1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1172 2012/05/21 18:35:30 bisitz Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
80: %managerstab);
81:
82: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
83: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
84: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
85: %courseownerbuf, %coursetypebuf,$locknum);
86:
87: use IO::Socket;
88: use GDBM_File;
89: use HTML::LCParser;
90: use Fcntl qw(:flock);
91: use Storable qw(thaw nfreeze);
92: use Time::HiRes qw( gettimeofday tv_interval );
93: use Cache::Memcached;
94: use Digest::MD5;
95: use Math::Random;
96: use File::MMagic;
97: use LONCAPA qw(:DEFAULT :match);
98: use LONCAPA::Configuration;
99: use LONCAPA::lonmetadata;
100: use LONCAPA::Lond;
101:
102: use File::Copy;
103:
104: my $readit;
105: my $max_connection_retries = 10; # Or some such value.
106:
107: require Exporter;
108:
109: our @ISA = qw (Exporter);
110: our @EXPORT = qw(%env);
111:
112:
113: # --------------------------------------------------------------------- Logging
114: {
115: my $logid;
116: sub instructor_log {
117: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
118: if (($cnum eq '') || ($cdom eq '')) {
119: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
120: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
121: }
122: $logid++;
123: my $now = time();
124: my $id=$now.'00000'.$$.'00000'.$logid;
125: return &Apache::lonnet::put('nohist_'.$hash_name,
126: { $id => {
127: 'exe_uname' => $env{'user.name'},
128: 'exe_udom' => $env{'user.domain'},
129: 'exe_time' => $now,
130: 'exe_ip' => $ENV{'REMOTE_ADDR'},
131: 'delflag' => $delflag,
132: 'logentry' => $storehash,
133: 'uname' => $uname,
134: 'udom' => $udom,
135: }
136: },$cdom,$cnum);
137: }
138: }
139:
140: sub logtouch {
141: my $execdir=$perlvar{'lonDaemons'};
142: unless (-e "$execdir/logs/lonnet.log") {
143: open(my $fh,">>$execdir/logs/lonnet.log");
144: close $fh;
145: }
146: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
147: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
148: }
149:
150: sub logthis {
151: my $message=shift;
152: my $execdir=$perlvar{'lonDaemons'};
153: my $now=time;
154: my $local=localtime($now);
155: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
156: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
157: print $fh $logstring;
158: close($fh);
159: }
160: return 1;
161: }
162:
163: sub logperm {
164: my $message=shift;
165: my $execdir=$perlvar{'lonDaemons'};
166: my $now=time;
167: my $local=localtime($now);
168: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
169: print $fh "$now:$message:$local\n";
170: close($fh);
171: }
172: return 1;
173: }
174:
175: sub create_connection {
176: my ($hostname,$lonid) = @_;
177: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
178: Type => SOCK_STREAM,
179: Timeout => 10);
180: return 0 if (!$client);
181: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
182: my $result = <$client>;
183: chomp($result);
184: return 1 if ($result eq 'done');
185: return 0;
186: }
187:
188: sub get_server_timezone {
189: my ($cnum,$cdom) = @_;
190: my $home=&homeserver($cnum,$cdom);
191: if ($home ne 'no_host') {
192: my $cachetime = 24*3600;
193: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
194: if (defined($cached)) {
195: return $timezone;
196: } else {
197: my $timezone = &reply('servertimezone',$home);
198: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
199: }
200: }
201: }
202:
203: sub get_server_distarch {
204: my ($lonhost,$ignore_cache) = @_;
205: if (defined($lonhost)) {
206: if (!defined(&hostname($lonhost))) {
207: return;
208: }
209: my $cachetime = 12*3600;
210: if (!$ignore_cache) {
211: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
212: if (defined($cached)) {
213: return $distarch;
214: }
215: }
216: my $rep = &reply('serverdistarch',$lonhost);
217: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
218: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
219: $rep eq '') {
220: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
221: }
222: }
223: return;
224: }
225:
226: sub get_server_loncaparev {
227: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
228: if (defined($lonhost)) {
229: if (!defined(&hostname($lonhost))) {
230: undef($lonhost);
231: }
232: }
233: if (!defined($lonhost)) {
234: if (defined(&domain($dom,'primary'))) {
235: $lonhost=&domain($dom,'primary');
236: if ($lonhost eq 'no_host') {
237: undef($lonhost);
238: }
239: }
240: }
241: if (defined($lonhost)) {
242: my $cachetime = 12*3600;
243: if (!$ignore_cache) {
244: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
245: if (defined($cached)) {
246: return $loncaparev;
247: }
248: }
249: my ($answer,$loncaparev);
250: my @ids=¤t_machine_ids();
251: if (grep(/^\Q$lonhost\E$/,@ids)) {
252: $answer = $perlvar{'lonVersion'};
253: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
254: $loncaparev = $1;
255: }
256: } else {
257: $answer = &reply('serverloncaparev',$lonhost);
258: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
259: if ($caller eq 'loncron') {
260: my $ua=new LWP::UserAgent;
261: $ua->timeout(4);
262: my $protocol = $protocol{$lonhost};
263: $protocol = 'http' if ($protocol ne 'https');
264: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
265: my $request=new HTTP::Request('GET',$url);
266: my $response=$ua->request($request);
267: unless ($response->is_error()) {
268: my $content = $response->content;
269: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
270: $loncaparev = $1;
271: }
272: }
273: } else {
274: $loncaparev = $loncaparevs{$lonhost};
275: }
276: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
277: $loncaparev = $1;
278: }
279: }
280: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
281: }
282: }
283:
284: sub get_server_homeID {
285: my ($hostname,$ignore_cache,$caller) = @_;
286: unless ($ignore_cache) {
287: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
288: if (defined($cached)) {
289: return $serverhomeID;
290: }
291: }
292: my $cachetime = 12*3600;
293: my $serverhomeID;
294: if ($caller eq 'loncron') {
295: my @machine_ids = &machine_ids($hostname);
296: foreach my $id (@machine_ids) {
297: my $response = &reply('serverhomeID',$id);
298: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
299: $serverhomeID = $response;
300: last;
301: }
302: }
303: if ($serverhomeID eq '') {
304: $serverhomeID = $machine_ids[-1];
305: }
306: } else {
307: $serverhomeID = $serverhomeIDs{$hostname};
308: }
309: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
310: }
311:
312: sub get_remote_globals {
313: my ($lonhost,$whathash,$ignore_cache) = @_;
314: my ($result,%returnhash,%whatneeded);
315: if (ref($whathash) eq 'HASH') {
316: foreach my $what (sort(keys(%{$whathash}))) {
317: my $hashid = $lonhost.'-'.$what;
318: my ($response,$cached);
319: unless ($ignore_cache) {
320: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
321: }
322: if (defined($cached)) {
323: $returnhash{$what} = $response;
324: } else {
325: $whatneeded{$what} = 1;
326: }
327: }
328: if (keys(%whatneeded) == 0) {
329: $result = 'ok';
330: } else {
331: my $requested = &freeze_escape(\%whatneeded);
332: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
333: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
334: ($rep eq 'unknown_cmd')) {
335: $result = $rep;
336: } else {
337: $result = 'ok';
338: my @pairs=split(/\&/,$rep);
339: foreach my $item (@pairs) {
340: my ($key,$value)=split(/=/,$item,2);
341: my $what = &unescape($key);
342: my $hashid = $lonhost.'-'.$what;
343: $returnhash{$what}=&thaw_unescape($value);
344: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
345: }
346: }
347: }
348: }
349: return ($result,\%returnhash);
350: }
351:
352: sub remote_devalidate_cache {
353: my ($lonhost,$name,$id) = @_;
354: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
355: return $response;
356: }
357:
358: # -------------------------------------------------- Non-critical communication
359: sub subreply {
360: my ($cmd,$server)=@_;
361: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
362: #
363: # With loncnew process trimming, there's a timing hole between lonc server
364: # process exit and the master server picking up the listen on the AF_UNIX
365: # socket. In that time interval, a lock file will exist:
366:
367: my $lockfile=$peerfile.".lock";
368: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
369: sleep(1);
370: }
371: # At this point, either a loncnew parent is listening or an old lonc
372: # or loncnew child is listening so we can connect or everything's dead.
373: #
374: # We'll give the connection a few tries before abandoning it. If
375: # connection is not possible, we'll con_lost back to the client.
376: #
377: my $client;
378: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
379: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
380: Type => SOCK_STREAM,
381: Timeout => 10);
382: if ($client) {
383: last; # Connected!
384: } else {
385: &create_connection(&hostname($server),$server);
386: }
387: sleep(1); # Try again later if failed connection.
388: }
389: my $answer;
390: if ($client) {
391: print $client "sethost:$server:$cmd\n";
392: $answer=<$client>;
393: if (!$answer) { $answer="con_lost"; }
394: chomp($answer);
395: } else {
396: $answer = 'con_lost'; # Failed connection.
397: }
398: return $answer;
399: }
400:
401: sub reply {
402: my ($cmd,$server)=@_;
403: unless (defined(&hostname($server))) { return 'no_such_host'; }
404: my $answer=subreply($cmd,$server);
405: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
406: &logthis("<font color=\"blue\">WARNING:".
407: " $cmd to $server returned $answer</font>");
408: }
409: return $answer;
410: }
411:
412: # ----------------------------------------------------------- Send USR1 to lonc
413:
414: sub reconlonc {
415: my ($lonid) = @_;
416: my $hostname = &hostname($lonid);
417: if ($lonid) {
418: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
419: if ($hostname && -e $peerfile) {
420: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
421: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
422: Type => SOCK_STREAM,
423: Timeout => 10);
424: if ($client) {
425: print $client ("reset_retries\n");
426: my $answer=<$client>;
427: #reset just this one.
428: }
429: }
430: return;
431: }
432:
433: &logthis("Trying to reconnect lonc");
434: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
435: if (open(my $fh,"<$loncfile")) {
436: my $loncpid=<$fh>;
437: chomp($loncpid);
438: if (kill 0 => $loncpid) {
439: &logthis("lonc at pid $loncpid responding, sending USR1");
440: kill USR1 => $loncpid;
441: sleep 1;
442: } else {
443: &logthis(
444: "<font color=\"blue\">WARNING:".
445: " lonc at pid $loncpid not responding, giving up</font>");
446: }
447: } else {
448: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
449: }
450: }
451:
452: # ------------------------------------------------------ Critical communication
453:
454: sub critical {
455: my ($cmd,$server)=@_;
456: unless (&hostname($server)) {
457: &logthis("<font color=\"blue\">WARNING:".
458: " Critical message to unknown server ($server)</font>");
459: return 'no_such_host';
460: }
461: my $answer=reply($cmd,$server);
462: if ($answer eq 'con_lost') {
463: &reconlonc("$perlvar{'lonSockDir'}/$server");
464: my $answer=reply($cmd,$server);
465: if ($answer eq 'con_lost') {
466: my $now=time;
467: my $middlename=$cmd;
468: $middlename=substr($middlename,0,16);
469: $middlename=~s/\W//g;
470: my $dfilename=
471: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
472: $dumpcount++;
473: {
474: my $dfh;
475: if (open($dfh,">$dfilename")) {
476: print $dfh "$cmd\n";
477: close($dfh);
478: }
479: }
480: sleep 2;
481: my $wcmd='';
482: {
483: my $dfh;
484: if (open($dfh,"<$dfilename")) {
485: $wcmd=<$dfh>;
486: close($dfh);
487: }
488: }
489: chomp($wcmd);
490: if ($wcmd eq $cmd) {
491: &logthis("<font color=\"blue\">WARNING: ".
492: "Connection buffer $dfilename: $cmd</font>");
493: &logperm("D:$server:$cmd");
494: return 'con_delayed';
495: } else {
496: &logthis("<font color=\"red\">CRITICAL:"
497: ." Critical connection failed: $server $cmd</font>");
498: &logperm("F:$server:$cmd");
499: return 'con_failed';
500: }
501: }
502: }
503: return $answer;
504: }
505:
506: # ------------------------------------------- check if return value is an error
507:
508: sub error {
509: my ($result) = @_;
510: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
511: if ($2 == 2) { return undef; }
512: return $1;
513: }
514: return undef;
515: }
516:
517: sub convert_and_load_session_env {
518: my ($lonidsdir,$handle)=@_;
519: my @profile;
520: {
521: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
522: if (!$opened) {
523: return 0;
524: }
525: flock($idf,LOCK_SH);
526: @profile=<$idf>;
527: close($idf);
528: }
529: my %temp_env;
530: foreach my $line (@profile) {
531: if ($line !~ m/=/) {
532: return 0;
533: }
534: chomp($line);
535: my ($envname,$envvalue)=split(/=/,$line,2);
536: $temp_env{&unescape($envname)} = &unescape($envvalue);
537: }
538: unlink("$lonidsdir/$handle.id");
539: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
540: 0640)) {
541: %disk_env = %temp_env;
542: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
543: untie(%disk_env);
544: }
545: return 1;
546: }
547:
548: # ------------------------------------------- Transfer profile into environment
549: my $env_loaded;
550: sub transfer_profile_to_env {
551: my ($lonidsdir,$handle,$force_transfer) = @_;
552: if (!$force_transfer && $env_loaded) { return; }
553:
554: if (!defined($lonidsdir)) {
555: $lonidsdir = $perlvar{'lonIDsDir'};
556: }
557: if (!defined($handle)) {
558: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
559: }
560:
561: my $convert;
562: {
563: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
564: if (!$opened) {
565: return;
566: }
567: flock($idf,LOCK_SH);
568: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
569: &GDBM_READER(),0640)) {
570: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
571: untie(%disk_env);
572: } else {
573: $convert = 1;
574: }
575: }
576: if ($convert) {
577: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
578: &logthis("Failed to load session, or convert session.");
579: }
580: }
581:
582: my %remove;
583: while ( my $envname = each(%env) ) {
584: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
585: if ($time < time-300) {
586: $remove{$key}++;
587: }
588: }
589: }
590:
591: $env{'user.environment'} = "$lonidsdir/$handle.id";
592: $env_loaded=1;
593: foreach my $expired_key (keys(%remove)) {
594: &delenv($expired_key);
595: }
596: }
597:
598: # ---------------------------------------------------- Check for valid session
599: sub check_for_valid_session {
600: my ($r,$name) = @_;
601: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
602: if ($name eq '') {
603: $name = 'lonID';
604: }
605: my $lonid=$cookies{$name};
606: return undef if (!$lonid);
607:
608: my $handle=&LONCAPA::clean_handle($lonid->value);
609: my $lonidsdir;
610: if ($name eq 'lonDAV') {
611: $lonidsdir=$r->dir_config('lonDAVsessDir');
612: } else {
613: $lonidsdir=$r->dir_config('lonIDsDir');
614: }
615: return undef if (!-e "$lonidsdir/$handle.id");
616:
617: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
618: return undef if (!$opened);
619:
620: flock($idf,LOCK_SH);
621: my %disk_env;
622: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
623: &GDBM_READER(),0640)) {
624: return undef;
625: }
626:
627: if (!defined($disk_env{'user.name'})
628: || !defined($disk_env{'user.domain'})) {
629: return undef;
630: }
631: return $handle;
632: }
633:
634: sub timed_flock {
635: my ($file,$lock_type) = @_;
636: my $failed=0;
637: eval {
638: local $SIG{__DIE__}='DEFAULT';
639: local $SIG{ALRM}=sub {
640: $failed=1;
641: die("failed lock");
642: };
643: alarm(13);
644: flock($file,$lock_type);
645: alarm(0);
646: };
647: if ($failed) {
648: return undef;
649: } else {
650: return 1;
651: }
652: }
653:
654: # ---------------------------------------------------------- Append Environment
655:
656: sub appenv {
657: my ($newenv,$roles) = @_;
658: if (ref($newenv) eq 'HASH') {
659: foreach my $key (keys(%{$newenv})) {
660: my $refused = 0;
661: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
662: $refused = 1;
663: if (ref($roles) eq 'ARRAY') {
664: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
665: if (grep(/^\Q$role\E$/,@{$roles})) {
666: $refused = 0;
667: }
668: }
669: }
670: if ($refused) {
671: &logthis("<font color=\"blue\">WARNING: ".
672: "Attempt to modify environment ".$key." to ".$newenv->{$key}
673: .'</font>');
674: delete($newenv->{$key});
675: } else {
676: $env{$key}=$newenv->{$key};
677: }
678: }
679: my $opened = open(my $env_file,'+<',$env{'user.environment'});
680: if ($opened
681: && &timed_flock($env_file,LOCK_EX)
682: &&
683: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
684: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
685: while (my ($key,$value) = each(%{$newenv})) {
686: $disk_env{$key} = $value;
687: }
688: untie(%disk_env);
689: }
690: }
691: return 'ok';
692: }
693: # ----------------------------------------------------- Delete from Environment
694:
695: sub delenv {
696: my ($delthis,$regexp,$roles) = @_;
697: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
698: my $refused = 1;
699: if (ref($roles) eq 'ARRAY') {
700: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
701: if (grep(/^\Q$role\E$/,@{$roles})) {
702: $refused = 0;
703: }
704: }
705: if ($refused) {
706: &logthis("<font color=\"blue\">WARNING: ".
707: "Attempt to delete from environment ".$delthis);
708: return 'error';
709: }
710: }
711: my $opened = open(my $env_file,'+<',$env{'user.environment'});
712: if ($opened
713: && &timed_flock($env_file,LOCK_EX)
714: &&
715: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
716: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
717: foreach my $key (keys(%disk_env)) {
718: if ($regexp) {
719: if ($key=~/^$delthis/) {
720: delete($env{$key});
721: delete($disk_env{$key});
722: }
723: } else {
724: if ($key=~/^\Q$delthis\E/) {
725: delete($env{$key});
726: delete($disk_env{$key});
727: }
728: }
729: }
730: untie(%disk_env);
731: }
732: return 'ok';
733: }
734:
735: sub get_env_multiple {
736: my ($name) = @_;
737: my @values;
738: if (defined($env{$name})) {
739: # exists is it an array
740: if (ref($env{$name})) {
741: @values=@{ $env{$name} };
742: } else {
743: $values[0]=$env{$name};
744: }
745: }
746: return(@values);
747: }
748:
749: # ------------------------------------------------------------------- Locking
750:
751: sub set_lock {
752: my ($text)=@_;
753: $locknum++;
754: my $id=$$.'-'.$locknum;
755: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
756: 'session.lock.'.$id => $text});
757: return $id;
758: }
759:
760: sub get_locks {
761: my $num=0;
762: my %texts=();
763: foreach my $lock (split(/\,/,$env{'session.locks'})) {
764: if ($lock=~/\w/) {
765: $num++;
766: $texts{$lock}=$env{'session.lock.'.$lock};
767: }
768: }
769: return ($num,%texts);
770: }
771:
772: sub remove_lock {
773: my ($id)=@_;
774: my $newlocks='';
775: foreach my $lock (split(/\,/,$env{'session.locks'})) {
776: if (($lock=~/\w/) && ($lock ne $id)) {
777: $newlocks.=','.$lock;
778: }
779: }
780: &appenv({'session.locks' => $newlocks});
781: &delenv('session.lock.'.$id);
782: }
783:
784: sub remove_all_locks {
785: my $activelocks=$env{'session.locks'};
786: foreach my $lock (split(/\,/,$env{'session.locks'})) {
787: if ($lock=~/\w/) {
788: &remove_lock($lock);
789: }
790: }
791: }
792:
793:
794: # ------------------------------------------ Find out current server userload
795: sub userload {
796: my $numusers=0;
797: {
798: opendir(LONIDS,$perlvar{'lonIDsDir'});
799: my $filename;
800: my $curtime=time;
801: while ($filename=readdir(LONIDS)) {
802: next if ($filename eq '.' || $filename eq '..');
803: next if ($filename =~ /publicuser_\d+\.id/);
804: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
805: if ($curtime-$mtime < 1800) { $numusers++; }
806: }
807: closedir(LONIDS);
808: }
809: my $userloadpercent=0;
810: my $maxuserload=$perlvar{'lonUserLoadLim'};
811: if ($maxuserload) {
812: $userloadpercent=100*$numusers/$maxuserload;
813: }
814: $userloadpercent=sprintf("%.2f",$userloadpercent);
815: return $userloadpercent;
816: }
817:
818: # ------------------------------ Find server with least workload from spare.tab
819:
820: sub spareserver {
821: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
822: my $spare_server;
823: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
824: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
825: : $userloadpercent;
826: my ($uint_dom,$remotesessions);
827: if (($udom ne '') && (&domain($udom) ne '')) {
828: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
829: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
830: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
831: $remotesessions = $udomdefaults{'remotesessions'};
832: }
833: my $spareshash = &this_host_spares($udom);
834: if (ref($spareshash) eq 'HASH') {
835: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
836: foreach my $try_server (@{ $spareshash->{'primary'} }) {
837: if ($uint_dom) {
838: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
839: $try_server));
840: }
841: ($spare_server, $lowest_load) =
842: &compare_server_load($try_server, $spare_server, $lowest_load);
843: }
844: }
845:
846: my $found_server = ($spare_server ne '' && $lowest_load < 100);
847:
848: if (!$found_server) {
849: if (ref($spareshash->{'default'}) eq 'ARRAY') {
850: foreach my $try_server (@{ $spareshash->{'default'} }) {
851: if ($uint_dom) {
852: next unless (&spare_can_host($udom,$uint_dom,
853: $remotesessions,$try_server));
854: }
855: ($spare_server, $lowest_load) =
856: &compare_server_load($try_server, $spare_server, $lowest_load);
857: }
858: }
859: }
860: }
861:
862: if (!$want_server_name) {
863: my $protocol = 'http';
864: if ($protocol{$spare_server} eq 'https') {
865: $protocol = $protocol{$spare_server};
866: }
867: if (defined($spare_server)) {
868: my $hostname = &hostname($spare_server);
869: if (defined($hostname)) {
870: $spare_server = $protocol.'://'.$hostname;
871: }
872: }
873: }
874: return $spare_server;
875: }
876:
877: sub compare_server_load {
878: my ($try_server, $spare_server, $lowest_load) = @_;
879:
880: my $loadans = &reply('load', $try_server);
881: my $userloadans = &reply('userload',$try_server);
882:
883: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
884: return ($spare_server, $lowest_load); #didn't get a number from the server
885: }
886:
887: my $load;
888: if ($loadans =~ /\d/) {
889: if ($userloadans =~ /\d/) {
890: #both are numbers, pick the bigger one
891: $load = ($loadans > $userloadans) ? $loadans
892: : $userloadans;
893: } else {
894: $load = $loadans;
895: }
896: } else {
897: $load = $userloadans;
898: }
899:
900: if (($load =~ /\d/) && ($load < $lowest_load)) {
901: $spare_server = $try_server;
902: $lowest_load = $load;
903: }
904: return ($spare_server,$lowest_load);
905: }
906:
907: # --------------------------- ask offload servers if user already has a session
908: sub find_existing_session {
909: my ($udom,$uname) = @_;
910: my $spareshash = &this_host_spares($udom);
911: if (ref($spareshash) eq 'HASH') {
912: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
913: foreach my $try_server (@{ $spareshash->{'primary'} }) {
914: return $try_server if (&has_user_session($try_server, $udom, $uname));
915: }
916: }
917: if (ref($spareshash->{'default'}) eq 'ARRAY') {
918: foreach my $try_server (@{ $spareshash->{'default'} }) {
919: return $try_server if (&has_user_session($try_server, $udom, $uname));
920: }
921: }
922: }
923: return;
924: }
925:
926: # -------------------------------- ask if server already has a session for user
927: sub has_user_session {
928: my ($lonid,$udom,$uname) = @_;
929: my $result = &reply(join(':','userhassession',
930: map {&escape($_)} ($udom,$uname)),$lonid);
931: return 1 if ($result eq 'ok');
932:
933: return 0;
934: }
935:
936: # --------- determine least loaded server in a user's domain which allows login
937:
938: sub choose_server {
939: my ($udom,$checkloginvia) = @_;
940: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
941: my %servers = &get_servers($udom);
942: my $lowest_load = 30000;
943: my ($login_host,$hostname,$portal_path,$isredirect);
944: foreach my $lonhost (keys(%servers)) {
945: my $loginvia;
946: if ($checkloginvia) {
947: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
948: if ($loginvia) {
949: my ($server,$path) = split(/:/,$loginvia);
950: ($login_host, $lowest_load) =
951: &compare_server_load($server, $login_host, $lowest_load);
952: if ($login_host eq $server) {
953: $portal_path = $path;
954: $isredirect = 1;
955: }
956: } else {
957: ($login_host, $lowest_load) =
958: &compare_server_load($lonhost, $login_host, $lowest_load);
959: if ($login_host eq $lonhost) {
960: $portal_path = '';
961: $isredirect = '';
962: }
963: }
964: } else {
965: ($login_host, $lowest_load) =
966: &compare_server_load($lonhost, $login_host, $lowest_load);
967: }
968: }
969: if ($login_host ne '') {
970: $hostname = &hostname($login_host);
971: }
972: return ($login_host,$hostname,$portal_path,$isredirect);
973: }
974:
975: # --------------------------------------------- Try to change a user's password
976:
977: sub changepass {
978: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
979: $currentpass = &escape($currentpass);
980: $newpass = &escape($newpass);
981: my $lonhost = $perlvar{'lonHostID'};
982: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
983: $server);
984: if (! $answer) {
985: &logthis("No reply on password change request to $server ".
986: "by $uname in domain $udom.");
987: } elsif ($answer =~ "^ok") {
988: &logthis("$uname in $udom successfully changed their password ".
989: "on $server.");
990: } elsif ($answer =~ "^pwchange_failure") {
991: &logthis("$uname in $udom was unable to change their password ".
992: "on $server. The action was blocked by either lcpasswd ".
993: "or pwchange");
994: } elsif ($answer =~ "^non_authorized") {
995: &logthis("$uname in $udom did not get their password correct when ".
996: "attempting to change it on $server.");
997: } elsif ($answer =~ "^auth_mode_error") {
998: &logthis("$uname in $udom attempted to change their password despite ".
999: "not being locally or internally authenticated on $server.");
1000: } elsif ($answer =~ "^unknown_user") {
1001: &logthis("$uname in $udom attempted to change their password ".
1002: "on $server but were unable to because $server is not ".
1003: "their home server.");
1004: } elsif ($answer =~ "^refused") {
1005: &logthis("$server refused to change $uname in $udom password because ".
1006: "it was sent an unencrypted request to change the password.");
1007: } elsif ($answer =~ "invalid_client") {
1008: &logthis("$server refused to change $uname in $udom password because ".
1009: "it was a reset by e-mail originating from an invalid server.");
1010: }
1011: return $answer;
1012: }
1013:
1014: # ----------------------- Try to determine user's current authentication scheme
1015:
1016: sub queryauthenticate {
1017: my ($uname,$udom)=@_;
1018: my $uhome=&homeserver($uname,$udom);
1019: if (!$uhome) {
1020: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1021: return 'no_host';
1022: }
1023: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1024: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1025: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1026: }
1027: return $answer;
1028: }
1029:
1030: # --------- Try to authenticate user from domain's lib servers (first this one)
1031:
1032: sub authenticate {
1033: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1034: $upass=&escape($upass);
1035: $uname= &LONCAPA::clean_username($uname);
1036: my $uhome=&homeserver($uname,$udom,1);
1037: my $newhome;
1038: if ((!$uhome) || ($uhome eq 'no_host')) {
1039: # Maybe the machine was offline and only re-appeared again recently?
1040: &reconlonc();
1041: # One more
1042: $uhome=&homeserver($uname,$udom,1);
1043: if (($uhome eq 'no_host') && $checkdefauth) {
1044: if (defined(&domain($udom,'primary'))) {
1045: $newhome=&domain($udom,'primary');
1046: }
1047: if ($newhome ne '') {
1048: $uhome = $newhome;
1049: }
1050: }
1051: if ((!$uhome) || ($uhome eq 'no_host')) {
1052: &logthis("User $uname at $udom is unknown in authenticate");
1053: return 'no_host';
1054: }
1055: }
1056: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1057: if ($answer eq 'authorized') {
1058: if ($newhome) {
1059: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1060: return 'no_account_on_host';
1061: } else {
1062: &logthis("User $uname at $udom authorized by $uhome");
1063: return $uhome;
1064: }
1065: }
1066: if ($answer eq 'non_authorized') {
1067: &logthis("User $uname at $udom rejected by $uhome");
1068: return 'no_host';
1069: }
1070: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1071: return 'no_host';
1072: }
1073:
1074: sub can_host_session {
1075: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1076: my $canhost = 1;
1077: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1078: if (ref($remotesessions) eq 'HASH') {
1079: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1080: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1081: $canhost = 0;
1082: } else {
1083: $canhost = 1;
1084: }
1085: }
1086: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1087: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1088: $canhost = 1;
1089: } else {
1090: $canhost = 0;
1091: }
1092: }
1093: if ($canhost) {
1094: if ($remotesessions->{'version'} ne '') {
1095: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1096: if ($reqmajor ne '' && $reqminor ne '') {
1097: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1098: my $major = $1;
1099: my $minor = $2;
1100: if (($major < $reqmajor ) ||
1101: (($major == $reqmajor) && ($minor < $reqminor))) {
1102: $canhost = 0;
1103: }
1104: } else {
1105: $canhost = 0;
1106: }
1107: }
1108: }
1109: }
1110: }
1111: if ($canhost) {
1112: if (ref($hostedsessions) eq 'HASH') {
1113: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1114: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1115: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1116: if (($uint_dom ne '') &&
1117: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1118: $canhost = 0;
1119: } else {
1120: $canhost = 1;
1121: }
1122: }
1123: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1124: if (($uint_dom ne '') &&
1125: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1126: $canhost = 1;
1127: } else {
1128: $canhost = 0;
1129: }
1130: }
1131: }
1132: }
1133: return $canhost;
1134: }
1135:
1136: sub spare_can_host {
1137: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1138: my $canhost=1;
1139: my @intdoms;
1140: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1141: if (ref($internet_names) eq 'ARRAY') {
1142: @intdoms = @{$internet_names};
1143: }
1144: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1145: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1146: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1147: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1148: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1149: $canhost = &can_host_session($udom,$try_server,$remoterev,
1150: $remotesessions,
1151: $defdomdefaults{'hostedsessions'});
1152: }
1153: return $canhost;
1154: }
1155:
1156: sub this_host_spares {
1157: my ($dom) = @_;
1158: my ($dom_in_use,$lonhost_in_use,$result);
1159: my @hosts = ¤t_machine_ids();
1160: foreach my $lonhost (@hosts) {
1161: if (&host_domain($lonhost) eq $dom) {
1162: $dom_in_use = $dom;
1163: $lonhost_in_use = $lonhost;
1164: last;
1165: }
1166: }
1167: if ($dom_in_use ne '') {
1168: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1169: }
1170: if (ref($result) ne 'HASH') {
1171: $lonhost_in_use = $perlvar{'lonHostID'};
1172: $dom_in_use = &host_domain($lonhost_in_use);
1173: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1174: if (ref($result) ne 'HASH') {
1175: $result = \%spareid;
1176: }
1177: }
1178: return $result;
1179: }
1180:
1181: sub spares_for_offload {
1182: my ($dom_in_use,$lonhost_in_use) = @_;
1183: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1184: if (defined($cached)) {
1185: return $result;
1186: } else {
1187: my $cachetime = 60*60*24;
1188: my %domconfig =
1189: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1190: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1191: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1192: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1193: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1194: }
1195: }
1196: }
1197: }
1198: return;
1199: }
1200:
1201: sub get_lonbalancer_config {
1202: my ($servers) = @_;
1203: my ($currbalancer,$currtargets);
1204: if (ref($servers) eq 'HASH') {
1205: foreach my $server (keys(%{$servers})) {
1206: my %what = (
1207: spareid => 1,
1208: perlvar => 1,
1209: );
1210: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1211: if ($result eq 'ok') {
1212: if (ref($returnhash) eq 'HASH') {
1213: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1214: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1215: $currbalancer = $server;
1216: $currtargets = {};
1217: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1218: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1219: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1220: }
1221: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1222: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1223: }
1224: }
1225: last;
1226: }
1227: }
1228: }
1229: }
1230: }
1231: }
1232: return ($currbalancer,$currtargets);
1233: }
1234:
1235: sub check_loadbalancing {
1236: my ($uname,$udom) = @_;
1237: my ($is_balancer,$dom_in_use,$homeintdom,$rule_in_effect,
1238: $offloadto,$otherserver);
1239: my $lonhost = $perlvar{'lonHostID'};
1240: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1241: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1242: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1243: my $serverhomedom = &host_domain($lonhost);
1244:
1245: my $cachetime = 60*60*24;
1246:
1247: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1248: $dom_in_use = $udom;
1249: $homeintdom = 1;
1250: } else {
1251: $dom_in_use = $serverhomedom;
1252: }
1253: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1254: unless (defined($cached)) {
1255: my %domconfig =
1256: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1257: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1258: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1259: }
1260: }
1261: if (ref($result) eq 'HASH') {
1262: my $currbalancer = $result->{'lonhost'};
1263: my $currtargets = $result->{'targets'};
1264: my $currrules = $result->{'rules'};
1265: if ($currbalancer ne '') {
1266: my @hosts = ¤t_machine_ids();
1267: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1268: $is_balancer = 1;
1269: }
1270: }
1271: if ($is_balancer) {
1272: if (ref($currrules) eq 'HASH') {
1273: if ($homeintdom) {
1274: if ($uname ne '') {
1275: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1276: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1277: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1278: $rule_in_effect = $currrules->{'_LC_author'};
1279: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1280: $rule_in_effect = $currrules->{'_LC_adv'}
1281: }
1282: }
1283: if ($rule_in_effect eq '') {
1284: my %userenv = &userenvironment($udom,$uname,'inststatus');
1285: if ($userenv{'inststatus'} ne '') {
1286: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1287: my ($othertitle,$usertypes,$types) =
1288: &Apache::loncommon::sorted_inst_types($udom);
1289: if (ref($types) eq 'ARRAY') {
1290: foreach my $type (@{$types}) {
1291: if (grep(/^\Q$type\E$/,@statuses)) {
1292: if (exists($currrules->{$type})) {
1293: $rule_in_effect = $currrules->{$type};
1294: }
1295: }
1296: }
1297: }
1298: } else {
1299: if (exists($currrules->{'default'})) {
1300: $rule_in_effect = $currrules->{'default'};
1301: }
1302: }
1303: }
1304: } else {
1305: if (exists($currrules->{'default'})) {
1306: $rule_in_effect = $currrules->{'default'};
1307: }
1308: }
1309: } else {
1310: if ($currrules->{'_LC_external'} ne '') {
1311: $rule_in_effect = $currrules->{'_LC_external'};
1312: }
1313: }
1314: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1315: $uname,$udom);
1316: }
1317: }
1318: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1319: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1320: unless (defined($cached)) {
1321: my %domconfig =
1322: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1323: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1324: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1325: }
1326: }
1327: if (ref($result) eq 'HASH') {
1328: my $currbalancer = $result->{'lonhost'};
1329: my $currtargets = $result->{'targets'};
1330: my $currrules = $result->{'rules'};
1331:
1332: if ($currbalancer eq $lonhost) {
1333: $is_balancer = 1;
1334: if (ref($currrules) eq 'HASH') {
1335: if ($currrules->{'_LC_internetdom'} ne '') {
1336: $rule_in_effect = $currrules->{'_LC_internetdom'};
1337: }
1338: }
1339: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1340: $uname,$udom);
1341: }
1342: } else {
1343: if ($perlvar{'lonBalancer'} eq 'yes') {
1344: $is_balancer = 1;
1345: $offloadto = &this_host_spares($dom_in_use);
1346: }
1347: }
1348: } else {
1349: if ($perlvar{'lonBalancer'} eq 'yes') {
1350: $is_balancer = 1;
1351: $offloadto = &this_host_spares($dom_in_use);
1352: }
1353: }
1354: my $lowest_load = 30000;
1355: if (ref($offloadto) eq 'HASH') {
1356: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1357: foreach my $try_server (@{$offloadto->{'primary'}}) {
1358: ($otherserver,$lowest_load) =
1359: &compare_server_load($try_server,$otherserver,$lowest_load);
1360: }
1361: }
1362: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1363:
1364: if (!$found_server) {
1365: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1366: foreach my $try_server (@{$offloadto->{'default'}}) {
1367: ($otherserver,$lowest_load) =
1368: &compare_server_load($try_server,$otherserver,$lowest_load);
1369: }
1370: }
1371: }
1372: } elsif (ref($offloadto) eq 'ARRAY') {
1373: if (@{$offloadto} == 1) {
1374: $otherserver = $offloadto->[0];
1375: } elsif (@{$offloadto} > 1) {
1376: foreach my $try_server (@{$offloadto}) {
1377: ($otherserver,$lowest_load) =
1378: &compare_server_load($try_server,$otherserver,$lowest_load);
1379: }
1380: }
1381: }
1382: return ($is_balancer,$otherserver);
1383: }
1384:
1385: sub get_loadbalancer_targets {
1386: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1387: my $offloadto;
1388: if ($rule_in_effect eq '') {
1389: $offloadto = $currtargets;
1390: } else {
1391: if ($rule_in_effect eq 'homeserver') {
1392: my $homeserver = &homeserver($uname,$udom);
1393: if ($homeserver ne 'no_host') {
1394: $offloadto = [$homeserver];
1395: }
1396: } elsif ($rule_in_effect eq 'externalbalancer') {
1397: my %domconfig =
1398: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1399: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1400: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1401: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1402: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1403: }
1404: }
1405: } else {
1406: my %servers = &dom_servers($udom);
1407: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1408: if (&hostname($remotebalancer) ne '') {
1409: $offloadto = [$remotebalancer];
1410: }
1411: }
1412: } elsif (&hostname($rule_in_effect) ne '') {
1413: $offloadto = [$rule_in_effect];
1414: }
1415: }
1416: return $offloadto;
1417: }
1418:
1419: sub internet_dom_servers {
1420: my ($dom) = @_;
1421: my (%uniqservers,%servers);
1422: my $primaryserver = &hostname(&domain($dom,'primary'));
1423: my @machinedoms = &machine_domains($primaryserver);
1424: foreach my $mdom (@machinedoms) {
1425: my %currservers = %servers;
1426: my %server = &get_servers($mdom);
1427: %servers = (%currservers,%server);
1428: }
1429: my %by_hostname;
1430: foreach my $id (keys(%servers)) {
1431: push(@{$by_hostname{$servers{$id}}},$id);
1432: }
1433: foreach my $hostname (sort(keys(%by_hostname))) {
1434: if (@{$by_hostname{$hostname}} > 1) {
1435: my $match = 0;
1436: foreach my $id (@{$by_hostname{$hostname}}) {
1437: if (&host_domain($id) eq $dom) {
1438: $uniqservers{$id} = $hostname;
1439: $match = 1;
1440: }
1441: }
1442: unless ($match) {
1443: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1444: }
1445: } else {
1446: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1447: }
1448: }
1449: return %uniqservers;
1450: }
1451:
1452: # ---------------------- Find the homebase for a user from domain's lib servers
1453:
1454: my %homecache;
1455: sub homeserver {
1456: my ($uname,$udom,$ignoreBadCache)=@_;
1457: my $index="$uname:$udom";
1458:
1459: if (exists($homecache{$index})) { return $homecache{$index}; }
1460:
1461: my %servers = &get_servers($udom,'library');
1462: foreach my $tryserver (keys(%servers)) {
1463: next if ($ignoreBadCache ne 'true' &&
1464: exists($badServerCache{$tryserver}));
1465:
1466: my $answer=reply("home:$udom:$uname",$tryserver);
1467: if ($answer eq 'found') {
1468: delete($badServerCache{$tryserver});
1469: return $homecache{$index}=$tryserver;
1470: } elsif ($answer eq 'no_host') {
1471: $badServerCache{$tryserver}=1;
1472: }
1473: }
1474: return 'no_host';
1475: }
1476:
1477: # ------------------------------------- Find the usernames behind a list of IDs
1478:
1479: sub idget {
1480: my ($udom,@ids)=@_;
1481: my %returnhash=();
1482:
1483: my %servers = &get_servers($udom,'library');
1484: foreach my $tryserver (keys(%servers)) {
1485: my $idlist=join('&',@ids);
1486: $idlist=~tr/A-Z/a-z/;
1487: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1488: my @answer=();
1489: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1490: @answer=split(/\&/,$reply);
1491: } ;
1492: my $i;
1493: for ($i=0;$i<=$#ids;$i++) {
1494: if ($answer[$i]) {
1495: $returnhash{$ids[$i]}=$answer[$i];
1496: }
1497: }
1498: }
1499: return %returnhash;
1500: }
1501:
1502: # ------------------------------------- Find the IDs behind a list of usernames
1503:
1504: sub idrget {
1505: my ($udom,@unames)=@_;
1506: my %returnhash=();
1507: foreach my $uname (@unames) {
1508: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1509: }
1510: return %returnhash;
1511: }
1512:
1513: # ------------------------------- Store away a list of names and associated IDs
1514:
1515: sub idput {
1516: my ($udom,%ids)=@_;
1517: my %servers=();
1518: foreach my $uname (keys(%ids)) {
1519: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1520: my $uhom=&homeserver($uname,$udom);
1521: if ($uhom ne 'no_host') {
1522: my $id=&escape($ids{$uname});
1523: $id=~tr/A-Z/a-z/;
1524: my $esc_unam=&escape($uname);
1525: if ($servers{$uhom}) {
1526: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1527: } else {
1528: $servers{$uhom}=$id.'='.$esc_unam;
1529: }
1530: }
1531: }
1532: foreach my $server (keys(%servers)) {
1533: &critical('idput:'.$udom.':'.$servers{$server},$server);
1534: }
1535: }
1536:
1537: # ------------------------------dump from db file owned by domainconfig user
1538: sub dump_dom {
1539: my ($namespace, $udom, $regexp) = @_;
1540:
1541: $udom ||= $env{'user.domain'};
1542:
1543: return () unless $udom;
1544:
1545: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1546: }
1547:
1548: # ------------------------------------------ get items from domain db files
1549:
1550: sub get_dom {
1551: my ($namespace,$storearr,$udom,$uhome)=@_;
1552: my $items='';
1553: foreach my $item (@$storearr) {
1554: $items.=&escape($item).'&';
1555: }
1556: $items=~s/\&$//;
1557: if (!$udom) {
1558: $udom=$env{'user.domain'};
1559: if (defined(&domain($udom,'primary'))) {
1560: $uhome=&domain($udom,'primary');
1561: } else {
1562: undef($uhome);
1563: }
1564: } else {
1565: if (!$uhome) {
1566: if (defined(&domain($udom,'primary'))) {
1567: $uhome=&domain($udom,'primary');
1568: }
1569: }
1570: }
1571: if ($udom && $uhome && ($uhome ne 'no_host')) {
1572: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1573: my %returnhash;
1574: if ($rep eq '' || $rep =~ /^error: 2 /) {
1575: return %returnhash;
1576: }
1577: my @pairs=split(/\&/,$rep);
1578: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1579: return @pairs;
1580: }
1581: my $i=0;
1582: foreach my $item (@$storearr) {
1583: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1584: $i++;
1585: }
1586: return %returnhash;
1587: } else {
1588: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1589: }
1590: }
1591:
1592: # -------------------------------------------- put items in domain db files
1593:
1594: sub put_dom {
1595: my ($namespace,$storehash,$udom,$uhome)=@_;
1596: if (!$udom) {
1597: $udom=$env{'user.domain'};
1598: if (defined(&domain($udom,'primary'))) {
1599: $uhome=&domain($udom,'primary');
1600: } else {
1601: undef($uhome);
1602: }
1603: } else {
1604: if (!$uhome) {
1605: if (defined(&domain($udom,'primary'))) {
1606: $uhome=&domain($udom,'primary');
1607: }
1608: }
1609: }
1610: if ($udom && $uhome && ($uhome ne 'no_host')) {
1611: my $items='';
1612: foreach my $item (keys(%$storehash)) {
1613: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1614: }
1615: $items=~s/\&$//;
1616: return &reply("putdom:$udom:$namespace:$items",$uhome);
1617: } else {
1618: &logthis("put_dom failed - no homeserver and/or domain");
1619: }
1620: }
1621:
1622: # --------------------- newput for items in db file owned by domainconfig user
1623: sub newput_dom {
1624: my ($namespace,$storehash,$udom) = @_;
1625: my $result;
1626: if (!$udom) {
1627: $udom=$env{'user.domain'};
1628: }
1629: if ($udom) {
1630: my $uname = &get_domainconfiguser($udom);
1631: $result = &newput($namespace,$storehash,$udom,$uname);
1632: }
1633: return $result;
1634: }
1635:
1636: # --------------------- delete for items in db file owned by domainconfig user
1637: sub del_dom {
1638: my ($namespace,$storearr,$udom)=@_;
1639: if (ref($storearr) eq 'ARRAY') {
1640: if (!$udom) {
1641: $udom=$env{'user.domain'};
1642: }
1643: if ($udom) {
1644: my $uname = &get_domainconfiguser($udom);
1645: return &del($namespace,$storearr,$udom,$uname);
1646: }
1647: }
1648: }
1649:
1650: # ----------------------------------construct domainconfig user for a domain
1651: sub get_domainconfiguser {
1652: my ($udom) = @_;
1653: return $udom.'-domainconfig';
1654: }
1655:
1656: sub retrieve_inst_usertypes {
1657: my ($udom) = @_;
1658: my (%returnhash,@order);
1659: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1660: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1661: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1662: %returnhash = %{$domdefs{'inststatustypes'}};
1663: @order = @{$domdefs{'inststatusorder'}};
1664: } else {
1665: if (defined(&domain($udom,'primary'))) {
1666: my $uhome=&domain($udom,'primary');
1667: my $rep=&reply("inst_usertypes:$udom",$uhome);
1668: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1669: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1670: return (\%returnhash,\@order);
1671: }
1672: my ($hashitems,$orderitems) = split(/:/,$rep);
1673: my @pairs=split(/\&/,$hashitems);
1674: foreach my $item (@pairs) {
1675: my ($key,$value)=split(/=/,$item,2);
1676: $key = &unescape($key);
1677: next if ($key =~ /^error: 2 /);
1678: $returnhash{$key}=&thaw_unescape($value);
1679: }
1680: my @esc_order = split(/\&/,$orderitems);
1681: foreach my $item (@esc_order) {
1682: push(@order,&unescape($item));
1683: }
1684: } else {
1685: &logthis("get_dom failed - no primary domain server for $udom");
1686: }
1687: }
1688: return (\%returnhash,\@order);
1689: }
1690:
1691: sub is_domainimage {
1692: my ($url) = @_;
1693: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1694: if (&domain($1) ne '') {
1695: return '1';
1696: }
1697: }
1698: return;
1699: }
1700:
1701: sub inst_directory_query {
1702: my ($srch) = @_;
1703: my $udom = $srch->{'srchdomain'};
1704: my %results;
1705: my $homeserver = &domain($udom,'primary');
1706: my $outcome;
1707: if ($homeserver ne '') {
1708: my $queryid=&reply("querysend:instdirsearch:".
1709: &escape($srch->{'srchby'}).':'.
1710: &escape($srch->{'srchterm'}).':'.
1711: &escape($srch->{'srchtype'}),$homeserver);
1712: my $host=&hostname($homeserver);
1713: if ($queryid !~/^\Q$host\E\_/) {
1714: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1715: return;
1716: }
1717: my $response = &get_query_reply($queryid);
1718: my $maxtries = 5;
1719: my $tries = 1;
1720: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1721: $response = &get_query_reply($queryid);
1722: $tries ++;
1723: }
1724:
1725: if (!&error($response) && $response ne 'refused') {
1726: if ($response eq 'unavailable') {
1727: $outcome = $response;
1728: } else {
1729: $outcome = 'ok';
1730: my @matches = split(/\n/,$response);
1731: foreach my $match (@matches) {
1732: my ($key,$value) = split(/=/,$match);
1733: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1734: }
1735: }
1736: }
1737: }
1738: return ($outcome,%results);
1739: }
1740:
1741: sub usersearch {
1742: my ($srch) = @_;
1743: my $dom = $srch->{'srchdomain'};
1744: my %results;
1745: my %libserv = &all_library();
1746: my $query = 'usersearch';
1747: foreach my $tryserver (keys(%libserv)) {
1748: if (&host_domain($tryserver) eq $dom) {
1749: my $host=&hostname($tryserver);
1750: my $queryid=
1751: &reply("querysend:".&escape($query).':'.
