1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1223 2013/05/21 18:57:45 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: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2027: return %domdefaults;
2028: }
2029:
2030: # --------------------------------------------------- Assign a key to a student
2031:
2032: sub assign_access_key {
2033: #
2034: # a valid key looks like uname:udom#comments
2035: # comments are being appended
2036: #
2037: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2038: $kdom=
2039: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2040: $knum=
2041: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2042: $cdom=
2043: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2044: $cnum=
2045: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2046: $udom=$env{'user.name'} unless (defined($udom));
2047: $uname=$env{'user.domain'} unless (defined($uname));
2048: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2049: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2050: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2051: # assigned to this person
2052: # - this should not happen,
2053: # unless something went wrong
2054: # the first time around
2055: # ready to assign
2056: $logentry=$1.'; '.$logentry;
2057: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2058: $kdom,$knum) eq 'ok') {
2059: # key now belongs to user
2060: my $envkey='key.'.$cdom.'_'.$cnum;
2061: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2062: &appenv({'environment.'.$envkey => $ckey});
2063: return 'ok';
2064: } else {
2065: return
2066: 'error: Count not permanently assign key, will need to be re-entered later.';
2067: }
2068: } else {
2069: return 'error: Could not assign key, try again later.';
2070: }
2071: } elsif (!$existing{$ckey}) {
2072: # the key does not exist
2073: return 'error: The key does not exist';
2074: } else {
2075: # the key is somebody else's
2076: return 'error: The key is already in use';
2077: }
2078: }
2079:
2080: # ------------------------------------------ put an additional comment on a key
2081:
2082: sub comment_access_key {
2083: #
2084: # a valid key looks like uname:udom#comments
2085: # comments are being appended
2086: #
2087: my ($ckey,$cdom,$cnum,$logentry)=@_;
2088: $cdom=
2089: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2090: $cnum=
2091: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2092: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2093: if ($existing{$ckey}) {
2094: $existing{$ckey}.='; '.$logentry;
2095: # ready to assign
2096: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2097: $cdom,$cnum) eq 'ok') {
2098: return 'ok';
2099: } else {
2100: return 'error: Count not store comment.';
2101: }
2102: } else {
2103: # the key does not exist
2104: return 'error: The key does not exist';
2105: }
2106: }
2107:
2108: # ------------------------------------------------------ Generate a set of keys
2109:
2110: sub generate_access_keys {
2111: my ($number,$cdom,$cnum,$logentry)=@_;
2112: $cdom=
2113: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2114: $cnum=
2115: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2116: unless (&allowed('mky',$cdom)) { return 0; }
2117: unless (($cdom) && ($cnum)) { return 0; }
2118: if ($number>10000) { return 0; }
2119: sleep(2); # make sure don't get same seed twice
2120: srand(time()^($$+($$<<15))); # from "Programming Perl"
2121: my $total=0;
2122: for (my $i=1;$i<=$number;$i++) {
2123: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2124: sprintf("%lx",int(100000*rand)).'-'.
2125: sprintf("%lx",int(100000*rand));
2126: $newkey=~s/1/g/g; # folks mix up 1 and l
2127: $newkey=~s/0/h/g; # and also 0 and O
2128: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2129: if ($existing{$newkey}) {
2130: $i--;
2131: } else {
2132: if (&put('accesskeys',
2133: { $newkey => '# generated '.localtime().
2134: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2135: '; '.$logentry },
2136: $cdom,$cnum) eq 'ok') {
2137: $total++;
2138: }
2139: }
2140: }
2141: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2142: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2143: return $total;
2144: }
2145:
2146: # ------------------------------------------------------- Validate an accesskey
2147:
2148: sub validate_access_key {
2149: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2150: $cdom=
2151: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2152: $cnum=
2153: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2154: $udom=$env{'user.domain'} unless (defined($udom));
2155: $uname=$env{'user.name'} unless (defined($uname));
2156: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2157: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2158: }
2159:
2160: # ------------------------------------- Find the section of student in a course
2161: sub devalidate_getsection_cache {
2162: my ($udom,$unam,$courseid)=@_;
2163: my $hashid="$udom:$unam:$courseid";
2164: &devalidate_cache_new('getsection',$hashid);
2165: }
2166:
2167: sub courseid_to_courseurl {
2168: my ($courseid) = @_;
2169: #already url style courseid
2170: return $courseid if ($courseid =~ m{^/});
2171:
2172: if (exists($env{'course.'.$courseid.'.num'})) {
2173: my $cnum = $env{'course.'.$courseid.'.num'};
2174: my $cdom = $env{'course.'.$courseid.'.domain'};
2175: return "/$cdom/$cnum";
2176: }
2177:
2178: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2179: if (exists($courseinfo{'num'})) {
2180: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2181: }
2182:
2183: return undef;
2184: }
2185:
2186: sub getsection {
2187: my ($udom,$unam,$courseid)=@_;
2188: my $cachetime=1800;
2189:
2190: my $hashid="$udom:$unam:$courseid";
2191: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2192: if (defined($cached)) { return $result; }
2193:
2194: my %Pending;
2195: my %Expired;
2196: #
2197: # Each role can either have not started yet (pending), be active,
2198: # or have expired.
2199: #
2200: # If there is an active role, we are done.
2201: #
2202: # If there is more than one role which has not started yet,
2203: # choose the one which will start sooner
2204: # If there is one role which has not started yet, return it.
2205: #
2206: # If there is more than one expired role, choose the one which ended last.
2207: # If there is a role which has expired, return it.
2208: #
2209: $courseid = &courseid_to_courseurl($courseid);
2210: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2211: foreach my $key (keys(%roleshash)) {
2212: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2213: my $section=$1;
2214: if ($key eq $courseid.'_st') { $section=''; }
2215: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2216: my $now=time;
2217: if (defined($end) && $end && ($now > $end)) {
2218: $Expired{$end}=$section;
2219: next;
2220: }
2221: if (defined($start) && $start && ($now < $start)) {
2222: $Pending{$start}=$section;
2223: next;
2224: }
2225: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2226: }
2227: #
2228: # Presumedly there will be few matching roles from the above
2229: # loop and the sorting time will be negligible.
2230: if (scalar(keys(%Pending))) {
2231: my ($time) = sort {$a <=> $b} keys(%Pending);
2232: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2233: }
2234: if (scalar(keys(%Expired))) {
2235: my @sorted = sort {$a <=> $b} keys(%Expired);
2236: my $time = pop(@sorted);
2237: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2238: }
2239: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2240: }
2241:
2242: sub save_cache {
2243: &purge_remembered();
2244: #&Apache::loncommon::validate_page();
2245: undef(%env);
2246: undef($env_loaded);
2247: }
2248:
2249: my $to_remember=-1;
2250: my %remembered;
2251: my %accessed;
2252: my $kicks=0;
2253: my $hits=0;
2254: sub make_key {
2255: my ($name,$id) = @_;
2256: if (length($id) > 65
2257: && length(&escape($id)) > 200) {
2258: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2259: }
2260: return &escape($name.':'.$id);
2261: }
2262:
2263: sub devalidate_cache_new {
2264: my ($name,$id,$debug) = @_;
2265: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2266: $id=&make_key($name,$id);
2267: $memcache->delete($id);
2268: delete($remembered{$id});
2269: delete($accessed{$id});
2270: }
2271:
2272: sub is_cached_new {
2273: my ($name,$id,$debug) = @_;
2274: $id=&make_key($name,$id);
2275: if (exists($remembered{$id})) {
2276: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2277: $accessed{$id}=[&gettimeofday()];
2278: $hits++;
2279: return ($remembered{$id},1);
2280: }
2281: my $value = $memcache->get($id);
2282: if (!(defined($value))) {
2283: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2284: return (undef,undef);
2285: }
2286: if ($value eq '__undef__') {
2287: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2288: $value=undef;
2289: }
2290: &make_room($id,$value,$debug);
2291: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2292: return ($value,1);
2293: }
2294:
2295: sub do_cache_new {
2296: my ($name,$id,$value,$time,$debug) = @_;
2297: $id=&make_key($name,$id);
2298: my $setvalue=$value;
2299: if (!defined($setvalue)) {
2300: $setvalue='__undef__';
2301: }
2302: if (!defined($time) ) {
2303: $time=600;
2304: }
2305: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2306: my $result = $memcache->set($id,$setvalue,$time);
2307: if (! $result) {
2308: &logthis("caching of id -> $id failed");
2309: $memcache->disconnect_all();
2310: }
2311: # need to make a copy of $value
2312: &make_room($id,$value,$debug);
2313: return $value;
2314: }
2315:
2316: sub make_room {
2317: my ($id,$value,$debug)=@_;
2318:
2319: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2320: : $value;
2321: if ($to_remember<0) { return; }
2322: $accessed{$id}=[&gettimeofday()];
2323: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2324: my $to_kick;
2325: my $max_time=0;
2326: foreach my $other (keys(%accessed)) {
2327: if (&tv_interval($accessed{$other}) > $max_time) {
2328: $to_kick=$other;
2329: $max_time=&tv_interval($accessed{$other});
2330: }
2331: }
2332: delete($remembered{$to_kick});
2333: delete($accessed{$to_kick});
2334: $kicks++;
2335: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2336: return;
2337: }
2338:
2339: sub purge_remembered {
2340: #&logthis("Tossing ".scalar(keys(%remembered)));
2341: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2342: undef(%remembered);
2343: undef(%accessed);
2344: }
2345: # ------------------------------------- Read an entry from a user's environment
2346:
2347: sub userenvironment {
2348: my ($udom,$unam,@what)=@_;
2349: my $items;
2350: foreach my $item (@what) {
2351: $items.=&escape($item).'&';
2352: }
2353: $items=~s/\&$//;
2354: my %returnhash=();
2355: my $uhome = &homeserver($unam,$udom);
2356: unless ($uhome eq 'no_host') {
2357: my @answer=split(/\&/,
2358: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2359: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2360: return %returnhash;
2361: }
2362: my $i;
2363: for ($i=0;$i<=$#what;$i++) {
2364: $returnhash{$what[$i]}=&unescape($answer[$i]);
2365: }
2366: }
2367: return %returnhash;
2368: }
2369:
2370: # ---------------------------------------------------------- Get a studentphoto
2371: sub studentphoto {
2372: my ($udom,$unam,$ext) = @_;
2373: my $home=&Apache::lonnet::homeserver($unam,$udom);
2374: if (defined($env{'request.course.id'})) {
2375: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2376: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2377: return(&retrievestudentphoto($udom,$unam,$ext));
2378: } else {
2379: my ($result,$perm_reqd)=
2380: &Apache::lonnet::auto_photo_permission($unam,$udom);
2381: if ($result eq 'ok') {
2382: if (!($perm_reqd eq 'yes')) {
2383: return(&retrievestudentphoto($udom,$unam,$ext));
2384: }
2385: }
2386: }
2387: }
2388: } else {
2389: my ($result,$perm_reqd) =
2390: &Apache::lonnet::auto_photo_permission($unam,$udom);
2391: if ($result eq 'ok') {
2392: if (!($perm_reqd eq 'yes')) {
2393: return(&retrievestudentphoto($udom,$unam,$ext));
2394: }
2395: }
2396: }
2397: return '/adm/lonKaputt/lonlogo_broken.gif';
2398: }
2399:
2400: sub retrievestudentphoto {
2401: my ($udom,$unam,$ext,$type) = @_;
2402: my $home=&Apache::lonnet::homeserver($unam,$udom);
2403: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2404: if ($ret eq 'ok') {
2405: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2406: if ($type eq 'thumbnail') {
2407: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2408: }
2409: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2410: return $tokenurl;
2411: } else {
2412: if ($type eq 'thumbnail') {
2413: return '/adm/lonKaputt/genericstudent_tn.gif';
2414: } else {
2415: return '/adm/lonKaputt/lonlogo_broken.gif';
2416: }
2417: }
2418: }
2419:
2420: # -------------------------------------------------------------------- New chat
2421:
2422: sub chatsend {
2423: my ($newentry,$anon,$group)=@_;
2424: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2425: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2426: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2427: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2428: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2429: &escape($newentry)).':'.$group,$chome);
2430: }
2431:
2432: # ------------------------------------------ Find current version of a resource
2433:
2434: sub getversion {
2435: my $fname=&clutter(shift);
2436: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2437: return ¤tversion(&filelocation('',$fname));
2438: }
2439:
2440: sub currentversion {
2441: my $fname=shift;
2442: my $author=$fname;
2443: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2444: my ($udom,$uname)=split(/\//,$author);
2445: my $home=&homeserver($uname,$udom);
2446: if ($home eq 'no_host') {
2447: return -1;
2448: }
2449: my $answer=&reply("currentversion:$fname",$home);
2450: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2451: return -1;
2452: }
2453: return $answer;
2454: }
2455:
2456: #
2457: # Return special version number of resource if set by override, empty otherwise
2458: #
2459: sub usedversion {
2460: my $fname=shift;
2461: unless ($fname) { $fname=$env{'request.uri'}; }
2462: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2463: if ($urlversion) { return $urlversion; }
2464: return '';
2465: }
2466:
2467: # ----------------------------- Subscribe to a resource, return URL if possible
2468:
2469: sub subscribe {
2470: my $fname=shift;
2471: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2472: $fname=~s/[\n\r]//g;
2473: my $author=$fname;
2474: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2475: my ($udom,$uname)=split(/\//,$author);
2476: my $home=homeserver($uname,$udom);
2477: if ($home eq 'no_host') {
2478: return 'not_found';
2479: }
2480: my $answer=reply("sub:$fname",$home);
2481: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2482: $answer.=' by '.$home;
2483: }
2484: return $answer;
2485: }
2486:
2487: # -------------------------------------------------------------- Replicate file
2488:
2489: sub repcopy {
2490: my $filename=shift;
2491: $filename=~s/\/+/\//g;
2492: my $londocroot = $perlvar{'lonDocRoot'};
2493: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2494: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2495: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2496: $filename=~m{^/*(uploaded|editupload)/}) {
2497: return &repcopy_userfile($filename);
2498: }
2499: $filename=~s/[\n\r]//g;
2500: my $transname="$filename.in.transfer";
2501: # FIXME: this should flock
2502: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2503: my $remoteurl=subscribe($filename);
2504: if ($remoteurl =~ /^con_lost by/) {
2505: &logthis("Subscribe returned $remoteurl: $filename");
2506: return 'unavailable';
2507: } elsif ($remoteurl eq 'not_found') {
2508: #&logthis("Subscribe returned not_found: $filename");
2509: return 'not_found';
2510: } elsif ($remoteurl =~ /^rejected by/) {
2511: &logthis("Subscribe returned $remoteurl: $filename");
2512: return 'forbidden';
2513: } elsif ($remoteurl eq 'directory') {
2514: return 'ok';
2515: } else {
2516: my $author=$filename;
2517: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2518: my ($udom,$uname)=split(/\//,$author);
2519: my $home=homeserver($uname,$udom);
2520: unless ($home eq $perlvar{'lonHostID'}) {
2521: my @parts=split(/\//,$filename);
2522: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2523: if ($path ne "$londocroot/res") {
2524: &logthis("Malconfiguration for replication: $filename");
2525: return 'bad_request';
2526: }
2527: my $count;
2528: for ($count=5;$count<$#parts;$count++) {
2529: $path.="/$parts[$count]";
2530: if ((-e $path)!=1) {
2531: mkdir($path,0777);
2532: }
2533: }
2534: my $ua=new LWP::UserAgent;
2535: my $request=new HTTP::Request('GET',"$remoteurl");
2536: my $response=$ua->request($request,$transname);
2537: if ($response->is_error()) {
2538: unlink($transname);
2539: my $message=$response->status_line;
2540: &logthis("<font color=\"blue\">WARNING:"
2541: ." LWP get: $message: $filename</font>");
2542: return 'unavailable';
2543: } else {
2544: if ($remoteurl!~/\.meta$/) {
2545: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2546: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2547: if ($mresponse->is_error()) {
2548: unlink($filename.'.meta');
2549: &logthis(
2550: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2551: }
2552: }
2553: rename($transname,$filename);
2554: return 'ok';
2555: }
2556: }
2557: }
2558: }
2559:
2560: # ------------------------------------------------ Get server side include body
2561: sub ssi_body {
2562: my ($filelink,%form)=@_;
2563: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2564: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2565: }
2566: my $output='';
2567: my $response;
2568: if ($filelink=~/^https?\:/) {
2569: ($output,$response)=&externalssi($filelink);
2570: } else {
2571: $filelink .= $filelink=~/\?/ ? '&' : '?';
2572: $filelink .= 'inhibitmenu=yes';
2573: ($output,$response)=&ssi($filelink,%form);
2574: }
2575: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2576: $output=~s/^.*?\<body[^\>]*\>//si;
2577: $output=~s/\<\/body\s*\>.*?$//si;
2578: if (wantarray) {
2579: return ($output, $response);
2580: } else {
2581: return $output;
2582: }
2583: }
2584:
2585: # --------------------------------------------------------- Server Side Include
2586:
2587: sub absolute_url {
2588: my ($host_name) = @_;
2589: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2590: if ($host_name eq '') {
2591: $host_name = $ENV{'SERVER_NAME'};
2592: }
2593: return $protocol.$host_name;
2594: }
2595:
2596: #
2597: # Server side include.
2598: # Parameters:
2599: # fn Possibly encrypted resource name/id.
2600: # form Hash that describes how the rendering should be done
2601: # and other things.
2602: # Returns:
2603: # Scalar context: The content of the response.
2604: # Array context: 2 element list of the content and the full response object.
2605: #
2606: sub ssi {
2607:
2608: my ($fn,%form)=@_;
2609: my $ua=new LWP::UserAgent;
2610: my $request;
2611:
2612: $form{'no_update_last_known'}=1;
2613: &Apache::lonenc::check_encrypt(\$fn);
2614: if (%form) {
2615: $request=new HTTP::Request('POST',&absolute_url().$fn);
2616: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2617: } else {
2618: $request=new HTTP::Request('GET',&absolute_url().$fn);
2619: }
2620:
2621: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2622: my $response= $ua->request($request);
2623: my $content = $response->content;
2624:
2625:
2626: if (wantarray) {
2627: return ($content, $response);
2628: } else {
2629: return $content;
2630: }
2631: }
2632:
2633: sub externalssi {
2634: my ($url)=@_;
2635: my $ua=new LWP::UserAgent;
2636: my $request=new HTTP::Request('GET',$url);
2637: my $response=$ua->request($request);
2638: if (wantarray) {
2639: return ($response->content, $response);
2640: } else {
2641: return $response->content;
2642: }
2643: }
2644:
2645: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2646:
2647: sub allowuploaded {
2648: my ($srcurl,$url)=@_;
2649: $url=&clutter(&declutter($url));
2650: my $dir=$url;
2651: $dir=~s/\/[^\/]+$//;
2652: my %httpref=();
2653: my $httpurl=&hreflocation('',$url);
2654: $httpref{'httpref.'.$httpurl}=$srcurl;
2655: &Apache::lonnet::appenv(\%httpref);
2656: }
2657:
2658: #
2659: # Determine if the current user should be able to edit a particular resource,
2660: # when viewing in course context.
2661: # (a) When viewing resource used to determine if "Edit" item is included in
2662: # Functions.
2663: # (b) When displaying folder contents in course editor, used to determine if
2664: # "Edit" link will be displayed alongside resource.
2665: #
2666: # input: six args -- filename (decluttered), course number, course domain,
2667: # url, symb (if registered) and group (if this is a group
2668: # item -- e.g., bulletin board, group page etc.).
2669: # output: array of five scalars --
2670: # $cfile -- url for file editing if editable on current server
2671: # $home -- homeserver of resource (i.e., for author if published,
2672: # or course if uploaded.).
2673: # $switchserver -- 1 if server switch will be needed.
2674: # $forceedit -- 1 if icon/link should be to go to edit mode
2675: # $forceview -- 1 if icon/link should be to go to view mode
2676: #
2677:
2678: sub can_edit_resource {
2679: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2680: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2681: #
2682: # For aboutme pages user can only edit his/her own.
2683: #
2684: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2685: my ($sdom,$sname) = ($1,$2);
2686: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2687: $home = $env{'user.home'};
2688: $cfile = $resurl;
2689: if ($env{'form.forceedit'}) {
2690: $forceview = 1;
2691: } else {
2692: $forceedit = 1;
2693: }
2694: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2695: } else {
2696: return;
2697: }
2698: }
2699:
2700: if ($env{'request.course.id'}) {
2701: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2702: if ($group ne '') {
2703: # if this is a group homepage or group bulletin board, check group privs
2704: my $allowed = 0;
2705: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2706: if ((&allowed('mdg',$env{'request.course.id'}.
2707: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2708: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2709: $allowed = 1;
2710: }
2711: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2712: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2713: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2714: $allowed = 1;
2715: }
2716: }
2717: if ($allowed) {
2718: $home=&homeserver($cnum,$cdom);
2719: if ($env{'form.forceedit'}) {
2720: $forceview = 1;
2721: } else {
2722: $forceedit = 1;
2723: }
2724: $cfile = $resurl;
2725: } else {
2726: return;
2727: }
2728: } else {
2729: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2730: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2731: return;
2732: }
2733: } elsif (!$crsedit) {
2734: #
2735: # No edit allowed where CC has switched to student role.
2736: #
2737: return;
2738: }
2739: }
2740: }
2741:
2742: if ($file ne '') {
2743: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2744: if (&is_course_upload($file,$cnum,$cdom)) {
2745: $uploaded = 1;
2746: $incourse = 1;
2747: if ($file =~/\.(htm|html|css|js|txt)$/) {
2748: $cfile = &hreflocation('',$file);
2749: if ($env{'form.forceedit'}) {
2750: $forceview = 1;
2751: } else {
2752: $forceedit = 1;
2753: }
2754: }
2755: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2756: $incourse = 1;
2757: if ($env{'form.forceedit'}) {
2758: $forceview = 1;
2759: } else {
2760: $forceedit = 1;
2761: }
2762: $cfile = $resurl;
2763: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2764: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2765: $incourse = 1;
2766: if ($env{'form.forceedit'}) {
2767: $forceview = 1;
2768: } else {
2769: $forceedit = 1;
2770: }
2771: $cfile = $resurl;
2772: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2773: $incourse = 1;
2774: $cfile = $resurl.'/smpedit';
2775: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2776: $incourse = 1;
2777: if ($env{'form.forceedit'}) {
2778: $forceview = 1;
2779: } else {
2780: $forceedit = 1;
2781: }
2782: $cfile = $resurl;
2783: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2784: $incourse = 1;
2785: if ($env{'form.forceedit'}) {
2786: $forceview = 1;
2787: } else {
2788: $forceedit = 1;
2789: }
2790: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2791: }
2792: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2793: my $template = '/res/lib/templates/simpleproblem.problem';
2794: if (&is_on_map($template)) {
2795: $incourse = 1;
2796: $forceview = 1;
2797: $cfile = $template;
2798: }
2799: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2800: $incourse = 1;
2801: if ($env{'form.forceedit'}) {
2802: $forceview = 1;
2803: } else {
2804: $forceedit = 1;
2805: }
2806: $cfile = $resurl;
2807: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2808: $incourse = 1;
2809: $forceview = 1;
2810: if ($symb) {
2811: my ($map,$id,$res)=&decode_symb($symb);
2812: $env{'request.symb'} = $symb;
2813: $cfile = &clutter($res);
2814: } else {
2815: $cfile = $env{'form.suppurl'};
2816: $cfile =~ s{^http://}{};
2817: $cfile = '/adm/wrapper/ext/'.$cfile;
2818: }
2819: }
2820: }
2821: if ($uploaded || $incourse) {
2822: $home=&homeserver($cnum,$cdom);
2823: } elsif ($file !~ m{/$}) {
2824: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2825: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2826: # Check that the user has permission to edit this resource
2827: my $setpriv = 1;
2828: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2829: if (defined($cfudom)) {
2830: $home=&homeserver($cfuname,$cfudom);
2831: $cfile=$file;
2832: }
2833: }
2834: if (($cfile ne '') && (!$incourse || $uploaded) &&
2835: (($home ne '') && ($home ne 'no_host'))) {
2836: my @ids=¤t_machine_ids();
2837: unless (grep(/^\Q$home\E$/,@ids)) {
2838: $switchserver=1;
2839: }
2840: }
2841: }
2842: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2843: }
2844:
2845: sub is_course_upload {
2846: my ($file,$cnum,$cdom) = @_;
2847: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2848: $uploadpath =~ s{^\/}{};
2849: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
2850: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
2851: return 1;
2852: }
2853: return;
2854: }
2855:
2856: sub in_course {
2857: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2858: if ($hideprivileged) {
2859: my $skipuser;
2860: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2861: my @possdoms = ($cdom);
2862: if ($coursehash{'checkforpriv'}) {
2863: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
2864: }
2865: if (&privileged($uname,$udom,\@possdoms)) {
2866: $skipuser = 1;
2867: if ($coursehash{'nothideprivileged'}) {
2868: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2869: my $user;
2870: if ($item =~ /:/) {
2871: $user = $item;
2872: } else {
2873: $user = join(':',split(/[\@]/,$item));
2874: }
2875: if ($user eq $uname.':'.$udom) {
2876: undef($skipuser);
2877: last;
2878: }
2879: }
2880: }
2881: if ($skipuser) {
2882: return 0;
2883: }
2884: }
2885: }
2886: $type ||= 'any';
2887: if (!defined($cdom) || !defined($cnum)) {
2888: my $cid = $env{'request.course.id'};
2889: $cdom = $env{'course.'.$cid.'.domain'};
2890: $cnum = $env{'course.'.$cid.'.num'};
2891: }
2892: my $typesref;
2893: if (($type eq 'any') || ($type eq 'all')) {
2894: $typesref = ['active','previous','future'];
2895: } elsif ($type eq 'previous' || $type eq 'future') {
2896: $typesref = [$type];
2897: }
2898: my %roles = &get_my_roles($uname,$udom,'userroles',
2899: $typesref,undef,[$cdom]);
2900: my ($tmp) = keys(%roles);
2901: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
2902: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
2903: if (@course_roles > 0) {
2904: return 1;
2905: }
2906: return 0;
2907: }
2908:
2909: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2910: # input: action, courseID, current domain, intended
2911: # path to file, source of file, instruction to parse file for objects,
2912: # ref to hash for embedded objects,
2913: # ref to hash for codebase of java objects.
2914: # reference to scalar to accommodate mime type determined
2915: # from File::MMagic if $parser = parse.
2916: #
2917: # output: url to file (if action was uploaddoc),
2918: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2919: #
2920: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2921: # course.
2922: #
2923: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2924: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2925: # course's home server.
2926: #
2927: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2928: # be copied from $source (current location) to
2929: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2930: # and will then be copied to
2931: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2932: # course's home server.
2933: #
2934: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2935: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2936: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2937: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2938: # in course's home server.
2939: #
2940:
2941: sub process_coursefile {
2942: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2943: $mimetype)=@_;
2944: my $fetchresult;
2945: my $home=&homeserver($docuname,$docudom);
2946: if ($action eq 'propagate') {
2947: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2948: $home);
2949: } else {
2950: my $fpath = '';
2951: my $fname = $file;
2952: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2953: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2954: my $filepath = &build_filepath($fpath);
2955: if ($action eq 'copy') {
2956: if ($source eq '') {
2957: $fetchresult = 'no source file';
2958: return $fetchresult;
2959: } else {
2960: my $destination = $filepath.'/'.$fname;
2961: rename($source,$destination);
2962: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2963: $home);
2964: }
2965: } elsif ($action eq 'uploaddoc') {
2966: open(my $fh,'>'.$filepath.'/'.$fname);
2967: print $fh $env{'form.'.$source};
2968: close($fh);
2969: if ($parser eq 'parse') {
2970: my $mm = new File::MMagic;
2971: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2972: if ($type eq 'text/html') {
2973: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2974: unless ($parse_result eq 'ok') {
2975: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2976: }
2977: }
2978: if (ref($mimetype)) {
2979: $$mimetype = $type;
2980: }
2981: }
2982: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2983: $home);
2984: if ($fetchresult eq 'ok') {
2985: return '/uploaded/'.$fpath.'/'.$fname;
2986: } else {
2987: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2988: ' to host '.$home.': '.$fetchresult);
2989: return '/adm/notfound.html';
2990: }
2991: }
2992: }
2993: unless ( $fetchresult eq 'ok') {
2994: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2995: ' to host '.$home.': '.$fetchresult);
2996: }
2997: return $fetchresult;
2998: }
2999:
3000: sub build_filepath {
3001: my ($fpath) = @_;
3002: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3003: unless ($fpath eq '') {
3004: my @parts=split('/',$fpath);
3005: foreach my $part (@parts) {
3006: $filepath.= '/'.$part;
3007: if ((-e $filepath)!=1) {
3008: mkdir($filepath,0777);
3009: }
3010: }
3011: }
3012: return $filepath;
3013: }
3014:
3015: sub store_edited_file {
3016: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3017: my $file = $primary_url;
3018: $file =~ s#^/uploaded/$docudom/$docuname/##;
3019: my $fpath = '';
3020: my $fname = $file;
3021: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3022: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3023: my $filepath = &build_filepath($fpath);
3024: open(my $fh,'>'.$filepath.'/'.$fname);
3025: print $fh $content;
3026: close($fh);
3027: my $home=&homeserver($docuname,$docudom);
3028: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3029: $home);
3030: if ($$fetchresult eq 'ok') {
3031: return '/uploaded/'.$fpath.'/'.$fname;
3032: } else {
3033: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3034: ' to host '.$home.': '.$$fetchresult);
3035: return '/adm/notfound.html';
3036: }
3037: }
3038:
3039: sub clean_filename {
3040: my ($fname,$args)=@_;
3041: # Replace Windows backslashes by forward slashes
3042: $fname=~s/\\/\//g;
3043: if (!$args->{'keep_path'}) {
3044: # Get rid of everything but the actual filename
3045: $fname=~s/^.*\/([^\/]+)$/$1/;
3046: }
3047: # Replace spaces by underscores
3048: $fname=~s/\s+/\_/g;
3049: # Replace all other weird characters by nothing
3050: $fname=~s{[^/\w\.\-]}{}g;
3051: # Replace all .\d. sequences with _\d. so they no longer look like version
3052: # numbers
3053: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3054: return $fname;
3055: }
3056: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3057: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3058: # image with the same aspect ratio as the original, but with dimensions which do
3059: # not exceed $resizewidth and $resizeheight.
3060:
3061: sub resizeImage {
3062: my ($img_path,$resizewidth,$resizeheight) = @_;
3063: my $ima = Image::Magick->new;
3064: my $resized;
3065: if (-e $img_path) {
3066: $ima->Read($img_path);
3067: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3068: my $width = $ima->Get('width');
3069: my $height = $ima->Get('height');
3070: if ($width > $resizewidth) {
3071: my $factor = $width/$resizewidth;
3072: my $newheight = $height/$factor;
3073: $ima->Scale(width=>$resizewidth,height=>$newheight);
3074: $resized = 1;
3075: }
3076: }
3077: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3078: my $width = $ima->Get('width');
3079: my $height = $ima->Get('height');
3080: if ($height > $resizeheight) {
3081: my $factor = $height/$resizeheight;
3082: my $newwidth = $width/$factor;
3083: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3084: $resized = 1;
3085: }
3086: }
3087: if ($resized) {
3088: $ima->Write($img_path);
3089: }
3090: }
3091: return;
3092: }
3093:
3094: # --------------- Take an uploaded file and put it into the userfiles directory
3095: # input: $formname - the contents of the file are in $env{"form.$formname"}
3096: # the desired filename is in $env{"form.$formname.filename"}
3097: # $context - possible values: coursedoc, existingfile, overwrite,
3098: # canceloverwrite, or ''.
3099: # if 'coursedoc': upload to the current course
3100: # if 'existingfile': write file to tmp/overwrites directory
3101: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3102: # $context is passed as argument to &finishuserfileupload
3103: # $subdir - directory in userfile to store the file into
3104: # $parser - instruction to parse file for objects ($parser = parse)
3105: # $allfiles - reference to hash for embedded objects
3106: # $codebase - reference to hash for codebase of java objects
3107: # $desuname - username for permanent storage of uploaded file
3108: # $dsetudom - domain for permanaent storage of uploaded file
3109: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3110: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3111: # $resizewidth - width (pixels) to which to resize uploaded image
3112: # $resizeheight - height (pixels) to which to resize uploaded image
3113: # $mimetype - reference to scalar to accommodate mime type determined
3114: # from File::MMagic.
3115: #
3116: # output: url of file in userspace, or error: <message>
3117: # or /adm/notfound.html if failure to upload occurse
3118:
3119: sub userfileupload {
3120: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3121: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3122: if (!defined($subdir)) { $subdir='unknown'; }
3123: my $fname=$env{'form.'.$formname.'.filename'};
3124: $fname=&clean_filename($fname);
3125: # See if there is anything left
3126: unless ($fname) { return 'error: no uploaded file'; }
3127: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3128: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3129: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3130: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3131: my $now = time;
3132: my $filepath;
3133: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3134: $filepath = 'tmp/helprequests/'.$now;
3135: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3136: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3137: '_'.$env{'user.domain'}.'/pending';
3138: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3139: my ($docuname,$docudom);
3140: if ($destudom) {
3141: $docudom = $destudom;
3142: } else {
3143: $docudom = $env{'user.domain'};
3144: }
3145: if ($destuname) {
3146: $docuname = $destuname;
3147: } else {
3148: $docuname = $env{'user.name'};
3149: }
3150: if (exists($env{'form.group'})) {
3151: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3152: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3153: }
3154: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3155: if ($context eq 'canceloverwrite') {
3156: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3157: if (-e $tempfile) {
3158: my @info = stat($tempfile);
3159: if ($info[9] eq $env{'form.timestamp'}) {
3160: unlink($tempfile);
3161: }
3162: }
3163: return;
3164: }
3165: }
3166: # Create the directory if not present
3167: my @parts=split(/\//,$filepath);
3168: my $fullpath = $perlvar{'lonDaemons'};
3169: for (my $i=0;$i<@parts;$i++) {
3170: $fullpath .= '/'.$parts[$i];
3171: if ((-e $fullpath)!=1) {
3172: mkdir($fullpath,0777);
3173: }
3174: }
3175: open(my $fh,'>'.$fullpath.'/'.$fname);
3176: print $fh $env{'form.'.$formname};
3177: close($fh);
3178: if ($context eq 'existingfile') {
3179: my @info = stat($fullpath.'/'.$fname);
3180: return ($fullpath.'/'.$fname,$info[9]);
3181: } else {
3182: return $fullpath.'/'.$fname;
3183: }
3184: }
3185: if ($subdir eq 'scantron') {
3186: $fname = 'scantron_orig_'.$fname;
3187: } else {
3188: $fname="$subdir/$fname";
3189: }
3190: if ($context eq 'coursedoc') {
3191: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3192: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3193: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3194: return &finishuserfileupload($docuname,$docudom,
3195: $formname,$fname,$parser,$allfiles,
3196: $codebase,$thumbwidth,$thumbheight,
3197: $resizewidth,$resizeheight,$context,$mimetype);
3198: } else {
3199: if ($env{'form.folder'}) {
3200: $fname=$env{'form.folder'}.'/'.$fname;
3201: }
3202: return &process_coursefile('uploaddoc',$docuname,$docudom,
3203: $fname,$formname,$parser,
3204: $allfiles,$codebase,$mimetype);
3205: }
3206: } elsif (defined($destuname)) {
3207: my $docuname=$destuname;
3208: my $docudom=$destudom;
3209: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3210: $parser,$allfiles,$codebase,
3211: $thumbwidth,$thumbheight,
3212: $resizewidth,$resizeheight,$context,$mimetype);
3213: } else {
3214: my $docuname=$env{'user.name'};
3215: my $docudom=$env{'user.domain'};
3216: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3217: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3218: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3219: }
3220: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3221: $parser,$allfiles,$codebase,
3222: $thumbwidth,$thumbheight,
3223: $resizewidth,$resizeheight,$context,$mimetype);
3224: }
3225: }
3226:
3227: sub finishuserfileupload {
3228: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3229: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3230: my $path=$docudom.'/'.$docuname.'/';
3231: my $filepath=$perlvar{'lonDocRoot'};
3232:
3233: my ($fnamepath,$file,$fetchthumb);
3234: $file=$fname;
3235: if ($fname=~m|/|) {
3236: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3237: $path.=$fnamepath.'/';
3238: }
3239: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3240: my $count;
3241: for ($count=4;$count<=$#parts;$count++) {
3242: $filepath.="/$parts[$count]";
3243: if ((-e $filepath)!=1) {
3244: mkdir($filepath,0777);
3245: }
3246: }
3247:
3248: # Save the file
3249: {
3250: if (!open(FH,'>'.$filepath.'/'.$file)) {
3251: &logthis('Failed to create '.$filepath.'/'.$file);
3252: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3253: return '/adm/notfound.html';
3254: }
3255: if ($context eq 'overwrite') {
3256: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3257: my $target = $filepath.'/'.$file;
3258: if (-e $source) {
3259: my @info = stat($source);
3260: if ($info[9] eq $env{'form.timestamp'}) {
3261: unless (&File::Copy::move($source,$target)) {
3262: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3263: return "Moving from $source failed";
3264: }
3265: } else {
3266: return "Temporary file: $source had unexpected date/time for last modification";
3267: }
3268: } else {
3269: return "Temporary file: $source missing";
3270: }
3271: } elsif (!print FH ($env{'form.'.$formname})) {
3272: &logthis('Failed to write to '.$filepath.'/'.$file);
3273: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3274: return '/adm/notfound.html';
3275: }
3276: close(FH);
3277: if ($resizewidth && $resizeheight) {
3278: my $mm = new File::MMagic;
3279: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3280: if ($mime_type =~ m{^image/}) {
3281: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3282: }
3283: }
3284: }
3285: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3286: if (ref($mimetype)) {
3287: if ($$mimetype eq '') {
3288: my $mm = new File::MMagic;
3289: my $type = $mm->checktype_filename($filepath.'/'.$file);
3290: $$mimetype = $type;
3291: }
3292: }
3293: }
3294: if ($parser eq 'parse') {
3295: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3296: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3297: $allfiles,$codebase);
3298: unless ($parse_result eq 'ok') {
3299: &logthis('Failed to parse '.$filepath.$file.
3300: ' for embedded media: '.$parse_result);
3301: }
3302: }
3303: }
3304: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3305: my $input = $filepath.'/'.$file;
3306: my $output = $filepath.'/'.'tn-'.$file;
3307: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3308: system("convert -sample $thumbsize $input $output");
3309: if (-e $filepath.'/'.'tn-'.$file) {
3310: $fetchthumb = 1;
3311: }
3312: }
3313:
3314: # Notify homeserver to grep it
3315: #
3316: my $docuhome=&homeserver($docuname,$docudom);
3317: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3318: if ($fetchresult eq 'ok') {
3319: if ($fetchthumb) {
3320: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3321: if ($thumbresult ne 'ok') {
3322: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3323: $docuhome.': '.$thumbresult);
3324: }
3325: }
3326: #
3327: # Return the URL to it
3328: return '/uploaded/'.$path.$file;
3329: } else {
3330: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3331: ': '.$fetchresult);
3332: return '/adm/notfound.html';
3333: }
3334: }
3335:
3336: sub extract_embedded_items {
3337: my ($fullpath,$allfiles,$codebase,$content) = @_;
3338: my @state = ();
3339: my (%lastids,%related,%shockwave,%flashvars);
3340: my %javafiles = (
3341: codebase => '',
3342: code => '',
3343: archive => ''
3344: );
3345: my %mediafiles = (
3346: src => '',
3347: movie => '',
3348: );
3349: my $p;
3350: if ($content) {
3351: $p = HTML::LCParser->new($content);
3352: } else {
3353: $p = HTML::LCParser->new($fullpath);
3354: }
3355: while (my $t=$p->get_token()) {
3356: if ($t->[0] eq 'S') {
3357: my ($tagname, $attr) = ($t->[1],$t->[2]);
3358: push(@state, $tagname);
3359: if (lc($tagname) eq 'allow') {
3360: &add_filetype($allfiles,$attr->{'src'},'src');
3361: }
3362: if (lc($tagname) eq 'img') {
3363: &add_filetype($allfiles,$attr->{'src'},'src');
3364: }
3365: if (lc($tagname) eq 'a') {
3366: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3367: &add_filetype($allfiles,$attr->{'href'},'href');
3368: }
3369: }
3370: if (lc($tagname) eq 'script') {
3371: my $src;
3372: if ($attr->{'archive'} =~ /\.jar$/i) {
3373: &add_filetype($allfiles,$attr->{'archive'},'archive');
3374: } else {
3375: if ($attr->{'src'} ne '') {
3376: $src = $attr->{'src'};
3377: &add_filetype($allfiles,$src,'src');
3378: }
3379: }
3380: my $text = $p->get_trimmed_text();
3381: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3382: my @swfargs = split(/,/,$1);
3383: foreach my $item (@swfargs) {
3384: $item =~ s/["']//g;
3385: $item =~ s/^\s+//;
3386: $item =~ s/\s+$//;
3387: }
3388: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3389: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3390: push(@{$related{$swfargs[0]}},$swfargs[2]);
3391: } else {
3392: $related{$swfargs[0]} = [$swfargs[2]];
3393: }
3394: }
3395: }
3396: }
3397: if (lc($tagname) eq 'link') {
3398: if (lc($attr->{'rel'}) eq 'stylesheet') {
3399: &add_filetype($allfiles,$attr->{'href'},'href');
3400: }
3401: }
3402: if (lc($tagname) eq 'object' ||
3403: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3404: foreach my $item (keys(%javafiles)) {
3405: $javafiles{$item} = '';
3406: }
3407: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3408: $lastids{lc($tagname)} = $attr->{'id'};
3409: }
3410: }
3411: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3412: my $name = lc($attr->{'name'});
3413: foreach my $item (keys(%javafiles)) {
3414: if ($name eq $item) {
3415: $javafiles{$item} = $attr->{'value'};
3416: last;
3417: }
3418: }
3419: my $pathfrom;
3420: foreach my $item (keys(%mediafiles)) {
3421: if ($name eq $item) {
3422: $pathfrom = $attr->{'value'};
3423: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3424: &add_filetype($allfiles,$pathfrom,$name);
3425: last;
3426: }
3427: }
3428: if ($name eq 'flashvars') {
3429: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3430: }
3431: if ($pathfrom ne '') {
3432: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3433: $pathfrom);
3434: }
3435: }
3436: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3437: foreach my $item (keys(%javafiles)) {
3438: if ($attr->{$item}) {
3439: $javafiles{$item} = $attr->{$item};
3440: last;
3441: }
3442: }
3443: foreach my $item (keys(%mediafiles)) {
3444: if ($attr->{$item}) {
3445: &add_filetype($allfiles,$attr->{$item},$item);
3446: last;
3447: }
3448: }
3449: if (lc($tagname) eq 'embed') {
3450: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3451: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3452: $attr->{'src'});
3453: }
3454: }
3455: }
3456: if ($t->[4] =~ m{/>$}) {
3457: pop(@state);
3458: }
3459: } elsif ($t->[0] eq 'E') {
3460: my ($tagname) = ($t->[1]);
3461: if ($javafiles{'codebase'} ne '') {
3462: $javafiles{'codebase'} .= '/';
3463: }
3464: if (lc($tagname) eq 'applet' ||
3465: lc($tagname) eq 'object' ||
3466: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3467: ) {
3468: foreach my $item (keys(%javafiles)) {
3469: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3470: my $file=$javafiles{'codebase'}.$javafiles{$item};
3471: &add_filetype($allfiles,$file,$item);
3472: }
3473: }
3474: }
3475: pop @state;
3476: }
3477: }
3478: foreach my $id (sort(keys(%flashvars))) {
3479: if ($shockwave{$id} ne '') {
3480: my @pairs = split(/\&/,$flashvars{$id});
3481: foreach my $pair (@pairs) {
3482: my ($key,$value) = split(/\=/,$pair);
3483: if ($key eq 'thumb') {
3484: &add_filetype($allfiles,$value,$key);
3485: } elsif ($key eq 'content') {
3486: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3487: my ($ext) = ($value =~ /\.([^.]+)$/);
3488: if ($ext ne '') {
3489: &add_filetype($allfiles,$path.$value,$ext);
3490: }
3491: }
3492: }
3493: }
3494: }
3495: return 'ok';
3496: }
3497:
3498: sub add_filetype {
3499: my ($allfiles,$file,$type)=@_;
3500: if (exists($allfiles->{$file})) {
3501: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3502: push(@{$allfiles->{$file}}, &escape($type));
3503: }
3504: } else {
3505: @{$allfiles->{$file}} = (&escape($type));
3506: }
3507: }
3508:
3509: sub embedded_dependency {
3510: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3511: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3512: if (($identifier ne '') &&
3513: (ref($related->{$identifier}) eq 'ARRAY') &&
3514: ($pathfrom ne '')) {
3515: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3516: foreach my $dep (@{$related->{$identifier}}) {
3517: &add_filetype($allfiles,$path.$dep,'object');
3518: }
3519: }
3520: }
3521: return;
3522: }
3523:
3524: sub removeuploadedurl {
3525: my ($url)=@_;
3526: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3527: return &removeuserfile($uname,$udom,$fname);
3528: }
3529:
3530: sub removeuserfile {
3531: my ($docuname,$docudom,$fname)=@_;
3532: my $home=&homeserver($docuname,$docudom);
3533: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3534: if ($result eq 'ok') {
3535: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3536: my $metafile = $fname.'.meta';
3537: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3538: my $url = "/uploaded/$docudom/$docuname/$fname";
3539: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3540: my $sqlresult =
3541: &update_portfolio_table($docuname,$docudom,$file,
3542: 'portfolio_metadata',$group,
3543: 'delete');
3544: }
3545: }
3546: return $result;
3547: }
3548:
3549: sub mkdiruserfile {
3550: my ($docuname,$docudom,$dir)=@_;
3551: my $home=&homeserver($docuname,$docudom);
3552: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3553: }
3554:
3555: sub renameuserfile {
3556: my ($docuname,$docudom,$old,$new)=@_;
3557: my $home=&homeserver($docuname,$docudom);
3558: my $result = &reply("renameuserfile:$docudom:$docuname:".
