1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1275 2014/12/16 19:57:56 musolffc 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
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,$cachekeys) = @_;
360: my $items;
361: return unless (ref($cachekeys) eq 'ARRAY');
362: my $cachestr = join('&',@{$cachekeys});
363: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
364: return $response;
365: }
366:
367: # -------------------------------------------------- Non-critical communication
368: sub subreply {
369: my ($cmd,$server)=@_;
370: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
371: #
372: # With loncnew process trimming, there's a timing hole between lonc server
373: # process exit and the master server picking up the listen on the AF_UNIX
374: # socket. In that time interval, a lock file will exist:
375:
376: my $lockfile=$peerfile.".lock";
377: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
378: sleep(1);
379: }
380: # At this point, either a loncnew parent is listening or an old lonc
381: # or loncnew child is listening so we can connect or everything's dead.
382: #
383: # We'll give the connection a few tries before abandoning it. If
384: # connection is not possible, we'll con_lost back to the client.
385: #
386: my $client;
387: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
388: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
389: Type => SOCK_STREAM,
390: Timeout => 10);
391: if ($client) {
392: last; # Connected!
393: } else {
394: &create_connection(&hostname($server),$server);
395: }
396: sleep(1); # Try again later if failed connection.
397: }
398: my $answer;
399: if ($client) {
400: print $client "sethost:$server:$cmd\n";
401: $answer=<$client>;
402: if (!$answer) { $answer="con_lost"; }
403: chomp($answer);
404: } else {
405: $answer = 'con_lost'; # Failed connection.
406: }
407: return $answer;
408: }
409:
410: sub reply {
411: my ($cmd,$server)=@_;
412: unless (defined(&hostname($server))) { return 'no_such_host'; }
413: my $answer=subreply($cmd,$server);
414: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
415: &logthis("<font color=\"blue\">WARNING:".
416: " $cmd to $server returned $answer</font>");
417: }
418: return $answer;
419: }
420:
421: # ----------------------------------------------------------- Send USR1 to lonc
422:
423: sub reconlonc {
424: my ($lonid) = @_;
425: my $hostname = &hostname($lonid);
426: if ($lonid) {
427: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
428: if ($hostname && -e $peerfile) {
429: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
430: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
431: Type => SOCK_STREAM,
432: Timeout => 10);
433: if ($client) {
434: print $client ("reset_retries\n");
435: my $answer=<$client>;
436: #reset just this one.
437: }
438: }
439: return;
440: }
441:
442: &logthis("Trying to reconnect lonc");
443: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
444: if (open(my $fh,"<$loncfile")) {
445: my $loncpid=<$fh>;
446: chomp($loncpid);
447: if (kill 0 => $loncpid) {
448: &logthis("lonc at pid $loncpid responding, sending USR1");
449: kill USR1 => $loncpid;
450: sleep 1;
451: } else {
452: &logthis(
453: "<font color=\"blue\">WARNING:".
454: " lonc at pid $loncpid not responding, giving up</font>");
455: }
456: } else {
457: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
458: }
459: }
460:
461: # ------------------------------------------------------ Critical communication
462:
463: sub critical {
464: my ($cmd,$server)=@_;
465: unless (&hostname($server)) {
466: &logthis("<font color=\"blue\">WARNING:".
467: " Critical message to unknown server ($server)</font>");
468: return 'no_such_host';
469: }
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: &reconlonc("$perlvar{'lonSockDir'}/$server");
473: my $answer=reply($cmd,$server);
474: if ($answer eq 'con_lost') {
475: my $now=time;
476: my $middlename=$cmd;
477: $middlename=substr($middlename,0,16);
478: $middlename=~s/\W//g;
479: my $dfilename=
480: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
481: $dumpcount++;
482: {
483: my $dfh;
484: if (open($dfh,">$dfilename")) {
485: print $dfh "$cmd\n";
486: close($dfh);
487: }
488: }
489: sleep 2;
490: my $wcmd='';
491: {
492: my $dfh;
493: if (open($dfh,"<$dfilename")) {
494: $wcmd=<$dfh>;
495: close($dfh);
496: }
497: }
498: chomp($wcmd);
499: if ($wcmd eq $cmd) {
500: &logthis("<font color=\"blue\">WARNING: ".
501: "Connection buffer $dfilename: $cmd</font>");
502: &logperm("D:$server:$cmd");
503: return 'con_delayed';
504: } else {
505: &logthis("<font color=\"red\">CRITICAL:"
506: ." Critical connection failed: $server $cmd</font>");
507: &logperm("F:$server:$cmd");
508: return 'con_failed';
509: }
510: }
511: }
512: return $answer;
513: }
514:
515: # ------------------------------------------- check if return value is an error
516:
517: sub error {
518: my ($result) = @_;
519: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
520: if ($2 == 2) { return undef; }
521: return $1;
522: }
523: return undef;
524: }
525:
526: sub convert_and_load_session_env {
527: my ($lonidsdir,$handle)=@_;
528: my @profile;
529: {
530: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
531: if (!$opened) {
532: return 0;
533: }
534: flock($idf,LOCK_SH);
535: @profile=<$idf>;
536: close($idf);
537: }
538: my %temp_env;
539: foreach my $line (@profile) {
540: if ($line !~ m/=/) {
541: return 0;
542: }
543: chomp($line);
544: my ($envname,$envvalue)=split(/=/,$line,2);
545: $temp_env{&unescape($envname)} = &unescape($envvalue);
546: }
547: unlink("$lonidsdir/$handle.id");
548: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
549: 0640)) {
550: %disk_env = %temp_env;
551: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
552: untie(%disk_env);
553: }
554: return 1;
555: }
556:
557: # ------------------------------------------- Transfer profile into environment
558: my $env_loaded;
559: sub transfer_profile_to_env {
560: my ($lonidsdir,$handle,$force_transfer) = @_;
561: if (!$force_transfer && $env_loaded) { return; }
562:
563: if (!defined($lonidsdir)) {
564: $lonidsdir = $perlvar{'lonIDsDir'};
565: }
566: if (!defined($handle)) {
567: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
568: }
569:
570: my $convert;
571: {
572: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
573: if (!$opened) {
574: return;
575: }
576: flock($idf,LOCK_SH);
577: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
578: &GDBM_READER(),0640)) {
579: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
580: untie(%disk_env);
581: } else {
582: $convert = 1;
583: }
584: }
585: if ($convert) {
586: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
587: &logthis("Failed to load session, or convert session.");
588: }
589: }
590:
591: my %remove;
592: while ( my $envname = each(%env) ) {
593: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
594: if ($time < time-300) {
595: $remove{$key}++;
596: }
597: }
598: }
599:
600: $env{'user.environment'} = "$lonidsdir/$handle.id";
601: $env_loaded=1;
602: foreach my $expired_key (keys(%remove)) {
603: &delenv($expired_key);
604: }
605: }
606:
607: # ---------------------------------------------------- Check for valid session
608: sub check_for_valid_session {
609: my ($r,$name,$userhashref) = @_;
610: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
611: if ($name eq '') {
612: $name = 'lonID';
613: }
614: my $lonid=$cookies{$name};
615: return undef if (!$lonid);
616:
617: my $handle=&LONCAPA::clean_handle($lonid->value);
618: my $lonidsdir;
619: if ($name eq 'lonDAV') {
620: $lonidsdir=$r->dir_config('lonDAVsessDir');
621: } else {
622: $lonidsdir=$r->dir_config('lonIDsDir');
623: }
624: return undef if (!-e "$lonidsdir/$handle.id");
625:
626: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
627: return undef if (!$opened);
628:
629: flock($idf,LOCK_SH);
630: my %disk_env;
631: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
632: &GDBM_READER(),0640)) {
633: return undef;
634: }
635:
636: if (!defined($disk_env{'user.name'})
637: || !defined($disk_env{'user.domain'})) {
638: return undef;
639: }
640:
641: if (ref($userhashref) eq 'HASH') {
642: $userhashref->{'name'} = $disk_env{'user.name'};
643: $userhashref->{'domain'} = $disk_env{'user.domain'};
644: }
645:
646: return $handle;
647: }
648:
649: sub timed_flock {
650: my ($file,$lock_type) = @_;
651: my $failed=0;
652: eval {
653: local $SIG{__DIE__}='DEFAULT';
654: local $SIG{ALRM}=sub {
655: $failed=1;
656: die("failed lock");
657: };
658: alarm(13);
659: flock($file,$lock_type);
660: alarm(0);
661: };
662: if ($failed) {
663: return undef;
664: } else {
665: return 1;
666: }
667: }
668:
669: # ---------------------------------------------------------- Append Environment
670:
671: sub appenv {
672: my ($newenv,$roles) = @_;
673: if (ref($newenv) eq 'HASH') {
674: foreach my $key (keys(%{$newenv})) {
675: my $refused = 0;
676: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
677: $refused = 1;
678: if (ref($roles) eq 'ARRAY') {
679: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
680: if (grep(/^\Q$role\E$/,@{$roles})) {
681: $refused = 0;
682: }
683: }
684: }
685: if ($refused) {
686: &logthis("<font color=\"blue\">WARNING: ".
687: "Attempt to modify environment ".$key." to ".$newenv->{$key}
688: .'</font>');
689: delete($newenv->{$key});
690: } else {
691: $env{$key}=$newenv->{$key};
692: }
693: }
694: my $opened = open(my $env_file,'+<',$env{'user.environment'});
695: if ($opened
696: && &timed_flock($env_file,LOCK_EX)
697: &&
698: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
699: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
700: while (my ($key,$value) = each(%{$newenv})) {
701: $disk_env{$key} = $value;
702: }
703: untie(%disk_env);
704: }
705: }
706: return 'ok';
707: }
708: # ----------------------------------------------------- Delete from Environment
709:
710: sub delenv {
711: my ($delthis,$regexp,$roles) = @_;
712: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
713: my $refused = 1;
714: if (ref($roles) eq 'ARRAY') {
715: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
716: if (grep(/^\Q$role\E$/,@{$roles})) {
717: $refused = 0;
718: }
719: }
720: if ($refused) {
721: &logthis("<font color=\"blue\">WARNING: ".
722: "Attempt to delete from environment ".$delthis);
723: return 'error';
724: }
725: }
726: my $opened = open(my $env_file,'+<',$env{'user.environment'});
727: if ($opened
728: && &timed_flock($env_file,LOCK_EX)
729: &&
730: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
731: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
732: foreach my $key (keys(%disk_env)) {
733: if ($regexp) {
734: if ($key=~/^$delthis/) {
735: delete($env{$key});
736: delete($disk_env{$key});
737: }
738: } else {
739: if ($key=~/^\Q$delthis\E/) {
740: delete($env{$key});
741: delete($disk_env{$key});
742: }
743: }
744: }
745: untie(%disk_env);
746: }
747: return 'ok';
748: }
749:
750: sub get_env_multiple {
751: my ($name) = @_;
752: my @values;
753: if (defined($env{$name})) {
754: # exists is it an array
755: if (ref($env{$name})) {
756: @values=@{ $env{$name} };
757: } else {
758: $values[0]=$env{$name};
759: }
760: }
761: return(@values);
762: }
763:
764: # ------------------------------------------------------------------- Locking
765:
766: sub set_lock {
767: my ($text)=@_;
768: $locknum++;
769: my $id=$$.'-'.$locknum;
770: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
771: 'session.lock.'.$id => $text});
772: return $id;
773: }
774:
775: sub get_locks {
776: my $num=0;
777: my %texts=();
778: foreach my $lock (split(/\,/,$env{'session.locks'})) {
779: if ($lock=~/\w/) {
780: $num++;
781: $texts{$lock}=$env{'session.lock.'.$lock};
782: }
783: }
784: return ($num,%texts);
785: }
786:
787: sub remove_lock {
788: my ($id)=@_;
789: my $newlocks='';
790: foreach my $lock (split(/\,/,$env{'session.locks'})) {
791: if (($lock=~/\w/) && ($lock ne $id)) {
792: $newlocks.=','.$lock;
793: }
794: }
795: &appenv({'session.locks' => $newlocks});
796: &delenv('session.lock.'.$id);
797: }
798:
799: sub remove_all_locks {
800: my $activelocks=$env{'session.locks'};
801: foreach my $lock (split(/\,/,$env{'session.locks'})) {
802: if ($lock=~/\w/) {
803: &remove_lock($lock);
804: }
805: }
806: }
807:
808:
809: # ------------------------------------------ Find out current server userload
810: sub userload {
811: my $numusers=0;
812: {
813: opendir(LONIDS,$perlvar{'lonIDsDir'});
814: my $filename;
815: my $curtime=time;
816: while ($filename=readdir(LONIDS)) {
817: next if ($filename eq '.' || $filename eq '..');
818: next if ($filename =~ /publicuser_\d+\.id/);
819: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
820: if ($curtime-$mtime < 1800) { $numusers++; }
821: }
822: closedir(LONIDS);
823: }
824: my $userloadpercent=0;
825: my $maxuserload=$perlvar{'lonUserLoadLim'};
826: if ($maxuserload) {
827: $userloadpercent=100*$numusers/$maxuserload;
828: }
829: $userloadpercent=sprintf("%.2f",$userloadpercent);
830: return $userloadpercent;
831: }
832:
833: # ------------------------------ Find server with least workload from spare.tab
834:
835: sub spareserver {
836: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
837: my $spare_server;
838: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
839: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
840: : $userloadpercent;
841: my ($uint_dom,$remotesessions);
842: if (($udom ne '') && (&domain($udom) ne '')) {
843: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
844: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
845: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
846: $remotesessions = $udomdefaults{'remotesessions'};
847: }
848: my $spareshash = &this_host_spares($udom);
849: if (ref($spareshash) eq 'HASH') {
850: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
851: foreach my $try_server (@{ $spareshash->{'primary'} }) {
852: if ($uint_dom) {
853: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
854: $try_server));
855: }
856: ($spare_server, $lowest_load) =
857: &compare_server_load($try_server, $spare_server, $lowest_load);
858: }
859: }
860:
861: my $found_server = ($spare_server ne '' && $lowest_load < 100);
862:
863: if (!$found_server) {
864: if (ref($spareshash->{'default'}) eq 'ARRAY') {
865: foreach my $try_server (@{ $spareshash->{'default'} }) {
866: if ($uint_dom) {
867: next unless (&spare_can_host($udom,$uint_dom,
868: $remotesessions,$try_server));
869: }
870: ($spare_server, $lowest_load) =
871: &compare_server_load($try_server, $spare_server, $lowest_load);
872: }
873: }
874: }
875: }
876:
877: if (!$want_server_name) {
878: my $protocol = 'http';
879: if ($protocol{$spare_server} eq 'https') {
880: $protocol = $protocol{$spare_server};
881: }
882: if (defined($spare_server)) {
883: my $hostname = &hostname($spare_server);
884: if (defined($hostname)) {
885: $spare_server = $protocol.'://'.$hostname;
886: }
887: }
888: }
889: return $spare_server;
890: }
891:
892: sub compare_server_load {
893: my ($try_server, $spare_server, $lowest_load, $required) = @_;
894:
895: if ($required) {
896: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
897: my $remoterev = &get_server_loncaparev(undef,$try_server);
898: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
899: if (($major eq '' && $minor eq '') ||
900: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
901: return ($spare_server,$lowest_load);
902: }
903: }
904:
905: my $loadans = &reply('load', $try_server);
906: my $userloadans = &reply('userload',$try_server);
907:
908: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
909: return ($spare_server, $lowest_load); #didn't get a number from the server
910: }
911:
912: my $load;
913: if ($loadans =~ /\d/) {
914: if ($userloadans =~ /\d/) {
915: #both are numbers, pick the bigger one
916: $load = ($loadans > $userloadans) ? $loadans
917: : $userloadans;
918: } else {
919: $load = $loadans;
920: }
921: } else {
922: $load = $userloadans;
923: }
924:
925: if (($load =~ /\d/) && ($load < $lowest_load)) {
926: $spare_server = $try_server;
927: $lowest_load = $load;
928: }
929: return ($spare_server,$lowest_load);
930: }
931:
932: # --------------------------- ask offload servers if user already has a session
933: sub find_existing_session {
934: my ($udom,$uname) = @_;
935: my $spareshash = &this_host_spares($udom);
936: if (ref($spareshash) eq 'HASH') {
937: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
938: foreach my $try_server (@{ $spareshash->{'primary'} }) {
939: return $try_server if (&has_user_session($try_server, $udom, $uname));
940: }
941: }
942: if (ref($spareshash->{'default'}) eq 'ARRAY') {
943: foreach my $try_server (@{ $spareshash->{'default'} }) {
944: return $try_server if (&has_user_session($try_server, $udom, $uname));
945: }
946: }
947: }
948: return;
949: }
950:
951: # -------------------------------- ask if server already has a session for user
952: sub has_user_session {
953: my ($lonid,$udom,$uname) = @_;
954: my $result = &reply(join(':','userhassession',
955: map {&escape($_)} ($udom,$uname)),$lonid);
956: return 1 if ($result eq 'ok');
957:
958: return 0;
959: }
960:
961: # --------- determine least loaded server in a user's domain which allows login
962:
963: sub choose_server {
964: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
965: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
966: my %servers = &get_servers($udom);
967: my $lowest_load = 30000;
968: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
969: if ($skiploadbal) {
970: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
971: unless (defined($cached)) {
972: my $cachetime = 60*60*24;
973: my %domconfig =
974: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
975: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
976: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
977: $cachetime);
978: }
979: }
980: }
981: foreach my $lonhost (keys(%servers)) {
982: if ($skiploadbal) {
983: if (ref($balancers) eq 'HASH') {
984: next if (exists($balancers->{$lonhost}));
985: }
986: }
987: my $loginvia;
988: if ($checkloginvia) {
989: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
990: if ($loginvia) {
991: my ($server,$path) = split(/:/,$loginvia);
992: ($login_host, $lowest_load) =
993: &compare_server_load($server, $login_host, $lowest_load, $required);
994: if ($login_host eq $server) {
995: $portal_path = $path;
996: $isredirect = 1;
997: }
998: } else {
999: ($login_host, $lowest_load) =
1000: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1001: if ($login_host eq $lonhost) {
1002: $portal_path = '';
1003: $isredirect = '';
1004: }
1005: }
1006: } else {
1007: ($login_host, $lowest_load) =
1008: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1009: }
1010: }
1011: if ($login_host ne '') {
1012: $hostname = &hostname($login_host);
1013: }
1014: return ($login_host,$hostname,$portal_path,$isredirect);
1015: }
1016:
1017: # --------------------------------------------- Try to change a user's password
1018:
1019: sub changepass {
1020: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1021: $currentpass = &escape($currentpass);
1022: $newpass = &escape($newpass);
1023: my $lonhost = $perlvar{'lonHostID'};
1024: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1025: $server);
1026: if (! $answer) {
1027: &logthis("No reply on password change request to $server ".
1028: "by $uname in domain $udom.");
1029: } elsif ($answer =~ "^ok") {
1030: &logthis("$uname in $udom successfully changed their password ".
1031: "on $server.");
1032: } elsif ($answer =~ "^pwchange_failure") {
1033: &logthis("$uname in $udom was unable to change their password ".
1034: "on $server. The action was blocked by either lcpasswd ".
1035: "or pwchange");
1036: } elsif ($answer =~ "^non_authorized") {
1037: &logthis("$uname in $udom did not get their password correct when ".
1038: "attempting to change it on $server.");
1039: } elsif ($answer =~ "^auth_mode_error") {
1040: &logthis("$uname in $udom attempted to change their password despite ".
1041: "not being locally or internally authenticated on $server.");
1042: } elsif ($answer =~ "^unknown_user") {
1043: &logthis("$uname in $udom attempted to change their password ".
1044: "on $server but were unable to because $server is not ".
1045: "their home server.");
1046: } elsif ($answer =~ "^refused") {
1047: &logthis("$server refused to change $uname in $udom password because ".
1048: "it was sent an unencrypted request to change the password.");
1049: } elsif ($answer =~ "invalid_client") {
1050: &logthis("$server refused to change $uname in $udom password because ".
1051: "it was a reset by e-mail originating from an invalid server.");
1052: }
1053: return $answer;
1054: }
1055:
1056: # ----------------------- Try to determine user's current authentication scheme
1057:
1058: sub queryauthenticate {
1059: my ($uname,$udom)=@_;
1060: my $uhome=&homeserver($uname,$udom);
1061: if (!$uhome) {
1062: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1063: return 'no_host';
1064: }
1065: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1066: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1067: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1068: }
1069: return $answer;
1070: }
1071:
1072: # --------- Try to authenticate user from domain's lib servers (first this one)
1073:
1074: sub authenticate {
1075: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1076: $upass=&escape($upass);
1077: $uname= &LONCAPA::clean_username($uname);
1078: my $uhome=&homeserver($uname,$udom,1);
1079: my $newhome;
1080: if ((!$uhome) || ($uhome eq 'no_host')) {
1081: # Maybe the machine was offline and only re-appeared again recently?
1082: &reconlonc();
1083: # One more
1084: $uhome=&homeserver($uname,$udom,1);
1085: if (($uhome eq 'no_host') && $checkdefauth) {
1086: if (defined(&domain($udom,'primary'))) {
1087: $newhome=&domain($udom,'primary');
1088: }
1089: if ($newhome ne '') {
1090: $uhome = $newhome;
1091: }
1092: }
1093: if ((!$uhome) || ($uhome eq 'no_host')) {
1094: &logthis("User $uname at $udom is unknown in authenticate");
1095: return 'no_host';
1096: }
1097: }
1098: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1099: if ($answer eq 'authorized') {
1100: if ($newhome) {
1101: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1102: return 'no_account_on_host';
1103: } else {
1104: &logthis("User $uname at $udom authorized by $uhome");
1105: return $uhome;
1106: }
1107: }
1108: if ($answer eq 'non_authorized') {
1109: &logthis("User $uname at $udom rejected by $uhome");
1110: return 'no_host';
1111: }
1112: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1113: return 'no_host';
1114: }
1115:
1116: sub can_host_session {
1117: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1118: my $canhost = 1;
1119: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1120: if (ref($remotesessions) eq 'HASH') {
1121: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1122: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1123: $canhost = 0;
1124: } else {
1125: $canhost = 1;
1126: }
1127: }
1128: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1129: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1130: $canhost = 1;
1131: } else {
1132: $canhost = 0;
1133: }
1134: }
1135: if ($canhost) {
1136: if ($remotesessions->{'version'} ne '') {
1137: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1138: if ($reqmajor ne '' && $reqminor ne '') {
1139: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1140: my $major = $1;
1141: my $minor = $2;
1142: if (($major < $reqmajor ) ||
1143: (($major == $reqmajor) && ($minor < $reqminor))) {
1144: $canhost = 0;
1145: }
1146: } else {
1147: $canhost = 0;
1148: }
1149: }
1150: }
1151: }
1152: }
1153: if ($canhost) {
1154: if (ref($hostedsessions) eq 'HASH') {
1155: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1156: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1157: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1158: if (($uint_dom ne '') &&
1159: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1160: $canhost = 0;
1161: } else {
1162: $canhost = 1;
1163: }
1164: }
1165: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1166: if (($uint_dom ne '') &&
1167: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1168: $canhost = 1;
1169: } else {
1170: $canhost = 0;
1171: }
1172: }
1173: }
1174: }
1175: return $canhost;
1176: }
1177:
1178: sub spare_can_host {
1179: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1180: my $canhost=1;
1181: my @intdoms;
1182: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1183: if (ref($internet_names) eq 'ARRAY') {
1184: @intdoms = @{$internet_names};
1185: }
1186: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1187: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1188: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1189: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1190: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1191: $canhost = &can_host_session($udom,$try_server,$remoterev,
1192: $remotesessions,
1193: $defdomdefaults{'hostedsessions'});
1194: }
1195: return $canhost;
1196: }
1197:
1198: sub this_host_spares {
1199: my ($dom) = @_;
1200: my ($dom_in_use,$lonhost_in_use,$result);
1201: my @hosts = ¤t_machine_ids();
1202: foreach my $lonhost (@hosts) {
1203: if (&host_domain($lonhost) eq $dom) {
1204: $dom_in_use = $dom;
1205: $lonhost_in_use = $lonhost;
1206: last;
1207: }
1208: }
1209: if ($dom_in_use ne '') {
1210: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1211: }
1212: if (ref($result) ne 'HASH') {
1213: $lonhost_in_use = $perlvar{'lonHostID'};
1214: $dom_in_use = &host_domain($lonhost_in_use);
1215: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1216: if (ref($result) ne 'HASH') {
1217: $result = \%spareid;
1218: }
1219: }
1220: return $result;
1221: }
1222:
1223: sub spares_for_offload {
1224: my ($dom_in_use,$lonhost_in_use) = @_;
1225: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1226: if (defined($cached)) {
1227: return $result;
1228: } else {
1229: my $cachetime = 60*60*24;
1230: my %domconfig =
1231: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1232: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1233: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1234: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1235: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1236: }
1237: }
1238: }
1239: }
1240: return;
1241: }
1242:
1243: sub get_lonbalancer_config {
1244: my ($servers) = @_;
1245: my ($currbalancer,$currtargets);
1246: if (ref($servers) eq 'HASH') {
1247: foreach my $server (keys(%{$servers})) {
1248: my %what = (
1249: spareid => 1,
1250: perlvar => 1,
1251: );
1252: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1253: if ($result eq 'ok') {
1254: if (ref($returnhash) eq 'HASH') {
1255: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1256: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1257: $currbalancer = $server;
1258: $currtargets = {};
1259: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1260: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1261: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1262: }
1263: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1264: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1265: }
1266: }
1267: last;
1268: }
1269: }
1270: }
1271: }
1272: }
1273: }
1274: return ($currbalancer,$currtargets);
1275: }
1276:
1277: sub check_loadbalancing {
1278: my ($uname,$udom) = @_;
1279: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1280: $rule_in_effect,$offloadto,$otherserver);
1281: my $lonhost = $perlvar{'lonHostID'};
1282: my @hosts = ¤t_machine_ids();
1283: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1284: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1285: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1286: my $serverhomedom = &host_domain($lonhost);
1287:
1288: my $cachetime = 60*60*24;
1289:
1290: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1291: $dom_in_use = $udom;
1292: $homeintdom = 1;
1293: } else {
1294: $dom_in_use = $serverhomedom;
1295: }
1296: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1297: unless (defined($cached)) {
1298: my %domconfig =
1299: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1300: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1301: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1302: }
1303: }
1304: if (ref($result) eq 'HASH') {
1305: ($is_balancer,$currtargets,$currrules) =
1306: &check_balancer_result($result,@hosts);
1307: if ($is_balancer) {
1308: if (ref($currrules) eq 'HASH') {
1309: if ($homeintdom) {
1310: if ($uname ne '') {
1311: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1312: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1313: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1314: $rule_in_effect = $currrules->{'_LC_author'};
1315: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1316: $rule_in_effect = $currrules->{'_LC_adv'}
1317: }
1318: }
1319: if ($rule_in_effect eq '') {
1320: my %userenv = &userenvironment($udom,$uname,'inststatus');
1321: if ($userenv{'inststatus'} ne '') {
1322: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1323: my ($othertitle,$usertypes,$types) =
1324: &Apache::loncommon::sorted_inst_types($udom);
1325: if (ref($types) eq 'ARRAY') {
1326: foreach my $type (@{$types}) {
1327: if (grep(/^\Q$type\E$/,@statuses)) {
1328: if (exists($currrules->{$type})) {
1329: $rule_in_effect = $currrules->{$type};
1330: }
1331: }
1332: }
1333: }
1334: } else {
1335: if (exists($currrules->{'default'})) {
1336: $rule_in_effect = $currrules->{'default'};
1337: }
1338: }
1339: }
1340: } else {
1341: if (exists($currrules->{'default'})) {
1342: $rule_in_effect = $currrules->{'default'};
1343: }
1344: }
1345: } else {
1346: if ($currrules->{'_LC_external'} ne '') {
1347: $rule_in_effect = $currrules->{'_LC_external'};
1348: }
1349: }
1350: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1351: $uname,$udom);
1352: }
1353: }
1354: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1355: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1356: unless (defined($cached)) {
1357: my %domconfig =
1358: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1359: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1360: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1361: }
1362: }
1363: if (ref($result) eq 'HASH') {
1364: ($is_balancer,$currtargets,$currrules) =
1365: &check_balancer_result($result,@hosts);
1366: if ($is_balancer) {
1367: if (ref($currrules) eq 'HASH') {
1368: if ($currrules->{'_LC_internetdom'} ne '') {
1369: $rule_in_effect = $currrules->{'_LC_internetdom'};
1370: }
1371: }
1372: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1373: $uname,$udom);
1374: }
1375: } else {
1376: if ($perlvar{'lonBalancer'} eq 'yes') {
1377: $is_balancer = 1;
1378: $offloadto = &this_host_spares($dom_in_use);
1379: }
1380: }
1381: } else {
1382: if ($perlvar{'lonBalancer'} eq 'yes') {
1383: $is_balancer = 1;
1384: $offloadto = &this_host_spares($dom_in_use);
1385: }
1386: }
1387: if ($is_balancer) {
1388: my $lowest_load = 30000;
1389: if (ref($offloadto) eq 'HASH') {
1390: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1391: foreach my $try_server (@{$offloadto->{'primary'}}) {
1392: ($otherserver,$lowest_load) =
1393: &compare_server_load($try_server,$otherserver,$lowest_load);
1394: }
1395: }
1396: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1397:
1398: if (!$found_server) {
1399: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1400: foreach my $try_server (@{$offloadto->{'default'}}) {
1401: ($otherserver,$lowest_load) =
1402: &compare_server_load($try_server,$otherserver,$lowest_load);
1403: }
1404: }
1405: }
1406: } elsif (ref($offloadto) eq 'ARRAY') {
1407: if (@{$offloadto} == 1) {
1408: $otherserver = $offloadto->[0];
1409: } elsif (@{$offloadto} > 1) {
1410: foreach my $try_server (@{$offloadto}) {
1411: ($otherserver,$lowest_load) =
1412: &compare_server_load($try_server,$otherserver,$lowest_load);
1413: }
1414: }
1415: }
1416: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1417: $is_balancer = 0;
1418: if ($uname ne '' && $udom ne '') {
1419: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1420:
1421: &appenv({'user.loadbalexempt' => $lonhost,
1422: 'user.loadbalcheck.time' => time});
1423: }
1424: }
1425: }
1426: }
1427: return ($is_balancer,$otherserver);
1428: }
1429:
1430: sub check_balancer_result {
1431: my ($result,@hosts) = @_;
1432: my ($is_balancer,$currtargets,$currrules);
1433: if (ref($result) eq 'HASH') {
1434: if ($result->{'lonhost'} ne '') {
1435: my $currbalancer = $result->{'lonhost'};
1436: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1437: $is_balancer = 1;
1438: $currtargets = $result->{'targets'};
1439: $currrules = $result->{'rules'};
1440: }
1441: } else {
1442: foreach my $key (keys(%{$result})) {
1443: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1444: (ref($result->{$key}) eq 'HASH')) {
1445: $is_balancer = 1;
1446: $currrules = $result->{$key}{'rules'};
1447: $currtargets = $result->{$key}{'targets'};
1448: last;
1449: }
1450: }
1451: }
1452: }
1453: return ($is_balancer,$currtargets,$currrules);
1454: }
1455:
1456: sub get_loadbalancer_targets {
1457: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1458: my $offloadto;
1459: if ($rule_in_effect eq 'none') {
1460: return [$perlvar{'lonHostID'}];
1461: } elsif ($rule_in_effect eq '') {
1462: $offloadto = $currtargets;
1463: } else {
1464: if ($rule_in_effect eq 'homeserver') {
1465: my $homeserver = &homeserver($uname,$udom);
1466: if ($homeserver ne 'no_host') {
1467: $offloadto = [$homeserver];
1468: }
1469: } elsif ($rule_in_effect eq 'externalbalancer') {
1470: my %domconfig =
1471: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1472: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1473: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1474: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1475: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1476: }
1477: }
1478: } else {
1479: my %servers = &internet_dom_servers($udom);
1480: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1481: if (&hostname($remotebalancer) ne '') {
1482: $offloadto = [$remotebalancer];
1483: }
1484: }
1485: } elsif (&hostname($rule_in_effect) ne '') {
1486: $offloadto = [$rule_in_effect];
1487: }
1488: }
1489: return $offloadto;
1490: }
1491:
1492: sub internet_dom_servers {
1493: my ($dom) = @_;
1494: my (%uniqservers,%servers);
1495: my $primaryserver = &hostname(&domain($dom,'primary'));
1496: my @machinedoms = &machine_domains($primaryserver);
1497: foreach my $mdom (@machinedoms) {
1498: my %currservers = %servers;
1499: my %server = &get_servers($mdom);
1500: %servers = (%currservers,%server);
1501: }
1502: my %by_hostname;
1503: foreach my $id (keys(%servers)) {
1504: push(@{$by_hostname{$servers{$id}}},$id);
1505: }
1506: foreach my $hostname (sort(keys(%by_hostname))) {
1507: if (@{$by_hostname{$hostname}} > 1) {
1508: my $match = 0;
1509: foreach my $id (@{$by_hostname{$hostname}}) {
1510: if (&host_domain($id) eq $dom) {
1511: $uniqservers{$id} = $hostname;
1512: $match = 1;
1513: }
1514: }
1515: unless ($match) {
1516: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1517: }
1518: } else {
1519: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1520: }
1521: }
1522: return %uniqservers;
1523: }
1524:
1525: # ---------------------- Find the homebase for a user from domain's lib servers
1526:
1527: my %homecache;
1528: sub homeserver {
1529: my ($uname,$udom,$ignoreBadCache)=@_;
1530: my $index="$uname:$udom";
1531:
1532: if (exists($homecache{$index})) { return $homecache{$index}; }
1533:
1534: my %servers = &get_servers($udom,'library');
1535: foreach my $tryserver (keys(%servers)) {
1536: next if ($ignoreBadCache ne 'true' &&
1537: exists($badServerCache{$tryserver}));
1538:
1539: my $answer=reply("home:$udom:$uname",$tryserver);
1540: if ($answer eq 'found') {
1541: delete($badServerCache{$tryserver});
1542: return $homecache{$index}=$tryserver;
1543: } elsif ($answer eq 'no_host') {
1544: $badServerCache{$tryserver}=1;
1545: }
1546: }
1547: return 'no_host';
1548: }
1549:
1550: # ------------------------------------- Find the usernames behind a list of IDs
1551:
1552: sub idget {
1553: my ($udom,@ids)=@_;
1554: my %returnhash=();
1555:
1556: my %servers = &get_servers($udom,'library');
1557: foreach my $tryserver (keys(%servers)) {
1558: my $idlist=join('&',@ids);
1559: $idlist=~tr/A-Z/a-z/;
1560: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1561: my @answer=();
1562: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1563: @answer=split(/\&/,$reply);
1564: } ;
1565: my $i;
1566: for ($i=0;$i<=$#ids;$i++) {
1567: if ($answer[$i]) {
1568: $returnhash{$ids[$i]}=$answer[$i];
1569: }
1570: }
1571: }
1572: return %returnhash;
1573: }
1574:
1575: # ------------------------------------- Find the IDs behind a list of usernames
1576:
1577: sub idrget {
1578: my ($udom,@unames)=@_;
1579: my %returnhash=();
1580: foreach my $uname (@unames) {
1581: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1582: }
1583: return %returnhash;
1584: }
1585:
1586: # ------------------------------- Store away a list of names and associated IDs
1587:
1588: sub idput {
1589: my ($udom,%ids)=@_;
1590: my %servers=();
1591: foreach my $uname (keys(%ids)) {
1592: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1593: my $uhom=&homeserver($uname,$udom);
1594: if ($uhom ne 'no_host') {
1595: my $id=&escape($ids{$uname});
1596: $id=~tr/A-Z/a-z/;
1597: my $esc_unam=&escape($uname);
1598: if ($servers{$uhom}) {
1599: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1600: } else {
1601: $servers{$uhom}=$id.'='.$esc_unam;
1602: }
1603: }
1604: }
1605: foreach my $server (keys(%servers)) {
1606: &critical('idput:'.$udom.':'.$servers{$server},$server);
1607: }
1608: }
1609:
1610: # ---------------------------------------- Delete unwanted IDs from ids.db file
1611:
1612: sub iddel {
1613: my ($udom,$idshashref,$uhome)=@_;
1614: my %result=();
1615: unless (ref($idshashref) eq 'HASH') {
1616: return %result;
1617: }
1618: my %servers=();
1619: while (my ($id,$uname) = each(%{$idshashref})) {
1620: my $uhom;
1621: if ($uhome) {
1622: $uhom = $uhome;
1623: } else {
1624: $uhom=&homeserver($uname,$udom);
1625: }
1626: if ($uhom ne 'no_host') {
1627: if ($servers{$uhom}) {
1628: $servers{$uhom}.='&'.&escape($id);
1629: } else {
1630: $servers{$uhom}=&escape($id);
1631: }
1632: }
1633: }
1634: foreach my $server (keys(%servers)) {
1635: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1636: }
1637: return %result;
1638: }
1639:
1640: # ------------------------------dump from db file owned by domainconfig user
1641: sub dump_dom {
1642: my ($namespace, $udom, $regexp) = @_;
1643:
1644: $udom ||= $env{'user.domain'};
1645:
1646: return () unless $udom;
1647:
1648: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1649: }
1650:
1651: # ------------------------------------------ get items from domain db files
1652:
1653: sub get_dom {
1654: my ($namespace,$storearr,$udom,$uhome)=@_;
1655: return if ($udom eq 'public');
1656: my $items='';
1657: foreach my $item (@$storearr) {
1658: $items.=&escape($item).'&';
1659: }
1660: $items=~s/\&$//;
1661: if (!$udom) {
1662: $udom=$env{'user.domain'};
1663: return if ($udom eq 'public');
1664: if (defined(&domain($udom,'primary'))) {
1665: $uhome=&domain($udom,'primary');
1666: } else {
1667: undef($uhome);
1668: }
1669: } else {
1670: if (!$uhome) {
1671: if (defined(&domain($udom,'primary'))) {
1672: $uhome=&domain($udom,'primary');
1673: }
1674: }
1675: }
1676: if ($udom && $uhome && ($uhome ne 'no_host')) {
1677: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1678: my %returnhash;
1679: if ($rep eq '' || $rep =~ /^error: 2 /) {
1680: return %returnhash;
1681: }
1682: my @pairs=split(/\&/,$rep);
1683: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1684: return @pairs;
1685: }
1686: my $i=0;
1687: foreach my $item (@$storearr) {
1688: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1689: $i++;
1690: }
1691: return %returnhash;
1692: } else {
1693: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1694: }
1695: }
1696:
1697: # -------------------------------------------- put items in domain db files
1698:
1699: sub put_dom {
1700: my ($namespace,$storehash,$udom,$uhome)=@_;
1701: if (!$udom) {
1702: $udom=$env{'user.domain'};
1703: if (defined(&domain($udom,'primary'))) {
1704: $uhome=&domain($udom,'primary');
1705: } else {
1706: undef($uhome);
1707: }
1708: } else {
1709: if (!$uhome) {
1710: if (defined(&domain($udom,'primary'))) {
1711: $uhome=&domain($udom,'primary');
1712: }
1713: }
1714: }
1715: if ($udom && $uhome && ($uhome ne 'no_host')) {
1716: my $items='';
1717: foreach my $item (keys(%$storehash)) {
1718: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1719: }
1720: $items=~s/\&$//;
1721: return &reply("putdom:$udom:$namespace:$items",$uhome);
1722: } else {
1723: &logthis("put_dom failed - no homeserver and/or domain");
1724: }
1725: }
1726:
1727: # --------------------- newput for items in db file owned by domainconfig user
1728: sub newput_dom {
1729: my ($namespace,$storehash,$udom) = @_;
1730: my $result;
1731: if (!$udom) {
1732: $udom=$env{'user.domain'};
1733: }
1734: if ($udom) {
1735: my $uname = &get_domainconfiguser($udom);
1736: $result = &newput($namespace,$storehash,$udom,$uname);
1737: }
1738: return $result;
1739: }
1740:
1741: # --------------------- delete for items in db file owned by domainconfig user
1742: sub del_dom {
1743: my ($namespace,$storearr,$udom)=@_;
1744: if (ref($storearr) eq 'ARRAY') {
1745: if (!$udom) {
1746: $udom=$env{'user.domain'};
1747: }
1748: if ($udom) {
1749: my $uname = &get_domainconfiguser($udom);
1750: return &del($namespace,$storearr,$udom,$uname);
1751: }
1752: }
1753: }
1754:
1755: # ----------------------------------construct domainconfig user for a domain
1756: sub get_domainconfiguser {
1757: my ($udom) = @_;
1758: return $udom.'-domainconfig';
1759: }
1760:
1761: sub retrieve_inst_usertypes {
1762: my ($udom) = @_;
1763: my (%returnhash,@order);
1764: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1765: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1766: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1767: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
1768: } else {
1769: if (defined(&domain($udom,'primary'))) {
1770: my $uhome=&domain($udom,'primary');
1771: my $rep=&reply("inst_usertypes:$udom",$uhome);
1772: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1773: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
1774: return (\%returnhash,\@order);
1775: }
1776: my ($hashitems,$orderitems) = split(/:/,$rep);
1777: my @pairs=split(/\&/,$hashitems);
1778: foreach my $item (@pairs) {
1779: my ($key,$value)=split(/=/,$item,2);
1780: $key = &unescape($key);
1781: next if ($key =~ /^error: 2 /);
1782: $returnhash{$key}=&thaw_unescape($value);
1783: }
1784: my @esc_order = split(/\&/,$orderitems);
1785: foreach my $item (@esc_order) {
1786: push(@order,&unescape($item));
1787: }
1788: } else {
1789: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
1790: }
1791: return (\%returnhash,\@order);
1792: }
1793: }
1794:
1795: sub is_domainimage {
1796: my ($url) = @_;
1797: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1798: if (&domain($1) ne '') {
1799: return '1';
1800: }
1801: }
1802: return;
1803: }
1804:
1805: sub inst_directory_query {
1806: my ($srch) = @_;
1807: my $udom = $srch->{'srchdomain'};
1808: my %results;
1809: my $homeserver = &domain($udom,'primary');
1810: my $outcome;
1811: if ($homeserver ne '') {
1812: my $queryid=&reply("querysend:instdirsearch:".
1813: &escape($srch->{'srchby'}).':'.
1814: &escape($srch->{'srchterm'}).':'.
1815: &escape($srch->{'srchtype'}),$homeserver);
1816: my $host=&hostname($homeserver);
1817: if ($queryid !~/^\Q$host\E\_/) {
1818: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1819: return;
1820: }
1821: my $response = &get_query_reply($queryid);
1822: my $maxtries = 5;
1823: my $tries = 1;
1824: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1825: $response = &get_query_reply($queryid);
1826: $tries ++;
1827: }
1828:
1829: if (!&error($response) && $response ne 'refused') {
1830: if ($response eq 'unavailable') {
1831: $outcome = $response;
1832: } else {
1833: $outcome = 'ok';
1834: my @matches = split(/\n/,$response);
1835: foreach my $match (@matches) {
1836: my ($key,$value) = split(/=/,$match);
1837: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1838: }
1839: }
1840: }
1841: }
1842: return ($outcome,%results);
1843: }
1844:
1845: sub usersearch {
1846: my ($srch) = @_;
1847: my $dom = $srch->{'srchdomain'};
1848: my %results;
1849: my %libserv = &all_library();
1850: my $query = 'usersearch';
1851: foreach my $tryserver (keys(%libserv)) {
1852: if (&host_domain($tryserver) eq $dom) {
1853: my $host=&hostname($tryserver);
1854: my $queryid=
1855: &reply("querysend:".&escape($query).':'.
1856: &escape($srch->{'srchby'}).':'.
1857: &escape($srch->{'srchtype'}).':'.
1858: &escape($srch->{'srchterm'}),$tryserver);
1859: if ($queryid !~/^\Q$host\E\_/) {
1860: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1861: next;
1862: }
1863: my $reply = &get_query_reply($queryid);
1864: my $maxtries = 1;
1865: my $tries = 1;
1866: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1867: $reply = &get_query_reply($queryid);
1868: $tries ++;
1869: }
1870: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1871: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1872: } else {
1873: my @matches;
1874: if ($reply =~ /\n/) {
1875: @matches = split(/\n/,$reply);
1876: } else {
1877: @matches = split(/\&/,$reply);
1878: }
1879: foreach my $match (@matches) {
1880: my ($uname,$udom,%userhash);
1881: foreach my $entry (split(/:/,$match)) {
1882: my ($key,$value) =
1883: map {&unescape($_);} split(/=/,$entry);
1884: $userhash{$key} = $value;
1885: if ($key eq 'username') {
1886: $uname = $value;
1887: } elsif ($key eq 'domain') {
1888: $udom = $value;
1889: }
1890: }
1891: $results{$uname.':'.$udom} = \%userhash;
1892: }
1893: }
1894: }
1895: }
1896: return %results;
1897: }
1898:
1899: sub get_instuser {
1900: my ($udom,$uname,$id) = @_;
1901: my $homeserver = &domain($udom,'primary');
1902: my ($outcome,%results);
1903: if ($homeserver ne '') {
1904: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1905: &escape($id).':'.&escape($udom),$homeserver);
1906: my $host=&hostname($homeserver);
1907: if ($queryid !~/^\Q$host\E\_/) {
1908: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1909: return;
1910: }
1911: my $response = &get_query_reply($queryid);
1912: my $maxtries = 5;
1913: my $tries = 1;
1914: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1915: $response = &get_query_reply($queryid);
1916: $tries ++;
1917: }
1918: if (!&error($response) && $response ne 'refused') {
1919: if ($response eq 'unavailable') {
1920: $outcome = $response;
1921: } else {
1922: $outcome = 'ok';
1923: my @matches = split(/\n/,$response);
1924: foreach my $match (@matches) {
1925: my ($key,$value) = split(/=/,$match);
1926: $results{&unescape($key)} = &thaw_unescape($value);
1927: }
1928: }
1929: }
1930: }
1931: my %userinfo;
1932: if (ref($results{$uname}) eq 'HASH') {
1933: %userinfo = %{$results{$uname}};
1934: }
1935: return ($outcome,%userinfo);
1936: }
1937:
1938: sub inst_rulecheck {
1939: my ($udom,$uname,$id,$item,$rules) = @_;
1940: my %returnhash;
1941: if ($udom ne '') {
1942: if (ref($rules) eq 'ARRAY') {
1943: @{$rules} = map {&escape($_);} (@{$rules});
1944: my $rulestr = join(':',@{$rules});
1945: my $homeserver=&domain($udom,'primary');
1946: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1947: my $response;
1948: if ($item eq 'username') {
1949: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1950: ':'.&escape($uname).':'.$rulestr,
1951: $homeserver));
1952: } elsif ($item eq 'id') {
1953: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1954: ':'.&escape($id).':'.$rulestr,
1955: $homeserver));
1956: } elsif ($item eq 'selfcreate') {
1957: $response=&unescape(&reply('instselfcreatecheck:'.
1958: &escape($udom).':'.&escape($uname).
1959: ':'.$rulestr,$homeserver));
1960: }
1961: if ($response ne 'refused') {
1962: my @pairs=split(/\&/,$response);
1963: foreach my $item (@pairs) {
1964: my ($key,$value)=split(/=/,$item,2);
1965: $key = &unescape($key);
1966: next if ($key =~ /^error: 2 /);
1967: $returnhash{$key}=&thaw_unescape($value);
1968: }
1969: }
1970: }
1971: }
1972: }
1973: return %returnhash;
1974: }
1975:
1976: sub inst_userrules {
1977: my ($udom,$check) = @_;
1978: my (%ruleshash,@ruleorder);
1979: if ($udom ne '') {
1980: my $homeserver=&domain($udom,'primary');
1981: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1982: my $response;
1983: if ($check eq 'id') {
1984: $response=&reply('instidrules:'.&escape($udom),
1985: $homeserver);
1986: } elsif ($check eq 'email') {
1987: $response=&reply('instemailrules:'.&escape($udom),
1988: $homeserver);
1989: } else {
1990: $response=&reply('instuserrules:'.&escape($udom),
1991: $homeserver);
1992: }
1993: if (($response ne 'refused') && ($response ne 'error') &&
1994: ($response ne 'unknown_cmd') &&
1995: ($response ne 'no_such_host')) {
1996: my ($hashitems,$orderitems) = split(/:/,$response);
1997: my @pairs=split(/\&/,$hashitems);
1998: foreach my $item (@pairs) {
1999: my ($key,$value)=split(/=/,$item,2);
2000: $key = &unescape($key);
2001: next if ($key =~ /^error: 2 /);
2002: $ruleshash{$key}=&thaw_unescape($value);
2003: }
2004: my @esc_order = split(/\&/,$orderitems);
2005: foreach my $item (@esc_order) {
2006: push(@ruleorder,&unescape($item));
2007: }
2008: }
2009: }
2010: }
2011: return (\%ruleshash,\@ruleorder);
2012: }
2013:
2014: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2015:
2016: sub get_domain_defaults {
2017: my ($domain,$ignore_cache) = @_;
2018: return if (($domain eq '') || ($domain eq 'public'));
2019: my $cachetime = 60*60*24;
2020: unless ($ignore_cache) {
2021: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2022: if (defined($cached)) {
2023: if (ref($result) eq 'HASH') {
2024: return %{$result};
2025: }
2026: }
2027: }
2028: my %domdefaults;
2029: my %domconfig =
2030: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2031: 'requestcourses','inststatus',
2032: 'coursedefaults','usersessions',
2033: 'requestauthor','selfenrollment',
2034: 'coursecategories'],$domain);
2035: my @coursetypes = ('official','unofficial','community','textbook');
2036: if (ref($domconfig{'defaults'}) eq 'HASH') {
2037: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2038: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2039: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2040: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2041: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2042: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2043: } else {
2044: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2045: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2046: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2047: }
2048: if (ref($domconfig{'quotas'}) eq 'HASH') {
2049: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2050: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2051: } else {
2052: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2053: }
2054: my @usertools = ('aboutme','blog','webdav','portfolio');
2055: foreach my $item (@usertools) {
2056: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2057: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2058: }
2059: }
2060: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2061: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2062: }
2063: }
2064: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2065: foreach my $item ('official','unofficial','community','textbook') {
2066: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2067: }
2068: }
2069: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2070: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2071: }
2072: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2073: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2074: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2075: }
2076: }
2077: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2078: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2079: foreach my $type (@coursetypes) {
2080: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2081: unless ($type eq 'community') {
2082: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2083: }
2084: }
2085: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2086: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2087: }
2088: }
2089: }
2090: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2091: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2092: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2093: }
2094: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2095: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2096: }
2097: }
2098: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2099: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2100: my @settings = ('types','registered','enroll_dates','access_dates','section',
2101: 'approval','limit');
2102: foreach my $type (@coursetypes) {
2103: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2104: my @mgrdc = ();
2105: foreach my $item (@settings) {
2106: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2107: push(@mgrdc,$item);
2108: }
2109: }
2110: if (@mgrdc) {
2111: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2112: }
2113: }
2114: }
2115: }
2116: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2117: foreach my $type (@coursetypes) {
2118: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2119: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2120: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2121: }
2122: }
2123: }
2124: }
2125: }
2126: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2127: $domdefaults{'catauth'} = 'std';
2128: $domdefaults{'catunauth'} = 'std';
2129: if ($domconfig{'coursecategories'}{'auth'}) {
2130: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2131: }
2132: if ($domconfig{'coursecategories'}{'unauth'}) {
2133: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2134: }
2135: }
2136: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2137: return %domdefaults;
2138: }
2139:
2140: # --------------------------------------------------- Assign a key to a student
2141:
2142: sub assign_access_key {
2143: #
2144: # a valid key looks like uname:udom#comments
2145: # comments are being appended
2146: #
2147: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2148: $kdom=
2149: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2150: $knum=
2151: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2152: $cdom=
2153: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2154: $cnum=
2155: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2156: $udom=$env{'user.name'} unless (defined($udom));
2157: $uname=$env{'user.domain'} unless (defined($uname));
2158: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2159: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2160: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2161: # assigned to this person
2162: # - this should not happen,
2163: # unless something went wrong
2164: # the first time around
2165: # ready to assign
2166: $logentry=$1.'; '.$logentry;
2167: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2168: $kdom,$knum) eq 'ok') {
2169: # key now belongs to user
2170: my $envkey='key.'.$cdom.'_'.$cnum;
2171: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2172: &appenv({'environment.'.$envkey => $ckey});
2173: return 'ok';
2174: } else {
2175: return
2176: 'error: Count not permanently assign key, will need to be re-entered later.';
2177: }
2178: } else {
2179: return 'error: Could not assign key, try again later.';
2180: }
2181: } elsif (!$existing{$ckey}) {
2182: # the key does not exist
2183: return 'error: The key does not exist';
2184: } else {
2185: # the key is somebody else's
2186: return 'error: The key is already in use';
2187: }
2188: }
2189:
2190: # ------------------------------------------ put an additional comment on a key
2191:
2192: sub comment_access_key {
2193: #
2194: # a valid key looks like uname:udom#comments
2195: # comments are being appended
2196: #
2197: my ($ckey,$cdom,$cnum,$logentry)=@_;
2198: $cdom=
2199: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2200: $cnum=
2201: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2202: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2203: if ($existing{$ckey}) {
2204: $existing{$ckey}.='; '.$logentry;
2205: # ready to assign
2206: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2207: $cdom,$cnum) eq 'ok') {
2208: return 'ok';
2209: } else {
2210: return 'error: Count not store comment.';
2211: }
2212: } else {
2213: # the key does not exist
2214: return 'error: The key does not exist';
2215: }
2216: }
2217:
2218: # ------------------------------------------------------ Generate a set of keys
2219:
2220: sub generate_access_keys {
2221: my ($number,$cdom,$cnum,$logentry)=@_;
2222: $cdom=
2223: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2224: $cnum=
2225: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2226: unless (&allowed('mky',$cdom)) { return 0; }
2227: unless (($cdom) && ($cnum)) { return 0; }
2228: if ($number>10000) { return 0; }
2229: sleep(2); # make sure don't get same seed twice
2230: srand(time()^($$+($$<<15))); # from "Programming Perl"
2231: my $total=0;
2232: for (my $i=1;$i<=$number;$i++) {
2233: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2234: sprintf("%lx",int(100000*rand)).'-'.
