1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1119 2011/07/18 10:32:48 foxr 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:
99: use File::Copy;
100:
101: my $readit;
102: my $max_connection_retries = 10; # Or some such value.
103:
104: require Exporter;
105:
106: our @ISA = qw (Exporter);
107: our @EXPORT = qw(%env);
108:
109:
110: # --------------------------------------------------------------------- Logging
111: {
112: my $logid;
113: sub instructor_log {
114: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
115: if (($cnum eq '') || ($cdom eq '')) {
116: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
117: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
118: }
119: $logid++;
120: my $now = time();
121: my $id=$now.'00000'.$$.'00000'.$logid;
122: return &Apache::lonnet::put('nohist_'.$hash_name,
123: { $id => {
124: 'exe_uname' => $env{'user.name'},
125: 'exe_udom' => $env{'user.domain'},
126: 'exe_time' => $now,
127: 'exe_ip' => $ENV{'REMOTE_ADDR'},
128: 'delflag' => $delflag,
129: 'logentry' => $storehash,
130: 'uname' => $uname,
131: 'udom' => $udom,
132: }
133: },$cdom,$cnum);
134: }
135: }
136:
137: sub logtouch {
138: my $execdir=$perlvar{'lonDaemons'};
139: unless (-e "$execdir/logs/lonnet.log") {
140: open(my $fh,">>$execdir/logs/lonnet.log");
141: close $fh;
142: }
143: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
144: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
145: }
146:
147: sub logthis {
148: my $message=shift;
149: my $execdir=$perlvar{'lonDaemons'};
150: my $now=time;
151: my $local=localtime($now);
152: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
153: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
154: print $fh $logstring;
155: close($fh);
156: }
157: return 1;
158: }
159:
160: sub logperm {
161: my $message=shift;
162: my $execdir=$perlvar{'lonDaemons'};
163: my $now=time;
164: my $local=localtime($now);
165: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
166: print $fh "$now:$message:$local\n";
167: close($fh);
168: }
169: return 1;
170: }
171:
172: sub create_connection {
173: my ($hostname,$lonid) = @_;
174: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
175: Type => SOCK_STREAM,
176: Timeout => 10);
177: return 0 if (!$client);
178: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
179: my $result = <$client>;
180: chomp($result);
181: return 1 if ($result eq 'done');
182: return 0;
183: }
184:
185: sub get_server_timezone {
186: my ($cnum,$cdom) = @_;
187: my $home=&homeserver($cnum,$cdom);
188: if ($home ne 'no_host') {
189: my $cachetime = 24*3600;
190: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
191: if (defined($cached)) {
192: return $timezone;
193: } else {
194: my $timezone = &reply('servertimezone',$home);
195: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
196: }
197: }
198: }
199:
200: sub get_server_distarch {
201: my ($lonhost,$ignore_cache) = @_;
202: if (defined($lonhost)) {
203: if (!defined(&hostname($lonhost))) {
204: return;
205: }
206: my $cachetime = 12*3600;
207: if (!$ignore_cache) {
208: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
209: if (defined($cached)) {
210: return $distarch;
211: }
212: }
213: my $rep = &reply('serverdistarch',$lonhost);
214: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
215: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
216: $rep eq '') {
217: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
218: }
219: }
220: return;
221: }
222:
223: sub get_server_loncaparev {
224: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
225: if (defined($lonhost)) {
226: if (!defined(&hostname($lonhost))) {
227: undef($lonhost);
228: }
229: }
230: if (!defined($lonhost)) {
231: if (defined(&domain($dom,'primary'))) {
232: $lonhost=&domain($dom,'primary');
233: if ($lonhost eq 'no_host') {
234: undef($lonhost);
235: }
236: }
237: }
238: if (defined($lonhost)) {
239: my $cachetime = 12*3600;
240: if (!$ignore_cache) {
241: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
242: if (defined($cached)) {
243: return $loncaparev;
244: }
245: }
246: my ($answer,$loncaparev);
247: my @ids=¤t_machine_ids();
248: if (grep(/^\Q$lonhost\E$/,@ids)) {
249: $answer = $perlvar{'lonVersion'};
250: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
251: $loncaparev = $1;
252: }
253: } else {
254: $answer = &reply('serverloncaparev',$lonhost);
255: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
256: if ($caller eq 'loncron') {
257: my $ua=new LWP::UserAgent;
258: $ua->timeout(4);
259: my $protocol = $protocol{$lonhost};
260: $protocol = 'http' if ($protocol ne 'https');
261: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
262: my $request=new HTTP::Request('GET',$url);
263: my $response=$ua->request($request);
264: unless ($response->is_error()) {
265: my $content = $response->content;
266: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
267: $loncaparev = $1;
268: }
269: }
270: } else {
271: $loncaparev = $loncaparevs{$lonhost};
272: }
273: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
274: $loncaparev = $1;
275: }
276: }
277: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
278: }
279: }
280:
281: sub get_server_homeID {
282: my ($hostname,$ignore_cache,$caller) = @_;
283: unless ($ignore_cache) {
284: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
285: if (defined($cached)) {
286: return $serverhomeID;
287: }
288: }
289: my $cachetime = 12*3600;
290: my $serverhomeID;
291: if ($caller eq 'loncron') {
292: my @machine_ids = &machine_ids($hostname);
293: foreach my $id (@machine_ids) {
294: my $response = &reply('serverhomeID',$id);
295: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
296: $serverhomeID = $response;
297: last;
298: }
299: }
300: if ($serverhomeID eq '') {
301: $serverhomeID = $machine_ids[-1];
302: }
303: } else {
304: $serverhomeID = $serverhomeIDs{$hostname};
305: }
306: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
307: }
308:
309: # -------------------------------------------------- Non-critical communication
310: sub subreply {
311: my ($cmd,$server)=@_;
312: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
313: #
314: # With loncnew process trimming, there's a timing hole between lonc server
315: # process exit and the master server picking up the listen on the AF_UNIX
316: # socket. In that time interval, a lock file will exist:
317:
318: my $lockfile=$peerfile.".lock";
319: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
320: sleep(1);
321: }
322: # At this point, either a loncnew parent is listening or an old lonc
323: # or loncnew child is listening so we can connect or everything's dead.
324: #
325: # We'll give the connection a few tries before abandoning it. If
326: # connection is not possible, we'll con_lost back to the client.
327: #
328: my $client;
329: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
330: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
331: Type => SOCK_STREAM,
332: Timeout => 10);
333: if ($client) {
334: last; # Connected!
335: } else {
336: &create_connection(&hostname($server),$server);
337: }
338: sleep(1); # Try again later if failed connection.
339: }
340: my $answer;
341: if ($client) {
342: print $client "sethost:$server:$cmd\n";
343: $answer=<$client>;
344: if (!$answer) { $answer="con_lost"; }
345: chomp($answer);
346: } else {
347: $answer = 'con_lost'; # Failed connection.
348: }
349: return $answer;
350: }
351:
352: sub reply {
353: my ($cmd,$server)=@_;
354: unless (defined(&hostname($server))) { return 'no_such_host'; }
355: my $answer=subreply($cmd,$server);
356: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
357: &logthis("<font color=\"blue\">WARNING:".
358: " $cmd to $server returned $answer</font>");
359: }
360: return $answer;
361: }
362:
363: # ----------------------------------------------------------- Send USR1 to lonc
364:
365: sub reconlonc {
366: my ($lonid) = @_;
367: my $hostname = &hostname($lonid);
368: if ($lonid) {
369: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
370: if ($hostname && -e $peerfile) {
371: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
372: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
373: Type => SOCK_STREAM,
374: Timeout => 10);
375: if ($client) {
376: print $client ("reset_retries\n");
377: my $answer=<$client>;
378: #reset just this one.
379: }
380: }
381: return;
382: }
383:
384: &logthis("Trying to reconnect lonc");
385: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
386: if (open(my $fh,"<$loncfile")) {
387: my $loncpid=<$fh>;
388: chomp($loncpid);
389: if (kill 0 => $loncpid) {
390: &logthis("lonc at pid $loncpid responding, sending USR1");
391: kill USR1 => $loncpid;
392: sleep 1;
393: } else {
394: &logthis(
395: "<font color=\"blue\">WARNING:".
396: " lonc at pid $loncpid not responding, giving up</font>");
397: }
398: } else {
399: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
400: }
401: }
402:
403: # ------------------------------------------------------ Critical communication
404:
405: sub critical {
406: my ($cmd,$server)=@_;
407: unless (&hostname($server)) {
408: &logthis("<font color=\"blue\">WARNING:".
409: " Critical message to unknown server ($server)</font>");
410: return 'no_such_host';
411: }
412: my $answer=reply($cmd,$server);
413: if ($answer eq 'con_lost') {
414: &reconlonc("$perlvar{'lonSockDir'}/$server");
415: my $answer=reply($cmd,$server);
416: if ($answer eq 'con_lost') {
417: my $now=time;
418: my $middlename=$cmd;
419: $middlename=substr($middlename,0,16);
420: $middlename=~s/\W//g;
421: my $dfilename=
422: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
423: $dumpcount++;
424: {
425: my $dfh;
426: if (open($dfh,">$dfilename")) {
427: print $dfh "$cmd\n";
428: close($dfh);
429: }
430: }
431: sleep 2;
432: my $wcmd='';
433: {
434: my $dfh;
435: if (open($dfh,"<$dfilename")) {
436: $wcmd=<$dfh>;
437: close($dfh);
438: }
439: }
440: chomp($wcmd);
441: if ($wcmd eq $cmd) {
442: &logthis("<font color=\"blue\">WARNING: ".
443: "Connection buffer $dfilename: $cmd</font>");
444: &logperm("D:$server:$cmd");
445: return 'con_delayed';
446: } else {
447: &logthis("<font color=\"red\">CRITICAL:"
448: ." Critical connection failed: $server $cmd</font>");
449: &logperm("F:$server:$cmd");
450: return 'con_failed';
451: }
452: }
453: }
454: return $answer;
455: }
456:
457: # ------------------------------------------- check if return value is an error
458:
459: sub error {
460: my ($result) = @_;
461: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
462: if ($2 == 2) { return undef; }
463: return $1;
464: }
465: return undef;
466: }
467:
468: sub convert_and_load_session_env {
469: my ($lonidsdir,$handle)=@_;
470: my @profile;
471: {
472: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
473: if (!$opened) {
474: return 0;
475: }
476: flock($idf,LOCK_SH);
477: @profile=<$idf>;
478: close($idf);
479: }
480: my %temp_env;
481: foreach my $line (@profile) {
482: if ($line !~ m/=/) {
483: return 0;
484: }
485: chomp($line);
486: my ($envname,$envvalue)=split(/=/,$line,2);
487: $temp_env{&unescape($envname)} = &unescape($envvalue);
488: }
489: unlink("$lonidsdir/$handle.id");
490: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
491: 0640)) {
492: %disk_env = %temp_env;
493: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
494: untie(%disk_env);
495: }
496: return 1;
497: }
498:
499: # ------------------------------------------- Transfer profile into environment
500: my $env_loaded;
501: sub transfer_profile_to_env {
502: my ($lonidsdir,$handle,$force_transfer) = @_;
503: if (!$force_transfer && $env_loaded) { return; }
504:
505: if (!defined($lonidsdir)) {
506: $lonidsdir = $perlvar{'lonIDsDir'};
507: }
508: if (!defined($handle)) {
509: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
510: }
511:
512: my $convert;
513: {
514: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
515: if (!$opened) {
516: return;
517: }
518: flock($idf,LOCK_SH);
519: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
520: &GDBM_READER(),0640)) {
521: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
522: untie(%disk_env);
523: } else {
524: $convert = 1;
525: }
526: }
527: if ($convert) {
528: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
529: &logthis("Failed to load session, or convert session.");
530: }
531: }
532:
533: my %remove;
534: while ( my $envname = each(%env) ) {
535: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
536: if ($time < time-300) {
537: $remove{$key}++;
538: }
539: }
540: }
541:
542: $env{'user.environment'} = "$lonidsdir/$handle.id";
543: $env_loaded=1;
544: foreach my $expired_key (keys(%remove)) {
545: &delenv($expired_key);
546: }
547: }
548:
549: # ---------------------------------------------------- Check for valid session
550: sub check_for_valid_session {
551: my ($r) = @_;
552: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
553: my $lonid=$cookies{'lonID'};
554: return undef if (!$lonid);
555:
556: my $handle=&LONCAPA::clean_handle($lonid->value);
557: my $lonidsdir=$r->dir_config('lonIDsDir');
558: return undef if (!-e "$lonidsdir/$handle.id");
559:
560: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
561: return undef if (!$opened);
562:
563: flock($idf,LOCK_SH);
564: my %disk_env;
565: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
566: &GDBM_READER(),0640)) {
567: return undef;
568: }
569:
570: if (!defined($disk_env{'user.name'})
571: || !defined($disk_env{'user.domain'})) {
572: return undef;
573: }
574: return $handle;
575: }
576:
577: sub timed_flock {
578: my ($file,$lock_type) = @_;
579: my $failed=0;
580: eval {
581: local $SIG{__DIE__}='DEFAULT';
582: local $SIG{ALRM}=sub {
583: $failed=1;
584: die("failed lock");
585: };
586: alarm(13);
587: flock($file,$lock_type);
588: alarm(0);
589: };
590: if ($failed) {
591: return undef;
592: } else {
593: return 1;
594: }
595: }
596:
597: # ---------------------------------------------------------- Append Environment
598:
599: sub appenv {
600: my ($newenv,$roles) = @_;
601: if (ref($newenv) eq 'HASH') {
602: foreach my $key (keys(%{$newenv})) {
603: my $refused = 0;
604: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
605: $refused = 1;
606: if (ref($roles) eq 'ARRAY') {
607: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
608: if (grep(/^\Q$role\E$/,@{$roles})) {
609: $refused = 0;
610: }
611: }
612: }
613: if ($refused) {
614: &logthis("<font color=\"blue\">WARNING: ".
615: "Attempt to modify environment ".$key." to ".$newenv->{$key}
616: .'</font>');
617: delete($newenv->{$key});
618: } else {
619: $env{$key}=$newenv->{$key};
620: }
621: }
622: my $opened = open(my $env_file,'+<',$env{'user.environment'});
623: if ($opened
624: && &timed_flock($env_file,LOCK_EX)
625: &&
626: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
627: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
628: while (my ($key,$value) = each(%{$newenv})) {
629: $disk_env{$key} = $value;
630: }
631: untie(%disk_env);
632: }
633: }
634: return 'ok';
635: }
636: # ----------------------------------------------------- Delete from Environment
637:
638: sub delenv {
639: my ($delthis,$regexp,$roles) = @_;
640: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
641: my $refused = 1;
642: if (ref($roles) eq 'ARRAY') {
643: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
644: if (grep(/^\Q$role\E$/,@{$roles})) {
645: $refused = 0;
646: }
647: }
648: if ($refused) {
649: &logthis("<font color=\"blue\">WARNING: ".
650: "Attempt to delete from environment ".$delthis);
651: return 'error';
652: }
653: }
654: my $opened = open(my $env_file,'+<',$env{'user.environment'});
655: if ($opened
656: && &timed_flock($env_file,LOCK_EX)
657: &&
658: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
659: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
660: foreach my $key (keys(%disk_env)) {
661: if ($regexp) {
662: if ($key=~/^$delthis/) {
663: delete($env{$key});
664: delete($disk_env{$key});
665: }
666: } else {
667: if ($key=~/^\Q$delthis\E/) {
668: delete($env{$key});
669: delete($disk_env{$key});
670: }
671: }
672: }
673: untie(%disk_env);
674: }
675: return 'ok';
676: }
677:
678: sub get_env_multiple {
679: my ($name) = @_;
680: my @values;
681: if (defined($env{$name})) {
682: # exists is it an array
683: if (ref($env{$name})) {
684: @values=@{ $env{$name} };
685: } else {
686: $values[0]=$env{$name};
687: }
688: }
689: return(@values);
690: }
691:
692: # ------------------------------------------------------------------- Locking
693:
694: sub set_lock {
695: my ($text)=@_;
696: $locknum++;
697: my $id=$$.'-'.$locknum;
698: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
699: 'session.lock.'.$id => $text});
700: return $id;
701: }
702:
703: sub get_locks {
704: my $num=0;
705: my %texts=();
706: foreach my $lock (split(/\,/,$env{'session.locks'})) {
707: if ($lock=~/\w/) {
708: $num++;
709: $texts{$lock}=$env{'session.lock.'.$lock};
710: }
711: }
712: return ($num,%texts);
713: }
714:
715: sub remove_lock {
716: my ($id)=@_;
717: my $newlocks='';
718: foreach my $lock (split(/\,/,$env{'session.locks'})) {
719: if (($lock=~/\w/) && ($lock ne $id)) {
720: $newlocks.=','.$lock;
721: }
722: }
723: &appenv({'session.locks' => $newlocks});
724: &delenv('session.lock.'.$id);
725: }
726:
727: sub remove_all_locks {
728: my $activelocks=$env{'session.locks'};
729: foreach my $lock (split(/\,/,$env{'session.locks'})) {
730: if ($lock=~/\w/) {
731: &remove_lock($lock);
732: }
733: }
734: }
735:
736:
737: # ------------------------------------------ Find out current server userload
738: sub userload {
739: my $numusers=0;
740: {
741: opendir(LONIDS,$perlvar{'lonIDsDir'});
742: my $filename;
743: my $curtime=time;
744: while ($filename=readdir(LONIDS)) {
745: next if ($filename eq '.' || $filename eq '..');
746: next if ($filename =~ /publicuser_\d+\.id/);
747: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
748: if ($curtime-$mtime < 1800) { $numusers++; }
749: }
750: closedir(LONIDS);
751: }
752: my $userloadpercent=0;
753: my $maxuserload=$perlvar{'lonUserLoadLim'};
754: if ($maxuserload) {
755: $userloadpercent=100*$numusers/$maxuserload;
756: }
757: $userloadpercent=sprintf("%.2f",$userloadpercent);
758: return $userloadpercent;
759: }
760:
761: # ------------------------------ Find server with least workload from spare.tab
762:
763: sub spareserver {
764: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
765: my $spare_server;
766: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
767: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
768: : $userloadpercent;
769: my ($uint_dom,$remotesessions);
770: if (($udom ne '') && (&domain($udom) ne '')) {
771: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
772: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
773: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
774: $remotesessions = $udomdefaults{'remotesessions'};
775: }
776: foreach my $try_server (@{ $spareid{'primary'} }) {
777: if ($uint_dom) {
778: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
779: $try_server));
780: }
781: ($spare_server, $lowest_load) =
782: &compare_server_load($try_server, $spare_server, $lowest_load);
783: }
784:
785: my $found_server = ($spare_server ne '' && $lowest_load < 100);
786:
787: if (!$found_server) {
788: foreach my $try_server (@{ $spareid{'default'} }) {
789: if ($uint_dom) {
790: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
791: $try_server));
792: }
793: ($spare_server, $lowest_load) =
794: &compare_server_load($try_server, $spare_server, $lowest_load);
795: }
796: }
797:
798: if (!$want_server_name) {
799: my $protocol = 'http';
800: if ($protocol{$spare_server} eq 'https') {
801: $protocol = $protocol{$spare_server};
802: }
803: if (defined($spare_server)) {
804: my $hostname = &hostname($spare_server);
805: if (defined($hostname)) {
806: $spare_server = $protocol.'://'.$hostname;
807: }
808: }
809: }
810: return $spare_server;
811: }
812:
813: sub compare_server_load {
814: my ($try_server, $spare_server, $lowest_load) = @_;
815:
816: my $loadans = &reply('load', $try_server);
817: my $userloadans = &reply('userload',$try_server);
818:
819: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
820: return ($spare_server, $lowest_load); #didn't get a number from the server
821: }
822:
823: my $load;
824: if ($loadans =~ /\d/) {
825: if ($userloadans =~ /\d/) {
826: #both are numbers, pick the bigger one
827: $load = ($loadans > $userloadans) ? $loadans
828: : $userloadans;
829: } else {
830: $load = $loadans;
831: }
832: } else {
833: $load = $userloadans;
834: }
835:
836: if (($load =~ /\d/) && ($load < $lowest_load)) {
837: $spare_server = $try_server;
838: $lowest_load = $load;
839: }
840: return ($spare_server,$lowest_load);
841: }
842:
843: # --------------------------- ask offload servers if user already has a session
844: sub find_existing_session {
845: my ($udom,$uname) = @_;
846: foreach my $try_server (@{ $spareid{'primary'} },
847: @{ $spareid{'default'} }) {
848: return $try_server if (&has_user_session($try_server, $udom, $uname));
849: }
850: return;
851: }
852:
853: # -------------------------------- ask if server already has a session for user
854: sub has_user_session {
855: my ($lonid,$udom,$uname) = @_;
856: my $result = &reply(join(':','userhassession',
857: map {&escape($_)} ($udom,$uname)),$lonid);
858: return 1 if ($result eq 'ok');
859:
860: return 0;
861: }
862:
863: # --------- determine least loaded server in a user's domain which allows login
864:
865: sub choose_server {
866: my ($udom,$checkloginvia) = @_;
867: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
868: my %servers = &get_servers($udom);
869: my $lowest_load = 30000;
870: my ($login_host,$hostname,$portal_path);
871: foreach my $lonhost (keys(%servers)) {
872: my $loginvia;
873: if ($checkloginvia) {
874: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
875: if ($loginvia) {
876: my ($server,$path) = split(/:/,$loginvia);
877: ($login_host, $lowest_load) =
878: &compare_server_load($server, $login_host, $lowest_load);
879: if ($login_host eq $server) {
880: $portal_path = $path;
881: }
882: } else {
883: ($login_host, $lowest_load) =
884: &compare_server_load($lonhost, $login_host, $lowest_load);
885: if ($login_host eq $lonhost) {
886: $portal_path = '';
887: }
888: }
889: } else {
890: ($login_host, $lowest_load) =
891: &compare_server_load($lonhost, $login_host, $lowest_load);
892: }
893: }
894: if ($login_host ne '') {
895: $hostname = &hostname($login_host);
896: }
897: return ($login_host,$hostname,$portal_path);
898: }
899:
900: # --------------------------------------------- Try to change a user's password
901:
902: sub changepass {
903: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
904: $currentpass = &escape($currentpass);
905: $newpass = &escape($newpass);
906: my $lonhost = $perlvar{'lonHostID'};
907: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
908: $server);
909: if (! $answer) {
910: &logthis("No reply on password change request to $server ".
911: "by $uname in domain $udom.");
912: } elsif ($answer =~ "^ok") {
913: &logthis("$uname in $udom successfully changed their password ".
914: "on $server.");
915: } elsif ($answer =~ "^pwchange_failure") {
916: &logthis("$uname in $udom was unable to change their password ".
917: "on $server. The action was blocked by either lcpasswd ".
918: "or pwchange");
919: } elsif ($answer =~ "^non_authorized") {
920: &logthis("$uname in $udom did not get their password correct when ".
921: "attempting to change it on $server.");
922: } elsif ($answer =~ "^auth_mode_error") {
923: &logthis("$uname in $udom attempted to change their password despite ".
924: "not being locally or internally authenticated on $server.");
925: } elsif ($answer =~ "^unknown_user") {
926: &logthis("$uname in $udom attempted to change their password ".
927: "on $server but were unable to because $server is not ".
928: "their home server.");
929: } elsif ($answer =~ "^refused") {
930: &logthis("$server refused to change $uname in $udom password because ".
931: "it was sent an unencrypted request to change the password.");
932: } elsif ($answer =~ "invalid_client") {
933: &logthis("$server refused to change $uname in $udom password because ".
934: "it was a reset by e-mail originating from an invalid server.");
935: }
936: return $answer;
937: }
938:
939: # ----------------------- Try to determine user's current authentication scheme
940:
941: sub queryauthenticate {
942: my ($uname,$udom)=@_;
943: my $uhome=&homeserver($uname,$udom);
944: if (!$uhome) {
945: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
946: return 'no_host';
947: }
948: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
949: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
950: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
951: }
952: return $answer;
953: }
954:
955: # --------- Try to authenticate user from domain's lib servers (first this one)
956:
957: sub authenticate {
958: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
959: $upass=&escape($upass);
960: $uname= &LONCAPA::clean_username($uname);
961: my $uhome=&homeserver($uname,$udom,1);
962: my $newhome;
963: if ((!$uhome) || ($uhome eq 'no_host')) {
964: # Maybe the machine was offline and only re-appeared again recently?
965: &reconlonc();
966: # One more
967: $uhome=&homeserver($uname,$udom,1);
968: if (($uhome eq 'no_host') && $checkdefauth) {
969: if (defined(&domain($udom,'primary'))) {
970: $newhome=&domain($udom,'primary');
971: }
972: if ($newhome ne '') {
973: $uhome = $newhome;
974: }
975: }
976: if ((!$uhome) || ($uhome eq 'no_host')) {
977: &logthis("User $uname at $udom is unknown in authenticate");
978: return 'no_host';
979: }
980: }
981: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
982: if ($answer eq 'authorized') {
983: if ($newhome) {
984: &logthis("User $uname at $udom authorized by $uhome, but needs account");
985: return 'no_account_on_host';
986: } else {
987: &logthis("User $uname at $udom authorized by $uhome");
988: return $uhome;
989: }
990: }
991: if ($answer eq 'non_authorized') {
992: &logthis("User $uname at $udom rejected by $uhome");
993: return 'no_host';
994: }
995: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
996: return 'no_host';
997: }
998:
999: sub can_host_session {
1000: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1001: my $canhost = 1;
1002: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1003: if (ref($remotesessions) eq 'HASH') {
1004: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1005: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1006: $canhost = 0;
1007: } else {
1008: $canhost = 1;
1009: }
1010: }
1011: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1012: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1013: $canhost = 1;
1014: } else {
1015: $canhost = 0;
1016: }
1017: }
1018: if ($canhost) {
1019: if ($remotesessions->{'version'} ne '') {
1020: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1021: if ($reqmajor ne '' && $reqminor ne '') {
1022: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1023: my $major = $1;
1024: my $minor = $2;
1025: if (($major < $reqmajor ) ||
1026: (($major == $reqmajor) && ($minor < $reqminor))) {
1027: $canhost = 0;
1028: }
1029: } else {
1030: $canhost = 0;
1031: }
1032: }
1033: }
1034: }
1035: }
1036: if ($canhost) {
1037: if (ref($hostedsessions) eq 'HASH') {
1038: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1039: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'excludedomain'}})) {
1040: $canhost = 0;
1041: } else {
1042: $canhost = 1;
1043: }
1044: }
1045: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1046: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'includedomain'}})) {
1047: $canhost = 1;
1048: } else {
1049: $canhost = 0;
1050: }
1051: }
1052: }
1053: }
1054: return $canhost;
1055: }
1056:
1057: sub spare_can_host {
1058: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1059: my $canhost=1;
1060: my @intdoms;
1061: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1062: if (ref($internet_names) eq 'ARRAY') {
1063: @intdoms = @{$internet_names};
1064: }
1065: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1066: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1067: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1068: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1069: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1070: $canhost = &can_host_session($udom,$try_server,$remoterev,
1071: $remotesessions,
1072: $defdomdefaults{'hostedsessions'});
1073: }
1074: return $canhost;
1075: }
1076:
1077: # ---------------------- Find the homebase for a user from domain's lib servers
1078:
1079: my %homecache;
1080: sub homeserver {
1081: my ($uname,$udom,$ignoreBadCache)=@_;
1082: my $index="$uname:$udom";
1083:
1084: if (exists($homecache{$index})) { return $homecache{$index}; }
1085:
1086: my %servers = &get_servers($udom,'library');
1087: foreach my $tryserver (keys(%servers)) {
1088: next if ($ignoreBadCache ne 'true' &&
1089: exists($badServerCache{$tryserver}));
1090:
1091: my $answer=reply("home:$udom:$uname",$tryserver);
1092: if ($answer eq 'found') {
1093: delete($badServerCache{$tryserver});
1094: return $homecache{$index}=$tryserver;
1095: } elsif ($answer eq 'no_host') {
1096: $badServerCache{$tryserver}=1;
1097: }
1098: }
1099: return 'no_host';
1100: }
1101:
1102: # ------------------------------------- Find the usernames behind a list of IDs
1103:
1104: sub idget {
1105: my ($udom,@ids)=@_;
1106: my %returnhash=();
1107:
1108: my %servers = &get_servers($udom,'library');
1109: foreach my $tryserver (keys(%servers)) {
1110: my $idlist=join('&',@ids);
1111: $idlist=~tr/A-Z/a-z/;
1112: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1113: my @answer=();
1114: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1115: @answer=split(/\&/,$reply);
1116: } ;
1117: my $i;
1118: for ($i=0;$i<=$#ids;$i++) {
1119: if ($answer[$i]) {
1120: $returnhash{$ids[$i]}=$answer[$i];
1121: }
1122: }
1123: }
1124: return %returnhash;
1125: }
1126:
1127: # ------------------------------------- Find the IDs behind a list of usernames
1128:
1129: sub idrget {
1130: my ($udom,@unames)=@_;
1131: my %returnhash=();
1132: foreach my $uname (@unames) {
1133: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1134: }
1135: return %returnhash;
1136: }
1137:
1138: # ------------------------------- Store away a list of names and associated IDs
1139:
1140: sub idput {
1141: my ($udom,%ids)=@_;
1142: my %servers=();
1143: foreach my $uname (keys(%ids)) {
1144: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1145: my $uhom=&homeserver($uname,$udom);
1146: if ($uhom ne 'no_host') {
1147: my $id=&escape($ids{$uname});
1148: $id=~tr/A-Z/a-z/;
1149: my $esc_unam=&escape($uname);
1150: if ($servers{$uhom}) {
1151: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1152: } else {
1153: $servers{$uhom}=$id.'='.$esc_unam;
1154: }
1155: }
1156: }
1157: foreach my $server (keys(%servers)) {
1158: &critical('idput:'.$udom.':'.$servers{$server},$server);
1159: }
1160: }
1161:
1162: # ------------------------------dump from db file owned by domainconfig user
1163: sub dump_dom {
1164: my ($namespace,$udom,$regexp,$range)=@_;
1165: if (!$udom) {
1166: $udom=$env{'user.domain'};
1167: }
1168: my %returnhash;
1169: if ($udom) {
1170: my $uname = &get_domainconfiguser($udom);
1171: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1172: }
1173: return %returnhash;
1174: }
1175:
1176: # ------------------------------------------ get items from domain db files
1177:
1178: sub get_dom {
1179: my ($namespace,$storearr,$udom,$uhome)=@_;
1180: my $items='';
1181: foreach my $item (@$storearr) {
1182: $items.=&escape($item).'&';
1183: }
1184: $items=~s/\&$//;
1185: if (!$udom) {
1186: $udom=$env{'user.domain'};
1187: if (defined(&domain($udom,'primary'))) {
1188: $uhome=&domain($udom,'primary');
1189: } else {
1190: undef($uhome);
1191: }
1192: } else {
1193: if (!$uhome) {
1194: if (defined(&domain($udom,'primary'))) {
1195: $uhome=&domain($udom,'primary');
1196: }
1197: }
1198: }
1199: if ($udom && $uhome && ($uhome ne 'no_host')) {
1200: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1201: my %returnhash;
1202: if ($rep eq '' || $rep =~ /^error: 2 /) {
1203: return %returnhash;
1204: }
1205: my @pairs=split(/\&/,$rep);
1206: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1207: return @pairs;
1208: }
1209: my $i=0;
1210: foreach my $item (@$storearr) {
1211: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1212: $i++;
1213: }
1214: return %returnhash;
1215: } else {
1216: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1217: }
1218: }
1219:
1220: # -------------------------------------------- put items in domain db files
1221:
1222: sub put_dom {
1223: my ($namespace,$storehash,$udom,$uhome)=@_;
1224: if (!$udom) {
1225: $udom=$env{'user.domain'};
1226: if (defined(&domain($udom,'primary'))) {
1227: $uhome=&domain($udom,'primary');
1228: } else {
1229: undef($uhome);
1230: }
1231: } else {
1232: if (!$uhome) {
1233: if (defined(&domain($udom,'primary'))) {
1234: $uhome=&domain($udom,'primary');
1235: }
1236: }
1237: }
1238: if ($udom && $uhome && ($uhome ne 'no_host')) {
1239: my $items='';
1240: foreach my $item (keys(%$storehash)) {
1241: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1242: }
1243: $items=~s/\&$//;
1244: return &reply("putdom:$udom:$namespace:$items",$uhome);
1245: } else {
1246: &logthis("put_dom failed - no homeserver and/or domain");
1247: }
1248: }
1249:
1250: # --------------------- newput for items in db file owned by domainconfig user
1251: sub newput_dom {
1252: my ($namespace,$storehash,$udom) = @_;
1253: my $result;
1254: if (!$udom) {
1255: $udom=$env{'user.domain'};
1256: }
1257: if ($udom) {
1258: my $uname = &get_domainconfiguser($udom);
1259: $result = &newput($namespace,$storehash,$udom,$uname);
1260: }
1261: return $result;
1262: }
1263:
1264: # --------------------- delete for items in db file owned by domainconfig user
1265: sub del_dom {
1266: my ($namespace,$storearr,$udom)=@_;
1267: if (ref($storearr) eq 'ARRAY') {
1268: if (!$udom) {
1269: $udom=$env{'user.domain'};
1270: }
1271: if ($udom) {
1272: my $uname = &get_domainconfiguser($udom);
1273: return &del($namespace,$storearr,$udom,$uname);
1274: }
1275: }
1276: }
1277:
1278: # ----------------------------------construct domainconfig user for a domain
1279: sub get_domainconfiguser {
1280: my ($udom) = @_;
1281: return $udom.'-domainconfig';
1282: }
1283:
1284: sub retrieve_inst_usertypes {
1285: my ($udom) = @_;
1286: my (%returnhash,@order);
1287: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1288: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1289: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1290: %returnhash = %{$domdefs{'inststatustypes'}};
1291: @order = @{$domdefs{'inststatusorder'}};
1292: } else {
1293: if (defined(&domain($udom,'primary'))) {
1294: my $uhome=&domain($udom,'primary');
1295: my $rep=&reply("inst_usertypes:$udom",$uhome);
1296: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1297: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1298: return (\%returnhash,\@order);
1299: }
1300: my ($hashitems,$orderitems) = split(/:/,$rep);
1301: my @pairs=split(/\&/,$hashitems);
1302: foreach my $item (@pairs) {
1303: my ($key,$value)=split(/=/,$item,2);
1304: $key = &unescape($key);
1305: next if ($key =~ /^error: 2 /);
1306: $returnhash{$key}=&thaw_unescape($value);
1307: }
1308: my @esc_order = split(/\&/,$orderitems);
1309: foreach my $item (@esc_order) {
1310: push(@order,&unescape($item));
1311: }
1312: } else {
1313: &logthis("get_dom failed - no primary domain server for $udom");
1314: }
1315: }
1316: return (\%returnhash,\@order);
1317: }
1318:
1319: sub is_domainimage {
1320: my ($url) = @_;
1321: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1322: if (&domain($1) ne '') {
1323: return '1';
1324: }
1325: }
1326: return;
1327: }
1328:
1329: sub inst_directory_query {
1330: my ($srch) = @_;
1331: my $udom = $srch->{'srchdomain'};
1332: my %results;
1333: my $homeserver = &domain($udom,'primary');
1334: my $outcome;
1335: if ($homeserver ne '') {
1336: my $queryid=&reply("querysend:instdirsearch:".
1337: &escape($srch->{'srchby'}).':'.
1338: &escape($srch->{'srchterm'}).':'.
1339: &escape($srch->{'srchtype'}),$homeserver);
1340: my $host=&hostname($homeserver);
1341: if ($queryid !~/^\Q$host\E\_/) {
1342: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1343: return;
1344: }
1345: my $response = &get_query_reply($queryid);
1346: my $maxtries = 5;
1347: my $tries = 1;
1348: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1349: $response = &get_query_reply($queryid);
1350: $tries ++;
1351: }
1352:
1353: if (!&error($response) && $response ne 'refused') {
1354: if ($response eq 'unavailable') {
1355: $outcome = $response;
1356: } else {
1357: $outcome = 'ok';
1358: my @matches = split(/\n/,$response);
1359: foreach my $match (@matches) {
1360: my ($key,$value) = split(/=/,$match);
1361: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1362: }
1363: }
1364: }
1365: }
1366: return ($outcome,%results);
1367: }
1368:
1369: sub usersearch {
1370: my ($srch) = @_;
1371: my $dom = $srch->{'srchdomain'};
1372: my %results;
1373: my %libserv = &all_library();
1374: my $query = 'usersearch';
1375: foreach my $tryserver (keys(%libserv)) {
1376: if (&host_domain($tryserver) eq $dom) {
1377: my $host=&hostname($tryserver);
1378: my $queryid=
1379: &reply("querysend:".&escape($query).':'.
1380: &escape($srch->{'srchby'}).':'.
1381: &escape($srch->{'srchtype'}).':'.
1382: &escape($srch->{'srchterm'}),$tryserver);
1383: if ($queryid !~/^\Q$host\E\_/) {
1384: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1385: next;
1386: }
1387: my $reply = &get_query_reply($queryid);
1388: my $maxtries = 1;
1389: my $tries = 1;
1390: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1391: $reply = &get_query_reply($queryid);
1392: $tries ++;
1393: }
1394: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1395: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1396: } else {
1397: my @matches;
1398: if ($reply =~ /\n/) {
1399: @matches = split(/\n/,$reply);
1400: } else {
1401: @matches = split(/\&/,$reply);
1402: }
1403: foreach my $match (@matches) {
1404: my ($uname,$udom,%userhash);
1405: foreach my $entry (split(/:/,$match)) {
1406: my ($key,$value) =
1407: map {&unescape($_);} split(/=/,$entry);
1408: $userhash{$key} = $value;
1409: if ($key eq 'username') {
1410: $uname = $value;
1411: } elsif ($key eq 'domain') {
1412: $udom = $value;
1413: }
1414: }
1415: $results{$uname.':'.$udom} = \%userhash;
1416: }
1417: }
1418: }
1419: }
1420: return %results;
1421: }
1422:
1423: sub get_instuser {
1424: my ($udom,$uname,$id) = @_;
1425: my $homeserver = &domain($udom,'primary');
1426: my ($outcome,%results);
1427: if ($homeserver ne '') {
1428: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1429: &escape($id).':'.&escape($udom),$homeserver);
1430: my $host=&hostname($homeserver);
1431: if ($queryid !~/^\Q$host\E\_/) {
1432: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1433: return;
1434: }
1435: my $response = &get_query_reply($queryid);
1436: my $maxtries = 5;
1437: my $tries = 1;
1438: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1439: $response = &get_query_reply($queryid);
1440: $tries ++;
1441: }
1442: if (!&error($response) && $response ne 'refused') {
1443: if ($response eq 'unavailable') {
1444: $outcome = $response;
1445: } else {
1446: $outcome = 'ok';
1447: my @matches = split(/\n/,$response);
1448: foreach my $match (@matches) {
1449: my ($key,$value) = split(/=/,$match);
1450: $results{&unescape($key)} = &thaw_unescape($value);
1451: }
1452: }
1453: }
1454: }
1455: my %userinfo;
1456: if (ref($results{$uname}) eq 'HASH') {
1457: %userinfo = %{$results{$uname}};
1458: }
1459: return ($outcome,%userinfo);
1460: }
1461:
1462: sub inst_rulecheck {
1463: my ($udom,$uname,$id,$item,$rules) = @_;
1464: my %returnhash;
1465: if ($udom ne '') {
1466: if (ref($rules) eq 'ARRAY') {
1467: @{$rules} = map {&escape($_);} (@{$rules});
1468: my $rulestr = join(':',@{$rules});
1469: my $homeserver=&domain($udom,'primary');
1470: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1471: my $response;
1472: if ($item eq 'username') {
1473: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1474: ':'.&escape($uname).':'.$rulestr,
1475: $homeserver));
1476: } elsif ($item eq 'id') {
1477: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1478: ':'.&escape($id).':'.$rulestr,
1479: $homeserver));
1480: } elsif ($item eq 'selfcreate') {
1481: $response=&unescape(&reply('instselfcreatecheck:'.
1482: &escape($udom).':'.&escape($uname).
1483: ':'.$rulestr,$homeserver));
1484: }
1485: if ($response ne 'refused') {
1486: my @pairs=split(/\&/,$response);
1487: foreach my $item (@pairs) {
1488: my ($key,$value)=split(/=/,$item,2);
1489: $key = &unescape($key);
1490: next if ($key =~ /^error: 2 /);
1491: $returnhash{$key}=&thaw_unescape($value);
1492: }
1493: }
1494: }
1495: }
1496: }
1497: return %returnhash;
1498: }
1499:
1500: sub inst_userrules {
1501: my ($udom,$check) = @_;
1502: my (%ruleshash,@ruleorder);
1503: if ($udom ne '') {
1504: my $homeserver=&domain($udom,'primary');
1505: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1506: my $response;
1507: if ($check eq 'id') {
1508: $response=&reply('instidrules:'.&escape($udom),
1509: $homeserver);
1510: } elsif ($check eq 'email') {
1511: $response=&reply('instemailrules:'.&escape($udom),
1512: $homeserver);
1513: } else {
1514: $response=&reply('instuserrules:'.&escape($udom),
1515: $homeserver);
1516: }
1517: if (($response ne 'refused') && ($response ne 'error') &&
1518: ($response ne 'unknown_cmd') &&
1519: ($response ne 'no_such_host')) {
1520: my ($hashitems,$orderitems) = split(/:/,$response);
1521: my @pairs=split(/\&/,$hashitems);
1522: foreach my $item (@pairs) {
1523: my ($key,$value)=split(/=/,$item,2);
1524: $key = &unescape($key);
1525: next if ($key =~ /^error: 2 /);
1526: $ruleshash{$key}=&thaw_unescape($value);
1527: }
1528: my @esc_order = split(/\&/,$orderitems);
1529: foreach my $item (@esc_order) {
1530: push(@ruleorder,&unescape($item));
1531: }
1532: }
1533: }
1534: }
1535: return (\%ruleshash,\@ruleorder);
1536: }
1537:
1538: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1539:
1540: sub get_domain_defaults {
1541: my ($domain) = @_;
1542: my $cachetime = 60*60*24;
1543: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1544: if (defined($cached)) {
1545: if (ref($result) eq 'HASH') {
1546: return %{$result};
1547: }
1548: }
1549: my %domdefaults;
1550: my %domconfig =
1551: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1552: 'requestcourses','inststatus',
1553: 'coursedefaults','usersessions'],$domain);
1554: if (ref($domconfig{'defaults'}) eq 'HASH') {
1555: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1556: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1557: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1558: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1559: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1560: } else {
1561: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1562: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1563: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1564: }
1565: if (ref($domconfig{'quotas'}) eq 'HASH') {
1566: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1567: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1568: } else {
1569: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1570: }
1571: my @usertools = ('aboutme','blog','portfolio');
1572: foreach my $item (@usertools) {
1573: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1574: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1575: }
1576: }
1577: }
1578: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1579: foreach my $item ('official','unofficial','community') {
1580: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1581: }
1582: }
1583: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1584: foreach my $item ('inststatustypes','inststatusorder') {
1585: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1586: }
1587: }
1588: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1589: foreach my $item ('canuse_pdfforms') {
1590: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1591: }
1592: }
1593: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1594: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1595: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1596: }
1597: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1598: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1599: }
1600: }
1601: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1602: $cachetime);
1603: return %domdefaults;
1604: }
1605:
1606: # --------------------------------------------------- Assign a key to a student
1607:
1608: sub assign_access_key {
1609: #
1610: # a valid key looks like uname:udom#comments
1611: # comments are being appended
1612: #
1613: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1614: $kdom=
1615: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1616: $knum=
1617: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1618: $cdom=
1619: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1620: $cnum=
1621: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1622: $udom=$env{'user.name'} unless (defined($udom));
1623: $uname=$env{'user.domain'} unless (defined($uname));
1624: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1625: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1626: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1627: # assigned to this person
1628: # - this should not happen,
1629: # unless something went wrong
1630: # the first time around
1631: # ready to assign
1632: $logentry=$1.'; '.$logentry;
1633: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1634: $kdom,$knum) eq 'ok') {
1635: # key now belongs to user
1636: my $envkey='key.'.$cdom.'_'.$cnum;
1637: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1638: &appenv({'environment.'.$envkey => $ckey});
1639: return 'ok';
1640: } else {
1641: return
1642: 'error: Count not permanently assign key, will need to be re-entered later.';
1643: }
1644: } else {
1645: return 'error: Could not assign key, try again later.';
1646: }
1647: } elsif (!$existing{$ckey}) {
1648: # the key does not exist
1649: return 'error: The key does not exist';
1650: } else {
1651: # the key is somebody else's
1652: return 'error: The key is already in use';
1653: }
1654: }
1655:
1656: # ------------------------------------------ put an additional comment on a key
1657:
1658: sub comment_access_key {
1659: #
1660: # a valid key looks like uname:udom#comments
1661: # comments are being appended
1662: #
1663: my ($ckey,$cdom,$cnum,$logentry)=@_;
1664: $cdom=
1665: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1666: $cnum=
1667: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1668: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1669: if ($existing{$ckey}) {
1670: $existing{$ckey}.='; '.$logentry;
1671: # ready to assign
1672: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1673: $cdom,$cnum) eq 'ok') {
1674: return 'ok';
1675: } else {
1676: return 'error: Count not store comment.';
1677: }
1678: } else {
1679: # the key does not exist
1680: return 'error: The key does not exist';
1681: }
1682: }
1683:
1684: # ------------------------------------------------------ Generate a set of keys
1685:
1686: sub generate_access_keys {
1687: my ($number,$cdom,$cnum,$logentry)=@_;
1688: $cdom=
1689: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1690: $cnum=
1691: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1692: unless (&allowed('mky',$cdom)) { return 0; }
1693: unless (($cdom) && ($cnum)) { return 0; }
1694: if ($number>10000) { return 0; }
1695: sleep(2); # make sure don't get same seed twice
1696: srand(time()^($$+($$<<15))); # from "Programming Perl"
1697: my $total=0;
1698: for (my $i=1;$i<=$number;$i++) {
1699: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1700: sprintf("%lx",int(100000*rand)).'-'.