3559: &escape("$old").':'.&escape("$new"),$home);
3560: if ($result eq 'ok') {
3561: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3562: my $oldmeta = $old.'.meta';
3563: my $newmeta = $new.'.meta';
3564: my $metaresult =
3565: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3566: my $url = "/uploaded/$docudom/$docuname/$old";
3567: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3568: my $sqlresult =
3569: &update_portfolio_table($docuname,$docudom,$file,
3570: 'portfolio_metadata',$group,
3571: 'delete');
3572: }
3573: }
3574: return $result;
3575: }
3576:
3577: # ------------------------------------------------------------------------- Log
3578:
3579: sub log {
3580: my ($dom,$nam,$hom,$what)=@_;
3581: return critical("log:$dom:$nam:$what",$hom);
3582: }
3583:
3584: # ------------------------------------------------------------------ Course Log
3585: #
3586: # This routine flushes several buffers of non-mission-critical nature
3587: #
3588:
3589: sub flushcourselogs {
3590: &logthis('Flushing log buffers');
3591: #
3592: # course logs
3593: # This is a log of all transactions in a course, which can be used
3594: # for data mining purposes
3595: #
3596: # It also collects the courseid database, which lists last transaction
3597: # times and course titles for all courseids
3598: #
3599: my %courseidbuffer=();
3600: foreach my $crsid (keys(%courselogs)) {
3601: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3602: &escape($courselogs{$crsid}),
3603: $coursehombuf{$crsid}) eq 'ok') {
3604: delete $courselogs{$crsid};
3605: } else {
3606: &logthis('Failed to flush log buffer for '.$crsid);
3607: if (length($courselogs{$crsid})>40000) {
3608: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3609: " exceeded maximum size, deleting.</font>");
3610: delete $courselogs{$crsid};
3611: }
3612: }
3613: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3614: 'description' => $coursedescrbuf{$crsid},
3615: 'inst_code' => $courseinstcodebuf{$crsid},
3616: 'type' => $coursetypebuf{$crsid},
3617: 'owner' => $courseownerbuf{$crsid},
3618: };
3619: }
3620: #
3621: # Write course id database (reverse lookup) to homeserver of courses
3622: # Is used in pickcourse
3623: #
3624: foreach my $crs_home (keys(%courseidbuffer)) {
3625: my $response = &courseidput(&host_domain($crs_home),
3626: $courseidbuffer{$crs_home},
3627: $crs_home,'timeonly');
3628: }
3629: #
3630: # File accesses
3631: # Writes to the dynamic metadata of resources to get hit counts, etc.
3632: #
3633: foreach my $entry (keys(%accesshash)) {
3634: if ($entry =~ /___count$/) {
3635: my ($dom,$name);
3636: ($dom,$name,undef)=
3637: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3638: if (! defined($dom) || $dom eq '' ||
3639: ! defined($name) || $name eq '') {
3640: my $cid = $env{'request.course.id'};
3641: $dom = $env{'request.'.$cid.'.domain'};
3642: $name = $env{'request.'.$cid.'.num'};
3643: }
3644: my $value = $accesshash{$entry};
3645: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3646: my %temphash=($url => $value);
3647: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3648: if ($result eq 'ok') {
3649: delete $accesshash{$entry};
3650: }
3651: } else {
3652: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3653: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3654: my %temphash=($entry => $accesshash{$entry});
3655: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3656: delete $accesshash{$entry};
3657: }
3658: }
3659: }
3660: #
3661: # Roles
3662: # Reverse lookup of user roles for course faculty/staff and co-authorship
3663: #
3664: foreach my $entry (keys(%userrolehash)) {
3665: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3666: split(/\:/,$entry);
3667: if (&Apache::lonnet::put('nohist_userroles',
3668: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3669: $rudom,$runame) eq 'ok') {
3670: delete $userrolehash{$entry};
3671: }
3672: }
3673: #
3674: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3675: #
3676: my %domrolebuffer = ();
3677: foreach my $entry (keys(%domainrolehash)) {
3678: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3679: if ($domrolebuffer{$rudom}) {
3680: $domrolebuffer{$rudom}.='&'.&escape($entry).
3681: '='.&escape($domainrolehash{$entry});
3682: } else {
3683: $domrolebuffer{$rudom}.=&escape($entry).
3684: '='.&escape($domainrolehash{$entry});
3685: }
3686: delete $domainrolehash{$entry};
3687: }
3688: foreach my $dom (keys(%domrolebuffer)) {
3689: my %servers = &get_servers($dom,'library');
3690: foreach my $tryserver (keys(%servers)) {
3691: unless (&reply('domroleput:'.$dom.':'.
3692: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3693: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3694: }
3695: }
3696: }
3697: $dumpcount++;
3698: }
3699:
3700: sub courselog {
3701: my $what=shift;
3702: $what=time.':'.$what;
3703: unless ($env{'request.course.id'}) { return ''; }
3704: $coursedombuf{$env{'request.course.id'}}=
3705: $env{'course.'.$env{'request.course.id'}.'.domain'};
3706: $coursenumbuf{$env{'request.course.id'}}=
3707: $env{'course.'.$env{'request.course.id'}.'.num'};
3708: $coursehombuf{$env{'request.course.id'}}=
3709: $env{'course.'.$env{'request.course.id'}.'.home'};
3710: $coursedescrbuf{$env{'request.course.id'}}=
3711: $env{'course.'.$env{'request.course.id'}.'.description'};
3712: $courseinstcodebuf{$env{'request.course.id'}}=
3713: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3714: $courseownerbuf{$env{'request.course.id'}}=
3715: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3716: $coursetypebuf{$env{'request.course.id'}}=
3717: $env{'course.'.$env{'request.course.id'}.'.type'};
3718: if (defined $courselogs{$env{'request.course.id'}}) {
3719: $courselogs{$env{'request.course.id'}}.='&'.$what;
3720: } else {
3721: $courselogs{$env{'request.course.id'}}.=$what;
3722: }
3723: if (length($courselogs{$env{'request.course.id'}})>4048) {
3724: &flushcourselogs();
3725: }
3726: }
3727:
3728: sub courseacclog {
3729: my $fnsymb=shift;
3730: unless ($env{'request.course.id'}) { return ''; }
3731: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3732: if ($fnsymb=~/$LONCAPA::assess_re/) {
3733: $what.=':POST';
3734: # FIXME: Probably ought to escape things....
3735: foreach my $key (keys(%env)) {
3736: if ($key=~/^form\.(.*)/) {
3737: my $formitem = $1;
3738: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3739: $what.=':'.$formitem.'='.$env{$key};
3740: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3741: $what.=':'.$formitem.'='.$env{$key};
3742: }
3743: }
3744: }
3745: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3746: # FIXME: We should not be depending on a form parameter that someone
3747: # editing lonsearchcat.pm might change in the future.
3748: if ($env{'form.phase'} eq 'course_search') {
3749: $what.= ':POST';
3750: # FIXME: Probably ought to escape things....
3751: foreach my $element ('courseexp','crsfulltext','crsrelated',
3752: 'crsdiscuss') {
3753: $what.=':'.$element.'='.$env{'form.'.$element};
3754: }
3755: }
3756: }
3757: &courselog($what);
3758: }
3759:
3760: sub countacc {
3761: my $url=&declutter(shift);
3762: return if (! defined($url) || $url eq '');
3763: unless ($env{'request.course.id'}) { return ''; }
3764: #
3765: # Mark that this url was used in this course
3766: #
3767: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3768: #
3769: # Increase the access count for this resource in this child process
3770: #
3771: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3772: $accesshash{$key}++;
3773: }
3774:
3775: sub linklog {
3776: my ($from,$to)=@_;
3777: $from=&declutter($from);
3778: $to=&declutter($to);
3779: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3780: $accesshash{$to.'___'.$from.'___goto'}=1;
3781: }
3782:
3783: sub statslog {
3784: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3785: if ($users<2) { return; }
3786: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3787: 'course' => $env{'request.course.id'},
3788: 'sections' => '"all"',
3789: 'num_students' => $users,
3790: 'part' => $part,
3791: 'symb' => $symb,
3792: 'mean_tries' => $av_attempts,
3793: 'deg_of_diff' => $degdiff});
3794: foreach my $key (keys(%dynstore)) {
3795: $accesshash{$key}=$dynstore{$key};
3796: }
3797: }
3798:
3799: sub userrolelog {
3800: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3801: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3802: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3803: $userrolehash
3804: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3805: =$tend.':'.$tstart;
3806: }
3807: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3808: $userrolehash
3809: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3810: =$tend.':'.$tstart;
3811: }
3812: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3813: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3814: $domainrolehash
3815: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3816: = $tend.':'.$tstart;
3817: }
3818: }
3819:
3820: sub courserolelog {
3821: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3822: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3823: my $cdom = $1;
3824: my $cnum = $2;
3825: my $sec = $3;
3826: my $namespace = 'rolelog';
3827: my %storehash = (
3828: role => $trole,
3829: start => $tstart,
3830: end => $tend,
3831: selfenroll => $selfenroll,
3832: context => $context,
3833: );
3834: if ($trole eq 'gr') {
3835: $namespace = 'groupslog';
3836: $storehash{'group'} = $sec;
3837: } else {
3838: $storehash{'section'} = $sec;
3839: }
3840: &write_log('course',$namespace,\%storehash,$delflag,$username,
3841: $domain,$cnum,$cdom);
3842: if (($trole ne 'st') || ($sec ne '')) {
3843: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3844: }
3845: }
3846: return;
3847: }
3848:
3849: sub domainrolelog {
3850: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3851: if ($area =~ m{^/($match_domain)/$}) {
3852: my $cdom = $1;
3853: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3854: my $namespace = 'rolelog';
3855: my %storehash = (
3856: role => $trole,
3857: start => $tstart,
3858: end => $tend,
3859: context => $context,
3860: );
3861: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3862: $domain,$domconfiguser,$cdom);
3863: }
3864: return;
3865:
3866: }
3867:
3868: sub coauthorrolelog {
3869: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3870: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3871: my $audom = $1;
3872: my $auname = $2;
3873: my $namespace = 'rolelog';
3874: my %storehash = (
3875: role => $trole,
3876: start => $tstart,
3877: end => $tend,
3878: context => $context,
3879: );
3880: &write_log('author',$namespace,\%storehash,$delflag,$username,
3881: $domain,$auname,$audom);
3882: }
3883: return;
3884: }
3885:
3886: sub get_course_adv_roles {
3887: my ($cid,$codes) = @_;
3888: $cid=$env{'request.course.id'} unless (defined($cid));
3889: my %coursehash=&coursedescription($cid);
3890: my $crstype = &Apache::loncommon::course_type($cid);
3891: my %nothide=();
3892: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3893: if ($user !~ /:/) {
3894: $nothide{join(':',split(/[\@]/,$user))}=1;
3895: } else {
3896: $nothide{$user}=1;
3897: }
3898: }
3899: my @possdoms = ($coursehash{'domain'});
3900: if ($coursehash{'checkforpriv'}) {
3901: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3902: }
3903: my %returnhash=();
3904: my %dumphash=
3905: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3906: my $now=time;
3907: my %privileged;
3908: foreach my $entry (keys(%dumphash)) {
3909: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3910: if (($tstart) && ($tstart<0)) { next; }
3911: if (($tend) && ($tend<$now)) { next; }
3912: if (($tstart) && ($now<$tstart)) { next; }
3913: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3914: if ($username eq '' || $domain eq '') { next; }
3915: if ((&privileged($username,$domain,\@possdoms)) &&
3916: (!$nothide{$username.':'.$domain})) { next; }
3917: if ($role eq 'cr') { next; }
3918: if ($codes) {
3919: if ($section) { $role .= ':'.$section; }
3920: if ($returnhash{$role}) {
3921: $returnhash{$role}.=','.$username.':'.$domain;
3922: } else {
3923: $returnhash{$role}=$username.':'.$domain;
3924: }
3925: } else {
3926: my $key=&plaintext($role,$crstype);
3927: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3928: if ($returnhash{$key}) {
3929: $returnhash{$key}.=','.$username.':'.$domain;
3930: } else {
3931: $returnhash{$key}=$username.':'.$domain;
3932: }
3933: }
3934: }
3935: return %returnhash;
3936: }
3937:
3938: sub get_my_roles {
3939: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3940: unless (defined($uname)) { $uname=$env{'user.name'}; }
3941: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3942: my (%dumphash,%nothide);
3943: if ($context eq 'userroles') {
3944: %dumphash = &dump('roles',$udom,$uname);
3945: } else {
3946: %dumphash = &dump('nohist_userroles',$udom,$uname);
3947: if ($hidepriv) {
3948: my %coursehash=&coursedescription($udom.'_'.$uname);
3949: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3950: if ($user !~ /:/) {
3951: $nothide{join(':',split(/[\@]/,$user))} = 1;
3952: } else {
3953: $nothide{$user} = 1;
3954: }
3955: }
3956: }
3957: }
3958: my %returnhash=();
3959: my $now=time;
3960: my %privileged;
3961: foreach my $entry (keys(%dumphash)) {
3962: my ($role,$tend,$tstart);
3963: if ($context eq 'userroles') {
3964: next if ($entry =~ /^rolesdef/);
3965: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3966: } else {
3967: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3968: }
3969: if (($tstart) && ($tstart<0)) { next; }
3970: my $status = 'active';
3971: if (($tend) && ($tend<=$now)) {
3972: $status = 'previous';
3973: }
3974: if (($tstart) && ($now<$tstart)) {
3975: $status = 'future';
3976: }
3977: if (ref($types) eq 'ARRAY') {
3978: if (!grep(/^\Q$status\E$/,@{$types})) {
3979: next;
3980: }
3981: } else {
3982: if ($status ne 'active') {
3983: next;
3984: }
3985: }
3986: my ($rolecode,$username,$domain,$section,$area);
3987: if ($context eq 'userroles') {
3988: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
3989: (undef,$domain,$username,$section) = split(/\//,$area);
3990: } else {
3991: ($role,$username,$domain,$section) = split(/\:/,$entry);
3992: }
3993: if (ref($roledoms) eq 'ARRAY') {
3994: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3995: next;
3996: }
3997: }
3998: if (ref($roles) eq 'ARRAY') {
3999: if (!grep(/^\Q$role\E$/,@{$roles})) {
4000: if ($role =~ /^cr\//) {
4001: if (!grep(/^cr$/,@{$roles})) {
4002: next;
4003: }
4004: } elsif ($role =~ /^gr\//) {
4005: if (!grep(/^gr$/,@{$roles})) {
4006: next;
4007: }
4008: } else {
4009: next;
4010: }
4011: }
4012: }
4013: if ($hidepriv) {
4014: my @privroles = ('dc','su');
4015: if ($context eq 'userroles') {
4016: next if (grep(/^\Q$role\E$/,@privroles));
4017: } else {
4018: my $possdoms = [$domain];
4019: if (ref($roledoms) eq 'ARRAY') {
4020: push(@{$possdoms},@{$roledoms});
4021: }
4022: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4023: if (!$nothide{$username.':'.$domain}) {
4024: next;
4025: }
4026: }
4027: }
4028: }
4029: if ($withsec) {
4030: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4031: $tstart.':'.$tend;
4032: } else {
4033: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4034: }
4035: }
4036: return %returnhash;
4037: }
4038:
4039: # ----------------------------------------------------- Frontpage Announcements
4040: #
4041: #
4042:
4043: sub postannounce {
4044: my ($server,$text)=@_;
4045: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4046: unless ($text=~/\w/) { $text=''; }
4047: return &reply('setannounce:'.&escape($text),$server);
4048: }
4049:
4050: sub getannounce {
4051:
4052: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4053: my $announcement='';
4054: while (my $line = <$fh>) { $announcement .= $line; }
4055: close($fh);
4056: if ($announcement=~/\w/) {
4057: return
4058: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4059: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4060: } else {
4061: return '';
4062: }
4063: } else {
4064: return '';
4065: }
4066: }
4067:
4068: # ---------------------------------------------------------- Course ID routines
4069: # Deal with domain's nohist_courseid.db files
4070: #
4071:
4072: sub courseidput {
4073: my ($domain,$storehash,$coursehome,$caller) = @_;
4074: return unless (ref($storehash) eq 'HASH');
4075: my $outcome;
4076: if ($caller eq 'timeonly') {
4077: my $cids = '';
4078: foreach my $item (keys(%$storehash)) {
4079: $cids.=&escape($item).'&';
4080: }
4081: $cids=~s/\&$//;
4082: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4083: $coursehome);
4084: } else {
4085: my $items = '';
4086: foreach my $item (keys(%$storehash)) {
4087: $items.= &escape($item).'='.
4088: &freeze_escape($$storehash{$item}).'&';
4089: }
4090: $items=~s/\&$//;
4091: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4092: $coursehome);
4093: }
4094: if ($outcome eq 'unknown_cmd') {
4095: my $what;
4096: foreach my $cid (keys(%$storehash)) {
4097: $what .= &escape($cid).'=';
4098: foreach my $item ('description','inst_code','owner','type') {
4099: $what .= &escape($storehash->{$cid}{$item}).':';
4100: }
4101: $what =~ s/\:$/&/;
4102: }
4103: $what =~ s/\&$//;
4104: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4105: } else {
4106: return $outcome;
4107: }
4108: }
4109:
4110: sub courseiddump {
4111: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4112: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4113: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4114: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
4115: my $as_hash = 1;
4116: my %returnhash;
4117: if (!$domfilter) { $domfilter=''; }
4118: my %libserv = &all_library();
4119: foreach my $tryserver (keys(%libserv)) {
4120: if ( ( $hostidflag == 1
4121: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4122: || (!defined($hostidflag)) ) {
4123:
4124: if (($domfilter eq '') ||
4125: (&host_domain($tryserver) eq $domfilter)) {
4126: my $rep;
4127: if (grep { $_ eq $tryserver } current_machine_ids()) {
4128: $rep = LONCAPA::Lond::dump_course_id_handler(
4129: join(":", (&host_domain($tryserver), $sincefilter,
4130: &escape($descfilter), &escape($instcodefilter),
4131: &escape($ownerfilter), &escape($coursefilter),
4132: &escape($typefilter), &escape($regexp_ok),
4133: $as_hash, &escape($selfenrollonly),
4134: &escape($catfilter), $showhidden, $caller,
4135: &escape($cloner), &escape($cc_clone), $cloneonly,
4136: &escape($createdbefore), &escape($createdafter),
4137: &escape($creationcontext), $domcloner)));
4138: } else {
4139: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4140: $sincefilter.':'.&escape($descfilter).':'.
4141: &escape($instcodefilter).':'.&escape($ownerfilter).
4142: ':'.&escape($coursefilter).':'.&escape($typefilter).
4143: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4144: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4145: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4146: &escape($cc_clone).':'.$cloneonly.':'.
4147: &escape($createdbefore).':'.&escape($createdafter).':'.
4148: &escape($creationcontext).':'.$domcloner,
4149: $tryserver);
4150: }
4151:
4152: my @pairs=split(/\&/,$rep);
4153: foreach my $item (@pairs) {
4154: my ($key,$value)=split(/\=/,$item,2);
4155: $key = &unescape($key);
4156: next if ($key =~ /^error: 2 /);
4157: my $result = &thaw_unescape($value);
4158: if (ref($result) eq 'HASH') {
4159: $returnhash{$key}=$result;
4160: } else {
4161: my @responses = split(/:/,$value);
4162: my @items = ('description','inst_code','owner','type');
4163: for (my $i=0; $i<@responses; $i++) {
4164: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4165: }
4166: }
4167: }
4168: }
4169: }
4170: }
4171: return %returnhash;
4172: }
4173:
4174: sub courselastaccess {
4175: my ($cdom,$cnum,$hostidref) = @_;
4176: my %returnhash;
4177: if ($cdom && $cnum) {
4178: my $chome = &homeserver($cnum,$cdom);
4179: if ($chome ne 'no_host') {
4180: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4181: &extract_lastaccess(\%returnhash,$rep);
4182: }
4183: } else {
4184: if (!$cdom) { $cdom=''; }
4185: my %libserv = &all_library();
4186: foreach my $tryserver (keys(%libserv)) {
4187: if (ref($hostidref) eq 'ARRAY') {
4188: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4189: }
4190: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4191: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4192: &extract_lastaccess(\%returnhash,$rep);
4193: }
4194: }
4195: }
4196: return %returnhash;
4197: }
4198:
4199: sub extract_lastaccess {
4200: my ($returnhash,$rep) = @_;
4201: if (ref($returnhash) eq 'HASH') {
4202: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4203: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4204: $rep eq '') {
4205: my @pairs=split(/\&/,$rep);
4206: foreach my $item (@pairs) {
4207: my ($key,$value)=split(/\=/,$item,2);
4208: $key = &unescape($key);
4209: next if ($key =~ /^error: 2 /);
4210: $returnhash->{$key} = &thaw_unescape($value);
4211: }
4212: }
4213: }
4214: return;
4215: }
4216:
4217: # ---------------------------------------------------------- DC e-mail
4218:
4219: sub dcmailput {
4220: my ($domain,$msgid,$message,$server)=@_;
4221: my $status = &Apache::lonnet::critical(
4222: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4223: &escape($message),$server);
4224: return $status;
4225: }
4226:
4227: sub dcmaildump {
4228: my ($dom,$startdate,$enddate,$senders) = @_;
4229: my %returnhash=();
4230:
4231: if (defined(&domain($dom,'primary'))) {
4232: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4233: &escape($enddate).':';
4234: my @esc_senders=map { &escape($_)} @$senders;
4235: $cmd.=&escape(join('&',@esc_senders));
4236: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4237: my ($key,$value) = split(/\=/,$line,2);
4238: if (($key) && ($value)) {
4239: $returnhash{&unescape($key)} = &unescape($value);
4240: }
4241: }
4242: }
4243: return %returnhash;
4244: }
4245: # ---------------------------------------------------------- Domain roles
4246:
4247: sub get_domain_roles {
4248: my ($dom,$roles,$startdate,$enddate)=@_;
4249: if ((!defined($startdate)) || ($startdate eq '')) {
4250: $startdate = '.';
4251: }
4252: if ((!defined($enddate)) || ($enddate eq '')) {
4253: $enddate = '.';
4254: }
4255: my $rolelist;
4256: if (ref($roles) eq 'ARRAY') {
4257: $rolelist = join('&',@{$roles});
4258: }
4259: my %personnel = ();
4260:
4261: my %servers = &get_servers($dom,'library');
4262: foreach my $tryserver (keys(%servers)) {
4263: %{$personnel{$tryserver}}=();
4264: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4265: &escape($startdate).':'.
4266: &escape($enddate).':'.
4267: &escape($rolelist), $tryserver))) {
4268: my ($key,$value) = split(/\=/,$line,2);
4269: if (($key) && ($value)) {
4270: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4271: }
4272: }
4273: }
4274: return %personnel;
4275: }
4276:
4277: # ----------------------------------------------------------- Interval timing
4278:
4279: {
4280: # Caches needed for speedup of navmaps
4281: # We don't want to cache this for very long at all (5 seconds at most)
4282: #
4283: # The user for whom we cache
4284: my $cachedkey='';
4285: # The cached times for this user
4286: my %cachedtimes=();
4287: # When this was last done
4288: my $cachedtime=();
4289:
4290: sub load_all_first_access {
4291: my ($uname,$udom)=@_;
4292: if (($cachedkey eq $uname.':'.$udom) &&
4293: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4294: return;
4295: }
4296: $cachedtime=time;
4297: $cachedkey=$uname.':'.$udom;
4298: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4299: }
4300:
4301: sub get_first_access {
4302: my ($type,$argsymb,$argmap)=@_;
4303: my ($symb,$courseid,$udom,$uname)=&whichuser();
4304: if ($argsymb) { $symb=$argsymb; }
4305: my ($map,$id,$res)=&decode_symb($symb);
4306: if ($argmap) { $map = $argmap; }
4307: if ($type eq 'course') {
4308: $res='course';
4309: } elsif ($type eq 'map') {
4310: $res=&symbread($map);
4311: } else {
4312: $res=$symb;
4313: }
4314: &load_all_first_access($uname,$udom);
4315: return $cachedtimes{"$courseid\0$res"};
4316: }
4317:
4318: sub set_first_access {
4319: my ($type,$interval)=@_;
4320: my ($symb,$courseid,$udom,$uname)=&whichuser();
4321: my ($map,$id,$res)=&decode_symb($symb);
4322: if ($type eq 'course') {
4323: $res='course';
4324: } elsif ($type eq 'map') {
4325: $res=&symbread($map);
4326: } else {
4327: $res=$symb;
4328: }
4329: $cachedkey='';
4330: my $firstaccess=&get_first_access($type,$symb,$map);
4331: if (!$firstaccess) {
4332: my $start = time;
4333: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4334: $udom,$uname);
4335: if ($putres eq 'ok') {
4336: &put('timerinterval',{"$courseid\0$res"=>$interval},
4337: $udom,$uname);
4338: &appenv(
4339: {
4340: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4341: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4342: }
4343: );
4344: }
4345: return $putres;
4346: }
4347: return 'already_set';
4348: }
4349: }
4350: # --------------------------------------------- Set Expire Date for Spreadsheet
4351:
4352: sub expirespread {
4353: my ($uname,$udom,$stype,$usymb)=@_;
4354: my $cid=$env{'request.course.id'};
4355: if ($cid) {
4356: my $now=time;
4357: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4358: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4359: $env{'course.'.$cid.'.num'}.
4360: ':nohist_expirationdates:'.
4361: &escape($key).'='.$now,
4362: $env{'course.'.$cid.'.home'})
4363: }
4364: return 'ok';
4365: }
4366:
4367: # ----------------------------------------------------- Devalidate Spreadsheets
4368:
4369: sub devalidate {
4370: my ($symb,$uname,$udom)=@_;
4371: my $cid=$env{'request.course.id'};
4372: if ($cid) {
4373: # delete the stored spreadsheets for
4374: # - the student level sheet of this user in course's homespace
4375: # - the assessment level sheet for this resource
4376: # for this user in user's homespace
4377: # - current conditional state info
4378: my $key=$uname.':'.$udom.':';
4379: my $status=
4380: &del('nohist_calculatedsheets',
4381: [$key.'studentcalc:'],
4382: $env{'course.'.$cid.'.domain'},
4383: $env{'course.'.$cid.'.num'})
4384: .' '.
4385: &del('nohist_calculatedsheets_'.$cid,
4386: [$key.'assesscalc:'.$symb],$udom,$uname);
4387: unless ($status eq 'ok ok') {
4388: &logthis('Could not devalidate spreadsheet '.
4389: $uname.' at '.$udom.' for '.
4390: $symb.': '.$status);
4391: }
4392: &delenv('user.state.'.$cid);
4393: }
4394: }
4395:
4396: sub get_scalar {
4397: my ($string,$end) = @_;
4398: my $value;
4399: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4400: $value = $1;
4401: } elsif ($$string =~ s/^([^&]*?)&//) {
4402: $value = $1;
4403: }
4404: return &unescape($value);
4405: }
4406:
4407: sub array2str {
4408: my (@array) = @_;
4409: my $result=&arrayref2str(\@array);
4410: $result=~s/^__ARRAY_REF__//;
4411: $result=~s/__END_ARRAY_REF__$//;
4412: return $result;
4413: }
4414:
4415: sub arrayref2str {
4416: my ($arrayref) = @_;
4417: my $result='__ARRAY_REF__';
4418: foreach my $elem (@$arrayref) {
4419: if(ref($elem) eq 'ARRAY') {
4420: $result.=&arrayref2str($elem).'&';
4421: } elsif(ref($elem) eq 'HASH') {
4422: $result.=&hashref2str($elem).'&';
4423: } elsif(ref($elem)) {
4424: #print("Got a ref of ".(ref($elem))." skipping.");
4425: } else {
4426: $result.=&escape($elem).'&';
4427: }
4428: }
4429: $result=~s/\&$//;
4430: $result .= '__END_ARRAY_REF__';
4431: return $result;
4432: }
4433:
4434: sub hash2str {
4435: my (%hash) = @_;
4436: my $result=&hashref2str(\%hash);
4437: $result=~s/^__HASH_REF__//;
4438: $result=~s/__END_HASH_REF__$//;
4439: return $result;
4440: }
4441:
4442: sub hashref2str {
4443: my ($hashref)=@_;
4444: my $result='__HASH_REF__';
4445: foreach my $key (sort(keys(%$hashref))) {
4446: if (ref($key) eq 'ARRAY') {
4447: $result.=&arrayref2str($key).'=';
4448: } elsif (ref($key) eq 'HASH') {
4449: $result.=&hashref2str($key).'=';
4450: } elsif (ref($key)) {
4451: $result.='=';
4452: #print("Got a ref of ".(ref($key))." skipping.");
4453: } else {
4454: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4455: }
4456:
4457: if(ref($hashref->{$key}) eq 'ARRAY') {
4458: $result.=&arrayref2str($hashref->{$key}).'&';
4459: } elsif(ref($hashref->{$key}) eq 'HASH') {
4460: $result.=&hashref2str($hashref->{$key}).'&';
4461: } elsif(ref($hashref->{$key})) {
4462: $result.='&';
4463: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4464: } else {
4465: $result.=&escape($hashref->{$key}).'&';
4466: }
4467: }
4468: $result=~s/\&$//;
4469: $result .= '__END_HASH_REF__';
4470: return $result;
4471: }
4472:
4473: sub str2hash {
4474: my ($string)=@_;
4475: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4476: return %$hash;
4477: }
4478:
4479: sub str2hashref {
4480: my ($string) = @_;
4481:
4482: my %hash;
4483:
4484: if($string !~ /^__HASH_REF__/) {
4485: if (! ($string eq '' || !defined($string))) {
4486: $hash{'error'}='Not hash reference';
4487: }
4488: return (\%hash, $string);
4489: }
4490:
4491: $string =~ s/^__HASH_REF__//;
4492:
4493: while($string !~ /^__END_HASH_REF__/) {
4494: #key
4495: my $key='';
4496: if($string =~ /^__HASH_REF__/) {
4497: ($key, $string)=&str2hashref($string);
4498: if(defined($key->{'error'})) {
4499: $hash{'error'}='Bad data';
4500: return (\%hash, $string);
4501: }
4502: } elsif($string =~ /^__ARRAY_REF__/) {
4503: ($key, $string)=&str2arrayref($string);
4504: if($key->[0] eq 'Array reference error') {
4505: $hash{'error'}='Bad data';
4506: return (\%hash, $string);
4507: }
4508: } else {
4509: $string =~ s/^(.*?)=//;
4510: $key=&unescape($1);
4511: }
4512: $string =~ s/^=//;
4513:
4514: #value
4515: my $value='';
4516: if($string =~ /^__HASH_REF__/) {
4517: ($value, $string)=&str2hashref($string);
4518: if(defined($value->{'error'})) {
4519: $hash{'error'}='Bad data';
4520: return (\%hash, $string);
4521: }
4522: } elsif($string =~ /^__ARRAY_REF__/) {
4523: ($value, $string)=&str2arrayref($string);
4524: if($value->[0] eq 'Array reference error') {
4525: $hash{'error'}='Bad data';
4526: return (\%hash, $string);
4527: }
4528: } else {
4529: $value=&get_scalar(\$string,'__END_HASH_REF__');
4530: }
4531: $string =~ s/^&//;
4532:
4533: $hash{$key}=$value;
4534: }
4535:
4536: $string =~ s/^__END_HASH_REF__//;
4537:
4538: return (\%hash, $string);
4539: }
4540:
4541: sub str2array {
4542: my ($string)=@_;
4543: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4544: return @$array;
4545: }
4546:
4547: sub str2arrayref {
4548: my ($string) = @_;
4549: my @array;
4550:
4551: if($string !~ /^__ARRAY_REF__/) {
4552: if (! ($string eq '' || !defined($string))) {
4553: $array[0]='Array reference error';
4554: }
4555: return (\@array, $string);
4556: }
4557:
4558: $string =~ s/^__ARRAY_REF__//;
4559:
4560: while($string !~ /^__END_ARRAY_REF__/) {
4561: my $value='';
4562: if($string =~ /^__HASH_REF__/) {
4563: ($value, $string)=&str2hashref($string);
4564: if(defined($value->{'error'})) {
4565: $array[0] ='Array reference error';
4566: return (\@array, $string);
4567: }
4568: } elsif($string =~ /^__ARRAY_REF__/) {
4569: ($value, $string)=&str2arrayref($string);
4570: if($value->[0] eq 'Array reference error') {
4571: $array[0] ='Array reference error';
4572: return (\@array, $string);
4573: }
4574: } else {
4575: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4576: }
4577: $string =~ s/^&//;
4578:
4579: push(@array, $value);
4580: }
4581:
4582: $string =~ s/^__END_ARRAY_REF__//;
4583:
4584: return (\@array, $string);
4585: }
4586:
4587: # -------------------------------------------------------------------Temp Store
4588:
4589: sub tmpreset {
4590: my ($symb,$namespace,$domain,$stuname) = @_;
4591: if (!$symb) {
4592: $symb=&symbread();
4593: if (!$symb) { $symb= $env{'request.url'}; }
4594: }
4595: $symb=escape($symb);
4596:
4597: if (!$namespace) { $namespace=$env{'request.state'}; }
4598: $namespace=~s/\//\_/g;
4599: $namespace=~s/\W//g;
4600:
4601: if (!$domain) { $domain=$env{'user.domain'}; }
4602: if (!$stuname) { $stuname=$env{'user.name'}; }
4603: if ($domain eq 'public' && $stuname eq 'public') {
4604: $stuname=$ENV{'REMOTE_ADDR'};
4605: }
4606: my $path=LONCAPA::tempdir();
4607: my %hash;
4608: if (tie(%hash,'GDBM_File',
4609: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4610: &GDBM_WRCREAT(),0640)) {
4611: foreach my $key (keys(%hash)) {
4612: if ($key=~ /:$symb/) {
4613: delete($hash{$key});
4614: }
4615: }
4616: }
4617: }
4618:
4619: sub tmpstore {
4620: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4621:
4622: if (!$symb) {
4623: $symb=&symbread();
4624: if (!$symb) { $symb= $env{'request.url'}; }
4625: }
4626: $symb=escape($symb);
4627:
4628: if (!$namespace) {
4629: # I don't think we would ever want to store this for a course.
4630: # it seems this will only be used if we don't have a course.
4631: #$namespace=$env{'request.course.id'};
4632: #if (!$namespace) {
4633: $namespace=$env{'request.state'};
4634: #}
4635: }
4636: $namespace=~s/\//\_/g;
4637: $namespace=~s/\W//g;
4638: if (!$domain) { $domain=$env{'user.domain'}; }
4639: if (!$stuname) { $stuname=$env{'user.name'}; }
4640: if ($domain eq 'public' && $stuname eq 'public') {
4641: $stuname=$ENV{'REMOTE_ADDR'};
4642: }
4643: my $now=time;
4644: my %hash;
4645: my $path=LONCAPA::tempdir();
4646: if (tie(%hash,'GDBM_File',
4647: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4648: &GDBM_WRCREAT(),0640)) {
4649: $hash{"version:$symb"}++;
4650: my $version=$hash{"version:$symb"};
4651: my $allkeys='';
4652: foreach my $key (keys(%$storehash)) {
4653: $allkeys.=$key.':';
4654: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4655: }
4656: $hash{"$version:$symb:timestamp"}=$now;
4657: $allkeys.='timestamp';
4658: $hash{"$version:keys:$symb"}=$allkeys;
4659: if (untie(%hash)) {
4660: return 'ok';
4661: } else {
4662: return "error:$!";
4663: }
4664: } else {
4665: return "error:$!";
4666: }
4667: }
4668:
4669: # -----------------------------------------------------------------Temp Restore
4670:
4671: sub tmprestore {
4672: my ($symb,$namespace,$domain,$stuname) = @_;
4673:
4674: if (!$symb) {
4675: $symb=&symbread();
4676: if (!$symb) { $symb= $env{'request.url'}; }
4677: }
4678: $symb=escape($symb);
4679:
4680: if (!$namespace) { $namespace=$env{'request.state'}; }
4681:
4682: if (!$domain) { $domain=$env{'user.domain'}; }
4683: if (!$stuname) { $stuname=$env{'user.name'}; }
4684: if ($domain eq 'public' && $stuname eq 'public') {
4685: $stuname=$ENV{'REMOTE_ADDR'};
4686: }
4687: my %returnhash;
4688: $namespace=~s/\//\_/g;
4689: $namespace=~s/\W//g;
4690: my %hash;
4691: my $path=LONCAPA::tempdir();
4692: if (tie(%hash,'GDBM_File',
4693: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4694: &GDBM_READER(),0640)) {
4695: my $version=$hash{"version:$symb"};
4696: $returnhash{'version'}=$version;
4697: my $scope;
4698: for ($scope=1;$scope<=$version;$scope++) {
4699: my $vkeys=$hash{"$scope:keys:$symb"};
4700: my @keys=split(/:/,$vkeys);
4701: my $key;
4702: $returnhash{"$scope:keys"}=$vkeys;
4703: foreach $key (@keys) {
4704: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4705: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4706: }
4707: }
4708: if (!(untie(%hash))) {
4709: return "error:$!";
4710: }
4711: } else {
4712: return "error:$!";
4713: }
4714: return %returnhash;
4715: }
4716:
4717: # ----------------------------------------------------------------------- Store
4718:
4719: sub store {
4720: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4721: my $home='';
4722:
4723: if ($stuname) { $home=&homeserver($stuname,$domain); }
4724:
4725: $symb=&symbclean($symb);
4726: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4727:
4728: if (!$domain) { $domain=$env{'user.domain'}; }
4729: if (!$stuname) { $stuname=$env{'user.name'}; }
4730:
4731: &devalidate($symb,$stuname,$domain);
4732:
4733: $symb=escape($symb);
4734: if (!$namespace) {
4735: unless ($namespace=$env{'request.course.id'}) {
4736: return '';
4737: }
4738: }
4739: if (!$home) { $home=$env{'user.home'}; }
4740:
4741: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4742: $$storehash{'host'}=$perlvar{'lonHostID'};
4743:
4744: my $namevalue='';
4745: foreach my $key (keys(%$storehash)) {
4746: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4747: }
4748: $namevalue=~s/\&$//;
4749: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4750: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4751: }
4752:
4753: # -------------------------------------------------------------- Critical Store
4754:
4755: sub cstore {
4756: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4757: my $home='';
4758:
4759: if ($stuname) { $home=&homeserver($stuname,$domain); }
4760:
4761: $symb=&symbclean($symb);
4762: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4763:
4764: if (!$domain) { $domain=$env{'user.domain'}; }
4765: if (!$stuname) { $stuname=$env{'user.name'}; }
4766:
4767: &devalidate($symb,$stuname,$domain);
4768:
4769: $symb=escape($symb);
4770: if (!$namespace) {
4771: unless ($namespace=$env{'request.course.id'}) {
4772: return '';
4773: }
4774: }
4775: if (!$home) { $home=$env{'user.home'}; }
4776:
4777: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4778: $$storehash{'host'}=$perlvar{'lonHostID'};
4779:
4780: my $namevalue='';
4781: foreach my $key (keys(%$storehash)) {
4782: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4783: }
4784: $namevalue=~s/\&$//;
4785: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4786: return critical
4787: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4788: }
4789:
4790: # --------------------------------------------------------------------- Restore
4791:
4792: sub restore {
4793: my ($symb,$namespace,$domain,$stuname) = @_;
4794: my $home='';
4795:
4796: if ($stuname) { $home=&homeserver($stuname,$domain); }
4797:
4798: if (!$symb) {
4799: unless ($symb=escape(&symbread())) { return ''; }
4800: } else {
4801: $symb=&escape(&symbclean($symb));
4802: }
4803: if (!$namespace) {
4804: unless ($namespace=$env{'request.course.id'}) {
4805: return '';
4806: }
4807: }
4808: if (!$domain) { $domain=$env{'user.domain'}; }
4809: if (!$stuname) { $stuname=$env{'user.name'}; }
4810: if (!$home) { $home=$env{'user.home'}; }
4811: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4812:
4813: my %returnhash=();
4814: foreach my $line (split(/\&/,$answer)) {
4815: my ($name,$value)=split(/\=/,$line);
4816: $returnhash{&unescape($name)}=&thaw_unescape($value);
4817: }
4818: my $version;
4819: for ($version=1;$version<=$returnhash{'version'};$version++) {
4820: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4821: $returnhash{$item}=$returnhash{$version.':'.$item};
4822: }
4823: }
4824: return %returnhash;
4825: }
4826:
4827: # ---------------------------------------------------------- Course Description
4828: #
4829: #
4830:
4831: sub coursedescription {
4832: my ($courseid,$args)=@_;
4833: $courseid=~s/^\///;
4834: $courseid=~s/\_/\//g;
4835: my ($cdomain,$cnum)=split(/\//,$courseid);
4836: my $chome=&homeserver($cnum,$cdomain);
4837: my $normalid=$cdomain.'_'.$cnum;
4838: # need to always cache even if we get errors otherwise we keep
4839: # trying and trying and trying to get the course description.
4840: my %envhash=();
4841: my %returnhash=();
4842:
4843: my $expiretime=600;
4844: if ($env{'request.course.id'} eq $normalid) {
4845: $expiretime=120;
4846: }
4847:
4848: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4849: if (!$args->{'freshen_cache'}
4850: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4851: foreach my $key (keys(%env)) {
4852: next if ($key !~ /^\Q$prefix\E(.*)/);
4853: my ($setting) = $1;
4854: $returnhash{$setting} = $env{$key};
4855: }
4856: return %returnhash;
4857: }
4858:
4859: # get the data again
4860:
4861: if (!$args->{'one_time'}) {
4862: $envhash{'course.'.$normalid.'.last_cache'}=time;
4863: }
4864:
4865: if ($chome ne 'no_host') {
4866: %returnhash=&dump('environment',$cdomain,$cnum);
4867: if (!exists($returnhash{'con_lost'})) {
4868: my $username = $env{'user.name'}; # Defult username
4869: if(defined $args->{'user'}) {
4870: $username = $args->{'user'};
4871: }
4872: $returnhash{'home'}= $chome;
4873: $returnhash{'domain'} = $cdomain;
4874: $returnhash{'num'} = $cnum;
4875: if (!defined($returnhash{'type'})) {
4876: $returnhash{'type'} = 'Course';
4877: }
4878: while (my ($name,$value) = each %returnhash) {
4879: $envhash{'course.'.$normalid.'.'.$name}=$value;
4880: }
4881: $returnhash{'url'}=&clutter($returnhash{'url'});
4882: $returnhash{'fn'}=LONCAPA::tempdir() .
