File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.1164:
download - view:
text,
annotated -
select for diffs
Sat Apr 14 00:52:16 2012 UTC (12 years, 3 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- &extract_embedded_items() can now detect dependencies in a Camtasia
index.html.
- early out for &repcopy_userfile() and &repcopy() when file is within
/home/httpd/lonUsers, i.e., file is a file uploaded to a course,
and current server is course's homesever, so replication is not needed.
- replaces regexp for non-existent /home/httpd/html/lonUsers (first
appeared in rev 1.538).
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1164 2012/04/14 00:52:16 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: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
80: %managerstab);
81:
82: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
83: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
84: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
85: %courseownerbuf, %coursetypebuf,$locknum);
86:
87: use IO::Socket;
88: use GDBM_File;
89: use HTML::LCParser;
90: use Fcntl qw(:flock);
91: use Storable qw(thaw nfreeze);
92: use Time::HiRes qw( gettimeofday tv_interval );
93: use Cache::Memcached;
94: use Digest::MD5;
95: use Math::Random;
96: use File::MMagic;
97: use LONCAPA qw(:DEFAULT :match);
98: use LONCAPA::Configuration;
99: use LONCAPA::lonmetadata;
100:
101: use File::Copy;
102:
103: my $readit;
104: my $max_connection_retries = 10; # Or some such value.
105:
106: require Exporter;
107:
108: our @ISA = qw (Exporter);
109: our @EXPORT = qw(%env);
110:
111:
112: # --------------------------------------------------------------------- Logging
113: {
114: my $logid;
115: sub instructor_log {
116: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
117: if (($cnum eq '') || ($cdom eq '')) {
118: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
119: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
120: }
121: $logid++;
122: my $now = time();
123: my $id=$now.'00000'.$$.'00000'.$logid;
124: return &Apache::lonnet::put('nohist_'.$hash_name,
125: { $id => {
126: 'exe_uname' => $env{'user.name'},
127: 'exe_udom' => $env{'user.domain'},
128: 'exe_time' => $now,
129: 'exe_ip' => $ENV{'REMOTE_ADDR'},
130: 'delflag' => $delflag,
131: 'logentry' => $storehash,
132: 'uname' => $uname,
133: 'udom' => $udom,
134: }
135: },$cdom,$cnum);
136: }
137: }
138:
139: sub logtouch {
140: my $execdir=$perlvar{'lonDaemons'};
141: unless (-e "$execdir/logs/lonnet.log") {
142: open(my $fh,">>$execdir/logs/lonnet.log");
143: close $fh;
144: }
145: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
146: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
147: }
148:
149: sub logthis {
150: my $message=shift;
151: my $execdir=$perlvar{'lonDaemons'};
152: my $now=time;
153: my $local=localtime($now);
154: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
155: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
156: print $fh $logstring;
157: close($fh);
158: }
159: return 1;
160: }
161:
162: sub logperm {
163: my $message=shift;
164: my $execdir=$perlvar{'lonDaemons'};
165: my $now=time;
166: my $local=localtime($now);
167: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
168: print $fh "$now:$message:$local\n";
169: close($fh);
170: }
171: return 1;
172: }
173:
174: sub create_connection {
175: my ($hostname,$lonid) = @_;
176: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
177: Type => SOCK_STREAM,
178: Timeout => 10);
179: return 0 if (!$client);
180: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
181: my $result = <$client>;
182: chomp($result);
183: return 1 if ($result eq 'done');
184: return 0;
185: }
186:
187: sub get_server_timezone {
188: my ($cnum,$cdom) = @_;
189: my $home=&homeserver($cnum,$cdom);
190: if ($home ne 'no_host') {
191: my $cachetime = 24*3600;
192: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
193: if (defined($cached)) {
194: return $timezone;
195: } else {
196: my $timezone = &reply('servertimezone',$home);
197: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
198: }
199: }
200: }
201:
202: sub get_server_distarch {
203: my ($lonhost,$ignore_cache) = @_;
204: if (defined($lonhost)) {
205: if (!defined(&hostname($lonhost))) {
206: return;
207: }
208: my $cachetime = 12*3600;
209: if (!$ignore_cache) {
210: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
211: if (defined($cached)) {
212: return $distarch;
213: }
214: }
215: my $rep = &reply('serverdistarch',$lonhost);
216: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
217: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
218: $rep eq '') {
219: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
220: }
221: }
222: return;
223: }
224:
225: sub get_server_loncaparev {
226: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
227: if (defined($lonhost)) {
228: if (!defined(&hostname($lonhost))) {
229: undef($lonhost);
230: }
231: }
232: if (!defined($lonhost)) {
233: if (defined(&domain($dom,'primary'))) {
234: $lonhost=&domain($dom,'primary');
235: if ($lonhost eq 'no_host') {
236: undef($lonhost);
237: }
238: }
239: }
240: if (defined($lonhost)) {
241: my $cachetime = 12*3600;
242: if (!$ignore_cache) {
243: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
244: if (defined($cached)) {
245: return $loncaparev;
246: }
247: }
248: my ($answer,$loncaparev);
249: my @ids=¤t_machine_ids();
250: if (grep(/^\Q$lonhost\E$/,@ids)) {
251: $answer = $perlvar{'lonVersion'};
252: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
253: $loncaparev = $1;
254: }
255: } else {
256: $answer = &reply('serverloncaparev',$lonhost);
257: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
258: if ($caller eq 'loncron') {
259: my $ua=new LWP::UserAgent;
260: $ua->timeout(4);
261: my $protocol = $protocol{$lonhost};
262: $protocol = 'http' if ($protocol ne 'https');
263: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
264: my $request=new HTTP::Request('GET',$url);
265: my $response=$ua->request($request);
266: unless ($response->is_error()) {
267: my $content = $response->content;
268: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
269: $loncaparev = $1;
270: }
271: }
272: } else {
273: $loncaparev = $loncaparevs{$lonhost};
274: }
275: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
276: $loncaparev = $1;
277: }
278: }
279: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
280: }
281: }
282:
283: sub get_server_homeID {
284: my ($hostname,$ignore_cache,$caller) = @_;
285: unless ($ignore_cache) {
286: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
287: if (defined($cached)) {
288: return $serverhomeID;
289: }
290: }
291: my $cachetime = 12*3600;
292: my $serverhomeID;
293: if ($caller eq 'loncron') {
294: my @machine_ids = &machine_ids($hostname);
295: foreach my $id (@machine_ids) {
296: my $response = &reply('serverhomeID',$id);
297: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
298: $serverhomeID = $response;
299: last;
300: }
301: }
302: if ($serverhomeID eq '') {
303: $serverhomeID = $machine_ids[-1];
304: }
305: } else {
306: $serverhomeID = $serverhomeIDs{$hostname};
307: }
308: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
309: }
310:
311: sub get_remote_globals {
312: my ($lonhost,$whathash,$ignore_cache) = @_;
313: my ($result,%returnhash,%whatneeded);
314: if (ref($whathash) eq 'HASH') {
315: foreach my $what (sort(keys(%{$whathash}))) {
316: my $hashid = $lonhost.'-'.$what;
317: my ($response,$cached);
318: unless ($ignore_cache) {
319: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
320: }
321: if (defined($cached)) {
322: $returnhash{$what} = $response;
323: } else {
324: $whatneeded{$what} = 1;
325: }
326: }
327: if (keys(%whatneeded) == 0) {
328: $result = 'ok';
329: } else {
330: my $requested = &freeze_escape(\%whatneeded);
331: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
332: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
333: ($rep eq 'unknown_cmd')) {
334: $result = $rep;
335: } else {
336: $result = 'ok';
337: my @pairs=split(/\&/,$rep);
338: foreach my $item (@pairs) {
339: my ($key,$value)=split(/=/,$item,2);
340: my $what = &unescape($key);
341: my $hashid = $lonhost.'-'.$what;
342: $returnhash{$what}=&thaw_unescape($value);
343: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
344: }
345: }
346: }
347: }
348: return ($result,\%returnhash);
349: }
350:
351: sub remote_devalidate_cache {
352: my ($lonhost,$name,$id) = @_;
353: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
354: return $response;
355: }
356:
357: # -------------------------------------------------- Non-critical communication
358: sub subreply {
359: my ($cmd,$server)=@_;
360: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
361: #
362: # With loncnew process trimming, there's a timing hole between lonc server
363: # process exit and the master server picking up the listen on the AF_UNIX
364: # socket. In that time interval, a lock file will exist:
365:
366: my $lockfile=$peerfile.".lock";
367: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
368: sleep(1);
369: }
370: # At this point, either a loncnew parent is listening or an old lonc
371: # or loncnew child is listening so we can connect or everything's dead.
372: #
373: # We'll give the connection a few tries before abandoning it. If
374: # connection is not possible, we'll con_lost back to the client.
375: #
376: my $client;
377: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
378: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
379: Type => SOCK_STREAM,
380: Timeout => 10);
381: if ($client) {
382: last; # Connected!
383: } else {
384: &create_connection(&hostname($server),$server);
385: }
386: sleep(1); # Try again later if failed connection.
387: }
388: my $answer;
389: if ($client) {
390: print $client "sethost:$server:$cmd\n";
391: $answer=<$client>;
392: if (!$answer) { $answer="con_lost"; }
393: chomp($answer);
394: } else {
395: $answer = 'con_lost'; # Failed connection.
396: }
397: return $answer;
398: }
399:
400: sub reply {
401: my ($cmd,$server)=@_;
402: unless (defined(&hostname($server))) { return 'no_such_host'; }
403: my $answer=subreply($cmd,$server);
404: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
405: &logthis("<font color=\"blue\">WARNING:".
406: " $cmd to $server returned $answer</font>");
407: }
408: return $answer;
409: }
410:
411: # ----------------------------------------------------------- Send USR1 to lonc
412:
413: sub reconlonc {
414: my ($lonid) = @_;
415: my $hostname = &hostname($lonid);
416: if ($lonid) {
417: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
418: if ($hostname && -e $peerfile) {
419: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
420: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
421: Type => SOCK_STREAM,
422: Timeout => 10);
423: if ($client) {
424: print $client ("reset_retries\n");
425: my $answer=<$client>;
426: #reset just this one.
427: }
428: }
429: return;
430: }
431:
432: &logthis("Trying to reconnect lonc");
433: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
434: if (open(my $fh,"<$loncfile")) {
435: my $loncpid=<$fh>;
436: chomp($loncpid);
437: if (kill 0 => $loncpid) {
438: &logthis("lonc at pid $loncpid responding, sending USR1");
439: kill USR1 => $loncpid;
440: sleep 1;
441: } else {
442: &logthis(
443: "<font color=\"blue\">WARNING:".
444: " lonc at pid $loncpid not responding, giving up</font>");
445: }
446: } else {
447: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
448: }
449: }
450:
451: # ------------------------------------------------------ Critical communication
452:
453: sub critical {
454: my ($cmd,$server)=@_;
455: unless (&hostname($server)) {
456: &logthis("<font color=\"blue\">WARNING:".
457: " Critical message to unknown server ($server)</font>");
458: return 'no_such_host';
459: }
460: my $answer=reply($cmd,$server);
461: if ($answer eq 'con_lost') {
462: &reconlonc("$perlvar{'lonSockDir'}/$server");
463: my $answer=reply($cmd,$server);
464: if ($answer eq 'con_lost') {
465: my $now=time;
466: my $middlename=$cmd;
467: $middlename=substr($middlename,0,16);
468: $middlename=~s/\W//g;
469: my $dfilename=
470: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
471: $dumpcount++;
472: {
473: my $dfh;
474: if (open($dfh,">$dfilename")) {
475: print $dfh "$cmd\n";
476: close($dfh);
477: }
478: }
479: sleep 2;
480: my $wcmd='';
481: {
482: my $dfh;
483: if (open($dfh,"<$dfilename")) {
484: $wcmd=<$dfh>;
485: close($dfh);
486: }
487: }
488: chomp($wcmd);
489: if ($wcmd eq $cmd) {
490: &logthis("<font color=\"blue\">WARNING: ".
491: "Connection buffer $dfilename: $cmd</font>");
492: &logperm("D:$server:$cmd");
493: return 'con_delayed';
494: } else {
495: &logthis("<font color=\"red\">CRITICAL:"
496: ." Critical connection failed: $server $cmd</font>");
497: &logperm("F:$server:$cmd");
498: return 'con_failed';
499: }
500: }
501: }
502: return $answer;
503: }
504:
505: # ------------------------------------------- check if return value is an error
506:
507: sub error {
508: my ($result) = @_;
509: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
510: if ($2 == 2) { return undef; }
511: return $1;
512: }
513: return undef;
514: }
515:
516: sub convert_and_load_session_env {
517: my ($lonidsdir,$handle)=@_;
518: my @profile;
519: {
520: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
521: if (!$opened) {
522: return 0;
523: }
524: flock($idf,LOCK_SH);
525: @profile=<$idf>;
526: close($idf);
527: }
528: my %temp_env;
529: foreach my $line (@profile) {
530: if ($line !~ m/=/) {
531: return 0;
532: }
533: chomp($line);
534: my ($envname,$envvalue)=split(/=/,$line,2);
535: $temp_env{&unescape($envname)} = &unescape($envvalue);
536: }
537: unlink("$lonidsdir/$handle.id");
538: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
539: 0640)) {
540: %disk_env = %temp_env;
541: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
542: untie(%disk_env);
543: }
544: return 1;
545: }
546:
547: # ------------------------------------------- Transfer profile into environment
548: my $env_loaded;
549: sub transfer_profile_to_env {
550: my ($lonidsdir,$handle,$force_transfer) = @_;
551: if (!$force_transfer && $env_loaded) { return; }
552:
553: if (!defined($lonidsdir)) {
554: $lonidsdir = $perlvar{'lonIDsDir'};
555: }
556: if (!defined($handle)) {
557: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
558: }
559:
560: my $convert;
561: {
562: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
563: if (!$opened) {
564: return;
565: }
566: flock($idf,LOCK_SH);
567: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
568: &GDBM_READER(),0640)) {
569: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
570: untie(%disk_env);
571: } else {
572: $convert = 1;
573: }
574: }
575: if ($convert) {
576: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
577: &logthis("Failed to load session, or convert session.");
578: }
579: }
580:
581: my %remove;
582: while ( my $envname = each(%env) ) {
583: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
584: if ($time < time-300) {
585: $remove{$key}++;
586: }
587: }
588: }
589:
590: $env{'user.environment'} = "$lonidsdir/$handle.id";
591: $env_loaded=1;
592: foreach my $expired_key (keys(%remove)) {
593: &delenv($expired_key);
594: }
595: }
596:
597: # ---------------------------------------------------- Check for valid session
598: sub check_for_valid_session {
599: my ($r,$name) = @_;
600: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
601: if ($name eq '') {
602: $name = 'lonID';
603: }
604: my $lonid=$cookies{$name};
605: return undef if (!$lonid);
606:
607: my $handle=&LONCAPA::clean_handle($lonid->value);
608: my $lonidsdir;
609: if ($name eq 'lonDAV') {
610: $lonidsdir=$r->dir_config('lonDAVsessDir');
611: } else {
612: $lonidsdir=$r->dir_config('lonIDsDir');
613: }
614: return undef if (!-e "$lonidsdir/$handle.id");
615:
616: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
617: return undef if (!$opened);
618:
619: flock($idf,LOCK_SH);
620: my %disk_env;
621: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
622: &GDBM_READER(),0640)) {
623: return undef;
624: }
625:
626: if (!defined($disk_env{'user.name'})
627: || !defined($disk_env{'user.domain'})) {
628: return undef;
629: }
630: return $handle;
631: }
632:
633: sub timed_flock {
634: my ($file,$lock_type) = @_;
635: my $failed=0;
636: eval {
637: local $SIG{__DIE__}='DEFAULT';
638: local $SIG{ALRM}=sub {
639: $failed=1;
640: die("failed lock");
641: };
642: alarm(13);
643: flock($file,$lock_type);
644: alarm(0);
645: };
646: if ($failed) {
647: return undef;
648: } else {
649: return 1;
650: }
651: }
652:
653: # ---------------------------------------------------------- Append Environment
654:
655: sub appenv {
656: my ($newenv,$roles) = @_;
657: if (ref($newenv) eq 'HASH') {
658: foreach my $key (keys(%{$newenv})) {
659: my $refused = 0;
660: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
661: $refused = 1;
662: if (ref($roles) eq 'ARRAY') {
663: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
664: if (grep(/^\Q$role\E$/,@{$roles})) {
665: $refused = 0;
666: }
667: }
668: }
669: if ($refused) {
670: &logthis("<font color=\"blue\">WARNING: ".
671: "Attempt to modify environment ".$key." to ".$newenv->{$key}
672: .'</font>');
673: delete($newenv->{$key});
674: } else {
675: $env{$key}=$newenv->{$key};
676: }
677: }
678: my $opened = open(my $env_file,'+<',$env{'user.environment'});
679: if ($opened
680: && &timed_flock($env_file,LOCK_EX)
681: &&
682: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
683: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
684: while (my ($key,$value) = each(%{$newenv})) {
685: $disk_env{$key} = $value;
686: }
687: untie(%disk_env);
688: }
689: }
690: return 'ok';
691: }
692: # ----------------------------------------------------- Delete from Environment
693:
694: sub delenv {
695: my ($delthis,$regexp,$roles) = @_;
696: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
697: my $refused = 1;
698: if (ref($roles) eq 'ARRAY') {
699: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
700: if (grep(/^\Q$role\E$/,@{$roles})) {
701: $refused = 0;
702: }
703: }
704: if ($refused) {
705: &logthis("<font color=\"blue\">WARNING: ".
706: "Attempt to delete from environment ".$delthis);
707: return 'error';
708: }
709: }
710: my $opened = open(my $env_file,'+<',$env{'user.environment'});
711: if ($opened
712: && &timed_flock($env_file,LOCK_EX)
713: &&
714: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
715: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
716: foreach my $key (keys(%disk_env)) {
717: if ($regexp) {
718: if ($key=~/^$delthis/) {
719: delete($env{$key});
720: delete($disk_env{$key});
721: }
722: } else {
723: if ($key=~/^\Q$delthis\E/) {
724: delete($env{$key});
725: delete($disk_env{$key});
726: }
727: }
728: }
729: untie(%disk_env);
730: }
731: return 'ok';
732: }
733:
734: sub get_env_multiple {
735: my ($name) = @_;
736: my @values;
737: if (defined($env{$name})) {
738: # exists is it an array
739: if (ref($env{$name})) {
740: @values=@{ $env{$name} };
741: } else {
742: $values[0]=$env{$name};
743: }
744: }
745: return(@values);
746: }
747:
748: # ------------------------------------------------------------------- Locking
749:
750: sub set_lock {
751: my ($text)=@_;
752: $locknum++;
753: my $id=$$.'-'.$locknum;
754: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
755: 'session.lock.'.$id => $text});
756: return $id;
757: }
758:
759: sub get_locks {
760: my $num=0;
761: my %texts=();
762: foreach my $lock (split(/\,/,$env{'session.locks'})) {
763: if ($lock=~/\w/) {
764: $num++;
765: $texts{$lock}=$env{'session.lock.'.$lock};
766: }
767: }
768: return ($num,%texts);
769: }
770:
771: sub remove_lock {
772: my ($id)=@_;
773: my $newlocks='';
774: foreach my $lock (split(/\,/,$env{'session.locks'})) {
775: if (($lock=~/\w/) && ($lock ne $id)) {
776: $newlocks.=','.$lock;
777: }
778: }
779: &appenv({'session.locks' => $newlocks});
780: &delenv('session.lock.'.$id);
781: }
782:
783: sub remove_all_locks {
784: my $activelocks=$env{'session.locks'};
785: foreach my $lock (split(/\,/,$env{'session.locks'})) {
786: if ($lock=~/\w/) {
787: &remove_lock($lock);
788: }
789: }
790: }
791:
792:
793: # ------------------------------------------ Find out current server userload
794: sub userload {
795: my $numusers=0;
796: {
797: opendir(LONIDS,$perlvar{'lonIDsDir'});
798: my $filename;
799: my $curtime=time;
800: while ($filename=readdir(LONIDS)) {
801: next if ($filename eq '.' || $filename eq '..');
802: next if ($filename =~ /publicuser_\d+\.id/);
803: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
804: if ($curtime-$mtime < 1800) { $numusers++; }
805: }
806: closedir(LONIDS);
807: }
808: my $userloadpercent=0;
809: my $maxuserload=$perlvar{'lonUserLoadLim'};
810: if ($maxuserload) {
811: $userloadpercent=100*$numusers/$maxuserload;
812: }
813: $userloadpercent=sprintf("%.2f",$userloadpercent);
814: return $userloadpercent;
815: }
816:
817: # ------------------------------ Find server with least workload from spare.tab
818:
819: sub spareserver {
820: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
821: my $spare_server;
822: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
823: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
824: : $userloadpercent;
825: my ($uint_dom,$remotesessions);
826: if (($udom ne '') && (&domain($udom) ne '')) {
827: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
828: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
829: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
830: $remotesessions = $udomdefaults{'remotesessions'};
831: }
832: my $spareshash = &this_host_spares($udom);
833: if (ref($spareshash) eq 'HASH') {
834: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
835: foreach my $try_server (@{ $spareshash->{'primary'} }) {
836: if ($uint_dom) {
837: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
838: $try_server));
839: }
840: ($spare_server, $lowest_load) =
841: &compare_server_load($try_server, $spare_server, $lowest_load);
842: }
843: }
844:
845: my $found_server = ($spare_server ne '' && $lowest_load < 100);
846:
847: if (!$found_server) {
848: if (ref($spareshash->{'default'}) eq 'ARRAY') {
849: foreach my $try_server (@{ $spareshash->{'default'} }) {
850: if ($uint_dom) {
851: next unless (&spare_can_host($udom,$uint_dom,
852: $remotesessions,$try_server));
853: }
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858: }
859: }
860:
861: if (!$want_server_name) {
862: my $protocol = 'http';
863: if ($protocol{$spare_server} eq 'https') {
864: $protocol = $protocol{$spare_server};
865: }
866: if (defined($spare_server)) {
867: my $hostname = &hostname($spare_server);
868: if (defined($hostname)) {
869: $spare_server = $protocol.'://'.$hostname;
870: }
871: }
872: }
873: return $spare_server;
874: }
875:
876: sub compare_server_load {
877: my ($try_server, $spare_server, $lowest_load) = @_;
878:
879: my $loadans = &reply('load', $try_server);
880: my $userloadans = &reply('userload',$try_server);
881:
882: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
883: return ($spare_server, $lowest_load); #didn't get a number from the server
884: }
885:
886: my $load;
887: if ($loadans =~ /\d/) {
888: if ($userloadans =~ /\d/) {
889: #both are numbers, pick the bigger one
890: $load = ($loadans > $userloadans) ? $loadans
891: : $userloadans;
892: } else {
893: $load = $loadans;
894: }
895: } else {
896: $load = $userloadans;
897: }
898:
899: if (($load =~ /\d/) && ($load < $lowest_load)) {
900: $spare_server = $try_server;
901: $lowest_load = $load;
902: }
903: return ($spare_server,$lowest_load);
904: }
905:
906: # --------------------------- ask offload servers if user already has a session
907: sub find_existing_session {
908: my ($udom,$uname) = @_;
909: my $spareshash = &this_host_spares($udom);
910: if (ref($spareshash) eq 'HASH') {
911: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
912: foreach my $try_server (@{ $spareshash->{'primary'} }) {
913: return $try_server if (&has_user_session($try_server, $udom, $uname));
914: }
915: }
916: if (ref($spareshash->{'default'}) eq 'ARRAY') {
917: foreach my $try_server (@{ $spareshash->{'default'} }) {
918: return $try_server if (&has_user_session($try_server, $udom, $uname));
919: }
920: }
921: }
922: return;
923: }
924:
925: # -------------------------------- ask if server already has a session for user
926: sub has_user_session {
927: my ($lonid,$udom,$uname) = @_;
928: my $result = &reply(join(':','userhassession',
929: map {&escape($_)} ($udom,$uname)),$lonid);
930: return 1 if ($result eq 'ok');
931:
932: return 0;
933: }
934:
935: # --------- determine least loaded server in a user's domain which allows login
936:
937: sub choose_server {
938: my ($udom,$checkloginvia) = @_;
939: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
940: my %servers = &get_servers($udom);
941: my $lowest_load = 30000;
942: my ($login_host,$hostname,$portal_path,$isredirect);
943: foreach my $lonhost (keys(%servers)) {
944: my $loginvia;
945: if ($checkloginvia) {
946: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
947: if ($loginvia) {
948: my ($server,$path) = split(/:/,$loginvia);
949: ($login_host, $lowest_load) =
950: &compare_server_load($server, $login_host, $lowest_load);
951: if ($login_host eq $server) {
952: $portal_path = $path;
953: $isredirect = 1;
954: }
955: } else {
956: ($login_host, $lowest_load) =
957: &compare_server_load($lonhost, $login_host, $lowest_load);
958: if ($login_host eq $lonhost) {
959: $portal_path = '';
960: $isredirect = '';
961: }
962: }
963: } else {
964: ($login_host, $lowest_load) =
965: &compare_server_load($lonhost, $login_host, $lowest_load);
966: }
967: }
968: if ($login_host ne '') {
969: $hostname = &hostname($login_host);
970: }
971: return ($login_host,$hostname,$portal_path,$isredirect);
972: }
973:
974: # --------------------------------------------- Try to change a user's password
975:
976: sub changepass {
977: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
978: $currentpass = &escape($currentpass);
979: $newpass = &escape($newpass);
980: my $lonhost = $perlvar{'lonHostID'};
981: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
982: $server);
983: if (! $answer) {
984: &logthis("No reply on password change request to $server ".
985: "by $uname in domain $udom.");
986: } elsif ($answer =~ "^ok") {
987: &logthis("$uname in $udom successfully changed their password ".
988: "on $server.");
989: } elsif ($answer =~ "^pwchange_failure") {
990: &logthis("$uname in $udom was unable to change their password ".
991: "on $server. The action was blocked by either lcpasswd ".
992: "or pwchange");
993: } elsif ($answer =~ "^non_authorized") {
994: &logthis("$uname in $udom did not get their password correct when ".
995: "attempting to change it on $server.");
996: } elsif ($answer =~ "^auth_mode_error") {
997: &logthis("$uname in $udom attempted to change their password despite ".
998: "not being locally or internally authenticated on $server.");
999: } elsif ($answer =~ "^unknown_user") {
1000: &logthis("$uname in $udom attempted to change their password ".
1001: "on $server but were unable to because $server is not ".
1002: "their home server.");
1003: } elsif ($answer =~ "^refused") {
1004: &logthis("$server refused to change $uname in $udom password because ".
1005: "it was sent an unencrypted request to change the password.");
1006: } elsif ($answer =~ "invalid_client") {
1007: &logthis("$server refused to change $uname in $udom password because ".
1008: "it was a reset by e-mail originating from an invalid server.");
1009: }
1010: return $answer;
1011: }
1012:
1013: # ----------------------- Try to determine user's current authentication scheme
1014:
1015: sub queryauthenticate {
1016: my ($uname,$udom)=@_;
1017: my $uhome=&homeserver($uname,$udom);
1018: if (!$uhome) {
1019: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1020: return 'no_host';
1021: }
1022: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1023: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1024: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1025: }
1026: return $answer;
1027: }
1028:
1029: # --------- Try to authenticate user from domain's lib servers (first this one)
1030:
1031: sub authenticate {
1032: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1033: $upass=&escape($upass);
1034: $uname= &LONCAPA::clean_username($uname);
1035: my $uhome=&homeserver($uname,$udom,1);
1036: my $newhome;
1037: if ((!$uhome) || ($uhome eq 'no_host')) {
1038: # Maybe the machine was offline and only re-appeared again recently?
1039: &reconlonc();
1040: # One more
1041: $uhome=&homeserver($uname,$udom,1);
1042: if (($uhome eq 'no_host') && $checkdefauth) {
1043: if (defined(&domain($udom,'primary'))) {
1044: $newhome=&domain($udom,'primary');
1045: }
1046: if ($newhome ne '') {
1047: $uhome = $newhome;
1048: }
1049: }
1050: if ((!$uhome) || ($uhome eq 'no_host')) {
1051: &logthis("User $uname at $udom is unknown in authenticate");
1052: return 'no_host';
1053: }
1054: }
1055: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1056: if ($answer eq 'authorized') {
1057: if ($newhome) {
1058: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1059: return 'no_account_on_host';
1060: } else {
1061: &logthis("User $uname at $udom authorized by $uhome");
1062: return $uhome;
1063: }
1064: }
1065: if ($answer eq 'non_authorized') {
1066: &logthis("User $uname at $udom rejected by $uhome");
1067: return 'no_host';
1068: }
1069: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1070: return 'no_host';
1071: }
1072:
1073: sub can_host_session {
1074: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1075: my $canhost = 1;
1076: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1077: if (ref($remotesessions) eq 'HASH') {
1078: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1079: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1080: $canhost = 0;
1081: } else {
1082: $canhost = 1;
1083: }
1084: }
1085: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1086: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1087: $canhost = 1;
1088: } else {
1089: $canhost = 0;
1090: }
1091: }
1092: if ($canhost) {
1093: if ($remotesessions->{'version'} ne '') {
1094: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1095: if ($reqmajor ne '' && $reqminor ne '') {
1096: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1097: my $major = $1;
1098: my $minor = $2;
1099: if (($major < $reqmajor ) ||
1100: (($major == $reqmajor) && ($minor < $reqminor))) {
1101: $canhost = 0;
1102: }
1103: } else {
1104: $canhost = 0;
1105: }
1106: }
1107: }
1108: }
1109: }
1110: if ($canhost) {
1111: if (ref($hostedsessions) eq 'HASH') {
1112: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1113: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1114: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1115: if (($uint_dom ne '') &&
1116: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1117: $canhost = 0;
1118: } else {
1119: $canhost = 1;
1120: }
1121: }
1122: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1123: if (($uint_dom ne '') &&
1124: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1125: $canhost = 1;
1126: } else {
1127: $canhost = 0;
1128: }
1129: }
1130: }
1131: }
1132: return $canhost;
1133: }
1134:
1135: sub spare_can_host {
1136: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1137: my $canhost=1;
1138: my @intdoms;
1139: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1140: if (ref($internet_names) eq 'ARRAY') {
1141: @intdoms = @{$internet_names};
1142: }
1143: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1144: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1145: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1146: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1147: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1148: $canhost = &can_host_session($udom,$try_server,$remoterev,
1149: $remotesessions,
1150: $defdomdefaults{'hostedsessions'});
1151: }
1152: return $canhost;
1153: }
1154:
1155: sub this_host_spares {
1156: my ($dom) = @_;
1157: my ($dom_in_use,$lonhost_in_use,$result);
1158: my @hosts = ¤t_machine_ids();
1159: foreach my $lonhost (@hosts) {
1160: if (&host_domain($lonhost) eq $dom) {
1161: $dom_in_use = $dom;
1162: $lonhost_in_use = $lonhost;
1163: last;
1164: }
1165: }
1166: if ($dom_in_use ne '') {
1167: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1168: }
1169: if (ref($result) ne 'HASH') {
1170: $lonhost_in_use = $perlvar{'lonHostID'};
1171: $dom_in_use = &host_domain($lonhost_in_use);
1172: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1173: if (ref($result) ne 'HASH') {
1174: $result = \%spareid;
1175: }
1176: }
1177: return $result;
1178: }
1179:
1180: sub spares_for_offload {
1181: my ($dom_in_use,$lonhost_in_use) = @_;
1182: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1183: if (defined($cached)) {
1184: return $result;
1185: } else {
1186: my $cachetime = 60*60*24;
1187: my %domconfig =
1188: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1189: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1190: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1191: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1192: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1193: }
1194: }
1195: }
1196: }
1197: return;
1198: }
1199:
1200: sub get_lonbalancer_config {
1201: my ($servers) = @_;
1202: my ($currbalancer,$currtargets);
1203: if (ref($servers) eq 'HASH') {
1204: foreach my $server (keys(%{$servers})) {
1205: my %what = (
1206: spareid => 1,
1207: perlvar => 1,
1208: );
1209: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1210: if ($result eq 'ok') {
1211: if (ref($returnhash) eq 'HASH') {
1212: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1213: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1214: $currbalancer = $server;
1215: $currtargets = {};
1216: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1217: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1218: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1219: }
1220: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1221: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1222: }
1223: }
1224: last;
1225: }
1226: }
1227: }
1228: }
1229: }
1230: }
1231: return ($currbalancer,$currtargets);
1232: }
1233:
1234: sub check_loadbalancing {
1235: my ($uname,$udom) = @_;
1236: my ($is_balancer,$dom_in_use,$homeintdom,$rule_in_effect,
1237: $offloadto,$otherserver);
1238: my $lonhost = $perlvar{'lonHostID'};
1239: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1240: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1241: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1242: my $serverhomedom = &host_domain($lonhost);
1243:
1244: my $cachetime = 60*60*24;
1245:
1246: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1247: $dom_in_use = $udom;
1248: $homeintdom = 1;
1249: } else {
1250: $dom_in_use = $serverhomedom;
1251: }
1252: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1253: unless (defined($cached)) {
1254: my %domconfig =
1255: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1256: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1257: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1258: }
1259: }
1260: if (ref($result) eq 'HASH') {
1261: my $currbalancer = $result->{'lonhost'};
1262: my $currtargets = $result->{'targets'};
1263: my $currrules = $result->{'rules'};
1264: if ($currbalancer ne '') {
1265: my @hosts = ¤t_machine_ids();
1266: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1267: $is_balancer = 1;
1268: }
1269: }
1270: if ($is_balancer) {
1271: if (ref($currrules) eq 'HASH') {
1272: if ($homeintdom) {
1273: if ($uname ne '') {
1274: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1275: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1276: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1277: $rule_in_effect = $currrules->{'_LC_author'};
1278: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1279: $rule_in_effect = $currrules->{'_LC_adv'}
1280: }
1281: }
1282: if ($rule_in_effect eq '') {
1283: my %userenv = &userenvironment($udom,$uname,'inststatus');
1284: if ($userenv{'inststatus'} ne '') {
1285: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1286: my ($othertitle,$usertypes,$types) =
1287: &Apache::loncommon::sorted_inst_types($udom);
1288: if (ref($types) eq 'ARRAY') {
1289: foreach my $type (@{$types}) {
1290: if (grep(/^\Q$type\E$/,@statuses)) {
1291: if (exists($currrules->{$type})) {
1292: $rule_in_effect = $currrules->{$type};
1293: }
1294: }
1295: }
1296: }
1297: } else {
1298: if (exists($currrules->{'default'})) {
1299: $rule_in_effect = $currrules->{'default'};
1300: }
1301: }
1302: }
1303: } else {
1304: if (exists($currrules->{'default'})) {
1305: $rule_in_effect = $currrules->{'default'};
1306: }
1307: }
1308: } else {
1309: if ($currrules->{'_LC_external'} ne '') {
1310: $rule_in_effect = $currrules->{'_LC_external'};
1311: }
1312: }
1313: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1314: $uname,$udom);
1315: }
1316: }
1317: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1318: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1319: unless (defined($cached)) {
1320: my %domconfig =
1321: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1322: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1323: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1324: }
1325: }
1326: if (ref($result) eq 'HASH') {
1327: my $currbalancer = $result->{'lonhost'};
1328: my $currtargets = $result->{'targets'};
1329: my $currrules = $result->{'rules'};
1330:
1331: if ($currbalancer eq $lonhost) {
1332: $is_balancer = 1;
1333: if (ref($currrules) eq 'HASH') {
1334: if ($currrules->{'_LC_internetdom'} ne '') {
1335: $rule_in_effect = $currrules->{'_LC_internetdom'};
1336: }
1337: }
1338: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1339: $uname,$udom);
1340: }
1341: } else {
1342: if ($perlvar{'lonBalancer'} eq 'yes') {
1343: $is_balancer = 1;
1344: $offloadto = &this_host_spares($dom_in_use);
1345: }
1346: }
1347: } else {
1348: if ($perlvar{'lonBalancer'} eq 'yes') {
1349: $is_balancer = 1;
1350: $offloadto = &this_host_spares($dom_in_use);
1351: }
1352: }
1353: my $lowest_load = 30000;
1354: if (ref($offloadto) eq 'HASH') {
1355: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1356: foreach my $try_server (@{$offloadto->{'primary'}}) {
1357: ($otherserver,$lowest_load) =
1358: &compare_server_load($try_server,$otherserver,$lowest_load);
1359: }
1360: }
1361: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1362:
1363: if (!$found_server) {
1364: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1365: foreach my $try_server (@{$offloadto->{'default'}}) {
1366: ($otherserver,$lowest_load) =
1367: &compare_server_load($try_server,$otherserver,$lowest_load);
1368: }
1369: }
1370: }
1371: } elsif (ref($offloadto) eq 'ARRAY') {
1372: if (@{$offloadto} == 1) {
1373: $otherserver = $offloadto->[0];
1374: } elsif (@{$offloadto} > 1) {
1375: foreach my $try_server (@{$offloadto}) {
1376: ($otherserver,$lowest_load) =
1377: &compare_server_load($try_server,$otherserver,$lowest_load);
1378: }
1379: }
1380: }
1381: return ($is_balancer,$otherserver);
1382: }
1383:
1384: sub get_loadbalancer_targets {
1385: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1386: my $offloadto;
1387: if ($rule_in_effect eq '') {
1388: $offloadto = $currtargets;
1389: } else {
1390: if ($rule_in_effect eq 'homeserver') {
1391: my $homeserver = &homeserver($uname,$udom);
1392: if ($homeserver ne 'no_host') {
1393: $offloadto = [$homeserver];
1394: }
1395: } elsif ($rule_in_effect eq 'externalbalancer') {
1396: my %domconfig =
1397: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1398: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1399: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1400: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1401: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1402: }
1403: }
1404: } else {
1405: my %servers = &dom_servers($udom);
1406: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1407: if (&hostname($remotebalancer) ne '') {
1408: $offloadto = [$remotebalancer];
1409: }
1410: }
1411: } elsif (&hostname($rule_in_effect) ne '') {
1412: $offloadto = [$rule_in_effect];
1413: }
1414: }
1415: return $offloadto;
1416: }
1417:
1418: sub internet_dom_servers {
1419: my ($dom) = @_;
1420: my (%uniqservers,%servers);
1421: my $primaryserver = &hostname(&domain($dom,'primary'));
1422: my @machinedoms = &machine_domains($primaryserver);
1423: foreach my $mdom (@machinedoms) {
1424: my %currservers = %servers;
1425: my %server = &get_servers($mdom);
1426: %servers = (%currservers,%server);
1427: }
1428: my %by_hostname;
1429: foreach my $id (keys(%servers)) {
1430: push(@{$by_hostname{$servers{$id}}},$id);
1431: }
1432: foreach my $hostname (sort(keys(%by_hostname))) {
1433: if (@{$by_hostname{$hostname}} > 1) {
1434: my $match = 0;
1435: foreach my $id (@{$by_hostname{$hostname}}) {
1436: if (&host_domain($id) eq $dom) {
1437: $uniqservers{$id} = $hostname;
1438: $match = 1;
1439: }
1440: }
1441: unless ($match) {
1442: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1443: }
1444: } else {
1445: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1446: }
1447: }
1448: return %uniqservers;
1449: }
1450:
1451: # ---------------------- Find the homebase for a user from domain's lib servers
1452:
1453: my %homecache;
1454: sub homeserver {
1455: my ($uname,$udom,$ignoreBadCache)=@_;
1456: my $index="$uname:$udom";
1457:
1458: if (exists($homecache{$index})) { return $homecache{$index}; }
1459:
1460: my %servers = &get_servers($udom,'library');
1461: foreach my $tryserver (keys(%servers)) {
1462: next if ($ignoreBadCache ne 'true' &&
1463: exists($badServerCache{$tryserver}));
1464:
1465: my $answer=reply("home:$udom:$uname",$tryserver);
1466: if ($answer eq 'found') {
1467: delete($badServerCache{$tryserver});
1468: return $homecache{$index}=$tryserver;
1469: } elsif ($answer eq 'no_host') {
1470: $badServerCache{$tryserver}=1;
1471: }
1472: }
1473: return 'no_host';
1474: }
1475:
1476: # ------------------------------------- Find the usernames behind a list of IDs
1477:
1478: sub idget {
1479: my ($udom,@ids)=@_;
1480: my %returnhash=();
1481:
1482: my %servers = &get_servers($udom,'library');
1483: foreach my $tryserver (keys(%servers)) {
1484: my $idlist=join('&',@ids);
1485: $idlist=~tr/A-Z/a-z/;
1486: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1487: my @answer=();
1488: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1489: @answer=split(/\&/,$reply);
1490: } ;
1491: my $i;
1492: for ($i=0;$i<=$#ids;$i++) {
1493: if ($answer[$i]) {
1494: $returnhash{$ids[$i]}=$answer[$i];
1495: }
1496: }
1497: }
1498: return %returnhash;
1499: }
1500:
1501: # ------------------------------------- Find the IDs behind a list of usernames
1502:
1503: sub idrget {
1504: my ($udom,@unames)=@_;
1505: my %returnhash=();
1506: foreach my $uname (@unames) {
1507: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1508: }
1509: return %returnhash;
1510: }
1511:
1512: # ------------------------------- Store away a list of names and associated IDs
1513:
1514: sub idput {
1515: my ($udom,%ids)=@_;
1516: my %servers=();
1517: foreach my $uname (keys(%ids)) {
1518: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1519: my $uhom=&homeserver($uname,$udom);
1520: if ($uhom ne 'no_host') {
1521: my $id=&escape($ids{$uname});
1522: $id=~tr/A-Z/a-z/;
1523: my $esc_unam=&escape($uname);
1524: if ($servers{$uhom}) {
1525: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1526: } else {
1527: $servers{$uhom}=$id.'='.$esc_unam;
1528: }
1529: }
1530: }
1531: foreach my $server (keys(%servers)) {
1532: &critical('idput:'.$udom.':'.$servers{$server},$server);
1533: }
1534: }
1535:
1536: # ------------------------------dump from db file owned by domainconfig user
1537: sub dump_dom {
1538: my ($namespace,$udom,$regexp,$range)=@_;
1539: if (!$udom) {
1540: $udom=$env{'user.domain'};
1541: }
1542: my %returnhash;
1543: if ($udom) {
1544: my $uname = &get_domainconfiguser($udom);
1545: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1546: }
1547: return %returnhash;
1548: }
1549:
1550: # ------------------------------------------ get items from domain db files
1551:
1552: sub get_dom {
1553: my ($namespace,$storearr,$udom,$uhome)=@_;
1554: my $items='';
1555: foreach my $item (@$storearr) {
1556: $items.=&escape($item).'&';
1557: }
1558: $items=~s/\&$//;
1559: if (!$udom) {
1560: $udom=$env{'user.domain'};
1561: if (defined(&domain($udom,'primary'))) {
1562: $uhome=&domain($udom,'primary');
1563: } else {
1564: undef($uhome);
1565: }
1566: } else {
1567: if (!$uhome) {
1568: if (defined(&domain($udom,'primary'))) {
1569: $uhome=&domain($udom,'primary');
1570: }
1571: }
1572: }
1573: if ($udom && $uhome && ($uhome ne 'no_host')) {
1574: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1575: my %returnhash;
1576: if ($rep eq '' || $rep =~ /^error: 2 /) {
1577: return %returnhash;
1578: }
1579: my @pairs=split(/\&/,$rep);
1580: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1581: return @pairs;
1582: }
1583: my $i=0;
1584: foreach my $item (@$storearr) {
1585: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1586: $i++;
1587: }
1588: return %returnhash;
1589: } else {
1590: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1591: }
1592: }
1593:
1594: # -------------------------------------------- put items in domain db files
1595:
1596: sub put_dom {
1597: my ($namespace,$storehash,$udom,$uhome)=@_;
1598: if (!$udom) {
1599: $udom=$env{'user.domain'};
1600: if (defined(&domain($udom,'primary'))) {
1601: $uhome=&domain($udom,'primary');
1602: } else {
1603: undef($uhome);
1604: }
1605: } else {
1606: if (!$uhome) {
1607: if (defined(&domain($udom,'primary'))) {
1608: $uhome=&domain($udom,'primary');
1609: }
1610: }
1611: }
1612: if ($udom && $uhome && ($uhome ne 'no_host')) {
1613: my $items='';
1614: foreach my $item (keys(%$storehash)) {
1615: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1616: }
1617: $items=~s/\&$//;
1618: return &reply("putdom:$udom:$namespace:$items",$uhome);
1619: } else {
1620: &logthis("put_dom failed - no homeserver and/or domain");
1621: }
1622: }
1623:
1624: # --------------------- newput for items in db file owned by domainconfig user
1625: sub newput_dom {
1626: my ($namespace,$storehash,$udom) = @_;
1627: my $result;
1628: if (!$udom) {
1629: $udom=$env{'user.domain'};
1630: }
1631: if ($udom) {
1632: my $uname = &get_domainconfiguser($udom);
1633: $result = &newput($namespace,$storehash,$udom,$uname);
1634: }
1635: return $result;
1636: }
1637:
1638: # --------------------- delete for items in db file owned by domainconfig user
1639: sub del_dom {
1640: my ($namespace,$storearr,$udom)=@_;
1641: if (ref($storearr) eq 'ARRAY') {
1642: if (!$udom) {
1643: $udom=$env{'user.domain'};
1644: }
1645: if ($udom) {
1646: my $uname = &get_domainconfiguser($udom);
1647: return &del($namespace,$storearr,$udom,$uname);
1648: }
1649: }
1650: }
1651:
1652: # ----------------------------------construct domainconfig user for a domain
1653: sub get_domainconfiguser {
1654: my ($udom) = @_;
1655: return $udom.'-domainconfig';
1656: }
1657:
1658: sub retrieve_inst_usertypes {
1659: my ($udom) = @_;
1660: my (%returnhash,@order);
1661: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1662: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1663: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1664: %returnhash = %{$domdefs{'inststatustypes'}};
1665: @order = @{$domdefs{'inststatusorder'}};
1666: } else {
1667: if (defined(&domain($udom,'primary'))) {
1668: my $uhome=&domain($udom,'primary');
1669: my $rep=&reply("inst_usertypes:$udom",$uhome);
1670: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1671: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1672: return (\%returnhash,\@order);
1673: }
1674: my ($hashitems,$orderitems) = split(/:/,$rep);
1675: my @pairs=split(/\&/,$hashitems);
1676: foreach my $item (@pairs) {
1677: my ($key,$value)=split(/=/,$item,2);
1678: $key = &unescape($key);
1679: next if ($key =~ /^error: 2 /);
1680: $returnhash{$key}=&thaw_unescape($value);
1681: }
1682: my @esc_order = split(/\&/,$orderitems);
1683: foreach my $item (@esc_order) {
1684: push(@order,&unescape($item));
1685: }
1686: } else {
1687: &logthis("get_dom failed - no primary domain server for $udom");
1688: }
1689: }
1690: return (\%returnhash,\@order);
1691: }
1692:
1693: sub is_domainimage {
1694: my ($url) = @_;
1695: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1696: if (&domain($1) ne '') {
1697: return '1';
1698: }
1699: }
1700: return;
1701: }
1702:
1703: sub inst_directory_query {
1704: my ($srch) = @_;
1705: my $udom = $srch->{'srchdomain'};
1706: my %results;
1707: my $homeserver = &domain($udom,'primary');
1708: my $outcome;
1709: if ($homeserver ne '') {
1710: my $queryid=&reply("querysend:instdirsearch:".
1711: &escape($srch->{'srchby'}).':'.
1712: &escape($srch->{'srchterm'}).':'.