2235: sprintf("%lx",int(100000*rand));
2236: $newkey=~s/1/g/g; # folks mix up 1 and l
2237: $newkey=~s/0/h/g; # and also 0 and O
2238: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2239: if ($existing{$newkey}) {
2240: $i--;
2241: } else {
2242: if (&put('accesskeys',
2243: { $newkey => '# generated '.localtime().
2244: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2245: '; '.$logentry },
2246: $cdom,$cnum) eq 'ok') {
2247: $total++;
2248: }
2249: }
2250: }
2251: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2252: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2253: return $total;
2254: }
2255:
2256: # ------------------------------------------------------- Validate an accesskey
2257:
2258: sub validate_access_key {
2259: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2260: $cdom=
2261: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2262: $cnum=
2263: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2264: $udom=$env{'user.domain'} unless (defined($udom));
2265: $uname=$env{'user.name'} unless (defined($uname));
2266: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2267: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2268: }
2269:
2270: # ------------------------------------- Find the section of student in a course
2271: sub devalidate_getsection_cache {
2272: my ($udom,$unam,$courseid)=@_;
2273: my $hashid="$udom:$unam:$courseid";
2274: &devalidate_cache_new('getsection',$hashid);
2275: }
2276:
2277: sub courseid_to_courseurl {
2278: my ($courseid) = @_;
2279: #already url style courseid
2280: return $courseid if ($courseid =~ m{^/});
2281:
2282: if (exists($env{'course.'.$courseid.'.num'})) {
2283: my $cnum = $env{'course.'.$courseid.'.num'};
2284: my $cdom = $env{'course.'.$courseid.'.domain'};
2285: return "/$cdom/$cnum";
2286: }
2287:
2288: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2289: if (exists($courseinfo{'num'})) {
2290: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2291: }
2292:
2293: return undef;
2294: }
2295:
2296: sub getsection {
2297: my ($udom,$unam,$courseid)=@_;
2298: my $cachetime=1800;
2299:
2300: my $hashid="$udom:$unam:$courseid";
2301: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2302: if (defined($cached)) { return $result; }
2303:
2304: my %Pending;
2305: my %Expired;
2306: #
2307: # Each role can either have not started yet (pending), be active,
2308: # or have expired.
2309: #
2310: # If there is an active role, we are done.
2311: #
2312: # If there is more than one role which has not started yet,
2313: # choose the one which will start sooner
2314: # If there is one role which has not started yet, return it.
2315: #
2316: # If there is more than one expired role, choose the one which ended last.
2317: # If there is a role which has expired, return it.
2318: #
2319: $courseid = &courseid_to_courseurl($courseid);
2320: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2321: foreach my $key (keys(%roleshash)) {
2322: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2323: my $section=$1;
2324: if ($key eq $courseid.'_st') { $section=''; }
2325: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2326: my $now=time;
2327: if (defined($end) && $end && ($now > $end)) {
2328: $Expired{$end}=$section;
2329: next;
2330: }
2331: if (defined($start) && $start && ($now < $start)) {
2332: $Pending{$start}=$section;
2333: next;
2334: }
2335: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2336: }
2337: #
2338: # Presumedly there will be few matching roles from the above
2339: # loop and the sorting time will be negligible.
2340: if (scalar(keys(%Pending))) {
2341: my ($time) = sort {$a <=> $b} keys(%Pending);
2342: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2343: }
2344: if (scalar(keys(%Expired))) {
2345: my @sorted = sort {$a <=> $b} keys(%Expired);
2346: my $time = pop(@sorted);
2347: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2348: }
2349: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2350: }
2351:
2352: sub save_cache {
2353: &purge_remembered();
2354: #&Apache::loncommon::validate_page();
2355: undef(%env);
2356: undef($env_loaded);
2357: }
2358:
2359: my $to_remember=-1;
2360: my %remembered;
2361: my %accessed;
2362: my $kicks=0;
2363: my $hits=0;
2364: sub make_key {
2365: my ($name,$id) = @_;
2366: if (length($id) > 65
2367: && length(&escape($id)) > 200) {
2368: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2369: }
2370: return &escape($name.':'.$id);
2371: }
2372:
2373: sub devalidate_cache_new {
2374: my ($name,$id,$debug) = @_;
2375: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2376: $id=&make_key($name,$id);
2377: $memcache->delete($id);
2378: delete($remembered{$id});
2379: delete($accessed{$id});
2380: }
2381:
2382: sub is_cached_new {
2383: my ($name,$id,$debug) = @_;
2384: $id=&make_key($name,$id);
2385: if (exists($remembered{$id})) {
2386: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2387: $accessed{$id}=[&gettimeofday()];
2388: $hits++;
2389: return ($remembered{$id},1);
2390: }
2391: my $value = $memcache->get($id);
2392: if (!(defined($value))) {
2393: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2394: return (undef,undef);
2395: }
2396: if ($value eq '__undef__') {
2397: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2398: $value=undef;
2399: }
2400: &make_room($id,$value,$debug);
2401: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2402: return ($value,1);
2403: }
2404:
2405: sub do_cache_new {
2406: my ($name,$id,$value,$time,$debug) = @_;
2407: $id=&make_key($name,$id);
2408: my $setvalue=$value;
2409: if (!defined($setvalue)) {
2410: $setvalue='__undef__';
2411: }
2412: if (!defined($time) ) {
2413: $time=600;
2414: }
2415: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2416: my $result = $memcache->set($id,$setvalue,$time);
2417: if (! $result) {
2418: &logthis("caching of id -> $id failed");
2419: $memcache->disconnect_all();
2420: }
2421: # need to make a copy of $value
2422: &make_room($id,$value,$debug);
2423: return $value;
2424: }
2425:
2426: sub make_room {
2427: my ($id,$value,$debug)=@_;
2428:
2429: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2430: : $value;
2431: if ($to_remember<0) { return; }
2432: $accessed{$id}=[&gettimeofday()];
2433: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2434: my $to_kick;
2435: my $max_time=0;
2436: foreach my $other (keys(%accessed)) {
2437: if (&tv_interval($accessed{$other}) > $max_time) {
2438: $to_kick=$other;
2439: $max_time=&tv_interval($accessed{$other});
2440: }
2441: }
2442: delete($remembered{$to_kick});
2443: delete($accessed{$to_kick});
2444: $kicks++;
2445: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2446: return;
2447: }
2448:
2449: sub purge_remembered {
2450: #&logthis("Tossing ".scalar(keys(%remembered)));
2451: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2452: undef(%remembered);
2453: undef(%accessed);
2454: }
2455: # ------------------------------------- Read an entry from a user's environment
2456:
2457: sub userenvironment {
2458: my ($udom,$unam,@what)=@_;
2459: my $items;
2460: foreach my $item (@what) {
2461: $items.=&escape($item).'&';
2462: }
2463: $items=~s/\&$//;
2464: my %returnhash=();
2465: my $uhome = &homeserver($unam,$udom);
2466: unless ($uhome eq 'no_host') {
2467: my @answer=split(/\&/,
2468: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2469: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2470: return %returnhash;
2471: }
2472: my $i;
2473: for ($i=0;$i<=$#what;$i++) {
2474: $returnhash{$what[$i]}=&unescape($answer[$i]);
2475: }
2476: }
2477: return %returnhash;
2478: }
2479:
2480: # ---------------------------------------------------------- Get a studentphoto
2481: sub studentphoto {
2482: my ($udom,$unam,$ext) = @_;
2483: my $home=&Apache::lonnet::homeserver($unam,$udom);
2484: if (defined($env{'request.course.id'})) {
2485: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2486: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2487: return(&retrievestudentphoto($udom,$unam,$ext));
2488: } else {
2489: my ($result,$perm_reqd)=
2490: &Apache::lonnet::auto_photo_permission($unam,$udom);
2491: if ($result eq 'ok') {
2492: if (!($perm_reqd eq 'yes')) {
2493: return(&retrievestudentphoto($udom,$unam,$ext));
2494: }
2495: }
2496: }
2497: }
2498: } else {
2499: my ($result,$perm_reqd) =
2500: &Apache::lonnet::auto_photo_permission($unam,$udom);
2501: if ($result eq 'ok') {
2502: if (!($perm_reqd eq 'yes')) {
2503: return(&retrievestudentphoto($udom,$unam,$ext));
2504: }
2505: }
2506: }
2507: return '/adm/lonKaputt/lonlogo_broken.gif';
2508: }
2509:
2510: sub retrievestudentphoto {
2511: my ($udom,$unam,$ext,$type) = @_;
2512: my $home=&Apache::lonnet::homeserver($unam,$udom);
2513: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2514: if ($ret eq 'ok') {
2515: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2516: if ($type eq 'thumbnail') {
2517: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2518: }
2519: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2520: return $tokenurl;
2521: } else {
2522: if ($type eq 'thumbnail') {
2523: return '/adm/lonKaputt/genericstudent_tn.gif';
2524: } else {
2525: return '/adm/lonKaputt/lonlogo_broken.gif';
2526: }
2527: }
2528: }
2529:
2530: # -------------------------------------------------------------------- New chat
2531:
2532: sub chatsend {
2533: my ($newentry,$anon,$group)=@_;
2534: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2535: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2536: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2537: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2538: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2539: &escape($newentry)).':'.$group,$chome);
2540: }
2541:
2542: # ------------------------------------------ Find current version of a resource
2543:
2544: sub getversion {
2545: my $fname=&clutter(shift);
2546: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2547: return ¤tversion(&filelocation('',$fname));
2548: }
2549:
2550: sub currentversion {
2551: my $fname=shift;
2552: my $author=$fname;
2553: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2554: my ($udom,$uname)=split(/\//,$author);
2555: my $home=&homeserver($uname,$udom);
2556: if ($home eq 'no_host') {
2557: return -1;
2558: }
2559: my $answer=&reply("currentversion:$fname",$home);
2560: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2561: return -1;
2562: }
2563: return $answer;
2564: }
2565:
2566: #
2567: # Return special version number of resource if set by override, empty otherwise
2568: #
2569: sub usedversion {
2570: my $fname=shift;
2571: unless ($fname) { $fname=$env{'request.uri'}; }
2572: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2573: if ($urlversion) { return $urlversion; }
2574: return '';
2575: }
2576:
2577: # ----------------------------- Subscribe to a resource, return URL if possible
2578:
2579: sub subscribe {
2580: my $fname=shift;
2581: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2582: $fname=~s/[\n\r]//g;
2583: my $author=$fname;
2584: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2585: my ($udom,$uname)=split(/\//,$author);
2586: my $home=homeserver($uname,$udom);
2587: if ($home eq 'no_host') {
2588: return 'not_found';
2589: }
2590: my $answer=reply("sub:$fname",$home);
2591: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2592: $answer.=' by '.$home;
2593: }
2594: return $answer;
2595: }
2596:
2597: # -------------------------------------------------------------- Replicate file
2598:
2599: sub repcopy {
2600: my $filename=shift;
2601: $filename=~s/\/+/\//g;
2602: my $londocroot = $perlvar{'lonDocRoot'};
2603: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2604: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2605: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2606: $filename=~m{^/*(uploaded|editupload)/}) {
2607: return &repcopy_userfile($filename);
2608: }
2609: $filename=~s/[\n\r]//g;
2610: my $transname="$filename.in.transfer";
2611: # FIXME: this should flock
2612: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2613: my $remoteurl=subscribe($filename);
2614: if ($remoteurl =~ /^con_lost by/) {
2615: &logthis("Subscribe returned $remoteurl: $filename");
2616: return 'unavailable';
2617: } elsif ($remoteurl eq 'not_found') {
2618: #&logthis("Subscribe returned not_found: $filename");
2619: return 'not_found';
2620: } elsif ($remoteurl =~ /^rejected by/) {
2621: &logthis("Subscribe returned $remoteurl: $filename");
2622: return 'forbidden';
2623: } elsif ($remoteurl eq 'directory') {
2624: return 'ok';
2625: } else {
2626: my $author=$filename;
2627: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2628: my ($udom,$uname)=split(/\//,$author);
2629: my $home=homeserver($uname,$udom);
2630: unless ($home eq $perlvar{'lonHostID'}) {
2631: my @parts=split(/\//,$filename);
2632: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2633: if ($path ne "$londocroot/res") {
2634: &logthis("Malconfiguration for replication: $filename");
2635: return 'bad_request';
2636: }
2637: my $count;
2638: for ($count=5;$count<$#parts;$count++) {
2639: $path.="/$parts[$count]";
2640: if ((-e $path)!=1) {
2641: mkdir($path,0777);
2642: }
2643: }
2644: my $ua=new LWP::UserAgent;
2645: my $request=new HTTP::Request('GET',"$remoteurl");
2646: my $response=$ua->request($request,$transname);
2647: if ($response->is_error()) {
2648: unlink($transname);
2649: my $message=$response->status_line;
2650: &logthis("<font color=\"blue\">WARNING:"
2651: ." LWP get: $message: $filename</font>");
2652: return 'unavailable';
2653: } else {
2654: if ($remoteurl!~/\.meta$/) {
2655: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2656: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2657: if ($mresponse->is_error()) {
2658: unlink($filename.'.meta');
2659: &logthis(
2660: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2661: }
2662: }
2663: rename($transname,$filename);
2664: return 'ok';
2665: }
2666: }
2667: }
2668: }
2669:
2670: # ------------------------------------------------ Get server side include body
2671: sub ssi_body {
2672: my ($filelink,%form)=@_;
2673: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2674: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2675: }
2676: my $output='';
2677: my $response;
2678: if ($filelink=~/^https?\:/) {
2679: ($output,$response)=&externalssi($filelink);
2680: } else {
2681: $filelink .= $filelink=~/\?/ ? '&' : '?';
2682: $filelink .= 'inhibitmenu=yes';
2683: ($output,$response)=&ssi($filelink,%form);
2684: }
2685: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2686: $output=~s/^.*?\<body[^\>]*\>//si;
2687: $output=~s/\<\/body\s*\>.*?$//si;
2688: if (wantarray) {
2689: return ($output, $response);
2690: } else {
2691: return $output;
2692: }
2693: }
2694:
2695: # --------------------------------------------------------- Server Side Include
2696:
2697: sub absolute_url {
2698: my ($host_name) = @_;
2699: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2700: if ($host_name eq '') {
2701: $host_name = $ENV{'SERVER_NAME'};
2702: }
2703: return $protocol.$host_name;
2704: }
2705:
2706: #
2707: # Server side include.
2708: # Parameters:
2709: # fn Possibly encrypted resource name/id.
2710: # form Hash that describes how the rendering should be done
2711: # and other things.
2712: # Returns:
2713: # Scalar context: The content of the response.
2714: # Array context: 2 element list of the content and the full response object.
2715: #
2716: sub ssi {
2717:
2718: my ($fn,%form)=@_;
2719: my $ua=new LWP::UserAgent;
2720: my $request;
2721:
2722: $form{'no_update_last_known'}=1;
2723: &Apache::lonenc::check_encrypt(\$fn);
2724: if (%form) {
2725: $request=new HTTP::Request('POST',&absolute_url().$fn);
2726: $request->content(join('&',map {
2727: my $name = escape($_);
2728: "$name=" . ( ref($form{$_}) eq 'ARRAY'
2729: ? join("&$name=", map {escape($_) } @{$form{$_}})
2730: : &escape($form{$_}) );
2731: } keys(%form)));
2732: } else {
2733: $request=new HTTP::Request('GET',&absolute_url().$fn);
2734: }
2735:
2736: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2737: my $response= $ua->request($request);
2738: my $content = $response->content;
2739:
2740:
2741: if (wantarray) {
2742: return ($content, $response);
2743: } else {
2744: return $content;
2745: }
2746: }
2747:
2748: sub externalssi {
2749: my ($url)=@_;
2750: my $ua=new LWP::UserAgent;
2751: my $request=new HTTP::Request('GET',$url);
2752: my $response=$ua->request($request);
2753: if (wantarray) {
2754: return ($response->content, $response);
2755: } else {
2756: return $response->content;
2757: }
2758: }
2759:
2760: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2761:
2762: sub allowuploaded {
2763: my ($srcurl,$url)=@_;
2764: $url=&clutter(&declutter($url));
2765: my $dir=$url;
2766: $dir=~s/\/[^\/]+$//;
2767: my %httpref=();
2768: my $httpurl=&hreflocation('',$url);
2769: $httpref{'httpref.'.$httpurl}=$srcurl;
2770: &Apache::lonnet::appenv(\%httpref);
2771: }
2772:
2773: #
2774: # Determine if the current user should be able to edit a particular resource,
2775: # when viewing in course context.
2776: # (a) When viewing resource used to determine if "Edit" item is included in
2777: # Functions.
2778: # (b) When displaying folder contents in course editor, used to determine if
2779: # "Edit" link will be displayed alongside resource.
2780: #
2781: # input: six args -- filename (decluttered), course number, course domain,
2782: # url, symb (if registered) and group (if this is a group
2783: # item -- e.g., bulletin board, group page etc.).
2784: # output: array of five scalars --
2785: # $cfile -- url for file editing if editable on current server
2786: # $home -- homeserver of resource (i.e., for author if published,
2787: # or course if uploaded.).
2788: # $switchserver -- 1 if server switch will be needed.
2789: # $forceedit -- 1 if icon/link should be to go to edit mode
2790: # $forceview -- 1 if icon/link should be to go to view mode
2791: #
2792:
2793: sub can_edit_resource {
2794: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2795: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2796: #
2797: # For aboutme pages user can only edit his/her own.
2798: #
2799: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2800: my ($sdom,$sname) = ($1,$2);
2801: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2802: $home = $env{'user.home'};
2803: $cfile = $resurl;
2804: if ($env{'form.forceedit'}) {
2805: $forceview = 1;
2806: } else {
2807: $forceedit = 1;
2808: }
2809: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2810: } else {
2811: return;
2812: }
2813: }
2814:
2815: if ($env{'request.course.id'}) {
2816: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2817: if ($group ne '') {
2818: # if this is a group homepage or group bulletin board, check group privs
2819: my $allowed = 0;
2820: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2821: if ((&allowed('mdg',$env{'request.course.id'}.
2822: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2823: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2824: $allowed = 1;
2825: }
2826: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2827: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2828: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2829: $allowed = 1;
2830: }
2831: }
2832: if ($allowed) {
2833: $home=&homeserver($cnum,$cdom);
2834: if ($env{'form.forceedit'}) {
2835: $forceview = 1;
2836: } else {
2837: $forceedit = 1;
2838: }
2839: $cfile = $resurl;
2840: } else {
2841: return;
2842: }
2843: } else {
2844: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2845: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2846: return;
2847: }
2848: } elsif (!$crsedit) {
2849: #
2850: # No edit allowed where CC has switched to student role.
2851: #
2852: return;
2853: }
2854: }
2855: }
2856:
2857: if ($file ne '') {
2858: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2859: if (&is_course_upload($file,$cnum,$cdom)) {
2860: $uploaded = 1;
2861: $incourse = 1;
2862: if ($file =~/\.(htm|html|css|js|txt)$/) {
2863: $cfile = &hreflocation('',$file);
2864: if ($env{'form.forceedit'}) {
2865: $forceview = 1;
2866: } else {
2867: $forceedit = 1;
2868: }
2869: }
2870: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2871: $incourse = 1;
2872: if ($env{'form.forceedit'}) {
2873: $forceview = 1;
2874: } else {
2875: $forceedit = 1;
2876: }
2877: $cfile = $resurl;
2878: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2879: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2880: $incourse = 1;
2881: if ($env{'form.forceedit'}) {
2882: $forceview = 1;
2883: } else {
2884: $forceedit = 1;
2885: }
2886: $cfile = $resurl;
2887: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2888: $incourse = 1;
2889: $cfile = $resurl.'/smpedit';
2890: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2891: $incourse = 1;
2892: if ($env{'form.forceedit'}) {
2893: $forceview = 1;
2894: } else {
2895: $forceedit = 1;
2896: }
2897: $cfile = $resurl;
2898: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2899: $incourse = 1;
2900: if ($env{'form.forceedit'}) {
2901: $forceview = 1;
2902: } else {
2903: $forceedit = 1;
2904: }
2905: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2906: }
2907: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2908: my $template = '/res/lib/templates/simpleproblem.problem';
2909: if (&is_on_map($template)) {
2910: $incourse = 1;
2911: $forceview = 1;
2912: $cfile = $template;
2913: }
2914: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2915: $incourse = 1;
2916: if ($env{'form.forceedit'}) {
2917: $forceview = 1;
2918: } else {
2919: $forceedit = 1;
2920: }
2921: $cfile = $resurl;
2922: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2923: $incourse = 1;
2924: $forceview = 1;
2925: if ($symb) {
2926: my ($map,$id,$res)=&decode_symb($symb);
2927: $env{'request.symb'} = $symb;
2928: $cfile = &clutter($res);
2929: } else {
2930: $cfile = $env{'form.suppurl'};
2931: $cfile =~ s{^http://}{};
2932: $cfile = '/adm/wrapper/ext/'.$cfile;
2933: }
2934: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2935: if ($env{'form.forceedit'}) {
2936: $forceview = 1;
2937: } else {
2938: $forceedit = 1;
2939: }
2940: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2941: }
2942: }
2943: if ($uploaded || $incourse) {
2944: $home=&homeserver($cnum,$cdom);
2945: } elsif ($file !~ m{/$}) {
2946: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2947: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2948: # Check that the user has permission to edit this resource
2949: my $setpriv = 1;
2950: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2951: if (defined($cfudom)) {
2952: $home=&homeserver($cfuname,$cfudom);
2953: $cfile=$file;
2954: }
2955: }
2956: if (($cfile ne '') && (!$incourse || $uploaded) &&
2957: (($home ne '') && ($home ne 'no_host'))) {
2958: my @ids=¤t_machine_ids();
2959: unless (grep(/^\Q$home\E$/,@ids)) {
2960: $switchserver=1;
2961: }
2962: }
2963: }
2964: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2965: }
2966:
2967: sub is_course_upload {
2968: my ($file,$cnum,$cdom) = @_;
2969: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2970: $uploadpath =~ s{^\/}{};
2971: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
2972: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
2973: return 1;
2974: }
2975: return;
2976: }
2977:
2978: sub in_course {
2979: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2980: if ($hideprivileged) {
2981: my $skipuser;
2982: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2983: my @possdoms = ($cdom);
2984: if ($coursehash{'checkforpriv'}) {
2985: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
2986: }
2987: if (&privileged($uname,$udom,\@possdoms)) {
2988: $skipuser = 1;
2989: if ($coursehash{'nothideprivileged'}) {
2990: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2991: my $user;
2992: if ($item =~ /:/) {
2993: $user = $item;
2994: } else {
2995: $user = join(':',split(/[\@]/,$item));
2996: }
2997: if ($user eq $uname.':'.$udom) {
2998: undef($skipuser);
2999: last;
3000: }
3001: }
3002: }
3003: if ($skipuser) {
3004: return 0;
3005: }
3006: }
3007: }
3008: $type ||= 'any';
3009: if (!defined($cdom) || !defined($cnum)) {
3010: my $cid = $env{'request.course.id'};
3011: $cdom = $env{'course.'.$cid.'.domain'};
3012: $cnum = $env{'course.'.$cid.'.num'};
3013: }
3014: my $typesref;
3015: if (($type eq 'any') || ($type eq 'all')) {
3016: $typesref = ['active','previous','future'];
3017: } elsif ($type eq 'previous' || $type eq 'future') {
3018: $typesref = [$type];
3019: }
3020: my %roles = &get_my_roles($uname,$udom,'userroles',
3021: $typesref,undef,[$cdom]);
3022: my ($tmp) = keys(%roles);
3023: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3024: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3025: if (@course_roles > 0) {
3026: return 1;
3027: }
3028: return 0;
3029: }
3030:
3031: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3032: # input: action, courseID, current domain, intended
3033: # path to file, source of file, instruction to parse file for objects,
3034: # ref to hash for embedded objects,
3035: # ref to hash for codebase of java objects.
3036: # reference to scalar to accommodate mime type determined
3037: # from File::MMagic if $parser = parse.
3038: #
3039: # output: url to file (if action was uploaddoc),
3040: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3041: #
3042: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3043: # course.
3044: #
3045: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3046: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3047: # course's home server.
3048: #
3049: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3050: # be copied from $source (current location) to
3051: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3052: # and will then be copied to
3053: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3054: # course's home server.
3055: #
3056: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3057: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3058: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3059: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3060: # in course's home server.
3061: #
3062:
3063: sub process_coursefile {
3064: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3065: $mimetype)=@_;
3066: my $fetchresult;
3067: my $home=&homeserver($docuname,$docudom);
3068: if ($action eq 'propagate') {
3069: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3070: $home);
3071: } else {
3072: my $fpath = '';
3073: my $fname = $file;
3074: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3075: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3076: my $filepath = &build_filepath($fpath);
3077: if ($action eq 'copy') {
3078: if ($source eq '') {
3079: $fetchresult = 'no source file';
3080: return $fetchresult;
3081: } else {
3082: my $destination = $filepath.'/'.$fname;
3083: rename($source,$destination);
3084: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3085: $home);
3086: }
3087: } elsif ($action eq 'uploaddoc') {
3088: open(my $fh,'>'.$filepath.'/'.$fname);
3089: print $fh $env{'form.'.$source};
3090: close($fh);
3091: if ($parser eq 'parse') {
3092: my $mm = new File::MMagic;
3093: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3094: if ($type eq 'text/html') {
3095: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3096: unless ($parse_result eq 'ok') {
3097: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3098: }
3099: }
3100: if (ref($mimetype)) {
3101: $$mimetype = $type;
3102: }
3103: }
3104: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3105: $home);
3106: if ($fetchresult eq 'ok') {
3107: return '/uploaded/'.$fpath.'/'.$fname;
3108: } else {
3109: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3110: ' to host '.$home.': '.$fetchresult);
3111: return '/adm/notfound.html';
3112: }
3113: }
3114: }
3115: unless ( $fetchresult eq 'ok') {
3116: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3117: ' to host '.$home.': '.$fetchresult);
3118: }
3119: return $fetchresult;
3120: }
3121:
3122: sub build_filepath {
3123: my ($fpath) = @_;
3124: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3125: unless ($fpath eq '') {
3126: my @parts=split('/',$fpath);
3127: foreach my $part (@parts) {
3128: $filepath.= '/'.$part;
3129: if ((-e $filepath)!=1) {
3130: mkdir($filepath,0777);
3131: }
3132: }
3133: }
3134: return $filepath;
3135: }
3136:
3137: sub store_edited_file {
3138: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3139: my $file = $primary_url;
3140: $file =~ s#^/uploaded/$docudom/$docuname/##;
3141: my $fpath = '';
3142: my $fname = $file;
3143: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3144: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3145: my $filepath = &build_filepath($fpath);
3146: open(my $fh,'>'.$filepath.'/'.$fname);
3147: print $fh $content;
3148: close($fh);
3149: my $home=&homeserver($docuname,$docudom);
3150: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3151: $home);
3152: if ($$fetchresult eq 'ok') {
3153: return '/uploaded/'.$fpath.'/'.$fname;
3154: } else {
3155: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3156: ' to host '.$home.': '.$$fetchresult);
3157: return '/adm/notfound.html';
3158: }
3159: }
3160:
3161: sub clean_filename {
3162: my ($fname,$args)=@_;
3163: # Replace Windows backslashes by forward slashes
3164: $fname=~s/\\/\//g;
3165: if (!$args->{'keep_path'}) {
3166: # Get rid of everything but the actual filename
3167: $fname=~s/^.*\/([^\/]+)$/$1/;
3168: }
3169: # Replace spaces by underscores
3170: $fname=~s/\s+/\_/g;
3171: # Replace all other weird characters by nothing
3172: $fname=~s{[^/\w\.\-]}{}g;
3173: # Replace all .\d. sequences with _\d. so they no longer look like version
3174: # numbers
3175: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3176: return $fname;
3177: }
3178: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3179: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3180: # image with the same aspect ratio as the original, but with dimensions which do
3181: # not exceed $resizewidth and $resizeheight.
3182:
3183: sub resizeImage {
3184: my ($img_path,$resizewidth,$resizeheight) = @_;
3185: my $ima = Image::Magick->new;
3186: my $resized;
3187: if (-e $img_path) {
3188: $ima->Read($img_path);
3189: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3190: my $width = $ima->Get('width');
3191: my $height = $ima->Get('height');
3192: if ($width > $resizewidth) {
3193: my $factor = $width/$resizewidth;
3194: my $newheight = $height/$factor;
3195: $ima->Scale(width=>$resizewidth,height=>$newheight);
3196: $resized = 1;
3197: }
3198: }
3199: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3200: my $width = $ima->Get('width');
3201: my $height = $ima->Get('height');
3202: if ($height > $resizeheight) {
3203: my $factor = $height/$resizeheight;
3204: my $newwidth = $width/$factor;
3205: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3206: $resized = 1;
3207: }
3208: }
3209: if ($resized) {
3210: $ima->Write($img_path);
3211: }
3212: }
3213: return;
3214: }
3215:
3216: # --------------- Take an uploaded file and put it into the userfiles directory
3217: # input: $formname - the contents of the file are in $env{"form.$formname"}
3218: # the desired filename is in $env{"form.$formname.filename"}
3219: # $context - possible values: coursedoc, existingfile, overwrite,
3220: # canceloverwrite, or ''.
3221: # if 'coursedoc': upload to the current course
3222: # if 'existingfile': write file to tmp/overwrites directory
3223: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3224: # $context is passed as argument to &finishuserfileupload
3225: # $subdir - directory in userfile to store the file into
3226: # $parser - instruction to parse file for objects ($parser = parse)
3227: # $allfiles - reference to hash for embedded objects
3228: # $codebase - reference to hash for codebase of java objects
3229: # $desuname - username for permanent storage of uploaded file
3230: # $dsetudom - domain for permanaent storage of uploaded file
3231: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3232: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3233: # $resizewidth - width (pixels) to which to resize uploaded image
3234: # $resizeheight - height (pixels) to which to resize uploaded image
3235: # $mimetype - reference to scalar to accommodate mime type determined
3236: # from File::MMagic.
3237: #
3238: # output: url of file in userspace, or error: <message>
3239: # or /adm/notfound.html if failure to upload occurse
3240:
3241: sub userfileupload {
3242: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3243: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3244: if (!defined($subdir)) { $subdir='unknown'; }
3245: my $fname=$env{'form.'.$formname.'.filename'};
3246: $fname=&clean_filename($fname);
3247: # See if there is anything left
3248: unless ($fname) { return 'error: no uploaded file'; }
3249: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3250: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3251: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3252: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3253: my $now = time;
3254: my $filepath;
3255: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3256: $filepath = 'tmp/helprequests/'.$now;
3257: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3258: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3259: '_'.$env{'user.domain'}.'/pending';
3260: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3261: my ($docuname,$docudom);
3262: if ($destudom) {
3263: $docudom = $destudom;
3264: } else {
3265: $docudom = $env{'user.domain'};
3266: }
3267: if ($destuname) {
3268: $docuname = $destuname;
3269: } else {
3270: $docuname = $env{'user.name'};
3271: }
3272: if (exists($env{'form.group'})) {
3273: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3274: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3275: }
3276: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3277: if ($context eq 'canceloverwrite') {
3278: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3279: if (-e $tempfile) {
3280: my @info = stat($tempfile);
3281: if ($info[9] eq $env{'form.timestamp'}) {
3282: unlink($tempfile);
3283: }
3284: }
3285: return;
3286: }
3287: }
3288: # Create the directory if not present
3289: my @parts=split(/\//,$filepath);
3290: my $fullpath = $perlvar{'lonDaemons'};
3291: for (my $i=0;$i<@parts;$i++) {
3292: $fullpath .= '/'.$parts[$i];
3293: if ((-e $fullpath)!=1) {
3294: mkdir($fullpath,0777);
3295: }
3296: }
3297: open(my $fh,'>'.$fullpath.'/'.$fname);
3298: print $fh $env{'form.'.$formname};
3299: close($fh);
3300: if ($context eq 'existingfile') {
3301: my @info = stat($fullpath.'/'.$fname);
3302: return ($fullpath.'/'.$fname,$info[9]);
3303: } else {
3304: return $fullpath.'/'.$fname;
3305: }
3306: }
3307: if ($subdir eq 'scantron') {
3308: $fname = 'scantron_orig_'.$fname;
3309: } else {
3310: $fname="$subdir/$fname";
3311: }
3312: if ($context eq 'coursedoc') {
3313: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3314: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3315: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3316: return &finishuserfileupload($docuname,$docudom,
3317: $formname,$fname,$parser,$allfiles,
3318: $codebase,$thumbwidth,$thumbheight,
3319: $resizewidth,$resizeheight,$context,$mimetype);
3320: } else {
3321: if ($env{'form.folder'}) {
3322: $fname=$env{'form.folder'}.'/'.$fname;
3323: }
3324: return &process_coursefile('uploaddoc',$docuname,$docudom,
3325: $fname,$formname,$parser,
3326: $allfiles,$codebase,$mimetype);
3327: }
3328: } elsif (defined($destuname)) {
3329: my $docuname=$destuname;
3330: my $docudom=$destudom;
3331: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3332: $parser,$allfiles,$codebase,
3333: $thumbwidth,$thumbheight,
3334: $resizewidth,$resizeheight,$context,$mimetype);
3335: } else {
3336: my $docuname=$env{'user.name'};
3337: my $docudom=$env{'user.domain'};
3338: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3339: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3340: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3341: }
3342: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3343: $parser,$allfiles,$codebase,
3344: $thumbwidth,$thumbheight,
3345: $resizewidth,$resizeheight,$context,$mimetype);
3346: }
3347: }
3348:
3349: sub finishuserfileupload {
3350: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3351: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3352: my $path=$docudom.'/'.$docuname.'/';
3353: my $filepath=$perlvar{'lonDocRoot'};
3354:
3355: my ($fnamepath,$file,$fetchthumb);
3356: $file=$fname;
3357: if ($fname=~m|/|) {
3358: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3359: $path.=$fnamepath.'/';
3360: }
3361: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3362: my $count;
3363: for ($count=4;$count<=$#parts;$count++) {
3364: $filepath.="/$parts[$count]";
3365: if ((-e $filepath)!=1) {
3366: mkdir($filepath,0777);
3367: }
3368: }
3369:
3370: # Save the file
3371: {
3372: if (!open(FH,'>'.$filepath.'/'.$file)) {
3373: &logthis('Failed to create '.$filepath.'/'.$file);
3374: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3375: return '/adm/notfound.html';
3376: }
3377: if ($context eq 'overwrite') {
3378: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3379: my $target = $filepath.'/'.$file;
3380: if (-e $source) {
3381: my @info = stat($source);
3382: if ($info[9] eq $env{'form.timestamp'}) {
3383: unless (&File::Copy::move($source,$target)) {
3384: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3385: return "Moving from $source failed";
3386: }
3387: } else {
3388: return "Temporary file: $source had unexpected date/time for last modification";
3389: }
3390: } else {
3391: return "Temporary file: $source missing";
3392: }
3393: } elsif (!print FH ($env{'form.'.$formname})) {
3394: &logthis('Failed to write to '.$filepath.'/'.$file);
3395: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3396: return '/adm/notfound.html';
3397: }
3398: close(FH);
3399: if ($resizewidth && $resizeheight) {
3400: my $mm = new File::MMagic;
3401: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3402: if ($mime_type =~ m{^image/}) {
3403: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3404: }
3405: }
3406: }
3407: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3408: if (ref($mimetype)) {
3409: if ($$mimetype eq '') {
3410: my $mm = new File::MMagic;
3411: my $type = $mm->checktype_filename($filepath.'/'.$file);
3412: $$mimetype = $type;
3413: }
3414: }
3415: }
3416: if ($parser eq 'parse') {
3417: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3418: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3419: $allfiles,$codebase);
3420: unless ($parse_result eq 'ok') {
3421: &logthis('Failed to parse '.$filepath.$file.
3422: ' for embedded media: '.$parse_result);
3423: }
3424: }
3425: }
3426: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3427: my $input = $filepath.'/'.$file;
3428: my $output = $filepath.'/'.'tn-'.$file;
3429: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3430: system("convert -sample $thumbsize $input $output");
3431: if (-e $filepath.'/'.'tn-'.$file) {
3432: $fetchthumb = 1;
3433: }
3434: }
3435:
3436: # Notify homeserver to grep it
3437: #
3438: my $docuhome=&homeserver($docuname,$docudom);
3439: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3440: if ($fetchresult eq 'ok') {
3441: if ($fetchthumb) {
3442: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3443: if ($thumbresult ne 'ok') {
3444: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3445: $docuhome.': '.$thumbresult);
3446: }
3447: }
3448: #
3449: # Return the URL to it
3450: return '/uploaded/'.$path.$file;
3451: } else {
3452: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3453: ': '.$fetchresult);
3454: return '/adm/notfound.html';
3455: }
3456: }
3457:
3458: sub extract_embedded_items {
3459: my ($fullpath,$allfiles,$codebase,$content) = @_;
3460: my @state = ();
3461: my (%lastids,%related,%shockwave,%flashvars);
3462: my %javafiles = (
3463: codebase => '',
3464: code => '',
3465: archive => ''
3466: );
3467: my %mediafiles = (
3468: src => '',
3469: movie => '',
3470: );
3471: my $p;
3472: if ($content) {
3473: $p = HTML::LCParser->new($content);
3474: } else {
3475: $p = HTML::LCParser->new($fullpath);
3476: }
3477: while (my $t=$p->get_token()) {
3478: if ($t->[0] eq 'S') {
3479: my ($tagname, $attr) = ($t->[1],$t->[2]);
3480: push(@state, $tagname);
3481: if (lc($tagname) eq 'allow') {
3482: &add_filetype($allfiles,$attr->{'src'},'src');
3483: }
3484: if (lc($tagname) eq 'img') {
3485: &add_filetype($allfiles,$attr->{'src'},'src');
3486: }
3487: if (lc($tagname) eq 'a') {
3488: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3489: &add_filetype($allfiles,$attr->{'href'},'href');
3490: }
3491: }
3492: if (lc($tagname) eq 'script') {
3493: my $src;
3494: if ($attr->{'archive'} =~ /\.jar$/i) {
3495: &add_filetype($allfiles,$attr->{'archive'},'archive');
3496: } else {
3497: if ($attr->{'src'} ne '') {
3498: $src = $attr->{'src'};
3499: &add_filetype($allfiles,$src,'src');
3500: }
3501: }
3502: my $text = $p->get_trimmed_text();
3503: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3504: my @swfargs = split(/,/,$1);
3505: foreach my $item (@swfargs) {
3506: $item =~ s/["']//g;
3507: $item =~ s/^\s+//;
3508: $item =~ s/\s+$//;
3509: }
3510: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3511: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3512: push(@{$related{$swfargs[0]}},$swfargs[2]);
3513: } else {
3514: $related{$swfargs[0]} = [$swfargs[2]];
3515: }
3516: }
3517: }
3518: }
3519: if (lc($tagname) eq 'link') {
3520: if (lc($attr->{'rel'}) eq 'stylesheet') {
3521: &add_filetype($allfiles,$attr->{'href'},'href');
3522: }
3523: }
3524: if (lc($tagname) eq 'object' ||
3525: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3526: foreach my $item (keys(%javafiles)) {
3527: $javafiles{$item} = '';
3528: }
3529: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3530: $lastids{lc($tagname)} = $attr->{'id'};
3531: }
3532: }
3533: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3534: my $name = lc($attr->{'name'});
3535: foreach my $item (keys(%javafiles)) {
3536: if ($name eq $item) {
3537: $javafiles{$item} = $attr->{'value'};
3538: last;
3539: }
3540: }
3541: my $pathfrom;
3542: foreach my $item (keys(%mediafiles)) {
3543: if ($name eq $item) {
3544: $pathfrom = $attr->{'value'};
3545: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3546: &add_filetype($allfiles,$pathfrom,$name);
3547: last;
3548: }
3549: }
3550: if ($name eq 'flashvars') {
3551: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3552: }
3553: if ($pathfrom ne '') {
3554: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3555: $pathfrom);
3556: }
3557: }
3558: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3559: foreach my $item (keys(%javafiles)) {
3560: if ($attr->{$item}) {
3561: $javafiles{$item} = $attr->{$item};
3562: last;
3563: }
3564: }
3565: foreach my $item (keys(%mediafiles)) {
3566: if ($attr->{$item}) {
3567: &add_filetype($allfiles,$attr->{$item},$item);
3568: last;
3569: }
3570: }
3571: if (lc($tagname) eq 'embed') {
3572: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3573: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3574: $attr->{'src'});
3575: }
3576: }
3577: }
3578: if (lc($tagname) eq 'iframe') {
3579: my $src = $attr->{'src'} ;
3580: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
3581: &add_filetype($allfiles,$src,'src');
3582: } elsif ($src =~ m{^/}) {
3583: if ($env{'request.course.id'}) {
3584: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3585: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3586: my $url = &hreflocation('',$fullpath);
3587: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
3588: my $relpath = $1;
3589: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
3590: &add_filetype($allfiles,$1,'src');
3591: }
3592: }
3593: }
3594: }
3595: }
3596: if ($t->[4] =~ m{/>$}) {
3597: pop(@state);
3598: }
3599: } elsif ($t->[0] eq 'E') {
3600: my ($tagname) = ($t->[1]);
3601: if ($javafiles{'codebase'} ne '') {
3602: $javafiles{'codebase'} .= '/';
3603: }
3604: if (lc($tagname) eq 'applet' ||
3605: lc($tagname) eq 'object' ||
3606: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3607: ) {
3608: foreach my $item (keys(%javafiles)) {
3609: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3610: my $file=$javafiles{'codebase'}.$javafiles{$item};
3611: &add_filetype($allfiles,$file,$item);
3612: }
3613: }
3614: }
3615: pop @state;
3616: }
3617: }
3618: foreach my $id (sort(keys(%flashvars))) {
3619: if ($shockwave{$id} ne '') {
3620: my @pairs = split(/\&/,$flashvars{$id});
3621: foreach my $pair (@pairs) {
3622: my ($key,$value) = split(/\=/,$pair);
3623: if ($key eq 'thumb') {
3624: &add_filetype($allfiles,$value,$key);
3625: } elsif ($key eq 'content') {
3626: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3627: my ($ext) = ($value =~ /\.([^.]+)$/);
3628: if ($ext ne '') {
3629: &add_filetype($allfiles,$path.$value,$ext);
3630: }
3631: }
3632: }
3633: }
3634: }
3635: return 'ok';
3636: }
3637:
3638: sub add_filetype {
3639: my ($allfiles,$file,$type)=@_;
3640: if (exists($allfiles->{$file})) {
3641: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3642: push(@{$allfiles->{$file}}, &escape($type));
3643: }
3644: } else {
3645: @{$allfiles->{$file}} = (&escape($type));
3646: }
3647: }
3648:
3649: sub embedded_dependency {
3650: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3651: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3652: if (($identifier ne '') &&
3653: (ref($related->{$identifier}) eq 'ARRAY') &&
3654: ($pathfrom ne '')) {
3655: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3656: foreach my $dep (@{$related->{$identifier}}) {
3657: &add_filetype($allfiles,$path.$dep,'object');
3658: }
3659: }
3660: }
3661: return;
3662: }
3663:
3664: sub removeuploadedurl {
3665: my ($url)=@_;
3666: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3667: return &removeuserfile($uname,$udom,$fname);
3668: }
3669:
3670: sub removeuserfile {
3671: my ($docuname,$docudom,$fname)=@_;
3672: my $home=&homeserver($docuname,$docudom);
3673: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3674: if ($result eq 'ok') {
3675: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3676: my $metafile = $fname.'.meta';
3677: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3678: my $url = "/uploaded/$docudom/$docuname/$fname";
3679: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3680: my $sqlresult =
3681: &update_portfolio_table($docuname,$docudom,$file,
3682: 'portfolio_metadata',$group,
3683: 'delete');
3684: }
3685: }
3686: return $result;
3687: }
3688:
3689: sub mkdiruserfile {
3690: my ($docuname,$docudom,$dir)=@_;
3691: my $home=&homeserver($docuname,$docudom);
3692: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3693: }
3694:
3695: sub renameuserfile {
3696: my ($docuname,$docudom,$old,$new)=@_;
3697: my $home=&homeserver($docuname,$docudom);
3698: my $result = &reply("renameuserfile:$docudom:$docuname:".
3699: &escape("$old").':'.&escape("$new"),$home);
3700: if ($result eq 'ok') {
3701: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3702: my $oldmeta = $old.'.meta';
3703: my $newmeta = $new.'.meta';
3704: my $metaresult =
3705: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3706: my $url = "/uploaded/$docudom/$docuname/$old";
3707: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3708: my $sqlresult =
3709: &update_portfolio_table($docuname,$docudom,$file,
3710: 'portfolio_metadata',$group,
3711: 'delete');
3712: }
3713: }
3714: return $result;
3715: }
3716:
3717: # ------------------------------------------------------------------------- Log
3718:
3719: sub log {
3720: my ($dom,$nam,$hom,$what)=@_;
3721: return critical("log:$dom:$nam:$what",$hom);
3722: }
3723:
3724: # ------------------------------------------------------------------ Course Log
3725: #
3726: # This routine flushes several buffers of non-mission-critical nature
3727: #
3728:
3729: sub flushcourselogs {
3730: &logthis('Flushing log buffers');
3731: #
3732: # course logs
3733: # This is a log of all transactions in a course, which can be used
3734: # for data mining purposes
3735: #
3736: # It also collects the courseid database, which lists last transaction
3737: # times and course titles for all courseids
3738: #
3739: my %courseidbuffer=();
3740: foreach my $crsid (keys(%courselogs)) {
3741: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3742: &escape($courselogs{$crsid}),
3743: $coursehombuf{$crsid}) eq 'ok') {
3744: delete $courselogs{$crsid};
3745: } else {
3746: &logthis('Failed to flush log buffer for '.$crsid);
3747: if (length($courselogs{$crsid})>40000) {
3748: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3749: " exceeded maximum size, deleting.</font>");
3750: delete $courselogs{$crsid};
3751: }
3752: }
3753: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3754: 'description' => $coursedescrbuf{$crsid},
3755: 'inst_code' => $courseinstcodebuf{$crsid},
3756: 'type' => $coursetypebuf{$crsid},
3757: 'owner' => $courseownerbuf{$crsid},
3758: };
3759: }
3760: #
3761: # Write course id database (reverse lookup) to homeserver of courses
3762: # Is used in pickcourse
3763: #
3764: foreach my $crs_home (keys(%courseidbuffer)) {
3765: my $response = &courseidput(&host_domain($crs_home),
3766: $courseidbuffer{$crs_home},
3767: $crs_home,'timeonly');
3768: }
3769: #
3770: # File accesses
3771: # Writes to the dynamic metadata of resources to get hit counts, etc.
3772: #
3773: foreach my $entry (keys(%accesshash)) {
3774: if ($entry =~ /___count$/) {
3775: my ($dom,$name);
3776: ($dom,$name,undef)=
3777: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3778: if (! defined($dom) || $dom eq '' ||
3779: ! defined($name) || $name eq '') {
3780: my $cid = $env{'request.course.id'};
3781: $dom = $env{'request.'.$cid.'.domain'};
3782: $name = $env{'request.'.$cid.'.num'};
3783: }
3784: my $value = $accesshash{$entry};
3785: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3786: my %temphash=($url => $value);
3787: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3788: if ($result eq 'ok') {
3789: delete $accesshash{$entry};
3790: }
3791: } else {
3792: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3793: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3794: my %temphash=($entry => $accesshash{$entry});
3795: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3796: delete $accesshash{$entry};
3797: }
3798: }
3799: }
3800: #
3801: # Roles
3802: # Reverse lookup of user roles for course faculty/staff and co-authorship
3803: #
3804: foreach my $entry (keys(%userrolehash)) {
3805: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3806: split(/\:/,$entry);
3807: if (&Apache::lonnet::put('nohist_userroles',
3808: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3809: $rudom,$runame) eq 'ok') {
3810: delete $userrolehash{$entry};
3811: }
3812: }
3813: #
3814: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3815: #
3816: my %domrolebuffer = ();
3817: foreach my $entry (keys(%domainrolehash)) {
3818: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3819: if ($domrolebuffer{$rudom}) {
3820: $domrolebuffer{$rudom}.='&'.&escape($entry).
3821: '='.&escape($domainrolehash{$entry});
3822: } else {
3823: $domrolebuffer{$rudom}.=&escape($entry).
3824: '='.&escape($domainrolehash{$entry});
3825: }
3826: delete $domainrolehash{$entry};
3827: }
3828: foreach my $dom (keys(%domrolebuffer)) {
3829: my %servers = &get_servers($dom,'library');
3830: foreach my $tryserver (keys(%servers)) {
3831: unless (&reply('domroleput:'.$dom.':'.
3832: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3833: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3834: }
3835: }
3836: }
3837: $dumpcount++;
3838: }
3839:
3840: sub courselog {
3841: my $what=shift;
3842: $what=time.':'.$what;
3843: unless ($env{'request.course.id'}) { return ''; }
3844: $coursedombuf{$env{'request.course.id'}}=
3845: $env{'course.'.$env{'request.course.id'}.'.domain'};
3846: $coursenumbuf{$env{'request.course.id'}}=
3847: $env{'course.'.$env{'request.course.id'}.'.num'};
3848: $coursehombuf{$env{'request.course.id'}}=
3849: $env{'course.'.$env{'request.course.id'}.'.home'};
3850: $coursedescrbuf{$env{'request.course.id'}}=
3851: $env{'course.'.$env{'request.course.id'}.'.description'};
3852: $courseinstcodebuf{$env{'request.course.id'}}=
3853: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3854: $courseownerbuf{$env{'request.course.id'}}=
3855: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3856: $coursetypebuf{$env{'request.course.id'}}=
3857: $env{'course.'.$env{'request.course.id'}.'.type'};
3858: if (defined $courselogs{$env{'request.course.id'}}) {
3859: $courselogs{$env{'request.course.id'}}.='&'.$what;
3860: } else {
3861: $courselogs{$env{'request.course.id'}}.=$what;
3862: }
3863: if (length($courselogs{$env{'request.course.id'}})>4048) {
3864: &flushcourselogs();
3865: }
3866: }
3867:
3868: sub courseacclog {
3869: my $fnsymb=shift;
3870: unless ($env{'request.course.id'}) { return ''; }
3871: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3872: if ($fnsymb=~/$LONCAPA::assess_re/) {
3873: $what.=':POST';
3874: # FIXME: Probably ought to escape things....
