1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1216 2013/03/01 04:17:31 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $apache
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$name,$id) = @_;
360: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
361: return $response;
362: }
363:
364: # -------------------------------------------------- Non-critical communication
365: sub subreply {
366: my ($cmd,$server)=@_;
367: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
368: #
369: # With loncnew process trimming, there's a timing hole between lonc server
370: # process exit and the master server picking up the listen on the AF_UNIX
371: # socket. In that time interval, a lock file will exist:
372:
373: my $lockfile=$peerfile.".lock";
374: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
375: sleep(1);
376: }
377: # At this point, either a loncnew parent is listening or an old lonc
378: # or loncnew child is listening so we can connect or everything's dead.
379: #
380: # We'll give the connection a few tries before abandoning it. If
381: # connection is not possible, we'll con_lost back to the client.
382: #
383: my $client;
384: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
385: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
386: Type => SOCK_STREAM,
387: Timeout => 10);
388: if ($client) {
389: last; # Connected!
390: } else {
391: &create_connection(&hostname($server),$server);
392: }
393: sleep(1); # Try again later if failed connection.
394: }
395: my $answer;
396: if ($client) {
397: print $client "sethost:$server:$cmd\n";
398: $answer=<$client>;
399: if (!$answer) { $answer="con_lost"; }
400: chomp($answer);
401: } else {
402: $answer = 'con_lost'; # Failed connection.
403: }
404: return $answer;
405: }
406:
407: sub reply {
408: my ($cmd,$server)=@_;
409: unless (defined(&hostname($server))) { return 'no_such_host'; }
410: my $answer=subreply($cmd,$server);
411: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
412: &logthis("<font color=\"blue\">WARNING:".
413: " $cmd to $server returned $answer</font>");
414: }
415: return $answer;
416: }
417:
418: # ----------------------------------------------------------- Send USR1 to lonc
419:
420: sub reconlonc {
421: my ($lonid) = @_;
422: my $hostname = &hostname($lonid);
423: if ($lonid) {
424: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
425: if ($hostname && -e $peerfile) {
426: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
427: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
428: Type => SOCK_STREAM,
429: Timeout => 10);
430: if ($client) {
431: print $client ("reset_retries\n");
432: my $answer=<$client>;
433: #reset just this one.
434: }
435: }
436: return;
437: }
438:
439: &logthis("Trying to reconnect lonc");
440: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
441: if (open(my $fh,"<$loncfile")) {
442: my $loncpid=<$fh>;
443: chomp($loncpid);
444: if (kill 0 => $loncpid) {
445: &logthis("lonc at pid $loncpid responding, sending USR1");
446: kill USR1 => $loncpid;
447: sleep 1;
448: } else {
449: &logthis(
450: "<font color=\"blue\">WARNING:".
451: " lonc at pid $loncpid not responding, giving up</font>");
452: }
453: } else {
454: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
455: }
456: }
457:
458: # ------------------------------------------------------ Critical communication
459:
460: sub critical {
461: my ($cmd,$server)=@_;
462: unless (&hostname($server)) {
463: &logthis("<font color=\"blue\">WARNING:".
464: " Critical message to unknown server ($server)</font>");
465: return 'no_such_host';
466: }
467: my $answer=reply($cmd,$server);
468: if ($answer eq 'con_lost') {
469: &reconlonc("$perlvar{'lonSockDir'}/$server");
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: my $now=time;
473: my $middlename=$cmd;
474: $middlename=substr($middlename,0,16);
475: $middlename=~s/\W//g;
476: my $dfilename=
477: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
478: $dumpcount++;
479: {
480: my $dfh;
481: if (open($dfh,">$dfilename")) {
482: print $dfh "$cmd\n";
483: close($dfh);
484: }
485: }
486: sleep 2;
487: my $wcmd='';
488: {
489: my $dfh;
490: if (open($dfh,"<$dfilename")) {
491: $wcmd=<$dfh>;
492: close($dfh);
493: }
494: }
495: chomp($wcmd);
496: if ($wcmd eq $cmd) {
497: &logthis("<font color=\"blue\">WARNING: ".
498: "Connection buffer $dfilename: $cmd</font>");
499: &logperm("D:$server:$cmd");
500: return 'con_delayed';
501: } else {
502: &logthis("<font color=\"red\">CRITICAL:"
503: ." Critical connection failed: $server $cmd</font>");
504: &logperm("F:$server:$cmd");
505: return 'con_failed';
506: }
507: }
508: }
509: return $answer;
510: }
511:
512: # ------------------------------------------- check if return value is an error
513:
514: sub error {
515: my ($result) = @_;
516: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
517: if ($2 == 2) { return undef; }
518: return $1;
519: }
520: return undef;
521: }
522:
523: sub convert_and_load_session_env {
524: my ($lonidsdir,$handle)=@_;
525: my @profile;
526: {
527: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
528: if (!$opened) {
529: return 0;
530: }
531: flock($idf,LOCK_SH);
532: @profile=<$idf>;
533: close($idf);
534: }
535: my %temp_env;
536: foreach my $line (@profile) {
537: if ($line !~ m/=/) {
538: return 0;
539: }
540: chomp($line);
541: my ($envname,$envvalue)=split(/=/,$line,2);
542: $temp_env{&unescape($envname)} = &unescape($envvalue);
543: }
544: unlink("$lonidsdir/$handle.id");
545: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
546: 0640)) {
547: %disk_env = %temp_env;
548: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
549: untie(%disk_env);
550: }
551: return 1;
552: }
553:
554: # ------------------------------------------- Transfer profile into environment
555: my $env_loaded;
556: sub transfer_profile_to_env {
557: my ($lonidsdir,$handle,$force_transfer) = @_;
558: if (!$force_transfer && $env_loaded) { return; }
559:
560: if (!defined($lonidsdir)) {
561: $lonidsdir = $perlvar{'lonIDsDir'};
562: }
563: if (!defined($handle)) {
564: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
565: }
566:
567: my $convert;
568: {
569: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
570: if (!$opened) {
571: return;
572: }
573: flock($idf,LOCK_SH);
574: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
575: &GDBM_READER(),0640)) {
576: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
577: untie(%disk_env);
578: } else {
579: $convert = 1;
580: }
581: }
582: if ($convert) {
583: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
584: &logthis("Failed to load session, or convert session.");
585: }
586: }
587:
588: my %remove;
589: while ( my $envname = each(%env) ) {
590: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
591: if ($time < time-300) {
592: $remove{$key}++;
593: }
594: }
595: }
596:
597: $env{'user.environment'} = "$lonidsdir/$handle.id";
598: $env_loaded=1;
599: foreach my $expired_key (keys(%remove)) {
600: &delenv($expired_key);
601: }
602: }
603:
604: # ---------------------------------------------------- Check for valid session
605: sub check_for_valid_session {
606: my ($r,$name) = @_;
607: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
608: if ($name eq '') {
609: $name = 'lonID';
610: }
611: my $lonid=$cookies{$name};
612: return undef if (!$lonid);
613:
614: my $handle=&LONCAPA::clean_handle($lonid->value);
615: my $lonidsdir;
616: if ($name eq 'lonDAV') {
617: $lonidsdir=$r->dir_config('lonDAVsessDir');
618: } else {
619: $lonidsdir=$r->dir_config('lonIDsDir');
620: }
621: return undef if (!-e "$lonidsdir/$handle.id");
622:
623: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
624: return undef if (!$opened);
625:
626: flock($idf,LOCK_SH);
627: my %disk_env;
628: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
629: &GDBM_READER(),0640)) {
630: return undef;
631: }
632:
633: if (!defined($disk_env{'user.name'})
634: || !defined($disk_env{'user.domain'})) {
635: return undef;
636: }
637: if (($r->user() eq '') && ($apache >= 2.4)) {
638: if ($disk_env{'user.domain'} eq $r->dir_config('lonDefDomain')) {
639: $r->user($disk_env{'user.name'});
640: } else {
641: $r->user($disk_env{'user.name'}.':'.$disk_env{'user.domain'});
642: }
643: }
644: return $handle;
645: }
646:
647: sub timed_flock {
648: my ($file,$lock_type) = @_;
649: my $failed=0;
650: eval {
651: local $SIG{__DIE__}='DEFAULT';
652: local $SIG{ALRM}=sub {
653: $failed=1;
654: die("failed lock");
655: };
656: alarm(13);
657: flock($file,$lock_type);
658: alarm(0);
659: };
660: if ($failed) {
661: return undef;
662: } else {
663: return 1;
664: }
665: }
666:
667: # ---------------------------------------------------------- Append Environment
668:
669: sub appenv {
670: my ($newenv,$roles) = @_;
671: if (ref($newenv) eq 'HASH') {
672: foreach my $key (keys(%{$newenv})) {
673: my $refused = 0;
674: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
675: $refused = 1;
676: if (ref($roles) eq 'ARRAY') {
677: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
678: if (grep(/^\Q$role\E$/,@{$roles})) {
679: $refused = 0;
680: }
681: }
682: }
683: if ($refused) {
684: &logthis("<font color=\"blue\">WARNING: ".
685: "Attempt to modify environment ".$key." to ".$newenv->{$key}
686: .'</font>');
687: delete($newenv->{$key});
688: } else {
689: $env{$key}=$newenv->{$key};
690: }
691: }
692: my $opened = open(my $env_file,'+<',$env{'user.environment'});
693: if ($opened
694: && &timed_flock($env_file,LOCK_EX)
695: &&
696: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
697: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
698: while (my ($key,$value) = each(%{$newenv})) {
699: $disk_env{$key} = $value;
700: }
701: untie(%disk_env);
702: }
703: }
704: return 'ok';
705: }
706: # ----------------------------------------------------- Delete from Environment
707:
708: sub delenv {
709: my ($delthis,$regexp,$roles) = @_;
710: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
711: my $refused = 1;
712: if (ref($roles) eq 'ARRAY') {
713: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
714: if (grep(/^\Q$role\E$/,@{$roles})) {
715: $refused = 0;
716: }
717: }
718: if ($refused) {
719: &logthis("<font color=\"blue\">WARNING: ".
720: "Attempt to delete from environment ".$delthis);
721: return 'error';
722: }
723: }
724: my $opened = open(my $env_file,'+<',$env{'user.environment'});
725: if ($opened
726: && &timed_flock($env_file,LOCK_EX)
727: &&
728: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
729: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
730: foreach my $key (keys(%disk_env)) {
731: if ($regexp) {
732: if ($key=~/^$delthis/) {
733: delete($env{$key});
734: delete($disk_env{$key});
735: }
736: } else {
737: if ($key=~/^\Q$delthis\E/) {
738: delete($env{$key});
739: delete($disk_env{$key});
740: }
741: }
742: }
743: untie(%disk_env);
744: }
745: return 'ok';
746: }
747:
748: sub get_env_multiple {
749: my ($name) = @_;
750: my @values;
751: if (defined($env{$name})) {
752: # exists is it an array
753: if (ref($env{$name})) {
754: @values=@{ $env{$name} };
755: } else {
756: $values[0]=$env{$name};
757: }
758: }
759: return(@values);
760: }
761:
762: # ------------------------------------------------------------------- Locking
763:
764: sub set_lock {
765: my ($text)=@_;
766: $locknum++;
767: my $id=$$.'-'.$locknum;
768: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
769: 'session.lock.'.$id => $text});
770: return $id;
771: }
772:
773: sub get_locks {
774: my $num=0;
775: my %texts=();
776: foreach my $lock (split(/\,/,$env{'session.locks'})) {
777: if ($lock=~/\w/) {
778: $num++;
779: $texts{$lock}=$env{'session.lock.'.$lock};
780: }
781: }
782: return ($num,%texts);
783: }
784:
785: sub remove_lock {
786: my ($id)=@_;
787: my $newlocks='';
788: foreach my $lock (split(/\,/,$env{'session.locks'})) {
789: if (($lock=~/\w/) && ($lock ne $id)) {
790: $newlocks.=','.$lock;
791: }
792: }
793: &appenv({'session.locks' => $newlocks});
794: &delenv('session.lock.'.$id);
795: }
796:
797: sub remove_all_locks {
798: my $activelocks=$env{'session.locks'};
799: foreach my $lock (split(/\,/,$env{'session.locks'})) {
800: if ($lock=~/\w/) {
801: &remove_lock($lock);
802: }
803: }
804: }
805:
806:
807: # ------------------------------------------ Find out current server userload
808: sub userload {
809: my $numusers=0;
810: {
811: opendir(LONIDS,$perlvar{'lonIDsDir'});
812: my $filename;
813: my $curtime=time;
814: while ($filename=readdir(LONIDS)) {
815: next if ($filename eq '.' || $filename eq '..');
816: next if ($filename =~ /publicuser_\d+\.id/);
817: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
818: if ($curtime-$mtime < 1800) { $numusers++; }
819: }
820: closedir(LONIDS);
821: }
822: my $userloadpercent=0;
823: my $maxuserload=$perlvar{'lonUserLoadLim'};
824: if ($maxuserload) {
825: $userloadpercent=100*$numusers/$maxuserload;
826: }
827: $userloadpercent=sprintf("%.2f",$userloadpercent);
828: return $userloadpercent;
829: }
830:
831: # ------------------------------ Find server with least workload from spare.tab
832:
833: sub spareserver {
834: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
835: my $spare_server;
836: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
837: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
838: : $userloadpercent;
839: my ($uint_dom,$remotesessions);
840: if (($udom ne '') && (&domain($udom) ne '')) {
841: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
842: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
843: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
844: $remotesessions = $udomdefaults{'remotesessions'};
845: }
846: my $spareshash = &this_host_spares($udom);
847: if (ref($spareshash) eq 'HASH') {
848: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
849: foreach my $try_server (@{ $spareshash->{'primary'} }) {
850: if ($uint_dom) {
851: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
852: $try_server));
853: }
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858:
859: my $found_server = ($spare_server ne '' && $lowest_load < 100);
860:
861: if (!$found_server) {
862: if (ref($spareshash->{'default'}) eq 'ARRAY') {
863: foreach my $try_server (@{ $spareshash->{'default'} }) {
864: if ($uint_dom) {
865: next unless (&spare_can_host($udom,$uint_dom,
866: $remotesessions,$try_server));
867: }
868: ($spare_server, $lowest_load) =
869: &compare_server_load($try_server, $spare_server, $lowest_load);
870: }
871: }
872: }
873: }
874:
875: if (!$want_server_name) {
876: my $protocol = 'http';
877: if ($protocol{$spare_server} eq 'https') {
878: $protocol = $protocol{$spare_server};
879: }
880: if (defined($spare_server)) {
881: my $hostname = &hostname($spare_server);
882: if (defined($hostname)) {
883: $spare_server = $protocol.'://'.$hostname;
884: }
885: }
886: }
887: return $spare_server;
888: }
889:
890: sub compare_server_load {
891: my ($try_server, $spare_server, $lowest_load) = @_;
892:
893: my $loadans = &reply('load', $try_server);
894: my $userloadans = &reply('userload',$try_server);
895:
896: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
897: return ($spare_server, $lowest_load); #didn't get a number from the server
898: }
899:
900: my $load;
901: if ($loadans =~ /\d/) {
902: if ($userloadans =~ /\d/) {
903: #both are numbers, pick the bigger one
904: $load = ($loadans > $userloadans) ? $loadans
905: : $userloadans;
906: } else {
907: $load = $loadans;
908: }
909: } else {
910: $load = $userloadans;
911: }
912:
913: if (($load =~ /\d/) && ($load < $lowest_load)) {
914: $spare_server = $try_server;
915: $lowest_load = $load;
916: }
917: return ($spare_server,$lowest_load);
918: }
919:
920: # --------------------------- ask offload servers if user already has a session
921: sub find_existing_session {
922: my ($udom,$uname) = @_;
923: my $spareshash = &this_host_spares($udom);
924: if (ref($spareshash) eq 'HASH') {
925: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
926: foreach my $try_server (@{ $spareshash->{'primary'} }) {
927: return $try_server if (&has_user_session($try_server, $udom, $uname));
928: }
929: }
930: if (ref($spareshash->{'default'}) eq 'ARRAY') {
931: foreach my $try_server (@{ $spareshash->{'default'} }) {
932: return $try_server if (&has_user_session($try_server, $udom, $uname));
933: }
934: }
935: }
936: return;
937: }
938:
939: # -------------------------------- ask if server already has a session for user
940: sub has_user_session {
941: my ($lonid,$udom,$uname) = @_;
942: my $result = &reply(join(':','userhassession',
943: map {&escape($_)} ($udom,$uname)),$lonid);
944: return 1 if ($result eq 'ok');
945:
946: return 0;
947: }
948:
949: # --------- determine least loaded server in a user's domain which allows login
950:
951: sub choose_server {
952: my ($udom,$checkloginvia) = @_;
953: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
954: my %servers = &get_servers($udom);
955: my $lowest_load = 30000;
956: my ($login_host,$hostname,$portal_path,$isredirect);
957: foreach my $lonhost (keys(%servers)) {
958: my $loginvia;
959: if ($checkloginvia) {
960: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
961: if ($loginvia) {
962: my ($server,$path) = split(/:/,$loginvia);
963: ($login_host, $lowest_load) =
964: &compare_server_load($server, $login_host, $lowest_load);
965: if ($login_host eq $server) {
966: $portal_path = $path;
967: $isredirect = 1;
968: }
969: } else {
970: ($login_host, $lowest_load) =
971: &compare_server_load($lonhost, $login_host, $lowest_load);
972: if ($login_host eq $lonhost) {
973: $portal_path = '';
974: $isredirect = '';
975: }
976: }
977: } else {
978: ($login_host, $lowest_load) =
979: &compare_server_load($lonhost, $login_host, $lowest_load);
980: }
981: }
982: if ($login_host ne '') {
983: $hostname = &hostname($login_host);
984: }
985: return ($login_host,$hostname,$portal_path,$isredirect);
986: }
987:
988: # --------------------------------------------- Try to change a user's password
989:
990: sub changepass {
991: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
992: $currentpass = &escape($currentpass);
993: $newpass = &escape($newpass);
994: my $lonhost = $perlvar{'lonHostID'};
995: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
996: $server);
997: if (! $answer) {
998: &logthis("No reply on password change request to $server ".
999: "by $uname in domain $udom.");
1000: } elsif ($answer =~ "^ok") {
1001: &logthis("$uname in $udom successfully changed their password ".
1002: "on $server.");
1003: } elsif ($answer =~ "^pwchange_failure") {
1004: &logthis("$uname in $udom was unable to change their password ".
1005: "on $server. The action was blocked by either lcpasswd ".
1006: "or pwchange");
1007: } elsif ($answer =~ "^non_authorized") {
1008: &logthis("$uname in $udom did not get their password correct when ".
1009: "attempting to change it on $server.");
1010: } elsif ($answer =~ "^auth_mode_error") {
1011: &logthis("$uname in $udom attempted to change their password despite ".
1012: "not being locally or internally authenticated on $server.");
1013: } elsif ($answer =~ "^unknown_user") {
1014: &logthis("$uname in $udom attempted to change their password ".
1015: "on $server but were unable to because $server is not ".
1016: "their home server.");
1017: } elsif ($answer =~ "^refused") {
1018: &logthis("$server refused to change $uname in $udom password because ".
1019: "it was sent an unencrypted request to change the password.");
1020: } elsif ($answer =~ "invalid_client") {
1021: &logthis("$server refused to change $uname in $udom password because ".
1022: "it was a reset by e-mail originating from an invalid server.");
1023: }
1024: return $answer;
1025: }
1026:
1027: # ----------------------- Try to determine user's current authentication scheme
1028:
1029: sub queryauthenticate {
1030: my ($uname,$udom)=@_;
1031: my $uhome=&homeserver($uname,$udom);
1032: if (!$uhome) {
1033: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1034: return 'no_host';
1035: }
1036: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1037: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1038: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1039: }
1040: return $answer;
1041: }
1042:
1043: # --------- Try to authenticate user from domain's lib servers (first this one)
1044:
1045: sub authenticate {
1046: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1047: $upass=&escape($upass);
1048: $uname= &LONCAPA::clean_username($uname);
1049: my $uhome=&homeserver($uname,$udom,1);
1050: my $newhome;
1051: if ((!$uhome) || ($uhome eq 'no_host')) {
1052: # Maybe the machine was offline and only re-appeared again recently?
1053: &reconlonc();
1054: # One more
1055: $uhome=&homeserver($uname,$udom,1);
1056: if (($uhome eq 'no_host') && $checkdefauth) {
1057: if (defined(&domain($udom,'primary'))) {
1058: $newhome=&domain($udom,'primary');
1059: }
1060: if ($newhome ne '') {
1061: $uhome = $newhome;
1062: }
1063: }
1064: if ((!$uhome) || ($uhome eq 'no_host')) {
1065: &logthis("User $uname at $udom is unknown in authenticate");
1066: return 'no_host';
1067: }
1068: }
1069: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1070: if ($answer eq 'authorized') {
1071: if ($newhome) {
1072: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1073: return 'no_account_on_host';
1074: } else {
1075: &logthis("User $uname at $udom authorized by $uhome");
1076: return $uhome;
1077: }
1078: }
1079: if ($answer eq 'non_authorized') {
1080: &logthis("User $uname at $udom rejected by $uhome");
1081: return 'no_host';
1082: }
1083: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1084: return 'no_host';
1085: }
1086:
1087: sub can_host_session {
1088: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1089: my $canhost = 1;
1090: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1091: if (ref($remotesessions) eq 'HASH') {
1092: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1093: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1094: $canhost = 0;
1095: } else {
1096: $canhost = 1;
1097: }
1098: }
1099: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1100: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1101: $canhost = 1;
1102: } else {
1103: $canhost = 0;
1104: }
1105: }
1106: if ($canhost) {
1107: if ($remotesessions->{'version'} ne '') {
1108: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1109: if ($reqmajor ne '' && $reqminor ne '') {
1110: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1111: my $major = $1;
1112: my $minor = $2;
1113: if (($major < $reqmajor ) ||
1114: (($major == $reqmajor) && ($minor < $reqminor))) {
1115: $canhost = 0;
1116: }
1117: } else {
1118: $canhost = 0;
1119: }
1120: }
1121: }
1122: }
1123: }
1124: if ($canhost) {
1125: if (ref($hostedsessions) eq 'HASH') {
1126: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1127: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1128: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1129: if (($uint_dom ne '') &&
1130: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1131: $canhost = 0;
1132: } else {
1133: $canhost = 1;
1134: }
1135: }
1136: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1137: if (($uint_dom ne '') &&
1138: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1139: $canhost = 1;
1140: } else {
1141: $canhost = 0;
1142: }
1143: }
1144: }
1145: }
1146: return $canhost;
1147: }
1148:
1149: sub spare_can_host {
1150: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1151: my $canhost=1;
1152: my @intdoms;
1153: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1154: if (ref($internet_names) eq 'ARRAY') {
1155: @intdoms = @{$internet_names};
1156: }
1157: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1158: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1159: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1160: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1161: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1162: $canhost = &can_host_session($udom,$try_server,$remoterev,
1163: $remotesessions,
1164: $defdomdefaults{'hostedsessions'});
1165: }
1166: return $canhost;
1167: }
1168:
1169: sub this_host_spares {
1170: my ($dom) = @_;
1171: my ($dom_in_use,$lonhost_in_use,$result);
1172: my @hosts = ¤t_machine_ids();
1173: foreach my $lonhost (@hosts) {
1174: if (&host_domain($lonhost) eq $dom) {
1175: $dom_in_use = $dom;
1176: $lonhost_in_use = $lonhost;
1177: last;
1178: }
1179: }
1180: if ($dom_in_use ne '') {
1181: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1182: }
1183: if (ref($result) ne 'HASH') {
1184: $lonhost_in_use = $perlvar{'lonHostID'};
1185: $dom_in_use = &host_domain($lonhost_in_use);
1186: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1187: if (ref($result) ne 'HASH') {
1188: $result = \%spareid;
1189: }
1190: }
1191: return $result;
1192: }
1193:
1194: sub spares_for_offload {
1195: my ($dom_in_use,$lonhost_in_use) = @_;
1196: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1197: if (defined($cached)) {
1198: return $result;
1199: } else {
1200: my $cachetime = 60*60*24;
1201: my %domconfig =
1202: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1203: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1204: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1205: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1206: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1207: }
1208: }
1209: }
1210: }
1211: return;
1212: }
1213:
1214: sub get_lonbalancer_config {
1215: my ($servers) = @_;
1216: my ($currbalancer,$currtargets);
1217: if (ref($servers) eq 'HASH') {
1218: foreach my $server (keys(%{$servers})) {
1219: my %what = (
1220: spareid => 1,
1221: perlvar => 1,
1222: );
1223: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1224: if ($result eq 'ok') {
1225: if (ref($returnhash) eq 'HASH') {
1226: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1227: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1228: $currbalancer = $server;
1229: $currtargets = {};
1230: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1231: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1232: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1233: }
1234: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1235: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1236: }
1237: }
1238: last;
1239: }
1240: }
1241: }
1242: }
1243: }
1244: }
1245: return ($currbalancer,$currtargets);
1246: }
1247:
1248: sub check_loadbalancing {
1249: my ($uname,$udom) = @_;
1250: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1251: $rule_in_effect,$offloadto,$otherserver);
1252: my $lonhost = $perlvar{'lonHostID'};
1253: my @hosts = ¤t_machine_ids();
1254: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1255: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1256: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1257: my $serverhomedom = &host_domain($lonhost);
1258:
1259: my $cachetime = 60*60*24;
1260:
1261: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1262: $dom_in_use = $udom;
1263: $homeintdom = 1;
1264: } else {
1265: $dom_in_use = $serverhomedom;
1266: }
1267: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1268: unless (defined($cached)) {
1269: my %domconfig =
1270: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1271: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1272: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1273: }
1274: }
1275: if (ref($result) eq 'HASH') {
1276: ($is_balancer,$currtargets,$currrules) =
1277: &check_balancer_result($result,@hosts);
1278: if ($is_balancer) {
1279: if (ref($currrules) eq 'HASH') {
1280: if ($homeintdom) {
1281: if ($uname ne '') {
1282: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1283: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1284: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1285: $rule_in_effect = $currrules->{'_LC_author'};
1286: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1287: $rule_in_effect = $currrules->{'_LC_adv'}
1288: }
1289: }
1290: if ($rule_in_effect eq '') {
1291: my %userenv = &userenvironment($udom,$uname,'inststatus');
1292: if ($userenv{'inststatus'} ne '') {
1293: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1294: my ($othertitle,$usertypes,$types) =
1295: &Apache::loncommon::sorted_inst_types($udom);
1296: if (ref($types) eq 'ARRAY') {
1297: foreach my $type (@{$types}) {
1298: if (grep(/^\Q$type\E$/,@statuses)) {
1299: if (exists($currrules->{$type})) {
1300: $rule_in_effect = $currrules->{$type};
1301: }
1302: }
1303: }
1304: }
1305: } else {
1306: if (exists($currrules->{'default'})) {
1307: $rule_in_effect = $currrules->{'default'};
1308: }
1309: }
1310: }
1311: } else {
1312: if (exists($currrules->{'default'})) {
1313: $rule_in_effect = $currrules->{'default'};
1314: }
1315: }
1316: } else {
1317: if ($currrules->{'_LC_external'} ne '') {
1318: $rule_in_effect = $currrules->{'_LC_external'};
1319: }
1320: }
1321: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1322: $uname,$udom);
1323: }
1324: }
1325: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1326: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1327: unless (defined($cached)) {
1328: my %domconfig =
1329: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1330: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1331: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1332: }
1333: }
1334: if (ref($result) eq 'HASH') {
1335: ($is_balancer,$currtargets,$currrules) =
1336: &check_balancer_result($result,@hosts);
1337: if ($is_balancer) {
1338: if (ref($currrules) eq 'HASH') {
1339: if ($currrules->{'_LC_internetdom'} ne '') {
1340: $rule_in_effect = $currrules->{'_LC_internetdom'};
1341: }
1342: }
1343: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1344: $uname,$udom);
1345: }
1346: } else {
1347: if ($perlvar{'lonBalancer'} eq 'yes') {
1348: $is_balancer = 1;
1349: $offloadto = &this_host_spares($dom_in_use);
1350: }
1351: }
1352: } else {
1353: if ($perlvar{'lonBalancer'} eq 'yes') {
1354: $is_balancer = 1;
1355: $offloadto = &this_host_spares($dom_in_use);
1356: }
1357: }
1358: if ($is_balancer) {
1359: my $lowest_load = 30000;
1360: if (ref($offloadto) eq 'HASH') {
1361: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1362: foreach my $try_server (@{$offloadto->{'primary'}}) {
1363: ($otherserver,$lowest_load) =
1364: &compare_server_load($try_server,$otherserver,$lowest_load);
1365: }
1366: }
1367: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1368:
1369: if (!$found_server) {
1370: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1371: foreach my $try_server (@{$offloadto->{'default'}}) {
1372: ($otherserver,$lowest_load) =
1373: &compare_server_load($try_server,$otherserver,$lowest_load);
1374: }
1375: }
1376: }
1377: } elsif (ref($offloadto) eq 'ARRAY') {
1378: if (@{$offloadto} == 1) {
1379: $otherserver = $offloadto->[0];
1380: } elsif (@{$offloadto} > 1) {
1381: foreach my $try_server (@{$offloadto}) {
1382: ($otherserver,$lowest_load) =
1383: &compare_server_load($try_server,$otherserver,$lowest_load);
1384: }
1385: }
1386: }
1387: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1388: $is_balancer = 0;
1389: if ($uname ne '' && $udom ne '') {
1390: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1391:
1392: &appenv({'user.loadbalexempt' => $lonhost,
1393: 'user.loadbalcheck.time' => time});
1394: }
1395: }
1396: }
1397: }
1398: return ($is_balancer,$otherserver);
1399: }
1400:
1401: sub check_balancer_result {
1402: my ($result,@hosts) = @_;
1403: my ($is_balancer,$currtargets,$currrules);
1404: if (ref($result) eq 'HASH') {
1405: if ($result->{'lonhost'} ne '') {
1406: my $currbalancer = $result->{'lonhost'};
1407: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1408: $is_balancer = 1;
1409: $currtargets = $result->{'targets'};
1410: $currrules = $result->{'rules'};
1411: }
1412: } else {
1413: foreach my $key (keys(%{$result})) {
1414: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1415: (ref($result->{$key}) eq 'HASH')) {
1416: $is_balancer = 1;
1417: $currrules = $result->{$key}{'rules'};
1418: $currtargets = $result->{$key}{'targets'};
1419: last;
1420: }
1421: }
1422: }
1423: }
1424: return ($is_balancer,$currtargets,$currrules);
1425: }
1426:
1427: sub get_loadbalancer_targets {
1428: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1429: my $offloadto;
1430: if ($rule_in_effect eq 'none') {
1431: return [$perlvar{'lonHostID'}];
1432: } elsif ($rule_in_effect eq '') {
1433: $offloadto = $currtargets;
1434: } else {
1435: if ($rule_in_effect eq 'homeserver') {
1436: my $homeserver = &homeserver($uname,$udom);
1437: if ($homeserver ne 'no_host') {
1438: $offloadto = [$homeserver];
1439: }
1440: } elsif ($rule_in_effect eq 'externalbalancer') {
1441: my %domconfig =
1442: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1443: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1444: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1445: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1446: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1447: }
1448: }
1449: } else {
1450: my %servers = &internet_dom_servers($udom);
1451: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1452: if (&hostname($remotebalancer) ne '') {
1453: $offloadto = [$remotebalancer];
1454: }
1455: }
1456: } elsif (&hostname($rule_in_effect) ne '') {
1457: $offloadto = [$rule_in_effect];
1458: }
1459: }
1460: return $offloadto;
1461: }
1462:
1463: sub internet_dom_servers {
1464: my ($dom) = @_;
1465: my (%uniqservers,%servers);
1466: my $primaryserver = &hostname(&domain($dom,'primary'));
1467: my @machinedoms = &machine_domains($primaryserver);
1468: foreach my $mdom (@machinedoms) {
1469: my %currservers = %servers;
1470: my %server = &get_servers($mdom);
1471: %servers = (%currservers,%server);
1472: }
1473: my %by_hostname;
1474: foreach my $id (keys(%servers)) {
1475: push(@{$by_hostname{$servers{$id}}},$id);
1476: }
1477: foreach my $hostname (sort(keys(%by_hostname))) {
1478: if (@{$by_hostname{$hostname}} > 1) {
1479: my $match = 0;
1480: foreach my $id (@{$by_hostname{$hostname}}) {
1481: if (&host_domain($id) eq $dom) {
1482: $uniqservers{$id} = $hostname;
1483: $match = 1;
1484: }
1485: }
1486: unless ($match) {
1487: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1488: }
1489: } else {
1490: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1491: }
1492: }
1493: return %uniqservers;
1494: }
1495:
1496: # ---------------------- Find the homebase for a user from domain's lib servers
1497:
1498: my %homecache;
1499: sub homeserver {
1500: my ($uname,$udom,$ignoreBadCache)=@_;
1501: my $index="$uname:$udom";
1502:
1503: if (exists($homecache{$index})) { return $homecache{$index}; }
1504:
1505: my %servers = &get_servers($udom,'library');
1506: foreach my $tryserver (keys(%servers)) {
1507: next if ($ignoreBadCache ne 'true' &&
1508: exists($badServerCache{$tryserver}));
1509:
1510: my $answer=reply("home:$udom:$uname",$tryserver);
1511: if ($answer eq 'found') {
1512: delete($badServerCache{$tryserver});
1513: return $homecache{$index}=$tryserver;
1514: } elsif ($answer eq 'no_host') {
1515: $badServerCache{$tryserver}=1;
1516: }
1517: }
1518: return 'no_host';
1519: }
1520:
1521: # ------------------------------------- Find the usernames behind a list of IDs
1522:
1523: sub idget {
1524: my ($udom,@ids)=@_;
1525: my %returnhash=();
1526:
1527: my %servers = &get_servers($udom,'library');
1528: foreach my $tryserver (keys(%servers)) {
1529: my $idlist=join('&',@ids);
1530: $idlist=~tr/A-Z/a-z/;
1531: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1532: my @answer=();
1533: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1534: @answer=split(/\&/,$reply);
1535: } ;
1536: my $i;
1537: for ($i=0;$i<=$#ids;$i++) {
1538: if ($answer[$i]) {
1539: $returnhash{$ids[$i]}=$answer[$i];
1540: }
1541: }
1542: }
1543: return %returnhash;
1544: }
1545:
1546: # ------------------------------------- Find the IDs behind a list of usernames
1547:
1548: sub idrget {
1549: my ($udom,@unames)=@_;
1550: my %returnhash=();
1551: foreach my $uname (@unames) {
1552: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1553: }
1554: return %returnhash;
1555: }
1556:
1557: # ------------------------------- Store away a list of names and associated IDs
1558:
1559: sub idput {
1560: my ($udom,%ids)=@_;
1561: my %servers=();
1562: foreach my $uname (keys(%ids)) {
1563: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1564: my $uhom=&homeserver($uname,$udom);
1565: if ($uhom ne 'no_host') {
1566: my $id=&escape($ids{$uname});
1567: $id=~tr/A-Z/a-z/;
1568: my $esc_unam=&escape($uname);
1569: if ($servers{$uhom}) {
1570: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1571: } else {
1572: $servers{$uhom}=$id.'='.$esc_unam;
1573: }
1574: }
1575: }
1576: foreach my $server (keys(%servers)) {
1577: &critical('idput:'.$udom.':'.$servers{$server},$server);
1578: }
1579: }
1580:
1581: # ------------------------------dump from db file owned by domainconfig user
1582: sub dump_dom {
1583: my ($namespace, $udom, $regexp) = @_;
1584:
1585: $udom ||= $env{'user.domain'};
1586:
1587: return () unless $udom;
1588:
1589: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1590: }
1591:
1592: # ------------------------------------------ get items from domain db files
1593:
1594: sub get_dom {
1595: my ($namespace,$storearr,$udom,$uhome)=@_;
1596: my $items='';
1597: foreach my $item (@$storearr) {
1598: $items.=&escape($item).'&';
1599: }
1600: $items=~s/\&$//;
1601: if (!$udom) {
1602: $udom=$env{'user.domain'};
1603: if (defined(&domain($udom,'primary'))) {
1604: $uhome=&domain($udom,'primary');
1605: } else {
1606: undef($uhome);
1607: }
1608: } else {
1609: if (!$uhome) {
1610: if (defined(&domain($udom,'primary'))) {
1611: $uhome=&domain($udom,'primary');
1612: }
1613: }
1614: }
1615: if ($udom && $uhome && ($uhome ne 'no_host')) {
1616: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1617: my %returnhash;
1618: if ($rep eq '' || $rep =~ /^error: 2 /) {
1619: return %returnhash;
1620: }
1621: my @pairs=split(/\&/,$rep);
1622: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1623: return @pairs;
1624: }
1625: my $i=0;
1626: foreach my $item (@$storearr) {
1627: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1628: $i++;
1629: }
1630: return %returnhash;
1631: } else {
1632: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1633: }
1634: }
1635:
1636: # -------------------------------------------- put items in domain db files
1637:
1638: sub put_dom {
1639: my ($namespace,$storehash,$udom,$uhome)=@_;
1640: if (!$udom) {
1641: $udom=$env{'user.domain'};
1642: if (defined(&domain($udom,'primary'))) {
1643: $uhome=&domain($udom,'primary');
1644: } else {
1645: undef($uhome);
1646: }
1647: } else {
1648: if (!$uhome) {
1649: if (defined(&domain($udom,'primary'))) {
1650: $uhome=&domain($udom,'primary');
1651: }
1652: }
1653: }
1654: if ($udom && $uhome && ($uhome ne 'no_host')) {
1655: my $items='';
1656: foreach my $item (keys(%$storehash)) {
1657: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1658: }
1659: $items=~s/\&$//;
1660: return &reply("putdom:$udom:$namespace:$items",$uhome);
1661: } else {
1662: &logthis("put_dom failed - no homeserver and/or domain");
1663: }
1664: }
1665:
1666: # --------------------- newput for items in db file owned by domainconfig user
1667: sub newput_dom {
1668: my ($namespace,$storehash,$udom) = @_;
1669: my $result;
1670: if (!$udom) {
1671: $udom=$env{'user.domain'};
1672: }
1673: if ($udom) {
1674: my $uname = &get_domainconfiguser($udom);
1675: $result = &newput($namespace,$storehash,$udom,$uname);
1676: }
1677: return $result;
1678: }
1679:
1680: # --------------------- delete for items in db file owned by domainconfig user
1681: sub del_dom {
1682: my ($namespace,$storearr,$udom)=@_;
1683: if (ref($storearr) eq 'ARRAY') {
1684: if (!$udom) {
1685: $udom=$env{'user.domain'};
1686: }
1687: if ($udom) {
1688: my $uname = &get_domainconfiguser($udom);
1689: return &del($namespace,$storearr,$udom,$uname);
1690: }
1691: }
1692: }
1693:
1694: # ----------------------------------construct domainconfig user for a domain
1695: sub get_domainconfiguser {
1696: my ($udom) = @_;
1697: return $udom.'-domainconfig';
1698: }
1699:
1700: sub retrieve_inst_usertypes {
1701: my ($udom) = @_;
1702: my (%returnhash,@order);
1703: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1704: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1705: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1706: %returnhash = %{$domdefs{'inststatustypes'}};
1707: @order = @{$domdefs{'inststatusorder'}};
1708: } else {
1709: if (defined(&domain($udom,'primary'))) {
1710: my $uhome=&domain($udom,'primary');
1711: my $rep=&reply("inst_usertypes:$udom",$uhome);
1712: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1713: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1714: return (\%returnhash,\@order);
1715: }
1716: my ($hashitems,$orderitems) = split(/:/,$rep);
1717: my @pairs=split(/\&/,$hashitems);
1718: foreach my $item (@pairs) {
1719: my ($key,$value)=split(/=/,$item,2);
1720: $key = &unescape($key);
1721: next if ($key =~ /^error: 2 /);
1722: $returnhash{$key}=&thaw_unescape($value);
1723: }
1724: my @esc_order = split(/\&/,$orderitems);
1725: foreach my $item (@esc_order) {
1726: push(@order,&unescape($item));
1727: }
1728: } else {
1729: &logthis("get_dom failed - no primary domain server for $udom");
1730: }
1731: }
1732: return (\%returnhash,\@order);
1733: }
1734:
1735: sub is_domainimage {
1736: my ($url) = @_;
1737: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1738: if (&domain($1) ne '') {
1739: return '1';
1740: }
1741: }
1742: return;
1743: }
1744:
1745: sub inst_directory_query {
1746: my ($srch) = @_;
1747: my $udom = $srch->{'srchdomain'};
1748: my %results;
1749: my $homeserver = &domain($udom,'primary');
1750: my $outcome;
1751: if ($homeserver ne '') {
1752: my $queryid=&reply("querysend:instdirsearch:".
1753: &escape($srch->{'srchby'}).':'.
1754: &escape($srch->{'srchterm'}).':'.
1755: &escape($srch->{'srchtype'}),$homeserver);
1756: my $host=&hostname($homeserver);
1757: if ($queryid !~/^\Q$host\E\_/) {
1758: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1759: return;
1760: }
1761: my $response = &get_query_reply($queryid);
1762: my $maxtries = 5;
1763: my $tries = 1;
1764: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1765: $response = &get_query_reply($queryid);
1766: $tries ++;
1767: }
1768:
1769: if (!&error($response) && $response ne 'refused') {
1770: if ($response eq 'unavailable') {
1771: $outcome = $response;
1772: } else {
1773: $outcome = 'ok';
1774: my @matches = split(/\n/,$response);
1775: foreach my $match (@matches) {
1776: my ($key,$value) = split(/=/,$match);
1777: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1778: }
1779: }
1780: }
1781: }
1782: return ($outcome,%results);
1783: }
1784:
1785: sub usersearch {
1786: my ($srch) = @_;
1787: my $dom = $srch->{'srchdomain'};
1788: my %results;
1789: my %libserv = &all_library();
1790: my $query = 'usersearch';
1791: foreach my $tryserver (keys(%libserv)) {
1792: if (&host_domain($tryserver) eq $dom) {
1793: my $host=&hostname($tryserver);
1794: my $queryid=
1795: &reply("querysend:".&escape($query).':'.
1796: &escape($srch->{'srchby'}).':'.
1797: &escape($srch->{'srchtype'}).':'.
1798: &escape($srch->{'srchterm'}),$tryserver);
1799: if ($queryid !~/^\Q$host\E\_/) {
1800: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1801: next;
1802: }
1803: my $reply = &get_query_reply($queryid);
1804: my $maxtries = 1;
1805: my $tries = 1;
1806: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1807: $reply = &get_query_reply($queryid);
1808: $tries ++;
1809: }
1810: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1811: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1812: } else {
1813: my @matches;
1814: if ($reply =~ /\n/) {
1815: @matches = split(/\n/,$reply);
1816: } else {
1817: @matches = split(/\&/,$reply);
1818: }
1819: foreach my $match (@matches) {
1820: my ($uname,$udom,%userhash);
1821: foreach my $entry (split(/:/,$match)) {
1822: my ($key,$value) =
1823: map {&unescape($_);} split(/=/,$entry);
1824: $userhash{$key} = $value;
1825: if ($key eq 'username') {
1826: $uname = $value;
1827: } elsif ($key eq 'domain') {
1828: $udom = $value;
1829: }
1830: }
1831: $results{$uname.':'.$udom} = \%userhash;
1832: }
1833: }
1834: }
1835: }
1836: return %results;
1837: }
1838:
1839: sub get_instuser {
1840: my ($udom,$uname,$id) = @_;
1841: my $homeserver = &domain($udom,'primary');
1842: my ($outcome,%results);
1843: if ($homeserver ne '') {
1844: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1845: &escape($id).':'.&escape($udom),$homeserver);
1846: my $host=&hostname($homeserver);
1847: if ($queryid !~/^\Q$host\E\_/) {
1848: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1849: return;
1850: }
1851: my $response = &get_query_reply($queryid);
1852: my $maxtries = 5;
1853: my $tries = 1;
1854: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1855: $response = &get_query_reply($queryid);
1856: $tries ++;
1857: }
1858: if (!&error($response) && $response ne 'refused') {
1859: if ($response eq 'unavailable') {
1860: $outcome = $response;
1861: } else {
1862: $outcome = 'ok';
1863: my @matches = split(/\n/,$response);
1864: foreach my $match (@matches) {
1865: my ($key,$value) = split(/=/,$match);
1866: $results{&unescape($key)} = &thaw_unescape($value);
1867: }
1868: }
1869: }
1870: }
1871: my %userinfo;
1872: if (ref($results{$uname}) eq 'HASH') {
1873: %userinfo = %{$results{$uname}};
1874: }
1875: return ($outcome,%userinfo);
1876: }
1877:
1878: sub inst_rulecheck {
1879: my ($udom,$uname,$id,$item,$rules) = @_;
1880: my %returnhash;
1881: if ($udom ne '') {
1882: if (ref($rules) eq 'ARRAY') {
1883: @{$rules} = map {&escape($_);} (@{$rules});
1884: my $rulestr = join(':',@{$rules});
1885: my $homeserver=&domain($udom,'primary');
1886: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1887: my $response;
1888: if ($item eq 'username') {
1889: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1890: ':'.&escape($uname).':'.$rulestr,
1891: $homeserver));
1892: } elsif ($item eq 'id') {
1893: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1894: ':'.&escape($id).':'.$rulestr,
1895: $homeserver));
1896: } elsif ($item eq 'selfcreate') {
1897: $response=&unescape(&reply('instselfcreatecheck:'.
1898: &escape($udom).':'.&escape($uname).
1899: ':'.$rulestr,$homeserver));
1900: }
1901: if ($response ne 'refused') {
1902: my @pairs=split(/\&/,$response);
1903: foreach my $item (@pairs) {
1904: my ($key,$value)=split(/=/,$item,2);
1905: $key = &unescape($key);
1906: next if ($key =~ /^error: 2 /);
1907: $returnhash{$key}=&thaw_unescape($value);
1908: }
1909: }
1910: }
1911: }
1912: }
1913: return %returnhash;
1914: }
1915:
1916: sub inst_userrules {
1917: my ($udom,$check) = @_;
1918: my (%ruleshash,@ruleorder);
1919: if ($udom ne '') {
1920: my $homeserver=&domain($udom,'primary');
1921: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1922: my $response;
1923: if ($check eq 'id') {
1924: $response=&reply('instidrules:'.&escape($udom),
1925: $homeserver);
1926: } elsif ($check eq 'email') {
1927: $response=&reply('instemailrules:'.&escape($udom),
1928: $homeserver);
1929: } else {
1930: $response=&reply('instuserrules:'.&escape($udom),
1931: $homeserver);
1932: }
1933: if (($response ne 'refused') && ($response ne 'error') &&
1934: ($response ne 'unknown_cmd') &&
1935: ($response ne 'no_such_host')) {
1936: my ($hashitems,$orderitems) = split(/:/,$response);
1937: my @pairs=split(/\&/,$hashitems);
1938: foreach my $item (@pairs) {
1939: my ($key,$value)=split(/=/,$item,2);
1940: $key = &unescape($key);
1941: next if ($key =~ /^error: 2 /);
1942: $ruleshash{$key}=&thaw_unescape($value);
1943: }
1944: my @esc_order = split(/\&/,$orderitems);
1945: foreach my $item (@esc_order) {
1946: push(@ruleorder,&unescape($item));
1947: }
1948: }
1949: }
1950: }
1951: return (\%ruleshash,\@ruleorder);
1952: }
1953:
1954: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1955:
1956: sub get_domain_defaults {
1957: my ($domain) = @_;
1958: my $cachetime = 60*60*24;
1959: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1960: if (defined($cached)) {
1961: if (ref($result) eq 'HASH') {
1962: return %{$result};
1963: }
1964: }
1965: my %domdefaults;
1966: my %domconfig =
1967: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1968: 'requestcourses','inststatus',
1969: 'coursedefaults','usersessions',
1970: 'requestauthor'],$domain);
1971: if (ref($domconfig{'defaults'}) eq 'HASH') {
1972: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1973: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1974: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1975: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1976: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1977: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1978: } else {
1979: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1980: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1981: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1982: }
1983: if (ref($domconfig{'quotas'}) eq 'HASH') {
1984: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1985: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1986: } else {
1987: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1988: }
1989: my @usertools = ('aboutme','blog','webdav','portfolio');
1990: foreach my $item (@usertools) {
1991: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1992: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1993: }
1994: }
1995: }
1996: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1997: foreach my $item ('official','unofficial','community') {
1998: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1999: }
2000: }
2001: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2002: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2003: }
2004: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2005: foreach my $item ('inststatustypes','inststatusorder') {
2006: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2007: }
2008: }
2009: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2010: foreach my $item ('canuse_pdfforms') {
2011: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
2012: }
2013: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2014: $domdefaults{'officialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'official'};
2015: $domdefaults{'unofficialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'unofficial'};
2016: }
2017: }
2018: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2019: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2020: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2021: }
2022: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2023: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2024: }
2025: }
2026: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
2027: $cachetime);
2028: return %domdefaults;
2029: }
2030:
2031: # --------------------------------------------------- Assign a key to a student
2032:
2033: sub assign_access_key {
2034: #
2035: # a valid key looks like uname:udom#comments
2036: # comments are being appended
2037: #
2038: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2039: $kdom=
2040: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2041: $knum=
2042: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2043: $cdom=
2044: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2045: $cnum=
2046: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2047: $udom=$env{'user.name'} unless (defined($udom));
2048: $uname=$env{'user.domain'} unless (defined($uname));
2049: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2050: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2051: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2052: # assigned to this person
2053: # - this should not happen,
2054: # unless something went wrong
2055: # the first time around
2056: # ready to assign
2057: $logentry=$1.'; '.$logentry;
2058: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2059: $kdom,$knum) eq 'ok') {
2060: # key now belongs to user
2061: my $envkey='key.'.$cdom.'_'.$cnum;
2062: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2063: &appenv({'environment.'.$envkey => $ckey});
2064: return 'ok';
2065: } else {
2066: return
2067: 'error: Count not permanently assign key, will need to be re-entered later.';
2068: }
2069: } else {
2070: return 'error: Could not assign key, try again later.';
2071: }
2072: } elsif (!$existing{$ckey}) {
2073: # the key does not exist
2074: return 'error: The key does not exist';
2075: } else {
2076: # the key is somebody else's
2077: return 'error: The key is already in use';
2078: }
2079: }
2080:
2081: # ------------------------------------------ put an additional comment on a key
2082:
2083: sub comment_access_key {
2084: #
2085: # a valid key looks like uname:udom#comments
2086: # comments are being appended
2087: #
2088: my ($ckey,$cdom,$cnum,$logentry)=@_;
2089: $cdom=
2090: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2091: $cnum=
2092: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2093: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2094: if ($existing{$ckey}) {
2095: $existing{$ckey}.='; '.$logentry;
2096: # ready to assign
2097: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2098: $cdom,$cnum) eq 'ok') {
2099: return 'ok';
2100: } else {
2101: return 'error: Count not store comment.';
2102: }
2103: } else {
2104: # the key does not exist
2105: return 'error: The key does not exist';
2106: }
2107: }
2108:
2109: # ------------------------------------------------------ Generate a set of keys
2110:
2111: sub generate_access_keys {
2112: my ($number,$cdom,$cnum,$logentry)=@_;
2113: $cdom=
2114: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2115: $cnum=
2116: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2117: unless (&allowed('mky',$cdom)) { return 0; }
2118: unless (($cdom) && ($cnum)) { return 0; }
2119: if ($number>10000) { return 0; }
2120: sleep(2); # make sure don't get same seed twice
2121: srand(time()^($$+($$<<15))); # from "Programming Perl"
2122: my $total=0;
2123: for (my $i=1;$i<=$number;$i++) {
2124: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2125: sprintf("%lx",int(100000*rand)).'-'.
