File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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1.1104:
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Thu Feb 24 23:55:58 2011 UTC (13 years, 4 months ago) by
raeburn
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CVS tags:
HEAD
- Bug 5932. Roles Screen usability improvements
- New arg for &delenv() - $roles (array ref) contains roles for which
roles or privs may be deleted (similar to second arg in &appenv().
- Change to &get_my_roles() to allow filtering for gr 'roles'.
- &role_status() -change name of second arg to $update to reflect fact
that determination of status based on last update time, not log-in time.
- New routine: &get_groups_roles() - contains code previously in &role_status
to determine course roles for group members needing privs
- moved to facilitate reuse by lonroles::update_sesion_roles().
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1104 2011/02/24 23:55:58 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:
81: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
82: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
83: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
84: %courseownerbuf, %coursetypebuf,$locknum);
85:
86: use IO::Socket;
87: use GDBM_File;
88: use HTML::LCParser;
89: use Fcntl qw(:flock);
90: use Storable qw(thaw nfreeze);
91: use Time::HiRes qw( gettimeofday tv_interval );
92: use Cache::Memcached;
93: use Digest::MD5;
94: use Math::Random;
95: use File::MMagic;
96: use LONCAPA qw(:DEFAULT :match);
97: use LONCAPA::Configuration;
98: use File::Copy;
99:
100: my $readit;
101: my $max_connection_retries = 10; # Or some such value.
102:
103: require Exporter;
104:
105: our @ISA = qw (Exporter);
106: our @EXPORT = qw(%env);
107:
108:
109: # --------------------------------------------------------------------- Logging
110: {
111: my $logid;
112: sub instructor_log {
113: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
114: if (($cnum eq '') || ($cdom eq '')) {
115: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
116: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
117: }
118: $logid++;
119: my $now = time();
120: my $id=$now.'00000'.$$.'00000'.$logid;
121: return &Apache::lonnet::put('nohist_'.$hash_name,
122: { $id => {
123: 'exe_uname' => $env{'user.name'},
124: 'exe_udom' => $env{'user.domain'},
125: 'exe_time' => $now,
126: 'exe_ip' => $ENV{'REMOTE_ADDR'},
127: 'delflag' => $delflag,
128: 'logentry' => $storehash,
129: 'uname' => $uname,
130: 'udom' => $udom,
131: }
132: },$cdom,$cnum);
133: }
134: }
135:
136: sub logtouch {
137: my $execdir=$perlvar{'lonDaemons'};
138: unless (-e "$execdir/logs/lonnet.log") {
139: open(my $fh,">>$execdir/logs/lonnet.log");
140: close $fh;
141: }
142: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
143: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
144: }
145:
146: sub logthis {
147: my $message=shift;
148: my $execdir=$perlvar{'lonDaemons'};
149: my $now=time;
150: my $local=localtime($now);
151: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
152: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
153: print $fh $logstring;
154: close($fh);
155: }
156: return 1;
157: }
158:
159: sub logperm {
160: my $message=shift;
161: my $execdir=$perlvar{'lonDaemons'};
162: my $now=time;
163: my $local=localtime($now);
164: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
165: print $fh "$now:$message:$local\n";
166: close($fh);
167: }
168: return 1;
169: }
170:
171: sub create_connection {
172: my ($hostname,$lonid) = @_;
173: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
174: Type => SOCK_STREAM,
175: Timeout => 10);
176: return 0 if (!$client);
177: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
178: my $result = <$client>;
179: chomp($result);
180: return 1 if ($result eq 'done');
181: return 0;
182: }
183:
184: sub get_server_timezone {
185: my ($cnum,$cdom) = @_;
186: my $home=&homeserver($cnum,$cdom);
187: if ($home ne 'no_host') {
188: my $cachetime = 24*3600;
189: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
190: if (defined($cached)) {
191: return $timezone;
192: } else {
193: my $timezone = &reply('servertimezone',$home);
194: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
195: }
196: }
197: }
198:
199: sub get_server_loncaparev {
200: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
201: if (defined($lonhost)) {
202: if (!defined(&hostname($lonhost))) {
203: undef($lonhost);
204: }
205: }
206: if (!defined($lonhost)) {
207: if (defined(&domain($dom,'primary'))) {
208: $lonhost=&domain($dom,'primary');
209: if ($lonhost eq 'no_host') {
210: undef($lonhost);
211: }
212: }
213: }
214: if (defined($lonhost)) {
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
218: if (defined($cached)) {
219: return $loncaparev;
220: }
221: }
222: my ($answer,$loncaparev);
223: my @ids=¤t_machine_ids();
224: if (grep(/^\Q$lonhost\E$/,@ids)) {
225: $answer = $perlvar{'lonVersion'};
226: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
227: $loncaparev = $1;
228: }
229: } else {
230: $answer = &reply('serverloncaparev',$lonhost);
231: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
232: if ($caller eq 'loncron') {
233: my $ua=new LWP::UserAgent;
234: $ua->timeout(4);
235: my $protocol = $protocol{$lonhost};
236: $protocol = 'http' if ($protocol ne 'https');
237: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
238: my $request=new HTTP::Request('GET',$url);
239: my $response=$ua->request($request);
240: unless ($response->is_error()) {
241: my $content = $response->content;
242: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
243: $loncaparev = $1;
244: }
245: }
246: } else {
247: $loncaparev = $loncaparevs{$lonhost};
248: }
249: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
250: $loncaparev = $1;
251: }
252: }
253: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
254: }
255: }
256:
257: sub get_server_homeID {
258: my ($hostname,$ignore_cache,$caller) = @_;
259: unless ($ignore_cache) {
260: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
261: if (defined($cached)) {
262: return $serverhomeID;
263: }
264: }
265: my $cachetime = 12*3600;
266: my $serverhomeID;
267: if ($caller eq 'loncron') {
268: my @machine_ids = &machine_ids($hostname);
269: foreach my $id (@machine_ids) {
270: my $response = &reply('serverhomeID',$id);
271: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
272: $serverhomeID = $response;
273: last;
274: }
275: }
276: if ($serverhomeID eq '') {
277: $serverhomeID = $machine_ids[-1];
278: }
279: } else {
280: $serverhomeID = $serverhomeIDs{$hostname};
281: }
282: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
283: }
284:
285: # -------------------------------------------------- Non-critical communication
286: sub subreply {
287: my ($cmd,$server)=@_;
288: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
289: #
290: # With loncnew process trimming, there's a timing hole between lonc server
291: # process exit and the master server picking up the listen on the AF_UNIX
292: # socket. In that time interval, a lock file will exist:
293:
294: my $lockfile=$peerfile.".lock";
295: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
296: sleep(1);
297: }
298: # At this point, either a loncnew parent is listening or an old lonc
299: # or loncnew child is listening so we can connect or everything's dead.
300: #
301: # We'll give the connection a few tries before abandoning it. If
302: # connection is not possible, we'll con_lost back to the client.
303: #
304: my $client;
305: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
306: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
307: Type => SOCK_STREAM,
308: Timeout => 10);
309: if ($client) {
310: last; # Connected!
311: } else {
312: &create_connection(&hostname($server),$server);
313: }
314: sleep(1); # Try again later if failed connection.
315: }
316: my $answer;
317: if ($client) {
318: print $client "sethost:$server:$cmd\n";
319: $answer=<$client>;
320: if (!$answer) { $answer="con_lost"; }
321: chomp($answer);
322: } else {
323: $answer = 'con_lost'; # Failed connection.
324: }
325: return $answer;
326: }
327:
328: sub reply {
329: my ($cmd,$server)=@_;
330: unless (defined(&hostname($server))) { return 'no_such_host'; }
331: my $answer=subreply($cmd,$server);
332: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
333: &logthis("<font color=\"blue\">WARNING:".
334: " $cmd to $server returned $answer</font>");
335: }
336: return $answer;
337: }
338:
339: # ----------------------------------------------------------- Send USR1 to lonc
340:
341: sub reconlonc {
342: my ($lonid) = @_;
343: my $hostname = &hostname($lonid);
344: if ($lonid) {
345: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
346: if ($hostname && -e $peerfile) {
347: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
348: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
349: Type => SOCK_STREAM,
350: Timeout => 10);
351: if ($client) {
352: print $client ("reset_retries\n");
353: my $answer=<$client>;
354: #reset just this one.
355: }
356: }
357: return;
358: }
359:
360: &logthis("Trying to reconnect lonc");
361: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
362: if (open(my $fh,"<$loncfile")) {
363: my $loncpid=<$fh>;
364: chomp($loncpid);
365: if (kill 0 => $loncpid) {
366: &logthis("lonc at pid $loncpid responding, sending USR1");
367: kill USR1 => $loncpid;
368: sleep 1;
369: } else {
370: &logthis(
371: "<font color=\"blue\">WARNING:".
372: " lonc at pid $loncpid not responding, giving up</font>");
373: }
374: } else {
375: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
376: }
377: }
378:
379: # ------------------------------------------------------ Critical communication
380:
381: sub critical {
382: my ($cmd,$server)=@_;
383: unless (&hostname($server)) {
384: &logthis("<font color=\"blue\">WARNING:".
385: " Critical message to unknown server ($server)</font>");
386: return 'no_such_host';
387: }
388: my $answer=reply($cmd,$server);
389: if ($answer eq 'con_lost') {
390: &reconlonc("$perlvar{'lonSockDir'}/$server");
391: my $answer=reply($cmd,$server);
392: if ($answer eq 'con_lost') {
393: my $now=time;
394: my $middlename=$cmd;
395: $middlename=substr($middlename,0,16);
396: $middlename=~s/\W//g;
397: my $dfilename=
398: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
399: $dumpcount++;
400: {
401: my $dfh;
402: if (open($dfh,">$dfilename")) {
403: print $dfh "$cmd\n";
404: close($dfh);
405: }
406: }
407: sleep 2;
408: my $wcmd='';
409: {
410: my $dfh;
411: if (open($dfh,"<$dfilename")) {
412: $wcmd=<$dfh>;
413: close($dfh);
414: }
415: }
416: chomp($wcmd);
417: if ($wcmd eq $cmd) {
418: &logthis("<font color=\"blue\">WARNING: ".
419: "Connection buffer $dfilename: $cmd</font>");
420: &logperm("D:$server:$cmd");
421: return 'con_delayed';
422: } else {
423: &logthis("<font color=\"red\">CRITICAL:"
424: ." Critical connection failed: $server $cmd</font>");
425: &logperm("F:$server:$cmd");
426: return 'con_failed';
427: }
428: }
429: }
430: return $answer;
431: }
432:
433: # ------------------------------------------- check if return value is an error
434:
435: sub error {
436: my ($result) = @_;
437: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
438: if ($2 == 2) { return undef; }
439: return $1;
440: }
441: return undef;
442: }
443:
444: sub convert_and_load_session_env {
445: my ($lonidsdir,$handle)=@_;
446: my @profile;
447: {
448: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
449: if (!$opened) {
450: return 0;
451: }
452: flock($idf,LOCK_SH);
453: @profile=<$idf>;
454: close($idf);
455: }
456: my %temp_env;
457: foreach my $line (@profile) {
458: if ($line !~ m/=/) {
459: return 0;
460: }
461: chomp($line);
462: my ($envname,$envvalue)=split(/=/,$line,2);
463: $temp_env{&unescape($envname)} = &unescape($envvalue);
464: }
465: unlink("$lonidsdir/$handle.id");
466: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
467: 0640)) {
468: %disk_env = %temp_env;
469: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
470: untie(%disk_env);
471: }
472: return 1;
473: }
474:
475: # ------------------------------------------- Transfer profile into environment
476: my $env_loaded;
477: sub transfer_profile_to_env {
478: my ($lonidsdir,$handle,$force_transfer) = @_;
479: if (!$force_transfer && $env_loaded) { return; }
480:
481: if (!defined($lonidsdir)) {
482: $lonidsdir = $perlvar{'lonIDsDir'};
483: }
484: if (!defined($handle)) {
485: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
486: }
487:
488: my $convert;
489: {
490: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
491: if (!$opened) {
492: return;
493: }
494: flock($idf,LOCK_SH);
495: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
496: &GDBM_READER(),0640)) {
497: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
498: untie(%disk_env);
499: } else {
500: $convert = 1;
501: }
502: }
503: if ($convert) {
504: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
505: &logthis("Failed to load session, or convert session.");
506: }
507: }
508:
509: my %remove;
510: while ( my $envname = each(%env) ) {
511: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
512: if ($time < time-300) {
513: $remove{$key}++;
514: }
515: }
516: }
517:
518: $env{'user.environment'} = "$lonidsdir/$handle.id";
519: $env_loaded=1;
520: foreach my $expired_key (keys(%remove)) {
521: &delenv($expired_key);
522: }
523: }
524:
525: # ---------------------------------------------------- Check for valid session
526: sub check_for_valid_session {
527: my ($r) = @_;
528: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
529: my $lonid=$cookies{'lonID'};
530: return undef if (!$lonid);
531:
532: my $handle=&LONCAPA::clean_handle($lonid->value);
533: my $lonidsdir=$r->dir_config('lonIDsDir');
534: return undef if (!-e "$lonidsdir/$handle.id");
535:
536: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
537: return undef if (!$opened);
538:
539: flock($idf,LOCK_SH);
540: my %disk_env;
541: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
542: &GDBM_READER(),0640)) {
543: return undef;
544: }
545:
546: if (!defined($disk_env{'user.name'})
547: || !defined($disk_env{'user.domain'})) {
548: return undef;
549: }
550: return $handle;
551: }
552:
553: sub timed_flock {
554: my ($file,$lock_type) = @_;
555: my $failed=0;
556: eval {
557: local $SIG{__DIE__}='DEFAULT';
558: local $SIG{ALRM}=sub {
559: $failed=1;
560: die("failed lock");
561: };
562: alarm(13);
563: flock($file,$lock_type);
564: alarm(0);
565: };
566: if ($failed) {
567: return undef;
568: } else {
569: return 1;
570: }
571: }
572:
573: # ---------------------------------------------------------- Append Environment
574:
575: sub appenv {
576: my ($newenv,$roles) = @_;
577: if (ref($newenv) eq 'HASH') {
578: foreach my $key (keys(%{$newenv})) {
579: my $refused = 0;
580: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
581: $refused = 1;
582: if (ref($roles) eq 'ARRAY') {
583: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
584: if (grep(/^\Q$role\E$/,@{$roles})) {
585: $refused = 0;
586: }
587: }
588: }
589: if ($refused) {
590: &logthis("<font color=\"blue\">WARNING: ".
591: "Attempt to modify environment ".$key." to ".$newenv->{$key}
592: .'</font>');
593: delete($newenv->{$key});
594: } else {
595: $env{$key}=$newenv->{$key};
596: }
597: }
598: my $opened = open(my $env_file,'+<',$env{'user.environment'});
599: if ($opened
600: && &timed_flock($env_file,LOCK_EX)
601: &&
602: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
603: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
604: while (my ($key,$value) = each(%{$newenv})) {
605: $disk_env{$key} = $value;
606: }
607: untie(%disk_env);
608: }
609: }
610: return 'ok';
611: }
612: # ----------------------------------------------------- Delete from Environment
613:
614: sub delenv {
615: my ($delthis,$regexp,$roles) = @_;
616: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
617: my $refused = 1;
618: if (ref($roles) eq 'ARRAY') {
619: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
620: if (grep(/^\Q$role\E$/,@{$roles})) {
621: $refused = 0;
622: }
623: }
624: if ($refused) {
625: &logthis("<font color=\"blue\">WARNING: ".
626: "Attempt to delete from environment ".$delthis);
627: return 'error';
628: }
629: }
630: my $opened = open(my $env_file,'+<',$env{'user.environment'});
631: if ($opened
632: && &timed_flock($env_file,LOCK_EX)
633: &&
634: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
635: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
636: foreach my $key (keys(%disk_env)) {
637: if ($regexp) {
638: if ($key=~/^$delthis/) {
639: delete($env{$key});
640: delete($disk_env{$key});
641: }
642: } else {
643: if ($key=~/^\Q$delthis\E/) {
644: delete($env{$key});
645: delete($disk_env{$key});
646: }
647: }
648: }
649: untie(%disk_env);
650: }
651: return 'ok';
652: }
653:
654: sub get_env_multiple {
655: my ($name) = @_;
656: my @values;
657: if (defined($env{$name})) {
658: # exists is it an array
659: if (ref($env{$name})) {
660: @values=@{ $env{$name} };
661: } else {
662: $values[0]=$env{$name};
663: }
664: }
665: return(@values);
666: }
667:
668: # ------------------------------------------------------------------- Locking
669:
670: sub set_lock {
671: my ($text)=@_;
672: $locknum++;
673: my $id=$$.'-'.$locknum;
674: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
675: 'session.lock.'.$id => $text});
676: return $id;
677: }
678:
679: sub get_locks {
680: my $num=0;
681: my %texts=();
682: foreach my $lock (split(/\,/,$env{'session.locks'})) {
683: if ($lock=~/\w/) {
684: $num++;
685: $texts{$lock}=$env{'session.lock.'.$lock};
686: }
687: }
688: return ($num,%texts);
689: }
690:
691: sub remove_lock {
692: my ($id)=@_;
693: my $newlocks='';
694: foreach my $lock (split(/\,/,$env{'session.locks'})) {
695: if (($lock=~/\w/) && ($lock ne $id)) {
696: $newlocks.=','.$lock;
697: }
698: }
699: &appenv({'session.locks' => $newlocks});
700: &delenv('session.lock.'.$id);
701: }
702:
703: sub remove_all_locks {
704: my $activelocks=$env{'session.locks'};
705: foreach my $lock (split(/\,/,$env{'session.locks'})) {
706: if ($lock=~/\w/) {
707: &remove_lock($lock);
708: }
709: }
710: }
711:
712:
713: # ------------------------------------------ Find out current server userload
714: sub userload {
715: my $numusers=0;
716: {
717: opendir(LONIDS,$perlvar{'lonIDsDir'});
718: my $filename;
719: my $curtime=time;
720: while ($filename=readdir(LONIDS)) {
721: next if ($filename eq '.' || $filename eq '..');
722: next if ($filename =~ /publicuser_\d+\.id/);
723: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
724: if ($curtime-$mtime < 1800) { $numusers++; }
725: }
726: closedir(LONIDS);
727: }
728: my $userloadpercent=0;
729: my $maxuserload=$perlvar{'lonUserLoadLim'};
730: if ($maxuserload) {
731: $userloadpercent=100*$numusers/$maxuserload;
732: }
733: $userloadpercent=sprintf("%.2f",$userloadpercent);
734: return $userloadpercent;
735: }
736:
737: # ------------------------------ Find server with least workload from spare.tab
738:
739: sub spareserver {
740: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
741: my $spare_server;
742: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
743: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
744: : $userloadpercent;
745: my ($uint_dom,$remotesessions);
746: if (($udom ne '') && (&domain($udom) ne '')) {
747: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
748: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
749: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
750: $remotesessions = $udomdefaults{'remotesessions'};
751: }
752: foreach my $try_server (@{ $spareid{'primary'} }) {
753: if ($uint_dom) {
754: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
755: $try_server));
756: }
757: ($spare_server, $lowest_load) =
758: &compare_server_load($try_server, $spare_server, $lowest_load);
759: }
760:
761: my $found_server = ($spare_server ne '' && $lowest_load < 100);
762:
763: if (!$found_server) {
764: foreach my $try_server (@{ $spareid{'default'} }) {
765: if ($uint_dom) {
766: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
767: $try_server));
768: }
769: ($spare_server, $lowest_load) =
770: &compare_server_load($try_server, $spare_server, $lowest_load);
771: }
772: }
773:
774: if (!$want_server_name) {
775: my $protocol = 'http';
776: if ($protocol{$spare_server} eq 'https') {
777: $protocol = $protocol{$spare_server};
778: }
779: if (defined($spare_server)) {
780: my $hostname = &hostname($spare_server);
781: if (defined($hostname)) {
782: $spare_server = $protocol.'://'.$hostname;
783: }
784: }
785: }
786: return $spare_server;
787: }
788:
789: sub compare_server_load {
790: my ($try_server, $spare_server, $lowest_load) = @_;
791:
792: my $loadans = &reply('load', $try_server);
793: my $userloadans = &reply('userload',$try_server);
794:
795: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
796: return; #didn't get a number from the server
797: }
798:
799: my $load;
800: if ($loadans =~ /\d/) {
801: if ($userloadans =~ /\d/) {
802: #both are numbers, pick the bigger one
803: $load = ($loadans > $userloadans) ? $loadans
804: : $userloadans;
805: } else {
806: $load = $loadans;
807: }
808: } else {
809: $load = $userloadans;
810: }
811:
812: if (($load =~ /\d/) && ($load < $lowest_load)) {
813: $spare_server = $try_server;
814: $lowest_load = $load;
815: }
816: return ($spare_server,$lowest_load);
817: }
818:
819: # --------------------------- ask offload servers if user already has a session
820: sub find_existing_session {
821: my ($udom,$uname) = @_;
822: foreach my $try_server (@{ $spareid{'primary'} },
823: @{ $spareid{'default'} }) {
824: return $try_server if (&has_user_session($try_server, $udom, $uname));
825: }
826: return;
827: }
828:
829: # -------------------------------- ask if server already has a session for user
830: sub has_user_session {
831: my ($lonid,$udom,$uname) = @_;
832: my $result = &reply(join(':','userhassession',
833: map {&escape($_)} ($udom,$uname)),$lonid);
834: return 1 if ($result eq 'ok');
835:
836: return 0;
837: }
838:
839: # --------- determine least loaded server in a user's domain which allows login
840:
841: sub choose_server {
842: my ($udom) = @_;
843: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
844: my %servers = &get_servers($udom);
845: my $lowest_load = 30000;
846: my ($login_host,$hostname);
847: foreach my $lonhost (keys(%servers)) {
848: my $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
849: if ($loginvia eq '') {
850: ($login_host, $lowest_load) =
851: &compare_server_load($lonhost, $login_host, $lowest_load);
852: }
853: }
854: if ($login_host ne '') {
855: $hostname = $servers{$login_host};
856: }
857: return ($login_host,$hostname);
858: }
859:
860: # --------------------------------------------- Try to change a user's password
861:
862: sub changepass {
863: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
864: $currentpass = &escape($currentpass);
865: $newpass = &escape($newpass);
866: my $lonhost = $perlvar{'lonHostID'};
867: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
868: $server);
869: if (! $answer) {
870: &logthis("No reply on password change request to $server ".
871: "by $uname in domain $udom.");
872: } elsif ($answer =~ "^ok") {
873: &logthis("$uname in $udom successfully changed their password ".
874: "on $server.");
875: } elsif ($answer =~ "^pwchange_failure") {
876: &logthis("$uname in $udom was unable to change their password ".
877: "on $server. The action was blocked by either lcpasswd ".
878: "or pwchange");
879: } elsif ($answer =~ "^non_authorized") {
880: &logthis("$uname in $udom did not get their password correct when ".
881: "attempting to change it on $server.");
882: } elsif ($answer =~ "^auth_mode_error") {
883: &logthis("$uname in $udom attempted to change their password despite ".
884: "not being locally or internally authenticated on $server.");
885: } elsif ($answer =~ "^unknown_user") {
886: &logthis("$uname in $udom attempted to change their password ".
887: "on $server but were unable to because $server is not ".
888: "their home server.");
889: } elsif ($answer =~ "^refused") {
890: &logthis("$server refused to change $uname in $udom password because ".
891: "it was sent an unencrypted request to change the password.");
892: } elsif ($answer =~ "invalid_client") {
893: &logthis("$server refused to change $uname in $udom password because ".
894: "it was a reset by e-mail originating from an invalid server.");
895: }
896: return $answer;
897: }
898:
899: # ----------------------- Try to determine user's current authentication scheme
900:
901: sub queryauthenticate {
902: my ($uname,$udom)=@_;
903: my $uhome=&homeserver($uname,$udom);
904: if (!$uhome) {
905: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
906: return 'no_host';
907: }
908: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
909: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
910: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
911: }
912: return $answer;
913: }
914:
915: # --------- Try to authenticate user from domain's lib servers (first this one)
916:
917: sub authenticate {
918: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
919: $upass=&escape($upass);
920: $uname= &LONCAPA::clean_username($uname);
921: my $uhome=&homeserver($uname,$udom,1);
922: my $newhome;
923: if ((!$uhome) || ($uhome eq 'no_host')) {
924: # Maybe the machine was offline and only re-appeared again recently?
925: &reconlonc();
926: # One more
927: $uhome=&homeserver($uname,$udom,1);
928: if (($uhome eq 'no_host') && $checkdefauth) {
929: if (defined(&domain($udom,'primary'))) {
930: $newhome=&domain($udom,'primary');
931: }
932: if ($newhome ne '') {
933: $uhome = $newhome;
934: }
935: }
936: if ((!$uhome) || ($uhome eq 'no_host')) {
937: &logthis("User $uname at $udom is unknown in authenticate");
938: return 'no_host';
939: }
940: }
941: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
942: if ($answer eq 'authorized') {
943: if ($newhome) {
944: &logthis("User $uname at $udom authorized by $uhome, but needs account");
945: return 'no_account_on_host';
946: } else {
947: &logthis("User $uname at $udom authorized by $uhome");
948: return $uhome;
949: }
950: }
951: if ($answer eq 'non_authorized') {
952: &logthis("User $uname at $udom rejected by $uhome");
953: return 'no_host';
954: }
955: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
956: return 'no_host';
957: }
958:
959: sub can_host_session {
960: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
961: my $canhost = 1;
962: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
963: if (ref($remotesessions) eq 'HASH') {
964: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
965: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
966: $canhost = 0;
967: } else {
968: $canhost = 1;
969: }
970: }
971: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
972: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
973: $canhost = 1;
974: } else {
975: $canhost = 0;
976: }
977: }
978: if ($canhost) {
979: if ($remotesessions->{'version'} ne '') {
980: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
981: if ($reqmajor ne '' && $reqminor ne '') {
982: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
983: my $major = $1;
984: my $minor = $2;
985: if (($major < $reqmajor ) ||
986: (($major == $reqmajor) && ($minor < $reqminor))) {
987: $canhost = 0;
988: }
989: } else {
990: $canhost = 0;
991: }
992: }
993: }
994: }
995: }
996: if ($canhost) {
997: if (ref($hostedsessions) eq 'HASH') {
998: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
999: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'excludedomain'}})) {
1000: $canhost = 0;
1001: } else {
1002: $canhost = 1;
1003: }
1004: }
1005: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1006: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'includedomain'}})) {
1007: $canhost = 1;
1008: } else {
1009: $canhost = 0;
1010: }
1011: }
1012: }
1013: }
1014: return $canhost;
1015: }
1016:
1017: sub spare_can_host {
1018: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1019: my $canhost=1;
1020: my @intdoms;
1021: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1022: if (ref($internet_names) eq 'ARRAY') {
1023: @intdoms = @{$internet_names};
1024: }
1025: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1026: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1027: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1028: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1029: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1030: $canhost = &can_host_session($udom,$try_server,$remoterev,
1031: $remotesessions,
1032: $defdomdefaults{'hostedsessions'});
1033: }
1034: return $canhost;
1035: }
1036:
1037: # ---------------------- Find the homebase for a user from domain's lib servers
1038:
1039: my %homecache;
1040: sub homeserver {
1041: my ($uname,$udom,$ignoreBadCache)=@_;
1042: my $index="$uname:$udom";
1043:
1044: if (exists($homecache{$index})) { return $homecache{$index}; }
1045:
1046: my %servers = &get_servers($udom,'library');
1047: foreach my $tryserver (keys(%servers)) {
1048: next if ($ignoreBadCache ne 'true' &&
1049: exists($badServerCache{$tryserver}));
1050:
1051: my $answer=reply("home:$udom:$uname",$tryserver);
1052: if ($answer eq 'found') {
1053: delete($badServerCache{$tryserver});
1054: return $homecache{$index}=$tryserver;
1055: } elsif ($answer eq 'no_host') {
1056: $badServerCache{$tryserver}=1;
1057: }
1058: }
1059: return 'no_host';
1060: }
1061:
1062: # ------------------------------------- Find the usernames behind a list of IDs
1063:
1064: sub idget {
1065: my ($udom,@ids)=@_;
1066: my %returnhash=();
1067:
1068: my %servers = &get_servers($udom,'library');
1069: foreach my $tryserver (keys(%servers)) {
1070: my $idlist=join('&',@ids);
1071: $idlist=~tr/A-Z/a-z/;
1072: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1073: my @answer=();
1074: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1075: @answer=split(/\&/,$reply);
1076: } ;
1077: my $i;
1078: for ($i=0;$i<=$#ids;$i++) {
1079: if ($answer[$i]) {
1080: $returnhash{$ids[$i]}=$answer[$i];
1081: }
1082: }
1083: }
1084: return %returnhash;
1085: }
1086:
1087: # ------------------------------------- Find the IDs behind a list of usernames
1088:
1089: sub idrget {
1090: my ($udom,@unames)=@_;
1091: my %returnhash=();
1092: foreach my $uname (@unames) {
1093: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1094: }
1095: return %returnhash;
1096: }
1097:
1098: # ------------------------------- Store away a list of names and associated IDs
1099:
1100: sub idput {
1101: my ($udom,%ids)=@_;
1102: my %servers=();
1103: foreach my $uname (keys(%ids)) {
1104: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1105: my $uhom=&homeserver($uname,$udom);
1106: if ($uhom ne 'no_host') {
1107: my $id=&escape($ids{$uname});
1108: $id=~tr/A-Z/a-z/;
1109: my $esc_unam=&escape($uname);
1110: if ($servers{$uhom}) {
1111: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1112: } else {
1113: $servers{$uhom}=$id.'='.$esc_unam;
1114: }
1115: }
1116: }
1117: foreach my $server (keys(%servers)) {
1118: &critical('idput:'.$udom.':'.$servers{$server},$server);
1119: }
1120: }
1121:
1122: # ------------------------------dump from db file owned by domainconfig user
1123: sub dump_dom {
1124: my ($namespace,$udom,$regexp,$range)=@_;
1125: if (!$udom) {
1126: $udom=$env{'user.domain'};
1127: }
1128: my %returnhash;
1129: if ($udom) {
1130: my $uname = &get_domainconfiguser($udom);
1131: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1132: }
1133: return %returnhash;
1134: }
1135:
1136: # ------------------------------------------ get items from domain db files
1137:
1138: sub get_dom {
1139: my ($namespace,$storearr,$udom,$uhome)=@_;
1140: my $items='';
1141: foreach my $item (@$storearr) {
1142: $items.=&escape($item).'&';
1143: }
1144: $items=~s/\&$//;
1145: if (!$udom) {
1146: $udom=$env{'user.domain'};
1147: if (defined(&domain($udom,'primary'))) {
1148: $uhome=&domain($udom,'primary');
1149: } else {
1150: undef($uhome);
1151: }
1152: } else {
1153: if (!$uhome) {
1154: if (defined(&domain($udom,'primary'))) {
1155: $uhome=&domain($udom,'primary');
1156: }
1157: }
1158: }
1159: if ($udom && $uhome && ($uhome ne 'no_host')) {
1160: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1161: my %returnhash;
1162: if ($rep eq '' || $rep =~ /^error: 2 /) {
1163: return %returnhash;
1164: }
1165: my @pairs=split(/\&/,$rep);
1166: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1167: return @pairs;
1168: }
1169: my $i=0;
1170: foreach my $item (@$storearr) {
1171: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1172: $i++;
1173: }
1174: return %returnhash;
1175: } else {
1176: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1177: }
1178: }
1179:
1180: # -------------------------------------------- put items in domain db files
1181:
1182: sub put_dom {
1183: my ($namespace,$storehash,$udom,$uhome)=@_;
1184: if (!$udom) {
1185: $udom=$env{'user.domain'};
1186: if (defined(&domain($udom,'primary'))) {
1187: $uhome=&domain($udom,'primary');
1188: } else {
1189: undef($uhome);
1190: }
1191: } else {
1192: if (!$uhome) {
1193: if (defined(&domain($udom,'primary'))) {
1194: $uhome=&domain($udom,'primary');
1195: }
1196: }
1197: }
1198: if ($udom && $uhome && ($uhome ne 'no_host')) {
1199: my $items='';
1200: foreach my $item (keys(%$storehash)) {
1201: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1202: }
1203: $items=~s/\&$//;
1204: return &reply("putdom:$udom:$namespace:$items",$uhome);
1205: } else {
1206: &logthis("put_dom failed - no homeserver and/or domain");
1207: }
1208: }
1209:
1210: # --------------------- newput for items in db file owned by domainconfig user
1211: sub newput_dom {
1212: my ($namespace,$storehash,$udom) = @_;
1213: my $result;
1214: if (!$udom) {
1215: $udom=$env{'user.domain'};
1216: }
1217: if ($udom) {
1218: my $uname = &get_domainconfiguser($udom);
1219: $result = &newput($namespace,$storehash,$udom,$uname);
1220: }
1221: return $result;
1222: }
1223:
1224: # --------------------- delete for items in db file owned by domainconfig user
1225: sub del_dom {
1226: my ($namespace,$storearr,$udom)=@_;
1227: if (ref($storearr) eq 'ARRAY') {
1228: if (!$udom) {
1229: $udom=$env{'user.domain'};
1230: }
1231: if ($udom) {
1232: my $uname = &get_domainconfiguser($udom);
1233: return &del($namespace,$storearr,$udom,$uname);
1234: }
1235: }
1236: }
1237:
1238: # ----------------------------------construct domainconfig user for a domain
1239: sub get_domainconfiguser {
1240: my ($udom) = @_;
1241: return $udom.'-domainconfig';
1242: }
1243:
1244: sub retrieve_inst_usertypes {
1245: my ($udom) = @_;
1246: my (%returnhash,@order);
1247: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1248: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1249: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1250: %returnhash = %{$domdefs{'inststatustypes'}};
1251: @order = @{$domdefs{'inststatusorder'}};
1252: } else {
1253: if (defined(&domain($udom,'primary'))) {
1254: my $uhome=&domain($udom,'primary');
1255: my $rep=&reply("inst_usertypes:$udom",$uhome);
1256: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1257: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1258: return (\%returnhash,\@order);
1259: }
1260: my ($hashitems,$orderitems) = split(/:/,$rep);
1261: my @pairs=split(/\&/,$hashitems);
1262: foreach my $item (@pairs) {
1263: my ($key,$value)=split(/=/,$item,2);
1264: $key = &unescape($key);
1265: next if ($key =~ /^error: 2 /);
1266: $returnhash{$key}=&thaw_unescape($value);
1267: }
1268: my @esc_order = split(/\&/,$orderitems);
1269: foreach my $item (@esc_order) {
1270: push(@order,&unescape($item));
1271: }
1272: } else {
1273: &logthis("get_dom failed - no primary domain server for $udom");
1274: }
1275: }
1276: return (\%returnhash,\@order);
1277: }
1278:
1279: sub is_domainimage {
1280: my ($url) = @_;
1281: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1282: if (&domain($1) ne '') {
1283: return '1';
1284: }
1285: }
1286: return;
1287: }
1288:
1289: sub inst_directory_query {
1290: my ($srch) = @_;
1291: my $udom = $srch->{'srchdomain'};
1292: my %results;
1293: my $homeserver = &domain($udom,'primary');
1294: my $outcome;
1295: if ($homeserver ne '') {
1296: my $queryid=&reply("querysend:instdirsearch:".
1297: &escape($srch->{'srchby'}).':'.
1298: &escape($srch->{'srchterm'}).':'.
1299: &escape($srch->{'srchtype'}),$homeserver);
1300: my $host=&hostname($homeserver);
1301: if ($queryid !~/^\Q$host\E\_/) {
1302: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1303: return;
1304: }
1305: my $response = &get_query_reply($queryid);
1306: my $maxtries = 5;
1307: my $tries = 1;
1308: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1309: $response = &get_query_reply($queryid);
1310: $tries ++;
1311: }
1312:
1313: if (!&error($response) && $response ne 'refused') {
1314: if ($response eq 'unavailable') {
1315: $outcome = $response;
1316: } else {
1317: $outcome = 'ok';
1318: my @matches = split(/\n/,$response);
1319: foreach my $match (@matches) {
1320: my ($key,$value) = split(/=/,$match);
1321: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1322: }
1323: }
1324: }
1325: }
1326: return ($outcome,%results);
1327: }
1328:
1329: sub usersearch {
1330: my ($srch) = @_;
1331: my $dom = $srch->{'srchdomain'};
1332: my %results;
1333: my %libserv = &all_library();
1334: my $query = 'usersearch';
1335: foreach my $tryserver (keys(%libserv)) {
1336: if (&host_domain($tryserver) eq $dom) {
1337: my $host=&hostname($tryserver);
1338: my $queryid=
1339: &reply("querysend:".&escape($query).':'.
1340: &escape($srch->{'srchby'}).':'.
1341: &escape($srch->{'srchtype'}).':'.
1342: &escape($srch->{'srchterm'}),$tryserver);
1343: if ($queryid !~/^\Q$host\E\_/) {
1344: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1345: next;
1346: }
1347: my $reply = &get_query_reply($queryid);
1348: my $maxtries = 1;
1349: my $tries = 1;
1350: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1351: $reply = &get_query_reply($queryid);
1352: $tries ++;
1353: }
1354: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1355: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1356: } else {
1357: my @matches;
1358: if ($reply =~ /\n/) {
1359: @matches = split(/\n/,$reply);
1360: } else {
1361: @matches = split(/\&/,$reply);
1362: }
1363: foreach my $match (@matches) {
1364: my ($uname,$udom,%userhash);
1365: foreach my $entry (split(/:/,$match)) {
1366: my ($key,$value) =
1367: map {&unescape($_);} split(/=/,$entry);
1368: $userhash{$key} = $value;
1369: if ($key eq 'username') {
1370: $uname = $value;
1371: } elsif ($key eq 'domain') {
1372: $udom = $value;
1373: }
1374: }
1375: $results{$uname.':'.$udom} = \%userhash;
1376: }
1377: }
1378: }
1379: }
1380: return %results;
1381: }
1382:
1383: sub get_instuser {
1384: my ($udom,$uname,$id) = @_;
1385: my $homeserver = &domain($udom,'primary');
1386: my ($outcome,%results);
1387: if ($homeserver ne '') {
1388: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1389: &escape($id).':'.&escape($udom),$homeserver);
1390: my $host=&hostname($homeserver);
1391: if ($queryid !~/^\Q$host\E\_/) {
1392: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1393: return;
1394: }
1395: my $response = &get_query_reply($queryid);
1396: my $maxtries = 5;
1397: my $tries = 1;
1398: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1399: $response = &get_query_reply($queryid);
1400: $tries ++;
1401: }
1402: if (!&error($response) && $response ne 'refused') {
1403: if ($response eq 'unavailable') {
1404: $outcome = $response;
1405: } else {
1406: $outcome = 'ok';
1407: my @matches = split(/\n/,$response);
1408: foreach my $match (@matches) {
1409: my ($key,$value) = split(/=/,$match);
1410: $results{&unescape($key)} = &thaw_unescape($value);
1411: }
1412: }
1413: }
1414: }
1415: my %userinfo;
1416: if (ref($results{$uname}) eq 'HASH') {
1417: %userinfo = %{$results{$uname}};
1418: }
1419: return ($outcome,%userinfo);
1420: }
1421:
1422: sub inst_rulecheck {
1423: my ($udom,$uname,$id,$item,$rules) = @_;
1424: my %returnhash;
1425: if ($udom ne '') {
1426: if (ref($rules) eq 'ARRAY') {
1427: @{$rules} = map {&escape($_);} (@{$rules});
1428: my $rulestr = join(':',@{$rules});
1429: my $homeserver=&domain($udom,'primary');
1430: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1431: my $response;
1432: if ($item eq 'username') {
1433: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1434: ':'.&escape($uname).':'.$rulestr,
1435: $homeserver));
1436: } elsif ($item eq 'id') {
1437: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1438: ':'.&escape($id).':'.$rulestr,
1439: $homeserver));
1440: } elsif ($item eq 'selfcreate') {
1441: $response=&unescape(&reply('instselfcreatecheck:'.
1442: &escape($udom).':'.&escape($uname).
1443: ':'.$rulestr,$homeserver));
1444: }
1445: if ($response ne 'refused') {
1446: my @pairs=split(/\&/,$response);
1447: foreach my $item (@pairs) {
1448: my ($key,$value)=split(/=/,$item,2);
1449: $key = &unescape($key);
1450: next if ($key =~ /^error: 2 /);
1451: $returnhash{$key}=&thaw_unescape($value);
1452: }
1453: }
1454: }
1455: }
1456: }
1457: return %returnhash;
1458: }
1459:
1460: sub inst_userrules {
1461: my ($udom,$check) = @_;
1462: my (%ruleshash,@ruleorder);
1463: if ($udom ne '') {
1464: my $homeserver=&domain($udom,'primary');
1465: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1466: my $response;
1467: if ($check eq 'id') {
1468: $response=&reply('instidrules:'.&escape($udom),
1469: $homeserver);
1470: } elsif ($check eq 'email') {
1471: $response=&reply('instemailrules:'.&escape($udom),
1472: $homeserver);
1473: } else {
1474: $response=&reply('instuserrules:'.&escape($udom),
1475: $homeserver);
1476: }
1477: if (($response ne 'refused') && ($response ne 'error') &&
1478: ($response ne 'unknown_cmd') &&
1479: ($response ne 'no_such_host')) {
1480: my ($hashitems,$orderitems) = split(/:/,$response);
1481: my @pairs=split(/\&/,$hashitems);
1482: foreach my $item (@pairs) {
1483: my ($key,$value)=split(/=/,$item,2);
1484: $key = &unescape($key);
1485: next if ($key =~ /^error: 2 /);
1486: $ruleshash{$key}=&thaw_unescape($value);
1487: }
1488: my @esc_order = split(/\&/,$orderitems);
1489: foreach my $item (@esc_order) {
1490: push(@ruleorder,&unescape($item));
1491: }
1492: }
1493: }
1494: }
1495: return (\%ruleshash,\@ruleorder);
1496: }
1497:
1498: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1499:
1500: sub get_domain_defaults {
1501: my ($domain) = @_;
1502: my $cachetime = 60*60*24;
1503: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1504: if (defined($cached)) {
1505: if (ref($result) eq 'HASH') {
1506: return %{$result};
1507: }
1508: }
1509: my %domdefaults;
1510: my %domconfig =
1511: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1512: 'requestcourses','inststatus',
1513: 'coursedefaults','usersessions'],$domain);
1514: if (ref($domconfig{'defaults'}) eq 'HASH') {
1515: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1516: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1517: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1518: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1519: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1520: } else {
1521: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1522: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1523: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1524: }
1525: if (ref($domconfig{'quotas'}) eq 'HASH') {
1526: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1527: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1528: } else {
1529: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1530: }
1531: my @usertools = ('aboutme','blog','portfolio');
1532: foreach my $item (@usertools) {
1533: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1534: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1535: }
1536: }
1537: }
1538: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1539: foreach my $item ('official','unofficial','community') {
1540: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1541: }
1542: }
1543: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1544: foreach my $item ('inststatustypes','inststatusorder') {
1545: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1546: }
1547: }
1548: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1549: foreach my $item ('canuse_pdfforms') {
1550: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1551: }
1552: }
1553: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1554: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1555: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1556: }
1557: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1558: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1559: }
1560: }
1561: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1562: $cachetime);
1563: return %domdefaults;
1564: }
1565:
1566: # --------------------------------------------------- Assign a key to a student
1567:
1568: sub assign_access_key {
1569: #
1570: # a valid key looks like uname:udom#comments
1571: # comments are being appended
1572: #
1573: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1574: $kdom=
1575: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1576: $knum=
1577: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1578: $cdom=
1579: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1580: $cnum=
1581: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1582: $udom=$env{'user.name'} unless (defined($udom));
1583: $uname=$env{'user.domain'} unless (defined($uname));
1584: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1585: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1586: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1587: # assigned to this person
1588: # - this should not happen,
1589: # unless something went wrong
1590: # the first time around
1591: # ready to assign
1592: $logentry=$1.'; '.$logentry;
1593: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1594: $kdom,$knum) eq 'ok') {
1595: # key now belongs to user
1596: my $envkey='key.'.$cdom.'_'.$cnum;
1597: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1598: &appenv({'environment.'.$envkey => $ckey});
1599: return 'ok';
1600: } else {
1601: return
1602: 'error: Count not permanently assign key, will need to be re-entered later.';
1603: }
1604: } else {
1605: return 'error: Could not assign key, try again later.';
1606: }
1607: } elsif (!$existing{$ckey}) {
1608: # the key does not exist
1609: return 'error: The key does not exist';
1610: } else {
1611: # the key is somebody else's
1612: return 'error: The key is already in use';
1613: }
1614: }
1615:
1616: # ------------------------------------------ put an additional comment on a key
1617:
1618: sub comment_access_key {
1619: #
1620: # a valid key looks like uname:udom#comments
1621: # comments are being appended
1622: #
1623: my ($ckey,$cdom,$cnum,$logentry)=@_;
1624: $cdom=
1625: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1626: $cnum=
1627: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1628: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1629: if ($existing{$ckey}) {
1630: $existing{$ckey}.='; '.$logentry;
1631: # ready to assign
1632: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1633: $cdom,$cnum) eq 'ok') {
1634: return 'ok';
1635: } else {
1636: return 'error: Count not store comment.';
1637: }
1638: } else {
1639: # the key does not exist
1640: return 'error: The key does not exist';
1641: }
1642: }
1643:
1644: # ------------------------------------------------------ Generate a set of keys
1645:
1646: sub generate_access_keys {
1647: my ($number,$cdom,$cnum,$logentry)=@_;
1648: $cdom=
1649: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1650: $cnum=
1651: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1652: unless (&allowed('mky',$cdom)) { return 0; }
1653: unless (($cdom) && ($cnum)) { return 0; }
1654: if ($number>10000) { return 0; }
1655: sleep(2); # make sure don't get same seed twice
1656: srand(time()^($$+($$<<15))); # from "Programming Perl"
1657: my $total=0;
1658: for (my $i=1;$i<=$number;$i++) {
1659: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1660: sprintf("%lx",int(100000*rand)).'-'.
