comparison to 'request.role.domain' shows if the user has selected
6194: # a role of dc for the domain in question.
6195: return 'F' if ($uri eq $env{'request.role.domain'});
6196: }
6197:
6198: my $thisallowed='';
6199: my $statecond=0;
6200: my $courseprivid='';
6201:
6202: my $ownaccess;
6203: # Community Coordinator or Assistant Co-author browsing resource space.
6204: if (($priv eq 'bro') && ($env{'user.author'})) {
6205: if ($uri eq '') {
6206: $ownaccess = 1;
6207: } else {
6208: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6209: my $udom = $env{'user.domain'};
6210: my $uname = $env{'user.name'};
6211: if ($uri =~ m{^\Q$udom\E/?$}) {
6212: $ownaccess = 1;
6213: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6214: unless ($uri =~ m{\.\./}) {
6215: $ownaccess = 1;
6216: }
6217: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6218: my $now = time;
6219: if ($uri =~ m{^([^/]+)/?$}) {
6220: my $adom = $1;
6221: foreach my $key (keys(%env)) {
6222: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6223: my ($start,$end) = split('.',$env{$key});
6224: if (($now >= $start) && (!$end || $end < $now)) {
6225: $ownaccess = 1;
6226: last;
6227: }
6228: }
6229: }
6230: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6231: my $adom = $1;
6232: my $aname = $2;
6233: foreach my $role ('ca','aa') {
6234: if ($env{"user.role.$role./$adom/$aname"}) {
6235: my ($start,$end) =
6236: split('.',$env{"user.role.$role./$adom/$aname"});
6237: if (($now >= $start) && (!$end || $end < $now)) {
6238: $ownaccess = 1;
6239: last;
6240: }
6241: }
6242: }
6243: }
6244: }
6245: }
6246: }
6247: }
6248:
6249: # Course
6250:
6251: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6252: unless (($priv eq 'bro') && (!$ownaccess)) {
6253: $thisallowed.=$1;
6254: }
6255: }
6256:
6257: # Domain
6258:
6259: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6260: =~/\Q$priv\E\&([^\:]*)/) {
6261: unless (($priv eq 'bro') && (!$ownaccess)) {
6262: $thisallowed.=$1;
6263: }
6264: }
6265:
6266: # User who is not author or co-author might still be able to edit
6267: # resource of an author in the domain (e.g., if Domain Coordinator).
6268: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6269: (&allowed('mdc',$env{'request.course.id'}))) {
6270: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6271: $thisallowed.=$1;
6272: }
6273: }
6274:
6275: # Course: uri itself is a course
6276: my $courseuri=$uri;
6277: $courseuri=~s/\_(\d)/\/$1/;
6278: $courseuri=~s/^([^\/])/\/$1/;
6279:
6280: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6281: =~/\Q$priv\E\&([^\:]*)/) {
6282: unless (($priv eq 'bro') && (!$ownaccess)) {
6283: $thisallowed.=$1;
6284: }
6285: }
6286:
6287: # URI is an uploaded document for this course, default permissions don't matter
6288: # not allowing 'edit' access (editupload) to uploaded course docs
6289: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6290: $thisallowed='';
6291: my ($match)=&is_on_map($uri);
6292: if ($match) {
6293: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6294: =~/\Q$priv\E\&([^\:]*)/) {
6295: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6296: if (@blockers > 0) {
6297: $thisallowed = 'B';
6298: } else {
6299: $thisallowed.=$1;
6300: }
6301: }
6302: } else {
6303: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6304: if ($refuri) {
6305: if ($refuri =~ m|^/adm/|) {
6306: $thisallowed='F';
6307: } else {
6308: $refuri=&declutter($refuri);
6309: my ($match) = &is_on_map($refuri);
6310: if ($match) {
6311: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6312: if (@blockers > 0) {
6313: $thisallowed = 'B';
6314: } else {
6315: $thisallowed='F';
6316: }
6317: }
6318: }
6319: }
6320: }
6321: }
6322:
6323: if ($priv eq 'bre'
6324: && $thisallowed ne 'F'
6325: && $thisallowed ne '2'
6326: && &is_portfolio_url($uri)) {
6327: $thisallowed = &portfolio_access($uri);
6328: }
6329:
6330: # Full access at system, domain or course-wide level? Exit.
6331: if ($thisallowed=~/F/) {
6332: return 'F';
6333: }
6334:
6335: # If this is generating or modifying users, exit with special codes
6336:
6337: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6338: if (($priv eq 'cca') || ($priv eq 'caa')) {
6339: my ($audom,$auname)=split('/',$uri);
6340: # no author name given, so this just checks on the general right to make a co-author in this domain
6341: unless ($auname) { return $thisallowed; }
6342: # an author name is given, so we are about to actually make a co-author for a certain account
6343: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6344: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6345: ($audom ne $env{'request.role.domain'}))) { return ''; }
6346: }
6347: return $thisallowed;
6348: }
6349: #
6350: # Gathered so far: system, domain and course wide privileges
6351: #
6352: # Course: See if uri or referer is an individual resource that is part of
6353: # the course
6354:
6355: if ($env{'request.course.id'}) {
6356:
6357: $courseprivid=$env{'request.course.id'};
6358: if ($env{'request.course.sec'}) {
6359: $courseprivid.='/'.$env{'request.course.sec'};
6360: }
6361: $courseprivid=~s/\_/\//;
6362: my $checkreferer=1;
6363: my ($match,$cond)=&is_on_map($uri);
6364: if ($match) {
6365: $statecond=$cond;
6366: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6367: =~/\Q$priv\E\&([^\:]*)/) {
6368: my $value = $1;
6369: if ($priv eq 'bre') {
6370: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6371: if (@blockers > 0) {
6372: $thisallowed = 'B';
6373: } else {
6374: $thisallowed.=$value;
6375: }
6376: } else {
6377: $thisallowed.=$value;
6378: }
6379: $checkreferer=0;
6380: }
6381: }
6382:
6383: if ($checkreferer) {
6384: my $refuri=$env{'httpref.'.$orguri};
6385: unless ($refuri) {
6386: foreach my $key (keys(%env)) {
6387: if ($key=~/^httpref\..*\*/) {
6388: my $pattern=$key;
6389: $pattern=~s/^httpref\.\/res\///;
6390: $pattern=~s/\*/\[\^\/\]\+/g;
6391: $pattern=~s/\//\\\//g;
6392: if ($orguri=~/$pattern/) {
6393: $refuri=$env{$key};
6394: }
6395: }
6396: }
6397: }
6398:
6399: if ($refuri) {
6400: $refuri=&declutter($refuri);
6401: my ($match,$cond)=&is_on_map($refuri);
6402: if ($match) {
6403: my $refstatecond=$cond;
6404: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6405: =~/\Q$priv\E\&([^\:]*)/) {
6406: my $value = $1;
6407: if ($priv eq 'bre') {
6408: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6409: if (@blockers > 0) {
6410: $thisallowed = 'B';
6411: } else {
6412: $thisallowed.=$value;
6413: }
6414: } else {
6415: $thisallowed.=$value;
6416: }
6417: $uri=$refuri;
6418: $statecond=$refstatecond;
6419: }
6420: }
6421: }
6422: }
6423: }
6424:
6425: #
6426: # Gathered now: all privileges that could apply, and condition number
6427: #
6428: #
6429: # Full or no access?
6430: #
6431:
6432: if ($thisallowed=~/F/) {
6433: return 'F';
6434: }
6435:
6436: unless ($thisallowed) {
6437: return '';
6438: }
6439:
6440: # Restrictions exist, deal with them
6441: #
6442: # C:according to course preferences
6443: # R:according to resource settings
6444: # L:unless locked
6445: # X:according to user session state
6446: #
6447:
6448: # Possibly locked functionality, check all courses
6449: # Locks might take effect only after 10 minutes cache expiration for other
6450: # courses, and 2 minutes for current course
6451:
6452: my $envkey;
6453: if ($thisallowed=~/L/) {
6454: foreach $envkey (keys(%env)) {
6455: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6456: my $courseid=$2;
6457: my $roleid=$1.'.'.$2;
6458: $courseid=~s/^\///;
6459: my $expiretime=600;
6460: if ($env{'request.role'} eq $roleid) {
6461: $expiretime=120;
6462: }
6463: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6464: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6465: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6466: &coursedescription($courseid,{'freshen_cache' => 1});
6467: }
6468: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6469: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6470: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6471: &log($env{'user.domain'},$env{'user.name'},
6472: $env{'user.home'},
6473: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6474: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6475: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6476: return '';
6477: }
6478: }
6479: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6480: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6481: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6482: &log($env{'user.domain'},$env{'user.name'},
6483: $env{'user.home'},
6484: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6485: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6486: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6487: return '';
6488: }
6489: }
6490: }
6491: }
6492: }
6493:
6494: #
6495: # Rest of the restrictions depend on selected course
6496: #
6497:
6498: unless ($env{'request.course.id'}) {
6499: if ($thisallowed eq 'A') {
6500: return 'A';
6501: } elsif ($thisallowed eq 'B') {
6502: return 'B';
6503: } else {
6504: return '1';
6505: }
6506: }
6507:
6508: #
6509: # Now user is definitely in a course
6510: #
6511:
6512:
6513: # Course preferences
6514:
6515: if ($thisallowed=~/C/) {
6516: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6517: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6518: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6519: =~/\Q$rolecode\E/) {
6520: if (($priv ne 'pch') && ($priv ne 'plc')) {
6521: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6522: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6523: $env{'request.course.id'});
6524: }
6525: return '';
6526: }
6527:
6528: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6529: =~/\Q$unamedom\E/) {
6530: if (($priv ne 'pch') && ($priv ne 'plc')) {
6531: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6532: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6533: $env{'request.course.id'});
6534: }
6535: return '';
6536: }
6537: }
6538:
6539: # Resource preferences
6540:
6541: if ($thisallowed=~/R/) {
6542: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6543: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6544: if (($priv ne 'pch') && ($priv ne 'plc')) {
6545: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6546: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6547: }
6548: return '';
6549: }
6550: }
6551:
6552: # Restricted by state or randomout?
6553:
6554: if ($thisallowed=~/X/) {
6555: if ($env{'acc.randomout'}) {
6556: if (!$symb) { $symb=&symbread($uri,1); }
6557: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6558: return '';
6559: }
6560: }
6561: if (&condval($statecond)) {
6562: return '2';
6563: } else {
6564: return '';
6565: }
6566: }
6567:
6568: if ($thisallowed eq 'A') {
6569: return 'A';
6570: } elsif ($thisallowed eq 'B') {
6571: return 'B';
6572: }
6573: return 'F';
6574: }
6575:
6576: # ------------------------------------------- Check construction space access
6577:
6578: sub constructaccess {
6579: my ($url,$setpriv)=@_;
6580:
6581: # We do not allow editing of previous versions of files
6582: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6583:
6584: # Get username and domain from URL
6585: my ($ownername,$ownerdomain,$ownerhome);
6586:
6587: ($ownerdomain,$ownername) =
6588: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6589:
6590: # The URL does not really point to any authorspace, forget it
6591: unless (($ownername) && ($ownerdomain)) { return ''; }
6592:
6593: # Now we need to see if the user has access to the authorspace of
6594: # $ownername at $ownerdomain
6595:
6596: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6597: # Real author for this?
6598: $ownerhome = $env{'user.home'};
6599: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6600: return ($ownername,$ownerdomain,$ownerhome);
6601: }
6602: } else {
6603: # Co-author for this?
6604: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6605: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6606: $ownerhome = &homeserver($ownername,$ownerdomain);
6607: return ($ownername,$ownerdomain,$ownerhome);
6608: }
6609: }
6610:
6611: # We don't have any access right now. If we are not possibly going to do anything about this,
6612: # we might as well leave
6613: unless ($setpriv) { return ''; }
6614:
6615: # Backdoor access?
6616: my $allowed=&allowed('eco',$ownerdomain);
6617: # Nope
6618: unless ($allowed) { return ''; }
6619: # Looks like we may have access, but could be locked by the owner of the construction space
6620: if ($allowed eq 'U') {
6621: my %blocked=&get('environment',['domcoord.author'],
6622: $ownerdomain,$ownername);
6623: # Is blocked by owner
6624: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
6625: }
6626: if (($allowed eq 'F') || ($allowed eq 'U')) {
6627: # Grant temporary access
6628: my $then=$env{'user.login.time'};
6629: my $update==$env{'user.update.time'};
6630: if (!$update) { $update = $then; }
6631: my $refresh=$env{'user.refresh.time'};
6632: if (!$refresh) { $refresh = $update; }
6633: my $now = time;
6634: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
6635: $now,'ca','constructaccess');
6636: $ownerhome = &homeserver($ownername,$ownerdomain);
6637: return($ownername,$ownerdomain,$ownerhome);
6638: }
6639: # No business here
6640: return '';
6641: }
6642:
6643: sub get_comm_blocks {
6644: my ($cdom,$cnum) = @_;
6645: if ($cdom eq '' || $cnum eq '') {
6646: return unless ($env{'request.course.id'});
6647: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6648: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6649: }
6650: my %commblocks;
6651: my $hashid=$cdom.'_'.$cnum;
6652: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6653: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6654: %commblocks = %{$blocksref};
6655: } else {
6656: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6657: my $cachetime = 600;
6658: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6659: }
6660: return %commblocks;
6661: }
6662:
6663: sub has_comm_blocking {
6664: my ($priv,$symb,$uri,$blocks) = @_;
6665: return unless ($env{'request.course.id'});
6666: return unless ($priv eq 'bre');
6667: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6668: my %commblocks;
6669: if (ref($blocks) eq 'HASH') {
6670: %commblocks = %{$blocks};
6671: } else {
6672: %commblocks = &get_comm_blocks();
6673: }
6674: return unless (keys(%commblocks) > 0);
6675: if (!$symb) { $symb=&symbread($uri,1); }
6676: my ($map,$resid,undef)=&decode_symb($symb);
6677: my %tocheck = (
6678: maps => $map,
6679: resources => $symb,
6680: );
6681: my @blockers;
6682: my $now = time;
6683: my $navmap = Apache::lonnavmaps::navmap->new();
6684: foreach my $block (keys(%commblocks)) {
6685: if ($block =~ /^(\d+)____(\d+)$/) {
6686: my ($start,$end) = ($1,$2);
6687: if ($start <= $now && $end >= $now) {
6688: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6689: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6690: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6691: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6692: unless (grep(/^\Q$block\E$/,@blockers)) {
6693: push(@blockers,$block);
6694: }
6695: }
6696: }
6697: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6698: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6699: unless (grep(/^\Q$block\E$/,@blockers)) {
6700: push(@blockers,$block);
6701: }
6702: }
6703: }
6704: }
6705: }
6706: }
6707: } elsif ($block =~ /^firstaccess____(.+)$/) {
6708: my $item = $1;
6709: my @to_test;
6710: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6711: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6712: my $check_interval;
6713: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6714: my @interval;
6715: my $type = 'map';
6716: if ($item eq 'course') {
6717: $type = 'course';
6718: @interval=&EXT("resource.0.interval");
6719: } else {
6720: if ($item =~ /___\d+___/) {
6721: $type = 'resource';
6722: @interval=&EXT("resource.0.interval",$item);
6723: if (ref($navmap)) {
6724: my $res = $navmap->getBySymb($item);
6725: push(@to_test,$res);
6726: }
6727: } else {
6728: my $mapsymb = &symbread($item,1);
6729: if ($mapsymb) {
6730: if (ref($navmap)) {
6731: my $mapres = $navmap->getBySymb($mapsymb);
6732: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6733: foreach my $res (@to_test) {
6734: my $symb = $res->symb();
6735: next if ($symb eq $mapsymb);
6736: if ($symb ne '') {
6737: @interval=&EXT("resource.0.interval",$symb);
6738: last;
6739: }
6740: }
6741: }
6742: }
6743: }
6744: }
6745: if ($interval[0] =~ /\d+/) {
6746: my $first_access;
6747: if ($type eq 'resource') {
6748: $first_access=&get_first_access($interval[1],$item);
6749: } elsif ($type eq 'map') {
6750: $first_access=&get_first_access($interval[1],undef,$item);
6751: } else {
6752: $first_access=&get_first_access($interval[1]);
6753: }
6754: if ($first_access) {
6755: my $timesup = $first_access+$interval[0];
6756: if ($timesup > $now) {
6757: foreach my $res (@to_test) {
6758: if ($res->is_problem()) {
6759: if ($res->completable()) {
6760: unless (grep(/^\Q$block\E$/,@blockers)) {
6761: push(@blockers,$block);
6762: }
6763: last;
6764: }
6765: }
6766: }
6767: }
6768: }
6769: }
6770: }
6771: }
6772: }
6773: }
6774: }
6775: return @blockers;
6776: }
6777:
6778: sub check_docs_block {
6779: my ($docsblock,$tocheck) =@_;
6780: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6781: return;
6782: }
6783: if (ref($docsblock->{'maps'}) eq 'HASH') {
6784: if ($tocheck->{'maps'}) {
6785: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6786: return 1;
6787: }
6788: }
6789: }
6790: if (ref($docsblock->{'resources'}) eq 'HASH') {
6791: if ($tocheck->{'resources'}) {
6792: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6793: return 1;
6794: }
6795: }
6796: }
6797: return;
6798: }
6799:
6800: #
6801: # Removes the versino from a URI and
6802: # splits it in to its filename and path to the filename.
6803: # Seems like File::Basename could have done this more clearly.
6804: # Parameters:
6805: # $uri - input URI
6806: # Returns:
6807: # Two element list consisting of
6808: # $pathname - the URI up to and excluding the trailing /
6809: # $filename - The part of the URI following the last /
6810: # NOTE:
6811: # Another realization of this is simply:
6812: # use File::Basename;
6813: # ...
6814: # $uri = shift;
6815: # $filename = basename($uri);
6816: # $path = dirname($uri);
6817: # return ($filename, $path);
6818: #
6819: # The implementation below is probably faster however.
6820: #
6821: sub split_uri_for_cond {
6822: my $uri=&deversion(&declutter(shift));
6823: my @uriparts=split(/\//,$uri);
6824: my $filename=pop(@uriparts);
6825: my $pathname=join('/',@uriparts);
6826: return ($pathname,$filename);
6827: }
6828: # --------------------------------------------------- Is a resource on the map?
6829:
6830: sub is_on_map {
6831: my ($pathname,$filename) = &split_uri_for_cond(shift);
6832: #Trying to find the conditional for the file
6833: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6834: /\&\Q$filename\E\:([\d\|]+)\&/);
6835: if ($match) {
6836: return (1,$1);
6837: } else {
6838: return (0,0);
6839: }
6840: }
6841:
6842: # --------------------------------------------------------- Get symb from alias
6843:
6844: sub get_symb_from_alias {
6845: my $symb=shift;
6846: my ($map,$resid,$url)=&decode_symb($symb);
6847: # Already is a symb
6848: if ($url) { return $symb; }
6849: # Must be an alias
6850: my $aliassymb='';
6851: my %bighash;
6852: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6853: &GDBM_READER(),0640)) {
6854: my $rid=$bighash{'mapalias_'.$symb};
6855: if ($rid) {
6856: my ($mapid,$resid)=split(/\./,$rid);
6857: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6858: $resid,$bighash{'src_'.$rid});
6859: }
6860: untie %bighash;
6861: }
6862: return $aliassymb;
6863: }
6864:
6865: # ----------------------------------------------------------------- Define Role
6866:
6867: sub definerole {
6868: if (allowed('mcr','/')) {
6869: my ($rolename,$sysrole,$domrole,$courole)=@_;
6870: foreach my $role (split(':',$sysrole)) {
6871: my ($crole,$cqual)=split(/\&/,$role);
6872: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6873: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6874: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6875: return "refused:s:$crole&$cqual";
6876: }
6877: }
6878: }
6879: foreach my $role (split(':',$domrole)) {
6880: my ($crole,$cqual)=split(/\&/,$role);
6881: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6882: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6883: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6884: return "refused:d:$crole&$cqual";
6885: }
6886: }
6887: }
6888: foreach my $role (split(':',$courole)) {
6889: my ($crole,$cqual)=split(/\&/,$role);
6890: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6891: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6892: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6893: return "refused:c:$crole&$cqual";
6894: }
6895: }
6896: }
6897: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6898: "$env{'user.domain'}:$env{'user.name'}:".
6899: "rolesdef_$rolename=".
6900: escape($sysrole.'_'.$domrole.'_'.$courole);
6901: return reply($command,$env{'user.home'});
6902: } else {
6903: return 'refused';
6904: }
6905: }
6906:
6907: # ---------------- Make a metadata query against the network of library servers
6908:
6909: sub metadata_query {
6910: my ($query,$custom,$customshow,$server_array)=@_;
6911: my %rhash;
6912: my %libserv = &all_library();
6913: my @server_list = (defined($server_array) ? @$server_array
6914: : keys(%libserv) );
6915: for my $server (@server_list) {
6916: unless ($custom or $customshow) {
6917: my $reply=&reply("querysend:".&escape($query),$server);
6918: $rhash{$server}=$reply;
6919: }
6920: else {
6921: my $reply=&reply("querysend:".&escape($query).':'.
6922: &escape($custom).':'.&escape($customshow),
6923: $server);
6924: $rhash{$server}=$reply;
6925: }
6926: }
6927: return \%rhash;
6928: }
6929:
6930: # ----------------------------------------- Send log queries and wait for reply
6931:
6932: sub log_query {
6933: my ($uname,$udom,$query,%filters)=@_;
6934: my $uhome=&homeserver($uname,$udom);
6935: if ($uhome eq 'no_host') { return 'error: no_host'; }
6936: my $uhost=&hostname($uhome);
6937: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6938: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6939: $uhome);
6940: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6941: return get_query_reply($queryid);
6942: }
6943:
6944: # -------------------------- Update MySQL table for portfolio file
6945:
6946: sub update_portfolio_table {
6947: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6948: if ($group ne '') {
6949: $file_name =~s /^\Q$group\E//;
6950: }
6951: my $homeserver = &homeserver($uname,$udom);
6952: my $queryid=
6953: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6954: ':'.&escape($file_name).':'.$action,$homeserver);
6955: my $reply = &get_query_reply($queryid);
6956: return $reply;
6957: }
6958:
6959: # -------------------------- Update MySQL allusers table
6960:
6961: sub update_allusers_table {
6962: my ($uname,$udom,$names) = @_;
6963: my $homeserver = &homeserver($uname,$udom);
6964: my $queryid=
6965: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6966: 'lastname='.&escape($names->{'lastname'}).'%%'.
6967: 'firstname='.&escape($names->{'firstname'}).'%%'.
6968: 'middlename='.&escape($names->{'middlename'}).'%%'.
6969: 'generation='.&escape($names->{'generation'}).'%%'.