2126: sprintf("%lx",int(100000*rand));
2127: $newkey=~s/1/g/g; # folks mix up 1 and l
2128: $newkey=~s/0/h/g; # and also 0 and O
2129: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2130: if ($existing{$newkey}) {
2131: $i--;
2132: } else {
2133: if (&put('accesskeys',
2134: { $newkey => '# generated '.localtime().
2135: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2136: '; '.$logentry },
2137: $cdom,$cnum) eq 'ok') {
2138: $total++;
2139: }
2140: }
2141: }
2142: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2143: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2144: return $total;
2145: }
2146:
2147: # ------------------------------------------------------- Validate an accesskey
2148:
2149: sub validate_access_key {
2150: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2151: $cdom=
2152: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2153: $cnum=
2154: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2155: $udom=$env{'user.domain'} unless (defined($udom));
2156: $uname=$env{'user.name'} unless (defined($uname));
2157: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2158: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2159: }
2160:
2161: # ------------------------------------- Find the section of student in a course
2162: sub devalidate_getsection_cache {
2163: my ($udom,$unam,$courseid)=@_;
2164: my $hashid="$udom:$unam:$courseid";
2165: &devalidate_cache_new('getsection',$hashid);
2166: }
2167:
2168: sub courseid_to_courseurl {
2169: my ($courseid) = @_;
2170: #already url style courseid
2171: return $courseid if ($courseid =~ m{^/});
2172:
2173: if (exists($env{'course.'.$courseid.'.num'})) {
2174: my $cnum = $env{'course.'.$courseid.'.num'};
2175: my $cdom = $env{'course.'.$courseid.'.domain'};
2176: return "/$cdom/$cnum";
2177: }
2178:
2179: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2180: if (exists($courseinfo{'num'})) {
2181: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2182: }
2183:
2184: return undef;
2185: }
2186:
2187: sub getsection {
2188: my ($udom,$unam,$courseid)=@_;
2189: my $cachetime=1800;
2190:
2191: my $hashid="$udom:$unam:$courseid";
2192: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2193: if (defined($cached)) { return $result; }
2194:
2195: my %Pending;
2196: my %Expired;
2197: #
2198: # Each role can either have not started yet (pending), be active,
2199: # or have expired.
2200: #
2201: # If there is an active role, we are done.
2202: #
2203: # If there is more than one role which has not started yet,
2204: # choose the one which will start sooner
2205: # If there is one role which has not started yet, return it.
2206: #
2207: # If there is more than one expired role, choose the one which ended last.
2208: # If there is a role which has expired, return it.
2209: #
2210: $courseid = &courseid_to_courseurl($courseid);
2211: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2212: foreach my $key (keys(%roleshash)) {
2213: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2214: my $section=$1;
2215: if ($key eq $courseid.'_st') { $section=''; }
2216: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2217: my $now=time;
2218: if (defined($end) && $end && ($now > $end)) {
2219: $Expired{$end}=$section;
2220: next;
2221: }
2222: if (defined($start) && $start && ($now < $start)) {
2223: $Pending{$start}=$section;
2224: next;
2225: }
2226: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2227: }
2228: #
2229: # Presumedly there will be few matching roles from the above
2230: # loop and the sorting time will be negligible.
2231: if (scalar(keys(%Pending))) {
2232: my ($time) = sort {$a <=> $b} keys(%Pending);
2233: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2234: }
2235: if (scalar(keys(%Expired))) {
2236: my @sorted = sort {$a <=> $b} keys(%Expired);
2237: my $time = pop(@sorted);
2238: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2239: }
2240: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2241: }
2242:
2243: sub save_cache {
2244: &purge_remembered();
2245: #&Apache::loncommon::validate_page();
2246: undef(%env);
2247: undef($env_loaded);
2248: }
2249:
2250: my $to_remember=-1;
2251: my %remembered;
2252: my %accessed;
2253: my $kicks=0;
2254: my $hits=0;
2255: sub make_key {
2256: my ($name,$id) = @_;
2257: if (length($id) > 65
2258: && length(&escape($id)) > 200) {
2259: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2260: }
2261: return &escape($name.':'.$id);
2262: }
2263:
2264: sub devalidate_cache_new {
2265: my ($name,$id,$debug) = @_;
2266: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2267: $id=&make_key($name,$id);
2268: $memcache->delete($id);
2269: delete($remembered{$id});
2270: delete($accessed{$id});
2271: }
2272:
2273: sub is_cached_new {
2274: my ($name,$id,$debug) = @_;
2275: $id=&make_key($name,$id);
2276: if (exists($remembered{$id})) {
2277: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2278: $accessed{$id}=[&gettimeofday()];
2279: $hits++;
2280: return ($remembered{$id},1);
2281: }
2282: my $value = $memcache->get($id);
2283: if (!(defined($value))) {
2284: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2285: return (undef,undef);
2286: }
2287: if ($value eq '__undef__') {
2288: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2289: $value=undef;
2290: }
2291: &make_room($id,$value,$debug);
2292: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2293: return ($value,1);
2294: }
2295:
2296: sub do_cache_new {
2297: my ($name,$id,$value,$time,$debug) = @_;
2298: $id=&make_key($name,$id);
2299: my $setvalue=$value;
2300: if (!defined($setvalue)) {
2301: $setvalue='__undef__';
2302: }
2303: if (!defined($time) ) {
2304: $time=600;
2305: }
2306: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2307: my $result = $memcache->set($id,$setvalue,$time);
2308: if (! $result) {
2309: &logthis("caching of id -> $id failed");
2310: $memcache->disconnect_all();
2311: }
2312: # need to make a copy of $value
2313: &make_room($id,$value,$debug);
2314: return $value;
2315: }
2316:
2317: sub make_room {
2318: my ($id,$value,$debug)=@_;
2319:
2320: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2321: : $value;
2322: if ($to_remember<0) { return; }
2323: $accessed{$id}=[&gettimeofday()];
2324: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2325: my $to_kick;
2326: my $max_time=0;
2327: foreach my $other (keys(%accessed)) {
2328: if (&tv_interval($accessed{$other}) > $max_time) {
2329: $to_kick=$other;
2330: $max_time=&tv_interval($accessed{$other});
2331: }
2332: }
2333: delete($remembered{$to_kick});
2334: delete($accessed{$to_kick});
2335: $kicks++;
2336: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2337: return;
2338: }
2339:
2340: sub purge_remembered {
2341: #&logthis("Tossing ".scalar(keys(%remembered)));
2342: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2343: undef(%remembered);
2344: undef(%accessed);
2345: }
2346: # ------------------------------------- Read an entry from a user's environment
2347:
2348: sub userenvironment {
2349: my ($udom,$unam,@what)=@_;
2350: my $items;
2351: foreach my $item (@what) {
2352: $items.=&escape($item).'&';
2353: }
2354: $items=~s/\&$//;
2355: my %returnhash=();
2356: my $uhome = &homeserver($unam,$udom);
2357: unless ($uhome eq 'no_host') {
2358: my @answer=split(/\&/,
2359: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2360: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2361: return %returnhash;
2362: }
2363: my $i;
2364: for ($i=0;$i<=$#what;$i++) {
2365: $returnhash{$what[$i]}=&unescape($answer[$i]);
2366: }
2367: }
2368: return %returnhash;
2369: }
2370:
2371: # ---------------------------------------------------------- Get a studentphoto
2372: sub studentphoto {
2373: my ($udom,$unam,$ext) = @_;
2374: my $home=&Apache::lonnet::homeserver($unam,$udom);
2375: if (defined($env{'request.course.id'})) {
2376: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2377: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2378: return(&retrievestudentphoto($udom,$unam,$ext));
2379: } else {
2380: my ($result,$perm_reqd)=
2381: &Apache::lonnet::auto_photo_permission($unam,$udom);
2382: if ($result eq 'ok') {
2383: if (!($perm_reqd eq 'yes')) {
2384: return(&retrievestudentphoto($udom,$unam,$ext));
2385: }
2386: }
2387: }
2388: }
2389: } else {
2390: my ($result,$perm_reqd) =
2391: &Apache::lonnet::auto_photo_permission($unam,$udom);
2392: if ($result eq 'ok') {
2393: if (!($perm_reqd eq 'yes')) {
2394: return(&retrievestudentphoto($udom,$unam,$ext));
2395: }
2396: }
2397: }
2398: return '/adm/lonKaputt/lonlogo_broken.gif';
2399: }
2400:
2401: sub retrievestudentphoto {
2402: my ($udom,$unam,$ext,$type) = @_;
2403: my $home=&Apache::lonnet::homeserver($unam,$udom);
2404: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2405: if ($ret eq 'ok') {
2406: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2407: if ($type eq 'thumbnail') {
2408: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2409: }
2410: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2411: return $tokenurl;
2412: } else {
2413: if ($type eq 'thumbnail') {
2414: return '/adm/lonKaputt/genericstudent_tn.gif';
2415: } else {
2416: return '/adm/lonKaputt/lonlogo_broken.gif';
2417: }
2418: }
2419: }
2420:
2421: # -------------------------------------------------------------------- New chat
2422:
2423: sub chatsend {
2424: my ($newentry,$anon,$group)=@_;
2425: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2426: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2427: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2428: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2429: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2430: &escape($newentry)).':'.$group,$chome);
2431: }
2432:
2433: # ------------------------------------------ Find current version of a resource
2434:
2435: sub getversion {
2436: my $fname=&clutter(shift);
2437: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2438: return ¤tversion(&filelocation('',$fname));
2439: }
2440:
2441: sub currentversion {
2442: my $fname=shift;
2443: my $author=$fname;
2444: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2445: my ($udom,$uname)=split(/\//,$author);
2446: my $home=&homeserver($uname,$udom);
2447: if ($home eq 'no_host') {
2448: return -1;
2449: }
2450: my $answer=&reply("currentversion:$fname",$home);
2451: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2452: return -1;
2453: }
2454: return $answer;
2455: }
2456:
2457: #
2458: # Return special version number of resource if set by override, empty otherwise
2459: #
2460: sub usedversion {
2461: my $fname=shift;
2462: unless ($fname) { $fname=$env{'request.uri'}; }
2463: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2464: if ($urlversion) { return $urlversion; }
2465: return '';
2466: }
2467:
2468: # ----------------------------- Subscribe to a resource, return URL if possible
2469:
2470: sub subscribe {
2471: my $fname=shift;
2472: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2473: $fname=~s/[\n\r]//g;
2474: my $author=$fname;
2475: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2476: my ($udom,$uname)=split(/\//,$author);
2477: my $home=homeserver($uname,$udom);
2478: if ($home eq 'no_host') {
2479: return 'not_found';
2480: }
2481: my $answer=reply("sub:$fname",$home);
2482: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2483: $answer.=' by '.$home;
2484: }
2485: return $answer;
2486: }
2487:
2488: # -------------------------------------------------------------- Replicate file
2489:
2490: sub repcopy {
2491: my $filename=shift;
2492: $filename=~s/\/+/\//g;
2493: my $londocroot = $perlvar{'lonDocRoot'};
2494: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2495: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2496: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2497: $filename=~m{^/*(uploaded|editupload)/}) {
2498: return &repcopy_userfile($filename);
2499: }
2500: $filename=~s/[\n\r]//g;
2501: my $transname="$filename.in.transfer";
2502: # FIXME: this should flock
2503: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2504: my $remoteurl=subscribe($filename);
2505: if ($remoteurl =~ /^con_lost by/) {
2506: &logthis("Subscribe returned $remoteurl: $filename");
2507: return 'unavailable';
2508: } elsif ($remoteurl eq 'not_found') {
2509: #&logthis("Subscribe returned not_found: $filename");
2510: return 'not_found';
2511: } elsif ($remoteurl =~ /^rejected by/) {
2512: &logthis("Subscribe returned $remoteurl: $filename");
2513: return 'forbidden';
2514: } elsif ($remoteurl eq 'directory') {
2515: return 'ok';
2516: } else {
2517: my $author=$filename;
2518: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2519: my ($udom,$uname)=split(/\//,$author);
2520: my $home=homeserver($uname,$udom);
2521: unless ($home eq $perlvar{'lonHostID'}) {
2522: my @parts=split(/\//,$filename);
2523: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2524: if ($path ne "$londocroot/res") {
2525: &logthis("Malconfiguration for replication: $filename");
2526: return 'bad_request';
2527: }
2528: my $count;
2529: for ($count=5;$count<$#parts;$count++) {
2530: $path.="/$parts[$count]";
2531: if ((-e $path)!=1) {
2532: mkdir($path,0777);
2533: }
2534: }
2535: my $ua=new LWP::UserAgent;
2536: my $request=new HTTP::Request('GET',"$remoteurl");
2537: my $response=$ua->request($request,$transname);
2538: if ($response->is_error()) {
2539: unlink($transname);
2540: my $message=$response->status_line;
2541: &logthis("<font color=\"blue\">WARNING:"
2542: ." LWP get: $message: $filename</font>");
2543: return 'unavailable';
2544: } else {
2545: if ($remoteurl!~/\.meta$/) {
2546: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2547: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2548: if ($mresponse->is_error()) {
2549: unlink($filename.'.meta');
2550: &logthis(
2551: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2552: }
2553: }
2554: rename($transname,$filename);
2555: return 'ok';
2556: }
2557: }
2558: }
2559: }
2560:
2561: # ------------------------------------------------ Get server side include body
2562: sub ssi_body {
2563: my ($filelink,%form)=@_;
2564: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2565: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2566: }
2567: my $output='';
2568: my $response;
2569: if ($filelink=~/^https?\:/) {
2570: ($output,$response)=&externalssi($filelink);
2571: } else {
2572: $filelink .= $filelink=~/\?/ ? '&' : '?';
2573: $filelink .= 'inhibitmenu=yes';
2574: ($output,$response)=&ssi($filelink,%form);
2575: }
2576: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2577: $output=~s/^.*?\<body[^\>]*\>//si;
2578: $output=~s/\<\/body\s*\>.*?$//si;
2579: if (wantarray) {
2580: return ($output, $response);
2581: } else {
2582: return $output;
2583: }
2584: }
2585:
2586: # --------------------------------------------------------- Server Side Include
2587:
2588: sub absolute_url {
2589: my ($host_name) = @_;
2590: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2591: if ($host_name eq '') {
2592: $host_name = $ENV{'SERVER_NAME'};
2593: }
2594: return $protocol.$host_name;
2595: }
2596:
2597: #
2598: # Server side include.
2599: # Parameters:
2600: # fn Possibly encrypted resource name/id.
2601: # form Hash that describes how the rendering should be done
2602: # and other things.
2603: # Returns:
2604: # Scalar context: The content of the response.
2605: # Array context: 2 element list of the content and the full response object.
2606: #
2607: sub ssi {
2608:
2609: my ($fn,%form)=@_;
2610: my $ua=new LWP::UserAgent;
2611: my $request;
2612:
2613: $form{'no_update_last_known'}=1;
2614: &Apache::lonenc::check_encrypt(\$fn);
2615: if (%form) {
2616: $request=new HTTP::Request('POST',&absolute_url().$fn);
2617: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2618: } else {
2619: $request=new HTTP::Request('GET',&absolute_url().$fn);
2620: }
2621:
2622: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2623: my $response= $ua->request($request);
2624: my $content = $response->content;
2625:
2626:
2627: if (wantarray) {
2628: return ($content, $response);
2629: } else {
2630: return $content;
2631: }
2632: }
2633:
2634: sub externalssi {
2635: my ($url)=@_;
2636: my $ua=new LWP::UserAgent;
2637: my $request=new HTTP::Request('GET',$url);
2638: my $response=$ua->request($request);
2639: if (wantarray) {
2640: return ($response->content, $response);
2641: } else {
2642: return $response->content;
2643: }
2644: }
2645:
2646: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2647:
2648: sub allowuploaded {
2649: my ($srcurl,$url)=@_;
2650: $url=&clutter(&declutter($url));
2651: my $dir=$url;
2652: $dir=~s/\/[^\/]+$//;
2653: my %httpref=();
2654: my $httpurl=&hreflocation('',$url);
2655: $httpref{'httpref.'.$httpurl}=$srcurl;
2656: &Apache::lonnet::appenv(\%httpref);
2657: }
2658:
2659: #
2660: # Determine if the current user should be able to edit a particular resource,
2661: # when viewing in course context.
2662: # (a) When viewing resource used to determine if "Edit" item is included in
2663: # Functions.
2664: # (b) When displaying folder contents in course editor, used to determine if
2665: # "Edit" link will be displayed alongside resource.
2666: #
2667: # input: six args -- filename (decluttered), course number, course domain,
2668: # url, symb (if registered) and group (if this is a group
2669: # item -- e.g., bulletin board, group page etc.).
2670: # output: array of five scalars --
2671: # $cfile -- url for file editing if editable on current server
2672: # $home -- homeserver of resource (i.e., for author if published,
2673: # or course if uploaded.).
2674: # $switchserver -- 1 if server switch will be needed.
2675: # $forceedit -- 1 if icon/link should be to go to edit mode
2676: # $forceview -- 1 if icon/link should be to go to view mode
2677: #
2678:
2679: sub can_edit_resource {
2680: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2681: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2682: #
2683: # For aboutme pages user can only edit his/her own.
2684: #
2685: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2686: my ($sdom,$sname) = ($1,$2);
2687: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2688: $home = $env{'user.home'};
2689: $cfile = $resurl;
2690: if ($env{'form.forceedit'}) {
2691: $forceview = 1;
2692: } else {
2693: $forceedit = 1;
2694: }
2695: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2696: } else {
2697: return;
2698: }
2699: }
2700:
2701: if ($env{'request.course.id'}) {
2702: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2703: if ($group ne '') {
2704: # if this is a group homepage or group bulletin board, check group privs
2705: my $allowed = 0;
2706: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2707: if ((&allowed('mdg',$env{'request.course.id'}.
2708: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2709: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2710: $allowed = 1;
2711: }
2712: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2713: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2714: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2715: $allowed = 1;
2716: }
2717: }
2718: if ($allowed) {
2719: $home=&homeserver($cnum,$cdom);
2720: if ($env{'form.forceedit'}) {
2721: $forceview = 1;
2722: } else {
2723: $forceedit = 1;
2724: }
2725: $cfile = $resurl;
2726: } else {
2727: return;
2728: }
2729: } else {
2730: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2731: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2732: return;
2733: }
2734: } elsif (!$crsedit) {
2735: #
2736: # No edit allowed where CC has switched to student role.
2737: #
2738: return;
2739: }
2740: }
2741: }
2742:
2743: if ($file ne '') {
2744: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2745: if (&is_course_upload($file,$cnum,$cdom)) {
2746: $uploaded = 1;
2747: $incourse = 1;
2748: if ($file =~/\.(htm|html|css|js|txt)$/) {
2749: $cfile = &hreflocation('',$file);
2750: if ($env{'form.forceedit'}) {
2751: $forceview = 1;
2752: } else {
2753: $forceedit = 1;
2754: }
2755: }
2756: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2757: $incourse = 1;
2758: if ($env{'form.forceedit'}) {
2759: $forceview = 1;
2760: } else {
2761: $forceedit = 1;
2762: }
2763: $cfile = $resurl;
2764: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2765: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2766: $incourse = 1;
2767: if ($env{'form.forceedit'}) {
2768: $forceview = 1;
2769: } else {
2770: $forceedit = 1;
2771: }
2772: $cfile = $resurl;
2773: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2774: $incourse = 1;
2775: $cfile = $resurl.'/smpedit';
2776: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2777: $incourse = 1;
2778: if ($env{'form.forceedit'}) {
2779: $forceview = 1;
2780: } else {
2781: $forceedit = 1;
2782: }
2783: $cfile = $resurl;
2784: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2785: $incourse = 1;
2786: if ($env{'form.forceedit'}) {
2787: $forceview = 1;
2788: } else {
2789: $forceedit = 1;
2790: }
2791: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2792: }
2793: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2794: my $template = '/res/lib/templates/simpleproblem.problem';
2795: if (&is_on_map($template)) {
2796: $incourse = 1;
2797: $forceview = 1;
2798: $cfile = $template;
2799: }
2800: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2801: $incourse = 1;
2802: if ($env{'form.forceedit'}) {
2803: $forceview = 1;
2804: } else {
2805: $forceedit = 1;
2806: }
2807: $cfile = $resurl;
2808: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2809: $incourse = 1;
2810: $forceview = 1;
2811: if ($symb) {
2812: my ($map,$id,$res)=&decode_symb($symb);
2813: $env{'request.symb'} = $symb;
2814: $cfile = &clutter($res);
2815: } else {
2816: $cfile = $env{'form.suppurl'};
2817: $cfile =~ s{^http://}{};
2818: $cfile = '/adm/wrapper/ext/'.$cfile;
2819: }
2820: }
2821: }
2822: if ($uploaded || $incourse) {
2823: $home=&homeserver($cnum,$cdom);
2824: } elsif ($file !~ m{/$}) {
2825: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2826: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2827: # Check that the user has permission to edit this resource
2828: my $setpriv = 1;
2829: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2830: if (defined($cfudom)) {
2831: $home=&homeserver($cfuname,$cfudom);
2832: $cfile=$file;
2833: }
2834: }
2835: if (($cfile ne '') && (!$incourse || $uploaded) &&
2836: (($home ne '') && ($home ne 'no_host'))) {
2837: my @ids=¤t_machine_ids();
2838: unless (grep(/^\Q$home\E$/,@ids)) {
2839: $switchserver=1;
2840: }
2841: }
2842: }
2843: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2844: }
2845:
2846: sub is_course_upload {
2847: my ($file,$cnum,$cdom) = @_;
2848: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2849: $uploadpath =~ s{^\/}{};
2850: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
2851: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
2852: return 1;
2853: }
2854: return;
2855: }
2856:
2857: sub in_course {
2858: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2859: if ($hideprivileged) {
2860: my $skipuser;
2861: if (&privileged($uname,$udom)) {
2862: $skipuser = 1;
2863: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2864: if ($coursehash{'nothideprivileged'}) {
2865: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2866: my $user;
2867: if ($item =~ /:/) {
2868: $user = $item;
2869: } else {
2870: $user = join(':',split(/[\@]/,$item));
2871: }
2872: if ($user eq $uname.':'.$udom) {
2873: undef($skipuser);
2874: last;
2875: }
2876: }
2877: }
2878: if ($skipuser) {
2879: return 0;
2880: }
2881: }
2882: }
2883: $type ||= 'any';
2884: if (!defined($cdom) || !defined($cnum)) {
2885: my $cid = $env{'request.course.id'};
2886: $cdom = $env{'course.'.$cid.'.domain'};
2887: $cnum = $env{'course.'.$cid.'.num'};
2888: }
2889: my $typesref;
2890: if (($type eq 'any') || ($type eq 'all')) {
2891: $typesref = ['active','previous','future'];
2892: } elsif ($type eq 'previous' || $type eq 'future') {
2893: $typesref = [$type];
2894: }
2895: my %roles = &get_my_roles($uname,$udom,'userroles',
2896: $typesref,undef,[$cdom]);
2897: my ($tmp) = keys(%roles);
2898: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
2899: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
2900: if (@course_roles > 0) {
2901: return 1;
2902: }
2903: return 0;
2904: }
2905:
2906: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2907: # input: action, courseID, current domain, intended
2908: # path to file, source of file, instruction to parse file for objects,
2909: # ref to hash for embedded objects,
2910: # ref to hash for codebase of java objects.
2911: # reference to scalar to accommodate mime type determined
2912: # from File::MMagic if $parser = parse.
2913: #
2914: # output: url to file (if action was uploaddoc),
2915: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2916: #
2917: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2918: # course.
2919: #
2920: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2921: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2922: # course's home server.
2923: #
2924: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2925: # be copied from $source (current location) to
2926: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2927: # and will then be copied to
2928: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2929: # course's home server.
2930: #
2931: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2932: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2933: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2934: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2935: # in course's home server.
2936: #
2937:
2938: sub process_coursefile {
2939: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2940: $mimetype)=@_;
2941: my $fetchresult;
2942: my $home=&homeserver($docuname,$docudom);
2943: if ($action eq 'propagate') {
2944: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2945: $home);
2946: } else {
2947: my $fpath = '';
2948: my $fname = $file;
2949: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2950: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2951: my $filepath = &build_filepath($fpath);
2952: if ($action eq 'copy') {
2953: if ($source eq '') {
2954: $fetchresult = 'no source file';
2955: return $fetchresult;
2956: } else {
2957: my $destination = $filepath.'/'.$fname;
2958: rename($source,$destination);
2959: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2960: $home);
2961: }
2962: } elsif ($action eq 'uploaddoc') {
2963: open(my $fh,'>'.$filepath.'/'.$fname);
2964: print $fh $env{'form.'.$source};
2965: close($fh);
2966: if ($parser eq 'parse') {
2967: my $mm = new File::MMagic;
2968: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2969: if ($type eq 'text/html') {
2970: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2971: unless ($parse_result eq 'ok') {
2972: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2973: }
2974: }
2975: if (ref($mimetype)) {
2976: $$mimetype = $type;
2977: }
2978: }
2979: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2980: $home);
2981: if ($fetchresult eq 'ok') {
2982: return '/uploaded/'.$fpath.'/'.$fname;
2983: } else {
2984: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2985: ' to host '.$home.': '.$fetchresult);
2986: return '/adm/notfound.html';
2987: }
2988: }
2989: }
2990: unless ( $fetchresult eq 'ok') {
2991: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2992: ' to host '.$home.': '.$fetchresult);
2993: }
2994: return $fetchresult;
2995: }
2996:
2997: sub build_filepath {
2998: my ($fpath) = @_;
2999: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3000: unless ($fpath eq '') {
3001: my @parts=split('/',$fpath);
3002: foreach my $part (@parts) {
3003: $filepath.= '/'.$part;
3004: if ((-e $filepath)!=1) {
3005: mkdir($filepath,0777);
3006: }
3007: }
3008: }
3009: return $filepath;
3010: }
3011:
3012: sub store_edited_file {
3013: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3014: my $file = $primary_url;
3015: $file =~ s#^/uploaded/$docudom/$docuname/##;
3016: my $fpath = '';
3017: my $fname = $file;
3018: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3019: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3020: my $filepath = &build_filepath($fpath);
3021: open(my $fh,'>'.$filepath.'/'.$fname);
3022: print $fh $content;
3023: close($fh);
3024: my $home=&homeserver($docuname,$docudom);
3025: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3026: $home);
3027: if ($$fetchresult eq 'ok') {
3028: return '/uploaded/'.$fpath.'/'.$fname;
3029: } else {
3030: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3031: ' to host '.$home.': '.$$fetchresult);
3032: return '/adm/notfound.html';
3033: }
3034: }
3035:
3036: sub clean_filename {
3037: my ($fname,$args)=@_;
3038: # Replace Windows backslashes by forward slashes
3039: $fname=~s/\\/\//g;
3040: if (!$args->{'keep_path'}) {
3041: # Get rid of everything but the actual filename
3042: $fname=~s/^.*\/([^\/]+)$/$1/;
3043: }
3044: # Replace spaces by underscores
3045: $fname=~s/\s+/\_/g;
3046: # Replace all other weird characters by nothing
3047: $fname=~s{[^/\w\.\-]}{}g;
3048: # Replace all .\d. sequences with _\d. so they no longer look like version
3049: # numbers
3050: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3051: return $fname;
3052: }
3053: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3054: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3055: # image with the same aspect ratio as the original, but with dimensions which do
3056: # not exceed $resizewidth and $resizeheight.
3057:
3058: sub resizeImage {
3059: my ($img_path,$resizewidth,$resizeheight) = @_;
3060: my $ima = Image::Magick->new;
3061: my $resized;
3062: if (-e $img_path) {
3063: $ima->Read($img_path);
3064: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3065: my $width = $ima->Get('width');
3066: my $height = $ima->Get('height');
3067: if ($width > $resizewidth) {
3068: my $factor = $width/$resizewidth;
3069: my $newheight = $height/$factor;
3070: $ima->Scale(width=>$resizewidth,height=>$newheight);
3071: $resized = 1;
3072: }
3073: }
3074: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3075: my $width = $ima->Get('width');
3076: my $height = $ima->Get('height');
3077: if ($height > $resizeheight) {
3078: my $factor = $height/$resizeheight;
3079: my $newwidth = $width/$factor;
3080: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3081: $resized = 1;
3082: }
3083: }
3084: if ($resized) {
3085: $ima->Write($img_path);
3086: }
3087: }
3088: return;
3089: }
3090:
3091: # --------------- Take an uploaded file and put it into the userfiles directory
3092: # input: $formname - the contents of the file are in $env{"form.$formname"}
3093: # the desired filename is in $env{"form.$formname.filename"}
3094: # $context - possible values: coursedoc, existingfile, overwrite,
3095: # canceloverwrite, or ''.
3096: # if 'coursedoc': upload to the current course
3097: # if 'existingfile': write file to tmp/overwrites directory
3098: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3099: # $context is passed as argument to &finishuserfileupload
3100: # $subdir - directory in userfile to store the file into
3101: # $parser - instruction to parse file for objects ($parser = parse)
3102: # $allfiles - reference to hash for embedded objects
3103: # $codebase - reference to hash for codebase of java objects
3104: # $desuname - username for permanent storage of uploaded file
3105: # $dsetudom - domain for permanaent storage of uploaded file
3106: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3107: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3108: # $resizewidth - width (pixels) to which to resize uploaded image
3109: # $resizeheight - height (pixels) to which to resize uploaded image
3110: # $mimetype - reference to scalar to accommodate mime type determined
3111: # from File::MMagic.
3112: #
3113: # output: url of file in userspace, or error: <message>
3114: # or /adm/notfound.html if failure to upload occurse
3115:
3116: sub userfileupload {
3117: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3118: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3119: if (!defined($subdir)) { $subdir='unknown'; }
3120: my $fname=$env{'form.'.$formname.'.filename'};
3121: $fname=&clean_filename($fname);
3122: # See if there is anything left
3123: unless ($fname) { return 'error: no uploaded file'; }
3124: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3125: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3126: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3127: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3128: my $now = time;
3129: my $filepath;
3130: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3131: $filepath = 'tmp/helprequests/'.$now;
3132: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3133: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3134: '_'.$env{'user.domain'}.'/pending';
3135: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3136: my ($docuname,$docudom);
3137: if ($destudom) {
3138: $docudom = $destudom;
3139: } else {
3140: $docudom = $env{'user.domain'};
3141: }
3142: if ($destuname) {
3143: $docuname = $destuname;
3144: } else {
3145: $docuname = $env{'user.name'};
3146: }
3147: if (exists($env{'form.group'})) {
3148: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3149: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3150: }
3151: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3152: if ($context eq 'canceloverwrite') {
3153: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3154: if (-e $tempfile) {
3155: my @info = stat($tempfile);
3156: if ($info[9] eq $env{'form.timestamp'}) {
3157: unlink($tempfile);
3158: }
3159: }
3160: return;
3161: }
3162: }
3163: # Create the directory if not present
3164: my @parts=split(/\//,$filepath);
3165: my $fullpath = $perlvar{'lonDaemons'};
3166: for (my $i=0;$i<@parts;$i++) {
3167: $fullpath .= '/'.$parts[$i];
3168: if ((-e $fullpath)!=1) {
3169: mkdir($fullpath,0777);
3170: }
3171: }
3172: open(my $fh,'>'.$fullpath.'/'.$fname);
3173: print $fh $env{'form.'.$formname};
3174: close($fh);
3175: if ($context eq 'existingfile') {
3176: my @info = stat($fullpath.'/'.$fname);
3177: return ($fullpath.'/'.$fname,$info[9]);
3178: } else {
3179: return $fullpath.'/'.$fname;
3180: }
3181: }
3182: if ($subdir eq 'scantron') {
3183: $fname = 'scantron_orig_'.$fname;
3184: } else {
3185: $fname="$subdir/$fname";
3186: }
3187: if ($context eq 'coursedoc') {
3188: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3189: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3190: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3191: return &finishuserfileupload($docuname,$docudom,
3192: $formname,$fname,$parser,$allfiles,
3193: $codebase,$thumbwidth,$thumbheight,
3194: $resizewidth,$resizeheight,$context,$mimetype);
3195: } else {
3196: $fname=$env{'form.folder'}.'/'.$fname;
3197: return &process_coursefile('uploaddoc',$docuname,$docudom,
3198: $fname,$formname,$parser,
3199: $allfiles,$codebase,$mimetype);
3200: }
3201: } elsif (defined($destuname)) {
3202: my $docuname=$destuname;
3203: my $docudom=$destudom;
3204: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3205: $parser,$allfiles,$codebase,
3206: $thumbwidth,$thumbheight,
3207: $resizewidth,$resizeheight,$context,$mimetype);
3208: } else {
3209: my $docuname=$env{'user.name'};
3210: my $docudom=$env{'user.domain'};
3211: if (exists($env{'form.group'})) {
3212: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3213: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3214: }
3215: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3216: $parser,$allfiles,$codebase,
3217: $thumbwidth,$thumbheight,
3218: $resizewidth,$resizeheight,$context,$mimetype);
3219: }
3220: }
3221:
3222: sub finishuserfileupload {
3223: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3224: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3225: my $path=$docudom.'/'.$docuname.'/';
3226: my $filepath=$perlvar{'lonDocRoot'};
3227:
3228: my ($fnamepath,$file,$fetchthumb);
3229: $file=$fname;
3230: if ($fname=~m|/|) {
3231: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3232: $path.=$fnamepath.'/';
3233: }
3234: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3235: my $count;
3236: for ($count=4;$count<=$#parts;$count++) {
3237: $filepath.="/$parts[$count]";
3238: if ((-e $filepath)!=1) {
3239: mkdir($filepath,0777);
3240: }
3241: }
3242:
3243: # Save the file
3244: {
3245: if (!open(FH,'>'.$filepath.'/'.$file)) {
3246: &logthis('Failed to create '.$filepath.'/'.$file);
3247: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3248: return '/adm/notfound.html';
3249: }
3250: if ($context eq 'overwrite') {
3251: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3252: my $target = $filepath.'/'.$file;
3253: if (-e $source) {
3254: my @info = stat($source);
3255: if ($info[9] eq $env{'form.timestamp'}) {
3256: unless (&File::Copy::move($source,$target)) {
3257: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3258: return "Moving from $source failed";
3259: }
3260: } else {
3261: return "Temporary file: $source had unexpected date/time for last modification";
3262: }
3263: } else {
3264: return "Temporary file: $source missing";
3265: }
3266: } elsif (!print FH ($env{'form.'.$formname})) {
3267: &logthis('Failed to write to '.$filepath.'/'.$file);
3268: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3269: return '/adm/notfound.html';
3270: }
3271: close(FH);
3272: if ($resizewidth && $resizeheight) {
3273: my $mm = new File::MMagic;
3274: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3275: if ($mime_type =~ m{^image/}) {
3276: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3277: }
3278: }
3279: }
3280: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3281: if (ref($mimetype)) {
3282: if ($$mimetype eq '') {
3283: my $mm = new File::MMagic;
3284: my $type = $mm->checktype_filename($filepath.'/'.$file);
3285: $$mimetype = $type;
3286: }
3287: }
3288: }
3289: if ($parser eq 'parse') {
3290: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3291: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3292: $allfiles,$codebase);
3293: unless ($parse_result eq 'ok') {
3294: &logthis('Failed to parse '.$filepath.$file.
3295: ' for embedded media: '.$parse_result);
3296: }
3297: }
3298: }
3299: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3300: my $input = $filepath.'/'.$file;
3301: my $output = $filepath.'/'.'tn-'.$file;
3302: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3303: system("convert -sample $thumbsize $input $output");
3304: if (-e $filepath.'/'.'tn-'.$file) {
3305: $fetchthumb = 1;
3306: }
3307: }
3308:
3309: # Notify homeserver to grep it
3310: #
3311: my $docuhome=&homeserver($docuname,$docudom);
3312: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3313: if ($fetchresult eq 'ok') {
3314: if ($fetchthumb) {
3315: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3316: if ($thumbresult ne 'ok') {
3317: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3318: $docuhome.': '.$thumbresult);
3319: }
3320: }
3321: #
3322: # Return the URL to it
3323: return '/uploaded/'.$path.$file;
3324: } else {
3325: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3326: ': '.$fetchresult);
3327: return '/adm/notfound.html';
3328: }
3329: }
3330:
3331: sub extract_embedded_items {
3332: my ($fullpath,$allfiles,$codebase,$content) = @_;
3333: my @state = ();
3334: my (%lastids,%related,%shockwave,%flashvars);
3335: my %javafiles = (
3336: codebase => '',
3337: code => '',
3338: archive => ''
3339: );
3340: my %mediafiles = (
3341: src => '',
3342: movie => '',
3343: );
3344: my $p;
3345: if ($content) {
3346: $p = HTML::LCParser->new($content);
3347: } else {
3348: $p = HTML::LCParser->new($fullpath);
3349: }
3350: while (my $t=$p->get_token()) {
3351: if ($t->[0] eq 'S') {
3352: my ($tagname, $attr) = ($t->[1],$t->[2]);
3353: push(@state, $tagname);
3354: if (lc($tagname) eq 'allow') {
3355: &add_filetype($allfiles,$attr->{'src'},'src');
3356: }
3357: if (lc($tagname) eq 'img') {
3358: &add_filetype($allfiles,$attr->{'src'},'src');
3359: }
3360: if (lc($tagname) eq 'a') {
3361: &add_filetype($allfiles,$attr->{'href'},'href');
3362: }
3363: if (lc($tagname) eq 'script') {
3364: my $src;
3365: if ($attr->{'archive'} =~ /\.jar$/i) {
3366: &add_filetype($allfiles,$attr->{'archive'},'archive');
3367: } else {
3368: if ($attr->{'src'} ne '') {
3369: $src = $attr->{'src'};
3370: &add_filetype($allfiles,$src,'src');
3371: }
3372: }
3373: my $text = $p->get_trimmed_text();
3374: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3375: my @swfargs = split(/,/,$1);
3376: foreach my $item (@swfargs) {
3377: $item =~ s/["']//g;
3378: $item =~ s/^\s+//;
3379: $item =~ s/\s+$//;
3380: }
3381: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3382: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3383: push(@{$related{$swfargs[0]}},$swfargs[2]);
3384: } else {
3385: $related{$swfargs[0]} = [$swfargs[2]];
3386: }
3387: }
3388: }
3389: }
3390: if (lc($tagname) eq 'link') {
3391: if (lc($attr->{'rel'}) eq 'stylesheet') {
3392: &add_filetype($allfiles,$attr->{'href'},'href');
3393: }
3394: }
3395: if (lc($tagname) eq 'object' ||
3396: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3397: foreach my $item (keys(%javafiles)) {
3398: $javafiles{$item} = '';
3399: }
3400: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3401: $lastids{lc($tagname)} = $attr->{'id'};
3402: }
3403: }
3404: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3405: my $name = lc($attr->{'name'});
3406: foreach my $item (keys(%javafiles)) {
3407: if ($name eq $item) {
3408: $javafiles{$item} = $attr->{'value'};
3409: last;
3410: }
3411: }
3412: my $pathfrom;
3413: foreach my $item (keys(%mediafiles)) {
3414: if ($name eq $item) {
3415: $pathfrom = $attr->{'value'};
3416: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3417: &add_filetype($allfiles,$pathfrom,$name);
3418: last;
3419: }
3420: }
3421: if ($name eq 'flashvars') {
3422: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3423: }
3424: if ($pathfrom ne '') {
3425: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3426: $pathfrom);
3427: }
3428: }
3429: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3430: foreach my $item (keys(%javafiles)) {
3431: if ($attr->{$item}) {
3432: $javafiles{$item} = $attr->{$item};
3433: last;
3434: }
3435: }
3436: foreach my $item (keys(%mediafiles)) {
3437: if ($attr->{$item}) {
3438: &add_filetype($allfiles,$attr->{$item},$item);
3439: last;
3440: }
3441: }
3442: if (lc($tagname) eq 'embed') {
3443: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3444: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3445: $attr->{'src'});
3446: }
3447: }
3448: }
3449: if ($t->[4] =~ m{/>$}) {
3450: pop(@state);
3451: }
3452: } elsif ($t->[0] eq 'E') {
3453: my ($tagname) = ($t->[1]);
3454: if ($javafiles{'codebase'} ne '') {
3455: $javafiles{'codebase'} .= '/';
3456: }
3457: if (lc($tagname) eq 'applet' ||
3458: lc($tagname) eq 'object' ||
3459: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3460: ) {
3461: foreach my $item (keys(%javafiles)) {
3462: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3463: my $file=$javafiles{'codebase'}.$javafiles{$item};
3464: &add_filetype($allfiles,$file,$item);
3465: }
3466: }
3467: }
3468: pop @state;
3469: }
3470: }
3471: foreach my $id (sort(keys(%flashvars))) {
3472: if ($shockwave{$id} ne '') {
3473: my @pairs = split(/\&/,$flashvars{$id});
3474: foreach my $pair (@pairs) {
3475: my ($key,$value) = split(/\=/,$pair);
3476: if ($key eq 'thumb') {
3477: &add_filetype($allfiles,$value,$key);
3478: } elsif ($key eq 'content') {
3479: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3480: my ($ext) = ($value =~ /\.([^.]+)$/);
3481: if ($ext ne '') {
3482: &add_filetype($allfiles,$path.$value,$ext);
3483: }
3484: }
3485: }
3486: }
3487: }
3488: return 'ok';
3489: }
3490:
3491: sub add_filetype {
3492: my ($allfiles,$file,$type)=@_;
3493: if (exists($allfiles->{$file})) {
3494: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3495: push(@{$allfiles->{$file}}, &escape($type));
3496: }
3497: } else {
3498: @{$allfiles->{$file}} = (&escape($type));
3499: }
3500: }
3501:
3502: sub embedded_dependency {
3503: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3504: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3505: if (($identifier ne '') &&
3506: (ref($related->{$identifier}) eq 'ARRAY') &&
3507: ($pathfrom ne '')) {
3508: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3509: foreach my $dep (@{$related->{$identifier}}) {
3510: &add_filetype($allfiles,$path.$dep,'object');
3511: }
3512: }
3513: }
3514: return;
3515: }
3516:
3517: sub removeuploadedurl {
3518: my ($url)=@_;
3519: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3520: return &removeuserfile($uname,$udom,$fname);
3521: }
3522:
3523: sub removeuserfile {
3524: my ($docuname,$docudom,$fname)=@_;
3525: my $home=&homeserver($docuname,$docudom);
3526: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3527: if ($result eq 'ok') {
3528: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3529: my $metafile = $fname.'.meta';
3530: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3531: my $url = "/uploaded/$docudom/$docuname/$fname";
3532: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3533: my $sqlresult =
3534: &update_portfolio_table($docuname,$docudom,$file,
3535: 'portfolio_metadata',$group,
3536: 'delete');
3537: }
3538: }
3539: return $result;
3540: }
3541:
3542: sub mkdiruserfile {
3543: my ($docuname,$docudom,$dir)=@_;
3544: my $home=&homeserver($docuname,$docudom);
3545: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3546: }
3547:
3548: sub renameuserfile {
3549: my ($docuname,$docudom,$old,$new)=@_;
3550: my $home=&homeserver($docuname,$docudom);
3551: my $result = &reply("renameuserfile:$docudom:$docuname:".
3552: &escape("$old").':'.&escape("$new"),$home);
3553: if ($result eq 'ok') {
3554: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3555: my $oldmeta = $old.'.meta';
3556: my $newmeta = $new.'.meta';
3557: my $metaresult =
3558: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3559: my $url = "/uploaded/$docudom/$docuname/$old";
3560: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3561: my $sqlresult =
3562: &update_portfolio_table($docuname,$docudom,$file,
3563: 'portfolio_metadata',$group,
3564: 'delete');
3565: }
3566: }
3567: return $result;
3568: }
3569:
3570: # ------------------------------------------------------------------------- Log
3571:
3572: sub log {
3573: my ($dom,$nam,$hom,$what)=@_;
3574: return critical("log:$dom:$nam:$what",$hom);
3575: }
3576:
3577: # ------------------------------------------------------------------ Course Log
3578: #
3579: # This routine flushes several buffers of non-mission-critical nature
3580: #
3581:
3582: sub flushcourselogs {
3583: &logthis('Flushing log buffers');
3584: #
3585: # course logs
3586: # This is a log of all transactions in a course, which can be used
3587: # for data mining purposes
3588: #
3589: # It also collects the courseid database, which lists last transaction
3590: # times and course titles for all courseids
3591: #
3592: my %courseidbuffer=();
3593: foreach my $crsid (keys(%courselogs)) {
3594: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3595: &escape($courselogs{$crsid}),
3596: $coursehombuf{$crsid}) eq 'ok') {
3597: delete $courselogs{$crsid};
3598: } else {
3599: &logthis('Failed to flush log buffer for '.$crsid);
3600: if (length($courselogs{$crsid})>40000) {
3601: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3602: " exceeded maximum size, deleting.</font>");
3603: delete $courselogs{$crsid};
3604: }
3605: }
3606: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3607: 'description' => $coursedescrbuf{$crsid},
3608: 'inst_code' => $courseinstcodebuf{$crsid},
3609: 'type' => $coursetypebuf{$crsid},
3610: 'owner' => $courseownerbuf{$crsid},
3611: };
3612: }
3613: #
3614: # Write course id database (reverse lookup) to homeserver of courses
3615: # Is used in pickcourse
3616: #
3617: foreach my $crs_home (keys(%courseidbuffer)) {
3618: my $response = &courseidput(&host_domain($crs_home),
3619: $courseidbuffer{$crs_home},
3620: $crs_home,'timeonly');
3621: }
3622: #
3623: # File accesses
3624: # Writes to the dynamic metadata of resources to get hit counts, etc.
3625: #
3626: foreach my $entry (keys(%accesshash)) {
3627: if ($entry =~ /___count$/) {
3628: my ($dom,$name);
3629: ($dom,$name,undef)=
3630: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3631: if (! defined($dom) || $dom eq '' ||
3632: ! defined($name) || $name eq '') {
3633: my $cid = $env{'request.course.id'};
3634: $dom = $env{'request.'.$cid.'.domain'};
3635: $name = $env{'request.'.$cid.'.num'};
3636: }
3637: my $value = $accesshash{$entry};
3638: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3639: my %temphash=($url => $value);
3640: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3641: if ($result eq 'ok') {
3642: delete $accesshash{$entry};
3643: }
3644: } else {
3645: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3646: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3647: my %temphash=($entry => $accesshash{$entry});
3648: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3649: delete $accesshash{$entry};
3650: }
3651: }
3652: }
3653: #
3654: # Roles
3655: # Reverse lookup of user roles for course faculty/staff and co-authorship
3656: #
3657: foreach my $entry (keys(%userrolehash)) {
3658: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3659: split(/\:/,$entry);
3660: if (&Apache::lonnet::put('nohist_userroles',
3661: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3662: $rudom,$runame) eq 'ok') {
3663: delete $userrolehash{$entry};
3664: }
3665: }
3666: #
3667: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3668: #
3669: my %domrolebuffer = ();
3670: foreach my $entry (keys(%domainrolehash)) {
3671: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3672: if ($domrolebuffer{$rudom}) {
3673: $domrolebuffer{$rudom}.='&'.&escape($entry).
3674: '='.&escape($domainrolehash{$entry});
3675: } else {
3676: $domrolebuffer{$rudom}.=&escape($entry).
3677: '='.&escape($domainrolehash{$entry});
3678: }
3679: delete $domainrolehash{$entry};
3680: }
3681: foreach my $dom (keys(%domrolebuffer)) {
3682: my %servers = &get_servers($dom,'library');
3683: foreach my $tryserver (keys(%servers)) {
3684: unless (&reply('domroleput:'.$dom.':'.