1752: &escape($srch->{'srchby'}).':'.
1753: &escape($srch->{'srchtype'}).':'.
1754: &escape($srch->{'srchterm'}),$tryserver);
1755: if ($queryid !~/^\Q$host\E\_/) {
1756: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1757: next;
1758: }
1759: my $reply = &get_query_reply($queryid);
1760: my $maxtries = 1;
1761: my $tries = 1;
1762: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1763: $reply = &get_query_reply($queryid);
1764: $tries ++;
1765: }
1766: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1767: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1768: } else {
1769: my @matches;
1770: if ($reply =~ /\n/) {
1771: @matches = split(/\n/,$reply);
1772: } else {
1773: @matches = split(/\&/,$reply);
1774: }
1775: foreach my $match (@matches) {
1776: my ($uname,$udom,%userhash);
1777: foreach my $entry (split(/:/,$match)) {
1778: my ($key,$value) =
1779: map {&unescape($_);} split(/=/,$entry);
1780: $userhash{$key} = $value;
1781: if ($key eq 'username') {
1782: $uname = $value;
1783: } elsif ($key eq 'domain') {
1784: $udom = $value;
1785: }
1786: }
1787: $results{$uname.':'.$udom} = \%userhash;
1788: }
1789: }
1790: }
1791: }
1792: return %results;
1793: }
1794:
1795: sub get_instuser {
1796: my ($udom,$uname,$id) = @_;
1797: my $homeserver = &domain($udom,'primary');
1798: my ($outcome,%results);
1799: if ($homeserver ne '') {
1800: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1801: &escape($id).':'.&escape($udom),$homeserver);
1802: my $host=&hostname($homeserver);
1803: if ($queryid !~/^\Q$host\E\_/) {
1804: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1805: return;
1806: }
1807: my $response = &get_query_reply($queryid);
1808: my $maxtries = 5;
1809: my $tries = 1;
1810: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1811: $response = &get_query_reply($queryid);
1812: $tries ++;
1813: }
1814: if (!&error($response) && $response ne 'refused') {
1815: if ($response eq 'unavailable') {
1816: $outcome = $response;
1817: } else {
1818: $outcome = 'ok';
1819: my @matches = split(/\n/,$response);
1820: foreach my $match (@matches) {
1821: my ($key,$value) = split(/=/,$match);
1822: $results{&unescape($key)} = &thaw_unescape($value);
1823: }
1824: }
1825: }
1826: }
1827: my %userinfo;
1828: if (ref($results{$uname}) eq 'HASH') {
1829: %userinfo = %{$results{$uname}};
1830: }
1831: return ($outcome,%userinfo);
1832: }
1833:
1834: sub inst_rulecheck {
1835: my ($udom,$uname,$id,$item,$rules) = @_;
1836: my %returnhash;
1837: if ($udom ne '') {
1838: if (ref($rules) eq 'ARRAY') {
1839: @{$rules} = map {&escape($_);} (@{$rules});
1840: my $rulestr = join(':',@{$rules});
1841: my $homeserver=&domain($udom,'primary');
1842: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1843: my $response;
1844: if ($item eq 'username') {
1845: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1846: ':'.&escape($uname).':'.$rulestr,
1847: $homeserver));
1848: } elsif ($item eq 'id') {
1849: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1850: ':'.&escape($id).':'.$rulestr,
1851: $homeserver));
1852: } elsif ($item eq 'selfcreate') {
1853: $response=&unescape(&reply('instselfcreatecheck:'.
1854: &escape($udom).':'.&escape($uname).
1855: ':'.$rulestr,$homeserver));
1856: }
1857: if ($response ne 'refused') {
1858: my @pairs=split(/\&/,$response);
1859: foreach my $item (@pairs) {
1860: my ($key,$value)=split(/=/,$item,2);
1861: $key = &unescape($key);
1862: next if ($key =~ /^error: 2 /);
1863: $returnhash{$key}=&thaw_unescape($value);
1864: }
1865: }
1866: }
1867: }
1868: }
1869: return %returnhash;
1870: }
1871:
1872: sub inst_userrules {
1873: my ($udom,$check) = @_;
1874: my (%ruleshash,@ruleorder);
1875: if ($udom ne '') {
1876: my $homeserver=&domain($udom,'primary');
1877: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1878: my $response;
1879: if ($check eq 'id') {
1880: $response=&reply('instidrules:'.&escape($udom),
1881: $homeserver);
1882: } elsif ($check eq 'email') {
1883: $response=&reply('instemailrules:'.&escape($udom),
1884: $homeserver);
1885: } else {
1886: $response=&reply('instuserrules:'.&escape($udom),
1887: $homeserver);
1888: }
1889: if (($response ne 'refused') && ($response ne 'error') &&
1890: ($response ne 'unknown_cmd') &&
1891: ($response ne 'no_such_host')) {
1892: my ($hashitems,$orderitems) = split(/:/,$response);
1893: my @pairs=split(/\&/,$hashitems);
1894: foreach my $item (@pairs) {
1895: my ($key,$value)=split(/=/,$item,2);
1896: $key = &unescape($key);
1897: next if ($key =~ /^error: 2 /);
1898: $ruleshash{$key}=&thaw_unescape($value);
1899: }
1900: my @esc_order = split(/\&/,$orderitems);
1901: foreach my $item (@esc_order) {
1902: push(@ruleorder,&unescape($item));
1903: }
1904: }
1905: }
1906: }
1907: return (\%ruleshash,\@ruleorder);
1908: }
1909:
1910: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1911:
1912: sub get_domain_defaults {
1913: my ($domain) = @_;
1914: my $cachetime = 60*60*24;
1915: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1916: if (defined($cached)) {
1917: if (ref($result) eq 'HASH') {
1918: return %{$result};
1919: }
1920: }
1921: my %domdefaults;
1922: my %domconfig =
1923: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1924: 'requestcourses','inststatus',
1925: 'coursedefaults','usersessions'],$domain);
1926: if (ref($domconfig{'defaults'}) eq 'HASH') {
1927: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1928: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1929: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1930: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1931: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1932: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1933: } else {
1934: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1935: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1936: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1937: }
1938: if (ref($domconfig{'quotas'}) eq 'HASH') {
1939: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1940: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1941: } else {
1942: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1943: }
1944: my @usertools = ('aboutme','blog','portfolio');
1945: foreach my $item (@usertools) {
1946: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1947: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1948: }
1949: }
1950: }
1951: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1952: foreach my $item ('official','unofficial','community') {
1953: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1954: }
1955: }
1956: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1957: foreach my $item ('inststatustypes','inststatusorder') {
1958: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1959: }
1960: }
1961: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1962: foreach my $item ('canuse_pdfforms') {
1963: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1964: }
1965: }
1966: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1967: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1968: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1969: }
1970: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1971: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1972: }
1973: }
1974: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1975: $cachetime);
1976: return %domdefaults;
1977: }
1978:
1979: # --------------------------------------------------- Assign a key to a student
1980:
1981: sub assign_access_key {
1982: #
1983: # a valid key looks like uname:udom#comments
1984: # comments are being appended
1985: #
1986: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1987: $kdom=
1988: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1989: $knum=
1990: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1991: $cdom=
1992: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1993: $cnum=
1994: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1995: $udom=$env{'user.name'} unless (defined($udom));
1996: $uname=$env{'user.domain'} unless (defined($uname));
1997: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1998: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1999: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2000: # assigned to this person
2001: # - this should not happen,
2002: # unless something went wrong
2003: # the first time around
2004: # ready to assign
2005: $logentry=$1.'; '.$logentry;
2006: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2007: $kdom,$knum) eq 'ok') {
2008: # key now belongs to user
2009: my $envkey='key.'.$cdom.'_'.$cnum;
2010: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2011: &appenv({'environment.'.$envkey => $ckey});
2012: return 'ok';
2013: } else {
2014: return
2015: 'error: Count not permanently assign key, will need to be re-entered later.';
2016: }
2017: } else {
2018: return 'error: Could not assign key, try again later.';
2019: }
2020: } elsif (!$existing{$ckey}) {
2021: # the key does not exist
2022: return 'error: The key does not exist';
2023: } else {
2024: # the key is somebody else's
2025: return 'error: The key is already in use';
2026: }
2027: }
2028:
2029: # ------------------------------------------ put an additional comment on a key
2030:
2031: sub comment_access_key {
2032: #
2033: # a valid key looks like uname:udom#comments
2034: # comments are being appended
2035: #
2036: my ($ckey,$cdom,$cnum,$logentry)=@_;
2037: $cdom=
2038: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2039: $cnum=
2040: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2041: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2042: if ($existing{$ckey}) {
2043: $existing{$ckey}.='; '.$logentry;
2044: # ready to assign
2045: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2046: $cdom,$cnum) eq 'ok') {
2047: return 'ok';
2048: } else {
2049: return 'error: Count not store comment.';
2050: }
2051: } else {
2052: # the key does not exist
2053: return 'error: The key does not exist';
2054: }
2055: }
2056:
2057: # ------------------------------------------------------ Generate a set of keys
2058:
2059: sub generate_access_keys {
2060: my ($number,$cdom,$cnum,$logentry)=@_;
2061: $cdom=
2062: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2063: $cnum=
2064: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2065: unless (&allowed('mky',$cdom)) { return 0; }
2066: unless (($cdom) && ($cnum)) { return 0; }
2067: if ($number>10000) { return 0; }
2068: sleep(2); # make sure don't get same seed twice
2069: srand(time()^($$+($$<<15))); # from "Programming Perl"
2070: my $total=0;
2071: for (my $i=1;$i<=$number;$i++) {
2072: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2073: sprintf("%lx",int(100000*rand)).'-'.
2074: sprintf("%lx",int(100000*rand));
2075: $newkey=~s/1/g/g; # folks mix up 1 and l
2076: $newkey=~s/0/h/g; # and also 0 and O
2077: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2078: if ($existing{$newkey}) {
2079: $i--;
2080: } else {
2081: if (&put('accesskeys',
2082: { $newkey => '# generated '.localtime().
2083: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2084: '; '.$logentry },
2085: $cdom,$cnum) eq 'ok') {
2086: $total++;
2087: }
2088: }
2089: }
2090: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2091: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2092: return $total;
2093: }
2094:
2095: # ------------------------------------------------------- Validate an accesskey
2096:
2097: sub validate_access_key {
2098: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2099: $cdom=
2100: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2101: $cnum=
2102: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2103: $udom=$env{'user.domain'} unless (defined($udom));
2104: $uname=$env{'user.name'} unless (defined($uname));
2105: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2106: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2107: }
2108:
2109: # ------------------------------------- Find the section of student in a course
2110: sub devalidate_getsection_cache {
2111: my ($udom,$unam,$courseid)=@_;
2112: my $hashid="$udom:$unam:$courseid";
2113: &devalidate_cache_new('getsection',$hashid);
2114: }
2115:
2116: sub courseid_to_courseurl {
2117: my ($courseid) = @_;
2118: #already url style courseid
2119: return $courseid if ($courseid =~ m{^/});
2120:
2121: if (exists($env{'course.'.$courseid.'.num'})) {
2122: my $cnum = $env{'course.'.$courseid.'.num'};
2123: my $cdom = $env{'course.'.$courseid.'.domain'};
2124: return "/$cdom/$cnum";
2125: }
2126:
2127: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2128: if (exists($courseinfo{'num'})) {
2129: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2130: }
2131:
2132: return undef;
2133: }
2134:
2135: sub getsection {
2136: my ($udom,$unam,$courseid)=@_;
2137: my $cachetime=1800;
2138:
2139: my $hashid="$udom:$unam:$courseid";
2140: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2141: if (defined($cached)) { return $result; }
2142:
2143: my %Pending;
2144: my %Expired;
2145: #
2146: # Each role can either have not started yet (pending), be active,
2147: # or have expired.
2148: #
2149: # If there is an active role, we are done.
2150: #
2151: # If there is more than one role which has not started yet,
2152: # choose the one which will start sooner
2153: # If there is one role which has not started yet, return it.
2154: #
2155: # If there is more than one expired role, choose the one which ended last.
2156: # If there is a role which has expired, return it.
2157: #
2158: $courseid = &courseid_to_courseurl($courseid);
2159: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2160: foreach my $key (keys(%roleshash)) {
2161: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2162: my $section=$1;
2163: if ($key eq $courseid.'_st') { $section=''; }
2164: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2165: my $now=time;
2166: if (defined($end) && $end && ($now > $end)) {
2167: $Expired{$end}=$section;
2168: next;
2169: }
2170: if (defined($start) && $start && ($now < $start)) {
2171: $Pending{$start}=$section;
2172: next;
2173: }
2174: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2175: }
2176: #
2177: # Presumedly there will be few matching roles from the above
2178: # loop and the sorting time will be negligible.
2179: if (scalar(keys(%Pending))) {
2180: my ($time) = sort {$a <=> $b} keys(%Pending);
2181: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2182: }
2183: if (scalar(keys(%Expired))) {
2184: my @sorted = sort {$a <=> $b} keys(%Expired);
2185: my $time = pop(@sorted);
2186: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2187: }
2188: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2189: }
2190:
2191: sub save_cache {
2192: &purge_remembered();
2193: #&Apache::loncommon::validate_page();
2194: undef(%env);
2195: undef($env_loaded);
2196: }
2197:
2198: my $to_remember=-1;
2199: my %remembered;
2200: my %accessed;
2201: my $kicks=0;
2202: my $hits=0;
2203: sub make_key {
2204: my ($name,$id) = @_;
2205: if (length($id) > 65
2206: && length(&escape($id)) > 200) {
2207: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2208: }
2209: return &escape($name.':'.$id);
2210: }
2211:
2212: sub devalidate_cache_new {
2213: my ($name,$id,$debug) = @_;
2214: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2215: $id=&make_key($name,$id);
2216: $memcache->delete($id);
2217: delete($remembered{$id});
2218: delete($accessed{$id});
2219: }
2220:
2221: sub is_cached_new {
2222: my ($name,$id,$debug) = @_;
2223: $id=&make_key($name,$id);
2224: if (exists($remembered{$id})) {
2225: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2226: $accessed{$id}=[&gettimeofday()];
2227: $hits++;
2228: return ($remembered{$id},1);
2229: }
2230: my $value = $memcache->get($id);
2231: if (!(defined($value))) {
2232: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2233: return (undef,undef);
2234: }
2235: if ($value eq '__undef__') {
2236: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2237: $value=undef;
2238: }
2239: &make_room($id,$value,$debug);
2240: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2241: return ($value,1);
2242: }
2243:
2244: sub do_cache_new {
2245: my ($name,$id,$value,$time,$debug) = @_;
2246: $id=&make_key($name,$id);
2247: my $setvalue=$value;
2248: if (!defined($setvalue)) {
2249: $setvalue='__undef__';
2250: }
2251: if (!defined($time) ) {
2252: $time=600;
2253: }
2254: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2255: my $result = $memcache->set($id,$setvalue,$time);
2256: if (! $result) {
2257: &logthis("caching of id -> $id failed");
2258: $memcache->disconnect_all();
2259: }
2260: # need to make a copy of $value
2261: &make_room($id,$value,$debug);
2262: return $value;
2263: }
2264:
2265: sub make_room {
2266: my ($id,$value,$debug)=@_;
2267:
2268: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2269: : $value;
2270: if ($to_remember<0) { return; }
2271: $accessed{$id}=[&gettimeofday()];
2272: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2273: my $to_kick;
2274: my $max_time=0;
2275: foreach my $other (keys(%accessed)) {
2276: if (&tv_interval($accessed{$other}) > $max_time) {
2277: $to_kick=$other;
2278: $max_time=&tv_interval($accessed{$other});
2279: }
2280: }
2281: delete($remembered{$to_kick});
2282: delete($accessed{$to_kick});
2283: $kicks++;
2284: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2285: return;
2286: }
2287:
2288: sub purge_remembered {
2289: #&logthis("Tossing ".scalar(keys(%remembered)));
2290: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2291: undef(%remembered);
2292: undef(%accessed);
2293: }
2294: # ------------------------------------- Read an entry from a user's environment
2295:
2296: sub userenvironment {
2297: my ($udom,$unam,@what)=@_;
2298: my $items;
2299: foreach my $item (@what) {
2300: $items.=&escape($item).'&';
2301: }
2302: $items=~s/\&$//;
2303: my %returnhash=();
2304: my $uhome = &homeserver($unam,$udom);
2305: unless ($uhome eq 'no_host') {
2306: my @answer=split(/\&/,
2307: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2308: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2309: return %returnhash;
2310: }
2311: my $i;
2312: for ($i=0;$i<=$#what;$i++) {
2313: $returnhash{$what[$i]}=&unescape($answer[$i]);
2314: }
2315: }
2316: return %returnhash;
2317: }
2318:
2319: # ---------------------------------------------------------- Get a studentphoto
2320: sub studentphoto {
2321: my ($udom,$unam,$ext) = @_;
2322: my $home=&Apache::lonnet::homeserver($unam,$udom);
2323: if (defined($env{'request.course.id'})) {
2324: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2325: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2326: return(&retrievestudentphoto($udom,$unam,$ext));
2327: } else {
2328: my ($result,$perm_reqd)=
2329: &Apache::lonnet::auto_photo_permission($unam,$udom);
2330: if ($result eq 'ok') {
2331: if (!($perm_reqd eq 'yes')) {
2332: return(&retrievestudentphoto($udom,$unam,$ext));
2333: }
2334: }
2335: }
2336: }
2337: } else {
2338: my ($result,$perm_reqd) =
2339: &Apache::lonnet::auto_photo_permission($unam,$udom);
2340: if ($result eq 'ok') {
2341: if (!($perm_reqd eq 'yes')) {
2342: return(&retrievestudentphoto($udom,$unam,$ext));
2343: }
2344: }
2345: }
2346: return '/adm/lonKaputt/lonlogo_broken.gif';
2347: }
2348:
2349: sub retrievestudentphoto {
2350: my ($udom,$unam,$ext,$type) = @_;
2351: my $home=&Apache::lonnet::homeserver($unam,$udom);
2352: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2353: if ($ret eq 'ok') {
2354: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2355: if ($type eq 'thumbnail') {
2356: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2357: }
2358: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2359: return $tokenurl;
2360: } else {
2361: if ($type eq 'thumbnail') {
2362: return '/adm/lonKaputt/genericstudent_tn.gif';
2363: } else {
2364: return '/adm/lonKaputt/lonlogo_broken.gif';
2365: }
2366: }
2367: }
2368:
2369: # -------------------------------------------------------------------- New chat
2370:
2371: sub chatsend {
2372: my ($newentry,$anon,$group)=@_;
2373: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2374: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2375: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2376: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2377: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2378: &escape($newentry)).':'.$group,$chome);
2379: }
2380:
2381: # ------------------------------------------ Find current version of a resource
2382:
2383: sub getversion {
2384: my $fname=&clutter(shift);
2385: unless ($fname=~/^\/res\//) { return -1; }
2386: return ¤tversion(&filelocation('',$fname));
2387: }
2388:
2389: sub currentversion {
2390: my $fname=shift;
2391: my $author=$fname;
2392: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2393: my ($udom,$uname)=split(/\//,$author);
2394: my $home=&homeserver($uname,$udom);
2395: if ($home eq 'no_host') {
2396: return -1;
2397: }
2398: my $answer=&reply("currentversion:$fname",$home);
2399: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2400: return -1;
2401: }
2402: return $answer;
2403: }
2404:
2405: #
2406: # Return special version number of resource if set by override, empty otherwise
2407: #
2408: sub usedversion {
2409: my $fname=shift;
2410: unless ($fname) { $fname=$env{'request.uri'}; }
2411: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2412: if ($urlversion) { return $urlversion; }
2413: return '';
2414: }
2415:
2416: # ----------------------------- Subscribe to a resource, return URL if possible
2417:
2418: sub subscribe {
2419: my $fname=shift;
2420: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2421: $fname=~s/[\n\r]//g;
2422: my $author=$fname;
2423: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2424: my ($udom,$uname)=split(/\//,$author);
2425: my $home=homeserver($uname,$udom);
2426: if ($home eq 'no_host') {
2427: return 'not_found';
2428: }
2429: my $answer=reply("sub:$fname",$home);
2430: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2431: $answer.=' by '.$home;
2432: }
2433: return $answer;
2434: }
2435:
2436: # -------------------------------------------------------------- Replicate file
2437:
2438: sub repcopy {
2439: my $filename=shift;
2440: $filename=~s/\/+/\//g;
2441: my $londocroot = $perlvar{'lonDocRoot'};
2442: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2443: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2444: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2445: $filename=~m{^/*(uploaded|editupload)/}) {
2446: return &repcopy_userfile($filename);
2447: }
2448: $filename=~s/[\n\r]//g;
2449: my $transname="$filename.in.transfer";
2450: # FIXME: this should flock
2451: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2452: my $remoteurl=subscribe($filename);
2453: if ($remoteurl =~ /^con_lost by/) {
2454: &logthis("Subscribe returned $remoteurl: $filename");
2455: return 'unavailable';
2456: } elsif ($remoteurl eq 'not_found') {
2457: #&logthis("Subscribe returned not_found: $filename");
2458: return 'not_found';
2459: } elsif ($remoteurl =~ /^rejected by/) {
2460: &logthis("Subscribe returned $remoteurl: $filename");
2461: return 'forbidden';
2462: } elsif ($remoteurl eq 'directory') {
2463: return 'ok';
2464: } else {
2465: my $author=$filename;
2466: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2467: my ($udom,$uname)=split(/\//,$author);
2468: my $home=homeserver($uname,$udom);
2469: unless ($home eq $perlvar{'lonHostID'}) {
2470: my @parts=split(/\//,$filename);
2471: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2472: if ($path ne "$londocroot/res") {
2473: &logthis("Malconfiguration for replication: $filename");
2474: return 'bad_request';
2475: }
2476: my $count;
2477: for ($count=5;$count<$#parts;$count++) {
2478: $path.="/$parts[$count]";
2479: if ((-e $path)!=1) {
2480: mkdir($path,0777);
2481: }
2482: }
2483: my $ua=new LWP::UserAgent;
2484: my $request=new HTTP::Request('GET',"$remoteurl");
2485: my $response=$ua->request($request,$transname);
2486: if ($response->is_error()) {
2487: unlink($transname);
2488: my $message=$response->status_line;
2489: &logthis("<font color=\"blue\">WARNING:"
2490: ." LWP get: $message: $filename</font>");
2491: return 'unavailable';
2492: } else {
2493: if ($remoteurl!~/\.meta$/) {
2494: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2495: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2496: if ($mresponse->is_error()) {
2497: unlink($filename.'.meta');
2498: &logthis(
2499: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2500: }
2501: }
2502: rename($transname,$filename);
2503: return 'ok';
2504: }
2505: }
2506: }
2507: }
2508:
2509: # ------------------------------------------------ Get server side include body
2510: sub ssi_body {
2511: my ($filelink,%form)=@_;
2512: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2513: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2514: }
2515: my $output='';
2516: my $response;
2517: if ($filelink=~/^https?\:/) {
2518: ($output,$response)=&externalssi($filelink);
2519: } else {
2520: $filelink .= $filelink=~/\?/ ? '&' : '?';
2521: $filelink .= 'inhibitmenu=yes';
2522: ($output,$response)=&ssi($filelink,%form);
2523: }
2524: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2525: $output=~s/^.*?\<body[^\>]*\>//si;
2526: $output=~s/\<\/body\s*\>.*?$//si;
2527: if (wantarray) {
2528: return ($output, $response);
2529: } else {
2530: return $output;
2531: }
2532: }
2533:
2534: # --------------------------------------------------------- Server Side Include
2535:
2536: sub absolute_url {
2537: my ($host_name) = @_;
2538: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2539: if ($host_name eq '') {
2540: $host_name = $ENV{'SERVER_NAME'};
2541: }
2542: return $protocol.$host_name;
2543: }
2544:
2545: #
2546: # Server side include.
2547: # Parameters:
2548: # fn Possibly encrypted resource name/id.
2549: # form Hash that describes how the rendering should be done
2550: # and other things.
2551: # Returns:
2552: # Scalar context: The content of the response.
2553: # Array context: 2 element list of the content and the full response object.
2554: #
2555: sub ssi {
2556:
2557: my ($fn,%form)=@_;
2558: my $ua=new LWP::UserAgent;
2559: my $request;
2560:
2561: $form{'no_update_last_known'}=1;
2562: &Apache::lonenc::check_encrypt(\$fn);
2563: if (%form) {
2564: $request=new HTTP::Request('POST',&absolute_url().$fn);
2565: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2566: } else {
2567: $request=new HTTP::Request('GET',&absolute_url().$fn);
2568: }
2569:
2570: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2571: my $response=$ua->request($request);
2572:
2573: if (wantarray) {
2574: return ($response->content, $response);
2575: } else {
2576: return $response->content;
2577: }
2578: }
2579:
2580: sub externalssi {
2581: my ($url)=@_;
2582: my $ua=new LWP::UserAgent;
2583: my $request=new HTTP::Request('GET',$url);
2584: my $response=$ua->request($request);
2585: if (wantarray) {
2586: return ($response->content, $response);
2587: } else {
2588: return $response->content;
2589: }
2590: }
2591:
2592: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2593:
2594: sub allowuploaded {
2595: my ($srcurl,$url)=@_;
2596: $url=&clutter(&declutter($url));
2597: my $dir=$url;
2598: $dir=~s/\/[^\/]+$//;
2599: my %httpref=();
2600: my $httpurl=&hreflocation('',$url);
2601: $httpref{'httpref.'.$httpurl}=$srcurl;
2602: &Apache::lonnet::appenv(\%httpref);
2603: }
2604:
2605: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2606: # input: action, courseID, current domain, intended
2607: # path to file, source of file, instruction to parse file for objects,
2608: # ref to hash for embedded objects,
2609: # ref to hash for codebase of java objects.
2610: # reference to scalar to accommodate mime type determined
2611: # from File::MMagic if $parser = parse.
2612: #
2613: # output: url to file (if action was uploaddoc),
2614: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2615: #
2616: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2617: # course.
2618: #
2619: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2620: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2621: # course's home server.
2622: #
2623: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2624: # be copied from $source (current location) to
2625: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2626: # and will then be copied to
2627: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2628: # course's home server.
2629: #
2630: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2631: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2632: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2633: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2634: # in course's home server.
2635: #
2636:
2637: sub process_coursefile {
2638: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2639: $mimetype)=@_;
2640: my $fetchresult;
2641: my $home=&homeserver($docuname,$docudom);
2642: if ($action eq 'propagate') {
2643: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2644: $home);
2645: } else {
2646: my $fpath = '';
2647: my $fname = $file;
2648: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2649: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2650: my $filepath = &build_filepath($fpath);
2651: if ($action eq 'copy') {
2652: if ($source eq '') {
2653: $fetchresult = 'no source file';
2654: return $fetchresult;
2655: } else {
2656: my $destination = $filepath.'/'.$fname;
2657: rename($source,$destination);
2658: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2659: $home);
2660: }
2661: } elsif ($action eq 'uploaddoc') {
2662: open(my $fh,'>'.$filepath.'/'.$fname);
2663: print $fh $env{'form.'.$source};
2664: close($fh);
2665: if ($parser eq 'parse') {
2666: my $mm = new File::MMagic;
2667: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2668: if ($type eq 'text/html') {
2669: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2670: unless ($parse_result eq 'ok') {
2671: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2672: }
2673: }
2674: if (ref($mimetype)) {
2675: $$mimetype = $type;
2676: }
2677: }
2678: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2679: $home);
2680: if ($fetchresult eq 'ok') {
2681: return '/uploaded/'.$fpath.'/'.$fname;
2682: } else {
2683: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2684: ' to host '.$home.': '.$fetchresult);
2685: return '/adm/notfound.html';
2686: }
2687: }
2688: }
2689: unless ( $fetchresult eq 'ok') {
2690: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2691: ' to host '.$home.': '.$fetchresult);
2692: }
2693: return $fetchresult;
2694: }
2695:
2696: sub build_filepath {
2697: my ($fpath) = @_;
2698: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2699: unless ($fpath eq '') {
2700: my @parts=split('/',$fpath);
2701: foreach my $part (@parts) {
2702: $filepath.= '/'.$part;
2703: if ((-e $filepath)!=1) {
2704: mkdir($filepath,0777);
2705: }
2706: }
2707: }
2708: return $filepath;
2709: }
2710:
2711: sub store_edited_file {
2712: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2713: my $file = $primary_url;
2714: $file =~ s#^/uploaded/$docudom/$docuname/##;
2715: my $fpath = '';
2716: my $fname = $file;
2717: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2718: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2719: my $filepath = &build_filepath($fpath);
2720: open(my $fh,'>'.$filepath.'/'.$fname);
2721: print $fh $content;
2722: close($fh);
2723: my $home=&homeserver($docuname,$docudom);
2724: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2725: $home);
2726: if ($$fetchresult eq 'ok') {
2727: return '/uploaded/'.$fpath.'/'.$fname;
2728: } else {
2729: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2730: ' to host '.$home.': '.$$fetchresult);
2731: return '/adm/notfound.html';
2732: }
2733: }
2734:
2735: sub clean_filename {
2736: my ($fname,$args)=@_;
2737: # Replace Windows backslashes by forward slashes
2738: $fname=~s/\\/\//g;
2739: if (!$args->{'keep_path'}) {
2740: # Get rid of everything but the actual filename
2741: $fname=~s/^.*\/([^\/]+)$/$1/;
2742: }
2743: # Replace spaces by underscores
2744: $fname=~s/\s+/\_/g;
2745: # Replace all other weird characters by nothing
2746: $fname=~s{[^/\w\.\-]}{}g;
2747: # Replace all .\d. sequences with _\d. so they no longer look like version
2748: # numbers
2749: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2750: return $fname;
2751: }
2752: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2753: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2754: # image with the same aspect ratio as the original, but with dimensions which do
2755: # not exceed $resizewidth and $resizeheight.
2756:
2757: sub resizeImage {
2758: my ($img_path,$resizewidth,$resizeheight) = @_;
2759: my $ima = Image::Magick->new;
2760: my $resized;
2761: if (-e $img_path) {
2762: $ima->Read($img_path);
2763: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2764: my $width = $ima->Get('width');
2765: my $height = $ima->Get('height');
2766: if ($width > $resizewidth) {
2767: my $factor = $width/$resizewidth;
2768: my $newheight = $height/$factor;
2769: $ima->Scale(width=>$resizewidth,height=>$newheight);
2770: $resized = 1;
2771: }
2772: }
2773: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2774: my $width = $ima->Get('width');
2775: my $height = $ima->Get('height');
2776: if ($height > $resizeheight) {
2777: my $factor = $height/$resizeheight;
2778: my $newwidth = $width/$factor;
2779: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2780: $resized = 1;
2781: }
2782: }
2783: if ($resized) {
2784: $ima->Write($img_path);
2785: }
2786: }
2787: return;
2788: }
2789:
2790: # --------------- Take an uploaded file and put it into the userfiles directory
2791: # input: $formname - the contents of the file are in $env{"form.$formname"}
2792: # the desired filename is in $env{"form.$formname.filename"}
2793: # $context - possible values: coursedoc, existingfile, overwrite,
2794: # canceloverwrite, or ''.
2795: # if 'coursedoc': upload to the current course
2796: # if 'existingfile': write file to tmp/overwrites directory
2797: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2798: # $context is passed as argument to &finishuserfileupload
2799: # $subdir - directory in userfile to store the file into
2800: # $parser - instruction to parse file for objects ($parser = parse)
2801: # $allfiles - reference to hash for embedded objects
2802: # $codebase - reference to hash for codebase of java objects
2803: # $desuname - username for permanent storage of uploaded file
2804: # $dsetudom - domain for permanaent storage of uploaded file
2805: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2806: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2807: # $resizewidth - width (pixels) to which to resize uploaded image
2808: # $resizeheight - height (pixels) to which to resize uploaded image
2809: # $mimetype - reference to scalar to accommodate mime type determined
2810: # from File::MMagic.
2811: #
2812: # output: url of file in userspace, or error: <message>
2813: # or /adm/notfound.html if failure to upload occurse
2814:
2815: sub userfileupload {
2816: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2817: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2818: if (!defined($subdir)) { $subdir='unknown'; }
2819: my $fname=$env{'form.'.$formname.'.filename'};
2820: $fname=&clean_filename($fname);
2821: # See if there is anything left
2822: unless ($fname) { return 'error: no uploaded file'; }
2823: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2824: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2825: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2826: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2827: my $now = time;
2828: my $filepath;
2829: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2830: $filepath = 'tmp/helprequests/'.$now;
2831: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2832: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2833: '_'.$env{'user.domain'}.'/pending';
2834: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2835: my ($docuname,$docudom);
2836: if ($destudom) {
2837: $docudom = $destudom;
2838: } else {
2839: $docudom = $env{'user.domain'};
2840: }
2841: if ($destuname) {
2842: $docuname = $destuname;
2843: } else {
2844: $docuname = $env{'user.name'};
2845: }
2846: if (exists($env{'form.group'})) {
2847: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2848: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2849: }
2850: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2851: if ($context eq 'canceloverwrite') {
2852: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2853: if (-e $tempfile) {
2854: my @info = stat($tempfile);
2855: if ($info[9] eq $env{'form.timestamp'}) {
2856: unlink($tempfile);
2857: }
2858: }
2859: return;
2860: }
2861: }
2862: # Create the directory if not present
2863: my @parts=split(/\//,$filepath);
2864: my $fullpath = $perlvar{'lonDaemons'};
2865: for (my $i=0;$i<@parts;$i++) {
2866: $fullpath .= '/'.$parts[$i];
2867: if ((-e $fullpath)!=1) {
2868: mkdir($fullpath,0777);
2869: }
2870: }
2871: open(my $fh,'>'.$fullpath.'/'.$fname);
2872: print $fh $env{'form.'.$formname};
2873: close($fh);
2874: if ($context eq 'existingfile') {
2875: my @info = stat($fullpath.'/'.$fname);
2876: return ($fullpath.'/'.$fname,$info[9]);
2877: } else {
2878: return $fullpath.'/'.$fname;
2879: }
2880: }
2881: if ($subdir eq 'scantron') {
2882: $fname = 'scantron_orig_'.$fname;
2883: } else {
2884: $fname="$subdir/$fname";
2885: }
2886: if ($context eq 'coursedoc') {
2887: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2888: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2889: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2890: return &finishuserfileupload($docuname,$docudom,
2891: $formname,$fname,$parser,$allfiles,
2892: $codebase,$thumbwidth,$thumbheight,
2893: $resizewidth,$resizeheight,$context,$mimetype);
2894: } else {
2895: $fname=$env{'form.folder'}.'/'.$fname;
2896: return &process_coursefile('uploaddoc',$docuname,$docudom,
2897: $fname,$formname,$parser,
2898: $allfiles,$codebase,$mimetype);
2899: }
2900: } elsif (defined($destuname)) {
2901: my $docuname=$destuname;
2902: my $docudom=$destudom;
2903: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2904: $parser,$allfiles,$codebase,
2905: $thumbwidth,$thumbheight,
2906: $resizewidth,$resizeheight,$context,$mimetype);
2907: } else {
2908: my $docuname=$env{'user.name'};
2909: my $docudom=$env{'user.domain'};
2910: if (exists($env{'form.group'})) {
2911: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2912: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2913: }
2914: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2915: $parser,$allfiles,$codebase,
2916: $thumbwidth,$thumbheight,
2917: $resizewidth,$resizeheight,$context,$mimetype);
2918: }
2919: }
2920:
2921: sub finishuserfileupload {
2922: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2923: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2924: my $path=$docudom.'/'.$docuname.'/';
2925: my $filepath=$perlvar{'lonDocRoot'};
2926:
2927: my ($fnamepath,$file,$fetchthumb);
2928: $file=$fname;
2929: if ($fname=~m|/|) {
2930: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2931: $path.=$fnamepath.'/';
2932: }
2933: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2934: my $count;
2935: for ($count=4;$count<=$#parts;$count++) {
2936: $filepath.="/$parts[$count]";
2937: if ((-e $filepath)!=1) {
2938: mkdir($filepath,0777);
2939: }
2940: }
2941:
2942: # Save the file
2943: {
2944: if (!open(FH,'>'.$filepath.'/'.$file)) {
2945: &logthis('Failed to create '.$filepath.'/'.$file);
2946: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2947: return '/adm/notfound.html';
2948: }
2949: if ($context eq 'overwrite') {
2950: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2951: my $target = $filepath.'/'.$file;
2952: if (-e $source) {
2953: my @info = stat($source);
2954: if ($info[9] eq $env{'form.timestamp'}) {
2955: unless (&File::Copy::move($source,$target)) {
2956: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2957: return "Moving from $source failed";
2958: }
2959: } else {
2960: return "Temporary file: $source had unexpected date/time for last modification";
2961: }
2962: } else {
2963: return "Temporary file: $source missing";
2964: }
2965: } elsif (!print FH ($env{'form.'.$formname})) {
2966: &logthis('Failed to write to '.$filepath.'/'.$file);
2967: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2968: return '/adm/notfound.html';
2969: }
2970: close(FH);
2971: if ($resizewidth && $resizeheight) {
2972: my $mm = new File::MMagic;
2973: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2974: if ($mime_type =~ m{^image/}) {
2975: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2976: }
2977: }
2978: }
2979: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
2980: if (ref($mimetype)) {
2981: if ($$mimetype eq '') {
2982: my $mm = new File::MMagic;
2983: my $type = $mm->checktype_filename($filepath.'/'.$file);
2984: $$mimetype = $type;
2985: }
2986: }
2987: }
2988: if ($parser eq 'parse') {
2989: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
2990: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2991: $allfiles,$codebase);
2992: unless ($parse_result eq 'ok') {
2993: &logthis('Failed to parse '.$filepath.$file.
2994: ' for embedded media: '.$parse_result);
2995: }
2996: }
2997: }
2998: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2999: my $input = $filepath.'/'.$file;
3000: my $output = $filepath.'/'.'tn-'.$file;
3001: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3002: system("convert -sample $thumbsize $input $output");
3003: if (-e $filepath.'/'.'tn-'.$file) {
3004: $fetchthumb = 1;
3005: }
3006: }
3007:
3008: # Notify homeserver to grep it
3009: #
3010: my $docuhome=&homeserver($docuname,$docudom);
3011: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3012: if ($fetchresult eq 'ok') {
3013: if ($fetchthumb) {
3014: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3015: if ($thumbresult ne 'ok') {
3016: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3017: $docuhome.': '.$thumbresult);
3018: }
3019: }
3020: #
3021: # Return the URL to it
3022: return '/uploaded/'.$path.$file;
3023: } else {
3024: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3025: ': '.$fetchresult);
3026: return '/adm/notfound.html';
3027: }
3028: }
3029:
3030: sub extract_embedded_items {
3031: my ($fullpath,$allfiles,$codebase,$content) = @_;
3032: my @state = ();
3033: my (%lastids,%related,%shockwave,%flashvars);
3034: my %javafiles = (
3035: codebase => '',
3036: code => '',
3037: archive => ''
3038: );
3039: my %mediafiles = (
3040: src => '',
3041: movie => '',
3042: );
3043: my $p;
3044: if ($content) {
3045: $p = HTML::LCParser->new($content);
3046: } else {
3047: $p = HTML::LCParser->new($fullpath);
3048: }
3049: while (my $t=$p->get_token()) {
3050: if ($t->[0] eq 'S') {
3051: my ($tagname, $attr) = ($t->[1],$t->[2]);
3052: push(@state, $tagname);
3053: if (lc($tagname) eq 'allow') {
3054: &add_filetype($allfiles,$attr->{'src'},'src');
3055: }
3056: if (lc($tagname) eq 'img') {
3057: &add_filetype($allfiles,$attr->{'src'},'src');
3058: }
3059: if (lc($tagname) eq 'a') {
3060: &add_filetype($allfiles,$attr->{'href'},'href');
3061: }
3062: if (lc($tagname) eq 'script') {
3063: my $src;
3064: if ($attr->{'archive'} =~ /\.jar$/i) {
3065: &add_filetype($allfiles,$attr->{'archive'},'archive');
3066: } else {
3067: if ($attr->{'src'} ne '') {
3068: $src = $attr->{'src'};
3069: &add_filetype($allfiles,$src,'src');
3070: }
3071: }
3072: my $text = $p->get_trimmed_text();
3073: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3074: my @swfargs = split(/,/,$1);
3075: foreach my $item (@swfargs) {
3076: $item =~ s/["']//g;
3077: $item =~ s/^\s+//;
3078: $item =~ s/\s+$//;
3079: }
3080: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3081: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3082: push(@{$related{$swfargs[0]}},$swfargs[2]);
3083: } else {
3084: $related{$swfargs[0]} = [$swfargs[2]];
3085: }
3086: }
3087: }
3088: }
3089: if (lc($tagname) eq 'link') {
3090: if (lc($attr->{'rel'}) eq 'stylesheet') {
3091: &add_filetype($allfiles,$attr->{'href'},'href');
3092: }
3093: }
3094: if (lc($tagname) eq 'object' ||
3095: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3096: foreach my $item (keys(%javafiles)) {
3097: $javafiles{$item} = '';
3098: }
3099: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3100: $lastids{lc($tagname)} = $attr->{'id'};
3101: }
3102: }
3103: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3104: my $name = lc($attr->{'name'});
3105: foreach my $item (keys(%javafiles)) {
3106: if ($name eq $item) {
3107: $javafiles{$item} = $attr->{'value'};
3108: last;
3109: }
3110: }
3111: my $pathfrom;
3112: foreach my $item (keys(%mediafiles)) {
3113: if ($name eq $item) {
3114: $pathfrom = $attr->{'value'};
3115: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3116: &add_filetype($allfiles,$pathfrom,$name);
3117: last;
3118: }
3119: }
3120: if ($name eq 'flashvars') {
3121: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3122: }
3123: if ($pathfrom ne '') {
3124: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3125: $pathfrom);
3126: }
3127: }
3128: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3129: foreach my $item (keys(%javafiles)) {
3130: if ($attr->{$item}) {
3131: $javafiles{$item} = $attr->{$item};
3132: last;
3133: }
3134: }
3135: foreach my $item (keys(%mediafiles)) {
3136: if ($attr->{$item}) {
3137: &add_filetype($allfiles,$attr->{$item},$item);
3138: last;
3139: }
3140: }
3141: if (lc($tagname) eq 'embed') {
3142: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3143: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3144: $attr->{'src'});
3145: }
3146: }
3147: }
3148: if ($t->[4] =~ m{/>$}) {
3149: pop(@state);
3150: }
3151: } elsif ($t->[0] eq 'E') {
3152: my ($tagname) = ($t->[1]);
3153: if ($javafiles{'codebase'} ne '') {
3154: $javafiles{'codebase'} .= '/';
3155: }
3156: if (lc($tagname) eq 'applet' ||
3157: lc($tagname) eq 'object' ||
3158: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3159: ) {
3160: foreach my $item (keys(%javafiles)) {
3161: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3162: my $file=$javafiles{'codebase'}.$javafiles{$item};
3163: &add_filetype($allfiles,$file,$item);
3164: }
3165: }
3166: }
3167: pop @state;
3168: }
3169: }
3170: foreach my $id (sort(keys(%flashvars))) {
3171: if ($shockwave{$id} ne '') {
3172: my @pairs = split(/\&/,$flashvars{$id});
3173: foreach my $pair (@pairs) {
3174: my ($key,$value) = split(/\=/,$pair);
3175: if ($key eq 'thumb') {
3176: &add_filetype($allfiles,$value,$key);
3177: } elsif ($key eq 'content') {
3178: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3179: my ($ext) = ($value =~ /\.([^.]+)$/);
3180: if ($ext ne '') {
3181: &add_filetype($allfiles,$path.$value,$ext);
3182: }
3183: }
3184: }
3185: }
3186: }
3187: return 'ok';
3188: }
3189:
3190: sub add_filetype {
3191: my ($allfiles,$file,$type)=@_;
3192: if (exists($allfiles->{$file})) {
3193: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3194: push(@{$allfiles->{$file}}, &escape($type));
3195: }
3196: } else {
3197: @{$allfiles->{$file}} = (&escape($type));
3198: }
3199: }
3200:
3201: sub embedded_dependency {
3202: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3203: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3204: if (($identifier ne '') &&
3205: (ref($related->{$identifier}) eq 'ARRAY') &&
3206: ($pathfrom ne '')) {
3207: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3208: foreach my $dep (@{$related->{$identifier}}) {
3209: &add_filetype($allfiles,$path.$dep,'object');
3210: }
3211: }
3212: }
3213: return;
3214: }
3215:
3216: sub removeuploadedurl {
3217: my ($url)=@_;
3218: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3219: return &removeuserfile($uname,$udom,$fname);
3220: }
3221:
3222: sub removeuserfile {
3223: my ($docuname,$docudom,$fname)=@_;
3224: my $home=&homeserver($docuname,$docudom);
3225: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3226: if ($result eq 'ok') {
3227: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3228: my $metafile = $fname.'.meta';
3229: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3230: my $url = "/uploaded/$docudom/$docuname/$fname";
3231: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3232: my $sqlresult =
3233: &update_portfolio_table($docuname,$docudom,$file,
3234: 'portfolio_metadata',$group,
3235: 'delete');
3236: }
3237: }
3238: return $result;
3239: }
3240:
3241: sub mkdiruserfile {
3242: my ($docuname,$docudom,$dir)=@_;
3243: my $home=&homeserver($docuname,$docudom);
3244: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3245: }
3246:
3247: sub renameuserfile {
3248: my ($docuname,$docudom,$old,$new)=@_;
3249: my $home=&homeserver($docuname,$docudom);
3250: my $result = &reply("renameuserfile:$docudom:$docuname:".
3251: &escape("$old").':'.&escape("$new"),$home);
3252: if ($result eq 'ok') {
3253: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3254: my $oldmeta = $old.'.meta';
3255: my $newmeta = $new.'.meta';
3256: my $metaresult =
3257: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3258: my $url = "/uploaded/$docudom/$docuname/$old";
3259: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3260: my $sqlresult =
3261: &update_portfolio_table($docuname,$docudom,$file,
3262: 'portfolio_metadata',$group,
3263: 'delete');
3264: }
3265: }
3266: return $result;
3267: }
3268:
3269: # ------------------------------------------------------------------------- Log
3270:
3271: sub log {
3272: my ($dom,$nam,$hom,$what)=@_;
3273: return critical("log:$dom:$nam:$what",$hom);
3274: }
3275:
3276: # ------------------------------------------------------------------ Course Log
3277: #
3278: # This routine flushes several buffers of non-mission-critical nature
3279: #
3280:
3281: sub flushcourselogs {
3282: &logthis('Flushing log buffers');
3283: #
3284: # course logs
3285: # This is a log of all transactions in a course, which can be used
3286: # for data mining purposes
3287: #
3288: # It also collects the courseid database, which lists last transaction
3289: # times and course titles for all courseids
3290: #
3291: my %courseidbuffer=();
3292: foreach my $crsid (keys(%courselogs)) {
3293: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3294: &escape($courselogs{$crsid}),
3295: $coursehombuf{$crsid}) eq 'ok') {
3296: delete $courselogs{$crsid};
3297: } else {
3298: &logthis('Failed to flush log buffer for '.$crsid);
3299: if (length($courselogs{$crsid})>40000) {
3300: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3301: " exceeded maximum size, deleting.</font>");
3302: delete $courselogs{$crsid};
3303: }
3304: }
3305: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3306: 'description' => $coursedescrbuf{$crsid},
3307: 'inst_code' => $courseinstcodebuf{$crsid},
3308: 'type' => $coursetypebuf{$crsid},
3309: 'owner' => $courseownerbuf{$crsid},
3310: };
3311: }
3312: #
3313: # Write course id database (reverse lookup) to homeserver of courses
3314: # Is used in pickcourse
3315: #
3316: foreach my $crs_home (keys(%courseidbuffer)) {
3317: my $response = &courseidput(&host_domain($crs_home),
3318: $courseidbuffer{$crs_home},
3319: $crs_home,'timeonly');
3320: }
3321: #
3322: # File accesses
3323: # Writes to the dynamic metadata of resources to get hit counts, etc.