1661: sprintf("%lx",int(100000*rand));
1662: $newkey=~s/1/g/g; # folks mix up 1 and l
1663: $newkey=~s/0/h/g; # and also 0 and O
1664: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1665: if ($existing{$newkey}) {
1666: $i--;
1667: } else {
1668: if (&put('accesskeys',
1669: { $newkey => '# generated '.localtime().
1670: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1671: '; '.$logentry },
1672: $cdom,$cnum) eq 'ok') {
1673: $total++;
1674: }
1675: }
1676: }
1677: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1678: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1679: return $total;
1680: }
1681:
1682: # ------------------------------------------------------- Validate an accesskey
1683:
1684: sub validate_access_key {
1685: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1686: $cdom=
1687: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1688: $cnum=
1689: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1690: $udom=$env{'user.domain'} unless (defined($udom));
1691: $uname=$env{'user.name'} unless (defined($uname));
1692: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1693: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1694: }
1695:
1696: # ------------------------------------- Find the section of student in a course
1697: sub devalidate_getsection_cache {
1698: my ($udom,$unam,$courseid)=@_;
1699: my $hashid="$udom:$unam:$courseid";
1700: &devalidate_cache_new('getsection',$hashid);
1701: }
1702:
1703: sub courseid_to_courseurl {
1704: my ($courseid) = @_;
1705: #already url style courseid
1706: return $courseid if ($courseid =~ m{^/});
1707:
1708: if (exists($env{'course.'.$courseid.'.num'})) {
1709: my $cnum = $env{'course.'.$courseid.'.num'};
1710: my $cdom = $env{'course.'.$courseid.'.domain'};
1711: return "/$cdom/$cnum";
1712: }
1713:
1714: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1715: if (exists($courseinfo{'num'})) {
1716: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1717: }
1718:
1719: return undef;
1720: }
1721:
1722: sub getsection {
1723: my ($udom,$unam,$courseid)=@_;
1724: my $cachetime=1800;
1725:
1726: my $hashid="$udom:$unam:$courseid";
1727: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1728: if (defined($cached)) { return $result; }
1729:
1730: my %Pending;
1731: my %Expired;
1732: #
1733: # Each role can either have not started yet (pending), be active,
1734: # or have expired.
1735: #
1736: # If there is an active role, we are done.
1737: #
1738: # If there is more than one role which has not started yet,
1739: # choose the one which will start sooner
1740: # If there is one role which has not started yet, return it.
1741: #
1742: # If there is more than one expired role, choose the one which ended last.
1743: # If there is a role which has expired, return it.
1744: #
1745: $courseid = &courseid_to_courseurl($courseid);
1746: my $extra = &freeze_escape({'skipcheck' => 1});
1747: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
1748: foreach my $key (keys(%roleshash)) {
1749: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1750: my $section=$1;
1751: if ($key eq $courseid.'_st') { $section=''; }
1752: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1753: my $now=time;
1754: if (defined($end) && $end && ($now > $end)) {
1755: $Expired{$end}=$section;
1756: next;
1757: }
1758: if (defined($start) && $start && ($now < $start)) {
1759: $Pending{$start}=$section;
1760: next;
1761: }
1762: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1763: }
1764: #
1765: # Presumedly there will be few matching roles from the above
1766: # loop and the sorting time will be negligible.
1767: if (scalar(keys(%Pending))) {
1768: my ($time) = sort {$a <=> $b} keys(%Pending);
1769: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1770: }
1771: if (scalar(keys(%Expired))) {
1772: my @sorted = sort {$a <=> $b} keys(%Expired);
1773: my $time = pop(@sorted);
1774: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1775: }
1776: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1777: }
1778:
1779: sub save_cache {
1780: &purge_remembered();
1781: #&Apache::loncommon::validate_page();
1782: undef(%env);
1783: undef($env_loaded);
1784: }
1785:
1786: my $to_remember=-1;
1787: my %remembered;
1788: my %accessed;
1789: my $kicks=0;
1790: my $hits=0;
1791: sub make_key {
1792: my ($name,$id) = @_;
1793: if (length($id) > 65
1794: && length(&escape($id)) > 200) {
1795: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1796: }
1797: return &escape($name.':'.$id);
1798: }
1799:
1800: sub devalidate_cache_new {
1801: my ($name,$id,$debug) = @_;
1802: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1803: $id=&make_key($name,$id);
1804: $memcache->delete($id);
1805: delete($remembered{$id});
1806: delete($accessed{$id});
1807: }
1808:
1809: sub is_cached_new {
1810: my ($name,$id,$debug) = @_;
1811: $id=&make_key($name,$id);
1812: if (exists($remembered{$id})) {
1813: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1814: $accessed{$id}=[&gettimeofday()];
1815: $hits++;
1816: return ($remembered{$id},1);
1817: }
1818: my $value = $memcache->get($id);
1819: if (!(defined($value))) {
1820: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1821: return (undef,undef);
1822: }
1823: if ($value eq '__undef__') {
1824: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1825: $value=undef;
1826: }
1827: &make_room($id,$value,$debug);
1828: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1829: return ($value,1);
1830: }
1831:
1832: sub do_cache_new {
1833: my ($name,$id,$value,$time,$debug) = @_;
1834: $id=&make_key($name,$id);
1835: my $setvalue=$value;
1836: if (!defined($setvalue)) {
1837: $setvalue='__undef__';
1838: }
1839: if (!defined($time) ) {
1840: $time=600;
1841: }
1842: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1843: my $result = $memcache->set($id,$setvalue,$time);
1844: if (! $result) {
1845: &logthis("caching of id -> $id failed");
1846: $memcache->disconnect_all();
1847: }
1848: # need to make a copy of $value
1849: &make_room($id,$value,$debug);
1850: return $value;
1851: }
1852:
1853: sub make_room {
1854: my ($id,$value,$debug)=@_;
1855:
1856: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1857: : $value;
1858: if ($to_remember<0) { return; }
1859: $accessed{$id}=[&gettimeofday()];
1860: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1861: my $to_kick;
1862: my $max_time=0;
1863: foreach my $other (keys(%accessed)) {
1864: if (&tv_interval($accessed{$other}) > $max_time) {
1865: $to_kick=$other;
1866: $max_time=&tv_interval($accessed{$other});
1867: }
1868: }
1869: delete($remembered{$to_kick});
1870: delete($accessed{$to_kick});
1871: $kicks++;
1872: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1873: return;
1874: }
1875:
1876: sub purge_remembered {
1877: #&logthis("Tossing ".scalar(keys(%remembered)));
1878: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1879: undef(%remembered);
1880: undef(%accessed);
1881: }
1882: # ------------------------------------- Read an entry from a user's environment
1883:
1884: sub userenvironment {
1885: my ($udom,$unam,@what)=@_;
1886: my $items;
1887: foreach my $item (@what) {
1888: $items.=&escape($item).'&';
1889: }
1890: $items=~s/\&$//;
1891: my %returnhash=();
1892: my $uhome = &homeserver($unam,$udom);
1893: unless ($uhome eq 'no_host') {
1894: my @answer=split(/\&/,
1895: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1896: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
1897: return %returnhash;
1898: }
1899: my $i;
1900: for ($i=0;$i<=$#what;$i++) {
1901: $returnhash{$what[$i]}=&unescape($answer[$i]);
1902: }
1903: }
1904: return %returnhash;
1905: }
1906:
1907: # ---------------------------------------------------------- Get a studentphoto
1908: sub studentphoto {
1909: my ($udom,$unam,$ext) = @_;
1910: my $home=&Apache::lonnet::homeserver($unam,$udom);
1911: if (defined($env{'request.course.id'})) {
1912: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1913: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1914: return(&retrievestudentphoto($udom,$unam,$ext));
1915: } else {
1916: my ($result,$perm_reqd)=
1917: &Apache::lonnet::auto_photo_permission($unam,$udom);
1918: if ($result eq 'ok') {
1919: if (!($perm_reqd eq 'yes')) {
1920: return(&retrievestudentphoto($udom,$unam,$ext));
1921: }
1922: }
1923: }
1924: }
1925: } else {
1926: my ($result,$perm_reqd) =
1927: &Apache::lonnet::auto_photo_permission($unam,$udom);
1928: if ($result eq 'ok') {
1929: if (!($perm_reqd eq 'yes')) {
1930: return(&retrievestudentphoto($udom,$unam,$ext));
1931: }
1932: }
1933: }
1934: return '/adm/lonKaputt/lonlogo_broken.gif';
1935: }
1936:
1937: sub retrievestudentphoto {
1938: my ($udom,$unam,$ext,$type) = @_;
1939: my $home=&Apache::lonnet::homeserver($unam,$udom);
1940: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1941: if ($ret eq 'ok') {
1942: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1943: if ($type eq 'thumbnail') {
1944: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1945: }
1946: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1947: return $tokenurl;
1948: } else {
1949: if ($type eq 'thumbnail') {
1950: return '/adm/lonKaputt/genericstudent_tn.gif';
1951: } else {
1952: return '/adm/lonKaputt/lonlogo_broken.gif';
1953: }
1954: }
1955: }
1956:
1957: # -------------------------------------------------------------------- New chat
1958:
1959: sub chatsend {
1960: my ($newentry,$anon,$group)=@_;
1961: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1962: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1963: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1964: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1965: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1966: &escape($newentry)).':'.$group,$chome);
1967: }
1968:
1969: # ------------------------------------------ Find current version of a resource
1970:
1971: sub getversion {
1972: my $fname=&clutter(shift);
1973: unless ($fname=~/^\/res\//) { return -1; }
1974: return ¤tversion(&filelocation('',$fname));
1975: }
1976:
1977: sub currentversion {
1978: my $fname=shift;
1979: my ($result,$cached)=&is_cached_new('resversion',$fname);
1980: if (defined($cached)) { return $result; }
1981: my $author=$fname;
1982: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1983: my ($udom,$uname)=split(/\//,$author);
1984: my $home=homeserver($uname,$udom);
1985: if ($home eq 'no_host') {
1986: return -1;
1987: }
1988: my $answer=reply("currentversion:$fname",$home);
1989: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1990: return -1;
1991: }
1992: return &do_cache_new('resversion',$fname,$answer,600);
1993: }
1994:
1995: # ----------------------------- Subscribe to a resource, return URL if possible
1996:
1997: sub subscribe {
1998: my $fname=shift;
1999: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2000: $fname=~s/[\n\r]//g;
2001: my $author=$fname;
2002: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2003: my ($udom,$uname)=split(/\//,$author);
2004: my $home=homeserver($uname,$udom);
2005: if ($home eq 'no_host') {
2006: return 'not_found';
2007: }
2008: my $answer=reply("sub:$fname",$home);
2009: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2010: $answer.=' by '.$home;
2011: }
2012: return $answer;
2013: }
2014:
2015: # -------------------------------------------------------------- Replicate file
2016:
2017: sub repcopy {
2018: my $filename=shift;
2019: $filename=~s/\/+/\//g;
2020: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
2021: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
2022: if ($filename=~m|^/home/httpd/html/userfiles/| or
2023: $filename=~m -^/*(uploaded|editupload)/-) {
2024: return &repcopy_userfile($filename);
2025: }
2026: $filename=~s/[\n\r]//g;
2027: my $transname="$filename.in.transfer";
2028: # FIXME: this should flock
2029: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2030: my $remoteurl=subscribe($filename);
2031: if ($remoteurl =~ /^con_lost by/) {
2032: &logthis("Subscribe returned $remoteurl: $filename");
2033: return 'unavailable';
2034: } elsif ($remoteurl eq 'not_found') {
2035: #&logthis("Subscribe returned not_found: $filename");
2036: return 'not_found';
2037: } elsif ($remoteurl =~ /^rejected by/) {
2038: &logthis("Subscribe returned $remoteurl: $filename");
2039: return 'forbidden';
2040: } elsif ($remoteurl eq 'directory') {
2041: return 'ok';
2042: } else {
2043: my $author=$filename;
2044: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2045: my ($udom,$uname)=split(/\//,$author);
2046: my $home=homeserver($uname,$udom);
2047: unless ($home eq $perlvar{'lonHostID'}) {
2048: my @parts=split(/\//,$filename);
2049: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2050: if ($path ne "$perlvar{'lonDocRoot'}/res") {
2051: &logthis("Malconfiguration for replication: $filename");
2052: return 'bad_request';
2053: }
2054: my $count;
2055: for ($count=5;$count<$#parts;$count++) {
2056: $path.="/$parts[$count]";
2057: if ((-e $path)!=1) {
2058: mkdir($path,0777);
2059: }
2060: }
2061: my $ua=new LWP::UserAgent;
2062: my $request=new HTTP::Request('GET',"$remoteurl");
2063: my $response=$ua->request($request,$transname);
2064: if ($response->is_error()) {
2065: unlink($transname);
2066: my $message=$response->status_line;
2067: &logthis("<font color=\"blue\">WARNING:"
2068: ." LWP get: $message: $filename</font>");
2069: return 'unavailable';
2070: } else {
2071: if ($remoteurl!~/\.meta$/) {
2072: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2073: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2074: if ($mresponse->is_error()) {
2075: unlink($filename.'.meta');
2076: &logthis(
2077: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2078: }
2079: }
2080: rename($transname,$filename);
2081: return 'ok';
2082: }
2083: }
2084: }
2085: }
2086:
2087: # ------------------------------------------------ Get server side include body
2088: sub ssi_body {
2089: my ($filelink,%form)=@_;
2090: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2091: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2092: }
2093: my $output='';
2094: my $response;
2095: if ($filelink=~/^https?\:/) {
2096: ($output,$response)=&externalssi($filelink);
2097: } else {
2098: $filelink .= $filelink=~/\?/ ? '&' : '?';
2099: $filelink .= 'inhibitmenu=yes';
2100: ($output,$response)=&ssi($filelink,%form);
2101: }
2102: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2103: $output=~s/^.*?\<body[^\>]*\>//si;
2104: $output=~s/\<\/body\s*\>.*?$//si;
2105: if (wantarray) {
2106: return ($output, $response);
2107: } else {
2108: return $output;
2109: }
2110: }
2111:
2112: # --------------------------------------------------------- Server Side Include
2113:
2114: sub absolute_url {
2115: my ($host_name) = @_;
2116: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2117: if ($host_name eq '') {
2118: $host_name = $ENV{'SERVER_NAME'};
2119: }
2120: return $protocol.$host_name;
2121: }
2122:
2123: #
2124: # Server side include.
2125: # Parameters:
2126: # fn Possibly encrypted resource name/id.
2127: # form Hash that describes how the rendering should be done
2128: # and other things.
2129: # Returns:
2130: # Scalar context: The content of the response.
2131: # Array context: 2 element list of the content and the full response object.
2132: #
2133: sub ssi {
2134:
2135: my ($fn,%form)=@_;
2136: my $ua=new LWP::UserAgent;
2137: my $request;
2138:
2139: $form{'no_update_last_known'}=1;
2140: &Apache::lonenc::check_encrypt(\$fn);
2141: if (%form) {
2142: $request=new HTTP::Request('POST',&absolute_url().$fn);
2143: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2144: } else {
2145: $request=new HTTP::Request('GET',&absolute_url().$fn);
2146: }
2147:
2148: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2149: my $response=$ua->request($request);
2150:
2151: if (wantarray) {
2152: return ($response->content, $response);
2153: } else {
2154: return $response->content;
2155: }
2156: }
2157:
2158: sub externalssi {
2159: my ($url)=@_;
2160: my $ua=new LWP::UserAgent;
2161: my $request=new HTTP::Request('GET',$url);
2162: my $response=$ua->request($request);
2163: if (wantarray) {
2164: return ($response->content, $response);
2165: } else {
2166: return $response->content;
2167: }
2168: }
2169:
2170: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2171:
2172: sub allowuploaded {
2173: my ($srcurl,$url)=@_;
2174: $url=&clutter(&declutter($url));
2175: my $dir=$url;
2176: $dir=~s/\/[^\/]+$//;
2177: my %httpref=();
2178: my $httpurl=&hreflocation('',$url);
2179: $httpref{'httpref.'.$httpurl}=$srcurl;
2180: &Apache::lonnet::appenv(\%httpref);
2181: }
2182:
2183: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2184: # input: action, courseID, current domain, intended
2185: # path to file, source of file, instruction to parse file for objects,
2186: # ref to hash for embedded objects,
2187: # ref to hash for codebase of java objects.
2188: # reference to scalar to accommodate mime type determined
2189: # from File::MMagic if $parser = parse.
2190: #
2191: # output: url to file (if action was uploaddoc),
2192: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2193: #
2194: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2195: # course.
2196: #
2197: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2198: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2199: # course's home server.
2200: #
2201: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2202: # be copied from $source (current location) to
2203: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2204: # and will then be copied to
2205: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2206: # course's home server.
2207: #
2208: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2209: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2210: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2211: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2212: # in course's home server.
2213: #
2214:
2215: sub process_coursefile {
2216: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2217: $mimetype)=@_;
2218: my $fetchresult;
2219: my $home=&homeserver($docuname,$docudom);
2220: if ($action eq 'propagate') {
2221: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2222: $home);
2223: } else {
2224: my $fpath = '';
2225: my $fname = $file;
2226: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2227: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2228: my $filepath = &build_filepath($fpath);
2229: if ($action eq 'copy') {
2230: if ($source eq '') {
2231: $fetchresult = 'no source file';
2232: return $fetchresult;
2233: } else {
2234: my $destination = $filepath.'/'.$fname;
2235: rename($source,$destination);
2236: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2237: $home);
2238: }
2239: } elsif ($action eq 'uploaddoc') {
2240: open(my $fh,'>'.$filepath.'/'.$fname);
2241: print $fh $env{'form.'.$source};
2242: close($fh);
2243: if ($parser eq 'parse') {
2244: my $mm = new File::MMagic;
2245: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2246: if ($type eq 'text/html') {
2247: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2248: unless ($parse_result eq 'ok') {
2249: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2250: }
2251: }
2252: if (ref($mimetype)) {
2253: $$mimetype = $type;
2254: }
2255: }
2256: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2257: $home);
2258: if ($fetchresult eq 'ok') {
2259: return '/uploaded/'.$fpath.'/'.$fname;
2260: } else {
2261: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2262: ' to host '.$home.': '.$fetchresult);
2263: return '/adm/notfound.html';
2264: }
2265: }
2266: }
2267: unless ( $fetchresult eq 'ok') {
2268: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2269: ' to host '.$home.': '.$fetchresult);
2270: }
2271: return $fetchresult;
2272: }
2273:
2274: sub build_filepath {
2275: my ($fpath) = @_;
2276: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2277: unless ($fpath eq '') {
2278: my @parts=split('/',$fpath);
2279: foreach my $part (@parts) {
2280: $filepath.= '/'.$part;
2281: if ((-e $filepath)!=1) {
2282: mkdir($filepath,0777);
2283: }
2284: }
2285: }
2286: return $filepath;
2287: }
2288:
2289: sub store_edited_file {
2290: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2291: my $file = $primary_url;
2292: $file =~ s#^/uploaded/$docudom/$docuname/##;
2293: my $fpath = '';
2294: my $fname = $file;
2295: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2296: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2297: my $filepath = &build_filepath($fpath);
2298: open(my $fh,'>'.$filepath.'/'.$fname);
2299: print $fh $content;
2300: close($fh);
2301: my $home=&homeserver($docuname,$docudom);
2302: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2303: $home);
2304: if ($$fetchresult eq 'ok') {
2305: return '/uploaded/'.$fpath.'/'.$fname;
2306: } else {
2307: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2308: ' to host '.$home.': '.$$fetchresult);
2309: return '/adm/notfound.html';
2310: }
2311: }
2312:
2313: sub clean_filename {
2314: my ($fname,$args)=@_;
2315: # Replace Windows backslashes by forward slashes
2316: $fname=~s/\\/\//g;
2317: if (!$args->{'keep_path'}) {
2318: # Get rid of everything but the actual filename
2319: $fname=~s/^.*\/([^\/]+)$/$1/;
2320: }
2321: # Replace spaces by underscores
2322: $fname=~s/\s+/\_/g;
2323: # Replace all other weird characters by nothing
2324: $fname=~s{[^/\w\.\-]}{}g;
2325: # Replace all .\d. sequences with _\d. so they no longer look like version
2326: # numbers
2327: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2328: return $fname;
2329: }
2330: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2331: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2332: # image with the same aspect ratio as the original, but with dimensions which do
2333: # not exceed $resizewidth and $resizeheight.
2334:
2335: sub resizeImage {
2336: my ($img_path,$resizewidth,$resizeheight) = @_;
2337: my $ima = Image::Magick->new;
2338: my $resized;
2339: if (-e $img_path) {
2340: $ima->Read($img_path);
2341: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2342: my $width = $ima->Get('width');
2343: my $height = $ima->Get('height');
2344: if ($width > $resizewidth) {
2345: my $factor = $width/$resizewidth;
2346: my $newheight = $height/$factor;
2347: $ima->Scale(width=>$resizewidth,height=>$newheight);
2348: $resized = 1;
2349: }
2350: }
2351: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2352: my $width = $ima->Get('width');
2353: my $height = $ima->Get('height');
2354: if ($height > $resizeheight) {
2355: my $factor = $height/$resizeheight;
2356: my $newwidth = $width/$factor;
2357: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2358: $resized = 1;
2359: }
2360: }
2361: if ($resized) {
2362: $ima->Write($img_path);
2363: }
2364: }
2365: return;
2366: }
2367:
2368: # --------------- Take an uploaded file and put it into the userfiles directory
2369: # input: $formname - the contents of the file are in $env{"form.$formname"}
2370: # the desired filename is in $env{"form.$formname.filename"}
2371: # $context - possible values: coursedoc, existingfile, overwrite,
2372: # canceloverwrite, or ''.
2373: # if 'coursedoc': upload to the current course
2374: # if 'existingfile': write file to tmp/overwrites directory
2375: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2376: # $context is passed as argument to &finishuserfileupload
2377: # $subdir - directory in userfile to store the file into
2378: # $parser - instruction to parse file for objects ($parser = parse)
2379: # $allfiles - reference to hash for embedded objects
2380: # $codebase - reference to hash for codebase of java objects
2381: # $desuname - username for permanent storage of uploaded file
2382: # $dsetudom - domain for permanaent storage of uploaded file
2383: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2384: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2385: # $resizewidth - width (pixels) to which to resize uploaded image
2386: # $resizeheight - height (pixels) to which to resize uploaded image
2387: # $mimetype - reference to scalar to accommodate mime type determined
2388: # from File::MMagic if $parser = parse.
2389: #
2390: # output: url of file in userspace, or error: <message>
2391: # or /adm/notfound.html if failure to upload occurse
2392:
2393: sub userfileupload {
2394: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2395: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2396: if (!defined($subdir)) { $subdir='unknown'; }
2397: my $fname=$env{'form.'.$formname.'.filename'};
2398: $fname=&clean_filename($fname);
2399: # See if there is anything left
2400: unless ($fname) { return 'error: no uploaded file'; }
2401: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2402: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2403: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2404: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2405: my $now = time;
2406: my $filepath;
2407: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2408: $filepath = 'tmp/helprequests/'.$now;
2409: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2410: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2411: '_'.$env{'user.domain'}.'/pending';
2412: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2413: my ($docuname,$docudom);
2414: if ($destudom) {
2415: $docudom = $destudom;
2416: } else {
2417: $docudom = $env{'user.domain'};
2418: }
2419: if ($destuname) {
2420: $docuname = $destuname;
2421: } else {
2422: $docuname = $env{'user.name'};
2423: }
2424: if (exists($env{'form.group'})) {
2425: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2426: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2427: }
2428: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2429: if ($context eq 'canceloverwrite') {
2430: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2431: if (-e $tempfile) {
2432: my @info = stat($tempfile);
2433: if ($info[9] eq $env{'form.timestamp'}) {
2434: unlink($tempfile);
2435: }
2436: }
2437: return;
2438: }
2439: }
2440: # Create the directory if not present
2441: my @parts=split(/\//,$filepath);
2442: my $fullpath = $perlvar{'lonDaemons'};
2443: for (my $i=0;$i<@parts;$i++) {
2444: $fullpath .= '/'.$parts[$i];
2445: if ((-e $fullpath)!=1) {
2446: mkdir($fullpath,0777);
2447: }
2448: }
2449: open(my $fh,'>'.$fullpath.'/'.$fname);
2450: print $fh $env{'form.'.$formname};
2451: close($fh);
2452: if ($context eq 'existingfile') {
2453: my @info = stat($fullpath.'/'.$fname);
2454: return ($fullpath.'/'.$fname,$info[9]);
2455: } else {
2456: return $fullpath.'/'.$fname;
2457: }
2458: }
2459: if ($subdir eq 'scantron') {
2460: $fname = 'scantron_orig_'.$fname;
2461: } else {
2462: $fname="$subdir/$fname";
2463: }
2464: if ($context eq 'coursedoc') {
2465: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2466: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2467: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2468: return &finishuserfileupload($docuname,$docudom,
2469: $formname,$fname,$parser,$allfiles,
2470: $codebase,$thumbwidth,$thumbheight,
2471: $resizewidth,$resizeheight,$context,$mimetype);
2472: } else {
2473: $fname=$env{'form.folder'}.'/'.$fname;
2474: return &process_coursefile('uploaddoc',$docuname,$docudom,
2475: $fname,$formname,$parser,
2476: $allfiles,$codebase,$mimetype);
2477: }
2478: } elsif (defined($destuname)) {
2479: my $docuname=$destuname;
2480: my $docudom=$destudom;
2481: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2482: $parser,$allfiles,$codebase,
2483: $thumbwidth,$thumbheight,
2484: $resizewidth,$resizeheight,$context,$mimetype);
2485: } else {
2486: my $docuname=$env{'user.name'};
2487: my $docudom=$env{'user.domain'};
2488: if (exists($env{'form.group'})) {
2489: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2490: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2491: }
2492: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2493: $parser,$allfiles,$codebase,
2494: $thumbwidth,$thumbheight,
2495: $resizewidth,$resizeheight,$context,$mimetype);
2496: }
2497: }
2498:
2499: sub finishuserfileupload {
2500: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2501: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2502: my $path=$docudom.'/'.$docuname.'/';
2503: my $filepath=$perlvar{'lonDocRoot'};
2504:
2505: my ($fnamepath,$file,$fetchthumb);
2506: $file=$fname;
2507: if ($fname=~m|/|) {
2508: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2509: $path.=$fnamepath.'/';
2510: }
2511: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2512: my $count;
2513: for ($count=4;$count<=$#parts;$count++) {
2514: $filepath.="/$parts[$count]";
2515: if ((-e $filepath)!=1) {
2516: mkdir($filepath,0777);
2517: }
2518: }
2519:
2520: # Save the file
2521: {
2522: if (!open(FH,'>'.$filepath.'/'.$file)) {
2523: &logthis('Failed to create '.$filepath.'/'.$file);
2524: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2525: return '/adm/notfound.html';
2526: }
2527: if ($context eq 'overwrite') {
2528: my $source = $perlvar{'lonDaemons'}.'/tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2529: my $target = $filepath.'/'.$file;
2530: if (-e $source) {
2531: my @info = stat($source);
2532: if ($info[9] eq $env{'form.timestamp'}) {
2533: unless (&File::Copy::move($source,$target)) {
2534: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2535: return "Moving from $source failed";
2536: }
2537: } else {
2538: return "Temporary file: $source had unexpected date/time for last modification";
2539: }
2540: } else {
2541: return "Temporary file: $source missing";
2542: }
2543: } elsif (!print FH ($env{'form.'.$formname})) {
2544: &logthis('Failed to write to '.$filepath.'/'.$file);
2545: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2546: return '/adm/notfound.html';
2547: }
2548: close(FH);
2549: if ($resizewidth && $resizeheight) {
2550: my $mm = new File::MMagic;
2551: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2552: if ($mime_type =~ m{^image/}) {
2553: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2554: }
2555: }
2556: }
2557: if ($parser eq 'parse') {
2558: my $mm = new File::MMagic;
2559: my $type = $mm->checktype_filename($filepath.'/'.$file);
2560: if ($type eq 'text/html') {
2561: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2562: $allfiles,$codebase);
2563: unless ($parse_result eq 'ok') {
2564: &logthis('Failed to parse '.$filepath.$file.
2565: ' for embedded media: '.$parse_result);
2566: }
2567: }
2568: if (ref($mimetype)) {
2569: $$mimetype = $type;
2570: }
2571: }
2572: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2573: my $input = $filepath.'/'.$file;
2574: my $output = $filepath.'/'.'tn-'.$file;
2575: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2576: system("convert -sample $thumbsize $input $output");
2577: if (-e $filepath.'/'.'tn-'.$file) {
2578: $fetchthumb = 1;
2579: }
2580: }
2581:
2582: # Notify homeserver to grep it
2583: #
2584: my $docuhome=&homeserver($docuname,$docudom);
2585: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2586: if ($fetchresult eq 'ok') {
2587: if ($fetchthumb) {
2588: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2589: if ($thumbresult ne 'ok') {
2590: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2591: $docuhome.': '.$thumbresult);
2592: }
2593: }
2594: #
2595: # Return the URL to it
2596: return '/uploaded/'.$path.$file;
2597: } else {
2598: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2599: ': '.$fetchresult);
2600: return '/adm/notfound.html';
2601: }
2602: }
2603:
2604: sub extract_embedded_items {
2605: my ($fullpath,$allfiles,$codebase,$content) = @_;
2606: my @state = ();
2607: my %javafiles = (
2608: codebase => '',
2609: code => '',
2610: archive => ''
2611: );
2612: my %mediafiles = (
2613: src => '',
2614: movie => '',
2615: );
2616: my $p;
2617: if ($content) {
2618: $p = HTML::LCParser->new($content);
2619: } else {
2620: $p = HTML::LCParser->new($fullpath);
2621: }
2622: while (my $t=$p->get_token()) {
2623: if ($t->[0] eq 'S') {
2624: my ($tagname, $attr) = ($t->[1],$t->[2]);
2625: push(@state, $tagname);
2626: if (lc($tagname) eq 'allow') {
2627: &add_filetype($allfiles,$attr->{'src'},'src');
2628: }
2629: if (lc($tagname) eq 'img') {
2630: &add_filetype($allfiles,$attr->{'src'},'src');
2631: }
2632: if (lc($tagname) eq 'a') {
2633: &add_filetype($allfiles,$attr->{'href'},'href');
2634: }
2635: if (lc($tagname) eq 'script') {
2636: if ($attr->{'archive'} =~ /\.jar$/i) {
2637: &add_filetype($allfiles,$attr->{'archive'},'archive');
2638: } else {
2639: &add_filetype($allfiles,$attr->{'src'},'src');
2640: }
2641: }
2642: if (lc($tagname) eq 'link') {
2643: if (lc($attr->{'rel'}) eq 'stylesheet') {
2644: &add_filetype($allfiles,$attr->{'href'},'href');
2645: }
2646: }
2647: if (lc($tagname) eq 'object' ||
2648: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2649: foreach my $item (keys(%javafiles)) {
2650: $javafiles{$item} = '';
2651: }
2652: }
2653: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2654: my $name = lc($attr->{'name'});
2655: foreach my $item (keys(%javafiles)) {
2656: if ($name eq $item) {
2657: $javafiles{$item} = $attr->{'value'};
2658: last;
2659: }
2660: }
2661: foreach my $item (keys(%mediafiles)) {
2662: if ($name eq $item) {
2663: &add_filetype($allfiles, $attr->{'value'}, 'value');
2664: last;
2665: }
2666: }
2667: }
2668: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2669: foreach my $item (keys(%javafiles)) {
2670: if ($attr->{$item}) {
2671: $javafiles{$item} = $attr->{$item};
2672: last;
2673: }
2674: }
2675: foreach my $item (keys(%mediafiles)) {
2676: if ($attr->{$item}) {
2677: &add_filetype($allfiles,$attr->{$item},$item);
2678: last;
2679: }
2680: }
2681: }
2682: } elsif ($t->[0] eq 'E') {
2683: my ($tagname) = ($t->[1]);
2684: if ($javafiles{'codebase'} ne '') {
2685: $javafiles{'codebase'} .= '/';
2686: }
2687: if (lc($tagname) eq 'applet' ||
2688: lc($tagname) eq 'object' ||
2689: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2690: ) {
2691: foreach my $item (keys(%javafiles)) {
2692: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2693: my $file=$javafiles{'codebase'}.$javafiles{$item};
2694: &add_filetype($allfiles,$file,$item);
2695: }
2696: }
2697: }
2698: pop @state;
2699: }
2700: }
2701: return 'ok';
2702: }
2703:
2704: sub add_filetype {
2705: my ($allfiles,$file,$type)=@_;
2706: if (exists($allfiles->{$file})) {
2707: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2708: push(@{$allfiles->{$file}}, &escape($type));
2709: }
2710: } else {
2711: @{$allfiles->{$file}} = (&escape($type));
2712: }
2713: }
2714:
2715: sub removeuploadedurl {
2716: my ($url)=@_;
2717: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2718: return &removeuserfile($uname,$udom,$fname);
2719: }
2720:
2721: sub removeuserfile {
2722: my ($docuname,$docudom,$fname)=@_;
2723: my $home=&homeserver($docuname,$docudom);
2724: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2725: if ($result eq 'ok') {
2726: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2727: my $metafile = $fname.'.meta';
2728: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2729: my $url = "/uploaded/$docudom/$docuname/$fname";
2730: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2731: my $sqlresult =
2732: &update_portfolio_table($docuname,$docudom,$file,
2733: 'portfolio_metadata',$group,
2734: 'delete');
2735: }
2736: }
2737: return $result;
2738: }
2739:
2740: sub mkdiruserfile {
2741: my ($docuname,$docudom,$dir)=@_;
2742: my $home=&homeserver($docuname,$docudom);
2743: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2744: }
2745:
2746: sub renameuserfile {
2747: my ($docuname,$docudom,$old,$new)=@_;
2748: my $home=&homeserver($docuname,$docudom);
2749: my $result = &reply("renameuserfile:$docudom:$docuname:".
2750: &escape("$old").':'.&escape("$new"),$home);
2751: if ($result eq 'ok') {
2752: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2753: my $oldmeta = $old.'.meta';
2754: my $newmeta = $new.'.meta';
2755: my $metaresult =
2756: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2757: my $url = "/uploaded/$docudom/$docuname/$old";
2758: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2759: my $sqlresult =
2760: &update_portfolio_table($docuname,$docudom,$file,
2761: 'portfolio_metadata',$group,
2762: 'delete');
2763: }
2764: }
2765: return $result;
2766: }
2767:
2768: # ------------------------------------------------------------------------- Log
2769:
2770: sub log {
2771: my ($dom,$nam,$hom,$what)=@_;
2772: return critical("log:$dom:$nam:$what",$hom);
2773: }
2774:
2775: # ------------------------------------------------------------------ Course Log
2776: #
2777: # This routine flushes several buffers of non-mission-critical nature
2778: #
2779:
2780: sub flushcourselogs {
2781: &logthis('Flushing log buffers');
2782: #
2783: # course logs
2784: # This is a log of all transactions in a course, which can be used
2785: # for data mining purposes
2786: #
2787: # It also collects the courseid database, which lists last transaction
2788: # times and course titles for all courseids
2789: #
2790: my %courseidbuffer=();
2791: foreach my $crsid (keys(%courselogs)) {
2792: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2793: &escape($courselogs{$crsid}),
2794: $coursehombuf{$crsid}) eq 'ok') {
2795: delete $courselogs{$crsid};
2796: } else {
2797: &logthis('Failed to flush log buffer for '.$crsid);
2798: if (length($courselogs{$crsid})>40000) {
2799: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2800: " exceeded maximum size, deleting.</font>");
2801: delete $courselogs{$crsid};
2802: }
2803: }
2804: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2805: 'description' => $coursedescrbuf{$crsid},
2806: 'inst_code' => $courseinstcodebuf{$crsid},
2807: 'type' => $coursetypebuf{$crsid},
2808: 'owner' => $courseownerbuf{$crsid},
2809: };
2810: }
2811: #
2812: # Write course id database (reverse lookup) to homeserver of courses
2813: # Is used in pickcourse
2814: #
2815: foreach my $crs_home (keys(%courseidbuffer)) {
2816: my $response = &courseidput(&host_domain($crs_home),
2817: $courseidbuffer{$crs_home},
2818: $crs_home,'timeonly');
2819: }
2820: #
2821: # File accesses
2822: # Writes to the dynamic metadata of resources to get hit counts, etc.
2823: #
2824: foreach my $entry (keys(%accesshash)) {
2825: if ($entry =~ /___count$/) {
2826: my ($dom,$name);
2827: ($dom,$name,undef)=
2828: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2829: if (! defined($dom) || $dom eq '' ||
2830: ! defined($name) || $name eq '') {
2831: my $cid = $env{'request.course.id'};
2832: $dom = $env{'request.'.$cid.'.domain'};
2833: $name = $env{'request.'.$cid.'.num'};
2834: }
2835: my $value = $accesshash{$entry};
2836: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2837: my %temphash=($url => $value);
2838: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2839: if ($result eq 'ok') {
2840: delete $accesshash{$entry};
2841: } elsif ($result eq 'unknown_cmd') {
2842: # Target server has old code running on it.
2843: my %temphash=($entry => $value);
2844: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2845: delete $accesshash{$entry};
2846: }
2847: }
2848: } else {
2849: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2850: my %temphash=($entry => $accesshash{$entry});
2851: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2852: delete $accesshash{$entry};
2853: }
2854: }
2855: }
2856: #
2857: # Roles
2858: # Reverse lookup of user roles for course faculty/staff and co-authorship
2859: #
2860: foreach my $entry (keys(%userrolehash)) {
2861: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2862: split(/\:/,$entry);
2863: if (&Apache::lonnet::put('nohist_userroles',
2864: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2865: $rudom,$runame) eq 'ok') {
2866: delete $userrolehash{$entry};
2867: }
2868: }
2869: #
2870: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2871: #
2872: my %domrolebuffer = ();
2873: foreach my $entry (keys(%domainrolehash)) {
2874: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2875: if ($domrolebuffer{$rudom}) {
2876: $domrolebuffer{$rudom}.='&'.&escape($entry).
2877: '='.&escape($domainrolehash{$entry});
2878: } else {
2879: $domrolebuffer{$rudom}.=&escape($entry).
2880: '='.&escape($domainrolehash{$entry});
2881: }
2882: delete $domainrolehash{$entry};
2883: }
2884: foreach my $dom (keys(%domrolebuffer)) {
2885: my %servers = &get_servers($dom,'library');
2886: foreach my $tryserver (keys(%servers)) {
2887: unless (&reply('domroleput:'.$dom.':'.
2888: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2889: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2890: }
2891: }
2892: }
2893: $dumpcount++;
2894: }
2895:
2896: sub courselog {
2897: my $what=shift;
2898: $what=time.':'.$what;
2899: unless ($env{'request.course.id'}) { return ''; }
2900: $coursedombuf{$env{'request.course.id'}}=
2901: $env{'course.'.$env{'request.course.id'}.'.domain'};
2902: $coursenumbuf{$env{'request.course.id'}}=
2903: $env{'course.'.$env{'request.course.id'}.'.num'};
2904: $coursehombuf{$env{'request.course.id'}}=
2905: $env{'course.'.$env{'request.course.id'}.'.home'};
2906: $coursedescrbuf{$env{'request.course.id'}}=
2907: $env{'course.'.$env{'request.course.id'}.'.description'};
2908: $courseinstcodebuf{$env{'request.course.id'}}=
2909: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2910: $courseownerbuf{$env{'request.course.id'}}=
2911: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2912: $coursetypebuf{$env{'request.course.id'}}=
2913: $env{'course.'.$env{'request.course.id'}.'.type'};
2914: if (defined $courselogs{$env{'request.course.id'}}) {
2915: $courselogs{$env{'request.course.id'}}.='&'.$what;
2916: } else {
2917: $courselogs{$env{'request.course.id'}}.=$what;
2918: }
2919: if (length($courselogs{$env{'request.course.id'}})>4048) {
2920: &flushcourselogs();
2921: }
2922: }
2923:
2924: sub courseacclog {
2925: my $fnsymb=shift;
2926: unless ($env{'request.course.id'}) { return ''; }
2927: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2928: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2929: $what.=':POST';
2930: # FIXME: Probably ought to escape things....
2931: foreach my $key (keys(%env)) {
2932: if ($key=~/^form\.(.*)/) {
2933: my $formitem = $1;
2934: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2935: $what.=':'.$formitem.'='.$env{$key};
2936: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2937: $what.=':'.$formitem.'='.$env{$key};
2938: }
2939: }
2940: }
2941: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2942: # FIXME: We should not be depending on a form parameter that someone
2943: # editing lonsearchcat.pm might change in the future.
2944: if ($env{'form.phase'} eq 'course_search') {
2945: $what.= ':POST';
2946: # FIXME: Probably ought to escape things....