4883: $username.'_'.$cdomain.'_'.$cnum;
4884: $envhash{'course.'.$normalid.'.home'}=$chome;
4885: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4886: $envhash{'course.'.$normalid.'.num'}=$cnum;
4887: }
4888: }
4889: if (!$args->{'one_time'}) {
4890: &appenv(\%envhash);
4891: }
4892: return %returnhash;
4893: }
4894:
4895: sub update_released_required {
4896: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4897: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4898: $cid = $env{'request.course.id'};
4899: $cdom = $env{'course.'.$cid.'.domain'};
4900: $cnum = $env{'course.'.$cid.'.num'};
4901: $chome = $env{'course.'.$cid.'.home'};
4902: }
4903: if ($needsrelease) {
4904: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4905: my $needsupdate;
4906: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4907: $needsupdate = 1;
4908: } else {
4909: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4910: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4911: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4912: $needsupdate = 1;
4913: }
4914: }
4915: if ($needsupdate) {
4916: my %needshash = (
4917: 'internal.releaserequired' => $needsrelease,
4918: );
4919: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4920: if ($putresult eq 'ok') {
4921: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4922: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4923: if (ref($crsinfo{$cid}) eq 'HASH') {
4924: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4925: &courseidput($cdom,\%crsinfo,$chome,'notime');
4926: }
4927: }
4928: }
4929: }
4930: return;
4931: }
4932:
4933: # -------------------------------------------------See if a user is privileged
4934:
4935: sub privileged {
4936: my ($username,$domain,$possdomains,$possroles)=@_;
4937: my $now = time;
4938: my $roles;
4939: if (ref($possroles) eq 'ARRAY') {
4940: $roles = $possroles;
4941: } else {
4942: $roles = ['dc','su'];
4943: }
4944: if (ref($possdomains) eq 'ARRAY') {
4945: my %privileged = &privileged_by_domain($possdomains,$roles);
4946: foreach my $dom (@{$possdomains}) {
4947: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
4948: (ref($privileged{$dom}) eq 'HASH')) {
4949: foreach my $role (@{$roles}) {
4950: if (ref($privileged{$dom}{$role}) eq 'HASH') {
4951: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
4952: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
4953: return 1 unless (($end && $end < $now) ||
4954: ($start && $start > $now));
4955: }
4956: }
4957: }
4958: }
4959: }
4960: } else {
4961: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4962: my $now = time;
4963:
4964: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4965: my ($trole, $tend, $tstart) = split(/_/, $role);
4966: if (grep(/^\Q$trole\E$/,@{$roles})) {
4967: return 1 unless ($tend && $tend < $now)
4968: or ($tstart && $tstart > $now);
4969: }
4970: }
4971: }
4972: return 0;
4973: }
4974:
4975: sub privileged_by_domain {
4976: my ($domains,$roles) = @_;
4977: my %privileged = ();
4978: my $cachetime = 60*60*24;
4979: my $now = time;
4980: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
4981: return %privileged;
4982: }
4983: foreach my $dom (@{$domains}) {
4984: next if (ref($privileged{$dom}) eq 'HASH');
4985: my $needroles;
4986: foreach my $role (@{$roles}) {
4987: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
4988: if (defined($cached)) {
4989: if (ref($result) eq 'HASH') {
4990: $privileged{$dom}{$role} = $result;
4991: }
4992: } else {
4993: $needroles = 1;
4994: }
4995: }
4996: if ($needroles) {
4997: my %dompersonnel = &get_domain_roles($dom,$roles);
4998: $privileged{$dom} = {};
4999: foreach my $server (keys(%dompersonnel)) {
5000: if (ref($dompersonnel{$server}) eq 'HASH') {
5001: foreach my $item (keys(%{$dompersonnel{$server}})) {
5002: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5003: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5004: next if ($end && $end < $now);
5005: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5006: $dompersonnel{$server}{$item};
5007: }
5008: }
5009: }
5010: if (ref($privileged{$dom}) eq 'HASH') {
5011: foreach my $role (@{$roles}) {
5012: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5013: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5014: } else {
5015: my %hash = ();
5016: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5017: }
5018: }
5019: }
5020: }
5021: }
5022: return %privileged;
5023: }
5024:
5025: # -------------------------------------------------------- Get user privileges
5026:
5027: sub rolesinit {
5028: my ($domain, $username) = @_;
5029: my %userroles = ('user.login.time' => time);
5030: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5031:
5032: # firstaccess and timerinterval are related to timed maps/resources.
5033: # also, blocking can be triggered by an activating timer
5034: # it's saved in the user's %env.
5035: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5036: my %timerinterval = &dump('timerinterval', $domain, $username);
5037: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5038: %timerintchk, %timerintenv);
5039:
5040: foreach my $key (keys(%firstaccess)) {
5041: my ($cid, $rest) = split(/\0/, $key);
5042: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5043: }
5044:
5045: foreach my $key (keys(%timerinterval)) {
5046: my ($cid,$rest) = split(/\0/,$key);
5047: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5048: }
5049:
5050: my %allroles=();
5051: my %allgroups=();
5052:
5053: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
5054: my $role = $rolesdump{$area};
5055: $area =~ s/\_\w\w$//;
5056:
5057: my ($trole, $tend, $tstart, $group_privs);
5058:
5059: if ($role =~ /^cr/) {
5060: # Custom role, defined by a user
5061: # e.g., user.role.cr/msu/smith/mynewrole
5062: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5063: $trole = $1;
5064: ($tend, $tstart) = split('_', $2);
5065: } else {
5066: $trole = $role;
5067: }
5068: } elsif ($role =~ m|^gr/|) {
5069: # Role of member in a group, defined within a course/community
5070: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5071: ($trole, $tend, $tstart) = split(/_/, $role);
5072: next if $tstart eq '-1';
5073: ($trole, $group_privs) = split(/\//, $trole);
5074: $group_privs = &unescape($group_privs);
5075: } else {
5076: # Just a normal role, defined in roles.tab
5077: ($trole, $tend, $tstart) = split(/_/,$role);
5078: }
5079:
5080: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5081: $username);
5082: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5083:
5084: # role expired or not available yet?
5085: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5086: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5087:
5088: next if $area eq '' or $trole eq '';
5089:
5090: my $spec = "$trole.$area";
5091: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5092:
5093: if ($trole =~ /^cr\//) {
5094: # Custom role, defined by a user
5095: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5096: } elsif ($trole eq 'gr') {
5097: # Role of a member in a group, defined within a course/community
5098: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5099: next;
5100: } else {
5101: # Normal role, defined in roles.tab
5102: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5103: }
5104:
5105: my $cid = $tdomain.'_'.$trest;
5106: unless ($firstaccchk{$cid}) {
5107: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5108: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5109: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5110: $coursetimerstarts{$cid}{$item};
5111: }
5112: }
5113: $firstaccchk{$cid} = 1;
5114: }
5115: unless ($timerintchk{$cid}) {
5116: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5117: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5118: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5119: $coursetimerintervals{$cid}{$item};
5120: }
5121: }
5122: $timerintchk{$cid} = 1;
5123: }
5124: }
5125:
5126: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5127: \%allroles, \%allgroups);
5128: $env{'user.adv'} = $userroles{'user.adv'};
5129:
5130: return (\%userroles,\%firstaccenv,\%timerintenv);
5131: }
5132:
5133: sub set_arearole {
5134: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5135: unless ($nolog) {
5136: # log the associated role with the area
5137: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5138: }
5139: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5140: }
5141:
5142: sub custom_roleprivs {
5143: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5144: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5145: my $homsvr=homeserver($rauthor,$rdomain);
5146: if (&hostname($homsvr) ne '') {
5147: my ($rdummy,$roledef)=
5148: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5149: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5150: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5151: if (defined($syspriv)) {
5152: if ($trest =~ /^$match_community$/) {
5153: $syspriv =~ s/bre\&S//;
5154: }
5155: $$allroles{'cm./'}.=':'.$syspriv;
5156: $$allroles{$spec.'./'}.=':'.$syspriv;
5157: }
5158: if ($tdomain ne '') {
5159: if (defined($dompriv)) {
5160: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5161: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5162: }
5163: if (($trest ne '') && (defined($coursepriv))) {
5164: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5165: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5166: }
5167: }
5168: }
5169: }
5170: }
5171:
5172: sub group_roleprivs {
5173: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5174: my $access = 1;
5175: my $now = time;
5176: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5177: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5178: if ($access) {
5179: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5180: $$allgroups{$course}{$group} .=':'.$group_privs;
5181: }
5182: }
5183:
5184: sub standard_roleprivs {
5185: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5186: if (defined($pr{$trole.':s'})) {
5187: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5188: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5189: }
5190: if ($tdomain ne '') {
5191: if (defined($pr{$trole.':d'})) {
5192: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5193: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5194: }
5195: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5196: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5197: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5198: }
5199: }
5200: }
5201:
5202: sub set_userprivs {
5203: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5204: my $author=0;
5205: my $adv=0;
5206: my %grouproles = ();
5207: if (keys(%{$allgroups}) > 0) {
5208: my @groupkeys;
5209: foreach my $role (keys(%{$allroles})) {
5210: push(@groupkeys,$role);
5211: }
5212: if (ref($groups_roles) eq 'HASH') {
5213: foreach my $key (keys(%{$groups_roles})) {
5214: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5215: push(@groupkeys,$key);
5216: }
5217: }
5218: }
5219: if (@groupkeys > 0) {
5220: foreach my $role (@groupkeys) {
5221: my ($trole,$area,$sec,$extendedarea);
5222: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5223: $trole = $1;
5224: $area = $2;
5225: $sec = $3;
5226: $extendedarea = $area.$sec;
5227: if (exists($$allgroups{$area})) {
5228: foreach my $group (keys(%{$$allgroups{$area}})) {
5229: my $spec = $trole.'.'.$extendedarea;
5230: $grouproles{$spec.'.'.$area.'/'.$group} =
5231: $$allgroups{$area}{$group};
5232: }
5233: }
5234: }
5235: }
5236: }
5237: }
5238: foreach my $group (keys(%grouproles)) {
5239: $$allroles{$group} = $grouproles{$group};
5240: }
5241: foreach my $role (keys(%{$allroles})) {
5242: my %thesepriv;
5243: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5244: foreach my $item (split(/:/,$$allroles{$role})) {
5245: if ($item ne '') {
5246: my ($privilege,$restrictions)=split(/&/,$item);
5247: if ($restrictions eq '') {
5248: $thesepriv{$privilege}='F';
5249: } elsif ($thesepriv{$privilege} ne 'F') {
5250: $thesepriv{$privilege}.=$restrictions;
5251: }
5252: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5253: }
5254: }
5255: my $thesestr='';
5256: foreach my $priv (sort(keys(%thesepriv))) {
5257: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5258: }
5259: $userroles->{'user.priv.'.$role} = $thesestr;
5260: }
5261: return ($author,$adv);
5262: }
5263:
5264: sub role_status {
5265: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5266: my @pwhere = ();
5267: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5268: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5269: unless (!defined($$role) || $$role eq '') {
5270: $$where=join('.',@pwhere);
5271: $$trolecode=$$role.'.'.$$where;
5272: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5273: $$tstatus='is';
5274: if ($$tstart && $$tstart>$update) {
5275: $$tstatus='future';
5276: if ($$tstart<$now) {
5277: if ($$tstart && $$tstart>$refresh) {
5278: if (($$where ne '') && ($$role ne '')) {
5279: my (%allroles,%allgroups,$group_privs,
5280: %groups_roles,@rolecodes);
5281: my %userroles = (
5282: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5283: );
5284: @rolecodes = ('cm');
5285: my $spec=$$role.'.'.$$where;
5286: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5287: if ($$role =~ /^cr\//) {
5288: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5289: push(@rolecodes,'cr');
5290: } elsif ($$role eq 'gr') {
5291: push(@rolecodes,$$role);
5292: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5293: $env{'user.name'});
5294: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5295: (undef,my $group_privs) = split(/\//,$trole);
5296: $group_privs = &unescape($group_privs);
5297: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5298: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5299: &get_groups_roles($tdomain,$trest,
5300: \%course_roles,\@rolecodes,
5301: \%groups_roles);
5302: } else {
5303: push(@rolecodes,$$role);
5304: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5305: }
5306: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5307: &appenv(\%userroles,\@rolecodes);
5308: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5309: }
5310: }
5311: $$tstatus = 'is';
5312: }
5313: }
5314: if ($$tend) {
5315: if ($$tend<$update) {
5316: $$tstatus='expired';
5317: } elsif ($$tend<$now) {
5318: $$tstatus='will_not';
5319: }
5320: }
5321: }
5322: }
5323: }
5324:
5325: sub get_groups_roles {
5326: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5327: return unless((ref($cdom_courseroles) eq 'HASH') &&
5328: (ref($rolecodes) eq 'ARRAY') &&
5329: (ref($groups_roles) eq 'HASH'));
5330: if (keys(%{$cdom_courseroles}) > 0) {
5331: my ($cnum) = ($rest =~ /^($match_courseid)/);
5332: if ($cdom ne '' && $cnum ne '') {
5333: foreach my $key (keys(%{$cdom_courseroles})) {
5334: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5335: my $crsrole = $1;
5336: my $crssec = $2;
5337: if ($crsrole =~ /^cr/) {
5338: unless (grep(/^cr$/,@{$rolecodes})) {
5339: push(@{$rolecodes},'cr');
5340: }
5341: } else {
5342: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5343: push(@{$rolecodes},$crsrole);
5344: }
5345: }
5346: my $rolekey = "$crsrole./$cdom/$cnum";
5347: if ($crssec ne '') {
5348: $rolekey .= "/$crssec";
5349: }
5350: $rolekey .= './';
5351: $groups_roles->{$rolekey} = $rolecodes;
5352: }
5353: }
5354: }
5355: }
5356: return;
5357: }
5358:
5359: sub delete_env_groupprivs {
5360: my ($where,$courseroles,$possroles) = @_;
5361: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5362: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5363: unless (ref($courseroles->{$udom}) eq 'HASH') {
5364: %{$courseroles->{$udom}} =
5365: &get_my_roles('','','userroles',['active'],
5366: $possroles,[$udom],1);
5367: }
5368: if (ref($courseroles->{$udom}) eq 'HASH') {
5369: foreach my $item (keys(%{$courseroles->{$udom}})) {
5370: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5371: my $area = '/'.$cdom.'/'.$cnum;
5372: my $privkey = "user.priv.$crsrole.$area";
5373: if ($crssec ne '') {
5374: $privkey .= '/'.$crssec;
5375: }
5376: $privkey .= ".$area/$group";
5377: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5378: }
5379: }
5380: return;
5381: }
5382:
5383: sub check_adhoc_privs {
5384: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5385: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5386: my $setprivs;
5387: if ($env{$cckey}) {
5388: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5389: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5390: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5391: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5392: $setprivs = 1;
5393: }
5394: } else {
5395: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5396: $setprivs = 1;
5397: }
5398: return $setprivs;
5399: }
5400:
5401: sub set_adhoc_privileges {
5402: # role can be cc or ca
5403: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5404: my $area = '/'.$dcdom.'/'.$pickedcourse;
5405: my $spec = $role.'.'.$area;
5406: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5407: $env{'user.name'},1);
5408: my %ccrole = ();
5409: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5410: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5411: &appenv(\%userroles,[$role,'cm']);
5412: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5413: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5414: &appenv( {'request.role' => $spec,
5415: 'request.role.domain' => $dcdom,
5416: 'request.course.sec' => ''
5417: }
5418: );
5419: my $tadv=0;
5420: if (&allowed('adv') eq 'F') { $tadv=1; }
5421: &appenv({'request.role.adv' => $tadv});
5422: }
5423: }
5424:
5425: # --------------------------------------------------------------- get interface
5426:
5427: sub get {
5428: my ($namespace,$storearr,$udomain,$uname)=@_;
5429: my $items='';
5430: foreach my $item (@$storearr) {
5431: $items.=&escape($item).'&';
5432: }
5433: $items=~s/\&$//;
5434: if (!$udomain) { $udomain=$env{'user.domain'}; }
5435: if (!$uname) { $uname=$env{'user.name'}; }
5436: my $uhome=&homeserver($uname,$udomain);
5437:
5438: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5439: my @pairs=split(/\&/,$rep);
5440: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5441: return @pairs;
5442: }
5443: my %returnhash=();
5444: my $i=0;
5445: foreach my $item (@$storearr) {
5446: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5447: $i++;
5448: }
5449: return %returnhash;
5450: }
5451:
5452: # --------------------------------------------------------------- del interface
5453:
5454: sub del {
5455: my ($namespace,$storearr,$udomain,$uname)=@_;
5456: my $items='';
5457: foreach my $item (@$storearr) {
5458: $items.=&escape($item).'&';
5459: }
5460:
5461: $items=~s/\&$//;
5462: if (!$udomain) { $udomain=$env{'user.domain'}; }
5463: if (!$uname) { $uname=$env{'user.name'}; }
5464: my $uhome=&homeserver($uname,$udomain);
5465: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5466: }
5467:
5468: # -------------------------------------------------------------- dump interface
5469:
5470: sub unserialize {
5471: my ($rep, $escapedkeys) = @_;
5472:
5473: return {} if $rep =~ /^error/;
5474:
5475: my %returnhash=();
5476: foreach my $item (split /\&/, $rep) {
5477: my ($key, $value) = split(/=/, $item, 2);
5478: $key = unescape($key) unless $escapedkeys;
5479: next if $key =~ /^error: 2 /;
5480: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5481: }
5482: #return %returnhash;
5483: return \%returnhash;
5484: }
5485:
5486: # see Lond::dump_with_regexp
5487: # if $escapedkeys hash keys won't get unescaped.
5488: sub dump {
5489: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5490: if (!$udomain) { $udomain=$env{'user.domain'}; }
5491: if (!$uname) { $uname=$env{'user.name'}; }
5492: my $uhome=&homeserver($uname,$udomain);
5493:
5494: my $reply;
5495: if (grep { $_ eq $uhome } current_machine_ids()) {
5496: # user is hosted on this machine
5497: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5498: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5499: return %{unserialize($reply, $escapedkeys)};
5500: }
5501: if ($regexp) {
5502: $regexp=&escape($regexp);
5503: } else {
5504: $regexp='.';
5505: }
5506: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5507: my @pairs=split(/\&/,$rep);
5508: my %returnhash=();
5509: if (!($rep =~ /^error/ )) {
5510: foreach my $item (@pairs) {
5511: my ($key,$value)=split(/=/,$item,2);
5512: $key = unescape($key) unless $escapedkeys;
5513: #$key = &unescape($key);
5514: next if ($key =~ /^error: 2 /);
5515: $returnhash{$key}=&thaw_unescape($value);
5516: }
5517: }
5518: return %returnhash;
5519: }
5520:
5521:
5522: # --------------------------------------------------------- dumpstore interface
5523:
5524: sub dumpstore {
5525: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5526: # same as dump but keys must be escaped. They may contain colon separated
5527: # lists of values that may themself contain colons (e.g. symbs).
5528: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5529: }
5530:
5531: # -------------------------------------------------------------- keys interface
5532:
5533: sub getkeys {
5534: my ($namespace,$udomain,$uname)=@_;
5535: if (!$udomain) { $udomain=$env{'user.domain'}; }
5536: if (!$uname) { $uname=$env{'user.name'}; }
5537: my $uhome=&homeserver($uname,$udomain);
5538: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5539: my @keyarray=();
5540: foreach my $key (split(/\&/,$rep)) {
5541: next if ($key =~ /^error: 2 /);
5542: push(@keyarray,&unescape($key));
5543: }
5544: return @keyarray;
5545: }
5546:
5547: # --------------------------------------------------------------- currentdump
5548: sub currentdump {
5549: my ($courseid,$sdom,$sname)=@_;
5550: $courseid = $env{'request.course.id'} if (! defined($courseid));
5551: $sdom = $env{'user.domain'} if (! defined($sdom));
5552: $sname = $env{'user.name'} if (! defined($sname));
5553: my $uhome = &homeserver($sname,$sdom);
5554: my $rep;
5555:
5556: if (grep { $_ eq $uhome } current_machine_ids()) {
5557: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5558: $courseid)));
5559: } else {
5560: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5561: }
5562:
5563: return if ($rep =~ /^(error:|no_such_host)/);
5564: #
5565: my %returnhash=();
5566: #
5567: if ($rep eq "unknown_cmd") {
5568: # an old lond will not know currentdump
5569: # Do a dump and make it look like a currentdump
5570: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5571: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5572: my %hash = @tmp;
5573: @tmp=();
5574: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5575: } else {
5576: my @pairs=split(/\&/,$rep);
5577: foreach my $pair (@pairs) {
5578: my ($key,$value)=split(/=/,$pair,2);
5579: my ($symb,$param) = split(/:/,$key);
5580: $returnhash{&unescape($symb)}->{&unescape($param)} =
5581: &thaw_unescape($value);
5582: }
5583: }
5584: return %returnhash;
5585: }
5586:
5587: sub convert_dump_to_currentdump{
5588: my %hash = %{shift()};
5589: my %returnhash;
5590: # Code ripped from lond, essentially. The only difference
5591: # here is the unescaping done by lonnet::dump(). Conceivably
5592: # we might run in to problems with parameter names =~ /^v\./
5593: while (my ($key,$value) = each(%hash)) {
5594: my ($v,$symb,$param) = split(/:/,$key);
5595: $symb = &unescape($symb);
5596: $param = &unescape($param);
5597: next if ($v eq 'version' || $symb eq 'keys');
5598: next if (exists($returnhash{$symb}) &&
5599: exists($returnhash{$symb}->{$param}) &&
5600: $returnhash{$symb}->{'v.'.$param} > $v);
5601: $returnhash{$symb}->{$param}=$value;
5602: $returnhash{$symb}->{'v.'.$param}=$v;
5603: }
5604: #
5605: # Remove all of the keys in the hashes which keep track of
5606: # the version of the parameter.
5607: while (my ($symb,$param_hash) = each(%returnhash)) {
5608: # use a foreach because we are going to delete from the hash.
5609: foreach my $key (keys(%$param_hash)) {
5610: delete($param_hash->{$key}) if ($key =~ /^v\./);
5611: }
5612: }
5613: return \%returnhash;
5614: }
5615:
5616: # ------------------------------------------------------ critical inc interface
5617:
5618: sub cinc {
5619: return &inc(@_,'critical');
5620: }
5621:
5622: # --------------------------------------------------------------- inc interface
5623:
5624: sub inc {
5625: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5626: if (!$udomain) { $udomain=$env{'user.domain'}; }
5627: if (!$uname) { $uname=$env{'user.name'}; }
5628: my $uhome=&homeserver($uname,$udomain);
5629: my $items='';
5630: if (! ref($store)) {
5631: # got a single value, so use that instead
5632: $items = &escape($store).'=&';
5633: } elsif (ref($store) eq 'SCALAR') {
5634: $items = &escape($$store).'=&';
5635: } elsif (ref($store) eq 'ARRAY') {
5636: $items = join('=&',map {&escape($_);} @{$store});
5637: } elsif (ref($store) eq 'HASH') {
5638: while (my($key,$value) = each(%{$store})) {
5639: $items.= &escape($key).'='.&escape($value).'&';
5640: }
5641: }
5642: $items=~s/\&$//;
5643: if ($critical) {
5644: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5645: } else {
5646: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5647: }
5648: }
5649:
5650: # --------------------------------------------------------------- put interface
5651:
5652: sub put {
5653: my ($namespace,$storehash,$udomain,$uname)=@_;
5654: if (!$udomain) { $udomain=$env{'user.domain'}; }
5655: if (!$uname) { $uname=$env{'user.name'}; }
5656: my $uhome=&homeserver($uname,$udomain);
5657: my $items='';
5658: foreach my $item (keys(%$storehash)) {
5659: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5660: }
5661: $items=~s/\&$//;
5662: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5663: }
5664:
5665: # ------------------------------------------------------------ newput interface
5666:
5667: sub newput {
5668: my ($namespace,$storehash,$udomain,$uname)=@_;
5669: if (!$udomain) { $udomain=$env{'user.domain'}; }
5670: if (!$uname) { $uname=$env{'user.name'}; }
5671: my $uhome=&homeserver($uname,$udomain);
5672: my $items='';
5673: foreach my $key (keys(%$storehash)) {
5674: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5675: }
5676: $items=~s/\&$//;
5677: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5678: }
5679:
5680: # --------------------------------------------------------- putstore interface
5681:
5682: sub putstore {
5683: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5684: if (!$udomain) { $udomain=$env{'user.domain'}; }
5685: if (!$uname) { $uname=$env{'user.name'}; }
5686: my $uhome=&homeserver($uname,$udomain);
5687: my $items='';
5688: foreach my $key (keys(%$storehash)) {
5689: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5690: }
5691: $items=~s/\&$//;
5692: my $esc_symb=&escape($symb);
5693: my $esc_v=&escape($version);
5694: my $reply =
5695: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5696: $uhome);
5697: if ($reply eq 'unknown_cmd') {
5698: # gfall back to way things use to be done
5699: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5700: $uname);
5701: }
5702: return $reply;
5703: }
5704:
5705: sub old_putstore {
5706: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5707: if (!$udomain) { $udomain=$env{'user.domain'}; }
5708: if (!$uname) { $uname=$env{'user.name'}; }
5709: my $uhome=&homeserver($uname,$udomain);
5710: my %newstorehash;
5711: foreach my $item (keys(%$storehash)) {
5712: my $key = $version.':'.&escape($symb).':'.$item;
5713: $newstorehash{$key} = $storehash->{$item};
5714: }
5715: my $items='';
5716: my %allitems = ();
5717: foreach my $item (keys(%newstorehash)) {
5718: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5719: my $key = $1.':keys:'.$2;
5720: $allitems{$key} .= $3.':';
5721: }
5722: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5723: }
5724: foreach my $item (keys(%allitems)) {
5725: $allitems{$item} =~ s/\:$//;
5726: $items.= $item.'='.$allitems{$item}.'&';
5727: }
5728: $items=~s/\&$//;
5729: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5730: }
5731:
5732: # ------------------------------------------------------ critical put interface
5733:
5734: sub cput {
5735: my ($namespace,$storehash,$udomain,$uname)=@_;
5736: if (!$udomain) { $udomain=$env{'user.domain'}; }
5737: if (!$uname) { $uname=$env{'user.name'}; }
5738: my $uhome=&homeserver($uname,$udomain);
5739: my $items='';
5740: foreach my $item (keys(%$storehash)) {
5741: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5742: }
5743: $items=~s/\&$//;
5744: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5745: }
5746:
5747: # -------------------------------------------------------------- eget interface
5748:
5749: sub eget {
5750: my ($namespace,$storearr,$udomain,$uname)=@_;
5751: my $items='';
5752: foreach my $item (@$storearr) {
5753: $items.=&escape($item).'&';
5754: }
5755: $items=~s/\&$//;
5756: if (!$udomain) { $udomain=$env{'user.domain'}; }
5757: if (!$uname) { $uname=$env{'user.name'}; }
5758: my $uhome=&homeserver($uname,$udomain);
5759: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5760: my @pairs=split(/\&/,$rep);
5761: my %returnhash=();
5762: my $i=0;
5763: foreach my $item (@$storearr) {
5764: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5765: $i++;
5766: }
5767: return %returnhash;
5768: }
5769:
5770: # ------------------------------------------------------------ tmpput interface
5771: sub tmpput {
5772: my ($storehash,$server,$context)=@_;
5773: my $items='';
5774: foreach my $item (keys(%$storehash)) {
5775: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5776: }
5777: $items=~s/\&$//;
5778: if (defined($context)) {
5779: $items .= ':'.&escape($context);
5780: }
5781: return &reply("tmpput:$items",$server);
5782: }
5783:
5784: # ------------------------------------------------------------ tmpget interface
5785: sub tmpget {
5786: my ($token,$server)=@_;
5787: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5788: my $rep=&reply("tmpget:$token",$server);
5789: my %returnhash;
5790: foreach my $item (split(/\&/,$rep)) {
5791: my ($key,$value)=split(/=/,$item);
5792: next if ($key =~ /^error: 2 /);
5793: $returnhash{&unescape($key)}=&thaw_unescape($value);
5794: }
5795: return %returnhash;
5796: }
5797:
5798: # ------------------------------------------------------------ tmpdel interface
5799: sub tmpdel {
5800: my ($token,$server)=@_;
5801: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5802: return &reply("tmpdel:$token",$server);
5803: }
5804:
5805: # ------------------------------------------------------------ get_timebased_id
5806:
5807: sub get_timebased_id {
5808: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
5809: $maxtries) = @_;
5810: my ($newid,$error,$dellock);
5811: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
5812: return ('','ok','invalid call to get suffix');
5813: }
5814:
5815: # set defaults for any optional args for which values were not supplied
5816: if ($who eq '') {
5817: $who = $env{'user.name'}.':'.$env{'user.domain'};
5818: }
5819: if (!$locktries) {
5820: $locktries = 3;
5821: }
5822: if (!$maxtries) {
5823: $maxtries = 10;
5824: }
5825:
5826: if (($cdom eq '') || ($cnum eq '')) {
5827: if ($env{'request.course.id'}) {
5828: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5829: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5830: }
5831: if (($cdom eq '') || ($cnum eq '')) {
5832: return ('','ok','call to get suffix not in course context');
5833: }
5834: }
5835:
5836: # construct locking item
5837: my $lockhash = {
5838: $prefix."\0".'locked_'.$keyid => $who,
5839: };
5840: my $tries = 0;
5841:
5842: # attempt to get lock on nohist_$namespace file
5843: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5844: while (($gotlock ne 'ok') && $tries <$locktries) {
5845: $tries ++;
5846: sleep 1;
5847: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5848: }
5849:
5850: # attempt to get unique identifier, based on current timestamp
5851: if ($gotlock eq 'ok') {
5852: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
5853: my $id = time;
5854: $newid = $id;
5855: my $idtries = 0;
5856: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
5857: if ($idtype eq 'concat') {
5858: $newid = $id.$idtries;
5859: } else {
5860: $newid ++;
5861: }
5862: $idtries ++;
5863: }
5864: if (!exists($inuse{$prefix."\0".$newid})) {
5865: my %new_item = (
5866: $prefix."\0".$newid => $who,
5867: );
5868: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
5869: $cdom,$cnum);
5870: if ($putresult ne 'ok') {
5871: undef($newid);
5872: $error = 'error saving new item: '.$putresult;
5873: }
5874: } else {
5875: $error = ('error: no unique suffix available for the new item ');
5876: }
5877: # remove lock
5878: my @del_lock = ($prefix."\0".'locked_'.$keyid);
5879: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
5880: } else {
5881: $error = "error: could not obtain lockfile\n";
5882: $dellock = 'ok';
5883: }
5884: return ($newid,$dellock,$error);
5885: }
5886:
5887: # -------------------------------------------------- portfolio access checking
5888:
5889: sub portfolio_access {
5890: my ($requrl) = @_;
5891: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5892: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5893: if ($result) {
5894: my %setters;
5895: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5896: my ($startblock,$endblock) =
5897: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5898: if ($startblock && $endblock) {
5899: return 'B';
5900: }
5901: } else {
5902: my ($startblock,$endblock) =
5903: &Apache::loncommon::blockcheck(\%setters,'port');
5904: if ($startblock && $endblock) {
5905: return 'B';
5906: }
5907: }
5908: }
5909: if ($result eq 'ok') {
5910: return 'F';
5911: } elsif ($result =~ /^[^:]+:guest_/) {
5912: return 'A';
5913: }
5914: return '';
5915: }
5916:
5917: sub get_portfolio_access {
5918: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5919:
5920: if (!ref($access_hash)) {
5921: my $current_perms = &get_portfile_permissions($udom,$unum);
5922: my %access_controls = &get_access_controls($current_perms,$group,
5923: $file_name);
5924: $access_hash = $access_controls{$file_name};
5925: }
5926:
5927: my ($public,$guest,@domains,@users,@courses,@groups);
5928: my $now = time;
5929: if (ref($access_hash) eq 'HASH') {
5930: foreach my $key (keys(%{$access_hash})) {
5931: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5932: if ($start > $now) {
5933: next;
5934: }
5935: if ($end && $end<$now) {
5936: next;
5937: }
5938: if ($scope eq 'public') {
5939: $public = $key;
5940: last;
5941: } elsif ($scope eq 'guest') {
5942: $guest = $key;
5943: } elsif ($scope eq 'domains') {
5944: push(@domains,$key);
5945: } elsif ($scope eq 'users') {
5946: push(@users,$key);
5947: } elsif ($scope eq 'course') {
5948: push(@courses,$key);
5949: } elsif ($scope eq 'group') {
5950: push(@groups,$key);
5951: }
5952: }
5953: if ($public) {
5954: return 'ok';
5955: }
5956: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5957: if ($guest) {
5958: return $guest;
5959: }
5960: } else {
5961: if (@domains > 0) {
5962: foreach my $domkey (@domains) {
5963: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5964: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5965: return 'ok';
5966: }
5967: }
5968: }
5969: }
5970: if (@users > 0) {
5971: foreach my $userkey (@users) {
5972: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5973: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5974: if (ref($item) eq 'HASH') {
5975: if (($item->{'uname'} eq $env{'user.name'}) &&
5976: ($item->{'udom'} eq $env{'user.domain'})) {
5977: return 'ok';
5978: }
5979: }
5980: }
5981: }
5982: }
5983: }
5984: my %roleshash;
5985: my @courses_and_groups = @courses;
5986: push(@courses_and_groups,@groups);
5987: if (@courses_and_groups > 0) {
5988: my (%allgroups,%allroles);
5989: my ($start,$end,$role,$sec,$group);
5990: foreach my $envkey (%env) {
5991: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5992: my $cid = $2.'_'.$3;
5993: if ($1 eq 'gr') {
5994: $group = $4;
5995: $allgroups{$cid}{$group} = $env{$envkey};
5996: } else {
5997: if ($4 eq '') {
5998: $sec = 'none';
5999: } else {
6000: $sec = $4;
6001: }
6002: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6003: }
6004: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6005: my $cid = $2.'_'.$3;
6006: if ($4 eq '') {
6007: $sec = 'none';
6008: } else {
6009: $sec = $4;
6010: }
6011: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6012: }
6013: }
6014: if (keys(%allroles) == 0) {
6015: return;
6016: }
6017: foreach my $key (@courses_and_groups) {
6018: my %content = %{$$access_hash{$key}};
6019: my $cnum = $content{'number'};
6020: my $cdom = $content{'domain'};
6021: my $cid = $cdom.'_'.$cnum;
6022: if (!exists($allroles{$cid})) {
6023: next;
6024: }
6025: foreach my $role_id (keys(%{$content{'roles'}})) {
6026: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6027: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6028: my @status = @{$content{'roles'}{$role_id}{'access'}};
6029: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6030: foreach my $role (keys(%{$allroles{$cid}})) {
6031: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6032: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6033: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6034: if (grep/^all$/,@sections) {
6035: return 'ok';
6036: } else {
6037: if (grep/^$sec$/,@sections) {
6038: return 'ok';
6039: }
6040: }
6041: }
6042: }
6043: if (keys(%{$allgroups{$cid}}) == 0) {
6044: if (grep/^none$/,@groups) {
6045: return 'ok';
6046: }
6047: } else {
6048: if (grep/^all$/,@groups) {
6049: return 'ok';
6050: }
6051: foreach my $group (keys(%{$allgroups{$cid}})) {
6052: if (grep/^$group$/,@groups) {
6053: return 'ok';
6054: }
6055: }
6056: }
6057: }
6058: }
6059: }
6060: }
6061: }
6062: if ($guest) {
6063: return $guest;
6064: }
6065: }
6066: }
6067: return;
6068: }
6069:
6070: sub course_group_datechecker {
6071: my ($dates,$now,$status) = @_;
6072: my ($start,$end) = split(/\./,$dates);
6073: if (!$start && !$end) {
6074: return 'ok';
6075: }
6076: if (grep/^active$/,@{$status}) {
6077: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6078: return 'ok';
6079: }
6080: }
6081: if (grep/^previous$/,@{$status}) {
6082: if ($end > $now ) {
6083: return 'ok';
6084: }
6085: }
6086: if (grep/^future$/,@{$status}) {
6087: if ($start > $now) {
6088: return 'ok';
6089: }
6090: }
6091: return;
6092: }
6093:
6094: sub parse_portfolio_url {
6095: my ($url) = @_;
6096:
6097: my ($type,$udom,$unum,$group,$file_name);
6098:
6099: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6100: $type = 1;
6101: $udom = $1;
6102: $unum = $2;
6103: $file_name = $3;
6104: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6105: $type = 2;
6106: $udom = $1;
6107: $unum = $2;
6108: $group = $3;
6109: $file_name = $3.'/'.$4;
6110: }
6111: if (wantarray) {
6112: return ($type,$udom,$unum,$file_name,$group);
6113: }
6114: return $type;
6115: }
6116:
6117: sub is_portfolio_url {
6118: my ($url) = @_;
6119: return scalar(&parse_portfolio_url($url));
6120: }
6121:
6122: sub is_portfolio_file {
6123: my ($file) = @_;
6124: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6125: return 1;
6126: }
6127: return;
6128: }
6129:
6130: sub usertools_access {
6131: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6132: my ($access,%tools);
6133: if ($context eq '') {
6134: $context = 'tools';
6135: }
6136: if ($context eq 'requestcourses') {
6137: %tools = (
6138: official => 1,
6139: unofficial => 1,
6140: community => 1,
6141: );
6142: } elsif ($context eq 'requestauthor') {
6143: %tools = (
6144: requestauthor => 1,
6145: );
6146: } else {
6147: %tools = (
6148: aboutme => 1,
6149: blog => 1,
6150: webdav => 1,
6151: portfolio => 1,
6152: );
6153: }
6154: return if (!defined($tools{$tool}));
6155:
6156: if ((!defined($udom)) || (!defined($uname))) {
6157: $udom = $env{'user.domain'};
6158: $uname = $env{'user.name'};
6159: }
6160:
6161: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6162: if ($action ne 'reload') {
6163: if ($context eq 'requestcourses') {
6164: return $env{'environment.canrequest.'.$tool};
6165: } elsif ($context eq 'requestauthor') {
6166: return $env{'environment.canrequest.author'};
6167: } else {
6168: return $env{'environment.availabletools.'.$tool};
6169: }
6170: }
6171: }
6172:
6173: my ($toolstatus,$inststatus,$envkey);
6174: if ($context eq 'requestauthor') {
6175: $envkey = $context;
6176: } else {
6177: $envkey = $context.'.'.$tool;
6178: }
6179:
6180: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6181: ($action ne 'reload')) {
6182: $toolstatus = $env{'environment.'.$envkey};
6183: $inststatus = $env{'environment.inststatus'};
6184: } else {
6185: if (ref($userenvref) eq 'HASH') {
6186: $toolstatus = $userenvref->{$envkey};
6187: $inststatus = $userenvref->{'inststatus'};
6188: } else {
6189: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6190: $toolstatus = $userenv{$envkey};
6191: $inststatus = $userenv{'inststatus'};
6192: }
6193: }
6194:
6195: if ($toolstatus ne '') {
6196: if ($toolstatus) {
6197: $access = 1;
6198: } else {
6199: $access = 0;
6200: }
6201: return $access;
6202: }
6203:
6204: my ($is_adv,%domdef);
6205: if (ref($is_advref) eq 'HASH') {
6206: $is_adv = $is_advref->{'is_adv'};
6207: } else {
6208: $is_adv = &is_advanced_user($udom,$uname);
6209: }
6210: if (ref($domdefref) eq 'HASH') {
6211: %domdef = %{$domdefref};
6212: } else {
6213: %domdef = &get_domain_defaults($udom);
6214: }
6215: if (ref($domdef{$tool}) eq 'HASH') {
6216: if ($is_adv) {
6217: if ($domdef{$tool}{'_LC_adv'} ne '') {
6218: if ($domdef{$tool}{'_LC_adv'}) {
6219: $access = 1;
6220: } else {
6221: $access = 0;
6222: }
6223: return $access;
6224: }
6225: }
6226: if ($inststatus ne '') {
6227: my ($hasaccess,$hasnoaccess);
6228: foreach my $affiliation (split(/:/,$inststatus)) {
6229: if ($domdef{$tool}{$affiliation} ne '') {
6230: if ($domdef{$tool}{$affiliation}) {
6231: $hasaccess = 1;
6232: } else {
6233: $hasnoaccess = 1;
6234: }
6235: }
6236: }
6237: if ($hasaccess || $hasnoaccess) {
6238: if ($hasaccess) {
6239: $access = 1;
6240: } elsif ($hasnoaccess) {
6241: $access = 0;
6242: }
6243: return $access;
6244: }
6245: } else {
6246: if ($domdef{$tool}{'default'} ne '') {
6247: if ($domdef{$tool}{'default'}) {
6248: $access = 1;
6249: } elsif ($domdef{$tool}{'default'} == 0) {
6250: $access = 0;
6251: }
6252: return $access;
6253: }
6254: }
6255: } else {
6256: if (($context eq 'tools') && ($tool ne 'webdav')) {
6257: $access = 1;
6258: } else {
6259: $access = 0;
6260: }
6261: return $access;
6262: }
6263: }
6264:
6265: sub is_course_owner {
6266: my ($cdom,$cnum,$udom,$uname) = @_;
6267: if (($udom eq '') || ($uname eq '')) {
6268: $udom = $env{'user.domain'};
6269: $uname = $env{'user.name'};
6270: }
6271: unless (($udom eq '') || ($uname eq '')) {
6272: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6273: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6274: return 1;
6275: } else {
6276: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6277: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6278: return 1;
6279: }
6280: }
6281: }
6282: }
6283: return;
6284: }
6285:
6286: sub is_advanced_user {
6287: my ($udom,$uname) = @_;
6288: if ($udom ne '' && $uname ne '') {
6289: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6290: if (wantarray) {
6291: return ($env{'user.adv'},$env{'user.author'});
6292: } else {
6293: return $env{'user.adv'};
6294: }
6295: }
6296: }
6297: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6298: my %allroles;
6299: my ($is_adv,$is_author);
6300: foreach my $role (keys(%roleshash)) {
6301: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6302: my $area = '/'.$tdomain.'/'.$trest;
6303: if ($sec ne '') {
6304: $area .= '/'.$sec;
6305: }
6306: if (($area ne '') && ($trole ne '')) {
6307: my $spec=$trole.'.'.$area;
6308: if ($trole =~ /^cr\//) {
6309: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6310: } elsif ($trole ne 'gr') {
6311: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6312: }
6313: if ($trole eq 'au') {
6314: $is_author = 1;
6315: }
6316: }
6317: }
6318: foreach my $role (keys(%allroles)) {
6319: last if ($is_adv);
6320: foreach my $item (split(/:/,$allroles{$role})) {
6321: if ($item ne '') {
6322: my ($privilege,$restrictions)=split(/&/,$item);
6323: if ($privilege eq 'adv') {
6324: $is_adv = 1;
6325: last;
6326: }
6327: }
6328: }
6329: }
6330: if (wantarray) {
6331: return ($is_adv,$is_author);
6332: }
6333: return $is_adv;
6334: }
6335:
6336: sub check_can_request {
6337: my ($dom,$can_request,$request_domains) = @_;
6338: my $canreq = 0;
6339: my ($types,$typename) = &Apache::loncommon::course_types();
6340: my @options = ('approval','validate','autolimit');
6341: my $optregex = join('|',@options);
6342: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6343: foreach my $type (@{$types}) {
6344: if (&usertools_access($env{'user.name'},
6345: $env{'user.domain'},
6346: $type,undef,'requestcourses')) {
6347: $canreq ++;
6348: if (ref($request_domains) eq 'HASH') {
6349: push(@{$request_domains->{$type}},$env{'user.domain'});
6350: }
6351: if ($dom eq $env{'user.domain'}) {
6352: $can_request->{$type} = 1;
6353: }
6354: }
6355: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6356: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6357: if (@curr > 0) {
6358: foreach my $item (@curr) {
6359: if (ref($request_domains) eq 'HASH') {
6360: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6361: if ($otherdom ne '') {
6362: if (ref($request_domains->{$type}) eq 'ARRAY') {
6363: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6364: push(@{$request_domains->{$type}},$otherdom);
6365: }
6366: } else {
6367: push(@{$request_domains->{$type}},$otherdom);
6368: }
6369: }
6370: }
6371: }
6372: unless($dom eq $env{'user.domain'}) {
6373: $canreq ++;
6374: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6375: $can_request->{$type} = 1;
6376: }
6377: }
6378: }
6379: }
6380: }
6381: }
6382: return $canreq;
6383: }
6384:
6385: # ---------------------------------------------- Custom access rule evaluation
6386:
6387: sub customaccess {
6388: my ($priv,$uri)=@_;
6389: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6390: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6391: $udom = &LONCAPA::clean_domain($udom);
6392: $ucrs = &LONCAPA::clean_username($ucrs);
6393: my $access=0;
6394: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6395: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6396: if ($type eq 'user') {
6397: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6398: my ($tdom,$tuname)=split(m{/},$scope);
6399: if ($tdom) {
6400: if ($tdom ne $env{'user.domain'}) { next; }
6401: }
6402: if ($tuname) {
6403: if ($tuname ne $env{'user.name'}) { next; }
6404: }
6405: $access=($effect eq 'allow');
6406: last;
6407: }
6408: } else {
6409: if ($role) {
6410: if ($role ne $urole) { next; }
6411: }
6412: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6413: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6414: if ($tdom) {
6415: if ($tdom ne $udom) { next; }
6416: }
6417: if ($tcrs) {
6418: if ($tcrs ne $ucrs) { next; }
6419: }
6420: if ($tsec) {
6421: if ($tsec ne $usec) { next; }
6422: }
6423: $access=($effect eq 'allow');
6424: last;
6425: }
6426: if ($realm eq '' && $role eq '') {
6427: $access=($effect eq 'allow');
6428: }
6429: }
6430: }
6431: return $access;
6432: }
6433:
6434: # ------------------------------------------------- Check for a user privilege
6435:
6436: sub allowed {
6437: my ($priv,$uri,$symb,$role)=@_;
6438: my $ver_orguri=$uri;
6439: $uri=&deversion($uri);
6440: my $orguri=$uri;
6441: $uri=&declutter($uri);
6442:
6443: if ($priv eq 'evb') {
6444: # Evade communication block restrictions for specified role in a course
6445: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6446: return $1;
6447: } else {
6448: return;
6449: }
6450: }
6451:
6452: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6453: # Free bre access to adm and meta resources
6454: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6455: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6456: && ($priv eq 'bre')) {
6457: return 'F';
6458: }
6459:
6460: # Free bre access to user's own portfolio contents
6461: my ($space,$domain,$name,@dir)=split('/',$uri);
6462: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6463: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6464: my %setters;
6465: my ($startblock,$endblock) =
6466: &Apache::loncommon::blockcheck(\%setters,'port');
6467: if ($startblock && $endblock) {
6468: return 'B';
6469: } else {
6470: return 'F';
6471: }
6472: }
6473:
6474: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6475: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6476: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6477: if (exists($env{'request.course.id'})) {
6478: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6479: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6480: if (($domain eq $cdom) && ($name eq $cnum)) {
6481: my $courseprivid=$env{'request.course.id'};
6482: $courseprivid=~s/\_/\//;
6483: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6484: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6485: return $1;
6486: } else {
6487: if ($env{'request.course.sec'}) {
6488: $courseprivid.='/'.$env{'request.course.sec'};
6489: }
6490: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6491: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6492: return $2;
6493: }
6494: }
6495: }
6496: }
6497: }
6498:
6499: # Free bre to public access
6500:
6501: if ($priv eq 'bre') {
6502: my $copyright=&metadata($uri,'copyright');
6503: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6504: return 'F';
6505: }
6506: if ($copyright eq 'priv') {
6507: $uri=~/([^\/]+)\/([^\/]+)\//;
6508: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6509: return '';
6510: }
6511: }
6512: if ($copyright eq 'domain') {
6513: $uri=~/([^\/]+)\/([^\/]+)\//;
6514: unless (($env{'user.domain'} eq $1) ||
6515: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6516: return '';
6517: }
6518: }
6519: if ($env{'request.role'}=~ /li\.\//) {
6520: # Library role, so allow browsing of resources in this domain.