6970: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6971: 'id='.&escape($names->{'id'}),$homeserver);
6972: return;
6973: }
6974:
6975: # ------- Request retrieval of institutional classlists for course(s)
6976:
6977: sub fetch_enrollment_query {
6978: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6979: my $homeserver;
6980: my $maxtries = 1;
6981: if ($context eq 'automated') {
6982: $homeserver = $perlvar{'lonHostID'};
6983: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6984: } else {
6985: $homeserver = &homeserver($cnum,$dom);
6986: }
6987: my $host=&hostname($homeserver);
6988: my $cmd = '';
6989: foreach my $affiliate (keys(%{$affiliatesref})) {
6990: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6991: }
6992: $cmd =~ s/%%$//;
6993: $cmd = &escape($cmd);
6994: my $query = 'fetchenrollment';
6995: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6996: unless ($queryid=~/^\Q$host\E\_/) {
6997: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6998: return 'error: '.$queryid;
6999: }
7000: my $reply = &get_query_reply($queryid);
7001: my $tries = 1;
7002: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7003: $reply = &get_query_reply($queryid);
7004: $tries ++;
7005: }
7006: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7007: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7008: } else {
7009: my @responses = split(/:/,$reply);
7010: if ($homeserver eq $perlvar{'lonHostID'}) {
7011: foreach my $line (@responses) {
7012: my ($key,$value) = split(/=/,$line,2);
7013: $$replyref{$key} = $value;
7014: }
7015: } else {
7016: my $pathname = LONCAPA::tempdir();
7017: foreach my $line (@responses) {
7018: my ($key,$value) = split(/=/,$line);
7019: $$replyref{$key} = $value;
7020: if ($value > 0) {
7021: foreach my $item (@{$$affiliatesref{$key}}) {
7022: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7023: my $destname = $pathname.'/'.$filename;
7024: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7025: if ($xml_classlist =~ /^error/) {
7026: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7027: } else {
7028: if ( open(FILE,">$destname") ) {
7029: print FILE &unescape($xml_classlist);
7030: close(FILE);
7031: } else {
7032: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7033: }
7034: }
7035: }
7036: }
7037: }
7038: }
7039: return 'ok';
7040: }
7041: return 'error';
7042: }
7043:
7044: sub get_query_reply {
7045: my $queryid=shift;
7046: my $replyfile=LONCAPA::tempdir().$queryid;
7047: my $reply='';
7048: for (1..100) {
7049: sleep 2;
7050: if (-e $replyfile.'.end') {
7051: if (open(my $fh,$replyfile)) {
7052: $reply = join('',<$fh>);
7053: close($fh);
7054: } else { return 'error: reply_file_error'; }
7055: return &unescape($reply);
7056: }
7057: }
7058: return 'timeout:'.$queryid;
7059: }
7060:
7061: sub courselog_query {
7062: #
7063: # possible filters:
7064: # url: url or symb
7065: # username
7066: # domain
7067: # action: view, submit, grade
7068: # start: timestamp
7069: # end: timestamp
7070: #
7071: my (%filters)=@_;
7072: unless ($env{'request.course.id'}) { return 'no_course'; }
7073: if ($filters{'url'}) {
7074: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7075: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7076: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7077: }
7078: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7079: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7080: return &log_query($cname,$cdom,'courselog',%filters);
7081: }
7082:
7083: sub userlog_query {
7084: #
7085: # possible filters:
7086: # action: log check role
7087: # start: timestamp
7088: # end: timestamp
7089: #
7090: my ($uname,$udom,%filters)=@_;
7091: return &log_query($uname,$udom,'userlog',%filters);
7092: }
7093:
7094: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7095:
7096: sub auto_run {
7097: my ($cnum,$cdom) = @_;
7098: my $response = 0;
7099: my $settings;
7100: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7101: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7102: $settings = $domconfig{'autoenroll'};
7103: if ($settings->{'run'} eq '1') {
7104: $response = 1;
7105: }
7106: } else {
7107: my $homeserver;
7108: if (&is_course($cdom,$cnum)) {
7109: $homeserver = &homeserver($cnum,$cdom);
7110: } else {
7111: $homeserver = &domain($cdom,'primary');
7112: }
7113: if ($homeserver ne 'no_host') {
7114: $response = &reply('autorun:'.$cdom,$homeserver);
7115: }
7116: }
7117: return $response;
7118: }
7119:
7120: sub auto_get_sections {
7121: my ($cnum,$cdom,$inst_coursecode) = @_;
7122: my $homeserver;
7123: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7124: $homeserver = &homeserver($cnum,$cdom);
7125: }
7126: if (!defined($homeserver)) {
7127: if ($cdom =~ /^$match_domain$/) {
7128: $homeserver = &domain($cdom,'primary');
7129: }
7130: }
7131: my @secs;
7132: if (defined($homeserver)) {
7133: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7134: unless ($response eq 'refused') {
7135: @secs = split(/:/,$response);
7136: }
7137: }
7138: return @secs;
7139: }
7140:
7141: sub auto_new_course {
7142: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7143: my $homeserver = &homeserver($cnum,$cdom);
7144: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7145: return $response;
7146: }
7147:
7148: sub auto_validate_courseID {
7149: my ($cnum,$cdom,$inst_course_id) = @_;
7150: my $homeserver = &homeserver($cnum,$cdom);
7151: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7152: return $response;
7153: }
7154:
7155: sub auto_validate_instcode {
7156: my ($cnum,$cdom,$instcode,$owner) = @_;
7157: my ($homeserver,$response);
7158: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7159: $homeserver = &homeserver($cnum,$cdom);
7160: }
7161: if (!defined($homeserver)) {
7162: if ($cdom =~ /^$match_domain$/) {
7163: $homeserver = &domain($cdom,'primary');
7164: }
7165: }
7166: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7167: &escape($instcode).':'.&escape($owner),$homeserver));
7168: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
7169: return ($outcome,$description);
7170: }
7171:
7172: sub auto_create_password {
7173: my ($cnum,$cdom,$authparam,$udom) = @_;
7174: my ($homeserver,$response);
7175: my $create_passwd = 0;
7176: my $authchk = '';
7177: if ($udom =~ /^$match_domain$/) {
7178: $homeserver = &domain($udom,'primary');
7179: }
7180: if ($homeserver eq '') {
7181: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7182: $homeserver = &homeserver($cnum,$cdom);
7183: }
7184: }
7185: if ($homeserver eq '') {
7186: $authchk = 'nodomain';
7187: } else {
7188: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7189: if ($response eq 'refused') {
7190: $authchk = 'refused';
7191: } else {
7192: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7193: }
7194: }
7195: return ($authparam,$create_passwd,$authchk);
7196: }
7197:
7198: sub auto_photo_permission {
7199: my ($cnum,$cdom,$students) = @_;
7200: my $homeserver = &homeserver($cnum,$cdom);
7201: my ($outcome,$perm_reqd,$conditions) =
7202: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7203: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7204: return (undef,undef);
7205: }
7206: return ($outcome,$perm_reqd,$conditions);
7207: }
7208:
7209: sub auto_checkphotos {
7210: my ($uname,$udom,$pid) = @_;
7211: my $homeserver = &homeserver($uname,$udom);
7212: my ($result,$resulttype);
7213: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7214: &escape($uname).':'.&escape($pid),
7215: $homeserver));
7216: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7217: return (undef,undef);
7218: }
7219: if ($outcome) {
7220: ($result,$resulttype) = split(/:/,$outcome);
7221: }
7222: return ($result,$resulttype);
7223: }
7224:
7225: sub auto_photochoice {
7226: my ($cnum,$cdom) = @_;
7227: my $homeserver = &homeserver($cnum,$cdom);
7228: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7229: &escape($cdom),
7230: $homeserver)));
7231: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7232: return (undef,undef);
7233: }
7234: return ($update,$comment);
7235: }
7236:
7237: sub auto_photoupdate {
7238: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7239: my $homeserver = &homeserver($cnum,$dom);
7240: my $host=&hostname($homeserver);
7241: my $cmd = '';
7242: my $maxtries = 1;
7243: foreach my $affiliate (keys(%{$affiliatesref})) {
7244: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7245: }
7246: $cmd =~ s/%%$//;
7247: $cmd = &escape($cmd);
7248: my $query = 'institutionalphotos';
7249: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7250: unless ($queryid=~/^\Q$host\E\_/) {
7251: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7252: return 'error: '.$queryid;
7253: }
7254: my $reply = &get_query_reply($queryid);
7255: my $tries = 1;
7256: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7257: $reply = &get_query_reply($queryid);
7258: $tries ++;
7259: }
7260: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7261: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7262: } else {
7263: my @responses = split(/:/,$reply);
7264: my $outcome = shift(@responses);
7265: foreach my $item (@responses) {
7266: my ($key,$value) = split(/=/,$item);
7267: $$photo{$key} = $value;
7268: }
7269: return $outcome;
7270: }
7271: return 'error';
7272: }
7273:
7274: sub auto_instcode_format {
7275: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7276: $cat_order) = @_;
7277: my $courses = '';
7278: my @homeservers;
7279: if ($caller eq 'global') {
7280: my %servers = &get_servers($codedom,'library');
7281: foreach my $tryserver (keys(%servers)) {
7282: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7283: push(@homeservers,$tryserver);
7284: }
7285: }
7286: } elsif ($caller eq 'requests') {
7287: if ($codedom =~ /^$match_domain$/) {
7288: my $chome = &domain($codedom,'primary');
7289: unless ($chome eq 'no_host') {
7290: push(@homeservers,$chome);
7291: }
7292: }
7293: } else {
7294: push(@homeservers,&homeserver($caller,$codedom));
7295: }
7296: foreach my $code (keys(%{$instcodes})) {
7297: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7298: }
7299: chop($courses);
7300: my $ok_response = 0;
7301: my $response;
7302: while (@homeservers > 0 && $ok_response == 0) {
7303: my $server = shift(@homeservers);
7304: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7305: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7306: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7307: split(/:/,$response);
7308: %{$codes} = (%{$codes},&str2hash($codes_str));
7309: push(@{$codetitles},&str2array($codetitles_str));
7310: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7311: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7312: $ok_response = 1;
7313: }
7314: }
7315: if ($ok_response) {
7316: return 'ok';
7317: } else {
7318: return $response;
7319: }
7320: }
7321:
7322: sub auto_instcode_defaults {
7323: my ($domain,$returnhash,$code_order) = @_;
7324: my @homeservers;
7325:
7326: my %servers = &get_servers($domain,'library');
7327: foreach my $tryserver (keys(%servers)) {
7328: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7329: push(@homeservers,$tryserver);
7330: }
7331: }
7332:
7333: my $response;
7334: foreach my $server (@homeservers) {
7335: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7336: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7337:
7338: foreach my $pair (split(/\&/,$response)) {
7339: my ($name,$value)=split(/\=/,$pair);
7340: if ($name eq 'code_order') {
7341: @{$code_order} = split(/\&/,&unescape($value));
7342: } else {
7343: $returnhash->{&unescape($name)}=&unescape($value);
7344: }
7345: }
7346: return 'ok';
7347: }
7348:
7349: return $response;
7350: }
7351:
7352: sub auto_possible_instcodes {
7353: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7354: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7355: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7356: return;
7357: }
7358: my (@homeservers,$uhome);
7359: if (defined(&domain($domain,'primary'))) {
7360: $uhome=&domain($domain,'primary');
7361: push(@homeservers,&domain($domain,'primary'));
7362: } else {
7363: my %servers = &get_servers($domain,'library');
7364: foreach my $tryserver (keys(%servers)) {
7365: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7366: push(@homeservers,$tryserver);
7367: }
7368: }
7369: }
7370: my $response;
7371: foreach my $server (@homeservers) {
7372: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7373: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7374: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7375: split(':',$response);
7376: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7377: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7378: foreach my $item (split('&',$cat_title)) {
7379: my ($name,$value)=split('=',$item);
7380: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7381: }
7382: foreach my $item (split('&',$cat_order)) {
7383: my ($name,$value)=split('=',$item);
7384: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7385: }
7386: return 'ok';
7387: }
7388: return $response;
7389: }
7390:
7391: sub auto_courserequest_checks {
7392: my ($dom) = @_;
7393: my ($homeserver,%validations);
7394: if ($dom =~ /^$match_domain$/) {
7395: $homeserver = &domain($dom,'primary');
7396: }
7397: unless ($homeserver eq 'no_host') {
7398: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7399: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7400: my @items = split(/&/,$response);
7401: foreach my $item (@items) {
7402: my ($key,$value) = split('=',$item);
7403: $validations{&unescape($key)} = &thaw_unescape($value);
7404: }
7405: }
7406: }
7407: return %validations;
7408: }
7409:
7410: sub auto_courserequest_validation {
7411: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7412: my ($homeserver,$response);
7413: if ($dom =~ /^$match_domain$/) {
7414: $homeserver = &domain($dom,'primary');
7415: }
7416: unless ($homeserver eq 'no_host') {
7417:
7418: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7419: ':'.&escape($crstype).':'.&escape($inststatuslist).
7420: ':'.&escape($instcode).':'.&escape($instseclist),
7421: $homeserver));
7422: }
7423: return $response;
7424: }
7425:
7426: sub auto_validate_class_sec {
7427: my ($cdom,$cnum,$owners,$inst_class) = @_;
7428: my $homeserver = &homeserver($cnum,$cdom);
7429: my $ownerlist;
7430: if (ref($owners) eq 'ARRAY') {
7431: $ownerlist = join(',',@{$owners});
7432: } else {
7433: $ownerlist = $owners;
7434: }
7435: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7436: &escape($ownerlist).':'.$cdom,$homeserver);
7437: return $response;
7438: }
7439:
7440: # ------------------------------------------------------- Course Group routines
7441:
7442: sub get_coursegroups {
7443: my ($cdom,$cnum,$group,$namespace) = @_;
7444: return(&dump($namespace,$cdom,$cnum,$group));
7445: }
7446:
7447: sub modify_coursegroup {
7448: my ($cdom,$cnum,$groupsettings) = @_;
7449: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7450: }
7451:
7452: sub toggle_coursegroup_status {
7453: my ($cdom,$cnum,$group,$action) = @_;
7454: my ($from_namespace,$to_namespace);
7455: if ($action eq 'delete') {
7456: $from_namespace = 'coursegroups';
7457: $to_namespace = 'deleted_groups';
7458: } else {
7459: $from_namespace = 'deleted_groups';
7460: $to_namespace = 'coursegroups';
7461: }
7462: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7463: if (my $tmp = &error(%curr_group)) {
7464: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7465: return ('read error',$tmp);
7466: } else {
7467: my %savedsettings = %curr_group;
7468: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7469: my $deloutcome;
7470: if ($result eq 'ok') {
7471: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7472: } else {
7473: return ('write error',$result);
7474: }
7475: if ($deloutcome eq 'ok') {
7476: return 'ok';
7477: } else {
7478: return ('delete error',$deloutcome);
7479: }
7480: }
7481: }
7482:
7483: sub modify_group_roles {
7484: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7485: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7486: my $role = 'gr/'.&escape($userprivs);
7487: my ($uname,$udom) = split(/:/,$user);
7488: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7489: if ($result eq 'ok') {
7490: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7491: }
7492: return $result;
7493: }
7494:
7495: sub modify_coursegroup_membership {
7496: my ($cdom,$cnum,$membership) = @_;
7497: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7498: return $result;
7499: }
7500:
7501: sub get_active_groups {
7502: my ($udom,$uname,$cdom,$cnum) = @_;
7503: my $now = time;
7504: my %groups = ();
7505: foreach my $key (keys(%env)) {
7506: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7507: my ($start,$end) = split(/\./,$env{$key});
7508: if (($end!=0) && ($end<$now)) { next; }
7509: if (($start!=0) && ($start>$now)) { next; }
7510: if ($1 eq $cdom && $2 eq $cnum) {
7511: $groups{$3} = $env{$key} ;
7512: }
7513: }
7514: }
7515: return %groups;
7516: }
7517:
7518: sub get_group_membership {
7519: my ($cdom,$cnum,$group) = @_;
7520: return(&dump('groupmembership',$cdom,$cnum,$group));
7521: }
7522:
7523: sub get_users_groups {
7524: my ($udom,$uname,$courseid) = @_;
7525: my @usersgroups;
7526: my $cachetime=1800;
7527:
7528: my $hashid="$udom:$uname:$courseid";
7529: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7530: if (defined($cached)) {
7531: @usersgroups = split(/:/,$grouplist);
7532: } else {
7533: $grouplist = '';
7534: my $courseurl = &courseid_to_courseurl($courseid);
7535: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7536: my $access_end = $env{'course.'.$courseid.
7537: '.default_enrollment_end_date'};
7538: my $now = time;
7539: foreach my $key (keys(%roleshash)) {
7540: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7541: my $group = $1;
7542: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7543: my $start = $2;
7544: my $end = $1;
7545: if ($start == -1) { next; } # deleted from group
7546: if (($start!=0) && ($start>$now)) { next; }
7547: if (($end!=0) && ($end<$now)) {
7548: if ($access_end && $access_end < $now) {
7549: if ($access_end - $end < 86400) {
7550: push(@usersgroups,$group);
7551: }
7552: }
7553: next;
7554: }
7555: push(@usersgroups,$group);
7556: }
7557: }
7558: }
7559: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7560: $grouplist = join(':',@usersgroups);
7561: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7562: }
7563: return @usersgroups;
7564: }
7565:
7566: sub devalidate_getgroups_cache {
7567: my ($udom,$uname,$cdom,$cnum)=@_;
7568: my $courseid = $cdom.'_'.$cnum;
7569:
7570: my $hashid="$udom:$uname:$courseid";
7571: &devalidate_cache_new('getgroups',$hashid);
7572: }
7573:
7574: # ------------------------------------------------------------------ Plain Text
7575:
7576: sub plaintext {
7577: my ($short,$type,$cid,$forcedefault) = @_;
7578: if ($short =~ m{^cr/}) {
7579: return (split('/',$short))[-1];
7580: }
7581: if (!defined($cid)) {
7582: $cid = $env{'request.course.id'};
7583: }
7584: my %rolenames = (
7585: Course => 'std',
7586: Community => 'alt1',
7587: );
7588: if ($cid ne '') {
7589: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7590: unless ($forcedefault) {
7591: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7592: &Apache::lonlocal::mt_escape(\$roletext);
7593: return &Apache::lonlocal::mt($roletext);
7594: }
7595: }
7596: }
7597: if ((defined($type)) && (defined($rolenames{$type})) &&
7598: (defined($rolenames{$type})) &&
7599: (defined($prp{$short}{$rolenames{$type}}))) {
7600: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7601: } elsif ($cid ne '') {
7602: my $crstype = $env{'course.'.$cid.'.type'};
7603: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7604: (defined($prp{$short}{$rolenames{$crstype}}))) {
7605: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7606: }
7607: }
7608: return &Apache::lonlocal::mt($prp{$short}{'std'});
7609: }
7610:
7611: # ----------------------------------------------------------------- Assign Role
7612:
7613: sub assignrole {
7614: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7615: $context)=@_;
7616: my $mrole;
7617: if ($role =~ /^cr\//) {
7618: my $cwosec=$url;
7619: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7620: unless (&allowed('ccr',$cwosec)) {
7621: my $refused = 1;
7622: if ($context eq 'requestcourses') {
7623: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7624: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7625: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7626: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7627: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7628: if ($crsenv{'internal.courseowner'} eq
7629: $env{'user.name'}.':'.$env{'user.domain'}) {
7630: $refused = '';
7631: }
7632: }
7633: }
7634: }
7635: }
7636: if ($refused) {
7637: &logthis('Refused custom assignrole: '.
7638: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7639: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7640: return 'refused';
7641: }
7642: }
7643: $mrole='cr';
7644: } elsif ($role =~ /^gr\//) {
7645: my $cwogrp=$url;
7646: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7647: unless (&allowed('mdg',$cwogrp)) {
7648: &logthis('Refused group assignrole: '.
7649: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7650: $env{'user.name'}.' at '.$env{'user.domain'});
7651: return 'refused';
7652: }
7653: $mrole='gr';
7654: } else {
7655: my $cwosec=$url;
7656: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7657: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7658: my $refused;
7659: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7660: if (!(&allowed('c'.$role,$url))) {
7661: $refused = 1;
7662: }
7663: } else {
7664: $refused = 1;
7665: }
7666: if ($refused) {
7667: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7668: if (!$selfenroll && $context eq 'course') {
7669: my %crsenv;
7670: if ($role eq 'cc' || $role eq 'co') {
7671: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7672: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7673: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7674: if ($crsenv{'internal.courseowner'} eq
7675: $env{'user.name'}.':'.$env{'user.domain'}) {
7676: $refused = '';
7677: }
7678: }
7679: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7680: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7681: if ($crsenv{'internal.courseowner'} eq
7682: $env{'user.name'}.':'.$env{'user.domain'}) {
7683: $refused = '';
7684: }
7685: }
7686: }
7687: }
7688: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7689: $refused = '';
7690: } elsif ($context eq 'requestcourses') {
7691: my @possroles = ('st','ta','ep','in','cc','co');
7692: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7693: my $wrongcc;
7694: if ($cnum =~ /^$match_community$/) {
7695: $wrongcc = 1 if ($role eq 'cc');
7696: } else {
7697: $wrongcc = 1 if ($role eq 'co');
7698: }
7699: unless ($wrongcc) {
7700: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7701: if ($crsenv{'internal.courseowner'} eq
7702: $env{'user.name'}.':'.$env{'user.domain'}) {
7703: $refused = '';
7704: }
7705: }
7706: }
7707: } elsif ($context eq 'requestauthor') {
7708: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7709: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
7710: if ($env{'environment.requestauthor'} eq 'automatic') {
7711: $refused = '';
7712: } else {
7713: my %domdefaults = &get_domain_defaults($udom);
7714: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
7715: my $checkbystatus;
7716: if ($env{'user.adv'}) {
7717: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
7718: if ($disposition eq 'automatic') {
7719: $refused = '';
7720: } elsif ($disposition eq '') {
7721: $checkbystatus = 1;
7722: }
7723: } else {
7724: $checkbystatus = 1;
7725: }
7726: if ($checkbystatus) {
7727: if ($env{'environment.inststatus'}) {
7728: my @inststatuses = split(/,/,$env{'environment.inststatus'});
7729: foreach my $type (@inststatuses) {
7730: if (($type ne '') &&
7731: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
7732: $refused = '';
7733: }
7734: }
7735: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
7736: $refused = '';
7737: }
7738: }
7739: }
7740: }
7741: }
7742: }
7743: if ($refused) {
7744: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7745: ' '.$role.' '.$end.' '.$start.' by '.
7746: $env{'user.name'}.' at '.$env{'user.domain'});
7747: return 'refused';
7748: }
7749: }
7750: } elsif ($role eq 'au') {
7751: if ($url ne '/'.$udom.'/') {
7752: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7753: ' to assign author role for '.$uname.':'.$udom.
7754: ' in domain: '.$url.' refused (wrong domain).');
7755: return 'refused';
7756: }
7757: }
7758: $mrole=$role;
7759: }
7760: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7761: "$udom:$uname:$url".'_'."$mrole=$role";
7762: if ($end) { $command.='_'.$end; }
7763: if ($start) {
7764: if ($end) {
7765: $command.='_'.$start;
7766: } else {
7767: $command.='_0_'.$start;
7768: }
7769: }
7770: my $origstart = $start;
7771: my $origend = $end;
7772: my $delflag;
7773: # actually delete
7774: if ($deleteflag) {
7775: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7776: # modify command to delete the role
7777: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7778: "$udom:$uname:$url".'_'."$mrole";
7779: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7780: # set start and finish to negative values for userrolelog
7781: $start=-1;
7782: $end=-1;
7783: $delflag = 1;
7784: }
7785: }
7786: # send command
7787: my $answer=&reply($command,&homeserver($uname,$udom));
7788: # log new user role if status is ok
7789: if ($answer eq 'ok') {
7790: &userrolelog($role,$uname,$udom,$url,$start,$end);
7791: # for course roles, perform group memberships changes triggered by role change.
7792: unless ($role =~ /^gr/) {
7793: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7794: $origstart,$selfenroll,$context);
7795: }
7796: if (($role eq 'cc') || ($role eq 'in') ||
7797: ($role eq 'ep') || ($role eq 'ad') ||
7798: ($role eq 'ta') || ($role eq 'st') ||
7799: ($role=~/^cr/) || ($role eq 'gr') ||
7800: ($role eq 'co')) {
7801: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7802: $selfenroll,$context);
7803: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
7804: ($role eq 'au') || ($role eq 'dc')) {
7805: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7806: $context);
7807: } elsif (($role eq 'ca') || ($role eq 'aa')) {
7808: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7809: $context);
7810: }
7811: if ($role eq 'cc') {
7812: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7813: }
7814: }
7815: return $answer;
7816: }
7817:
7818: sub autoupdate_coowners {
7819: my ($url,$end,$start,$uname,$udom) = @_;
7820: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7821: if (($cdom ne '') && ($cnum ne '')) {
7822: my $now = time;
7823: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7824: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7825: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7826: my $instcode = $coursehash{'internal.coursecode'};
7827: if ($instcode ne '') {
7828: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7829: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7830: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7831: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7832: if ($result eq 'valid') {
7833: if ($coursehash{'internal.co-owners'}) {
7834: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7835: push(@newcoowners,$coowner);
7836: }
7837: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7838: push(@newcoowners,$uname.':'.$udom);
7839: }
7840: @newcoowners = sort(@newcoowners);
7841: } else {
7842: push(@newcoowners,$uname.':'.$udom);
7843: }
7844: } else {
7845: if ($coursehash{'internal.co-owners'}) {
7846: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7847: unless ($coowner eq $uname.':'.$udom) {
7848: push(@newcoowners,$coowner);
7849: }
7850: }
7851: unless (@newcoowners > 0) {
7852: $delcoowners = 1;
7853: $coowners = '';
7854: }
7855: }
7856: }
7857: if (@newcoowners || $delcoowners) {
7858: &store_coowners($cdom,$cnum,$coursehash{'home'},
7859: $delcoowners,@newcoowners);
7860: }
7861: }
7862: }
7863: }
7864: }
7865: }
7866: }
7867:
7868: sub store_coowners {
7869: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
7870: my $cid = $cdom.'_'.$cnum;
7871: my ($coowners,$delresult,$putresult);
7872: if (@newcoowners) {
7873: $coowners = join(',',@newcoowners);
7874: my %coownershash = (
7875: 'internal.co-owners' => $coowners,
7876: );
7877: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
7878: if ($putresult eq 'ok') {
7879: if ($env{'course.'.$cid.'.num'} eq $cnum) {
7880: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
7881: }
7882: }
7883: }
7884: if ($delcoowners) {
7885: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
7886: if ($delresult eq 'ok') {
7887: if ($env{'course.'.$cid.'.internal.co-owners'}) {
7888: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
7889: }
7890: }
7891: }
7892: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
7893: my %crsinfo =
7894: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
7895: if (ref($crsinfo{$cid}) eq 'HASH') {
7896: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
7897: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
7898: }
7899: }
7900: }
7901:
7902: # -------------------------------------------------- Modify user authentication
7903: # Overrides without validation
7904:
7905: sub modifyuserauth {
7906: my ($udom,$uname,$umode,$upass)=@_;
7907: my $uhome=&homeserver($uname,$udom);
7908: unless (&allowed('mau',$udom)) { return 'refused'; }
7909: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
7910: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7911: ' in domain '.$env{'request.role.domain'});
7912: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7913: &escape($upass),$uhome);
7914: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7915: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7916: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7917: &log($udom,,$uname,$uhome,
7918: 'Authentication changed by '.$env{'user.domain'}.', '.
7919: $env{'user.name'}.', '.$umode.
7920: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7921: unless ($reply eq 'ok') {
7922: &logthis('Authentication mode error: '.$reply);
7923: return 'error: '.$reply;
7924: }
7925: return 'ok';
7926: }
7927:
7928: # --------------------------------------------------------------- Modify a user
7929:
7930: sub modifyuser {
7931: my ($udom, $uname, $uid,
7932: $umode, $upass, $first,
7933: $middle, $last, $gene,
7934: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7935: $udom= &LONCAPA::clean_domain($udom);
7936: $uname=&LONCAPA::clean_username($uname);
7937: my $showcandelete = 'none';
7938: if (ref($candelete) eq 'ARRAY') {
7939: if (@{$candelete} > 0) {
7940: $showcandelete = join(', ',@{$candelete});
7941: }
7942: }
7943: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7944: $umode.', '.$first.', '.$middle.', '.
7945: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7946: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7947: ' desiredhome not specified').
7948: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7949: ' in domain '.$env{'request.role.domain'});
7950: my $uhome=&homeserver($uname,$udom,'true');
7951: my $newuser;
7952: if ($uhome eq 'no_host') {
7953: $newuser = 1;
7954: }
7955: # ----------------------------------------------------------------- Create User
7956: if (($uhome eq 'no_host') &&
7957: (($umode && $upass) || ($umode eq 'localauth'))) {
7958: my $unhome='';
7959: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7960: $unhome = $desiredhome;
7961: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7962: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7963: } else { # load balancing routine for determining $unhome
7964: my $loadm=10000000;
7965: my %servers = &get_servers($udom,'library');
7966: foreach my $tryserver (keys(%servers)) {
7967: my $answer=reply('load',$tryserver);
7968: if (($answer=~/\d+/) && ($answer<$loadm)) {
7969: $loadm=$answer;
7970: $unhome=$tryserver;
7971: }
7972: }
7973: }
7974: if (($unhome eq '') || ($unhome eq 'no_host')) {
7975: return 'error: unable to find a home server for '.$uname.