2947: foreach my $element ('courseexp','crsfulltext','crsrelated',
2948: 'crsdiscuss') {
2949: $what.=':'.$element.'='.$env{'form.'.$element};
2950: }
2951: }
2952: }
2953: &courselog($what);
2954: }
2955:
2956: sub countacc {
2957: my $url=&declutter(shift);
2958: return if (! defined($url) || $url eq '');
2959: unless ($env{'request.course.id'}) { return ''; }
2960: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2961: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2962: $accesshash{$key}++;
2963: }
2964:
2965: sub linklog {
2966: my ($from,$to)=@_;
2967: $from=&declutter($from);
2968: $to=&declutter($to);
2969: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2970: $accesshash{$to.'___'.$from.'___goto'}=1;
2971: }
2972:
2973: sub userrolelog {
2974: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2975: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2976: ($trole=~/^in/) || ($trole=~/^cc/) ||
2977: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2978: ($trole=~/^ta/) || ($trole=~/^co/)) {
2979: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2980: $userrolehash
2981: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2982: =$tend.':'.$tstart;
2983: }
2984: if (($env{'request.role'} =~ /dc\./) &&
2985: (($trole=~/^au/) || ($trole=~/^in/) ||
2986: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2987: ($trole=~/^cr/) || ($trole=~/^ta/) ||
2988: ($trole=~/^co/))) {
2989: $userrolehash
2990: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2991: =$tend.':'.$tstart;
2992: }
2993: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2994: ($trole=~/^li/) || ($trole=~/^li/) ||
2995: ($trole=~/^au/) || ($trole=~/^dg/) ||
2996: ($trole=~/^sc/)) {
2997: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2998: $domainrolehash
2999: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3000: = $tend.':'.$tstart;
3001: }
3002: }
3003:
3004: sub courserolelog {
3005: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3006: if (($trole eq 'cc') || ($trole eq 'in') ||
3007: ($trole eq 'ep') || ($trole eq 'ad') ||
3008: ($trole eq 'ta') || ($trole eq 'st') ||
3009: ($trole=~/^cr/) || ($trole eq 'gr') ||
3010: ($trole eq 'co')) {
3011: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3012: my $cdom = $1;
3013: my $cnum = $2;
3014: my $sec = $3;
3015: my $namespace = 'rolelog';
3016: my %storehash = (
3017: role => $trole,
3018: start => $tstart,
3019: end => $tend,
3020: selfenroll => $selfenroll,
3021: context => $context,
3022: );
3023: if ($trole eq 'gr') {
3024: $namespace = 'groupslog';
3025: $storehash{'group'} = $sec;
3026: } else {
3027: $storehash{'section'} = $sec;
3028: }
3029: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3030: if (($trole ne 'st') || ($sec ne '')) {
3031: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3032: }
3033: }
3034: }
3035: return;
3036: }
3037:
3038: sub get_course_adv_roles {
3039: my ($cid,$codes) = @_;
3040: $cid=$env{'request.course.id'} unless (defined($cid));
3041: my %coursehash=&coursedescription($cid);
3042: my $crstype = &Apache::loncommon::course_type($cid);
3043: my %nothide=();
3044: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3045: if ($user !~ /:/) {
3046: $nothide{join(':',split(/[\@]/,$user))}=1;
3047: } else {
3048: $nothide{$user}=1;
3049: }
3050: }
3051: my %returnhash=();
3052: my %dumphash=
3053: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3054: my $now=time;
3055: my %privileged;
3056: foreach my $entry (keys(%dumphash)) {
3057: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3058: if (($tstart) && ($tstart<0)) { next; }
3059: if (($tend) && ($tend<$now)) { next; }
3060: if (($tstart) && ($now<$tstart)) { next; }
3061: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3062: if ($username eq '' || $domain eq '') { next; }
3063: unless (ref($privileged{$domain}) eq 'HASH') {
3064: my %dompersonnel =
3065: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3066: $privileged{$domain} = {};
3067: foreach my $server (keys(%dompersonnel)) {
3068: if (ref($dompersonnel{$server}) eq 'HASH') {
3069: foreach my $user (keys(%{$dompersonnel{$server}})) {
3070: my ($trole,$uname,$udom) = split(/:/,$user);
3071: $privileged{$udom}{$uname} = 1;
3072: }
3073: }
3074: }
3075: }
3076: if ((exists($privileged{$domain}{$username})) &&
3077: (!$nothide{$username.':'.$domain})) { next; }
3078: if ($role eq 'cr') { next; }
3079: if ($codes) {
3080: if ($section) { $role .= ':'.$section; }
3081: if ($returnhash{$role}) {
3082: $returnhash{$role}.=','.$username.':'.$domain;
3083: } else {
3084: $returnhash{$role}=$username.':'.$domain;
3085: }
3086: } else {
3087: my $key=&plaintext($role,$crstype);
3088: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3089: if ($returnhash{$key}) {
3090: $returnhash{$key}.=','.$username.':'.$domain;
3091: } else {
3092: $returnhash{$key}=$username.':'.$domain;
3093: }
3094: }
3095: }
3096: return %returnhash;
3097: }
3098:
3099: sub get_my_roles {
3100: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3101: unless (defined($uname)) { $uname=$env{'user.name'}; }
3102: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3103: my (%dumphash,%nothide);
3104: if ($context eq 'userroles') {
3105: my $extra = &freeze_escape({'skipcheck' => 1});
3106: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3107: } else {
3108: %dumphash=
3109: &dump('nohist_userroles',$udom,$uname);
3110: if ($hidepriv) {
3111: my %coursehash=&coursedescription($udom.'_'.$uname);
3112: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3113: if ($user !~ /:/) {
3114: $nothide{join(':',split(/[\@]/,$user))} = 1;
3115: } else {
3116: $nothide{$user} = 1;
3117: }
3118: }
3119: }
3120: }
3121: my %returnhash=();
3122: my $now=time;
3123: my %privileged;
3124: foreach my $entry (keys(%dumphash)) {
3125: my ($role,$tend,$tstart);
3126: if ($context eq 'userroles') {
3127: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3128: } else {
3129: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3130: }
3131: if (($tstart) && ($tstart<0)) { next; }
3132: my $status = 'active';
3133: if (($tend) && ($tend<=$now)) {
3134: $status = 'previous';
3135: }
3136: if (($tstart) && ($now<$tstart)) {
3137: $status = 'future';
3138: }
3139: if (ref($types) eq 'ARRAY') {
3140: if (!grep(/^\Q$status\E$/,@{$types})) {
3141: next;
3142: }
3143: } else {
3144: if ($status ne 'active') {
3145: next;
3146: }
3147: }
3148: my ($rolecode,$username,$domain,$section,$area);
3149: if ($context eq 'userroles') {
3150: ($area,$rolecode) = split(/_/,$entry);
3151: (undef,$domain,$username,$section) = split(/\//,$area);
3152: } else {
3153: ($role,$username,$domain,$section) = split(/\:/,$entry);
3154: }
3155: if (ref($roledoms) eq 'ARRAY') {
3156: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3157: next;
3158: }
3159: }
3160: if (ref($roles) eq 'ARRAY') {
3161: if (!grep(/^\Q$role\E$/,@{$roles})) {
3162: if ($role =~ /^cr\//) {
3163: if (!grep(/^cr$/,@{$roles})) {
3164: next;
3165: }
3166: } elsif ($role =~ /^gr\//) {
3167: if (!grep(/^gr$/,@{$roles})) {
3168: next;
3169: }
3170: } else {
3171: next;
3172: }
3173: }
3174: }
3175: if ($hidepriv) {
3176: if ($context eq 'userroles') {
3177: if ((&privileged($username,$domain)) &&
3178: (!$nothide{$username.':'.$domain})) {
3179: next;
3180: }
3181: } else {
3182: unless (ref($privileged{$domain}) eq 'HASH') {
3183: my %dompersonnel =
3184: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3185: $privileged{$domain} = {};
3186: if (keys(%dompersonnel)) {
3187: foreach my $server (keys(%dompersonnel)) {
3188: if (ref($dompersonnel{$server}) eq 'HASH') {
3189: foreach my $user (keys(%{$dompersonnel{$server}})) {
3190: my ($trole,$uname,$udom) = split(/:/,$user);
3191: $privileged{$udom}{$uname} = $trole;
3192: }
3193: }
3194: }
3195: }
3196: }
3197: if (exists($privileged{$domain}{$username})) {
3198: if (!$nothide{$username.':'.$domain}) {
3199: next;
3200: }
3201: }
3202: }
3203: }
3204: if ($withsec) {
3205: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3206: $tstart.':'.$tend;
3207: } else {
3208: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3209: }
3210: }
3211: return %returnhash;
3212: }
3213:
3214: # ----------------------------------------------------- Frontpage Announcements
3215: #
3216: #
3217:
3218: sub postannounce {
3219: my ($server,$text)=@_;
3220: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3221: unless ($text=~/\w/) { $text=''; }
3222: return &reply('setannounce:'.&escape($text),$server);
3223: }
3224:
3225: sub getannounce {
3226:
3227: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3228: my $announcement='';
3229: while (my $line = <$fh>) { $announcement .= $line; }
3230: close($fh);
3231: if ($announcement=~/\w/) {
3232: return
3233: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3234: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3235: } else {
3236: return '';
3237: }
3238: } else {
3239: return '';
3240: }
3241: }
3242:
3243: # ---------------------------------------------------------- Course ID routines
3244: # Deal with domain's nohist_courseid.db files
3245: #
3246:
3247: sub courseidput {
3248: my ($domain,$storehash,$coursehome,$caller) = @_;
3249: return unless (ref($storehash) eq 'HASH');
3250: my $outcome;
3251: if ($caller eq 'timeonly') {
3252: my $cids = '';
3253: foreach my $item (keys(%$storehash)) {
3254: $cids.=&escape($item).'&';
3255: }
3256: $cids=~s/\&$//;
3257: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3258: $coursehome);
3259: } else {
3260: my $items = '';
3261: foreach my $item (keys(%$storehash)) {
3262: $items.= &escape($item).'='.
3263: &freeze_escape($$storehash{$item}).'&';
3264: }
3265: $items=~s/\&$//;
3266: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3267: $coursehome);
3268: }
3269: if ($outcome eq 'unknown_cmd') {
3270: my $what;
3271: foreach my $cid (keys(%$storehash)) {
3272: $what .= &escape($cid).'=';
3273: foreach my $item ('description','inst_code','owner','type') {
3274: $what .= &escape($storehash->{$cid}{$item}).':';
3275: }
3276: $what =~ s/\:$/&/;
3277: }
3278: $what =~ s/\&$//;
3279: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3280: } else {
3281: return $outcome;
3282: }
3283: }
3284:
3285: sub courseiddump {
3286: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3287: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3288: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3289: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3290: my $as_hash = 1;
3291: my %returnhash;
3292: if (!$domfilter) { $domfilter=''; }
3293: my %libserv = &all_library();
3294: foreach my $tryserver (keys(%libserv)) {
3295: if ( ( $hostidflag == 1
3296: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3297: || (!defined($hostidflag)) ) {
3298:
3299: if (($domfilter eq '') ||
3300: (&host_domain($tryserver) eq $domfilter)) {
3301: my $rep =
3302: &reply('courseiddump:'.&host_domain($tryserver).':'.
3303: $sincefilter.':'.&escape($descfilter).':'.
3304: &escape($instcodefilter).':'.&escape($ownerfilter).
3305: ':'.&escape($coursefilter).':'.&escape($typefilter).
3306: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3307: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3308: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3309: &escape($cc_clone).':'.$cloneonly.':'.
3310: &escape($createdbefore).':'.&escape($createdafter).':'.
3311: &escape($creationcontext).':'.$domcloner,
3312: $tryserver);
3313: my @pairs=split(/\&/,$rep);
3314: foreach my $item (@pairs) {
3315: my ($key,$value)=split(/\=/,$item,2);
3316: $key = &unescape($key);
3317: next if ($key =~ /^error: 2 /);
3318: my $result = &thaw_unescape($value);
3319: if (ref($result) eq 'HASH') {
3320: $returnhash{$key}=$result;
3321: } else {
3322: my @responses = split(/:/,$value);
3323: my @items = ('description','inst_code','owner','type');
3324: for (my $i=0; $i<@responses; $i++) {
3325: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3326: }
3327: }
3328: }
3329: }
3330: }
3331: }
3332: return %returnhash;
3333: }
3334:
3335: sub courselastaccess {
3336: my ($cdom,$cnum,$hostidref) = @_;
3337: my %returnhash;
3338: if ($cdom && $cnum) {
3339: my $chome = &homeserver($cnum,$cdom);
3340: if ($chome ne 'no_host') {
3341: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3342: &extract_lastaccess(\%returnhash,$rep);
3343: }
3344: } else {
3345: if (!$cdom) { $cdom=''; }
3346: my %libserv = &all_library();
3347: foreach my $tryserver (keys(%libserv)) {
3348: if (ref($hostidref) eq 'ARRAY') {
3349: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3350: }
3351: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3352: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3353: &extract_lastaccess(\%returnhash,$rep);
3354: }
3355: }
3356: }
3357: return %returnhash;
3358: }
3359:
3360: sub extract_lastaccess {
3361: my ($returnhash,$rep) = @_;
3362: if (ref($returnhash) eq 'HASH') {
3363: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3364: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3365: $rep eq '') {
3366: my @pairs=split(/\&/,$rep);
3367: foreach my $item (@pairs) {
3368: my ($key,$value)=split(/\=/,$item,2);
3369: $key = &unescape($key);
3370: next if ($key =~ /^error: 2 /);
3371: $returnhash->{$key} = &thaw_unescape($value);
3372: }
3373: }
3374: }
3375: return;
3376: }
3377:
3378: # ---------------------------------------------------------- DC e-mail
3379:
3380: sub dcmailput {
3381: my ($domain,$msgid,$message,$server)=@_;
3382: my $status = &Apache::lonnet::critical(
3383: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3384: &escape($message),$server);
3385: return $status;
3386: }
3387:
3388: sub dcmaildump {
3389: my ($dom,$startdate,$enddate,$senders) = @_;
3390: my %returnhash=();
3391:
3392: if (defined(&domain($dom,'primary'))) {
3393: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3394: &escape($enddate).':';
3395: my @esc_senders=map { &escape($_)} @$senders;
3396: $cmd.=&escape(join('&',@esc_senders));
3397: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3398: my ($key,$value) = split(/\=/,$line,2);
3399: if (($key) && ($value)) {
3400: $returnhash{&unescape($key)} = &unescape($value);
3401: }
3402: }
3403: }
3404: return %returnhash;
3405: }
3406: # ---------------------------------------------------------- Domain roles
3407:
3408: sub get_domain_roles {
3409: my ($dom,$roles,$startdate,$enddate)=@_;
3410: if ((!defined($startdate)) || ($startdate eq '')) {
3411: $startdate = '.';
3412: }
3413: if ((!defined($enddate)) || ($enddate eq '')) {
3414: $enddate = '.';
3415: }
3416: my $rolelist;
3417: if (ref($roles) eq 'ARRAY') {
3418: $rolelist = join(':',@{$roles});
3419: }
3420: my %personnel = ();
3421:
3422: my %servers = &get_servers($dom,'library');
3423: foreach my $tryserver (keys(%servers)) {
3424: %{$personnel{$tryserver}}=();
3425: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3426: &escape($startdate).':'.
3427: &escape($enddate).':'.
3428: &escape($rolelist), $tryserver))) {
3429: my ($key,$value) = split(/\=/,$line,2);
3430: if (($key) && ($value)) {
3431: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3432: }
3433: }
3434: }
3435: return %personnel;
3436: }
3437:
3438: # ----------------------------------------------------------- Interval timing
3439:
3440: sub get_first_access {
3441: my ($type,$argsymb)=@_;
3442: my ($symb,$courseid,$udom,$uname)=&whichuser();
3443: if ($argsymb) { $symb=$argsymb; }
3444: my ($map,$id,$res)=&decode_symb($symb);
3445: if ($type eq 'course') {
3446: $res='course';
3447: } elsif ($type eq 'map') {
3448: $res=&symbread($map);
3449: } else {
3450: $res=$symb;
3451: }
3452: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3453: return $times{"$courseid\0$res"};
3454: }
3455:
3456: sub set_first_access {
3457: my ($type)=@_;
3458: my ($symb,$courseid,$udom,$uname)=&whichuser();
3459: my ($map,$id,$res)=&decode_symb($symb);
3460: if ($type eq 'course') {
3461: $res='course';
3462: } elsif ($type eq 'map') {
3463: $res=&symbread($map);
3464: } else {
3465: $res=$symb;
3466: }
3467: my $firstaccess=&get_first_access($type,$symb);
3468: if (!$firstaccess) {
3469: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3470: }
3471: return 'already_set';
3472: }
3473:
3474: # --------------------------------------------- Set Expire Date for Spreadsheet
3475:
3476: sub expirespread {
3477: my ($uname,$udom,$stype,$usymb)=@_;
3478: my $cid=$env{'request.course.id'};
3479: if ($cid) {
3480: my $now=time;
3481: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3482: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3483: $env{'course.'.$cid.'.num'}.
3484: ':nohist_expirationdates:'.
3485: &escape($key).'='.$now,
3486: $env{'course.'.$cid.'.home'})
3487: }
3488: return 'ok';
3489: }
3490:
3491: # ----------------------------------------------------- Devalidate Spreadsheets
3492:
3493: sub devalidate {
3494: my ($symb,$uname,$udom)=@_;
3495: my $cid=$env{'request.course.id'};
3496: if ($cid) {
3497: # delete the stored spreadsheets for
3498: # - the student level sheet of this user in course's homespace
3499: # - the assessment level sheet for this resource
3500: # for this user in user's homespace
3501: # - current conditional state info
3502: my $key=$uname.':'.$udom.':';
3503: my $status=
3504: &del('nohist_calculatedsheets',
3505: [$key.'studentcalc:'],
3506: $env{'course.'.$cid.'.domain'},
3507: $env{'course.'.$cid.'.num'})
3508: .' '.
3509: &del('nohist_calculatedsheets_'.$cid,
3510: [$key.'assesscalc:'.$symb],$udom,$uname);
3511: unless ($status eq 'ok ok') {
3512: &logthis('Could not devalidate spreadsheet '.
3513: $uname.' at '.$udom.' for '.
3514: $symb.': '.$status);
3515: }
3516: &delenv('user.state.'.$cid);
3517: }
3518: }
3519:
3520: sub get_scalar {
3521: my ($string,$end) = @_;
3522: my $value;
3523: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3524: $value = $1;
3525: } elsif ($$string =~ s/^([^&]*?)&//) {
3526: $value = $1;
3527: }
3528: return &unescape($value);
3529: }
3530:
3531: sub array2str {
3532: my (@array) = @_;
3533: my $result=&arrayref2str(\@array);
3534: $result=~s/^__ARRAY_REF__//;
3535: $result=~s/__END_ARRAY_REF__$//;
3536: return $result;
3537: }
3538:
3539: sub arrayref2str {
3540: my ($arrayref) = @_;
3541: my $result='__ARRAY_REF__';
3542: foreach my $elem (@$arrayref) {
3543: if(ref($elem) eq 'ARRAY') {
3544: $result.=&arrayref2str($elem).'&';
3545: } elsif(ref($elem) eq 'HASH') {
3546: $result.=&hashref2str($elem).'&';
3547: } elsif(ref($elem)) {
3548: #print("Got a ref of ".(ref($elem))." skipping.");
3549: } else {
3550: $result.=&escape($elem).'&';
3551: }
3552: }
3553: $result=~s/\&$//;
3554: $result .= '__END_ARRAY_REF__';
3555: return $result;
3556: }
3557:
3558: sub hash2str {
3559: my (%hash) = @_;
3560: my $result=&hashref2str(\%hash);
3561: $result=~s/^__HASH_REF__//;
3562: $result=~s/__END_HASH_REF__$//;
3563: return $result;
3564: }
3565:
3566: sub hashref2str {
3567: my ($hashref)=@_;
3568: my $result='__HASH_REF__';
3569: foreach my $key (sort(keys(%$hashref))) {
3570: if (ref($key) eq 'ARRAY') {
3571: $result.=&arrayref2str($key).'=';
3572: } elsif (ref($key) eq 'HASH') {
3573: $result.=&hashref2str($key).'=';
3574: } elsif (ref($key)) {
3575: $result.='=';
3576: #print("Got a ref of ".(ref($key))." skipping.");
3577: } else {
3578: if ($key) {$result.=&escape($key).'=';} else { last; }
3579: }
3580:
3581: if(ref($hashref->{$key}) eq 'ARRAY') {
3582: $result.=&arrayref2str($hashref->{$key}).'&';
3583: } elsif(ref($hashref->{$key}) eq 'HASH') {
3584: $result.=&hashref2str($hashref->{$key}).'&';
3585: } elsif(ref($hashref->{$key})) {
3586: $result.='&';
3587: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3588: } else {
3589: $result.=&escape($hashref->{$key}).'&';
3590: }
3591: }
3592: $result=~s/\&$//;
3593: $result .= '__END_HASH_REF__';
3594: return $result;
3595: }
3596:
3597: sub str2hash {
3598: my ($string)=@_;
3599: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3600: return %$hash;
3601: }
3602:
3603: sub str2hashref {
3604: my ($string) = @_;
3605:
3606: my %hash;
3607:
3608: if($string !~ /^__HASH_REF__/) {
3609: if (! ($string eq '' || !defined($string))) {
3610: $hash{'error'}='Not hash reference';
3611: }
3612: return (\%hash, $string);
3613: }
3614:
3615: $string =~ s/^__HASH_REF__//;
3616:
3617: while($string !~ /^__END_HASH_REF__/) {
3618: #key
3619: my $key='';
3620: if($string =~ /^__HASH_REF__/) {
3621: ($key, $string)=&str2hashref($string);
3622: if(defined($key->{'error'})) {
3623: $hash{'error'}='Bad data';
3624: return (\%hash, $string);
3625: }
3626: } elsif($string =~ /^__ARRAY_REF__/) {
3627: ($key, $string)=&str2arrayref($string);
3628: if($key->[0] eq 'Array reference error') {
3629: $hash{'error'}='Bad data';
3630: return (\%hash, $string);
3631: }
3632: } else {
3633: $string =~ s/^(.*?)=//;
3634: $key=&unescape($1);
3635: }
3636: $string =~ s/^=//;
3637:
3638: #value
3639: my $value='';
3640: if($string =~ /^__HASH_REF__/) {
3641: ($value, $string)=&str2hashref($string);
3642: if(defined($value->{'error'})) {
3643: $hash{'error'}='Bad data';
3644: return (\%hash, $string);
3645: }
3646: } elsif($string =~ /^__ARRAY_REF__/) {
3647: ($value, $string)=&str2arrayref($string);
3648: if($value->[0] eq 'Array reference error') {
3649: $hash{'error'}='Bad data';
3650: return (\%hash, $string);
3651: }
3652: } else {
3653: $value=&get_scalar(\$string,'__END_HASH_REF__');
3654: }
3655: $string =~ s/^&//;
3656:
3657: $hash{$key}=$value;
3658: }
3659:
3660: $string =~ s/^__END_HASH_REF__//;
3661:
3662: return (\%hash, $string);
3663: }
3664:
3665: sub str2array {
3666: my ($string)=@_;
3667: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3668: return @$array;
3669: }
3670:
3671: sub str2arrayref {
3672: my ($string) = @_;
3673: my @array;
3674:
3675: if($string !~ /^__ARRAY_REF__/) {
3676: if (! ($string eq '' || !defined($string))) {
3677: $array[0]='Array reference error';
3678: }
3679: return (\@array, $string);
3680: }
3681:
3682: $string =~ s/^__ARRAY_REF__//;
3683:
3684: while($string !~ /^__END_ARRAY_REF__/) {
3685: my $value='';
3686: if($string =~ /^__HASH_REF__/) {
3687: ($value, $string)=&str2hashref($string);
3688: if(defined($value->{'error'})) {
3689: $array[0] ='Array reference error';
3690: return (\@array, $string);
3691: }
3692: } elsif($string =~ /^__ARRAY_REF__/) {
3693: ($value, $string)=&str2arrayref($string);
3694: if($value->[0] eq 'Array reference error') {
3695: $array[0] ='Array reference error';
3696: return (\@array, $string);
3697: }
3698: } else {
3699: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3700: }
3701: $string =~ s/^&//;
3702:
3703: push(@array, $value);
3704: }
3705:
3706: $string =~ s/^__END_ARRAY_REF__//;
3707:
3708: return (\@array, $string);
3709: }
3710:
3711: # -------------------------------------------------------------------Temp Store
3712:
3713: sub tmpreset {
3714: my ($symb,$namespace,$domain,$stuname) = @_;
3715: if (!$symb) {
3716: $symb=&symbread();
3717: if (!$symb) { $symb= $env{'request.url'}; }
3718: }
3719: $symb=escape($symb);
3720:
3721: if (!$namespace) { $namespace=$env{'request.state'}; }
3722: $namespace=~s/\//\_/g;
3723: $namespace=~s/\W//g;
3724:
3725: if (!$domain) { $domain=$env{'user.domain'}; }
3726: if (!$stuname) { $stuname=$env{'user.name'}; }
3727: if ($domain eq 'public' && $stuname eq 'public') {
3728: $stuname=$ENV{'REMOTE_ADDR'};
3729: }
3730: my $path=$perlvar{'lonDaemons'}.'/tmp';
3731: my %hash;
3732: if (tie(%hash,'GDBM_File',
3733: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3734: &GDBM_WRCREAT(),0640)) {
3735: foreach my $key (keys(%hash)) {
3736: if ($key=~ /:$symb/) {
3737: delete($hash{$key});
3738: }
3739: }
3740: }
3741: }
3742:
3743: sub tmpstore {
3744: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3745:
3746: if (!$symb) {
3747: $symb=&symbread();
3748: if (!$symb) { $symb= $env{'request.url'}; }
3749: }
3750: $symb=escape($symb);
3751:
3752: if (!$namespace) {
3753: # I don't think we would ever want to store this for a course.
3754: # it seems this will only be used if we don't have a course.
3755: #$namespace=$env{'request.course.id'};
3756: #if (!$namespace) {
3757: $namespace=$env{'request.state'};
3758: #}
3759: }
3760: $namespace=~s/\//\_/g;
3761: $namespace=~s/\W//g;
3762: if (!$domain) { $domain=$env{'user.domain'}; }
3763: if (!$stuname) { $stuname=$env{'user.name'}; }
3764: if ($domain eq 'public' && $stuname eq 'public') {
3765: $stuname=$ENV{'REMOTE_ADDR'};
3766: }
3767: my $now=time;
3768: my %hash;
3769: my $path=$perlvar{'lonDaemons'}.'/tmp';
3770: if (tie(%hash,'GDBM_File',
3771: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3772: &GDBM_WRCREAT(),0640)) {
3773: $hash{"version:$symb"}++;
3774: my $version=$hash{"version:$symb"};
3775: my $allkeys='';
3776: foreach my $key (keys(%$storehash)) {
3777: $allkeys.=$key.':';
3778: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3779: }
3780: $hash{"$version:$symb:timestamp"}=$now;
3781: $allkeys.='timestamp';
3782: $hash{"$version:keys:$symb"}=$allkeys;
3783: if (untie(%hash)) {
3784: return 'ok';
3785: } else {
3786: return "error:$!";
3787: }
3788: } else {
3789: return "error:$!";
3790: }
3791: }
3792:
3793: # -----------------------------------------------------------------Temp Restore
3794:
3795: sub tmprestore {
3796: my ($symb,$namespace,$domain,$stuname) = @_;
3797:
3798: if (!$symb) {
3799: $symb=&symbread();
3800: if (!$symb) { $symb= $env{'request.url'}; }
3801: }
3802: $symb=escape($symb);
3803:
3804: if (!$namespace) { $namespace=$env{'request.state'}; }
3805:
3806: if (!$domain) { $domain=$env{'user.domain'}; }
3807: if (!$stuname) { $stuname=$env{'user.name'}; }
3808: if ($domain eq 'public' && $stuname eq 'public') {
3809: $stuname=$ENV{'REMOTE_ADDR'};
3810: }
3811: my %returnhash;
3812: $namespace=~s/\//\_/g;
3813: $namespace=~s/\W//g;
3814: my %hash;
3815: my $path=$perlvar{'lonDaemons'}.'/tmp';
3816: if (tie(%hash,'GDBM_File',
3817: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3818: &GDBM_READER(),0640)) {
3819: my $version=$hash{"version:$symb"};
3820: $returnhash{'version'}=$version;
3821: my $scope;
3822: for ($scope=1;$scope<=$version;$scope++) {
3823: my $vkeys=$hash{"$scope:keys:$symb"};
3824: my @keys=split(/:/,$vkeys);
3825: my $key;
3826: $returnhash{"$scope:keys"}=$vkeys;
3827: foreach $key (@keys) {
3828: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3829: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3830: }
3831: }
3832: if (!(untie(%hash))) {
3833: return "error:$!";
3834: }
3835: } else {
3836: return "error:$!";
3837: }
3838: return %returnhash;
3839: }
3840:
3841: # ----------------------------------------------------------------------- Store
3842:
3843: sub store {
3844: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3845: my $home='';
3846:
3847: if ($stuname) { $home=&homeserver($stuname,$domain); }
3848:
3849: $symb=&symbclean($symb);
3850: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3851:
3852: if (!$domain) { $domain=$env{'user.domain'}; }
3853: if (!$stuname) { $stuname=$env{'user.name'}; }
3854:
3855: &devalidate($symb,$stuname,$domain);
3856:
3857: $symb=escape($symb);
3858: if (!$namespace) {
3859: unless ($namespace=$env{'request.course.id'}) {
3860: return '';
3861: }
3862: }
3863: if (!$home) { $home=$env{'user.home'}; }
3864:
3865: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3866: $$storehash{'host'}=$perlvar{'lonHostID'};
3867:
3868: my $namevalue='';
3869: foreach my $key (keys(%$storehash)) {
3870: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3871: }
3872: $namevalue=~s/\&$//;
3873: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3874: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3875: }
3876:
3877: # -------------------------------------------------------------- Critical Store
3878:
3879: sub cstore {
3880: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3881: my $home='';
3882:
3883: if ($stuname) { $home=&homeserver($stuname,$domain); }
3884:
3885: $symb=&symbclean($symb);
3886: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3887:
3888: if (!$domain) { $domain=$env{'user.domain'}; }
3889: if (!$stuname) { $stuname=$env{'user.name'}; }
3890:
3891: &devalidate($symb,$stuname,$domain);
3892:
3893: $symb=escape($symb);
3894: if (!$namespace) {
3895: unless ($namespace=$env{'request.course.id'}) {
3896: return '';
3897: }
3898: }
3899: if (!$home) { $home=$env{'user.home'}; }
3900:
3901: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3902: $$storehash{'host'}=$perlvar{'lonHostID'};
3903:
3904: my $namevalue='';
3905: foreach my $key (keys(%$storehash)) {
3906: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3907: }
3908: $namevalue=~s/\&$//;
3909: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3910: return critical
3911: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3912: }
3913:
3914: # --------------------------------------------------------------------- Restore
3915:
3916: sub restore {
3917: my ($symb,$namespace,$domain,$stuname) = @_;
3918: my $home='';
3919:
3920: if ($stuname) { $home=&homeserver($stuname,$domain); }
3921:
3922: if (!$symb) {
3923: unless ($symb=escape(&symbread())) { return ''; }
3924: } else {
3925: $symb=&escape(&symbclean($symb));
3926: }
3927: if (!$namespace) {
3928: unless ($namespace=$env{'request.course.id'}) {
3929: return '';
3930: }
3931: }
3932: if (!$domain) { $domain=$env{'user.domain'}; }
3933: if (!$stuname) { $stuname=$env{'user.name'}; }
3934: if (!$home) { $home=$env{'user.home'}; }
3935: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3936:
3937: my %returnhash=();
3938: foreach my $line (split(/\&/,$answer)) {
3939: my ($name,$value)=split(/\=/,$line);
3940: $returnhash{&unescape($name)}=&thaw_unescape($value);
3941: }
3942: my $version;
3943: for ($version=1;$version<=$returnhash{'version'};$version++) {
3944: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3945: $returnhash{$item}=$returnhash{$version.':'.$item};
3946: }
3947: }
3948: return %returnhash;
3949: }
3950:
3951: # ---------------------------------------------------------- Course Description
3952:
3953: sub coursedescription {
3954: my ($courseid,$args)=@_;
3955: $courseid=~s/^\///;
3956: $courseid=~s/\_/\//g;
3957: my ($cdomain,$cnum)=split(/\//,$courseid);
3958: my $chome=&homeserver($cnum,$cdomain);
3959: my $normalid=$cdomain.'_'.$cnum;
3960: # need to always cache even if we get errors otherwise we keep
3961: # trying and trying and trying to get the course description.
3962: my %envhash=();
3963: my %returnhash=();
3964:
3965: my $expiretime=600;
3966: if ($env{'request.course.id'} eq $normalid) {
3967: $expiretime=120;
3968: }
3969:
3970: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3971: if (!$args->{'freshen_cache'}
3972: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3973: foreach my $key (keys(%env)) {
3974: next if ($key !~ /^\Q$prefix\E(.*)/);
3975: my ($setting) = $1;
3976: $returnhash{$setting} = $env{$key};
3977: }
3978: return %returnhash;
3979: }
3980:
3981: # get the data agin
3982: if (!$args->{'one_time'}) {
3983: $envhash{'course.'.$normalid.'.last_cache'}=time;
3984: }
3985:
3986: if ($chome ne 'no_host') {
3987: %returnhash=&dump('environment',$cdomain,$cnum);
3988: if (!exists($returnhash{'con_lost'})) {
3989: $returnhash{'home'}= $chome;
3990: $returnhash{'domain'} = $cdomain;
3991: $returnhash{'num'} = $cnum;
3992: if (!defined($returnhash{'type'})) {
3993: $returnhash{'type'} = 'Course';
3994: }
3995: while (my ($name,$value) = each %returnhash) {
3996: $envhash{'course.'.$normalid.'.'.$name}=$value;
3997: }
3998: $returnhash{'url'}=&clutter($returnhash{'url'});
3999: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
4000: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
4001: $envhash{'course.'.$normalid.'.home'}=$chome;
4002: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4003: $envhash{'course.'.$normalid.'.num'}=$cnum;
4004: }
4005: }
4006: if (!$args->{'one_time'}) {
4007: &appenv(\%envhash);
4008: }
4009: return %returnhash;
4010: }
4011:
4012: sub update_released_required {
4013: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4014: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4015: $cid = $env{'request.course.id'};
4016: $cdom = $env{'course.'.$cid.'.domain'};
4017: $cnum = $env{'course.'.$cid.'.num'};
4018: $chome = $env{'course.'.$cid.'.home'};
4019: }
4020: if ($needsrelease) {
4021: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4022: my $needsupdate;
4023: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4024: $needsupdate = 1;
4025: } else {
4026: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4027: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4028: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4029: $needsupdate = 1;
4030: }
4031: }
4032: if ($needsupdate) {
4033: my %needshash = (
4034: 'internal.releaserequired' => $needsrelease,
4035: );
4036: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4037: if ($putresult eq 'ok') {
4038: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4039: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4040: if (ref($crsinfo{$cid}) eq 'HASH') {
4041: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4042: &courseidput($cdom,\%crsinfo,$chome,'notime');
4043: }
4044: }
4045: }
4046: }
4047: return;
4048: }
4049:
4050: # -------------------------------------------------See if a user is privileged
4051:
4052: sub privileged {
4053: my ($username,$domain)=@_;
4054: my $rolesdump=&reply("dump:$domain:$username:roles",
4055: &homeserver($username,$domain));
4056: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4057: ($rolesdump =~ /^error:/)) {
4058: return 0;
4059: }
4060: my $now=time;
4061: if ($rolesdump ne '') {
4062: foreach my $entry (split(/&/,$rolesdump)) {
4063: if ($entry!~/^rolesdef_/) {
4064: my ($area,$role)=split(/=/,$entry);
4065: $area=~s/\_\w\w$//;
4066: my ($trole,$tend,$tstart)=split(/_/,$role);
4067: if (($trole eq 'dc') || ($trole eq 'su')) {
4068: my $active=1;
4069: if ($tend) {
4070: if ($tend<$now) { $active=0; }
4071: }
4072: if ($tstart) {
4073: if ($tstart>$now) { $active=0; }
4074: }
4075: if ($active) { return 1; }
4076: }
4077: }
4078: }
4079: }
4080: return 0;
4081: }
4082:
4083: # -------------------------------------------------------- Get user privileges
4084:
4085: sub rolesinit {
4086: my ($domain,$username,$authhost)=@_;
4087: my $now=time;
4088: my %userroles = ('user.login.time' => $now);
4089: my $extra = &freeze_escape({'skipcheck' => 1});
4090: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4091: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4092: ($rolesdump =~ /^error:/)) {
4093: return \%userroles;
4094: }
4095: my %allroles=();
4096: my %allgroups=();
4097:
4098: if ($rolesdump ne '') {
4099: foreach my $entry (split(/&/,$rolesdump)) {
4100: if ($entry!~/^rolesdef_/) {
4101: my ($area,$role)=split(/=/,$entry);
4102: $area=~s/\_\w\w$//;
4103: my ($trole,$tend,$tstart,$group_privs);
4104: if ($role=~/^cr/) {
4105: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4106: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4107: ($tend,$tstart)=split('_',$trest);
4108: } else {
4109: $trole=$role;
4110: }
4111: } elsif ($role =~ m|^gr/|) {
4112: ($trole,$tend,$tstart) = split(/_/,$role);
4113: next if ($tstart eq '-1');
4114: ($trole,$group_privs) = split(/\//,$trole);
4115: $group_privs = &unescape($group_privs);
4116: } else {
4117: ($trole,$tend,$tstart)=split(/_/,$role);
4118: }
4119: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4120: $username);
4121: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4122: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4123: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4124: if (($area ne '') && ($trole ne '')) {
4125: my $spec=$trole.'.'.$area;
4126: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4127: if ($trole =~ /^cr\//) {
4128: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4129: } elsif ($trole eq 'gr') {
4130: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4131: } else {
4132: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4133: }
4134: }
4135: }
4136: }
4137: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4138: $userroles{'user.adv'} = $adv;
4139: $userroles{'user.author'} = $author;
4140: $env{'user.adv'}=$adv;
4141: }
4142: return \%userroles;
4143: }
4144:
4145: sub set_arearole {
4146: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4147: # log the associated role with the area
4148: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4149: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4150: }
4151:
4152: sub custom_roleprivs {
4153: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4154: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4155: my $homsvr=homeserver($rauthor,$rdomain);
4156: if (&hostname($homsvr) ne '') {
4157: my ($rdummy,$roledef)=
4158: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4159: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4160: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4161: if (defined($syspriv)) {
4162: if ($trest =~ /^$match_community$/) {
4163: $syspriv =~ s/bre\&S//;
4164: }
4165: $$allroles{'cm./'}.=':'.$syspriv;
4166: $$allroles{$spec.'./'}.=':'.$syspriv;
4167: }
4168: if ($tdomain ne '') {
4169: if (defined($dompriv)) {
4170: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4171: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4172: }
4173: if (($trest ne '') && (defined($coursepriv))) {
4174: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4175: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4176: }
4177: }
4178: }
4179: }
4180: }
4181:
4182: sub group_roleprivs {
4183: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4184: my $access = 1;
4185: my $now = time;
4186: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4187: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4188: if ($access) {
4189: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4190: $$allgroups{$course}{$group} .=':'.$group_privs;
4191: }
4192: }
4193:
4194: sub standard_roleprivs {
4195: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4196: if (defined($pr{$trole.':s'})) {
4197: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4198: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4199: }
4200: if ($tdomain ne '') {
4201: if (defined($pr{$trole.':d'})) {
4202: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4203: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4204: }
4205: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4206: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4207: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4208: }
4209: }
4210: }
4211:
4212: sub set_userprivs {
4213: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4214: my $author=0;
4215: my $adv=0;
4216: my %grouproles = ();
4217: if (keys(%{$allgroups}) > 0) {
4218: my @groupkeys;
4219: foreach my $role (keys(%{$allroles})) {
4220: push(@groupkeys,$role);
4221: }
4222: if (ref($groups_roles) eq 'HASH') {
4223: foreach my $key (keys(%{$groups_roles})) {
4224: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4225: push(@groupkeys,$key);
4226: }
4227: }
4228: }
4229: if (@groupkeys > 0) {
4230: foreach my $role (@groupkeys) {
4231: my ($trole,$area,$sec,$extendedarea);
4232: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4233: $trole = $1;
4234: $area = $2;
4235: $sec = $3;
4236: $extendedarea = $area.$sec;
4237: if (exists($$allgroups{$area})) {
4238: foreach my $group (keys(%{$$allgroups{$area}})) {
4239: my $spec = $trole.'.'.$extendedarea;
4240: $grouproles{$spec.'.'.$area.'/'.$group} =
4241: $$allgroups{$area}{$group};
4242: }
4243: }
4244: }
4245: }
4246: }
4247: }
4248: foreach my $group (keys(%grouproles)) {
4249: $$allroles{$group} = $grouproles{$group};
4250: }
4251: foreach my $role (keys(%{$allroles})) {
4252: my %thesepriv;
4253: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4254: foreach my $item (split(/:/,$$allroles{$role})) {
4255: if ($item ne '') {
4256: my ($privilege,$restrictions)=split(/&/,$item);
4257: if ($restrictions eq '') {
4258: $thesepriv{$privilege}='F';
4259: } elsif ($thesepriv{$privilege} ne 'F') {
4260: $thesepriv{$privilege}.=$restrictions;
4261: }
4262: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4263: }
4264: }
4265: my $thesestr='';
4266: foreach my $priv (sort(keys(%thesepriv))) {
4267: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4268: }
4269: $userroles->{'user.priv.'.$role} = $thesestr;
4270: }
4271: return ($author,$adv);
4272: }
4273:
4274: sub role_status {
4275: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4276: my @pwhere = ();
4277: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4278: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4279: unless (!defined($$role) || $$role eq '') {
4280: $$where=join('.',@pwhere);
4281: $$trolecode=$$role.'.'.$$where;
4282: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4283: $$tstatus='is';
4284: if ($$tstart && $$tstart>$update) {
4285: $$tstatus='future';
4286: if ($$tstart<$now) {
4287: if ($$tstart && $$tstart>$refresh) {
4288: if (($$where ne '') && ($$role ne '')) {
4289: my (%allroles,%allgroups,$group_privs,
4290: %groups_roles,@rolecodes);
4291: my %userroles = (
4292: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4293: );
4294: @rolecodes = ('cm');
4295: my $spec=$$role.'.'.$$where;
4296: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4297: if ($$role =~ /^cr\//) {
4298: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4299: push(@rolecodes,'cr');
4300: } elsif ($$role eq 'gr') {
4301: push(@rolecodes,$$role);
4302: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4303: $env{'user.name'});
4304: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4305: (undef,my $group_privs) = split(/\//,$trole);
4306: $group_privs = &unescape($group_privs);
4307: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4308: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4309: &get_groups_roles($tdomain,$trest,
4310: \%course_roles,\@rolecodes,
4311: \%groups_roles);
4312: } else {
4313: push(@rolecodes,$$role);
4314: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4315: }
4316: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4317: &appenv(\%userroles,\@rolecodes);
4318: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4319: }
4320: }
4321: $$tstatus = 'is';
4322: }
4323: }
4324: if ($$tend) {
4325: if ($$tend<$update) {
4326: $$tstatus='expired';
4327: } elsif ($$tend<$now) {
4328: $$tstatus='will_not';
4329: }
4330: }
4331: }
4332: }
4333: }
4334:
4335: sub get_groups_roles {
4336: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4337: return unless((ref($cdom_courseroles) eq 'HASH') &&
4338: (ref($rolecodes) eq 'ARRAY') &&
4339: (ref($groups_roles) eq 'HASH'));
4340: if (keys(%{$cdom_courseroles}) > 0) {
4341: my ($cnum) = ($rest =~ /^($match_courseid)/);
4342: if ($cdom ne '' && $cnum ne '') {
4343: foreach my $key (keys(%{$cdom_courseroles})) {
4344: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4345: my $crsrole = $1;
4346: my $crssec = $2;
4347: if ($crsrole =~ /^cr/) {
4348: unless (grep(/^cr$/,@{$rolecodes})) {
4349: push(@{$rolecodes},'cr');
4350: }
4351: } else {
4352: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4353: push(@{$rolecodes},$crsrole);
4354: }
4355: }
4356: my $rolekey = "$crsrole./$cdom/$cnum";
4357: if ($crssec ne '') {
4358: $rolekey .= "/$crssec";
4359: }
4360: $rolekey .= './';
4361: $groups_roles->{$rolekey} = $rolecodes;
4362: }
4363: }
4364: }
4365: }
4366: return;
4367: }
4368:
4369: sub delete_env_groupprivs {
4370: my ($where,$courseroles,$possroles) = @_;
4371: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4372: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4373: unless (ref($courseroles->{$udom}) eq 'HASH') {
4374: %{$courseroles->{$udom}} =
4375: &get_my_roles('','','userroles',['active'],
4376: $possroles,[$udom],1);
4377: }
4378: if (ref($courseroles->{$udom}) eq 'HASH') {
4379: foreach my $item (keys(%{$courseroles->{$udom}})) {
4380: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4381: my $area = '/'.$cdom.'/'.$cnum;
4382: my $privkey = "user.priv.$crsrole.$area";
4383: if ($crssec ne '') {
4384: $privkey .= '/'.$crssec;
4385: }
4386: $privkey .= ".$area/$group";
4387: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
4388: }
4389: }
4390: return;
4391: }
4392:
4393: sub check_adhoc_privs {
4394: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
4395: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4396: if ($env{$cckey}) {
4397: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4398: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4399: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4400: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4401: }
4402: } else {
4403: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4404: }
4405: }
4406:
4407: sub set_adhoc_privileges {
4408: # role can be cc or ca
4409: my ($dcdom,$pickedcourse,$role,$caller) = @_;
4410: my $area = '/'.$dcdom.'/'.$pickedcourse;
4411: my $spec = $role.'.'.$area;
4412: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4413: $env{'user.name'});
4414: my %ccrole = ();
4415: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4416: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4417: &appenv(\%userroles,[$role,'cm']);
4418: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4419: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
4420: &appenv( {'request.role' => $spec,
4421: 'request.role.domain' => $dcdom,
4422: 'request.course.sec' => ''
4423: }
4424: );
4425: my $tadv=0;
4426: if (&allowed('adv') eq 'F') { $tadv=1; }
4427: &appenv({'request.role.adv' => $tadv});
4428: }
4429: }
4430:
4431: # --------------------------------------------------------------- get interface
4432:
4433: sub get {
4434: my ($namespace,$storearr,$udomain,$uname)=@_;
4435: my $items='';
4436: foreach my $item (@$storearr) {
4437: $items.=&escape($item).'&';
4438: }
4439: $items=~s/\&$//;
4440: if (!$udomain) { $udomain=$env{'user.domain'}; }
4441: if (!$uname) { $uname=$env{'user.name'}; }
4442: my $uhome=&homeserver($uname,$udomain);
4443:
4444: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4445: my @pairs=split(/\&/,$rep);
4446: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4447: return @pairs;
4448: }
4449: my %returnhash=();
4450: my $i=0;
4451: foreach my $item (@$storearr) {
4452: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4453: $i++;
4454: }
4455: return %returnhash;
4456: }
4457:
4458: # --------------------------------------------------------------- del interface
4459:
4460: sub del {
4461: my ($namespace,$storearr,$udomain,$uname)=@_;
4462: my $items='';
4463: foreach my $item (@$storearr) {
4464: $items.=&escape($item).'&';
4465: }
4466:
4467: $items=~s/\&$//;
4468: if (!$udomain) { $udomain=$env{'user.domain'}; }
4469: if (!$uname) { $uname=$env{'user.name'}; }
4470: my $uhome=&homeserver($uname,$udomain);
4471: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4472: }
4473:
4474: # -------------------------------------------------------------- dump interface
4475:
4476: sub dump {
4477: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
4478: if (!$udomain) { $udomain=$env{'user.domain'}; }
4479: if (!$uname) { $uname=$env{'user.name'}; }
4480: my $uhome=&homeserver($uname,$udomain);
4481: if ($regexp) {
4482: $regexp=&escape($regexp);
4483: } else {
4484: $regexp='.';
4485: }
4486: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
4487: my @pairs=split(/\&/,$rep);
4488: my %returnhash=();
4489: if (!($rep =~ /^error/ )) {
4490: foreach my $item (@pairs) {
4491: my ($key,$value)=split(/=/,$item,2);
4492: $key = &unescape($key);
4493: next if ($key =~ /^error: 2 /);
4494: $returnhash{$key}=&thaw_unescape($value);
4495: }
4496: }
4497: return %returnhash;
4498: }
4499:
4500:
4501: # --------------------------------------------------------- dumpstore interface
4502:
4503: sub dumpstore {
4504: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4505: if (!$udomain) { $udomain=$env{'user.domain'}; }
4506: if (!$uname) { $uname=$env{'user.name'}; }
4507: my $uhome=&homeserver($uname,$udomain);
4508: if ($regexp) {
4509: $regexp=&escape($regexp);
4510: } else {
4511: $regexp='.';
4512: }
4513: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4514: my @pairs=split(/\&/,$rep);
4515: my %returnhash=();
4516: foreach my $item (@pairs) {
4517: my ($key,$value)=split(/=/,$item,2);
4518: next if ($key =~ /^error: 2 /);
4519: $returnhash{$key}=&thaw_unescape($value);
4520: }
4521: return %returnhash;
4522: }
4523:
4524: # -------------------------------------------------------------- keys interface
4525:
4526: sub getkeys {
4527: my ($namespace,$udomain,$uname)=@_;
4528: if (!$udomain) { $udomain=$env{'user.domain'}; }
4529: if (!$uname) { $uname=$env{'user.name'}; }
4530: my $uhome=&homeserver($uname,$udomain);
4531: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4532: my @keyarray=();
4533: foreach my $key (split(/\&/,$rep)) {
4534: next if ($key =~ /^error: 2 /);
4535: push(@keyarray,&unescape($key));
4536: }
4537: return @keyarray;
4538: }
4539:
4540: # --------------------------------------------------------------- currentdump
4541: sub currentdump {
4542: my ($courseid,$sdom,$sname)=@_;
4543: $courseid = $env{'request.course.id'} if (! defined($courseid));
4544: $sdom = $env{'user.domain'} if (! defined($sdom));
4545: $sname = $env{'user.name'} if (! defined($sname));
4546: my $uhome = &homeserver($sname,$sdom);
4547: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4548: return if ($rep =~ /^(error:|no_such_host)/);
4549: #
4550: my %returnhash=();
4551: #
4552: if ($rep eq "unknown_cmd") {
4553: # an old lond will not know currentdump
4554: # Do a dump and make it look like a currentdump
4555: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4556: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4557: my %hash = @tmp;
4558: @tmp=();
4559: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4560: } else {
4561: my @pairs=split(/\&/,$rep);
4562: foreach my $pair (@pairs) {
4563: my ($key,$value)=split(/=/,$pair,2);
4564: my ($symb,$param) = split(/:/,$key);
4565: $returnhash{&unescape($symb)}->{&unescape($param)} =
4566: &thaw_unescape($value);
4567: }
4568: }
4569: return %returnhash;
4570: }
4571:
4572: sub convert_dump_to_currentdump{
4573: my %hash = %{shift()};
4574: my %returnhash;
4575: # Code ripped from lond, essentially. The only difference
4576: # here is the unescaping done by lonnet::dump(). Conceivably
4577: # we might run in to problems with parameter names =~ /^v\./
4578: while (my ($key,$value) = each(%hash)) {
4579: my ($v,$symb,$param) = split(/:/,$key);
4580: $symb = &unescape($symb);
4581: $param = &unescape($param);
4582: next if ($v eq 'version' || $symb eq 'keys');
4583: next if (exists($returnhash{$symb}) &&
4584: exists($returnhash{$symb}->{$param}) &&
4585: $returnhash{$symb}->{'v.'.$param} > $v);
4586: $returnhash{$symb}->{$param}=$value;
4587: $returnhash{$symb}->{'v.'.$param}=$v;
4588: }
4589: #
4590: # Remove all of the keys in the hashes which keep track of
4591: # the version of the parameter.