1713: &escape($srch->{'srchtype'}),$homeserver);
1714: my $host=&hostname($homeserver);
1715: if ($queryid !~/^\Q$host\E\_/) {
1716: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1717: return;
1718: }
1719: my $response = &get_query_reply($queryid);
1720: my $maxtries = 5;
1721: my $tries = 1;
1722: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1723: $response = &get_query_reply($queryid);
1724: $tries ++;
1725: }
1726:
1727: if (!&error($response) && $response ne 'refused') {
1728: if ($response eq 'unavailable') {
1729: $outcome = $response;
1730: } else {
1731: $outcome = 'ok';
1732: my @matches = split(/\n/,$response);
1733: foreach my $match (@matches) {
1734: my ($key,$value) = split(/=/,$match);
1735: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1736: }
1737: }
1738: }
1739: }
1740: return ($outcome,%results);
1741: }
1742:
1743: sub usersearch {
1744: my ($srch) = @_;
1745: my $dom = $srch->{'srchdomain'};
1746: my %results;
1747: my %libserv = &all_library();
1748: my $query = 'usersearch';
1749: foreach my $tryserver (keys(%libserv)) {
1750: if (&host_domain($tryserver) eq $dom) {
1751: my $host=&hostname($tryserver);
1752: my $queryid=
1753: &reply("querysend:".&escape($query).':'.
1754: &escape($srch->{'srchby'}).':'.
1755: &escape($srch->{'srchtype'}).':'.
1756: &escape($srch->{'srchterm'}),$tryserver);
1757: if ($queryid !~/^\Q$host\E\_/) {
1758: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1759: next;
1760: }
1761: my $reply = &get_query_reply($queryid);
1762: my $maxtries = 1;
1763: my $tries = 1;
1764: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1765: $reply = &get_query_reply($queryid);
1766: $tries ++;
1767: }
1768: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1769: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1770: } else {
1771: my @matches;
1772: if ($reply =~ /\n/) {
1773: @matches = split(/\n/,$reply);
1774: } else {
1775: @matches = split(/\&/,$reply);
1776: }
1777: foreach my $match (@matches) {
1778: my ($uname,$udom,%userhash);
1779: foreach my $entry (split(/:/,$match)) {
1780: my ($key,$value) =
1781: map {&unescape($_);} split(/=/,$entry);
1782: $userhash{$key} = $value;
1783: if ($key eq 'username') {
1784: $uname = $value;
1785: } elsif ($key eq 'domain') {
1786: $udom = $value;
1787: }
1788: }
1789: $results{$uname.':'.$udom} = \%userhash;
1790: }
1791: }
1792: }
1793: }
1794: return %results;
1795: }
1796:
1797: sub get_instuser {
1798: my ($udom,$uname,$id) = @_;
1799: my $homeserver = &domain($udom,'primary');
1800: my ($outcome,%results);
1801: if ($homeserver ne '') {
1802: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1803: &escape($id).':'.&escape($udom),$homeserver);
1804: my $host=&hostname($homeserver);
1805: if ($queryid !~/^\Q$host\E\_/) {
1806: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1807: return;
1808: }
1809: my $response = &get_query_reply($queryid);
1810: my $maxtries = 5;
1811: my $tries = 1;
1812: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1813: $response = &get_query_reply($queryid);
1814: $tries ++;
1815: }
1816: if (!&error($response) && $response ne 'refused') {
1817: if ($response eq 'unavailable') {
1818: $outcome = $response;
1819: } else {
1820: $outcome = 'ok';
1821: my @matches = split(/\n/,$response);
1822: foreach my $match (@matches) {
1823: my ($key,$value) = split(/=/,$match);
1824: $results{&unescape($key)} = &thaw_unescape($value);
1825: }
1826: }
1827: }
1828: }
1829: my %userinfo;
1830: if (ref($results{$uname}) eq 'HASH') {
1831: %userinfo = %{$results{$uname}};
1832: }
1833: return ($outcome,%userinfo);
1834: }
1835:
1836: sub inst_rulecheck {
1837: my ($udom,$uname,$id,$item,$rules) = @_;
1838: my %returnhash;
1839: if ($udom ne '') {
1840: if (ref($rules) eq 'ARRAY') {
1841: @{$rules} = map {&escape($_);} (@{$rules});
1842: my $rulestr = join(':',@{$rules});
1843: my $homeserver=&domain($udom,'primary');
1844: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1845: my $response;
1846: if ($item eq 'username') {
1847: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1848: ':'.&escape($uname).':'.$rulestr,
1849: $homeserver));
1850: } elsif ($item eq 'id') {
1851: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1852: ':'.&escape($id).':'.$rulestr,
1853: $homeserver));
1854: } elsif ($item eq 'selfcreate') {
1855: $response=&unescape(&reply('instselfcreatecheck:'.
1856: &escape($udom).':'.&escape($uname).
1857: ':'.$rulestr,$homeserver));
1858: }
1859: if ($response ne 'refused') {
1860: my @pairs=split(/\&/,$response);
1861: foreach my $item (@pairs) {
1862: my ($key,$value)=split(/=/,$item,2);
1863: $key = &unescape($key);
1864: next if ($key =~ /^error: 2 /);
1865: $returnhash{$key}=&thaw_unescape($value);
1866: }
1867: }
1868: }
1869: }
1870: }
1871: return %returnhash;
1872: }
1873:
1874: sub inst_userrules {
1875: my ($udom,$check) = @_;
1876: my (%ruleshash,@ruleorder);
1877: if ($udom ne '') {
1878: my $homeserver=&domain($udom,'primary');
1879: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1880: my $response;
1881: if ($check eq 'id') {
1882: $response=&reply('instidrules:'.&escape($udom),
1883: $homeserver);
1884: } elsif ($check eq 'email') {
1885: $response=&reply('instemailrules:'.&escape($udom),
1886: $homeserver);
1887: } else {
1888: $response=&reply('instuserrules:'.&escape($udom),
1889: $homeserver);
1890: }
1891: if (($response ne 'refused') && ($response ne 'error') &&
1892: ($response ne 'unknown_cmd') &&
1893: ($response ne 'no_such_host')) {
1894: my ($hashitems,$orderitems) = split(/:/,$response);
1895: my @pairs=split(/\&/,$hashitems);
1896: foreach my $item (@pairs) {
1897: my ($key,$value)=split(/=/,$item,2);
1898: $key = &unescape($key);
1899: next if ($key =~ /^error: 2 /);
1900: $ruleshash{$key}=&thaw_unescape($value);
1901: }
1902: my @esc_order = split(/\&/,$orderitems);
1903: foreach my $item (@esc_order) {
1904: push(@ruleorder,&unescape($item));
1905: }
1906: }
1907: }
1908: }
1909: return (\%ruleshash,\@ruleorder);
1910: }
1911:
1912: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1913:
1914: sub get_domain_defaults {
1915: my ($domain) = @_;
1916: my $cachetime = 60*60*24;
1917: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1918: if (defined($cached)) {
1919: if (ref($result) eq 'HASH') {
1920: return %{$result};
1921: }
1922: }
1923: my %domdefaults;
1924: my %domconfig =
1925: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1926: 'requestcourses','inststatus',
1927: 'coursedefaults','usersessions'],$domain);
1928: if (ref($domconfig{'defaults'}) eq 'HASH') {
1929: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1930: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1931: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1932: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1933: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1934: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1935: } else {
1936: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1937: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1938: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1939: }
1940: if (ref($domconfig{'quotas'}) eq 'HASH') {
1941: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1942: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1943: } else {
1944: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1945: }
1946: my @usertools = ('aboutme','blog','portfolio');
1947: foreach my $item (@usertools) {
1948: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1949: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1950: }
1951: }
1952: }
1953: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1954: foreach my $item ('official','unofficial','community') {
1955: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1956: }
1957: }
1958: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1959: foreach my $item ('inststatustypes','inststatusorder') {
1960: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1961: }
1962: }
1963: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1964: foreach my $item ('canuse_pdfforms') {
1965: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1966: }
1967: }
1968: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1969: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1970: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1971: }
1972: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1973: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1974: }
1975: }
1976: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1977: $cachetime);
1978: return %domdefaults;
1979: }
1980:
1981: # --------------------------------------------------- Assign a key to a student
1982:
1983: sub assign_access_key {
1984: #
1985: # a valid key looks like uname:udom#comments
1986: # comments are being appended
1987: #
1988: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1989: $kdom=
1990: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1991: $knum=
1992: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1993: $cdom=
1994: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1995: $cnum=
1996: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1997: $udom=$env{'user.name'} unless (defined($udom));
1998: $uname=$env{'user.domain'} unless (defined($uname));
1999: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2000: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2001: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2002: # assigned to this person
2003: # - this should not happen,
2004: # unless something went wrong
2005: # the first time around
2006: # ready to assign
2007: $logentry=$1.'; '.$logentry;
2008: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2009: $kdom,$knum) eq 'ok') {
2010: # key now belongs to user
2011: my $envkey='key.'.$cdom.'_'.$cnum;
2012: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2013: &appenv({'environment.'.$envkey => $ckey});
2014: return 'ok';
2015: } else {
2016: return
2017: 'error: Count not permanently assign key, will need to be re-entered later.';
2018: }
2019: } else {
2020: return 'error: Could not assign key, try again later.';
2021: }
2022: } elsif (!$existing{$ckey}) {
2023: # the key does not exist
2024: return 'error: The key does not exist';
2025: } else {
2026: # the key is somebody else's
2027: return 'error: The key is already in use';
2028: }
2029: }
2030:
2031: # ------------------------------------------ put an additional comment on a key
2032:
2033: sub comment_access_key {
2034: #
2035: # a valid key looks like uname:udom#comments
2036: # comments are being appended
2037: #
2038: my ($ckey,$cdom,$cnum,$logentry)=@_;
2039: $cdom=
2040: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2041: $cnum=
2042: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2043: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2044: if ($existing{$ckey}) {
2045: $existing{$ckey}.='; '.$logentry;
2046: # ready to assign
2047: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2048: $cdom,$cnum) eq 'ok') {
2049: return 'ok';
2050: } else {
2051: return 'error: Count not store comment.';
2052: }
2053: } else {
2054: # the key does not exist
2055: return 'error: The key does not exist';
2056: }
2057: }
2058:
2059: # ------------------------------------------------------ Generate a set of keys
2060:
2061: sub generate_access_keys {
2062: my ($number,$cdom,$cnum,$logentry)=@_;
2063: $cdom=
2064: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2065: $cnum=
2066: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2067: unless (&allowed('mky',$cdom)) { return 0; }
2068: unless (($cdom) && ($cnum)) { return 0; }
2069: if ($number>10000) { return 0; }
2070: sleep(2); # make sure don't get same seed twice
2071: srand(time()^($$+($$<<15))); # from "Programming Perl"
2072: my $total=0;
2073: for (my $i=1;$i<=$number;$i++) {
2074: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2075: sprintf("%lx",int(100000*rand)).'-'.
2076: sprintf("%lx",int(100000*rand));
2077: $newkey=~s/1/g/g; # folks mix up 1 and l
2078: $newkey=~s/0/h/g; # and also 0 and O
2079: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2080: if ($existing{$newkey}) {
2081: $i--;
2082: } else {
2083: if (&put('accesskeys',
2084: { $newkey => '# generated '.localtime().
2085: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2086: '; '.$logentry },
2087: $cdom,$cnum) eq 'ok') {
2088: $total++;
2089: }
2090: }
2091: }
2092: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2093: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2094: return $total;
2095: }
2096:
2097: # ------------------------------------------------------- Validate an accesskey
2098:
2099: sub validate_access_key {
2100: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2101: $cdom=
2102: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2103: $cnum=
2104: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2105: $udom=$env{'user.domain'} unless (defined($udom));
2106: $uname=$env{'user.name'} unless (defined($uname));
2107: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2108: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2109: }
2110:
2111: # ------------------------------------- Find the section of student in a course
2112: sub devalidate_getsection_cache {
2113: my ($udom,$unam,$courseid)=@_;
2114: my $hashid="$udom:$unam:$courseid";
2115: &devalidate_cache_new('getsection',$hashid);
2116: }
2117:
2118: sub courseid_to_courseurl {
2119: my ($courseid) = @_;
2120: #already url style courseid
2121: return $courseid if ($courseid =~ m{^/});
2122:
2123: if (exists($env{'course.'.$courseid.'.num'})) {
2124: my $cnum = $env{'course.'.$courseid.'.num'};
2125: my $cdom = $env{'course.'.$courseid.'.domain'};
2126: return "/$cdom/$cnum";
2127: }
2128:
2129: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2130: if (exists($courseinfo{'num'})) {
2131: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2132: }
2133:
2134: return undef;
2135: }
2136:
2137: sub getsection {
2138: my ($udom,$unam,$courseid)=@_;
2139: my $cachetime=1800;
2140:
2141: my $hashid="$udom:$unam:$courseid";
2142: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2143: if (defined($cached)) { return $result; }
2144:
2145: my %Pending;
2146: my %Expired;
2147: #
2148: # Each role can either have not started yet (pending), be active,
2149: # or have expired.
2150: #
2151: # If there is an active role, we are done.
2152: #
2153: # If there is more than one role which has not started yet,
2154: # choose the one which will start sooner
2155: # If there is one role which has not started yet, return it.
2156: #
2157: # If there is more than one expired role, choose the one which ended last.
2158: # If there is a role which has expired, return it.
2159: #
2160: $courseid = &courseid_to_courseurl($courseid);
2161: my $extra = &freeze_escape({'skipcheck' => 1});
2162: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
2163: foreach my $key (keys(%roleshash)) {
2164: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2165: my $section=$1;
2166: if ($key eq $courseid.'_st') { $section=''; }
2167: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2168: my $now=time;
2169: if (defined($end) && $end && ($now > $end)) {
2170: $Expired{$end}=$section;
2171: next;
2172: }
2173: if (defined($start) && $start && ($now < $start)) {
2174: $Pending{$start}=$section;
2175: next;
2176: }
2177: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2178: }
2179: #
2180: # Presumedly there will be few matching roles from the above
2181: # loop and the sorting time will be negligible.
2182: if (scalar(keys(%Pending))) {
2183: my ($time) = sort {$a <=> $b} keys(%Pending);
2184: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2185: }
2186: if (scalar(keys(%Expired))) {
2187: my @sorted = sort {$a <=> $b} keys(%Expired);
2188: my $time = pop(@sorted);
2189: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2190: }
2191: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2192: }
2193:
2194: sub save_cache {
2195: &purge_remembered();
2196: #&Apache::loncommon::validate_page();
2197: undef(%env);
2198: undef($env_loaded);
2199: }
2200:
2201: my $to_remember=-1;
2202: my %remembered;
2203: my %accessed;
2204: my $kicks=0;
2205: my $hits=0;
2206: sub make_key {
2207: my ($name,$id) = @_;
2208: if (length($id) > 65
2209: && length(&escape($id)) > 200) {
2210: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2211: }
2212: return &escape($name.':'.$id);
2213: }
2214:
2215: sub devalidate_cache_new {
2216: my ($name,$id,$debug) = @_;
2217: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2218: $id=&make_key($name,$id);
2219: $memcache->delete($id);
2220: delete($remembered{$id});
2221: delete($accessed{$id});
2222: }
2223:
2224: sub is_cached_new {
2225: my ($name,$id,$debug) = @_;
2226: $id=&make_key($name,$id);
2227: if (exists($remembered{$id})) {
2228: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2229: $accessed{$id}=[&gettimeofday()];
2230: $hits++;
2231: return ($remembered{$id},1);
2232: }
2233: my $value = $memcache->get($id);
2234: if (!(defined($value))) {
2235: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2236: return (undef,undef);
2237: }
2238: if ($value eq '__undef__') {
2239: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2240: $value=undef;
2241: }
2242: &make_room($id,$value,$debug);
2243: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2244: return ($value,1);
2245: }
2246:
2247: sub do_cache_new {
2248: my ($name,$id,$value,$time,$debug) = @_;
2249: $id=&make_key($name,$id);
2250: my $setvalue=$value;
2251: if (!defined($setvalue)) {
2252: $setvalue='__undef__';
2253: }
2254: if (!defined($time) ) {
2255: $time=600;
2256: }
2257: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2258: my $result = $memcache->set($id,$setvalue,$time);
2259: if (! $result) {
2260: &logthis("caching of id -> $id failed");
2261: $memcache->disconnect_all();
2262: }
2263: # need to make a copy of $value
2264: &make_room($id,$value,$debug);
2265: return $value;
2266: }
2267:
2268: sub make_room {
2269: my ($id,$value,$debug)=@_;
2270:
2271: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2272: : $value;
2273: if ($to_remember<0) { return; }
2274: $accessed{$id}=[&gettimeofday()];
2275: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2276: my $to_kick;
2277: my $max_time=0;
2278: foreach my $other (keys(%accessed)) {
2279: if (&tv_interval($accessed{$other}) > $max_time) {
2280: $to_kick=$other;
2281: $max_time=&tv_interval($accessed{$other});
2282: }
2283: }
2284: delete($remembered{$to_kick});
2285: delete($accessed{$to_kick});
2286: $kicks++;
2287: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2288: return;
2289: }
2290:
2291: sub purge_remembered {
2292: #&logthis("Tossing ".scalar(keys(%remembered)));
2293: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2294: undef(%remembered);
2295: undef(%accessed);
2296: }
2297: # ------------------------------------- Read an entry from a user's environment
2298:
2299: sub userenvironment {
2300: my ($udom,$unam,@what)=@_;
2301: my $items;
2302: foreach my $item (@what) {
2303: $items.=&escape($item).'&';
2304: }
2305: $items=~s/\&$//;
2306: my %returnhash=();
2307: my $uhome = &homeserver($unam,$udom);
2308: unless ($uhome eq 'no_host') {
2309: my @answer=split(/\&/,
2310: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2311: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2312: return %returnhash;
2313: }
2314: my $i;
2315: for ($i=0;$i<=$#what;$i++) {
2316: $returnhash{$what[$i]}=&unescape($answer[$i]);
2317: }
2318: }
2319: return %returnhash;
2320: }
2321:
2322: # ---------------------------------------------------------- Get a studentphoto
2323: sub studentphoto {
2324: my ($udom,$unam,$ext) = @_;
2325: my $home=&Apache::lonnet::homeserver($unam,$udom);
2326: if (defined($env{'request.course.id'})) {
2327: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2328: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2329: return(&retrievestudentphoto($udom,$unam,$ext));
2330: } else {
2331: my ($result,$perm_reqd)=
2332: &Apache::lonnet::auto_photo_permission($unam,$udom);
2333: if ($result eq 'ok') {
2334: if (!($perm_reqd eq 'yes')) {
2335: return(&retrievestudentphoto($udom,$unam,$ext));
2336: }
2337: }
2338: }
2339: }
2340: } else {
2341: my ($result,$perm_reqd) =
2342: &Apache::lonnet::auto_photo_permission($unam,$udom);
2343: if ($result eq 'ok') {
2344: if (!($perm_reqd eq 'yes')) {
2345: return(&retrievestudentphoto($udom,$unam,$ext));
2346: }
2347: }
2348: }
2349: return '/adm/lonKaputt/lonlogo_broken.gif';
2350: }
2351:
2352: sub retrievestudentphoto {
2353: my ($udom,$unam,$ext,$type) = @_;
2354: my $home=&Apache::lonnet::homeserver($unam,$udom);
2355: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2356: if ($ret eq 'ok') {
2357: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2358: if ($type eq 'thumbnail') {
2359: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2360: }
2361: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2362: return $tokenurl;
2363: } else {
2364: if ($type eq 'thumbnail') {
2365: return '/adm/lonKaputt/genericstudent_tn.gif';
2366: } else {
2367: return '/adm/lonKaputt/lonlogo_broken.gif';
2368: }
2369: }
2370: }
2371:
2372: # -------------------------------------------------------------------- New chat
2373:
2374: sub chatsend {
2375: my ($newentry,$anon,$group)=@_;
2376: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2377: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2378: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2379: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2380: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2381: &escape($newentry)).':'.$group,$chome);
2382: }
2383:
2384: # ------------------------------------------ Find current version of a resource
2385:
2386: sub getversion {
2387: my $fname=&clutter(shift);
2388: unless ($fname=~/^\/res\//) { return -1; }
2389: return ¤tversion(&filelocation('',$fname));
2390: }
2391:
2392: sub currentversion {
2393: my $fname=shift;
2394: my $author=$fname;
2395: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2396: my ($udom,$uname)=split(/\//,$author);
2397: my $home=&homeserver($uname,$udom);
2398: if ($home eq 'no_host') {
2399: return -1;
2400: }
2401: my $answer=&reply("currentversion:$fname",$home);
2402: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2403: return -1;
2404: }
2405: return $answer;
2406: }
2407:
2408: #
2409: # Return special version number of resource if set by override, empty otherwise
2410: #
2411: sub usedversion {
2412: my $fname=shift;
2413: unless ($fname) { $fname=$env{'request.uri'}; }
2414: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2415: if ($urlversion) { return $urlversion; }
2416: return '';
2417: }
2418:
2419: # ----------------------------- Subscribe to a resource, return URL if possible
2420:
2421: sub subscribe {
2422: my $fname=shift;
2423: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2424: $fname=~s/[\n\r]//g;
2425: my $author=$fname;
2426: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2427: my ($udom,$uname)=split(/\//,$author);
2428: my $home=homeserver($uname,$udom);
2429: if ($home eq 'no_host') {
2430: return 'not_found';
2431: }
2432: my $answer=reply("sub:$fname",$home);
2433: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2434: $answer.=' by '.$home;
2435: }
2436: return $answer;
2437: }
2438:
2439: # -------------------------------------------------------------- Replicate file
2440:
2441: sub repcopy {
2442: my $filename=shift;
2443: $filename=~s/\/+/\//g;
2444: my $londocroot = $perlvar{'lonDocRoot'};
2445: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2446: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2447: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2448: $filename=~m{^/*(uploaded|editupload)/}) {
2449: return &repcopy_userfile($filename);
2450: }
2451: $filename=~s/[\n\r]//g;
2452: my $transname="$filename.in.transfer";
2453: # FIXME: this should flock
2454: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2455: my $remoteurl=subscribe($filename);
2456: if ($remoteurl =~ /^con_lost by/) {
2457: &logthis("Subscribe returned $remoteurl: $filename");
2458: return 'unavailable';
2459: } elsif ($remoteurl eq 'not_found') {
2460: #&logthis("Subscribe returned not_found: $filename");
2461: return 'not_found';
2462: } elsif ($remoteurl =~ /^rejected by/) {
2463: &logthis("Subscribe returned $remoteurl: $filename");
2464: return 'forbidden';
2465: } elsif ($remoteurl eq 'directory') {
2466: return 'ok';
2467: } else {
2468: my $author=$filename;
2469: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2470: my ($udom,$uname)=split(/\//,$author);
2471: my $home=homeserver($uname,$udom);
2472: unless ($home eq $perlvar{'lonHostID'}) {
2473: my @parts=split(/\//,$filename);
2474: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2475: if ($path ne "$londocroot/res") {
2476: &logthis("Malconfiguration for replication: $filename");
2477: return 'bad_request';
2478: }
2479: my $count;
2480: for ($count=5;$count<$#parts;$count++) {
2481: $path.="/$parts[$count]";
2482: if ((-e $path)!=1) {
2483: mkdir($path,0777);
2484: }
2485: }
2486: my $ua=new LWP::UserAgent;
2487: my $request=new HTTP::Request('GET',"$remoteurl");
2488: my $response=$ua->request($request,$transname);
2489: if ($response->is_error()) {
2490: unlink($transname);
2491: my $message=$response->status_line;
2492: &logthis("<font color=\"blue\">WARNING:"
2493: ." LWP get: $message: $filename</font>");
2494: return 'unavailable';
2495: } else {
2496: if ($remoteurl!~/\.meta$/) {
2497: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2498: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2499: if ($mresponse->is_error()) {
2500: unlink($filename.'.meta');
2501: &logthis(
2502: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2503: }
2504: }
2505: rename($transname,$filename);
2506: return 'ok';
2507: }
2508: }
2509: }
2510: }
2511:
2512: # ------------------------------------------------ Get server side include body
2513: sub ssi_body {
2514: my ($filelink,%form)=@_;
2515: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2516: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2517: }
2518: my $output='';
2519: my $response;
2520: if ($filelink=~/^https?\:/) {
2521: ($output,$response)=&externalssi($filelink);
2522: } else {
2523: $filelink .= $filelink=~/\?/ ? '&' : '?';
2524: $filelink .= 'inhibitmenu=yes';
2525: ($output,$response)=&ssi($filelink,%form);
2526: }
2527: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2528: $output=~s/^.*?\<body[^\>]*\>//si;
2529: $output=~s/\<\/body\s*\>.*?$//si;
2530: if (wantarray) {
2531: return ($output, $response);
2532: } else {
2533: return $output;
2534: }
2535: }
2536:
2537: # --------------------------------------------------------- Server Side Include
2538:
2539: sub absolute_url {
2540: my ($host_name) = @_;
2541: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2542: if ($host_name eq '') {
2543: $host_name = $ENV{'SERVER_NAME'};
2544: }
2545: return $protocol.$host_name;
2546: }
2547:
2548: #
2549: # Server side include.
2550: # Parameters:
2551: # fn Possibly encrypted resource name/id.
2552: # form Hash that describes how the rendering should be done
2553: # and other things.
2554: # Returns:
2555: # Scalar context: The content of the response.
2556: # Array context: 2 element list of the content and the full response object.
2557: #
2558: sub ssi {
2559:
2560: my ($fn,%form)=@_;
2561: my $ua=new LWP::UserAgent;
2562: my $request;
2563:
2564: $form{'no_update_last_known'}=1;
2565: &Apache::lonenc::check_encrypt(\$fn);
2566: if (%form) {
2567: $request=new HTTP::Request('POST',&absolute_url().$fn);
2568: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2569: } else {
2570: $request=new HTTP::Request('GET',&absolute_url().$fn);
2571: }
2572:
2573: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2574: my $response=$ua->request($request);
2575:
2576: if (wantarray) {
2577: return ($response->content, $response);
2578: } else {
2579: return $response->content;
2580: }
2581: }
2582:
2583: sub externalssi {
2584: my ($url)=@_;
2585: my $ua=new LWP::UserAgent;
2586: my $request=new HTTP::Request('GET',$url);
2587: my $response=$ua->request($request);
2588: if (wantarray) {
2589: return ($response->content, $response);
2590: } else {
2591: return $response->content;
2592: }
2593: }
2594:
2595: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2596:
2597: sub allowuploaded {
2598: my ($srcurl,$url)=@_;
2599: $url=&clutter(&declutter($url));
2600: my $dir=$url;
2601: $dir=~s/\/[^\/]+$//;
2602: my %httpref=();
2603: my $httpurl=&hreflocation('',$url);
2604: $httpref{'httpref.'.$httpurl}=$srcurl;
2605: &Apache::lonnet::appenv(\%httpref);
2606: }
2607:
2608: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2609: # input: action, courseID, current domain, intended
2610: # path to file, source of file, instruction to parse file for objects,
2611: # ref to hash for embedded objects,
2612: # ref to hash for codebase of java objects.
2613: # reference to scalar to accommodate mime type determined
2614: # from File::MMagic if $parser = parse.
2615: #
2616: # output: url to file (if action was uploaddoc),
2617: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2618: #
2619: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2620: # course.
2621: #
2622: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2623: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2624: # course's home server.
2625: #
2626: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2627: # be copied from $source (current location) to
2628: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2629: # and will then be copied to
2630: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2631: # course's home server.
2632: #
2633: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2634: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2635: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2636: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2637: # in course's home server.
2638: #
2639:
2640: sub process_coursefile {
2641: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2642: $mimetype)=@_;
2643: my $fetchresult;
2644: my $home=&homeserver($docuname,$docudom);
2645: if ($action eq 'propagate') {
2646: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2647: $home);
2648: } else {
2649: my $fpath = '';
2650: my $fname = $file;
2651: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2652: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2653: my $filepath = &build_filepath($fpath);
2654: if ($action eq 'copy') {
2655: if ($source eq '') {
2656: $fetchresult = 'no source file';
2657: return $fetchresult;
2658: } else {
2659: my $destination = $filepath.'/'.$fname;
2660: rename($source,$destination);
2661: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2662: $home);
2663: }
2664: } elsif ($action eq 'uploaddoc') {
2665: open(my $fh,'>'.$filepath.'/'.$fname);
2666: print $fh $env{'form.'.$source};
2667: close($fh);
2668: if ($parser eq 'parse') {
2669: my $mm = new File::MMagic;
2670: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2671: if ($type eq 'text/html') {
2672: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2673: unless ($parse_result eq 'ok') {
2674: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2675: }
2676: }
2677: if (ref($mimetype)) {
2678: $$mimetype = $type;
2679: }
2680: }
2681: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2682: $home);
2683: if ($fetchresult eq 'ok') {
2684: return '/uploaded/'.$fpath.'/'.$fname;
2685: } else {
2686: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2687: ' to host '.$home.': '.$fetchresult);
2688: return '/adm/notfound.html';
2689: }
2690: }
2691: }
2692: unless ( $fetchresult eq 'ok') {
2693: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2694: ' to host '.$home.': '.$fetchresult);
2695: }
2696: return $fetchresult;
2697: }
2698:
2699: sub build_filepath {
2700: my ($fpath) = @_;
2701: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2702: unless ($fpath eq '') {
2703: my @parts=split('/',$fpath);
2704: foreach my $part (@parts) {
2705: $filepath.= '/'.$part;
2706: if ((-e $filepath)!=1) {
2707: mkdir($filepath,0777);
2708: }
2709: }
2710: }
2711: return $filepath;
2712: }
2713:
2714: sub store_edited_file {
2715: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2716: my $file = $primary_url;
2717: $file =~ s#^/uploaded/$docudom/$docuname/##;
2718: my $fpath = '';
2719: my $fname = $file;
2720: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2721: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2722: my $filepath = &build_filepath($fpath);
2723: open(my $fh,'>'.$filepath.'/'.$fname);
2724: print $fh $content;
2725: close($fh);
2726: my $home=&homeserver($docuname,$docudom);
2727: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2728: $home);
2729: if ($$fetchresult eq 'ok') {
2730: return '/uploaded/'.$fpath.'/'.$fname;
2731: } else {
2732: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2733: ' to host '.$home.': '.$$fetchresult);
2734: return '/adm/notfound.html';
2735: }
2736: }
2737:
2738: sub clean_filename {
2739: my ($fname,$args)=@_;
2740: # Replace Windows backslashes by forward slashes
2741: $fname=~s/\\/\//g;
2742: if (!$args->{'keep_path'}) {
2743: # Get rid of everything but the actual filename
2744: $fname=~s/^.*\/([^\/]+)$/$1/;
2745: }
2746: # Replace spaces by underscores
2747: $fname=~s/\s+/\_/g;
2748: # Replace all other weird characters by nothing
2749: $fname=~s{[^/\w\.\-]}{}g;
2750: # Replace all .\d. sequences with _\d. so they no longer look like version
2751: # numbers
2752: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2753: return $fname;
2754: }
2755: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2756: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2757: # image with the same aspect ratio as the original, but with dimensions which do
2758: # not exceed $resizewidth and $resizeheight.
2759:
2760: sub resizeImage {
2761: my ($img_path,$resizewidth,$resizeheight) = @_;
2762: my $ima = Image::Magick->new;
2763: my $resized;
2764: if (-e $img_path) {
2765: $ima->Read($img_path);
2766: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2767: my $width = $ima->Get('width');
2768: my $height = $ima->Get('height');
2769: if ($width > $resizewidth) {
2770: my $factor = $width/$resizewidth;
2771: my $newheight = $height/$factor;
2772: $ima->Scale(width=>$resizewidth,height=>$newheight);
2773: $resized = 1;
2774: }
2775: }
2776: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2777: my $width = $ima->Get('width');
2778: my $height = $ima->Get('height');
2779: if ($height > $resizeheight) {
2780: my $factor = $height/$resizeheight;
2781: my $newwidth = $width/$factor;
2782: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2783: $resized = 1;
2784: }
2785: }
2786: if ($resized) {
2787: $ima->Write($img_path);
2788: }
2789: }
2790: return;
2791: }
2792:
2793: # --------------- Take an uploaded file and put it into the userfiles directory
2794: # input: $formname - the contents of the file are in $env{"form.$formname"}
2795: # the desired filename is in $env{"form.$formname.filename"}
2796: # $context - possible values: coursedoc, existingfile, overwrite,
2797: # canceloverwrite, or ''.
2798: # if 'coursedoc': upload to the current course
2799: # if 'existingfile': write file to tmp/overwrites directory
2800: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2801: # $context is passed as argument to &finishuserfileupload
2802: # $subdir - directory in userfile to store the file into
2803: # $parser - instruction to parse file for objects ($parser = parse)
2804: # $allfiles - reference to hash for embedded objects
2805: # $codebase - reference to hash for codebase of java objects
2806: # $desuname - username for permanent storage of uploaded file
2807: # $dsetudom - domain for permanaent storage of uploaded file
2808: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2809: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2810: # $resizewidth - width (pixels) to which to resize uploaded image
2811: # $resizeheight - height (pixels) to which to resize uploaded image
2812: # $mimetype - reference to scalar to accommodate mime type determined
2813: # from File::MMagic.
2814: #
2815: # output: url of file in userspace, or error: <message>
2816: # or /adm/notfound.html if failure to upload occurse
2817:
2818: sub userfileupload {
2819: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2820: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2821: if (!defined($subdir)) { $subdir='unknown'; }
2822: my $fname=$env{'form.'.$formname.'.filename'};
2823: $fname=&clean_filename($fname);
2824: # See if there is anything left
2825: unless ($fname) { return 'error: no uploaded file'; }
2826: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2827: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2828: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2829: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2830: my $now = time;
2831: my $filepath;
2832: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2833: $filepath = 'tmp/helprequests/'.$now;
2834: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2835: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2836: '_'.$env{'user.domain'}.'/pending';
2837: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2838: my ($docuname,$docudom);
2839: if ($destudom) {
2840: $docudom = $destudom;
2841: } else {
2842: $docudom = $env{'user.domain'};
2843: }
2844: if ($destuname) {
2845: $docuname = $destuname;
2846: } else {
2847: $docuname = $env{'user.name'};
2848: }
2849: if (exists($env{'form.group'})) {
2850: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2851: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2852: }
2853: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2854: if ($context eq 'canceloverwrite') {
2855: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2856: if (-e $tempfile) {
2857: my @info = stat($tempfile);
2858: if ($info[9] eq $env{'form.timestamp'}) {
2859: unlink($tempfile);
2860: }
2861: }
2862: return;
2863: }
2864: }
2865: # Create the directory if not present
2866: my @parts=split(/\//,$filepath);
2867: my $fullpath = $perlvar{'lonDaemons'};
2868: for (my $i=0;$i<@parts;$i++) {
2869: $fullpath .= '/'.$parts[$i];
2870: if ((-e $fullpath)!=1) {
2871: mkdir($fullpath,0777);
2872: }
2873: }
2874: open(my $fh,'>'.$fullpath.'/'.$fname);
2875: print $fh $env{'form.'.$formname};
2876: close($fh);
2877: if ($context eq 'existingfile') {
2878: my @info = stat($fullpath.'/'.$fname);
2879: return ($fullpath.'/'.$fname,$info[9]);
2880: } else {
2881: return $fullpath.'/'.$fname;
2882: }
2883: }
2884: if ($subdir eq 'scantron') {
2885: $fname = 'scantron_orig_'.$fname;
2886: } else {
2887: $fname="$subdir/$fname";
2888: }
2889: if ($context eq 'coursedoc') {
2890: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2891: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2892: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2893: return &finishuserfileupload($docuname,$docudom,
2894: $formname,$fname,$parser,$allfiles,
2895: $codebase,$thumbwidth,$thumbheight,
2896: $resizewidth,$resizeheight,$context,$mimetype);
2897: } else {
2898: $fname=$env{'form.folder'}.'/'.$fname;
2899: return &process_coursefile('uploaddoc',$docuname,$docudom,
2900: $fname,$formname,$parser,
2901: $allfiles,$codebase,$mimetype);
2902: }
2903: } elsif (defined($destuname)) {
2904: my $docuname=$destuname;
2905: my $docudom=$destudom;
2906: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2907: $parser,$allfiles,$codebase,
2908: $thumbwidth,$thumbheight,
2909: $resizewidth,$resizeheight,$context,$mimetype);
2910: } else {
2911: my $docuname=$env{'user.name'};
2912: my $docudom=$env{'user.domain'};
2913: if (exists($env{'form.group'})) {
2914: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2915: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2916: }
2917: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2918: $parser,$allfiles,$codebase,
2919: $thumbwidth,$thumbheight,
2920: $resizewidth,$resizeheight,$context,$mimetype);
2921: }
2922: }
2923:
2924: sub finishuserfileupload {
2925: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2926: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2927: my $path=$docudom.'/'.$docuname.'/';
2928: my $filepath=$perlvar{'lonDocRoot'};
2929:
2930: my ($fnamepath,$file,$fetchthumb);
2931: $file=$fname;
2932: if ($fname=~m|/|) {
2933: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2934: $path.=$fnamepath.'/';
2935: }
2936: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2937: my $count;
2938: for ($count=4;$count<=$#parts;$count++) {
2939: $filepath.="/$parts[$count]";
2940: if ((-e $filepath)!=1) {
2941: mkdir($filepath,0777);
2942: }
2943: }
2944:
2945: # Save the file
2946: {
2947: if (!open(FH,'>'.$filepath.'/'.$file)) {
2948: &logthis('Failed to create '.$filepath.'/'.$file);
2949: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2950: return '/adm/notfound.html';
2951: }
2952: if ($context eq 'overwrite') {
2953: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2954: my $target = $filepath.'/'.$file;
2955: if (-e $source) {
2956: my @info = stat($source);
2957: if ($info[9] eq $env{'form.timestamp'}) {
2958: unless (&File::Copy::move($source,$target)) {
2959: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2960: return "Moving from $source failed";
2961: }
2962: } else {
2963: return "Temporary file: $source had unexpected date/time for last modification";
2964: }
2965: } else {
2966: return "Temporary file: $source missing";
2967: }
2968: } elsif (!print FH ($env{'form.'.$formname})) {
2969: &logthis('Failed to write to '.$filepath.'/'.$file);
2970: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2971: return '/adm/notfound.html';
2972: }
2973: close(FH);
2974: if ($resizewidth && $resizeheight) {
2975: my $mm = new File::MMagic;
2976: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2977: if ($mime_type =~ m{^image/}) {
2978: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2979: }
2980: }
2981: }
2982: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
2983: if (ref($mimetype)) {
2984: if ($$mimetype eq '') {
2985: my $mm = new File::MMagic;
2986: my $type = $mm->checktype_filename($filepath.'/'.$file);
2987: $$mimetype = $type;
2988: }
2989: }
2990: }
2991: if ($parser eq 'parse') {
2992: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
2993: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2994: $allfiles,$codebase);
2995: unless ($parse_result eq 'ok') {
2996: &logthis('Failed to parse '.$filepath.$file.
2997: ' for embedded media: '.$parse_result);
2998: }
2999: }
3000: }
3001: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3002: my $input = $filepath.'/'.$file;
3003: my $output = $filepath.'/'.'tn-'.$file;
3004: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3005: system("convert -sample $thumbsize $input $output");
3006: if (-e $filepath.'/'.'tn-'.$file) {
3007: $fetchthumb = 1;
3008: }
3009: }
3010:
3011: # Notify homeserver to grep it
3012: #
3013: my $docuhome=&homeserver($docuname,$docudom);
3014: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3015: if ($fetchresult eq 'ok') {
3016: if ($fetchthumb) {
3017: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3018: if ($thumbresult ne 'ok') {
3019: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3020: $docuhome.': '.$thumbresult);
3021: }
3022: }
3023: #
3024: # Return the URL to it
3025: return '/uploaded/'.$path.$file;
3026: } else {
3027: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3028: ': '.$fetchresult);
3029: return '/adm/notfound.html';
3030: }
3031: }
3032:
3033: sub extract_embedded_items {
3034: my ($fullpath,$allfiles,$codebase,$content) = @_;
3035: my @state = ();
3036: my (%lastids,%related,%shockwave,%flashvars);
3037: my %javafiles = (
3038: codebase => '',
3039: code => '',
3040: archive => ''
3041: );
3042: my %mediafiles = (
3043: src => '',
3044: movie => '',
3045: );
3046: my $p;
3047: if ($content) {
3048: $p = HTML::LCParser->new($content);
3049: } else {
3050: $p = HTML::LCParser->new($fullpath);
3051: }
3052: while (my $t=$p->get_token()) {
3053: if ($t->[0] eq 'S') {
3054: my ($tagname, $attr) = ($t->[1],$t->[2]);
3055: push(@state, $tagname);
3056: if (lc($tagname) eq 'allow') {
3057: &add_filetype($allfiles,$attr->{'src'},'src');
3058: }
3059: if (lc($tagname) eq 'img') {
3060: &add_filetype($allfiles,$attr->{'src'},'src');
3061: }
3062: if (lc($tagname) eq 'a') {
3063: &add_filetype($allfiles,$attr->{'href'},'href');
3064: }
3065: if (lc($tagname) eq 'script') {
3066: my $src;
3067: if ($attr->{'archive'} =~ /\.jar$/i) {
3068: &add_filetype($allfiles,$attr->{'archive'},'archive');
3069: } else {
3070: if ($attr->{'src'} ne '') {
3071: $src = $attr->{'src'};
3072: &add_filetype($allfiles,$src,'src');
3073: }
3074: }
3075: my $text = $p->get_trimmed_text();
3076: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3077: my @swfargs = split(/,/,$1);
3078: foreach my $item (@swfargs) {
3079: $item =~ s/["']//g;
3080: $item =~ s/^\s+//;
3081: $item =~ s/\s+$//;
3082: }
3083: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3084: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3085: push(@{$related{$swfargs[0]}},$swfargs[2]);
3086: } else {
3087: $related{$swfargs[0]} = [$swfargs[2]];
3088: }
3089: }
3090: }
3091: }
3092: if (lc($tagname) eq 'link') {
3093: if (lc($attr->{'rel'}) eq 'stylesheet') {
3094: &add_filetype($allfiles,$attr->{'href'},'href');
3095: }
3096: }
3097: if (lc($tagname) eq 'object' ||
3098: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3099: foreach my $item (keys(%javafiles)) {
3100: $javafiles{$item} = '';
3101: }
3102: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3103: $lastids{lc($tagname)} = $attr->{'id'};
3104: }
3105: }
3106: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3107: my $name = lc($attr->{'name'});
3108: foreach my $item (keys(%javafiles)) {
3109: if ($name eq $item) {
3110: $javafiles{$item} = $attr->{'value'};
3111: last;
3112: }
3113: }
3114: my $pathfrom;
3115: foreach my $item (keys(%mediafiles)) {
3116: if ($name eq $item) {
3117: $pathfrom = $attr->{'value'};
3118: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3119: &add_filetype($allfiles,$pathfrom,$name);
3120: last;
3121: }
3122: }
3123: if ($name eq 'flashvars') {
3124: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3125: }
3126: if ($pathfrom ne '') {
3127: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3128: $pathfrom);
3129: }
3130: }
3131: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3132: foreach my $item (keys(%javafiles)) {
3133: if ($attr->{$item}) {
3134: $javafiles{$item} = $attr->{$item};
3135: last;
3136: }
3137: }
3138: foreach my $item (keys(%mediafiles)) {
3139: if ($attr->{$item}) {
3140: &add_filetype($allfiles,$attr->{$item},$item);
3141: last;
3142: }
3143: }
3144: if (lc($tagname) eq 'embed') {
3145: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3146: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3147: $attr->{'src'});
3148: }
3149: }
3150: }
3151: if ($t->[4] =~ m{/>$}) {
3152: pop(@state);
3153: }
3154: } elsif ($t->[0] eq 'E') {
3155: my ($tagname) = ($t->[1]);
3156: if ($javafiles{'codebase'} ne '') {
3157: $javafiles{'codebase'} .= '/';
3158: }
3159: if (lc($tagname) eq 'applet' ||
3160: lc($tagname) eq 'object' ||
3161: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3162: ) {
3163: foreach my $item (keys(%javafiles)) {
3164: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3165: my $file=$javafiles{'codebase'}.$javafiles{$item};
3166: &add_filetype($allfiles,$file,$item);
3167: }
3168: }
3169: }
3170: pop @state;
3171: }
3172: }
3173: foreach my $id (sort(keys(%flashvars))) {
3174: if ($shockwave{$id} ne '') {
3175: my @pairs = split(/\&/,$flashvars{$id});
3176: foreach my $pair (@pairs) {
3177: my ($key,$value) = split(/\=/,$pair);
3178: if ($key eq 'thumb') {
3179: &add_filetype($allfiles,$value,$key);
3180: } elsif ($key eq 'content') {
3181: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3182: my ($ext) = ($value =~ /\.([^.]+)$/);
3183: if ($ext ne '') {
3184: &add_filetype($allfiles,$path.$value,$ext);
3185: }
3186: }
3187: }
3188: }
3189: }
3190: return 'ok';
3191: }
3192:
3193: sub add_filetype {
3194: my ($allfiles,$file,$type)=@_;
3195: if (exists($allfiles->{$file})) {
3196: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3197: push(@{$allfiles->{$file}}, &escape($type));
3198: }
3199: } else {
3200: @{$allfiles->{$file}} = (&escape($type));
3201: }
3202: }
3203:
3204: sub embedded_dependency {
3205: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3206: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3207: if (($identifier ne '') &&
3208: (ref($related->{$identifier}) eq 'ARRAY') &&
3209: ($pathfrom ne '')) {
3210: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3211: foreach my $dep (@{$related->{$identifier}}) {
3212: &add_filetype($allfiles,$path.$dep,'object');
3213: }
3214: }
3215: }
3216: return;
3217: }
3218:
3219: sub removeuploadedurl {
3220: my ($url)=@_;
3221: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3222: return &removeuserfile($uname,$udom,$fname);
3223: }
3224:
3225: sub removeuserfile {
3226: my ($docuname,$docudom,$fname)=@_;
3227: my $home=&homeserver($docuname,$docudom);
3228: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3229: if ($result eq 'ok') {
3230: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3231: my $metafile = $fname.'.meta';
3232: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3233: my $url = "/uploaded/$docudom/$docuname/$fname";
3234: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3235: my $sqlresult =
3236: &update_portfolio_table($docuname,$docudom,$file,
3237: 'portfolio_metadata',$group,
3238: 'delete');
3239: }
3240: }
3241: return $result;
3242: }
3243:
3244: sub mkdiruserfile {
3245: my ($docuname,$docudom,$dir)=@_;
3246: my $home=&homeserver($docuname,$docudom);
3247: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3248: }
3249:
3250: sub renameuserfile {
3251: my ($docuname,$docudom,$old,$new)=@_;
3252: my $home=&homeserver($docuname,$docudom);
3253: my $result = &reply("renameuserfile:$docudom:$docuname:".
3254: &escape("$old").':'.&escape("$new"),$home);
3255: if ($result eq 'ok') {
3256: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3257: my $oldmeta = $old.'.meta';
3258: my $newmeta = $new.'.meta';
3259: my $metaresult =
3260: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3261: my $url = "/uploaded/$docudom/$docuname/$old";
3262: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3263: my $sqlresult =
3264: &update_portfolio_table($docuname,$docudom,$file,
3265: 'portfolio_metadata',$group,
3266: 'delete');
3267: }
3268: }
3269: return $result;
3270: }
3271:
3272: # ------------------------------------------------------------------------- Log
3273:
3274: sub log {
3275: my ($dom,$nam,$hom,$what)=@_;
3276: return critical("log:$dom:$nam:$what",$hom);
3277: }
3278:
3279: # ------------------------------------------------------------------ Course Log
3280: #
3281: # This routine flushes several buffers of non-mission-critical nature
3282: #
3283:
3284: sub flushcourselogs {
3285: &logthis('Flushing log buffers');
3286: #
3287: # course logs
3288: # This is a log of all transactions in a course, which can be used
3289: # for data mining purposes
3290: #
3291: # It also collects the courseid database, which lists last transaction
3292: # times and course titles for all courseids
3293: #
3294: my %courseidbuffer=();
3295: foreach my $crsid (keys(%courselogs)) {
3296: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3297: &escape($courselogs{$crsid}),
3298: $coursehombuf{$crsid}) eq 'ok') {
3299: delete $courselogs{$crsid};
3300: } else {
3301: &logthis('Failed to flush log buffer for '.$crsid);
3302: if (length($courselogs{$crsid})>40000) {
3303: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3304: " exceeded maximum size, deleting.</font>");
3305: delete $courselogs{$crsid};
3306: }
3307: }
3308: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3309: 'description' => $coursedescrbuf{$crsid},
3310: 'inst_code' => $courseinstcodebuf{$crsid},
3311: 'type' => $coursetypebuf{$crsid},
3312: 'owner' => $courseownerbuf{$crsid},
3313: };
3314: }
3315: #
3316: # Write course id database (reverse lookup) to homeserver of courses
3317: # Is used in pickcourse
3318: #
3319: foreach my $crs_home (keys(%courseidbuffer)) {
3320: my $response = &courseidput(&host_domain($crs_home),
3321: $courseidbuffer{$crs_home},
3322: $crs_home,'timeonly');
3323: }
3324: #
3325: # File accesses
3326: # Writes to the dynamic metadata of resources to get hit counts, etc.