3685: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3686: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3687: }
3688: }
3689: }
3690: $dumpcount++;
3691: }
3692:
3693: sub courselog {
3694: my $what=shift;
3695: $what=time.':'.$what;
3696: unless ($env{'request.course.id'}) { return ''; }
3697: $coursedombuf{$env{'request.course.id'}}=
3698: $env{'course.'.$env{'request.course.id'}.'.domain'};
3699: $coursenumbuf{$env{'request.course.id'}}=
3700: $env{'course.'.$env{'request.course.id'}.'.num'};
3701: $coursehombuf{$env{'request.course.id'}}=
3702: $env{'course.'.$env{'request.course.id'}.'.home'};
3703: $coursedescrbuf{$env{'request.course.id'}}=
3704: $env{'course.'.$env{'request.course.id'}.'.description'};
3705: $courseinstcodebuf{$env{'request.course.id'}}=
3706: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3707: $courseownerbuf{$env{'request.course.id'}}=
3708: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3709: $coursetypebuf{$env{'request.course.id'}}=
3710: $env{'course.'.$env{'request.course.id'}.'.type'};
3711: if (defined $courselogs{$env{'request.course.id'}}) {
3712: $courselogs{$env{'request.course.id'}}.='&'.$what;
3713: } else {
3714: $courselogs{$env{'request.course.id'}}.=$what;
3715: }
3716: if (length($courselogs{$env{'request.course.id'}})>4048) {
3717: &flushcourselogs();
3718: }
3719: }
3720:
3721: sub courseacclog {
3722: my $fnsymb=shift;
3723: unless ($env{'request.course.id'}) { return ''; }
3724: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3725: if ($fnsymb=~/$LONCAPA::assess_re/) {
3726: $what.=':POST';
3727: # FIXME: Probably ought to escape things....
3728: foreach my $key (keys(%env)) {
3729: if ($key=~/^form\.(.*)/) {
3730: my $formitem = $1;
3731: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3732: $what.=':'.$formitem.'='.$env{$key};
3733: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3734: $what.=':'.$formitem.'='.$env{$key};
3735: }
3736: }
3737: }
3738: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3739: # FIXME: We should not be depending on a form parameter that someone
3740: # editing lonsearchcat.pm might change in the future.
3741: if ($env{'form.phase'} eq 'course_search') {
3742: $what.= ':POST';
3743: # FIXME: Probably ought to escape things....
3744: foreach my $element ('courseexp','crsfulltext','crsrelated',
3745: 'crsdiscuss') {
3746: $what.=':'.$element.'='.$env{'form.'.$element};
3747: }
3748: }
3749: }
3750: &courselog($what);
3751: }
3752:
3753: sub countacc {
3754: my $url=&declutter(shift);
3755: return if (! defined($url) || $url eq '');
3756: unless ($env{'request.course.id'}) { return ''; }
3757: #
3758: # Mark that this url was used in this course
3759: #
3760: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3761: #
3762: # Increase the access count for this resource in this child process
3763: #
3764: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3765: $accesshash{$key}++;
3766: }
3767:
3768: sub linklog {
3769: my ($from,$to)=@_;
3770: $from=&declutter($from);
3771: $to=&declutter($to);
3772: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3773: $accesshash{$to.'___'.$from.'___goto'}=1;
3774: }
3775:
3776: sub statslog {
3777: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3778: if ($users<2) { return; }
3779: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3780: 'course' => $env{'request.course.id'},
3781: 'sections' => '"all"',
3782: 'num_students' => $users,
3783: 'part' => $part,
3784: 'symb' => $symb,
3785: 'mean_tries' => $av_attempts,
3786: 'deg_of_diff' => $degdiff});
3787: foreach my $key (keys(%dynstore)) {
3788: $accesshash{$key}=$dynstore{$key};
3789: }
3790: }
3791:
3792: sub userrolelog {
3793: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3794: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3795: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3796: $userrolehash
3797: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3798: =$tend.':'.$tstart;
3799: }
3800: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3801: $userrolehash
3802: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3803: =$tend.':'.$tstart;
3804: }
3805: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3806: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3807: $domainrolehash
3808: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3809: = $tend.':'.$tstart;
3810: }
3811: }
3812:
3813: sub courserolelog {
3814: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3815: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3816: my $cdom = $1;
3817: my $cnum = $2;
3818: my $sec = $3;
3819: my $namespace = 'rolelog';
3820: my %storehash = (
3821: role => $trole,
3822: start => $tstart,
3823: end => $tend,
3824: selfenroll => $selfenroll,
3825: context => $context,
3826: );
3827: if ($trole eq 'gr') {
3828: $namespace = 'groupslog';
3829: $storehash{'group'} = $sec;
3830: } else {
3831: $storehash{'section'} = $sec;
3832: }
3833: &write_log('course',$namespace,\%storehash,$delflag,$username,
3834: $domain,$cnum,$cdom);
3835: if (($trole ne 'st') || ($sec ne '')) {
3836: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3837: }
3838: }
3839: return;
3840: }
3841:
3842: sub domainrolelog {
3843: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3844: if ($area =~ m{^/($match_domain)/$}) {
3845: my $cdom = $1;
3846: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3847: my $namespace = 'rolelog';
3848: my %storehash = (
3849: role => $trole,
3850: start => $tstart,
3851: end => $tend,
3852: context => $context,
3853: );
3854: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3855: $domain,$domconfiguser,$cdom);
3856: }
3857: return;
3858:
3859: }
3860:
3861: sub coauthorrolelog {
3862: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3863: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3864: my $audom = $1;
3865: my $auname = $2;
3866: my $namespace = 'rolelog';
3867: my %storehash = (
3868: role => $trole,
3869: start => $tstart,
3870: end => $tend,
3871: context => $context,
3872: );
3873: &write_log('author',$namespace,\%storehash,$delflag,$username,
3874: $domain,$auname,$audom);
3875: }
3876: return;
3877: }
3878:
3879: sub get_course_adv_roles {
3880: my ($cid,$codes) = @_;
3881: $cid=$env{'request.course.id'} unless (defined($cid));
3882: my %coursehash=&coursedescription($cid);
3883: my $crstype = &Apache::loncommon::course_type($cid);
3884: my %nothide=();
3885: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3886: if ($user !~ /:/) {
3887: $nothide{join(':',split(/[\@]/,$user))}=1;
3888: } else {
3889: $nothide{$user}=1;
3890: }
3891: }
3892: my %returnhash=();
3893: my %dumphash=
3894: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3895: my $now=time;
3896: my %privileged;
3897: foreach my $entry (keys(%dumphash)) {
3898: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3899: if (($tstart) && ($tstart<0)) { next; }
3900: if (($tend) && ($tend<$now)) { next; }
3901: if (($tstart) && ($now<$tstart)) { next; }
3902: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3903: if ($username eq '' || $domain eq '') { next; }
3904: unless (ref($privileged{$domain}) eq 'HASH') {
3905: my %dompersonnel =
3906: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3907: $privileged{$domain} = {};
3908: foreach my $server (keys(%dompersonnel)) {
3909: if (ref($dompersonnel{$server}) eq 'HASH') {
3910: foreach my $user (keys(%{$dompersonnel{$server}})) {
3911: my ($trole,$uname,$udom) = split(/:/,$user);
3912: $privileged{$udom}{$uname} = 1;
3913: }
3914: }
3915: }
3916: }
3917: if ((exists($privileged{$domain}{$username})) &&
3918: (!$nothide{$username.':'.$domain})) { next; }
3919: if ($role eq 'cr') { next; }
3920: if ($codes) {
3921: if ($section) { $role .= ':'.$section; }
3922: if ($returnhash{$role}) {
3923: $returnhash{$role}.=','.$username.':'.$domain;
3924: } else {
3925: $returnhash{$role}=$username.':'.$domain;
3926: }
3927: } else {
3928: my $key=&plaintext($role,$crstype);
3929: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3930: if ($returnhash{$key}) {
3931: $returnhash{$key}.=','.$username.':'.$domain;
3932: } else {
3933: $returnhash{$key}=$username.':'.$domain;
3934: }
3935: }
3936: }
3937: return %returnhash;
3938: }
3939:
3940: sub get_my_roles {
3941: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3942: unless (defined($uname)) { $uname=$env{'user.name'}; }
3943: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3944: my (%dumphash,%nothide);
3945: if ($context eq 'userroles') {
3946: %dumphash = &dump('roles',$udom,$uname);
3947: } else {
3948: %dumphash=
3949: &dump('nohist_userroles',$udom,$uname);
3950: if ($hidepriv) {
3951: my %coursehash=&coursedescription($udom.'_'.$uname);
3952: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3953: if ($user !~ /:/) {
3954: $nothide{join(':',split(/[\@]/,$user))} = 1;
3955: } else {
3956: $nothide{$user} = 1;
3957: }
3958: }
3959: }
3960: }
3961: my %returnhash=();
3962: my $now=time;
3963: my %privileged;
3964: foreach my $entry (keys(%dumphash)) {
3965: my ($role,$tend,$tstart);
3966: if ($context eq 'userroles') {
3967: next if ($entry =~ /^rolesdef/);
3968: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3969: } else {
3970: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3971: }
3972: if (($tstart) && ($tstart<0)) { next; }
3973: my $status = 'active';
3974: if (($tend) && ($tend<=$now)) {
3975: $status = 'previous';
3976: }
3977: if (($tstart) && ($now<$tstart)) {
3978: $status = 'future';
3979: }
3980: if (ref($types) eq 'ARRAY') {
3981: if (!grep(/^\Q$status\E$/,@{$types})) {
3982: next;
3983: }
3984: } else {
3985: if ($status ne 'active') {
3986: next;
3987: }
3988: }
3989: my ($rolecode,$username,$domain,$section,$area);
3990: if ($context eq 'userroles') {
3991: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
3992: (undef,$domain,$username,$section) = split(/\//,$area);
3993: } else {
3994: ($role,$username,$domain,$section) = split(/\:/,$entry);
3995: }
3996: if (ref($roledoms) eq 'ARRAY') {
3997: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3998: next;
3999: }
4000: }
4001: if (ref($roles) eq 'ARRAY') {
4002: if (!grep(/^\Q$role\E$/,@{$roles})) {
4003: if ($role =~ /^cr\//) {
4004: if (!grep(/^cr$/,@{$roles})) {
4005: next;
4006: }
4007: } elsif ($role =~ /^gr\//) {
4008: if (!grep(/^gr$/,@{$roles})) {
4009: next;
4010: }
4011: } else {
4012: next;
4013: }
4014: }
4015: }
4016: if ($hidepriv) {
4017: if ($context eq 'userroles') {
4018: if ((&privileged($username,$domain)) &&
4019: (!$nothide{$username.':'.$domain})) {
4020: next;
4021: }
4022: } else {
4023: unless (ref($privileged{$domain}) eq 'HASH') {
4024: my %dompersonnel =
4025: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
4026: $privileged{$domain} = {};
4027: if (keys(%dompersonnel)) {
4028: foreach my $server (keys(%dompersonnel)) {
4029: if (ref($dompersonnel{$server}) eq 'HASH') {
4030: foreach my $user (keys(%{$dompersonnel{$server}})) {
4031: my ($trole,$uname,$udom) = split(/:/,$user);
4032: $privileged{$udom}{$uname} = $trole;
4033: }
4034: }
4035: }
4036: }
4037: }
4038: if (exists($privileged{$domain}{$username})) {
4039: if (!$nothide{$username.':'.$domain}) {
4040: next;
4041: }
4042: }
4043: }
4044: }
4045: if ($withsec) {
4046: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4047: $tstart.':'.$tend;
4048: } else {
4049: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4050: }
4051: }
4052: return %returnhash;
4053: }
4054:
4055: # ----------------------------------------------------- Frontpage Announcements
4056: #
4057: #
4058:
4059: sub postannounce {
4060: my ($server,$text)=@_;
4061: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4062: unless ($text=~/\w/) { $text=''; }
4063: return &reply('setannounce:'.&escape($text),$server);
4064: }
4065:
4066: sub getannounce {
4067:
4068: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4069: my $announcement='';
4070: while (my $line = <$fh>) { $announcement .= $line; }
4071: close($fh);
4072: if ($announcement=~/\w/) {
4073: return
4074: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4075: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4076: } else {
4077: return '';
4078: }
4079: } else {
4080: return '';
4081: }
4082: }
4083:
4084: # ---------------------------------------------------------- Course ID routines
4085: # Deal with domain's nohist_courseid.db files
4086: #
4087:
4088: sub courseidput {
4089: my ($domain,$storehash,$coursehome,$caller) = @_;
4090: return unless (ref($storehash) eq 'HASH');
4091: my $outcome;
4092: if ($caller eq 'timeonly') {
4093: my $cids = '';
4094: foreach my $item (keys(%$storehash)) {
4095: $cids.=&escape($item).'&';
4096: }
4097: $cids=~s/\&$//;
4098: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4099: $coursehome);
4100: } else {
4101: my $items = '';
4102: foreach my $item (keys(%$storehash)) {
4103: $items.= &escape($item).'='.
4104: &freeze_escape($$storehash{$item}).'&';
4105: }
4106: $items=~s/\&$//;
4107: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4108: $coursehome);
4109: }
4110: if ($outcome eq 'unknown_cmd') {
4111: my $what;
4112: foreach my $cid (keys(%$storehash)) {
4113: $what .= &escape($cid).'=';
4114: foreach my $item ('description','inst_code','owner','type') {
4115: $what .= &escape($storehash->{$cid}{$item}).':';
4116: }
4117: $what =~ s/\:$/&/;
4118: }
4119: $what =~ s/\&$//;
4120: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4121: } else {
4122: return $outcome;
4123: }
4124: }
4125:
4126: sub courseiddump {
4127: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4128: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4129: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4130: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
4131: my $as_hash = 1;
4132: my %returnhash;
4133: if (!$domfilter) { $domfilter=''; }
4134: my %libserv = &all_library();
4135: foreach my $tryserver (keys(%libserv)) {
4136: if ( ( $hostidflag == 1
4137: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4138: || (!defined($hostidflag)) ) {
4139:
4140: if (($domfilter eq '') ||
4141: (&host_domain($tryserver) eq $domfilter)) {
4142: my $rep;
4143: if (grep { $_ eq $tryserver } current_machine_ids()) {
4144: $rep = LONCAPA::Lond::dump_course_id_handler(
4145: join(":", (&host_domain($tryserver), $sincefilter,
4146: &escape($descfilter), &escape($instcodefilter),
4147: &escape($ownerfilter), &escape($coursefilter),
4148: &escape($typefilter), &escape($regexp_ok),
4149: $as_hash, &escape($selfenrollonly),
4150: &escape($catfilter), $showhidden, $caller,
4151: &escape($cloner), &escape($cc_clone), $cloneonly,
4152: &escape($createdbefore), &escape($createdafter),
4153: &escape($creationcontext), $domcloner)));
4154: } else {
4155: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4156: $sincefilter.':'.&escape($descfilter).':'.
4157: &escape($instcodefilter).':'.&escape($ownerfilter).
4158: ':'.&escape($coursefilter).':'.&escape($typefilter).
4159: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4160: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4161: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4162: &escape($cc_clone).':'.$cloneonly.':'.
4163: &escape($createdbefore).':'.&escape($createdafter).':'.
4164: &escape($creationcontext).':'.$domcloner,
4165: $tryserver);
4166: }
4167:
4168: my @pairs=split(/\&/,$rep);
4169: foreach my $item (@pairs) {
4170: my ($key,$value)=split(/\=/,$item,2);
4171: $key = &unescape($key);
4172: next if ($key =~ /^error: 2 /);
4173: my $result = &thaw_unescape($value);
4174: if (ref($result) eq 'HASH') {
4175: $returnhash{$key}=$result;
4176: } else {
4177: my @responses = split(/:/,$value);
4178: my @items = ('description','inst_code','owner','type');
4179: for (my $i=0; $i<@responses; $i++) {
4180: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4181: }
4182: }
4183: }
4184: }
4185: }
4186: }
4187: return %returnhash;
4188: }
4189:
4190: sub courselastaccess {
4191: my ($cdom,$cnum,$hostidref) = @_;
4192: my %returnhash;
4193: if ($cdom && $cnum) {
4194: my $chome = &homeserver($cnum,$cdom);
4195: if ($chome ne 'no_host') {
4196: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4197: &extract_lastaccess(\%returnhash,$rep);
4198: }
4199: } else {
4200: if (!$cdom) { $cdom=''; }
4201: my %libserv = &all_library();
4202: foreach my $tryserver (keys(%libserv)) {
4203: if (ref($hostidref) eq 'ARRAY') {
4204: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4205: }
4206: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4207: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4208: &extract_lastaccess(\%returnhash,$rep);
4209: }
4210: }
4211: }
4212: return %returnhash;
4213: }
4214:
4215: sub extract_lastaccess {
4216: my ($returnhash,$rep) = @_;
4217: if (ref($returnhash) eq 'HASH') {
4218: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4219: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4220: $rep eq '') {
4221: my @pairs=split(/\&/,$rep);
4222: foreach my $item (@pairs) {
4223: my ($key,$value)=split(/\=/,$item,2);
4224: $key = &unescape($key);
4225: next if ($key =~ /^error: 2 /);
4226: $returnhash->{$key} = &thaw_unescape($value);
4227: }
4228: }
4229: }
4230: return;
4231: }
4232:
4233: # ---------------------------------------------------------- DC e-mail
4234:
4235: sub dcmailput {
4236: my ($domain,$msgid,$message,$server)=@_;
4237: my $status = &Apache::lonnet::critical(
4238: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4239: &escape($message),$server);
4240: return $status;
4241: }
4242:
4243: sub dcmaildump {
4244: my ($dom,$startdate,$enddate,$senders) = @_;
4245: my %returnhash=();
4246:
4247: if (defined(&domain($dom,'primary'))) {
4248: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4249: &escape($enddate).':';
4250: my @esc_senders=map { &escape($_)} @$senders;
4251: $cmd.=&escape(join('&',@esc_senders));
4252: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4253: my ($key,$value) = split(/\=/,$line,2);
4254: if (($key) && ($value)) {
4255: $returnhash{&unescape($key)} = &unescape($value);
4256: }
4257: }
4258: }
4259: return %returnhash;
4260: }
4261: # ---------------------------------------------------------- Domain roles
4262:
4263: sub get_domain_roles {
4264: my ($dom,$roles,$startdate,$enddate)=@_;
4265: if ((!defined($startdate)) || ($startdate eq '')) {
4266: $startdate = '.';
4267: }
4268: if ((!defined($enddate)) || ($enddate eq '')) {
4269: $enddate = '.';
4270: }
4271: my $rolelist;
4272: if (ref($roles) eq 'ARRAY') {
4273: $rolelist = join(':',@{$roles});
4274: }
4275: my %personnel = ();
4276:
4277: my %servers = &get_servers($dom,'library');
4278: foreach my $tryserver (keys(%servers)) {
4279: %{$personnel{$tryserver}}=();
4280: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4281: &escape($startdate).':'.
4282: &escape($enddate).':'.
4283: &escape($rolelist), $tryserver))) {
4284: my ($key,$value) = split(/\=/,$line,2);
4285: if (($key) && ($value)) {
4286: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4287: }
4288: }
4289: }
4290: return %personnel;
4291: }
4292:
4293: # ----------------------------------------------------------- Interval timing
4294:
4295: {
4296: # Caches needed for speedup of navmaps
4297: # We don't want to cache this for very long at all (5 seconds at most)
4298: #
4299: # The user for whom we cache
4300: my $cachedkey='';
4301: # The cached times for this user
4302: my %cachedtimes=();
4303: # When this was last done
4304: my $cachedtime=();
4305:
4306: sub load_all_first_access {
4307: my ($uname,$udom)=@_;
4308: if (($cachedkey eq $uname.':'.$udom) &&
4309: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4310: return;
4311: }
4312: $cachedtime=time;
4313: $cachedkey=$uname.':'.$udom;
4314: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4315: }
4316:
4317: sub get_first_access {
4318: my ($type,$argsymb,$argmap)=@_;
4319: my ($symb,$courseid,$udom,$uname)=&whichuser();
4320: if ($argsymb) { $symb=$argsymb; }
4321: my ($map,$id,$res)=&decode_symb($symb);
4322: if ($argmap) { $map = $argmap; }
4323: if ($type eq 'course') {
4324: $res='course';
4325: } elsif ($type eq 'map') {
4326: $res=&symbread($map);
4327: } else {
4328: $res=$symb;
4329: }
4330: &load_all_first_access($uname,$udom);
4331: return $cachedtimes{"$courseid\0$res"};
4332: }
4333:
4334: sub set_first_access {
4335: my ($type,$interval)=@_;
4336: my ($symb,$courseid,$udom,$uname)=&whichuser();
4337: my ($map,$id,$res)=&decode_symb($symb);
4338: if ($type eq 'course') {
4339: $res='course';
4340: } elsif ($type eq 'map') {
4341: $res=&symbread($map);
4342: } else {
4343: $res=$symb;
4344: }
4345: $cachedkey='';
4346: my $firstaccess=&get_first_access($type,$symb,$map);
4347: if (!$firstaccess) {
4348: my $start = time;
4349: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4350: $udom,$uname);
4351: if ($putres eq 'ok') {
4352: &put('timerinterval',{"$courseid\0$res"=>$interval},
4353: $udom,$uname);
4354: &appenv(
4355: {
4356: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4357: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4358: }
4359: );
4360: }
4361: return $putres;
4362: }
4363: return 'already_set';
4364: }
4365: }
4366: # --------------------------------------------- Set Expire Date for Spreadsheet
4367:
4368: sub expirespread {
4369: my ($uname,$udom,$stype,$usymb)=@_;
4370: my $cid=$env{'request.course.id'};
4371: if ($cid) {
4372: my $now=time;
4373: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4374: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4375: $env{'course.'.$cid.'.num'}.
4376: ':nohist_expirationdates:'.
4377: &escape($key).'='.$now,
4378: $env{'course.'.$cid.'.home'})
4379: }
4380: return 'ok';
4381: }
4382:
4383: # ----------------------------------------------------- Devalidate Spreadsheets
4384:
4385: sub devalidate {
4386: my ($symb,$uname,$udom)=@_;
4387: my $cid=$env{'request.course.id'};
4388: if ($cid) {
4389: # delete the stored spreadsheets for
4390: # - the student level sheet of this user in course's homespace
4391: # - the assessment level sheet for this resource
4392: # for this user in user's homespace
4393: # - current conditional state info
4394: my $key=$uname.':'.$udom.':';
4395: my $status=
4396: &del('nohist_calculatedsheets',
4397: [$key.'studentcalc:'],
4398: $env{'course.'.$cid.'.domain'},
4399: $env{'course.'.$cid.'.num'})
4400: .' '.
4401: &del('nohist_calculatedsheets_'.$cid,
4402: [$key.'assesscalc:'.$symb],$udom,$uname);
4403: unless ($status eq 'ok ok') {
4404: &logthis('Could not devalidate spreadsheet '.
4405: $uname.' at '.$udom.' for '.
4406: $symb.': '.$status);
4407: }
4408: &delenv('user.state.'.$cid);
4409: }
4410: }
4411:
4412: sub get_scalar {
4413: my ($string,$end) = @_;
4414: my $value;
4415: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4416: $value = $1;
4417: } elsif ($$string =~ s/^([^&]*?)&//) {
4418: $value = $1;
4419: }
4420: return &unescape($value);
4421: }
4422:
4423: sub array2str {
4424: my (@array) = @_;
4425: my $result=&arrayref2str(\@array);
4426: $result=~s/^__ARRAY_REF__//;
4427: $result=~s/__END_ARRAY_REF__$//;
4428: return $result;
4429: }
4430:
4431: sub arrayref2str {
4432: my ($arrayref) = @_;
4433: my $result='__ARRAY_REF__';
4434: foreach my $elem (@$arrayref) {
4435: if(ref($elem) eq 'ARRAY') {
4436: $result.=&arrayref2str($elem).'&';
4437: } elsif(ref($elem) eq 'HASH') {
4438: $result.=&hashref2str($elem).'&';
4439: } elsif(ref($elem)) {
4440: #print("Got a ref of ".(ref($elem))." skipping.");
4441: } else {
4442: $result.=&escape($elem).'&';
4443: }
4444: }
4445: $result=~s/\&$//;
4446: $result .= '__END_ARRAY_REF__';
4447: return $result;
4448: }
4449:
4450: sub hash2str {
4451: my (%hash) = @_;
4452: my $result=&hashref2str(\%hash);
4453: $result=~s/^__HASH_REF__//;
4454: $result=~s/__END_HASH_REF__$//;
4455: return $result;
4456: }
4457:
4458: sub hashref2str {
4459: my ($hashref)=@_;
4460: my $result='__HASH_REF__';
4461: foreach my $key (sort(keys(%$hashref))) {
4462: if (ref($key) eq 'ARRAY') {
4463: $result.=&arrayref2str($key).'=';
4464: } elsif (ref($key) eq 'HASH') {
4465: $result.=&hashref2str($key).'=';
4466: } elsif (ref($key)) {
4467: $result.='=';
4468: #print("Got a ref of ".(ref($key))." skipping.");
4469: } else {
4470: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4471: }
4472:
4473: if(ref($hashref->{$key}) eq 'ARRAY') {
4474: $result.=&arrayref2str($hashref->{$key}).'&';
4475: } elsif(ref($hashref->{$key}) eq 'HASH') {
4476: $result.=&hashref2str($hashref->{$key}).'&';
4477: } elsif(ref($hashref->{$key})) {
4478: $result.='&';
4479: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4480: } else {
4481: $result.=&escape($hashref->{$key}).'&';
4482: }
4483: }
4484: $result=~s/\&$//;
4485: $result .= '__END_HASH_REF__';
4486: return $result;
4487: }
4488:
4489: sub str2hash {
4490: my ($string)=@_;
4491: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4492: return %$hash;
4493: }
4494:
4495: sub str2hashref {
4496: my ($string) = @_;
4497:
4498: my %hash;
4499:
4500: if($string !~ /^__HASH_REF__/) {
4501: if (! ($string eq '' || !defined($string))) {
4502: $hash{'error'}='Not hash reference';
4503: }
4504: return (\%hash, $string);
4505: }
4506:
4507: $string =~ s/^__HASH_REF__//;
4508:
4509: while($string !~ /^__END_HASH_REF__/) {
4510: #key
4511: my $key='';
4512: if($string =~ /^__HASH_REF__/) {
4513: ($key, $string)=&str2hashref($string);
4514: if(defined($key->{'error'})) {
4515: $hash{'error'}='Bad data';
4516: return (\%hash, $string);
4517: }
4518: } elsif($string =~ /^__ARRAY_REF__/) {
4519: ($key, $string)=&str2arrayref($string);
4520: if($key->[0] eq 'Array reference error') {
4521: $hash{'error'}='Bad data';
4522: return (\%hash, $string);
4523: }
4524: } else {
4525: $string =~ s/^(.*?)=//;
4526: $key=&unescape($1);
4527: }
4528: $string =~ s/^=//;
4529:
4530: #value
4531: my $value='';
4532: if($string =~ /^__HASH_REF__/) {
4533: ($value, $string)=&str2hashref($string);
4534: if(defined($value->{'error'})) {
4535: $hash{'error'}='Bad data';
4536: return (\%hash, $string);
4537: }
4538: } elsif($string =~ /^__ARRAY_REF__/) {
4539: ($value, $string)=&str2arrayref($string);
4540: if($value->[0] eq 'Array reference error') {
4541: $hash{'error'}='Bad data';
4542: return (\%hash, $string);
4543: }
4544: } else {
4545: $value=&get_scalar(\$string,'__END_HASH_REF__');
4546: }
4547: $string =~ s/^&//;
4548:
4549: $hash{$key}=$value;
4550: }
4551:
4552: $string =~ s/^__END_HASH_REF__//;
4553:
4554: return (\%hash, $string);
4555: }
4556:
4557: sub str2array {
4558: my ($string)=@_;
4559: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4560: return @$array;
4561: }
4562:
4563: sub str2arrayref {
4564: my ($string) = @_;
4565: my @array;
4566:
4567: if($string !~ /^__ARRAY_REF__/) {
4568: if (! ($string eq '' || !defined($string))) {
4569: $array[0]='Array reference error';
4570: }
4571: return (\@array, $string);
4572: }
4573:
4574: $string =~ s/^__ARRAY_REF__//;
4575:
4576: while($string !~ /^__END_ARRAY_REF__/) {
4577: my $value='';
4578: if($string =~ /^__HASH_REF__/) {
4579: ($value, $string)=&str2hashref($string);
4580: if(defined($value->{'error'})) {
4581: $array[0] ='Array reference error';
4582: return (\@array, $string);
4583: }
4584: } elsif($string =~ /^__ARRAY_REF__/) {
4585: ($value, $string)=&str2arrayref($string);
4586: if($value->[0] eq 'Array reference error') {
4587: $array[0] ='Array reference error';
4588: return (\@array, $string);
4589: }
4590: } else {
4591: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4592: }
4593: $string =~ s/^&//;
4594:
4595: push(@array, $value);
4596: }
4597:
4598: $string =~ s/^__END_ARRAY_REF__//;
4599:
4600: return (\@array, $string);
4601: }
4602:
4603: # -------------------------------------------------------------------Temp Store
4604:
4605: sub tmpreset {
4606: my ($symb,$namespace,$domain,$stuname) = @_;
4607: if (!$symb) {
4608: $symb=&symbread();
4609: if (!$symb) { $symb= $env{'request.url'}; }
4610: }
4611: $symb=escape($symb);
4612:
4613: if (!$namespace) { $namespace=$env{'request.state'}; }
4614: $namespace=~s/\//\_/g;
4615: $namespace=~s/\W//g;
4616:
4617: if (!$domain) { $domain=$env{'user.domain'}; }
4618: if (!$stuname) { $stuname=$env{'user.name'}; }
4619: if ($domain eq 'public' && $stuname eq 'public') {
4620: $stuname=$ENV{'REMOTE_ADDR'};
4621: }
4622: my $path=LONCAPA::tempdir();
4623: my %hash;
4624: if (tie(%hash,'GDBM_File',
4625: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4626: &GDBM_WRCREAT(),0640)) {
4627: foreach my $key (keys(%hash)) {
4628: if ($key=~ /:$symb/) {
4629: delete($hash{$key});
4630: }
4631: }
4632: }
4633: }
4634:
4635: sub tmpstore {
4636: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4637:
4638: if (!$symb) {
4639: $symb=&symbread();
4640: if (!$symb) { $symb= $env{'request.url'}; }
4641: }
4642: $symb=escape($symb);
4643:
4644: if (!$namespace) {
4645: # I don't think we would ever want to store this for a course.
4646: # it seems this will only be used if we don't have a course.
4647: #$namespace=$env{'request.course.id'};
4648: #if (!$namespace) {
4649: $namespace=$env{'request.state'};
4650: #}
4651: }
4652: $namespace=~s/\//\_/g;
4653: $namespace=~s/\W//g;
4654: if (!$domain) { $domain=$env{'user.domain'}; }
4655: if (!$stuname) { $stuname=$env{'user.name'}; }
4656: if ($domain eq 'public' && $stuname eq 'public') {
4657: $stuname=$ENV{'REMOTE_ADDR'};
4658: }
4659: my $now=time;
4660: my %hash;
4661: my $path=LONCAPA::tempdir();
4662: if (tie(%hash,'GDBM_File',
4663: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4664: &GDBM_WRCREAT(),0640)) {
4665: $hash{"version:$symb"}++;
4666: my $version=$hash{"version:$symb"};
4667: my $allkeys='';
4668: foreach my $key (keys(%$storehash)) {
4669: $allkeys.=$key.':';
4670: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4671: }
4672: $hash{"$version:$symb:timestamp"}=$now;
4673: $allkeys.='timestamp';
4674: $hash{"$version:keys:$symb"}=$allkeys;
4675: if (untie(%hash)) {
4676: return 'ok';
4677: } else {
4678: return "error:$!";
4679: }
4680: } else {
4681: return "error:$!";
4682: }
4683: }
4684:
4685: # -----------------------------------------------------------------Temp Restore
4686:
4687: sub tmprestore {
4688: my ($symb,$namespace,$domain,$stuname) = @_;
4689:
4690: if (!$symb) {
4691: $symb=&symbread();
4692: if (!$symb) { $symb= $env{'request.url'}; }
4693: }
4694: $symb=escape($symb);
4695:
4696: if (!$namespace) { $namespace=$env{'request.state'}; }
4697:
4698: if (!$domain) { $domain=$env{'user.domain'}; }
4699: if (!$stuname) { $stuname=$env{'user.name'}; }
4700: if ($domain eq 'public' && $stuname eq 'public') {
4701: $stuname=$ENV{'REMOTE_ADDR'};
4702: }
4703: my %returnhash;
4704: $namespace=~s/\//\_/g;
4705: $namespace=~s/\W//g;
4706: my %hash;
4707: my $path=LONCAPA::tempdir();
4708: if (tie(%hash,'GDBM_File',
4709: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4710: &GDBM_READER(),0640)) {
4711: my $version=$hash{"version:$symb"};
4712: $returnhash{'version'}=$version;
4713: my $scope;
4714: for ($scope=1;$scope<=$version;$scope++) {
4715: my $vkeys=$hash{"$scope:keys:$symb"};
4716: my @keys=split(/:/,$vkeys);
4717: my $key;
4718: $returnhash{"$scope:keys"}=$vkeys;
4719: foreach $key (@keys) {
4720: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4721: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4722: }
4723: }
4724: if (!(untie(%hash))) {
4725: return "error:$!";
4726: }
4727: } else {
4728: return "error:$!";
4729: }
4730: return %returnhash;
4731: }
4732:
4733: # ----------------------------------------------------------------------- Store
4734:
4735: sub store {
4736: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4737: my $home='';
4738:
4739: if ($stuname) { $home=&homeserver($stuname,$domain); }
4740:
4741: $symb=&symbclean($symb);
4742: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4743:
4744: if (!$domain) { $domain=$env{'user.domain'}; }
4745: if (!$stuname) { $stuname=$env{'user.name'}; }
4746:
4747: &devalidate($symb,$stuname,$domain);
4748:
4749: $symb=escape($symb);
4750: if (!$namespace) {
4751: unless ($namespace=$env{'request.course.id'}) {
4752: return '';
4753: }
4754: }
4755: if (!$home) { $home=$env{'user.home'}; }
4756:
4757: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4758: $$storehash{'host'}=$perlvar{'lonHostID'};
4759:
4760: my $namevalue='';
4761: foreach my $key (keys(%$storehash)) {
4762: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4763: }
4764: $namevalue=~s/\&$//;
4765: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4766: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4767: }
4768:
4769: # -------------------------------------------------------------- Critical Store
4770:
4771: sub cstore {
4772: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4773: my $home='';
4774:
4775: if ($stuname) { $home=&homeserver($stuname,$domain); }
4776:
4777: $symb=&symbclean($symb);
4778: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4779:
4780: if (!$domain) { $domain=$env{'user.domain'}; }
4781: if (!$stuname) { $stuname=$env{'user.name'}; }
4782:
4783: &devalidate($symb,$stuname,$domain);
4784:
4785: $symb=escape($symb);
4786: if (!$namespace) {
4787: unless ($namespace=$env{'request.course.id'}) {
4788: return '';
4789: }
4790: }
4791: if (!$home) { $home=$env{'user.home'}; }
4792:
4793: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4794: $$storehash{'host'}=$perlvar{'lonHostID'};
4795:
4796: my $namevalue='';
4797: foreach my $key (keys(%$storehash)) {
4798: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4799: }
4800: $namevalue=~s/\&$//;
4801: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4802: return critical
4803: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4804: }
4805:
4806: # --------------------------------------------------------------------- Restore
4807:
4808: sub restore {
4809: my ($symb,$namespace,$domain,$stuname) = @_;
4810: my $home='';
4811:
4812: if ($stuname) { $home=&homeserver($stuname,$domain); }
4813:
4814: if (!$symb) {
4815: unless ($symb=escape(&symbread())) { return ''; }
4816: } else {
4817: $symb=&escape(&symbclean($symb));
4818: }
4819: if (!$namespace) {
4820: unless ($namespace=$env{'request.course.id'}) {
4821: return '';
4822: }
4823: }
4824: if (!$domain) { $domain=$env{'user.domain'}; }
4825: if (!$stuname) { $stuname=$env{'user.name'}; }
4826: if (!$home) { $home=$env{'user.home'}; }
4827: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4828:
4829: my %returnhash=();
4830: foreach my $line (split(/\&/,$answer)) {
4831: my ($name,$value)=split(/\=/,$line);
4832: $returnhash{&unescape($name)}=&thaw_unescape($value);
4833: }
4834: my $version;
4835: for ($version=1;$version<=$returnhash{'version'};$version++) {
4836: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4837: $returnhash{$item}=$returnhash{$version.':'.$item};
4838: }
4839: }
4840: return %returnhash;
4841: }
4842:
4843: # ---------------------------------------------------------- Course Description
4844: #
4845: #
4846:
4847: sub coursedescription {
4848: my ($courseid,$args)=@_;
4849: $courseid=~s/^\///;
4850: $courseid=~s/\_/\//g;
4851: my ($cdomain,$cnum)=split(/\//,$courseid);
4852: my $chome=&homeserver($cnum,$cdomain);
4853: my $normalid=$cdomain.'_'.$cnum;
4854: # need to always cache even if we get errors otherwise we keep
4855: # trying and trying and trying to get the course description.
4856: my %envhash=();
4857: my %returnhash=();
4858:
4859: my $expiretime=600;
4860: if ($env{'request.course.id'} eq $normalid) {
4861: $expiretime=120;
4862: }
4863:
4864: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4865: if (!$args->{'freshen_cache'}
4866: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4867: foreach my $key (keys(%env)) {
4868: next if ($key !~ /^\Q$prefix\E(.*)/);
4869: my ($setting) = $1;
4870: $returnhash{$setting} = $env{$key};
4871: }
4872: return %returnhash;
4873: }
4874:
4875: # get the data again
4876:
4877: if (!$args->{'one_time'}) {
4878: $envhash{'course.'.$normalid.'.last_cache'}=time;
4879: }
4880:
4881: if ($chome ne 'no_host') {
4882: %returnhash=&dump('environment',$cdomain,$cnum);
4883: if (!exists($returnhash{'con_lost'})) {
4884: my $username = $env{'user.name'}; # Defult username
4885: if(defined $args->{'user'}) {
4886: $username = $args->{'user'};
4887: }
4888: $returnhash{'home'}= $chome;
4889: $returnhash{'domain'} = $cdomain;
4890: $returnhash{'num'} = $cnum;
4891: if (!defined($returnhash{'type'})) {
4892: $returnhash{'type'} = 'Course';
4893: }
4894: while (my ($name,$value) = each %returnhash) {
4895: $envhash{'course.'.$normalid.'.'.$name}=$value;
4896: }
4897: $returnhash{'url'}=&clutter($returnhash{'url'});
4898: $returnhash{'fn'}=LONCAPA::tempdir() .
4899: $username.'_'.$cdomain.'_'.$cnum;
4900: $envhash{'course.'.$normalid.'.home'}=$chome;
4901: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4902: $envhash{'course.'.$normalid.'.num'}=$cnum;
4903: }
4904: }
4905: if (!$args->{'one_time'}) {
4906: &appenv(\%envhash);
4907: }
4908: return %returnhash;
4909: }
4910:
4911: sub update_released_required {
4912: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4913: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4914: $cid = $env{'request.course.id'};
4915: $cdom = $env{'course.'.$cid.'.domain'};
4916: $cnum = $env{'course.'.$cid.'.num'};
4917: $chome = $env{'course.'.$cid.'.home'};
4918: }
4919: if ($needsrelease) {
4920: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4921: my $needsupdate;
4922: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4923: $needsupdate = 1;
4924: } else {
4925: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4926: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4927: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4928: $needsupdate = 1;
4929: }
4930: }
4931: if ($needsupdate) {
4932: my %needshash = (
4933: 'internal.releaserequired' => $needsrelease,
4934: );
4935: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4936: if ($putresult eq 'ok') {
4937: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4938: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4939: if (ref($crsinfo{$cid}) eq 'HASH') {
4940: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4941: &courseidput($cdom,\%crsinfo,$chome,'notime');
4942: }
4943: }
4944: }
4945: }
4946: return;
4947: }
4948:
4949: # -------------------------------------------------See if a user is privileged
4950:
4951: sub privileged {
4952: my ($username,$domain)=@_;
4953:
4954: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4955: my $now = time;
4956:
4957: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4958: my ($trole, $tend, $tstart) = split(/_/, $role);
4959: if (($trole eq 'dc') || ($trole eq 'su')) {
4960: return 1 unless ($tend && $tend < $now)
4961: or ($tstart && $tstart > $now);
4962: }
4963: }
4964:
4965: return 0;
4966: }
4967:
4968: # -------------------------------------------------------- Get user privileges
4969:
4970: sub rolesinit {
4971: my ($domain, $username) = @_;
4972: my %userroles = ('user.login.time' => time);
4973: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4974:
4975: # firstaccess and timerinterval are related to timed maps/resources.
4976: # also, blocking can be triggered by an activating timer
4977: # it's saved in the user's %env.
4978: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4979: my %timerinterval = &dump('timerinterval', $domain, $username);
4980: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4981: %timerintchk, %timerintenv);
4982:
4983: foreach my $key (keys(%firstaccess)) {
4984: my ($cid, $rest) = split(/\0/, $key);
4985: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4986: }
4987:
4988: foreach my $key (keys(%timerinterval)) {
4989: my ($cid,$rest) = split(/\0/,$key);
4990: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4991: }
4992:
4993: my %allroles=();
4994: my %allgroups=();
4995:
4996: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4997: my $role = $rolesdump{$area};
4998: $area =~ s/\_\w\w$//;
4999:
5000: my ($trole, $tend, $tstart, $group_privs);
5001:
5002: if ($role =~ /^cr/) {
5003: # Custom role, defined by a user
5004: # e.g., user.role.cr/msu/smith/mynewrole
5005: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5006: $trole = $1;
5007: ($tend, $tstart) = split('_', $2);
5008: } else {
5009: $trole = $role;
5010: }
5011: } elsif ($role =~ m|^gr/|) {
5012: # Role of member in a group, defined within a course/community
5013: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5014: ($trole, $tend, $tstart) = split(/_/, $role);
5015: next if $tstart eq '-1';
5016: ($trole, $group_privs) = split(/\//, $trole);
5017: $group_privs = &unescape($group_privs);
5018: } else {
5019: # Just a normal role, defined in roles.tab
5020: ($trole, $tend, $tstart) = split(/_/,$role);
5021: }
5022:
5023: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5024: $username);
5025: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5026:
5027: # role expired or not available yet?
5028: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5029: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5030:
5031: next if $area eq '' or $trole eq '';
5032:
5033: my $spec = "$trole.$area";
5034: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5035:
5036: if ($trole =~ /^cr\//) {
5037: # Custom role, defined by a user
5038: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5039: } elsif ($trole eq 'gr') {
5040: # Role of a member in a group, defined within a course/community
5041: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5042: next;
5043: } else {
5044: # Normal role, defined in roles.tab
5045: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5046: }
5047:
5048: my $cid = $tdomain.'_'.$trest;
5049: unless ($firstaccchk{$cid}) {
5050: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5051: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5052: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5053: $coursetimerstarts{$cid}{$item};
5054: }
5055: }
5056: $firstaccchk{$cid} = 1;
5057: }
5058: unless ($timerintchk{$cid}) {
5059: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5060: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5061: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5062: $coursetimerintervals{$cid}{$item};
5063: }
5064: }
5065: $timerintchk{$cid} = 1;
5066: }
5067: }
5068:
5069: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5070: \%allroles, \%allgroups);
5071: $env{'user.adv'} = $userroles{'user.adv'};
5072:
5073: return (\%userroles,\%firstaccenv,\%timerintenv);
5074: }
5075:
5076: sub set_arearole {
5077: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5078: unless ($nolog) {
5079: # log the associated role with the area
5080: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5081: }
5082: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5083: }
5084:
5085: sub custom_roleprivs {
5086: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5087: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5088: my $homsvr=homeserver($rauthor,$rdomain);
5089: if (&hostname($homsvr) ne '') {
5090: my ($rdummy,$roledef)=
5091: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5092: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5093: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5094: if (defined($syspriv)) {
5095: if ($trest =~ /^$match_community$/) {
5096: $syspriv =~ s/bre\&S//;
5097: }
5098: $$allroles{'cm./'}.=':'.$syspriv;
5099: $$allroles{$spec.'./'}.=':'.$syspriv;
5100: }
5101: if ($tdomain ne '') {
5102: if (defined($dompriv)) {
5103: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5104: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5105: }
5106: if (($trest ne '') && (defined($coursepriv))) {
5107: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5108: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5109: }
5110: }
5111: }
5112: }
5113: }
5114:
5115: sub group_roleprivs {
5116: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5117: my $access = 1;
5118: my $now = time;
5119: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5120: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5121: if ($access) {
5122: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5123: $$allgroups{$course}{$group} .=':'.$group_privs;
5124: }
5125: }
5126:
5127: sub standard_roleprivs {
5128: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5129: if (defined($pr{$trole.':s'})) {
5130: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5131: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5132: }
5133: if ($tdomain ne '') {
5134: if (defined($pr{$trole.':d'})) {
5135: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5136: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5137: }
5138: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5139: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5140: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5141: }
5142: }
5143: }
5144:
5145: sub set_userprivs {
5146: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5147: my $author=0;
5148: my $adv=0;
5149: my %grouproles = ();
5150: if (keys(%{$allgroups}) > 0) {
5151: my @groupkeys;
5152: foreach my $role (keys(%{$allroles})) {
5153: push(@groupkeys,$role);
5154: }
5155: if (ref($groups_roles) eq 'HASH') {
5156: foreach my $key (keys(%{$groups_roles})) {
5157: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5158: push(@groupkeys,$key);
5159: }
5160: }
5161: }
5162: if (@groupkeys > 0) {
5163: foreach my $role (@groupkeys) {
5164: my ($trole,$area,$sec,$extendedarea);
5165: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5166: $trole = $1;
5167: $area = $2;
5168: $sec = $3;
5169: $extendedarea = $area.$sec;
5170: if (exists($$allgroups{$area})) {
5171: foreach my $group (keys(%{$$allgroups{$area}})) {
5172: my $spec = $trole.'.'.$extendedarea;
5173: $grouproles{$spec.'.'.$area.'/'.$group} =
5174: $$allgroups{$area}{$group};
5175: }
5176: }
5177: }
5178: }
5179: }
5180: }
5181: foreach my $group (keys(%grouproles)) {
5182: $$allroles{$group} = $grouproles{$group};
5183: }
5184: foreach my $role (keys(%{$allroles})) {
5185: my %thesepriv;
5186: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5187: foreach my $item (split(/:/,$$allroles{$role})) {
5188: if ($item ne '') {
5189: my ($privilege,$restrictions)=split(/&/,$item);
5190: if ($restrictions eq '') {
5191: $thesepriv{$privilege}='F';
5192: } elsif ($thesepriv{$privilege} ne 'F') {
5193: $thesepriv{$privilege}.=$restrictions;
5194: }
5195: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5196: }
5197: }
5198: my $thesestr='';
5199: foreach my $priv (sort(keys(%thesepriv))) {
5200: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5201: }
5202: $userroles->{'user.priv.'.$role} = $thesestr;
5203: }
5204: return ($author,$adv);
5205: }
5206:
5207: sub role_status {
5208: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5209: my @pwhere = ();
5210: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5211: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5212: unless (!defined($$role) || $$role eq '') {
5213: $$where=join('.',@pwhere);
5214: $$trolecode=$$role.'.'.$$where;
5215: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5216: $$tstatus='is';
5217: if ($$tstart && $$tstart>$update) {
5218: $$tstatus='future';
5219: if ($$tstart<$now) {
5220: if ($$tstart && $$tstart>$refresh) {
5221: if (($$where ne '') && ($$role ne '')) {
5222: my (%allroles,%allgroups,$group_privs,
5223: %groups_roles,@rolecodes);
5224: my %userroles = (
5225: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5226: );
5227: @rolecodes = ('cm');
5228: my $spec=$$role.'.'.$$where;
5229: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5230: if ($$role =~ /^cr\//) {
5231: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5232: push(@rolecodes,'cr');
5233: } elsif ($$role eq 'gr') {
5234: push(@rolecodes,$$role);
5235: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5236: $env{'user.name'});
5237: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5238: (undef,my $group_privs) = split(/\//,$trole);
5239: $group_privs = &unescape($group_privs);
5240: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5241: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5242: &get_groups_roles($tdomain,$trest,
5243: \%course_roles,\@rolecodes,
5244: \%groups_roles);
5245: } else {
5246: push(@rolecodes,$$role);
5247: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5248: }
5249: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5250: &appenv(\%userroles,\@rolecodes);
5251: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5252: }
5253: }
5254: $$tstatus = 'is';
5255: }
5256: }
5257: if ($$tend) {
5258: if ($$tend<$update) {
5259: $$tstatus='expired';
5260: } elsif ($$tend<$now) {
5261: $$tstatus='will_not';
5262: }
5263: }
5264: }
5265: }
5266: }
5267:
5268: sub get_groups_roles {
5269: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5270: return unless((ref($cdom_courseroles) eq 'HASH') &&
5271: (ref($rolecodes) eq 'ARRAY') &&
5272: (ref($groups_roles) eq 'HASH'));
5273: if (keys(%{$cdom_courseroles}) > 0) {
5274: my ($cnum) = ($rest =~ /^($match_courseid)/);
5275: if ($cdom ne '' && $cnum ne '') {
5276: foreach my $key (keys(%{$cdom_courseroles})) {
5277: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5278: my $crsrole = $1;
5279: my $crssec = $2;
5280: if ($crsrole =~ /^cr/) {
5281: unless (grep(/^cr$/,@{$rolecodes})) {
5282: push(@{$rolecodes},'cr');
5283: }
5284: } else {
5285: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5286: push(@{$rolecodes},$crsrole);
5287: }
5288: }
5289: my $rolekey = "$crsrole./$cdom/$cnum";
5290: if ($crssec ne '') {
5291: $rolekey .= "/$crssec";
5292: }
5293: $rolekey .= './';
5294: $groups_roles->{$rolekey} = $rolecodes;
5295: }
5296: }
5297: }
5298: }
5299: return;
5300: }
5301:
5302: sub delete_env_groupprivs {
5303: my ($where,$courseroles,$possroles) = @_;
5304: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5305: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5306: unless (ref($courseroles->{$udom}) eq 'HASH') {
5307: %{$courseroles->{$udom}} =
5308: &get_my_roles('','','userroles',['active'],
5309: $possroles,[$udom],1);
5310: }
5311: if (ref($courseroles->{$udom}) eq 'HASH') {
5312: foreach my $item (keys(%{$courseroles->{$udom}})) {
5313: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5314: my $area = '/'.$cdom.'/'.$cnum;
5315: my $privkey = "user.priv.$crsrole.$area";
5316: if ($crssec ne '') {
5317: $privkey .= '/'.$crssec;
5318: }
5319: $privkey .= ".$area/$group";
5320: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5321: }
5322: }
5323: return;
5324: }
5325:
5326: sub check_adhoc_privs {
5327: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5328: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5329: my $setprivs;
5330: if ($env{$cckey}) {
5331: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5332: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5333: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5334: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5335: $setprivs = 1;
5336: }
5337: } else {
5338: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5339: $setprivs = 1;
5340: }
5341: return $setprivs;
5342: }
5343:
5344: sub set_adhoc_privileges {
5345: # role can be cc or ca
5346: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5347: my $area = '/'.$dcdom.'/'.$pickedcourse;
5348: my $spec = $role.'.'.$area;
5349: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5350: $env{'user.name'},1);
5351: my %ccrole = ();
5352: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5353: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5354: &appenv(\%userroles,[$role,'cm']);
5355: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5356: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5357: &appenv( {'request.role' => $spec,
5358: 'request.role.domain' => $dcdom,
5359: 'request.course.sec' => ''
5360: }
5361: );
5362: my $tadv=0;
5363: if (&allowed('adv') eq 'F') { $tadv=1; }
5364: &appenv({'request.role.adv' => $tadv});
5365: }
5366: }
5367:
5368: # --------------------------------------------------------------- get interface
5369:
5370: sub get {
5371: my ($namespace,$storearr,$udomain,$uname)=@_;
5372: my $items='';
5373: foreach my $item (@$storearr) {
5374: $items.=&escape($item).'&';
5375: }
5376: $items=~s/\&$//;
5377: if (!$udomain) { $udomain=$env{'user.domain'}; }
5378: if (!$uname) { $uname=$env{'user.name'}; }
5379: my $uhome=&homeserver($uname,$udomain);
5380:
5381: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5382: my @pairs=split(/\&/,$rep);
5383: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5384: return @pairs;
5385: }
5386: my %returnhash=();
5387: my $i=0;
5388: foreach my $item (@$storearr) {
5389: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5390: $i++;
5391: }
5392: return %returnhash;
5393: }
5394:
5395: # --------------------------------------------------------------- del interface
5396:
5397: sub del {
5398: my ($namespace,$storearr,$udomain,$uname)=@_;
5399: my $items='';
5400: foreach my $item (@$storearr) {
5401: $items.=&escape($item).'&';
5402: }
5403:
5404: $items=~s/\&$//;
5405: if (!$udomain) { $udomain=$env{'user.domain'}; }
5406: if (!$uname) { $uname=$env{'user.name'}; }
5407: my $uhome=&homeserver($uname,$udomain);
5408: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5409: }
5410:
5411: # -------------------------------------------------------------- dump interface
5412:
5413: sub unserialize {
5414: my ($rep, $escapedkeys) = @_;
5415:
5416: return {} if $rep =~ /^error/;
5417:
5418: my %returnhash=();
5419: foreach my $item (split /\&/, $rep) {
5420: my ($key, $value) = split(/=/, $item, 2);
5421: $key = unescape($key) unless $escapedkeys;
5422: next if $key =~ /^error: 2 /;
5423: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5424: }
5425: #return %returnhash;
5426: return \%returnhash;
5427: }
5428:
5429: # see Lond::dump_with_regexp
5430: # if $escapedkeys hash keys won't get unescaped.