3875: foreach my $key (keys(%env)) {
3876: if ($key=~/^form\.(.*)/) {
3877: my $formitem = $1;
3878: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3879: $what.=':'.$formitem.'='.$env{$key};
3880: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3881: $what.=':'.$formitem.'='.$env{$key};
3882: }
3883: }
3884: }
3885: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3886: # FIXME: We should not be depending on a form parameter that someone
3887: # editing lonsearchcat.pm might change in the future.
3888: if ($env{'form.phase'} eq 'course_search') {
3889: $what.= ':POST';
3890: # FIXME: Probably ought to escape things....
3891: foreach my $element ('courseexp','crsfulltext','crsrelated',
3892: 'crsdiscuss') {
3893: $what.=':'.$element.'='.$env{'form.'.$element};
3894: }
3895: }
3896: }
3897: &courselog($what);
3898: }
3899:
3900: sub countacc {
3901: my $url=&declutter(shift);
3902: return if (! defined($url) || $url eq '');
3903: unless ($env{'request.course.id'}) { return ''; }
3904: #
3905: # Mark that this url was used in this course
3906: #
3907: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3908: #
3909: # Increase the access count for this resource in this child process
3910: #
3911: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3912: $accesshash{$key}++;
3913: }
3914:
3915: sub linklog {
3916: my ($from,$to)=@_;
3917: $from=&declutter($from);
3918: $to=&declutter($to);
3919: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3920: $accesshash{$to.'___'.$from.'___goto'}=1;
3921: }
3922:
3923: sub statslog {
3924: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3925: if ($users<2) { return; }
3926: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3927: 'course' => $env{'request.course.id'},
3928: 'sections' => '"all"',
3929: 'num_students' => $users,
3930: 'part' => $part,
3931: 'symb' => $symb,
3932: 'mean_tries' => $av_attempts,
3933: 'deg_of_diff' => $degdiff});
3934: foreach my $key (keys(%dynstore)) {
3935: $accesshash{$key}=$dynstore{$key};
3936: }
3937: }
3938:
3939: sub userrolelog {
3940: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3941: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3942: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3943: $userrolehash
3944: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3945: =$tend.':'.$tstart;
3946: }
3947: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3948: $userrolehash
3949: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3950: =$tend.':'.$tstart;
3951: }
3952: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3953: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3954: $domainrolehash
3955: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3956: = $tend.':'.$tstart;
3957: }
3958: }
3959:
3960: sub courserolelog {
3961: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3962: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3963: my $cdom = $1;
3964: my $cnum = $2;
3965: my $sec = $3;
3966: my $namespace = 'rolelog';
3967: my %storehash = (
3968: role => $trole,
3969: start => $tstart,
3970: end => $tend,
3971: selfenroll => $selfenroll,
3972: context => $context,
3973: );
3974: if ($trole eq 'gr') {
3975: $namespace = 'groupslog';
3976: $storehash{'group'} = $sec;
3977: } else {
3978: $storehash{'section'} = $sec;
3979: }
3980: &write_log('course',$namespace,\%storehash,$delflag,$username,
3981: $domain,$cnum,$cdom);
3982: if (($trole ne 'st') || ($sec ne '')) {
3983: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3984: }
3985: }
3986: return;
3987: }
3988:
3989: sub domainrolelog {
3990: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3991: if ($area =~ m{^/($match_domain)/$}) {
3992: my $cdom = $1;
3993: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3994: my $namespace = 'rolelog';
3995: my %storehash = (
3996: role => $trole,
3997: start => $tstart,
3998: end => $tend,
3999: context => $context,
4000: );
4001: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4002: $domain,$domconfiguser,$cdom);
4003: }
4004: return;
4005:
4006: }
4007:
4008: sub coauthorrolelog {
4009: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4010: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4011: my $audom = $1;
4012: my $auname = $2;
4013: my $namespace = 'rolelog';
4014: my %storehash = (
4015: role => $trole,
4016: start => $tstart,
4017: end => $tend,
4018: context => $context,
4019: );
4020: &write_log('author',$namespace,\%storehash,$delflag,$username,
4021: $domain,$auname,$audom);
4022: }
4023: return;
4024: }
4025:
4026: sub get_course_adv_roles {
4027: my ($cid,$codes) = @_;
4028: $cid=$env{'request.course.id'} unless (defined($cid));
4029: my %coursehash=&coursedescription($cid);
4030: my $crstype = &Apache::loncommon::course_type($cid);
4031: my %nothide=();
4032: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4033: if ($user !~ /:/) {
4034: $nothide{join(':',split(/[\@]/,$user))}=1;
4035: } else {
4036: $nothide{$user}=1;
4037: }
4038: }
4039: my @possdoms = ($coursehash{'domain'});
4040: if ($coursehash{'checkforpriv'}) {
4041: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4042: }
4043: my %returnhash=();
4044: my %dumphash=
4045: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4046: my $now=time;
4047: my %privileged;
4048: foreach my $entry (keys(%dumphash)) {
4049: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4050: if (($tstart) && ($tstart<0)) { next; }
4051: if (($tend) && ($tend<$now)) { next; }
4052: if (($tstart) && ($now<$tstart)) { next; }
4053: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4054: if ($username eq '' || $domain eq '') { next; }
4055: if ((&privileged($username,$domain,\@possdoms)) &&
4056: (!$nothide{$username.':'.$domain})) { next; }
4057: if ($role eq 'cr') { next; }
4058: if ($codes) {
4059: if ($section) { $role .= ':'.$section; }
4060: if ($returnhash{$role}) {
4061: $returnhash{$role}.=','.$username.':'.$domain;
4062: } else {
4063: $returnhash{$role}=$username.':'.$domain;
4064: }
4065: } else {
4066: my $key=&plaintext($role,$crstype);
4067: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4068: if ($returnhash{$key}) {
4069: $returnhash{$key}.=','.$username.':'.$domain;
4070: } else {
4071: $returnhash{$key}=$username.':'.$domain;
4072: }
4073: }
4074: }
4075: return %returnhash;
4076: }
4077:
4078: sub get_my_roles {
4079: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4080: unless (defined($uname)) { $uname=$env{'user.name'}; }
4081: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4082: my (%dumphash,%nothide);
4083: if ($context eq 'userroles') {
4084: %dumphash = &dump('roles',$udom,$uname);
4085: } else {
4086: %dumphash = &dump('nohist_userroles',$udom,$uname);
4087: if ($hidepriv) {
4088: my %coursehash=&coursedescription($udom.'_'.$uname);
4089: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4090: if ($user !~ /:/) {
4091: $nothide{join(':',split(/[\@]/,$user))} = 1;
4092: } else {
4093: $nothide{$user} = 1;
4094: }
4095: }
4096: }
4097: }
4098: my %returnhash=();
4099: my $now=time;
4100: my %privileged;
4101: foreach my $entry (keys(%dumphash)) {
4102: my ($role,$tend,$tstart);
4103: if ($context eq 'userroles') {
4104: next if ($entry =~ /^rolesdef/);
4105: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4106: } else {
4107: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4108: }
4109: if (($tstart) && ($tstart<0)) { next; }
4110: my $status = 'active';
4111: if (($tend) && ($tend<=$now)) {
4112: $status = 'previous';
4113: }
4114: if (($tstart) && ($now<$tstart)) {
4115: $status = 'future';
4116: }
4117: if (ref($types) eq 'ARRAY') {
4118: if (!grep(/^\Q$status\E$/,@{$types})) {
4119: next;
4120: }
4121: } else {
4122: if ($status ne 'active') {
4123: next;
4124: }
4125: }
4126: my ($rolecode,$username,$domain,$section,$area);
4127: if ($context eq 'userroles') {
4128: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4129: (undef,$domain,$username,$section) = split(/\//,$area);
4130: } else {
4131: ($role,$username,$domain,$section) = split(/\:/,$entry);
4132: }
4133: if (ref($roledoms) eq 'ARRAY') {
4134: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4135: next;
4136: }
4137: }
4138: if (ref($roles) eq 'ARRAY') {
4139: if (!grep(/^\Q$role\E$/,@{$roles})) {
4140: if ($role =~ /^cr\//) {
4141: if (!grep(/^cr$/,@{$roles})) {
4142: next;
4143: }
4144: } elsif ($role =~ /^gr\//) {
4145: if (!grep(/^gr$/,@{$roles})) {
4146: next;
4147: }
4148: } else {
4149: next;
4150: }
4151: }
4152: }
4153: if ($hidepriv) {
4154: my @privroles = ('dc','su');
4155: if ($context eq 'userroles') {
4156: next if (grep(/^\Q$role\E$/,@privroles));
4157: } else {
4158: my $possdoms = [$domain];
4159: if (ref($roledoms) eq 'ARRAY') {
4160: push(@{$possdoms},@{$roledoms});
4161: }
4162: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4163: if (!$nothide{$username.':'.$domain}) {
4164: next;
4165: }
4166: }
4167: }
4168: }
4169: if ($withsec) {
4170: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4171: $tstart.':'.$tend;
4172: } else {
4173: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4174: }
4175: }
4176: return %returnhash;
4177: }
4178:
4179: # ----------------------------------------------------- Frontpage Announcements
4180: #
4181: #
4182:
4183: sub postannounce {
4184: my ($server,$text)=@_;
4185: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4186: unless ($text=~/\w/) { $text=''; }
4187: return &reply('setannounce:'.&escape($text),$server);
4188: }
4189:
4190: sub getannounce {
4191:
4192: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4193: my $announcement='';
4194: while (my $line = <$fh>) { $announcement .= $line; }
4195: close($fh);
4196: if ($announcement=~/\w/) {
4197: return
4198: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4199: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4200: } else {
4201: return '';
4202: }
4203: } else {
4204: return '';
4205: }
4206: }
4207:
4208: # ---------------------------------------------------------- Course ID routines
4209: # Deal with domain's nohist_courseid.db files
4210: #
4211:
4212: sub courseidput {
4213: my ($domain,$storehash,$coursehome,$caller) = @_;
4214: return unless (ref($storehash) eq 'HASH');
4215: my $outcome;
4216: if ($caller eq 'timeonly') {
4217: my $cids = '';
4218: foreach my $item (keys(%$storehash)) {
4219: $cids.=&escape($item).'&';
4220: }
4221: $cids=~s/\&$//;
4222: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4223: $coursehome);
4224: } else {
4225: my $items = '';
4226: foreach my $item (keys(%$storehash)) {
4227: $items.= &escape($item).'='.
4228: &freeze_escape($$storehash{$item}).'&';
4229: }
4230: $items=~s/\&$//;
4231: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4232: $coursehome);
4233: }
4234: if ($outcome eq 'unknown_cmd') {
4235: my $what;
4236: foreach my $cid (keys(%$storehash)) {
4237: $what .= &escape($cid).'=';
4238: foreach my $item ('description','inst_code','owner','type') {
4239: $what .= &escape($storehash->{$cid}{$item}).':';
4240: }
4241: $what =~ s/\:$/&/;
4242: }
4243: $what =~ s/\&$//;
4244: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4245: } else {
4246: return $outcome;
4247: }
4248: }
4249:
4250: sub courseiddump {
4251: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4252: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4253: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4254: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4255: $hasuniquecode)=@_;
4256: my $as_hash = 1;
4257: my %returnhash;
4258: if (!$domfilter) { $domfilter=''; }
4259: my %libserv = &all_library();
4260: foreach my $tryserver (keys(%libserv)) {
4261: if ( ( $hostidflag == 1
4262: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4263: || (!defined($hostidflag)) ) {
4264:
4265: if (($domfilter eq '') ||
4266: (&host_domain($tryserver) eq $domfilter)) {
4267: my $rep;
4268: if (grep { $_ eq $tryserver } current_machine_ids()) {
4269: $rep = LONCAPA::Lond::dump_course_id_handler(
4270: join(":", (&host_domain($tryserver), $sincefilter,
4271: &escape($descfilter), &escape($instcodefilter),
4272: &escape($ownerfilter), &escape($coursefilter),
4273: &escape($typefilter), &escape($regexp_ok),
4274: $as_hash, &escape($selfenrollonly),
4275: &escape($catfilter), $showhidden, $caller,
4276: &escape($cloner), &escape($cc_clone), $cloneonly,
4277: &escape($createdbefore), &escape($createdafter),
4278: &escape($creationcontext), $domcloner, $hasuniquecode)));
4279: } else {
4280: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4281: $sincefilter.':'.&escape($descfilter).':'.
4282: &escape($instcodefilter).':'.&escape($ownerfilter).
4283: ':'.&escape($coursefilter).':'.&escape($typefilter).
4284: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4285: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4286: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4287: &escape($cc_clone).':'.$cloneonly.':'.
4288: &escape($createdbefore).':'.&escape($createdafter).':'.
4289: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode,
4290: $tryserver);
4291: }
4292:
4293: my @pairs=split(/\&/,$rep);
4294: foreach my $item (@pairs) {
4295: my ($key,$value)=split(/\=/,$item,2);
4296: $key = &unescape($key);
4297: next if ($key =~ /^error: 2 /);
4298: my $result = &thaw_unescape($value);
4299: if (ref($result) eq 'HASH') {
4300: $returnhash{$key}=$result;
4301: } else {
4302: my @responses = split(/:/,$value);
4303: my @items = ('description','inst_code','owner','type');
4304: for (my $i=0; $i<@responses; $i++) {
4305: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4306: }
4307: }
4308: }
4309: }
4310: }
4311: }
4312: return %returnhash;
4313: }
4314:
4315: sub courselastaccess {
4316: my ($cdom,$cnum,$hostidref) = @_;
4317: my %returnhash;
4318: if ($cdom && $cnum) {
4319: my $chome = &homeserver($cnum,$cdom);
4320: if ($chome ne 'no_host') {
4321: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4322: &extract_lastaccess(\%returnhash,$rep);
4323: }
4324: } else {
4325: if (!$cdom) { $cdom=''; }
4326: my %libserv = &all_library();
4327: foreach my $tryserver (keys(%libserv)) {
4328: if (ref($hostidref) eq 'ARRAY') {
4329: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4330: }
4331: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4332: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4333: &extract_lastaccess(\%returnhash,$rep);
4334: }
4335: }
4336: }
4337: return %returnhash;
4338: }
4339:
4340: sub extract_lastaccess {
4341: my ($returnhash,$rep) = @_;
4342: if (ref($returnhash) eq 'HASH') {
4343: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4344: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4345: $rep eq '') {
4346: my @pairs=split(/\&/,$rep);
4347: foreach my $item (@pairs) {
4348: my ($key,$value)=split(/\=/,$item,2);
4349: $key = &unescape($key);
4350: next if ($key =~ /^error: 2 /);
4351: $returnhash->{$key} = &thaw_unescape($value);
4352: }
4353: }
4354: }
4355: return;
4356: }
4357:
4358: # ---------------------------------------------------------- DC e-mail
4359:
4360: sub dcmailput {
4361: my ($domain,$msgid,$message,$server)=@_;
4362: my $status = &Apache::lonnet::critical(
4363: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4364: &escape($message),$server);
4365: return $status;
4366: }
4367:
4368: sub dcmaildump {
4369: my ($dom,$startdate,$enddate,$senders) = @_;
4370: my %returnhash=();
4371:
4372: if (defined(&domain($dom,'primary'))) {
4373: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4374: &escape($enddate).':';
4375: my @esc_senders=map { &escape($_)} @$senders;
4376: $cmd.=&escape(join('&',@esc_senders));
4377: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4378: my ($key,$value) = split(/\=/,$line,2);
4379: if (($key) && ($value)) {
4380: $returnhash{&unescape($key)} = &unescape($value);
4381: }
4382: }
4383: }
4384: return %returnhash;
4385: }
4386: # ---------------------------------------------------------- Domain roles
4387:
4388: sub get_domain_roles {
4389: my ($dom,$roles,$startdate,$enddate)=@_;
4390: if ((!defined($startdate)) || ($startdate eq '')) {
4391: $startdate = '.';
4392: }
4393: if ((!defined($enddate)) || ($enddate eq '')) {
4394: $enddate = '.';
4395: }
4396: my $rolelist;
4397: if (ref($roles) eq 'ARRAY') {
4398: $rolelist = join('&',@{$roles});
4399: }
4400: my %personnel = ();
4401:
4402: my %servers = &get_servers($dom,'library');
4403: foreach my $tryserver (keys(%servers)) {
4404: %{$personnel{$tryserver}}=();
4405: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4406: &escape($startdate).':'.
4407: &escape($enddate).':'.
4408: &escape($rolelist), $tryserver))) {
4409: my ($key,$value) = split(/\=/,$line,2);
4410: if (($key) && ($value)) {
4411: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4412: }
4413: }
4414: }
4415: return %personnel;
4416: }
4417:
4418: # ----------------------------------------------------------- Interval timing
4419:
4420: {
4421: # Caches needed for speedup of navmaps
4422: # We don't want to cache this for very long at all (5 seconds at most)
4423: #
4424: # The user for whom we cache
4425: my $cachedkey='';
4426: # The cached times for this user
4427: my %cachedtimes=();
4428: # When this was last done
4429: my $cachedtime=();
4430:
4431: sub load_all_first_access {
4432: my ($uname,$udom)=@_;
4433: if (($cachedkey eq $uname.':'.$udom) &&
4434: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4435: return;
4436: }
4437: $cachedtime=time;
4438: $cachedkey=$uname.':'.$udom;
4439: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4440: }
4441:
4442: sub get_first_access {
4443: my ($type,$argsymb,$argmap)=@_;
4444: my ($symb,$courseid,$udom,$uname)=&whichuser();
4445: if ($argsymb) { $symb=$argsymb; }
4446: my ($map,$id,$res)=&decode_symb($symb);
4447: if ($argmap) { $map = $argmap; }
4448: if ($type eq 'course') {
4449: $res='course';
4450: } elsif ($type eq 'map') {
4451: $res=&symbread($map);
4452: } else {
4453: $res=$symb;
4454: }
4455: &load_all_first_access($uname,$udom);
4456: return $cachedtimes{"$courseid\0$res"};
4457: }
4458:
4459: sub set_first_access {
4460: my ($type,$interval)=@_;
4461: my ($symb,$courseid,$udom,$uname)=&whichuser();
4462: my ($map,$id,$res)=&decode_symb($symb);
4463: if ($type eq 'course') {
4464: $res='course';
4465: } elsif ($type eq 'map') {
4466: $res=&symbread($map);
4467: } else {
4468: $res=$symb;
4469: }
4470: $cachedkey='';
4471: my $firstaccess=&get_first_access($type,$symb,$map);
4472: if (!$firstaccess) {
4473: my $start = time;
4474: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4475: $udom,$uname);
4476: if ($putres eq 'ok') {
4477: &put('timerinterval',{"$courseid\0$res"=>$interval},
4478: $udom,$uname);
4479: &appenv(
4480: {
4481: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4482: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4483: }
4484: );
4485: }
4486: return $putres;
4487: }
4488: return 'already_set';
4489: }
4490: }
4491: # --------------------------------------------- Set Expire Date for Spreadsheet
4492:
4493: sub expirespread {
4494: my ($uname,$udom,$stype,$usymb)=@_;
4495: my $cid=$env{'request.course.id'};
4496: if ($cid) {
4497: my $now=time;
4498: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4499: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4500: $env{'course.'.$cid.'.num'}.
4501: ':nohist_expirationdates:'.
4502: &escape($key).'='.$now,
4503: $env{'course.'.$cid.'.home'})
4504: }
4505: return 'ok';
4506: }
4507:
4508: # ----------------------------------------------------- Devalidate Spreadsheets
4509:
4510: sub devalidate {
4511: my ($symb,$uname,$udom)=@_;
4512: my $cid=$env{'request.course.id'};
4513: if ($cid) {
4514: # delete the stored spreadsheets for
4515: # - the student level sheet of this user in course's homespace
4516: # - the assessment level sheet for this resource
4517: # for this user in user's homespace
4518: # - current conditional state info
4519: my $key=$uname.':'.$udom.':';
4520: my $status=
4521: &del('nohist_calculatedsheets',
4522: [$key.'studentcalc:'],
4523: $env{'course.'.$cid.'.domain'},
4524: $env{'course.'.$cid.'.num'})
4525: .' '.
4526: &del('nohist_calculatedsheets_'.$cid,
4527: [$key.'assesscalc:'.$symb],$udom,$uname);
4528: unless ($status eq 'ok ok') {
4529: &logthis('Could not devalidate spreadsheet '.
4530: $uname.' at '.$udom.' for '.
4531: $symb.': '.$status);
4532: }
4533: &delenv('user.state.'.$cid);
4534: }
4535: }
4536:
4537: sub get_scalar {
4538: my ($string,$end) = @_;
4539: my $value;
4540: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4541: $value = $1;
4542: } elsif ($$string =~ s/^([^&]*?)&//) {
4543: $value = $1;
4544: }
4545: return &unescape($value);
4546: }
4547:
4548: sub array2str {
4549: my (@array) = @_;
4550: my $result=&arrayref2str(\@array);
4551: $result=~s/^__ARRAY_REF__//;
4552: $result=~s/__END_ARRAY_REF__$//;
4553: return $result;
4554: }
4555:
4556: sub arrayref2str {
4557: my ($arrayref) = @_;
4558: my $result='__ARRAY_REF__';
4559: foreach my $elem (@$arrayref) {
4560: if(ref($elem) eq 'ARRAY') {
4561: $result.=&arrayref2str($elem).'&';
4562: } elsif(ref($elem) eq 'HASH') {
4563: $result.=&hashref2str($elem).'&';
4564: } elsif(ref($elem)) {
4565: #print("Got a ref of ".(ref($elem))." skipping.");
4566: } else {
4567: $result.=&escape($elem).'&';
4568: }
4569: }
4570: $result=~s/\&$//;
4571: $result .= '__END_ARRAY_REF__';
4572: return $result;
4573: }
4574:
4575: sub hash2str {
4576: my (%hash) = @_;
4577: my $result=&hashref2str(\%hash);
4578: $result=~s/^__HASH_REF__//;
4579: $result=~s/__END_HASH_REF__$//;
4580: return $result;
4581: }
4582:
4583: sub hashref2str {
4584: my ($hashref)=@_;
4585: my $result='__HASH_REF__';
4586: foreach my $key (sort(keys(%$hashref))) {
4587: if (ref($key) eq 'ARRAY') {
4588: $result.=&arrayref2str($key).'=';
4589: } elsif (ref($key) eq 'HASH') {
4590: $result.=&hashref2str($key).'=';
4591: } elsif (ref($key)) {
4592: $result.='=';
4593: #print("Got a ref of ".(ref($key))." skipping.");
4594: } else {
4595: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4596: }
4597:
4598: if(ref($hashref->{$key}) eq 'ARRAY') {
4599: $result.=&arrayref2str($hashref->{$key}).'&';
4600: } elsif(ref($hashref->{$key}) eq 'HASH') {
4601: $result.=&hashref2str($hashref->{$key}).'&';
4602: } elsif(ref($hashref->{$key})) {
4603: $result.='&';
4604: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4605: } else {
4606: $result.=&escape($hashref->{$key}).'&';
4607: }
4608: }
4609: $result=~s/\&$//;
4610: $result .= '__END_HASH_REF__';
4611: return $result;
4612: }
4613:
4614: sub str2hash {
4615: my ($string)=@_;
4616: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4617: return %$hash;
4618: }
4619:
4620: sub str2hashref {
4621: my ($string) = @_;
4622:
4623: my %hash;
4624:
4625: if($string !~ /^__HASH_REF__/) {
4626: if (! ($string eq '' || !defined($string))) {
4627: $hash{'error'}='Not hash reference';
4628: }
4629: return (\%hash, $string);
4630: }
4631:
4632: $string =~ s/^__HASH_REF__//;
4633:
4634: while($string !~ /^__END_HASH_REF__/) {
4635: #key
4636: my $key='';
4637: if($string =~ /^__HASH_REF__/) {
4638: ($key, $string)=&str2hashref($string);
4639: if(defined($key->{'error'})) {
4640: $hash{'error'}='Bad data';
4641: return (\%hash, $string);
4642: }
4643: } elsif($string =~ /^__ARRAY_REF__/) {
4644: ($key, $string)=&str2arrayref($string);
4645: if($key->[0] eq 'Array reference error') {
4646: $hash{'error'}='Bad data';
4647: return (\%hash, $string);
4648: }
4649: } else {
4650: $string =~ s/^(.*?)=//;
4651: $key=&unescape($1);
4652: }
4653: $string =~ s/^=//;
4654:
4655: #value
4656: my $value='';
4657: if($string =~ /^__HASH_REF__/) {
4658: ($value, $string)=&str2hashref($string);
4659: if(defined($value->{'error'})) {
4660: $hash{'error'}='Bad data';
4661: return (\%hash, $string);
4662: }
4663: } elsif($string =~ /^__ARRAY_REF__/) {
4664: ($value, $string)=&str2arrayref($string);
4665: if($value->[0] eq 'Array reference error') {
4666: $hash{'error'}='Bad data';
4667: return (\%hash, $string);
4668: }
4669: } else {
4670: $value=&get_scalar(\$string,'__END_HASH_REF__');
4671: }
4672: $string =~ s/^&//;
4673:
4674: $hash{$key}=$value;
4675: }
4676:
4677: $string =~ s/^__END_HASH_REF__//;
4678:
4679: return (\%hash, $string);
4680: }
4681:
4682: sub str2array {
4683: my ($string)=@_;
4684: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4685: return @$array;
4686: }
4687:
4688: sub str2arrayref {
4689: my ($string) = @_;
4690: my @array;
4691:
4692: if($string !~ /^__ARRAY_REF__/) {
4693: if (! ($string eq '' || !defined($string))) {
4694: $array[0]='Array reference error';
4695: }
4696: return (\@array, $string);
4697: }
4698:
4699: $string =~ s/^__ARRAY_REF__//;
4700:
4701: while($string !~ /^__END_ARRAY_REF__/) {
4702: my $value='';
4703: if($string =~ /^__HASH_REF__/) {
4704: ($value, $string)=&str2hashref($string);
4705: if(defined($value->{'error'})) {
4706: $array[0] ='Array reference error';
4707: return (\@array, $string);
4708: }
4709: } elsif($string =~ /^__ARRAY_REF__/) {
4710: ($value, $string)=&str2arrayref($string);
4711: if($value->[0] eq 'Array reference error') {
4712: $array[0] ='Array reference error';
4713: return (\@array, $string);
4714: }
4715: } else {
4716: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4717: }
4718: $string =~ s/^&//;
4719:
4720: push(@array, $value);
4721: }
4722:
4723: $string =~ s/^__END_ARRAY_REF__//;
4724:
4725: return (\@array, $string);
4726: }
4727:
4728: # -------------------------------------------------------------------Temp Store
4729:
4730: sub tmpreset {
4731: my ($symb,$namespace,$domain,$stuname) = @_;
4732: if (!$symb) {
4733: $symb=&symbread();
4734: if (!$symb) { $symb= $env{'request.url'}; }
4735: }
4736: $symb=escape($symb);
4737:
4738: if (!$namespace) { $namespace=$env{'request.state'}; }
4739: $namespace=~s/\//\_/g;
4740: $namespace=~s/\W//g;
4741:
4742: if (!$domain) { $domain=$env{'user.domain'}; }
4743: if (!$stuname) { $stuname=$env{'user.name'}; }
4744: if ($domain eq 'public' && $stuname eq 'public') {
4745: $stuname=$ENV{'REMOTE_ADDR'};
4746: }
4747: my $path=LONCAPA::tempdir();
4748: my %hash;
4749: if (tie(%hash,'GDBM_File',
4750: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4751: &GDBM_WRCREAT(),0640)) {
4752: foreach my $key (keys(%hash)) {
4753: if ($key=~ /:$symb/) {
4754: delete($hash{$key});
4755: }
4756: }
4757: }
4758: }
4759:
4760: sub tmpstore {
4761: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4762:
4763: if (!$symb) {
4764: $symb=&symbread();
4765: if (!$symb) { $symb= $env{'request.url'}; }
4766: }
4767: $symb=escape($symb);
4768:
4769: if (!$namespace) {
4770: # I don't think we would ever want to store this for a course.
4771: # it seems this will only be used if we don't have a course.
4772: #$namespace=$env{'request.course.id'};
4773: #if (!$namespace) {
4774: $namespace=$env{'request.state'};
4775: #}
4776: }
4777: $namespace=~s/\//\_/g;
4778: $namespace=~s/\W//g;
4779: if (!$domain) { $domain=$env{'user.domain'}; }
4780: if (!$stuname) { $stuname=$env{'user.name'}; }
4781: if ($domain eq 'public' && $stuname eq 'public') {
4782: $stuname=$ENV{'REMOTE_ADDR'};
4783: }
4784: my $now=time;
4785: my %hash;
4786: my $path=LONCAPA::tempdir();
4787: if (tie(%hash,'GDBM_File',
4788: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4789: &GDBM_WRCREAT(),0640)) {
4790: $hash{"version:$symb"}++;
4791: my $version=$hash{"version:$symb"};
4792: my $allkeys='';
4793: foreach my $key (keys(%$storehash)) {
4794: $allkeys.=$key.':';
4795: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4796: }
4797: $hash{"$version:$symb:timestamp"}=$now;
4798: $allkeys.='timestamp';
4799: $hash{"$version:keys:$symb"}=$allkeys;
4800: if (untie(%hash)) {
4801: return 'ok';
4802: } else {
4803: return "error:$!";
4804: }
4805: } else {
4806: return "error:$!";
4807: }
4808: }
4809:
4810: # -----------------------------------------------------------------Temp Restore
4811:
4812: sub tmprestore {
4813: my ($symb,$namespace,$domain,$stuname) = @_;
4814:
4815: if (!$symb) {
4816: $symb=&symbread();
4817: if (!$symb) { $symb= $env{'request.url'}; }
4818: }
4819: $symb=escape($symb);
4820:
4821: if (!$namespace) { $namespace=$env{'request.state'}; }
4822:
4823: if (!$domain) { $domain=$env{'user.domain'}; }
4824: if (!$stuname) { $stuname=$env{'user.name'}; }
4825: if ($domain eq 'public' && $stuname eq 'public') {
4826: $stuname=$ENV{'REMOTE_ADDR'};
4827: }
4828: my %returnhash;
4829: $namespace=~s/\//\_/g;
4830: $namespace=~s/\W//g;
4831: my %hash;
4832: my $path=LONCAPA::tempdir();
4833: if (tie(%hash,'GDBM_File',
4834: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4835: &GDBM_READER(),0640)) {
4836: my $version=$hash{"version:$symb"};
4837: $returnhash{'version'}=$version;
4838: my $scope;
4839: for ($scope=1;$scope<=$version;$scope++) {
4840: my $vkeys=$hash{"$scope:keys:$symb"};
4841: my @keys=split(/:/,$vkeys);
4842: my $key;
4843: $returnhash{"$scope:keys"}=$vkeys;
4844: foreach $key (@keys) {
4845: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4846: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4847: }
4848: }
4849: if (!(untie(%hash))) {
4850: return "error:$!";
4851: }
4852: } else {
4853: return "error:$!";
4854: }
4855: return %returnhash;
4856: }
4857:
4858: # ----------------------------------------------------------------------- Store
4859:
4860: sub store {
4861: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
4862: my $home='';
4863:
4864: if ($stuname) { $home=&homeserver($stuname,$domain); }
4865:
4866: $symb=&symbclean($symb);
4867: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4868:
4869: if (!$domain) { $domain=$env{'user.domain'}; }
4870: if (!$stuname) { $stuname=$env{'user.name'}; }
4871:
4872: &devalidate($symb,$stuname,$domain);
4873:
4874: $symb=escape($symb);
4875: if (!$namespace) {
4876: unless ($namespace=$env{'request.course.id'}) {
4877: return '';
4878: }
4879: }
4880: if (!$home) { $home=$env{'user.home'}; }
4881:
4882: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4883: $$storehash{'host'}=$perlvar{'lonHostID'};
4884:
4885: my $namevalue='';
4886: foreach my $key (keys(%$storehash)) {
4887: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4888: }
4889: $namevalue=~s/\&$//;
4890: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4891: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
4892: }
4893:
4894: # -------------------------------------------------------------- Critical Store
4895:
4896: sub cstore {
4897: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
4898: my $home='';
4899:
4900: if ($stuname) { $home=&homeserver($stuname,$domain); }
4901:
4902: $symb=&symbclean($symb);
4903: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4904:
4905: if (!$domain) { $domain=$env{'user.domain'}; }
4906: if (!$stuname) { $stuname=$env{'user.name'}; }
4907:
4908: &devalidate($symb,$stuname,$domain);
4909:
4910: $symb=escape($symb);
4911: if (!$namespace) {
4912: unless ($namespace=$env{'request.course.id'}) {
4913: return '';
4914: }
4915: }
4916: if (!$home) { $home=$env{'user.home'}; }
4917:
4918: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4919: $$storehash{'host'}=$perlvar{'lonHostID'};
4920:
4921: my $namevalue='';
4922: foreach my $key (keys(%$storehash)) {
4923: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4924: }
4925: $namevalue=~s/\&$//;
4926: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4927: return critical
4928: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
4929: }
4930:
4931: # --------------------------------------------------------------------- Restore
4932:
4933: sub restore {
4934: my ($symb,$namespace,$domain,$stuname) = @_;
4935: my $home='';
4936:
4937: if ($stuname) { $home=&homeserver($stuname,$domain); }
4938:
4939: if (!$symb) {
4940: return if ($namespace eq 'courserequests');
4941: unless ($symb=escape(&symbread())) { return ''; }
4942: } else {
4943: unless ($namespace eq 'courserequests') {
4944: $symb=&escape(&symbclean($symb));
4945: }
4946: }
4947: if (!$namespace) {
4948: unless ($namespace=$env{'request.course.id'}) {
4949: return '';
4950: }
4951: }
4952: if (!$domain) { $domain=$env{'user.domain'}; }
4953: if (!$stuname) { $stuname=$env{'user.name'}; }
4954: if (!$home) { $home=$env{'user.home'}; }
4955: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4956:
4957: my %returnhash=();
4958: foreach my $line (split(/\&/,$answer)) {
4959: my ($name,$value)=split(/\=/,$line);
4960: $returnhash{&unescape($name)}=&thaw_unescape($value);
4961: }
4962: my $version;
4963: for ($version=1;$version<=$returnhash{'version'};$version++) {
4964: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4965: $returnhash{$item}=$returnhash{$version.':'.$item};
4966: }
4967: }
4968: return %returnhash;
4969: }
4970:
4971: # ---------------------------------------------------------- Course Description
4972: #
4973: #
4974:
4975: sub coursedescription {
4976: my ($courseid,$args)=@_;
4977: $courseid=~s/^\///;
4978: $courseid=~s/\_/\//g;
4979: my ($cdomain,$cnum)=split(/\//,$courseid);
4980: my $chome=&homeserver($cnum,$cdomain);
4981: my $normalid=$cdomain.'_'.$cnum;
4982: # need to always cache even if we get errors otherwise we keep
4983: # trying and trying and trying to get the course description.
4984: my %envhash=();
4985: my %returnhash=();
4986:
4987: my $expiretime=600;
4988: if ($env{'request.course.id'} eq $normalid) {
4989: $expiretime=120;
4990: }
4991:
4992: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4993: if (!$args->{'freshen_cache'}
4994: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4995: foreach my $key (keys(%env)) {
4996: next if ($key !~ /^\Q$prefix\E(.*)/);
4997: my ($setting) = $1;
4998: $returnhash{$setting} = $env{$key};
4999: }
5000: return %returnhash;
5001: }
5002:
5003: # get the data again
5004:
5005: if (!$args->{'one_time'}) {
5006: $envhash{'course.'.$normalid.'.last_cache'}=time;
5007: }
5008:
5009: if ($chome ne 'no_host') {
5010: %returnhash=&dump('environment',$cdomain,$cnum);
5011: if (!exists($returnhash{'con_lost'})) {
5012: my $username = $env{'user.name'}; # Defult username
5013: if(defined $args->{'user'}) {
5014: $username = $args->{'user'};
5015: }
5016: $returnhash{'home'}= $chome;
5017: $returnhash{'domain'} = $cdomain;
5018: $returnhash{'num'} = $cnum;
5019: if (!defined($returnhash{'type'})) {
5020: $returnhash{'type'} = 'Course';
5021: }
5022: while (my ($name,$value) = each %returnhash) {
5023: $envhash{'course.'.$normalid.'.'.$name}=$value;
5024: }
5025: $returnhash{'url'}=&clutter($returnhash{'url'});
5026: $returnhash{'fn'}=LONCAPA::tempdir() .
5027: $username.'_'.$cdomain.'_'.$cnum;
5028: $envhash{'course.'.$normalid.'.home'}=$chome;
5029: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5030: $envhash{'course.'.$normalid.'.num'}=$cnum;
5031: }
5032: }
5033: if (!$args->{'one_time'}) {
5034: &appenv(\%envhash);
5035: }
5036: return %returnhash;
5037: }
5038:
5039: sub update_released_required {
5040: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5041: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5042: $cid = $env{'request.course.id'};
5043: $cdom = $env{'course.'.$cid.'.domain'};
5044: $cnum = $env{'course.'.$cid.'.num'};
5045: $chome = $env{'course.'.$cid.'.home'};
5046: }
5047: if ($needsrelease) {
5048: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5049: my $needsupdate;
5050: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5051: $needsupdate = 1;
5052: } else {
5053: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5054: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5055: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5056: $needsupdate = 1;
5057: }
5058: }
5059: if ($needsupdate) {
5060: my %needshash = (
5061: 'internal.releaserequired' => $needsrelease,
5062: );
5063: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5064: if ($putresult eq 'ok') {
5065: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5066: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5067: if (ref($crsinfo{$cid}) eq 'HASH') {
5068: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5069: &courseidput($cdom,\%crsinfo,$chome,'notime');
5070: }
5071: }
5072: }
5073: }
5074: return;
5075: }
5076:
5077: # -------------------------------------------------See if a user is privileged
5078:
5079: sub privileged {
5080: my ($username,$domain,$possdomains,$possroles)=@_;
5081: my $now = time;
5082: my $roles;
5083: if (ref($possroles) eq 'ARRAY') {
5084: $roles = $possroles;
5085: } else {
5086: $roles = ['dc','su'];
5087: }
5088: if (ref($possdomains) eq 'ARRAY') {
5089: my %privileged = &privileged_by_domain($possdomains,$roles);
5090: foreach my $dom (@{$possdomains}) {
5091: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5092: (ref($privileged{$dom}) eq 'HASH')) {
5093: foreach my $role (@{$roles}) {
5094: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5095: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5096: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5097: return 1 unless (($end && $end < $now) ||
5098: ($start && $start > $now));
5099: }
5100: }
5101: }
5102: }
5103: }
5104: } else {
5105: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5106: my $now = time;
5107:
5108: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5109: my ($trole, $tend, $tstart) = split(/_/, $role);
5110: if (grep(/^\Q$trole\E$/,@{$roles})) {
5111: return 1 unless ($tend && $tend < $now)
5112: or ($tstart && $tstart > $now);
5113: }
5114: }
5115: }
5116: return 0;
5117: }
5118:
5119: sub privileged_by_domain {
5120: my ($domains,$roles) = @_;
5121: my %privileged = ();
5122: my $cachetime = 60*60*24;
5123: my $now = time;
5124: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5125: return %privileged;
5126: }
5127: foreach my $dom (@{$domains}) {
5128: next if (ref($privileged{$dom}) eq 'HASH');
5129: my $needroles;
5130: foreach my $role (@{$roles}) {
5131: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5132: if (defined($cached)) {
5133: if (ref($result) eq 'HASH') {
5134: $privileged{$dom}{$role} = $result;
5135: }
5136: } else {
5137: $needroles = 1;
5138: }
5139: }
5140: if ($needroles) {
5141: my %dompersonnel = &get_domain_roles($dom,$roles);
5142: $privileged{$dom} = {};
5143: foreach my $server (keys(%dompersonnel)) {
5144: if (ref($dompersonnel{$server}) eq 'HASH') {
5145: foreach my $item (keys(%{$dompersonnel{$server}})) {
5146: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5147: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5148: next if ($end && $end < $now);
5149: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5150: $dompersonnel{$server}{$item};
5151: }
5152: }
5153: }
5154: if (ref($privileged{$dom}) eq 'HASH') {
5155: foreach my $role (@{$roles}) {
5156: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5157: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5158: } else {
5159: my %hash = ();
5160: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5161: }
5162: }
5163: }
5164: }
5165: }
5166: return %privileged;
5167: }
5168:
5169: # -------------------------------------------------------- Get user privileges
5170:
5171: sub rolesinit {
5172: my ($domain, $username) = @_;
5173: my %userroles = ('user.login.time' => time);
5174: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5175:
5176: # firstaccess and timerinterval are related to timed maps/resources.
5177: # also, blocking can be triggered by an activating timer
5178: # it's saved in the user's %env.
5179: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5180: my %timerinterval = &dump('timerinterval', $domain, $username);
5181: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5182: %timerintchk, %timerintenv);
5183:
5184: foreach my $key (keys(%firstaccess)) {
5185: my ($cid, $rest) = split(/\0/, $key);
5186: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5187: }
5188:
5189: foreach my $key (keys(%timerinterval)) {
5190: my ($cid,$rest) = split(/\0/,$key);
5191: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5192: }
5193:
5194: my %allroles=();
5195: my %allgroups=();
5196:
5197: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5198: my $role = $rolesdump{$area};
5199: $area =~ s/\_\w\w$//;
5200:
5201: my ($trole, $tend, $tstart, $group_privs);
5202:
5203: if ($role =~ /^cr/) {
5204: # Custom role, defined by a user
5205: # e.g., user.role.cr/msu/smith/mynewrole
5206: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5207: $trole = $1;
5208: ($tend, $tstart) = split('_', $2);
5209: } else {
5210: $trole = $role;
5211: }
5212: } elsif ($role =~ m|^gr/|) {
5213: # Role of member in a group, defined within a course/community
5214: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5215: ($trole, $tend, $tstart) = split(/_/, $role);
5216: next if $tstart eq '-1';
5217: ($trole, $group_privs) = split(/\//, $trole);
5218: $group_privs = &unescape($group_privs);
5219: } else {
5220: # Just a normal role, defined in roles.tab
5221: ($trole, $tend, $tstart) = split(/_/,$role);
5222: }
5223:
5224: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5225: $username);
5226: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5227:
5228: # role expired or not available yet?
5229: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5230: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5231:
5232: next if $area eq '' or $trole eq '';
5233:
5234: my $spec = "$trole.$area";
5235: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5236:
5237: if ($trole =~ /^cr\//) {
5238: # Custom role, defined by a user
5239: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5240: } elsif ($trole eq 'gr') {
5241: # Role of a member in a group, defined within a course/community
5242: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5243: next;
5244: } else {
5245: # Normal role, defined in roles.tab
5246: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5247: }
5248:
5249: my $cid = $tdomain.'_'.$trest;
5250: unless ($firstaccchk{$cid}) {
5251: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5252: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5253: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5254: $coursetimerstarts{$cid}{$item};
5255: }
5256: }
5257: $firstaccchk{$cid} = 1;
5258: }
5259: unless ($timerintchk{$cid}) {
5260: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5261: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5262: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5263: $coursetimerintervals{$cid}{$item};
5264: }
5265: }
5266: $timerintchk{$cid} = 1;
5267: }
5268: }
5269:
5270: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5271: \%allroles, \%allgroups);
5272: $env{'user.adv'} = $userroles{'user.adv'};
5273:
5274: return (\%userroles,\%firstaccenv,\%timerintenv);
5275: }
5276:
5277: sub set_arearole {
5278: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5279: unless ($nolog) {
5280: # log the associated role with the area
5281: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5282: }
5283: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5284: }
5285:
5286: sub custom_roleprivs {
5287: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5288: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5289: my $homsvr = &homeserver($rauthor,$rdomain);
5290: if (&hostname($homsvr) ne '') {
5291: my ($rdummy,$roledef)=
5292: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5293: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5294: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5295: if (defined($syspriv)) {
5296: if ($trest =~ /^$match_community$/) {
5297: $syspriv =~ s/bre\&S//;
5298: }
5299: $$allroles{'cm./'}.=':'.$syspriv;
5300: $$allroles{$spec.'./'}.=':'.$syspriv;
5301: }
5302: if ($tdomain ne '') {
5303: if (defined($dompriv)) {
5304: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5305: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5306: }
5307: if (($trest ne '') && (defined($coursepriv))) {
5308: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5309: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5310: }
5311: }
5312: }
5313: }
5314: }
5315:
5316: sub group_roleprivs {
5317: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5318: my $access = 1;
5319: my $now = time;
5320: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5321: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5322: if ($access) {
5323: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5324: $$allgroups{$course}{$group} .=':'.$group_privs;
5325: }
5326: }
5327:
5328: sub standard_roleprivs {
5329: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5330: if (defined($pr{$trole.':s'})) {
5331: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5332: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5333: }
5334: if ($tdomain ne '') {
5335: if (defined($pr{$trole.':d'})) {
5336: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5337: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5338: }
5339: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5340: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5341: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5342: }
5343: }
5344: }
5345:
5346: sub set_userprivs {
5347: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5348: my $author=0;
5349: my $adv=0;
5350: my %grouproles = ();
5351: if (keys(%{$allgroups}) > 0) {
5352: my @groupkeys;
5353: foreach my $role (keys(%{$allroles})) {
5354: push(@groupkeys,$role);
5355: }
5356: if (ref($groups_roles) eq 'HASH') {
5357: foreach my $key (keys(%{$groups_roles})) {
5358: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5359: push(@groupkeys,$key);
5360: }
5361: }
5362: }
5363: if (@groupkeys > 0) {
5364: foreach my $role (@groupkeys) {
5365: my ($trole,$area,$sec,$extendedarea);
5366: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5367: $trole = $1;
5368: $area = $2;
5369: $sec = $3;
5370: $extendedarea = $area.$sec;
5371: if (exists($$allgroups{$area})) {
5372: foreach my $group (keys(%{$$allgroups{$area}})) {
5373: my $spec = $trole.'.'.$extendedarea;
5374: $grouproles{$spec.'.'.$area.'/'.$group} =
5375: $$allgroups{$area}{$group};
5376: }
5377: }
5378: }
5379: }
5380: }
5381: }
5382: foreach my $group (keys(%grouproles)) {
5383: $$allroles{$group} = $grouproles{$group};
5384: }
5385: foreach my $role (keys(%{$allroles})) {
5386: my %thesepriv;
5387: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5388: foreach my $item (split(/:/,$$allroles{$role})) {
5389: if ($item ne '') {
5390: my ($privilege,$restrictions)=split(/&/,$item);
5391: if ($restrictions eq '') {
5392: $thesepriv{$privilege}='F';
5393: } elsif ($thesepriv{$privilege} ne 'F') {
5394: $thesepriv{$privilege}.=$restrictions;
5395: }
5396: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5397: }
5398: }
5399: my $thesestr='';
5400: foreach my $priv (sort(keys(%thesepriv))) {
5401: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5402: }
5403: $userroles->{'user.priv.'.$role} = $thesestr;
5404: }
5405: return ($author,$adv);
5406: }
5407:
5408: sub role_status {
5409: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5410: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5411: my ($one,$two) = split(m{\./},$rolekey,2);
5412: (undef,undef,$$role) = split(/\./,$one,3);
5413: unless (!defined($$role) || $$role eq '') {
5414: $$where = '/'.$two;
5415: $$trolecode=$$role.'.'.$$where;
5416: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5417: $$tstatus='is';
5418: if ($$tstart && $$tstart>$update) {
5419: $$tstatus='future';
5420: if ($$tstart<$now) {
5421: if ($$tstart && $$tstart>$refresh) {
5422: if (($$where ne '') && ($$role ne '')) {
5423: my (%allroles,%allgroups,$group_privs,
5424: %groups_roles,@rolecodes);
5425: my %userroles = (
5426: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5427: );
5428: @rolecodes = ('cm');
5429: my $spec=$$role.'.'.$$where;
5430: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5431: if ($$role =~ /^cr\//) {
5432: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5433: push(@rolecodes,'cr');
5434: } elsif ($$role eq 'gr') {
5435: push(@rolecodes,$$role);
5436: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5437: $env{'user.name'});
5438: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5439: (undef,my $group_privs) = split(/\//,$trole);
5440: $group_privs = &unescape($group_privs);
5441: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5442: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5443: &get_groups_roles($tdomain,$trest,
5444: \%course_roles,\@rolecodes,
5445: \%groups_roles);
5446: } else {
5447: push(@rolecodes,$$role);
5448: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5449: }
5450: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5451: &appenv(\%userroles,\@rolecodes);
5452: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5453: }
5454: }
5455: $$tstatus = 'is';
5456: }
5457: }
5458: if ($$tend) {
5459: if ($$tend<$update) {
5460: $$tstatus='expired';
5461: } elsif ($$tend<$now) {
5462: $$tstatus='will_not';
5463: }
5464: }
5465: }
5466: }
5467: }
5468:
5469: sub get_groups_roles {
5470: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5471: return unless((ref($cdom_courseroles) eq 'HASH') &&
5472: (ref($rolecodes) eq 'ARRAY') &&
5473: (ref($groups_roles) eq 'HASH'));
5474: if (keys(%{$cdom_courseroles}) > 0) {
5475: my ($cnum) = ($rest =~ /^($match_courseid)/);
5476: if ($cdom ne '' && $cnum ne '') {
5477: foreach my $key (keys(%{$cdom_courseroles})) {
5478: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5479: my $crsrole = $1;
5480: my $crssec = $2;
5481: if ($crsrole =~ /^cr/) {
5482: unless (grep(/^cr$/,@{$rolecodes})) {
5483: push(@{$rolecodes},'cr');
5484: }
5485: } else {
5486: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5487: push(@{$rolecodes},$crsrole);
5488: }
5489: }
5490: my $rolekey = "$crsrole./$cdom/$cnum";
5491: if ($crssec ne '') {
5492: $rolekey .= "/$crssec";
5493: }
5494: $rolekey .= './';
5495: $groups_roles->{$rolekey} = $rolecodes;
5496: }
5497: }
5498: }
5499: }
5500: return;
5501: }
5502:
5503: sub delete_env_groupprivs {
5504: my ($where,$courseroles,$possroles) = @_;
5505: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5506: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5507: unless (ref($courseroles->{$udom}) eq 'HASH') {
5508: %{$courseroles->{$udom}} =
5509: &get_my_roles('','','userroles',['active'],
5510: $possroles,[$udom],1);
5511: }
5512: if (ref($courseroles->{$udom}) eq 'HASH') {
5513: foreach my $item (keys(%{$courseroles->{$udom}})) {
5514: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5515: my $area = '/'.$cdom.'/'.$cnum;
5516: my $privkey = "user.priv.$crsrole.$area";
5517: if ($crssec ne '') {
5518: $privkey .= '/'.$crssec;
5519: }
5520: $privkey .= ".$area/$group";
5521: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5522: }
5523: }
5524: return;
5525: }
5526:
5527: sub check_adhoc_privs {
5528: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5529: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5530: my $setprivs;
5531: if ($env{$cckey}) {
5532: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5533: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5534: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5535: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5536: $setprivs = 1;
5537: }
5538: } else {
5539: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5540: $setprivs = 1;
5541: }
5542: return $setprivs;
5543: }
5544:
5545: sub set_adhoc_privileges {
5546: # role can be cc or ca
5547: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5548: my $area = '/'.$dcdom.'/'.$pickedcourse;
5549: my $spec = $role.'.'.$area;
5550: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5551: $env{'user.name'},1);
5552: my %ccrole = ();
5553: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5554: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5555: &appenv(\%userroles,[$role,'cm']);
5556: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5557: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5558: &appenv( {'request.role' => $spec,
5559: 'request.role.domain' => $dcdom,
5560: 'request.course.sec' => ''
5561: }
5562: );
5563: my $tadv=0;
5564: if (&allowed('adv') eq 'F') { $tadv=1; }
5565: &appenv({'request.role.adv' => $tadv});
5566: }
5567: }
5568:
5569: # --------------------------------------------------------------- get interface
5570:
5571: sub get {
5572: my ($namespace,$storearr,$udomain,$uname)=@_;
5573: my $items='';
5574: foreach my $item (@$storearr) {
5575: $items.=&escape($item).'&';
5576: }
5577: $items=~s/\&$//;
5578: if (!$udomain) { $udomain=$env{'user.domain'}; }
5579: if (!$uname) { $uname=$env{'user.name'}; }
5580: my $uhome=&homeserver($uname,$udomain);
5581:
5582: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5583: my @pairs=split(/\&/,$rep);
5584: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5585: return @pairs;
5586: }
5587: my %returnhash=();
5588: my $i=0;
5589: foreach my $item (@$storearr) {
5590: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5591: $i++;
5592: }
5593: return %returnhash;
5594: }
5595:
5596: # --------------------------------------------------------------- del interface
5597:
5598: sub del {
5599: my ($namespace,$storearr,$udomain,$uname)=@_;
5600: my $items='';
5601: foreach my $item (@$storearr) {
5602: $items.=&escape($item).'&';
5603: }
5604:
5605: $items=~s/\&$//;
5606: if (!$udomain) { $udomain=$env{'user.domain'}; }
5607: if (!$uname) { $uname=$env{'user.name'}; }
5608: my $uhome=&homeserver($uname,$udomain);
5609: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5610: }
5611:
5612: # -------------------------------------------------------------- dump interface
5613:
5614: sub unserialize {
5615: my ($rep, $escapedkeys) = @_;
5616:
5617: return {} if $rep =~ /^error/;
5618:
5619: my %returnhash=();
5620: foreach my $item (split(/\&/,$rep)) {
5621: my ($key, $value) = split(/=/, $item, 2);
5622: $key = unescape($key) unless $escapedkeys;
5623: next if $key =~ /^error: 2 /;
5624: $returnhash{$key} = &thaw_unescape($value);
5625: }
5626: #return %returnhash;
5627: return \%returnhash;
5628: }
5629:
5630: # see Lond::dump_with_regexp
5631: # if $escapedkeys hash keys won't get unescaped.