3327: #
3328: foreach my $entry (keys(%accesshash)) {
3329: if ($entry =~ /___count$/) {
3330: my ($dom,$name);
3331: ($dom,$name,undef)=
3332: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3333: if (! defined($dom) || $dom eq '' ||
3334: ! defined($name) || $name eq '') {
3335: my $cid = $env{'request.course.id'};
3336: $dom = $env{'request.'.$cid.'.domain'};
3337: $name = $env{'request.'.$cid.'.num'};
3338: }
3339: my $value = $accesshash{$entry};
3340: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3341: my %temphash=($url => $value);
3342: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3343: if ($result eq 'ok') {
3344: delete $accesshash{$entry};
3345: }
3346: } else {
3347: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3348: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3349: my %temphash=($entry => $accesshash{$entry});
3350: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3351: delete $accesshash{$entry};
3352: }
3353: }
3354: }
3355: #
3356: # Roles
3357: # Reverse lookup of user roles for course faculty/staff and co-authorship
3358: #
3359: foreach my $entry (keys(%userrolehash)) {
3360: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3361: split(/\:/,$entry);
3362: if (&Apache::lonnet::put('nohist_userroles',
3363: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3364: $rudom,$runame) eq 'ok') {
3365: delete $userrolehash{$entry};
3366: }
3367: }
3368: #
3369: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3370: #
3371: my %domrolebuffer = ();
3372: foreach my $entry (keys(%domainrolehash)) {
3373: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3374: if ($domrolebuffer{$rudom}) {
3375: $domrolebuffer{$rudom}.='&'.&escape($entry).
3376: '='.&escape($domainrolehash{$entry});
3377: } else {
3378: $domrolebuffer{$rudom}.=&escape($entry).
3379: '='.&escape($domainrolehash{$entry});
3380: }
3381: delete $domainrolehash{$entry};
3382: }
3383: foreach my $dom (keys(%domrolebuffer)) {
3384: my %servers = &get_servers($dom,'library');
3385: foreach my $tryserver (keys(%servers)) {
3386: unless (&reply('domroleput:'.$dom.':'.
3387: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3388: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3389: }
3390: }
3391: }
3392: $dumpcount++;
3393: }
3394:
3395: sub courselog {
3396: my $what=shift;
3397: $what=time.':'.$what;
3398: unless ($env{'request.course.id'}) { return ''; }
3399: $coursedombuf{$env{'request.course.id'}}=
3400: $env{'course.'.$env{'request.course.id'}.'.domain'};
3401: $coursenumbuf{$env{'request.course.id'}}=
3402: $env{'course.'.$env{'request.course.id'}.'.num'};
3403: $coursehombuf{$env{'request.course.id'}}=
3404: $env{'course.'.$env{'request.course.id'}.'.home'};
3405: $coursedescrbuf{$env{'request.course.id'}}=
3406: $env{'course.'.$env{'request.course.id'}.'.description'};
3407: $courseinstcodebuf{$env{'request.course.id'}}=
3408: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3409: $courseownerbuf{$env{'request.course.id'}}=
3410: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3411: $coursetypebuf{$env{'request.course.id'}}=
3412: $env{'course.'.$env{'request.course.id'}.'.type'};
3413: if (defined $courselogs{$env{'request.course.id'}}) {
3414: $courselogs{$env{'request.course.id'}}.='&'.$what;
3415: } else {
3416: $courselogs{$env{'request.course.id'}}.=$what;
3417: }
3418: if (length($courselogs{$env{'request.course.id'}})>4048) {
3419: &flushcourselogs();
3420: }
3421: }
3422:
3423: sub courseacclog {
3424: my $fnsymb=shift;
3425: unless ($env{'request.course.id'}) { return ''; }
3426: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3427: if ($fnsymb=~/$LONCAPA::assess_re/) {
3428: $what.=':POST';
3429: # FIXME: Probably ought to escape things....
3430: foreach my $key (keys(%env)) {
3431: if ($key=~/^form\.(.*)/) {
3432: my $formitem = $1;
3433: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3434: $what.=':'.$formitem.'='.$env{$key};
3435: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3436: $what.=':'.$formitem.'='.$env{$key};
3437: }
3438: }
3439: }
3440: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3441: # FIXME: We should not be depending on a form parameter that someone
3442: # editing lonsearchcat.pm might change in the future.
3443: if ($env{'form.phase'} eq 'course_search') {
3444: $what.= ':POST';
3445: # FIXME: Probably ought to escape things....
3446: foreach my $element ('courseexp','crsfulltext','crsrelated',
3447: 'crsdiscuss') {
3448: $what.=':'.$element.'='.$env{'form.'.$element};
3449: }
3450: }
3451: }
3452: &courselog($what);
3453: }
3454:
3455: sub countacc {
3456: my $url=&declutter(shift);
3457: return if (! defined($url) || $url eq '');
3458: unless ($env{'request.course.id'}) { return ''; }
3459: #
3460: # Mark that this url was used in this course
3461: #
3462: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3463: #
3464: # Increase the access count for this resource in this child process
3465: #
3466: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3467: $accesshash{$key}++;
3468: }
3469:
3470: sub linklog {
3471: my ($from,$to)=@_;
3472: $from=&declutter($from);
3473: $to=&declutter($to);
3474: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3475: $accesshash{$to.'___'.$from.'___goto'}=1;
3476: }
3477:
3478: sub statslog {
3479: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3480: if ($users<2) { return; }
3481: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3482: 'course' => $env{'request.course.id'},
3483: 'sections' => '"all"',
3484: 'num_students' => $users,
3485: 'part' => $part,
3486: 'symb' => $symb,
3487: 'mean_tries' => $av_attempts,
3488: 'deg_of_diff' => $degdiff});
3489: foreach my $key (keys(%dynstore)) {
3490: $accesshash{$key}=$dynstore{$key};
3491: }
3492: }
3493:
3494: sub userrolelog {
3495: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3496: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
3497: ($trole=~/^in/) || ($trole=~/^cc/) ||
3498: ($trole=~/^ep/) || ($trole=~/^cr/) ||
3499: ($trole=~/^ta/) || ($trole=~/^co/)) {
3500: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3501: $userrolehash
3502: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3503: =$tend.':'.$tstart;
3504: }
3505: if (($env{'request.role'} =~ /dc\./) &&
3506: (($trole=~/^au/) || ($trole=~/^in/) ||
3507: ($trole=~/^cc/) || ($trole=~/^ep/) ||
3508: ($trole=~/^cr/) || ($trole=~/^ta/) ||
3509: ($trole=~/^co/))) {
3510: $userrolehash
3511: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3512: =$tend.':'.$tstart;
3513: }
3514: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
3515: ($trole=~/^li/) || ($trole=~/^li/) ||
3516: ($trole=~/^au/) || ($trole=~/^dg/) ||
3517: ($trole=~/^sc/)) {
3518: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3519: $domainrolehash
3520: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3521: = $tend.':'.$tstart;
3522: }
3523: }
3524:
3525: sub courserolelog {
3526: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3527: if (($trole eq 'cc') || ($trole eq 'in') ||
3528: ($trole eq 'ep') || ($trole eq 'ad') ||
3529: ($trole eq 'ta') || ($trole eq 'st') ||
3530: ($trole=~/^cr/) || ($trole eq 'gr') ||
3531: ($trole eq 'co')) {
3532: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3533: my $cdom = $1;
3534: my $cnum = $2;
3535: my $sec = $3;
3536: my $namespace = 'rolelog';
3537: my %storehash = (
3538: role => $trole,
3539: start => $tstart,
3540: end => $tend,
3541: selfenroll => $selfenroll,
3542: context => $context,
3543: );
3544: if ($trole eq 'gr') {
3545: $namespace = 'groupslog';
3546: $storehash{'group'} = $sec;
3547: } else {
3548: $storehash{'section'} = $sec;
3549: }
3550: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3551: if (($trole ne 'st') || ($sec ne '')) {
3552: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3553: }
3554: }
3555: }
3556: return;
3557: }
3558:
3559: sub get_course_adv_roles {
3560: my ($cid,$codes) = @_;
3561: $cid=$env{'request.course.id'} unless (defined($cid));
3562: my %coursehash=&coursedescription($cid);
3563: my $crstype = &Apache::loncommon::course_type($cid);
3564: my %nothide=();
3565: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3566: if ($user !~ /:/) {
3567: $nothide{join(':',split(/[\@]/,$user))}=1;
3568: } else {
3569: $nothide{$user}=1;
3570: }
3571: }
3572: my %returnhash=();
3573: my %dumphash=
3574: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3575: my $now=time;
3576: my %privileged;
3577: foreach my $entry (keys(%dumphash)) {
3578: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3579: if (($tstart) && ($tstart<0)) { next; }
3580: if (($tend) && ($tend<$now)) { next; }
3581: if (($tstart) && ($now<$tstart)) { next; }
3582: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3583: if ($username eq '' || $domain eq '') { next; }
3584: unless (ref($privileged{$domain}) eq 'HASH') {
3585: my %dompersonnel =
3586: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3587: $privileged{$domain} = {};
3588: foreach my $server (keys(%dompersonnel)) {
3589: if (ref($dompersonnel{$server}) eq 'HASH') {
3590: foreach my $user (keys(%{$dompersonnel{$server}})) {
3591: my ($trole,$uname,$udom) = split(/:/,$user);
3592: $privileged{$udom}{$uname} = 1;
3593: }
3594: }
3595: }
3596: }
3597: if ((exists($privileged{$domain}{$username})) &&
3598: (!$nothide{$username.':'.$domain})) { next; }
3599: if ($role eq 'cr') { next; }
3600: if ($codes) {
3601: if ($section) { $role .= ':'.$section; }
3602: if ($returnhash{$role}) {
3603: $returnhash{$role}.=','.$username.':'.$domain;
3604: } else {
3605: $returnhash{$role}=$username.':'.$domain;
3606: }
3607: } else {
3608: my $key=&plaintext($role,$crstype);
3609: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3610: if ($returnhash{$key}) {
3611: $returnhash{$key}.=','.$username.':'.$domain;
3612: } else {
3613: $returnhash{$key}=$username.':'.$domain;
3614: }
3615: }
3616: }
3617: return %returnhash;
3618: }
3619:
3620: sub get_my_roles {
3621: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3622: unless (defined($uname)) { $uname=$env{'user.name'}; }
3623: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3624: my (%dumphash,%nothide);
3625: if ($context eq 'userroles') {
3626: my $extra = &freeze_escape({'skipcheck' => 1});
3627: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3628: } else {
3629: %dumphash=
3630: &dump('nohist_userroles',$udom,$uname);
3631: if ($hidepriv) {
3632: my %coursehash=&coursedescription($udom.'_'.$uname);
3633: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3634: if ($user !~ /:/) {
3635: $nothide{join(':',split(/[\@]/,$user))} = 1;
3636: } else {
3637: $nothide{$user} = 1;
3638: }
3639: }
3640: }
3641: }
3642: my %returnhash=();
3643: my $now=time;
3644: my %privileged;
3645: foreach my $entry (keys(%dumphash)) {
3646: my ($role,$tend,$tstart);
3647: if ($context eq 'userroles') {
3648: next if ($entry =~ /^rolesdef/);
3649: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3650: } else {
3651: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3652: }
3653: if (($tstart) && ($tstart<0)) { next; }
3654: my $status = 'active';
3655: if (($tend) && ($tend<=$now)) {
3656: $status = 'previous';
3657: }
3658: if (($tstart) && ($now<$tstart)) {
3659: $status = 'future';
3660: }
3661: if (ref($types) eq 'ARRAY') {
3662: if (!grep(/^\Q$status\E$/,@{$types})) {
3663: next;
3664: }
3665: } else {
3666: if ($status ne 'active') {
3667: next;
3668: }
3669: }
3670: my ($rolecode,$username,$domain,$section,$area);
3671: if ($context eq 'userroles') {
3672: ($area,$rolecode) = split(/_/,$entry);
3673: (undef,$domain,$username,$section) = split(/\//,$area);
3674: } else {
3675: ($role,$username,$domain,$section) = split(/\:/,$entry);
3676: }
3677: if (ref($roledoms) eq 'ARRAY') {
3678: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3679: next;
3680: }
3681: }
3682: if (ref($roles) eq 'ARRAY') {
3683: if (!grep(/^\Q$role\E$/,@{$roles})) {
3684: if ($role =~ /^cr\//) {
3685: if (!grep(/^cr$/,@{$roles})) {
3686: next;
3687: }
3688: } elsif ($role =~ /^gr\//) {
3689: if (!grep(/^gr$/,@{$roles})) {
3690: next;
3691: }
3692: } else {
3693: next;
3694: }
3695: }
3696: }
3697: if ($hidepriv) {
3698: if ($context eq 'userroles') {
3699: if ((&privileged($username,$domain)) &&
3700: (!$nothide{$username.':'.$domain})) {
3701: next;
3702: }
3703: } else {
3704: unless (ref($privileged{$domain}) eq 'HASH') {
3705: my %dompersonnel =
3706: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3707: $privileged{$domain} = {};
3708: if (keys(%dompersonnel)) {
3709: foreach my $server (keys(%dompersonnel)) {
3710: if (ref($dompersonnel{$server}) eq 'HASH') {
3711: foreach my $user (keys(%{$dompersonnel{$server}})) {
3712: my ($trole,$uname,$udom) = split(/:/,$user);
3713: $privileged{$udom}{$uname} = $trole;
3714: }
3715: }
3716: }
3717: }
3718: }
3719: if (exists($privileged{$domain}{$username})) {
3720: if (!$nothide{$username.':'.$domain}) {
3721: next;
3722: }
3723: }
3724: }
3725: }
3726: if ($withsec) {
3727: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3728: $tstart.':'.$tend;
3729: } else {
3730: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3731: }
3732: }
3733: return %returnhash;
3734: }
3735:
3736: # ----------------------------------------------------- Frontpage Announcements
3737: #
3738: #
3739:
3740: sub postannounce {
3741: my ($server,$text)=@_;
3742: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3743: unless ($text=~/\w/) { $text=''; }
3744: return &reply('setannounce:'.&escape($text),$server);
3745: }
3746:
3747: sub getannounce {
3748:
3749: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3750: my $announcement='';
3751: while (my $line = <$fh>) { $announcement .= $line; }
3752: close($fh);
3753: if ($announcement=~/\w/) {
3754: return
3755: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3756: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3757: } else {
3758: return '';
3759: }
3760: } else {
3761: return '';
3762: }
3763: }
3764:
3765: # ---------------------------------------------------------- Course ID routines
3766: # Deal with domain's nohist_courseid.db files
3767: #
3768:
3769: sub courseidput {
3770: my ($domain,$storehash,$coursehome,$caller) = @_;
3771: return unless (ref($storehash) eq 'HASH');
3772: my $outcome;
3773: if ($caller eq 'timeonly') {
3774: my $cids = '';
3775: foreach my $item (keys(%$storehash)) {
3776: $cids.=&escape($item).'&';
3777: }
3778: $cids=~s/\&$//;
3779: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3780: $coursehome);
3781: } else {
3782: my $items = '';
3783: foreach my $item (keys(%$storehash)) {
3784: $items.= &escape($item).'='.
3785: &freeze_escape($$storehash{$item}).'&';
3786: }
3787: $items=~s/\&$//;
3788: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3789: $coursehome);
3790: }
3791: if ($outcome eq 'unknown_cmd') {
3792: my $what;
3793: foreach my $cid (keys(%$storehash)) {
3794: $what .= &escape($cid).'=';
3795: foreach my $item ('description','inst_code','owner','type') {
3796: $what .= &escape($storehash->{$cid}{$item}).':';
3797: }
3798: $what =~ s/\:$/&/;
3799: }
3800: $what =~ s/\&$//;
3801: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3802: } else {
3803: return $outcome;
3804: }
3805: }
3806:
3807: sub courseiddump {
3808: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3809: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3810: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3811: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3812: my $as_hash = 1;
3813: my %returnhash;
3814: if (!$domfilter) { $domfilter=''; }
3815: my %libserv = &all_library();
3816: foreach my $tryserver (keys(%libserv)) {
3817: if ( ( $hostidflag == 1
3818: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3819: || (!defined($hostidflag)) ) {
3820:
3821: if (($domfilter eq '') ||
3822: (&host_domain($tryserver) eq $domfilter)) {
3823: my $rep =
3824: &reply('courseiddump:'.&host_domain($tryserver).':'.
3825: $sincefilter.':'.&escape($descfilter).':'.
3826: &escape($instcodefilter).':'.&escape($ownerfilter).
3827: ':'.&escape($coursefilter).':'.&escape($typefilter).
3828: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3829: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3830: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3831: &escape($cc_clone).':'.$cloneonly.':'.
3832: &escape($createdbefore).':'.&escape($createdafter).':'.
3833: &escape($creationcontext).':'.$domcloner,
3834: $tryserver);
3835: my @pairs=split(/\&/,$rep);
3836: foreach my $item (@pairs) {
3837: my ($key,$value)=split(/\=/,$item,2);
3838: $key = &unescape($key);
3839: next if ($key =~ /^error: 2 /);
3840: my $result = &thaw_unescape($value);
3841: if (ref($result) eq 'HASH') {
3842: $returnhash{$key}=$result;
3843: } else {
3844: my @responses = split(/:/,$value);
3845: my @items = ('description','inst_code','owner','type');
3846: for (my $i=0; $i<@responses; $i++) {
3847: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3848: }
3849: }
3850: }
3851: }
3852: }
3853: }
3854: return %returnhash;
3855: }
3856:
3857: sub courselastaccess {
3858: my ($cdom,$cnum,$hostidref) = @_;
3859: my %returnhash;
3860: if ($cdom && $cnum) {
3861: my $chome = &homeserver($cnum,$cdom);
3862: if ($chome ne 'no_host') {
3863: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3864: &extract_lastaccess(\%returnhash,$rep);
3865: }
3866: } else {
3867: if (!$cdom) { $cdom=''; }
3868: my %libserv = &all_library();
3869: foreach my $tryserver (keys(%libserv)) {
3870: if (ref($hostidref) eq 'ARRAY') {
3871: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3872: }
3873: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3874: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3875: &extract_lastaccess(\%returnhash,$rep);
3876: }
3877: }
3878: }
3879: return %returnhash;
3880: }
3881:
3882: sub extract_lastaccess {
3883: my ($returnhash,$rep) = @_;
3884: if (ref($returnhash) eq 'HASH') {
3885: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3886: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3887: $rep eq '') {
3888: my @pairs=split(/\&/,$rep);
3889: foreach my $item (@pairs) {
3890: my ($key,$value)=split(/\=/,$item,2);
3891: $key = &unescape($key);
3892: next if ($key =~ /^error: 2 /);
3893: $returnhash->{$key} = &thaw_unescape($value);
3894: }
3895: }
3896: }
3897: return;
3898: }
3899:
3900: # ---------------------------------------------------------- DC e-mail
3901:
3902: sub dcmailput {
3903: my ($domain,$msgid,$message,$server)=@_;
3904: my $status = &Apache::lonnet::critical(
3905: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3906: &escape($message),$server);
3907: return $status;
3908: }
3909:
3910: sub dcmaildump {
3911: my ($dom,$startdate,$enddate,$senders) = @_;
3912: my %returnhash=();
3913:
3914: if (defined(&domain($dom,'primary'))) {
3915: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3916: &escape($enddate).':';
3917: my @esc_senders=map { &escape($_)} @$senders;
3918: $cmd.=&escape(join('&',@esc_senders));
3919: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3920: my ($key,$value) = split(/\=/,$line,2);
3921: if (($key) && ($value)) {
3922: $returnhash{&unescape($key)} = &unescape($value);
3923: }
3924: }
3925: }
3926: return %returnhash;
3927: }
3928: # ---------------------------------------------------------- Domain roles
3929:
3930: sub get_domain_roles {
3931: my ($dom,$roles,$startdate,$enddate)=@_;
3932: if ((!defined($startdate)) || ($startdate eq '')) {
3933: $startdate = '.';
3934: }
3935: if ((!defined($enddate)) || ($enddate eq '')) {
3936: $enddate = '.';
3937: }
3938: my $rolelist;
3939: if (ref($roles) eq 'ARRAY') {
3940: $rolelist = join(':',@{$roles});
3941: }
3942: my %personnel = ();
3943:
3944: my %servers = &get_servers($dom,'library');
3945: foreach my $tryserver (keys(%servers)) {
3946: %{$personnel{$tryserver}}=();
3947: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3948: &escape($startdate).':'.
3949: &escape($enddate).':'.
3950: &escape($rolelist), $tryserver))) {
3951: my ($key,$value) = split(/\=/,$line,2);
3952: if (($key) && ($value)) {
3953: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3954: }
3955: }
3956: }
3957: return %personnel;
3958: }
3959:
3960: # ----------------------------------------------------------- Interval timing
3961:
3962: {
3963: # Caches needed for speedup of navmaps
3964: # We don't want to cache this for very long at all (5 seconds at most)
3965: #
3966: # The user for whom we cache
3967: my $cachedkey='';
3968: # The cached times for this user
3969: my %cachedtimes=();
3970: # When this was last done
3971: my $cachedtime=();
3972:
3973: sub load_all_first_access {
3974: my ($uname,$udom)=@_;
3975: if (($cachedkey eq $uname.':'.$udom) &&
3976: (abs($cachedtime-time)<5)) {
3977: return;
3978: }
3979: $cachedtime=time;
3980: $cachedkey=$uname.':'.$udom;
3981: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
3982: }
3983:
3984: sub get_first_access {
3985: my ($type,$argsymb,$argmap)=@_;
3986: my ($symb,$courseid,$udom,$uname)=&whichuser();
3987: if ($argsymb) { $symb=$argsymb; }
3988: my ($map,$id,$res)=&decode_symb($symb);
3989: if ($argmap) { $map = $argmap; }
3990: if ($type eq 'course') {
3991: $res='course';
3992: } elsif ($type eq 'map') {
3993: $res=&symbread($map);
3994: } else {
3995: $res=$symb;
3996: }
3997: &load_all_first_access($uname,$udom);
3998: return $cachedtimes{"$courseid\0$res"};
3999: }
4000:
4001: sub set_first_access {
4002: my ($type,$interval)=@_;
4003: my ($symb,$courseid,$udom,$uname)=&whichuser();
4004: my ($map,$id,$res)=&decode_symb($symb);
4005: if ($type eq 'course') {
4006: $res='course';
4007: } elsif ($type eq 'map') {
4008: $res=&symbread($map);
4009: } else {
4010: $res=$symb;
4011: }
4012: $cachedkey='';
4013: my $firstaccess=&get_first_access($type,$symb,$map);
4014: if (!$firstaccess) {
4015: my $start = time;
4016: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4017: $udom,$uname);
4018: if ($putres eq 'ok') {
4019: &put('timerinterval',{"$courseid\0$res"=>$interval},
4020: $udom,$uname);
4021: &appenv(
4022: {
4023: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4024: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4025: }
4026: );
4027: }
4028: return $putres;
4029: }
4030: return 'already_set';
4031: }
4032: }
4033: # --------------------------------------------- Set Expire Date for Spreadsheet
4034:
4035: sub expirespread {
4036: my ($uname,$udom,$stype,$usymb)=@_;
4037: my $cid=$env{'request.course.id'};
4038: if ($cid) {
4039: my $now=time;
4040: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4041: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4042: $env{'course.'.$cid.'.num'}.
4043: ':nohist_expirationdates:'.
4044: &escape($key).'='.$now,
4045: $env{'course.'.$cid.'.home'})
4046: }
4047: return 'ok';
4048: }
4049:
4050: # ----------------------------------------------------- Devalidate Spreadsheets
4051:
4052: sub devalidate {
4053: my ($symb,$uname,$udom)=@_;
4054: my $cid=$env{'request.course.id'};
4055: if ($cid) {
4056: # delete the stored spreadsheets for
4057: # - the student level sheet of this user in course's homespace
4058: # - the assessment level sheet for this resource
4059: # for this user in user's homespace
4060: # - current conditional state info
4061: my $key=$uname.':'.$udom.':';
4062: my $status=
4063: &del('nohist_calculatedsheets',
4064: [$key.'studentcalc:'],
4065: $env{'course.'.$cid.'.domain'},
4066: $env{'course.'.$cid.'.num'})
4067: .' '.
4068: &del('nohist_calculatedsheets_'.$cid,
4069: [$key.'assesscalc:'.$symb],$udom,$uname);
4070: unless ($status eq 'ok ok') {
4071: &logthis('Could not devalidate spreadsheet '.
4072: $uname.' at '.$udom.' for '.
4073: $symb.': '.$status);
4074: }
4075: &delenv('user.state.'.$cid);
4076: }
4077: }
4078:
4079: sub get_scalar {
4080: my ($string,$end) = @_;
4081: my $value;
4082: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4083: $value = $1;
4084: } elsif ($$string =~ s/^([^&]*?)&//) {
4085: $value = $1;
4086: }
4087: return &unescape($value);
4088: }
4089:
4090: sub array2str {
4091: my (@array) = @_;
4092: my $result=&arrayref2str(\@array);
4093: $result=~s/^__ARRAY_REF__//;
4094: $result=~s/__END_ARRAY_REF__$//;
4095: return $result;
4096: }
4097:
4098: sub arrayref2str {
4099: my ($arrayref) = @_;
4100: my $result='__ARRAY_REF__';
4101: foreach my $elem (@$arrayref) {
4102: if(ref($elem) eq 'ARRAY') {
4103: $result.=&arrayref2str($elem).'&';
4104: } elsif(ref($elem) eq 'HASH') {
4105: $result.=&hashref2str($elem).'&';
4106: } elsif(ref($elem)) {
4107: #print("Got a ref of ".(ref($elem))." skipping.");
4108: } else {
4109: $result.=&escape($elem).'&';
4110: }
4111: }
4112: $result=~s/\&$//;
4113: $result .= '__END_ARRAY_REF__';
4114: return $result;
4115: }
4116:
4117: sub hash2str {
4118: my (%hash) = @_;
4119: my $result=&hashref2str(\%hash);
4120: $result=~s/^__HASH_REF__//;
4121: $result=~s/__END_HASH_REF__$//;
4122: return $result;
4123: }
4124:
4125: sub hashref2str {
4126: my ($hashref)=@_;
4127: my $result='__HASH_REF__';
4128: foreach my $key (sort(keys(%$hashref))) {
4129: if (ref($key) eq 'ARRAY') {
4130: $result.=&arrayref2str($key).'=';
4131: } elsif (ref($key) eq 'HASH') {
4132: $result.=&hashref2str($key).'=';
4133: } elsif (ref($key)) {
4134: $result.='=';
4135: #print("Got a ref of ".(ref($key))." skipping.");
4136: } else {
4137: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4138: }
4139:
4140: if(ref($hashref->{$key}) eq 'ARRAY') {
4141: $result.=&arrayref2str($hashref->{$key}).'&';
4142: } elsif(ref($hashref->{$key}) eq 'HASH') {
4143: $result.=&hashref2str($hashref->{$key}).'&';
4144: } elsif(ref($hashref->{$key})) {
4145: $result.='&';
4146: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4147: } else {
4148: $result.=&escape($hashref->{$key}).'&';
4149: }
4150: }
4151: $result=~s/\&$//;
4152: $result .= '__END_HASH_REF__';
4153: return $result;
4154: }
4155:
4156: sub str2hash {
4157: my ($string)=@_;
4158: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4159: return %$hash;
4160: }
4161:
4162: sub str2hashref {
4163: my ($string) = @_;
4164:
4165: my %hash;
4166:
4167: if($string !~ /^__HASH_REF__/) {
4168: if (! ($string eq '' || !defined($string))) {
4169: $hash{'error'}='Not hash reference';
4170: }
4171: return (\%hash, $string);
4172: }
4173:
4174: $string =~ s/^__HASH_REF__//;
4175:
4176: while($string !~ /^__END_HASH_REF__/) {
4177: #key
4178: my $key='';
4179: if($string =~ /^__HASH_REF__/) {
4180: ($key, $string)=&str2hashref($string);
4181: if(defined($key->{'error'})) {
4182: $hash{'error'}='Bad data';
4183: return (\%hash, $string);
4184: }
4185: } elsif($string =~ /^__ARRAY_REF__/) {
4186: ($key, $string)=&str2arrayref($string);
4187: if($key->[0] eq 'Array reference error') {
4188: $hash{'error'}='Bad data';
4189: return (\%hash, $string);
4190: }
4191: } else {
4192: $string =~ s/^(.*?)=//;
4193: $key=&unescape($1);
4194: }
4195: $string =~ s/^=//;
4196:
4197: #value
4198: my $value='';
4199: if($string =~ /^__HASH_REF__/) {
4200: ($value, $string)=&str2hashref($string);
4201: if(defined($value->{'error'})) {
4202: $hash{'error'}='Bad data';
4203: return (\%hash, $string);
4204: }
4205: } elsif($string =~ /^__ARRAY_REF__/) {
4206: ($value, $string)=&str2arrayref($string);
4207: if($value->[0] eq 'Array reference error') {
4208: $hash{'error'}='Bad data';
4209: return (\%hash, $string);
4210: }
4211: } else {
4212: $value=&get_scalar(\$string,'__END_HASH_REF__');
4213: }
4214: $string =~ s/^&//;
4215:
4216: $hash{$key}=$value;
4217: }
4218:
4219: $string =~ s/^__END_HASH_REF__//;
4220:
4221: return (\%hash, $string);
4222: }
4223:
4224: sub str2array {
4225: my ($string)=@_;
4226: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4227: return @$array;
4228: }
4229:
4230: sub str2arrayref {
4231: my ($string) = @_;
4232: my @array;
4233:
4234: if($string !~ /^__ARRAY_REF__/) {
4235: if (! ($string eq '' || !defined($string))) {
4236: $array[0]='Array reference error';
4237: }
4238: return (\@array, $string);
4239: }
4240:
4241: $string =~ s/^__ARRAY_REF__//;
4242:
4243: while($string !~ /^__END_ARRAY_REF__/) {
4244: my $value='';
4245: if($string =~ /^__HASH_REF__/) {
4246: ($value, $string)=&str2hashref($string);
4247: if(defined($value->{'error'})) {
4248: $array[0] ='Array reference error';
4249: return (\@array, $string);
4250: }
4251: } elsif($string =~ /^__ARRAY_REF__/) {
4252: ($value, $string)=&str2arrayref($string);
4253: if($value->[0] eq 'Array reference error') {
4254: $array[0] ='Array reference error';
4255: return (\@array, $string);
4256: }
4257: } else {
4258: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4259: }
4260: $string =~ s/^&//;
4261:
4262: push(@array, $value);
4263: }
4264:
4265: $string =~ s/^__END_ARRAY_REF__//;
4266:
4267: return (\@array, $string);
4268: }
4269:
4270: # -------------------------------------------------------------------Temp Store
4271:
4272: sub tmpreset {
4273: my ($symb,$namespace,$domain,$stuname) = @_;
4274: if (!$symb) {
4275: $symb=&symbread();
4276: if (!$symb) { $symb= $env{'request.url'}; }
4277: }
4278: $symb=escape($symb);
4279:
4280: if (!$namespace) { $namespace=$env{'request.state'}; }
4281: $namespace=~s/\//\_/g;
4282: $namespace=~s/\W//g;
4283:
4284: if (!$domain) { $domain=$env{'user.domain'}; }
4285: if (!$stuname) { $stuname=$env{'user.name'}; }
4286: if ($domain eq 'public' && $stuname eq 'public') {
4287: $stuname=$ENV{'REMOTE_ADDR'};
4288: }
4289: my $path=LONCAPA::tempdir();
4290: my %hash;
4291: if (tie(%hash,'GDBM_File',
4292: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4293: &GDBM_WRCREAT(),0640)) {
4294: foreach my $key (keys(%hash)) {
4295: if ($key=~ /:$symb/) {
4296: delete($hash{$key});
4297: }
4298: }
4299: }
4300: }
4301:
4302: sub tmpstore {
4303: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4304:
4305: if (!$symb) {
4306: $symb=&symbread();
4307: if (!$symb) { $symb= $env{'request.url'}; }
4308: }
4309: $symb=escape($symb);
4310:
4311: if (!$namespace) {
4312: # I don't think we would ever want to store this for a course.
4313: # it seems this will only be used if we don't have a course.
4314: #$namespace=$env{'request.course.id'};
4315: #if (!$namespace) {
4316: $namespace=$env{'request.state'};
4317: #}
4318: }
4319: $namespace=~s/\//\_/g;
4320: $namespace=~s/\W//g;
4321: if (!$domain) { $domain=$env{'user.domain'}; }
4322: if (!$stuname) { $stuname=$env{'user.name'}; }
4323: if ($domain eq 'public' && $stuname eq 'public') {
4324: $stuname=$ENV{'REMOTE_ADDR'};
4325: }
4326: my $now=time;
4327: my %hash;
4328: my $path=LONCAPA::tempdir();
4329: if (tie(%hash,'GDBM_File',
4330: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4331: &GDBM_WRCREAT(),0640)) {
4332: $hash{"version:$symb"}++;
4333: my $version=$hash{"version:$symb"};
4334: my $allkeys='';
4335: foreach my $key (keys(%$storehash)) {
4336: $allkeys.=$key.':';
4337: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4338: }
4339: $hash{"$version:$symb:timestamp"}=$now;
4340: $allkeys.='timestamp';
4341: $hash{"$version:keys:$symb"}=$allkeys;
4342: if (untie(%hash)) {
4343: return 'ok';
4344: } else {
4345: return "error:$!";
4346: }
4347: } else {
4348: return "error:$!";
4349: }
4350: }
4351:
4352: # -----------------------------------------------------------------Temp Restore
4353:
4354: sub tmprestore {
4355: my ($symb,$namespace,$domain,$stuname) = @_;
4356:
4357: if (!$symb) {
4358: $symb=&symbread();
4359: if (!$symb) { $symb= $env{'request.url'}; }
4360: }
4361: $symb=escape($symb);
4362:
4363: if (!$namespace) { $namespace=$env{'request.state'}; }
4364:
4365: if (!$domain) { $domain=$env{'user.domain'}; }
4366: if (!$stuname) { $stuname=$env{'user.name'}; }
4367: if ($domain eq 'public' && $stuname eq 'public') {
4368: $stuname=$ENV{'REMOTE_ADDR'};
4369: }
4370: my %returnhash;
4371: $namespace=~s/\//\_/g;
4372: $namespace=~s/\W//g;
4373: my %hash;
4374: my $path=LONCAPA::tempdir();
4375: if (tie(%hash,'GDBM_File',
4376: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4377: &GDBM_READER(),0640)) {
4378: my $version=$hash{"version:$symb"};
4379: $returnhash{'version'}=$version;
4380: my $scope;
4381: for ($scope=1;$scope<=$version;$scope++) {
4382: my $vkeys=$hash{"$scope:keys:$symb"};
4383: my @keys=split(/:/,$vkeys);
4384: my $key;
4385: $returnhash{"$scope:keys"}=$vkeys;
4386: foreach $key (@keys) {
4387: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4388: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4389: }
4390: }
4391: if (!(untie(%hash))) {
4392: return "error:$!";
4393: }
4394: } else {
4395: return "error:$!";
4396: }
4397: return %returnhash;
4398: }
4399:
4400: # ----------------------------------------------------------------------- Store
4401:
4402: sub store {
4403: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4404: my $home='';
4405:
4406: if ($stuname) { $home=&homeserver($stuname,$domain); }
4407:
4408: $symb=&symbclean($symb);
4409: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4410:
4411: if (!$domain) { $domain=$env{'user.domain'}; }
4412: if (!$stuname) { $stuname=$env{'user.name'}; }
4413:
4414: &devalidate($symb,$stuname,$domain);
4415:
4416: $symb=escape($symb);
4417: if (!$namespace) {
4418: unless ($namespace=$env{'request.course.id'}) {
4419: return '';
4420: }
4421: }
4422: if (!$home) { $home=$env{'user.home'}; }
4423:
4424: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4425: $$storehash{'host'}=$perlvar{'lonHostID'};
4426:
4427: my $namevalue='';
4428: foreach my $key (keys(%$storehash)) {
4429: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4430: }
4431: $namevalue=~s/\&$//;
4432: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4433: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4434: }
4435:
4436: # -------------------------------------------------------------- Critical Store
4437:
4438: sub cstore {
4439: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4440: my $home='';
4441:
4442: if ($stuname) { $home=&homeserver($stuname,$domain); }
4443:
4444: $symb=&symbclean($symb);
4445: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4446:
4447: if (!$domain) { $domain=$env{'user.domain'}; }
4448: if (!$stuname) { $stuname=$env{'user.name'}; }
4449:
4450: &devalidate($symb,$stuname,$domain);
4451:
4452: $symb=escape($symb);
4453: if (!$namespace) {
4454: unless ($namespace=$env{'request.course.id'}) {
4455: return '';
4456: }
4457: }
4458: if (!$home) { $home=$env{'user.home'}; }
4459:
4460: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4461: $$storehash{'host'}=$perlvar{'lonHostID'};
4462:
4463: my $namevalue='';
4464: foreach my $key (keys(%$storehash)) {
4465: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4466: }
4467: $namevalue=~s/\&$//;
4468: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4469: return critical
4470: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4471: }
4472:
4473: # --------------------------------------------------------------------- Restore
4474:
4475: sub restore {
4476: my ($symb,$namespace,$domain,$stuname) = @_;
4477: my $home='';
4478:
4479: if ($stuname) { $home=&homeserver($stuname,$domain); }
4480:
4481: if (!$symb) {
4482: unless ($symb=escape(&symbread())) { return ''; }
4483: } else {
4484: $symb=&escape(&symbclean($symb));
4485: }
4486: if (!$namespace) {
4487: unless ($namespace=$env{'request.course.id'}) {
4488: return '';
4489: }
4490: }
4491: if (!$domain) { $domain=$env{'user.domain'}; }
4492: if (!$stuname) { $stuname=$env{'user.name'}; }
4493: if (!$home) { $home=$env{'user.home'}; }
4494: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4495:
4496: my %returnhash=();
4497: foreach my $line (split(/\&/,$answer)) {
4498: my ($name,$value)=split(/\=/,$line);
4499: $returnhash{&unescape($name)}=&thaw_unescape($value);
4500: }
4501: my $version;
4502: for ($version=1;$version<=$returnhash{'version'};$version++) {
4503: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4504: $returnhash{$item}=$returnhash{$version.':'.$item};
4505: }
4506: }
4507: return %returnhash;
4508: }
4509:
4510: # ---------------------------------------------------------- Course Description
4511: #
4512: #
4513:
4514: sub coursedescription {
4515: my ($courseid,$args)=@_;
4516: $courseid=~s/^\///;
4517: $courseid=~s/\_/\//g;
4518: my ($cdomain,$cnum)=split(/\//,$courseid);
4519: my $chome=&homeserver($cnum,$cdomain);
4520: my $normalid=$cdomain.'_'.$cnum;
4521: # need to always cache even if we get errors otherwise we keep
4522: # trying and trying and trying to get the course description.
4523: my %envhash=();
4524: my %returnhash=();
4525:
4526: my $expiretime=600;
4527: if ($env{'request.course.id'} eq $normalid) {
4528: $expiretime=120;
4529: }
4530:
4531: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4532: if (!$args->{'freshen_cache'}
4533: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4534: foreach my $key (keys(%env)) {
4535: next if ($key !~ /^\Q$prefix\E(.*)/);
4536: my ($setting) = $1;
4537: $returnhash{$setting} = $env{$key};
4538: }
4539: return %returnhash;
4540: }
4541:
4542: # get the data again
4543:
4544: if (!$args->{'one_time'}) {
4545: $envhash{'course.'.$normalid.'.last_cache'}=time;
4546: }
4547:
4548: if ($chome ne 'no_host') {
4549: %returnhash=&dump('environment',$cdomain,$cnum);
4550: if (!exists($returnhash{'con_lost'})) {
4551: my $username = $env{'user.name'}; # Defult username
4552: if(defined $args->{'user'}) {
4553: $username = $args->{'user'};
4554: }
4555: $returnhash{'home'}= $chome;
4556: $returnhash{'domain'} = $cdomain;
4557: $returnhash{'num'} = $cnum;
4558: if (!defined($returnhash{'type'})) {
4559: $returnhash{'type'} = 'Course';
4560: }
4561: while (my ($name,$value) = each %returnhash) {
4562: $envhash{'course.'.$normalid.'.'.$name}=$value;
4563: }
4564: $returnhash{'url'}=&clutter($returnhash{'url'});
4565: $returnhash{'fn'}=LONCAPA::tempdir() .