3324: #
3325: foreach my $entry (keys(%accesshash)) {
3326: if ($entry =~ /___count$/) {
3327: my ($dom,$name);
3328: ($dom,$name,undef)=
3329: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3330: if (! defined($dom) || $dom eq '' ||
3331: ! defined($name) || $name eq '') {
3332: my $cid = $env{'request.course.id'};
3333: $dom = $env{'request.'.$cid.'.domain'};
3334: $name = $env{'request.'.$cid.'.num'};
3335: }
3336: my $value = $accesshash{$entry};
3337: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3338: my %temphash=($url => $value);
3339: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3340: if ($result eq 'ok') {
3341: delete $accesshash{$entry};
3342: }
3343: } else {
3344: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3345: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3346: my %temphash=($entry => $accesshash{$entry});
3347: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3348: delete $accesshash{$entry};
3349: }
3350: }
3351: }
3352: #
3353: # Roles
3354: # Reverse lookup of user roles for course faculty/staff and co-authorship
3355: #
3356: foreach my $entry (keys(%userrolehash)) {
3357: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3358: split(/\:/,$entry);
3359: if (&Apache::lonnet::put('nohist_userroles',
3360: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3361: $rudom,$runame) eq 'ok') {
3362: delete $userrolehash{$entry};
3363: }
3364: }
3365: #
3366: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3367: #
3368: my %domrolebuffer = ();
3369: foreach my $entry (keys(%domainrolehash)) {
3370: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3371: if ($domrolebuffer{$rudom}) {
3372: $domrolebuffer{$rudom}.='&'.&escape($entry).
3373: '='.&escape($domainrolehash{$entry});
3374: } else {
3375: $domrolebuffer{$rudom}.=&escape($entry).
3376: '='.&escape($domainrolehash{$entry});
3377: }
3378: delete $domainrolehash{$entry};
3379: }
3380: foreach my $dom (keys(%domrolebuffer)) {
3381: my %servers = &get_servers($dom,'library');
3382: foreach my $tryserver (keys(%servers)) {
3383: unless (&reply('domroleput:'.$dom.':'.
3384: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3385: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3386: }
3387: }
3388: }
3389: $dumpcount++;
3390: }
3391:
3392: sub courselog {
3393: my $what=shift;
3394: $what=time.':'.$what;
3395: unless ($env{'request.course.id'}) { return ''; }
3396: $coursedombuf{$env{'request.course.id'}}=
3397: $env{'course.'.$env{'request.course.id'}.'.domain'};
3398: $coursenumbuf{$env{'request.course.id'}}=
3399: $env{'course.'.$env{'request.course.id'}.'.num'};
3400: $coursehombuf{$env{'request.course.id'}}=
3401: $env{'course.'.$env{'request.course.id'}.'.home'};
3402: $coursedescrbuf{$env{'request.course.id'}}=
3403: $env{'course.'.$env{'request.course.id'}.'.description'};
3404: $courseinstcodebuf{$env{'request.course.id'}}=
3405: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3406: $courseownerbuf{$env{'request.course.id'}}=
3407: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3408: $coursetypebuf{$env{'request.course.id'}}=
3409: $env{'course.'.$env{'request.course.id'}.'.type'};
3410: if (defined $courselogs{$env{'request.course.id'}}) {
3411: $courselogs{$env{'request.course.id'}}.='&'.$what;
3412: } else {
3413: $courselogs{$env{'request.course.id'}}.=$what;
3414: }
3415: if (length($courselogs{$env{'request.course.id'}})>4048) {
3416: &flushcourselogs();
3417: }
3418: }
3419:
3420: sub courseacclog {
3421: my $fnsymb=shift;
3422: unless ($env{'request.course.id'}) { return ''; }
3423: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3424: if ($fnsymb=~/$LONCAPA::assess_re/) {
3425: $what.=':POST';
3426: # FIXME: Probably ought to escape things....
3427: foreach my $key (keys(%env)) {
3428: if ($key=~/^form\.(.*)/) {
3429: my $formitem = $1;
3430: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3431: $what.=':'.$formitem.'='.$env{$key};
3432: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3433: $what.=':'.$formitem.'='.$env{$key};
3434: }
3435: }
3436: }
3437: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3438: # FIXME: We should not be depending on a form parameter that someone
3439: # editing lonsearchcat.pm might change in the future.
3440: if ($env{'form.phase'} eq 'course_search') {
3441: $what.= ':POST';
3442: # FIXME: Probably ought to escape things....
3443: foreach my $element ('courseexp','crsfulltext','crsrelated',
3444: 'crsdiscuss') {
3445: $what.=':'.$element.'='.$env{'form.'.$element};
3446: }
3447: }
3448: }
3449: &courselog($what);
3450: }
3451:
3452: sub countacc {
3453: my $url=&declutter(shift);
3454: return if (! defined($url) || $url eq '');
3455: unless ($env{'request.course.id'}) { return ''; }
3456: #
3457: # Mark that this url was used in this course
3458: #
3459: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3460: #
3461: # Increase the access count for this resource in this child process
3462: #
3463: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3464: $accesshash{$key}++;
3465: }
3466:
3467: sub linklog {
3468: my ($from,$to)=@_;
3469: $from=&declutter($from);
3470: $to=&declutter($to);
3471: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3472: $accesshash{$to.'___'.$from.'___goto'}=1;
3473: }
3474:
3475: sub statslog {
3476: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3477: if ($users<2) { return; }
3478: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3479: 'course' => $env{'request.course.id'},
3480: 'sections' => '"all"',
3481: 'num_students' => $users,
3482: 'part' => $part,
3483: 'symb' => $symb,
3484: 'mean_tries' => $av_attempts,
3485: 'deg_of_diff' => $degdiff});
3486: foreach my $key (keys(%dynstore)) {
3487: $accesshash{$key}=$dynstore{$key};
3488: }
3489: }
3490:
3491: sub userrolelog {
3492: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3493: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3494: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3495: $userrolehash
3496: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3497: =$tend.':'.$tstart;
3498: }
3499: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3500: $userrolehash
3501: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3502: =$tend.':'.$tstart;
3503: }
3504: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3505: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3506: $domainrolehash
3507: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3508: = $tend.':'.$tstart;
3509: }
3510: }
3511:
3512: sub courserolelog {
3513: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3514: if (($trole eq 'cc') || ($trole eq 'in') ||
3515: ($trole eq 'ep') || ($trole eq 'ad') ||
3516: ($trole eq 'ta') || ($trole eq 'st') ||
3517: ($trole=~/^cr/) || ($trole eq 'gr') ||
3518: ($trole eq 'co')) {
3519: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3520: my $cdom = $1;
3521: my $cnum = $2;
3522: my $sec = $3;
3523: my $namespace = 'rolelog';
3524: my %storehash = (
3525: role => $trole,
3526: start => $tstart,
3527: end => $tend,
3528: selfenroll => $selfenroll,
3529: context => $context,
3530: );
3531: if ($trole eq 'gr') {
3532: $namespace = 'groupslog';
3533: $storehash{'group'} = $sec;
3534: } else {
3535: $storehash{'section'} = $sec;
3536: }
3537: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3538: if (($trole ne 'st') || ($sec ne '')) {
3539: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3540: }
3541: }
3542: }
3543: return;
3544: }
3545:
3546: sub get_course_adv_roles {
3547: my ($cid,$codes) = @_;
3548: $cid=$env{'request.course.id'} unless (defined($cid));
3549: my %coursehash=&coursedescription($cid);
3550: my $crstype = &Apache::loncommon::course_type($cid);
3551: my %nothide=();
3552: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3553: if ($user !~ /:/) {
3554: $nothide{join(':',split(/[\@]/,$user))}=1;
3555: } else {
3556: $nothide{$user}=1;
3557: }
3558: }
3559: my %returnhash=();
3560: my %dumphash=
3561: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3562: my $now=time;
3563: my %privileged;
3564: foreach my $entry (keys(%dumphash)) {
3565: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3566: if (($tstart) && ($tstart<0)) { next; }
3567: if (($tend) && ($tend<$now)) { next; }
3568: if (($tstart) && ($now<$tstart)) { next; }
3569: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3570: if ($username eq '' || $domain eq '') { next; }
3571: unless (ref($privileged{$domain}) eq 'HASH') {
3572: my %dompersonnel =
3573: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3574: $privileged{$domain} = {};
3575: foreach my $server (keys(%dompersonnel)) {
3576: if (ref($dompersonnel{$server}) eq 'HASH') {
3577: foreach my $user (keys(%{$dompersonnel{$server}})) {
3578: my ($trole,$uname,$udom) = split(/:/,$user);
3579: $privileged{$udom}{$uname} = 1;
3580: }
3581: }
3582: }
3583: }
3584: if ((exists($privileged{$domain}{$username})) &&
3585: (!$nothide{$username.':'.$domain})) { next; }
3586: if ($role eq 'cr') { next; }
3587: if ($codes) {
3588: if ($section) { $role .= ':'.$section; }
3589: if ($returnhash{$role}) {
3590: $returnhash{$role}.=','.$username.':'.$domain;
3591: } else {
3592: $returnhash{$role}=$username.':'.$domain;
3593: }
3594: } else {
3595: my $key=&plaintext($role,$crstype);
3596: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3597: if ($returnhash{$key}) {
3598: $returnhash{$key}.=','.$username.':'.$domain;
3599: } else {
3600: $returnhash{$key}=$username.':'.$domain;
3601: }
3602: }
3603: }
3604: return %returnhash;
3605: }
3606:
3607: sub get_my_roles {
3608: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3609: unless (defined($uname)) { $uname=$env{'user.name'}; }
3610: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3611: my (%dumphash,%nothide);
3612: if ($context eq 'userroles') {
3613: %dumphash = &dump('roles',$udom,$uname);
3614: } else {
3615: %dumphash=
3616: &dump('nohist_userroles',$udom,$uname);
3617: if ($hidepriv) {
3618: my %coursehash=&coursedescription($udom.'_'.$uname);
3619: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3620: if ($user !~ /:/) {
3621: $nothide{join(':',split(/[\@]/,$user))} = 1;
3622: } else {
3623: $nothide{$user} = 1;
3624: }
3625: }
3626: }
3627: }
3628: my %returnhash=();
3629: my $now=time;
3630: my %privileged;
3631: foreach my $entry (keys(%dumphash)) {
3632: my ($role,$tend,$tstart);
3633: if ($context eq 'userroles') {
3634: next if ($entry =~ /^rolesdef/);
3635: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3636: } else {
3637: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3638: }
3639: if (($tstart) && ($tstart<0)) { next; }
3640: my $status = 'active';
3641: if (($tend) && ($tend<=$now)) {
3642: $status = 'previous';
3643: }
3644: if (($tstart) && ($now<$tstart)) {
3645: $status = 'future';
3646: }
3647: if (ref($types) eq 'ARRAY') {
3648: if (!grep(/^\Q$status\E$/,@{$types})) {
3649: next;
3650: }
3651: } else {
3652: if ($status ne 'active') {
3653: next;
3654: }
3655: }
3656: my ($rolecode,$username,$domain,$section,$area);
3657: if ($context eq 'userroles') {
3658: ($area,$rolecode) = split(/_/,$entry);
3659: (undef,$domain,$username,$section) = split(/\//,$area);
3660: } else {
3661: ($role,$username,$domain,$section) = split(/\:/,$entry);
3662: }
3663: if (ref($roledoms) eq 'ARRAY') {
3664: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3665: next;
3666: }
3667: }
3668: if (ref($roles) eq 'ARRAY') {
3669: if (!grep(/^\Q$role\E$/,@{$roles})) {
3670: if ($role =~ /^cr\//) {
3671: if (!grep(/^cr$/,@{$roles})) {
3672: next;
3673: }
3674: } elsif ($role =~ /^gr\//) {
3675: if (!grep(/^gr$/,@{$roles})) {
3676: next;
3677: }
3678: } else {
3679: next;
3680: }
3681: }
3682: }
3683: if ($hidepriv) {
3684: if ($context eq 'userroles') {
3685: if ((&privileged($username,$domain)) &&
3686: (!$nothide{$username.':'.$domain})) {
3687: next;
3688: }
3689: } else {
3690: unless (ref($privileged{$domain}) eq 'HASH') {
3691: my %dompersonnel =
3692: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3693: $privileged{$domain} = {};
3694: if (keys(%dompersonnel)) {
3695: foreach my $server (keys(%dompersonnel)) {
3696: if (ref($dompersonnel{$server}) eq 'HASH') {
3697: foreach my $user (keys(%{$dompersonnel{$server}})) {
3698: my ($trole,$uname,$udom) = split(/:/,$user);
3699: $privileged{$udom}{$uname} = $trole;
3700: }
3701: }
3702: }
3703: }
3704: }
3705: if (exists($privileged{$domain}{$username})) {
3706: if (!$nothide{$username.':'.$domain}) {
3707: next;
3708: }
3709: }
3710: }
3711: }
3712: if ($withsec) {
3713: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3714: $tstart.':'.$tend;
3715: } else {
3716: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3717: }
3718: }
3719: return %returnhash;
3720: }
3721:
3722: # ----------------------------------------------------- Frontpage Announcements
3723: #
3724: #
3725:
3726: sub postannounce {
3727: my ($server,$text)=@_;
3728: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3729: unless ($text=~/\w/) { $text=''; }
3730: return &reply('setannounce:'.&escape($text),$server);
3731: }
3732:
3733: sub getannounce {
3734:
3735: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3736: my $announcement='';
3737: while (my $line = <$fh>) { $announcement .= $line; }
3738: close($fh);
3739: if ($announcement=~/\w/) {
3740: return
3741: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3742: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3743: } else {
3744: return '';
3745: }
3746: } else {
3747: return '';
3748: }
3749: }
3750:
3751: # ---------------------------------------------------------- Course ID routines
3752: # Deal with domain's nohist_courseid.db files
3753: #
3754:
3755: sub courseidput {
3756: my ($domain,$storehash,$coursehome,$caller) = @_;
3757: return unless (ref($storehash) eq 'HASH');
3758: my $outcome;
3759: if ($caller eq 'timeonly') {
3760: my $cids = '';
3761: foreach my $item (keys(%$storehash)) {
3762: $cids.=&escape($item).'&';
3763: }
3764: $cids=~s/\&$//;
3765: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3766: $coursehome);
3767: } else {
3768: my $items = '';
3769: foreach my $item (keys(%$storehash)) {
3770: $items.= &escape($item).'='.
3771: &freeze_escape($$storehash{$item}).'&';
3772: }
3773: $items=~s/\&$//;
3774: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3775: $coursehome);
3776: }
3777: if ($outcome eq 'unknown_cmd') {
3778: my $what;
3779: foreach my $cid (keys(%$storehash)) {
3780: $what .= &escape($cid).'=';
3781: foreach my $item ('description','inst_code','owner','type') {
3782: $what .= &escape($storehash->{$cid}{$item}).':';
3783: }
3784: $what =~ s/\:$/&/;
3785: }
3786: $what =~ s/\&$//;
3787: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3788: } else {
3789: return $outcome;
3790: }
3791: }
3792:
3793: sub courseiddump {
3794: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3795: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3796: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3797: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3798: my $as_hash = 1;
3799: my %returnhash;
3800: if (!$domfilter) { $domfilter=''; }
3801: my %libserv = &all_library();
3802: foreach my $tryserver (keys(%libserv)) {
3803: if ( ( $hostidflag == 1
3804: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3805: || (!defined($hostidflag)) ) {
3806:
3807: if (($domfilter eq '') ||
3808: (&host_domain($tryserver) eq $domfilter)) {
3809: my $rep =
3810: &reply('courseiddump:'.&host_domain($tryserver).':'.
3811: $sincefilter.':'.&escape($descfilter).':'.
3812: &escape($instcodefilter).':'.&escape($ownerfilter).
3813: ':'.&escape($coursefilter).':'.&escape($typefilter).
3814: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3815: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3816: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3817: &escape($cc_clone).':'.$cloneonly.':'.
3818: &escape($createdbefore).':'.&escape($createdafter).':'.
3819: &escape($creationcontext).':'.$domcloner,
3820: $tryserver);
3821: my @pairs=split(/\&/,$rep);
3822: foreach my $item (@pairs) {
3823: my ($key,$value)=split(/\=/,$item,2);
3824: $key = &unescape($key);
3825: next if ($key =~ /^error: 2 /);
3826: my $result = &thaw_unescape($value);
3827: if (ref($result) eq 'HASH') {
3828: $returnhash{$key}=$result;
3829: } else {
3830: my @responses = split(/:/,$value);
3831: my @items = ('description','inst_code','owner','type');
3832: for (my $i=0; $i<@responses; $i++) {
3833: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3834: }
3835: }
3836: }
3837: }
3838: }
3839: }
3840: return %returnhash;
3841: }
3842:
3843: sub courselastaccess {
3844: my ($cdom,$cnum,$hostidref) = @_;
3845: my %returnhash;
3846: if ($cdom && $cnum) {
3847: my $chome = &homeserver($cnum,$cdom);
3848: if ($chome ne 'no_host') {
3849: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3850: &extract_lastaccess(\%returnhash,$rep);
3851: }
3852: } else {
3853: if (!$cdom) { $cdom=''; }
3854: my %libserv = &all_library();
3855: foreach my $tryserver (keys(%libserv)) {
3856: if (ref($hostidref) eq 'ARRAY') {
3857: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3858: }
3859: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3860: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3861: &extract_lastaccess(\%returnhash,$rep);
3862: }
3863: }
3864: }
3865: return %returnhash;
3866: }
3867:
3868: sub extract_lastaccess {
3869: my ($returnhash,$rep) = @_;
3870: if (ref($returnhash) eq 'HASH') {
3871: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3872: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3873: $rep eq '') {
3874: my @pairs=split(/\&/,$rep);
3875: foreach my $item (@pairs) {
3876: my ($key,$value)=split(/\=/,$item,2);
3877: $key = &unescape($key);
3878: next if ($key =~ /^error: 2 /);
3879: $returnhash->{$key} = &thaw_unescape($value);
3880: }
3881: }
3882: }
3883: return;
3884: }
3885:
3886: # ---------------------------------------------------------- DC e-mail
3887:
3888: sub dcmailput {
3889: my ($domain,$msgid,$message,$server)=@_;
3890: my $status = &Apache::lonnet::critical(
3891: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3892: &escape($message),$server);
3893: return $status;
3894: }
3895:
3896: sub dcmaildump {
3897: my ($dom,$startdate,$enddate,$senders) = @_;
3898: my %returnhash=();
3899:
3900: if (defined(&domain($dom,'primary'))) {
3901: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3902: &escape($enddate).':';
3903: my @esc_senders=map { &escape($_)} @$senders;
3904: $cmd.=&escape(join('&',@esc_senders));
3905: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3906: my ($key,$value) = split(/\=/,$line,2);
3907: if (($key) && ($value)) {
3908: $returnhash{&unescape($key)} = &unescape($value);
3909: }
3910: }
3911: }
3912: return %returnhash;
3913: }
3914: # ---------------------------------------------------------- Domain roles
3915:
3916: sub get_domain_roles {
3917: my ($dom,$roles,$startdate,$enddate)=@_;
3918: if ((!defined($startdate)) || ($startdate eq '')) {
3919: $startdate = '.';
3920: }
3921: if ((!defined($enddate)) || ($enddate eq '')) {
3922: $enddate = '.';
3923: }
3924: my $rolelist;
3925: if (ref($roles) eq 'ARRAY') {
3926: $rolelist = join(':',@{$roles});
3927: }
3928: my %personnel = ();
3929:
3930: my %servers = &get_servers($dom,'library');
3931: foreach my $tryserver (keys(%servers)) {
3932: %{$personnel{$tryserver}}=();
3933: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3934: &escape($startdate).':'.
3935: &escape($enddate).':'.
3936: &escape($rolelist), $tryserver))) {
3937: my ($key,$value) = split(/\=/,$line,2);
3938: if (($key) && ($value)) {
3939: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3940: }
3941: }
3942: }
3943: return %personnel;
3944: }
3945:
3946: # ----------------------------------------------------------- Interval timing
3947:
3948: {
3949: # Caches needed for speedup of navmaps
3950: # We don't want to cache this for very long at all (5 seconds at most)
3951: #
3952: # The user for whom we cache
3953: my $cachedkey='';
3954: # The cached times for this user
3955: my %cachedtimes=();
3956: # When this was last done
3957: my $cachedtime=();
3958:
3959: sub load_all_first_access {
3960: my ($uname,$udom)=@_;
3961: if (($cachedkey eq $uname.':'.$udom) &&
3962: (abs($cachedtime-time)<5)) {
3963: return;
3964: }
3965: $cachedtime=time;
3966: $cachedkey=$uname.':'.$udom;
3967: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
3968: }
3969:
3970: sub get_first_access {
3971: my ($type,$argsymb,$argmap)=@_;
3972: my ($symb,$courseid,$udom,$uname)=&whichuser();
3973: if ($argsymb) { $symb=$argsymb; }
3974: my ($map,$id,$res)=&decode_symb($symb);
3975: if ($argmap) { $map = $argmap; }
3976: if ($type eq 'course') {
3977: $res='course';
3978: } elsif ($type eq 'map') {
3979: $res=&symbread($map);
3980: } else {
3981: $res=$symb;
3982: }
3983: &load_all_first_access($uname,$udom);
3984: return $cachedtimes{"$courseid\0$res"};
3985: }
3986:
3987: sub set_first_access {
3988: my ($type,$interval)=@_;
3989: my ($symb,$courseid,$udom,$uname)=&whichuser();
3990: my ($map,$id,$res)=&decode_symb($symb);
3991: if ($type eq 'course') {
3992: $res='course';
3993: } elsif ($type eq 'map') {
3994: $res=&symbread($map);
3995: } else {
3996: $res=$symb;
3997: }
3998: $cachedkey='';
3999: my $firstaccess=&get_first_access($type,$symb,$map);
4000: if (!$firstaccess) {
4001: my $start = time;
4002: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4003: $udom,$uname);
4004: if ($putres eq 'ok') {
4005: &put('timerinterval',{"$courseid\0$res"=>$interval},
4006: $udom,$uname);
4007: &appenv(
4008: {
4009: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4010: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4011: }
4012: );
4013: }
4014: return $putres;
4015: }
4016: return 'already_set';
4017: }
4018: }
4019: # --------------------------------------------- Set Expire Date for Spreadsheet
4020:
4021: sub expirespread {
4022: my ($uname,$udom,$stype,$usymb)=@_;
4023: my $cid=$env{'request.course.id'};
4024: if ($cid) {
4025: my $now=time;
4026: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4027: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4028: $env{'course.'.$cid.'.num'}.
4029: ':nohist_expirationdates:'.
4030: &escape($key).'='.$now,
4031: $env{'course.'.$cid.'.home'})
4032: }
4033: return 'ok';
4034: }
4035:
4036: # ----------------------------------------------------- Devalidate Spreadsheets
4037:
4038: sub devalidate {
4039: my ($symb,$uname,$udom)=@_;
4040: my $cid=$env{'request.course.id'};
4041: if ($cid) {
4042: # delete the stored spreadsheets for
4043: # - the student level sheet of this user in course's homespace
4044: # - the assessment level sheet for this resource
4045: # for this user in user's homespace
4046: # - current conditional state info
4047: my $key=$uname.':'.$udom.':';
4048: my $status=
4049: &del('nohist_calculatedsheets',
4050: [$key.'studentcalc:'],
4051: $env{'course.'.$cid.'.domain'},
4052: $env{'course.'.$cid.'.num'})
4053: .' '.
4054: &del('nohist_calculatedsheets_'.$cid,
4055: [$key.'assesscalc:'.$symb],$udom,$uname);
4056: unless ($status eq 'ok ok') {
4057: &logthis('Could not devalidate spreadsheet '.
4058: $uname.' at '.$udom.' for '.
4059: $symb.': '.$status);
4060: }
4061: &delenv('user.state.'.$cid);
4062: }
4063: }
4064:
4065: sub get_scalar {
4066: my ($string,$end) = @_;
4067: my $value;
4068: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4069: $value = $1;
4070: } elsif ($$string =~ s/^([^&]*?)&//) {
4071: $value = $1;
4072: }
4073: return &unescape($value);
4074: }
4075:
4076: sub array2str {
4077: my (@array) = @_;
4078: my $result=&arrayref2str(\@array);
4079: $result=~s/^__ARRAY_REF__//;
4080: $result=~s/__END_ARRAY_REF__$//;
4081: return $result;
4082: }
4083:
4084: sub arrayref2str {
4085: my ($arrayref) = @_;
4086: my $result='__ARRAY_REF__';
4087: foreach my $elem (@$arrayref) {
4088: if(ref($elem) eq 'ARRAY') {
4089: $result.=&arrayref2str($elem).'&';
4090: } elsif(ref($elem) eq 'HASH') {
4091: $result.=&hashref2str($elem).'&';
4092: } elsif(ref($elem)) {
4093: #print("Got a ref of ".(ref($elem))." skipping.");
4094: } else {
4095: $result.=&escape($elem).'&';
4096: }
4097: }
4098: $result=~s/\&$//;
4099: $result .= '__END_ARRAY_REF__';
4100: return $result;
4101: }
4102:
4103: sub hash2str {
4104: my (%hash) = @_;
4105: my $result=&hashref2str(\%hash);
4106: $result=~s/^__HASH_REF__//;
4107: $result=~s/__END_HASH_REF__$//;
4108: return $result;
4109: }
4110:
4111: sub hashref2str {
4112: my ($hashref)=@_;
4113: my $result='__HASH_REF__';
4114: foreach my $key (sort(keys(%$hashref))) {
4115: if (ref($key) eq 'ARRAY') {
4116: $result.=&arrayref2str($key).'=';
4117: } elsif (ref($key) eq 'HASH') {
4118: $result.=&hashref2str($key).'=';
4119: } elsif (ref($key)) {
4120: $result.='=';
4121: #print("Got a ref of ".(ref($key))." skipping.");
4122: } else {
4123: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4124: }
4125:
4126: if(ref($hashref->{$key}) eq 'ARRAY') {
4127: $result.=&arrayref2str($hashref->{$key}).'&';
4128: } elsif(ref($hashref->{$key}) eq 'HASH') {
4129: $result.=&hashref2str($hashref->{$key}).'&';
4130: } elsif(ref($hashref->{$key})) {
4131: $result.='&';
4132: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4133: } else {
4134: $result.=&escape($hashref->{$key}).'&';
4135: }
4136: }
4137: $result=~s/\&$//;
4138: $result .= '__END_HASH_REF__';
4139: return $result;
4140: }
4141:
4142: sub str2hash {
4143: my ($string)=@_;
4144: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4145: return %$hash;
4146: }
4147:
4148: sub str2hashref {
4149: my ($string) = @_;
4150:
4151: my %hash;
4152:
4153: if($string !~ /^__HASH_REF__/) {
4154: if (! ($string eq '' || !defined($string))) {
4155: $hash{'error'}='Not hash reference';
4156: }
4157: return (\%hash, $string);
4158: }
4159:
4160: $string =~ s/^__HASH_REF__//;
4161:
4162: while($string !~ /^__END_HASH_REF__/) {
4163: #key
4164: my $key='';
4165: if($string =~ /^__HASH_REF__/) {
4166: ($key, $string)=&str2hashref($string);
4167: if(defined($key->{'error'})) {
4168: $hash{'error'}='Bad data';
4169: return (\%hash, $string);
4170: }
4171: } elsif($string =~ /^__ARRAY_REF__/) {
4172: ($key, $string)=&str2arrayref($string);
4173: if($key->[0] eq 'Array reference error') {
4174: $hash{'error'}='Bad data';
4175: return (\%hash, $string);
4176: }
4177: } else {
4178: $string =~ s/^(.*?)=//;
4179: $key=&unescape($1);
4180: }
4181: $string =~ s/^=//;
4182:
4183: #value
4184: my $value='';
4185: if($string =~ /^__HASH_REF__/) {
4186: ($value, $string)=&str2hashref($string);
4187: if(defined($value->{'error'})) {
4188: $hash{'error'}='Bad data';
4189: return (\%hash, $string);
4190: }
4191: } elsif($string =~ /^__ARRAY_REF__/) {
4192: ($value, $string)=&str2arrayref($string);
4193: if($value->[0] eq 'Array reference error') {
4194: $hash{'error'}='Bad data';
4195: return (\%hash, $string);
4196: }
4197: } else {
4198: $value=&get_scalar(\$string,'__END_HASH_REF__');
4199: }
4200: $string =~ s/^&//;
4201:
4202: $hash{$key}=$value;
4203: }
4204:
4205: $string =~ s/^__END_HASH_REF__//;
4206:
4207: return (\%hash, $string);
4208: }
4209:
4210: sub str2array {
4211: my ($string)=@_;
4212: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4213: return @$array;
4214: }
4215:
4216: sub str2arrayref {
4217: my ($string) = @_;
4218: my @array;
4219:
4220: if($string !~ /^__ARRAY_REF__/) {
4221: if (! ($string eq '' || !defined($string))) {
4222: $array[0]='Array reference error';
4223: }
4224: return (\@array, $string);
4225: }
4226:
4227: $string =~ s/^__ARRAY_REF__//;
4228:
4229: while($string !~ /^__END_ARRAY_REF__/) {
4230: my $value='';
4231: if($string =~ /^__HASH_REF__/) {
4232: ($value, $string)=&str2hashref($string);
4233: if(defined($value->{'error'})) {
4234: $array[0] ='Array reference error';
4235: return (\@array, $string);
4236: }
4237: } elsif($string =~ /^__ARRAY_REF__/) {
4238: ($value, $string)=&str2arrayref($string);
4239: if($value->[0] eq 'Array reference error') {
4240: $array[0] ='Array reference error';
4241: return (\@array, $string);
4242: }
4243: } else {
4244: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4245: }
4246: $string =~ s/^&//;
4247:
4248: push(@array, $value);
4249: }
4250:
4251: $string =~ s/^__END_ARRAY_REF__//;
4252:
4253: return (\@array, $string);
4254: }
4255:
4256: # -------------------------------------------------------------------Temp Store
4257:
4258: sub tmpreset {
4259: my ($symb,$namespace,$domain,$stuname) = @_;
4260: if (!$symb) {
4261: $symb=&symbread();
4262: if (!$symb) { $symb= $env{'request.url'}; }
4263: }
4264: $symb=escape($symb);
4265:
4266: if (!$namespace) { $namespace=$env{'request.state'}; }
4267: $namespace=~s/\//\_/g;
4268: $namespace=~s/\W//g;
4269:
4270: if (!$domain) { $domain=$env{'user.domain'}; }
4271: if (!$stuname) { $stuname=$env{'user.name'}; }
4272: if ($domain eq 'public' && $stuname eq 'public') {
4273: $stuname=$ENV{'REMOTE_ADDR'};
4274: }
4275: my $path=LONCAPA::tempdir();
4276: my %hash;
4277: if (tie(%hash,'GDBM_File',
4278: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4279: &GDBM_WRCREAT(),0640)) {
4280: foreach my $key (keys(%hash)) {
4281: if ($key=~ /:$symb/) {
4282: delete($hash{$key});
4283: }
4284: }
4285: }
4286: }
4287:
4288: sub tmpstore {
4289: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4290:
4291: if (!$symb) {
4292: $symb=&symbread();
4293: if (!$symb) { $symb= $env{'request.url'}; }
4294: }
4295: $symb=escape($symb);
4296:
4297: if (!$namespace) {
4298: # I don't think we would ever want to store this for a course.
4299: # it seems this will only be used if we don't have a course.
4300: #$namespace=$env{'request.course.id'};
4301: #if (!$namespace) {
4302: $namespace=$env{'request.state'};
4303: #}
4304: }
4305: $namespace=~s/\//\_/g;
4306: $namespace=~s/\W//g;
4307: if (!$domain) { $domain=$env{'user.domain'}; }
4308: if (!$stuname) { $stuname=$env{'user.name'}; }
4309: if ($domain eq 'public' && $stuname eq 'public') {
4310: $stuname=$ENV{'REMOTE_ADDR'};
4311: }
4312: my $now=time;
4313: my %hash;
4314: my $path=LONCAPA::tempdir();
4315: if (tie(%hash,'GDBM_File',
4316: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4317: &GDBM_WRCREAT(),0640)) {
4318: $hash{"version:$symb"}++;
4319: my $version=$hash{"version:$symb"};
4320: my $allkeys='';
4321: foreach my $key (keys(%$storehash)) {
4322: $allkeys.=$key.':';
4323: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4324: }
4325: $hash{"$version:$symb:timestamp"}=$now;
4326: $allkeys.='timestamp';
4327: $hash{"$version:keys:$symb"}=$allkeys;
4328: if (untie(%hash)) {
4329: return 'ok';
4330: } else {
4331: return "error:$!";
4332: }
4333: } else {
4334: return "error:$!";
4335: }
4336: }
4337:
4338: # -----------------------------------------------------------------Temp Restore
4339:
4340: sub tmprestore {
4341: my ($symb,$namespace,$domain,$stuname) = @_;
4342:
4343: if (!$symb) {
4344: $symb=&symbread();
4345: if (!$symb) { $symb= $env{'request.url'}; }
4346: }
4347: $symb=escape($symb);
4348:
4349: if (!$namespace) { $namespace=$env{'request.state'}; }
4350:
4351: if (!$domain) { $domain=$env{'user.domain'}; }
4352: if (!$stuname) { $stuname=$env{'user.name'}; }
4353: if ($domain eq 'public' && $stuname eq 'public') {
4354: $stuname=$ENV{'REMOTE_ADDR'};
4355: }
4356: my %returnhash;
4357: $namespace=~s/\//\_/g;
4358: $namespace=~s/\W//g;
4359: my %hash;
4360: my $path=LONCAPA::tempdir();
4361: if (tie(%hash,'GDBM_File',
4362: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4363: &GDBM_READER(),0640)) {
4364: my $version=$hash{"version:$symb"};
4365: $returnhash{'version'}=$version;
4366: my $scope;
4367: for ($scope=1;$scope<=$version;$scope++) {
4368: my $vkeys=$hash{"$scope:keys:$symb"};
4369: my @keys=split(/:/,$vkeys);
4370: my $key;
4371: $returnhash{"$scope:keys"}=$vkeys;
4372: foreach $key (@keys) {
4373: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4374: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4375: }
4376: }
4377: if (!(untie(%hash))) {
4378: return "error:$!";
4379: }
4380: } else {
4381: return "error:$!";
4382: }
4383: return %returnhash;
4384: }
4385:
4386: # ----------------------------------------------------------------------- Store
4387:
4388: sub store {
4389: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4390: my $home='';
4391:
4392: if ($stuname) { $home=&homeserver($stuname,$domain); }
4393:
4394: $symb=&symbclean($symb);
4395: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4396:
4397: if (!$domain) { $domain=$env{'user.domain'}; }
4398: if (!$stuname) { $stuname=$env{'user.name'}; }
4399:
4400: &devalidate($symb,$stuname,$domain);
4401:
4402: $symb=escape($symb);
4403: if (!$namespace) {
4404: unless ($namespace=$env{'request.course.id'}) {
4405: return '';
4406: }
4407: }
4408: if (!$home) { $home=$env{'user.home'}; }
4409:
4410: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4411: $$storehash{'host'}=$perlvar{'lonHostID'};
4412:
4413: my $namevalue='';
4414: foreach my $key (keys(%$storehash)) {
4415: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4416: }
4417: $namevalue=~s/\&$//;
4418: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4419: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4420: }
4421:
4422: # -------------------------------------------------------------- Critical Store
4423:
4424: sub cstore {
4425: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4426: my $home='';
4427:
4428: if ($stuname) { $home=&homeserver($stuname,$domain); }
4429:
4430: $symb=&symbclean($symb);
4431: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4432:
4433: if (!$domain) { $domain=$env{'user.domain'}; }
4434: if (!$stuname) { $stuname=$env{'user.name'}; }
4435:
4436: &devalidate($symb,$stuname,$domain);
4437:
4438: $symb=escape($symb);
4439: if (!$namespace) {
4440: unless ($namespace=$env{'request.course.id'}) {
4441: return '';
4442: }
4443: }
4444: if (!$home) { $home=$env{'user.home'}; }
4445:
4446: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4447: $$storehash{'host'}=$perlvar{'lonHostID'};
4448:
4449: my $namevalue='';
4450: foreach my $key (keys(%$storehash)) {
4451: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4452: }
4453: $namevalue=~s/\&$//;
4454: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4455: return critical
4456: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4457: }
4458:
4459: # --------------------------------------------------------------------- Restore
4460:
4461: sub restore {
4462: my ($symb,$namespace,$domain,$stuname) = @_;
4463: my $home='';
4464:
4465: if ($stuname) { $home=&homeserver($stuname,$domain); }
4466:
4467: if (!$symb) {
4468: unless ($symb=escape(&symbread())) { return ''; }
4469: } else {
4470: $symb=&escape(&symbclean($symb));
4471: }
4472: if (!$namespace) {
4473: unless ($namespace=$env{'request.course.id'}) {
4474: return '';
4475: }
4476: }
4477: if (!$domain) { $domain=$env{'user.domain'}; }
4478: if (!$stuname) { $stuname=$env{'user.name'}; }
4479: if (!$home) { $home=$env{'user.home'}; }
4480: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4481:
4482: my %returnhash=();
4483: foreach my $line (split(/\&/,$answer)) {
4484: my ($name,$value)=split(/\=/,$line);
4485: $returnhash{&unescape($name)}=&thaw_unescape($value);
4486: }
4487: my $version;
4488: for ($version=1;$version<=$returnhash{'version'};$version++) {
4489: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4490: $returnhash{$item}=$returnhash{$version.':'.$item};
4491: }
4492: }
4493: return %returnhash;
4494: }
4495:
4496: # ---------------------------------------------------------- Course Description
4497: #
4498: #
4499:
4500: sub coursedescription {
4501: my ($courseid,$args)=@_;
4502: $courseid=~s/^\///;
4503: $courseid=~s/\_/\//g;
4504: my ($cdomain,$cnum)=split(/\//,$courseid);
4505: my $chome=&homeserver($cnum,$cdomain);
4506: my $normalid=$cdomain.'_'.$cnum;
4507: # need to always cache even if we get errors otherwise we keep
4508: # trying and trying and trying to get the course description.
4509: my %envhash=();
4510: my %returnhash=();
4511:
4512: my $expiretime=600;
4513: if ($env{'request.course.id'} eq $normalid) {
4514: $expiretime=120;
4515: }
4516:
4517: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4518: if (!$args->{'freshen_cache'}
4519: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4520: foreach my $key (keys(%env)) {
4521: next if ($key !~ /^\Q$prefix\E(.*)/);
4522: my ($setting) = $1;
4523: $returnhash{$setting} = $env{$key};
4524: }
4525: return %returnhash;
4526: }
4527:
4528: # get the data again
4529:
4530: if (!$args->{'one_time'}) {
4531: $envhash{'course.'.$normalid.'.last_cache'}=time;
4532: }
4533:
4534: if ($chome ne 'no_host') {
4535: %returnhash=&dump('environment',$cdomain,$cnum);
4536: if (!exists($returnhash{'con_lost'})) {
4537: my $username = $env{'user.name'}; # Defult username
4538: if(defined $args->{'user'}) {
4539: $username = $args->{'user'};
4540: }
4541: $returnhash{'home'}= $chome;
4542: $returnhash{'domain'} = $cdomain;
4543: $returnhash{'num'} = $cnum;
4544: if (!defined($returnhash{'type'})) {
4545: $returnhash{'type'} = 'Course';
4546: }
4547: while (my ($name,$value) = each %returnhash) {
4548: $envhash{'course.'.$normalid.'.'.$name}=$value;
4549: }
4550: $returnhash{'url'}=&clutter($returnhash{'url'});
4551: $returnhash{'fn'}=LONCAPA::tempdir() .
4552: $username.'_'.$cdomain.'_'.$cnum;
4553: $envhash{'course.'.$normalid.'.home'}=$chome;
4554: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4555: $envhash{'course.'.$normalid.'.num'}=$cnum;
4556: }
4557: }
4558: if (!$args->{'one_time'}) {
4559: &appenv(\%envhash);
4560: }
4561: return %returnhash;
4562: }
4563:
4564: sub update_released_required {
4565: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4566: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4567: $cid = $env{'request.course.id'};
4568: $cdom = $env{'course.'.$cid.'.domain'};
4569: $cnum = $env{'course.'.$cid.'.num'};
4570: $chome = $env{'course.'.$cid.'.home'};
4571: }
4572: if ($needsrelease) {
4573: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4574: my $needsupdate;
4575: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4576: $needsupdate = 1;
4577: } else {
4578: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4579: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4580: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4581: $needsupdate = 1;
4582: }
4583: }
4584: if ($needsupdate) {
4585: my %needshash = (
4586: 'internal.releaserequired' => $needsrelease,
4587: );
4588: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4589: if ($putresult eq 'ok') {
4590: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4591: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4592: if (ref($crsinfo{$cid}) eq 'HASH') {
4593: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4594: &courseidput($cdom,\%crsinfo,$chome,'notime');
4595: }
4596: }
4597: }
4598: }
4599: return;
4600: }
4601:
4602: # -------------------------------------------------See if a user is privileged
4603:
4604: sub privileged {
4605: my ($username,$domain)=@_;
4606:
4607: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4608: my $now = time;
4609:
4610: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4611: my ($trole, $tend, $tstart) = split(/_/, $role);
4612: if (($trole eq 'dc') || ($trole eq 'su')) {
4613: return 1 unless ($tend && $tend < $now)
4614: or ($tstart && $tstart > $now);
4615: }
4616: }
4617:
4618: return 0;
4619: }
4620:
4621: # -------------------------------------------------------- Get user privileges
4622:
4623: sub rolesinit {
4624: my ($domain, $username) = @_;
4625: my %userroles = ('user.login.time' => time);
4626: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4627:
4628: # firstaccess and timerinterval are related to timed maps/resources.
4629: # also, blocking can be triggered by an activating timer
4630: # it's saved in the user's %env.
4631: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4632: my %timerinterval = &dump('timerinterval', $domain, $username);
4633: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4634: %timerintchk, %timerintenv);
4635:
4636: foreach my $key (keys(%firstaccess)) {
4637: my ($cid, $rest) = split(/\0/, $key);
4638: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4639: }
4640:
4641: foreach my $key (keys(%timerinterval)) {
4642: my ($cid,$rest) = split(/\0/,$key);
4643: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4644: }
4645:
4646: my %allroles=();
4647: my %allgroups=();
4648:
4649: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4650: my $role = $rolesdump{$area};
4651: $area =~ s/\_\w\w$//;
4652:
4653: my ($trole, $tend, $tstart, $group_privs);
4654:
4655: if ($role =~ /^cr/) {
4656: # Custom role, defined by a user
4657: # e.g., user.role.cr/msu/smith/mynewrole
4658: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4659: $trole = $1;
4660: ($tend, $tstart) = split('_', $2);
4661: } else {
4662: $trole = $role;
4663: }
4664: } elsif ($role =~ m|^gr/|) {
4665: # Role of member in a group, defined within a course/community
4666: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
4667: ($trole, $tend, $tstart) = split(/_/, $role);
4668: next if $tstart eq '-1';
4669: ($trole, $group_privs) = split(/\//, $trole);
4670: $group_privs = &unescape($group_privs);
4671: } else {
4672: # Just a normal role, defined in roles.tab
4673: ($trole, $tend, $tstart) = split(/_/,$role);
4674: }
4675:
4676: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4677: $username);
4678: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4679:
4680: # role expired or not available yet?