1701: sprintf("%lx",int(100000*rand));
1702: $newkey=~s/1/g/g; # folks mix up 1 and l
1703: $newkey=~s/0/h/g; # and also 0 and O
1704: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1705: if ($existing{$newkey}) {
1706: $i--;
1707: } else {
1708: if (&put('accesskeys',
1709: { $newkey => '# generated '.localtime().
1710: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1711: '; '.$logentry },
1712: $cdom,$cnum) eq 'ok') {
1713: $total++;
1714: }
1715: }
1716: }
1717: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1718: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1719: return $total;
1720: }
1721:
1722: # ------------------------------------------------------- Validate an accesskey
1723:
1724: sub validate_access_key {
1725: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1726: $cdom=
1727: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1728: $cnum=
1729: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1730: $udom=$env{'user.domain'} unless (defined($udom));
1731: $uname=$env{'user.name'} unless (defined($uname));
1732: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1733: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1734: }
1735:
1736: # ------------------------------------- Find the section of student in a course
1737: sub devalidate_getsection_cache {
1738: my ($udom,$unam,$courseid)=@_;
1739: my $hashid="$udom:$unam:$courseid";
1740: &devalidate_cache_new('getsection',$hashid);
1741: }
1742:
1743: sub courseid_to_courseurl {
1744: my ($courseid) = @_;
1745: #already url style courseid
1746: return $courseid if ($courseid =~ m{^/});
1747:
1748: if (exists($env{'course.'.$courseid.'.num'})) {
1749: my $cnum = $env{'course.'.$courseid.'.num'};
1750: my $cdom = $env{'course.'.$courseid.'.domain'};
1751: return "/$cdom/$cnum";
1752: }
1753:
1754: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1755: if (exists($courseinfo{'num'})) {
1756: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1757: }
1758:
1759: return undef;
1760: }
1761:
1762: sub getsection {
1763: my ($udom,$unam,$courseid)=@_;
1764: my $cachetime=1800;
1765:
1766: my $hashid="$udom:$unam:$courseid";
1767: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1768: if (defined($cached)) { return $result; }
1769:
1770: my %Pending;
1771: my %Expired;
1772: #
1773: # Each role can either have not started yet (pending), be active,
1774: # or have expired.
1775: #
1776: # If there is an active role, we are done.
1777: #
1778: # If there is more than one role which has not started yet,
1779: # choose the one which will start sooner
1780: # If there is one role which has not started yet, return it.
1781: #
1782: # If there is more than one expired role, choose the one which ended last.
1783: # If there is a role which has expired, return it.
1784: #
1785: $courseid = &courseid_to_courseurl($courseid);
1786: my $extra = &freeze_escape({'skipcheck' => 1});
1787: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
1788: foreach my $key (keys(%roleshash)) {
1789: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1790: my $section=$1;
1791: if ($key eq $courseid.'_st') { $section=''; }
1792: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1793: my $now=time;
1794: if (defined($end) && $end && ($now > $end)) {
1795: $Expired{$end}=$section;
1796: next;
1797: }
1798: if (defined($start) && $start && ($now < $start)) {
1799: $Pending{$start}=$section;
1800: next;
1801: }
1802: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1803: }
1804: #
1805: # Presumedly there will be few matching roles from the above
1806: # loop and the sorting time will be negligible.
1807: if (scalar(keys(%Pending))) {
1808: my ($time) = sort {$a <=> $b} keys(%Pending);
1809: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1810: }
1811: if (scalar(keys(%Expired))) {
1812: my @sorted = sort {$a <=> $b} keys(%Expired);
1813: my $time = pop(@sorted);
1814: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1815: }
1816: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1817: }
1818:
1819: sub save_cache {
1820: &purge_remembered();
1821: #&Apache::loncommon::validate_page();
1822: undef(%env);
1823: undef($env_loaded);
1824: }
1825:
1826: my $to_remember=-1;
1827: my %remembered;
1828: my %accessed;
1829: my $kicks=0;
1830: my $hits=0;
1831: sub make_key {
1832: my ($name,$id) = @_;
1833: if (length($id) > 65
1834: && length(&escape($id)) > 200) {
1835: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1836: }
1837: return &escape($name.':'.$id);
1838: }
1839:
1840: sub devalidate_cache_new {
1841: my ($name,$id,$debug) = @_;
1842: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1843: $id=&make_key($name,$id);
1844: $memcache->delete($id);
1845: delete($remembered{$id});
1846: delete($accessed{$id});
1847: }
1848:
1849: sub is_cached_new {
1850: my ($name,$id,$debug) = @_;
1851: $id=&make_key($name,$id);
1852: if (exists($remembered{$id})) {
1853: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1854: $accessed{$id}=[&gettimeofday()];
1855: $hits++;
1856: return ($remembered{$id},1);
1857: }
1858: my $value = $memcache->get($id);
1859: if (!(defined($value))) {
1860: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1861: return (undef,undef);
1862: }
1863: if ($value eq '__undef__') {
1864: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1865: $value=undef;
1866: }
1867: &make_room($id,$value,$debug);
1868: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1869: return ($value,1);
1870: }
1871:
1872: sub do_cache_new {
1873: my ($name,$id,$value,$time,$debug) = @_;
1874: $id=&make_key($name,$id);
1875: my $setvalue=$value;
1876: if (!defined($setvalue)) {
1877: $setvalue='__undef__';
1878: }
1879: if (!defined($time) ) {
1880: $time=600;
1881: }
1882: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1883: my $result = $memcache->set($id,$setvalue,$time);
1884: if (! $result) {
1885: &logthis("caching of id -> $id failed");
1886: $memcache->disconnect_all();
1887: }
1888: # need to make a copy of $value
1889: &make_room($id,$value,$debug);
1890: return $value;
1891: }
1892:
1893: sub make_room {
1894: my ($id,$value,$debug)=@_;
1895:
1896: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1897: : $value;
1898: if ($to_remember<0) { return; }
1899: $accessed{$id}=[&gettimeofday()];
1900: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1901: my $to_kick;
1902: my $max_time=0;
1903: foreach my $other (keys(%accessed)) {
1904: if (&tv_interval($accessed{$other}) > $max_time) {
1905: $to_kick=$other;
1906: $max_time=&tv_interval($accessed{$other});
1907: }
1908: }
1909: delete($remembered{$to_kick});
1910: delete($accessed{$to_kick});
1911: $kicks++;
1912: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1913: return;
1914: }
1915:
1916: sub purge_remembered {
1917: #&logthis("Tossing ".scalar(keys(%remembered)));
1918: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1919: undef(%remembered);
1920: undef(%accessed);
1921: }
1922: # ------------------------------------- Read an entry from a user's environment
1923:
1924: sub userenvironment {
1925: my ($udom,$unam,@what)=@_;
1926: my $items;
1927: foreach my $item (@what) {
1928: $items.=&escape($item).'&';
1929: }
1930: $items=~s/\&$//;
1931: my %returnhash=();
1932: my $uhome = &homeserver($unam,$udom);
1933: unless ($uhome eq 'no_host') {
1934: my @answer=split(/\&/,
1935: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1936: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
1937: return %returnhash;
1938: }
1939: my $i;
1940: for ($i=0;$i<=$#what;$i++) {
1941: $returnhash{$what[$i]}=&unescape($answer[$i]);
1942: }
1943: }
1944: return %returnhash;
1945: }
1946:
1947: # ---------------------------------------------------------- Get a studentphoto
1948: sub studentphoto {
1949: my ($udom,$unam,$ext) = @_;
1950: my $home=&Apache::lonnet::homeserver($unam,$udom);
1951: if (defined($env{'request.course.id'})) {
1952: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1953: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1954: return(&retrievestudentphoto($udom,$unam,$ext));
1955: } else {
1956: my ($result,$perm_reqd)=
1957: &Apache::lonnet::auto_photo_permission($unam,$udom);
1958: if ($result eq 'ok') {
1959: if (!($perm_reqd eq 'yes')) {
1960: return(&retrievestudentphoto($udom,$unam,$ext));
1961: }
1962: }
1963: }
1964: }
1965: } else {
1966: my ($result,$perm_reqd) =
1967: &Apache::lonnet::auto_photo_permission($unam,$udom);
1968: if ($result eq 'ok') {
1969: if (!($perm_reqd eq 'yes')) {
1970: return(&retrievestudentphoto($udom,$unam,$ext));
1971: }
1972: }
1973: }
1974: return '/adm/lonKaputt/lonlogo_broken.gif';
1975: }
1976:
1977: sub retrievestudentphoto {
1978: my ($udom,$unam,$ext,$type) = @_;
1979: my $home=&Apache::lonnet::homeserver($unam,$udom);
1980: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1981: if ($ret eq 'ok') {
1982: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1983: if ($type eq 'thumbnail') {
1984: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1985: }
1986: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1987: return $tokenurl;
1988: } else {
1989: if ($type eq 'thumbnail') {
1990: return '/adm/lonKaputt/genericstudent_tn.gif';
1991: } else {
1992: return '/adm/lonKaputt/lonlogo_broken.gif';
1993: }
1994: }
1995: }
1996:
1997: # -------------------------------------------------------------------- New chat
1998:
1999: sub chatsend {
2000: my ($newentry,$anon,$group)=@_;
2001: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2002: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2003: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2004: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2005: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2006: &escape($newentry)).':'.$group,$chome);
2007: }
2008:
2009: # ------------------------------------------ Find current version of a resource
2010:
2011: sub getversion {
2012: my $fname=&clutter(shift);
2013: unless ($fname=~/^\/res\//) { return -1; }
2014: return ¤tversion(&filelocation('',$fname));
2015: }
2016:
2017: sub currentversion {
2018: my $fname=shift;
2019: my $author=$fname;
2020: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2021: my ($udom,$uname)=split(/\//,$author);
2022: my $home=&homeserver($uname,$udom);
2023: if ($home eq 'no_host') {
2024: return -1;
2025: }
2026: my $answer=&reply("currentversion:$fname",$home);
2027: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2028: return -1;
2029: }
2030: return $answer;
2031: }
2032:
2033: #
2034: # Return special version number of resource if set by override, empty otherwise
2035: #
2036: sub usedversion {
2037: my $fname=shift;
2038: unless ($fname) { $fname=$env{'request.uri'}; }
2039: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2040: if ($urlversion) { return $urlversion; }
2041: return '';
2042: }
2043:
2044: # ----------------------------- Subscribe to a resource, return URL if possible
2045:
2046: sub subscribe {
2047: my $fname=shift;
2048: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2049: $fname=~s/[\n\r]//g;
2050: my $author=$fname;
2051: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2052: my ($udom,$uname)=split(/\//,$author);
2053: my $home=homeserver($uname,$udom);
2054: if ($home eq 'no_host') {
2055: return 'not_found';
2056: }
2057: my $answer=reply("sub:$fname",$home);
2058: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2059: $answer.=' by '.$home;
2060: }
2061: return $answer;
2062: }
2063:
2064: # -------------------------------------------------------------- Replicate file
2065:
2066: sub repcopy {
2067: my $filename=shift;
2068: $filename=~s/\/+/\//g;
2069: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
2070: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
2071: if ($filename=~m|^/home/httpd/html/userfiles/| or
2072: $filename=~m -^/*(uploaded|editupload)/-) {
2073: return &repcopy_userfile($filename);
2074: }
2075: $filename=~s/[\n\r]//g;
2076: my $transname="$filename.in.transfer";
2077: # FIXME: this should flock
2078: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2079: my $remoteurl=subscribe($filename);
2080: if ($remoteurl =~ /^con_lost by/) {
2081: &logthis("Subscribe returned $remoteurl: $filename");
2082: return 'unavailable';
2083: } elsif ($remoteurl eq 'not_found') {
2084: #&logthis("Subscribe returned not_found: $filename");
2085: return 'not_found';
2086: } elsif ($remoteurl =~ /^rejected by/) {
2087: &logthis("Subscribe returned $remoteurl: $filename");
2088: return 'forbidden';
2089: } elsif ($remoteurl eq 'directory') {
2090: return 'ok';
2091: } else {
2092: my $author=$filename;
2093: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2094: my ($udom,$uname)=split(/\//,$author);
2095: my $home=homeserver($uname,$udom);
2096: unless ($home eq $perlvar{'lonHostID'}) {
2097: my @parts=split(/\//,$filename);
2098: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2099: if ($path ne "$perlvar{'lonDocRoot'}/res") {
2100: &logthis("Malconfiguration for replication: $filename");
2101: return 'bad_request';
2102: }
2103: my $count;
2104: for ($count=5;$count<$#parts;$count++) {
2105: $path.="/$parts[$count]";
2106: if ((-e $path)!=1) {
2107: mkdir($path,0777);
2108: }
2109: }
2110: my $ua=new LWP::UserAgent;
2111: my $request=new HTTP::Request('GET',"$remoteurl");
2112: my $response=$ua->request($request,$transname);
2113: if ($response->is_error()) {
2114: unlink($transname);
2115: my $message=$response->status_line;
2116: &logthis("<font color=\"blue\">WARNING:"
2117: ." LWP get: $message: $filename</font>");
2118: return 'unavailable';
2119: } else {
2120: if ($remoteurl!~/\.meta$/) {
2121: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2122: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2123: if ($mresponse->is_error()) {
2124: unlink($filename.'.meta');
2125: &logthis(
2126: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2127: }
2128: }
2129: rename($transname,$filename);
2130: return 'ok';
2131: }
2132: }
2133: }
2134: }
2135:
2136: # ------------------------------------------------ Get server side include body
2137: sub ssi_body {
2138: my ($filelink,%form)=@_;
2139: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2140: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2141: }
2142: my $output='';
2143: my $response;
2144: if ($filelink=~/^https?\:/) {
2145: ($output,$response)=&externalssi($filelink);
2146: } else {
2147: $filelink .= $filelink=~/\?/ ? '&' : '?';
2148: $filelink .= 'inhibitmenu=yes';
2149: ($output,$response)=&ssi($filelink,%form);
2150: }
2151: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2152: $output=~s/^.*?\<body[^\>]*\>//si;
2153: $output=~s/\<\/body\s*\>.*?$//si;
2154: if (wantarray) {
2155: return ($output, $response);
2156: } else {
2157: return $output;
2158: }
2159: }
2160:
2161: # --------------------------------------------------------- Server Side Include
2162:
2163: sub absolute_url {
2164: my ($host_name) = @_;
2165: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2166: if ($host_name eq '') {
2167: $host_name = $ENV{'SERVER_NAME'};
2168: }
2169: return $protocol.$host_name;
2170: }
2171:
2172: #
2173: # Server side include.
2174: # Parameters:
2175: # fn Possibly encrypted resource name/id.
2176: # form Hash that describes how the rendering should be done
2177: # and other things.
2178: # Returns:
2179: # Scalar context: The content of the response.
2180: # Array context: 2 element list of the content and the full response object.
2181: #
2182: sub ssi {
2183:
2184: my ($fn,%form)=@_;
2185: my $ua=new LWP::UserAgent;
2186: my $request;
2187:
2188: $form{'no_update_last_known'}=1;
2189: &Apache::lonenc::check_encrypt(\$fn);
2190: if (%form) {
2191: $request=new HTTP::Request('POST',&absolute_url().$fn);
2192: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2193: } else {
2194: $request=new HTTP::Request('GET',&absolute_url().$fn);
2195: }
2196:
2197: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2198: my $response=$ua->request($request);
2199:
2200: if (wantarray) {
2201: return ($response->content, $response);
2202: } else {
2203: return $response->content;
2204: }
2205: }
2206:
2207: sub externalssi {
2208: my ($url)=@_;
2209: my $ua=new LWP::UserAgent;
2210: my $request=new HTTP::Request('GET',$url);
2211: my $response=$ua->request($request);
2212: if (wantarray) {
2213: return ($response->content, $response);
2214: } else {
2215: return $response->content;
2216: }
2217: }
2218:
2219: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2220:
2221: sub allowuploaded {
2222: my ($srcurl,$url)=@_;
2223: $url=&clutter(&declutter($url));
2224: my $dir=$url;
2225: $dir=~s/\/[^\/]+$//;
2226: my %httpref=();
2227: my $httpurl=&hreflocation('',$url);
2228: $httpref{'httpref.'.$httpurl}=$srcurl;
2229: &Apache::lonnet::appenv(\%httpref);
2230: }
2231:
2232: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2233: # input: action, courseID, current domain, intended
2234: # path to file, source of file, instruction to parse file for objects,
2235: # ref to hash for embedded objects,
2236: # ref to hash for codebase of java objects.
2237: # reference to scalar to accommodate mime type determined
2238: # from File::MMagic if $parser = parse.
2239: #
2240: # output: url to file (if action was uploaddoc),
2241: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2242: #
2243: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2244: # course.
2245: #
2246: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2247: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2248: # course's home server.
2249: #
2250: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2251: # be copied from $source (current location) to
2252: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2253: # and will then be copied to
2254: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2255: # course's home server.
2256: #
2257: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2258: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2259: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2260: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2261: # in course's home server.
2262: #
2263:
2264: sub process_coursefile {
2265: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2266: $mimetype)=@_;
2267: my $fetchresult;
2268: my $home=&homeserver($docuname,$docudom);
2269: if ($action eq 'propagate') {
2270: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2271: $home);
2272: } else {
2273: my $fpath = '';
2274: my $fname = $file;
2275: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2276: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2277: my $filepath = &build_filepath($fpath);
2278: if ($action eq 'copy') {
2279: if ($source eq '') {
2280: $fetchresult = 'no source file';
2281: return $fetchresult;
2282: } else {
2283: my $destination = $filepath.'/'.$fname;
2284: rename($source,$destination);
2285: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2286: $home);
2287: }
2288: } elsif ($action eq 'uploaddoc') {
2289: open(my $fh,'>'.$filepath.'/'.$fname);
2290: print $fh $env{'form.'.$source};
2291: close($fh);
2292: if ($parser eq 'parse') {
2293: my $mm = new File::MMagic;
2294: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2295: if ($type eq 'text/html') {
2296: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2297: unless ($parse_result eq 'ok') {
2298: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2299: }
2300: }
2301: if (ref($mimetype)) {
2302: $$mimetype = $type;
2303: }
2304: }
2305: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2306: $home);
2307: if ($fetchresult eq 'ok') {
2308: return '/uploaded/'.$fpath.'/'.$fname;
2309: } else {
2310: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2311: ' to host '.$home.': '.$fetchresult);
2312: return '/adm/notfound.html';
2313: }
2314: }
2315: }
2316: unless ( $fetchresult eq 'ok') {
2317: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2318: ' to host '.$home.': '.$fetchresult);
2319: }
2320: return $fetchresult;
2321: }
2322:
2323: sub build_filepath {
2324: my ($fpath) = @_;
2325: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2326: unless ($fpath eq '') {
2327: my @parts=split('/',$fpath);
2328: foreach my $part (@parts) {
2329: $filepath.= '/'.$part;
2330: if ((-e $filepath)!=1) {
2331: mkdir($filepath,0777);
2332: }
2333: }
2334: }
2335: return $filepath;
2336: }
2337:
2338: sub store_edited_file {
2339: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2340: my $file = $primary_url;
2341: $file =~ s#^/uploaded/$docudom/$docuname/##;
2342: my $fpath = '';
2343: my $fname = $file;
2344: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2345: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2346: my $filepath = &build_filepath($fpath);
2347: open(my $fh,'>'.$filepath.'/'.$fname);
2348: print $fh $content;
2349: close($fh);
2350: my $home=&homeserver($docuname,$docudom);
2351: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2352: $home);
2353: if ($$fetchresult eq 'ok') {
2354: return '/uploaded/'.$fpath.'/'.$fname;
2355: } else {
2356: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2357: ' to host '.$home.': '.$$fetchresult);
2358: return '/adm/notfound.html';
2359: }
2360: }
2361:
2362: sub clean_filename {
2363: my ($fname,$args)=@_;
2364: # Replace Windows backslashes by forward slashes
2365: $fname=~s/\\/\//g;
2366: if (!$args->{'keep_path'}) {
2367: # Get rid of everything but the actual filename
2368: $fname=~s/^.*\/([^\/]+)$/$1/;
2369: }
2370: # Replace spaces by underscores
2371: $fname=~s/\s+/\_/g;
2372: # Replace all other weird characters by nothing
2373: $fname=~s{[^/\w\.\-]}{}g;
2374: # Replace all .\d. sequences with _\d. so they no longer look like version
2375: # numbers
2376: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2377: return $fname;
2378: }
2379: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2380: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2381: # image with the same aspect ratio as the original, but with dimensions which do
2382: # not exceed $resizewidth and $resizeheight.
2383:
2384: sub resizeImage {
2385: my ($img_path,$resizewidth,$resizeheight) = @_;
2386: my $ima = Image::Magick->new;
2387: my $resized;
2388: if (-e $img_path) {
2389: $ima->Read($img_path);
2390: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2391: my $width = $ima->Get('width');
2392: my $height = $ima->Get('height');
2393: if ($width > $resizewidth) {
2394: my $factor = $width/$resizewidth;
2395: my $newheight = $height/$factor;
2396: $ima->Scale(width=>$resizewidth,height=>$newheight);
2397: $resized = 1;
2398: }
2399: }
2400: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2401: my $width = $ima->Get('width');
2402: my $height = $ima->Get('height');
2403: if ($height > $resizeheight) {
2404: my $factor = $height/$resizeheight;
2405: my $newwidth = $width/$factor;
2406: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2407: $resized = 1;
2408: }
2409: }
2410: if ($resized) {
2411: $ima->Write($img_path);
2412: }
2413: }
2414: return;
2415: }
2416:
2417: # --------------- Take an uploaded file and put it into the userfiles directory
2418: # input: $formname - the contents of the file are in $env{"form.$formname"}
2419: # the desired filename is in $env{"form.$formname.filename"}
2420: # $context - possible values: coursedoc, existingfile, overwrite,
2421: # canceloverwrite, or ''.
2422: # if 'coursedoc': upload to the current course
2423: # if 'existingfile': write file to tmp/overwrites directory
2424: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2425: # $context is passed as argument to &finishuserfileupload
2426: # $subdir - directory in userfile to store the file into
2427: # $parser - instruction to parse file for objects ($parser = parse)
2428: # $allfiles - reference to hash for embedded objects
2429: # $codebase - reference to hash for codebase of java objects
2430: # $desuname - username for permanent storage of uploaded file
2431: # $dsetudom - domain for permanaent storage of uploaded file
2432: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2433: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2434: # $resizewidth - width (pixels) to which to resize uploaded image
2435: # $resizeheight - height (pixels) to which to resize uploaded image
2436: # $mimetype - reference to scalar to accommodate mime type determined
2437: # from File::MMagic if $parser = parse.
2438: #
2439: # output: url of file in userspace, or error: <message>
2440: # or /adm/notfound.html if failure to upload occurse
2441:
2442: sub userfileupload {
2443: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2444: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2445: if (!defined($subdir)) { $subdir='unknown'; }
2446: my $fname=$env{'form.'.$formname.'.filename'};
2447: $fname=&clean_filename($fname);
2448: # See if there is anything left
2449: unless ($fname) { return 'error: no uploaded file'; }
2450: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2451: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2452: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2453: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2454: my $now = time;
2455: my $filepath;
2456: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2457: $filepath = 'tmp/helprequests/'.$now;
2458: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2459: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2460: '_'.$env{'user.domain'}.'/pending';
2461: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2462: my ($docuname,$docudom);
2463: if ($destudom) {
2464: $docudom = $destudom;
2465: } else {
2466: $docudom = $env{'user.domain'};
2467: }
2468: if ($destuname) {
2469: $docuname = $destuname;
2470: } else {
2471: $docuname = $env{'user.name'};
2472: }
2473: if (exists($env{'form.group'})) {
2474: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2475: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2476: }
2477: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2478: if ($context eq 'canceloverwrite') {
2479: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2480: if (-e $tempfile) {
2481: my @info = stat($tempfile);
2482: if ($info[9] eq $env{'form.timestamp'}) {
2483: unlink($tempfile);
2484: }
2485: }
2486: return;
2487: }
2488: }
2489: # Create the directory if not present
2490: my @parts=split(/\//,$filepath);
2491: my $fullpath = $perlvar{'lonDaemons'};
2492: for (my $i=0;$i<@parts;$i++) {
2493: $fullpath .= '/'.$parts[$i];
2494: if ((-e $fullpath)!=1) {
2495: mkdir($fullpath,0777);
2496: }
2497: }
2498: open(my $fh,'>'.$fullpath.'/'.$fname);
2499: print $fh $env{'form.'.$formname};
2500: close($fh);
2501: if ($context eq 'existingfile') {
2502: my @info = stat($fullpath.'/'.$fname);
2503: return ($fullpath.'/'.$fname,$info[9]);
2504: } else {
2505: return $fullpath.'/'.$fname;
2506: }
2507: }
2508: if ($subdir eq 'scantron') {
2509: $fname = 'scantron_orig_'.$fname;
2510: } else {
2511: $fname="$subdir/$fname";
2512: }
2513: if ($context eq 'coursedoc') {
2514: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2515: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2516: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2517: return &finishuserfileupload($docuname,$docudom,
2518: $formname,$fname,$parser,$allfiles,
2519: $codebase,$thumbwidth,$thumbheight,
2520: $resizewidth,$resizeheight,$context,$mimetype);
2521: } else {
2522: $fname=$env{'form.folder'}.'/'.$fname;
2523: return &process_coursefile('uploaddoc',$docuname,$docudom,
2524: $fname,$formname,$parser,
2525: $allfiles,$codebase,$mimetype);
2526: }
2527: } elsif (defined($destuname)) {
2528: my $docuname=$destuname;
2529: my $docudom=$destudom;
2530: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2531: $parser,$allfiles,$codebase,
2532: $thumbwidth,$thumbheight,
2533: $resizewidth,$resizeheight,$context,$mimetype);
2534: } else {
2535: my $docuname=$env{'user.name'};
2536: my $docudom=$env{'user.domain'};
2537: if (exists($env{'form.group'})) {
2538: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2539: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2540: }
2541: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2542: $parser,$allfiles,$codebase,
2543: $thumbwidth,$thumbheight,
2544: $resizewidth,$resizeheight,$context,$mimetype);
2545: }
2546: }
2547:
2548: sub finishuserfileupload {
2549: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2550: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2551: my $path=$docudom.'/'.$docuname.'/';
2552: my $filepath=$perlvar{'lonDocRoot'};
2553:
2554: my ($fnamepath,$file,$fetchthumb);
2555: $file=$fname;
2556: if ($fname=~m|/|) {
2557: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2558: $path.=$fnamepath.'/';
2559: }
2560: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2561: my $count;
2562: for ($count=4;$count<=$#parts;$count++) {
2563: $filepath.="/$parts[$count]";
2564: if ((-e $filepath)!=1) {
2565: mkdir($filepath,0777);
2566: }
2567: }
2568:
2569: # Save the file
2570: {
2571: if (!open(FH,'>'.$filepath.'/'.$file)) {
2572: &logthis('Failed to create '.$filepath.'/'.$file);
2573: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2574: return '/adm/notfound.html';
2575: }
2576: if ($context eq 'overwrite') {
2577: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2578: my $target = $filepath.'/'.$file;
2579: if (-e $source) {
2580: my @info = stat($source);
2581: if ($info[9] eq $env{'form.timestamp'}) {
2582: unless (&File::Copy::move($source,$target)) {
2583: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2584: return "Moving from $source failed";
2585: }
2586: } else {
2587: return "Temporary file: $source had unexpected date/time for last modification";
2588: }
2589: } else {
2590: return "Temporary file: $source missing";
2591: }
2592: } elsif (!print FH ($env{'form.'.$formname})) {
2593: &logthis('Failed to write to '.$filepath.'/'.$file);
2594: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2595: return '/adm/notfound.html';
2596: }
2597: close(FH);
2598: if ($resizewidth && $resizeheight) {
2599: my $mm = new File::MMagic;
2600: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2601: if ($mime_type =~ m{^image/}) {
2602: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2603: }
2604: }
2605: }
2606: if ($parser eq 'parse') {
2607: my $mm = new File::MMagic;
2608: my $type = $mm->checktype_filename($filepath.'/'.$file);
2609: if ($type eq 'text/html') {
2610: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2611: $allfiles,$codebase);
2612: unless ($parse_result eq 'ok') {
2613: &logthis('Failed to parse '.$filepath.$file.
2614: ' for embedded media: '.$parse_result);
2615: }
2616: }
2617: if (ref($mimetype)) {
2618: $$mimetype = $type;
2619: }
2620: }
2621: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2622: my $input = $filepath.'/'.$file;
2623: my $output = $filepath.'/'.'tn-'.$file;
2624: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2625: system("convert -sample $thumbsize $input $output");
2626: if (-e $filepath.'/'.'tn-'.$file) {
2627: $fetchthumb = 1;
2628: }
2629: }
2630:
2631: # Notify homeserver to grep it
2632: #
2633: my $docuhome=&homeserver($docuname,$docudom);
2634: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2635: if ($fetchresult eq 'ok') {
2636: if ($fetchthumb) {
2637: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2638: if ($thumbresult ne 'ok') {
2639: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2640: $docuhome.': '.$thumbresult);
2641: }
2642: }
2643: #
2644: # Return the URL to it
2645: return '/uploaded/'.$path.$file;
2646: } else {
2647: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2648: ': '.$fetchresult);
2649: return '/adm/notfound.html';
2650: }
2651: }
2652:
2653: sub extract_embedded_items {
2654: my ($fullpath,$allfiles,$codebase,$content) = @_;
2655: my @state = ();
2656: my %javafiles = (
2657: codebase => '',
2658: code => '',
2659: archive => ''
2660: );
2661: my %mediafiles = (
2662: src => '',
2663: movie => '',
2664: );
2665: my $p;
2666: if ($content) {
2667: $p = HTML::LCParser->new($content);
2668: } else {
2669: $p = HTML::LCParser->new($fullpath);
2670: }
2671: while (my $t=$p->get_token()) {
2672: if ($t->[0] eq 'S') {
2673: my ($tagname, $attr) = ($t->[1],$t->[2]);
2674: push(@state, $tagname);
2675: if (lc($tagname) eq 'allow') {
2676: &add_filetype($allfiles,$attr->{'src'},'src');
2677: }
2678: if (lc($tagname) eq 'img') {
2679: &add_filetype($allfiles,$attr->{'src'},'src');
2680: }
2681: if (lc($tagname) eq 'a') {
2682: &add_filetype($allfiles,$attr->{'href'},'href');
2683: }
2684: if (lc($tagname) eq 'script') {
2685: if ($attr->{'archive'} =~ /\.jar$/i) {
2686: &add_filetype($allfiles,$attr->{'archive'},'archive');
2687: } else {
2688: &add_filetype($allfiles,$attr->{'src'},'src');
2689: }
2690: }
2691: if (lc($tagname) eq 'link') {
2692: if (lc($attr->{'rel'}) eq 'stylesheet') {
2693: &add_filetype($allfiles,$attr->{'href'},'href');
2694: }
2695: }
2696: if (lc($tagname) eq 'object' ||
2697: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2698: foreach my $item (keys(%javafiles)) {
2699: $javafiles{$item} = '';
2700: }
2701: }
2702: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2703: my $name = lc($attr->{'name'});
2704: foreach my $item (keys(%javafiles)) {
2705: if ($name eq $item) {
2706: $javafiles{$item} = $attr->{'value'};
2707: last;
2708: }
2709: }
2710: foreach my $item (keys(%mediafiles)) {
2711: if ($name eq $item) {
2712: &add_filetype($allfiles, $attr->{'value'}, 'value');
2713: last;
2714: }
2715: }
2716: }
2717: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2718: foreach my $item (keys(%javafiles)) {
2719: if ($attr->{$item}) {
2720: $javafiles{$item} = $attr->{$item};
2721: last;
2722: }
2723: }
2724: foreach my $item (keys(%mediafiles)) {
2725: if ($attr->{$item}) {
2726: &add_filetype($allfiles,$attr->{$item},$item);
2727: last;
2728: }
2729: }
2730: }
2731: } elsif ($t->[0] eq 'E') {
2732: my ($tagname) = ($t->[1]);
2733: if ($javafiles{'codebase'} ne '') {
2734: $javafiles{'codebase'} .= '/';
2735: }
2736: if (lc($tagname) eq 'applet' ||
2737: lc($tagname) eq 'object' ||
2738: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2739: ) {
2740: foreach my $item (keys(%javafiles)) {
2741: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2742: my $file=$javafiles{'codebase'}.$javafiles{$item};
2743: &add_filetype($allfiles,$file,$item);
2744: }
2745: }
2746: }
2747: pop @state;
2748: }
2749: }
2750: return 'ok';
2751: }
2752:
2753: sub add_filetype {
2754: my ($allfiles,$file,$type)=@_;
2755: if (exists($allfiles->{$file})) {
2756: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2757: push(@{$allfiles->{$file}}, &escape($type));
2758: }
2759: } else {
2760: @{$allfiles->{$file}} = (&escape($type));
2761: }
2762: }
2763:
2764: sub removeuploadedurl {
2765: my ($url)=@_;
2766: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2767: return &removeuserfile($uname,$udom,$fname);
2768: }
2769:
2770: sub removeuserfile {
2771: my ($docuname,$docudom,$fname)=@_;
2772: my $home=&homeserver($docuname,$docudom);
2773: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2774: if ($result eq 'ok') {
2775: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2776: my $metafile = $fname.'.meta';
2777: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2778: my $url = "/uploaded/$docudom/$docuname/$fname";
2779: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2780: my $sqlresult =
2781: &update_portfolio_table($docuname,$docudom,$file,
2782: 'portfolio_metadata',$group,
2783: 'delete');
2784: }
2785: }
2786: return $result;
2787: }
2788:
2789: sub mkdiruserfile {
2790: my ($docuname,$docudom,$dir)=@_;
2791: my $home=&homeserver($docuname,$docudom);
2792: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2793: }
2794:
2795: sub renameuserfile {
2796: my ($docuname,$docudom,$old,$new)=@_;
2797: my $home=&homeserver($docuname,$docudom);
2798: my $result = &reply("renameuserfile:$docudom:$docuname:".
2799: &escape("$old").':'.&escape("$new"),$home);
2800: if ($result eq 'ok') {
2801: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2802: my $oldmeta = $old.'.meta';
2803: my $newmeta = $new.'.meta';
2804: my $metaresult =
2805: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2806: my $url = "/uploaded/$docudom/$docuname/$old";
2807: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2808: my $sqlresult =
2809: &update_portfolio_table($docuname,$docudom,$file,
2810: 'portfolio_metadata',$group,
2811: 'delete');
2812: }
2813: }
2814: return $result;
2815: }
2816:
2817: # ------------------------------------------------------------------------- Log
2818:
2819: sub log {
2820: my ($dom,$nam,$hom,$what)=@_;
2821: return critical("log:$dom:$nam:$what",$hom);
2822: }
2823:
2824: # ------------------------------------------------------------------ Course Log
2825: #
2826: # This routine flushes several buffers of non-mission-critical nature
2827: #
2828:
2829: sub flushcourselogs {
2830: &logthis('Flushing log buffers');
2831: #
2832: # course logs
2833: # This is a log of all transactions in a course, which can be used
2834: # for data mining purposes
2835: #
2836: # It also collects the courseid database, which lists last transaction
2837: # times and course titles for all courseids
2838: #
2839: my %courseidbuffer=();
2840: foreach my $crsid (keys(%courselogs)) {
2841: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2842: &escape($courselogs{$crsid}),
2843: $coursehombuf{$crsid}) eq 'ok') {
2844: delete $courselogs{$crsid};
2845: } else {
2846: &logthis('Failed to flush log buffer for '.$crsid);
2847: if (length($courselogs{$crsid})>40000) {
2848: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2849: " exceeded maximum size, deleting.</font>");
2850: delete $courselogs{$crsid};
2851: }
2852: }
2853: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2854: 'description' => $coursedescrbuf{$crsid},
2855: 'inst_code' => $courseinstcodebuf{$crsid},
2856: 'type' => $coursetypebuf{$crsid},
2857: 'owner' => $courseownerbuf{$crsid},
2858: };
2859: }
2860: #
2861: # Write course id database (reverse lookup) to homeserver of courses
2862: # Is used in pickcourse
2863: #
2864: foreach my $crs_home (keys(%courseidbuffer)) {
2865: my $response = &courseidput(&host_domain($crs_home),
2866: $courseidbuffer{$crs_home},
2867: $crs_home,'timeonly');
2868: }
2869: #
2870: # File accesses
2871: # Writes to the dynamic metadata of resources to get hit counts, etc.
2872: #
2873: foreach my $entry (keys(%accesshash)) {
2874: if ($entry =~ /___count$/) {
2875: my ($dom,$name);
2876: ($dom,$name,undef)=
2877: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2878: if (! defined($dom) || $dom eq '' ||
2879: ! defined($name) || $name eq '') {
2880: my $cid = $env{'request.course.id'};
2881: $dom = $env{'request.'.$cid.'.domain'};
2882: $name = $env{'request.'.$cid.'.num'};
2883: }
2884: my $value = $accesshash{$entry};
2885: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2886: my %temphash=($url => $value);
2887: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2888: if ($result eq 'ok') {
2889: delete $accesshash{$entry};
2890: } elsif ($result eq 'unknown_cmd') {
2891: # Target server has old code running on it.
2892: my %temphash=($entry => $value);
2893: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2894: delete $accesshash{$entry};
2895: }
2896: }
2897: } else {
2898: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2899: my %temphash=($entry => $accesshash{$entry});
2900: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2901: delete $accesshash{$entry};
2902: }
2903: }
2904: }
2905: #
2906: # Roles
2907: # Reverse lookup of user roles for course faculty/staff and co-authorship
2908: #
2909: foreach my $entry (keys(%userrolehash)) {
2910: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2911: split(/\:/,$entry);
2912: if (&Apache::lonnet::put('nohist_userroles',
2913: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2914: $rudom,$runame) eq 'ok') {
2915: delete $userrolehash{$entry};
2916: }
2917: }
2918: #
2919: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2920: #
2921: my %domrolebuffer = ();
2922: foreach my $entry (keys(%domainrolehash)) {
2923: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2924: if ($domrolebuffer{$rudom}) {
2925: $domrolebuffer{$rudom}.='&'.&escape($entry).
2926: '='.&escape($domainrolehash{$entry});
2927: } else {
2928: $domrolebuffer{$rudom}.=&escape($entry).
2929: '='.&escape($domainrolehash{$entry});
2930: }
2931: delete $domainrolehash{$entry};
2932: }
2933: foreach my $dom (keys(%domrolebuffer)) {
2934: my %servers = &get_servers($dom,'library');
2935: foreach my $tryserver (keys(%servers)) {
2936: unless (&reply('domroleput:'.$dom.':'.
2937: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2938: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2939: }
2940: }
2941: }
2942: $dumpcount++;
2943: }
2944:
2945: sub courselog {
2946: my $what=shift;
2947: $what=time.':'.$what;
2948: unless ($env{'request.course.id'}) { return ''; }
2949: $coursedombuf{$env{'request.course.id'}}=
2950: $env{'course.'.$env{'request.course.id'}.'.domain'};
2951: $coursenumbuf{$env{'request.course.id'}}=
2952: $env{'course.'.$env{'request.course.id'}.'.num'};
2953: $coursehombuf{$env{'request.course.id'}}=
2954: $env{'course.'.$env{'request.course.id'}.'.home'};
2955: $coursedescrbuf{$env{'request.course.id'}}=
2956: $env{'course.'.$env{'request.course.id'}.'.description'};
2957: $courseinstcodebuf{$env{'request.course.id'}}=
2958: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2959: $courseownerbuf{$env{'request.course.id'}}=
2960: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2961: $coursetypebuf{$env{'request.course.id'}}=
2962: $env{'course.'.$env{'request.course.id'}.'.type'};
2963: if (defined $courselogs{$env{'request.course.id'}}) {
2964: $courselogs{$env{'request.course.id'}}.='&'.$what;
2965: } else {
2966: $courselogs{$env{'request.course.id'}}.=$what;
2967: }
2968: if (length($courselogs{$env{'request.course.id'}})>4048) {
2969: &flushcourselogs();
2970: }
2971: }
2972:
2973: sub courseacclog {
2974: my $fnsymb=shift;
2975: unless ($env{'request.course.id'}) { return ''; }
2976: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2977: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2978: $what.=':POST';
2979: # FIXME: Probably ought to escape things....
2980: foreach my $key (keys(%env)) {
2981: if ($key=~/^form\.(.*)/) {
2982: my $formitem = $1;
2983: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2984: $what.=':'.$formitem.'='.$env{$key};
2985: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2986: $what.=':'.$formitem.'='.$env{$key};
2987: }
2988: }
2989: }
2990: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2991: # FIXME: We should not be depending on a form parameter that someone
2992: # editing lonsearchcat.pm might change in the future.
2993: if ($env{'form.phase'} eq 'course_search') {
2994: $what.= ':POST';
2995: # FIXME: Probably ought to escape things....