5632: sub dump {
5633: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5634: if (!$udomain) { $udomain=$env{'user.domain'}; }
5635: if (!$uname) { $uname=$env{'user.name'}; }
5636: my $uhome=&homeserver($uname,$udomain);
5637:
5638: if ($regexp) {
5639: $regexp=&escape($regexp);
5640: } else {
5641: $regexp='.';
5642: }
5643: if (grep { $_ eq $uhome } current_machine_ids()) {
5644: # user is hosted on this machine
5645: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5646: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5647: return %{unserialize($reply, $escapedkeys)};
5648: }
5649: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5650: my @pairs=split(/\&/,$rep);
5651: my %returnhash=();
5652: if (!($rep =~ /^error/ )) {
5653: foreach my $item (@pairs) {
5654: my ($key,$value)=split(/=/,$item,2);
5655: $key = unescape($key) unless $escapedkeys;
5656: #$key = &unescape($key);
5657: next if ($key =~ /^error: 2 /);
5658: $returnhash{$key}=&thaw_unescape($value);
5659: }
5660: }
5661: return %returnhash;
5662: }
5663:
5664:
5665: # --------------------------------------------------------- dumpstore interface
5666:
5667: sub dumpstore {
5668: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5669: # same as dump but keys must be escaped. They may contain colon separated
5670: # lists of values that may themself contain colons (e.g. symbs).
5671: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5672: }
5673:
5674: # -------------------------------------------------------------- keys interface
5675:
5676: sub getkeys {
5677: my ($namespace,$udomain,$uname)=@_;
5678: if (!$udomain) { $udomain=$env{'user.domain'}; }
5679: if (!$uname) { $uname=$env{'user.name'}; }
5680: my $uhome=&homeserver($uname,$udomain);
5681: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5682: my @keyarray=();
5683: foreach my $key (split(/\&/,$rep)) {
5684: next if ($key =~ /^error: 2 /);
5685: push(@keyarray,&unescape($key));
5686: }
5687: return @keyarray;
5688: }
5689:
5690: # --------------------------------------------------------------- currentdump
5691: sub currentdump {
5692: my ($courseid,$sdom,$sname)=@_;
5693: $courseid = $env{'request.course.id'} if (! defined($courseid));
5694: $sdom = $env{'user.domain'} if (! defined($sdom));
5695: $sname = $env{'user.name'} if (! defined($sname));
5696: my $uhome = &homeserver($sname,$sdom);
5697: my $rep;
5698:
5699: if (grep { $_ eq $uhome } current_machine_ids()) {
5700: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5701: $courseid)));
5702: } else {
5703: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5704: }
5705:
5706: return if ($rep =~ /^(error:|no_such_host)/);
5707: #
5708: my %returnhash=();
5709: #
5710: if ($rep eq "unknown_cmd") {
5711: # an old lond will not know currentdump
5712: # Do a dump and make it look like a currentdump
5713: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5714: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5715: my %hash = @tmp;
5716: @tmp=();
5717: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5718: } else {
5719: my @pairs=split(/\&/,$rep);
5720: foreach my $pair (@pairs) {
5721: my ($key,$value)=split(/=/,$pair,2);
5722: my ($symb,$param) = split(/:/,$key);
5723: $returnhash{&unescape($symb)}->{&unescape($param)} =
5724: &thaw_unescape($value);
5725: }
5726: }
5727: return %returnhash;
5728: }
5729:
5730: sub convert_dump_to_currentdump{
5731: my %hash = %{shift()};
5732: my %returnhash;
5733: # Code ripped from lond, essentially. The only difference
5734: # here is the unescaping done by lonnet::dump(). Conceivably
5735: # we might run in to problems with parameter names =~ /^v\./
5736: while (my ($key,$value) = each(%hash)) {
5737: my ($v,$symb,$param) = split(/:/,$key);
5738: $symb = &unescape($symb);
5739: $param = &unescape($param);
5740: next if ($v eq 'version' || $symb eq 'keys');
5741: next if (exists($returnhash{$symb}) &&
5742: exists($returnhash{$symb}->{$param}) &&
5743: $returnhash{$symb}->{'v.'.$param} > $v);
5744: $returnhash{$symb}->{$param}=$value;
5745: $returnhash{$symb}->{'v.'.$param}=$v;
5746: }
5747: #
5748: # Remove all of the keys in the hashes which keep track of
5749: # the version of the parameter.
5750: while (my ($symb,$param_hash) = each(%returnhash)) {
5751: # use a foreach because we are going to delete from the hash.
5752: foreach my $key (keys(%$param_hash)) {
5753: delete($param_hash->{$key}) if ($key =~ /^v\./);
5754: }
5755: }
5756: return \%returnhash;
5757: }
5758:
5759: # ------------------------------------------------------ critical inc interface
5760:
5761: sub cinc {
5762: return &inc(@_,'critical');
5763: }
5764:
5765: # --------------------------------------------------------------- inc interface
5766:
5767: sub inc {
5768: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5769: if (!$udomain) { $udomain=$env{'user.domain'}; }
5770: if (!$uname) { $uname=$env{'user.name'}; }
5771: my $uhome=&homeserver($uname,$udomain);
5772: my $items='';
5773: if (! ref($store)) {
5774: # got a single value, so use that instead
5775: $items = &escape($store).'=&';
5776: } elsif (ref($store) eq 'SCALAR') {
5777: $items = &escape($$store).'=&';
5778: } elsif (ref($store) eq 'ARRAY') {
5779: $items = join('=&',map {&escape($_);} @{$store});
5780: } elsif (ref($store) eq 'HASH') {
5781: while (my($key,$value) = each(%{$store})) {
5782: $items.= &escape($key).'='.&escape($value).'&';
5783: }
5784: }
5785: $items=~s/\&$//;
5786: if ($critical) {
5787: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5788: } else {
5789: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5790: }
5791: }
5792:
5793: # --------------------------------------------------------------- put interface
5794:
5795: sub put {
5796: my ($namespace,$storehash,$udomain,$uname)=@_;
5797: if (!$udomain) { $udomain=$env{'user.domain'}; }
5798: if (!$uname) { $uname=$env{'user.name'}; }
5799: my $uhome=&homeserver($uname,$udomain);
5800: my $items='';
5801: foreach my $item (keys(%$storehash)) {
5802: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5803: }
5804: $items=~s/\&$//;
5805: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5806: }
5807:
5808: # ------------------------------------------------------------ newput interface
5809:
5810: sub newput {
5811: my ($namespace,$storehash,$udomain,$uname)=@_;
5812: if (!$udomain) { $udomain=$env{'user.domain'}; }
5813: if (!$uname) { $uname=$env{'user.name'}; }
5814: my $uhome=&homeserver($uname,$udomain);
5815: my $items='';
5816: foreach my $key (keys(%$storehash)) {
5817: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5818: }
5819: $items=~s/\&$//;
5820: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5821: }
5822:
5823: # --------------------------------------------------------- putstore interface
5824:
5825: sub putstore {
5826: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
5827: if (!$udomain) { $udomain=$env{'user.domain'}; }
5828: if (!$uname) { $uname=$env{'user.name'}; }
5829: my $uhome=&homeserver($uname,$udomain);
5830: my $items='';
5831: foreach my $key (keys(%$storehash)) {
5832: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5833: }
5834: $items=~s/\&$//;
5835: my $esc_symb=&escape($symb);
5836: my $esc_v=&escape($version);
5837: my $reply =
5838: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5839: $uhome);
5840: if (($tolog) && ($reply eq 'ok')) {
5841: my $namevalue='';
5842: foreach my $key (keys(%{$storehash})) {
5843: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5844: }
5845: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
5846: '&host='.&escape($perlvar{'lonHostID'}).
5847: '&version='.$esc_v.
5848: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
5849: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
5850: }
5851: if ($reply eq 'unknown_cmd') {
5852: # gfall back to way things use to be done
5853: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5854: $uname);
5855: }
5856: return $reply;
5857: }
5858:
5859: sub old_putstore {
5860: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5861: if (!$udomain) { $udomain=$env{'user.domain'}; }
5862: if (!$uname) { $uname=$env{'user.name'}; }
5863: my $uhome=&homeserver($uname,$udomain);
5864: my %newstorehash;
5865: foreach my $item (keys(%$storehash)) {
5866: my $key = $version.':'.&escape($symb).':'.$item;
5867: $newstorehash{$key} = $storehash->{$item};
5868: }
5869: my $items='';
5870: my %allitems = ();
5871: foreach my $item (keys(%newstorehash)) {
5872: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5873: my $key = $1.':keys:'.$2;
5874: $allitems{$key} .= $3.':';
5875: }
5876: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5877: }
5878: foreach my $item (keys(%allitems)) {
5879: $allitems{$item} =~ s/\:$//;
5880: $items.= $item.'='.$allitems{$item}.'&';
5881: }
5882: $items=~s/\&$//;
5883: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5884: }
5885:
5886: # ------------------------------------------------------ critical put interface
5887:
5888: sub cput {
5889: my ($namespace,$storehash,$udomain,$uname)=@_;
5890: if (!$udomain) { $udomain=$env{'user.domain'}; }
5891: if (!$uname) { $uname=$env{'user.name'}; }
5892: my $uhome=&homeserver($uname,$udomain);
5893: my $items='';
5894: foreach my $item (keys(%$storehash)) {
5895: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5896: }
5897: $items=~s/\&$//;
5898: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5899: }
5900:
5901: # -------------------------------------------------------------- eget interface
5902:
5903: sub eget {
5904: my ($namespace,$storearr,$udomain,$uname)=@_;
5905: my $items='';
5906: foreach my $item (@$storearr) {
5907: $items.=&escape($item).'&';
5908: }
5909: $items=~s/\&$//;
5910: if (!$udomain) { $udomain=$env{'user.domain'}; }
5911: if (!$uname) { $uname=$env{'user.name'}; }
5912: my $uhome=&homeserver($uname,$udomain);
5913: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5914: my @pairs=split(/\&/,$rep);
5915: my %returnhash=();
5916: my $i=0;
5917: foreach my $item (@$storearr) {
5918: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5919: $i++;
5920: }
5921: return %returnhash;
5922: }
5923:
5924: # ------------------------------------------------------------ tmpput interface
5925: sub tmpput {
5926: my ($storehash,$server,$context)=@_;
5927: my $items='';
5928: foreach my $item (keys(%$storehash)) {
5929: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5930: }
5931: $items=~s/\&$//;
5932: if (defined($context)) {
5933: $items .= ':'.&escape($context);
5934: }
5935: return &reply("tmpput:$items",$server);
5936: }
5937:
5938: # ------------------------------------------------------------ tmpget interface
5939: sub tmpget {
5940: my ($token,$server)=@_;
5941: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5942: my $rep=&reply("tmpget:$token",$server);
5943: my %returnhash;
5944: foreach my $item (split(/\&/,$rep)) {
5945: my ($key,$value)=split(/=/,$item);
5946: next if ($key =~ /^error: 2 /);
5947: $returnhash{&unescape($key)}=&thaw_unescape($value);
5948: }
5949: return %returnhash;
5950: }
5951:
5952: # ------------------------------------------------------------ tmpdel interface
5953: sub tmpdel {
5954: my ($token,$server)=@_;
5955: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5956: return &reply("tmpdel:$token",$server);
5957: }
5958:
5959: # ------------------------------------------------------------ get_timebased_id
5960:
5961: sub get_timebased_id {
5962: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
5963: $maxtries) = @_;
5964: my ($newid,$error,$dellock);
5965: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
5966: return ('','ok','invalid call to get suffix');
5967: }
5968:
5969: # set defaults for any optional args for which values were not supplied
5970: if ($who eq '') {
5971: $who = $env{'user.name'}.':'.$env{'user.domain'};
5972: }
5973: if (!$locktries) {
5974: $locktries = 3;
5975: }
5976: if (!$maxtries) {
5977: $maxtries = 10;
5978: }
5979:
5980: if (($cdom eq '') || ($cnum eq '')) {
5981: if ($env{'request.course.id'}) {
5982: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5983: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5984: }
5985: if (($cdom eq '') || ($cnum eq '')) {
5986: return ('','ok','call to get suffix not in course context');
5987: }
5988: }
5989:
5990: # construct locking item
5991: my $lockhash = {
5992: $prefix."\0".'locked_'.$keyid => $who,
5993: };
5994: my $tries = 0;
5995:
5996: # attempt to get lock on nohist_$namespace file
5997: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5998: while (($gotlock ne 'ok') && $tries <$locktries) {
5999: $tries ++;
6000: sleep 1;
6001: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6002: }
6003:
6004: # attempt to get unique identifier, based on current timestamp
6005: if ($gotlock eq 'ok') {
6006: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6007: my $id = time;
6008: $newid = $id;
6009: if ($idtype eq 'addcode') {
6010: $newid .= &sixnum_code();
6011: }
6012: my $idtries = 0;
6013: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6014: if ($idtype eq 'concat') {
6015: $newid = $id.$idtries;
6016: } elsif ($idtype eq 'addcode') {
6017: $newid = $newid.&sixnum_code();
6018: } else {
6019: $newid ++;
6020: }
6021: $idtries ++;
6022: }
6023: if (!exists($inuse{$prefix."\0".$newid})) {
6024: my %new_item = (
6025: $prefix."\0".$newid => $who,
6026: );
6027: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6028: $cdom,$cnum);
6029: if ($putresult ne 'ok') {
6030: undef($newid);
6031: $error = 'error saving new item: '.$putresult;
6032: }
6033: } else {
6034: undef($newid);
6035: $error = ('error: no unique suffix available for the new item ');
6036: }
6037: # remove lock
6038: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6039: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6040: } else {
6041: $error = "error: could not obtain lockfile\n";
6042: $dellock = 'ok';
6043: }
6044: return ($newid,$dellock,$error);
6045: }
6046:
6047: sub sixnum_code {
6048: my $code;
6049: for (0..6) {
6050: $code .= int( rand(9) );
6051: }
6052: return $code;
6053: }
6054:
6055: # -------------------------------------------------- portfolio access checking
6056:
6057: sub portfolio_access {
6058: my ($requrl,$clientip) = @_;
6059: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6060: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6061: if ($result) {
6062: my %setters;
6063: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6064: my ($startblock,$endblock) =
6065: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6066: if ($startblock && $endblock) {
6067: return 'B';
6068: }
6069: } else {
6070: my ($startblock,$endblock) =
6071: &Apache::loncommon::blockcheck(\%setters,'port');
6072: if ($startblock && $endblock) {
6073: return 'B';
6074: }
6075: }
6076: }
6077: if ($result eq 'ok') {
6078: return 'F';
6079: } elsif ($result =~ /^[^:]+:guest_/) {
6080: return 'A';
6081: }
6082: return '';
6083: }
6084:
6085: sub get_portfolio_access {
6086: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6087:
6088: if (!ref($access_hash)) {
6089: my $current_perms = &get_portfile_permissions($udom,$unum);
6090: my %access_controls = &get_access_controls($current_perms,$group,
6091: $file_name);
6092: $access_hash = $access_controls{$file_name};
6093: }
6094:
6095: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6096: my $now = time;
6097: if (ref($access_hash) eq 'HASH') {
6098: foreach my $key (keys(%{$access_hash})) {
6099: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6100: if ($start > $now) {
6101: next;
6102: }
6103: if ($end && $end<$now) {
6104: next;
6105: }
6106: if ($scope eq 'public') {
6107: $public = $key;
6108: last;
6109: } elsif ($scope eq 'guest') {
6110: $guest = $key;
6111: } elsif ($scope eq 'domains') {
6112: push(@domains,$key);
6113: } elsif ($scope eq 'users') {
6114: push(@users,$key);
6115: } elsif ($scope eq 'course') {
6116: push(@courses,$key);
6117: } elsif ($scope eq 'group') {
6118: push(@groups,$key);
6119: } elsif ($scope eq 'ip') {
6120: push(@ips,$key);
6121: }
6122: }
6123: if ($public) {
6124: return 'ok';
6125: } elsif (@ips > 0) {
6126: my $allowed;
6127: foreach my $ipkey (@ips) {
6128: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6129: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6130: $allowed = 1;
6131: last;
6132: }
6133: }
6134: }
6135: if ($allowed) {
6136: return 'ok';
6137: }
6138: }
6139: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6140: if ($guest) {
6141: return $guest;
6142: }
6143: } else {
6144: if (@domains > 0) {
6145: foreach my $domkey (@domains) {
6146: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6147: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6148: return 'ok';
6149: }
6150: }
6151: }
6152: }
6153: if (@users > 0) {
6154: foreach my $userkey (@users) {
6155: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6156: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6157: if (ref($item) eq 'HASH') {
6158: if (($item->{'uname'} eq $env{'user.name'}) &&
6159: ($item->{'udom'} eq $env{'user.domain'})) {
6160: return 'ok';
6161: }
6162: }
6163: }
6164: }
6165: }
6166: }
6167: my %roleshash;
6168: my @courses_and_groups = @courses;
6169: push(@courses_and_groups,@groups);
6170: if (@courses_and_groups > 0) {
6171: my (%allgroups,%allroles);
6172: my ($start,$end,$role,$sec,$group);
6173: foreach my $envkey (%env) {
6174: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6175: my $cid = $2.'_'.$3;
6176: if ($1 eq 'gr') {
6177: $group = $4;
6178: $allgroups{$cid}{$group} = $env{$envkey};
6179: } else {
6180: if ($4 eq '') {
6181: $sec = 'none';
6182: } else {
6183: $sec = $4;
6184: }
6185: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6186: }
6187: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6188: my $cid = $2.'_'.$3;
6189: if ($4 eq '') {
6190: $sec = 'none';
6191: } else {
6192: $sec = $4;
6193: }
6194: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6195: }
6196: }
6197: if (keys(%allroles) == 0) {
6198: return;
6199: }
6200: foreach my $key (@courses_and_groups) {
6201: my %content = %{$$access_hash{$key}};
6202: my $cnum = $content{'number'};
6203: my $cdom = $content{'domain'};
6204: my $cid = $cdom.'_'.$cnum;
6205: if (!exists($allroles{$cid})) {
6206: next;
6207: }
6208: foreach my $role_id (keys(%{$content{'roles'}})) {
6209: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6210: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6211: my @status = @{$content{'roles'}{$role_id}{'access'}};
6212: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6213: foreach my $role (keys(%{$allroles{$cid}})) {
6214: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6215: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6216: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6217: if (grep/^all$/,@sections) {
6218: return 'ok';
6219: } else {
6220: if (grep/^$sec$/,@sections) {
6221: return 'ok';
6222: }
6223: }
6224: }
6225: }
6226: if (keys(%{$allgroups{$cid}}) == 0) {
6227: if (grep/^none$/,@groups) {
6228: return 'ok';
6229: }
6230: } else {
6231: if (grep/^all$/,@groups) {
6232: return 'ok';
6233: }
6234: foreach my $group (keys(%{$allgroups{$cid}})) {
6235: if (grep/^$group$/,@groups) {
6236: return 'ok';
6237: }
6238: }
6239: }
6240: }
6241: }
6242: }
6243: }
6244: }
6245: if ($guest) {
6246: return $guest;
6247: }
6248: }
6249: }
6250: return;
6251: }
6252:
6253: sub course_group_datechecker {
6254: my ($dates,$now,$status) = @_;
6255: my ($start,$end) = split(/\./,$dates);
6256: if (!$start && !$end) {
6257: return 'ok';
6258: }
6259: if (grep/^active$/,@{$status}) {
6260: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6261: return 'ok';
6262: }
6263: }
6264: if (grep/^previous$/,@{$status}) {
6265: if ($end > $now ) {
6266: return 'ok';
6267: }
6268: }
6269: if (grep/^future$/,@{$status}) {
6270: if ($start > $now) {
6271: return 'ok';
6272: }
6273: }
6274: return;
6275: }
6276:
6277: sub parse_portfolio_url {
6278: my ($url) = @_;
6279:
6280: my ($type,$udom,$unum,$group,$file_name);
6281:
6282: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6283: $type = 1;
6284: $udom = $1;
6285: $unum = $2;
6286: $file_name = $3;
6287: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6288: $type = 2;
6289: $udom = $1;
6290: $unum = $2;
6291: $group = $3;
6292: $file_name = $3.'/'.$4;
6293: }
6294: if (wantarray) {
6295: return ($type,$udom,$unum,$file_name,$group);
6296: }
6297: return $type;
6298: }
6299:
6300: sub is_portfolio_url {
6301: my ($url) = @_;
6302: return scalar(&parse_portfolio_url($url));
6303: }
6304:
6305: sub is_portfolio_file {
6306: my ($file) = @_;
6307: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6308: return 1;
6309: }
6310: return;
6311: }
6312:
6313: sub usertools_access {
6314: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6315: my ($access,%tools);
6316: if ($context eq '') {
6317: $context = 'tools';
6318: }
6319: if ($context eq 'requestcourses') {
6320: %tools = (
6321: official => 1,
6322: unofficial => 1,
6323: community => 1,
6324: textbook => 1,
6325: );
6326: } elsif ($context eq 'requestauthor') {
6327: %tools = (
6328: requestauthor => 1,
6329: );
6330: } else {
6331: %tools = (
6332: aboutme => 1,
6333: blog => 1,
6334: webdav => 1,
6335: portfolio => 1,
6336: );
6337: }
6338: return if (!defined($tools{$tool}));
6339:
6340: if (($udom eq '') || ($uname eq '')) {
6341: $udom = $env{'user.domain'};
6342: $uname = $env{'user.name'};
6343: }
6344:
6345: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6346: if ($action ne 'reload') {
6347: if ($context eq 'requestcourses') {
6348: return $env{'environment.canrequest.'.$tool};
6349: } elsif ($context eq 'requestauthor') {
6350: return $env{'environment.canrequest.author'};
6351: } else {
6352: return $env{'environment.availabletools.'.$tool};
6353: }
6354: }
6355: }
6356:
6357: my ($toolstatus,$inststatus,$envkey);
6358: if ($context eq 'requestauthor') {
6359: $envkey = $context;
6360: } else {
6361: $envkey = $context.'.'.$tool;
6362: }
6363:
6364: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6365: ($action ne 'reload')) {
6366: $toolstatus = $env{'environment.'.$envkey};
6367: $inststatus = $env{'environment.inststatus'};
6368: } else {
6369: if (ref($userenvref) eq 'HASH') {
6370: $toolstatus = $userenvref->{$envkey};
6371: $inststatus = $userenvref->{'inststatus'};
6372: } else {
6373: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6374: $toolstatus = $userenv{$envkey};
6375: $inststatus = $userenv{'inststatus'};
6376: }
6377: }
6378:
6379: if ($toolstatus ne '') {
6380: if ($toolstatus) {
6381: $access = 1;
6382: } else {
6383: $access = 0;
6384: }
6385: return $access;
6386: }
6387:
6388: my ($is_adv,%domdef);
6389: if (ref($is_advref) eq 'HASH') {
6390: $is_adv = $is_advref->{'is_adv'};
6391: } else {
6392: $is_adv = &is_advanced_user($udom,$uname);
6393: }
6394: if (ref($domdefref) eq 'HASH') {
6395: %domdef = %{$domdefref};
6396: } else {
6397: %domdef = &get_domain_defaults($udom);
6398: }
6399: if (ref($domdef{$tool}) eq 'HASH') {
6400: if ($is_adv) {
6401: if ($domdef{$tool}{'_LC_adv'} ne '') {
6402: if ($domdef{$tool}{'_LC_adv'}) {
6403: $access = 1;
6404: } else {
6405: $access = 0;
6406: }
6407: return $access;
6408: }
6409: }
6410: if ($inststatus ne '') {
6411: my ($hasaccess,$hasnoaccess);
6412: foreach my $affiliation (split(/:/,$inststatus)) {
6413: if ($domdef{$tool}{$affiliation} ne '') {
6414: if ($domdef{$tool}{$affiliation}) {
6415: $hasaccess = 1;
6416: } else {
6417: $hasnoaccess = 1;
6418: }
6419: }
6420: }
6421: if ($hasaccess || $hasnoaccess) {
6422: if ($hasaccess) {
6423: $access = 1;
6424: } elsif ($hasnoaccess) {
6425: $access = 0;
6426: }
6427: return $access;
6428: }
6429: } else {
6430: if ($domdef{$tool}{'default'} ne '') {
6431: if ($domdef{$tool}{'default'}) {
6432: $access = 1;
6433: } elsif ($domdef{$tool}{'default'} == 0) {
6434: $access = 0;
6435: }
6436: return $access;
6437: }
6438: }
6439: } else {
6440: if (($context eq 'tools') && ($tool ne 'webdav')) {
6441: $access = 1;
6442: } else {
6443: $access = 0;
6444: }
6445: return $access;
6446: }
6447: }
6448:
6449: sub is_course_owner {
6450: my ($cdom,$cnum,$udom,$uname) = @_;
6451: if (($udom eq '') || ($uname eq '')) {
6452: $udom = $env{'user.domain'};
6453: $uname = $env{'user.name'};
6454: }
6455: unless (($udom eq '') || ($uname eq '')) {
6456: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6457: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6458: return 1;
6459: } else {
6460: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6461: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6462: return 1;
6463: }
6464: }
6465: }
6466: }
6467: return;
6468: }
6469:
6470: sub is_advanced_user {
6471: my ($udom,$uname) = @_;
6472: if ($udom ne '' && $uname ne '') {
6473: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6474: if (wantarray) {
6475: return ($env{'user.adv'},$env{'user.author'});
6476: } else {
6477: return $env{'user.adv'};
6478: }
6479: }
6480: }
6481: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6482: my %allroles;
6483: my ($is_adv,$is_author);
6484: foreach my $role (keys(%roleshash)) {
6485: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6486: my $area = '/'.$tdomain.'/'.$trest;
6487: if ($sec ne '') {
6488: $area .= '/'.$sec;
6489: }
6490: if (($area ne '') && ($trole ne '')) {
6491: my $spec=$trole.'.'.$area;
6492: if ($trole =~ /^cr\//) {
6493: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6494: } elsif ($trole ne 'gr') {
6495: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6496: }
6497: if ($trole eq 'au') {
6498: $is_author = 1;
6499: }
6500: }
6501: }
6502: foreach my $role (keys(%allroles)) {
6503: last if ($is_adv);
6504: foreach my $item (split(/:/,$allroles{$role})) {
6505: if ($item ne '') {
6506: my ($privilege,$restrictions)=split(/&/,$item);
6507: if ($privilege eq 'adv') {
6508: $is_adv = 1;
6509: last;
6510: }
6511: }
6512: }
6513: }
6514: if (wantarray) {
6515: return ($is_adv,$is_author);
6516: }
6517: return $is_adv;
6518: }
6519:
6520: sub check_can_request {
6521: my ($dom,$can_request,$request_domains) = @_;
6522: my $canreq = 0;
6523: my ($types,$typename) = &Apache::loncommon::course_types();
6524: my @options = ('approval','validate','autolimit');
6525: my $optregex = join('|',@options);
6526: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6527: foreach my $type (@{$types}) {
6528: if (&usertools_access($env{'user.name'},
6529: $env{'user.domain'},
6530: $type,undef,'requestcourses')) {
6531: $canreq ++;
6532: if (ref($request_domains) eq 'HASH') {
6533: push(@{$request_domains->{$type}},$env{'user.domain'});
6534: }
6535: if ($dom eq $env{'user.domain'}) {
6536: $can_request->{$type} = 1;
6537: }
6538: }
6539: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6540: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6541: if (@curr > 0) {
6542: foreach my $item (@curr) {
6543: if (ref($request_domains) eq 'HASH') {
6544: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6545: if ($otherdom ne '') {
6546: if (ref($request_domains->{$type}) eq 'ARRAY') {
6547: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6548: push(@{$request_domains->{$type}},$otherdom);
6549: }
6550: } else {
6551: push(@{$request_domains->{$type}},$otherdom);
6552: }
6553: }
6554: }
6555: }
6556: unless($dom eq $env{'user.domain'}) {
6557: $canreq ++;
6558: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6559: $can_request->{$type} = 1;
6560: }
6561: }
6562: }
6563: }
6564: }
6565: }
6566: return $canreq;
6567: }
6568:
6569: # ---------------------------------------------- Custom access rule evaluation
6570:
6571: sub customaccess {
6572: my ($priv,$uri)=@_;
6573: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6574: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6575: $udom = &LONCAPA::clean_domain($udom);
6576: $ucrs = &LONCAPA::clean_username($ucrs);
6577: my $access=0;
6578: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6579: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6580: if ($type eq 'user') {
6581: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6582: my ($tdom,$tuname)=split(m{/},$scope);
6583: if ($tdom) {
6584: if ($tdom ne $env{'user.domain'}) { next; }
6585: }
6586: if ($tuname) {
6587: if ($tuname ne $env{'user.name'}) { next; }
6588: }
6589: $access=($effect eq 'allow');
6590: last;
6591: }
6592: } else {
6593: if ($role) {
6594: if ($role ne $urole) { next; }
6595: }
6596: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6597: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6598: if ($tdom) {
6599: if ($tdom ne $udom) { next; }
6600: }
6601: if ($tcrs) {
6602: if ($tcrs ne $ucrs) { next; }
6603: }
6604: if ($tsec) {
6605: if ($tsec ne $usec) { next; }
6606: }
6607: $access=($effect eq 'allow');
6608: last;
6609: }
6610: if ($realm eq '' && $role eq '') {
6611: $access=($effect eq 'allow');
6612: }
6613: }
6614: }
6615: return $access;
6616: }
6617:
6618: # ------------------------------------------------- Check for a user privilege
6619:
6620: sub allowed {
6621: my ($priv,$uri,$symb,$role,$clientip)=@_;
6622: my $ver_orguri=$uri;
6623: $uri=&deversion($uri);
6624: my $orguri=$uri;
6625: $uri=&declutter($uri);
6626:
6627: if ($priv eq 'evb') {
6628: # Evade communication block restrictions for specified role in a course
6629: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6630: return $1;
6631: } else {
6632: return;
6633: }
6634: }
6635:
6636: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6637: # Free bre access to adm and meta resources
6638: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6639: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6640: && ($priv eq 'bre')) {
6641: return 'F';
6642: }
6643:
6644: # Free bre access to user's own portfolio contents
6645: my ($space,$domain,$name,@dir)=split('/',$uri);
6646: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6647: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6648: my %setters;
6649: my ($startblock,$endblock) =
6650: &Apache::loncommon::blockcheck(\%setters,'port');
6651: if ($startblock && $endblock) {
6652: return 'B';
6653: } else {
6654: return 'F';
6655: }
6656: }
6657:
6658: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6659: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6660: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6661: if (exists($env{'request.course.id'})) {
6662: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6663: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6664: if (($domain eq $cdom) && ($name eq $cnum)) {
6665: my $courseprivid=$env{'request.course.id'};
6666: $courseprivid=~s/\_/\//;
6667: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6668: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6669: return $1;
6670: } else {
6671: if ($env{'request.course.sec'}) {
6672: $courseprivid.='/'.$env{'request.course.sec'};
6673: }
6674: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6675: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6676: return $2;
6677: }
6678: }
6679: }
6680: }
6681: }
6682:
6683: # Free bre to public access
6684:
6685: if ($priv eq 'bre') {
6686: my $copyright=&metadata($uri,'copyright');
6687: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6688: return 'F';
6689: }
6690: if ($copyright eq 'priv') {
6691: $uri=~/([^\/]+)\/([^\/]+)\//;
6692: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6693: return '';
6694: }
6695: }
6696: if ($copyright eq 'domain') {
6697: $uri=~/([^\/]+)\/([^\/]+)\//;
6698: unless (($env{'user.domain'} eq $1) ||
6699: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6700: return '';
6701: }
6702: }
6703: if ($env{'request.role'}=~ /li\.\//) {
6704: # Library role, so allow browsing of resources in this domain.
6705: return 'F';
6706: }
6707: if ($copyright eq 'custom') {
6708: unless (&customaccess($priv,$uri)) { return ''; }
6709: }
6710: }
6711: # Domain coordinator is trying to create a course
6712: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6713: # uri is the requested domain in this case.
6714: # comparison to 'request.role.domain' shows if the user has selected
6715: # a role of dc for the domain in question.
6716: return 'F' if ($uri eq $env{'request.role.domain'});
6717: }
6718:
6719: my $thisallowed='';
6720: my $statecond=0;
6721: my $courseprivid='';
6722:
6723: my $ownaccess;
6724: # Community Coordinator or Assistant Co-author browsing resource space.
6725: if (($priv eq 'bro') && ($env{'user.author'})) {
6726: if ($uri eq '') {
6727: $ownaccess = 1;
6728: } else {
6729: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6730: my $udom = $env{'user.domain'};
6731: my $uname = $env{'user.name'};
6732: if ($uri =~ m{^\Q$udom\E/?$}) {
6733: $ownaccess = 1;
6734: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6735: unless ($uri =~ m{\.\./}) {
6736: $ownaccess = 1;
6737: }
6738: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6739: my $now = time;
6740: if ($uri =~ m{^([^/]+)/?$}) {
6741: my $adom = $1;
6742: foreach my $key (keys(%env)) {
6743: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6744: my ($start,$end) = split('.',$env{$key});
6745: if (($now >= $start) && (!$end || $end < $now)) {
6746: $ownaccess = 1;
6747: last;
6748: }
6749: }
6750: }
6751: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6752: my $adom = $1;
6753: my $aname = $2;
6754: foreach my $role ('ca','aa') {
6755: if ($env{"user.role.$role./$adom/$aname"}) {
6756: my ($start,$end) =
6757: split('.',$env{"user.role.$role./$adom/$aname"});
6758: if (($now >= $start) && (!$end || $end < $now)) {
6759: $ownaccess = 1;
6760: last;
6761: }
6762: }
6763: }
6764: }
6765: }
6766: }
6767: }
6768: }
6769:
6770: # Course
6771:
6772: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6773: unless (($priv eq 'bro') && (!$ownaccess)) {
6774: $thisallowed.=$1;
6775: }
6776: }
6777:
6778: # Domain
6779:
6780: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6781: =~/\Q$priv\E\&([^\:]*)/) {
6782: unless (($priv eq 'bro') && (!$ownaccess)) {
6783: $thisallowed.=$1;
6784: }
6785: }
6786:
6787: # User who is not author or co-author might still be able to edit
6788: # resource of an author in the domain (e.g., if Domain Coordinator).
6789: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6790: (&allowed('mdc',$env{'request.course.id'}))) {
6791: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6792: $thisallowed.=$1;
6793: }
6794: }
6795:
6796: # Course: uri itself is a course
6797: my $courseuri=$uri;
6798: $courseuri=~s/\_(\d)/\/$1/;
6799: $courseuri=~s/^([^\/])/\/$1/;
6800:
6801: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6802: =~/\Q$priv\E\&([^\:]*)/) {
6803: unless (($priv eq 'bro') && (!$ownaccess)) {
6804: $thisallowed.=$1;
6805: }
6806: }
6807:
6808: # URI is an uploaded document for this course, default permissions don't matter
6809: # not allowing 'edit' access (editupload) to uploaded course docs
6810: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6811: $thisallowed='';
6812: my ($match)=&is_on_map($uri);
6813: if ($match) {
6814: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6815: =~/\Q$priv\E\&([^\:]*)/) {
6816: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6817: if (@blockers > 0) {
6818: $thisallowed = 'B';
6819: } else {
6820: $thisallowed.=$1;
6821: }
6822: }
6823: } else {
6824: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6825: if ($refuri) {
6826: if ($refuri =~ m|^/adm/|) {
6827: $thisallowed='F';
6828: } else {
6829: $refuri=&declutter($refuri);
6830: my ($match) = &is_on_map($refuri);
6831: if ($match) {
6832: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6833: if (@blockers > 0) {
6834: $thisallowed = 'B';
6835: } else {
6836: $thisallowed='F';
6837: }
6838: }
6839: }
6840: }
6841: }
6842: }
6843:
6844: if ($priv eq 'bre'
6845: && $thisallowed ne 'F'
6846: && $thisallowed ne '2'
6847: && &is_portfolio_url($uri)) {
6848: $thisallowed = &portfolio_access($uri,$clientip);
6849: }
6850:
6851: # Full access at system, domain or course-wide level? Exit.
6852: if ($thisallowed=~/F/) {
6853: return 'F';
6854: }
6855:
6856: # If this is generating or modifying users, exit with special codes
6857:
6858: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6859: if (($priv eq 'cca') || ($priv eq 'caa')) {
6860: my ($audom,$auname)=split('/',$uri);
6861: # no author name given, so this just checks on the general right to make a co-author in this domain
6862: unless ($auname) { return $thisallowed; }
6863: # an author name is given, so we are about to actually make a co-author for a certain account
6864: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6865: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6866: ($audom ne $env{'request.role.domain'}))) { return ''; }
6867: }
6868: return $thisallowed;
6869: }
6870: #
6871: # Gathered so far: system, domain and course wide privileges
6872: #
6873: # Course: See if uri or referer is an individual resource that is part of
6874: # the course
6875:
6876: if ($env{'request.course.id'}) {
6877:
6878: $courseprivid=$env{'request.course.id'};
6879: if ($env{'request.course.sec'}) {
6880: $courseprivid.='/'.$env{'request.course.sec'};
6881: }
6882: $courseprivid=~s/\_/\//;
6883: my $checkreferer=1;
6884: my ($match,$cond)=&is_on_map($uri);
6885: if ($match) {
6886: $statecond=$cond;
6887: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6888: =~/\Q$priv\E\&([^\:]*)/) {
6889: my $value = $1;
6890: if ($priv eq 'bre') {
6891: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6892: if (@blockers > 0) {
6893: $thisallowed = 'B';
6894: } else {
6895: $thisallowed.=$value;
6896: }
6897: } else {
6898: $thisallowed.=$value;
6899: }
6900: $checkreferer=0;
6901: }
6902: }
6903:
6904: if ($checkreferer) {
6905: my $refuri=$env{'httpref.'.$orguri};
6906: unless ($refuri) {
6907: foreach my $key (keys(%env)) {
6908: if ($key=~/^httpref\..*\*/) {
6909: my $pattern=$key;
6910: $pattern=~s/^httpref\.\/res\///;
6911: $pattern=~s/\*/\[\^\/\]\+/g;
6912: $pattern=~s/\//\\\//g;
6913: if ($orguri=~/$pattern/) {
6914: $refuri=$env{$key};
6915: }
6916: }
6917: }
6918: }
6919:
6920: if ($refuri) {
6921: $refuri=&declutter($refuri);
6922: my ($match,$cond)=&is_on_map($refuri);
6923: if ($match) {
6924: my $refstatecond=$cond;
6925: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6926: =~/\Q$priv\E\&([^\:]*)/) {
6927: my $value = $1;
6928: if ($priv eq 'bre') {
6929: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6930: if (@blockers > 0) {
6931: $thisallowed = 'B';
6932: } else {
6933: $thisallowed.=$value;
6934: }
6935: } else {
6936: $thisallowed.=$value;
6937: }
6938: $uri=$refuri;
6939: $statecond=$refstatecond;
6940: }
6941: }
6942: }
6943: }
6944: }
6945:
6946: #
6947: # Gathered now: all privileges that could apply, and condition number
6948: #
6949: #
6950: # Full or no access?
6951: #
6952:
6953: if ($thisallowed=~/F/) {
6954: return 'F';
6955: }
6956:
6957: unless ($thisallowed) {
6958: return '';
6959: }
6960:
6961: # Restrictions exist, deal with them
6962: #
6963: # C:according to course preferences
6964: # R:according to resource settings
6965: # L:unless locked
6966: # X:according to user session state
6967: #
6968:
6969: # Possibly locked functionality, check all courses
6970: # Locks might take effect only after 10 minutes cache expiration for other
6971: # courses, and 2 minutes for current course
6972:
6973: my $envkey;
6974: if ($thisallowed=~/L/) {
6975: foreach $envkey (keys(%env)) {
6976: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6977: my $courseid=$2;
6978: my $roleid=$1.'.'.$2;
6979: $courseid=~s/^\///;
6980: my $expiretime=600;
6981: if ($env{'request.role'} eq $roleid) {
6982: $expiretime=120;
6983: }
6984: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6985: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6986: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6987: &coursedescription($courseid,{'freshen_cache' => 1});
6988: }
6989: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6990: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6991: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6992: &log($env{'user.domain'},$env{'user.name'},
6993: $env{'user.home'},
6994: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6995: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6996: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6997: return '';
6998: }
6999: }
7000: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7001: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7002: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7003: &log($env{'user.domain'},$env{'user.name'},
7004: $env{'user.home'},
7005: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7006: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7007: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7008: return '';
7009: }
7010: }
7011: }
7012: }
7013: }
7014:
7015: #
7016: # Rest of the restrictions depend on selected course
7017: #
7018:
7019: unless ($env{'request.course.id'}) {
7020: if ($thisallowed eq 'A') {
7021: return 'A';
7022: } elsif ($thisallowed eq 'B') {
7023: return 'B';
7024: } else {
7025: return '1';
7026: }
7027: }
7028:
7029: #
7030: # Now user is definitely in a course
7031: #
7032:
7033:
7034: # Course preferences
7035:
7036: if ($thisallowed=~/C/) {
7037: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7038: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7039: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7040: =~/\Q$rolecode\E/) {
7041: if (($priv ne 'pch') && ($priv ne 'plc')) {
7042: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7043: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7044: $env{'request.course.id'});
7045: }
7046: return '';
7047: }
7048:
7049: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7050: =~/\Q$unamedom\E/) {
7051: if (($priv ne 'pch') && ($priv ne 'plc')) {
7052: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7053: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7054: $env{'request.course.id'});
7055: }
7056: return '';
7057: }
7058: }
7059:
7060: # Resource preferences
7061:
7062: if ($thisallowed=~/R/) {
7063: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7064: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7065: if (($priv ne 'pch') && ($priv ne 'plc')) {
7066: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7067: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7068: }
7069: return '';
7070: }
7071: }
7072:
7073: # Restricted by state or randomout?
7074:
7075: if ($thisallowed=~/X/) {
7076: if ($env{'acc.randomout'}) {
7077: if (!$symb) { $symb=&symbread($uri,1); }
7078: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7079: return '';
7080: }
7081: }
7082: if (&condval($statecond)) {
7083: return '2';
7084: } else {
7085: return '';
7086: }
7087: }
7088:
7089: if ($thisallowed eq 'A') {
7090: return 'A';
7091: } elsif ($thisallowed eq 'B') {
7092: return 'B';
7093: }
7094: return 'F';
7095: }
7096:
7097: # ------------------------------------------- Check construction space access
7098:
7099: sub constructaccess {
7100: my ($url,$setpriv)=@_;
7101:
7102: # We do not allow editing of previous versions of files
7103: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7104:
7105: # Get username and domain from URL
7106: my ($ownername,$ownerdomain,$ownerhome);
7107:
7108: ($ownerdomain,$ownername) =
7109: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
7110:
7111: # The URL does not really point to any authorspace, forget it
7112: unless (($ownername) && ($ownerdomain)) { return ''; }
7113:
7114: # Now we need to see if the user has access to the authorspace of
7115: # $ownername at $ownerdomain
7116:
7117: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7118: # Real author for this?
7119: $ownerhome = $env{'user.home'};
7120: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7121: return ($ownername,$ownerdomain,$ownerhome);
7122: }
7123: } else {
7124: # Co-author for this?
7125: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7126: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7127: $ownerhome = &homeserver($ownername,$ownerdomain);
7128: return ($ownername,$ownerdomain,$ownerhome);
7129: }
7130: }
7131:
7132: # We don't have any access right now. If we are not possibly going to do anything about this,
7133: # we might as well leave
7134: unless ($setpriv) { return ''; }
7135:
7136: # Backdoor access?
7137: my $allowed=&allowed('eco',$ownerdomain);
7138: # Nope
7139: unless ($allowed) { return ''; }
7140: # Looks like we may have access, but could be locked by the owner of the construction space
7141: if ($allowed eq 'U') {
7142: my %blocked=&get('environment',['domcoord.author'],
7143: $ownerdomain,$ownername);
7144: # Is blocked by owner
7145: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7146: }
7147: if (($allowed eq 'F') || ($allowed eq 'U')) {
7148: # Grant temporary access
7149: my $then=$env{'user.login.time'};
7150: my $update=$env{'user.update.time'};
7151: if (!$update) { $update = $then; }
7152: my $refresh=$env{'user.refresh.time'};
7153: if (!$refresh) { $refresh = $update; }
7154: my $now = time;
7155: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7156: $now,'ca','constructaccess');
7157: $ownerhome = &homeserver($ownername,$ownerdomain);
7158: return($ownername,$ownerdomain,$ownerhome);
7159: }
7160: # No business here
7161: return '';
7162: }
7163:
7164: sub get_comm_blocks {
7165: my ($cdom,$cnum) = @_;
7166: if ($cdom eq '' || $cnum eq '') {
7167: return unless ($env{'request.course.id'});
7168: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7169: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7170: }
7171: my %commblocks;
7172: my $hashid=$cdom.'_'.$cnum;
7173: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7174: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7175: %commblocks = %{$blocksref};
7176: } else {
7177: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7178: my $cachetime = 600;
7179: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7180: }
7181: return %commblocks;
7182: }
7183:
7184: sub has_comm_blocking {
7185: my ($priv,$symb,$uri,$blocks) = @_;
7186: return unless ($env{'request.course.id'});
7187: return unless ($priv eq 'bre');
7188: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7189: my %commblocks;
7190: if (ref($blocks) eq 'HASH') {
7191: %commblocks = %{$blocks};
7192: } else {
7193: %commblocks = &get_comm_blocks();
7194: }
7195: return unless (keys(%commblocks) > 0);
7196: if (!$symb) { $symb=&symbread($uri,1); }
7197: my ($map,$resid,undef)=&decode_symb($symb);
7198: my %tocheck = (
7199: maps => $map,
7200: resources => $symb,
7201: );
7202: my @blockers;
7203: my $now = time;
7204: my $navmap = Apache::lonnavmaps::navmap->new();
7205: foreach my $block (keys(%commblocks)) {
7206: if ($block =~ /^(\d+)____(\d+)$/) {
7207: my ($start,$end) = ($1,$2);
7208: if ($start <= $now && $end >= $now) {
7209: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7210: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7211: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7212: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
7213: unless (grep(/^\Q$block\E$/,@blockers)) {
7214: push(@blockers,$block);
7215: }
7216: }
7217: }
7218: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7219: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
7220: unless (grep(/^\Q$block\E$/,@blockers)) {
7221: push(@blockers,$block);
7222: }
7223: }
7224: }
7225: }
7226: }
7227: }
7228: } elsif ($block =~ /^firstaccess____(.+)$/) {
7229: my $item = $1;
7230: my @to_test;
7231: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7232: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7233: my $check_interval;
7234: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
7235: my @interval;
7236: my $type = 'map';
7237: if ($item eq 'course') {
7238: $type = 'course';
7239: @interval=&EXT("resource.0.interval");
7240: } else {
7241: if ($item =~ /___\d+___/) {
7242: $type = 'resource';
7243: @interval=&EXT("resource.0.interval",$item);
7244: if (ref($navmap)) {
7245: my $res = $navmap->getBySymb($item);
7246: push(@to_test,$res);
7247: }
7248: } else {
7249: my $mapsymb = &symbread($item,1);
7250: if ($mapsymb) {
7251: if (ref($navmap)) {
7252: my $mapres = $navmap->getBySymb($mapsymb);
7253: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
7254: foreach my $res (@to_test) {
7255: my $symb = $res->symb();
7256: next if ($symb eq $mapsymb);
7257: if ($symb ne '') {
7258: @interval=&EXT("resource.0.interval",$symb);
7259: last;
7260: }
7261: }
7262: }
7263: }
7264: }
7265: }
7266: if ($interval[0] =~ /\d+/) {
7267: my $first_access;
7268: if ($type eq 'resource') {
7269: $first_access=&get_first_access($interval[1],$item);
7270: } elsif ($type eq 'map') {
7271: $first_access=&get_first_access($interval[1],undef,$item);
7272: } else {
7273: $first_access=&get_first_access($interval[1]);
7274: }
7275: if ($first_access) {
7276: my $timesup = $first_access+$interval[0];
7277: if ($timesup > $now) {
7278: foreach my $res (@to_test) {
7279: if ($res->is_problem()) {
7280: if ($res->completable()) {
7281: unless (grep(/^\Q$block\E$/,@blockers)) {
7282: push(@blockers,$block);
7283: }
7284: last;
7285: }
7286: }
7287: }
7288: }
7289: }
7290: }
7291: }
7292: }
7293: }
7294: }
7295: }
7296: return @blockers;
7297: }
7298:
7299: sub check_docs_block {
7300: my ($docsblock,$tocheck) =@_;
7301: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7302: return;
7303: }
7304: if (ref($docsblock->{'maps'}) eq 'HASH') {
7305: if ($tocheck->{'maps'}) {
7306: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7307: return 1;
7308: }
7309: }
7310: }
7311: if (ref($docsblock->{'resources'}) eq 'HASH') {
7312: if ($tocheck->{'resources'}) {
7313: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7314: return 1;
7315: }
7316: }
7317: }
7318: return;
7319: }
7320:
7321: #
7322: # Removes the versino from a URI and
7323: # splits it in to its filename and path to the filename.
7324: # Seems like File::Basename could have done this more clearly.
7325: # Parameters:
7326: # $uri - input URI
7327: # Returns:
7328: # Two element list consisting of
7329: # $pathname - the URI up to and excluding the trailing /
7330: # $filename - The part of the URI following the last /
7331: # NOTE:
7332: # Another realization of this is simply:
7333: # use File::Basename;
7334: # ...
7335: # $uri = shift;
7336: # $filename = basename($uri);
7337: # $path = dirname($uri);
7338: # return ($filename, $path);
7339: #
7340: # The implementation below is probably faster however.