6521: return 'F';
6522: }
6523: if ($copyright eq 'custom') {
6524: unless (&customaccess($priv,$uri)) { return ''; }
6525: }
6526: }
6527: # Domain coordinator is trying to create a course
6528: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6529: # uri is the requested domain in this case.
6530: # comparison to 'request.role.domain' shows if the user has selected
6531: # a role of dc for the domain in question.
6532: return 'F' if ($uri eq $env{'request.role.domain'});
6533: }
6534:
6535: my $thisallowed='';
6536: my $statecond=0;
6537: my $courseprivid='';
6538:
6539: my $ownaccess;
6540: # Community Coordinator or Assistant Co-author browsing resource space.
6541: if (($priv eq 'bro') && ($env{'user.author'})) {
6542: if ($uri eq '') {
6543: $ownaccess = 1;
6544: } else {
6545: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6546: my $udom = $env{'user.domain'};
6547: my $uname = $env{'user.name'};
6548: if ($uri =~ m{^\Q$udom\E/?$}) {
6549: $ownaccess = 1;
6550: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6551: unless ($uri =~ m{\.\./}) {
6552: $ownaccess = 1;
6553: }
6554: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6555: my $now = time;
6556: if ($uri =~ m{^([^/]+)/?$}) {
6557: my $adom = $1;
6558: foreach my $key (keys(%env)) {
6559: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6560: my ($start,$end) = split('.',$env{$key});
6561: if (($now >= $start) && (!$end || $end < $now)) {
6562: $ownaccess = 1;
6563: last;
6564: }
6565: }
6566: }
6567: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6568: my $adom = $1;
6569: my $aname = $2;
6570: foreach my $role ('ca','aa') {
6571: if ($env{"user.role.$role./$adom/$aname"}) {
6572: my ($start,$end) =
6573: split('.',$env{"user.role.$role./$adom/$aname"});
6574: if (($now >= $start) && (!$end || $end < $now)) {
6575: $ownaccess = 1;
6576: last;
6577: }
6578: }
6579: }
6580: }
6581: }
6582: }
6583: }
6584: }
6585:
6586: # Course
6587:
6588: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6589: unless (($priv eq 'bro') && (!$ownaccess)) {
6590: $thisallowed.=$1;
6591: }
6592: }
6593:
6594: # Domain
6595:
6596: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6597: =~/\Q$priv\E\&([^\:]*)/) {
6598: unless (($priv eq 'bro') && (!$ownaccess)) {
6599: $thisallowed.=$1;
6600: }
6601: }
6602:
6603: # User who is not author or co-author might still be able to edit
6604: # resource of an author in the domain (e.g., if Domain Coordinator).
6605: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6606: (&allowed('mdc',$env{'request.course.id'}))) {
6607: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6608: $thisallowed.=$1;
6609: }
6610: }
6611:
6612: # Course: uri itself is a course
6613: my $courseuri=$uri;
6614: $courseuri=~s/\_(\d)/\/$1/;
6615: $courseuri=~s/^([^\/])/\/$1/;
6616:
6617: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6618: =~/\Q$priv\E\&([^\:]*)/) {
6619: unless (($priv eq 'bro') && (!$ownaccess)) {
6620: $thisallowed.=$1;
6621: }
6622: }
6623:
6624: # URI is an uploaded document for this course, default permissions don't matter
6625: # not allowing 'edit' access (editupload) to uploaded course docs
6626: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6627: $thisallowed='';
6628: my ($match)=&is_on_map($uri);
6629: if ($match) {
6630: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6631: =~/\Q$priv\E\&([^\:]*)/) {
6632: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6633: if (@blockers > 0) {
6634: $thisallowed = 'B';
6635: } else {
6636: $thisallowed.=$1;
6637: }
6638: }
6639: } else {
6640: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6641: if ($refuri) {
6642: if ($refuri =~ m|^/adm/|) {
6643: $thisallowed='F';
6644: } else {
6645: $refuri=&declutter($refuri);
6646: my ($match) = &is_on_map($refuri);
6647: if ($match) {
6648: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6649: if (@blockers > 0) {
6650: $thisallowed = 'B';
6651: } else {
6652: $thisallowed='F';
6653: }
6654: }
6655: }
6656: }
6657: }
6658: }
6659:
6660: if ($priv eq 'bre'
6661: && $thisallowed ne 'F'
6662: && $thisallowed ne '2'
6663: && &is_portfolio_url($uri)) {
6664: $thisallowed = &portfolio_access($uri);
6665: }
6666:
6667: # Full access at system, domain or course-wide level? Exit.
6668: if ($thisallowed=~/F/) {
6669: return 'F';
6670: }
6671:
6672: # If this is generating or modifying users, exit with special codes
6673:
6674: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6675: if (($priv eq 'cca') || ($priv eq 'caa')) {
6676: my ($audom,$auname)=split('/',$uri);
6677: # no author name given, so this just checks on the general right to make a co-author in this domain
6678: unless ($auname) { return $thisallowed; }
6679: # an author name is given, so we are about to actually make a co-author for a certain account
6680: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6681: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6682: ($audom ne $env{'request.role.domain'}))) { return ''; }
6683: }
6684: return $thisallowed;
6685: }
6686: #
6687: # Gathered so far: system, domain and course wide privileges
6688: #
6689: # Course: See if uri or referer is an individual resource that is part of
6690: # the course
6691:
6692: if ($env{'request.course.id'}) {
6693:
6694: $courseprivid=$env{'request.course.id'};
6695: if ($env{'request.course.sec'}) {
6696: $courseprivid.='/'.$env{'request.course.sec'};
6697: }
6698: $courseprivid=~s/\_/\//;
6699: my $checkreferer=1;
6700: my ($match,$cond)=&is_on_map($uri);
6701: if ($match) {
6702: $statecond=$cond;
6703: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6704: =~/\Q$priv\E\&([^\:]*)/) {
6705: my $value = $1;
6706: if ($priv eq 'bre') {
6707: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6708: if (@blockers > 0) {
6709: $thisallowed = 'B';
6710: } else {
6711: $thisallowed.=$value;
6712: }
6713: } else {
6714: $thisallowed.=$value;
6715: }
6716: $checkreferer=0;
6717: }
6718: }
6719:
6720: if ($checkreferer) {
6721: my $refuri=$env{'httpref.'.$orguri};
6722: unless ($refuri) {
6723: foreach my $key (keys(%env)) {
6724: if ($key=~/^httpref\..*\*/) {
6725: my $pattern=$key;
6726: $pattern=~s/^httpref\.\/res\///;
6727: $pattern=~s/\*/\[\^\/\]\+/g;
6728: $pattern=~s/\//\\\//g;
6729: if ($orguri=~/$pattern/) {
6730: $refuri=$env{$key};
6731: }
6732: }
6733: }
6734: }
6735:
6736: if ($refuri) {
6737: $refuri=&declutter($refuri);
6738: my ($match,$cond)=&is_on_map($refuri);
6739: if ($match) {
6740: my $refstatecond=$cond;
6741: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6742: =~/\Q$priv\E\&([^\:]*)/) {
6743: my $value = $1;
6744: if ($priv eq 'bre') {
6745: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6746: if (@blockers > 0) {
6747: $thisallowed = 'B';
6748: } else {
6749: $thisallowed.=$value;
6750: }
6751: } else {
6752: $thisallowed.=$value;
6753: }
6754: $uri=$refuri;
6755: $statecond=$refstatecond;
6756: }
6757: }
6758: }
6759: }
6760: }
6761:
6762: #
6763: # Gathered now: all privileges that could apply, and condition number
6764: #
6765: #
6766: # Full or no access?
6767: #
6768:
6769: if ($thisallowed=~/F/) {
6770: return 'F';
6771: }
6772:
6773: unless ($thisallowed) {
6774: return '';
6775: }
6776:
6777: # Restrictions exist, deal with them
6778: #
6779: # C:according to course preferences
6780: # R:according to resource settings
6781: # L:unless locked
6782: # X:according to user session state
6783: #
6784:
6785: # Possibly locked functionality, check all courses
6786: # Locks might take effect only after 10 minutes cache expiration for other
6787: # courses, and 2 minutes for current course
6788:
6789: my $envkey;
6790: if ($thisallowed=~/L/) {
6791: foreach $envkey (keys(%env)) {
6792: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6793: my $courseid=$2;
6794: my $roleid=$1.'.'.$2;
6795: $courseid=~s/^\///;
6796: my $expiretime=600;
6797: if ($env{'request.role'} eq $roleid) {
6798: $expiretime=120;
6799: }
6800: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6801: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6802: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6803: &coursedescription($courseid,{'freshen_cache' => 1});
6804: }
6805: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6806: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6807: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6808: &log($env{'user.domain'},$env{'user.name'},
6809: $env{'user.home'},
6810: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6811: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6812: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6813: return '';
6814: }
6815: }
6816: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6817: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6818: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6819: &log($env{'user.domain'},$env{'user.name'},
6820: $env{'user.home'},
6821: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6822: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6823: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6824: return '';
6825: }
6826: }
6827: }
6828: }
6829: }
6830:
6831: #
6832: # Rest of the restrictions depend on selected course
6833: #
6834:
6835: unless ($env{'request.course.id'}) {
6836: if ($thisallowed eq 'A') {
6837: return 'A';
6838: } elsif ($thisallowed eq 'B') {
6839: return 'B';
6840: } else {
6841: return '1';
6842: }
6843: }
6844:
6845: #
6846: # Now user is definitely in a course
6847: #
6848:
6849:
6850: # Course preferences
6851:
6852: if ($thisallowed=~/C/) {
6853: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6854: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6855: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6856: =~/\Q$rolecode\E/) {
6857: if (($priv ne 'pch') && ($priv ne 'plc')) {
6858: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6859: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6860: $env{'request.course.id'});
6861: }
6862: return '';
6863: }
6864:
6865: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6866: =~/\Q$unamedom\E/) {
6867: if (($priv ne 'pch') && ($priv ne 'plc')) {
6868: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6869: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6870: $env{'request.course.id'});
6871: }
6872: return '';
6873: }
6874: }
6875:
6876: # Resource preferences
6877:
6878: if ($thisallowed=~/R/) {
6879: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6880: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6881: if (($priv ne 'pch') && ($priv ne 'plc')) {
6882: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6883: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6884: }
6885: return '';
6886: }
6887: }
6888:
6889: # Restricted by state or randomout?
6890:
6891: if ($thisallowed=~/X/) {
6892: if ($env{'acc.randomout'}) {
6893: if (!$symb) { $symb=&symbread($uri,1); }
6894: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6895: return '';
6896: }
6897: }
6898: if (&condval($statecond)) {
6899: return '2';
6900: } else {
6901: return '';
6902: }
6903: }
6904:
6905: if ($thisallowed eq 'A') {
6906: return 'A';
6907: } elsif ($thisallowed eq 'B') {
6908: return 'B';
6909: }
6910: return 'F';
6911: }
6912:
6913: # ------------------------------------------- Check construction space access
6914:
6915: sub constructaccess {
6916: my ($url,$setpriv)=@_;
6917:
6918: # We do not allow editing of previous versions of files
6919: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6920:
6921: # Get username and domain from URL
6922: my ($ownername,$ownerdomain,$ownerhome);
6923:
6924: ($ownerdomain,$ownername) =
6925: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6926:
6927: # The URL does not really point to any authorspace, forget it
6928: unless (($ownername) && ($ownerdomain)) { return ''; }
6929:
6930: # Now we need to see if the user has access to the authorspace of
6931: # $ownername at $ownerdomain
6932:
6933: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6934: # Real author for this?
6935: $ownerhome = $env{'user.home'};
6936: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6937: return ($ownername,$ownerdomain,$ownerhome);
6938: }
6939: } else {
6940: # Co-author for this?
6941: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6942: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6943: $ownerhome = &homeserver($ownername,$ownerdomain);
6944: return ($ownername,$ownerdomain,$ownerhome);
6945: }
6946: }
6947:
6948: # We don't have any access right now. If we are not possibly going to do anything about this,
6949: # we might as well leave
6950: unless ($setpriv) { return ''; }
6951:
6952: # Backdoor access?
6953: my $allowed=&allowed('eco',$ownerdomain);
6954: # Nope
6955: unless ($allowed) { return ''; }
6956: # Looks like we may have access, but could be locked by the owner of the construction space
6957: if ($allowed eq 'U') {
6958: my %blocked=&get('environment',['domcoord.author'],
6959: $ownerdomain,$ownername);
6960: # Is blocked by owner
6961: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
6962: }
6963: if (($allowed eq 'F') || ($allowed eq 'U')) {
6964: # Grant temporary access
6965: my $then=$env{'user.login.time'};
6966: my $update=$env{'user.update.time'};
6967: if (!$update) { $update = $then; }
6968: my $refresh=$env{'user.refresh.time'};
6969: if (!$refresh) { $refresh = $update; }
6970: my $now = time;
6971: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
6972: $now,'ca','constructaccess');
6973: $ownerhome = &homeserver($ownername,$ownerdomain);
6974: return($ownername,$ownerdomain,$ownerhome);
6975: }
6976: # No business here
6977: return '';
6978: }
6979:
6980: sub get_comm_blocks {
6981: my ($cdom,$cnum) = @_;
6982: if ($cdom eq '' || $cnum eq '') {
6983: return unless ($env{'request.course.id'});
6984: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6985: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6986: }
6987: my %commblocks;
6988: my $hashid=$cdom.'_'.$cnum;
6989: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6990: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6991: %commblocks = %{$blocksref};
6992: } else {
6993: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6994: my $cachetime = 600;
6995: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6996: }
6997: return %commblocks;
6998: }
6999:
7000: sub has_comm_blocking {
7001: my ($priv,$symb,$uri,$blocks) = @_;
7002: return unless ($env{'request.course.id'});
7003: return unless ($priv eq 'bre');
7004: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7005: my %commblocks;
7006: if (ref($blocks) eq 'HASH') {
7007: %commblocks = %{$blocks};
7008: } else {
7009: %commblocks = &get_comm_blocks();
7010: }
7011: return unless (keys(%commblocks) > 0);
7012: if (!$symb) { $symb=&symbread($uri,1); }
7013: my ($map,$resid,undef)=&decode_symb($symb);
7014: my %tocheck = (
7015: maps => $map,
7016: resources => $symb,
7017: );
7018: my @blockers;
7019: my $now = time;
7020: my $navmap = Apache::lonnavmaps::navmap->new();
7021: foreach my $block (keys(%commblocks)) {
7022: if ($block =~ /^(\d+)____(\d+)$/) {
7023: my ($start,$end) = ($1,$2);
7024: if ($start <= $now && $end >= $now) {
7025: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7026: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7027: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7028: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
7029: unless (grep(/^\Q$block\E$/,@blockers)) {
7030: push(@blockers,$block);
7031: }
7032: }
7033: }
7034: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7035: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
7036: unless (grep(/^\Q$block\E$/,@blockers)) {
7037: push(@blockers,$block);
7038: }
7039: }
7040: }
7041: }
7042: }
7043: }
7044: } elsif ($block =~ /^firstaccess____(.+)$/) {
7045: my $item = $1;
7046: my @to_test;
7047: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7048: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7049: my $check_interval;
7050: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
7051: my @interval;
7052: my $type = 'map';
7053: if ($item eq 'course') {
7054: $type = 'course';
7055: @interval=&EXT("resource.0.interval");
7056: } else {
7057: if ($item =~ /___\d+___/) {
7058: $type = 'resource';
7059: @interval=&EXT("resource.0.interval",$item);
7060: if (ref($navmap)) {
7061: my $res = $navmap->getBySymb($item);
7062: push(@to_test,$res);
7063: }
7064: } else {
7065: my $mapsymb = &symbread($item,1);
7066: if ($mapsymb) {
7067: if (ref($navmap)) {
7068: my $mapres = $navmap->getBySymb($mapsymb);
7069: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
7070: foreach my $res (@to_test) {
7071: my $symb = $res->symb();
7072: next if ($symb eq $mapsymb);
7073: if ($symb ne '') {
7074: @interval=&EXT("resource.0.interval",$symb);
7075: last;
7076: }
7077: }
7078: }
7079: }
7080: }
7081: }
7082: if ($interval[0] =~ /\d+/) {
7083: my $first_access;
7084: if ($type eq 'resource') {
7085: $first_access=&get_first_access($interval[1],$item);
7086: } elsif ($type eq 'map') {
7087: $first_access=&get_first_access($interval[1],undef,$item);
7088: } else {
7089: $first_access=&get_first_access($interval[1]);
7090: }
7091: if ($first_access) {
7092: my $timesup = $first_access+$interval[0];
7093: if ($timesup > $now) {
7094: foreach my $res (@to_test) {
7095: if ($res->is_problem()) {
7096: if ($res->completable()) {
7097: unless (grep(/^\Q$block\E$/,@blockers)) {
7098: push(@blockers,$block);
7099: }
7100: last;
7101: }
7102: }
7103: }
7104: }
7105: }
7106: }
7107: }
7108: }
7109: }
7110: }
7111: }
7112: return @blockers;
7113: }
7114:
7115: sub check_docs_block {
7116: my ($docsblock,$tocheck) =@_;
7117: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7118: return;
7119: }
7120: if (ref($docsblock->{'maps'}) eq 'HASH') {
7121: if ($tocheck->{'maps'}) {
7122: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7123: return 1;
7124: }
7125: }
7126: }
7127: if (ref($docsblock->{'resources'}) eq 'HASH') {
7128: if ($tocheck->{'resources'}) {
7129: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7130: return 1;
7131: }
7132: }
7133: }
7134: return;
7135: }
7136:
7137: #
7138: # Removes the versino from a URI and
7139: # splits it in to its filename and path to the filename.
7140: # Seems like File::Basename could have done this more clearly.
7141: # Parameters:
7142: # $uri - input URI
7143: # Returns:
7144: # Two element list consisting of
7145: # $pathname - the URI up to and excluding the trailing /
7146: # $filename - The part of the URI following the last /
7147: # NOTE:
7148: # Another realization of this is simply:
7149: # use File::Basename;
7150: # ...
7151: # $uri = shift;
7152: # $filename = basename($uri);
7153: # $path = dirname($uri);
7154: # return ($filename, $path);
7155: #
7156: # The implementation below is probably faster however.
7157: #
7158: sub split_uri_for_cond {
7159: my $uri=&deversion(&declutter(shift));
7160: my @uriparts=split(/\//,$uri);
7161: my $filename=pop(@uriparts);
7162: my $pathname=join('/',@uriparts);
7163: return ($pathname,$filename);
7164: }
7165: # --------------------------------------------------- Is a resource on the map?
7166:
7167: sub is_on_map {
7168: my ($pathname,$filename) = &split_uri_for_cond(shift);
7169: #Trying to find the conditional for the file
7170: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7171: /\&\Q$filename\E\:([\d\|]+)\&/);
7172: if ($match) {
7173: return (1,$1);
7174: } else {
7175: return (0,0);
7176: }
7177: }
7178:
7179: # --------------------------------------------------------- Get symb from alias
7180:
7181: sub get_symb_from_alias {
7182: my $symb=shift;
7183: my ($map,$resid,$url)=&decode_symb($symb);
7184: # Already is a symb
7185: if ($url) { return $symb; }
7186: # Must be an alias
7187: my $aliassymb='';
7188: my %bighash;
7189: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7190: &GDBM_READER(),0640)) {
7191: my $rid=$bighash{'mapalias_'.$symb};
7192: if ($rid) {
7193: my ($mapid,$resid)=split(/\./,$rid);
7194: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7195: $resid,$bighash{'src_'.$rid});
7196: }
7197: untie %bighash;
7198: }
7199: return $aliassymb;
7200: }
7201:
7202: # ----------------------------------------------------------------- Define Role
7203:
7204: sub definerole {
7205: if (allowed('mcr','/')) {
7206: my ($rolename,$sysrole,$domrole,$courole)=@_;
7207: foreach my $role (split(':',$sysrole)) {
7208: my ($crole,$cqual)=split(/\&/,$role);
7209: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7210: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7211: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7212: return "refused:s:$crole&$cqual";
7213: }
7214: }
7215: }
7216: foreach my $role (split(':',$domrole)) {
7217: my ($crole,$cqual)=split(/\&/,$role);
7218: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7219: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7220: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7221: return "refused:d:$crole&$cqual";
7222: }
7223: }
7224: }
7225: foreach my $role (split(':',$courole)) {
7226: my ($crole,$cqual)=split(/\&/,$role);
7227: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7228: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7229: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7230: return "refused:c:$crole&$cqual";
7231: }
7232: }
7233: }
7234: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7235: "$env{'user.domain'}:$env{'user.name'}:".
7236: "rolesdef_$rolename=".
7237: escape($sysrole.'_'.$domrole.'_'.$courole);
7238: return reply($command,$env{'user.home'});
7239: } else {
7240: return 'refused';
7241: }
7242: }
7243:
7244: # ---------------- Make a metadata query against the network of library servers
7245:
7246: sub metadata_query {
7247: my ($query,$custom,$customshow,$server_array)=@_;
7248: my %rhash;
7249: my %libserv = &all_library();
7250: my @server_list = (defined($server_array) ? @$server_array
7251: : keys(%libserv) );
7252: for my $server (@server_list) {
7253: unless ($custom or $customshow) {
7254: my $reply=&reply("querysend:".&escape($query),$server);
7255: $rhash{$server}=$reply;
7256: }
7257: else {
7258: my $reply=&reply("querysend:".&escape($query).':'.
7259: &escape($custom).':'.&escape($customshow),
7260: $server);
7261: $rhash{$server}=$reply;
7262: }
7263: }
7264: return \%rhash;
7265: }
7266:
7267: # ----------------------------------------- Send log queries and wait for reply
7268:
7269: sub log_query {
7270: my ($uname,$udom,$query,%filters)=@_;
7271: my $uhome=&homeserver($uname,$udom);
7272: if ($uhome eq 'no_host') { return 'error: no_host'; }
7273: my $uhost=&hostname($uhome);
7274: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7275: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7276: $uhome);
7277: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7278: return get_query_reply($queryid);
7279: }
7280:
7281: # -------------------------- Update MySQL table for portfolio file
7282:
7283: sub update_portfolio_table {
7284: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7285: if ($group ne '') {
7286: $file_name =~s /^\Q$group\E//;
7287: }
7288: my $homeserver = &homeserver($uname,$udom);
7289: my $queryid=
7290: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7291: ':'.&escape($file_name).':'.$action,$homeserver);
7292: my $reply = &get_query_reply($queryid);
7293: return $reply;
7294: }
7295:
7296: # -------------------------- Update MySQL allusers table
7297:
7298: sub update_allusers_table {
7299: my ($uname,$udom,$names) = @_;
7300: my $homeserver = &homeserver($uname,$udom);
7301: my $queryid=
7302: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7303: 'lastname='.&escape($names->{'lastname'}).'%%'.
7304: 'firstname='.&escape($names->{'firstname'}).'%%'.
7305: 'middlename='.&escape($names->{'middlename'}).'%%'.
7306: 'generation='.&escape($names->{'generation'}).'%%'.
7307: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7308: 'id='.&escape($names->{'id'}),$homeserver);
7309: return;
7310: }
7311:
7312: # ------- Request retrieval of institutional classlists for course(s)
7313:
7314: sub fetch_enrollment_query {
7315: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7316: my $homeserver;
7317: my $maxtries = 1;
7318: if ($context eq 'automated') {
7319: $homeserver = $perlvar{'lonHostID'};
7320: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7321: } else {
7322: $homeserver = &homeserver($cnum,$dom);
7323: }
7324: my $host=&hostname($homeserver);
7325: my $cmd = '';
7326: foreach my $affiliate (keys(%{$affiliatesref})) {
7327: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7328: }
7329: $cmd =~ s/%%$//;
7330: $cmd = &escape($cmd);
7331: my $query = 'fetchenrollment';
7332: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7333: unless ($queryid=~/^\Q$host\E\_/) {
7334: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7335: return 'error: '.$queryid;
7336: }
7337: my $reply = &get_query_reply($queryid);
7338: my $tries = 1;
7339: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7340: $reply = &get_query_reply($queryid);
7341: $tries ++;
7342: }
7343: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7344: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7345: } else {
7346: my @responses = split(/:/,$reply);
7347: if ($homeserver eq $perlvar{'lonHostID'}) {
7348: foreach my $line (@responses) {
7349: my ($key,$value) = split(/=/,$line,2);
7350: $$replyref{$key} = $value;
7351: }
7352: } else {
7353: my $pathname = LONCAPA::tempdir();
7354: foreach my $line (@responses) {
7355: my ($key,$value) = split(/=/,$line);
7356: $$replyref{$key} = $value;
7357: if ($value > 0) {
7358: foreach my $item (@{$$affiliatesref{$key}}) {
7359: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7360: my $destname = $pathname.'/'.$filename;
7361: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7362: if ($xml_classlist =~ /^error/) {
7363: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7364: } else {
7365: if ( open(FILE,">$destname") ) {
7366: print FILE &unescape($xml_classlist);
7367: close(FILE);
7368: } else {
7369: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7370: }
7371: }
7372: }
7373: }
7374: }
7375: }
7376: return 'ok';
7377: }
7378: return 'error';
7379: }
7380:
7381: sub get_query_reply {
7382: my $queryid=shift;
7383: my $replyfile=LONCAPA::tempdir().$queryid;
7384: my $reply='';
7385: for (1..100) {
7386: sleep 2;
7387: if (-e $replyfile.'.end') {
7388: if (open(my $fh,$replyfile)) {
7389: $reply = join('',<$fh>);
7390: close($fh);
7391: } else { return 'error: reply_file_error'; }
7392: return &unescape($reply);
7393: }
7394: }
7395: return 'timeout:'.$queryid;
7396: }
7397:
7398: sub courselog_query {
7399: #
7400: # possible filters:
7401: # url: url or symb
7402: # username
7403: # domain
7404: # action: view, submit, grade
7405: # start: timestamp
7406: # end: timestamp
7407: #
7408: my (%filters)=@_;
7409: unless ($env{'request.course.id'}) { return 'no_course'; }
7410: if ($filters{'url'}) {
7411: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7412: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7413: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7414: }
7415: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7416: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7417: return &log_query($cname,$cdom,'courselog',%filters);
7418: }
7419:
7420: sub userlog_query {
7421: #
7422: # possible filters:
7423: # action: log check role
7424: # start: timestamp
7425: # end: timestamp
7426: #
7427: my ($uname,$udom,%filters)=@_;
7428: return &log_query($uname,$udom,'userlog',%filters);
7429: }
7430:
7431: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7432:
7433: sub auto_run {
7434: my ($cnum,$cdom) = @_;
7435: my $response = 0;
7436: my $settings;
7437: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7438: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7439: $settings = $domconfig{'autoenroll'};
7440: if ($settings->{'run'} eq '1') {
7441: $response = 1;
7442: }
7443: } else {
7444: my $homeserver;
7445: if (&is_course($cdom,$cnum)) {
7446: $homeserver = &homeserver($cnum,$cdom);
7447: } else {
7448: $homeserver = &domain($cdom,'primary');
7449: }
7450: if ($homeserver ne 'no_host') {
7451: $response = &reply('autorun:'.$cdom,$homeserver);
7452: }
7453: }
7454: return $response;
7455: }
7456:
7457: sub auto_get_sections {
7458: my ($cnum,$cdom,$inst_coursecode) = @_;
7459: my $homeserver;
7460: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7461: $homeserver = &homeserver($cnum,$cdom);
7462: }
7463: if (!defined($homeserver)) {
7464: if ($cdom =~ /^$match_domain$/) {
7465: $homeserver = &domain($cdom,'primary');
7466: }
7467: }
7468: my @secs;
7469: if (defined($homeserver)) {
7470: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7471: unless ($response eq 'refused') {
7472: @secs = split(/:/,$response);
7473: }
7474: }
7475: return @secs;
7476: }
7477:
7478: sub auto_new_course {
7479: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7480: my $homeserver = &homeserver($cnum,$cdom);
7481: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7482: return $response;
7483: }
7484:
7485: sub auto_validate_courseID {
7486: my ($cnum,$cdom,$inst_course_id) = @_;
7487: my $homeserver = &homeserver($cnum,$cdom);
7488: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7489: return $response;
7490: }
7491:
7492: sub auto_validate_instcode {
7493: my ($cnum,$cdom,$instcode,$owner) = @_;
7494: my ($homeserver,$response);
7495: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7496: $homeserver = &homeserver($cnum,$cdom);
7497: }
7498: if (!defined($homeserver)) {
7499: if ($cdom =~ /^$match_domain$/) {
7500: $homeserver = &domain($cdom,'primary');
7501: }
7502: }
7503: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7504: &escape($instcode).':'.&escape($owner),$homeserver));
7505: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7506: return ($outcome,$description,$defaultcredits);
7507: }
7508:
7509: sub auto_create_password {
7510: my ($cnum,$cdom,$authparam,$udom) = @_;
7511: my ($homeserver,$response);
7512: my $create_passwd = 0;
7513: my $authchk = '';
7514: if ($udom =~ /^$match_domain$/) {
7515: $homeserver = &domain($udom,'primary');
7516: }
7517: if ($homeserver eq '') {
7518: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7519: $homeserver = &homeserver($cnum,$cdom);
7520: }
7521: }
7522: if ($homeserver eq '') {
7523: $authchk = 'nodomain';
7524: } else {
7525: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7526: if ($response eq 'refused') {
7527: $authchk = 'refused';
7528: } else {
7529: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7530: }
7531: }
7532: return ($authparam,$create_passwd,$authchk);
7533: }
7534:
7535: sub auto_photo_permission {
7536: my ($cnum,$cdom,$students) = @_;
7537: my $homeserver = &homeserver($cnum,$cdom);
7538: my ($outcome,$perm_reqd,$conditions) =
7539: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7540: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7541: return (undef,undef);
7542: }
7543: return ($outcome,$perm_reqd,$conditions);
7544: }
7545:
7546: sub auto_checkphotos {
7547: my ($uname,$udom,$pid) = @_;
7548: my $homeserver = &homeserver($uname,$udom);
7549: my ($result,$resulttype);
7550: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7551: &escape($uname).':'.&escape($pid),
7552: $homeserver));
7553: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7554: return (undef,undef);
7555: }
7556: if ($outcome) {
7557: ($result,$resulttype) = split(/:/,$outcome);
7558: }
7559: return ($result,$resulttype);
7560: }
7561:
7562: sub auto_photochoice {
7563: my ($cnum,$cdom) = @_;
7564: my $homeserver = &homeserver($cnum,$cdom);
7565: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7566: &escape($cdom),
7567: $homeserver)));
7568: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7569: return (undef,undef);
7570: }
7571: return ($update,$comment);
7572: }
7573:
7574: sub auto_photoupdate {
7575: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7576: my $homeserver = &homeserver($cnum,$dom);
7577: my $host=&hostname($homeserver);
7578: my $cmd = '';
7579: my $maxtries = 1;
7580: foreach my $affiliate (keys(%{$affiliatesref})) {
7581: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7582: }
7583: $cmd =~ s/%%$//;
7584: $cmd = &escape($cmd);
7585: my $query = 'institutionalphotos';
7586: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7587: unless ($queryid=~/^\Q$host\E\_/) {
7588: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7589: return 'error: '.$queryid;
7590: }
7591: my $reply = &get_query_reply($queryid);
7592: my $tries = 1;
7593: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7594: $reply = &get_query_reply($queryid);
7595: $tries ++;
7596: }
7597: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7598: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7599: } else {
7600: my @responses = split(/:/,$reply);
7601: my $outcome = shift(@responses);
7602: foreach my $item (@responses) {
7603: my ($key,$value) = split(/=/,$item);
7604: $$photo{$key} = $value;
7605: }
7606: return $outcome;
7607: }
7608: return 'error';
7609: }
7610:
7611: sub auto_instcode_format {
7612: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7613: $cat_order) = @_;
7614: my $courses = '';
7615: my @homeservers;
7616: if ($caller eq 'global') {
7617: my %servers = &get_servers($codedom,'library');
7618: foreach my $tryserver (keys(%servers)) {
7619: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7620: push(@homeservers,$tryserver);
7621: }
7622: }
7623: } elsif ($caller eq 'requests') {
7624: if ($codedom =~ /^$match_domain$/) {
7625: my $chome = &domain($codedom,'primary');
7626: unless ($chome eq 'no_host') {
7627: push(@homeservers,$chome);
7628: }
7629: }
7630: } else {
7631: push(@homeservers,&homeserver($caller,$codedom));
7632: }
7633: foreach my $code (keys(%{$instcodes})) {
7634: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7635: }
7636: chop($courses);
7637: my $ok_response = 0;
7638: my $response;
7639: while (@homeservers > 0 && $ok_response == 0) {
7640: my $server = shift(@homeservers);
7641: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7642: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7643: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7644: split(/:/,$response);
7645: %{$codes} = (%{$codes},&str2hash($codes_str));
7646: push(@{$codetitles},&str2array($codetitles_str));
7647: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7648: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7649: $ok_response = 1;
7650: }
7651: }
7652: if ($ok_response) {
7653: return 'ok';
7654: } else {
7655: return $response;
7656: }
7657: }
7658:
7659: sub auto_instcode_defaults {
7660: my ($domain,$returnhash,$code_order) = @_;
7661: my @homeservers;
7662:
7663: my %servers = &get_servers($domain,'library');
7664: foreach my $tryserver (keys(%servers)) {
7665: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7666: push(@homeservers,$tryserver);
7667: }
7668: }
7669:
7670: my $response;
7671: foreach my $server (@homeservers) {
7672: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7673: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7674:
7675: foreach my $pair (split(/\&/,$response)) {
7676: my ($name,$value)=split(/\=/,$pair);
7677: if ($name eq 'code_order') {
7678: @{$code_order} = split(/\&/,&unescape($value));
7679: } else {
7680: $returnhash->{&unescape($name)}=&unescape($value);
7681: }
7682: }
7683: return 'ok';
7684: }
7685:
7686: return $response;
7687: }
7688:
7689: sub auto_possible_instcodes {
7690: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7691: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7692: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7693: return;
7694: }
7695: my (@homeservers,$uhome);
7696: if (defined(&domain($domain,'primary'))) {
7697: $uhome=&domain($domain,'primary');
7698: push(@homeservers,&domain($domain,'primary'));
7699: } else {
7700: my %servers = &get_servers($domain,'library');
7701: foreach my $tryserver (keys(%servers)) {
7702: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7703: push(@homeservers,$tryserver);
7704: }
7705: }
7706: }
7707: my $response;
7708: foreach my $server (@homeservers) {
7709: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7710: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7711: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7712: split(':',$response);
7713: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7714: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7715: foreach my $item (split('&',$cat_title)) {
7716: my ($name,$value)=split('=',$item);
7717: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7718: }
7719: foreach my $item (split('&',$cat_order)) {
7720: my ($name,$value)=split('=',$item);
7721: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7722: }
7723: return 'ok';
7724: }
7725: return $response;
7726: }
7727:
7728: sub auto_courserequest_checks {
7729: my ($dom) = @_;
7730: my ($homeserver,%validations);
7731: if ($dom =~ /^$match_domain$/) {
7732: $homeserver = &domain($dom,'primary');
7733: }
7734: unless ($homeserver eq 'no_host') {
7735: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7736: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7737: my @items = split(/&/,$response);
7738: foreach my $item (@items) {
7739: my ($key,$value) = split('=',$item);
7740: $validations{&unescape($key)} = &thaw_unescape($value);
7741: }
7742: }
7743: }
7744: return %validations;
7745: }
7746:
7747: sub auto_courserequest_validation {
7748: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7749: my ($homeserver,$response);
7750: if ($dom =~ /^$match_domain$/) {
7751: $homeserver = &domain($dom,'primary');
7752: }
7753: unless ($homeserver eq 'no_host') {
7754:
7755: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7756: ':'.&escape($crstype).':'.&escape($inststatuslist).
7757: ':'.&escape($instcode).':'.&escape($instseclist),
7758: $homeserver));
7759: }
7760: return $response;
7761: }
7762:
7763: sub auto_validate_class_sec {
7764: my ($cdom,$cnum,$owners,$inst_class) = @_;
7765: my $homeserver = &homeserver($cnum,$cdom);
7766: my $ownerlist;
7767: if (ref($owners) eq 'ARRAY') {
7768: $ownerlist = join(',',@{$owners});
7769: } else {
7770: $ownerlist = $owners;
7771: }
7772: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7773: &escape($ownerlist).':'.$cdom,$homeserver);
7774: return $response;
7775: }
7776:
7777: # ------------------------------------------------------- Course Group routines
7778:
7779: sub get_coursegroups {
7780: my ($cdom,$cnum,$group,$namespace) = @_;
7781: return(&dump($namespace,$cdom,$cnum,$group));
7782: }
7783:
7784: sub modify_coursegroup {
7785: my ($cdom,$cnum,$groupsettings) = @_;
7786: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7787: }
7788:
7789: sub toggle_coursegroup_status {
7790: my ($cdom,$cnum,$group,$action) = @_;
7791: my ($from_namespace,$to_namespace);
7792: if ($action eq 'delete') {
7793: $from_namespace = 'coursegroups';
7794: $to_namespace = 'deleted_groups';
7795: } else {
7796: $from_namespace = 'deleted_groups';
7797: $to_namespace = 'coursegroups';
7798: }
7799: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7800: if (my $tmp = &error(%curr_group)) {
7801: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7802: return ('read error',$tmp);
7803: } else {
7804: my %savedsettings = %curr_group;
7805: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7806: my $deloutcome;
7807: if ($result eq 'ok') {
7808: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7809: } else {
7810: return ('write error',$result);
7811: }
7812: if ($deloutcome eq 'ok') {
7813: return 'ok';
7814: } else {
7815: return ('delete error',$deloutcome);
7816: }
7817: }
7818: }
7819:
7820: sub modify_group_roles {
7821: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7822: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7823: my $role = 'gr/'.&escape($userprivs);
7824: my ($uname,$udom) = split(/:/,$user);
7825: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7826: if ($result eq 'ok') {
7827: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7828: }
7829: return $result;
7830: }
7831:
7832: sub modify_coursegroup_membership {
7833: my ($cdom,$cnum,$membership) = @_;
7834: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7835: return $result;
7836: }
7837:
7838: sub get_active_groups {
7839: my ($udom,$uname,$cdom,$cnum) = @_;
7840: my $now = time;
7841: my %groups = ();
7842: foreach my $key (keys(%env)) {
7843: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7844: my ($start,$end) = split(/\./,$env{$key});
7845: if (($end!=0) && ($end<$now)) { next; }
7846: if (($start!=0) && ($start>$now)) { next; }
7847: if ($1 eq $cdom && $2 eq $cnum) {
7848: $groups{$3} = $env{$key} ;
7849: }
7850: }
7851: }
7852: return %groups;
7853: }
7854:
7855: sub get_group_membership {
7856: my ($cdom,$cnum,$group) = @_;
7857: return(&dump('groupmembership',$cdom,$cnum,$group));
7858: }
7859:
7860: sub get_users_groups {
7861: my ($udom,$uname,$courseid) = @_;
7862: my @usersgroups;
7863: my $cachetime=1800;
7864:
7865: my $hashid="$udom:$uname:$courseid";
7866: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7867: if (defined($cached)) {
7868: @usersgroups = split(/:/,$grouplist);
7869: } else {
7870: $grouplist = '';
7871: my $courseurl = &courseid_to_courseurl($courseid);
7872: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7873: my $access_end = $env{'course.'.$courseid.