5431: sub dump {
5432: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5433: if (!$udomain) { $udomain=$env{'user.domain'}; }
5434: if (!$uname) { $uname=$env{'user.name'}; }
5435: my $uhome=&homeserver($uname,$udomain);
5436:
5437: my $reply;
5438: if (grep { $_ eq $uhome } current_machine_ids()) {
5439: # user is hosted on this machine
5440: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5441: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5442: return %{unserialize($reply, $escapedkeys)};
5443: }
5444: if ($regexp) {
5445: $regexp=&escape($regexp);
5446: } else {
5447: $regexp='.';
5448: }
5449: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5450: my @pairs=split(/\&/,$rep);
5451: my %returnhash=();
5452: if (!($rep =~ /^error/ )) {
5453: foreach my $item (@pairs) {
5454: my ($key,$value)=split(/=/,$item,2);
5455: $key = unescape($key) unless $escapedkeys;
5456: #$key = &unescape($key);
5457: next if ($key =~ /^error: 2 /);
5458: $returnhash{$key}=&thaw_unescape($value);
5459: }
5460: }
5461: return %returnhash;
5462: }
5463:
5464:
5465: # --------------------------------------------------------- dumpstore interface
5466:
5467: sub dumpstore {
5468: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5469: # same as dump but keys must be escaped. They may contain colon separated
5470: # lists of values that may themself contain colons (e.g. symbs).
5471: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5472: }
5473:
5474: # -------------------------------------------------------------- keys interface
5475:
5476: sub getkeys {
5477: my ($namespace,$udomain,$uname)=@_;
5478: if (!$udomain) { $udomain=$env{'user.domain'}; }
5479: if (!$uname) { $uname=$env{'user.name'}; }
5480: my $uhome=&homeserver($uname,$udomain);
5481: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5482: my @keyarray=();
5483: foreach my $key (split(/\&/,$rep)) {
5484: next if ($key =~ /^error: 2 /);
5485: push(@keyarray,&unescape($key));
5486: }
5487: return @keyarray;
5488: }
5489:
5490: # --------------------------------------------------------------- currentdump
5491: sub currentdump {
5492: my ($courseid,$sdom,$sname)=@_;
5493: $courseid = $env{'request.course.id'} if (! defined($courseid));
5494: $sdom = $env{'user.domain'} if (! defined($sdom));
5495: $sname = $env{'user.name'} if (! defined($sname));
5496: my $uhome = &homeserver($sname,$sdom);
5497: my $rep;
5498:
5499: if (grep { $_ eq $uhome } current_machine_ids()) {
5500: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5501: $courseid)));
5502: } else {
5503: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5504: }
5505:
5506: return if ($rep =~ /^(error:|no_such_host)/);
5507: #
5508: my %returnhash=();
5509: #
5510: if ($rep eq "unknown_cmd") {
5511: # an old lond will not know currentdump
5512: # Do a dump and make it look like a currentdump
5513: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5514: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5515: my %hash = @tmp;
5516: @tmp=();
5517: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5518: } else {
5519: my @pairs=split(/\&/,$rep);
5520: foreach my $pair (@pairs) {
5521: my ($key,$value)=split(/=/,$pair,2);
5522: my ($symb,$param) = split(/:/,$key);
5523: $returnhash{&unescape($symb)}->{&unescape($param)} =
5524: &thaw_unescape($value);
5525: }
5526: }
5527: return %returnhash;
5528: }
5529:
5530: sub convert_dump_to_currentdump{
5531: my %hash = %{shift()};
5532: my %returnhash;
5533: # Code ripped from lond, essentially. The only difference
5534: # here is the unescaping done by lonnet::dump(). Conceivably
5535: # we might run in to problems with parameter names =~ /^v\./
5536: while (my ($key,$value) = each(%hash)) {
5537: my ($v,$symb,$param) = split(/:/,$key);
5538: $symb = &unescape($symb);
5539: $param = &unescape($param);
5540: next if ($v eq 'version' || $symb eq 'keys');
5541: next if (exists($returnhash{$symb}) &&
5542: exists($returnhash{$symb}->{$param}) &&
5543: $returnhash{$symb}->{'v.'.$param} > $v);
5544: $returnhash{$symb}->{$param}=$value;
5545: $returnhash{$symb}->{'v.'.$param}=$v;
5546: }
5547: #
5548: # Remove all of the keys in the hashes which keep track of
5549: # the version of the parameter.
5550: while (my ($symb,$param_hash) = each(%returnhash)) {
5551: # use a foreach because we are going to delete from the hash.
5552: foreach my $key (keys(%$param_hash)) {
5553: delete($param_hash->{$key}) if ($key =~ /^v\./);
5554: }
5555: }
5556: return \%returnhash;
5557: }
5558:
5559: # ------------------------------------------------------ critical inc interface
5560:
5561: sub cinc {
5562: return &inc(@_,'critical');
5563: }
5564:
5565: # --------------------------------------------------------------- inc interface
5566:
5567: sub inc {
5568: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5569: if (!$udomain) { $udomain=$env{'user.domain'}; }
5570: if (!$uname) { $uname=$env{'user.name'}; }
5571: my $uhome=&homeserver($uname,$udomain);
5572: my $items='';
5573: if (! ref($store)) {
5574: # got a single value, so use that instead
5575: $items = &escape($store).'=&';
5576: } elsif (ref($store) eq 'SCALAR') {
5577: $items = &escape($$store).'=&';
5578: } elsif (ref($store) eq 'ARRAY') {
5579: $items = join('=&',map {&escape($_);} @{$store});
5580: } elsif (ref($store) eq 'HASH') {
5581: while (my($key,$value) = each(%{$store})) {
5582: $items.= &escape($key).'='.&escape($value).'&';
5583: }
5584: }
5585: $items=~s/\&$//;
5586: if ($critical) {
5587: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5588: } else {
5589: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5590: }
5591: }
5592:
5593: # --------------------------------------------------------------- put interface
5594:
5595: sub put {
5596: my ($namespace,$storehash,$udomain,$uname)=@_;
5597: if (!$udomain) { $udomain=$env{'user.domain'}; }
5598: if (!$uname) { $uname=$env{'user.name'}; }
5599: my $uhome=&homeserver($uname,$udomain);
5600: my $items='';
5601: foreach my $item (keys(%$storehash)) {
5602: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5603: }
5604: $items=~s/\&$//;
5605: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5606: }
5607:
5608: # ------------------------------------------------------------ newput interface
5609:
5610: sub newput {
5611: my ($namespace,$storehash,$udomain,$uname)=@_;
5612: if (!$udomain) { $udomain=$env{'user.domain'}; }
5613: if (!$uname) { $uname=$env{'user.name'}; }
5614: my $uhome=&homeserver($uname,$udomain);
5615: my $items='';
5616: foreach my $key (keys(%$storehash)) {
5617: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5618: }
5619: $items=~s/\&$//;
5620: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5621: }
5622:
5623: # --------------------------------------------------------- putstore interface
5624:
5625: sub putstore {
5626: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5627: if (!$udomain) { $udomain=$env{'user.domain'}; }
5628: if (!$uname) { $uname=$env{'user.name'}; }
5629: my $uhome=&homeserver($uname,$udomain);
5630: my $items='';
5631: foreach my $key (keys(%$storehash)) {
5632: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5633: }
5634: $items=~s/\&$//;
5635: my $esc_symb=&escape($symb);
5636: my $esc_v=&escape($version);
5637: my $reply =
5638: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5639: $uhome);
5640: if ($reply eq 'unknown_cmd') {
5641: # gfall back to way things use to be done
5642: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5643: $uname);
5644: }
5645: return $reply;
5646: }
5647:
5648: sub old_putstore {
5649: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5650: if (!$udomain) { $udomain=$env{'user.domain'}; }
5651: if (!$uname) { $uname=$env{'user.name'}; }
5652: my $uhome=&homeserver($uname,$udomain);
5653: my %newstorehash;
5654: foreach my $item (keys(%$storehash)) {
5655: my $key = $version.':'.&escape($symb).':'.$item;
5656: $newstorehash{$key} = $storehash->{$item};
5657: }
5658: my $items='';
5659: my %allitems = ();
5660: foreach my $item (keys(%newstorehash)) {
5661: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5662: my $key = $1.':keys:'.$2;
5663: $allitems{$key} .= $3.':';
5664: }
5665: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5666: }
5667: foreach my $item (keys(%allitems)) {
5668: $allitems{$item} =~ s/\:$//;
5669: $items.= $item.'='.$allitems{$item}.'&';
5670: }
5671: $items=~s/\&$//;
5672: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5673: }
5674:
5675: # ------------------------------------------------------ critical put interface
5676:
5677: sub cput {
5678: my ($namespace,$storehash,$udomain,$uname)=@_;
5679: if (!$udomain) { $udomain=$env{'user.domain'}; }
5680: if (!$uname) { $uname=$env{'user.name'}; }
5681: my $uhome=&homeserver($uname,$udomain);
5682: my $items='';
5683: foreach my $item (keys(%$storehash)) {
5684: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5685: }
5686: $items=~s/\&$//;
5687: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5688: }
5689:
5690: # -------------------------------------------------------------- eget interface
5691:
5692: sub eget {
5693: my ($namespace,$storearr,$udomain,$uname)=@_;
5694: my $items='';
5695: foreach my $item (@$storearr) {
5696: $items.=&escape($item).'&';
5697: }
5698: $items=~s/\&$//;
5699: if (!$udomain) { $udomain=$env{'user.domain'}; }
5700: if (!$uname) { $uname=$env{'user.name'}; }
5701: my $uhome=&homeserver($uname,$udomain);
5702: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5703: my @pairs=split(/\&/,$rep);
5704: my %returnhash=();
5705: my $i=0;
5706: foreach my $item (@$storearr) {
5707: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5708: $i++;
5709: }
5710: return %returnhash;
5711: }
5712:
5713: # ------------------------------------------------------------ tmpput interface
5714: sub tmpput {
5715: my ($storehash,$server,$context)=@_;
5716: my $items='';
5717: foreach my $item (keys(%$storehash)) {
5718: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5719: }
5720: $items=~s/\&$//;
5721: if (defined($context)) {
5722: $items .= ':'.&escape($context);
5723: }
5724: return &reply("tmpput:$items",$server);
5725: }
5726:
5727: # ------------------------------------------------------------ tmpget interface
5728: sub tmpget {
5729: my ($token,$server)=@_;
5730: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5731: my $rep=&reply("tmpget:$token",$server);
5732: my %returnhash;
5733: foreach my $item (split(/\&/,$rep)) {
5734: my ($key,$value)=split(/=/,$item);
5735: next if ($key =~ /^error: 2 /);
5736: $returnhash{&unescape($key)}=&thaw_unescape($value);
5737: }
5738: return %returnhash;
5739: }
5740:
5741: # ------------------------------------------------------------ tmpdel interface
5742: sub tmpdel {
5743: my ($token,$server)=@_;
5744: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5745: return &reply("tmpdel:$token",$server);
5746: }
5747:
5748: # ------------------------------------------------------------ get_timebased_id
5749:
5750: sub get_timebased_id {
5751: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
5752: $maxtries) = @_;
5753: my ($newid,$error,$dellock);
5754: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
5755: return ('','ok','invalid call to get suffix');
5756: }
5757:
5758: # set defaults for any optional args for which values were not supplied
5759: if ($who eq '') {
5760: $who = $env{'user.name'}.':'.$env{'user.domain'};
5761: }
5762: if (!$locktries) {
5763: $locktries = 3;
5764: }
5765: if (!$maxtries) {
5766: $maxtries = 10;
5767: }
5768:
5769: if (($cdom eq '') || ($cnum eq '')) {
5770: if ($env{'request.course.id'}) {
5771: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5772: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5773: }
5774: if (($cdom eq '') || ($cnum eq '')) {
5775: return ('','ok','call to get suffix not in course context');
5776: }
5777: }
5778:
5779: # construct locking item
5780: my $lockhash = {
5781: $prefix."\0".'locked_'.$keyid => $who,
5782: };
5783: my $tries = 0;
5784:
5785: # attempt to get lock on nohist_$namespace file
5786: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5787: while (($gotlock ne 'ok') && $tries <$locktries) {
5788: $tries ++;
5789: sleep 1;
5790: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5791: }
5792:
5793: # attempt to get unique identifier, based on current timestamp
5794: if ($gotlock eq 'ok') {
5795: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
5796: my $id = time;
5797: $newid = $id;
5798: my $idtries = 0;
5799: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
5800: if ($idtype eq 'concat') {
5801: $newid = $id.$idtries;
5802: } else {
5803: $newid ++;
5804: }
5805: $idtries ++;
5806: }
5807: if (!exists($inuse{$prefix."\0".$newid})) {
5808: my %new_item = (
5809: $prefix."\0".$newid => $who,
5810: );
5811: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
5812: $cdom,$cnum);
5813: if ($putresult ne 'ok') {
5814: undef($newid);
5815: $error = 'error saving new item: '.$putresult;
5816: }
5817: } else {
5818: $error = ('error: no unique suffix available for the new item ');
5819: }
5820: # remove lock
5821: my @del_lock = ($prefix."\0".'locked_'.$keyid);
5822: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
5823: } else {
5824: $error = "error: could not obtain lockfile\n";
5825: $dellock = 'ok';
5826: }
5827: return ($newid,$dellock,$error);
5828: }
5829:
5830: # -------------------------------------------------- portfolio access checking
5831:
5832: sub portfolio_access {
5833: my ($requrl) = @_;
5834: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5835: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5836: if ($result) {
5837: my %setters;
5838: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5839: my ($startblock,$endblock) =
5840: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5841: if ($startblock && $endblock) {
5842: return 'B';
5843: }
5844: } else {
5845: my ($startblock,$endblock) =
5846: &Apache::loncommon::blockcheck(\%setters,'port');
5847: if ($startblock && $endblock) {
5848: return 'B';
5849: }
5850: }
5851: }
5852: if ($result eq 'ok') {
5853: return 'F';
5854: } elsif ($result =~ /^[^:]+:guest_/) {
5855: return 'A';
5856: }
5857: return '';
5858: }
5859:
5860: sub get_portfolio_access {
5861: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5862:
5863: if (!ref($access_hash)) {
5864: my $current_perms = &get_portfile_permissions($udom,$unum);
5865: my %access_controls = &get_access_controls($current_perms,$group,
5866: $file_name);
5867: $access_hash = $access_controls{$file_name};
5868: }
5869:
5870: my ($public,$guest,@domains,@users,@courses,@groups);
5871: my $now = time;
5872: if (ref($access_hash) eq 'HASH') {
5873: foreach my $key (keys(%{$access_hash})) {
5874: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5875: if ($start > $now) {
5876: next;
5877: }
5878: if ($end && $end<$now) {
5879: next;
5880: }
5881: if ($scope eq 'public') {
5882: $public = $key;
5883: last;
5884: } elsif ($scope eq 'guest') {
5885: $guest = $key;
5886: } elsif ($scope eq 'domains') {
5887: push(@domains,$key);
5888: } elsif ($scope eq 'users') {
5889: push(@users,$key);
5890: } elsif ($scope eq 'course') {
5891: push(@courses,$key);
5892: } elsif ($scope eq 'group') {
5893: push(@groups,$key);
5894: }
5895: }
5896: if ($public) {
5897: return 'ok';
5898: }
5899: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5900: if ($guest) {
5901: return $guest;
5902: }
5903: } else {
5904: if (@domains > 0) {
5905: foreach my $domkey (@domains) {
5906: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5907: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5908: return 'ok';
5909: }
5910: }
5911: }
5912: }
5913: if (@users > 0) {
5914: foreach my $userkey (@users) {
5915: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5916: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5917: if (ref($item) eq 'HASH') {
5918: if (($item->{'uname'} eq $env{'user.name'}) &&
5919: ($item->{'udom'} eq $env{'user.domain'})) {
5920: return 'ok';
5921: }
5922: }
5923: }
5924: }
5925: }
5926: }
5927: my %roleshash;
5928: my @courses_and_groups = @courses;
5929: push(@courses_and_groups,@groups);
5930: if (@courses_and_groups > 0) {
5931: my (%allgroups,%allroles);
5932: my ($start,$end,$role,$sec,$group);
5933: foreach my $envkey (%env) {
5934: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5935: my $cid = $2.'_'.$3;
5936: if ($1 eq 'gr') {
5937: $group = $4;
5938: $allgroups{$cid}{$group} = $env{$envkey};
5939: } else {
5940: if ($4 eq '') {
5941: $sec = 'none';
5942: } else {
5943: $sec = $4;
5944: }
5945: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5946: }
5947: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5948: my $cid = $2.'_'.$3;
5949: if ($4 eq '') {
5950: $sec = 'none';
5951: } else {
5952: $sec = $4;
5953: }
5954: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5955: }
5956: }
5957: if (keys(%allroles) == 0) {
5958: return;
5959: }
5960: foreach my $key (@courses_and_groups) {
5961: my %content = %{$$access_hash{$key}};
5962: my $cnum = $content{'number'};
5963: my $cdom = $content{'domain'};
5964: my $cid = $cdom.'_'.$cnum;
5965: if (!exists($allroles{$cid})) {
5966: next;
5967: }
5968: foreach my $role_id (keys(%{$content{'roles'}})) {
5969: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5970: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5971: my @status = @{$content{'roles'}{$role_id}{'access'}};
5972: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5973: foreach my $role (keys(%{$allroles{$cid}})) {
5974: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5975: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5976: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5977: if (grep/^all$/,@sections) {
5978: return 'ok';
5979: } else {
5980: if (grep/^$sec$/,@sections) {
5981: return 'ok';
5982: }
5983: }
5984: }
5985: }
5986: if (keys(%{$allgroups{$cid}}) == 0) {
5987: if (grep/^none$/,@groups) {
5988: return 'ok';
5989: }
5990: } else {
5991: if (grep/^all$/,@groups) {
5992: return 'ok';
5993: }
5994: foreach my $group (keys(%{$allgroups{$cid}})) {
5995: if (grep/^$group$/,@groups) {
5996: return 'ok';
5997: }
5998: }
5999: }
6000: }
6001: }
6002: }
6003: }
6004: }
6005: if ($guest) {
6006: return $guest;
6007: }
6008: }
6009: }
6010: return;
6011: }
6012:
6013: sub course_group_datechecker {
6014: my ($dates,$now,$status) = @_;
6015: my ($start,$end) = split(/\./,$dates);
6016: if (!$start && !$end) {
6017: return 'ok';
6018: }
6019: if (grep/^active$/,@{$status}) {
6020: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6021: return 'ok';
6022: }
6023: }
6024: if (grep/^previous$/,@{$status}) {
6025: if ($end > $now ) {
6026: return 'ok';
6027: }
6028: }
6029: if (grep/^future$/,@{$status}) {
6030: if ($start > $now) {
6031: return 'ok';
6032: }
6033: }
6034: return;
6035: }
6036:
6037: sub parse_portfolio_url {
6038: my ($url) = @_;
6039:
6040: my ($type,$udom,$unum,$group,$file_name);
6041:
6042: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6043: $type = 1;
6044: $udom = $1;
6045: $unum = $2;
6046: $file_name = $3;
6047: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6048: $type = 2;
6049: $udom = $1;
6050: $unum = $2;
6051: $group = $3;
6052: $file_name = $3.'/'.$4;
6053: }
6054: if (wantarray) {
6055: return ($type,$udom,$unum,$file_name,$group);
6056: }
6057: return $type;
6058: }
6059:
6060: sub is_portfolio_url {
6061: my ($url) = @_;
6062: return scalar(&parse_portfolio_url($url));
6063: }
6064:
6065: sub is_portfolio_file {
6066: my ($file) = @_;
6067: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6068: return 1;
6069: }
6070: return;
6071: }
6072:
6073: sub usertools_access {
6074: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6075: my ($access,%tools);
6076: if ($context eq '') {
6077: $context = 'tools';
6078: }
6079: if ($context eq 'requestcourses') {
6080: %tools = (
6081: official => 1,
6082: unofficial => 1,
6083: community => 1,
6084: );
6085: } elsif ($context eq 'requestauthor') {
6086: %tools = (
6087: requestauthor => 1,
6088: );
6089: } else {
6090: %tools = (
6091: aboutme => 1,
6092: blog => 1,
6093: webdav => 1,
6094: portfolio => 1,
6095: );
6096: }
6097: return if (!defined($tools{$tool}));
6098:
6099: if ((!defined($udom)) || (!defined($uname))) {
6100: $udom = $env{'user.domain'};
6101: $uname = $env{'user.name'};
6102: }
6103:
6104: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6105: if ($action ne 'reload') {
6106: if ($context eq 'requestcourses') {
6107: return $env{'environment.canrequest.'.$tool};
6108: } elsif ($context eq 'requestauthor') {
6109: return $env{'environment.canrequest.author'};
6110: } else {
6111: return $env{'environment.availabletools.'.$tool};
6112: }
6113: }
6114: }
6115:
6116: my ($toolstatus,$inststatus,$envkey);
6117: if ($context eq 'requestauthor') {
6118: $envkey = $context;
6119: } else {
6120: $envkey = $context.'.'.$tool;
6121: }
6122:
6123: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6124: ($action ne 'reload')) {
6125: $toolstatus = $env{'environment.'.$envkey};
6126: $inststatus = $env{'environment.inststatus'};
6127: } else {
6128: if (ref($userenvref) eq 'HASH') {
6129: $toolstatus = $userenvref->{$envkey};
6130: $inststatus = $userenvref->{'inststatus'};
6131: } else {
6132: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6133: $toolstatus = $userenv{$envkey};
6134: $inststatus = $userenv{'inststatus'};
6135: }
6136: }
6137:
6138: if ($toolstatus ne '') {
6139: if ($toolstatus) {
6140: $access = 1;
6141: } else {
6142: $access = 0;
6143: }
6144: return $access;
6145: }
6146:
6147: my ($is_adv,%domdef);
6148: if (ref($is_advref) eq 'HASH') {
6149: $is_adv = $is_advref->{'is_adv'};
6150: } else {
6151: $is_adv = &is_advanced_user($udom,$uname);
6152: }
6153: if (ref($domdefref) eq 'HASH') {
6154: %domdef = %{$domdefref};
6155: } else {
6156: %domdef = &get_domain_defaults($udom);
6157: }
6158: if (ref($domdef{$tool}) eq 'HASH') {
6159: if ($is_adv) {
6160: if ($domdef{$tool}{'_LC_adv'} ne '') {
6161: if ($domdef{$tool}{'_LC_adv'}) {
6162: $access = 1;
6163: } else {
6164: $access = 0;
6165: }
6166: return $access;
6167: }
6168: }
6169: if ($inststatus ne '') {
6170: my ($hasaccess,$hasnoaccess);
6171: foreach my $affiliation (split(/:/,$inststatus)) {
6172: if ($domdef{$tool}{$affiliation} ne '') {
6173: if ($domdef{$tool}{$affiliation}) {
6174: $hasaccess = 1;
6175: } else {
6176: $hasnoaccess = 1;
6177: }
6178: }
6179: }
6180: if ($hasaccess || $hasnoaccess) {
6181: if ($hasaccess) {
6182: $access = 1;
6183: } elsif ($hasnoaccess) {
6184: $access = 0;
6185: }
6186: return $access;
6187: }
6188: } else {
6189: if ($domdef{$tool}{'default'} ne '') {
6190: if ($domdef{$tool}{'default'}) {
6191: $access = 1;
6192: } elsif ($domdef{$tool}{'default'} == 0) {
6193: $access = 0;
6194: }
6195: return $access;
6196: }
6197: }
6198: } else {
6199: if (($context eq 'tools') && ($tool ne 'webdav')) {
6200: $access = 1;
6201: } else {
6202: $access = 0;
6203: }
6204: return $access;
6205: }
6206: }
6207:
6208: sub is_course_owner {
6209: my ($cdom,$cnum,$udom,$uname) = @_;
6210: if (($udom eq '') || ($uname eq '')) {
6211: $udom = $env{'user.domain'};
6212: $uname = $env{'user.name'};
6213: }
6214: unless (($udom eq '') || ($uname eq '')) {
6215: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6216: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6217: return 1;
6218: } else {
6219: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6220: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6221: return 1;
6222: }
6223: }
6224: }
6225: }
6226: return;
6227: }
6228:
6229: sub is_advanced_user {
6230: my ($udom,$uname) = @_;
6231: if ($udom ne '' && $uname ne '') {
6232: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6233: if (wantarray) {
6234: return ($env{'user.adv'},$env{'user.author'});
6235: } else {
6236: return $env{'user.adv'};
6237: }
6238: }
6239: }
6240: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6241: my %allroles;
6242: my ($is_adv,$is_author);
6243: foreach my $role (keys(%roleshash)) {
6244: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6245: my $area = '/'.$tdomain.'/'.$trest;
6246: if ($sec ne '') {
6247: $area .= '/'.$sec;
6248: }
6249: if (($area ne '') && ($trole ne '')) {
6250: my $spec=$trole.'.'.$area;
6251: if ($trole =~ /^cr\//) {
6252: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6253: } elsif ($trole ne 'gr') {
6254: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6255: }
6256: if ($trole eq 'au') {
6257: $is_author = 1;
6258: }
6259: }
6260: }
6261: foreach my $role (keys(%allroles)) {
6262: last if ($is_adv);
6263: foreach my $item (split(/:/,$allroles{$role})) {
6264: if ($item ne '') {
6265: my ($privilege,$restrictions)=split(/&/,$item);
6266: if ($privilege eq 'adv') {
6267: $is_adv = 1;
6268: last;
6269: }
6270: }
6271: }
6272: }
6273: if (wantarray) {
6274: return ($is_adv,$is_author);
6275: }
6276: return $is_adv;
6277: }
6278:
6279: sub check_can_request {
6280: my ($dom,$can_request,$request_domains) = @_;
6281: my $canreq = 0;
6282: my ($types,$typename) = &Apache::loncommon::course_types();
6283: my @options = ('approval','validate','autolimit');
6284: my $optregex = join('|',@options);
6285: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6286: foreach my $type (@{$types}) {
6287: if (&usertools_access($env{'user.name'},
6288: $env{'user.domain'},
6289: $type,undef,'requestcourses')) {
6290: $canreq ++;
6291: if (ref($request_domains) eq 'HASH') {
6292: push(@{$request_domains->{$type}},$env{'user.domain'});
6293: }
6294: if ($dom eq $env{'user.domain'}) {
6295: $can_request->{$type} = 1;
6296: }
6297: }
6298: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6299: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6300: if (@curr > 0) {
6301: foreach my $item (@curr) {
6302: if (ref($request_domains) eq 'HASH') {
6303: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6304: if ($otherdom ne '') {
6305: if (ref($request_domains->{$type}) eq 'ARRAY') {
6306: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6307: push(@{$request_domains->{$type}},$otherdom);
6308: }
6309: } else {
6310: push(@{$request_domains->{$type}},$otherdom);
6311: }
6312: }
6313: }
6314: }
6315: unless($dom eq $env{'user.domain'}) {
6316: $canreq ++;
6317: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6318: $can_request->{$type} = 1;
6319: }
6320: }
6321: }
6322: }
6323: }
6324: }
6325: return $canreq;
6326: }
6327:
6328: # ---------------------------------------------- Custom access rule evaluation
6329:
6330: sub customaccess {
6331: my ($priv,$uri)=@_;
6332: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6333: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6334: $udom = &LONCAPA::clean_domain($udom);
6335: $ucrs = &LONCAPA::clean_username($ucrs);
6336: my $access=0;
6337: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6338: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6339: if ($type eq 'user') {
6340: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6341: my ($tdom,$tuname)=split(m{/},$scope);
6342: if ($tdom) {
6343: if ($tdom ne $env{'user.domain'}) { next; }
6344: }
6345: if ($tuname) {
6346: if ($tuname ne $env{'user.name'}) { next; }
6347: }
6348: $access=($effect eq 'allow');
6349: last;
6350: }
6351: } else {
6352: if ($role) {
6353: if ($role ne $urole) { next; }
6354: }
6355: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6356: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6357: if ($tdom) {
6358: if ($tdom ne $udom) { next; }
6359: }
6360: if ($tcrs) {
6361: if ($tcrs ne $ucrs) { next; }
6362: }
6363: if ($tsec) {
6364: if ($tsec ne $usec) { next; }
6365: }
6366: $access=($effect eq 'allow');
6367: last;
6368: }
6369: if ($realm eq '' && $role eq '') {
6370: $access=($effect eq 'allow');
6371: }
6372: }
6373: }
6374: return $access;
6375: }
6376:
6377: # ------------------------------------------------- Check for a user privilege
6378:
6379: sub allowed {
6380: my ($priv,$uri,$symb,$role)=@_;
6381: my $ver_orguri=$uri;
6382: $uri=&deversion($uri);
6383: my $orguri=$uri;
6384: $uri=&declutter($uri);
6385:
6386: if ($priv eq 'evb') {
6387: # Evade communication block restrictions for specified role in a course
6388: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6389: return $1;
6390: } else {
6391: return;
6392: }
6393: }
6394:
6395: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6396: # Free bre access to adm and meta resources
6397: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6398: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6399: && ($priv eq 'bre')) {
6400: return 'F';
6401: }
6402:
6403: # Free bre access to user's own portfolio contents
6404: my ($space,$domain,$name,@dir)=split('/',$uri);
6405: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6406: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6407: my %setters;
6408: my ($startblock,$endblock) =
6409: &Apache::loncommon::blockcheck(\%setters,'port');
6410: if ($startblock && $endblock) {
6411: return 'B';
6412: } else {
6413: return 'F';
6414: }
6415: }
6416:
6417: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6418: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6419: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6420: if (exists($env{'request.course.id'})) {
6421: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6422: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6423: if (($domain eq $cdom) && ($name eq $cnum)) {
6424: my $courseprivid=$env{'request.course.id'};
6425: $courseprivid=~s/\_/\//;
6426: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6427: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6428: return $1;
6429: } else {
6430: if ($env{'request.course.sec'}) {
6431: $courseprivid.='/'.$env{'request.course.sec'};
6432: }
6433: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6434: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6435: return $2;
6436: }
6437: }
6438: }
6439: }
6440: }
6441:
6442: # Free bre to public access
6443:
6444: if ($priv eq 'bre') {
6445: my $copyright=&metadata($uri,'copyright');
6446: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6447: return 'F';
6448: }
6449: if ($copyright eq 'priv') {
6450: $uri=~/([^\/]+)\/([^\/]+)\//;
6451: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6452: return '';
6453: }
6454: }
6455: if ($copyright eq 'domain') {
6456: $uri=~/([^\/]+)\/([^\/]+)\//;
6457: unless (($env{'user.domain'} eq $1) ||
6458: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6459: return '';
6460: }
6461: }
6462: if ($env{'request.role'}=~ /li\.\//) {
6463: # Library role, so allow browsing of resources in this domain.
6464: return 'F';
6465: }
6466: if ($copyright eq 'custom') {
6467: unless (&customaccess($priv,$uri)) { return ''; }
6468: }
6469: }
6470: # Domain coordinator is trying to create a course
6471: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6472: # uri is the requested domain in this case.
6473: # comparison to 'request.role.domain' shows if the user has selected
6474: # a role of dc for the domain in question.
6475: return 'F' if ($uri eq $env{'request.role.domain'});
6476: }
6477:
6478: my $thisallowed='';
6479: my $statecond=0;
6480: my $courseprivid='';
6481:
6482: my $ownaccess;
6483: # Community Coordinator or Assistant Co-author browsing resource space.
6484: if (($priv eq 'bro') && ($env{'user.author'})) {
6485: if ($uri eq '') {
6486: $ownaccess = 1;
6487: } else {
6488: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6489: my $udom = $env{'user.domain'};
6490: my $uname = $env{'user.name'};
6491: if ($uri =~ m{^\Q$udom\E/?$}) {
6492: $ownaccess = 1;
6493: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6494: unless ($uri =~ m{\.\./}) {
6495: $ownaccess = 1;
6496: }
6497: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6498: my $now = time;
6499: if ($uri =~ m{^([^/]+)/?$}) {
6500: my $adom = $1;
6501: foreach my $key (keys(%env)) {
6502: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6503: my ($start,$end) = split('.',$env{$key});
6504: if (($now >= $start) && (!$end || $end < $now)) {
6505: $ownaccess = 1;
6506: last;
6507: }
6508: }
6509: }
6510: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6511: my $adom = $1;
6512: my $aname = $2;
6513: foreach my $role ('ca','aa') {
6514: if ($env{"user.role.$role./$adom/$aname"}) {
6515: my ($start,$end) =
6516: split('.',$env{"user.role.$role./$adom/$aname"});
6517: if (($now >= $start) && (!$end || $end < $now)) {
6518: $ownaccess = 1;
6519: last;
6520: }
6521: }
6522: }
6523: }
6524: }
6525: }
6526: }
6527: }
6528:
6529: # Course
6530:
6531: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6532: unless (($priv eq 'bro') && (!$ownaccess)) {
6533: $thisallowed.=$1;
6534: }
6535: }
6536:
6537: # Domain
6538:
6539: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6540: =~/\Q$priv\E\&([^\:]*)/) {
6541: unless (($priv eq 'bro') && (!$ownaccess)) {
6542: $thisallowed.=$1;
6543: }
6544: }
6545:
6546: # User who is not author or co-author might still be able to edit
6547: # resource of an author in the domain (e.g., if Domain Coordinator).
6548: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6549: (&allowed('mdc',$env{'request.course.id'}))) {
6550: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6551: $thisallowed.=$1;
6552: }
6553: }
6554:
6555: # Course: uri itself is a course
6556: my $courseuri=$uri;
6557: $courseuri=~s/\_(\d)/\/$1/;
6558: $courseuri=~s/^([^\/])/\/$1/;
6559:
6560: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6561: =~/\Q$priv\E\&([^\:]*)/) {
6562: unless (($priv eq 'bro') && (!$ownaccess)) {
6563: $thisallowed.=$1;
6564: }
6565: }
6566:
6567: # URI is an uploaded document for this course, default permissions don't matter
6568: # not allowing 'edit' access (editupload) to uploaded course docs
6569: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6570: $thisallowed='';
6571: my ($match)=&is_on_map($uri);
6572: if ($match) {
6573: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6574: =~/\Q$priv\E\&([^\:]*)/) {
6575: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6576: if (@blockers > 0) {
6577: $thisallowed = 'B';
6578: } else {
6579: $thisallowed.=$1;
6580: }
6581: }
6582: } else {
6583: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6584: if ($refuri) {
6585: if ($refuri =~ m|^/adm/|) {
6586: $thisallowed='F';
6587: } else {
6588: $refuri=&declutter($refuri);
6589: my ($match) = &is_on_map($refuri);
6590: if ($match) {
6591: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6592: if (@blockers > 0) {
6593: $thisallowed = 'B';
6594: } else {
6595: $thisallowed='F';
6596: }
6597: }
6598: }
6599: }
6600: }
6601: }
6602:
6603: if ($priv eq 'bre'
6604: && $thisallowed ne 'F'
6605: && $thisallowed ne '2'
6606: && &is_portfolio_url($uri)) {
6607: $thisallowed = &portfolio_access($uri);
6608: }
6609:
6610: # Full access at system, domain or course-wide level? Exit.
6611: if ($thisallowed=~/F/) {
6612: return 'F';
6613: }
6614:
6615: # If this is generating or modifying users, exit with special codes
6616:
6617: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6618: if (($priv eq 'cca') || ($priv eq 'caa')) {
6619: my ($audom,$auname)=split('/',$uri);
6620: # no author name given, so this just checks on the general right to make a co-author in this domain
6621: unless ($auname) { return $thisallowed; }
6622: # an author name is given, so we are about to actually make a co-author for a certain account
6623: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6624: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6625: ($audom ne $env{'request.role.domain'}))) { return ''; }
6626: }
6627: return $thisallowed;
6628: }
6629: #
6630: # Gathered so far: system, domain and course wide privileges
6631: #
6632: # Course: See if uri or referer is an individual resource that is part of
6633: # the course
6634:
6635: if ($env{'request.course.id'}) {
6636:
6637: $courseprivid=$env{'request.course.id'};
6638: if ($env{'request.course.sec'}) {
6639: $courseprivid.='/'.$env{'request.course.sec'};
6640: }
6641: $courseprivid=~s/\_/\//;
6642: my $checkreferer=1;
6643: my ($match,$cond)=&is_on_map($uri);
6644: if ($match) {
6645: $statecond=$cond;
6646: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6647: =~/\Q$priv\E\&([^\:]*)/) {
6648: my $value = $1;
6649: if ($priv eq 'bre') {
6650: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6651: if (@blockers > 0) {
6652: $thisallowed = 'B';
6653: } else {
6654: $thisallowed.=$value;
6655: }
6656: } else {
6657: $thisallowed.=$value;
6658: }
6659: $checkreferer=0;
6660: }
6661: }
6662:
6663: if ($checkreferer) {
6664: my $refuri=$env{'httpref.'.$orguri};
6665: unless ($refuri) {
6666: foreach my $key (keys(%env)) {
6667: if ($key=~/^httpref\..*\*/) {
6668: my $pattern=$key;
6669: $pattern=~s/^httpref\.\/res\///;
6670: $pattern=~s/\*/\[\^\/\]\+/g;
6671: $pattern=~s/\//\\\//g;
6672: if ($orguri=~/$pattern/) {
6673: $refuri=$env{$key};
6674: }
6675: }
6676: }
6677: }
6678:
6679: if ($refuri) {
6680: $refuri=&declutter($refuri);
6681: my ($match,$cond)=&is_on_map($refuri);
6682: if ($match) {
6683: my $refstatecond=$cond;
6684: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6685: =~/\Q$priv\E\&([^\:]*)/) {
6686: my $value = $1;
6687: if ($priv eq 'bre') {
6688: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6689: if (@blockers > 0) {
6690: $thisallowed = 'B';
6691: } else {
6692: $thisallowed.=$value;
6693: }
6694: } else {
6695: $thisallowed.=$value;
6696: }
6697: $uri=$refuri;
6698: $statecond=$refstatecond;
6699: }
6700: }
6701: }
6702: }
6703: }
6704:
6705: #
6706: # Gathered now: all privileges that could apply, and condition number
6707: #
6708: #
6709: # Full or no access?
6710: #
6711:
6712: if ($thisallowed=~/F/) {
6713: return 'F';
6714: }
6715:
6716: unless ($thisallowed) {
6717: return '';
6718: }
6719:
6720: # Restrictions exist, deal with them
6721: #
6722: # C:according to course preferences
6723: # R:according to resource settings
6724: # L:unless locked
6725: # X:according to user session state
6726: #
6727:
6728: # Possibly locked functionality, check all courses
6729: # Locks might take effect only after 10 minutes cache expiration for other
6730: # courses, and 2 minutes for current course
6731:
6732: my $envkey;
6733: if ($thisallowed=~/L/) {
6734: foreach $envkey (keys(%env)) {
6735: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6736: my $courseid=$2;
6737: my $roleid=$1.'.'.$2;
6738: $courseid=~s/^\///;
6739: my $expiretime=600;
6740: if ($env{'request.role'} eq $roleid) {
6741: $expiretime=120;
6742: }
6743: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6744: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6745: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6746: &coursedescription($courseid,{'freshen_cache' => 1});
6747: }
6748: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6749: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6750: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6751: &log($env{'user.domain'},$env{'user.name'},
6752: $env{'user.home'},
6753: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6754: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6755: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6756: return '';
6757: }
6758: }
6759: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6760: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6761: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6762: &log($env{'user.domain'},$env{'user.name'},
6763: $env{'user.home'},
6764: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6765: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6766: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6767: return '';
6768: }
6769: }
6770: }
6771: }
6772: }
6773:
6774: #
6775: # Rest of the restrictions depend on selected course
6776: #
6777:
6778: unless ($env{'request.course.id'}) {
6779: if ($thisallowed eq 'A') {
6780: return 'A';
6781: } elsif ($thisallowed eq 'B') {
6782: return 'B';
6783: } else {
6784: return '1';
6785: }
6786: }
6787:
6788: #
6789: # Now user is definitely in a course
6790: #
6791:
6792:
6793: # Course preferences
6794:
6795: if ($thisallowed=~/C/) {
6796: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6797: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6798: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6799: =~/\Q$rolecode\E/) {
6800: if (($priv ne 'pch') && ($priv ne 'plc')) {
6801: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6802: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6803: $env{'request.course.id'});
6804: }
6805: return '';
6806: }
6807:
6808: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6809: =~/\Q$unamedom\E/) {
6810: if (($priv ne 'pch') && ($priv ne 'plc')) {
6811: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6812: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6813: $env{'request.course.id'});
6814: }
6815: return '';
6816: }
6817: }
6818:
6819: # Resource preferences
6820:
6821: if ($thisallowed=~/R/) {
6822: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6823: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6824: if (($priv ne 'pch') && ($priv ne 'plc')) {
6825: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6826: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6827: }
6828: return '';
6829: }
6830: }
6831:
6832: # Restricted by state or randomout?
6833:
6834: if ($thisallowed=~/X/) {
6835: if ($env{'acc.randomout'}) {
6836: if (!$symb) { $symb=&symbread($uri,1); }
6837: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6838: return '';
6839: }
6840: }
6841: if (&condval($statecond)) {
6842: return '2';
6843: } else {
6844: return '';
6845: }
6846: }
6847:
6848: if ($thisallowed eq 'A') {
6849: return 'A';
6850: } elsif ($thisallowed eq 'B') {
6851: return 'B';
6852: }
6853: return 'F';
6854: }
6855:
6856: # ------------------------------------------- Check construction space access
6857:
6858: sub constructaccess {
6859: my ($url,$setpriv)=@_;
6860:
6861: # We do not allow editing of previous versions of files
6862: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6863:
6864: # Get username and domain from URL
6865: my ($ownername,$ownerdomain,$ownerhome);
6866:
6867: ($ownerdomain,$ownername) =
6868: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6869:
6870: # The URL does not really point to any authorspace, forget it
6871: unless (($ownername) && ($ownerdomain)) { return ''; }
6872:
6873: # Now we need to see if the user has access to the authorspace of
6874: # $ownername at $ownerdomain
6875:
6876: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6877: # Real author for this?
6878: $ownerhome = $env{'user.home'};
6879: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6880: return ($ownername,$ownerdomain,$ownerhome);
6881: }
6882: } else {
6883: # Co-author for this?
6884: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6885: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6886: $ownerhome = &homeserver($ownername,$ownerdomain);
6887: return ($ownername,$ownerdomain,$ownerhome);
6888: }
6889: }
6890:
6891: # We don't have any access right now. If we are not possibly going to do anything about this,
6892: # we might as well leave
6893: unless ($setpriv) { return ''; }
6894:
6895: # Backdoor access?
6896: my $allowed=&allowed('eco',$ownerdomain);
6897: # Nope
6898: unless ($allowed) { return ''; }
6899: # Looks like we may have access, but could be locked by the owner of the construction space
6900: if ($allowed eq 'U') {
6901: my %blocked=&get('environment',['domcoord.author'],
6902: $ownerdomain,$ownername);
6903: # Is blocked by owner
6904: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
6905: }
6906: if (($allowed eq 'F') || ($allowed eq 'U')) {
6907: # Grant temporary access
6908: my $then=$env{'user.login.time'};
6909: my $update=$env{'user.update.time'};
6910: if (!$update) { $update = $then; }
6911: my $refresh=$env{'user.refresh.time'};
6912: if (!$refresh) { $refresh = $update; }
6913: my $now = time;
6914: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
6915: $now,'ca','constructaccess');
6916: $ownerhome = &homeserver($ownername,$ownerdomain);
6917: return($ownername,$ownerdomain,$ownerhome);
6918: }
6919: # No business here
6920: return '';
6921: }
6922:
6923: sub get_comm_blocks {
6924: my ($cdom,$cnum) = @_;
6925: if ($cdom eq '' || $cnum eq '') {
6926: return unless ($env{'request.course.id'});
6927: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6928: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6929: }
6930: my %commblocks;
6931: my $hashid=$cdom.'_'.$cnum;
6932: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6933: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6934: %commblocks = %{$blocksref};
6935: } else {
6936: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6937: my $cachetime = 600;
6938: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6939: }
6940: return %commblocks;
6941: }
6942:
6943: sub has_comm_blocking {
6944: my ($priv,$symb,$uri,$blocks) = @_;
6945: return unless ($env{'request.course.id'});
6946: return unless ($priv eq 'bre');
6947: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6948: my %commblocks;
6949: if (ref($blocks) eq 'HASH') {
6950: %commblocks = %{$blocks};
6951: } else {
6952: %commblocks = &get_comm_blocks();
6953: }
6954: return unless (keys(%commblocks) > 0);
6955: if (!$symb) { $symb=&symbread($uri,1); }
6956: my ($map,$resid,undef)=&decode_symb($symb);
6957: my %tocheck = (
6958: maps => $map,
6959: resources => $symb,
6960: );
6961: my @blockers;
6962: my $now = time;
6963: my $navmap = Apache::lonnavmaps::navmap->new();
6964: foreach my $block (keys(%commblocks)) {
6965: if ($block =~ /^(\d+)____(\d+)$/) {
6966: my ($start,$end) = ($1,$2);
6967: if ($start <= $now && $end >= $now) {
6968: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6969: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6970: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6971: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6972: unless (grep(/^\Q$block\E$/,@blockers)) {
6973: push(@blockers,$block);
6974: }
6975: }
6976: }
6977: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6978: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6979: unless (grep(/^\Q$block\E$/,@blockers)) {
6980: push(@blockers,$block);
6981: }
6982: }
6983: }
6984: }
6985: }
6986: }
6987: } elsif ($block =~ /^firstaccess____(.+)$/) {
6988: my $item = $1;
6989: my @to_test;
6990: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6991: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6992: my $check_interval;
6993: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6994: my @interval;
6995: my $type = 'map';
6996: if ($item eq 'course') {
6997: $type = 'course';
6998: @interval=&EXT("resource.0.interval");
6999: } else {
7000: if ($item =~ /___\d+___/) {
7001: $type = 'resource';
7002: @interval=&EXT("resource.0.interval",$item);
7003: if (ref($navmap)) {
7004: my $res = $navmap->getBySymb($item);
7005: push(@to_test,$res);
7006: }
7007: } else {
7008: my $mapsymb = &symbread($item,1);
7009: if ($mapsymb) {
7010: if (ref($navmap)) {
7011: my $mapres = $navmap->getBySymb($mapsymb);
7012: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
7013: foreach my $res (@to_test) {
7014: my $symb = $res->symb();
7015: next if ($symb eq $mapsymb);
7016: if ($symb ne '') {
7017: @interval=&EXT("resource.0.interval",$symb);
7018: last;
7019: }
7020: }
7021: }
7022: }
7023: }
7024: }
7025: if ($interval[0] =~ /\d+/) {
7026: my $first_access;
7027: if ($type eq 'resource') {
7028: $first_access=&get_first_access($interval[1],$item);
7029: } elsif ($type eq 'map') {
7030: $first_access=&get_first_access($interval[1],undef,$item);
7031: } else {
7032: $first_access=&get_first_access($interval[1]);
7033: }
7034: if ($first_access) {
7035: my $timesup = $first_access+$interval[0];
7036: if ($timesup > $now) {
7037: foreach my $res (@to_test) {
7038: if ($res->is_problem()) {
7039: if ($res->completable()) {
7040: unless (grep(/^\Q$block\E$/,@blockers)) {
7041: push(@blockers,$block);
7042: }
7043: last;
7044: }
7045: }
7046: }
7047: }
7048: }
7049: }
7050: }
7051: }
7052: }
7053: }
7054: }
7055: return @blockers;
7056: }
7057:
7058: sub check_docs_block {
7059: my ($docsblock,$tocheck) =@_;
7060: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7061: return;
7062: }
7063: if (ref($docsblock->{'maps'}) eq 'HASH') {
7064: if ($tocheck->{'maps'}) {
7065: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7066: return 1;
7067: }
7068: }
7069: }
7070: if (ref($docsblock->{'resources'}) eq 'HASH') {
7071: if ($tocheck->{'resources'}) {
7072: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7073: return 1;
7074: }
7075: }
7076: }
7077: return;
7078: }
7079:
7080: #
7081: # Removes the versino from a URI and
7082: # splits it in to its filename and path to the filename.