7341: #
7342: sub split_uri_for_cond {
7343: my $uri=&deversion(&declutter(shift));
7344: my @uriparts=split(/\//,$uri);
7345: my $filename=pop(@uriparts);
7346: my $pathname=join('/',@uriparts);
7347: return ($pathname,$filename);
7348: }
7349: # --------------------------------------------------- Is a resource on the map?
7350:
7351: sub is_on_map {
7352: my ($pathname,$filename) = &split_uri_for_cond(shift);
7353: #Trying to find the conditional for the file
7354: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7355: /\&\Q$filename\E\:([\d\|]+)\&/);
7356: if ($match) {
7357: return (1,$1);
7358: } else {
7359: return (0,0);
7360: }
7361: }
7362:
7363: # --------------------------------------------------------- Get symb from alias
7364:
7365: sub get_symb_from_alias {
7366: my $symb=shift;
7367: my ($map,$resid,$url)=&decode_symb($symb);
7368: # Already is a symb
7369: if ($url) { return $symb; }
7370: # Must be an alias
7371: my $aliassymb='';
7372: my %bighash;
7373: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7374: &GDBM_READER(),0640)) {
7375: my $rid=$bighash{'mapalias_'.$symb};
7376: if ($rid) {
7377: my ($mapid,$resid)=split(/\./,$rid);
7378: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7379: $resid,$bighash{'src_'.$rid});
7380: }
7381: untie %bighash;
7382: }
7383: return $aliassymb;
7384: }
7385:
7386: # ----------------------------------------------------------------- Define Role
7387:
7388: sub definerole {
7389: if (allowed('mcr','/')) {
7390: my ($rolename,$sysrole,$domrole,$courole)=@_;
7391: foreach my $role (split(':',$sysrole)) {
7392: my ($crole,$cqual)=split(/\&/,$role);
7393: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7394: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7395: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7396: return "refused:s:$crole&$cqual";
7397: }
7398: }
7399: }
7400: foreach my $role (split(':',$domrole)) {
7401: my ($crole,$cqual)=split(/\&/,$role);
7402: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7403: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7404: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7405: return "refused:d:$crole&$cqual";
7406: }
7407: }
7408: }
7409: foreach my $role (split(':',$courole)) {
7410: my ($crole,$cqual)=split(/\&/,$role);
7411: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7412: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7413: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7414: return "refused:c:$crole&$cqual";
7415: }
7416: }
7417: }
7418: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7419: "$env{'user.domain'}:$env{'user.name'}:".
7420: "rolesdef_$rolename=".
7421: escape($sysrole.'_'.$domrole.'_'.$courole);
7422: return reply($command,$env{'user.home'});
7423: } else {
7424: return 'refused';
7425: }
7426: }
7427:
7428: # ---------------- Make a metadata query against the network of library servers
7429:
7430: sub metadata_query {
7431: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
7432: my %rhash;
7433: my %libserv = &all_library();
7434: my @server_list = (defined($server_array) ? @$server_array
7435: : keys(%libserv) );
7436: for my $server (@server_list) {
7437: my $domains = '';
7438: if (ref($domains_hash) eq 'HASH') {
7439: $domains = $domains_hash->{$server};
7440: }
7441: unless ($custom or $customshow) {
7442: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
7443: $rhash{$server}=$reply;
7444: }
7445: else {
7446: my $reply=&reply("querysend:".&escape($query).':'.
7447: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
7448: $server);
7449: $rhash{$server}=$reply;
7450: }
7451: }
7452: return \%rhash;
7453: }
7454:
7455: # ----------------------------------------- Send log queries and wait for reply
7456:
7457: sub log_query {
7458: my ($uname,$udom,$query,%filters)=@_;
7459: my $uhome=&homeserver($uname,$udom);
7460: if ($uhome eq 'no_host') { return 'error: no_host'; }
7461: my $uhost=&hostname($uhome);
7462: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7463: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7464: $uhome);
7465: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7466: return get_query_reply($queryid);
7467: }
7468:
7469: # -------------------------- Update MySQL table for portfolio file
7470:
7471: sub update_portfolio_table {
7472: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7473: if ($group ne '') {
7474: $file_name =~s /^\Q$group\E//;
7475: }
7476: my $homeserver = &homeserver($uname,$udom);
7477: my $queryid=
7478: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7479: ':'.&escape($file_name).':'.$action,$homeserver);
7480: my $reply = &get_query_reply($queryid);
7481: return $reply;
7482: }
7483:
7484: # -------------------------- Update MySQL allusers table
7485:
7486: sub update_allusers_table {
7487: my ($uname,$udom,$names) = @_;
7488: my $homeserver = &homeserver($uname,$udom);
7489: my $queryid=
7490: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7491: 'lastname='.&escape($names->{'lastname'}).'%%'.
7492: 'firstname='.&escape($names->{'firstname'}).'%%'.
7493: 'middlename='.&escape($names->{'middlename'}).'%%'.
7494: 'generation='.&escape($names->{'generation'}).'%%'.
7495: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7496: 'id='.&escape($names->{'id'}),$homeserver);
7497: return;
7498: }
7499:
7500: # ------- Request retrieval of institutional classlists for course(s)
7501:
7502: sub fetch_enrollment_query {
7503: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7504: my $homeserver;
7505: my $maxtries = 1;
7506: if ($context eq 'automated') {
7507: $homeserver = $perlvar{'lonHostID'};
7508: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7509: } else {
7510: $homeserver = &homeserver($cnum,$dom);
7511: }
7512: my $host=&hostname($homeserver);
7513: my $cmd = '';
7514: foreach my $affiliate (keys(%{$affiliatesref})) {
7515: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7516: }
7517: $cmd =~ s/%%$//;
7518: $cmd = &escape($cmd);
7519: my $query = 'fetchenrollment';
7520: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7521: unless ($queryid=~/^\Q$host\E\_/) {
7522: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7523: return 'error: '.$queryid;
7524: }
7525: my $reply = &get_query_reply($queryid);
7526: my $tries = 1;
7527: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7528: $reply = &get_query_reply($queryid);
7529: $tries ++;
7530: }
7531: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7532: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7533: } else {
7534: my @responses = split(/:/,$reply);
7535: if ($homeserver eq $perlvar{'lonHostID'}) {
7536: foreach my $line (@responses) {
7537: my ($key,$value) = split(/=/,$line,2);
7538: $$replyref{$key} = $value;
7539: }
7540: } else {
7541: my $pathname = LONCAPA::tempdir();
7542: foreach my $line (@responses) {
7543: my ($key,$value) = split(/=/,$line);
7544: $$replyref{$key} = $value;
7545: if ($value > 0) {
7546: foreach my $item (@{$$affiliatesref{$key}}) {
7547: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7548: my $destname = $pathname.'/'.$filename;
7549: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7550: if ($xml_classlist =~ /^error/) {
7551: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7552: } else {
7553: if ( open(FILE,">$destname") ) {
7554: print FILE &unescape($xml_classlist);
7555: close(FILE);
7556: } else {
7557: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7558: }
7559: }
7560: }
7561: }
7562: }
7563: }
7564: return 'ok';
7565: }
7566: return 'error';
7567: }
7568:
7569: sub get_query_reply {
7570: my $queryid=shift;
7571: my $replyfile=LONCAPA::tempdir().$queryid;
7572: my $reply='';
7573: for (1..100) {
7574: sleep 2;
7575: if (-e $replyfile.'.end') {
7576: if (open(my $fh,$replyfile)) {
7577: $reply = join('',<$fh>);
7578: close($fh);
7579: } else { return 'error: reply_file_error'; }
7580: return &unescape($reply);
7581: }
7582: }
7583: return 'timeout:'.$queryid;
7584: }
7585:
7586: sub courselog_query {
7587: #
7588: # possible filters:
7589: # url: url or symb
7590: # username
7591: # domain
7592: # action: view, submit, grade
7593: # start: timestamp
7594: # end: timestamp
7595: #
7596: my (%filters)=@_;
7597: unless ($env{'request.course.id'}) { return 'no_course'; }
7598: if ($filters{'url'}) {
7599: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7600: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7601: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7602: }
7603: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7604: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7605: return &log_query($cname,$cdom,'courselog',%filters);
7606: }
7607:
7608: sub userlog_query {
7609: #
7610: # possible filters:
7611: # action: log check role
7612: # start: timestamp
7613: # end: timestamp
7614: #
7615: my ($uname,$udom,%filters)=@_;
7616: return &log_query($uname,$udom,'userlog',%filters);
7617: }
7618:
7619: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7620:
7621: sub auto_run {
7622: my ($cnum,$cdom) = @_;
7623: my $response = 0;
7624: my $settings;
7625: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7626: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7627: $settings = $domconfig{'autoenroll'};
7628: if ($settings->{'run'} eq '1') {
7629: $response = 1;
7630: }
7631: } else {
7632: my $homeserver;
7633: if (&is_course($cdom,$cnum)) {
7634: $homeserver = &homeserver($cnum,$cdom);
7635: } else {
7636: $homeserver = &domain($cdom,'primary');
7637: }
7638: if ($homeserver ne 'no_host') {
7639: $response = &reply('autorun:'.$cdom,$homeserver);
7640: }
7641: }
7642: return $response;
7643: }
7644:
7645: sub auto_get_sections {
7646: my ($cnum,$cdom,$inst_coursecode) = @_;
7647: my $homeserver;
7648: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7649: $homeserver = &homeserver($cnum,$cdom);
7650: }
7651: if (!defined($homeserver)) {
7652: if ($cdom =~ /^$match_domain$/) {
7653: $homeserver = &domain($cdom,'primary');
7654: }
7655: }
7656: my @secs;
7657: if (defined($homeserver)) {
7658: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7659: unless ($response eq 'refused') {
7660: @secs = split(/:/,$response);
7661: }
7662: }
7663: return @secs;
7664: }
7665:
7666: sub auto_new_course {
7667: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7668: my $homeserver = &homeserver($cnum,$cdom);
7669: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7670: return $response;
7671: }
7672:
7673: sub auto_validate_courseID {
7674: my ($cnum,$cdom,$inst_course_id) = @_;
7675: my $homeserver = &homeserver($cnum,$cdom);
7676: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7677: return $response;
7678: }
7679:
7680: sub auto_validate_instcode {
7681: my ($cnum,$cdom,$instcode,$owner) = @_;
7682: my ($homeserver,$response);
7683: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7684: $homeserver = &homeserver($cnum,$cdom);
7685: }
7686: if (!defined($homeserver)) {
7687: if ($cdom =~ /^$match_domain$/) {
7688: $homeserver = &domain($cdom,'primary');
7689: }
7690: }
7691: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7692: &escape($instcode).':'.&escape($owner),$homeserver));
7693: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7694: return ($outcome,$description,$defaultcredits);
7695: }
7696:
7697: sub auto_create_password {
7698: my ($cnum,$cdom,$authparam,$udom) = @_;
7699: my ($homeserver,$response);
7700: my $create_passwd = 0;
7701: my $authchk = '';
7702: if ($udom =~ /^$match_domain$/) {
7703: $homeserver = &domain($udom,'primary');
7704: }
7705: if ($homeserver eq '') {
7706: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7707: $homeserver = &homeserver($cnum,$cdom);
7708: }
7709: }
7710: if ($homeserver eq '') {
7711: $authchk = 'nodomain';
7712: } else {
7713: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7714: if ($response eq 'refused') {
7715: $authchk = 'refused';
7716: } else {
7717: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7718: }
7719: }
7720: return ($authparam,$create_passwd,$authchk);
7721: }
7722:
7723: sub auto_photo_permission {
7724: my ($cnum,$cdom,$students) = @_;
7725: my $homeserver = &homeserver($cnum,$cdom);
7726: my ($outcome,$perm_reqd,$conditions) =
7727: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7728: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7729: return (undef,undef);
7730: }
7731: return ($outcome,$perm_reqd,$conditions);
7732: }
7733:
7734: sub auto_checkphotos {
7735: my ($uname,$udom,$pid) = @_;
7736: my $homeserver = &homeserver($uname,$udom);
7737: my ($result,$resulttype);
7738: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7739: &escape($uname).':'.&escape($pid),
7740: $homeserver));
7741: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7742: return (undef,undef);
7743: }
7744: if ($outcome) {
7745: ($result,$resulttype) = split(/:/,$outcome);
7746: }
7747: return ($result,$resulttype);
7748: }
7749:
7750: sub auto_photochoice {
7751: my ($cnum,$cdom) = @_;
7752: my $homeserver = &homeserver($cnum,$cdom);
7753: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7754: &escape($cdom),
7755: $homeserver)));
7756: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7757: return (undef,undef);
7758: }
7759: return ($update,$comment);
7760: }
7761:
7762: sub auto_photoupdate {
7763: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7764: my $homeserver = &homeserver($cnum,$dom);
7765: my $host=&hostname($homeserver);
7766: my $cmd = '';
7767: my $maxtries = 1;
7768: foreach my $affiliate (keys(%{$affiliatesref})) {
7769: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7770: }
7771: $cmd =~ s/%%$//;
7772: $cmd = &escape($cmd);
7773: my $query = 'institutionalphotos';
7774: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7775: unless ($queryid=~/^\Q$host\E\_/) {
7776: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7777: return 'error: '.$queryid;
7778: }
7779: my $reply = &get_query_reply($queryid);
7780: my $tries = 1;
7781: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7782: $reply = &get_query_reply($queryid);
7783: $tries ++;
7784: }
7785: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7786: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7787: } else {
7788: my @responses = split(/:/,$reply);
7789: my $outcome = shift(@responses);
7790: foreach my $item (@responses) {
7791: my ($key,$value) = split(/=/,$item);
7792: $$photo{$key} = $value;
7793: }
7794: return $outcome;
7795: }
7796: return 'error';
7797: }
7798:
7799: sub auto_instcode_format {
7800: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7801: $cat_order) = @_;
7802: my $courses = '';
7803: my @homeservers;
7804: if ($caller eq 'global') {
7805: my %servers = &get_servers($codedom,'library');
7806: foreach my $tryserver (keys(%servers)) {
7807: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7808: push(@homeservers,$tryserver);
7809: }
7810: }
7811: } elsif ($caller eq 'requests') {
7812: if ($codedom =~ /^$match_domain$/) {
7813: my $chome = &domain($codedom,'primary');
7814: unless ($chome eq 'no_host') {
7815: push(@homeservers,$chome);
7816: }
7817: }
7818: } else {
7819: push(@homeservers,&homeserver($caller,$codedom));
7820: }
7821: foreach my $code (keys(%{$instcodes})) {
7822: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7823: }
7824: chop($courses);
7825: my $ok_response = 0;
7826: my $response;
7827: while (@homeservers > 0 && $ok_response == 0) {
7828: my $server = shift(@homeservers);
7829: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7830: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7831: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7832: split(/:/,$response);
7833: %{$codes} = (%{$codes},&str2hash($codes_str));
7834: push(@{$codetitles},&str2array($codetitles_str));
7835: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7836: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7837: $ok_response = 1;
7838: }
7839: }
7840: if ($ok_response) {
7841: return 'ok';
7842: } else {
7843: return $response;
7844: }
7845: }
7846:
7847: sub auto_instcode_defaults {
7848: my ($domain,$returnhash,$code_order) = @_;
7849: my @homeservers;
7850:
7851: my %servers = &get_servers($domain,'library');
7852: foreach my $tryserver (keys(%servers)) {
7853: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7854: push(@homeservers,$tryserver);
7855: }
7856: }
7857:
7858: my $response;
7859: foreach my $server (@homeservers) {
7860: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7861: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7862:
7863: foreach my $pair (split(/\&/,$response)) {
7864: my ($name,$value)=split(/\=/,$pair);
7865: if ($name eq 'code_order') {
7866: @{$code_order} = split(/\&/,&unescape($value));
7867: } else {
7868: $returnhash->{&unescape($name)}=&unescape($value);
7869: }
7870: }
7871: return 'ok';
7872: }
7873:
7874: return $response;
7875: }
7876:
7877: sub auto_possible_instcodes {
7878: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7879: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7880: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7881: return;
7882: }
7883: my (@homeservers,$uhome);
7884: if (defined(&domain($domain,'primary'))) {
7885: $uhome=&domain($domain,'primary');
7886: push(@homeservers,&domain($domain,'primary'));
7887: } else {
7888: my %servers = &get_servers($domain,'library');
7889: foreach my $tryserver (keys(%servers)) {
7890: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7891: push(@homeservers,$tryserver);
7892: }
7893: }
7894: }
7895: my $response;
7896: foreach my $server (@homeservers) {
7897: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7898: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7899: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7900: split(':',$response);
7901: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7902: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7903: foreach my $item (split('&',$cat_title)) {
7904: my ($name,$value)=split('=',$item);
7905: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7906: }
7907: foreach my $item (split('&',$cat_order)) {
7908: my ($name,$value)=split('=',$item);
7909: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7910: }
7911: return 'ok';
7912: }
7913: return $response;
7914: }
7915:
7916: sub auto_courserequest_checks {
7917: my ($dom) = @_;
7918: my ($homeserver,%validations);
7919: if ($dom =~ /^$match_domain$/) {
7920: $homeserver = &domain($dom,'primary');
7921: }
7922: unless ($homeserver eq 'no_host') {
7923: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7924: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7925: my @items = split(/&/,$response);
7926: foreach my $item (@items) {
7927: my ($key,$value) = split('=',$item);
7928: $validations{&unescape($key)} = &thaw_unescape($value);
7929: }
7930: }
7931: }
7932: return %validations;
7933: }
7934:
7935: sub auto_courserequest_validation {
7936: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
7937: my ($homeserver,$response);
7938: if ($dom =~ /^$match_domain$/) {
7939: $homeserver = &domain($dom,'primary');
7940: }
7941: unless ($homeserver eq 'no_host') {
7942: my $customdata;
7943: if (ref($custominfo) eq 'HASH') {
7944: $customdata = &freeze_escape($custominfo);
7945: }
7946: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7947: ':'.&escape($crstype).':'.&escape($inststatuslist).
7948: ':'.&escape($instcode).':'.&escape($instseclist).':'.
7949: $customdata,$homeserver));
7950: }
7951: return $response;
7952: }
7953:
7954: sub auto_validate_class_sec {
7955: my ($cdom,$cnum,$owners,$inst_class) = @_;
7956: my $homeserver = &homeserver($cnum,$cdom);
7957: my $ownerlist;
7958: if (ref($owners) eq 'ARRAY') {
7959: $ownerlist = join(',',@{$owners});
7960: } else {
7961: $ownerlist = $owners;
7962: }
7963: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7964: &escape($ownerlist).':'.$cdom,$homeserver);
7965: return $response;
7966: }
7967:
7968: sub auto_crsreq_update {
7969: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
7970: $code,$accessstart,$accessend,$inbound) = @_;
7971: my ($homeserver,%crsreqresponse);
7972: if ($cdom =~ /^$match_domain$/) {
7973: $homeserver = &domain($cdom,'primary');
7974: }
7975: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
7976: my $info;
7977: if (ref($inbound) eq 'HASH') {
7978: $info = &freeze_escape($inbound);
7979: }
7980: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
7981: ':'.&escape($action).':'.&escape($ownername).':'.
7982: &escape($ownerdomain).':'.&escape($fullname).':'.
7983: &escape($title).':'.&escape($code).':'.
7984: &escape($accessstart).':'.&escape($accessend).':'.$info,
7985: $homeserver);
7986: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7987: my @items = split(/&/,$response);
7988: foreach my $item (@items) {
7989: my ($key,$value) = split('=',$item);
7990: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
7991: }
7992: }
7993: }
7994: return \%crsreqresponse;
7995: }
7996:
7997: # ------------------------------------------------------- Course Group routines
7998:
7999: sub get_coursegroups {
8000: my ($cdom,$cnum,$group,$namespace) = @_;
8001: return(&dump($namespace,$cdom,$cnum,$group));
8002: }
8003:
8004: sub modify_coursegroup {
8005: my ($cdom,$cnum,$groupsettings) = @_;
8006: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
8007: }
8008:
8009: sub toggle_coursegroup_status {
8010: my ($cdom,$cnum,$group,$action) = @_;
8011: my ($from_namespace,$to_namespace);
8012: if ($action eq 'delete') {
8013: $from_namespace = 'coursegroups';
8014: $to_namespace = 'deleted_groups';
8015: } else {
8016: $from_namespace = 'deleted_groups';
8017: $to_namespace = 'coursegroups';
8018: }
8019: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8020: if (my $tmp = &error(%curr_group)) {
8021: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8022: return ('read error',$tmp);
8023: } else {
8024: my %savedsettings = %curr_group;
8025: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8026: my $deloutcome;
8027: if ($result eq 'ok') {
8028: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8029: } else {
8030: return ('write error',$result);
8031: }
8032: if ($deloutcome eq 'ok') {
8033: return 'ok';
8034: } else {
8035: return ('delete error',$deloutcome);
8036: }
8037: }
8038: }
8039:
8040: sub modify_group_roles {
8041: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8042: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8043: my $role = 'gr/'.&escape($userprivs);
8044: my ($uname,$udom) = split(/:/,$user);
8045: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8046: if ($result eq 'ok') {
8047: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8048: }
8049: return $result;
8050: }
8051:
8052: sub modify_coursegroup_membership {
8053: my ($cdom,$cnum,$membership) = @_;
8054: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8055: return $result;
8056: }
8057:
8058: sub get_active_groups {
8059: my ($udom,$uname,$cdom,$cnum) = @_;
8060: my $now = time;
8061: my %groups = ();
8062: foreach my $key (keys(%env)) {
8063: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8064: my ($start,$end) = split(/\./,$env{$key});
8065: if (($end!=0) && ($end<$now)) { next; }
8066: if (($start!=0) && ($start>$now)) { next; }
8067: if ($1 eq $cdom && $2 eq $cnum) {
8068: $groups{$3} = $env{$key} ;
8069: }
8070: }
8071: }
8072: return %groups;
8073: }
8074:
8075: sub get_group_membership {
8076: my ($cdom,$cnum,$group) = @_;
8077: return(&dump('groupmembership',$cdom,$cnum,$group));
8078: }
8079:
8080: sub get_users_groups {
8081: my ($udom,$uname,$courseid) = @_;
8082: my @usersgroups;
8083: my $cachetime=1800;
8084:
8085: my $hashid="$udom:$uname:$courseid";
8086: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
8087: if (defined($cached)) {
8088: @usersgroups = split(/:/,$grouplist);
8089: } else {
8090: $grouplist = '';
8091: my $courseurl = &courseid_to_courseurl($courseid);
8092: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
8093: my $access_end = $env{'course.'.$courseid.
8094: '.default_enrollment_end_date'};
8095: my $now = time;
8096: foreach my $key (keys(%roleshash)) {
8097: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
8098: my $group = $1;
8099: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
8100: my $start = $2;
8101: my $end = $1;
8102: if ($start == -1) { next; } # deleted from group
8103: if (($start!=0) && ($start>$now)) { next; }
8104: if (($end!=0) && ($end<$now)) {
8105: if ($access_end && $access_end < $now) {
8106: if ($access_end - $end < 86400) {
8107: push(@usersgroups,$group);
8108: }
8109: }
8110: next;
8111: }
8112: push(@usersgroups,$group);
8113: }
8114: }
8115: }
8116: @usersgroups = &sort_course_groups($courseid,@usersgroups);
8117: $grouplist = join(':',@usersgroups);
8118: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
8119: }
8120: return @usersgroups;
8121: }
8122:
8123: sub devalidate_getgroups_cache {
8124: my ($udom,$uname,$cdom,$cnum)=@_;
8125: my $courseid = $cdom.'_'.$cnum;
8126:
8127: my $hashid="$udom:$uname:$courseid";
8128: &devalidate_cache_new('getgroups',$hashid);
8129: }
8130:
8131: # ------------------------------------------------------------------ Plain Text
8132:
8133: sub plaintext {
8134: my ($short,$type,$cid,$forcedefault) = @_;
8135: if ($short =~ m{^cr/}) {
8136: return (split('/',$short))[-1];
8137: }
8138: if (!defined($cid)) {
8139: $cid = $env{'request.course.id'};
8140: }
8141: my %rolenames = (
8142: Course => 'std',
8143: Community => 'alt1',
8144: );
8145: if ($cid ne '') {
8146: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
8147: unless ($forcedefault) {
8148: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
8149: &Apache::lonlocal::mt_escape(\$roletext);
8150: return &Apache::lonlocal::mt($roletext);
8151: }
8152: }
8153: }
8154: if ((defined($type)) && (defined($rolenames{$type})) &&
8155: (defined($rolenames{$type})) &&
8156: (defined($prp{$short}{$rolenames{$type}}))) {
8157: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
8158: } elsif ($cid ne '') {
8159: my $crstype = $env{'course.'.$cid.'.type'};
8160: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
8161: (defined($prp{$short}{$rolenames{$crstype}}))) {
8162: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
8163: }
8164: }
8165: return &Apache::lonlocal::mt($prp{$short}{'std'});
8166: }
8167:
8168: # ----------------------------------------------------------------- Assign Role
8169:
8170: sub assignrole {
8171: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8172: $context)=@_;
8173: my $mrole;
8174: if ($role =~ /^cr\//) {
8175: my $cwosec=$url;
8176: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8177: unless (&allowed('ccr',$cwosec)) {
8178: my $refused = 1;
8179: if ($context eq 'requestcourses') {
8180: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8181: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8182: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8183: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8184: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8185: if ($crsenv{'internal.courseowner'} eq
8186: $env{'user.name'}.':'.$env{'user.domain'}) {
8187: $refused = '';
8188: }
8189: }
8190: }
8191: }
8192: }
8193: if ($refused) {
8194: &logthis('Refused custom assignrole: '.
8195: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8196: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8197: return 'refused';
8198: }
8199: }
8200: $mrole='cr';
8201: } elsif ($role =~ /^gr\//) {
8202: my $cwogrp=$url;
8203: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8204: unless (&allowed('mdg',$cwogrp)) {
8205: &logthis('Refused group assignrole: '.
8206: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8207: $env{'user.name'}.' at '.$env{'user.domain'});
8208: return 'refused';
8209: }
8210: $mrole='gr';
8211: } else {
8212: my $cwosec=$url;
8213: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8214: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8215: my $refused;
8216: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8217: if (!(&allowed('c'.$role,$url))) {
8218: $refused = 1;
8219: }
8220: } else {
8221: $refused = 1;
8222: }
8223: if ($refused) {
8224: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8225: if (!$selfenroll && $context eq 'course') {
8226: my %crsenv;
8227: if ($role eq 'cc' || $role eq 'co') {
8228: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8229: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8230: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8231: if ($crsenv{'internal.courseowner'} eq
8232: $env{'user.name'}.':'.$env{'user.domain'}) {
8233: $refused = '';
8234: }
8235: }
8236: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8237: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8238: if ($crsenv{'internal.courseowner'} eq
8239: $env{'user.name'}.':'.$env{'user.domain'}) {
8240: $refused = '';
8241: }
8242: }
8243: }
8244: }
8245: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8246: $refused = '';
8247: } elsif ($context eq 'requestcourses') {
8248: my @possroles = ('st','ta','ep','in','cc','co');
8249: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8250: my $wrongcc;
8251: if ($cnum =~ /^$match_community$/) {
8252: $wrongcc = 1 if ($role eq 'cc');
8253: } else {
8254: $wrongcc = 1 if ($role eq 'co');
8255: }
8256: unless ($wrongcc) {
8257: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8258: if ($crsenv{'internal.courseowner'} eq
8259: $env{'user.name'}.':'.$env{'user.domain'}) {
8260: $refused = '';
8261: }
8262: }
8263: }
8264: } elsif ($context eq 'requestauthor') {
8265: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8266: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8267: if ($env{'environment.requestauthor'} eq 'automatic') {
8268: $refused = '';
8269: } else {
8270: my %domdefaults = &get_domain_defaults($udom);
8271: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8272: my $checkbystatus;
8273: if ($env{'user.adv'}) {
8274: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8275: if ($disposition eq 'automatic') {
8276: $refused = '';
8277: } elsif ($disposition eq '') {
8278: $checkbystatus = 1;
8279: }
8280: } else {
8281: $checkbystatus = 1;
8282: }
8283: if ($checkbystatus) {
8284: if ($env{'environment.inststatus'}) {
8285: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8286: foreach my $type (@inststatuses) {
8287: if (($type ne '') &&
8288: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8289: $refused = '';
8290: }
8291: }
8292: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8293: $refused = '';
8294: }
8295: }
8296: }
8297: }
8298: }
8299: }
8300: if ($refused) {
8301: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8302: ' '.$role.' '.$end.' '.$start.' by '.
8303: $env{'user.name'}.' at '.$env{'user.domain'});
8304: return 'refused';
8305: }
8306: }
8307: } elsif ($role eq 'au') {
8308: if ($url ne '/'.$udom.'/') {
8309: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8310: ' to assign author role for '.$uname.':'.$udom.
8311: ' in domain: '.$url.' refused (wrong domain).');
8312: return 'refused';
8313: }
8314: }
8315: $mrole=$role;
8316: }
8317: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8318: "$udom:$uname:$url".'_'."$mrole=$role";
8319: if ($end) { $command.='_'.$end; }
8320: if ($start) {
8321: if ($end) {
8322: $command.='_'.$start;
8323: } else {
8324: $command.='_0_'.$start;
8325: }
8326: }
8327: my $origstart = $start;
8328: my $origend = $end;
8329: my $delflag;
8330: # actually delete
8331: if ($deleteflag) {
8332: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8333: # modify command to delete the role
8334: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8335: "$udom:$uname:$url".'_'."$mrole";
8336: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8337: # set start and finish to negative values for userrolelog
8338: $start=-1;
8339: $end=-1;
8340: $delflag = 1;
8341: }
8342: }
8343: # send command
8344: my $answer=&reply($command,&homeserver($uname,$udom));
8345: # log new user role if status is ok
8346: if ($answer eq 'ok') {
8347: &userrolelog($role,$uname,$udom,$url,$start,$end);
8348: if (($role eq 'cc') || ($role eq 'in') ||
8349: ($role eq 'ep') || ($role eq 'ad') ||
8350: ($role eq 'ta') || ($role eq 'st') ||
8351: ($role=~/^cr/) || ($role eq 'gr') ||
8352: ($role eq 'co')) {
8353: # for course roles, perform group memberships changes triggered by role change.
8354: unless ($role =~ /^gr/) {
8355: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8356: $origstart,$selfenroll,$context);
8357: }
8358: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8359: $selfenroll,$context);
8360: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8361: ($role eq 'au') || ($role eq 'dc')) {
8362: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8363: $context);
8364: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8365: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8366: $context);
8367: }
8368: if ($role eq 'cc') {
8369: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8370: }
8371: }
8372: return $answer;
8373: }
8374:
8375: sub autoupdate_coowners {
8376: my ($url,$end,$start,$uname,$udom) = @_;
8377: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8378: if (($cdom ne '') && ($cnum ne '')) {
8379: my $now = time;
8380: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8381: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8382: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8383: my $instcode = $coursehash{'internal.coursecode'};
8384: if ($instcode ne '') {
8385: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8386: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8387: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8388: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8389: if ($result eq 'valid') {
8390: if ($coursehash{'internal.co-owners'}) {
8391: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8392: push(@newcoowners,$coowner);
8393: }
8394: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8395: push(@newcoowners,$uname.':'.$udom);
8396: }
8397: @newcoowners = sort(@newcoowners);
8398: } else {
8399: push(@newcoowners,$uname.':'.$udom);
8400: }
8401: } else {
8402: if ($coursehash{'internal.co-owners'}) {
8403: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8404: unless ($coowner eq $uname.':'.$udom) {
8405: push(@newcoowners,$coowner);
8406: }
8407: }
8408: unless (@newcoowners > 0) {
8409: $delcoowners = 1;
8410: $coowners = '';
8411: }
8412: }
8413: }
8414: if (@newcoowners || $delcoowners) {
8415: &store_coowners($cdom,$cnum,$coursehash{'home'},
8416: $delcoowners,@newcoowners);
8417: }
8418: }
8419: }
8420: }
8421: }
8422: }
8423: }
8424:
8425: sub store_coowners {
8426: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8427: my $cid = $cdom.'_'.$cnum;
8428: my ($coowners,$delresult,$putresult);
8429: if (@newcoowners) {
8430: $coowners = join(',',@newcoowners);
8431: my %coownershash = (
8432: 'internal.co-owners' => $coowners,
8433: );
8434: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8435: if ($putresult eq 'ok') {
8436: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8437: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8438: }
8439: }
8440: }
8441: if ($delcoowners) {
8442: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8443: if ($delresult eq 'ok') {
8444: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8445: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8446: }
8447: }
8448: }
8449: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8450: my %crsinfo =
8451: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8452: if (ref($crsinfo{$cid}) eq 'HASH') {
8453: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8454: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8455: }
8456: }
8457: }
8458:
8459: # -------------------------------------------------- Modify user authentication
8460: # Overrides without validation
8461:
8462: sub modifyuserauth {
8463: my ($udom,$uname,$umode,$upass)=@_;
8464: my $uhome=&homeserver($uname,$udom);
8465: unless (&allowed('mau',$udom)) { return 'refused'; }
8466: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8467: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8468: ' in domain '.$env{'request.role.domain'});
8469: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8470: &escape($upass),$uhome);
8471: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8472: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8473: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8474: &log($udom,,$uname,$uhome,
8475: 'Authentication changed by '.$env{'user.domain'}.', '.
8476: $env{'user.name'}.', '.$umode.
8477: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8478: unless ($reply eq 'ok') {
8479: &logthis('Authentication mode error: '.$reply);
8480: return 'error: '.$reply;
8481: }
8482: return 'ok';
8483: }
8484:
8485: # --------------------------------------------------------------- Modify a user
8486:
8487: sub modifyuser {
8488: my ($udom, $uname, $uid,
8489: $umode, $upass, $first,
8490: $middle, $last, $gene,
8491: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8492: $udom= &LONCAPA::clean_domain($udom);
8493: $uname=&LONCAPA::clean_username($uname);
8494: my $showcandelete = 'none';
8495: if (ref($candelete) eq 'ARRAY') {
8496: if (@{$candelete} > 0) {
8497: $showcandelete = join(', ',@{$candelete});
8498: }
8499: }
8500: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8501: $umode.', '.$first.', '.$middle.', '.
8502: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8503: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8504: ' desiredhome not specified').
8505: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8506: ' in domain '.$env{'request.role.domain'});
8507: my $uhome=&homeserver($uname,$udom,'true');
8508: my $newuser;
8509: if ($uhome eq 'no_host') {
8510: $newuser = 1;
8511: }
8512: # ----------------------------------------------------------------- Create User
8513: if (($uhome eq 'no_host') &&
8514: (($umode && $upass) || ($umode eq 'localauth'))) {
8515: my $unhome='';
8516: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8517: $unhome = $desiredhome;
8518: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8519: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8520: } else { # load balancing routine for determining $unhome
8521: my $loadm=10000000;
8522: my %servers = &get_servers($udom,'library');
8523: foreach my $tryserver (keys(%servers)) {
8524: my $answer=reply('load',$tryserver);
8525: if (($answer=~/\d+/) && ($answer<$loadm)) {
8526: $loadm=$answer;
8527: $unhome=$tryserver;
8528: }
8529: }
8530: }
8531: if (($unhome eq '') || ($unhome eq 'no_host')) {
8532: return 'error: unable to find a home server for '.$uname.
8533: ' in domain '.$udom;
8534: }
8535: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8536: &escape($upass),$unhome);
8537: unless ($reply eq 'ok') {
8538: return 'error: '.$reply;
8539: }
8540: $uhome=&homeserver($uname,$udom,'true');
8541: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8542: return 'error: unable verify users home machine.';
8543: }
8544: } # End of creation of new user
8545: # ---------------------------------------------------------------------- Add ID
8546: if ($uid) {
8547: $uid=~tr/A-Z/a-z/;
8548: my %uidhash=&idrget($udom,$uname);
8549: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8550: && (!$forceid)) {
8551: unless ($uid eq $uidhash{$uname}) {
8552: return 'error: user id "'.$uid.'" does not match '.
8553: 'current user id "'.$uidhash{$uname}.'".';
8554: }
8555: } else {
8556: &idput($udom,($uname => $uid));
8557: }
8558: }
8559: # -------------------------------------------------------------- Add names, etc
8560: my @tmp=&get('environment',
8561: ['firstname','middlename','lastname','generation','id',
8562: 'permanentemail','inststatus'],
8563: $udom,$uname);
8564: my (%names,%oldnames);
8565: if ($tmp[0] =~ m/^error:.*/) {
8566: %names=();
8567: } else {
8568: %names = @tmp;
8569: %oldnames = %names;
8570: }
8571: #
8572: # If name, email and/or uid are blank (e.g., because an uploaded file
8573: # of users did not contain them), do not overwrite existing values
8574: # unless field is in $candelete array ref.
8575: #
8576:
8577: my @fields = ('firstname','middlename','lastname','generation',
8578: 'permanentemail','id');
8579: my %newvalues;
8580: if (ref($candelete) eq 'ARRAY') {
8581: foreach my $field (@fields) {
8582: if (grep(/^\Q$field\E$/,@{$candelete})) {
8583: if ($field eq 'firstname') {
8584: $names{$field} = $first;
8585: } elsif ($field eq 'middlename') {
8586: $names{$field} = $middle;
8587: } elsif ($field eq 'lastname') {
8588: $names{$field} = $last;
8589: } elsif ($field eq 'generation') {
8590: $names{$field} = $gene;
8591: } elsif ($field eq 'permanentemail') {
8592: $names{$field} = $email;
8593: } elsif ($field eq 'id') {
8594: $names{$field} = $uid;
8595: }
8596: }
8597: }
8598: }
8599: if ($first) { $names{'firstname'} = $first; }
8600: if (defined($middle)) { $names{'middlename'} = $middle; }
8601: if ($last) { $names{'lastname'} = $last; }
8602: if (defined($gene)) { $names{'generation'} = $gene; }
8603: if ($email) {
8604: $email=~s/[^\w\@\.\-\,]//gs;
8605: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8606: }
8607: if ($uid) { $names{'id'} = $uid; }
8608: if (defined($inststatus)) {
8609: $names{'inststatus'} = '';
8610: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8611: if (ref($usertypes) eq 'HASH') {
8612: my @okstatuses;
8613: foreach my $item (split(/:/,$inststatus)) {
8614: if (defined($usertypes->{$item})) {
8615: push(@okstatuses,$item);
8616: }
8617: }
8618: if (@okstatuses) {
8619: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8620: }
8621: }
8622: }
8623: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8624: $umode.', '.$first.', '.$middle.', '.
8625: $last.', '.$gene.', '.$email.', '.$inststatus;
8626: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8627: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8628: } else {
8629: $logmsg .= ' during self creation';
8630: }
8631: my $changed;
8632: if ($newuser) {
8633: $changed = 1;
8634: } else {
8635: foreach my $field (@fields) {
8636: if ($names{$field} ne $oldnames{$field}) {
8637: $changed = 1;
8638: last;
8639: }
8640: }
8641: }
8642: unless ($changed) {
8643: $logmsg = 'No changes in user information needed for: '.$logmsg;
8644: &logthis($logmsg);
8645: return 'ok';
8646: }
8647: my $reply = &put('environment', \%names, $udom,$uname);
8648: if ($reply ne 'ok') {
8649: return 'error: '.$reply;
8650: }
8651: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8652: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8653: }
8654: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8655: &devalidate_cache_new('namescache',$uname.':'.$udom);
8656: $logmsg = 'Success modifying user '.$logmsg;
8657: &logthis($logmsg);
8658: return 'ok';
8659: }
8660:
8661: # -------------------------------------------------------------- Modify student
8662:
8663: sub modifystudent {
8664: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8665: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8666: $selfenroll,$context,$inststatus,$credits)=@_;
8667: if (!$cid) {
8668: unless ($cid=$env{'request.course.id'}) {
8669: return 'not_in_class';
8670: }
8671: }
8672: # --------------------------------------------------------------- Make the user
8673: my $reply=&modifyuser
8674: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8675: $desiredhome,$email,$inststatus);
8676: unless ($reply eq 'ok') { return $reply; }
8677: # This will cause &modify_student_enrollment to get the uid from the
8678: # student's environment
8679: $uid = undef if (!$forceid);
8680: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8681: $gene,$usec,$end,$start,$type,$locktype,
8682: $cid,$selfenroll,$context,$credits);
8683: return $reply;
8684: }
8685:
8686: sub modify_student_enrollment {
8687: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8688: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8689: my ($cdom,$cnum,$chome);
8690: if (!$cid) {
8691: unless ($cid=$env{'request.course.id'}) {
8692: return 'not_in_class';
8693: }
8694: $cdom=$env{'course.'.$cid.'.domain'};
8695: $cnum=$env{'course.'.$cid.'.num'};
8696: } else {
8697: ($cdom,$cnum)=split(/_/,$cid);
8698: }
8699: $chome=$env{'course.'.$cid.'.home'};
8700: if (!$chome) {
8701: $chome=&homeserver($cnum,$cdom);
8702: }
8703: if (!$chome) { return 'unknown_course'; }
8704: # Make sure the user exists
8705: my $uhome=&homeserver($uname,$udom);
8706: if (($uhome eq '') || ($uhome eq 'no_host')) {
8707: return 'error: no such user';
8708: }
8709: # Get student data if we were not given enough information
8710: if (!defined($first) || $first eq '' ||
8711: !defined($last) || $last eq '' ||
8712: !defined($uid) || $uid eq '' ||
8713: !defined($middle) || $middle eq '' ||
8714: !defined($gene) || $gene eq '') {
8715: # They did not supply us with enough data to enroll the student, so
8716: # we need to pick up more information.
8717: my %tmp = &get('environment',
8718: ['firstname','middlename','lastname', 'generation','id']
8719: ,$udom,$uname);
8720:
8721: #foreach my $key (keys(%tmp)) {
8722: # &logthis("key $key = ".$tmp{$key});
8723: #}
8724: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8725: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8726: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8727: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8728: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8729: }
8730: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8731: my $user = "$uname:$udom";
8732: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8733: my $reply=cput('classlist',
8734: {$user =>
8735: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8736: $cdom,$cnum);
8737: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8738: &devalidate_getsection_cache($udom,$uname,$cid);
8739: } else {
8740: return 'error: '.$reply;
8741: }
8742: # Add student role to user
8743: my $uurl='/'.$cid;
8744: $uurl=~s/\_/\//g;
8745: if ($usec) {
8746: $uurl.='/'.$usec;
8747: }
8748: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8749: $selfenroll,$context);
8750: if ($result ne 'ok') {
8751: if ($old_entry{$user} ne '') {
8752: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8753: } else {
8754: $reply = &del('classlist',[$user],$cdom,$cnum);
8755: }
8756: }
8757: return $result;
8758: }
8759:
8760: sub format_name {
8761: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8762: my $name;
8763: if ($first ne 'lastname') {
8764: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8765: } else {
8766: if ($lastname=~/\S/) {
8767: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8768: $name=~s/\s+,/,/;
8769: } else {
8770: $name.= $firstname.' '.$middlename.' '.$generation;
8771: }
8772: }
8773: $name=~s/^\s+//;
8774: $name=~s/\s+$//;
8775: $name=~s/\s+/ /g;
8776: return $name;
8777: }
8778:
8779: # ------------------------------------------------- Write to course preferences
8780:
8781: sub writecoursepref {
8782: my ($courseid,%prefs)=@_;
8783: $courseid=~s/^\///;
8784: $courseid=~s/\_/\//g;
8785: my ($cdomain,$cnum)=split(/\//,$courseid);
8786: my $chome=homeserver($cnum,$cdomain);
8787: if (($chome eq '') || ($chome eq 'no_host')) {
8788: return 'error: no such course';
8789: }
8790: my $cstring='';
8791: foreach my $pref (keys(%prefs)) {
8792: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8793: }
8794: $cstring=~s/\&$//;
8795: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8796: }
8797:
8798: # ---------------------------------------------------------- Make/modify course
8799:
8800: sub createcourse {
8801: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8802: $course_owner,$crstype,$cnum,$context,$category)=@_;
8803: $url=&declutter($url);
8804: my $cid='';
8805: if ($context eq 'requestcourses') {
8806: my $can_create = 0;
8807: my ($ownername,$ownerdom) = split(':',$course_owner);
8808: if ($udom eq $ownerdom) {
8809: if (&usertools_access($ownername,$ownerdom,$category,undef,
8810: $context)) {
8811: $can_create = 1;
8812: }
8813: } else {
8814: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8815: $category);
8816: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8817: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8818: if (@curr > 0) {
8819: my @options = qw(approval validate autolimit);
8820: my $optregex = join('|',@options);
8821: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8822: $can_create = 1;
8823: }
8824: }
8825: }
8826: }
8827: if ($can_create) {
8828: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8829: unless (&allowed('ccc',$udom)) {
8830: return 'refused';
8831: }
8832: }
8833: } else {
8834: return 'refused';
8835: }
8836: } elsif (!&allowed('ccc',$udom)) {
8837: return 'refused';
8838: }
8839: # --------------------------------------------------------------- Get Unique ID
8840: my $uname;
8841: if ($cnum =~ /^$match_courseid$/) {
8842: my $chome=&homeserver($cnum,$udom,'true');
8843: if (($chome eq '') || ($chome eq 'no_host')) {
8844: $uname = $cnum;
8845: } else {
8846: $uname = &generate_coursenum($udom,$crstype);
8847: }
8848: } else {
8849: $uname = &generate_coursenum($udom,$crstype);
8850: }
8851: return $uname if ($uname =~ /^error/);
8852: # -------------------------------------------------- Check supplied server name
8853: if (!defined($course_server)) {
8854: if (defined(&domain($udom,'primary'))) {
8855: $course_server = &domain($udom,'primary');
8856: } else {
8857: $course_server = $env{'user.home'};
8858: }
8859: }
8860: my %host_servers =
8861: &Apache::lonnet::get_servers($udom,'library');
8862: unless ($host_servers{$course_server}) {
8863: return 'error: invalid home server for course: '.$course_server;
8864: }
8865: # ------------------------------------------------------------- Make the course
8866: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8867: $course_server);
8868: unless ($reply eq 'ok') { return 'error: '.$reply; }
8869: my $uhome=&homeserver($uname,$udom,'true');
8870: if (($uhome eq '') || ($uhome eq 'no_host')) {
8871: return 'error: no such course';
8872: }
8873: # ----------------------------------------------------------------- Course made
8874: # log existence
8875: my $now = time;
8876: my $newcourse = {
8877: $udom.'_'.$uname => {
8878: description => $description,
8879: inst_code => $inst_code,
8880: owner => $course_owner,
8881: type => $crstype,
8882: creator => $env{'user.name'}.':'.
8883: $env{'user.domain'},
8884: created => $now,
8885: context => $context,
8886: },
8887: };
8888: &courseidput($udom,$newcourse,$uhome,'notime');
8889: # set toplevel url
8890: my $topurl=$url;
8891: unless ($nonstandard) {
8892: # ------------------------------------------ For standard courses, make top url
8893: my $mapurl=&clutter($url);
8894: if ($mapurl eq '/res/') { $mapurl=''; }
8895: $env{'form.initmap'}=(<<ENDINITMAP);
8896: <map>
8897: <resource id="1" type="start"></resource>
8898: <resource id="2" src="$mapurl"></resource>
8899: <resource id="3" type="finish"></resource>
8900: <link index="1" from="1" to="2"></link>
8901: <link index="2" from="2" to="3"></link>
8902: </map>
8903: ENDINITMAP
8904: $topurl=&declutter(
8905: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8906: );
8907: }
8908: # ----------------------------------------------------------- Write preferences
8909: &writecoursepref($udom.'_'.$uname,
8910: ('description' => $description,
8911: 'url' => $topurl,
8912: 'internal.creator' => $env{'user.name'}.':'.
8913: $env{'user.domain'},
8914: 'internal.created' => $now,
8915: 'internal.creationcontext' => $context)
8916: );
8917: return '/'.$udom.'/'.$uname;
8918: }
8919:
8920: # ------------------------------------------------------------------- Create ID
8921: sub generate_coursenum {
8922: my ($udom,$crstype) = @_;
8923: my $domdesc = &domain($udom);
8924: return 'error: invalid domain' if ($domdesc eq '');
8925: my $first;
8926: if ($crstype eq 'Community') {
8927: $first = '0';
8928: } else {
8929: $first = int(1+rand(9));
8930: }
8931: my $uname=$first.
8932: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8933: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8934: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8935: # ----------------------------------------------- Make sure that does not exist
8936: my $uhome=&homeserver($uname,$udom,'true');
8937: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8938: if ($crstype eq 'Community') {
8939: $first = '0';
8940: } else {
8941: $first = int(1+rand(9));
8942: }
8943: $uname=$first.
8944: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8945: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8946: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8947: $uhome=&homeserver($uname,$udom,'true');
8948: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8949: return 'error: unable to generate unique course-ID';
8950: }
8951: }
8952: return $uname;
8953: }
8954:
8955: sub is_course {
8956: my ($cdom, $cnum) = scalar(@_) == 1 ?