7874: '.default_enrollment_end_date'};
7875: my $now = time;
7876: foreach my $key (keys(%roleshash)) {
7877: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7878: my $group = $1;
7879: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7880: my $start = $2;
7881: my $end = $1;
7882: if ($start == -1) { next; } # deleted from group
7883: if (($start!=0) && ($start>$now)) { next; }
7884: if (($end!=0) && ($end<$now)) {
7885: if ($access_end && $access_end < $now) {
7886: if ($access_end - $end < 86400) {
7887: push(@usersgroups,$group);
7888: }
7889: }
7890: next;
7891: }
7892: push(@usersgroups,$group);
7893: }
7894: }
7895: }
7896: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7897: $grouplist = join(':',@usersgroups);
7898: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7899: }
7900: return @usersgroups;
7901: }
7902:
7903: sub devalidate_getgroups_cache {
7904: my ($udom,$uname,$cdom,$cnum)=@_;
7905: my $courseid = $cdom.'_'.$cnum;
7906:
7907: my $hashid="$udom:$uname:$courseid";
7908: &devalidate_cache_new('getgroups',$hashid);
7909: }
7910:
7911: # ------------------------------------------------------------------ Plain Text
7912:
7913: sub plaintext {
7914: my ($short,$type,$cid,$forcedefault) = @_;
7915: if ($short =~ m{^cr/}) {
7916: return (split('/',$short))[-1];
7917: }
7918: if (!defined($cid)) {
7919: $cid = $env{'request.course.id'};
7920: }
7921: my %rolenames = (
7922: Course => 'std',
7923: Community => 'alt1',
7924: );
7925: if ($cid ne '') {
7926: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7927: unless ($forcedefault) {
7928: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7929: &Apache::lonlocal::mt_escape(\$roletext);
7930: return &Apache::lonlocal::mt($roletext);
7931: }
7932: }
7933: }
7934: if ((defined($type)) && (defined($rolenames{$type})) &&
7935: (defined($rolenames{$type})) &&
7936: (defined($prp{$short}{$rolenames{$type}}))) {
7937: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7938: } elsif ($cid ne '') {
7939: my $crstype = $env{'course.'.$cid.'.type'};
7940: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7941: (defined($prp{$short}{$rolenames{$crstype}}))) {
7942: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7943: }
7944: }
7945: return &Apache::lonlocal::mt($prp{$short}{'std'});
7946: }
7947:
7948: # ----------------------------------------------------------------- Assign Role
7949:
7950: sub assignrole {
7951: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7952: $context)=@_;
7953: my $mrole;
7954: if ($role =~ /^cr\//) {
7955: my $cwosec=$url;
7956: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7957: unless (&allowed('ccr',$cwosec)) {
7958: my $refused = 1;
7959: if ($context eq 'requestcourses') {
7960: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7961: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7962: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7963: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7964: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7965: if ($crsenv{'internal.courseowner'} eq
7966: $env{'user.name'}.':'.$env{'user.domain'}) {
7967: $refused = '';
7968: }
7969: }
7970: }
7971: }
7972: }
7973: if ($refused) {
7974: &logthis('Refused custom assignrole: '.
7975: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7976: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7977: return 'refused';
7978: }
7979: }
7980: $mrole='cr';
7981: } elsif ($role =~ /^gr\//) {
7982: my $cwogrp=$url;
7983: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7984: unless (&allowed('mdg',$cwogrp)) {
7985: &logthis('Refused group assignrole: '.
7986: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7987: $env{'user.name'}.' at '.$env{'user.domain'});
7988: return 'refused';
7989: }
7990: $mrole='gr';
7991: } else {
7992: my $cwosec=$url;
7993: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7994: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7995: my $refused;
7996: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7997: if (!(&allowed('c'.$role,$url))) {
7998: $refused = 1;
7999: }
8000: } else {
8001: $refused = 1;
8002: }
8003: if ($refused) {
8004: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8005: if (!$selfenroll && $context eq 'course') {
8006: my %crsenv;
8007: if ($role eq 'cc' || $role eq 'co') {
8008: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8009: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8010: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8011: if ($crsenv{'internal.courseowner'} eq
8012: $env{'user.name'}.':'.$env{'user.domain'}) {
8013: $refused = '';
8014: }
8015: }
8016: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8017: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8018: if ($crsenv{'internal.courseowner'} eq
8019: $env{'user.name'}.':'.$env{'user.domain'}) {
8020: $refused = '';
8021: }
8022: }
8023: }
8024: }
8025: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8026: $refused = '';
8027: } elsif ($context eq 'requestcourses') {
8028: my @possroles = ('st','ta','ep','in','cc','co');
8029: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8030: my $wrongcc;
8031: if ($cnum =~ /^$match_community$/) {
8032: $wrongcc = 1 if ($role eq 'cc');
8033: } else {
8034: $wrongcc = 1 if ($role eq 'co');
8035: }
8036: unless ($wrongcc) {
8037: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8038: if ($crsenv{'internal.courseowner'} eq
8039: $env{'user.name'}.':'.$env{'user.domain'}) {
8040: $refused = '';
8041: }
8042: }
8043: }
8044: } elsif ($context eq 'requestauthor') {
8045: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8046: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8047: if ($env{'environment.requestauthor'} eq 'automatic') {
8048: $refused = '';
8049: } else {
8050: my %domdefaults = &get_domain_defaults($udom);
8051: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8052: my $checkbystatus;
8053: if ($env{'user.adv'}) {
8054: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8055: if ($disposition eq 'automatic') {
8056: $refused = '';
8057: } elsif ($disposition eq '') {
8058: $checkbystatus = 1;
8059: }
8060: } else {
8061: $checkbystatus = 1;
8062: }
8063: if ($checkbystatus) {
8064: if ($env{'environment.inststatus'}) {
8065: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8066: foreach my $type (@inststatuses) {
8067: if (($type ne '') &&
8068: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8069: $refused = '';
8070: }
8071: }
8072: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8073: $refused = '';
8074: }
8075: }
8076: }
8077: }
8078: }
8079: }
8080: if ($refused) {
8081: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8082: ' '.$role.' '.$end.' '.$start.' by '.
8083: $env{'user.name'}.' at '.$env{'user.domain'});
8084: return 'refused';
8085: }
8086: }
8087: } elsif ($role eq 'au') {
8088: if ($url ne '/'.$udom.'/') {
8089: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8090: ' to assign author role for '.$uname.':'.$udom.
8091: ' in domain: '.$url.' refused (wrong domain).');
8092: return 'refused';
8093: }
8094: }
8095: $mrole=$role;
8096: }
8097: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8098: "$udom:$uname:$url".'_'."$mrole=$role";
8099: if ($end) { $command.='_'.$end; }
8100: if ($start) {
8101: if ($end) {
8102: $command.='_'.$start;
8103: } else {
8104: $command.='_0_'.$start;
8105: }
8106: }
8107: my $origstart = $start;
8108: my $origend = $end;
8109: my $delflag;
8110: # actually delete
8111: if ($deleteflag) {
8112: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8113: # modify command to delete the role
8114: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8115: "$udom:$uname:$url".'_'."$mrole";
8116: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8117: # set start and finish to negative values for userrolelog
8118: $start=-1;
8119: $end=-1;
8120: $delflag = 1;
8121: }
8122: }
8123: # send command
8124: my $answer=&reply($command,&homeserver($uname,$udom));
8125: # log new user role if status is ok
8126: if ($answer eq 'ok') {
8127: &userrolelog($role,$uname,$udom,$url,$start,$end);
8128: if (($role eq 'cc') || ($role eq 'in') ||
8129: ($role eq 'ep') || ($role eq 'ad') ||
8130: ($role eq 'ta') || ($role eq 'st') ||
8131: ($role=~/^cr/) || ($role eq 'gr') ||
8132: ($role eq 'co')) {
8133: # for course roles, perform group memberships changes triggered by role change.
8134: unless ($role =~ /^gr/) {
8135: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8136: $origstart,$selfenroll,$context);
8137: }
8138: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8139: $selfenroll,$context);
8140: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8141: ($role eq 'au') || ($role eq 'dc')) {
8142: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8143: $context);
8144: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8145: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8146: $context);
8147: }
8148: if ($role eq 'cc') {
8149: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8150: }
8151: }
8152: return $answer;
8153: }
8154:
8155: sub autoupdate_coowners {
8156: my ($url,$end,$start,$uname,$udom) = @_;
8157: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8158: if (($cdom ne '') && ($cnum ne '')) {
8159: my $now = time;
8160: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8161: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8162: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8163: my $instcode = $coursehash{'internal.coursecode'};
8164: if ($instcode ne '') {
8165: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8166: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8167: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8168: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8169: if ($result eq 'valid') {
8170: if ($coursehash{'internal.co-owners'}) {
8171: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8172: push(@newcoowners,$coowner);
8173: }
8174: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8175: push(@newcoowners,$uname.':'.$udom);
8176: }
8177: @newcoowners = sort(@newcoowners);
8178: } else {
8179: push(@newcoowners,$uname.':'.$udom);
8180: }
8181: } else {
8182: if ($coursehash{'internal.co-owners'}) {
8183: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8184: unless ($coowner eq $uname.':'.$udom) {
8185: push(@newcoowners,$coowner);
8186: }
8187: }
8188: unless (@newcoowners > 0) {
8189: $delcoowners = 1;
8190: $coowners = '';
8191: }
8192: }
8193: }
8194: if (@newcoowners || $delcoowners) {
8195: &store_coowners($cdom,$cnum,$coursehash{'home'},
8196: $delcoowners,@newcoowners);
8197: }
8198: }
8199: }
8200: }
8201: }
8202: }
8203: }
8204:
8205: sub store_coowners {
8206: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8207: my $cid = $cdom.'_'.$cnum;
8208: my ($coowners,$delresult,$putresult);
8209: if (@newcoowners) {
8210: $coowners = join(',',@newcoowners);
8211: my %coownershash = (
8212: 'internal.co-owners' => $coowners,
8213: );
8214: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8215: if ($putresult eq 'ok') {
8216: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8217: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8218: }
8219: }
8220: }
8221: if ($delcoowners) {
8222: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8223: if ($delresult eq 'ok') {
8224: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8225: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8226: }
8227: }
8228: }
8229: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8230: my %crsinfo =
8231: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8232: if (ref($crsinfo{$cid}) eq 'HASH') {
8233: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8234: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8235: }
8236: }
8237: }
8238:
8239: # -------------------------------------------------- Modify user authentication
8240: # Overrides without validation
8241:
8242: sub modifyuserauth {
8243: my ($udom,$uname,$umode,$upass)=@_;
8244: my $uhome=&homeserver($uname,$udom);
8245: unless (&allowed('mau',$udom)) { return 'refused'; }
8246: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8247: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8248: ' in domain '.$env{'request.role.domain'});
8249: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8250: &escape($upass),$uhome);
8251: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8252: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8253: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8254: &log($udom,,$uname,$uhome,
8255: 'Authentication changed by '.$env{'user.domain'}.', '.
8256: $env{'user.name'}.', '.$umode.
8257: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8258: unless ($reply eq 'ok') {
8259: &logthis('Authentication mode error: '.$reply);
8260: return 'error: '.$reply;
8261: }
8262: return 'ok';
8263: }
8264:
8265: # --------------------------------------------------------------- Modify a user
8266:
8267: sub modifyuser {
8268: my ($udom, $uname, $uid,
8269: $umode, $upass, $first,
8270: $middle, $last, $gene,
8271: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8272: $udom= &LONCAPA::clean_domain($udom);
8273: $uname=&LONCAPA::clean_username($uname);
8274: my $showcandelete = 'none';
8275: if (ref($candelete) eq 'ARRAY') {
8276: if (@{$candelete} > 0) {
8277: $showcandelete = join(', ',@{$candelete});
8278: }
8279: }
8280: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8281: $umode.', '.$first.', '.$middle.', '.
8282: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8283: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8284: ' desiredhome not specified').
8285: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8286: ' in domain '.$env{'request.role.domain'});
8287: my $uhome=&homeserver($uname,$udom,'true');
8288: my $newuser;
8289: if ($uhome eq 'no_host') {
8290: $newuser = 1;
8291: }
8292: # ----------------------------------------------------------------- Create User
8293: if (($uhome eq 'no_host') &&
8294: (($umode && $upass) || ($umode eq 'localauth'))) {
8295: my $unhome='';
8296: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8297: $unhome = $desiredhome;
8298: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8299: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8300: } else { # load balancing routine for determining $unhome
8301: my $loadm=10000000;
8302: my %servers = &get_servers($udom,'library');
8303: foreach my $tryserver (keys(%servers)) {
8304: my $answer=reply('load',$tryserver);
8305: if (($answer=~/\d+/) && ($answer<$loadm)) {
8306: $loadm=$answer;
8307: $unhome=$tryserver;
8308: }
8309: }
8310: }
8311: if (($unhome eq '') || ($unhome eq 'no_host')) {
8312: return 'error: unable to find a home server for '.$uname.
8313: ' in domain '.$udom;
8314: }
8315: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8316: &escape($upass),$unhome);
8317: unless ($reply eq 'ok') {
8318: return 'error: '.$reply;
8319: }
8320: $uhome=&homeserver($uname,$udom,'true');
8321: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8322: return 'error: unable verify users home machine.';
8323: }
8324: } # End of creation of new user
8325: # ---------------------------------------------------------------------- Add ID
8326: if ($uid) {
8327: $uid=~tr/A-Z/a-z/;
8328: my %uidhash=&idrget($udom,$uname);
8329: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8330: && (!$forceid)) {
8331: unless ($uid eq $uidhash{$uname}) {
8332: return 'error: user id "'.$uid.'" does not match '.
8333: 'current user id "'.$uidhash{$uname}.'".';
8334: }
8335: } else {
8336: &idput($udom,($uname => $uid));
8337: }
8338: }
8339: # -------------------------------------------------------------- Add names, etc
8340: my @tmp=&get('environment',
8341: ['firstname','middlename','lastname','generation','id',
8342: 'permanentemail','inststatus'],
8343: $udom,$uname);
8344: my (%names,%oldnames);
8345: if ($tmp[0] =~ m/^error:.*/) {
8346: %names=();
8347: } else {
8348: %names = @tmp;
8349: %oldnames = %names;
8350: }
8351: #
8352: # If name, email and/or uid are blank (e.g., because an uploaded file
8353: # of users did not contain them), do not overwrite existing values
8354: # unless field is in $candelete array ref.
8355: #
8356:
8357: my @fields = ('firstname','middlename','lastname','generation',
8358: 'permanentemail','id');
8359: my %newvalues;
8360: if (ref($candelete) eq 'ARRAY') {
8361: foreach my $field (@fields) {
8362: if (grep(/^\Q$field\E$/,@{$candelete})) {
8363: if ($field eq 'firstname') {
8364: $names{$field} = $first;
8365: } elsif ($field eq 'middlename') {
8366: $names{$field} = $middle;
8367: } elsif ($field eq 'lastname') {
8368: $names{$field} = $last;
8369: } elsif ($field eq 'generation') {
8370: $names{$field} = $gene;
8371: } elsif ($field eq 'permanentemail') {
8372: $names{$field} = $email;
8373: } elsif ($field eq 'id') {
8374: $names{$field} = $uid;
8375: }
8376: }
8377: }
8378: }
8379: if ($first) { $names{'firstname'} = $first; }
8380: if (defined($middle)) { $names{'middlename'} = $middle; }
8381: if ($last) { $names{'lastname'} = $last; }
8382: if (defined($gene)) { $names{'generation'} = $gene; }
8383: if ($email) {
8384: $email=~s/[^\w\@\.\-\,]//gs;
8385: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8386: }
8387: if ($uid) { $names{'id'} = $uid; }
8388: if (defined($inststatus)) {
8389: $names{'inststatus'} = '';
8390: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8391: if (ref($usertypes) eq 'HASH') {
8392: my @okstatuses;
8393: foreach my $item (split(/:/,$inststatus)) {
8394: if (defined($usertypes->{$item})) {
8395: push(@okstatuses,$item);
8396: }
8397: }
8398: if (@okstatuses) {
8399: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8400: }
8401: }
8402: }
8403: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8404: $umode.', '.$first.', '.$middle.', '.
8405: $last.', '.$gene.', '.$email.', '.$inststatus;
8406: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8407: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8408: } else {
8409: $logmsg .= ' during self creation';
8410: }
8411: my $changed;
8412: if ($newuser) {
8413: $changed = 1;
8414: } else {
8415: foreach my $field (@fields) {
8416: if ($names{$field} ne $oldnames{$field}) {
8417: $changed = 1;
8418: last;
8419: }
8420: }
8421: }
8422: unless ($changed) {
8423: $logmsg = 'No changes in user information needed for: '.$logmsg;
8424: &logthis($logmsg);
8425: return 'ok';
8426: }
8427: my $reply = &put('environment', \%names, $udom,$uname);
8428: if ($reply ne 'ok') {
8429: return 'error: '.$reply;
8430: }
8431: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8432: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8433: }
8434: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8435: &devalidate_cache_new('namescache',$uname.':'.$udom);
8436: $logmsg = 'Success modifying user '.$logmsg;
8437: &logthis($logmsg);
8438: return 'ok';
8439: }
8440:
8441: # -------------------------------------------------------------- Modify student
8442:
8443: sub modifystudent {
8444: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8445: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8446: $selfenroll,$context,$inststatus,$credits)=@_;
8447: if (!$cid) {
8448: unless ($cid=$env{'request.course.id'}) {
8449: return 'not_in_class';
8450: }
8451: }
8452: # --------------------------------------------------------------- Make the user
8453: my $reply=&modifyuser
8454: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8455: $desiredhome,$email,$inststatus);
8456: unless ($reply eq 'ok') { return $reply; }
8457: # This will cause &modify_student_enrollment to get the uid from the
8458: # students environment
8459: $uid = undef if (!$forceid);
8460: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8461: $gene,$usec,$end,$start,$type,$locktype,
8462: $cid,$selfenroll,$context,$credits);
8463: return $reply;
8464: }
8465:
8466: sub modify_student_enrollment {
8467: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8468: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8469: my ($cdom,$cnum,$chome);
8470: if (!$cid) {
8471: unless ($cid=$env{'request.course.id'}) {
8472: return 'not_in_class';
8473: }
8474: $cdom=$env{'course.'.$cid.'.domain'};
8475: $cnum=$env{'course.'.$cid.'.num'};
8476: } else {
8477: ($cdom,$cnum)=split(/_/,$cid);
8478: }
8479: $chome=$env{'course.'.$cid.'.home'};
8480: if (!$chome) {
8481: $chome=&homeserver($cnum,$cdom);
8482: }
8483: if (!$chome) { return 'unknown_course'; }
8484: # Make sure the user exists
8485: my $uhome=&homeserver($uname,$udom);
8486: if (($uhome eq '') || ($uhome eq 'no_host')) {
8487: return 'error: no such user';
8488: }
8489: # Get student data if we were not given enough information
8490: if (!defined($first) || $first eq '' ||
8491: !defined($last) || $last eq '' ||
8492: !defined($uid) || $uid eq '' ||
8493: !defined($middle) || $middle eq '' ||
8494: !defined($gene) || $gene eq '') {
8495: # They did not supply us with enough data to enroll the student, so
8496: # we need to pick up more information.
8497: my %tmp = &get('environment',
8498: ['firstname','middlename','lastname', 'generation','id']
8499: ,$udom,$uname);
8500:
8501: #foreach my $key (keys(%tmp)) {
8502: # &logthis("key $key = ".$tmp{$key});
8503: #}
8504: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8505: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8506: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8507: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8508: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8509: }
8510: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8511: my $user = "$uname:$udom";
8512: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8513: my $reply=cput('classlist',
8514: {$user =>
8515: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8516: $cdom,$cnum);
8517: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8518: &devalidate_getsection_cache($udom,$uname,$cid);
8519: } else {
8520: return 'error: '.$reply;
8521: }
8522: # Add student role to user
8523: my $uurl='/'.$cid;
8524: $uurl=~s/\_/\//g;
8525: if ($usec) {
8526: $uurl.='/'.$usec;
8527: }
8528: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8529: $selfenroll,$context);
8530: if ($result ne 'ok') {
8531: if ($old_entry{$user} ne '') {
8532: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8533: } else {
8534: $reply = &del('classlist',[$user],$cdom,$cnum);
8535: }
8536: }
8537: return $result;
8538: }
8539:
8540: sub format_name {
8541: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8542: my $name;
8543: if ($first ne 'lastname') {
8544: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8545: } else {
8546: if ($lastname=~/\S/) {
8547: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8548: $name=~s/\s+,/,/;
8549: } else {
8550: $name.= $firstname.' '.$middlename.' '.$generation;
8551: }
8552: }
8553: $name=~s/^\s+//;
8554: $name=~s/\s+$//;
8555: $name=~s/\s+/ /g;
8556: return $name;
8557: }
8558:
8559: # ------------------------------------------------- Write to course preferences
8560:
8561: sub writecoursepref {
8562: my ($courseid,%prefs)=@_;
8563: $courseid=~s/^\///;
8564: $courseid=~s/\_/\//g;
8565: my ($cdomain,$cnum)=split(/\//,$courseid);
8566: my $chome=homeserver($cnum,$cdomain);
8567: if (($chome eq '') || ($chome eq 'no_host')) {
8568: return 'error: no such course';
8569: }
8570: my $cstring='';
8571: foreach my $pref (keys(%prefs)) {
8572: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8573: }
8574: $cstring=~s/\&$//;
8575: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8576: }
8577:
8578: # ---------------------------------------------------------- Make/modify course
8579:
8580: sub createcourse {
8581: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8582: $course_owner,$crstype,$cnum,$context,$category)=@_;
8583: $url=&declutter($url);
8584: my $cid='';
8585: if ($context eq 'requestcourses') {
8586: my $can_create = 0;
8587: my ($ownername,$ownerdom) = split(':',$course_owner);
8588: if ($udom eq $ownerdom) {
8589: if (&usertools_access($ownername,$ownerdom,$category,undef,
8590: $context)) {
8591: $can_create = 1;
8592: }
8593: } else {
8594: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8595: $category);
8596: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8597: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8598: if (@curr > 0) {
8599: my @options = qw(approval validate autolimit);
8600: my $optregex = join('|',@options);
8601: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8602: $can_create = 1;
8603: }
8604: }
8605: }
8606: }
8607: if ($can_create) {
8608: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8609: unless (&allowed('ccc',$udom)) {
8610: return 'refused';
8611: }
8612: }
8613: } else {
8614: return 'refused';
8615: }
8616: } elsif (!&allowed('ccc',$udom)) {
8617: return 'refused';
8618: }
8619: # --------------------------------------------------------------- Get Unique ID
8620: my $uname;
8621: if ($cnum =~ /^$match_courseid$/) {
8622: my $chome=&homeserver($cnum,$udom,'true');
8623: if (($chome eq '') || ($chome eq 'no_host')) {
8624: $uname = $cnum;
8625: } else {
8626: $uname = &generate_coursenum($udom,$crstype);
8627: }
8628: } else {
8629: $uname = &generate_coursenum($udom,$crstype);
8630: }
8631: return $uname if ($uname =~ /^error/);
8632: # -------------------------------------------------- Check supplied server name
8633: if (!defined($course_server)) {
8634: if (defined(&domain($udom,'primary'))) {
8635: $course_server = &domain($udom,'primary');
8636: } else {
8637: $course_server = $env{'user.home'};
8638: }
8639: }
8640: my %host_servers =
8641: &Apache::lonnet::get_servers($udom,'library');
8642: unless ($host_servers{$course_server}) {
8643: return 'error: invalid home server for course: '.$course_server;
8644: }
8645: # ------------------------------------------------------------- Make the course
8646: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8647: $course_server);
8648: unless ($reply eq 'ok') { return 'error: '.$reply; }
8649: my $uhome=&homeserver($uname,$udom,'true');
8650: if (($uhome eq '') || ($uhome eq 'no_host')) {
8651: return 'error: no such course';
8652: }
8653: # ----------------------------------------------------------------- Course made
8654: # log existence
8655: my $now = time;
8656: my $newcourse = {
8657: $udom.'_'.$uname => {
8658: description => $description,
8659: inst_code => $inst_code,
8660: owner => $course_owner,
8661: type => $crstype,
8662: creator => $env{'user.name'}.':'.
8663: $env{'user.domain'},
8664: created => $now,
8665: context => $context,
8666: },
8667: };
8668: &courseidput($udom,$newcourse,$uhome,'notime');
8669: # set toplevel url
8670: my $topurl=$url;
8671: unless ($nonstandard) {
8672: # ------------------------------------------ For standard courses, make top url
8673: my $mapurl=&clutter($url);
8674: if ($mapurl eq '/res/') { $mapurl=''; }
8675: $env{'form.initmap'}=(<<ENDINITMAP);
8676: <map>
8677: <resource id="1" type="start"></resource>
8678: <resource id="2" src="$mapurl"></resource>
8679: <resource id="3" type="finish"></resource>
8680: <link index="1" from="1" to="2"></link>
8681: <link index="2" from="2" to="3"></link>
8682: </map>
8683: ENDINITMAP
8684: $topurl=&declutter(
8685: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8686: );
8687: }
8688: # ----------------------------------------------------------- Write preferences
8689: &writecoursepref($udom.'_'.$uname,
8690: ('description' => $description,
8691: 'url' => $topurl,
8692: 'internal.creator' => $env{'user.name'}.':'.
8693: $env{'user.domain'},
8694: 'internal.created' => $now,
8695: 'internal.creationcontext' => $context)
8696: );
8697: return '/'.$udom.'/'.$uname;
8698: }
8699:
8700: # ------------------------------------------------------------------- Create ID
8701: sub generate_coursenum {
8702: my ($udom,$crstype) = @_;
8703: my $domdesc = &domain($udom);
8704: return 'error: invalid domain' if ($domdesc eq '');
8705: my $first;
8706: if ($crstype eq 'Community') {
8707: $first = '0';
8708: } else {
8709: $first = int(1+rand(9));
8710: }
8711: my $uname=$first.
8712: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8713: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8714: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8715: # ----------------------------------------------- Make sure that does not exist
8716: my $uhome=&homeserver($uname,$udom,'true');
8717: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8718: if ($crstype eq 'Community') {
8719: $first = '0';
8720: } else {
8721: $first = int(1+rand(9));
8722: }
8723: $uname=$first.
8724: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8725: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8726: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8727: $uhome=&homeserver($uname,$udom,'true');
8728: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8729: return 'error: unable to generate unique course-ID';
8730: }
8731: }
8732: return $uname;
8733: }
8734:
8735: sub is_course {
8736: my ($cdom, $cnum) = scalar(@_) == 1 ?
8737: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8738:
8739: return unless $cdom and $cnum;
8740:
8741: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8742: '.');
8743:
8744: return unless(exists($courses{$cdom.'_'.$cnum}));
8745: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8746: }
8747:
8748: sub store_userdata {
8749: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8750: my $result;
8751: if ($datakey ne '') {
8752: if (ref($storehash) eq 'HASH') {
8753: if ($udom eq '' || $uname eq '') {
8754: $udom = $env{'user.domain'};
8755: $uname = $env{'user.name'};
8756: }
8757: my $uhome=&homeserver($uname,$udom);
8758: if (($uhome eq '') || ($uhome eq 'no_host')) {
8759: $result = 'error: no_host';
8760: } else {
8761: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8762: $storehash->{'host'} = $perlvar{'lonHostID'};
8763:
8764: my $namevalue='';
8765: foreach my $key (keys(%{$storehash})) {
8766: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8767: }
8768: $namevalue=~s/\&$//;
8769: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8770: $namevalue,$uhome);
8771: }
8772: } else {
8773: $result = 'error: data to store was not a hash reference';
8774: }
8775: } else {
8776: $result= 'error: invalid requestkey';
8777: }
8778: return $result;
8779: }
8780:
8781: # ---------------------------------------------------------- Assign Custom Role
8782:
8783: sub assigncustomrole {
8784: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8785: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8786: $end,$start,$deleteflag,$selfenroll,$context);
8787: }
8788:
8789: # ----------------------------------------------------------------- Revoke Role
8790:
8791: sub revokerole {
8792: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8793: my $now=time;
8794: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8795: }
8796:
8797: # ---------------------------------------------------------- Revoke Custom Role
8798:
8799: sub revokecustomrole {
8800: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8801: my $now=time;
8802: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8803: $deleteflag,$selfenroll,$context);
8804: }
8805:
8806: # ------------------------------------------------------------ Disk usage
8807: sub diskusage {
8808: my ($udom,$uname,$directorypath,$getpropath)=@_;
8809: $directorypath =~ s/\/$//;
8810: my $listing=&reply('du2:'.&escape($directorypath).':'
8811: .&escape($getpropath).':'.&escape($uname).':'
8812: .&escape($udom),homeserver($uname,$udom));
8813: if ($listing eq 'unknown_cmd') {
8814: if ($getpropath) {
8815: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8816: }
8817: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8818: }
8819: return $listing;
8820: }
8821:
8822: sub is_locked {
8823: my ($file_name, $domain, $user, $which) = @_;
8824: my @check;
8825: my $is_locked;
8826: push (@check,$file_name);
8827: my %locked = &get('file_permissions',\@check,
8828: $env{'user.domain'},$env{'user.name'});
8829: my ($tmp)=keys(%locked);
8830: if ($tmp=~/^error:/) { undef(%locked); }
8831:
8832: if (ref($locked{$file_name}) eq 'ARRAY') {
8833: $is_locked = 'false';
8834: foreach my $entry (@{$locked{$file_name}}) {
8835: if (ref($entry) eq 'ARRAY') {
8836: $is_locked = 'true';
8837: if (ref($which) eq 'ARRAY') {
8838: push(@{$which},$entry);
8839: } else {
8840: last;
8841: }
8842: }
8843: }
8844: } else {
8845: $is_locked = 'false';
8846: }
8847: return $is_locked;
8848: }
8849:
8850: sub declutter_portfile {
8851: my ($file) = @_;
8852: $file =~ s{^(/portfolio/|portfolio/)}{/};
8853: return $file;
8854: }
8855:
8856: # ------------------------------------------------------------- Mark as Read Only
8857:
8858: sub mark_as_readonly {
8859: my ($domain,$user,$files,$what) = @_;
8860: my %current_permissions = &dump('file_permissions',$domain,$user);
8861: my ($tmp)=keys(%current_permissions);
8862: if ($tmp=~/^error:/) { undef(%current_permissions); }
8863: foreach my $file (@{$files}) {
8864: $file = &declutter_portfile($file);
8865: push(@{$current_permissions{$file}},$what);
8866: }
8867: &put('file_permissions',\%current_permissions,$domain,$user);
8868: return;
8869: }
8870:
8871: # ------------------------------------------------------------Save Selected Files
8872:
8873: sub save_selected_files {
8874: my ($user, $path, @files) = @_;
8875: my $filename = $user."savedfiles";
8876: my @other_files = &files_not_in_path($user, $path);
8877: open (OUT, '>'.$tmpdir.$filename);
8878: foreach my $file (@files) {
8879: print (OUT $env{'form.currentpath'}.$file."\n");
8880: }
8881: foreach my $file (@other_files) {
8882: print (OUT $file."\n");
8883: }
8884: close (OUT);
8885: return 'ok';
8886: }
8887:
8888: sub clear_selected_files {
8889: my ($user) = @_;
8890: my $filename = $user."savedfiles";
8891: open (OUT, '>'.LONCAPA::tempdir().$filename);
8892: print (OUT undef);
8893: close (OUT);
8894: return ("ok");
8895: }
8896:
8897: sub files_in_path {
8898: my ($user, $path) = @_;
8899: my $filename = $user."savedfiles";
8900: my %return_files;
8901: open (IN, '<'.LONCAPA::tempdir().$filename);
8902: while (my $line_in = <IN>) {
8903: chomp ($line_in);
8904: my @paths_and_file = split (m!/!, $line_in);
8905: my $file_part = pop (@paths_and_file);
8906: my $path_part = join ('/', @paths_and_file);
8907: $path_part.='/';
8908: my $path_and_file = $path_part.$file_part;
8909: if ($path_part eq $path) {
8910: $return_files{$file_part}= 'selected';
8911: }
8912: }
8913: close (IN);
8914: return (\%return_files);
8915: }
8916:
8917: # called in portfolio select mode, to show files selected NOT in current directory
8918: sub files_not_in_path {
8919: my ($user, $path) = @_;
8920: my $filename = $user."savedfiles";
8921: my @return_files;
8922: my $path_part;
8923: open(IN, '<'.LONCAPA::.$filename);
8924: while (my $line = <IN>) {
8925: #ok, I know it's clunky, but I want it to work
8926: my @paths_and_file = split(m|/|, $line);
8927: my $file_part = pop(@paths_and_file);
8928: chomp($file_part);
8929: my $path_part = join('/', @paths_and_file);
8930: $path_part .= '/';
8931: my $path_and_file = $path_part.$file_part;
8932: if ($path_part ne $path) {
8933: push(@return_files, ($path_and_file));
8934: }
8935: }
8936: close(OUT);
8937: return (@return_files);
8938: }
8939:
8940: #----------------------------------------------Get portfolio file permissions
8941:
8942: sub get_portfile_permissions {
8943: my ($domain,$user) = @_;
8944: my %current_permissions = &dump('file_permissions',$domain,$user);
8945: my ($tmp)=keys(%current_permissions);
8946: if ($tmp=~/^error:/) { undef(%current_permissions); }
8947: return \%current_permissions;
8948: }
8949:
8950: #---------------------------------------------Get portfolio file access controls
8951:
8952: sub get_access_controls {
8953: my ($current_permissions,$group,$file) = @_;
8954: my %access;
8955: my $real_file = $file;
8956: $file =~ s/\.meta$//;
8957: if (defined($file)) {
8958: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8959: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8960: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8961: }
8962: }
8963: } else {
8964: foreach my $key (keys(%{$current_permissions})) {
8965: if ($key =~ /\0accesscontrol$/) {
8966: if (defined($group)) {
8967: if ($key !~ m-^\Q$group\E/-) {
8968: next;
8969: }
8970: }
8971: my ($fullpath) = split(/\0/,$key);
8972: if (ref($$current_permissions{$key}) eq 'HASH') {
8973: foreach my $control (keys(%{$$current_permissions{$key}})) {
8974: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8975: }
8976: }
8977: }
8978: }
8979: }
8980: return %access;
8981: }
8982:
8983: sub modify_access_controls {
8984: my ($file_name,$changes,$domain,$user)=@_;
8985: my ($outcome,$deloutcome);
8986: my %store_permissions;
8987: my %new_values;
8988: my %new_control;
8989: my %translation;
8990: my @deletions = ();
8991: my $now = time;
8992: if (exists($$changes{'activate'})) {
8993: if (ref($$changes{'activate'}) eq 'HASH') {
8994: my @newitems = sort(keys(%{$$changes{'activate'}}));
8995: my $numnew = scalar(@newitems);
8996: for (my $i=0; $i<$numnew; $i++) {
8997: my $newkey = $newitems[$i];
8998: my $newid = &Apache::loncommon::get_cgi_id();
8999: if ($newkey =~ /^\d+:/) {
9000: $newkey =~ s/^(\d+)/$newid/;
9001: $translation{$1} = $newid;
9002: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9003: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9004: $translation{$1} = $newid;
9005: }
9006: $new_values{$file_name."\0".$newkey} =
9007: $$changes{'activate'}{$newitems[$i]};
9008: $new_control{$newkey} = $now;
9009: }
9010: }
9011: }
9012: my %todelete;
9013: my %changed_items;
9014: foreach my $action ('delete','update') {
9015: if (exists($$changes{$action})) {
9016: if (ref($$changes{$action}) eq 'HASH') {
9017: foreach my $key (keys(%{$$changes{$action}})) {
9018: my ($itemnum) = ($key =~ /^([^:]+):/);
9019: if ($action eq 'delete') {
9020: $todelete{$itemnum} = 1;
9021: } else {
9022: $changed_items{$itemnum} = $key;
9023: }
9024: }
9025: }
9026: }
9027: }
9028: # get lock on access controls for file.
9029: my $lockhash = {
9030: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9031: ':'.$env{'user.domain'},
9032: };
9033: my $tries = 0;
9034: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9035:
9036: while (($gotlock ne 'ok') && $tries <3) {
9037: $tries ++;
9038: sleep 1;
9039: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9040: }
9041: if ($gotlock eq 'ok') {
9042: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9043: my ($tmp)=keys(%curr_permissions);
9044: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9045: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9046: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9047: if (ref($curr_controls) eq 'HASH') {
9048: foreach my $control_item (keys(%{$curr_controls})) {
9049: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9050: if (defined($todelete{$itemnum})) {
9051: push(@deletions,$file_name."\0".$control_item);
9052: } else {
9053: if (defined($changed_items{$itemnum})) {
9054: $new_control{$changed_items{$itemnum}} = $now;
9055: push(@deletions,$file_name."\0".$control_item);
9056: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9057: } else {
9058: $new_control{$control_item} = $$curr_controls{$control_item};
9059: }
9060: }
9061: }
9062: }
9063: }
9064: my ($group);
9065: if (&is_course($domain,$user)) {
9066: ($group,my $file) = split(/\//,$file_name,2);
9067: }
9068: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9069: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9070: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9071: # remove lock
9072: my @del_lock = ($file_name."\0".'locked_access_records');
9073: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9074: my $sqlresult =
9075: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9076: $group);
9077: } else {
9078: $outcome = "error: could not obtain lockfile\n";
9079: }
9080: return ($outcome,$deloutcome,\%new_values,\%translation);
9081: }
9082:
9083: sub make_public_indefinitely {
9084: my ($requrl) = @_;
9085: my $now = time;
9086: my $action = 'activate';
9087: my $aclnum = 0;
9088: if (&is_portfolio_url($requrl)) {
9089: my (undef,$udom,$unum,$file_name,$group) =
9090: &parse_portfolio_url($requrl);
9091: my $current_perms = &get_portfile_permissions($udom,$unum);
9092: my %access_controls = &get_access_controls($current_perms,
9093: $group,$file_name);
9094: foreach my $key (keys(%{$access_controls{$file_name}})) {
9095: my ($num,$scope,$end,$start) =
9096: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9097: if ($scope eq 'public') {
9098: if ($start <= $now && $end == 0) {
9099: $action = 'none';
9100: } else {
9101: $action = 'update';
9102: $aclnum = $num;
9103: }
9104: last;
9105: }
9106: }
9107: if ($action eq 'none') {
9108: return 'ok';
9109: } else {
9110: my %changes;
9111: my $newend = 0;
9112: my $newstart = $now;
9113: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
9114: $changes{$action}{$newkey} = {
9115: type => 'public',
9116: time => {
9117: start => $newstart,
9118: end => $newend,
9119: },
9120: };
9121: my ($outcome,$deloutcome,$new_values,$translation) =
9122: &modify_access_controls($file_name,\%changes,$udom,$unum);
9123: return $outcome;
9124: }
9125: } else {
9126: return 'invalid';
9127: }
9128: }
9129:
9130: #------------------------------------------------------Get Marked as Read Only
9131:
9132: sub get_marked_as_readonly {
9133: my ($domain,$user,$what,$group) = @_;
9134: my $current_permissions = &get_portfile_permissions($domain,$user);
9135: my @readonly_files;
9136: my $cmp1=$what;
9137: if (ref($what)) { $cmp1=join('',@{$what}) };
9138: while (my ($file_name,$value) = each(%{$current_permissions})) {
9139: if (defined($group)) {
9140: if ($file_name !~ m-^\Q$group\E/-) {
9141: next;
9142: }
9143: }
9144: if (ref($value) eq "ARRAY"){
9145: foreach my $stored_what (@{$value}) {
9146: my $cmp2=$stored_what;
9147: if (ref($stored_what) eq 'ARRAY') {
9148: $cmp2=join('',@{$stored_what});
9149: }
9150: if ($cmp1 eq $cmp2) {
9151: push(@readonly_files, $file_name);
9152: last;
9153: } elsif (!defined($what)) {
9154: push(@readonly_files, $file_name);
9155: last;
9156: }
9157: }
9158: }
9159: }
9160: return @readonly_files;
9161: }
9162: #-----------------------------------------------------------Get Marked as Read Only Hash
9163:
9164: sub get_marked_as_readonly_hash {
9165: my ($current_permissions,$group,$what) = @_;
9166: my %readonly_files;
9167: while (my ($file_name,$value) = each(%{$current_permissions})) {
9168: if (defined($group)) {
9169: if ($file_name !~ m-^\Q$group\E/-) {
9170: next;
9171: }
9172: }
9173: if (ref($value) eq "ARRAY"){
9174: foreach my $stored_what (@{$value}) {
9175: if (ref($stored_what) eq 'ARRAY') {
9176: foreach my $lock_descriptor(@{$stored_what}) {
9177: if ($lock_descriptor eq 'graded') {
9178: $readonly_files{$file_name} = 'graded';
9179: } elsif ($lock_descriptor eq 'handback') {
9180: $readonly_files{$file_name} = 'handback';
9181: } else {
9182: if (!exists($readonly_files{$file_name})) {
9183: $readonly_files{$file_name} = 'locked';
9184: }
9185: }
9186: }
9187: }
9188: }
9189: }
9190: }
9191: return %readonly_files;
9192: }
9193: # ------------------------------------------------------------ Unmark as Read Only
9194:
9195: sub unmark_as_readonly {
9196: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9197: # for portfolio submissions, $what contains [$symb,$crsid]
9198: my ($domain,$user,$what,$file_name,$group) = @_;
9199: $file_name = &declutter_portfile($file_name);
9200: my $symb_crs = $what;
9201: if (ref($what)) { $symb_crs=join('',@$what); }
9202: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9203: my ($tmp)=keys(%current_permissions);
9204: if ($tmp=~/^error:/) { undef(%current_permissions); }
9205: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9206: foreach my $file (@readonly_files) {
9207: my $clean_file = &declutter_portfile($file);
9208: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9209: my $current_locks = $current_permissions{$file};
9210: my @new_locks;
9211: my @del_keys;
9212: if (ref($current_locks) eq "ARRAY"){
9213: foreach my $locker (@{$current_locks}) {
9214: my $compare=$locker;
9215: if (ref($locker) eq 'ARRAY') {
9216: $compare=join('',@{$locker});
9217: if ($compare ne $symb_crs) {
9218: push(@new_locks, $locker);
9219: }
9220: }
9221: }
9222: if (scalar(@new_locks) > 0) {
9223: $current_permissions{$file} = \@new_locks;
9224: } else {
9225: push(@del_keys, $file);
9226: &del('file_permissions',\@del_keys, $domain, $user);
9227: delete($current_permissions{$file});
9228: }
9229: }
9230: }
9231: &put('file_permissions',\%current_permissions,$domain,$user);
9232: return;
9233: }
9234:
9235: # ------------------------------------------------------------ Directory lister
9236:
9237: sub dirlist {
9238: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9239: $uri=~s/^\///;
9240: $uri=~s/\/$//;
9241: my ($udom, $uname);
9242: if ($getuserdir) {
9243: $udom = $userdomain;
9244: $uname = $username;
9245: } else {
9246: (undef,$udom,$uname)=split(/\//,$uri);
9247: if(defined($userdomain)) {
9248: $udom = $userdomain;
9249: }
9250: if(defined($username)) {
9251: $uname = $username;
9252: }
9253: }
9254: my ($dirRoot,$listing,@listing_results);
9255:
9256: $dirRoot = $perlvar{'lonDocRoot'};
9257: if (defined($getpropath)) {
9258: $dirRoot = &propath($udom,$uname);
9259: $dirRoot =~ s/\/$//;
9260: } elsif (defined($getuserdir)) {
9261: my $subdir=$uname.'__';
9262: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9263: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9264: ."/$udom/$subdir/$uname";
9265: } elsif (defined($alternateRoot)) {
9266: $dirRoot = $alternateRoot;
9267: }
9268:
9269: if($udom) {
9270: if($uname) {
9271: my $uhome = &homeserver($uname,$udom);
9272: if ($uhome eq 'no_host') {
9273: return ([],'no_host');
9274: }
9275: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9276: .$getuserdir.':'.&escape($dirRoot)
9277: .':'.&escape($uname).':'.&escape($udom),$uhome);
9278: if ($listing eq 'unknown_cmd') {
9279: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9280: } else {
9281: @listing_results = map { &unescape($_); } split(/:/,$listing);
9282: }
9283: if ($listing eq 'unknown_cmd') {
9284: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9285: @listing_results = split(/:/,$listing);
9286: } else {
9287: @listing_results = map { &unescape($_); } split(/:/,$listing);
9288: }
9289: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9290: ($listing eq 'rejected') || ($listing eq 'refused') ||
9291: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9292: return ([],$listing);
9293: } else {
9294: return (\@listing_results);
9295: }
9296: } elsif(!$alternateRoot) {
9297: my (%allusers,%listerror);
9298: my %servers = &get_servers($udom,'library');
9299: foreach my $tryserver (keys(%servers)) {
9300: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9301: &escape($udom),$tryserver);
9302: if ($listing eq 'unknown_cmd') {
9303: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9304: $udom, $tryserver);
9305: } else {
9306: @listing_results = map { &unescape($_); } split(/:/,$listing);
9307: }
9308: if ($listing eq 'unknown_cmd') {
9309: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9310: $udom, $tryserver);
9311: @listing_results = split(/:/,$listing);
9312: } else {
9313: @listing_results =
9314: map { &unescape($_); } split(/:/,$listing);
9315: }
9316: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9317: ($listing eq 'rejected') || ($listing eq 'refused') ||
9318: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9319: $listerror{$tryserver} = $listing;
9320: } else {
9321: foreach my $line (@listing_results) {
9322: my ($entry) = split(/&/,$line,2);
9323: $allusers{$entry} = 1;
9324: }
9325: }
9326: }
9327: my @alluserslist=();
9328: foreach my $user (sort(keys(%allusers))) {
9329: push(@alluserslist,$user.'&user');
9330: }
9331: return (\@alluserslist);
9332: } else {
9333: return ([],'missing username');
9334: }
9335: } elsif(!defined($getpropath)) {
9336: my $path = $perlvar{'lonDocRoot'}.'/res/';
9337: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9338: return (\@all_domains);
9339: } else {
9340: return ([],'missing domain');
9341: }
9342: }
9343:
9344: # --------------------------------------------- GetFileTimestamp
9345: # This function utilizes dirlist and returns the date stamp for
9346: # when it was last modified. It will also return an error of -1
9347: # if an error occurs
9348:
9349: sub GetFileTimestamp {
9350: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9351: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9352: $studentName = &LONCAPA::clean_username($studentName);
9353: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9354: undef,$getuserdir);
9355: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9356: return -1;
9357: }
9358: if (ref($fileref) eq 'ARRAY') {
9359: my @stats = split('&',$fileref->[0]);
9360: # @stats contains first the filename, then the stat output
9361: return $stats[10]; # so this is 10 instead of 9.