2996: foreach my $element ('courseexp','crsfulltext','crsrelated',
2997: 'crsdiscuss') {
2998: $what.=':'.$element.'='.$env{'form.'.$element};
2999: }
3000: }
3001: }
3002: &courselog($what);
3003: }
3004:
3005: sub countacc {
3006: my $url=&declutter(shift);
3007: return if (! defined($url) || $url eq '');
3008: unless ($env{'request.course.id'}) { return ''; }
3009: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3010: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3011: $accesshash{$key}++;
3012: }
3013:
3014: sub linklog {
3015: my ($from,$to)=@_;
3016: $from=&declutter($from);
3017: $to=&declutter($to);
3018: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3019: $accesshash{$to.'___'.$from.'___goto'}=1;
3020: }
3021:
3022: sub userrolelog {
3023: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3024: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
3025: ($trole=~/^in/) || ($trole=~/^cc/) ||
3026: ($trole=~/^ep/) || ($trole=~/^cr/) ||
3027: ($trole=~/^ta/) || ($trole=~/^co/)) {
3028: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3029: $userrolehash
3030: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3031: =$tend.':'.$tstart;
3032: }
3033: if (($env{'request.role'} =~ /dc\./) &&
3034: (($trole=~/^au/) || ($trole=~/^in/) ||
3035: ($trole=~/^cc/) || ($trole=~/^ep/) ||
3036: ($trole=~/^cr/) || ($trole=~/^ta/) ||
3037: ($trole=~/^co/))) {
3038: $userrolehash
3039: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3040: =$tend.':'.$tstart;
3041: }
3042: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
3043: ($trole=~/^li/) || ($trole=~/^li/) ||
3044: ($trole=~/^au/) || ($trole=~/^dg/) ||
3045: ($trole=~/^sc/)) {
3046: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3047: $domainrolehash
3048: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3049: = $tend.':'.$tstart;
3050: }
3051: }
3052:
3053: sub courserolelog {
3054: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3055: if (($trole eq 'cc') || ($trole eq 'in') ||
3056: ($trole eq 'ep') || ($trole eq 'ad') ||
3057: ($trole eq 'ta') || ($trole eq 'st') ||
3058: ($trole=~/^cr/) || ($trole eq 'gr') ||
3059: ($trole eq 'co')) {
3060: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3061: my $cdom = $1;
3062: my $cnum = $2;
3063: my $sec = $3;
3064: my $namespace = 'rolelog';
3065: my %storehash = (
3066: role => $trole,
3067: start => $tstart,
3068: end => $tend,
3069: selfenroll => $selfenroll,
3070: context => $context,
3071: );
3072: if ($trole eq 'gr') {
3073: $namespace = 'groupslog';
3074: $storehash{'group'} = $sec;
3075: } else {
3076: $storehash{'section'} = $sec;
3077: }
3078: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3079: if (($trole ne 'st') || ($sec ne '')) {
3080: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3081: }
3082: }
3083: }
3084: return;
3085: }
3086:
3087: sub get_course_adv_roles {
3088: my ($cid,$codes) = @_;
3089: $cid=$env{'request.course.id'} unless (defined($cid));
3090: my %coursehash=&coursedescription($cid);
3091: my $crstype = &Apache::loncommon::course_type($cid);
3092: my %nothide=();
3093: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3094: if ($user !~ /:/) {
3095: $nothide{join(':',split(/[\@]/,$user))}=1;
3096: } else {
3097: $nothide{$user}=1;
3098: }
3099: }
3100: my %returnhash=();
3101: my %dumphash=
3102: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3103: my $now=time;
3104: my %privileged;
3105: foreach my $entry (keys(%dumphash)) {
3106: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3107: if (($tstart) && ($tstart<0)) { next; }
3108: if (($tend) && ($tend<$now)) { next; }
3109: if (($tstart) && ($now<$tstart)) { next; }
3110: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3111: if ($username eq '' || $domain eq '') { next; }
3112: unless (ref($privileged{$domain}) eq 'HASH') {
3113: my %dompersonnel =
3114: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3115: $privileged{$domain} = {};
3116: foreach my $server (keys(%dompersonnel)) {
3117: if (ref($dompersonnel{$server}) eq 'HASH') {
3118: foreach my $user (keys(%{$dompersonnel{$server}})) {
3119: my ($trole,$uname,$udom) = split(/:/,$user);
3120: $privileged{$udom}{$uname} = 1;
3121: }
3122: }
3123: }
3124: }
3125: if ((exists($privileged{$domain}{$username})) &&
3126: (!$nothide{$username.':'.$domain})) { next; }
3127: if ($role eq 'cr') { next; }
3128: if ($codes) {
3129: if ($section) { $role .= ':'.$section; }
3130: if ($returnhash{$role}) {
3131: $returnhash{$role}.=','.$username.':'.$domain;
3132: } else {
3133: $returnhash{$role}=$username.':'.$domain;
3134: }
3135: } else {
3136: my $key=&plaintext($role,$crstype);
3137: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3138: if ($returnhash{$key}) {
3139: $returnhash{$key}.=','.$username.':'.$domain;
3140: } else {
3141: $returnhash{$key}=$username.':'.$domain;
3142: }
3143: }
3144: }
3145: return %returnhash;
3146: }
3147:
3148: sub get_my_roles {
3149: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3150: unless (defined($uname)) { $uname=$env{'user.name'}; }
3151: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3152: my (%dumphash,%nothide);
3153: if ($context eq 'userroles') {
3154: my $extra = &freeze_escape({'skipcheck' => 1});
3155: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3156: } else {
3157: %dumphash=
3158: &dump('nohist_userroles',$udom,$uname);
3159: if ($hidepriv) {
3160: my %coursehash=&coursedescription($udom.'_'.$uname);
3161: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3162: if ($user !~ /:/) {
3163: $nothide{join(':',split(/[\@]/,$user))} = 1;
3164: } else {
3165: $nothide{$user} = 1;
3166: }
3167: }
3168: }
3169: }
3170: my %returnhash=();
3171: my $now=time;
3172: my %privileged;
3173: foreach my $entry (keys(%dumphash)) {
3174: my ($role,$tend,$tstart);
3175: if ($context eq 'userroles') {
3176: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3177: } else {
3178: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3179: }
3180: if (($tstart) && ($tstart<0)) { next; }
3181: my $status = 'active';
3182: if (($tend) && ($tend<=$now)) {
3183: $status = 'previous';
3184: }
3185: if (($tstart) && ($now<$tstart)) {
3186: $status = 'future';
3187: }
3188: if (ref($types) eq 'ARRAY') {
3189: if (!grep(/^\Q$status\E$/,@{$types})) {
3190: next;
3191: }
3192: } else {
3193: if ($status ne 'active') {
3194: next;
3195: }
3196: }
3197: my ($rolecode,$username,$domain,$section,$area);
3198: if ($context eq 'userroles') {
3199: ($area,$rolecode) = split(/_/,$entry);
3200: (undef,$domain,$username,$section) = split(/\//,$area);
3201: } else {
3202: ($role,$username,$domain,$section) = split(/\:/,$entry);
3203: }
3204: if (ref($roledoms) eq 'ARRAY') {
3205: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3206: next;
3207: }
3208: }
3209: if (ref($roles) eq 'ARRAY') {
3210: if (!grep(/^\Q$role\E$/,@{$roles})) {
3211: if ($role =~ /^cr\//) {
3212: if (!grep(/^cr$/,@{$roles})) {
3213: next;
3214: }
3215: } elsif ($role =~ /^gr\//) {
3216: if (!grep(/^gr$/,@{$roles})) {
3217: next;
3218: }
3219: } else {
3220: next;
3221: }
3222: }
3223: }
3224: if ($hidepriv) {
3225: if ($context eq 'userroles') {
3226: if ((&privileged($username,$domain)) &&
3227: (!$nothide{$username.':'.$domain})) {
3228: next;
3229: }
3230: } else {
3231: unless (ref($privileged{$domain}) eq 'HASH') {
3232: my %dompersonnel =
3233: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3234: $privileged{$domain} = {};
3235: if (keys(%dompersonnel)) {
3236: foreach my $server (keys(%dompersonnel)) {
3237: if (ref($dompersonnel{$server}) eq 'HASH') {
3238: foreach my $user (keys(%{$dompersonnel{$server}})) {
3239: my ($trole,$uname,$udom) = split(/:/,$user);
3240: $privileged{$udom}{$uname} = $trole;
3241: }
3242: }
3243: }
3244: }
3245: }
3246: if (exists($privileged{$domain}{$username})) {
3247: if (!$nothide{$username.':'.$domain}) {
3248: next;
3249: }
3250: }
3251: }
3252: }
3253: if ($withsec) {
3254: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3255: $tstart.':'.$tend;
3256: } else {
3257: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3258: }
3259: }
3260: return %returnhash;
3261: }
3262:
3263: # ----------------------------------------------------- Frontpage Announcements
3264: #
3265: #
3266:
3267: sub postannounce {
3268: my ($server,$text)=@_;
3269: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3270: unless ($text=~/\w/) { $text=''; }
3271: return &reply('setannounce:'.&escape($text),$server);
3272: }
3273:
3274: sub getannounce {
3275:
3276: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3277: my $announcement='';
3278: while (my $line = <$fh>) { $announcement .= $line; }
3279: close($fh);
3280: if ($announcement=~/\w/) {
3281: return
3282: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3283: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3284: } else {
3285: return '';
3286: }
3287: } else {
3288: return '';
3289: }
3290: }
3291:
3292: # ---------------------------------------------------------- Course ID routines
3293: # Deal with domain's nohist_courseid.db files
3294: #
3295:
3296: sub courseidput {
3297: my ($domain,$storehash,$coursehome,$caller) = @_;
3298: return unless (ref($storehash) eq 'HASH');
3299: my $outcome;
3300: if ($caller eq 'timeonly') {
3301: my $cids = '';
3302: foreach my $item (keys(%$storehash)) {
3303: $cids.=&escape($item).'&';
3304: }
3305: $cids=~s/\&$//;
3306: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3307: $coursehome);
3308: } else {
3309: my $items = '';
3310: foreach my $item (keys(%$storehash)) {
3311: $items.= &escape($item).'='.
3312: &freeze_escape($$storehash{$item}).'&';
3313: }
3314: $items=~s/\&$//;
3315: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3316: $coursehome);
3317: }
3318: if ($outcome eq 'unknown_cmd') {
3319: my $what;
3320: foreach my $cid (keys(%$storehash)) {
3321: $what .= &escape($cid).'=';
3322: foreach my $item ('description','inst_code','owner','type') {
3323: $what .= &escape($storehash->{$cid}{$item}).':';
3324: }
3325: $what =~ s/\:$/&/;
3326: }
3327: $what =~ s/\&$//;
3328: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3329: } else {
3330: return $outcome;
3331: }
3332: }
3333:
3334: sub courseiddump {
3335: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3336: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3337: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3338: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3339: my $as_hash = 1;
3340: my %returnhash;
3341: if (!$domfilter) { $domfilter=''; }
3342: my %libserv = &all_library();
3343: foreach my $tryserver (keys(%libserv)) {
3344: if ( ( $hostidflag == 1
3345: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3346: || (!defined($hostidflag)) ) {
3347:
3348: if (($domfilter eq '') ||
3349: (&host_domain($tryserver) eq $domfilter)) {
3350: my $rep =
3351: &reply('courseiddump:'.&host_domain($tryserver).':'.
3352: $sincefilter.':'.&escape($descfilter).':'.
3353: &escape($instcodefilter).':'.&escape($ownerfilter).
3354: ':'.&escape($coursefilter).':'.&escape($typefilter).
3355: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3356: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3357: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3358: &escape($cc_clone).':'.$cloneonly.':'.
3359: &escape($createdbefore).':'.&escape($createdafter).':'.
3360: &escape($creationcontext).':'.$domcloner,
3361: $tryserver);
3362: my @pairs=split(/\&/,$rep);
3363: foreach my $item (@pairs) {
3364: my ($key,$value)=split(/\=/,$item,2);
3365: $key = &unescape($key);
3366: next if ($key =~ /^error: 2 /);
3367: my $result = &thaw_unescape($value);
3368: if (ref($result) eq 'HASH') {
3369: $returnhash{$key}=$result;
3370: } else {
3371: my @responses = split(/:/,$value);
3372: my @items = ('description','inst_code','owner','type');
3373: for (my $i=0; $i<@responses; $i++) {
3374: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3375: }
3376: }
3377: }
3378: }
3379: }
3380: }
3381: return %returnhash;
3382: }
3383:
3384: sub courselastaccess {
3385: my ($cdom,$cnum,$hostidref) = @_;
3386: my %returnhash;
3387: if ($cdom && $cnum) {
3388: my $chome = &homeserver($cnum,$cdom);
3389: if ($chome ne 'no_host') {
3390: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3391: &extract_lastaccess(\%returnhash,$rep);
3392: }
3393: } else {
3394: if (!$cdom) { $cdom=''; }
3395: my %libserv = &all_library();
3396: foreach my $tryserver (keys(%libserv)) {
3397: if (ref($hostidref) eq 'ARRAY') {
3398: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3399: }
3400: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3401: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3402: &extract_lastaccess(\%returnhash,$rep);
3403: }
3404: }
3405: }
3406: return %returnhash;
3407: }
3408:
3409: sub extract_lastaccess {
3410: my ($returnhash,$rep) = @_;
3411: if (ref($returnhash) eq 'HASH') {
3412: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3413: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3414: $rep eq '') {
3415: my @pairs=split(/\&/,$rep);
3416: foreach my $item (@pairs) {
3417: my ($key,$value)=split(/\=/,$item,2);
3418: $key = &unescape($key);
3419: next if ($key =~ /^error: 2 /);
3420: $returnhash->{$key} = &thaw_unescape($value);
3421: }
3422: }
3423: }
3424: return;
3425: }
3426:
3427: # ---------------------------------------------------------- DC e-mail
3428:
3429: sub dcmailput {
3430: my ($domain,$msgid,$message,$server)=@_;
3431: my $status = &Apache::lonnet::critical(
3432: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3433: &escape($message),$server);
3434: return $status;
3435: }
3436:
3437: sub dcmaildump {
3438: my ($dom,$startdate,$enddate,$senders) = @_;
3439: my %returnhash=();
3440:
3441: if (defined(&domain($dom,'primary'))) {
3442: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3443: &escape($enddate).':';
3444: my @esc_senders=map { &escape($_)} @$senders;
3445: $cmd.=&escape(join('&',@esc_senders));
3446: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3447: my ($key,$value) = split(/\=/,$line,2);
3448: if (($key) && ($value)) {
3449: $returnhash{&unescape($key)} = &unescape($value);
3450: }
3451: }
3452: }
3453: return %returnhash;
3454: }
3455: # ---------------------------------------------------------- Domain roles
3456:
3457: sub get_domain_roles {
3458: my ($dom,$roles,$startdate,$enddate)=@_;
3459: if ((!defined($startdate)) || ($startdate eq '')) {
3460: $startdate = '.';
3461: }
3462: if ((!defined($enddate)) || ($enddate eq '')) {
3463: $enddate = '.';
3464: }
3465: my $rolelist;
3466: if (ref($roles) eq 'ARRAY') {
3467: $rolelist = join(':',@{$roles});
3468: }
3469: my %personnel = ();
3470:
3471: my %servers = &get_servers($dom,'library');
3472: foreach my $tryserver (keys(%servers)) {
3473: %{$personnel{$tryserver}}=();
3474: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3475: &escape($startdate).':'.
3476: &escape($enddate).':'.
3477: &escape($rolelist), $tryserver))) {
3478: my ($key,$value) = split(/\=/,$line,2);
3479: if (($key) && ($value)) {
3480: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3481: }
3482: }
3483: }
3484: return %personnel;
3485: }
3486:
3487: # ----------------------------------------------------------- Interval timing
3488:
3489: sub get_first_access {
3490: my ($type,$argsymb)=@_;
3491: my ($symb,$courseid,$udom,$uname)=&whichuser();
3492: if ($argsymb) { $symb=$argsymb; }
3493: my ($map,$id,$res)=&decode_symb($symb);
3494: if ($type eq 'course') {
3495: $res='course';
3496: } elsif ($type eq 'map') {
3497: $res=&symbread($map);
3498: } else {
3499: $res=$symb;
3500: }
3501: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3502: return $times{"$courseid\0$res"};
3503: }
3504:
3505: sub set_first_access {
3506: my ($type)=@_;
3507: my ($symb,$courseid,$udom,$uname)=&whichuser();
3508: my ($map,$id,$res)=&decode_symb($symb);
3509: if ($type eq 'course') {
3510: $res='course';
3511: } elsif ($type eq 'map') {
3512: $res=&symbread($map);
3513: } else {
3514: $res=$symb;
3515: }
3516: my $firstaccess=&get_first_access($type,$symb);
3517: if (!$firstaccess) {
3518: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3519: }
3520: return 'already_set';
3521: }
3522:
3523: # --------------------------------------------- Set Expire Date for Spreadsheet
3524:
3525: sub expirespread {
3526: my ($uname,$udom,$stype,$usymb)=@_;
3527: my $cid=$env{'request.course.id'};
3528: if ($cid) {
3529: my $now=time;
3530: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3531: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3532: $env{'course.'.$cid.'.num'}.
3533: ':nohist_expirationdates:'.
3534: &escape($key).'='.$now,
3535: $env{'course.'.$cid.'.home'})
3536: }
3537: return 'ok';
3538: }
3539:
3540: # ----------------------------------------------------- Devalidate Spreadsheets
3541:
3542: sub devalidate {
3543: my ($symb,$uname,$udom)=@_;
3544: my $cid=$env{'request.course.id'};
3545: if ($cid) {
3546: # delete the stored spreadsheets for
3547: # - the student level sheet of this user in course's homespace
3548: # - the assessment level sheet for this resource
3549: # for this user in user's homespace
3550: # - current conditional state info
3551: my $key=$uname.':'.$udom.':';
3552: my $status=
3553: &del('nohist_calculatedsheets',
3554: [$key.'studentcalc:'],
3555: $env{'course.'.$cid.'.domain'},
3556: $env{'course.'.$cid.'.num'})
3557: .' '.
3558: &del('nohist_calculatedsheets_'.$cid,
3559: [$key.'assesscalc:'.$symb],$udom,$uname);
3560: unless ($status eq 'ok ok') {
3561: &logthis('Could not devalidate spreadsheet '.
3562: $uname.' at '.$udom.' for '.
3563: $symb.': '.$status);
3564: }
3565: &delenv('user.state.'.$cid);
3566: }
3567: }
3568:
3569: sub get_scalar {
3570: my ($string,$end) = @_;
3571: my $value;
3572: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3573: $value = $1;
3574: } elsif ($$string =~ s/^([^&]*?)&//) {
3575: $value = $1;
3576: }
3577: return &unescape($value);
3578: }
3579:
3580: sub array2str {
3581: my (@array) = @_;
3582: my $result=&arrayref2str(\@array);
3583: $result=~s/^__ARRAY_REF__//;
3584: $result=~s/__END_ARRAY_REF__$//;
3585: return $result;
3586: }
3587:
3588: sub arrayref2str {
3589: my ($arrayref) = @_;
3590: my $result='__ARRAY_REF__';
3591: foreach my $elem (@$arrayref) {
3592: if(ref($elem) eq 'ARRAY') {
3593: $result.=&arrayref2str($elem).'&';
3594: } elsif(ref($elem) eq 'HASH') {
3595: $result.=&hashref2str($elem).'&';
3596: } elsif(ref($elem)) {
3597: #print("Got a ref of ".(ref($elem))." skipping.");
3598: } else {
3599: $result.=&escape($elem).'&';
3600: }
3601: }
3602: $result=~s/\&$//;
3603: $result .= '__END_ARRAY_REF__';
3604: return $result;
3605: }
3606:
3607: sub hash2str {
3608: my (%hash) = @_;
3609: my $result=&hashref2str(\%hash);
3610: $result=~s/^__HASH_REF__//;
3611: $result=~s/__END_HASH_REF__$//;
3612: return $result;
3613: }
3614:
3615: sub hashref2str {
3616: my ($hashref)=@_;
3617: my $result='__HASH_REF__';
3618: foreach my $key (sort(keys(%$hashref))) {
3619: if (ref($key) eq 'ARRAY') {
3620: $result.=&arrayref2str($key).'=';
3621: } elsif (ref($key) eq 'HASH') {
3622: $result.=&hashref2str($key).'=';
3623: } elsif (ref($key)) {
3624: $result.='=';
3625: #print("Got a ref of ".(ref($key))." skipping.");
3626: } else {
3627: if ($key) {$result.=&escape($key).'=';} else { last; }
3628: }
3629:
3630: if(ref($hashref->{$key}) eq 'ARRAY') {
3631: $result.=&arrayref2str($hashref->{$key}).'&';
3632: } elsif(ref($hashref->{$key}) eq 'HASH') {
3633: $result.=&hashref2str($hashref->{$key}).'&';
3634: } elsif(ref($hashref->{$key})) {
3635: $result.='&';
3636: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3637: } else {
3638: $result.=&escape($hashref->{$key}).'&';
3639: }
3640: }
3641: $result=~s/\&$//;
3642: $result .= '__END_HASH_REF__';
3643: return $result;
3644: }
3645:
3646: sub str2hash {
3647: my ($string)=@_;
3648: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3649: return %$hash;
3650: }
3651:
3652: sub str2hashref {
3653: my ($string) = @_;
3654:
3655: my %hash;
3656:
3657: if($string !~ /^__HASH_REF__/) {
3658: if (! ($string eq '' || !defined($string))) {
3659: $hash{'error'}='Not hash reference';
3660: }
3661: return (\%hash, $string);
3662: }
3663:
3664: $string =~ s/^__HASH_REF__//;
3665:
3666: while($string !~ /^__END_HASH_REF__/) {
3667: #key
3668: my $key='';
3669: if($string =~ /^__HASH_REF__/) {
3670: ($key, $string)=&str2hashref($string);
3671: if(defined($key->{'error'})) {
3672: $hash{'error'}='Bad data';
3673: return (\%hash, $string);
3674: }
3675: } elsif($string =~ /^__ARRAY_REF__/) {
3676: ($key, $string)=&str2arrayref($string);
3677: if($key->[0] eq 'Array reference error') {
3678: $hash{'error'}='Bad data';
3679: return (\%hash, $string);
3680: }
3681: } else {
3682: $string =~ s/^(.*?)=//;
3683: $key=&unescape($1);
3684: }
3685: $string =~ s/^=//;
3686:
3687: #value
3688: my $value='';
3689: if($string =~ /^__HASH_REF__/) {
3690: ($value, $string)=&str2hashref($string);
3691: if(defined($value->{'error'})) {
3692: $hash{'error'}='Bad data';
3693: return (\%hash, $string);
3694: }
3695: } elsif($string =~ /^__ARRAY_REF__/) {
3696: ($value, $string)=&str2arrayref($string);
3697: if($value->[0] eq 'Array reference error') {
3698: $hash{'error'}='Bad data';
3699: return (\%hash, $string);
3700: }
3701: } else {
3702: $value=&get_scalar(\$string,'__END_HASH_REF__');
3703: }
3704: $string =~ s/^&//;
3705:
3706: $hash{$key}=$value;
3707: }
3708:
3709: $string =~ s/^__END_HASH_REF__//;
3710:
3711: return (\%hash, $string);
3712: }
3713:
3714: sub str2array {
3715: my ($string)=@_;
3716: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3717: return @$array;
3718: }
3719:
3720: sub str2arrayref {
3721: my ($string) = @_;
3722: my @array;
3723:
3724: if($string !~ /^__ARRAY_REF__/) {
3725: if (! ($string eq '' || !defined($string))) {
3726: $array[0]='Array reference error';
3727: }
3728: return (\@array, $string);
3729: }
3730:
3731: $string =~ s/^__ARRAY_REF__//;
3732:
3733: while($string !~ /^__END_ARRAY_REF__/) {
3734: my $value='';
3735: if($string =~ /^__HASH_REF__/) {
3736: ($value, $string)=&str2hashref($string);
3737: if(defined($value->{'error'})) {
3738: $array[0] ='Array reference error';
3739: return (\@array, $string);
3740: }
3741: } elsif($string =~ /^__ARRAY_REF__/) {
3742: ($value, $string)=&str2arrayref($string);
3743: if($value->[0] eq 'Array reference error') {
3744: $array[0] ='Array reference error';
3745: return (\@array, $string);
3746: }
3747: } else {
3748: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3749: }
3750: $string =~ s/^&//;
3751:
3752: push(@array, $value);
3753: }
3754:
3755: $string =~ s/^__END_ARRAY_REF__//;
3756:
3757: return (\@array, $string);
3758: }
3759:
3760: # -------------------------------------------------------------------Temp Store
3761:
3762: sub tmpreset {
3763: my ($symb,$namespace,$domain,$stuname) = @_;
3764: if (!$symb) {
3765: $symb=&symbread();
3766: if (!$symb) { $symb= $env{'request.url'}; }
3767: }
3768: $symb=escape($symb);
3769:
3770: if (!$namespace) { $namespace=$env{'request.state'}; }
3771: $namespace=~s/\//\_/g;
3772: $namespace=~s/\W//g;
3773:
3774: if (!$domain) { $domain=$env{'user.domain'}; }
3775: if (!$stuname) { $stuname=$env{'user.name'}; }
3776: if ($domain eq 'public' && $stuname eq 'public') {
3777: $stuname=$ENV{'REMOTE_ADDR'};
3778: }
3779: my $path=LONCAPA::tempdir();
3780: my %hash;
3781: if (tie(%hash,'GDBM_File',
3782: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3783: &GDBM_WRCREAT(),0640)) {
3784: foreach my $key (keys(%hash)) {
3785: if ($key=~ /:$symb/) {
3786: delete($hash{$key});
3787: }
3788: }
3789: }
3790: }
3791:
3792: sub tmpstore {
3793: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3794:
3795: if (!$symb) {
3796: $symb=&symbread();
3797: if (!$symb) { $symb= $env{'request.url'}; }
3798: }
3799: $symb=escape($symb);
3800:
3801: if (!$namespace) {
3802: # I don't think we would ever want to store this for a course.
3803: # it seems this will only be used if we don't have a course.
3804: #$namespace=$env{'request.course.id'};
3805: #if (!$namespace) {
3806: $namespace=$env{'request.state'};
3807: #}
3808: }
3809: $namespace=~s/\//\_/g;
3810: $namespace=~s/\W//g;
3811: if (!$domain) { $domain=$env{'user.domain'}; }
3812: if (!$stuname) { $stuname=$env{'user.name'}; }
3813: if ($domain eq 'public' && $stuname eq 'public') {
3814: $stuname=$ENV{'REMOTE_ADDR'};
3815: }
3816: my $now=time;
3817: my %hash;
3818: my $path=LONCAPA::tempdir();
3819: if (tie(%hash,'GDBM_File',
3820: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3821: &GDBM_WRCREAT(),0640)) {
3822: $hash{"version:$symb"}++;
3823: my $version=$hash{"version:$symb"};
3824: my $allkeys='';
3825: foreach my $key (keys(%$storehash)) {
3826: $allkeys.=$key.':';
3827: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3828: }
3829: $hash{"$version:$symb:timestamp"}=$now;
3830: $allkeys.='timestamp';
3831: $hash{"$version:keys:$symb"}=$allkeys;
3832: if (untie(%hash)) {
3833: return 'ok';
3834: } else {
3835: return "error:$!";
3836: }
3837: } else {
3838: return "error:$!";
3839: }
3840: }
3841:
3842: # -----------------------------------------------------------------Temp Restore
3843:
3844: sub tmprestore {
3845: my ($symb,$namespace,$domain,$stuname) = @_;
3846:
3847: if (!$symb) {
3848: $symb=&symbread();
3849: if (!$symb) { $symb= $env{'request.url'}; }
3850: }
3851: $symb=escape($symb);
3852:
3853: if (!$namespace) { $namespace=$env{'request.state'}; }
3854:
3855: if (!$domain) { $domain=$env{'user.domain'}; }
3856: if (!$stuname) { $stuname=$env{'user.name'}; }
3857: if ($domain eq 'public' && $stuname eq 'public') {
3858: $stuname=$ENV{'REMOTE_ADDR'};
3859: }
3860: my %returnhash;
3861: $namespace=~s/\//\_/g;
3862: $namespace=~s/\W//g;
3863: my %hash;
3864: my $path=LONCAPA::tempdir();
3865: if (tie(%hash,'GDBM_File',
3866: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3867: &GDBM_READER(),0640)) {
3868: my $version=$hash{"version:$symb"};
3869: $returnhash{'version'}=$version;
3870: my $scope;
3871: for ($scope=1;$scope<=$version;$scope++) {
3872: my $vkeys=$hash{"$scope:keys:$symb"};
3873: my @keys=split(/:/,$vkeys);
3874: my $key;
3875: $returnhash{"$scope:keys"}=$vkeys;
3876: foreach $key (@keys) {
3877: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3878: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3879: }
3880: }
3881: if (!(untie(%hash))) {
3882: return "error:$!";
3883: }
3884: } else {
3885: return "error:$!";
3886: }
3887: return %returnhash;
3888: }
3889:
3890: # ----------------------------------------------------------------------- Store
3891:
3892: sub store {
3893: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3894: my $home='';
3895:
3896: if ($stuname) { $home=&homeserver($stuname,$domain); }
3897:
3898: $symb=&symbclean($symb);
3899: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3900:
3901: if (!$domain) { $domain=$env{'user.domain'}; }
3902: if (!$stuname) { $stuname=$env{'user.name'}; }
3903:
3904: &devalidate($symb,$stuname,$domain);
3905:
3906: $symb=escape($symb);
3907: if (!$namespace) {
3908: unless ($namespace=$env{'request.course.id'}) {
3909: return '';
3910: }
3911: }
3912: if (!$home) { $home=$env{'user.home'}; }
3913:
3914: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3915: $$storehash{'host'}=$perlvar{'lonHostID'};
3916:
3917: my $namevalue='';
3918: foreach my $key (keys(%$storehash)) {
3919: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3920: }
3921: $namevalue=~s/\&$//;
3922: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3923: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3924: }
3925:
3926: # -------------------------------------------------------------- Critical Store
3927:
3928: sub cstore {
3929: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3930: my $home='';
3931:
3932: if ($stuname) { $home=&homeserver($stuname,$domain); }
3933:
3934: $symb=&symbclean($symb);
3935: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3936:
3937: if (!$domain) { $domain=$env{'user.domain'}; }
3938: if (!$stuname) { $stuname=$env{'user.name'}; }
3939:
3940: &devalidate($symb,$stuname,$domain);
3941:
3942: $symb=escape($symb);
3943: if (!$namespace) {
3944: unless ($namespace=$env{'request.course.id'}) {
3945: return '';
3946: }
3947: }
3948: if (!$home) { $home=$env{'user.home'}; }
3949:
3950: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3951: $$storehash{'host'}=$perlvar{'lonHostID'};
3952:
3953: my $namevalue='';
3954: foreach my $key (keys(%$storehash)) {
3955: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3956: }
3957: $namevalue=~s/\&$//;
3958: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3959: return critical
3960: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3961: }
3962:
3963: # --------------------------------------------------------------------- Restore
3964:
3965: sub restore {
3966: my ($symb,$namespace,$domain,$stuname) = @_;
3967: my $home='';
3968:
3969: if ($stuname) { $home=&homeserver($stuname,$domain); }
3970:
3971: if (!$symb) {
3972: unless ($symb=escape(&symbread())) { return ''; }
3973: } else {
3974: $symb=&escape(&symbclean($symb));
3975: }
3976: if (!$namespace) {
3977: unless ($namespace=$env{'request.course.id'}) {
3978: return '';
3979: }
3980: }
3981: if (!$domain) { $domain=$env{'user.domain'}; }
3982: if (!$stuname) { $stuname=$env{'user.name'}; }
3983: if (!$home) { $home=$env{'user.home'}; }
3984: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3985:
3986: my %returnhash=();
3987: foreach my $line (split(/\&/,$answer)) {
3988: my ($name,$value)=split(/\=/,$line);
3989: $returnhash{&unescape($name)}=&thaw_unescape($value);
3990: }
3991: my $version;
3992: for ($version=1;$version<=$returnhash{'version'};$version++) {
3993: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3994: $returnhash{$item}=$returnhash{$version.':'.$item};
3995: }
3996: }
3997: return %returnhash;
3998: }
3999:
4000: # ---------------------------------------------------------- Course Description
4001: #
4002: #
4003:
4004: sub coursedescription {
4005: my ($courseid,$args)=@_;
4006: $courseid=~s/^\///;
4007: $courseid=~s/\_/\//g;
4008: my ($cdomain,$cnum)=split(/\//,$courseid);
4009: my $chome=&homeserver($cnum,$cdomain);
4010: my $normalid=$cdomain.'_'.$cnum;
4011: # need to always cache even if we get errors otherwise we keep
4012: # trying and trying and trying to get the course description.
4013: my %envhash=();
4014: my %returnhash=();
4015:
4016: my $expiretime=600;
4017: if ($env{'request.course.id'} eq $normalid) {
4018: $expiretime=120;
4019: }
4020:
4021: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4022: if (!$args->{'freshen_cache'}
4023: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4024: foreach my $key (keys(%env)) {
4025: next if ($key !~ /^\Q$prefix\E(.*)/);
4026: my ($setting) = $1;
4027: $returnhash{$setting} = $env{$key};
4028: }
4029: return %returnhash;
4030: }
4031:
4032: # get the data again
4033:
4034: if (!$args->{'one_time'}) {
4035: $envhash{'course.'.$normalid.'.last_cache'}=time;
4036: }
4037:
4038: if ($chome ne 'no_host') {
4039: %returnhash=&dump('environment',$cdomain,$cnum);
4040: if (!exists($returnhash{'con_lost'})) {
4041: my $username = $env{'user.name'}; # Defult username
4042: if(defined $args->{'user'}) {
4043: $username = $args->{'user'};
4044: }
4045: $returnhash{'home'}= $chome;
4046: $returnhash{'domain'} = $cdomain;
4047: $returnhash{'num'} = $cnum;
4048: if (!defined($returnhash{'type'})) {
4049: $returnhash{'type'} = 'Course';
4050: }
4051: while (my ($name,$value) = each %returnhash) {
4052: $envhash{'course.'.$normalid.'.'.$name}=$value;
4053: }
4054: $returnhash{'url'}=&clutter($returnhash{'url'});
4055: $returnhash{'fn'}=LONCAPA::tempdir() .
4056: $username.'_'.$cdomain.'_'.$cnum;
4057: $envhash{'course.'.$normalid.'.home'}=$chome;
4058: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4059: $envhash{'course.'.$normalid.'.num'}=$cnum;
4060: }
4061: }
4062: if (!$args->{'one_time'}) {
4063: &appenv(\%envhash);
4064: }
4065: return %returnhash;
4066: }
4067:
4068: sub update_released_required {
4069: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4070: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4071: $cid = $env{'request.course.id'};
4072: $cdom = $env{'course.'.$cid.'.domain'};
4073: $cnum = $env{'course.'.$cid.'.num'};
4074: $chome = $env{'course.'.$cid.'.home'};
4075: }
4076: if ($needsrelease) {
4077: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4078: my $needsupdate;
4079: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4080: $needsupdate = 1;
4081: } else {
4082: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4083: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4084: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4085: $needsupdate = 1;
4086: }
4087: }
4088: if ($needsupdate) {
4089: my %needshash = (
4090: 'internal.releaserequired' => $needsrelease,
4091: );
4092: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4093: if ($putresult eq 'ok') {
4094: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4095: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4096: if (ref($crsinfo{$cid}) eq 'HASH') {
4097: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4098: &courseidput($cdom,\%crsinfo,$chome,'notime');
4099: }
4100: }
4101: }
4102: }
4103: return;
4104: }
4105:
4106: # -------------------------------------------------See if a user is privileged
4107:
4108: sub privileged {
4109: my ($username,$domain)=@_;
4110: my $rolesdump=&reply("dump:$domain:$username:roles",
4111: &homeserver($username,$domain));
4112: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4113: ($rolesdump =~ /^error:/)) {
4114: return 0;
4115: }
4116: my $now=time;
4117: if ($rolesdump ne '') {
4118: foreach my $entry (split(/&/,$rolesdump)) {
4119: if ($entry!~/^rolesdef_/) {
4120: my ($area,$role)=split(/=/,$entry);
4121: $area=~s/\_\w\w$//;
4122: my ($trole,$tend,$tstart)=split(/_/,$role);
4123: if (($trole eq 'dc') || ($trole eq 'su')) {
4124: my $active=1;
4125: if ($tend) {
4126: if ($tend<$now) { $active=0; }
4127: }
4128: if ($tstart) {
4129: if ($tstart>$now) { $active=0; }
4130: }
4131: if ($active) { return 1; }
4132: }
4133: }
4134: }
4135: }
4136: return 0;
4137: }
4138:
4139: # -------------------------------------------------------- Get user privileges
4140:
4141: sub rolesinit {
4142: my ($domain,$username,$authhost)=@_;
4143: my $now=time;
4144: my %userroles = ('user.login.time' => $now);
4145: my $extra = &freeze_escape({'skipcheck' => 1});
4146: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4147: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4148: ($rolesdump =~ /^error:/)) {
4149: return \%userroles;
4150: }
4151: my %allroles=();
4152: my %allgroups=();
4153:
4154: if ($rolesdump ne '') {
4155: foreach my $entry (split(/&/,$rolesdump)) {
4156: if ($entry!~/^rolesdef_/) {
4157: my ($area,$role)=split(/=/,$entry);
4158: $area=~s/\_\w\w$//;
4159: my ($trole,$tend,$tstart,$group_privs);
4160: if ($role=~/^cr/) {
4161: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4162: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4163: ($tend,$tstart)=split('_',$trest);
4164: } else {
4165: $trole=$role;
4166: }
4167: } elsif ($role =~ m|^gr/|) {
4168: ($trole,$tend,$tstart) = split(/_/,$role);
4169: next if ($tstart eq '-1');
4170: ($trole,$group_privs) = split(/\//,$trole);
4171: $group_privs = &unescape($group_privs);
4172: } else {
4173: ($trole,$tend,$tstart)=split(/_/,$role);
4174: }
4175: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4176: $username);
4177: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4178: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4179: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4180: if (($area ne '') && ($trole ne '')) {
4181: my $spec=$trole.'.'.$area;
4182: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4183: if ($trole =~ /^cr\//) {
4184: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4185: } elsif ($trole eq 'gr') {
4186: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4187: } else {
4188: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4189: }
4190: }
4191: }
4192: }
4193: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4194: $userroles{'user.adv'} = $adv;
4195: $userroles{'user.author'} = $author;
4196: $env{'user.adv'}=$adv;
4197: }
4198: return \%userroles;
4199: }
4200:
4201: sub set_arearole {
4202: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4203: # log the associated role with the area
4204: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4205: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4206: }
4207:
4208: sub custom_roleprivs {
4209: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4210: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4211: my $homsvr=homeserver($rauthor,$rdomain);
4212: if (&hostname($homsvr) ne '') {
4213: my ($rdummy,$roledef)=
4214: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4215: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4216: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4217: if (defined($syspriv)) {
4218: if ($trest =~ /^$match_community$/) {
4219: $syspriv =~ s/bre\&S//;
4220: }
4221: $$allroles{'cm./'}.=':'.$syspriv;
4222: $$allroles{$spec.'./'}.=':'.$syspriv;
4223: }
4224: if ($tdomain ne '') {
4225: if (defined($dompriv)) {
4226: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4227: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4228: }
4229: if (($trest ne '') && (defined($coursepriv))) {
4230: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4231: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4232: }
4233: }
4234: }
4235: }
4236: }
4237:
4238: sub group_roleprivs {
4239: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4240: my $access = 1;
4241: my $now = time;
4242: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4243: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4244: if ($access) {
4245: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4246: $$allgroups{$course}{$group} .=':'.$group_privs;
4247: }
4248: }
4249:
4250: sub standard_roleprivs {
4251: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4252: if (defined($pr{$trole.':s'})) {
4253: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4254: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4255: }
4256: if ($tdomain ne '') {
4257: if (defined($pr{$trole.':d'})) {
4258: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4259: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4260: }
4261: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4262: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4263: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4264: }
4265: }
4266: }
4267:
4268: sub set_userprivs {
4269: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4270: my $author=0;
4271: my $adv=0;
4272: my %grouproles = ();
4273: if (keys(%{$allgroups}) > 0) {
4274: my @groupkeys;
4275: foreach my $role (keys(%{$allroles})) {
4276: push(@groupkeys,$role);
4277: }
4278: if (ref($groups_roles) eq 'HASH') {
4279: foreach my $key (keys(%{$groups_roles})) {
4280: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4281: push(@groupkeys,$key);
4282: }
4283: }
4284: }
4285: if (@groupkeys > 0) {
4286: foreach my $role (@groupkeys) {
4287: my ($trole,$area,$sec,$extendedarea);
4288: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4289: $trole = $1;
4290: $area = $2;
4291: $sec = $3;
4292: $extendedarea = $area.$sec;
4293: if (exists($$allgroups{$area})) {
4294: foreach my $group (keys(%{$$allgroups{$area}})) {
4295: my $spec = $trole.'.'.$extendedarea;
4296: $grouproles{$spec.'.'.$area.'/'.$group} =
4297: $$allgroups{$area}{$group};
4298: }
4299: }
4300: }
4301: }
4302: }
4303: }
4304: foreach my $group (keys(%grouproles)) {
4305: $$allroles{$group} = $grouproles{$group};
4306: }
4307: foreach my $role (keys(%{$allroles})) {
4308: my %thesepriv;
4309: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4310: foreach my $item (split(/:/,$$allroles{$role})) {
4311: if ($item ne '') {
4312: my ($privilege,$restrictions)=split(/&/,$item);
4313: if ($restrictions eq '') {
4314: $thesepriv{$privilege}='F';
4315: } elsif ($thesepriv{$privilege} ne 'F') {
4316: $thesepriv{$privilege}.=$restrictions;
4317: }
4318: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4319: }
4320: }
4321: my $thesestr='';
4322: foreach my $priv (sort(keys(%thesepriv))) {
4323: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4324: }
4325: $userroles->{'user.priv.'.$role} = $thesestr;
4326: }
4327: return ($author,$adv);
4328: }
4329:
4330: sub role_status {
4331: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4332: my @pwhere = ();
4333: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4334: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4335: unless (!defined($$role) || $$role eq '') {
4336: $$where=join('.',@pwhere);
4337: $$trolecode=$$role.'.'.$$where;
4338: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4339: $$tstatus='is';
4340: if ($$tstart && $$tstart>$update) {
4341: $$tstatus='future';
4342: if ($$tstart<$now) {
4343: if ($$tstart && $$tstart>$refresh) {
4344: if (($$where ne '') && ($$role ne '')) {
4345: my (%allroles,%allgroups,$group_privs,
4346: %groups_roles,@rolecodes);
4347: my %userroles = (
4348: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4349: );
4350: @rolecodes = ('cm');
4351: my $spec=$$role.'.'.$$where;
4352: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4353: if ($$role =~ /^cr\//) {
4354: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4355: push(@rolecodes,'cr');
4356: } elsif ($$role eq 'gr') {
4357: push(@rolecodes,$$role);
4358: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4359: $env{'user.name'});
4360: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4361: (undef,my $group_privs) = split(/\//,$trole);
4362: $group_privs = &unescape($group_privs);
4363: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4364: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4365: &get_groups_roles($tdomain,$trest,
4366: \%course_roles,\@rolecodes,
4367: \%groups_roles);
4368: } else {
4369: push(@rolecodes,$$role);
4370: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4371: }
4372: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4373: &appenv(\%userroles,\@rolecodes);
4374: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4375: }
4376: }
4377: $$tstatus = 'is';
4378: }
4379: }
4380: if ($$tend) {
4381: if ($$tend<$update) {
4382: $$tstatus='expired';
4383: } elsif ($$tend<$now) {
4384: $$tstatus='will_not';
4385: }
4386: }
4387: }
4388: }
4389: }
4390:
4391: sub get_groups_roles {
4392: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4393: return unless((ref($cdom_courseroles) eq 'HASH') &&
4394: (ref($rolecodes) eq 'ARRAY') &&
4395: (ref($groups_roles) eq 'HASH'));
4396: if (keys(%{$cdom_courseroles}) > 0) {
4397: my ($cnum) = ($rest =~ /^($match_courseid)/);
4398: if ($cdom ne '' && $cnum ne '') {
4399: foreach my $key (keys(%{$cdom_courseroles})) {
4400: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4401: my $crsrole = $1;
4402: my $crssec = $2;
4403: if ($crsrole =~ /^cr/) {
4404: unless (grep(/^cr$/,@{$rolecodes})) {
4405: push(@{$rolecodes},'cr');
4406: }
4407: } else {
4408: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4409: push(@{$rolecodes},$crsrole);
4410: }
4411: }
4412: my $rolekey = "$crsrole./$cdom/$cnum";
4413: if ($crssec ne '') {
4414: $rolekey .= "/$crssec";
4415: }
4416: $rolekey .= './';
4417: $groups_roles->{$rolekey} = $rolecodes;
4418: }
4419: }
4420: }
4421: }
4422: return;
4423: }
4424:
4425: sub delete_env_groupprivs {
4426: my ($where,$courseroles,$possroles) = @_;
4427: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4428: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4429: unless (ref($courseroles->{$udom}) eq 'HASH') {
4430: %{$courseroles->{$udom}} =
4431: &get_my_roles('','','userroles',['active'],
4432: $possroles,[$udom],1);
4433: }
4434: if (ref($courseroles->{$udom}) eq 'HASH') {
4435: foreach my $item (keys(%{$courseroles->{$udom}})) {
4436: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4437: my $area = '/'.$cdom.'/'.$cnum;
4438: my $privkey = "user.priv.$crsrole.$area";
4439: if ($crssec ne '') {
4440: $privkey .= '/'.$crssec;
4441: }
4442: $privkey .= ".$area/$group";
4443: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
4444: }
4445: }
4446: return;
4447: }
4448:
4449: sub check_adhoc_privs {
4450: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
4451: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4452: if ($env{$cckey}) {
4453: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4454: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4455: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4456: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4457: }
4458: } else {
4459: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4460: }
4461: }
4462:
4463: sub set_adhoc_privileges {
4464: # role can be cc or ca
4465: my ($dcdom,$pickedcourse,$role,$caller) = @_;
4466: my $area = '/'.$dcdom.'/'.$pickedcourse;
4467: my $spec = $role.'.'.$area;
4468: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4469: $env{'user.name'});
4470: my %ccrole = ();
4471: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4472: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4473: &appenv(\%userroles,[$role,'cm']);
4474: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4475: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
4476: &appenv( {'request.role' => $spec,
4477: 'request.role.domain' => $dcdom,
4478: 'request.course.sec' => ''
4479: }
4480: );
4481: my $tadv=0;
4482: if (&allowed('adv') eq 'F') { $tadv=1; }
4483: &appenv({'request.role.adv' => $tadv});
4484: }
4485: }
4486:
4487: # --------------------------------------------------------------- get interface
4488:
4489: sub get {
4490: my ($namespace,$storearr,$udomain,$uname)=@_;
4491: my $items='';
4492: foreach my $item (@$storearr) {
4493: $items.=&escape($item).'&';
4494: }
4495: $items=~s/\&$//;
4496: if (!$udomain) { $udomain=$env{'user.domain'}; }
4497: if (!$uname) { $uname=$env{'user.name'}; }
4498: my $uhome=&homeserver($uname,$udomain);
4499:
4500: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4501: my @pairs=split(/\&/,$rep);
4502: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4503: return @pairs;
4504: }
4505: my %returnhash=();
4506: my $i=0;
4507: foreach my $item (@$storearr) {
4508: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4509: $i++;
4510: }
4511: return %returnhash;
4512: }
4513:
4514: # --------------------------------------------------------------- del interface
4515:
4516: sub del {
4517: my ($namespace,$storearr,$udomain,$uname)=@_;
4518: my $items='';
4519: foreach my $item (@$storearr) {
4520: $items.=&escape($item).'&';
4521: }
4522:
4523: $items=~s/\&$//;
4524: if (!$udomain) { $udomain=$env{'user.domain'}; }
4525: if (!$uname) { $uname=$env{'user.name'}; }
4526: my $uhome=&homeserver($uname,$udomain);
4527: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4528: }
4529:
4530: # -------------------------------------------------------------- dump interface
4531:
4532: sub dump {
4533: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
4534: if (!$udomain) { $udomain=$env{'user.domain'}; }
4535: if (!$uname) { $uname=$env{'user.name'}; }
4536: my $uhome=&homeserver($uname,$udomain);
4537: if ($regexp) {
4538: $regexp=&escape($regexp);
4539: } else {
4540: $regexp='.';
4541: }
4542: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
4543: my @pairs=split(/\&/,$rep);
4544: my %returnhash=();
4545: if (!($rep =~ /^error/ )) {
4546: foreach my $item (@pairs) {
4547: my ($key,$value)=split(/=/,$item,2);
4548: $key = &unescape($key);
4549: next if ($key =~ /^error: 2 /);
4550: $returnhash{$key}=&thaw_unescape($value);
4551: }
4552: }
4553: return %returnhash;
4554: }
4555:
4556:
4557: # --------------------------------------------------------- dumpstore interface
4558:
4559: sub dumpstore {
4560: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4561: if (!$udomain) { $udomain=$env{'user.domain'}; }
4562: if (!$uname) { $uname=$env{'user.name'}; }
4563: my $uhome=&homeserver($uname,$udomain);
4564: if ($regexp) {
4565: $regexp=&escape($regexp);
4566: } else {
4567: $regexp='.';
4568: }
4569: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4570: my @pairs=split(/\&/,$rep);
4571: my %returnhash=();
4572: foreach my $item (@pairs) {
4573: my ($key,$value)=split(/=/,$item,2);
4574: next if ($key =~ /^error: 2 /);
4575: $returnhash{$key}=&thaw_unescape($value);
4576: }
4577: return %returnhash;
4578: }
4579:
4580: # -------------------------------------------------------------- keys interface
4581:
4582: sub getkeys {
4583: my ($namespace,$udomain,$uname)=@_;
4584: if (!$udomain) { $udomain=$env{'user.domain'}; }
4585: if (!$uname) { $uname=$env{'user.name'}; }
4586: my $uhome=&homeserver($uname,$udomain);
4587: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4588: my @keyarray=();
4589: foreach my $key (split(/\&/,$rep)) {
4590: next if ($key =~ /^error: 2 /);
4591: push(@keyarray,&unescape($key));
4592: }
4593: return @keyarray;
4594: }
4595:
4596: # --------------------------------------------------------------- currentdump
4597: sub currentdump {
4598: my ($courseid,$sdom,$sname)=@_;
4599: $courseid = $env{'request.course.id'} if (! defined($courseid));
4600: $sdom = $env{'user.domain'} if (! defined($sdom));
4601: $sname = $env{'user.name'} if (! defined($sname));
4602: my $uhome = &homeserver($sname,$sdom);
4603: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4604: return if ($rep =~ /^(error:|no_such_host)/);
4605: #
4606: my %returnhash=();
4607: #
4608: if ($rep eq "unknown_cmd") {
4609: # an old lond will not know currentdump
4610: # Do a dump and make it look like a currentdump
4611: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4612: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4613: my %hash = @tmp;
4614: @tmp=();
4615: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4616: } else {
4617: my @pairs=split(/\&/,$rep);
4618: foreach my $pair (@pairs) {
4619: my ($key,$value)=split(/=/,$pair,2);
4620: my ($symb,$param) = split(/:/,$key);
4621: $returnhash{&unescape($symb)}->{&unescape($param)} =
4622: &thaw_unescape($value);
4623: }
4624: }
4625: return %returnhash;
4626: }
4627:
4628: sub convert_dump_to_currentdump{
4629: my %hash = %{shift()};
4630: my %returnhash;
4631: # Code ripped from lond, essentially. The only difference
4632: # here is the unescaping done by lonnet::dump(). Conceivably
4633: # we might run in to problems with parameter names =~ /^v\./
4634: while (my ($key,$value) = each(%hash)) {
4635: my ($v,$symb,$param) = split(/:/,$key);
4636: $symb = &unescape($symb);
4637: $param = &unescape($param);
4638: next if ($v eq 'version' || $symb eq 'keys');
4639: next if (exists($returnhash{$symb}) &&
4640: exists($returnhash{$symb}->{$param}) &&
4641: $returnhash{$symb}->{'v.'.$param} > $v);
4642: $returnhash{$symb}->{$param}=$value;
4643: $returnhash{$symb}->{'v.'.$param}=$v;
4644: }
4645: #
4646: # Remove all of the keys in the hashes which keep track of
4647: # the version of the parameter.