7083: # Seems like File::Basename could have done this more clearly.
7084: # Parameters:
7085: # $uri - input URI
7086: # Returns:
7087: # Two element list consisting of
7088: # $pathname - the URI up to and excluding the trailing /
7089: # $filename - The part of the URI following the last /
7090: # NOTE:
7091: # Another realization of this is simply:
7092: # use File::Basename;
7093: # ...
7094: # $uri = shift;
7095: # $filename = basename($uri);
7096: # $path = dirname($uri);
7097: # return ($filename, $path);
7098: #
7099: # The implementation below is probably faster however.
7100: #
7101: sub split_uri_for_cond {
7102: my $uri=&deversion(&declutter(shift));
7103: my @uriparts=split(/\//,$uri);
7104: my $filename=pop(@uriparts);
7105: my $pathname=join('/',@uriparts);
7106: return ($pathname,$filename);
7107: }
7108: # --------------------------------------------------- Is a resource on the map?
7109:
7110: sub is_on_map {
7111: my ($pathname,$filename) = &split_uri_for_cond(shift);
7112: #Trying to find the conditional for the file
7113: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7114: /\&\Q$filename\E\:([\d\|]+)\&/);
7115: if ($match) {
7116: return (1,$1);
7117: } else {
7118: return (0,0);
7119: }
7120: }
7121:
7122: # --------------------------------------------------------- Get symb from alias
7123:
7124: sub get_symb_from_alias {
7125: my $symb=shift;
7126: my ($map,$resid,$url)=&decode_symb($symb);
7127: # Already is a symb
7128: if ($url) { return $symb; }
7129: # Must be an alias
7130: my $aliassymb='';
7131: my %bighash;
7132: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7133: &GDBM_READER(),0640)) {
7134: my $rid=$bighash{'mapalias_'.$symb};
7135: if ($rid) {
7136: my ($mapid,$resid)=split(/\./,$rid);
7137: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7138: $resid,$bighash{'src_'.$rid});
7139: }
7140: untie %bighash;
7141: }
7142: return $aliassymb;
7143: }
7144:
7145: # ----------------------------------------------------------------- Define Role
7146:
7147: sub definerole {
7148: if (allowed('mcr','/')) {
7149: my ($rolename,$sysrole,$domrole,$courole)=@_;
7150: foreach my $role (split(':',$sysrole)) {
7151: my ($crole,$cqual)=split(/\&/,$role);
7152: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7153: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7154: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7155: return "refused:s:$crole&$cqual";
7156: }
7157: }
7158: }
7159: foreach my $role (split(':',$domrole)) {
7160: my ($crole,$cqual)=split(/\&/,$role);
7161: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7162: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7163: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7164: return "refused:d:$crole&$cqual";
7165: }
7166: }
7167: }
7168: foreach my $role (split(':',$courole)) {
7169: my ($crole,$cqual)=split(/\&/,$role);
7170: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7171: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7172: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7173: return "refused:c:$crole&$cqual";
7174: }
7175: }
7176: }
7177: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7178: "$env{'user.domain'}:$env{'user.name'}:".
7179: "rolesdef_$rolename=".
7180: escape($sysrole.'_'.$domrole.'_'.$courole);
7181: return reply($command,$env{'user.home'});
7182: } else {
7183: return 'refused';
7184: }
7185: }
7186:
7187: # ---------------- Make a metadata query against the network of library servers
7188:
7189: sub metadata_query {
7190: my ($query,$custom,$customshow,$server_array)=@_;
7191: my %rhash;
7192: my %libserv = &all_library();
7193: my @server_list = (defined($server_array) ? @$server_array
7194: : keys(%libserv) );
7195: for my $server (@server_list) {
7196: unless ($custom or $customshow) {
7197: my $reply=&reply("querysend:".&escape($query),$server);
7198: $rhash{$server}=$reply;
7199: }
7200: else {
7201: my $reply=&reply("querysend:".&escape($query).':'.
7202: &escape($custom).':'.&escape($customshow),
7203: $server);
7204: $rhash{$server}=$reply;
7205: }
7206: }
7207: return \%rhash;
7208: }
7209:
7210: # ----------------------------------------- Send log queries and wait for reply
7211:
7212: sub log_query {
7213: my ($uname,$udom,$query,%filters)=@_;
7214: my $uhome=&homeserver($uname,$udom);
7215: if ($uhome eq 'no_host') { return 'error: no_host'; }
7216: my $uhost=&hostname($uhome);
7217: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7218: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7219: $uhome);
7220: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7221: return get_query_reply($queryid);
7222: }
7223:
7224: # -------------------------- Update MySQL table for portfolio file
7225:
7226: sub update_portfolio_table {
7227: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7228: if ($group ne '') {
7229: $file_name =~s /^\Q$group\E//;
7230: }
7231: my $homeserver = &homeserver($uname,$udom);
7232: my $queryid=
7233: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7234: ':'.&escape($file_name).':'.$action,$homeserver);
7235: my $reply = &get_query_reply($queryid);
7236: return $reply;
7237: }
7238:
7239: # -------------------------- Update MySQL allusers table
7240:
7241: sub update_allusers_table {
7242: my ($uname,$udom,$names) = @_;
7243: my $homeserver = &homeserver($uname,$udom);
7244: my $queryid=
7245: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7246: 'lastname='.&escape($names->{'lastname'}).'%%'.
7247: 'firstname='.&escape($names->{'firstname'}).'%%'.
7248: 'middlename='.&escape($names->{'middlename'}).'%%'.
7249: 'generation='.&escape($names->{'generation'}).'%%'.
7250: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7251: 'id='.&escape($names->{'id'}),$homeserver);
7252: return;
7253: }
7254:
7255: # ------- Request retrieval of institutional classlists for course(s)
7256:
7257: sub fetch_enrollment_query {
7258: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7259: my $homeserver;
7260: my $maxtries = 1;
7261: if ($context eq 'automated') {
7262: $homeserver = $perlvar{'lonHostID'};
7263: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7264: } else {
7265: $homeserver = &homeserver($cnum,$dom);
7266: }
7267: my $host=&hostname($homeserver);
7268: my $cmd = '';
7269: foreach my $affiliate (keys(%{$affiliatesref})) {
7270: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7271: }
7272: $cmd =~ s/%%$//;
7273: $cmd = &escape($cmd);
7274: my $query = 'fetchenrollment';
7275: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7276: unless ($queryid=~/^\Q$host\E\_/) {
7277: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7278: return 'error: '.$queryid;
7279: }
7280: my $reply = &get_query_reply($queryid);
7281: my $tries = 1;
7282: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7283: $reply = &get_query_reply($queryid);
7284: $tries ++;
7285: }
7286: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7287: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7288: } else {
7289: my @responses = split(/:/,$reply);
7290: if ($homeserver eq $perlvar{'lonHostID'}) {
7291: foreach my $line (@responses) {
7292: my ($key,$value) = split(/=/,$line,2);
7293: $$replyref{$key} = $value;
7294: }
7295: } else {
7296: my $pathname = LONCAPA::tempdir();
7297: foreach my $line (@responses) {
7298: my ($key,$value) = split(/=/,$line);
7299: $$replyref{$key} = $value;
7300: if ($value > 0) {
7301: foreach my $item (@{$$affiliatesref{$key}}) {
7302: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7303: my $destname = $pathname.'/'.$filename;
7304: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7305: if ($xml_classlist =~ /^error/) {
7306: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7307: } else {
7308: if ( open(FILE,">$destname") ) {
7309: print FILE &unescape($xml_classlist);
7310: close(FILE);
7311: } else {
7312: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7313: }
7314: }
7315: }
7316: }
7317: }
7318: }
7319: return 'ok';
7320: }
7321: return 'error';
7322: }
7323:
7324: sub get_query_reply {
7325: my $queryid=shift;
7326: my $replyfile=LONCAPA::tempdir().$queryid;
7327: my $reply='';
7328: for (1..100) {
7329: sleep 2;
7330: if (-e $replyfile.'.end') {
7331: if (open(my $fh,$replyfile)) {
7332: $reply = join('',<$fh>);
7333: close($fh);
7334: } else { return 'error: reply_file_error'; }
7335: return &unescape($reply);
7336: }
7337: }
7338: return 'timeout:'.$queryid;
7339: }
7340:
7341: sub courselog_query {
7342: #
7343: # possible filters:
7344: # url: url or symb
7345: # username
7346: # domain
7347: # action: view, submit, grade
7348: # start: timestamp
7349: # end: timestamp
7350: #
7351: my (%filters)=@_;
7352: unless ($env{'request.course.id'}) { return 'no_course'; }
7353: if ($filters{'url'}) {
7354: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7355: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7356: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7357: }
7358: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7359: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7360: return &log_query($cname,$cdom,'courselog',%filters);
7361: }
7362:
7363: sub userlog_query {
7364: #
7365: # possible filters:
7366: # action: log check role
7367: # start: timestamp
7368: # end: timestamp
7369: #
7370: my ($uname,$udom,%filters)=@_;
7371: return &log_query($uname,$udom,'userlog',%filters);
7372: }
7373:
7374: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7375:
7376: sub auto_run {
7377: my ($cnum,$cdom) = @_;
7378: my $response = 0;
7379: my $settings;
7380: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7381: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7382: $settings = $domconfig{'autoenroll'};
7383: if ($settings->{'run'} eq '1') {
7384: $response = 1;
7385: }
7386: } else {
7387: my $homeserver;
7388: if (&is_course($cdom,$cnum)) {
7389: $homeserver = &homeserver($cnum,$cdom);
7390: } else {
7391: $homeserver = &domain($cdom,'primary');
7392: }
7393: if ($homeserver ne 'no_host') {
7394: $response = &reply('autorun:'.$cdom,$homeserver);
7395: }
7396: }
7397: return $response;
7398: }
7399:
7400: sub auto_get_sections {
7401: my ($cnum,$cdom,$inst_coursecode) = @_;
7402: my $homeserver;
7403: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7404: $homeserver = &homeserver($cnum,$cdom);
7405: }
7406: if (!defined($homeserver)) {
7407: if ($cdom =~ /^$match_domain$/) {
7408: $homeserver = &domain($cdom,'primary');
7409: }
7410: }
7411: my @secs;
7412: if (defined($homeserver)) {
7413: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7414: unless ($response eq 'refused') {
7415: @secs = split(/:/,$response);
7416: }
7417: }
7418: return @secs;
7419: }
7420:
7421: sub auto_new_course {
7422: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7423: my $homeserver = &homeserver($cnum,$cdom);
7424: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7425: return $response;
7426: }
7427:
7428: sub auto_validate_courseID {
7429: my ($cnum,$cdom,$inst_course_id) = @_;
7430: my $homeserver = &homeserver($cnum,$cdom);
7431: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7432: return $response;
7433: }
7434:
7435: sub auto_validate_instcode {
7436: my ($cnum,$cdom,$instcode,$owner) = @_;
7437: my ($homeserver,$response);
7438: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7439: $homeserver = &homeserver($cnum,$cdom);
7440: }
7441: if (!defined($homeserver)) {
7442: if ($cdom =~ /^$match_domain$/) {
7443: $homeserver = &domain($cdom,'primary');
7444: }
7445: }
7446: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7447: &escape($instcode).':'.&escape($owner),$homeserver));
7448: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7449: return ($outcome,$description,$defaultcredits);
7450: }
7451:
7452: sub auto_create_password {
7453: my ($cnum,$cdom,$authparam,$udom) = @_;
7454: my ($homeserver,$response);
7455: my $create_passwd = 0;
7456: my $authchk = '';
7457: if ($udom =~ /^$match_domain$/) {
7458: $homeserver = &domain($udom,'primary');
7459: }
7460: if ($homeserver eq '') {
7461: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7462: $homeserver = &homeserver($cnum,$cdom);
7463: }
7464: }
7465: if ($homeserver eq '') {
7466: $authchk = 'nodomain';
7467: } else {
7468: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7469: if ($response eq 'refused') {
7470: $authchk = 'refused';
7471: } else {
7472: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7473: }
7474: }
7475: return ($authparam,$create_passwd,$authchk);
7476: }
7477:
7478: sub auto_photo_permission {
7479: my ($cnum,$cdom,$students) = @_;
7480: my $homeserver = &homeserver($cnum,$cdom);
7481: my ($outcome,$perm_reqd,$conditions) =
7482: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7483: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7484: return (undef,undef);
7485: }
7486: return ($outcome,$perm_reqd,$conditions);
7487: }
7488:
7489: sub auto_checkphotos {
7490: my ($uname,$udom,$pid) = @_;
7491: my $homeserver = &homeserver($uname,$udom);
7492: my ($result,$resulttype);
7493: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7494: &escape($uname).':'.&escape($pid),
7495: $homeserver));
7496: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7497: return (undef,undef);
7498: }
7499: if ($outcome) {
7500: ($result,$resulttype) = split(/:/,$outcome);
7501: }
7502: return ($result,$resulttype);
7503: }
7504:
7505: sub auto_photochoice {
7506: my ($cnum,$cdom) = @_;
7507: my $homeserver = &homeserver($cnum,$cdom);
7508: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7509: &escape($cdom),
7510: $homeserver)));
7511: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7512: return (undef,undef);
7513: }
7514: return ($update,$comment);
7515: }
7516:
7517: sub auto_photoupdate {
7518: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7519: my $homeserver = &homeserver($cnum,$dom);
7520: my $host=&hostname($homeserver);
7521: my $cmd = '';
7522: my $maxtries = 1;
7523: foreach my $affiliate (keys(%{$affiliatesref})) {
7524: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7525: }
7526: $cmd =~ s/%%$//;
7527: $cmd = &escape($cmd);
7528: my $query = 'institutionalphotos';
7529: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7530: unless ($queryid=~/^\Q$host\E\_/) {
7531: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7532: return 'error: '.$queryid;
7533: }
7534: my $reply = &get_query_reply($queryid);
7535: my $tries = 1;
7536: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7537: $reply = &get_query_reply($queryid);
7538: $tries ++;
7539: }
7540: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7541: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7542: } else {
7543: my @responses = split(/:/,$reply);
7544: my $outcome = shift(@responses);
7545: foreach my $item (@responses) {
7546: my ($key,$value) = split(/=/,$item);
7547: $$photo{$key} = $value;
7548: }
7549: return $outcome;
7550: }
7551: return 'error';
7552: }
7553:
7554: sub auto_instcode_format {
7555: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7556: $cat_order) = @_;
7557: my $courses = '';
7558: my @homeservers;
7559: if ($caller eq 'global') {
7560: my %servers = &get_servers($codedom,'library');
7561: foreach my $tryserver (keys(%servers)) {
7562: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7563: push(@homeservers,$tryserver);
7564: }
7565: }
7566: } elsif ($caller eq 'requests') {
7567: if ($codedom =~ /^$match_domain$/) {
7568: my $chome = &domain($codedom,'primary');
7569: unless ($chome eq 'no_host') {
7570: push(@homeservers,$chome);
7571: }
7572: }
7573: } else {
7574: push(@homeservers,&homeserver($caller,$codedom));
7575: }
7576: foreach my $code (keys(%{$instcodes})) {
7577: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7578: }
7579: chop($courses);
7580: my $ok_response = 0;
7581: my $response;
7582: while (@homeservers > 0 && $ok_response == 0) {
7583: my $server = shift(@homeservers);
7584: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7585: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7586: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7587: split(/:/,$response);
7588: %{$codes} = (%{$codes},&str2hash($codes_str));
7589: push(@{$codetitles},&str2array($codetitles_str));
7590: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7591: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7592: $ok_response = 1;
7593: }
7594: }
7595: if ($ok_response) {
7596: return 'ok';
7597: } else {
7598: return $response;
7599: }
7600: }
7601:
7602: sub auto_instcode_defaults {
7603: my ($domain,$returnhash,$code_order) = @_;
7604: my @homeservers;
7605:
7606: my %servers = &get_servers($domain,'library');
7607: foreach my $tryserver (keys(%servers)) {
7608: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7609: push(@homeservers,$tryserver);
7610: }
7611: }
7612:
7613: my $response;
7614: foreach my $server (@homeservers) {
7615: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7616: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7617:
7618: foreach my $pair (split(/\&/,$response)) {
7619: my ($name,$value)=split(/\=/,$pair);
7620: if ($name eq 'code_order') {
7621: @{$code_order} = split(/\&/,&unescape($value));
7622: } else {
7623: $returnhash->{&unescape($name)}=&unescape($value);
7624: }
7625: }
7626: return 'ok';
7627: }
7628:
7629: return $response;
7630: }
7631:
7632: sub auto_possible_instcodes {
7633: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7634: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7635: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7636: return;
7637: }
7638: my (@homeservers,$uhome);
7639: if (defined(&domain($domain,'primary'))) {
7640: $uhome=&domain($domain,'primary');
7641: push(@homeservers,&domain($domain,'primary'));
7642: } else {
7643: my %servers = &get_servers($domain,'library');
7644: foreach my $tryserver (keys(%servers)) {
7645: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7646: push(@homeservers,$tryserver);
7647: }
7648: }
7649: }
7650: my $response;
7651: foreach my $server (@homeservers) {
7652: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7653: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7654: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7655: split(':',$response);
7656: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7657: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7658: foreach my $item (split('&',$cat_title)) {
7659: my ($name,$value)=split('=',$item);
7660: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7661: }
7662: foreach my $item (split('&',$cat_order)) {
7663: my ($name,$value)=split('=',$item);
7664: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7665: }
7666: return 'ok';
7667: }
7668: return $response;
7669: }
7670:
7671: sub auto_courserequest_checks {
7672: my ($dom) = @_;
7673: my ($homeserver,%validations);
7674: if ($dom =~ /^$match_domain$/) {
7675: $homeserver = &domain($dom,'primary');
7676: }
7677: unless ($homeserver eq 'no_host') {
7678: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7679: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7680: my @items = split(/&/,$response);
7681: foreach my $item (@items) {
7682: my ($key,$value) = split('=',$item);
7683: $validations{&unescape($key)} = &thaw_unescape($value);
7684: }
7685: }
7686: }
7687: return %validations;
7688: }
7689:
7690: sub auto_courserequest_validation {
7691: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7692: my ($homeserver,$response);
7693: if ($dom =~ /^$match_domain$/) {
7694: $homeserver = &domain($dom,'primary');
7695: }
7696: unless ($homeserver eq 'no_host') {
7697:
7698: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7699: ':'.&escape($crstype).':'.&escape($inststatuslist).
7700: ':'.&escape($instcode).':'.&escape($instseclist),
7701: $homeserver));
7702: }
7703: return $response;
7704: }
7705:
7706: sub auto_validate_class_sec {
7707: my ($cdom,$cnum,$owners,$inst_class) = @_;
7708: my $homeserver = &homeserver($cnum,$cdom);
7709: my $ownerlist;
7710: if (ref($owners) eq 'ARRAY') {
7711: $ownerlist = join(',',@{$owners});
7712: } else {
7713: $ownerlist = $owners;
7714: }
7715: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7716: &escape($ownerlist).':'.$cdom,$homeserver);
7717: return $response;
7718: }
7719:
7720: # ------------------------------------------------------- Course Group routines
7721:
7722: sub get_coursegroups {
7723: my ($cdom,$cnum,$group,$namespace) = @_;
7724: return(&dump($namespace,$cdom,$cnum,$group));
7725: }
7726:
7727: sub modify_coursegroup {
7728: my ($cdom,$cnum,$groupsettings) = @_;
7729: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7730: }
7731:
7732: sub toggle_coursegroup_status {
7733: my ($cdom,$cnum,$group,$action) = @_;
7734: my ($from_namespace,$to_namespace);
7735: if ($action eq 'delete') {
7736: $from_namespace = 'coursegroups';
7737: $to_namespace = 'deleted_groups';
7738: } else {
7739: $from_namespace = 'deleted_groups';
7740: $to_namespace = 'coursegroups';
7741: }
7742: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7743: if (my $tmp = &error(%curr_group)) {
7744: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7745: return ('read error',$tmp);
7746: } else {
7747: my %savedsettings = %curr_group;
7748: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7749: my $deloutcome;
7750: if ($result eq 'ok') {
7751: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7752: } else {
7753: return ('write error',$result);
7754: }
7755: if ($deloutcome eq 'ok') {
7756: return 'ok';
7757: } else {
7758: return ('delete error',$deloutcome);
7759: }
7760: }
7761: }
7762:
7763: sub modify_group_roles {
7764: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7765: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7766: my $role = 'gr/'.&escape($userprivs);
7767: my ($uname,$udom) = split(/:/,$user);
7768: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7769: if ($result eq 'ok') {
7770: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7771: }
7772: return $result;
7773: }
7774:
7775: sub modify_coursegroup_membership {
7776: my ($cdom,$cnum,$membership) = @_;
7777: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7778: return $result;
7779: }
7780:
7781: sub get_active_groups {
7782: my ($udom,$uname,$cdom,$cnum) = @_;
7783: my $now = time;
7784: my %groups = ();
7785: foreach my $key (keys(%env)) {
7786: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7787: my ($start,$end) = split(/\./,$env{$key});
7788: if (($end!=0) && ($end<$now)) { next; }
7789: if (($start!=0) && ($start>$now)) { next; }
7790: if ($1 eq $cdom && $2 eq $cnum) {
7791: $groups{$3} = $env{$key} ;
7792: }
7793: }
7794: }
7795: return %groups;
7796: }
7797:
7798: sub get_group_membership {
7799: my ($cdom,$cnum,$group) = @_;
7800: return(&dump('groupmembership',$cdom,$cnum,$group));
7801: }
7802:
7803: sub get_users_groups {
7804: my ($udom,$uname,$courseid) = @_;
7805: my @usersgroups;
7806: my $cachetime=1800;
7807:
7808: my $hashid="$udom:$uname:$courseid";
7809: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7810: if (defined($cached)) {
7811: @usersgroups = split(/:/,$grouplist);
7812: } else {
7813: $grouplist = '';
7814: my $courseurl = &courseid_to_courseurl($courseid);
7815: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7816: my $access_end = $env{'course.'.$courseid.
7817: '.default_enrollment_end_date'};
7818: my $now = time;
7819: foreach my $key (keys(%roleshash)) {
7820: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7821: my $group = $1;
7822: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7823: my $start = $2;
7824: my $end = $1;
7825: if ($start == -1) { next; } # deleted from group
7826: if (($start!=0) && ($start>$now)) { next; }
7827: if (($end!=0) && ($end<$now)) {
7828: if ($access_end && $access_end < $now) {
7829: if ($access_end - $end < 86400) {
7830: push(@usersgroups,$group);
7831: }
7832: }
7833: next;
7834: }
7835: push(@usersgroups,$group);
7836: }
7837: }
7838: }
7839: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7840: $grouplist = join(':',@usersgroups);
7841: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7842: }
7843: return @usersgroups;
7844: }
7845:
7846: sub devalidate_getgroups_cache {
7847: my ($udom,$uname,$cdom,$cnum)=@_;
7848: my $courseid = $cdom.'_'.$cnum;
7849:
7850: my $hashid="$udom:$uname:$courseid";
7851: &devalidate_cache_new('getgroups',$hashid);
7852: }
7853:
7854: # ------------------------------------------------------------------ Plain Text
7855:
7856: sub plaintext {
7857: my ($short,$type,$cid,$forcedefault) = @_;
7858: if ($short =~ m{^cr/}) {
7859: return (split('/',$short))[-1];
7860: }
7861: if (!defined($cid)) {
7862: $cid = $env{'request.course.id'};
7863: }
7864: my %rolenames = (
7865: Course => 'std',
7866: Community => 'alt1',
7867: );
7868: if ($cid ne '') {
7869: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7870: unless ($forcedefault) {
7871: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7872: &Apache::lonlocal::mt_escape(\$roletext);
7873: return &Apache::lonlocal::mt($roletext);
7874: }
7875: }
7876: }
7877: if ((defined($type)) && (defined($rolenames{$type})) &&
7878: (defined($rolenames{$type})) &&
7879: (defined($prp{$short}{$rolenames{$type}}))) {
7880: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7881: } elsif ($cid ne '') {
7882: my $crstype = $env{'course.'.$cid.'.type'};
7883: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7884: (defined($prp{$short}{$rolenames{$crstype}}))) {
7885: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7886: }
7887: }
7888: return &Apache::lonlocal::mt($prp{$short}{'std'});
7889: }
7890:
7891: # ----------------------------------------------------------------- Assign Role
7892:
7893: sub assignrole {
7894: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7895: $context)=@_;
7896: my $mrole;
7897: if ($role =~ /^cr\//) {
7898: my $cwosec=$url;
7899: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7900: unless (&allowed('ccr',$cwosec)) {
7901: my $refused = 1;
7902: if ($context eq 'requestcourses') {
7903: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7904: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7905: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7906: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7907: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7908: if ($crsenv{'internal.courseowner'} eq
7909: $env{'user.name'}.':'.$env{'user.domain'}) {
7910: $refused = '';
7911: }
7912: }
7913: }
7914: }
7915: }
7916: if ($refused) {
7917: &logthis('Refused custom assignrole: '.
7918: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7919: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7920: return 'refused';
7921: }
7922: }
7923: $mrole='cr';
7924: } elsif ($role =~ /^gr\//) {
7925: my $cwogrp=$url;
7926: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7927: unless (&allowed('mdg',$cwogrp)) {
7928: &logthis('Refused group assignrole: '.
7929: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7930: $env{'user.name'}.' at '.$env{'user.domain'});
7931: return 'refused';
7932: }
7933: $mrole='gr';
7934: } else {
7935: my $cwosec=$url;
7936: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7937: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7938: my $refused;
7939: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7940: if (!(&allowed('c'.$role,$url))) {
7941: $refused = 1;
7942: }
7943: } else {
7944: $refused = 1;
7945: }
7946: if ($refused) {
7947: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7948: if (!$selfenroll && $context eq 'course') {
7949: my %crsenv;
7950: if ($role eq 'cc' || $role eq 'co') {
7951: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7952: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7953: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7954: if ($crsenv{'internal.courseowner'} eq
7955: $env{'user.name'}.':'.$env{'user.domain'}) {
7956: $refused = '';
7957: }
7958: }
7959: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7960: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7961: if ($crsenv{'internal.courseowner'} eq
7962: $env{'user.name'}.':'.$env{'user.domain'}) {
7963: $refused = '';
7964: }
7965: }
7966: }
7967: }
7968: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7969: $refused = '';
7970: } elsif ($context eq 'requestcourses') {
7971: my @possroles = ('st','ta','ep','in','cc','co');
7972: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7973: my $wrongcc;
7974: if ($cnum =~ /^$match_community$/) {
7975: $wrongcc = 1 if ($role eq 'cc');
7976: } else {
7977: $wrongcc = 1 if ($role eq 'co');
7978: }
7979: unless ($wrongcc) {
7980: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7981: if ($crsenv{'internal.courseowner'} eq
7982: $env{'user.name'}.':'.$env{'user.domain'}) {
7983: $refused = '';
7984: }
7985: }
7986: }
7987: } elsif ($context eq 'requestauthor') {
7988: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7989: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
7990: if ($env{'environment.requestauthor'} eq 'automatic') {
7991: $refused = '';
7992: } else {
7993: my %domdefaults = &get_domain_defaults($udom);
7994: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
7995: my $checkbystatus;
7996: if ($env{'user.adv'}) {
7997: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
7998: if ($disposition eq 'automatic') {
7999: $refused = '';
8000: } elsif ($disposition eq '') {
8001: $checkbystatus = 1;
8002: }
8003: } else {
8004: $checkbystatus = 1;
8005: }
8006: if ($checkbystatus) {
8007: if ($env{'environment.inststatus'}) {
8008: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8009: foreach my $type (@inststatuses) {
8010: if (($type ne '') &&
8011: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8012: $refused = '';
8013: }
8014: }
8015: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8016: $refused = '';
8017: }
8018: }
8019: }
8020: }
8021: }
8022: }
8023: if ($refused) {
8024: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8025: ' '.$role.' '.$end.' '.$start.' by '.
8026: $env{'user.name'}.' at '.$env{'user.domain'});
8027: return 'refused';
8028: }
8029: }
8030: } elsif ($role eq 'au') {
8031: if ($url ne '/'.$udom.'/') {
8032: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8033: ' to assign author role for '.$uname.':'.$udom.
8034: ' in domain: '.$url.' refused (wrong domain).');
8035: return 'refused';
8036: }
8037: }
8038: $mrole=$role;
8039: }
8040: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8041: "$udom:$uname:$url".'_'."$mrole=$role";
8042: if ($end) { $command.='_'.$end; }
8043: if ($start) {
8044: if ($end) {
8045: $command.='_'.$start;
8046: } else {
8047: $command.='_0_'.$start;
8048: }
8049: }
8050: my $origstart = $start;
8051: my $origend = $end;
8052: my $delflag;
8053: # actually delete
8054: if ($deleteflag) {
8055: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8056: # modify command to delete the role
8057: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8058: "$udom:$uname:$url".'_'."$mrole";
8059: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8060: # set start and finish to negative values for userrolelog
8061: $start=-1;
8062: $end=-1;
8063: $delflag = 1;
8064: }
8065: }
8066: # send command
8067: my $answer=&reply($command,&homeserver($uname,$udom));
8068: # log new user role if status is ok
8069: if ($answer eq 'ok') {
8070: &userrolelog($role,$uname,$udom,$url,$start,$end);
8071: if (($role eq 'cc') || ($role eq 'in') ||
8072: ($role eq 'ep') || ($role eq 'ad') ||
8073: ($role eq 'ta') || ($role eq 'st') ||
8074: ($role=~/^cr/) || ($role eq 'gr') ||
8075: ($role eq 'co')) {
8076: # for course roles, perform group memberships changes triggered by role change.
8077: unless ($role =~ /^gr/) {
8078: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8079: $origstart,$selfenroll,$context);
8080: }
8081: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8082: $selfenroll,$context);
8083: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8084: ($role eq 'au') || ($role eq 'dc')) {
8085: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8086: $context);
8087: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8088: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8089: $context);
8090: }
8091: if ($role eq 'cc') {
8092: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8093: }
8094: }
8095: return $answer;
8096: }
8097:
8098: sub autoupdate_coowners {
8099: my ($url,$end,$start,$uname,$udom) = @_;
8100: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8101: if (($cdom ne '') && ($cnum ne '')) {
8102: my $now = time;
8103: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8104: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8105: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8106: my $instcode = $coursehash{'internal.coursecode'};
8107: if ($instcode ne '') {
8108: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8109: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8110: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8111: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8112: if ($result eq 'valid') {
8113: if ($coursehash{'internal.co-owners'}) {
8114: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8115: push(@newcoowners,$coowner);
8116: }
8117: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8118: push(@newcoowners,$uname.':'.$udom);
8119: }
8120: @newcoowners = sort(@newcoowners);
8121: } else {
8122: push(@newcoowners,$uname.':'.$udom);
8123: }
8124: } else {
8125: if ($coursehash{'internal.co-owners'}) {
8126: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8127: unless ($coowner eq $uname.':'.$udom) {
8128: push(@newcoowners,$coowner);
8129: }
8130: }
8131: unless (@newcoowners > 0) {
8132: $delcoowners = 1;
8133: $coowners = '';
8134: }
8135: }
8136: }
8137: if (@newcoowners || $delcoowners) {
8138: &store_coowners($cdom,$cnum,$coursehash{'home'},
8139: $delcoowners,@newcoowners);
8140: }
8141: }
8142: }
8143: }
8144: }
8145: }
8146: }
8147:
8148: sub store_coowners {
8149: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8150: my $cid = $cdom.'_'.$cnum;
8151: my ($coowners,$delresult,$putresult);
8152: if (@newcoowners) {
8153: $coowners = join(',',@newcoowners);
8154: my %coownershash = (
8155: 'internal.co-owners' => $coowners,
8156: );
8157: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8158: if ($putresult eq 'ok') {
8159: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8160: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8161: }
8162: }
8163: }
8164: if ($delcoowners) {
8165: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8166: if ($delresult eq 'ok') {
8167: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8168: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8169: }
8170: }
8171: }
8172: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8173: my %crsinfo =
8174: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8175: if (ref($crsinfo{$cid}) eq 'HASH') {
8176: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8177: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8178: }
8179: }
8180: }
8181:
8182: # -------------------------------------------------- Modify user authentication
8183: # Overrides without validation
8184:
8185: sub modifyuserauth {
8186: my ($udom,$uname,$umode,$upass)=@_;
8187: my $uhome=&homeserver($uname,$udom);
8188: unless (&allowed('mau',$udom)) { return 'refused'; }
8189: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8190: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8191: ' in domain '.$env{'request.role.domain'});
8192: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8193: &escape($upass),$uhome);
8194: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8195: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8196: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8197: &log($udom,,$uname,$uhome,
8198: 'Authentication changed by '.$env{'user.domain'}.', '.
8199: $env{'user.name'}.', '.$umode.
8200: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8201: unless ($reply eq 'ok') {
8202: &logthis('Authentication mode error: '.$reply);
8203: return 'error: '.$reply;
8204: }
8205: return 'ok';
8206: }
8207:
8208: # --------------------------------------------------------------- Modify a user
8209:
8210: sub modifyuser {
8211: my ($udom, $uname, $uid,
8212: $umode, $upass, $first,
8213: $middle, $last, $gene,
8214: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8215: $udom= &LONCAPA::clean_domain($udom);
8216: $uname=&LONCAPA::clean_username($uname);
8217: my $showcandelete = 'none';
8218: if (ref($candelete) eq 'ARRAY') {
8219: if (@{$candelete} > 0) {
8220: $showcandelete = join(', ',@{$candelete});
8221: }
8222: }
8223: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8224: $umode.', '.$first.', '.$middle.', '.
8225: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8226: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8227: ' desiredhome not specified').
8228: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8229: ' in domain '.$env{'request.role.domain'});
8230: my $uhome=&homeserver($uname,$udom,'true');
8231: my $newuser;
8232: if ($uhome eq 'no_host') {
8233: $newuser = 1;
8234: }
8235: # ----------------------------------------------------------------- Create User
8236: if (($uhome eq 'no_host') &&
8237: (($umode && $upass) || ($umode eq 'localauth'))) {
8238: my $unhome='';
8239: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8240: $unhome = $desiredhome;
8241: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8242: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8243: } else { # load balancing routine for determining $unhome
8244: my $loadm=10000000;
8245: my %servers = &get_servers($udom,'library');
8246: foreach my $tryserver (keys(%servers)) {
8247: my $answer=reply('load',$tryserver);
8248: if (($answer=~/\d+/) && ($answer<$loadm)) {
8249: $loadm=$answer;
8250: $unhome=$tryserver;
8251: }
8252: }
8253: }
8254: if (($unhome eq '') || ($unhome eq 'no_host')) {
8255: return 'error: unable to find a home server for '.$uname.
8256: ' in domain '.$udom;
8257: }
8258: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8259: &escape($upass),$unhome);
8260: unless ($reply eq 'ok') {
8261: return 'error: '.$reply;
8262: }
8263: $uhome=&homeserver($uname,$udom,'true');
8264: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8265: return 'error: unable verify users home machine.';
8266: }
8267: } # End of creation of new user
8268: # ---------------------------------------------------------------------- Add ID
8269: if ($uid) {
8270: $uid=~tr/A-Z/a-z/;
8271: my %uidhash=&idrget($udom,$uname);
8272: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8273: && (!$forceid)) {
8274: unless ($uid eq $uidhash{$uname}) {
8275: return 'error: user id "'.$uid.'" does not match '.
8276: 'current user id "'.$uidhash{$uname}.'".';
8277: }
8278: } else {
8279: &idput($udom,($uname => $uid));
8280: }
8281: }
8282: # -------------------------------------------------------------- Add names, etc
8283: my @tmp=&get('environment',
8284: ['firstname','middlename','lastname','generation','id',
8285: 'permanentemail','inststatus'],
8286: $udom,$uname);
8287: my (%names,%oldnames);
8288: if ($tmp[0] =~ m/^error:.*/) {
8289: %names=();
8290: } else {
8291: %names = @tmp;
8292: %oldnames = %names;
8293: }
8294: #
8295: # If name, email and/or uid are blank (e.g., because an uploaded file
8296: # of users did not contain them), do not overwrite existing values
8297: # unless field is in $candelete array ref.
8298: #
8299:
8300: my @fields = ('firstname','middlename','lastname','generation',
8301: 'permanentemail','id');
8302: my %newvalues;
8303: if (ref($candelete) eq 'ARRAY') {
8304: foreach my $field (@fields) {
8305: if (grep(/^\Q$field\E$/,@{$candelete})) {
8306: if ($field eq 'firstname') {
8307: $names{$field} = $first;
8308: } elsif ($field eq 'middlename') {
8309: $names{$field} = $middle;
8310: } elsif ($field eq 'lastname') {
8311: $names{$field} = $last;
8312: } elsif ($field eq 'generation') {
8313: $names{$field} = $gene;
8314: } elsif ($field eq 'permanentemail') {
8315: $names{$field} = $email;
8316: } elsif ($field eq 'id') {
8317: $names{$field} = $uid;
8318: }
8319: }
8320: }
8321: }
8322: if ($first) { $names{'firstname'} = $first; }
8323: if (defined($middle)) { $names{'middlename'} = $middle; }
8324: if ($last) { $names{'lastname'} = $last; }
8325: if (defined($gene)) { $names{'generation'} = $gene; }
8326: if ($email) {
8327: $email=~s/[^\w\@\.\-\,]//gs;
8328: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8329: }
8330: if ($uid) { $names{'id'} = $uid; }
8331: if (defined($inststatus)) {
8332: $names{'inststatus'} = '';
8333: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8334: if (ref($usertypes) eq 'HASH') {
8335: my @okstatuses;
8336: foreach my $item (split(/:/,$inststatus)) {
8337: if (defined($usertypes->{$item})) {
8338: push(@okstatuses,$item);
8339: }
8340: }
8341: if (@okstatuses) {
8342: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8343: }
8344: }
8345: }
8346: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8347: $umode.', '.$first.', '.$middle.', '.
8348: $last.', '.$gene.', '.$email.', '.$inststatus;
8349: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8350: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8351: } else {
8352: $logmsg .= ' during self creation';
8353: }
8354: my $changed;
8355: if ($newuser) {
8356: $changed = 1;
8357: } else {
8358: foreach my $field (@fields) {
8359: if ($names{$field} ne $oldnames{$field}) {
8360: $changed = 1;
8361: last;
8362: }
8363: }
8364: }
8365: unless ($changed) {
8366: $logmsg = 'No changes in user information needed for: '.$logmsg;
8367: &logthis($logmsg);
8368: return 'ok';
8369: }
8370: my $reply = &put('environment', \%names, $udom,$uname);
8371: if ($reply ne 'ok') {
8372: return 'error: '.$reply;
8373: }
8374: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8375: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8376: }
8377: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8378: &devalidate_cache_new('namescache',$uname.':'.$udom);
8379: $logmsg = 'Success modifying user '.$logmsg;
8380: &logthis($logmsg);
8381: return 'ok';
8382: }
8383:
8384: # -------------------------------------------------------------- Modify student
8385:
8386: sub modifystudent {
8387: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8388: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8389: $selfenroll,$context,$inststatus,$credits)=@_;
8390: if (!$cid) {
8391: unless ($cid=$env{'request.course.id'}) {
8392: return 'not_in_class';
8393: }
8394: }
8395: # --------------------------------------------------------------- Make the user
8396: my $reply=&modifyuser
8397: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8398: $desiredhome,$email,$inststatus);
8399: unless ($reply eq 'ok') { return $reply; }
8400: # This will cause &modify_student_enrollment to get the uid from the
8401: # students environment
8402: $uid = undef if (!$forceid);
8403: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8404: $gene,$usec,$end,$start,$type,$locktype,
8405: $cid,$selfenroll,$context,$credits);
8406: return $reply;
8407: }
8408:
8409: sub modify_student_enrollment {
8410: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8411: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8412: my ($cdom,$cnum,$chome);
8413: if (!$cid) {
8414: unless ($cid=$env{'request.course.id'}) {
8415: return 'not_in_class';
8416: }
8417: $cdom=$env{'course.'.$cid.'.domain'};
8418: $cnum=$env{'course.'.$cid.'.num'};
8419: } else {
8420: ($cdom,$cnum)=split(/_/,$cid);
8421: }
8422: $chome=$env{'course.'.$cid.'.home'};
8423: if (!$chome) {
8424: $chome=&homeserver($cnum,$cdom);
8425: }
8426: if (!$chome) { return 'unknown_course'; }
8427: # Make sure the user exists
8428: my $uhome=&homeserver($uname,$udom);
8429: if (($uhome eq '') || ($uhome eq 'no_host')) {
8430: return 'error: no such user';
8431: }
8432: # Get student data if we were not given enough information
8433: if (!defined($first) || $first eq '' ||
8434: !defined($last) || $last eq '' ||
8435: !defined($uid) || $uid eq '' ||
8436: !defined($middle) || $middle eq '' ||
8437: !defined($gene) || $gene eq '') {
8438: # They did not supply us with enough data to enroll the student, so
8439: # we need to pick up more information.
8440: my %tmp = &get('environment',
8441: ['firstname','middlename','lastname', 'generation','id']
8442: ,$udom,$uname);
8443:
8444: #foreach my $key (keys(%tmp)) {
8445: # &logthis("key $key = ".$tmp{$key});
8446: #}
8447: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8448: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8449: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8450: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8451: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8452: }
8453: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8454: my $user = "$uname:$udom";
8455: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8456: my $reply=cput('classlist',
8457: {$user =>
8458: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8459: $cdom,$cnum);
8460: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8461: &devalidate_getsection_cache($udom,$uname,$cid);
8462: } else {
8463: return 'error: '.$reply;
8464: }
8465: # Add student role to user
8466: my $uurl='/'.$cid;
8467: $uurl=~s/\_/\//g;
8468: if ($usec) {
8469: $uurl.='/'.$usec;
8470: }
8471: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8472: $selfenroll,$context);
8473: if ($result ne 'ok') {
8474: if ($old_entry{$user} ne '') {
8475: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8476: } else {
8477: $reply = &del('classlist',[$user],$cdom,$cnum);
8478: }
8479: }
8480: return $result;
8481: }
8482:
8483: sub format_name {
8484: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8485: my $name;
8486: if ($first ne 'lastname') {
8487: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8488: } else {
8489: if ($lastname=~/\S/) {
8490: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8491: $name=~s/\s+,/,/;
8492: } else {
8493: $name.= $firstname.' '.$middlename.' '.$generation;
8494: }
8495: }
8496: $name=~s/^\s+//;
8497: $name=~s/\s+$//;
8498: $name=~s/\s+/ /g;
8499: return $name;
8500: }
8501:
8502: # ------------------------------------------------- Write to course preferences
8503:
8504: sub writecoursepref {
8505: my ($courseid,%prefs)=@_;
8506: $courseid=~s/^\///;
8507: $courseid=~s/\_/\//g;
8508: my ($cdomain,$cnum)=split(/\//,$courseid);
8509: my $chome=homeserver($cnum,$cdomain);
8510: if (($chome eq '') || ($chome eq 'no_host')) {
8511: return 'error: no such course';
8512: }
8513: my $cstring='';
8514: foreach my $pref (keys(%prefs)) {
8515: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8516: }
8517: $cstring=~s/\&$//;
8518: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8519: }
8520:
8521: # ---------------------------------------------------------- Make/modify course
8522:
8523: sub createcourse {
8524: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8525: $course_owner,$crstype,$cnum,$context,$category)=@_;
8526: $url=&declutter($url);
8527: my $cid='';
8528: if ($context eq 'requestcourses') {
8529: my $can_create = 0;
8530: my ($ownername,$ownerdom) = split(':',$course_owner);
8531: if ($udom eq $ownerdom) {
8532: if (&usertools_access($ownername,$ownerdom,$category,undef,
8533: $context)) {
8534: $can_create = 1;
8535: }
8536: } else {
8537: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8538: $category);
8539: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8540: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8541: if (@curr > 0) {
8542: my @options = qw(approval validate autolimit);
8543: my $optregex = join('|',@options);
8544: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8545: $can_create = 1;
8546: }
8547: }
8548: }
8549: }
8550: if ($can_create) {
8551: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8552: unless (&allowed('ccc',$udom)) {
8553: return 'refused';
8554: }
8555: }
8556: } else {
8557: return 'refused';
8558: }
8559: } elsif (!&allowed('ccc',$udom)) {
8560: return 'refused';
8561: }
8562: # --------------------------------------------------------------- Get Unique ID
8563: my $uname;
8564: if ($cnum =~ /^$match_courseid$/) {
8565: my $chome=&homeserver($cnum,$udom,'true');
8566: if (($chome eq '') || ($chome eq 'no_host')) {
8567: $uname = $cnum;
8568: } else {
8569: $uname = &generate_coursenum($udom,$crstype);
8570: }
8571: } else {
8572: $uname = &generate_coursenum($udom,$crstype);
8573: }
8574: return $uname if ($uname =~ /^error/);
8575: # -------------------------------------------------- Check supplied server name
8576: if (!defined($course_server)) {
8577: if (defined(&domain($udom,'primary'))) {
8578: $course_server = &domain($udom,'primary');
8579: } else {
8580: $course_server = $env{'user.home'};
8581: }
8582: }
8583: my %host_servers =
8584: &Apache::lonnet::get_servers($udom,'library');
8585: unless ($host_servers{$course_server}) {
8586: return 'error: invalid home server for course: '.$course_server;
8587: }
8588: # ------------------------------------------------------------- Make the course
8589: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8590: $course_server);
8591: unless ($reply eq 'ok') { return 'error: '.$reply; }
8592: my $uhome=&homeserver($uname,$udom,'true');
8593: if (($uhome eq '') || ($uhome eq 'no_host')) {
8594: return 'error: no such course';
8595: }
8596: # ----------------------------------------------------------------- Course made
8597: # log existence
8598: my $now = time;
8599: my $newcourse = {
8600: $udom.'_'.$uname => {
8601: description => $description,
8602: inst_code => $inst_code,
8603: owner => $course_owner,
8604: type => $crstype,
8605: creator => $env{'user.name'}.':'.
8606: $env{'user.domain'},
8607: created => $now,
8608: context => $context,
8609: },
8610: };
8611: &courseidput($udom,$newcourse,$uhome,'notime');
8612: # set toplevel url
8613: my $topurl=$url;
8614: unless ($nonstandard) {
8615: # ------------------------------------------ For standard courses, make top url
8616: my $mapurl=&clutter($url);
8617: if ($mapurl eq '/res/') { $mapurl=''; }
8618: $env{'form.initmap'}=(<<ENDINITMAP);
8619: <map>
8620: <resource id="1" type="start"></resource>
8621: <resource id="2" src="$mapurl"></resource>
8622: <resource id="3" type="finish"></resource>
8623: <link index="1" from="1" to="2"></link>
8624: <link index="2" from="2" to="3"></link>
8625: </map>
8626: ENDINITMAP
8627: $topurl=&declutter(
8628: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8629: );
8630: }
8631: # ----------------------------------------------------------- Write preferences
8632: &writecoursepref($udom.'_'.$uname,
8633: ('description' => $description,
8634: 'url' => $topurl,
8635: 'internal.creator' => $env{'user.name'}.':'.
8636: $env{'user.domain'},
8637: 'internal.created' => $now,
8638: 'internal.creationcontext' => $context)
8639: );
8640: return '/'.$udom.'/'.$uname;
8641: }
8642:
8643: # ------------------------------------------------------------------- Create ID
8644: sub generate_coursenum {
8645: my ($udom,$crstype) = @_;
8646: my $domdesc = &domain($udom);
8647: return 'error: invalid domain' if ($domdesc eq '');
8648: my $first;
8649: if ($crstype eq 'Community') {
8650: $first = '0';
8651: } else {
8652: $first = int(1+rand(9));
8653: }
8654: my $uname=$first.
8655: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8656: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8657: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8658: # ----------------------------------------------- Make sure that does not exist
8659: my $uhome=&homeserver($uname,$udom,'true');
8660: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8661: if ($crstype eq 'Community') {
8662: $first = '0';
8663: } else {
8664: $first = int(1+rand(9));
8665: }
8666: $uname=$first.
8667: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8668: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8669: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8670: $uhome=&homeserver($uname,$udom,'true');
8671: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8672: return 'error: unable to generate unique course-ID';
8673: }
8674: }
8675: return $uname;
8676: }
8677:
8678: sub is_course {
8679: my ($cdom, $cnum) = scalar(@_) == 1 ?