9362: } else {
9363: return -1;
9364: }
9365: }
9366:
9367: sub stat_file {
9368: my ($uri) = @_;
9369: $uri = &clutter_with_no_wrapper($uri);
9370:
9371: my ($udom,$uname,$file);
9372: if ($uri =~ m-^/(uploaded|editupload)/-) {
9373: ($udom,$uname,$file) =
9374: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9375: $file = 'userfiles/'.$file;
9376: }
9377: if ($uri =~ m-^/res/-) {
9378: ($udom,$uname) =
9379: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9380: $file = $uri;
9381: }
9382:
9383: if (!$udom || !$uname || !$file) {
9384: # unable to handle the uri
9385: return ();
9386: }
9387: my $getpropath;
9388: if ($file =~ /^userfiles\//) {
9389: $getpropath = 1;
9390: }
9391: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9392: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9393: return ();
9394: } else {
9395: if (ref($listref) eq 'ARRAY') {
9396: my @stats = split('&',$listref->[0]);
9397: shift(@stats); #filename is first
9398: return @stats;
9399: }
9400: }
9401: return ();
9402: }
9403:
9404: # -------------------------------------------------------- Value of a Condition
9405:
9406: # gets the value of a specific preevaluated condition
9407: # stored in the string $env{user.state.<cid>}
9408: # or looks up a condition reference in the bighash and if if hasn't
9409: # already been evaluated recurses into docondval to get the value of
9410: # the condition, then memoizing it to
9411: # $env{user.state.<cid>.<condition>}
9412: sub directcondval {
9413: my $number=shift;
9414: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9415: &Apache::lonuserstate::evalstate();
9416: }
9417: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9418: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9419: } elsif ($number =~ /^_/) {
9420: my $sub_condition;
9421: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9422: &GDBM_READER(),0640)) {
9423: $sub_condition=$bighash{'conditions'.$number};
9424: untie(%bighash);
9425: }
9426: my $value = &docondval($sub_condition);
9427: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9428: return $value;
9429: }
9430: if ($env{'user.state.'.$env{'request.course.id'}}) {
9431: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9432: } else {
9433: return 2;
9434: }
9435: }
9436:
9437: # get the collection of conditions for this resource
9438: sub condval {
9439: my $condidx=shift;
9440: my $allpathcond='';
9441: foreach my $cond (split(/\|/,$condidx)) {
9442: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9443: $allpathcond.=
9444: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9445: }
9446: }
9447: $allpathcond=~s/\|$//;
9448: return &docondval($allpathcond);
9449: }
9450:
9451: #evaluates an expression of conditions
9452: sub docondval {
9453: my ($allpathcond) = @_;
9454: my $result=0;
9455: if ($env{'request.course.id'}
9456: && defined($allpathcond)) {
9457: my $operand='|';
9458: my @stack;
9459: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9460: if ($chunk eq '(') {
9461: push @stack,($operand,$result);
9462: } elsif ($chunk eq ')') {
9463: my $before=pop @stack;
9464: if (pop @stack eq '&') {
9465: $result=$result>$before?$before:$result;
9466: } else {
9467: $result=$result>$before?$result:$before;
9468: }
9469: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9470: $operand=$chunk;
9471: } else {
9472: my $new=directcondval($chunk);
9473: if ($operand eq '&') {
9474: $result=$result>$new?$new:$result;
9475: } else {
9476: $result=$result>$new?$result:$new;
9477: }
9478: }
9479: }
9480: }
9481: return $result;
9482: }
9483:
9484: # ---------------------------------------------------- Devalidate courseresdata
9485:
9486: sub devalidatecourseresdata {
9487: my ($coursenum,$coursedomain)=@_;
9488: my $hashid=$coursenum.':'.$coursedomain;
9489: &devalidate_cache_new('courseres',$hashid);
9490: }
9491:
9492:
9493: # --------------------------------------------------- Course Resourcedata Query
9494: #
9495: # Parameters:
9496: # $coursenum - Number of the course.
9497: # $coursedomain - Domain at which the course was created.
9498: # Returns:
9499: # A hash of the course parameters along (I think) with timestamps
9500: # and version info.
9501:
9502: sub get_courseresdata {
9503: my ($coursenum,$coursedomain)=@_;
9504: my $coursehom=&homeserver($coursenum,$coursedomain);
9505: my $hashid=$coursenum.':'.$coursedomain;
9506: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9507: my %dumpreply;
9508: unless (defined($cached)) {
9509: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9510: $result=\%dumpreply;
9511: my ($tmp) = keys(%dumpreply);
9512: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9513: &do_cache_new('courseres',$hashid,$result,600);
9514: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9515: return $tmp;
9516: } elsif ($tmp =~ /^(error)/) {
9517: $result=undef;
9518: &do_cache_new('courseres',$hashid,$result,600);
9519: }
9520: }
9521: return $result;
9522: }
9523:
9524: sub devalidateuserresdata {
9525: my ($uname,$udom)=@_;
9526: my $hashid="$udom:$uname";
9527: &devalidate_cache_new('userres',$hashid);
9528: }
9529:
9530: sub get_userresdata {
9531: my ($uname,$udom)=@_;
9532: #most student don\'t have any data set, check if there is some data
9533: if (&EXT_cache_status($udom,$uname)) { return undef; }
9534:
9535: my $hashid="$udom:$uname";
9536: my ($result,$cached)=&is_cached_new('userres',$hashid);
9537: if (!defined($cached)) {
9538: my %resourcedata=&dump('resourcedata',$udom,$uname);
9539: $result=\%resourcedata;
9540: &do_cache_new('userres',$hashid,$result,600);
9541: }
9542: my ($tmp)=keys(%$result);
9543: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9544: return $result;
9545: }
9546: #error 2 occurs when the .db doesn't exist
9547: if ($tmp!~/error: 2 /) {
9548: &logthis("<font color=\"blue\">WARNING:".
9549: " Trying to get resource data for ".
9550: $uname." at ".$udom.": ".
9551: $tmp."</font>");
9552: } elsif ($tmp=~/error: 2 /) {
9553: #&EXT_cache_set($udom,$uname);
9554: &do_cache_new('userres',$hashid,undef,600);
9555: undef($tmp); # not really an error so don't send it back
9556: }
9557: return $tmp;
9558: }
9559: #----------------------------------------------- resdata - return resource data
9560: # Purpose:
9561: # Return resource data for either users or for a course.
9562: # Parameters:
9563: # $name - Course/user name.
9564: # $domain - Name of the domain the user/course is registered on.
9565: # $type - Type of thing $name is (must be 'course' or 'user'
9566: # @which - Array of names of resources desired.
9567: # Returns:
9568: # The value of the first reasource in @which that is found in the
9569: # resource hash.
9570: # Exceptional Conditions:
9571: # If the $type passed in is not valid (not the string 'course' or
9572: # 'user', an undefined reference is returned.
9573: # If none of the resources are found, an undef is returned
9574: sub resdata {
9575: my ($name,$domain,$type,@which)=@_;
9576: my $result;
9577: if ($type eq 'course') {
9578: $result=&get_courseresdata($name,$domain);
9579: } elsif ($type eq 'user') {
9580: $result=&get_userresdata($name,$domain);
9581: }
9582: if (!ref($result)) { return $result; }
9583: foreach my $item (@which) {
9584: if (defined($result->{$item->[0]})) {
9585: return [$result->{$item->[0]},$item->[1]];
9586: }
9587: }
9588: return undef;
9589: }
9590:
9591: #
9592: # EXT resource caching routines
9593: #
9594:
9595: sub clear_EXT_cache_status {
9596: &delenv('cache.EXT.');
9597: }
9598:
9599: sub EXT_cache_status {
9600: my ($target_domain,$target_user) = @_;
9601: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9602: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9603: # We know already the user has no data
9604: return 1;
9605: } else {
9606: return 0;
9607: }
9608: }
9609:
9610: sub EXT_cache_set {
9611: my ($target_domain,$target_user) = @_;
9612: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9613: #&appenv({$cachename => time});
9614: }
9615:
9616: # --------------------------------------------------------- Value of a Variable
9617: sub EXT {
9618:
9619: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9620: unless ($varname) { return ''; }
9621: #get real user name/domain, courseid and symb
9622: my $courseid;
9623: my $publicuser;
9624: if ($symbparm) {
9625: $symbparm=&get_symb_from_alias($symbparm);
9626: }
9627: if (!($uname && $udom)) {
9628: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9629: if (!$symbparm) { $symbparm=$cursymb; }
9630: } else {
9631: $courseid=$env{'request.course.id'};
9632: }
9633: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9634: my $rest;
9635: if (defined($therest[0])) {
9636: $rest=join('.',@therest);
9637: } else {
9638: $rest='';
9639: }
9640:
9641: my $qualifierrest=$qualifier;
9642: if ($rest) { $qualifierrest.='.'.$rest; }
9643: my $spacequalifierrest=$space;
9644: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9645: if ($realm eq 'user') {
9646: # --------------------------------------------------------------- user.resource
9647: if ($space eq 'resource') {
9648: if ( (defined($Apache::lonhomework::parsing_a_problem)
9649: || defined($Apache::lonhomework::parsing_a_task))
9650: &&
9651: ($symbparm eq &symbread()) ) {
9652: # if we are in the middle of processing the resource the
9653: # get the value we are planning on committing
9654: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9655: return $Apache::lonhomework::results{$qualifierrest};
9656: } else {
9657: return $Apache::lonhomework::history{$qualifierrest};
9658: }
9659: } else {
9660: my %restored;
9661: if ($publicuser || $env{'request.state'} eq 'construct') {
9662: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9663: } else {
9664: %restored=&restore($symbparm,$courseid,$udom,$uname);
9665: }
9666: return $restored{$qualifierrest};
9667: }
9668: # ----------------------------------------------------------------- user.access
9669: } elsif ($space eq 'access') {
9670: # FIXME - not supporting calls for a specific user
9671: return &allowed($qualifier,$rest);
9672: # ------------------------------------------ user.preferences, user.environment
9673: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9674: if (($uname eq $env{'user.name'}) &&
9675: ($udom eq $env{'user.domain'})) {
9676: return $env{join('.',('environment',$qualifierrest))};
9677: } else {
9678: my %returnhash;
9679: if (!$publicuser) {
9680: %returnhash=&userenvironment($udom,$uname,
9681: $qualifierrest);
9682: }
9683: return $returnhash{$qualifierrest};
9684: }
9685: # ----------------------------------------------------------------- user.course
9686: } elsif ($space eq 'course') {
9687: # FIXME - not supporting calls for a specific user
9688: return $env{join('.',('request.course',$qualifier))};
9689: # ------------------------------------------------------------------- user.role
9690: } elsif ($space eq 'role') {
9691: # FIXME - not supporting calls for a specific user
9692: my ($role,$where)=split(/\./,$env{'request.role'});
9693: if ($qualifier eq 'value') {
9694: return $role;
9695: } elsif ($qualifier eq 'extent') {
9696: return $where;
9697: }
9698: # ----------------------------------------------------------------- user.domain
9699: } elsif ($space eq 'domain') {
9700: return $udom;
9701: # ------------------------------------------------------------------- user.name
9702: } elsif ($space eq 'name') {
9703: return $uname;
9704: # ---------------------------------------------------- Any other user namespace
9705: } else {
9706: my %reply;
9707: if (!$publicuser) {
9708: %reply=&get($space,[$qualifierrest],$udom,$uname);
9709: }
9710: return $reply{$qualifierrest};
9711: }
9712: } elsif ($realm eq 'query') {
9713: # ---------------------------------------------- pull stuff out of query string
9714: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9715: [$spacequalifierrest]);
9716: return $env{'form.'.$spacequalifierrest};
9717: } elsif ($realm eq 'request') {
9718: # ------------------------------------------------------------- request.browser
9719: if ($space eq 'browser') {
9720: return $env{'browser.'.$qualifier};
9721: # ------------------------------------------------------------ request.filename
9722: } else {
9723: return $env{'request.'.$spacequalifierrest};
9724: }
9725: } elsif ($realm eq 'course') {
9726: # ---------------------------------------------------------- course.description
9727: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9728: } elsif ($realm eq 'resource') {
9729:
9730: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9731: if (!$symbparm) { $symbparm=&symbread(); }
9732: }
9733:
9734: if ($space eq 'title') {
9735: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9736: return &gettitle($symbparm);
9737: }
9738:
9739: if ($space eq 'map') {
9740: my ($map) = &decode_symb($symbparm);
9741: return &symbread($map);
9742: }
9743: if ($space eq 'filename') {
9744: if ($symbparm) {
9745: return &clutter((&decode_symb($symbparm))[2]);
9746: }
9747: return &hreflocation('',$env{'request.filename'});
9748: }
9749:
9750: my ($section, $group, @groups);
9751: my ($courselevelm,$courselevel);
9752: if ($symbparm && defined($courseid) &&
9753: $courseid eq $env{'request.course.id'}) {
9754:
9755: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9756:
9757: # ----------------------------------------------------- Cascading lookup scheme
9758: my $symbp=$symbparm;
9759: my $mapp=&deversion((&decode_symb($symbp))[0]);
9760:
9761: my $symbparm=$symbp.'.'.$spacequalifierrest;
9762: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9763:
9764: if (($env{'user.name'} eq $uname) &&
9765: ($env{'user.domain'} eq $udom)) {
9766: $section=$env{'request.course.sec'};
9767: @groups = split(/:/,$env{'request.course.groups'});
9768: @groups=&sort_course_groups($courseid,@groups);
9769: } else {
9770: if (! defined($usection)) {
9771: $section=&getsection($udom,$uname,$courseid);
9772: } else {
9773: $section = $usection;
9774: }
9775: @groups = &get_users_groups($udom,$uname,$courseid);
9776: }
9777:
9778: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9779: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9780: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9781:
9782: $courselevel=$courseid.'.'.$spacequalifierrest;
9783: my $courselevelr=$courseid.'.'.$symbparm;
9784: $courselevelm=$courseid.'.'.$mapparm;
9785:
9786: # ----------------------------------------------------------- first, check user
9787:
9788: my $userreply=&resdata($uname,$udom,'user',
9789: ([$courselevelr,'resource'],
9790: [$courselevelm,'map' ],
9791: [$courselevel, 'course' ]));
9792: if (defined($userreply)) { return &get_reply($userreply); }
9793:
9794: # ------------------------------------------------ second, check some of course
9795: my $coursereply;
9796: if (@groups > 0) {
9797: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9798: $mapparm,$spacequalifierrest);
9799: if (defined($coursereply)) { return &get_reply($coursereply); }
9800: }
9801:
9802: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9803: $env{'course.'.$courseid.'.domain'},
9804: 'course',
9805: ([$seclevelr, 'resource'],
9806: [$seclevelm, 'map' ],
9807: [$seclevel, 'course' ],
9808: [$courselevelr,'resource']));
9809: if (defined($coursereply)) { return &get_reply($coursereply); }
9810:
9811: # ------------------------------------------------------ third, check map parms
9812: my %parmhash=();
9813: my $thisparm='';
9814: if (tie(%parmhash,'GDBM_File',
9815: $env{'request.course.fn'}.'_parms.db',
9816: &GDBM_READER(),0640)) {
9817: $thisparm=$parmhash{$symbparm};
9818: untie(%parmhash);
9819: }
9820: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9821: }
9822: # ------------------------------------------ fourth, look in resource metadata
9823:
9824: $spacequalifierrest=~s/\./\_/;
9825: my $filename;
9826: if (!$symbparm) { $symbparm=&symbread(); }
9827: if ($symbparm) {
9828: $filename=(&decode_symb($symbparm))[2];
9829: } else {
9830: $filename=$env{'request.filename'};
9831: }
9832: my $metadata=&metadata($filename,$spacequalifierrest);
9833: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9834: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9835: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9836:
9837: # ---------------------------------------------- fourth, look in rest of course
9838: if ($symbparm && defined($courseid) &&
9839: $courseid eq $env{'request.course.id'}) {
9840: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9841: $env{'course.'.$courseid.'.domain'},
9842: 'course',
9843: ([$courselevelm,'map' ],
9844: [$courselevel, 'course']));
9845: if (defined($coursereply)) { return &get_reply($coursereply); }
9846: }
9847: # ------------------------------------------------------------------ Cascade up
9848: unless ($space eq '0') {
9849: my @parts=split(/_/,$space);
9850: my $id=pop(@parts);
9851: my $part=join('_',@parts);
9852: if ($part eq '') { $part='0'; }
9853: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9854: $symbparm,$udom,$uname,$section,1);
9855: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9856: }
9857: if ($recurse) { return undef; }
9858: my $pack_def=&packages_tab_default($filename,$varname);
9859: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9860: # ---------------------------------------------------- Any other user namespace
9861: } elsif ($realm eq 'environment') {
9862: # ----------------------------------------------------------------- environment
9863: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9864: return $env{'environment.'.$spacequalifierrest};
9865: } else {
9866: if ($uname eq 'anonymous' && $udom eq '') {
9867: return '';
9868: }
9869: my %returnhash=&userenvironment($udom,$uname,
9870: $spacequalifierrest);
9871: return $returnhash{$spacequalifierrest};
9872: }
9873: } elsif ($realm eq 'system') {
9874: # ----------------------------------------------------------------- system.time
9875: if ($space eq 'time') {
9876: return time;
9877: }
9878: } elsif ($realm eq 'server') {
9879: # ----------------------------------------------------------------- system.time
9880: if ($space eq 'name') {
9881: return $ENV{'SERVER_NAME'};
9882: }
9883: }
9884: return '';
9885: }
9886:
9887: sub get_reply {
9888: my ($reply_value) = @_;
9889: if (ref($reply_value) eq 'ARRAY') {
9890: if (wantarray) {
9891: return @$reply_value;
9892: }
9893: return $reply_value->[0];
9894: } else {
9895: return $reply_value;
9896: }
9897: }
9898:
9899: sub check_group_parms {
9900: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9901: my @groupitems = ();
9902: my $resultitem;
9903: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9904: foreach my $group (@{$groups}) {
9905: foreach my $level (@levels) {
9906: my $item = $courseid.'.['.$group.'].'.$level->[0];
9907: push(@groupitems,[$item,$level->[1]]);
9908: }
9909: }
9910: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9911: $env{'course.'.$courseid.'.domain'},
9912: 'course',@groupitems);
9913: return $coursereply;
9914: }
9915:
9916: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9917: my ($courseid,@groups) = @_;
9918: @groups = sort(@groups);
9919: return @groups;
9920: }
9921:
9922: sub packages_tab_default {
9923: my ($uri,$varname)=@_;
9924: my (undef,$part,$name)=split(/\./,$varname);
9925:
9926: my (@extension,@specifics,$do_default);
9927: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9928: my ($pack_type,$pack_part)=split(/_/,$package,2);
9929: if ($pack_type eq 'default') {
9930: $do_default=1;
9931: } elsif ($pack_type eq 'extension') {
9932: push(@extension,[$package,$pack_type,$pack_part]);
9933: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9934: # only look at packages defaults for packages that this id is
9935: push(@specifics,[$package,$pack_type,$pack_part]);
9936: }
9937: }
9938: # first look for a package that matches the requested part id
9939: foreach my $package (@specifics) {
9940: my (undef,$pack_type,$pack_part)=@{$package};
9941: next if ($pack_part ne $part);
9942: if (defined($packagetab{"$pack_type&$name&default"})) {
9943: return $packagetab{"$pack_type&$name&default"};
9944: }
9945: }
9946: # look for any possible matching non extension_ package
9947: foreach my $package (@specifics) {
9948: my (undef,$pack_type,$pack_part)=@{$package};
9949: if (defined($packagetab{"$pack_type&$name&default"})) {
9950: return $packagetab{"$pack_type&$name&default"};
9951: }
9952: if ($pack_type eq 'part') { $pack_part='0'; }
9953: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9954: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9955: }
9956: }
9957: # look for any posible extension_ match
9958: foreach my $package (@extension) {
9959: my ($package,$pack_type)=@{$package};
9960: if (defined($packagetab{"$pack_type&$name&default"})) {
9961: return $packagetab{"$pack_type&$name&default"};
9962: }
9963: if (defined($packagetab{$package."&$name&default"})) {
9964: return $packagetab{$package."&$name&default"};
9965: }
9966: }
9967: # look for a global default setting
9968: if ($do_default && defined($packagetab{"default&$name&default"})) {
9969: return $packagetab{"default&$name&default"};
9970: }
9971: return undef;
9972: }
9973:
9974: sub add_prefix_and_part {
9975: my ($prefix,$part)=@_;
9976: my $keyroot;
9977: if (defined($prefix) && $prefix !~ /^__/) {
9978: # prefix that has a part already
9979: $keyroot=$prefix;
9980: } elsif (defined($prefix)) {
9981: # prefix that is missing a part
9982: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9983: } else {
9984: # no prefix at all
9985: if (defined($part)) { $keyroot='_'.$part; }
9986: }
9987: return $keyroot;
9988: }
9989:
9990: # ---------------------------------------------------------------- Get metadata
9991:
9992: my %metaentry;
9993: my %importedpartids;
9994: sub metadata {
9995: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9996: $uri=&declutter($uri);
9997: # if it is a non metadata possible uri return quickly
9998: if (($uri eq '') ||
9999: (($uri =~ m|^/*adm/|) &&
10000: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
10001: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10002: return undef;
10003: }
10004: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
10005: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10006: return undef;
10007: }
10008: my $filename=$uri;
10009: $uri=~s/\.meta$//;
10010: #
10011: # Is the metadata already cached?
10012: # Look at timestamp of caching
10013: # Everything is cached by the main uri, libraries are never directly cached
10014: #
10015: if (!defined($liburi)) {
10016: my ($result,$cached)=&is_cached_new('meta',$uri);
10017: if (defined($cached)) { return $result->{':'.$what}; }
10018: }
10019: {
10020: # Imported parts would go here
10021: my %importedids=();
10022: my @origfileimportpartids=();
10023: my $importedparts=0;
10024: #
10025: # Is this a recursive call for a library?
10026: #
10027: # if (! exists($metacache{$uri})) {
10028: # $metacache{$uri}={};
10029: # }
10030: my $cachetime = 60*60;
10031: if ($liburi) {
10032: $liburi=&declutter($liburi);
10033: $filename=$liburi;
10034: } else {
10035: &devalidate_cache_new('meta',$uri);
10036: undef(%metaentry);
10037: }
10038: my %metathesekeys=();
10039: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10040: my $metastring;
10041: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10042: my $which = &hreflocation('','/'.($liburi || $uri));
10043: $metastring =
10044: &Apache::lonnet::ssi_body($which,
10045: ('grade_target' => 'meta'));
10046: $cachetime = 1; # only want this cached in the child not long term
10047: } elsif (($uri !~ m -^(editupload)/-) &&
10048: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10049: my $file=&filelocation('',&clutter($filename));
10050: #push(@{$metaentry{$uri.'.file'}},$file);
10051: $metastring=&getfile($file);
10052: }
10053: my $parser=HTML::LCParser->new(\$metastring);
10054: my $token;
10055: undef %metathesekeys;
10056: while ($token=$parser->get_token) {
10057: if ($token->[0] eq 'S') {
10058: if (defined($token->[2]->{'package'})) {
10059: #
10060: # This is a package - get package info
10061: #
10062: my $package=$token->[2]->{'package'};
10063: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10064: if (defined($token->[2]->{'id'})) {
10065: $keyroot.='_'.$token->[2]->{'id'};
10066: }
10067: if ($metaentry{':packages'}) {
10068: $metaentry{':packages'}.=','.$package.$keyroot;
10069: } else {
10070: $metaentry{':packages'}=$package.$keyroot;
10071: }
10072: foreach my $pack_entry (keys(%packagetab)) {
10073: my $part=$keyroot;
10074: $part=~s/^\_//;
10075: if ($pack_entry=~/^\Q$package\E\&/ ||
10076: $pack_entry=~/^\Q$package\E_0\&/) {
10077: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10078: # ignore package.tab specified default values
10079: # here &package_tab_default() will fetch those
10080: if ($subp eq 'default') { next; }
10081: my $value=$packagetab{$pack_entry};
10082: my $unikey;
10083: if ($pack =~ /_0$/) {
10084: $unikey='parameter_0_'.$name;
10085: $part=0;
10086: } else {
10087: $unikey='parameter'.$keyroot.'_'.$name;
10088: }
10089: if ($subp eq 'display') {
10090: $value.=' [Part: '.$part.']';
10091: }
10092: $metaentry{':'.$unikey.'.part'}=$part;
10093: $metathesekeys{$unikey}=1;
10094: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10095: $metaentry{':'.$unikey.'.'.$subp}=$value;
10096: }
10097: if (defined($metaentry{':'.$unikey.'.default'})) {
10098: $metaentry{':'.$unikey}=
10099: $metaentry{':'.$unikey.'.default'};
10100: }
10101: }
10102: }
10103: } else {
10104: #
10105: # This is not a package - some other kind of start tag
10106: #
10107: my $entry=$token->[1];
10108: my $unikey='';
10109:
10110: if ($entry eq 'import') {
10111: #
10112: # Importing a library here
10113: #
10114: my $location=$parser->get_text('/import');
10115: my $dir=$filename;
10116: $dir=~s|[^/]*$||;
10117: $location=&filelocation($dir,$location);
10118:
10119: my $importmode=$token->[2]->{'importmode'};
10120: if ($importmode eq 'problem') {
10121: # Import as problem/response
10122: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10123: } elsif ($importmode eq 'part') {
10124: # Import as part(s)
10125: $importedparts=1;
10126: # We need to get the original file and the imported file to get the part order correct
10127: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10128: # Load and inspect original file
10129: if ($#origfileimportpartids<0) {
10130: undef(%importedpartids);
10131: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10132: my $origfile=&getfile($origfilelocation);
10133: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10134: }
10135:
10136: # Load and inspect imported file
10137: my $impfile=&getfile($location);
10138: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10139: if ($#impfilepartids>=0) {
10140: # This problem had parts
10141: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10142: } else {
10143: # Importing by turning a single problem into a problem part
10144: # It gets the import-tags ID as part-ID
10145: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10146: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10147: }
10148: } else {
10149: # Normal import
10150: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10151: if (defined($token->[2]->{'id'})) {
10152: $unikey.='_'.$token->[2]->{'id'};
10153: }
10154: }
10155:
10156: if ($depthcount<20) {
10157: my $metadata =
10158: &metadata($uri,'keys', $location,$unikey,
10159: $depthcount+1);
10160: foreach my $meta (split(',',$metadata)) {
10161: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10162: $metathesekeys{$meta}=1;
10163: }
10164:
10165: }
10166: } else {
10167: #
10168: # Not importing, some other kind of non-package, non-library start tag
10169: #
10170: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10171: if (defined($token->[2]->{'id'})) {
10172: $unikey.='_'.$token->[2]->{'id'};
10173: }
10174: if (defined($token->[2]->{'name'})) {
10175: $unikey.='_'.$token->[2]->{'name'};
10176: }
10177: $metathesekeys{$unikey}=1;
10178: foreach my $param (@{$token->[3]}) {
10179: $metaentry{':'.$unikey.'.'.$param} =
10180: $token->[2]->{$param};
10181: }
10182: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10183: my $default=$metaentry{':'.$unikey.'.default'};
10184: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10185: # only ws inside the tag, and not in default, so use default
10186: # as value
10187: $metaentry{':'.$unikey}=$default;
10188: } elsif ( $internaltext =~ /\S/ ) {
10189: # something interesting inside the tag
10190: $metaentry{':'.$unikey}=$internaltext;
10191: } else {
10192: # no interesting values, don't set a default
10193: }
10194: # end of not-a-package not-a-library import
10195: }
10196: # end of not-a-package start tag
10197: }
10198: # the next is the end of "start tag"
10199: }
10200: }
10201: my ($extension) = ($uri =~ /\.(\w+)$/);
10202: $extension = lc($extension);
10203: if ($extension eq 'htm') { $extension='html'; }
10204:
10205: foreach my $key (keys(%packagetab)) {
10206: #no specific packages #how's our extension
10207: if ($key!~/^extension_\Q$extension\E&/) { next; }
10208: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10209: \%metathesekeys);
10210: }
10211:
10212: if (!exists($metaentry{':packages'})
10213: || $packagetab{"import_defaults&extension_$extension"}) {
10214: foreach my $key (keys(%packagetab)) {
10215: #no specific packages well let's get default then
10216: if ($key!~/^default&/) { next; }
10217: &metadata_create_package_def($uri,$key,'default',
10218: \%metathesekeys);
10219: }
10220: }
10221: # are there custom rights to evaluate
10222: if ($metaentry{':copyright'} eq 'custom') {
10223:
10224: #
10225: # Importing a rights file here
10226: #
10227: unless ($depthcount) {
10228: my $location=$metaentry{':customdistributionfile'};
10229: my $dir=$filename;
10230: $dir=~s|[^/]*$||;
10231: $location=&filelocation($dir,$location);
10232: my $rights_metadata =
10233: &metadata($uri,'keys',$location,'_rights',
10234: $depthcount+1);
10235: foreach my $rights (split(',',$rights_metadata)) {
10236: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10237: $metathesekeys{$rights}=1;
10238: }
10239: }
10240: }
10241: # uniqifiy package listing
10242: my %seen;
10243: my @uniq_packages =
10244: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10245: $metaentry{':packages'} = join(',',@uniq_packages);
10246:
10247: if ($importedparts) {
10248: # We had imported parts and need to rebuild partorder
10249: $metaentry{':partorder'}='';
10250: $metathesekeys{'partorder'}=1;
10251: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10252: if ($origfileimportpartids[$index] eq 'part') {
10253: # original part, part of the problem
10254: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10255: } else {
10256: # we have imported parts at this position
10257: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10258: }
10259: }
10260: $metaentry{':partorder'}=~s/^\,//;
10261: }
10262:
10263: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10264: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10265: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10266: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10267: # this is the end of "was not already recently cached
10268: }
10269: return $metaentry{':'.$what};
10270: }
10271:
10272: sub metadata_create_package_def {
10273: my ($uri,$key,$package,$metathesekeys)=@_;
10274: my ($pack,$name,$subp)=split(/\&/,$key);
10275: if ($subp eq 'default') { next; }
10276:
10277: if (defined($metaentry{':packages'})) {
10278: $metaentry{':packages'}.=','.$package;
10279: } else {
10280: $metaentry{':packages'}=$package;
10281: }
10282: my $value=$packagetab{$key};
10283: my $unikey;
10284: $unikey='parameter_0_'.$name;
10285: $metaentry{':'.$unikey.'.part'}=0;
10286: $$metathesekeys{$unikey}=1;
10287: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10288: $metaentry{':'.$unikey.'.'.$subp}=$value;
10289: }
10290: if (defined($metaentry{':'.$unikey.'.default'})) {
10291: $metaentry{':'.$unikey}=
10292: $metaentry{':'.$unikey.'.default'};
10293: }
10294: }
10295:
10296: sub metadata_generate_part0 {
10297: my ($metadata,$metacache,$uri) = @_;
10298: my %allnames;
10299: foreach my $metakey (keys(%$metadata)) {
10300: if ($metakey=~/^parameter\_(.*)/) {
10301: my $part=$$metacache{':'.$metakey.'.part'};
10302: my $name=$$metacache{':'.$metakey.'.name'};
10303: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10304: $allnames{$name}=$part;
10305: }
10306: }
10307: }
10308: foreach my $name (keys(%allnames)) {
10309: $$metadata{"parameter_0_$name"}=1;
10310: my $key=":parameter_0_$name";
10311: $$metacache{"$key.part"}='0';
10312: $$metacache{"$key.name"}=$name;
10313: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10314: $allnames{$name}.'_'.$name.
10315: '.type'};
10316: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10317: '.display'};
10318: my $expr='[Part: '.$allnames{$name}.']';
10319: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10320: $$metacache{"$key.display"}=$olddis;
10321: }
10322: }
10323:
10324: # ------------------------------------------------------ Devalidate title cache
10325:
10326: sub devalidate_title_cache {
10327: my ($url)=@_;
10328: if (!$env{'request.course.id'}) { return; }
10329: my $symb=&symbread($url);
10330: if (!$symb) { return; }
10331: my $key=$env{'request.course.id'}."\0".$symb;
10332: &devalidate_cache_new('title',$key);
10333: }
10334:
10335: # ------------------------------------------------- Get the title of a course
10336:
10337: sub current_course_title {
10338: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10339: }
10340: # ------------------------------------------------- Get the title of a resource
10341:
10342: sub gettitle {
10343: my $urlsymb=shift;
10344: my $symb=&symbread($urlsymb);
10345: if ($symb) {
10346: my $key=$env{'request.course.id'}."\0".$symb;
10347: my ($result,$cached)=&is_cached_new('title',$key);
10348: if (defined($cached)) {
10349: return $result;
10350: }
10351: my ($map,$resid,$url)=&decode_symb($symb);
10352: my $title='';
10353: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10354: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10355: } else {
10356: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10357: &GDBM_READER(),0640)) {
10358: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10359: $title=$bighash{'title_'.$mapid.'.'.$resid};
10360: untie(%bighash);
10361: }
10362: }
10363: $title=~s/\&colon\;/\:/gs;
10364: if ($title) {
10365: # Remember both $symb and $title for dynamic metadata
10366: $accesshash{$symb.'___crstitle'}=$title;
10367: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10368: # Cache this title and then return it
10369: return &do_cache_new('title',$key,$title,600);
10370: }
10371: $urlsymb=$url;
10372: }
10373: my $title=&metadata($urlsymb,'title');
10374: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10375: return $title;
10376: }
10377:
10378: sub get_slot {
10379: my ($which,$cnum,$cdom)=@_;
10380: if (!$cnum || !$cdom) {
10381: (undef,my $courseid)=&whichuser();
10382: $cdom=$env{'course.'.$courseid.'.domain'};
10383: $cnum=$env{'course.'.$courseid.'.num'};
10384: }
10385: my $key=join("\0",'slots',$cdom,$cnum,$which);
10386: my %slotinfo;
10387: if (exists($remembered{$key})) {
10388: $slotinfo{$which} = $remembered{$key};
10389: } else {
10390: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10391: &Apache::lonhomework::showhash(%slotinfo);
10392: my ($tmp)=keys(%slotinfo);
10393: if ($tmp=~/^error:/) { return (); }
10394: $remembered{$key} = $slotinfo{$which};
10395: }
10396: if (ref($slotinfo{$which}) eq 'HASH') {
10397: return %{$slotinfo{$which}};
10398: }
10399: return $slotinfo{$which};
10400: }
10401:
10402: sub get_reservable_slots {
10403: my ($cnum,$cdom,$uname,$udom) = @_;
10404: my $now = time;
10405: my $reservable_info;
10406: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10407: if (exists($remembered{$key})) {
10408: $reservable_info = $remembered{$key};
10409: } else {
10410: my %resv;
10411: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10412: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10413: $reservable_info = \%resv;
10414: $remembered{$key} = $reservable_info;
10415: }
10416: return $reservable_info;
10417: }
10418:
10419: sub get_course_slots {
10420: my ($cnum,$cdom) = @_;
10421: my $hashid=$cnum.':'.$cdom;
10422: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10423: if (defined($cached)) {
10424: if (ref($result) eq 'HASH') {
10425: return %{$result};
10426: }
10427: } else {
10428: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10429: my ($tmp) = keys(%slots);
10430: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10431: &do_cache_new('allslots',$hashid,\%slots,600);
10432: return %slots;
10433: }
10434: }
10435: return;
10436: }
10437:
10438: sub devalidate_slots_cache {
10439: my ($cnum,$cdom)=@_;
10440: my $hashid=$cnum.':'.$cdom;
10441: &devalidate_cache_new('allslots',$hashid);
10442: }
10443:
10444: sub get_coursechange {
10445: my ($cdom,$cnum) = @_;
10446: if ($cdom eq '' || $cnum eq '') {
10447: return unless ($env{'request.course.id'});
10448: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10449: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10450: }
10451: my $hashid=$cdom.'_'.$cnum;
10452: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10453: if ((defined($cached)) && ($change ne '')) {
10454: return $change;
10455: } else {
10456: my %crshash;
10457: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10458: if ($crshash{'internal.contentchange'} eq '') {
10459: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10460: if ($change eq '') {
10461: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10462: $change = $crshash{'internal.created'};
10463: }
10464: } else {
10465: $change = $crshash{'internal.contentchange'};
10466: }
10467: my $cachetime = 600;
10468: &do_cache_new('crschange',$hashid,$change,$cachetime);
10469: }
10470: return $change;
10471: }
10472:
10473: sub devalidate_coursechange_cache {
10474: my ($cnum,$cdom)=@_;
10475: my $hashid=$cnum.':'.$cdom;
10476: &devalidate_cache_new('crschange',$hashid);
10477: }
10478:
10479: # ------------------------------------------------- Update symbolic store links
10480:
10481: sub symblist {
10482: my ($mapname,%newhash)=@_;
10483: $mapname=&deversion(&declutter($mapname));
10484: my %hash;
10485: if (($env{'request.course.fn'}) && (%newhash)) {
10486: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10487: &GDBM_WRCREAT(),0640)) {
10488: foreach my $url (keys(%newhash)) {
10489: next if ($url eq 'last_known'
10490: && $env{'form.no_update_last_known'});
10491: $hash{declutter($url)}=&encode_symb($mapname,
10492: $newhash{$url}->[1],
10493: $newhash{$url}->[0]);
10494: }
10495: if (untie(%hash)) {
10496: return 'ok';
10497: }
10498: }
10499: }
10500: return 'error';
10501: }
10502:
10503: # --------------------------------------------------------------- Verify a symb
10504:
10505: sub symbverify {
10506: my ($symb,$thisurl,$encstate)=@_;
10507: my $thisfn=$thisurl;
10508: $thisfn=&declutter($thisfn);
10509: # direct jump to resource in page or to a sequence - will construct own symbs
10510: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10511: # check URL part
10512: my ($map,$resid,$url)=&decode_symb($symb);
10513:
10514: unless ($url eq $thisfn) { return 0; }
10515:
10516: $symb=&symbclean($symb);
10517: $thisurl=&deversion($thisurl);
10518: $thisfn=&deversion($thisfn);
10519:
10520: my %bighash;
10521: my $okay=0;
10522:
10523: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10524: &GDBM_READER(),0640)) {
10525: my $noclutter;
10526: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10527: $thisurl =~ s/\?.+$//;
10528: if ($map =~ m{^uploaded/.+\.page$}) {
10529: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
10530: $thisurl =~ s{^\Qhttp://https://\E}{https://};
10531: $noclutter = 1;
10532: }
10533: }
10534: my $ids;
10535: if ($noclutter) {
10536: $ids=$bighash{'ids_'.$thisurl};
10537: } else {
10538: $ids=$bighash{'ids_'.&clutter($thisurl)};
10539: }
10540: unless ($ids) {
10541: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10542: $ids=$bighash{$idkey};
10543: }
10544: if ($ids) {
10545: # ------------------------------------------------------------------- Has ID(s)
10546: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10547: $symb =~ s/\?.+$//;
10548: }
10549: foreach my $id (split(/\,/,$ids)) {
10550: my ($mapid,$resid)=split(/\./,$id);
10551: if (
10552: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10553: eq $symb) {
10554: if (ref($encstate)) {
10555: $$encstate = $bighash{'encrypted_'.$id};
10556: }
10557: if (($env{'request.role.adv'}) ||
10558: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10559: ($thisurl eq '/adm/navmaps')) {
10560: $okay=1;
10561: last;
10562: }
10563: }
10564: }
10565: }
10566: untie(%bighash);
10567: }
10568: return $okay;
10569: }
10570:
10571: # --------------------------------------------------------------- Clean-up symb
10572:
10573: sub symbclean {
10574: my $symb=shift;
10575: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10576: # remove version from map
10577: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10578:
10579: # remove version from URL
10580: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10581:
10582: # remove wrapper
10583:
10584: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10585: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10586: return $symb;
10587: }
10588:
10589: # ---------------------------------------------- Split symb to find map and url
10590:
10591: sub encode_symb {
10592: my ($map,$resid,$url)=@_;
10593: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10594: }
10595:
10596: sub decode_symb {
10597: my $symb=shift;
10598: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10599: my ($map,$resid,$url)=split(/___/,$symb);
10600: return (&fixversion($map),$resid,&fixversion($url));
10601: }
10602:
10603: sub fixversion {
10604: my $fn=shift;
10605: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10606: my %bighash;
10607: my $uri=&clutter($fn);
10608: my $key=$env{'request.course.id'}.'_'.$uri;
10609: # is this cached?