4566: $username.'_'.$cdomain.'_'.$cnum;
4567: $envhash{'course.'.$normalid.'.home'}=$chome;
4568: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4569: $envhash{'course.'.$normalid.'.num'}=$cnum;
4570: }
4571: }
4572: if (!$args->{'one_time'}) {
4573: &appenv(\%envhash);
4574: }
4575: return %returnhash;
4576: }
4577:
4578: sub update_released_required {
4579: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4580: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4581: $cid = $env{'request.course.id'};
4582: $cdom = $env{'course.'.$cid.'.domain'};
4583: $cnum = $env{'course.'.$cid.'.num'};
4584: $chome = $env{'course.'.$cid.'.home'};
4585: }
4586: if ($needsrelease) {
4587: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4588: my $needsupdate;
4589: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4590: $needsupdate = 1;
4591: } else {
4592: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4593: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4594: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4595: $needsupdate = 1;
4596: }
4597: }
4598: if ($needsupdate) {
4599: my %needshash = (
4600: 'internal.releaserequired' => $needsrelease,
4601: );
4602: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4603: if ($putresult eq 'ok') {
4604: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4605: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4606: if (ref($crsinfo{$cid}) eq 'HASH') {
4607: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4608: &courseidput($cdom,\%crsinfo,$chome,'notime');
4609: }
4610: }
4611: }
4612: }
4613: return;
4614: }
4615:
4616: # -------------------------------------------------See if a user is privileged
4617:
4618: sub privileged {
4619: my ($username,$domain)=@_;
4620: my $rolesdump=&reply("dump:$domain:$username:roles",
4621: &homeserver($username,$domain));
4622: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4623: ($rolesdump =~ /^error:/)) {
4624: return 0;
4625: }
4626: my $now=time;
4627: if ($rolesdump ne '') {
4628: foreach my $entry (split(/&/,$rolesdump)) {
4629: if ($entry!~/^rolesdef_/) {
4630: my ($area,$role)=split(/=/,$entry);
4631: $area=~s/\_\w\w$//;
4632: my ($trole,$tend,$tstart)=split(/_/,$role);
4633: if (($trole eq 'dc') || ($trole eq 'su')) {
4634: my $active=1;
4635: if ($tend) {
4636: if ($tend<$now) { $active=0; }
4637: }
4638: if ($tstart) {
4639: if ($tstart>$now) { $active=0; }
4640: }
4641: if ($active) { return 1; }
4642: }
4643: }
4644: }
4645: }
4646: return 0;
4647: }
4648:
4649: # -------------------------------------------------------- Get user privileges
4650:
4651: sub rolesinit {
4652: my ($domain,$username,$authhost)=@_;
4653: my $now=time;
4654: my %userroles = ('user.login.time' => $now);
4655: my $extra = &freeze_escape({'skipcheck' => 1});
4656: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4657: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4658: ($rolesdump =~ /^error:/)) {
4659: return \%userroles;
4660: }
4661: my %firstaccess = &dump('firstaccesstimes',$domain,$username);
4662: my %timerinterval = &dump('timerinterval',$domain,$username);
4663: my (%coursetimerstarts,%firstaccchk,%firstaccenv,
4664: %coursetimerintervals,%timerintchk,%timerintenv);
4665: foreach my $key (keys(%firstaccess)) {
4666: my ($cid,$rest) = split(/\0/,$key);
4667: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4668: }
4669: foreach my $key (keys(%timerinterval)) {
4670: my ($cid,$rest) = split(/\0/,$key);
4671: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4672: }
4673: my %allroles=();
4674: my %allgroups=();
4675:
4676: if ($rolesdump ne '') {
4677: foreach my $entry (split(/&/,$rolesdump)) {
4678: if ($entry!~/^rolesdef_/) {
4679: my ($area,$role)=split(/=/,$entry);
4680: $area=~s/\_\w\w$//;
4681: my ($trole,$tend,$tstart,$group_privs);
4682: if ($role=~/^cr/) {
4683: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4684: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4685: ($tend,$tstart)=split('_',$trest);
4686: } else {
4687: $trole=$role;
4688: }
4689: } elsif ($role =~ m|^gr/|) {
4690: ($trole,$tend,$tstart) = split(/_/,$role);
4691: next if ($tstart eq '-1');
4692: ($trole,$group_privs) = split(/\//,$trole);
4693: $group_privs = &unescape($group_privs);
4694: } else {
4695: ($trole,$tend,$tstart)=split(/_/,$role);
4696: }
4697: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4698: $username);
4699: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4700: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4701: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4702: if (($area ne '') && ($trole ne '')) {
4703: my $spec=$trole.'.'.$area;
4704: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4705: if ($trole =~ /^cr\//) {
4706: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4707: } elsif ($trole eq 'gr') {
4708: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4709: } else {
4710: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4711: }
4712: if ($trole ne 'gr') {
4713: my $cid = $tdomain.'_'.$trest;
4714: unless ($firstaccchk{$cid}) {
4715: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4716: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4717: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4718: $coursetimerstarts{$cid}{$item};
4719: }
4720: }
4721: $firstaccchk{$cid} = 1;
4722: }
4723: unless ($timerintchk{$cid}) {
4724: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
4725: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
4726: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
4727: $coursetimerintervals{$cid}{$item};
4728: }
4729: }
4730: $timerintchk{$cid} = 1;
4731: }
4732: }
4733: }
4734: }
4735: }
4736: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4737: $userroles{'user.adv'} = $adv;
4738: $userroles{'user.author'} = $author;
4739: $env{'user.adv'}=$adv;
4740: }
4741: return (\%userroles,\%firstaccenv,\%timerintenv);
4742: }
4743:
4744: sub set_arearole {
4745: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4746: # log the associated role with the area
4747: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4748: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4749: }
4750:
4751: sub custom_roleprivs {
4752: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4753: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4754: my $homsvr=homeserver($rauthor,$rdomain);
4755: if (&hostname($homsvr) ne '') {
4756: my ($rdummy,$roledef)=
4757: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4758: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4759: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4760: if (defined($syspriv)) {
4761: if ($trest =~ /^$match_community$/) {
4762: $syspriv =~ s/bre\&S//;
4763: }
4764: $$allroles{'cm./'}.=':'.$syspriv;
4765: $$allroles{$spec.'./'}.=':'.$syspriv;
4766: }
4767: if ($tdomain ne '') {
4768: if (defined($dompriv)) {
4769: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4770: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4771: }
4772: if (($trest ne '') && (defined($coursepriv))) {
4773: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4774: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4775: }
4776: }
4777: }
4778: }
4779: }
4780:
4781: sub group_roleprivs {
4782: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4783: my $access = 1;
4784: my $now = time;
4785: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4786: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4787: if ($access) {
4788: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4789: $$allgroups{$course}{$group} .=':'.$group_privs;
4790: }
4791: }
4792:
4793: sub standard_roleprivs {
4794: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4795: if (defined($pr{$trole.':s'})) {
4796: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4797: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4798: }
4799: if ($tdomain ne '') {
4800: if (defined($pr{$trole.':d'})) {
4801: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4802: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4803: }
4804: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4805: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4806: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4807: }
4808: }
4809: }
4810:
4811: sub set_userprivs {
4812: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4813: my $author=0;
4814: my $adv=0;
4815: my %grouproles = ();
4816: if (keys(%{$allgroups}) > 0) {
4817: my @groupkeys;
4818: foreach my $role (keys(%{$allroles})) {
4819: push(@groupkeys,$role);
4820: }
4821: if (ref($groups_roles) eq 'HASH') {
4822: foreach my $key (keys(%{$groups_roles})) {
4823: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4824: push(@groupkeys,$key);
4825: }
4826: }
4827: }
4828: if (@groupkeys > 0) {
4829: foreach my $role (@groupkeys) {
4830: my ($trole,$area,$sec,$extendedarea);
4831: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4832: $trole = $1;
4833: $area = $2;
4834: $sec = $3;
4835: $extendedarea = $area.$sec;
4836: if (exists($$allgroups{$area})) {
4837: foreach my $group (keys(%{$$allgroups{$area}})) {
4838: my $spec = $trole.'.'.$extendedarea;
4839: $grouproles{$spec.'.'.$area.'/'.$group} =
4840: $$allgroups{$area}{$group};
4841: }
4842: }
4843: }
4844: }
4845: }
4846: }
4847: foreach my $group (keys(%grouproles)) {
4848: $$allroles{$group} = $grouproles{$group};
4849: }
4850: foreach my $role (keys(%{$allroles})) {
4851: my %thesepriv;
4852: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4853: foreach my $item (split(/:/,$$allroles{$role})) {
4854: if ($item ne '') {
4855: my ($privilege,$restrictions)=split(/&/,$item);
4856: if ($restrictions eq '') {
4857: $thesepriv{$privilege}='F';
4858: } elsif ($thesepriv{$privilege} ne 'F') {
4859: $thesepriv{$privilege}.=$restrictions;
4860: }
4861: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4862: }
4863: }
4864: my $thesestr='';
4865: foreach my $priv (sort(keys(%thesepriv))) {
4866: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4867: }
4868: $userroles->{'user.priv.'.$role} = $thesestr;
4869: }
4870: return ($author,$adv);
4871: }
4872:
4873: sub role_status {
4874: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4875: my @pwhere = ();
4876: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4877: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4878: unless (!defined($$role) || $$role eq '') {
4879: $$where=join('.',@pwhere);
4880: $$trolecode=$$role.'.'.$$where;
4881: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4882: $$tstatus='is';
4883: if ($$tstart && $$tstart>$update) {
4884: $$tstatus='future';
4885: if ($$tstart<$now) {
4886: if ($$tstart && $$tstart>$refresh) {
4887: if (($$where ne '') && ($$role ne '')) {
4888: my (%allroles,%allgroups,$group_privs,
4889: %groups_roles,@rolecodes);
4890: my %userroles = (
4891: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4892: );
4893: @rolecodes = ('cm');
4894: my $spec=$$role.'.'.$$where;
4895: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4896: if ($$role =~ /^cr\//) {
4897: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4898: push(@rolecodes,'cr');
4899: } elsif ($$role eq 'gr') {
4900: push(@rolecodes,$$role);
4901: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4902: $env{'user.name'});
4903: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4904: (undef,my $group_privs) = split(/\//,$trole);
4905: $group_privs = &unescape($group_privs);
4906: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4907: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4908: &get_groups_roles($tdomain,$trest,
4909: \%course_roles,\@rolecodes,
4910: \%groups_roles);
4911: } else {
4912: push(@rolecodes,$$role);
4913: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4914: }
4915: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4916: &appenv(\%userroles,\@rolecodes);
4917: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4918: }
4919: }
4920: $$tstatus = 'is';
4921: }
4922: }
4923: if ($$tend) {
4924: if ($$tend<$update) {
4925: $$tstatus='expired';
4926: } elsif ($$tend<$now) {
4927: $$tstatus='will_not';
4928: }
4929: }
4930: }
4931: }
4932: }
4933:
4934: sub get_groups_roles {
4935: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4936: return unless((ref($cdom_courseroles) eq 'HASH') &&
4937: (ref($rolecodes) eq 'ARRAY') &&
4938: (ref($groups_roles) eq 'HASH'));
4939: if (keys(%{$cdom_courseroles}) > 0) {
4940: my ($cnum) = ($rest =~ /^($match_courseid)/);
4941: if ($cdom ne '' && $cnum ne '') {
4942: foreach my $key (keys(%{$cdom_courseroles})) {
4943: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4944: my $crsrole = $1;
4945: my $crssec = $2;
4946: if ($crsrole =~ /^cr/) {
4947: unless (grep(/^cr$/,@{$rolecodes})) {
4948: push(@{$rolecodes},'cr');
4949: }
4950: } else {
4951: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4952: push(@{$rolecodes},$crsrole);
4953: }
4954: }
4955: my $rolekey = "$crsrole./$cdom/$cnum";
4956: if ($crssec ne '') {
4957: $rolekey .= "/$crssec";
4958: }
4959: $rolekey .= './';
4960: $groups_roles->{$rolekey} = $rolecodes;
4961: }
4962: }
4963: }
4964: }
4965: return;
4966: }
4967:
4968: sub delete_env_groupprivs {
4969: my ($where,$courseroles,$possroles) = @_;
4970: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4971: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4972: unless (ref($courseroles->{$udom}) eq 'HASH') {
4973: %{$courseroles->{$udom}} =
4974: &get_my_roles('','','userroles',['active'],
4975: $possroles,[$udom],1);
4976: }
4977: if (ref($courseroles->{$udom}) eq 'HASH') {
4978: foreach my $item (keys(%{$courseroles->{$udom}})) {
4979: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4980: my $area = '/'.$cdom.'/'.$cnum;
4981: my $privkey = "user.priv.$crsrole.$area";
4982: if ($crssec ne '') {
4983: $privkey .= '/'.$crssec;
4984: }
4985: $privkey .= ".$area/$group";
4986: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
4987: }
4988: }
4989: return;
4990: }
4991:
4992: sub check_adhoc_privs {
4993: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
4994: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4995: if ($env{$cckey}) {
4996: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4997: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4998: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4999: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5000: }
5001: } else {
5002: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5003: }
5004: }
5005:
5006: sub set_adhoc_privileges {
5007: # role can be cc or ca
5008: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5009: my $area = '/'.$dcdom.'/'.$pickedcourse;
5010: my $spec = $role.'.'.$area;
5011: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5012: $env{'user.name'});
5013: my %ccrole = ();
5014: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5015: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5016: &appenv(\%userroles,[$role,'cm']);
5017: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5018: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5019: &appenv( {'request.role' => $spec,
5020: 'request.role.domain' => $dcdom,
5021: 'request.course.sec' => ''
5022: }
5023: );
5024: my $tadv=0;
5025: if (&allowed('adv') eq 'F') { $tadv=1; }
5026: &appenv({'request.role.adv' => $tadv});
5027: }
5028: }
5029:
5030: # --------------------------------------------------------------- get interface
5031:
5032: sub get {
5033: my ($namespace,$storearr,$udomain,$uname)=@_;
5034: my $items='';
5035: foreach my $item (@$storearr) {
5036: $items.=&escape($item).'&';
5037: }
5038: $items=~s/\&$//;
5039: if (!$udomain) { $udomain=$env{'user.domain'}; }
5040: if (!$uname) { $uname=$env{'user.name'}; }
5041: my $uhome=&homeserver($uname,$udomain);
5042:
5043: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5044: my @pairs=split(/\&/,$rep);
5045: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5046: return @pairs;
5047: }
5048: my %returnhash=();
5049: my $i=0;
5050: foreach my $item (@$storearr) {
5051: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5052: $i++;
5053: }
5054: return %returnhash;
5055: }
5056:
5057: # --------------------------------------------------------------- del interface
5058:
5059: sub del {
5060: my ($namespace,$storearr,$udomain,$uname)=@_;
5061: my $items='';
5062: foreach my $item (@$storearr) {
5063: $items.=&escape($item).'&';
5064: }
5065:
5066: $items=~s/\&$//;
5067: if (!$udomain) { $udomain=$env{'user.domain'}; }
5068: if (!$uname) { $uname=$env{'user.name'}; }
5069: my $uhome=&homeserver($uname,$udomain);
5070: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5071: }
5072:
5073: # -------------------------------------------------------------- dump interface
5074:
5075: sub dump {
5076: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
5077: if (!$udomain) { $udomain=$env{'user.domain'}; }
5078: if (!$uname) { $uname=$env{'user.name'}; }
5079: my $uhome=&homeserver($uname,$udomain);
5080: if ($regexp) {
5081: $regexp=&escape($regexp);
5082: } else {
5083: $regexp='.';
5084: }
5085: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
5086: my @pairs=split(/\&/,$rep);
5087: my %returnhash=();
5088: if (!($rep =~ /^error/ )) {
5089: foreach my $item (@pairs) {
5090: my ($key,$value)=split(/=/,$item,2);
5091: $key = &unescape($key);
5092: next if ($key =~ /^error: 2 /);
5093: $returnhash{$key}=&thaw_unescape($value);
5094: }
5095: }
5096: return %returnhash;
5097: }
5098:
5099:
5100: # --------------------------------------------------------- dumpstore interface
5101:
5102: sub dumpstore {
5103: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5104: if (!$udomain) { $udomain=$env{'user.domain'}; }
5105: if (!$uname) { $uname=$env{'user.name'}; }
5106: my $uhome=&homeserver($uname,$udomain);
5107: if ($regexp) {
5108: $regexp=&escape($regexp);
5109: } else {
5110: $regexp='.';
5111: }
5112: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5113: my @pairs=split(/\&/,$rep);
5114: my %returnhash=();
5115: foreach my $item (@pairs) {
5116: my ($key,$value)=split(/=/,$item,2);
5117: next if ($key =~ /^error: 2 /);
5118: $returnhash{$key}=&thaw_unescape($value);
5119: }
5120: return %returnhash;
5121: }
5122:
5123: # -------------------------------------------------------------- keys interface
5124:
5125: sub getkeys {
5126: my ($namespace,$udomain,$uname)=@_;
5127: if (!$udomain) { $udomain=$env{'user.domain'}; }
5128: if (!$uname) { $uname=$env{'user.name'}; }
5129: my $uhome=&homeserver($uname,$udomain);
5130: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5131: my @keyarray=();
5132: foreach my $key (split(/\&/,$rep)) {
5133: next if ($key =~ /^error: 2 /);
5134: push(@keyarray,&unescape($key));
5135: }
5136: return @keyarray;
5137: }
5138:
5139: # --------------------------------------------------------------- currentdump
5140: sub currentdump {
5141: my ($courseid,$sdom,$sname)=@_;
5142: $courseid = $env{'request.course.id'} if (! defined($courseid));
5143: $sdom = $env{'user.domain'} if (! defined($sdom));
5144: $sname = $env{'user.name'} if (! defined($sname));
5145: my $uhome = &homeserver($sname,$sdom);
5146: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5147: return if ($rep =~ /^(error:|no_such_host)/);
5148: #
5149: my %returnhash=();
5150: #
5151: if ($rep eq "unknown_cmd") {
5152: # an old lond will not know currentdump
5153: # Do a dump and make it look like a currentdump
5154: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5155: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5156: my %hash = @tmp;
5157: @tmp=();
5158: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5159: } else {
5160: my @pairs=split(/\&/,$rep);
5161: foreach my $pair (@pairs) {
5162: my ($key,$value)=split(/=/,$pair,2);
5163: my ($symb,$param) = split(/:/,$key);
5164: $returnhash{&unescape($symb)}->{&unescape($param)} =
5165: &thaw_unescape($value);
5166: }
5167: }
5168: return %returnhash;
5169: }
5170:
5171: sub convert_dump_to_currentdump{
5172: my %hash = %{shift()};
5173: my %returnhash;
5174: # Code ripped from lond, essentially. The only difference
5175: # here is the unescaping done by lonnet::dump(). Conceivably
5176: # we might run in to problems with parameter names =~ /^v\./
5177: while (my ($key,$value) = each(%hash)) {
5178: my ($v,$symb,$param) = split(/:/,$key);
5179: $symb = &unescape($symb);
5180: $param = &unescape($param);
5181: next if ($v eq 'version' || $symb eq 'keys');
5182: next if (exists($returnhash{$symb}) &&
5183: exists($returnhash{$symb}->{$param}) &&
5184: $returnhash{$symb}->{'v.'.$param} > $v);
5185: $returnhash{$symb}->{$param}=$value;
5186: $returnhash{$symb}->{'v.'.$param}=$v;
5187: }
5188: #
5189: # Remove all of the keys in the hashes which keep track of
5190: # the version of the parameter.
5191: while (my ($symb,$param_hash) = each(%returnhash)) {
5192: # use a foreach because we are going to delete from the hash.
5193: foreach my $key (keys(%$param_hash)) {
5194: delete($param_hash->{$key}) if ($key =~ /^v\./);
5195: }
5196: }
5197: return \%returnhash;
5198: }
5199:
5200: # ------------------------------------------------------ critical inc interface
5201:
5202: sub cinc {
5203: return &inc(@_,'critical');
5204: }
5205:
5206: # --------------------------------------------------------------- inc interface
5207:
5208: sub inc {
5209: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5210: if (!$udomain) { $udomain=$env{'user.domain'}; }
5211: if (!$uname) { $uname=$env{'user.name'}; }
5212: my $uhome=&homeserver($uname,$udomain);
5213: my $items='';
5214: if (! ref($store)) {
5215: # got a single value, so use that instead
5216: $items = &escape($store).'=&';
5217: } elsif (ref($store) eq 'SCALAR') {
5218: $items = &escape($$store).'=&';
5219: } elsif (ref($store) eq 'ARRAY') {
5220: $items = join('=&',map {&escape($_);} @{$store});
5221: } elsif (ref($store) eq 'HASH') {
5222: while (my($key,$value) = each(%{$store})) {
5223: $items.= &escape($key).'='.&escape($value).'&';
5224: }
5225: }
5226: $items=~s/\&$//;
5227: if ($critical) {
5228: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5229: } else {
5230: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5231: }
5232: }
5233:
5234: # --------------------------------------------------------------- put interface
5235:
5236: sub put {
5237: my ($namespace,$storehash,$udomain,$uname)=@_;
5238: if (!$udomain) { $udomain=$env{'user.domain'}; }
5239: if (!$uname) { $uname=$env{'user.name'}; }
5240: my $uhome=&homeserver($uname,$udomain);
5241: my $items='';
5242: foreach my $item (keys(%$storehash)) {
5243: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5244: }
5245: $items=~s/\&$//;
5246: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5247: }
5248:
5249: # ------------------------------------------------------------ newput interface
5250:
5251: sub newput {
5252: my ($namespace,$storehash,$udomain,$uname)=@_;
5253: if (!$udomain) { $udomain=$env{'user.domain'}; }
5254: if (!$uname) { $uname=$env{'user.name'}; }
5255: my $uhome=&homeserver($uname,$udomain);
5256: my $items='';
5257: foreach my $key (keys(%$storehash)) {
5258: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5259: }
5260: $items=~s/\&$//;
5261: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5262: }
5263:
5264: # --------------------------------------------------------- putstore interface
5265:
5266: sub putstore {
5267: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5268: if (!$udomain) { $udomain=$env{'user.domain'}; }
5269: if (!$uname) { $uname=$env{'user.name'}; }
5270: my $uhome=&homeserver($uname,$udomain);
5271: my $items='';
5272: foreach my $key (keys(%$storehash)) {
5273: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5274: }
5275: $items=~s/\&$//;
5276: my $esc_symb=&escape($symb);
5277: my $esc_v=&escape($version);
5278: my $reply =
5279: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5280: $uhome);
5281: if ($reply eq 'unknown_cmd') {
5282: # gfall back to way things use to be done
5283: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5284: $uname);
5285: }
5286: return $reply;
5287: }
5288:
5289: sub old_putstore {
5290: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5291: if (!$udomain) { $udomain=$env{'user.domain'}; }
5292: if (!$uname) { $uname=$env{'user.name'}; }
5293: my $uhome=&homeserver($uname,$udomain);
5294: my %newstorehash;
5295: foreach my $item (keys(%$storehash)) {
5296: my $key = $version.':'.&escape($symb).':'.$item;
5297: $newstorehash{$key} = $storehash->{$item};
5298: }
5299: my $items='';
5300: my %allitems = ();
5301: foreach my $item (keys(%newstorehash)) {
5302: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5303: my $key = $1.':keys:'.$2;
5304: $allitems{$key} .= $3.':';
5305: }
5306: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5307: }
5308: foreach my $item (keys(%allitems)) {
5309: $allitems{$item} =~ s/\:$//;
5310: $items.= $item.'='.$allitems{$item}.'&';
5311: }
5312: $items=~s/\&$//;
5313: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5314: }
5315:
5316: # ------------------------------------------------------ critical put interface
5317:
5318: sub cput {
5319: my ($namespace,$storehash,$udomain,$uname)=@_;
5320: if (!$udomain) { $udomain=$env{'user.domain'}; }
5321: if (!$uname) { $uname=$env{'user.name'}; }
5322: my $uhome=&homeserver($uname,$udomain);
5323: my $items='';
5324: foreach my $item (keys(%$storehash)) {
5325: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5326: }
5327: $items=~s/\&$//;
5328: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5329: }
5330:
5331: # -------------------------------------------------------------- eget interface
5332:
5333: sub eget {
5334: my ($namespace,$storearr,$udomain,$uname)=@_;
5335: my $items='';
5336: foreach my $item (@$storearr) {
5337: $items.=&escape($item).'&';
5338: }
5339: $items=~s/\&$//;
5340: if (!$udomain) { $udomain=$env{'user.domain'}; }
5341: if (!$uname) { $uname=$env{'user.name'}; }
5342: my $uhome=&homeserver($uname,$udomain);
5343: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5344: my @pairs=split(/\&/,$rep);
5345: my %returnhash=();
5346: my $i=0;
5347: foreach my $item (@$storearr) {
5348: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5349: $i++;
5350: }
5351: return %returnhash;
5352: }
5353:
5354: # ------------------------------------------------------------ tmpput interface
5355: sub tmpput {
5356: my ($storehash,$server,$context)=@_;
5357: my $items='';
5358: foreach my $item (keys(%$storehash)) {
5359: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5360: }
5361: $items=~s/\&$//;
5362: if (defined($context)) {
5363: $items .= ':'.&escape($context);
5364: }
5365: return &reply("tmpput:$items",$server);
5366: }
5367:
5368: # ------------------------------------------------------------ tmpget interface
5369: sub tmpget {
5370: my ($token,$server)=@_;
5371: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5372: my $rep=&reply("tmpget:$token",$server);
5373: my %returnhash;
5374: foreach my $item (split(/\&/,$rep)) {
5375: my ($key,$value)=split(/=/,$item);
5376: next if ($key =~ /^error: 2 /);
5377: $returnhash{&unescape($key)}=&thaw_unescape($value);
5378: }
5379: return %returnhash;
5380: }
5381:
5382: # ------------------------------------------------------------ tmpdel interface
5383: sub tmpdel {
5384: my ($token,$server)=@_;
5385: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5386: return &reply("tmpdel:$token",$server);
5387: }
5388:
5389: # -------------------------------------------------- portfolio access checking
5390:
5391: sub portfolio_access {
5392: my ($requrl) = @_;
5393: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5394: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5395: if ($result) {
5396: my %setters;
5397: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5398: my ($startblock,$endblock) =
5399: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5400: if ($startblock && $endblock) {
5401: return 'B';
5402: }
5403: } else {
5404: my ($startblock,$endblock) =
5405: &Apache::loncommon::blockcheck(\%setters,'port');
5406: if ($startblock && $endblock) {
5407: return 'B';
5408: }
5409: }
5410: }
5411: if ($result eq 'ok') {
5412: return 'F';
5413: } elsif ($result =~ /^[^:]+:guest_/) {
5414: return 'A';
5415: }
5416: return '';
5417: }
5418:
5419: sub get_portfolio_access {
5420: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5421:
5422: if (!ref($access_hash)) {
5423: my $current_perms = &get_portfile_permissions($udom,$unum);
5424: my %access_controls = &get_access_controls($current_perms,$group,
5425: $file_name);
5426: $access_hash = $access_controls{$file_name};
5427: }
5428:
5429: my ($public,$guest,@domains,@users,@courses,@groups);
5430: my $now = time;
5431: if (ref($access_hash) eq 'HASH') {
5432: foreach my $key (keys(%{$access_hash})) {
5433: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5434: if ($start > $now) {
5435: next;
5436: }
5437: if ($end && $end<$now) {
5438: next;
5439: }
5440: if ($scope eq 'public') {
5441: $public = $key;
5442: last;
5443: } elsif ($scope eq 'guest') {
5444: $guest = $key;
5445: } elsif ($scope eq 'domains') {
5446: push(@domains,$key);
5447: } elsif ($scope eq 'users') {
5448: push(@users,$key);
5449: } elsif ($scope eq 'course') {
5450: push(@courses,$key);
5451: } elsif ($scope eq 'group') {
5452: push(@groups,$key);
5453: }
5454: }
5455: if ($public) {
5456: return 'ok';
5457: }
5458: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5459: if ($guest) {
5460: return $guest;
5461: }
5462: } else {
5463: if (@domains > 0) {
5464: foreach my $domkey (@domains) {
5465: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5466: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5467: return 'ok';
5468: }
5469: }
5470: }
5471: }
5472: if (@users > 0) {
5473: foreach my $userkey (@users) {
5474: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5475: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5476: if (ref($item) eq 'HASH') {
5477: if (($item->{'uname'} eq $env{'user.name'}) &&
5478: ($item->{'udom'} eq $env{'user.domain'})) {
5479: return 'ok';
5480: }
5481: }
5482: }
5483: }
5484: }
5485: }
5486: my %roleshash;
5487: my @courses_and_groups = @courses;
5488: push(@courses_and_groups,@groups);
5489: if (@courses_and_groups > 0) {
5490: my (%allgroups,%allroles);
5491: my ($start,$end,$role,$sec,$group);
5492: foreach my $envkey (%env) {
5493: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5494: my $cid = $2.'_'.$3;
5495: if ($1 eq 'gr') {
5496: $group = $4;
5497: $allgroups{$cid}{$group} = $env{$envkey};
5498: } else {
5499: if ($4 eq '') {
5500: $sec = 'none';
5501: } else {
5502: $sec = $4;
5503: }
5504: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5505: }
5506: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5507: my $cid = $2.'_'.$3;
5508: if ($4 eq '') {
5509: $sec = 'none';
5510: } else {
5511: $sec = $4;
5512: }
5513: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5514: }
5515: }
5516: if (keys(%allroles) == 0) {
5517: return;
5518: }
5519: foreach my $key (@courses_and_groups) {
5520: my %content = %{$$access_hash{$key}};
5521: my $cnum = $content{'number'};
5522: my $cdom = $content{'domain'};
5523: my $cid = $cdom.'_'.$cnum;
5524: if (!exists($allroles{$cid})) {
5525: next;
5526: }
5527: foreach my $role_id (keys(%{$content{'roles'}})) {
5528: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5529: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5530: my @status = @{$content{'roles'}{$role_id}{'access'}};
5531: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5532: foreach my $role (keys(%{$allroles{$cid}})) {
5533: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5534: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5535: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5536: if (grep/^all$/,@sections) {
5537: return 'ok';
5538: } else {
5539: if (grep/^$sec$/,@sections) {
5540: return 'ok';
5541: }
5542: }
5543: }
5544: }
5545: if (keys(%{$allgroups{$cid}}) == 0) {
5546: if (grep/^none$/,@groups) {
5547: return 'ok';
5548: }
5549: } else {
5550: if (grep/^all$/,@groups) {
5551: return 'ok';
5552: }
5553: foreach my $group (keys(%{$allgroups{$cid}})) {
5554: if (grep/^$group$/,@groups) {
5555: return 'ok';
5556: }
5557: }
5558: }
5559: }
5560: }
5561: }
5562: }
5563: }
5564: if ($guest) {
5565: return $guest;
5566: }
5567: }
5568: }
5569: return;
5570: }
5571:
5572: sub course_group_datechecker {
5573: my ($dates,$now,$status) = @_;
5574: my ($start,$end) = split(/\./,$dates);
5575: if (!$start && !$end) {
5576: return 'ok';
5577: }
5578: if (grep/^active$/,@{$status}) {
5579: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5580: return 'ok';
5581: }
5582: }
5583: if (grep/^previous$/,@{$status}) {
5584: if ($end > $now ) {
5585: return 'ok';
5586: }
5587: }
5588: if (grep/^future$/,@{$status}) {
5589: if ($start > $now) {
5590: return 'ok';
5591: }
5592: }
5593: return;
5594: }
5595:
5596: sub parse_portfolio_url {
5597: my ($url) = @_;
5598:
5599: my ($type,$udom,$unum,$group,$file_name);
5600:
5601: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5602: $type = 1;
5603: $udom = $1;
5604: $unum = $2;
5605: $file_name = $3;
5606: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5607: $type = 2;
5608: $udom = $1;
5609: $unum = $2;
5610: $group = $3;
5611: $file_name = $3.'/'.$4;
5612: }
5613: if (wantarray) {
5614: return ($type,$udom,$unum,$file_name,$group);
5615: }
5616: return $type;
5617: }
5618:
5619: sub is_portfolio_url {
5620: my ($url) = @_;
5621: return scalar(&parse_portfolio_url($url));
5622: }
5623:
5624: sub is_portfolio_file {
5625: my ($file) = @_;
5626: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5627: return 1;
5628: }
5629: return;
5630: }
5631:
5632: sub usertools_access {
5633: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5634: my ($access,%tools);
5635: if ($context eq '') {
5636: $context = 'tools';
5637: }
5638: if ($context eq 'requestcourses') {
5639: %tools = (
5640: official => 1,
5641: unofficial => 1,
5642: community => 1,
5643: );
5644: } else {
5645: %tools = (
5646: aboutme => 1,
5647: blog => 1,
5648: portfolio => 1,
5649: );
5650: }
5651: return if (!defined($tools{$tool}));
5652:
5653: if ((!defined($udom)) || (!defined($uname))) {
5654: $udom = $env{'user.domain'};
5655: $uname = $env{'user.name'};
5656: }
5657:
5658: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5659: if ($action ne 'reload') {
5660: if ($context eq 'requestcourses') {
5661: return $env{'environment.canrequest.'.$tool};
5662: } else {
5663: return $env{'environment.availabletools.'.$tool};
5664: }
5665: }
5666: }
5667:
5668: my ($toolstatus,$inststatus);
5669:
5670: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5671: ($action ne 'reload')) {
5672: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5673: $inststatus = $env{'environment.inststatus'};
5674: } else {
5675: if (ref($userenvref) eq 'HASH') {
5676: $toolstatus = $userenvref->{$context.'.'.$tool};
5677: $inststatus = $userenvref->{'inststatus'};
5678: } else {
5679: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5680: $toolstatus = $userenv{$context.'.'.$tool};
5681: $inststatus = $userenv{'inststatus'};
5682: }
5683: }
5684:
5685: if ($toolstatus ne '') {
5686: if ($toolstatus) {
5687: $access = 1;
5688: } else {
5689: $access = 0;
5690: }
5691: return $access;
5692: }
5693:
5694: my ($is_adv,%domdef);
5695: if (ref($is_advref) eq 'HASH') {
5696: $is_adv = $is_advref->{'is_adv'};
5697: } else {
5698: $is_adv = &is_advanced_user($udom,$uname);
5699: }
5700: if (ref($domdefref) eq 'HASH') {
5701: %domdef = %{$domdefref};
5702: } else {
5703: %domdef = &get_domain_defaults($udom);
5704: }
5705: if (ref($domdef{$tool}) eq 'HASH') {
5706: if ($is_adv) {
5707: if ($domdef{$tool}{'_LC_adv'} ne '') {
5708: if ($domdef{$tool}{'_LC_adv'}) {
5709: $access = 1;
5710: } else {
5711: $access = 0;
5712: }
5713: return $access;
5714: }
5715: }
5716: if ($inststatus ne '') {
5717: my ($hasaccess,$hasnoaccess);
5718: foreach my $affiliation (split(/:/,$inststatus)) {
5719: if ($domdef{$tool}{$affiliation} ne '') {
5720: if ($domdef{$tool}{$affiliation}) {
5721: $hasaccess = 1;
5722: } else {
5723: $hasnoaccess = 1;
5724: }
5725: }
5726: }
5727: if ($hasaccess || $hasnoaccess) {
5728: if ($hasaccess) {
5729: $access = 1;
5730: } elsif ($hasnoaccess) {
5731: $access = 0;
5732: }
5733: return $access;
5734: }
5735: } else {
5736: if ($domdef{$tool}{'default'} ne '') {
5737: if ($domdef{$tool}{'default'}) {
5738: $access = 1;
5739: } elsif ($domdef{$tool}{'default'} == 0) {
5740: $access = 0;
5741: }
5742: return $access;
5743: }
5744: }
5745: } else {
5746: if ($context eq 'tools') {
5747: $access = 1;
5748: } else {
5749: $access = 0;
5750: }
5751: return $access;
5752: }
5753: }
5754:
5755: sub is_course_owner {
5756: my ($cdom,$cnum,$udom,$uname) = @_;
5757: if (($udom eq '') || ($uname eq '')) {
5758: $udom = $env{'user.domain'};
5759: $uname = $env{'user.name'};
5760: }
5761: unless (($udom eq '') || ($uname eq '')) {
5762: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5763: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5764: return 1;
5765: } else {
5766: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5767: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5768: return 1;
5769: }
5770: }
5771: }
5772: }
5773: return;
5774: }
5775:
5776: sub is_advanced_user {
5777: my ($udom,$uname) = @_;
5778: if ($udom ne '' && $uname ne '') {
5779: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5780: if (wantarray) {
5781: return ($env{'user.adv'},$env{'user.author'});
5782: } else {
5783: return $env{'user.adv'};
5784: }
5785: }
5786: }
5787: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5788: my %allroles;
5789: my ($is_adv,$is_author);
5790: foreach my $role (keys(%roleshash)) {
5791: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5792: my $area = '/'.$tdomain.'/'.$trest;
5793: if ($sec ne '') {
5794: $area .= '/'.$sec;
5795: }
5796: if (($area ne '') && ($trole ne '')) {
5797: my $spec=$trole.'.'.$area;
5798: if ($trole =~ /^cr\//) {
5799: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5800: } elsif ($trole ne 'gr') {
5801: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5802: }
5803: if ($trole eq 'au') {
5804: $is_author = 1;
5805: }
5806: }
5807: }
5808: foreach my $role (keys(%allroles)) {
5809: last if ($is_adv);
5810: foreach my $item (split(/:/,$allroles{$role})) {
5811: if ($item ne '') {
5812: my ($privilege,$restrictions)=split(/&/,$item);
5813: if ($privilege eq 'adv') {
5814: $is_adv = 1;
5815: last;
5816: }
5817: }
5818: }
5819: }
5820: if (wantarray) {
5821: return ($is_adv,$is_author);
5822: }
5823: return $is_adv;
5824: }
5825:
5826: sub check_can_request {
5827: my ($dom,$can_request,$request_domains) = @_;
5828: my $canreq = 0;
5829: my ($types,$typename) = &Apache::loncommon::course_types();
5830: my @options = ('approval','validate','autolimit');
5831: my $optregex = join('|',@options);
5832: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5833: foreach my $type (@{$types}) {
5834: if (&usertools_access($env{'user.name'},
5835: $env{'user.domain'},
5836: $type,undef,'requestcourses')) {
5837: $canreq ++;
5838: if (ref($request_domains) eq 'HASH') {
5839: push(@{$request_domains->{$type}},$env{'user.domain'});
5840: }
5841: if ($dom eq $env{'user.domain'}) {
5842: $can_request->{$type} = 1;
5843: }
5844: }
5845: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5846: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5847: if (@curr > 0) {
5848: foreach my $item (@curr) {
5849: if (ref($request_domains) eq 'HASH') {
5850: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5851: if ($otherdom ne '') {
5852: if (ref($request_domains->{$type}) eq 'ARRAY') {
5853: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5854: push(@{$request_domains->{$type}},$otherdom);
5855: }
5856: } else {
5857: push(@{$request_domains->{$type}},$otherdom);
5858: }
5859: }
5860: }
5861: }
5862: unless($dom eq $env{'user.domain'}) {
5863: $canreq ++;
5864: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5865: $can_request->{$type} = 1;
5866: }
5867: }
5868: }
5869: }
5870: }
5871: }
5872: return $canreq;
5873: }
5874:
5875: # ---------------------------------------------- Custom access rule evaluation
5876:
5877: sub customaccess {
5878: my ($priv,$uri)=@_;
5879: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5880: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5881: $udom = &LONCAPA::clean_domain($udom);
5882: $ucrs = &LONCAPA::clean_username($ucrs);
5883: my $access=0;
5884: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5885: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5886: if ($type eq 'user') {
5887: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5888: my ($tdom,$tuname)=split(m{/},$scope);
5889: if ($tdom) {
5890: if ($tdom ne $env{'user.domain'}) { next; }
5891: }
5892: if ($tuname) {
5893: if ($tuname ne $env{'user.name'}) { next; }
5894: }
5895: $access=($effect eq 'allow');
5896: last;
5897: }
5898: } else {
5899: if ($role) {
5900: if ($role ne $urole) { next; }
5901: }
5902: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5903: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5904: if ($tdom) {
5905: if ($tdom ne $udom) { next; }
5906: }
5907: if ($tcrs) {
5908: if ($tcrs ne $ucrs) { next; }
5909: }
5910: if ($tsec) {
5911: if ($tsec ne $usec) { next; }
5912: }
5913: $access=($effect eq 'allow');
5914: last;
5915: }
5916: if ($realm eq '' && $role eq '') {
5917: $access=($effect eq 'allow');
5918: }
5919: }
5920: }
5921: return $access;
5922: }
5923:
5924: # ------------------------------------------------- Check for a user privilege
5925:
5926: sub allowed {
5927: my ($priv,$uri,$symb,$role)=@_;
5928: my $ver_orguri=$uri;
5929: $uri=&deversion($uri);
5930: my $orguri=$uri;
5931: $uri=&declutter($uri);
5932:
5933: if ($priv eq 'evb') {
5934: # Evade communication block restrictions for specified role in a course
5935: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5936: return $1;
5937: } else {
5938: return;
5939: }
5940: }
5941:
5942: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5943: # Free bre access to adm and meta resources
5944: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5945: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5946: && ($priv eq 'bre')) {
5947: return 'F';
5948: }
5949:
5950: # Free bre access to user's own portfolio contents
5951: my ($space,$domain,$name,@dir)=split('/',$uri);
5952: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5953: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5954: my %setters;
5955: my ($startblock,$endblock) =
5956: &Apache::loncommon::blockcheck(\%setters,'port');
5957: if ($startblock && $endblock) {
5958: return 'B';
5959: } else {
5960: return 'F';
5961: }
5962: }
5963:
5964: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5965: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5966: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5967: if (exists($env{'request.course.id'})) {
5968: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5969: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5970: if (($domain eq $cdom) && ($name eq $cnum)) {
5971: my $courseprivid=$env{'request.course.id'};
5972: $courseprivid=~s/\_/\//;
5973: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5974: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5975: return $1;
5976: } else {
5977: if ($env{'request.course.sec'}) {
5978: $courseprivid.='/'.$env{'request.course.sec'};
5979: }
5980: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5981: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5982: return $2;
5983: }
5984: }
5985: }
5986: }
5987: }
5988:
5989: # Free bre to public access
5990:
5991: if ($priv eq 'bre') {
5992: my $copyright=&metadata($uri,'copyright');
5993: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5994: return 'F';
5995: }
5996: if ($copyright eq 'priv') {
5997: $uri=~/([^\/]+)\/([^\/]+)\//;
5998: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5999: return '';
6000: }
6001: }
6002: if ($copyright eq 'domain') {
6003: $uri=~/([^\/]+)\/([^\/]+)\//;
6004: unless (($env{'user.domain'} eq $1) ||
6005: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6006: return '';
6007: }
6008: }
6009: if ($env{'request.role'}=~ /li\.\//) {
6010: # Library role, so allow browsing of resources in this domain.
6011: return 'F';
6012: }
6013: if ($copyright eq 'custom') {
6014: unless (&customaccess($priv,$uri)) { return ''; }
6015: }
6016: }
6017: # Domain coordinator is trying to create a course
6018: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6019: # uri is the requested domain in this case.
6020: # comparison to 'request.role.domain' shows if the user has selected
6021: # a role of dc for the domain in question.
6022: return 'F' if ($uri eq $env{'request.role.domain'});
6023: }
6024:
6025: my $thisallowed='';
6026: my $statecond=0;
6027: my $courseprivid='';
6028:
6029: my $ownaccess;
6030: # Community Coordinator or Assistant Co-author browsing resource space.
6031: if (($priv eq 'bro') && ($env{'user.author'})) {
6032: if ($uri eq '') {
6033: $ownaccess = 1;
6034: } else {
6035: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6036: my $udom = $env{'user.domain'};
6037: my $uname = $env{'user.name'};
6038: if ($uri =~ m{^\Q$udom\E/?$}) {
6039: $ownaccess = 1;
6040: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6041: unless ($uri =~ m{\.\./}) {
6042: $ownaccess = 1;
6043: }
6044: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6045: my $now = time;
6046: if ($uri =~ m{^([^/]+)/?$}) {
6047: my $adom = $1;
6048: foreach my $key (keys(%env)) {
6049: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6050: my ($start,$end) = split('.',$env{$key});
6051: if (($now >= $start) && (!$end || $end < $now)) {
6052: $ownaccess = 1;
6053: last;
6054: }
6055: }
6056: }
6057: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6058: my $adom = $1;
6059: my $aname = $2;
6060: foreach my $role ('ca','aa') {
6061: if ($env{"user.role.$role./$adom/$aname"}) {
6062: my ($start,$end) =
6063: split('.',$env{"user.role.$role./$adom/$aname"});
6064: if (($now >= $start) && (!$end || $end < $now)) {
6065: $ownaccess = 1;
6066: last;
6067: }
6068: }
6069: }
6070: }
6071: }
6072: }
6073: }
6074: }
6075:
6076: # Course
6077:
6078: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6079: unless (($priv eq 'bro') && (!$ownaccess)) {
6080: $thisallowed.=$1;
6081: }
6082: }
6083:
6084: # Domain
6085:
6086: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6087: =~/\Q$priv\E\&([^\:]*)/) {
6088: unless (($priv eq 'bro') && (!$ownaccess)) {
6089: $thisallowed.=$1;
6090: }
6091: }
6092:
6093: # User who is not author or co-author might still be able to edit
6094: # resource of an author in the domain (e.g., if Domain Coordinator).
6095: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6096: (&allowed('mdc',$env{'request.course.id'}))) {
6097: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6098: $thisallowed.=$1;
6099: }
6100: }
6101:
6102: # Course: uri itself is a course
6103: my $courseuri=$uri;
6104: $courseuri=~s/\_(\d)/\/$1/;
6105: $courseuri=~s/^([^\/])/\/$1/;
6106:
6107: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6108: =~/\Q$priv\E\&([^\:]*)/) {
6109: unless (($priv eq 'bro') && (!$ownaccess)) {
6110: $thisallowed.=$1;
6111: }
6112: }
6113:
6114: # URI is an uploaded document for this course, default permissions don't matter
6115: # not allowing 'edit' access (editupload) to uploaded course docs
6116: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6117: $thisallowed='';
6118: my ($match)=&is_on_map($uri);
6119: if ($match) {
6120: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6121: =~/\Q$priv\E\&([^\:]*)/) {
6122: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6123: if (@blockers > 0) {
6124: $thisallowed = 'B';
6125: } else {
6126: $thisallowed.=$1;
6127: }
6128: }
6129: } else {
6130: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6131: if ($refuri) {
6132: if ($refuri =~ m|^/adm/|) {
6133: $thisallowed='F';
6134: } else {
6135: $refuri=&declutter($refuri);
6136: my ($match) = &is_on_map($refuri);
6137: if ($match) {
6138: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6139: if (@blockers > 0) {
6140: $thisallowed = 'B';
6141: } else {
6142: $thisallowed='F';
6143: }
6144: }
6145: }
6146: }
6147: }
6148: }
6149:
6150: if ($priv eq 'bre'
6151: && $thisallowed ne 'F'
6152: && $thisallowed ne '2'
6153: && &is_portfolio_url($uri)) {
6154: $thisallowed = &portfolio_access($uri);
6155: }
6156:
6157: # Full access at system, domain or course-wide level? Exit.
6158: if ($thisallowed=~/F/) {
6159: return 'F';
6160: }
6161:
6162: # If this is generating or modifying users, exit with special codes
6163:
6164: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6165: if (($priv eq 'cca') || ($priv eq 'caa')) {
6166: my ($audom,$auname)=split('/',$uri);
6167: # no author name given, so this just checks on the general right to make a co-author in this domain
6168: unless ($auname) { return $thisallowed; }
6169: # an author name is given, so we are about to actually make a co-author for a certain account
6170: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6171: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6172: ($audom ne $env{'request.role.domain'}))) { return ''; }
6173: }
6174: return $thisallowed;
6175: }
6176: #
6177: # Gathered so far: system, domain and course wide privileges
6178: #
6179: # Course: See if uri or referer is an individual resource that is part of
6180: # the course
6181:
6182: if ($env{'request.course.id'}) {
6183:
6184: $courseprivid=$env{'request.course.id'};
6185: if ($env{'request.course.sec'}) {
6186: $courseprivid.='/'.$env{'request.course.sec'};
6187: }
6188: $courseprivid=~s/\_/\//;
6189: my $checkreferer=1;
6190: my ($match,$cond)=&is_on_map($uri);
6191: if ($match) {
6192: $statecond=$cond;
6193: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6194: =~/\Q$priv\E\&([^\:]*)/) {
6195: my $value = $1;
6196: if ($priv eq 'bre') {
6197: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6198: if (@blockers > 0) {
6199: $thisallowed = 'B';
6200: } else {
6201: $thisallowed.=$value;
6202: }
6203: } else {
6204: $thisallowed.=$value;
6205: }
6206: $checkreferer=0;
6207: }
6208: }
6209:
6210: if ($checkreferer) {
6211: my $refuri=$env{'httpref.'.$orguri};
6212: unless ($refuri) {
6213: foreach my $key (keys(%env)) {
6214: if ($key=~/^httpref\..*\*/) {
6215: my $pattern=$key;
6216: $pattern=~s/^httpref\.\/res\///;
6217: $pattern=~s/\*/\[\^\/\]\+/g;
6218: $pattern=~s/\//\\\//g;
6219: if ($orguri=~/$pattern/) {
6220: $refuri=$env{$key};
6221: }
6222: }
6223: }
6224: }
6225:
6226: if ($refuri) {
6227: $refuri=&declutter($refuri);
6228: my ($match,$cond)=&is_on_map($refuri);
6229: if ($match) {
6230: my $refstatecond=$cond;
6231: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6232: =~/\Q$priv\E\&([^\:]*)/) {
6233: my $value = $1;
6234: if ($priv eq 'bre') {
6235: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6236: if (@blockers > 0) {
6237: $thisallowed = 'B';
6238: } else {
6239: $thisallowed.=$value;
6240: }
6241: } else {
6242: $thisallowed.=$value;
6243: }
6244: $uri=$refuri;
6245: $statecond=$refstatecond;
6246: }
6247: }
6248: }
6249: }
6250: }
6251:
6252: #
6253: # Gathered now: all privileges that could apply, and condition number
6254: #
6255: #
6256: # Full or no access?
6257: #
6258:
6259: if ($thisallowed=~/F/) {
6260: return 'F';
6261: }
6262:
6263: unless ($thisallowed) {
6264: return '';
6265: }
6266:
6267: # Restrictions exist, deal with them
6268: #
6269: # C:according to course preferences
6270: # R:according to resource settings
6271: # L:unless locked
6272: # X:according to user session state
6273: #
6274:
6275: # Possibly locked functionality, check all courses
6276: # Locks might take effect only after 10 minutes cache expiration for other
6277: # courses, and 2 minutes for current course
6278:
6279: my $envkey;
6280: if ($thisallowed=~/L/) {
6281: foreach $envkey (keys(%env)) {
6282: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6283: my $courseid=$2;
6284: my $roleid=$1.'.'.$2;
6285: $courseid=~s/^\///;
6286: my $expiretime=600;
6287: if ($env{'request.role'} eq $roleid) {
6288: $expiretime=120;
6289: }
6290: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6291: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6292: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6293: &coursedescription($courseid,{'freshen_cache' => 1});
6294: }
6295: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6296: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6297: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6298: &log($env{'user.domain'},$env{'user.name'},
6299: $env{'user.home'},
6300: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6301: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6302: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6303: return '';
6304: }
6305: }
6306: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6307: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6308: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6309: &log($env{'user.domain'},$env{'user.name'},
6310: $env{'user.home'},
6311: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6312: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6313: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6314: return '';
6315: }
6316: }
6317: }
6318: }
6319: }
6320:
6321: #
6322: # Rest of the restrictions depend on selected course
6323: #
6324:
6325: unless ($env{'request.course.id'}) {
6326: if ($thisallowed eq 'A') {
6327: return 'A';
6328: } elsif ($thisallowed eq 'B') {
6329: return 'B';
6330: } else {
6331: return '1';
6332: }
6333: }
6334:
6335: #
6336: # Now user is definitely in a course
6337: #
6338:
6339:
6340: # Course preferences
6341:
6342: if ($thisallowed=~/C/) {
6343: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6344: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6345: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6346: =~/\Q$rolecode\E/) {
6347: if (($priv ne 'pch') && ($priv ne 'plc')) {
6348: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6349: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6350: $env{'request.course.id'});
6351: }
6352: return '';
6353: }
6354:
6355: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6356: =~/\Q$unamedom\E/) {
6357: if (($priv ne 'pch') && ($priv ne 'plc')) {
6358: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6359: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6360: $env{'request.course.id'});
6361: }
6362: return '';
6363: }
6364: }
6365:
6366: # Resource preferences
6367:
6368: if ($thisallowed=~/R/) {
6369: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6370: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6371: if (($priv ne 'pch') && ($priv ne 'plc')) {
6372: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6373: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6374: }
6375: return '';
6376: }
6377: }
6378:
6379: # Restricted by state or randomout?