4592: while (my ($symb,$param_hash) = each(%returnhash)) {
4593: # use a foreach because we are going to delete from the hash.
4594: foreach my $key (keys(%$param_hash)) {
4595: delete($param_hash->{$key}) if ($key =~ /^v\./);
4596: }
4597: }
4598: return \%returnhash;
4599: }
4600:
4601: # ------------------------------------------------------ critical inc interface
4602:
4603: sub cinc {
4604: return &inc(@_,'critical');
4605: }
4606:
4607: # --------------------------------------------------------------- inc interface
4608:
4609: sub inc {
4610: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4611: if (!$udomain) { $udomain=$env{'user.domain'}; }
4612: if (!$uname) { $uname=$env{'user.name'}; }
4613: my $uhome=&homeserver($uname,$udomain);
4614: my $items='';
4615: if (! ref($store)) {
4616: # got a single value, so use that instead
4617: $items = &escape($store).'=&';
4618: } elsif (ref($store) eq 'SCALAR') {
4619: $items = &escape($$store).'=&';
4620: } elsif (ref($store) eq 'ARRAY') {
4621: $items = join('=&',map {&escape($_);} @{$store});
4622: } elsif (ref($store) eq 'HASH') {
4623: while (my($key,$value) = each(%{$store})) {
4624: $items.= &escape($key).'='.&escape($value).'&';
4625: }
4626: }
4627: $items=~s/\&$//;
4628: if ($critical) {
4629: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4630: } else {
4631: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4632: }
4633: }
4634:
4635: # --------------------------------------------------------------- put interface
4636:
4637: sub put {
4638: my ($namespace,$storehash,$udomain,$uname)=@_;
4639: if (!$udomain) { $udomain=$env{'user.domain'}; }
4640: if (!$uname) { $uname=$env{'user.name'}; }
4641: my $uhome=&homeserver($uname,$udomain);
4642: my $items='';
4643: foreach my $item (keys(%$storehash)) {
4644: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4645: }
4646: $items=~s/\&$//;
4647: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4648: }
4649:
4650: # ------------------------------------------------------------ newput interface
4651:
4652: sub newput {
4653: my ($namespace,$storehash,$udomain,$uname)=@_;
4654: if (!$udomain) { $udomain=$env{'user.domain'}; }
4655: if (!$uname) { $uname=$env{'user.name'}; }
4656: my $uhome=&homeserver($uname,$udomain);
4657: my $items='';
4658: foreach my $key (keys(%$storehash)) {
4659: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4660: }
4661: $items=~s/\&$//;
4662: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4663: }
4664:
4665: # --------------------------------------------------------- putstore interface
4666:
4667: sub putstore {
4668: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4669: if (!$udomain) { $udomain=$env{'user.domain'}; }
4670: if (!$uname) { $uname=$env{'user.name'}; }
4671: my $uhome=&homeserver($uname,$udomain);
4672: my $items='';
4673: foreach my $key (keys(%$storehash)) {
4674: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4675: }
4676: $items=~s/\&$//;
4677: my $esc_symb=&escape($symb);
4678: my $esc_v=&escape($version);
4679: my $reply =
4680: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4681: $uhome);
4682: if ($reply eq 'unknown_cmd') {
4683: # gfall back to way things use to be done
4684: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4685: $uname);
4686: }
4687: return $reply;
4688: }
4689:
4690: sub old_putstore {
4691: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4692: if (!$udomain) { $udomain=$env{'user.domain'}; }
4693: if (!$uname) { $uname=$env{'user.name'}; }
4694: my $uhome=&homeserver($uname,$udomain);
4695: my %newstorehash;
4696: foreach my $item (keys(%$storehash)) {
4697: my $key = $version.':'.&escape($symb).':'.$item;
4698: $newstorehash{$key} = $storehash->{$item};
4699: }
4700: my $items='';
4701: my %allitems = ();
4702: foreach my $item (keys(%newstorehash)) {
4703: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4704: my $key = $1.':keys:'.$2;
4705: $allitems{$key} .= $3.':';
4706: }
4707: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4708: }
4709: foreach my $item (keys(%allitems)) {
4710: $allitems{$item} =~ s/\:$//;
4711: $items.= $item.'='.$allitems{$item}.'&';
4712: }
4713: $items=~s/\&$//;
4714: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4715: }
4716:
4717: # ------------------------------------------------------ critical put interface
4718:
4719: sub cput {
4720: my ($namespace,$storehash,$udomain,$uname)=@_;
4721: if (!$udomain) { $udomain=$env{'user.domain'}; }
4722: if (!$uname) { $uname=$env{'user.name'}; }
4723: my $uhome=&homeserver($uname,$udomain);
4724: my $items='';
4725: foreach my $item (keys(%$storehash)) {
4726: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4727: }
4728: $items=~s/\&$//;
4729: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4730: }
4731:
4732: # -------------------------------------------------------------- eget interface
4733:
4734: sub eget {
4735: my ($namespace,$storearr,$udomain,$uname)=@_;
4736: my $items='';
4737: foreach my $item (@$storearr) {
4738: $items.=&escape($item).'&';
4739: }
4740: $items=~s/\&$//;
4741: if (!$udomain) { $udomain=$env{'user.domain'}; }
4742: if (!$uname) { $uname=$env{'user.name'}; }
4743: my $uhome=&homeserver($uname,$udomain);
4744: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4745: my @pairs=split(/\&/,$rep);
4746: my %returnhash=();
4747: my $i=0;
4748: foreach my $item (@$storearr) {
4749: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4750: $i++;
4751: }
4752: return %returnhash;
4753: }
4754:
4755: # ------------------------------------------------------------ tmpput interface
4756: sub tmpput {
4757: my ($storehash,$server,$context)=@_;
4758: my $items='';
4759: foreach my $item (keys(%$storehash)) {
4760: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4761: }
4762: $items=~s/\&$//;
4763: if (defined($context)) {
4764: $items .= ':'.&escape($context);
4765: }
4766: return &reply("tmpput:$items",$server);
4767: }
4768:
4769: # ------------------------------------------------------------ tmpget interface
4770: sub tmpget {
4771: my ($token,$server)=@_;
4772: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4773: my $rep=&reply("tmpget:$token",$server);
4774: my %returnhash;
4775: foreach my $item (split(/\&/,$rep)) {
4776: my ($key,$value)=split(/=/,$item);
4777: next if ($key =~ /^error: 2 /);
4778: $returnhash{&unescape($key)}=&thaw_unescape($value);
4779: }
4780: return %returnhash;
4781: }
4782:
4783: # ------------------------------------------------------------ tmpget interface
4784: sub tmpdel {
4785: my ($token,$server)=@_;
4786: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4787: return &reply("tmpdel:$token",$server);
4788: }
4789:
4790: # -------------------------------------------------- portfolio access checking
4791:
4792: sub portfolio_access {
4793: my ($requrl) = @_;
4794: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4795: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4796: if ($result) {
4797: my %setters;
4798: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4799: my ($startblock,$endblock) =
4800: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4801: if ($startblock && $endblock) {
4802: return 'B';
4803: }
4804: } else {
4805: my ($startblock,$endblock) =
4806: &Apache::loncommon::blockcheck(\%setters,'port');
4807: if ($startblock && $endblock) {
4808: return 'B';
4809: }
4810: }
4811: }
4812: if ($result eq 'ok') {
4813: return 'F';
4814: } elsif ($result =~ /^[^:]+:guest_/) {
4815: return 'A';
4816: }
4817: return '';
4818: }
4819:
4820: sub get_portfolio_access {
4821: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4822:
4823: if (!ref($access_hash)) {
4824: my $current_perms = &get_portfile_permissions($udom,$unum);
4825: my %access_controls = &get_access_controls($current_perms,$group,
4826: $file_name);
4827: $access_hash = $access_controls{$file_name};
4828: }
4829:
4830: my ($public,$guest,@domains,@users,@courses,@groups);
4831: my $now = time;
4832: if (ref($access_hash) eq 'HASH') {
4833: foreach my $key (keys(%{$access_hash})) {
4834: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4835: if ($start > $now) {
4836: next;
4837: }
4838: if ($end && $end<$now) {
4839: next;
4840: }
4841: if ($scope eq 'public') {
4842: $public = $key;
4843: last;
4844: } elsif ($scope eq 'guest') {
4845: $guest = $key;
4846: } elsif ($scope eq 'domains') {
4847: push(@domains,$key);
4848: } elsif ($scope eq 'users') {
4849: push(@users,$key);
4850: } elsif ($scope eq 'course') {
4851: push(@courses,$key);
4852: } elsif ($scope eq 'group') {
4853: push(@groups,$key);
4854: }
4855: }
4856: if ($public) {
4857: return 'ok';
4858: }
4859: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4860: if ($guest) {
4861: return $guest;
4862: }
4863: } else {
4864: if (@domains > 0) {
4865: foreach my $domkey (@domains) {
4866: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4867: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4868: return 'ok';
4869: }
4870: }
4871: }
4872: }
4873: if (@users > 0) {
4874: foreach my $userkey (@users) {
4875: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4876: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4877: if (ref($item) eq 'HASH') {
4878: if (($item->{'uname'} eq $env{'user.name'}) &&
4879: ($item->{'udom'} eq $env{'user.domain'})) {
4880: return 'ok';
4881: }
4882: }
4883: }
4884: }
4885: }
4886: }
4887: my %roleshash;
4888: my @courses_and_groups = @courses;
4889: push(@courses_and_groups,@groups);
4890: if (@courses_and_groups > 0) {
4891: my (%allgroups,%allroles);
4892: my ($start,$end,$role,$sec,$group);
4893: foreach my $envkey (%env) {
4894: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4895: my $cid = $2.'_'.$3;
4896: if ($1 eq 'gr') {
4897: $group = $4;
4898: $allgroups{$cid}{$group} = $env{$envkey};
4899: } else {
4900: if ($4 eq '') {
4901: $sec = 'none';
4902: } else {
4903: $sec = $4;
4904: }
4905: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4906: }
4907: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4908: my $cid = $2.'_'.$3;
4909: if ($4 eq '') {
4910: $sec = 'none';
4911: } else {
4912: $sec = $4;
4913: }
4914: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4915: }
4916: }
4917: if (keys(%allroles) == 0) {
4918: return;
4919: }
4920: foreach my $key (@courses_and_groups) {
4921: my %content = %{$$access_hash{$key}};
4922: my $cnum = $content{'number'};
4923: my $cdom = $content{'domain'};
4924: my $cid = $cdom.'_'.$cnum;
4925: if (!exists($allroles{$cid})) {
4926: next;
4927: }
4928: foreach my $role_id (keys(%{$content{'roles'}})) {
4929: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4930: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4931: my @status = @{$content{'roles'}{$role_id}{'access'}};
4932: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4933: foreach my $role (keys(%{$allroles{$cid}})) {
4934: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4935: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4936: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4937: if (grep/^all$/,@sections) {
4938: return 'ok';
4939: } else {
4940: if (grep/^$sec$/,@sections) {
4941: return 'ok';
4942: }
4943: }
4944: }
4945: }
4946: if (keys(%{$allgroups{$cid}}) == 0) {
4947: if (grep/^none$/,@groups) {
4948: return 'ok';
4949: }
4950: } else {
4951: if (grep/^all$/,@groups) {
4952: return 'ok';
4953: }
4954: foreach my $group (keys(%{$allgroups{$cid}})) {
4955: if (grep/^$group$/,@groups) {
4956: return 'ok';
4957: }
4958: }
4959: }
4960: }
4961: }
4962: }
4963: }
4964: }
4965: if ($guest) {
4966: return $guest;
4967: }
4968: }
4969: }
4970: return;
4971: }
4972:
4973: sub course_group_datechecker {
4974: my ($dates,$now,$status) = @_;
4975: my ($start,$end) = split(/\./,$dates);
4976: if (!$start && !$end) {
4977: return 'ok';
4978: }
4979: if (grep/^active$/,@{$status}) {
4980: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4981: return 'ok';
4982: }
4983: }
4984: if (grep/^previous$/,@{$status}) {
4985: if ($end > $now ) {
4986: return 'ok';
4987: }
4988: }
4989: if (grep/^future$/,@{$status}) {
4990: if ($start > $now) {
4991: return 'ok';
4992: }
4993: }
4994: return;
4995: }
4996:
4997: sub parse_portfolio_url {
4998: my ($url) = @_;
4999:
5000: my ($type,$udom,$unum,$group,$file_name);
5001:
5002: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5003: $type = 1;
5004: $udom = $1;
5005: $unum = $2;
5006: $file_name = $3;
5007: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5008: $type = 2;
5009: $udom = $1;
5010: $unum = $2;
5011: $group = $3;
5012: $file_name = $3.'/'.$4;
5013: }
5014: if (wantarray) {
5015: return ($type,$udom,$unum,$file_name,$group);
5016: }
5017: return $type;
5018: }
5019:
5020: sub is_portfolio_url {
5021: my ($url) = @_;
5022: return scalar(&parse_portfolio_url($url));
5023: }
5024:
5025: sub is_portfolio_file {
5026: my ($file) = @_;
5027: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5028: return 1;
5029: }
5030: return;
5031: }
5032:
5033: sub usertools_access {
5034: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5035: my ($access,%tools);
5036: if ($context eq '') {
5037: $context = 'tools';
5038: }
5039: if ($context eq 'requestcourses') {
5040: %tools = (
5041: official => 1,
5042: unofficial => 1,
5043: community => 1,
5044: );
5045: } else {
5046: %tools = (
5047: aboutme => 1,
5048: blog => 1,
5049: portfolio => 1,
5050: );
5051: }
5052: return if (!defined($tools{$tool}));
5053:
5054: if ((!defined($udom)) || (!defined($uname))) {
5055: $udom = $env{'user.domain'};
5056: $uname = $env{'user.name'};
5057: }
5058:
5059: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5060: if ($action ne 'reload') {
5061: if ($context eq 'requestcourses') {
5062: return $env{'environment.canrequest.'.$tool};
5063: } else {
5064: return $env{'environment.availabletools.'.$tool};
5065: }
5066: }
5067: }
5068:
5069: my ($toolstatus,$inststatus);
5070:
5071: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5072: ($action ne 'reload')) {
5073: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5074: $inststatus = $env{'environment.inststatus'};
5075: } else {
5076: if (ref($userenvref) eq 'HASH') {
5077: $toolstatus = $userenvref->{$context.'.'.$tool};
5078: $inststatus = $userenvref->{'inststatus'};
5079: } else {
5080: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5081: $toolstatus = $userenv{$context.'.'.$tool};
5082: $inststatus = $userenv{'inststatus'};
5083: }
5084: }
5085:
5086: if ($toolstatus ne '') {
5087: if ($toolstatus) {
5088: $access = 1;
5089: } else {
5090: $access = 0;
5091: }
5092: return $access;
5093: }
5094:
5095: my ($is_adv,%domdef);
5096: if (ref($is_advref) eq 'HASH') {
5097: $is_adv = $is_advref->{'is_adv'};
5098: } else {
5099: $is_adv = &is_advanced_user($udom,$uname);
5100: }
5101: if (ref($domdefref) eq 'HASH') {
5102: %domdef = %{$domdefref};
5103: } else {
5104: %domdef = &get_domain_defaults($udom);
5105: }
5106: if (ref($domdef{$tool}) eq 'HASH') {
5107: if ($is_adv) {
5108: if ($domdef{$tool}{'_LC_adv'} ne '') {
5109: if ($domdef{$tool}{'_LC_adv'}) {
5110: $access = 1;
5111: } else {
5112: $access = 0;
5113: }
5114: return $access;
5115: }
5116: }
5117: if ($inststatus ne '') {
5118: my ($hasaccess,$hasnoaccess);
5119: foreach my $affiliation (split(/:/,$inststatus)) {
5120: if ($domdef{$tool}{$affiliation} ne '') {
5121: if ($domdef{$tool}{$affiliation}) {
5122: $hasaccess = 1;
5123: } else {
5124: $hasnoaccess = 1;
5125: }
5126: }
5127: }
5128: if ($hasaccess || $hasnoaccess) {
5129: if ($hasaccess) {
5130: $access = 1;
5131: } elsif ($hasnoaccess) {
5132: $access = 0;
5133: }
5134: return $access;
5135: }
5136: } else {
5137: if ($domdef{$tool}{'default'} ne '') {
5138: if ($domdef{$tool}{'default'}) {
5139: $access = 1;
5140: } elsif ($domdef{$tool}{'default'} == 0) {
5141: $access = 0;
5142: }
5143: return $access;
5144: }
5145: }
5146: } else {
5147: if ($context eq 'tools') {
5148: $access = 1;
5149: } else {
5150: $access = 0;
5151: }
5152: return $access;
5153: }
5154: }
5155:
5156: sub is_course_owner {
5157: my ($cdom,$cnum,$udom,$uname) = @_;
5158: if (($udom eq '') || ($uname eq '')) {
5159: $udom = $env{'user.domain'};
5160: $uname = $env{'user.name'};
5161: }
5162: unless (($udom eq '') || ($uname eq '')) {
5163: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5164: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5165: return 1;
5166: } else {
5167: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5168: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5169: return 1;
5170: }
5171: }
5172: }
5173: }
5174: return;
5175: }
5176:
5177: sub is_advanced_user {
5178: my ($udom,$uname) = @_;
5179: if ($udom ne '' && $uname ne '') {
5180: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5181: return $env{'user.adv'};
5182: }
5183: }
5184: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5185: my %allroles;
5186: my $is_adv;
5187: foreach my $role (keys(%roleshash)) {
5188: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5189: my $area = '/'.$tdomain.'/'.$trest;
5190: if ($sec ne '') {
5191: $area .= '/'.$sec;
5192: }
5193: if (($area ne '') && ($trole ne '')) {
5194: my $spec=$trole.'.'.$area;
5195: if ($trole =~ /^cr\//) {
5196: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5197: } elsif ($trole ne 'gr') {
5198: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5199: }
5200: }
5201: }
5202: foreach my $role (keys(%allroles)) {
5203: last if ($is_adv);
5204: foreach my $item (split(/:/,$allroles{$role})) {
5205: if ($item ne '') {
5206: my ($privilege,$restrictions)=split(/&/,$item);
5207: if ($privilege eq 'adv') {
5208: $is_adv = 1;
5209: last;
5210: }
5211: }
5212: }
5213: }
5214: return $is_adv;
5215: }
5216:
5217: sub check_can_request {
5218: my ($dom,$can_request,$request_domains) = @_;
5219: my $canreq = 0;
5220: my ($types,$typename) = &Apache::loncommon::course_types();
5221: my @options = ('approval','validate','autolimit');
5222: my $optregex = join('|',@options);
5223: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5224: foreach my $type (@{$types}) {
5225: if (&usertools_access($env{'user.name'},
5226: $env{'user.domain'},
5227: $type,undef,'requestcourses')) {
5228: $canreq ++;
5229: if (ref($request_domains) eq 'HASH') {
5230: push(@{$request_domains->{$type}},$env{'user.domain'});
5231: }
5232: if ($dom eq $env{'user.domain'}) {
5233: $can_request->{$type} = 1;
5234: }
5235: }
5236: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5237: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5238: if (@curr > 0) {
5239: foreach my $item (@curr) {
5240: if (ref($request_domains) eq 'HASH') {
5241: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5242: if ($otherdom ne '') {
5243: if (ref($request_domains->{$type}) eq 'ARRAY') {
5244: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5245: push(@{$request_domains->{$type}},$otherdom);
5246: }
5247: } else {
5248: push(@{$request_domains->{$type}},$otherdom);
5249: }
5250: }
5251: }
5252: }
5253: unless($dom eq $env{'user.domain'}) {
5254: $canreq ++;
5255: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5256: $can_request->{$type} = 1;
5257: }
5258: }
5259: }
5260: }
5261: }
5262: }
5263: return $canreq;
5264: }
5265:
5266: # ---------------------------------------------- Custom access rule evaluation
5267:
5268: sub customaccess {
5269: my ($priv,$uri)=@_;
5270: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5271: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5272: $udom = &LONCAPA::clean_domain($udom);
5273: $ucrs = &LONCAPA::clean_username($ucrs);
5274: my $access=0;
5275: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5276: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5277: if ($type eq 'user') {
5278: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5279: my ($tdom,$tuname)=split(m{/},$scope);
5280: if ($tdom) {
5281: if ($tdom ne $env{'user.domain'}) { next; }
5282: }
5283: if ($tuname) {
5284: if ($tuname ne $env{'user.name'}) { next; }
5285: }
5286: $access=($effect eq 'allow');
5287: last;
5288: }
5289: } else {
5290: if ($role) {
5291: if ($role ne $urole) { next; }
5292: }
5293: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5294: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5295: if ($tdom) {
5296: if ($tdom ne $udom) { next; }
5297: }
5298: if ($tcrs) {
5299: if ($tcrs ne $ucrs) { next; }
5300: }
5301: if ($tsec) {
5302: if ($tsec ne $usec) { next; }
5303: }
5304: $access=($effect eq 'allow');
5305: last;
5306: }
5307: if ($realm eq '' && $role eq '') {
5308: $access=($effect eq 'allow');
5309: }
5310: }
5311: }
5312: return $access;
5313: }
5314:
5315: # ------------------------------------------------- Check for a user privilege
5316:
5317: sub allowed {
5318: my ($priv,$uri,$symb,$role)=@_;
5319: my $ver_orguri=$uri;
5320: $uri=&deversion($uri);
5321: my $orguri=$uri;
5322: $uri=&declutter($uri);
5323:
5324: if ($priv eq 'evb') {
5325: # Evade communication block restrictions for specified role in a course
5326: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5327: return $1;
5328: } else {
5329: return;
5330: }
5331: }
5332:
5333: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5334: # Free bre access to adm and meta resources
5335: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5336: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5337: && ($priv eq 'bre')) {
5338: return 'F';
5339: }
5340:
5341: # Free bre access to user's own portfolio contents
5342: my ($space,$domain,$name,@dir)=split('/',$uri);
5343: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5344: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5345: my %setters;
5346: my ($startblock,$endblock) =
5347: &Apache::loncommon::blockcheck(\%setters,'port');
5348: if ($startblock && $endblock) {
5349: return 'B';
5350: } else {
5351: return 'F';
5352: }
5353: }
5354:
5355: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5356: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5357: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5358: if (exists($env{'request.course.id'})) {
5359: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5360: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5361: if (($domain eq $cdom) && ($name eq $cnum)) {
5362: my $courseprivid=$env{'request.course.id'};
5363: $courseprivid=~s/\_/\//;
5364: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5365: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5366: return $1;
5367: } else {
5368: if ($env{'request.course.sec'}) {
5369: $courseprivid.='/'.$env{'request.course.sec'};
5370: }
5371: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5372: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5373: return $2;
5374: }
5375: }
5376: }
5377: }
5378: }
5379:
5380: # Free bre to public access
5381:
5382: if ($priv eq 'bre') {
5383: my $copyright=&metadata($uri,'copyright');
5384: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5385: return 'F';
5386: }
5387: if ($copyright eq 'priv') {
5388: $uri=~/([^\/]+)\/([^\/]+)\//;
5389: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5390: return '';
5391: }
5392: }
5393: if ($copyright eq 'domain') {
5394: $uri=~/([^\/]+)\/([^\/]+)\//;
5395: unless (($env{'user.domain'} eq $1) ||
5396: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5397: return '';
5398: }
5399: }
5400: if ($env{'request.role'}=~ /li\.\//) {
5401: # Library role, so allow browsing of resources in this domain.
5402: return 'F';
5403: }
5404: if ($copyright eq 'custom') {
5405: unless (&customaccess($priv,$uri)) { return ''; }
5406: }
5407: }
5408: # Domain coordinator is trying to create a course
5409: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5410: # uri is the requested domain in this case.
5411: # comparison to 'request.role.domain' shows if the user has selected
5412: # a role of dc for the domain in question.
5413: return 'F' if ($uri eq $env{'request.role.domain'});
5414: }
5415:
5416: my $thisallowed='';
5417: my $statecond=0;
5418: my $courseprivid='';
5419:
5420: my $ownaccess;
5421: # Community Coordinator or Assistant Co-author browsing resource space.
5422: if (($priv eq 'bro') && ($env{'user.author'})) {
5423: if ($uri eq '') {
5424: $ownaccess = 1;
5425: } else {
5426: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5427: my $udom = $env{'user.domain'};
5428: my $uname = $env{'user.name'};
5429: if ($uri =~ m{^\Q$udom\E/?$}) {
5430: $ownaccess = 1;
5431: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5432: unless ($uri =~ m{\.\./}) {
5433: $ownaccess = 1;
5434: }
5435: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5436: my $now = time;
5437: if ($uri =~ m{^([^/]+)/?$}) {
5438: my $adom = $1;
5439: foreach my $key (keys(%env)) {
5440: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5441: my ($start,$end) = split('.',$env{$key});
5442: if (($now >= $start) && (!$end || $end < $now)) {
5443: $ownaccess = 1;
5444: last;
5445: }
5446: }
5447: }
5448: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5449: my $adom = $1;
5450: my $aname = $2;
5451: foreach my $role ('ca','aa') {
5452: if ($env{"user.role.$role./$adom/$aname"}) {
5453: my ($start,$end) =
5454: split('.',$env{"user.role.$role./$adom/$aname"});
5455: if (($now >= $start) && (!$end || $end < $now)) {
5456: $ownaccess = 1;
5457: last;
5458: }
5459: }
5460: }
5461: }
5462: }
5463: }
5464: }
5465: }
5466:
5467: # Course
5468:
5469: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5470: unless (($priv eq 'bro') && (!$ownaccess)) {
5471: $thisallowed.=$1;
5472: }
5473: }
5474:
5475: # Domain
5476:
5477: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5478: =~/\Q$priv\E\&([^\:]*)/) {
5479: unless (($priv eq 'bro') && (!$ownaccess)) {
5480: $thisallowed.=$1;
5481: }
5482: }
5483:
5484: # Course: uri itself is a course
5485: my $courseuri=$uri;
5486: $courseuri=~s/\_(\d)/\/$1/;
5487: $courseuri=~s/^([^\/])/\/$1/;
5488:
5489: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5490: =~/\Q$priv\E\&([^\:]*)/) {
5491: unless (($priv eq 'bro') && (!$ownaccess)) {
5492: $thisallowed.=$1;
5493: }
5494: }
5495:
5496: # URI is an uploaded document for this course, default permissions don't matter
5497: # not allowing 'edit' access (editupload) to uploaded course docs
5498: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5499: $thisallowed='';
5500: my ($match)=&is_on_map($uri);
5501: if ($match) {
5502: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5503: =~/\Q$priv\E\&([^\:]*)/) {
5504: $thisallowed.=$1;
5505: }
5506: } else {
5507: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5508: if ($refuri) {
5509: if ($refuri =~ m|^/adm/|) {
5510: $thisallowed='F';
5511: } else {
5512: $refuri=&declutter($refuri);
5513: my ($match) = &is_on_map($refuri);
5514: if ($match) {
5515: $thisallowed='F';
5516: }
5517: }
5518: }
5519: }
5520: }
5521:
5522: if ($priv eq 'bre'
5523: && $thisallowed ne 'F'
5524: && $thisallowed ne '2'
5525: && &is_portfolio_url($uri)) {
5526: $thisallowed = &portfolio_access($uri);
5527: }
5528:
5529: # Full access at system, domain or course-wide level? Exit.
5530: if ($thisallowed=~/F/) {
5531: return 'F';
5532: }
5533:
5534: # If this is generating or modifying users, exit with special codes
5535:
5536: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5537: if (($priv eq 'cca') || ($priv eq 'caa')) {
5538: my ($audom,$auname)=split('/',$uri);
5539: # no author name given, so this just checks on the general right to make a co-author in this domain
5540: unless ($auname) { return $thisallowed; }
5541: # an author name is given, so we are about to actually make a co-author for a certain account
5542: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5543: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5544: ($audom ne $env{'request.role.domain'}))) { return ''; }
5545: }
5546: return $thisallowed;
5547: }
5548: #
5549: # Gathered so far: system, domain and course wide privileges
5550: #
5551: # Course: See if uri or referer is an individual resource that is part of
5552: # the course
5553:
5554: if ($env{'request.course.id'}) {
5555:
5556: $courseprivid=$env{'request.course.id'};
5557: if ($env{'request.course.sec'}) {
5558: $courseprivid.='/'.$env{'request.course.sec'};
5559: }
5560: $courseprivid=~s/\_/\//;
5561: my $checkreferer=1;
5562: my ($match,$cond)=&is_on_map($uri);
5563: if ($match) {
5564: $statecond=$cond;
5565: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5566: =~/\Q$priv\E\&([^\:]*)/) {
5567: $thisallowed.=$1;
5568: $checkreferer=0;
5569: }
5570: }
5571:
5572: if ($checkreferer) {
5573: my $refuri=$env{'httpref.'.$orguri};
5574: unless ($refuri) {
5575: foreach my $key (keys(%env)) {
5576: if ($key=~/^httpref\..*\*/) {
5577: my $pattern=$key;
5578: $pattern=~s/^httpref\.\/res\///;
5579: $pattern=~s/\*/\[\^\/\]\+/g;
5580: $pattern=~s/\//\\\//g;
5581: if ($orguri=~/$pattern/) {
5582: $refuri=$env{$key};
5583: }
5584: }
5585: }
5586: }
5587:
5588: if ($refuri) {
5589: $refuri=&declutter($refuri);
5590: my ($match,$cond)=&is_on_map($refuri);
5591: if ($match) {
5592: my $refstatecond=$cond;
5593: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5594: =~/\Q$priv\E\&([^\:]*)/) {
5595: $thisallowed.=$1;
5596: $uri=$refuri;
5597: $statecond=$refstatecond;
5598: }
5599: }
5600: }
5601: }
5602: }
5603:
5604: #
5605: # Gathered now: all privileges that could apply, and condition number
5606: #
5607: #
5608: # Full or no access?
5609: #
5610:
5611: if ($thisallowed=~/F/) {
5612: return 'F';
5613: }
5614:
5615: unless ($thisallowed) {
5616: return '';
5617: }
5618:
5619: # Restrictions exist, deal with them
5620: #
5621: # C:according to course preferences
5622: # R:according to resource settings
5623: # L:unless locked
5624: # X:according to user session state
5625: #
5626:
5627: # Possibly locked functionality, check all courses
5628: # Locks might take effect only after 10 minutes cache expiration for other
5629: # courses, and 2 minutes for current course
5630:
5631: my $envkey;
5632: if ($thisallowed=~/L/) {
5633: foreach $envkey (keys(%env)) {
5634: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5635: my $courseid=$2;
5636: my $roleid=$1.'.'.$2;
5637: $courseid=~s/^\///;
5638: my $expiretime=600;
5639: if ($env{'request.role'} eq $roleid) {
5640: $expiretime=120;
5641: }
5642: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5643: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5644: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5645: &coursedescription($courseid,{'freshen_cache' => 1});
5646: }
5647: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5648: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5649: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5650: &log($env{'user.domain'},$env{'user.name'},
5651: $env{'user.home'},
5652: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5653: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5654: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5655: return '';
5656: }
5657: }
5658: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5659: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5660: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5661: &log($env{'user.domain'},$env{'user.name'},
5662: $env{'user.home'},
5663: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5664: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5665: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5666: return '';
5667: }
5668: }
5669: }
5670: }
5671: }
5672:
5673: #
5674: # Rest of the restrictions depend on selected course
5675: #
5676:
5677: unless ($env{'request.course.id'}) {
5678: if ($thisallowed eq 'A') {
5679: return 'A';
5680: } elsif ($thisallowed eq 'B') {
5681: return 'B';
5682: } else {
5683: return '1';
5684: }
5685: }
5686:
5687: #
5688: # Now user is definitely in a course
5689: #
5690:
5691:
5692: # Course preferences
5693:
5694: if ($thisallowed=~/C/) {
5695: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5696: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5697: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5698: =~/\Q$rolecode\E/) {
5699: if (($priv ne 'pch') && ($priv ne 'plc')) {
5700: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5701: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5702: $env{'request.course.id'});
5703: }
5704: return '';
5705: }
5706:
5707: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5708: =~/\Q$unamedom\E/) {
5709: if (($priv ne 'pch') && ($priv ne 'plc')) {
5710: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5711: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5712: $env{'request.course.id'});
5713: }
5714: return '';
5715: }
5716: }
5717:
5718: # Resource preferences
5719:
5720: if ($thisallowed=~/R/) {
5721: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5722: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5723: if (($priv ne 'pch') && ($priv ne 'plc')) {
5724: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5725: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5726: }
5727: return '';
5728: }
5729: }
5730:
5731: # Restricted by state or randomout?
5732:
5733: if ($thisallowed=~/X/) {
5734: if ($env{'acc.randomout'}) {
5735: if (!$symb) { $symb=&symbread($uri,1); }
5736: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5737: return '';
5738: }
5739: }
5740: if (&condval($statecond)) {
5741: return '2';
5742: } else {
5743: return '';
5744: }
5745: }
5746:
5747: if ($thisallowed eq 'A') {
5748: return 'A';
5749: } elsif ($thisallowed eq 'B') {
5750: return 'B';
5751: }
5752: return 'F';
5753: }
5754:
5755: sub split_uri_for_cond {
5756: my $uri=&deversion(&declutter(shift));
5757: my @uriparts=split(/\//,$uri);
5758: my $filename=pop(@uriparts);
5759: my $pathname=join('/',@uriparts);
5760: return ($pathname,$filename);
5761: }
5762: # --------------------------------------------------- Is a resource on the map?
5763:
5764: sub is_on_map {
5765: my ($pathname,$filename) = &split_uri_for_cond(shift);
5766: #Trying to find the conditional for the file
5767: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5768: /\&\Q$filename\E\:([\d\|]+)\&/);
5769: if ($match) {
5770: return (1,$1);
5771: } else {
5772: return (0,0);
5773: }
5774: }
5775:
5776: # --------------------------------------------------------- Get symb from alias
5777:
5778: sub get_symb_from_alias {
5779: my $symb=shift;
5780: my ($map,$resid,$url)=&decode_symb($symb);
5781: # Already is a symb
5782: if ($url) { return $symb; }
5783: # Must be an alias
5784: my $aliassymb='';
5785: my %bighash;
5786: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5787: &GDBM_READER(),0640)) {
5788: my $rid=$bighash{'mapalias_'.$symb};
5789: if ($rid) {
5790: my ($mapid,$resid)=split(/\./,$rid);
5791: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5792: $resid,$bighash{'src_'.$rid});
5793: }
5794: untie %bighash;
5795: }
5796: return $aliassymb;
5797: }
5798:
5799: # ----------------------------------------------------------------- Define Role
5800:
5801: sub definerole {
5802: if (allowed('mcr','/')) {
5803: my ($rolename,$sysrole,$domrole,$courole)=@_;
5804: foreach my $role (split(':',$sysrole)) {
5805: my ($crole,$cqual)=split(/\&/,$role);
5806: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5807: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5808: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5809: return "refused:s:$crole&$cqual";
5810: }
5811: }
5812: }
5813: foreach my $role (split(':',$domrole)) {
5814: my ($crole,$cqual)=split(/\&/,$role);
5815: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5816: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5817: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5818: return "refused:d:$crole&$cqual";
5819: }
5820: }
5821: }
5822: foreach my $role (split(':',$courole)) {
5823: my ($crole,$cqual)=split(/\&/,$role);
5824: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5825: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5826: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5827: return "refused:c:$crole&$cqual";
5828: }
5829: }
5830: }
5831: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5832: "$env{'user.domain'}:$env{'user.name'}:".
5833: "rolesdef_$rolename=".
5834: escape($sysrole.'_'.$domrole.'_'.$courole);
5835: return reply($command,$env{'user.home'});
5836: } else {
5837: return 'refused';
5838: }
5839: }
5840:
5841: # ---------------- Make a metadata query against the network of library servers
5842:
5843: sub metadata_query {
5844: my ($query,$custom,$customshow,$server_array)=@_;
5845: my %rhash;
5846: my %libserv = &all_library();
5847: my @server_list = (defined($server_array) ? @$server_array
5848: : keys(%libserv) );
5849: for my $server (@server_list) {
5850: unless ($custom or $customshow) {
5851: my $reply=&reply("querysend:".&escape($query),$server);
5852: $rhash{$server}=$reply;
5853: }
5854: else {
5855: my $reply=&reply("querysend:".&escape($query).':'.
5856: &escape($custom).':'.&escape($customshow),
5857: $server);
5858: $rhash{$server}=$reply;
5859: }
5860: }
5861: return \%rhash;
5862: }
5863:
5864: # ----------------------------------------- Send log queries and wait for reply
5865:
5866: sub log_query {
5867: my ($uname,$udom,$query,%filters)=@_;
5868: my $uhome=&homeserver($uname,$udom);
5869: if ($uhome eq 'no_host') { return 'error: no_host'; }
5870: my $uhost=&hostname($uhome);
5871: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5872: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5873: $uhome);
5874: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5875: return get_query_reply($queryid);
5876: }
5877:
5878: # -------------------------- Update MySQL table for portfolio file
5879:
5880: sub update_portfolio_table {
5881: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5882: if ($group ne '') {
5883: $file_name =~s /^\Q$group\E//;
5884: }
5885: my $homeserver = &homeserver($uname,$udom);
5886: my $queryid=
5887: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5888: ':'.&escape($file_name).':'.$action,$homeserver);
5889: my $reply = &get_query_reply($queryid);
5890: return $reply;
5891: }
5892:
5893: # -------------------------- Update MySQL allusers table
5894:
5895: sub update_allusers_table {
5896: my ($uname,$udom,$names) = @_;
5897: my $homeserver = &homeserver($uname,$udom);
5898: my $queryid=
5899: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5900: 'lastname='.&escape($names->{'lastname'}).'%%'.
5901: 'firstname='.&escape($names->{'firstname'}).'%%'.
5902: 'middlename='.&escape($names->{'middlename'}).'%%'.
5903: 'generation='.&escape($names->{'generation'}).'%%'.