4648: while (my ($symb,$param_hash) = each(%returnhash)) {
4649: # use a foreach because we are going to delete from the hash.
4650: foreach my $key (keys(%$param_hash)) {
4651: delete($param_hash->{$key}) if ($key =~ /^v\./);
4652: }
4653: }
4654: return \%returnhash;
4655: }
4656:
4657: # ------------------------------------------------------ critical inc interface
4658:
4659: sub cinc {
4660: return &inc(@_,'critical');
4661: }
4662:
4663: # --------------------------------------------------------------- inc interface
4664:
4665: sub inc {
4666: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4667: if (!$udomain) { $udomain=$env{'user.domain'}; }
4668: if (!$uname) { $uname=$env{'user.name'}; }
4669: my $uhome=&homeserver($uname,$udomain);
4670: my $items='';
4671: if (! ref($store)) {
4672: # got a single value, so use that instead
4673: $items = &escape($store).'=&';
4674: } elsif (ref($store) eq 'SCALAR') {
4675: $items = &escape($$store).'=&';
4676: } elsif (ref($store) eq 'ARRAY') {
4677: $items = join('=&',map {&escape($_);} @{$store});
4678: } elsif (ref($store) eq 'HASH') {
4679: while (my($key,$value) = each(%{$store})) {
4680: $items.= &escape($key).'='.&escape($value).'&';
4681: }
4682: }
4683: $items=~s/\&$//;
4684: if ($critical) {
4685: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4686: } else {
4687: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4688: }
4689: }
4690:
4691: # --------------------------------------------------------------- put interface
4692:
4693: sub put {
4694: my ($namespace,$storehash,$udomain,$uname)=@_;
4695: if (!$udomain) { $udomain=$env{'user.domain'}; }
4696: if (!$uname) { $uname=$env{'user.name'}; }
4697: my $uhome=&homeserver($uname,$udomain);
4698: my $items='';
4699: foreach my $item (keys(%$storehash)) {
4700: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4701: }
4702: $items=~s/\&$//;
4703: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4704: }
4705:
4706: # ------------------------------------------------------------ newput interface
4707:
4708: sub newput {
4709: my ($namespace,$storehash,$udomain,$uname)=@_;
4710: if (!$udomain) { $udomain=$env{'user.domain'}; }
4711: if (!$uname) { $uname=$env{'user.name'}; }
4712: my $uhome=&homeserver($uname,$udomain);
4713: my $items='';
4714: foreach my $key (keys(%$storehash)) {
4715: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4716: }
4717: $items=~s/\&$//;
4718: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4719: }
4720:
4721: # --------------------------------------------------------- putstore interface
4722:
4723: sub putstore {
4724: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4725: if (!$udomain) { $udomain=$env{'user.domain'}; }
4726: if (!$uname) { $uname=$env{'user.name'}; }
4727: my $uhome=&homeserver($uname,$udomain);
4728: my $items='';
4729: foreach my $key (keys(%$storehash)) {
4730: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4731: }
4732: $items=~s/\&$//;
4733: my $esc_symb=&escape($symb);
4734: my $esc_v=&escape($version);
4735: my $reply =
4736: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4737: $uhome);
4738: if ($reply eq 'unknown_cmd') {
4739: # gfall back to way things use to be done
4740: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4741: $uname);
4742: }
4743: return $reply;
4744: }
4745:
4746: sub old_putstore {
4747: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4748: if (!$udomain) { $udomain=$env{'user.domain'}; }
4749: if (!$uname) { $uname=$env{'user.name'}; }
4750: my $uhome=&homeserver($uname,$udomain);
4751: my %newstorehash;
4752: foreach my $item (keys(%$storehash)) {
4753: my $key = $version.':'.&escape($symb).':'.$item;
4754: $newstorehash{$key} = $storehash->{$item};
4755: }
4756: my $items='';
4757: my %allitems = ();
4758: foreach my $item (keys(%newstorehash)) {
4759: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4760: my $key = $1.':keys:'.$2;
4761: $allitems{$key} .= $3.':';
4762: }
4763: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4764: }
4765: foreach my $item (keys(%allitems)) {
4766: $allitems{$item} =~ s/\:$//;
4767: $items.= $item.'='.$allitems{$item}.'&';
4768: }
4769: $items=~s/\&$//;
4770: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4771: }
4772:
4773: # ------------------------------------------------------ critical put interface
4774:
4775: sub cput {
4776: my ($namespace,$storehash,$udomain,$uname)=@_;
4777: if (!$udomain) { $udomain=$env{'user.domain'}; }
4778: if (!$uname) { $uname=$env{'user.name'}; }
4779: my $uhome=&homeserver($uname,$udomain);
4780: my $items='';
4781: foreach my $item (keys(%$storehash)) {
4782: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4783: }
4784: $items=~s/\&$//;
4785: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4786: }
4787:
4788: # -------------------------------------------------------------- eget interface
4789:
4790: sub eget {
4791: my ($namespace,$storearr,$udomain,$uname)=@_;
4792: my $items='';
4793: foreach my $item (@$storearr) {
4794: $items.=&escape($item).'&';
4795: }
4796: $items=~s/\&$//;
4797: if (!$udomain) { $udomain=$env{'user.domain'}; }
4798: if (!$uname) { $uname=$env{'user.name'}; }
4799: my $uhome=&homeserver($uname,$udomain);
4800: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4801: my @pairs=split(/\&/,$rep);
4802: my %returnhash=();
4803: my $i=0;
4804: foreach my $item (@$storearr) {
4805: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4806: $i++;
4807: }
4808: return %returnhash;
4809: }
4810:
4811: # ------------------------------------------------------------ tmpput interface
4812: sub tmpput {
4813: my ($storehash,$server,$context)=@_;
4814: my $items='';
4815: foreach my $item (keys(%$storehash)) {
4816: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4817: }
4818: $items=~s/\&$//;
4819: if (defined($context)) {
4820: $items .= ':'.&escape($context);
4821: }
4822: return &reply("tmpput:$items",$server);
4823: }
4824:
4825: # ------------------------------------------------------------ tmpget interface
4826: sub tmpget {
4827: my ($token,$server)=@_;
4828: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4829: my $rep=&reply("tmpget:$token",$server);
4830: my %returnhash;
4831: foreach my $item (split(/\&/,$rep)) {
4832: my ($key,$value)=split(/=/,$item);
4833: next if ($key =~ /^error: 2 /);
4834: $returnhash{&unescape($key)}=&thaw_unescape($value);
4835: }
4836: return %returnhash;
4837: }
4838:
4839: # ------------------------------------------------------------ tmpdel interface
4840: sub tmpdel {
4841: my ($token,$server)=@_;
4842: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4843: return &reply("tmpdel:$token",$server);
4844: }
4845:
4846: # -------------------------------------------------- portfolio access checking
4847:
4848: sub portfolio_access {
4849: my ($requrl) = @_;
4850: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4851: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4852: if ($result) {
4853: my %setters;
4854: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4855: my ($startblock,$endblock) =
4856: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4857: if ($startblock && $endblock) {
4858: return 'B';
4859: }
4860: } else {
4861: my ($startblock,$endblock) =
4862: &Apache::loncommon::blockcheck(\%setters,'port');
4863: if ($startblock && $endblock) {
4864: return 'B';
4865: }
4866: }
4867: }
4868: if ($result eq 'ok') {
4869: return 'F';
4870: } elsif ($result =~ /^[^:]+:guest_/) {
4871: return 'A';
4872: }
4873: return '';
4874: }
4875:
4876: sub get_portfolio_access {
4877: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4878:
4879: if (!ref($access_hash)) {
4880: my $current_perms = &get_portfile_permissions($udom,$unum);
4881: my %access_controls = &get_access_controls($current_perms,$group,
4882: $file_name);
4883: $access_hash = $access_controls{$file_name};
4884: }
4885:
4886: my ($public,$guest,@domains,@users,@courses,@groups);
4887: my $now = time;
4888: if (ref($access_hash) eq 'HASH') {
4889: foreach my $key (keys(%{$access_hash})) {
4890: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4891: if ($start > $now) {
4892: next;
4893: }
4894: if ($end && $end<$now) {
4895: next;
4896: }
4897: if ($scope eq 'public') {
4898: $public = $key;
4899: last;
4900: } elsif ($scope eq 'guest') {
4901: $guest = $key;
4902: } elsif ($scope eq 'domains') {
4903: push(@domains,$key);
4904: } elsif ($scope eq 'users') {
4905: push(@users,$key);
4906: } elsif ($scope eq 'course') {
4907: push(@courses,$key);
4908: } elsif ($scope eq 'group') {
4909: push(@groups,$key);
4910: }
4911: }
4912: if ($public) {
4913: return 'ok';
4914: }
4915: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4916: if ($guest) {
4917: return $guest;
4918: }
4919: } else {
4920: if (@domains > 0) {
4921: foreach my $domkey (@domains) {
4922: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4923: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4924: return 'ok';
4925: }
4926: }
4927: }
4928: }
4929: if (@users > 0) {
4930: foreach my $userkey (@users) {
4931: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4932: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4933: if (ref($item) eq 'HASH') {
4934: if (($item->{'uname'} eq $env{'user.name'}) &&
4935: ($item->{'udom'} eq $env{'user.domain'})) {
4936: return 'ok';
4937: }
4938: }
4939: }
4940: }
4941: }
4942: }
4943: my %roleshash;
4944: my @courses_and_groups = @courses;
4945: push(@courses_and_groups,@groups);
4946: if (@courses_and_groups > 0) {
4947: my (%allgroups,%allroles);
4948: my ($start,$end,$role,$sec,$group);
4949: foreach my $envkey (%env) {
4950: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4951: my $cid = $2.'_'.$3;
4952: if ($1 eq 'gr') {
4953: $group = $4;
4954: $allgroups{$cid}{$group} = $env{$envkey};
4955: } else {
4956: if ($4 eq '') {
4957: $sec = 'none';
4958: } else {
4959: $sec = $4;
4960: }
4961: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4962: }
4963: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4964: my $cid = $2.'_'.$3;
4965: if ($4 eq '') {
4966: $sec = 'none';
4967: } else {
4968: $sec = $4;
4969: }
4970: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4971: }
4972: }
4973: if (keys(%allroles) == 0) {
4974: return;
4975: }
4976: foreach my $key (@courses_and_groups) {
4977: my %content = %{$$access_hash{$key}};
4978: my $cnum = $content{'number'};
4979: my $cdom = $content{'domain'};
4980: my $cid = $cdom.'_'.$cnum;
4981: if (!exists($allroles{$cid})) {
4982: next;
4983: }
4984: foreach my $role_id (keys(%{$content{'roles'}})) {
4985: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4986: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4987: my @status = @{$content{'roles'}{$role_id}{'access'}};
4988: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4989: foreach my $role (keys(%{$allroles{$cid}})) {
4990: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4991: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4992: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4993: if (grep/^all$/,@sections) {
4994: return 'ok';
4995: } else {
4996: if (grep/^$sec$/,@sections) {
4997: return 'ok';
4998: }
4999: }
5000: }
5001: }
5002: if (keys(%{$allgroups{$cid}}) == 0) {
5003: if (grep/^none$/,@groups) {
5004: return 'ok';
5005: }
5006: } else {
5007: if (grep/^all$/,@groups) {
5008: return 'ok';
5009: }
5010: foreach my $group (keys(%{$allgroups{$cid}})) {
5011: if (grep/^$group$/,@groups) {
5012: return 'ok';
5013: }
5014: }
5015: }
5016: }
5017: }
5018: }
5019: }
5020: }
5021: if ($guest) {
5022: return $guest;
5023: }
5024: }
5025: }
5026: return;
5027: }
5028:
5029: sub course_group_datechecker {
5030: my ($dates,$now,$status) = @_;
5031: my ($start,$end) = split(/\./,$dates);
5032: if (!$start && !$end) {
5033: return 'ok';
5034: }
5035: if (grep/^active$/,@{$status}) {
5036: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5037: return 'ok';
5038: }
5039: }
5040: if (grep/^previous$/,@{$status}) {
5041: if ($end > $now ) {
5042: return 'ok';
5043: }
5044: }
5045: if (grep/^future$/,@{$status}) {
5046: if ($start > $now) {
5047: return 'ok';
5048: }
5049: }
5050: return;
5051: }
5052:
5053: sub parse_portfolio_url {
5054: my ($url) = @_;
5055:
5056: my ($type,$udom,$unum,$group,$file_name);
5057:
5058: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5059: $type = 1;
5060: $udom = $1;
5061: $unum = $2;
5062: $file_name = $3;
5063: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5064: $type = 2;
5065: $udom = $1;
5066: $unum = $2;
5067: $group = $3;
5068: $file_name = $3.'/'.$4;
5069: }
5070: if (wantarray) {
5071: return ($type,$udom,$unum,$file_name,$group);
5072: }
5073: return $type;
5074: }
5075:
5076: sub is_portfolio_url {
5077: my ($url) = @_;
5078: return scalar(&parse_portfolio_url($url));
5079: }
5080:
5081: sub is_portfolio_file {
5082: my ($file) = @_;
5083: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5084: return 1;
5085: }
5086: return;
5087: }
5088:
5089: sub usertools_access {
5090: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5091: my ($access,%tools);
5092: if ($context eq '') {
5093: $context = 'tools';
5094: }
5095: if ($context eq 'requestcourses') {
5096: %tools = (
5097: official => 1,
5098: unofficial => 1,
5099: community => 1,
5100: );
5101: } else {
5102: %tools = (
5103: aboutme => 1,
5104: blog => 1,
5105: portfolio => 1,
5106: );
5107: }
5108: return if (!defined($tools{$tool}));
5109:
5110: if ((!defined($udom)) || (!defined($uname))) {
5111: $udom = $env{'user.domain'};
5112: $uname = $env{'user.name'};
5113: }
5114:
5115: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5116: if ($action ne 'reload') {
5117: if ($context eq 'requestcourses') {
5118: return $env{'environment.canrequest.'.$tool};
5119: } else {
5120: return $env{'environment.availabletools.'.$tool};
5121: }
5122: }
5123: }
5124:
5125: my ($toolstatus,$inststatus);
5126:
5127: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5128: ($action ne 'reload')) {
5129: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5130: $inststatus = $env{'environment.inststatus'};
5131: } else {
5132: if (ref($userenvref) eq 'HASH') {
5133: $toolstatus = $userenvref->{$context.'.'.$tool};
5134: $inststatus = $userenvref->{'inststatus'};
5135: } else {
5136: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5137: $toolstatus = $userenv{$context.'.'.$tool};
5138: $inststatus = $userenv{'inststatus'};
5139: }
5140: }
5141:
5142: if ($toolstatus ne '') {
5143: if ($toolstatus) {
5144: $access = 1;
5145: } else {
5146: $access = 0;
5147: }
5148: return $access;
5149: }
5150:
5151: my ($is_adv,%domdef);
5152: if (ref($is_advref) eq 'HASH') {
5153: $is_adv = $is_advref->{'is_adv'};
5154: } else {
5155: $is_adv = &is_advanced_user($udom,$uname);
5156: }
5157: if (ref($domdefref) eq 'HASH') {
5158: %domdef = %{$domdefref};
5159: } else {
5160: %domdef = &get_domain_defaults($udom);
5161: }
5162: if (ref($domdef{$tool}) eq 'HASH') {
5163: if ($is_adv) {
5164: if ($domdef{$tool}{'_LC_adv'} ne '') {
5165: if ($domdef{$tool}{'_LC_adv'}) {
5166: $access = 1;
5167: } else {
5168: $access = 0;
5169: }
5170: return $access;
5171: }
5172: }
5173: if ($inststatus ne '') {
5174: my ($hasaccess,$hasnoaccess);
5175: foreach my $affiliation (split(/:/,$inststatus)) {
5176: if ($domdef{$tool}{$affiliation} ne '') {
5177: if ($domdef{$tool}{$affiliation}) {
5178: $hasaccess = 1;
5179: } else {
5180: $hasnoaccess = 1;
5181: }
5182: }
5183: }
5184: if ($hasaccess || $hasnoaccess) {
5185: if ($hasaccess) {
5186: $access = 1;
5187: } elsif ($hasnoaccess) {
5188: $access = 0;
5189: }
5190: return $access;
5191: }
5192: } else {
5193: if ($domdef{$tool}{'default'} ne '') {
5194: if ($domdef{$tool}{'default'}) {
5195: $access = 1;
5196: } elsif ($domdef{$tool}{'default'} == 0) {
5197: $access = 0;
5198: }
5199: return $access;
5200: }
5201: }
5202: } else {
5203: if ($context eq 'tools') {
5204: $access = 1;
5205: } else {
5206: $access = 0;
5207: }
5208: return $access;
5209: }
5210: }
5211:
5212: sub is_course_owner {
5213: my ($cdom,$cnum,$udom,$uname) = @_;
5214: if (($udom eq '') || ($uname eq '')) {
5215: $udom = $env{'user.domain'};
5216: $uname = $env{'user.name'};
5217: }
5218: unless (($udom eq '') || ($uname eq '')) {
5219: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5220: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5221: return 1;
5222: } else {
5223: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5224: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5225: return 1;
5226: }
5227: }
5228: }
5229: }
5230: return;
5231: }
5232:
5233: sub is_advanced_user {
5234: my ($udom,$uname) = @_;
5235: if ($udom ne '' && $uname ne '') {
5236: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5237: return $env{'user.adv'};
5238: }
5239: }
5240: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5241: my %allroles;
5242: my $is_adv;
5243: foreach my $role (keys(%roleshash)) {
5244: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5245: my $area = '/'.$tdomain.'/'.$trest;
5246: if ($sec ne '') {
5247: $area .= '/'.$sec;
5248: }
5249: if (($area ne '') && ($trole ne '')) {
5250: my $spec=$trole.'.'.$area;
5251: if ($trole =~ /^cr\//) {
5252: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5253: } elsif ($trole ne 'gr') {
5254: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5255: }
5256: }
5257: }
5258: foreach my $role (keys(%allroles)) {
5259: last if ($is_adv);
5260: foreach my $item (split(/:/,$allroles{$role})) {
5261: if ($item ne '') {
5262: my ($privilege,$restrictions)=split(/&/,$item);
5263: if ($privilege eq 'adv') {
5264: $is_adv = 1;
5265: last;
5266: }
5267: }
5268: }
5269: }
5270: return $is_adv;
5271: }
5272:
5273: sub check_can_request {
5274: my ($dom,$can_request,$request_domains) = @_;
5275: my $canreq = 0;
5276: my ($types,$typename) = &Apache::loncommon::course_types();
5277: my @options = ('approval','validate','autolimit');
5278: my $optregex = join('|',@options);
5279: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5280: foreach my $type (@{$types}) {
5281: if (&usertools_access($env{'user.name'},
5282: $env{'user.domain'},
5283: $type,undef,'requestcourses')) {
5284: $canreq ++;
5285: if (ref($request_domains) eq 'HASH') {
5286: push(@{$request_domains->{$type}},$env{'user.domain'});
5287: }
5288: if ($dom eq $env{'user.domain'}) {
5289: $can_request->{$type} = 1;
5290: }
5291: }
5292: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5293: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5294: if (@curr > 0) {
5295: foreach my $item (@curr) {
5296: if (ref($request_domains) eq 'HASH') {
5297: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5298: if ($otherdom ne '') {
5299: if (ref($request_domains->{$type}) eq 'ARRAY') {
5300: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5301: push(@{$request_domains->{$type}},$otherdom);
5302: }
5303: } else {
5304: push(@{$request_domains->{$type}},$otherdom);
5305: }
5306: }
5307: }
5308: }
5309: unless($dom eq $env{'user.domain'}) {
5310: $canreq ++;
5311: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5312: $can_request->{$type} = 1;
5313: }
5314: }
5315: }
5316: }
5317: }
5318: }
5319: return $canreq;
5320: }
5321:
5322: # ---------------------------------------------- Custom access rule evaluation
5323:
5324: sub customaccess {
5325: my ($priv,$uri)=@_;
5326: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5327: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5328: $udom = &LONCAPA::clean_domain($udom);
5329: $ucrs = &LONCAPA::clean_username($ucrs);
5330: my $access=0;
5331: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5332: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5333: if ($type eq 'user') {
5334: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5335: my ($tdom,$tuname)=split(m{/},$scope);
5336: if ($tdom) {
5337: if ($tdom ne $env{'user.domain'}) { next; }
5338: }
5339: if ($tuname) {
5340: if ($tuname ne $env{'user.name'}) { next; }
5341: }
5342: $access=($effect eq 'allow');
5343: last;
5344: }
5345: } else {
5346: if ($role) {
5347: if ($role ne $urole) { next; }
5348: }
5349: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5350: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5351: if ($tdom) {
5352: if ($tdom ne $udom) { next; }
5353: }
5354: if ($tcrs) {
5355: if ($tcrs ne $ucrs) { next; }
5356: }
5357: if ($tsec) {
5358: if ($tsec ne $usec) { next; }
5359: }
5360: $access=($effect eq 'allow');
5361: last;
5362: }
5363: if ($realm eq '' && $role eq '') {
5364: $access=($effect eq 'allow');
5365: }
5366: }
5367: }
5368: return $access;
5369: }
5370:
5371: # ------------------------------------------------- Check for a user privilege
5372:
5373: sub allowed {
5374: my ($priv,$uri,$symb,$role)=@_;
5375: my $ver_orguri=$uri;
5376: $uri=&deversion($uri);
5377: my $orguri=$uri;
5378: $uri=&declutter($uri);
5379:
5380: if ($priv eq 'evb') {
5381: # Evade communication block restrictions for specified role in a course
5382: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5383: return $1;
5384: } else {
5385: return;
5386: }
5387: }
5388:
5389: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5390: # Free bre access to adm and meta resources
5391: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5392: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5393: && ($priv eq 'bre')) {
5394: return 'F';
5395: }
5396:
5397: # Free bre access to user's own portfolio contents
5398: my ($space,$domain,$name,@dir)=split('/',$uri);
5399: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5400: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5401: my %setters;
5402: my ($startblock,$endblock) =
5403: &Apache::loncommon::blockcheck(\%setters,'port');
5404: if ($startblock && $endblock) {
5405: return 'B';
5406: } else {
5407: return 'F';
5408: }
5409: }
5410:
5411: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5412: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5413: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5414: if (exists($env{'request.course.id'})) {
5415: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5416: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5417: if (($domain eq $cdom) && ($name eq $cnum)) {
5418: my $courseprivid=$env{'request.course.id'};
5419: $courseprivid=~s/\_/\//;
5420: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5421: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5422: return $1;
5423: } else {
5424: if ($env{'request.course.sec'}) {
5425: $courseprivid.='/'.$env{'request.course.sec'};
5426: }
5427: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5428: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5429: return $2;
5430: }
5431: }
5432: }
5433: }
5434: }
5435:
5436: # Free bre to public access
5437:
5438: if ($priv eq 'bre') {
5439: my $copyright=&metadata($uri,'copyright');
5440: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5441: return 'F';
5442: }
5443: if ($copyright eq 'priv') {
5444: $uri=~/([^\/]+)\/([^\/]+)\//;
5445: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5446: return '';
5447: }
5448: }
5449: if ($copyright eq 'domain') {
5450: $uri=~/([^\/]+)\/([^\/]+)\//;
5451: unless (($env{'user.domain'} eq $1) ||
5452: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5453: return '';
5454: }
5455: }
5456: if ($env{'request.role'}=~ /li\.\//) {
5457: # Library role, so allow browsing of resources in this domain.
5458: return 'F';
5459: }
5460: if ($copyright eq 'custom') {
5461: unless (&customaccess($priv,$uri)) { return ''; }
5462: }
5463: }
5464: # Domain coordinator is trying to create a course
5465: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5466: # uri is the requested domain in this case.
5467: # comparison to 'request.role.domain' shows if the user has selected
5468: # a role of dc for the domain in question.
5469: return 'F' if ($uri eq $env{'request.role.domain'});
5470: }
5471:
5472: my $thisallowed='';
5473: my $statecond=0;
5474: my $courseprivid='';
5475:
5476: my $ownaccess;
5477: # Community Coordinator or Assistant Co-author browsing resource space.
5478: if (($priv eq 'bro') && ($env{'user.author'})) {
5479: if ($uri eq '') {
5480: $ownaccess = 1;
5481: } else {
5482: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5483: my $udom = $env{'user.domain'};
5484: my $uname = $env{'user.name'};
5485: if ($uri =~ m{^\Q$udom\E/?$}) {
5486: $ownaccess = 1;
5487: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5488: unless ($uri =~ m{\.\./}) {
5489: $ownaccess = 1;
5490: }
5491: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5492: my $now = time;
5493: if ($uri =~ m{^([^/]+)/?$}) {
5494: my $adom = $1;
5495: foreach my $key (keys(%env)) {
5496: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5497: my ($start,$end) = split('.',$env{$key});
5498: if (($now >= $start) && (!$end || $end < $now)) {
5499: $ownaccess = 1;
5500: last;
5501: }
5502: }
5503: }
5504: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5505: my $adom = $1;
5506: my $aname = $2;
5507: foreach my $role ('ca','aa') {
5508: if ($env{"user.role.$role./$adom/$aname"}) {
5509: my ($start,$end) =
5510: split('.',$env{"user.role.$role./$adom/$aname"});
5511: if (($now >= $start) && (!$end || $end < $now)) {
5512: $ownaccess = 1;
5513: last;
5514: }
5515: }
5516: }
5517: }
5518: }
5519: }
5520: }
5521: }
5522:
5523: # Course
5524:
5525: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5526: unless (($priv eq 'bro') && (!$ownaccess)) {
5527: $thisallowed.=$1;
5528: }
5529: }
5530:
5531: # Domain
5532:
5533: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5534: =~/\Q$priv\E\&([^\:]*)/) {
5535: unless (($priv eq 'bro') && (!$ownaccess)) {
5536: $thisallowed.=$1;
5537: }
5538: }
5539:
5540: # Course: uri itself is a course
5541: my $courseuri=$uri;
5542: $courseuri=~s/\_(\d)/\/$1/;
5543: $courseuri=~s/^([^\/])/\/$1/;
5544:
5545: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5546: =~/\Q$priv\E\&([^\:]*)/) {
5547: unless (($priv eq 'bro') && (!$ownaccess)) {
5548: $thisallowed.=$1;
5549: }
5550: }
5551:
5552: # URI is an uploaded document for this course, default permissions don't matter
5553: # not allowing 'edit' access (editupload) to uploaded course docs
5554: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5555: $thisallowed='';
5556: my ($match)=&is_on_map($uri);
5557: if ($match) {
5558: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5559: =~/\Q$priv\E\&([^\:]*)/) {
5560: $thisallowed.=$1;
5561: }
5562: } else {
5563: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5564: if ($refuri) {
5565: if ($refuri =~ m|^/adm/|) {
5566: $thisallowed='F';
5567: } else {
5568: $refuri=&declutter($refuri);
5569: my ($match) = &is_on_map($refuri);
5570: if ($match) {
5571: $thisallowed='F';
5572: }
5573: }
5574: }
5575: }
5576: }
5577:
5578: if ($priv eq 'bre'
5579: && $thisallowed ne 'F'
5580: && $thisallowed ne '2'
5581: && &is_portfolio_url($uri)) {
5582: $thisallowed = &portfolio_access($uri);
5583: }
5584:
5585: # Full access at system, domain or course-wide level? Exit.
5586: if ($thisallowed=~/F/) {
5587: return 'F';
5588: }
5589:
5590: # If this is generating or modifying users, exit with special codes
5591:
5592: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5593: if (($priv eq 'cca') || ($priv eq 'caa')) {
5594: my ($audom,$auname)=split('/',$uri);
5595: # no author name given, so this just checks on the general right to make a co-author in this domain
5596: unless ($auname) { return $thisallowed; }
5597: # an author name is given, so we are about to actually make a co-author for a certain account
5598: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5599: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5600: ($audom ne $env{'request.role.domain'}))) { return ''; }
5601: }
5602: return $thisallowed;
5603: }
5604: #
5605: # Gathered so far: system, domain and course wide privileges
5606: #
5607: # Course: See if uri or referer is an individual resource that is part of
5608: # the course
5609:
5610: if ($env{'request.course.id'}) {
5611:
5612: $courseprivid=$env{'request.course.id'};
5613: if ($env{'request.course.sec'}) {
5614: $courseprivid.='/'.$env{'request.course.sec'};
5615: }
5616: $courseprivid=~s/\_/\//;
5617: my $checkreferer=1;
5618: my ($match,$cond)=&is_on_map($uri);
5619: if ($match) {
5620: $statecond=$cond;
5621: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5622: =~/\Q$priv\E\&([^\:]*)/) {
5623: $thisallowed.=$1;
5624: $checkreferer=0;
5625: }
5626: }
5627:
5628: if ($checkreferer) {
5629: my $refuri=$env{'httpref.'.$orguri};
5630: unless ($refuri) {
5631: foreach my $key (keys(%env)) {
5632: if ($key=~/^httpref\..*\*/) {
5633: my $pattern=$key;
5634: $pattern=~s/^httpref\.\/res\///;
5635: $pattern=~s/\*/\[\^\/\]\+/g;
5636: $pattern=~s/\//\\\//g;
5637: if ($orguri=~/$pattern/) {
5638: $refuri=$env{$key};
5639: }
5640: }
5641: }
5642: }
5643:
5644: if ($refuri) {
5645: $refuri=&declutter($refuri);
5646: my ($match,$cond)=&is_on_map($refuri);
5647: if ($match) {
5648: my $refstatecond=$cond;
5649: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5650: =~/\Q$priv\E\&([^\:]*)/) {
5651: $thisallowed.=$1;
5652: $uri=$refuri;
5653: $statecond=$refstatecond;
5654: }
5655: }
5656: }
5657: }
5658: }
5659:
5660: #
5661: # Gathered now: all privileges that could apply, and condition number
5662: #
5663: #
5664: # Full or no access?
5665: #
5666:
5667: if ($thisallowed=~/F/) {
5668: return 'F';
5669: }
5670:
5671: unless ($thisallowed) {
5672: return '';
5673: }
5674:
5675: # Restrictions exist, deal with them
5676: #
5677: # C:according to course preferences
5678: # R:according to resource settings
5679: # L:unless locked
5680: # X:according to user session state
5681: #
5682:
5683: # Possibly locked functionality, check all courses
5684: # Locks might take effect only after 10 minutes cache expiration for other
5685: # courses, and 2 minutes for current course
5686:
5687: my $envkey;
5688: if ($thisallowed=~/L/) {
5689: foreach $envkey (keys(%env)) {
5690: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5691: my $courseid=$2;
5692: my $roleid=$1.'.'.$2;
5693: $courseid=~s/^\///;
5694: my $expiretime=600;
5695: if ($env{'request.role'} eq $roleid) {
5696: $expiretime=120;
5697: }
5698: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5699: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5700: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5701: &coursedescription($courseid,{'freshen_cache' => 1});
5702: }
5703: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5704: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5705: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5706: &log($env{'user.domain'},$env{'user.name'},
5707: $env{'user.home'},
5708: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5709: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5710: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5711: return '';
5712: }
5713: }
5714: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5715: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5716: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5717: &log($env{'user.domain'},$env{'user.name'},
5718: $env{'user.home'},
5719: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5720: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5721: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5722: return '';
5723: }
5724: }
5725: }
5726: }
5727: }
5728:
5729: #
5730: # Rest of the restrictions depend on selected course
5731: #
5732:
5733: unless ($env{'request.course.id'}) {
5734: if ($thisallowed eq 'A') {
5735: return 'A';
5736: } elsif ($thisallowed eq 'B') {
5737: return 'B';
5738: } else {
5739: return '1';
5740: }
5741: }
5742:
5743: #
5744: # Now user is definitely in a course
5745: #
5746:
5747:
5748: # Course preferences
5749:
5750: if ($thisallowed=~/C/) {
5751: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5752: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5753: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5754: =~/\Q$rolecode\E/) {
5755: if (($priv ne 'pch') && ($priv ne 'plc')) {
5756: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5757: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5758: $env{'request.course.id'});
5759: }
5760: return '';
5761: }
5762:
5763: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5764: =~/\Q$unamedom\E/) {
5765: if (($priv ne 'pch') && ($priv ne 'plc')) {
5766: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5767: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5768: $env{'request.course.id'});
5769: }
5770: return '';
5771: }
5772: }
5773:
5774: # Resource preferences
5775:
5776: if ($thisallowed=~/R/) {
5777: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5778: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5779: if (($priv ne 'pch') && ($priv ne 'plc')) {
5780: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5781: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5782: }
5783: return '';
5784: }
5785: }
5786:
5787: # Restricted by state or randomout?
5788:
5789: if ($thisallowed=~/X/) {
5790: if ($env{'acc.randomout'}) {
5791: if (!$symb) { $symb=&symbread($uri,1); }
5792: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5793: return '';
5794: }
5795: }
5796: if (&condval($statecond)) {
5797: return '2';
5798: } else {
5799: return '';
5800: }
5801: }
5802:
5803: if ($thisallowed eq 'A') {
5804: return 'A';
5805: } elsif ($thisallowed eq 'B') {
5806: return 'B';
5807: }
5808: return 'F';
5809: }
5810:
5811: sub split_uri_for_cond {
5812: my $uri=&deversion(&declutter(shift));
5813: my @uriparts=split(/\//,$uri);
5814: my $filename=pop(@uriparts);
5815: my $pathname=join('/',@uriparts);
5816: return ($pathname,$filename);
5817: }
5818: # --------------------------------------------------- Is a resource on the map?
5819:
5820: sub is_on_map {
5821: my ($pathname,$filename) = &split_uri_for_cond(shift);
5822: #Trying to find the conditional for the file
5823: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5824: /\&\Q$filename\E\:([\d\|]+)\&/);
5825: if ($match) {
5826: return (1,$1);
5827: } else {
5828: return (0,0);
5829: }
5830: }
5831:
5832: # --------------------------------------------------------- Get symb from alias
5833:
5834: sub get_symb_from_alias {
5835: my $symb=shift;
5836: my ($map,$resid,$url)=&decode_symb($symb);
5837: # Already is a symb
5838: if ($url) { return $symb; }
5839: # Must be an alias
5840: my $aliassymb='';
5841: my %bighash;
5842: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5843: &GDBM_READER(),0640)) {
5844: my $rid=$bighash{'mapalias_'.$symb};
5845: if ($rid) {
5846: my ($mapid,$resid)=split(/\./,$rid);
5847: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5848: $resid,$bighash{'src_'.$rid});
5849: }
5850: untie %bighash;
5851: }
5852: return $aliassymb;
5853: }
5854:
5855: # ----------------------------------------------------------------- Define Role
5856:
5857: sub definerole {
5858: if (allowed('mcr','/')) {
5859: my ($rolename,$sysrole,$domrole,$courole)=@_;
5860: foreach my $role (split(':',$sysrole)) {
5861: my ($crole,$cqual)=split(/\&/,$role);
5862: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5863: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5864: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5865: return "refused:s:$crole&$cqual";
5866: }
5867: }
5868: }
5869: foreach my $role (split(':',$domrole)) {
5870: my ($crole,$cqual)=split(/\&/,$role);
5871: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5872: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5873: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5874: return "refused:d:$crole&$cqual";
5875: }
5876: }
5877: }
5878: foreach my $role (split(':',$courole)) {
5879: my ($crole,$cqual)=split(/\&/,$role);
5880: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5881: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5882: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5883: return "refused:c:$crole&$cqual";
5884: }
5885: }
5886: }
5887: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5888: "$env{'user.domain'}:$env{'user.name'}:".
5889: "rolesdef_$rolename=".
5890: escape($sysrole.'_'.$domrole.'_'.$courole);
5891: return reply($command,$env{'user.home'});
5892: } else {
5893: return 'refused';
5894: }
5895: }
5896:
5897: # ---------------- Make a metadata query against the network of library servers
5898:
5899: sub metadata_query {
5900: my ($query,$custom,$customshow,$server_array)=@_;
5901: my %rhash;
5902: my %libserv = &all_library();
5903: my @server_list = (defined($server_array) ? @$server_array
5904: : keys(%libserv) );
5905: for my $server (@server_list) {
5906: unless ($custom or $customshow) {
5907: my $reply=&reply("querysend:".&escape($query),$server);
5908: $rhash{$server}=$reply;
5909: }
5910: else {
5911: my $reply=&reply("querysend:".&escape($query).':'.
5912: &escape($custom).':'.&escape($customshow),
5913: $server);
5914: $rhash{$server}=$reply;
5915: }
5916: }
5917: return \%rhash;
5918: }
5919:
5920: # ----------------------------------------- Send log queries and wait for reply
5921:
5922: sub log_query {
5923: my ($uname,$udom,$query,%filters)=@_;
5924: my $uhome=&homeserver($uname,$udom);
5925: if ($uhome eq 'no_host') { return 'error: no_host'; }
5926: my $uhost=&hostname($uhome);
5927: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5928: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5929: $uhome);
5930: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5931: return get_query_reply($queryid);
5932: }
5933:
5934: # -------------------------- Update MySQL table for portfolio file
5935:
5936: sub update_portfolio_table {
5937: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5938: if ($group ne '') {
5939: $file_name =~s /^\Q$group\E//;
5940: }
5941: my $homeserver = &homeserver($uname,$udom);
5942: my $queryid=
5943: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5944: ':'.&escape($file_name).':'.$action,$homeserver);
5945: my $reply = &get_query_reply($queryid);
5946: return $reply;
5947: }
5948:
5949: # -------------------------- Update MySQL allusers table
5950:
5951: sub update_allusers_table {
5952: my ($uname,$udom,$names) = @_;
5953: my $homeserver = &homeserver($uname,$udom);
5954: my $queryid=
5955: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5956: 'lastname='.&escape($names->{'lastname'}).'%%'.
5957: 'firstname='.&escape($names->{'firstname'}).'%%'.
5958: 'middlename='.&escape($names->{'middlename'}).'%%'.
5959: 'generation='.&escape($names->{'generation'}).'%%'.