4681: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
4682: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
4683:
4684: next if $area eq '' or $trole eq '';
4685:
4686: my $spec = "$trole.$area";
4687: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
4688:
4689: if ($trole =~ /^cr\//) {
4690: # Custom role, defined by a user
4691: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4692: } elsif ($trole eq 'gr') {
4693: # Role of a member in a group, defined within a course/community
4694: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4695: next;
4696: } else {
4697: # Normal role, defined in roles.tab
4698: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4699: }
4700:
4701: my $cid = $tdomain.'_'.$trest;
4702: unless ($firstaccchk{$cid}) {
4703: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4704: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4705: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4706: $coursetimerstarts{$cid}{$item};
4707: }
4708: }
4709: $firstaccchk{$cid} = 1;
4710: }
4711: unless ($timerintchk{$cid}) {
4712: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
4713: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
4714: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
4715: $coursetimerintervals{$cid}{$item};
4716: }
4717: }
4718: $timerintchk{$cid} = 1;
4719: }
4720: }
4721:
4722: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
4723: \%allroles, \%allgroups);
4724: $env{'user.adv'} = $userroles{'user.adv'};
4725:
4726: return (\%userroles,\%firstaccenv,\%timerintenv);
4727: }
4728:
4729: sub set_arearole {
4730: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4731: # log the associated role with the area
4732: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4733: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4734: }
4735:
4736: sub custom_roleprivs {
4737: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4738: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4739: my $homsvr=homeserver($rauthor,$rdomain);
4740: if (&hostname($homsvr) ne '') {
4741: my ($rdummy,$roledef)=
4742: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4743: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4744: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4745: if (defined($syspriv)) {
4746: if ($trest =~ /^$match_community$/) {
4747: $syspriv =~ s/bre\&S//;
4748: }
4749: $$allroles{'cm./'}.=':'.$syspriv;
4750: $$allroles{$spec.'./'}.=':'.$syspriv;
4751: }
4752: if ($tdomain ne '') {
4753: if (defined($dompriv)) {
4754: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4755: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4756: }
4757: if (($trest ne '') && (defined($coursepriv))) {
4758: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4759: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4760: }
4761: }
4762: }
4763: }
4764: }
4765:
4766: sub group_roleprivs {
4767: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4768: my $access = 1;
4769: my $now = time;
4770: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4771: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4772: if ($access) {
4773: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4774: $$allgroups{$course}{$group} .=':'.$group_privs;
4775: }
4776: }
4777:
4778: sub standard_roleprivs {
4779: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4780: if (defined($pr{$trole.':s'})) {
4781: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4782: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4783: }
4784: if ($tdomain ne '') {
4785: if (defined($pr{$trole.':d'})) {
4786: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4787: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4788: }
4789: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4790: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4791: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4792: }
4793: }
4794: }
4795:
4796: sub set_userprivs {
4797: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4798: my $author=0;
4799: my $adv=0;
4800: my %grouproles = ();
4801: if (keys(%{$allgroups}) > 0) {
4802: my @groupkeys;
4803: foreach my $role (keys(%{$allroles})) {
4804: push(@groupkeys,$role);
4805: }
4806: if (ref($groups_roles) eq 'HASH') {
4807: foreach my $key (keys(%{$groups_roles})) {
4808: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4809: push(@groupkeys,$key);
4810: }
4811: }
4812: }
4813: if (@groupkeys > 0) {
4814: foreach my $role (@groupkeys) {
4815: my ($trole,$area,$sec,$extendedarea);
4816: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4817: $trole = $1;
4818: $area = $2;
4819: $sec = $3;
4820: $extendedarea = $area.$sec;
4821: if (exists($$allgroups{$area})) {
4822: foreach my $group (keys(%{$$allgroups{$area}})) {
4823: my $spec = $trole.'.'.$extendedarea;
4824: $grouproles{$spec.'.'.$area.'/'.$group} =
4825: $$allgroups{$area}{$group};
4826: }
4827: }
4828: }
4829: }
4830: }
4831: }
4832: foreach my $group (keys(%grouproles)) {
4833: $$allroles{$group} = $grouproles{$group};
4834: }
4835: foreach my $role (keys(%{$allroles})) {
4836: my %thesepriv;
4837: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4838: foreach my $item (split(/:/,$$allroles{$role})) {
4839: if ($item ne '') {
4840: my ($privilege,$restrictions)=split(/&/,$item);
4841: if ($restrictions eq '') {
4842: $thesepriv{$privilege}='F';
4843: } elsif ($thesepriv{$privilege} ne 'F') {
4844: $thesepriv{$privilege}.=$restrictions;
4845: }
4846: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4847: }
4848: }
4849: my $thesestr='';
4850: foreach my $priv (sort(keys(%thesepriv))) {
4851: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4852: }
4853: $userroles->{'user.priv.'.$role} = $thesestr;
4854: }
4855: return ($author,$adv);
4856: }
4857:
4858: sub role_status {
4859: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4860: my @pwhere = ();
4861: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4862: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4863: unless (!defined($$role) || $$role eq '') {
4864: $$where=join('.',@pwhere);
4865: $$trolecode=$$role.'.'.$$where;
4866: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4867: $$tstatus='is';
4868: if ($$tstart && $$tstart>$update) {
4869: $$tstatus='future';
4870: if ($$tstart<$now) {
4871: if ($$tstart && $$tstart>$refresh) {
4872: if (($$where ne '') && ($$role ne '')) {
4873: my (%allroles,%allgroups,$group_privs,
4874: %groups_roles,@rolecodes);
4875: my %userroles = (
4876: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4877: );
4878: @rolecodes = ('cm');
4879: my $spec=$$role.'.'.$$where;
4880: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4881: if ($$role =~ /^cr\//) {
4882: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4883: push(@rolecodes,'cr');
4884: } elsif ($$role eq 'gr') {
4885: push(@rolecodes,$$role);
4886: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4887: $env{'user.name'});
4888: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4889: (undef,my $group_privs) = split(/\//,$trole);
4890: $group_privs = &unescape($group_privs);
4891: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4892: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4893: &get_groups_roles($tdomain,$trest,
4894: \%course_roles,\@rolecodes,
4895: \%groups_roles);
4896: } else {
4897: push(@rolecodes,$$role);
4898: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4899: }
4900: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4901: &appenv(\%userroles,\@rolecodes);
4902: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4903: }
4904: }
4905: $$tstatus = 'is';
4906: }
4907: }
4908: if ($$tend) {
4909: if ($$tend<$update) {
4910: $$tstatus='expired';
4911: } elsif ($$tend<$now) {
4912: $$tstatus='will_not';
4913: }
4914: }
4915: }
4916: }
4917: }
4918:
4919: sub get_groups_roles {
4920: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4921: return unless((ref($cdom_courseroles) eq 'HASH') &&
4922: (ref($rolecodes) eq 'ARRAY') &&
4923: (ref($groups_roles) eq 'HASH'));
4924: if (keys(%{$cdom_courseroles}) > 0) {
4925: my ($cnum) = ($rest =~ /^($match_courseid)/);
4926: if ($cdom ne '' && $cnum ne '') {
4927: foreach my $key (keys(%{$cdom_courseroles})) {
4928: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4929: my $crsrole = $1;
4930: my $crssec = $2;
4931: if ($crsrole =~ /^cr/) {
4932: unless (grep(/^cr$/,@{$rolecodes})) {
4933: push(@{$rolecodes},'cr');
4934: }
4935: } else {
4936: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4937: push(@{$rolecodes},$crsrole);
4938: }
4939: }
4940: my $rolekey = "$crsrole./$cdom/$cnum";
4941: if ($crssec ne '') {
4942: $rolekey .= "/$crssec";
4943: }
4944: $rolekey .= './';
4945: $groups_roles->{$rolekey} = $rolecodes;
4946: }
4947: }
4948: }
4949: }
4950: return;
4951: }
4952:
4953: sub delete_env_groupprivs {
4954: my ($where,$courseroles,$possroles) = @_;
4955: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4956: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4957: unless (ref($courseroles->{$udom}) eq 'HASH') {
4958: %{$courseroles->{$udom}} =
4959: &get_my_roles('','','userroles',['active'],
4960: $possroles,[$udom],1);
4961: }
4962: if (ref($courseroles->{$udom}) eq 'HASH') {
4963: foreach my $item (keys(%{$courseroles->{$udom}})) {
4964: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4965: my $area = '/'.$cdom.'/'.$cnum;
4966: my $privkey = "user.priv.$crsrole.$area";
4967: if ($crssec ne '') {
4968: $privkey .= '/'.$crssec;
4969: }
4970: $privkey .= ".$area/$group";
4971: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
4972: }
4973: }
4974: return;
4975: }
4976:
4977: sub check_adhoc_privs {
4978: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
4979: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4980: if ($env{$cckey}) {
4981: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4982: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4983: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4984: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4985: }
4986: } else {
4987: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4988: }
4989: }
4990:
4991: sub set_adhoc_privileges {
4992: # role can be cc or ca
4993: my ($dcdom,$pickedcourse,$role,$caller) = @_;
4994: my $area = '/'.$dcdom.'/'.$pickedcourse;
4995: my $spec = $role.'.'.$area;
4996: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4997: $env{'user.name'});
4998: my %ccrole = ();
4999: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5000: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5001: &appenv(\%userroles,[$role,'cm']);
5002: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5003: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5004: &appenv( {'request.role' => $spec,
5005: 'request.role.domain' => $dcdom,
5006: 'request.course.sec' => ''
5007: }
5008: );
5009: my $tadv=0;
5010: if (&allowed('adv') eq 'F') { $tadv=1; }
5011: &appenv({'request.role.adv' => $tadv});
5012: }
5013: }
5014:
5015: # --------------------------------------------------------------- get interface
5016:
5017: sub get {
5018: my ($namespace,$storearr,$udomain,$uname)=@_;
5019: my $items='';
5020: foreach my $item (@$storearr) {
5021: $items.=&escape($item).'&';
5022: }
5023: $items=~s/\&$//;
5024: if (!$udomain) { $udomain=$env{'user.domain'}; }
5025: if (!$uname) { $uname=$env{'user.name'}; }
5026: my $uhome=&homeserver($uname,$udomain);
5027:
5028: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5029: my @pairs=split(/\&/,$rep);
5030: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5031: return @pairs;
5032: }
5033: my %returnhash=();
5034: my $i=0;
5035: foreach my $item (@$storearr) {
5036: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5037: $i++;
5038: }
5039: return %returnhash;
5040: }
5041:
5042: # --------------------------------------------------------------- del interface
5043:
5044: sub del {
5045: my ($namespace,$storearr,$udomain,$uname)=@_;
5046: my $items='';
5047: foreach my $item (@$storearr) {
5048: $items.=&escape($item).'&';
5049: }
5050:
5051: $items=~s/\&$//;
5052: if (!$udomain) { $udomain=$env{'user.domain'}; }
5053: if (!$uname) { $uname=$env{'user.name'}; }
5054: my $uhome=&homeserver($uname,$udomain);
5055: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5056: }
5057:
5058: # -------------------------------------------------------------- dump interface
5059:
5060: sub dump {
5061: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5062: if (!$udomain) { $udomain=$env{'user.domain'}; }
5063: if (!$uname) { $uname=$env{'user.name'}; }
5064: my $uhome=&homeserver($uname,$udomain);
5065:
5066: if ($regexp) {
5067: $regexp=&escape($regexp);
5068: } else {
5069: $regexp='.';
5070: }
5071: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5072: my @pairs=split(/\&/,$rep);
5073: my %returnhash=();
5074: if (!($rep =~ /^error/ )) {
5075: foreach my $item (@pairs) {
5076: my ($key,$value)=split(/=/,$item,2);
5077: $key = &unescape($key);
5078: next if ($key =~ /^error: 2 /);
5079: $returnhash{$key}=&thaw_unescape($value);
5080: }
5081: }
5082: return %returnhash;
5083: }
5084:
5085:
5086: # --------------------------------------------------------- dumpstore interface
5087:
5088: sub dumpstore {
5089: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5090: if (!$udomain) { $udomain=$env{'user.domain'}; }
5091: if (!$uname) { $uname=$env{'user.name'}; }
5092: my $uhome=&homeserver($uname,$udomain);
5093: if ($regexp) {
5094: $regexp=&escape($regexp);
5095: } else {
5096: $regexp='.';
5097: }
5098: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5099: my @pairs=split(/\&/,$rep);
5100: my %returnhash=();
5101: foreach my $item (@pairs) {
5102: my ($key,$value)=split(/=/,$item,2);
5103: next if ($key =~ /^error: 2 /);
5104: $returnhash{$key}=&thaw_unescape($value);
5105: }
5106: return %returnhash;
5107: }
5108:
5109: # -------------------------------------------------------------- keys interface
5110:
5111: sub getkeys {
5112: my ($namespace,$udomain,$uname)=@_;
5113: if (!$udomain) { $udomain=$env{'user.domain'}; }
5114: if (!$uname) { $uname=$env{'user.name'}; }
5115: my $uhome=&homeserver($uname,$udomain);
5116: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5117: my @keyarray=();
5118: foreach my $key (split(/\&/,$rep)) {
5119: next if ($key =~ /^error: 2 /);
5120: push(@keyarray,&unescape($key));
5121: }
5122: return @keyarray;
5123: }
5124:
5125: # --------------------------------------------------------------- currentdump
5126: sub currentdump {
5127: my ($courseid,$sdom,$sname)=@_;
5128: $courseid = $env{'request.course.id'} if (! defined($courseid));
5129: $sdom = $env{'user.domain'} if (! defined($sdom));
5130: $sname = $env{'user.name'} if (! defined($sname));
5131: my $uhome = &homeserver($sname,$sdom);
5132: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5133: return if ($rep =~ /^(error:|no_such_host)/);
5134: #
5135: my %returnhash=();
5136: #
5137: if ($rep eq "unknown_cmd") {
5138: # an old lond will not know currentdump
5139: # Do a dump and make it look like a currentdump
5140: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5141: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5142: my %hash = @tmp;
5143: @tmp=();
5144: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5145: } else {
5146: my @pairs=split(/\&/,$rep);
5147: foreach my $pair (@pairs) {
5148: my ($key,$value)=split(/=/,$pair,2);
5149: my ($symb,$param) = split(/:/,$key);
5150: $returnhash{&unescape($symb)}->{&unescape($param)} =
5151: &thaw_unescape($value);
5152: }
5153: }
5154: return %returnhash;
5155: }
5156:
5157: sub convert_dump_to_currentdump{
5158: my %hash = %{shift()};
5159: my %returnhash;
5160: # Code ripped from lond, essentially. The only difference
5161: # here is the unescaping done by lonnet::dump(). Conceivably
5162: # we might run in to problems with parameter names =~ /^v\./
5163: while (my ($key,$value) = each(%hash)) {
5164: my ($v,$symb,$param) = split(/:/,$key);
5165: $symb = &unescape($symb);
5166: $param = &unescape($param);
5167: next if ($v eq 'version' || $symb eq 'keys');
5168: next if (exists($returnhash{$symb}) &&
5169: exists($returnhash{$symb}->{$param}) &&
5170: $returnhash{$symb}->{'v.'.$param} > $v);
5171: $returnhash{$symb}->{$param}=$value;
5172: $returnhash{$symb}->{'v.'.$param}=$v;
5173: }
5174: #
5175: # Remove all of the keys in the hashes which keep track of
5176: # the version of the parameter.
5177: while (my ($symb,$param_hash) = each(%returnhash)) {
5178: # use a foreach because we are going to delete from the hash.
5179: foreach my $key (keys(%$param_hash)) {
5180: delete($param_hash->{$key}) if ($key =~ /^v\./);
5181: }
5182: }
5183: return \%returnhash;
5184: }
5185:
5186: # ------------------------------------------------------ critical inc interface
5187:
5188: sub cinc {
5189: return &inc(@_,'critical');
5190: }
5191:
5192: # --------------------------------------------------------------- inc interface
5193:
5194: sub inc {
5195: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5196: if (!$udomain) { $udomain=$env{'user.domain'}; }
5197: if (!$uname) { $uname=$env{'user.name'}; }
5198: my $uhome=&homeserver($uname,$udomain);
5199: my $items='';
5200: if (! ref($store)) {
5201: # got a single value, so use that instead
5202: $items = &escape($store).'=&';
5203: } elsif (ref($store) eq 'SCALAR') {
5204: $items = &escape($$store).'=&';
5205: } elsif (ref($store) eq 'ARRAY') {
5206: $items = join('=&',map {&escape($_);} @{$store});
5207: } elsif (ref($store) eq 'HASH') {
5208: while (my($key,$value) = each(%{$store})) {
5209: $items.= &escape($key).'='.&escape($value).'&';
5210: }
5211: }
5212: $items=~s/\&$//;
5213: if ($critical) {
5214: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5215: } else {
5216: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5217: }
5218: }
5219:
5220: # --------------------------------------------------------------- put interface
5221:
5222: sub put {
5223: my ($namespace,$storehash,$udomain,$uname)=@_;
5224: if (!$udomain) { $udomain=$env{'user.domain'}; }
5225: if (!$uname) { $uname=$env{'user.name'}; }
5226: my $uhome=&homeserver($uname,$udomain);
5227: my $items='';
5228: foreach my $item (keys(%$storehash)) {
5229: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5230: }
5231: $items=~s/\&$//;
5232: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5233: }
5234:
5235: # ------------------------------------------------------------ newput interface
5236:
5237: sub newput {
5238: my ($namespace,$storehash,$udomain,$uname)=@_;
5239: if (!$udomain) { $udomain=$env{'user.domain'}; }
5240: if (!$uname) { $uname=$env{'user.name'}; }
5241: my $uhome=&homeserver($uname,$udomain);
5242: my $items='';
5243: foreach my $key (keys(%$storehash)) {
5244: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5245: }
5246: $items=~s/\&$//;
5247: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5248: }
5249:
5250: # --------------------------------------------------------- putstore interface
5251:
5252: sub putstore {
5253: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5254: if (!$udomain) { $udomain=$env{'user.domain'}; }
5255: if (!$uname) { $uname=$env{'user.name'}; }
5256: my $uhome=&homeserver($uname,$udomain);
5257: my $items='';
5258: foreach my $key (keys(%$storehash)) {
5259: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5260: }
5261: $items=~s/\&$//;
5262: my $esc_symb=&escape($symb);
5263: my $esc_v=&escape($version);
5264: my $reply =
5265: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5266: $uhome);
5267: if ($reply eq 'unknown_cmd') {
5268: # gfall back to way things use to be done
5269: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5270: $uname);
5271: }
5272: return $reply;
5273: }
5274:
5275: sub old_putstore {
5276: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5277: if (!$udomain) { $udomain=$env{'user.domain'}; }
5278: if (!$uname) { $uname=$env{'user.name'}; }
5279: my $uhome=&homeserver($uname,$udomain);
5280: my %newstorehash;
5281: foreach my $item (keys(%$storehash)) {
5282: my $key = $version.':'.&escape($symb).':'.$item;
5283: $newstorehash{$key} = $storehash->{$item};
5284: }
5285: my $items='';
5286: my %allitems = ();
5287: foreach my $item (keys(%newstorehash)) {
5288: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5289: my $key = $1.':keys:'.$2;
5290: $allitems{$key} .= $3.':';
5291: }
5292: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5293: }
5294: foreach my $item (keys(%allitems)) {
5295: $allitems{$item} =~ s/\:$//;
5296: $items.= $item.'='.$allitems{$item}.'&';
5297: }
5298: $items=~s/\&$//;
5299: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5300: }
5301:
5302: # ------------------------------------------------------ critical put interface
5303:
5304: sub cput {
5305: my ($namespace,$storehash,$udomain,$uname)=@_;
5306: if (!$udomain) { $udomain=$env{'user.domain'}; }
5307: if (!$uname) { $uname=$env{'user.name'}; }
5308: my $uhome=&homeserver($uname,$udomain);
5309: my $items='';
5310: foreach my $item (keys(%$storehash)) {
5311: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5312: }
5313: $items=~s/\&$//;
5314: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5315: }
5316:
5317: # -------------------------------------------------------------- eget interface
5318:
5319: sub eget {
5320: my ($namespace,$storearr,$udomain,$uname)=@_;
5321: my $items='';
5322: foreach my $item (@$storearr) {
5323: $items.=&escape($item).'&';
5324: }
5325: $items=~s/\&$//;
5326: if (!$udomain) { $udomain=$env{'user.domain'}; }
5327: if (!$uname) { $uname=$env{'user.name'}; }
5328: my $uhome=&homeserver($uname,$udomain);
5329: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5330: my @pairs=split(/\&/,$rep);
5331: my %returnhash=();
5332: my $i=0;
5333: foreach my $item (@$storearr) {
5334: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5335: $i++;
5336: }
5337: return %returnhash;
5338: }
5339:
5340: # ------------------------------------------------------------ tmpput interface
5341: sub tmpput {
5342: my ($storehash,$server,$context)=@_;
5343: my $items='';
5344: foreach my $item (keys(%$storehash)) {
5345: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5346: }
5347: $items=~s/\&$//;
5348: if (defined($context)) {
5349: $items .= ':'.&escape($context);
5350: }
5351: return &reply("tmpput:$items",$server);
5352: }
5353:
5354: # ------------------------------------------------------------ tmpget interface
5355: sub tmpget {
5356: my ($token,$server)=@_;
5357: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5358: my $rep=&reply("tmpget:$token",$server);
5359: my %returnhash;
5360: foreach my $item (split(/\&/,$rep)) {
5361: my ($key,$value)=split(/=/,$item);
5362: next if ($key =~ /^error: 2 /);
5363: $returnhash{&unescape($key)}=&thaw_unescape($value);
5364: }
5365: return %returnhash;
5366: }
5367:
5368: # ------------------------------------------------------------ tmpdel interface
5369: sub tmpdel {
5370: my ($token,$server)=@_;
5371: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5372: return &reply("tmpdel:$token",$server);
5373: }
5374:
5375: # -------------------------------------------------- portfolio access checking
5376:
5377: sub portfolio_access {
5378: my ($requrl) = @_;
5379: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5380: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5381: if ($result) {
5382: my %setters;
5383: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5384: my ($startblock,$endblock) =
5385: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5386: if ($startblock && $endblock) {
5387: return 'B';
5388: }
5389: } else {
5390: my ($startblock,$endblock) =
5391: &Apache::loncommon::blockcheck(\%setters,'port');
5392: if ($startblock && $endblock) {
5393: return 'B';
5394: }
5395: }
5396: }
5397: if ($result eq 'ok') {
5398: return 'F';
5399: } elsif ($result =~ /^[^:]+:guest_/) {
5400: return 'A';
5401: }
5402: return '';
5403: }
5404:
5405: sub get_portfolio_access {
5406: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5407:
5408: if (!ref($access_hash)) {
5409: my $current_perms = &get_portfile_permissions($udom,$unum);
5410: my %access_controls = &get_access_controls($current_perms,$group,
5411: $file_name);
5412: $access_hash = $access_controls{$file_name};
5413: }
5414:
5415: my ($public,$guest,@domains,@users,@courses,@groups);
5416: my $now = time;
5417: if (ref($access_hash) eq 'HASH') {
5418: foreach my $key (keys(%{$access_hash})) {
5419: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5420: if ($start > $now) {
5421: next;
5422: }
5423: if ($end && $end<$now) {
5424: next;
5425: }
5426: if ($scope eq 'public') {
5427: $public = $key;
5428: last;
5429: } elsif ($scope eq 'guest') {
5430: $guest = $key;
5431: } elsif ($scope eq 'domains') {
5432: push(@domains,$key);
5433: } elsif ($scope eq 'users') {
5434: push(@users,$key);
5435: } elsif ($scope eq 'course') {
5436: push(@courses,$key);
5437: } elsif ($scope eq 'group') {
5438: push(@groups,$key);
5439: }
5440: }
5441: if ($public) {
5442: return 'ok';
5443: }
5444: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5445: if ($guest) {
5446: return $guest;
5447: }
5448: } else {
5449: if (@domains > 0) {
5450: foreach my $domkey (@domains) {
5451: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5452: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5453: return 'ok';
5454: }
5455: }
5456: }
5457: }
5458: if (@users > 0) {
5459: foreach my $userkey (@users) {
5460: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5461: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5462: if (ref($item) eq 'HASH') {
5463: if (($item->{'uname'} eq $env{'user.name'}) &&
5464: ($item->{'udom'} eq $env{'user.domain'})) {
5465: return 'ok';
5466: }
5467: }
5468: }
5469: }
5470: }
5471: }
5472: my %roleshash;
5473: my @courses_and_groups = @courses;
5474: push(@courses_and_groups,@groups);
5475: if (@courses_and_groups > 0) {
5476: my (%allgroups,%allroles);
5477: my ($start,$end,$role,$sec,$group);
5478: foreach my $envkey (%env) {
5479: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5480: my $cid = $2.'_'.$3;
5481: if ($1 eq 'gr') {
5482: $group = $4;
5483: $allgroups{$cid}{$group} = $env{$envkey};
5484: } else {
5485: if ($4 eq '') {
5486: $sec = 'none';
5487: } else {
5488: $sec = $4;
5489: }
5490: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5491: }
5492: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5493: my $cid = $2.'_'.$3;
5494: if ($4 eq '') {
5495: $sec = 'none';
5496: } else {
5497: $sec = $4;
5498: }
5499: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5500: }
5501: }
5502: if (keys(%allroles) == 0) {
5503: return;
5504: }
5505: foreach my $key (@courses_and_groups) {
5506: my %content = %{$$access_hash{$key}};
5507: my $cnum = $content{'number'};
5508: my $cdom = $content{'domain'};
5509: my $cid = $cdom.'_'.$cnum;
5510: if (!exists($allroles{$cid})) {
5511: next;
5512: }
5513: foreach my $role_id (keys(%{$content{'roles'}})) {
5514: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5515: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5516: my @status = @{$content{'roles'}{$role_id}{'access'}};
5517: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5518: foreach my $role (keys(%{$allroles{$cid}})) {
5519: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5520: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5521: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5522: if (grep/^all$/,@sections) {
5523: return 'ok';
5524: } else {
5525: if (grep/^$sec$/,@sections) {
5526: return 'ok';
5527: }
5528: }
5529: }
5530: }
5531: if (keys(%{$allgroups{$cid}}) == 0) {
5532: if (grep/^none$/,@groups) {
5533: return 'ok';
5534: }
5535: } else {
5536: if (grep/^all$/,@groups) {
5537: return 'ok';
5538: }
5539: foreach my $group (keys(%{$allgroups{$cid}})) {
5540: if (grep/^$group$/,@groups) {
5541: return 'ok';
5542: }
5543: }
5544: }
5545: }
5546: }
5547: }
5548: }
5549: }
5550: if ($guest) {
5551: return $guest;
5552: }
5553: }
5554: }
5555: return;
5556: }
5557:
5558: sub course_group_datechecker {
5559: my ($dates,$now,$status) = @_;
5560: my ($start,$end) = split(/\./,$dates);
5561: if (!$start && !$end) {
5562: return 'ok';
5563: }
5564: if (grep/^active$/,@{$status}) {
5565: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5566: return 'ok';
5567: }
5568: }
5569: if (grep/^previous$/,@{$status}) {
5570: if ($end > $now ) {
5571: return 'ok';
5572: }
5573: }
5574: if (grep/^future$/,@{$status}) {
5575: if ($start > $now) {
5576: return 'ok';
5577: }
5578: }
5579: return;
5580: }
5581:
5582: sub parse_portfolio_url {
5583: my ($url) = @_;
5584:
5585: my ($type,$udom,$unum,$group,$file_name);
5586:
5587: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5588: $type = 1;
5589: $udom = $1;
5590: $unum = $2;
5591: $file_name = $3;
5592: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5593: $type = 2;
5594: $udom = $1;
5595: $unum = $2;
5596: $group = $3;
5597: $file_name = $3.'/'.$4;
5598: }
5599: if (wantarray) {
5600: return ($type,$udom,$unum,$file_name,$group);
5601: }
5602: return $type;
5603: }
5604:
5605: sub is_portfolio_url {
5606: my ($url) = @_;
5607: return scalar(&parse_portfolio_url($url));
5608: }
5609:
5610: sub is_portfolio_file {
5611: my ($file) = @_;
5612: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5613: return 1;
5614: }
5615: return;
5616: }
5617:
5618: sub usertools_access {
5619: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5620: my ($access,%tools);
5621: if ($context eq '') {
5622: $context = 'tools';
5623: }
5624: if ($context eq 'requestcourses') {
5625: %tools = (
5626: official => 1,
5627: unofficial => 1,
5628: community => 1,
5629: );
5630: } else {
5631: %tools = (
5632: aboutme => 1,
5633: blog => 1,
5634: portfolio => 1,
5635: );
5636: }
5637: return if (!defined($tools{$tool}));
5638:
5639: if ((!defined($udom)) || (!defined($uname))) {
5640: $udom = $env{'user.domain'};
5641: $uname = $env{'user.name'};
5642: }
5643:
5644: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5645: if ($action ne 'reload') {
5646: if ($context eq 'requestcourses') {
5647: return $env{'environment.canrequest.'.$tool};
5648: } else {
5649: return $env{'environment.availabletools.'.$tool};
5650: }
5651: }
5652: }
5653:
5654: my ($toolstatus,$inststatus);
5655:
5656: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5657: ($action ne 'reload')) {
5658: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5659: $inststatus = $env{'environment.inststatus'};
5660: } else {
5661: if (ref($userenvref) eq 'HASH') {
5662: $toolstatus = $userenvref->{$context.'.'.$tool};
5663: $inststatus = $userenvref->{'inststatus'};
5664: } else {
5665: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5666: $toolstatus = $userenv{$context.'.'.$tool};
5667: $inststatus = $userenv{'inststatus'};
5668: }
5669: }
5670:
5671: if ($toolstatus ne '') {
5672: if ($toolstatus) {
5673: $access = 1;
5674: } else {
5675: $access = 0;
5676: }
5677: return $access;
5678: }
5679:
5680: my ($is_adv,%domdef);
5681: if (ref($is_advref) eq 'HASH') {
5682: $is_adv = $is_advref->{'is_adv'};
5683: } else {
5684: $is_adv = &is_advanced_user($udom,$uname);
5685: }
5686: if (ref($domdefref) eq 'HASH') {
5687: %domdef = %{$domdefref};
5688: } else {
5689: %domdef = &get_domain_defaults($udom);
5690: }
5691: if (ref($domdef{$tool}) eq 'HASH') {
5692: if ($is_adv) {
5693: if ($domdef{$tool}{'_LC_adv'} ne '') {
5694: if ($domdef{$tool}{'_LC_adv'}) {
5695: $access = 1;
5696: } else {
5697: $access = 0;
5698: }
5699: return $access;
5700: }
5701: }
5702: if ($inststatus ne '') {
5703: my ($hasaccess,$hasnoaccess);
5704: foreach my $affiliation (split(/:/,$inststatus)) {
5705: if ($domdef{$tool}{$affiliation} ne '') {
5706: if ($domdef{$tool}{$affiliation}) {
5707: $hasaccess = 1;
5708: } else {
5709: $hasnoaccess = 1;
5710: }
5711: }
5712: }
5713: if ($hasaccess || $hasnoaccess) {
5714: if ($hasaccess) {
5715: $access = 1;
5716: } elsif ($hasnoaccess) {
5717: $access = 0;
5718: }
5719: return $access;
5720: }
5721: } else {
5722: if ($domdef{$tool}{'default'} ne '') {
5723: if ($domdef{$tool}{'default'}) {
5724: $access = 1;
5725: } elsif ($domdef{$tool}{'default'} == 0) {
5726: $access = 0;
5727: }
5728: return $access;
5729: }
5730: }
5731: } else {
5732: if ($context eq 'tools') {
5733: $access = 1;
5734: } else {
5735: $access = 0;
5736: }
5737: return $access;
5738: }
5739: }
5740:
5741: sub is_course_owner {
5742: my ($cdom,$cnum,$udom,$uname) = @_;
5743: if (($udom eq '') || ($uname eq '')) {
5744: $udom = $env{'user.domain'};
5745: $uname = $env{'user.name'};
5746: }
5747: unless (($udom eq '') || ($uname eq '')) {
5748: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5749: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5750: return 1;
5751: } else {
5752: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5753: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5754: return 1;
5755: }
5756: }
5757: }
5758: }
5759: return;
5760: }
5761:
5762: sub is_advanced_user {
5763: my ($udom,$uname) = @_;
5764: if ($udom ne '' && $uname ne '') {
5765: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5766: if (wantarray) {
5767: return ($env{'user.adv'},$env{'user.author'});
5768: } else {
5769: return $env{'user.adv'};
5770: }
5771: }
5772: }
5773: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5774: my %allroles;
5775: my ($is_adv,$is_author);
5776: foreach my $role (keys(%roleshash)) {
5777: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5778: my $area = '/'.$tdomain.'/'.$trest;
5779: if ($sec ne '') {
5780: $area .= '/'.$sec;
5781: }
5782: if (($area ne '') && ($trole ne '')) {
5783: my $spec=$trole.'.'.$area;
5784: if ($trole =~ /^cr\//) {
5785: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5786: } elsif ($trole ne 'gr') {
5787: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5788: }
5789: if ($trole eq 'au') {
5790: $is_author = 1;
5791: }
5792: }
5793: }
5794: foreach my $role (keys(%allroles)) {
5795: last if ($is_adv);
5796: foreach my $item (split(/:/,$allroles{$role})) {
5797: if ($item ne '') {
5798: my ($privilege,$restrictions)=split(/&/,$item);
5799: if ($privilege eq 'adv') {
5800: $is_adv = 1;
5801: last;
5802: }
5803: }
5804: }
5805: }
5806: if (wantarray) {
5807: return ($is_adv,$is_author);
5808: }
5809: return $is_adv;
5810: }
5811:
5812: sub check_can_request {
5813: my ($dom,$can_request,$request_domains) = @_;
5814: my $canreq = 0;
5815: my ($types,$typename) = &Apache::loncommon::course_types();
5816: my @options = ('approval','validate','autolimit');
5817: my $optregex = join('|',@options);
5818: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5819: foreach my $type (@{$types}) {
5820: if (&usertools_access($env{'user.name'},
5821: $env{'user.domain'},
5822: $type,undef,'requestcourses')) {
5823: $canreq ++;
5824: if (ref($request_domains) eq 'HASH') {
5825: push(@{$request_domains->{$type}},$env{'user.domain'});
5826: }
5827: if ($dom eq $env{'user.domain'}) {
5828: $can_request->{$type} = 1;
5829: }
5830: }
5831: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5832: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5833: if (@curr > 0) {
5834: foreach my $item (@curr) {
5835: if (ref($request_domains) eq 'HASH') {
5836: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5837: if ($otherdom ne '') {
5838: if (ref($request_domains->{$type}) eq 'ARRAY') {
5839: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5840: push(@{$request_domains->{$type}},$otherdom);
5841: }
5842: } else {
5843: push(@{$request_domains->{$type}},$otherdom);
5844: }
5845: }
5846: }
5847: }
5848: unless($dom eq $env{'user.domain'}) {
5849: $canreq ++;
5850: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5851: $can_request->{$type} = 1;
5852: }
5853: }
5854: }
5855: }
5856: }
5857: }
5858: return $canreq;
5859: }
5860:
5861: # ---------------------------------------------- Custom access rule evaluation
5862:
5863: sub customaccess {
5864: my ($priv,$uri)=@_;
5865: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5866: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5867: $udom = &LONCAPA::clean_domain($udom);
5868: $ucrs = &LONCAPA::clean_username($ucrs);
5869: my $access=0;
5870: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5871: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5872: if ($type eq 'user') {
5873: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5874: my ($tdom,$tuname)=split(m{/},$scope);
5875: if ($tdom) {
5876: if ($tdom ne $env{'user.domain'}) { next; }
5877: }
5878: if ($tuname) {
5879: if ($tuname ne $env{'user.name'}) { next; }
5880: }
5881: $access=($effect eq 'allow');
5882: last;
5883: }
5884: } else {
5885: if ($role) {
5886: if ($role ne $urole) { next; }
5887: }
5888: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5889: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5890: if ($tdom) {
5891: if ($tdom ne $udom) { next; }
5892: }
5893: if ($tcrs) {
5894: if ($tcrs ne $ucrs) { next; }
5895: }
5896: if ($tsec) {
5897: if ($tsec ne $usec) { next; }
5898: }
5899: $access=($effect eq 'allow');
5900: last;
5901: }
5902: if ($realm eq '' && $role eq '') {
5903: $access=($effect eq 'allow');
5904: }
5905: }
5906: }
5907: return $access;
5908: }
5909:
5910: # ------------------------------------------------- Check for a user privilege
5911:
5912: sub allowed {
5913: my ($priv,$uri,$symb,$role)=@_;
5914: my $ver_orguri=$uri;
5915: $uri=&deversion($uri);
5916: my $orguri=$uri;
5917: $uri=&declutter($uri);
5918:
5919: if ($priv eq 'evb') {
5920: # Evade communication block restrictions for specified role in a course
5921: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5922: return $1;
5923: } else {
5924: return;
5925: }
5926: }
5927:
5928: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5929: # Free bre access to adm and meta resources
5930: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5931: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5932: && ($priv eq 'bre')) {
5933: return 'F';
5934: }
5935:
5936: # Free bre access to user's own portfolio contents
5937: my ($space,$domain,$name,@dir)=split('/',$uri);
5938: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5939: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5940: my %setters;
5941: my ($startblock,$endblock) =
5942: &Apache::loncommon::blockcheck(\%setters,'port');
5943: if ($startblock && $endblock) {
5944: return 'B';
5945: } else {
5946: return 'F';
5947: }
5948: }
5949:
5950: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5951: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5952: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5953: if (exists($env{'request.course.id'})) {
5954: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5955: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5956: if (($domain eq $cdom) && ($name eq $cnum)) {
5957: my $courseprivid=$env{'request.course.id'};
5958: $courseprivid=~s/\_/\//;
5959: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5960: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5961: return $1;
5962: } else {
5963: if ($env{'request.course.sec'}) {
5964: $courseprivid.='/'.$env{'request.course.sec'};
5965: }
5966: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5967: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5968: return $2;
5969: }
5970: }
5971: }
5972: }
5973: }
5974:
5975: # Free bre to public access
5976:
5977: if ($priv eq 'bre') {
5978: my $copyright=&metadata($uri,'copyright');
5979: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5980: return 'F';
5981: }
5982: if ($copyright eq 'priv') {
5983: $uri=~/([^\/]+)\/([^\/]+)\//;
5984: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5985: return '';
5986: }
5987: }
5988: if ($copyright eq 'domain') {
5989: $uri=~/([^\/]+)\/([^\/]+)\//;
5990: unless (($env{'user.domain'} eq $1) ||
5991: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5992: return '';
5993: }
5994: }
5995: if ($env{'request.role'}=~ /li\.\//) {
5996: # Library role, so allow browsing of resources in this domain.
5997: return 'F';
5998: }
5999: if ($copyright eq 'custom') {
6000: unless (&customaccess($priv,$uri)) { return ''; }
6001: }
6002: }
6003: # Domain coordinator is trying to create a course
6004: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6005: # uri is the requested domain in this case.
6006: # comparison to 'request.role.domain' shows if the user has selected
6007: # a role of dc for the domain in question.
6008: return 'F' if ($uri eq $env{'request.role.domain'});
6009: }
6010:
6011: my $thisallowed='';
6012: my $statecond=0;
6013: my $courseprivid='';
6014:
6015: my $ownaccess;
6016: # Community Coordinator or Assistant Co-author browsing resource space.
6017: if (($priv eq 'bro') && ($env{'user.author'})) {
6018: if ($uri eq '') {
6019: $ownaccess = 1;
6020: } else {
6021: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6022: my $udom = $env{'user.domain'};
6023: my $uname = $env{'user.name'};
6024: if ($uri =~ m{^\Q$udom\E/?$}) {
6025: $ownaccess = 1;
6026: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6027: unless ($uri =~ m{\.\./}) {
6028: $ownaccess = 1;
6029: }
6030: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6031: my $now = time;
6032: if ($uri =~ m{^([^/]+)/?$}) {
6033: my $adom = $1;
6034: foreach my $key (keys(%env)) {
6035: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6036: my ($start,$end) = split('.',$env{$key});
6037: if (($now >= $start) && (!$end || $end < $now)) {
6038: $ownaccess = 1;
6039: last;
6040: }
6041: }
6042: }
6043: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6044: my $adom = $1;
6045: my $aname = $2;
6046: foreach my $role ('ca','aa') {
6047: if ($env{"user.role.$role./$adom/$aname"}) {
6048: my ($start,$end) =
6049: split('.',$env{"user.role.$role./$adom/$aname"});
6050: if (($now >= $start) && (!$end || $end < $now)) {
6051: $ownaccess = 1;
6052: last;
6053: }
6054: }
6055: }
6056: }
6057: }
6058: }
6059: }
6060: }
6061:
6062: # Course
6063:
6064: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6065: unless (($priv eq 'bro') && (!$ownaccess)) {
6066: $thisallowed.=$1;
6067: }
6068: }
6069:
6070: # Domain
6071:
6072: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6073: =~/\Q$priv\E\&([^\:]*)/) {
6074: unless (($priv eq 'bro') && (!$ownaccess)) {
6075: $thisallowed.=$1;
6076: }
6077: }
6078:
6079: # User who is not author or co-author might still be able to edit
6080: # resource of an author in the domain (e.g., if Domain Coordinator).
6081: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6082: (&allowed('mdc',$env{'request.course.id'}))) {
6083: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6084: $thisallowed.=$1;
6085: }
6086: }
6087:
6088: # Course: uri itself is a course
6089: my $courseuri=$uri;
6090: $courseuri=~s/\_(\d)/\/$1/;
6091: $courseuri=~s/^([^\/])/\/$1/;
6092:
6093: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6094: =~/\Q$priv\E\&([^\:]*)/) {
6095: unless (($priv eq 'bro') && (!$ownaccess)) {
6096: $thisallowed.=$1;
6097: }
6098: }
6099:
6100: # URI is an uploaded document for this course, default permissions don't matter
6101: # not allowing 'edit' access (editupload) to uploaded course docs
6102: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6103: $thisallowed='';
6104: my ($match)=&is_on_map($uri);
6105: if ($match) {
6106: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6107: =~/\Q$priv\E\&([^\:]*)/) {
6108: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6109: if (@blockers > 0) {
6110: $thisallowed = 'B';
6111: } else {
6112: $thisallowed.=$1;
6113: }
6114: }
6115: } else {
6116: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6117: if ($refuri) {
6118: if ($refuri =~ m|^/adm/|) {
6119: $thisallowed='F';
6120: } else {
6121: $refuri=&declutter($refuri);
6122: my ($match) = &is_on_map($refuri);
6123: if ($match) {
6124: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6125: if (@blockers > 0) {
6126: $thisallowed = 'B';
6127: } else {
6128: $thisallowed='F';
6129: }
6130: }
6131: }
6132: }
6133: }
6134: }
6135:
6136: if ($priv eq 'bre'
6137: && $thisallowed ne 'F'
6138: && $thisallowed ne '2'
6139: && &is_portfolio_url($uri)) {
6140: $thisallowed = &portfolio_access($uri);
6141: }
6142:
6143: # Full access at system, domain or course-wide level? Exit.
6144: if ($thisallowed=~/F/) {
6145: return 'F';
6146: }
6147:
6148: # If this is generating or modifying users, exit with special codes
6149:
6150: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6151: if (($priv eq 'cca') || ($priv eq 'caa')) {
6152: my ($audom,$auname)=split('/',$uri);
6153: # no author name given, so this just checks on the general right to make a co-author in this domain
6154: unless ($auname) { return $thisallowed; }
6155: # an author name is given, so we are about to actually make a co-author for a certain account
6156: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6157: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6158: ($audom ne $env{'request.role.domain'}))) { return ''; }
6159: }
6160: return $thisallowed;
6161: }
6162: #
6163: # Gathered so far: system, domain and course wide privileges
6164: #
6165: # Course: See if uri or referer is an individual resource that is part of
6166: # the course
6167:
6168: if ($env{'request.course.id'}) {
6169:
6170: $courseprivid=$env{'request.course.id'};
6171: if ($env{'request.course.sec'}) {
6172: $courseprivid.='/'.$env{'request.course.sec'};
6173: }
6174: $courseprivid=~s/\_/\//;
6175: my $checkreferer=1;
6176: my ($match,$cond)=&is_on_map($uri);
6177: if ($match) {
6178: $statecond=$cond;
6179: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6180: =~/\Q$priv\E\&([^\:]*)/) {
6181: my $value = $1;
6182: if ($priv eq 'bre') {
6183: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6184: if (@blockers > 0) {
6185: $thisallowed = 'B';
6186: } else {
6187: $thisallowed.=$value;
6188: }
6189: } else {
6190: $thisallowed.=$value;
6191: }
6192: $checkreferer=0;
6193: }
6194: }
6195:
6196: if ($checkreferer) {
6197: my $refuri=$env{'httpref.'.$orguri};
6198: unless ($refuri) {
6199: foreach my $key (keys(%env)) {
6200: if ($key=~/^httpref\..*\*/) {
6201: my $pattern=$key;
6202: $pattern=~s/^httpref\.\/res\///;
6203: $pattern=~s/\*/\[\^\/\]\+/g;
6204: $pattern=~s/\//\\\//g;
6205: if ($orguri=~/$pattern/) {
6206: $refuri=$env{$key};
6207: }
6208: }
6209: }
6210: }
6211:
6212: if ($refuri) {
6213: $refuri=&declutter($refuri);
6214: my ($match,$cond)=&is_on_map($refuri);
6215: if ($match) {
6216: my $refstatecond=$cond;
6217: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6218: =~/\Q$priv\E\&([^\:]*)/) {
6219: my $value = $1;
6220: if ($priv eq 'bre') {
6221: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6222: if (@blockers > 0) {
6223: $thisallowed = 'B';
6224: } else {
6225: $thisallowed.=$value;
6226: }
6227: } else {
6228: $thisallowed.=$value;
6229: }
6230: $uri=$refuri;
6231: $statecond=$refstatecond;
6232: }
6233: }
6234: }
6235: }
6236: }
6237:
6238: #
6239: # Gathered now: all privileges that could apply, and condition number
6240: #
6241: #
6242: # Full or no access?
6243: #
6244:
6245: if ($thisallowed=~/F/) {
6246: return 'F';
6247: }
6248:
6249: unless ($thisallowed) {
6250: return '';
6251: }
6252:
6253: # Restrictions exist, deal with them
6254: #
6255: # C:according to course preferences
6256: # R:according to resource settings
6257: # L:unless locked
6258: # X:according to user session state
6259: #
6260:
6261: # Possibly locked functionality, check all courses
6262: # Locks might take effect only after 10 minutes cache expiration for other
6263: # courses, and 2 minutes for current course
6264:
6265: my $envkey;
6266: if ($thisallowed=~/L/) {
6267: foreach $envkey (keys(%env)) {
6268: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6269: my $courseid=$2;
6270: my $roleid=$1.'.'.$2;
6271: $courseid=~s/^\///;
6272: my $expiretime=600;
6273: if ($env{'request.role'} eq $roleid) {
6274: $expiretime=120;
6275: }
6276: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6277: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6278: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6279: &coursedescription($courseid,{'freshen_cache' => 1});
6280: }
6281: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6282: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6283: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6284: &log($env{'user.domain'},$env{'user.name'},
6285: $env{'user.home'},
6286: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6287: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6288: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6289: return '';
6290: }
6291: }
6292: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6293: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6294: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6295: &log($env{'user.domain'},$env{'user.name'},
6296: $env{'user.home'},
6297: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6298: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6299: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6300: return '';
6301: }
6302: }
6303: }
6304: }
6305: }
6306:
6307: #
6308: # Rest of the restrictions depend on selected course
6309: #
6310:
6311: unless ($env{'request.course.id'}) {
6312: if ($thisallowed eq 'A') {
6313: return 'A';
6314: } elsif ($thisallowed eq 'B') {
6315: return 'B';
6316: } else {
6317: return '1';
6318: }
6319: }
6320:
6321: #
6322: # Now user is definitely in a course
6323: #
6324:
6325:
6326: # Course preferences
6327:
6328: if ($thisallowed=~/C/) {
6329: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6330: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6331: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6332: =~/\Q$rolecode\E/) {
6333: if (($priv ne 'pch') && ($priv ne 'plc')) {
6334: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6335: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6336: $env{'request.course.id'});
6337: }
6338: return '';
6339: }
6340:
6341: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6342: =~/\Q$unamedom\E/) {
6343: if (($priv ne 'pch') && ($priv ne 'plc')) {
6344: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6345: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6346: $env{'request.course.id'});
6347: }
6348: return '';
6349: }
6350: }
6351:
6352: # Resource preferences
6353:
6354: if ($thisallowed=~/R/) {
6355: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6356: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6357: if (($priv ne 'pch') && ($priv ne 'plc')) {
6358: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6359: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6360: }
6361: return '';
6362: }
6363: }
6364:
6365: # Restricted by state or randomout?
6366:
6367: if ($thisallowed=~/X/) {
6368: if ($env{'acc.randomout'}) {
6369: if (!$symb) { $symb=&symbread($uri,1); }
6370: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6371: return '';
6372: }
6373: }
6374: if (&condval($statecond)) {
6375: return '2';
6376: } else {
6377: return '';
6378: }
6379: }
6380:
6381: if ($thisallowed eq 'A') {
6382: return 'A';
6383: } elsif ($thisallowed eq 'B') {
6384: return 'B';
6385: }
6386: return 'F';
6387: }
6388:
6389: sub get_comm_blocks {
6390: my ($cdom,$cnum) = @_;
6391: if ($cdom eq '' || $cnum eq '') {
6392: return unless ($env{'request.course.id'});
6393: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6394: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6395: }
6396: my %commblocks;
6397: my $hashid=$cdom.'_'.$cnum;
6398: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6399: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6400: %commblocks = %{$blocksref};
6401: } else {
6402: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6403: my $cachetime = 600;
6404: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6405: }
6406: return %commblocks;
6407: }
6408:
6409: sub has_comm_blocking {
6410: my ($priv,$symb,$uri,$blocks) = @_;
6411: return unless ($env{'request.course.id'});
6412: return unless ($priv eq 'bre');
6413: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6414: my %commblocks;
6415: if (ref($blocks) eq 'HASH') {
6416: %commblocks = %{$blocks};
6417: } else {
6418: %commblocks = &get_comm_blocks();
6419: }
6420: return unless (keys(%commblocks) > 0);
6421: if (!$symb) { $symb=&symbread($uri,1); }
6422: my ($map,$resid,undef)=&decode_symb($symb);
6423: my %tocheck = (
6424: maps => $map,
6425: resources => $symb,
6426: );
6427: my @blockers;
6428: my $now = time;
6429: my $navmap = Apache::lonnavmaps::navmap->new();
6430: foreach my $block (keys(%commblocks)) {
6431: if ($block =~ /^(\d+)____(\d+)$/) {
6432: my ($start,$end) = ($1,$2);
6433: if ($start <= $now && $end >= $now) {
6434: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6435: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6436: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6437: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6438: unless (grep(/^\Q$block\E$/,@blockers)) {
6439: push(@blockers,$block);
6440: }
6441: }
6442: }
6443: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6444: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6445: unless (grep(/^\Q$block\E$/,@blockers)) {
6446: push(@blockers,$block);
6447: }
6448: }
6449: }
6450: }
6451: }
6452: }
6453: } elsif ($block =~ /^firstaccess____(.+)$/) {
6454: my $item = $1;
6455: my @to_test;
6456: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6457: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6458: my $check_interval;
6459: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6460: my @interval;
6461: my $type = 'map';
6462: if ($item eq 'course') {
6463: $type = 'course';
6464: @interval=&EXT("resource.0.interval");
6465: } else {
6466: if ($item =~ /___\d+___/) {
6467: $type = 'resource';
6468: @interval=&EXT("resource.0.interval",$item);
6469: if (ref($navmap)) {
6470: my $res = $navmap->getBySymb($item);
6471: push(@to_test,$res);
6472: }
6473: } else {
6474: my $mapsymb = &symbread($item,1);
6475: if ($mapsymb) {
6476: if (ref($navmap)) {
6477: my $mapres = $navmap->getBySymb($mapsymb);
6478: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6479: foreach my $res (@to_test) {
6480: my $symb = $res->symb();
6481: next if ($symb eq $mapsymb);
6482: if ($symb ne '') {
6483: @interval=&EXT("resource.0.interval",$symb);
6484: last;
6485: }
6486: }
6487: }
6488: }
6489: }
6490: }
6491: if ($interval[0] =~ /\d+/) {
6492: my $first_access;
6493: if ($type eq 'resource') {
6494: $first_access=&get_first_access($interval[1],$item);
6495: } elsif ($type eq 'map') {
6496: $first_access=&get_first_access($interval[1],undef,$item);
6497: } else {
6498: $first_access=&get_first_access($interval[1]);
6499: }
6500: if ($first_access) {
6501: my $timesup = $first_access+$interval[0];
6502: if ($timesup > $now) {
6503: foreach my $res (@to_test) {
6504: if ($res->is_problem()) {
6505: if ($res->completable()) {
6506: unless (grep(/^\Q$block\E$/,@blockers)) {
6507: push(@blockers,$block);
6508: }
6509: last;
6510: }
6511: }
6512: }
6513: }
6514: }
6515: }
6516: }
6517: }
6518: }
6519: }
6520: }
6521: return @blockers;
6522: }
6523:
6524: sub check_docs_block {
6525: my ($docsblock,$tocheck) =@_;
6526: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6527: return;
6528: }
6529: if (ref($docsblock->{'maps'}) eq 'HASH') {
6530: if ($tocheck->{'maps'}) {
6531: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6532: return 1;
6533: }
6534: }
6535: }
6536: if (ref($docsblock->{'resources'}) eq 'HASH') {
6537: if ($tocheck->{'resources'}) {
6538: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6539: return 1;
6540: }
6541: }
6542: }
6543: return;
6544: }
6545:
6546: #
6547: # Removes the versino from a URI and
6548: # splits it in to its filename and path to the filename.