10610: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10611: if (defined($cached)) { return $result; }
10612: # unfortunately not cached, or expired
10613: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10614: &GDBM_READER(),0640)) {
10615: if ($bighash{'version_'.$uri}) {
10616: my $version=$bighash{'version_'.$uri};
10617: unless (($version eq 'mostrecent') ||
10618: ($version==&getversion($uri))) {
10619: $uri=~s/\.(\w+)$/\.$version\.$1/;
10620: }
10621: }
10622: untie %bighash;
10623: }
10624: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10625: }
10626:
10627: sub deversion {
10628: my $url=shift;
10629: $url=~s/\.\d+\.(\w+)$/\.$1/;
10630: return $url;
10631: }
10632:
10633: # ------------------------------------------------------ Return symb list entry
10634:
10635: sub symbread {
10636: my ($thisfn,$donotrecurse)=@_;
10637: my $cache_str;
10638: if ($thisfn ne '') {
10639: $cache_str='request.symbread.cached.'.$thisfn;
10640: if ($env{$cache_str} ne '') {
10641: return $env{$cache_str};
10642: }
10643: } else {
10644: # no filename provided? try from environment
10645: if ($env{'request.symb'}) {
10646: return $env{$cache_str}=&symbclean($env{'request.symb'});
10647: }
10648: $thisfn=$env{'request.filename'};
10649: }
10650: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10651: # is that filename actually a symb? Verify, clean, and return
10652: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10653: if (&symbverify($thisfn,$1)) {
10654: return $env{$cache_str}=&symbclean($thisfn);
10655: }
10656: }
10657: $thisfn=declutter($thisfn);
10658: my %hash;
10659: my %bighash;
10660: my $syval='';
10661: if (($env{'request.course.fn'}) && ($thisfn)) {
10662: my $targetfn = $thisfn;
10663: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10664: $targetfn = 'adm/wrapper/'.$thisfn;
10665: }
10666: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10667: $targetfn=$1;
10668: }
10669: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10670: &GDBM_READER(),0640)) {
10671: $syval=$hash{$targetfn};
10672: untie(%hash);
10673: }
10674: # ---------------------------------------------------------- There was an entry
10675: if ($syval) {
10676: #unless ($syval=~/\_\d+$/) {
10677: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10678: #&appenv({'request.ambiguous' => $thisfn});
10679: #return $env{$cache_str}='';
10680: #}
10681: #$syval.=$1;
10682: #}
10683: } else {
10684: # ------------------------------------------------------- Was not in symb table
10685: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10686: &GDBM_READER(),0640)) {
10687: # ---------------------------------------------- Get ID(s) for current resource
10688: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10689: unless ($ids) {
10690: $ids=$bighash{'ids_/'.$thisfn};
10691: }
10692: unless ($ids) {
10693: # alias?
10694: $ids=$bighash{'mapalias_'.$thisfn};
10695: }
10696: if ($ids) {
10697: # ------------------------------------------------------------------- Has ID(s)
10698: my @possibilities=split(/\,/,$ids);
10699: if ($#possibilities==0) {
10700: # ----------------------------------------------- There is only one possibility
10701: my ($mapid,$resid)=split(/\./,$ids);
10702: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10703: $resid,$thisfn);
10704: } elsif (!$donotrecurse) {
10705: # ------------------------------------------ There is more than one possibility
10706: my $realpossible=0;
10707: foreach my $id (@possibilities) {
10708: my $file=$bighash{'src_'.$id};
10709: if (&allowed('bre',$file)) {
10710: my ($mapid,$resid)=split(/\./,$id);
10711: if ($bighash{'map_type_'.$mapid} ne 'page') {
10712: $realpossible++;
10713: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10714: $resid,$thisfn);
10715: }
10716: }
10717: }
10718: if ($realpossible!=1) { $syval=''; }
10719: } else {
10720: $syval='';
10721: }
10722: }
10723: untie(%bighash)
10724: }
10725: }
10726: if ($syval) {
10727: return $env{$cache_str}=$syval;
10728: }
10729: }
10730: &appenv({'request.ambiguous' => $thisfn});
10731: return $env{$cache_str}='';
10732: }
10733:
10734: # ---------------------------------------------------------- Return random seed
10735:
10736: sub numval {
10737: my $txt=shift;
10738: $txt=~tr/A-J/0-9/;
10739: $txt=~tr/a-j/0-9/;
10740: $txt=~tr/K-T/0-9/;
10741: $txt=~tr/k-t/0-9/;
10742: $txt=~tr/U-Z/0-5/;
10743: $txt=~tr/u-z/0-5/;
10744: $txt=~s/\D//g;
10745: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10746: return int($txt);
10747: }
10748:
10749: sub numval2 {
10750: my $txt=shift;
10751: $txt=~tr/A-J/0-9/;
10752: $txt=~tr/a-j/0-9/;
10753: $txt=~tr/K-T/0-9/;
10754: $txt=~tr/k-t/0-9/;
10755: $txt=~tr/U-Z/0-5/;
10756: $txt=~tr/u-z/0-5/;
10757: $txt=~s/\D//g;
10758: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10759: my $total;
10760: foreach my $val (@txts) { $total+=$val; }
10761: if ($_64bit) { if ($total > 2**32) { return -1; } }
10762: return int($total);
10763: }
10764:
10765: sub numval3 {
10766: use integer;
10767: my $txt=shift;
10768: $txt=~tr/A-J/0-9/;
10769: $txt=~tr/a-j/0-9/;
10770: $txt=~tr/K-T/0-9/;
10771: $txt=~tr/k-t/0-9/;
10772: $txt=~tr/U-Z/0-5/;
10773: $txt=~tr/u-z/0-5/;
10774: $txt=~s/\D//g;
10775: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10776: my $total;
10777: foreach my $val (@txts) { $total+=$val; }
10778: if ($_64bit) { $total=(($total<<32)>>32); }
10779: return $total;
10780: }
10781:
10782: sub digest {
10783: my ($data)=@_;
10784: my $digest=&Digest::MD5::md5($data);
10785: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10786: my ($e,$f);
10787: {
10788: use integer;
10789: $e=($a+$b);
10790: $f=($c+$d);
10791: if ($_64bit) {
10792: $e=(($e<<32)>>32);
10793: $f=(($f<<32)>>32);
10794: }
10795: }
10796: if (wantarray) {
10797: return ($e,$f);
10798: } else {
10799: my $g;
10800: {
10801: use integer;
10802: $g=($e+$f);
10803: if ($_64bit) {
10804: $g=(($g<<32)>>32);
10805: }
10806: }
10807: return $g;
10808: }
10809: }
10810:
10811: sub latest_rnd_algorithm_id {
10812: return '64bit5';
10813: }
10814:
10815: sub get_rand_alg {
10816: my ($courseid)=@_;
10817: if (!$courseid) { $courseid=(&whichuser())[1]; }
10818: if ($courseid) {
10819: return $env{"course.$courseid.rndseed"};
10820: }
10821: return &latest_rnd_algorithm_id();
10822: }
10823:
10824: sub validCODE {
10825: my ($CODE)=@_;
10826: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10827: return 0;
10828: }
10829:
10830: sub getCODE {
10831: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10832: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10833: defined($Apache::lonhomework::parsing_a_task) ) &&
10834: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10835: return $Apache::lonhomework::history{'resource.CODE'};
10836: }
10837: return undef;
10838: }
10839: #
10840: # Determines the random seed for a specific context:
10841: #
10842: # parameters:
10843: # symb - in course context the symb for the seed.
10844: # course_id - The course id of the form domain_coursenum.
10845: # domain - Domain for the user.
10846: # course - Course for the user.
10847: # cenv - environment of the course.
10848: #
10849: # NOTE:
10850: # All parameters are picked out of the environment if missing
10851: # or not defined.
10852: # If a symb cannot be determined the current time is used instead.
10853: #
10854: # For a given well defined symb, courside, domain, username,
10855: # and course environment, the seed is reproducible.
10856: #
10857: sub rndseed {
10858: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10859: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10860: if (!defined($symb)) {
10861: unless ($symb=$wsymb) { return time; }
10862: }
10863: if (!defined $courseid) {
10864: $courseid=$wcourseid;
10865: }
10866: if (!defined $domain) { $domain=$wdomain; }
10867: if (!defined $username) { $username=$wusername }
10868:
10869: my $which;
10870: if (defined($cenv->{'rndseed'})) {
10871: $which = $cenv->{'rndseed'};
10872: } else {
10873: $which =&get_rand_alg($courseid);
10874: }
10875: if (defined(&getCODE())) {
10876:
10877: if ($which eq '64bit5') {
10878: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10879: } elsif ($which eq '64bit4') {
10880: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10881: } else {
10882: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10883: }
10884: } elsif ($which eq '64bit5') {
10885: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10886: } elsif ($which eq '64bit4') {
10887: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10888: } elsif ($which eq '64bit3') {
10889: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10890: } elsif ($which eq '64bit2') {
10891: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10892: } elsif ($which eq '64bit') {
10893: return &rndseed_64bit($symb,$courseid,$domain,$username);
10894: }
10895: return &rndseed_32bit($symb,$courseid,$domain,$username);
10896: }
10897:
10898: sub rndseed_32bit {
10899: my ($symb,$courseid,$domain,$username)=@_;
10900: {
10901: use integer;
10902: my $symbchck=unpack("%32C*",$symb) << 27;
10903: my $symbseed=numval($symb) << 22;
10904: my $namechck=unpack("%32C*",$username) << 17;
10905: my $nameseed=numval($username) << 12;
10906: my $domainseed=unpack("%32C*",$domain) << 7;
10907: my $courseseed=unpack("%32C*",$courseid);
10908: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10909: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10910: #&logthis("rndseed :$num:$symb");
10911: if ($_64bit) { $num=(($num<<32)>>32); }
10912: return $num;
10913: }
10914: }
10915:
10916: sub rndseed_64bit {
10917: my ($symb,$courseid,$domain,$username)=@_;
10918: {
10919: use integer;
10920: my $symbchck=unpack("%32S*",$symb) << 21;
10921: my $symbseed=numval($symb) << 10;
10922: my $namechck=unpack("%32S*",$username);
10923:
10924: my $nameseed=numval($username) << 21;
10925: my $domainseed=unpack("%32S*",$domain) << 10;
10926: my $courseseed=unpack("%32S*",$courseid);
10927:
10928: my $num1=$symbchck+$symbseed+$namechck;
10929: my $num2=$nameseed+$domainseed+$courseseed;
10930: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10931: #&logthis("rndseed :$num:$symb");
10932: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10933: return "$num1,$num2";
10934: }
10935: }
10936:
10937: sub rndseed_64bit2 {
10938: my ($symb,$courseid,$domain,$username)=@_;
10939: {
10940: use integer;
10941: # strings need to be an even # of cahracters long, it it is odd the
10942: # last characters gets thrown away
10943: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10944: my $symbseed=numval($symb) << 10;
10945: my $namechck=unpack("%32S*",$username.' ');
10946:
10947: my $nameseed=numval($username) << 21;
10948: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10949: my $courseseed=unpack("%32S*",$courseid.' ');
10950:
10951: my $num1=$symbchck+$symbseed+$namechck;
10952: my $num2=$nameseed+$domainseed+$courseseed;
10953: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10954: #&logthis("rndseed :$num:$symb");
10955: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10956: return "$num1,$num2";
10957: }
10958: }
10959:
10960: sub rndseed_64bit3 {
10961: my ($symb,$courseid,$domain,$username)=@_;
10962: {
10963: use integer;
10964: # strings need to be an even # of cahracters long, it it is odd the
10965: # last characters gets thrown away
10966: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10967: my $symbseed=numval2($symb) << 10;
10968: my $namechck=unpack("%32S*",$username.' ');
10969:
10970: my $nameseed=numval2($username) << 21;
10971: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10972: my $courseseed=unpack("%32S*",$courseid.' ');
10973:
10974: my $num1=$symbchck+$symbseed+$namechck;
10975: my $num2=$nameseed+$domainseed+$courseseed;
10976: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10977: #&logthis("rndseed :$num1:$num2:$_64bit");
10978: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10979:
10980: return "$num1:$num2";
10981: }
10982: }
10983:
10984: sub rndseed_64bit4 {
10985: my ($symb,$courseid,$domain,$username)=@_;
10986: {
10987: use integer;
10988: # strings need to be an even # of cahracters long, it it is odd the
10989: # last characters gets thrown away
10990: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10991: my $symbseed=numval3($symb) << 10;
10992: my $namechck=unpack("%32S*",$username.' ');
10993:
10994: my $nameseed=numval3($username) << 21;
10995: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10996: my $courseseed=unpack("%32S*",$courseid.' ');
10997:
10998: my $num1=$symbchck+$symbseed+$namechck;
10999: my $num2=$nameseed+$domainseed+$courseseed;
11000: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11001: #&logthis("rndseed :$num1:$num2:$_64bit");
11002: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11003:
11004: return "$num1:$num2";
11005: }
11006: }
11007:
11008: sub rndseed_64bit5 {
11009: my ($symb,$courseid,$domain,$username)=@_;
11010: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11011: return "$num1:$num2";
11012: }
11013:
11014: sub rndseed_CODE_64bit {
11015: my ($symb,$courseid,$domain,$username)=@_;
11016: {
11017: use integer;
11018: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11019: my $symbseed=numval2($symb);
11020: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11021: my $CODEseed=numval(&getCODE());
11022: my $courseseed=unpack("%32S*",$courseid.' ');
11023: my $num1=$symbseed+$CODEchck;
11024: my $num2=$CODEseed+$courseseed+$symbchck;
11025: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11026: #&logthis("rndseed :$num1:$num2:$symb");
11027: if ($_64bit) { $num1=(($num1<<32)>>32); }
11028: if ($_64bit) { $num2=(($num2<<32)>>32); }
11029: return "$num1:$num2";
11030: }
11031: }
11032:
11033: sub rndseed_CODE_64bit4 {
11034: my ($symb,$courseid,$domain,$username)=@_;
11035: {
11036: use integer;
11037: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11038: my $symbseed=numval3($symb);
11039: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11040: my $CODEseed=numval3(&getCODE());
11041: my $courseseed=unpack("%32S*",$courseid.' ');
11042: my $num1=$symbseed+$CODEchck;
11043: my $num2=$CODEseed+$courseseed+$symbchck;
11044: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11045: #&logthis("rndseed :$num1:$num2:$symb");
11046: if ($_64bit) { $num1=(($num1<<32)>>32); }
11047: if ($_64bit) { $num2=(($num2<<32)>>32); }
11048: return "$num1:$num2";
11049: }
11050: }
11051:
11052: sub rndseed_CODE_64bit5 {
11053: my ($symb,$courseid,$domain,$username)=@_;
11054: my $code = &getCODE();
11055: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11056: return "$num1:$num2";
11057: }
11058:
11059: sub setup_random_from_rndseed {
11060: my ($rndseed)=@_;
11061: if ($rndseed =~/([,:])/) {
11062: my ($num1,$num2)=split(/[,:]/,$rndseed);
11063: &Math::Random::random_set_seed(abs($num1),abs($num2));
11064: } else {
11065: &Math::Random::random_set_seed_from_phrase($rndseed);
11066: }
11067: }
11068:
11069: sub latest_receipt_algorithm_id {
11070: return 'receipt3';
11071: }
11072:
11073: sub recunique {
11074: my $fucourseid=shift;
11075: my $unique;
11076: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11077: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11078: $unique=$env{"course.$fucourseid.internal.encseed"};
11079: } else {
11080: $unique=$perlvar{'lonReceipt'};
11081: }
11082: return unpack("%32C*",$unique);
11083: }
11084:
11085: sub recprefix {
11086: my $fucourseid=shift;
11087: my $prefix;
11088: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11089: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11090: $prefix=$env{"course.$fucourseid.internal.encpref"};
11091: } else {
11092: $prefix=$perlvar{'lonHostID'};
11093: }
11094: return unpack("%32C*",$prefix);
11095: }
11096:
11097: sub ireceipt {
11098: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11099:
11100: my $return =&recprefix($fucourseid).'-';
11101:
11102: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11103: $env{'request.state'} eq 'construct') {
11104: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11105: return $return;
11106: }
11107:
11108: my $cuname=unpack("%32C*",$funame);
11109: my $cudom=unpack("%32C*",$fudom);
11110: my $cucourseid=unpack("%32C*",$fucourseid);
11111: my $cusymb=unpack("%32C*",$fusymb);
11112: my $cunique=&recunique($fucourseid);
11113: my $cpart=unpack("%32S*",$part);
11114: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11115:
11116: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11117:
11118: $return.= ($cunique%$cuname+
11119: $cunique%$cudom+
11120: $cusymb%$cuname+
11121: $cusymb%$cudom+
11122: $cucourseid%$cuname+
11123: $cucourseid%$cudom+
11124: $cpart%$cuname+
11125: $cpart%$cudom);
11126: } else {
11127: $return.= ($cunique%$cuname+
11128: $cunique%$cudom+
11129: $cusymb%$cuname+
11130: $cusymb%$cudom+
11131: $cucourseid%$cuname+
11132: $cucourseid%$cudom);
11133: }
11134: return $return;
11135: }
11136:
11137: sub receipt {
11138: my ($part)=@_;
11139: my ($symb,$courseid,$domain,$name) = &whichuser();
11140: return &ireceipt($name,$domain,$courseid,$symb,$part);
11141: }
11142:
11143: sub whichuser {
11144: my ($passedsymb)=@_;
11145: my ($symb,$courseid,$domain,$name,$publicuser);
11146: if (defined($env{'form.grade_symb'})) {
11147: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11148: my $allowed=&allowed('vgr',$tmp_courseid);
11149: if (!$allowed &&
11150: exists($env{'request.course.sec'}) &&
11151: $env{'request.course.sec'} !~ /^\s*$/) {
11152: $allowed=&allowed('vgr',$tmp_courseid.
11153: '/'.$env{'request.course.sec'});
11154: }
11155: if ($allowed) {
11156: ($symb)=&get_env_multiple('form.grade_symb');
11157: $courseid=$tmp_courseid;
11158: ($domain)=&get_env_multiple('form.grade_domain');
11159: ($name)=&get_env_multiple('form.grade_username');
11160: return ($symb,$courseid,$domain,$name,$publicuser);
11161: }
11162: }
11163: if (!$passedsymb) {
11164: $symb=&symbread();
11165: } else {
11166: $symb=$passedsymb;
11167: }
11168: $courseid=$env{'request.course.id'};
11169: $domain=$env{'user.domain'};
11170: $name=$env{'user.name'};
11171: if ($name eq 'public' && $domain eq 'public') {
11172: if (!defined($env{'form.username'})) {
11173: $env{'form.username'}.=time.rand(10000000);
11174: }
11175: $name.=$env{'form.username'};
11176: }
11177: return ($symb,$courseid,$domain,$name,$publicuser);
11178:
11179: }
11180:
11181: # ------------------------------------------------------------ Serves up a file
11182: # returns either the contents of the file or
11183: # -1 if the file doesn't exist
11184: #
11185: # if the target is a file that was uploaded via DOCS,
11186: # a check will be made to see if a current copy exists on the local server,
11187: # if it does this will be served, otherwise a copy will be retrieved from
11188: # the home server for the course and stored in /home/httpd/html/userfiles on
11189: # the local server.
11190:
11191: sub getfile {
11192: my ($file) = @_;
11193: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11194: &repcopy($file);
11195: return &readfile($file);
11196: }
11197:
11198: sub repcopy_userfile {
11199: my ($file)=@_;
11200: my $londocroot = $perlvar{'lonDocRoot'};
11201: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11202: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11203: my ($cdom,$cnum,$filename) =
11204: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11205: my $uri="/uploaded/$cdom/$cnum/$filename";
11206: if (-e "$file") {
11207: # we already have a local copy, check it out
11208: my @fileinfo = stat($file);
11209: my $rtncode;
11210: my $info;
11211: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11212: if ($lwpresp ne 'ok') {
11213: # there is no such file anymore, even though we had a local copy
11214: if ($rtncode eq '404') {
11215: unlink($file);
11216: }
11217: return -1;
11218: }
11219: if ($info < $fileinfo[9]) {
11220: # nice, the file we have is up-to-date, just say okay
11221: return 'ok';
11222: } else {
11223: # the file is outdated, get rid of it
11224: unlink($file);
11225: }
11226: }
11227: # one way or the other, at this point, we don't have the file
11228: # construct the correct path for the file
11229: my @parts = ($cdom,$cnum);
11230: if ($filename =~ m|^(.+)/[^/]+$|) {
11231: push @parts, split(/\//,$1);
11232: }
11233: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11234: foreach my $part (@parts) {
11235: $path .= '/'.$part;
11236: if (!-e $path) {
11237: mkdir($path,0770);
11238: }
11239: }
11240: # now the path exists for sure
11241: # get a user agent
11242: my $ua=new LWP::UserAgent;
11243: my $transferfile=$file.'.in.transfer';
11244: # FIXME: this should flock
11245: if (-e $transferfile) { return 'ok'; }
11246: my $request;
11247: $uri=~s/^\///;
11248: my $homeserver = &homeserver($cnum,$cdom);
11249: my $protocol = $protocol{$homeserver};
11250: $protocol = 'http' if ($protocol ne 'https');
11251: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11252: my $response=$ua->request($request,$transferfile);
11253: # did it work?
11254: if ($response->is_error()) {
11255: unlink($transferfile);
11256: &logthis("Userfile repcopy failed for $uri");
11257: return -1;
11258: }
11259: # worked, rename the transfer file
11260: rename($transferfile,$file);
11261: return 'ok';
11262: }
11263:
11264: sub tokenwrapper {
11265: my $uri=shift;
11266: $uri=~s|^https?\://([^/]+)||;
11267: $uri=~s|^/||;
11268: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11269: my $token=$1;
11270: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11271: if ($udom && $uname && $file) {
11272: $file=~s|(\?\.*)*$||;
11273: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11274: my $homeserver = &homeserver($uname,$udom);
11275: my $protocol = $protocol{$homeserver};
11276: $protocol = 'http' if ($protocol ne 'https');
11277: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11278: (($uri=~/\?/)?'&':'?').'token='.$token.
11279: '&tokenissued='.$perlvar{'lonHostID'};
11280: } else {
11281: return '/adm/notfound.html';
11282: }
11283: }
11284:
11285: # call with reqtype HEAD: get last modification time
11286: # call with reqtype GET: get the file contents
11287: # Do not call this with reqtype GET for large files! It loads everything into memory
11288: #
11289: sub getuploaded {
11290: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11291: $uri=~s/^\///;
11292: my $homeserver = &homeserver($cnum,$cdom);
11293: my $protocol = $protocol{$homeserver};
11294: $protocol = 'http' if ($protocol ne 'https');
11295: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11296: my $ua=new LWP::UserAgent;
11297: my $request=new HTTP::Request($reqtype,$uri);
11298: my $response=$ua->request($request);
11299: $$rtncode = $response->code;
11300: if (! $response->is_success()) {
11301: return 'failed';
11302: }
11303: if ($reqtype eq 'HEAD') {
11304: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11305: } elsif ($reqtype eq 'GET') {
11306: $$info = $response->content;
11307: }
11308: return 'ok';
11309: }
11310:
11311: sub readfile {
11312: my $file = shift;
11313: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11314: my $fh;
11315: open($fh,"<$file");
11316: my $a='';
11317: while (my $line = <$fh>) { $a .= $line; }
11318: return $a;
11319: }
11320:
11321: sub filelocation {
11322: my ($dir,$file) = @_;
11323: my $location;
11324: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11325:
11326: if ($file =~ m-^/adm/-) {
11327: $file=~s-^/adm/wrapper/-/-;
11328: $file=~s-^/adm/coursedocs/showdoc/-/-;
11329: }
11330:
11331: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11332: $location = $file;
11333: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11334: my ($udom,$uname,$filename)=
11335: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11336: my $home=&homeserver($uname,$udom);
11337: my $is_me=0;
11338: my @ids=¤t_machine_ids();
11339: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11340: if ($is_me) {
11341: $location=propath($udom,$uname).'/userfiles/'.$filename;
11342: } else {
11343: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11344: $udom.'/'.$uname.'/'.$filename;
11345: }
11346: } elsif ($file =~ m-^/adm/-) {
11347: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11348: } else {
11349: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11350: $file=~s:^/(res|priv)/:/:;
11351: my $space=$1;
11352: if ( !( $file =~ m:^/:) ) {
11353: $location = $dir. '/'.$file;
11354: } else {
11355: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11356: }
11357: }
11358: $location=~s://+:/:g; # remove duplicate /
11359: while ($location=~m{/\.\./}) {
11360: if ($location =~ m{/[^/]+/\.\./}) {
11361: $location=~ s{/[^/]+/\.\./}{/}g;
11362: } else {
11363: $location=~ s{/\.\./}{/}g;
11364: }
11365: } #remove dir/..
11366: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11367: return $location;
11368: }
11369:
11370: sub hreflocation {
11371: my ($dir,$file)=@_;
11372: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11373: $file=filelocation($dir,$file);
11374: } elsif ($file=~m-^/adm/-) {
11375: $file=~s-^/adm/wrapper/-/-;
11376: $file=~s-^/adm/coursedocs/showdoc/-/-;
11377: }
11378: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11379: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11380: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11381: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11382: {/uploaded/$1/$2/}x;
11383: }
11384: if ($file=~ m{^/userfiles/}) {
11385: $file =~ s{^/userfiles/}{/uploaded/};
11386: }
11387: return $file;
11388: }
11389:
11390:
11391:
11392:
11393:
11394: sub current_machine_domains {
11395: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11396: }
11397:
11398: sub machine_domains {
11399: my ($hostname) = @_;
11400: my @domains;
11401: my %hostname = &all_hostnames();
11402: while( my($id, $name) = each(%hostname)) {
11403: # &logthis("-$id-$name-$hostname-");
11404: if ($hostname eq $name) {
11405: push(@domains,&host_domain($id));
11406: }
11407: }
11408: return @domains;
11409: }
11410:
11411: sub current_machine_ids {
11412: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11413: }
11414:
11415: sub machine_ids {
11416: my ($hostname) = @_;
11417: $hostname ||= &hostname($perlvar{'lonHostID'});
11418: my @ids;
11419: my %name_to_host = &all_names();
11420: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11421: return @{ $name_to_host{$hostname} };
11422: }
11423: return;
11424: }
11425:
11426: sub additional_machine_domains {
11427: my @domains;
11428: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11429: while( my $line = <$fh>) {
11430: $line =~ s/\s//g;
11431: push(@domains,$line);
11432: }
11433: return @domains;
11434: }
11435:
11436: sub default_login_domain {
11437: my $domain = $perlvar{'lonDefDomain'};
11438: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11439: foreach my $posdom (¤t_machine_domains(),
11440: &additional_machine_domains()) {
11441: if (lc($posdom) eq lc($testdomain)) {
11442: $domain=$posdom;
11443: last;
11444: }
11445: }
11446: return $domain;
11447: }
11448:
11449: # ------------------------------------------------------------- Declutters URLs
11450:
11451: sub declutter {
11452: my $thisfn=shift;
11453: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11454: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11455: $thisfn=~s/^\///;
11456: $thisfn=~s|^adm/wrapper/||;
11457: $thisfn=~s|^adm/coursedocs/showdoc/||;
11458: $thisfn=~s/^res\///;
11459: $thisfn=~s/^priv\///;
11460: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11461: $thisfn=~s/\?.+$//;
11462: }
11463: return $thisfn;
11464: }
11465:
11466: # ------------------------------------------------------------- Clutter up URLs
11467:
11468: sub clutter {
11469: my $thisfn='/'.&declutter(shift);
11470: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11471: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11472: $thisfn='/res'.$thisfn;
11473: }
11474: if ($thisfn !~m|^/adm|) {
11475: if ($thisfn =~ m|^/ext/|) {
11476: $thisfn='/adm/wrapper'.$thisfn;
11477: } else {
11478: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11479: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11480: if ($embstyle eq 'ssi'
11481: || ($embstyle eq 'hdn')
11482: || ($embstyle eq 'rat')
11483: || ($embstyle eq 'prv')
11484: || ($embstyle eq 'ign')) {
11485: #do nothing with these
11486: } elsif (($embstyle eq 'img')
11487: || ($embstyle eq 'emb')
11488: || ($embstyle eq 'wrp')) {
11489: $thisfn='/adm/wrapper'.$thisfn;
11490: } elsif ($embstyle eq 'unk'
11491: && $thisfn!~/\.(sequence|page)$/) {
11492: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11493: } else {
11494: # &logthis("Got a blank emb style");
11495: }
11496: }
11497: }
11498: return $thisfn;
11499: }
11500:
11501: sub clutter_with_no_wrapper {
11502: my $uri = &clutter(shift);
11503: if ($uri =~ m-^/adm/-) {
11504: $uri =~ s-^/adm/wrapper/-/-;
11505: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11506: }
11507: return $uri;
11508: }
11509:
11510: sub freeze_escape {
11511: my ($value)=@_;
11512: if (ref($value)) {
11513: $value=&nfreeze($value);
11514: return '__FROZEN__'.&escape($value);
11515: }
11516: return &escape($value);
11517: }
11518:
11519:
11520: sub thaw_unescape {
11521: my ($value)=@_;
11522: if ($value =~ /^__FROZEN__/) {
11523: substr($value,0,10,undef);
11524: $value=&unescape($value);
11525: return &thaw($value);
11526: }
11527: return &unescape($value);
11528: }
11529:
11530: sub correct_line_ends {
11531: my ($result)=@_;
11532: $$result =~s/\r\n/\n/mg;
11533: $$result =~s/\r/\n/mg;
11534: }
11535: # ================================================================ Main Program
11536:
11537: sub goodbye {
11538: &logthis("Starting Shut down");
11539: #not converted to using infrastruture and probably shouldn't be
11540: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11541: #converted
11542: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11543: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11544: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11545: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11546: #1.1 only
11547: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11548: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11549: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11550: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11551: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11552: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11553: &logthis(sprintf("%-20s is %s",'hits',$hits));
11554: &flushcourselogs();
11555: &logthis("Shutting down");
11556: }
11557:
11558: sub get_dns {
11559: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
11560: if (!$ignore_cache) {
11561: my ($content,$cached)=
11562: &Apache::lonnet::is_cached_new('dns',$url);
11563: if ($cached) {
11564: &$func($content,$hashref);
11565: return;
11566: }
11567: }
11568:
11569: my %alldns;
11570: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11571: foreach my $dns (<$config>) {
11572: next if ($dns !~ /^\^(\S*)/x);
11573: my $line = $1;
11574: my ($host,$protocol) = split(/:/,$line);
11575: if ($protocol ne 'https') {
11576: $protocol = 'http';
11577: }
11578: $alldns{$host} = $protocol;
11579: }
11580: while (%alldns) {
11581: my ($dns) = keys(%alldns);
11582: my $ua=new LWP::UserAgent;
11583: $ua->timeout(30);
11584: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11585: my $response=$ua->request($request);
11586: delete($alldns{$dns});
11587: next if ($response->is_error());
11588: my @content = split("\n",$response->content);
11589: unless ($nocache) {
11590: &do_cache_new('dns',$url,\@content,30*24*60*60);
11591: }
11592: &$func(\@content,$hashref);
11593: return;
11594: }
11595: close($config);
11596: my $which = (split('/',$url))[3];
11597: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11598: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11599: my @content = <$config>;
11600: &$func(\@content,$hashref);
11601: return;
11602: }
11603:
11604: # ------------------------------------------------------Get DNS checksums file
11605: sub parse_dns_checksums_tab {
11606: my ($lines,$hashref) = @_;
11607: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
11608: my $loncaparev = &get_server_loncaparev($machine_dom);
11609: my ($release,$timestamp) = split(/\-/,$loncaparev);
11610: my (%chksum,%revnum);
11611: if (ref($lines) eq 'ARRAY') {
11612: chomp(@{$lines});
11613: my $versions = shift(@{$lines});
11614: my %supported;
11615: if ($versions =~ /^VERSIONS\:([\w\.\,]+)$/) {
11616: my $releaseslist = $1;
11617: if ($releaseslist =~ /,/) {
11618: map { $supported{$_} = 1; } split(/,/,$releaseslist);
11619: } elsif ($releaseslist) {
11620: $supported{$releaseslist} = 1;
11621: }
11622: }
11623: if ($supported{$release}) {
11624: my $matchthis = 0;
11625: foreach my $line (@{$lines}) {
11626: if ($line =~ /^(\d[\w\.]+)$/) {
11627: if ($matchthis) {
11628: last;
11629: } elsif ($1 eq $release) {
11630: $matchthis = 1;
11631: }
11632: } elsif ($matchthis) {
11633: my ($file,$version,$shasum) = split(/,/,$line);
11634: $chksum{$file} = $shasum;
11635: $revnum{$file} = $version;
11636: }
11637: }
11638: if (ref($hashref) eq 'HASH') {
11639: %{$hashref} = (
11640: sums => \%chksum,
11641: versions => \%revnum,
11642: );
11643: }
11644: }
11645: }
11646: return;
11647: }
11648:
11649: sub fetch_dns_checksums {
11650: my %checksums;
11651: &get_dns('/adm/dns/checksums',\&parse_dns_checksums_tab,1,1,
11652: \%checksums);
11653: return \%checksums;
11654: }
11655:
11656: # ------------------------------------------------------------ Read domain file
11657: {
11658: my $loaded;
11659: my %domain;
11660:
11661: sub parse_domain_tab {
11662: my ($lines) = @_;
11663: foreach my $line (@$lines) {
11664: next if ($line =~ /^(\#|\s*$ )/x);
11665:
11666: chomp($line);
11667: my ($name,@elements) = split(/:/,$line,9);
11668: my %this_domain;
11669: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11670: 'lang_def', 'city', 'longi', 'lati',
11671: 'primary') {
11672: $this_domain{$field} = shift(@elements);
11673: }
11674: $domain{$name} = \%this_domain;
11675: }
11676: }
11677:
11678: sub reset_domain_info {
11679: undef($loaded);
11680: undef(%domain);
11681: }
11682:
11683: sub load_domain_tab {
11684: my ($ignore_cache) = @_;
11685: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11686: my $fh;
11687: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11688: my @lines = <$fh>;
11689: &parse_domain_tab(\@lines);
11690: }
11691: close($fh);
11692: $loaded = 1;
11693: }
11694:
11695: sub domain {
11696: &load_domain_tab() if (!$loaded);
11697:
11698: my ($name,$what) = @_;
11699: return if ( !exists($domain{$name}) );
11700:
11701: if (!$what) {
11702: return $domain{$name}{'description'};
11703: }
11704: return $domain{$name}{$what};
11705: }
11706:
11707: sub domain_info {
11708: &load_domain_tab() if (!$loaded);
11709: return %domain;
11710: }
11711:
11712: }
11713:
11714:
11715: # ------------------------------------------------------------- Read hosts file
11716: {
11717: my %hostname;
11718: my %hostdom;
11719: my %libserv;
11720: my $loaded;
11721: my %name_to_host;
11722: my %internetdom;
11723: my %LC_dns_serv;
11724:
11725: sub parse_hosts_tab {
11726: my ($file) = @_;
11727: foreach my $configline (@$file) {
11728: next if ($configline =~ /^(\#|\s*$ )/x);
11729: chomp($configline);
11730: if ($configline =~ /^\^/) {
11731: if ($configline =~ /^\^([\w.\-]+)/) {
11732: $LC_dns_serv{$1} = 1;
11733: }
11734: next;
11735: }
11736: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11737: $name=~s/\s//g;
11738: if ($id && $domain && $role && $name) {
11739: $hostname{$id}=$name;
11740: push(@{$name_to_host{$name}}, $id);
11741: $hostdom{$id}=$domain;
11742: if ($role eq 'library') { $libserv{$id}=$name; }
11743: if (defined($protocol)) {
11744: if ($protocol eq 'https') {
11745: $protocol{$id} = $protocol;
11746: } else {
11747: $protocol{$id} = 'http';
11748: }
11749: } else {
11750: $protocol{$id} = 'http';
11751: }
11752: if (defined($intdom)) {
11753: $internetdom{$id} = $intdom;
11754: }
11755: }
11756: }
11757: }
11758:
11759: sub reset_hosts_info {
11760: &purge_remembered();
11761: &reset_domain_info();
11762: &reset_hosts_ip_info();
11763: undef(%name_to_host);
11764: undef(%hostname);
11765: undef(%hostdom);
11766: undef(%libserv);
11767: undef($loaded);
11768: }
11769:
11770: sub load_hosts_tab {
11771: my ($ignore_cache) = @_;
11772: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11773: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11774: my @config = <$config>;
11775: &parse_hosts_tab(\@config);
11776: close($config);
11777: $loaded=1;
11778: }
11779:
11780: sub hostname {
11781: &load_hosts_tab() if (!$loaded);
11782:
11783: my ($lonid) = @_;
11784: return $hostname{$lonid};
11785: }
11786:
11787: sub all_hostnames {
11788: &load_hosts_tab() if (!$loaded);
11789:
11790: return %hostname;
11791: }
11792:
11793: sub all_names {
11794: &load_hosts_tab() if (!$loaded);
11795:
11796: return %name_to_host;
11797: }
11798:
11799: sub all_host_domain {
11800: &load_hosts_tab() if (!$loaded);
11801: return %hostdom;
11802: }
11803:
11804: sub is_library {
11805: &load_hosts_tab() if (!$loaded);
11806:
11807: return exists($libserv{$_[0]});
11808: }
11809:
11810: sub all_library {
11811: &load_hosts_tab() if (!$loaded);
11812:
11813: return %libserv;
11814: }
11815:
11816: sub unique_library {
11817: #2x reverse removes all hostnames that appear more than once
11818: my %unique = reverse &all_library();
11819: return reverse %unique;
11820: }
11821:
11822: sub get_servers {
11823: &load_hosts_tab() if (!$loaded);
11824:
11825: my ($domain,$type) = @_;
11826: my %possible_hosts = ($type eq 'library') ? %libserv
11827: : %hostname;
11828: my %result;
11829: if (ref($domain) eq 'ARRAY') {
11830: while ( my ($host,$hostname) = each(%possible_hosts)) {
11831: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11832: $result{$host} = $hostname;
11833: }
11834: }
11835: } else {
11836: while ( my ($host,$hostname) = each(%possible_hosts)) {
11837: if ($hostdom{$host} eq $domain) {
11838: $result{$host} = $hostname;
11839: }
11840: }
11841: }
11842: return %result;
11843: }
11844:
11845: sub get_unique_servers {
11846: my %unique = reverse &get_servers(@_);
11847: return reverse %unique;
11848: }
11849:
11850: sub host_domain {
11851: &load_hosts_tab() if (!$loaded);
11852:
11853: my ($lonid) = @_;
11854: return $hostdom{$lonid};
11855: }
11856:
11857: sub all_domains {
11858: &load_hosts_tab() if (!$loaded);
11859:
11860: my %seen;
11861: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11862: return @uniq;
11863: }
11864:
11865: sub internet_dom {
11866: &load_hosts_tab() if (!$loaded);
11867:
11868: my ($lonid) = @_;
11869: return $internetdom{$lonid};
11870: }
11871:
11872: sub is_LC_dns {
11873: &load_hosts_tab() if (!$loaded);
11874:
11875: my ($hostname) = @_;
11876: return exists($LC_dns_serv{$hostname});
11877: }
11878:
11879: }
11880:
11881: {
11882: my %iphost;
11883: my %name_to_ip;
11884: my %lonid_to_ip;
11885:
11886: sub get_hosts_from_ip {
11887: my ($ip) = @_;
11888: my %iphosts = &get_iphost();
11889: if (ref($iphosts{$ip})) {
11890: return @{$iphosts{$ip}};
11891: }
11892: return;
11893: }
11894:
11895: sub reset_hosts_ip_info {
11896: undef(%iphost);
11897: undef(%name_to_ip);
11898: undef(%lonid_to_ip);
11899: }
11900:
11901: sub get_host_ip {
11902: my ($lonid) = @_;
11903: if (exists($lonid_to_ip{$lonid})) {
11904: return $lonid_to_ip{$lonid};
11905: }
11906: my $name=&hostname($lonid);
11907: my $ip = gethostbyname($name);
11908: return if (!$ip || length($ip) ne 4);
11909: $ip=inet_ntoa($ip);
11910: $name_to_ip{$name} = $ip;
11911: $lonid_to_ip{$lonid} = $ip;
11912: return $ip;
11913: }
11914:
11915: sub get_iphost {
11916: my ($ignore_cache) = @_;
11917:
11918: if (!$ignore_cache) {
11919: if (%iphost) {
11920: return %iphost;
11921: }
11922: my ($ip_info,$cached)=
11923: &Apache::lonnet::is_cached_new('iphost','iphost');
11924: if ($cached) {
11925: %iphost = %{$ip_info->[0]};
11926: %name_to_ip = %{$ip_info->[1]};
11927: %lonid_to_ip = %{$ip_info->[2]};
11928: return %iphost;
11929: }
11930: }
11931:
11932: # get yesterday's info for fallback
11933: my %old_name_to_ip;
11934: my ($ip_info,$cached)=
11935: &Apache::lonnet::is_cached_new('iphost','iphost');
11936: if ($cached) {
11937: %old_name_to_ip = %{$ip_info->[1]};
11938: }
11939:
11940: my %name_to_host = &all_names();
11941: foreach my $name (keys(%name_to_host)) {
11942: my $ip;
11943: if (!exists($name_to_ip{$name})) {
11944: $ip = gethostbyname($name);
11945: if (!$ip || length($ip) ne 4) {
11946: if (defined($old_name_to_ip{$name})) {
11947: $ip = $old_name_to_ip{$name};
11948: &logthis("Can't find $name defaulting to old $ip");
11949: } else {
11950: &logthis("Name $name no IP found");
11951: next;
11952: }
11953: } else {
11954: $ip=inet_ntoa($ip);
11955: }
11956: $name_to_ip{$name} = $ip;
11957: } else {
11958: $ip = $name_to_ip{$name};
11959: }
11960: foreach my $id (@{ $name_to_host{$name} }) {
11961: $lonid_to_ip{$id} = $ip;
11962: }
11963: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11964: }
11965: &do_cache_new('iphost','iphost',
11966: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11967: 48*60*60);
11968:
11969: return %iphost;
11970: }
11971:
11972: #
11973: # Given a DNS returns the loncapa host name for that DNS
11974: #
11975: sub host_from_dns {
11976: my ($dns) = @_;
11977: my @hosts;
11978: my $ip;
11979:
11980: if (exists($name_to_ip{$dns})) {
11981: $ip = $name_to_ip{$dns};
11982: }
11983: if (!$ip) {
11984: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11985: if (length($ip) == 4) {
11986: $ip = &IO::Socket::inet_ntoa($ip);
11987: }
11988: }
11989: if ($ip) {
11990: @hosts = get_hosts_from_ip($ip);
11991: return $hosts[0];
11992: }
11993: return undef;
11994: }
11995:
11996: sub get_internet_names {
11997: my ($lonid) = @_;
11998: return if ($lonid eq '');
11999: my ($idnref,$cached)=
12000: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12001: if ($cached) {
12002: return $idnref;
12003: }
12004: my $ip = &get_host_ip($lonid);
12005: my @hosts = &get_hosts_from_ip($ip);
12006: my %iphost = &get_iphost();
12007: my (@idns,%seen);
12008: foreach my $id (@hosts) {
12009: my $dom = &host_domain($id);
12010: my $prim_id = &domain($dom,'primary');
12011: my $prim_ip = &get_host_ip($prim_id);
12012: next if ($seen{$prim_ip});
12013: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12014: foreach my $id (@{$iphost{$prim_ip}}) {
12015: my $intdom = &internet_dom($id);
12016: unless (grep(/^\Q$intdom\E$/,@idns)) {
12017: push(@idns,$intdom);
12018: }
12019: }
12020: }
12021: $seen{$prim_ip} = 1;
12022: }
12023: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12024: }
12025:
12026: }
12027:
12028: sub all_loncaparevs {
12029: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
12030: }
12031:
12032: BEGIN {
12033:
12034: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12035: unless ($readit) {
12036: {
12037: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12038: %perlvar = (%perlvar,%{$configvars});
12039: }
12040:
12041:
12042: # ------------------------------------------------------ Read spare server file
12043: {
12044: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12045:
12046: while (my $configline=<$config>) {
12047: chomp($configline);
12048: if ($configline) {
12049: my ($host,$type) = split(':',$configline,2);
12050: if (!defined($type) || $type eq '') { $type = 'default' };
12051: push(@{ $spareid{$type} }, $host);
12052: }
12053: }
12054: close($config);
12055: }
12056: # ------------------------------------------------------------ Read permissions
12057: {
12058: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12059:
12060: while (my $configline=<$config>) {
12061: chomp($configline);
12062: if ($configline) {
12063: my ($role,$perm)=split(/ /,$configline);
12064: if ($perm ne '') { $pr{$role}=$perm; }
12065: }
12066: }
12067: close($config);
12068: }
12069:
12070: # -------------------------------------------- Read plain texts for permissions
12071: {
12072: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12073:
12074: while (my $configline=<$config>) {
12075: chomp($configline);
12076: if ($configline) {
12077: my ($short,@plain)=split(/:/,$configline);
12078: %{$prp{$short}} = ();
12079: if (@plain > 0) {
12080: $prp{$short}{'std'} = $plain[0];
12081: for (my $i=1; $i<@plain; $i++) {
12082: $prp{$short}{'alt'.$i} = $plain[$i];
12083: }
12084: }
12085: }
12086: }
12087: close($config);
12088: }
12089:
12090: # ---------------------------------------------------------- Read package table
12091: {
12092: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12093:
12094: while (my $configline=<$config>) {
12095: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12096: chomp($configline);
12097: my ($short,$plain)=split(/:/,$configline);
12098: my ($pack,$name)=split(/\&/,$short);
12099: if ($plain ne '') {
12100: $packagetab{$pack.'&'.$name.'&name'}=$name;
12101: $packagetab{$short}=$plain;
12102: }
12103: }
12104: close($config);
12105: }
12106:
12107: # ---------------------------------------------------------- Read loncaparev table
12108: {
12109: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12110: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12111: while (my $configline=<$config>) {
12112: chomp($configline);
12113: my ($hostid,$loncaparev)=split(/:/,$configline);
12114: $loncaparevs{$hostid}=$loncaparev;
12115: }
12116: close($config);
12117: }
12118: }
12119: }
12120:
12121: # ---------------------------------------------------------- Read serverhostID table
12122: {
12123: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12124: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12125: while (my $configline=<$config>) {
12126: chomp($configline);
12127: my ($name,$id)=split(/:/,$configline);
12128: $serverhomeIDs{$name}=$id;
12129: }
12130: close($config);
12131: }
12132: }
12133: }
12134:
12135: {
12136: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12137: if (-e $file) {
12138: my $parser = HTML::LCParser->new($file);
12139: while (my $token = $parser->get_token()) {
12140: if ($token->[0] eq 'S') {
12141: my $item = $token->[1];
12142: my $name = $token->[2]{'name'};
12143: my $value = $token->[2]{'value'};
12144: if ($item ne '' && $name ne '' && $value ne '') {
12145: my $release = $parser->get_text();
12146: $release =~ s/(^\s*|\s*$ )//gx;
12147: $needsrelease{$item.':'.$name.':'.$value} = $release;
12148: }
12149: }
12150: }
12151: }
12152: }
12153:
12154: # ---------------------------------------------------------- Read managers table
12155: {
12156: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12157: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12158: while (my $configline=<$config>) {
12159: chomp($configline);
12160: next if ($configline =~ /^\#/);
12161: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12162: $managerstab{$configline} = 1;
12163: }
12164: }
12165: close($config);
12166: }
12167: }
12168: }
12169:
12170: # ------------- set up temporary directory
12171: {
12172: $tmpdir = LONCAPA::tempdir();
12173:
12174: }
12175:
12176: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12177: 'compress_threshold'=> 20_000,
12178: });
12179:
12180: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12181: $dumpcount=0;
12182: $locknum=0;
12183:
12184: &logtouch();
12185: &logthis('<font color="yellow">INFO: Read configuration</font>');
12186: $readit=1;
12187: {
12188: use integer;
12189: my $test=(2**32)+1;
12190: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12191: &logthis(" Detected 64bit platform ($_64bit)");
12192: }
12193:
12194: {
12195: eval {
12196: ($apache) =
12197: (Apache2::ServerUtil::get_server_version() =~ m{Apache/(\d+\.\d+)});
12198: };
12199: if ($@) {
12200: $apache = 1.3;
12201: }
12202: }
12203:
12204: }
12205: }
12206:
12207: 1;
12208: __END__
12209:
12210: =pod
12211:
12212: =head1 NAME
12213:
12214: Apache::lonnet - Subroutines to ask questions about things in the network.