5960: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5961: 'id='.&escape($names->{'id'}),$homeserver);
5962: return;
5963: }
5964:
5965: # ------- Request retrieval of institutional classlists for course(s)
5966:
5967: sub fetch_enrollment_query {
5968: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5969: my $homeserver;
5970: my $maxtries = 1;
5971: if ($context eq 'automated') {
5972: $homeserver = $perlvar{'lonHostID'};
5973: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5974: } else {
5975: $homeserver = &homeserver($cnum,$dom);
5976: }
5977: my $host=&hostname($homeserver);
5978: my $cmd = '';
5979: foreach my $affiliate (keys(%{$affiliatesref})) {
5980: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5981: }
5982: $cmd =~ s/%%$//;
5983: $cmd = &escape($cmd);
5984: my $query = 'fetchenrollment';
5985: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5986: unless ($queryid=~/^\Q$host\E\_/) {
5987: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5988: return 'error: '.$queryid;
5989: }
5990: my $reply = &get_query_reply($queryid);
5991: my $tries = 1;
5992: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5993: $reply = &get_query_reply($queryid);
5994: $tries ++;
5995: }
5996: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5997: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5998: } else {
5999: my @responses = split(/:/,$reply);
6000: if ($homeserver eq $perlvar{'lonHostID'}) {
6001: foreach my $line (@responses) {
6002: my ($key,$value) = split(/=/,$line,2);
6003: $$replyref{$key} = $value;
6004: }
6005: } else {
6006: my $pathname = LONCAPA::tempdir();
6007: foreach my $line (@responses) {
6008: my ($key,$value) = split(/=/,$line);
6009: $$replyref{$key} = $value;
6010: if ($value > 0) {
6011: foreach my $item (@{$$affiliatesref{$key}}) {
6012: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6013: my $destname = $pathname.'/'.$filename;
6014: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6015: if ($xml_classlist =~ /^error/) {
6016: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6017: } else {
6018: if ( open(FILE,">$destname") ) {
6019: print FILE &unescape($xml_classlist);
6020: close(FILE);
6021: } else {
6022: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6023: }
6024: }
6025: }
6026: }
6027: }
6028: }
6029: return 'ok';
6030: }
6031: return 'error';
6032: }
6033:
6034: sub get_query_reply {
6035: my $queryid=shift;
6036: my $replyfile=LONCAPA::tempdir().$queryid;
6037: my $reply='';
6038: for (1..100) {
6039: sleep 2;
6040: if (-e $replyfile.'.end') {
6041: if (open(my $fh,$replyfile)) {
6042: $reply = join('',<$fh>);
6043: close($fh);
6044: } else { return 'error: reply_file_error'; }
6045: return &unescape($reply);
6046: }
6047: }
6048: return 'timeout:'.$queryid;
6049: }
6050:
6051: sub courselog_query {
6052: #
6053: # possible filters:
6054: # url: url or symb
6055: # username
6056: # domain
6057: # action: view, submit, grade
6058: # start: timestamp
6059: # end: timestamp
6060: #
6061: my (%filters)=@_;
6062: unless ($env{'request.course.id'}) { return 'no_course'; }
6063: if ($filters{'url'}) {
6064: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6065: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6066: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6067: }
6068: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6069: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6070: return &log_query($cname,$cdom,'courselog',%filters);
6071: }
6072:
6073: sub userlog_query {
6074: #
6075: # possible filters:
6076: # action: log check role
6077: # start: timestamp
6078: # end: timestamp
6079: #
6080: my ($uname,$udom,%filters)=@_;
6081: return &log_query($uname,$udom,'userlog',%filters);
6082: }
6083:
6084: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6085:
6086: sub auto_run {
6087: my ($cnum,$cdom) = @_;
6088: my $response = 0;
6089: my $settings;
6090: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6091: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6092: $settings = $domconfig{'autoenroll'};
6093: if ($settings->{'run'} eq '1') {
6094: $response = 1;
6095: }
6096: } else {
6097: my $homeserver;
6098: if (&is_course($cdom,$cnum)) {
6099: $homeserver = &homeserver($cnum,$cdom);
6100: } else {
6101: $homeserver = &domain($cdom,'primary');
6102: }
6103: if ($homeserver ne 'no_host') {
6104: $response = &reply('autorun:'.$cdom,$homeserver);
6105: }
6106: }
6107: return $response;
6108: }
6109:
6110: sub auto_get_sections {
6111: my ($cnum,$cdom,$inst_coursecode) = @_;
6112: my $homeserver;
6113: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6114: $homeserver = &homeserver($cnum,$cdom);
6115: }
6116: if (!defined($homeserver)) {
6117: if ($cdom =~ /^$match_domain$/) {
6118: $homeserver = &domain($cdom,'primary');
6119: }
6120: }
6121: my @secs;
6122: if (defined($homeserver)) {
6123: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6124: unless ($response eq 'refused') {
6125: @secs = split(/:/,$response);
6126: }
6127: }
6128: return @secs;
6129: }
6130:
6131: sub auto_new_course {
6132: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6133: my $homeserver = &homeserver($cnum,$cdom);
6134: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6135: return $response;
6136: }
6137:
6138: sub auto_validate_courseID {
6139: my ($cnum,$cdom,$inst_course_id) = @_;
6140: my $homeserver = &homeserver($cnum,$cdom);
6141: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6142: return $response;
6143: }
6144:
6145: sub auto_validate_instcode {
6146: my ($cnum,$cdom,$instcode,$owner) = @_;
6147: my ($homeserver,$response);
6148: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6149: $homeserver = &homeserver($cnum,$cdom);
6150: }
6151: if (!defined($homeserver)) {
6152: if ($cdom =~ /^$match_domain$/) {
6153: $homeserver = &domain($cdom,'primary');
6154: }
6155: }
6156: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6157: &escape($instcode).':'.&escape($owner),$homeserver));
6158: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6159: return ($outcome,$description);
6160: }
6161:
6162: sub auto_create_password {
6163: my ($cnum,$cdom,$authparam,$udom) = @_;
6164: my ($homeserver,$response);
6165: my $create_passwd = 0;
6166: my $authchk = '';
6167: if ($udom =~ /^$match_domain$/) {
6168: $homeserver = &domain($udom,'primary');
6169: }
6170: if ($homeserver eq '') {
6171: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6172: $homeserver = &homeserver($cnum,$cdom);
6173: }
6174: }
6175: if ($homeserver eq '') {
6176: $authchk = 'nodomain';
6177: } else {
6178: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6179: if ($response eq 'refused') {
6180: $authchk = 'refused';
6181: } else {
6182: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6183: }
6184: }
6185: return ($authparam,$create_passwd,$authchk);
6186: }
6187:
6188: sub auto_photo_permission {
6189: my ($cnum,$cdom,$students) = @_;
6190: my $homeserver = &homeserver($cnum,$cdom);
6191: my ($outcome,$perm_reqd,$conditions) =
6192: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6193: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6194: return (undef,undef);
6195: }
6196: return ($outcome,$perm_reqd,$conditions);
6197: }
6198:
6199: sub auto_checkphotos {
6200: my ($uname,$udom,$pid) = @_;
6201: my $homeserver = &homeserver($uname,$udom);
6202: my ($result,$resulttype);
6203: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6204: &escape($uname).':'.&escape($pid),
6205: $homeserver));
6206: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6207: return (undef,undef);
6208: }
6209: if ($outcome) {
6210: ($result,$resulttype) = split(/:/,$outcome);
6211: }
6212: return ($result,$resulttype);
6213: }
6214:
6215: sub auto_photochoice {
6216: my ($cnum,$cdom) = @_;
6217: my $homeserver = &homeserver($cnum,$cdom);
6218: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6219: &escape($cdom),
6220: $homeserver)));
6221: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6222: return (undef,undef);
6223: }
6224: return ($update,$comment);
6225: }
6226:
6227: sub auto_photoupdate {
6228: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6229: my $homeserver = &homeserver($cnum,$dom);
6230: my $host=&hostname($homeserver);
6231: my $cmd = '';
6232: my $maxtries = 1;
6233: foreach my $affiliate (keys(%{$affiliatesref})) {
6234: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6235: }
6236: $cmd =~ s/%%$//;
6237: $cmd = &escape($cmd);
6238: my $query = 'institutionalphotos';
6239: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6240: unless ($queryid=~/^\Q$host\E\_/) {
6241: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6242: return 'error: '.$queryid;
6243: }
6244: my $reply = &get_query_reply($queryid);
6245: my $tries = 1;
6246: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6247: $reply = &get_query_reply($queryid);
6248: $tries ++;
6249: }
6250: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6251: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6252: } else {
6253: my @responses = split(/:/,$reply);
6254: my $outcome = shift(@responses);
6255: foreach my $item (@responses) {
6256: my ($key,$value) = split(/=/,$item);
6257: $$photo{$key} = $value;
6258: }
6259: return $outcome;
6260: }
6261: return 'error';
6262: }
6263:
6264: sub auto_instcode_format {
6265: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
6266: $cat_order) = @_;
6267: my $courses = '';
6268: my @homeservers;
6269: if ($caller eq 'global') {
6270: my %servers = &get_servers($codedom,'library');
6271: foreach my $tryserver (keys(%servers)) {
6272: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6273: push(@homeservers,$tryserver);
6274: }
6275: }
6276: } elsif ($caller eq 'requests') {
6277: if ($codedom =~ /^$match_domain$/) {
6278: my $chome = &domain($codedom,'primary');
6279: unless ($chome eq 'no_host') {
6280: push(@homeservers,$chome);
6281: }
6282: }
6283: } else {
6284: push(@homeservers,&homeserver($caller,$codedom));
6285: }
6286: foreach my $code (keys(%{$instcodes})) {
6287: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
6288: }
6289: chop($courses);
6290: my $ok_response = 0;
6291: my $response;
6292: while (@homeservers > 0 && $ok_response == 0) {
6293: my $server = shift(@homeservers);
6294: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
6295: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
6296: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
6297: split(/:/,$response);
6298: %{$codes} = (%{$codes},&str2hash($codes_str));
6299: push(@{$codetitles},&str2array($codetitles_str));
6300: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
6301: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
6302: $ok_response = 1;
6303: }
6304: }
6305: if ($ok_response) {
6306: return 'ok';
6307: } else {
6308: return $response;
6309: }
6310: }
6311:
6312: sub auto_instcode_defaults {
6313: my ($domain,$returnhash,$code_order) = @_;
6314: my @homeservers;
6315:
6316: my %servers = &get_servers($domain,'library');
6317: foreach my $tryserver (keys(%servers)) {
6318: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6319: push(@homeservers,$tryserver);
6320: }
6321: }
6322:
6323: my $response;
6324: foreach my $server (@homeservers) {
6325: $response=&reply('autoinstcodedefaults:'.$domain,$server);
6326: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6327:
6328: foreach my $pair (split(/\&/,$response)) {
6329: my ($name,$value)=split(/\=/,$pair);
6330: if ($name eq 'code_order') {
6331: @{$code_order} = split(/\&/,&unescape($value));
6332: } else {
6333: $returnhash->{&unescape($name)}=&unescape($value);
6334: }
6335: }
6336: return 'ok';
6337: }
6338:
6339: return $response;
6340: }
6341:
6342: sub auto_possible_instcodes {
6343: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
6344: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
6345: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
6346: return;
6347: }
6348: my (@homeservers,$uhome);
6349: if (defined(&domain($domain,'primary'))) {
6350: $uhome=&domain($domain,'primary');
6351: push(@homeservers,&domain($domain,'primary'));
6352: } else {
6353: my %servers = &get_servers($domain,'library');
6354: foreach my $tryserver (keys(%servers)) {
6355: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6356: push(@homeservers,$tryserver);
6357: }
6358: }
6359: }
6360: my $response;
6361: foreach my $server (@homeservers) {
6362: $response=&reply('autopossibleinstcodes:'.$domain,$server);
6363: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6364: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
6365: split(':',$response);
6366: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
6367: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
6368: foreach my $item (split('&',$cat_title)) {
6369: my ($name,$value)=split('=',$item);
6370: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
6371: }
6372: foreach my $item (split('&',$cat_order)) {
6373: my ($name,$value)=split('=',$item);
6374: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
6375: }
6376: return 'ok';
6377: }
6378: return $response;
6379: }
6380:
6381: sub auto_courserequest_checks {
6382: my ($dom) = @_;
6383: my ($homeserver,%validations);
6384: if ($dom =~ /^$match_domain$/) {
6385: $homeserver = &domain($dom,'primary');
6386: }
6387: unless ($homeserver eq 'no_host') {
6388: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
6389: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
6390: my @items = split(/&/,$response);
6391: foreach my $item (@items) {
6392: my ($key,$value) = split('=',$item);
6393: $validations{&unescape($key)} = &thaw_unescape($value);
6394: }
6395: }
6396: }
6397: return %validations;
6398: }
6399:
6400: sub auto_courserequest_validation {
6401: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
6402: my ($homeserver,$response);
6403: if ($dom =~ /^$match_domain$/) {
6404: $homeserver = &domain($dom,'primary');
6405: }
6406: unless ($homeserver eq 'no_host') {
6407:
6408: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
6409: ':'.&escape($crstype).':'.&escape($inststatuslist).
6410: ':'.&escape($instcode).':'.&escape($instseclist),
6411: $homeserver));
6412: }
6413: return $response;
6414: }
6415:
6416: sub auto_validate_class_sec {
6417: my ($cdom,$cnum,$owners,$inst_class) = @_;
6418: my $homeserver = &homeserver($cnum,$cdom);
6419: my $ownerlist;
6420: if (ref($owners) eq 'ARRAY') {
6421: $ownerlist = join(',',@{$owners});
6422: } else {
6423: $ownerlist = $owners;
6424: }
6425: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6426: &escape($ownerlist).':'.$cdom,$homeserver);
6427: return $response;
6428: }
6429:
6430: # ------------------------------------------------------- Course Group routines
6431:
6432: sub get_coursegroups {
6433: my ($cdom,$cnum,$group,$namespace) = @_;
6434: return(&dump($namespace,$cdom,$cnum,$group));
6435: }
6436:
6437: sub modify_coursegroup {
6438: my ($cdom,$cnum,$groupsettings) = @_;
6439: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6440: }
6441:
6442: sub toggle_coursegroup_status {
6443: my ($cdom,$cnum,$group,$action) = @_;
6444: my ($from_namespace,$to_namespace);
6445: if ($action eq 'delete') {
6446: $from_namespace = 'coursegroups';
6447: $to_namespace = 'deleted_groups';
6448: } else {
6449: $from_namespace = 'deleted_groups';
6450: $to_namespace = 'coursegroups';
6451: }
6452: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6453: if (my $tmp = &error(%curr_group)) {
6454: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6455: return ('read error',$tmp);
6456: } else {
6457: my %savedsettings = %curr_group;
6458: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6459: my $deloutcome;
6460: if ($result eq 'ok') {
6461: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6462: } else {
6463: return ('write error',$result);
6464: }
6465: if ($deloutcome eq 'ok') {
6466: return 'ok';
6467: } else {
6468: return ('delete error',$deloutcome);
6469: }
6470: }
6471: }
6472:
6473: sub modify_group_roles {
6474: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6475: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6476: my $role = 'gr/'.&escape($userprivs);
6477: my ($uname,$udom) = split(/:/,$user);
6478: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6479: if ($result eq 'ok') {
6480: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6481: }
6482: return $result;
6483: }
6484:
6485: sub modify_coursegroup_membership {
6486: my ($cdom,$cnum,$membership) = @_;
6487: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6488: return $result;
6489: }
6490:
6491: sub get_active_groups {
6492: my ($udom,$uname,$cdom,$cnum) = @_;
6493: my $now = time;
6494: my %groups = ();
6495: foreach my $key (keys(%env)) {
6496: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6497: my ($start,$end) = split(/\./,$env{$key});
6498: if (($end!=0) && ($end<$now)) { next; }
6499: if (($start!=0) && ($start>$now)) { next; }
6500: if ($1 eq $cdom && $2 eq $cnum) {
6501: $groups{$3} = $env{$key} ;
6502: }
6503: }
6504: }
6505: return %groups;
6506: }
6507:
6508: sub get_group_membership {
6509: my ($cdom,$cnum,$group) = @_;
6510: return(&dump('groupmembership',$cdom,$cnum,$group));
6511: }
6512:
6513: sub get_users_groups {
6514: my ($udom,$uname,$courseid) = @_;
6515: my @usersgroups;
6516: my $cachetime=1800;
6517:
6518: my $hashid="$udom:$uname:$courseid";
6519: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6520: if (defined($cached)) {
6521: @usersgroups = split(/:/,$grouplist);
6522: } else {
6523: $grouplist = '';
6524: my $courseurl = &courseid_to_courseurl($courseid);
6525: my $extra = &freeze_escape({'skipcheck' => 1});
6526: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
6527: my $access_end = $env{'course.'.$courseid.
6528: '.default_enrollment_end_date'};
6529: my $now = time;
6530: foreach my $key (keys(%roleshash)) {
6531: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6532: my $group = $1;
6533: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6534: my $start = $2;
6535: my $end = $1;
6536: if ($start == -1) { next; } # deleted from group
6537: if (($start!=0) && ($start>$now)) { next; }
6538: if (($end!=0) && ($end<$now)) {
6539: if ($access_end && $access_end < $now) {
6540: if ($access_end - $end < 86400) {
6541: push(@usersgroups,$group);
6542: }
6543: }
6544: next;
6545: }
6546: push(@usersgroups,$group);
6547: }
6548: }
6549: }
6550: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6551: $grouplist = join(':',@usersgroups);
6552: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6553: }
6554: return @usersgroups;
6555: }
6556:
6557: sub devalidate_getgroups_cache {
6558: my ($udom,$uname,$cdom,$cnum)=@_;
6559: my $courseid = $cdom.'_'.$cnum;
6560:
6561: my $hashid="$udom:$uname:$courseid";
6562: &devalidate_cache_new('getgroups',$hashid);
6563: }
6564:
6565: # ------------------------------------------------------------------ Plain Text
6566:
6567: sub plaintext {
6568: my ($short,$type,$cid,$forcedefault) = @_;
6569: if ($short =~ m{^cr/}) {
6570: return (split('/',$short))[-1];
6571: }
6572: if (!defined($cid)) {
6573: $cid = $env{'request.course.id'};
6574: }
6575: my %rolenames = (
6576: Course => 'std',
6577: Community => 'alt1',
6578: );
6579: if ($cid ne '') {
6580: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6581: unless ($forcedefault) {
6582: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6583: &Apache::lonlocal::mt_escape(\$roletext);
6584: return &Apache::lonlocal::mt($roletext);
6585: }
6586: }
6587: }
6588: if ((defined($type)) && (defined($rolenames{$type})) &&
6589: (defined($rolenames{$type})) &&
6590: (defined($prp{$short}{$rolenames{$type}}))) {
6591: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6592: } elsif ($cid ne '') {
6593: my $crstype = $env{'course.'.$cid.'.type'};
6594: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6595: (defined($prp{$short}{$rolenames{$crstype}}))) {
6596: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6597: }
6598: }
6599: return &Apache::lonlocal::mt($prp{$short}{'std'});
6600: }
6601:
6602: # ----------------------------------------------------------------- Assign Role
6603:
6604: sub assignrole {
6605: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6606: $context)=@_;
6607: my $mrole;
6608: if ($role =~ /^cr\//) {
6609: my $cwosec=$url;
6610: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6611: unless (&allowed('ccr',$cwosec)) {
6612: my $refused = 1;
6613: if ($context eq 'requestcourses') {
6614: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6615: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6616: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6617: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6618: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6619: if ($crsenv{'internal.courseowner'} eq
6620: $env{'user.name'}.':'.$env{'user.domain'}) {
6621: $refused = '';
6622: }
6623: }
6624: }
6625: }
6626: }
6627: if ($refused) {
6628: &logthis('Refused custom assignrole: '.
6629: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6630: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6631: return 'refused';
6632: }
6633: }
6634: $mrole='cr';
6635: } elsif ($role =~ /^gr\//) {
6636: my $cwogrp=$url;
6637: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6638: unless (&allowed('mdg',$cwogrp)) {
6639: &logthis('Refused group assignrole: '.
6640: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6641: $env{'user.name'}.' at '.$env{'user.domain'});
6642: return 'refused';
6643: }
6644: $mrole='gr';
6645: } else {
6646: my $cwosec=$url;
6647: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6648: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6649: my $refused;
6650: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6651: if (!(&allowed('c'.$role,$url))) {
6652: $refused = 1;
6653: }
6654: } else {
6655: $refused = 1;
6656: }
6657: if ($refused) {
6658: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6659: if (!$selfenroll && $context eq 'course') {
6660: my %crsenv;
6661: if ($role eq 'cc' || $role eq 'co') {
6662: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6663: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
6664: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
6665: if ($crsenv{'internal.courseowner'} eq
6666: $env{'user.name'}.':'.$env{'user.domain'}) {
6667: $refused = '';
6668: }
6669: }
6670: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
6671: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
6672: if ($crsenv{'internal.courseowner'} eq
6673: $env{'user.name'}.':'.$env{'user.domain'}) {
6674: $refused = '';
6675: }
6676: }
6677: }
6678: }
6679: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6680: $refused = '';
6681: } elsif ($context eq 'requestcourses') {
6682: my @possroles = ('st','ta','ep','in','cc','co');
6683: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6684: my $wrongcc;
6685: if ($cnum =~ /^$match_community$/) {
6686: $wrongcc = 1 if ($role eq 'cc');
6687: } else {
6688: $wrongcc = 1 if ($role eq 'co');
6689: }
6690: unless ($wrongcc) {
6691: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6692: if ($crsenv{'internal.courseowner'} eq
6693: $env{'user.name'}.':'.$env{'user.domain'}) {
6694: $refused = '';
6695: }
6696: }
6697: }
6698: }
6699: if ($refused) {
6700: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6701: ' '.$role.' '.$end.' '.$start.' by '.
6702: $env{'user.name'}.' at '.$env{'user.domain'});
6703: return 'refused';
6704: }
6705: }
6706: }
6707: $mrole=$role;
6708: }
6709: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6710: "$udom:$uname:$url".'_'."$mrole=$role";
6711: if ($end) { $command.='_'.$end; }
6712: if ($start) {
6713: if ($end) {
6714: $command.='_'.$start;
6715: } else {
6716: $command.='_0_'.$start;
6717: }
6718: }
6719: my $origstart = $start;
6720: my $origend = $end;
6721: my $delflag;
6722: # actually delete
6723: if ($deleteflag) {
6724: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6725: # modify command to delete the role
6726: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6727: "$udom:$uname:$url".'_'."$mrole";
6728: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6729: # set start and finish to negative values for userrolelog
6730: $start=-1;
6731: $end=-1;
6732: $delflag = 1;
6733: }
6734: }
6735: # send command
6736: my $answer=&reply($command,&homeserver($uname,$udom));
6737: # log new user role if status is ok
6738: if ($answer eq 'ok') {
6739: &userrolelog($role,$uname,$udom,$url,$start,$end);
6740: # for course roles, perform group memberships changes triggered by role change.
6741: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6742: unless ($role =~ /^gr/) {
6743: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6744: $origstart,$selfenroll,$context);
6745: }
6746: if ($role eq 'cc') {
6747: &autoupdate_coowners($url,$end,$start,$uname,$udom);
6748: }
6749: }
6750: return $answer;
6751: }
6752:
6753: sub autoupdate_coowners {
6754: my ($url,$end,$start,$uname,$udom) = @_;
6755: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
6756: if (($cdom ne '') && ($cnum ne '')) {
6757: my $now = time;
6758: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
6759: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
6760: my %coursehash = &coursedescription($cdom.'_'.$cnum);
6761: my $instcode = $coursehash{'internal.coursecode'};
6762: if ($instcode ne '') {
6763: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
6764: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
6765: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
6766: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
6767: if ($result eq 'valid') {
6768: if ($coursehash{'internal.co-owners'}) {
6769: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6770: push(@newcoowners,$coowner);
6771: }
6772: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
6773: push(@newcoowners,$uname.':'.$udom);
6774: }
6775: @newcoowners = sort(@newcoowners);
6776: } else {
6777: push(@newcoowners,$uname.':'.$udom);
6778: }
6779: } else {
6780: if ($coursehash{'internal.co-owners'}) {
6781: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6782: unless ($coowner eq $uname.':'.$udom) {
6783: push(@newcoowners,$coowner);
6784: }
6785: }
6786: unless (@newcoowners > 0) {
6787: $delcoowners = 1;
6788: $coowners = '';
6789: }
6790: }
6791: }
6792: if (@newcoowners || $delcoowners) {
6793: &store_coowners($cdom,$cnum,$coursehash{'home'},
6794: $delcoowners,@newcoowners);
6795: }
6796: }
6797: }
6798: }
6799: }
6800: }
6801: }
6802:
6803: sub store_coowners {
6804: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
6805: my $cid = $cdom.'_'.$cnum;
6806: my ($coowners,$delresult,$putresult);
6807: if (@newcoowners) {
6808: $coowners = join(',',@newcoowners);
6809: my %coownershash = (
6810: 'internal.co-owners' => $coowners,
6811: );
6812: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
6813: if ($putresult eq 'ok') {
6814: if ($env{'course.'.$cid.'.num'} eq $cnum) {
6815: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
6816: }
6817: }
6818: }
6819: if ($delcoowners) {
6820: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
6821: if ($delresult eq 'ok') {
6822: if ($env{'course.'.$cid.'.internal.co-owners'}) {
6823: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
6824: }
6825: }
6826: }
6827: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
6828: my %crsinfo =
6829: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6830: if (ref($crsinfo{$cid}) eq 'HASH') {
6831: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
6832: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
6833: }
6834: }
6835: }
6836:
6837: # -------------------------------------------------- Modify user authentication
6838: # Overrides without validation
6839:
6840: sub modifyuserauth {
6841: my ($udom,$uname,$umode,$upass)=@_;
6842: my $uhome=&homeserver($uname,$udom);
6843: unless (&allowed('mau',$udom)) { return 'refused'; }
6844: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6845: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6846: ' in domain '.$env{'request.role.domain'});
6847: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6848: &escape($upass),$uhome);
6849: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6850: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6851: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6852: &log($udom,,$uname,$uhome,
6853: 'Authentication changed by '.$env{'user.domain'}.', '.
6854: $env{'user.name'}.', '.$umode.
6855: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6856: unless ($reply eq 'ok') {
6857: &logthis('Authentication mode error: '.$reply);
6858: return 'error: '.$reply;
6859: }
6860: return 'ok';
6861: }
6862:
6863: # --------------------------------------------------------------- Modify a user
6864:
6865: sub modifyuser {
6866: my ($udom, $uname, $uid,
6867: $umode, $upass, $first,
6868: $middle, $last, $gene,
6869: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
6870: $udom= &LONCAPA::clean_domain($udom);
6871: $uname=&LONCAPA::clean_username($uname);
6872: my $showcandelete = 'none';
6873: if (ref($candelete) eq 'ARRAY') {
6874: if (@{$candelete} > 0) {
6875: $showcandelete = join(', ',@{$candelete});
6876: }
6877: }
6878: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6879: $umode.', '.$first.', '.$middle.', '.
6880: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
6881: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6882: ' desiredhome not specified').
6883: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6884: ' in domain '.$env{'request.role.domain'});
6885: my $uhome=&homeserver($uname,$udom,'true');
6886: my $newuser;
6887: if ($uhome eq 'no_host') {
6888: $newuser = 1;
6889: }
6890: # ----------------------------------------------------------------- Create User
6891: if (($uhome eq 'no_host') &&
6892: (($umode && $upass) || ($umode eq 'localauth'))) {
6893: my $unhome='';
6894: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6895: $unhome = $desiredhome;
6896: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6897: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6898: } else { # load balancing routine for determining $unhome
6899: my $loadm=10000000;
6900: my %servers = &get_servers($udom,'library');
6901: foreach my $tryserver (keys(%servers)) {
6902: my $answer=reply('load',$tryserver);
6903: if (($answer=~/\d+/) && ($answer<$loadm)) {
6904: $loadm=$answer;
6905: $unhome=$tryserver;
6906: }
6907: }
6908: }
6909: if (($unhome eq '') || ($unhome eq 'no_host')) {
6910: return 'error: unable to find a home server for '.$uname.
6911: ' in domain '.$udom;
6912: }
6913: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6914: &escape($upass),$unhome);
6915: unless ($reply eq 'ok') {
6916: return 'error: '.$reply;
6917: }
6918: $uhome=&homeserver($uname,$udom,'true');
6919: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6920: return 'error: unable verify users home machine.';
6921: }
6922: } # End of creation of new user
6923: # ---------------------------------------------------------------------- Add ID
6924: if ($uid) {
6925: $uid=~tr/A-Z/a-z/;
6926: my %uidhash=&idrget($udom,$uname);
6927: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6928: && (!$forceid)) {
6929: unless ($uid eq $uidhash{$uname}) {
6930: return 'error: user id "'.$uid.'" does not match '.
6931: 'current user id "'.$uidhash{$uname}.'".';
6932: }
6933: } else {
6934: &idput($udom,($uname => $uid));
6935: }
6936: }
6937: # -------------------------------------------------------------- Add names, etc
6938: my @tmp=&get('environment',
6939: ['firstname','middlename','lastname','generation','id',
6940: 'permanentemail','inststatus'],
6941: $udom,$uname);
6942: my (%names,%oldnames);
6943: if ($tmp[0] =~ m/^error:.*/) {
6944: %names=();
6945: } else {
6946: %names = @tmp;
6947: %oldnames = %names;
6948: }
6949: #
6950: # If name, email and/or uid are blank (e.g., because an uploaded file
6951: # of users did not contain them), do not overwrite existing values
6952: # unless field is in $candelete array ref.
6953: #
6954:
6955: my @fields = ('firstname','middlename','lastname','generation',
6956: 'permanentemail','id');
6957: my %newvalues;
6958: if (ref($candelete) eq 'ARRAY') {
6959: foreach my $field (@fields) {
6960: if (grep(/^\Q$field\E$/,@{$candelete})) {
6961: if ($field eq 'firstname') {
6962: $names{$field} = $first;
6963: } elsif ($field eq 'middlename') {
6964: $names{$field} = $middle;
6965: } elsif ($field eq 'lastname') {
6966: $names{$field} = $last;
6967: } elsif ($field eq 'generation') {
6968: $names{$field} = $gene;
6969: } elsif ($field eq 'permanentemail') {
6970: $names{$field} = $email;
6971: } elsif ($field eq 'id') {
6972: $names{$field} = $uid;
6973: }
6974: }
6975: }
6976: }
6977: if ($first) { $names{'firstname'} = $first; }
6978: if (defined($middle)) { $names{'middlename'} = $middle; }
6979: if ($last) { $names{'lastname'} = $last; }
6980: if (defined($gene)) { $names{'generation'} = $gene; }
6981: if ($email) {
6982: $email=~s/[^\w\@\.\-\,]//gs;
6983: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6984: }
6985: if ($uid) { $names{'id'} = $uid; }
6986: if (defined($inststatus)) {
6987: $names{'inststatus'} = '';
6988: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6989: if (ref($usertypes) eq 'HASH') {
6990: my @okstatuses;
6991: foreach my $item (split(/:/,$inststatus)) {
6992: if (defined($usertypes->{$item})) {
6993: push(@okstatuses,$item);
6994: }
6995: }
6996: if (@okstatuses) {
6997: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6998: }
6999: }
7000: }
7001: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7002: $umode.', '.$first.', '.$middle.', '.
7003: $last.', '.$gene.', '.$email.', '.$inststatus;
7004: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7005: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7006: } else {
7007: $logmsg .= ' during self creation';
7008: }
7009: my $changed;
7010: if ($newuser) {
7011: $changed = 1;
7012: } else {
7013: foreach my $field (@fields) {
7014: if ($names{$field} ne $oldnames{$field}) {
7015: $changed = 1;
7016: last;
7017: }
7018: }
7019: }
7020: unless ($changed) {
7021: $logmsg = 'No changes in user information needed for: '.$logmsg;
7022: &logthis($logmsg);
7023: return 'ok';
7024: }
7025: my $reply = &put('environment', \%names, $udom,$uname);
7026: if ($reply ne 'ok') {
7027: return 'error: '.$reply;
7028: }
7029: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7030: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7031: }
7032: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7033: &devalidate_cache_new('namescache',$uname.':'.$udom);
7034: $logmsg = 'Success modifying user '.$logmsg;
7035: &logthis($logmsg);
7036: return 'ok';
7037: }
7038:
7039: # -------------------------------------------------------------- Modify student
7040:
7041: sub modifystudent {
7042: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7043: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7044: $selfenroll,$context,$inststatus)=@_;
7045: if (!$cid) {
7046: unless ($cid=$env{'request.course.id'}) {
7047: return 'not_in_class';
7048: }
7049: }
7050: # --------------------------------------------------------------- Make the user
7051: my $reply=&modifyuser
7052: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7053: $desiredhome,$email,$inststatus);
7054: unless ($reply eq 'ok') { return $reply; }
7055: # This will cause &modify_student_enrollment to get the uid from the
7056: # students environment
7057: $uid = undef if (!$forceid);
7058: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7059: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7060: return $reply;
7061: }
7062:
7063: sub modify_student_enrollment {
7064: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7065: my ($cdom,$cnum,$chome);
7066: if (!$cid) {
7067: unless ($cid=$env{'request.course.id'}) {
7068: return 'not_in_class';
7069: }
7070: $cdom=$env{'course.'.$cid.'.domain'};
7071: $cnum=$env{'course.'.$cid.'.num'};
7072: } else {
7073: ($cdom,$cnum)=split(/_/,$cid);
7074: }
7075: $chome=$env{'course.'.$cid.'.home'};
7076: if (!$chome) {
7077: $chome=&homeserver($cnum,$cdom);
7078: }
7079: if (!$chome) { return 'unknown_course'; }
7080: # Make sure the user exists
7081: my $uhome=&homeserver($uname,$udom);
7082: if (($uhome eq '') || ($uhome eq 'no_host')) {
7083: return 'error: no such user';
7084: }
7085: # Get student data if we were not given enough information
7086: if (!defined($first) || $first eq '' ||
7087: !defined($last) || $last eq '' ||
7088: !defined($uid) || $uid eq '' ||
7089: !defined($middle) || $middle eq '' ||
7090: !defined($gene) || $gene eq '') {
7091: # They did not supply us with enough data to enroll the student, so
7092: # we need to pick up more information.
7093: my %tmp = &get('environment',
7094: ['firstname','middlename','lastname', 'generation','id']
7095: ,$udom,$uname);
7096:
7097: #foreach my $key (keys(%tmp)) {
7098: # &logthis("key $key = ".$tmp{$key});
7099: #}
7100: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7101: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7102: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7103: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7104: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7105: }
7106: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7107: my $reply=cput('classlist',
7108: {"$uname:$udom" =>
7109: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7110: $cdom,$cnum);
7111: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
7112: return 'error: '.$reply;
7113: } else {
7114: &devalidate_getsection_cache($udom,$uname,$cid);
7115: }
7116: # Add student role to user
7117: my $uurl='/'.$cid;
7118: $uurl=~s/\_/\//g;
7119: if ($usec) {
7120: $uurl.='/'.$usec;
7121: }
7122: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
7123: }
7124:
7125: sub format_name {
7126: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7127: my $name;
7128: if ($first ne 'lastname') {
7129: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7130: } else {
7131: if ($lastname=~/\S/) {
7132: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7133: $name=~s/\s+,/,/;
7134: } else {
7135: $name.= $firstname.' '.$middlename.' '.$generation;
7136: }
7137: }
7138: $name=~s/^\s+//;
7139: $name=~s/\s+$//;
7140: $name=~s/\s+/ /g;
7141: return $name;
7142: }
7143:
7144: # ------------------------------------------------- Write to course preferences
7145:
7146: sub writecoursepref {
7147: my ($courseid,%prefs)=@_;
7148: $courseid=~s/^\///;
7149: $courseid=~s/\_/\//g;
7150: my ($cdomain,$cnum)=split(/\//,$courseid);
7151: my $chome=homeserver($cnum,$cdomain);
7152: if (($chome eq '') || ($chome eq 'no_host')) {
7153: return 'error: no such course';
7154: }
7155: my $cstring='';
7156: foreach my $pref (keys(%prefs)) {
7157: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7158: }
7159: $cstring=~s/\&$//;
7160: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7161: }
7162:
7163: # ---------------------------------------------------------- Make/modify course
7164:
7165: sub createcourse {
7166: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7167: $course_owner,$crstype,$cnum,$context,$category)=@_;
7168: $url=&declutter($url);
7169: my $cid='';
7170: if ($context eq 'requestcourses') {
7171: my $can_create = 0;
7172: my ($ownername,$ownerdom) = split(':',$course_owner);
7173: if ($udom eq $ownerdom) {
7174: if (&usertools_access($ownername,$ownerdom,$category,undef,
7175: $context)) {
7176: $can_create = 1;
7177: }
7178: } else {
7179: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7180: $category);
7181: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7182: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7183: if (@curr > 0) {
7184: my @options = qw(approval validate autolimit);
7185: my $optregex = join('|',@options);
7186: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7187: $can_create = 1;
7188: }
7189: }
7190: }
7191: }
7192: if ($can_create) {
7193: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7194: unless (&allowed('ccc',$udom)) {
7195: return 'refused';
7196: }
7197: }
7198: } else {
7199: return 'refused';
7200: }
7201: } elsif (!&allowed('ccc',$udom)) {
7202: return 'refused';
7203: }
7204: # --------------------------------------------------------------- Get Unique ID
7205: my $uname;
7206: if ($cnum =~ /^$match_courseid$/) {
7207: my $chome=&homeserver($cnum,$udom,'true');
7208: if (($chome eq '') || ($chome eq 'no_host')) {
7209: $uname = $cnum;
7210: } else {
7211: $uname = &generate_coursenum($udom,$crstype);
7212: }
7213: } else {
7214: $uname = &generate_coursenum($udom,$crstype);
7215: }
7216: return $uname if ($uname =~ /^error/);
7217: # -------------------------------------------------- Check supplied server name
7218: if (!defined($course_server)) {
7219: if (defined(&domain($udom,'primary'))) {
7220: $course_server = &domain($udom,'primary');
7221: } else {
7222: $course_server = $env{'user.home'};
7223: }
7224: }
7225: my %host_servers =
7226: &Apache::lonnet::get_servers($udom,'library');
7227: unless ($host_servers{$course_server}) {
7228: return 'error: invalid home server for course: '.$course_server;
7229: }
7230: # ------------------------------------------------------------- Make the course
7231: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
7232: $course_server);
7233: unless ($reply eq 'ok') { return 'error: '.$reply; }
7234: my $uhome=&homeserver($uname,$udom,'true');
7235: if (($uhome eq '') || ($uhome eq 'no_host')) {
7236: return 'error: no such course';
7237: }
7238: # ----------------------------------------------------------------- Course made
7239: # log existence
7240: my $now = time;
7241: my $newcourse = {
7242: $udom.'_'.$uname => {
7243: description => $description,
7244: inst_code => $inst_code,
7245: owner => $course_owner,
7246: type => $crstype,
7247: creator => $env{'user.name'}.':'.
7248: $env{'user.domain'},
7249: created => $now,
7250: context => $context,
7251: },
7252: };
7253: &courseidput($udom,$newcourse,$uhome,'notime');
7254: # set toplevel url
7255: my $topurl=$url;
7256: unless ($nonstandard) {
7257: # ------------------------------------------ For standard courses, make top url
7258: my $mapurl=&clutter($url);
7259: if ($mapurl eq '/res/') { $mapurl=''; }
7260: $env{'form.initmap'}=(<<ENDINITMAP);
7261: <map>
7262: <resource id="1" type="start"></resource>
7263: <resource id="2" src="$mapurl"></resource>
7264: <resource id="3" type="finish"></resource>
7265: <link index="1" from="1" to="2"></link>
7266: <link index="2" from="2" to="3"></link>
7267: </map>
7268: ENDINITMAP
7269: $topurl=&declutter(
7270: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
7271: );
7272: }
7273: # ----------------------------------------------------------- Write preferences
7274: &writecoursepref($udom.'_'.$uname,
7275: ('description' => $description,
7276: 'url' => $topurl,
7277: 'internal.creator' => $env{'user.name'}.':'.
7278: $env{'user.domain'},
7279: 'internal.created' => $now,
7280: 'internal.creationcontext' => $context)
7281: );
7282: return '/'.$udom.'/'.$uname;
7283: }
7284:
7285: # ------------------------------------------------------------------- Create ID
7286: sub generate_coursenum {
7287: my ($udom,$crstype) = @_;
7288: my $domdesc = &domain($udom);
7289: return 'error: invalid domain' if ($domdesc eq '');
7290: my $first;
7291: if ($crstype eq 'Community') {
7292: $first = '0';
7293: } else {
7294: $first = int(1+rand(9));
7295: }
7296: my $uname=$first.
7297: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7298: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7299: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7300: # ----------------------------------------------- Make sure that does not exist
7301: my $uhome=&homeserver($uname,$udom,'true');
7302: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7303: if ($crstype eq 'Community') {
7304: $first = '0';
7305: } else {
7306: $first = int(1+rand(9));
7307: }
7308: $uname=$first.