6549: # Seems like File::Basename could have done this more clearly.
6550: # Parameters:
6551: # $uri - input URI
6552: # Returns:
6553: # Two element list consisting of
6554: # $pathname - the URI up to and excluding the trailing /
6555: # $filename - The part of the URI following the last /
6556: # NOTE:
6557: # Another realization of this is simply:
6558: # use File::Basename;
6559: # ...
6560: # $uri = shift;
6561: # $filename = basename($uri);
6562: # $path = dirname($uri);
6563: # return ($filename, $path);
6564: #
6565: # The implementation below is probably faster however.
6566: #
6567: sub split_uri_for_cond {
6568: my $uri=&deversion(&declutter(shift));
6569: my @uriparts=split(/\//,$uri);
6570: my $filename=pop(@uriparts);
6571: my $pathname=join('/',@uriparts);
6572: return ($pathname,$filename);
6573: }
6574: # --------------------------------------------------- Is a resource on the map?
6575:
6576: sub is_on_map {
6577: my ($pathname,$filename) = &split_uri_for_cond(shift);
6578: #Trying to find the conditional for the file
6579: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6580: /\&\Q$filename\E\:([\d\|]+)\&/);
6581: if ($match) {
6582: return (1,$1);
6583: } else {
6584: return (0,0);
6585: }
6586: }
6587:
6588: # --------------------------------------------------------- Get symb from alias
6589:
6590: sub get_symb_from_alias {
6591: my $symb=shift;
6592: my ($map,$resid,$url)=&decode_symb($symb);
6593: # Already is a symb
6594: if ($url) { return $symb; }
6595: # Must be an alias
6596: my $aliassymb='';
6597: my %bighash;
6598: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6599: &GDBM_READER(),0640)) {
6600: my $rid=$bighash{'mapalias_'.$symb};
6601: if ($rid) {
6602: my ($mapid,$resid)=split(/\./,$rid);
6603: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6604: $resid,$bighash{'src_'.$rid});
6605: }
6606: untie %bighash;
6607: }
6608: return $aliassymb;
6609: }
6610:
6611: # ----------------------------------------------------------------- Define Role
6612:
6613: sub definerole {
6614: if (allowed('mcr','/')) {
6615: my ($rolename,$sysrole,$domrole,$courole)=@_;
6616: foreach my $role (split(':',$sysrole)) {
6617: my ($crole,$cqual)=split(/\&/,$role);
6618: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6619: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6620: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6621: return "refused:s:$crole&$cqual";
6622: }
6623: }
6624: }
6625: foreach my $role (split(':',$domrole)) {
6626: my ($crole,$cqual)=split(/\&/,$role);
6627: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6628: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6629: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6630: return "refused:d:$crole&$cqual";
6631: }
6632: }
6633: }
6634: foreach my $role (split(':',$courole)) {
6635: my ($crole,$cqual)=split(/\&/,$role);
6636: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6637: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6638: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6639: return "refused:c:$crole&$cqual";
6640: }
6641: }
6642: }
6643: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6644: "$env{'user.domain'}:$env{'user.name'}:".
6645: "rolesdef_$rolename=".
6646: escape($sysrole.'_'.$domrole.'_'.$courole);
6647: return reply($command,$env{'user.home'});
6648: } else {
6649: return 'refused';
6650: }
6651: }
6652:
6653: # ---------------- Make a metadata query against the network of library servers
6654:
6655: sub metadata_query {
6656: my ($query,$custom,$customshow,$server_array)=@_;
6657: my %rhash;
6658: my %libserv = &all_library();
6659: my @server_list = (defined($server_array) ? @$server_array
6660: : keys(%libserv) );
6661: for my $server (@server_list) {
6662: unless ($custom or $customshow) {
6663: my $reply=&reply("querysend:".&escape($query),$server);
6664: $rhash{$server}=$reply;
6665: }
6666: else {
6667: my $reply=&reply("querysend:".&escape($query).':'.
6668: &escape($custom).':'.&escape($customshow),
6669: $server);
6670: $rhash{$server}=$reply;
6671: }
6672: }
6673: return \%rhash;
6674: }
6675:
6676: # ----------------------------------------- Send log queries and wait for reply
6677:
6678: sub log_query {
6679: my ($uname,$udom,$query,%filters)=@_;
6680: my $uhome=&homeserver($uname,$udom);
6681: if ($uhome eq 'no_host') { return 'error: no_host'; }
6682: my $uhost=&hostname($uhome);
6683: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6684: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6685: $uhome);
6686: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6687: return get_query_reply($queryid);
6688: }
6689:
6690: # -------------------------- Update MySQL table for portfolio file
6691:
6692: sub update_portfolio_table {
6693: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6694: if ($group ne '') {
6695: $file_name =~s /^\Q$group\E//;
6696: }
6697: my $homeserver = &homeserver($uname,$udom);
6698: my $queryid=
6699: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6700: ':'.&escape($file_name).':'.$action,$homeserver);
6701: my $reply = &get_query_reply($queryid);
6702: return $reply;
6703: }
6704:
6705: # -------------------------- Update MySQL allusers table
6706:
6707: sub update_allusers_table {
6708: my ($uname,$udom,$names) = @_;
6709: my $homeserver = &homeserver($uname,$udom);
6710: my $queryid=
6711: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6712: 'lastname='.&escape($names->{'lastname'}).'%%'.
6713: 'firstname='.&escape($names->{'firstname'}).'%%'.
6714: 'middlename='.&escape($names->{'middlename'}).'%%'.
6715: 'generation='.&escape($names->{'generation'}).'%%'.
6716: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6717: 'id='.&escape($names->{'id'}),$homeserver);
6718: return;
6719: }
6720:
6721: # ------- Request retrieval of institutional classlists for course(s)
6722:
6723: sub fetch_enrollment_query {
6724: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6725: my $homeserver;
6726: my $maxtries = 1;
6727: if ($context eq 'automated') {
6728: $homeserver = $perlvar{'lonHostID'};
6729: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6730: } else {
6731: $homeserver = &homeserver($cnum,$dom);
6732: }
6733: my $host=&hostname($homeserver);
6734: my $cmd = '';
6735: foreach my $affiliate (keys(%{$affiliatesref})) {
6736: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6737: }
6738: $cmd =~ s/%%$//;
6739: $cmd = &escape($cmd);
6740: my $query = 'fetchenrollment';
6741: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6742: unless ($queryid=~/^\Q$host\E\_/) {
6743: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6744: return 'error: '.$queryid;
6745: }
6746: my $reply = &get_query_reply($queryid);
6747: my $tries = 1;
6748: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6749: $reply = &get_query_reply($queryid);
6750: $tries ++;
6751: }
6752: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6753: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6754: } else {
6755: my @responses = split(/:/,$reply);
6756: if ($homeserver eq $perlvar{'lonHostID'}) {
6757: foreach my $line (@responses) {
6758: my ($key,$value) = split(/=/,$line,2);
6759: $$replyref{$key} = $value;
6760: }
6761: } else {
6762: my $pathname = LONCAPA::tempdir();
6763: foreach my $line (@responses) {
6764: my ($key,$value) = split(/=/,$line);
6765: $$replyref{$key} = $value;
6766: if ($value > 0) {
6767: foreach my $item (@{$$affiliatesref{$key}}) {
6768: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6769: my $destname = $pathname.'/'.$filename;
6770: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6771: if ($xml_classlist =~ /^error/) {
6772: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6773: } else {
6774: if ( open(FILE,">$destname") ) {
6775: print FILE &unescape($xml_classlist);
6776: close(FILE);
6777: } else {
6778: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6779: }
6780: }
6781: }
6782: }
6783: }
6784: }
6785: return 'ok';
6786: }
6787: return 'error';
6788: }
6789:
6790: sub get_query_reply {
6791: my $queryid=shift;
6792: my $replyfile=LONCAPA::tempdir().$queryid;
6793: my $reply='';
6794: for (1..100) {
6795: sleep 2;
6796: if (-e $replyfile.'.end') {
6797: if (open(my $fh,$replyfile)) {
6798: $reply = join('',<$fh>);
6799: close($fh);
6800: } else { return 'error: reply_file_error'; }
6801: return &unescape($reply);
6802: }
6803: }
6804: return 'timeout:'.$queryid;
6805: }
6806:
6807: sub courselog_query {
6808: #
6809: # possible filters:
6810: # url: url or symb
6811: # username
6812: # domain
6813: # action: view, submit, grade
6814: # start: timestamp
6815: # end: timestamp
6816: #
6817: my (%filters)=@_;
6818: unless ($env{'request.course.id'}) { return 'no_course'; }
6819: if ($filters{'url'}) {
6820: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6821: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6822: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6823: }
6824: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6825: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6826: return &log_query($cname,$cdom,'courselog',%filters);
6827: }
6828:
6829: sub userlog_query {
6830: #
6831: # possible filters:
6832: # action: log check role
6833: # start: timestamp
6834: # end: timestamp
6835: #
6836: my ($uname,$udom,%filters)=@_;
6837: return &log_query($uname,$udom,'userlog',%filters);
6838: }
6839:
6840: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6841:
6842: sub auto_run {
6843: my ($cnum,$cdom) = @_;
6844: my $response = 0;
6845: my $settings;
6846: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6847: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6848: $settings = $domconfig{'autoenroll'};
6849: if ($settings->{'run'} eq '1') {
6850: $response = 1;
6851: }
6852: } else {
6853: my $homeserver;
6854: if (&is_course($cdom,$cnum)) {
6855: $homeserver = &homeserver($cnum,$cdom);
6856: } else {
6857: $homeserver = &domain($cdom,'primary');
6858: }
6859: if ($homeserver ne 'no_host') {
6860: $response = &reply('autorun:'.$cdom,$homeserver);
6861: }
6862: }
6863: return $response;
6864: }
6865:
6866: sub auto_get_sections {
6867: my ($cnum,$cdom,$inst_coursecode) = @_;
6868: my $homeserver;
6869: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6870: $homeserver = &homeserver($cnum,$cdom);
6871: }
6872: if (!defined($homeserver)) {
6873: if ($cdom =~ /^$match_domain$/) {
6874: $homeserver = &domain($cdom,'primary');
6875: }
6876: }
6877: my @secs;
6878: if (defined($homeserver)) {
6879: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6880: unless ($response eq 'refused') {
6881: @secs = split(/:/,$response);
6882: }
6883: }
6884: return @secs;
6885: }
6886:
6887: sub auto_new_course {
6888: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6889: my $homeserver = &homeserver($cnum,$cdom);
6890: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6891: return $response;
6892: }
6893:
6894: sub auto_validate_courseID {
6895: my ($cnum,$cdom,$inst_course_id) = @_;
6896: my $homeserver = &homeserver($cnum,$cdom);
6897: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6898: return $response;
6899: }
6900:
6901: sub auto_validate_instcode {
6902: my ($cnum,$cdom,$instcode,$owner) = @_;
6903: my ($homeserver,$response);
6904: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6905: $homeserver = &homeserver($cnum,$cdom);
6906: }
6907: if (!defined($homeserver)) {
6908: if ($cdom =~ /^$match_domain$/) {
6909: $homeserver = &domain($cdom,'primary');
6910: }
6911: }
6912: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6913: &escape($instcode).':'.&escape($owner),$homeserver));
6914: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6915: return ($outcome,$description);
6916: }
6917:
6918: sub auto_create_password {
6919: my ($cnum,$cdom,$authparam,$udom) = @_;
6920: my ($homeserver,$response);
6921: my $create_passwd = 0;
6922: my $authchk = '';
6923: if ($udom =~ /^$match_domain$/) {
6924: $homeserver = &domain($udom,'primary');
6925: }
6926: if ($homeserver eq '') {
6927: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6928: $homeserver = &homeserver($cnum,$cdom);
6929: }
6930: }
6931: if ($homeserver eq '') {
6932: $authchk = 'nodomain';
6933: } else {
6934: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6935: if ($response eq 'refused') {
6936: $authchk = 'refused';
6937: } else {
6938: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6939: }
6940: }
6941: return ($authparam,$create_passwd,$authchk);
6942: }
6943:
6944: sub auto_photo_permission {
6945: my ($cnum,$cdom,$students) = @_;
6946: my $homeserver = &homeserver($cnum,$cdom);
6947: my ($outcome,$perm_reqd,$conditions) =
6948: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6949: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6950: return (undef,undef);
6951: }
6952: return ($outcome,$perm_reqd,$conditions);
6953: }
6954:
6955: sub auto_checkphotos {
6956: my ($uname,$udom,$pid) = @_;
6957: my $homeserver = &homeserver($uname,$udom);
6958: my ($result,$resulttype);
6959: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6960: &escape($uname).':'.&escape($pid),
6961: $homeserver));
6962: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6963: return (undef,undef);
6964: }
6965: if ($outcome) {
6966: ($result,$resulttype) = split(/:/,$outcome);
6967: }
6968: return ($result,$resulttype);
6969: }
6970:
6971: sub auto_photochoice {
6972: my ($cnum,$cdom) = @_;
6973: my $homeserver = &homeserver($cnum,$cdom);
6974: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6975: &escape($cdom),
6976: $homeserver)));
6977: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6978: return (undef,undef);
6979: }
6980: return ($update,$comment);
6981: }
6982:
6983: sub auto_photoupdate {
6984: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6985: my $homeserver = &homeserver($cnum,$dom);
6986: my $host=&hostname($homeserver);
6987: my $cmd = '';
6988: my $maxtries = 1;
6989: foreach my $affiliate (keys(%{$affiliatesref})) {
6990: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6991: }
6992: $cmd =~ s/%%$//;
6993: $cmd = &escape($cmd);
6994: my $query = 'institutionalphotos';
6995: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6996: unless ($queryid=~/^\Q$host\E\_/) {
6997: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6998: return 'error: '.$queryid;
6999: }
7000: my $reply = &get_query_reply($queryid);
7001: my $tries = 1;
7002: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7003: $reply = &get_query_reply($queryid);
7004: $tries ++;
7005: }
7006: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7007: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7008: } else {
7009: my @responses = split(/:/,$reply);
7010: my $outcome = shift(@responses);
7011: foreach my $item (@responses) {
7012: my ($key,$value) = split(/=/,$item);
7013: $$photo{$key} = $value;
7014: }
7015: return $outcome;
7016: }
7017: return 'error';
7018: }
7019:
7020: sub auto_instcode_format {
7021: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7022: $cat_order) = @_;
7023: my $courses = '';
7024: my @homeservers;
7025: if ($caller eq 'global') {
7026: my %servers = &get_servers($codedom,'library');
7027: foreach my $tryserver (keys(%servers)) {
7028: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7029: push(@homeservers,$tryserver);
7030: }
7031: }
7032: } elsif ($caller eq 'requests') {
7033: if ($codedom =~ /^$match_domain$/) {
7034: my $chome = &domain($codedom,'primary');
7035: unless ($chome eq 'no_host') {
7036: push(@homeservers,$chome);
7037: }
7038: }
7039: } else {
7040: push(@homeservers,&homeserver($caller,$codedom));
7041: }
7042: foreach my $code (keys(%{$instcodes})) {
7043: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7044: }
7045: chop($courses);
7046: my $ok_response = 0;
7047: my $response;
7048: while (@homeservers > 0 && $ok_response == 0) {
7049: my $server = shift(@homeservers);
7050: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7051: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7052: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7053: split(/:/,$response);
7054: %{$codes} = (%{$codes},&str2hash($codes_str));
7055: push(@{$codetitles},&str2array($codetitles_str));
7056: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7057: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7058: $ok_response = 1;
7059: }
7060: }
7061: if ($ok_response) {
7062: return 'ok';
7063: } else {
7064: return $response;
7065: }
7066: }
7067:
7068: sub auto_instcode_defaults {
7069: my ($domain,$returnhash,$code_order) = @_;
7070: my @homeservers;
7071:
7072: my %servers = &get_servers($domain,'library');
7073: foreach my $tryserver (keys(%servers)) {
7074: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7075: push(@homeservers,$tryserver);
7076: }
7077: }
7078:
7079: my $response;
7080: foreach my $server (@homeservers) {
7081: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7082: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7083:
7084: foreach my $pair (split(/\&/,$response)) {
7085: my ($name,$value)=split(/\=/,$pair);
7086: if ($name eq 'code_order') {
7087: @{$code_order} = split(/\&/,&unescape($value));
7088: } else {
7089: $returnhash->{&unescape($name)}=&unescape($value);
7090: }
7091: }
7092: return 'ok';
7093: }
7094:
7095: return $response;
7096: }
7097:
7098: sub auto_possible_instcodes {
7099: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7100: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7101: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7102: return;
7103: }
7104: my (@homeservers,$uhome);
7105: if (defined(&domain($domain,'primary'))) {
7106: $uhome=&domain($domain,'primary');
7107: push(@homeservers,&domain($domain,'primary'));
7108: } else {
7109: my %servers = &get_servers($domain,'library');
7110: foreach my $tryserver (keys(%servers)) {
7111: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7112: push(@homeservers,$tryserver);
7113: }
7114: }
7115: }
7116: my $response;
7117: foreach my $server (@homeservers) {
7118: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7119: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7120: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7121: split(':',$response);
7122: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7123: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7124: foreach my $item (split('&',$cat_title)) {
7125: my ($name,$value)=split('=',$item);
7126: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7127: }
7128: foreach my $item (split('&',$cat_order)) {
7129: my ($name,$value)=split('=',$item);
7130: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7131: }
7132: return 'ok';
7133: }
7134: return $response;
7135: }
7136:
7137: sub auto_courserequest_checks {
7138: my ($dom) = @_;
7139: my ($homeserver,%validations);
7140: if ($dom =~ /^$match_domain$/) {
7141: $homeserver = &domain($dom,'primary');
7142: }
7143: unless ($homeserver eq 'no_host') {
7144: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7145: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7146: my @items = split(/&/,$response);
7147: foreach my $item (@items) {
7148: my ($key,$value) = split('=',$item);
7149: $validations{&unescape($key)} = &thaw_unescape($value);
7150: }
7151: }
7152: }
7153: return %validations;
7154: }
7155:
7156: sub auto_courserequest_validation {
7157: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7158: my ($homeserver,$response);
7159: if ($dom =~ /^$match_domain$/) {
7160: $homeserver = &domain($dom,'primary');
7161: }
7162: unless ($homeserver eq 'no_host') {
7163:
7164: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7165: ':'.&escape($crstype).':'.&escape($inststatuslist).
7166: ':'.&escape($instcode).':'.&escape($instseclist),
7167: $homeserver));
7168: }
7169: return $response;
7170: }
7171:
7172: sub auto_validate_class_sec {
7173: my ($cdom,$cnum,$owners,$inst_class) = @_;
7174: my $homeserver = &homeserver($cnum,$cdom);
7175: my $ownerlist;
7176: if (ref($owners) eq 'ARRAY') {
7177: $ownerlist = join(',',@{$owners});
7178: } else {
7179: $ownerlist = $owners;
7180: }
7181: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7182: &escape($ownerlist).':'.$cdom,$homeserver);
7183: return $response;
7184: }
7185:
7186: # ------------------------------------------------------- Course Group routines
7187:
7188: sub get_coursegroups {
7189: my ($cdom,$cnum,$group,$namespace) = @_;
7190: return(&dump($namespace,$cdom,$cnum,$group));
7191: }
7192:
7193: sub modify_coursegroup {
7194: my ($cdom,$cnum,$groupsettings) = @_;
7195: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7196: }
7197:
7198: sub toggle_coursegroup_status {
7199: my ($cdom,$cnum,$group,$action) = @_;
7200: my ($from_namespace,$to_namespace);
7201: if ($action eq 'delete') {
7202: $from_namespace = 'coursegroups';
7203: $to_namespace = 'deleted_groups';
7204: } else {
7205: $from_namespace = 'deleted_groups';
7206: $to_namespace = 'coursegroups';
7207: }
7208: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7209: if (my $tmp = &error(%curr_group)) {
7210: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7211: return ('read error',$tmp);
7212: } else {
7213: my %savedsettings = %curr_group;
7214: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7215: my $deloutcome;
7216: if ($result eq 'ok') {
7217: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7218: } else {
7219: return ('write error',$result);
7220: }
7221: if ($deloutcome eq 'ok') {
7222: return 'ok';
7223: } else {
7224: return ('delete error',$deloutcome);
7225: }
7226: }
7227: }
7228:
7229: sub modify_group_roles {
7230: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7231: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7232: my $role = 'gr/'.&escape($userprivs);
7233: my ($uname,$udom) = split(/:/,$user);
7234: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7235: if ($result eq 'ok') {
7236: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7237: }
7238: return $result;
7239: }
7240:
7241: sub modify_coursegroup_membership {
7242: my ($cdom,$cnum,$membership) = @_;
7243: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7244: return $result;
7245: }
7246:
7247: sub get_active_groups {
7248: my ($udom,$uname,$cdom,$cnum) = @_;
7249: my $now = time;
7250: my %groups = ();
7251: foreach my $key (keys(%env)) {
7252: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7253: my ($start,$end) = split(/\./,$env{$key});
7254: if (($end!=0) && ($end<$now)) { next; }
7255: if (($start!=0) && ($start>$now)) { next; }
7256: if ($1 eq $cdom && $2 eq $cnum) {
7257: $groups{$3} = $env{$key} ;
7258: }
7259: }
7260: }
7261: return %groups;
7262: }
7263:
7264: sub get_group_membership {
7265: my ($cdom,$cnum,$group) = @_;
7266: return(&dump('groupmembership',$cdom,$cnum,$group));
7267: }
7268:
7269: sub get_users_groups {
7270: my ($udom,$uname,$courseid) = @_;
7271: my @usersgroups;
7272: my $cachetime=1800;
7273:
7274: my $hashid="$udom:$uname:$courseid";
7275: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7276: if (defined($cached)) {
7277: @usersgroups = split(/:/,$grouplist);
7278: } else {
7279: $grouplist = '';
7280: my $courseurl = &courseid_to_courseurl($courseid);
7281: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7282: my $access_end = $env{'course.'.$courseid.
7283: '.default_enrollment_end_date'};
7284: my $now = time;
7285: foreach my $key (keys(%roleshash)) {
7286: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7287: my $group = $1;
7288: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7289: my $start = $2;
7290: my $end = $1;
7291: if ($start == -1) { next; } # deleted from group
7292: if (($start!=0) && ($start>$now)) { next; }
7293: if (($end!=0) && ($end<$now)) {
7294: if ($access_end && $access_end < $now) {
7295: if ($access_end - $end < 86400) {
7296: push(@usersgroups,$group);
7297: }
7298: }
7299: next;
7300: }
7301: push(@usersgroups,$group);
7302: }
7303: }
7304: }
7305: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7306: $grouplist = join(':',@usersgroups);
7307: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7308: }
7309: return @usersgroups;
7310: }
7311:
7312: sub devalidate_getgroups_cache {
7313: my ($udom,$uname,$cdom,$cnum)=@_;
7314: my $courseid = $cdom.'_'.$cnum;
7315:
7316: my $hashid="$udom:$uname:$courseid";
7317: &devalidate_cache_new('getgroups',$hashid);
7318: }
7319:
7320: # ------------------------------------------------------------------ Plain Text
7321:
7322: sub plaintext {
7323: my ($short,$type,$cid,$forcedefault) = @_;
7324: if ($short =~ m{^cr/}) {
7325: return (split('/',$short))[-1];
7326: }
7327: if (!defined($cid)) {
7328: $cid = $env{'request.course.id'};
7329: }
7330: my %rolenames = (
7331: Course => 'std',
7332: Community => 'alt1',
7333: );
7334: if ($cid ne '') {
7335: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7336: unless ($forcedefault) {
7337: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7338: &Apache::lonlocal::mt_escape(\$roletext);
7339: return &Apache::lonlocal::mt($roletext);
7340: }
7341: }
7342: }
7343: if ((defined($type)) && (defined($rolenames{$type})) &&
7344: (defined($rolenames{$type})) &&
7345: (defined($prp{$short}{$rolenames{$type}}))) {
7346: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7347: } elsif ($cid ne '') {
7348: my $crstype = $env{'course.'.$cid.'.type'};
7349: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7350: (defined($prp{$short}{$rolenames{$crstype}}))) {
7351: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7352: }
7353: }
7354: return &Apache::lonlocal::mt($prp{$short}{'std'});
7355: }
7356:
7357: # ----------------------------------------------------------------- Assign Role
7358:
7359: sub assignrole {
7360: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7361: $context)=@_;
7362: my $mrole;
7363: if ($role =~ /^cr\//) {
7364: my $cwosec=$url;
7365: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7366: unless (&allowed('ccr',$cwosec)) {
7367: my $refused = 1;
7368: if ($context eq 'requestcourses') {
7369: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7370: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7371: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7372: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7373: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7374: if ($crsenv{'internal.courseowner'} eq
7375: $env{'user.name'}.':'.$env{'user.domain'}) {
7376: $refused = '';
7377: }
7378: }
7379: }
7380: }
7381: }
7382: if ($refused) {
7383: &logthis('Refused custom assignrole: '.
7384: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7385: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7386: return 'refused';
7387: }
7388: }
7389: $mrole='cr';
7390: } elsif ($role =~ /^gr\//) {
7391: my $cwogrp=$url;
7392: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7393: unless (&allowed('mdg',$cwogrp)) {
7394: &logthis('Refused group assignrole: '.
7395: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7396: $env{'user.name'}.' at '.$env{'user.domain'});
7397: return 'refused';
7398: }
7399: $mrole='gr';
7400: } else {
7401: my $cwosec=$url;
7402: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7403: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7404: my $refused;
7405: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7406: if (!(&allowed('c'.$role,$url))) {
7407: $refused = 1;
7408: }
7409: } else {
7410: $refused = 1;
7411: }
7412: if ($refused) {
7413: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7414: if (!$selfenroll && $context eq 'course') {
7415: my %crsenv;
7416: if ($role eq 'cc' || $role eq 'co') {
7417: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7418: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7419: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7420: if ($crsenv{'internal.courseowner'} eq
7421: $env{'user.name'}.':'.$env{'user.domain'}) {
7422: $refused = '';
7423: }
7424: }
7425: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7426: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7427: if ($crsenv{'internal.courseowner'} eq
7428: $env{'user.name'}.':'.$env{'user.domain'}) {
7429: $refused = '';
7430: }
7431: }
7432: }
7433: }
7434: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7435: $refused = '';
7436: } elsif ($context eq 'requestcourses') {
7437: my @possroles = ('st','ta','ep','in','cc','co');
7438: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7439: my $wrongcc;
7440: if ($cnum =~ /^$match_community$/) {
7441: $wrongcc = 1 if ($role eq 'cc');
7442: } else {
7443: $wrongcc = 1 if ($role eq 'co');
7444: }
7445: unless ($wrongcc) {
7446: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7447: if ($crsenv{'internal.courseowner'} eq
7448: $env{'user.name'}.':'.$env{'user.domain'}) {
7449: $refused = '';
7450: }
7451: }
7452: }
7453: }
7454: if ($refused) {
7455: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7456: ' '.$role.' '.$end.' '.$start.' by '.
7457: $env{'user.name'}.' at '.$env{'user.domain'});
7458: return 'refused';
7459: }
7460: }
7461: } elsif ($role eq 'au') {
7462: if ($url ne '/'.$udom.'/') {
7463: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7464: ' to assign author role for '.$uname.':'.$udom.
7465: ' in domain: '.$url.' refused (wrong domain).');
7466: return 'refused';
7467: }
7468: }
7469: $mrole=$role;
7470: }
7471: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7472: "$udom:$uname:$url".'_'."$mrole=$role";
7473: if ($end) { $command.='_'.$end; }
7474: if ($start) {
7475: if ($end) {
7476: $command.='_'.$start;
7477: } else {
7478: $command.='_0_'.$start;
7479: }
7480: }
7481: my $origstart = $start;
7482: my $origend = $end;
7483: my $delflag;
7484: # actually delete
7485: if ($deleteflag) {
7486: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7487: # modify command to delete the role
7488: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7489: "$udom:$uname:$url".'_'."$mrole";
7490: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7491: # set start and finish to negative values for userrolelog
7492: $start=-1;
7493: $end=-1;
7494: $delflag = 1;
7495: }
7496: }
7497: # send command
7498: my $answer=&reply($command,&homeserver($uname,$udom));
7499: # log new user role if status is ok
7500: if ($answer eq 'ok') {
7501: &userrolelog($role,$uname,$udom,$url,$start,$end);
7502: # for course roles, perform group memberships changes triggered by role change.
7503: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
7504: unless ($role =~ /^gr/) {
7505: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7506: $origstart,$selfenroll,$context);
7507: }
7508: if ($role eq 'cc') {
7509: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7510: }
7511: }
7512: return $answer;
7513: }
7514:
7515: sub autoupdate_coowners {
7516: my ($url,$end,$start,$uname,$udom) = @_;
7517: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7518: if (($cdom ne '') && ($cnum ne '')) {
7519: my $now = time;
7520: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7521: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7522: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7523: my $instcode = $coursehash{'internal.coursecode'};
7524: if ($instcode ne '') {
7525: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7526: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7527: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7528: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7529: if ($result eq 'valid') {
7530: if ($coursehash{'internal.co-owners'}) {
7531: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7532: push(@newcoowners,$coowner);
7533: }
7534: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7535: push(@newcoowners,$uname.':'.$udom);
7536: }
7537: @newcoowners = sort(@newcoowners);
7538: } else {
7539: push(@newcoowners,$uname.':'.$udom);
7540: }
7541: } else {
7542: if ($coursehash{'internal.co-owners'}) {
7543: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7544: unless ($coowner eq $uname.':'.$udom) {
7545: push(@newcoowners,$coowner);
7546: }
7547: }
7548: unless (@newcoowners > 0) {
7549: $delcoowners = 1;
7550: $coowners = '';
7551: }
7552: }
7553: }
7554: if (@newcoowners || $delcoowners) {
7555: &store_coowners($cdom,$cnum,$coursehash{'home'},
7556: $delcoowners,@newcoowners);
7557: }
7558: }
7559: }
7560: }
7561: }
7562: }
7563: }
7564:
7565: sub store_coowners {
7566: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
7567: my $cid = $cdom.'_'.$cnum;
7568: my ($coowners,$delresult,$putresult);
7569: if (@newcoowners) {
7570: $coowners = join(',',@newcoowners);
7571: my %coownershash = (
7572: 'internal.co-owners' => $coowners,
7573: );
7574: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
7575: if ($putresult eq 'ok') {
7576: if ($env{'course.'.$cid.'.num'} eq $cnum) {
7577: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
7578: }
7579: }
7580: }
7581: if ($delcoowners) {
7582: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
7583: if ($delresult eq 'ok') {
7584: if ($env{'course.'.$cid.'.internal.co-owners'}) {
7585: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
7586: }
7587: }
7588: }
7589: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
7590: my %crsinfo =
7591: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
7592: if (ref($crsinfo{$cid}) eq 'HASH') {
7593: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
7594: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
7595: }
7596: }
7597: }
7598:
7599: # -------------------------------------------------- Modify user authentication
7600: # Overrides without validation
7601:
7602: sub modifyuserauth {
7603: my ($udom,$uname,$umode,$upass)=@_;
7604: my $uhome=&homeserver($uname,$udom);
7605: unless (&allowed('mau',$udom)) { return 'refused'; }
7606: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
7607: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7608: ' in domain '.$env{'request.role.domain'});
7609: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7610: &escape($upass),$uhome);
7611: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7612: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7613: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7614: &log($udom,,$uname,$uhome,
7615: 'Authentication changed by '.$env{'user.domain'}.', '.
7616: $env{'user.name'}.', '.$umode.
7617: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7618: unless ($reply eq 'ok') {
7619: &logthis('Authentication mode error: '.$reply);
7620: return 'error: '.$reply;
7621: }
7622: return 'ok';
7623: }
7624:
7625: # --------------------------------------------------------------- Modify a user
7626:
7627: sub modifyuser {
7628: my ($udom, $uname, $uid,
7629: $umode, $upass, $first,
7630: $middle, $last, $gene,
7631: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7632: $udom= &LONCAPA::clean_domain($udom);
7633: $uname=&LONCAPA::clean_username($uname);
7634: my $showcandelete = 'none';
7635: if (ref($candelete) eq 'ARRAY') {
7636: if (@{$candelete} > 0) {
7637: $showcandelete = join(', ',@{$candelete});
7638: }
7639: }
7640: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7641: $umode.', '.$first.', '.$middle.', '.
7642: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7643: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7644: ' desiredhome not specified').
7645: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7646: ' in domain '.$env{'request.role.domain'});
7647: my $uhome=&homeserver($uname,$udom,'true');
7648: my $newuser;
7649: if ($uhome eq 'no_host') {
7650: $newuser = 1;
7651: }
7652: # ----------------------------------------------------------------- Create User
7653: if (($uhome eq 'no_host') &&
7654: (($umode && $upass) || ($umode eq 'localauth'))) {
7655: my $unhome='';
7656: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7657: $unhome = $desiredhome;
7658: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7659: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7660: } else { # load balancing routine for determining $unhome
7661: my $loadm=10000000;
7662: my %servers = &get_servers($udom,'library');
7663: foreach my $tryserver (keys(%servers)) {
7664: my $answer=reply('load',$tryserver);
7665: if (($answer=~/\d+/) && ($answer<$loadm)) {
7666: $loadm=$answer;
7667: $unhome=$tryserver;
7668: }
7669: }
7670: }
7671: if (($unhome eq '') || ($unhome eq 'no_host')) {
7672: return 'error: unable to find a home server for '.$uname.
7673: ' in domain '.$udom;
7674: }
7675: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7676: &escape($upass),$unhome);
7677: unless ($reply eq 'ok') {
7678: return 'error: '.$reply;
7679: }
7680: $uhome=&homeserver($uname,$udom,'true');
7681: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7682: return 'error: unable verify users home machine.';
7683: }
7684: } # End of creation of new user
7685: # ---------------------------------------------------------------------- Add ID
7686: if ($uid) {
7687: $uid=~tr/A-Z/a-z/;
7688: my %uidhash=&idrget($udom,$uname);
7689: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7690: && (!$forceid)) {
7691: unless ($uid eq $uidhash{$uname}) {
7692: return 'error: user id "'.$uid.'" does not match '.
7693: 'current user id "'.$uidhash{$uname}.'".';
7694: }
7695: } else {
7696: &idput($udom,($uname => $uid));
7697: }
7698: }
7699: # -------------------------------------------------------------- Add names, etc
7700: my @tmp=&get('environment',
7701: ['firstname','middlename','lastname','generation','id',
7702: 'permanentemail','inststatus'],
7703: $udom,$uname);
7704: my (%names,%oldnames);
7705: if ($tmp[0] =~ m/^error:.*/) {
7706: %names=();
7707: } else {
7708: %names = @tmp;
7709: %oldnames = %names;
7710: }
7711: #
7712: # If name, email and/or uid are blank (e.g., because an uploaded file
7713: # of users did not contain them), do not overwrite existing values
7714: # unless field is in $candelete array ref.
7715: #
7716:
7717: my @fields = ('firstname','middlename','lastname','generation',
7718: 'permanentemail','id');
7719: my %newvalues;
7720: if (ref($candelete) eq 'ARRAY') {
7721: foreach my $field (@fields) {
7722: if (grep(/^\Q$field\E$/,@{$candelete})) {
7723: if ($field eq 'firstname') {
7724: $names{$field} = $first;
7725: } elsif ($field eq 'middlename') {
7726: $names{$field} = $middle;
7727: } elsif ($field eq 'lastname') {
7728: $names{$field} = $last;
7729: } elsif ($field eq 'generation') {
7730: $names{$field} = $gene;
7731: } elsif ($field eq 'permanentemail') {
7732: $names{$field} = $email;
7733: } elsif ($field eq 'id') {
7734: $names{$field} = $uid;
7735: }
7736: }
7737: }
7738: }
7739: if ($first) { $names{'firstname'} = $first; }
7740: if (defined($middle)) { $names{'middlename'} = $middle; }
7741: if ($last) { $names{'lastname'} = $last; }
7742: if (defined($gene)) { $names{'generation'} = $gene; }
7743: if ($email) {
7744: $email=~s/[^\w\@\.\-\,]//gs;
7745: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
7746: }
7747: if ($uid) { $names{'id'} = $uid; }
7748: if (defined($inststatus)) {
7749: $names{'inststatus'} = '';
7750: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
7751: if (ref($usertypes) eq 'HASH') {
7752: my @okstatuses;
7753: foreach my $item (split(/:/,$inststatus)) {
7754: if (defined($usertypes->{$item})) {
7755: push(@okstatuses,$item);
7756: }
7757: }
7758: if (@okstatuses) {
7759: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
7760: }
7761: }
7762: }
7763: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7764: $umode.', '.$first.', '.$middle.', '.
7765: $last.', '.$gene.', '.$email.', '.$inststatus;
7766: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7767: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7768: } else {
7769: $logmsg .= ' during self creation';
7770: }
7771: my $changed;
7772: if ($newuser) {
7773: $changed = 1;
7774: } else {
7775: foreach my $field (@fields) {
7776: if ($names{$field} ne $oldnames{$field}) {
7777: $changed = 1;
7778: last;
7779: }
7780: }
7781: }
7782: unless ($changed) {
7783: $logmsg = 'No changes in user information needed for: '.$logmsg;
7784: &logthis($logmsg);
7785: return 'ok';
7786: }
7787: my $reply = &put('environment', \%names, $udom,$uname);
7788: if ($reply ne 'ok') {
7789: return 'error: '.$reply;
7790: }
7791: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7792: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7793: }
7794: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7795: &devalidate_cache_new('namescache',$uname.':'.$udom);
7796: $logmsg = 'Success modifying user '.$logmsg;
7797: &logthis($logmsg);
7798: return 'ok';
7799: }
7800:
7801: # -------------------------------------------------------------- Modify student
7802:
7803: sub modifystudent {
7804: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7805: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7806: $selfenroll,$context,$inststatus)=@_;
7807: if (!$cid) {
7808: unless ($cid=$env{'request.course.id'}) {
7809: return 'not_in_class';
7810: }
7811: }
7812: # --------------------------------------------------------------- Make the user
7813: my $reply=&modifyuser
7814: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7815: $desiredhome,$email,$inststatus);
7816: unless ($reply eq 'ok') { return $reply; }
7817: # This will cause &modify_student_enrollment to get the uid from the
7818: # students environment
7819: $uid = undef if (!$forceid);
7820: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7821: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7822: return $reply;
7823: }
7824:
7825: sub modify_student_enrollment {
7826: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7827: my ($cdom,$cnum,$chome);
7828: if (!$cid) {
7829: unless ($cid=$env{'request.course.id'}) {
7830: return 'not_in_class';
7831: }
7832: $cdom=$env{'course.'.$cid.'.domain'};
7833: $cnum=$env{'course.'.$cid.'.num'};
7834: } else {
7835: ($cdom,$cnum)=split(/_/,$cid);
7836: }
7837: $chome=$env{'course.'.$cid.'.home'};
7838: if (!$chome) {
7839: $chome=&homeserver($cnum,$cdom);
7840: }
7841: if (!$chome) { return 'unknown_course'; }
7842: # Make sure the user exists
7843: my $uhome=&homeserver($uname,$udom);
7844: if (($uhome eq '') || ($uhome eq 'no_host')) {
7845: return 'error: no such user';
7846: }
7847: # Get student data if we were not given enough information
7848: if (!defined($first) || $first eq '' ||
7849: !defined($last) || $last eq '' ||
7850: !defined($uid) || $uid eq '' ||
7851: !defined($middle) || $middle eq '' ||
7852: !defined($gene) || $gene eq '') {
7853: # They did not supply us with enough data to enroll the student, so
7854: # we need to pick up more information.
7855: my %tmp = &get('environment',
7856: ['firstname','middlename','lastname', 'generation','id']
7857: ,$udom,$uname);
7858:
7859: #foreach my $key (keys(%tmp)) {
7860: # &logthis("key $key = ".$tmp{$key});
7861: #}
7862: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7863: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7864: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7865: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7866: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7867: }
7868: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7869: my $user = "$uname:$udom";
7870: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
7871: my $reply=cput('classlist',
7872: {$user =>
7873: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7874: $cdom,$cnum);
7875: if (($reply eq 'ok') || ($reply eq 'delayed')) {
7876: &devalidate_getsection_cache($udom,$uname,$cid);
7877: } else {
7878: return 'error: '.$reply;
7879: }
7880: # Add student role to user
7881: my $uurl='/'.$cid;
7882: $uurl=~s/\_/\//g;
7883: if ($usec) {
7884: $uurl.='/'.$usec;
7885: }
7886: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
7887: $selfenroll,$context);
7888: if ($result ne 'ok') {
7889: if ($old_entry{$user} ne '') {
7890: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
7891: } else {
7892: $reply = &del('classlist',[$user],$cdom,$cnum);
7893: }
7894: }
7895: return $result;
7896: }
7897:
7898: sub format_name {
7899: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7900: my $name;
7901: if ($first ne 'lastname') {
7902: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7903: } else {
7904: if ($lastname=~/\S/) {
7905: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7906: $name=~s/\s+,/,/;
7907: } else {
7908: $name.= $firstname.' '.$middlename.' '.$generation;
7909: }
7910: }
7911: $name=~s/^\s+//;
7912: $name=~s/\s+$//;
7913: $name=~s/\s+/ /g;
7914: return $name;
7915: }
7916:
7917: # ------------------------------------------------- Write to course preferences
7918:
7919: sub writecoursepref {
7920: my ($courseid,%prefs)=@_;
7921: $courseid=~s/^\///;
7922: $courseid=~s/\_/\//g;
7923: my ($cdomain,$cnum)=split(/\//,$courseid);
7924: my $chome=homeserver($cnum,$cdomain);
7925: if (($chome eq '') || ($chome eq 'no_host')) {
7926: return 'error: no such course';
7927: }
7928: my $cstring='';
7929: foreach my $pref (keys(%prefs)) {
7930: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7931: }
7932: $cstring=~s/\&$//;
7933: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7934: }
7935:
7936: # ---------------------------------------------------------- Make/modify course
7937:
7938: sub createcourse {
7939: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7940: $course_owner,$crstype,$cnum,$context,$category)=@_;
7941: $url=&declutter($url);
7942: my $cid='';
7943: if ($context eq 'requestcourses') {
7944: my $can_create = 0;
7945: my ($ownername,$ownerdom) = split(':',$course_owner);
7946: if ($udom eq $ownerdom) {
7947: if (&usertools_access($ownername,$ownerdom,$category,undef,
7948: $context)) {
7949: $can_create = 1;
7950: }
7951: } else {
7952: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7953: $category);
7954: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7955: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7956: if (@curr > 0) {
7957: my @options = qw(approval validate autolimit);
7958: my $optregex = join('|',@options);
7959: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7960: $can_create = 1;
7961: }
7962: }
7963: }
7964: }
7965: if ($can_create) {
7966: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7967: unless (&allowed('ccc',$udom)) {
7968: return 'refused';
7969: }
7970: }
7971: } else {
7972: return 'refused';
7973: }
7974: } elsif (!&allowed('ccc',$udom)) {
7975: return 'refused';
7976: }
7977: # --------------------------------------------------------------- Get Unique ID
7978: my $uname;
7979: if ($cnum =~ /^$match_courseid$/) {
7980: my $chome=&homeserver($cnum,$udom,'true');
7981: if (($chome eq '') || ($chome eq 'no_host')) {
7982: $uname = $cnum;
7983: } else {
7984: $uname = &generate_coursenum($udom,$crstype);
7985: }
7986: } else {
7987: $uname = &generate_coursenum($udom,$crstype);
7988: }
7989: return $uname if ($uname =~ /^error/);
7990: # -------------------------------------------------- Check supplied server name
7991: if (!defined($course_server)) {
7992: if (defined(&domain($udom,'primary'))) {
7993: $course_server = &domain($udom,'primary');
7994: } else {
7995: $course_server = $env{'user.home'};
7996: }
7997: }
7998: my %host_servers =
7999: &Apache::lonnet::get_servers($udom,'library');
8000: unless ($host_servers{$course_server}) {
8001: return 'error: invalid home server for course: '.$course_server;
8002: }
8003: # ------------------------------------------------------------- Make the course
8004: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8005: $course_server);
8006: unless ($reply eq 'ok') { return 'error: '.$reply; }
8007: my $uhome=&homeserver($uname,$udom,'true');
8008: if (($uhome eq '') || ($uhome eq 'no_host')) {
8009: return 'error: no such course';
8010: }
8011: # ----------------------------------------------------------------- Course made
8012: # log existence
8013: my $now = time;
8014: my $newcourse = {
8015: $udom.'_'.$uname => {
8016: description => $description,
8017: inst_code => $inst_code,
8018: owner => $course_owner,
8019: type => $crstype,
8020: creator => $env{'user.name'}.':'.
8021: $env{'user.domain'},
8022: created => $now,
8023: context => $context,
8024: },
8025: };
8026: &courseidput($udom,$newcourse,$uhome,'notime');
8027: # set toplevel url
8028: my $topurl=$url;
8029: unless ($nonstandard) {
8030: # ------------------------------------------ For standard courses, make top url
8031: my $mapurl=&clutter($url);
8032: if ($mapurl eq '/res/') { $mapurl=''; }
8033: $env{'form.initmap'}=(<<ENDINITMAP);
8034: <map>
8035: <resource id="1" type="start"></resource>
8036: <resource id="2" src="$mapurl"></resource>
8037: <resource id="3" type="finish"></resource>
8038: <link index="1" from="1" to="2"></link>
8039: <link index="2" from="2" to="3"></link>
8040: </map>
8041: ENDINITMAP
8042: $topurl=&declutter(
8043: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8044: );
8045: }
8046: # ----------------------------------------------------------- Write preferences
8047: &writecoursepref($udom.'_'.$uname,
8048: ('description' => $description,
8049: 'url' => $topurl,
8050: 'internal.creator' => $env{'user.name'}.':'.