6380:
6381: if ($thisallowed=~/X/) {
6382: if ($env{'acc.randomout'}) {
6383: if (!$symb) { $symb=&symbread($uri,1); }
6384: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6385: return '';
6386: }
6387: }
6388: if (&condval($statecond)) {
6389: return '2';
6390: } else {
6391: return '';
6392: }
6393: }
6394:
6395: if ($thisallowed eq 'A') {
6396: return 'A';
6397: } elsif ($thisallowed eq 'B') {
6398: return 'B';
6399: }
6400: return 'F';
6401: }
6402:
6403: sub get_comm_blocks {
6404: my ($cdom,$cnum) = @_;
6405: if ($cdom eq '' || $cnum eq '') {
6406: return unless ($env{'request.course.id'});
6407: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6408: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6409: }
6410: my %commblocks;
6411: my $hashid=$cdom.'_'.$cnum;
6412: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6413: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6414: %commblocks = %{$blocksref};
6415: } else {
6416: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6417: my $cachetime = 600;
6418: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6419: }
6420: return %commblocks;
6421: }
6422:
6423: sub has_comm_blocking {
6424: my ($priv,$symb,$uri,$blocks) = @_;
6425: return unless ($env{'request.course.id'});
6426: return unless ($priv eq 'bre');
6427: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6428: my %commblocks;
6429: if (ref($blocks) eq 'HASH') {
6430: %commblocks = %{$blocks};
6431: } else {
6432: %commblocks = &get_comm_blocks();
6433: }
6434: return unless (keys(%commblocks) > 0);
6435: if (!$symb) { $symb=&symbread($uri,1); }
6436: my ($map,$resid,undef)=&decode_symb($symb);
6437: my %tocheck = (
6438: maps => $map,
6439: resources => $symb,
6440: );
6441: my @blockers;
6442: my $now = time;
6443: my $navmap = Apache::lonnavmaps::navmap->new();
6444: foreach my $block (keys(%commblocks)) {
6445: if ($block =~ /^(\d+)____(\d+)$/) {
6446: my ($start,$end) = ($1,$2);
6447: if ($start <= $now && $end >= $now) {
6448: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6449: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6450: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6451: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6452: unless (grep(/^\Q$block\E$/,@blockers)) {
6453: push(@blockers,$block);
6454: }
6455: }
6456: }
6457: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6458: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6459: unless (grep(/^\Q$block\E$/,@blockers)) {
6460: push(@blockers,$block);
6461: }
6462: }
6463: }
6464: }
6465: }
6466: }
6467: } elsif ($block =~ /^firstaccess____(.+)$/) {
6468: my $item = $1;
6469: my @to_test;
6470: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6471: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6472: my $check_interval;
6473: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6474: my @interval;
6475: my $type = 'map';
6476: if ($item eq 'course') {
6477: $type = 'course';
6478: @interval=&EXT("resource.0.interval");
6479: } else {
6480: if ($item =~ /___\d+___/) {
6481: $type = 'resource';
6482: @interval=&EXT("resource.0.interval",$item);
6483: if (ref($navmap)) {
6484: my $res = $navmap->getBySymb($item);
6485: push(@to_test,$res);
6486: }
6487: } else {
6488: my $mapsymb = &symbread($item,1);
6489: if ($mapsymb) {
6490: if (ref($navmap)) {
6491: my $mapres = $navmap->getBySymb($mapsymb);
6492: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6493: foreach my $res (@to_test) {
6494: my $symb = $res->symb();
6495: next if ($symb eq $mapsymb);
6496: if ($symb ne '') {
6497: @interval=&EXT("resource.0.interval",$symb);
6498: last;
6499: }
6500: }
6501: }
6502: }
6503: }
6504: }
6505: if ($interval[0] =~ /\d+/) {
6506: my $first_access;
6507: if ($type eq 'resource') {
6508: $first_access=&get_first_access($interval[1],$item);
6509: } elsif ($type eq 'map') {
6510: $first_access=&get_first_access($interval[1],undef,$item);
6511: } else {
6512: $first_access=&get_first_access($interval[1]);
6513: }
6514: if ($first_access) {
6515: my $timesup = $first_access+$interval[0];
6516: if ($timesup > $now) {
6517: foreach my $res (@to_test) {
6518: if ($res->is_problem()) {
6519: if ($res->completable()) {
6520: unless (grep(/^\Q$block\E$/,@blockers)) {
6521: push(@blockers,$block);
6522: }
6523: last;
6524: }
6525: }
6526: }
6527: }
6528: }
6529: }
6530: }
6531: }
6532: }
6533: }
6534: }
6535: return @blockers;
6536: }
6537:
6538: sub check_docs_block {
6539: my ($docsblock,$tocheck) =@_;
6540: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6541: return;
6542: }
6543: if (ref($docsblock->{'maps'}) eq 'HASH') {
6544: if ($tocheck->{'maps'}) {
6545: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6546: return 1;
6547: }
6548: }
6549: }
6550: if (ref($docsblock->{'resources'}) eq 'HASH') {
6551: if ($tocheck->{'resources'}) {
6552: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6553: return 1;
6554: }
6555: }
6556: }
6557: return;
6558: }
6559:
6560: #
6561: # Removes the versino from a URI and
6562: # splits it in to its filename and path to the filename.
6563: # Seems like File::Basename could have done this more clearly.
6564: # Parameters:
6565: # $uri - input URI
6566: # Returns:
6567: # Two element list consisting of
6568: # $pathname - the URI up to and excluding the trailing /
6569: # $filename - The part of the URI following the last /
6570: # NOTE:
6571: # Another realization of this is simply:
6572: # use File::Basename;
6573: # ...
6574: # $uri = shift;
6575: # $filename = basename($uri);
6576: # $path = dirname($uri);
6577: # return ($filename, $path);
6578: #
6579: # The implementation below is probably faster however.
6580: #
6581: sub split_uri_for_cond {
6582: my $uri=&deversion(&declutter(shift));
6583: my @uriparts=split(/\//,$uri);
6584: my $filename=pop(@uriparts);
6585: my $pathname=join('/',@uriparts);
6586: return ($pathname,$filename);
6587: }
6588: # --------------------------------------------------- Is a resource on the map?
6589:
6590: sub is_on_map {
6591: my ($pathname,$filename) = &split_uri_for_cond(shift);
6592: #Trying to find the conditional for the file
6593: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6594: /\&\Q$filename\E\:([\d\|]+)\&/);
6595: if ($match) {
6596: return (1,$1);
6597: } else {
6598: return (0,0);
6599: }
6600: }
6601:
6602: # --------------------------------------------------------- Get symb from alias
6603:
6604: sub get_symb_from_alias {
6605: my $symb=shift;
6606: my ($map,$resid,$url)=&decode_symb($symb);
6607: # Already is a symb
6608: if ($url) { return $symb; }
6609: # Must be an alias
6610: my $aliassymb='';
6611: my %bighash;
6612: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6613: &GDBM_READER(),0640)) {
6614: my $rid=$bighash{'mapalias_'.$symb};
6615: if ($rid) {
6616: my ($mapid,$resid)=split(/\./,$rid);
6617: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6618: $resid,$bighash{'src_'.$rid});
6619: }
6620: untie %bighash;
6621: }
6622: return $aliassymb;
6623: }
6624:
6625: # ----------------------------------------------------------------- Define Role
6626:
6627: sub definerole {
6628: if (allowed('mcr','/')) {
6629: my ($rolename,$sysrole,$domrole,$courole)=@_;
6630: foreach my $role (split(':',$sysrole)) {
6631: my ($crole,$cqual)=split(/\&/,$role);
6632: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6633: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6634: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6635: return "refused:s:$crole&$cqual";
6636: }
6637: }
6638: }
6639: foreach my $role (split(':',$domrole)) {
6640: my ($crole,$cqual)=split(/\&/,$role);
6641: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6642: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6643: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6644: return "refused:d:$crole&$cqual";
6645: }
6646: }
6647: }
6648: foreach my $role (split(':',$courole)) {
6649: my ($crole,$cqual)=split(/\&/,$role);
6650: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6651: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6652: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6653: return "refused:c:$crole&$cqual";
6654: }
6655: }
6656: }
6657: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6658: "$env{'user.domain'}:$env{'user.name'}:".
6659: "rolesdef_$rolename=".
6660: escape($sysrole.'_'.$domrole.'_'.$courole);
6661: return reply($command,$env{'user.home'});
6662: } else {
6663: return 'refused';
6664: }
6665: }
6666:
6667: # ---------------- Make a metadata query against the network of library servers
6668:
6669: sub metadata_query {
6670: my ($query,$custom,$customshow,$server_array)=@_;
6671: my %rhash;
6672: my %libserv = &all_library();
6673: my @server_list = (defined($server_array) ? @$server_array
6674: : keys(%libserv) );
6675: for my $server (@server_list) {
6676: unless ($custom or $customshow) {
6677: my $reply=&reply("querysend:".&escape($query),$server);
6678: $rhash{$server}=$reply;
6679: }
6680: else {
6681: my $reply=&reply("querysend:".&escape($query).':'.
6682: &escape($custom).':'.&escape($customshow),
6683: $server);
6684: $rhash{$server}=$reply;
6685: }
6686: }
6687: return \%rhash;
6688: }
6689:
6690: # ----------------------------------------- Send log queries and wait for reply
6691:
6692: sub log_query {
6693: my ($uname,$udom,$query,%filters)=@_;
6694: my $uhome=&homeserver($uname,$udom);
6695: if ($uhome eq 'no_host') { return 'error: no_host'; }
6696: my $uhost=&hostname($uhome);
6697: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6698: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6699: $uhome);
6700: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6701: return get_query_reply($queryid);
6702: }
6703:
6704: # -------------------------- Update MySQL table for portfolio file
6705:
6706: sub update_portfolio_table {
6707: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6708: if ($group ne '') {
6709: $file_name =~s /^\Q$group\E//;
6710: }
6711: my $homeserver = &homeserver($uname,$udom);
6712: my $queryid=
6713: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6714: ':'.&escape($file_name).':'.$action,$homeserver);
6715: my $reply = &get_query_reply($queryid);
6716: return $reply;
6717: }
6718:
6719: # -------------------------- Update MySQL allusers table
6720:
6721: sub update_allusers_table {
6722: my ($uname,$udom,$names) = @_;
6723: my $homeserver = &homeserver($uname,$udom);
6724: my $queryid=
6725: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6726: 'lastname='.&escape($names->{'lastname'}).'%%'.
6727: 'firstname='.&escape($names->{'firstname'}).'%%'.
6728: 'middlename='.&escape($names->{'middlename'}).'%%'.
6729: 'generation='.&escape($names->{'generation'}).'%%'.
6730: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6731: 'id='.&escape($names->{'id'}),$homeserver);
6732: return;
6733: }
6734:
6735: # ------- Request retrieval of institutional classlists for course(s)
6736:
6737: sub fetch_enrollment_query {
6738: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6739: my $homeserver;
6740: my $maxtries = 1;
6741: if ($context eq 'automated') {
6742: $homeserver = $perlvar{'lonHostID'};
6743: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6744: } else {
6745: $homeserver = &homeserver($cnum,$dom);
6746: }
6747: my $host=&hostname($homeserver);
6748: my $cmd = '';
6749: foreach my $affiliate (keys(%{$affiliatesref})) {
6750: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6751: }
6752: $cmd =~ s/%%$//;
6753: $cmd = &escape($cmd);
6754: my $query = 'fetchenrollment';
6755: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6756: unless ($queryid=~/^\Q$host\E\_/) {
6757: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6758: return 'error: '.$queryid;
6759: }
6760: my $reply = &get_query_reply($queryid);
6761: my $tries = 1;
6762: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6763: $reply = &get_query_reply($queryid);
6764: $tries ++;
6765: }
6766: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6767: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6768: } else {
6769: my @responses = split(/:/,$reply);
6770: if ($homeserver eq $perlvar{'lonHostID'}) {
6771: foreach my $line (@responses) {
6772: my ($key,$value) = split(/=/,$line,2);
6773: $$replyref{$key} = $value;
6774: }
6775: } else {
6776: my $pathname = LONCAPA::tempdir();
6777: foreach my $line (@responses) {
6778: my ($key,$value) = split(/=/,$line);
6779: $$replyref{$key} = $value;
6780: if ($value > 0) {
6781: foreach my $item (@{$$affiliatesref{$key}}) {
6782: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6783: my $destname = $pathname.'/'.$filename;
6784: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6785: if ($xml_classlist =~ /^error/) {
6786: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6787: } else {
6788: if ( open(FILE,">$destname") ) {
6789: print FILE &unescape($xml_classlist);
6790: close(FILE);
6791: } else {
6792: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6793: }
6794: }
6795: }
6796: }
6797: }
6798: }
6799: return 'ok';
6800: }
6801: return 'error';
6802: }
6803:
6804: sub get_query_reply {
6805: my $queryid=shift;
6806: my $replyfile=LONCAPA::tempdir().$queryid;
6807: my $reply='';
6808: for (1..100) {
6809: sleep 2;
6810: if (-e $replyfile.'.end') {
6811: if (open(my $fh,$replyfile)) {
6812: $reply = join('',<$fh>);
6813: close($fh);
6814: } else { return 'error: reply_file_error'; }
6815: return &unescape($reply);
6816: }
6817: }
6818: return 'timeout:'.$queryid;
6819: }
6820:
6821: sub courselog_query {
6822: #
6823: # possible filters:
6824: # url: url or symb
6825: # username
6826: # domain
6827: # action: view, submit, grade
6828: # start: timestamp
6829: # end: timestamp
6830: #
6831: my (%filters)=@_;
6832: unless ($env{'request.course.id'}) { return 'no_course'; }
6833: if ($filters{'url'}) {
6834: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6835: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6836: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6837: }
6838: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6839: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6840: return &log_query($cname,$cdom,'courselog',%filters);
6841: }
6842:
6843: sub userlog_query {
6844: #
6845: # possible filters:
6846: # action: log check role
6847: # start: timestamp
6848: # end: timestamp
6849: #
6850: my ($uname,$udom,%filters)=@_;
6851: return &log_query($uname,$udom,'userlog',%filters);
6852: }
6853:
6854: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6855:
6856: sub auto_run {
6857: my ($cnum,$cdom) = @_;
6858: my $response = 0;
6859: my $settings;
6860: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6861: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6862: $settings = $domconfig{'autoenroll'};
6863: if ($settings->{'run'} eq '1') {
6864: $response = 1;
6865: }
6866: } else {
6867: my $homeserver;
6868: if (&is_course($cdom,$cnum)) {
6869: $homeserver = &homeserver($cnum,$cdom);
6870: } else {
6871: $homeserver = &domain($cdom,'primary');
6872: }
6873: if ($homeserver ne 'no_host') {
6874: $response = &reply('autorun:'.$cdom,$homeserver);
6875: }
6876: }
6877: return $response;
6878: }
6879:
6880: sub auto_get_sections {
6881: my ($cnum,$cdom,$inst_coursecode) = @_;
6882: my $homeserver;
6883: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6884: $homeserver = &homeserver($cnum,$cdom);
6885: }
6886: if (!defined($homeserver)) {
6887: if ($cdom =~ /^$match_domain$/) {
6888: $homeserver = &domain($cdom,'primary');
6889: }
6890: }
6891: my @secs;
6892: if (defined($homeserver)) {
6893: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6894: unless ($response eq 'refused') {
6895: @secs = split(/:/,$response);
6896: }
6897: }
6898: return @secs;
6899: }
6900:
6901: sub auto_new_course {
6902: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6903: my $homeserver = &homeserver($cnum,$cdom);
6904: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6905: return $response;
6906: }
6907:
6908: sub auto_validate_courseID {
6909: my ($cnum,$cdom,$inst_course_id) = @_;
6910: my $homeserver = &homeserver($cnum,$cdom);
6911: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6912: return $response;
6913: }
6914:
6915: sub auto_validate_instcode {
6916: my ($cnum,$cdom,$instcode,$owner) = @_;
6917: my ($homeserver,$response);
6918: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6919: $homeserver = &homeserver($cnum,$cdom);
6920: }
6921: if (!defined($homeserver)) {
6922: if ($cdom =~ /^$match_domain$/) {
6923: $homeserver = &domain($cdom,'primary');
6924: }
6925: }
6926: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6927: &escape($instcode).':'.&escape($owner),$homeserver));
6928: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6929: return ($outcome,$description);
6930: }
6931:
6932: sub auto_create_password {
6933: my ($cnum,$cdom,$authparam,$udom) = @_;
6934: my ($homeserver,$response);
6935: my $create_passwd = 0;
6936: my $authchk = '';
6937: if ($udom =~ /^$match_domain$/) {
6938: $homeserver = &domain($udom,'primary');
6939: }
6940: if ($homeserver eq '') {
6941: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6942: $homeserver = &homeserver($cnum,$cdom);
6943: }
6944: }
6945: if ($homeserver eq '') {
6946: $authchk = 'nodomain';
6947: } else {
6948: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6949: if ($response eq 'refused') {
6950: $authchk = 'refused';
6951: } else {
6952: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6953: }
6954: }
6955: return ($authparam,$create_passwd,$authchk);
6956: }
6957:
6958: sub auto_photo_permission {
6959: my ($cnum,$cdom,$students) = @_;
6960: my $homeserver = &homeserver($cnum,$cdom);
6961: my ($outcome,$perm_reqd,$conditions) =
6962: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6963: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6964: return (undef,undef);
6965: }
6966: return ($outcome,$perm_reqd,$conditions);
6967: }
6968:
6969: sub auto_checkphotos {
6970: my ($uname,$udom,$pid) = @_;
6971: my $homeserver = &homeserver($uname,$udom);
6972: my ($result,$resulttype);
6973: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6974: &escape($uname).':'.&escape($pid),
6975: $homeserver));
6976: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6977: return (undef,undef);
6978: }
6979: if ($outcome) {
6980: ($result,$resulttype) = split(/:/,$outcome);
6981: }
6982: return ($result,$resulttype);
6983: }
6984:
6985: sub auto_photochoice {
6986: my ($cnum,$cdom) = @_;
6987: my $homeserver = &homeserver($cnum,$cdom);
6988: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6989: &escape($cdom),
6990: $homeserver)));
6991: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6992: return (undef,undef);
6993: }
6994: return ($update,$comment);
6995: }
6996:
6997: sub auto_photoupdate {
6998: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6999: my $homeserver = &homeserver($cnum,$dom);
7000: my $host=&hostname($homeserver);
7001: my $cmd = '';
7002: my $maxtries = 1;
7003: foreach my $affiliate (keys(%{$affiliatesref})) {
7004: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7005: }
7006: $cmd =~ s/%%$//;
7007: $cmd = &escape($cmd);
7008: my $query = 'institutionalphotos';
7009: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7010: unless ($queryid=~/^\Q$host\E\_/) {
7011: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7012: return 'error: '.$queryid;
7013: }
7014: my $reply = &get_query_reply($queryid);
7015: my $tries = 1;
7016: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7017: $reply = &get_query_reply($queryid);
7018: $tries ++;
7019: }
7020: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7021: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7022: } else {
7023: my @responses = split(/:/,$reply);
7024: my $outcome = shift(@responses);
7025: foreach my $item (@responses) {
7026: my ($key,$value) = split(/=/,$item);
7027: $$photo{$key} = $value;
7028: }
7029: return $outcome;
7030: }
7031: return 'error';
7032: }
7033:
7034: sub auto_instcode_format {
7035: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7036: $cat_order) = @_;
7037: my $courses = '';
7038: my @homeservers;
7039: if ($caller eq 'global') {
7040: my %servers = &get_servers($codedom,'library');
7041: foreach my $tryserver (keys(%servers)) {
7042: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7043: push(@homeservers,$tryserver);
7044: }
7045: }
7046: } elsif ($caller eq 'requests') {
7047: if ($codedom =~ /^$match_domain$/) {
7048: my $chome = &domain($codedom,'primary');
7049: unless ($chome eq 'no_host') {
7050: push(@homeservers,$chome);
7051: }
7052: }
7053: } else {
7054: push(@homeservers,&homeserver($caller,$codedom));
7055: }
7056: foreach my $code (keys(%{$instcodes})) {
7057: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7058: }
7059: chop($courses);
7060: my $ok_response = 0;
7061: my $response;
7062: while (@homeservers > 0 && $ok_response == 0) {
7063: my $server = shift(@homeservers);
7064: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7065: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7066: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7067: split(/:/,$response);
7068: %{$codes} = (%{$codes},&str2hash($codes_str));
7069: push(@{$codetitles},&str2array($codetitles_str));
7070: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7071: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7072: $ok_response = 1;
7073: }
7074: }
7075: if ($ok_response) {
7076: return 'ok';
7077: } else {
7078: return $response;
7079: }
7080: }
7081:
7082: sub auto_instcode_defaults {
7083: my ($domain,$returnhash,$code_order) = @_;
7084: my @homeservers;
7085:
7086: my %servers = &get_servers($domain,'library');
7087: foreach my $tryserver (keys(%servers)) {
7088: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7089: push(@homeservers,$tryserver);
7090: }
7091: }
7092:
7093: my $response;
7094: foreach my $server (@homeservers) {
7095: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7096: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7097:
7098: foreach my $pair (split(/\&/,$response)) {
7099: my ($name,$value)=split(/\=/,$pair);
7100: if ($name eq 'code_order') {
7101: @{$code_order} = split(/\&/,&unescape($value));
7102: } else {
7103: $returnhash->{&unescape($name)}=&unescape($value);
7104: }
7105: }
7106: return 'ok';
7107: }
7108:
7109: return $response;
7110: }
7111:
7112: sub auto_possible_instcodes {
7113: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7114: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7115: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7116: return;
7117: }
7118: my (@homeservers,$uhome);
7119: if (defined(&domain($domain,'primary'))) {
7120: $uhome=&domain($domain,'primary');
7121: push(@homeservers,&domain($domain,'primary'));
7122: } else {
7123: my %servers = &get_servers($domain,'library');
7124: foreach my $tryserver (keys(%servers)) {
7125: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7126: push(@homeservers,$tryserver);
7127: }
7128: }
7129: }
7130: my $response;
7131: foreach my $server (@homeservers) {
7132: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7133: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7134: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7135: split(':',$response);
7136: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7137: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7138: foreach my $item (split('&',$cat_title)) {
7139: my ($name,$value)=split('=',$item);
7140: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7141: }
7142: foreach my $item (split('&',$cat_order)) {
7143: my ($name,$value)=split('=',$item);
7144: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7145: }
7146: return 'ok';
7147: }
7148: return $response;
7149: }
7150:
7151: sub auto_courserequest_checks {
7152: my ($dom) = @_;
7153: my ($homeserver,%validations);
7154: if ($dom =~ /^$match_domain$/) {
7155: $homeserver = &domain($dom,'primary');
7156: }
7157: unless ($homeserver eq 'no_host') {
7158: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7159: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7160: my @items = split(/&/,$response);
7161: foreach my $item (@items) {
7162: my ($key,$value) = split('=',$item);
7163: $validations{&unescape($key)} = &thaw_unescape($value);
7164: }
7165: }
7166: }
7167: return %validations;
7168: }
7169:
7170: sub auto_courserequest_validation {
7171: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7172: my ($homeserver,$response);
7173: if ($dom =~ /^$match_domain$/) {
7174: $homeserver = &domain($dom,'primary');
7175: }
7176: unless ($homeserver eq 'no_host') {
7177:
7178: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7179: ':'.&escape($crstype).':'.&escape($inststatuslist).
7180: ':'.&escape($instcode).':'.&escape($instseclist),
7181: $homeserver));
7182: }
7183: return $response;
7184: }
7185:
7186: sub auto_validate_class_sec {
7187: my ($cdom,$cnum,$owners,$inst_class) = @_;
7188: my $homeserver = &homeserver($cnum,$cdom);
7189: my $ownerlist;
7190: if (ref($owners) eq 'ARRAY') {
7191: $ownerlist = join(',',@{$owners});
7192: } else {
7193: $ownerlist = $owners;
7194: }
7195: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7196: &escape($ownerlist).':'.$cdom,$homeserver);
7197: return $response;
7198: }
7199:
7200: # ------------------------------------------------------- Course Group routines
7201:
7202: sub get_coursegroups {
7203: my ($cdom,$cnum,$group,$namespace) = @_;
7204: return(&dump($namespace,$cdom,$cnum,$group));
7205: }
7206:
7207: sub modify_coursegroup {
7208: my ($cdom,$cnum,$groupsettings) = @_;
7209: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7210: }
7211:
7212: sub toggle_coursegroup_status {
7213: my ($cdom,$cnum,$group,$action) = @_;
7214: my ($from_namespace,$to_namespace);
7215: if ($action eq 'delete') {
7216: $from_namespace = 'coursegroups';
7217: $to_namespace = 'deleted_groups';
7218: } else {
7219: $from_namespace = 'deleted_groups';
7220: $to_namespace = 'coursegroups';
7221: }
7222: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7223: if (my $tmp = &error(%curr_group)) {
7224: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7225: return ('read error',$tmp);
7226: } else {
7227: my %savedsettings = %curr_group;
7228: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7229: my $deloutcome;
7230: if ($result eq 'ok') {
7231: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7232: } else {
7233: return ('write error',$result);
7234: }
7235: if ($deloutcome eq 'ok') {
7236: return 'ok';
7237: } else {
7238: return ('delete error',$deloutcome);
7239: }
7240: }
7241: }
7242:
7243: sub modify_group_roles {
7244: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7245: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7246: my $role = 'gr/'.&escape($userprivs);
7247: my ($uname,$udom) = split(/:/,$user);
7248: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7249: if ($result eq 'ok') {
7250: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7251: }
7252: return $result;
7253: }
7254:
7255: sub modify_coursegroup_membership {
7256: my ($cdom,$cnum,$membership) = @_;
7257: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7258: return $result;
7259: }
7260:
7261: sub get_active_groups {
7262: my ($udom,$uname,$cdom,$cnum) = @_;
7263: my $now = time;
7264: my %groups = ();
7265: foreach my $key (keys(%env)) {
7266: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7267: my ($start,$end) = split(/\./,$env{$key});
7268: if (($end!=0) && ($end<$now)) { next; }
7269: if (($start!=0) && ($start>$now)) { next; }
7270: if ($1 eq $cdom && $2 eq $cnum) {
7271: $groups{$3} = $env{$key} ;
7272: }
7273: }
7274: }
7275: return %groups;
7276: }
7277:
7278: sub get_group_membership {
7279: my ($cdom,$cnum,$group) = @_;
7280: return(&dump('groupmembership',$cdom,$cnum,$group));
7281: }
7282:
7283: sub get_users_groups {
7284: my ($udom,$uname,$courseid) = @_;
7285: my @usersgroups;
7286: my $cachetime=1800;
7287:
7288: my $hashid="$udom:$uname:$courseid";
7289: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7290: if (defined($cached)) {
7291: @usersgroups = split(/:/,$grouplist);
7292: } else {
7293: $grouplist = '';
7294: my $courseurl = &courseid_to_courseurl($courseid);
7295: my $extra = &freeze_escape({'skipcheck' => 1});
7296: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
7297: my $access_end = $env{'course.'.$courseid.
7298: '.default_enrollment_end_date'};
7299: my $now = time;
7300: foreach my $key (keys(%roleshash)) {
7301: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7302: my $group = $1;
7303: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7304: my $start = $2;
7305: my $end = $1;
7306: if ($start == -1) { next; } # deleted from group
7307: if (($start!=0) && ($start>$now)) { next; }
7308: if (($end!=0) && ($end<$now)) {
7309: if ($access_end && $access_end < $now) {
7310: if ($access_end - $end < 86400) {
7311: push(@usersgroups,$group);
7312: }
7313: }
7314: next;
7315: }
7316: push(@usersgroups,$group);
7317: }
7318: }
7319: }
7320: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7321: $grouplist = join(':',@usersgroups);
7322: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7323: }
7324: return @usersgroups;
7325: }
7326:
7327: sub devalidate_getgroups_cache {
7328: my ($udom,$uname,$cdom,$cnum)=@_;
7329: my $courseid = $cdom.'_'.$cnum;
7330:
7331: my $hashid="$udom:$uname:$courseid";
7332: &devalidate_cache_new('getgroups',$hashid);
7333: }
7334:
7335: # ------------------------------------------------------------------ Plain Text
7336:
7337: sub plaintext {
7338: my ($short,$type,$cid,$forcedefault) = @_;
7339: if ($short =~ m{^cr/}) {
7340: return (split('/',$short))[-1];
7341: }
7342: if (!defined($cid)) {
7343: $cid = $env{'request.course.id'};
7344: }
7345: my %rolenames = (
7346: Course => 'std',
7347: Community => 'alt1',
7348: );
7349: if ($cid ne '') {
7350: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7351: unless ($forcedefault) {
7352: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7353: &Apache::lonlocal::mt_escape(\$roletext);
7354: return &Apache::lonlocal::mt($roletext);
7355: }
7356: }
7357: }
7358: if ((defined($type)) && (defined($rolenames{$type})) &&
7359: (defined($rolenames{$type})) &&
7360: (defined($prp{$short}{$rolenames{$type}}))) {
7361: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7362: } elsif ($cid ne '') {
7363: my $crstype = $env{'course.'.$cid.'.type'};
7364: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7365: (defined($prp{$short}{$rolenames{$crstype}}))) {
7366: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7367: }
7368: }
7369: return &Apache::lonlocal::mt($prp{$short}{'std'});
7370: }
7371:
7372: # ----------------------------------------------------------------- Assign Role
7373:
7374: sub assignrole {
7375: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7376: $context)=@_;
7377: my $mrole;
7378: if ($role =~ /^cr\//) {
7379: my $cwosec=$url;
7380: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7381: unless (&allowed('ccr',$cwosec)) {
7382: my $refused = 1;
7383: if ($context eq 'requestcourses') {
7384: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7385: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7386: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7387: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7388: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7389: if ($crsenv{'internal.courseowner'} eq
7390: $env{'user.name'}.':'.$env{'user.domain'}) {
7391: $refused = '';
7392: }
7393: }
7394: }
7395: }
7396: }
7397: if ($refused) {
7398: &logthis('Refused custom assignrole: '.
7399: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7400: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7401: return 'refused';
7402: }
7403: }
7404: $mrole='cr';
7405: } elsif ($role =~ /^gr\//) {
7406: my $cwogrp=$url;
7407: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7408: unless (&allowed('mdg',$cwogrp)) {
7409: &logthis('Refused group assignrole: '.
7410: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7411: $env{'user.name'}.' at '.$env{'user.domain'});
7412: return 'refused';
7413: }
7414: $mrole='gr';
7415: } else {
7416: my $cwosec=$url;
7417: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7418: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7419: my $refused;
7420: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7421: if (!(&allowed('c'.$role,$url))) {
7422: $refused = 1;
7423: }
7424: } else {
7425: $refused = 1;
7426: }
7427: if ($refused) {
7428: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7429: if (!$selfenroll && $context eq 'course') {
7430: my %crsenv;
7431: if ($role eq 'cc' || $role eq 'co') {
7432: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7433: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7434: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7435: if ($crsenv{'internal.courseowner'} eq
7436: $env{'user.name'}.':'.$env{'user.domain'}) {
7437: $refused = '';
7438: }
7439: }
7440: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7441: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7442: if ($crsenv{'internal.courseowner'} eq
7443: $env{'user.name'}.':'.$env{'user.domain'}) {
7444: $refused = '';
7445: }
7446: }
7447: }
7448: }
7449: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7450: $refused = '';
7451: } elsif ($context eq 'requestcourses') {
7452: my @possroles = ('st','ta','ep','in','cc','co');
7453: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7454: my $wrongcc;
7455: if ($cnum =~ /^$match_community$/) {
7456: $wrongcc = 1 if ($role eq 'cc');
7457: } else {
7458: $wrongcc = 1 if ($role eq 'co');
7459: }
7460: unless ($wrongcc) {
7461: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7462: if ($crsenv{'internal.courseowner'} eq
7463: $env{'user.name'}.':'.$env{'user.domain'}) {
7464: $refused = '';
7465: }
7466: }
7467: }
7468: }
7469: if ($refused) {
7470: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7471: ' '.$role.' '.$end.' '.$start.' by '.
7472: $env{'user.name'}.' at '.$env{'user.domain'});
7473: return 'refused';
7474: }
7475: }
7476: } elsif ($role eq 'au') {
7477: if ($url ne '/'.$udom.'/') {
7478: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7479: ' to assign author role for '.$uname.':'.$udom.
7480: ' in domain: '.$url.' refused (wrong domain).');
7481: return 'refused';
7482: }
7483: }
7484: $mrole=$role;
7485: }
7486: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7487: "$udom:$uname:$url".'_'."$mrole=$role";
7488: if ($end) { $command.='_'.$end; }
7489: if ($start) {
7490: if ($end) {
7491: $command.='_'.$start;
7492: } else {
7493: $command.='_0_'.$start;
7494: }
7495: }
7496: my $origstart = $start;
7497: my $origend = $end;
7498: my $delflag;
7499: # actually delete
7500: if ($deleteflag) {
7501: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7502: # modify command to delete the role
7503: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7504: "$udom:$uname:$url".'_'."$mrole";
7505: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7506: # set start and finish to negative values for userrolelog
7507: $start=-1;
7508: $end=-1;
7509: $delflag = 1;
7510: }
7511: }
7512: # send command
7513: my $answer=&reply($command,&homeserver($uname,$udom));
7514: # log new user role if status is ok
7515: if ($answer eq 'ok') {
7516: &userrolelog($role,$uname,$udom,$url,$start,$end);
7517: # for course roles, perform group memberships changes triggered by role change.
7518: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
7519: unless ($role =~ /^gr/) {
7520: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7521: $origstart,$selfenroll,$context);
7522: }
7523: if ($role eq 'cc') {
7524: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7525: }
7526: }
7527: return $answer;
7528: }
7529:
7530: sub autoupdate_coowners {
7531: my ($url,$end,$start,$uname,$udom) = @_;
7532: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7533: if (($cdom ne '') && ($cnum ne '')) {
7534: my $now = time;
7535: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7536: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7537: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7538: my $instcode = $coursehash{'internal.coursecode'};
7539: if ($instcode ne '') {
7540: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7541: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7542: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7543: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7544: if ($result eq 'valid') {
7545: if ($coursehash{'internal.co-owners'}) {
7546: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7547: push(@newcoowners,$coowner);
7548: }
7549: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7550: push(@newcoowners,$uname.':'.$udom);
7551: }
7552: @newcoowners = sort(@newcoowners);
7553: } else {
7554: push(@newcoowners,$uname.':'.$udom);
7555: }
7556: } else {
7557: if ($coursehash{'internal.co-owners'}) {
7558: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7559: unless ($coowner eq $uname.':'.$udom) {
7560: push(@newcoowners,$coowner);
7561: }
7562: }
7563: unless (@newcoowners > 0) {
7564: $delcoowners = 1;
7565: $coowners = '';
7566: }
7567: }
7568: }
7569: if (@newcoowners || $delcoowners) {
7570: &store_coowners($cdom,$cnum,$coursehash{'home'},
7571: $delcoowners,@newcoowners);
7572: }
7573: }
7574: }
7575: }
7576: }
7577: }
7578: }
7579:
7580: sub store_coowners {
7581: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
7582: my $cid = $cdom.'_'.$cnum;
7583: my ($coowners,$delresult,$putresult);
7584: if (@newcoowners) {
7585: $coowners = join(',',@newcoowners);
7586: my %coownershash = (
7587: 'internal.co-owners' => $coowners,
7588: );
7589: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
7590: if ($putresult eq 'ok') {
7591: if ($env{'course.'.$cid.'.num'} eq $cnum) {
7592: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
7593: }
7594: }
7595: }
7596: if ($delcoowners) {
7597: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
7598: if ($delresult eq 'ok') {
7599: if ($env{'course.'.$cid.'.internal.co-owners'}) {
7600: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
7601: }
7602: }
7603: }
7604: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
7605: my %crsinfo =
7606: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
7607: if (ref($crsinfo{$cid}) eq 'HASH') {
7608: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
7609: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
7610: }
7611: }
7612: }
7613:
7614: # -------------------------------------------------- Modify user authentication
7615: # Overrides without validation
7616:
7617: sub modifyuserauth {
7618: my ($udom,$uname,$umode,$upass)=@_;
7619: my $uhome=&homeserver($uname,$udom);
7620: unless (&allowed('mau',$udom)) { return 'refused'; }
7621: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
7622: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7623: ' in domain '.$env{'request.role.domain'});
7624: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7625: &escape($upass),$uhome);
7626: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7627: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7628: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7629: &log($udom,,$uname,$uhome,
7630: 'Authentication changed by '.$env{'user.domain'}.', '.
7631: $env{'user.name'}.', '.$umode.
7632: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7633: unless ($reply eq 'ok') {
7634: &logthis('Authentication mode error: '.$reply);
7635: return 'error: '.$reply;
7636: }
7637: return 'ok';
7638: }
7639:
7640: # --------------------------------------------------------------- Modify a user
7641:
7642: sub modifyuser {
7643: my ($udom, $uname, $uid,
7644: $umode, $upass, $first,
7645: $middle, $last, $gene,
7646: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7647: $udom= &LONCAPA::clean_domain($udom);
7648: $uname=&LONCAPA::clean_username($uname);
7649: my $showcandelete = 'none';
7650: if (ref($candelete) eq 'ARRAY') {
7651: if (@{$candelete} > 0) {
7652: $showcandelete = join(', ',@{$candelete});
7653: }
7654: }
7655: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7656: $umode.', '.$first.', '.$middle.', '.
7657: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7658: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7659: ' desiredhome not specified').
7660: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7661: ' in domain '.$env{'request.role.domain'});
7662: my $uhome=&homeserver($uname,$udom,'true');
7663: my $newuser;
7664: if ($uhome eq 'no_host') {
7665: $newuser = 1;
7666: }
7667: # ----------------------------------------------------------------- Create User
7668: if (($uhome eq 'no_host') &&
7669: (($umode && $upass) || ($umode eq 'localauth'))) {
7670: my $unhome='';
7671: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7672: $unhome = $desiredhome;
7673: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7674: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7675: } else { # load balancing routine for determining $unhome
7676: my $loadm=10000000;
7677: my %servers = &get_servers($udom,'library');
7678: foreach my $tryserver (keys(%servers)) {
7679: my $answer=reply('load',$tryserver);
7680: if (($answer=~/\d+/) && ($answer<$loadm)) {
7681: $loadm=$answer;
7682: $unhome=$tryserver;
7683: }
7684: }
7685: }
7686: if (($unhome eq '') || ($unhome eq 'no_host')) {
7687: return 'error: unable to find a home server for '.$uname.
7688: ' in domain '.$udom;
7689: }
7690: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7691: &escape($upass),$unhome);
7692: unless ($reply eq 'ok') {
7693: return 'error: '.$reply;
7694: }
7695: $uhome=&homeserver($uname,$udom,'true');
7696: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7697: return 'error: unable verify users home machine.';
7698: }
7699: } # End of creation of new user
7700: # ---------------------------------------------------------------------- Add ID
7701: if ($uid) {
7702: $uid=~tr/A-Z/a-z/;
7703: my %uidhash=&idrget($udom,$uname);
7704: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7705: && (!$forceid)) {
7706: unless ($uid eq $uidhash{$uname}) {
7707: return 'error: user id "'.$uid.'" does not match '.
7708: 'current user id "'.$uidhash{$uname}.'".';
7709: }
7710: } else {
7711: &idput($udom,($uname => $uid));
7712: }
7713: }
7714: # -------------------------------------------------------------- Add names, etc
7715: my @tmp=&get('environment',
7716: ['firstname','middlename','lastname','generation','id',
7717: 'permanentemail','inststatus'],
7718: $udom,$uname);
7719: my (%names,%oldnames);
7720: if ($tmp[0] =~ m/^error:.*/) {
7721: %names=();
7722: } else {
7723: %names = @tmp;
7724: %oldnames = %names;
7725: }
7726: #
7727: # If name, email and/or uid are blank (e.g., because an uploaded file
7728: # of users did not contain them), do not overwrite existing values
7729: # unless field is in $candelete array ref.
7730: #
7731:
7732: my @fields = ('firstname','middlename','lastname','generation',
7733: 'permanentemail','id');
7734: my %newvalues;
7735: if (ref($candelete) eq 'ARRAY') {
7736: foreach my $field (@fields) {
7737: if (grep(/^\Q$field\E$/,@{$candelete})) {
7738: if ($field eq 'firstname') {
7739: $names{$field} = $first;
7740: } elsif ($field eq 'middlename') {
7741: $names{$field} = $middle;
7742: } elsif ($field eq 'lastname') {
7743: $names{$field} = $last;
7744: } elsif ($field eq 'generation') {
7745: $names{$field} = $gene;
7746: } elsif ($field eq 'permanentemail') {
7747: $names{$field} = $email;
7748: } elsif ($field eq 'id') {
7749: $names{$field} = $uid;
7750: }
7751: }
7752: }
7753: }
7754: if ($first) { $names{'firstname'} = $first; }
7755: if (defined($middle)) { $names{'middlename'} = $middle; }
7756: if ($last) { $names{'lastname'} = $last; }
7757: if (defined($gene)) { $names{'generation'} = $gene; }
7758: if ($email) {
7759: $email=~s/[^\w\@\.\-\,]//gs;
7760: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
7761: }
7762: if ($uid) { $names{'id'} = $uid; }
7763: if (defined($inststatus)) {
7764: $names{'inststatus'} = '';
7765: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
7766: if (ref($usertypes) eq 'HASH') {
7767: my @okstatuses;
7768: foreach my $item (split(/:/,$inststatus)) {
7769: if (defined($usertypes->{$item})) {
7770: push(@okstatuses,$item);
7771: }
7772: }
7773: if (@okstatuses) {
7774: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
7775: }
7776: }
7777: }
7778: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7779: $umode.', '.$first.', '.$middle.', '.
7780: $last.', '.$gene.', '.$email.', '.$inststatus;
7781: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7782: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7783: } else {
7784: $logmsg .= ' during self creation';
7785: }
7786: my $changed;
7787: if ($newuser) {
7788: $changed = 1;
7789: } else {
7790: foreach my $field (@fields) {
7791: if ($names{$field} ne $oldnames{$field}) {
7792: $changed = 1;
7793: last;
7794: }
7795: }
7796: }
7797: unless ($changed) {
7798: $logmsg = 'No changes in user information needed for: '.$logmsg;
7799: &logthis($logmsg);
7800: return 'ok';
7801: }
7802: my $reply = &put('environment', \%names, $udom,$uname);
7803: if ($reply ne 'ok') {
7804: return 'error: '.$reply;
7805: }
7806: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7807: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7808: }
7809: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7810: &devalidate_cache_new('namescache',$uname.':'.$udom);
7811: $logmsg = 'Success modifying user '.$logmsg;
7812: &logthis($logmsg);
7813: return 'ok';
7814: }
7815:
7816: # -------------------------------------------------------------- Modify student
7817:
7818: sub modifystudent {
7819: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7820: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7821: $selfenroll,$context,$inststatus)=@_;
7822: if (!$cid) {
7823: unless ($cid=$env{'request.course.id'}) {
7824: return 'not_in_class';
7825: }
7826: }
7827: # --------------------------------------------------------------- Make the user
7828: my $reply=&modifyuser
7829: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7830: $desiredhome,$email,$inststatus);
7831: unless ($reply eq 'ok') { return $reply; }
7832: # This will cause &modify_student_enrollment to get the uid from the
7833: # students environment
7834: $uid = undef if (!$forceid);
7835: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7836: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7837: return $reply;
7838: }
7839:
7840: sub modify_student_enrollment {
7841: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7842: my ($cdom,$cnum,$chome);
7843: if (!$cid) {
7844: unless ($cid=$env{'request.course.id'}) {
7845: return 'not_in_class';
7846: }
7847: $cdom=$env{'course.'.$cid.'.domain'};
7848: $cnum=$env{'course.'.$cid.'.num'};
7849: } else {
7850: ($cdom,$cnum)=split(/_/,$cid);
7851: }
7852: $chome=$env{'course.'.$cid.'.home'};
7853: if (!$chome) {
7854: $chome=&homeserver($cnum,$cdom);
7855: }
7856: if (!$chome) { return 'unknown_course'; }
7857: # Make sure the user exists
7858: my $uhome=&homeserver($uname,$udom);
7859: if (($uhome eq '') || ($uhome eq 'no_host')) {
7860: return 'error: no such user';
7861: }
7862: # Get student data if we were not given enough information
7863: if (!defined($first) || $first eq '' ||
7864: !defined($last) || $last eq '' ||
7865: !defined($uid) || $uid eq '' ||
7866: !defined($middle) || $middle eq '' ||
7867: !defined($gene) || $gene eq '') {
7868: # They did not supply us with enough data to enroll the student, so
7869: # we need to pick up more information.
7870: my %tmp = &get('environment',
7871: ['firstname','middlename','lastname', 'generation','id']
7872: ,$udom,$uname);
7873:
7874: #foreach my $key (keys(%tmp)) {
7875: # &logthis("key $key = ".$tmp{$key});
7876: #}
7877: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7878: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7879: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7880: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7881: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7882: }
7883: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7884: my $user = "$uname:$udom";
7885: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
7886: my $reply=cput('classlist',
7887: {$user =>
7888: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7889: $cdom,$cnum);
7890: if (($reply eq 'ok') || ($reply eq 'delayed')) {
7891: &devalidate_getsection_cache($udom,$uname,$cid);
7892: } else {
7893: return 'error: '.$reply;
7894: }
7895: # Add student role to user
7896: my $uurl='/'.$cid;
7897: $uurl=~s/\_/\//g;
7898: if ($usec) {
7899: $uurl.='/'.$usec;
7900: }
7901: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
7902: $selfenroll,$context);
7903: if ($result ne 'ok') {
7904: if ($old_entry{$user} ne '') {
7905: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
7906: } else {
7907: $reply = &del('classlist',[$user],$cdom,$cnum);
7908: }
7909: }
7910: return $result;
7911: }
7912:
7913: sub format_name {
7914: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7915: my $name;
7916: if ($first ne 'lastname') {
7917: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7918: } else {
7919: if ($lastname=~/\S/) {
7920: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7921: $name=~s/\s+,/,/;
7922: } else {
7923: $name.= $firstname.' '.$middlename.' '.$generation;
7924: }
7925: }
7926: $name=~s/^\s+//;
7927: $name=~s/\s+$//;
7928: $name=~s/\s+/ /g;
7929: return $name;
7930: }
7931:
7932: # ------------------------------------------------- Write to course preferences
7933:
7934: sub writecoursepref {
7935: my ($courseid,%prefs)=@_;
7936: $courseid=~s/^\///;
7937: $courseid=~s/\_/\//g;
7938: my ($cdomain,$cnum)=split(/\//,$courseid);
7939: my $chome=homeserver($cnum,$cdomain);
7940: if (($chome eq '') || ($chome eq 'no_host')) {
7941: return 'error: no such course';
7942: }
7943: my $cstring='';
7944: foreach my $pref (keys(%prefs)) {
7945: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7946: }
7947: $cstring=~s/\&$//;
7948: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7949: }
7950:
7951: # ---------------------------------------------------------- Make/modify course
7952:
7953: sub createcourse {
7954: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7955: $course_owner,$crstype,$cnum,$context,$category)=@_;
7956: $url=&declutter($url);
7957: my $cid='';
7958: if ($context eq 'requestcourses') {
7959: my $can_create = 0;
7960: my ($ownername,$ownerdom) = split(':',$course_owner);
7961: if ($udom eq $ownerdom) {
7962: if (&usertools_access($ownername,$ownerdom,$category,undef,
7963: $context)) {
7964: $can_create = 1;
7965: }
7966: } else {
7967: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7968: $category);
7969: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7970: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7971: if (@curr > 0) {
7972: my @options = qw(approval validate autolimit);
7973: my $optregex = join('|',@options);
7974: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7975: $can_create = 1;
7976: }
7977: }
7978: }
7979: }
7980: if ($can_create) {
7981: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7982: unless (&allowed('ccc',$udom)) {
7983: return 'refused';
7984: }
7985: }
7986: } else {
7987: return 'refused';
7988: }
7989: } elsif (!&allowed('ccc',$udom)) {
7990: return 'refused';
7991: }
7992: # --------------------------------------------------------------- Get Unique ID
7993: my $uname;
7994: if ($cnum =~ /^$match_courseid$/) {
7995: my $chome=&homeserver($cnum,$udom,'true');
7996: if (($chome eq '') || ($chome eq 'no_host')) {
7997: $uname = $cnum;
7998: } else {
7999: $uname = &generate_coursenum($udom,$crstype);
8000: }
8001: } else {
8002: $uname = &generate_coursenum($udom,$crstype);
8003: }
8004: return $uname if ($uname =~ /^error/);
8005: # -------------------------------------------------- Check supplied server name
8006: if (!defined($course_server)) {
8007: if (defined(&domain($udom,'primary'))) {
8008: $course_server = &domain($udom,'primary');
8009: } else {
8010: $course_server = $env{'user.home'};
8011: }
8012: }
8013: my %host_servers =
8014: &Apache::lonnet::get_servers($udom,'library');
8015: unless ($host_servers{$course_server}) {
8016: return 'error: invalid home server for course: '.$course_server;
8017: }
8018: # ------------------------------------------------------------- Make the course
8019: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8020: $course_server);
8021: unless ($reply eq 'ok') { return 'error: '.$reply; }
8022: my $uhome=&homeserver($uname,$udom,'true');
8023: if (($uhome eq '') || ($uhome eq 'no_host')) {
8024: return 'error: no such course';
8025: }
8026: # ----------------------------------------------------------------- Course made
8027: # log existence
8028: my $now = time;
8029: my $newcourse = {
8030: $udom.'_'.$uname => {
8031: description => $description,
8032: inst_code => $inst_code,
8033: owner => $course_owner,
8034: type => $crstype,
8035: creator => $env{'user.name'}.':'.