7976: ' in domain '.$udom;
7977: }
7978: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7979: &escape($upass),$unhome);
7980: unless ($reply eq 'ok') {
7981: return 'error: '.$reply;
7982: }
7983: $uhome=&homeserver($uname,$udom,'true');
7984: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7985: return 'error: unable verify users home machine.';
7986: }
7987: } # End of creation of new user
7988: # ---------------------------------------------------------------------- Add ID
7989: if ($uid) {
7990: $uid=~tr/A-Z/a-z/;
7991: my %uidhash=&idrget($udom,$uname);
7992: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7993: && (!$forceid)) {
7994: unless ($uid eq $uidhash{$uname}) {
7995: return 'error: user id "'.$uid.'" does not match '.
7996: 'current user id "'.$uidhash{$uname}.'".';
7997: }
7998: } else {
7999: &idput($udom,($uname => $uid));
8000: }
8001: }
8002: # -------------------------------------------------------------- Add names, etc
8003: my @tmp=&get('environment',
8004: ['firstname','middlename','lastname','generation','id',
8005: 'permanentemail','inststatus'],
8006: $udom,$uname);
8007: my (%names,%oldnames);
8008: if ($tmp[0] =~ m/^error:.*/) {
8009: %names=();
8010: } else {
8011: %names = @tmp;
8012: %oldnames = %names;
8013: }
8014: #
8015: # If name, email and/or uid are blank (e.g., because an uploaded file
8016: # of users did not contain them), do not overwrite existing values
8017: # unless field is in $candelete array ref.
8018: #
8019:
8020: my @fields = ('firstname','middlename','lastname','generation',
8021: 'permanentemail','id');
8022: my %newvalues;
8023: if (ref($candelete) eq 'ARRAY') {
8024: foreach my $field (@fields) {
8025: if (grep(/^\Q$field\E$/,@{$candelete})) {
8026: if ($field eq 'firstname') {
8027: $names{$field} = $first;
8028: } elsif ($field eq 'middlename') {
8029: $names{$field} = $middle;
8030: } elsif ($field eq 'lastname') {
8031: $names{$field} = $last;
8032: } elsif ($field eq 'generation') {
8033: $names{$field} = $gene;
8034: } elsif ($field eq 'permanentemail') {
8035: $names{$field} = $email;
8036: } elsif ($field eq 'id') {
8037: $names{$field} = $uid;
8038: }
8039: }
8040: }
8041: }
8042: if ($first) { $names{'firstname'} = $first; }
8043: if (defined($middle)) { $names{'middlename'} = $middle; }
8044: if ($last) { $names{'lastname'} = $last; }
8045: if (defined($gene)) { $names{'generation'} = $gene; }
8046: if ($email) {
8047: $email=~s/[^\w\@\.\-\,]//gs;
8048: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8049: }
8050: if ($uid) { $names{'id'} = $uid; }
8051: if (defined($inststatus)) {
8052: $names{'inststatus'} = '';
8053: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8054: if (ref($usertypes) eq 'HASH') {
8055: my @okstatuses;
8056: foreach my $item (split(/:/,$inststatus)) {
8057: if (defined($usertypes->{$item})) {
8058: push(@okstatuses,$item);
8059: }
8060: }
8061: if (@okstatuses) {
8062: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8063: }
8064: }
8065: }
8066: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8067: $umode.', '.$first.', '.$middle.', '.
8068: $last.', '.$gene.', '.$email.', '.$inststatus;
8069: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8070: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8071: } else {
8072: $logmsg .= ' during self creation';
8073: }
8074: my $changed;
8075: if ($newuser) {
8076: $changed = 1;
8077: } else {
8078: foreach my $field (@fields) {
8079: if ($names{$field} ne $oldnames{$field}) {
8080: $changed = 1;
8081: last;
8082: }
8083: }
8084: }
8085: unless ($changed) {
8086: $logmsg = 'No changes in user information needed for: '.$logmsg;
8087: &logthis($logmsg);
8088: return 'ok';
8089: }
8090: my $reply = &put('environment', \%names, $udom,$uname);
8091: if ($reply ne 'ok') {
8092: return 'error: '.$reply;
8093: }
8094: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8095: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8096: }
8097: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8098: &devalidate_cache_new('namescache',$uname.':'.$udom);
8099: $logmsg = 'Success modifying user '.$logmsg;
8100: &logthis($logmsg);
8101: return 'ok';
8102: }
8103:
8104: # -------------------------------------------------------------- Modify student
8105:
8106: sub modifystudent {
8107: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8108: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8109: $selfenroll,$context,$inststatus)=@_;
8110: if (!$cid) {
8111: unless ($cid=$env{'request.course.id'}) {
8112: return 'not_in_class';
8113: }
8114: }
8115: # --------------------------------------------------------------- Make the user
8116: my $reply=&modifyuser
8117: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8118: $desiredhome,$email,$inststatus);
8119: unless ($reply eq 'ok') { return $reply; }
8120: # This will cause &modify_student_enrollment to get the uid from the
8121: # students environment
8122: $uid = undef if (!$forceid);
8123: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8124: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
8125: return $reply;
8126: }
8127:
8128: sub modify_student_enrollment {
8129: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
8130: my ($cdom,$cnum,$chome);
8131: if (!$cid) {
8132: unless ($cid=$env{'request.course.id'}) {
8133: return 'not_in_class';
8134: }
8135: $cdom=$env{'course.'.$cid.'.domain'};
8136: $cnum=$env{'course.'.$cid.'.num'};
8137: } else {
8138: ($cdom,$cnum)=split(/_/,$cid);
8139: }
8140: $chome=$env{'course.'.$cid.'.home'};
8141: if (!$chome) {
8142: $chome=&homeserver($cnum,$cdom);
8143: }
8144: if (!$chome) { return 'unknown_course'; }
8145: # Make sure the user exists
8146: my $uhome=&homeserver($uname,$udom);
8147: if (($uhome eq '') || ($uhome eq 'no_host')) {
8148: return 'error: no such user';
8149: }
8150: # Get student data if we were not given enough information
8151: if (!defined($first) || $first eq '' ||
8152: !defined($last) || $last eq '' ||
8153: !defined($uid) || $uid eq '' ||
8154: !defined($middle) || $middle eq '' ||
8155: !defined($gene) || $gene eq '') {
8156: # They did not supply us with enough data to enroll the student, so
8157: # we need to pick up more information.
8158: my %tmp = &get('environment',
8159: ['firstname','middlename','lastname', 'generation','id']
8160: ,$udom,$uname);
8161:
8162: #foreach my $key (keys(%tmp)) {
8163: # &logthis("key $key = ".$tmp{$key});
8164: #}
8165: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8166: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8167: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8168: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8169: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8170: }
8171: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8172: my $user = "$uname:$udom";
8173: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8174: my $reply=cput('classlist',
8175: {$user =>
8176: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
8177: $cdom,$cnum);
8178: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8179: &devalidate_getsection_cache($udom,$uname,$cid);
8180: } else {
8181: return 'error: '.$reply;
8182: }
8183: # Add student role to user
8184: my $uurl='/'.$cid;
8185: $uurl=~s/\_/\//g;
8186: if ($usec) {
8187: $uurl.='/'.$usec;
8188: }
8189: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8190: $selfenroll,$context);
8191: if ($result ne 'ok') {
8192: if ($old_entry{$user} ne '') {
8193: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8194: } else {
8195: $reply = &del('classlist',[$user],$cdom,$cnum);
8196: }
8197: }
8198: return $result;
8199: }
8200:
8201: sub format_name {
8202: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8203: my $name;
8204: if ($first ne 'lastname') {
8205: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8206: } else {
8207: if ($lastname=~/\S/) {
8208: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8209: $name=~s/\s+,/,/;
8210: } else {
8211: $name.= $firstname.' '.$middlename.' '.$generation;
8212: }
8213: }
8214: $name=~s/^\s+//;
8215: $name=~s/\s+$//;
8216: $name=~s/\s+/ /g;
8217: return $name;
8218: }
8219:
8220: # ------------------------------------------------- Write to course preferences
8221:
8222: sub writecoursepref {
8223: my ($courseid,%prefs)=@_;
8224: $courseid=~s/^\///;
8225: $courseid=~s/\_/\//g;
8226: my ($cdomain,$cnum)=split(/\//,$courseid);
8227: my $chome=homeserver($cnum,$cdomain);
8228: if (($chome eq '') || ($chome eq 'no_host')) {
8229: return 'error: no such course';
8230: }
8231: my $cstring='';
8232: foreach my $pref (keys(%prefs)) {
8233: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8234: }
8235: $cstring=~s/\&$//;
8236: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8237: }
8238:
8239: # ---------------------------------------------------------- Make/modify course
8240:
8241: sub createcourse {
8242: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8243: $course_owner,$crstype,$cnum,$context,$category)=@_;
8244: $url=&declutter($url);
8245: my $cid='';
8246: if ($context eq 'requestcourses') {
8247: my $can_create = 0;
8248: my ($ownername,$ownerdom) = split(':',$course_owner);
8249: if ($udom eq $ownerdom) {
8250: if (&usertools_access($ownername,$ownerdom,$category,undef,
8251: $context)) {
8252: $can_create = 1;
8253: }
8254: } else {
8255: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8256: $category);
8257: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8258: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8259: if (@curr > 0) {
8260: my @options = qw(approval validate autolimit);
8261: my $optregex = join('|',@options);
8262: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8263: $can_create = 1;
8264: }
8265: }
8266: }
8267: }
8268: if ($can_create) {
8269: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8270: unless (&allowed('ccc',$udom)) {
8271: return 'refused';
8272: }
8273: }
8274: } else {
8275: return 'refused';
8276: }
8277: } elsif (!&allowed('ccc',$udom)) {
8278: return 'refused';
8279: }
8280: # --------------------------------------------------------------- Get Unique ID
8281: my $uname;
8282: if ($cnum =~ /^$match_courseid$/) {
8283: my $chome=&homeserver($cnum,$udom,'true');
8284: if (($chome eq '') || ($chome eq 'no_host')) {
8285: $uname = $cnum;
8286: } else {
8287: $uname = &generate_coursenum($udom,$crstype);
8288: }
8289: } else {
8290: $uname = &generate_coursenum($udom,$crstype);
8291: }
8292: return $uname if ($uname =~ /^error/);
8293: # -------------------------------------------------- Check supplied server name
8294: if (!defined($course_server)) {
8295: if (defined(&domain($udom,'primary'))) {
8296: $course_server = &domain($udom,'primary');
8297: } else {
8298: $course_server = $env{'user.home'};
8299: }
8300: }
8301: my %host_servers =
8302: &Apache::lonnet::get_servers($udom,'library');
8303: unless ($host_servers{$course_server}) {
8304: return 'error: invalid home server for course: '.$course_server;
8305: }
8306: # ------------------------------------------------------------- Make the course
8307: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8308: $course_server);
8309: unless ($reply eq 'ok') { return 'error: '.$reply; }
8310: my $uhome=&homeserver($uname,$udom,'true');
8311: if (($uhome eq '') || ($uhome eq 'no_host')) {
8312: return 'error: no such course';
8313: }
8314: # ----------------------------------------------------------------- Course made
8315: # log existence
8316: my $now = time;
8317: my $newcourse = {
8318: $udom.'_'.$uname => {
8319: description => $description,
8320: inst_code => $inst_code,
8321: owner => $course_owner,
8322: type => $crstype,
8323: creator => $env{'user.name'}.':'.
8324: $env{'user.domain'},
8325: created => $now,
8326: context => $context,
8327: },
8328: };
8329: &courseidput($udom,$newcourse,$uhome,'notime');
8330: # set toplevel url
8331: my $topurl=$url;
8332: unless ($nonstandard) {
8333: # ------------------------------------------ For standard courses, make top url
8334: my $mapurl=&clutter($url);
8335: if ($mapurl eq '/res/') { $mapurl=''; }
8336: $env{'form.initmap'}=(<<ENDINITMAP);
8337: <map>
8338: <resource id="1" type="start"></resource>
8339: <resource id="2" src="$mapurl"></resource>
8340: <resource id="3" type="finish"></resource>
8341: <link index="1" from="1" to="2"></link>
8342: <link index="2" from="2" to="3"></link>
8343: </map>
8344: ENDINITMAP
8345: $topurl=&declutter(
8346: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8347: );
8348: }
8349: # ----------------------------------------------------------- Write preferences
8350: &writecoursepref($udom.'_'.$uname,
8351: ('description' => $description,
8352: 'url' => $topurl,
8353: 'internal.creator' => $env{'user.name'}.':'.
8354: $env{'user.domain'},
8355: 'internal.created' => $now,
8356: 'internal.creationcontext' => $context)
8357: );
8358: return '/'.$udom.'/'.$uname;
8359: }
8360:
8361: # ------------------------------------------------------------------- Create ID
8362: sub generate_coursenum {
8363: my ($udom,$crstype) = @_;
8364: my $domdesc = &domain($udom);
8365: return 'error: invalid domain' if ($domdesc eq '');
8366: my $first;
8367: if ($crstype eq 'Community') {
8368: $first = '0';
8369: } else {
8370: $first = int(1+rand(9));
8371: }
8372: my $uname=$first.
8373: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8374: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8375: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8376: # ----------------------------------------------- Make sure that does not exist
8377: my $uhome=&homeserver($uname,$udom,'true');
8378: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8379: if ($crstype eq 'Community') {
8380: $first = '0';
8381: } else {
8382: $first = int(1+rand(9));
8383: }
8384: $uname=$first.
8385: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8386: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8387: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8388: $uhome=&homeserver($uname,$udom,'true');
8389: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8390: return 'error: unable to generate unique course-ID';
8391: }
8392: }
8393: return $uname;
8394: }
8395:
8396: sub is_course {
8397: my ($cdom, $cnum) = scalar(@_) == 1 ?
8398: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8399:
8400: return unless $cdom and $cnum;
8401:
8402: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8403: '.');
8404:
8405: return unless exists($courses{$cdom.'_'.$cnum});
8406: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8407: }
8408:
8409: sub store_userdata {
8410: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8411: my $result;
8412: if ($datakey ne '') {
8413: if (ref($storehash) eq 'HASH') {
8414: if ($udom eq '' || $uname eq '') {
8415: $udom = $env{'user.domain'};
8416: $uname = $env{'user.name'};
8417: }
8418: my $uhome=&homeserver($uname,$udom);
8419: if (($uhome eq '') || ($uhome eq 'no_host')) {
8420: $result = 'error: no_host';
8421: } else {
8422: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8423: $storehash->{'host'} = $perlvar{'lonHostID'};
8424:
8425: my $namevalue='';
8426: foreach my $key (keys(%{$storehash})) {
8427: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8428: }
8429: $namevalue=~s/\&$//;
8430: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8431: $namevalue,$uhome);
8432: }
8433: } else {
8434: $result = 'error: data to store was not a hash reference';
8435: }
8436: } else {
8437: $result= 'error: invalid requestkey';
8438: }
8439: return $result;
8440: }
8441:
8442: # ---------------------------------------------------------- Assign Custom Role
8443:
8444: sub assigncustomrole {
8445: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8446: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8447: $end,$start,$deleteflag,$selfenroll,$context);
8448: }
8449:
8450: # ----------------------------------------------------------------- Revoke Role
8451:
8452: sub revokerole {
8453: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8454: my $now=time;
8455: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8456: }
8457:
8458: # ---------------------------------------------------------- Revoke Custom Role
8459:
8460: sub revokecustomrole {
8461: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8462: my $now=time;
8463: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8464: $deleteflag,$selfenroll,$context);
8465: }
8466:
8467: # ------------------------------------------------------------ Disk usage
8468: sub diskusage {
8469: my ($udom,$uname,$directorypath,$getpropath)=@_;
8470: $directorypath =~ s/\/$//;
8471: my $listing=&reply('du2:'.&escape($directorypath).':'
8472: .&escape($getpropath).':'.&escape($uname).':'
8473: .&escape($udom),homeserver($uname,$udom));
8474: if ($listing eq 'unknown_cmd') {
8475: if ($getpropath) {
8476: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8477: }
8478: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8479: }
8480: return $listing;
8481: }
8482:
8483: sub is_locked {
8484: my ($file_name, $domain, $user, $which) = @_;
8485: my @check;
8486: my $is_locked;
8487: push (@check,$file_name);
8488: my %locked = &get('file_permissions',\@check,
8489: $env{'user.domain'},$env{'user.name'});
8490: my ($tmp)=keys(%locked);
8491: if ($tmp=~/^error:/) { undef(%locked); }
8492:
8493: if (ref($locked{$file_name}) eq 'ARRAY') {
8494: $is_locked = 'false';
8495: foreach my $entry (@{$locked{$file_name}}) {
8496: if (ref($entry) eq 'ARRAY') {
8497: $is_locked = 'true';
8498: if (ref($which) eq 'ARRAY') {
8499: push(@{$which},$entry);
8500: } else {
8501: last;
8502: }
8503: }
8504: }
8505: } else {
8506: $is_locked = 'false';
8507: }
8508: return $is_locked;
8509: }
8510:
8511: sub declutter_portfile {
8512: my ($file) = @_;
8513: $file =~ s{^(/portfolio/|portfolio/)}{/};
8514: return $file;
8515: }
8516:
8517: # ------------------------------------------------------------- Mark as Read Only
8518:
8519: sub mark_as_readonly {
8520: my ($domain,$user,$files,$what) = @_;
8521: my %current_permissions = &dump('file_permissions',$domain,$user);
8522: my ($tmp)=keys(%current_permissions);
8523: if ($tmp=~/^error:/) { undef(%current_permissions); }
8524: foreach my $file (@{$files}) {
8525: $file = &declutter_portfile($file);
8526: push(@{$current_permissions{$file}},$what);
8527: }
8528: &put('file_permissions',\%current_permissions,$domain,$user);
8529: return;
8530: }
8531:
8532: # ------------------------------------------------------------Save Selected Files
8533:
8534: sub save_selected_files {
8535: my ($user, $path, @files) = @_;
8536: my $filename = $user."savedfiles";
8537: my @other_files = &files_not_in_path($user, $path);
8538: open (OUT, '>'.$tmpdir.$filename);
8539: foreach my $file (@files) {
8540: print (OUT $env{'form.currentpath'}.$file."\n");
8541: }
8542: foreach my $file (@other_files) {
8543: print (OUT $file."\n");
8544: }
8545: close (OUT);
8546: return 'ok';
8547: }
8548:
8549: sub clear_selected_files {
8550: my ($user) = @_;
8551: my $filename = $user."savedfiles";
8552: open (OUT, '>'.LONCAPA::tempdir().$filename);
8553: print (OUT undef);
8554: close (OUT);
8555: return ("ok");
8556: }
8557:
8558: sub files_in_path {
8559: my ($user, $path) = @_;
8560: my $filename = $user."savedfiles";
8561: my %return_files;
8562: open (IN, '<'.LONCAPA::tempdir().$filename);
8563: while (my $line_in = <IN>) {
8564: chomp ($line_in);
8565: my @paths_and_file = split (m!/!, $line_in);
8566: my $file_part = pop (@paths_and_file);
8567: my $path_part = join ('/', @paths_and_file);
8568: $path_part.='/';
8569: my $path_and_file = $path_part.$file_part;
8570: if ($path_part eq $path) {
8571: $return_files{$file_part}= 'selected';
8572: }
8573: }
8574: close (IN);
8575: return (\%return_files);
8576: }
8577:
8578: # called in portfolio select mode, to show files selected NOT in current directory
8579: sub files_not_in_path {
8580: my ($user, $path) = @_;
8581: my $filename = $user."savedfiles";
8582: my @return_files;
8583: my $path_part;
8584: open(IN, '<'.LONCAPA::.$filename);
8585: while (my $line = <IN>) {
8586: #ok, I know it's clunky, but I want it to work
8587: my @paths_and_file = split(m|/|, $line);
8588: my $file_part = pop(@paths_and_file);
8589: chomp($file_part);
8590: my $path_part = join('/', @paths_and_file);
8591: $path_part .= '/';
8592: my $path_and_file = $path_part.$file_part;
8593: if ($path_part ne $path) {
8594: push(@return_files, ($path_and_file));
8595: }
8596: }
8597: close(OUT);
8598: return (@return_files);
8599: }
8600:
8601: #----------------------------------------------Get portfolio file permissions
8602:
8603: sub get_portfile_permissions {
8604: my ($domain,$user) = @_;
8605: my %current_permissions = &dump('file_permissions',$domain,$user);
8606: my ($tmp)=keys(%current_permissions);
8607: if ($tmp=~/^error:/) { undef(%current_permissions); }
8608: return \%current_permissions;
8609: }
8610:
8611: #---------------------------------------------Get portfolio file access controls
8612:
8613: sub get_access_controls {
8614: my ($current_permissions,$group,$file) = @_;
8615: my %access;
8616: my $real_file = $file;
8617: $file =~ s/\.meta$//;
8618: if (defined($file)) {
8619: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8620: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8621: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8622: }
8623: }
8624: } else {
8625: foreach my $key (keys(%{$current_permissions})) {
8626: if ($key =~ /\0accesscontrol$/) {
8627: if (defined($group)) {
8628: if ($key !~ m-^\Q$group\E/-) {
8629: next;
8630: }
8631: }
8632: my ($fullpath) = split(/\0/,$key);
8633: if (ref($$current_permissions{$key}) eq 'HASH') {
8634: foreach my $control (keys(%{$$current_permissions{$key}})) {
8635: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8636: }
8637: }
8638: }
8639: }
8640: }
8641: return %access;
8642: }
8643:
8644: sub modify_access_controls {
8645: my ($file_name,$changes,$domain,$user)=@_;
8646: my ($outcome,$deloutcome);
8647: my %store_permissions;
8648: my %new_values;
8649: my %new_control;
8650: my %translation;
8651: my @deletions = ();
8652: my $now = time;
8653: if (exists($$changes{'activate'})) {
8654: if (ref($$changes{'activate'}) eq 'HASH') {
8655: my @newitems = sort(keys(%{$$changes{'activate'}}));
8656: my $numnew = scalar(@newitems);
8657: for (my $i=0; $i<$numnew; $i++) {
8658: my $newkey = $newitems[$i];
8659: my $newid = &Apache::loncommon::get_cgi_id();
8660: if ($newkey =~ /^\d+:/) {
8661: $newkey =~ s/^(\d+)/$newid/;
8662: $translation{$1} = $newid;
8663: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8664: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8665: $translation{$1} = $newid;
8666: }
8667: $new_values{$file_name."\0".$newkey} =
8668: $$changes{'activate'}{$newitems[$i]};
8669: $new_control{$newkey} = $now;
8670: }
8671: }
8672: }
8673: my %todelete;
8674: my %changed_items;
8675: foreach my $action ('delete','update') {
8676: if (exists($$changes{$action})) {
8677: if (ref($$changes{$action}) eq 'HASH') {
8678: foreach my $key (keys(%{$$changes{$action}})) {
8679: my ($itemnum) = ($key =~ /^([^:]+):/);
8680: if ($action eq 'delete') {
8681: $todelete{$itemnum} = 1;
8682: } else {
8683: $changed_items{$itemnum} = $key;
8684: }
8685: }
8686: }
8687: }
8688: }
8689: # get lock on access controls for file.