8051: $env{'user.domain'},
8052: 'internal.created' => $now,
8053: 'internal.creationcontext' => $context)
8054: );
8055: return '/'.$udom.'/'.$uname;
8056: }
8057:
8058: # ------------------------------------------------------------------- Create ID
8059: sub generate_coursenum {
8060: my ($udom,$crstype) = @_;
8061: my $domdesc = &domain($udom);
8062: return 'error: invalid domain' if ($domdesc eq '');
8063: my $first;
8064: if ($crstype eq 'Community') {
8065: $first = '0';
8066: } else {
8067: $first = int(1+rand(9));
8068: }
8069: my $uname=$first.
8070: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8071: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8072: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8073: # ----------------------------------------------- Make sure that does not exist
8074: my $uhome=&homeserver($uname,$udom,'true');
8075: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8076: if ($crstype eq 'Community') {
8077: $first = '0';
8078: } else {
8079: $first = int(1+rand(9));
8080: }
8081: $uname=$first.
8082: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8083: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8084: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8085: $uhome=&homeserver($uname,$udom,'true');
8086: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8087: return 'error: unable to generate unique course-ID';
8088: }
8089: }
8090: return $uname;
8091: }
8092:
8093: sub is_course {
8094: my ($cdom, $cnum) = scalar(@_) == 1 ?
8095: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8096:
8097: return unless $cdom and $cnum;
8098:
8099: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8100: '.');
8101:
8102: return unless exists($courses{$cdom.'_'.$cnum});
8103: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8104: }
8105:
8106: sub store_userdata {
8107: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8108: my $result;
8109: if ($datakey ne '') {
8110: if (ref($storehash) eq 'HASH') {
8111: if ($udom eq '' || $uname eq '') {
8112: $udom = $env{'user.domain'};
8113: $uname = $env{'user.name'};
8114: }
8115: my $uhome=&homeserver($uname,$udom);
8116: if (($uhome eq '') || ($uhome eq 'no_host')) {
8117: $result = 'error: no_host';
8118: } else {
8119: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8120: $storehash->{'host'} = $perlvar{'lonHostID'};
8121:
8122: my $namevalue='';
8123: foreach my $key (keys(%{$storehash})) {
8124: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8125: }
8126: $namevalue=~s/\&$//;
8127: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8128: $namevalue,$uhome);
8129: }
8130: } else {
8131: $result = 'error: data to store was not a hash reference';
8132: }
8133: } else {
8134: $result= 'error: invalid requestkey';
8135: }
8136: return $result;
8137: }
8138:
8139: # ---------------------------------------------------------- Assign Custom Role
8140:
8141: sub assigncustomrole {
8142: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8143: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8144: $end,$start,$deleteflag,$selfenroll,$context);
8145: }
8146:
8147: # ----------------------------------------------------------------- Revoke Role
8148:
8149: sub revokerole {
8150: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8151: my $now=time;
8152: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8153: }
8154:
8155: # ---------------------------------------------------------- Revoke Custom Role
8156:
8157: sub revokecustomrole {
8158: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8159: my $now=time;
8160: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8161: $deleteflag,$selfenroll,$context);
8162: }
8163:
8164: # ------------------------------------------------------------ Disk usage
8165: sub diskusage {
8166: my ($udom,$uname,$directorypath,$getpropath)=@_;
8167: $directorypath =~ s/\/$//;
8168: my $listing=&reply('du2:'.&escape($directorypath).':'
8169: .&escape($getpropath).':'.&escape($uname).':'
8170: .&escape($udom),homeserver($uname,$udom));
8171: if ($listing eq 'unknown_cmd') {
8172: if ($getpropath) {
8173: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8174: }
8175: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8176: }
8177: return $listing;
8178: }
8179:
8180: sub is_locked {
8181: my ($file_name, $domain, $user, $which) = @_;
8182: my @check;
8183: my $is_locked;
8184: push (@check,$file_name);
8185: my %locked = &get('file_permissions',\@check,
8186: $env{'user.domain'},$env{'user.name'});
8187: my ($tmp)=keys(%locked);
8188: if ($tmp=~/^error:/) { undef(%locked); }
8189:
8190: if (ref($locked{$file_name}) eq 'ARRAY') {
8191: $is_locked = 'false';
8192: foreach my $entry (@{$locked{$file_name}}) {
8193: if (ref($entry) eq 'ARRAY') {
8194: $is_locked = 'true';
8195: if (ref($which) eq 'ARRAY') {
8196: push(@{$which},$entry);
8197: } else {
8198: last;
8199: }
8200: }
8201: }
8202: } else {
8203: $is_locked = 'false';
8204: }
8205: return $is_locked;
8206: }
8207:
8208: sub declutter_portfile {
8209: my ($file) = @_;
8210: $file =~ s{^(/portfolio/|portfolio/)}{/};
8211: return $file;
8212: }
8213:
8214: # ------------------------------------------------------------- Mark as Read Only
8215:
8216: sub mark_as_readonly {
8217: my ($domain,$user,$files,$what) = @_;
8218: my %current_permissions = &dump('file_permissions',$domain,$user);
8219: my ($tmp)=keys(%current_permissions);
8220: if ($tmp=~/^error:/) { undef(%current_permissions); }
8221: foreach my $file (@{$files}) {
8222: $file = &declutter_portfile($file);
8223: push(@{$current_permissions{$file}},$what);
8224: }
8225: &put('file_permissions',\%current_permissions,$domain,$user);
8226: return;
8227: }
8228:
8229: # ------------------------------------------------------------Save Selected Files
8230:
8231: sub save_selected_files {
8232: my ($user, $path, @files) = @_;
8233: my $filename = $user."savedfiles";
8234: my @other_files = &files_not_in_path($user, $path);
8235: open (OUT, '>'.$tmpdir.$filename);
8236: foreach my $file (@files) {
8237: print (OUT $env{'form.currentpath'}.$file."\n");
8238: }
8239: foreach my $file (@other_files) {
8240: print (OUT $file."\n");
8241: }
8242: close (OUT);
8243: return 'ok';
8244: }
8245:
8246: sub clear_selected_files {
8247: my ($user) = @_;
8248: my $filename = $user."savedfiles";
8249: open (OUT, '>'.LONCAPA::tempdir().$filename);
8250: print (OUT undef);
8251: close (OUT);
8252: return ("ok");
8253: }
8254:
8255: sub files_in_path {
8256: my ($user, $path) = @_;
8257: my $filename = $user."savedfiles";
8258: my %return_files;
8259: open (IN, '<'.LONCAPA::tempdir().$filename);
8260: while (my $line_in = <IN>) {
8261: chomp ($line_in);
8262: my @paths_and_file = split (m!/!, $line_in);
8263: my $file_part = pop (@paths_and_file);
8264: my $path_part = join ('/', @paths_and_file);
8265: $path_part.='/';
8266: my $path_and_file = $path_part.$file_part;
8267: if ($path_part eq $path) {
8268: $return_files{$file_part}= 'selected';
8269: }
8270: }
8271: close (IN);
8272: return (\%return_files);
8273: }
8274:
8275: # called in portfolio select mode, to show files selected NOT in current directory
8276: sub files_not_in_path {
8277: my ($user, $path) = @_;
8278: my $filename = $user."savedfiles";
8279: my @return_files;
8280: my $path_part;
8281: open(IN, '<'.LONCAPA::.$filename);
8282: while (my $line = <IN>) {
8283: #ok, I know it's clunky, but I want it to work
8284: my @paths_and_file = split(m|/|, $line);
8285: my $file_part = pop(@paths_and_file);
8286: chomp($file_part);
8287: my $path_part = join('/', @paths_and_file);
8288: $path_part .= '/';
8289: my $path_and_file = $path_part.$file_part;
8290: if ($path_part ne $path) {
8291: push(@return_files, ($path_and_file));
8292: }
8293: }
8294: close(OUT);
8295: return (@return_files);
8296: }
8297:
8298: #----------------------------------------------Get portfolio file permissions
8299:
8300: sub get_portfile_permissions {
8301: my ($domain,$user) = @_;
8302: my %current_permissions = &dump('file_permissions',$domain,$user);
8303: my ($tmp)=keys(%current_permissions);
8304: if ($tmp=~/^error:/) { undef(%current_permissions); }
8305: return \%current_permissions;
8306: }
8307:
8308: #---------------------------------------------Get portfolio file access controls
8309:
8310: sub get_access_controls {
8311: my ($current_permissions,$group,$file) = @_;
8312: my %access;
8313: my $real_file = $file;
8314: $file =~ s/\.meta$//;
8315: if (defined($file)) {
8316: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8317: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8318: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8319: }
8320: }
8321: } else {
8322: foreach my $key (keys(%{$current_permissions})) {
8323: if ($key =~ /\0accesscontrol$/) {
8324: if (defined($group)) {
8325: if ($key !~ m-^\Q$group\E/-) {
8326: next;
8327: }
8328: }
8329: my ($fullpath) = split(/\0/,$key);
8330: if (ref($$current_permissions{$key}) eq 'HASH') {
8331: foreach my $control (keys(%{$$current_permissions{$key}})) {
8332: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8333: }
8334: }
8335: }
8336: }
8337: }
8338: return %access;
8339: }
8340:
8341: sub modify_access_controls {
8342: my ($file_name,$changes,$domain,$user)=@_;
8343: my ($outcome,$deloutcome);
8344: my %store_permissions;
8345: my %new_values;
8346: my %new_control;
8347: my %translation;
8348: my @deletions = ();
8349: my $now = time;
8350: if (exists($$changes{'activate'})) {
8351: if (ref($$changes{'activate'}) eq 'HASH') {
8352: my @newitems = sort(keys(%{$$changes{'activate'}}));
8353: my $numnew = scalar(@newitems);
8354: for (my $i=0; $i<$numnew; $i++) {
8355: my $newkey = $newitems[$i];
8356: my $newid = &Apache::loncommon::get_cgi_id();
8357: if ($newkey =~ /^\d+:/) {
8358: $newkey =~ s/^(\d+)/$newid/;
8359: $translation{$1} = $newid;
8360: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8361: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8362: $translation{$1} = $newid;
8363: }
8364: $new_values{$file_name."\0".$newkey} =
8365: $$changes{'activate'}{$newitems[$i]};
8366: $new_control{$newkey} = $now;
8367: }
8368: }
8369: }
8370: my %todelete;
8371: my %changed_items;
8372: foreach my $action ('delete','update') {
8373: if (exists($$changes{$action})) {
8374: if (ref($$changes{$action}) eq 'HASH') {
8375: foreach my $key (keys(%{$$changes{$action}})) {
8376: my ($itemnum) = ($key =~ /^([^:]+):/);
8377: if ($action eq 'delete') {
8378: $todelete{$itemnum} = 1;
8379: } else {
8380: $changed_items{$itemnum} = $key;
8381: }
8382: }
8383: }
8384: }
8385: }
8386: # get lock on access controls for file.
8387: my $lockhash = {
8388: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8389: ':'.$env{'user.domain'},
8390: };
8391: my $tries = 0;
8392: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8393:
8394: while (($gotlock ne 'ok') && $tries <3) {
8395: $tries ++;
8396: sleep 1;
8397: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8398: }
8399: if ($gotlock eq 'ok') {
8400: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8401: my ($tmp)=keys(%curr_permissions);
8402: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8403: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8404: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8405: if (ref($curr_controls) eq 'HASH') {
8406: foreach my $control_item (keys(%{$curr_controls})) {
8407: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8408: if (defined($todelete{$itemnum})) {
8409: push(@deletions,$file_name."\0".$control_item);
8410: } else {
8411: if (defined($changed_items{$itemnum})) {
8412: $new_control{$changed_items{$itemnum}} = $now;
8413: push(@deletions,$file_name."\0".$control_item);
8414: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8415: } else {
8416: $new_control{$control_item} = $$curr_controls{$control_item};
8417: }
8418: }
8419: }
8420: }
8421: }
8422: my ($group);
8423: if (&is_course($domain,$user)) {
8424: ($group,my $file) = split(/\//,$file_name,2);
8425: }
8426: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8427: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8428: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8429: # remove lock
8430: my @del_lock = ($file_name."\0".'locked_access_records');
8431: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8432: my $sqlresult =
8433: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8434: $group);
8435: } else {
8436: $outcome = "error: could not obtain lockfile\n";
8437: }
8438: return ($outcome,$deloutcome,\%new_values,\%translation);
8439: }
8440:
8441: sub make_public_indefinitely {
8442: my ($requrl) = @_;
8443: my $now = time;
8444: my $action = 'activate';
8445: my $aclnum = 0;
8446: if (&is_portfolio_url($requrl)) {
8447: my (undef,$udom,$unum,$file_name,$group) =
8448: &parse_portfolio_url($requrl);
8449: my $current_perms = &get_portfile_permissions($udom,$unum);
8450: my %access_controls = &get_access_controls($current_perms,
8451: $group,$file_name);
8452: foreach my $key (keys(%{$access_controls{$file_name}})) {
8453: my ($num,$scope,$end,$start) =
8454: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8455: if ($scope eq 'public') {
8456: if ($start <= $now && $end == 0) {
8457: $action = 'none';
8458: } else {
8459: $action = 'update';
8460: $aclnum = $num;
8461: }
8462: last;
8463: }
8464: }
8465: if ($action eq 'none') {
8466: return 'ok';
8467: } else {
8468: my %changes;
8469: my $newend = 0;
8470: my $newstart = $now;
8471: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8472: $changes{$action}{$newkey} = {
8473: type => 'public',
8474: time => {
8475: start => $newstart,
8476: end => $newend,
8477: },
8478: };
8479: my ($outcome,$deloutcome,$new_values,$translation) =
8480: &modify_access_controls($file_name,\%changes,$udom,$unum);
8481: return $outcome;
8482: }
8483: } else {
8484: return 'invalid';
8485: }
8486: }
8487:
8488: #------------------------------------------------------Get Marked as Read Only
8489:
8490: sub get_marked_as_readonly {
8491: my ($domain,$user,$what,$group) = @_;
8492: my $current_permissions = &get_portfile_permissions($domain,$user);
8493: my @readonly_files;
8494: my $cmp1=$what;
8495: if (ref($what)) { $cmp1=join('',@{$what}) };
8496: while (my ($file_name,$value) = each(%{$current_permissions})) {
8497: if (defined($group)) {
8498: if ($file_name !~ m-^\Q$group\E/-) {
8499: next;
8500: }
8501: }
8502: if (ref($value) eq "ARRAY"){
8503: foreach my $stored_what (@{$value}) {
8504: my $cmp2=$stored_what;
8505: if (ref($stored_what) eq 'ARRAY') {
8506: $cmp2=join('',@{$stored_what});
8507: }
8508: if ($cmp1 eq $cmp2) {
8509: push(@readonly_files, $file_name);
8510: last;
8511: } elsif (!defined($what)) {
8512: push(@readonly_files, $file_name);
8513: last;
8514: }
8515: }
8516: }
8517: }
8518: return @readonly_files;
8519: }
8520: #-----------------------------------------------------------Get Marked as Read Only Hash
8521:
8522: sub get_marked_as_readonly_hash {
8523: my ($current_permissions,$group,$what) = @_;
8524: my %readonly_files;
8525: while (my ($file_name,$value) = each(%{$current_permissions})) {
8526: if (defined($group)) {
8527: if ($file_name !~ m-^\Q$group\E/-) {
8528: next;
8529: }
8530: }
8531: if (ref($value) eq "ARRAY"){
8532: foreach my $stored_what (@{$value}) {
8533: if (ref($stored_what) eq 'ARRAY') {
8534: foreach my $lock_descriptor(@{$stored_what}) {
8535: if ($lock_descriptor eq 'graded') {
8536: $readonly_files{$file_name} = 'graded';
8537: } elsif ($lock_descriptor eq 'handback') {
8538: $readonly_files{$file_name} = 'handback';
8539: } else {
8540: if (!exists($readonly_files{$file_name})) {
8541: $readonly_files{$file_name} = 'locked';
8542: }
8543: }
8544: }
8545: }
8546: }
8547: }
8548: }
8549: return %readonly_files;
8550: }
8551: # ------------------------------------------------------------ Unmark as Read Only
8552:
8553: sub unmark_as_readonly {
8554: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8555: # for portfolio submissions, $what contains [$symb,$crsid]
8556: my ($domain,$user,$what,$file_name,$group) = @_;
8557: $file_name = &declutter_portfile($file_name);
8558: my $symb_crs = $what;
8559: if (ref($what)) { $symb_crs=join('',@$what); }
8560: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
8561: my ($tmp)=keys(%current_permissions);
8562: if ($tmp=~/^error:/) { undef(%current_permissions); }
8563: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
8564: foreach my $file (@readonly_files) {
8565: my $clean_file = &declutter_portfile($file);
8566: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
8567: my $current_locks = $current_permissions{$file};
8568: my @new_locks;
8569: my @del_keys;
8570: if (ref($current_locks) eq "ARRAY"){
8571: foreach my $locker (@{$current_locks}) {
8572: my $compare=$locker;
8573: if (ref($locker) eq 'ARRAY') {
8574: $compare=join('',@{$locker});
8575: if ($compare ne $symb_crs) {
8576: push(@new_locks, $locker);
8577: }
8578: }
8579: }
8580: if (scalar(@new_locks) > 0) {
8581: $current_permissions{$file} = \@new_locks;
8582: } else {
8583: push(@del_keys, $file);
8584: &del('file_permissions',\@del_keys, $domain, $user);
8585: delete($current_permissions{$file});
8586: }
8587: }
8588: }
8589: &put('file_permissions',\%current_permissions,$domain,$user);
8590: return;
8591: }
8592:
8593: # ------------------------------------------------------------ Directory lister
8594:
8595: sub dirlist {
8596: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
8597: $uri=~s/^\///;
8598: $uri=~s/\/$//;
8599: my ($udom, $uname);
8600: if ($getuserdir) {
8601: $udom = $userdomain;
8602: $uname = $username;
8603: } else {
8604: (undef,$udom,$uname)=split(/\//,$uri);
8605: if(defined($userdomain)) {
8606: $udom = $userdomain;
8607: }
8608: if(defined($username)) {
8609: $uname = $username;
8610: }
8611: }
8612: my ($dirRoot,$listing,@listing_results);
8613:
8614: $dirRoot = $perlvar{'lonDocRoot'};
8615: if (defined($getpropath)) {
8616: $dirRoot = &propath($udom,$uname);
8617: $dirRoot =~ s/\/$//;
8618: } elsif (defined($getuserdir)) {
8619: my $subdir=$uname.'__';
8620: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
8621: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8622: ."/$udom/$subdir/$uname";
8623: } elsif (defined($alternateRoot)) {
8624: $dirRoot = $alternateRoot;
8625: }
8626:
8627: if($udom) {
8628: if($uname) {
8629: my $uhome = &homeserver($uname,$udom);
8630: if ($uhome eq 'no_host') {
8631: return ([],'no_host');
8632: }
8633: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8634: .$getuserdir.':'.&escape($dirRoot)
8635: .':'.&escape($uname).':'.&escape($udom),$uhome);
8636: if ($listing eq 'unknown_cmd') {
8637: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
8638: } else {
8639: @listing_results = map { &unescape($_); } split(/:/,$listing);
8640: }
8641: if ($listing eq 'unknown_cmd') {
8642: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
8643: @listing_results = split(/:/,$listing);
8644: } else {
8645: @listing_results = map { &unescape($_); } split(/:/,$listing);
8646: }
8647: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8648: ($listing eq 'rejected') || ($listing eq 'refused') ||
8649: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8650: return ([],$listing);
8651: } else {
8652: return (\@listing_results);
8653: }
8654: } elsif(!$alternateRoot) {
8655: my (%allusers,%listerror);
8656: my %servers = &get_servers($udom,'library');
8657: foreach my $tryserver (keys(%servers)) {
8658: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8659: &escape($udom),$tryserver);
8660: if ($listing eq 'unknown_cmd') {
8661: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8662: $udom, $tryserver);
8663: } else {
8664: @listing_results = map { &unescape($_); } split(/:/,$listing);
8665: }
8666: if ($listing eq 'unknown_cmd') {
8667: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8668: $udom, $tryserver);
8669: @listing_results = split(/:/,$listing);
8670: } else {
8671: @listing_results =
8672: map { &unescape($_); } split(/:/,$listing);
8673: }
8674: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8675: ($listing eq 'rejected') || ($listing eq 'refused') ||
8676: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8677: $listerror{$tryserver} = $listing;
8678: } else {
8679: foreach my $line (@listing_results) {
8680: my ($entry) = split(/&/,$line,2);
8681: $allusers{$entry} = 1;
8682: }
8683: }
8684: }
8685: my @alluserslist=();
8686: foreach my $user (sort(keys(%allusers))) {
8687: push(@alluserslist,$user.'&user');
8688: }
8689: return (\@alluserslist);
8690: } else {
8691: return ([],'missing username');
8692: }
8693: } elsif(!defined($getpropath)) {
8694: my $path = $perlvar{'lonDocRoot'}.'/res/';
8695: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
8696: return (\@all_domains);
8697: } else {
8698: return ([],'missing domain');
8699: }
8700: }
8701:
8702: # --------------------------------------------- GetFileTimestamp
8703: # This function utilizes dirlist and returns the date stamp for
8704: # when it was last modified. It will also return an error of -1
8705: # if an error occurs
8706:
8707: sub GetFileTimestamp {
8708: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
8709: $studentDomain = &LONCAPA::clean_domain($studentDomain);
8710: $studentName = &LONCAPA::clean_username($studentName);
8711: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
8712: undef,$getuserdir);
8713: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8714: return -1;
8715: }
8716: if (ref($fileref) eq 'ARRAY') {
8717: my @stats = split('&',$fileref->[0]);
8718: # @stats contains first the filename, then the stat output
8719: return $stats[10]; # so this is 10 instead of 9.
8720: } else {
8721: return -1;
8722: }
8723: }
8724:
8725: sub stat_file {
8726: my ($uri) = @_;
8727: $uri = &clutter_with_no_wrapper($uri);
8728:
8729: my ($udom,$uname,$file);
8730: if ($uri =~ m-^/(uploaded|editupload)/-) {
8731: ($udom,$uname,$file) =
8732: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
8733: $file = 'userfiles/'.$file;
8734: }
8735: if ($uri =~ m-^/res/-) {
8736: ($udom,$uname) =
8737: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
8738: $file = $uri;
8739: }
8740:
8741: if (!$udom || !$uname || !$file) {
8742: # unable to handle the uri
8743: return ();
8744: }
8745: my $getpropath;
8746: if ($file =~ /^userfiles\//) {
8747: $getpropath = 1;
8748: }
8749: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
8750: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8751: return ();
8752: } else {
8753: if (ref($listref) eq 'ARRAY') {
8754: my @stats = split('&',$listref->[0]);
8755: shift(@stats); #filename is first
8756: return @stats;
8757: }
8758: }
8759: return ();
8760: }
8761:
8762: # -------------------------------------------------------- Value of a Condition
8763:
8764: # gets the value of a specific preevaluated condition
8765: # stored in the string $env{user.state.<cid>}
8766: # or looks up a condition reference in the bighash and if if hasn't
8767: # already been evaluated recurses into docondval to get the value of
8768: # the condition, then memoizing it to
8769: # $env{user.state.<cid>.<condition>}
8770: sub directcondval {
8771: my $number=shift;
8772: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
8773: &Apache::lonuserstate::evalstate();
8774: }
8775: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
8776: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
8777: } elsif ($number =~ /^_/) {
8778: my $sub_condition;
8779: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8780: &GDBM_READER(),0640)) {
8781: $sub_condition=$bighash{'conditions'.$number};
8782: untie(%bighash);
8783: }
8784: my $value = &docondval($sub_condition);
8785: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
8786: return $value;
8787: }
8788: if ($env{'user.state.'.$env{'request.course.id'}}) {
8789: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8790: } else {
8791: return 2;
8792: }
8793: }
8794:
8795: # get the collection of conditions for this resource
8796: sub condval {
8797: my $condidx=shift;
8798: my $allpathcond='';
8799: foreach my $cond (split(/\|/,$condidx)) {
8800: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8801: $allpathcond.=
8802: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8803: }
8804: }
8805: $allpathcond=~s/\|$//;
8806: return &docondval($allpathcond);
8807: }
8808:
8809: #evaluates an expression of conditions
8810: sub docondval {
8811: my ($allpathcond) = @_;
8812: my $result=0;
8813: if ($env{'request.course.id'}
8814: && defined($allpathcond)) {
8815: my $operand='|';
8816: my @stack;
8817: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8818: if ($chunk eq '(') {
8819: push @stack,($operand,$result);
8820: } elsif ($chunk eq ')') {
8821: my $before=pop @stack;
8822: if (pop @stack eq '&') {
8823: $result=$result>$before?$before:$result;
8824: } else {
8825: $result=$result>$before?$result:$before;
8826: }
8827: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8828: $operand=$chunk;
8829: } else {
8830: my $new=directcondval($chunk);
8831: if ($operand eq '&') {
8832: $result=$result>$new?$new:$result;
8833: } else {
8834: $result=$result>$new?$result:$new;
8835: }
8836: }
8837: }
8838: }
8839: return $result;
8840: }
8841:
8842: # ---------------------------------------------------- Devalidate courseresdata
8843:
8844: sub devalidatecourseresdata {
8845: my ($coursenum,$coursedomain)=@_;
8846: my $hashid=$coursenum.':'.$coursedomain;
8847: &devalidate_cache_new('courseres',$hashid);
8848: }
8849:
8850:
8851: # --------------------------------------------------- Course Resourcedata Query
8852: #
8853: # Parameters:
8854: # $coursenum - Number of the course.
8855: # $coursedomain - Domain at which the course was created.
8856: # Returns:
8857: # A hash of the course parameters along (I think) with timestamps
8858: # and version info.
8859:
8860: sub get_courseresdata {
8861: my ($coursenum,$coursedomain)=@_;
8862: my $coursehom=&homeserver($coursenum,$coursedomain);
8863: my $hashid=$coursenum.':'.$coursedomain;
8864: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8865: my %dumpreply;
8866: unless (defined($cached)) {
8867: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8868: $result=\%dumpreply;
8869: my ($tmp) = keys(%dumpreply);
8870: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8871: &do_cache_new('courseres',$hashid,$result,600);
8872: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8873: return $tmp;
8874: } elsif ($tmp =~ /^(error)/) {
8875: $result=undef;
8876: &do_cache_new('courseres',$hashid,$result,600);
8877: }
8878: }
8879: return $result;
8880: }
8881:
8882: sub devalidateuserresdata {
8883: my ($uname,$udom)=@_;
8884: my $hashid="$udom:$uname";
8885: &devalidate_cache_new('userres',$hashid);
8886: }
8887:
8888: sub get_userresdata {
8889: my ($uname,$udom)=@_;
8890: #most student don\'t have any data set, check if there is some data
8891: if (&EXT_cache_status($udom,$uname)) { return undef; }
8892:
8893: my $hashid="$udom:$uname";
8894: my ($result,$cached)=&is_cached_new('userres',$hashid);
8895: if (!defined($cached)) {
8896: my %resourcedata=&dump('resourcedata',$udom,$uname);
8897: $result=\%resourcedata;
8898: &do_cache_new('userres',$hashid,$result,600);
8899: }
8900: my ($tmp)=keys(%$result);
8901: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8902: return $result;
8903: }
8904: #error 2 occurs when the .db doesn't exist
8905: if ($tmp!~/error: 2 /) {
8906: &logthis("<font color=\"blue\">WARNING:".
8907: " Trying to get resource data for ".
8908: $uname." at ".$udom.": ".
8909: $tmp."</font>");
8910: } elsif ($tmp=~/error: 2 /) {
8911: #&EXT_cache_set($udom,$uname);
8912: &do_cache_new('userres',$hashid,undef,600);
8913: undef($tmp); # not really an error so don't send it back
8914: }
8915: return $tmp;
8916: }
8917: #----------------------------------------------- resdata - return resource data
8918: # Purpose:
8919: # Return resource data for either users or for a course.
8920: # Parameters:
8921: # $name - Course/user name.
8922: # $domain - Name of the domain the user/course is registered on.
8923: # $type - Type of thing $name is (must be 'course' or 'user'
8924: # @which - Array of names of resources desired.
8925: # Returns:
8926: # The value of the first reasource in @which that is found in the
8927: # resource hash.
8928: # Exceptional Conditions:
8929: # If the $type passed in is not valid (not the string 'course' or
8930: # 'user', an undefined reference is returned.
8931: # If none of the resources are found, an undef is returned
8932: sub resdata {
8933: my ($name,$domain,$type,@which)=@_;
8934: my $result;
8935: if ($type eq 'course') {
8936: $result=&get_courseresdata($name,$domain);
8937: } elsif ($type eq 'user') {
8938: $result=&get_userresdata($name,$domain);
8939: }
8940: if (!ref($result)) { return $result; }
8941: foreach my $item (@which) {
8942: if (defined($result->{$item->[0]})) {
8943: return [$result->{$item->[0]},$item->[1]];
8944: }
8945: }
8946: return undef;
8947: }
8948:
8949: #
8950: # EXT resource caching routines
8951: #
8952:
8953: sub clear_EXT_cache_status {
8954: &delenv('cache.EXT.');
8955: }
8956:
8957: sub EXT_cache_status {
8958: my ($target_domain,$target_user) = @_;
8959: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8960: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8961: # We know already the user has no data
8962: return 1;
8963: } else {
8964: return 0;
8965: }
8966: }
8967:
8968: sub EXT_cache_set {
8969: my ($target_domain,$target_user) = @_;
8970: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8971: #&appenv({$cachename => time});
8972: }
8973:
8974: # --------------------------------------------------------- Value of a Variable
8975: sub EXT {
8976:
8977: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8978: unless ($varname) { return ''; }
8979: #get real user name/domain, courseid and symb
8980: my $courseid;
8981: my $publicuser;
8982: if ($symbparm) {
8983: $symbparm=&get_symb_from_alias($symbparm);
8984: }
8985: if (!($uname && $udom)) {
8986: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8987: if (!$symbparm) { $symbparm=$cursymb; }
8988: } else {
8989: $courseid=$env{'request.course.id'};
8990: }
8991: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8992: my $rest;
8993: if (defined($therest[0])) {
8994: $rest=join('.',@therest);
8995: } else {
8996: $rest='';
8997: }
8998:
8999: my $qualifierrest=$qualifier;
9000: if ($rest) { $qualifierrest.='.'.$rest; }
9001: my $spacequalifierrest=$space;
9002: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9003: if ($realm eq 'user') {
9004: # --------------------------------------------------------------- user.resource
9005: if ($space eq 'resource') {
9006: if ( (defined($Apache::lonhomework::parsing_a_problem)
9007: || defined($Apache::lonhomework::parsing_a_task))
9008: &&
9009: ($symbparm eq &symbread()) ) {
9010: # if we are in the middle of processing the resource the
9011: # get the value we are planning on committing
9012: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9013: return $Apache::lonhomework::results{$qualifierrest};
9014: } else {
9015: return $Apache::lonhomework::history{$qualifierrest};
9016: }
9017: } else {
9018: my %restored;
9019: if ($publicuser || $env{'request.state'} eq 'construct') {
9020: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9021: } else {
9022: %restored=&restore($symbparm,$courseid,$udom,$uname);
9023: }
9024: return $restored{$qualifierrest};
9025: }
9026: # ----------------------------------------------------------------- user.access
9027: } elsif ($space eq 'access') {
9028: # FIXME - not supporting calls for a specific user
9029: return &allowed($qualifier,$rest);
9030: # ------------------------------------------ user.preferences, user.environment
9031: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9032: if (($uname eq $env{'user.name'}) &&
9033: ($udom eq $env{'user.domain'})) {
9034: return $env{join('.',('environment',$qualifierrest))};
9035: } else {
9036: my %returnhash;
9037: if (!$publicuser) {
9038: %returnhash=&userenvironment($udom,$uname,
9039: $qualifierrest);
9040: }
9041: return $returnhash{$qualifierrest};
9042: }
9043: # ----------------------------------------------------------------- user.course
9044: } elsif ($space eq 'course') {
9045: # FIXME - not supporting calls for a specific user
9046: return $env{join('.',('request.course',$qualifier))};
9047: # ------------------------------------------------------------------- user.role
9048: } elsif ($space eq 'role') {
9049: # FIXME - not supporting calls for a specific user
9050: my ($role,$where)=split(/\./,$env{'request.role'});
9051: if ($qualifier eq 'value') {
9052: return $role;
9053: } elsif ($qualifier eq 'extent') {
9054: return $where;
9055: }
9056: # ----------------------------------------------------------------- user.domain
9057: } elsif ($space eq 'domain') {
9058: return $udom;
9059: # ------------------------------------------------------------------- user.name
9060: } elsif ($space eq 'name') {
9061: return $uname;
9062: # ---------------------------------------------------- Any other user namespace
9063: } else {
9064: my %reply;
9065: if (!$publicuser) {
9066: %reply=&get($space,[$qualifierrest],$udom,$uname);
9067: }
9068: return $reply{$qualifierrest};
9069: }
9070: } elsif ($realm eq 'query') {
9071: # ---------------------------------------------- pull stuff out of query string
9072: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9073: [$spacequalifierrest]);
9074: return $env{'form.'.$spacequalifierrest};
9075: } elsif ($realm eq 'request') {
9076: # ------------------------------------------------------------- request.browser
9077: if ($space eq 'browser') {
9078: return $env{'browser.'.$qualifier};
9079: # ------------------------------------------------------------ request.filename
9080: } else {
9081: return $env{'request.'.$spacequalifierrest};
9082: }
9083: } elsif ($realm eq 'course') {
9084: # ---------------------------------------------------------- course.description
9085: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9086: } elsif ($realm eq 'resource') {
9087:
9088: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9089: if (!$symbparm) { $symbparm=&symbread(); }
9090: }
9091:
9092: if ($space eq 'title') {
9093: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9094: return &gettitle($symbparm);
9095: }
9096:
9097: if ($space eq 'map') {
9098: my ($map) = &decode_symb($symbparm);
9099: return &symbread($map);
9100: }
9101: if ($space eq 'filename') {
9102: if ($symbparm) {
9103: return &clutter((&decode_symb($symbparm))[2]);
9104: }
9105: return &hreflocation('',$env{'request.filename'});
9106: }
9107:
9108: my ($section, $group, @groups);
9109: my ($courselevelm,$courselevel);
9110: if ($symbparm && defined($courseid) &&
9111: $courseid eq $env{'request.course.id'}) {
9112:
9113: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9114:
9115: # ----------------------------------------------------- Cascading lookup scheme
9116: my $symbp=$symbparm;
9117: my $mapp=&deversion((&decode_symb($symbp))[0]);
9118:
9119: my $symbparm=$symbp.'.'.$spacequalifierrest;
9120: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9121:
9122: if (($env{'user.name'} eq $uname) &&
9123: ($env{'user.domain'} eq $udom)) {
9124: $section=$env{'request.course.sec'};
9125: @groups = split(/:/,$env{'request.course.groups'});
9126: @groups=&sort_course_groups($courseid,@groups);
9127: } else {
9128: if (! defined($usection)) {
9129: $section=&getsection($udom,$uname,$courseid);
9130: } else {
9131: $section = $usection;
9132: }
9133: @groups = &get_users_groups($udom,$uname,$courseid);
9134: }
9135:
9136: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9137: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9138: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9139:
9140: $courselevel=$courseid.'.'.$spacequalifierrest;
9141: my $courselevelr=$courseid.'.'.$symbparm;
9142: $courselevelm=$courseid.'.'.$mapparm;
9143:
9144: # ----------------------------------------------------------- first, check user
9145:
9146: my $userreply=&resdata($uname,$udom,'user',
9147: ([$courselevelr,'resource'],
9148: [$courselevelm,'map' ],
9149: [$courselevel, 'course' ]));
9150: if (defined($userreply)) { return &get_reply($userreply); }
9151:
9152: # ------------------------------------------------ second, check some of course
9153: my $coursereply;
9154: if (@groups > 0) {
9155: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9156: $mapparm,$spacequalifierrest);
9157: if (defined($coursereply)) { return &get_reply($coursereply); }
9158: }
9159:
9160: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9161: $env{'course.'.$courseid.'.domain'},
9162: 'course',
9163: ([$seclevelr, 'resource'],
9164: [$seclevelm, 'map' ],
9165: [$seclevel, 'course' ],
9166: [$courselevelr,'resource']));
9167: if (defined($coursereply)) { return &get_reply($coursereply); }
9168:
9169: # ------------------------------------------------------ third, check map parms
9170: my %parmhash=();
9171: my $thisparm='';
9172: if (tie(%parmhash,'GDBM_File',
9173: $env{'request.course.fn'}.'_parms.db',
9174: &GDBM_READER(),0640)) {
9175: $thisparm=$parmhash{$symbparm};
9176: untie(%parmhash);
9177: }
9178: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9179: }
9180: # ------------------------------------------ fourth, look in resource metadata
9181:
9182: $spacequalifierrest=~s/\./\_/;
9183: my $filename;
9184: if (!$symbparm) { $symbparm=&symbread(); }
9185: if ($symbparm) {
9186: $filename=(&decode_symb($symbparm))[2];
9187: } else {
9188: $filename=$env{'request.filename'};
9189: }
9190: my $metadata=&metadata($filename,$spacequalifierrest);
9191: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9192: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9193: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9194:
9195: # ---------------------------------------------- fourth, look in rest of course
9196: if ($symbparm && defined($courseid) &&
9197: $courseid eq $env{'request.course.id'}) {
9198: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9199: $env{'course.'.$courseid.'.domain'},
9200: 'course',
9201: ([$courselevelm,'map' ],
9202: [$courselevel, 'course']));
9203: if (defined($coursereply)) { return &get_reply($coursereply); }
9204: }
9205: # ------------------------------------------------------------------ Cascade up
9206: unless ($space eq '0') {
9207: my @parts=split(/_/,$space);
9208: my $id=pop(@parts);
9209: my $part=join('_',@parts);
9210: if ($part eq '') { $part='0'; }
9211: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9212: $symbparm,$udom,$uname,$section,1);
9213: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9214: }
9215: if ($recurse) { return undef; }
9216: my $pack_def=&packages_tab_default($filename,$varname);
9217: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9218: # ---------------------------------------------------- Any other user namespace
9219: } elsif ($realm eq 'environment') {
9220: # ----------------------------------------------------------------- environment
9221: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9222: return $env{'environment.'.$spacequalifierrest};
9223: } else {
9224: if ($uname eq 'anonymous' && $udom eq '') {
9225: return '';
9226: }
9227: my %returnhash=&userenvironment($udom,$uname,
9228: $spacequalifierrest);
9229: return $returnhash{$spacequalifierrest};
9230: }
9231: } elsif ($realm eq 'system') {
9232: # ----------------------------------------------------------------- system.time
9233: if ($space eq 'time') {
9234: return time;
9235: }
9236: } elsif ($realm eq 'server') {
9237: # ----------------------------------------------------------------- system.time
9238: if ($space eq 'name') {
9239: return $ENV{'SERVER_NAME'};
9240: }
9241: }
9242: return '';
9243: }
9244:
9245: sub get_reply {
9246: my ($reply_value) = @_;
9247: if (ref($reply_value) eq 'ARRAY') {
9248: if (wantarray) {
9249: return @$reply_value;
9250: }
9251: return $reply_value->[0];
9252: } else {
9253: return $reply_value;
9254: }
9255: }
9256:
9257: sub check_group_parms {
9258: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9259: my @groupitems = ();
9260: my $resultitem;
9261: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9262: foreach my $group (@{$groups}) {
9263: foreach my $level (@levels) {
9264: my $item = $courseid.'.['.$group.'].'.$level->[0];
9265: push(@groupitems,[$item,$level->[1]]);
9266: }
9267: }
9268: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9269: $env{'course.'.$courseid.'.domain'},
9270: 'course',@groupitems);
9271: return $coursereply;
9272: }
9273:
9274: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9275: my ($courseid,@groups) = @_;
9276: @groups = sort(@groups);
9277: return @groups;
9278: }
9279:
9280: sub packages_tab_default {
9281: my ($uri,$varname)=@_;
9282: my (undef,$part,$name)=split(/\./,$varname);
9283:
9284: my (@extension,@specifics,$do_default);
9285: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9286: my ($pack_type,$pack_part)=split(/_/,$package,2);
9287: if ($pack_type eq 'default') {
9288: $do_default=1;
9289: } elsif ($pack_type eq 'extension') {
9290: push(@extension,[$package,$pack_type,$pack_part]);
9291: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9292: # only look at packages defaults for packages that this id is
9293: push(@specifics,[$package,$pack_type,$pack_part]);
9294: }
9295: }
9296: # first look for a package that matches the requested part id
9297: foreach my $package (@specifics) {
9298: my (undef,$pack_type,$pack_part)=@{$package};
9299: next if ($pack_part ne $part);
9300: if (defined($packagetab{"$pack_type&$name&default"})) {
9301: return $packagetab{"$pack_type&$name&default"};
9302: }
9303: }
9304: # look for any possible matching non extension_ package
9305: foreach my $package (@specifics) {
9306: my (undef,$pack_type,$pack_part)=@{$package};
9307: if (defined($packagetab{"$pack_type&$name&default"})) {
9308: return $packagetab{"$pack_type&$name&default"};
9309: }
9310: if ($pack_type eq 'part') { $pack_part='0'; }
9311: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9312: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9313: }
9314: }
9315: # look for any posible extension_ match
9316: foreach my $package (@extension) {
9317: my ($package,$pack_type)=@{$package};
9318: if (defined($packagetab{"$pack_type&$name&default"})) {
9319: return $packagetab{"$pack_type&$name&default"};
9320: }
9321: if (defined($packagetab{$package."&$name&default"})) {
9322: return $packagetab{$package."&$name&default"};
9323: }
9324: }
9325: # look for a global default setting
9326: if ($do_default && defined($packagetab{"default&$name&default"})) {
9327: return $packagetab{"default&$name&default"};
9328: }
9329: return undef;
9330: }
9331:
9332: sub add_prefix_and_part {
9333: my ($prefix,$part)=@_;
9334: my $keyroot;
9335: if (defined($prefix) && $prefix !~ /^__/) {
9336: # prefix that has a part already
9337: $keyroot=$prefix;
9338: } elsif (defined($prefix)) {
9339: # prefix that is missing a part
9340: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9341: } else {
9342: # no prefix at all
9343: if (defined($part)) { $keyroot='_'.$part; }
9344: }
9345: return $keyroot;
9346: }
9347:
9348: # ---------------------------------------------------------------- Get metadata
9349:
9350: my %metaentry;
9351: my %importedpartids;
9352: sub metadata {
9353: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9354: $uri=&declutter($uri);
9355: # if it is a non metadata possible uri return quickly
9356: if (($uri eq '') ||
9357: (($uri =~ m|^/*adm/|) &&
9358: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9359: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9360: return undef;
9361: }
9362: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9363: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9364: return undef;
9365: }
9366: my $filename=$uri;
9367: $uri=~s/\.meta$//;
9368: #
9369: # Is the metadata already cached?
9370: # Look at timestamp of caching
9371: # Everything is cached by the main uri, libraries are never directly cached
9372: #
9373: if (!defined($liburi)) {
9374: my ($result,$cached)=&is_cached_new('meta',$uri);
9375: if (defined($cached)) { return $result->{':'.$what}; }
9376: }
9377: {
9378: # Imported parts would go here
9379: my %importedids=();
9380: my @origfileimportpartids=();
9381: my $importedparts=0;
9382: #
9383: # Is this a recursive call for a library?