8680: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8681:
8682: return unless $cdom and $cnum;
8683:
8684: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8685: '.');
8686:
8687: return unless exists($courses{$cdom.'_'.$cnum});
8688: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8689: }
8690:
8691: sub store_userdata {
8692: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8693: my $result;
8694: if ($datakey ne '') {
8695: if (ref($storehash) eq 'HASH') {
8696: if ($udom eq '' || $uname eq '') {
8697: $udom = $env{'user.domain'};
8698: $uname = $env{'user.name'};
8699: }
8700: my $uhome=&homeserver($uname,$udom);
8701: if (($uhome eq '') || ($uhome eq 'no_host')) {
8702: $result = 'error: no_host';
8703: } else {
8704: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8705: $storehash->{'host'} = $perlvar{'lonHostID'};
8706:
8707: my $namevalue='';
8708: foreach my $key (keys(%{$storehash})) {
8709: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8710: }
8711: $namevalue=~s/\&$//;
8712: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8713: $namevalue,$uhome);
8714: }
8715: } else {
8716: $result = 'error: data to store was not a hash reference';
8717: }
8718: } else {
8719: $result= 'error: invalid requestkey';
8720: }
8721: return $result;
8722: }
8723:
8724: # ---------------------------------------------------------- Assign Custom Role
8725:
8726: sub assigncustomrole {
8727: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8728: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8729: $end,$start,$deleteflag,$selfenroll,$context);
8730: }
8731:
8732: # ----------------------------------------------------------------- Revoke Role
8733:
8734: sub revokerole {
8735: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8736: my $now=time;
8737: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8738: }
8739:
8740: # ---------------------------------------------------------- Revoke Custom Role
8741:
8742: sub revokecustomrole {
8743: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8744: my $now=time;
8745: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8746: $deleteflag,$selfenroll,$context);
8747: }
8748:
8749: # ------------------------------------------------------------ Disk usage
8750: sub diskusage {
8751: my ($udom,$uname,$directorypath,$getpropath)=@_;
8752: $directorypath =~ s/\/$//;
8753: my $listing=&reply('du2:'.&escape($directorypath).':'
8754: .&escape($getpropath).':'.&escape($uname).':'
8755: .&escape($udom),homeserver($uname,$udom));
8756: if ($listing eq 'unknown_cmd') {
8757: if ($getpropath) {
8758: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8759: }
8760: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8761: }
8762: return $listing;
8763: }
8764:
8765: sub is_locked {
8766: my ($file_name, $domain, $user, $which) = @_;
8767: my @check;
8768: my $is_locked;
8769: push (@check,$file_name);
8770: my %locked = &get('file_permissions',\@check,
8771: $env{'user.domain'},$env{'user.name'});
8772: my ($tmp)=keys(%locked);
8773: if ($tmp=~/^error:/) { undef(%locked); }
8774:
8775: if (ref($locked{$file_name}) eq 'ARRAY') {
8776: $is_locked = 'false';
8777: foreach my $entry (@{$locked{$file_name}}) {
8778: if (ref($entry) eq 'ARRAY') {
8779: $is_locked = 'true';
8780: if (ref($which) eq 'ARRAY') {
8781: push(@{$which},$entry);
8782: } else {
8783: last;
8784: }
8785: }
8786: }
8787: } else {
8788: $is_locked = 'false';
8789: }
8790: return $is_locked;
8791: }
8792:
8793: sub declutter_portfile {
8794: my ($file) = @_;
8795: $file =~ s{^(/portfolio/|portfolio/)}{/};
8796: return $file;
8797: }
8798:
8799: # ------------------------------------------------------------- Mark as Read Only
8800:
8801: sub mark_as_readonly {
8802: my ($domain,$user,$files,$what) = @_;
8803: my %current_permissions = &dump('file_permissions',$domain,$user);
8804: my ($tmp)=keys(%current_permissions);
8805: if ($tmp=~/^error:/) { undef(%current_permissions); }
8806: foreach my $file (@{$files}) {
8807: $file = &declutter_portfile($file);
8808: push(@{$current_permissions{$file}},$what);
8809: }
8810: &put('file_permissions',\%current_permissions,$domain,$user);
8811: return;
8812: }
8813:
8814: # ------------------------------------------------------------Save Selected Files
8815:
8816: sub save_selected_files {
8817: my ($user, $path, @files) = @_;
8818: my $filename = $user."savedfiles";
8819: my @other_files = &files_not_in_path($user, $path);
8820: open (OUT, '>'.$tmpdir.$filename);
8821: foreach my $file (@files) {
8822: print (OUT $env{'form.currentpath'}.$file."\n");
8823: }
8824: foreach my $file (@other_files) {
8825: print (OUT $file."\n");
8826: }
8827: close (OUT);
8828: return 'ok';
8829: }
8830:
8831: sub clear_selected_files {
8832: my ($user) = @_;
8833: my $filename = $user."savedfiles";
8834: open (OUT, '>'.LONCAPA::tempdir().$filename);
8835: print (OUT undef);
8836: close (OUT);
8837: return ("ok");
8838: }
8839:
8840: sub files_in_path {
8841: my ($user, $path) = @_;
8842: my $filename = $user."savedfiles";
8843: my %return_files;
8844: open (IN, '<'.LONCAPA::tempdir().$filename);
8845: while (my $line_in = <IN>) {
8846: chomp ($line_in);
8847: my @paths_and_file = split (m!/!, $line_in);
8848: my $file_part = pop (@paths_and_file);
8849: my $path_part = join ('/', @paths_and_file);
8850: $path_part.='/';
8851: my $path_and_file = $path_part.$file_part;
8852: if ($path_part eq $path) {
8853: $return_files{$file_part}= 'selected';
8854: }
8855: }
8856: close (IN);
8857: return (\%return_files);
8858: }
8859:
8860: # called in portfolio select mode, to show files selected NOT in current directory
8861: sub files_not_in_path {
8862: my ($user, $path) = @_;
8863: my $filename = $user."savedfiles";
8864: my @return_files;
8865: my $path_part;
8866: open(IN, '<'.LONCAPA::.$filename);
8867: while (my $line = <IN>) {
8868: #ok, I know it's clunky, but I want it to work
8869: my @paths_and_file = split(m|/|, $line);
8870: my $file_part = pop(@paths_and_file);
8871: chomp($file_part);
8872: my $path_part = join('/', @paths_and_file);
8873: $path_part .= '/';
8874: my $path_and_file = $path_part.$file_part;
8875: if ($path_part ne $path) {
8876: push(@return_files, ($path_and_file));
8877: }
8878: }
8879: close(OUT);
8880: return (@return_files);
8881: }
8882:
8883: #----------------------------------------------Get portfolio file permissions
8884:
8885: sub get_portfile_permissions {
8886: my ($domain,$user) = @_;
8887: my %current_permissions = &dump('file_permissions',$domain,$user);
8888: my ($tmp)=keys(%current_permissions);
8889: if ($tmp=~/^error:/) { undef(%current_permissions); }
8890: return \%current_permissions;
8891: }
8892:
8893: #---------------------------------------------Get portfolio file access controls
8894:
8895: sub get_access_controls {
8896: my ($current_permissions,$group,$file) = @_;
8897: my %access;
8898: my $real_file = $file;
8899: $file =~ s/\.meta$//;
8900: if (defined($file)) {
8901: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8902: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8903: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8904: }
8905: }
8906: } else {
8907: foreach my $key (keys(%{$current_permissions})) {
8908: if ($key =~ /\0accesscontrol$/) {
8909: if (defined($group)) {
8910: if ($key !~ m-^\Q$group\E/-) {
8911: next;
8912: }
8913: }
8914: my ($fullpath) = split(/\0/,$key);
8915: if (ref($$current_permissions{$key}) eq 'HASH') {
8916: foreach my $control (keys(%{$$current_permissions{$key}})) {
8917: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8918: }
8919: }
8920: }
8921: }
8922: }
8923: return %access;
8924: }
8925:
8926: sub modify_access_controls {
8927: my ($file_name,$changes,$domain,$user)=@_;
8928: my ($outcome,$deloutcome);
8929: my %store_permissions;
8930: my %new_values;
8931: my %new_control;
8932: my %translation;
8933: my @deletions = ();
8934: my $now = time;
8935: if (exists($$changes{'activate'})) {
8936: if (ref($$changes{'activate'}) eq 'HASH') {
8937: my @newitems = sort(keys(%{$$changes{'activate'}}));
8938: my $numnew = scalar(@newitems);
8939: for (my $i=0; $i<$numnew; $i++) {
8940: my $newkey = $newitems[$i];
8941: my $newid = &Apache::loncommon::get_cgi_id();
8942: if ($newkey =~ /^\d+:/) {
8943: $newkey =~ s/^(\d+)/$newid/;
8944: $translation{$1} = $newid;
8945: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8946: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8947: $translation{$1} = $newid;
8948: }
8949: $new_values{$file_name."\0".$newkey} =
8950: $$changes{'activate'}{$newitems[$i]};
8951: $new_control{$newkey} = $now;
8952: }
8953: }
8954: }
8955: my %todelete;
8956: my %changed_items;
8957: foreach my $action ('delete','update') {
8958: if (exists($$changes{$action})) {
8959: if (ref($$changes{$action}) eq 'HASH') {
8960: foreach my $key (keys(%{$$changes{$action}})) {
8961: my ($itemnum) = ($key =~ /^([^:]+):/);
8962: if ($action eq 'delete') {
8963: $todelete{$itemnum} = 1;
8964: } else {
8965: $changed_items{$itemnum} = $key;
8966: }
8967: }
8968: }
8969: }
8970: }
8971: # get lock on access controls for file.
8972: my $lockhash = {
8973: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8974: ':'.$env{'user.domain'},
8975: };
8976: my $tries = 0;
8977: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8978:
8979: while (($gotlock ne 'ok') && $tries <3) {
8980: $tries ++;
8981: sleep 1;
8982: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8983: }
8984: if ($gotlock eq 'ok') {
8985: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8986: my ($tmp)=keys(%curr_permissions);
8987: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8988: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8989: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8990: if (ref($curr_controls) eq 'HASH') {
8991: foreach my $control_item (keys(%{$curr_controls})) {
8992: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8993: if (defined($todelete{$itemnum})) {
8994: push(@deletions,$file_name."\0".$control_item);
8995: } else {
8996: if (defined($changed_items{$itemnum})) {
8997: $new_control{$changed_items{$itemnum}} = $now;
8998: push(@deletions,$file_name."\0".$control_item);
8999: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9000: } else {
9001: $new_control{$control_item} = $$curr_controls{$control_item};
9002: }
9003: }
9004: }
9005: }
9006: }
9007: my ($group);
9008: if (&is_course($domain,$user)) {
9009: ($group,my $file) = split(/\//,$file_name,2);
9010: }
9011: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9012: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9013: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9014: # remove lock
9015: my @del_lock = ($file_name."\0".'locked_access_records');
9016: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9017: my $sqlresult =
9018: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9019: $group);
9020: } else {
9021: $outcome = "error: could not obtain lockfile\n";
9022: }
9023: return ($outcome,$deloutcome,\%new_values,\%translation);
9024: }
9025:
9026: sub make_public_indefinitely {
9027: my ($requrl) = @_;
9028: my $now = time;
9029: my $action = 'activate';
9030: my $aclnum = 0;
9031: if (&is_portfolio_url($requrl)) {
9032: my (undef,$udom,$unum,$file_name,$group) =
9033: &parse_portfolio_url($requrl);
9034: my $current_perms = &get_portfile_permissions($udom,$unum);
9035: my %access_controls = &get_access_controls($current_perms,
9036: $group,$file_name);
9037: foreach my $key (keys(%{$access_controls{$file_name}})) {
9038: my ($num,$scope,$end,$start) =
9039: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9040: if ($scope eq 'public') {
9041: if ($start <= $now && $end == 0) {
9042: $action = 'none';
9043: } else {
9044: $action = 'update';
9045: $aclnum = $num;
9046: }
9047: last;
9048: }
9049: }
9050: if ($action eq 'none') {
9051: return 'ok';
9052: } else {
9053: my %changes;
9054: my $newend = 0;
9055: my $newstart = $now;
9056: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
9057: $changes{$action}{$newkey} = {
9058: type => 'public',
9059: time => {
9060: start => $newstart,
9061: end => $newend,
9062: },
9063: };
9064: my ($outcome,$deloutcome,$new_values,$translation) =
9065: &modify_access_controls($file_name,\%changes,$udom,$unum);
9066: return $outcome;
9067: }
9068: } else {
9069: return 'invalid';
9070: }
9071: }
9072:
9073: #------------------------------------------------------Get Marked as Read Only
9074:
9075: sub get_marked_as_readonly {
9076: my ($domain,$user,$what,$group) = @_;
9077: my $current_permissions = &get_portfile_permissions($domain,$user);
9078: my @readonly_files;
9079: my $cmp1=$what;
9080: if (ref($what)) { $cmp1=join('',@{$what}) };
9081: while (my ($file_name,$value) = each(%{$current_permissions})) {
9082: if (defined($group)) {
9083: if ($file_name !~ m-^\Q$group\E/-) {
9084: next;
9085: }
9086: }
9087: if (ref($value) eq "ARRAY"){
9088: foreach my $stored_what (@{$value}) {
9089: my $cmp2=$stored_what;
9090: if (ref($stored_what) eq 'ARRAY') {
9091: $cmp2=join('',@{$stored_what});
9092: }
9093: if ($cmp1 eq $cmp2) {
9094: push(@readonly_files, $file_name);
9095: last;
9096: } elsif (!defined($what)) {
9097: push(@readonly_files, $file_name);
9098: last;
9099: }
9100: }
9101: }
9102: }
9103: return @readonly_files;
9104: }
9105: #-----------------------------------------------------------Get Marked as Read Only Hash
9106:
9107: sub get_marked_as_readonly_hash {
9108: my ($current_permissions,$group,$what) = @_;
9109: my %readonly_files;
9110: while (my ($file_name,$value) = each(%{$current_permissions})) {
9111: if (defined($group)) {
9112: if ($file_name !~ m-^\Q$group\E/-) {
9113: next;
9114: }
9115: }
9116: if (ref($value) eq "ARRAY"){
9117: foreach my $stored_what (@{$value}) {
9118: if (ref($stored_what) eq 'ARRAY') {
9119: foreach my $lock_descriptor(@{$stored_what}) {
9120: if ($lock_descriptor eq 'graded') {
9121: $readonly_files{$file_name} = 'graded';
9122: } elsif ($lock_descriptor eq 'handback') {
9123: $readonly_files{$file_name} = 'handback';
9124: } else {
9125: if (!exists($readonly_files{$file_name})) {
9126: $readonly_files{$file_name} = 'locked';
9127: }
9128: }
9129: }
9130: }
9131: }
9132: }
9133: }
9134: return %readonly_files;
9135: }
9136: # ------------------------------------------------------------ Unmark as Read Only
9137:
9138: sub unmark_as_readonly {
9139: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9140: # for portfolio submissions, $what contains [$symb,$crsid]
9141: my ($domain,$user,$what,$file_name,$group) = @_;
9142: $file_name = &declutter_portfile($file_name);
9143: my $symb_crs = $what;
9144: if (ref($what)) { $symb_crs=join('',@$what); }
9145: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9146: my ($tmp)=keys(%current_permissions);
9147: if ($tmp=~/^error:/) { undef(%current_permissions); }
9148: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9149: foreach my $file (@readonly_files) {
9150: my $clean_file = &declutter_portfile($file);
9151: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9152: my $current_locks = $current_permissions{$file};
9153: my @new_locks;
9154: my @del_keys;
9155: if (ref($current_locks) eq "ARRAY"){
9156: foreach my $locker (@{$current_locks}) {
9157: my $compare=$locker;
9158: if (ref($locker) eq 'ARRAY') {
9159: $compare=join('',@{$locker});
9160: if ($compare ne $symb_crs) {
9161: push(@new_locks, $locker);
9162: }
9163: }
9164: }
9165: if (scalar(@new_locks) > 0) {
9166: $current_permissions{$file} = \@new_locks;
9167: } else {
9168: push(@del_keys, $file);
9169: &del('file_permissions',\@del_keys, $domain, $user);
9170: delete($current_permissions{$file});
9171: }
9172: }
9173: }
9174: &put('file_permissions',\%current_permissions,$domain,$user);
9175: return;
9176: }
9177:
9178: # ------------------------------------------------------------ Directory lister
9179:
9180: sub dirlist {
9181: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9182: $uri=~s/^\///;
9183: $uri=~s/\/$//;
9184: my ($udom, $uname);
9185: if ($getuserdir) {
9186: $udom = $userdomain;
9187: $uname = $username;
9188: } else {
9189: (undef,$udom,$uname)=split(/\//,$uri);
9190: if(defined($userdomain)) {
9191: $udom = $userdomain;
9192: }
9193: if(defined($username)) {
9194: $uname = $username;
9195: }
9196: }
9197: my ($dirRoot,$listing,@listing_results);
9198:
9199: $dirRoot = $perlvar{'lonDocRoot'};
9200: if (defined($getpropath)) {
9201: $dirRoot = &propath($udom,$uname);
9202: $dirRoot =~ s/\/$//;
9203: } elsif (defined($getuserdir)) {
9204: my $subdir=$uname.'__';
9205: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9206: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9207: ."/$udom/$subdir/$uname";
9208: } elsif (defined($alternateRoot)) {
9209: $dirRoot = $alternateRoot;
9210: }
9211:
9212: if($udom) {
9213: if($uname) {
9214: my $uhome = &homeserver($uname,$udom);
9215: if ($uhome eq 'no_host') {
9216: return ([],'no_host');
9217: }
9218: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9219: .$getuserdir.':'.&escape($dirRoot)
9220: .':'.&escape($uname).':'.&escape($udom),$uhome);
9221: if ($listing eq 'unknown_cmd') {
9222: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9223: } else {
9224: @listing_results = map { &unescape($_); } split(/:/,$listing);
9225: }
9226: if ($listing eq 'unknown_cmd') {
9227: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9228: @listing_results = split(/:/,$listing);
9229: } else {
9230: @listing_results = map { &unescape($_); } split(/:/,$listing);
9231: }
9232: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9233: ($listing eq 'rejected') || ($listing eq 'refused') ||
9234: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9235: return ([],$listing);
9236: } else {
9237: return (\@listing_results);
9238: }
9239: } elsif(!$alternateRoot) {
9240: my (%allusers,%listerror);
9241: my %servers = &get_servers($udom,'library');
9242: foreach my $tryserver (keys(%servers)) {
9243: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9244: &escape($udom),$tryserver);
9245: if ($listing eq 'unknown_cmd') {
9246: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9247: $udom, $tryserver);
9248: } else {
9249: @listing_results = map { &unescape($_); } split(/:/,$listing);
9250: }
9251: if ($listing eq 'unknown_cmd') {
9252: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9253: $udom, $tryserver);
9254: @listing_results = split(/:/,$listing);
9255: } else {
9256: @listing_results =
9257: map { &unescape($_); } split(/:/,$listing);
9258: }
9259: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9260: ($listing eq 'rejected') || ($listing eq 'refused') ||
9261: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9262: $listerror{$tryserver} = $listing;
9263: } else {
9264: foreach my $line (@listing_results) {
9265: my ($entry) = split(/&/,$line,2);
9266: $allusers{$entry} = 1;
9267: }
9268: }
9269: }
9270: my @alluserslist=();
9271: foreach my $user (sort(keys(%allusers))) {
9272: push(@alluserslist,$user.'&user');
9273: }
9274: return (\@alluserslist);
9275: } else {
9276: return ([],'missing username');
9277: }
9278: } elsif(!defined($getpropath)) {
9279: my $path = $perlvar{'lonDocRoot'}.'/res/';
9280: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9281: return (\@all_domains);
9282: } else {
9283: return ([],'missing domain');
9284: }
9285: }
9286:
9287: # --------------------------------------------- GetFileTimestamp
9288: # This function utilizes dirlist and returns the date stamp for
9289: # when it was last modified. It will also return an error of -1
9290: # if an error occurs
9291:
9292: sub GetFileTimestamp {
9293: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9294: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9295: $studentName = &LONCAPA::clean_username($studentName);
9296: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9297: undef,$getuserdir);
9298: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9299: return -1;
9300: }
9301: if (ref($fileref) eq 'ARRAY') {
9302: my @stats = split('&',$fileref->[0]);
9303: # @stats contains first the filename, then the stat output
9304: return $stats[10]; # so this is 10 instead of 9.
9305: } else {
9306: return -1;
9307: }
9308: }
9309:
9310: sub stat_file {
9311: my ($uri) = @_;
9312: $uri = &clutter_with_no_wrapper($uri);
9313:
9314: my ($udom,$uname,$file);
9315: if ($uri =~ m-^/(uploaded|editupload)/-) {
9316: ($udom,$uname,$file) =
9317: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9318: $file = 'userfiles/'.$file;
9319: }
9320: if ($uri =~ m-^/res/-) {
9321: ($udom,$uname) =
9322: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9323: $file = $uri;
9324: }
9325:
9326: if (!$udom || !$uname || !$file) {
9327: # unable to handle the uri
9328: return ();
9329: }
9330: my $getpropath;
9331: if ($file =~ /^userfiles\//) {
9332: $getpropath = 1;
9333: }
9334: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9335: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9336: return ();
9337: } else {
9338: if (ref($listref) eq 'ARRAY') {
9339: my @stats = split('&',$listref->[0]);
9340: shift(@stats); #filename is first
9341: return @stats;
9342: }
9343: }
9344: return ();
9345: }
9346:
9347: # -------------------------------------------------------- Value of a Condition
9348:
9349: # gets the value of a specific preevaluated condition
9350: # stored in the string $env{user.state.<cid>}
9351: # or looks up a condition reference in the bighash and if if hasn't
9352: # already been evaluated recurses into docondval to get the value of
9353: # the condition, then memoizing it to
9354: # $env{user.state.<cid>.<condition>}
9355: sub directcondval {
9356: my $number=shift;
9357: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9358: &Apache::lonuserstate::evalstate();
9359: }
9360: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9361: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9362: } elsif ($number =~ /^_/) {
9363: my $sub_condition;
9364: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9365: &GDBM_READER(),0640)) {
9366: $sub_condition=$bighash{'conditions'.$number};
9367: untie(%bighash);
9368: }
9369: my $value = &docondval($sub_condition);
9370: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9371: return $value;
9372: }
9373: if ($env{'user.state.'.$env{'request.course.id'}}) {
9374: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9375: } else {
9376: return 2;
9377: }
9378: }
9379:
9380: # get the collection of conditions for this resource
9381: sub condval {
9382: my $condidx=shift;
9383: my $allpathcond='';
9384: foreach my $cond (split(/\|/,$condidx)) {
9385: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9386: $allpathcond.=
9387: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9388: }
9389: }
9390: $allpathcond=~s/\|$//;
9391: return &docondval($allpathcond);
9392: }
9393:
9394: #evaluates an expression of conditions
9395: sub docondval {
9396: my ($allpathcond) = @_;
9397: my $result=0;
9398: if ($env{'request.course.id'}
9399: && defined($allpathcond)) {
9400: my $operand='|';
9401: my @stack;
9402: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9403: if ($chunk eq '(') {
9404: push @stack,($operand,$result);
9405: } elsif ($chunk eq ')') {
9406: my $before=pop @stack;
9407: if (pop @stack eq '&') {
9408: $result=$result>$before?$before:$result;
9409: } else {
9410: $result=$result>$before?$result:$before;
9411: }
9412: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9413: $operand=$chunk;
9414: } else {
9415: my $new=directcondval($chunk);
9416: if ($operand eq '&') {
9417: $result=$result>$new?$new:$result;
9418: } else {
9419: $result=$result>$new?$result:$new;
9420: }
9421: }
9422: }
9423: }
9424: return $result;
9425: }
9426:
9427: # ---------------------------------------------------- Devalidate courseresdata
9428:
9429: sub devalidatecourseresdata {
9430: my ($coursenum,$coursedomain)=@_;
9431: my $hashid=$coursenum.':'.$coursedomain;
9432: &devalidate_cache_new('courseres',$hashid);
9433: }
9434:
9435:
9436: # --------------------------------------------------- Course Resourcedata Query
9437: #
9438: # Parameters:
9439: # $coursenum - Number of the course.
9440: # $coursedomain - Domain at which the course was created.
9441: # Returns:
9442: # A hash of the course parameters along (I think) with timestamps
9443: # and version info.
9444:
9445: sub get_courseresdata {
9446: my ($coursenum,$coursedomain)=@_;
9447: my $coursehom=&homeserver($coursenum,$coursedomain);
9448: my $hashid=$coursenum.':'.$coursedomain;
9449: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9450: my %dumpreply;
9451: unless (defined($cached)) {
9452: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9453: $result=\%dumpreply;
9454: my ($tmp) = keys(%dumpreply);
9455: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9456: &do_cache_new('courseres',$hashid,$result,600);
9457: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9458: return $tmp;
9459: } elsif ($tmp =~ /^(error)/) {
9460: $result=undef;
9461: &do_cache_new('courseres',$hashid,$result,600);
9462: }
9463: }
9464: return $result;
9465: }
9466:
9467: sub devalidateuserresdata {
9468: my ($uname,$udom)=@_;
9469: my $hashid="$udom:$uname";
9470: &devalidate_cache_new('userres',$hashid);
9471: }
9472:
9473: sub get_userresdata {
9474: my ($uname,$udom)=@_;
9475: #most student don\'t have any data set, check if there is some data
9476: if (&EXT_cache_status($udom,$uname)) { return undef; }
9477:
9478: my $hashid="$udom:$uname";
9479: my ($result,$cached)=&is_cached_new('userres',$hashid);
9480: if (!defined($cached)) {
9481: my %resourcedata=&dump('resourcedata',$udom,$uname);
9482: $result=\%resourcedata;
9483: &do_cache_new('userres',$hashid,$result,600);
9484: }
9485: my ($tmp)=keys(%$result);
9486: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9487: return $result;
9488: }
9489: #error 2 occurs when the .db doesn't exist
9490: if ($tmp!~/error: 2 /) {
9491: &logthis("<font color=\"blue\">WARNING:".
9492: " Trying to get resource data for ".
9493: $uname." at ".$udom.": ".
9494: $tmp."</font>");
9495: } elsif ($tmp=~/error: 2 /) {
9496: #&EXT_cache_set($udom,$uname);
9497: &do_cache_new('userres',$hashid,undef,600);
9498: undef($tmp); # not really an error so don't send it back
9499: }
9500: return $tmp;
9501: }
9502: #----------------------------------------------- resdata - return resource data
9503: # Purpose:
9504: # Return resource data for either users or for a course.
9505: # Parameters:
9506: # $name - Course/user name.
9507: # $domain - Name of the domain the user/course is registered on.
9508: # $type - Type of thing $name is (must be 'course' or 'user'
9509: # @which - Array of names of resources desired.
9510: # Returns:
9511: # The value of the first reasource in @which that is found in the
9512: # resource hash.
9513: # Exceptional Conditions:
9514: # If the $type passed in is not valid (not the string 'course' or
9515: # 'user', an undefined reference is returned.
9516: # If none of the resources are found, an undef is returned
9517: sub resdata {
9518: my ($name,$domain,$type,@which)=@_;
9519: my $result;
9520: if ($type eq 'course') {
9521: $result=&get_courseresdata($name,$domain);
9522: } elsif ($type eq 'user') {
9523: $result=&get_userresdata($name,$domain);
9524: }
9525: if (!ref($result)) { return $result; }
9526: foreach my $item (@which) {
9527: if (defined($result->{$item->[0]})) {
9528: return [$result->{$item->[0]},$item->[1]];
9529: }
9530: }
9531: return undef;
9532: }
9533:
9534: #
9535: # EXT resource caching routines
9536: #
9537:
9538: sub clear_EXT_cache_status {
9539: &delenv('cache.EXT.');
9540: }
9541:
9542: sub EXT_cache_status {
9543: my ($target_domain,$target_user) = @_;
9544: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9545: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9546: # We know already the user has no data
9547: return 1;
9548: } else {
9549: return 0;
9550: }
9551: }
9552:
9553: sub EXT_cache_set {
9554: my ($target_domain,$target_user) = @_;
9555: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9556: #&appenv({$cachename => time});
9557: }
9558:
9559: # --------------------------------------------------------- Value of a Variable
9560: sub EXT {
9561:
9562: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9563: unless ($varname) { return ''; }
9564: #get real user name/domain, courseid and symb
9565: my $courseid;
9566: my $publicuser;
9567: if ($symbparm) {
9568: $symbparm=&get_symb_from_alias($symbparm);
9569: }
9570: if (!($uname && $udom)) {
9571: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9572: if (!$symbparm) { $symbparm=$cursymb; }
9573: } else {
9574: $courseid=$env{'request.course.id'};
9575: }
9576: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9577: my $rest;
9578: if (defined($therest[0])) {
9579: $rest=join('.',@therest);
9580: } else {
9581: $rest='';
9582: }
9583:
9584: my $qualifierrest=$qualifier;
9585: if ($rest) { $qualifierrest.='.'.$rest; }
9586: my $spacequalifierrest=$space;
9587: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9588: if ($realm eq 'user') {
9589: # --------------------------------------------------------------- user.resource
9590: if ($space eq 'resource') {
9591: if ( (defined($Apache::lonhomework::parsing_a_problem)
9592: || defined($Apache::lonhomework::parsing_a_task))
9593: &&
9594: ($symbparm eq &symbread()) ) {
9595: # if we are in the middle of processing the resource the
9596: # get the value we are planning on committing
9597: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9598: return $Apache::lonhomework::results{$qualifierrest};
9599: } else {
9600: return $Apache::lonhomework::history{$qualifierrest};
9601: }
9602: } else {
9603: my %restored;
9604: if ($publicuser || $env{'request.state'} eq 'construct') {
9605: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9606: } else {
9607: %restored=&restore($symbparm,$courseid,$udom,$uname);
9608: }
9609: return $restored{$qualifierrest};
9610: }
9611: # ----------------------------------------------------------------- user.access
9612: } elsif ($space eq 'access') {
9613: # FIXME - not supporting calls for a specific user
9614: return &allowed($qualifier,$rest);
9615: # ------------------------------------------ user.preferences, user.environment
9616: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9617: if (($uname eq $env{'user.name'}) &&
9618: ($udom eq $env{'user.domain'})) {
9619: return $env{join('.',('environment',$qualifierrest))};
9620: } else {
9621: my %returnhash;
9622: if (!$publicuser) {
9623: %returnhash=&userenvironment($udom,$uname,
9624: $qualifierrest);
9625: }
9626: return $returnhash{$qualifierrest};
9627: }
9628: # ----------------------------------------------------------------- user.course
9629: } elsif ($space eq 'course') {
9630: # FIXME - not supporting calls for a specific user
9631: return $env{join('.',('request.course',$qualifier))};
9632: # ------------------------------------------------------------------- user.role
9633: } elsif ($space eq 'role') {
9634: # FIXME - not supporting calls for a specific user
9635: my ($role,$where)=split(/\./,$env{'request.role'});
9636: if ($qualifier eq 'value') {
9637: return $role;
9638: } elsif ($qualifier eq 'extent') {
9639: return $where;
9640: }
9641: # ----------------------------------------------------------------- user.domain
9642: } elsif ($space eq 'domain') {
9643: return $udom;
9644: # ------------------------------------------------------------------- user.name
9645: } elsif ($space eq 'name') {
9646: return $uname;
9647: # ---------------------------------------------------- Any other user namespace
9648: } else {
9649: my %reply;
9650: if (!$publicuser) {
9651: %reply=&get($space,[$qualifierrest],$udom,$uname);
9652: }
9653: return $reply{$qualifierrest};
9654: }
9655: } elsif ($realm eq 'query') {
9656: # ---------------------------------------------- pull stuff out of query string
9657: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9658: [$spacequalifierrest]);
9659: return $env{'form.'.$spacequalifierrest};
9660: } elsif ($realm eq 'request') {
9661: # ------------------------------------------------------------- request.browser
9662: if ($space eq 'browser') {
9663: return $env{'browser.'.$qualifier};
9664: # ------------------------------------------------------------ request.filename
9665: } else {
9666: return $env{'request.'.$spacequalifierrest};
9667: }
9668: } elsif ($realm eq 'course') {
9669: # ---------------------------------------------------------- course.description
9670: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9671: } elsif ($realm eq 'resource') {
9672:
9673: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9674: if (!$symbparm) { $symbparm=&symbread(); }
9675: }
9676:
9677: if ($space eq 'title') {
9678: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9679: return &gettitle($symbparm);
9680: }
9681:
9682: if ($space eq 'map') {
9683: my ($map) = &decode_symb($symbparm);
9684: return &symbread($map);
9685: }
9686: if ($space eq 'filename') {
9687: if ($symbparm) {
9688: return &clutter((&decode_symb($symbparm))[2]);
9689: }
9690: return &hreflocation('',$env{'request.filename'});
9691: }
9692:
9693: my ($section, $group, @groups);
9694: my ($courselevelm,$courselevel);
9695: if ($symbparm && defined($courseid) &&
9696: $courseid eq $env{'request.course.id'}) {
9697:
9698: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9699:
9700: # ----------------------------------------------------- Cascading lookup scheme
9701: my $symbp=$symbparm;
9702: my $mapp=&deversion((&decode_symb($symbp))[0]);
9703:
9704: my $symbparm=$symbp.'.'.$spacequalifierrest;
9705: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9706:
9707: if (($env{'user.name'} eq $uname) &&
9708: ($env{'user.domain'} eq $udom)) {
9709: $section=$env{'request.course.sec'};
9710: @groups = split(/:/,$env{'request.course.groups'});
9711: @groups=&sort_course_groups($courseid,@groups);
9712: } else {
9713: if (! defined($usection)) {
9714: $section=&getsection($udom,$uname,$courseid);
9715: } else {
9716: $section = $usection;
9717: }
9718: @groups = &get_users_groups($udom,$uname,$courseid);
9719: }
9720:
9721: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9722: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9723: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9724:
9725: $courselevel=$courseid.'.'.$spacequalifierrest;
9726: my $courselevelr=$courseid.'.'.$symbparm;
9727: $courselevelm=$courseid.'.'.$mapparm;
9728:
9729: # ----------------------------------------------------------- first, check user
9730:
9731: my $userreply=&resdata($uname,$udom,'user',
9732: ([$courselevelr,'resource'],
9733: [$courselevelm,'map' ],
9734: [$courselevel, 'course' ]));
9735: if (defined($userreply)) { return &get_reply($userreply); }
9736:
9737: # ------------------------------------------------ second, check some of course
9738: my $coursereply;
9739: if (@groups > 0) {
9740: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9741: $mapparm,$spacequalifierrest);
9742: if (defined($coursereply)) { return &get_reply($coursereply); }
9743: }
9744:
9745: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9746: $env{'course.'.$courseid.'.domain'},
9747: 'course',
9748: ([$seclevelr, 'resource'],
9749: [$seclevelm, 'map' ],
9750: [$seclevel, 'course' ],
9751: [$courselevelr,'resource']));
9752: if (defined($coursereply)) { return &get_reply($coursereply); }
9753:
9754: # ------------------------------------------------------ third, check map parms
9755: my %parmhash=();
9756: my $thisparm='';
9757: if (tie(%parmhash,'GDBM_File',
9758: $env{'request.course.fn'}.'_parms.db',
9759: &GDBM_READER(),0640)) {
9760: $thisparm=$parmhash{$symbparm};
9761: untie(%parmhash);
9762: }
9763: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9764: }
9765: # ------------------------------------------ fourth, look in resource metadata
9766:
9767: $spacequalifierrest=~s/\./\_/;
9768: my $filename;
9769: if (!$symbparm) { $symbparm=&symbread(); }
9770: if ($symbparm) {
9771: $filename=(&decode_symb($symbparm))[2];
9772: } else {
9773: $filename=$env{'request.filename'};
9774: }
9775: my $metadata=&metadata($filename,$spacequalifierrest);
9776: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9777: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9778: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9779:
9780: # ---------------------------------------------- fourth, look in rest of course
9781: if ($symbparm && defined($courseid) &&
9782: $courseid eq $env{'request.course.id'}) {
9783: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9784: $env{'course.'.$courseid.'.domain'},
9785: 'course',
9786: ([$courselevelm,'map' ],
9787: [$courselevel, 'course']));
9788: if (defined($coursereply)) { return &get_reply($coursereply); }
9789: }
9790: # ------------------------------------------------------------------ Cascade up
9791: unless ($space eq '0') {
9792: my @parts=split(/_/,$space);
9793: my $id=pop(@parts);
9794: my $part=join('_',@parts);
9795: if ($part eq '') { $part='0'; }
9796: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9797: $symbparm,$udom,$uname,$section,1);
9798: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9799: }
9800: if ($recurse) { return undef; }
9801: my $pack_def=&packages_tab_default($filename,$varname);
9802: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9803: # ---------------------------------------------------- Any other user namespace
9804: } elsif ($realm eq 'environment') {
9805: # ----------------------------------------------------------------- environment
9806: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9807: return $env{'environment.'.$spacequalifierrest};
9808: } else {
9809: if ($uname eq 'anonymous' && $udom eq '') {
9810: return '';
9811: }
9812: my %returnhash=&userenvironment($udom,$uname,
9813: $spacequalifierrest);
9814: return $returnhash{$spacequalifierrest};
9815: }
9816: } elsif ($realm eq 'system') {
9817: # ----------------------------------------------------------------- system.time
9818: if ($space eq 'time') {
9819: return time;
9820: }
9821: } elsif ($realm eq 'server') {
9822: # ----------------------------------------------------------------- system.time
9823: if ($space eq 'name') {
9824: return $ENV{'SERVER_NAME'};
9825: }
9826: }
9827: return '';
9828: }
9829:
9830: sub get_reply {
9831: my ($reply_value) = @_;
9832: if (ref($reply_value) eq 'ARRAY') {
9833: if (wantarray) {
9834: return @$reply_value;
9835: }
9836: return $reply_value->[0];
9837: } else {
9838: return $reply_value;
9839: }
9840: }
9841:
9842: sub check_group_parms {
9843: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9844: my @groupitems = ();
9845: my $resultitem;
9846: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9847: foreach my $group (@{$groups}) {
9848: foreach my $level (@levels) {
9849: my $item = $courseid.'.['.$group.'].'.$level->[0];
9850: push(@groupitems,[$item,$level->[1]]);
9851: }
9852: }
9853: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9854: $env{'course.'.$courseid.'.domain'},
9855: 'course',@groupitems);
9856: return $coursereply;
9857: }
9858:
9859: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9860: my ($courseid,@groups) = @_;
9861: @groups = sort(@groups);
9862: return @groups;
9863: }
9864:
9865: sub packages_tab_default {
9866: my ($uri,$varname)=@_;
9867: my (undef,$part,$name)=split(/\./,$varname);
9868:
9869: my (@extension,@specifics,$do_default);
9870: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9871: my ($pack_type,$pack_part)=split(/_/,$package,2);
9872: if ($pack_type eq 'default') {
9873: $do_default=1;
9874: } elsif ($pack_type eq 'extension') {
9875: push(@extension,[$package,$pack_type,$pack_part]);
9876: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9877: # only look at packages defaults for packages that this id is
9878: push(@specifics,[$package,$pack_type,$pack_part]);
9879: }
9880: }
9881: # first look for a package that matches the requested part id
9882: foreach my $package (@specifics) {
9883: my (undef,$pack_type,$pack_part)=@{$package};
9884: next if ($pack_part ne $part);
9885: if (defined($packagetab{"$pack_type&$name&default"})) {
9886: return $packagetab{"$pack_type&$name&default"};
9887: }
9888: }
9889: # look for any possible matching non extension_ package
9890: foreach my $package (@specifics) {
9891: my (undef,$pack_type,$pack_part)=@{$package};
9892: if (defined($packagetab{"$pack_type&$name&default"})) {
9893: return $packagetab{"$pack_type&$name&default"};
9894: }
9895: if ($pack_type eq 'part') { $pack_part='0'; }
9896: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9897: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9898: }
9899: }
9900: # look for any posible extension_ match
9901: foreach my $package (@extension) {
9902: my ($package,$pack_type)=@{$package};
9903: if (defined($packagetab{"$pack_type&$name&default"})) {
9904: return $packagetab{"$pack_type&$name&default"};
9905: }
9906: if (defined($packagetab{$package."&$name&default"})) {
9907: return $packagetab{$package."&$name&default"};
9908: }
9909: }
9910: # look for a global default setting
9911: if ($do_default && defined($packagetab{"default&$name&default"})) {
9912: return $packagetab{"default&$name&default"};
9913: }
9914: return undef;
9915: }
9916:
9917: sub add_prefix_and_part {
9918: my ($prefix,$part)=@_;
9919: my $keyroot;
9920: if (defined($prefix) && $prefix !~ /^__/) {
9921: # prefix that has a part already
9922: $keyroot=$prefix;
9923: } elsif (defined($prefix)) {
9924: # prefix that is missing a part
9925: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9926: } else {
9927: # no prefix at all
9928: if (defined($part)) { $keyroot='_'.$part; }
9929: }
9930: return $keyroot;
9931: }
9932:
9933: # ---------------------------------------------------------------- Get metadata
9934:
9935: my %metaentry;
9936: my %importedpartids;
9937: sub metadata {
9938: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9939: $uri=&declutter($uri);
9940: # if it is a non metadata possible uri return quickly
9941: if (($uri eq '') ||
9942: (($uri =~ m|^/*adm/|) &&
9943: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9944: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9945: return undef;
9946: }
9947: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9948: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9949: return undef;
9950: }
9951: my $filename=$uri;
9952: $uri=~s/\.meta$//;
9953: #
9954: # Is the metadata already cached?
9955: # Look at timestamp of caching
9956: # Everything is cached by the main uri, libraries are never directly cached
9957: #
9958: if (!defined($liburi)) {
9959: my ($result,$cached)=&is_cached_new('meta',$uri);
9960: if (defined($cached)) { return $result->{':'.$what}; }
9961: }
9962: {
9963: # Imported parts would go here
9964: my %importedids=();
9965: my @origfileimportpartids=();
9966: my $importedparts=0;
9967: #
9968: # Is this a recursive call for a library?
9969: #
9970: # if (! exists($metacache{$uri})) {
9971: # $metacache{$uri}={};
9972: # }
9973: my $cachetime = 60*60;
9974: if ($liburi) {
9975: $liburi=&declutter($liburi);
9976: $filename=$liburi;
9977: } else {
9978: &devalidate_cache_new('meta',$uri);
9979: undef(%metaentry);
9980: }
9981: my %metathesekeys=();
9982: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9983: my $metastring;
9984: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9985: my $which = &hreflocation('','/'.($liburi || $uri));
9986: $metastring =
9987: &Apache::lonnet::ssi_body($which,
9988: ('grade_target' => 'meta'));
9989: $cachetime = 1; # only want this cached in the child not long term
9990: } elsif (($uri !~ m -^(editupload)/-) &&
9991: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9992: my $file=&filelocation('',&clutter($filename));
9993: #push(@{$metaentry{$uri.'.file'}},$file);
9994: $metastring=&getfile($file);
9995: }
9996: my $parser=HTML::LCParser->new(\$metastring);
9997: my $token;
9998: undef %metathesekeys;
9999: while ($token=$parser->get_token) {
10000: if ($token->[0] eq 'S') {
10001: if (defined($token->[2]->{'package'})) {
10002: #
10003: # This is a package - get package info
10004: #
10005: my $package=$token->[2]->{'package'};
10006: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10007: if (defined($token->[2]->{'id'})) {
10008: $keyroot.='_'.$token->[2]->{'id'};
10009: }
10010: if ($metaentry{':packages'}) {
10011: $metaentry{':packages'}.=','.$package.$keyroot;
10012: } else {
10013: $metaentry{':packages'}=$package.$keyroot;
10014: }
10015: foreach my $pack_entry (keys(%packagetab)) {
10016: my $part=$keyroot;
10017: $part=~s/^\_//;
10018: if ($pack_entry=~/^\Q$package\E\&/ ||
10019: $pack_entry=~/^\Q$package\E_0\&/) {
10020: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10021: # ignore package.tab specified default values
10022: # here &package_tab_default() will fetch those
10023: if ($subp eq 'default') { next; }
10024: my $value=$packagetab{$pack_entry};
10025: my $unikey;
10026: if ($pack =~ /_0$/) {
10027: $unikey='parameter_0_'.$name;
10028: $part=0;
10029: } else {
10030: $unikey='parameter'.$keyroot.'_'.$name;
10031: }
10032: if ($subp eq 'display') {
10033: $value.=' [Part: '.$part.']';
10034: }
10035: $metaentry{':'.$unikey.'.part'}=$part;
10036: $metathesekeys{$unikey}=1;
10037: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10038: $metaentry{':'.$unikey.'.'.$subp}=$value;
10039: }
10040: if (defined($metaentry{':'.$unikey.'.default'})) {
10041: $metaentry{':'.$unikey}=
10042: $metaentry{':'.$unikey.'.default'};
10043: }
10044: }
10045: }
10046: } else {
10047: #
10048: # This is not a package - some other kind of start tag
10049: #
10050: my $entry=$token->[1];
10051: my $unikey='';
10052:
10053: if ($entry eq 'import') {
10054: #
10055: # Importing a library here
10056: #
10057: my $location=$parser->get_text('/import');
10058: my $dir=$filename;
10059: $dir=~s|[^/]*$||;
10060: $location=&filelocation($dir,$location);
10061:
10062: my $importmode=$token->[2]->{'importmode'};
10063: if ($importmode eq 'problem') {
10064: # Import as problem/response
10065: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10066: } elsif ($importmode eq 'part') {
10067: # Import as part(s)
10068: $importedparts=1;
10069: # We need to get the original file and the imported file to get the part order correct
10070: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10071: # Load and inspect original file
10072: if ($#origfileimportpartids<0) {
10073: undef(%importedpartids);
10074: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10075: my $origfile=&getfile($origfilelocation);
10076: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10077: }
10078:
10079: # Load and inspect imported file
10080: my $impfile=&getfile($location);
10081: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10082: if ($#impfilepartids>=0) {
10083: # This problem had parts
10084: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10085: } else {
10086: # Importing by turning a single problem into a problem part
10087: # It gets the import-tags ID as part-ID
10088: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10089: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10090: }
10091: } else {
10092: # Normal import
10093: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10094: if (defined($token->[2]->{'id'})) {
10095: $unikey.='_'.$token->[2]->{'id'};
10096: }
10097: }
10098:
10099: if ($depthcount<20) {
10100: my $metadata =
10101: &metadata($uri,'keys', $location,$unikey,
10102: $depthcount+1);
10103: foreach my $meta (split(',',$metadata)) {
10104: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10105: $metathesekeys{$meta}=1;
10106: }
10107:
10108: }
10109: } else {
10110: #
10111: # Not importing, some other kind of non-package, non-library start tag
10112: #
10113: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10114: if (defined($token->[2]->{'id'})) {
10115: $unikey.='_'.$token->[2]->{'id'};
10116: }
10117: if (defined($token->[2]->{'name'})) {
10118: $unikey.='_'.$token->[2]->{'name'};
10119: }
10120: $metathesekeys{$unikey}=1;
10121: foreach my $param (@{$token->[3]}) {
10122: $metaentry{':'.$unikey.'.'.$param} =
10123: $token->[2]->{$param};
10124: }
10125: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10126: my $default=$metaentry{':'.$unikey.'.default'};
10127: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10128: # only ws inside the tag, and not in default, so use default
10129: # as value
10130: $metaentry{':'.$unikey}=$default;
10131: } elsif ( $internaltext =~ /\S/ ) {
10132: # something interesting inside the tag
10133: $metaentry{':'.$unikey}=$internaltext;
10134: } else {
10135: # no interesting values, don't set a default
10136: }
10137: # end of not-a-package not-a-library import
10138: }
10139: # end of not-a-package start tag
10140: }
10141: # the next is the end of "start tag"
10142: }
10143: }
10144: my ($extension) = ($uri =~ /\.(\w+)$/);
10145: $extension = lc($extension);
10146: if ($extension eq 'htm') { $extension='html'; }
10147:
10148: foreach my $key (keys(%packagetab)) {
10149: #no specific packages #how's our extension
10150: if ($key!~/^extension_\Q$extension\E&/) { next; }
10151: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10152: \%metathesekeys);
10153: }
10154:
10155: if (!exists($metaentry{':packages'})
10156: || $packagetab{"import_defaults&extension_$extension"}) {
10157: foreach my $key (keys(%packagetab)) {
10158: #no specific packages well let's get default then
10159: if ($key!~/^default&/) { next; }
10160: &metadata_create_package_def($uri,$key,'default',
10161: \%metathesekeys);
10162: }
10163: }
10164: # are there custom rights to evaluate
10165: if ($metaentry{':copyright'} eq 'custom') {
10166:
10167: #
10168: # Importing a rights file here
10169: #
10170: unless ($depthcount) {
10171: my $location=$metaentry{':customdistributionfile'};
10172: my $dir=$filename;
10173: $dir=~s|[^/]*$||;
10174: $location=&filelocation($dir,$location);
10175: my $rights_metadata =
10176: &metadata($uri,'keys',$location,'_rights',
10177: $depthcount+1);
10178: foreach my $rights (split(',',$rights_metadata)) {
10179: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10180: $metathesekeys{$rights}=1;
10181: }
10182: }
10183: }
10184: # uniqifiy package listing
10185: my %seen;
10186: my @uniq_packages =
10187: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10188: $metaentry{':packages'} = join(',',@uniq_packages);
10189:
10190: if ($importedparts) {
10191: # We had imported parts and need to rebuild partorder
10192: $metaentry{':partorder'}='';
10193: $metathesekeys{'partorder'}=1;
10194: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10195: if ($origfileimportpartids[$index] eq 'part') {
10196: # original part, part of the problem
10197: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10198: } else {
10199: # we have imported parts at this position
10200: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10201: }
10202: }
10203: $metaentry{':partorder'}=~s/^\,//;
10204: }
10205:
10206: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10207: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10208: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10209: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10210: # this is the end of "was not already recently cached
10211: }
10212: return $metaentry{':'.$what};
10213: }
10214:
10215: sub metadata_create_package_def {
10216: my ($uri,$key,$package,$metathesekeys)=@_;
10217: my ($pack,$name,$subp)=split(/\&/,$key);
10218: if ($subp eq 'default') { next; }
10219:
10220: if (defined($metaentry{':packages'})) {
10221: $metaentry{':packages'}.=','.$package;
10222: } else {
10223: $metaentry{':packages'}=$package;
10224: }
10225: my $value=$packagetab{$key};
10226: my $unikey;
10227: $unikey='parameter_0_'.$name;
10228: $metaentry{':'.$unikey.'.part'}=0;
10229: $$metathesekeys{$unikey}=1;
10230: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10231: $metaentry{':'.$unikey.'.'.$subp}=$value;
10232: }
10233: if (defined($metaentry{':'.$unikey.'.default'})) {
10234: $metaentry{':'.$unikey}=
10235: $metaentry{':'.$unikey.'.default'};
10236: }
10237: }
10238:
10239: sub metadata_generate_part0 {
10240: my ($metadata,$metacache,$uri) = @_;
10241: my %allnames;
10242: foreach my $metakey (keys(%$metadata)) {
10243: if ($metakey=~/^parameter\_(.*)/) {
10244: my $part=$$metacache{':'.$metakey.'.part'};
10245: my $name=$$metacache{':'.$metakey.'.name'};
10246: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10247: $allnames{$name}=$part;
10248: }
10249: }
10250: }
10251: foreach my $name (keys(%allnames)) {
10252: $$metadata{"parameter_0_$name"}=1;
10253: my $key=":parameter_0_$name";
10254: $$metacache{"$key.part"}='0';
10255: $$metacache{"$key.name"}=$name;
10256: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10257: $allnames{$name}.'_'.$name.