8690: my $lockhash = {
8691: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8692: ':'.$env{'user.domain'},
8693: };
8694: my $tries = 0;
8695: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8696:
8697: while (($gotlock ne 'ok') && $tries <3) {
8698: $tries ++;
8699: sleep 1;
8700: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8701: }
8702: if ($gotlock eq 'ok') {
8703: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8704: my ($tmp)=keys(%curr_permissions);
8705: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8706: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8707: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8708: if (ref($curr_controls) eq 'HASH') {
8709: foreach my $control_item (keys(%{$curr_controls})) {
8710: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8711: if (defined($todelete{$itemnum})) {
8712: push(@deletions,$file_name."\0".$control_item);
8713: } else {
8714: if (defined($changed_items{$itemnum})) {
8715: $new_control{$changed_items{$itemnum}} = $now;
8716: push(@deletions,$file_name."\0".$control_item);
8717: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8718: } else {
8719: $new_control{$control_item} = $$curr_controls{$control_item};
8720: }
8721: }
8722: }
8723: }
8724: }
8725: my ($group);
8726: if (&is_course($domain,$user)) {
8727: ($group,my $file) = split(/\//,$file_name,2);
8728: }
8729: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8730: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8731: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8732: # remove lock
8733: my @del_lock = ($file_name."\0".'locked_access_records');
8734: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8735: my $sqlresult =
8736: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8737: $group);
8738: } else {
8739: $outcome = "error: could not obtain lockfile\n";
8740: }
8741: return ($outcome,$deloutcome,\%new_values,\%translation);
8742: }
8743:
8744: sub make_public_indefinitely {
8745: my ($requrl) = @_;
8746: my $now = time;
8747: my $action = 'activate';
8748: my $aclnum = 0;
8749: if (&is_portfolio_url($requrl)) {
8750: my (undef,$udom,$unum,$file_name,$group) =
8751: &parse_portfolio_url($requrl);
8752: my $current_perms = &get_portfile_permissions($udom,$unum);
8753: my %access_controls = &get_access_controls($current_perms,
8754: $group,$file_name);
8755: foreach my $key (keys(%{$access_controls{$file_name}})) {
8756: my ($num,$scope,$end,$start) =
8757: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8758: if ($scope eq 'public') {
8759: if ($start <= $now && $end == 0) {
8760: $action = 'none';
8761: } else {
8762: $action = 'update';
8763: $aclnum = $num;
8764: }
8765: last;
8766: }
8767: }
8768: if ($action eq 'none') {
8769: return 'ok';
8770: } else {
8771: my %changes;
8772: my $newend = 0;
8773: my $newstart = $now;
8774: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8775: $changes{$action}{$newkey} = {
8776: type => 'public',
8777: time => {
8778: start => $newstart,
8779: end => $newend,
8780: },
8781: };
8782: my ($outcome,$deloutcome,$new_values,$translation) =
8783: &modify_access_controls($file_name,\%changes,$udom,$unum);
8784: return $outcome;
8785: }
8786: } else {
8787: return 'invalid';
8788: }
8789: }
8790:
8791: #------------------------------------------------------Get Marked as Read Only
8792:
8793: sub get_marked_as_readonly {
8794: my ($domain,$user,$what,$group) = @_;
8795: my $current_permissions = &get_portfile_permissions($domain,$user);
8796: my @readonly_files;
8797: my $cmp1=$what;
8798: if (ref($what)) { $cmp1=join('',@{$what}) };
8799: while (my ($file_name,$value) = each(%{$current_permissions})) {
8800: if (defined($group)) {
8801: if ($file_name !~ m-^\Q$group\E/-) {
8802: next;
8803: }
8804: }
8805: if (ref($value) eq "ARRAY"){
8806: foreach my $stored_what (@{$value}) {
8807: my $cmp2=$stored_what;
8808: if (ref($stored_what) eq 'ARRAY') {
8809: $cmp2=join('',@{$stored_what});
8810: }
8811: if ($cmp1 eq $cmp2) {
8812: push(@readonly_files, $file_name);
8813: last;
8814: } elsif (!defined($what)) {
8815: push(@readonly_files, $file_name);
8816: last;
8817: }
8818: }
8819: }
8820: }
8821: return @readonly_files;
8822: }
8823: #-----------------------------------------------------------Get Marked as Read Only Hash
8824:
8825: sub get_marked_as_readonly_hash {
8826: my ($current_permissions,$group,$what) = @_;
8827: my %readonly_files;
8828: while (my ($file_name,$value) = each(%{$current_permissions})) {
8829: if (defined($group)) {
8830: if ($file_name !~ m-^\Q$group\E/-) {
8831: next;
8832: }
8833: }
8834: if (ref($value) eq "ARRAY"){
8835: foreach my $stored_what (@{$value}) {
8836: if (ref($stored_what) eq 'ARRAY') {
8837: foreach my $lock_descriptor(@{$stored_what}) {
8838: if ($lock_descriptor eq 'graded') {
8839: $readonly_files{$file_name} = 'graded';
8840: } elsif ($lock_descriptor eq 'handback') {
8841: $readonly_files{$file_name} = 'handback';
8842: } else {
8843: if (!exists($readonly_files{$file_name})) {
8844: $readonly_files{$file_name} = 'locked';
8845: }
8846: }
8847: }
8848: }
8849: }
8850: }
8851: }
8852: return %readonly_files;
8853: }
8854: # ------------------------------------------------------------ Unmark as Read Only
8855:
8856: sub unmark_as_readonly {
8857: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8858: # for portfolio submissions, $what contains [$symb,$crsid]
8859: my ($domain,$user,$what,$file_name,$group) = @_;
8860: $file_name = &declutter_portfile($file_name);
8861: my $symb_crs = $what;
8862: if (ref($what)) { $symb_crs=join('',@$what); }
8863: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
8864: my ($tmp)=keys(%current_permissions);
8865: if ($tmp=~/^error:/) { undef(%current_permissions); }
8866: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
8867: foreach my $file (@readonly_files) {
8868: my $clean_file = &declutter_portfile($file);
8869: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
8870: my $current_locks = $current_permissions{$file};
8871: my @new_locks;
8872: my @del_keys;
8873: if (ref($current_locks) eq "ARRAY"){
8874: foreach my $locker (@{$current_locks}) {
8875: my $compare=$locker;
8876: if (ref($locker) eq 'ARRAY') {
8877: $compare=join('',@{$locker});
8878: if ($compare ne $symb_crs) {
8879: push(@new_locks, $locker);
8880: }
8881: }
8882: }
8883: if (scalar(@new_locks) > 0) {
8884: $current_permissions{$file} = \@new_locks;
8885: } else {
8886: push(@del_keys, $file);
8887: &del('file_permissions',\@del_keys, $domain, $user);
8888: delete($current_permissions{$file});
8889: }
8890: }
8891: }
8892: &put('file_permissions',\%current_permissions,$domain,$user);
8893: return;
8894: }
8895:
8896: # ------------------------------------------------------------ Directory lister
8897:
8898: sub dirlist {
8899: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
8900: $uri=~s/^\///;
8901: $uri=~s/\/$//;
8902: my ($udom, $uname);
8903: if ($getuserdir) {
8904: $udom = $userdomain;
8905: $uname = $username;
8906: } else {
8907: (undef,$udom,$uname)=split(/\//,$uri);
8908: if(defined($userdomain)) {
8909: $udom = $userdomain;
8910: }
8911: if(defined($username)) {
8912: $uname = $username;
8913: }
8914: }
8915: my ($dirRoot,$listing,@listing_results);
8916:
8917: $dirRoot = $perlvar{'lonDocRoot'};
8918: if (defined($getpropath)) {
8919: $dirRoot = &propath($udom,$uname);
8920: $dirRoot =~ s/\/$//;
8921: } elsif (defined($getuserdir)) {
8922: my $subdir=$uname.'__';
8923: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
8924: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8925: ."/$udom/$subdir/$uname";
8926: } elsif (defined($alternateRoot)) {
8927: $dirRoot = $alternateRoot;
8928: }
8929:
8930: if($udom) {
8931: if($uname) {
8932: my $uhome = &homeserver($uname,$udom);
8933: if ($uhome eq 'no_host') {
8934: return ([],'no_host');
8935: }
8936: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8937: .$getuserdir.':'.&escape($dirRoot)
8938: .':'.&escape($uname).':'.&escape($udom),$uhome);
8939: if ($listing eq 'unknown_cmd') {
8940: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
8941: } else {
8942: @listing_results = map { &unescape($_); } split(/:/,$listing);
8943: }
8944: if ($listing eq 'unknown_cmd') {
8945: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
8946: @listing_results = split(/:/,$listing);
8947: } else {
8948: @listing_results = map { &unescape($_); } split(/:/,$listing);
8949: }
8950: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8951: ($listing eq 'rejected') || ($listing eq 'refused') ||
8952: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8953: return ([],$listing);
8954: } else {
8955: return (\@listing_results);
8956: }
8957: } elsif(!$alternateRoot) {
8958: my (%allusers,%listerror);
8959: my %servers = &get_servers($udom,'library');
8960: foreach my $tryserver (keys(%servers)) {
8961: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8962: &escape($udom),$tryserver);
8963: if ($listing eq 'unknown_cmd') {
8964: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8965: $udom, $tryserver);
8966: } else {
8967: @listing_results = map { &unescape($_); } split(/:/,$listing);
8968: }
8969: if ($listing eq 'unknown_cmd') {
8970: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8971: $udom, $tryserver);
8972: @listing_results = split(/:/,$listing);
8973: } else {
8974: @listing_results =
8975: map { &unescape($_); } split(/:/,$listing);
8976: }
8977: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8978: ($listing eq 'rejected') || ($listing eq 'refused') ||
8979: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8980: $listerror{$tryserver} = $listing;
8981: } else {
8982: foreach my $line (@listing_results) {
8983: my ($entry) = split(/&/,$line,2);
8984: $allusers{$entry} = 1;
8985: }
8986: }
8987: }
8988: my @alluserslist=();
8989: foreach my $user (sort(keys(%allusers))) {
8990: push(@alluserslist,$user.'&user');
8991: }
8992: return (\@alluserslist);
8993: } else {
8994: return ([],'missing username');
8995: }
8996: } elsif(!defined($getpropath)) {
8997: my $path = $perlvar{'lonDocRoot'}.'/res/';
8998: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
8999: return (\@all_domains);
9000: } else {
9001: return ([],'missing domain');
9002: }
9003: }
9004:
9005: # --------------------------------------------- GetFileTimestamp
9006: # This function utilizes dirlist and returns the date stamp for
9007: # when it was last modified. It will also return an error of -1
9008: # if an error occurs
9009:
9010: sub GetFileTimestamp {
9011: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9012: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9013: $studentName = &LONCAPA::clean_username($studentName);
9014: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9015: undef,$getuserdir);
9016: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9017: return -1;
9018: }
9019: if (ref($fileref) eq 'ARRAY') {
9020: my @stats = split('&',$fileref->[0]);
9021: # @stats contains first the filename, then the stat output
9022: return $stats[10]; # so this is 10 instead of 9.
9023: } else {
9024: return -1;
9025: }
9026: }
9027:
9028: sub stat_file {
9029: my ($uri) = @_;
9030: $uri = &clutter_with_no_wrapper($uri);
9031:
9032: my ($udom,$uname,$file);
9033: if ($uri =~ m-^/(uploaded|editupload)/-) {
9034: ($udom,$uname,$file) =
9035: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9036: $file = 'userfiles/'.$file;
9037: }
9038: if ($uri =~ m-^/res/-) {
9039: ($udom,$uname) =
9040: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9041: $file = $uri;
9042: }
9043:
9044: if (!$udom || !$uname || !$file) {
9045: # unable to handle the uri
9046: return ();
9047: }
9048: my $getpropath;
9049: if ($file =~ /^userfiles\//) {
9050: $getpropath = 1;
9051: }
9052: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9053: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9054: return ();
9055: } else {
9056: if (ref($listref) eq 'ARRAY') {
9057: my @stats = split('&',$listref->[0]);
9058: shift(@stats); #filename is first
9059: return @stats;
9060: }
9061: }
9062: return ();
9063: }
9064:
9065: # -------------------------------------------------------- Value of a Condition
9066:
9067: # gets the value of a specific preevaluated condition
9068: # stored in the string $env{user.state.<cid>}
9069: # or looks up a condition reference in the bighash and if if hasn't
9070: # already been evaluated recurses into docondval to get the value of
9071: # the condition, then memoizing it to
9072: # $env{user.state.<cid>.<condition>}
9073: sub directcondval {
9074: my $number=shift;
9075: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9076: &Apache::lonuserstate::evalstate();
9077: }
9078: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9079: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9080: } elsif ($number =~ /^_/) {
9081: my $sub_condition;
9082: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9083: &GDBM_READER(),0640)) {
9084: $sub_condition=$bighash{'conditions'.$number};
9085: untie(%bighash);
9086: }
9087: my $value = &docondval($sub_condition);
9088: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9089: return $value;
9090: }
9091: if ($env{'user.state.'.$env{'request.course.id'}}) {
9092: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9093: } else {
9094: return 2;
9095: }
9096: }
9097:
9098: # get the collection of conditions for this resource
9099: sub condval {
9100: my $condidx=shift;
9101: my $allpathcond='';
9102: foreach my $cond (split(/\|/,$condidx)) {
9103: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9104: $allpathcond.=
9105: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9106: }
9107: }
9108: $allpathcond=~s/\|$//;
9109: return &docondval($allpathcond);
9110: }
9111:
9112: #evaluates an expression of conditions
9113: sub docondval {
9114: my ($allpathcond) = @_;
9115: my $result=0;
9116: if ($env{'request.course.id'}
9117: && defined($allpathcond)) {
9118: my $operand='|';
9119: my @stack;
9120: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9121: if ($chunk eq '(') {
9122: push @stack,($operand,$result);
9123: } elsif ($chunk eq ')') {
9124: my $before=pop @stack;
9125: if (pop @stack eq '&') {
9126: $result=$result>$before?$before:$result;
9127: } else {
9128: $result=$result>$before?$result:$before;
9129: }
9130: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9131: $operand=$chunk;
9132: } else {
9133: my $new=directcondval($chunk);
9134: if ($operand eq '&') {
9135: $result=$result>$new?$new:$result;
9136: } else {
9137: $result=$result>$new?$result:$new;
9138: }
9139: }
9140: }
9141: }
9142: return $result;
9143: }
9144:
9145: # ---------------------------------------------------- Devalidate courseresdata
9146:
9147: sub devalidatecourseresdata {
9148: my ($coursenum,$coursedomain)=@_;
9149: my $hashid=$coursenum.':'.$coursedomain;
9150: &devalidate_cache_new('courseres',$hashid);
9151: }
9152:
9153:
9154: # --------------------------------------------------- Course Resourcedata Query
9155: #
9156: # Parameters:
9157: # $coursenum - Number of the course.
9158: # $coursedomain - Domain at which the course was created.
9159: # Returns:
9160: # A hash of the course parameters along (I think) with timestamps
9161: # and version info.
9162:
9163: sub get_courseresdata {
9164: my ($coursenum,$coursedomain)=@_;
9165: my $coursehom=&homeserver($coursenum,$coursedomain);
9166: my $hashid=$coursenum.':'.$coursedomain;
9167: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9168: my %dumpreply;
9169: unless (defined($cached)) {
9170: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9171: $result=\%dumpreply;
9172: my ($tmp) = keys(%dumpreply);
9173: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9174: &do_cache_new('courseres',$hashid,$result,600);
9175: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9176: return $tmp;
9177: } elsif ($tmp =~ /^(error)/) {
9178: $result=undef;
9179: &do_cache_new('courseres',$hashid,$result,600);
9180: }
9181: }
9182: return $result;
9183: }
9184:
9185: sub devalidateuserresdata {
9186: my ($uname,$udom)=@_;
9187: my $hashid="$udom:$uname";
9188: &devalidate_cache_new('userres',$hashid);
9189: }
9190:
9191: sub get_userresdata {
9192: my ($uname,$udom)=@_;
9193: #most student don\'t have any data set, check if there is some data
9194: if (&EXT_cache_status($udom,$uname)) { return undef; }
9195:
9196: my $hashid="$udom:$uname";
9197: my ($result,$cached)=&is_cached_new('userres',$hashid);
9198: if (!defined($cached)) {
9199: my %resourcedata=&dump('resourcedata',$udom,$uname);
9200: $result=\%resourcedata;
9201: &do_cache_new('userres',$hashid,$result,600);
9202: }
9203: my ($tmp)=keys(%$result);
9204: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9205: return $result;
9206: }
9207: #error 2 occurs when the .db doesn't exist
9208: if ($tmp!~/error: 2 /) {
9209: &logthis("<font color=\"blue\">WARNING:".
9210: " Trying to get resource data for ".
9211: $uname." at ".$udom.": ".
9212: $tmp."</font>");
9213: } elsif ($tmp=~/error: 2 /) {
9214: #&EXT_cache_set($udom,$uname);
9215: &do_cache_new('userres',$hashid,undef,600);
9216: undef($tmp); # not really an error so don't send it back
9217: }
9218: return $tmp;
9219: }
9220: #----------------------------------------------- resdata - return resource data
9221: # Purpose:
9222: # Return resource data for either users or for a course.
9223: # Parameters:
9224: # $name - Course/user name.
9225: # $domain - Name of the domain the user/course is registered on.
9226: # $type - Type of thing $name is (must be 'course' or 'user'
9227: # @which - Array of names of resources desired.
9228: # Returns:
9229: # The value of the first reasource in @which that is found in the
9230: # resource hash.
9231: # Exceptional Conditions:
9232: # If the $type passed in is not valid (not the string 'course' or
9233: # 'user', an undefined reference is returned.
9234: # If none of the resources are found, an undef is returned
9235: sub resdata {
9236: my ($name,$domain,$type,@which)=@_;
9237: my $result;
9238: if ($type eq 'course') {
9239: $result=&get_courseresdata($name,$domain);
9240: } elsif ($type eq 'user') {
9241: $result=&get_userresdata($name,$domain);
9242: }
9243: if (!ref($result)) { return $result; }
9244: foreach my $item (@which) {
9245: if (defined($result->{$item->[0]})) {
9246: return [$result->{$item->[0]},$item->[1]];
9247: }
9248: }
9249: return undef;
9250: }
9251:
9252: #
9253: # EXT resource caching routines
9254: #
9255:
9256: sub clear_EXT_cache_status {
9257: &delenv('cache.EXT.');
9258: }
9259:
9260: sub EXT_cache_status {
9261: my ($target_domain,$target_user) = @_;
9262: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9263: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9264: # We know already the user has no data
9265: return 1;
9266: } else {
9267: return 0;
9268: }
9269: }
9270:
9271: sub EXT_cache_set {
9272: my ($target_domain,$target_user) = @_;
9273: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9274: #&appenv({$cachename => time});
9275: }
9276:
9277: # --------------------------------------------------------- Value of a Variable
9278: sub EXT {
9279:
9280: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9281: unless ($varname) { return ''; }
9282: #get real user name/domain, courseid and symb
9283: my $courseid;
9284: my $publicuser;
9285: if ($symbparm) {
9286: $symbparm=&get_symb_from_alias($symbparm);
9287: }
9288: if (!($uname && $udom)) {
9289: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9290: if (!$symbparm) { $symbparm=$cursymb; }
9291: } else {
9292: $courseid=$env{'request.course.id'};
9293: }
9294: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9295: my $rest;
9296: if (defined($therest[0])) {
9297: $rest=join('.',@therest);
9298: } else {
9299: $rest='';
9300: }
9301:
9302: my $qualifierrest=$qualifier;
9303: if ($rest) { $qualifierrest.='.'.$rest; }
9304: my $spacequalifierrest=$space;
9305: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9306: if ($realm eq 'user') {
9307: # --------------------------------------------------------------- user.resource
9308: if ($space eq 'resource') {
9309: if ( (defined($Apache::lonhomework::parsing_a_problem)
9310: || defined($Apache::lonhomework::parsing_a_task))
9311: &&
9312: ($symbparm eq &symbread()) ) {
9313: # if we are in the middle of processing the resource the
9314: # get the value we are planning on committing
9315: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9316: return $Apache::lonhomework::results{$qualifierrest};
9317: } else {
9318: return $Apache::lonhomework::history{$qualifierrest};
9319: }
9320: } else {
9321: my %restored;
9322: if ($publicuser || $env{'request.state'} eq 'construct') {
9323: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9324: } else {
9325: %restored=&restore($symbparm,$courseid,$udom,$uname);
9326: }
9327: return $restored{$qualifierrest};
9328: }
9329: # ----------------------------------------------------------------- user.access
9330: } elsif ($space eq 'access') {
9331: # FIXME - not supporting calls for a specific user
9332: return &allowed($qualifier,$rest);
9333: # ------------------------------------------ user.preferences, user.environment
9334: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9335: if (($uname eq $env{'user.name'}) &&
9336: ($udom eq $env{'user.domain'})) {
9337: return $env{join('.',('environment',$qualifierrest))};
9338: } else {
9339: my %returnhash;
9340: if (!$publicuser) {
9341: %returnhash=&userenvironment($udom,$uname,
9342: $qualifierrest);
9343: }
9344: return $returnhash{$qualifierrest};
9345: }
9346: # ----------------------------------------------------------------- user.course
9347: } elsif ($space eq 'course') {
9348: # FIXME - not supporting calls for a specific user
9349: return $env{join('.',('request.course',$qualifier))};
9350: # ------------------------------------------------------------------- user.role
9351: } elsif ($space eq 'role') {
9352: # FIXME - not supporting calls for a specific user
9353: my ($role,$where)=split(/\./,$env{'request.role'});
9354: if ($qualifier eq 'value') {
9355: return $role;
9356: } elsif ($qualifier eq 'extent') {
9357: return $where;
9358: }
9359: # ----------------------------------------------------------------- user.domain
9360: } elsif ($space eq 'domain') {
9361: return $udom;
9362: # ------------------------------------------------------------------- user.name
9363: } elsif ($space eq 'name') {
9364: return $uname;
9365: # ---------------------------------------------------- Any other user namespace
9366: } else {
9367: my %reply;
9368: if (!$publicuser) {
9369: %reply=&get($space,[$qualifierrest],$udom,$uname);
9370: }
9371: return $reply{$qualifierrest};
9372: }
9373: } elsif ($realm eq 'query') {
9374: # ---------------------------------------------- pull stuff out of query string
9375: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9376: [$spacequalifierrest]);
9377: return $env{'form.'.$spacequalifierrest};
9378: } elsif ($realm eq 'request') {
9379: # ------------------------------------------------------------- request.browser
9380: if ($space eq 'browser') {
9381: return $env{'browser.'.$qualifier};
9382: # ------------------------------------------------------------ request.filename
9383: } else {
9384: return $env{'request.'.$spacequalifierrest};
9385: }
9386: } elsif ($realm eq 'course') {
9387: # ---------------------------------------------------------- course.description
9388: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9389: } elsif ($realm eq 'resource') {
9390:
9391: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9392: if (!$symbparm) { $symbparm=&symbread(); }
9393: }
9394:
9395: if ($space eq 'title') {
9396: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9397: return &gettitle($symbparm);
9398: }
9399:
9400: if ($space eq 'map') {
9401: my ($map) = &decode_symb($symbparm);
9402: return &symbread($map);
9403: }
9404: if ($space eq 'filename') {
9405: if ($symbparm) {
9406: return &clutter((&decode_symb($symbparm))[2]);
9407: }
9408: return &hreflocation('',$env{'request.filename'});
9409: }
9410:
9411: my ($section, $group, @groups);
9412: my ($courselevelm,$courselevel);
9413: if ($symbparm && defined($courseid) &&
9414: $courseid eq $env{'request.course.id'}) {
9415:
9416: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9417:
9418: # ----------------------------------------------------- Cascading lookup scheme
9419: my $symbp=$symbparm;
9420: my $mapp=&deversion((&decode_symb($symbp))[0]);
9421:
9422: my $symbparm=$symbp.'.'.$spacequalifierrest;
9423: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9424:
9425: if (($env{'user.name'} eq $uname) &&
9426: ($env{'user.domain'} eq $udom)) {
9427: $section=$env{'request.course.sec'};
9428: @groups = split(/:/,$env{'request.course.groups'});
9429: @groups=&sort_course_groups($courseid,@groups);
9430: } else {
9431: if (! defined($usection)) {
9432: $section=&getsection($udom,$uname,$courseid);
9433: } else {
9434: $section = $usection;
9435: }
9436: @groups = &get_users_groups($udom,$uname,$courseid);
9437: }
9438:
9439: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9440: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9441: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9442:
9443: $courselevel=$courseid.'.'.$spacequalifierrest;
9444: my $courselevelr=$courseid.'.'.$symbparm;
9445: $courselevelm=$courseid.'.'.$mapparm;
9446:
9447: # ----------------------------------------------------------- first, check user
9448:
9449: my $userreply=&resdata($uname,$udom,'user',
9450: ([$courselevelr,'resource'],
9451: [$courselevelm,'map' ],
9452: [$courselevel, 'course' ]));
9453: if (defined($userreply)) { return &get_reply($userreply); }
9454:
9455: # ------------------------------------------------ second, check some of course
9456: my $coursereply;
9457: if (@groups > 0) {
9458: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9459: $mapparm,$spacequalifierrest);
9460: if (defined($coursereply)) { return &get_reply($coursereply); }
9461: }
9462:
9463: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9464: $env{'course.'.$courseid.'.domain'},
9465: 'course',
9466: ([$seclevelr, 'resource'],
9467: [$seclevelm, 'map' ],
9468: [$seclevel, 'course' ],
9469: [$courselevelr,'resource']));
9470: if (defined($coursereply)) { return &get_reply($coursereply); }
9471:
9472: # ------------------------------------------------------ third, check map parms
9473: my %parmhash=();
9474: my $thisparm='';
9475: if (tie(%parmhash,'GDBM_File',
9476: $env{'request.course.fn'}.'_parms.db',
9477: &GDBM_READER(),0640)) {
9478: $thisparm=$parmhash{$symbparm};
9479: untie(%parmhash);
9480: }
9481: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9482: }
9483: # ------------------------------------------ fourth, look in resource metadata
9484:
9485: $spacequalifierrest=~s/\./\_/;
9486: my $filename;
9487: if (!$symbparm) { $symbparm=&symbread(); }
9488: if ($symbparm) {
9489: $filename=(&decode_symb($symbparm))[2];
9490: } else {
9491: $filename=$env{'request.filename'};
9492: }
9493: my $metadata=&metadata($filename,$spacequalifierrest);
9494: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9495: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9496: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9497:
9498: # ---------------------------------------------- fourth, look in rest of course
9499: if ($symbparm && defined($courseid) &&
9500: $courseid eq $env{'request.course.id'}) {
9501: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9502: $env{'course.'.$courseid.'.domain'},
9503: 'course',
9504: ([$courselevelm,'map' ],
9505: [$courselevel, 'course']));
9506: if (defined($coursereply)) { return &get_reply($coursereply); }
9507: }
9508: # ------------------------------------------------------------------ Cascade up
9509: unless ($space eq '0') {
9510: my @parts=split(/_/,$space);
9511: my $id=pop(@parts);
9512: my $part=join('_',@parts);
9513: if ($part eq '') { $part='0'; }
9514: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9515: $symbparm,$udom,$uname,$section,1);
9516: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9517: }
9518: if ($recurse) { return undef; }
9519: my $pack_def=&packages_tab_default($filename,$varname);
9520: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9521: # ---------------------------------------------------- Any other user namespace
9522: } elsif ($realm eq 'environment') {
9523: # ----------------------------------------------------------------- environment
9524: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9525: return $env{'environment.'.$spacequalifierrest};
9526: } else {
9527: if ($uname eq 'anonymous' && $udom eq '') {
9528: return '';
9529: }
9530: my %returnhash=&userenvironment($udom,$uname,
9531: $spacequalifierrest);
9532: return $returnhash{$spacequalifierrest};
9533: }
9534: } elsif ($realm eq 'system') {
9535: # ----------------------------------------------------------------- system.time
9536: if ($space eq 'time') {
9537: return time;
9538: }
9539: } elsif ($realm eq 'server') {
9540: # ----------------------------------------------------------------- system.time
9541: if ($space eq 'name') {
9542: return $ENV{'SERVER_NAME'};
9543: }
9544: }
9545: return '';
9546: }
9547:
9548: sub get_reply {
9549: my ($reply_value) = @_;
9550: if (ref($reply_value) eq 'ARRAY') {
9551: if (wantarray) {
9552: return @$reply_value;
9553: }
9554: return $reply_value->[0];
9555: } else {
9556: return $reply_value;
9557: }
9558: }
9559:
9560: sub check_group_parms {
9561: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9562: my @groupitems = ();
9563: my $resultitem;
9564: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9565: foreach my $group (@{$groups}) {
9566: foreach my $level (@levels) {
9567: my $item = $courseid.'.['.$group.'].'.$level->[0];
9568: push(@groupitems,[$item,$level->[1]]);
9569: }
9570: }
9571: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9572: $env{'course.'.$courseid.'.domain'},
9573: 'course',@groupitems);
9574: return $coursereply;
9575: }
9576:
9577: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9578: my ($courseid,@groups) = @_;
9579: @groups = sort(@groups);
9580: return @groups;
9581: }
9582:
9583: sub packages_tab_default {
9584: my ($uri,$varname)=@_;
9585: my (undef,$part,$name)=split(/\./,$varname);
9586:
9587: my (@extension,@specifics,$do_default);
9588: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9589: my ($pack_type,$pack_part)=split(/_/,$package,2);
9590: if ($pack_type eq 'default') {
9591: $do_default=1;
9592: } elsif ($pack_type eq 'extension') {
9593: push(@extension,[$package,$pack_type,$pack_part]);
9594: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9595: # only look at packages defaults for packages that this id is
9596: push(@specifics,[$package,$pack_type,$pack_part]);
9597: }
9598: }
9599: # first look for a package that matches the requested part id
9600: foreach my $package (@specifics) {
9601: my (undef,$pack_type,$pack_part)=@{$package};
9602: next if ($pack_part ne $part);
9603: if (defined($packagetab{"$pack_type&$name&default"})) {
9604: return $packagetab{"$pack_type&$name&default"};
9605: }
9606: }
9607: # look for any possible matching non extension_ package
9608: foreach my $package (@specifics) {
9609: my (undef,$pack_type,$pack_part)=@{$package};
9610: if (defined($packagetab{"$pack_type&$name&default"})) {
9611: return $packagetab{"$pack_type&$name&default"};
9612: }
9613: if ($pack_type eq 'part') { $pack_part='0'; }
9614: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9615: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9616: }
9617: }
9618: # look for any posible extension_ match
9619: foreach my $package (@extension) {
9620: my ($package,$pack_type)=@{$package};
9621: if (defined($packagetab{"$pack_type&$name&default"})) {
9622: return $packagetab{"$pack_type&$name&default"};
9623: }
9624: if (defined($packagetab{$package."&$name&default"})) {
9625: return $packagetab{$package."&$name&default"};
9626: }
9627: }
9628: # look for a global default setting
9629: if ($do_default && defined($packagetab{"default&$name&default"})) {
9630: return $packagetab{"default&$name&default"};
9631: }
9632: return undef;
9633: }
9634:
9635: sub add_prefix_and_part {
9636: my ($prefix,$part)=@_;
9637: my $keyroot;
9638: if (defined($prefix) && $prefix !~ /^__/) {
9639: # prefix that has a part already
9640: $keyroot=$prefix;
9641: } elsif (defined($prefix)) {
9642: # prefix that is missing a part
9643: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9644: } else {
9645: # no prefix at all
9646: if (defined($part)) { $keyroot='_'.$part; }
9647: }
9648: return $keyroot;
9649: }
9650:
9651: # ---------------------------------------------------------------- Get metadata
9652:
9653: my %metaentry;
9654: my %importedpartids;
9655: sub metadata {
9656: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9657: $uri=&declutter($uri);
9658: # if it is a non metadata possible uri return quickly
9659: if (($uri eq '') ||
9660: (($uri =~ m|^/*adm/|) &&
9661: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9662: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9663: return undef;
9664: }
9665: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9666: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9667: return undef;
9668: }
9669: my $filename=$uri;
9670: $uri=~s/\.meta$//;
9671: #
9672: # Is the metadata already cached?