9384: #
9385: # if (! exists($metacache{$uri})) {
9386: # $metacache{$uri}={};
9387: # }
9388: my $cachetime = 60*60;
9389: if ($liburi) {
9390: $liburi=&declutter($liburi);
9391: $filename=$liburi;
9392: } else {
9393: &devalidate_cache_new('meta',$uri);
9394: undef(%metaentry);
9395: }
9396: my %metathesekeys=();
9397: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9398: my $metastring;
9399: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9400: my $which = &hreflocation('','/'.($liburi || $uri));
9401: $metastring =
9402: &Apache::lonnet::ssi_body($which,
9403: ('grade_target' => 'meta'));
9404: $cachetime = 1; # only want this cached in the child not long term
9405: } elsif (($uri !~ m -^(editupload)/-) &&
9406: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9407: my $file=&filelocation('',&clutter($filename));
9408: #push(@{$metaentry{$uri.'.file'}},$file);
9409: $metastring=&getfile($file);
9410: }
9411: my $parser=HTML::LCParser->new(\$metastring);
9412: my $token;
9413: undef %metathesekeys;
9414: while ($token=$parser->get_token) {
9415: if ($token->[0] eq 'S') {
9416: if (defined($token->[2]->{'package'})) {
9417: #
9418: # This is a package - get package info
9419: #
9420: my $package=$token->[2]->{'package'};
9421: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9422: if (defined($token->[2]->{'id'})) {
9423: $keyroot.='_'.$token->[2]->{'id'};
9424: }
9425: if ($metaentry{':packages'}) {
9426: $metaentry{':packages'}.=','.$package.$keyroot;
9427: } else {
9428: $metaentry{':packages'}=$package.$keyroot;
9429: }
9430: foreach my $pack_entry (keys(%packagetab)) {
9431: my $part=$keyroot;
9432: $part=~s/^\_//;
9433: if ($pack_entry=~/^\Q$package\E\&/ ||
9434: $pack_entry=~/^\Q$package\E_0\&/) {
9435: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9436: # ignore package.tab specified default values
9437: # here &package_tab_default() will fetch those
9438: if ($subp eq 'default') { next; }
9439: my $value=$packagetab{$pack_entry};
9440: my $unikey;
9441: if ($pack =~ /_0$/) {
9442: $unikey='parameter_0_'.$name;
9443: $part=0;
9444: } else {
9445: $unikey='parameter'.$keyroot.'_'.$name;
9446: }
9447: if ($subp eq 'display') {
9448: $value.=' [Part: '.$part.']';
9449: }
9450: $metaentry{':'.$unikey.'.part'}=$part;
9451: $metathesekeys{$unikey}=1;
9452: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9453: $metaentry{':'.$unikey.'.'.$subp}=$value;
9454: }
9455: if (defined($metaentry{':'.$unikey.'.default'})) {
9456: $metaentry{':'.$unikey}=
9457: $metaentry{':'.$unikey.'.default'};
9458: }
9459: }
9460: }
9461: } else {
9462: #
9463: # This is not a package - some other kind of start tag
9464: #
9465: my $entry=$token->[1];
9466: my $unikey='';
9467:
9468: if ($entry eq 'import') {
9469: #
9470: # Importing a library here
9471: #
9472: my $location=$parser->get_text('/import');
9473: my $dir=$filename;
9474: $dir=~s|[^/]*$||;
9475: $location=&filelocation($dir,$location);
9476:
9477: my $importmode=$token->[2]->{'importmode'};
9478: if ($importmode eq 'problem') {
9479: # Import as problem/response
9480: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9481: } elsif ($importmode eq 'part') {
9482: # Import as part(s)
9483: $importedparts=1;
9484: # We need to get the original file and the imported file to get the part order correct
9485: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9486: # Load and inspect original file
9487: if ($#origfileimportpartids<0) {
9488: undef(%importedpartids);
9489: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9490: my $origfile=&getfile($origfilelocation);
9491: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9492: }
9493:
9494: # Load and inspect imported file
9495: my $impfile=&getfile($location);
9496: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9497: if ($#impfilepartids>=0) {
9498: # This problem had parts
9499: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9500: } else {
9501: # Importing by turning a single problem into a problem part
9502: # It gets the import-tags ID as part-ID
9503: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9504: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9505: }
9506: } else {
9507: # Normal import
9508: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9509: if (defined($token->[2]->{'id'})) {
9510: $unikey.='_'.$token->[2]->{'id'};
9511: }
9512: }
9513:
9514: if ($depthcount<20) {
9515: my $metadata =
9516: &metadata($uri,'keys', $location,$unikey,
9517: $depthcount+1);
9518: foreach my $meta (split(',',$metadata)) {
9519: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9520: $metathesekeys{$meta}=1;
9521: }
9522:
9523: }
9524: } else {
9525: #
9526: # Not importing, some other kind of non-package, non-library start tag
9527: #
9528: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9529: if (defined($token->[2]->{'id'})) {
9530: $unikey.='_'.$token->[2]->{'id'};
9531: }
9532: if (defined($token->[2]->{'name'})) {
9533: $unikey.='_'.$token->[2]->{'name'};
9534: }
9535: $metathesekeys{$unikey}=1;
9536: foreach my $param (@{$token->[3]}) {
9537: $metaentry{':'.$unikey.'.'.$param} =
9538: $token->[2]->{$param};
9539: }
9540: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9541: my $default=$metaentry{':'.$unikey.'.default'};
9542: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9543: # only ws inside the tag, and not in default, so use default
9544: # as value
9545: $metaentry{':'.$unikey}=$default;
9546: } elsif ( $internaltext =~ /\S/ ) {
9547: # something interesting inside the tag
9548: $metaentry{':'.$unikey}=$internaltext;
9549: } else {
9550: # no interesting values, don't set a default
9551: }
9552: # end of not-a-package not-a-library import
9553: }
9554: # end of not-a-package start tag
9555: }
9556: # the next is the end of "start tag"
9557: }
9558: }
9559: my ($extension) = ($uri =~ /\.(\w+)$/);
9560: $extension = lc($extension);
9561: if ($extension eq 'htm') { $extension='html'; }
9562:
9563: foreach my $key (keys(%packagetab)) {
9564: #no specific packages #how's our extension
9565: if ($key!~/^extension_\Q$extension\E&/) { next; }
9566: &metadata_create_package_def($uri,$key,'extension_'.$extension,
9567: \%metathesekeys);
9568: }
9569:
9570: if (!exists($metaentry{':packages'})
9571: || $packagetab{"import_defaults&extension_$extension"}) {
9572: foreach my $key (keys(%packagetab)) {
9573: #no specific packages well let's get default then
9574: if ($key!~/^default&/) { next; }
9575: &metadata_create_package_def($uri,$key,'default',
9576: \%metathesekeys);
9577: }
9578: }
9579: # are there custom rights to evaluate
9580: if ($metaentry{':copyright'} eq 'custom') {
9581:
9582: #
9583: # Importing a rights file here
9584: #
9585: unless ($depthcount) {
9586: my $location=$metaentry{':customdistributionfile'};
9587: my $dir=$filename;
9588: $dir=~s|[^/]*$||;
9589: $location=&filelocation($dir,$location);
9590: my $rights_metadata =
9591: &metadata($uri,'keys',$location,'_rights',
9592: $depthcount+1);
9593: foreach my $rights (split(',',$rights_metadata)) {
9594: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
9595: $metathesekeys{$rights}=1;
9596: }
9597: }
9598: }
9599: # uniqifiy package listing
9600: my %seen;
9601: my @uniq_packages =
9602: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
9603: $metaentry{':packages'} = join(',',@uniq_packages);
9604:
9605: if ($importedparts) {
9606: # We had imported parts and need to rebuild partorder
9607: $metaentry{':partorder'}='';
9608: $metathesekeys{'partorder'}=1;
9609: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
9610: if ($origfileimportpartids[$index] eq 'part') {
9611: # original part, part of the problem
9612: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
9613: } else {
9614: # we have imported parts at this position
9615: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
9616: }
9617: }
9618: $metaentry{':partorder'}=~s/^\,//;
9619: }
9620:
9621: $metaentry{':keys'} = join(',',keys(%metathesekeys));
9622: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
9623: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
9624: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9625: # this is the end of "was not already recently cached
9626: }
9627: return $metaentry{':'.$what};
9628: }
9629:
9630: sub metadata_create_package_def {
9631: my ($uri,$key,$package,$metathesekeys)=@_;
9632: my ($pack,$name,$subp)=split(/\&/,$key);
9633: if ($subp eq 'default') { next; }
9634:
9635: if (defined($metaentry{':packages'})) {
9636: $metaentry{':packages'}.=','.$package;
9637: } else {
9638: $metaentry{':packages'}=$package;
9639: }
9640: my $value=$packagetab{$key};
9641: my $unikey;
9642: $unikey='parameter_0_'.$name;
9643: $metaentry{':'.$unikey.'.part'}=0;
9644: $$metathesekeys{$unikey}=1;
9645: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9646: $metaentry{':'.$unikey.'.'.$subp}=$value;
9647: }
9648: if (defined($metaentry{':'.$unikey.'.default'})) {
9649: $metaentry{':'.$unikey}=
9650: $metaentry{':'.$unikey.'.default'};
9651: }
9652: }
9653:
9654: sub metadata_generate_part0 {
9655: my ($metadata,$metacache,$uri) = @_;
9656: my %allnames;
9657: foreach my $metakey (keys(%$metadata)) {
9658: if ($metakey=~/^parameter\_(.*)/) {
9659: my $part=$$metacache{':'.$metakey.'.part'};
9660: my $name=$$metacache{':'.$metakey.'.name'};
9661: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9662: $allnames{$name}=$part;
9663: }
9664: }
9665: }
9666: foreach my $name (keys(%allnames)) {
9667: $$metadata{"parameter_0_$name"}=1;
9668: my $key=":parameter_0_$name";
9669: $$metacache{"$key.part"}='0';
9670: $$metacache{"$key.name"}=$name;
9671: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9672: $allnames{$name}.'_'.$name.
9673: '.type'};
9674: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9675: '.display'};
9676: my $expr='[Part: '.$allnames{$name}.']';
9677: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9678: $$metacache{"$key.display"}=$olddis;
9679: }
9680: }
9681:
9682: # ------------------------------------------------------ Devalidate title cache
9683:
9684: sub devalidate_title_cache {
9685: my ($url)=@_;
9686: if (!$env{'request.course.id'}) { return; }
9687: my $symb=&symbread($url);
9688: if (!$symb) { return; }
9689: my $key=$env{'request.course.id'}."\0".$symb;
9690: &devalidate_cache_new('title',$key);
9691: }
9692:
9693: # ------------------------------------------------- Get the title of a course
9694:
9695: sub current_course_title {
9696: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
9697: }
9698: # ------------------------------------------------- Get the title of a resource
9699:
9700: sub gettitle {
9701: my $urlsymb=shift;
9702: my $symb=&symbread($urlsymb);
9703: if ($symb) {
9704: my $key=$env{'request.course.id'}."\0".$symb;
9705: my ($result,$cached)=&is_cached_new('title',$key);
9706: if (defined($cached)) {
9707: return $result;
9708: }
9709: my ($map,$resid,$url)=&decode_symb($symb);
9710: my $title='';
9711: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
9712: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
9713: } else {
9714: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9715: &GDBM_READER(),0640)) {
9716: my $mapid=$bighash{'map_pc_'.&clutter($map)};
9717: $title=$bighash{'title_'.$mapid.'.'.$resid};
9718: untie(%bighash);
9719: }
9720: }
9721: $title=~s/\&colon\;/\:/gs;
9722: if ($title) {
9723: # Remember both $symb and $title for dynamic metadata
9724: $accesshash{$symb.'___crstitle'}=$title;
9725: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
9726: # Cache this title and then return it
9727: return &do_cache_new('title',$key,$title,600);
9728: }
9729: $urlsymb=$url;
9730: }
9731: my $title=&metadata($urlsymb,'title');
9732: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
9733: return $title;
9734: }
9735:
9736: sub get_slot {
9737: my ($which,$cnum,$cdom)=@_;
9738: if (!$cnum || !$cdom) {
9739: (undef,my $courseid)=&whichuser();
9740: $cdom=$env{'course.'.$courseid.'.domain'};
9741: $cnum=$env{'course.'.$courseid.'.num'};
9742: }
9743: my $key=join("\0",'slots',$cdom,$cnum,$which);
9744: my %slotinfo;
9745: if (exists($remembered{$key})) {
9746: $slotinfo{$which} = $remembered{$key};
9747: } else {
9748: %slotinfo=&get('slots',[$which],$cdom,$cnum);
9749: &Apache::lonhomework::showhash(%slotinfo);
9750: my ($tmp)=keys(%slotinfo);
9751: if ($tmp=~/^error:/) { return (); }
9752: $remembered{$key} = $slotinfo{$which};
9753: }
9754: if (ref($slotinfo{$which}) eq 'HASH') {
9755: return %{$slotinfo{$which}};
9756: }
9757: return $slotinfo{$which};
9758: }
9759:
9760: sub get_reservable_slots {
9761: my ($cnum,$cdom,$uname,$udom) = @_;
9762: my $now = time;
9763: my $reservable_info;
9764: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
9765: if (exists($remembered{$key})) {
9766: $reservable_info = $remembered{$key};
9767: } else {
9768: my %resv;
9769: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
9770: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
9771: $reservable_info = \%resv;
9772: $remembered{$key} = $reservable_info;
9773: }
9774: return $reservable_info;
9775: }
9776:
9777: sub get_course_slots {
9778: my ($cnum,$cdom) = @_;
9779: my $hashid=$cnum.':'.$cdom;
9780: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
9781: if (defined($cached)) {
9782: if (ref($result) eq 'HASH') {
9783: return %{$result};
9784: }
9785: } else {
9786: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
9787: my ($tmp) = keys(%slots);
9788: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9789: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
9790: return %slots;
9791: }
9792: }
9793: return;
9794: }
9795:
9796: sub devalidate_slots_cache {
9797: my ($cnum,$cdom)=@_;
9798: my $hashid=$cnum.':'.$cdom;
9799: &devalidate_cache_new('allslots',$hashid);
9800: }
9801:
9802: # ------------------------------------------------- Update symbolic store links
9803:
9804: sub symblist {
9805: my ($mapname,%newhash)=@_;
9806: $mapname=&deversion(&declutter($mapname));
9807: my %hash;
9808: if (($env{'request.course.fn'}) && (%newhash)) {
9809: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9810: &GDBM_WRCREAT(),0640)) {
9811: foreach my $url (keys(%newhash)) {
9812: next if ($url eq 'last_known'
9813: && $env{'form.no_update_last_known'});
9814: $hash{declutter($url)}=&encode_symb($mapname,
9815: $newhash{$url}->[1],
9816: $newhash{$url}->[0]);
9817: }
9818: if (untie(%hash)) {
9819: return 'ok';
9820: }
9821: }
9822: }
9823: return 'error';
9824: }
9825:
9826: # --------------------------------------------------------------- Verify a symb
9827:
9828: sub symbverify {
9829: my ($symb,$thisurl)=@_;
9830: my $thisfn=$thisurl;
9831: $thisfn=&declutter($thisfn);
9832: # direct jump to resource in page or to a sequence - will construct own symbs
9833: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
9834: # check URL part
9835: my ($map,$resid,$url)=&decode_symb($symb);
9836:
9837: unless ($url eq $thisfn) { return 0; }
9838:
9839: $symb=&symbclean($symb);
9840: $thisurl=&deversion($thisurl);
9841: $thisfn=&deversion($thisfn);
9842:
9843: my %bighash;
9844: my $okay=0;
9845:
9846: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9847: &GDBM_READER(),0640)) {
9848: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9849: $thisurl =~ s/\?.+$//;
9850: }
9851: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9852: unless ($ids) {
9853: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9854: $ids=$bighash{$idkey};
9855: }
9856: if ($ids) {
9857: # ------------------------------------------------------------------- Has ID(s)
9858: foreach my $id (split(/\,/,$ids)) {
9859: my ($mapid,$resid)=split(/\./,$id);
9860: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9861: $symb =~ s/\?.+$//;
9862: }
9863: if (
9864: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9865: eq $symb) {
9866: if (($env{'request.role.adv'}) ||
9867: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9868: ($thisurl eq '/adm/navmaps')) {
9869: $okay=1;
9870: }
9871: }
9872: }
9873: }
9874: untie(%bighash);
9875: }
9876: return $okay;
9877: }
9878:
9879: # --------------------------------------------------------------- Clean-up symb
9880:
9881: sub symbclean {
9882: my $symb=shift;
9883: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9884: # remove version from map
9885: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9886:
9887: # remove version from URL
9888: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9889:
9890: # remove wrapper
9891:
9892: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9893: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9894: return $symb;
9895: }
9896:
9897: # ---------------------------------------------- Split symb to find map and url
9898:
9899: sub encode_symb {
9900: my ($map,$resid,$url)=@_;
9901: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9902: }
9903:
9904: sub decode_symb {
9905: my $symb=shift;
9906: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9907: my ($map,$resid,$url)=split(/___/,$symb);
9908: return (&fixversion($map),$resid,&fixversion($url));
9909: }
9910:
9911: sub fixversion {
9912: my $fn=shift;
9913: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9914: my %bighash;
9915: my $uri=&clutter($fn);
9916: my $key=$env{'request.course.id'}.'_'.$uri;
9917: # is this cached?
9918: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9919: if (defined($cached)) { return $result; }
9920: # unfortunately not cached, or expired
9921: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9922: &GDBM_READER(),0640)) {
9923: if ($bighash{'version_'.$uri}) {
9924: my $version=$bighash{'version_'.$uri};
9925: unless (($version eq 'mostrecent') ||
9926: ($version==&getversion($uri))) {
9927: $uri=~s/\.(\w+)$/\.$version\.$1/;
9928: }
9929: }
9930: untie %bighash;
9931: }
9932: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9933: }
9934:
9935: sub deversion {
9936: my $url=shift;
9937: $url=~s/\.\d+\.(\w+)$/\.$1/;
9938: return $url;
9939: }
9940:
9941: # ------------------------------------------------------ Return symb list entry
9942:
9943: sub symbread {
9944: my ($thisfn,$donotrecurse)=@_;
9945: my $cache_str='request.symbread.cached.'.$thisfn;
9946: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9947: # no filename provided? try from environment
9948: unless ($thisfn) {
9949: if ($env{'request.symb'}) {
9950: return $env{$cache_str}=&symbclean($env{'request.symb'});
9951: }
9952: $thisfn=$env{'request.filename'};
9953: }
9954: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9955: # is that filename actually a symb? Verify, clean, and return
9956: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9957: if (&symbverify($thisfn,$1)) {
9958: return $env{$cache_str}=&symbclean($thisfn);
9959: }
9960: }
9961: $thisfn=declutter($thisfn);
9962: my %hash;
9963: my %bighash;
9964: my $syval='';
9965: if (($env{'request.course.fn'}) && ($thisfn)) {
9966: my $targetfn = $thisfn;
9967: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9968: $targetfn = 'adm/wrapper/'.$thisfn;
9969: }
9970: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9971: $targetfn=$1;
9972: }
9973: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9974: &GDBM_READER(),0640)) {
9975: $syval=$hash{$targetfn};
9976: untie(%hash);
9977: }
9978: # ---------------------------------------------------------- There was an entry
9979: if ($syval) {
9980: #unless ($syval=~/\_\d+$/) {
9981: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9982: #&appenv({'request.ambiguous' => $thisfn});
9983: #return $env{$cache_str}='';
9984: #}
9985: #$syval.=$1;
9986: #}
9987: } else {
9988: # ------------------------------------------------------- Was not in symb table
9989: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9990: &GDBM_READER(),0640)) {
9991: # ---------------------------------------------- Get ID(s) for current resource
9992: my $ids=$bighash{'ids_'.&clutter($thisfn)};
9993: unless ($ids) {
9994: $ids=$bighash{'ids_/'.$thisfn};
9995: }
9996: unless ($ids) {
9997: # alias?
9998: $ids=$bighash{'mapalias_'.$thisfn};
9999: }
10000: if ($ids) {
10001: # ------------------------------------------------------------------- Has ID(s)
10002: my @possibilities=split(/\,/,$ids);
10003: if ($#possibilities==0) {
10004: # ----------------------------------------------- There is only one possibility
10005: my ($mapid,$resid)=split(/\./,$ids);
10006: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10007: $resid,$thisfn);
10008: } elsif (!$donotrecurse) {
10009: # ------------------------------------------ There is more than one possibility
10010: my $realpossible=0;
10011: foreach my $id (@possibilities) {
10012: my $file=$bighash{'src_'.$id};
10013: if (&allowed('bre',$file)) {
10014: my ($mapid,$resid)=split(/\./,$id);
10015: if ($bighash{'map_type_'.$mapid} ne 'page') {
10016: $realpossible++;
10017: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10018: $resid,$thisfn);
10019: }
10020: }
10021: }
10022: if ($realpossible!=1) { $syval=''; }
10023: } else {
10024: $syval='';
10025: }
10026: }
10027: untie(%bighash)
10028: }
10029: }
10030: if ($syval) {
10031: return $env{$cache_str}=$syval;
10032: }
10033: }
10034: &appenv({'request.ambiguous' => $thisfn});
10035: return $env{$cache_str}='';
10036: }
10037:
10038: # ---------------------------------------------------------- Return random seed
10039:
10040: sub numval {
10041: my $txt=shift;
10042: $txt=~tr/A-J/0-9/;
10043: $txt=~tr/a-j/0-9/;
10044: $txt=~tr/K-T/0-9/;
10045: $txt=~tr/k-t/0-9/;
10046: $txt=~tr/U-Z/0-5/;
10047: $txt=~tr/u-z/0-5/;
10048: $txt=~s/\D//g;
10049: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10050: return int($txt);
10051: }
10052:
10053: sub numval2 {
10054: my $txt=shift;
10055: $txt=~tr/A-J/0-9/;
10056: $txt=~tr/a-j/0-9/;
10057: $txt=~tr/K-T/0-9/;
10058: $txt=~tr/k-t/0-9/;
10059: $txt=~tr/U-Z/0-5/;
10060: $txt=~tr/u-z/0-5/;
10061: $txt=~s/\D//g;
10062: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10063: my $total;
10064: foreach my $val (@txts) { $total+=$val; }
10065: if ($_64bit) { if ($total > 2**32) { return -1; } }
10066: return int($total);
10067: }
10068:
10069: sub numval3 {
10070: use integer;
10071: my $txt=shift;
10072: $txt=~tr/A-J/0-9/;
10073: $txt=~tr/a-j/0-9/;
10074: $txt=~tr/K-T/0-9/;
10075: $txt=~tr/k-t/0-9/;
10076: $txt=~tr/U-Z/0-5/;
10077: $txt=~tr/u-z/0-5/;
10078: $txt=~s/\D//g;
10079: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10080: my $total;
10081: foreach my $val (@txts) { $total+=$val; }
10082: if ($_64bit) { $total=(($total<<32)>>32); }
10083: return $total;
10084: }
10085:
10086: sub digest {
10087: my ($data)=@_;
10088: my $digest=&Digest::MD5::md5($data);
10089: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10090: my ($e,$f);
10091: {
10092: use integer;
10093: $e=($a+$b);
10094: $f=($c+$d);
10095: if ($_64bit) {
10096: $e=(($e<<32)>>32);
10097: $f=(($f<<32)>>32);
10098: }
10099: }
10100: if (wantarray) {
10101: return ($e,$f);
10102: } else {
10103: my $g;
10104: {
10105: use integer;
10106: $g=($e+$f);
10107: if ($_64bit) {
10108: $g=(($g<<32)>>32);
10109: }
10110: }
10111: return $g;
10112: }
10113: }
10114:
10115: sub latest_rnd_algorithm_id {
10116: return '64bit5';
10117: }
10118:
10119: sub get_rand_alg {
10120: my ($courseid)=@_;
10121: if (!$courseid) { $courseid=(&whichuser())[1]; }
10122: if ($courseid) {
10123: return $env{"course.$courseid.rndseed"};
10124: }
10125: return &latest_rnd_algorithm_id();
10126: }
10127:
10128: sub validCODE {
10129: my ($CODE)=@_;
10130: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10131: return 0;
10132: }
10133:
10134: sub getCODE {
10135: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10136: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10137: defined($Apache::lonhomework::parsing_a_task) ) &&
10138: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10139: return $Apache::lonhomework::history{'resource.CODE'};
10140: }
10141: return undef;
10142: }
10143: #
10144: # Determines the random seed for a specific context:
10145: #
10146: # parameters:
10147: # symb - in course context the symb for the seed.
10148: # course_id - The course id of the form domain_coursenum.
10149: # domain - Domain for the user.
10150: # course - Course for the user.
10151: # cenv - environment of the course.
10152: #
10153: # NOTE:
10154: # All parameters are picked out of the environment if missing
10155: # or not defined.
10156: # If a symb cannot be determined the current time is used instead.
10157: #
10158: # For a given well defined symb, courside, domain, username,
10159: # and course environment, the seed is reproducible.
10160: #
10161: sub rndseed {
10162: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10163: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10164: if (!defined($symb)) {
10165: unless ($symb=$wsymb) { return time; }
10166: }
10167: if (!defined $courseid) {
10168: $courseid=$wcourseid;
10169: }
10170: if (!defined $domain) { $domain=$wdomain; }
10171: if (!defined $username) { $username=$wusername }
10172:
10173: my $which;
10174: if (defined($cenv->{'rndseed'})) {
10175: $which = $cenv->{'rndseed'};
10176: } else {
10177: $which =&get_rand_alg($courseid);
10178: }
10179: if (defined(&getCODE())) {
10180:
10181: if ($which eq '64bit5') {
10182: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10183: } elsif ($which eq '64bit4') {
10184: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10185: } else {
10186: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10187: }
10188: } elsif ($which eq '64bit5') {
10189: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10190: } elsif ($which eq '64bit4') {
10191: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10192: } elsif ($which eq '64bit3') {
10193: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10194: } elsif ($which eq '64bit2') {
10195: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10196: } elsif ($which eq '64bit') {
10197: return &rndseed_64bit($symb,$courseid,$domain,$username);
10198: }
10199: return &rndseed_32bit($symb,$courseid,$domain,$username);
10200: }
10201:
10202: sub rndseed_32bit {
10203: my ($symb,$courseid,$domain,$username)=@_;
10204: {
10205: use integer;
10206: my $symbchck=unpack("%32C*",$symb) << 27;
10207: my $symbseed=numval($symb) << 22;
10208: my $namechck=unpack("%32C*",$username) << 17;
10209: my $nameseed=numval($username) << 12;
10210: my $domainseed=unpack("%32C*",$domain) << 7;
10211: my $courseseed=unpack("%32C*",$courseid);
10212: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10213: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10214: #&logthis("rndseed :$num:$symb");
10215: if ($_64bit) { $num=(($num<<32)>>32); }
10216: return $num;
10217: }
10218: }
10219:
10220: sub rndseed_64bit {
10221: my ($symb,$courseid,$domain,$username)=@_;
10222: {
10223: use integer;
10224: my $symbchck=unpack("%32S*",$symb) << 21;
10225: my $symbseed=numval($symb) << 10;
10226: my $namechck=unpack("%32S*",$username);
10227:
10228: my $nameseed=numval($username) << 21;
10229: my $domainseed=unpack("%32S*",$domain) << 10;
10230: my $courseseed=unpack("%32S*",$courseid);
10231:
10232: my $num1=$symbchck+$symbseed+$namechck;
10233: my $num2=$nameseed+$domainseed+$courseseed;
10234: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10235: #&logthis("rndseed :$num:$symb");
10236: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10237: return "$num1,$num2";
10238: }
10239: }
10240:
10241: sub rndseed_64bit2 {
10242: my ($symb,$courseid,$domain,$username)=@_;
10243: {
10244: use integer;
10245: # strings need to be an even # of cahracters long, it it is odd the
10246: # last characters gets thrown away
10247: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10248: my $symbseed=numval($symb) << 10;
10249: my $namechck=unpack("%32S*",$username.' ');
10250:
10251: my $nameseed=numval($username) << 21;
10252: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10253: my $courseseed=unpack("%32S*",$courseid.' ');
10254:
10255: my $num1=$symbchck+$symbseed+$namechck;
10256: my $num2=$nameseed+$domainseed+$courseseed;
10257: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10258: #&logthis("rndseed :$num:$symb");
10259: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10260: return "$num1,$num2";
10261: }
10262: }
10263:
10264: sub rndseed_64bit3 {
10265: my ($symb,$courseid,$domain,$username)=@_;
10266: {
10267: use integer;
10268: # strings need to be an even # of cahracters long, it it is odd the
10269: # last characters gets thrown away
10270: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10271: my $symbseed=numval2($symb) << 10;
10272: my $namechck=unpack("%32S*",$username.' ');
10273:
10274: my $nameseed=numval2($username) << 21;
10275: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10276: my $courseseed=unpack("%32S*",$courseid.' ');
10277:
10278: my $num1=$symbchck+$symbseed+$namechck;
10279: my $num2=$nameseed+$domainseed+$courseseed;
10280: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10281: #&logthis("rndseed :$num1:$num2:$_64bit");
10282: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10283:
10284: return "$num1:$num2";
10285: }
10286: }
10287:
10288: sub rndseed_64bit4 {
10289: my ($symb,$courseid,$domain,$username)=@_;
10290: {
10291: use integer;
10292: # strings need to be an even # of cahracters long, it it is odd the
10293: # last characters gets thrown away
10294: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10295: my $symbseed=numval3($symb) << 10;
10296: my $namechck=unpack("%32S*",$username.' ');
10297:
10298: my $nameseed=numval3($username) << 21;
10299: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10300: my $courseseed=unpack("%32S*",$courseid.' ');
10301:
10302: my $num1=$symbchck+$symbseed+$namechck;
10303: my $num2=$nameseed+$domainseed+$courseseed;
10304: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10305: #&logthis("rndseed :$num1:$num2:$_64bit");
10306: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10307:
10308: return "$num1:$num2";
10309: }
10310: }
10311:
10312: sub rndseed_64bit5 {
10313: my ($symb,$courseid,$domain,$username)=@_;
10314: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10315: return "$num1:$num2";
10316: }
10317:
10318: sub rndseed_CODE_64bit {
10319: my ($symb,$courseid,$domain,$username)=@_;
10320: {
10321: use integer;
10322: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10323: my $symbseed=numval2($symb);
10324: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10325: my $CODEseed=numval(&getCODE());
10326: my $courseseed=unpack("%32S*",$courseid.' ');
10327: my $num1=$symbseed+$CODEchck;
10328: my $num2=$CODEseed+$courseseed+$symbchck;
10329: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10330: #&logthis("rndseed :$num1:$num2:$symb");
10331: if ($_64bit) { $num1=(($num1<<32)>>32); }
10332: if ($_64bit) { $num2=(($num2<<32)>>32); }
10333: return "$num1:$num2";
10334: }
10335: }
10336:
10337: sub rndseed_CODE_64bit4 {
10338: my ($symb,$courseid,$domain,$username)=@_;
10339: {
10340: use integer;
10341: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10342: my $symbseed=numval3($symb);
10343: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10344: my $CODEseed=numval3(&getCODE());
10345: my $courseseed=unpack("%32S*",$courseid.' ');
10346: my $num1=$symbseed+$CODEchck;
10347: my $num2=$CODEseed+$courseseed+$symbchck;
10348: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10349: #&logthis("rndseed :$num1:$num2:$symb");
10350: if ($_64bit) { $num1=(($num1<<32)>>32); }
10351: if ($_64bit) { $num2=(($num2<<32)>>32); }
10352: return "$num1:$num2";
10353: }
10354: }
10355:
10356: sub rndseed_CODE_64bit5 {
10357: my ($symb,$courseid,$domain,$username)=@_;
10358: my $code = &getCODE();
10359: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10360: return "$num1:$num2";
10361: }
10362:
10363: sub setup_random_from_rndseed {
10364: my ($rndseed)=@_;
10365: if ($rndseed =~/([,:])/) {
10366: my ($num1,$num2)=split(/[,:]/,$rndseed);
10367: &Math::Random::random_set_seed(abs($num1),abs($num2));
10368: } else {
10369: &Math::Random::random_set_seed_from_phrase($rndseed);
10370: }
10371: }
10372:
10373: sub latest_receipt_algorithm_id {
10374: return 'receipt3';
10375: }
10376:
10377: sub recunique {
10378: my $fucourseid=shift;
10379: my $unique;
10380: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10381: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10382: $unique=$env{"course.$fucourseid.internal.encseed"};
10383: } else {
10384: $unique=$perlvar{'lonReceipt'};
10385: }
10386: return unpack("%32C*",$unique);
10387: }
10388:
10389: sub recprefix {
10390: my $fucourseid=shift;
10391: my $prefix;
10392: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10393: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10394: $prefix=$env{"course.$fucourseid.internal.encpref"};
10395: } else {
10396: $prefix=$perlvar{'lonHostID'};
10397: }
10398: return unpack("%32C*",$prefix);
10399: }
10400:
10401: sub ireceipt {
10402: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10403:
10404: my $return =&recprefix($fucourseid).'-';
10405:
10406: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10407: $env{'request.state'} eq 'construct') {
10408: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10409: return $return;
10410: }
10411:
10412: my $cuname=unpack("%32C*",$funame);
10413: my $cudom=unpack("%32C*",$fudom);
10414: my $cucourseid=unpack("%32C*",$fucourseid);
10415: my $cusymb=unpack("%32C*",$fusymb);
10416: my $cunique=&recunique($fucourseid);
10417: my $cpart=unpack("%32S*",$part);
10418: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10419:
10420: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10421:
10422: $return.= ($cunique%$cuname+
10423: $cunique%$cudom+
10424: $cusymb%$cuname+
10425: $cusymb%$cudom+
10426: $cucourseid%$cuname+
10427: $cucourseid%$cudom+
10428: $cpart%$cuname+
10429: $cpart%$cudom);
10430: } else {
10431: $return.= ($cunique%$cuname+
10432: $cunique%$cudom+
10433: $cusymb%$cuname+
10434: $cusymb%$cudom+
10435: $cucourseid%$cuname+
10436: $cucourseid%$cudom);
10437: }
10438: return $return;
10439: }
10440:
10441: sub receipt {
10442: my ($part)=@_;
10443: my ($symb,$courseid,$domain,$name) = &whichuser();
10444: return &ireceipt($name,$domain,$courseid,$symb,$part);
10445: }
10446:
10447: sub whichuser {
10448: my ($passedsymb)=@_;
10449: my ($symb,$courseid,$domain,$name,$publicuser);
10450: if (defined($env{'form.grade_symb'})) {
10451: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10452: my $allowed=&allowed('vgr',$tmp_courseid);
10453: if (!$allowed &&
10454: exists($env{'request.course.sec'}) &&
10455: $env{'request.course.sec'} !~ /^\s*$/) {
10456: $allowed=&allowed('vgr',$tmp_courseid.
10457: '/'.$env{'request.course.sec'});
10458: }
10459: if ($allowed) {
10460: ($symb)=&get_env_multiple('form.grade_symb');
10461: $courseid=$tmp_courseid;
10462: ($domain)=&get_env_multiple('form.grade_domain');
10463: ($name)=&get_env_multiple('form.grade_username');
10464: return ($symb,$courseid,$domain,$name,$publicuser);
10465: }
10466: }
10467: if (!$passedsymb) {
10468: $symb=&symbread();
10469: } else {
10470: $symb=$passedsymb;
10471: }
10472: $courseid=$env{'request.course.id'};
10473: $domain=$env{'user.domain'};
10474: $name=$env{'user.name'};
10475: if ($name eq 'public' && $domain eq 'public') {
10476: if (!defined($env{'form.username'})) {
10477: $env{'form.username'}.=time.rand(10000000);
10478: }
10479: $name.=$env{'form.username'};
10480: }
10481: return ($symb,$courseid,$domain,$name,$publicuser);
10482:
10483: }
10484:
10485: # ------------------------------------------------------------ Serves up a file
10486: # returns either the contents of the file or
10487: # -1 if the file doesn't exist
10488: #
10489: # if the target is a file that was uploaded via DOCS,
10490: # a check will be made to see if a current copy exists on the local server,
10491: # if it does this will be served, otherwise a copy will be retrieved from
10492: # the home server for the course and stored in /home/httpd/html/userfiles on
10493: # the local server.
10494:
10495: sub getfile {
10496: my ($file) = @_;
10497: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10498: &repcopy($file);
10499: return &readfile($file);
10500: }
10501:
10502: sub repcopy_userfile {
10503: my ($file)=@_;
10504: my $londocroot = $perlvar{'lonDocRoot'};
10505: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10506: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10507: my ($cdom,$cnum,$filename) =
10508: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10509: my $uri="/uploaded/$cdom/$cnum/$filename";
10510: if (-e "$file") {
10511: # we already have a local copy, check it out
10512: my @fileinfo = stat($file);
10513: my $rtncode;
10514: my $info;
10515: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
10516: if ($lwpresp ne 'ok') {
10517: # there is no such file anymore, even though we had a local copy
10518: if ($rtncode eq '404') {
10519: unlink($file);
10520: }
10521: return -1;
10522: }
10523: if ($info < $fileinfo[9]) {
10524: # nice, the file we have is up-to-date, just say okay
10525: return 'ok';
10526: } else {
10527: # the file is outdated, get rid of it
10528: unlink($file);
10529: }
10530: }
10531: # one way or the other, at this point, we don't have the file
10532: # construct the correct path for the file
10533: my @parts = ($cdom,$cnum);
10534: if ($filename =~ m|^(.+)/[^/]+$|) {
10535: push @parts, split(/\//,$1);
10536: }
10537: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
10538: foreach my $part (@parts) {
10539: $path .= '/'.$part;
10540: if (!-e $path) {
10541: mkdir($path,0770);
10542: }
10543: }
10544: # now the path exists for sure
10545: # get a user agent
10546: my $ua=new LWP::UserAgent;
10547: my $transferfile=$file.'.in.transfer';
10548: # FIXME: this should flock
10549: if (-e $transferfile) { return 'ok'; }
10550: my $request;
10551: $uri=~s/^\///;
10552: my $homeserver = &homeserver($cnum,$cdom);
10553: my $protocol = $protocol{$homeserver};
10554: $protocol = 'http' if ($protocol ne 'https');
10555: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
10556: my $response=$ua->request($request,$transferfile);
10557: # did it work?
10558: if ($response->is_error()) {
10559: unlink($transferfile);
10560: &logthis("Userfile repcopy failed for $uri");
10561: return -1;
10562: }
10563: # worked, rename the transfer file
10564: rename($transferfile,$file);
10565: return 'ok';
10566: }
10567:
10568: sub tokenwrapper {
10569: my $uri=shift;
10570: $uri=~s|^https?\://([^/]+)||;
10571: $uri=~s|^/||;
10572: $env{'user.environment'}=~/\/([^\/]+)\.id/;
10573: my $token=$1;
10574: my (undef,$udom,$uname,$file)=split('/',$uri,4);
10575: if ($udom && $uname && $file) {
10576: $file=~s|(\?\.*)*$||;
10577: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
10578: my $homeserver = &homeserver($uname,$udom);
10579: my $protocol = $protocol{$homeserver};
10580: $protocol = 'http' if ($protocol ne 'https');
10581: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
10582: (($uri=~/\?/)?'&':'?').'token='.$token.
10583: '&tokenissued='.$perlvar{'lonHostID'};
10584: } else {
10585: return '/adm/notfound.html';
10586: }
10587: }
10588:
10589: # call with reqtype HEAD: get last modification time
10590: # call with reqtype GET: get the file contents
10591: # Do not call this with reqtype GET for large files! It loads everything into memory
10592: #
10593: sub getuploaded {
10594: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
10595: $uri=~s/^\///;
10596: my $homeserver = &homeserver($cnum,$cdom);
10597: my $protocol = $protocol{$homeserver};
10598: $protocol = 'http' if ($protocol ne 'https');
10599: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
10600: my $ua=new LWP::UserAgent;
10601: my $request=new HTTP::Request($reqtype,$uri);
10602: my $response=$ua->request($request);
10603: $$rtncode = $response->code;
10604: if (! $response->is_success()) {
10605: return 'failed';
10606: }
10607: if ($reqtype eq 'HEAD') {
10608: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
10609: } elsif ($reqtype eq 'GET') {
10610: $$info = $response->content;
10611: }
10612: return 'ok';
10613: }
10614:
10615: sub readfile {
10616: my $file = shift;
10617: if ( (! -e $file ) || ($file eq '') ) { return -1; };
10618: my $fh;
10619: open($fh,"<$file");
10620: my $a='';
10621: while (my $line = <$fh>) { $a .= $line; }
10622: return $a;
10623: }
10624:
10625: sub filelocation {
10626: my ($dir,$file) = @_;
10627: my $location;
10628: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
10629:
10630: if ($file =~ m-^/adm/-) {
10631: $file=~s-^/adm/wrapper/-/-;
10632: $file=~s-^/adm/coursedocs/showdoc/-/-;
10633: }
10634:
10635: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
10636: $location = $file;
10637: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
10638: my ($udom,$uname,$filename)=
10639: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
10640: my $home=&homeserver($uname,$udom);
10641: my $is_me=0;
10642: my @ids=¤t_machine_ids();
10643: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
10644: if ($is_me) {
10645: $location=propath($udom,$uname).'/userfiles/'.$filename;
10646: } else {
10647: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
10648: $udom.'/'.$uname.'/'.$filename;
10649: }
10650: } elsif ($file =~ m-^/adm/-) {
10651: $location = $perlvar{'lonDocRoot'}.'/'.$file;
10652: } else {
10653: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10654: $file=~s:^/(res|priv)/:/:;
10655: my $space=$1;
10656: if ( !( $file =~ m:^/:) ) {
10657: $location = $dir. '/'.$file;
10658: } else {
10659: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
10660: }
10661: }
10662: $location=~s://+:/:g; # remove duplicate /
10663: while ($location=~m{/\.\./}) {
10664: if ($location =~ m{/[^/]+/\.\./}) {
10665: $location=~ s{/[^/]+/\.\./}{/}g;
10666: } else {
10667: $location=~ s{/\.\./}{/}g;
10668: }
10669: } #remove dir/..