8957: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8958:
8959: return unless $cdom and $cnum;
8960:
8961: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8962: '.');
8963:
8964: return unless(exists($courses{$cdom.'_'.$cnum}));
8965: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8966: }
8967:
8968: sub store_userdata {
8969: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8970: my $result;
8971: if ($datakey ne '') {
8972: if (ref($storehash) eq 'HASH') {
8973: if ($udom eq '' || $uname eq '') {
8974: $udom = $env{'user.domain'};
8975: $uname = $env{'user.name'};
8976: }
8977: my $uhome=&homeserver($uname,$udom);
8978: if (($uhome eq '') || ($uhome eq 'no_host')) {
8979: $result = 'error: no_host';
8980: } else {
8981: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8982: $storehash->{'host'} = $perlvar{'lonHostID'};
8983:
8984: my $namevalue='';
8985: foreach my $key (keys(%{$storehash})) {
8986: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8987: }
8988: $namevalue=~s/\&$//;
8989: unless ($namespace eq 'courserequests') {
8990: $datakey = &escape($datakey);
8991: }
8992: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8993: $namevalue,$uhome);
8994: }
8995: } else {
8996: $result = 'error: data to store was not a hash reference';
8997: }
8998: } else {
8999: $result= 'error: invalid requestkey';
9000: }
9001: return $result;
9002: }
9003:
9004: # ---------------------------------------------------------- Assign Custom Role
9005:
9006: sub assigncustomrole {
9007: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
9008: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
9009: $end,$start,$deleteflag,$selfenroll,$context);
9010: }
9011:
9012: # ----------------------------------------------------------------- Revoke Role
9013:
9014: sub revokerole {
9015: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
9016: my $now=time;
9017: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
9018: }
9019:
9020: # ---------------------------------------------------------- Revoke Custom Role
9021:
9022: sub revokecustomrole {
9023: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9024: my $now=time;
9025: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9026: $deleteflag,$selfenroll,$context);
9027: }
9028:
9029: # ------------------------------------------------------------ Disk usage
9030: sub diskusage {
9031: my ($udom,$uname,$directorypath,$getpropath)=@_;
9032: $directorypath =~ s/\/$//;
9033: my $listing=&reply('du2:'.&escape($directorypath).':'
9034: .&escape($getpropath).':'.&escape($uname).':'
9035: .&escape($udom),homeserver($uname,$udom));
9036: if ($listing eq 'unknown_cmd') {
9037: if ($getpropath) {
9038: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9039: }
9040: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9041: }
9042: return $listing;
9043: }
9044:
9045: sub is_locked {
9046: my ($file_name, $domain, $user, $which) = @_;
9047: my @check;
9048: my $is_locked;
9049: push (@check,$file_name);
9050: my %locked = &get('file_permissions',\@check,
9051: $env{'user.domain'},$env{'user.name'});
9052: my ($tmp)=keys(%locked);
9053: if ($tmp=~/^error:/) { undef(%locked); }
9054:
9055: if (ref($locked{$file_name}) eq 'ARRAY') {
9056: $is_locked = 'false';
9057: foreach my $entry (@{$locked{$file_name}}) {
9058: if (ref($entry) eq 'ARRAY') {
9059: $is_locked = 'true';
9060: if (ref($which) eq 'ARRAY') {
9061: push(@{$which},$entry);
9062: } else {
9063: last;
9064: }
9065: }
9066: }
9067: } else {
9068: $is_locked = 'false';
9069: }
9070: return $is_locked;
9071: }
9072:
9073: sub declutter_portfile {
9074: my ($file) = @_;
9075: $file =~ s{^(/portfolio/|portfolio/)}{/};
9076: return $file;
9077: }
9078:
9079: # ------------------------------------------------------------- Mark as Read Only
9080:
9081: sub mark_as_readonly {
9082: my ($domain,$user,$files,$what) = @_;
9083: my %current_permissions = &dump('file_permissions',$domain,$user);
9084: my ($tmp)=keys(%current_permissions);
9085: if ($tmp=~/^error:/) { undef(%current_permissions); }
9086: foreach my $file (@{$files}) {
9087: $file = &declutter_portfile($file);
9088: push(@{$current_permissions{$file}},$what);
9089: }
9090: &put('file_permissions',\%current_permissions,$domain,$user);
9091: return;
9092: }
9093:
9094: # ------------------------------------------------------------Save Selected Files
9095:
9096: sub save_selected_files {
9097: my ($user, $path, @files) = @_;
9098: my $filename = $user."savedfiles";
9099: my @other_files = &files_not_in_path($user, $path);
9100: open (OUT, '>'.$tmpdir.$filename);
9101: foreach my $file (@files) {
9102: print (OUT $env{'form.currentpath'}.$file."\n");
9103: }
9104: foreach my $file (@other_files) {
9105: print (OUT $file."\n");
9106: }
9107: close (OUT);
9108: return 'ok';
9109: }
9110:
9111: sub clear_selected_files {
9112: my ($user) = @_;
9113: my $filename = $user."savedfiles";
9114: open (OUT, '>'.LONCAPA::tempdir().$filename);
9115: print (OUT undef);
9116: close (OUT);
9117: return ("ok");
9118: }
9119:
9120: sub files_in_path {
9121: my ($user, $path) = @_;
9122: my $filename = $user."savedfiles";
9123: my %return_files;
9124: open (IN, '<'.LONCAPA::tempdir().$filename);
9125: while (my $line_in = <IN>) {
9126: chomp ($line_in);
9127: my @paths_and_file = split (m!/!, $line_in);
9128: my $file_part = pop (@paths_and_file);
9129: my $path_part = join ('/', @paths_and_file);
9130: $path_part.='/';
9131: my $path_and_file = $path_part.$file_part;
9132: if ($path_part eq $path) {
9133: $return_files{$file_part}= 'selected';
9134: }
9135: }
9136: close (IN);
9137: return (\%return_files);
9138: }
9139:
9140: # called in portfolio select mode, to show files selected NOT in current directory
9141: sub files_not_in_path {
9142: my ($user, $path) = @_;
9143: my $filename = $user."savedfiles";
9144: my @return_files;
9145: my $path_part;
9146: open(IN, '<'.LONCAPA::.$filename);
9147: while (my $line = <IN>) {
9148: #ok, I know it's clunky, but I want it to work
9149: my @paths_and_file = split(m|/|, $line);
9150: my $file_part = pop(@paths_and_file);
9151: chomp($file_part);
9152: my $path_part = join('/', @paths_and_file);
9153: $path_part .= '/';
9154: my $path_and_file = $path_part.$file_part;
9155: if ($path_part ne $path) {
9156: push(@return_files, ($path_and_file));
9157: }
9158: }
9159: close(OUT);
9160: return (@return_files);
9161: }
9162:
9163: #------------------------------Submitted/Handedback Portfolio Files Versioning
9164:
9165: sub portfiles_versioning {
9166: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
9167: my $portfolio_root = '/userfiles/portfolio';
9168: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
9169: foreach my $file (@{$portfiles}) {
9170: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
9171: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
9172: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
9173: my $getpropath = 1;
9174: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
9175: $stu_name,$getpropath);
9176: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
9177: my $new_answer =
9178: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
9179: if ($new_answer ne 'problem getting file') {
9180: push(@{$versioned_portfiles}, $directory.$new_answer);
9181: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
9182: [$symb,$env{'request.course.id'},'graded']);
9183: }
9184: }
9185: }
9186:
9187: sub get_next_version {
9188: my ($answer_name, $answer_ext, $dir_list) = @_;
9189: my $version;
9190: if (ref($dir_list) eq 'ARRAY') {
9191: foreach my $row (@{$dir_list}) {
9192: my ($file) = split(/\&/,$row,2);
9193: my ($file_name,$file_version,$file_ext) =
9194: &file_name_version_ext($file);
9195: if (($file_name eq $answer_name) &&
9196: ($file_ext eq $answer_ext)) {
9197: # gets here if filename and extension match,
9198: # regardless of version
9199: if ($file_version ne '') {
9200: # a versioned file is found so save it for later
9201: if ($file_version > $version) {
9202: $version = $file_version;
9203: }
9204: }
9205: }
9206: }
9207: }
9208: $version ++;
9209: return($version);
9210: }
9211:
9212: sub version_selected_portfile {
9213: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
9214: my ($answer_name,$answer_ver,$answer_ext) =
9215: &file_name_version_ext($file_name);
9216: my $new_answer;
9217: $env{'form.copy'} =
9218: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
9219: if($env{'form.copy'} eq '-1') {
9220: $new_answer = 'problem getting file';
9221: } else {
9222: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
9223: my $copy_result =
9224: &finishuserfileupload($stu_name,$domain,'copy',
9225: '/portfolio'.$directory.$new_answer);
9226: }
9227: undef($env{'form.copy'});
9228: return ($new_answer);
9229: }
9230:
9231: sub file_name_version_ext {
9232: my ($file)=@_;
9233: my @file_parts = split(/\./, $file);
9234: my ($name,$version,$ext);
9235: if (@file_parts > 1) {
9236: $ext=pop(@file_parts);
9237: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
9238: $version=pop(@file_parts);
9239: }
9240: $name=join('.',@file_parts);
9241: } else {
9242: $name=join('.',@file_parts);
9243: }
9244: return($name,$version,$ext);
9245: }
9246:
9247: #----------------------------------------------Get portfolio file permissions
9248:
9249: sub get_portfile_permissions {
9250: my ($domain,$user) = @_;
9251: my %current_permissions = &dump('file_permissions',$domain,$user);
9252: my ($tmp)=keys(%current_permissions);
9253: if ($tmp=~/^error:/) { undef(%current_permissions); }
9254: return \%current_permissions;
9255: }
9256:
9257: #---------------------------------------------Get portfolio file access controls
9258:
9259: sub get_access_controls {
9260: my ($current_permissions,$group,$file) = @_;
9261: my %access;
9262: my $real_file = $file;
9263: $file =~ s/\.meta$//;
9264: if (defined($file)) {
9265: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9266: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9267: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9268: }
9269: }
9270: } else {
9271: foreach my $key (keys(%{$current_permissions})) {
9272: if ($key =~ /\0accesscontrol$/) {
9273: if (defined($group)) {
9274: if ($key !~ m-^\Q$group\E/-) {
9275: next;
9276: }
9277: }
9278: my ($fullpath) = split(/\0/,$key);
9279: if (ref($$current_permissions{$key}) eq 'HASH') {
9280: foreach my $control (keys(%{$$current_permissions{$key}})) {
9281: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9282: }
9283: }
9284: }
9285: }
9286: }
9287: return %access;
9288: }
9289:
9290: sub modify_access_controls {
9291: my ($file_name,$changes,$domain,$user)=@_;
9292: my ($outcome,$deloutcome);
9293: my %store_permissions;
9294: my %new_values;
9295: my %new_control;
9296: my %translation;
9297: my @deletions = ();
9298: my $now = time;
9299: if (exists($$changes{'activate'})) {
9300: if (ref($$changes{'activate'}) eq 'HASH') {
9301: my @newitems = sort(keys(%{$$changes{'activate'}}));
9302: my $numnew = scalar(@newitems);
9303: for (my $i=0; $i<$numnew; $i++) {
9304: my $newkey = $newitems[$i];
9305: my $newid = &Apache::loncommon::get_cgi_id();
9306: if ($newkey =~ /^\d+:/) {
9307: $newkey =~ s/^(\d+)/$newid/;
9308: $translation{$1} = $newid;
9309: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9310: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9311: $translation{$1} = $newid;
9312: }
9313: $new_values{$file_name."\0".$newkey} =
9314: $$changes{'activate'}{$newitems[$i]};
9315: $new_control{$newkey} = $now;
9316: }
9317: }
9318: }
9319: my %todelete;
9320: my %changed_items;
9321: foreach my $action ('delete','update') {
9322: if (exists($$changes{$action})) {
9323: if (ref($$changes{$action}) eq 'HASH') {
9324: foreach my $key (keys(%{$$changes{$action}})) {
9325: my ($itemnum) = ($key =~ /^([^:]+):/);
9326: if ($action eq 'delete') {
9327: $todelete{$itemnum} = 1;
9328: } else {
9329: $changed_items{$itemnum} = $key;
9330: }
9331: }
9332: }
9333: }
9334: }
9335: # get lock on access controls for file.
9336: my $lockhash = {
9337: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9338: ':'.$env{'user.domain'},
9339: };
9340: my $tries = 0;
9341: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9342:
9343: while (($gotlock ne 'ok') && $tries <3) {
9344: $tries ++;
9345: sleep 1;
9346: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9347: }
9348: if ($gotlock eq 'ok') {
9349: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9350: my ($tmp)=keys(%curr_permissions);
9351: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9352: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9353: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9354: if (ref($curr_controls) eq 'HASH') {
9355: foreach my $control_item (keys(%{$curr_controls})) {
9356: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9357: if (defined($todelete{$itemnum})) {
9358: push(@deletions,$file_name."\0".$control_item);
9359: } else {
9360: if (defined($changed_items{$itemnum})) {
9361: $new_control{$changed_items{$itemnum}} = $now;
9362: push(@deletions,$file_name."\0".$control_item);
9363: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9364: } else {
9365: $new_control{$control_item} = $$curr_controls{$control_item};
9366: }
9367: }
9368: }
9369: }
9370: }
9371: my ($group);
9372: if (&is_course($domain,$user)) {
9373: ($group,my $file) = split(/\//,$file_name,2);
9374: }
9375: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9376: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9377: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9378: # remove lock
9379: my @del_lock = ($file_name."\0".'locked_access_records');
9380: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9381: my $sqlresult =
9382: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9383: $group);
9384: } else {
9385: $outcome = "error: could not obtain lockfile\n";
9386: }
9387: return ($outcome,$deloutcome,\%new_values,\%translation);
9388: }
9389:
9390: sub make_public_indefinitely {
9391: my (@requrl) = @_;
9392: return &automated_portfile_access('public',\@requrl);
9393: }
9394:
9395: sub automated_portfile_access {
9396: my ($accesstype,$addsref,$delsref,$info) = @_;
9397: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
9398: return 'invalid';
9399: }
9400: my %urls;
9401: if (ref($addsref) eq 'ARRAY') {
9402: foreach my $requrl (@{$addsref}) {
9403: if (&is_portfolio_url($requrl)) {
9404: unless (exists($urls{$requrl})) {
9405: $urls{$requrl} = 'add';
9406: }
9407: }
9408: }
9409: }
9410: if (ref($delsref) eq 'ARRAY') {
9411: foreach my $requrl (@{$delsref}) {
9412: if (&is_portfolio_url($requrl)) {
9413: unless (exists($urls{$requrl})) {
9414: $urls{$requrl} = 'delete';
9415: }
9416: }
9417: }
9418: }
9419: unless (keys(%urls)) {
9420: return 'invalid';
9421: }
9422: my $ip;
9423: if ($accesstype eq 'ip') {
9424: if (ref($info) eq 'HASH') {
9425: if ($info->{'ip'} ne '') {
9426: $ip = $info->{'ip'};
9427: }
9428: }
9429: if ($ip eq '') {
9430: return 'invalid';
9431: }
9432: }
9433: my $errors;
9434: my $now = time;
9435: my %current_perms;
9436: foreach my $requrl (sort(keys(%urls))) {
9437: my $action;
9438: if ($urls{$requrl} eq 'add') {
9439: $action = 'activate';
9440: } else {
9441: $action = 'none';
9442: }
9443: my $aclnum = 0;
9444: my (undef,$udom,$unum,$file_name,$group) =
9445: &parse_portfolio_url($requrl);
9446: unless (exists($current_perms{$unum.':'.$udom})) {
9447: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
9448: }
9449: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
9450: $group,$file_name);
9451: foreach my $key (keys(%{$access_controls{$file_name}})) {
9452: my ($num,$scope,$end,$start) =
9453: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9454: if ($scope eq $accesstype) {
9455: if (($start <= $now) && ($end == 0)) {
9456: if ($accesstype eq 'ip') {
9457: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
9458: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
9459: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
9460: if ($urls{$requrl} eq 'add') {
9461: $action = 'none';
9462: last;
9463: } else {
9464: $action = 'delete';
9465: $aclnum = $num;
9466: last;
9467: }
9468: }
9469: }
9470: }
9471: } elsif ($accesstype eq 'public') {
9472: if ($urls{$requrl} eq 'add') {
9473: $action = 'none';
9474: last;
9475: } else {
9476: $action = 'delete';
9477: $aclnum = $num;
9478: last;
9479: }
9480: }
9481: } elsif ($accesstype eq 'public') {
9482: $action = 'update';
9483: $aclnum = $num;
9484: last;
9485: }
9486: }
9487: }
9488: if ($action eq 'none') {
9489: next;
9490: } else {
9491: my %changes;
9492: my $newend = 0;
9493: my $newstart = $now;
9494: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
9495: $changes{$action}{$newkey} = {
9496: type => $accesstype,
9497: time => {
9498: start => $newstart,
9499: end => $newend,
9500: },
9501: };
9502: if ($accesstype eq 'ip') {
9503: $changes{$action}{$newkey}{'ip'} = [$ip];
9504: }
9505: my ($outcome,$deloutcome,$new_values,$translation) =
9506: &modify_access_controls($file_name,\%changes,$udom,$unum);
9507: unless ($outcome eq 'ok') {
9508: $errors .= $outcome.' ';
9509: }
9510: }
9511: }
9512: if ($errors) {
9513: $errors =~ s/\s$//;
9514: return $errors;
9515: } else {
9516: return 'ok';
9517: }
9518: }
9519:
9520: #------------------------------------------------------Get Marked as Read Only
9521:
9522: sub get_marked_as_readonly {
9523: my ($domain,$user,$what,$group) = @_;
9524: my $current_permissions = &get_portfile_permissions($domain,$user);
9525: my @readonly_files;
9526: my $cmp1=$what;
9527: if (ref($what)) { $cmp1=join('',@{$what}) };
9528: while (my ($file_name,$value) = each(%{$current_permissions})) {
9529: if (defined($group)) {
9530: if ($file_name !~ m-^\Q$group\E/-) {
9531: next;
9532: }
9533: }
9534: if (ref($value) eq "ARRAY"){
9535: foreach my $stored_what (@{$value}) {
9536: my $cmp2=$stored_what;
9537: if (ref($stored_what) eq 'ARRAY') {
9538: $cmp2=join('',@{$stored_what});
9539: }
9540: if ($cmp1 eq $cmp2) {
9541: push(@readonly_files, $file_name);
9542: last;
9543: } elsif (!defined($what)) {
9544: push(@readonly_files, $file_name);
9545: last;
9546: }
9547: }
9548: }
9549: }
9550: return @readonly_files;
9551: }
9552: #-----------------------------------------------------------Get Marked as Read Only Hash
9553:
9554: sub get_marked_as_readonly_hash {
9555: my ($current_permissions,$group,$what) = @_;
9556: my %readonly_files;
9557: while (my ($file_name,$value) = each(%{$current_permissions})) {
9558: if (defined($group)) {
9559: if ($file_name !~ m-^\Q$group\E/-) {
9560: next;
9561: }
9562: }
9563: if (ref($value) eq "ARRAY"){
9564: foreach my $stored_what (@{$value}) {
9565: if (ref($stored_what) eq 'ARRAY') {
9566: foreach my $lock_descriptor(@{$stored_what}) {
9567: if ($lock_descriptor eq 'graded') {
9568: $readonly_files{$file_name} = 'graded';
9569: } elsif ($lock_descriptor eq 'handback') {
9570: $readonly_files{$file_name} = 'handback';
9571: } else {
9572: if (!exists($readonly_files{$file_name})) {
9573: $readonly_files{$file_name} = 'locked';
9574: }
9575: }
9576: }
9577: }
9578: }
9579: }
9580: }
9581: return %readonly_files;
9582: }
9583: # ------------------------------------------------------------ Unmark as Read Only
9584:
9585: sub unmark_as_readonly {
9586: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9587: # for portfolio submissions, $what contains [$symb,$crsid]
9588: my ($domain,$user,$what,$file_name,$group) = @_;
9589: $file_name = &declutter_portfile($file_name);
9590: my $symb_crs = $what;
9591: if (ref($what)) { $symb_crs=join('',@$what); }
9592: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9593: my ($tmp)=keys(%current_permissions);
9594: if ($tmp=~/^error:/) { undef(%current_permissions); }
9595: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9596: foreach my $file (@readonly_files) {
9597: my $clean_file = &declutter_portfile($file);
9598: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9599: my $current_locks = $current_permissions{$file};
9600: my @new_locks;
9601: my @del_keys;
9602: if (ref($current_locks) eq "ARRAY"){
9603: foreach my $locker (@{$current_locks}) {
9604: my $compare=$locker;
9605: if (ref($locker) eq 'ARRAY') {
9606: $compare=join('',@{$locker});
9607: if ($compare ne $symb_crs) {
9608: push(@new_locks, $locker);
9609: }
9610: }
9611: }
9612: if (scalar(@new_locks) > 0) {
9613: $current_permissions{$file} = \@new_locks;
9614: } else {
9615: push(@del_keys, $file);
9616: &del('file_permissions',\@del_keys, $domain, $user);
9617: delete($current_permissions{$file});
9618: }
9619: }
9620: }
9621: &put('file_permissions',\%current_permissions,$domain,$user);
9622: return;
9623: }
9624:
9625: # ------------------------------------------------------------ Directory lister
9626:
9627: sub dirlist {
9628: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9629: $uri=~s/^\///;
9630: $uri=~s/\/$//;
9631: my ($udom, $uname);
9632: if ($getuserdir) {
9633: $udom = $userdomain;
9634: $uname = $username;
9635: } else {
9636: (undef,$udom,$uname)=split(/\//,$uri);
9637: if(defined($userdomain)) {
9638: $udom = $userdomain;
9639: }
9640: if(defined($username)) {
9641: $uname = $username;
9642: }
9643: }
9644: my ($dirRoot,$listing,@listing_results);
9645:
9646: $dirRoot = $perlvar{'lonDocRoot'};
9647: if (defined($getpropath)) {
9648: $dirRoot = &propath($udom,$uname);
9649: $dirRoot =~ s/\/$//;
9650: } elsif (defined($getuserdir)) {
9651: my $subdir=$uname.'__';
9652: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9653: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9654: ."/$udom/$subdir/$uname";
9655: } elsif (defined($alternateRoot)) {
9656: $dirRoot = $alternateRoot;
9657: }
9658:
9659: if($udom) {
9660: if($uname) {
9661: my $uhome = &homeserver($uname,$udom);
9662: if ($uhome eq 'no_host') {
9663: return ([],'no_host');
9664: }
9665: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9666: .$getuserdir.':'.&escape($dirRoot)
9667: .':'.&escape($uname).':'.&escape($udom),$uhome);
9668: if ($listing eq 'unknown_cmd') {
9669: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9670: } else {
9671: @listing_results = map { &unescape($_); } split(/:/,$listing);
9672: }
9673: if ($listing eq 'unknown_cmd') {
9674: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9675: @listing_results = split(/:/,$listing);
9676: } else {
9677: @listing_results = map { &unescape($_); } split(/:/,$listing);
9678: }
9679: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9680: ($listing eq 'rejected') || ($listing eq 'refused') ||
9681: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9682: return ([],$listing);
9683: } else {
9684: return (\@listing_results);
9685: }
9686: } elsif(!$alternateRoot) {
9687: my (%allusers,%listerror);
9688: my %servers = &get_servers($udom,'library');
9689: foreach my $tryserver (keys(%servers)) {
9690: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9691: &escape($udom),$tryserver);
9692: if ($listing eq 'unknown_cmd') {
9693: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9694: $udom, $tryserver);
9695: } else {
9696: @listing_results = map { &unescape($_); } split(/:/,$listing);
9697: }
9698: if ($listing eq 'unknown_cmd') {
9699: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9700: $udom, $tryserver);
9701: @listing_results = split(/:/,$listing);
9702: } else {
9703: @listing_results =
9704: map { &unescape($_); } split(/:/,$listing);
9705: }
9706: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9707: ($listing eq 'rejected') || ($listing eq 'refused') ||
9708: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9709: $listerror{$tryserver} = $listing;
9710: } else {
9711: foreach my $line (@listing_results) {
9712: my ($entry) = split(/&/,$line,2);
9713: $allusers{$entry} = 1;
9714: }
9715: }
9716: }
9717: my @alluserslist=();
9718: foreach my $user (sort(keys(%allusers))) {
9719: push(@alluserslist,$user.'&user');
9720: }
9721: return (\@alluserslist);
9722: } else {
9723: return ([],'missing username');
9724: }
9725: } elsif(!defined($getpropath)) {
9726: my $path = $perlvar{'lonDocRoot'}.'/res/';
9727: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9728: return (\@all_domains);
9729: } else {
9730: return ([],'missing domain');
9731: }
9732: }
9733:
9734: # --------------------------------------------- GetFileTimestamp
9735: # This function utilizes dirlist and returns the date stamp for
9736: # when it was last modified. It will also return an error of -1
9737: # if an error occurs
9738:
9739: sub GetFileTimestamp {
9740: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9741: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9742: $studentName = &LONCAPA::clean_username($studentName);
9743: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9744: undef,$getuserdir);
9745: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9746: return -1;
9747: }
9748: if (ref($fileref) eq 'ARRAY') {
9749: my @stats = split('&',$fileref->[0]);
9750: # @stats contains first the filename, then the stat output
9751: return $stats[10]; # so this is 10 instead of 9.
9752: } else {
9753: return -1;
9754: }
9755: }
9756:
9757: sub stat_file {
9758: my ($uri) = @_;
9759: $uri = &clutter_with_no_wrapper($uri);
9760:
9761: my ($udom,$uname,$file);
9762: if ($uri =~ m-^/(uploaded|editupload)/-) {
9763: ($udom,$uname,$file) =
9764: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9765: $file = 'userfiles/'.$file;
9766: }
9767: if ($uri =~ m-^/res/-) {
9768: ($udom,$uname) =
9769: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9770: $file = $uri;
9771: }
9772:
9773: if (!$udom || !$uname || !$file) {
9774: # unable to handle the uri
9775: return ();
9776: }
9777: my $getpropath;
9778: if ($file =~ /^userfiles\//) {
9779: $getpropath = 1;
9780: }
9781: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9782: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9783: return ();
9784: } else {
9785: if (ref($listref) eq 'ARRAY') {
9786: my @stats = split('&',$listref->[0]);
9787: shift(@stats); #filename is first
9788: return @stats;
9789: }
9790: }
9791: return ();
9792: }
9793:
9794: # -------------------------------------------------------- Value of a Condition
9795:
9796: # gets the value of a specific preevaluated condition
9797: # stored in the string $env{user.state.<cid>}
9798: # or looks up a condition reference in the bighash and if if hasn't
9799: # already been evaluated recurses into docondval to get the value of
9800: # the condition, then memoizing it to
9801: # $env{user.state.<cid>.<condition>}
9802: sub directcondval {
9803: my $number=shift;
9804: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9805: &Apache::lonuserstate::evalstate();
9806: }
9807: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9808: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9809: } elsif ($number =~ /^_/) {
9810: my $sub_condition;
9811: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9812: &GDBM_READER(),0640)) {
9813: $sub_condition=$bighash{'conditions'.$number};
9814: untie(%bighash);
9815: }
9816: my $value = &docondval($sub_condition);
9817: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9818: return $value;
9819: }
9820: if ($env{'user.state.'.$env{'request.course.id'}}) {
9821: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9822: } else {
9823: return 2;
9824: }
9825: }
9826:
9827: # get the collection of conditions for this resource
9828: sub condval {
9829: my $condidx=shift;
9830: my $allpathcond='';
9831: foreach my $cond (split(/\|/,$condidx)) {
9832: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9833: $allpathcond.=
9834: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9835: }
9836: }
9837: $allpathcond=~s/\|$//;
9838: return &docondval($allpathcond);
9839: }
9840:
9841: #evaluates an expression of conditions
9842: sub docondval {
9843: my ($allpathcond) = @_;
9844: my $result=0;
9845: if ($env{'request.course.id'}
9846: && defined($allpathcond)) {
9847: my $operand='|';
9848: my @stack;
9849: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9850: if ($chunk eq '(') {
9851: push @stack,($operand,$result);
9852: } elsif ($chunk eq ')') {
9853: my $before=pop @stack;
9854: if (pop @stack eq '&') {
9855: $result=$result>$before?$before:$result;
9856: } else {
9857: $result=$result>$before?$result:$before;
9858: }
9859: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9860: $operand=$chunk;
9861: } else {
9862: my $new=directcondval($chunk);
9863: if ($operand eq '&') {
9864: $result=$result>$new?$new:$result;
9865: } else {
9866: $result=$result>$new?$result:$new;
9867: }
9868: }
9869: }
9870: }
9871: return $result;
9872: }
9873:
9874: # ---------------------------------------------------- Devalidate courseresdata
9875:
9876: sub devalidatecourseresdata {
9877: my ($coursenum,$coursedomain)=@_;
9878: my $hashid=$coursenum.':'.$coursedomain;
9879: &devalidate_cache_new('courseres',$hashid);
9880: }
9881:
9882:
9883: # --------------------------------------------------- Course Resourcedata Query
9884: #
9885: # Parameters:
9886: # $coursenum - Number of the course.
9887: # $coursedomain - Domain at which the course was created.
9888: # Returns:
9889: # A hash of the course parameters along (I think) with timestamps
9890: # and version info.
9891:
9892: sub get_courseresdata {
9893: my ($coursenum,$coursedomain)=@_;
9894: my $coursehom=&homeserver($coursenum,$coursedomain);
9895: my $hashid=$coursenum.':'.$coursedomain;
9896: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9897: my %dumpreply;
9898: unless (defined($cached)) {
9899: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9900: $result=\%dumpreply;
9901: my ($tmp) = keys(%dumpreply);
9902: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9903: &do_cache_new('courseres',$hashid,$result,600);
9904: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9905: return $tmp;
9906: } elsif ($tmp =~ /^(error)/) {
9907: $result=undef;
9908: &do_cache_new('courseres',$hashid,$result,600);
9909: }
9910: }
9911: return $result;
9912: }
9913:
9914: sub devalidateuserresdata {
9915: my ($uname,$udom)=@_;
9916: my $hashid="$udom:$uname";
9917: &devalidate_cache_new('userres',$hashid);
9918: }
9919:
9920: sub get_userresdata {
9921: my ($uname,$udom)=@_;
9922: #most student don\'t have any data set, check if there is some data
9923: if (&EXT_cache_status($udom,$uname)) { return undef; }
9924:
9925: my $hashid="$udom:$uname";
9926: my ($result,$cached)=&is_cached_new('userres',$hashid);
9927: if (!defined($cached)) {
9928: my %resourcedata=&dump('resourcedata',$udom,$uname);
9929: $result=\%resourcedata;
9930: &do_cache_new('userres',$hashid,$result,600);
9931: }
9932: my ($tmp)=keys(%$result);
9933: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9934: return $result;
9935: }
9936: #error 2 occurs when the .db doesn't exist
9937: if ($tmp!~/error: 2 /) {
9938: &logthis("<font color=\"blue\">WARNING:".
9939: " Trying to get resource data for ".
9940: $uname." at ".$udom.": ".
9941: $tmp."</font>");
9942: } elsif ($tmp=~/error: 2 /) {
9943: #&EXT_cache_set($udom,$uname);
9944: &do_cache_new('userres',$hashid,undef,600);
9945: undef($tmp); # not really an error so don't send it back
9946: }
9947: return $tmp;
9948: }
9949: #----------------------------------------------- resdata - return resource data
9950: # Purpose:
9951: # Return resource data for either users or for a course.
9952: # Parameters:
9953: # $name - Course/user name.
9954: # $domain - Name of the domain the user/course is registered on.
9955: # $type - Type of thing $name is (must be 'course' or 'user'
9956: # @which - Array of names of resources desired.
9957: # Returns:
9958: # The value of the first reasource in @which that is found in the
9959: # resource hash.
9960: # Exceptional Conditions:
9961: # If the $type passed in is not valid (not the string 'course' or
9962: # 'user', an undefined reference is returned.
9963: # If none of the resources are found, an undef is returned
9964: sub resdata {
9965: my ($name,$domain,$type,@which)=@_;
9966: my $result;
9967: if ($type eq 'course') {
9968: $result=&get_courseresdata($name,$domain);
9969: } elsif ($type eq 'user') {
9970: $result=&get_userresdata($name,$domain);
9971: }
9972: if (!ref($result)) { return $result; }
9973: foreach my $item (@which) {
9974: if (defined($result->{$item->[0]})) {
9975: return [$result->{$item->[0]},$item->[1]];
9976: }
9977: }
9978: return undef;
9979: }
9980:
9981: sub get_numsuppfiles {
9982: my ($cnum,$cdom,$ignorecache)=@_;
9983: my $hashid=$cnum.':'.$cdom;
9984: my ($suppcount,$cached);
9985: unless ($ignorecache) {
9986: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
9987: }
9988: unless (defined($cached)) {
9989: my $chome=&homeserver($cnum,$cdom);
9990: unless ($chome eq 'no_host') {
9991: ($suppcount,my $errors) = (0,0);
9992: my $suppmap = 'supplemental.sequence';
9993: ($suppcount,$errors) =
9994: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
9995: }
9996: &do_cache_new('suppcount',$hashid,$suppcount,600);
9997: }
9998: return $suppcount;
9999: }
10000:
10001: #
10002: # EXT resource caching routines
10003: #
10004:
10005: sub clear_EXT_cache_status {
10006: &delenv('cache.EXT.');
10007: }
10008:
10009: sub EXT_cache_status {
10010: my ($target_domain,$target_user) = @_;
10011: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10012: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
10013: # We know already the user has no data
10014: return 1;
10015: } else {
10016: return 0;
10017: }
10018: }
10019:
10020: sub EXT_cache_set {
10021: my ($target_domain,$target_user) = @_;
10022: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10023: #&appenv({$cachename => time});
10024: }
10025:
10026: # --------------------------------------------------------- Value of a Variable
10027: sub EXT {
10028:
10029: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
10030: unless ($varname) { return ''; }
10031: #get real user name/domain, courseid and symb
10032: my $courseid;
10033: my $publicuser;
10034: if ($symbparm) {
10035: $symbparm=&get_symb_from_alias($symbparm);
10036: }
10037: if (!($uname && $udom)) {
10038: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
10039: if (!$symbparm) { $symbparm=$cursymb; }
10040: } else {
10041: $courseid=$env{'request.course.id'};
10042: }
10043: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
10044: my $rest;
10045: if (defined($therest[0])) {
10046: $rest=join('.',@therest);
10047: } else {
10048: $rest='';
10049: }
10050:
10051: my $qualifierrest=$qualifier;
10052: if ($rest) { $qualifierrest.='.'.$rest; }
10053: my $spacequalifierrest=$space;
10054: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
10055: if ($realm eq 'user') {
10056: # --------------------------------------------------------------- user.resource
10057: if ($space eq 'resource') {
10058: if ( (defined($Apache::lonhomework::parsing_a_problem)
10059: || defined($Apache::lonhomework::parsing_a_task))
10060: &&
10061: ($symbparm eq &symbread()) ) {
10062: # if we are in the middle of processing the resource the
10063: # get the value we are planning on committing
10064: if (defined($Apache::lonhomework::results{$qualifierrest})) {
10065: return $Apache::lonhomework::results{$qualifierrest};
10066: } else {
10067: return $Apache::lonhomework::history{$qualifierrest};
10068: }
10069: } else {
10070: my %restored;
10071: if ($publicuser || $env{'request.state'} eq 'construct') {
10072: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
10073: } else {
10074: %restored=&restore($symbparm,$courseid,$udom,$uname);
10075: }
10076: return $restored{$qualifierrest};
10077: }
10078: # ----------------------------------------------------------------- user.access
10079: } elsif ($space eq 'access') {
10080: # FIXME - not supporting calls for a specific user
10081: return &allowed($qualifier,$rest);
10082: # ------------------------------------------ user.preferences, user.environment
10083: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
10084: if (($uname eq $env{'user.name'}) &&
10085: ($udom eq $env{'user.domain'})) {
10086: return $env{join('.',('environment',$qualifierrest))};
10087: } else {
10088: my %returnhash;
10089: if (!$publicuser) {
10090: %returnhash=&userenvironment($udom,$uname,
10091: $qualifierrest);
10092: }
10093: return $returnhash{$qualifierrest};
10094: }
10095: # ----------------------------------------------------------------- user.course
10096: } elsif ($space eq 'course') {
10097: # FIXME - not supporting calls for a specific user
10098: return $env{join('.',('request.course',$qualifier))};
10099: # ------------------------------------------------------------------- user.role
10100: } elsif ($space eq 'role') {
10101: # FIXME - not supporting calls for a specific user
10102: my ($role,$where)=split(/\./,$env{'request.role'});
10103: if ($qualifier eq 'value') {
10104: return $role;
10105: } elsif ($qualifier eq 'extent') {
10106: return $where;
10107: }
10108: # ----------------------------------------------------------------- user.domain
10109: } elsif ($space eq 'domain') {
10110: return $udom;
10111: # ------------------------------------------------------------------- user.name
10112: } elsif ($space eq 'name') {
10113: return $uname;
10114: # ---------------------------------------------------- Any other user namespace
10115: } else {
10116: my %reply;
10117: if (!$publicuser) {
10118: %reply=&get($space,[$qualifierrest],$udom,$uname);
10119: }
10120: return $reply{$qualifierrest};
10121: }
10122: } elsif ($realm eq 'query') {
10123: # ---------------------------------------------- pull stuff out of query string
10124: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
10125: [$spacequalifierrest]);
10126: return $env{'form.'.$spacequalifierrest};
10127: } elsif ($realm eq 'request') {
10128: # ------------------------------------------------------------- request.browser
10129: if ($space eq 'browser') {
10130: return $env{'browser.'.$qualifier};
10131: # ------------------------------------------------------------ request.filename
10132: } else {
10133: return $env{'request.'.$spacequalifierrest};
10134: }
10135: } elsif ($realm eq 'course') {
10136: # ---------------------------------------------------------- course.description
10137: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
10138: } elsif ($realm eq 'resource') {
10139:
10140: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
10141: if (!$symbparm) { $symbparm=&symbread(); }
10142: }
10143:
10144: if ($qualifier eq '') {
10145: if ($space eq 'title') {
10146: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
10147: return &gettitle($symbparm);
10148: }
10149:
10150: if ($space eq 'map') {
10151: my ($map) = &decode_symb($symbparm);
10152: return &symbread($map);
10153: }
10154: if ($space eq 'maptitle') {
10155: my ($map) = &decode_symb($symbparm);
10156: return &gettitle($map);
10157: }
10158: if ($space eq 'filename') {
10159: if ($symbparm) {
10160: return &clutter((&decode_symb($symbparm))[2]);
10161: }
10162: return &hreflocation('',$env{'request.filename'});
10163: }
10164:
10165: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
10166: if ($space eq 'visibleparts') {
10167: my $navmap = Apache::lonnavmaps::navmap->new();
10168: my $item;
10169: if (ref($navmap)) {
10170: my $res = $navmap->getBySymb($symbparm);
10171: my $parts = $res->parts();
10172: if (ref($parts) eq 'ARRAY') {
10173: $item = join(',',@{$parts});
10174: }
10175: undef($navmap);
10176: }
10177: return $item;
10178: }
10179: }
10180: }
10181:
10182: my ($section, $group, @groups);
10183: my ($courselevelm,$courselevel);
10184: if (($courseid eq '') && ($cid)) {
10185: $courseid = $cid;
10186: }
10187: if (($symbparm && $courseid) &&
10188: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
10189:
10190: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
10191:
10192: # ----------------------------------------------------- Cascading lookup scheme
10193: my $symbp=$symbparm;
10194: my $mapp=&deversion((&decode_symb($symbp))[0]);
10195:
10196: my $symbparm=$symbp.'.'.$spacequalifierrest;
10197: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
10198:
10199: if (($env{'user.name'} eq $uname) &&
10200: ($env{'user.domain'} eq $udom)) {
10201: $section=$env{'request.course.sec'};
10202: @groups = split(/:/,$env{'request.course.groups'});
10203: @groups=&sort_course_groups($courseid,@groups);
10204: } else {
10205: if (! defined($usection)) {
10206: $section=&getsection($udom,$uname,$courseid);
10207: } else {
10208: $section = $usection;
10209: }
10210: @groups = &get_users_groups($udom,$uname,$courseid);
10211: }
10212:
10213: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
10214: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
10215: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
10216:
10217: $courselevel=$courseid.'.'.$spacequalifierrest;
10218: my $courselevelr=$courseid.'.'.$symbparm;
10219: $courselevelm=$courseid.'.'.$mapparm;
10220:
10221: # ----------------------------------------------------------- first, check user
10222:
10223: my $userreply=&resdata($uname,$udom,'user',
10224: ([$courselevelr,'resource'],
10225: [$courselevelm,'map' ],
10226: [$courselevel, 'course' ]));
10227: if (defined($userreply)) { return &get_reply($userreply); }
10228:
10229: # ------------------------------------------------ second, check some of course
10230: my $coursereply;
10231: if (@groups > 0) {
10232: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
10233: $mapparm,$spacequalifierrest);
10234: if (defined($coursereply)) { return &get_reply($coursereply); }
10235: }
10236:
10237: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10238: $env{'course.'.$courseid.'.domain'},
10239: 'course',
10240: ([$seclevelr, 'resource'],
10241: [$seclevelm, 'map' ],
10242: [$seclevel, 'course' ],
10243: [$courselevelr,'resource']));
10244: if (defined($coursereply)) { return &get_reply($coursereply); }
10245:
10246: # ------------------------------------------------------ third, check map parms
10247: my %parmhash=();
10248: my $thisparm='';
10249: if (tie(%parmhash,'GDBM_File',
10250: $env{'request.course.fn'}.'_parms.db',
10251: &GDBM_READER(),0640)) {
10252: $thisparm=$parmhash{$symbparm};
10253: untie(%parmhash);
10254: }
10255: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
10256: }
10257: # ------------------------------------------ fourth, look in resource metadata
10258:
10259: $spacequalifierrest=~s/\./\_/;
10260: my $filename;
10261: if (!$symbparm) { $symbparm=&symbread(); }
10262: if ($symbparm) {
10263: $filename=(&decode_symb($symbparm))[2];
10264: } else {
10265: $filename=$env{'request.filename'};
10266: }
10267: my $metadata=&metadata($filename,$spacequalifierrest);
10268: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10269: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
10270: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10271:
10272: # ---------------------------------------------- fourth, look in rest of course
10273: if ($symbparm && defined($courseid) &&
10274: $courseid eq $env{'request.course.id'}) {
10275: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10276: $env{'course.'.$courseid.'.domain'},
10277: 'course',
10278: ([$courselevelm,'map' ],
10279: [$courselevel, 'course']));
10280: if (defined($coursereply)) { return &get_reply($coursereply); }
10281: }
10282: # ------------------------------------------------------------------ Cascade up
10283: unless ($space eq '0') {
10284: my @parts=split(/_/,$space);
10285: my $id=pop(@parts);
10286: my $part=join('_',@parts);
10287: if ($part eq '') { $part='0'; }
10288: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
10289: $symbparm,$udom,$uname,$section,1);
10290: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
10291: }
10292: if ($recurse) { return undef; }
10293: my $pack_def=&packages_tab_default($filename,$varname);
10294: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
10295: # ---------------------------------------------------- Any other user namespace
10296: } elsif ($realm eq 'environment') {
10297: # ----------------------------------------------------------------- environment
10298: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
10299: return $env{'environment.'.$spacequalifierrest};
10300: } else {
10301: if ($uname eq 'anonymous' && $udom eq '') {
10302: return '';
10303: }
10304: my %returnhash=&userenvironment($udom,$uname,
10305: $spacequalifierrest);
10306: return $returnhash{$spacequalifierrest};
10307: }
10308: } elsif ($realm eq 'system') {
10309: # ----------------------------------------------------------------- system.time
10310: if ($space eq 'time') {
10311: return time;
10312: }
10313: } elsif ($realm eq 'server') {
10314: # ----------------------------------------------------------------- system.time
10315: if ($space eq 'name') {
10316: return $ENV{'SERVER_NAME'};
10317: }
10318: }
10319: return '';
10320: }
10321:
10322: sub get_reply {
10323: my ($reply_value) = @_;
10324: if (ref($reply_value) eq 'ARRAY') {
10325: if (wantarray) {
10326: return @$reply_value;
10327: }
10328: return $reply_value->[0];
10329: } else {
10330: return $reply_value;
10331: }
10332: }
10333:
10334: sub check_group_parms {
10335: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
10336: my @groupitems = ();
10337: my $resultitem;
10338: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
10339: foreach my $group (@{$groups}) {
10340: foreach my $level (@levels) {
10341: my $item = $courseid.'.['.$group.'].'.$level->[0];
10342: push(@groupitems,[$item,$level->[1]]);
10343: }
10344: }
10345: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10346: $env{'course.'.$courseid.'.domain'},
10347: 'course',@groupitems);
10348: return $coursereply;
10349: }
10350:
10351: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10352: my ($courseid,@groups) = @_;
10353: @groups = sort(@groups);
10354: return @groups;
10355: }
10356:
10357: sub packages_tab_default {
10358: my ($uri,$varname)=@_;
10359: my (undef,$part,$name)=split(/\./,$varname);
10360:
10361: my (@extension,@specifics,$do_default);
10362: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10363: my ($pack_type,$pack_part)=split(/_/,$package,2);
10364: if ($pack_type eq 'default') {
10365: $do_default=1;
10366: } elsif ($pack_type eq 'extension') {
10367: push(@extension,[$package,$pack_type,$pack_part]);
10368: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10369: # only look at packages defaults for packages that this id is
10370: push(@specifics,[$package,$pack_type,$pack_part]);
10371: }
10372: }
10373: # first look for a package that matches the requested part id
10374: foreach my $package (@specifics) {
10375: my (undef,$pack_type,$pack_part)=@{$package};
10376: next if ($pack_part ne $part);
10377: if (defined($packagetab{"$pack_type&$name&default"})) {
10378: return $packagetab{"$pack_type&$name&default"};
10379: }
10380: }
10381: # look for any possible matching non extension_ package
10382: foreach my $package (@specifics) {
10383: my (undef,$pack_type,$pack_part)=@{$package};
10384: if (defined($packagetab{"$pack_type&$name&default"})) {
10385: return $packagetab{"$pack_type&$name&default"};
10386: }
10387: if ($pack_type eq 'part') { $pack_part='0'; }
10388: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10389: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10390: }
10391: }
10392: # look for any posible extension_ match
10393: foreach my $package (@extension) {
10394: my ($package,$pack_type)=@{$package};
10395: if (defined($packagetab{"$pack_type&$name&default"})) {
10396: return $packagetab{"$pack_type&$name&default"};
10397: }
10398: if (defined($packagetab{$package."&$name&default"})) {
10399: return $packagetab{$package."&$name&default"};
10400: }
10401: }
10402: # look for a global default setting
10403: if ($do_default && defined($packagetab{"default&$name&default"})) {
10404: return $packagetab{"default&$name&default"};
10405: }
10406: return undef;
10407: }
10408:
10409: sub add_prefix_and_part {
10410: my ($prefix,$part)=@_;
10411: my $keyroot;
10412: if (defined($prefix) && $prefix !~ /^__/) {
10413: # prefix that has a part already
10414: $keyroot=$prefix;
10415: } elsif (defined($prefix)) {
10416: # prefix that is missing a part
10417: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10418: } else {
10419: # no prefix at all
10420: if (defined($part)) { $keyroot='_'.$part; }
10421: }
10422: return $keyroot;
10423: }
10424:
10425: # ---------------------------------------------------------------- Get metadata
10426:
10427: my %metaentry;
10428: my %importedpartids;
10429: sub metadata {
10430: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10431: $uri=&declutter($uri);
10432: # if it is a non metadata possible uri return quickly
10433: if (($uri eq '') ||
10434: (($uri =~ m|^/*adm/|) &&
10435: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
10436: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10437: return undef;
10438: }
10439: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
10440: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10441: return undef;
10442: }
10443: my $filename=$uri;
10444: $uri=~s/\.meta$//;
10445: #
10446: # Is the metadata already cached?
10447: # Look at timestamp of caching
10448: # Everything is cached by the main uri, libraries are never directly cached
10449: #
10450: if (!defined($liburi)) {
10451: my ($result,$cached)=&is_cached_new('meta',$uri);
10452: if (defined($cached)) { return $result->{':'.$what}; }
10453: }
10454: {
10455: # Imported parts would go here
10456: my %importedids=();
10457: my @origfileimportpartids=();
10458: my $importedparts=0;
10459: #
10460: # Is this a recursive call for a library?
10461: #
10462: # if (! exists($metacache{$uri})) {
10463: # $metacache{$uri}={};
10464: # }
10465: my $cachetime = 60*60;
10466: if ($liburi) {
10467: $liburi=&declutter($liburi);
10468: $filename=$liburi;
10469: } else {
10470: &devalidate_cache_new('meta',$uri);
10471: undef(%metaentry);
10472: }
10473: my %metathesekeys=();
10474: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10475: my $metastring;
10476: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10477: my $which = &hreflocation('','/'.($liburi || $uri));
10478: $metastring =
10479: &Apache::lonnet::ssi_body($which,
10480: ('grade_target' => 'meta'));
10481: $cachetime = 1; # only want this cached in the child not long term
10482: } elsif (($uri !~ m -^(editupload)/-) &&
10483: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10484: my $file=&filelocation('',&clutter($filename));
10485: #push(@{$metaentry{$uri.'.file'}},$file);
10486: $metastring=&getfile($file);
10487: }
10488: my $parser=HTML::LCParser->new(\$metastring);
10489: my $token;
10490: undef %metathesekeys;
10491: while ($token=$parser->get_token) {
10492: if ($token->[0] eq 'S') {
10493: if (defined($token->[2]->{'package'})) {
10494: #
10495: # This is a package - get package info
10496: #
10497: my $package=$token->[2]->{'package'};
10498: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10499: if (defined($token->[2]->{'id'})) {
10500: $keyroot.='_'.$token->[2]->{'id'};
10501: }
10502: if ($metaentry{':packages'}) {
10503: $metaentry{':packages'}.=','.$package.$keyroot;
10504: } else {
10505: $metaentry{':packages'}=$package.$keyroot;
10506: }
10507: foreach my $pack_entry (keys(%packagetab)) {
10508: my $part=$keyroot;
10509: $part=~s/^\_//;
10510: if ($pack_entry=~/^\Q$package\E\&/ ||
10511: $pack_entry=~/^\Q$package\E_0\&/) {
10512: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10513: # ignore package.tab specified default values
10514: # here &package_tab_default() will fetch those
10515: if ($subp eq 'default') { next; }
10516: my $value=$packagetab{$pack_entry};
10517: my $unikey;
10518: if ($pack =~ /_0$/) {
10519: $unikey='parameter_0_'.$name;
10520: $part=0;
10521: } else {
10522: $unikey='parameter'.$keyroot.'_'.$name;
10523: }
10524: if ($subp eq 'display') {
10525: $value.=' [Part: '.$part.']';
10526: }
10527: $metaentry{':'.$unikey.'.part'}=$part;
10528: $metathesekeys{$unikey}=1;
10529: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10530: $metaentry{':'.$unikey.'.'.$subp}=$value;
10531: }
10532: if (defined($metaentry{':'.$unikey.'.default'})) {
10533: $metaentry{':'.$unikey}=
10534: $metaentry{':'.$unikey.'.default'};
10535: }
10536: }
10537: }
10538: } else {
10539: #
10540: # This is not a package - some other kind of start tag
10541: #
10542: my $entry=$token->[1];
10543: my $unikey='';
10544:
10545: if ($entry eq 'import') {
10546: #
10547: # Importing a library here
10548: #
10549: my $location=$parser->get_text('/import');
10550: my $dir=$filename;
10551: $dir=~s|[^/]*$||;
10552: $location=&filelocation($dir,$location);
10553:
10554: my $importmode=$token->[2]->{'importmode'};
10555: if ($importmode eq 'problem') {
10556: # Import as problem/response
10557: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10558: } elsif ($importmode eq 'part') {
10559: # Import as part(s)
10560: $importedparts=1;
10561: # We need to get the original file and the imported file to get the part order correct
10562: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10563: # Load and inspect original file
10564: if ($#origfileimportpartids<0) {
10565: undef(%importedpartids);
10566: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10567: my $origfile=&getfile($origfilelocation);
10568: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10569: }
10570:
10571: # Load and inspect imported file
10572: my $impfile=&getfile($location);
10573: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10574: if ($#impfilepartids>=0) {
10575: # This problem had parts
10576: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10577: } else {
10578: # Importing by turning a single problem into a problem part
10579: # It gets the import-tags ID as part-ID
10580: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10581: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10582: }
10583: } else {
10584: # Normal import
10585: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10586: if (defined($token->[2]->{'id'})) {
10587: $unikey.='_'.$token->[2]->{'id'};
10588: }
10589: }
10590:
10591: if ($depthcount<20) {
10592: my $metadata =
10593: &metadata($uri,'keys', $location,$unikey,
10594: $depthcount+1);
10595: foreach my $meta (split(',',$metadata)) {
10596: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10597: $metathesekeys{$meta}=1;
10598: }
10599:
10600: }
10601: } else {
10602: #
10603: # Not importing, some other kind of non-package, non-library start tag
10604: #
10605: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10606: if (defined($token->[2]->{'id'})) {
10607: $unikey.='_'.$token->[2]->{'id'};
10608: }
10609: if (defined($token->[2]->{'name'})) {
10610: $unikey.='_'.$token->[2]->{'name'};
10611: }
10612: $metathesekeys{$unikey}=1;
10613: foreach my $param (@{$token->[3]}) {
10614: $metaentry{':'.$unikey.'.'.$param} =
10615: $token->[2]->{$param};
10616: }
10617: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10618: my $default=$metaentry{':'.$unikey.'.default'};
10619: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10620: # only ws inside the tag, and not in default, so use default
10621: # as value
10622: $metaentry{':'.$unikey}=$default;
10623: } elsif ( $internaltext =~ /\S/ ) {
10624: # something interesting inside the tag
10625: $metaentry{':'.$unikey}=$internaltext;
10626: } else {
10627: # no interesting values, don't set a default
10628: }
10629: # end of not-a-package not-a-library import
10630: }
10631: # end of not-a-package start tag
10632: }
10633: # the next is the end of "start tag"
10634: }
10635: }
10636: my ($extension) = ($uri =~ /\.(\w+)$/);
10637: $extension = lc($extension);
10638: if ($extension eq 'htm') { $extension='html'; }
10639:
10640: foreach my $key (keys(%packagetab)) {
10641: #no specific packages #how's our extension
10642: if ($key!~/^extension_\Q$extension\E&/) { next; }
10643: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10644: \%metathesekeys);
10645: }
10646:
10647: if (!exists($metaentry{':packages'})
10648: || $packagetab{"import_defaults&extension_$extension"}) {
10649: foreach my $key (keys(%packagetab)) {
10650: #no specific packages well let's get default then
10651: if ($key!~/^default&/) { next; }
10652: &metadata_create_package_def($uri,$key,'default',
10653: \%metathesekeys);
10654: }
10655: }
10656: # are there custom rights to evaluate
10657: if ($metaentry{':copyright'} eq 'custom') {
10658:
10659: #
10660: # Importing a rights file here
10661: #
10662: unless ($depthcount) {
10663: my $location=$metaentry{':customdistributionfile'};
10664: my $dir=$filename;
10665: $dir=~s|[^/]*$||;
10666: $location=&filelocation($dir,$location);
10667: my $rights_metadata =
10668: &metadata($uri,'keys',$location,'_rights',
10669: $depthcount+1);
10670: foreach my $rights (split(',',$rights_metadata)) {
10671: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10672: $metathesekeys{$rights}=1;
10673: }
10674: }
10675: }
10676: # uniqifiy package listing
10677: my %seen;
10678: my @uniq_packages =
10679: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10680: $metaentry{':packages'} = join(',',@uniq_packages);
10681:
10682: if ($importedparts) {
10683: # We had imported parts and need to rebuild partorder
10684: $metaentry{':partorder'}='';
10685: $metathesekeys{'partorder'}=1;
10686: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10687: if ($origfileimportpartids[$index] eq 'part') {
10688: # original part, part of the problem
10689: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10690: } else {
10691: # we have imported parts at this position
10692: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10693: }
10694: }
10695: $metaentry{':partorder'}=~s/^\,//;
10696: }
10697:
10698: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10699: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10700: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
10701: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10702: # this is the end of "was not already recently cached
10703: }
10704: return $metaentry{':'.$what};
10705: }
10706:
10707: sub metadata_create_package_def {
10708: my ($uri,$key,$package,$metathesekeys)=@_;
10709: my ($pack,$name,$subp)=split(/\&/,$key);
10710: if ($subp eq 'default') { next; }
10711:
10712: if (defined($metaentry{':packages'})) {
10713: $metaentry{':packages'}.=','.$package;
10714: } else {
10715: $metaentry{':packages'}=$package;
10716: }
10717: my $value=$packagetab{$key};
10718: my $unikey;
10719: $unikey='parameter_0_'.$name;
10720: $metaentry{':'.$unikey.'.part'}=0;
10721: $$metathesekeys{$unikey}=1;
10722: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10723: $metaentry{':'.$unikey.'.'.$subp}=$value;
10724: }
10725: if (defined($metaentry{':'.$unikey.'.default'})) {
10726: $metaentry{':'.$unikey}=
10727: $metaentry{':'.$unikey.'.default'};
10728: }
10729: }
10730:
10731: sub metadata_generate_part0 {
10732: my ($metadata,$metacache,$uri) = @_;
10733: my %allnames;
10734: foreach my $metakey (keys(%$metadata)) {
10735: if ($metakey=~/^parameter\_(.*)/) {
10736: my $part=$$metacache{':'.$metakey.'.part'};
10737: my $name=$$metacache{':'.$metakey.'.name'};
10738: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10739: $allnames{$name}=$part;
10740: }
10741: }
10742: }
10743: foreach my $name (keys(%allnames)) {
10744: $$metadata{"parameter_0_$name"}=1;
10745: my $key=":parameter_0_$name";
10746: $$metacache{"$key.part"}='0';
10747: $$metacache{"$key.name"}=$name;
10748: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10749: $allnames{$name}.'_'.$name.