9673: # Look at timestamp of caching
9674: # Everything is cached by the main uri, libraries are never directly cached
9675: #
9676: if (!defined($liburi)) {
9677: my ($result,$cached)=&is_cached_new('meta',$uri);
9678: if (defined($cached)) { return $result->{':'.$what}; }
9679: }
9680: {
9681: # Imported parts would go here
9682: my %importedids=();
9683: my @origfileimportpartids=();
9684: my $importedparts=0;
9685: #
9686: # Is this a recursive call for a library?
9687: #
9688: # if (! exists($metacache{$uri})) {
9689: # $metacache{$uri}={};
9690: # }
9691: my $cachetime = 60*60;
9692: if ($liburi) {
9693: $liburi=&declutter($liburi);
9694: $filename=$liburi;
9695: } else {
9696: &devalidate_cache_new('meta',$uri);
9697: undef(%metaentry);
9698: }
9699: my %metathesekeys=();
9700: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9701: my $metastring;
9702: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9703: my $which = &hreflocation('','/'.($liburi || $uri));
9704: $metastring =
9705: &Apache::lonnet::ssi_body($which,
9706: ('grade_target' => 'meta'));
9707: $cachetime = 1; # only want this cached in the child not long term
9708: } elsif (($uri !~ m -^(editupload)/-) &&
9709: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9710: my $file=&filelocation('',&clutter($filename));
9711: #push(@{$metaentry{$uri.'.file'}},$file);
9712: $metastring=&getfile($file);
9713: }
9714: my $parser=HTML::LCParser->new(\$metastring);
9715: my $token;
9716: undef %metathesekeys;
9717: while ($token=$parser->get_token) {
9718: if ($token->[0] eq 'S') {
9719: if (defined($token->[2]->{'package'})) {
9720: #
9721: # This is a package - get package info
9722: #
9723: my $package=$token->[2]->{'package'};
9724: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9725: if (defined($token->[2]->{'id'})) {
9726: $keyroot.='_'.$token->[2]->{'id'};
9727: }
9728: if ($metaentry{':packages'}) {
9729: $metaentry{':packages'}.=','.$package.$keyroot;
9730: } else {
9731: $metaentry{':packages'}=$package.$keyroot;
9732: }
9733: foreach my $pack_entry (keys(%packagetab)) {
9734: my $part=$keyroot;
9735: $part=~s/^\_//;
9736: if ($pack_entry=~/^\Q$package\E\&/ ||
9737: $pack_entry=~/^\Q$package\E_0\&/) {
9738: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9739: # ignore package.tab specified default values
9740: # here &package_tab_default() will fetch those
9741: if ($subp eq 'default') { next; }
9742: my $value=$packagetab{$pack_entry};
9743: my $unikey;
9744: if ($pack =~ /_0$/) {
9745: $unikey='parameter_0_'.$name;
9746: $part=0;
9747: } else {
9748: $unikey='parameter'.$keyroot.'_'.$name;
9749: }
9750: if ($subp eq 'display') {
9751: $value.=' [Part: '.$part.']';
9752: }
9753: $metaentry{':'.$unikey.'.part'}=$part;
9754: $metathesekeys{$unikey}=1;
9755: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9756: $metaentry{':'.$unikey.'.'.$subp}=$value;
9757: }
9758: if (defined($metaentry{':'.$unikey.'.default'})) {
9759: $metaentry{':'.$unikey}=
9760: $metaentry{':'.$unikey.'.default'};
9761: }
9762: }
9763: }
9764: } else {
9765: #
9766: # This is not a package - some other kind of start tag
9767: #
9768: my $entry=$token->[1];
9769: my $unikey='';
9770:
9771: if ($entry eq 'import') {
9772: #
9773: # Importing a library here
9774: #
9775: my $location=$parser->get_text('/import');
9776: my $dir=$filename;
9777: $dir=~s|[^/]*$||;
9778: $location=&filelocation($dir,$location);
9779:
9780: my $importmode=$token->[2]->{'importmode'};
9781: if ($importmode eq 'problem') {
9782: # Import as problem/response
9783: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9784: } elsif ($importmode eq 'part') {
9785: # Import as part(s)
9786: $importedparts=1;
9787: # We need to get the original file and the imported file to get the part order correct
9788: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9789: # Load and inspect original file
9790: if ($#origfileimportpartids<0) {
9791: undef(%importedpartids);
9792: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9793: my $origfile=&getfile($origfilelocation);
9794: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9795: }
9796:
9797: # Load and inspect imported file
9798: my $impfile=&getfile($location);
9799: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9800: if ($#impfilepartids>=0) {
9801: # This problem had parts
9802: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9803: } else {
9804: # Importing by turning a single problem into a problem part
9805: # It gets the import-tags ID as part-ID
9806: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9807: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9808: }
9809: } else {
9810: # Normal import
9811: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9812: if (defined($token->[2]->{'id'})) {
9813: $unikey.='_'.$token->[2]->{'id'};
9814: }
9815: }
9816:
9817: if ($depthcount<20) {
9818: my $metadata =
9819: &metadata($uri,'keys', $location,$unikey,
9820: $depthcount+1);
9821: foreach my $meta (split(',',$metadata)) {
9822: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9823: $metathesekeys{$meta}=1;
9824: }
9825:
9826: }
9827: } else {
9828: #
9829: # Not importing, some other kind of non-package, non-library start tag
9830: #
9831: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9832: if (defined($token->[2]->{'id'})) {
9833: $unikey.='_'.$token->[2]->{'id'};
9834: }
9835: if (defined($token->[2]->{'name'})) {
9836: $unikey.='_'.$token->[2]->{'name'};
9837: }
9838: $metathesekeys{$unikey}=1;
9839: foreach my $param (@{$token->[3]}) {
9840: $metaentry{':'.$unikey.'.'.$param} =
9841: $token->[2]->{$param};
9842: }
9843: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9844: my $default=$metaentry{':'.$unikey.'.default'};
9845: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9846: # only ws inside the tag, and not in default, so use default
9847: # as value
9848: $metaentry{':'.$unikey}=$default;
9849: } elsif ( $internaltext =~ /\S/ ) {
9850: # something interesting inside the tag
9851: $metaentry{':'.$unikey}=$internaltext;
9852: } else {
9853: # no interesting values, don't set a default
9854: }
9855: # end of not-a-package not-a-library import
9856: }
9857: # end of not-a-package start tag
9858: }
9859: # the next is the end of "start tag"
9860: }
9861: }
9862: my ($extension) = ($uri =~ /\.(\w+)$/);
9863: $extension = lc($extension);
9864: if ($extension eq 'htm') { $extension='html'; }
9865:
9866: foreach my $key (keys(%packagetab)) {
9867: #no specific packages #how's our extension
9868: if ($key!~/^extension_\Q$extension\E&/) { next; }
9869: &metadata_create_package_def($uri,$key,'extension_'.$extension,
9870: \%metathesekeys);
9871: }
9872:
9873: if (!exists($metaentry{':packages'})
9874: || $packagetab{"import_defaults&extension_$extension"}) {
9875: foreach my $key (keys(%packagetab)) {
9876: #no specific packages well let's get default then
9877: if ($key!~/^default&/) { next; }
9878: &metadata_create_package_def($uri,$key,'default',
9879: \%metathesekeys);
9880: }
9881: }
9882: # are there custom rights to evaluate
9883: if ($metaentry{':copyright'} eq 'custom') {
9884:
9885: #
9886: # Importing a rights file here
9887: #
9888: unless ($depthcount) {
9889: my $location=$metaentry{':customdistributionfile'};
9890: my $dir=$filename;
9891: $dir=~s|[^/]*$||;
9892: $location=&filelocation($dir,$location);
9893: my $rights_metadata =
9894: &metadata($uri,'keys',$location,'_rights',
9895: $depthcount+1);
9896: foreach my $rights (split(',',$rights_metadata)) {
9897: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
9898: $metathesekeys{$rights}=1;
9899: }
9900: }
9901: }
9902: # uniqifiy package listing
9903: my %seen;
9904: my @uniq_packages =
9905: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
9906: $metaentry{':packages'} = join(',',@uniq_packages);
9907:
9908: if ($importedparts) {
9909: # We had imported parts and need to rebuild partorder
9910: $metaentry{':partorder'}='';
9911: $metathesekeys{'partorder'}=1;
9912: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
9913: if ($origfileimportpartids[$index] eq 'part') {
9914: # original part, part of the problem
9915: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
9916: } else {
9917: # we have imported parts at this position
9918: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
9919: }
9920: }
9921: $metaentry{':partorder'}=~s/^\,//;
9922: }
9923:
9924: $metaentry{':keys'} = join(',',keys(%metathesekeys));
9925: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
9926: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
9927: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9928: # this is the end of "was not already recently cached
9929: }
9930: return $metaentry{':'.$what};
9931: }
9932:
9933: sub metadata_create_package_def {
9934: my ($uri,$key,$package,$metathesekeys)=@_;
9935: my ($pack,$name,$subp)=split(/\&/,$key);
9936: if ($subp eq 'default') { next; }
9937:
9938: if (defined($metaentry{':packages'})) {
9939: $metaentry{':packages'}.=','.$package;
9940: } else {
9941: $metaentry{':packages'}=$package;
9942: }
9943: my $value=$packagetab{$key};
9944: my $unikey;
9945: $unikey='parameter_0_'.$name;
9946: $metaentry{':'.$unikey.'.part'}=0;
9947: $$metathesekeys{$unikey}=1;
9948: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9949: $metaentry{':'.$unikey.'.'.$subp}=$value;
9950: }
9951: if (defined($metaentry{':'.$unikey.'.default'})) {
9952: $metaentry{':'.$unikey}=
9953: $metaentry{':'.$unikey.'.default'};
9954: }
9955: }
9956:
9957: sub metadata_generate_part0 {
9958: my ($metadata,$metacache,$uri) = @_;
9959: my %allnames;
9960: foreach my $metakey (keys(%$metadata)) {
9961: if ($metakey=~/^parameter\_(.*)/) {
9962: my $part=$$metacache{':'.$metakey.'.part'};
9963: my $name=$$metacache{':'.$metakey.'.name'};
9964: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9965: $allnames{$name}=$part;
9966: }
9967: }
9968: }
9969: foreach my $name (keys(%allnames)) {
9970: $$metadata{"parameter_0_$name"}=1;
9971: my $key=":parameter_0_$name";
9972: $$metacache{"$key.part"}='0';
9973: $$metacache{"$key.name"}=$name;
9974: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9975: $allnames{$name}.'_'.$name.
9976: '.type'};
9977: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9978: '.display'};
9979: my $expr='[Part: '.$allnames{$name}.']';
9980: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9981: $$metacache{"$key.display"}=$olddis;
9982: }
9983: }
9984:
9985: # ------------------------------------------------------ Devalidate title cache
9986:
9987: sub devalidate_title_cache {
9988: my ($url)=@_;
9989: if (!$env{'request.course.id'}) { return; }
9990: my $symb=&symbread($url);
9991: if (!$symb) { return; }
9992: my $key=$env{'request.course.id'}."\0".$symb;
9993: &devalidate_cache_new('title',$key);
9994: }
9995:
9996: # ------------------------------------------------- Get the title of a course
9997:
9998: sub current_course_title {
9999: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10000: }
10001: # ------------------------------------------------- Get the title of a resource
10002:
10003: sub gettitle {
10004: my $urlsymb=shift;
10005: my $symb=&symbread($urlsymb);
10006: if ($symb) {
10007: my $key=$env{'request.course.id'}."\0".$symb;
10008: my ($result,$cached)=&is_cached_new('title',$key);
10009: if (defined($cached)) {
10010: return $result;
10011: }
10012: my ($map,$resid,$url)=&decode_symb($symb);
10013: my $title='';
10014: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10015: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10016: } else {
10017: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10018: &GDBM_READER(),0640)) {
10019: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10020: $title=$bighash{'title_'.$mapid.'.'.$resid};
10021: untie(%bighash);
10022: }
10023: }
10024: $title=~s/\&colon\;/\:/gs;
10025: if ($title) {
10026: # Remember both $symb and $title for dynamic metadata
10027: $accesshash{$symb.'___crstitle'}=$title;
10028: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10029: # Cache this title and then return it
10030: return &do_cache_new('title',$key,$title,600);
10031: }
10032: $urlsymb=$url;
10033: }
10034: my $title=&metadata($urlsymb,'title');
10035: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10036: return $title;
10037: }
10038:
10039: sub get_slot {
10040: my ($which,$cnum,$cdom)=@_;
10041: if (!$cnum || !$cdom) {
10042: (undef,my $courseid)=&whichuser();
10043: $cdom=$env{'course.'.$courseid.'.domain'};
10044: $cnum=$env{'course.'.$courseid.'.num'};
10045: }
10046: my $key=join("\0",'slots',$cdom,$cnum,$which);
10047: my %slotinfo;
10048: if (exists($remembered{$key})) {
10049: $slotinfo{$which} = $remembered{$key};
10050: } else {
10051: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10052: &Apache::lonhomework::showhash(%slotinfo);
10053: my ($tmp)=keys(%slotinfo);
10054: if ($tmp=~/^error:/) { return (); }
10055: $remembered{$key} = $slotinfo{$which};
10056: }
10057: if (ref($slotinfo{$which}) eq 'HASH') {
10058: return %{$slotinfo{$which}};
10059: }
10060: return $slotinfo{$which};
10061: }
10062:
10063: sub get_reservable_slots {
10064: my ($cnum,$cdom,$uname,$udom) = @_;
10065: my $now = time;
10066: my $reservable_info;
10067: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10068: if (exists($remembered{$key})) {
10069: $reservable_info = $remembered{$key};
10070: } else {
10071: my %resv;
10072: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10073: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10074: $reservable_info = \%resv;
10075: $remembered{$key} = $reservable_info;
10076: }
10077: return $reservable_info;
10078: }
10079:
10080: sub get_course_slots {
10081: my ($cnum,$cdom) = @_;
10082: my $hashid=$cnum.':'.$cdom;
10083: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10084: if (defined($cached)) {
10085: if (ref($result) eq 'HASH') {
10086: return %{$result};
10087: }
10088: } else {
10089: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10090: my ($tmp) = keys(%slots);
10091: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10092: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
10093: return %slots;
10094: }
10095: }
10096: return;
10097: }
10098:
10099: sub devalidate_slots_cache {
10100: my ($cnum,$cdom)=@_;
10101: my $hashid=$cnum.':'.$cdom;
10102: &devalidate_cache_new('allslots',$hashid);
10103: }
10104:
10105: sub get_coursechange {
10106: my ($cdom,$cnum) = @_;
10107: if ($cdom eq '' || $cnum eq '') {
10108: return unless ($env{'request.course.id'});
10109: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10110: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10111: }
10112: my $hashid=$cdom.'_'.$cnum;
10113: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10114: if ((defined($cached)) && ($change ne '')) {
10115: return $change;
10116: } else {
10117: my %crshash;
10118: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10119: if ($crshash{'internal.contentchange'} eq '') {
10120: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10121: if ($change eq '') {
10122: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10123: $change = $crshash{'internal.created'};
10124: }
10125: } else {
10126: $change = $crshash{'internal.contentchange'};
10127: }
10128: my $cachetime = 600;
10129: &do_cache_new('crschange',$hashid,$change,$cachetime);
10130: }
10131: return $change;
10132: }
10133:
10134: sub devalidate_coursechange_cache {
10135: my ($cnum,$cdom)=@_;
10136: my $hashid=$cnum.':'.$cdom;
10137: &devalidate_cache_new('crschange',$hashid);
10138: }
10139:
10140: # ------------------------------------------------- Update symbolic store links
10141:
10142: sub symblist {
10143: my ($mapname,%newhash)=@_;
10144: $mapname=&deversion(&declutter($mapname));
10145: my %hash;
10146: if (($env{'request.course.fn'}) && (%newhash)) {
10147: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10148: &GDBM_WRCREAT(),0640)) {
10149: foreach my $url (keys(%newhash)) {
10150: next if ($url eq 'last_known'
10151: && $env{'form.no_update_last_known'});
10152: $hash{declutter($url)}=&encode_symb($mapname,
10153: $newhash{$url}->[1],
10154: $newhash{$url}->[0]);
10155: }
10156: if (untie(%hash)) {
10157: return 'ok';
10158: }
10159: }
10160: }
10161: return 'error';
10162: }
10163:
10164: # --------------------------------------------------------------- Verify a symb
10165:
10166: sub symbverify {
10167: my ($symb,$thisurl,$encstate)=@_;
10168: my $thisfn=$thisurl;
10169: $thisfn=&declutter($thisfn);
10170: # direct jump to resource in page or to a sequence - will construct own symbs
10171: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10172: # check URL part
10173: my ($map,$resid,$url)=&decode_symb($symb);
10174:
10175: unless ($url eq $thisfn) { return 0; }
10176:
10177: $symb=&symbclean($symb);
10178: $thisurl=&deversion($thisurl);
10179: $thisfn=&deversion($thisfn);
10180:
10181: my %bighash;
10182: my $okay=0;
10183:
10184: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10185: &GDBM_READER(),0640)) {
10186: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10187: $thisurl =~ s/\?.+$//;
10188: }
10189: my $ids=$bighash{'ids_'.&clutter($thisurl)};
10190: unless ($ids) {
10191: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10192: $ids=$bighash{$idkey};
10193: }
10194: if ($ids) {
10195: # ------------------------------------------------------------------- Has ID(s)
10196: foreach my $id (split(/\,/,$ids)) {
10197: my ($mapid,$resid)=split(/\./,$id);
10198: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10199: $symb =~ s/\?.+$//;
10200: }
10201: if (
10202: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10203: eq $symb) {
10204: if (ref($encstate)) {
10205: $$encstate = $bighash{'encrypted_'.$id};
10206: }
10207: if (($env{'request.role.adv'}) ||
10208: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10209: ($thisurl eq '/adm/navmaps')) {
10210: $okay=1;
10211: }
10212: }
10213: }
10214: }
10215: untie(%bighash);
10216: }
10217: return $okay;
10218: }
10219:
10220: # --------------------------------------------------------------- Clean-up symb
10221:
10222: sub symbclean {
10223: my $symb=shift;
10224: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10225: # remove version from map
10226: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10227:
10228: # remove version from URL
10229: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10230:
10231: # remove wrapper
10232:
10233: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10234: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10235: return $symb;
10236: }
10237:
10238: # ---------------------------------------------- Split symb to find map and url
10239:
10240: sub encode_symb {
10241: my ($map,$resid,$url)=@_;
10242: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10243: }
10244:
10245: sub decode_symb {
10246: my $symb=shift;
10247: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10248: my ($map,$resid,$url)=split(/___/,$symb);
10249: return (&fixversion($map),$resid,&fixversion($url));
10250: }
10251:
10252: sub fixversion {
10253: my $fn=shift;
10254: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10255: my %bighash;
10256: my $uri=&clutter($fn);
10257: my $key=$env{'request.course.id'}.'_'.$uri;
10258: # is this cached?
10259: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10260: if (defined($cached)) { return $result; }
10261: # unfortunately not cached, or expired
10262: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10263: &GDBM_READER(),0640)) {
10264: if ($bighash{'version_'.$uri}) {
10265: my $version=$bighash{'version_'.$uri};
10266: unless (($version eq 'mostrecent') ||
10267: ($version==&getversion($uri))) {
10268: $uri=~s/\.(\w+)$/\.$version\.$1/;
10269: }
10270: }
10271: untie %bighash;
10272: }
10273: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10274: }
10275:
10276: sub deversion {
10277: my $url=shift;
10278: $url=~s/\.\d+\.(\w+)$/\.$1/;
10279: return $url;
10280: }
10281:
10282: # ------------------------------------------------------ Return symb list entry
10283:
10284: sub symbread {
10285: my ($thisfn,$donotrecurse)=@_;
10286: my $cache_str='request.symbread.cached.'.$thisfn;
10287: if (defined($env{$cache_str})) {
10288: if (($thisfn) || ($env{$cache_str} ne '')) {
10289: return $env{$cache_str};
10290: }
10291: }
10292: # no filename provided? try from environment
10293: unless ($thisfn) {
10294: if ($env{'request.symb'}) {
10295: return $env{$cache_str}=&symbclean($env{'request.symb'});
10296: }
10297: $thisfn=$env{'request.filename'};
10298: }
10299: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10300: # is that filename actually a symb? Verify, clean, and return
10301: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10302: if (&symbverify($thisfn,$1)) {
10303: return $env{$cache_str}=&symbclean($thisfn);
10304: }
10305: }
10306: $thisfn=declutter($thisfn);
10307: my %hash;
10308: my %bighash;
10309: my $syval='';
10310: if (($env{'request.course.fn'}) && ($thisfn)) {
10311: my $targetfn = $thisfn;
10312: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10313: $targetfn = 'adm/wrapper/'.$thisfn;
10314: }
10315: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10316: $targetfn=$1;
10317: }
10318: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10319: &GDBM_READER(),0640)) {
10320: $syval=$hash{$targetfn};
10321: untie(%hash);
10322: }
10323: # ---------------------------------------------------------- There was an entry
10324: if ($syval) {
10325: #unless ($syval=~/\_\d+$/) {
10326: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10327: #&appenv({'request.ambiguous' => $thisfn});
10328: #return $env{$cache_str}='';
10329: #}
10330: #$syval.=$1;
10331: #}
10332: } else {
10333: # ------------------------------------------------------- Was not in symb table
10334: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10335: &GDBM_READER(),0640)) {
10336: # ---------------------------------------------- Get ID(s) for current resource
10337: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10338: unless ($ids) {
10339: $ids=$bighash{'ids_/'.$thisfn};
10340: }
10341: unless ($ids) {
10342: # alias?