5904: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5905: 'id='.&escape($names->{'id'}),$homeserver);
5906: return;
5907: }
5908:
5909: # ------- Request retrieval of institutional classlists for course(s)
5910:
5911: sub fetch_enrollment_query {
5912: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5913: my $homeserver;
5914: my $maxtries = 1;
5915: if ($context eq 'automated') {
5916: $homeserver = $perlvar{'lonHostID'};
5917: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5918: } else {
5919: $homeserver = &homeserver($cnum,$dom);
5920: }
5921: my $host=&hostname($homeserver);
5922: my $cmd = '';
5923: foreach my $affiliate (keys(%{$affiliatesref})) {
5924: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5925: }
5926: $cmd =~ s/%%$//;
5927: $cmd = &escape($cmd);
5928: my $query = 'fetchenrollment';
5929: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5930: unless ($queryid=~/^\Q$host\E\_/) {
5931: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5932: return 'error: '.$queryid;
5933: }
5934: my $reply = &get_query_reply($queryid);
5935: my $tries = 1;
5936: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5937: $reply = &get_query_reply($queryid);
5938: $tries ++;
5939: }
5940: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5941: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5942: } else {
5943: my @responses = split(/:/,$reply);
5944: if ($homeserver eq $perlvar{'lonHostID'}) {
5945: foreach my $line (@responses) {
5946: my ($key,$value) = split(/=/,$line,2);
5947: $$replyref{$key} = $value;
5948: }
5949: } else {
5950: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5951: foreach my $line (@responses) {
5952: my ($key,$value) = split(/=/,$line);
5953: $$replyref{$key} = $value;
5954: if ($value > 0) {
5955: foreach my $item (@{$$affiliatesref{$key}}) {
5956: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5957: my $destname = $pathname.'/'.$filename;
5958: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5959: if ($xml_classlist =~ /^error/) {
5960: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5961: } else {
5962: if ( open(FILE,">$destname") ) {
5963: print FILE &unescape($xml_classlist);
5964: close(FILE);
5965: } else {
5966: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5967: }
5968: }
5969: }
5970: }
5971: }
5972: }
5973: return 'ok';
5974: }
5975: return 'error';
5976: }
5977:
5978: sub get_query_reply {
5979: my $queryid=shift;
5980: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5981: my $reply='';
5982: for (1..100) {
5983: sleep 2;
5984: if (-e $replyfile.'.end') {
5985: if (open(my $fh,$replyfile)) {
5986: $reply = join('',<$fh>);
5987: close($fh);
5988: } else { return 'error: reply_file_error'; }
5989: return &unescape($reply);
5990: }
5991: }
5992: return 'timeout:'.$queryid;
5993: }
5994:
5995: sub courselog_query {
5996: #
5997: # possible filters:
5998: # url: url or symb
5999: # username
6000: # domain
6001: # action: view, submit, grade
6002: # start: timestamp
6003: # end: timestamp
6004: #
6005: my (%filters)=@_;
6006: unless ($env{'request.course.id'}) { return 'no_course'; }
6007: if ($filters{'url'}) {
6008: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6009: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6010: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6011: }
6012: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6013: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6014: return &log_query($cname,$cdom,'courselog',%filters);
6015: }
6016:
6017: sub userlog_query {
6018: #
6019: # possible filters:
6020: # action: log check role
6021: # start: timestamp
6022: # end: timestamp
6023: #
6024: my ($uname,$udom,%filters)=@_;
6025: return &log_query($uname,$udom,'userlog',%filters);
6026: }
6027:
6028: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6029:
6030: sub auto_run {
6031: my ($cnum,$cdom) = @_;
6032: my $response = 0;
6033: my $settings;
6034: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6035: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6036: $settings = $domconfig{'autoenroll'};
6037: if ($settings->{'run'} eq '1') {
6038: $response = 1;
6039: }
6040: } else {
6041: my $homeserver;
6042: if (&is_course($cdom,$cnum)) {
6043: $homeserver = &homeserver($cnum,$cdom);
6044: } else {
6045: $homeserver = &domain($cdom,'primary');
6046: }
6047: if ($homeserver ne 'no_host') {
6048: $response = &reply('autorun:'.$cdom,$homeserver);
6049: }
6050: }
6051: return $response;
6052: }
6053:
6054: sub auto_get_sections {
6055: my ($cnum,$cdom,$inst_coursecode) = @_;
6056: my $homeserver;
6057: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6058: $homeserver = &homeserver($cnum,$cdom);
6059: }
6060: if (!defined($homeserver)) {
6061: if ($cdom =~ /^$match_domain$/) {
6062: $homeserver = &domain($cdom,'primary');
6063: }
6064: }
6065: my @secs;
6066: if (defined($homeserver)) {
6067: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6068: unless ($response eq 'refused') {
6069: @secs = split(/:/,$response);
6070: }
6071: }
6072: return @secs;
6073: }
6074:
6075: sub auto_new_course {
6076: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6077: my $homeserver = &homeserver($cnum,$cdom);
6078: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6079: return $response;
6080: }
6081:
6082: sub auto_validate_courseID {
6083: my ($cnum,$cdom,$inst_course_id) = @_;
6084: my $homeserver = &homeserver($cnum,$cdom);
6085: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6086: return $response;
6087: }
6088:
6089: sub auto_validate_instcode {
6090: my ($cnum,$cdom,$instcode,$owner) = @_;
6091: my ($homeserver,$response);
6092: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6093: $homeserver = &homeserver($cnum,$cdom);
6094: }
6095: if (!defined($homeserver)) {
6096: if ($cdom =~ /^$match_domain$/) {
6097: $homeserver = &domain($cdom,'primary');
6098: }
6099: }
6100: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6101: &escape($instcode).':'.&escape($owner),$homeserver));
6102: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6103: return ($outcome,$description);
6104: }
6105:
6106: sub auto_create_password {
6107: my ($cnum,$cdom,$authparam,$udom) = @_;
6108: my ($homeserver,$response);
6109: my $create_passwd = 0;
6110: my $authchk = '';
6111: if ($udom =~ /^$match_domain$/) {
6112: $homeserver = &domain($udom,'primary');
6113: }
6114: if ($homeserver eq '') {
6115: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6116: $homeserver = &homeserver($cnum,$cdom);
6117: }
6118: }
6119: if ($homeserver eq '') {
6120: $authchk = 'nodomain';
6121: } else {
6122: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6123: if ($response eq 'refused') {
6124: $authchk = 'refused';
6125: } else {
6126: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6127: }
6128: }
6129: return ($authparam,$create_passwd,$authchk);
6130: }
6131:
6132: sub auto_photo_permission {
6133: my ($cnum,$cdom,$students) = @_;
6134: my $homeserver = &homeserver($cnum,$cdom);
6135: my ($outcome,$perm_reqd,$conditions) =
6136: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6137: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6138: return (undef,undef);
6139: }
6140: return ($outcome,$perm_reqd,$conditions);
6141: }
6142:
6143: sub auto_checkphotos {
6144: my ($uname,$udom,$pid) = @_;
6145: my $homeserver = &homeserver($uname,$udom);
6146: my ($result,$resulttype);
6147: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6148: &escape($uname).':'.&escape($pid),
6149: $homeserver));
6150: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6151: return (undef,undef);
6152: }
6153: if ($outcome) {
6154: ($result,$resulttype) = split(/:/,$outcome);
6155: }
6156: return ($result,$resulttype);
6157: }
6158:
6159: sub auto_photochoice {
6160: my ($cnum,$cdom) = @_;
6161: my $homeserver = &homeserver($cnum,$cdom);
6162: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6163: &escape($cdom),
6164: $homeserver)));
6165: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6166: return (undef,undef);
6167: }
6168: return ($update,$comment);
6169: }
6170:
6171: sub auto_photoupdate {
6172: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6173: my $homeserver = &homeserver($cnum,$dom);
6174: my $host=&hostname($homeserver);
6175: my $cmd = '';
6176: my $maxtries = 1;
6177: foreach my $affiliate (keys(%{$affiliatesref})) {
6178: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6179: }
6180: $cmd =~ s/%%$//;
6181: $cmd = &escape($cmd);
6182: my $query = 'institutionalphotos';
6183: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6184: unless ($queryid=~/^\Q$host\E\_/) {
6185: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6186: return 'error: '.$queryid;
6187: }
6188: my $reply = &get_query_reply($queryid);
6189: my $tries = 1;
6190: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6191: $reply = &get_query_reply($queryid);
6192: $tries ++;
6193: }
6194: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6195: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6196: } else {
6197: my @responses = split(/:/,$reply);
6198: my $outcome = shift(@responses);
6199: foreach my $item (@responses) {
6200: my ($key,$value) = split(/=/,$item);
6201: $$photo{$key} = $value;
6202: }
6203: return $outcome;
6204: }
6205: return 'error';
6206: }
6207:
6208: sub auto_instcode_format {
6209: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
6210: $cat_order) = @_;
6211: my $courses = '';
6212: my @homeservers;
6213: if ($caller eq 'global') {
6214: my %servers = &get_servers($codedom,'library');
6215: foreach my $tryserver (keys(%servers)) {
6216: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6217: push(@homeservers,$tryserver);
6218: }
6219: }
6220: } elsif ($caller eq 'requests') {
6221: if ($codedom =~ /^$match_domain$/) {
6222: my $chome = &domain($codedom,'primary');
6223: unless ($chome eq 'no_host') {
6224: push(@homeservers,$chome);
6225: }
6226: }
6227: } else {
6228: push(@homeservers,&homeserver($caller,$codedom));
6229: }
6230: foreach my $code (keys(%{$instcodes})) {
6231: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
6232: }
6233: chop($courses);
6234: my $ok_response = 0;
6235: my $response;
6236: while (@homeservers > 0 && $ok_response == 0) {
6237: my $server = shift(@homeservers);
6238: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
6239: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
6240: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
6241: split(/:/,$response);
6242: %{$codes} = (%{$codes},&str2hash($codes_str));
6243: push(@{$codetitles},&str2array($codetitles_str));
6244: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
6245: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
6246: $ok_response = 1;
6247: }
6248: }
6249: if ($ok_response) {
6250: return 'ok';
6251: } else {
6252: return $response;
6253: }
6254: }
6255:
6256: sub auto_instcode_defaults {
6257: my ($domain,$returnhash,$code_order) = @_;
6258: my @homeservers;
6259:
6260: my %servers = &get_servers($domain,'library');
6261: foreach my $tryserver (keys(%servers)) {
6262: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6263: push(@homeservers,$tryserver);
6264: }
6265: }
6266:
6267: my $response;
6268: foreach my $server (@homeservers) {
6269: $response=&reply('autoinstcodedefaults:'.$domain,$server);
6270: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6271:
6272: foreach my $pair (split(/\&/,$response)) {
6273: my ($name,$value)=split(/\=/,$pair);
6274: if ($name eq 'code_order') {
6275: @{$code_order} = split(/\&/,&unescape($value));
6276: } else {
6277: $returnhash->{&unescape($name)}=&unescape($value);
6278: }
6279: }
6280: return 'ok';
6281: }
6282:
6283: return $response;
6284: }
6285:
6286: sub auto_possible_instcodes {
6287: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
6288: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
6289: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
6290: return;
6291: }
6292: my (@homeservers,$uhome);
6293: if (defined(&domain($domain,'primary'))) {
6294: $uhome=&domain($domain,'primary');
6295: push(@homeservers,&domain($domain,'primary'));
6296: } else {
6297: my %servers = &get_servers($domain,'library');
6298: foreach my $tryserver (keys(%servers)) {
6299: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6300: push(@homeservers,$tryserver);
6301: }
6302: }
6303: }
6304: my $response;
6305: foreach my $server (@homeservers) {
6306: $response=&reply('autopossibleinstcodes:'.$domain,$server);
6307: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6308: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
6309: split(':',$response);
6310: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
6311: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
6312: foreach my $item (split('&',$cat_title)) {
6313: my ($name,$value)=split('=',$item);
6314: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
6315: }
6316: foreach my $item (split('&',$cat_order)) {
6317: my ($name,$value)=split('=',$item);
6318: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
6319: }
6320: return 'ok';
6321: }
6322: return $response;
6323: }
6324:
6325: sub auto_courserequest_checks {
6326: my ($dom) = @_;
6327: my ($homeserver,%validations);
6328: if ($dom =~ /^$match_domain$/) {
6329: $homeserver = &domain($dom,'primary');
6330: }
6331: unless ($homeserver eq 'no_host') {
6332: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
6333: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
6334: my @items = split(/&/,$response);
6335: foreach my $item (@items) {
6336: my ($key,$value) = split('=',$item);
6337: $validations{&unescape($key)} = &thaw_unescape($value);
6338: }
6339: }
6340: }
6341: return %validations;
6342: }
6343:
6344: sub auto_courserequest_validation {
6345: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
6346: my ($homeserver,$response);
6347: if ($dom =~ /^$match_domain$/) {
6348: $homeserver = &domain($dom,'primary');
6349: }
6350: unless ($homeserver eq 'no_host') {
6351:
6352: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
6353: ':'.&escape($crstype).':'.&escape($inststatuslist).
6354: ':'.&escape($instcode).':'.&escape($instseclist),
6355: $homeserver));
6356: }
6357: return $response;
6358: }
6359:
6360: sub auto_validate_class_sec {
6361: my ($cdom,$cnum,$owners,$inst_class) = @_;
6362: my $homeserver = &homeserver($cnum,$cdom);
6363: my $ownerlist;
6364: if (ref($owners) eq 'ARRAY') {
6365: $ownerlist = join(',',@{$owners});
6366: } else {
6367: $ownerlist = $owners;
6368: }
6369: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6370: &escape($ownerlist).':'.$cdom,$homeserver);
6371: return $response;
6372: }
6373:
6374: # ------------------------------------------------------- Course Group routines
6375:
6376: sub get_coursegroups {
6377: my ($cdom,$cnum,$group,$namespace) = @_;
6378: return(&dump($namespace,$cdom,$cnum,$group));
6379: }
6380:
6381: sub modify_coursegroup {
6382: my ($cdom,$cnum,$groupsettings) = @_;
6383: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6384: }
6385:
6386: sub toggle_coursegroup_status {
6387: my ($cdom,$cnum,$group,$action) = @_;
6388: my ($from_namespace,$to_namespace);
6389: if ($action eq 'delete') {
6390: $from_namespace = 'coursegroups';
6391: $to_namespace = 'deleted_groups';
6392: } else {
6393: $from_namespace = 'deleted_groups';
6394: $to_namespace = 'coursegroups';
6395: }
6396: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6397: if (my $tmp = &error(%curr_group)) {
6398: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6399: return ('read error',$tmp);
6400: } else {
6401: my %savedsettings = %curr_group;
6402: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6403: my $deloutcome;
6404: if ($result eq 'ok') {
6405: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6406: } else {
6407: return ('write error',$result);
6408: }
6409: if ($deloutcome eq 'ok') {
6410: return 'ok';
6411: } else {
6412: return ('delete error',$deloutcome);
6413: }
6414: }
6415: }
6416:
6417: sub modify_group_roles {
6418: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6419: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6420: my $role = 'gr/'.&escape($userprivs);
6421: my ($uname,$udom) = split(/:/,$user);
6422: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6423: if ($result eq 'ok') {
6424: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6425: }
6426: return $result;
6427: }
6428:
6429: sub modify_coursegroup_membership {
6430: my ($cdom,$cnum,$membership) = @_;
6431: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6432: return $result;
6433: }
6434:
6435: sub get_active_groups {
6436: my ($udom,$uname,$cdom,$cnum) = @_;
6437: my $now = time;
6438: my %groups = ();
6439: foreach my $key (keys(%env)) {
6440: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6441: my ($start,$end) = split(/\./,$env{$key});
6442: if (($end!=0) && ($end<$now)) { next; }
6443: if (($start!=0) && ($start>$now)) { next; }
6444: if ($1 eq $cdom && $2 eq $cnum) {
6445: $groups{$3} = $env{$key} ;
6446: }
6447: }
6448: }
6449: return %groups;
6450: }
6451:
6452: sub get_group_membership {
6453: my ($cdom,$cnum,$group) = @_;
6454: return(&dump('groupmembership',$cdom,$cnum,$group));
6455: }
6456:
6457: sub get_users_groups {
6458: my ($udom,$uname,$courseid) = @_;
6459: my @usersgroups;
6460: my $cachetime=1800;
6461:
6462: my $hashid="$udom:$uname:$courseid";
6463: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6464: if (defined($cached)) {
6465: @usersgroups = split(/:/,$grouplist);
6466: } else {
6467: $grouplist = '';
6468: my $courseurl = &courseid_to_courseurl($courseid);
6469: my $extra = &freeze_escape({'skipcheck' => 1});
6470: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
6471: my $access_end = $env{'course.'.$courseid.
6472: '.default_enrollment_end_date'};
6473: my $now = time;
6474: foreach my $key (keys(%roleshash)) {
6475: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6476: my $group = $1;
6477: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6478: my $start = $2;
6479: my $end = $1;
6480: if ($start == -1) { next; } # deleted from group
6481: if (($start!=0) && ($start>$now)) { next; }
6482: if (($end!=0) && ($end<$now)) {
6483: if ($access_end && $access_end < $now) {
6484: if ($access_end - $end < 86400) {
6485: push(@usersgroups,$group);
6486: }
6487: }
6488: next;
6489: }
6490: push(@usersgroups,$group);
6491: }
6492: }
6493: }
6494: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6495: $grouplist = join(':',@usersgroups);
6496: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6497: }
6498: return @usersgroups;
6499: }
6500:
6501: sub devalidate_getgroups_cache {
6502: my ($udom,$uname,$cdom,$cnum)=@_;
6503: my $courseid = $cdom.'_'.$cnum;
6504:
6505: my $hashid="$udom:$uname:$courseid";
6506: &devalidate_cache_new('getgroups',$hashid);
6507: }
6508:
6509: # ------------------------------------------------------------------ Plain Text
6510:
6511: sub plaintext {
6512: my ($short,$type,$cid,$forcedefault) = @_;
6513: if ($short =~ m{^cr/}) {
6514: return (split('/',$short))[-1];
6515: }
6516: if (!defined($cid)) {
6517: $cid = $env{'request.course.id'};
6518: }
6519: my %rolenames = (
6520: Course => 'std',
6521: Community => 'alt1',
6522: );
6523: if ($cid ne '') {
6524: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6525: unless ($forcedefault) {
6526: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6527: &Apache::lonlocal::mt_escape(\$roletext);
6528: return &Apache::lonlocal::mt($roletext);
6529: }
6530: }
6531: }
6532: if ((defined($type)) && (defined($rolenames{$type})) &&
6533: (defined($rolenames{$type})) &&
6534: (defined($prp{$short}{$rolenames{$type}}))) {
6535: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6536: } elsif ($cid ne '') {
6537: my $crstype = $env{'course.'.$cid.'.type'};
6538: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6539: (defined($prp{$short}{$rolenames{$crstype}}))) {
6540: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6541: }
6542: }
6543: return &Apache::lonlocal::mt($prp{$short}{'std'});
6544: }
6545:
6546: # ----------------------------------------------------------------- Assign Role
6547:
6548: sub assignrole {
6549: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6550: $context)=@_;
6551: my $mrole;
6552: if ($role =~ /^cr\//) {
6553: my $cwosec=$url;
6554: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6555: unless (&allowed('ccr',$cwosec)) {
6556: my $refused = 1;
6557: if ($context eq 'requestcourses') {
6558: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6559: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6560: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6561: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6562: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6563: if ($crsenv{'internal.courseowner'} eq
6564: $env{'user.name'}.':'.$env{'user.domain'}) {
6565: $refused = '';
6566: }
6567: }
6568: }
6569: }
6570: }
6571: if ($refused) {
6572: &logthis('Refused custom assignrole: '.
6573: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6574: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6575: return 'refused';
6576: }
6577: }
6578: $mrole='cr';
6579: } elsif ($role =~ /^gr\//) {
6580: my $cwogrp=$url;
6581: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6582: unless (&allowed('mdg',$cwogrp)) {
6583: &logthis('Refused group assignrole: '.
6584: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6585: $env{'user.name'}.' at '.$env{'user.domain'});
6586: return 'refused';
6587: }
6588: $mrole='gr';
6589: } else {
6590: my $cwosec=$url;
6591: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6592: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6593: my $refused;
6594: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6595: if (!(&allowed('c'.$role,$url))) {
6596: $refused = 1;
6597: }
6598: } else {
6599: $refused = 1;
6600: }
6601: if ($refused) {
6602: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6603: if (!$selfenroll && $context eq 'course') {
6604: my %crsenv;
6605: if ($role eq 'cc' || $role eq 'co') {
6606: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6607: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
6608: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
6609: if ($crsenv{'internal.courseowner'} eq
6610: $env{'user.name'}.':'.$env{'user.domain'}) {
6611: $refused = '';
6612: }
6613: }
6614: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
6615: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
6616: if ($crsenv{'internal.courseowner'} eq
6617: $env{'user.name'}.':'.$env{'user.domain'}) {
6618: $refused = '';
6619: }
6620: }
6621: }
6622: }
6623: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6624: $refused = '';
6625: } elsif ($context eq 'requestcourses') {
6626: my @possroles = ('st','ta','ep','in','cc','co');
6627: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6628: my $wrongcc;
6629: if ($cnum =~ /^$match_community$/) {
6630: $wrongcc = 1 if ($role eq 'cc');
6631: } else {
6632: $wrongcc = 1 if ($role eq 'co');
6633: }
6634: unless ($wrongcc) {
6635: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6636: if ($crsenv{'internal.courseowner'} eq
6637: $env{'user.name'}.':'.$env{'user.domain'}) {
6638: $refused = '';
6639: }
6640: }
6641: }
6642: }
6643: if ($refused) {
6644: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6645: ' '.$role.' '.$end.' '.$start.' by '.
6646: $env{'user.name'}.' at '.$env{'user.domain'});
6647: return 'refused';
6648: }
6649: }
6650: }
6651: $mrole=$role;
6652: }
6653: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6654: "$udom:$uname:$url".'_'."$mrole=$role";
6655: if ($end) { $command.='_'.$end; }
6656: if ($start) {
6657: if ($end) {
6658: $command.='_'.$start;
6659: } else {
6660: $command.='_0_'.$start;
6661: }
6662: }
6663: my $origstart = $start;
6664: my $origend = $end;
6665: my $delflag;
6666: # actually delete
6667: if ($deleteflag) {
6668: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6669: # modify command to delete the role
6670: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6671: "$udom:$uname:$url".'_'."$mrole";
6672: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6673: # set start and finish to negative values for userrolelog
6674: $start=-1;
6675: $end=-1;
6676: $delflag = 1;
6677: }
6678: }
6679: # send command
6680: my $answer=&reply($command,&homeserver($uname,$udom));
6681: # log new user role if status is ok
6682: if ($answer eq 'ok') {
6683: &userrolelog($role,$uname,$udom,$url,$start,$end);
6684: # for course roles, perform group memberships changes triggered by role change.
6685: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6686: unless ($role =~ /^gr/) {
6687: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6688: $origstart,$selfenroll,$context);
6689: }
6690: if ($role eq 'cc') {
6691: &autoupdate_coowners($url,$end,$start,$uname,$udom);
6692: }
6693: }
6694: return $answer;
6695: }
6696:
6697: sub autoupdate_coowners {
6698: my ($url,$end,$start,$uname,$udom) = @_;
6699: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
6700: if (($cdom ne '') && ($cnum ne '')) {
6701: my $now = time;
6702: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
6703: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
6704: my %coursehash = &coursedescription($cdom.'_'.$cnum);
6705: my $instcode = $coursehash{'internal.coursecode'};
6706: if ($instcode ne '') {
6707: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
6708: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
6709: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
6710: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
6711: if ($result eq 'valid') {
6712: if ($coursehash{'internal.co-owners'}) {
6713: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6714: push(@newcoowners,$coowner);
6715: }
6716: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
6717: push(@newcoowners,$uname.':'.$udom);
6718: }
6719: @newcoowners = sort(@newcoowners);
6720: } else {
6721: push(@newcoowners,$uname.':'.$udom);
6722: }
6723: } else {
6724: if ($coursehash{'internal.co-owners'}) {
6725: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6726: unless ($coowner eq $uname.':'.$udom) {
6727: push(@newcoowners,$coowner);
6728: }
6729: }
6730: unless (@newcoowners > 0) {
6731: $delcoowners = 1;
6732: $coowners = '';
6733: }
6734: }
6735: }
6736: if (@newcoowners || $delcoowners) {
6737: &store_coowners($cdom,$cnum,$coursehash{'home'},
6738: $delcoowners,@newcoowners);
6739: }
6740: }
6741: }
6742: }
6743: }
6744: }
6745: }
6746:
6747: sub store_coowners {
6748: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
6749: my $cid = $cdom.'_'.$cnum;
6750: my ($coowners,$delresult,$putresult);
6751: if (@newcoowners) {
6752: $coowners = join(',',@newcoowners);
6753: my %coownershash = (
6754: 'internal.co-owners' => $coowners,
6755: );
6756: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
6757: if ($putresult eq 'ok') {
6758: if ($env{'course.'.$cid.'.num'} eq $cnum) {
6759: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
6760: }
6761: }
6762: }
6763: if ($delcoowners) {
6764: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
6765: if ($delresult eq 'ok') {
6766: if ($env{'course.'.$cid.'.internal.co-owners'}) {
6767: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
6768: }
6769: }
6770: }
6771: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
6772: my %crsinfo =
6773: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6774: if (ref($crsinfo{$cid}) eq 'HASH') {
6775: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
6776: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
6777: }
6778: }
6779: }
6780:
6781: # -------------------------------------------------- Modify user authentication
6782: # Overrides without validation
6783:
6784: sub modifyuserauth {
6785: my ($udom,$uname,$umode,$upass)=@_;
6786: my $uhome=&homeserver($uname,$udom);
6787: unless (&allowed('mau',$udom)) { return 'refused'; }
6788: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6789: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6790: ' in domain '.$env{'request.role.domain'});
6791: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6792: &escape($upass),$uhome);
6793: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6794: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6795: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6796: &log($udom,,$uname,$uhome,
6797: 'Authentication changed by '.$env{'user.domain'}.', '.
6798: $env{'user.name'}.', '.$umode.
6799: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6800: unless ($reply eq 'ok') {
6801: &logthis('Authentication mode error: '.$reply);
6802: return 'error: '.$reply;
6803: }
6804: return 'ok';
6805: }
6806:
6807: # --------------------------------------------------------------- Modify a user
6808:
6809: sub modifyuser {
6810: my ($udom, $uname, $uid,
6811: $umode, $upass, $first,
6812: $middle, $last, $gene,
6813: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
6814: $udom= &LONCAPA::clean_domain($udom);
6815: $uname=&LONCAPA::clean_username($uname);
6816: my $showcandelete = 'none';
6817: if (ref($candelete) eq 'ARRAY') {
6818: if (@{$candelete} > 0) {
6819: $showcandelete = join(', ',@{$candelete});
6820: }
6821: }
6822: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6823: $umode.', '.$first.', '.$middle.', '.
6824: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
6825: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6826: ' desiredhome not specified').
6827: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6828: ' in domain '.$env{'request.role.domain'});
6829: my $uhome=&homeserver($uname,$udom,'true');
6830: my $newuser;
6831: if ($uhome eq 'no_host') {
6832: $newuser = 1;
6833: }
6834: # ----------------------------------------------------------------- Create User
6835: if (($uhome eq 'no_host') &&
6836: (($umode && $upass) || ($umode eq 'localauth'))) {
6837: my $unhome='';
6838: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6839: $unhome = $desiredhome;
6840: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6841: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6842: } else { # load balancing routine for determining $unhome
6843: my $loadm=10000000;
6844: my %servers = &get_servers($udom,'library');
6845: foreach my $tryserver (keys(%servers)) {
6846: my $answer=reply('load',$tryserver);
6847: if (($answer=~/\d+/) && ($answer<$loadm)) {
6848: $loadm=$answer;
6849: $unhome=$tryserver;
6850: }
6851: }
6852: }
6853: if (($unhome eq '') || ($unhome eq 'no_host')) {
6854: return 'error: unable to find a home server for '.$uname.
6855: ' in domain '.$udom;
6856: }
6857: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6858: &escape($upass),$unhome);
6859: unless ($reply eq 'ok') {
6860: return 'error: '.$reply;
6861: }
6862: $uhome=&homeserver($uname,$udom,'true');
6863: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6864: return 'error: unable verify users home machine.';
6865: }
6866: } # End of creation of new user
6867: # ---------------------------------------------------------------------- Add ID
6868: if ($uid) {
6869: $uid=~tr/A-Z/a-z/;
6870: my %uidhash=&idrget($udom,$uname);
6871: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6872: && (!$forceid)) {
6873: unless ($uid eq $uidhash{$uname}) {
6874: return 'error: user id "'.$uid.'" does not match '.
6875: 'current user id "'.$uidhash{$uname}.'".';
6876: }
6877: } else {
6878: &idput($udom,($uname => $uid));
6879: }
6880: }
6881: # -------------------------------------------------------------- Add names, etc
6882: my @tmp=&get('environment',
6883: ['firstname','middlename','lastname','generation','id',
6884: 'permanentemail','inststatus'],
6885: $udom,$uname);
6886: my (%names,%oldnames);
6887: if ($tmp[0] =~ m/^error:.*/) {
6888: %names=();
6889: } else {
6890: %names = @tmp;
6891: %oldnames = %names;
6892: }
6893: #
6894: # If name, email and/or uid are blank (e.g., because an uploaded file
6895: # of users did not contain them), do not overwrite existing values
6896: # unless field is in $candelete array ref.
6897: #
6898:
6899: my @fields = ('firstname','middlename','lastname','generation',
6900: 'permanentemail','id');
6901: my %newvalues;
6902: if (ref($candelete) eq 'ARRAY') {
6903: foreach my $field (@fields) {
6904: if (grep(/^\Q$field\E$/,@{$candelete})) {
6905: if ($field eq 'firstname') {
6906: $names{$field} = $first;
6907: } elsif ($field eq 'middlename') {
6908: $names{$field} = $middle;
6909: } elsif ($field eq 'lastname') {
6910: $names{$field} = $last;
6911: } elsif ($field eq 'generation') {
6912: $names{$field} = $gene;
6913: } elsif ($field eq 'permanentemail') {
6914: $names{$field} = $email;
6915: } elsif ($field eq 'id') {
6916: $names{$field} = $uid;
6917: }
6918: }
6919: }
6920: }
6921: if ($first) { $names{'firstname'} = $first; }
6922: if (defined($middle)) { $names{'middlename'} = $middle; }
6923: if ($last) { $names{'lastname'} = $last; }
6924: if (defined($gene)) { $names{'generation'} = $gene; }
6925: if ($email) {
6926: $email=~s/[^\w\@\.\-\,]//gs;
6927: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6928: }
6929: if ($uid) { $names{'id'} = $uid; }
6930: if (defined($inststatus)) {
6931: $names{'inststatus'} = '';
6932: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6933: if (ref($usertypes) eq 'HASH') {
6934: my @okstatuses;
6935: foreach my $item (split(/:/,$inststatus)) {
6936: if (defined($usertypes->{$item})) {
6937: push(@okstatuses,$item);
6938: }
6939: }
6940: if (@okstatuses) {
6941: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6942: }
6943: }
6944: }
6945: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
6946: $umode.', '.$first.', '.$middle.', '.
6947: $last.', '.$gene.', '.$email.', '.$inststatus;
6948: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6949: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6950: } else {
6951: $logmsg .= ' during self creation';
6952: }
6953: my $changed;
6954: if ($newuser) {
6955: $changed = 1;
6956: } else {
6957: foreach my $field (@fields) {
6958: if ($names{$field} ne $oldnames{$field}) {
6959: $changed = 1;
6960: last;
6961: }
6962: }
6963: }
6964: unless ($changed) {
6965: $logmsg = 'No changes in user information needed for: '.$logmsg;
6966: &logthis($logmsg);
6967: return 'ok';
6968: }
6969: my $reply = &put('environment', \%names, $udom,$uname);
6970: if ($reply ne 'ok') {
6971: return 'error: '.$reply;
6972: }
6973: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
6974: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
6975: }
6976: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
6977: &devalidate_cache_new('namescache',$uname.':'.$udom);
6978: $logmsg = 'Success modifying user '.$logmsg;
6979: &logthis($logmsg);
6980: return 'ok';
6981: }
6982:
6983: # -------------------------------------------------------------- Modify student
6984:
6985: sub modifystudent {
6986: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
6987: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
6988: $selfenroll,$context,$inststatus)=@_;
6989: if (!$cid) {
6990: unless ($cid=$env{'request.course.id'}) {
6991: return 'not_in_class';
6992: }
6993: }
6994: # --------------------------------------------------------------- Make the user
6995: my $reply=&modifyuser
6996: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
6997: $desiredhome,$email,$inststatus);
6998: unless ($reply eq 'ok') { return $reply; }
6999: # This will cause &modify_student_enrollment to get the uid from the
7000: # students environment
7001: $uid = undef if (!$forceid);
7002: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7003: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7004: return $reply;
7005: }
7006:
7007: sub modify_student_enrollment {
7008: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7009: my ($cdom,$cnum,$chome);
7010: if (!$cid) {
7011: unless ($cid=$env{'request.course.id'}) {
7012: return 'not_in_class';
7013: }
7014: $cdom=$env{'course.'.$cid.'.domain'};
7015: $cnum=$env{'course.'.$cid.'.num'};
7016: } else {
7017: ($cdom,$cnum)=split(/_/,$cid);
7018: }
7019: $chome=$env{'course.'.$cid.'.home'};
7020: if (!$chome) {
7021: $chome=&homeserver($cnum,$cdom);
7022: }
7023: if (!$chome) { return 'unknown_course'; }
7024: # Make sure the user exists
7025: my $uhome=&homeserver($uname,$udom);
7026: if (($uhome eq '') || ($uhome eq 'no_host')) {
7027: return 'error: no such user';
7028: }
7029: # Get student data if we were not given enough information
7030: if (!defined($first) || $first eq '' ||
7031: !defined($last) || $last eq '' ||
7032: !defined($uid) || $uid eq '' ||
7033: !defined($middle) || $middle eq '' ||
7034: !defined($gene) || $gene eq '') {
7035: # They did not supply us with enough data to enroll the student, so
7036: # we need to pick up more information.
7037: my %tmp = &get('environment',
7038: ['firstname','middlename','lastname', 'generation','id']
7039: ,$udom,$uname);
7040:
7041: #foreach my $key (keys(%tmp)) {
7042: # &logthis("key $key = ".$tmp{$key});
7043: #}
7044: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7045: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7046: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7047: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7048: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7049: }
7050: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7051: my $reply=cput('classlist',
7052: {"$uname:$udom" =>
7053: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7054: $cdom,$cnum);
7055: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
7056: return 'error: '.$reply;
7057: } else {
7058: &devalidate_getsection_cache($udom,$uname,$cid);
7059: }
7060: # Add student role to user
7061: my $uurl='/'.$cid;
7062: $uurl=~s/\_/\//g;
7063: if ($usec) {
7064: $uurl.='/'.$usec;
7065: }
7066: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
7067: }
7068:
7069: sub format_name {
7070: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7071: my $name;
7072: if ($first ne 'lastname') {
7073: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7074: } else {
7075: if ($lastname=~/\S/) {
7076: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7077: $name=~s/\s+,/,/;
7078: } else {
7079: $name.= $firstname.' '.$middlename.' '.$generation;
7080: }
7081: }
7082: $name=~s/^\s+//;
7083: $name=~s/\s+$//;
7084: $name=~s/\s+/ /g;
7085: return $name;
7086: }
7087:
7088: # ------------------------------------------------- Write to course preferences
7089:
7090: sub writecoursepref {
7091: my ($courseid,%prefs)=@_;
7092: $courseid=~s/^\///;
7093: $courseid=~s/\_/\//g;
7094: my ($cdomain,$cnum)=split(/\//,$courseid);
7095: my $chome=homeserver($cnum,$cdomain);
7096: if (($chome eq '') || ($chome eq 'no_host')) {
7097: return 'error: no such course';
7098: }
7099: my $cstring='';
7100: foreach my $pref (keys(%prefs)) {
7101: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7102: }
7103: $cstring=~s/\&$//;
7104: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7105: }
7106:
7107: # ---------------------------------------------------------- Make/modify course
7108:
7109: sub createcourse {
7110: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7111: $course_owner,$crstype,$cnum,$context,$category)=@_;
7112: $url=&declutter($url);
7113: my $cid='';
7114: if ($context eq 'requestcourses') {
7115: my $can_create = 0;
7116: my ($ownername,$ownerdom) = split(':',$course_owner);
7117: if ($udom eq $ownerdom) {
7118: if (&usertools_access($ownername,$ownerdom,$category,undef,
7119: $context)) {
7120: $can_create = 1;
7121: }
7122: } else {
7123: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7124: $category);
7125: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7126: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7127: if (@curr > 0) {
7128: my @options = qw(approval validate autolimit);
7129: my $optregex = join('|',@options);
7130: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7131: $can_create = 1;
7132: }
7133: }
7134: }
7135: }
7136: if ($can_create) {
7137: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7138: unless (&allowed('ccc',$udom)) {
7139: return 'refused';
7140: }
7141: }
7142: } else {
7143: return 'refused';
7144: }
7145: } elsif (!&allowed('ccc',$udom)) {
7146: return 'refused';
7147: }
7148: # --------------------------------------------------------------- Get Unique ID
7149: my $uname;
7150: if ($cnum =~ /^$match_courseid$/) {
7151: my $chome=&homeserver($cnum,$udom,'true');
7152: if (($chome eq '') || ($chome eq 'no_host')) {
7153: $uname = $cnum;
7154: } else {
7155: $uname = &generate_coursenum($udom,$crstype);
7156: }
7157: } else {
7158: $uname = &generate_coursenum($udom,$crstype);
7159: }
7160: return $uname if ($uname =~ /^error/);
7161: # -------------------------------------------------- Check supplied server name
7162: if (!defined($course_server)) {
7163: if (defined(&domain($udom,'primary'))) {
7164: $course_server = &domain($udom,'primary');
7165: } else {
7166: $course_server = $env{'user.home'};
7167: }
7168: }
7169: my %host_servers =
7170: &Apache::lonnet::get_servers($udom,'library');
7171: unless ($host_servers{$course_server}) {
7172: return 'error: invalid home server for course: '.$course_server;
7173: }
7174: # ------------------------------------------------------------- Make the course
7175: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
7176: $course_server);
7177: unless ($reply eq 'ok') { return 'error: '.$reply; }
7178: my $uhome=&homeserver($uname,$udom,'true');
7179: if (($uhome eq '') || ($uhome eq 'no_host')) {
7180: return 'error: no such course';
7181: }
7182: # ----------------------------------------------------------------- Course made
7183: # log existence
7184: my $now = time;
7185: my $newcourse = {
7186: $udom.'_'.$uname => {
7187: description => $description,
7188: inst_code => $inst_code,
7189: owner => $course_owner,
7190: type => $crstype,
7191: creator => $env{'user.name'}.':'.
7192: $env{'user.domain'},
7193: created => $now,
7194: context => $context,
7195: },
7196: };
7197: &courseidput($udom,$newcourse,$uhome,'notime');
7198: # set toplevel url
7199: my $topurl=$url;
7200: unless ($nonstandard) {
7201: # ------------------------------------------ For standard courses, make top url
7202: my $mapurl=&clutter($url);
7203: if ($mapurl eq '/res/') { $mapurl=''; }
7204: $env{'form.initmap'}=(<<ENDINITMAP);
7205: <map>
7206: <resource id="1" type="start"></resource>
7207: <resource id="2" src="$mapurl"></resource>
7208: <resource id="3" type="finish"></resource>
7209: <link index="1" from="1" to="2"></link>
7210: <link index="2" from="2" to="3"></link>
7211: </map>
7212: ENDINITMAP
7213: $topurl=&declutter(
7214: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
7215: );
7216: }
7217: # ----------------------------------------------------------- Write preferences
7218: &writecoursepref($udom.'_'.$uname,
7219: ('description' => $description,
7220: 'url' => $topurl,
7221: 'internal.creator' => $env{'user.name'}.':'.
7222: $env{'user.domain'},
7223: 'internal.created' => $now,
7224: 'internal.creationcontext' => $context)
7225: );
7226: return '/'.$udom.'/'.$uname;
7227: }
7228:
7229: # ------------------------------------------------------------------- Create ID
7230: sub generate_coursenum {
7231: my ($udom,$crstype) = @_;
7232: my $domdesc = &domain($udom);
7233: return 'error: invalid domain' if ($domdesc eq '');
7234: my $first;
7235: if ($crstype eq 'Community') {
7236: $first = '0';
7237: } else {
7238: $first = int(1+rand(9));
7239: }
7240: my $uname=$first.
7241: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7242: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7243: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7244: # ----------------------------------------------- Make sure that does not exist
7245: my $uhome=&homeserver($uname,$udom,'true');
7246: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7247: if ($crstype eq 'Community') {
7248: $first = '0';
7249: } else {
7250: $first = int(1+rand(9));
7251: }
7252: $uname=$first.
7253: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7254: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7255: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7256: $uhome=&homeserver($uname,$udom,'true');
7257: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7258: return 'error: unable to generate unique course-ID';
7259: }
7260: }
7261: return $uname;
7262: }
7263:
7264: sub is_course {
7265: my ($cdom,$cnum) = @_;
7266: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
7267: undef,'.');
7268: if (exists($courses{$cdom.'_'.$cnum})) {
7269: return 1;
7270: }
7271: return 0;
7272: }
7273:
7274: sub store_userdata {
7275: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
7276: my $result;
7277: if ($datakey ne '') {
7278: if (ref($storehash) eq 'HASH') {
7279: if ($udom eq '' || $uname eq '') {
7280: $udom = $env{'user.domain'};
7281: $uname = $env{'user.name'};
7282: }
7283: my $uhome=&homeserver($uname,$udom);
7284: if (($uhome eq '') || ($uhome eq 'no_host')) {
7285: $result = 'error: no_host';
7286: } else {
7287: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
7288: $storehash->{'host'} = $perlvar{'lonHostID'};
7289:
7290: my $namevalue='';
7291: foreach my $key (keys(%{$storehash})) {
7292: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7293: }
7294: $namevalue=~s/\&$//;
7295: $result = &reply("store:$env{'user.domain'}:$env{'user.name'}:".