8036: $env{'user.domain'},
8037: created => $now,
8038: context => $context,
8039: },
8040: };
8041: &courseidput($udom,$newcourse,$uhome,'notime');
8042: # set toplevel url
8043: my $topurl=$url;
8044: unless ($nonstandard) {
8045: # ------------------------------------------ For standard courses, make top url
8046: my $mapurl=&clutter($url);
8047: if ($mapurl eq '/res/') { $mapurl=''; }
8048: $env{'form.initmap'}=(<<ENDINITMAP);
8049: <map>
8050: <resource id="1" type="start"></resource>
8051: <resource id="2" src="$mapurl"></resource>
8052: <resource id="3" type="finish"></resource>
8053: <link index="1" from="1" to="2"></link>
8054: <link index="2" from="2" to="3"></link>
8055: </map>
8056: ENDINITMAP
8057: $topurl=&declutter(
8058: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8059: );
8060: }
8061: # ----------------------------------------------------------- Write preferences
8062: &writecoursepref($udom.'_'.$uname,
8063: ('description' => $description,
8064: 'url' => $topurl,
8065: 'internal.creator' => $env{'user.name'}.':'.
8066: $env{'user.domain'},
8067: 'internal.created' => $now,
8068: 'internal.creationcontext' => $context)
8069: );
8070: return '/'.$udom.'/'.$uname;
8071: }
8072:
8073: # ------------------------------------------------------------------- Create ID
8074: sub generate_coursenum {
8075: my ($udom,$crstype) = @_;
8076: my $domdesc = &domain($udom);
8077: return 'error: invalid domain' if ($domdesc eq '');
8078: my $first;
8079: if ($crstype eq 'Community') {
8080: $first = '0';
8081: } else {
8082: $first = int(1+rand(9));
8083: }
8084: my $uname=$first.
8085: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8086: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8087: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8088: # ----------------------------------------------- Make sure that does not exist
8089: my $uhome=&homeserver($uname,$udom,'true');
8090: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8091: if ($crstype eq 'Community') {
8092: $first = '0';
8093: } else {
8094: $first = int(1+rand(9));
8095: }
8096: $uname=$first.
8097: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8098: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8099: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8100: $uhome=&homeserver($uname,$udom,'true');
8101: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8102: return 'error: unable to generate unique course-ID';
8103: }
8104: }
8105: return $uname;
8106: }
8107:
8108: sub is_course {
8109: my ($cdom,$cnum) = @_;
8110: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
8111: undef,'.');
8112: if (exists($courses{$cdom.'_'.$cnum})) {
8113: return 1;
8114: }
8115: return 0;
8116: }
8117:
8118: sub store_userdata {
8119: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8120: my $result;
8121: if ($datakey ne '') {
8122: if (ref($storehash) eq 'HASH') {
8123: if ($udom eq '' || $uname eq '') {
8124: $udom = $env{'user.domain'};
8125: $uname = $env{'user.name'};
8126: }
8127: my $uhome=&homeserver($uname,$udom);
8128: if (($uhome eq '') || ($uhome eq 'no_host')) {
8129: $result = 'error: no_host';
8130: } else {
8131: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8132: $storehash->{'host'} = $perlvar{'lonHostID'};
8133:
8134: my $namevalue='';
8135: foreach my $key (keys(%{$storehash})) {
8136: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8137: }
8138: $namevalue=~s/\&$//;
8139: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8140: $namevalue,$uhome);
8141: }
8142: } else {
8143: $result = 'error: data to store was not a hash reference';
8144: }
8145: } else {
8146: $result= 'error: invalid requestkey';
8147: }
8148: return $result;
8149: }
8150:
8151: # ---------------------------------------------------------- Assign Custom Role
8152:
8153: sub assigncustomrole {
8154: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8155: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8156: $end,$start,$deleteflag,$selfenroll,$context);
8157: }
8158:
8159: # ----------------------------------------------------------------- Revoke Role
8160:
8161: sub revokerole {
8162: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8163: my $now=time;
8164: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8165: }
8166:
8167: # ---------------------------------------------------------- Revoke Custom Role
8168:
8169: sub revokecustomrole {
8170: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8171: my $now=time;
8172: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8173: $deleteflag,$selfenroll,$context);
8174: }
8175:
8176: # ------------------------------------------------------------ Disk usage
8177: sub diskusage {
8178: my ($udom,$uname,$directorypath,$getpropath)=@_;
8179: $directorypath =~ s/\/$//;
8180: my $listing=&reply('du2:'.&escape($directorypath).':'
8181: .&escape($getpropath).':'.&escape($uname).':'
8182: .&escape($udom),homeserver($uname,$udom));
8183: if ($listing eq 'unknown_cmd') {
8184: if ($getpropath) {
8185: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8186: }
8187: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8188: }
8189: return $listing;
8190: }
8191:
8192: sub is_locked {
8193: my ($file_name, $domain, $user, $which) = @_;
8194: my @check;
8195: my $is_locked;
8196: push (@check,$file_name);
8197: my %locked = &get('file_permissions',\@check,
8198: $env{'user.domain'},$env{'user.name'});
8199: my ($tmp)=keys(%locked);
8200: if ($tmp=~/^error:/) { undef(%locked); }
8201:
8202: if (ref($locked{$file_name}) eq 'ARRAY') {
8203: $is_locked = 'false';
8204: foreach my $entry (@{$locked{$file_name}}) {
8205: if (ref($entry) eq 'ARRAY') {
8206: $is_locked = 'true';
8207: if (ref($which) eq 'ARRAY') {
8208: push(@{$which},$entry);
8209: } else {
8210: last;
8211: }
8212: }
8213: }
8214: } else {
8215: $is_locked = 'false';
8216: }
8217: return $is_locked;
8218: }
8219:
8220: sub declutter_portfile {
8221: my ($file) = @_;
8222: $file =~ s{^(/portfolio/|portfolio/)}{/};
8223: return $file;
8224: }
8225:
8226: # ------------------------------------------------------------- Mark as Read Only
8227:
8228: sub mark_as_readonly {
8229: my ($domain,$user,$files,$what) = @_;
8230: my %current_permissions = &dump('file_permissions',$domain,$user);
8231: my ($tmp)=keys(%current_permissions);
8232: if ($tmp=~/^error:/) { undef(%current_permissions); }
8233: foreach my $file (@{$files}) {
8234: $file = &declutter_portfile($file);
8235: push(@{$current_permissions{$file}},$what);
8236: }
8237: &put('file_permissions',\%current_permissions,$domain,$user);
8238: return;
8239: }
8240:
8241: # ------------------------------------------------------------Save Selected Files
8242:
8243: sub save_selected_files {
8244: my ($user, $path, @files) = @_;
8245: my $filename = $user."savedfiles";
8246: my @other_files = &files_not_in_path($user, $path);
8247: open (OUT, '>'.$tmpdir.$filename);
8248: foreach my $file (@files) {
8249: print (OUT $env{'form.currentpath'}.$file."\n");
8250: }
8251: foreach my $file (@other_files) {
8252: print (OUT $file."\n");
8253: }
8254: close (OUT);
8255: return 'ok';
8256: }
8257:
8258: sub clear_selected_files {
8259: my ($user) = @_;
8260: my $filename = $user."savedfiles";
8261: open (OUT, '>'.LONCAPA::tempdir().$filename);
8262: print (OUT undef);
8263: close (OUT);
8264: return ("ok");
8265: }
8266:
8267: sub files_in_path {
8268: my ($user, $path) = @_;
8269: my $filename = $user."savedfiles";
8270: my %return_files;
8271: open (IN, '<'.LONCAPA::tempdir().$filename);
8272: while (my $line_in = <IN>) {
8273: chomp ($line_in);
8274: my @paths_and_file = split (m!/!, $line_in);
8275: my $file_part = pop (@paths_and_file);
8276: my $path_part = join ('/', @paths_and_file);
8277: $path_part.='/';
8278: my $path_and_file = $path_part.$file_part;
8279: if ($path_part eq $path) {
8280: $return_files{$file_part}= 'selected';
8281: }
8282: }
8283: close (IN);
8284: return (\%return_files);
8285: }
8286:
8287: # called in portfolio select mode, to show files selected NOT in current directory
8288: sub files_not_in_path {
8289: my ($user, $path) = @_;
8290: my $filename = $user."savedfiles";
8291: my @return_files;
8292: my $path_part;
8293: open(IN, '<'.LONCAPA::.$filename);
8294: while (my $line = <IN>) {
8295: #ok, I know it's clunky, but I want it to work
8296: my @paths_and_file = split(m|/|, $line);
8297: my $file_part = pop(@paths_and_file);
8298: chomp($file_part);
8299: my $path_part = join('/', @paths_and_file);
8300: $path_part .= '/';
8301: my $path_and_file = $path_part.$file_part;
8302: if ($path_part ne $path) {
8303: push(@return_files, ($path_and_file));
8304: }
8305: }
8306: close(OUT);
8307: return (@return_files);
8308: }
8309:
8310: #----------------------------------------------Get portfolio file permissions
8311:
8312: sub get_portfile_permissions {
8313: my ($domain,$user) = @_;
8314: my %current_permissions = &dump('file_permissions',$domain,$user);
8315: my ($tmp)=keys(%current_permissions);
8316: if ($tmp=~/^error:/) { undef(%current_permissions); }
8317: return \%current_permissions;
8318: }
8319:
8320: #---------------------------------------------Get portfolio file access controls
8321:
8322: sub get_access_controls {
8323: my ($current_permissions,$group,$file) = @_;
8324: my %access;
8325: my $real_file = $file;
8326: $file =~ s/\.meta$//;
8327: if (defined($file)) {
8328: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8329: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8330: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8331: }
8332: }
8333: } else {
8334: foreach my $key (keys(%{$current_permissions})) {
8335: if ($key =~ /\0accesscontrol$/) {
8336: if (defined($group)) {
8337: if ($key !~ m-^\Q$group\E/-) {
8338: next;
8339: }
8340: }
8341: my ($fullpath) = split(/\0/,$key);
8342: if (ref($$current_permissions{$key}) eq 'HASH') {
8343: foreach my $control (keys(%{$$current_permissions{$key}})) {
8344: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8345: }
8346: }
8347: }
8348: }
8349: }
8350: return %access;
8351: }
8352:
8353: sub modify_access_controls {
8354: my ($file_name,$changes,$domain,$user)=@_;
8355: my ($outcome,$deloutcome);
8356: my %store_permissions;
8357: my %new_values;
8358: my %new_control;
8359: my %translation;
8360: my @deletions = ();
8361: my $now = time;
8362: if (exists($$changes{'activate'})) {
8363: if (ref($$changes{'activate'}) eq 'HASH') {
8364: my @newitems = sort(keys(%{$$changes{'activate'}}));
8365: my $numnew = scalar(@newitems);
8366: for (my $i=0; $i<$numnew; $i++) {
8367: my $newkey = $newitems[$i];
8368: my $newid = &Apache::loncommon::get_cgi_id();
8369: if ($newkey =~ /^\d+:/) {
8370: $newkey =~ s/^(\d+)/$newid/;
8371: $translation{$1} = $newid;
8372: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8373: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8374: $translation{$1} = $newid;
8375: }
8376: $new_values{$file_name."\0".$newkey} =
8377: $$changes{'activate'}{$newitems[$i]};
8378: $new_control{$newkey} = $now;
8379: }
8380: }
8381: }
8382: my %todelete;
8383: my %changed_items;
8384: foreach my $action ('delete','update') {
8385: if (exists($$changes{$action})) {
8386: if (ref($$changes{$action}) eq 'HASH') {
8387: foreach my $key (keys(%{$$changes{$action}})) {
8388: my ($itemnum) = ($key =~ /^([^:]+):/);
8389: if ($action eq 'delete') {
8390: $todelete{$itemnum} = 1;
8391: } else {
8392: $changed_items{$itemnum} = $key;
8393: }
8394: }
8395: }
8396: }
8397: }
8398: # get lock on access controls for file.
8399: my $lockhash = {
8400: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8401: ':'.$env{'user.domain'},
8402: };
8403: my $tries = 0;
8404: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8405:
8406: while (($gotlock ne 'ok') && $tries <3) {
8407: $tries ++;
8408: sleep 1;
8409: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8410: }
8411: if ($gotlock eq 'ok') {
8412: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8413: my ($tmp)=keys(%curr_permissions);
8414: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8415: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8416: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8417: if (ref($curr_controls) eq 'HASH') {
8418: foreach my $control_item (keys(%{$curr_controls})) {
8419: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8420: if (defined($todelete{$itemnum})) {
8421: push(@deletions,$file_name."\0".$control_item);
8422: } else {
8423: if (defined($changed_items{$itemnum})) {
8424: $new_control{$changed_items{$itemnum}} = $now;
8425: push(@deletions,$file_name."\0".$control_item);
8426: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8427: } else {
8428: $new_control{$control_item} = $$curr_controls{$control_item};
8429: }
8430: }
8431: }
8432: }
8433: }
8434: my ($group);
8435: if (&is_course($domain,$user)) {
8436: ($group,my $file) = split(/\//,$file_name,2);
8437: }
8438: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8439: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8440: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8441: # remove lock
8442: my @del_lock = ($file_name."\0".'locked_access_records');
8443: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8444: my $sqlresult =
8445: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8446: $group);
8447: } else {
8448: $outcome = "error: could not obtain lockfile\n";
8449: }
8450: return ($outcome,$deloutcome,\%new_values,\%translation);
8451: }
8452:
8453: sub make_public_indefinitely {
8454: my ($requrl) = @_;
8455: my $now = time;
8456: my $action = 'activate';
8457: my $aclnum = 0;
8458: if (&is_portfolio_url($requrl)) {
8459: my (undef,$udom,$unum,$file_name,$group) =
8460: &parse_portfolio_url($requrl);
8461: my $current_perms = &get_portfile_permissions($udom,$unum);
8462: my %access_controls = &get_access_controls($current_perms,
8463: $group,$file_name);
8464: foreach my $key (keys(%{$access_controls{$file_name}})) {
8465: my ($num,$scope,$end,$start) =
8466: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8467: if ($scope eq 'public') {
8468: if ($start <= $now && $end == 0) {
8469: $action = 'none';
8470: } else {
8471: $action = 'update';
8472: $aclnum = $num;
8473: }
8474: last;
8475: }
8476: }
8477: if ($action eq 'none') {
8478: return 'ok';
8479: } else {
8480: my %changes;
8481: my $newend = 0;
8482: my $newstart = $now;
8483: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8484: $changes{$action}{$newkey} = {
8485: type => 'public',
8486: time => {
8487: start => $newstart,
8488: end => $newend,
8489: },
8490: };
8491: my ($outcome,$deloutcome,$new_values,$translation) =
8492: &modify_access_controls($file_name,\%changes,$udom,$unum);
8493: return $outcome;
8494: }
8495: } else {
8496: return 'invalid';
8497: }
8498: }
8499:
8500: #------------------------------------------------------Get Marked as Read Only
8501:
8502: sub get_marked_as_readonly {
8503: my ($domain,$user,$what,$group) = @_;
8504: my $current_permissions = &get_portfile_permissions($domain,$user);
8505: my @readonly_files;
8506: my $cmp1=$what;
8507: if (ref($what)) { $cmp1=join('',@{$what}) };
8508: while (my ($file_name,$value) = each(%{$current_permissions})) {
8509: if (defined($group)) {
8510: if ($file_name !~ m-^\Q$group\E/-) {
8511: next;
8512: }
8513: }
8514: if (ref($value) eq "ARRAY"){
8515: foreach my $stored_what (@{$value}) {
8516: my $cmp2=$stored_what;
8517: if (ref($stored_what) eq 'ARRAY') {
8518: $cmp2=join('',@{$stored_what});
8519: }
8520: if ($cmp1 eq $cmp2) {
8521: push(@readonly_files, $file_name);
8522: last;
8523: } elsif (!defined($what)) {
8524: push(@readonly_files, $file_name);
8525: last;
8526: }
8527: }
8528: }
8529: }
8530: return @readonly_files;
8531: }
8532: #-----------------------------------------------------------Get Marked as Read Only Hash
8533:
8534: sub get_marked_as_readonly_hash {
8535: my ($current_permissions,$group,$what) = @_;
8536: my %readonly_files;
8537: while (my ($file_name,$value) = each(%{$current_permissions})) {
8538: if (defined($group)) {
8539: if ($file_name !~ m-^\Q$group\E/-) {
8540: next;
8541: }
8542: }
8543: if (ref($value) eq "ARRAY"){
8544: foreach my $stored_what (@{$value}) {
8545: if (ref($stored_what) eq 'ARRAY') {
8546: foreach my $lock_descriptor(@{$stored_what}) {
8547: if ($lock_descriptor eq 'graded') {
8548: $readonly_files{$file_name} = 'graded';
8549: } elsif ($lock_descriptor eq 'handback') {
8550: $readonly_files{$file_name} = 'handback';
8551: } else {
8552: if (!exists($readonly_files{$file_name})) {
8553: $readonly_files{$file_name} = 'locked';
8554: }
8555: }
8556: }
8557: }
8558: }
8559: }
8560: }
8561: return %readonly_files;
8562: }
8563: # ------------------------------------------------------------ Unmark as Read Only
8564:
8565: sub unmark_as_readonly {
8566: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8567: # for portfolio submissions, $what contains [$symb,$crsid]
8568: my ($domain,$user,$what,$file_name,$group) = @_;
8569: $file_name = &declutter_portfile($file_name);
8570: my $symb_crs = $what;
8571: if (ref($what)) { $symb_crs=join('',@$what); }
8572: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
8573: my ($tmp)=keys(%current_permissions);
8574: if ($tmp=~/^error:/) { undef(%current_permissions); }
8575: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
8576: foreach my $file (@readonly_files) {
8577: my $clean_file = &declutter_portfile($file);
8578: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
8579: my $current_locks = $current_permissions{$file};
8580: my @new_locks;
8581: my @del_keys;
8582: if (ref($current_locks) eq "ARRAY"){
8583: foreach my $locker (@{$current_locks}) {
8584: my $compare=$locker;
8585: if (ref($locker) eq 'ARRAY') {
8586: $compare=join('',@{$locker});
8587: if ($compare ne $symb_crs) {
8588: push(@new_locks, $locker);
8589: }
8590: }
8591: }
8592: if (scalar(@new_locks) > 0) {
8593: $current_permissions{$file} = \@new_locks;
8594: } else {
8595: push(@del_keys, $file);
8596: &del('file_permissions',\@del_keys, $domain, $user);
8597: delete($current_permissions{$file});
8598: }
8599: }
8600: }
8601: &put('file_permissions',\%current_permissions,$domain,$user);
8602: return;
8603: }
8604:
8605: # ------------------------------------------------------------ Directory lister
8606:
8607: sub dirlist {
8608: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
8609: $uri=~s/^\///;
8610: $uri=~s/\/$//;
8611: my ($udom, $uname);
8612: if ($getuserdir) {
8613: $udom = $userdomain;
8614: $uname = $username;
8615: } else {
8616: (undef,$udom,$uname)=split(/\//,$uri);
8617: if(defined($userdomain)) {
8618: $udom = $userdomain;
8619: }
8620: if(defined($username)) {
8621: $uname = $username;
8622: }
8623: }
8624: my ($dirRoot,$listing,@listing_results);
8625:
8626: $dirRoot = $perlvar{'lonDocRoot'};
8627: if (defined($getpropath)) {
8628: $dirRoot = &propath($udom,$uname);
8629: $dirRoot =~ s/\/$//;
8630: } elsif (defined($getuserdir)) {
8631: my $subdir=$uname.'__';
8632: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
8633: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8634: ."/$udom/$subdir/$uname";
8635: } elsif (defined($alternateRoot)) {
8636: $dirRoot = $alternateRoot;
8637: }
8638:
8639: if($udom) {
8640: if($uname) {
8641: my $uhome = &homeserver($uname,$udom);
8642: if ($uhome eq 'no_host') {
8643: return ([],'no_host');
8644: }
8645: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8646: .$getuserdir.':'.&escape($dirRoot)
8647: .':'.&escape($uname).':'.&escape($udom),$uhome);
8648: if ($listing eq 'unknown_cmd') {
8649: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
8650: } else {
8651: @listing_results = map { &unescape($_); } split(/:/,$listing);
8652: }
8653: if ($listing eq 'unknown_cmd') {
8654: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
8655: @listing_results = split(/:/,$listing);
8656: } else {
8657: @listing_results = map { &unescape($_); } split(/:/,$listing);
8658: }
8659: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8660: ($listing eq 'rejected') || ($listing eq 'refused') ||
8661: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8662: return ([],$listing);
8663: } else {
8664: return (\@listing_results);
8665: }
8666: } elsif(!$alternateRoot) {
8667: my (%allusers,%listerror);
8668: my %servers = &get_servers($udom,'library');
8669: foreach my $tryserver (keys(%servers)) {
8670: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8671: &escape($udom),$tryserver);
8672: if ($listing eq 'unknown_cmd') {
8673: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8674: $udom, $tryserver);
8675: } else {
8676: @listing_results = map { &unescape($_); } split(/:/,$listing);
8677: }
8678: if ($listing eq 'unknown_cmd') {
8679: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8680: $udom, $tryserver);
8681: @listing_results = split(/:/,$listing);
8682: } else {
8683: @listing_results =
8684: map { &unescape($_); } split(/:/,$listing);
8685: }
8686: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8687: ($listing eq 'rejected') || ($listing eq 'refused') ||
8688: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8689: $listerror{$tryserver} = $listing;
8690: } else {
8691: foreach my $line (@listing_results) {
8692: my ($entry) = split(/&/,$line,2);
8693: $allusers{$entry} = 1;
8694: }
8695: }
8696: }
8697: my @alluserslist=();
8698: foreach my $user (sort(keys(%allusers))) {
8699: push(@alluserslist,$user.'&user');
8700: }
8701: return (\@alluserslist);
8702: } else {
8703: return ([],'missing username');
8704: }
8705: } elsif(!defined($getpropath)) {
8706: my $path = $perlvar{'lonDocRoot'}.'/res/';
8707: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
8708: return (\@all_domains);
8709: } else {
8710: return ([],'missing domain');
8711: }
8712: }
8713:
8714: # --------------------------------------------- GetFileTimestamp
8715: # This function utilizes dirlist and returns the date stamp for
8716: # when it was last modified. It will also return an error of -1
8717: # if an error occurs
8718:
8719: sub GetFileTimestamp {
8720: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
8721: $studentDomain = &LONCAPA::clean_domain($studentDomain);
8722: $studentName = &LONCAPA::clean_username($studentName);
8723: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
8724: undef,$getuserdir);
8725: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8726: return -1;
8727: }
8728: if (ref($fileref) eq 'ARRAY') {
8729: my @stats = split('&',$fileref->[0]);
8730: # @stats contains first the filename, then the stat output
8731: return $stats[10]; # so this is 10 instead of 9.
8732: } else {
8733: return -1;
8734: }
8735: }
8736:
8737: sub stat_file {
8738: my ($uri) = @_;
8739: $uri = &clutter_with_no_wrapper($uri);
8740:
8741: my ($udom,$uname,$file);
8742: if ($uri =~ m-^/(uploaded|editupload)/-) {
8743: ($udom,$uname,$file) =
8744: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
8745: $file = 'userfiles/'.$file;
8746: }
8747: if ($uri =~ m-^/res/-) {
8748: ($udom,$uname) =
8749: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
8750: $file = $uri;
8751: }
8752:
8753: if (!$udom || !$uname || !$file) {
8754: # unable to handle the uri
8755: return ();
8756: }
8757: my $getpropath;
8758: if ($file =~ /^userfiles\//) {
8759: $getpropath = 1;
8760: }
8761: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
8762: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8763: return ();
8764: } else {
8765: if (ref($listref) eq 'ARRAY') {
8766: my @stats = split('&',$listref->[0]);
8767: shift(@stats); #filename is first
8768: return @stats;
8769: }
8770: }
8771: return ();
8772: }
8773:
8774: # -------------------------------------------------------- Value of a Condition
8775:
8776: # gets the value of a specific preevaluated condition
8777: # stored in the string $env{user.state.<cid>}
8778: # or looks up a condition reference in the bighash and if if hasn't
8779: # already been evaluated recurses into docondval to get the value of
8780: # the condition, then memoizing it to
8781: # $env{user.state.<cid>.<condition>}
8782: sub directcondval {
8783: my $number=shift;
8784: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
8785: &Apache::lonuserstate::evalstate();
8786: }
8787: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
8788: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
8789: } elsif ($number =~ /^_/) {
8790: my $sub_condition;
8791: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8792: &GDBM_READER(),0640)) {
8793: $sub_condition=$bighash{'conditions'.$number};
8794: untie(%bighash);
8795: }
8796: my $value = &docondval($sub_condition);
8797: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
8798: return $value;
8799: }
8800: if ($env{'user.state.'.$env{'request.course.id'}}) {
8801: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8802: } else {
8803: return 2;
8804: }
8805: }
8806:
8807: # get the collection of conditions for this resource
8808: sub condval {
8809: my $condidx=shift;
8810: my $allpathcond='';
8811: foreach my $cond (split(/\|/,$condidx)) {
8812: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8813: $allpathcond.=
8814: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8815: }
8816: }
8817: $allpathcond=~s/\|$//;
8818: return &docondval($allpathcond);
8819: }
8820:
8821: #evaluates an expression of conditions
8822: sub docondval {
8823: my ($allpathcond) = @_;
8824: my $result=0;
8825: if ($env{'request.course.id'}
8826: && defined($allpathcond)) {
8827: my $operand='|';
8828: my @stack;
8829: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8830: if ($chunk eq '(') {
8831: push @stack,($operand,$result);
8832: } elsif ($chunk eq ')') {
8833: my $before=pop @stack;
8834: if (pop @stack eq '&') {
8835: $result=$result>$before?$before:$result;
8836: } else {
8837: $result=$result>$before?$result:$before;
8838: }
8839: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8840: $operand=$chunk;
8841: } else {
8842: my $new=directcondval($chunk);
8843: if ($operand eq '&') {
8844: $result=$result>$new?$new:$result;
8845: } else {
8846: $result=$result>$new?$result:$new;
8847: }
8848: }
8849: }
8850: }
8851: return $result;
8852: }
8853:
8854: # ---------------------------------------------------- Devalidate courseresdata
8855:
8856: sub devalidatecourseresdata {
8857: my ($coursenum,$coursedomain)=@_;
8858: my $hashid=$coursenum.':'.$coursedomain;
8859: &devalidate_cache_new('courseres',$hashid);
8860: }
8861:
8862:
8863: # --------------------------------------------------- Course Resourcedata Query
8864: #
8865: # Parameters:
8866: # $coursenum - Number of the course.
8867: # $coursedomain - Domain at which the course was created.
8868: # Returns:
8869: # A hash of the course parameters along (I think) with timestamps
8870: # and version info.
8871:
8872: sub get_courseresdata {
8873: my ($coursenum,$coursedomain)=@_;
8874: my $coursehom=&homeserver($coursenum,$coursedomain);
8875: my $hashid=$coursenum.':'.$coursedomain;
8876: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8877: my %dumpreply;
8878: unless (defined($cached)) {
8879: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8880: $result=\%dumpreply;
8881: my ($tmp) = keys(%dumpreply);
8882: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8883: &do_cache_new('courseres',$hashid,$result,600);
8884: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8885: return $tmp;
8886: } elsif ($tmp =~ /^(error)/) {
8887: $result=undef;
8888: &do_cache_new('courseres',$hashid,$result,600);
8889: }
8890: }
8891: return $result;
8892: }
8893:
8894: sub devalidateuserresdata {
8895: my ($uname,$udom)=@_;
8896: my $hashid="$udom:$uname";
8897: &devalidate_cache_new('userres',$hashid);
8898: }
8899:
8900: sub get_userresdata {
8901: my ($uname,$udom)=@_;
8902: #most student don\'t have any data set, check if there is some data
8903: if (&EXT_cache_status($udom,$uname)) { return undef; }
8904:
8905: my $hashid="$udom:$uname";
8906: my ($result,$cached)=&is_cached_new('userres',$hashid);
8907: if (!defined($cached)) {
8908: my %resourcedata=&dump('resourcedata',$udom,$uname);
8909: $result=\%resourcedata;
8910: &do_cache_new('userres',$hashid,$result,600);
8911: }
8912: my ($tmp)=keys(%$result);
8913: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8914: return $result;
8915: }
8916: #error 2 occurs when the .db doesn't exist
8917: if ($tmp!~/error: 2 /) {
8918: &logthis("<font color=\"blue\">WARNING:".
8919: " Trying to get resource data for ".
8920: $uname." at ".$udom.": ".
8921: $tmp."</font>");
8922: } elsif ($tmp=~/error: 2 /) {
8923: #&EXT_cache_set($udom,$uname);
8924: &do_cache_new('userres',$hashid,undef,600);
8925: undef($tmp); # not really an error so don't send it back
8926: }
8927: return $tmp;
8928: }
8929: #----------------------------------------------- resdata - return resource data
8930: # Purpose:
8931: # Return resource data for either users or for a course.
8932: # Parameters:
8933: # $name - Course/user name.
8934: # $domain - Name of the domain the user/course is registered on.
8935: # $type - Type of thing $name is (must be 'course' or 'user'
8936: # @which - Array of names of resources desired.
8937: # Returns:
8938: # The value of the first reasource in @which that is found in the
8939: # resource hash.
8940: # Exceptional Conditions:
8941: # If the $type passed in is not valid (not the string 'course' or
8942: # 'user', an undefined reference is returned.
8943: # If none of the resources are found, an undef is returned
8944: sub resdata {
8945: my ($name,$domain,$type,@which)=@_;
8946: my $result;
8947: if ($type eq 'course') {
8948: $result=&get_courseresdata($name,$domain);
8949: } elsif ($type eq 'user') {
8950: $result=&get_userresdata($name,$domain);
8951: }
8952: if (!ref($result)) { return $result; }
8953: foreach my $item (@which) {
8954: if (defined($result->{$item->[0]})) {
8955: return [$result->{$item->[0]},$item->[1]];
8956: }
8957: }
8958: return undef;
8959: }
8960:
8961: #
8962: # EXT resource caching routines
8963: #
8964:
8965: sub clear_EXT_cache_status {
8966: &delenv('cache.EXT.');
8967: }
8968:
8969: sub EXT_cache_status {
8970: my ($target_domain,$target_user) = @_;
8971: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8972: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8973: # We know already the user has no data
8974: return 1;
8975: } else {
8976: return 0;
8977: }
8978: }
8979:
8980: sub EXT_cache_set {
8981: my ($target_domain,$target_user) = @_;
8982: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8983: #&appenv({$cachename => time});
8984: }
8985:
8986: # --------------------------------------------------------- Value of a Variable
8987: sub EXT {
8988:
8989: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8990: unless ($varname) { return ''; }
8991: #get real user name/domain, courseid and symb
8992: my $courseid;
8993: my $publicuser;
8994: if ($symbparm) {
8995: $symbparm=&get_symb_from_alias($symbparm);
8996: }
8997: if (!($uname && $udom)) {
8998: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8999: if (!$symbparm) { $symbparm=$cursymb; }
9000: } else {
9001: $courseid=$env{'request.course.id'};
9002: }
9003: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9004: my $rest;
9005: if (defined($therest[0])) {
9006: $rest=join('.',@therest);
9007: } else {
9008: $rest='';
9009: }
9010:
9011: my $qualifierrest=$qualifier;
9012: if ($rest) { $qualifierrest.='.'.$rest; }
9013: my $spacequalifierrest=$space;
9014: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9015: if ($realm eq 'user') {
9016: # --------------------------------------------------------------- user.resource
9017: if ($space eq 'resource') {
9018: if ( (defined($Apache::lonhomework::parsing_a_problem)
9019: || defined($Apache::lonhomework::parsing_a_task))
9020: &&
9021: ($symbparm eq &symbread()) ) {
9022: # if we are in the middle of processing the resource the
9023: # get the value we are planning on committing
9024: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9025: return $Apache::lonhomework::results{$qualifierrest};
9026: } else {
9027: return $Apache::lonhomework::history{$qualifierrest};
9028: }
9029: } else {
9030: my %restored;
9031: if ($publicuser || $env{'request.state'} eq 'construct') {
9032: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9033: } else {
9034: %restored=&restore($symbparm,$courseid,$udom,$uname);
9035: }
9036: return $restored{$qualifierrest};
9037: }
9038: # ----------------------------------------------------------------- user.access
9039: } elsif ($space eq 'access') {
9040: # FIXME - not supporting calls for a specific user
9041: return &allowed($qualifier,$rest);
9042: # ------------------------------------------ user.preferences, user.environment
9043: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9044: if (($uname eq $env{'user.name'}) &&
9045: ($udom eq $env{'user.domain'})) {
9046: return $env{join('.',('environment',$qualifierrest))};
9047: } else {
9048: my %returnhash;
9049: if (!$publicuser) {
9050: %returnhash=&userenvironment($udom,$uname,
9051: $qualifierrest);
9052: }
9053: return $returnhash{$qualifierrest};
9054: }
9055: # ----------------------------------------------------------------- user.course
9056: } elsif ($space eq 'course') {
9057: # FIXME - not supporting calls for a specific user
9058: return $env{join('.',('request.course',$qualifier))};
9059: # ------------------------------------------------------------------- user.role
9060: } elsif ($space eq 'role') {
9061: # FIXME - not supporting calls for a specific user
9062: my ($role,$where)=split(/\./,$env{'request.role'});
9063: if ($qualifier eq 'value') {
9064: return $role;
9065: } elsif ($qualifier eq 'extent') {
9066: return $where;
9067: }
9068: # ----------------------------------------------------------------- user.domain
9069: } elsif ($space eq 'domain') {
9070: return $udom;
9071: # ------------------------------------------------------------------- user.name
9072: } elsif ($space eq 'name') {
9073: return $uname;
9074: # ---------------------------------------------------- Any other user namespace
9075: } else {
9076: my %reply;
9077: if (!$publicuser) {
9078: %reply=&get($space,[$qualifierrest],$udom,$uname);
9079: }
9080: return $reply{$qualifierrest};
9081: }
9082: } elsif ($realm eq 'query') {
9083: # ---------------------------------------------- pull stuff out of query string
9084: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9085: [$spacequalifierrest]);
9086: return $env{'form.'.$spacequalifierrest};
9087: } elsif ($realm eq 'request') {
9088: # ------------------------------------------------------------- request.browser
9089: if ($space eq 'browser') {
9090: return $env{'browser.'.$qualifier};
9091: # ------------------------------------------------------------ request.filename
9092: } else {
9093: return $env{'request.'.$spacequalifierrest};
9094: }
9095: } elsif ($realm eq 'course') {
9096: # ---------------------------------------------------------- course.description
9097: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9098: } elsif ($realm eq 'resource') {
9099:
9100: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9101: if (!$symbparm) { $symbparm=&symbread(); }
9102: }
9103:
9104: if ($space eq 'title') {
9105: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9106: return &gettitle($symbparm);
9107: }
9108:
9109: if ($space eq 'map') {
9110: my ($map) = &decode_symb($symbparm);
9111: return &symbread($map);
9112: }
9113: if ($space eq 'filename') {
9114: if ($symbparm) {
9115: return &clutter((&decode_symb($symbparm))[2]);
9116: }
9117: return &hreflocation('',$env{'request.filename'});
9118: }
9119:
9120: my ($section, $group, @groups);
9121: my ($courselevelm,$courselevel);
9122: if ($symbparm && defined($courseid) &&
9123: $courseid eq $env{'request.course.id'}) {
9124:
9125: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9126:
9127: # ----------------------------------------------------- Cascading lookup scheme
9128: my $symbp=$symbparm;
9129: my $mapp=&deversion((&decode_symb($symbp))[0]);
9130:
9131: my $symbparm=$symbp.'.'.$spacequalifierrest;
9132: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9133:
9134: if (($env{'user.name'} eq $uname) &&
9135: ($env{'user.domain'} eq $udom)) {
9136: $section=$env{'request.course.sec'};
9137: @groups = split(/:/,$env{'request.course.groups'});
9138: @groups=&sort_course_groups($courseid,@groups);
9139: } else {
9140: if (! defined($usection)) {
9141: $section=&getsection($udom,$uname,$courseid);
9142: } else {
9143: $section = $usection;
9144: }
9145: @groups = &get_users_groups($udom,$uname,$courseid);
9146: }
9147:
9148: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9149: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9150: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9151:
9152: $courselevel=$courseid.'.'.$spacequalifierrest;
9153: my $courselevelr=$courseid.'.'.$symbparm;
9154: $courselevelm=$courseid.'.'.$mapparm;
9155:
9156: # ----------------------------------------------------------- first, check user
9157:
9158: my $userreply=&resdata($uname,$udom,'user',
9159: ([$courselevelr,'resource'],
9160: [$courselevelm,'map' ],
9161: [$courselevel, 'course' ]));
9162: if (defined($userreply)) { return &get_reply($userreply); }
9163:
9164: # ------------------------------------------------ second, check some of course
9165: my $coursereply;
9166: if (@groups > 0) {
9167: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9168: $mapparm,$spacequalifierrest);
9169: if (defined($coursereply)) { return &get_reply($coursereply); }
9170: }
9171:
9172: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9173: $env{'course.'.$courseid.'.domain'},
9174: 'course',
9175: ([$seclevelr, 'resource'],
9176: [$seclevelm, 'map' ],
9177: [$seclevel, 'course' ],
9178: [$courselevelr,'resource']));
9179: if (defined($coursereply)) { return &get_reply($coursereply); }
9180:
9181: # ------------------------------------------------------ third, check map parms
9182: my %parmhash=();
9183: my $thisparm='';
9184: if (tie(%parmhash,'GDBM_File',
9185: $env{'request.course.fn'}.'_parms.db',
9186: &GDBM_READER(),0640)) {
9187: $thisparm=$parmhash{$symbparm};
9188: untie(%parmhash);
9189: }
9190: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9191: }
9192: # ------------------------------------------ fourth, look in resource metadata
9193:
9194: $spacequalifierrest=~s/\./\_/;
9195: my $filename;
9196: if (!$symbparm) { $symbparm=&symbread(); }
9197: if ($symbparm) {
9198: $filename=(&decode_symb($symbparm))[2];
9199: } else {
9200: $filename=$env{'request.filename'};
9201: }
9202: my $metadata=&metadata($filename,$spacequalifierrest);
9203: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9204: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9205: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9206:
9207: # ---------------------------------------------- fourth, look in rest of course
9208: if ($symbparm && defined($courseid) &&
9209: $courseid eq $env{'request.course.id'}) {
9210: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9211: $env{'course.'.$courseid.'.domain'},
9212: 'course',
9213: ([$courselevelm,'map' ],
9214: [$courselevel, 'course']));
9215: if (defined($coursereply)) { return &get_reply($coursereply); }
9216: }
9217: # ------------------------------------------------------------------ Cascade up
9218: unless ($space eq '0') {
9219: my @parts=split(/_/,$space);
9220: my $id=pop(@parts);
9221: my $part=join('_',@parts);
9222: if ($part eq '') { $part='0'; }
9223: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9224: $symbparm,$udom,$uname,$section,1);
9225: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9226: }
9227: if ($recurse) { return undef; }
9228: my $pack_def=&packages_tab_default($filename,$varname);
9229: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9230: # ---------------------------------------------------- Any other user namespace
9231: } elsif ($realm eq 'environment') {
9232: # ----------------------------------------------------------------- environment
9233: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9234: return $env{'environment.'.$spacequalifierrest};
9235: } else {
9236: if ($uname eq 'anonymous' && $udom eq '') {
9237: return '';
9238: }
9239: my %returnhash=&userenvironment($udom,$uname,
9240: $spacequalifierrest);
9241: return $returnhash{$spacequalifierrest};
9242: }
9243: } elsif ($realm eq 'system') {
9244: # ----------------------------------------------------------------- system.time
9245: if ($space eq 'time') {
9246: return time;
9247: }
9248: } elsif ($realm eq 'server') {
9249: # ----------------------------------------------------------------- system.time
9250: if ($space eq 'name') {
9251: return $ENV{'SERVER_NAME'};
9252: }
9253: }
9254: return '';
9255: }
9256:
9257: sub get_reply {
9258: my ($reply_value) = @_;
9259: if (ref($reply_value) eq 'ARRAY') {
9260: if (wantarray) {
9261: return @$reply_value;
9262: }
9263: return $reply_value->[0];
9264: } else {
9265: return $reply_value;
9266: }
9267: }
9268:
9269: sub check_group_parms {
9270: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9271: my @groupitems = ();
9272: my $resultitem;
9273: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9274: foreach my $group (@{$groups}) {
9275: foreach my $level (@levels) {
9276: my $item = $courseid.'.['.$group.'].'.$level->[0];
9277: push(@groupitems,[$item,$level->[1]]);
9278: }
9279: }
9280: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9281: $env{'course.'.$courseid.'.domain'},
9282: 'course',@groupitems);
9283: return $coursereply;
9284: }
9285:
9286: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9287: my ($courseid,@groups) = @_;
9288: @groups = sort(@groups);
9289: return @groups;
9290: }
9291:
9292: sub packages_tab_default {
9293: my ($uri,$varname)=@_;
9294: my (undef,$part,$name)=split(/\./,$varname);
9295:
9296: my (@extension,@specifics,$do_default);
9297: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9298: my ($pack_type,$pack_part)=split(/_/,$package,2);
9299: if ($pack_type eq 'default') {
9300: $do_default=1;
9301: } elsif ($pack_type eq 'extension') {
9302: push(@extension,[$package,$pack_type,$pack_part]);
9303: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9304: # only look at packages defaults for packages that this id is
9305: push(@specifics,[$package,$pack_type,$pack_part]);
9306: }
9307: }
9308: # first look for a package that matches the requested part id
9309: foreach my $package (@specifics) {
9310: my (undef,$pack_type,$pack_part)=@{$package};
9311: next if ($pack_part ne $part);
9312: if (defined($packagetab{"$pack_type&$name&default"})) {
9313: return $packagetab{"$pack_type&$name&default"};
9314: }
9315: }
9316: # look for any possible matching non extension_ package
9317: foreach my $package (@specifics) {
9318: my (undef,$pack_type,$pack_part)=@{$package};
9319: if (defined($packagetab{"$pack_type&$name&default"})) {
9320: return $packagetab{"$pack_type&$name&default"};
9321: }
9322: if ($pack_type eq 'part') { $pack_part='0'; }
9323: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9324: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9325: }
9326: }
9327: # look for any posible extension_ match
9328: foreach my $package (@extension) {
9329: my ($package,$pack_type)=@{$package};
9330: if (defined($packagetab{"$pack_type&$name&default"})) {
9331: return $packagetab{"$pack_type&$name&default"};
9332: }
9333: if (defined($packagetab{$package."&$name&default"})) {
9334: return $packagetab{$package."&$name&default"};
9335: }
9336: }
9337: # look for a global default setting
9338: if ($do_default && defined($packagetab{"default&$name&default"})) {
9339: return $packagetab{"default&$name&default"};
9340: }
9341: return undef;
9342: }
9343:
9344: sub add_prefix_and_part {
9345: my ($prefix,$part)=@_;
9346: my $keyroot;
9347: if (defined($prefix) && $prefix !~ /^__/) {
9348: # prefix that has a part already
9349: $keyroot=$prefix;
9350: } elsif (defined($prefix)) {
9351: # prefix that is missing a part
9352: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9353: } else {
9354: # no prefix at all
9355: if (defined($part)) { $keyroot='_'.$part; }
9356: }
9357: return $keyroot;
9358: }
9359:
9360: # ---------------------------------------------------------------- Get metadata
9361:
9362: my %metaentry;
9363: my %importedpartids;
9364: sub metadata {
9365: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9366: $uri=&declutter($uri);
9367: # if it is a non metadata possible uri return quickly
9368: if (($uri eq '') ||
9369: (($uri =~ m|^/*adm/|) &&
9370: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9371: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9372: return undef;
9373: }
9374: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9375: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9376: return undef;
9377: }
9378: my $filename=$uri;
9379: $uri=~s/\.meta$//;
9380: #
9381: # Is the metadata already cached?
9382: # Look at timestamp of caching
9383: # Everything is cached by the main uri, libraries are never directly cached
9384: #
9385: if (!defined($liburi)) {
9386: my ($result,$cached)=&is_cached_new('meta',$uri);
9387: if (defined($cached)) { return $result->{':'.$what}; }
9388: }
9389: {
9390: # Imported parts would go here
9391: my %importedids=();
9392: my @origfileimportpartids=();
9393: my $importedparts=0;
9394: #
9395: # Is this a recursive call for a library?