10750: '.type'};
10751: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10752: '.display'};
10753: my $expr='[Part: '.$allnames{$name}.']';
10754: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10755: $$metacache{"$key.display"}=$olddis;
10756: }
10757: }
10758:
10759: # ------------------------------------------------------ Devalidate title cache
10760:
10761: sub devalidate_title_cache {
10762: my ($url)=@_;
10763: if (!$env{'request.course.id'}) { return; }
10764: my $symb=&symbread($url);
10765: if (!$symb) { return; }
10766: my $key=$env{'request.course.id'}."\0".$symb;
10767: &devalidate_cache_new('title',$key);
10768: }
10769:
10770: # ------------------------------------------------- Get the title of a course
10771:
10772: sub current_course_title {
10773: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10774: }
10775: # ------------------------------------------------- Get the title of a resource
10776:
10777: sub gettitle {
10778: my $urlsymb=shift;
10779: my $symb=&symbread($urlsymb);
10780: if ($symb) {
10781: my $key=$env{'request.course.id'}."\0".$symb;
10782: my ($result,$cached)=&is_cached_new('title',$key);
10783: if (defined($cached)) {
10784: return $result;
10785: }
10786: my ($map,$resid,$url)=&decode_symb($symb);
10787: my $title='';
10788: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10789: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10790: } else {
10791: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10792: &GDBM_READER(),0640)) {
10793: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10794: $title=$bighash{'title_'.$mapid.'.'.$resid};
10795: untie(%bighash);
10796: }
10797: }
10798: $title=~s/\&colon\;/\:/gs;
10799: if ($title) {
10800: # Remember both $symb and $title for dynamic metadata
10801: $accesshash{$symb.'___crstitle'}=$title;
10802: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10803: # Cache this title and then return it
10804: return &do_cache_new('title',$key,$title,600);
10805: }
10806: $urlsymb=$url;
10807: }
10808: my $title=&metadata($urlsymb,'title');
10809: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10810: return $title;
10811: }
10812:
10813: sub get_slot {
10814: my ($which,$cnum,$cdom)=@_;
10815: if (!$cnum || !$cdom) {
10816: (undef,my $courseid)=&whichuser();
10817: $cdom=$env{'course.'.$courseid.'.domain'};
10818: $cnum=$env{'course.'.$courseid.'.num'};
10819: }
10820: my $key=join("\0",'slots',$cdom,$cnum,$which);
10821: my %slotinfo;
10822: if (exists($remembered{$key})) {
10823: $slotinfo{$which} = $remembered{$key};
10824: } else {
10825: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10826: &Apache::lonhomework::showhash(%slotinfo);
10827: my ($tmp)=keys(%slotinfo);
10828: if ($tmp=~/^error:/) { return (); }
10829: $remembered{$key} = $slotinfo{$which};
10830: }
10831: if (ref($slotinfo{$which}) eq 'HASH') {
10832: return %{$slotinfo{$which}};
10833: }
10834: return $slotinfo{$which};
10835: }
10836:
10837: sub get_reservable_slots {
10838: my ($cnum,$cdom,$uname,$udom) = @_;
10839: my $now = time;
10840: my $reservable_info;
10841: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10842: if (exists($remembered{$key})) {
10843: $reservable_info = $remembered{$key};
10844: } else {
10845: my %resv;
10846: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10847: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10848: $reservable_info = \%resv;
10849: $remembered{$key} = $reservable_info;
10850: }
10851: return $reservable_info;
10852: }
10853:
10854: sub get_course_slots {
10855: my ($cnum,$cdom) = @_;
10856: my $hashid=$cnum.':'.$cdom;
10857: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10858: if (defined($cached)) {
10859: if (ref($result) eq 'HASH') {
10860: return %{$result};
10861: }
10862: } else {
10863: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10864: my ($tmp) = keys(%slots);
10865: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10866: &do_cache_new('allslots',$hashid,\%slots,600);
10867: return %slots;
10868: }
10869: }
10870: return;
10871: }
10872:
10873: sub devalidate_slots_cache {
10874: my ($cnum,$cdom)=@_;
10875: my $hashid=$cnum.':'.$cdom;
10876: &devalidate_cache_new('allslots',$hashid);
10877: }
10878:
10879: sub get_coursechange {
10880: my ($cdom,$cnum) = @_;
10881: if ($cdom eq '' || $cnum eq '') {
10882: return unless ($env{'request.course.id'});
10883: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10884: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10885: }
10886: my $hashid=$cdom.'_'.$cnum;
10887: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10888: if ((defined($cached)) && ($change ne '')) {
10889: return $change;
10890: } else {
10891: my %crshash;
10892: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10893: if ($crshash{'internal.contentchange'} eq '') {
10894: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10895: if ($change eq '') {
10896: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10897: $change = $crshash{'internal.created'};
10898: }
10899: } else {
10900: $change = $crshash{'internal.contentchange'};
10901: }
10902: my $cachetime = 600;
10903: &do_cache_new('crschange',$hashid,$change,$cachetime);
10904: }
10905: return $change;
10906: }
10907:
10908: sub devalidate_coursechange_cache {
10909: my ($cnum,$cdom)=@_;
10910: my $hashid=$cnum.':'.$cdom;
10911: &devalidate_cache_new('crschange',$hashid);
10912: }
10913:
10914: # ------------------------------------------------- Update symbolic store links
10915:
10916: sub symblist {
10917: my ($mapname,%newhash)=@_;
10918: $mapname=&deversion(&declutter($mapname));
10919: my %hash;
10920: if (($env{'request.course.fn'}) && (%newhash)) {
10921: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10922: &GDBM_WRCREAT(),0640)) {
10923: foreach my $url (keys(%newhash)) {
10924: next if ($url eq 'last_known'
10925: && $env{'form.no_update_last_known'});
10926: $hash{declutter($url)}=&encode_symb($mapname,
10927: $newhash{$url}->[1],
10928: $newhash{$url}->[0]);
10929: }
10930: if (untie(%hash)) {
10931: return 'ok';
10932: }
10933: }
10934: }
10935: return 'error';
10936: }
10937:
10938: # --------------------------------------------------------------- Verify a symb
10939:
10940: sub symbverify {
10941: my ($symb,$thisurl,$encstate)=@_;
10942: my $thisfn=$thisurl;
10943: $thisfn=&declutter($thisfn);
10944: # direct jump to resource in page or to a sequence - will construct own symbs
10945: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10946: # check URL part
10947: my ($map,$resid,$url)=&decode_symb($symb);
10948:
10949: unless ($url eq $thisfn) { return 0; }
10950:
10951: $symb=&symbclean($symb);
10952: $thisurl=&deversion($thisurl);
10953: $thisfn=&deversion($thisfn);
10954:
10955: my %bighash;
10956: my $okay=0;
10957:
10958: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10959: &GDBM_READER(),0640)) {
10960: my $noclutter;
10961: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10962: $thisurl =~ s/\?.+$//;
10963: if ($map =~ m{^uploaded/.+\.page$}) {
10964: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
10965: $thisurl =~ s{^\Qhttp://https://\E}{https://};
10966: $noclutter = 1;
10967: }
10968: }
10969: my $ids;
10970: if ($noclutter) {
10971: $ids=$bighash{'ids_'.$thisurl};
10972: } else {
10973: $ids=$bighash{'ids_'.&clutter($thisurl)};
10974: }
10975: unless ($ids) {
10976: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10977: $ids=$bighash{$idkey};
10978: }
10979: if ($ids) {
10980: # ------------------------------------------------------------------- Has ID(s)
10981: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10982: $symb =~ s/\?.+$//;
10983: }
10984: foreach my $id (split(/\,/,$ids)) {
10985: my ($mapid,$resid)=split(/\./,$id);
10986: if (
10987: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10988: eq $symb) {
10989: if (ref($encstate)) {
10990: $$encstate = $bighash{'encrypted_'.$id};
10991: }
10992: if (($env{'request.role.adv'}) ||
10993: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10994: ($thisurl eq '/adm/navmaps')) {
10995: $okay=1;
10996: last;
10997: }
10998: }
10999: }
11000: }
11001: untie(%bighash);
11002: }
11003: return $okay;
11004: }
11005:
11006: # --------------------------------------------------------------- Clean-up symb
11007:
11008: sub symbclean {
11009: my $symb=shift;
11010: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11011: # remove version from map
11012: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
11013:
11014: # remove version from URL
11015: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
11016:
11017: # remove wrapper
11018:
11019: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
11020: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
11021: return $symb;
11022: }
11023:
11024: # ---------------------------------------------- Split symb to find map and url
11025:
11026: sub encode_symb {
11027: my ($map,$resid,$url)=@_;
11028: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
11029: }
11030:
11031: sub decode_symb {
11032: my $symb=shift;
11033: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11034: my ($map,$resid,$url)=split(/___/,$symb);
11035: return (&fixversion($map),$resid,&fixversion($url));
11036: }
11037:
11038: sub fixversion {
11039: my $fn=shift;
11040: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
11041: my %bighash;
11042: my $uri=&clutter($fn);
11043: my $key=$env{'request.course.id'}.'_'.$uri;
11044: # is this cached?
11045: my ($result,$cached)=&is_cached_new('courseresversion',$key);
11046: if (defined($cached)) { return $result; }
11047: # unfortunately not cached, or expired
11048: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11049: &GDBM_READER(),0640)) {
11050: if ($bighash{'version_'.$uri}) {
11051: my $version=$bighash{'version_'.$uri};
11052: unless (($version eq 'mostrecent') ||
11053: ($version==&getversion($uri))) {
11054: $uri=~s/\.(\w+)$/\.$version\.$1/;
11055: }
11056: }
11057: untie %bighash;
11058: }
11059: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
11060: }
11061:
11062: sub deversion {
11063: my $url=shift;
11064: $url=~s/\.\d+\.(\w+)$/\.$1/;
11065: return $url;
11066: }
11067:
11068: # ------------------------------------------------------ Return symb list entry
11069:
11070: sub symbread {
11071: my ($thisfn,$donotrecurse)=@_;
11072: my $cache_str='request.symbread.cached.'.$thisfn;
11073: if (defined($env{$cache_str})) { return $env{$cache_str}; }
11074: # no filename provided? try from environment
11075: unless ($thisfn) {
11076: if ($env{'request.symb'}) {
11077: return $env{$cache_str}=&symbclean($env{'request.symb'});
11078: }
11079: $thisfn=$env{'request.filename'};
11080: }
11081: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11082: # is that filename actually a symb? Verify, clean, and return
11083: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
11084: if (&symbverify($thisfn,$1)) {
11085: return $env{$cache_str}=&symbclean($thisfn);
11086: }
11087: }
11088: $thisfn=declutter($thisfn);
11089: my %hash;
11090: my %bighash;
11091: my $syval='';
11092: if (($env{'request.course.fn'}) && ($thisfn)) {
11093: my $targetfn = $thisfn;
11094: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
11095: $targetfn = 'adm/wrapper/'.$thisfn;
11096: }
11097: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
11098: $targetfn=$1;
11099: }
11100: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11101: &GDBM_READER(),0640)) {
11102: $syval=$hash{$targetfn};
11103: untie(%hash);
11104: }
11105: # ---------------------------------------------------------- There was an entry
11106: if ($syval) {
11107: #unless ($syval=~/\_\d+$/) {
11108: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
11109: #&appenv({'request.ambiguous' => $thisfn});
11110: #return $env{$cache_str}='';
11111: #}
11112: #$syval.=$1;
11113: #}
11114: } else {
11115: # ------------------------------------------------------- Was not in symb table
11116: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11117: &GDBM_READER(),0640)) {
11118: # ---------------------------------------------- Get ID(s) for current resource
11119: my $ids=$bighash{'ids_'.&clutter($thisfn)};
11120: unless ($ids) {
11121: $ids=$bighash{'ids_/'.$thisfn};
11122: }
11123: unless ($ids) {
11124: # alias?
11125: $ids=$bighash{'mapalias_'.$thisfn};
11126: }
11127: if ($ids) {
11128: # ------------------------------------------------------------------- Has ID(s)
11129: my @possibilities=split(/\,/,$ids);
11130: if ($#possibilities==0) {
11131: # ----------------------------------------------- There is only one possibility
11132: my ($mapid,$resid)=split(/\./,$ids);
11133: $syval=&encode_symb($bighash{'map_id_'.$mapid},
11134: $resid,$thisfn);
11135: } elsif (!$donotrecurse) {
11136: # ------------------------------------------ There is more than one possibility
11137: my $realpossible=0;
11138: foreach my $id (@possibilities) {
11139: my $file=$bighash{'src_'.$id};
11140: if (&allowed('bre',$file)) {
11141: my ($mapid,$resid)=split(/\./,$id);
11142: if ($bighash{'map_type_'.$mapid} ne 'page') {
11143: $realpossible++;
11144: $syval=&encode_symb($bighash{'map_id_'.$mapid},
11145: $resid,$thisfn);
11146: }
11147: }
11148: }
11149: if ($realpossible!=1) { $syval=''; }
11150: } else {
11151: $syval='';
11152: }
11153: }
11154: untie(%bighash)
11155: }
11156: }
11157: if ($syval) {
11158: return $env{$cache_str}=$syval;
11159: }
11160: }
11161: &appenv({'request.ambiguous' => $thisfn});
11162: return $env{$cache_str}='';
11163: }
11164:
11165: # ---------------------------------------------------------- Return random seed
11166:
11167: sub numval {
11168: my $txt=shift;
11169: $txt=~tr/A-J/0-9/;
11170: $txt=~tr/a-j/0-9/;
11171: $txt=~tr/K-T/0-9/;
11172: $txt=~tr/k-t/0-9/;
11173: $txt=~tr/U-Z/0-5/;
11174: $txt=~tr/u-z/0-5/;
11175: $txt=~s/\D//g;
11176: if ($_64bit) { if ($txt > 2**32) { return -1; } }
11177: return int($txt);
11178: }
11179:
11180: sub numval2 {
11181: my $txt=shift;
11182: $txt=~tr/A-J/0-9/;
11183: $txt=~tr/a-j/0-9/;
11184: $txt=~tr/K-T/0-9/;
11185: $txt=~tr/k-t/0-9/;
11186: $txt=~tr/U-Z/0-5/;
11187: $txt=~tr/u-z/0-5/;
11188: $txt=~s/\D//g;
11189: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11190: my $total;
11191: foreach my $val (@txts) { $total+=$val; }
11192: if ($_64bit) { if ($total > 2**32) { return -1; } }
11193: return int($total);
11194: }
11195:
11196: sub numval3 {
11197: use integer;
11198: my $txt=shift;
11199: $txt=~tr/A-J/0-9/;
11200: $txt=~tr/a-j/0-9/;
11201: $txt=~tr/K-T/0-9/;
11202: $txt=~tr/k-t/0-9/;
11203: $txt=~tr/U-Z/0-5/;
11204: $txt=~tr/u-z/0-5/;
11205: $txt=~s/\D//g;
11206: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11207: my $total;
11208: foreach my $val (@txts) { $total+=$val; }
11209: if ($_64bit) { $total=(($total<<32)>>32); }
11210: return $total;
11211: }
11212:
11213: sub digest {
11214: my ($data)=@_;
11215: my $digest=&Digest::MD5::md5($data);
11216: my ($a,$b,$c,$d)=unpack("iiii",$digest);
11217: my ($e,$f);
11218: {
11219: use integer;
11220: $e=($a+$b);
11221: $f=($c+$d);
11222: if ($_64bit) {
11223: $e=(($e<<32)>>32);
11224: $f=(($f<<32)>>32);
11225: }
11226: }
11227: if (wantarray) {
11228: return ($e,$f);
11229: } else {
11230: my $g;
11231: {
11232: use integer;
11233: $g=($e+$f);
11234: if ($_64bit) {
11235: $g=(($g<<32)>>32);
11236: }
11237: }
11238: return $g;
11239: }
11240: }
11241:
11242: sub latest_rnd_algorithm_id {
11243: return '64bit5';
11244: }
11245:
11246: sub get_rand_alg {
11247: my ($courseid)=@_;
11248: if (!$courseid) { $courseid=(&whichuser())[1]; }
11249: if ($courseid) {
11250: return $env{"course.$courseid.rndseed"};
11251: }
11252: return &latest_rnd_algorithm_id();
11253: }
11254:
11255: sub validCODE {
11256: my ($CODE)=@_;
11257: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
11258: return 0;
11259: }
11260:
11261: sub getCODE {
11262: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
11263: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
11264: defined($Apache::lonhomework::parsing_a_task) ) &&
11265: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
11266: return $Apache::lonhomework::history{'resource.CODE'};
11267: }
11268: return undef;
11269: }
11270: #
11271: # Determines the random seed for a specific context:
11272: #
11273: # parameters:
11274: # symb - in course context the symb for the seed.
11275: # course_id - The course id of the form domain_coursenum.
11276: # domain - Domain for the user.
11277: # course - Course for the user.
11278: # cenv - environment of the course.
11279: #
11280: # NOTE:
11281: # All parameters are picked out of the environment if missing
11282: # or not defined.
11283: # If a symb cannot be determined the current time is used instead.
11284: #
11285: # For a given well defined symb, courside, domain, username,
11286: # and course environment, the seed is reproducible.
11287: #
11288: sub rndseed {
11289: my ($symb,$courseid,$domain,$username, $cenv)=@_;
11290: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
11291: if (!defined($symb)) {
11292: unless ($symb=$wsymb) { return time; }
11293: }
11294: if (!defined $courseid) {
11295: $courseid=$wcourseid;
11296: }
11297: if (!defined $domain) { $domain=$wdomain; }
11298: if (!defined $username) { $username=$wusername }
11299:
11300: my $which;
11301: if (defined($cenv->{'rndseed'})) {
11302: $which = $cenv->{'rndseed'};
11303: } else {
11304: $which =&get_rand_alg($courseid);
11305: }
11306: if (defined(&getCODE())) {
11307:
11308: if ($which eq '64bit5') {
11309: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
11310: } elsif ($which eq '64bit4') {
11311: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
11312: } else {
11313: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
11314: }
11315: } elsif ($which eq '64bit5') {
11316: return &rndseed_64bit5($symb,$courseid,$domain,$username);
11317: } elsif ($which eq '64bit4') {
11318: return &rndseed_64bit4($symb,$courseid,$domain,$username);
11319: } elsif ($which eq '64bit3') {
11320: return &rndseed_64bit3($symb,$courseid,$domain,$username);
11321: } elsif ($which eq '64bit2') {
11322: return &rndseed_64bit2($symb,$courseid,$domain,$username);
11323: } elsif ($which eq '64bit') {
11324: return &rndseed_64bit($symb,$courseid,$domain,$username);
11325: }
11326: return &rndseed_32bit($symb,$courseid,$domain,$username);
11327: }
11328:
11329: sub rndseed_32bit {
11330: my ($symb,$courseid,$domain,$username)=@_;
11331: {
11332: use integer;
11333: my $symbchck=unpack("%32C*",$symb) << 27;
11334: my $symbseed=numval($symb) << 22;
11335: my $namechck=unpack("%32C*",$username) << 17;
11336: my $nameseed=numval($username) << 12;
11337: my $domainseed=unpack("%32C*",$domain) << 7;
11338: my $courseseed=unpack("%32C*",$courseid);
11339: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
11340: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11341: #&logthis("rndseed :$num:$symb");
11342: if ($_64bit) { $num=(($num<<32)>>32); }
11343: return $num;
11344: }
11345: }
11346:
11347: sub rndseed_64bit {
11348: my ($symb,$courseid,$domain,$username)=@_;
11349: {
11350: use integer;
11351: my $symbchck=unpack("%32S*",$symb) << 21;
11352: my $symbseed=numval($symb) << 10;
11353: my $namechck=unpack("%32S*",$username);
11354:
11355: my $nameseed=numval($username) << 21;
11356: my $domainseed=unpack("%32S*",$domain) << 10;
11357: my $courseseed=unpack("%32S*",$courseid);
11358:
11359: my $num1=$symbchck+$symbseed+$namechck;
11360: my $num2=$nameseed+$domainseed+$courseseed;
11361: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11362: #&logthis("rndseed :$num:$symb");
11363: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11364: return "$num1,$num2";
11365: }
11366: }
11367:
11368: sub rndseed_64bit2 {
11369: my ($symb,$courseid,$domain,$username)=@_;
11370: {
11371: use integer;
11372: # strings need to be an even # of cahracters long, it it is odd the
11373: # last characters gets thrown away
11374: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11375: my $symbseed=numval($symb) << 10;
11376: my $namechck=unpack("%32S*",$username.' ');
11377:
11378: my $nameseed=numval($username) << 21;
11379: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11380: my $courseseed=unpack("%32S*",$courseid.' ');
11381:
11382: my $num1=$symbchck+$symbseed+$namechck;
11383: my $num2=$nameseed+$domainseed+$courseseed;
11384: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11385: #&logthis("rndseed :$num:$symb");
11386: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11387: return "$num1,$num2";
11388: }
11389: }
11390:
11391: sub rndseed_64bit3 {
11392: my ($symb,$courseid,$domain,$username)=@_;
11393: {
11394: use integer;
11395: # strings need to be an even # of cahracters long, it it is odd the
11396: # last characters gets thrown away
11397: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11398: my $symbseed=numval2($symb) << 10;
11399: my $namechck=unpack("%32S*",$username.' ');
11400:
11401: my $nameseed=numval2($username) << 21;
11402: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11403: my $courseseed=unpack("%32S*",$courseid.' ');
11404:
11405: my $num1=$symbchck+$symbseed+$namechck;
11406: my $num2=$nameseed+$domainseed+$courseseed;
11407: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11408: #&logthis("rndseed :$num1:$num2:$_64bit");
11409: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11410:
11411: return "$num1:$num2";
11412: }
11413: }
11414:
11415: sub rndseed_64bit4 {
11416: my ($symb,$courseid,$domain,$username)=@_;
11417: {
11418: use integer;
11419: # strings need to be an even # of cahracters long, it it is odd the
11420: # last characters gets thrown away
11421: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11422: my $symbseed=numval3($symb) << 10;
11423: my $namechck=unpack("%32S*",$username.' ');
11424:
11425: my $nameseed=numval3($username) << 21;
11426: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11427: my $courseseed=unpack("%32S*",$courseid.' ');
11428:
11429: my $num1=$symbchck+$symbseed+$namechck;
11430: my $num2=$nameseed+$domainseed+$courseseed;
11431: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11432: #&logthis("rndseed :$num1:$num2:$_64bit");
11433: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11434:
11435: return "$num1:$num2";
11436: }
11437: }
11438:
11439: sub rndseed_64bit5 {
11440: my ($symb,$courseid,$domain,$username)=@_;
11441: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11442: return "$num1:$num2";
11443: }
11444:
11445: sub rndseed_CODE_64bit {
11446: my ($symb,$courseid,$domain,$username)=@_;
11447: {
11448: use integer;
11449: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11450: my $symbseed=numval2($symb);
11451: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11452: my $CODEseed=numval(&getCODE());
11453: my $courseseed=unpack("%32S*",$courseid.' ');
11454: my $num1=$symbseed+$CODEchck;
11455: my $num2=$CODEseed+$courseseed+$symbchck;
11456: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11457: #&logthis("rndseed :$num1:$num2:$symb");
11458: if ($_64bit) { $num1=(($num1<<32)>>32); }
11459: if ($_64bit) { $num2=(($num2<<32)>>32); }
11460: return "$num1:$num2";
11461: }
11462: }
11463:
11464: sub rndseed_CODE_64bit4 {
11465: my ($symb,$courseid,$domain,$username)=@_;
11466: {
11467: use integer;
11468: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11469: my $symbseed=numval3($symb);
11470: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11471: my $CODEseed=numval3(&getCODE());
11472: my $courseseed=unpack("%32S*",$courseid.' ');
11473: my $num1=$symbseed+$CODEchck;
11474: my $num2=$CODEseed+$courseseed+$symbchck;
11475: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11476: #&logthis("rndseed :$num1:$num2:$symb");
11477: if ($_64bit) { $num1=(($num1<<32)>>32); }
11478: if ($_64bit) { $num2=(($num2<<32)>>32); }
11479: return "$num1:$num2";
11480: }
11481: }
11482:
11483: sub rndseed_CODE_64bit5 {
11484: my ($symb,$courseid,$domain,$username)=@_;
11485: my $code = &getCODE();
11486: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11487: return "$num1:$num2";
11488: }
11489:
11490: sub setup_random_from_rndseed {
11491: my ($rndseed)=@_;
11492: if ($rndseed =~/([,:])/) {
11493: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
11494: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
11495: &Math::Random::random_set_seed_from_phrase($rndseed);
11496: } else {
11497: &Math::Random::random_set_seed($num1,$num2);
11498: }
11499: } else {
11500: &Math::Random::random_set_seed_from_phrase($rndseed);
11501: }
11502: }
11503:
11504: sub latest_receipt_algorithm_id {
11505: return 'receipt3';
11506: }
11507:
11508: sub recunique {
11509: my $fucourseid=shift;
11510: my $unique;
11511: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11512: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11513: $unique=$env{"course.$fucourseid.internal.encseed"};
11514: } else {
11515: $unique=$perlvar{'lonReceipt'};
11516: }
11517: return unpack("%32C*",$unique);
11518: }
11519:
11520: sub recprefix {
11521: my $fucourseid=shift;
11522: my $prefix;
11523: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11524: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11525: $prefix=$env{"course.$fucourseid.internal.encpref"};
11526: } else {
11527: $prefix=$perlvar{'lonHostID'};
11528: }
11529: return unpack("%32C*",$prefix);
11530: }
11531:
11532: sub ireceipt {
11533: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11534:
11535: my $return =&recprefix($fucourseid).'-';
11536:
11537: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11538: $env{'request.state'} eq 'construct') {
11539: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11540: return $return;
11541: }
11542:
11543: my $cuname=unpack("%32C*",$funame);
11544: my $cudom=unpack("%32C*",$fudom);
11545: my $cucourseid=unpack("%32C*",$fucourseid);
11546: my $cusymb=unpack("%32C*",$fusymb);
11547: my $cunique=&recunique($fucourseid);
11548: my $cpart=unpack("%32S*",$part);
11549: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11550:
11551: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11552:
11553: $return.= ($cunique%$cuname+
11554: $cunique%$cudom+
11555: $cusymb%$cuname+
11556: $cusymb%$cudom+
11557: $cucourseid%$cuname+
11558: $cucourseid%$cudom+
11559: $cpart%$cuname+
11560: $cpart%$cudom);
11561: } else {
11562: $return.= ($cunique%$cuname+
11563: $cunique%$cudom+
11564: $cusymb%$cuname+
11565: $cusymb%$cudom+
11566: $cucourseid%$cuname+
11567: $cucourseid%$cudom);
11568: }
11569: return $return;
11570: }
11571:
11572: sub receipt {
11573: my ($part)=@_;
11574: my ($symb,$courseid,$domain,$name) = &whichuser();
11575: return &ireceipt($name,$domain,$courseid,$symb,$part);
11576: }
11577:
11578: sub whichuser {
11579: my ($passedsymb)=@_;
11580: my ($symb,$courseid,$domain,$name,$publicuser);
11581: if (defined($env{'form.grade_symb'})) {
11582: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11583: my $allowed=&allowed('vgr',$tmp_courseid);
11584: if (!$allowed &&
11585: exists($env{'request.course.sec'}) &&
11586: $env{'request.course.sec'} !~ /^\s*$/) {
11587: $allowed=&allowed('vgr',$tmp_courseid.
11588: '/'.$env{'request.course.sec'});
11589: }
11590: if ($allowed) {
11591: ($symb)=&get_env_multiple('form.grade_symb');
11592: $courseid=$tmp_courseid;
11593: ($domain)=&get_env_multiple('form.grade_domain');
11594: ($name)=&get_env_multiple('form.grade_username');
11595: return ($symb,$courseid,$domain,$name,$publicuser);
11596: }
11597: }
11598: if (!$passedsymb) {
11599: $symb=&symbread();
11600: } else {
11601: $symb=$passedsymb;
11602: }
11603: $courseid=$env{'request.course.id'};
11604: $domain=$env{'user.domain'};
11605: $name=$env{'user.name'};
11606: if ($name eq 'public' && $domain eq 'public') {
11607: if (!defined($env{'form.username'})) {
11608: $env{'form.username'}.=time.rand(10000000);
11609: }
11610: $name.=$env{'form.username'};
11611: }
11612: return ($symb,$courseid,$domain,$name,$publicuser);
11613:
11614: }
11615:
11616: # ------------------------------------------------------------ Serves up a file
11617: # returns either the contents of the file or
11618: # -1 if the file doesn't exist
11619: #
11620: # if the target is a file that was uploaded via DOCS,
11621: # a check will be made to see if a current copy exists on the local server,
11622: # if it does this will be served, otherwise a copy will be retrieved from
11623: # the home server for the course and stored in /home/httpd/html/userfiles on
11624: # the local server.
11625:
11626: sub getfile {
11627: my ($file) = @_;
11628: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11629: &repcopy($file);
11630: return &readfile($file);
11631: }
11632:
11633: sub repcopy_userfile {
11634: my ($file)=@_;
11635: my $londocroot = $perlvar{'lonDocRoot'};
11636: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11637: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11638: my ($cdom,$cnum,$filename) =
11639: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11640: my $uri="/uploaded/$cdom/$cnum/$filename";
11641: if (-e "$file") {
11642: # we already have a local copy, check it out
11643: my @fileinfo = stat($file);
11644: my $rtncode;
11645: my $info;
11646: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11647: if ($lwpresp ne 'ok') {
11648: # there is no such file anymore, even though we had a local copy
11649: if ($rtncode eq '404') {
11650: unlink($file);
11651: }
11652: return -1;
11653: }
11654: if ($info < $fileinfo[9]) {
11655: # nice, the file we have is up-to-date, just say okay
11656: return 'ok';
11657: } else {
11658: # the file is outdated, get rid of it
11659: unlink($file);
11660: }
11661: }
11662: # one way or the other, at this point, we don't have the file
11663: # construct the correct path for the file
11664: my @parts = ($cdom,$cnum);
11665: if ($filename =~ m|^(.+)/[^/]+$|) {
11666: push @parts, split(/\//,$1);
11667: }
11668: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11669: foreach my $part (@parts) {
11670: $path .= '/'.$part;
11671: if (!-e $path) {
11672: mkdir($path,0770);
11673: }
11674: }
11675: # now the path exists for sure
11676: # get a user agent
11677: my $ua=new LWP::UserAgent;
11678: my $transferfile=$file.'.in.transfer';
11679: # FIXME: this should flock
11680: if (-e $transferfile) { return 'ok'; }
11681: my $request;
11682: $uri=~s/^\///;
11683: my $homeserver = &homeserver($cnum,$cdom);
11684: my $protocol = $protocol{$homeserver};
11685: $protocol = 'http' if ($protocol ne 'https');
11686: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11687: my $response=$ua->request($request,$transferfile);
11688: # did it work?
11689: if ($response->is_error()) {
11690: unlink($transferfile);
11691: &logthis("Userfile repcopy failed for $uri");
11692: return -1;
11693: }
11694: # worked, rename the transfer file
11695: rename($transferfile,$file);
11696: return 'ok';
11697: }
11698:
11699: sub tokenwrapper {
11700: my $uri=shift;
11701: $uri=~s|^https?\://([^/]+)||;
11702: $uri=~s|^/||;
11703: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11704: my $token=$1;
11705: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11706: if ($udom && $uname && $file) {
11707: $file=~s|(\?\.*)*$||;
11708: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11709: my $homeserver = &homeserver($uname,$udom);
11710: my $protocol = $protocol{$homeserver};
11711: $protocol = 'http' if ($protocol ne 'https');
11712: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11713: (($uri=~/\?/)?'&':'?').'token='.$token.
11714: '&tokenissued='.$perlvar{'lonHostID'};
11715: } else {
11716: return '/adm/notfound.html';
11717: }
11718: }
11719:
11720: # call with reqtype HEAD: get last modification time
11721: # call with reqtype GET: get the file contents
11722: # Do not call this with reqtype GET for large files! It loads everything into memory
11723: #
11724: sub getuploaded {
11725: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11726: $uri=~s/^\///;
11727: my $homeserver = &homeserver($cnum,$cdom);
11728: my $protocol = $protocol{$homeserver};
11729: $protocol = 'http' if ($protocol ne 'https');
11730: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11731: my $ua=new LWP::UserAgent;
11732: my $request=new HTTP::Request($reqtype,$uri);
11733: my $response=$ua->request($request);
11734: $$rtncode = $response->code;
11735: if (! $response->is_success()) {
11736: return 'failed';
11737: }
11738: if ($reqtype eq 'HEAD') {
11739: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11740: } elsif ($reqtype eq 'GET') {
11741: $$info = $response->content;
11742: }
11743: return 'ok';
11744: }
11745:
11746: sub readfile {
11747: my $file = shift;
11748: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11749: my $fh;
11750: open($fh,"<$file");
11751: my $a='';
11752: while (my $line = <$fh>) { $a .= $line; }
11753: return $a;
11754: }
11755:
11756: sub filelocation {
11757: my ($dir,$file) = @_;
11758: my $location;
11759: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11760:
11761: if ($file =~ m-^/adm/-) {
11762: $file=~s-^/adm/wrapper/-/-;
11763: $file=~s-^/adm/coursedocs/showdoc/-/-;
11764: }
11765:
11766: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11767: $location = $file;
11768: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11769: my ($udom,$uname,$filename)=
11770: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11771: my $home=&homeserver($uname,$udom);
11772: my $is_me=0;
11773: my @ids=¤t_machine_ids();
11774: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11775: if ($is_me) {
11776: $location=propath($udom,$uname).'/userfiles/'.$filename;
11777: } else {
11778: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11779: $udom.'/'.$uname.'/'.$filename;
11780: }
11781: } elsif ($file =~ m-^/adm/-) {
11782: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11783: } else {
11784: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11785: $file=~s:^/(res|priv)/:/:;
11786: my $space=$1;
11787: if ( !( $file =~ m:^/:) ) {
11788: $location = $dir. '/'.$file;
11789: } else {
11790: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11791: }
11792: }
11793: $location=~s://+:/:g; # remove duplicate /
11794: while ($location=~m{/\.\./}) {
11795: if ($location =~ m{/[^/]+/\.\./}) {
11796: $location=~ s{/[^/]+/\.\./}{/}g;
11797: } else {
11798: $location=~ s{/\.\./}{/}g;
11799: }
11800: } #remove dir/..
11801: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11802: return $location;
11803: }
11804:
11805: sub hreflocation {
11806: my ($dir,$file)=@_;
11807: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11808: $file=filelocation($dir,$file);
11809: } elsif ($file=~m-^/adm/-) {
11810: $file=~s-^/adm/wrapper/-/-;
11811: $file=~s-^/adm/coursedocs/showdoc/-/-;
11812: }
11813: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11814: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11815: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11816: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11817: {/uploaded/$1/$2/}x;
11818: }
11819: if ($file=~ m{^/userfiles/}) {
11820: $file =~ s{^/userfiles/}{/uploaded/};
11821: }
11822: return $file;
11823: }
11824:
11825:
11826:
11827:
11828:
11829: sub current_machine_domains {
11830: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11831: }
11832:
11833: sub machine_domains {
11834: my ($hostname) = @_;
11835: my @domains;
11836: my %hostname = &all_hostnames();
11837: while( my($id, $name) = each(%hostname)) {
11838: # &logthis("-$id-$name-$hostname-");
11839: if ($hostname eq $name) {
11840: push(@domains,&host_domain($id));
11841: }
11842: }
11843: return @domains;
11844: }
11845:
11846: sub current_machine_ids {
11847: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11848: }
11849:
11850: sub machine_ids {
11851: my ($hostname) = @_;
11852: $hostname ||= &hostname($perlvar{'lonHostID'});
11853: my @ids;
11854: my %name_to_host = &all_names();
11855: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11856: return @{ $name_to_host{$hostname} };
11857: }
11858: return;
11859: }
11860:
11861: sub additional_machine_domains {
11862: my @domains;
11863: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11864: while( my $line = <$fh>) {
11865: $line =~ s/\s//g;
11866: push(@domains,$line);
11867: }
11868: return @domains;
11869: }
11870:
11871: sub default_login_domain {
11872: my $domain = $perlvar{'lonDefDomain'};
11873: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11874: foreach my $posdom (¤t_machine_domains(),
11875: &additional_machine_domains()) {
11876: if (lc($posdom) eq lc($testdomain)) {
11877: $domain=$posdom;
11878: last;
11879: }
11880: }
11881: return $domain;
11882: }
11883:
11884: # ------------------------------------------------------------- Declutters URLs
11885:
11886: sub declutter {
11887: my $thisfn=shift;
11888: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11889: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
11890: $thisfn=~s{^/home/httpd/html}{};
11891: }
11892: $thisfn=~s/^\///;
11893: $thisfn=~s|^adm/wrapper/||;
11894: $thisfn=~s|^adm/coursedocs/showdoc/||;
11895: $thisfn=~s/^res\///;
11896: $thisfn=~s/^priv\///;
11897: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11898: $thisfn=~s/\?.+$//;
11899: }
11900: return $thisfn;
11901: }
11902:
11903: # ------------------------------------------------------------- Clutter up URLs
11904:
11905: sub clutter {
11906: my $thisfn='/'.&declutter(shift);
11907: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11908: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11909: $thisfn='/res'.$thisfn;
11910: }
11911: if ($thisfn !~m|^/adm|) {
11912: if ($thisfn =~ m|^/ext/|) {
11913: $thisfn='/adm/wrapper'.$thisfn;
11914: } else {
11915: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11916: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11917: if ($embstyle eq 'ssi'
11918: || ($embstyle eq 'hdn')
11919: || ($embstyle eq 'rat')
11920: || ($embstyle eq 'prv')
11921: || ($embstyle eq 'ign')) {
11922: #do nothing with these
11923: } elsif (($embstyle eq 'img')
11924: || ($embstyle eq 'emb')
11925: || ($embstyle eq 'wrp')) {
11926: $thisfn='/adm/wrapper'.$thisfn;
11927: } elsif ($embstyle eq 'unk'
11928: && $thisfn!~/\.(sequence|page)$/) {
11929: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11930: } else {
11931: # &logthis("Got a blank emb style");
11932: }
11933: }
11934: }
11935: return $thisfn;
11936: }
11937:
11938: sub clutter_with_no_wrapper {
11939: my $uri = &clutter(shift);
11940: if ($uri =~ m-^/adm/-) {
11941: $uri =~ s-^/adm/wrapper/-/-;
11942: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11943: }
11944: return $uri;
11945: }
11946:
11947: sub freeze_escape {
11948: my ($value)=@_;
11949: if (ref($value)) {
11950: $value=&nfreeze($value);
11951: return '__FROZEN__'.&escape($value);
11952: }
11953: return &escape($value);
11954: }
11955:
11956:
11957: sub thaw_unescape {
11958: my ($value)=@_;
11959: if ($value =~ /^__FROZEN__/) {
11960: substr($value,0,10,undef);
11961: $value=&unescape($value);
11962: return &thaw($value);
11963: }
11964: return &unescape($value);
11965: }
11966:
11967: sub correct_line_ends {
11968: my ($result)=@_;
11969: $$result =~s/\r\n/\n/mg;
11970: $$result =~s/\r/\n/mg;
11971: }
11972: # ================================================================ Main Program
11973:
11974: sub goodbye {
11975: &logthis("Starting Shut down");
11976: #not converted to using infrastruture and probably shouldn't be
11977: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11978: #converted
11979: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11980: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11981: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11982: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11983: #1.1 only
11984: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11985: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11986: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11987: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11988: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11989: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11990: &logthis(sprintf("%-20s is %s",'hits',$hits));
11991: &flushcourselogs();
11992: &logthis("Shutting down");
11993: }
11994:
11995: sub get_dns {
11996: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
11997: if (!$ignore_cache) {
11998: my ($content,$cached)=
11999: &Apache::lonnet::is_cached_new('dns',$url);
12000: if ($cached) {
12001: &$func($content,$hashref);
12002: return;
12003: }
12004: }
12005:
12006: my %alldns;
12007: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12008: foreach my $dns (<$config>) {
12009: next if ($dns !~ /^\^(\S*)/x);
12010: my $line = $1;
12011: my ($host,$protocol) = split(/:/,$line);
12012: if ($protocol ne 'https') {
12013: $protocol = 'http';
12014: }
12015: $alldns{$host} = $protocol;
12016: }
12017: while (%alldns) {
12018: my ($dns) = sort { $b cmp $a } keys(%alldns);
12019: my $ua=new LWP::UserAgent;
12020: $ua->timeout(30);
12021: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
12022: my $response=$ua->request($request);
12023: delete($alldns{$dns});
12024: next if ($response->is_error());
12025: my @content = split("\n",$response->content);
12026: unless ($nocache) {
12027: &do_cache_new('dns',$url,\@content,30*24*60*60);
12028: }
12029: &$func(\@content,$hashref);
12030: return;
12031: }
12032: close($config);
12033: my $which = (split('/',$url))[3];
12034: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
12035: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
12036: my @content = <$config>;
12037: &$func(\@content,$hashref);
12038: return;
12039: }
12040:
12041: # ------------------------------------------------------Get DNS checksums file
12042: sub parse_dns_checksums_tab {
12043: my ($lines,$hashref) = @_;
12044: my $lonhost = $perlvar{'lonHostID'};
12045: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
12046: my $loncaparev = &get_server_loncaparev($machine_dom);
12047: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
12048: my $webconfdir = '/etc/httpd/conf';
12049: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
12050: $webconfdir = '/etc/apache2';
12051: } elsif ($distro =~ /^sles(\d+)$/) {
12052: if ($1 >= 10) {
12053: $webconfdir = '/etc/apache2';
12054: }
12055: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
12056: if ($1 >= 10.0) {
12057: $webconfdir = '/etc/apache2';
12058: }
12059: }
12060: my ($release,$timestamp) = split(/\-/,$loncaparev);
12061: my (%chksum,%revnum);
12062: if (ref($lines) eq 'ARRAY') {
12063: chomp(@{$lines});
12064: my $version = shift(@{$lines});
12065: if ($version eq $release) {
12066: foreach my $line (@{$lines}) {
12067: my ($file,$version,$shasum) = split(/,/,$line);
12068: if ($file =~ m{^/etc/httpd/conf}) {
12069: if ($webconfdir eq '/etc/apache2') {
12070: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
12071: }
12072: }
12073: $chksum{$file} = $shasum;
12074: $revnum{$file} = $version;
12075: }
12076: if (ref($hashref) eq 'HASH') {
12077: %{$hashref} = (
12078: sums => \%chksum,
12079: versions => \%revnum,
12080: );
12081: }
12082: }
12083: }
12084: return;
12085: }
12086:
12087: sub fetch_dns_checksums {
12088: my %checksums;
12089: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
12090: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
12091: my ($release,$timestamp) = split(/\-/,$loncaparev);
12092: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
12093: \%checksums);
12094: return \%checksums;
12095: }
12096:
12097: # ------------------------------------------------------------ Read domain file
12098: {
12099: my $loaded;
12100: my %domain;
12101:
12102: sub parse_domain_tab {
12103: my ($lines) = @_;
12104: foreach my $line (@$lines) {
12105: next if ($line =~ /^(\#|\s*$ )/x);
12106:
12107: chomp($line);
12108: my ($name,@elements) = split(/:/,$line,9);
12109: my %this_domain;
12110: foreach my $field ('description', 'auth_def', 'auth_arg_def',
12111: 'lang_def', 'city', 'longi', 'lati',
12112: 'primary') {
12113: $this_domain{$field} = shift(@elements);
12114: }
12115: $domain{$name} = \%this_domain;
12116: }
12117: }
12118:
12119: sub reset_domain_info {
12120: undef($loaded);
12121: undef(%domain);
12122: }
12123:
12124: sub load_domain_tab {
12125: my ($ignore_cache) = @_;
12126: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
12127: my $fh;
12128: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
12129: my @lines = <$fh>;
12130: &parse_domain_tab(\@lines);
12131: }
12132: close($fh);
12133: $loaded = 1;
12134: }
12135:
12136: sub domain {
12137: &load_domain_tab() if (!$loaded);
12138:
12139: my ($name,$what) = @_;
12140: return if ( !exists($domain{$name}) );
12141:
12142: if (!$what) {
12143: return $domain{$name}{'description'};
12144: }
12145: return $domain{$name}{$what};
12146: }
12147:
12148: sub domain_info {
12149: &load_domain_tab() if (!$loaded);
12150: return %domain;
12151: }
12152:
12153: }
12154:
12155:
12156: # ------------------------------------------------------------- Read hosts file
12157: {
12158: my %hostname;
12159: my %hostdom;
12160: my %libserv;
12161: my $loaded;
12162: my %name_to_host;
12163: my %internetdom;
12164: my %LC_dns_serv;
12165:
12166: sub parse_hosts_tab {
12167: my ($file) = @_;
12168: foreach my $configline (@$file) {
12169: next if ($configline =~ /^(\#|\s*$ )/x);
12170: chomp($configline);
12171: if ($configline =~ /^\^/) {
12172: if ($configline =~ /^\^([\w.\-]+)/) {
12173: $LC_dns_serv{$1} = 1;
12174: }
12175: next;
12176: }
12177: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
12178: $name=~s/\s//g;
12179: if ($id && $domain && $role && $name) {
12180: $hostname{$id}=$name;
12181: push(@{$name_to_host{$name}}, $id);
12182: $hostdom{$id}=$domain;
12183: if ($role eq 'library') { $libserv{$id}=$name; }
12184: if (defined($protocol)) {
12185: if ($protocol eq 'https') {
12186: $protocol{$id} = $protocol;
12187: } else {
12188: $protocol{$id} = 'http';
12189: }
12190: } else {
12191: $protocol{$id} = 'http';
12192: }
12193: if (defined($intdom)) {
12194: $internetdom{$id} = $intdom;
12195: }
12196: }
12197: }
12198: }
12199:
12200: sub reset_hosts_info {
12201: &purge_remembered();
12202: &reset_domain_info();
12203: &reset_hosts_ip_info();
12204: undef(%name_to_host);
12205: undef(%hostname);
12206: undef(%hostdom);
12207: undef(%libserv);
12208: undef($loaded);
12209: }
12210:
12211: sub load_hosts_tab {
12212: my ($ignore_cache) = @_;
12213: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
12214: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12215: my @config = <$config>;
12216: &parse_hosts_tab(\@config);
12217: close($config);
12218: $loaded=1;
12219: }
12220:
12221: sub hostname {
12222: &load_hosts_tab() if (!$loaded);
12223:
12224: my ($lonid) = @_;
12225: return $hostname{$lonid};
12226: }
12227:
12228: sub all_hostnames {
12229: &load_hosts_tab() if (!$loaded);
12230:
12231: return %hostname;
12232: }
12233:
12234: sub all_names {
12235: &load_hosts_tab() if (!$loaded);
12236:
12237: return %name_to_host;
12238: }
12239:
12240: sub all_host_domain {
12241: &load_hosts_tab() if (!$loaded);
12242: return %hostdom;
12243: }
12244:
12245: sub is_library {
12246: &load_hosts_tab() if (!$loaded);
12247:
12248: return exists($libserv{$_[0]});
12249: }
12250:
12251: sub all_library {
12252: &load_hosts_tab() if (!$loaded);
12253:
12254: return %libserv;
12255: }
12256:
12257: sub unique_library {
12258: #2x reverse removes all hostnames that appear more than once
12259: my %unique = reverse &all_library();
12260: return reverse %unique;
12261: }
12262:
12263: sub get_servers {
12264: &load_hosts_tab() if (!$loaded);
12265:
12266: my ($domain,$type) = @_;
12267: my %possible_hosts = ($type eq 'library') ? %libserv
12268: : %hostname;
12269: my %result;
12270: if (ref($domain) eq 'ARRAY') {
12271: while ( my ($host,$hostname) = each(%possible_hosts)) {
12272: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
12273: $result{$host} = $hostname;
12274: }
12275: }
12276: } else {
12277: while ( my ($host,$hostname) = each(%possible_hosts)) {
12278: if ($hostdom{$host} eq $domain) {
12279: $result{$host} = $hostname;
12280: }
12281: }
12282: }
12283: return %result;
12284: }
12285:
12286: sub get_unique_servers {
12287: my %unique = reverse &get_servers(@_);
12288: return reverse %unique;
12289: }
12290:
12291: sub host_domain {
12292: &load_hosts_tab() if (!$loaded);
12293:
12294: my ($lonid) = @_;
12295: return $hostdom{$lonid};
12296: }
12297:
12298: sub all_domains {
12299: &load_hosts_tab() if (!$loaded);
12300:
12301: my %seen;
12302: my @uniq = grep(!$seen{$_}++, values(%hostdom));
12303: return @uniq;
12304: }
12305:
12306: sub internet_dom {
12307: &load_hosts_tab() if (!$loaded);
12308:
12309: my ($lonid) = @_;
12310: return $internetdom{$lonid};
12311: }
12312:
12313: sub is_LC_dns {
12314: &load_hosts_tab() if (!$loaded);
12315:
12316: my ($hostname) = @_;
12317: return exists($LC_dns_serv{$hostname});
12318: }
12319:
12320: }
12321:
12322: {
12323: my %iphost;
12324: my %name_to_ip;
12325: my %lonid_to_ip;
12326:
12327: sub get_hosts_from_ip {
12328: my ($ip) = @_;
12329: my %iphosts = &get_iphost();
12330: if (ref($iphosts{$ip})) {
12331: return @{$iphosts{$ip}};
12332: }
12333: return;
12334: }
12335:
12336: sub reset_hosts_ip_info {
12337: undef(%iphost);
12338: undef(%name_to_ip);
12339: undef(%lonid_to_ip);
12340: }
12341:
12342: sub get_host_ip {
12343: my ($lonid) = @_;
12344: if (exists($lonid_to_ip{$lonid})) {
12345: return $lonid_to_ip{$lonid};
12346: }
12347: my $name=&hostname($lonid);
12348: my $ip = gethostbyname($name);
12349: return if (!$ip || length($ip) ne 4);
12350: $ip=inet_ntoa($ip);
12351: $name_to_ip{$name} = $ip;
12352: $lonid_to_ip{$lonid} = $ip;
12353: return $ip;
12354: }
12355:
12356: sub get_iphost {
12357: my ($ignore_cache) = @_;
12358:
12359: if (!$ignore_cache) {
12360: if (%iphost) {
12361: return %iphost;
12362: }
12363: my ($ip_info,$cached)=
12364: &Apache::lonnet::is_cached_new('iphost','iphost');
12365: if ($cached) {
12366: %iphost = %{$ip_info->[0]};
12367: %name_to_ip = %{$ip_info->[1]};
12368: %lonid_to_ip = %{$ip_info->[2]};
12369: return %iphost;
12370: }
12371: }
12372:
12373: # get yesterday's info for fallback
12374: my %old_name_to_ip;
12375: my ($ip_info,$cached)=
12376: &Apache::lonnet::is_cached_new('iphost','iphost');
12377: if ($cached) {
12378: %old_name_to_ip = %{$ip_info->[1]};
12379: }
12380:
12381: my %name_to_host = &all_names();
12382: foreach my $name (keys(%name_to_host)) {
12383: my $ip;
12384: if (!exists($name_to_ip{$name})) {
12385: $ip = gethostbyname($name);
12386: if (!$ip || length($ip) ne 4) {
12387: if (defined($old_name_to_ip{$name})) {
12388: $ip = $old_name_to_ip{$name};
12389: &logthis("Can't find $name defaulting to old $ip");
12390: } else {
12391: &logthis("Name $name no IP found");
12392: next;
12393: }
12394: } else {
12395: $ip=inet_ntoa($ip);
12396: }
12397: $name_to_ip{$name} = $ip;
12398: } else {
12399: $ip = $name_to_ip{$name};
12400: }
12401: foreach my $id (@{ $name_to_host{$name} }) {
12402: $lonid_to_ip{$id} = $ip;
12403: }
12404: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12405: }
12406: &do_cache_new('iphost','iphost',
12407: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12408: 48*60*60);
12409:
12410: return %iphost;
12411: }
12412:
12413: #
12414: # Given a DNS returns the loncapa host name for that DNS
12415: #
12416: sub host_from_dns {
12417: my ($dns) = @_;
12418: my @hosts;
12419: my $ip;
12420:
12421: if (exists($name_to_ip{$dns})) {
12422: $ip = $name_to_ip{$dns};
12423: }
12424: if (!$ip) {
12425: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12426: if (length($ip) == 4) {
12427: $ip = &IO::Socket::inet_ntoa($ip);
12428: }
12429: }
12430: if ($ip) {
12431: @hosts = get_hosts_from_ip($ip);
12432: return $hosts[0];
12433: }
12434: return undef;
12435: }
12436:
12437: sub get_internet_names {
12438: my ($lonid) = @_;
12439: return if ($lonid eq '');
12440: my ($idnref,$cached)=
12441: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12442: if ($cached) {
12443: return $idnref;
12444: }
12445: my $ip = &get_host_ip($lonid);
12446: my @hosts = &get_hosts_from_ip($ip);
12447: my %iphost = &get_iphost();
12448: my (@idns,%seen);
12449: foreach my $id (@hosts) {
12450: my $dom = &host_domain($id);
12451: my $prim_id = &domain($dom,'primary');
12452: my $prim_ip = &get_host_ip($prim_id);
12453: next if ($seen{$prim_ip});
12454: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12455: foreach my $id (@{$iphost{$prim_ip}}) {
12456: my $intdom = &internet_dom($id);
12457: unless (grep(/^\Q$intdom\E$/,@idns)) {
12458: push(@idns,$intdom);
12459: }
12460: }
12461: }
12462: $seen{$prim_ip} = 1;
12463: }
12464: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12465: }
12466:
12467: }
12468:
12469: sub all_loncaparevs {
12470: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
12471: }
12472:
12473: # ---------------------------------------------------------- Read loncaparev table
12474: {
12475: sub load_loncaparevs {
12476: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12477: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12478: while (my $configline=<$config>) {
12479: chomp($configline);
12480: my ($hostid,$loncaparev)=split(/:/,$configline);
12481: $loncaparevs{$hostid}=$loncaparev;
12482: }
12483: close($config);
12484: }
12485: }
12486: }
12487: }
12488:
12489: # ---------------------------------------------------------- Read serverhostID table
12490: {
12491: sub load_serverhomeIDs {
12492: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12493: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12494: while (my $configline=<$config>) {
12495: chomp($configline);
12496: my ($name,$id)=split(/:/,$configline);
12497: $serverhomeIDs{$name}=$id;
12498: }
12499: close($config);
12500: }
12501: }
12502: }
12503: }
12504:
12505:
12506: BEGIN {
12507:
12508: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12509: unless ($readit) {
12510: {
12511: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12512: %perlvar = (%perlvar,%{$configvars});
12513: }
12514:
12515:
12516: # ------------------------------------------------------ Read spare server file
12517: {
12518: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12519:
12520: while (my $configline=<$config>) {
12521: chomp($configline);
12522: if ($configline) {
12523: my ($host,$type) = split(':',$configline,2);
12524: if (!defined($type) || $type eq '') { $type = 'default' };
12525: push(@{ $spareid{$type} }, $host);
12526: }
12527: }
12528: close($config);
12529: }
12530: # ------------------------------------------------------------ Read permissions
12531: {
12532: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12533:
12534: while (my $configline=<$config>) {
12535: chomp($configline);
12536: if ($configline) {
12537: my ($role,$perm)=split(/ /,$configline);
12538: if ($perm ne '') { $pr{$role}=$perm; }
12539: }
12540: }
12541: close($config);
12542: }
12543:
12544: # -------------------------------------------- Read plain texts for permissions
12545: {
12546: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12547:
12548: while (my $configline=<$config>) {
12549: chomp($configline);
12550: if ($configline) {
12551: my ($short,@plain)=split(/:/,$configline);
12552: %{$prp{$short}} = ();
12553: if (@plain > 0) {
12554: $prp{$short}{'std'} = $plain[0];
12555: for (my $i=1; $i<@plain; $i++) {
12556: $prp{$short}{'alt'.$i} = $plain[$i];
12557: }
12558: }
12559: }
12560: }
12561: close($config);
12562: }
12563:
12564: # ---------------------------------------------------------- Read package table
12565: {
12566: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12567:
12568: while (my $configline=<$config>) {
12569: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12570: chomp($configline);
12571: my ($short,$plain)=split(/:/,$configline);
12572: my ($pack,$name)=split(/\&/,$short);
12573: if ($plain ne '') {
12574: $packagetab{$pack.'&'.$name.'&name'}=$name;
12575: $packagetab{$short}=$plain;
12576: }
12577: }
12578: close($config);
12579: }
12580:
12581: # ---------------------------------------------------------- Read loncaparev table
12582:
12583: &load_loncaparevs();
12584:
12585: # ---------------------------------------------------------- Read serverhostID table
12586:
12587: &load_serverhomeIDs();
12588:
12589: # ---------------------------------------------------------- Read releaseslist XML
12590: {
12591: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12592: if (-e $file) {
12593: my $parser = HTML::LCParser->new($file);
12594: while (my $token = $parser->get_token()) {
12595: if ($token->[0] eq 'S') {
12596: my $item = $token->[1];
12597: my $name = $token->[2]{'name'};
12598: my $value = $token->[2]{'value'};
12599: if ($item ne '' && $name ne '' && $value ne '') {
12600: my $release = $parser->get_text();
12601: $release =~ s/(^\s*|\s*$ )//gx;
12602: $needsrelease{$item.':'.$name.':'.$value} = $release;
12603: }
12604: }
12605: }
12606: }
12607: }
12608:
12609: # ---------------------------------------------------------- Read managers table
12610: {
12611: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12612: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12613: while (my $configline=<$config>) {
12614: chomp($configline);
12615: next if ($configline =~ /^\#/);
12616: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12617: $managerstab{$configline} = 1;
12618: }
12619: }
12620: close($config);
12621: }
12622: }
12623: }
12624:
12625: # ------------- set up temporary directory
12626: {
12627: $tmpdir = LONCAPA::tempdir();
12628:
12629: }
12630:
12631: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12632: 'compress_threshold'=> 20_000,
12633: });
12634:
12635: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12636: $dumpcount=0;
12637: $locknum=0;
12638:
12639: &logtouch();
12640: &logthis('<font color="yellow">INFO: Read configuration</font>');
12641: $readit=1;
12642: {
12643: use integer;
12644: my $test=(2**32)+1;
12645: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12646: &logthis(" Detected 64bit platform ($_64bit)");
12647: }
12648: }
12649: }
12650:
12651: 1;
12652: __END__
12653:
12654: =pod
12655:
12656: =head1 NAME
12657:
12658: Apache::lonnet - Subroutines to ask questions about things in the network.