7296: "$namespace:$datakey:$namevalue",$uhome);
7297: }
7298: } else {
7299: $result = 'error: data to store was not a hash reference';
7300: }
7301: } else {
7302: $result= 'error: invalid requestkey';
7303: }
7304: return $result;
7305: }
7306:
7307: # ---------------------------------------------------------- Assign Custom Role
7308:
7309: sub assigncustomrole {
7310: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
7311: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
7312: $end,$start,$deleteflag,$selfenroll,$context);
7313: }
7314:
7315: # ----------------------------------------------------------------- Revoke Role
7316:
7317: sub revokerole {
7318: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
7319: my $now=time;
7320: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
7321: }
7322:
7323: # ---------------------------------------------------------- Revoke Custom Role
7324:
7325: sub revokecustomrole {
7326: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
7327: my $now=time;
7328: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
7329: $deleteflag,$selfenroll,$context);
7330: }
7331:
7332: # ------------------------------------------------------------ Disk usage
7333: sub diskusage {
7334: my ($udom,$uname,$directorypath,$getpropath)=@_;
7335: $directorypath =~ s/\/$//;
7336: my $listing=&reply('du2:'.&escape($directorypath).':'
7337: .&escape($getpropath).':'.&escape($uname).':'
7338: .&escape($udom),homeserver($uname,$udom));
7339: if ($listing eq 'unknown_cmd') {
7340: if ($getpropath) {
7341: $directorypath = &propath($udom,$uname).'/'.$directorypath;
7342: }
7343: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
7344: }
7345: return $listing;
7346: }
7347:
7348: sub is_locked {
7349: my ($file_name, $domain, $user, $which) = @_;
7350: my @check;
7351: my $is_locked;
7352: push (@check,$file_name);
7353: my %locked = &get('file_permissions',\@check,
7354: $env{'user.domain'},$env{'user.name'});
7355: my ($tmp)=keys(%locked);
7356: if ($tmp=~/^error:/) { undef(%locked); }
7357:
7358: if (ref($locked{$file_name}) eq 'ARRAY') {
7359: $is_locked = 'false';
7360: foreach my $entry (@{$locked{$file_name}}) {
7361: if (ref($entry) eq 'ARRAY') {
7362: $is_locked = 'true';
7363: if (ref($which) eq 'ARRAY') {
7364: push(@{$which},$entry);
7365: } else {
7366: last;
7367: }
7368: }
7369: }
7370: } else {
7371: $is_locked = 'false';
7372: }
7373: return $is_locked;
7374: }
7375:
7376: sub declutter_portfile {
7377: my ($file) = @_;
7378: $file =~ s{^(/portfolio/|portfolio/)}{/};
7379: return $file;
7380: }
7381:
7382: # ------------------------------------------------------------- Mark as Read Only
7383:
7384: sub mark_as_readonly {
7385: my ($domain,$user,$files,$what) = @_;
7386: my %current_permissions = &dump('file_permissions',$domain,$user);
7387: my ($tmp)=keys(%current_permissions);
7388: if ($tmp=~/^error:/) { undef(%current_permissions); }
7389: foreach my $file (@{$files}) {
7390: $file = &declutter_portfile($file);
7391: push(@{$current_permissions{$file}},$what);
7392: }
7393: &put('file_permissions',\%current_permissions,$domain,$user);
7394: return;
7395: }
7396:
7397: # ------------------------------------------------------------Save Selected Files
7398:
7399: sub save_selected_files {
7400: my ($user, $path, @files) = @_;
7401: my $filename = $user."savedfiles";
7402: my @other_files = &files_not_in_path($user, $path);
7403: open (OUT, '>'.$tmpdir.$filename);
7404: foreach my $file (@files) {
7405: print (OUT $env{'form.currentpath'}.$file."\n");
7406: }
7407: foreach my $file (@other_files) {
7408: print (OUT $file."\n");
7409: }
7410: close (OUT);
7411: return 'ok';
7412: }
7413:
7414: sub clear_selected_files {
7415: my ($user) = @_;
7416: my $filename = $user."savedfiles";
7417: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7418: print (OUT undef);
7419: close (OUT);
7420: return ("ok");
7421: }
7422:
7423: sub files_in_path {
7424: my ($user, $path) = @_;
7425: my $filename = $user."savedfiles";
7426: my %return_files;
7427: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7428: while (my $line_in = <IN>) {
7429: chomp ($line_in);
7430: my @paths_and_file = split (m!/!, $line_in);
7431: my $file_part = pop (@paths_and_file);
7432: my $path_part = join ('/', @paths_and_file);
7433: $path_part.='/';
7434: my $path_and_file = $path_part.$file_part;
7435: if ($path_part eq $path) {
7436: $return_files{$file_part}= 'selected';
7437: }
7438: }
7439: close (IN);
7440: return (\%return_files);
7441: }
7442:
7443: # called in portfolio select mode, to show files selected NOT in current directory
7444: sub files_not_in_path {
7445: my ($user, $path) = @_;
7446: my $filename = $user."savedfiles";
7447: my @return_files;
7448: my $path_part;
7449: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7450: while (my $line = <IN>) {
7451: #ok, I know it's clunky, but I want it to work
7452: my @paths_and_file = split(m|/|, $line);
7453: my $file_part = pop(@paths_and_file);
7454: chomp($file_part);
7455: my $path_part = join('/', @paths_and_file);
7456: $path_part .= '/';
7457: my $path_and_file = $path_part.$file_part;
7458: if ($path_part ne $path) {
7459: push(@return_files, ($path_and_file));
7460: }
7461: }
7462: close(OUT);
7463: return (@return_files);
7464: }
7465:
7466: #----------------------------------------------Get portfolio file permissions
7467:
7468: sub get_portfile_permissions {
7469: my ($domain,$user) = @_;
7470: my %current_permissions = &dump('file_permissions',$domain,$user);
7471: my ($tmp)=keys(%current_permissions);
7472: if ($tmp=~/^error:/) { undef(%current_permissions); }
7473: return \%current_permissions;
7474: }
7475:
7476: #---------------------------------------------Get portfolio file access controls
7477:
7478: sub get_access_controls {
7479: my ($current_permissions,$group,$file) = @_;
7480: my %access;
7481: my $real_file = $file;
7482: $file =~ s/\.meta$//;
7483: if (defined($file)) {
7484: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
7485: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
7486: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
7487: }
7488: }
7489: } else {
7490: foreach my $key (keys(%{$current_permissions})) {
7491: if ($key =~ /\0accesscontrol$/) {
7492: if (defined($group)) {
7493: if ($key !~ m-^\Q$group\E/-) {
7494: next;
7495: }
7496: }
7497: my ($fullpath) = split(/\0/,$key);
7498: if (ref($$current_permissions{$key}) eq 'HASH') {
7499: foreach my $control (keys(%{$$current_permissions{$key}})) {
7500: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
7501: }
7502: }
7503: }
7504: }
7505: }
7506: return %access;
7507: }
7508:
7509: sub modify_access_controls {
7510: my ($file_name,$changes,$domain,$user)=@_;
7511: my ($outcome,$deloutcome);
7512: my %store_permissions;
7513: my %new_values;
7514: my %new_control;
7515: my %translation;
7516: my @deletions = ();
7517: my $now = time;
7518: if (exists($$changes{'activate'})) {
7519: if (ref($$changes{'activate'}) eq 'HASH') {
7520: my @newitems = sort(keys(%{$$changes{'activate'}}));
7521: my $numnew = scalar(@newitems);
7522: for (my $i=0; $i<$numnew; $i++) {
7523: my $newkey = $newitems[$i];
7524: my $newid = &Apache::loncommon::get_cgi_id();
7525: if ($newkey =~ /^\d+:/) {
7526: $newkey =~ s/^(\d+)/$newid/;
7527: $translation{$1} = $newid;
7528: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
7529: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
7530: $translation{$1} = $newid;
7531: }
7532: $new_values{$file_name."\0".$newkey} =
7533: $$changes{'activate'}{$newitems[$i]};
7534: $new_control{$newkey} = $now;
7535: }
7536: }
7537: }
7538: my %todelete;
7539: my %changed_items;
7540: foreach my $action ('delete','update') {
7541: if (exists($$changes{$action})) {
7542: if (ref($$changes{$action}) eq 'HASH') {
7543: foreach my $key (keys(%{$$changes{$action}})) {
7544: my ($itemnum) = ($key =~ /^([^:]+):/);
7545: if ($action eq 'delete') {
7546: $todelete{$itemnum} = 1;
7547: } else {
7548: $changed_items{$itemnum} = $key;
7549: }
7550: }
7551: }
7552: }
7553: }
7554: # get lock on access controls for file.
7555: my $lockhash = {
7556: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7557: ':'.$env{'user.domain'},
7558: };
7559: my $tries = 0;
7560: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7561:
7562: while (($gotlock ne 'ok') && $tries <3) {
7563: $tries ++;
7564: sleep 1;
7565: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7566: }
7567: if ($gotlock eq 'ok') {
7568: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7569: my ($tmp)=keys(%curr_permissions);
7570: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7571: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7572: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7573: if (ref($curr_controls) eq 'HASH') {
7574: foreach my $control_item (keys(%{$curr_controls})) {
7575: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7576: if (defined($todelete{$itemnum})) {
7577: push(@deletions,$file_name."\0".$control_item);
7578: } else {
7579: if (defined($changed_items{$itemnum})) {
7580: $new_control{$changed_items{$itemnum}} = $now;
7581: push(@deletions,$file_name."\0".$control_item);
7582: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7583: } else {
7584: $new_control{$control_item} = $$curr_controls{$control_item};
7585: }
7586: }
7587: }
7588: }
7589: }
7590: my ($group);
7591: if (&is_course($domain,$user)) {
7592: ($group,my $file) = split(/\//,$file_name,2);
7593: }
7594: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7595: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7596: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7597: # remove lock
7598: my @del_lock = ($file_name."\0".'locked_access_records');
7599: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7600: my $sqlresult =
7601: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7602: $group);
7603: } else {
7604: $outcome = "error: could not obtain lockfile\n";
7605: }
7606: return ($outcome,$deloutcome,\%new_values,\%translation);
7607: }
7608:
7609: sub make_public_indefinitely {
7610: my ($requrl) = @_;
7611: my $now = time;
7612: my $action = 'activate';
7613: my $aclnum = 0;
7614: if (&is_portfolio_url($requrl)) {
7615: my (undef,$udom,$unum,$file_name,$group) =
7616: &parse_portfolio_url($requrl);
7617: my $current_perms = &get_portfile_permissions($udom,$unum);
7618: my %access_controls = &get_access_controls($current_perms,
7619: $group,$file_name);
7620: foreach my $key (keys(%{$access_controls{$file_name}})) {
7621: my ($num,$scope,$end,$start) =
7622: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7623: if ($scope eq 'public') {
7624: if ($start <= $now && $end == 0) {
7625: $action = 'none';
7626: } else {
7627: $action = 'update';
7628: $aclnum = $num;
7629: }
7630: last;
7631: }
7632: }
7633: if ($action eq 'none') {
7634: return 'ok';
7635: } else {
7636: my %changes;
7637: my $newend = 0;
7638: my $newstart = $now;
7639: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7640: $changes{$action}{$newkey} = {
7641: type => 'public',
7642: time => {
7643: start => $newstart,
7644: end => $newend,
7645: },
7646: };
7647: my ($outcome,$deloutcome,$new_values,$translation) =
7648: &modify_access_controls($file_name,\%changes,$udom,$unum);
7649: return $outcome;
7650: }
7651: } else {
7652: return 'invalid';
7653: }
7654: }
7655:
7656: #------------------------------------------------------Get Marked as Read Only
7657:
7658: sub get_marked_as_readonly {
7659: my ($domain,$user,$what,$group) = @_;
7660: my $current_permissions = &get_portfile_permissions($domain,$user);
7661: my @readonly_files;
7662: my $cmp1=$what;
7663: if (ref($what)) { $cmp1=join('',@{$what}) };
7664: while (my ($file_name,$value) = each(%{$current_permissions})) {
7665: if (defined($group)) {
7666: if ($file_name !~ m-^\Q$group\E/-) {
7667: next;
7668: }
7669: }
7670: if (ref($value) eq "ARRAY"){
7671: foreach my $stored_what (@{$value}) {
7672: my $cmp2=$stored_what;
7673: if (ref($stored_what) eq 'ARRAY') {
7674: $cmp2=join('',@{$stored_what});
7675: }
7676: if ($cmp1 eq $cmp2) {
7677: push(@readonly_files, $file_name);
7678: last;
7679: } elsif (!defined($what)) {
7680: push(@readonly_files, $file_name);
7681: last;
7682: }
7683: }
7684: }
7685: }
7686: return @readonly_files;
7687: }
7688: #-----------------------------------------------------------Get Marked as Read Only Hash
7689:
7690: sub get_marked_as_readonly_hash {
7691: my ($current_permissions,$group,$what) = @_;
7692: my %readonly_files;
7693: while (my ($file_name,$value) = each(%{$current_permissions})) {
7694: if (defined($group)) {
7695: if ($file_name !~ m-^\Q$group\E/-) {
7696: next;
7697: }
7698: }
7699: if (ref($value) eq "ARRAY"){
7700: foreach my $stored_what (@{$value}) {
7701: if (ref($stored_what) eq 'ARRAY') {
7702: foreach my $lock_descriptor(@{$stored_what}) {
7703: if ($lock_descriptor eq 'graded') {
7704: $readonly_files{$file_name} = 'graded';
7705: } elsif ($lock_descriptor eq 'handback') {
7706: $readonly_files{$file_name} = 'handback';
7707: } else {
7708: if (!exists($readonly_files{$file_name})) {
7709: $readonly_files{$file_name} = 'locked';
7710: }
7711: }
7712: }
7713: }
7714: }
7715: }
7716: }
7717: return %readonly_files;
7718: }
7719: # ------------------------------------------------------------ Unmark as Read Only
7720:
7721: sub unmark_as_readonly {
7722: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7723: # for portfolio submissions, $what contains [$symb,$crsid]
7724: my ($domain,$user,$what,$file_name,$group) = @_;
7725: $file_name = &declutter_portfile($file_name);
7726: my $symb_crs = $what;
7727: if (ref($what)) { $symb_crs=join('',@$what); }
7728: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7729: my ($tmp)=keys(%current_permissions);
7730: if ($tmp=~/^error:/) { undef(%current_permissions); }
7731: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7732: foreach my $file (@readonly_files) {
7733: my $clean_file = &declutter_portfile($file);
7734: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7735: my $current_locks = $current_permissions{$file};
7736: my @new_locks;
7737: my @del_keys;
7738: if (ref($current_locks) eq "ARRAY"){
7739: foreach my $locker (@{$current_locks}) {
7740: my $compare=$locker;
7741: if (ref($locker) eq 'ARRAY') {
7742: $compare=join('',@{$locker});
7743: if ($compare ne $symb_crs) {
7744: push(@new_locks, $locker);
7745: }
7746: }
7747: }
7748: if (scalar(@new_locks) > 0) {
7749: $current_permissions{$file} = \@new_locks;
7750: } else {
7751: push(@del_keys, $file);
7752: &del('file_permissions',\@del_keys, $domain, $user);
7753: delete($current_permissions{$file});
7754: }
7755: }
7756: }
7757: &put('file_permissions',\%current_permissions,$domain,$user);
7758: return;
7759: }
7760:
7761: # ------------------------------------------------------------ Directory lister
7762:
7763: sub dirlist {
7764: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7765: $uri=~s/^\///;
7766: $uri=~s/\/$//;
7767: my ($udom, $uname);
7768: if ($getuserdir) {
7769: $udom = $userdomain;
7770: $uname = $username;
7771: } else {
7772: (undef,$udom,$uname)=split(/\//,$uri);
7773: if(defined($userdomain)) {
7774: $udom = $userdomain;
7775: }
7776: if(defined($username)) {
7777: $uname = $username;
7778: }
7779: }
7780: my ($dirRoot,$listing,@listing_results);
7781:
7782: $dirRoot = $perlvar{'lonDocRoot'};
7783: if (defined($getpropath)) {
7784: $dirRoot = &propath($udom,$uname);
7785: $dirRoot =~ s/\/$//;
7786: } elsif (defined($getuserdir)) {
7787: my $subdir=$uname.'__';
7788: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7789: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7790: ."/$udom/$subdir/$uname";
7791: } elsif (defined($alternateRoot)) {
7792: $dirRoot = $alternateRoot;
7793: }
7794:
7795: if($udom) {
7796: if($uname) {
7797: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7798: .$getuserdir.':'.&escape($dirRoot)
7799: .':'.&escape($uname).':'.&escape($udom),
7800: &homeserver($uname,$udom));
7801: if ($listing eq 'unknown_cmd') {
7802: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7803: &homeserver($uname,$udom));
7804: } else {
7805: @listing_results = map { &unescape($_); } split(/:/,$listing);
7806: }
7807: if ($listing eq 'unknown_cmd') {
7808: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7809: &homeserver($uname,$udom));
7810: @listing_results = split(/:/,$listing);
7811: } else {
7812: @listing_results = map { &unescape($_); } split(/:/,$listing);
7813: }
7814: return @listing_results;
7815: } elsif(!$alternateRoot) {
7816: my %allusers;
7817: my %servers = &get_servers($udom,'library');
7818: foreach my $tryserver (keys(%servers)) {
7819: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7820: &escape($udom),$tryserver);
7821: if ($listing eq 'unknown_cmd') {
7822: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7823: $udom, $tryserver);
7824: } else {
7825: @listing_results = map { &unescape($_); } split(/:/,$listing);
7826: }
7827: if ($listing eq 'unknown_cmd') {
7828: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7829: $udom, $tryserver);
7830: @listing_results = split(/:/,$listing);
7831: } else {
7832: @listing_results =
7833: map { &unescape($_); } split(/:/,$listing);
7834: }
7835: if ($listing_results[0] ne 'no_such_dir' &&
7836: $listing_results[0] ne 'empty' &&
7837: $listing_results[0] ne 'con_lost') {
7838: foreach my $line (@listing_results) {
7839: my ($entry) = split(/&/,$line,2);
7840: $allusers{$entry} = 1;
7841: }
7842: }
7843: }
7844: my $alluserstr='';
7845: foreach my $user (sort(keys(%allusers))) {
7846: $alluserstr.=$user.'&user:';
7847: }
7848: $alluserstr=~s/:$//;
7849: return split(/:/,$alluserstr);
7850: } else {
7851: return ('missing user name');
7852: }
7853: } elsif(!defined($getpropath)) {
7854: my @all_domains = sort(&all_domains());
7855: foreach my $domain (@all_domains) {
7856: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7857: }
7858: return @all_domains;
7859: } else {
7860: return ('missing domain');
7861: }
7862: }
7863:
7864: # --------------------------------------------- GetFileTimestamp
7865: # This function utilizes dirlist and returns the date stamp for
7866: # when it was last modified. It will also return an error of -1
7867: # if an error occurs
7868:
7869: sub GetFileTimestamp {
7870: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7871: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7872: $studentName = &LONCAPA::clean_username($studentName);
7873: my ($fileStat) =
7874: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7875: undef,$getuserdir);
7876: my @stats = split('&', $fileStat);
7877: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7878: # @stats contains first the filename, then the stat output
7879: return $stats[10]; # so this is 10 instead of 9.
7880: } else {
7881: return -1;
7882: }
7883: }
7884:
7885: sub stat_file {
7886: my ($uri) = @_;
7887: $uri = &clutter_with_no_wrapper($uri);
7888:
7889: my ($udom,$uname,$file);
7890: if ($uri =~ m-^/(uploaded|editupload)/-) {
7891: ($udom,$uname,$file) =
7892: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7893: $file = 'userfiles/'.$file;
7894: }
7895: if ($uri =~ m-^/res/-) {
7896: ($udom,$uname) =
7897: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7898: $file = $uri;
7899: }
7900:
7901: if (!$udom || !$uname || !$file) {
7902: # unable to handle the uri
7903: return ();
7904: }
7905: my $getpropath;
7906: if ($file =~ /^userfiles\//) {
7907: $getpropath = 1;
7908: }
7909: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7910: my @stats = split('&', $result);
7911:
7912: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7913: shift(@stats); #filename is first
7914: return @stats;
7915: }
7916: return ();
7917: }
7918:
7919: # -------------------------------------------------------- Value of a Condition
7920:
7921: # gets the value of a specific preevaluated condition
7922: # stored in the string $env{user.state.<cid>}
7923: # or looks up a condition reference in the bighash and if if hasn't
7924: # already been evaluated recurses into docondval to get the value of
7925: # the condition, then memoizing it to
7926: # $env{user.state.<cid>.<condition>}
7927: sub directcondval {
7928: my $number=shift;
7929: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7930: &Apache::lonuserstate::evalstate();
7931: }
7932: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7933: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7934: } elsif ($number =~ /^_/) {
7935: my $sub_condition;
7936: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7937: &GDBM_READER(),0640)) {
7938: $sub_condition=$bighash{'conditions'.$number};
7939: untie(%bighash);
7940: }
7941: my $value = &docondval($sub_condition);
7942: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7943: return $value;
7944: }
7945: if ($env{'user.state.'.$env{'request.course.id'}}) {
7946: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
7947: } else {
7948: return 2;
7949: }
7950: }
7951:
7952: # get the collection of conditions for this resource
7953: sub condval {
7954: my $condidx=shift;
7955: my $allpathcond='';
7956: foreach my $cond (split(/\|/,$condidx)) {
7957: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
7958: $allpathcond.=
7959: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
7960: }
7961: }
7962: $allpathcond=~s/\|$//;
7963: return &docondval($allpathcond);
7964: }
7965:
7966: #evaluates an expression of conditions
7967: sub docondval {
7968: my ($allpathcond) = @_;
7969: my $result=0;
7970: if ($env{'request.course.id'}
7971: && defined($allpathcond)) {
7972: my $operand='|';
7973: my @stack;
7974: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
7975: if ($chunk eq '(') {
7976: push @stack,($operand,$result);
7977: } elsif ($chunk eq ')') {
7978: my $before=pop @stack;
7979: if (pop @stack eq '&') {
7980: $result=$result>$before?$before:$result;
7981: } else {
7982: $result=$result>$before?$result:$before;
7983: }
7984: } elsif (($chunk eq '&') || ($chunk eq '|')) {
7985: $operand=$chunk;
7986: } else {
7987: my $new=directcondval($chunk);
7988: if ($operand eq '&') {
7989: $result=$result>$new?$new:$result;
7990: } else {
7991: $result=$result>$new?$result:$new;
7992: }
7993: }
7994: }
7995: }
7996: return $result;
7997: }
7998:
7999: # ---------------------------------------------------- Devalidate courseresdata
8000:
8001: sub devalidatecourseresdata {
8002: my ($coursenum,$coursedomain)=@_;
8003: my $hashid=$coursenum.':'.$coursedomain;
8004: &devalidate_cache_new('courseres',$hashid);
8005: }
8006:
8007:
8008: # --------------------------------------------------- Course Resourcedata Query
8009: #
8010: # Parameters:
8011: # $coursenum - Number of the course.
8012: # $coursedomain - Domain at which the course was created.
8013: # Returns:
8014: # A hash of the course parameters along (I think) with timestamps
8015: # and version info.
8016:
8017: sub get_courseresdata {
8018: my ($coursenum,$coursedomain)=@_;
8019: my $coursehom=&homeserver($coursenum,$coursedomain);
8020: my $hashid=$coursenum.':'.$coursedomain;
8021: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8022: my %dumpreply;
8023: unless (defined($cached)) {
8024: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8025: $result=\%dumpreply;
8026: my ($tmp) = keys(%dumpreply);
8027: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8028: &do_cache_new('courseres',$hashid,$result,600);
8029: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8030: return $tmp;
8031: } elsif ($tmp =~ /^(error)/) {
8032: $result=undef;
8033: &do_cache_new('courseres',$hashid,$result,600);
8034: }
8035: }
8036: return $result;
8037: }
8038:
8039: sub devalidateuserresdata {
8040: my ($uname,$udom)=@_;
8041: my $hashid="$udom:$uname";
8042: &devalidate_cache_new('userres',$hashid);
8043: }
8044:
8045: sub get_userresdata {
8046: my ($uname,$udom)=@_;
8047: #most student don\'t have any data set, check if there is some data
8048: if (&EXT_cache_status($udom,$uname)) { return undef; }
8049:
8050: my $hashid="$udom:$uname";
8051: my ($result,$cached)=&is_cached_new('userres',$hashid);
8052: if (!defined($cached)) {
8053: my %resourcedata=&dump('resourcedata',$udom,$uname);
8054: $result=\%resourcedata;
8055: &do_cache_new('userres',$hashid,$result,600);
8056: }
8057: my ($tmp)=keys(%$result);
8058: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8059: return $result;
8060: }
8061: #error 2 occurs when the .db doesn't exist
8062: if ($tmp!~/error: 2 /) {
8063: &logthis("<font color=\"blue\">WARNING:".
8064: " Trying to get resource data for ".
8065: $uname." at ".$udom.": ".
8066: $tmp."</font>");
8067: } elsif ($tmp=~/error: 2 /) {
8068: #&EXT_cache_set($udom,$uname);
8069: &do_cache_new('userres',$hashid,undef,600);
8070: undef($tmp); # not really an error so don't send it back
8071: }
8072: return $tmp;
8073: }
8074: #----------------------------------------------- resdata - return resource data
8075: # Purpose:
8076: # Return resource data for either users or for a course.
8077: # Parameters:
8078: # $name - Course/user name.
8079: # $domain - Name of the domain the user/course is registered on.
8080: # $type - Type of thing $name is (must be 'course' or 'user'
8081: # @which - Array of names of resources desired.
8082: # Returns:
8083: # The value of the first reasource in @which that is found in the
8084: # resource hash.
8085: # Exceptional Conditions:
8086: # If the $type passed in is not valid (not the string 'course' or
8087: # 'user', an undefined reference is returned.
8088: # If none of the resources are found, an undef is returned
8089: sub resdata {
8090: my ($name,$domain,$type,@which)=@_;
8091: my $result;
8092: if ($type eq 'course') {
8093: $result=&get_courseresdata($name,$domain);
8094: } elsif ($type eq 'user') {
8095: $result=&get_userresdata($name,$domain);
8096: }
8097: if (!ref($result)) { return $result; }
8098: foreach my $item (@which) {
8099: if (defined($result->{$item->[0]})) {
8100: return [$result->{$item->[0]},$item->[1]];
8101: }
8102: }
8103: return undef;
8104: }
8105:
8106: #
8107: # EXT resource caching routines
8108: #
8109:
8110: sub clear_EXT_cache_status {
8111: &delenv('cache.EXT.');
8112: }
8113:
8114: sub EXT_cache_status {
8115: my ($target_domain,$target_user) = @_;
8116: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8117: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8118: # We know already the user has no data
8119: return 1;
8120: } else {
8121: return 0;
8122: }
8123: }
8124:
8125: sub EXT_cache_set {
8126: my ($target_domain,$target_user) = @_;
8127: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8128: #&appenv({$cachename => time});
8129: }
8130:
8131: # --------------------------------------------------------- Value of a Variable
8132: sub EXT {
8133:
8134: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8135: unless ($varname) { return ''; }
8136: #get real user name/domain, courseid and symb
8137: my $courseid;
8138: my $publicuser;
8139: if ($symbparm) {
8140: $symbparm=&get_symb_from_alias($symbparm);
8141: }
8142: if (!($uname && $udom)) {
8143: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8144: if (!$symbparm) { $symbparm=$cursymb; }
8145: } else {
8146: $courseid=$env{'request.course.id'};
8147: }
8148: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8149: my $rest;
8150: if (defined($therest[0])) {
8151: $rest=join('.',@therest);
8152: } else {
8153: $rest='';
8154: }
8155:
8156: my $qualifierrest=$qualifier;
8157: if ($rest) { $qualifierrest.='.'.$rest; }
8158: my $spacequalifierrest=$space;
8159: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
8160: if ($realm eq 'user') {
8161: # --------------------------------------------------------------- user.resource
8162: if ($space eq 'resource') {
8163: if ( (defined($Apache::lonhomework::parsing_a_problem)
8164: || defined($Apache::lonhomework::parsing_a_task))
8165: &&
8166: ($symbparm eq &symbread()) ) {
8167: # if we are in the middle of processing the resource the
8168: # get the value we are planning on committing
8169: if (defined($Apache::lonhomework::results{$qualifierrest})) {
8170: return $Apache::lonhomework::results{$qualifierrest};
8171: } else {
8172: return $Apache::lonhomework::history{$qualifierrest};
8173: }
8174: } else {
8175: my %restored;
8176: if ($publicuser || $env{'request.state'} eq 'construct') {
8177: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
8178: } else {
8179: %restored=&restore($symbparm,$courseid,$udom,$uname);
8180: }
8181: return $restored{$qualifierrest};
8182: }
8183: # ----------------------------------------------------------------- user.access
8184: } elsif ($space eq 'access') {
8185: # FIXME - not supporting calls for a specific user
8186: return &allowed($qualifier,$rest);
8187: # ------------------------------------------ user.preferences, user.environment
8188: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
8189: if (($uname eq $env{'user.name'}) &&
8190: ($udom eq $env{'user.domain'})) {
8191: return $env{join('.',('environment',$qualifierrest))};
8192: } else {
8193: my %returnhash;
8194: if (!$publicuser) {
8195: %returnhash=&userenvironment($udom,$uname,
8196: $qualifierrest);
8197: }
8198: return $returnhash{$qualifierrest};
8199: }
8200: # ----------------------------------------------------------------- user.course
8201: } elsif ($space eq 'course') {
8202: # FIXME - not supporting calls for a specific user
8203: return $env{join('.',('request.course',$qualifier))};
8204: # ------------------------------------------------------------------- user.role
8205: } elsif ($space eq 'role') {
8206: # FIXME - not supporting calls for a specific user
8207: my ($role,$where)=split(/\./,$env{'request.role'});
8208: if ($qualifier eq 'value') {
8209: return $role;
8210: } elsif ($qualifier eq 'extent') {
8211: return $where;
8212: }
8213: # ----------------------------------------------------------------- user.domain
8214: } elsif ($space eq 'domain') {
8215: return $udom;
8216: # ------------------------------------------------------------------- user.name
8217: } elsif ($space eq 'name') {
8218: return $uname;
8219: # ---------------------------------------------------- Any other user namespace
8220: } else {
8221: my %reply;
8222: if (!$publicuser) {
8223: %reply=&get($space,[$qualifierrest],$udom,$uname);
8224: }
8225: return $reply{$qualifierrest};
8226: }
8227: } elsif ($realm eq 'query') {
8228: # ---------------------------------------------- pull stuff out of query string
8229: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
8230: [$spacequalifierrest]);
8231: return $env{'form.'.$spacequalifierrest};
8232: } elsif ($realm eq 'request') {
8233: # ------------------------------------------------------------- request.browser
8234: if ($space eq 'browser') {
8235: if ($qualifier eq 'textremote') {
8236: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
8237: return 1;
8238: } else {
8239: return 0;
8240: }
8241: } else {
8242: return $env{'browser.'.$qualifier};
8243: }
8244: # ------------------------------------------------------------ request.filename
8245: } else {
8246: return $env{'request.'.$spacequalifierrest};
8247: }
8248: } elsif ($realm eq 'course') {
8249: # ---------------------------------------------------------- course.description
8250: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
8251: } elsif ($realm eq 'resource') {
8252:
8253: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
8254: if (!$symbparm) { $symbparm=&symbread(); }
8255: }
8256:
8257: if ($space eq 'title') {
8258: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
8259: return &gettitle($symbparm);
8260: }
8261:
8262: if ($space eq 'map') {
8263: my ($map) = &decode_symb($symbparm);
8264: return &symbread($map);
8265: }
8266: if ($space eq 'filename') {
8267: if ($symbparm) {
8268: return &clutter((&decode_symb($symbparm))[2]);
8269: }
8270: return &hreflocation('',$env{'request.filename'});
8271: }
8272:
8273: my ($section, $group, @groups);
8274: my ($courselevelm,$courselevel);
8275: if ($symbparm && defined($courseid) &&
8276: $courseid eq $env{'request.course.id'}) {
8277:
8278: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
8279:
8280: # ----------------------------------------------------- Cascading lookup scheme
8281: my $symbp=$symbparm;
8282: my $mapp=&deversion((&decode_symb($symbp))[0]);
8283:
8284: my $symbparm=$symbp.'.'.$spacequalifierrest;
8285: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
8286:
8287: if (($env{'user.name'} eq $uname) &&
8288: ($env{'user.domain'} eq $udom)) {
8289: $section=$env{'request.course.sec'};
8290: @groups = split(/:/,$env{'request.course.groups'});
8291: @groups=&sort_course_groups($courseid,@groups);
8292: } else {
8293: if (! defined($usection)) {
8294: $section=&getsection($udom,$uname,$courseid);
8295: } else {
8296: $section = $usection;
8297: }
8298: @groups = &get_users_groups($udom,$uname,$courseid);
8299: }
8300:
8301: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
8302: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
8303: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
8304:
8305: $courselevel=$courseid.'.'.$spacequalifierrest;
8306: my $courselevelr=$courseid.'.'.$symbparm;
8307: $courselevelm=$courseid.'.'.$mapparm;
8308:
8309: # ----------------------------------------------------------- first, check user
8310:
8311: my $userreply=&resdata($uname,$udom,'user',
8312: ([$courselevelr,'resource'],
8313: [$courselevelm,'map' ],
8314: [$courselevel, 'course' ]));
8315: if (defined($userreply)) { return &get_reply($userreply); }
8316:
8317: # ------------------------------------------------ second, check some of course
8318: my $coursereply;
8319: if (@groups > 0) {
8320: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
8321: $mapparm,$spacequalifierrest);
8322: if (defined($coursereply)) { return &get_reply($coursereply); }
8323: }
8324:
8325: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8326: $env{'course.'.$courseid.'.domain'},
8327: 'course',
8328: ([$seclevelr, 'resource'],
8329: [$seclevelm, 'map' ],
8330: [$seclevel, 'course' ],
8331: [$courselevelr,'resource']));
8332: if (defined($coursereply)) { return &get_reply($coursereply); }
8333:
8334: # ------------------------------------------------------ third, check map parms
8335: my %parmhash=();
8336: my $thisparm='';
8337: if (tie(%parmhash,'GDBM_File',
8338: $env{'request.course.fn'}.'_parms.db',
8339: &GDBM_READER(),0640)) {
8340: $thisparm=$parmhash{$symbparm};
8341: untie(%parmhash);
8342: }
8343: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
8344: }
8345: # ------------------------------------------ fourth, look in resource metadata
8346:
8347: $spacequalifierrest=~s/\./\_/;
8348: my $filename;
8349: if (!$symbparm) { $symbparm=&symbread(); }
8350: if ($symbparm) {
8351: $filename=(&decode_symb($symbparm))[2];
8352: } else {
8353: $filename=$env{'request.filename'};
8354: }
8355: my $metadata=&metadata($filename,$spacequalifierrest);
8356: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8357: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
8358: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8359:
8360: # ---------------------------------------------- fourth, look in rest of course
8361: if ($symbparm && defined($courseid) &&
8362: $courseid eq $env{'request.course.id'}) {
8363: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8364: $env{'course.'.$courseid.'.domain'},
8365: 'course',
8366: ([$courselevelm,'map' ],
8367: [$courselevel, 'course']));
8368: if (defined($coursereply)) { return &get_reply($coursereply); }
8369: }
8370: # ------------------------------------------------------------------ Cascade up
8371: unless ($space eq '0') {
8372: my @parts=split(/_/,$space);
8373: my $id=pop(@parts);
8374: my $part=join('_',@parts);
8375: if ($part eq '') { $part='0'; }
8376: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
8377: $symbparm,$udom,$uname,$section,1);
8378: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
8379: }
8380: if ($recurse) { return undef; }
8381: my $pack_def=&packages_tab_default($filename,$varname);
8382: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
8383: # ---------------------------------------------------- Any other user namespace
8384: } elsif ($realm eq 'environment') {
8385: # ----------------------------------------------------------------- environment
8386: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
8387: return $env{'environment.'.$spacequalifierrest};
8388: } else {
8389: if ($uname eq 'anonymous' && $udom eq '') {
8390: return '';
8391: }
8392: my %returnhash=&userenvironment($udom,$uname,
8393: $spacequalifierrest);
8394: return $returnhash{$spacequalifierrest};
8395: }
8396: } elsif ($realm eq 'system') {
8397: # ----------------------------------------------------------------- system.time
8398: if ($space eq 'time') {
8399: return time;
8400: }
8401: } elsif ($realm eq 'server') {
8402: # ----------------------------------------------------------------- system.time
8403: if ($space eq 'name') {
8404: return $ENV{'SERVER_NAME'};
8405: }
8406: }
8407: return '';
8408: }
8409:
8410: sub get_reply {
8411: my ($reply_value) = @_;
8412: if (ref($reply_value) eq 'ARRAY') {
8413: if (wantarray) {
8414: return @$reply_value;
8415: }
8416: return $reply_value->[0];
8417: } else {
8418: return $reply_value;
8419: }
8420: }
8421:
8422: sub check_group_parms {
8423: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
8424: my @groupitems = ();
8425: my $resultitem;
8426: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
8427: foreach my $group (@{$groups}) {
8428: foreach my $level (@levels) {
8429: my $item = $courseid.'.['.$group.'].'.$level->[0];
8430: push(@groupitems,[$item,$level->[1]]);
8431: }
8432: }
8433: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
8434: $env{'course.'.$courseid.'.domain'},
8435: 'course',@groupitems);
8436: return $coursereply;
8437: }
8438:
8439: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
8440: my ($courseid,@groups) = @_;
8441: @groups = sort(@groups);
8442: return @groups;
8443: }
8444:
8445: sub packages_tab_default {
8446: my ($uri,$varname)=@_;
8447: my (undef,$part,$name)=split(/\./,$varname);
8448:
8449: my (@extension,@specifics,$do_default);
8450: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
8451: my ($pack_type,$pack_part)=split(/_/,$package,2);
8452: if ($pack_type eq 'default') {
8453: $do_default=1;
8454: } elsif ($pack_type eq 'extension') {
8455: push(@extension,[$package,$pack_type,$pack_part]);
8456: } elsif ($pack_part eq $part || $pack_type eq 'part') {
8457: # only look at packages defaults for packages that this id is
8458: push(@specifics,[$package,$pack_type,$pack_part]);
8459: }
8460: }
8461: # first look for a package that matches the requested part id
8462: foreach my $package (@specifics) {
8463: my (undef,$pack_type,$pack_part)=@{$package};
8464: next if ($pack_part ne $part);
8465: if (defined($packagetab{"$pack_type&$name&default"})) {
8466: return $packagetab{"$pack_type&$name&default"};
8467: }
8468: }
8469: # look for any possible matching non extension_ package
8470: foreach my $package (@specifics) {
8471: my (undef,$pack_type,$pack_part)=@{$package};
8472: if (defined($packagetab{"$pack_type&$name&default"})) {
8473: return $packagetab{"$pack_type&$name&default"};
8474: }
8475: if ($pack_type eq 'part') { $pack_part='0'; }
8476: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
8477: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
8478: }
8479: }
8480: # look for any posible extension_ match
8481: foreach my $package (@extension) {
8482: my ($package,$pack_type)=@{$package};
8483: if (defined($packagetab{"$pack_type&$name&default"})) {
8484: return $packagetab{"$pack_type&$name&default"};
8485: }
8486: if (defined($packagetab{$package."&$name&default"})) {
8487: return $packagetab{$package."&$name&default"};
8488: }
8489: }
8490: # look for a global default setting
8491: if ($do_default && defined($packagetab{"default&$name&default"})) {
8492: return $packagetab{"default&$name&default"};
8493: }
8494: return undef;
8495: }
8496:
8497: sub add_prefix_and_part {
8498: my ($prefix,$part)=@_;
8499: my $keyroot;
8500: if (defined($prefix) && $prefix !~ /^__/) {
8501: # prefix that has a part already
8502: $keyroot=$prefix;
8503: } elsif (defined($prefix)) {
8504: # prefix that is missing a part
8505: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
8506: } else {
8507: # no prefix at all
8508: if (defined($part)) { $keyroot='_'.$part; }
8509: }
8510: return $keyroot;
8511: }
8512:
8513: # ---------------------------------------------------------------- Get metadata
8514:
8515: my %metaentry;
8516: my %importedpartids;
8517: sub metadata {
8518: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
8519: $uri=&declutter($uri);
8520: # if it is a non metadata possible uri return quickly
8521: if (($uri eq '') ||
8522: (($uri =~ m|^/*adm/|) &&
8523: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
8524: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$}) || ($uri =~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
8525: return undef;
8526: }
8527: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
8528: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
8529: return undef;
8530: }
8531: my $filename=$uri;
8532: $uri=~s/\.meta$//;
8533: #
8534: # Is the metadata already cached?
8535: # Look at timestamp of caching
8536: # Everything is cached by the main uri, libraries are never directly cached
8537: #
8538: if (!defined($liburi)) {
8539: my ($result,$cached)=&is_cached_new('meta',$uri);
8540: if (defined($cached)) { return $result->{':'.$what}; }
8541: }
8542: {
8543: # Imported parts would go here
8544: my %importedids=();
8545: my @origfileimportpartids=();
8546: my $importedparts=0;
8547: #
8548: # Is this a recursive call for a library?
8549: #
8550: # if (! exists($metacache{$uri})) {
8551: # $metacache{$uri}={};
8552: # }
8553: my $cachetime = 60*60;
8554: if ($liburi) {
8555: $liburi=&declutter($liburi);
8556: $filename=$liburi;
8557: } else {
8558: &devalidate_cache_new('meta',$uri);
8559: undef(%metaentry);
8560: }
8561: my %metathesekeys=();
8562: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8563: my $metastring;
8564: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8565: my $which = &hreflocation('','/'.($liburi || $uri));
8566: $metastring =
8567: &Apache::lonnet::ssi_body($which,
8568: ('grade_target' => 'meta'));
8569: $cachetime = 1; # only want this cached in the child not long term
8570: } elsif ($uri !~ m -^(editupload)/-) {
8571: my $file=&filelocation('',&clutter($filename));
8572: #push(@{$metaentry{$uri.'.file'}},$file);
8573: $metastring=&getfile($file);
8574: }
8575: my $parser=HTML::LCParser->new(\$metastring);
8576: my $token;
8577: undef %metathesekeys;
8578: while ($token=$parser->get_token) {
8579: if ($token->[0] eq 'S') {
8580: if (defined($token->[2]->{'package'})) {
8581: #
8582: # This is a package - get package info
8583: #
8584: my $package=$token->[2]->{'package'};
8585: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8586: if (defined($token->[2]->{'id'})) {
8587: $keyroot.='_'.$token->[2]->{'id'};
8588: }
8589: if ($metaentry{':packages'}) {
8590: $metaentry{':packages'}.=','.$package.$keyroot;
8591: } else {
8592: $metaentry{':packages'}=$package.$keyroot;
8593: }
8594: foreach my $pack_entry (keys(%packagetab)) {
8595: my $part=$keyroot;
8596: $part=~s/^\_//;
8597: if ($pack_entry=~/^\Q$package\E\&/ ||
8598: $pack_entry=~/^\Q$package\E_0\&/) {
8599: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8600: # ignore package.tab specified default values
8601: # here &package_tab_default() will fetch those
8602: if ($subp eq 'default') { next; }
8603: my $value=$packagetab{$pack_entry};
8604: my $unikey;
8605: if ($pack =~ /_0$/) {
8606: $unikey='parameter_0_'.$name;
8607: $part=0;
8608: } else {
8609: $unikey='parameter'.$keyroot.'_'.$name;
8610: }
8611: if ($subp eq 'display') {
8612: $value.=' [Part: '.$part.']';
8613: }
8614: $metaentry{':'.$unikey.'.part'}=$part;
8615: $metathesekeys{$unikey}=1;
8616: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8617: $metaentry{':'.$unikey.'.'.$subp}=$value;
8618: }
8619: if (defined($metaentry{':'.$unikey.'.default'})) {
8620: $metaentry{':'.$unikey}=
8621: $metaentry{':'.$unikey.'.default'};
8622: }
8623: }
8624: }
8625: } else {
8626: #
8627: # This is not a package - some other kind of start tag
8628: #
8629: my $entry=$token->[1];
8630: my $unikey='';
8631:
8632: if ($entry eq 'import') {
8633: #
8634: # Importing a library here
8635: #
8636: my $location=$parser->get_text('/import');
8637: my $dir=$filename;
8638: $dir=~s|[^/]*$||;
8639: $location=&filelocation($dir,$location);
8640:
8641: my $importmode=$token->[2]->{'importmode'};
8642: if ($importmode eq 'problem') {
8643: # Import as problem/response
8644: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8645: } elsif ($importmode eq 'part') {
8646: # Import as part(s)
8647: $importedparts=1;
8648: # We need to get the original file and the imported file to get the part order correct
8649: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
8650: # Load and inspect original file
8651: if ($#origfileimportpartids<0) {
8652: undef(%importedpartids);
8653: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
8654: my $origfile=&getfile($origfilelocation);
8655: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8656: }
8657:
8658: # Load and inspect imported file
8659: my $impfile=&getfile($location);
8660: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8661: if ($#impfilepartids>=0) {
8662: # This problem had parts
8663: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
8664: } else {
8665: # Importing by turning a single problem into a problem part
8666: # It gets the import-tags ID as part-ID
8667: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
8668: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
8669: }
8670: } else {
8671: # Normal import
8672: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8673: if (defined($token->[2]->{'id'})) {
8674: $unikey.='_'.$token->[2]->{'id'};
8675: }
8676: }
8677:
8678: if ($depthcount<20) {
8679: my $metadata =
8680: &metadata($uri,'keys', $location,$unikey,
8681: $depthcount+1);
8682: foreach my $meta (split(',',$metadata)) {
8683: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8684: $metathesekeys{$meta}=1;
8685: }
8686:
8687: }
8688: } else {
8689: #
8690: # Not importing, some other kind of non-package, non-library start tag
8691: #
8692: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
8693: if (defined($token->[2]->{'id'})) {
8694: $unikey.='_'.$token->[2]->{'id'};
8695: }
8696: if (defined($token->[2]->{'name'})) {
8697: $unikey.='_'.$token->[2]->{'name'};
8698: }
8699: $metathesekeys{$unikey}=1;
8700: foreach my $param (@{$token->[3]}) {
8701: $metaentry{':'.$unikey.'.'.$param} =
8702: $token->[2]->{$param};
8703: }
8704: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8705: my $default=$metaentry{':'.$unikey.'.default'};
8706: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8707: # only ws inside the tag, and not in default, so use default
8708: # as value
8709: $metaentry{':'.$unikey}=$default;
8710: } elsif ( $internaltext =~ /\S/ ) {
8711: # something interesting inside the tag
8712: $metaentry{':'.$unikey}=$internaltext;
8713: } else {
8714: # no interesting values, don't set a default
8715: }
8716: # end of not-a-package not-a-library import
8717: }
8718: # end of not-a-package start tag
8719: }
8720: # the next is the end of "start tag"
8721: }
8722: }
8723: my ($extension) = ($uri =~ /\.(\w+)$/);
8724: $extension = lc($extension);
8725: if ($extension eq 'htm') { $extension='html'; }
8726:
8727: foreach my $key (keys(%packagetab)) {
8728: #no specific packages #how's our extension
8729: if ($key!~/^extension_\Q$extension\E&/) { next; }
8730: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8731: \%metathesekeys);
8732: }
8733:
8734: if (!exists($metaentry{':packages'})
8735: || $packagetab{"import_defaults&extension_$extension"}) {
8736: foreach my $key (keys(%packagetab)) {
8737: #no specific packages well let's get default then
8738: if ($key!~/^default&/) { next; }
8739: &metadata_create_package_def($uri,$key,'default',
8740: \%metathesekeys);
8741: }
8742: }
8743: # are there custom rights to evaluate
8744: if ($metaentry{':copyright'} eq 'custom') {
8745:
8746: #
8747: # Importing a rights file here
8748: #
8749: unless ($depthcount) {
8750: my $location=$metaentry{':customdistributionfile'};
8751: my $dir=$filename;
8752: $dir=~s|[^/]*$||;
8753: $location=&filelocation($dir,$location);
8754: my $rights_metadata =
8755: &metadata($uri,'keys',$location,'_rights',
8756: $depthcount+1);
8757: foreach my $rights (split(',',$rights_metadata)) {
8758: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8759: $metathesekeys{$rights}=1;
8760: }
8761: }
8762: }
8763: # uniqifiy package listing
8764: my %seen;
8765: my @uniq_packages =
8766: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8767: $metaentry{':packages'} = join(',',@uniq_packages);
8768:
8769: if ($importedparts) {
8770: # We had imported parts and need to rebuild partorder
8771: $metaentry{':partorder'}='';
8772: $metathesekeys{'partorder'}=1;
8773: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
8774: if ($origfileimportpartids[$index] eq 'part') {
8775: # original part, part of the problem
8776: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
8777: } else {
8778: # we have imported parts at this position
8779: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
8780: }
8781: }
8782: $metaentry{':partorder'}=~s/^\,//;
8783: }
8784:
8785: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8786: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8787: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8788: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8789: # this is the end of "was not already recently cached
8790: }
8791: return $metaentry{':'.$what};
8792: }
8793:
8794: sub metadata_create_package_def {
8795: my ($uri,$key,$package,$metathesekeys)=@_;
8796: my ($pack,$name,$subp)=split(/\&/,$key);
8797: if ($subp eq 'default') { next; }
8798:
8799: if (defined($metaentry{':packages'})) {
8800: $metaentry{':packages'}.=','.$package;
8801: } else {
8802: $metaentry{':packages'}=$package;
8803: }
8804: my $value=$packagetab{$key};
8805: my $unikey;
8806: $unikey='parameter_0_'.$name;
8807: $metaentry{':'.$unikey.'.part'}=0;
8808: $$metathesekeys{$unikey}=1;
8809: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8810: $metaentry{':'.$unikey.'.'.$subp}=$value;
8811: }
8812: if (defined($metaentry{':'.$unikey.'.default'})) {
8813: $metaentry{':'.$unikey}=
8814: $metaentry{':'.$unikey.'.default'};
8815: }
8816: }
8817:
8818: sub metadata_generate_part0 {
8819: my ($metadata,$metacache,$uri) = @_;
8820: my %allnames;
8821: foreach my $metakey (keys(%$metadata)) {
8822: if ($metakey=~/^parameter\_(.*)/) {
8823: my $part=$$metacache{':'.$metakey.'.part'};
8824: my $name=$$metacache{':'.$metakey.'.name'};
8825: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8826: $allnames{$name}=$part;
8827: }
8828: }
8829: }
8830: foreach my $name (keys(%allnames)) {
8831: $$metadata{"parameter_0_$name"}=1;
8832: my $key=":parameter_0_$name";
8833: $$metacache{"$key.part"}='0';
8834: $$metacache{"$key.name"}=$name;
8835: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8836: $allnames{$name}.'_'.$name.