10343: $ids=$bighash{'mapalias_'.$thisfn};
10344: }
10345: if ($ids) {
10346: # ------------------------------------------------------------------- Has ID(s)
10347: my @possibilities=split(/\,/,$ids);
10348: if ($#possibilities==0) {
10349: # ----------------------------------------------- There is only one possibility
10350: my ($mapid,$resid)=split(/\./,$ids);
10351: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10352: $resid,$thisfn);
10353: } elsif (!$donotrecurse) {
10354: # ------------------------------------------ There is more than one possibility
10355: my $realpossible=0;
10356: foreach my $id (@possibilities) {
10357: my $file=$bighash{'src_'.$id};
10358: if (&allowed('bre',$file)) {
10359: my ($mapid,$resid)=split(/\./,$id);
10360: if ($bighash{'map_type_'.$mapid} ne 'page') {
10361: $realpossible++;
10362: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10363: $resid,$thisfn);
10364: }
10365: }
10366: }
10367: if ($realpossible!=1) { $syval=''; }
10368: } else {
10369: $syval='';
10370: }
10371: }
10372: untie(%bighash)
10373: }
10374: }
10375: if ($syval) {
10376: return $env{$cache_str}=$syval;
10377: }
10378: }
10379: &appenv({'request.ambiguous' => $thisfn});
10380: return $env{$cache_str}='';
10381: }
10382:
10383: # ---------------------------------------------------------- Return random seed
10384:
10385: sub numval {
10386: my $txt=shift;
10387: $txt=~tr/A-J/0-9/;
10388: $txt=~tr/a-j/0-9/;
10389: $txt=~tr/K-T/0-9/;
10390: $txt=~tr/k-t/0-9/;
10391: $txt=~tr/U-Z/0-5/;
10392: $txt=~tr/u-z/0-5/;
10393: $txt=~s/\D//g;
10394: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10395: return int($txt);
10396: }
10397:
10398: sub numval2 {
10399: my $txt=shift;
10400: $txt=~tr/A-J/0-9/;
10401: $txt=~tr/a-j/0-9/;
10402: $txt=~tr/K-T/0-9/;
10403: $txt=~tr/k-t/0-9/;
10404: $txt=~tr/U-Z/0-5/;
10405: $txt=~tr/u-z/0-5/;
10406: $txt=~s/\D//g;
10407: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10408: my $total;
10409: foreach my $val (@txts) { $total+=$val; }
10410: if ($_64bit) { if ($total > 2**32) { return -1; } }
10411: return int($total);
10412: }
10413:
10414: sub numval3 {
10415: use integer;
10416: my $txt=shift;
10417: $txt=~tr/A-J/0-9/;
10418: $txt=~tr/a-j/0-9/;
10419: $txt=~tr/K-T/0-9/;
10420: $txt=~tr/k-t/0-9/;
10421: $txt=~tr/U-Z/0-5/;
10422: $txt=~tr/u-z/0-5/;
10423: $txt=~s/\D//g;
10424: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10425: my $total;
10426: foreach my $val (@txts) { $total+=$val; }
10427: if ($_64bit) { $total=(($total<<32)>>32); }
10428: return $total;
10429: }
10430:
10431: sub digest {
10432: my ($data)=@_;
10433: my $digest=&Digest::MD5::md5($data);
10434: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10435: my ($e,$f);
10436: {
10437: use integer;
10438: $e=($a+$b);
10439: $f=($c+$d);
10440: if ($_64bit) {
10441: $e=(($e<<32)>>32);
10442: $f=(($f<<32)>>32);
10443: }
10444: }
10445: if (wantarray) {
10446: return ($e,$f);
10447: } else {
10448: my $g;
10449: {
10450: use integer;
10451: $g=($e+$f);
10452: if ($_64bit) {
10453: $g=(($g<<32)>>32);
10454: }
10455: }
10456: return $g;
10457: }
10458: }
10459:
10460: sub latest_rnd_algorithm_id {
10461: return '64bit5';
10462: }
10463:
10464: sub get_rand_alg {
10465: my ($courseid)=@_;
10466: if (!$courseid) { $courseid=(&whichuser())[1]; }
10467: if ($courseid) {
10468: return $env{"course.$courseid.rndseed"};
10469: }
10470: return &latest_rnd_algorithm_id();
10471: }
10472:
10473: sub validCODE {
10474: my ($CODE)=@_;
10475: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10476: return 0;
10477: }
10478:
10479: sub getCODE {
10480: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10481: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10482: defined($Apache::lonhomework::parsing_a_task) ) &&
10483: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10484: return $Apache::lonhomework::history{'resource.CODE'};
10485: }
10486: return undef;
10487: }
10488: #
10489: # Determines the random seed for a specific context:
10490: #
10491: # parameters:
10492: # symb - in course context the symb for the seed.
10493: # course_id - The course id of the form domain_coursenum.
10494: # domain - Domain for the user.
10495: # course - Course for the user.
10496: # cenv - environment of the course.
10497: #
10498: # NOTE:
10499: # All parameters are picked out of the environment if missing
10500: # or not defined.
10501: # If a symb cannot be determined the current time is used instead.
10502: #
10503: # For a given well defined symb, courside, domain, username,
10504: # and course environment, the seed is reproducible.
10505: #
10506: sub rndseed {
10507: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10508: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10509: if (!defined($symb)) {
10510: unless ($symb=$wsymb) { return time; }
10511: }
10512: if (!defined $courseid) {
10513: $courseid=$wcourseid;
10514: }
10515: if (!defined $domain) { $domain=$wdomain; }
10516: if (!defined $username) { $username=$wusername }
10517:
10518: my $which;
10519: if (defined($cenv->{'rndseed'})) {
10520: $which = $cenv->{'rndseed'};
10521: } else {
10522: $which =&get_rand_alg($courseid);
10523: }
10524: if (defined(&getCODE())) {
10525:
10526: if ($which eq '64bit5') {
10527: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10528: } elsif ($which eq '64bit4') {
10529: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10530: } else {
10531: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10532: }
10533: } elsif ($which eq '64bit5') {
10534: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10535: } elsif ($which eq '64bit4') {
10536: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10537: } elsif ($which eq '64bit3') {
10538: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10539: } elsif ($which eq '64bit2') {
10540: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10541: } elsif ($which eq '64bit') {
10542: return &rndseed_64bit($symb,$courseid,$domain,$username);
10543: }
10544: return &rndseed_32bit($symb,$courseid,$domain,$username);
10545: }
10546:
10547: sub rndseed_32bit {
10548: my ($symb,$courseid,$domain,$username)=@_;
10549: {
10550: use integer;
10551: my $symbchck=unpack("%32C*",$symb) << 27;
10552: my $symbseed=numval($symb) << 22;
10553: my $namechck=unpack("%32C*",$username) << 17;
10554: my $nameseed=numval($username) << 12;
10555: my $domainseed=unpack("%32C*",$domain) << 7;
10556: my $courseseed=unpack("%32C*",$courseid);
10557: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10558: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10559: #&logthis("rndseed :$num:$symb");
10560: if ($_64bit) { $num=(($num<<32)>>32); }
10561: return $num;
10562: }
10563: }
10564:
10565: sub rndseed_64bit {
10566: my ($symb,$courseid,$domain,$username)=@_;
10567: {
10568: use integer;
10569: my $symbchck=unpack("%32S*",$symb) << 21;
10570: my $symbseed=numval($symb) << 10;
10571: my $namechck=unpack("%32S*",$username);
10572:
10573: my $nameseed=numval($username) << 21;
10574: my $domainseed=unpack("%32S*",$domain) << 10;
10575: my $courseseed=unpack("%32S*",$courseid);
10576:
10577: my $num1=$symbchck+$symbseed+$namechck;
10578: my $num2=$nameseed+$domainseed+$courseseed;
10579: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10580: #&logthis("rndseed :$num:$symb");
10581: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10582: return "$num1,$num2";
10583: }
10584: }
10585:
10586: sub rndseed_64bit2 {
10587: my ($symb,$courseid,$domain,$username)=@_;
10588: {
10589: use integer;
10590: # strings need to be an even # of cahracters long, it it is odd the
10591: # last characters gets thrown away
10592: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10593: my $symbseed=numval($symb) << 10;
10594: my $namechck=unpack("%32S*",$username.' ');
10595:
10596: my $nameseed=numval($username) << 21;
10597: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10598: my $courseseed=unpack("%32S*",$courseid.' ');
10599:
10600: my $num1=$symbchck+$symbseed+$namechck;
10601: my $num2=$nameseed+$domainseed+$courseseed;
10602: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10603: #&logthis("rndseed :$num:$symb");
10604: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10605: return "$num1,$num2";
10606: }
10607: }
10608:
10609: sub rndseed_64bit3 {
10610: my ($symb,$courseid,$domain,$username)=@_;
10611: {
10612: use integer;
10613: # strings need to be an even # of cahracters long, it it is odd the
10614: # last characters gets thrown away
10615: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10616: my $symbseed=numval2($symb) << 10;
10617: my $namechck=unpack("%32S*",$username.' ');
10618:
10619: my $nameseed=numval2($username) << 21;
10620: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10621: my $courseseed=unpack("%32S*",$courseid.' ');
10622:
10623: my $num1=$symbchck+$symbseed+$namechck;
10624: my $num2=$nameseed+$domainseed+$courseseed;
10625: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10626: #&logthis("rndseed :$num1:$num2:$_64bit");
10627: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10628:
10629: return "$num1:$num2";
10630: }
10631: }
10632:
10633: sub rndseed_64bit4 {
10634: my ($symb,$courseid,$domain,$username)=@_;
10635: {
10636: use integer;
10637: # strings need to be an even # of cahracters long, it it is odd the
10638: # last characters gets thrown away
10639: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10640: my $symbseed=numval3($symb) << 10;
10641: my $namechck=unpack("%32S*",$username.' ');
10642:
10643: my $nameseed=numval3($username) << 21;
10644: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10645: my $courseseed=unpack("%32S*",$courseid.' ');
10646:
10647: my $num1=$symbchck+$symbseed+$namechck;
10648: my $num2=$nameseed+$domainseed+$courseseed;
10649: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10650: #&logthis("rndseed :$num1:$num2:$_64bit");
10651: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10652:
10653: return "$num1:$num2";
10654: }
10655: }
10656:
10657: sub rndseed_64bit5 {
10658: my ($symb,$courseid,$domain,$username)=@_;
10659: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10660: return "$num1:$num2";
10661: }
10662:
10663: sub rndseed_CODE_64bit {
10664: my ($symb,$courseid,$domain,$username)=@_;
10665: {
10666: use integer;
10667: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10668: my $symbseed=numval2($symb);
10669: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10670: my $CODEseed=numval(&getCODE());
10671: my $courseseed=unpack("%32S*",$courseid.' ');
10672: my $num1=$symbseed+$CODEchck;
10673: my $num2=$CODEseed+$courseseed+$symbchck;
10674: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10675: #&logthis("rndseed :$num1:$num2:$symb");
10676: if ($_64bit) { $num1=(($num1<<32)>>32); }
10677: if ($_64bit) { $num2=(($num2<<32)>>32); }
10678: return "$num1:$num2";
10679: }
10680: }
10681:
10682: sub rndseed_CODE_64bit4 {
10683: my ($symb,$courseid,$domain,$username)=@_;
10684: {
10685: use integer;
10686: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10687: my $symbseed=numval3($symb);
10688: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10689: my $CODEseed=numval3(&getCODE());
10690: my $courseseed=unpack("%32S*",$courseid.' ');
10691: my $num1=$symbseed+$CODEchck;
10692: my $num2=$CODEseed+$courseseed+$symbchck;
10693: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10694: #&logthis("rndseed :$num1:$num2:$symb");
10695: if ($_64bit) { $num1=(($num1<<32)>>32); }
10696: if ($_64bit) { $num2=(($num2<<32)>>32); }
10697: return "$num1:$num2";
10698: }
10699: }
10700:
10701: sub rndseed_CODE_64bit5 {
10702: my ($symb,$courseid,$domain,$username)=@_;
10703: my $code = &getCODE();
10704: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10705: return "$num1:$num2";
10706: }
10707:
10708: sub setup_random_from_rndseed {
10709: my ($rndseed)=@_;
10710: if ($rndseed =~/([,:])/) {
10711: my ($num1,$num2)=split(/[,:]/,$rndseed);
10712: &Math::Random::random_set_seed(abs($num1),abs($num2));
10713: } else {
10714: &Math::Random::random_set_seed_from_phrase($rndseed);
10715: }
10716: }
10717:
10718: sub latest_receipt_algorithm_id {
10719: return 'receipt3';
10720: }
10721:
10722: sub recunique {
10723: my $fucourseid=shift;
10724: my $unique;
10725: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10726: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10727: $unique=$env{"course.$fucourseid.internal.encseed"};
10728: } else {
10729: $unique=$perlvar{'lonReceipt'};
10730: }
10731: return unpack("%32C*",$unique);
10732: }
10733:
10734: sub recprefix {
10735: my $fucourseid=shift;
10736: my $prefix;
10737: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10738: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10739: $prefix=$env{"course.$fucourseid.internal.encpref"};
10740: } else {
10741: $prefix=$perlvar{'lonHostID'};
10742: }
10743: return unpack("%32C*",$prefix);
10744: }
10745:
10746: sub ireceipt {
10747: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10748:
10749: my $return =&recprefix($fucourseid).'-';
10750:
10751: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10752: $env{'request.state'} eq 'construct') {
10753: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10754: return $return;
10755: }
10756:
10757: my $cuname=unpack("%32C*",$funame);
10758: my $cudom=unpack("%32C*",$fudom);
10759: my $cucourseid=unpack("%32C*",$fucourseid);
10760: my $cusymb=unpack("%32C*",$fusymb);
10761: my $cunique=&recunique($fucourseid);
10762: my $cpart=unpack("%32S*",$part);
10763: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10764:
10765: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10766:
10767: $return.= ($cunique%$cuname+
10768: $cunique%$cudom+
10769: $cusymb%$cuname+
10770: $cusymb%$cudom+
10771: $cucourseid%$cuname+
10772: $cucourseid%$cudom+
10773: $cpart%$cuname+
10774: $cpart%$cudom);
10775: } else {
10776: $return.= ($cunique%$cuname+
10777: $cunique%$cudom+
10778: $cusymb%$cuname+
10779: $cusymb%$cudom+
10780: $cucourseid%$cuname+
10781: $cucourseid%$cudom);
10782: }
10783: return $return;
10784: }
10785:
10786: sub receipt {
10787: my ($part)=@_;
10788: my ($symb,$courseid,$domain,$name) = &whichuser();
10789: return &ireceipt($name,$domain,$courseid,$symb,$part);
10790: }
10791:
10792: sub whichuser {
10793: my ($passedsymb)=@_;
10794: my ($symb,$courseid,$domain,$name,$publicuser);
10795: if (defined($env{'form.grade_symb'})) {
10796: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10797: my $allowed=&allowed('vgr',$tmp_courseid);
10798: if (!$allowed &&
10799: exists($env{'request.course.sec'}) &&
10800: $env{'request.course.sec'} !~ /^\s*$/) {
10801: $allowed=&allowed('vgr',$tmp_courseid.
10802: '/'.$env{'request.course.sec'});
10803: }
10804: if ($allowed) {
10805: ($symb)=&get_env_multiple('form.grade_symb');
10806: $courseid=$tmp_courseid;
10807: ($domain)=&get_env_multiple('form.grade_domain');
10808: ($name)=&get_env_multiple('form.grade_username');
10809: return ($symb,$courseid,$domain,$name,$publicuser);
10810: }
10811: }
10812: if (!$passedsymb) {
10813: $symb=&symbread();
10814: } else {
10815: $symb=$passedsymb;
10816: }
10817: $courseid=$env{'request.course.id'};
10818: $domain=$env{'user.domain'};
10819: $name=$env{'user.name'};
10820: if ($name eq 'public' && $domain eq 'public') {
10821: if (!defined($env{'form.username'})) {
10822: $env{'form.username'}.=time.rand(10000000);
10823: }
10824: $name.=$env{'form.username'};
10825: }
10826: return ($symb,$courseid,$domain,$name,$publicuser);
10827:
10828: }
10829:
10830: # ------------------------------------------------------------ Serves up a file
10831: # returns either the contents of the file or
10832: # -1 if the file doesn't exist
10833: #
10834: # if the target is a file that was uploaded via DOCS,
10835: # a check will be made to see if a current copy exists on the local server,
10836: # if it does this will be served, otherwise a copy will be retrieved from
10837: # the home server for the course and stored in /home/httpd/html/userfiles on
10838: # the local server.
10839:
10840: sub getfile {
10841: my ($file) = @_;
10842: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10843: &repcopy($file);
10844: return &readfile($file);
10845: }
10846:
10847: sub repcopy_userfile {
10848: my ($file)=@_;
10849: my $londocroot = $perlvar{'lonDocRoot'};
10850: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10851: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10852: my ($cdom,$cnum,$filename) =
10853: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10854: my $uri="/uploaded/$cdom/$cnum/$filename";
10855: if (-e "$file") {
10856: # we already have a local copy, check it out
10857: my @fileinfo = stat($file);
10858: my $rtncode;
10859: my $info;
10860: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
10861: if ($lwpresp ne 'ok') {
10862: # there is no such file anymore, even though we had a local copy
10863: if ($rtncode eq '404') {
10864: unlink($file);
10865: }
10866: return -1;
10867: }
10868: if ($info < $fileinfo[9]) {
10869: # nice, the file we have is up-to-date, just say okay
10870: return 'ok';
10871: } else {
10872: # the file is outdated, get rid of it
10873: unlink($file);
10874: }
10875: }
10876: # one way or the other, at this point, we don't have the file
10877: # construct the correct path for the file
10878: my @parts = ($cdom,$cnum);
10879: if ($filename =~ m|^(.+)/[^/]+$|) {
10880: push @parts, split(/\//,$1);
10881: }
10882: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
10883: foreach my $part (@parts) {
10884: $path .= '/'.$part;
10885: if (!-e $path) {
10886: mkdir($path,0770);
10887: }
10888: }
10889: # now the path exists for sure
10890: # get a user agent
10891: my $ua=new LWP::UserAgent;
10892: my $transferfile=$file.'.in.transfer';
10893: # FIXME: this should flock
10894: if (-e $transferfile) { return 'ok'; }
10895: my $request;
10896: $uri=~s/^\///;
10897: my $homeserver = &homeserver($cnum,$cdom);
10898: my $protocol = $protocol{$homeserver};
10899: $protocol = 'http' if ($protocol ne 'https');
10900: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
10901: my $response=$ua->request($request,$transferfile);
10902: # did it work?
10903: if ($response->is_error()) {
10904: unlink($transferfile);
10905: &logthis("Userfile repcopy failed for $uri");
10906: return -1;
10907: }
10908: # worked, rename the transfer file
10909: rename($transferfile,$file);
10910: return 'ok';
10911: }
10912:
10913: sub tokenwrapper {
10914: my $uri=shift;
10915: $uri=~s|^https?\://([^/]+)||;
10916: $uri=~s|^/||;
10917: $env{'user.environment'}=~/\/([^\/]+)\.id/;
10918: my $token=$1;
10919: my (undef,$udom,$uname,$file)=split('/',$uri,4);
10920: if ($udom && $uname && $file) {
10921: $file=~s|(\?\.*)*$||;
10922: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
10923: my $homeserver = &homeserver($uname,$udom);
10924: my $protocol = $protocol{$homeserver};
10925: $protocol = 'http' if ($protocol ne 'https');
10926: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
10927: (($uri=~/\?/)?'&':'?').'token='.$token.
10928: '&tokenissued='.$perlvar{'lonHostID'};
10929: } else {
10930: return '/adm/notfound.html';
10931: }
10932: }
10933:
10934: # call with reqtype HEAD: get last modification time
10935: # call with reqtype GET: get the file contents
10936: # Do not call this with reqtype GET for large files! It loads everything into memory
10937: #
10938: sub getuploaded {
10939: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
10940: $uri=~s/^\///;
10941: my $homeserver = &homeserver($cnum,$cdom);
10942: my $protocol = $protocol{$homeserver};
10943: $protocol = 'http' if ($protocol ne 'https');
10944: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
10945: my $ua=new LWP::UserAgent;
10946: my $request=new HTTP::Request($reqtype,$uri);
10947: my $response=$ua->request($request);
10948: $$rtncode = $response->code;
10949: if (! $response->is_success()) {
10950: return 'failed';
10951: }
10952: if ($reqtype eq 'HEAD') {
10953: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
10954: } elsif ($reqtype eq 'GET') {
10955: $$info = $response->content;
10956: }
10957: return 'ok';
10958: }
10959:
10960: sub readfile {
10961: my $file = shift;
10962: if ( (! -e $file ) || ($file eq '') ) { return -1; };
10963: my $fh;
10964: open($fh,"<$file");
10965: my $a='';
10966: while (my $line = <$fh>) { $a .= $line; }
10967: return $a;
10968: }
10969:
10970: sub filelocation {
10971: my ($dir,$file) = @_;
10972: my $location;
10973: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
10974:
10975: if ($file =~ m-^/adm/-) {
10976: $file=~s-^/adm/wrapper/-/-;
10977: $file=~s-^/adm/coursedocs/showdoc/-/-;
10978: }
10979:
10980: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
10981: $location = $file;
10982: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
10983: my ($udom,$uname,$filename)=
10984: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
10985: my $home=&homeserver($uname,$udom);
10986: my $is_me=0;
10987: my @ids=¤t_machine_ids();
10988: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
10989: if ($is_me) {
10990: $location=propath($udom,$uname).'/userfiles/'.$filename;
10991: } else {
10992: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
10993: $udom.'/'.$uname.'/'.$filename;
10994: }
10995: } elsif ($file =~ m-^/adm/-) {
10996: $location = $perlvar{'lonDocRoot'}.'/'.$file;
10997: } else {
10998: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10999: $file=~s:^/(res|priv)/:/:;
11000: my $space=$1;
11001: if ( !( $file =~ m:^/:) ) {
11002: $location = $dir. '/'.$file;
11003: } else {
11004: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11005: }
11006: }
11007: $location=~s://+:/:g; # remove duplicate /
11008: while ($location=~m{/\.\./}) {
11009: if ($location =~ m{/[^/]+/\.\./}) {
11010: $location=~ s{/[^/]+/\.\./}{/}g;
11011: } else {
11012: $location=~ s{/\.\./}{/}g;
11013: }
11014: } #remove dir/..