7309: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7310: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7311: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7312: $uhome=&homeserver($uname,$udom,'true');
7313: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7314: return 'error: unable to generate unique course-ID';
7315: }
7316: }
7317: return $uname;
7318: }
7319:
7320: sub is_course {
7321: my ($cdom,$cnum) = @_;
7322: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
7323: undef,'.');
7324: if (exists($courses{$cdom.'_'.$cnum})) {
7325: return 1;
7326: }
7327: return 0;
7328: }
7329:
7330: sub store_userdata {
7331: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
7332: my $result;
7333: if ($datakey ne '') {
7334: if (ref($storehash) eq 'HASH') {
7335: if ($udom eq '' || $uname eq '') {
7336: $udom = $env{'user.domain'};
7337: $uname = $env{'user.name'};
7338: }
7339: my $uhome=&homeserver($uname,$udom);
7340: if (($uhome eq '') || ($uhome eq 'no_host')) {
7341: $result = 'error: no_host';
7342: } else {
7343: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
7344: $storehash->{'host'} = $perlvar{'lonHostID'};
7345:
7346: my $namevalue='';
7347: foreach my $key (keys(%{$storehash})) {
7348: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7349: }
7350: $namevalue=~s/\&$//;
7351: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
7352: $namevalue,$uhome);
7353: }
7354: } else {
7355: $result = 'error: data to store was not a hash reference';
7356: }
7357: } else {
7358: $result= 'error: invalid requestkey';
7359: }
7360: return $result;
7361: }
7362:
7363: # ---------------------------------------------------------- Assign Custom Role
7364:
7365: sub assigncustomrole {
7366: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
7367: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
7368: $end,$start,$deleteflag,$selfenroll,$context);
7369: }
7370:
7371: # ----------------------------------------------------------------- Revoke Role
7372:
7373: sub revokerole {
7374: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
7375: my $now=time;
7376: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
7377: }
7378:
7379: # ---------------------------------------------------------- Revoke Custom Role
7380:
7381: sub revokecustomrole {
7382: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
7383: my $now=time;
7384: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
7385: $deleteflag,$selfenroll,$context);
7386: }
7387:
7388: # ------------------------------------------------------------ Disk usage
7389: sub diskusage {
7390: my ($udom,$uname,$directorypath,$getpropath)=@_;
7391: $directorypath =~ s/\/$//;
7392: my $listing=&reply('du2:'.&escape($directorypath).':'
7393: .&escape($getpropath).':'.&escape($uname).':'
7394: .&escape($udom),homeserver($uname,$udom));
7395: if ($listing eq 'unknown_cmd') {
7396: if ($getpropath) {
7397: $directorypath = &propath($udom,$uname).'/'.$directorypath;
7398: }
7399: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
7400: }
7401: return $listing;
7402: }
7403:
7404: sub is_locked {
7405: my ($file_name, $domain, $user, $which) = @_;
7406: my @check;
7407: my $is_locked;
7408: push (@check,$file_name);
7409: my %locked = &get('file_permissions',\@check,
7410: $env{'user.domain'},$env{'user.name'});
7411: my ($tmp)=keys(%locked);
7412: if ($tmp=~/^error:/) { undef(%locked); }
7413:
7414: if (ref($locked{$file_name}) eq 'ARRAY') {
7415: $is_locked = 'false';
7416: foreach my $entry (@{$locked{$file_name}}) {
7417: if (ref($entry) eq 'ARRAY') {
7418: $is_locked = 'true';
7419: if (ref($which) eq 'ARRAY') {
7420: push(@{$which},$entry);
7421: } else {
7422: last;
7423: }
7424: }
7425: }
7426: } else {
7427: $is_locked = 'false';
7428: }
7429: return $is_locked;
7430: }
7431:
7432: sub declutter_portfile {
7433: my ($file) = @_;
7434: $file =~ s{^(/portfolio/|portfolio/)}{/};
7435: return $file;
7436: }
7437:
7438: # ------------------------------------------------------------- Mark as Read Only
7439:
7440: sub mark_as_readonly {
7441: my ($domain,$user,$files,$what) = @_;
7442: my %current_permissions = &dump('file_permissions',$domain,$user);
7443: my ($tmp)=keys(%current_permissions);
7444: if ($tmp=~/^error:/) { undef(%current_permissions); }
7445: foreach my $file (@{$files}) {
7446: $file = &declutter_portfile($file);
7447: push(@{$current_permissions{$file}},$what);
7448: }
7449: &put('file_permissions',\%current_permissions,$domain,$user);
7450: return;
7451: }
7452:
7453: # ------------------------------------------------------------Save Selected Files
7454:
7455: sub save_selected_files {
7456: my ($user, $path, @files) = @_;
7457: my $filename = $user."savedfiles";
7458: my @other_files = &files_not_in_path($user, $path);
7459: open (OUT, '>'.$tmpdir.$filename);
7460: foreach my $file (@files) {
7461: print (OUT $env{'form.currentpath'}.$file."\n");
7462: }
7463: foreach my $file (@other_files) {
7464: print (OUT $file."\n");
7465: }
7466: close (OUT);
7467: return 'ok';
7468: }
7469:
7470: sub clear_selected_files {
7471: my ($user) = @_;
7472: my $filename = $user."savedfiles";
7473: open (OUT, '>'.LONCAPA::tempdir().$filename);
7474: print (OUT undef);
7475: close (OUT);
7476: return ("ok");
7477: }
7478:
7479: sub files_in_path {
7480: my ($user, $path) = @_;
7481: my $filename = $user."savedfiles";
7482: my %return_files;
7483: open (IN, '<'.LONCAPA::tempdir().$filename);
7484: while (my $line_in = <IN>) {
7485: chomp ($line_in);
7486: my @paths_and_file = split (m!/!, $line_in);
7487: my $file_part = pop (@paths_and_file);
7488: my $path_part = join ('/', @paths_and_file);
7489: $path_part.='/';
7490: my $path_and_file = $path_part.$file_part;
7491: if ($path_part eq $path) {
7492: $return_files{$file_part}= 'selected';
7493: }
7494: }
7495: close (IN);
7496: return (\%return_files);
7497: }
7498:
7499: # called in portfolio select mode, to show files selected NOT in current directory
7500: sub files_not_in_path {
7501: my ($user, $path) = @_;
7502: my $filename = $user."savedfiles";
7503: my @return_files;
7504: my $path_part;
7505: open(IN, '<'.LONCAPA::.$filename);
7506: while (my $line = <IN>) {
7507: #ok, I know it's clunky, but I want it to work
7508: my @paths_and_file = split(m|/|, $line);
7509: my $file_part = pop(@paths_and_file);
7510: chomp($file_part);
7511: my $path_part = join('/', @paths_and_file);
7512: $path_part .= '/';
7513: my $path_and_file = $path_part.$file_part;
7514: if ($path_part ne $path) {
7515: push(@return_files, ($path_and_file));
7516: }
7517: }
7518: close(OUT);
7519: return (@return_files);
7520: }
7521:
7522: #----------------------------------------------Get portfolio file permissions
7523:
7524: sub get_portfile_permissions {
7525: my ($domain,$user) = @_;
7526: my %current_permissions = &dump('file_permissions',$domain,$user);
7527: my ($tmp)=keys(%current_permissions);
7528: if ($tmp=~/^error:/) { undef(%current_permissions); }
7529: return \%current_permissions;
7530: }
7531:
7532: #---------------------------------------------Get portfolio file access controls
7533:
7534: sub get_access_controls {
7535: my ($current_permissions,$group,$file) = @_;
7536: my %access;
7537: my $real_file = $file;
7538: $file =~ s/\.meta$//;
7539: if (defined($file)) {
7540: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
7541: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
7542: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
7543: }
7544: }
7545: } else {
7546: foreach my $key (keys(%{$current_permissions})) {
7547: if ($key =~ /\0accesscontrol$/) {
7548: if (defined($group)) {
7549: if ($key !~ m-^\Q$group\E/-) {
7550: next;
7551: }
7552: }
7553: my ($fullpath) = split(/\0/,$key);
7554: if (ref($$current_permissions{$key}) eq 'HASH') {
7555: foreach my $control (keys(%{$$current_permissions{$key}})) {
7556: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
7557: }
7558: }
7559: }
7560: }
7561: }
7562: return %access;
7563: }
7564:
7565: sub modify_access_controls {
7566: my ($file_name,$changes,$domain,$user)=@_;
7567: my ($outcome,$deloutcome);
7568: my %store_permissions;
7569: my %new_values;
7570: my %new_control;
7571: my %translation;
7572: my @deletions = ();
7573: my $now = time;
7574: if (exists($$changes{'activate'})) {
7575: if (ref($$changes{'activate'}) eq 'HASH') {
7576: my @newitems = sort(keys(%{$$changes{'activate'}}));
7577: my $numnew = scalar(@newitems);
7578: for (my $i=0; $i<$numnew; $i++) {
7579: my $newkey = $newitems[$i];
7580: my $newid = &Apache::loncommon::get_cgi_id();
7581: if ($newkey =~ /^\d+:/) {
7582: $newkey =~ s/^(\d+)/$newid/;
7583: $translation{$1} = $newid;
7584: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
7585: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
7586: $translation{$1} = $newid;
7587: }
7588: $new_values{$file_name."\0".$newkey} =
7589: $$changes{'activate'}{$newitems[$i]};
7590: $new_control{$newkey} = $now;
7591: }
7592: }
7593: }
7594: my %todelete;
7595: my %changed_items;
7596: foreach my $action ('delete','update') {
7597: if (exists($$changes{$action})) {
7598: if (ref($$changes{$action}) eq 'HASH') {
7599: foreach my $key (keys(%{$$changes{$action}})) {
7600: my ($itemnum) = ($key =~ /^([^:]+):/);
7601: if ($action eq 'delete') {
7602: $todelete{$itemnum} = 1;
7603: } else {
7604: $changed_items{$itemnum} = $key;
7605: }
7606: }
7607: }
7608: }
7609: }
7610: # get lock on access controls for file.
7611: my $lockhash = {
7612: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7613: ':'.$env{'user.domain'},
7614: };
7615: my $tries = 0;
7616: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7617:
7618: while (($gotlock ne 'ok') && $tries <3) {
7619: $tries ++;
7620: sleep 1;
7621: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7622: }
7623: if ($gotlock eq 'ok') {
7624: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7625: my ($tmp)=keys(%curr_permissions);
7626: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7627: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7628: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7629: if (ref($curr_controls) eq 'HASH') {
7630: foreach my $control_item (keys(%{$curr_controls})) {
7631: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7632: if (defined($todelete{$itemnum})) {
7633: push(@deletions,$file_name."\0".$control_item);
7634: } else {
7635: if (defined($changed_items{$itemnum})) {
7636: $new_control{$changed_items{$itemnum}} = $now;
7637: push(@deletions,$file_name."\0".$control_item);
7638: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7639: } else {
7640: $new_control{$control_item} = $$curr_controls{$control_item};
7641: }
7642: }
7643: }
7644: }
7645: }
7646: my ($group);
7647: if (&is_course($domain,$user)) {
7648: ($group,my $file) = split(/\//,$file_name,2);
7649: }
7650: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7651: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7652: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7653: # remove lock
7654: my @del_lock = ($file_name."\0".'locked_access_records');
7655: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7656: my $sqlresult =
7657: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7658: $group);
7659: } else {
7660: $outcome = "error: could not obtain lockfile\n";
7661: }
7662: return ($outcome,$deloutcome,\%new_values,\%translation);
7663: }
7664:
7665: sub make_public_indefinitely {
7666: my ($requrl) = @_;
7667: my $now = time;
7668: my $action = 'activate';
7669: my $aclnum = 0;
7670: if (&is_portfolio_url($requrl)) {
7671: my (undef,$udom,$unum,$file_name,$group) =
7672: &parse_portfolio_url($requrl);
7673: my $current_perms = &get_portfile_permissions($udom,$unum);
7674: my %access_controls = &get_access_controls($current_perms,
7675: $group,$file_name);
7676: foreach my $key (keys(%{$access_controls{$file_name}})) {
7677: my ($num,$scope,$end,$start) =
7678: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7679: if ($scope eq 'public') {
7680: if ($start <= $now && $end == 0) {
7681: $action = 'none';
7682: } else {
7683: $action = 'update';
7684: $aclnum = $num;
7685: }
7686: last;
7687: }
7688: }
7689: if ($action eq 'none') {
7690: return 'ok';
7691: } else {
7692: my %changes;
7693: my $newend = 0;
7694: my $newstart = $now;
7695: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7696: $changes{$action}{$newkey} = {
7697: type => 'public',
7698: time => {
7699: start => $newstart,
7700: end => $newend,
7701: },
7702: };
7703: my ($outcome,$deloutcome,$new_values,$translation) =
7704: &modify_access_controls($file_name,\%changes,$udom,$unum);
7705: return $outcome;
7706: }
7707: } else {
7708: return 'invalid';
7709: }
7710: }
7711:
7712: #------------------------------------------------------Get Marked as Read Only
7713:
7714: sub get_marked_as_readonly {
7715: my ($domain,$user,$what,$group) = @_;
7716: my $current_permissions = &get_portfile_permissions($domain,$user);
7717: my @readonly_files;
7718: my $cmp1=$what;
7719: if (ref($what)) { $cmp1=join('',@{$what}) };
7720: while (my ($file_name,$value) = each(%{$current_permissions})) {
7721: if (defined($group)) {
7722: if ($file_name !~ m-^\Q$group\E/-) {
7723: next;
7724: }
7725: }
7726: if (ref($value) eq "ARRAY"){
7727: foreach my $stored_what (@{$value}) {
7728: my $cmp2=$stored_what;
7729: if (ref($stored_what) eq 'ARRAY') {
7730: $cmp2=join('',@{$stored_what});
7731: }
7732: if ($cmp1 eq $cmp2) {
7733: push(@readonly_files, $file_name);
7734: last;
7735: } elsif (!defined($what)) {
7736: push(@readonly_files, $file_name);
7737: last;
7738: }
7739: }
7740: }
7741: }
7742: return @readonly_files;
7743: }
7744: #-----------------------------------------------------------Get Marked as Read Only Hash
7745:
7746: sub get_marked_as_readonly_hash {
7747: my ($current_permissions,$group,$what) = @_;
7748: my %readonly_files;
7749: while (my ($file_name,$value) = each(%{$current_permissions})) {
7750: if (defined($group)) {
7751: if ($file_name !~ m-^\Q$group\E/-) {
7752: next;
7753: }
7754: }
7755: if (ref($value) eq "ARRAY"){
7756: foreach my $stored_what (@{$value}) {
7757: if (ref($stored_what) eq 'ARRAY') {
7758: foreach my $lock_descriptor(@{$stored_what}) {
7759: if ($lock_descriptor eq 'graded') {
7760: $readonly_files{$file_name} = 'graded';
7761: } elsif ($lock_descriptor eq 'handback') {
7762: $readonly_files{$file_name} = 'handback';
7763: } else {
7764: if (!exists($readonly_files{$file_name})) {
7765: $readonly_files{$file_name} = 'locked';
7766: }
7767: }
7768: }
7769: }
7770: }
7771: }
7772: }
7773: return %readonly_files;
7774: }
7775: # ------------------------------------------------------------ Unmark as Read Only
7776:
7777: sub unmark_as_readonly {
7778: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7779: # for portfolio submissions, $what contains [$symb,$crsid]
7780: my ($domain,$user,$what,$file_name,$group) = @_;
7781: $file_name = &declutter_portfile($file_name);
7782: my $symb_crs = $what;
7783: if (ref($what)) { $symb_crs=join('',@$what); }
7784: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7785: my ($tmp)=keys(%current_permissions);
7786: if ($tmp=~/^error:/) { undef(%current_permissions); }
7787: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7788: foreach my $file (@readonly_files) {
7789: my $clean_file = &declutter_portfile($file);
7790: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7791: my $current_locks = $current_permissions{$file};
7792: my @new_locks;
7793: my @del_keys;
7794: if (ref($current_locks) eq "ARRAY"){
7795: foreach my $locker (@{$current_locks}) {
7796: my $compare=$locker;
7797: if (ref($locker) eq 'ARRAY') {
7798: $compare=join('',@{$locker});
7799: if ($compare ne $symb_crs) {
7800: push(@new_locks, $locker);
7801: }
7802: }
7803: }
7804: if (scalar(@new_locks) > 0) {
7805: $current_permissions{$file} = \@new_locks;
7806: } else {
7807: push(@del_keys, $file);
7808: &del('file_permissions',\@del_keys, $domain, $user);
7809: delete($current_permissions{$file});
7810: }
7811: }
7812: }
7813: &put('file_permissions',\%current_permissions,$domain,$user);
7814: return;
7815: }
7816:
7817: # ------------------------------------------------------------ Directory lister
7818:
7819: sub dirlist {
7820: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7821: $uri=~s/^\///;
7822: $uri=~s/\/$//;
7823: my ($udom, $uname);
7824: if ($getuserdir) {
7825: $udom = $userdomain;
7826: $uname = $username;
7827: } else {
7828: (undef,$udom,$uname)=split(/\//,$uri);
7829: if(defined($userdomain)) {
7830: $udom = $userdomain;
7831: }
7832: if(defined($username)) {
7833: $uname = $username;
7834: }
7835: }
7836: my ($dirRoot,$listing,@listing_results);
7837:
7838: $dirRoot = $perlvar{'lonDocRoot'};
7839: if (defined($getpropath)) {
7840: $dirRoot = &propath($udom,$uname);
7841: $dirRoot =~ s/\/$//;
7842: } elsif (defined($getuserdir)) {
7843: my $subdir=$uname.'__';
7844: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7845: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7846: ."/$udom/$subdir/$uname";
7847: } elsif (defined($alternateRoot)) {
7848: $dirRoot = $alternateRoot;
7849: }
7850:
7851: if($udom) {
7852: if($uname) {
7853: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7854: .$getuserdir.':'.&escape($dirRoot)
7855: .':'.&escape($uname).':'.&escape($udom),
7856: &homeserver($uname,$udom));
7857: if ($listing eq 'unknown_cmd') {
7858: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7859: &homeserver($uname,$udom));
7860: } else {
7861: @listing_results = map { &unescape($_); } split(/:/,$listing);
7862: }
7863: if ($listing eq 'unknown_cmd') {
7864: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7865: &homeserver($uname,$udom));
7866: @listing_results = split(/:/,$listing);
7867: } else {
7868: @listing_results = map { &unescape($_); } split(/:/,$listing);
7869: }
7870: return @listing_results;
7871: } elsif(!$alternateRoot) {
7872: my %allusers;
7873: my %servers = &get_servers($udom,'library');
7874: foreach my $tryserver (keys(%servers)) {
7875: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7876: &escape($udom),$tryserver);
7877: if ($listing eq 'unknown_cmd') {
7878: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7879: $udom, $tryserver);
7880: } else {
7881: @listing_results = map { &unescape($_); } split(/:/,$listing);
7882: }
7883: if ($listing eq 'unknown_cmd') {
7884: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7885: $udom, $tryserver);
7886: @listing_results = split(/:/,$listing);
7887: } else {
7888: @listing_results =
7889: map { &unescape($_); } split(/:/,$listing);
7890: }
7891: if ($listing_results[0] ne 'no_such_dir' &&
7892: $listing_results[0] ne 'empty' &&
7893: $listing_results[0] ne 'con_lost') {
7894: foreach my $line (@listing_results) {
7895: my ($entry) = split(/&/,$line,2);
7896: $allusers{$entry} = 1;
7897: }
7898: }
7899: }
7900: my $alluserstr='';
7901: foreach my $user (sort(keys(%allusers))) {
7902: $alluserstr.=$user.'&user:';
7903: }
7904: $alluserstr=~s/:$//;
7905: return split(/:/,$alluserstr);
7906: } else {
7907: return ('missing user name');
7908: }
7909: } elsif(!defined($getpropath)) {
7910: my @all_domains = sort(&all_domains());
7911: foreach my $domain (@all_domains) {
7912: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7913: }
7914: return @all_domains;
7915: } else {
7916: return ('missing domain');
7917: }
7918: }
7919:
7920: # --------------------------------------------- GetFileTimestamp
7921: # This function utilizes dirlist and returns the date stamp for
7922: # when it was last modified. It will also return an error of -1
7923: # if an error occurs
7924:
7925: sub GetFileTimestamp {
7926: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7927: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7928: $studentName = &LONCAPA::clean_username($studentName);
7929: my ($fileStat) =
7930: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7931: undef,$getuserdir);
7932: my @stats = split('&', $fileStat);
7933: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7934: # @stats contains first the filename, then the stat output
7935: return $stats[10]; # so this is 10 instead of 9.
7936: } else {
7937: return -1;
7938: }
7939: }
7940:
7941: sub stat_file {
7942: my ($uri) = @_;
7943: $uri = &clutter_with_no_wrapper($uri);
7944:
7945: my ($udom,$uname,$file);
7946: if ($uri =~ m-^/(uploaded|editupload)/-) {
7947: ($udom,$uname,$file) =
7948: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7949: $file = 'userfiles/'.$file;
7950: }
7951: if ($uri =~ m-^/res/-) {
7952: ($udom,$uname) =
7953: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7954: $file = $uri;
7955: }
7956:
7957: if (!$udom || !$uname || !$file) {
7958: # unable to handle the uri
7959: return ();
7960: }
7961: my $getpropath;
7962: if ($file =~ /^userfiles\//) {
7963: $getpropath = 1;
7964: }
7965: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7966: my @stats = split('&', $result);
7967:
7968: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7969: shift(@stats); #filename is first
7970: return @stats;
7971: }
7972: return ();
7973: }
7974:
7975: # -------------------------------------------------------- Value of a Condition
7976:
7977: # gets the value of a specific preevaluated condition
7978: # stored in the string $env{user.state.<cid>}
7979: # or looks up a condition reference in the bighash and if if hasn't
7980: # already been evaluated recurses into docondval to get the value of
7981: # the condition, then memoizing it to
7982: # $env{user.state.<cid>.<condition>}
7983: sub directcondval {
7984: my $number=shift;
7985: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7986: &Apache::lonuserstate::evalstate();
7987: }
7988: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7989: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7990: } elsif ($number =~ /^_/) {
7991: my $sub_condition;
7992: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7993: &GDBM_READER(),0640)) {
7994: $sub_condition=$bighash{'conditions'.$number};
7995: untie(%bighash);
7996: }
7997: my $value = &docondval($sub_condition);
7998: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7999: return $value;
8000: }
8001: if ($env{'user.state.'.$env{'request.course.id'}}) {
8002: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8003: } else {
8004: return 2;
8005: }
8006: }
8007:
8008: # get the collection of conditions for this resource
8009: sub condval {
8010: my $condidx=shift;
8011: my $allpathcond='';
8012: foreach my $cond (split(/\|/,$condidx)) {
8013: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8014: $allpathcond.=
8015: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8016: }
8017: }
8018: $allpathcond=~s/\|$//;
8019: return &docondval($allpathcond);
8020: }
8021:
8022: #evaluates an expression of conditions
8023: sub docondval {
8024: my ($allpathcond) = @_;
8025: my $result=0;
8026: if ($env{'request.course.id'}
8027: && defined($allpathcond)) {
8028: my $operand='|';
8029: my @stack;
8030: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8031: if ($chunk eq '(') {
8032: push @stack,($operand,$result);
8033: } elsif ($chunk eq ')') {
8034: my $before=pop @stack;
8035: if (pop @stack eq '&') {
8036: $result=$result>$before?$before:$result;
8037: } else {
8038: $result=$result>$before?$result:$before;
8039: }
8040: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8041: $operand=$chunk;
8042: } else {
8043: my $new=directcondval($chunk);
8044: if ($operand eq '&') {
8045: $result=$result>$new?$new:$result;
8046: } else {
8047: $result=$result>$new?$result:$new;
8048: }
8049: }
8050: }
8051: }
8052: return $result;
8053: }
8054:
8055: # ---------------------------------------------------- Devalidate courseresdata
8056:
8057: sub devalidatecourseresdata {
8058: my ($coursenum,$coursedomain)=@_;
8059: my $hashid=$coursenum.':'.$coursedomain;
8060: &devalidate_cache_new('courseres',$hashid);
8061: }
8062:
8063:
8064: # --------------------------------------------------- Course Resourcedata Query
8065: #
8066: # Parameters:
8067: # $coursenum - Number of the course.
8068: # $coursedomain - Domain at which the course was created.
8069: # Returns:
8070: # A hash of the course parameters along (I think) with timestamps
8071: # and version info.
8072:
8073: sub get_courseresdata {
8074: my ($coursenum,$coursedomain)=@_;
8075: my $coursehom=&homeserver($coursenum,$coursedomain);
8076: my $hashid=$coursenum.':'.$coursedomain;
8077: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8078: my %dumpreply;
8079: unless (defined($cached)) {
8080: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8081: $result=\%dumpreply;
8082: my ($tmp) = keys(%dumpreply);
8083: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8084: &do_cache_new('courseres',$hashid,$result,600);
8085: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8086: return $tmp;
8087: } elsif ($tmp =~ /^(error)/) {
8088: $result=undef;
8089: &do_cache_new('courseres',$hashid,$result,600);
8090: }
8091: }
8092: return $result;
8093: }
8094:
8095: sub devalidateuserresdata {
8096: my ($uname,$udom)=@_;
8097: my $hashid="$udom:$uname";
8098: &devalidate_cache_new('userres',$hashid);
8099: }
8100:
8101: sub get_userresdata {
8102: my ($uname,$udom)=@_;
8103: #most student don\'t have any data set, check if there is some data
8104: if (&EXT_cache_status($udom,$uname)) { return undef; }
8105:
8106: my $hashid="$udom:$uname";
8107: my ($result,$cached)=&is_cached_new('userres',$hashid);
8108: if (!defined($cached)) {
8109: my %resourcedata=&dump('resourcedata',$udom,$uname);
8110: $result=\%resourcedata;
8111: &do_cache_new('userres',$hashid,$result,600);
8112: }
8113: my ($tmp)=keys(%$result);
8114: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8115: return $result;
8116: }
8117: #error 2 occurs when the .db doesn't exist
8118: if ($tmp!~/error: 2 /) {
8119: &logthis("<font color=\"blue\">WARNING:".
8120: " Trying to get resource data for ".
8121: $uname." at ".$udom.": ".
8122: $tmp."</font>");
8123: } elsif ($tmp=~/error: 2 /) {
8124: #&EXT_cache_set($udom,$uname);
8125: &do_cache_new('userres',$hashid,undef,600);
8126: undef($tmp); # not really an error so don't send it back
8127: }
8128: return $tmp;
8129: }
8130: #----------------------------------------------- resdata - return resource data
8131: # Purpose:
8132: # Return resource data for either users or for a course.
8133: # Parameters:
8134: # $name - Course/user name.
8135: # $domain - Name of the domain the user/course is registered on.
8136: # $type - Type of thing $name is (must be 'course' or 'user'
8137: # @which - Array of names of resources desired.
8138: # Returns:
8139: # The value of the first reasource in @which that is found in the
8140: # resource hash.
8141: # Exceptional Conditions:
8142: # If the $type passed in is not valid (not the string 'course' or
8143: # 'user', an undefined reference is returned.
8144: # If none of the resources are found, an undef is returned
8145: sub resdata {
8146: my ($name,$domain,$type,@which)=@_;
8147: my $result;
8148: if ($type eq 'course') {
8149: $result=&get_courseresdata($name,$domain);
8150: } elsif ($type eq 'user') {
8151: $result=&get_userresdata($name,$domain);
8152: }
8153: if (!ref($result)) { return $result; }
8154: foreach my $item (@which) {
8155: if (defined($result->{$item->[0]})) {
8156: return [$result->{$item->[0]},$item->[1]];
8157: }
8158: }
8159: return undef;
8160: }
8161:
8162: #
8163: # EXT resource caching routines
8164: #
8165:
8166: sub clear_EXT_cache_status {
8167: &delenv('cache.EXT.');
8168: }
8169:
8170: sub EXT_cache_status {
8171: my ($target_domain,$target_user) = @_;
8172: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8173: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8174: # We know already the user has no data
8175: return 1;
8176: } else {
8177: return 0;
8178: }
8179: }
8180:
8181: sub EXT_cache_set {
8182: my ($target_domain,$target_user) = @_;
8183: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8184: #&appenv({$cachename => time});
8185: }
8186:
8187: # --------------------------------------------------------- Value of a Variable
8188: sub EXT {
8189:
8190: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8191: unless ($varname) { return ''; }
8192: #get real user name/domain, courseid and symb
8193: my $courseid;
8194: my $publicuser;
8195: if ($symbparm) {
8196: $symbparm=&get_symb_from_alias($symbparm);
8197: }
8198: if (!($uname && $udom)) {
8199: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8200: if (!$symbparm) { $symbparm=$cursymb; }
8201: } else {
8202: $courseid=$env{'request.course.id'};
8203: }
8204: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8205: my $rest;
8206: if (defined($therest[0])) {
8207: $rest=join('.',@therest);
8208: } else {
8209: $rest='';
8210: }
8211:
8212: my $qualifierrest=$qualifier;
8213: if ($rest) { $qualifierrest.='.'.$rest; }
8214: my $spacequalifierrest=$space;
8215: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
8216: if ($realm eq 'user') {
8217: # --------------------------------------------------------------- user.resource
8218: if ($space eq 'resource') {
8219: if ( (defined($Apache::lonhomework::parsing_a_problem)
8220: || defined($Apache::lonhomework::parsing_a_task))
8221: &&
8222: ($symbparm eq &symbread()) ) {
8223: # if we are in the middle of processing the resource the
8224: # get the value we are planning on committing
8225: if (defined($Apache::lonhomework::results{$qualifierrest})) {
8226: return $Apache::lonhomework::results{$qualifierrest};
8227: } else {
8228: return $Apache::lonhomework::history{$qualifierrest};
8229: }
8230: } else {
8231: my %restored;
8232: if ($publicuser || $env{'request.state'} eq 'construct') {
8233: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
8234: } else {
8235: %restored=&restore($symbparm,$courseid,$udom,$uname);
8236: }
8237: return $restored{$qualifierrest};
8238: }
8239: # ----------------------------------------------------------------- user.access
8240: } elsif ($space eq 'access') {
8241: # FIXME - not supporting calls for a specific user
8242: return &allowed($qualifier,$rest);
8243: # ------------------------------------------ user.preferences, user.environment
8244: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
8245: if (($uname eq $env{'user.name'}) &&
8246: ($udom eq $env{'user.domain'})) {
8247: return $env{join('.',('environment',$qualifierrest))};
8248: } else {
8249: my %returnhash;
8250: if (!$publicuser) {
8251: %returnhash=&userenvironment($udom,$uname,
8252: $qualifierrest);
8253: }
8254: return $returnhash{$qualifierrest};
8255: }
8256: # ----------------------------------------------------------------- user.course
8257: } elsif ($space eq 'course') {
8258: # FIXME - not supporting calls for a specific user
8259: return $env{join('.',('request.course',$qualifier))};
8260: # ------------------------------------------------------------------- user.role
8261: } elsif ($space eq 'role') {
8262: # FIXME - not supporting calls for a specific user
8263: my ($role,$where)=split(/\./,$env{'request.role'});
8264: if ($qualifier eq 'value') {
8265: return $role;
8266: } elsif ($qualifier eq 'extent') {
8267: return $where;
8268: }
8269: # ----------------------------------------------------------------- user.domain
8270: } elsif ($space eq 'domain') {
8271: return $udom;
8272: # ------------------------------------------------------------------- user.name
8273: } elsif ($space eq 'name') {
8274: return $uname;
8275: # ---------------------------------------------------- Any other user namespace
8276: } else {
8277: my %reply;
8278: if (!$publicuser) {
8279: %reply=&get($space,[$qualifierrest],$udom,$uname);
8280: }
8281: return $reply{$qualifierrest};
8282: }
8283: } elsif ($realm eq 'query') {
8284: # ---------------------------------------------- pull stuff out of query string
8285: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
8286: [$spacequalifierrest]);
8287: return $env{'form.'.$spacequalifierrest};
8288: } elsif ($realm eq 'request') {
8289: # ------------------------------------------------------------- request.browser
8290: if ($space eq 'browser') {
8291: if ($qualifier eq 'textremote') {
8292: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
8293: return 1;
8294: } else {
8295: return 0;
8296: }
8297: } else {
8298: return $env{'browser.'.$qualifier};
8299: }
8300: # ------------------------------------------------------------ request.filename
8301: } else {
8302: return $env{'request.'.$spacequalifierrest};
8303: }
8304: } elsif ($realm eq 'course') {
8305: # ---------------------------------------------------------- course.description
8306: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
8307: } elsif ($realm eq 'resource') {
8308:
8309: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
8310: if (!$symbparm) { $symbparm=&symbread(); }
8311: }
8312:
8313: if ($space eq 'title') {
8314: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
8315: return &gettitle($symbparm);
8316: }
8317:
8318: if ($space eq 'map') {
8319: my ($map) = &decode_symb($symbparm);
8320: return &symbread($map);
8321: }
8322: if ($space eq 'filename') {
8323: if ($symbparm) {
8324: return &clutter((&decode_symb($symbparm))[2]);
8325: }
8326: return &hreflocation('',$env{'request.filename'});
8327: }
8328:
8329: my ($section, $group, @groups);
8330: my ($courselevelm,$courselevel);
8331: if ($symbparm && defined($courseid) &&
8332: $courseid eq $env{'request.course.id'}) {
8333:
8334: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
8335:
8336: # ----------------------------------------------------- Cascading lookup scheme
8337: my $symbp=$symbparm;
8338: my $mapp=&deversion((&decode_symb($symbp))[0]);
8339:
8340: my $symbparm=$symbp.'.'.$spacequalifierrest;
8341: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
8342:
8343: if (($env{'user.name'} eq $uname) &&
8344: ($env{'user.domain'} eq $udom)) {
8345: $section=$env{'request.course.sec'};
8346: @groups = split(/:/,$env{'request.course.groups'});
8347: @groups=&sort_course_groups($courseid,@groups);
8348: } else {
8349: if (! defined($usection)) {
8350: $section=&getsection($udom,$uname,$courseid);
8351: } else {
8352: $section = $usection;
8353: }
8354: @groups = &get_users_groups($udom,$uname,$courseid);
8355: }
8356:
8357: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
8358: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
8359: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
8360:
8361: $courselevel=$courseid.'.'.$spacequalifierrest;
8362: my $courselevelr=$courseid.'.'.$symbparm;
8363: $courselevelm=$courseid.'.'.$mapparm;
8364:
8365: # ----------------------------------------------------------- first, check user
8366:
8367: my $userreply=&resdata($uname,$udom,'user',
8368: ([$courselevelr,'resource'],
8369: [$courselevelm,'map' ],
8370: [$courselevel, 'course' ]));
8371: if (defined($userreply)) { return &get_reply($userreply); }
8372:
8373: # ------------------------------------------------ second, check some of course
8374: my $coursereply;
8375: if (@groups > 0) {
8376: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
8377: $mapparm,$spacequalifierrest);
8378: if (defined($coursereply)) { return &get_reply($coursereply); }
8379: }
8380:
8381: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8382: $env{'course.'.$courseid.'.domain'},
8383: 'course',
8384: ([$seclevelr, 'resource'],
8385: [$seclevelm, 'map' ],
8386: [$seclevel, 'course' ],
8387: [$courselevelr,'resource']));
8388: if (defined($coursereply)) { return &get_reply($coursereply); }
8389:
8390: # ------------------------------------------------------ third, check map parms
8391: my %parmhash=();
8392: my $thisparm='';
8393: if (tie(%parmhash,'GDBM_File',
8394: $env{'request.course.fn'}.'_parms.db',
8395: &GDBM_READER(),0640)) {
8396: $thisparm=$parmhash{$symbparm};
8397: untie(%parmhash);
8398: }
8399: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
8400: }
8401: # ------------------------------------------ fourth, look in resource metadata
8402:
8403: $spacequalifierrest=~s/\./\_/;
8404: my $filename;
8405: if (!$symbparm) { $symbparm=&symbread(); }
8406: if ($symbparm) {
8407: $filename=(&decode_symb($symbparm))[2];
8408: } else {
8409: $filename=$env{'request.filename'};
8410: }
8411: my $metadata=&metadata($filename,$spacequalifierrest);
8412: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8413: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
8414: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8415:
8416: # ---------------------------------------------- fourth, look in rest of course
8417: if ($symbparm && defined($courseid) &&
8418: $courseid eq $env{'request.course.id'}) {
8419: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8420: $env{'course.'.$courseid.'.domain'},
8421: 'course',
8422: ([$courselevelm,'map' ],
8423: [$courselevel, 'course']));
8424: if (defined($coursereply)) { return &get_reply($coursereply); }
8425: }
8426: # ------------------------------------------------------------------ Cascade up
8427: unless ($space eq '0') {
8428: my @parts=split(/_/,$space);
8429: my $id=pop(@parts);
8430: my $part=join('_',@parts);
8431: if ($part eq '') { $part='0'; }
8432: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
8433: $symbparm,$udom,$uname,$section,1);
8434: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
8435: }
8436: if ($recurse) { return undef; }
8437: my $pack_def=&packages_tab_default($filename,$varname);
8438: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
8439: # ---------------------------------------------------- Any other user namespace
8440: } elsif ($realm eq 'environment') {
8441: # ----------------------------------------------------------------- environment
8442: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
8443: return $env{'environment.'.$spacequalifierrest};
8444: } else {
8445: if ($uname eq 'anonymous' && $udom eq '') {
8446: return '';
8447: }
8448: my %returnhash=&userenvironment($udom,$uname,
8449: $spacequalifierrest);
8450: return $returnhash{$spacequalifierrest};
8451: }
8452: } elsif ($realm eq 'system') {
8453: # ----------------------------------------------------------------- system.time
8454: if ($space eq 'time') {
8455: return time;
8456: }
8457: } elsif ($realm eq 'server') {
8458: # ----------------------------------------------------------------- system.time
8459: if ($space eq 'name') {
8460: return $ENV{'SERVER_NAME'};
8461: }
8462: }
8463: return '';
8464: }
8465:
8466: sub get_reply {
8467: my ($reply_value) = @_;
8468: if (ref($reply_value) eq 'ARRAY') {
8469: if (wantarray) {
8470: return @$reply_value;
8471: }
8472: return $reply_value->[0];
8473: } else {
8474: return $reply_value;
8475: }
8476: }
8477:
8478: sub check_group_parms {
8479: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
8480: my @groupitems = ();
8481: my $resultitem;
8482: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
8483: foreach my $group (@{$groups}) {
8484: foreach my $level (@levels) {
8485: my $item = $courseid.'.['.$group.'].'.$level->[0];
8486: push(@groupitems,[$item,$level->[1]]);
8487: }
8488: }
8489: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
8490: $env{'course.'.$courseid.'.domain'},
8491: 'course',@groupitems);
8492: return $coursereply;
8493: }
8494:
8495: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
8496: my ($courseid,@groups) = @_;
8497: @groups = sort(@groups);
8498: return @groups;
8499: }
8500:
8501: sub packages_tab_default {
8502: my ($uri,$varname)=@_;
8503: my (undef,$part,$name)=split(/\./,$varname);
8504:
8505: my (@extension,@specifics,$do_default);
8506: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
8507: my ($pack_type,$pack_part)=split(/_/,$package,2);
8508: if ($pack_type eq 'default') {
8509: $do_default=1;
8510: } elsif ($pack_type eq 'extension') {
8511: push(@extension,[$package,$pack_type,$pack_part]);
8512: } elsif ($pack_part eq $part || $pack_type eq 'part') {
8513: # only look at packages defaults for packages that this id is
8514: push(@specifics,[$package,$pack_type,$pack_part]);
8515: }
8516: }
8517: # first look for a package that matches the requested part id
8518: foreach my $package (@specifics) {
8519: my (undef,$pack_type,$pack_part)=@{$package};
8520: next if ($pack_part ne $part);
8521: if (defined($packagetab{"$pack_type&$name&default"})) {
8522: return $packagetab{"$pack_type&$name&default"};
8523: }
8524: }
8525: # look for any possible matching non extension_ package
8526: foreach my $package (@specifics) {
8527: my (undef,$pack_type,$pack_part)=@{$package};
8528: if (defined($packagetab{"$pack_type&$name&default"})) {
8529: return $packagetab{"$pack_type&$name&default"};
8530: }
8531: if ($pack_type eq 'part') { $pack_part='0'; }
8532: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
8533: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
8534: }
8535: }
8536: # look for any posible extension_ match
8537: foreach my $package (@extension) {
8538: my ($package,$pack_type)=@{$package};
8539: if (defined($packagetab{"$pack_type&$name&default"})) {
8540: return $packagetab{"$pack_type&$name&default"};
8541: }
8542: if (defined($packagetab{$package."&$name&default"})) {
8543: return $packagetab{$package."&$name&default"};
8544: }
8545: }
8546: # look for a global default setting
8547: if ($do_default && defined($packagetab{"default&$name&default"})) {
8548: return $packagetab{"default&$name&default"};
8549: }
8550: return undef;
8551: }
8552:
8553: sub add_prefix_and_part {
8554: my ($prefix,$part)=@_;
8555: my $keyroot;
8556: if (defined($prefix) && $prefix !~ /^__/) {
8557: # prefix that has a part already
8558: $keyroot=$prefix;
8559: } elsif (defined($prefix)) {
8560: # prefix that is missing a part
8561: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
8562: } else {
8563: # no prefix at all
8564: if (defined($part)) { $keyroot='_'.$part; }
8565: }
8566: return $keyroot;
8567: }
8568:
8569: # ---------------------------------------------------------------- Get metadata
8570:
8571: my %metaentry;
8572: my %importedpartids;
8573: sub metadata {
8574: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
8575: $uri=&declutter($uri);
8576: # if it is a non metadata possible uri return quickly
8577: if (($uri eq '') ||
8578: (($uri =~ m|^/*adm/|) &&
8579: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
8580: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
8581: return undef;
8582: }
8583: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
8584: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
8585: return undef;
8586: }
8587: my $filename=$uri;
8588: $uri=~s/\.meta$//;
8589: #
8590: # Is the metadata already cached?
8591: # Look at timestamp of caching
8592: # Everything is cached by the main uri, libraries are never directly cached
8593: #
8594: if (!defined($liburi)) {
8595: my ($result,$cached)=&is_cached_new('meta',$uri);
8596: if (defined($cached)) { return $result->{':'.$what}; }
8597: }
8598: {
8599: # Imported parts would go here
8600: my %importedids=();
8601: my @origfileimportpartids=();
8602: my $importedparts=0;
8603: #
8604: # Is this a recursive call for a library?
8605: #
8606: # if (! exists($metacache{$uri})) {
8607: # $metacache{$uri}={};
8608: # }
8609: my $cachetime = 60*60;
8610: if ($liburi) {
8611: $liburi=&declutter($liburi);
8612: $filename=$liburi;
8613: } else {
8614: &devalidate_cache_new('meta',$uri);
8615: undef(%metaentry);
8616: }
8617: my %metathesekeys=();
8618: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8619: my $metastring;
8620: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8621: my $which = &hreflocation('','/'.($liburi || $uri));
8622: $metastring =
8623: &Apache::lonnet::ssi_body($which,
8624: ('grade_target' => 'meta'));
8625: $cachetime = 1; # only want this cached in the child not long term
8626: } elsif (($uri !~ m -^(editupload)/-) &&
8627: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
8628: my $file=&filelocation('',&clutter($filename));
8629: #push(@{$metaentry{$uri.'.file'}},$file);
8630: $metastring=&getfile($file);
8631: }
8632: my $parser=HTML::LCParser->new(\$metastring);
8633: my $token;
8634: undef %metathesekeys;
8635: while ($token=$parser->get_token) {
8636: if ($token->[0] eq 'S') {
8637: if (defined($token->[2]->{'package'})) {
8638: #
8639: # This is a package - get package info
8640: #
8641: my $package=$token->[2]->{'package'};
8642: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8643: if (defined($token->[2]->{'id'})) {
8644: $keyroot.='_'.$token->[2]->{'id'};
8645: }
8646: if ($metaentry{':packages'}) {
8647: $metaentry{':packages'}.=','.$package.$keyroot;
8648: } else {
8649: $metaentry{':packages'}=$package.$keyroot;
8650: }
8651: foreach my $pack_entry (keys(%packagetab)) {
8652: my $part=$keyroot;
8653: $part=~s/^\_//;
8654: if ($pack_entry=~/^\Q$package\E\&/ ||
8655: $pack_entry=~/^\Q$package\E_0\&/) {
8656: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8657: # ignore package.tab specified default values
8658: # here &package_tab_default() will fetch those
8659: if ($subp eq 'default') { next; }
8660: my $value=$packagetab{$pack_entry};
8661: my $unikey;
8662: if ($pack =~ /_0$/) {
8663: $unikey='parameter_0_'.$name;
8664: $part=0;
8665: } else {
8666: $unikey='parameter'.$keyroot.'_'.$name;
8667: }
8668: if ($subp eq 'display') {
8669: $value.=' [Part: '.$part.']';
8670: }
8671: $metaentry{':'.$unikey.'.part'}=$part;
8672: $metathesekeys{$unikey}=1;
8673: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8674: $metaentry{':'.$unikey.'.'.$subp}=$value;
8675: }
8676: if (defined($metaentry{':'.$unikey.'.default'})) {
8677: $metaentry{':'.$unikey}=
8678: $metaentry{':'.$unikey.'.default'};
8679: }
8680: }
8681: }
8682: } else {
8683: #
8684: # This is not a package - some other kind of start tag
8685: #
8686: my $entry=$token->[1];
8687: my $unikey='';
8688:
8689: if ($entry eq 'import') {
8690: #
8691: # Importing a library here
8692: #
8693: my $location=$parser->get_text('/import');
8694: my $dir=$filename;
8695: $dir=~s|[^/]*$||;
8696: $location=&filelocation($dir,$location);
8697:
8698: my $importmode=$token->[2]->{'importmode'};
8699: if ($importmode eq 'problem') {
8700: # Import as problem/response
8701: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8702: } elsif ($importmode eq 'part') {
8703: # Import as part(s)
8704: $importedparts=1;
8705: # We need to get the original file and the imported file to get the part order correct
8706: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
8707: # Load and inspect original file
8708: if ($#origfileimportpartids<0) {
8709: undef(%importedpartids);
8710: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
8711: my $origfile=&getfile($origfilelocation);
8712: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8713: }
8714:
8715: # Load and inspect imported file
8716: my $impfile=&getfile($location);
8717: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8718: if ($#impfilepartids>=0) {
8719: # This problem had parts
8720: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
8721: } else {
8722: # Importing by turning a single problem into a problem part
8723: # It gets the import-tags ID as part-ID
8724: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
8725: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
8726: }
8727: } else {
8728: # Normal import
8729: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8730: if (defined($token->[2]->{'id'})) {
8731: $unikey.='_'.$token->[2]->{'id'};
8732: }
8733: }
8734:
8735: if ($depthcount<20) {
8736: my $metadata =
8737: &metadata($uri,'keys', $location,$unikey,
8738: $depthcount+1);
8739: foreach my $meta (split(',',$metadata)) {
8740: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8741: $metathesekeys{$meta}=1;
8742: }
8743:
8744: }
8745: } else {
8746: #
8747: # Not importing, some other kind of non-package, non-library start tag
8748: #
8749: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
8750: if (defined($token->[2]->{'id'})) {
8751: $unikey.='_'.$token->[2]->{'id'};
8752: }
8753: if (defined($token->[2]->{'name'})) {
8754: $unikey.='_'.$token->[2]->{'name'};
8755: }
8756: $metathesekeys{$unikey}=1;
8757: foreach my $param (@{$token->[3]}) {
8758: $metaentry{':'.$unikey.'.'.$param} =
8759: $token->[2]->{$param};
8760: }
8761: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8762: my $default=$metaentry{':'.$unikey.'.default'};
8763: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8764: # only ws inside the tag, and not in default, so use default
8765: # as value
8766: $metaentry{':'.$unikey}=$default;
8767: } elsif ( $internaltext =~ /\S/ ) {
8768: # something interesting inside the tag
8769: $metaentry{':'.$unikey}=$internaltext;
8770: } else {
8771: # no interesting values, don't set a default
8772: }
8773: # end of not-a-package not-a-library import
8774: }
8775: # end of not-a-package start tag
8776: }
8777: # the next is the end of "start tag"
8778: }
8779: }
8780: my ($extension) = ($uri =~ /\.(\w+)$/);
8781: $extension = lc($extension);
8782: if ($extension eq 'htm') { $extension='html'; }
8783:
8784: foreach my $key (keys(%packagetab)) {
8785: #no specific packages #how's our extension
8786: if ($key!~/^extension_\Q$extension\E&/) { next; }
8787: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8788: \%metathesekeys);
8789: }
8790:
8791: if (!exists($metaentry{':packages'})
8792: || $packagetab{"import_defaults&extension_$extension"}) {
8793: foreach my $key (keys(%packagetab)) {
8794: #no specific packages well let's get default then
8795: if ($key!~/^default&/) { next; }
8796: &metadata_create_package_def($uri,$key,'default',
8797: \%metathesekeys);
8798: }
8799: }
8800: # are there custom rights to evaluate
8801: if ($metaentry{':copyright'} eq 'custom') {
8802:
8803: #
8804: # Importing a rights file here
8805: #
8806: unless ($depthcount) {
8807: my $location=$metaentry{':customdistributionfile'};
8808: my $dir=$filename;
8809: $dir=~s|[^/]*$||;
8810: $location=&filelocation($dir,$location);
8811: my $rights_metadata =
8812: &metadata($uri,'keys',$location,'_rights',
8813: $depthcount+1);
8814: foreach my $rights (split(',',$rights_metadata)) {
8815: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8816: $metathesekeys{$rights}=1;
8817: }
8818: }
8819: }
8820: # uniqifiy package listing
8821: my %seen;
8822: my @uniq_packages =
8823: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8824: $metaentry{':packages'} = join(',',@uniq_packages);
8825:
8826: if ($importedparts) {
8827: # We had imported parts and need to rebuild partorder
8828: $metaentry{':partorder'}='';
8829: $metathesekeys{'partorder'}=1;
8830: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
8831: if ($origfileimportpartids[$index] eq 'part') {
8832: # original part, part of the problem
8833: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
8834: } else {
8835: # we have imported parts at this position
8836: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
8837: }
8838: }
8839: $metaentry{':partorder'}=~s/^\,//;
8840: }
8841:
8842: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8843: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8844: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8845: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8846: # this is the end of "was not already recently cached
8847: }
8848: return $metaentry{':'.$what};
8849: }
8850:
8851: sub metadata_create_package_def {
8852: my ($uri,$key,$package,$metathesekeys)=@_;
8853: my ($pack,$name,$subp)=split(/\&/,$key);
8854: if ($subp eq 'default') { next; }
8855:
8856: if (defined($metaentry{':packages'})) {
8857: $metaentry{':packages'}.=','.$package;
8858: } else {
8859: $metaentry{':packages'}=$package;
8860: }
8861: my $value=$packagetab{$key};
8862: my $unikey;
8863: $unikey='parameter_0_'.$name;
8864: $metaentry{':'.$unikey.'.part'}=0;
8865: $$metathesekeys{$unikey}=1;
8866: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8867: $metaentry{':'.$unikey.'.'.$subp}=$value;
8868: }
8869: if (defined($metaentry{':'.$unikey.'.default'})) {
8870: $metaentry{':'.$unikey}=
8871: $metaentry{':'.$unikey.'.default'};
8872: }
8873: }
8874:
8875: sub metadata_generate_part0 {
8876: my ($metadata,$metacache,$uri) = @_;
8877: my %allnames;
8878: foreach my $metakey (keys(%$metadata)) {
8879: if ($metakey=~/^parameter\_(.*)/) {
8880: my $part=$$metacache{':'.$metakey.'.part'};
8881: my $name=$$metacache{':'.$metakey.'.name'};
8882: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8883: $allnames{$name}=$part;
8884: }
8885: }
8886: }
8887: foreach my $name (keys(%allnames)) {
8888: $$metadata{"parameter_0_$name"}=1;
8889: my $key=":parameter_0_$name";
8890: $$metacache{"$key.part"}='0';
8891: $$metacache{"$key.name"}=$name;
8892: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8893: $allnames{$name}.'_'.$name.