12659:
12660: =head1 SYNOPSIS
12661:
12662: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12663:
12664: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12665:
12666: Common parameters:
12667:
12668: =over 4
12669:
12670: =item *
12671:
12672: $uname : an internal username (if $cname expecting a course Id specifically)
12673:
12674: =item *
12675:
12676: $udom : a domain (if $cdom expecting a course's domain specifically)
12677:
12678: =item *
12679:
12680: $symb : a resource instance identifier
12681:
12682: =item *
12683:
12684: $namespace : the name of a .db file that contains the data needed or
12685: being set.
12686:
12687: =back
12688:
12689: =head1 OVERVIEW
12690:
12691: lonnet provides subroutines which interact with the
12692: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12693: about classes, users, and resources.
12694:
12695: For many of these objects you can also use this to store data about
12696: them or modify them in various ways.
12697:
12698: =head2 Symbs
12699:
12700: To identify a specific instance of a resource, LON-CAPA uses symbols
12701: or "symbs"X<symb>. These identifiers are built from the URL of the
12702: map, the resource number of the resource in the map, and the URL of
12703: the resource itself. The latter is somewhat redundant, but might help
12704: if maps change.
12705:
12706: An example is
12707:
12708: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12709:
12710: The respective map entry is
12711:
12712: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12713: title="Problem 2">
12714: </resource>
12715:
12716: Symbs are used by the random number generator, as well as to store and
12717: restore data specific to a certain instance of for example a problem.
12718:
12719: =head2 Storing And Retrieving Data
12720:
12721: X<store()>X<cstore()>X<restore()>Three of the most important functions
12722: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12723: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12724: is is the non-critical message twin of cstore. These functions are for
12725: handlers to store a perl hash to a user's permanent data space in an
12726: easy manner, and to retrieve it again on another call. It is expected
12727: that a handler would use this once at the beginning to retrieve data,
12728: and then again once at the end to send only the new data back.
12729:
12730: The data is stored in the user's data directory on the user's
12731: homeserver under the ID of the course.
12732:
12733: The hash that is returned by restore will have all of the previous
12734: value for all of the elements of the hash.
12735:
12736: Example:
12737:
12738: #creating a hash
12739: my %hash;
12740: $hash{'foo'}='bar';
12741:
12742: #storing it
12743: &Apache::lonnet::cstore(\%hash);
12744:
12745: #changing a value
12746: $hash{'foo'}='notbar';
12747:
12748: #adding a new value
12749: $hash{'bar'}='foo';
12750: &Apache::lonnet::cstore(\%hash);
12751:
12752: #retrieving the hash
12753: my %history=&Apache::lonnet::restore();
12754:
12755: #print the hash
12756: foreach my $key (sort(keys(%history))) {
12757: print("\%history{$key} = $history{$key}");
12758: }
12759:
12760: Will print out:
12761:
12762: %history{1:foo} = bar
12763: %history{1:keys} = foo:timestamp
12764: %history{1:timestamp} = 990455579
12765: %history{2:bar} = foo
12766: %history{2:foo} = notbar
12767: %history{2:keys} = foo:bar:timestamp
12768: %history{2:timestamp} = 990455580
12769: %history{bar} = foo
12770: %history{foo} = notbar
12771: %history{timestamp} = 990455580
12772: %history{version} = 2
12773:
12774: Note that the special hash entries C<keys>, C<version> and
12775: C<timestamp> were added to the hash. C<version> will be equal to the
12776: total number of versions of the data that have been stored. The
12777: C<timestamp> attribute will be the UNIX time the hash was
12778: stored. C<keys> is available in every historical section to list which
12779: keys were added or changed at a specific historical revision of a
12780: hash.
12781:
12782: B<Warning>: do not store the hash that restore returns directly. This
12783: will cause a mess since it will restore the historical keys as if the
12784: were new keys. I.E. 1:foo will become 1:1:foo etc.
12785:
12786: Calling convention:
12787:
12788: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
12789: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
12790:
12791: For more detailed information, see lonnet specific documentation.
12792:
12793: =head1 RETURN MESSAGES
12794:
12795: =over 4
12796:
12797: =item * B<con_lost>: unable to contact remote host
12798:
12799: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12800: when the connection is brought back up
12801:
12802: =item * B<con_failed>: unable to contact remote host and unable to save message
12803: for later delivery
12804:
12805: =item * B<error:>: an error a occurred, a description of the error follows the :
12806:
12807: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12808: that was requested
12809:
12810: =back
12811:
12812: =head1 PUBLIC SUBROUTINES
12813:
12814: =head2 Session Environment Functions
12815:
12816: =over 4
12817:
12818: =item *
12819: X<appenv()>
12820: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12821: the user envirnoment file, and will be restored for each access this
12822: user makes during this session, also modifies the %env for the current
12823: process. Optional rolesarrayref - if defined contains a reference to an array
12824: of roles which are exempt from the restriction on modifying user.role entries
12825: in the user's environment.db and in %env.
12826:
12827: =item *
12828: X<delenv()>
12829: B<delenv($delthis,$regexp)>: removes all items from the session
12830: environment file that begin with $delthis. If the
12831: optional second arg - $regexp - is true, $delthis is treated as a
12832: regular expression, otherwise \Q$delthis\E is used.
12833: The values are also deleted from the current processes %env.
12834:
12835: =item * get_env_multiple($name)
12836:
12837: gets $name from the %env hash, it seemlessly handles the cases where multiple
12838: values may be defined and end up as an array ref.
12839:
12840: returns an array of values
12841:
12842: =back
12843:
12844: =head2 User Information
12845:
12846: =over 4
12847:
12848: =item *
12849: X<queryauthenticate()>
12850: B<queryauthenticate($uname,$udom)>: try to determine user's current
12851: authentication scheme
12852:
12853: =item *
12854: X<authenticate()>
12855: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12856: authenticate user from domain's lib servers (first use the current
12857: one). C<$upass> should be the users password.
12858: $checkdefauth is optional (value is 1 if a check should be made to
12859: authenticate user using default authentication method, and allow
12860: account creation if username does not have account in the domain).
12861: $clientcancheckhost is optional (value is 1 if checking whether the
12862: server can host will occur on the client side in lonauth.pm).
12863:
12864: =item *
12865: X<homeserver()>
12866: B<homeserver($uname,$udom)>: find the server which has
12867: the user's directory and files (there must be only one), this caches
12868: the answer, and also caches if there is a borken connection.
12869:
12870: =item *
12871: X<idget()>
12872: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12873: (IDs are a unique resource in a domain, there must be only 1 ID per
12874: username, and only 1 username per ID in a specific domain) (returns
12875: hash: id=>name,id=>name)
12876:
12877: =item *
12878: X<idrget()>
12879: B<idrget($udom,@unames)>: find the IDs behind a list of
12880: usernames (returns hash: name=>id,name=>id)
12881:
12882: =item *
12883: X<idput()>
12884: B<idput($udom,%ids)>: store away a list of names and associated IDs
12885:
12886: =item *
12887: X<rolesinit()>
12888: B<rolesinit($udom,$username)>: get user privileges.
12889: returns user role, first access and timer interval hashes
12890:
12891: =item *
12892: X<privileged()>
12893: B<privileged($username,$domain)>: returns a true if user has a
12894: privileged and active role (i.e. su or dc), false otherwise.
12895:
12896: =item *
12897: X<getsection()>
12898: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12899: course $cname, return section name/number or '' for "not in course"
12900: and '-1' for "no section"
12901:
12902: =item *
12903: X<userenvironment()>
12904: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12905: passed in @what from the requested user's environment, returns a hash
12906:
12907: =item *
12908: X<userlog_query()>
12909: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12910: activity.log file. %filters defines filters applied when parsing the
12911: log file. These can be start or end timestamps, or the type of action
12912: - log to look for Login or Logout events, check for Checkin or
12913: Checkout, role for role selection. The response is in the form
12914: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12915: escaped strings of the action recorded in the activity.log file.
12916:
12917: =back
12918:
12919: =head2 User Roles
12920:
12921: =over 4
12922:
12923: =item *
12924:
12925: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12926: F: full access
12927: U,I,K: authentication modes (cxx only)
12928: '': forbidden
12929: 1: user needs to choose course
12930: 2: browse allowed
12931: A: passphrase authentication needed
12932:
12933: =item *
12934:
12935: constructaccess($url,$setpriv) : check for access to construction space URL
12936:
12937: See if the owner domain and name in the URL match those in the
12938: expected environment. If so, return three element list
12939: ($ownername,$ownerdomain,$ownerhome).
12940:
12941: Otherwise return the null string.
12942:
12943: If second argument 'setpriv' is true, it assigns the privileges,
12944: and returns the same three element list, unless the owner has
12945: blocked "ad hoc" Domain Coordinator access to the Author Space,
12946: in which case the null string is returned.
12947:
12948: =item *
12949:
12950: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12951: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12952: and course level
12953:
12954: =item *
12955:
12956: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12957: (rolesplain.tab); plain text explanation of a user role term.
12958: $type is Course (default) or Community.
12959: If $forcedefault evaluates to true, text returned will be default
12960: text for $type. Otherwise, if this is a course, the text returned
12961: will be a custom name for the role (if defined in the course's
12962: environment). If no custom name is defined the default is returned.
12963:
12964: =item *
12965:
12966: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
12967: All arguments are optional. Returns a hash of a roles, either for
12968: co-author/assistant author roles for a user's Construction Space
12969: (default), or if $context is 'userroles', roles for the user himself,
12970: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12971: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12972: For each key, value is set to colon-separated start and end times for
12973: the role. If no username and domain are specified, will default to
12974: current user/domain. Types, roles, and roledoms are references to arrays
12975: of role statuses (active, future or previous), roles
12976: (e.g., cc,in, st etc.) and domains of the roles which can be used
12977: to restrict the list of roles reported. If no array ref is
12978: provided for types, will default to return only active roles.
12979:
12980: =item *
12981:
12982: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12983: user: $uname:$udom has a role in the course: $cdom_$cnum.
12984:
12985: Additional optional arguments are: $type (if role checking is to be restricted
12986: to certain user status types -- previous (expired roles), active (currently
12987: available roles) or future (roles available in the future), and
12988: $hideprivileged -- if true will not report course roles for users who
12989: have active Domain Coordinator role in course's domain or in additional
12990: domains (specified in 'Domains to check for privileged users' in course
12991: environment -- set via: Course Settings -> Classlists and staff listing).
12992:
12993: =item *
12994:
12995: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
12996: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
12997: $possdomains and $possroles are optional array refs -- to domains to check and
12998: roles to check. If $possdomains is not specified, a dump will be done of the
12999: users' roles.db to check for a dc or su role in any domain. This can be
13000: time consuming if &privileged is called repeatedly (e.g., when displaying a
13001: classlist), so in such cases, supplying a $possdomains array is preferred, as
13002: this then allows &privileged_by_domain() to be used, which caches the identity
13003: of privileged users, eliminating the need for repeated calls to &dump().
13004:
13005: =item *
13006:
13007: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
13008: where the outer hash keys are domains specified in the $possdomains array ref,
13009: next inner hash keys are privileged roles specified in the $roles array ref,
13010: and the innermost hash contains key = value pairs for username:domain = end:start
13011: for active or future "privileged" users with that role in that domain. To avoid
13012: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
13013: innerhash are cached using priv_$role and $dom as the identifiers.
13014:
13015: =back
13016:
13017: =head2 User Modification
13018:
13019: =over 4
13020:
13021: =item *
13022:
13023: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
13024: user for the level given by URL. Optional start and end dates (leave empty
13025: string or zero for "no date")
13026:
13027: =item *
13028:
13029: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
13030: change a users, password, possible return values are: ok,
13031: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
13032: refused
13033:
13034: =item *
13035:
13036: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
13037:
13038: =item *
13039:
13040: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
13041: $forceid,$desiredhome,$email,$inststatus,$candelete) :
13042:
13043: will update user information (firstname,middlename,lastname,generation,
13044: permanentemail), and if forceid is true, student/employee ID also.
13045: A user's institutional affiliation(s) can also be updated.
13046: User information fields will not be overwritten with empty entries
13047: unless the field is included in the $candelete array reference.
13048: This array is included when a single user is modified via "Manage Users",
13049: or when Autoupdate.pl is run by cron in a domain.
13050:
13051: =item *
13052:
13053: modifystudent
13054:
13055: modify a student's enrollment and identification information.
13056: The course id is resolved based on the current user's environment.
13057: This means the invoking user must be a course coordinator or otherwise
13058: associated with a course.
13059:
13060: This call is essentially a wrapper for lonnet::modifyuser and
13061: lonnet::modify_student_enrollment
13062:
13063: Inputs:
13064:
13065: =over 4
13066:
13067: =item B<$udom> Student's loncapa domain
13068:
13069: =item B<$uname> Student's loncapa login name
13070:
13071: =item B<$uid> Student/Employee ID
13072:
13073: =item B<$umode> Student's authentication mode
13074:
13075: =item B<$upass> Student's password
13076:
13077: =item B<$first> Student's first name
13078:
13079: =item B<$middle> Student's middle name
13080:
13081: =item B<$last> Student's last name
13082:
13083: =item B<$gene> Student's generation
13084:
13085: =item B<$usec> Student's section in course
13086:
13087: =item B<$end> Unix time of the roles expiration
13088:
13089: =item B<$start> Unix time of the roles start date
13090:
13091: =item B<$forceid> If defined, allow $uid to be changed
13092:
13093: =item B<$desiredhome> server to use as home server for student
13094:
13095: =item B<$email> Student's permanent e-mail address
13096:
13097: =item B<$type> Type of enrollment (auto or manual)
13098:
13099: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
13100:
13101: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
13102:
13103: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
13104:
13105: =item B<$context> role change context (shown in User Management Logs display in a course)
13106:
13107: =item B<$inststatus> institutional status of user - : separated string of escaped status types
13108:
13109: =item B<$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.
13110:
13111: =back
13112:
13113: =item *
13114:
13115: modify_student_enrollment
13116:
13117: Change a student's enrollment status in a class. The environment variable
13118: 'role.request.course' must be defined for this function to proceed.
13119:
13120: Inputs:
13121:
13122: =over 4
13123:
13124: =item $udom, student's domain
13125:
13126: =item $uname, student's name
13127:
13128: =item $uid, student's user id
13129:
13130: =item $first, student's first name
13131:
13132: =item $middle
13133:
13134: =item $last
13135:
13136: =item $gene
13137:
13138: =item $usec
13139:
13140: =item $end
13141:
13142: =item $start
13143:
13144: =item $type
13145:
13146: =item $locktype
13147:
13148: =item $cid
13149:
13150: =item $selfenroll
13151:
13152: =item $context
13153:
13154: =item $credits, number of credits student will earn from this class
13155:
13156: =back
13157:
13158:
13159: =item *
13160:
13161: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
13162: custom role; give a custom role to a user for the level given by URL. Specify
13163: name and domain of role author, and role name
13164:
13165: =item *
13166:
13167: revokerole($udom,$uname,$url,$role) : revoke a role for url
13168:
13169: =item *
13170:
13171: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
13172:
13173: =back
13174:
13175: =head2 Course Infomation
13176:
13177: =over 4
13178:
13179: =item *
13180:
13181: coursedescription($courseid,$options) : returns a hash of information about the
13182: specified course id, including all environment settings for the
13183: course, the description of the course will be in the hash under the
13184: key 'description'
13185:
13186: $options is an optional parameter that if supplied is a hash reference that controls
13187: what how this function works. It has the following key/values:
13188:
13189: =over 4
13190:
13191: =item freshen_cache
13192:
13193: If defined, and the environment cache for the course is valid, it is
13194: returned in the returned hash.
13195:
13196: =item one_time
13197:
13198: If defined, the last cache time is set to _now_
13199:
13200: =item user
13201:
13202: If defined, the supplied username is used instead of the current user.
13203:
13204:
13205: =back
13206:
13207: =item *
13208:
13209: resdata($name,$domain,$type,@which) : request for current parameter
13210: setting for a specific $type, where $type is either 'course' or 'user',
13211: @what should be a list of parameters to ask about. This routine caches
13212: answers for 10 minutes.
13213:
13214: =item *
13215:
13216: get_courseresdata($courseid, $domain) : dump the entire course resource
13217: data base, returning a hash that is keyed by the resource name and has
13218: values that are the resource value. I believe that the timestamps and
13219: versions are also returned.
13220:
13221: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
13222: supplemental content area. This routine caches the number of files for
13223: 10 minutes.
13224:
13225: =back
13226:
13227: =head2 Course Modification
13228:
13229: =over 4
13230:
13231: =item *
13232:
13233: writecoursepref($courseid,%prefs) : write preferences (environment
13234: database) for a course
13235:
13236: =item *
13237:
13238: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
13239:
13240: =item *
13241:
13242: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
13243:
13244: =item *
13245:
13246: is_course($courseid), is_course($cdom, $cnum)
13247:
13248: Accepts either a combined $courseid (in the form of domain_courseid) or the
13249: two component version $cdom, $cnum. It checks if the specified course exists.
13250:
13251: Returns:
13252: undef if the course doesn't exist, otherwise
13253: in scalar context the combined courseid.
13254: in list context the two components of the course identifier, domain and
13255: courseid.
13256:
13257: =back
13258:
13259: =head2 Resource Subroutines
13260:
13261: =over 4
13262:
13263: =item *
13264:
13265: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
13266:
13267: =item *
13268:
13269: repcopy($filename) : subscribes to the requested file, and attempts to
13270: replicate from the owning library server, Might return
13271: 'unavailable', 'not_found', 'forbidden', 'ok', or
13272: 'bad_request', also attempts to grab the metadata for the
13273: resource. Expects the local filesystem pathname
13274: (/home/httpd/html/res/....)
13275:
13276: =back
13277:
13278: =head2 Resource Information
13279:
13280: =over 4
13281:
13282: =item *
13283:
13284: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
13285: and returns the value of a variety of different possible values,
13286: $varname should be a request string, and the other parameters can be
13287: used to specify who and what one is asking about. Ordinarily, $cid
13288: does not need to be specified, as it is retrived from
13289: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
13290: within lonuserstate::loadmap() when initializing a course, before
13291: $env{'request.course.id'} has been set, so it needs to be provided
13292: in that one case.
13293:
13294: Possible values for $varname are environment.lastname (or other item
13295: from the envirnment hash), user.name (or someother aspect about the
13296: user), resource.0.maxtries (or some other part and parameter of a
13297: resource)
13298:
13299: =item *
13300:
13301: directcondval($number) : get current value of a condition; reads from a state
13302: string
13303:
13304: =item *
13305:
13306: condval($condidx) : value of condition index based on state
13307:
13308: =item *
13309:
13310: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
13311: resource's metadata, $what should be either a specific key, or either
13312: 'keys' (to get a list of possible keys) or 'packages' to get a list of
13313: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
13314:
13315: this function automatically caches all requests
13316:
13317: =item *
13318:
13319: metadata_query($query,$custom,$customshow) : make a metadata query against the
13320: network of library servers; returns file handle of where SQL and regex results
13321: will be stored for query
13322:
13323: =item *
13324:
13325: symbread($filename) : return symbolic list entry (filename argument optional);
13326: returns the data handle
13327:
13328: =item *
13329:
13330: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
13331: and is a possible symb for the URL in $thisfn, and if is an encrypted
13332: resource that the user accessed using /enc/ returns a 1 on success, 0
13333: on failure, user must be in a course, as it assumes the existence of
13334: the course initial hash, and uses $env('request.course.id'}. The third
13335: arg is an optional reference to a scalar. If this arg is passed in the
13336: call to symbverify, it will be set to 1 if the symb has been set to be
13337: encrypted; otherwise it will be null.
13338:
13339: =item *
13340:
13341: symbclean($symb) : removes versions numbers from a symb, returns the
13342: cleaned symb
13343:
13344: =item *
13345:
13346: is_on_map($uri) : checks if the $uri is somewhere on the current
13347: course map, user must be in a course for it to work.
13348:
13349: =item *
13350:
13351: numval($salt) : return random seed value (addend for rndseed)
13352:
13353: =item *
13354:
13355: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
13356: a random seed, all arguments are optional, if they aren't sent it uses the
13357: environment to derive them. Note: if symb isn't sent and it can't get one
13358: from &symbread it will use the current time as its return value
13359:
13360: =item *
13361:
13362: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
13363: unfakeable, receipt
13364:
13365: =item *
13366:
13367: receipt() : API to ireceipt working off of env values; given out to users
13368:
13369: =item *
13370:
13371: countacc($url) : count the number of accesses to a given URL
13372:
13373: =item *
13374:
13375: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13376:
13377: =item *
13378:
13379: checkin($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 $tcrsid)
13380:
13381: =item *
13382:
13383: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13384:
13385: =item *
13386:
13387: devalidate($symb) : devalidate temporary spreadsheet calculations,
13388: forcing spreadsheet to reevaluate the resource scores next time.
13389:
13390: =item *
13391:
13392: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13393: when viewing in course context.
13394:
13395: input: six args -- filename (decluttered), course number, course domain,
13396: url, symb (if registered) and group (if this is a
13397: group item -- e.g., bulletin board, group page etc.).
13398:
13399: output: array of five scalars --
13400: $cfile -- url for file editing if editable on current server
13401: $home -- homeserver of resource (i.e., for author if published,
13402: or course if uploaded.).
13403: $switchserver -- 1 if server switch will be needed.
13404: $forceedit -- 1 if icon/link should be to go to edit mode
13405: $forceview -- 1 if icon/link should be to go to view mode
13406:
13407: =item *
13408:
13409: is_course_upload($file,$cnum,$cdom)
13410:
13411: Used in course context to determine if current file was uploaded to
13412: the course (i.e., would be found in /userfiles/docs on the course's
13413: homeserver.
13414:
13415: input: 3 args -- filename (decluttered), course number and course domain.
13416: output: boolean -- 1 if file was uploaded.
13417:
13418: =back
13419:
13420: =head2 Storing/Retreiving Data
13421:
13422: =over 4
13423:
13424: =item *
13425:
13426: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
13427: permanently for this url; hashref needs to be given and should be a \%hashname;
13428: the remaining args aren't required and if they aren't passed or are '' they will
13429: be derived from the env (with the exception of $laststore, which is an
13430: optional arg used when a user's submission is stored in grading).
13431: $laststore is $version=$timestamp, where $version is the most recent version
13432: number retrieved for the corresponding $symb in the $namespace db file, and
13433: $timestamp is the timestamp for that transaction (UNIX time).
13434: $laststore is currently only passed when cstore() is called by
13435: structuretags::finalize_storage().
13436:
13437: =item *
13438:
13439: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
13440: but uses critical subroutine
13441:
13442: =item *
13443:
13444: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
13445: all args are optional
13446:
13447: =item *
13448:
13449: dumpstore($namespace,$udom,$uname,$regexp,$range) :
13450: dumps the complete (or key matching regexp) namespace into a hash
13451: ($udom, $uname, $regexp, $range are optional) for a namespace that is
13452: normally &store()ed into
13453:
13454: $range should be either an integer '100' (give me the first 100
13455: matching records)
13456: or be two integers sperated by a - with no spaces
13457: '30-50' (give me the 30th through the 50th matching
13458: records)
13459:
13460:
13461: =item *
13462:
13463: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
13464: replaces a &store() version of data with a replacement set of data
13465: for a particular resource in a namespace passed in the $storehash hash
13466: reference. If $tolog is true, the transaction is logged in the courselog
13467: with an action=PUTSTORE.
13468:
13469: =item *
13470:
13471: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13472: works very similar to store/cstore, but all data is stored in a
13473: temporary location and can be reset using tmpreset, $storehash should
13474: be a hash reference, returns nothing on success
13475:
13476: =item *
13477:
13478: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13479: similar to restore, but all data is stored in a temporary location and
13480: can be reset using tmpreset. Returns a hash of values on success,
13481: error string otherwise.
13482:
13483: =item *
13484:
13485: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13486: deltes all keys for $symb form the temporary storage hash.
13487:
13488: =item *
13489:
13490: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13491: reference filled in from namesp ($udom and $uname are optional)
13492:
13493: =item *
13494:
13495: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13496: namesp ($udom and $uname are optional)
13497:
13498: =item *
13499:
13500: dump($namespace,$udom,$uname,$regexp,$range) :
13501: dumps the complete (or key matching regexp) namespace into a hash
13502: ($udom, $uname, $regexp, $range are optional)
13503:
13504: $range should be either an integer '100' (give me the first 100
13505: matching records)
13506: or be two integers sperated by a - with no spaces
13507: '30-50' (give me the 30th through the 50th matching
13508: records)
13509: =item *
13510:
13511: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13512: $store can be a scalar, an array reference, or if the amount to be
13513: incremented is > 1, a hash reference.
13514:
13515: ($udom and $uname are optional)
13516:
13517: =item *
13518:
13519: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13520: ($udom and $uname are optional)
13521:
13522: =item *
13523:
13524: cput($namespace,$storehash,$udom,$uname) : critical put
13525: ($udom and $uname are optional)
13526:
13527: =item *
13528:
13529: newput($namespace,$storehash,$udom,$uname) :
13530:
13531: Attempts to store the items in the $storehash, but only if they don't
13532: currently exist, if this succeeds you can be certain that you have
13533: successfully created a new key value pair in the $namespace db.
13534:
13535:
13536: Args:
13537: $namespace: name of database to store values to
13538: $storehash: hashref to store to the db
13539: $udom: (optional) domain of user containing the db
13540: $uname: (optional) name of user caontaining the db
13541:
13542: Returns:
13543: 'ok' -> succeeded in storing all keys of $storehash
13544: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13545: least <key> already existed in the db (other
13546: requested keys may also already exist)
13547: 'error: <msg>' -> unable to tie the DB or other error occurred
13548: 'con_lost' -> unable to contact request server
13549: 'refused' -> action was not allowed by remote machine
13550:
13551:
13552: =item *
13553:
13554: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13555: reference filled in from namesp (encrypts the return communication)
13556: ($udom and $uname are optional)
13557:
13558: =item *
13559:
13560: log($udom,$name,$home,$message) : write to permanent log for user; use
13561: critical subroutine
13562:
13563: =item *
13564:
13565: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13566: array reference filled in from namespace found in domain level on either
13567: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13568:
13569: =item *
13570:
13571: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13572: domain level either on specified domain server ($uhome) or primary domain
13573: server ($udom and $uhome are optional)
13574:
13575: =item *
13576:
13577: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
13578: for: authentication, language, quotas, timezone, date locale, and portal URL in
13579: the target domain.
13580:
13581: May also include additional key => value pairs for the following groups:
13582:
13583: =over
13584:
13585: =item
13586: disk quotas (MB allocated by default to portfolios and authoring spaces).
13587:
13588: =over
13589:
13590: =item defaultquota, authorquota
13591:
13592: =back
13593:
13594: =item
13595: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
13596: portfolio for users).
13597:
13598: =over
13599:
13600: =item
13601: aboutme, blog, webdav, portfolio
13602:
13603: =back
13604:
13605: =item
13606: requestcourses: ability to request courses, and how requests are processed.
13607:
13608: =over
13609:
13610: =item
13611: official, unofficial, community, textbook
13612:
13613: =back
13614:
13615: =item
13616: inststatus: types of institutional affiliation, and order in which they are displayed.
13617:
13618: =over
13619:
13620: =item
13621: inststatustypes, inststatusorder, inststatusguest
13622:
13623: =back
13624:
13625: =item
13626: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
13627: for course's uploaded content.
13628:
13629: =over
13630:
13631: =item
13632: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
13633: communityquota, textbookquota
13634:
13635: =back
13636:
13637: =item
13638: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
13639: on your servers.
13640:
13641: =over
13642:
13643: =item
13644: remotesessions, hostedsessions
13645:
13646: =back
13647:
13648: =back
13649:
13650: In cases where a domain coordinator has never used the "Set Domain Configuration"
13651: utility to create a configuration.db file on a domain's primary library server
13652: only the following domain defaults: auth_def, auth_arg_def, lang_def
13653: -- corresponding values are authentication type (internal, krb4, krb5,
13654: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
13655: will be available. Values are retrieved from cache (if current), unless the
13656: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
13657: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
13658:
13659: Typical usage:
13660:
13661: %domdefaults = &get_domain_defaults($target_domain);
13662:
13663: =back
13664:
13665: =head2 Network Status Functions
13666:
13667: =over 4
13668:
13669: =item *
13670:
13671: dirlist() : return directory list based on URI (first arg).
13672:
13673: Inputs: 1 required, 5 optional.
13674:
13675: =over
13676:
13677: =item
13678: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13679:
13680: =item
13681: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13682:
13683: =item
13684: $username - username of user/course to be listed. Extracted from $uri if absent.
13685:
13686: =item
13687: $getpropath - boolean: 1 if prepend path using &propath().
13688:
13689: =item
13690: $getuserdir - boolean: 1 if prepend path for "userfiles".
13691:
13692: =item
13693: $alternateRoot - path to prepend in place of path from $uri.
13694:
13695: =back
13696:
13697: Returns: Array of up to two items.
13698:
13699: =over
13700:
13701: a reference to an array of files/subdirectories
13702:
13703: =over
13704:
13705: Each element in the array of files/subdirectories is a & separated list of
13706: item name and the result of running stat on the item. If dirlist was requested
13707: for a file instead of a directory, the item name will be ''. For a directory
13708: listing, if the item is a metadata file, the element will end &N&M
13709: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13710: default copyright set (1).
13711:
13712: =back
13713:
13714: a scalar containing error condition (if encountered).
13715:
13716: =over
13717:
13718: =item
13719: no_host (no homeserver identified for $username:$domain).
13720:
13721: =item
13722: no_such_host (server contacted for listing not identified as valid host).
13723:
13724: =item
13725: con_lost (connection to remote server failed).
13726:
13727: =item
13728: refused (invalid $username:$domain received on lond side).
13729:
13730: =item
13731: no_such_dir (directory at specified path on lond side does not exist).
13732:
13733: =item
13734: empty (directory at specified path on lond side is empty).
13735:
13736: =over
13737:
13738: This is currently not encountered because the &ls3, &ls2,
13739: &ls (_handler) routines on the lond side do not filter out
13740: . and .. from a directory listing.
13741:
13742: =back
13743:
13744: =back
13745:
13746: =back
13747:
13748: =item *
13749:
13750: spareserver() : find server with least workload from spare.tab
13751:
13752:
13753: =item *
13754:
13755: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13756: if there is no corresponding loncapa host.
13757:
13758: =back
13759:
13760:
13761: =head2 Apache Request
13762:
13763: =over 4
13764:
13765: =item *
13766:
13767: ssi($url,%hash) : server side include, does a complete request cycle on url to
13768: localhost, posts hash
13769:
13770: =back
13771:
13772: =head2 Data to String to Data
13773:
13774: =over 4
13775:
13776: =item *
13777:
13778: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13779: and '&' separators, supports elements that are arrayrefs and hashrefs
13780:
13781: =item *
13782:
13783: hashref2str($hashref) : convert a hashref into a string complete with
13784: escaping and '=' and '&' separators, supports elements that are
13785: arrayrefs and hashrefs
13786:
13787: =item *
13788:
13789: arrayref2str($arrayref) : convert an arrayref into a string complete
13790: with escaping and '&' separators, supports elements that are arrayrefs
13791: and hashrefs
13792:
13793: =item *
13794:
13795: str2hash($string) : convert string to hash using unescaping and
13796: splitting on '=' and '&', supports elements that are arrayrefs and
13797: hashrefs
13798:
13799: =item *
13800:
13801: str2array($string) : convert string to hash using unescaping and
13802: splitting on '&', supports elements that are arrayrefs and hashrefs
13803:
13804: =back
13805:
13806: =head2 Logging Routines
13807:
13808:
13809: These routines allow one to make log messages in the lonnet.log and
13810: lonnet.perm logfiles.
13811:
13812: =over 4
13813:
13814: =item *
13815:
13816: logtouch() : make sure the logfile, lonnet.log, exists
13817:
13818: =item *
13819:
13820: logthis() : append message to the normal lonnet.log file, it gets
13821: preiodically rolled over and deleted.
13822:
13823: =item *
13824:
13825: logperm() : append a permanent message to lonnet.perm.log, this log
13826: file never gets deleted by any automated portion of the system, only
13827: messages of critical importance should go in here.
13828:
13829:
13830: =back
13831:
13832: =head2 General File Helper Routines
13833:
13834: =over 4
13835:
13836: =item *
13837:
13838: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13839: (a) files in /uploaded
13840: (i) If a local copy of the file exists -
13841: compares modification date of local copy with last-modified date for
13842: definitive version stored on home server for course. If local copy is
13843: stale, requests a new version from the home server and stores it.
13844: If the original has been removed from the home server, then local copy
13845: is unlinked.
13846: (ii) If local copy does not exist -
13847: requests the file from the home server and stores it.
13848:
13849: If $caller is 'uploadrep':
13850: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13851: for request for files originally uploaded via DOCS.
13852: - returns 'ok' if fresh local copy now available, -1 otherwise.
13853:
13854: Otherwise:
13855: This indicates a call from the content generation phase of the request.
13856: - returns the entire contents of the file or -1.
13857:
13858: (b) files in /res
13859: - returns the entire contents of a file or -1;
13860: it properly subscribes to and replicates the file if neccessary.
13861:
13862:
13863: =item *
13864:
13865: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13866: reference
13867:
13868: returns either a stat() list of data about the file or an empty list
13869: if the file doesn't exist or couldn't find out about it (connection
13870: problems or user unknown)
13871:
13872: =item *
13873:
13874: filelocation($dir,$file) : returns file system location of a file
13875: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13876: directory that relative $file lookups are to looked in ($dir of /a/dir
13877: and a file of ../bob will become /a/bob)
13878:
13879: =item *
13880:
13881: hreflocation($dir,$file) : returns file system location or a URL; same as
13882: filelocation except for hrefs
13883:
13884: =item *
13885:
13886: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
13887: also removes beginning /home/httpd/html unless /priv/ follows it.
13888:
13889: =back
13890:
13891: =head2 Usererfile file routines (/uploaded*)
13892:
13893: =over 4
13894:
13895: =item *
13896:
13897: userfileupload(): main rotine for putting a file in a user or course's
13898: filespace, arguments are,
13899:
13900: formname - required - this is the name of the element in $env where the
13901: filename, and the contents of the file to create/modifed exist
13902: the filename is in $env{'form.'.$formname.'.filename'} and the
13903: contents of the file is located in $env{'form.'.$formname}
13904: context - if coursedoc, store the file in the course of the active role
13905: of the current user;
13906: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13907: if 'canceloverwrite': delete file in tmp/overwrites directory
13908: subdir - required - subdirectory to put the file in under ../userfiles/
13909: if undefined, it will be placed in "unknown"
13910:
13911: (This routine calls clean_filename() to remove any dangerous
13912: characters from the filename, and then calls finuserfileupload() to
13913: complete the transaction)
13914:
13915: returns either the url of the uploaded file (/uploaded/....) if successful
13916: and /adm/notfound.html if unsuccessful
13917:
13918: =item *
13919:
13920: clean_filename(): routine for cleaing a filename up for storage in
13921: userfile space, argument is:
13922:
13923: filename - proposed filename
13924:
13925: returns: the new clean filename
13926:
13927: =item *
13928:
13929: finishuserfileupload(): routine that creates and sends the file to
13930: userspace, probably shouldn't be called directly
13931:
13932: docuname: username or courseid of destination for the file
13933: docudom: domain of user/course of destination for the file
13934: formname: same as for userfileupload()
13935: fname: filename (including subdirectories) for the file
13936: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13937: allfiles: reference to hash used to store objects found by parser
13938: codebase: reference to hash used for codebases of java objects found by parser
13939: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13940: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13941: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13942: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13943: context: if 'overwrite', will move the uploaded file from its temporary location to
13944: userfiles to facilitate overwriting a previously uploaded file with same name.
13945: mimetype: reference to scalar to accommodate mime type determined
13946: from File::MMagic if $parser = parse.
13947:
13948: returns either the url of the uploaded file (/uploaded/....) if successful
13949: and /adm/notfound.html if unsuccessful (or an error message if context
13950: was 'overwrite').
13951:
13952:
13953: =item *
13954:
13955: renameuserfile(): renames an existing userfile to a new name
13956:
13957: Args:
13958: docuname: username or courseid of destination for the file
13959: docudom: domain of user/course of destination for the file
13960: old: current file name (including any subdirs under userfiles)
13961: new: desired file name (including any subdirs under userfiles)
13962:
13963: =item *
13964:
13965: mkdiruserfile(): creates a directory is a userfiles dir
13966:
13967: Args:
13968: docuname: username or courseid of destination for the file
13969: docudom: domain of user/course of destination for the file
13970: dir: dir to create (including any subdirs under userfiles)
13971:
13972: =item *
13973:
13974: removeuserfile(): removes a file that exists in userfiles
13975:
13976: Args:
13977: docuname: username or courseid of destination for the file
13978: docudom: domain of user/course of destination for the file
13979: fname: filname to delete (including any subdirs under userfiles)
13980:
13981: =item *
13982:
13983: removeuploadedurl(): convience function for removeuserfile()
13984:
13985: Args:
13986: url: a full /uploaded/... url to delete
13987:
13988: =item *
13989:
13990: get_portfile_permissions():
13991: Args:
13992: domain: domain of user or course contain the portfolio files
13993: user: name of user or num of course contain the portfolio files
13994: Returns:
13995: hashref of a dump of the proper file_permissions.db
13996:
13997:
13998: =item *
13999:
14000: get_access_controls():
14001:
14002: Args:
14003: current_permissions: the hash ref returned from get_portfile_permissions()
14004: group: (optional) the group you want the files associated with
14005: file: (optional) the file you want access info on
14006:
14007: Returns:
14008: a hash (keys are file names) of hashes containing
14009: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
14010: values are XML containing access control settings (see below)
14011:
14012: Internal notes:
14013:
14014: access controls are stored in file_permissions.db as key=value pairs.
14015: key -> path to file/file_name\0uniqueID:scope_end_start
14016: where scope -> public,guest,course,group,domains or users.
14017: end -> UNIX time for end of access (0 -> no end date)
14018: start -> UNIX time for start of access
14019:
14020: value -> XML description of access control
14021: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
14022: <start></start>
14023: <end></end>
14024:
14025: <password></password> for scope type = guest
14026:
14027: <domain></domain> for scope type = course or group
14028: <number></number>
14029: <roles id="">
14030: <role></role>
14031: <access></access>
14032: <section></section>
14033: <group></group>
14034: </roles>
14035:
14036: <dom></dom> for scope type = domains
14037:
14038: <users> for scope type = users
14039: <user>
14040: <uname></uname>
14041: <udom></udom>
14042: </user>
14043: </users>
14044: </scope>
14045:
14046: Access data is also aggregated for each file in an additional key=value pair:
14047: key -> path to file/file_name\0accesscontrol
14048: value -> reference to hash
14049: hash contains key = value pairs
14050: where key = uniqueID:scope_end_start
14051: value = UNIX time record was last updated
14052:
14053: Used to improve speed of look-ups of access controls for each file.
14054:
14055: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
14056:
14057: =item *
14058:
14059: modify_access_controls():
14060:
14061: Modifies access controls for a portfolio file
14062: Args
14063: 1. file name
14064: 2. reference to hash of required changes,
14065: 3. domain
14066: 4. username
14067: where domain,username are the domain of the portfolio owner
14068: (either a user or a course)
14069:
14070: Returns:
14071: 1. result of additions or updates ('ok' or 'error', with error message).
14072: 2. result of deletions ('ok' or 'error', with error message).
14073: 3. reference to hash of any new or updated access controls.
14074: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
14075: key = integer (inbound ID)
14076: value = uniqueID
14077:
14078: =item *
14079:
14080: get_timebased_id():
14081:
14082: Attempts to get a unique timestamp-based suffix for use with items added to a
14083: course via the Course Editor (e.g., folders, composite pages,
14084: group bulletin boards).
14085:
14086: Args: (first three required; six others optional)
14087:
14088: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
14089: docssequence, or name of group
14090:
14091: 2. keyid (alphanumeric): name of temporary locking key in hash,
14092: e.g., num, boardids
14093:
14094: 3. namespace: name of gdbm file used to store suffixes already assigned;
14095: file will be named nohist_namespace.db
14096:
14097: 4. cdom: domain of course; default is current course domain from %env
14098:
14099: 5. cnum: course number; default is current course number from %env
14100:
14101: 6. idtype: set to concat if an additional digit is to be appended to the
14102: unix timestamp to form the suffix, if the plain timestamp is already
14103: in use. Default is to not do this, but simply increment the unix
14104: timestamp by 1 until a unique key is obtained.
14105:
14106: 7. who: holder of locking key; defaults to user:domain for user.
14107:
14108: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
14109: retrying); default is 3.
14110:
14111: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
14112:
14113: Returns:
14114:
14115: 1. suffix obtained (numeric)
14116:
14117: 2. result of deleting locking key (ok if deleted, or lock never obtained)
14118:
14119: 3. error: contains (localized) error message if an error occurred.
14120:
14121:
14122: =back
14123:
14124: =head2 HTTP Helper Routines
14125:
14126: =over 4
14127:
14128: =item *
14129:
14130: escape() : unpack non-word characters into CGI-compatible hex codes
14131:
14132: =item *
14133:
14134: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
14135:
14136: =back
14137:
14138: =head1 PRIVATE SUBROUTINES
14139:
14140: =head2 Underlying communication routines (Shouldn't call)
14141:
14142: =over 4
14143:
14144: =item *
14145:
14146: subreply() : tries to pass a message to lonc, returns con_lost if incapable
14147:
14148: =item *
14149:
14150: reply() : uses subreply to send a message to remote machine, logs all failures
14151:
14152: =item *
14153:
14154: critical() : passes a critical message to another server; if cannot
14155: get through then place message in connection buffer directory and
14156: returns con_delayed, if incapable of saving message, returns
14157: con_failed
14158:
14159: =item *
14160:
14161: reconlonc() : tries to reconnect lonc client processes.
14162:
14163: =back
14164:
14165: =head2 Resource Access Logging
14166:
14167: =over 4
14168:
14169: =item *
14170:
14171: flushcourselogs() : flush (save) buffer logs and access logs
14172:
14173: =item *
14174:
14175: courselog($what) : save message for course in hash
14176:
14177: =item *
14178:
14179: courseacclog($what) : save message for course using &courselog(). Perform
14180: special processing for specific resource types (problems, exams, quizzes, etc).
14181:
14182: =item *
14183:
14184: goodbye() : flush course logs and log shutting down; it is called in srm.conf
14185: as a PerlChildExitHandler
14186:
14187: =back
14188:
14189: =head2 Other
14190:
14191: =over 4
14192:
14193: =item *
14194:
14195: symblist($mapname,%newhash) : update symbolic storage links
14196:
14197: =back
14198:
14199: =cut
14200:
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