11015: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11016: return $location;
11017: }
11018:
11019: sub hreflocation {
11020: my ($dir,$file)=@_;
11021: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11022: $file=filelocation($dir,$file);
11023: } elsif ($file=~m-^/adm/-) {
11024: $file=~s-^/adm/wrapper/-/-;
11025: $file=~s-^/adm/coursedocs/showdoc/-/-;
11026: }
11027: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11028: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11029: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11030: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11031: {/uploaded/$1/$2/}x;
11032: }
11033: if ($file=~ m{^/userfiles/}) {
11034: $file =~ s{^/userfiles/}{/uploaded/};
11035: }
11036: return $file;
11037: }
11038:
11039:
11040:
11041:
11042:
11043: sub current_machine_domains {
11044: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11045: }
11046:
11047: sub machine_domains {
11048: my ($hostname) = @_;
11049: my @domains;
11050: my %hostname = &all_hostnames();
11051: while( my($id, $name) = each(%hostname)) {
11052: # &logthis("-$id-$name-$hostname-");
11053: if ($hostname eq $name) {
11054: push(@domains,&host_domain($id));
11055: }
11056: }
11057: return @domains;
11058: }
11059:
11060: sub current_machine_ids {
11061: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11062: }
11063:
11064: sub machine_ids {
11065: my ($hostname) = @_;
11066: $hostname ||= &hostname($perlvar{'lonHostID'});
11067: my @ids;
11068: my %name_to_host = &all_names();
11069: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11070: return @{ $name_to_host{$hostname} };
11071: }
11072: return;
11073: }
11074:
11075: sub additional_machine_domains {
11076: my @domains;
11077: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11078: while( my $line = <$fh>) {
11079: $line =~ s/\s//g;
11080: push(@domains,$line);
11081: }
11082: return @domains;
11083: }
11084:
11085: sub default_login_domain {
11086: my $domain = $perlvar{'lonDefDomain'};
11087: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11088: foreach my $posdom (¤t_machine_domains(),
11089: &additional_machine_domains()) {
11090: if (lc($posdom) eq lc($testdomain)) {
11091: $domain=$posdom;
11092: last;
11093: }
11094: }
11095: return $domain;
11096: }
11097:
11098: # ------------------------------------------------------------- Declutters URLs
11099:
11100: sub declutter {
11101: my $thisfn=shift;
11102: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11103: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11104: $thisfn=~s/^\///;
11105: $thisfn=~s|^adm/wrapper/||;
11106: $thisfn=~s|^adm/coursedocs/showdoc/||;
11107: $thisfn=~s/^res\///;
11108: $thisfn=~s/^priv\///;
11109: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11110: $thisfn=~s/\?.+$//;
11111: }
11112: return $thisfn;
11113: }
11114:
11115: # ------------------------------------------------------------- Clutter up URLs
11116:
11117: sub clutter {
11118: my $thisfn='/'.&declutter(shift);
11119: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11120: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11121: $thisfn='/res'.$thisfn;
11122: }
11123: if ($thisfn !~m|^/adm|) {
11124: if ($thisfn =~ m|^/ext/|) {
11125: $thisfn='/adm/wrapper'.$thisfn;
11126: } else {
11127: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11128: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11129: if ($embstyle eq 'ssi'
11130: || ($embstyle eq 'hdn')
11131: || ($embstyle eq 'rat')
11132: || ($embstyle eq 'prv')
11133: || ($embstyle eq 'ign')) {
11134: #do nothing with these
11135: } elsif (($embstyle eq 'img')
11136: || ($embstyle eq 'emb')
11137: || ($embstyle eq 'wrp')) {
11138: $thisfn='/adm/wrapper'.$thisfn;
11139: } elsif ($embstyle eq 'unk'
11140: && $thisfn!~/\.(sequence|page)$/) {
11141: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11142: } else {
11143: # &logthis("Got a blank emb style");
11144: }
11145: }
11146: }
11147: return $thisfn;
11148: }
11149:
11150: sub clutter_with_no_wrapper {
11151: my $uri = &clutter(shift);
11152: if ($uri =~ m-^/adm/-) {
11153: $uri =~ s-^/adm/wrapper/-/-;
11154: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11155: }
11156: return $uri;
11157: }
11158:
11159: sub freeze_escape {
11160: my ($value)=@_;
11161: if (ref($value)) {
11162: $value=&nfreeze($value);
11163: return '__FROZEN__'.&escape($value);
11164: }
11165: return &escape($value);
11166: }
11167:
11168:
11169: sub thaw_unescape {
11170: my ($value)=@_;
11171: if ($value =~ /^__FROZEN__/) {
11172: substr($value,0,10,undef);
11173: $value=&unescape($value);
11174: return &thaw($value);
11175: }
11176: return &unescape($value);
11177: }
11178:
11179: sub correct_line_ends {
11180: my ($result)=@_;
11181: $$result =~s/\r\n/\n/mg;
11182: $$result =~s/\r/\n/mg;
11183: }
11184: # ================================================================ Main Program
11185:
11186: sub goodbye {
11187: &logthis("Starting Shut down");
11188: #not converted to using infrastruture and probably shouldn't be
11189: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11190: #converted
11191: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11192: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11193: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11194: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11195: #1.1 only
11196: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11197: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11198: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11199: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11200: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11201: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11202: &logthis(sprintf("%-20s is %s",'hits',$hits));
11203: &flushcourselogs();
11204: &logthis("Shutting down");
11205: }
11206:
11207: sub get_dns {
11208: my ($url,$func,$ignore_cache) = @_;
11209: if (!$ignore_cache) {
11210: my ($content,$cached)=
11211: &Apache::lonnet::is_cached_new('dns',$url);
11212: if ($cached) {
11213: &$func($content);
11214: return;
11215: }
11216: }
11217:
11218: my %alldns;
11219: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11220: foreach my $dns (<$config>) {
11221: next if ($dns !~ /^\^(\S*)/x);
11222: my $line = $1;
11223: my ($host,$protocol) = split(/:/,$line);
11224: if ($protocol ne 'https') {
11225: $protocol = 'http';
11226: }
11227: $alldns{$host} = $protocol;
11228: }
11229: while (%alldns) {
11230: my ($dns) = keys(%alldns);
11231: my $ua=new LWP::UserAgent;
11232: $ua->timeout(30);
11233: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11234: my $response=$ua->request($request);
11235: delete($alldns{$dns});
11236: next if ($response->is_error());
11237: my @content = split("\n",$response->content);
11238: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
11239: &$func(\@content);
11240: return;
11241: }
11242: close($config);
11243: my $which = (split('/',$url))[3];
11244: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11245: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11246: my @content = <$config>;
11247: &$func(\@content);
11248: return;
11249: }
11250: # ------------------------------------------------------------ Read domain file
11251: {
11252: my $loaded;
11253: my %domain;
11254:
11255: sub parse_domain_tab {
11256: my ($lines) = @_;
11257: foreach my $line (@$lines) {
11258: next if ($line =~ /^(\#|\s*$ )/x);
11259:
11260: chomp($line);
11261: my ($name,@elements) = split(/:/,$line,9);
11262: my %this_domain;
11263: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11264: 'lang_def', 'city', 'longi', 'lati',
11265: 'primary') {
11266: $this_domain{$field} = shift(@elements);
11267: }
11268: $domain{$name} = \%this_domain;
11269: }
11270: }
11271:
11272: sub reset_domain_info {
11273: undef($loaded);
11274: undef(%domain);
11275: }
11276:
11277: sub load_domain_tab {
11278: my ($ignore_cache) = @_;
11279: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11280: my $fh;
11281: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11282: my @lines = <$fh>;
11283: &parse_domain_tab(\@lines);
11284: }
11285: close($fh);
11286: $loaded = 1;
11287: }
11288:
11289: sub domain {
11290: &load_domain_tab() if (!$loaded);
11291:
11292: my ($name,$what) = @_;
11293: return if ( !exists($domain{$name}) );
11294:
11295: if (!$what) {
11296: return $domain{$name}{'description'};
11297: }
11298: return $domain{$name}{$what};
11299: }
11300:
11301: sub domain_info {
11302: &load_domain_tab() if (!$loaded);
11303: return %domain;
11304: }
11305:
11306: }
11307:
11308:
11309: # ------------------------------------------------------------- Read hosts file
11310: {
11311: my %hostname;
11312: my %hostdom;
11313: my %libserv;
11314: my $loaded;
11315: my %name_to_host;
11316: my %internetdom;
11317: my %LC_dns_serv;
11318:
11319: sub parse_hosts_tab {
11320: my ($file) = @_;
11321: foreach my $configline (@$file) {
11322: next if ($configline =~ /^(\#|\s*$ )/x);
11323: chomp($configline);
11324: if ($configline =~ /^\^/) {
11325: if ($configline =~ /^\^([\w.\-]+)/) {
11326: $LC_dns_serv{$1} = 1;
11327: }
11328: next;
11329: }
11330: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11331: $name=~s/\s//g;
11332: if ($id && $domain && $role && $name) {
11333: $hostname{$id}=$name;
11334: push(@{$name_to_host{$name}}, $id);
11335: $hostdom{$id}=$domain;
11336: if ($role eq 'library') { $libserv{$id}=$name; }
11337: if (defined($protocol)) {
11338: if ($protocol eq 'https') {
11339: $protocol{$id} = $protocol;
11340: } else {
11341: $protocol{$id} = 'http';
11342: }
11343: } else {
11344: $protocol{$id} = 'http';
11345: }
11346: if (defined($intdom)) {
11347: $internetdom{$id} = $intdom;
11348: }
11349: }
11350: }
11351: }
11352:
11353: sub reset_hosts_info {
11354: &purge_remembered();
11355: &reset_domain_info();
11356: &reset_hosts_ip_info();
11357: undef(%name_to_host);
11358: undef(%hostname);
11359: undef(%hostdom);
11360: undef(%libserv);
11361: undef($loaded);
11362: }
11363:
11364: sub load_hosts_tab {
11365: my ($ignore_cache) = @_;
11366: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11367: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11368: my @config = <$config>;
11369: &parse_hosts_tab(\@config);
11370: close($config);
11371: $loaded=1;
11372: }
11373:
11374: sub hostname {
11375: &load_hosts_tab() if (!$loaded);
11376:
11377: my ($lonid) = @_;
11378: return $hostname{$lonid};
11379: }
11380:
11381: sub all_hostnames {
11382: &load_hosts_tab() if (!$loaded);
11383:
11384: return %hostname;
11385: }
11386:
11387: sub all_names {
11388: &load_hosts_tab() if (!$loaded);
11389:
11390: return %name_to_host;
11391: }
11392:
11393: sub all_host_domain {
11394: &load_hosts_tab() if (!$loaded);
11395: return %hostdom;
11396: }
11397:
11398: sub is_library {
11399: &load_hosts_tab() if (!$loaded);
11400:
11401: return exists($libserv{$_[0]});
11402: }
11403:
11404: sub all_library {
11405: &load_hosts_tab() if (!$loaded);
11406:
11407: return %libserv;
11408: }
11409:
11410: sub unique_library {
11411: #2x reverse removes all hostnames that appear more than once
11412: my %unique = reverse &all_library();
11413: return reverse %unique;
11414: }
11415:
11416: sub get_servers {
11417: &load_hosts_tab() if (!$loaded);
11418:
11419: my ($domain,$type) = @_;
11420: my %possible_hosts = ($type eq 'library') ? %libserv
11421: : %hostname;
11422: my %result;
11423: if (ref($domain) eq 'ARRAY') {
11424: while ( my ($host,$hostname) = each(%possible_hosts)) {
11425: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11426: $result{$host} = $hostname;
11427: }
11428: }
11429: } else {
11430: while ( my ($host,$hostname) = each(%possible_hosts)) {
11431: if ($hostdom{$host} eq $domain) {
11432: $result{$host} = $hostname;
11433: }
11434: }
11435: }
11436: return %result;
11437: }
11438:
11439: sub get_unique_servers {
11440: my %unique = reverse &get_servers(@_);
11441: return reverse %unique;
11442: }
11443:
11444: sub host_domain {
11445: &load_hosts_tab() if (!$loaded);
11446:
11447: my ($lonid) = @_;
11448: return $hostdom{$lonid};
11449: }
11450:
11451: sub all_domains {
11452: &load_hosts_tab() if (!$loaded);
11453:
11454: my %seen;
11455: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11456: return @uniq;
11457: }
11458:
11459: sub internet_dom {
11460: &load_hosts_tab() if (!$loaded);
11461:
11462: my ($lonid) = @_;
11463: return $internetdom{$lonid};
11464: }
11465:
11466: sub is_LC_dns {
11467: &load_hosts_tab() if (!$loaded);
11468:
11469: my ($hostname) = @_;
11470: return exists($LC_dns_serv{$hostname});
11471: }
11472:
11473: }
11474:
11475: {
11476: my %iphost;
11477: my %name_to_ip;
11478: my %lonid_to_ip;
11479:
11480: sub get_hosts_from_ip {
11481: my ($ip) = @_;
11482: my %iphosts = &get_iphost();
11483: if (ref($iphosts{$ip})) {
11484: return @{$iphosts{$ip}};
11485: }
11486: return;
11487: }
11488:
11489: sub reset_hosts_ip_info {
11490: undef(%iphost);
11491: undef(%name_to_ip);
11492: undef(%lonid_to_ip);
11493: }
11494:
11495: sub get_host_ip {
11496: my ($lonid) = @_;
11497: if (exists($lonid_to_ip{$lonid})) {
11498: return $lonid_to_ip{$lonid};
11499: }
11500: my $name=&hostname($lonid);
11501: my $ip = gethostbyname($name);
11502: return if (!$ip || length($ip) ne 4);
11503: $ip=inet_ntoa($ip);
11504: $name_to_ip{$name} = $ip;
11505: $lonid_to_ip{$lonid} = $ip;
11506: return $ip;
11507: }
11508:
11509: sub get_iphost {
11510: my ($ignore_cache) = @_;
11511:
11512: if (!$ignore_cache) {
11513: if (%iphost) {
11514: return %iphost;
11515: }
11516: my ($ip_info,$cached)=
11517: &Apache::lonnet::is_cached_new('iphost','iphost');
11518: if ($cached) {
11519: %iphost = %{$ip_info->[0]};
11520: %name_to_ip = %{$ip_info->[1]};
11521: %lonid_to_ip = %{$ip_info->[2]};
11522: return %iphost;
11523: }
11524: }
11525:
11526: # get yesterday's info for fallback
11527: my %old_name_to_ip;
11528: my ($ip_info,$cached)=
11529: &Apache::lonnet::is_cached_new('iphost','iphost');
11530: if ($cached) {
11531: %old_name_to_ip = %{$ip_info->[1]};
11532: }
11533:
11534: my %name_to_host = &all_names();
11535: foreach my $name (keys(%name_to_host)) {
11536: my $ip;
11537: if (!exists($name_to_ip{$name})) {
11538: $ip = gethostbyname($name);
11539: if (!$ip || length($ip) ne 4) {
11540: if (defined($old_name_to_ip{$name})) {
11541: $ip = $old_name_to_ip{$name};
11542: &logthis("Can't find $name defaulting to old $ip");
11543: } else {
11544: &logthis("Name $name no IP found");
11545: next;
11546: }
11547: } else {
11548: $ip=inet_ntoa($ip);
11549: }
11550: $name_to_ip{$name} = $ip;
11551: } else {
11552: $ip = $name_to_ip{$name};
11553: }
11554: foreach my $id (@{ $name_to_host{$name} }) {
11555: $lonid_to_ip{$id} = $ip;
11556: }
11557: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11558: }
11559: &Apache::lonnet::do_cache_new('iphost','iphost',
11560: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11561: 48*60*60);
11562:
11563: return %iphost;
11564: }
11565:
11566: #
11567: # Given a DNS returns the loncapa host name for that DNS
11568: #
11569: sub host_from_dns {
11570: my ($dns) = @_;
11571: my @hosts;
11572: my $ip;
11573:
11574: if (exists($name_to_ip{$dns})) {
11575: $ip = $name_to_ip{$dns};
11576: }
11577: if (!$ip) {
11578: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11579: if (length($ip) == 4) {
11580: $ip = &IO::Socket::inet_ntoa($ip);
11581: }
11582: }
11583: if ($ip) {
11584: @hosts = get_hosts_from_ip($ip);
11585: return $hosts[0];
11586: }
11587: return undef;
11588: }
11589:
11590: sub get_internet_names {
11591: my ($lonid) = @_;
11592: return if ($lonid eq '');
11593: my ($idnref,$cached)=
11594: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11595: if ($cached) {
11596: return $idnref;
11597: }
11598: my $ip = &get_host_ip($lonid);
11599: my @hosts = &get_hosts_from_ip($ip);
11600: my %iphost = &get_iphost();
11601: my (@idns,%seen);
11602: foreach my $id (@hosts) {
11603: my $dom = &host_domain($id);
11604: my $prim_id = &domain($dom,'primary');
11605: my $prim_ip = &get_host_ip($prim_id);
11606: next if ($seen{$prim_ip});
11607: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11608: foreach my $id (@{$iphost{$prim_ip}}) {
11609: my $intdom = &internet_dom($id);
11610: unless (grep(/^\Q$intdom\E$/,@idns)) {
11611: push(@idns,$intdom);
11612: }
11613: }
11614: }
11615: $seen{$prim_ip} = 1;
11616: }
11617: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11618: }
11619:
11620: }
11621:
11622: sub all_loncaparevs {
11623: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11624: }
11625:
11626: BEGIN {
11627:
11628: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11629: unless ($readit) {
11630: {
11631: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11632: %perlvar = (%perlvar,%{$configvars});
11633: }
11634:
11635:
11636: # ------------------------------------------------------ Read spare server file
11637: {
11638: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11639:
11640: while (my $configline=<$config>) {
11641: chomp($configline);
11642: if ($configline) {
11643: my ($host,$type) = split(':',$configline,2);
11644: if (!defined($type) || $type eq '') { $type = 'default' };
11645: push(@{ $spareid{$type} }, $host);
11646: }
11647: }
11648: close($config);
11649: }
11650: # ------------------------------------------------------------ Read permissions
11651: {
11652: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11653:
11654: while (my $configline=<$config>) {
11655: chomp($configline);
11656: if ($configline) {
11657: my ($role,$perm)=split(/ /,$configline);
11658: if ($perm ne '') { $pr{$role}=$perm; }
11659: }
11660: }
11661: close($config);
11662: }
11663:
11664: # -------------------------------------------- Read plain texts for permissions
11665: {
11666: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11667:
11668: while (my $configline=<$config>) {
11669: chomp($configline);
11670: if ($configline) {
11671: my ($short,@plain)=split(/:/,$configline);
11672: %{$prp{$short}} = ();
11673: if (@plain > 0) {
11674: $prp{$short}{'std'} = $plain[0];
11675: for (my $i=1; $i<@plain; $i++) {
11676: $prp{$short}{'alt'.$i} = $plain[$i];
11677: }
11678: }
11679: }
11680: }
11681: close($config);
11682: }
11683:
11684: # ---------------------------------------------------------- Read package table
11685: {
11686: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11687:
11688: while (my $configline=<$config>) {
11689: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11690: chomp($configline);
11691: my ($short,$plain)=split(/:/,$configline);
11692: my ($pack,$name)=split(/\&/,$short);
11693: if ($plain ne '') {
11694: $packagetab{$pack.'&'.$name.'&name'}=$name;
11695: $packagetab{$short}=$plain;
11696: }
11697: }
11698: close($config);
11699: }
11700:
11701: # ---------------------------------------------------------- Read loncaparev table
11702: {
11703: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11704: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11705: while (my $configline=<$config>) {
11706: chomp($configline);
11707: my ($hostid,$loncaparev)=split(/:/,$configline);
11708: $loncaparevs{$hostid}=$loncaparev;
11709: }
11710: close($config);
11711: }
11712: }
11713: }
11714:
11715: # ---------------------------------------------------------- Read serverhostID table
11716: {
11717: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11718: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11719: while (my $configline=<$config>) {
11720: chomp($configline);
11721: my ($name,$id)=split(/:/,$configline);
11722: $serverhomeIDs{$name}=$id;
11723: }
11724: close($config);
11725: }
11726: }
11727: }
11728:
11729: {
11730: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11731: if (-e $file) {
11732: my $parser = HTML::LCParser->new($file);
11733: while (my $token = $parser->get_token()) {
11734: if ($token->[0] eq 'S') {
11735: my $item = $token->[1];
11736: my $name = $token->[2]{'name'};
11737: my $value = $token->[2]{'value'};
11738: if ($item ne '' && $name ne '' && $value ne '') {
11739: my $release = $parser->get_text();
11740: $release =~ s/(^\s*|\s*$ )//gx;
11741: $needsrelease{$item.':'.$name.':'.$value} = $release;
11742: }
11743: }
11744: }
11745: }
11746: }
11747:
11748: # ---------------------------------------------------------- Read managers table
11749: {
11750: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11751: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11752: while (my $configline=<$config>) {
11753: chomp($configline);
11754: next if ($configline =~ /^\#/);
11755: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11756: $managerstab{$configline} = 1;
11757: }
11758: }
11759: close($config);
11760: }
11761: }
11762: }
11763:
11764: # ------------- set up temporary directory
11765: {
11766: $tmpdir = LONCAPA::tempdir();
11767:
11768: }
11769:
11770: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11771: 'compress_threshold'=> 20_000,
11772: });
11773:
11774: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11775: $dumpcount=0;
11776: $locknum=0;
11777:
11778: &logtouch();
11779: &logthis('<font color="yellow">INFO: Read configuration</font>');
11780: $readit=1;
11781: {
11782: use integer;
11783: my $test=(2**32)+1;
11784: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11785: &logthis(" Detected 64bit platform ($_64bit)");
11786: }
11787: }
11788: }
11789:
11790: 1;
11791: __END__
11792:
11793: =pod
11794:
11795: =head1 NAME
11796:
11797: Apache::lonnet - Subroutines to ask questions about things in the network.
11798:
11799: =head1 SYNOPSIS
11800:
11801: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11802:
11803: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11804:
11805: Common parameters:
11806:
11807: =over 4
11808:
11809: =item *
11810:
11811: $uname : an internal username (if $cname expecting a course Id specifically)
11812:
11813: =item *
11814:
11815: $udom : a domain (if $cdom expecting a course's domain specifically)
11816:
11817: =item *
11818:
11819: $symb : a resource instance identifier
11820:
11821: =item *
11822:
11823: $namespace : the name of a .db file that contains the data needed or
11824: being set.
11825:
11826: =back
11827:
11828: =head1 OVERVIEW
11829:
11830: lonnet provides subroutines which interact with the
11831: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11832: about classes, users, and resources.
11833:
11834: For many of these objects you can also use this to store data about
11835: them or modify them in various ways.
11836:
11837: =head2 Symbs
11838:
11839: To identify a specific instance of a resource, LON-CAPA uses symbols
11840: or "symbs"X<symb>. These identifiers are built from the URL of the
11841: map, the resource number of the resource in the map, and the URL of
11842: the resource itself. The latter is somewhat redundant, but might help
11843: if maps change.
11844:
11845: An example is
11846:
11847: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11848:
11849: The respective map entry is
11850:
11851: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11852: title="Problem 2">
11853: </resource>
11854:
11855: Symbs are used by the random number generator, as well as to store and
11856: restore data specific to a certain instance of for example a problem.
11857:
11858: =head2 Storing And Retrieving Data
11859:
11860: X<store()>X<cstore()>X<restore()>Three of the most important functions
11861: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
11862: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
11863: is is the non-critical message twin of cstore. These functions are for
11864: handlers to store a perl hash to a user's permanent data space in an
11865: easy manner, and to retrieve it again on another call. It is expected
11866: that a handler would use this once at the beginning to retrieve data,
11867: and then again once at the end to send only the new data back.
11868:
11869: The data is stored in the user's data directory on the user's
11870: homeserver under the ID of the course.
11871:
11872: The hash that is returned by restore will have all of the previous
11873: value for all of the elements of the hash.
11874:
11875: Example:
11876:
11877: #creating a hash
11878: my %hash;
11879: $hash{'foo'}='bar';
11880:
11881: #storing it
11882: &Apache::lonnet::cstore(\%hash);
11883:
11884: #changing a value
11885: $hash{'foo'}='notbar';
11886:
11887: #adding a new value
11888: $hash{'bar'}='foo';
11889: &Apache::lonnet::cstore(\%hash);
11890:
11891: #retrieving the hash
11892: my %history=&Apache::lonnet::restore();
11893:
11894: #print the hash
11895: foreach my $key (sort(keys(%history))) {
11896: print("\%history{$key} = $history{$key}");
11897: }
11898:
11899: Will print out:
11900:
11901: %history{1:foo} = bar
11902: %history{1:keys} = foo:timestamp
11903: %history{1:timestamp} = 990455579
11904: %history{2:bar} = foo
11905: %history{2:foo} = notbar
11906: %history{2:keys} = foo:bar:timestamp
11907: %history{2:timestamp} = 990455580
11908: %history{bar} = foo
11909: %history{foo} = notbar
11910: %history{timestamp} = 990455580
11911: %history{version} = 2
11912:
11913: Note that the special hash entries C<keys>, C<version> and
11914: C<timestamp> were added to the hash. C<version> will be equal to the
11915: total number of versions of the data that have been stored. The
11916: C<timestamp> attribute will be the UNIX time the hash was
11917: stored. C<keys> is available in every historical section to list which
11918: keys were added or changed at a specific historical revision of a
11919: hash.
11920:
11921: B<Warning>: do not store the hash that restore returns directly. This
11922: will cause a mess since it will restore the historical keys as if the
11923: were new keys. I.E. 1:foo will become 1:1:foo etc.
11924:
11925: Calling convention:
11926:
11927: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
11928: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
11929:
11930: For more detailed information, see lonnet specific documentation.
11931:
11932: =head1 RETURN MESSAGES
11933:
11934: =over 4
11935:
11936: =item * B<con_lost>: unable to contact remote host
11937:
11938: =item * B<con_delayed>: unable to contact remote host, message will be delivered
11939: when the connection is brought back up
11940:
11941: =item * B<con_failed>: unable to contact remote host and unable to save message
11942: for later delivery
11943:
11944: =item * B<error:>: an error a occurred, a description of the error follows the :
11945:
11946: =item * B<no_such_host>: unable to fund a host associated with the user/domain
11947: that was requested
11948:
11949: =back
11950:
11951: =head1 PUBLIC SUBROUTINES
11952:
11953: =head2 Session Environment Functions
11954:
11955: =over 4
11956:
11957: =item *
11958: X<appenv()>
11959: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
11960: the user envirnoment file, and will be restored for each access this
11961: user makes during this session, also modifies the %env for the current
11962: process. Optional rolesarrayref - if defined contains a reference to an array
11963: of roles which are exempt from the restriction on modifying user.role entries
11964: in the user's environment.db and in %env.
11965:
11966: =item *
11967: X<delenv()>
11968: B<delenv($delthis,$regexp)>: removes all items from the session
11969: environment file that begin with $delthis. If the
11970: optional second arg - $regexp - is true, $delthis is treated as a
11971: regular expression, otherwise \Q$delthis\E is used.
11972: The values are also deleted from the current processes %env.
11973:
11974: =item * get_env_multiple($name)
11975:
11976: gets $name from the %env hash, it seemlessly handles the cases where multiple
11977: values may be defined and end up as an array ref.
11978:
11979: returns an array of values
11980:
11981: =back
11982:
11983: =head2 User Information
11984:
11985: =over 4
11986:
11987: =item *
11988: X<queryauthenticate()>
11989: B<queryauthenticate($uname,$udom)>: try to determine user's current
11990: authentication scheme
11991:
11992: =item *
11993: X<authenticate()>
11994: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
11995: authenticate user from domain's lib servers (first use the current
11996: one). C<$upass> should be the users password.
11997: $checkdefauth is optional (value is 1 if a check should be made to
11998: authenticate user using default authentication method, and allow
11999: account creation if username does not have account in the domain).
12000: $clientcancheckhost is optional (value is 1 if checking whether the
12001: server can host will occur on the client side in lonauth.pm).
12002:
12003: =item *
12004: X<homeserver()>
12005: B<homeserver($uname,$udom)>: find the server which has
12006: the user's directory and files (there must be only one), this caches
12007: the answer, and also caches if there is a borken connection.
12008:
12009: =item *
12010: X<idget()>
12011: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12012: (IDs are a unique resource in a domain, there must be only 1 ID per
12013: username, and only 1 username per ID in a specific domain) (returns
12014: hash: id=>name,id=>name)
12015:
12016: =item *
12017: X<idrget()>
12018: B<idrget($udom,@unames)>: find the IDs behind a list of
12019: usernames (returns hash: name=>id,name=>id)
12020:
12021: =item *
12022: X<idput()>
12023: B<idput($udom,%ids)>: store away a list of names and associated IDs
12024:
12025: =item *
12026: X<rolesinit()>
12027: B<rolesinit($udom,$username)>: get user privileges.
12028: returns user role, first access and timer interval hashes
12029:
12030: =item *
12031: X<privileged()>
12032: B<privileged($username,$domain)>: returns a true if user has a
12033: privileged and active role (i.e. su or dc), false otherwise.
12034:
12035: =item *
12036: X<getsection()>
12037: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12038: course $cname, return section name/number or '' for "not in course"
12039: and '-1' for "no section"
12040:
12041: =item *
12042: X<userenvironment()>
12043: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12044: passed in @what from the requested user's environment, returns a hash
12045:
12046: =item *
12047: X<userlog_query()>
12048: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12049: activity.log file. %filters defines filters applied when parsing the
12050: log file. These can be start or end timestamps, or the type of action
12051: - log to look for Login or Logout events, check for Checkin or
12052: Checkout, role for role selection. The response is in the form
12053: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12054: escaped strings of the action recorded in the activity.log file.
12055:
12056: =back
12057:
12058: =head2 User Roles
12059:
12060: =over 4
12061:
12062: =item *
12063:
12064: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12065: F: full access
12066: U,I,K: authentication modes (cxx only)
12067: '': forbidden
12068: 1: user needs to choose course
12069: 2: browse allowed
12070: A: passphrase authentication needed
12071:
12072: =item *
12073:
12074: constructaccess($url,$setpriv) : check for access to construction space URL
12075:
12076: See if the owner domain and name in the URL match those in the
12077: expected environment. If so, return three element list
12078: ($ownername,$ownerdomain,$ownerhome).
12079:
12080: Otherwise return the null string.
12081:
12082: If second argument 'setpriv' is true, it assigns the privileges,
12083: and returns the same three element list, unless the owner has
12084: blocked "ad hoc" Domain Coordinator access to the Author Space,
12085: in which case the null string is returned.
12086:
12087: =item *
12088:
12089: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12090: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12091: and course level
12092:
12093: =item *
12094:
12095: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12096: (rolesplain.tab); plain text explanation of a user role term.
12097: $type is Course (default) or Community.
12098: If $forcedefault evaluates to true, text returned will be default
12099: text for $type. Otherwise, if this is a course, the text returned
12100: will be a custom name for the role (if defined in the course's
12101: environment). If no custom name is defined the default is returned.
12102:
12103: =item *
12104:
12105: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
12106: All arguments are optional. Returns a hash of a roles, either for
12107: co-author/assistant author roles for a user's Construction Space
12108: (default), or if $context is 'userroles', roles for the user himself,
12109: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12110: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12111: For each key, value is set to colon-separated start and end times for
12112: the role. If no username and domain are specified, will default to
12113: current user/domain. Types, roles, and roledoms are references to arrays
12114: of role statuses (active, future or previous), roles
12115: (e.g., cc,in, st etc.) and domains of the roles which can be used
12116: to restrict the list of roles reported. If no array ref is
12117: provided for types, will default to return only active roles.
12118:
12119: =back
12120:
12121: =head2 User Modification
12122:
12123: =over 4
12124:
12125: =item *
12126:
12127: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12128: user for the level given by URL. Optional start and end dates (leave empty
12129: string or zero for "no date")
12130:
12131: =item *
12132:
12133: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12134: change a users, password, possible return values are: ok,
12135: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12136: refused
12137:
12138: =item *
12139:
12140: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12141:
12142: =item *
12143:
12144: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12145: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12146:
12147: will update user information (firstname,middlename,lastname,generation,
12148: permanentemail), and if forceid is true, student/employee ID also.