12215:
12216: =head1 SYNOPSIS
12217:
12218: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12219:
12220: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12221:
12222: Common parameters:
12223:
12224: =over 4
12225:
12226: =item *
12227:
12228: $uname : an internal username (if $cname expecting a course Id specifically)
12229:
12230: =item *
12231:
12232: $udom : a domain (if $cdom expecting a course's domain specifically)
12233:
12234: =item *
12235:
12236: $symb : a resource instance identifier
12237:
12238: =item *
12239:
12240: $namespace : the name of a .db file that contains the data needed or
12241: being set.
12242:
12243: =back
12244:
12245: =head1 OVERVIEW
12246:
12247: lonnet provides subroutines which interact with the
12248: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12249: about classes, users, and resources.
12250:
12251: For many of these objects you can also use this to store data about
12252: them or modify them in various ways.
12253:
12254: =head2 Symbs
12255:
12256: To identify a specific instance of a resource, LON-CAPA uses symbols
12257: or "symbs"X<symb>. These identifiers are built from the URL of the
12258: map, the resource number of the resource in the map, and the URL of
12259: the resource itself. The latter is somewhat redundant, but might help
12260: if maps change.
12261:
12262: An example is
12263:
12264: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12265:
12266: The respective map entry is
12267:
12268: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12269: title="Problem 2">
12270: </resource>
12271:
12272: Symbs are used by the random number generator, as well as to store and
12273: restore data specific to a certain instance of for example a problem.
12274:
12275: =head2 Storing And Retrieving Data
12276:
12277: X<store()>X<cstore()>X<restore()>Three of the most important functions
12278: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12279: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12280: is is the non-critical message twin of cstore. These functions are for
12281: handlers to store a perl hash to a user's permanent data space in an
12282: easy manner, and to retrieve it again on another call. It is expected
12283: that a handler would use this once at the beginning to retrieve data,
12284: and then again once at the end to send only the new data back.
12285:
12286: The data is stored in the user's data directory on the user's
12287: homeserver under the ID of the course.
12288:
12289: The hash that is returned by restore will have all of the previous
12290: value for all of the elements of the hash.
12291:
12292: Example:
12293:
12294: #creating a hash
12295: my %hash;
12296: $hash{'foo'}='bar';
12297:
12298: #storing it
12299: &Apache::lonnet::cstore(\%hash);
12300:
12301: #changing a value
12302: $hash{'foo'}='notbar';
12303:
12304: #adding a new value
12305: $hash{'bar'}='foo';
12306: &Apache::lonnet::cstore(\%hash);
12307:
12308: #retrieving the hash
12309: my %history=&Apache::lonnet::restore();
12310:
12311: #print the hash
12312: foreach my $key (sort(keys(%history))) {
12313: print("\%history{$key} = $history{$key}");
12314: }
12315:
12316: Will print out:
12317:
12318: %history{1:foo} = bar
12319: %history{1:keys} = foo:timestamp
12320: %history{1:timestamp} = 990455579
12321: %history{2:bar} = foo
12322: %history{2:foo} = notbar
12323: %history{2:keys} = foo:bar:timestamp
12324: %history{2:timestamp} = 990455580
12325: %history{bar} = foo
12326: %history{foo} = notbar
12327: %history{timestamp} = 990455580
12328: %history{version} = 2
12329:
12330: Note that the special hash entries C<keys>, C<version> and
12331: C<timestamp> were added to the hash. C<version> will be equal to the
12332: total number of versions of the data that have been stored. The
12333: C<timestamp> attribute will be the UNIX time the hash was
12334: stored. C<keys> is available in every historical section to list which
12335: keys were added or changed at a specific historical revision of a
12336: hash.
12337:
12338: B<Warning>: do not store the hash that restore returns directly. This
12339: will cause a mess since it will restore the historical keys as if the
12340: were new keys. I.E. 1:foo will become 1:1:foo etc.
12341:
12342: Calling convention:
12343:
12344: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
12345: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
12346:
12347: For more detailed information, see lonnet specific documentation.
12348:
12349: =head1 RETURN MESSAGES
12350:
12351: =over 4
12352:
12353: =item * B<con_lost>: unable to contact remote host
12354:
12355: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12356: when the connection is brought back up
12357:
12358: =item * B<con_failed>: unable to contact remote host and unable to save message
12359: for later delivery
12360:
12361: =item * B<error:>: an error a occurred, a description of the error follows the :
12362:
12363: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12364: that was requested
12365:
12366: =back
12367:
12368: =head1 PUBLIC SUBROUTINES
12369:
12370: =head2 Session Environment Functions
12371:
12372: =over 4
12373:
12374: =item *
12375: X<appenv()>
12376: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12377: the user envirnoment file, and will be restored for each access this
12378: user makes during this session, also modifies the %env for the current
12379: process. Optional rolesarrayref - if defined contains a reference to an array
12380: of roles which are exempt from the restriction on modifying user.role entries
12381: in the user's environment.db and in %env.
12382:
12383: =item *
12384: X<delenv()>
12385: B<delenv($delthis,$regexp)>: removes all items from the session
12386: environment file that begin with $delthis. If the
12387: optional second arg - $regexp - is true, $delthis is treated as a
12388: regular expression, otherwise \Q$delthis\E is used.
12389: The values are also deleted from the current processes %env.
12390:
12391: =item * get_env_multiple($name)
12392:
12393: gets $name from the %env hash, it seemlessly handles the cases where multiple
12394: values may be defined and end up as an array ref.
12395:
12396: returns an array of values
12397:
12398: =back
12399:
12400: =head2 User Information
12401:
12402: =over 4
12403:
12404: =item *
12405: X<queryauthenticate()>
12406: B<queryauthenticate($uname,$udom)>: try to determine user's current
12407: authentication scheme
12408:
12409: =item *
12410: X<authenticate()>
12411: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12412: authenticate user from domain's lib servers (first use the current
12413: one). C<$upass> should be the users password.
12414: $checkdefauth is optional (value is 1 if a check should be made to
12415: authenticate user using default authentication method, and allow
12416: account creation if username does not have account in the domain).
12417: $clientcancheckhost is optional (value is 1 if checking whether the
12418: server can host will occur on the client side in lonauth.pm).
12419:
12420: =item *
12421: X<homeserver()>
12422: B<homeserver($uname,$udom)>: find the server which has
12423: the user's directory and files (there must be only one), this caches
12424: the answer, and also caches if there is a borken connection.
12425:
12426: =item *
12427: X<idget()>
12428: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12429: (IDs are a unique resource in a domain, there must be only 1 ID per
12430: username, and only 1 username per ID in a specific domain) (returns
12431: hash: id=>name,id=>name)
12432:
12433: =item *
12434: X<idrget()>
12435: B<idrget($udom,@unames)>: find the IDs behind a list of
12436: usernames (returns hash: name=>id,name=>id)
12437:
12438: =item *
12439: X<idput()>
12440: B<idput($udom,%ids)>: store away a list of names and associated IDs
12441:
12442: =item *
12443: X<rolesinit()>
12444: B<rolesinit($udom,$username)>: get user privileges.
12445: returns user role, first access and timer interval hashes
12446:
12447: =item *
12448: X<privileged()>
12449: B<privileged($username,$domain)>: returns a true if user has a
12450: privileged and active role (i.e. su or dc), false otherwise.
12451:
12452: =item *
12453: X<getsection()>
12454: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12455: course $cname, return section name/number or '' for "not in course"
12456: and '-1' for "no section"
12457:
12458: =item *
12459: X<userenvironment()>
12460: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12461: passed in @what from the requested user's environment, returns a hash
12462:
12463: =item *
12464: X<userlog_query()>
12465: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12466: activity.log file. %filters defines filters applied when parsing the
12467: log file. These can be start or end timestamps, or the type of action
12468: - log to look for Login or Logout events, check for Checkin or
12469: Checkout, role for role selection. The response is in the form
12470: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12471: escaped strings of the action recorded in the activity.log file.
12472:
12473: =back
12474:
12475: =head2 User Roles
12476:
12477: =over 4
12478:
12479: =item *
12480:
12481: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12482: F: full access
12483: U,I,K: authentication modes (cxx only)
12484: '': forbidden
12485: 1: user needs to choose course
12486: 2: browse allowed
12487: A: passphrase authentication needed
12488:
12489: =item *
12490:
12491: constructaccess($url,$setpriv) : check for access to construction space URL
12492:
12493: See if the owner domain and name in the URL match those in the
12494: expected environment. If so, return three element list
12495: ($ownername,$ownerdomain,$ownerhome).
12496:
12497: Otherwise return the null string.
12498:
12499: If second argument 'setpriv' is true, it assigns the privileges,
12500: and returns the same three element list, unless the owner has
12501: blocked "ad hoc" Domain Coordinator access to the Author Space,
12502: in which case the null string is returned.
12503:
12504: =item *
12505:
12506: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12507: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12508: and course level
12509:
12510: =item *
12511:
12512: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12513: (rolesplain.tab); plain text explanation of a user role term.
12514: $type is Course (default) or Community.
12515: If $forcedefault evaluates to true, text returned will be default
12516: text for $type. Otherwise, if this is a course, the text returned
12517: will be a custom name for the role (if defined in the course's
12518: environment). If no custom name is defined the default is returned.
12519:
12520: =item *
12521:
12522: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
12523: All arguments are optional. Returns a hash of a roles, either for
12524: co-author/assistant author roles for a user's Construction Space
12525: (default), or if $context is 'userroles', roles for the user himself,
12526: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12527: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12528: For each key, value is set to colon-separated start and end times for
12529: the role. If no username and domain are specified, will default to
12530: current user/domain. Types, roles, and roledoms are references to arrays
12531: of role statuses (active, future or previous), roles
12532: (e.g., cc,in, st etc.) and domains of the roles which can be used
12533: to restrict the list of roles reported. If no array ref is
12534: provided for types, will default to return only active roles.
12535:
12536: =item *
12537:
12538: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12539: user: $uname:$udom has a role in the course: $cdom_$cnum.
12540:
12541: Additional optional arguments are: $type (if role checking is to be restricted
12542: to certain user status types -- previous (expired roles), active (currently
12543: available roles) or future (roles available in the future), and
12544: $hideprivileged -- if true will not report course roles for users who
12545: have active Domain Coordinator role in course's domain or in additional
12546: domains (specified in 'Domains to check for privileged users' in course
12547: environment -- set via: Course Settings -> Classlists and staff listing).
12548:
12549: =item *
12550:
12551: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
12552: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
12553: $possdomains and $possroles are optional array refs -- to domains to check and
12554: roles to check. If $possdomains is not specified, a dump will be done of the
12555: users' roles.db to check for a dc or su role in any domain. This can be
12556: time consuming if &privileged is called repeatedly (e.g., when displaying a
12557: classlist), so in such cases, supplying a $possdomains array is preferred, as
12558: this then allows &privileged_by_domain() to be used, which caches the identity
12559: of privileged users, eliminating the need for repeated calls to &dump().
12560:
12561: =item *
12562:
12563: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
12564: where the outer hash keys are domains specified in the $possdomains array ref,
12565: next inner hash keys are privileged roles specified in the $roles array ref,
12566: and the innermost hash contains key = value pairs for username:domain = end:start
12567: for active or future "privileged" users with that role in that domain. To avoid
12568: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
12569: innerhash are cached using priv_$role and $dom as the identifiers.
12570:
12571: =back
12572:
12573: =head2 User Modification
12574:
12575: =over 4
12576:
12577: =item *
12578:
12579: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12580: user for the level given by URL. Optional start and end dates (leave empty
12581: string or zero for "no date")
12582:
12583: =item *
12584:
12585: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12586: change a users, password, possible return values are: ok,
12587: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12588: refused
12589:
12590: =item *
12591:
12592: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12593:
12594: =item *
12595:
12596: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12597: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12598:
12599: will update user information (firstname,middlename,lastname,generation,
12600: permanentemail), and if forceid is true, student/employee ID also.
12601: A user's institutional affiliation(s) can also be updated.
12602: User information fields will not be overwritten with empty entries
12603: unless the field is included in the $candelete array reference.
12604: This array is included when a single user is modified via "Manage Users",
12605: or when Autoupdate.pl is run by cron in a domain.
12606:
12607: =item *
12608:
12609: modifystudent
12610:
12611: modify a student's enrollment and identification information.
12612: The course id is resolved based on the current users environment.
12613: This means the envoking user must be a course coordinator or otherwise
12614: associated with a course.
12615:
12616: This call is essentially a wrapper for lonnet::modifyuser and
12617: lonnet::modify_student_enrollment
12618:
12619: Inputs:
12620:
12621: =over 4
12622:
12623: =item B<$udom> Student's loncapa domain
12624:
12625: =item B<$uname> Student's loncapa login name
12626:
12627: =item B<$uid> Student/Employee ID
12628:
12629: =item B<$umode> Student's authentication mode
12630:
12631: =item B<$upass> Student's password
12632:
12633: =item B<$first> Student's first name
12634:
12635: =item B<$middle> Student's middle name
12636:
12637: =item B<$last> Student's last name
12638:
12639: =item B<$gene> Student's generation
12640:
12641: =item B<$usec> Student's section in course
12642:
12643: =item B<$end> Unix time of the roles expiration
12644:
12645: =item B<$start> Unix time of the roles start date
12646:
12647: =item B<$forceid> If defined, allow $uid to be changed
12648:
12649: =item B<$desiredhome> server to use as home server for student
12650:
12651: =item B<$email> Student's permanent e-mail address
12652:
12653: =item B<$type> Type of enrollment (auto or manual)
12654:
12655: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12656:
12657: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12658:
12659: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12660:
12661: =item B<$context> role change context (shown in User Management Logs display in a course)
12662:
12663: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12664:
12665: =item B<$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.
12666:
12667: =back
12668:
12669: =item *
12670:
12671: modify_student_enrollment
12672:
12673: Change a students enrollment status in a class. The environment variable
12674: 'role.request.course' must be defined for this function to proceed.
12675:
12676: Inputs:
12677:
12678: =over 4
12679:
12680: =item $udom, students domain
12681:
12682: =item $uname, students name
12683:
12684: =item $uid, students user id
12685:
12686: =item $first, students first name
12687:
12688: =item $middle
12689:
12690: =item $last
12691:
12692: =item $gene
12693:
12694: =item $usec
12695:
12696: =item $end
12697:
12698: =item $start
12699:
12700: =item $type
12701:
12702: =item $locktype
12703:
12704: =item $cid
12705:
12706: =item $selfenroll
12707:
12708: =item $context
12709:
12710: =item $credits, number of credits student will earn from this class
12711:
12712: =back
12713:
12714:
12715: =item *
12716:
12717: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12718: custom role; give a custom role to a user for the level given by URL. Specify
12719: name and domain of role author, and role name
12720:
12721: =item *
12722:
12723: revokerole($udom,$uname,$url,$role) : revoke a role for url
12724:
12725: =item *
12726:
12727: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12728:
12729: =back
12730:
12731: =head2 Course Infomation
12732:
12733: =over 4
12734:
12735: =item *
12736:
12737: coursedescription($courseid,$options) : returns a hash of information about the
12738: specified course id, including all environment settings for the
12739: course, the description of the course will be in the hash under the
12740: key 'description'
12741:
12742: $options is an optional parameter that if supplied is a hash reference that controls
12743: what how this function works. It has the following key/values:
12744:
12745: =over 4
12746:
12747: =item freshen_cache
12748:
12749: If defined, and the environment cache for the course is valid, it is
12750: returned in the returned hash.
12751:
12752: =item one_time
12753:
12754: If defined, the last cache time is set to _now_
12755:
12756: =item user
12757:
12758: If defined, the supplied username is used instead of the current user.
12759:
12760:
12761: =back
12762:
12763: =item *
12764:
12765: resdata($name,$domain,$type,@which) : request for current parameter
12766: setting for a specific $type, where $type is either 'course' or 'user',
12767: @what should be a list of parameters to ask about. This routine caches
12768: answers for 5 minutes.
12769:
12770: =item *
12771:
12772: get_courseresdata($courseid, $domain) : dump the entire course resource
12773: data base, returning a hash that is keyed by the resource name and has
12774: values that are the resource value. I believe that the timestamps and
12775: versions are also returned.
12776:
12777: =back
12778:
12779: =head2 Course Modification
12780:
12781: =over 4
12782:
12783: =item *
12784:
12785: writecoursepref($courseid,%prefs) : write preferences (environment
12786: database) for a course
12787:
12788: =item *
12789:
12790: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12791:
12792: =item *
12793:
12794: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12795:
12796: =item *
12797:
12798: is_course($courseid), is_course($cdom, $cnum)
12799:
12800: Accepts either a combined $courseid (in the form of domain_courseid) or the
12801: two component version $cdom, $cnum. It checks if the specified course exists.
12802:
12803: Returns:
12804: undef if the course doesn't exist, otherwise
12805: in scalar context the combined courseid.
12806: in list context the two components of the course identifier, domain and
12807: courseid.
12808:
12809: =back
12810:
12811: =head2 Resource Subroutines
12812:
12813: =over 4
12814:
12815: =item *
12816:
12817: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12818:
12819: =item *
12820:
12821: repcopy($filename) : subscribes to the requested file, and attempts to
12822: replicate from the owning library server, Might return
12823: 'unavailable', 'not_found', 'forbidden', 'ok', or
12824: 'bad_request', also attempts to grab the metadata for the
12825: resource. Expects the local filesystem pathname
12826: (/home/httpd/html/res/....)
12827:
12828: =back
12829:
12830: =head2 Resource Information
12831:
12832: =over 4
12833:
12834: =item *
12835:
12836: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12837: a vairety of different possible values, $varname should be a request
12838: string, and the other parameters can be used to specify who and what
12839: one is asking about.
12840:
12841: Possible values for $varname are environment.lastname (or other item
12842: from the envirnment hash), user.name (or someother aspect about the
12843: user), resource.0.maxtries (or some other part and parameter of a
12844: resource)
12845:
12846: =item *
12847:
12848: directcondval($number) : get current value of a condition; reads from a state
12849: string
12850:
12851: =item *
12852:
12853: condval($condidx) : value of condition index based on state
12854:
12855: =item *
12856:
12857: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12858: resource's metadata, $what should be either a specific key, or either
12859: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12860: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12861:
12862: this function automatically caches all requests
12863:
12864: =item *
12865:
12866: metadata_query($query,$custom,$customshow) : make a metadata query against the
12867: network of library servers; returns file handle of where SQL and regex results
12868: will be stored for query
12869:
12870: =item *
12871:
12872: symbread($filename) : return symbolic list entry (filename argument optional);
12873: returns the data handle
12874:
12875: =item *
12876:
12877: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12878: and is a possible symb for the URL in $thisfn, and if is an encrypted
12879: resource that the user accessed using /enc/ returns a 1 on success, 0
12880: on failure, user must be in a course, as it assumes the existence of
12881: the course initial hash, and uses $env('request.course.id'}. The third
12882: arg is an optional reference to a scalar. If this arg is passed in the
12883: call to symbverify, it will be set to 1 if the symb has been set to be
12884: encrypted; otherwise it will be null.
12885:
12886: =item *
12887:
12888: symbclean($symb) : removes versions numbers from a symb, returns the
12889: cleaned symb
12890:
12891: =item *
12892:
12893: is_on_map($uri) : checks if the $uri is somewhere on the current
12894: course map, user must be in a course for it to work.
12895:
12896: =item *
12897:
12898: numval($salt) : return random seed value (addend for rndseed)
12899:
12900: =item *
12901:
12902: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12903: a random seed, all arguments are optional, if they aren't sent it uses the
12904: environment to derive them. Note: if symb isn't sent and it can't get one
12905: from &symbread it will use the current time as its return value
12906:
12907: =item *
12908:
12909: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12910: unfakeable, receipt
12911:
12912: =item *
12913:
12914: receipt() : API to ireceipt working off of env values; given out to users
12915:
12916: =item *
12917:
12918: countacc($url) : count the number of accesses to a given URL
12919:
12920: =item *
12921:
12922: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12923:
12924: =item *
12925:
12926: checkin($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 $tcrsid)
12927:
12928: =item *
12929:
12930: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12931:
12932: =item *
12933:
12934: devalidate($symb) : devalidate temporary spreadsheet calculations,
12935: forcing spreadsheet to reevaluate the resource scores next time.
12936:
12937: =item *
12938:
12939: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
12940: when viewing in course context.
12941:
12942: input: six args -- filename (decluttered), course number, course domain,
12943: url, symb (if registered) and group (if this is a
12944: group item -- e.g., bulletin board, group page etc.).
12945:
12946: output: array of five scalars --
12947: $cfile -- url for file editing if editable on current server
12948: $home -- homeserver of resource (i.e., for author if published,
12949: or course if uploaded.).
12950: $switchserver -- 1 if server switch will be needed.
12951: $forceedit -- 1 if icon/link should be to go to edit mode
12952: $forceview -- 1 if icon/link should be to go to view mode
12953:
12954: =item *
12955:
12956: is_course_upload($file,$cnum,$cdom)
12957:
12958: Used in course context to determine if current file was uploaded to
12959: the course (i.e., would be found in /userfiles/docs on the course's
12960: homeserver.
12961:
12962: input: 3 args -- filename (decluttered), course number and course domain.
12963: output: boolean -- 1 if file was uploaded.
12964:
12965: =back
12966:
12967: =head2 Storing/Retreiving Data
12968:
12969: =over 4
12970:
12971: =item *
12972:
12973: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12974: for this url; hashref needs to be given and should be a \%hashname; the
12975: remaining args aren't required and if they aren't passed or are '' they will
12976: be derived from the env
12977:
12978: =item *
12979:
12980: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12981: uses critical subroutine
12982:
12983: =item *
12984:
12985: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12986: all args are optional
12987:
12988: =item *
12989:
12990: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12991: dumps the complete (or key matching regexp) namespace into a hash
12992: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12993: normally &store()ed into
12994:
12995: $range should be either an integer '100' (give me the first 100
12996: matching records)
12997: or be two integers sperated by a - with no spaces
12998: '30-50' (give me the 30th through the 50th matching
12999: records)
13000:
13001:
13002: =item *
13003:
13004: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
13005: replaces a &store() version of data with a replacement set of data
13006: for a particular resource in a namespace passed in the $storehash hash
13007: reference
13008:
13009: =item *
13010:
13011: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13012: works very similar to store/cstore, but all data is stored in a
13013: temporary location and can be reset using tmpreset, $storehash should
13014: be a hash reference, returns nothing on success
13015:
13016: =item *
13017:
13018: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13019: similar to restore, but all data is stored in a temporary location and
13020: can be reset using tmpreset. Returns a hash of values on success,
13021: error string otherwise.
13022:
13023: =item *
13024:
13025: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13026: deltes all keys for $symb form the temporary storage hash.
13027:
13028: =item *
13029:
13030: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13031: reference filled in from namesp ($udom and $uname are optional)
13032:
13033: =item *
13034:
13035: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13036: namesp ($udom and $uname are optional)
13037:
13038: =item *
13039:
13040: dump($namespace,$udom,$uname,$regexp,$range) :
13041: dumps the complete (or key matching regexp) namespace into a hash
13042: ($udom, $uname, $regexp, $range are optional)
13043:
13044: $range should be either an integer '100' (give me the first 100
13045: matching records)
13046: or be two integers sperated by a - with no spaces
13047: '30-50' (give me the 30th through the 50th matching
13048: records)
13049: =item *
13050:
13051: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13052: $store can be a scalar, an array reference, or if the amount to be
13053: incremented is > 1, a hash reference.
13054:
13055: ($udom and $uname are optional)
13056:
13057: =item *
13058:
13059: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13060: ($udom and $uname are optional)
13061:
13062: =item *
13063:
13064: cput($namespace,$storehash,$udom,$uname) : critical put
13065: ($udom and $uname are optional)
13066:
13067: =item *
13068:
13069: newput($namespace,$storehash,$udom,$uname) :
13070:
13071: Attempts to store the items in the $storehash, but only if they don't
13072: currently exist, if this succeeds you can be certain that you have
13073: successfully created a new key value pair in the $namespace db.
13074:
13075:
13076: Args:
13077: $namespace: name of database to store values to
13078: $storehash: hashref to store to the db
13079: $udom: (optional) domain of user containing the db
13080: $uname: (optional) name of user caontaining the db
13081:
13082: Returns:
13083: 'ok' -> succeeded in storing all keys of $storehash
13084: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13085: least <key> already existed in the db (other
13086: requested keys may also already exist)
13087: 'error: <msg>' -> unable to tie the DB or other error occurred
13088: 'con_lost' -> unable to contact request server
13089: 'refused' -> action was not allowed by remote machine
13090:
13091:
13092: =item *
13093:
13094: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13095: reference filled in from namesp (encrypts the return communication)
13096: ($udom and $uname are optional)
13097:
13098: =item *
13099:
13100: log($udom,$name,$home,$message) : write to permanent log for user; use
13101: critical subroutine
13102:
13103: =item *
13104:
13105: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13106: array reference filled in from namespace found in domain level on either
13107: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13108:
13109: =item *
13110:
13111: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13112: domain level either on specified domain server ($uhome) or primary domain
13113: server ($udom and $uhome are optional)
13114:
13115: =item *
13116:
13117: get_domain_defaults($target_domain) : returns hash with defaults for
13118: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
13119: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
13120: or localauth), initial password or a kerberos realm, language (e.g., en-us).
13121: Values are retrieved from cache (if current), or from domain's configuration.db
13122: (if available), or lastly from values in lonTabs/dns_domain,tab,
13123: or lonTabs/domain.tab.
13124:
13125: %domdefaults = &get_auth_defaults($target_domain);
13126:
13127: =back
13128:
13129: =head2 Network Status Functions
13130:
13131: =over 4
13132:
13133: =item *
13134:
13135: dirlist() : return directory list based on URI (first arg).
13136:
13137: Inputs: 1 required, 5 optional.
13138:
13139: =over
13140:
13141: =item
13142: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13143:
13144: =item
13145: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13146:
13147: =item
13148: $username - username of user/course to be listed. Extracted from $uri if absent.
13149:
13150: =item
13151: $getpropath - boolean: 1 if prepend path using &propath().
13152:
13153: =item
13154: $getuserdir - boolean: 1 if prepend path for "userfiles".
13155:
13156: =item
13157: $alternateRoot - path to prepend in place of path from $uri.
13158:
13159: =back
13160:
13161: Returns: Array of up to two items.
13162:
13163: =over
13164:
13165: a reference to an array of files/subdirectories
13166:
13167: =over
13168:
13169: Each element in the array of files/subdirectories is a & separated list of
13170: item name and the result of running stat on the item. If dirlist was requested
13171: for a file instead of a directory, the item name will be ''. For a directory
13172: listing, if the item is a metadata file, the element will end &N&M
13173: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13174: default copyright set (1).
13175:
13176: =back
13177:
13178: a scalar containing error condition (if encountered).
13179:
13180: =over
13181:
13182: =item
13183: no_host (no homeserver identified for $username:$domain).
13184:
13185: =item
13186: no_such_host (server contacted for listing not identified as valid host).
13187:
13188: =item
13189: con_lost (connection to remote server failed).
13190:
13191: =item
13192: refused (invalid $username:$domain received on lond side).
13193:
13194: =item
13195: no_such_dir (directory at specified path on lond side does not exist).
13196:
13197: =item
13198: empty (directory at specified path on lond side is empty).
13199:
13200: =over
13201:
13202: This is currently not encountered because the &ls3, &ls2,
13203: &ls (_handler) routines on the lond side do not filter out
13204: . and .. from a directory listing.
13205:
13206: =back
13207:
13208: =back
13209:
13210: =back
13211:
13212: =item *
13213:
13214: spareserver() : find server with least workload from spare.tab
13215:
13216:
13217: =item *
13218:
13219: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13220: if there is no corresponding loncapa host.
13221:
13222: =back
13223:
13224:
13225: =head2 Apache Request
13226:
13227: =over 4
13228:
13229: =item *
13230:
13231: ssi($url,%hash) : server side include, does a complete request cycle on url to
13232: localhost, posts hash
13233:
13234: =back
13235:
13236: =head2 Data to String to Data
13237:
13238: =over 4
13239:
13240: =item *
13241:
13242: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13243: and '&' separators, supports elements that are arrayrefs and hashrefs
13244:
13245: =item *
13246:
13247: hashref2str($hashref) : convert a hashref into a string complete with
13248: escaping and '=' and '&' separators, supports elements that are
13249: arrayrefs and hashrefs
13250:
13251: =item *
13252:
13253: arrayref2str($arrayref) : convert an arrayref into a string complete
13254: with escaping and '&' separators, supports elements that are arrayrefs
13255: and hashrefs
13256:
13257: =item *
13258:
13259: str2hash($string) : convert string to hash using unescaping and
13260: splitting on '=' and '&', supports elements that are arrayrefs and
13261: hashrefs
13262:
13263: =item *
13264:
13265: str2array($string) : convert string to hash using unescaping and
13266: splitting on '&', supports elements that are arrayrefs and hashrefs
13267:
13268: =back
13269:
13270: =head2 Logging Routines
13271:
13272:
13273: These routines allow one to make log messages in the lonnet.log and
13274: lonnet.perm logfiles.
13275:
13276: =over 4
13277:
13278: =item *
13279:
13280: logtouch() : make sure the logfile, lonnet.log, exists
13281:
13282: =item *
13283:
13284: logthis() : append message to the normal lonnet.log file, it gets
13285: preiodically rolled over and deleted.
13286:
13287: =item *
13288:
13289: logperm() : append a permanent message to lonnet.perm.log, this log
13290: file never gets deleted by any automated portion of the system, only
13291: messages of critical importance should go in here.
13292:
13293:
13294: =back
13295:
13296: =head2 General File Helper Routines
13297:
13298: =over 4
13299:
13300: =item *
13301:
13302: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13303: (a) files in /uploaded
13304: (i) If a local copy of the file exists -
13305: compares modification date of local copy with last-modified date for
13306: definitive version stored on home server for course. If local copy is
13307: stale, requests a new version from the home server and stores it.
13308: If the original has been removed from the home server, then local copy
13309: is unlinked.
13310: (ii) If local copy does not exist -
13311: requests the file from the home server and stores it.
13312:
13313: If $caller is 'uploadrep':
13314: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13315: for request for files originally uploaded via DOCS.
13316: - returns 'ok' if fresh local copy now available, -1 otherwise.
13317:
13318: Otherwise:
13319: This indicates a call from the content generation phase of the request.
13320: - returns the entire contents of the file or -1.
13321:
13322: (b) files in /res
13323: - returns the entire contents of a file or -1;
13324: it properly subscribes to and replicates the file if neccessary.
13325:
13326:
13327: =item *
13328:
13329: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13330: reference
13331:
13332: returns either a stat() list of data about the file or an empty list
13333: if the file doesn't exist or couldn't find out about it (connection
13334: problems or user unknown)
13335:
13336: =item *
13337:
13338: filelocation($dir,$file) : returns file system location of a file
13339: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13340: directory that relative $file lookups are to looked in ($dir of /a/dir
13341: and a file of ../bob will become /a/bob)
13342:
13343: =item *
13344:
13345: hreflocation($dir,$file) : returns file system location or a URL; same as
13346: filelocation except for hrefs
13347:
13348: =item *
13349:
13350: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
13351:
13352: =back
13353:
13354: =head2 Usererfile file routines (/uploaded*)
13355:
13356: =over 4
13357:
13358: =item *
13359:
13360: userfileupload(): main rotine for putting a file in a user or course's
13361: filespace, arguments are,
13362:
13363: formname - required - this is the name of the element in $env where the
13364: filename, and the contents of the file to create/modifed exist
13365: the filename is in $env{'form.'.$formname.'.filename'} and the
13366: contents of the file is located in $env{'form.'.$formname}
13367: context - if coursedoc, store the file in the course of the active role
13368: of the current user;
13369: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13370: if 'canceloverwrite': delete file in tmp/overwrites directory
13371: subdir - required - subdirectory to put the file in under ../userfiles/
13372: if undefined, it will be placed in "unknown"
13373:
13374: (This routine calls clean_filename() to remove any dangerous
13375: characters from the filename, and then calls finuserfileupload() to
13376: complete the transaction)
13377:
13378: returns either the url of the uploaded file (/uploaded/....) if successful
13379: and /adm/notfound.html if unsuccessful
13380:
13381: =item *
13382:
13383: clean_filename(): routine for cleaing a filename up for storage in
13384: userfile space, argument is:
13385:
13386: filename - proposed filename
13387:
13388: returns: the new clean filename
13389:
13390: =item *
13391:
13392: finishuserfileupload(): routine that creates and sends the file to
13393: userspace, probably shouldn't be called directly
13394:
13395: docuname: username or courseid of destination for the file
13396: docudom: domain of user/course of destination for the file
13397: formname: same as for userfileupload()
13398: fname: filename (including subdirectories) for the file
13399: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13400: allfiles: reference to hash used to store objects found by parser
13401: codebase: reference to hash used for codebases of java objects found by parser
13402: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13403: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13404: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13405: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13406: context: if 'overwrite', will move the uploaded file from its temporary location to
13407: userfiles to facilitate overwriting a previously uploaded file with same name.
13408: mimetype: reference to scalar to accommodate mime type determined
13409: from File::MMagic if $parser = parse.
13410:
13411: returns either the url of the uploaded file (/uploaded/....) if successful
13412: and /adm/notfound.html if unsuccessful (or an error message if context
13413: was 'overwrite').
13414:
13415:
13416: =item *
13417:
13418: renameuserfile(): renames an existing userfile to a new name
13419:
13420: Args:
13421: docuname: username or courseid of destination for the file
13422: docudom: domain of user/course of destination for the file
13423: old: current file name (including any subdirs under userfiles)
13424: new: desired file name (including any subdirs under userfiles)
13425:
13426: =item *
13427:
13428: mkdiruserfile(): creates a directory is a userfiles dir
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: dir: dir to create (including any subdirs under userfiles)
13434:
13435: =item *
13436:
13437: removeuserfile(): removes a file that exists in userfiles
13438:
13439: Args:
13440: docuname: username or courseid of destination for the file
13441: docudom: domain of user/course of destination for the file
13442: fname: filname to delete (including any subdirs under userfiles)
13443:
13444: =item *
13445:
13446: removeuploadedurl(): convience function for removeuserfile()
13447:
13448: Args:
13449: url: a full /uploaded/... url to delete
13450:
13451: =item *
13452:
13453: get_portfile_permissions():
13454: Args:
13455: domain: domain of user or course contain the portfolio files
13456: user: name of user or num of course contain the portfolio files
13457: Returns:
13458: hashref of a dump of the proper file_permissions.db
13459:
13460:
13461: =item *
13462:
13463: get_access_controls():
13464:
13465: Args:
13466: current_permissions: the hash ref returned from get_portfile_permissions()
13467: group: (optional) the group you want the files associated with
13468: file: (optional) the file you want access info on
13469:
13470: Returns:
13471: a hash (keys are file names) of hashes containing
13472: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13473: values are XML containing access control settings (see below)
13474:
13475: Internal notes:
13476:
13477: access controls are stored in file_permissions.db as key=value pairs.
13478: key -> path to file/file_name\0uniqueID:scope_end_start
13479: where scope -> public,guest,course,group,domains or users.
13480: end -> UNIX time for end of access (0 -> no end date)
13481: start -> UNIX time for start of access
13482:
13483: value -> XML description of access control
13484: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13485: <start></start>
13486: <end></end>
13487:
13488: <password></password> for scope type = guest
13489:
13490: <domain></domain> for scope type = course or group
13491: <number></number>
13492: <roles id="">
13493: <role></role>
13494: <access></access>
13495: <section></section>
13496: <group></group>
13497: </roles>
13498:
13499: <dom></dom> for scope type = domains
13500:
13501: <users> for scope type = users
13502: <user>
13503: <uname></uname>
13504: <udom></udom>
13505: </user>
13506: </users>
13507: </scope>
13508:
13509: Access data is also aggregated for each file in an additional key=value pair:
13510: key -> path to file/file_name\0accesscontrol
13511: value -> reference to hash
13512: hash contains key = value pairs
13513: where key = uniqueID:scope_end_start
13514: value = UNIX time record was last updated
13515:
13516: Used to improve speed of look-ups of access controls for each file.
13517:
13518: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13519:
13520: =item *
13521:
13522: modify_access_controls():
13523:
13524: Modifies access controls for a portfolio file
13525: Args
13526: 1. file name
13527: 2. reference to hash of required changes,
13528: 3. domain
13529: 4. username
13530: where domain,username are the domain of the portfolio owner
13531: (either a user or a course)
13532:
13533: Returns:
13534: 1. result of additions or updates ('ok' or 'error', with error message).
13535: 2. result of deletions ('ok' or 'error', with error message).
13536: 3. reference to hash of any new or updated access controls.
13537: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13538: key = integer (inbound ID)
13539: value = uniqueID
13540:
13541: =item *
13542:
13543: get_timebased_id():
13544:
13545: Attempts to get a unique timestamp-based suffix for use with items added to a
13546: course via the Course Editor (e.g., folders, composite pages,
13547: group bulletin boards).
13548:
13549: Args: (first three required; six others optional)
13550:
13551: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
13552: docssequence, or name of group
13553:
13554: 2. keyid (alphanumeric): name of temporary locking key in hash,
13555: e.g., num, boardids
13556:
13557: 3. namespace: name of gdbm file used to store suffixes already assigned;
13558: file will be named nohist_namespace.db
13559:
13560: 4. cdom: domain of course; default is current course domain from %env
13561:
13562: 5. cnum: course number; default is current course number from %env
13563:
13564: 6. idtype: set to concat if an additional digit is to be appended to the
13565: unix timestamp to form the suffix, if the plain timestamp is already
13566: in use. Default is to not do this, but simply increment the unix
13567: timestamp by 1 until a unique key is obtained.
13568:
13569: 7. who: holder of locking key; defaults to user:domain for user.
13570:
13571: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
13572: retrying); default is 3.
13573:
13574: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
13575:
13576: Returns:
13577:
13578: 1. suffix obtained (numeric)
13579:
13580: 2. result of deleting locking key (ok if deleted, or lock never obtained)
13581:
13582: 3. error: contains (localized) error message if an error occurred.
13583:
13584:
13585: =back
13586:
13587: =head2 HTTP Helper Routines
13588:
13589: =over 4
13590:
13591: =item *
13592:
13593: escape() : unpack non-word characters into CGI-compatible hex codes
13594:
13595: =item *
13596:
13597: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13598:
13599: =back
13600:
13601: =head1 PRIVATE SUBROUTINES
13602:
13603: =head2 Underlying communication routines (Shouldn't call)
13604:
13605: =over 4
13606:
13607: =item *
13608:
13609: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13610:
13611: =item *
13612:
13613: reply() : uses subreply to send a message to remote machine, logs all failures
13614:
13615: =item *
13616:
13617: critical() : passes a critical message to another server; if cannot
13618: get through then place message in connection buffer directory and
13619: returns con_delayed, if incapable of saving message, returns
13620: con_failed
13621:
13622: =item *
13623:
13624: reconlonc() : tries to reconnect lonc client processes.
13625:
13626: =back
13627:
13628: =head2 Resource Access Logging
13629:
13630: =over 4
13631:
13632: =item *
13633:
13634: flushcourselogs() : flush (save) buffer logs and access logs
13635:
13636: =item *
13637:
13638: courselog($what) : save message for course in hash
13639:
13640: =item *
13641:
13642: courseacclog($what) : save message for course using &courselog(). Perform
13643: special processing for specific resource types (problems, exams, quizzes, etc).
13644:
13645: =item *
13646:
13647: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13648: as a PerlChildExitHandler
13649:
13650: =back
13651:
13652: =head2 Other
13653:
13654: =over 4
13655:
13656: =item *
13657:
13658: symblist($mapname,%newhash) : update symbolic storage links
13659:
13660: =back
13661:
13662: =cut
13663:
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