10258: '.type'};
10259: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10260: '.display'};
10261: my $expr='[Part: '.$allnames{$name}.']';
10262: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10263: $$metacache{"$key.display"}=$olddis;
10264: }
10265: }
10266:
10267: # ------------------------------------------------------ Devalidate title cache
10268:
10269: sub devalidate_title_cache {
10270: my ($url)=@_;
10271: if (!$env{'request.course.id'}) { return; }
10272: my $symb=&symbread($url);
10273: if (!$symb) { return; }
10274: my $key=$env{'request.course.id'}."\0".$symb;
10275: &devalidate_cache_new('title',$key);
10276: }
10277:
10278: # ------------------------------------------------- Get the title of a course
10279:
10280: sub current_course_title {
10281: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10282: }
10283: # ------------------------------------------------- Get the title of a resource
10284:
10285: sub gettitle {
10286: my $urlsymb=shift;
10287: my $symb=&symbread($urlsymb);
10288: if ($symb) {
10289: my $key=$env{'request.course.id'}."\0".$symb;
10290: my ($result,$cached)=&is_cached_new('title',$key);
10291: if (defined($cached)) {
10292: return $result;
10293: }
10294: my ($map,$resid,$url)=&decode_symb($symb);
10295: my $title='';
10296: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10297: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10298: } else {
10299: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10300: &GDBM_READER(),0640)) {
10301: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10302: $title=$bighash{'title_'.$mapid.'.'.$resid};
10303: untie(%bighash);
10304: }
10305: }
10306: $title=~s/\&colon\;/\:/gs;
10307: if ($title) {
10308: # Remember both $symb and $title for dynamic metadata
10309: $accesshash{$symb.'___crstitle'}=$title;
10310: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10311: # Cache this title and then return it
10312: return &do_cache_new('title',$key,$title,600);
10313: }
10314: $urlsymb=$url;
10315: }
10316: my $title=&metadata($urlsymb,'title');
10317: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10318: return $title;
10319: }
10320:
10321: sub getdocspath {
10322: my ($symb) = @_;
10323: my $path;
10324: if ($symb) {
10325: my ($mapurl,$id,$resurl) = &decode_symb($symb);
10326: if ($resurl=~/\.(sequence|page)$/) {
10327: $mapurl=$resurl;
10328: } elsif ($resurl eq 'adm/navmaps') {
10329: $mapurl=$env{'course.'.$env{'request.course.id'}.'.url'};
10330: }
10331: my $mapresobj;
10332: my $navmap = Apache::lonnavmaps::navmap->new();
10333: if (ref($navmap)) {
10334: $mapresobj = $navmap->getResourceByUrl($mapurl);
10335: }
10336: $mapurl=~s{^.*/([^/]+)\.(\w+)$}{$1};
10337: my $type=$2;
10338: if (ref($mapresobj)) {
10339: my $pcslist = $mapresobj->map_hierarchy();
10340: if ($pcslist ne '') {
10341: foreach my $pc (split(/,/,$pcslist)) {
10342: next if ($pc <= 1);
10343: my $res = $navmap->getByMapPc($pc);
10344: if (ref($res)) {
10345: my $thisurl = $res->src();
10346: $thisurl=~s{^.*/([^/]+)\.\w+$}{$1};
10347: my $thistitle = $res->title();
10348: $path .= '&'.
10349: &Apache::lonhtmlcommon::entity_encode($thisurl).'&'.
10350: &Apache::lonhtmlcommon::entity_encode($thistitle).
10351: ':'.$res->randompick().
10352: ':'.$res->randomout().
10353: ':'.$res->encrypted().
10354: ':'.$res->randomorder().
10355: ':'.$res->is_page();
10356: }
10357: }
10358: }
10359: $path =~ s/^\&//;
10360: my $maptitle = $mapresobj->title();
10361: if ($mapurl eq 'default') {
10362: $maptitle = 'Main Course Documents';
10363: }
10364: $path .= ($path ne '')? '&' : ''.
10365: &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
10366: &Apache::lonhtmlcommon::entity_encode($maptitle).
10367: ':'.$mapresobj->randompick().
10368: ':'.$mapresobj->randomout().
10369: ':'.$mapresobj->encrypted().
10370: ':'.$mapresobj->randomorder().
10371: ':'.$mapresobj->is_page();
10372: } else {
10373: my $maptitle = &gettitle($mapurl);
10374: my $ispage;
10375: if ($mapurl =~ /\.page$/) {
10376: $ispage = 1;
10377: }
10378: if ($mapurl eq 'default') {
10379: $maptitle = 'Main Course Documents';
10380: }
10381: $path = &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
10382: &Apache::lonhtmlcommon::entity_encode($maptitle).':::::'.$ispage;
10383: }
10384: unless ($mapurl eq 'default') {
10385: $path = 'default&'.
10386: &Apache::lonhtmlcommon::entity_encode('Main Course Documents').
10387: ':::::&'.$path;
10388: }
10389: }
10390: return $path;
10391: }
10392:
10393: sub get_slot {
10394: my ($which,$cnum,$cdom)=@_;
10395: if (!$cnum || !$cdom) {
10396: (undef,my $courseid)=&whichuser();
10397: $cdom=$env{'course.'.$courseid.'.domain'};
10398: $cnum=$env{'course.'.$courseid.'.num'};
10399: }
10400: my $key=join("\0",'slots',$cdom,$cnum,$which);
10401: my %slotinfo;
10402: if (exists($remembered{$key})) {
10403: $slotinfo{$which} = $remembered{$key};
10404: } else {
10405: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10406: &Apache::lonhomework::showhash(%slotinfo);
10407: my ($tmp)=keys(%slotinfo);
10408: if ($tmp=~/^error:/) { return (); }
10409: $remembered{$key} = $slotinfo{$which};
10410: }
10411: if (ref($slotinfo{$which}) eq 'HASH') {
10412: return %{$slotinfo{$which}};
10413: }
10414: return $slotinfo{$which};
10415: }
10416:
10417: sub get_reservable_slots {
10418: my ($cnum,$cdom,$uname,$udom) = @_;
10419: my $now = time;
10420: my $reservable_info;
10421: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10422: if (exists($remembered{$key})) {
10423: $reservable_info = $remembered{$key};
10424: } else {
10425: my %resv;
10426: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10427: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10428: $reservable_info = \%resv;
10429: $remembered{$key} = $reservable_info;
10430: }
10431: return $reservable_info;
10432: }
10433:
10434: sub get_course_slots {
10435: my ($cnum,$cdom) = @_;
10436: my $hashid=$cnum.':'.$cdom;
10437: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10438: if (defined($cached)) {
10439: if (ref($result) eq 'HASH') {
10440: return %{$result};
10441: }
10442: } else {
10443: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10444: my ($tmp) = keys(%slots);
10445: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10446: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
10447: return %slots;
10448: }
10449: }
10450: return;
10451: }
10452:
10453: sub devalidate_slots_cache {
10454: my ($cnum,$cdom)=@_;
10455: my $hashid=$cnum.':'.$cdom;
10456: &devalidate_cache_new('allslots',$hashid);
10457: }
10458:
10459: sub get_coursechange {
10460: my ($cdom,$cnum) = @_;
10461: if ($cdom eq '' || $cnum eq '') {
10462: return unless ($env{'request.course.id'});
10463: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10464: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10465: }
10466: my $hashid=$cdom.'_'.$cnum;
10467: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10468: if ((defined($cached)) && ($change ne '')) {
10469: return $change;
10470: } else {
10471: my %crshash;
10472: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10473: if ($crshash{'internal.contentchange'} eq '') {
10474: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10475: if ($change eq '') {
10476: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10477: $change = $crshash{'internal.created'};
10478: }
10479: } else {
10480: $change = $crshash{'internal.contentchange'};
10481: }
10482: my $cachetime = 600;
10483: &do_cache_new('crschange',$hashid,$change,$cachetime);
10484: }
10485: return $change;
10486: }
10487:
10488: sub devalidate_coursechange_cache {
10489: my ($cnum,$cdom)=@_;
10490: my $hashid=$cnum.':'.$cdom;
10491: &devalidate_cache_new('crschange',$hashid);
10492: }
10493:
10494: # ------------------------------------------------- Update symbolic store links
10495:
10496: sub symblist {
10497: my ($mapname,%newhash)=@_;
10498: $mapname=&deversion(&declutter($mapname));
10499: my %hash;
10500: if (($env{'request.course.fn'}) && (%newhash)) {
10501: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10502: &GDBM_WRCREAT(),0640)) {
10503: foreach my $url (keys(%newhash)) {
10504: next if ($url eq 'last_known'
10505: && $env{'form.no_update_last_known'});
10506: $hash{declutter($url)}=&encode_symb($mapname,
10507: $newhash{$url}->[1],
10508: $newhash{$url}->[0]);
10509: }
10510: if (untie(%hash)) {
10511: return 'ok';
10512: }
10513: }
10514: }
10515: return 'error';
10516: }
10517:
10518: # --------------------------------------------------------------- Verify a symb
10519:
10520: sub symbverify {
10521: my ($symb,$thisurl,$encstate)=@_;
10522: my $thisfn=$thisurl;
10523: $thisfn=&declutter($thisfn);
10524: # direct jump to resource in page or to a sequence - will construct own symbs
10525: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10526: # check URL part
10527: my ($map,$resid,$url)=&decode_symb($symb);
10528:
10529: unless ($url eq $thisfn) { return 0; }
10530:
10531: $symb=&symbclean($symb);
10532: $thisurl=&deversion($thisurl);
10533: $thisfn=&deversion($thisfn);
10534:
10535: my %bighash;
10536: my $okay=0;
10537:
10538: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10539: &GDBM_READER(),0640)) {
10540: my $noclutter;
10541: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10542: $thisurl =~ s/\?.+$//;
10543: if ($map =~ m{^uploaded/.+\.page$}) {
10544: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
10545: $thisurl =~ s{^\Qhttp://https://\E}{https://};
10546: $noclutter = 1;
10547: }
10548: }
10549: my $ids;
10550: if ($noclutter) {
10551: $ids=$bighash{'ids_'.$thisurl};
10552: } else {
10553: $ids=$bighash{'ids_'.&clutter($thisurl)};
10554: }
10555: unless ($ids) {
10556: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10557: $ids=$bighash{$idkey};
10558: }
10559: if ($ids) {
10560: # ------------------------------------------------------------------- Has ID(s)
10561: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10562: $symb =~ s/\?.+$//;
10563: }
10564: foreach my $id (split(/\,/,$ids)) {
10565: my ($mapid,$resid)=split(/\./,$id);
10566: if (
10567: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10568: eq $symb) {
10569: if (ref($encstate)) {
10570: $$encstate = $bighash{'encrypted_'.$id};
10571: }
10572: if (($env{'request.role.adv'}) ||
10573: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10574: ($thisurl eq '/adm/navmaps')) {
10575: $okay=1;
10576: last;
10577: }
10578: }
10579: }
10580: }
10581: untie(%bighash);
10582: }
10583: return $okay;
10584: }
10585:
10586: # --------------------------------------------------------------- Clean-up symb
10587:
10588: sub symbclean {
10589: my $symb=shift;
10590: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10591: # remove version from map
10592: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10593:
10594: # remove version from URL
10595: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10596:
10597: # remove wrapper
10598:
10599: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10600: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10601: return $symb;
10602: }
10603:
10604: # ---------------------------------------------- Split symb to find map and url
10605:
10606: sub encode_symb {
10607: my ($map,$resid,$url)=@_;
10608: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10609: }
10610:
10611: sub decode_symb {
10612: my $symb=shift;
10613: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10614: my ($map,$resid,$url)=split(/___/,$symb);
10615: return (&fixversion($map),$resid,&fixversion($url));
10616: }
10617:
10618: sub fixversion {
10619: my $fn=shift;
10620: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10621: my %bighash;
10622: my $uri=&clutter($fn);
10623: my $key=$env{'request.course.id'}.'_'.$uri;
10624: # is this cached?
10625: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10626: if (defined($cached)) { return $result; }
10627: # unfortunately not cached, or expired
10628: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10629: &GDBM_READER(),0640)) {
10630: if ($bighash{'version_'.$uri}) {
10631: my $version=$bighash{'version_'.$uri};
10632: unless (($version eq 'mostrecent') ||
10633: ($version==&getversion($uri))) {
10634: $uri=~s/\.(\w+)$/\.$version\.$1/;
10635: }
10636: }
10637: untie %bighash;
10638: }
10639: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10640: }
10641:
10642: sub deversion {
10643: my $url=shift;
10644: $url=~s/\.\d+\.(\w+)$/\.$1/;
10645: return $url;
10646: }
10647:
10648: # ------------------------------------------------------ Return symb list entry
10649:
10650: sub symbread {
10651: my ($thisfn,$donotrecurse)=@_;
10652: my $cache_str;
10653: if ($thisfn ne '') {
10654: $cache_str='request.symbread.cached.'.$thisfn;
10655: if ($env{$cache_str} ne '') {
10656: return $env{$cache_str};
10657: }
10658: } else {
10659: # no filename provided? try from environment
10660: if ($env{'request.symb'}) {
10661: return $env{$cache_str}=&symbclean($env{'request.symb'});
10662: }
10663: $thisfn=$env{'request.filename'};
10664: }
10665: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10666: # is that filename actually a symb? Verify, clean, and return
10667: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10668: if (&symbverify($thisfn,$1)) {
10669: return $env{$cache_str}=&symbclean($thisfn);
10670: }
10671: }
10672: $thisfn=declutter($thisfn);
10673: my %hash;
10674: my %bighash;
10675: my $syval='';
10676: if (($env{'request.course.fn'}) && ($thisfn)) {
10677: my $targetfn = $thisfn;
10678: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10679: $targetfn = 'adm/wrapper/'.$thisfn;
10680: }
10681: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10682: $targetfn=$1;
10683: }
10684: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10685: &GDBM_READER(),0640)) {
10686: $syval=$hash{$targetfn};
10687: untie(%hash);
10688: }
10689: # ---------------------------------------------------------- There was an entry
10690: if ($syval) {
10691: #unless ($syval=~/\_\d+$/) {
10692: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10693: #&appenv({'request.ambiguous' => $thisfn});
10694: #return $env{$cache_str}='';
10695: #}
10696: #$syval.=$1;
10697: #}
10698: } else {
10699: # ------------------------------------------------------- Was not in symb table
10700: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10701: &GDBM_READER(),0640)) {
10702: # ---------------------------------------------- Get ID(s) for current resource
10703: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10704: unless ($ids) {
10705: $ids=$bighash{'ids_/'.$thisfn};
10706: }
10707: unless ($ids) {
10708: # alias?
10709: $ids=$bighash{'mapalias_'.$thisfn};
10710: }
10711: if ($ids) {
10712: # ------------------------------------------------------------------- Has ID(s)
10713: my @possibilities=split(/\,/,$ids);
10714: if ($#possibilities==0) {
10715: # ----------------------------------------------- There is only one possibility
10716: my ($mapid,$resid)=split(/\./,$ids);
10717: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10718: $resid,$thisfn);
10719: } elsif (!$donotrecurse) {
10720: # ------------------------------------------ There is more than one possibility
10721: my $realpossible=0;
10722: foreach my $id (@possibilities) {
10723: my $file=$bighash{'src_'.$id};
10724: if (&allowed('bre',$file)) {
10725: my ($mapid,$resid)=split(/\./,$id);
10726: if ($bighash{'map_type_'.$mapid} ne 'page') {
10727: $realpossible++;
10728: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10729: $resid,$thisfn);
10730: }
10731: }
10732: }
10733: if ($realpossible!=1) { $syval=''; }
10734: } else {
10735: $syval='';
10736: }
10737: }
10738: untie(%bighash)
10739: }
10740: }
10741: if ($syval) {
10742: return $env{$cache_str}=$syval;
10743: }
10744: }
10745: &appenv({'request.ambiguous' => $thisfn});
10746: return $env{$cache_str}='';
10747: }
10748:
10749: # ---------------------------------------------------------- Return random seed
10750:
10751: sub numval {
10752: my $txt=shift;
10753: $txt=~tr/A-J/0-9/;
10754: $txt=~tr/a-j/0-9/;
10755: $txt=~tr/K-T/0-9/;
10756: $txt=~tr/k-t/0-9/;
10757: $txt=~tr/U-Z/0-5/;
10758: $txt=~tr/u-z/0-5/;
10759: $txt=~s/\D//g;
10760: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10761: return int($txt);
10762: }
10763:
10764: sub numval2 {
10765: my $txt=shift;
10766: $txt=~tr/A-J/0-9/;
10767: $txt=~tr/a-j/0-9/;
10768: $txt=~tr/K-T/0-9/;
10769: $txt=~tr/k-t/0-9/;
10770: $txt=~tr/U-Z/0-5/;
10771: $txt=~tr/u-z/0-5/;
10772: $txt=~s/\D//g;
10773: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10774: my $total;
10775: foreach my $val (@txts) { $total+=$val; }
10776: if ($_64bit) { if ($total > 2**32) { return -1; } }
10777: return int($total);
10778: }
10779:
10780: sub numval3 {
10781: use integer;
10782: my $txt=shift;
10783: $txt=~tr/A-J/0-9/;
10784: $txt=~tr/a-j/0-9/;
10785: $txt=~tr/K-T/0-9/;
10786: $txt=~tr/k-t/0-9/;
10787: $txt=~tr/U-Z/0-5/;
10788: $txt=~tr/u-z/0-5/;
10789: $txt=~s/\D//g;
10790: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10791: my $total;
10792: foreach my $val (@txts) { $total+=$val; }
10793: if ($_64bit) { $total=(($total<<32)>>32); }
10794: return $total;
10795: }
10796:
10797: sub digest {
10798: my ($data)=@_;
10799: my $digest=&Digest::MD5::md5($data);
10800: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10801: my ($e,$f);
10802: {
10803: use integer;
10804: $e=($a+$b);
10805: $f=($c+$d);
10806: if ($_64bit) {
10807: $e=(($e<<32)>>32);
10808: $f=(($f<<32)>>32);
10809: }
10810: }
10811: if (wantarray) {
10812: return ($e,$f);
10813: } else {
10814: my $g;
10815: {
10816: use integer;
10817: $g=($e+$f);
10818: if ($_64bit) {
10819: $g=(($g<<32)>>32);
10820: }
10821: }
10822: return $g;
10823: }
10824: }
10825:
10826: sub latest_rnd_algorithm_id {
10827: return '64bit5';
10828: }
10829:
10830: sub get_rand_alg {
10831: my ($courseid)=@_;
10832: if (!$courseid) { $courseid=(&whichuser())[1]; }
10833: if ($courseid) {
10834: return $env{"course.$courseid.rndseed"};
10835: }
10836: return &latest_rnd_algorithm_id();
10837: }
10838:
10839: sub validCODE {
10840: my ($CODE)=@_;
10841: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10842: return 0;
10843: }
10844:
10845: sub getCODE {
10846: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10847: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10848: defined($Apache::lonhomework::parsing_a_task) ) &&
10849: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10850: return $Apache::lonhomework::history{'resource.CODE'};
10851: }
10852: return undef;
10853: }
10854: #
10855: # Determines the random seed for a specific context:
10856: #
10857: # parameters:
10858: # symb - in course context the symb for the seed.
10859: # course_id - The course id of the form domain_coursenum.
10860: # domain - Domain for the user.
10861: # course - Course for the user.
10862: # cenv - environment of the course.
10863: #
10864: # NOTE:
10865: # All parameters are picked out of the environment if missing
10866: # or not defined.
10867: # If a symb cannot be determined the current time is used instead.
10868: #
10869: # For a given well defined symb, courside, domain, username,
10870: # and course environment, the seed is reproducible.
10871: #
10872: sub rndseed {
10873: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10874: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10875: if (!defined($symb)) {
10876: unless ($symb=$wsymb) { return time; }
10877: }
10878: if (!defined $courseid) {
10879: $courseid=$wcourseid;
10880: }
10881: if (!defined $domain) { $domain=$wdomain; }
10882: if (!defined $username) { $username=$wusername }
10883:
10884: my $which;
10885: if (defined($cenv->{'rndseed'})) {
10886: $which = $cenv->{'rndseed'};
10887: } else {
10888: $which =&get_rand_alg($courseid);
10889: }
10890: if (defined(&getCODE())) {
10891:
10892: if ($which eq '64bit5') {
10893: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10894: } elsif ($which eq '64bit4') {
10895: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10896: } else {
10897: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10898: }
10899: } elsif ($which eq '64bit5') {
10900: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10901: } elsif ($which eq '64bit4') {
10902: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10903: } elsif ($which eq '64bit3') {
10904: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10905: } elsif ($which eq '64bit2') {
10906: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10907: } elsif ($which eq '64bit') {
10908: return &rndseed_64bit($symb,$courseid,$domain,$username);
10909: }
10910: return &rndseed_32bit($symb,$courseid,$domain,$username);
10911: }
10912:
10913: sub rndseed_32bit {
10914: my ($symb,$courseid,$domain,$username)=@_;
10915: {
10916: use integer;
10917: my $symbchck=unpack("%32C*",$symb) << 27;
10918: my $symbseed=numval($symb) << 22;
10919: my $namechck=unpack("%32C*",$username) << 17;
10920: my $nameseed=numval($username) << 12;
10921: my $domainseed=unpack("%32C*",$domain) << 7;
10922: my $courseseed=unpack("%32C*",$courseid);
10923: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10924: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10925: #&logthis("rndseed :$num:$symb");
10926: if ($_64bit) { $num=(($num<<32)>>32); }
10927: return $num;
10928: }
10929: }
10930:
10931: sub rndseed_64bit {
10932: my ($symb,$courseid,$domain,$username)=@_;
10933: {
10934: use integer;
10935: my $symbchck=unpack("%32S*",$symb) << 21;
10936: my $symbseed=numval($symb) << 10;
10937: my $namechck=unpack("%32S*",$username);
10938:
10939: my $nameseed=numval($username) << 21;
10940: my $domainseed=unpack("%32S*",$domain) << 10;
10941: my $courseseed=unpack("%32S*",$courseid);
10942:
10943: my $num1=$symbchck+$symbseed+$namechck;
10944: my $num2=$nameseed+$domainseed+$courseseed;
10945: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10946: #&logthis("rndseed :$num:$symb");
10947: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10948: return "$num1,$num2";
10949: }
10950: }
10951:
10952: sub rndseed_64bit2 {
10953: my ($symb,$courseid,$domain,$username)=@_;
10954: {
10955: use integer;
10956: # strings need to be an even # of cahracters long, it it is odd the
10957: # last characters gets thrown away
10958: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10959: my $symbseed=numval($symb) << 10;
10960: my $namechck=unpack("%32S*",$username.' ');
10961:
10962: my $nameseed=numval($username) << 21;
10963: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10964: my $courseseed=unpack("%32S*",$courseid.' ');
10965:
10966: my $num1=$symbchck+$symbseed+$namechck;
10967: my $num2=$nameseed+$domainseed+$courseseed;
10968: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10969: #&logthis("rndseed :$num:$symb");
10970: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10971: return "$num1,$num2";
10972: }
10973: }
10974:
10975: sub rndseed_64bit3 {
10976: my ($symb,$courseid,$domain,$username)=@_;
10977: {
10978: use integer;
10979: # strings need to be an even # of cahracters long, it it is odd the
10980: # last characters gets thrown away
10981: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10982: my $symbseed=numval2($symb) << 10;
10983: my $namechck=unpack("%32S*",$username.' ');
10984:
10985: my $nameseed=numval2($username) << 21;
10986: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10987: my $courseseed=unpack("%32S*",$courseid.' ');
10988:
10989: my $num1=$symbchck+$symbseed+$namechck;
10990: my $num2=$nameseed+$domainseed+$courseseed;
10991: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10992: #&logthis("rndseed :$num1:$num2:$_64bit");
10993: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10994:
10995: return "$num1:$num2";
10996: }
10997: }
10998:
10999: sub rndseed_64bit4 {
11000: my ($symb,$courseid,$domain,$username)=@_;
11001: {
11002: use integer;
11003: # strings need to be an even # of cahracters long, it it is odd the
11004: # last characters gets thrown away
11005: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11006: my $symbseed=numval3($symb) << 10;
11007: my $namechck=unpack("%32S*",$username.' ');
11008:
11009: my $nameseed=numval3($username) << 21;
11010: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11011: my $courseseed=unpack("%32S*",$courseid.' ');
11012:
11013: my $num1=$symbchck+$symbseed+$namechck;
11014: my $num2=$nameseed+$domainseed+$courseseed;
11015: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11016: #&logthis("rndseed :$num1:$num2:$_64bit");
11017: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11018:
11019: return "$num1:$num2";
11020: }
11021: }
11022:
11023: sub rndseed_64bit5 {
11024: my ($symb,$courseid,$domain,$username)=@_;
11025: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11026: return "$num1:$num2";
11027: }
11028:
11029: sub rndseed_CODE_64bit {
11030: my ($symb,$courseid,$domain,$username)=@_;
11031: {
11032: use integer;
11033: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11034: my $symbseed=numval2($symb);
11035: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11036: my $CODEseed=numval(&getCODE());
11037: my $courseseed=unpack("%32S*",$courseid.' ');
11038: my $num1=$symbseed+$CODEchck;
11039: my $num2=$CODEseed+$courseseed+$symbchck;
11040: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11041: #&logthis("rndseed :$num1:$num2:$symb");
11042: if ($_64bit) { $num1=(($num1<<32)>>32); }
11043: if ($_64bit) { $num2=(($num2<<32)>>32); }
11044: return "$num1:$num2";
11045: }
11046: }
11047:
11048: sub rndseed_CODE_64bit4 {
11049: my ($symb,$courseid,$domain,$username)=@_;
11050: {
11051: use integer;
11052: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11053: my $symbseed=numval3($symb);
11054: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11055: my $CODEseed=numval3(&getCODE());
11056: my $courseseed=unpack("%32S*",$courseid.' ');
11057: my $num1=$symbseed+$CODEchck;
11058: my $num2=$CODEseed+$courseseed+$symbchck;
11059: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11060: #&logthis("rndseed :$num1:$num2:$symb");
11061: if ($_64bit) { $num1=(($num1<<32)>>32); }
11062: if ($_64bit) { $num2=(($num2<<32)>>32); }
11063: return "$num1:$num2";
11064: }
11065: }
11066:
11067: sub rndseed_CODE_64bit5 {
11068: my ($symb,$courseid,$domain,$username)=@_;
11069: my $code = &getCODE();
11070: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11071: return "$num1:$num2";
11072: }
11073:
11074: sub setup_random_from_rndseed {
11075: my ($rndseed)=@_;
11076: if ($rndseed =~/([,:])/) {
11077: my ($num1,$num2)=split(/[,:]/,$rndseed);
11078: &Math::Random::random_set_seed(abs($num1),abs($num2));
11079: } else {
11080: &Math::Random::random_set_seed_from_phrase($rndseed);
11081: }
11082: }
11083:
11084: sub latest_receipt_algorithm_id {
11085: return 'receipt3';
11086: }
11087:
11088: sub recunique {
11089: my $fucourseid=shift;
11090: my $unique;
11091: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11092: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11093: $unique=$env{"course.$fucourseid.internal.encseed"};
11094: } else {
11095: $unique=$perlvar{'lonReceipt'};
11096: }
11097: return unpack("%32C*",$unique);
11098: }
11099:
11100: sub recprefix {
11101: my $fucourseid=shift;
11102: my $prefix;
11103: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11104: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11105: $prefix=$env{"course.$fucourseid.internal.encpref"};
11106: } else {
11107: $prefix=$perlvar{'lonHostID'};
11108: }
11109: return unpack("%32C*",$prefix);
11110: }
11111:
11112: sub ireceipt {
11113: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11114:
11115: my $return =&recprefix($fucourseid).'-';
11116:
11117: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11118: $env{'request.state'} eq 'construct') {
11119: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11120: return $return;
11121: }
11122:
11123: my $cuname=unpack("%32C*",$funame);
11124: my $cudom=unpack("%32C*",$fudom);
11125: my $cucourseid=unpack("%32C*",$fucourseid);
11126: my $cusymb=unpack("%32C*",$fusymb);
11127: my $cunique=&recunique($fucourseid);
11128: my $cpart=unpack("%32S*",$part);
11129: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11130:
11131: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11132:
11133: $return.= ($cunique%$cuname+
11134: $cunique%$cudom+
11135: $cusymb%$cuname+
11136: $cusymb%$cudom+
11137: $cucourseid%$cuname+
11138: $cucourseid%$cudom+
11139: $cpart%$cuname+
11140: $cpart%$cudom);
11141: } else {
11142: $return.= ($cunique%$cuname+
11143: $cunique%$cudom+
11144: $cusymb%$cuname+
11145: $cusymb%$cudom+
11146: $cucourseid%$cuname+
11147: $cucourseid%$cudom);
11148: }
11149: return $return;
11150: }
11151:
11152: sub receipt {
11153: my ($part)=@_;
11154: my ($symb,$courseid,$domain,$name) = &whichuser();
11155: return &ireceipt($name,$domain,$courseid,$symb,$part);
11156: }
11157:
11158: sub whichuser {
11159: my ($passedsymb)=@_;
11160: my ($symb,$courseid,$domain,$name,$publicuser);
11161: if (defined($env{'form.grade_symb'})) {
11162: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11163: my $allowed=&allowed('vgr',$tmp_courseid);
11164: if (!$allowed &&
11165: exists($env{'request.course.sec'}) &&
11166: $env{'request.course.sec'} !~ /^\s*$/) {
11167: $allowed=&allowed('vgr',$tmp_courseid.
11168: '/'.$env{'request.course.sec'});
11169: }
11170: if ($allowed) {
11171: ($symb)=&get_env_multiple('form.grade_symb');
11172: $courseid=$tmp_courseid;
11173: ($domain)=&get_env_multiple('form.grade_domain');
11174: ($name)=&get_env_multiple('form.grade_username');
11175: return ($symb,$courseid,$domain,$name,$publicuser);
11176: }
11177: }
11178: if (!$passedsymb) {
11179: $symb=&symbread();
11180: } else {
11181: $symb=$passedsymb;
11182: }
11183: $courseid=$env{'request.course.id'};
11184: $domain=$env{'user.domain'};
11185: $name=$env{'user.name'};
11186: if ($name eq 'public' && $domain eq 'public') {
11187: if (!defined($env{'form.username'})) {
11188: $env{'form.username'}.=time.rand(10000000);
11189: }
11190: $name.=$env{'form.username'};
11191: }
11192: return ($symb,$courseid,$domain,$name,$publicuser);
11193:
11194: }
11195:
11196: # ------------------------------------------------------------ Serves up a file
11197: # returns either the contents of the file or
11198: # -1 if the file doesn't exist
11199: #
11200: # if the target is a file that was uploaded via DOCS,
11201: # a check will be made to see if a current copy exists on the local server,
11202: # if it does this will be served, otherwise a copy will be retrieved from
11203: # the home server for the course and stored in /home/httpd/html/userfiles on
11204: # the local server.
11205:
11206: sub getfile {
11207: my ($file) = @_;
11208: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11209: &repcopy($file);
11210: return &readfile($file);
11211: }
11212:
11213: sub repcopy_userfile {
11214: my ($file)=@_;
11215: my $londocroot = $perlvar{'lonDocRoot'};
11216: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11217: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11218: my ($cdom,$cnum,$filename) =
11219: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11220: my $uri="/uploaded/$cdom/$cnum/$filename";
11221: if (-e "$file") {
11222: # we already have a local copy, check it out
11223: my @fileinfo = stat($file);
11224: my $rtncode;
11225: my $info;
11226: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11227: if ($lwpresp ne 'ok') {
11228: # there is no such file anymore, even though we had a local copy
11229: if ($rtncode eq '404') {
11230: unlink($file);
11231: }
11232: return -1;
11233: }
11234: if ($info < $fileinfo[9]) {
11235: # nice, the file we have is up-to-date, just say okay
11236: return 'ok';
11237: } else {
11238: # the file is outdated, get rid of it
11239: unlink($file);
11240: }
11241: }
11242: # one way or the other, at this point, we don't have the file
11243: # construct the correct path for the file
11244: my @parts = ($cdom,$cnum);
11245: if ($filename =~ m|^(.+)/[^/]+$|) {
11246: push @parts, split(/\//,$1);
11247: }
11248: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11249: foreach my $part (@parts) {
11250: $path .= '/'.$part;
11251: if (!-e $path) {
11252: mkdir($path,0770);
11253: }
11254: }
11255: # now the path exists for sure
11256: # get a user agent
11257: my $ua=new LWP::UserAgent;
11258: my $transferfile=$file.'.in.transfer';
11259: # FIXME: this should flock
11260: if (-e $transferfile) { return 'ok'; }
11261: my $request;
11262: $uri=~s/^\///;
11263: my $homeserver = &homeserver($cnum,$cdom);
11264: my $protocol = $protocol{$homeserver};
11265: $protocol = 'http' if ($protocol ne 'https');
11266: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11267: my $response=$ua->request($request,$transferfile);
11268: # did it work?
11269: if ($response->is_error()) {
11270: unlink($transferfile);
11271: &logthis("Userfile repcopy failed for $uri");
11272: return -1;
11273: }
11274: # worked, rename the transfer file
11275: rename($transferfile,$file);
11276: return 'ok';
11277: }
11278:
11279: sub tokenwrapper {
11280: my $uri=shift;
11281: $uri=~s|^https?\://([^/]+)||;
11282: $uri=~s|^/||;
11283: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11284: my $token=$1;
11285: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11286: if ($udom && $uname && $file) {
11287: $file=~s|(\?\.*)*$||;
11288: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11289: my $homeserver = &homeserver($uname,$udom);
11290: my $protocol = $protocol{$homeserver};
11291: $protocol = 'http' if ($protocol ne 'https');
11292: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11293: (($uri=~/\?/)?'&':'?').'token='.$token.
11294: '&tokenissued='.$perlvar{'lonHostID'};
11295: } else {
11296: return '/adm/notfound.html';
11297: }
11298: }
11299:
11300: # call with reqtype HEAD: get last modification time
11301: # call with reqtype GET: get the file contents
11302: # Do not call this with reqtype GET for large files! It loads everything into memory
11303: #
11304: sub getuploaded {
11305: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11306: $uri=~s/^\///;
11307: my $homeserver = &homeserver($cnum,$cdom);
11308: my $protocol = $protocol{$homeserver};
11309: $protocol = 'http' if ($protocol ne 'https');
11310: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11311: my $ua=new LWP::UserAgent;
11312: my $request=new HTTP::Request($reqtype,$uri);
11313: my $response=$ua->request($request);
11314: $$rtncode = $response->code;
11315: if (! $response->is_success()) {
11316: return 'failed';
11317: }
11318: if ($reqtype eq 'HEAD') {
11319: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11320: } elsif ($reqtype eq 'GET') {
11321: $$info = $response->content;
11322: }
11323: return 'ok';
11324: }
11325:
11326: sub readfile {
11327: my $file = shift;
11328: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11329: my $fh;
11330: open($fh,"<$file");
11331: my $a='';
11332: while (my $line = <$fh>) { $a .= $line; }
11333: return $a;
11334: }
11335:
11336: sub filelocation {
11337: my ($dir,$file) = @_;
11338: my $location;
11339: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11340:
11341: if ($file =~ m-^/adm/-) {
11342: $file=~s-^/adm/wrapper/-/-;
11343: $file=~s-^/adm/coursedocs/showdoc/-/-;
11344: }
11345:
11346: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11347: $location = $file;
11348: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11349: my ($udom,$uname,$filename)=
11350: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11351: my $home=&homeserver($uname,$udom);
11352: my $is_me=0;
11353: my @ids=¤t_machine_ids();
11354: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11355: if ($is_me) {
11356: $location=propath($udom,$uname).'/userfiles/'.$filename;
11357: } else {
11358: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11359: $udom.'/'.$uname.'/'.$filename;
11360: }
11361: } elsif ($file =~ m-^/adm/-) {
11362: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11363: } else {
11364: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11365: $file=~s:^/(res|priv)/:/:;
11366: my $space=$1;
11367: if ( !( $file =~ m:^/:) ) {
11368: $location = $dir. '/'.$file;
11369: } else {
11370: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11371: }
11372: }
11373: $location=~s://+:/:g; # remove duplicate /
11374: while ($location=~m{/\.\./}) {
11375: if ($location =~ m{/[^/]+/\.\./}) {
11376: $location=~ s{/[^/]+/\.\./}{/}g;
11377: } else {
11378: $location=~ s{/\.\./}{/}g;
11379: }
11380: } #remove dir/..
11381: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11382: return $location;
11383: }
11384:
11385: sub hreflocation {
11386: my ($dir,$file)=@_;
11387: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11388: $file=filelocation($dir,$file);
11389: } elsif ($file=~m-^/adm/-) {
11390: $file=~s-^/adm/wrapper/-/-;
11391: $file=~s-^/adm/coursedocs/showdoc/-/-;
11392: }
11393: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11394: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11395: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11396: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11397: {/uploaded/$1/$2/}x;
11398: }
11399: if ($file=~ m{^/userfiles/}) {
11400: $file =~ s{^/userfiles/}{/uploaded/};
11401: }
11402: return $file;
11403: }
11404:
11405:
11406:
11407:
11408:
11409: sub current_machine_domains {
11410: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11411: }
11412:
11413: sub machine_domains {
11414: my ($hostname) = @_;
11415: my @domains;
11416: my %hostname = &all_hostnames();
11417: while( my($id, $name) = each(%hostname)) {
11418: # &logthis("-$id-$name-$hostname-");
11419: if ($hostname eq $name) {
11420: push(@domains,&host_domain($id));
11421: }
11422: }
11423: return @domains;
11424: }
11425:
11426: sub current_machine_ids {
11427: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11428: }
11429:
11430: sub machine_ids {
11431: my ($hostname) = @_;
11432: $hostname ||= &hostname($perlvar{'lonHostID'});
11433: my @ids;
11434: my %name_to_host = &all_names();
11435: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11436: return @{ $name_to_host{$hostname} };
11437: }
11438: return;
11439: }
11440:
11441: sub additional_machine_domains {
11442: my @domains;
11443: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11444: while( my $line = <$fh>) {
11445: $line =~ s/\s//g;
11446: push(@domains,$line);
11447: }
11448: return @domains;
11449: }
11450:
11451: sub default_login_domain {
11452: my $domain = $perlvar{'lonDefDomain'};
11453: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11454: foreach my $posdom (¤t_machine_domains(),
11455: &additional_machine_domains()) {
11456: if (lc($posdom) eq lc($testdomain)) {
11457: $domain=$posdom;
11458: last;
11459: }
11460: }
11461: return $domain;
11462: }
11463:
11464: # ------------------------------------------------------------- Declutters URLs
11465:
11466: sub declutter {
11467: my $thisfn=shift;
11468: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11469: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11470: $thisfn=~s/^\///;
11471: $thisfn=~s|^adm/wrapper/||;
11472: $thisfn=~s|^adm/coursedocs/showdoc/||;
11473: $thisfn=~s/^res\///;
11474: $thisfn=~s/^priv\///;
11475: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11476: $thisfn=~s/\?.+$//;
11477: }
11478: return $thisfn;
11479: }
11480:
11481: # ------------------------------------------------------------- Clutter up URLs
11482:
11483: sub clutter {
11484: my $thisfn='/'.&declutter(shift);
11485: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11486: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11487: $thisfn='/res'.$thisfn;
11488: }
11489: if ($thisfn !~m|^/adm|) {
11490: if ($thisfn =~ m|^/ext/|) {
11491: $thisfn='/adm/wrapper'.$thisfn;
11492: } else {
11493: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11494: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11495: if ($embstyle eq 'ssi'
11496: || ($embstyle eq 'hdn')
11497: || ($embstyle eq 'rat')
11498: || ($embstyle eq 'prv')
11499: || ($embstyle eq 'ign')) {
11500: #do nothing with these
11501: } elsif (($embstyle eq 'img')
11502: || ($embstyle eq 'emb')
11503: || ($embstyle eq 'wrp')) {
11504: $thisfn='/adm/wrapper'.$thisfn;
11505: } elsif ($embstyle eq 'unk'
11506: && $thisfn!~/\.(sequence|page)$/) {
11507: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11508: } else {
11509: # &logthis("Got a blank emb style");
11510: }
11511: }
11512: }
11513: return $thisfn;
11514: }
11515:
11516: sub clutter_with_no_wrapper {
11517: my $uri = &clutter(shift);
11518: if ($uri =~ m-^/adm/-) {
11519: $uri =~ s-^/adm/wrapper/-/-;
11520: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11521: }
11522: return $uri;
11523: }
11524:
11525: sub freeze_escape {
11526: my ($value)=@_;
11527: if (ref($value)) {
11528: $value=&nfreeze($value);
11529: return '__FROZEN__'.&escape($value);
11530: }
11531: return &escape($value);
11532: }
11533:
11534:
11535: sub thaw_unescape {
11536: my ($value)=@_;
11537: if ($value =~ /^__FROZEN__/) {
11538: substr($value,0,10,undef);
11539: $value=&unescape($value);
11540: return &thaw($value);
11541: }
11542: return &unescape($value);
11543: }
11544:
11545: sub correct_line_ends {
11546: my ($result)=@_;
11547: $$result =~s/\r\n/\n/mg;
11548: $$result =~s/\r/\n/mg;
11549: }
11550: # ================================================================ Main Program
11551:
11552: sub goodbye {
11553: &logthis("Starting Shut down");
11554: #not converted to using infrastruture and probably shouldn't be
11555: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11556: #converted
11557: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11558: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11559: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11560: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11561: #1.1 only
11562: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11563: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11564: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11565: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11566: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11567: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11568: &logthis(sprintf("%-20s is %s",'hits',$hits));
11569: &flushcourselogs();
11570: &logthis("Shutting down");
11571: }
11572:
11573: sub get_dns {
11574: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
11575: if (!$ignore_cache) {
11576: my ($content,$cached)=
11577: &Apache::lonnet::is_cached_new('dns',$url);
11578: if ($cached) {
11579: &$func($content,$hashref);
11580: return;
11581: }
11582: }
11583:
11584: my %alldns;
11585: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11586: foreach my $dns (<$config>) {
11587: next if ($dns !~ /^\^(\S*)/x);
11588: my $line = $1;
11589: my ($host,$protocol) = split(/:/,$line);
11590: if ($protocol ne 'https') {
11591: $protocol = 'http';
11592: }
11593: $alldns{$host} = $protocol;
11594: }
11595: while (%alldns) {
11596: my ($dns) = keys(%alldns);
11597: my $ua=new LWP::UserAgent;
11598: $ua->timeout(30);
11599: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11600: my $response=$ua->request($request);
11601: delete($alldns{$dns});
11602: next if ($response->is_error());
11603: my @content = split("\n",$response->content);
11604: unless ($nocache) {
11605: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
11606: }
11607: &$func(\@content,$hashref);
11608: return;
11609: }
11610: close($config);
11611: my $which = (split('/',$url))[3];
11612: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11613: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11614: my @content = <$config>;
11615: &$func(\@content,$hashref);
11616: return;
11617: }
11618:
11619: # ------------------------------------------------------Get DNS checksums file
11620: sub parse_dns_checksums_tab {
11621: my ($lines,$hashref) = @_;
11622: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
11623: my $loncaparev = &get_server_loncaparev($machine_dom);
11624: my ($release,$timestamp) = split(/\-/,$loncaparev);
11625: my (%chksum,%revnum);
11626: if (ref($lines) eq 'ARRAY') {
11627: chomp(@{$lines});
11628: my $versions = shift(@{$lines});
11629: my %supported;
11630: if ($versions =~ /^VERSIONS\:([\w\.\,]+)$/) {
11631: my $releaseslist = $1;
11632: if ($releaseslist =~ /,/) {
11633: map { $supported{$_} = 1; } split(/,/,$releaseslist);
11634: } elsif ($releaseslist) {
11635: $supported{$releaseslist} = 1;
11636: }
11637: }
11638: if ($supported{$release}) {
11639: my $matchthis = 0;
11640: foreach my $line (@{$lines}) {
11641: if ($line =~ /^(\d[\w\.]+)$/) {
11642: if ($matchthis) {
11643: last;
11644: } elsif ($1 eq $release) {
11645: $matchthis = 1;
11646: }
11647: } elsif ($matchthis) {
11648: my ($file,$version,$shasum) = split(/,/,$line);
11649: $chksum{$file} = $shasum;
11650: $revnum{$file} = $version;
11651: }
11652: }
11653: if (ref($hashref) eq 'HASH') {
11654: %{$hashref} = (
11655: sums => \%chksum,
11656: versions => \%revnum,
11657: );
11658: }
11659: }
11660: }
11661: return;
11662: }
11663:
11664: sub fetch_dns_checksums {
11665: my %checksums;
11666: &get_dns('/adm/dns/checksums',\&parse_dns_checksums_tab,1,1,
11667: \%checksums);
11668: return \%checksums;
11669: }
11670:
11671: # ------------------------------------------------------------ Read domain file
11672: {
11673: my $loaded;
11674: my %domain;
11675:
11676: sub parse_domain_tab {
11677: my ($lines) = @_;
11678: foreach my $line (@$lines) {
11679: next if ($line =~ /^(\#|\s*$ )/x);
11680:
11681: chomp($line);
11682: my ($name,@elements) = split(/:/,$line,9);
11683: my %this_domain;
11684: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11685: 'lang_def', 'city', 'longi', 'lati',
11686: 'primary') {
11687: $this_domain{$field} = shift(@elements);
11688: }
11689: $domain{$name} = \%this_domain;
11690: }
11691: }
11692:
11693: sub reset_domain_info {
11694: undef($loaded);
11695: undef(%domain);
11696: }
11697:
11698: sub load_domain_tab {
11699: my ($ignore_cache) = @_;
11700: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11701: my $fh;
11702: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11703: my @lines = <$fh>;
11704: &parse_domain_tab(\@lines);
11705: }
11706: close($fh);
11707: $loaded = 1;
11708: }
11709:
11710: sub domain {
11711: &load_domain_tab() if (!$loaded);
11712:
11713: my ($name,$what) = @_;
11714: return if ( !exists($domain{$name}) );
11715:
11716: if (!$what) {
11717: return $domain{$name}{'description'};
11718: }
11719: return $domain{$name}{$what};
11720: }
11721:
11722: sub domain_info {
11723: &load_domain_tab() if (!$loaded);
11724: return %domain;
11725: }
11726:
11727: }
11728:
11729:
11730: # ------------------------------------------------------------- Read hosts file
11731: {
11732: my %hostname;
11733: my %hostdom;
11734: my %libserv;
11735: my $loaded;
11736: my %name_to_host;
11737: my %internetdom;
11738: my %LC_dns_serv;
11739:
11740: sub parse_hosts_tab {
11741: my ($file) = @_;
11742: foreach my $configline (@$file) {
11743: next if ($configline =~ /^(\#|\s*$ )/x);
11744: chomp($configline);
11745: if ($configline =~ /^\^/) {
11746: if ($configline =~ /^\^([\w.\-]+)/) {
11747: $LC_dns_serv{$1} = 1;
11748: }
11749: next;
11750: }
11751: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11752: $name=~s/\s//g;
11753: if ($id && $domain && $role && $name) {
11754: $hostname{$id}=$name;
11755: push(@{$name_to_host{$name}}, $id);
11756: $hostdom{$id}=$domain;
11757: if ($role eq 'library') { $libserv{$id}=$name; }
11758: if (defined($protocol)) {
11759: if ($protocol eq 'https') {
11760: $protocol{$id} = $protocol;
11761: } else {
11762: $protocol{$id} = 'http';
11763: }
11764: } else {
11765: $protocol{$id} = 'http';
11766: }
11767: if (defined($intdom)) {
11768: $internetdom{$id} = $intdom;
11769: }
11770: }
11771: }
11772: }
11773:
11774: sub reset_hosts_info {
11775: &purge_remembered();
11776: &reset_domain_info();
11777: &reset_hosts_ip_info();
11778: undef(%name_to_host);
11779: undef(%hostname);
11780: undef(%hostdom);
11781: undef(%libserv);
11782: undef($loaded);
11783: }
11784:
11785: sub load_hosts_tab {
11786: my ($ignore_cache) = @_;
11787: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11788: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11789: my @config = <$config>;
11790: &parse_hosts_tab(\@config);
11791: close($config);
11792: $loaded=1;
11793: }
11794:
11795: sub hostname {
11796: &load_hosts_tab() if (!$loaded);
11797:
11798: my ($lonid) = @_;
11799: return $hostname{$lonid};
11800: }
11801:
11802: sub all_hostnames {
11803: &load_hosts_tab() if (!$loaded);
11804:
11805: return %hostname;
11806: }
11807:
11808: sub all_names {
11809: &load_hosts_tab() if (!$loaded);
11810:
11811: return %name_to_host;
11812: }
11813:
11814: sub all_host_domain {
11815: &load_hosts_tab() if (!$loaded);
11816: return %hostdom;
11817: }
11818:
11819: sub is_library {
11820: &load_hosts_tab() if (!$loaded);
11821:
11822: return exists($libserv{$_[0]});
11823: }
11824:
11825: sub all_library {
11826: &load_hosts_tab() if (!$loaded);
11827:
11828: return %libserv;
11829: }
11830:
11831: sub unique_library {
11832: #2x reverse removes all hostnames that appear more than once
11833: my %unique = reverse &all_library();
11834: return reverse %unique;
11835: }
11836:
11837: sub get_servers {
11838: &load_hosts_tab() if (!$loaded);
11839:
11840: my ($domain,$type) = @_;
11841: my %possible_hosts = ($type eq 'library') ? %libserv
11842: : %hostname;
11843: my %result;
11844: if (ref($domain) eq 'ARRAY') {
11845: while ( my ($host,$hostname) = each(%possible_hosts)) {
11846: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11847: $result{$host} = $hostname;
11848: }
11849: }
11850: } else {
11851: while ( my ($host,$hostname) = each(%possible_hosts)) {
11852: if ($hostdom{$host} eq $domain) {
11853: $result{$host} = $hostname;
11854: }
11855: }
11856: }
11857: return %result;
11858: }
11859:
11860: sub get_unique_servers {
11861: my %unique = reverse &get_servers(@_);
11862: return reverse %unique;
11863: }
11864:
11865: sub host_domain {
11866: &load_hosts_tab() if (!$loaded);
11867:
11868: my ($lonid) = @_;
11869: return $hostdom{$lonid};
11870: }
11871:
11872: sub all_domains {
11873: &load_hosts_tab() if (!$loaded);
11874:
11875: my %seen;
11876: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11877: return @uniq;
11878: }
11879:
11880: sub internet_dom {
11881: &load_hosts_tab() if (!$loaded);
11882:
11883: my ($lonid) = @_;
11884: return $internetdom{$lonid};
11885: }
11886:
11887: sub is_LC_dns {
11888: &load_hosts_tab() if (!$loaded);
11889:
11890: my ($hostname) = @_;
11891: return exists($LC_dns_serv{$hostname});
11892: }
11893:
11894: }
11895:
11896: {
11897: my %iphost;
11898: my %name_to_ip;
11899: my %lonid_to_ip;
11900:
11901: sub get_hosts_from_ip {
11902: my ($ip) = @_;
11903: my %iphosts = &get_iphost();
11904: if (ref($iphosts{$ip})) {
11905: return @{$iphosts{$ip}};
11906: }
11907: return;
11908: }
11909:
11910: sub reset_hosts_ip_info {
11911: undef(%iphost);
11912: undef(%name_to_ip);
11913: undef(%lonid_to_ip);
11914: }
11915:
11916: sub get_host_ip {
11917: my ($lonid) = @_;
11918: if (exists($lonid_to_ip{$lonid})) {
11919: return $lonid_to_ip{$lonid};
11920: }
11921: my $name=&hostname($lonid);
11922: my $ip = gethostbyname($name);
11923: return if (!$ip || length($ip) ne 4);
11924: $ip=inet_ntoa($ip);
11925: $name_to_ip{$name} = $ip;
11926: $lonid_to_ip{$lonid} = $ip;
11927: return $ip;
11928: }
11929:
11930: sub get_iphost {
11931: my ($ignore_cache) = @_;
11932:
11933: if (!$ignore_cache) {
11934: if (%iphost) {
11935: return %iphost;
11936: }
11937: my ($ip_info,$cached)=
11938: &Apache::lonnet::is_cached_new('iphost','iphost');
11939: if ($cached) {
11940: %iphost = %{$ip_info->[0]};
11941: %name_to_ip = %{$ip_info->[1]};
11942: %lonid_to_ip = %{$ip_info->[2]};
11943: return %iphost;
11944: }
11945: }
11946:
11947: # get yesterday's info for fallback
11948: my %old_name_to_ip;
11949: my ($ip_info,$cached)=
11950: &Apache::lonnet::is_cached_new('iphost','iphost');
11951: if ($cached) {
11952: %old_name_to_ip = %{$ip_info->[1]};
11953: }
11954:
11955: my %name_to_host = &all_names();
11956: foreach my $name (keys(%name_to_host)) {
11957: my $ip;
11958: if (!exists($name_to_ip{$name})) {
11959: $ip = gethostbyname($name);
11960: if (!$ip || length($ip) ne 4) {
11961: if (defined($old_name_to_ip{$name})) {
11962: $ip = $old_name_to_ip{$name};
11963: &logthis("Can't find $name defaulting to old $ip");
11964: } else {
11965: &logthis("Name $name no IP found");
11966: next;
11967: }
11968: } else {
11969: $ip=inet_ntoa($ip);
11970: }
11971: $name_to_ip{$name} = $ip;
11972: } else {
11973: $ip = $name_to_ip{$name};
11974: }
11975: foreach my $id (@{ $name_to_host{$name} }) {
11976: $lonid_to_ip{$id} = $ip;
11977: }
11978: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11979: }
11980: &Apache::lonnet::do_cache_new('iphost','iphost',
11981: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11982: 48*60*60);
11983:
11984: return %iphost;
11985: }
11986:
11987: #
11988: # Given a DNS returns the loncapa host name for that DNS
11989: #
11990: sub host_from_dns {
11991: my ($dns) = @_;
11992: my @hosts;
11993: my $ip;
11994:
11995: if (exists($name_to_ip{$dns})) {
11996: $ip = $name_to_ip{$dns};
11997: }
11998: if (!$ip) {
11999: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12000: if (length($ip) == 4) {
12001: $ip = &IO::Socket::inet_ntoa($ip);
12002: }
12003: }
12004: if ($ip) {
12005: @hosts = get_hosts_from_ip($ip);
12006: return $hosts[0];
12007: }
12008: return undef;
12009: }
12010:
12011: sub get_internet_names {
12012: my ($lonid) = @_;
12013: return if ($lonid eq '');
12014: my ($idnref,$cached)=
12015: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12016: if ($cached) {
12017: return $idnref;
12018: }
12019: my $ip = &get_host_ip($lonid);
12020: my @hosts = &get_hosts_from_ip($ip);
12021: my %iphost = &get_iphost();
12022: my (@idns,%seen);
12023: foreach my $id (@hosts) {
12024: my $dom = &host_domain($id);
12025: my $prim_id = &domain($dom,'primary');
12026: my $prim_ip = &get_host_ip($prim_id);
12027: next if ($seen{$prim_ip});
12028: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12029: foreach my $id (@{$iphost{$prim_ip}}) {
12030: my $intdom = &internet_dom($id);
12031: unless (grep(/^\Q$intdom\E$/,@idns)) {
12032: push(@idns,$intdom);
12033: }
12034: }
12035: }
12036: $seen{$prim_ip} = 1;
12037: }
12038: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12039: }
12040:
12041: }
12042:
12043: sub all_loncaparevs {
12044: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
12045: }
12046:
12047: BEGIN {
12048:
12049: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12050: unless ($readit) {
12051: {
12052: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12053: %perlvar = (%perlvar,%{$configvars});
12054: }
12055:
12056:
12057: # ------------------------------------------------------ Read spare server file
12058: {
12059: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12060:
12061: while (my $configline=<$config>) {
12062: chomp($configline);
12063: if ($configline) {
12064: my ($host,$type) = split(':',$configline,2);
12065: if (!defined($type) || $type eq '') { $type = 'default' };
12066: push(@{ $spareid{$type} }, $host);
12067: }
12068: }
12069: close($config);
12070: }
12071: # ------------------------------------------------------------ Read permissions
12072: {
12073: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12074:
12075: while (my $configline=<$config>) {
12076: chomp($configline);
12077: if ($configline) {
12078: my ($role,$perm)=split(/ /,$configline);
12079: if ($perm ne '') { $pr{$role}=$perm; }
12080: }
12081: }
12082: close($config);
12083: }
12084:
12085: # -------------------------------------------- Read plain texts for permissions
12086: {
12087: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12088:
12089: while (my $configline=<$config>) {
12090: chomp($configline);
12091: if ($configline) {
12092: my ($short,@plain)=split(/:/,$configline);
12093: %{$prp{$short}} = ();
12094: if (@plain > 0) {
12095: $prp{$short}{'std'} = $plain[0];
12096: for (my $i=1; $i<@plain; $i++) {
12097: $prp{$short}{'alt'.$i} = $plain[$i];
12098: }
12099: }
12100: }
12101: }
12102: close($config);
12103: }
12104:
12105: # ---------------------------------------------------------- Read package table
12106: {
12107: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12108:
12109: while (my $configline=<$config>) {
12110: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12111: chomp($configline);
12112: my ($short,$plain)=split(/:/,$configline);
12113: my ($pack,$name)=split(/\&/,$short);
12114: if ($plain ne '') {
12115: $packagetab{$pack.'&'.$name.'&name'}=$name;
12116: $packagetab{$short}=$plain;
12117: }
12118: }
12119: close($config);
12120: }
12121:
12122: # ---------------------------------------------------------- Read loncaparev table
12123: {
12124: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12125: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12126: while (my $configline=<$config>) {
12127: chomp($configline);
12128: my ($hostid,$loncaparev)=split(/:/,$configline);
12129: $loncaparevs{$hostid}=$loncaparev;
12130: }
12131: close($config);
12132: }
12133: }
12134: }
12135:
12136: # ---------------------------------------------------------- Read serverhostID table
12137: {
12138: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12139: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12140: while (my $configline=<$config>) {
12141: chomp($configline);
12142: my ($name,$id)=split(/:/,$configline);
12143: $serverhomeIDs{$name}=$id;
12144: }
12145: close($config);
12146: }
12147: }
12148: }
12149:
12150: {
12151: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12152: if (-e $file) {
12153: my $parser = HTML::LCParser->new($file);
12154: while (my $token = $parser->get_token()) {
12155: if ($token->[0] eq 'S') {
12156: my $item = $token->[1];
12157: my $name = $token->[2]{'name'};
12158: my $value = $token->[2]{'value'};
12159: if ($item ne '' && $name ne '' && $value ne '') {
12160: my $release = $parser->get_text();
12161: $release =~ s/(^\s*|\s*$ )//gx;
12162: $needsrelease{$item.':'.$name.':'.$value} = $release;
12163: }
12164: }
12165: }
12166: }
12167: }
12168:
12169: # ---------------------------------------------------------- Read managers table
12170: {
12171: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12172: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12173: while (my $configline=<$config>) {
12174: chomp($configline);
12175: next if ($configline =~ /^\#/);
12176: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12177: $managerstab{$configline} = 1;
12178: }
12179: }
12180: close($config);
12181: }
12182: }
12183: }
12184:
12185: # ------------- set up temporary directory
12186: {
12187: $tmpdir = LONCAPA::tempdir();
12188:
12189: }
12190:
12191: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12192: 'compress_threshold'=> 20_000,
12193: });
12194:
12195: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12196: $dumpcount=0;
12197: $locknum=0;
12198:
12199: &logtouch();
12200: &logthis('<font color="yellow">INFO: Read configuration</font>');
12201: $readit=1;
12202: {
12203: use integer;
12204: my $test=(2**32)+1;
12205: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12206: &logthis(" Detected 64bit platform ($_64bit)");
12207: }
12208:
12209: {
12210: eval {
12211: ($apache) =
12212: (Apache2::ServerUtil::get_server_version() =~ m{Apache/(\d+\.\d+)});
12213: };
12214: if ($@) {
12215: $apache = 1.3;
12216: }
12217: }
12218:
12219: }
12220: }
12221:
12222: 1;
12223: __END__
12224:
12225: =pod
12226:
12227: =head1 NAME
12228:
12229: Apache::lonnet - Subroutines to ask questions about things in the network.