12149: A user's institutional affiliation(s) can also be updated.
12150: User information fields will not be overwritten with empty entries
12151: unless the field is included in the $candelete array reference.
12152: This array is included when a single user is modified via "Manage Users",
12153: or when Autoupdate.pl is run by cron in a domain.
12154:
12155: =item *
12156:
12157: modifystudent
12158:
12159: modify a student's enrollment and identification information.
12160: The course id is resolved based on the current users environment.
12161: This means the envoking user must be a course coordinator or otherwise
12162: associated with a course.
12163:
12164: This call is essentially a wrapper for lonnet::modifyuser and
12165: lonnet::modify_student_enrollment
12166:
12167: Inputs:
12168:
12169: =over 4
12170:
12171: =item B<$udom> Student's loncapa domain
12172:
12173: =item B<$uname> Student's loncapa login name
12174:
12175: =item B<$uid> Student/Employee ID
12176:
12177: =item B<$umode> Student's authentication mode
12178:
12179: =item B<$upass> Student's password
12180:
12181: =item B<$first> Student's first name
12182:
12183: =item B<$middle> Student's middle name
12184:
12185: =item B<$last> Student's last name
12186:
12187: =item B<$gene> Student's generation
12188:
12189: =item B<$usec> Student's section in course
12190:
12191: =item B<$end> Unix time of the roles expiration
12192:
12193: =item B<$start> Unix time of the roles start date
12194:
12195: =item B<$forceid> If defined, allow $uid to be changed
12196:
12197: =item B<$desiredhome> server to use as home server for student
12198:
12199: =item B<$email> Student's permanent e-mail address
12200:
12201: =item B<$type> Type of enrollment (auto or manual)
12202:
12203: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12204:
12205: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12206:
12207: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12208:
12209: =item B<$context> role change context (shown in User Management Logs display in a course)
12210:
12211: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12212:
12213: =back
12214:
12215: =item *
12216:
12217: modify_student_enrollment
12218:
12219: Change a students enrollment status in a class. The environment variable
12220: 'role.request.course' must be defined for this function to proceed.
12221:
12222: Inputs:
12223:
12224: =over 4
12225:
12226: =item $udom, students domain
12227:
12228: =item $uname, students name
12229:
12230: =item $uid, students user id
12231:
12232: =item $first, students first name
12233:
12234: =item $middle
12235:
12236: =item $last
12237:
12238: =item $gene
12239:
12240: =item $usec
12241:
12242: =item $end
12243:
12244: =item $start
12245:
12246: =item $type
12247:
12248: =item $locktype
12249:
12250: =item $cid
12251:
12252: =item $selfenroll
12253:
12254: =item $context
12255:
12256: =back
12257:
12258:
12259: =item *
12260:
12261: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12262: custom role; give a custom role to a user for the level given by URL. Specify
12263: name and domain of role author, and role name
12264:
12265: =item *
12266:
12267: revokerole($udom,$uname,$url,$role) : revoke a role for url
12268:
12269: =item *
12270:
12271: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12272:
12273: =back
12274:
12275: =head2 Course Infomation
12276:
12277: =over 4
12278:
12279: =item *
12280:
12281: coursedescription($courseid,$options) : returns a hash of information about the
12282: specified course id, including all environment settings for the
12283: course, the description of the course will be in the hash under the
12284: key 'description'
12285:
12286: $options is an optional parameter that if supplied is a hash reference that controls
12287: what how this function works. It has the following key/values:
12288:
12289: =over 4
12290:
12291: =item freshen_cache
12292:
12293: If defined, and the environment cache for the course is valid, it is
12294: returned in the returned hash.
12295:
12296: =item one_time
12297:
12298: If defined, the last cache time is set to _now_
12299:
12300: =item user
12301:
12302: If defined, the supplied username is used instead of the current user.
12303:
12304:
12305: =back
12306:
12307: =item *
12308:
12309: resdata($name,$domain,$type,@which) : request for current parameter
12310: setting for a specific $type, where $type is either 'course' or 'user',
12311: @what should be a list of parameters to ask about. This routine caches
12312: answers for 5 minutes.
12313:
12314: =item *
12315:
12316: get_courseresdata($courseid, $domain) : dump the entire course resource
12317: data base, returning a hash that is keyed by the resource name and has
12318: values that are the resource value. I believe that the timestamps and
12319: versions are also returned.
12320:
12321:
12322: =back
12323:
12324: =head2 Course Modification
12325:
12326: =over 4
12327:
12328: =item *
12329:
12330: writecoursepref($courseid,%prefs) : write preferences (environment
12331: database) for a course
12332:
12333: =item *
12334:
12335: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12336:
12337: =item *
12338:
12339: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12340:
12341: =item *
12342:
12343: is_course($courseid), is_course($cdom, $cnum)
12344:
12345: Accepts either a combined $courseid (in the form of domain_courseid) or the
12346: two component version $cdom, $cnum. It checks if the specified course exists.
12347:
12348: Returns:
12349: undef if the course doesn't exist, otherwise
12350: in scalar context the combined courseid.
12351: in list context the two components of the course identifier, domain and
12352: courseid.
12353:
12354: =back
12355:
12356: =head2 Resource Subroutines
12357:
12358: =over 4
12359:
12360: =item *
12361:
12362: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12363:
12364: =item *
12365:
12366: repcopy($filename) : subscribes to the requested file, and attempts to
12367: replicate from the owning library server, Might return
12368: 'unavailable', 'not_found', 'forbidden', 'ok', or
12369: 'bad_request', also attempts to grab the metadata for the
12370: resource. Expects the local filesystem pathname
12371: (/home/httpd/html/res/....)
12372:
12373: =back
12374:
12375: =head2 Resource Information
12376:
12377: =over 4
12378:
12379: =item *
12380:
12381: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12382: a vairety of different possible values, $varname should be a request
12383: string, and the other parameters can be used to specify who and what
12384: one is asking about.
12385:
12386: Possible values for $varname are environment.lastname (or other item
12387: from the envirnment hash), user.name (or someother aspect about the
12388: user), resource.0.maxtries (or some other part and parameter of a
12389: resource)
12390:
12391: =item *
12392:
12393: directcondval($number) : get current value of a condition; reads from a state
12394: string
12395:
12396: =item *
12397:
12398: condval($condidx) : value of condition index based on state
12399:
12400: =item *
12401:
12402: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12403: resource's metadata, $what should be either a specific key, or either
12404: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12405: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12406:
12407: this function automatically caches all requests
12408:
12409: =item *
12410:
12411: metadata_query($query,$custom,$customshow) : make a metadata query against the
12412: network of library servers; returns file handle of where SQL and regex results
12413: will be stored for query
12414:
12415: =item *
12416:
12417: symbread($filename) : return symbolic list entry (filename argument optional);
12418: returns the data handle
12419:
12420: =item *
12421:
12422: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12423: and is a possible symb for the URL in $thisfn, and if is an encrypted
12424: resource that the user accessed using /enc/ returns a 1 on success, 0
12425: on failure, user must be in a course, as it assumes the existence of
12426: the course initial hash, and uses $env('request.course.id'}. The third
12427: arg is an optional reference to a scalar. If this arg is passed in the
12428: call to symbverify, it will be set to 1 if the symb has been set to be
12429: encrypted; otherwise it will be null.
12430:
12431: =item *
12432:
12433: symbclean($symb) : removes versions numbers from a symb, returns the
12434: cleaned symb
12435:
12436: =item *
12437:
12438: is_on_map($uri) : checks if the $uri is somewhere on the current
12439: course map, user must be in a course for it to work.
12440:
12441: =item *
12442:
12443: numval($salt) : return random seed value (addend for rndseed)
12444:
12445: =item *
12446:
12447: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12448: a random seed, all arguments are optional, if they aren't sent it uses the
12449: environment to derive them. Note: if symb isn't sent and it can't get one
12450: from &symbread it will use the current time as its return value
12451:
12452: =item *
12453:
12454: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12455: unfakeable, receipt
12456:
12457: =item *
12458:
12459: receipt() : API to ireceipt working off of env values; given out to users
12460:
12461: =item *
12462:
12463: countacc($url) : count the number of accesses to a given URL
12464:
12465: =item *
12466:
12467: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12468:
12469: =item *
12470:
12471: checkin($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 $tcrsid)
12472:
12473: =item *
12474:
12475: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12476:
12477: =item *
12478:
12479: devalidate($symb) : devalidate temporary spreadsheet calculations,
12480: forcing spreadsheet to reevaluate the resource scores next time.
12481:
12482: =back
12483:
12484: =head2 Storing/Retreiving Data
12485:
12486: =over 4
12487:
12488: =item *
12489:
12490: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12491: for this url; hashref needs to be given and should be a \%hashname; the
12492: remaining args aren't required and if they aren't passed or are '' they will
12493: be derived from the env
12494:
12495: =item *
12496:
12497: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12498: uses critical subroutine
12499:
12500: =item *
12501:
12502: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12503: all args are optional
12504:
12505: =item *
12506:
12507: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12508: dumps the complete (or key matching regexp) namespace into a hash
12509: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12510: normally &store()ed into
12511:
12512: $range should be either an integer '100' (give me the first 100
12513: matching records)
12514: or be two integers sperated by a - with no spaces
12515: '30-50' (give me the 30th through the 50th matching
12516: records)
12517:
12518:
12519: =item *
12520:
12521: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12522: replaces a &store() version of data with a replacement set of data
12523: for a particular resource in a namespace passed in the $storehash hash
12524: reference
12525:
12526: =item *
12527:
12528: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12529: works very similar to store/cstore, but all data is stored in a
12530: temporary location and can be reset using tmpreset, $storehash should
12531: be a hash reference, returns nothing on success
12532:
12533: =item *
12534:
12535: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12536: similar to restore, but all data is stored in a temporary location and
12537: can be reset using tmpreset. Returns a hash of values on success,
12538: error string otherwise.
12539:
12540: =item *
12541:
12542: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12543: deltes all keys for $symb form the temporary storage hash.
12544:
12545: =item *
12546:
12547: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12548: reference filled in from namesp ($udom and $uname are optional)
12549:
12550: =item *
12551:
12552: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12553: namesp ($udom and $uname are optional)
12554:
12555: =item *
12556:
12557: dump($namespace,$udom,$uname,$regexp,$range) :
12558: dumps the complete (or key matching regexp) namespace into a hash
12559: ($udom, $uname, $regexp, $range are optional)
12560:
12561: $range should be either an integer '100' (give me the first 100
12562: matching records)
12563: or be two integers sperated by a - with no spaces
12564: '30-50' (give me the 30th through the 50th matching
12565: records)
12566: =item *
12567:
12568: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12569: $store can be a scalar, an array reference, or if the amount to be
12570: incremented is > 1, a hash reference.
12571:
12572: ($udom and $uname are optional)
12573:
12574: =item *
12575:
12576: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12577: ($udom and $uname are optional)
12578:
12579: =item *
12580:
12581: cput($namespace,$storehash,$udom,$uname) : critical put
12582: ($udom and $uname are optional)
12583:
12584: =item *
12585:
12586: newput($namespace,$storehash,$udom,$uname) :
12587:
12588: Attempts to store the items in the $storehash, but only if they don't
12589: currently exist, if this succeeds you can be certain that you have
12590: successfully created a new key value pair in the $namespace db.
12591:
12592:
12593: Args:
12594: $namespace: name of database to store values to
12595: $storehash: hashref to store to the db
12596: $udom: (optional) domain of user containing the db
12597: $uname: (optional) name of user caontaining the db
12598:
12599: Returns:
12600: 'ok' -> succeeded in storing all keys of $storehash
12601: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12602: least <key> already existed in the db (other
12603: requested keys may also already exist)
12604: 'error: <msg>' -> unable to tie the DB or other error occurred
12605: 'con_lost' -> unable to contact request server
12606: 'refused' -> action was not allowed by remote machine
12607:
12608:
12609: =item *
12610:
12611: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12612: reference filled in from namesp (encrypts the return communication)
12613: ($udom and $uname are optional)
12614:
12615: =item *
12616:
12617: log($udom,$name,$home,$message) : write to permanent log for user; use
12618: critical subroutine
12619:
12620: =item *
12621:
12622: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12623: array reference filled in from namespace found in domain level on either
12624: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12625:
12626: =item *
12627:
12628: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12629: domain level either on specified domain server ($uhome) or primary domain
12630: server ($udom and $uhome are optional)
12631:
12632: =item *
12633:
12634: get_domain_defaults($target_domain) : returns hash with defaults for
12635: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12636: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12637: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12638: Values are retrieved from cache (if current), or from domain's configuration.db
12639: (if available), or lastly from values in lonTabs/dns_domain,tab,
12640: or lonTabs/domain.tab.
12641:
12642: %domdefaults = &get_auth_defaults($target_domain);
12643:
12644: =back
12645:
12646: =head2 Network Status Functions
12647:
12648: =over 4
12649:
12650: =item *
12651:
12652: dirlist() : return directory list based on URI (first arg).
12653:
12654: Inputs: 1 required, 5 optional.
12655:
12656: =over
12657:
12658: =item
12659: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12660:
12661: =item
12662: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12663:
12664: =item
12665: $username - username of user/course to be listed. Extracted from $uri if absent.
12666:
12667: =item
12668: $getpropath - boolean: 1 if prepend path using &propath().
12669:
12670: =item
12671: $getuserdir - boolean: 1 if prepend path for "userfiles".
12672:
12673: =item
12674: $alternateRoot - path to prepend in place of path from $uri.
12675:
12676: =back
12677:
12678: Returns: Array of up to two items.
12679:
12680: =over
12681:
12682: a reference to an array of files/subdirectories
12683:
12684: =over
12685:
12686: Each element in the array of files/subdirectories is a & separated list of
12687: item name and the result of running stat on the item. If dirlist was requested
12688: for a file instead of a directory, the item name will be ''. For a directory
12689: listing, if the item is a metadata file, the element will end &N&M
12690: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12691: default copyright set (1).
12692:
12693: =back
12694:
12695: a scalar containing error condition (if encountered).
12696:
12697: =over
12698:
12699: =item
12700: no_host (no homeserver identified for $username:$domain).
12701:
12702: =item
12703: no_such_host (server contacted for listing not identified as valid host).
12704:
12705: =item
12706: con_lost (connection to remote server failed).
12707:
12708: =item
12709: refused (invalid $username:$domain received on lond side).
12710:
12711: =item
12712: no_such_dir (directory at specified path on lond side does not exist).
12713:
12714: =item
12715: empty (directory at specified path on lond side is empty).
12716:
12717: =over
12718:
12719: This is currently not encountered because the &ls3, &ls2,
12720: &ls (_handler) routines on the lond side do not filter out
12721: . and .. from a directory listing.
12722:
12723: =back
12724:
12725: =back
12726:
12727: =back
12728:
12729: =item *
12730:
12731: spareserver() : find server with least workload from spare.tab
12732:
12733:
12734: =item *
12735:
12736: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12737: if there is no corresponding loncapa host.
12738:
12739: =back
12740:
12741:
12742: =head2 Apache Request
12743:
12744: =over 4
12745:
12746: =item *
12747:
12748: ssi($url,%hash) : server side include, does a complete request cycle on url to
12749: localhost, posts hash
12750:
12751: =back
12752:
12753: =head2 Data to String to Data
12754:
12755: =over 4
12756:
12757: =item *
12758:
12759: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12760: and '&' separators, supports elements that are arrayrefs and hashrefs
12761:
12762: =item *
12763:
12764: hashref2str($hashref) : convert a hashref into a string complete with
12765: escaping and '=' and '&' separators, supports elements that are
12766: arrayrefs and hashrefs
12767:
12768: =item *
12769:
12770: arrayref2str($arrayref) : convert an arrayref into a string complete
12771: with escaping and '&' separators, supports elements that are arrayrefs
12772: and hashrefs
12773:
12774: =item *
12775:
12776: str2hash($string) : convert string to hash using unescaping and
12777: splitting on '=' and '&', supports elements that are arrayrefs and
12778: hashrefs
12779:
12780: =item *
12781:
12782: str2array($string) : convert string to hash using unescaping and
12783: splitting on '&', supports elements that are arrayrefs and hashrefs
12784:
12785: =back
12786:
12787: =head2 Logging Routines
12788:
12789:
12790: These routines allow one to make log messages in the lonnet.log and
12791: lonnet.perm logfiles.
12792:
12793: =over 4
12794:
12795: =item *
12796:
12797: logtouch() : make sure the logfile, lonnet.log, exists
12798:
12799: =item *
12800:
12801: logthis() : append message to the normal lonnet.log file, it gets
12802: preiodically rolled over and deleted.
12803:
12804: =item *
12805:
12806: logperm() : append a permanent message to lonnet.perm.log, this log
12807: file never gets deleted by any automated portion of the system, only
12808: messages of critical importance should go in here.
12809:
12810:
12811: =back
12812:
12813: =head2 General File Helper Routines
12814:
12815: =over 4
12816:
12817: =item *
12818:
12819: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
12820: (a) files in /uploaded
12821: (i) If a local copy of the file exists -
12822: compares modification date of local copy with last-modified date for
12823: definitive version stored on home server for course. If local copy is
12824: stale, requests a new version from the home server and stores it.
12825: If the original has been removed from the home server, then local copy
12826: is unlinked.
12827: (ii) If local copy does not exist -
12828: requests the file from the home server and stores it.
12829:
12830: If $caller is 'uploadrep':
12831: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
12832: for request for files originally uploaded via DOCS.
12833: - returns 'ok' if fresh local copy now available, -1 otherwise.
12834:
12835: Otherwise:
12836: This indicates a call from the content generation phase of the request.
12837: - returns the entire contents of the file or -1.
12838:
12839: (b) files in /res
12840: - returns the entire contents of a file or -1;
12841: it properly subscribes to and replicates the file if neccessary.
12842:
12843:
12844: =item *
12845:
12846: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
12847: reference
12848:
12849: returns either a stat() list of data about the file or an empty list
12850: if the file doesn't exist or couldn't find out about it (connection
12851: problems or user unknown)
12852:
12853: =item *
12854:
12855: filelocation($dir,$file) : returns file system location of a file
12856: based on URI; meant to be "fairly clean" absolute reference, $dir is a
12857: directory that relative $file lookups are to looked in ($dir of /a/dir
12858: and a file of ../bob will become /a/bob)
12859:
12860: =item *
12861:
12862: hreflocation($dir,$file) : returns file system location or a URL; same as
12863: filelocation except for hrefs
12864:
12865: =item *
12866:
12867: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
12868:
12869: =back
12870:
12871: =head2 Usererfile file routines (/uploaded*)
12872:
12873: =over 4
12874:
12875: =item *
12876:
12877: userfileupload(): main rotine for putting a file in a user or course's
12878: filespace, arguments are,
12879:
12880: formname - required - this is the name of the element in $env where the
12881: filename, and the contents of the file to create/modifed exist
12882: the filename is in $env{'form.'.$formname.'.filename'} and the
12883: contents of the file is located in $env{'form.'.$formname}
12884: context - if coursedoc, store the file in the course of the active role
12885: of the current user;
12886: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
12887: if 'canceloverwrite': delete file in tmp/overwrites directory
12888: subdir - required - subdirectory to put the file in under ../userfiles/
12889: if undefined, it will be placed in "unknown"
12890:
12891: (This routine calls clean_filename() to remove any dangerous
12892: characters from the filename, and then calls finuserfileupload() to
12893: complete the transaction)
12894:
12895: returns either the url of the uploaded file (/uploaded/....) if successful
12896: and /adm/notfound.html if unsuccessful
12897:
12898: =item *
12899:
12900: clean_filename(): routine for cleaing a filename up for storage in
12901: userfile space, argument is:
12902:
12903: filename - proposed filename
12904:
12905: returns: the new clean filename
12906:
12907: =item *
12908:
12909: finishuserfileupload(): routine that creates and sends the file to
12910: userspace, probably shouldn't be called directly
12911:
12912: docuname: username or courseid of destination for the file
12913: docudom: domain of user/course of destination for the file
12914: formname: same as for userfileupload()
12915: fname: filename (including subdirectories) for the file
12916: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
12917: allfiles: reference to hash used to store objects found by parser
12918: codebase: reference to hash used for codebases of java objects found by parser
12919: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
12920: thumbheight: height (pixels) of thumbnail to be created for uploaded image
12921: resizewidth: width to be used to resize image using resizeImage from ImageMagick
12922: resizeheight: height to be used to resize image using resizeImage from ImageMagick
12923: context: if 'overwrite', will move the uploaded file from its temporary location to
12924: userfiles to facilitate overwriting a previously uploaded file with same name.
12925: mimetype: reference to scalar to accommodate mime type determined
12926: from File::MMagic if $parser = parse.
12927:
12928: returns either the url of the uploaded file (/uploaded/....) if successful
12929: and /adm/notfound.html if unsuccessful (or an error message if context
12930: was 'overwrite').
12931:
12932:
12933: =item *
12934:
12935: renameuserfile(): renames an existing userfile to a new name
12936:
12937: Args:
12938: docuname: username or courseid of destination for the file
12939: docudom: domain of user/course of destination for the file
12940: old: current file name (including any subdirs under userfiles)
12941: new: desired file name (including any subdirs under userfiles)
12942:
12943: =item *
12944:
12945: mkdiruserfile(): creates a directory is a userfiles dir
12946:
12947: Args:
12948: docuname: username or courseid of destination for the file
12949: docudom: domain of user/course of destination for the file
12950: dir: dir to create (including any subdirs under userfiles)
12951:
12952: =item *
12953:
12954: removeuserfile(): removes a file that exists in userfiles
12955:
12956: Args:
12957: docuname: username or courseid of destination for the file
12958: docudom: domain of user/course of destination for the file
12959: fname: filname to delete (including any subdirs under userfiles)
12960:
12961: =item *
12962:
12963: removeuploadedurl(): convience function for removeuserfile()
12964:
12965: Args:
12966: url: a full /uploaded/... url to delete
12967:
12968: =item *
12969:
12970: get_portfile_permissions():
12971: Args:
12972: domain: domain of user or course contain the portfolio files
12973: user: name of user or num of course contain the portfolio files
12974: Returns:
12975: hashref of a dump of the proper file_permissions.db
12976:
12977:
12978: =item *
12979:
12980: get_access_controls():
12981:
12982: Args:
12983: current_permissions: the hash ref returned from get_portfile_permissions()
12984: group: (optional) the group you want the files associated with
12985: file: (optional) the file you want access info on
12986:
12987: Returns:
12988: a hash (keys are file names) of hashes containing
12989: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
12990: values are XML containing access control settings (see below)
12991:
12992: Internal notes:
12993:
12994: access controls are stored in file_permissions.db as key=value pairs.
12995: key -> path to file/file_name\0uniqueID:scope_end_start
12996: where scope -> public,guest,course,group,domains or users.
12997: end -> UNIX time for end of access (0 -> no end date)
12998: start -> UNIX time for start of access
12999:
13000: value -> XML description of access control
13001: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13002: <start></start>
13003: <end></end>
13004:
13005: <password></password> for scope type = guest
13006:
13007: <domain></domain> for scope type = course or group
13008: <number></number>
13009: <roles id="">
13010: <role></role>
13011: <access></access>
13012: <section></section>
13013: <group></group>
13014: </roles>
13015:
13016: <dom></dom> for scope type = domains
13017:
13018: <users> for scope type = users
13019: <user>
13020: <uname></uname>
13021: <udom></udom>
13022: </user>
13023: </users>
13024: </scope>
13025:
13026: Access data is also aggregated for each file in an additional key=value pair:
13027: key -> path to file/file_name\0accesscontrol
13028: value -> reference to hash
13029: hash contains key = value pairs
13030: where key = uniqueID:scope_end_start
13031: value = UNIX time record was last updated
13032:
13033: Used to improve speed of look-ups of access controls for each file.
13034:
13035: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13036:
13037: modify_access_controls():
13038:
13039: Modifies access controls for a portfolio file
13040: Args
13041: 1. file name
13042: 2. reference to hash of required changes,
13043: 3. domain
13044: 4. username
13045: where domain,username are the domain of the portfolio owner
13046: (either a user or a course)
13047:
13048: Returns:
13049: 1. result of additions or updates ('ok' or 'error', with error message).
13050: 2. result of deletions ('ok' or 'error', with error message).
13051: 3. reference to hash of any new or updated access controls.
13052: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13053: key = integer (inbound ID)
13054: value = uniqueID
13055:
13056: =back
13057:
13058: =head2 HTTP Helper Routines
13059:
13060: =over 4
13061:
13062: =item *
13063:
13064: escape() : unpack non-word characters into CGI-compatible hex codes
13065:
13066: =item *
13067:
13068: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13069:
13070: =back
13071:
13072: =head1 PRIVATE SUBROUTINES
13073:
13074: =head2 Underlying communication routines (Shouldn't call)
13075:
13076: =over 4
13077:
13078: =item *
13079:
13080: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13081:
13082: =item *
13083:
13084: reply() : uses subreply to send a message to remote machine, logs all failures
13085:
13086: =item *
13087:
13088: critical() : passes a critical message to another server; if cannot
13089: get through then place message in connection buffer directory and
13090: returns con_delayed, if incapable of saving message, returns
13091: con_failed
13092:
13093: =item *
13094:
13095: reconlonc() : tries to reconnect lonc client processes.
13096:
13097: =back
13098:
13099: =head2 Resource Access Logging
13100:
13101: =over 4
13102:
13103: =item *
13104:
13105: flushcourselogs() : flush (save) buffer logs and access logs
13106:
13107: =item *
13108:
13109: courselog($what) : save message for course in hash
13110:
13111: =item *
13112:
13113: courseacclog($what) : save message for course using &courselog(). Perform
13114: special processing for specific resource types (problems, exams, quizzes, etc).
13115:
13116: =item *
13117:
13118: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13119: as a PerlChildExitHandler
13120:
13121: =back
13122:
13123: =head2 Other
13124:
13125: =over 4
13126:
13127: =item *
13128:
13129: symblist($mapname,%newhash) : update symbolic storage links
13130:
13131: =back
13132:
13133: =cut
13134:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonnet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / lonnet / perl