10670: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
10671: return $location;
10672: }
10673:
10674: sub hreflocation {
10675: my ($dir,$file)=@_;
10676: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
10677: $file=filelocation($dir,$file);
10678: } elsif ($file=~m-^/adm/-) {
10679: $file=~s-^/adm/wrapper/-/-;
10680: $file=~s-^/adm/coursedocs/showdoc/-/-;
10681: }
10682: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
10683: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
10684: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
10685: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
10686: {/uploaded/$1/$2/}x;
10687: }
10688: if ($file=~ m{^/userfiles/}) {
10689: $file =~ s{^/userfiles/}{/uploaded/};
10690: }
10691: return $file;
10692: }
10693:
10694:
10695:
10696:
10697:
10698: sub current_machine_domains {
10699: return &machine_domains(&hostname($perlvar{'lonHostID'}));
10700: }
10701:
10702: sub machine_domains {
10703: my ($hostname) = @_;
10704: my @domains;
10705: my %hostname = &all_hostnames();
10706: while( my($id, $name) = each(%hostname)) {
10707: # &logthis("-$id-$name-$hostname-");
10708: if ($hostname eq $name) {
10709: push(@domains,&host_domain($id));
10710: }
10711: }
10712: return @domains;
10713: }
10714:
10715: sub current_machine_ids {
10716: return &machine_ids(&hostname($perlvar{'lonHostID'}));
10717: }
10718:
10719: sub machine_ids {
10720: my ($hostname) = @_;
10721: $hostname ||= &hostname($perlvar{'lonHostID'});
10722: my @ids;
10723: my %name_to_host = &all_names();
10724: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
10725: return @{ $name_to_host{$hostname} };
10726: }
10727: return;
10728: }
10729:
10730: sub additional_machine_domains {
10731: my @domains;
10732: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
10733: while( my $line = <$fh>) {
10734: $line =~ s/\s//g;
10735: push(@domains,$line);
10736: }
10737: return @domains;
10738: }
10739:
10740: sub default_login_domain {
10741: my $domain = $perlvar{'lonDefDomain'};
10742: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
10743: foreach my $posdom (¤t_machine_domains(),
10744: &additional_machine_domains()) {
10745: if (lc($posdom) eq lc($testdomain)) {
10746: $domain=$posdom;
10747: last;
10748: }
10749: }
10750: return $domain;
10751: }
10752:
10753: # ------------------------------------------------------------- Declutters URLs
10754:
10755: sub declutter {
10756: my $thisfn=shift;
10757: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10758: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10759: $thisfn=~s/^\///;
10760: $thisfn=~s|^adm/wrapper/||;
10761: $thisfn=~s|^adm/coursedocs/showdoc/||;
10762: $thisfn=~s/^res\///;
10763: $thisfn=~s/^priv\///;
10764: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
10765: $thisfn=~s/\?.+$//;
10766: }
10767: return $thisfn;
10768: }
10769:
10770: # ------------------------------------------------------------- Clutter up URLs
10771:
10772: sub clutter {
10773: my $thisfn='/'.&declutter(shift);
10774: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
10775: || $thisfn =~ m{^/adm/(includes|pages)} ) {
10776: $thisfn='/res'.$thisfn;
10777: }
10778: if ($thisfn !~m|^/adm|) {
10779: if ($thisfn =~ m|^/ext/|) {
10780: $thisfn='/adm/wrapper'.$thisfn;
10781: } else {
10782: my ($ext) = ($thisfn =~ /\.(\w+)$/);
10783: my $embstyle=&Apache::loncommon::fileembstyle($ext);
10784: if ($embstyle eq 'ssi'
10785: || ($embstyle eq 'hdn')
10786: || ($embstyle eq 'rat')
10787: || ($embstyle eq 'prv')
10788: || ($embstyle eq 'ign')) {
10789: #do nothing with these
10790: } elsif (($embstyle eq 'img')
10791: || ($embstyle eq 'emb')
10792: || ($embstyle eq 'wrp')) {
10793: $thisfn='/adm/wrapper'.$thisfn;
10794: } elsif ($embstyle eq 'unk'
10795: && $thisfn!~/\.(sequence|page)$/) {
10796: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
10797: } else {
10798: # &logthis("Got a blank emb style");
10799: }
10800: }
10801: }
10802: return $thisfn;
10803: }
10804:
10805: sub clutter_with_no_wrapper {
10806: my $uri = &clutter(shift);
10807: if ($uri =~ m-^/adm/-) {
10808: $uri =~ s-^/adm/wrapper/-/-;
10809: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
10810: }
10811: return $uri;
10812: }
10813:
10814: sub freeze_escape {
10815: my ($value)=@_;
10816: if (ref($value)) {
10817: $value=&nfreeze($value);
10818: return '__FROZEN__'.&escape($value);
10819: }
10820: return &escape($value);
10821: }
10822:
10823:
10824: sub thaw_unescape {
10825: my ($value)=@_;
10826: if ($value =~ /^__FROZEN__/) {
10827: substr($value,0,10,undef);
10828: $value=&unescape($value);
10829: return &thaw($value);
10830: }
10831: return &unescape($value);
10832: }
10833:
10834: sub correct_line_ends {
10835: my ($result)=@_;
10836: $$result =~s/\r\n/\n/mg;
10837: $$result =~s/\r/\n/mg;
10838: }
10839: # ================================================================ Main Program
10840:
10841: sub goodbye {
10842: &logthis("Starting Shut down");
10843: #not converted to using infrastruture and probably shouldn't be
10844: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
10845: #converted
10846: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
10847: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
10848: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
10849: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
10850: #1.1 only
10851: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
10852: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
10853: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
10854: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
10855: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
10856: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
10857: &logthis(sprintf("%-20s is %s",'hits',$hits));
10858: &flushcourselogs();
10859: &logthis("Shutting down");
10860: }
10861:
10862: sub get_dns {
10863: my ($url,$func,$ignore_cache) = @_;
10864: if (!$ignore_cache) {
10865: my ($content,$cached)=
10866: &Apache::lonnet::is_cached_new('dns',$url);
10867: if ($cached) {
10868: &$func($content);
10869: return;
10870: }
10871: }
10872:
10873: my %alldns;
10874: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10875: foreach my $dns (<$config>) {
10876: next if ($dns !~ /^\^(\S*)/x);
10877: my $line = $1;
10878: my ($host,$protocol) = split(/:/,$line);
10879: if ($protocol ne 'https') {
10880: $protocol = 'http';
10881: }
10882: $alldns{$host} = $protocol;
10883: }
10884: while (%alldns) {
10885: my ($dns) = keys(%alldns);
10886: my $ua=new LWP::UserAgent;
10887: $ua->timeout(30);
10888: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10889: my $response=$ua->request($request);
10890: delete($alldns{$dns});
10891: next if ($response->is_error());
10892: my @content = split("\n",$response->content);
10893: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10894: &$func(\@content);
10895: return;
10896: }
10897: close($config);
10898: my $which = (split('/',$url))[3];
10899: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10900: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10901: my @content = <$config>;
10902: &$func(\@content);
10903: return;
10904: }
10905: # ------------------------------------------------------------ Read domain file
10906: {
10907: my $loaded;
10908: my %domain;
10909:
10910: sub parse_domain_tab {
10911: my ($lines) = @_;
10912: foreach my $line (@$lines) {
10913: next if ($line =~ /^(\#|\s*$ )/x);
10914:
10915: chomp($line);
10916: my ($name,@elements) = split(/:/,$line,9);
10917: my %this_domain;
10918: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10919: 'lang_def', 'city', 'longi', 'lati',
10920: 'primary') {
10921: $this_domain{$field} = shift(@elements);
10922: }
10923: $domain{$name} = \%this_domain;
10924: }
10925: }
10926:
10927: sub reset_domain_info {
10928: undef($loaded);
10929: undef(%domain);
10930: }
10931:
10932: sub load_domain_tab {
10933: my ($ignore_cache) = @_;
10934: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10935: my $fh;
10936: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10937: my @lines = <$fh>;
10938: &parse_domain_tab(\@lines);
10939: }
10940: close($fh);
10941: $loaded = 1;
10942: }
10943:
10944: sub domain {
10945: &load_domain_tab() if (!$loaded);
10946:
10947: my ($name,$what) = @_;
10948: return if ( !exists($domain{$name}) );
10949:
10950: if (!$what) {
10951: return $domain{$name}{'description'};
10952: }
10953: return $domain{$name}{$what};
10954: }
10955:
10956: sub domain_info {
10957: &load_domain_tab() if (!$loaded);
10958: return %domain;
10959: }
10960:
10961: }
10962:
10963:
10964: # ------------------------------------------------------------- Read hosts file
10965: {
10966: my %hostname;
10967: my %hostdom;
10968: my %libserv;
10969: my $loaded;
10970: my %name_to_host;
10971: my %internetdom;
10972: my %LC_dns_serv;
10973:
10974: sub parse_hosts_tab {
10975: my ($file) = @_;
10976: foreach my $configline (@$file) {
10977: next if ($configline =~ /^(\#|\s*$ )/x);
10978: chomp($configline);
10979: if ($configline =~ /^\^/) {
10980: if ($configline =~ /^\^([\w.\-]+)/) {
10981: $LC_dns_serv{$1} = 1;
10982: }
10983: next;
10984: }
10985: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10986: $name=~s/\s//g;
10987: if ($id && $domain && $role && $name) {
10988: $hostname{$id}=$name;
10989: push(@{$name_to_host{$name}}, $id);
10990: $hostdom{$id}=$domain;
10991: if ($role eq 'library') { $libserv{$id}=$name; }
10992: if (defined($protocol)) {
10993: if ($protocol eq 'https') {
10994: $protocol{$id} = $protocol;
10995: } else {
10996: $protocol{$id} = 'http';
10997: }
10998: } else {
10999: $protocol{$id} = 'http';
11000: }
11001: if (defined($intdom)) {
11002: $internetdom{$id} = $intdom;
11003: }
11004: }
11005: }
11006: }
11007:
11008: sub reset_hosts_info {
11009: &purge_remembered();
11010: &reset_domain_info();
11011: &reset_hosts_ip_info();
11012: undef(%name_to_host);
11013: undef(%hostname);
11014: undef(%hostdom);
11015: undef(%libserv);
11016: undef($loaded);
11017: }
11018:
11019: sub load_hosts_tab {
11020: my ($ignore_cache) = @_;
11021: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11022: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11023: my @config = <$config>;
11024: &parse_hosts_tab(\@config);
11025: close($config);
11026: $loaded=1;
11027: }
11028:
11029: sub hostname {
11030: &load_hosts_tab() if (!$loaded);
11031:
11032: my ($lonid) = @_;
11033: return $hostname{$lonid};
11034: }
11035:
11036: sub all_hostnames {
11037: &load_hosts_tab() if (!$loaded);
11038:
11039: return %hostname;
11040: }
11041:
11042: sub all_names {
11043: &load_hosts_tab() if (!$loaded);
11044:
11045: return %name_to_host;
11046: }
11047:
11048: sub all_host_domain {
11049: &load_hosts_tab() if (!$loaded);
11050: return %hostdom;
11051: }
11052:
11053: sub is_library {
11054: &load_hosts_tab() if (!$loaded);
11055:
11056: return exists($libserv{$_[0]});
11057: }
11058:
11059: sub all_library {
11060: &load_hosts_tab() if (!$loaded);
11061:
11062: return %libserv;
11063: }
11064:
11065: sub unique_library {
11066: #2x reverse removes all hostnames that appear more than once
11067: my %unique = reverse &all_library();
11068: return reverse %unique;
11069: }
11070:
11071: sub get_servers {
11072: &load_hosts_tab() if (!$loaded);
11073:
11074: my ($domain,$type) = @_;
11075: my %possible_hosts = ($type eq 'library') ? %libserv
11076: : %hostname;
11077: my %result;
11078: if (ref($domain) eq 'ARRAY') {
11079: while ( my ($host,$hostname) = each(%possible_hosts)) {
11080: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11081: $result{$host} = $hostname;
11082: }
11083: }
11084: } else {
11085: while ( my ($host,$hostname) = each(%possible_hosts)) {
11086: if ($hostdom{$host} eq $domain) {
11087: $result{$host} = $hostname;
11088: }
11089: }
11090: }
11091: return %result;
11092: }
11093:
11094: sub get_unique_servers {
11095: my %unique = reverse &get_servers(@_);
11096: return reverse %unique;
11097: }
11098:
11099: sub host_domain {
11100: &load_hosts_tab() if (!$loaded);
11101:
11102: my ($lonid) = @_;
11103: return $hostdom{$lonid};
11104: }
11105:
11106: sub all_domains {
11107: &load_hosts_tab() if (!$loaded);
11108:
11109: my %seen;
11110: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11111: return @uniq;
11112: }
11113:
11114: sub internet_dom {
11115: &load_hosts_tab() if (!$loaded);
11116:
11117: my ($lonid) = @_;
11118: return $internetdom{$lonid};
11119: }
11120:
11121: sub is_LC_dns {
11122: &load_hosts_tab() if (!$loaded);
11123:
11124: my ($hostname) = @_;
11125: return exists($LC_dns_serv{$hostname});
11126: }
11127:
11128: }
11129:
11130: {
11131: my %iphost;
11132: my %name_to_ip;
11133: my %lonid_to_ip;
11134:
11135: sub get_hosts_from_ip {
11136: my ($ip) = @_;
11137: my %iphosts = &get_iphost();
11138: if (ref($iphosts{$ip})) {
11139: return @{$iphosts{$ip}};
11140: }
11141: return;
11142: }
11143:
11144: sub reset_hosts_ip_info {
11145: undef(%iphost);
11146: undef(%name_to_ip);
11147: undef(%lonid_to_ip);
11148: }
11149:
11150: sub get_host_ip {
11151: my ($lonid) = @_;
11152: if (exists($lonid_to_ip{$lonid})) {
11153: return $lonid_to_ip{$lonid};
11154: }
11155: my $name=&hostname($lonid);
11156: my $ip = gethostbyname($name);
11157: return if (!$ip || length($ip) ne 4);
11158: $ip=inet_ntoa($ip);
11159: $name_to_ip{$name} = $ip;
11160: $lonid_to_ip{$lonid} = $ip;
11161: return $ip;
11162: }
11163:
11164: sub get_iphost {
11165: my ($ignore_cache) = @_;
11166:
11167: if (!$ignore_cache) {
11168: if (%iphost) {
11169: return %iphost;
11170: }
11171: my ($ip_info,$cached)=
11172: &Apache::lonnet::is_cached_new('iphost','iphost');
11173: if ($cached) {
11174: %iphost = %{$ip_info->[0]};
11175: %name_to_ip = %{$ip_info->[1]};
11176: %lonid_to_ip = %{$ip_info->[2]};
11177: return %iphost;
11178: }
11179: }
11180:
11181: # get yesterday's info for fallback
11182: my %old_name_to_ip;
11183: my ($ip_info,$cached)=
11184: &Apache::lonnet::is_cached_new('iphost','iphost');
11185: if ($cached) {
11186: %old_name_to_ip = %{$ip_info->[1]};
11187: }
11188:
11189: my %name_to_host = &all_names();
11190: foreach my $name (keys(%name_to_host)) {
11191: my $ip;
11192: if (!exists($name_to_ip{$name})) {
11193: $ip = gethostbyname($name);
11194: if (!$ip || length($ip) ne 4) {
11195: if (defined($old_name_to_ip{$name})) {
11196: $ip = $old_name_to_ip{$name};
11197: &logthis("Can't find $name defaulting to old $ip");
11198: } else {
11199: &logthis("Name $name no IP found");
11200: next;
11201: }
11202: } else {
11203: $ip=inet_ntoa($ip);
11204: }
11205: $name_to_ip{$name} = $ip;
11206: } else {
11207: $ip = $name_to_ip{$name};
11208: }
11209: foreach my $id (@{ $name_to_host{$name} }) {
11210: $lonid_to_ip{$id} = $ip;
11211: }
11212: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11213: }
11214: &Apache::lonnet::do_cache_new('iphost','iphost',
11215: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11216: 48*60*60);
11217:
11218: return %iphost;
11219: }
11220:
11221: #
11222: # Given a DNS returns the loncapa host name for that DNS
11223: #
11224: sub host_from_dns {
11225: my ($dns) = @_;
11226: my @hosts;
11227: my $ip;
11228:
11229: if (exists($name_to_ip{$dns})) {
11230: $ip = $name_to_ip{$dns};
11231: }
11232: if (!$ip) {
11233: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11234: if (length($ip) == 4) {
11235: $ip = &IO::Socket::inet_ntoa($ip);
11236: }
11237: }
11238: if ($ip) {
11239: @hosts = get_hosts_from_ip($ip);
11240: return $hosts[0];
11241: }
11242: return undef;
11243: }
11244:
11245: sub get_internet_names {
11246: my ($lonid) = @_;
11247: return if ($lonid eq '');
11248: my ($idnref,$cached)=
11249: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11250: if ($cached) {
11251: return $idnref;
11252: }
11253: my $ip = &get_host_ip($lonid);
11254: my @hosts = &get_hosts_from_ip($ip);
11255: my %iphost = &get_iphost();
11256: my (@idns,%seen);
11257: foreach my $id (@hosts) {
11258: my $dom = &host_domain($id);
11259: my $prim_id = &domain($dom,'primary');
11260: my $prim_ip = &get_host_ip($prim_id);
11261: next if ($seen{$prim_ip});
11262: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11263: foreach my $id (@{$iphost{$prim_ip}}) {
11264: my $intdom = &internet_dom($id);
11265: unless (grep(/^\Q$intdom\E$/,@idns)) {
11266: push(@idns,$intdom);
11267: }
11268: }
11269: }
11270: $seen{$prim_ip} = 1;
11271: }
11272: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11273: }
11274:
11275: }
11276:
11277: sub all_loncaparevs {
11278: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11279: }
11280:
11281: BEGIN {
11282:
11283: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11284: unless ($readit) {
11285: {
11286: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11287: %perlvar = (%perlvar,%{$configvars});
11288: }
11289:
11290:
11291: # ------------------------------------------------------ Read spare server file
11292: {
11293: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11294:
11295: while (my $configline=<$config>) {
11296: chomp($configline);
11297: if ($configline) {
11298: my ($host,$type) = split(':',$configline,2);
11299: if (!defined($type) || $type eq '') { $type = 'default' };
11300: push(@{ $spareid{$type} }, $host);
11301: }
11302: }
11303: close($config);
11304: }
11305: # ------------------------------------------------------------ Read permissions
11306: {
11307: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11308:
11309: while (my $configline=<$config>) {
11310: chomp($configline);
11311: if ($configline) {
11312: my ($role,$perm)=split(/ /,$configline);
11313: if ($perm ne '') { $pr{$role}=$perm; }
11314: }
11315: }
11316: close($config);
11317: }
11318:
11319: # -------------------------------------------- Read plain texts for permissions
11320: {
11321: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11322:
11323: while (my $configline=<$config>) {
11324: chomp($configline);
11325: if ($configline) {
11326: my ($short,@plain)=split(/:/,$configline);
11327: %{$prp{$short}} = ();
11328: if (@plain > 0) {
11329: $prp{$short}{'std'} = $plain[0];
11330: for (my $i=1; $i<@plain; $i++) {
11331: $prp{$short}{'alt'.$i} = $plain[$i];
11332: }
11333: }
11334: }
11335: }
11336: close($config);
11337: }
11338:
11339: # ---------------------------------------------------------- Read package table
11340: {
11341: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11342:
11343: while (my $configline=<$config>) {
11344: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11345: chomp($configline);
11346: my ($short,$plain)=split(/:/,$configline);
11347: my ($pack,$name)=split(/\&/,$short);
11348: if ($plain ne '') {
11349: $packagetab{$pack.'&'.$name.'&name'}=$name;
11350: $packagetab{$short}=$plain;
11351: }
11352: }
11353: close($config);
11354: }
11355:
11356: # ---------------------------------------------------------- Read loncaparev table
11357: {
11358: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11359: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11360: while (my $configline=<$config>) {
11361: chomp($configline);
11362: my ($hostid,$loncaparev)=split(/:/,$configline);
11363: $loncaparevs{$hostid}=$loncaparev;
11364: }
11365: close($config);
11366: }
11367: }
11368: }
11369:
11370: # ---------------------------------------------------------- Read serverhostID table
11371: {
11372: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11373: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11374: while (my $configline=<$config>) {
11375: chomp($configline);
11376: my ($name,$id)=split(/:/,$configline);
11377: $serverhomeIDs{$name}=$id;
11378: }
11379: close($config);
11380: }
11381: }
11382: }
11383:
11384: {
11385: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11386: if (-e $file) {
11387: my $parser = HTML::LCParser->new($file);
11388: while (my $token = $parser->get_token()) {
11389: if ($token->[0] eq 'S') {
11390: my $item = $token->[1];
11391: my $name = $token->[2]{'name'};
11392: my $value = $token->[2]{'value'};
11393: if ($item ne '' && $name ne '' && $value ne '') {
11394: my $release = $parser->get_text();
11395: $release =~ s/(^\s*|\s*$ )//gx;
11396: $needsrelease{$item.':'.$name.':'.$value} = $release;
11397: }
11398: }
11399: }
11400: }
11401: }
11402:
11403: # ---------------------------------------------------------- Read managers table
11404: {
11405: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11406: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11407: while (my $configline=<$config>) {
11408: chomp($configline);
11409: next if ($configline =~ /^\#/);
11410: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11411: $managerstab{$configline} = 1;
11412: }
11413: }
11414: close($config);
11415: }
11416: }
11417: }
11418:
11419: # ------------- set up temporary directory
11420: {
11421: $tmpdir = LONCAPA::tempdir();
11422:
11423: }
11424:
11425: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11426: 'compress_threshold'=> 20_000,
11427: });
11428:
11429: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11430: $dumpcount=0;
11431: $locknum=0;
11432:
11433: &logtouch();
11434: &logthis('<font color="yellow">INFO: Read configuration</font>');
11435: $readit=1;
11436: {
11437: use integer;
11438: my $test=(2**32)+1;
11439: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11440: &logthis(" Detected 64bit platform ($_64bit)");
11441: }
11442: }
11443: }
11444:
11445: 1;
11446: __END__
11447:
11448: =pod
11449:
11450: =head1 NAME
11451:
11452: Apache::lonnet - Subroutines to ask questions about things in the network.
11453:
11454: =head1 SYNOPSIS
11455:
11456: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11457:
11458: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11459:
11460: Common parameters:
11461:
11462: =over 4
11463:
11464: =item *
11465:
11466: $uname : an internal username (if $cname expecting a course Id specifically)
11467:
11468: =item *
11469:
11470: $udom : a domain (if $cdom expecting a course's domain specifically)
11471:
11472: =item *
11473:
11474: $symb : a resource instance identifier
11475:
11476: =item *
11477:
11478: $namespace : the name of a .db file that contains the data needed or
11479: being set.
11480:
11481: =back
11482:
11483: =head1 OVERVIEW
11484:
11485: lonnet provides subroutines which interact with the
11486: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11487: about classes, users, and resources.
11488:
11489: For many of these objects you can also use this to store data about
11490: them or modify them in various ways.
11491:
11492: =head2 Symbs
11493:
11494: To identify a specific instance of a resource, LON-CAPA uses symbols
11495: or "symbs"X<symb>. These identifiers are built from the URL of the
11496: map, the resource number of the resource in the map, and the URL of
11497: the resource itself. The latter is somewhat redundant, but might help
11498: if maps change.
11499:
11500: An example is
11501:
11502: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11503:
11504: The respective map entry is
11505:
11506: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11507: title="Problem 2">
11508: </resource>
11509:
11510: Symbs are used by the random number generator, as well as to store and
11511: restore data specific to a certain instance of for example a problem.
11512:
11513: =head2 Storing And Retrieving Data
11514:
11515: X<store()>X<cstore()>X<restore()>Three of the most important functions
11516: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
11517: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
11518: is is the non-critical message twin of cstore. These functions are for
11519: handlers to store a perl hash to a user's permanent data space in an
11520: easy manner, and to retrieve it again on another call. It is expected
11521: that a handler would use this once at the beginning to retrieve data,
11522: and then again once at the end to send only the new data back.
11523:
11524: The data is stored in the user's data directory on the user's
11525: homeserver under the ID of the course.
11526:
11527: The hash that is returned by restore will have all of the previous
11528: value for all of the elements of the hash.
11529:
11530: Example:
11531:
11532: #creating a hash
11533: my %hash;
11534: $hash{'foo'}='bar';
11535:
11536: #storing it
11537: &Apache::lonnet::cstore(\%hash);
11538:
11539: #changing a value
11540: $hash{'foo'}='notbar';
11541:
11542: #adding a new value
11543: $hash{'bar'}='foo';
11544: &Apache::lonnet::cstore(\%hash);
11545:
11546: #retrieving the hash
11547: my %history=&Apache::lonnet::restore();
11548:
11549: #print the hash
11550: foreach my $key (sort(keys(%history))) {
11551: print("\%history{$key} = $history{$key}");
11552: }
11553:
11554: Will print out:
11555:
11556: %history{1:foo} = bar
11557: %history{1:keys} = foo:timestamp
11558: %history{1:timestamp} = 990455579
11559: %history{2:bar} = foo
11560: %history{2:foo} = notbar
11561: %history{2:keys} = foo:bar:timestamp
11562: %history{2:timestamp} = 990455580
11563: %history{bar} = foo
11564: %history{foo} = notbar
11565: %history{timestamp} = 990455580
11566: %history{version} = 2
11567:
11568: Note that the special hash entries C<keys>, C<version> and
11569: C<timestamp> were added to the hash. C<version> will be equal to the
11570: total number of versions of the data that have been stored. The
11571: C<timestamp> attribute will be the UNIX time the hash was
11572: stored. C<keys> is available in every historical section to list which
11573: keys were added or changed at a specific historical revision of a
11574: hash.
11575:
11576: B<Warning>: do not store the hash that restore returns directly. This
11577: will cause a mess since it will restore the historical keys as if the
11578: were new keys. I.E. 1:foo will become 1:1:foo etc.
11579:
11580: Calling convention:
11581:
11582: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
11583: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
11584:
11585: For more detailed information, see lonnet specific documentation.
11586:
11587: =head1 RETURN MESSAGES
11588:
11589: =over 4
11590:
11591: =item * B<con_lost>: unable to contact remote host
11592:
11593: =item * B<con_delayed>: unable to contact remote host, message will be delivered
11594: when the connection is brought back up
11595:
11596: =item * B<con_failed>: unable to contact remote host and unable to save message
11597: for later delivery
11598:
11599: =item * B<error:>: an error a occurred, a description of the error follows the :
11600:
11601: =item * B<no_such_host>: unable to fund a host associated with the user/domain
11602: that was requested
11603:
11604: =back
11605:
11606: =head1 PUBLIC SUBROUTINES
11607:
11608: =head2 Session Environment Functions
11609:
11610: =over 4
11611:
11612: =item *
11613: X<appenv()>
11614: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
11615: the user envirnoment file, and will be restored for each access this
11616: user makes during this session, also modifies the %env for the current
11617: process. Optional rolesarrayref - if defined contains a reference to an array
11618: of roles which are exempt from the restriction on modifying user.role entries
11619: in the user's environment.db and in %env.
11620:
11621: =item *
11622: X<delenv()>
11623: B<delenv($delthis,$regexp)>: removes all items from the session
11624: environment file that begin with $delthis. If the
11625: optional second arg - $regexp - is true, $delthis is treated as a
11626: regular expression, otherwise \Q$delthis\E is used.
11627: The values are also deleted from the current processes %env.
11628:
11629: =item * get_env_multiple($name)
11630:
11631: gets $name from the %env hash, it seemlessly handles the cases where multiple
11632: values may be defined and end up as an array ref.
11633:
11634: returns an array of values
11635:
11636: =back
11637:
11638: =head2 User Information
11639:
11640: =over 4
11641:
11642: =item *
11643: X<queryauthenticate()>
11644: B<queryauthenticate($uname,$udom)>: try to determine user's current
11645: authentication scheme
11646:
11647: =item *
11648: X<authenticate()>
11649: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
11650: authenticate user from domain's lib servers (first use the current
11651: one). C<$upass> should be the users password.
11652: $checkdefauth is optional (value is 1 if a check should be made to
11653: authenticate user using default authentication method, and allow
11654: account creation if username does not have account in the domain).
11655: $clientcancheckhost is optional (value is 1 if checking whether the
11656: server can host will occur on the client side in lonauth.pm).
11657:
11658: =item *
11659: X<homeserver()>
11660: B<homeserver($uname,$udom)>: find the server which has
11661: the user's directory and files (there must be only one), this caches
11662: the answer, and also caches if there is a borken connection.
11663:
11664: =item *
11665: X<idget()>
11666: B<idget($udom,@ids)>: find the usernames behind a list of IDs
11667: (IDs are a unique resource in a domain, there must be only 1 ID per
11668: username, and only 1 username per ID in a specific domain) (returns
11669: hash: id=>name,id=>name)
11670:
11671: =item *
11672: X<idrget()>
11673: B<idrget($udom,@unames)>: find the IDs behind a list of
11674: usernames (returns hash: name=>id,name=>id)
11675:
11676: =item *
11677: X<idput()>
11678: B<idput($udom,%ids)>: store away a list of names and associated IDs
11679:
11680: =item *
11681: X<rolesinit()>
11682: B<rolesinit($udom,$username)>: get user privileges.
11683: returns user role, first access and timer interval hashes
11684:
11685: =item *
11686: X<privileged()>
11687: B<privileged($username,$domain)>: returns a true if user has a
11688: privileged and active role (i.e. su or dc), false otherwise.
11689:
11690: =item *
11691: X<getsection()>
11692: B<getsection($udom,$uname,$cname)>: finds the section of student in the
11693: course $cname, return section name/number or '' for "not in course"
11694: and '-1' for "no section"
11695:
11696: =item *
11697: X<userenvironment()>
11698: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
11699: passed in @what from the requested user's environment, returns a hash
11700:
11701: =item *
11702: X<userlog_query()>
11703: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
11704: activity.log file. %filters defines filters applied when parsing the
11705: log file. These can be start or end timestamps, or the type of action
11706: - log to look for Login or Logout events, check for Checkin or
11707: Checkout, role for role selection. The response is in the form
11708: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
11709: escaped strings of the action recorded in the activity.log file.
11710:
11711: =back
11712:
11713: =head2 User Roles
11714:
11715: =over 4
11716:
11717: =item *
11718:
11719: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
11720: F: full access
11721: U,I,K: authentication modes (cxx only)
11722: '': forbidden
11723: 1: user needs to choose course
11724: 2: browse allowed
11725: A: passphrase authentication needed
11726:
11727: =item *
11728:
11729: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
11730: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
11731: and course level
11732:
11733: =item *
11734:
11735: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
11736: (rolesplain.tab); plain text explanation of a user role term.
11737: $type is Course (default) or Community.
11738: If $forcedefault evaluates to true, text returned will be default
11739: text for $type. Otherwise, if this is a course, the text returned
11740: will be a custom name for the role (if defined in the course's
11741: environment). If no custom name is defined the default is returned.
11742:
11743: =item *
11744:
11745: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
11746: All arguments are optional. Returns a hash of a roles, either for
11747: co-author/assistant author roles for a user's Construction Space
11748: (default), or if $context is 'userroles', roles for the user himself,
11749: In the hash, keys are set to colon-separated $uname,$udom,$role, and
11750: (optionally) if $withsec is true, a fourth colon-separated item - $section.
11751: For each key, value is set to colon-separated start and end times for
11752: the role. If no username and domain are specified, will default to
11753: current user/domain. Types, roles, and roledoms are references to arrays
11754: of role statuses (active, future or previous), roles
11755: (e.g., cc,in, st etc.) and domains of the roles which can be used
11756: to restrict the list of roles reported. If no array ref is
11757: provided for types, will default to return only active roles.
11758:
11759: =back
11760:
11761: =head2 User Modification
11762:
11763: =over 4
11764:
11765: =item *
11766:
11767: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
11768: user for the level given by URL. Optional start and end dates (leave empty
11769: string or zero for "no date")
11770:
11771: =item *
11772:
11773: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
11774: change a users, password, possible return values are: ok,
11775: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
11776: refused
11777:
11778: =item *
11779:
11780: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
11781:
11782: =item *
11783:
11784: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
11785: $forceid,$desiredhome,$email,$inststatus,$candelete) :
11786:
11787: will update user information (firstname,middlename,lastname,generation,
11788: permanentemail), and if forceid is true, student/employee ID also.
11789: A user's institutional affiliation(s) can also be updated.
11790: User information fields will not be overwritten with empty entries
11791: unless the field is included in the $candelete array reference.
11792: This array is included when a single user is modified via "Manage Users",
11793: or when Autoupdate.pl is run by cron in a domain.
11794:
11795: =item *
11796:
11797: modifystudent
11798:
11799: modify a student's enrollment and identification information.
11800: The course id is resolved based on the current users environment.
11801: This means the envoking user must be a course coordinator or otherwise
11802: associated with a course.
11803:
11804: This call is essentially a wrapper for lonnet::modifyuser and
11805: lonnet::modify_student_enrollment
11806:
11807: Inputs:
11808:
11809: =over 4
11810:
11811: =item B<$udom> Student's loncapa domain
11812:
11813: =item B<$uname> Student's loncapa login name
11814:
11815: =item B<$uid> Student/Employee ID
11816:
11817: =item B<$umode> Student's authentication mode
11818:
11819: =item B<$upass> Student's password
11820:
11821: =item B<$first> Student's first name
11822:
11823: =item B<$middle> Student's middle name
11824:
11825: =item B<$last> Student's last name
11826:
11827: =item B<$gene> Student's generation
11828:
11829: =item B<$usec> Student's section in course
11830:
11831: =item B<$end> Unix time of the roles expiration
11832:
11833: =item B<$start> Unix time of the roles start date
11834:
11835: =item B<$forceid> If defined, allow $uid to be changed
11836:
11837: =item B<$desiredhome> server to use as home server for student
11838:
11839: =item B<$email> Student's permanent e-mail address
11840:
11841: =item B<$type> Type of enrollment (auto or manual)
11842:
11843: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
11844:
11845: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
11846:
11847: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
11848:
11849: =item B<$context> role change context (shown in User Management Logs display in a course)
11850:
11851: =item B<$inststatus> institutional status of user - : separated string of escaped status types
11852:
11853: =back
11854:
11855: =item *
11856:
11857: modify_student_enrollment
11858:
11859: Change a students enrollment status in a class. The environment variable
11860: 'role.request.course' must be defined for this function to proceed.
11861:
11862: Inputs:
11863:
11864: =over 4
11865:
11866: =item $udom, students domain
11867:
11868: =item $uname, students name
11869:
11870: =item $uid, students user id
11871:
11872: =item $first, students first name
11873:
11874: =item $middle
11875:
11876: =item $last
11877:
11878: =item $gene
11879:
11880: =item $usec
11881:
11882: =item $end
11883:
11884: =item $start
11885:
11886: =item $type
11887:
11888: =item $locktype
11889:
11890: =item $cid
11891:
11892: =item $selfenroll
11893:
11894: =item $context
11895:
11896: =back
11897:
11898:
11899: =item *
11900:
11901: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11902: custom role; give a custom role to a user for the level given by URL. Specify
11903: name and domain of role author, and role name
11904:
11905: =item *
11906:
11907: revokerole($udom,$uname,$url,$role) : revoke a role for url
11908:
11909: =item *
11910:
11911: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
11912:
11913: =back
11914:
11915: =head2 Course Infomation
11916:
11917: =over 4
11918:
11919: =item *
11920:
11921: coursedescription($courseid,$options) : returns a hash of information about the
11922: specified course id, including all environment settings for the
11923: course, the description of the course will be in the hash under the
11924: key 'description'
11925:
11926: $options is an optional parameter that if supplied is a hash reference that controls
11927: what how this function works. It has the following key/values:
11928:
11929: =over 4
11930:
11931: =item freshen_cache
11932:
11933: If defined, and the environment cache for the course is valid, it is
11934: returned in the returned hash.
11935:
11936: =item one_time
11937:
11938: If defined, the last cache time is set to _now_
11939:
11940: =item user
11941:
11942: If defined, the supplied username is used instead of the current user.
11943:
11944:
11945: =back
11946:
11947: =item *
11948:
11949: resdata($name,$domain,$type,@which) : request for current parameter
11950: setting for a specific $type, where $type is either 'course' or 'user',
11951: @what should be a list of parameters to ask about. This routine caches
11952: answers for 5 minutes.
11953:
11954: =item *
11955:
11956: get_courseresdata($courseid, $domain) : dump the entire course resource
11957: data base, returning a hash that is keyed by the resource name and has
11958: values that are the resource value. I believe that the timestamps and
11959: versions are also returned.
11960:
11961:
11962: =back
11963:
11964: =head2 Course Modification
11965:
11966: =over 4
11967:
11968: =item *
11969:
11970: writecoursepref($courseid,%prefs) : write preferences (environment
11971: database) for a course
11972:
11973: =item *
11974:
11975: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11976:
11977: =item *
11978:
11979: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11980:
11981: =item *
11982:
11983: is_course($courseid), is_course($cdom, $cnum)
11984:
11985: Accepts either a combined $courseid (in the form of domain_courseid) or the
11986: two component version $cdom, $cnum. It checks if the specified course exists.
11987:
11988: Returns:
11989: undef if the course doesn't exist, otherwise
11990: in scalar context the combined courseid.
11991: in list context the two components of the course identifier, domain and
11992: courseid.
11993:
11994: =back
11995:
11996: =head2 Resource Subroutines
11997:
11998: =over 4
11999:
12000: =item *
12001:
12002: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12003:
12004: =item *
12005:
12006: repcopy($filename) : subscribes to the requested file, and attempts to
12007: replicate from the owning library server, Might return
12008: 'unavailable', 'not_found', 'forbidden', 'ok', or
12009: 'bad_request', also attempts to grab the metadata for the
12010: resource. Expects the local filesystem pathname
12011: (/home/httpd/html/res/....)
12012:
12013: =back
12014:
12015: =head2 Resource Information
12016:
12017: =over 4
12018:
12019: =item *
12020:
12021: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12022: a vairety of different possible values, $varname should be a request
12023: string, and the other parameters can be used to specify who and what
12024: one is asking about.
12025:
12026: Possible values for $varname are environment.lastname (or other item
12027: from the envirnment hash), user.name (or someother aspect about the
12028: user), resource.0.maxtries (or some other part and parameter of a
12029: resource)
12030:
12031: =item *
12032:
12033: directcondval($number) : get current value of a condition; reads from a state
12034: string
12035:
12036: =item *
12037:
12038: condval($condidx) : value of condition index based on state
12039:
12040: =item *
12041:
12042: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12043: resource's metadata, $what should be either a specific key, or either
12044: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12045: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12046:
12047: this function automatically caches all requests
12048:
12049: =item *
12050:
12051: metadata_query($query,$custom,$customshow) : make a metadata query against the
12052: network of library servers; returns file handle of where SQL and regex results
12053: will be stored for query
12054:
12055: =item *
12056:
12057: symbread($filename) : return symbolic list entry (filename argument optional);
12058: returns the data handle
12059:
12060: =item *
12061:
12062: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
12063: a possible symb for the URL in $thisfn, and if is an encryypted
12064: resource that the user accessed using /enc/ returns a 1 on success, 0
12065: on failure, user must be in a course, as it assumes the existance of
12066: the course initial hash, and uses $env('request.course.id'}
12067:
12068:
12069: =item *
12070:
12071: symbclean($symb) : removes versions numbers from a symb, returns the
12072: cleaned symb
12073:
12074: =item *
12075:
12076: is_on_map($uri) : checks if the $uri is somewhere on the current
12077: course map, user must be in a course for it to work.
12078:
12079: =item *
12080:
12081: numval($salt) : return random seed value (addend for rndseed)
12082:
12083: =item *
12084:
12085: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12086: a random seed, all arguments are optional, if they aren't sent it uses the
12087: environment to derive them. Note: if symb isn't sent and it can't get one
12088: from &symbread it will use the current time as its return value
12089:
12090: =item *
12091:
12092: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12093: unfakeable, receipt
12094:
12095: =item *
12096:
12097: receipt() : API to ireceipt working off of env values; given out to users
12098:
12099: =item *
12100:
12101: countacc($url) : count the number of accesses to a given URL
12102:
12103: =item *
12104:
12105: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12106:
12107: =item *
12108:
12109: checkin($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 $tcrsid)
12110:
12111: =item *
12112:
12113: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12114:
12115: =item *
12116:
12117: devalidate($symb) : devalidate temporary spreadsheet calculations,
12118: forcing spreadsheet to reevaluate the resource scores next time.
12119:
12120: =back
12121:
12122: =head2 Storing/Retreiving Data
12123:
12124: =over 4
12125:
12126: =item *
12127:
12128: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12129: for this url; hashref needs to be given and should be a \%hashname; the
12130: remaining args aren't required and if they aren't passed or are '' they will
12131: be derived from the env
12132:
12133: =item *
12134:
12135: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12136: uses critical subroutine
12137:
12138: =item *
12139:
12140: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12141: all args are optional
12142:
12143: =item *
12144:
12145: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12146: dumps the complete (or key matching regexp) namespace into a hash
12147: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12148: normally &store()ed into
12149:
12150: $range should be either an integer '100' (give me the first 100
12151: matching records)
12152: or be two integers sperated by a - with no spaces
12153: '30-50' (give me the 30th through the 50th matching
12154: records)
12155:
12156:
12157: =item *
12158:
12159: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12160: replaces a &store() version of data with a replacement set of data
12161: for a particular resource in a namespace passed in the $storehash hash
12162: reference
12163:
12164: =item *
12165:
12166: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12167: works very similar to store/cstore, but all data is stored in a
12168: temporary location and can be reset using tmpreset, $storehash should
12169: be a hash reference, returns nothing on success
12170:
12171: =item *
12172:
12173: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12174: similar to restore, but all data is stored in a temporary location and
12175: can be reset using tmpreset. Returns a hash of values on success,
12176: error string otherwise.
12177:
12178: =item *
12179:
12180: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12181: deltes all keys for $symb form the temporary storage hash.
12182:
12183: =item *
12184:
12185: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12186: reference filled in from namesp ($udom and $uname are optional)
12187:
12188: =item *
12189:
12190: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12191: namesp ($udom and $uname are optional)
12192:
12193: =item *
12194:
12195: dump($namespace,$udom,$uname,$regexp,$range) :
12196: dumps the complete (or key matching regexp) namespace into a hash
12197: ($udom, $uname, $regexp, $range are optional)
12198:
12199: $range should be either an integer '100' (give me the first 100
12200: matching records)
12201: or be two integers sperated by a - with no spaces
12202: '30-50' (give me the 30th through the 50th matching
12203: records)
12204: =item *
12205:
12206: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12207: $store can be a scalar, an array reference, or if the amount to be
12208: incremented is > 1, a hash reference.
12209:
12210: ($udom and $uname are optional)
12211:
12212: =item *
12213:
12214: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12215: ($udom and $uname are optional)
12216:
12217: =item *
12218:
12219: cput($namespace,$storehash,$udom,$uname) : critical put
12220: ($udom and $uname are optional)
12221:
12222: =item *
12223:
12224: newput($namespace,$storehash,$udom,$uname) :
12225:
12226: Attempts to store the items in the $storehash, but only if they don't
12227: currently exist, if this succeeds you can be certain that you have
12228: successfully created a new key value pair in the $namespace db.
12229:
12230:
12231: Args:
12232: $namespace: name of database to store values to
12233: $storehash: hashref to store to the db
12234: $udom: (optional) domain of user containing the db
12235: $uname: (optional) name of user caontaining the db
12236:
12237: Returns:
12238: 'ok' -> succeeded in storing all keys of $storehash
12239: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12240: least <key> already existed in the db (other
12241: requested keys may also already exist)
12242: 'error: <msg>' -> unable to tie the DB or other error occurred
12243: 'con_lost' -> unable to contact request server
12244: 'refused' -> action was not allowed by remote machine
12245:
12246:
12247: =item *
12248:
12249: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12250: reference filled in from namesp (encrypts the return communication)
12251: ($udom and $uname are optional)
12252:
12253: =item *
12254:
12255: log($udom,$name,$home,$message) : write to permanent log for user; use
12256: critical subroutine
12257:
12258: =item *
12259:
12260: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12261: array reference filled in from namespace found in domain level on either
12262: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12263:
12264: =item *
12265:
12266: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12267: domain level either on specified domain server ($uhome) or primary domain
12268: server ($udom and $uhome are optional)
12269:
12270: =item *
12271:
12272: get_domain_defaults($target_domain) : returns hash with defaults for
12273: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12274: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12275: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12276: Values are retrieved from cache (if current), or from domain's configuration.db
12277: (if available), or lastly from values in lonTabs/dns_domain,tab,
12278: or lonTabs/domain.tab.
12279:
12280: %domdefaults = &get_auth_defaults($target_domain);
12281:
12282: =back
12283:
12284: =head2 Network Status Functions
12285:
12286: =over 4
12287:
12288: =item *
12289:
12290: dirlist() : return directory list based on URI (first arg).
12291:
12292: Inputs: 1 required, 5 optional.
12293:
12294: =over
12295:
12296: =item
12297: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12298:
12299: =item
12300: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12301:
12302: =item
12303: $username - username of user/course to be listed. Extracted from $uri if absent.
12304:
12305: =item
12306: $getpropath - boolean: 1 if prepend path using &propath().
12307:
12308: =item
12309: $getuserdir - boolean: 1 if prepend path for "userfiles".
12310:
12311: =item
12312: $alternateRoot - path to prepend in place of path from $uri.
12313:
12314: =back
12315:
12316: Returns: Array of up to two items.
12317:
12318: =over
12319:
12320: a reference to an array of files/subdirectories
12321:
12322: =over
12323:
12324: Each element in the array of files/subdirectories is a & separated list of
12325: item name and the result of running stat on the item. If dirlist was requested
12326: for a file instead of a directory, the item name will be ''. For a directory
12327: listing, if the item is a metadata file, the element will end &N&M
12328: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12329: default copyright set (1).
12330:
12331: =back
12332:
12333: a scalar containing error condition (if encountered).
12334:
12335: =over
12336:
12337: =item
12338: no_host (no homeserver identified for $username:$domain).
12339:
12340: =item
12341: no_such_host (server contacted for listing not identified as valid host).
12342:
12343: =item
12344: con_lost (connection to remote server failed).
12345:
12346: =item
12347: refused (invalid $username:$domain received on lond side).
12348:
12349: =item
12350: no_such_dir (directory at specified path on lond side does not exist).
12351:
12352: =item
12353: empty (directory at specified path on lond side is empty).
12354:
12355: =over
12356:
12357: This is currently not encountered because the &ls3, &ls2,
12358: &ls (_handler) routines on the lond side do not filter out
12359: . and .. from a directory listing.
12360:
12361: =back
12362:
12363: =back
12364:
12365: =back
12366:
12367: =item *
12368:
12369: spareserver() : find server with least workload from spare.tab
12370:
12371:
12372: =item *
12373:
12374: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12375: if there is no corresponding loncapa host.
12376:
12377: =back
12378:
12379:
12380: =head2 Apache Request
12381:
12382: =over 4
12383:
12384: =item *
12385:
12386: ssi($url,%hash) : server side include, does a complete request cycle on url to
12387: localhost, posts hash
12388:
12389: =back
12390:
12391: =head2 Data to String to Data
12392:
12393: =over 4
12394:
12395: =item *
12396:
12397: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12398: and '&' separators, supports elements that are arrayrefs and hashrefs
12399:
12400: =item *
12401:
12402: hashref2str($hashref) : convert a hashref into a string complete with
12403: escaping and '=' and '&' separators, supports elements that are
12404: arrayrefs and hashrefs
12405:
12406: =item *
12407:
12408: arrayref2str($arrayref) : convert an arrayref into a string complete
12409: with escaping and '&' separators, supports elements that are arrayrefs
12410: and hashrefs
12411:
12412: =item *
12413:
12414: str2hash($string) : convert string to hash using unescaping and
12415: splitting on '=' and '&', supports elements that are arrayrefs and
12416: hashrefs
12417:
12418: =item *
12419:
12420: str2array($string) : convert string to hash using unescaping and
12421: splitting on '&', supports elements that are arrayrefs and hashrefs
12422:
12423: =back
12424:
12425: =head2 Logging Routines
12426:
12427:
12428: These routines allow one to make log messages in the lonnet.log and
12429: lonnet.perm logfiles.
12430:
12431: =over 4
12432:
12433: =item *
12434:
12435: logtouch() : make sure the logfile, lonnet.log, exists
12436:
12437: =item *
12438:
12439: logthis() : append message to the normal lonnet.log file, it gets
12440: preiodically rolled over and deleted.
12441:
12442: =item *
12443:
12444: logperm() : append a permanent message to lonnet.perm.log, this log
12445: file never gets deleted by any automated portion of the system, only
12446: messages of critical importance should go in here.
12447:
12448:
12449: =back
12450:
12451: =head2 General File Helper Routines
12452:
12453: =over 4
12454:
12455: =item *
12456:
12457: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
12458: (a) files in /uploaded
12459: (i) If a local copy of the file exists -
12460: compares modification date of local copy with last-modified date for
12461: definitive version stored on home server for course. If local copy is
12462: stale, requests a new version from the home server and stores it.
12463: If the original has been removed from the home server, then local copy
12464: is unlinked.
12465: (ii) If local copy does not exist -
12466: requests the file from the home server and stores it.
12467:
12468: If $caller is 'uploadrep':
12469: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
12470: for request for files originally uploaded via DOCS.
12471: - returns 'ok' if fresh local copy now available, -1 otherwise.
12472:
12473: Otherwise:
12474: This indicates a call from the content generation phase of the request.
12475: - returns the entire contents of the file or -1.
12476:
12477: (b) files in /res
12478: - returns the entire contents of a file or -1;
12479: it properly subscribes to and replicates the file if neccessary.
12480:
12481:
12482: =item *
12483:
12484: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
12485: reference
12486:
12487: returns either a stat() list of data about the file or an empty list
12488: if the file doesn't exist or couldn't find out about it (connection
12489: problems or user unknown)
12490:
12491: =item *
12492:
12493: filelocation($dir,$file) : returns file system location of a file
12494: based on URI; meant to be "fairly clean" absolute reference, $dir is a
12495: directory that relative $file lookups are to looked in ($dir of /a/dir
12496: and a file of ../bob will become /a/bob)
12497:
12498: =item *
12499:
12500: hreflocation($dir,$file) : returns file system location or a URL; same as
12501: filelocation except for hrefs
12502:
12503: =item *
12504:
12505: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
12506:
12507: =back
12508:
12509: =head2 Usererfile file routines (/uploaded*)
12510:
12511: =over 4
12512:
12513: =item *
12514:
12515: userfileupload(): main rotine for putting a file in a user or course's
12516: filespace, arguments are,
12517:
12518: formname - required - this is the name of the element in $env where the
12519: filename, and the contents of the file to create/modifed exist
12520: the filename is in $env{'form.'.$formname.'.filename'} and the
12521: contents of the file is located in $env{'form.'.$formname}
12522: context - if coursedoc, store the file in the course of the active role
12523: of the current user;
12524: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
12525: if 'canceloverwrite': delete file in tmp/overwrites directory
12526: subdir - required - subdirectory to put the file in under ../userfiles/
12527: if undefined, it will be placed in "unknown"
12528:
12529: (This routine calls clean_filename() to remove any dangerous
12530: characters from the filename, and then calls finuserfileupload() to
12531: complete the transaction)
12532:
12533: returns either the url of the uploaded file (/uploaded/....) if successful
12534: and /adm/notfound.html if unsuccessful
12535:
12536: =item *
12537:
12538: clean_filename(): routine for cleaing a filename up for storage in
12539: userfile space, argument is:
12540:
12541: filename - proposed filename
12542:
12543: returns: the new clean filename
12544:
12545: =item *
12546:
12547: finishuserfileupload(): routine that creates and sends the file to
12548: userspace, probably shouldn't be called directly
12549:
12550: docuname: username or courseid of destination for the file
12551: docudom: domain of user/course of destination for the file
12552: formname: same as for userfileupload()
12553: fname: filename (including subdirectories) for the file
12554: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
12555: allfiles: reference to hash used to store objects found by parser
12556: codebase: reference to hash used for codebases of java objects found by parser
12557: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
12558: thumbheight: height (pixels) of thumbnail to be created for uploaded image
12559: resizewidth: width to be used to resize image using resizeImage from ImageMagick
12560: resizeheight: height to be used to resize image using resizeImage from ImageMagick
12561: context: if 'overwrite', will move the uploaded file from its temporary location to
12562: userfiles to facilitate overwriting a previously uploaded file with same name.
12563: mimetype: reference to scalar to accommodate mime type determined
12564: from File::MMagic if $parser = parse.
12565:
12566: returns either the url of the uploaded file (/uploaded/....) if successful
12567: and /adm/notfound.html if unsuccessful (or an error message if context
12568: was 'overwrite').
12569:
12570:
12571: =item *
12572:
12573: renameuserfile(): renames an existing userfile to a new name
12574:
12575: Args:
12576: docuname: username or courseid of destination for the file
12577: docudom: domain of user/course of destination for the file
12578: old: current file name (including any subdirs under userfiles)
12579: new: desired file name (including any subdirs under userfiles)
12580:
12581: =item *
12582:
12583: mkdiruserfile(): creates a directory is a userfiles dir
12584:
12585: Args:
12586: docuname: username or courseid of destination for the file
12587: docudom: domain of user/course of destination for the file
12588: dir: dir to create (including any subdirs under userfiles)
12589:
12590: =item *
12591:
12592: removeuserfile(): removes a file that exists in userfiles
12593:
12594: Args:
12595: docuname: username or courseid of destination for the file
12596: docudom: domain of user/course of destination for the file
12597: fname: filname to delete (including any subdirs under userfiles)
12598:
12599: =item *
12600:
12601: removeuploadedurl(): convience function for removeuserfile()
12602:
12603: Args:
12604: url: a full /uploaded/... url to delete
12605:
12606: =item *
12607:
12608: get_portfile_permissions():
12609: Args:
12610: domain: domain of user or course contain the portfolio files
12611: user: name of user or num of course contain the portfolio files
12612: Returns:
12613: hashref of a dump of the proper file_permissions.db
12614:
12615:
12616: =item *
12617:
12618: get_access_controls():
12619:
12620: Args:
12621: current_permissions: the hash ref returned from get_portfile_permissions()
12622: group: (optional) the group you want the files associated with
12623: file: (optional) the file you want access info on
12624:
12625: Returns:
12626: a hash (keys are file names) of hashes containing
12627: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
12628: values are XML containing access control settings (see below)
12629:
12630: Internal notes:
12631:
12632: access controls are stored in file_permissions.db as key=value pairs.
12633: key -> path to file/file_name\0uniqueID:scope_end_start
12634: where scope -> public,guest,course,group,domains or users.
12635: end -> UNIX time for end of access (0 -> no end date)
12636: start -> UNIX time for start of access
12637:
12638: value -> XML description of access control
12639: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
12640: <start></start>
12641: <end></end>
12642:
12643: <password></password> for scope type = guest
12644:
12645: <domain></domain> for scope type = course or group
12646: <number></number>
12647: <roles id="">
12648: <role></role>
12649: <access></access>
12650: <section></section>
12651: <group></group>
12652: </roles>
12653:
12654: <dom></dom> for scope type = domains
12655:
12656: <users> for scope type = users
12657: <user>
12658: <uname></uname>
12659: <udom></udom>
12660: </user>
12661: </users>
12662: </scope>
12663:
12664: Access data is also aggregated for each file in an additional key=value pair:
12665: key -> path to file/file_name\0accesscontrol
12666: value -> reference to hash
12667: hash contains key = value pairs
12668: where key = uniqueID:scope_end_start
12669: value = UNIX time record was last updated
12670:
12671: Used to improve speed of look-ups of access controls for each file.
12672:
12673: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
12674:
12675: modify_access_controls():
12676:
12677: Modifies access controls for a portfolio file
12678: Args
12679: 1. file name
12680: 2. reference to hash of required changes,
12681: 3. domain
12682: 4. username
12683: where domain,username are the domain of the portfolio owner
12684: (either a user or a course)
12685:
12686: Returns:
12687: 1. result of additions or updates ('ok' or 'error', with error message).
12688: 2. result of deletions ('ok' or 'error', with error message).
12689: 3. reference to hash of any new or updated access controls.
12690: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
12691: key = integer (inbound ID)
12692: value = uniqueID
12693:
12694: =back
12695:
12696: =head2 HTTP Helper Routines
12697:
12698: =over 4
12699:
12700: =item *
12701:
12702: escape() : unpack non-word characters into CGI-compatible hex codes
12703:
12704: =item *
12705:
12706: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
12707:
12708: =back
12709:
12710: =head1 PRIVATE SUBROUTINES
12711:
12712: =head2 Underlying communication routines (Shouldn't call)
12713:
12714: =over 4
12715:
12716: =item *
12717:
12718: subreply() : tries to pass a message to lonc, returns con_lost if incapable
12719:
12720: =item *
12721:
12722: reply() : uses subreply to send a message to remote machine, logs all failures
12723:
12724: =item *
12725:
12726: critical() : passes a critical message to another server; if cannot
12727: get through then place message in connection buffer directory and
12728: returns con_delayed, if incapable of saving message, returns
12729: con_failed
12730:
12731: =item *
12732:
12733: reconlonc() : tries to reconnect lonc client processes.
12734:
12735: =back
12736:
12737: =head2 Resource Access Logging
12738:
12739: =over 4
12740:
12741: =item *
12742:
12743: flushcourselogs() : flush (save) buffer logs and access logs
12744:
12745: =item *
12746:
12747: courselog($what) : save message for course in hash
12748:
12749: =item *
12750:
12751: courseacclog($what) : save message for course using &courselog(). Perform
12752: special processing for specific resource types (problems, exams, quizzes, etc).
12753:
12754: =item *
12755:
12756: goodbye() : flush course logs and log shutting down; it is called in srm.conf
12757: as a PerlChildExitHandler
12758:
12759: =back
12760:
12761: =head2 Other
12762:
12763: =over 4
12764:
12765: =item *
12766:
12767: symblist($mapname,%newhash) : update symbolic storage links
12768:
12769: =back
12770:
12771: =cut
12772:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonnet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / lonnet / perl