12230:
12231: =head1 SYNOPSIS
12232:
12233: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12234:
12235: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12236:
12237: Common parameters:
12238:
12239: =over 4
12240:
12241: =item *
12242:
12243: $uname : an internal username (if $cname expecting a course Id specifically)
12244:
12245: =item *
12246:
12247: $udom : a domain (if $cdom expecting a course's domain specifically)
12248:
12249: =item *
12250:
12251: $symb : a resource instance identifier
12252:
12253: =item *
12254:
12255: $namespace : the name of a .db file that contains the data needed or
12256: being set.
12257:
12258: =back
12259:
12260: =head1 OVERVIEW
12261:
12262: lonnet provides subroutines which interact with the
12263: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12264: about classes, users, and resources.
12265:
12266: For many of these objects you can also use this to store data about
12267: them or modify them in various ways.
12268:
12269: =head2 Symbs
12270:
12271: To identify a specific instance of a resource, LON-CAPA uses symbols
12272: or "symbs"X<symb>. These identifiers are built from the URL of the
12273: map, the resource number of the resource in the map, and the URL of
12274: the resource itself. The latter is somewhat redundant, but might help
12275: if maps change.
12276:
12277: An example is
12278:
12279: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12280:
12281: The respective map entry is
12282:
12283: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12284: title="Problem 2">
12285: </resource>
12286:
12287: Symbs are used by the random number generator, as well as to store and
12288: restore data specific to a certain instance of for example a problem.
12289:
12290: =head2 Storing And Retrieving Data
12291:
12292: X<store()>X<cstore()>X<restore()>Three of the most important functions
12293: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12294: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12295: is is the non-critical message twin of cstore. These functions are for
12296: handlers to store a perl hash to a user's permanent data space in an
12297: easy manner, and to retrieve it again on another call. It is expected
12298: that a handler would use this once at the beginning to retrieve data,
12299: and then again once at the end to send only the new data back.
12300:
12301: The data is stored in the user's data directory on the user's
12302: homeserver under the ID of the course.
12303:
12304: The hash that is returned by restore will have all of the previous
12305: value for all of the elements of the hash.
12306:
12307: Example:
12308:
12309: #creating a hash
12310: my %hash;
12311: $hash{'foo'}='bar';
12312:
12313: #storing it
12314: &Apache::lonnet::cstore(\%hash);
12315:
12316: #changing a value
12317: $hash{'foo'}='notbar';
12318:
12319: #adding a new value
12320: $hash{'bar'}='foo';
12321: &Apache::lonnet::cstore(\%hash);
12322:
12323: #retrieving the hash
12324: my %history=&Apache::lonnet::restore();
12325:
12326: #print the hash
12327: foreach my $key (sort(keys(%history))) {
12328: print("\%history{$key} = $history{$key}");
12329: }
12330:
12331: Will print out:
12332:
12333: %history{1:foo} = bar
12334: %history{1:keys} = foo:timestamp
12335: %history{1:timestamp} = 990455579
12336: %history{2:bar} = foo
12337: %history{2:foo} = notbar
12338: %history{2:keys} = foo:bar:timestamp
12339: %history{2:timestamp} = 990455580
12340: %history{bar} = foo
12341: %history{foo} = notbar
12342: %history{timestamp} = 990455580
12343: %history{version} = 2
12344:
12345: Note that the special hash entries C<keys>, C<version> and
12346: C<timestamp> were added to the hash. C<version> will be equal to the
12347: total number of versions of the data that have been stored. The
12348: C<timestamp> attribute will be the UNIX time the hash was
12349: stored. C<keys> is available in every historical section to list which
12350: keys were added or changed at a specific historical revision of a
12351: hash.
12352:
12353: B<Warning>: do not store the hash that restore returns directly. This
12354: will cause a mess since it will restore the historical keys as if the
12355: were new keys. I.E. 1:foo will become 1:1:foo etc.
12356:
12357: Calling convention:
12358:
12359: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
12360: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
12361:
12362: For more detailed information, see lonnet specific documentation.
12363:
12364: =head1 RETURN MESSAGES
12365:
12366: =over 4
12367:
12368: =item * B<con_lost>: unable to contact remote host
12369:
12370: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12371: when the connection is brought back up
12372:
12373: =item * B<con_failed>: unable to contact remote host and unable to save message
12374: for later delivery
12375:
12376: =item * B<error:>: an error a occurred, a description of the error follows the :
12377:
12378: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12379: that was requested
12380:
12381: =back
12382:
12383: =head1 PUBLIC SUBROUTINES
12384:
12385: =head2 Session Environment Functions
12386:
12387: =over 4
12388:
12389: =item *
12390: X<appenv()>
12391: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12392: the user envirnoment file, and will be restored for each access this
12393: user makes during this session, also modifies the %env for the current
12394: process. Optional rolesarrayref - if defined contains a reference to an array
12395: of roles which are exempt from the restriction on modifying user.role entries
12396: in the user's environment.db and in %env.
12397:
12398: =item *
12399: X<delenv()>
12400: B<delenv($delthis,$regexp)>: removes all items from the session
12401: environment file that begin with $delthis. If the
12402: optional second arg - $regexp - is true, $delthis is treated as a
12403: regular expression, otherwise \Q$delthis\E is used.
12404: The values are also deleted from the current processes %env.
12405:
12406: =item * get_env_multiple($name)
12407:
12408: gets $name from the %env hash, it seemlessly handles the cases where multiple
12409: values may be defined and end up as an array ref.
12410:
12411: returns an array of values
12412:
12413: =back
12414:
12415: =head2 User Information
12416:
12417: =over 4
12418:
12419: =item *
12420: X<queryauthenticate()>
12421: B<queryauthenticate($uname,$udom)>: try to determine user's current
12422: authentication scheme
12423:
12424: =item *
12425: X<authenticate()>
12426: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12427: authenticate user from domain's lib servers (first use the current
12428: one). C<$upass> should be the users password.
12429: $checkdefauth is optional (value is 1 if a check should be made to
12430: authenticate user using default authentication method, and allow
12431: account creation if username does not have account in the domain).
12432: $clientcancheckhost is optional (value is 1 if checking whether the
12433: server can host will occur on the client side in lonauth.pm).
12434:
12435: =item *
12436: X<homeserver()>
12437: B<homeserver($uname,$udom)>: find the server which has
12438: the user's directory and files (there must be only one), this caches
12439: the answer, and also caches if there is a borken connection.
12440:
12441: =item *
12442: X<idget()>
12443: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12444: (IDs are a unique resource in a domain, there must be only 1 ID per
12445: username, and only 1 username per ID in a specific domain) (returns
12446: hash: id=>name,id=>name)
12447:
12448: =item *
12449: X<idrget()>
12450: B<idrget($udom,@unames)>: find the IDs behind a list of
12451: usernames (returns hash: name=>id,name=>id)
12452:
12453: =item *
12454: X<idput()>
12455: B<idput($udom,%ids)>: store away a list of names and associated IDs
12456:
12457: =item *
12458: X<rolesinit()>
12459: B<rolesinit($udom,$username)>: get user privileges.
12460: returns user role, first access and timer interval hashes
12461:
12462: =item *
12463: X<privileged()>
12464: B<privileged($username,$domain)>: returns a true if user has a
12465: privileged and active role (i.e. su or dc), false otherwise.
12466:
12467: =item *
12468: X<getsection()>
12469: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12470: course $cname, return section name/number or '' for "not in course"
12471: and '-1' for "no section"
12472:
12473: =item *
12474: X<userenvironment()>
12475: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12476: passed in @what from the requested user's environment, returns a hash
12477:
12478: =item *
12479: X<userlog_query()>
12480: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12481: activity.log file. %filters defines filters applied when parsing the
12482: log file. These can be start or end timestamps, or the type of action
12483: - log to look for Login or Logout events, check for Checkin or
12484: Checkout, role for role selection. The response is in the form
12485: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12486: escaped strings of the action recorded in the activity.log file.
12487:
12488: =back
12489:
12490: =head2 User Roles
12491:
12492: =over 4
12493:
12494: =item *
12495:
12496: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12497: F: full access
12498: U,I,K: authentication modes (cxx only)
12499: '': forbidden
12500: 1: user needs to choose course
12501: 2: browse allowed
12502: A: passphrase authentication needed
12503:
12504: =item *
12505:
12506: constructaccess($url,$setpriv) : check for access to construction space URL
12507:
12508: See if the owner domain and name in the URL match those in the
12509: expected environment. If so, return three element list
12510: ($ownername,$ownerdomain,$ownerhome).
12511:
12512: Otherwise return the null string.
12513:
12514: If second argument 'setpriv' is true, it assigns the privileges,
12515: and returns the same three element list, unless the owner has
12516: blocked "ad hoc" Domain Coordinator access to the Author Space,
12517: in which case the null string is returned.
12518:
12519: =item *
12520:
12521: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12522: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12523: and course level
12524:
12525: =item *
12526:
12527: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12528: (rolesplain.tab); plain text explanation of a user role term.
12529: $type is Course (default) or Community.
12530: If $forcedefault evaluates to true, text returned will be default
12531: text for $type. Otherwise, if this is a course, the text returned
12532: will be a custom name for the role (if defined in the course's
12533: environment). If no custom name is defined the default is returned.
12534:
12535: =item *
12536:
12537: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
12538: All arguments are optional. Returns a hash of a roles, either for
12539: co-author/assistant author roles for a user's Construction Space
12540: (default), or if $context is 'userroles', roles for the user himself,
12541: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12542: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12543: For each key, value is set to colon-separated start and end times for
12544: the role. If no username and domain are specified, will default to
12545: current user/domain. Types, roles, and roledoms are references to arrays
12546: of role statuses (active, future or previous), roles
12547: (e.g., cc,in, st etc.) and domains of the roles which can be used
12548: to restrict the list of roles reported. If no array ref is
12549: provided for types, will default to return only active roles.
12550:
12551: =item *
12552:
12553: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12554: user: $uname:$udom has a role in the course: $cdom_$cnum.
12555:
12556: Additional optional arguments are: $type (if role checking is to be restricted
12557: to certain user status types -- previous (expired roles), active (currently
12558: available roles) or future (roles available in the future), and
12559: $hideprivileged -- if true will not report course roles for users who
12560: have active Domain Coordinator or Super User roles.
12561:
12562: =back
12563:
12564: =head2 User Modification
12565:
12566: =over 4
12567:
12568: =item *
12569:
12570: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12571: user for the level given by URL. Optional start and end dates (leave empty
12572: string or zero for "no date")
12573:
12574: =item *
12575:
12576: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12577: change a users, password, possible return values are: ok,
12578: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12579: refused
12580:
12581: =item *
12582:
12583: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12584:
12585: =item *
12586:
12587: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12588: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12589:
12590: will update user information (firstname,middlename,lastname,generation,
12591: permanentemail), and if forceid is true, student/employee ID also.
12592: A user's institutional affiliation(s) can also be updated.
12593: User information fields will not be overwritten with empty entries
12594: unless the field is included in the $candelete array reference.
12595: This array is included when a single user is modified via "Manage Users",
12596: or when Autoupdate.pl is run by cron in a domain.
12597:
12598: =item *
12599:
12600: modifystudent
12601:
12602: modify a student's enrollment and identification information.
12603: The course id is resolved based on the current users environment.
12604: This means the envoking user must be a course coordinator or otherwise
12605: associated with a course.
12606:
12607: This call is essentially a wrapper for lonnet::modifyuser and
12608: lonnet::modify_student_enrollment
12609:
12610: Inputs:
12611:
12612: =over 4
12613:
12614: =item B<$udom> Student's loncapa domain
12615:
12616: =item B<$uname> Student's loncapa login name
12617:
12618: =item B<$uid> Student/Employee ID
12619:
12620: =item B<$umode> Student's authentication mode
12621:
12622: =item B<$upass> Student's password
12623:
12624: =item B<$first> Student's first name
12625:
12626: =item B<$middle> Student's middle name
12627:
12628: =item B<$last> Student's last name
12629:
12630: =item B<$gene> Student's generation
12631:
12632: =item B<$usec> Student's section in course
12633:
12634: =item B<$end> Unix time of the roles expiration
12635:
12636: =item B<$start> Unix time of the roles start date
12637:
12638: =item B<$forceid> If defined, allow $uid to be changed
12639:
12640: =item B<$desiredhome> server to use as home server for student
12641:
12642: =item B<$email> Student's permanent e-mail address
12643:
12644: =item B<$type> Type of enrollment (auto or manual)
12645:
12646: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12647:
12648: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12649:
12650: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12651:
12652: =item B<$context> role change context (shown in User Management Logs display in a course)
12653:
12654: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12655:
12656: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
12657:
12658: =back
12659:
12660: =item *
12661:
12662: modify_student_enrollment
12663:
12664: Change a students enrollment status in a class. The environment variable
12665: 'role.request.course' must be defined for this function to proceed.
12666:
12667: Inputs:
12668:
12669: =over 4
12670:
12671: =item $udom, students domain
12672:
12673: =item $uname, students name
12674:
12675: =item $uid, students user id
12676:
12677: =item $first, students first name
12678:
12679: =item $middle
12680:
12681: =item $last
12682:
12683: =item $gene
12684:
12685: =item $usec
12686:
12687: =item $end
12688:
12689: =item $start
12690:
12691: =item $type
12692:
12693: =item $locktype
12694:
12695: =item $cid
12696:
12697: =item $selfenroll
12698:
12699: =item $context
12700:
12701: =item $credits, number of credits student will earn from this class
12702:
12703: =back
12704:
12705:
12706: =item *
12707:
12708: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12709: custom role; give a custom role to a user for the level given by URL. Specify
12710: name and domain of role author, and role name
12711:
12712: =item *
12713:
12714: revokerole($udom,$uname,$url,$role) : revoke a role for url
12715:
12716: =item *
12717:
12718: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12719:
12720: =back
12721:
12722: =head2 Course Infomation
12723:
12724: =over 4
12725:
12726: =item *
12727:
12728: coursedescription($courseid,$options) : returns a hash of information about the
12729: specified course id, including all environment settings for the
12730: course, the description of the course will be in the hash under the
12731: key 'description'
12732:
12733: $options is an optional parameter that if supplied is a hash reference that controls
12734: what how this function works. It has the following key/values:
12735:
12736: =over 4
12737:
12738: =item freshen_cache
12739:
12740: If defined, and the environment cache for the course is valid, it is
12741: returned in the returned hash.
12742:
12743: =item one_time
12744:
12745: If defined, the last cache time is set to _now_
12746:
12747: =item user
12748:
12749: If defined, the supplied username is used instead of the current user.
12750:
12751:
12752: =back
12753:
12754: =item *
12755:
12756: resdata($name,$domain,$type,@which) : request for current parameter
12757: setting for a specific $type, where $type is either 'course' or 'user',
12758: @what should be a list of parameters to ask about. This routine caches
12759: answers for 5 minutes.
12760:
12761: =item *
12762:
12763: get_courseresdata($courseid, $domain) : dump the entire course resource
12764: data base, returning a hash that is keyed by the resource name and has
12765: values that are the resource value. I believe that the timestamps and
12766: versions are also returned.
12767:
12768: =back
12769:
12770: =head2 Course Modification
12771:
12772: =over 4
12773:
12774: =item *
12775:
12776: writecoursepref($courseid,%prefs) : write preferences (environment
12777: database) for a course
12778:
12779: =item *
12780:
12781: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12782:
12783: =item *
12784:
12785: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12786:
12787: =item *
12788:
12789: is_course($courseid), is_course($cdom, $cnum)
12790:
12791: Accepts either a combined $courseid (in the form of domain_courseid) or the
12792: two component version $cdom, $cnum. It checks if the specified course exists.
12793:
12794: Returns:
12795: undef if the course doesn't exist, otherwise
12796: in scalar context the combined courseid.
12797: in list context the two components of the course identifier, domain and
12798: courseid.
12799:
12800: =back
12801:
12802: =head2 Resource Subroutines
12803:
12804: =over 4
12805:
12806: =item *
12807:
12808: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12809:
12810: =item *
12811:
12812: repcopy($filename) : subscribes to the requested file, and attempts to
12813: replicate from the owning library server, Might return
12814: 'unavailable', 'not_found', 'forbidden', 'ok', or
12815: 'bad_request', also attempts to grab the metadata for the
12816: resource. Expects the local filesystem pathname
12817: (/home/httpd/html/res/....)
12818:
12819: =back
12820:
12821: =head2 Resource Information
12822:
12823: =over 4
12824:
12825: =item *
12826:
12827: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12828: a vairety of different possible values, $varname should be a request
12829: string, and the other parameters can be used to specify who and what
12830: one is asking about.
12831:
12832: Possible values for $varname are environment.lastname (or other item
12833: from the envirnment hash), user.name (or someother aspect about the
12834: user), resource.0.maxtries (or some other part and parameter of a
12835: resource)
12836:
12837: =item *
12838:
12839: directcondval($number) : get current value of a condition; reads from a state
12840: string
12841:
12842: =item *
12843:
12844: condval($condidx) : value of condition index based on state
12845:
12846: =item *
12847:
12848: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12849: resource's metadata, $what should be either a specific key, or either
12850: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12851: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12852:
12853: this function automatically caches all requests
12854:
12855: =item *
12856:
12857: metadata_query($query,$custom,$customshow) : make a metadata query against the
12858: network of library servers; returns file handle of where SQL and regex results
12859: will be stored for query
12860:
12861: =item *
12862:
12863: symbread($filename) : return symbolic list entry (filename argument optional);
12864: returns the data handle
12865:
12866: =item *
12867:
12868: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12869: and is a possible symb for the URL in $thisfn, and if is an encrypted
12870: resource that the user accessed using /enc/ returns a 1 on success, 0
12871: on failure, user must be in a course, as it assumes the existence of
12872: the course initial hash, and uses $env('request.course.id'}. The third
12873: arg is an optional reference to a scalar. If this arg is passed in the
12874: call to symbverify, it will be set to 1 if the symb has been set to be
12875: encrypted; otherwise it will be null.
12876:
12877: =item *
12878:
12879: symbclean($symb) : removes versions numbers from a symb, returns the
12880: cleaned symb
12881:
12882: =item *
12883:
12884: is_on_map($uri) : checks if the $uri is somewhere on the current
12885: course map, user must be in a course for it to work.
12886:
12887: =item *
12888:
12889: numval($salt) : return random seed value (addend for rndseed)
12890:
12891: =item *
12892:
12893: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12894: a random seed, all arguments are optional, if they aren't sent it uses the
12895: environment to derive them. Note: if symb isn't sent and it can't get one
12896: from &symbread it will use the current time as its return value
12897:
12898: =item *
12899:
12900: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12901: unfakeable, receipt
12902:
12903: =item *
12904:
12905: receipt() : API to ireceipt working off of env values; given out to users
12906:
12907: =item *
12908:
12909: countacc($url) : count the number of accesses to a given URL
12910:
12911: =item *
12912:
12913: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12914:
12915: =item *
12916:
12917: checkin($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 $tcrsid)
12918:
12919: =item *
12920:
12921: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12922:
12923: =item *
12924:
12925: devalidate($symb) : devalidate temporary spreadsheet calculations,
12926: forcing spreadsheet to reevaluate the resource scores next time.
12927:
12928: =item *
12929:
12930: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
12931: when viewing in course context.
12932:
12933: input: six args -- filename (decluttered), course number, course domain,
12934: url, symb (if registered) and group (if this is a
12935: group item -- e.g., bulletin board, group page etc.).
12936:
12937: output: array of five scalars --
12938: $cfile -- url for file editing if editable on current server
12939: $home -- homeserver of resource (i.e., for author if published,
12940: or course if uploaded.).
12941: $switchserver -- 1 if server switch will be needed.
12942: $forceedit -- 1 if icon/link should be to go to edit mode
12943: $forceview -- 1 if icon/link should be to go to view mode
12944:
12945: =item *
12946:
12947: is_course_upload($file,$cnum,$cdom)
12948:
12949: Used in course context to determine if current file was uploaded to
12950: the course (i.e., would be found in /userfiles/docs on the course's
12951: homeserver.
12952:
12953: input: 3 args -- filename (decluttered), course number and course domain.
12954: output: boolean -- 1 if file was uploaded.
12955:
12956: =back
12957:
12958: =head2 Storing/Retreiving Data
12959:
12960: =over 4
12961:
12962: =item *
12963:
12964: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12965: for this url; hashref needs to be given and should be a \%hashname; the
12966: remaining args aren't required and if they aren't passed or are '' they will
12967: be derived from the env
12968:
12969: =item *
12970:
12971: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12972: uses critical subroutine
12973:
12974: =item *
12975:
12976: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12977: all args are optional
12978:
12979: =item *
12980:
12981: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12982: dumps the complete (or key matching regexp) namespace into a hash
12983: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12984: normally &store()ed into
12985:
12986: $range should be either an integer '100' (give me the first 100
12987: matching records)
12988: or be two integers sperated by a - with no spaces
12989: '30-50' (give me the 30th through the 50th matching
12990: records)
12991:
12992:
12993: =item *
12994:
12995: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12996: replaces a &store() version of data with a replacement set of data
12997: for a particular resource in a namespace passed in the $storehash hash
12998: reference
12999:
13000: =item *
13001:
13002: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13003: works very similar to store/cstore, but all data is stored in a
13004: temporary location and can be reset using tmpreset, $storehash should
13005: be a hash reference, returns nothing on success
13006:
13007: =item *
13008:
13009: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13010: similar to restore, but all data is stored in a temporary location and
13011: can be reset using tmpreset. Returns a hash of values on success,
13012: error string otherwise.
13013:
13014: =item *
13015:
13016: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13017: deltes all keys for $symb form the temporary storage hash.
13018:
13019: =item *
13020:
13021: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13022: reference filled in from namesp ($udom and $uname are optional)
13023:
13024: =item *
13025:
13026: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13027: namesp ($udom and $uname are optional)
13028:
13029: =item *
13030:
13031: dump($namespace,$udom,$uname,$regexp,$range) :
13032: dumps the complete (or key matching regexp) namespace into a hash
13033: ($udom, $uname, $regexp, $range are optional)
13034:
13035: $range should be either an integer '100' (give me the first 100
13036: matching records)
13037: or be two integers sperated by a - with no spaces
13038: '30-50' (give me the 30th through the 50th matching
13039: records)
13040: =item *
13041:
13042: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13043: $store can be a scalar, an array reference, or if the amount to be
13044: incremented is > 1, a hash reference.
13045:
13046: ($udom and $uname are optional)
13047:
13048: =item *
13049:
13050: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13051: ($udom and $uname are optional)
13052:
13053: =item *
13054:
13055: cput($namespace,$storehash,$udom,$uname) : critical put
13056: ($udom and $uname are optional)
13057:
13058: =item *
13059:
13060: newput($namespace,$storehash,$udom,$uname) :
13061:
13062: Attempts to store the items in the $storehash, but only if they don't
13063: currently exist, if this succeeds you can be certain that you have
13064: successfully created a new key value pair in the $namespace db.
13065:
13066:
13067: Args:
13068: $namespace: name of database to store values to
13069: $storehash: hashref to store to the db
13070: $udom: (optional) domain of user containing the db
13071: $uname: (optional) name of user caontaining the db
13072:
13073: Returns:
13074: 'ok' -> succeeded in storing all keys of $storehash
13075: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13076: least <key> already existed in the db (other
13077: requested keys may also already exist)
13078: 'error: <msg>' -> unable to tie the DB or other error occurred
13079: 'con_lost' -> unable to contact request server
13080: 'refused' -> action was not allowed by remote machine
13081:
13082:
13083: =item *
13084:
13085: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13086: reference filled in from namesp (encrypts the return communication)
13087: ($udom and $uname are optional)
13088:
13089: =item *
13090:
13091: log($udom,$name,$home,$message) : write to permanent log for user; use
13092: critical subroutine
13093:
13094: =item *
13095:
13096: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13097: array reference filled in from namespace found in domain level on either
13098: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13099:
13100: =item *
13101:
13102: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13103: domain level either on specified domain server ($uhome) or primary domain
13104: server ($udom and $uhome are optional)
13105:
13106: =item *
13107:
13108: get_domain_defaults($target_domain) : returns hash with defaults for
13109: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
13110: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
13111: or localauth), initial password or a kerberos realm, language (e.g., en-us).
13112: Values are retrieved from cache (if current), or from domain's configuration.db
13113: (if available), or lastly from values in lonTabs/dns_domain,tab,
13114: or lonTabs/domain.tab.
13115:
13116: %domdefaults = &get_auth_defaults($target_domain);
13117:
13118: =back
13119:
13120: =head2 Network Status Functions
13121:
13122: =over 4
13123:
13124: =item *
13125:
13126: dirlist() : return directory list based on URI (first arg).
13127:
13128: Inputs: 1 required, 5 optional.
13129:
13130: =over
13131:
13132: =item
13133: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13134:
13135: =item
13136: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13137:
13138: =item
13139: $username - username of user/course to be listed. Extracted from $uri if absent.
13140:
13141: =item
13142: $getpropath - boolean: 1 if prepend path using &propath().
13143:
13144: =item
13145: $getuserdir - boolean: 1 if prepend path for "userfiles".
13146:
13147: =item
13148: $alternateRoot - path to prepend in place of path from $uri.
13149:
13150: =back
13151:
13152: Returns: Array of up to two items.
13153:
13154: =over
13155:
13156: a reference to an array of files/subdirectories
13157:
13158: =over
13159:
13160: Each element in the array of files/subdirectories is a & separated list of
13161: item name and the result of running stat on the item. If dirlist was requested
13162: for a file instead of a directory, the item name will be ''. For a directory
13163: listing, if the item is a metadata file, the element will end &N&M
13164: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13165: default copyright set (1).
13166:
13167: =back
13168:
13169: a scalar containing error condition (if encountered).
13170:
13171: =over
13172:
13173: =item
13174: no_host (no homeserver identified for $username:$domain).
13175:
13176: =item
13177: no_such_host (server contacted for listing not identified as valid host).
13178:
13179: =item
13180: con_lost (connection to remote server failed).
13181:
13182: =item
13183: refused (invalid $username:$domain received on lond side).
13184:
13185: =item
13186: no_such_dir (directory at specified path on lond side does not exist).
13187:
13188: =item
13189: empty (directory at specified path on lond side is empty).
13190:
13191: =over
13192:
13193: This is currently not encountered because the &ls3, &ls2,
13194: &ls (_handler) routines on the lond side do not filter out
13195: . and .. from a directory listing.
13196:
13197: =back
13198:
13199: =back
13200:
13201: =back
13202:
13203: =item *
13204:
13205: spareserver() : find server with least workload from spare.tab
13206:
13207:
13208: =item *
13209:
13210: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13211: if there is no corresponding loncapa host.
13212:
13213: =back
13214:
13215:
13216: =head2 Apache Request
13217:
13218: =over 4
13219:
13220: =item *
13221:
13222: ssi($url,%hash) : server side include, does a complete request cycle on url to
13223: localhost, posts hash
13224:
13225: =back
13226:
13227: =head2 Data to String to Data
13228:
13229: =over 4
13230:
13231: =item *
13232:
13233: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13234: and '&' separators, supports elements that are arrayrefs and hashrefs
13235:
13236: =item *
13237:
13238: hashref2str($hashref) : convert a hashref into a string complete with
13239: escaping and '=' and '&' separators, supports elements that are
13240: arrayrefs and hashrefs
13241:
13242: =item *
13243:
13244: arrayref2str($arrayref) : convert an arrayref into a string complete
13245: with escaping and '&' separators, supports elements that are arrayrefs
13246: and hashrefs
13247:
13248: =item *
13249:
13250: str2hash($string) : convert string to hash using unescaping and
13251: splitting on '=' and '&', supports elements that are arrayrefs and
13252: hashrefs
13253:
13254: =item *
13255:
13256: str2array($string) : convert string to hash using unescaping and
13257: splitting on '&', supports elements that are arrayrefs and hashrefs
13258:
13259: =back
13260:
13261: =head2 Logging Routines
13262:
13263:
13264: These routines allow one to make log messages in the lonnet.log and
13265: lonnet.perm logfiles.
13266:
13267: =over 4
13268:
13269: =item *
13270:
13271: logtouch() : make sure the logfile, lonnet.log, exists
13272:
13273: =item *
13274:
13275: logthis() : append message to the normal lonnet.log file, it gets
13276: preiodically rolled over and deleted.
13277:
13278: =item *
13279:
13280: logperm() : append a permanent message to lonnet.perm.log, this log
13281: file never gets deleted by any automated portion of the system, only
13282: messages of critical importance should go in here.
13283:
13284:
13285: =back
13286:
13287: =head2 General File Helper Routines
13288:
13289: =over 4
13290:
13291: =item *
13292:
13293: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13294: (a) files in /uploaded
13295: (i) If a local copy of the file exists -
13296: compares modification date of local copy with last-modified date for
13297: definitive version stored on home server for course. If local copy is
13298: stale, requests a new version from the home server and stores it.
13299: If the original has been removed from the home server, then local copy
13300: is unlinked.
13301: (ii) If local copy does not exist -
13302: requests the file from the home server and stores it.
13303:
13304: If $caller is 'uploadrep':
13305: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13306: for request for files originally uploaded via DOCS.
13307: - returns 'ok' if fresh local copy now available, -1 otherwise.
13308:
13309: Otherwise:
13310: This indicates a call from the content generation phase of the request.
13311: - returns the entire contents of the file or -1.
13312:
13313: (b) files in /res
13314: - returns the entire contents of a file or -1;
13315: it properly subscribes to and replicates the file if neccessary.
13316:
13317:
13318: =item *
13319:
13320: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13321: reference
13322:
13323: returns either a stat() list of data about the file or an empty list
13324: if the file doesn't exist or couldn't find out about it (connection
13325: problems or user unknown)
13326:
13327: =item *
13328:
13329: filelocation($dir,$file) : returns file system location of a file
13330: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13331: directory that relative $file lookups are to looked in ($dir of /a/dir
13332: and a file of ../bob will become /a/bob)
13333:
13334: =item *
13335:
13336: hreflocation($dir,$file) : returns file system location or a URL; same as
13337: filelocation except for hrefs
13338:
13339: =item *
13340:
13341: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
13342:
13343: =back
13344:
13345: =head2 Usererfile file routines (/uploaded*)
13346:
13347: =over 4
13348:
13349: =item *
13350:
13351: userfileupload(): main rotine for putting a file in a user or course's
13352: filespace, arguments are,
13353:
13354: formname - required - this is the name of the element in $env where the
13355: filename, and the contents of the file to create/modifed exist
13356: the filename is in $env{'form.'.$formname.'.filename'} and the
13357: contents of the file is located in $env{'form.'.$formname}
13358: context - if coursedoc, store the file in the course of the active role
13359: of the current user;
13360: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13361: if 'canceloverwrite': delete file in tmp/overwrites directory
13362: subdir - required - subdirectory to put the file in under ../userfiles/
13363: if undefined, it will be placed in "unknown"
13364:
13365: (This routine calls clean_filename() to remove any dangerous
13366: characters from the filename, and then calls finuserfileupload() to
13367: complete the transaction)
13368:
13369: returns either the url of the uploaded file (/uploaded/....) if successful
13370: and /adm/notfound.html if unsuccessful
13371:
13372: =item *
13373:
13374: clean_filename(): routine for cleaing a filename up for storage in
13375: userfile space, argument is:
13376:
13377: filename - proposed filename
13378:
13379: returns: the new clean filename
13380:
13381: =item *
13382:
13383: finishuserfileupload(): routine that creates and sends the file to
13384: userspace, probably shouldn't be called directly
13385:
13386: docuname: username or courseid of destination for the file
13387: docudom: domain of user/course of destination for the file
13388: formname: same as for userfileupload()
13389: fname: filename (including subdirectories) for the file
13390: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13391: allfiles: reference to hash used to store objects found by parser
13392: codebase: reference to hash used for codebases of java objects found by parser
13393: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13394: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13395: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13396: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13397: context: if 'overwrite', will move the uploaded file from its temporary location to
13398: userfiles to facilitate overwriting a previously uploaded file with same name.
13399: mimetype: reference to scalar to accommodate mime type determined
13400: from File::MMagic if $parser = parse.
13401:
13402: returns either the url of the uploaded file (/uploaded/....) if successful
13403: and /adm/notfound.html if unsuccessful (or an error message if context
13404: was 'overwrite').
13405:
13406:
13407: =item *
13408:
13409: renameuserfile(): renames an existing userfile to a new name
13410:
13411: Args:
13412: docuname: username or courseid of destination for the file
13413: docudom: domain of user/course of destination for the file
13414: old: current file name (including any subdirs under userfiles)
13415: new: desired file name (including any subdirs under userfiles)
13416:
13417: =item *
13418:
13419: mkdiruserfile(): creates a directory is a userfiles dir
13420:
13421: Args:
13422: docuname: username or courseid of destination for the file
13423: docudom: domain of user/course of destination for the file
13424: dir: dir to create (including any subdirs under userfiles)
13425:
13426: =item *
13427:
13428: removeuserfile(): removes a file that exists in userfiles
13429:
13430: Args:
13431: docuname: username or courseid of destination for the file
13432: docudom: domain of user/course of destination for the file
13433: fname: filname to delete (including any subdirs under userfiles)
13434:
13435: =item *
13436:
13437: removeuploadedurl(): convience function for removeuserfile()
13438:
13439: Args:
13440: url: a full /uploaded/... url to delete
13441:
13442: =item *
13443:
13444: get_portfile_permissions():
13445: Args:
13446: domain: domain of user or course contain the portfolio files
13447: user: name of user or num of course contain the portfolio files
13448: Returns:
13449: hashref of a dump of the proper file_permissions.db
13450:
13451:
13452: =item *
13453:
13454: get_access_controls():
13455:
13456: Args:
13457: current_permissions: the hash ref returned from get_portfile_permissions()
13458: group: (optional) the group you want the files associated with
13459: file: (optional) the file you want access info on
13460:
13461: Returns:
13462: a hash (keys are file names) of hashes containing
13463: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13464: values are XML containing access control settings (see below)
13465:
13466: Internal notes:
13467:
13468: access controls are stored in file_permissions.db as key=value pairs.
13469: key -> path to file/file_name\0uniqueID:scope_end_start
13470: where scope -> public,guest,course,group,domains or users.
13471: end -> UNIX time for end of access (0 -> no end date)
13472: start -> UNIX time for start of access
13473:
13474: value -> XML description of access control
13475: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13476: <start></start>
13477: <end></end>
13478:
13479: <password></password> for scope type = guest
13480:
13481: <domain></domain> for scope type = course or group
13482: <number></number>
13483: <roles id="">
13484: <role></role>
13485: <access></access>
13486: <section></section>
13487: <group></group>
13488: </roles>
13489:
13490: <dom></dom> for scope type = domains
13491:
13492: <users> for scope type = users
13493: <user>
13494: <uname></uname>
13495: <udom></udom>
13496: </user>
13497: </users>
13498: </scope>
13499:
13500: Access data is also aggregated for each file in an additional key=value pair:
13501: key -> path to file/file_name\0accesscontrol
13502: value -> reference to hash
13503: hash contains key = value pairs
13504: where key = uniqueID:scope_end_start
13505: value = UNIX time record was last updated
13506:
13507: Used to improve speed of look-ups of access controls for each file.
13508:
13509: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13510:
13511: =item *
13512:
13513: modify_access_controls():
13514:
13515: Modifies access controls for a portfolio file
13516: Args
13517: 1. file name
13518: 2. reference to hash of required changes,
13519: 3. domain
13520: 4. username
13521: where domain,username are the domain of the portfolio owner
13522: (either a user or a course)
13523:
13524: Returns:
13525: 1. result of additions or updates ('ok' or 'error', with error message).
13526: 2. result of deletions ('ok' or 'error', with error message).
13527: 3. reference to hash of any new or updated access controls.
13528: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13529: key = integer (inbound ID)
13530: value = uniqueID
13531:
13532: =item *
13533:
13534: get_timebased_id():
13535:
13536: Attempts to get a unique timestamp-based suffix for use with items added to a
13537: course via the Course Editor (e.g., folders, composite pages,
13538: group bulletin boards).
13539:
13540: Args: (first three required; six others optional)
13541:
13542: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
13543: docssequence, or name of group
13544:
13545: 2. keyid (alphanumeric): name of temporary locking key in hash,
13546: e.g., num, boardids
13547:
13548: 3. namespace: name of gdbm file used to store suffixes already assigned;
13549: file will be named nohist_namespace.db
13550:
13551: 4. cdom: domain of course; default is current course domain from %env
13552:
13553: 5. cnum: course number; default is current course number from %env
13554:
13555: 6. idtype: set to concat if an additional digit is to be appended to the
13556: unix timestamp to form the suffix, if the plain timestamp is already
13557: in use. Default is to not do this, but simply increment the unix
13558: timestamp by 1 until a unique key is obtained.
13559:
13560: 7. who: holder of locking key; defaults to user:domain for user.
13561:
13562: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
13563: retrying); default is 3.
13564:
13565: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
13566:
13567: Returns:
13568:
13569: 1. suffix obtained (numeric)
13570:
13571: 2. result of deleting locking key (ok if deleted, or lock never obtained)
13572:
13573: 3. error: contains (localized) error message if an error occurred.
13574:
13575:
13576: =back
13577:
13578: =head2 HTTP Helper Routines
13579:
13580: =over 4
13581:
13582: =item *
13583:
13584: escape() : unpack non-word characters into CGI-compatible hex codes
13585:
13586: =item *
13587:
13588: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13589:
13590: =back
13591:
13592: =head1 PRIVATE SUBROUTINES
13593:
13594: =head2 Underlying communication routines (Shouldn't call)
13595:
13596: =over 4
13597:
13598: =item *
13599:
13600: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13601:
13602: =item *
13603:
13604: reply() : uses subreply to send a message to remote machine, logs all failures
13605:
13606: =item *
13607:
13608: critical() : passes a critical message to another server; if cannot
13609: get through then place message in connection buffer directory and
13610: returns con_delayed, if incapable of saving message, returns
13611: con_failed
13612:
13613: =item *
13614:
13615: reconlonc() : tries to reconnect lonc client processes.
13616:
13617: =back
13618:
13619: =head2 Resource Access Logging
13620:
13621: =over 4
13622:
13623: =item *
13624:
13625: flushcourselogs() : flush (save) buffer logs and access logs
13626:
13627: =item *
13628:
13629: courselog($what) : save message for course in hash
13630:
13631: =item *
13632:
13633: courseacclog($what) : save message for course using &courselog(). Perform
13634: special processing for specific resource types (problems, exams, quizzes, etc).
13635:
13636: =item *
13637:
13638: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13639: as a PerlChildExitHandler
13640:
13641: =back
13642:
13643: =head2 Other
13644:
13645: =over 4
13646:
13647: =item *
13648:
13649: symblist($mapname,%newhash) : update symbolic storage links
13650:
13651: =back
13652:
13653: =cut
13654:
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