9396: #
9397: # if (! exists($metacache{$uri})) {
9398: # $metacache{$uri}={};
9399: # }
9400: my $cachetime = 60*60;
9401: if ($liburi) {
9402: $liburi=&declutter($liburi);
9403: $filename=$liburi;
9404: } else {
9405: &devalidate_cache_new('meta',$uri);
9406: undef(%metaentry);
9407: }
9408: my %metathesekeys=();
9409: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9410: my $metastring;
9411: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9412: my $which = &hreflocation('','/'.($liburi || $uri));
9413: $metastring =
9414: &Apache::lonnet::ssi_body($which,
9415: ('grade_target' => 'meta'));
9416: $cachetime = 1; # only want this cached in the child not long term
9417: } elsif (($uri !~ m -^(editupload)/-) &&
9418: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9419: my $file=&filelocation('',&clutter($filename));
9420: #push(@{$metaentry{$uri.'.file'}},$file);
9421: $metastring=&getfile($file);
9422: }
9423: my $parser=HTML::LCParser->new(\$metastring);
9424: my $token;
9425: undef %metathesekeys;
9426: while ($token=$parser->get_token) {
9427: if ($token->[0] eq 'S') {
9428: if (defined($token->[2]->{'package'})) {
9429: #
9430: # This is a package - get package info
9431: #
9432: my $package=$token->[2]->{'package'};
9433: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9434: if (defined($token->[2]->{'id'})) {
9435: $keyroot.='_'.$token->[2]->{'id'};
9436: }
9437: if ($metaentry{':packages'}) {
9438: $metaentry{':packages'}.=','.$package.$keyroot;
9439: } else {
9440: $metaentry{':packages'}=$package.$keyroot;
9441: }
9442: foreach my $pack_entry (keys(%packagetab)) {
9443: my $part=$keyroot;
9444: $part=~s/^\_//;
9445: if ($pack_entry=~/^\Q$package\E\&/ ||
9446: $pack_entry=~/^\Q$package\E_0\&/) {
9447: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9448: # ignore package.tab specified default values
9449: # here &package_tab_default() will fetch those
9450: if ($subp eq 'default') { next; }
9451: my $value=$packagetab{$pack_entry};
9452: my $unikey;
9453: if ($pack =~ /_0$/) {
9454: $unikey='parameter_0_'.$name;
9455: $part=0;
9456: } else {
9457: $unikey='parameter'.$keyroot.'_'.$name;
9458: }
9459: if ($subp eq 'display') {
9460: $value.=' [Part: '.$part.']';
9461: }
9462: $metaentry{':'.$unikey.'.part'}=$part;
9463: $metathesekeys{$unikey}=1;
9464: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9465: $metaentry{':'.$unikey.'.'.$subp}=$value;
9466: }
9467: if (defined($metaentry{':'.$unikey.'.default'})) {
9468: $metaentry{':'.$unikey}=
9469: $metaentry{':'.$unikey.'.default'};
9470: }
9471: }
9472: }
9473: } else {
9474: #
9475: # This is not a package - some other kind of start tag
9476: #
9477: my $entry=$token->[1];
9478: my $unikey='';
9479:
9480: if ($entry eq 'import') {
9481: #
9482: # Importing a library here
9483: #
9484: my $location=$parser->get_text('/import');
9485: my $dir=$filename;
9486: $dir=~s|[^/]*$||;
9487: $location=&filelocation($dir,$location);
9488:
9489: my $importmode=$token->[2]->{'importmode'};
9490: if ($importmode eq 'problem') {
9491: # Import as problem/response
9492: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9493: } elsif ($importmode eq 'part') {
9494: # Import as part(s)
9495: $importedparts=1;
9496: # We need to get the original file and the imported file to get the part order correct
9497: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9498: # Load and inspect original file
9499: if ($#origfileimportpartids<0) {
9500: undef(%importedpartids);
9501: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9502: my $origfile=&getfile($origfilelocation);
9503: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9504: }
9505:
9506: # Load and inspect imported file
9507: my $impfile=&getfile($location);
9508: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9509: if ($#impfilepartids>=0) {
9510: # This problem had parts
9511: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9512: } else {
9513: # Importing by turning a single problem into a problem part
9514: # It gets the import-tags ID as part-ID
9515: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9516: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9517: }
9518: } else {
9519: # Normal import
9520: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9521: if (defined($token->[2]->{'id'})) {
9522: $unikey.='_'.$token->[2]->{'id'};
9523: }
9524: }
9525:
9526: if ($depthcount<20) {
9527: my $metadata =
9528: &metadata($uri,'keys', $location,$unikey,
9529: $depthcount+1);
9530: foreach my $meta (split(',',$metadata)) {
9531: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9532: $metathesekeys{$meta}=1;
9533: }
9534:
9535: }
9536: } else {
9537: #
9538: # Not importing, some other kind of non-package, non-library start tag
9539: #
9540: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9541: if (defined($token->[2]->{'id'})) {
9542: $unikey.='_'.$token->[2]->{'id'};
9543: }
9544: if (defined($token->[2]->{'name'})) {
9545: $unikey.='_'.$token->[2]->{'name'};
9546: }
9547: $metathesekeys{$unikey}=1;
9548: foreach my $param (@{$token->[3]}) {
9549: $metaentry{':'.$unikey.'.'.$param} =
9550: $token->[2]->{$param};
9551: }
9552: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9553: my $default=$metaentry{':'.$unikey.'.default'};
9554: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9555: # only ws inside the tag, and not in default, so use default
9556: # as value
9557: $metaentry{':'.$unikey}=$default;
9558: } elsif ( $internaltext =~ /\S/ ) {
9559: # something interesting inside the tag
9560: $metaentry{':'.$unikey}=$internaltext;
9561: } else {
9562: # no interesting values, don't set a default
9563: }
9564: # end of not-a-package not-a-library import
9565: }
9566: # end of not-a-package start tag
9567: }
9568: # the next is the end of "start tag"
9569: }
9570: }
9571: my ($extension) = ($uri =~ /\.(\w+)$/);
9572: $extension = lc($extension);
9573: if ($extension eq 'htm') { $extension='html'; }
9574:
9575: foreach my $key (keys(%packagetab)) {
9576: #no specific packages #how's our extension
9577: if ($key!~/^extension_\Q$extension\E&/) { next; }
9578: &metadata_create_package_def($uri,$key,'extension_'.$extension,
9579: \%metathesekeys);
9580: }
9581:
9582: if (!exists($metaentry{':packages'})
9583: || $packagetab{"import_defaults&extension_$extension"}) {
9584: foreach my $key (keys(%packagetab)) {
9585: #no specific packages well let's get default then
9586: if ($key!~/^default&/) { next; }
9587: &metadata_create_package_def($uri,$key,'default',
9588: \%metathesekeys);
9589: }
9590: }
9591: # are there custom rights to evaluate
9592: if ($metaentry{':copyright'} eq 'custom') {
9593:
9594: #
9595: # Importing a rights file here
9596: #
9597: unless ($depthcount) {
9598: my $location=$metaentry{':customdistributionfile'};
9599: my $dir=$filename;
9600: $dir=~s|[^/]*$||;
9601: $location=&filelocation($dir,$location);
9602: my $rights_metadata =
9603: &metadata($uri,'keys',$location,'_rights',
9604: $depthcount+1);
9605: foreach my $rights (split(',',$rights_metadata)) {
9606: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
9607: $metathesekeys{$rights}=1;
9608: }
9609: }
9610: }
9611: # uniqifiy package listing
9612: my %seen;
9613: my @uniq_packages =
9614: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
9615: $metaentry{':packages'} = join(',',@uniq_packages);
9616:
9617: if ($importedparts) {
9618: # We had imported parts and need to rebuild partorder
9619: $metaentry{':partorder'}='';
9620: $metathesekeys{'partorder'}=1;
9621: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
9622: if ($origfileimportpartids[$index] eq 'part') {
9623: # original part, part of the problem
9624: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
9625: } else {
9626: # we have imported parts at this position
9627: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
9628: }
9629: }
9630: $metaentry{':partorder'}=~s/^\,//;
9631: }
9632:
9633: $metaentry{':keys'} = join(',',keys(%metathesekeys));
9634: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
9635: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
9636: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9637: # this is the end of "was not already recently cached
9638: }
9639: return $metaentry{':'.$what};
9640: }
9641:
9642: sub metadata_create_package_def {
9643: my ($uri,$key,$package,$metathesekeys)=@_;
9644: my ($pack,$name,$subp)=split(/\&/,$key);
9645: if ($subp eq 'default') { next; }
9646:
9647: if (defined($metaentry{':packages'})) {
9648: $metaentry{':packages'}.=','.$package;
9649: } else {
9650: $metaentry{':packages'}=$package;
9651: }
9652: my $value=$packagetab{$key};
9653: my $unikey;
9654: $unikey='parameter_0_'.$name;
9655: $metaentry{':'.$unikey.'.part'}=0;
9656: $$metathesekeys{$unikey}=1;
9657: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9658: $metaentry{':'.$unikey.'.'.$subp}=$value;
9659: }
9660: if (defined($metaentry{':'.$unikey.'.default'})) {
9661: $metaentry{':'.$unikey}=
9662: $metaentry{':'.$unikey.'.default'};
9663: }
9664: }
9665:
9666: sub metadata_generate_part0 {
9667: my ($metadata,$metacache,$uri) = @_;
9668: my %allnames;
9669: foreach my $metakey (keys(%$metadata)) {
9670: if ($metakey=~/^parameter\_(.*)/) {
9671: my $part=$$metacache{':'.$metakey.'.part'};
9672: my $name=$$metacache{':'.$metakey.'.name'};
9673: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9674: $allnames{$name}=$part;
9675: }
9676: }
9677: }
9678: foreach my $name (keys(%allnames)) {
9679: $$metadata{"parameter_0_$name"}=1;
9680: my $key=":parameter_0_$name";
9681: $$metacache{"$key.part"}='0';
9682: $$metacache{"$key.name"}=$name;
9683: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9684: $allnames{$name}.'_'.$name.
9685: '.type'};
9686: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9687: '.display'};
9688: my $expr='[Part: '.$allnames{$name}.']';
9689: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9690: $$metacache{"$key.display"}=$olddis;
9691: }
9692: }
9693:
9694: # ------------------------------------------------------ Devalidate title cache
9695:
9696: sub devalidate_title_cache {
9697: my ($url)=@_;
9698: if (!$env{'request.course.id'}) { return; }
9699: my $symb=&symbread($url);
9700: if (!$symb) { return; }
9701: my $key=$env{'request.course.id'}."\0".$symb;
9702: &devalidate_cache_new('title',$key);
9703: }
9704:
9705: # ------------------------------------------------- Get the title of a course
9706:
9707: sub current_course_title {
9708: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
9709: }
9710: # ------------------------------------------------- Get the title of a resource
9711:
9712: sub gettitle {
9713: my $urlsymb=shift;
9714: my $symb=&symbread($urlsymb);
9715: if ($symb) {
9716: my $key=$env{'request.course.id'}."\0".$symb;
9717: my ($result,$cached)=&is_cached_new('title',$key);
9718: if (defined($cached)) {
9719: return $result;
9720: }
9721: my ($map,$resid,$url)=&decode_symb($symb);
9722: my $title='';
9723: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
9724: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
9725: } else {
9726: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9727: &GDBM_READER(),0640)) {
9728: my $mapid=$bighash{'map_pc_'.&clutter($map)};
9729: $title=$bighash{'title_'.$mapid.'.'.$resid};
9730: untie(%bighash);
9731: }
9732: }
9733: $title=~s/\&colon\;/\:/gs;
9734: if ($title) {
9735: # Remember both $symb and $title for dynamic metadata
9736: $accesshash{$symb.'___crstitle'}=$title;
9737: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
9738: # Cache this title and then return it
9739: return &do_cache_new('title',$key,$title,600);
9740: }
9741: $urlsymb=$url;
9742: }
9743: my $title=&metadata($urlsymb,'title');
9744: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
9745: return $title;
9746: }
9747:
9748: sub get_slot {
9749: my ($which,$cnum,$cdom)=@_;
9750: if (!$cnum || !$cdom) {
9751: (undef,my $courseid)=&whichuser();
9752: $cdom=$env{'course.'.$courseid.'.domain'};
9753: $cnum=$env{'course.'.$courseid.'.num'};
9754: }
9755: my $key=join("\0",'slots',$cdom,$cnum,$which);
9756: my %slotinfo;
9757: if (exists($remembered{$key})) {
9758: $slotinfo{$which} = $remembered{$key};
9759: } else {
9760: %slotinfo=&get('slots',[$which],$cdom,$cnum);
9761: &Apache::lonhomework::showhash(%slotinfo);
9762: my ($tmp)=keys(%slotinfo);
9763: if ($tmp=~/^error:/) { return (); }
9764: $remembered{$key} = $slotinfo{$which};
9765: }
9766: if (ref($slotinfo{$which}) eq 'HASH') {
9767: return %{$slotinfo{$which}};
9768: }
9769: return $slotinfo{$which};
9770: }
9771:
9772: sub get_reservable_slots {
9773: my ($cnum,$cdom,$uname,$udom) = @_;
9774: my $now = time;
9775: my $reservable_info;
9776: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
9777: if (exists($remembered{$key})) {
9778: $reservable_info = $remembered{$key};
9779: } else {
9780: my %resv;
9781: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
9782: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
9783: $reservable_info = \%resv;
9784: $remembered{$key} = $reservable_info;
9785: }
9786: return $reservable_info;
9787: }
9788:
9789: sub get_course_slots {
9790: my ($cnum,$cdom) = @_;
9791: my $hashid=$cnum.':'.$cdom;
9792: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
9793: if (defined($cached)) {
9794: if (ref($result) eq 'HASH') {
9795: return %{$result};
9796: }
9797: } else {
9798: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
9799: my ($tmp) = keys(%slots);
9800: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9801: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
9802: return %slots;
9803: }
9804: }
9805: return;
9806: }
9807:
9808: sub devalidate_slots_cache {
9809: my ($cnum,$cdom)=@_;
9810: my $hashid=$cnum.':'.$cdom;
9811: &devalidate_cache_new('allslots',$hashid);
9812: }
9813:
9814: # ------------------------------------------------- Update symbolic store links
9815:
9816: sub symblist {
9817: my ($mapname,%newhash)=@_;
9818: $mapname=&deversion(&declutter($mapname));
9819: my %hash;
9820: if (($env{'request.course.fn'}) && (%newhash)) {
9821: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9822: &GDBM_WRCREAT(),0640)) {
9823: foreach my $url (keys(%newhash)) {
9824: next if ($url eq 'last_known'
9825: && $env{'form.no_update_last_known'});
9826: $hash{declutter($url)}=&encode_symb($mapname,
9827: $newhash{$url}->[1],
9828: $newhash{$url}->[0]);
9829: }
9830: if (untie(%hash)) {
9831: return 'ok';
9832: }
9833: }
9834: }
9835: return 'error';
9836: }
9837:
9838: # --------------------------------------------------------------- Verify a symb
9839:
9840: sub symbverify {
9841: my ($symb,$thisurl)=@_;
9842: my $thisfn=$thisurl;
9843: $thisfn=&declutter($thisfn);
9844: # direct jump to resource in page or to a sequence - will construct own symbs
9845: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
9846: # check URL part
9847: my ($map,$resid,$url)=&decode_symb($symb);
9848:
9849: unless ($url eq $thisfn) { return 0; }
9850:
9851: $symb=&symbclean($symb);
9852: $thisurl=&deversion($thisurl);
9853: $thisfn=&deversion($thisfn);
9854:
9855: my %bighash;
9856: my $okay=0;
9857:
9858: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9859: &GDBM_READER(),0640)) {
9860: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9861: $thisurl =~ s/\?.+$//;
9862: }
9863: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9864: unless ($ids) {
9865: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9866: $ids=$bighash{$idkey};
9867: }
9868: if ($ids) {
9869: # ------------------------------------------------------------------- Has ID(s)
9870: foreach my $id (split(/\,/,$ids)) {
9871: my ($mapid,$resid)=split(/\./,$id);
9872: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9873: $symb =~ s/\?.+$//;
9874: }
9875: if (
9876: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9877: eq $symb) {
9878: if (($env{'request.role.adv'}) ||
9879: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9880: ($thisurl eq '/adm/navmaps')) {
9881: $okay=1;
9882: }
9883: }
9884: }
9885: }
9886: untie(%bighash);
9887: }
9888: return $okay;
9889: }
9890:
9891: # --------------------------------------------------------------- Clean-up symb
9892:
9893: sub symbclean {
9894: my $symb=shift;
9895: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9896: # remove version from map
9897: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9898:
9899: # remove version from URL
9900: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9901:
9902: # remove wrapper
9903:
9904: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9905: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9906: return $symb;
9907: }
9908:
9909: # ---------------------------------------------- Split symb to find map and url
9910:
9911: sub encode_symb {
9912: my ($map,$resid,$url)=@_;
9913: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9914: }
9915:
9916: sub decode_symb {
9917: my $symb=shift;
9918: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9919: my ($map,$resid,$url)=split(/___/,$symb);
9920: return (&fixversion($map),$resid,&fixversion($url));
9921: }
9922:
9923: sub fixversion {
9924: my $fn=shift;
9925: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9926: my %bighash;
9927: my $uri=&clutter($fn);
9928: my $key=$env{'request.course.id'}.'_'.$uri;
9929: # is this cached?
9930: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9931: if (defined($cached)) { return $result; }
9932: # unfortunately not cached, or expired
9933: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9934: &GDBM_READER(),0640)) {
9935: if ($bighash{'version_'.$uri}) {
9936: my $version=$bighash{'version_'.$uri};
9937: unless (($version eq 'mostrecent') ||
9938: ($version==&getversion($uri))) {
9939: $uri=~s/\.(\w+)$/\.$version\.$1/;
9940: }
9941: }
9942: untie %bighash;
9943: }
9944: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9945: }
9946:
9947: sub deversion {
9948: my $url=shift;
9949: $url=~s/\.\d+\.(\w+)$/\.$1/;
9950: return $url;
9951: }
9952:
9953: # ------------------------------------------------------ Return symb list entry
9954:
9955: sub symbread {
9956: my ($thisfn,$donotrecurse)=@_;
9957: my $cache_str='request.symbread.cached.'.$thisfn;
9958: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9959: # no filename provided? try from environment
9960: unless ($thisfn) {
9961: if ($env{'request.symb'}) {
9962: return $env{$cache_str}=&symbclean($env{'request.symb'});
9963: }
9964: $thisfn=$env{'request.filename'};
9965: }
9966: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9967: # is that filename actually a symb? Verify, clean, and return
9968: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9969: if (&symbverify($thisfn,$1)) {
9970: return $env{$cache_str}=&symbclean($thisfn);
9971: }
9972: }
9973: $thisfn=declutter($thisfn);
9974: my %hash;
9975: my %bighash;
9976: my $syval='';
9977: if (($env{'request.course.fn'}) && ($thisfn)) {
9978: my $targetfn = $thisfn;
9979: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9980: $targetfn = 'adm/wrapper/'.$thisfn;
9981: }
9982: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9983: $targetfn=$1;
9984: }
9985: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9986: &GDBM_READER(),0640)) {
9987: $syval=$hash{$targetfn};
9988: untie(%hash);
9989: }
9990: # ---------------------------------------------------------- There was an entry
9991: if ($syval) {
9992: #unless ($syval=~/\_\d+$/) {
9993: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9994: #&appenv({'request.ambiguous' => $thisfn});
9995: #return $env{$cache_str}='';
9996: #}
9997: #$syval.=$1;
9998: #}
9999: } else {
10000: # ------------------------------------------------------- Was not in symb table
10001: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10002: &GDBM_READER(),0640)) {
10003: # ---------------------------------------------- Get ID(s) for current resource
10004: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10005: unless ($ids) {
10006: $ids=$bighash{'ids_/'.$thisfn};
10007: }
10008: unless ($ids) {
10009: # alias?
10010: $ids=$bighash{'mapalias_'.$thisfn};
10011: }
10012: if ($ids) {
10013: # ------------------------------------------------------------------- Has ID(s)
10014: my @possibilities=split(/\,/,$ids);
10015: if ($#possibilities==0) {
10016: # ----------------------------------------------- There is only one possibility
10017: my ($mapid,$resid)=split(/\./,$ids);
10018: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10019: $resid,$thisfn);
10020: } elsif (!$donotrecurse) {
10021: # ------------------------------------------ There is more than one possibility
10022: my $realpossible=0;
10023: foreach my $id (@possibilities) {
10024: my $file=$bighash{'src_'.$id};
10025: if (&allowed('bre',$file)) {
10026: my ($mapid,$resid)=split(/\./,$id);
10027: if ($bighash{'map_type_'.$mapid} ne 'page') {
10028: $realpossible++;
10029: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10030: $resid,$thisfn);
10031: }
10032: }
10033: }
10034: if ($realpossible!=1) { $syval=''; }
10035: } else {
10036: $syval='';
10037: }
10038: }
10039: untie(%bighash)
10040: }
10041: }
10042: if ($syval) {
10043: return $env{$cache_str}=$syval;
10044: }
10045: }
10046: &appenv({'request.ambiguous' => $thisfn});
10047: return $env{$cache_str}='';
10048: }
10049:
10050: # ---------------------------------------------------------- Return random seed
10051:
10052: sub numval {
10053: my $txt=shift;
10054: $txt=~tr/A-J/0-9/;
10055: $txt=~tr/a-j/0-9/;
10056: $txt=~tr/K-T/0-9/;
10057: $txt=~tr/k-t/0-9/;
10058: $txt=~tr/U-Z/0-5/;
10059: $txt=~tr/u-z/0-5/;
10060: $txt=~s/\D//g;
10061: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10062: return int($txt);
10063: }
10064:
10065: sub numval2 {
10066: my $txt=shift;
10067: $txt=~tr/A-J/0-9/;
10068: $txt=~tr/a-j/0-9/;
10069: $txt=~tr/K-T/0-9/;
10070: $txt=~tr/k-t/0-9/;
10071: $txt=~tr/U-Z/0-5/;
10072: $txt=~tr/u-z/0-5/;
10073: $txt=~s/\D//g;
10074: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10075: my $total;
10076: foreach my $val (@txts) { $total+=$val; }
10077: if ($_64bit) { if ($total > 2**32) { return -1; } }
10078: return int($total);
10079: }
10080:
10081: sub numval3 {
10082: use integer;
10083: my $txt=shift;
10084: $txt=~tr/A-J/0-9/;
10085: $txt=~tr/a-j/0-9/;
10086: $txt=~tr/K-T/0-9/;
10087: $txt=~tr/k-t/0-9/;
10088: $txt=~tr/U-Z/0-5/;
10089: $txt=~tr/u-z/0-5/;
10090: $txt=~s/\D//g;
10091: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10092: my $total;
10093: foreach my $val (@txts) { $total+=$val; }
10094: if ($_64bit) { $total=(($total<<32)>>32); }
10095: return $total;
10096: }
10097:
10098: sub digest {
10099: my ($data)=@_;
10100: my $digest=&Digest::MD5::md5($data);
10101: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10102: my ($e,$f);
10103: {
10104: use integer;
10105: $e=($a+$b);
10106: $f=($c+$d);
10107: if ($_64bit) {
10108: $e=(($e<<32)>>32);
10109: $f=(($f<<32)>>32);
10110: }
10111: }
10112: if (wantarray) {
10113: return ($e,$f);
10114: } else {
10115: my $g;
10116: {
10117: use integer;
10118: $g=($e+$f);
10119: if ($_64bit) {
10120: $g=(($g<<32)>>32);
10121: }
10122: }
10123: return $g;
10124: }
10125: }
10126:
10127: sub latest_rnd_algorithm_id {
10128: return '64bit5';
10129: }
10130:
10131: sub get_rand_alg {
10132: my ($courseid)=@_;
10133: if (!$courseid) { $courseid=(&whichuser())[1]; }
10134: if ($courseid) {
10135: return $env{"course.$courseid.rndseed"};
10136: }
10137: return &latest_rnd_algorithm_id();
10138: }
10139:
10140: sub validCODE {
10141: my ($CODE)=@_;
10142: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10143: return 0;
10144: }
10145:
10146: sub getCODE {
10147: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10148: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10149: defined($Apache::lonhomework::parsing_a_task) ) &&
10150: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10151: return $Apache::lonhomework::history{'resource.CODE'};
10152: }
10153: return undef;
10154: }
10155: #
10156: # Determines the random seed for a specific context:
10157: #
10158: # parameters:
10159: # symb - in course context the symb for the seed.
10160: # course_id - The course id of the form domain_coursenum.
10161: # domain - Domain for the user.
10162: # course - Course for the user.
10163: # cenv - environment of the course.
10164: #
10165: # NOTE:
10166: # All parameters are picked out of the environment if missing
10167: # or not defined.
10168: # If a symb cannot be determined the current time is used instead.
10169: #
10170: # For a given well defined symb, courside, domain, username,
10171: # and course environment, the seed is reproducible.
10172: #
10173: sub rndseed {
10174: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10175: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10176: if (!defined($symb)) {
10177: unless ($symb=$wsymb) { return time; }
10178: }
10179: if (!defined $courseid) {
10180: $courseid=$wcourseid;
10181: }
10182: if (!defined $domain) { $domain=$wdomain; }
10183: if (!defined $username) { $username=$wusername }
10184:
10185: my $which;
10186: if (defined($cenv->{'rndseed'})) {
10187: $which = $cenv->{'rndseed'};
10188: } else {
10189: $which =&get_rand_alg($courseid);
10190: }
10191: if (defined(&getCODE())) {
10192:
10193: if ($which eq '64bit5') {
10194: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10195: } elsif ($which eq '64bit4') {
10196: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10197: } else {
10198: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10199: }
10200: } elsif ($which eq '64bit5') {
10201: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10202: } elsif ($which eq '64bit4') {
10203: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10204: } elsif ($which eq '64bit3') {
10205: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10206: } elsif ($which eq '64bit2') {
10207: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10208: } elsif ($which eq '64bit') {
10209: return &rndseed_64bit($symb,$courseid,$domain,$username);
10210: }
10211: return &rndseed_32bit($symb,$courseid,$domain,$username);
10212: }
10213:
10214: sub rndseed_32bit {
10215: my ($symb,$courseid,$domain,$username)=@_;
10216: {
10217: use integer;
10218: my $symbchck=unpack("%32C*",$symb) << 27;
10219: my $symbseed=numval($symb) << 22;
10220: my $namechck=unpack("%32C*",$username) << 17;
10221: my $nameseed=numval($username) << 12;
10222: my $domainseed=unpack("%32C*",$domain) << 7;
10223: my $courseseed=unpack("%32C*",$courseid);
10224: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10225: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10226: #&logthis("rndseed :$num:$symb");
10227: if ($_64bit) { $num=(($num<<32)>>32); }
10228: return $num;
10229: }
10230: }
10231:
10232: sub rndseed_64bit {
10233: my ($symb,$courseid,$domain,$username)=@_;
10234: {
10235: use integer;
10236: my $symbchck=unpack("%32S*",$symb) << 21;
10237: my $symbseed=numval($symb) << 10;
10238: my $namechck=unpack("%32S*",$username);
10239:
10240: my $nameseed=numval($username) << 21;
10241: my $domainseed=unpack("%32S*",$domain) << 10;
10242: my $courseseed=unpack("%32S*",$courseid);
10243:
10244: my $num1=$symbchck+$symbseed+$namechck;
10245: my $num2=$nameseed+$domainseed+$courseseed;
10246: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10247: #&logthis("rndseed :$num:$symb");
10248: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10249: return "$num1,$num2";
10250: }
10251: }
10252:
10253: sub rndseed_64bit2 {
10254: my ($symb,$courseid,$domain,$username)=@_;
10255: {
10256: use integer;
10257: # strings need to be an even # of cahracters long, it it is odd the
10258: # last characters gets thrown away
10259: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10260: my $symbseed=numval($symb) << 10;
10261: my $namechck=unpack("%32S*",$username.' ');
10262:
10263: my $nameseed=numval($username) << 21;
10264: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10265: my $courseseed=unpack("%32S*",$courseid.' ');
10266:
10267: my $num1=$symbchck+$symbseed+$namechck;
10268: my $num2=$nameseed+$domainseed+$courseseed;
10269: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10270: #&logthis("rndseed :$num:$symb");
10271: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10272: return "$num1,$num2";
10273: }
10274: }
10275:
10276: sub rndseed_64bit3 {
10277: my ($symb,$courseid,$domain,$username)=@_;
10278: {
10279: use integer;
10280: # strings need to be an even # of cahracters long, it it is odd the
10281: # last characters gets thrown away
10282: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10283: my $symbseed=numval2($symb) << 10;
10284: my $namechck=unpack("%32S*",$username.' ');
10285:
10286: my $nameseed=numval2($username) << 21;
10287: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10288: my $courseseed=unpack("%32S*",$courseid.' ');
10289:
10290: my $num1=$symbchck+$symbseed+$namechck;
10291: my $num2=$nameseed+$domainseed+$courseseed;
10292: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10293: #&logthis("rndseed :$num1:$num2:$_64bit");
10294: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10295:
10296: return "$num1:$num2";
10297: }
10298: }
10299:
10300: sub rndseed_64bit4 {
10301: my ($symb,$courseid,$domain,$username)=@_;
10302: {
10303: use integer;
10304: # strings need to be an even # of cahracters long, it it is odd the
10305: # last characters gets thrown away
10306: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10307: my $symbseed=numval3($symb) << 10;
10308: my $namechck=unpack("%32S*",$username.' ');
10309:
10310: my $nameseed=numval3($username) << 21;
10311: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10312: my $courseseed=unpack("%32S*",$courseid.' ');
10313:
10314: my $num1=$symbchck+$symbseed+$namechck;
10315: my $num2=$nameseed+$domainseed+$courseseed;
10316: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10317: #&logthis("rndseed :$num1:$num2:$_64bit");
10318: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10319:
10320: return "$num1:$num2";
10321: }
10322: }
10323:
10324: sub rndseed_64bit5 {
10325: my ($symb,$courseid,$domain,$username)=@_;
10326: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10327: return "$num1:$num2";
10328: }
10329:
10330: sub rndseed_CODE_64bit {
10331: my ($symb,$courseid,$domain,$username)=@_;
10332: {
10333: use integer;
10334: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10335: my $symbseed=numval2($symb);
10336: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10337: my $CODEseed=numval(&getCODE());
10338: my $courseseed=unpack("%32S*",$courseid.' ');
10339: my $num1=$symbseed+$CODEchck;
10340: my $num2=$CODEseed+$courseseed+$symbchck;
10341: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10342: #&logthis("rndseed :$num1:$num2:$symb");
10343: if ($_64bit) { $num1=(($num1<<32)>>32); }
10344: if ($_64bit) { $num2=(($num2<<32)>>32); }
10345: return "$num1:$num2";
10346: }
10347: }
10348:
10349: sub rndseed_CODE_64bit4 {
10350: my ($symb,$courseid,$domain,$username)=@_;
10351: {
10352: use integer;
10353: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10354: my $symbseed=numval3($symb);
10355: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10356: my $CODEseed=numval3(&getCODE());
10357: my $courseseed=unpack("%32S*",$courseid.' ');
10358: my $num1=$symbseed+$CODEchck;
10359: my $num2=$CODEseed+$courseseed+$symbchck;
10360: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10361: #&logthis("rndseed :$num1:$num2:$symb");
10362: if ($_64bit) { $num1=(($num1<<32)>>32); }
10363: if ($_64bit) { $num2=(($num2<<32)>>32); }
10364: return "$num1:$num2";
10365: }
10366: }
10367:
10368: sub rndseed_CODE_64bit5 {
10369: my ($symb,$courseid,$domain,$username)=@_;
10370: my $code = &getCODE();
10371: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10372: return "$num1:$num2";
10373: }
10374:
10375: sub setup_random_from_rndseed {
10376: my ($rndseed)=@_;
10377: if ($rndseed =~/([,:])/) {
10378: my ($num1,$num2)=split(/[,:]/,$rndseed);
10379: &Math::Random::random_set_seed(abs($num1),abs($num2));
10380: } else {
10381: &Math::Random::random_set_seed_from_phrase($rndseed);
10382: }
10383: }
10384:
10385: sub latest_receipt_algorithm_id {
10386: return 'receipt3';
10387: }
10388:
10389: sub recunique {
10390: my $fucourseid=shift;
10391: my $unique;
10392: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10393: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10394: $unique=$env{"course.$fucourseid.internal.encseed"};
10395: } else {
10396: $unique=$perlvar{'lonReceipt'};
10397: }
10398: return unpack("%32C*",$unique);
10399: }
10400:
10401: sub recprefix {
10402: my $fucourseid=shift;
10403: my $prefix;
10404: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10405: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10406: $prefix=$env{"course.$fucourseid.internal.encpref"};
10407: } else {
10408: $prefix=$perlvar{'lonHostID'};
10409: }
10410: return unpack("%32C*",$prefix);
10411: }
10412:
10413: sub ireceipt {
10414: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10415:
10416: my $return =&recprefix($fucourseid).'-';
10417:
10418: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10419: $env{'request.state'} eq 'construct') {
10420: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10421: return $return;
10422: }
10423:
10424: my $cuname=unpack("%32C*",$funame);
10425: my $cudom=unpack("%32C*",$fudom);
10426: my $cucourseid=unpack("%32C*",$fucourseid);
10427: my $cusymb=unpack("%32C*",$fusymb);
10428: my $cunique=&recunique($fucourseid);
10429: my $cpart=unpack("%32S*",$part);
10430: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10431:
10432: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10433:
10434: $return.= ($cunique%$cuname+
10435: $cunique%$cudom+
10436: $cusymb%$cuname+
10437: $cusymb%$cudom+
10438: $cucourseid%$cuname+
10439: $cucourseid%$cudom+
10440: $cpart%$cuname+
10441: $cpart%$cudom);
10442: } else {
10443: $return.= ($cunique%$cuname+
10444: $cunique%$cudom+
10445: $cusymb%$cuname+
10446: $cusymb%$cudom+
10447: $cucourseid%$cuname+
10448: $cucourseid%$cudom);
10449: }
10450: return $return;
10451: }
10452:
10453: sub receipt {
10454: my ($part)=@_;
10455: my ($symb,$courseid,$domain,$name) = &whichuser();
10456: return &ireceipt($name,$domain,$courseid,$symb,$part);
10457: }
10458:
10459: sub whichuser {
10460: my ($passedsymb)=@_;
10461: my ($symb,$courseid,$domain,$name,$publicuser);
10462: if (defined($env{'form.grade_symb'})) {
10463: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10464: my $allowed=&allowed('vgr',$tmp_courseid);
10465: if (!$allowed &&
10466: exists($env{'request.course.sec'}) &&
10467: $env{'request.course.sec'} !~ /^\s*$/) {
10468: $allowed=&allowed('vgr',$tmp_courseid.
10469: '/'.$env{'request.course.sec'});
10470: }
10471: if ($allowed) {
10472: ($symb)=&get_env_multiple('form.grade_symb');
10473: $courseid=$tmp_courseid;
10474: ($domain)=&get_env_multiple('form.grade_domain');
10475: ($name)=&get_env_multiple('form.grade_username');
10476: return ($symb,$courseid,$domain,$name,$publicuser);
10477: }
10478: }
10479: if (!$passedsymb) {
10480: $symb=&symbread();
10481: } else {
10482: $symb=$passedsymb;
10483: }
10484: $courseid=$env{'request.course.id'};
10485: $domain=$env{'user.domain'};
10486: $name=$env{'user.name'};
10487: if ($name eq 'public' && $domain eq 'public') {
10488: if (!defined($env{'form.username'})) {
10489: $env{'form.username'}.=time.rand(10000000);
10490: }
10491: $name.=$env{'form.username'};
10492: }
10493: return ($symb,$courseid,$domain,$name,$publicuser);
10494:
10495: }
10496:
10497: # ------------------------------------------------------------ Serves up a file
10498: # returns either the contents of the file or
10499: # -1 if the file doesn't exist
10500: #
10501: # if the target is a file that was uploaded via DOCS,
10502: # a check will be made to see if a current copy exists on the local server,
10503: # if it does this will be served, otherwise a copy will be retrieved from
10504: # the home server for the course and stored in /home/httpd/html/userfiles on
10505: # the local server.
10506:
10507: sub getfile {
10508: my ($file) = @_;
10509: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10510: &repcopy($file);
10511: return &readfile($file);
10512: }
10513:
10514: sub repcopy_userfile {
10515: my ($file)=@_;
10516: my $londocroot = $perlvar{'lonDocRoot'};
10517: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10518: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10519: my ($cdom,$cnum,$filename) =
10520: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10521: my $uri="/uploaded/$cdom/$cnum/$filename";
10522: if (-e "$file") {
10523: # we already have a local copy, check it out
10524: my @fileinfo = stat($file);
10525: my $rtncode;
10526: my $info;
10527: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
10528: if ($lwpresp ne 'ok') {
10529: # there is no such file anymore, even though we had a local copy
10530: if ($rtncode eq '404') {
10531: unlink($file);
10532: }
10533: return -1;
10534: }
10535: if ($info < $fileinfo[9]) {
10536: # nice, the file we have is up-to-date, just say okay
10537: return 'ok';
10538: } else {
10539: # the file is outdated, get rid of it
10540: unlink($file);
10541: }
10542: }
10543: # one way or the other, at this point, we don't have the file
10544: # construct the correct path for the file
10545: my @parts = ($cdom,$cnum);
10546: if ($filename =~ m|^(.+)/[^/]+$|) {
10547: push @parts, split(/\//,$1);
10548: }
10549: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
10550: foreach my $part (@parts) {
10551: $path .= '/'.$part;
10552: if (!-e $path) {
10553: mkdir($path,0770);
10554: }
10555: }
10556: # now the path exists for sure
10557: # get a user agent
10558: my $ua=new LWP::UserAgent;
10559: my $transferfile=$file.'.in.transfer';
10560: # FIXME: this should flock
10561: if (-e $transferfile) { return 'ok'; }
10562: my $request;
10563: $uri=~s/^\///;
10564: my $homeserver = &homeserver($cnum,$cdom);
10565: my $protocol = $protocol{$homeserver};
10566: $protocol = 'http' if ($protocol ne 'https');
10567: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
10568: my $response=$ua->request($request,$transferfile);
10569: # did it work?
10570: if ($response->is_error()) {
10571: unlink($transferfile);
10572: &logthis("Userfile repcopy failed for $uri");
10573: return -1;
10574: }
10575: # worked, rename the transfer file
10576: rename($transferfile,$file);
10577: return 'ok';
10578: }
10579:
10580: sub tokenwrapper {
10581: my $uri=shift;
10582: $uri=~s|^https?\://([^/]+)||;
10583: $uri=~s|^/||;
10584: $env{'user.environment'}=~/\/([^\/]+)\.id/;
10585: my $token=$1;
10586: my (undef,$udom,$uname,$file)=split('/',$uri,4);
10587: if ($udom && $uname && $file) {
10588: $file=~s|(\?\.*)*$||;
10589: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
10590: my $homeserver = &homeserver($uname,$udom);
10591: my $protocol = $protocol{$homeserver};
10592: $protocol = 'http' if ($protocol ne 'https');
10593: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
10594: (($uri=~/\?/)?'&':'?').'token='.$token.
10595: '&tokenissued='.$perlvar{'lonHostID'};
10596: } else {
10597: return '/adm/notfound.html';
10598: }
10599: }
10600:
10601: # call with reqtype HEAD: get last modification time
10602: # call with reqtype GET: get the file contents
10603: # Do not call this with reqtype GET for large files! It loads everything into memory
10604: #
10605: sub getuploaded {
10606: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
10607: $uri=~s/^\///;
10608: my $homeserver = &homeserver($cnum,$cdom);
10609: my $protocol = $protocol{$homeserver};
10610: $protocol = 'http' if ($protocol ne 'https');
10611: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
10612: my $ua=new LWP::UserAgent;
10613: my $request=new HTTP::Request($reqtype,$uri);
10614: my $response=$ua->request($request);
10615: $$rtncode = $response->code;
10616: if (! $response->is_success()) {
10617: return 'failed';
10618: }
10619: if ($reqtype eq 'HEAD') {
10620: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
10621: } elsif ($reqtype eq 'GET') {
10622: $$info = $response->content;
10623: }
10624: return 'ok';
10625: }
10626:
10627: sub readfile {
10628: my $file = shift;
10629: if ( (! -e $file ) || ($file eq '') ) { return -1; };
10630: my $fh;
10631: open($fh,"<$file");
10632: my $a='';
10633: while (my $line = <$fh>) { $a .= $line; }
10634: return $a;
10635: }
10636:
10637: sub filelocation {
10638: my ($dir,$file) = @_;
10639: my $location;
10640: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
10641:
10642: if ($file =~ m-^/adm/-) {
10643: $file=~s-^/adm/wrapper/-/-;
10644: $file=~s-^/adm/coursedocs/showdoc/-/-;
10645: }
10646:
10647: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
10648: $location = $file;
10649: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
10650: my ($udom,$uname,$filename)=
10651: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
10652: my $home=&homeserver($uname,$udom);
10653: my $is_me=0;
10654: my @ids=¤t_machine_ids();
10655: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
10656: if ($is_me) {
10657: $location=propath($udom,$uname).'/userfiles/'.$filename;
10658: } else {
10659: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
10660: $udom.'/'.$uname.'/'.$filename;
10661: }
10662: } elsif ($file =~ m-^/adm/-) {
10663: $location = $perlvar{'lonDocRoot'}.'/'.$file;
10664: } else {
10665: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10666: $file=~s:^/(res|priv)/:/:;
10667: my $space=$1;
10668: if ( !( $file =~ m:^/:) ) {
10669: $location = $dir. '/'.$file;
10670: } else {
10671: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
10672: }
10673: }
10674: $location=~s://+:/:g; # remove duplicate /
10675: while ($location=~m{/\.\./}) {
10676: if ($location =~ m{/[^/]+/\.\./}) {
10677: $location=~ s{/[^/]+/\.\./}{/}g;
10678: } else {
10679: $location=~ s{/\.\./}{/}g;
10680: }
10681: } #remove dir/..