8837: '.type'};
8838: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8839: '.display'};
8840: my $expr='[Part: '.$allnames{$name}.']';
8841: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8842: $$metacache{"$key.display"}=$olddis;
8843: }
8844: }
8845:
8846: # ------------------------------------------------------ Devalidate title cache
8847:
8848: sub devalidate_title_cache {
8849: my ($url)=@_;
8850: if (!$env{'request.course.id'}) { return; }
8851: my $symb=&symbread($url);
8852: if (!$symb) { return; }
8853: my $key=$env{'request.course.id'}."\0".$symb;
8854: &devalidate_cache_new('title',$key);
8855: }
8856:
8857: # ------------------------------------------------- Get the title of a course
8858:
8859: sub current_course_title {
8860: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8861: }
8862: # ------------------------------------------------- Get the title of a resource
8863:
8864: sub gettitle {
8865: my $urlsymb=shift;
8866: my $symb=&symbread($urlsymb);
8867: if ($symb) {
8868: my $key=$env{'request.course.id'}."\0".$symb;
8869: my ($result,$cached)=&is_cached_new('title',$key);
8870: if (defined($cached)) {
8871: return $result;
8872: }
8873: my ($map,$resid,$url)=&decode_symb($symb);
8874: my $title='';
8875: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8876: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8877: } else {
8878: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8879: &GDBM_READER(),0640)) {
8880: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8881: $title=$bighash{'title_'.$mapid.'.'.$resid};
8882: untie(%bighash);
8883: }
8884: }
8885: $title=~s/\&colon\;/\:/gs;
8886: if ($title) {
8887: return &do_cache_new('title',$key,$title,600);
8888: }
8889: $urlsymb=$url;
8890: }
8891: my $title=&metadata($urlsymb,'title');
8892: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8893: return $title;
8894: }
8895:
8896: sub get_slot {
8897: my ($which,$cnum,$cdom)=@_;
8898: if (!$cnum || !$cdom) {
8899: (undef,my $courseid)=&whichuser();
8900: $cdom=$env{'course.'.$courseid.'.domain'};
8901: $cnum=$env{'course.'.$courseid.'.num'};
8902: }
8903: my $key=join("\0",'slots',$cdom,$cnum,$which);
8904: my %slotinfo;
8905: if (exists($remembered{$key})) {
8906: $slotinfo{$which} = $remembered{$key};
8907: } else {
8908: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8909: &Apache::lonhomework::showhash(%slotinfo);
8910: my ($tmp)=keys(%slotinfo);
8911: if ($tmp=~/^error:/) { return (); }
8912: $remembered{$key} = $slotinfo{$which};
8913: }
8914: if (ref($slotinfo{$which}) eq 'HASH') {
8915: return %{$slotinfo{$which}};
8916: }
8917: return $slotinfo{$which};
8918: }
8919: # ------------------------------------------------- Update symbolic store links
8920:
8921: sub symblist {
8922: my ($mapname,%newhash)=@_;
8923: $mapname=&deversion(&declutter($mapname));
8924: my %hash;
8925: if (($env{'request.course.fn'}) && (%newhash)) {
8926: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8927: &GDBM_WRCREAT(),0640)) {
8928: foreach my $url (keys(%newhash)) {
8929: next if ($url eq 'last_known'
8930: && $env{'form.no_update_last_known'});
8931: $hash{declutter($url)}=&encode_symb($mapname,
8932: $newhash{$url}->[1],
8933: $newhash{$url}->[0]);
8934: }
8935: if (untie(%hash)) {
8936: return 'ok';
8937: }
8938: }
8939: }
8940: return 'error';
8941: }
8942:
8943: # --------------------------------------------------------------- Verify a symb
8944:
8945: sub symbverify {
8946: my ($symb,$thisurl)=@_;
8947: my $thisfn=$thisurl;
8948: $thisfn=&declutter($thisfn);
8949: # direct jump to resource in page or to a sequence - will construct own symbs
8950: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
8951: # check URL part
8952: my ($map,$resid,$url)=&decode_symb($symb);
8953:
8954: unless ($url eq $thisfn) { return 0; }
8955:
8956: $symb=&symbclean($symb);
8957: $thisurl=&deversion($thisurl);
8958: $thisfn=&deversion($thisfn);
8959:
8960: my %bighash;
8961: my $okay=0;
8962:
8963: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8964: &GDBM_READER(),0640)) {
8965: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
8966: $thisurl =~ s/\?.+$//;
8967: }
8968: my $ids=$bighash{'ids_'.&clutter($thisurl)};
8969: unless ($ids) {
8970: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
8971: $ids=$bighash{$idkey};
8972: }
8973: if ($ids) {
8974: # ------------------------------------------------------------------- Has ID(s)
8975: foreach my $id (split(/\,/,$ids)) {
8976: my ($mapid,$resid)=split(/\./,$id);
8977: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
8978: $symb =~ s/\?.+$//;
8979: }
8980: if (
8981: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
8982: eq $symb) {
8983: if (($env{'request.role.adv'}) ||
8984: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
8985: ($thisurl eq '/adm/navmaps')) {
8986: $okay=1;
8987: }
8988: }
8989: }
8990: }
8991: untie(%bighash);
8992: }
8993: return $okay;
8994: }
8995:
8996: # --------------------------------------------------------------- Clean-up symb
8997:
8998: sub symbclean {
8999: my $symb=shift;
9000: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9001: # remove version from map
9002: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9003:
9004: # remove version from URL
9005: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9006:
9007: # remove wrapper
9008:
9009: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9010: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9011: return $symb;
9012: }
9013:
9014: # ---------------------------------------------- Split symb to find map and url
9015:
9016: sub encode_symb {
9017: my ($map,$resid,$url)=@_;
9018: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9019: }
9020:
9021: sub decode_symb {
9022: my $symb=shift;
9023: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9024: my ($map,$resid,$url)=split(/___/,$symb);
9025: return (&fixversion($map),$resid,&fixversion($url));
9026: }
9027:
9028: sub fixversion {
9029: my $fn=shift;
9030: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9031: my %bighash;
9032: my $uri=&clutter($fn);
9033: my $key=$env{'request.course.id'}.'_'.$uri;
9034: # is this cached?
9035: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9036: if (defined($cached)) { return $result; }
9037: # unfortunately not cached, or expired
9038: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9039: &GDBM_READER(),0640)) {
9040: if ($bighash{'version_'.$uri}) {
9041: my $version=$bighash{'version_'.$uri};
9042: unless (($version eq 'mostrecent') ||
9043: ($version==&getversion($uri))) {
9044: $uri=~s/\.(\w+)$/\.$version\.$1/;
9045: }
9046: }
9047: untie %bighash;
9048: }
9049: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9050: }
9051:
9052: sub deversion {
9053: my $url=shift;
9054: $url=~s/\.\d+\.(\w+)$/\.$1/;
9055: return $url;
9056: }
9057:
9058: # ------------------------------------------------------ Return symb list entry
9059:
9060: sub symbread {
9061: my ($thisfn,$donotrecurse)=@_;
9062: my $cache_str='request.symbread.cached.'.$thisfn;
9063: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9064: # no filename provided? try from environment
9065: unless ($thisfn) {
9066: if ($env{'request.symb'}) {
9067: return $env{$cache_str}=&symbclean($env{'request.symb'});
9068: }
9069: $thisfn=$env{'request.filename'};
9070: }
9071: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9072: # is that filename actually a symb? Verify, clean, and return
9073: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9074: if (&symbverify($thisfn,$1)) {
9075: return $env{$cache_str}=&symbclean($thisfn);
9076: }
9077: }
9078: $thisfn=declutter($thisfn);
9079: my %hash;
9080: my %bighash;
9081: my $syval='';
9082: if (($env{'request.course.fn'}) && ($thisfn)) {
9083: my $targetfn = $thisfn;
9084: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9085: $targetfn = 'adm/wrapper/'.$thisfn;
9086: }
9087: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9088: $targetfn=$1;
9089: }
9090: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9091: &GDBM_READER(),0640)) {
9092: $syval=$hash{$targetfn};
9093: untie(%hash);
9094: }
9095: # ---------------------------------------------------------- There was an entry
9096: if ($syval) {
9097: #unless ($syval=~/\_\d+$/) {
9098: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9099: #&appenv({'request.ambiguous' => $thisfn});
9100: #return $env{$cache_str}='';
9101: #}
9102: #$syval.=$1;
9103: #}
9104: } else {
9105: # ------------------------------------------------------- Was not in symb table
9106: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9107: &GDBM_READER(),0640)) {
9108: # ---------------------------------------------- Get ID(s) for current resource
9109: my $ids=$bighash{'ids_'.&clutter($thisfn)};
9110: unless ($ids) {
9111: $ids=$bighash{'ids_/'.$thisfn};
9112: }
9113: unless ($ids) {
9114: # alias?
9115: $ids=$bighash{'mapalias_'.$thisfn};
9116: }
9117: if ($ids) {
9118: # ------------------------------------------------------------------- Has ID(s)
9119: my @possibilities=split(/\,/,$ids);
9120: if ($#possibilities==0) {
9121: # ----------------------------------------------- There is only one possibility
9122: my ($mapid,$resid)=split(/\./,$ids);
9123: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9124: $resid,$thisfn);
9125: } elsif (!$donotrecurse) {
9126: # ------------------------------------------ There is more than one possibility
9127: my $realpossible=0;
9128: foreach my $id (@possibilities) {
9129: my $file=$bighash{'src_'.$id};
9130: if (&allowed('bre',$file)) {
9131: my ($mapid,$resid)=split(/\./,$id);
9132: if ($bighash{'map_type_'.$mapid} ne 'page') {
9133: $realpossible++;
9134: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9135: $resid,$thisfn);
9136: }
9137: }
9138: }
9139: if ($realpossible!=1) { $syval=''; }
9140: } else {
9141: $syval='';
9142: }
9143: }
9144: untie(%bighash)
9145: }
9146: }
9147: if ($syval) {
9148: return $env{$cache_str}=$syval;
9149: }
9150: }
9151: &appenv({'request.ambiguous' => $thisfn});
9152: return $env{$cache_str}='';
9153: }
9154:
9155: # ---------------------------------------------------------- Return random seed
9156:
9157: sub numval {
9158: my $txt=shift;
9159: $txt=~tr/A-J/0-9/;
9160: $txt=~tr/a-j/0-9/;
9161: $txt=~tr/K-T/0-9/;
9162: $txt=~tr/k-t/0-9/;
9163: $txt=~tr/U-Z/0-5/;
9164: $txt=~tr/u-z/0-5/;
9165: $txt=~s/\D//g;
9166: if ($_64bit) { if ($txt > 2**32) { return -1; } }
9167: return int($txt);
9168: }
9169:
9170: sub numval2 {
9171: my $txt=shift;
9172: $txt=~tr/A-J/0-9/;
9173: $txt=~tr/a-j/0-9/;
9174: $txt=~tr/K-T/0-9/;
9175: $txt=~tr/k-t/0-9/;
9176: $txt=~tr/U-Z/0-5/;
9177: $txt=~tr/u-z/0-5/;
9178: $txt=~s/\D//g;
9179: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9180: my $total;
9181: foreach my $val (@txts) { $total+=$val; }
9182: if ($_64bit) { if ($total > 2**32) { return -1; } }
9183: return int($total);
9184: }
9185:
9186: sub numval3 {
9187: use integer;
9188: my $txt=shift;
9189: $txt=~tr/A-J/0-9/;
9190: $txt=~tr/a-j/0-9/;
9191: $txt=~tr/K-T/0-9/;
9192: $txt=~tr/k-t/0-9/;
9193: $txt=~tr/U-Z/0-5/;
9194: $txt=~tr/u-z/0-5/;
9195: $txt=~s/\D//g;
9196: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9197: my $total;
9198: foreach my $val (@txts) { $total+=$val; }
9199: if ($_64bit) { $total=(($total<<32)>>32); }
9200: return $total;
9201: }
9202:
9203: sub digest {
9204: my ($data)=@_;
9205: my $digest=&Digest::MD5::md5($data);
9206: my ($a,$b,$c,$d)=unpack("iiii",$digest);
9207: my ($e,$f);
9208: {
9209: use integer;
9210: $e=($a+$b);
9211: $f=($c+$d);
9212: if ($_64bit) {
9213: $e=(($e<<32)>>32);
9214: $f=(($f<<32)>>32);
9215: }
9216: }
9217: if (wantarray) {
9218: return ($e,$f);
9219: } else {
9220: my $g;
9221: {
9222: use integer;
9223: $g=($e+$f);
9224: if ($_64bit) {
9225: $g=(($g<<32)>>32);
9226: }
9227: }
9228: return $g;
9229: }
9230: }
9231:
9232: sub latest_rnd_algorithm_id {
9233: return '64bit5';
9234: }
9235:
9236: sub get_rand_alg {
9237: my ($courseid)=@_;
9238: if (!$courseid) { $courseid=(&whichuser())[1]; }
9239: if ($courseid) {
9240: return $env{"course.$courseid.rndseed"};
9241: }
9242: return &latest_rnd_algorithm_id();
9243: }
9244:
9245: sub validCODE {
9246: my ($CODE)=@_;
9247: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
9248: return 0;
9249: }
9250:
9251: sub getCODE {
9252: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
9253: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
9254: defined($Apache::lonhomework::parsing_a_task) ) &&
9255: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
9256: return $Apache::lonhomework::history{'resource.CODE'};
9257: }
9258: return undef;
9259: }
9260:
9261: sub rndseed {
9262: my ($symb,$courseid,$domain,$username)=@_;
9263: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
9264: if (!defined($symb)) {
9265: unless ($symb=$wsymb) { return time; }
9266: }
9267: if (!$courseid) { $courseid=$wcourseid; }
9268: if (!$domain) { $domain=$wdomain; }
9269: if (!$username) { $username=$wusername }
9270: my $which=&get_rand_alg();
9271:
9272: if (defined(&getCODE())) {
9273: if ($which eq '64bit5') {
9274: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
9275: } elsif ($which eq '64bit4') {
9276: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
9277: } else {
9278: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
9279: }
9280: } elsif ($which eq '64bit5') {
9281: return &rndseed_64bit5($symb,$courseid,$domain,$username);
9282: } elsif ($which eq '64bit4') {
9283: return &rndseed_64bit4($symb,$courseid,$domain,$username);
9284: } elsif ($which eq '64bit3') {
9285: return &rndseed_64bit3($symb,$courseid,$domain,$username);
9286: } elsif ($which eq '64bit2') {
9287: return &rndseed_64bit2($symb,$courseid,$domain,$username);
9288: } elsif ($which eq '64bit') {
9289: return &rndseed_64bit($symb,$courseid,$domain,$username);
9290: }
9291: return &rndseed_32bit($symb,$courseid,$domain,$username);
9292: }
9293:
9294: sub rndseed_32bit {
9295: my ($symb,$courseid,$domain,$username)=@_;
9296: {
9297: use integer;
9298: my $symbchck=unpack("%32C*",$symb) << 27;
9299: my $symbseed=numval($symb) << 22;
9300: my $namechck=unpack("%32C*",$username) << 17;
9301: my $nameseed=numval($username) << 12;
9302: my $domainseed=unpack("%32C*",$domain) << 7;
9303: my $courseseed=unpack("%32C*",$courseid);
9304: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
9305: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9306: #&logthis("rndseed :$num:$symb");
9307: if ($_64bit) { $num=(($num<<32)>>32); }
9308: return $num;
9309: }
9310: }
9311:
9312: sub rndseed_64bit {
9313: my ($symb,$courseid,$domain,$username)=@_;
9314: {
9315: use integer;
9316: my $symbchck=unpack("%32S*",$symb) << 21;
9317: my $symbseed=numval($symb) << 10;
9318: my $namechck=unpack("%32S*",$username);
9319:
9320: my $nameseed=numval($username) << 21;
9321: my $domainseed=unpack("%32S*",$domain) << 10;
9322: my $courseseed=unpack("%32S*",$courseid);
9323:
9324: my $num1=$symbchck+$symbseed+$namechck;
9325: my $num2=$nameseed+$domainseed+$courseseed;
9326: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9327: #&logthis("rndseed :$num:$symb");
9328: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9329: return "$num1,$num2";
9330: }
9331: }
9332:
9333: sub rndseed_64bit2 {
9334: my ($symb,$courseid,$domain,$username)=@_;
9335: {
9336: use integer;
9337: # strings need to be an even # of cahracters long, it it is odd the
9338: # last characters gets thrown away
9339: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9340: my $symbseed=numval($symb) << 10;
9341: my $namechck=unpack("%32S*",$username.' ');
9342:
9343: my $nameseed=numval($username) << 21;
9344: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9345: my $courseseed=unpack("%32S*",$courseid.' ');
9346:
9347: my $num1=$symbchck+$symbseed+$namechck;
9348: my $num2=$nameseed+$domainseed+$courseseed;
9349: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9350: #&logthis("rndseed :$num:$symb");
9351: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9352: return "$num1,$num2";
9353: }
9354: }
9355:
9356: sub rndseed_64bit3 {
9357: my ($symb,$courseid,$domain,$username)=@_;
9358: {
9359: use integer;
9360: # strings need to be an even # of cahracters long, it it is odd the
9361: # last characters gets thrown away
9362: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9363: my $symbseed=numval2($symb) << 10;
9364: my $namechck=unpack("%32S*",$username.' ');
9365:
9366: my $nameseed=numval2($username) << 21;
9367: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9368: my $courseseed=unpack("%32S*",$courseid.' ');
9369:
9370: my $num1=$symbchck+$symbseed+$namechck;
9371: my $num2=$nameseed+$domainseed+$courseseed;
9372: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9373: #&logthis("rndseed :$num1:$num2:$_64bit");
9374: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9375:
9376: return "$num1:$num2";
9377: }
9378: }
9379:
9380: sub rndseed_64bit4 {
9381: my ($symb,$courseid,$domain,$username)=@_;
9382: {
9383: use integer;
9384: # strings need to be an even # of cahracters long, it it is odd the
9385: # last characters gets thrown away
9386: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9387: my $symbseed=numval3($symb) << 10;
9388: my $namechck=unpack("%32S*",$username.' ');
9389:
9390: my $nameseed=numval3($username) << 21;
9391: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9392: my $courseseed=unpack("%32S*",$courseid.' ');
9393:
9394: my $num1=$symbchck+$symbseed+$namechck;
9395: my $num2=$nameseed+$domainseed+$courseseed;
9396: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9397: #&logthis("rndseed :$num1:$num2:$_64bit");
9398: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9399:
9400: return "$num1:$num2";
9401: }
9402: }
9403:
9404: sub rndseed_64bit5 {
9405: my ($symb,$courseid,$domain,$username)=@_;
9406: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
9407: return "$num1:$num2";
9408: }
9409:
9410: sub rndseed_CODE_64bit {
9411: my ($symb,$courseid,$domain,$username)=@_;
9412: {
9413: use integer;
9414: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9415: my $symbseed=numval2($symb);
9416: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9417: my $CODEseed=numval(&getCODE());
9418: my $courseseed=unpack("%32S*",$courseid.' ');
9419: my $num1=$symbseed+$CODEchck;
9420: my $num2=$CODEseed+$courseseed+$symbchck;
9421: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9422: #&logthis("rndseed :$num1:$num2:$symb");
9423: if ($_64bit) { $num1=(($num1<<32)>>32); }
9424: if ($_64bit) { $num2=(($num2<<32)>>32); }
9425: return "$num1:$num2";
9426: }
9427: }
9428:
9429: sub rndseed_CODE_64bit4 {
9430: my ($symb,$courseid,$domain,$username)=@_;
9431: {
9432: use integer;
9433: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9434: my $symbseed=numval3($symb);
9435: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9436: my $CODEseed=numval3(&getCODE());
9437: my $courseseed=unpack("%32S*",$courseid.' ');
9438: my $num1=$symbseed+$CODEchck;
9439: my $num2=$CODEseed+$courseseed+$symbchck;
9440: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9441: #&logthis("rndseed :$num1:$num2:$symb");
9442: if ($_64bit) { $num1=(($num1<<32)>>32); }
9443: if ($_64bit) { $num2=(($num2<<32)>>32); }
9444: return "$num1:$num2";
9445: }
9446: }
9447:
9448: sub rndseed_CODE_64bit5 {
9449: my ($symb,$courseid,$domain,$username)=@_;
9450: my $code = &getCODE();
9451: my ($num1,$num2)=&digest("$symb,$courseid,$code");
9452: return "$num1:$num2";
9453: }
9454:
9455: sub setup_random_from_rndseed {
9456: my ($rndseed)=@_;
9457: if ($rndseed =~/([,:])/) {
9458: my ($num1,$num2)=split(/[,:]/,$rndseed);
9459: &Math::Random::random_set_seed(abs($num1),abs($num2));
9460: } else {
9461: &Math::Random::random_set_seed_from_phrase($rndseed);
9462: }
9463: }
9464:
9465: sub latest_receipt_algorithm_id {
9466: return 'receipt3';
9467: }
9468:
9469: sub recunique {
9470: my $fucourseid=shift;
9471: my $unique;
9472: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
9473: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9474: $unique=$env{"course.$fucourseid.internal.encseed"};
9475: } else {
9476: $unique=$perlvar{'lonReceipt'};
9477: }
9478: return unpack("%32C*",$unique);
9479: }
9480:
9481: sub recprefix {
9482: my $fucourseid=shift;
9483: my $prefix;
9484: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
9485: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9486: $prefix=$env{"course.$fucourseid.internal.encpref"};
9487: } else {
9488: $prefix=$perlvar{'lonHostID'};
9489: }
9490: return unpack("%32C*",$prefix);
9491: }
9492:
9493: sub ireceipt {
9494: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
9495:
9496: my $return =&recprefix($fucourseid).'-';
9497:
9498: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
9499: $env{'request.state'} eq 'construct') {
9500: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
9501: return $return;
9502: }
9503:
9504: my $cuname=unpack("%32C*",$funame);
9505: my $cudom=unpack("%32C*",$fudom);
9506: my $cucourseid=unpack("%32C*",$fucourseid);
9507: my $cusymb=unpack("%32C*",$fusymb);
9508: my $cunique=&recunique($fucourseid);
9509: my $cpart=unpack("%32S*",$part);
9510: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
9511:
9512: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
9513:
9514: $return.= ($cunique%$cuname+
9515: $cunique%$cudom+
9516: $cusymb%$cuname+
9517: $cusymb%$cudom+
9518: $cucourseid%$cuname+
9519: $cucourseid%$cudom+
9520: $cpart%$cuname+
9521: $cpart%$cudom);
9522: } else {
9523: $return.= ($cunique%$cuname+
9524: $cunique%$cudom+
9525: $cusymb%$cuname+
9526: $cusymb%$cudom+
9527: $cucourseid%$cuname+
9528: $cucourseid%$cudom);
9529: }
9530: return $return;
9531: }
9532:
9533: sub receipt {
9534: my ($part)=@_;
9535: my ($symb,$courseid,$domain,$name) = &whichuser();
9536: return &ireceipt($name,$domain,$courseid,$symb,$part);
9537: }
9538:
9539: sub whichuser {
9540: my ($passedsymb)=@_;
9541: my ($symb,$courseid,$domain,$name,$publicuser);
9542: if (defined($env{'form.grade_symb'})) {
9543: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
9544: my $allowed=&allowed('vgr',$tmp_courseid);
9545: if (!$allowed &&
9546: exists($env{'request.course.sec'}) &&
9547: $env{'request.course.sec'} !~ /^\s*$/) {
9548: $allowed=&allowed('vgr',$tmp_courseid.
9549: '/'.$env{'request.course.sec'});
9550: }
9551: if ($allowed) {
9552: ($symb)=&get_env_multiple('form.grade_symb');
9553: $courseid=$tmp_courseid;
9554: ($domain)=&get_env_multiple('form.grade_domain');
9555: ($name)=&get_env_multiple('form.grade_username');
9556: return ($symb,$courseid,$domain,$name,$publicuser);
9557: }
9558: }
9559: if (!$passedsymb) {
9560: $symb=&symbread();
9561: } else {
9562: $symb=$passedsymb;
9563: }
9564: $courseid=$env{'request.course.id'};
9565: $domain=$env{'user.domain'};
9566: $name=$env{'user.name'};
9567: if ($name eq 'public' && $domain eq 'public') {
9568: if (!defined($env{'form.username'})) {
9569: $env{'form.username'}.=time.rand(10000000);
9570: }
9571: $name.=$env{'form.username'};
9572: }
9573: return ($symb,$courseid,$domain,$name,$publicuser);
9574:
9575: }
9576:
9577: # ------------------------------------------------------------ Serves up a file
9578: # returns either the contents of the file or
9579: # -1 if the file doesn't exist
9580: #
9581: # if the target is a file that was uploaded via DOCS,
9582: # a check will be made to see if a current copy exists on the local server,
9583: # if it does this will be served, otherwise a copy will be retrieved from
9584: # the home server for the course and stored in /home/httpd/html/userfiles on
9585: # the local server.
9586:
9587: sub getfile {
9588: my ($file) = @_;
9589: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9590: &repcopy($file);
9591: return &readfile($file);
9592: }
9593:
9594: sub repcopy_userfile {
9595: my ($file)=@_;
9596: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9597: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
9598: my ($cdom,$cnum,$filename) =
9599: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
9600: my $uri="/uploaded/$cdom/$cnum/$filename";
9601: if (-e "$file") {
9602: # we already have a local copy, check it out
9603: my @fileinfo = stat($file);
9604: my $rtncode;
9605: my $info;
9606: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
9607: if ($lwpresp ne 'ok') {
9608: # there is no such file anymore, even though we had a local copy
9609: if ($rtncode eq '404') {
9610: unlink($file);
9611: }
9612: return -1;
9613: }
9614: if ($info < $fileinfo[9]) {
9615: # nice, the file we have is up-to-date, just say okay
9616: return 'ok';
9617: } else {
9618: # the file is outdated, get rid of it
9619: unlink($file);
9620: }
9621: }
9622: # one way or the other, at this point, we don't have the file
9623: # construct the correct path for the file
9624: my @parts = ($cdom,$cnum);
9625: if ($filename =~ m|^(.+)/[^/]+$|) {
9626: push @parts, split(/\//,$1);
9627: }
9628: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9629: foreach my $part (@parts) {
9630: $path .= '/'.$part;
9631: if (!-e $path) {
9632: mkdir($path,0770);
9633: }
9634: }
9635: # now the path exists for sure
9636: # get a user agent
9637: my $ua=new LWP::UserAgent;
9638: my $transferfile=$file.'.in.transfer';
9639: # FIXME: this should flock
9640: if (-e $transferfile) { return 'ok'; }
9641: my $request;
9642: $uri=~s/^\///;
9643: my $homeserver = &homeserver($cnum,$cdom);
9644: my $protocol = $protocol{$homeserver};
9645: $protocol = 'http' if ($protocol ne 'https');
9646: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9647: my $response=$ua->request($request,$transferfile);
9648: # did it work?
9649: if ($response->is_error()) {
9650: unlink($transferfile);
9651: &logthis("Userfile repcopy failed for $uri");
9652: return -1;
9653: }
9654: # worked, rename the transfer file
9655: rename($transferfile,$file);
9656: return 'ok';
9657: }
9658:
9659: sub tokenwrapper {
9660: my $uri=shift;
9661: $uri=~s|^https?\://([^/]+)||;
9662: $uri=~s|^/||;
9663: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9664: my $token=$1;
9665: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9666: if ($udom && $uname && $file) {
9667: $file=~s|(\?\.*)*$||;
9668: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9669: my $homeserver = &homeserver($uname,$udom);
9670: my $protocol = $protocol{$homeserver};
9671: $protocol = 'http' if ($protocol ne 'https');
9672: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9673: (($uri=~/\?/)?'&':'?').'token='.$token.
9674: '&tokenissued='.$perlvar{'lonHostID'};
9675: } else {
9676: return '/adm/notfound.html';
9677: }
9678: }
9679:
9680: # call with reqtype HEAD: get last modification time
9681: # call with reqtype GET: get the file contents
9682: # Do not call this with reqtype GET for large files! It loads everything into memory
9683: #
9684: sub getuploaded {
9685: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9686: $uri=~s/^\///;
9687: my $homeserver = &homeserver($cnum,$cdom);
9688: my $protocol = $protocol{$homeserver};
9689: $protocol = 'http' if ($protocol ne 'https');
9690: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9691: my $ua=new LWP::UserAgent;
9692: my $request=new HTTP::Request($reqtype,$uri);
9693: my $response=$ua->request($request);
9694: $$rtncode = $response->code;
9695: if (! $response->is_success()) {
9696: return 'failed';
9697: }
9698: if ($reqtype eq 'HEAD') {
9699: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9700: } elsif ($reqtype eq 'GET') {
9701: $$info = $response->content;
9702: }
9703: return 'ok';
9704: }
9705:
9706: sub readfile {
9707: my $file = shift;
9708: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9709: my $fh;
9710: open($fh,"<$file");
9711: my $a='';
9712: while (my $line = <$fh>) { $a .= $line; }
9713: return $a;
9714: }
9715:
9716: sub filelocation {
9717: my ($dir,$file) = @_;
9718: my $location;
9719: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9720:
9721: if ($file =~ m-^/adm/-) {
9722: $file=~s-^/adm/wrapper/-/-;
9723: $file=~s-^/adm/coursedocs/showdoc/-/-;
9724: }
9725:
9726: if ($file=~m:^/~:) { # is a contruction space reference
9727: $location = $file;
9728: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9729: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9730: # is a correct contruction space reference
9731: $location = $file;
9732: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9733: $location = $file;
9734: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9735: my ($udom,$uname,$filename)=
9736: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9737: my $home=&homeserver($uname,$udom);
9738: my $is_me=0;
9739: my @ids=¤t_machine_ids();
9740: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9741: if ($is_me) {
9742: $location=&propath($udom,$uname).'/userfiles/'.$filename;
9743: } else {
9744: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9745: $udom.'/'.$uname.'/'.$filename;
9746: }
9747: } elsif ($file =~ m-^/adm/-) {
9748: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9749: } else {
9750: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9751: $file=~s:^/res/:/:;
9752: if ( !( $file =~ m:^/:) ) {
9753: $location = $dir. '/'.$file;
9754: } else {
9755: $location = '/home/httpd/html/res'.$file;
9756: }
9757: }
9758: $location=~s://+:/:g; # remove duplicate /
9759: while ($location=~m{/\.\./}) {
9760: if ($location =~ m{/[^/]+/\.\./}) {
9761: $location=~ s{/[^/]+/\.\./}{/}g;
9762: } else {
9763: $location=~ s{/\.\./}{/}g;
9764: }
9765: } #remove dir/..