8894: '.type'};
8895: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8896: '.display'};
8897: my $expr='[Part: '.$allnames{$name}.']';
8898: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8899: $$metacache{"$key.display"}=$olddis;
8900: }
8901: }
8902:
8903: # ------------------------------------------------------ Devalidate title cache
8904:
8905: sub devalidate_title_cache {
8906: my ($url)=@_;
8907: if (!$env{'request.course.id'}) { return; }
8908: my $symb=&symbread($url);
8909: if (!$symb) { return; }
8910: my $key=$env{'request.course.id'}."\0".$symb;
8911: &devalidate_cache_new('title',$key);
8912: }
8913:
8914: # ------------------------------------------------- Get the title of a course
8915:
8916: sub current_course_title {
8917: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8918: }
8919: # ------------------------------------------------- Get the title of a resource
8920:
8921: sub gettitle {
8922: my $urlsymb=shift;
8923: my $symb=&symbread($urlsymb);
8924: if ($symb) {
8925: my $key=$env{'request.course.id'}."\0".$symb;
8926: my ($result,$cached)=&is_cached_new('title',$key);
8927: if (defined($cached)) {
8928: return $result;
8929: }
8930: my ($map,$resid,$url)=&decode_symb($symb);
8931: my $title='';
8932: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8933: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8934: } else {
8935: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8936: &GDBM_READER(),0640)) {
8937: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8938: $title=$bighash{'title_'.$mapid.'.'.$resid};
8939: untie(%bighash);
8940: }
8941: }
8942: $title=~s/\&colon\;/\:/gs;
8943: if ($title) {
8944: return &do_cache_new('title',$key,$title,600);
8945: }
8946: $urlsymb=$url;
8947: }
8948: my $title=&metadata($urlsymb,'title');
8949: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8950: return $title;
8951: }
8952:
8953: sub get_slot {
8954: my ($which,$cnum,$cdom)=@_;
8955: if (!$cnum || !$cdom) {
8956: (undef,my $courseid)=&whichuser();
8957: $cdom=$env{'course.'.$courseid.'.domain'};
8958: $cnum=$env{'course.'.$courseid.'.num'};
8959: }
8960: my $key=join("\0",'slots',$cdom,$cnum,$which);
8961: my %slotinfo;
8962: if (exists($remembered{$key})) {
8963: $slotinfo{$which} = $remembered{$key};
8964: } else {
8965: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8966: &Apache::lonhomework::showhash(%slotinfo);
8967: my ($tmp)=keys(%slotinfo);
8968: if ($tmp=~/^error:/) { return (); }
8969: $remembered{$key} = $slotinfo{$which};
8970: }
8971: if (ref($slotinfo{$which}) eq 'HASH') {
8972: return %{$slotinfo{$which}};
8973: }
8974: return $slotinfo{$which};
8975: }
8976: # ------------------------------------------------- Update symbolic store links
8977:
8978: sub symblist {
8979: my ($mapname,%newhash)=@_;
8980: $mapname=&deversion(&declutter($mapname));
8981: my %hash;
8982: if (($env{'request.course.fn'}) && (%newhash)) {
8983: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8984: &GDBM_WRCREAT(),0640)) {
8985: foreach my $url (keys(%newhash)) {
8986: next if ($url eq 'last_known'
8987: && $env{'form.no_update_last_known'});
8988: $hash{declutter($url)}=&encode_symb($mapname,
8989: $newhash{$url}->[1],
8990: $newhash{$url}->[0]);
8991: }
8992: if (untie(%hash)) {
8993: return 'ok';
8994: }
8995: }
8996: }
8997: return 'error';
8998: }
8999:
9000: # --------------------------------------------------------------- Verify a symb
9001:
9002: sub symbverify {
9003: my ($symb,$thisurl)=@_;
9004: my $thisfn=$thisurl;
9005: $thisfn=&declutter($thisfn);
9006: # direct jump to resource in page or to a sequence - will construct own symbs
9007: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
9008: # check URL part
9009: my ($map,$resid,$url)=&decode_symb($symb);
9010:
9011: unless ($url eq $thisfn) { return 0; }
9012:
9013: $symb=&symbclean($symb);
9014: $thisurl=&deversion($thisurl);
9015: $thisfn=&deversion($thisfn);
9016:
9017: my %bighash;
9018: my $okay=0;
9019:
9020: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9021: &GDBM_READER(),0640)) {
9022: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9023: $thisurl =~ s/\?.+$//;
9024: }
9025: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9026: unless ($ids) {
9027: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9028: $ids=$bighash{$idkey};
9029: }
9030: if ($ids) {
9031: # ------------------------------------------------------------------- Has ID(s)
9032: foreach my $id (split(/\,/,$ids)) {
9033: my ($mapid,$resid)=split(/\./,$id);
9034: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9035: $symb =~ s/\?.+$//;
9036: }
9037: if (
9038: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9039: eq $symb) {
9040: if (($env{'request.role.adv'}) ||
9041: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9042: ($thisurl eq '/adm/navmaps')) {
9043: $okay=1;
9044: }
9045: }
9046: }
9047: }
9048: untie(%bighash);
9049: }
9050: return $okay;
9051: }
9052:
9053: # --------------------------------------------------------------- Clean-up symb
9054:
9055: sub symbclean {
9056: my $symb=shift;
9057: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9058: # remove version from map
9059: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9060:
9061: # remove version from URL
9062: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9063:
9064: # remove wrapper
9065:
9066: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9067: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9068: return $symb;
9069: }
9070:
9071: # ---------------------------------------------- Split symb to find map and url
9072:
9073: sub encode_symb {
9074: my ($map,$resid,$url)=@_;
9075: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9076: }
9077:
9078: sub decode_symb {
9079: my $symb=shift;
9080: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9081: my ($map,$resid,$url)=split(/___/,$symb);
9082: return (&fixversion($map),$resid,&fixversion($url));
9083: }
9084:
9085: sub fixversion {
9086: my $fn=shift;
9087: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9088: my %bighash;
9089: my $uri=&clutter($fn);
9090: my $key=$env{'request.course.id'}.'_'.$uri;
9091: # is this cached?
9092: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9093: if (defined($cached)) { return $result; }
9094: # unfortunately not cached, or expired
9095: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9096: &GDBM_READER(),0640)) {
9097: if ($bighash{'version_'.$uri}) {
9098: my $version=$bighash{'version_'.$uri};
9099: unless (($version eq 'mostrecent') ||
9100: ($version==&getversion($uri))) {
9101: $uri=~s/\.(\w+)$/\.$version\.$1/;
9102: }
9103: }
9104: untie %bighash;
9105: }
9106: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9107: }
9108:
9109: sub deversion {
9110: my $url=shift;
9111: $url=~s/\.\d+\.(\w+)$/\.$1/;
9112: return $url;
9113: }
9114:
9115: # ------------------------------------------------------ Return symb list entry
9116:
9117: sub symbread {
9118: my ($thisfn,$donotrecurse)=@_;
9119: my $cache_str='request.symbread.cached.'.$thisfn;
9120: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9121: # no filename provided? try from environment
9122: unless ($thisfn) {
9123: if ($env{'request.symb'}) {
9124: return $env{$cache_str}=&symbclean($env{'request.symb'});
9125: }
9126: $thisfn=$env{'request.filename'};
9127: }
9128: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9129: # is that filename actually a symb? Verify, clean, and return
9130: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9131: if (&symbverify($thisfn,$1)) {
9132: return $env{$cache_str}=&symbclean($thisfn);
9133: }
9134: }
9135: $thisfn=declutter($thisfn);
9136: my %hash;
9137: my %bighash;
9138: my $syval='';
9139: if (($env{'request.course.fn'}) && ($thisfn)) {
9140: my $targetfn = $thisfn;
9141: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9142: $targetfn = 'adm/wrapper/'.$thisfn;
9143: }
9144: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9145: $targetfn=$1;
9146: }
9147: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9148: &GDBM_READER(),0640)) {
9149: $syval=$hash{$targetfn};
9150: untie(%hash);
9151: }
9152: # ---------------------------------------------------------- There was an entry
9153: if ($syval) {
9154: #unless ($syval=~/\_\d+$/) {
9155: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9156: #&appenv({'request.ambiguous' => $thisfn});
9157: #return $env{$cache_str}='';
9158: #}
9159: #$syval.=$1;
9160: #}
9161: } else {
9162: # ------------------------------------------------------- Was not in symb table
9163: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9164: &GDBM_READER(),0640)) {
9165: # ---------------------------------------------- Get ID(s) for current resource
9166: my $ids=$bighash{'ids_'.&clutter($thisfn)};
9167: unless ($ids) {
9168: $ids=$bighash{'ids_/'.$thisfn};
9169: }
9170: unless ($ids) {
9171: # alias?
9172: $ids=$bighash{'mapalias_'.$thisfn};
9173: }
9174: if ($ids) {
9175: # ------------------------------------------------------------------- Has ID(s)
9176: my @possibilities=split(/\,/,$ids);
9177: if ($#possibilities==0) {
9178: # ----------------------------------------------- There is only one possibility
9179: my ($mapid,$resid)=split(/\./,$ids);
9180: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9181: $resid,$thisfn);
9182: } elsif (!$donotrecurse) {
9183: # ------------------------------------------ There is more than one possibility
9184: my $realpossible=0;
9185: foreach my $id (@possibilities) {
9186: my $file=$bighash{'src_'.$id};
9187: if (&allowed('bre',$file)) {
9188: my ($mapid,$resid)=split(/\./,$id);
9189: if ($bighash{'map_type_'.$mapid} ne 'page') {
9190: $realpossible++;
9191: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9192: $resid,$thisfn);
9193: }
9194: }
9195: }
9196: if ($realpossible!=1) { $syval=''; }
9197: } else {
9198: $syval='';
9199: }
9200: }
9201: untie(%bighash)
9202: }
9203: }
9204: if ($syval) {
9205: return $env{$cache_str}=$syval;
9206: }
9207: }
9208: &appenv({'request.ambiguous' => $thisfn});
9209: return $env{$cache_str}='';
9210: }
9211:
9212: # ---------------------------------------------------------- Return random seed
9213:
9214: sub numval {
9215: my $txt=shift;
9216: $txt=~tr/A-J/0-9/;
9217: $txt=~tr/a-j/0-9/;
9218: $txt=~tr/K-T/0-9/;
9219: $txt=~tr/k-t/0-9/;
9220: $txt=~tr/U-Z/0-5/;
9221: $txt=~tr/u-z/0-5/;
9222: $txt=~s/\D//g;
9223: if ($_64bit) { if ($txt > 2**32) { return -1; } }
9224: return int($txt);
9225: }
9226:
9227: sub numval2 {
9228: my $txt=shift;
9229: $txt=~tr/A-J/0-9/;
9230: $txt=~tr/a-j/0-9/;
9231: $txt=~tr/K-T/0-9/;
9232: $txt=~tr/k-t/0-9/;
9233: $txt=~tr/U-Z/0-5/;
9234: $txt=~tr/u-z/0-5/;
9235: $txt=~s/\D//g;
9236: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9237: my $total;
9238: foreach my $val (@txts) { $total+=$val; }
9239: if ($_64bit) { if ($total > 2**32) { return -1; } }
9240: return int($total);
9241: }
9242:
9243: sub numval3 {
9244: use integer;
9245: my $txt=shift;
9246: $txt=~tr/A-J/0-9/;
9247: $txt=~tr/a-j/0-9/;
9248: $txt=~tr/K-T/0-9/;
9249: $txt=~tr/k-t/0-9/;
9250: $txt=~tr/U-Z/0-5/;
9251: $txt=~tr/u-z/0-5/;
9252: $txt=~s/\D//g;
9253: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9254: my $total;
9255: foreach my $val (@txts) { $total+=$val; }
9256: if ($_64bit) { $total=(($total<<32)>>32); }
9257: return $total;
9258: }
9259:
9260: sub digest {
9261: my ($data)=@_;
9262: my $digest=&Digest::MD5::md5($data);
9263: my ($a,$b,$c,$d)=unpack("iiii",$digest);
9264: my ($e,$f);
9265: {
9266: use integer;
9267: $e=($a+$b);
9268: $f=($c+$d);
9269: if ($_64bit) {
9270: $e=(($e<<32)>>32);
9271: $f=(($f<<32)>>32);
9272: }
9273: }
9274: if (wantarray) {
9275: return ($e,$f);
9276: } else {
9277: my $g;
9278: {
9279: use integer;
9280: $g=($e+$f);
9281: if ($_64bit) {
9282: $g=(($g<<32)>>32);
9283: }
9284: }
9285: return $g;
9286: }
9287: }
9288:
9289: sub latest_rnd_algorithm_id {
9290: return '64bit5';
9291: }
9292:
9293: sub get_rand_alg {
9294: my ($courseid)=@_;
9295: if (!$courseid) { $courseid=(&whichuser())[1]; }
9296: if ($courseid) {
9297: return $env{"course.$courseid.rndseed"};
9298: }
9299: return &latest_rnd_algorithm_id();
9300: }
9301:
9302: sub validCODE {
9303: my ($CODE)=@_;
9304: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
9305: return 0;
9306: }
9307:
9308: sub getCODE {
9309: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
9310: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
9311: defined($Apache::lonhomework::parsing_a_task) ) &&
9312: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
9313: return $Apache::lonhomework::history{'resource.CODE'};
9314: }
9315: return undef;
9316: }
9317:
9318: sub rndseed {
9319: my ($symb,$courseid,$domain,$username)=@_;
9320: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
9321: if (!defined($symb)) {
9322: unless ($symb=$wsymb) { return time; }
9323: }
9324: if (!$courseid) { $courseid=$wcourseid; }
9325: if (!$domain) { $domain=$wdomain; }
9326: if (!$username) { $username=$wusername }
9327: my $which=&get_rand_alg();
9328:
9329: if (defined(&getCODE())) {
9330: if ($which eq '64bit5') {
9331: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
9332: } elsif ($which eq '64bit4') {
9333: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
9334: } else {
9335: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
9336: }
9337: } elsif ($which eq '64bit5') {
9338: return &rndseed_64bit5($symb,$courseid,$domain,$username);
9339: } elsif ($which eq '64bit4') {
9340: return &rndseed_64bit4($symb,$courseid,$domain,$username);
9341: } elsif ($which eq '64bit3') {
9342: return &rndseed_64bit3($symb,$courseid,$domain,$username);
9343: } elsif ($which eq '64bit2') {
9344: return &rndseed_64bit2($symb,$courseid,$domain,$username);
9345: } elsif ($which eq '64bit') {
9346: return &rndseed_64bit($symb,$courseid,$domain,$username);
9347: }
9348: return &rndseed_32bit($symb,$courseid,$domain,$username);
9349: }
9350:
9351: sub rndseed_32bit {
9352: my ($symb,$courseid,$domain,$username)=@_;
9353: {
9354: use integer;
9355: my $symbchck=unpack("%32C*",$symb) << 27;
9356: my $symbseed=numval($symb) << 22;
9357: my $namechck=unpack("%32C*",$username) << 17;
9358: my $nameseed=numval($username) << 12;
9359: my $domainseed=unpack("%32C*",$domain) << 7;
9360: my $courseseed=unpack("%32C*",$courseid);
9361: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
9362: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9363: #&logthis("rndseed :$num:$symb");
9364: if ($_64bit) { $num=(($num<<32)>>32); }
9365: return $num;
9366: }
9367: }
9368:
9369: sub rndseed_64bit {
9370: my ($symb,$courseid,$domain,$username)=@_;
9371: {
9372: use integer;
9373: my $symbchck=unpack("%32S*",$symb) << 21;
9374: my $symbseed=numval($symb) << 10;
9375: my $namechck=unpack("%32S*",$username);
9376:
9377: my $nameseed=numval($username) << 21;
9378: my $domainseed=unpack("%32S*",$domain) << 10;
9379: my $courseseed=unpack("%32S*",$courseid);
9380:
9381: my $num1=$symbchck+$symbseed+$namechck;
9382: my $num2=$nameseed+$domainseed+$courseseed;
9383: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9384: #&logthis("rndseed :$num:$symb");
9385: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9386: return "$num1,$num2";
9387: }
9388: }
9389:
9390: sub rndseed_64bit2 {
9391: my ($symb,$courseid,$domain,$username)=@_;
9392: {
9393: use integer;
9394: # strings need to be an even # of cahracters long, it it is odd the
9395: # last characters gets thrown away
9396: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9397: my $symbseed=numval($symb) << 10;
9398: my $namechck=unpack("%32S*",$username.' ');
9399:
9400: my $nameseed=numval($username) << 21;
9401: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9402: my $courseseed=unpack("%32S*",$courseid.' ');
9403:
9404: my $num1=$symbchck+$symbseed+$namechck;
9405: my $num2=$nameseed+$domainseed+$courseseed;
9406: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9407: #&logthis("rndseed :$num:$symb");
9408: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9409: return "$num1,$num2";
9410: }
9411: }
9412:
9413: sub rndseed_64bit3 {
9414: my ($symb,$courseid,$domain,$username)=@_;
9415: {
9416: use integer;
9417: # strings need to be an even # of cahracters long, it it is odd the
9418: # last characters gets thrown away
9419: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9420: my $symbseed=numval2($symb) << 10;
9421: my $namechck=unpack("%32S*",$username.' ');
9422:
9423: my $nameseed=numval2($username) << 21;
9424: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9425: my $courseseed=unpack("%32S*",$courseid.' ');
9426:
9427: my $num1=$symbchck+$symbseed+$namechck;
9428: my $num2=$nameseed+$domainseed+$courseseed;
9429: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9430: #&logthis("rndseed :$num1:$num2:$_64bit");
9431: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9432:
9433: return "$num1:$num2";
9434: }
9435: }
9436:
9437: sub rndseed_64bit4 {
9438: my ($symb,$courseid,$domain,$username)=@_;
9439: {
9440: use integer;
9441: # strings need to be an even # of cahracters long, it it is odd the
9442: # last characters gets thrown away
9443: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9444: my $symbseed=numval3($symb) << 10;
9445: my $namechck=unpack("%32S*",$username.' ');
9446:
9447: my $nameseed=numval3($username) << 21;
9448: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9449: my $courseseed=unpack("%32S*",$courseid.' ');
9450:
9451: my $num1=$symbchck+$symbseed+$namechck;
9452: my $num2=$nameseed+$domainseed+$courseseed;
9453: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9454: #&logthis("rndseed :$num1:$num2:$_64bit");
9455: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9456:
9457: return "$num1:$num2";
9458: }
9459: }
9460:
9461: sub rndseed_64bit5 {
9462: my ($symb,$courseid,$domain,$username)=@_;
9463: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
9464: return "$num1:$num2";
9465: }
9466:
9467: sub rndseed_CODE_64bit {
9468: my ($symb,$courseid,$domain,$username)=@_;
9469: {
9470: use integer;
9471: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9472: my $symbseed=numval2($symb);
9473: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9474: my $CODEseed=numval(&getCODE());
9475: my $courseseed=unpack("%32S*",$courseid.' ');
9476: my $num1=$symbseed+$CODEchck;
9477: my $num2=$CODEseed+$courseseed+$symbchck;
9478: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9479: #&logthis("rndseed :$num1:$num2:$symb");
9480: if ($_64bit) { $num1=(($num1<<32)>>32); }
9481: if ($_64bit) { $num2=(($num2<<32)>>32); }
9482: return "$num1:$num2";
9483: }
9484: }
9485:
9486: sub rndseed_CODE_64bit4 {
9487: my ($symb,$courseid,$domain,$username)=@_;
9488: {
9489: use integer;
9490: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9491: my $symbseed=numval3($symb);
9492: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9493: my $CODEseed=numval3(&getCODE());
9494: my $courseseed=unpack("%32S*",$courseid.' ');
9495: my $num1=$symbseed+$CODEchck;
9496: my $num2=$CODEseed+$courseseed+$symbchck;
9497: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9498: #&logthis("rndseed :$num1:$num2:$symb");
9499: if ($_64bit) { $num1=(($num1<<32)>>32); }
9500: if ($_64bit) { $num2=(($num2<<32)>>32); }
9501: return "$num1:$num2";
9502: }
9503: }
9504:
9505: sub rndseed_CODE_64bit5 {
9506: my ($symb,$courseid,$domain,$username)=@_;
9507: my $code = &getCODE();
9508: my ($num1,$num2)=&digest("$symb,$courseid,$code");
9509: return "$num1:$num2";
9510: }
9511:
9512: sub setup_random_from_rndseed {
9513: my ($rndseed)=@_;
9514: if ($rndseed =~/([,:])/) {
9515: my ($num1,$num2)=split(/[,:]/,$rndseed);
9516: &Math::Random::random_set_seed(abs($num1),abs($num2));
9517: } else {
9518: &Math::Random::random_set_seed_from_phrase($rndseed);
9519: }
9520: }
9521:
9522: sub latest_receipt_algorithm_id {
9523: return 'receipt3';
9524: }
9525:
9526: sub recunique {
9527: my $fucourseid=shift;
9528: my $unique;
9529: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
9530: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9531: $unique=$env{"course.$fucourseid.internal.encseed"};
9532: } else {
9533: $unique=$perlvar{'lonReceipt'};
9534: }
9535: return unpack("%32C*",$unique);
9536: }
9537:
9538: sub recprefix {
9539: my $fucourseid=shift;
9540: my $prefix;
9541: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
9542: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9543: $prefix=$env{"course.$fucourseid.internal.encpref"};
9544: } else {
9545: $prefix=$perlvar{'lonHostID'};
9546: }
9547: return unpack("%32C*",$prefix);
9548: }
9549:
9550: sub ireceipt {
9551: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
9552:
9553: my $return =&recprefix($fucourseid).'-';
9554:
9555: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
9556: $env{'request.state'} eq 'construct') {
9557: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
9558: return $return;
9559: }
9560:
9561: my $cuname=unpack("%32C*",$funame);
9562: my $cudom=unpack("%32C*",$fudom);
9563: my $cucourseid=unpack("%32C*",$fucourseid);
9564: my $cusymb=unpack("%32C*",$fusymb);
9565: my $cunique=&recunique($fucourseid);
9566: my $cpart=unpack("%32S*",$part);
9567: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
9568:
9569: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
9570:
9571: $return.= ($cunique%$cuname+
9572: $cunique%$cudom+
9573: $cusymb%$cuname+
9574: $cusymb%$cudom+
9575: $cucourseid%$cuname+
9576: $cucourseid%$cudom+
9577: $cpart%$cuname+
9578: $cpart%$cudom);
9579: } else {
9580: $return.= ($cunique%$cuname+
9581: $cunique%$cudom+
9582: $cusymb%$cuname+
9583: $cusymb%$cudom+
9584: $cucourseid%$cuname+
9585: $cucourseid%$cudom);
9586: }
9587: return $return;
9588: }
9589:
9590: sub receipt {
9591: my ($part)=@_;
9592: my ($symb,$courseid,$domain,$name) = &whichuser();
9593: return &ireceipt($name,$domain,$courseid,$symb,$part);
9594: }
9595:
9596: sub whichuser {
9597: my ($passedsymb)=@_;
9598: my ($symb,$courseid,$domain,$name,$publicuser);
9599: if (defined($env{'form.grade_symb'})) {
9600: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
9601: my $allowed=&allowed('vgr',$tmp_courseid);
9602: if (!$allowed &&
9603: exists($env{'request.course.sec'}) &&
9604: $env{'request.course.sec'} !~ /^\s*$/) {
9605: $allowed=&allowed('vgr',$tmp_courseid.
9606: '/'.$env{'request.course.sec'});
9607: }
9608: if ($allowed) {
9609: ($symb)=&get_env_multiple('form.grade_symb');
9610: $courseid=$tmp_courseid;
9611: ($domain)=&get_env_multiple('form.grade_domain');
9612: ($name)=&get_env_multiple('form.grade_username');
9613: return ($symb,$courseid,$domain,$name,$publicuser);
9614: }
9615: }
9616: if (!$passedsymb) {
9617: $symb=&symbread();
9618: } else {
9619: $symb=$passedsymb;
9620: }
9621: $courseid=$env{'request.course.id'};
9622: $domain=$env{'user.domain'};
9623: $name=$env{'user.name'};
9624: if ($name eq 'public' && $domain eq 'public') {
9625: if (!defined($env{'form.username'})) {
9626: $env{'form.username'}.=time.rand(10000000);
9627: }
9628: $name.=$env{'form.username'};
9629: }
9630: return ($symb,$courseid,$domain,$name,$publicuser);
9631:
9632: }
9633:
9634: # ------------------------------------------------------------ Serves up a file
9635: # returns either the contents of the file or
9636: # -1 if the file doesn't exist
9637: #
9638: # if the target is a file that was uploaded via DOCS,
9639: # a check will be made to see if a current copy exists on the local server,
9640: # if it does this will be served, otherwise a copy will be retrieved from
9641: # the home server for the course and stored in /home/httpd/html/userfiles on
9642: # the local server.
9643:
9644: sub getfile {
9645: my ($file) = @_;
9646: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9647: &repcopy($file);
9648: return &readfile($file);
9649: }
9650:
9651: sub repcopy_userfile {
9652: my ($file)=@_;
9653: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9654: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
9655: my ($cdom,$cnum,$filename) =
9656: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
9657: my $uri="/uploaded/$cdom/$cnum/$filename";
9658: if (-e "$file") {
9659: # we already have a local copy, check it out
9660: my @fileinfo = stat($file);
9661: my $rtncode;
9662: my $info;
9663: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
9664: if ($lwpresp ne 'ok') {
9665: # there is no such file anymore, even though we had a local copy
9666: if ($rtncode eq '404') {
9667: unlink($file);
9668: }
9669: return -1;
9670: }
9671: if ($info < $fileinfo[9]) {
9672: # nice, the file we have is up-to-date, just say okay
9673: return 'ok';
9674: } else {
9675: # the file is outdated, get rid of it
9676: unlink($file);
9677: }
9678: }
9679: # one way or the other, at this point, we don't have the file
9680: # construct the correct path for the file
9681: my @parts = ($cdom,$cnum);
9682: if ($filename =~ m|^(.+)/[^/]+$|) {
9683: push @parts, split(/\//,$1);
9684: }
9685: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9686: foreach my $part (@parts) {
9687: $path .= '/'.$part;
9688: if (!-e $path) {
9689: mkdir($path,0770);
9690: }
9691: }
9692: # now the path exists for sure
9693: # get a user agent
9694: my $ua=new LWP::UserAgent;
9695: my $transferfile=$file.'.in.transfer';
9696: # FIXME: this should flock
9697: if (-e $transferfile) { return 'ok'; }
9698: my $request;
9699: $uri=~s/^\///;
9700: my $homeserver = &homeserver($cnum,$cdom);
9701: my $protocol = $protocol{$homeserver};
9702: $protocol = 'http' if ($protocol ne 'https');
9703: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9704: my $response=$ua->request($request,$transferfile);
9705: # did it work?
9706: if ($response->is_error()) {
9707: unlink($transferfile);
9708: &logthis("Userfile repcopy failed for $uri");
9709: return -1;
9710: }
9711: # worked, rename the transfer file
9712: rename($transferfile,$file);
9713: return 'ok';
9714: }
9715:
9716: sub tokenwrapper {
9717: my $uri=shift;
9718: $uri=~s|^https?\://([^/]+)||;
9719: $uri=~s|^/||;
9720: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9721: my $token=$1;
9722: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9723: if ($udom && $uname && $file) {
9724: $file=~s|(\?\.*)*$||;
9725: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9726: my $homeserver = &homeserver($uname,$udom);
9727: my $protocol = $protocol{$homeserver};
9728: $protocol = 'http' if ($protocol ne 'https');
9729: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9730: (($uri=~/\?/)?'&':'?').'token='.$token.
9731: '&tokenissued='.$perlvar{'lonHostID'};
9732: } else {
9733: return '/adm/notfound.html';
9734: }
9735: }
9736:
9737: # call with reqtype HEAD: get last modification time
9738: # call with reqtype GET: get the file contents
9739: # Do not call this with reqtype GET for large files! It loads everything into memory
9740: #
9741: sub getuploaded {
9742: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9743: $uri=~s/^\///;
9744: my $homeserver = &homeserver($cnum,$cdom);
9745: my $protocol = $protocol{$homeserver};
9746: $protocol = 'http' if ($protocol ne 'https');
9747: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9748: my $ua=new LWP::UserAgent;
9749: my $request=new HTTP::Request($reqtype,$uri);
9750: my $response=$ua->request($request);
9751: $$rtncode = $response->code;
9752: if (! $response->is_success()) {
9753: return 'failed';
9754: }
9755: if ($reqtype eq 'HEAD') {
9756: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9757: } elsif ($reqtype eq 'GET') {
9758: $$info = $response->content;
9759: }
9760: return 'ok';
9761: }
9762:
9763: sub readfile {
9764: my $file = shift;
9765: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9766: my $fh;
9767: open($fh,"<$file");
9768: my $a='';
9769: while (my $line = <$fh>) { $a .= $line; }
9770: return $a;
9771: }
9772:
9773: sub filelocation {
9774: my ($dir,$file) = @_;
9775: my $location;
9776: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9777:
9778: if ($file =~ m-^/adm/-) {
9779: $file=~s-^/adm/wrapper/-/-;
9780: $file=~s-^/adm/coursedocs/showdoc/-/-;
9781: }
9782:
9783: if ($file=~m:^/~:) { # is a contruction space reference
9784: $location = $file;
9785: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9786: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9787: # is a correct contruction space reference
9788: $location = $file;
9789: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9790: $location = $file;
9791: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9792: my ($udom,$uname,$filename)=
9793: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9794: my $home=&homeserver($uname,$udom);
9795: my $is_me=0;
9796: my @ids=¤t_machine_ids();
9797: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9798: if ($is_me) {
9799: $location=propath($udom,$uname).'/userfiles/'.$filename;
9800: } else {
9801: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9802: $udom.'/'.$uname.'/'.$filename;
9803: }
9804: } elsif ($file =~ m-^/adm/-) {
9805: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9806: } else {
9807: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9808: $file=~s:^/res/:/:;
9809: if ( !( $file =~ m:^/:) ) {
9810: $location = $dir. '/'.$file;
9811: } else {
9812: $location = '/home/httpd/html/res'.$file;
9813: }
9814: }
9815: $location=~s://+:/:g; # remove duplicate /
9816: while ($location=~m{/\.\./}) {
9817: if ($location =~ m{/[^/]+/\.\./}) {
9818: $location=~ s{/[^/]+/\.\./}{/}g;
9819: } else {
9820: $location=~ s{/\.\./}{/}g;
9821: }
9822: } #remove dir/..
9823: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9824: return $location;
9825: }
9826:
9827: sub hreflocation {
9828: my ($dir,$file)=@_;
9829: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9830: $file=filelocation($dir,$file);
9831: } elsif ($file=~m-^/adm/-) {
9832: $file=~s-^/adm/wrapper/-/-;
9833: $file=~s-^/adm/coursedocs/showdoc/-/-;
9834: }
9835: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9836: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9837: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9838: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9839: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9840: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9841: -/uploaded/$1/$2/-x;
9842: }
9843: if ($file=~ m{^/userfiles/}) {
9844: $file =~ s{^/userfiles/}{/uploaded/};
9845: }
9846: return $file;
9847: }
9848:
9849: sub current_machine_domains {
9850: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9851: }
9852:
9853: sub machine_domains {
9854: my ($hostname) = @_;
9855: my @domains;
9856: my %hostname = &all_hostnames();
9857: while( my($id, $name) = each(%hostname)) {
9858: # &logthis("-$id-$name-$hostname-");
9859: if ($hostname eq $name) {
9860: push(@domains,&host_domain($id));
9861: }
9862: }
9863: return @domains;
9864: }
9865:
9866: sub current_machine_ids {
9867: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9868: }
9869:
9870: sub machine_ids {
9871: my ($hostname) = @_;
9872: $hostname ||= &hostname($perlvar{'lonHostID'});
9873: my @ids;
9874: my %name_to_host = &all_names();
9875: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9876: return @{ $name_to_host{$hostname} };
9877: }
9878: return;
9879: }
9880:
9881: sub additional_machine_domains {
9882: my @domains;
9883: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9884: while( my $line = <$fh>) {
9885: $line =~ s/\s//g;
9886: push(@domains,$line);
9887: }
9888: return @domains;
9889: }
9890:
9891: sub default_login_domain {
9892: my $domain = $perlvar{'lonDefDomain'};
9893: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9894: foreach my $posdom (¤t_machine_domains(),
9895: &additional_machine_domains()) {
9896: if (lc($posdom) eq lc($testdomain)) {
9897: $domain=$posdom;
9898: last;
9899: }
9900: }
9901: return $domain;
9902: }
9903:
9904: # ------------------------------------------------------------- Declutters URLs
9905:
9906: sub declutter {
9907: my $thisfn=shift;
9908: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9909: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9910: $thisfn=~s/^\///;
9911: $thisfn=~s|^adm/wrapper/||;
9912: $thisfn=~s|^adm/coursedocs/showdoc/||;
9913: $thisfn=~s/^res\///;
9914: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
9915: $thisfn=~s/\?.+$//;
9916: }
9917: return $thisfn;
9918: }
9919:
9920: # ------------------------------------------------------------- Clutter up URLs
9921:
9922: sub clutter {
9923: my $thisfn='/'.&declutter(shift);
9924: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9925: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9926: $thisfn='/res'.$thisfn;
9927: }
9928: if ($thisfn !~m|^/adm|) {
9929: if ($thisfn =~ m|^/ext/|) {
9930: $thisfn='/adm/wrapper'.$thisfn;
9931: } else {
9932: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9933: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9934: if ($embstyle eq 'ssi'
9935: || ($embstyle eq 'hdn')
9936: || ($embstyle eq 'rat')
9937: || ($embstyle eq 'prv')
9938: || ($embstyle eq 'ign')) {
9939: #do nothing with these
9940: } elsif (($embstyle eq 'img')
9941: || ($embstyle eq 'emb')
9942: || ($embstyle eq 'wrp')) {
9943: $thisfn='/adm/wrapper'.$thisfn;
9944: } elsif ($embstyle eq 'unk'
9945: && $thisfn!~/\.(sequence|page)$/) {
9946: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9947: } else {
9948: # &logthis("Got a blank emb style");
9949: }
9950: }
9951: }
9952: return $thisfn;
9953: }
9954:
9955: sub clutter_with_no_wrapper {
9956: my $uri = &clutter(shift);
9957: if ($uri =~ m-^/adm/-) {
9958: $uri =~ s-^/adm/wrapper/-/-;
9959: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9960: }
9961: return $uri;
9962: }
9963:
9964: sub freeze_escape {
9965: my ($value)=@_;
9966: if (ref($value)) {
9967: $value=&nfreeze($value);
9968: return '__FROZEN__'.&escape($value);
9969: }
9970: return &escape($value);
9971: }
9972:
9973:
9974: sub thaw_unescape {
9975: my ($value)=@_;
9976: if ($value =~ /^__FROZEN__/) {
9977: substr($value,0,10,undef);
9978: $value=&unescape($value);
9979: return &thaw($value);
9980: }
9981: return &unescape($value);
9982: }
9983:
9984: sub correct_line_ends {
9985: my ($result)=@_;
9986: $$result =~s/\r\n/\n/mg;
9987: $$result =~s/\r/\n/mg;
9988: }
9989: # ================================================================ Main Program
9990:
9991: sub goodbye {
9992: &logthis("Starting Shut down");
9993: #not converted to using infrastruture and probably shouldn't be
9994: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9995: #converted
9996: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9997: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9998: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9999: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
10000: #1.1 only
10001: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
10002: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
10003: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
10004: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
10005: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
10006: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
10007: &logthis(sprintf("%-20s is %s",'hits',$hits));
10008: &flushcourselogs();
10009: &logthis("Shutting down");
10010: }
10011:
10012: sub get_dns {
10013: my ($url,$func,$ignore_cache) = @_;
10014: if (!$ignore_cache) {
10015: my ($content,$cached)=
10016: &Apache::lonnet::is_cached_new('dns',$url);
10017: if ($cached) {
10018: &$func($content);
10019: return;
10020: }
10021: }
10022:
10023: my %alldns;
10024: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10025: foreach my $dns (<$config>) {
10026: next if ($dns !~ /^\^(\S*)/x);
10027: my $line = $1;
10028: my ($host,$protocol) = split(/:/,$line);
10029: if ($protocol ne 'https') {
10030: $protocol = 'http';
10031: }
10032: $alldns{$host} = $protocol;
10033: }
10034: while (%alldns) {
10035: my ($dns) = keys(%alldns);
10036: my $ua=new LWP::UserAgent;
10037: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10038: my $response=$ua->request($request);
10039: delete($alldns{$dns});
10040: next if ($response->is_error());
10041: my @content = split("\n",$response->content);
10042: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10043: &$func(\@content);
10044: return;
10045: }
10046: close($config);
10047: my $which = (split('/',$url))[3];
10048: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10049: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10050: my @content = <$config>;
10051: &$func(\@content);
10052: return;
10053: }
10054: # ------------------------------------------------------------ Read domain file
10055: {
10056: my $loaded;
10057: my %domain;
10058:
10059: sub parse_domain_tab {
10060: my ($lines) = @_;
10061: foreach my $line (@$lines) {
10062: next if ($line =~ /^(\#|\s*$ )/x);
10063:
10064: chomp($line);
10065: my ($name,@elements) = split(/:/,$line,9);
10066: my %this_domain;
10067: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10068: 'lang_def', 'city', 'longi', 'lati',
10069: 'primary') {
10070: $this_domain{$field} = shift(@elements);
10071: }
10072: $domain{$name} = \%this_domain;
10073: }
10074: }
10075:
10076: sub reset_domain_info {
10077: undef($loaded);
10078: undef(%domain);
10079: }
10080:
10081: sub load_domain_tab {
10082: my ($ignore_cache) = @_;
10083: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10084: my $fh;
10085: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10086: my @lines = <$fh>;
10087: &parse_domain_tab(\@lines);
10088: }
10089: close($fh);
10090: $loaded = 1;
10091: }
10092:
10093: sub domain {
10094: &load_domain_tab() if (!$loaded);
10095:
10096: my ($name,$what) = @_;
10097: return if ( !exists($domain{$name}) );
10098:
10099: if (!$what) {
10100: return $domain{$name}{'description'};
10101: }
10102: return $domain{$name}{$what};
10103: }
10104:
10105: sub domain_info {
10106: &load_domain_tab() if (!$loaded);
10107: return %domain;
10108: }
10109:
10110: }
10111:
10112:
10113: # ------------------------------------------------------------- Read hosts file
10114: {
10115: my %hostname;
10116: my %hostdom;
10117: my %libserv;
10118: my $loaded;
10119: my %name_to_host;
10120: my %internetdom;
10121: my %LC_dns_serv;
10122:
10123: sub parse_hosts_tab {
10124: my ($file) = @_;
10125: foreach my $configline (@$file) {
10126: next if ($configline =~ /^(\#|\s*$ )/x);
10127: chomp($configline);
10128: if ($configline =~ /^\^/) {
10129: if ($configline =~ /^\^([\w.\-]+)/) {
10130: $LC_dns_serv{$1} = 1;
10131: }
10132: next;
10133: }
10134: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10135: $name=~s/\s//g;
10136: if ($id && $domain && $role && $name) {
10137: $hostname{$id}=$name;
10138: push(@{$name_to_host{$name}}, $id);
10139: $hostdom{$id}=$domain;
10140: if ($role eq 'library') { $libserv{$id}=$name; }
10141: if (defined($protocol)) {
10142: if ($protocol eq 'https') {
10143: $protocol{$id} = $protocol;
10144: } else {
10145: $protocol{$id} = 'http';
10146: }
10147: } else {
10148: $protocol{$id} = 'http';
10149: }
10150: if (defined($intdom)) {
10151: $internetdom{$id} = $intdom;
10152: }
10153: }
10154: }
10155: }
10156:
10157: sub reset_hosts_info {
10158: &purge_remembered();
10159: &reset_domain_info();
10160: &reset_hosts_ip_info();
10161: undef(%name_to_host);
10162: undef(%hostname);
10163: undef(%hostdom);
10164: undef(%libserv);
10165: undef($loaded);
10166: }
10167:
10168: sub load_hosts_tab {
10169: my ($ignore_cache) = @_;
10170: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
10171: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10172: my @config = <$config>;
10173: &parse_hosts_tab(\@config);
10174: close($config);
10175: $loaded=1;
10176: }
10177:
10178: sub hostname {
10179: &load_hosts_tab() if (!$loaded);
10180:
10181: my ($lonid) = @_;
10182: return $hostname{$lonid};
10183: }
10184:
10185: sub all_hostnames {
10186: &load_hosts_tab() if (!$loaded);
10187:
10188: return %hostname;
10189: }
10190:
10191: sub all_names {
10192: &load_hosts_tab() if (!$loaded);
10193:
10194: return %name_to_host;
10195: }
10196:
10197: sub all_host_domain {
10198: &load_hosts_tab() if (!$loaded);
10199: return %hostdom;
10200: }
10201:
10202: sub is_library {
10203: &load_hosts_tab() if (!$loaded);
10204:
10205: return exists($libserv{$_[0]});
10206: }
10207:
10208: sub all_library {
10209: &load_hosts_tab() if (!$loaded);
10210:
10211: return %libserv;
10212: }
10213:
10214: sub unique_library {
10215: #2x reverse removes all hostnames that appear more than once
10216: my %unique = reverse &all_library();
10217: return reverse %unique;
10218: }
10219:
10220: sub get_servers {
10221: &load_hosts_tab() if (!$loaded);
10222:
10223: my ($domain,$type) = @_;
10224: my %possible_hosts = ($type eq 'library') ? %libserv
10225: : %hostname;
10226: my %result;
10227: if (ref($domain) eq 'ARRAY') {
10228: while ( my ($host,$hostname) = each(%possible_hosts)) {
10229: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
10230: $result{$host} = $hostname;
10231: }
10232: }
10233: } else {
10234: while ( my ($host,$hostname) = each(%possible_hosts)) {
10235: if ($hostdom{$host} eq $domain) {
10236: $result{$host} = $hostname;
10237: }
10238: }
10239: }
10240: return %result;
10241: }
10242:
10243: sub get_unique_servers {
10244: my %unique = reverse &get_servers(@_);
10245: return reverse %unique;
10246: }
10247:
10248: sub host_domain {
10249: &load_hosts_tab() if (!$loaded);
10250:
10251: my ($lonid) = @_;
10252: return $hostdom{$lonid};
10253: }
10254:
10255: sub all_domains {
10256: &load_hosts_tab() if (!$loaded);
10257:
10258: my %seen;
10259: my @uniq = grep(!$seen{$_}++, values(%hostdom));
10260: return @uniq;
10261: }
10262:
10263: sub internet_dom {
10264: &load_hosts_tab() if (!$loaded);
10265:
10266: my ($lonid) = @_;
10267: return $internetdom{$lonid};
10268: }
10269:
10270: sub is_LC_dns {
10271: &load_hosts_tab() if (!$loaded);
10272:
10273: my ($hostname) = @_;
10274: return exists($LC_dns_serv{$hostname});
10275: }
10276:
10277: }
10278:
10279: {
10280: my %iphost;
10281: my %name_to_ip;
10282: my %lonid_to_ip;
10283:
10284: sub get_hosts_from_ip {
10285: my ($ip) = @_;
10286: my %iphosts = &get_iphost();
10287: if (ref($iphosts{$ip})) {
10288: return @{$iphosts{$ip}};
10289: }
10290: return;
10291: }
10292:
10293: sub reset_hosts_ip_info {
10294: undef(%iphost);
10295: undef(%name_to_ip);
10296: undef(%lonid_to_ip);
10297: }
10298:
10299: sub get_host_ip {
10300: my ($lonid) = @_;
10301: if (exists($lonid_to_ip{$lonid})) {
10302: return $lonid_to_ip{$lonid};
10303: }
10304: my $name=&hostname($lonid);
10305: my $ip = gethostbyname($name);
10306: return if (!$ip || length($ip) ne 4);
10307: $ip=inet_ntoa($ip);
10308: $name_to_ip{$name} = $ip;
10309: $lonid_to_ip{$lonid} = $ip;
10310: return $ip;
10311: }
10312:
10313: sub get_iphost {
10314: my ($ignore_cache) = @_;
10315:
10316: if (!$ignore_cache) {
10317: if (%iphost) {
10318: return %iphost;
10319: }
10320: my ($ip_info,$cached)=
10321: &Apache::lonnet::is_cached_new('iphost','iphost');
10322: if ($cached) {
10323: %iphost = %{$ip_info->[0]};
10324: %name_to_ip = %{$ip_info->[1]};
10325: %lonid_to_ip = %{$ip_info->[2]};
10326: return %iphost;
10327: }
10328: }
10329:
10330: # get yesterday's info for fallback
10331: my %old_name_to_ip;
10332: my ($ip_info,$cached)=
10333: &Apache::lonnet::is_cached_new('iphost','iphost');
10334: if ($cached) {
10335: %old_name_to_ip = %{$ip_info->[1]};
10336: }
10337:
10338: my %name_to_host = &all_names();
10339: foreach my $name (keys(%name_to_host)) {
10340: my $ip;
10341: if (!exists($name_to_ip{$name})) {
10342: $ip = gethostbyname($name);
10343: if (!$ip || length($ip) ne 4) {
10344: if (defined($old_name_to_ip{$name})) {
10345: $ip = $old_name_to_ip{$name};
10346: &logthis("Can't find $name defaulting to old $ip");
10347: } else {
10348: &logthis("Name $name no IP found");
10349: next;
10350: }
10351: } else {
10352: $ip=inet_ntoa($ip);
10353: }
10354: $name_to_ip{$name} = $ip;
10355: } else {
10356: $ip = $name_to_ip{$name};
10357: }
10358: foreach my $id (@{ $name_to_host{$name} }) {
10359: $lonid_to_ip{$id} = $ip;
10360: }
10361: push(@{$iphost{$ip}},@{$name_to_host{$name}});
10362: }
10363: &Apache::lonnet::do_cache_new('iphost','iphost',
10364: [\%iphost,\%name_to_ip,\%lonid_to_ip],
10365: 48*60*60);
10366:
10367: return %iphost;
10368: }
10369:
10370: #
10371: # Given a DNS returns the loncapa host name for that DNS
10372: #
10373: sub host_from_dns {
10374: my ($dns) = @_;
10375: my @hosts;
10376: my $ip;
10377:
10378: if (exists($name_to_ip{$dns})) {
10379: $ip = $name_to_ip{$dns};
10380: }
10381: if (!$ip) {
10382: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
10383: if (length($ip) == 4) {
10384: $ip = &IO::Socket::inet_ntoa($ip);
10385: }
10386: }
10387: if ($ip) {
10388: @hosts = get_hosts_from_ip($ip);
10389: return $hosts[0];
10390: }
10391: return undef;
10392: }
10393:
10394: sub get_internet_names {
10395: my ($lonid) = @_;
10396: return if ($lonid eq '');
10397: my ($idnref,$cached)=
10398: &Apache::lonnet::is_cached_new('internetnames',$lonid);
10399: if ($cached) {
10400: return $idnref;
10401: }
10402: my $ip = &get_host_ip($lonid);
10403: my @hosts = &get_hosts_from_ip($ip);
10404: my %iphost = &get_iphost();
10405: my (@idns,%seen);
10406: foreach my $id (@hosts) {
10407: my $dom = &host_domain($id);
10408: my $prim_id = &domain($dom,'primary');
10409: my $prim_ip = &get_host_ip($prim_id);
10410: next if ($seen{$prim_ip});
10411: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
10412: foreach my $id (@{$iphost{$prim_ip}}) {
10413: my $intdom = &internet_dom($id);
10414: unless (grep(/^\Q$intdom\E$/,@idns)) {
10415: push(@idns,$intdom);
10416: }
10417: }
10418: }
10419: $seen{$prim_ip} = 1;
10420: }
10421: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
10422: }
10423:
10424: }
10425:
10426: sub all_loncaparevs {
10427: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
10428: }
10429:
10430: BEGIN {
10431:
10432: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
10433: unless ($readit) {
10434: {
10435: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
10436: %perlvar = (%perlvar,%{$configvars});
10437: }
10438:
10439:
10440: # ------------------------------------------------------ Read spare server file
10441: {
10442: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
10443:
10444: while (my $configline=<$config>) {
10445: chomp($configline);
10446: if ($configline) {
10447: my ($host,$type) = split(':',$configline,2);
10448: if (!defined($type) || $type eq '') { $type = 'default' };
10449: push(@{ $spareid{$type} }, $host);
10450: }
10451: }
10452: close($config);
10453: }
10454: # ------------------------------------------------------------ Read permissions
10455: {
10456: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
10457:
10458: while (my $configline=<$config>) {
10459: chomp($configline);
10460: if ($configline) {
10461: my ($role,$perm)=split(/ /,$configline);
10462: if ($perm ne '') { $pr{$role}=$perm; }
10463: }
10464: }
10465: close($config);
10466: }
10467:
10468: # -------------------------------------------- Read plain texts for permissions
10469: {
10470: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
10471:
10472: while (my $configline=<$config>) {
10473: chomp($configline);
10474: if ($configline) {
10475: my ($short,@plain)=split(/:/,$configline);
10476: %{$prp{$short}} = ();
10477: if (@plain > 0) {
10478: $prp{$short}{'std'} = $plain[0];
10479: for (my $i=1; $i<@plain; $i++) {
10480: $prp{$short}{'alt'.$i} = $plain[$i];
10481: }
10482: }
10483: }
10484: }
10485: close($config);
10486: }
10487:
10488: # ---------------------------------------------------------- Read package table
10489: {
10490: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
10491:
10492: while (my $configline=<$config>) {
10493: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
10494: chomp($configline);
10495: my ($short,$plain)=split(/:/,$configline);
10496: my ($pack,$name)=split(/\&/,$short);
10497: if ($plain ne '') {
10498: $packagetab{$pack.'&'.$name.'&name'}=$name;
10499: $packagetab{$short}=$plain;
10500: }
10501: }
10502: close($config);
10503: }
10504:
10505: # ---------------------------------------------------------- Read loncaparev table
10506: {
10507: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
10508: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
10509: while (my $configline=<$config>) {
10510: chomp($configline);
10511: my ($hostid,$loncaparev)=split(/:/,$configline);
10512: $loncaparevs{$hostid}=$loncaparev;
10513: }
10514: close($config);
10515: }
10516: }
10517: }
10518:
10519: # ---------------------------------------------------------- Read serverhostID table
10520: {
10521: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
10522: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
10523: while (my $configline=<$config>) {
10524: chomp($configline);
10525: my ($name,$id)=split(/:/,$configline);
10526: $serverhomeIDs{$name}=$id;
10527: }
10528: close($config);
10529: }
10530: }
10531: }
10532:
10533: {
10534: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
10535: if (-e $file) {
10536: my $parser = HTML::LCParser->new($file);
10537: while (my $token = $parser->get_token()) {
10538: if ($token->[0] eq 'S') {
10539: my $item = $token->[1];
10540: my $name = $token->[2]{'name'};
10541: my $value = $token->[2]{'value'};
10542: if ($item ne '' && $name ne '' && $value ne '') {
10543: my $release = $parser->get_text();
10544: $release =~ s/(^\s*|\s*$ )//gx;
10545: $needsrelease{$item.':'.$name.':'.$value} = $release;
10546: }
10547: }
10548: }
10549: }
10550: }
10551:
10552: # ------------- set up temporary directory
10553: {
10554: $tmpdir = LONCAPA::tempdir();
10555:
10556: }
10557:
10558: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
10559: 'compress_threshold'=> 20_000,
10560: });
10561:
10562: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
10563: $dumpcount=0;
10564: $locknum=0;
10565:
10566: &logtouch();
10567: &logthis('<font color="yellow">INFO: Read configuration</font>');
10568: $readit=1;
10569: {
10570: use integer;
10571: my $test=(2**32)+1;
10572: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
10573: &logthis(" Detected 64bit platform ($_64bit)");
10574: }
10575: }
10576: }
10577:
10578: 1;
10579: __END__
10580:
10581: =pod
10582:
10583: =head1 NAME
10584:
10585: Apache::lonnet - Subroutines to ask questions about things in the network.