10682: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
10683: return $location;
10684: }
10685:
10686: sub hreflocation {
10687: my ($dir,$file)=@_;
10688: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
10689: $file=filelocation($dir,$file);
10690: } elsif ($file=~m-^/adm/-) {
10691: $file=~s-^/adm/wrapper/-/-;
10692: $file=~s-^/adm/coursedocs/showdoc/-/-;
10693: }
10694: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
10695: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
10696: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
10697: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
10698: {/uploaded/$1/$2/}x;
10699: }
10700: if ($file=~ m{^/userfiles/}) {
10701: $file =~ s{^/userfiles/}{/uploaded/};
10702: }
10703: return $file;
10704: }
10705:
10706:
10707:
10708:
10709:
10710: sub current_machine_domains {
10711: return &machine_domains(&hostname($perlvar{'lonHostID'}));
10712: }
10713:
10714: sub machine_domains {
10715: my ($hostname) = @_;
10716: my @domains;
10717: my %hostname = &all_hostnames();
10718: while( my($id, $name) = each(%hostname)) {
10719: # &logthis("-$id-$name-$hostname-");
10720: if ($hostname eq $name) {
10721: push(@domains,&host_domain($id));
10722: }
10723: }
10724: return @domains;
10725: }
10726:
10727: sub current_machine_ids {
10728: return &machine_ids(&hostname($perlvar{'lonHostID'}));
10729: }
10730:
10731: sub machine_ids {
10732: my ($hostname) = @_;
10733: $hostname ||= &hostname($perlvar{'lonHostID'});
10734: my @ids;
10735: my %name_to_host = &all_names();
10736: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
10737: return @{ $name_to_host{$hostname} };
10738: }
10739: return;
10740: }
10741:
10742: sub additional_machine_domains {
10743: my @domains;
10744: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
10745: while( my $line = <$fh>) {
10746: $line =~ s/\s//g;
10747: push(@domains,$line);
10748: }
10749: return @domains;
10750: }
10751:
10752: sub default_login_domain {
10753: my $domain = $perlvar{'lonDefDomain'};
10754: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
10755: foreach my $posdom (¤t_machine_domains(),
10756: &additional_machine_domains()) {
10757: if (lc($posdom) eq lc($testdomain)) {
10758: $domain=$posdom;
10759: last;
10760: }
10761: }
10762: return $domain;
10763: }
10764:
10765: # ------------------------------------------------------------- Declutters URLs
10766:
10767: sub declutter {
10768: my $thisfn=shift;
10769: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10770: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10771: $thisfn=~s/^\///;
10772: $thisfn=~s|^adm/wrapper/||;
10773: $thisfn=~s|^adm/coursedocs/showdoc/||;
10774: $thisfn=~s/^res\///;
10775: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
10776: $thisfn=~s/\?.+$//;
10777: }
10778: return $thisfn;
10779: }
10780:
10781: # ------------------------------------------------------------- Clutter up URLs
10782:
10783: sub clutter {
10784: my $thisfn='/'.&declutter(shift);
10785: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
10786: || $thisfn =~ m{^/adm/(includes|pages)} ) {
10787: $thisfn='/res'.$thisfn;
10788: }
10789: if ($thisfn !~m|^/adm|) {
10790: if ($thisfn =~ m|^/ext/|) {
10791: $thisfn='/adm/wrapper'.$thisfn;
10792: } else {
10793: my ($ext) = ($thisfn =~ /\.(\w+)$/);
10794: my $embstyle=&Apache::loncommon::fileembstyle($ext);
10795: if ($embstyle eq 'ssi'
10796: || ($embstyle eq 'hdn')
10797: || ($embstyle eq 'rat')
10798: || ($embstyle eq 'prv')
10799: || ($embstyle eq 'ign')) {
10800: #do nothing with these
10801: } elsif (($embstyle eq 'img')
10802: || ($embstyle eq 'emb')
10803: || ($embstyle eq 'wrp')) {
10804: $thisfn='/adm/wrapper'.$thisfn;
10805: } elsif ($embstyle eq 'unk'
10806: && $thisfn!~/\.(sequence|page)$/) {
10807: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
10808: } else {
10809: # &logthis("Got a blank emb style");
10810: }
10811: }
10812: }
10813: return $thisfn;
10814: }
10815:
10816: sub clutter_with_no_wrapper {
10817: my $uri = &clutter(shift);
10818: if ($uri =~ m-^/adm/-) {
10819: $uri =~ s-^/adm/wrapper/-/-;
10820: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
10821: }
10822: return $uri;
10823: }
10824:
10825: sub freeze_escape {
10826: my ($value)=@_;
10827: if (ref($value)) {
10828: $value=&nfreeze($value);
10829: return '__FROZEN__'.&escape($value);
10830: }
10831: return &escape($value);
10832: }
10833:
10834:
10835: sub thaw_unescape {
10836: my ($value)=@_;
10837: if ($value =~ /^__FROZEN__/) {
10838: substr($value,0,10,undef);
10839: $value=&unescape($value);
10840: return &thaw($value);
10841: }
10842: return &unescape($value);
10843: }
10844:
10845: sub correct_line_ends {
10846: my ($result)=@_;
10847: $$result =~s/\r\n/\n/mg;
10848: $$result =~s/\r/\n/mg;
10849: }
10850: # ================================================================ Main Program
10851:
10852: sub goodbye {
10853: &logthis("Starting Shut down");
10854: #not converted to using infrastruture and probably shouldn't be
10855: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
10856: #converted
10857: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
10858: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
10859: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
10860: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
10861: #1.1 only
10862: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
10863: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
10864: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
10865: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
10866: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
10867: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
10868: &logthis(sprintf("%-20s is %s",'hits',$hits));
10869: &flushcourselogs();
10870: &logthis("Shutting down");
10871: }
10872:
10873: sub get_dns {
10874: my ($url,$func,$ignore_cache) = @_;
10875: if (!$ignore_cache) {
10876: my ($content,$cached)=
10877: &Apache::lonnet::is_cached_new('dns',$url);
10878: if ($cached) {
10879: &$func($content);
10880: return;
10881: }
10882: }
10883:
10884: my %alldns;
10885: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10886: foreach my $dns (<$config>) {
10887: next if ($dns !~ /^\^(\S*)/x);
10888: my $line = $1;
10889: my ($host,$protocol) = split(/:/,$line);
10890: if ($protocol ne 'https') {
10891: $protocol = 'http';
10892: }
10893: $alldns{$host} = $protocol;
10894: }
10895: while (%alldns) {
10896: my ($dns) = keys(%alldns);
10897: my $ua=new LWP::UserAgent;
10898: $ua->timeout(30);
10899: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10900: my $response=$ua->request($request);
10901: delete($alldns{$dns});
10902: next if ($response->is_error());
10903: my @content = split("\n",$response->content);
10904: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10905: &$func(\@content);
10906: return;
10907: }
10908: close($config);
10909: my $which = (split('/',$url))[3];
10910: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10911: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10912: my @content = <$config>;
10913: &$func(\@content);
10914: return;
10915: }
10916: # ------------------------------------------------------------ Read domain file
10917: {
10918: my $loaded;
10919: my %domain;
10920:
10921: sub parse_domain_tab {
10922: my ($lines) = @_;
10923: foreach my $line (@$lines) {
10924: next if ($line =~ /^(\#|\s*$ )/x);
10925:
10926: chomp($line);
10927: my ($name,@elements) = split(/:/,$line,9);
10928: my %this_domain;
10929: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10930: 'lang_def', 'city', 'longi', 'lati',
10931: 'primary') {
10932: $this_domain{$field} = shift(@elements);
10933: }
10934: $domain{$name} = \%this_domain;
10935: }
10936: }
10937:
10938: sub reset_domain_info {
10939: undef($loaded);
10940: undef(%domain);
10941: }
10942:
10943: sub load_domain_tab {
10944: my ($ignore_cache) = @_;
10945: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10946: my $fh;
10947: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10948: my @lines = <$fh>;
10949: &parse_domain_tab(\@lines);
10950: }
10951: close($fh);
10952: $loaded = 1;
10953: }
10954:
10955: sub domain {
10956: &load_domain_tab() if (!$loaded);
10957:
10958: my ($name,$what) = @_;
10959: return if ( !exists($domain{$name}) );
10960:
10961: if (!$what) {
10962: return $domain{$name}{'description'};
10963: }
10964: return $domain{$name}{$what};
10965: }
10966:
10967: sub domain_info {
10968: &load_domain_tab() if (!$loaded);
10969: return %domain;
10970: }
10971:
10972: }
10973:
10974:
10975: # ------------------------------------------------------------- Read hosts file
10976: {
10977: my %hostname;
10978: my %hostdom;
10979: my %libserv;
10980: my $loaded;
10981: my %name_to_host;
10982: my %internetdom;
10983: my %LC_dns_serv;
10984:
10985: sub parse_hosts_tab {
10986: my ($file) = @_;
10987: foreach my $configline (@$file) {
10988: next if ($configline =~ /^(\#|\s*$ )/x);
10989: chomp($configline);
10990: if ($configline =~ /^\^/) {
10991: if ($configline =~ /^\^([\w.\-]+)/) {
10992: $LC_dns_serv{$1} = 1;
10993: }
10994: next;
10995: }
10996: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10997: $name=~s/\s//g;
10998: if ($id && $domain && $role && $name) {
10999: $hostname{$id}=$name;
11000: push(@{$name_to_host{$name}}, $id);
11001: $hostdom{$id}=$domain;
11002: if ($role eq 'library') { $libserv{$id}=$name; }
11003: if (defined($protocol)) {
11004: if ($protocol eq 'https') {
11005: $protocol{$id} = $protocol;
11006: } else {
11007: $protocol{$id} = 'http';
11008: }
11009: } else {
11010: $protocol{$id} = 'http';
11011: }
11012: if (defined($intdom)) {
11013: $internetdom{$id} = $intdom;
11014: }
11015: }
11016: }
11017: }
11018:
11019: sub reset_hosts_info {
11020: &purge_remembered();
11021: &reset_domain_info();
11022: &reset_hosts_ip_info();
11023: undef(%name_to_host);
11024: undef(%hostname);
11025: undef(%hostdom);
11026: undef(%libserv);
11027: undef($loaded);
11028: }
11029:
11030: sub load_hosts_tab {
11031: my ($ignore_cache) = @_;
11032: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11033: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11034: my @config = <$config>;
11035: &parse_hosts_tab(\@config);
11036: close($config);
11037: $loaded=1;
11038: }
11039:
11040: sub hostname {
11041: &load_hosts_tab() if (!$loaded);
11042:
11043: my ($lonid) = @_;
11044: return $hostname{$lonid};
11045: }
11046:
11047: sub all_hostnames {
11048: &load_hosts_tab() if (!$loaded);
11049:
11050: return %hostname;
11051: }
11052:
11053: sub all_names {
11054: &load_hosts_tab() if (!$loaded);
11055:
11056: return %name_to_host;
11057: }
11058:
11059: sub all_host_domain {
11060: &load_hosts_tab() if (!$loaded);
11061: return %hostdom;
11062: }
11063:
11064: sub is_library {
11065: &load_hosts_tab() if (!$loaded);
11066:
11067: return exists($libserv{$_[0]});
11068: }
11069:
11070: sub all_library {
11071: &load_hosts_tab() if (!$loaded);
11072:
11073: return %libserv;
11074: }
11075:
11076: sub unique_library {
11077: #2x reverse removes all hostnames that appear more than once
11078: my %unique = reverse &all_library();
11079: return reverse %unique;
11080: }
11081:
11082: sub get_servers {
11083: &load_hosts_tab() if (!$loaded);
11084:
11085: my ($domain,$type) = @_;
11086: my %possible_hosts = ($type eq 'library') ? %libserv
11087: : %hostname;
11088: my %result;
11089: if (ref($domain) eq 'ARRAY') {
11090: while ( my ($host,$hostname) = each(%possible_hosts)) {
11091: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11092: $result{$host} = $hostname;
11093: }
11094: }
11095: } else {
11096: while ( my ($host,$hostname) = each(%possible_hosts)) {
11097: if ($hostdom{$host} eq $domain) {
11098: $result{$host} = $hostname;
11099: }
11100: }
11101: }
11102: return %result;
11103: }
11104:
11105: sub get_unique_servers {
11106: my %unique = reverse &get_servers(@_);
11107: return reverse %unique;
11108: }
11109:
11110: sub host_domain {
11111: &load_hosts_tab() if (!$loaded);
11112:
11113: my ($lonid) = @_;
11114: return $hostdom{$lonid};
11115: }
11116:
11117: sub all_domains {
11118: &load_hosts_tab() if (!$loaded);
11119:
11120: my %seen;
11121: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11122: return @uniq;
11123: }
11124:
11125: sub internet_dom {
11126: &load_hosts_tab() if (!$loaded);
11127:
11128: my ($lonid) = @_;
11129: return $internetdom{$lonid};
11130: }
11131:
11132: sub is_LC_dns {
11133: &load_hosts_tab() if (!$loaded);
11134:
11135: my ($hostname) = @_;
11136: return exists($LC_dns_serv{$hostname});
11137: }
11138:
11139: }
11140:
11141: {
11142: my %iphost;
11143: my %name_to_ip;
11144: my %lonid_to_ip;
11145:
11146: sub get_hosts_from_ip {
11147: my ($ip) = @_;
11148: my %iphosts = &get_iphost();
11149: if (ref($iphosts{$ip})) {
11150: return @{$iphosts{$ip}};
11151: }
11152: return;
11153: }
11154:
11155: sub reset_hosts_ip_info {
11156: undef(%iphost);
11157: undef(%name_to_ip);
11158: undef(%lonid_to_ip);
11159: }
11160:
11161: sub get_host_ip {
11162: my ($lonid) = @_;
11163: if (exists($lonid_to_ip{$lonid})) {
11164: return $lonid_to_ip{$lonid};
11165: }
11166: my $name=&hostname($lonid);
11167: my $ip = gethostbyname($name);
11168: return if (!$ip || length($ip) ne 4);
11169: $ip=inet_ntoa($ip);
11170: $name_to_ip{$name} = $ip;
11171: $lonid_to_ip{$lonid} = $ip;
11172: return $ip;
11173: }
11174:
11175: sub get_iphost {
11176: my ($ignore_cache) = @_;
11177:
11178: if (!$ignore_cache) {
11179: if (%iphost) {
11180: return %iphost;
11181: }
11182: my ($ip_info,$cached)=
11183: &Apache::lonnet::is_cached_new('iphost','iphost');
11184: if ($cached) {
11185: %iphost = %{$ip_info->[0]};
11186: %name_to_ip = %{$ip_info->[1]};
11187: %lonid_to_ip = %{$ip_info->[2]};
11188: return %iphost;
11189: }
11190: }
11191:
11192: # get yesterday's info for fallback
11193: my %old_name_to_ip;
11194: my ($ip_info,$cached)=
11195: &Apache::lonnet::is_cached_new('iphost','iphost');
11196: if ($cached) {
11197: %old_name_to_ip = %{$ip_info->[1]};
11198: }
11199:
11200: my %name_to_host = &all_names();
11201: foreach my $name (keys(%name_to_host)) {
11202: my $ip;
11203: if (!exists($name_to_ip{$name})) {
11204: $ip = gethostbyname($name);
11205: if (!$ip || length($ip) ne 4) {
11206: if (defined($old_name_to_ip{$name})) {
11207: $ip = $old_name_to_ip{$name};
11208: &logthis("Can't find $name defaulting to old $ip");
11209: } else {
11210: &logthis("Name $name no IP found");
11211: next;
11212: }
11213: } else {
11214: $ip=inet_ntoa($ip);
11215: }
11216: $name_to_ip{$name} = $ip;
11217: } else {
11218: $ip = $name_to_ip{$name};
11219: }
11220: foreach my $id (@{ $name_to_host{$name} }) {
11221: $lonid_to_ip{$id} = $ip;
11222: }
11223: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11224: }
11225: &Apache::lonnet::do_cache_new('iphost','iphost',
11226: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11227: 48*60*60);
11228:
11229: return %iphost;
11230: }
11231:
11232: #
11233: # Given a DNS returns the loncapa host name for that DNS
11234: #
11235: sub host_from_dns {
11236: my ($dns) = @_;
11237: my @hosts;
11238: my $ip;
11239:
11240: if (exists($name_to_ip{$dns})) {
11241: $ip = $name_to_ip{$dns};
11242: }
11243: if (!$ip) {
11244: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11245: if (length($ip) == 4) {
11246: $ip = &IO::Socket::inet_ntoa($ip);
11247: }
11248: }
11249: if ($ip) {
11250: @hosts = get_hosts_from_ip($ip);
11251: return $hosts[0];
11252: }
11253: return undef;
11254: }
11255:
11256: sub get_internet_names {
11257: my ($lonid) = @_;
11258: return if ($lonid eq '');
11259: my ($idnref,$cached)=
11260: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11261: if ($cached) {
11262: return $idnref;
11263: }
11264: my $ip = &get_host_ip($lonid);
11265: my @hosts = &get_hosts_from_ip($ip);
11266: my %iphost = &get_iphost();
11267: my (@idns,%seen);
11268: foreach my $id (@hosts) {
11269: my $dom = &host_domain($id);
11270: my $prim_id = &domain($dom,'primary');
11271: my $prim_ip = &get_host_ip($prim_id);
11272: next if ($seen{$prim_ip});
11273: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11274: foreach my $id (@{$iphost{$prim_ip}}) {
11275: my $intdom = &internet_dom($id);
11276: unless (grep(/^\Q$intdom\E$/,@idns)) {
11277: push(@idns,$intdom);
11278: }
11279: }
11280: }
11281: $seen{$prim_ip} = 1;
11282: }
11283: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11284: }
11285:
11286: }
11287:
11288: sub all_loncaparevs {
11289: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11290: }
11291:
11292: BEGIN {
11293:
11294: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11295: unless ($readit) {
11296: {
11297: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11298: %perlvar = (%perlvar,%{$configvars});
11299: }
11300:
11301:
11302: # ------------------------------------------------------ Read spare server file
11303: {
11304: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11305:
11306: while (my $configline=<$config>) {
11307: chomp($configline);
11308: if ($configline) {
11309: my ($host,$type) = split(':',$configline,2);
11310: if (!defined($type) || $type eq '') { $type = 'default' };
11311: push(@{ $spareid{$type} }, $host);
11312: }
11313: }
11314: close($config);
11315: }
11316: # ------------------------------------------------------------ Read permissions
11317: {
11318: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11319:
11320: while (my $configline=<$config>) {
11321: chomp($configline);
11322: if ($configline) {
11323: my ($role,$perm)=split(/ /,$configline);
11324: if ($perm ne '') { $pr{$role}=$perm; }
11325: }
11326: }
11327: close($config);
11328: }
11329:
11330: # -------------------------------------------- Read plain texts for permissions
11331: {
11332: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11333:
11334: while (my $configline=<$config>) {
11335: chomp($configline);
11336: if ($configline) {
11337: my ($short,@plain)=split(/:/,$configline);
11338: %{$prp{$short}} = ();
11339: if (@plain > 0) {
11340: $prp{$short}{'std'} = $plain[0];
11341: for (my $i=1; $i<@plain; $i++) {
11342: $prp{$short}{'alt'.$i} = $plain[$i];
11343: }
11344: }
11345: }
11346: }
11347: close($config);
11348: }
11349:
11350: # ---------------------------------------------------------- Read package table
11351: {
11352: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11353:
11354: while (my $configline=<$config>) {
11355: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11356: chomp($configline);
11357: my ($short,$plain)=split(/:/,$configline);
11358: my ($pack,$name)=split(/\&/,$short);
11359: if ($plain ne '') {
11360: $packagetab{$pack.'&'.$name.'&name'}=$name;
11361: $packagetab{$short}=$plain;
11362: }
11363: }
11364: close($config);
11365: }
11366:
11367: # ---------------------------------------------------------- Read loncaparev table
11368: {
11369: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11370: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11371: while (my $configline=<$config>) {
11372: chomp($configline);
11373: my ($hostid,$loncaparev)=split(/:/,$configline);
11374: $loncaparevs{$hostid}=$loncaparev;
11375: }
11376: close($config);
11377: }
11378: }
11379: }
11380:
11381: # ---------------------------------------------------------- Read serverhostID table
11382: {
11383: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11384: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11385: while (my $configline=<$config>) {
11386: chomp($configline);
11387: my ($name,$id)=split(/:/,$configline);
11388: $serverhomeIDs{$name}=$id;
11389: }
11390: close($config);
11391: }
11392: }
11393: }
11394:
11395: {
11396: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11397: if (-e $file) {
11398: my $parser = HTML::LCParser->new($file);
11399: while (my $token = $parser->get_token()) {
11400: if ($token->[0] eq 'S') {
11401: my $item = $token->[1];
11402: my $name = $token->[2]{'name'};
11403: my $value = $token->[2]{'value'};
11404: if ($item ne '' && $name ne '' && $value ne '') {
11405: my $release = $parser->get_text();
11406: $release =~ s/(^\s*|\s*$ )//gx;
11407: $needsrelease{$item.':'.$name.':'.$value} = $release;
11408: }
11409: }
11410: }
11411: }
11412: }
11413:
11414: # ---------------------------------------------------------- Read managers table
11415: {
11416: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11417: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11418: while (my $configline=<$config>) {
11419: chomp($configline);
11420: next if ($configline =~ /^\#/);
11421: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11422: $managerstab{$configline} = 1;
11423: }
11424: }
11425: close($config);
11426: }
11427: }
11428: }
11429:
11430: # ------------- set up temporary directory
11431: {
11432: $tmpdir = LONCAPA::tempdir();
11433:
11434: }
11435:
11436: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11437: 'compress_threshold'=> 20_000,
11438: });
11439:
11440: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11441: $dumpcount=0;
11442: $locknum=0;
11443:
11444: &logtouch();
11445: &logthis('<font color="yellow">INFO: Read configuration</font>');
11446: $readit=1;
11447: {
11448: use integer;
11449: my $test=(2**32)+1;
11450: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11451: &logthis(" Detected 64bit platform ($_64bit)");
11452: }
11453: }
11454: }
11455:
11456: 1;
11457: __END__
11458:
11459: =pod
11460:
11461: =head1 NAME
11462:
11463: Apache::lonnet - Subroutines to ask questions about things in the network.
11464:
11465: =head1 SYNOPSIS
11466:
11467: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11468:
11469: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11470:
11471: Common parameters:
11472:
11473: =over 4
11474:
11475: =item *
11476:
11477: $uname : an internal username (if $cname expecting a course Id specifically)
11478:
11479: =item *
11480:
11481: $udom : a domain (if $cdom expecting a course's domain specifically)
11482:
11483: =item *
11484:
11485: $symb : a resource instance identifier
11486:
11487: =item *
11488:
11489: $namespace : the name of a .db file that contains the data needed or
11490: being set.
11491:
11492: =back
11493:
11494: =head1 OVERVIEW
11495:
11496: lonnet provides subroutines which interact with the
11497: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11498: about classes, users, and resources.
11499:
11500: For many of these objects you can also use this to store data about
11501: them or modify them in various ways.
11502:
11503: =head2 Symbs
11504:
11505: To identify a specific instance of a resource, LON-CAPA uses symbols
11506: or "symbs"X<symb>. These identifiers are built from the URL of the
11507: map, the resource number of the resource in the map, and the URL of
11508: the resource itself. The latter is somewhat redundant, but might help
11509: if maps change.
11510:
11511: An example is
11512:
11513: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11514:
11515: The respective map entry is
11516:
11517: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11518: title="Problem 2">
11519: </resource>
11520:
11521: Symbs are used by the random number generator, as well as to store and
11522: restore data specific to a certain instance of for example a problem.
11523:
11524: =head2 Storing And Retrieving Data
11525:
11526: X<store()>X<cstore()>X<restore()>Three of the most important functions
11527: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
11528: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
11529: is is the non-critical message twin of cstore. These functions are for
11530: handlers to store a perl hash to a user's permanent data space in an
11531: easy manner, and to retrieve it again on another call. It is expected
11532: that a handler would use this once at the beginning to retrieve data,
11533: and then again once at the end to send only the new data back.
11534:
11535: The data is stored in the user's data directory on the user's
11536: homeserver under the ID of the course.
11537:
11538: The hash that is returned by restore will have all of the previous
11539: value for all of the elements of the hash.
11540:
11541: Example:
11542:
11543: #creating a hash
11544: my %hash;
11545: $hash{'foo'}='bar';
11546:
11547: #storing it
11548: &Apache::lonnet::cstore(\%hash);
11549:
11550: #changing a value
11551: $hash{'foo'}='notbar';
11552:
11553: #adding a new value
11554: $hash{'bar'}='foo';
11555: &Apache::lonnet::cstore(\%hash);
11556:
11557: #retrieving the hash
11558: my %history=&Apache::lonnet::restore();
11559:
11560: #print the hash
11561: foreach my $key (sort(keys(%history))) {
11562: print("\%history{$key} = $history{$key}");
11563: }
11564:
11565: Will print out:
11566:
11567: %history{1:foo} = bar
11568: %history{1:keys} = foo:timestamp
11569: %history{1:timestamp} = 990455579
11570: %history{2:bar} = foo
11571: %history{2:foo} = notbar
11572: %history{2:keys} = foo:bar:timestamp
11573: %history{2:timestamp} = 990455580
11574: %history{bar} = foo
11575: %history{foo} = notbar
11576: %history{timestamp} = 990455580
11577: %history{version} = 2
11578:
11579: Note that the special hash entries C<keys>, C<version> and
11580: C<timestamp> were added to the hash. C<version> will be equal to the
11581: total number of versions of the data that have been stored. The
11582: C<timestamp> attribute will be the UNIX time the hash was
11583: stored. C<keys> is available in every historical section to list which
11584: keys were added or changed at a specific historical revision of a
11585: hash.
11586:
11587: B<Warning>: do not store the hash that restore returns directly. This
11588: will cause a mess since it will restore the historical keys as if the
11589: were new keys. I.E. 1:foo will become 1:1:foo etc.
11590:
11591: Calling convention:
11592:
11593: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
11594: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
11595:
11596: For more detailed information, see lonnet specific documentation.
11597:
11598: =head1 RETURN MESSAGES
11599:
11600: =over 4
11601:
11602: =item * B<con_lost>: unable to contact remote host
11603:
11604: =item * B<con_delayed>: unable to contact remote host, message will be delivered
11605: when the connection is brought back up
11606:
11607: =item * B<con_failed>: unable to contact remote host and unable to save message
11608: for later delivery
11609:
11610: =item * B<error:>: an error a occurred, a description of the error follows the :
11611:
11612: =item * B<no_such_host>: unable to fund a host associated with the user/domain
11613: that was requested
11614:
11615: =back
11616:
11617: =head1 PUBLIC SUBROUTINES
11618:
11619: =head2 Session Environment Functions
11620:
11621: =over 4
11622:
11623: =item *
11624: X<appenv()>
11625: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
11626: the user envirnoment file, and will be restored for each access this
11627: user makes during this session, also modifies the %env for the current
11628: process. Optional rolesarrayref - if defined contains a reference to an array
11629: of roles which are exempt from the restriction on modifying user.role entries
11630: in the user's environment.db and in %env.
11631:
11632: =item *
11633: X<delenv()>
11634: B<delenv($delthis,$regexp)>: removes all items from the session
11635: environment file that begin with $delthis. If the
11636: optional second arg - $regexp - is true, $delthis is treated as a
11637: regular expression, otherwise \Q$delthis\E is used.
11638: The values are also deleted from the current processes %env.
11639:
11640: =item * get_env_multiple($name)
11641:
11642: gets $name from the %env hash, it seemlessly handles the cases where multiple
11643: values may be defined and end up as an array ref.
11644:
11645: returns an array of values
11646:
11647: =back
11648:
11649: =head2 User Information
11650:
11651: =over 4
11652:
11653: =item *
11654: X<queryauthenticate()>
11655: B<queryauthenticate($uname,$udom)>: try to determine user's current
11656: authentication scheme
11657:
11658: =item *
11659: X<authenticate()>
11660: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
11661: authenticate user from domain's lib servers (first use the current
11662: one). C<$upass> should be the users password.
11663: $checkdefauth is optional (value is 1 if a check should be made to
11664: authenticate user using default authentication method, and allow
11665: account creation if username does not have account in the domain).
11666: $clientcancheckhost is optional (value is 1 if checking whether the
11667: server can host will occur on the client side in lonauth.pm).
11668:
11669: =item *
11670: X<homeserver()>
11671: B<homeserver($uname,$udom)>: find the server which has
11672: the user's directory and files (there must be only one), this caches
11673: the answer, and also caches if there is a borken connection.
11674:
11675: =item *
11676: X<idget()>
11677: B<idget($udom,@ids)>: find the usernames behind a list of IDs
11678: (IDs are a unique resource in a domain, there must be only 1 ID per
11679: username, and only 1 username per ID in a specific domain) (returns
11680: hash: id=>name,id=>name)
11681:
11682: =item *
11683: X<idrget()>
11684: B<idrget($udom,@unames)>: find the IDs behind a list of
11685: usernames (returns hash: name=>id,name=>id)
11686:
11687: =item *
11688: X<idput()>
11689: B<idput($udom,%ids)>: store away a list of names and associated IDs
11690:
11691: =item *
11692: X<rolesinit()>
11693: B<rolesinit($udom,$username,$authhost)>: get user privileges
11694:
11695: =item *
11696: X<getsection()>
11697: B<getsection($udom,$uname,$cname)>: finds the section of student in the
11698: course $cname, return section name/number or '' for "not in course"
11699: and '-1' for "no section"
11700:
11701: =item *
11702: X<userenvironment()>
11703: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
11704: passed in @what from the requested user's environment, returns a hash
11705:
11706: =item *
11707: X<userlog_query()>
11708: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
11709: activity.log file. %filters defines filters applied when parsing the
11710: log file. These can be start or end timestamps, or the type of action
11711: - log to look for Login or Logout events, check for Checkin or
11712: Checkout, role for role selection. The response is in the form
11713: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
11714: escaped strings of the action recorded in the activity.log file.
11715:
11716: =back
11717:
11718: =head2 User Roles
11719:
11720: =over 4
11721:
11722: =item *
11723:
11724: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
11725: F: full access
11726: U,I,K: authentication modes (cxx only)
11727: '': forbidden
11728: 1: user needs to choose course
11729: 2: browse allowed
11730: A: passphrase authentication needed
11731:
11732: =item *
11733:
11734: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
11735: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
11736: and course level
11737:
11738: =item *
11739:
11740: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
11741: (rolesplain.tab); plain text explanation of a user role term.
11742: $type is Course (default) or Community.
11743: If $forcedefault evaluates to true, text returned will be default
11744: text for $type. Otherwise, if this is a course, the text returned
11745: will be a custom name for the role (if defined in the course's
11746: environment). If no custom name is defined the default is returned.
11747:
11748: =item *
11749:
11750: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
11751: All arguments are optional. Returns a hash of a roles, either for
11752: co-author/assistant author roles for a user's Construction Space
11753: (default), or if $context is 'userroles', roles for the user himself,
11754: In the hash, keys are set to colon-separated $uname,$udom,$role, and
11755: (optionally) if $withsec is true, a fourth colon-separated item - $section.
11756: For each key, value is set to colon-separated start and end times for
11757: the role. If no username and domain are specified, will default to
11758: current user/domain. Types, roles, and roledoms are references to arrays
11759: of role statuses (active, future or previous), roles
11760: (e.g., cc,in, st etc.) and domains of the roles which can be used
11761: to restrict the list of roles reported. If no array ref is
11762: provided for types, will default to return only active roles.
11763:
11764: =back
11765:
11766: =head2 User Modification
11767:
11768: =over 4
11769:
11770: =item *
11771:
11772: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
11773: user for the level given by URL. Optional start and end dates (leave empty
11774: string or zero for "no date")
11775:
11776: =item *
11777:
11778: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
11779: change a users, password, possible return values are: ok,
11780: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
11781: refused
11782:
11783: =item *
11784:
11785: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
11786:
11787: =item *
11788:
11789: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
11790: $forceid,$desiredhome,$email,$inststatus,$candelete) :
11791:
11792: will update user information (firstname,middlename,lastname,generation,
11793: permanentemail), and if forceid is true, student/employee ID also.
11794: A user's institutional affiliation(s) can also be updated.
11795: User information fields will not be overwritten with empty entries
11796: unless the field is included in the $candelete array reference.
11797: This array is included when a single user is modified via "Manage Users",
11798: or when Autoupdate.pl is run by cron in a domain.
11799:
11800: =item *
11801:
11802: modifystudent
11803:
11804: modify a student's enrollment and identification information.
11805: The course id is resolved based on the current users environment.
11806: This means the envoking user must be a course coordinator or otherwise
11807: associated with a course.
11808:
11809: This call is essentially a wrapper for lonnet::modifyuser and
11810: lonnet::modify_student_enrollment
11811:
11812: Inputs:
11813:
11814: =over 4
11815:
11816: =item B<$udom> Student's loncapa domain
11817:
11818: =item B<$uname> Student's loncapa login name
11819:
11820: =item B<$uid> Student/Employee ID
11821:
11822: =item B<$umode> Student's authentication mode
11823:
11824: =item B<$upass> Student's password
11825:
11826: =item B<$first> Student's first name
11827:
11828: =item B<$middle> Student's middle name
11829:
11830: =item B<$last> Student's last name
11831:
11832: =item B<$gene> Student's generation
11833:
11834: =item B<$usec> Student's section in course
11835:
11836: =item B<$end> Unix time of the roles expiration
11837:
11838: =item B<$start> Unix time of the roles start date
11839:
11840: =item B<$forceid> If defined, allow $uid to be changed
11841:
11842: =item B<$desiredhome> server to use as home server for student
11843:
11844: =item B<$email> Student's permanent e-mail address
11845:
11846: =item B<$type> Type of enrollment (auto or manual)
11847:
11848: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
11849:
11850: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
11851:
11852: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
11853:
11854: =item B<$context> role change context (shown in User Management Logs display in a course)
11855:
11856: =item B<$inststatus> institutional status of user - : separated string of escaped status types
11857:
11858: =back
11859:
11860: =item *
11861:
11862: modify_student_enrollment
11863:
11864: Change a students enrollment status in a class. The environment variable
11865: 'role.request.course' must be defined for this function to proceed.
11866:
11867: Inputs:
11868:
11869: =over 4
11870:
11871: =item $udom, students domain
11872:
11873: =item $uname, students name
11874:
11875: =item $uid, students user id
11876:
11877: =item $first, students first name
11878:
11879: =item $middle
11880:
11881: =item $last
11882:
11883: =item $gene
11884:
11885: =item $usec
11886:
11887: =item $end
11888:
11889: =item $start
11890:
11891: =item $type
11892:
11893: =item $locktype
11894:
11895: =item $cid
11896:
11897: =item $selfenroll
11898:
11899: =item $context
11900:
11901: =back
11902:
11903:
11904: =item *
11905:
11906: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11907: custom role; give a custom role to a user for the level given by URL. Specify
11908: name and domain of role author, and role name
11909:
11910: =item *
11911:
11912: revokerole($udom,$uname,$url,$role) : revoke a role for url
11913:
11914: =item *
11915:
11916: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
11917:
11918: =back
11919:
11920: =head2 Course Infomation
11921:
11922: =over 4
11923:
11924: =item *
11925:
11926: coursedescription($courseid,$options) : returns a hash of information about the
11927: specified course id, including all environment settings for the
11928: course, the description of the course will be in the hash under the
11929: key 'description'
11930:
11931: $options is an optional parameter that if supplied is a hash reference that controls
11932: what how this function works. It has the following key/values:
11933:
11934: =over 4
11935:
11936: =item freshen_cache
11937:
11938: If defined, and the environment cache for the course is valid, it is
11939: returned in the returned hash.
11940:
11941: =item one_time
11942:
11943: If defined, the last cache time is set to _now_
11944:
11945: =item user
11946:
11947: If defined, the supplied username is used instead of the current user.
11948:
11949:
11950: =back
11951:
11952: =item *
11953:
11954: resdata($name,$domain,$type,@which) : request for current parameter
11955: setting for a specific $type, where $type is either 'course' or 'user',
11956: @what should be a list of parameters to ask about. This routine caches
11957: answers for 5 minutes.
11958:
11959: =item *
11960:
11961: get_courseresdata($courseid, $domain) : dump the entire course resource
11962: data base, returning a hash that is keyed by the resource name and has
11963: values that are the resource value. I believe that the timestamps and
11964: versions are also returned.
11965:
11966:
11967: =back
11968:
11969: =head2 Course Modification
11970:
11971: =over 4
11972:
11973: =item *
11974:
11975: writecoursepref($courseid,%prefs) : write preferences (environment
11976: database) for a course
11977:
11978: =item *
11979:
11980: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11981:
11982: =item *
11983:
11984: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11985:
11986: =back
11987:
11988: =head2 Resource Subroutines
11989:
11990: =over 4
11991:
11992: =item *
11993:
11994: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
11995:
11996: =item *
11997:
11998: repcopy($filename) : subscribes to the requested file, and attempts to
11999: replicate from the owning library server, Might return
12000: 'unavailable', 'not_found', 'forbidden', 'ok', or
12001: 'bad_request', also attempts to grab the metadata for the
12002: resource. Expects the local filesystem pathname
12003: (/home/httpd/html/res/....)
12004:
12005: =back
12006:
12007: =head2 Resource Information
12008:
12009: =over 4
12010:
12011: =item *
12012:
12013: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12014: a vairety of different possible values, $varname should be a request
12015: string, and the other parameters can be used to specify who and what
12016: one is asking about.
12017:
12018: Possible values for $varname are environment.lastname (or other item
12019: from the envirnment hash), user.name (or someother aspect about the
12020: user), resource.0.maxtries (or some other part and parameter of a
12021: resource)
12022:
12023: =item *
12024:
12025: directcondval($number) : get current value of a condition; reads from a state
12026: string
12027:
12028: =item *
12029:
12030: condval($condidx) : value of condition index based on state
12031:
12032: =item *
12033:
12034: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12035: resource's metadata, $what should be either a specific key, or either
12036: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12037: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12038:
12039: this function automatically caches all requests
12040:
12041: =item *
12042:
12043: metadata_query($query,$custom,$customshow) : make a metadata query against the
12044: network of library servers; returns file handle of where SQL and regex results
12045: will be stored for query
12046:
12047: =item *
12048:
12049: symbread($filename) : return symbolic list entry (filename argument optional);
12050: returns the data handle
12051:
12052: =item *
12053:
12054: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
12055: a possible symb for the URL in $thisfn, and if is an encryypted
12056: resource that the user accessed using /enc/ returns a 1 on success, 0
12057: on failure, user must be in a course, as it assumes the existance of
12058: the course initial hash, and uses $env('request.course.id'}
12059:
12060:
12061: =item *
12062:
12063: symbclean($symb) : removes versions numbers from a symb, returns the
12064: cleaned symb
12065:
12066: =item *
12067:
12068: is_on_map($uri) : checks if the $uri is somewhere on the current
12069: course map, user must be in a course for it to work.
12070:
12071: =item *
12072:
12073: numval($salt) : return random seed value (addend for rndseed)
12074:
12075: =item *
12076:
12077: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12078: a random seed, all arguments are optional, if they aren't sent it uses the
12079: environment to derive them. Note: if symb isn't sent and it can't get one
12080: from &symbread it will use the current time as its return value
12081:
12082: =item *
12083:
12084: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12085: unfakeable, receipt
12086:
12087: =item *
12088:
12089: receipt() : API to ireceipt working off of env values; given out to users
12090:
12091: =item *
12092:
12093: countacc($url) : count the number of accesses to a given URL
12094:
12095: =item *
12096:
12097: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12098:
12099: =item *
12100:
12101: checkin($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 $tcrsid)
12102:
12103: =item *
12104:
12105: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12106:
12107: =item *
12108:
12109: devalidate($symb) : devalidate temporary spreadsheet calculations,
12110: forcing spreadsheet to reevaluate the resource scores next time.
12111:
12112: =back
12113:
12114: =head2 Storing/Retreiving Data
12115:
12116: =over 4
12117:
12118: =item *
12119:
12120: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12121: for this url; hashref needs to be given and should be a \%hashname; the
12122: remaining args aren't required and if they aren't passed or are '' they will
12123: be derived from the env
12124:
12125: =item *
12126:
12127: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12128: uses critical subroutine
12129:
12130: =item *
12131:
12132: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12133: all args are optional
12134:
12135: =item *
12136:
12137: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12138: dumps the complete (or key matching regexp) namespace into a hash
12139: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12140: normally &store()ed into
12141:
12142: $range should be either an integer '100' (give me the first 100
12143: matching records)
12144: or be two integers sperated by a - with no spaces
12145: '30-50' (give me the 30th through the 50th matching
12146: records)
12147:
12148:
12149: =item *
12150:
12151: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12152: replaces a &store() version of data with a replacement set of data
12153: for a particular resource in a namespace passed in the $storehash hash
12154: reference
12155:
12156: =item *
12157:
12158: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12159: works very similar to store/cstore, but all data is stored in a
12160: temporary location and can be reset using tmpreset, $storehash should
12161: be a hash reference, returns nothing on success
12162:
12163: =item *
12164:
12165: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12166: similar to restore, but all data is stored in a temporary location and
12167: can be reset using tmpreset. Returns a hash of values on success,
12168: error string otherwise.
12169:
12170: =item *
12171:
12172: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12173: deltes all keys for $symb form the temporary storage hash.
12174:
12175: =item *
12176:
12177: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12178: reference filled in from namesp ($udom and $uname are optional)
12179:
12180: =item *
12181:
12182: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12183: namesp ($udom and $uname are optional)
12184:
12185: =item *
12186:
12187: dump($namespace,$udom,$uname,$regexp,$range) :
12188: dumps the complete (or key matching regexp) namespace into a hash
12189: ($udom, $uname, $regexp, $range are optional)
12190:
12191: $range should be either an integer '100' (give me the first 100
12192: matching records)
12193: or be two integers sperated by a - with no spaces
12194: '30-50' (give me the 30th through the 50th matching
12195: records)
12196: =item *
12197:
12198: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12199: $store can be a scalar, an array reference, or if the amount to be
12200: incremented is > 1, a hash reference.
12201:
12202: ($udom and $uname are optional)
12203:
12204: =item *
12205:
12206: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12207: ($udom and $uname are optional)
12208:
12209: =item *
12210:
12211: cput($namespace,$storehash,$udom,$uname) : critical put
12212: ($udom and $uname are optional)
12213:
12214: =item *
12215:
12216: newput($namespace,$storehash,$udom,$uname) :
12217:
12218: Attempts to store the items in the $storehash, but only if they don't
12219: currently exist, if this succeeds you can be certain that you have
12220: successfully created a new key value pair in the $namespace db.
12221:
12222:
12223: Args:
12224: $namespace: name of database to store values to
12225: $storehash: hashref to store to the db
12226: $udom: (optional) domain of user containing the db
12227: $uname: (optional) name of user caontaining the db
12228:
12229: Returns:
12230: 'ok' -> succeeded in storing all keys of $storehash
12231: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12232: least <key> already existed in the db (other
12233: requested keys may also already exist)
12234: 'error: <msg>' -> unable to tie the DB or other error occurred
12235: 'con_lost' -> unable to contact request server
12236: 'refused' -> action was not allowed by remote machine
12237:
12238:
12239: =item *
12240:
12241: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12242: reference filled in from namesp (encrypts the return communication)
12243: ($udom and $uname are optional)
12244:
12245: =item *
12246:
12247: log($udom,$name,$home,$message) : write to permanent log for user; use
12248: critical subroutine
12249:
12250: =item *
12251:
12252: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12253: array reference filled in from namespace found in domain level on either
12254: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12255:
12256: =item *
12257:
12258: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12259: domain level either on specified domain server ($uhome) or primary domain
12260: server ($udom and $uhome are optional)
12261:
12262: =item *
12263:
12264: get_domain_defaults($target_domain) : returns hash with defaults for
12265: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12266: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12267: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12268: Values are retrieved from cache (if current), or from domain's configuration.db
12269: (if available), or lastly from values in lonTabs/dns_domain,tab,
12270: or lonTabs/domain.tab.
12271:
12272: %domdefaults = &get_auth_defaults($target_domain);
12273:
12274: =back
12275:
12276: =head2 Network Status Functions
12277:
12278: =over 4
12279:
12280: =item *
12281:
12282: dirlist() : return directory list based on URI (first arg).
12283:
12284: Inputs: 1 required, 5 optional.
12285:
12286: =over
12287:
12288: =item
12289: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12290:
12291: =item
12292: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12293:
12294: =item
12295: $username - username of user/course to be listed. Extracted from $uri if absent.
12296:
12297: =item
12298: $getpropath - boolean: 1 if prepend path using &propath().
12299:
12300: =item
12301: $getuserdir - boolean: 1 if prepend path for "userfiles".
12302:
12303: =item
12304: $alternateRoot - path to prepend in place of path from $uri.
12305:
12306: =back
12307:
12308: Returns: Array of up to two items.
12309:
12310: =over
12311:
12312: a reference to an array of files/subdirectories
12313:
12314: =over
12315:
12316: Each element in the array of files/subdirectories is a & separated list of
12317: item name and the result of running stat on the item. If dirlist was requested
12318: for a file instead of a directory, the item name will be ''. For a directory
12319: listing, if the item is a metadata file, the element will end &N&M
12320: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12321: default copyright set (1).
12322:
12323: =back
12324:
12325: a scalar containing error condition (if encountered).
12326:
12327: =over
12328:
12329: =item
12330: no_host (no homeserver identified for $username:$domain).
12331:
12332: =item
12333: no_such_host (server contacted for listing not identified as valid host).
12334:
12335: =item
12336: con_lost (connection to remote server failed).
12337:
12338: =item
12339: refused (invalid $username:$domain received on lond side).
12340:
12341: =item
12342: no_such_dir (directory at specified path on lond side does not exist).
12343:
12344: =item
12345: empty (directory at specified path on lond side is empty).
12346:
12347: =over
12348:
12349: This is currently not encountered because the &ls3, &ls2,
12350: &ls (_handler) routines on the lond side do not filter out
12351: . and .. from a directory listing.
12352:
12353: =back
12354:
12355: =back
12356:
12357: =back
12358:
12359: =item *
12360:
12361: spareserver() : find server with least workload from spare.tab
12362:
12363:
12364: =item *
12365:
12366: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12367: if there is no corresponding loncapa host.
12368:
12369: =back
12370:
12371:
12372: =head2 Apache Request
12373:
12374: =over 4
12375:
12376: =item *
12377:
12378: ssi($url,%hash) : server side include, does a complete request cycle on url to
12379: localhost, posts hash
12380:
12381: =back
12382:
12383: =head2 Data to String to Data
12384:
12385: =over 4
12386:
12387: =item *
12388:
12389: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12390: and '&' separators, supports elements that are arrayrefs and hashrefs
12391:
12392: =item *
12393:
12394: hashref2str($hashref) : convert a hashref into a string complete with
12395: escaping and '=' and '&' separators, supports elements that are
12396: arrayrefs and hashrefs
12397:
12398: =item *
12399:
12400: arrayref2str($arrayref) : convert an arrayref into a string complete
12401: with escaping and '&' separators, supports elements that are arrayrefs
12402: and hashrefs
12403:
12404: =item *
12405:
12406: str2hash($string) : convert string to hash using unescaping and
12407: splitting on '=' and '&', supports elements that are arrayrefs and
12408: hashrefs
12409:
12410: =item *
12411:
12412: str2array($string) : convert string to hash using unescaping and
12413: splitting on '&', supports elements that are arrayrefs and hashrefs
12414:
12415: =back
12416:
12417: =head2 Logging Routines
12418:
12419:
12420: These routines allow one to make log messages in the lonnet.log and
12421: lonnet.perm logfiles.
12422:
12423: =over 4
12424:
12425: =item *
12426:
12427: logtouch() : make sure the logfile, lonnet.log, exists
12428:
12429: =item *
12430:
12431: logthis() : append message to the normal lonnet.log file, it gets
12432: preiodically rolled over and deleted.
12433:
12434: =item *
12435:
12436: logperm() : append a permanent message to lonnet.perm.log, this log
12437: file never gets deleted by any automated portion of the system, only
12438: messages of critical importance should go in here.
12439:
12440:
12441: =back
12442:
12443: =head2 General File Helper Routines
12444:
12445: =over 4
12446:
12447: =item *
12448:
12449: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
12450: (a) files in /uploaded
12451: (i) If a local copy of the file exists -
12452: compares modification date of local copy with last-modified date for
12453: definitive version stored on home server for course. If local copy is
12454: stale, requests a new version from the home server and stores it.
12455: If the original has been removed from the home server, then local copy
12456: is unlinked.
12457: (ii) If local copy does not exist -
12458: requests the file from the home server and stores it.
12459:
12460: If $caller is 'uploadrep':
12461: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
12462: for request for files originally uploaded via DOCS.
12463: - returns 'ok' if fresh local copy now available, -1 otherwise.
12464:
12465: Otherwise:
12466: This indicates a call from the content generation phase of the request.
12467: - returns the entire contents of the file or -1.
12468:
12469: (b) files in /res
12470: - returns the entire contents of a file or -1;
12471: it properly subscribes to and replicates the file if neccessary.
12472:
12473:
12474: =item *
12475:
12476: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
12477: reference
12478:
12479: returns either a stat() list of data about the file or an empty list
12480: if the file doesn't exist or couldn't find out about it (connection
12481: problems or user unknown)
12482:
12483: =item *
12484:
12485: filelocation($dir,$file) : returns file system location of a file
12486: based on URI; meant to be "fairly clean" absolute reference, $dir is a
12487: directory that relative $file lookups are to looked in ($dir of /a/dir
12488: and a file of ../bob will become /a/bob)
12489:
12490: =item *
12491:
12492: hreflocation($dir,$file) : returns file system location or a URL; same as
12493: filelocation except for hrefs
12494:
12495: =item *
12496:
12497: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
12498:
12499: =back
12500:
12501: =head2 Usererfile file routines (/uploaded*)
12502:
12503: =over 4
12504:
12505: =item *
12506:
12507: userfileupload(): main rotine for putting a file in a user or course's
12508: filespace, arguments are,
12509:
12510: formname - required - this is the name of the element in $env where the
12511: filename, and the contents of the file to create/modifed exist
12512: the filename is in $env{'form.'.$formname.'.filename'} and the
12513: contents of the file is located in $env{'form.'.$formname}
12514: context - if coursedoc, store the file in the course of the active role
12515: of the current user;
12516: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
12517: if 'canceloverwrite': delete file in tmp/overwrites directory
12518: subdir - required - subdirectory to put the file in under ../userfiles/
12519: if undefined, it will be placed in "unknown"
12520:
12521: (This routine calls clean_filename() to remove any dangerous
12522: characters from the filename, and then calls finuserfileupload() to
12523: complete the transaction)
12524:
12525: returns either the url of the uploaded file (/uploaded/....) if successful
12526: and /adm/notfound.html if unsuccessful
12527:
12528: =item *
12529:
12530: clean_filename(): routine for cleaing a filename up for storage in
12531: userfile space, argument is:
12532:
12533: filename - proposed filename
12534:
12535: returns: the new clean filename
12536:
12537: =item *
12538:
12539: finishuserfileupload(): routine that creates and sends the file to
12540: userspace, probably shouldn't be called directly
12541:
12542: docuname: username or courseid of destination for the file
12543: docudom: domain of user/course of destination for the file
12544: formname: same as for userfileupload()
12545: fname: filename (including subdirectories) for the file
12546: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
12547: allfiles: reference to hash used to store objects found by parser
12548: codebase: reference to hash used for codebases of java objects found by parser
12549: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
12550: thumbheight: height (pixels) of thumbnail to be created for uploaded image
12551: resizewidth: width to be used to resize image using resizeImage from ImageMagick
12552: resizeheight: height to be used to resize image using resizeImage from ImageMagick
12553: context: if 'overwrite', will move the uploaded file from its temporary location to
12554: userfiles to facilitate overwriting a previously uploaded file with same name.
12555: mimetype: reference to scalar to accommodate mime type determined
12556: from File::MMagic if $parser = parse.
12557:
12558: returns either the url of the uploaded file (/uploaded/....) if successful
12559: and /adm/notfound.html if unsuccessful (or an error message if context
12560: was 'overwrite').
12561:
12562:
12563: =item *
12564:
12565: renameuserfile(): renames an existing userfile to a new name
12566:
12567: Args:
12568: docuname: username or courseid of destination for the file
12569: docudom: domain of user/course of destination for the file
12570: old: current file name (including any subdirs under userfiles)
12571: new: desired file name (including any subdirs under userfiles)
12572:
12573: =item *
12574:
12575: mkdiruserfile(): creates a directory is a userfiles dir
12576:
12577: Args:
12578: docuname: username or courseid of destination for the file
12579: docudom: domain of user/course of destination for the file
12580: dir: dir to create (including any subdirs under userfiles)
12581:
12582: =item *
12583:
12584: removeuserfile(): removes a file that exists in userfiles
12585:
12586: Args:
12587: docuname: username or courseid of destination for the file
12588: docudom: domain of user/course of destination for the file
12589: fname: filname to delete (including any subdirs under userfiles)
12590:
12591: =item *
12592:
12593: removeuploadedurl(): convience function for removeuserfile()
12594:
12595: Args:
12596: url: a full /uploaded/... url to delete
12597:
12598: =item *
12599:
12600: get_portfile_permissions():
12601: Args:
12602: domain: domain of user or course contain the portfolio files
12603: user: name of user or num of course contain the portfolio files
12604: Returns:
12605: hashref of a dump of the proper file_permissions.db
12606:
12607:
12608: =item *
12609:
12610: get_access_controls():
12611:
12612: Args:
12613: current_permissions: the hash ref returned from get_portfile_permissions()
12614: group: (optional) the group you want the files associated with
12615: file: (optional) the file you want access info on
12616:
12617: Returns:
12618: a hash (keys are file names) of hashes containing
12619: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
12620: values are XML containing access control settings (see below)
12621:
12622: Internal notes:
12623:
12624: access controls are stored in file_permissions.db as key=value pairs.
12625: key -> path to file/file_name\0uniqueID:scope_end_start
12626: where scope -> public,guest,course,group,domains or users.
12627: end -> UNIX time for end of access (0 -> no end date)
12628: start -> UNIX time for start of access
12629:
12630: value -> XML description of access control
12631: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
12632: <start></start>
12633: <end></end>
12634:
12635: <password></password> for scope type = guest
12636:
12637: <domain></domain> for scope type = course or group
12638: <number></number>
12639: <roles id="">
12640: <role></role>
12641: <access></access>
12642: <section></section>
12643: <group></group>
12644: </roles>
12645:
12646: <dom></dom> for scope type = domains
12647:
12648: <users> for scope type = users
12649: <user>
12650: <uname></uname>
12651: <udom></udom>
12652: </user>
12653: </users>
12654: </scope>
12655:
12656: Access data is also aggregated for each file in an additional key=value pair:
12657: key -> path to file/file_name\0accesscontrol
12658: value -> reference to hash
12659: hash contains key = value pairs
12660: where key = uniqueID:scope_end_start
12661: value = UNIX time record was last updated
12662:
12663: Used to improve speed of look-ups of access controls for each file.
12664:
12665: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
12666:
12667: modify_access_controls():
12668:
12669: Modifies access controls for a portfolio file
12670: Args
12671: 1. file name
12672: 2. reference to hash of required changes,
12673: 3. domain
12674: 4. username
12675: where domain,username are the domain of the portfolio owner
12676: (either a user or a course)
12677:
12678: Returns:
12679: 1. result of additions or updates ('ok' or 'error', with error message).
12680: 2. result of deletions ('ok' or 'error', with error message).
12681: 3. reference to hash of any new or updated access controls.
12682: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
12683: key = integer (inbound ID)
12684: value = uniqueID
12685:
12686: =back
12687:
12688: =head2 HTTP Helper Routines
12689:
12690: =over 4
12691:
12692: =item *
12693:
12694: escape() : unpack non-word characters into CGI-compatible hex codes
12695:
12696: =item *
12697:
12698: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
12699:
12700: =back
12701:
12702: =head1 PRIVATE SUBROUTINES
12703:
12704: =head2 Underlying communication routines (Shouldn't call)
12705:
12706: =over 4
12707:
12708: =item *
12709:
12710: subreply() : tries to pass a message to lonc, returns con_lost if incapable
12711:
12712: =item *
12713:
12714: reply() : uses subreply to send a message to remote machine, logs all failures
12715:
12716: =item *
12717:
12718: critical() : passes a critical message to another server; if cannot
12719: get through then place message in connection buffer directory and
12720: returns con_delayed, if incapable of saving message, returns
12721: con_failed
12722:
12723: =item *
12724:
12725: reconlonc() : tries to reconnect lonc client processes.
12726:
12727: =back
12728:
12729: =head2 Resource Access Logging
12730:
12731: =over 4
12732:
12733: =item *
12734:
12735: flushcourselogs() : flush (save) buffer logs and access logs
12736:
12737: =item *
12738:
12739: courselog($what) : save message for course in hash
12740:
12741: =item *
12742:
12743: courseacclog($what) : save message for course using &courselog(). Perform
12744: special processing for specific resource types (problems, exams, quizzes, etc).
12745:
12746: =item *
12747:
12748: goodbye() : flush course logs and log shutting down; it is called in srm.conf
12749: as a PerlChildExitHandler
12750:
12751: =back
12752:
12753: =head2 Other
12754:
12755: =over 4
12756:
12757: =item *
12758:
12759: symblist($mapname,%newhash) : update symbolic storage links
12760:
12761: =back
12762:
12763: =cut
12764:
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