9766: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9767: return $location;
9768: }
9769:
9770: sub hreflocation {
9771: my ($dir,$file)=@_;
9772: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9773: $file=filelocation($dir,$file);
9774: } elsif ($file=~m-^/adm/-) {
9775: $file=~s-^/adm/wrapper/-/-;
9776: $file=~s-^/adm/coursedocs/showdoc/-/-;
9777: }
9778: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9779: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9780: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9781: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9782: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9783: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9784: -/uploaded/$1/$2/-x;
9785: }
9786: if ($file=~ m{^/userfiles/}) {
9787: $file =~ s{^/userfiles/}{/uploaded/};
9788: }
9789: return $file;
9790: }
9791:
9792: sub current_machine_domains {
9793: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9794: }
9795:
9796: sub machine_domains {
9797: my ($hostname) = @_;
9798: my @domains;
9799: my %hostname = &all_hostnames();
9800: while( my($id, $name) = each(%hostname)) {
9801: # &logthis("-$id-$name-$hostname-");
9802: if ($hostname eq $name) {
9803: push(@domains,&host_domain($id));
9804: }
9805: }
9806: return @domains;
9807: }
9808:
9809: sub current_machine_ids {
9810: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9811: }
9812:
9813: sub machine_ids {
9814: my ($hostname) = @_;
9815: $hostname ||= &hostname($perlvar{'lonHostID'});
9816: my @ids;
9817: my %name_to_host = &all_names();
9818: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9819: return @{ $name_to_host{$hostname} };
9820: }
9821: return;
9822: }
9823:
9824: sub additional_machine_domains {
9825: my @domains;
9826: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9827: while( my $line = <$fh>) {
9828: $line =~ s/\s//g;
9829: push(@domains,$line);
9830: }
9831: return @domains;
9832: }
9833:
9834: sub default_login_domain {
9835: my $domain = $perlvar{'lonDefDomain'};
9836: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9837: foreach my $posdom (¤t_machine_domains(),
9838: &additional_machine_domains()) {
9839: if (lc($posdom) eq lc($testdomain)) {
9840: $domain=$posdom;
9841: last;
9842: }
9843: }
9844: return $domain;
9845: }
9846:
9847: # ------------------------------------------------------------- Declutters URLs
9848:
9849: sub declutter {
9850: my $thisfn=shift;
9851: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9852: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9853: $thisfn=~s/^\///;
9854: $thisfn=~s|^adm/wrapper/||;
9855: $thisfn=~s|^adm/coursedocs/showdoc/||;
9856: $thisfn=~s/^res\///;
9857: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
9858: $thisfn=~s/\?.+$//;
9859: }
9860: return $thisfn;
9861: }
9862:
9863: # ------------------------------------------------------------- Clutter up URLs
9864:
9865: sub clutter {
9866: my $thisfn='/'.&declutter(shift);
9867: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9868: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9869: $thisfn='/res'.$thisfn;
9870: }
9871: if ($thisfn !~m|^/adm|) {
9872: if ($thisfn =~ m|^/ext/|) {
9873: $thisfn='/adm/wrapper'.$thisfn;
9874: } else {
9875: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9876: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9877: if ($embstyle eq 'ssi'
9878: || ($embstyle eq 'hdn')
9879: || ($embstyle eq 'rat')
9880: || ($embstyle eq 'prv')
9881: || ($embstyle eq 'ign')) {
9882: #do nothing with these
9883: } elsif (($embstyle eq 'img')
9884: || ($embstyle eq 'emb')
9885: || ($embstyle eq 'wrp')) {
9886: $thisfn='/adm/wrapper'.$thisfn;
9887: } elsif ($embstyle eq 'unk'
9888: && $thisfn!~/\.(sequence|page)$/) {
9889: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9890: } else {
9891: # &logthis("Got a blank emb style");
9892: }
9893: }
9894: }
9895: return $thisfn;
9896: }
9897:
9898: sub clutter_with_no_wrapper {
9899: my $uri = &clutter(shift);
9900: if ($uri =~ m-^/adm/-) {
9901: $uri =~ s-^/adm/wrapper/-/-;
9902: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9903: }
9904: return $uri;
9905: }
9906:
9907: sub freeze_escape {
9908: my ($value)=@_;
9909: if (ref($value)) {
9910: $value=&nfreeze($value);
9911: return '__FROZEN__'.&escape($value);
9912: }
9913: return &escape($value);
9914: }
9915:
9916:
9917: sub thaw_unescape {
9918: my ($value)=@_;
9919: if ($value =~ /^__FROZEN__/) {
9920: substr($value,0,10,undef);
9921: $value=&unescape($value);
9922: return &thaw($value);
9923: }
9924: return &unescape($value);
9925: }
9926:
9927: sub correct_line_ends {
9928: my ($result)=@_;
9929: $$result =~s/\r\n/\n/mg;
9930: $$result =~s/\r/\n/mg;
9931: }
9932: # ================================================================ Main Program
9933:
9934: sub goodbye {
9935: &logthis("Starting Shut down");
9936: #not converted to using infrastruture and probably shouldn't be
9937: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9938: #converted
9939: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9940: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9941: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9942: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
9943: #1.1 only
9944: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
9945: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
9946: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
9947: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
9948: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
9949: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
9950: &logthis(sprintf("%-20s is %s",'hits',$hits));
9951: &flushcourselogs();
9952: &logthis("Shutting down");
9953: }
9954:
9955: sub get_dns {
9956: my ($url,$func,$ignore_cache) = @_;
9957: if (!$ignore_cache) {
9958: my ($content,$cached)=
9959: &Apache::lonnet::is_cached_new('dns',$url);
9960: if ($cached) {
9961: &$func($content);
9962: return;
9963: }
9964: }
9965:
9966: my %alldns;
9967: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9968: foreach my $dns (<$config>) {
9969: next if ($dns !~ /^\^(\S*)/x);
9970: my $line = $1;
9971: my ($host,$protocol) = split(/:/,$line);
9972: if ($protocol ne 'https') {
9973: $protocol = 'http';
9974: }
9975: $alldns{$host} = $protocol;
9976: }
9977: while (%alldns) {
9978: my ($dns) = keys(%alldns);
9979: my $ua=new LWP::UserAgent;
9980: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
9981: my $response=$ua->request($request);
9982: delete($alldns{$dns});
9983: next if ($response->is_error());
9984: my @content = split("\n",$response->content);
9985: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
9986: &$func(\@content);
9987: return;
9988: }
9989: close($config);
9990: my $which = (split('/',$url))[3];
9991: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
9992: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
9993: my @content = <$config>;
9994: &$func(\@content);
9995: return;
9996: }
9997: # ------------------------------------------------------------ Read domain file
9998: {
9999: my $loaded;
10000: my %domain;
10001:
10002: sub parse_domain_tab {
10003: my ($lines) = @_;
10004: foreach my $line (@$lines) {
10005: next if ($line =~ /^(\#|\s*$ )/x);
10006:
10007: chomp($line);
10008: my ($name,@elements) = split(/:/,$line,9);
10009: my %this_domain;
10010: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10011: 'lang_def', 'city', 'longi', 'lati',
10012: 'primary') {
10013: $this_domain{$field} = shift(@elements);
10014: }
10015: $domain{$name} = \%this_domain;
10016: }
10017: }
10018:
10019: sub reset_domain_info {
10020: undef($loaded);
10021: undef(%domain);
10022: }
10023:
10024: sub load_domain_tab {
10025: my ($ignore_cache) = @_;
10026: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10027: my $fh;
10028: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10029: my @lines = <$fh>;
10030: &parse_domain_tab(\@lines);
10031: }
10032: close($fh);
10033: $loaded = 1;
10034: }
10035:
10036: sub domain {
10037: &load_domain_tab() if (!$loaded);
10038:
10039: my ($name,$what) = @_;
10040: return if ( !exists($domain{$name}) );
10041:
10042: if (!$what) {
10043: return $domain{$name}{'description'};
10044: }
10045: return $domain{$name}{$what};
10046: }
10047:
10048: sub domain_info {
10049: &load_domain_tab() if (!$loaded);
10050: return %domain;
10051: }
10052:
10053: }
10054:
10055:
10056: # ------------------------------------------------------------- Read hosts file
10057: {
10058: my %hostname;
10059: my %hostdom;
10060: my %libserv;
10061: my $loaded;
10062: my %name_to_host;
10063: my %internetdom;
10064:
10065: sub parse_hosts_tab {
10066: my ($file) = @_;
10067: foreach my $configline (@$file) {
10068: next if ($configline =~ /^(\#|\s*$ )/x);
10069: next if ($configline =~ /^\^/);
10070: chomp($configline);
10071: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10072: $name=~s/\s//g;
10073: if ($id && $domain && $role && $name) {
10074: $hostname{$id}=$name;
10075: push(@{$name_to_host{$name}}, $id);
10076: $hostdom{$id}=$domain;
10077: if ($role eq 'library') { $libserv{$id}=$name; }
10078: if (defined($protocol)) {
10079: if ($protocol eq 'https') {
10080: $protocol{$id} = $protocol;
10081: } else {
10082: $protocol{$id} = 'http';
10083: }
10084: } else {
10085: $protocol{$id} = 'http';
10086: }
10087: if (defined($intdom)) {
10088: $internetdom{$id} = $intdom;
10089: }
10090: }
10091: }
10092: }
10093:
10094: sub reset_hosts_info {
10095: &purge_remembered();
10096: &reset_domain_info();
10097: &reset_hosts_ip_info();
10098: undef(%name_to_host);
10099: undef(%hostname);
10100: undef(%hostdom);
10101: undef(%libserv);
10102: undef($loaded);
10103: }
10104:
10105: sub load_hosts_tab {
10106: my ($ignore_cache) = @_;
10107: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
10108: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10109: my @config = <$config>;
10110: &parse_hosts_tab(\@config);
10111: close($config);
10112: $loaded=1;
10113: }
10114:
10115: sub hostname {
10116: &load_hosts_tab() if (!$loaded);
10117:
10118: my ($lonid) = @_;
10119: return $hostname{$lonid};
10120: }
10121:
10122: sub all_hostnames {
10123: &load_hosts_tab() if (!$loaded);
10124:
10125: return %hostname;
10126: }
10127:
10128: sub all_names {
10129: &load_hosts_tab() if (!$loaded);
10130:
10131: return %name_to_host;
10132: }
10133:
10134: sub all_host_domain {
10135: &load_hosts_tab() if (!$loaded);
10136: return %hostdom;
10137: }
10138:
10139: sub is_library {
10140: &load_hosts_tab() if (!$loaded);
10141:
10142: return exists($libserv{$_[0]});
10143: }
10144:
10145: sub all_library {
10146: &load_hosts_tab() if (!$loaded);
10147:
10148: return %libserv;
10149: }
10150:
10151: sub unique_library {
10152: #2x reverse removes all hostnames that appear more than once
10153: my %unique = reverse &all_library();
10154: return reverse %unique;
10155: }
10156:
10157: sub get_servers {
10158: &load_hosts_tab() if (!$loaded);
10159:
10160: my ($domain,$type) = @_;
10161: my %possible_hosts = ($type eq 'library') ? %libserv
10162: : %hostname;
10163: my %result;
10164: if (ref($domain) eq 'ARRAY') {
10165: while ( my ($host,$hostname) = each(%possible_hosts)) {
10166: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
10167: $result{$host} = $hostname;
10168: }
10169: }
10170: } else {
10171: while ( my ($host,$hostname) = each(%possible_hosts)) {
10172: if ($hostdom{$host} eq $domain) {
10173: $result{$host} = $hostname;
10174: }
10175: }
10176: }
10177: return %result;
10178: }
10179:
10180: sub get_unique_servers {
10181: my %unique = reverse &get_servers(@_);
10182: return reverse %unique;
10183: }
10184:
10185: sub host_domain {
10186: &load_hosts_tab() if (!$loaded);
10187:
10188: my ($lonid) = @_;
10189: return $hostdom{$lonid};
10190: }
10191:
10192: sub all_domains {
10193: &load_hosts_tab() if (!$loaded);
10194:
10195: my %seen;
10196: my @uniq = grep(!$seen{$_}++, values(%hostdom));
10197: return @uniq;
10198: }
10199:
10200: sub internet_dom {
10201: &load_hosts_tab() if (!$loaded);
10202:
10203: my ($lonid) = @_;
10204: return $internetdom{$lonid};
10205: }
10206: }
10207:
10208: {
10209: my %iphost;
10210: my %name_to_ip;
10211: my %lonid_to_ip;
10212:
10213: sub get_hosts_from_ip {
10214: my ($ip) = @_;
10215: my %iphosts = &get_iphost();
10216: if (ref($iphosts{$ip})) {
10217: return @{$iphosts{$ip}};
10218: }
10219: return;
10220: }
10221:
10222: sub reset_hosts_ip_info {
10223: undef(%iphost);
10224: undef(%name_to_ip);
10225: undef(%lonid_to_ip);
10226: }
10227:
10228: sub get_host_ip {
10229: my ($lonid) = @_;
10230: if (exists($lonid_to_ip{$lonid})) {
10231: return $lonid_to_ip{$lonid};
10232: }
10233: my $name=&hostname($lonid);
10234: my $ip = gethostbyname($name);
10235: return if (!$ip || length($ip) ne 4);
10236: $ip=inet_ntoa($ip);
10237: $name_to_ip{$name} = $ip;
10238: $lonid_to_ip{$lonid} = $ip;
10239: return $ip;
10240: }
10241:
10242: sub get_iphost {
10243: my ($ignore_cache) = @_;
10244:
10245: if (!$ignore_cache) {
10246: if (%iphost) {
10247: return %iphost;
10248: }
10249: my ($ip_info,$cached)=
10250: &Apache::lonnet::is_cached_new('iphost','iphost');
10251: if ($cached) {
10252: %iphost = %{$ip_info->[0]};
10253: %name_to_ip = %{$ip_info->[1]};
10254: %lonid_to_ip = %{$ip_info->[2]};
10255: return %iphost;
10256: }
10257: }
10258:
10259: # get yesterday's info for fallback
10260: my %old_name_to_ip;
10261: my ($ip_info,$cached)=
10262: &Apache::lonnet::is_cached_new('iphost','iphost');
10263: if ($cached) {
10264: %old_name_to_ip = %{$ip_info->[1]};
10265: }
10266:
10267: my %name_to_host = &all_names();
10268: foreach my $name (keys(%name_to_host)) {
10269: my $ip;
10270: if (!exists($name_to_ip{$name})) {
10271: $ip = gethostbyname($name);
10272: if (!$ip || length($ip) ne 4) {
10273: if (defined($old_name_to_ip{$name})) {
10274: $ip = $old_name_to_ip{$name};
10275: &logthis("Can't find $name defaulting to old $ip");
10276: } else {
10277: &logthis("Name $name no IP found");
10278: next;
10279: }
10280: } else {
10281: $ip=inet_ntoa($ip);
10282: }
10283: $name_to_ip{$name} = $ip;
10284: } else {
10285: $ip = $name_to_ip{$name};
10286: }
10287: foreach my $id (@{ $name_to_host{$name} }) {
10288: $lonid_to_ip{$id} = $ip;
10289: }
10290: push(@{$iphost{$ip}},@{$name_to_host{$name}});
10291: }
10292: &Apache::lonnet::do_cache_new('iphost','iphost',
10293: [\%iphost,\%name_to_ip,\%lonid_to_ip],
10294: 48*60*60);
10295:
10296: return %iphost;
10297: }
10298:
10299: #
10300: # Given a DNS returns the loncapa host name for that DNS
10301: #
10302: sub host_from_dns {
10303: my ($dns) = @_;
10304: my @hosts;
10305: my $ip;
10306:
10307: if (exists($name_to_ip{$dns})) {
10308: $ip = $name_to_ip{$dns};
10309: }
10310: if (!$ip) {
10311: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
10312: if (length($ip) == 4) {
10313: $ip = &IO::Socket::inet_ntoa($ip);
10314: }
10315: }
10316: if ($ip) {
10317: @hosts = get_hosts_from_ip($ip);
10318: return $hosts[0];
10319: }
10320: return undef;
10321: }
10322:
10323: sub get_internet_names {
10324: my ($lonid) = @_;
10325: return if ($lonid eq '');
10326: my ($idnref,$cached)=
10327: &Apache::lonnet::is_cached_new('internetnames',$lonid);
10328: if ($cached) {
10329: return $idnref;
10330: }
10331: my $ip = &get_host_ip($lonid);
10332: my @hosts = &get_hosts_from_ip($ip);
10333: my %iphost = &get_iphost();
10334: my (@idns,%seen);
10335: foreach my $id (@hosts) {
10336: my $dom = &host_domain($id);
10337: my $prim_id = &domain($dom,'primary');
10338: my $prim_ip = &get_host_ip($prim_id);
10339: next if ($seen{$prim_ip});
10340: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
10341: foreach my $id (@{$iphost{$prim_ip}}) {
10342: my $intdom = &internet_dom($id);
10343: unless (grep(/^\Q$intdom\E$/,@idns)) {
10344: push(@idns,$intdom);
10345: }
10346: }
10347: }
10348: $seen{$prim_ip} = 1;
10349: }
10350: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
10351: }
10352:
10353: }
10354:
10355: sub all_loncaparevs {
10356: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
10357: }
10358:
10359: BEGIN {
10360:
10361: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
10362: unless ($readit) {
10363: {
10364: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
10365: %perlvar = (%perlvar,%{$configvars});
10366: }
10367:
10368:
10369: # ------------------------------------------------------ Read spare server file
10370: {
10371: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
10372:
10373: while (my $configline=<$config>) {
10374: chomp($configline);
10375: if ($configline) {
10376: my ($host,$type) = split(':',$configline,2);
10377: if (!defined($type) || $type eq '') { $type = 'default' };
10378: push(@{ $spareid{$type} }, $host);
10379: }
10380: }
10381: close($config);
10382: }
10383: # ------------------------------------------------------------ Read permissions
10384: {
10385: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
10386:
10387: while (my $configline=<$config>) {
10388: chomp($configline);
10389: if ($configline) {
10390: my ($role,$perm)=split(/ /,$configline);
10391: if ($perm ne '') { $pr{$role}=$perm; }
10392: }
10393: }
10394: close($config);
10395: }
10396:
10397: # -------------------------------------------- Read plain texts for permissions
10398: {
10399: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
10400:
10401: while (my $configline=<$config>) {
10402: chomp($configline);
10403: if ($configline) {
10404: my ($short,@plain)=split(/:/,$configline);
10405: %{$prp{$short}} = ();
10406: if (@plain > 0) {
10407: $prp{$short}{'std'} = $plain[0];
10408: for (my $i=1; $i<@plain; $i++) {
10409: $prp{$short}{'alt'.$i} = $plain[$i];
10410: }
10411: }
10412: }
10413: }
10414: close($config);
10415: }
10416:
10417: # ---------------------------------------------------------- Read package table
10418: {
10419: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
10420:
10421: while (my $configline=<$config>) {
10422: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
10423: chomp($configline);
10424: my ($short,$plain)=split(/:/,$configline);
10425: my ($pack,$name)=split(/\&/,$short);
10426: if ($plain ne '') {
10427: $packagetab{$pack.'&'.$name.'&name'}=$name;
10428: $packagetab{$short}=$plain;
10429: }
10430: }
10431: close($config);
10432: }
10433:
10434: # ---------------------------------------------------------- Read loncaparev table
10435: {
10436: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
10437: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
10438: while (my $configline=<$config>) {
10439: chomp($configline);
10440: my ($hostid,$loncaparev)=split(/:/,$configline);
10441: $loncaparevs{$hostid}=$loncaparev;
10442: }
10443: close($config);
10444: }
10445: }
10446: }
10447:
10448: # ---------------------------------------------------------- Read serverhostID table
10449: {
10450: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
10451: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
10452: while (my $configline=<$config>) {
10453: chomp($configline);
10454: my ($name,$id)=split(/:/,$configline);
10455: $serverhomeIDs{$name}=$id;
10456: }
10457: close($config);
10458: }
10459: }
10460: }
10461:
10462: {
10463: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
10464: if (-e $file) {
10465: my $parser = HTML::LCParser->new($file);
10466: while (my $token = $parser->get_token()) {
10467: if ($token->[0] eq 'S') {
10468: my $item = $token->[1];
10469: my $name = $token->[2]{'name'};
10470: my $value = $token->[2]{'value'};
10471: if ($item ne '' && $name ne '' && $value ne '') {
10472: my $release = $parser->get_text();
10473: $release =~ s/(^\s*|\s*$ )//gx;
10474: $needsrelease{$item.':'.$name.':'.$value} = $release;
10475: }
10476: }
10477: }
10478: }
10479: }
10480:
10481: # ------------- set up temporary directory
10482: {
10483: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
10484:
10485: }
10486:
10487: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
10488: 'compress_threshold'=> 20_000,
10489: });
10490:
10491: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
10492: $dumpcount=0;
10493: $locknum=0;
10494:
10495: &logtouch();
10496: &logthis('<font color="yellow">INFO: Read configuration</font>');
10497: $readit=1;
10498: {
10499: use integer;
10500: my $test=(2**32)+1;
10501: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
10502: &logthis(" Detected 64bit platform ($_64bit)");
10503: }
10504: }
10505: }
10506:
10507: 1;
10508: __END__
10509:
10510: =pod
10511:
10512: =head1 NAME
10513:
10514: Apache::lonnet - Subroutines to ask questions about things in the network.
10515:
10516: =head1 SYNOPSIS
10517:
10518: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
10519:
10520: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
10521:
10522: Common parameters:
10523:
10524: =over 4
10525:
10526: =item *
10527:
10528: $uname : an internal username (if $cname expecting a course Id specifically)
10529:
10530: =item *
10531:
10532: $udom : a domain (if $cdom expecting a course's domain specifically)
10533:
10534: =item *
10535:
10536: $symb : a resource instance identifier
10537:
10538: =item *
10539:
10540: $namespace : the name of a .db file that contains the data needed or
10541: being set.
10542:
10543: =back
10544:
10545: =head1 OVERVIEW
10546:
10547: lonnet provides subroutines which interact with the
10548: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
10549: about classes, users, and resources.
10550:
10551: For many of these objects you can also use this to store data about
10552: them or modify them in various ways.
10553:
10554: =head2 Symbs
10555:
10556: To identify a specific instance of a resource, LON-CAPA uses symbols
10557: or "symbs"X<symb>. These identifiers are built from the URL of the
10558: map, the resource number of the resource in the map, and the URL of
10559: the resource itself. The latter is somewhat redundant, but might help
10560: if maps change.
10561:
10562: An example is
10563:
10564: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
10565:
10566: The respective map entry is
10567:
10568: <resource id="19" src="/res/msu/korte/tests/part12.problem"
10569: title="Problem 2">
10570: </resource>
10571:
10572: Symbs are used by the random number generator, as well as to store and
10573: restore data specific to a certain instance of for example a problem.
10574:
10575: =head2 Storing And Retrieving Data
10576:
10577: X<store()>X<cstore()>X<restore()>Three of the most important functions
10578: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
10579: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
10580: is is the non-critical message twin of cstore. These functions are for
10581: handlers to store a perl hash to a user's permanent data space in an
10582: easy manner, and to retrieve it again on another call. It is expected
10583: that a handler would use this once at the beginning to retrieve data,
10584: and then again once at the end to send only the new data back.
10585:
10586: The data is stored in the user's data directory on the user's
10587: homeserver under the ID of the course.
10588:
10589: The hash that is returned by restore will have all of the previous
10590: value for all of the elements of the hash.
10591:
10592: Example:
10593:
10594: #creating a hash
10595: my %hash;
10596: $hash{'foo'}='bar';
10597:
10598: #storing it
10599: &Apache::lonnet::cstore(\%hash);
10600:
10601: #changing a value
10602: $hash{'foo'}='notbar';
10603:
10604: #adding a new value
10605: $hash{'bar'}='foo';
10606: &Apache::lonnet::cstore(\%hash);
10607:
10608: #retrieving the hash
10609: my %history=&Apache::lonnet::restore();
10610:
10611: #print the hash
10612: foreach my $key (sort(keys(%history))) {
10613: print("\%history{$key} = $history{$key}");
10614: }
10615:
10616: Will print out:
10617:
10618: %history{1:foo} = bar
10619: %history{1:keys} = foo:timestamp
10620: %history{1:timestamp} = 990455579
10621: %history{2:bar} = foo
10622: %history{2:foo} = notbar
10623: %history{2:keys} = foo:bar:timestamp
10624: %history{2:timestamp} = 990455580
10625: %history{bar} = foo
10626: %history{foo} = notbar
10627: %history{timestamp} = 990455580
10628: %history{version} = 2
10629:
10630: Note that the special hash entries C<keys>, C<version> and
10631: C<timestamp> were added to the hash. C<version> will be equal to the
10632: total number of versions of the data that have been stored. The
10633: C<timestamp> attribute will be the UNIX time the hash was
10634: stored. C<keys> is available in every historical section to list which
10635: keys were added or changed at a specific historical revision of a
10636: hash.
10637:
10638: B<Warning>: do not store the hash that restore returns directly. This
10639: will cause a mess since it will restore the historical keys as if the
10640: were new keys. I.E. 1:foo will become 1:1:foo etc.
10641:
10642: Calling convention:
10643:
10644: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
10645: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
10646:
10647: For more detailed information, see lonnet specific documentation.
10648:
10649: =head1 RETURN MESSAGES
10650:
10651: =over 4
10652:
10653: =item * B<con_lost>: unable to contact remote host
10654:
10655: =item * B<con_delayed>: unable to contact remote host, message will be delivered
10656: when the connection is brought back up
10657:
10658: =item * B<con_failed>: unable to contact remote host and unable to save message
10659: for later delivery
10660:
10661: =item * B<error:>: an error a occurred, a description of the error follows the :
10662:
10663: =item * B<no_such_host>: unable to fund a host associated with the user/domain
10664: that was requested
10665:
10666: =back
10667:
10668: =head1 PUBLIC SUBROUTINES
10669:
10670: =head2 Session Environment Functions
10671:
10672: =over 4
10673:
10674: =item *
10675: X<appenv()>
10676: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
10677: the user envirnoment file, and will be restored for each access this
10678: user makes during this session, also modifies the %env for the current
10679: process. Optional rolesarrayref - if defined contains a reference to an array
10680: of roles which are exempt from the restriction on modifying user.role entries
10681: in the user's environment.db and in %env.
10682:
10683: =item *
10684: X<delenv()>
10685: B<delenv($delthis,$regexp)>: removes all items from the session
10686: environment file that begin with $delthis. If the
10687: optional second arg - $regexp - is true, $delthis is treated as a
10688: regular expression, otherwise \Q$delthis\E is used.
10689: The values are also deleted from the current processes %env.
10690:
10691: =item * get_env_multiple($name)
10692:
10693: gets $name from the %env hash, it seemlessly handles the cases where multiple
10694: values may be defined and end up as an array ref.
10695:
10696: returns an array of values
10697:
10698: =back
10699:
10700: =head2 User Information
10701:
10702: =over 4
10703:
10704: =item *
10705: X<queryauthenticate()>
10706: B<queryauthenticate($uname,$udom)>: try to determine user's current
10707: authentication scheme
10708:
10709: =item *
10710: X<authenticate()>
10711: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
10712: authenticate user from domain's lib servers (first use the current
10713: one). C<$upass> should be the users password.
10714: $checkdefauth is optional (value is 1 if a check should be made to
10715: authenticate user using default authentication method, and allow
10716: account creation if username does not have account in the domain).
10717: $clientcancheckhost is optional (value is 1 if checking whether the
10718: server can host will occur on the client side in lonauth.pm).
10719:
10720: =item *
10721: X<homeserver()>
10722: B<homeserver($uname,$udom)>: find the server which has
10723: the user's directory and files (there must be only one), this caches
10724: the answer, and also caches if there is a borken connection.
10725:
10726: =item *
10727: X<idget()>
10728: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10729: (IDs are a unique resource in a domain, there must be only 1 ID per
10730: username, and only 1 username per ID in a specific domain) (returns
10731: hash: id=>name,id=>name)
10732:
10733: =item *
10734: X<idrget()>
10735: B<idrget($udom,@unames)>: find the IDs behind a list of
10736: usernames (returns hash: name=>id,name=>id)
10737:
10738: =item *
10739: X<idput()>
10740: B<idput($udom,%ids)>: store away a list of names and associated IDs
10741:
10742: =item *
10743: X<rolesinit()>
10744: B<rolesinit($udom,$username,$authhost)>: get user privileges
10745:
10746: =item *
10747: X<getsection()>
10748: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10749: course $cname, return section name/number or '' for "not in course"
10750: and '-1' for "no section"
10751:
10752: =item *
10753: X<userenvironment()>
10754: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10755: passed in @what from the requested user's environment, returns a hash
10756:
10757: =item *
10758: X<userlog_query()>
10759: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10760: activity.log file. %filters defines filters applied when parsing the
10761: log file. These can be start or end timestamps, or the type of action
10762: - log to look for Login or Logout events, check for Checkin or
10763: Checkout, role for role selection. The response is in the form
10764: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10765: escaped strings of the action recorded in the activity.log file.
10766:
10767: =back
10768:
10769: =head2 User Roles
10770:
10771: =over 4
10772:
10773: =item *
10774:
10775: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
10776: F: full access
10777: U,I,K: authentication modes (cxx only)
10778: '': forbidden
10779: 1: user needs to choose course
10780: 2: browse allowed
10781: A: passphrase authentication needed
10782:
10783: =item *
10784:
10785: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
10786: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
10787: and course level
10788:
10789: =item *
10790:
10791: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
10792: (rolesplain.tab); plain text explanation of a user role term.
10793: $type is Course (default) or Community.
10794: If $forcedefault evaluates to true, text returned will be default
10795: text for $type. Otherwise, if this is a course, the text returned
10796: will be a custom name for the role (if defined in the course's
10797: environment). If no custom name is defined the default is returned.
10798:
10799: =item *
10800:
10801: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
10802: All arguments are optional. Returns a hash of a roles, either for
10803: co-author/assistant author roles for a user's Construction Space
10804: (default), or if $context is 'userroles', roles for the user himself,
10805: In the hash, keys are set to colon-separated $uname,$udom,$role, and
10806: (optionally) if $withsec is true, a fourth colon-separated item - $section.
10807: For each key, value is set to colon-separated start and end times for
10808: the role. If no username and domain are specified, will default to
10809: current user/domain. Types, roles, and roledoms are references to arrays
10810: of role statuses (active, future or previous), roles
10811: (e.g., cc,in, st etc.) and domains of the roles which can be used
10812: to restrict the list of roles reported. If no array ref is
10813: provided for types, will default to return only active roles.
10814:
10815: =back
10816:
10817: =head2 User Modification
10818:
10819: =over 4
10820:
10821: =item *
10822:
10823: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
10824: user for the level given by URL. Optional start and end dates (leave empty
10825: string or zero for "no date")
10826:
10827: =item *
10828:
10829: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
10830: change a users, password, possible return values are: ok,
10831: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
10832: refused
10833:
10834: =item *
10835:
10836: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
10837:
10838: =item *
10839:
10840: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
10841: $forceid,$desiredhome,$email,$inststatus,$candelete) :
10842:
10843: will update user information (firstname,middlename,lastname,generation,
10844: permanentemail), and if forceid is true, student/employee ID also.
10845: A user's institutional affiliation(s) can also be updated.
10846: User information fields will not be overwritten with empty entries
10847: unless the field is included in the $candelete array reference.
10848: This array is included when a single user is modified via "Manage Users",
10849: or when Autoupdate.pl is run by cron in a domain.
10850:
10851: =item *
10852:
10853: modifystudent
10854:
10855: modify a student's enrollment and identification information.
10856: The course id is resolved based on the current users environment.
10857: This means the envoking user must be a course coordinator or otherwise
10858: associated with a course.
10859:
10860: This call is essentially a wrapper for lonnet::modifyuser and
10861: lonnet::modify_student_enrollment
10862:
10863: Inputs:
10864:
10865: =over 4
10866:
10867: =item B<$udom> Student's loncapa domain
10868:
10869: =item B<$uname> Student's loncapa login name
10870:
10871: =item B<$uid> Student/Employee ID
10872:
10873: =item B<$umode> Student's authentication mode
10874:
10875: =item B<$upass> Student's password
10876:
10877: =item B<$first> Student's first name
10878:
10879: =item B<$middle> Student's middle name
10880:
10881: =item B<$last> Student's last name
10882:
10883: =item B<$gene> Student's generation
10884:
10885: =item B<$usec> Student's section in course
10886:
10887: =item B<$end> Unix time of the roles expiration
10888:
10889: =item B<$start> Unix time of the roles start date
10890:
10891: =item B<$forceid> If defined, allow $uid to be changed
10892:
10893: =item B<$desiredhome> server to use as home server for student
10894:
10895: =item B<$email> Student's permanent e-mail address
10896:
10897: =item B<$type> Type of enrollment (auto or manual)
10898:
10899: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
10900:
10901: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
10902:
10903: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
10904:
10905: =item B<$context> role change context (shown in User Management Logs display in a course)
10906:
10907: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10908:
10909: =back
10910:
10911: =item *
10912:
10913: modify_student_enrollment
10914:
10915: Change a students enrollment status in a class. The environment variable
10916: 'role.request.course' must be defined for this function to proceed.
10917:
10918: Inputs:
10919:
10920: =over 4
10921:
10922: =item $udom, students domain
10923:
10924: =item $uname, students name
10925:
10926: =item $uid, students user id
10927:
10928: =item $first, students first name
10929:
10930: =item $middle
10931:
10932: =item $last
10933:
10934: =item $gene
10935:
10936: =item $usec
10937:
10938: =item $end
10939:
10940: =item $start
10941:
10942: =item $type
10943:
10944: =item $locktype
10945:
10946: =item $cid
10947:
10948: =item $selfenroll
10949:
10950: =item $context
10951:
10952: =back
10953:
10954:
10955: =item *
10956:
10957: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
10958: custom role; give a custom role to a user for the level given by URL. Specify
10959: name and domain of role author, and role name
10960:
10961: =item *
10962:
10963: revokerole($udom,$uname,$url,$role) : revoke a role for url
10964:
10965: =item *
10966:
10967: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
10968:
10969: =back
10970:
10971: =head2 Course Infomation
10972:
10973: =over 4
10974:
10975: =item *
10976:
10977: coursedescription($courseid) : returns a hash of information about the
10978: specified course id, including all environment settings for the
10979: course, the description of the course will be in the hash under the
10980: key 'description'
10981:
10982: =item *
10983:
10984: resdata($name,$domain,$type,@which) : request for current parameter
10985: setting for a specific $type, where $type is either 'course' or 'user',
10986: @what should be a list of parameters to ask about. This routine caches
10987: answers for 5 minutes.
10988:
10989: =item *
10990:
10991: get_courseresdata($courseid, $domain) : dump the entire course resource
10992: data base, returning a hash that is keyed by the resource name and has
10993: values that are the resource value. I believe that the timestamps and
10994: versions are also returned.
10995:
10996:
10997: =back
10998:
10999: =head2 Course Modification
11000:
11001: =over 4
11002:
11003: =item *
11004:
11005: writecoursepref($courseid,%prefs) : write preferences (environment
11006: database) for a course
11007:
11008: =item *
11009:
11010: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11011:
11012: =item *
11013:
11014: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11015:
11016: =back
11017:
11018: =head2 Resource Subroutines
11019:
11020: =over 4
11021:
11022: =item *
11023:
11024: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
11025:
11026: =item *
11027:
11028: repcopy($filename) : subscribes to the requested file, and attempts to
11029: replicate from the owning library server, Might return
11030: 'unavailable', 'not_found', 'forbidden', 'ok', or
11031: 'bad_request', also attempts to grab the metadata for the
11032: resource. Expects the local filesystem pathname
11033: (/home/httpd/html/res/....)
11034:
11035: =back
11036:
11037: =head2 Resource Information
11038:
11039: =over 4
11040:
11041: =item *
11042:
11043: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
11044: a vairety of different possible values, $varname should be a request
11045: string, and the other parameters can be used to specify who and what
11046: one is asking about.
11047:
11048: Possible values for $varname are environment.lastname (or other item
11049: from the envirnment hash), user.name (or someother aspect about the
11050: user), resource.0.maxtries (or some other part and parameter of a
11051: resource)
11052:
11053: =item *
11054:
11055: directcondval($number) : get current value of a condition; reads from a state
11056: string
11057:
11058: =item *
11059:
11060: condval($condidx) : value of condition index based on state
11061:
11062: =item *
11063:
11064: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
11065: resource's metadata, $what should be either a specific key, or either
11066: 'keys' (to get a list of possible keys) or 'packages' to get a list of
11067: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
11068:
11069: this function automatically caches all requests
11070:
11071: =item *
11072:
11073: metadata_query($query,$custom,$customshow) : make a metadata query against the
11074: network of library servers; returns file handle of where SQL and regex results
11075: will be stored for query
11076:
11077: =item *
11078:
11079: symbread($filename) : return symbolic list entry (filename argument optional);
11080: returns the data handle
11081:
11082: =item *
11083:
11084: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
11085: a possible symb for the URL in $thisfn, and if is an encryypted
11086: resource that the user accessed using /enc/ returns a 1 on success, 0
11087: on failure, user must be in a course, as it assumes the existance of
11088: the course initial hash, and uses $env('request.course.id'}
11089:
11090:
11091: =item *
11092:
11093: symbclean($symb) : removes versions numbers from a symb, returns the
11094: cleaned symb
11095:
11096: =item *
11097:
11098: is_on_map($uri) : checks if the $uri is somewhere on the current
11099: course map, user must be in a course for it to work.
11100:
11101: =item *
11102:
11103: numval($salt) : return random seed value (addend for rndseed)
11104:
11105: =item *
11106:
11107: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
11108: a random seed, all arguments are optional, if they aren't sent it uses the
11109: environment to derive them. Note: if symb isn't sent and it can't get one
11110: from &symbread it will use the current time as its return value
11111:
11112: =item *
11113:
11114: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
11115: unfakeable, receipt
11116:
11117: =item *
11118:
11119: receipt() : API to ireceipt working off of env values; given out to users
11120:
11121: =item *
11122:
11123: countacc($url) : count the number of accesses to a given URL
11124:
11125: =item *
11126:
11127: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
11128:
11129: =item *
11130:
11131: checkin($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 $tcrsid)
11132:
11133: =item *
11134:
11135: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
11136:
11137: =item *
11138:
11139: devalidate($symb) : devalidate temporary spreadsheet calculations,
11140: forcing spreadsheet to reevaluate the resource scores next time.
11141:
11142: =back
11143:
11144: =head2 Storing/Retreiving Data
11145:
11146: =over 4
11147:
11148: =item *
11149:
11150: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
11151: for this url; hashref needs to be given and should be a \%hashname; the
11152: remaining args aren't required and if they aren't passed or are '' they will
11153: be derived from the env
11154:
11155: =item *
11156:
11157: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
11158: uses critical subroutine
11159:
11160: =item *
11161:
11162: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
11163: all args are optional
11164:
11165: =item *
11166:
11167: dumpstore($namespace,$udom,$uname,$regexp,$range) :
11168: dumps the complete (or key matching regexp) namespace into a hash
11169: ($udom, $uname, $regexp, $range are optional) for a namespace that is
11170: normally &store()ed into
11171:
11172: $range should be either an integer '100' (give me the first 100
11173: matching records)
11174: or be two integers sperated by a - with no spaces
11175: '30-50' (give me the 30th through the 50th matching
11176: records)
11177:
11178:
11179: =item *
11180:
11181: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
11182: replaces a &store() version of data with a replacement set of data
11183: for a particular resource in a namespace passed in the $storehash hash
11184: reference
11185:
11186: =item *
11187:
11188: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
11189: works very similar to store/cstore, but all data is stored in a
11190: temporary location and can be reset using tmpreset, $storehash should
11191: be a hash reference, returns nothing on success
11192:
11193: =item *
11194:
11195: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
11196: similar to restore, but all data is stored in a temporary location and
11197: can be reset using tmpreset. Returns a hash of values on success,
11198: error string otherwise.
11199:
11200: =item *
11201:
11202: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
11203: deltes all keys for $symb form the temporary storage hash.
11204:
11205: =item *
11206:
11207: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11208: reference filled in from namesp ($udom and $uname are optional)
11209:
11210: =item *
11211:
11212: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
11213: namesp ($udom and $uname are optional)
11214:
11215: =item *
11216:
11217: dump($namespace,$udom,$uname,$regexp,$range) :
11218: dumps the complete (or key matching regexp) namespace into a hash
11219: ($udom, $uname, $regexp, $range are optional)
11220:
11221: $range should be either an integer '100' (give me the first 100
11222: matching records)
11223: or be two integers sperated by a - with no spaces
11224: '30-50' (give me the 30th through the 50th matching
11225: records)
11226: =item *
11227:
11228: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
11229: $store can be a scalar, an array reference, or if the amount to be
11230: incremented is > 1, a hash reference.
11231:
11232: ($udom and $uname are optional)
11233:
11234: =item *
11235:
11236: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
11237: ($udom and $uname are optional)
11238:
11239: =item *
11240:
11241: cput($namespace,$storehash,$udom,$uname) : critical put
11242: ($udom and $uname are optional)
11243:
11244: =item *
11245:
11246: newput($namespace,$storehash,$udom,$uname) :
11247:
11248: Attempts to store the items in the $storehash, but only if they don't
11249: currently exist, if this succeeds you can be certain that you have
11250: successfully created a new key value pair in the $namespace db.
11251:
11252:
11253: Args:
11254: $namespace: name of database to store values to
11255: $storehash: hashref to store to the db
11256: $udom: (optional) domain of user containing the db
11257: $uname: (optional) name of user caontaining the db
11258:
11259: Returns:
11260: 'ok' -> succeeded in storing all keys of $storehash
11261: 'key_exists: <key>' -> failed to anything out of $storehash, as at
11262: least <key> already existed in the db (other
11263: requested keys may also already exist)
11264: 'error: <msg>' -> unable to tie the DB or other error occurred
11265: 'con_lost' -> unable to contact request server
11266: 'refused' -> action was not allowed by remote machine
11267:
11268:
11269: =item *
11270:
11271: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11272: reference filled in from namesp (encrypts the return communication)
11273: ($udom and $uname are optional)
11274:
11275: =item *
11276:
11277: log($udom,$name,$home,$message) : write to permanent log for user; use
11278: critical subroutine
11279:
11280: =item *
11281:
11282: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
11283: array reference filled in from namespace found in domain level on either
11284: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
11285:
11286: =item *
11287:
11288: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
11289: domain level either on specified domain server ($uhome) or primary domain
11290: server ($udom and $uhome are optional)
11291:
11292: =item *
11293:
11294: get_domain_defaults($target_domain) : returns hash with defaults for
11295: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
11296: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
11297: or localauth), initial password or a kerberos realm, language (e.g., en-us).
11298: Values are retrieved from cache (if current), or from domain's configuration.db
11299: (if available), or lastly from values in lonTabs/dns_domain,tab,
11300: or lonTabs/domain.tab.
11301:
11302: %domdefaults = &get_auth_defaults($target_domain);
11303:
11304: =back
11305:
11306: =head2 Network Status Functions
11307:
11308: =over 4
11309:
11310: =item *
11311:
11312: dirlist($uri) : return directory list based on URI
11313:
11314: =item *
11315:
11316: spareserver() : find server with least workload from spare.tab
11317:
11318:
11319: =item *
11320:
11321: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
11322: if there is no corresponding loncapa host.
11323:
11324: =back
11325:
11326:
11327: =head2 Apache Request
11328:
11329: =over 4
11330:
11331: =item *
11332:
11333: ssi($url,%hash) : server side include, does a complete request cycle on url to
11334: localhost, posts hash
11335:
11336: =back
11337:
11338: =head2 Data to String to Data
11339:
11340: =over 4
11341:
11342: =item *
11343:
11344: hash2str(%hash) : convert a hash into a string complete with escaping and '='
11345: and '&' separators, supports elements that are arrayrefs and hashrefs
11346:
11347: =item *
11348:
11349: hashref2str($hashref) : convert a hashref into a string complete with
11350: escaping and '=' and '&' separators, supports elements that are
11351: arrayrefs and hashrefs
11352:
11353: =item *
11354:
11355: arrayref2str($arrayref) : convert an arrayref into a string complete
11356: with escaping and '&' separators, supports elements that are arrayrefs
11357: and hashrefs
11358:
11359: =item *
11360:
11361: str2hash($string) : convert string to hash using unescaping and
11362: splitting on '=' and '&', supports elements that are arrayrefs and
11363: hashrefs
11364:
11365: =item *
11366:
11367: str2array($string) : convert string to hash using unescaping and
11368: splitting on '&', supports elements that are arrayrefs and hashrefs
11369:
11370: =back
11371:
11372: =head2 Logging Routines
11373:
11374: =over 4
11375:
11376: These routines allow one to make log messages in the lonnet.log and
11377: lonnet.perm logfiles.
11378:
11379: =item *
11380:
11381: logtouch() : make sure the logfile, lonnet.log, exists
11382:
11383: =item *
11384:
11385: logthis() : append message to the normal lonnet.log file, it gets
11386: preiodically rolled over and deleted.
11387:
11388: =item *
11389:
11390: logperm() : append a permanent message to lonnet.perm.log, this log
11391: file never gets deleted by any automated portion of the system, only
11392: messages of critical importance should go in here.
11393:
11394: =back
11395:
11396: =head2 General File Helper Routines
11397:
11398: =over 4
11399:
11400: =item *
11401:
11402: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
11403: (a) files in /uploaded
11404: (i) If a local copy of the file exists -
11405: compares modification date of local copy with last-modified date for
11406: definitive version stored on home server for course. If local copy is
11407: stale, requests a new version from the home server and stores it.
11408: If the original has been removed from the home server, then local copy
11409: is unlinked.
11410: (ii) If local copy does not exist -
11411: requests the file from the home server and stores it.
11412:
11413: If $caller is 'uploadrep':
11414: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
11415: for request for files originally uploaded via DOCS.
11416: - returns 'ok' if fresh local copy now available, -1 otherwise.
11417:
11418: Otherwise:
11419: This indicates a call from the content generation phase of the request.
11420: - returns the entire contents of the file or -1.
11421:
11422: (b) files in /res
11423: - returns the entire contents of a file or -1;
11424: it properly subscribes to and replicates the file if neccessary.
11425:
11426:
11427: =item *
11428:
11429: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
11430: reference
11431:
11432: returns either a stat() list of data about the file or an empty list
11433: if the file doesn't exist or couldn't find out about it (connection
11434: problems or user unknown)
11435:
11436: =item *
11437:
11438: filelocation($dir,$file) : returns file system location of a file
11439: based on URI; meant to be "fairly clean" absolute reference, $dir is a
11440: directory that relative $file lookups are to looked in ($dir of /a/dir
11441: and a file of ../bob will become /a/bob)
11442:
11443: =item *
11444:
11445: hreflocation($dir,$file) : returns file system location or a URL; same as
11446: filelocation except for hrefs
11447:
11448: =item *
11449:
11450: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
11451:
11452: =back
11453:
11454: =head2 Usererfile file routines (/uploaded*)
11455:
11456: =over 4
11457:
11458: =item *
11459:
11460: userfileupload(): main rotine for putting a file in a user or course's
11461: filespace, arguments are,
11462:
11463: formname - required - this is the name of the element in $env where the
11464: filename, and the contents of the file to create/modifed exist
11465: the filename is in $env{'form.'.$formname.'.filename'} and the
11466: contents of the file is located in $env{'form.'.$formname}
11467: context - if coursedoc, store the file in the course of the active role
11468: of the current user;
11469: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
11470: if 'canceloverwrite': delete file in tmp/overwrites directory
11471: subdir - required - subdirectory to put the file in under ../userfiles/
11472: if undefined, it will be placed in "unknown"
11473:
11474: (This routine calls clean_filename() to remove any dangerous
11475: characters from the filename, and then calls finuserfileupload() to
11476: complete the transaction)
11477:
11478: returns either the url of the uploaded file (/uploaded/....) if successful
11479: and /adm/notfound.html if unsuccessful
11480:
11481: =item *
11482:
11483: clean_filename(): routine for cleaing a filename up for storage in
11484: userfile space, argument is:
11485:
11486: filename - proposed filename
11487:
11488: returns: the new clean filename
11489:
11490: =item *
11491:
11492: finishuserfileupload(): routine that creates and sends the file to
11493: userspace, probably shouldn't be called directly
11494:
11495: docuname: username or courseid of destination for the file
11496: docudom: domain of user/course of destination for the file
11497: formname: same as for userfileupload()
11498: fname: filename (including subdirectories) for the file
11499: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
11500: allfiles: reference to hash used to store objects found by parser
11501: codebase: reference to hash used for codebases of java objects found by parser
11502: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
11503: thumbheight: height (pixels) of thumbnail to be created for uploaded image
11504: resizewidth: width to be used to resize image using resizeImage from ImageMagick
11505: resizeheight: height to be used to resize image using resizeImage from ImageMagick
11506: context: if 'overwrite', will move the uploaded file from its temporary location to
11507: userfiles to facilitate overwriting a previously uploaded file with same name.
11508: mimetype: reference to scalar to accommodate mime type determined
11509: from File::MMagic if $parser = parse.
11510:
11511: returns either the url of the uploaded file (/uploaded/....) if successful
11512: and /adm/notfound.html if unsuccessful (or an error message if context
11513: was 'overwrite').
11514:
11515:
11516: =item *
11517:
11518: renameuserfile(): renames an existing userfile to a new name
11519:
11520: Args:
11521: docuname: username or courseid of destination for the file
11522: docudom: domain of user/course of destination for the file
11523: old: current file name (including any subdirs under userfiles)
11524: new: desired file name (including any subdirs under userfiles)
11525:
11526: =item *
11527:
11528: mkdiruserfile(): creates a directory is a userfiles dir
11529:
11530: Args:
11531: docuname: username or courseid of destination for the file
11532: docudom: domain of user/course of destination for the file
11533: dir: dir to create (including any subdirs under userfiles)
11534:
11535: =item *
11536:
11537: removeuserfile(): removes a file that exists in userfiles
11538:
11539: Args:
11540: docuname: username or courseid of destination for the file
11541: docudom: domain of user/course of destination for the file
11542: fname: filname to delete (including any subdirs under userfiles)
11543:
11544: =item *
11545:
11546: removeuploadedurl(): convience function for removeuserfile()
11547:
11548: Args:
11549: url: a full /uploaded/... url to delete
11550:
11551: =item *
11552:
11553: get_portfile_permissions():
11554: Args:
11555: domain: domain of user or course contain the portfolio files
11556: user: name of user or num of course contain the portfolio files
11557: Returns:
11558: hashref of a dump of the proper file_permissions.db
11559:
11560:
11561: =item *
11562:
11563: get_access_controls():
11564:
11565: Args:
11566: current_permissions: the hash ref returned from get_portfile_permissions()
11567: group: (optional) the group you want the files associated with
11568: file: (optional) the file you want access info on
11569:
11570: Returns:
11571: a hash (keys are file names) of hashes containing
11572: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
11573: values are XML containing access control settings (see below)
11574:
11575: Internal notes:
11576:
11577: access controls are stored in file_permissions.db as key=value pairs.
11578: key -> path to file/file_name\0uniqueID:scope_end_start
11579: where scope -> public,guest,course,group,domains or users.
11580: end -> UNIX time for end of access (0 -> no end date)
11581: start -> UNIX time for start of access
11582:
11583: value -> XML description of access control
11584: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
11585: <start></start>
11586: <end></end>
11587:
11588: <password></password> for scope type = guest
11589:
11590: <domain></domain> for scope type = course or group
11591: <number></number>
11592: <roles id="">
11593: <role></role>
11594: <access></access>
11595: <section></section>
11596: <group></group>
11597: </roles>
11598:
11599: <dom></dom> for scope type = domains
11600:
11601: <users> for scope type = users
11602: <user>
11603: <uname></uname>
11604: <udom></udom>
11605: </user>
11606: </users>
11607: </scope>
11608:
11609: Access data is also aggregated for each file in an additional key=value pair:
11610: key -> path to file/file_name\0accesscontrol
11611: value -> reference to hash
11612: hash contains key = value pairs
11613: where key = uniqueID:scope_end_start
11614: value = UNIX time record was last updated
11615:
11616: Used to improve speed of look-ups of access controls for each file.
11617:
11618: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
11619:
11620: modify_access_controls():
11621:
11622: Modifies access controls for a portfolio file
11623: Args
11624: 1. file name
11625: 2. reference to hash of required changes,
11626: 3. domain
11627: 4. username
11628: where domain,username are the domain of the portfolio owner
11629: (either a user or a course)
11630:
11631: Returns:
11632: 1. result of additions or updates ('ok' or 'error', with error message).
11633: 2. result of deletions ('ok' or 'error', with error message).
11634: 3. reference to hash of any new or updated access controls.
11635: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
11636: key = integer (inbound ID)
11637: value = uniqueID
11638:
11639: =back
11640:
11641: =head2 HTTP Helper Routines
11642:
11643: =over 4
11644:
11645: =item *
11646:
11647: escape() : unpack non-word characters into CGI-compatible hex codes
11648:
11649: =item *
11650:
11651: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
11652:
11653: =back
11654:
11655: =head1 PRIVATE SUBROUTINES
11656:
11657: =head2 Underlying communication routines (Shouldn't call)
11658:
11659: =over 4
11660:
11661: =item *
11662:
11663: subreply() : tries to pass a message to lonc, returns con_lost if incapable
11664:
11665: =item *
11666:
11667: reply() : uses subreply to send a message to remote machine, logs all failures
11668:
11669: =item *
11670:
11671: critical() : passes a critical message to another server; if cannot
11672: get through then place message in connection buffer directory and
11673: returns con_delayed, if incapable of saving message, returns
11674: con_failed
11675:
11676: =item *
11677:
11678: reconlonc() : tries to reconnect lonc client processes.
11679:
11680: =back
11681:
11682: =head2 Resource Access Logging
11683:
11684: =over 4
11685:
11686: =item *
11687:
11688: flushcourselogs() : flush (save) buffer logs and access logs
11689:
11690: =item *
11691:
11692: courselog($what) : save message for course in hash
11693:
11694: =item *
11695:
11696: courseacclog($what) : save message for course using &courselog(). Perform
11697: special processing for specific resource types (problems, exams, quizzes, etc).
11698:
11699: =item *
11700:
11701: goodbye() : flush course logs and log shutting down; it is called in srm.conf
11702: as a PerlChildExitHandler
11703:
11704: =back
11705:
11706: =head2 Other
11707:
11708: =over 4
11709:
11710: =item *
11711:
11712: symblist($mapname,%newhash) : update symbolic storage links
11713:
11714: =back
11715:
11716: =cut
11717:
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