10586:
10587: =head1 SYNOPSIS
10588:
10589: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
10590:
10591: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
10592:
10593: Common parameters:
10594:
10595: =over 4
10596:
10597: =item *
10598:
10599: $uname : an internal username (if $cname expecting a course Id specifically)
10600:
10601: =item *
10602:
10603: $udom : a domain (if $cdom expecting a course's domain specifically)
10604:
10605: =item *
10606:
10607: $symb : a resource instance identifier
10608:
10609: =item *
10610:
10611: $namespace : the name of a .db file that contains the data needed or
10612: being set.
10613:
10614: =back
10615:
10616: =head1 OVERVIEW
10617:
10618: lonnet provides subroutines which interact with the
10619: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
10620: about classes, users, and resources.
10621:
10622: For many of these objects you can also use this to store data about
10623: them or modify them in various ways.
10624:
10625: =head2 Symbs
10626:
10627: To identify a specific instance of a resource, LON-CAPA uses symbols
10628: or "symbs"X<symb>. These identifiers are built from the URL of the
10629: map, the resource number of the resource in the map, and the URL of
10630: the resource itself. The latter is somewhat redundant, but might help
10631: if maps change.
10632:
10633: An example is
10634:
10635: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
10636:
10637: The respective map entry is
10638:
10639: <resource id="19" src="/res/msu/korte/tests/part12.problem"
10640: title="Problem 2">
10641: </resource>
10642:
10643: Symbs are used by the random number generator, as well as to store and
10644: restore data specific to a certain instance of for example a problem.
10645:
10646: =head2 Storing And Retrieving Data
10647:
10648: X<store()>X<cstore()>X<restore()>Three of the most important functions
10649: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
10650: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
10651: is is the non-critical message twin of cstore. These functions are for
10652: handlers to store a perl hash to a user's permanent data space in an
10653: easy manner, and to retrieve it again on another call. It is expected
10654: that a handler would use this once at the beginning to retrieve data,
10655: and then again once at the end to send only the new data back.
10656:
10657: The data is stored in the user's data directory on the user's
10658: homeserver under the ID of the course.
10659:
10660: The hash that is returned by restore will have all of the previous
10661: value for all of the elements of the hash.
10662:
10663: Example:
10664:
10665: #creating a hash
10666: my %hash;
10667: $hash{'foo'}='bar';
10668:
10669: #storing it
10670: &Apache::lonnet::cstore(\%hash);
10671:
10672: #changing a value
10673: $hash{'foo'}='notbar';
10674:
10675: #adding a new value
10676: $hash{'bar'}='foo';
10677: &Apache::lonnet::cstore(\%hash);
10678:
10679: #retrieving the hash
10680: my %history=&Apache::lonnet::restore();
10681:
10682: #print the hash
10683: foreach my $key (sort(keys(%history))) {
10684: print("\%history{$key} = $history{$key}");
10685: }
10686:
10687: Will print out:
10688:
10689: %history{1:foo} = bar
10690: %history{1:keys} = foo:timestamp
10691: %history{1:timestamp} = 990455579
10692: %history{2:bar} = foo
10693: %history{2:foo} = notbar
10694: %history{2:keys} = foo:bar:timestamp
10695: %history{2:timestamp} = 990455580
10696: %history{bar} = foo
10697: %history{foo} = notbar
10698: %history{timestamp} = 990455580
10699: %history{version} = 2
10700:
10701: Note that the special hash entries C<keys>, C<version> and
10702: C<timestamp> were added to the hash. C<version> will be equal to the
10703: total number of versions of the data that have been stored. The
10704: C<timestamp> attribute will be the UNIX time the hash was
10705: stored. C<keys> is available in every historical section to list which
10706: keys were added or changed at a specific historical revision of a
10707: hash.
10708:
10709: B<Warning>: do not store the hash that restore returns directly. This
10710: will cause a mess since it will restore the historical keys as if the
10711: were new keys. I.E. 1:foo will become 1:1:foo etc.
10712:
10713: Calling convention:
10714:
10715: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
10716: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
10717:
10718: For more detailed information, see lonnet specific documentation.
10719:
10720: =head1 RETURN MESSAGES
10721:
10722: =over 4
10723:
10724: =item * B<con_lost>: unable to contact remote host
10725:
10726: =item * B<con_delayed>: unable to contact remote host, message will be delivered
10727: when the connection is brought back up
10728:
10729: =item * B<con_failed>: unable to contact remote host and unable to save message
10730: for later delivery
10731:
10732: =item * B<error:>: an error a occurred, a description of the error follows the :
10733:
10734: =item * B<no_such_host>: unable to fund a host associated with the user/domain
10735: that was requested
10736:
10737: =back
10738:
10739: =head1 PUBLIC SUBROUTINES
10740:
10741: =head2 Session Environment Functions
10742:
10743: =over 4
10744:
10745: =item *
10746: X<appenv()>
10747: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
10748: the user envirnoment file, and will be restored for each access this
10749: user makes during this session, also modifies the %env for the current
10750: process. Optional rolesarrayref - if defined contains a reference to an array
10751: of roles which are exempt from the restriction on modifying user.role entries
10752: in the user's environment.db and in %env.
10753:
10754: =item *
10755: X<delenv()>
10756: B<delenv($delthis,$regexp)>: removes all items from the session
10757: environment file that begin with $delthis. If the
10758: optional second arg - $regexp - is true, $delthis is treated as a
10759: regular expression, otherwise \Q$delthis\E is used.
10760: The values are also deleted from the current processes %env.
10761:
10762: =item * get_env_multiple($name)
10763:
10764: gets $name from the %env hash, it seemlessly handles the cases where multiple
10765: values may be defined and end up as an array ref.
10766:
10767: returns an array of values
10768:
10769: =back
10770:
10771: =head2 User Information
10772:
10773: =over 4
10774:
10775: =item *
10776: X<queryauthenticate()>
10777: B<queryauthenticate($uname,$udom)>: try to determine user's current
10778: authentication scheme
10779:
10780: =item *
10781: X<authenticate()>
10782: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
10783: authenticate user from domain's lib servers (first use the current
10784: one). C<$upass> should be the users password.
10785: $checkdefauth is optional (value is 1 if a check should be made to
10786: authenticate user using default authentication method, and allow
10787: account creation if username does not have account in the domain).
10788: $clientcancheckhost is optional (value is 1 if checking whether the
10789: server can host will occur on the client side in lonauth.pm).
10790:
10791: =item *
10792: X<homeserver()>
10793: B<homeserver($uname,$udom)>: find the server which has
10794: the user's directory and files (there must be only one), this caches
10795: the answer, and also caches if there is a borken connection.
10796:
10797: =item *
10798: X<idget()>
10799: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10800: (IDs are a unique resource in a domain, there must be only 1 ID per
10801: username, and only 1 username per ID in a specific domain) (returns
10802: hash: id=>name,id=>name)
10803:
10804: =item *
10805: X<idrget()>
10806: B<idrget($udom,@unames)>: find the IDs behind a list of
10807: usernames (returns hash: name=>id,name=>id)
10808:
10809: =item *
10810: X<idput()>
10811: B<idput($udom,%ids)>: store away a list of names and associated IDs
10812:
10813: =item *
10814: X<rolesinit()>
10815: B<rolesinit($udom,$username,$authhost)>: get user privileges
10816:
10817: =item *
10818: X<getsection()>
10819: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10820: course $cname, return section name/number or '' for "not in course"
10821: and '-1' for "no section"
10822:
10823: =item *
10824: X<userenvironment()>
10825: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10826: passed in @what from the requested user's environment, returns a hash
10827:
10828: =item *
10829: X<userlog_query()>
10830: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10831: activity.log file. %filters defines filters applied when parsing the
10832: log file. These can be start or end timestamps, or the type of action
10833: - log to look for Login or Logout events, check for Checkin or
10834: Checkout, role for role selection. The response is in the form
10835: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10836: escaped strings of the action recorded in the activity.log file.
10837:
10838: =back
10839:
10840: =head2 User Roles
10841:
10842: =over 4
10843:
10844: =item *
10845:
10846: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
10847: F: full access
10848: U,I,K: authentication modes (cxx only)
10849: '': forbidden
10850: 1: user needs to choose course
10851: 2: browse allowed
10852: A: passphrase authentication needed
10853:
10854: =item *
10855:
10856: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
10857: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
10858: and course level
10859:
10860: =item *
10861:
10862: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
10863: (rolesplain.tab); plain text explanation of a user role term.
10864: $type is Course (default) or Community.
10865: If $forcedefault evaluates to true, text returned will be default
10866: text for $type. Otherwise, if this is a course, the text returned
10867: will be a custom name for the role (if defined in the course's
10868: environment). If no custom name is defined the default is returned.
10869:
10870: =item *
10871:
10872: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
10873: All arguments are optional. Returns a hash of a roles, either for
10874: co-author/assistant author roles for a user's Construction Space
10875: (default), or if $context is 'userroles', roles for the user himself,
10876: In the hash, keys are set to colon-separated $uname,$udom,$role, and
10877: (optionally) if $withsec is true, a fourth colon-separated item - $section.
10878: For each key, value is set to colon-separated start and end times for
10879: the role. If no username and domain are specified, will default to
10880: current user/domain. Types, roles, and roledoms are references to arrays
10881: of role statuses (active, future or previous), roles
10882: (e.g., cc,in, st etc.) and domains of the roles which can be used
10883: to restrict the list of roles reported. If no array ref is
10884: provided for types, will default to return only active roles.
10885:
10886: =back
10887:
10888: =head2 User Modification
10889:
10890: =over 4
10891:
10892: =item *
10893:
10894: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
10895: user for the level given by URL. Optional start and end dates (leave empty
10896: string or zero for "no date")
10897:
10898: =item *
10899:
10900: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
10901: change a users, password, possible return values are: ok,
10902: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
10903: refused
10904:
10905: =item *
10906:
10907: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
10908:
10909: =item *
10910:
10911: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
10912: $forceid,$desiredhome,$email,$inststatus,$candelete) :
10913:
10914: will update user information (firstname,middlename,lastname,generation,
10915: permanentemail), and if forceid is true, student/employee ID also.
10916: A user's institutional affiliation(s) can also be updated.
10917: User information fields will not be overwritten with empty entries
10918: unless the field is included in the $candelete array reference.
10919: This array is included when a single user is modified via "Manage Users",
10920: or when Autoupdate.pl is run by cron in a domain.
10921:
10922: =item *
10923:
10924: modifystudent
10925:
10926: modify a student's enrollment and identification information.
10927: The course id is resolved based on the current users environment.
10928: This means the envoking user must be a course coordinator or otherwise
10929: associated with a course.
10930:
10931: This call is essentially a wrapper for lonnet::modifyuser and
10932: lonnet::modify_student_enrollment
10933:
10934: Inputs:
10935:
10936: =over 4
10937:
10938: =item B<$udom> Student's loncapa domain
10939:
10940: =item B<$uname> Student's loncapa login name
10941:
10942: =item B<$uid> Student/Employee ID
10943:
10944: =item B<$umode> Student's authentication mode
10945:
10946: =item B<$upass> Student's password
10947:
10948: =item B<$first> Student's first name
10949:
10950: =item B<$middle> Student's middle name
10951:
10952: =item B<$last> Student's last name
10953:
10954: =item B<$gene> Student's generation
10955:
10956: =item B<$usec> Student's section in course
10957:
10958: =item B<$end> Unix time of the roles expiration
10959:
10960: =item B<$start> Unix time of the roles start date
10961:
10962: =item B<$forceid> If defined, allow $uid to be changed
10963:
10964: =item B<$desiredhome> server to use as home server for student
10965:
10966: =item B<$email> Student's permanent e-mail address
10967:
10968: =item B<$type> Type of enrollment (auto or manual)
10969:
10970: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
10971:
10972: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
10973:
10974: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
10975:
10976: =item B<$context> role change context (shown in User Management Logs display in a course)
10977:
10978: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10979:
10980: =back
10981:
10982: =item *
10983:
10984: modify_student_enrollment
10985:
10986: Change a students enrollment status in a class. The environment variable
10987: 'role.request.course' must be defined for this function to proceed.
10988:
10989: Inputs:
10990:
10991: =over 4
10992:
10993: =item $udom, students domain
10994:
10995: =item $uname, students name
10996:
10997: =item $uid, students user id
10998:
10999: =item $first, students first name
11000:
11001: =item $middle
11002:
11003: =item $last
11004:
11005: =item $gene
11006:
11007: =item $usec
11008:
11009: =item $end
11010:
11011: =item $start
11012:
11013: =item $type
11014:
11015: =item $locktype
11016:
11017: =item $cid
11018:
11019: =item $selfenroll
11020:
11021: =item $context
11022:
11023: =back
11024:
11025:
11026: =item *
11027:
11028: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11029: custom role; give a custom role to a user for the level given by URL. Specify
11030: name and domain of role author, and role name
11031:
11032: =item *
11033:
11034: revokerole($udom,$uname,$url,$role) : revoke a role for url
11035:
11036: =item *
11037:
11038: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
11039:
11040: =back
11041:
11042: =head2 Course Infomation
11043:
11044: =over 4
11045:
11046: =item *
11047:
11048: coursedescription($courseid,$options) : returns a hash of information about the
11049: specified course id, including all environment settings for the
11050: course, the description of the course will be in the hash under the
11051: key 'description'
11052:
11053: $options is an optional parameter that if supplied is a hash reference that controls
11054: what how this function works. It has the following key/values:
11055:
11056: =over 4
11057:
11058: =item freshen_cache
11059:
11060: If defined, and the environment cache for the course is valid, it is
11061: returned in the returned hash.
11062:
11063: =item one_time
11064:
11065: If defined, the last cache time is set to _now_
11066:
11067: =item user
11068:
11069: If defined, the supplied username is used instead of the current user.
11070:
11071:
11072: =back
11073:
11074: =item *
11075:
11076: resdata($name,$domain,$type,@which) : request for current parameter
11077: setting for a specific $type, where $type is either 'course' or 'user',
11078: @what should be a list of parameters to ask about. This routine caches
11079: answers for 5 minutes.
11080:
11081: =item *
11082:
11083: get_courseresdata($courseid, $domain) : dump the entire course resource
11084: data base, returning a hash that is keyed by the resource name and has
11085: values that are the resource value. I believe that the timestamps and
11086: versions are also returned.
11087:
11088:
11089: =back
11090:
11091: =head2 Course Modification
11092:
11093: =over 4
11094:
11095: =item *
11096:
11097: writecoursepref($courseid,%prefs) : write preferences (environment
11098: database) for a course
11099:
11100: =item *
11101:
11102: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11103:
11104: =item *
11105:
11106: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11107:
11108: =back
11109:
11110: =head2 Resource Subroutines
11111:
11112: =over 4
11113:
11114: =item *
11115:
11116: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
11117:
11118: =item *
11119:
11120: repcopy($filename) : subscribes to the requested file, and attempts to
11121: replicate from the owning library server, Might return
11122: 'unavailable', 'not_found', 'forbidden', 'ok', or
11123: 'bad_request', also attempts to grab the metadata for the
11124: resource. Expects the local filesystem pathname
11125: (/home/httpd/html/res/....)
11126:
11127: =back
11128:
11129: =head2 Resource Information
11130:
11131: =over 4
11132:
11133: =item *
11134:
11135: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
11136: a vairety of different possible values, $varname should be a request
11137: string, and the other parameters can be used to specify who and what
11138: one is asking about.
11139:
11140: Possible values for $varname are environment.lastname (or other item
11141: from the envirnment hash), user.name (or someother aspect about the
11142: user), resource.0.maxtries (or some other part and parameter of a
11143: resource)
11144:
11145: =item *
11146:
11147: directcondval($number) : get current value of a condition; reads from a state
11148: string
11149:
11150: =item *
11151:
11152: condval($condidx) : value of condition index based on state
11153:
11154: =item *
11155:
11156: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
11157: resource's metadata, $what should be either a specific key, or either
11158: 'keys' (to get a list of possible keys) or 'packages' to get a list of
11159: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
11160:
11161: this function automatically caches all requests
11162:
11163: =item *
11164:
11165: metadata_query($query,$custom,$customshow) : make a metadata query against the
11166: network of library servers; returns file handle of where SQL and regex results
11167: will be stored for query
11168:
11169: =item *
11170:
11171: symbread($filename) : return symbolic list entry (filename argument optional);
11172: returns the data handle
11173:
11174: =item *
11175:
11176: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
11177: a possible symb for the URL in $thisfn, and if is an encryypted
11178: resource that the user accessed using /enc/ returns a 1 on success, 0
11179: on failure, user must be in a course, as it assumes the existance of
11180: the course initial hash, and uses $env('request.course.id'}
11181:
11182:
11183: =item *
11184:
11185: symbclean($symb) : removes versions numbers from a symb, returns the
11186: cleaned symb
11187:
11188: =item *
11189:
11190: is_on_map($uri) : checks if the $uri is somewhere on the current
11191: course map, user must be in a course for it to work.
11192:
11193: =item *
11194:
11195: numval($salt) : return random seed value (addend for rndseed)
11196:
11197: =item *
11198:
11199: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
11200: a random seed, all arguments are optional, if they aren't sent it uses the
11201: environment to derive them. Note: if symb isn't sent and it can't get one
11202: from &symbread it will use the current time as its return value
11203:
11204: =item *
11205:
11206: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
11207: unfakeable, receipt
11208:
11209: =item *
11210:
11211: receipt() : API to ireceipt working off of env values; given out to users
11212:
11213: =item *
11214:
11215: countacc($url) : count the number of accesses to a given URL
11216:
11217: =item *
11218:
11219: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
11220:
11221: =item *
11222:
11223: checkin($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 $tcrsid)
11224:
11225: =item *
11226:
11227: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
11228:
11229: =item *
11230:
11231: devalidate($symb) : devalidate temporary spreadsheet calculations,
11232: forcing spreadsheet to reevaluate the resource scores next time.
11233:
11234: =back
11235:
11236: =head2 Storing/Retreiving Data
11237:
11238: =over 4
11239:
11240: =item *
11241:
11242: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
11243: for this url; hashref needs to be given and should be a \%hashname; the
11244: remaining args aren't required and if they aren't passed or are '' they will
11245: be derived from the env
11246:
11247: =item *
11248:
11249: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
11250: uses critical subroutine
11251:
11252: =item *
11253:
11254: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
11255: all args are optional
11256:
11257: =item *
11258:
11259: dumpstore($namespace,$udom,$uname,$regexp,$range) :
11260: dumps the complete (or key matching regexp) namespace into a hash
11261: ($udom, $uname, $regexp, $range are optional) for a namespace that is
11262: normally &store()ed into
11263:
11264: $range should be either an integer '100' (give me the first 100
11265: matching records)
11266: or be two integers sperated by a - with no spaces
11267: '30-50' (give me the 30th through the 50th matching
11268: records)
11269:
11270:
11271: =item *
11272:
11273: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
11274: replaces a &store() version of data with a replacement set of data
11275: for a particular resource in a namespace passed in the $storehash hash
11276: reference
11277:
11278: =item *
11279:
11280: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
11281: works very similar to store/cstore, but all data is stored in a
11282: temporary location and can be reset using tmpreset, $storehash should
11283: be a hash reference, returns nothing on success
11284:
11285: =item *
11286:
11287: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
11288: similar to restore, but all data is stored in a temporary location and
11289: can be reset using tmpreset. Returns a hash of values on success,
11290: error string otherwise.
11291:
11292: =item *
11293:
11294: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
11295: deltes all keys for $symb form the temporary storage hash.
11296:
11297: =item *
11298:
11299: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11300: reference filled in from namesp ($udom and $uname are optional)
11301:
11302: =item *
11303:
11304: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
11305: namesp ($udom and $uname are optional)
11306:
11307: =item *
11308:
11309: dump($namespace,$udom,$uname,$regexp,$range) :
11310: dumps the complete (or key matching regexp) namespace into a hash
11311: ($udom, $uname, $regexp, $range are optional)
11312:
11313: $range should be either an integer '100' (give me the first 100
11314: matching records)
11315: or be two integers sperated by a - with no spaces
11316: '30-50' (give me the 30th through the 50th matching
11317: records)
11318: =item *
11319:
11320: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
11321: $store can be a scalar, an array reference, or if the amount to be
11322: incremented is > 1, a hash reference.
11323:
11324: ($udom and $uname are optional)
11325:
11326: =item *
11327:
11328: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
11329: ($udom and $uname are optional)
11330:
11331: =item *
11332:
11333: cput($namespace,$storehash,$udom,$uname) : critical put
11334: ($udom and $uname are optional)
11335:
11336: =item *
11337:
11338: newput($namespace,$storehash,$udom,$uname) :
11339:
11340: Attempts to store the items in the $storehash, but only if they don't
11341: currently exist, if this succeeds you can be certain that you have
11342: successfully created a new key value pair in the $namespace db.
11343:
11344:
11345: Args:
11346: $namespace: name of database to store values to
11347: $storehash: hashref to store to the db
11348: $udom: (optional) domain of user containing the db
11349: $uname: (optional) name of user caontaining the db
11350:
11351: Returns:
11352: 'ok' -> succeeded in storing all keys of $storehash
11353: 'key_exists: <key>' -> failed to anything out of $storehash, as at
11354: least <key> already existed in the db (other
11355: requested keys may also already exist)
11356: 'error: <msg>' -> unable to tie the DB or other error occurred
11357: 'con_lost' -> unable to contact request server
11358: 'refused' -> action was not allowed by remote machine
11359:
11360:
11361: =item *
11362:
11363: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11364: reference filled in from namesp (encrypts the return communication)
11365: ($udom and $uname are optional)
11366:
11367: =item *
11368:
11369: log($udom,$name,$home,$message) : write to permanent log for user; use
11370: critical subroutine
11371:
11372: =item *
11373:
11374: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
11375: array reference filled in from namespace found in domain level on either
11376: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
11377:
11378: =item *
11379:
11380: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
11381: domain level either on specified domain server ($uhome) or primary domain
11382: server ($udom and $uhome are optional)
11383:
11384: =item *
11385:
11386: get_domain_defaults($target_domain) : returns hash with defaults for
11387: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
11388: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
11389: or localauth), initial password or a kerberos realm, language (e.g., en-us).
11390: Values are retrieved from cache (if current), or from domain's configuration.db
11391: (if available), or lastly from values in lonTabs/dns_domain,tab,
11392: or lonTabs/domain.tab.
11393:
11394: %domdefaults = &get_auth_defaults($target_domain);
11395:
11396: =back
11397:
11398: =head2 Network Status Functions
11399:
11400: =over 4
11401:
11402: =item *
11403:
11404: dirlist($uri) : return directory list based on URI
11405:
11406: =item *
11407:
11408: spareserver() : find server with least workload from spare.tab
11409:
11410:
11411: =item *
11412:
11413: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
11414: if there is no corresponding loncapa host.
11415:
11416: =back
11417:
11418:
11419: =head2 Apache Request
11420:
11421: =over 4
11422:
11423: =item *
11424:
11425: ssi($url,%hash) : server side include, does a complete request cycle on url to
11426: localhost, posts hash
11427:
11428: =back
11429:
11430: =head2 Data to String to Data
11431:
11432: =over 4
11433:
11434: =item *
11435:
11436: hash2str(%hash) : convert a hash into a string complete with escaping and '='
11437: and '&' separators, supports elements that are arrayrefs and hashrefs
11438:
11439: =item *
11440:
11441: hashref2str($hashref) : convert a hashref into a string complete with
11442: escaping and '=' and '&' separators, supports elements that are
11443: arrayrefs and hashrefs
11444:
11445: =item *
11446:
11447: arrayref2str($arrayref) : convert an arrayref into a string complete
11448: with escaping and '&' separators, supports elements that are arrayrefs
11449: and hashrefs
11450:
11451: =item *
11452:
11453: str2hash($string) : convert string to hash using unescaping and
11454: splitting on '=' and '&', supports elements that are arrayrefs and
11455: hashrefs
11456:
11457: =item *
11458:
11459: str2array($string) : convert string to hash using unescaping and
11460: splitting on '&', supports elements that are arrayrefs and hashrefs
11461:
11462: =back
11463:
11464: =head2 Logging Routines
11465:
11466:
11467: These routines allow one to make log messages in the lonnet.log and
11468: lonnet.perm logfiles.
11469:
11470: =over 4
11471:
11472: =item *
11473:
11474: logtouch() : make sure the logfile, lonnet.log, exists
11475:
11476: =item *
11477:
11478: logthis() : append message to the normal lonnet.log file, it gets
11479: preiodically rolled over and deleted.
11480:
11481: =item *
11482:
11483: logperm() : append a permanent message to lonnet.perm.log, this log
11484: file never gets deleted by any automated portion of the system, only
11485: messages of critical importance should go in here.
11486:
11487:
11488: =back
11489:
11490: =head2 General File Helper Routines
11491:
11492: =over 4
11493:
11494: =item *
11495:
11496: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
11497: (a) files in /uploaded
11498: (i) If a local copy of the file exists -
11499: compares modification date of local copy with last-modified date for
11500: definitive version stored on home server for course. If local copy is
11501: stale, requests a new version from the home server and stores it.
11502: If the original has been removed from the home server, then local copy
11503: is unlinked.
11504: (ii) If local copy does not exist -
11505: requests the file from the home server and stores it.
11506:
11507: If $caller is 'uploadrep':
11508: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
11509: for request for files originally uploaded via DOCS.
11510: - returns 'ok' if fresh local copy now available, -1 otherwise.
11511:
11512: Otherwise:
11513: This indicates a call from the content generation phase of the request.
11514: - returns the entire contents of the file or -1.
11515:
11516: (b) files in /res
11517: - returns the entire contents of a file or -1;
11518: it properly subscribes to and replicates the file if neccessary.
11519:
11520:
11521: =item *
11522:
11523: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
11524: reference
11525:
11526: returns either a stat() list of data about the file or an empty list
11527: if the file doesn't exist or couldn't find out about it (connection
11528: problems or user unknown)
11529:
11530: =item *
11531:
11532: filelocation($dir,$file) : returns file system location of a file
11533: based on URI; meant to be "fairly clean" absolute reference, $dir is a
11534: directory that relative $file lookups are to looked in ($dir of /a/dir
11535: and a file of ../bob will become /a/bob)
11536:
11537: =item *
11538:
11539: hreflocation($dir,$file) : returns file system location or a URL; same as
11540: filelocation except for hrefs
11541:
11542: =item *
11543:
11544: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
11545:
11546: =back
11547:
11548: =head2 Usererfile file routines (/uploaded*)
11549:
11550: =over 4
11551:
11552: =item *
11553:
11554: userfileupload(): main rotine for putting a file in a user or course's
11555: filespace, arguments are,
11556:
11557: formname - required - this is the name of the element in $env where the
11558: filename, and the contents of the file to create/modifed exist
11559: the filename is in $env{'form.'.$formname.'.filename'} and the
11560: contents of the file is located in $env{'form.'.$formname}
11561: context - if coursedoc, store the file in the course of the active role
11562: of the current user;
11563: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
11564: if 'canceloverwrite': delete file in tmp/overwrites directory
11565: subdir - required - subdirectory to put the file in under ../userfiles/
11566: if undefined, it will be placed in "unknown"
11567:
11568: (This routine calls clean_filename() to remove any dangerous
11569: characters from the filename, and then calls finuserfileupload() to
11570: complete the transaction)
11571:
11572: returns either the url of the uploaded file (/uploaded/....) if successful
11573: and /adm/notfound.html if unsuccessful
11574:
11575: =item *
11576:
11577: clean_filename(): routine for cleaing a filename up for storage in
11578: userfile space, argument is:
11579:
11580: filename - proposed filename
11581:
11582: returns: the new clean filename
11583:
11584: =item *
11585:
11586: finishuserfileupload(): routine that creates and sends the file to
11587: userspace, probably shouldn't be called directly
11588:
11589: docuname: username or courseid of destination for the file
11590: docudom: domain of user/course of destination for the file
11591: formname: same as for userfileupload()
11592: fname: filename (including subdirectories) for the file
11593: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
11594: allfiles: reference to hash used to store objects found by parser
11595: codebase: reference to hash used for codebases of java objects found by parser
11596: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
11597: thumbheight: height (pixels) of thumbnail to be created for uploaded image
11598: resizewidth: width to be used to resize image using resizeImage from ImageMagick
11599: resizeheight: height to be used to resize image using resizeImage from ImageMagick
11600: context: if 'overwrite', will move the uploaded file from its temporary location to
11601: userfiles to facilitate overwriting a previously uploaded file with same name.
11602: mimetype: reference to scalar to accommodate mime type determined
11603: from File::MMagic if $parser = parse.
11604:
11605: returns either the url of the uploaded file (/uploaded/....) if successful
11606: and /adm/notfound.html if unsuccessful (or an error message if context
11607: was 'overwrite').
11608:
11609:
11610: =item *
11611:
11612: renameuserfile(): renames an existing userfile to a new name
11613:
11614: Args:
11615: docuname: username or courseid of destination for the file
11616: docudom: domain of user/course of destination for the file
11617: old: current file name (including any subdirs under userfiles)
11618: new: desired file name (including any subdirs under userfiles)
11619:
11620: =item *
11621:
11622: mkdiruserfile(): creates a directory is a userfiles dir
11623:
11624: Args:
11625: docuname: username or courseid of destination for the file
11626: docudom: domain of user/course of destination for the file
11627: dir: dir to create (including any subdirs under userfiles)
11628:
11629: =item *
11630:
11631: removeuserfile(): removes a file that exists in userfiles
11632:
11633: Args:
11634: docuname: username or courseid of destination for the file
11635: docudom: domain of user/course of destination for the file
11636: fname: filname to delete (including any subdirs under userfiles)
11637:
11638: =item *
11639:
11640: removeuploadedurl(): convience function for removeuserfile()
11641:
11642: Args:
11643: url: a full /uploaded/... url to delete
11644:
11645: =item *
11646:
11647: get_portfile_permissions():
11648: Args:
11649: domain: domain of user or course contain the portfolio files
11650: user: name of user or num of course contain the portfolio files
11651: Returns:
11652: hashref of a dump of the proper file_permissions.db
11653:
11654:
11655: =item *
11656:
11657: get_access_controls():
11658:
11659: Args:
11660: current_permissions: the hash ref returned from get_portfile_permissions()
11661: group: (optional) the group you want the files associated with
11662: file: (optional) the file you want access info on
11663:
11664: Returns:
11665: a hash (keys are file names) of hashes containing
11666: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
11667: values are XML containing access control settings (see below)
11668:
11669: Internal notes:
11670:
11671: access controls are stored in file_permissions.db as key=value pairs.
11672: key -> path to file/file_name\0uniqueID:scope_end_start
11673: where scope -> public,guest,course,group,domains or users.
11674: end -> UNIX time for end of access (0 -> no end date)
11675: start -> UNIX time for start of access
11676:
11677: value -> XML description of access control
11678: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
11679: <start></start>
11680: <end></end>
11681:
11682: <password></password> for scope type = guest
11683:
11684: <domain></domain> for scope type = course or group
11685: <number></number>
11686: <roles id="">
11687: <role></role>
11688: <access></access>
11689: <section></section>
11690: <group></group>
11691: </roles>
11692:
11693: <dom></dom> for scope type = domains
11694:
11695: <users> for scope type = users
11696: <user>
11697: <uname></uname>
11698: <udom></udom>
11699: </user>
11700: </users>
11701: </scope>
11702:
11703: Access data is also aggregated for each file in an additional key=value pair:
11704: key -> path to file/file_name\0accesscontrol
11705: value -> reference to hash
11706: hash contains key = value pairs
11707: where key = uniqueID:scope_end_start
11708: value = UNIX time record was last updated
11709:
11710: Used to improve speed of look-ups of access controls for each file.
11711:
11712: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
11713:
11714: modify_access_controls():
11715:
11716: Modifies access controls for a portfolio file
11717: Args
11718: 1. file name
11719: 2. reference to hash of required changes,
11720: 3. domain
11721: 4. username
11722: where domain,username are the domain of the portfolio owner
11723: (either a user or a course)
11724:
11725: Returns:
11726: 1. result of additions or updates ('ok' or 'error', with error message).
11727: 2. result of deletions ('ok' or 'error', with error message).
11728: 3. reference to hash of any new or updated access controls.
11729: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
11730: key = integer (inbound ID)
11731: value = uniqueID
11732:
11733: =back
11734:
11735: =head2 HTTP Helper Routines
11736:
11737: =over 4
11738:
11739: =item *
11740:
11741: escape() : unpack non-word characters into CGI-compatible hex codes
11742:
11743: =item *
11744:
11745: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
11746:
11747: =back
11748:
11749: =head1 PRIVATE SUBROUTINES
11750:
11751: =head2 Underlying communication routines (Shouldn't call)
11752:
11753: =over 4
11754:
11755: =item *
11756:
11757: subreply() : tries to pass a message to lonc, returns con_lost if incapable
11758:
11759: =item *
11760:
11761: reply() : uses subreply to send a message to remote machine, logs all failures
11762:
11763: =item *
11764:
11765: critical() : passes a critical message to another server; if cannot
11766: get through then place message in connection buffer directory and
11767: returns con_delayed, if incapable of saving message, returns
11768: con_failed
11769:
11770: =item *
11771:
11772: reconlonc() : tries to reconnect lonc client processes.
11773:
11774: =back
11775:
11776: =head2 Resource Access Logging
11777:
11778: =over 4
11779:
11780: =item *
11781:
11782: flushcourselogs() : flush (save) buffer logs and access logs
11783:
11784: =item *
11785:
11786: courselog($what) : save message for course in hash
11787:
11788: =item *
11789:
11790: courseacclog($what) : save message for course using &courselog(). Perform
11791: special processing for specific resource types (problems, exams, quizzes, etc).
11792:
11793: =item *
11794:
11795: goodbye() : flush course logs and log shutting down; it is called in srm.conf
11796: as a PerlChildExitHandler
11797:
11798: =back
11799:
11800: =head2 Other
11801:
11802: =over 4
11803:
11804: =item *
11805:
11806: symblist($mapname,%newhash) : update symbolic storage links
11807:
11808: =back
11809:
11810: =cut
11811:
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