1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1089 2010/10/01 16:37:35 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease);
80:
81: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
82: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
83: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
84: %courseownerbuf, %coursetypebuf,$locknum);
85:
86: use IO::Socket;
87: use GDBM_File;
88: use HTML::LCParser;
89: use Fcntl qw(:flock);
90: use Storable qw(thaw nfreeze);
91: use Time::HiRes qw( gettimeofday tv_interval );
92: use Cache::Memcached;
93: use Digest::MD5;
94: use Math::Random;
95: use File::MMagic;
96: use LONCAPA qw(:DEFAULT :match);
97: use LONCAPA::Configuration;
98:
99: my $readit;
100: my $max_connection_retries = 10; # Or some such value.
101:
102: require Exporter;
103:
104: our @ISA = qw (Exporter);
105: our @EXPORT = qw(%env);
106:
107:
108: # --------------------------------------------------------------------- Logging
109: {
110: my $logid;
111: sub instructor_log {
112: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
113: if (($cnum eq '') || ($cdom eq '')) {
114: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
115: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
116: }
117: $logid++;
118: my $now = time();
119: my $id=$now.'00000'.$$.'00000'.$logid;
120: return &Apache::lonnet::put('nohist_'.$hash_name,
121: { $id => {
122: 'exe_uname' => $env{'user.name'},
123: 'exe_udom' => $env{'user.domain'},
124: 'exe_time' => $now,
125: 'exe_ip' => $ENV{'REMOTE_ADDR'},
126: 'delflag' => $delflag,
127: 'logentry' => $storehash,
128: 'uname' => $uname,
129: 'udom' => $udom,
130: }
131: },$cdom,$cnum);
132: }
133: }
134:
135: sub logtouch {
136: my $execdir=$perlvar{'lonDaemons'};
137: unless (-e "$execdir/logs/lonnet.log") {
138: open(my $fh,">>$execdir/logs/lonnet.log");
139: close $fh;
140: }
141: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
142: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
143: }
144:
145: sub logthis {
146: my $message=shift;
147: my $execdir=$perlvar{'lonDaemons'};
148: my $now=time;
149: my $local=localtime($now);
150: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
151: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
152: print $fh $logstring;
153: close($fh);
154: }
155: return 1;
156: }
157:
158: sub logperm {
159: my $message=shift;
160: my $execdir=$perlvar{'lonDaemons'};
161: my $now=time;
162: my $local=localtime($now);
163: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
164: print $fh "$now:$message:$local\n";
165: close($fh);
166: }
167: return 1;
168: }
169:
170: sub create_connection {
171: my ($hostname,$lonid) = @_;
172: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
173: Type => SOCK_STREAM,
174: Timeout => 10);
175: return 0 if (!$client);
176: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
177: my $result = <$client>;
178: chomp($result);
179: return 1 if ($result eq 'done');
180: return 0;
181: }
182:
183: sub get_server_timezone {
184: my ($cnum,$cdom) = @_;
185: my $home=&homeserver($cnum,$cdom);
186: if ($home ne 'no_host') {
187: my $cachetime = 24*3600;
188: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
189: if (defined($cached)) {
190: return $timezone;
191: } else {
192: my $timezone = &reply('servertimezone',$home);
193: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
194: }
195: }
196: }
197:
198: sub get_server_loncaparev {
199: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
200: if (defined($lonhost)) {
201: if (!defined(&hostname($lonhost))) {
202: undef($lonhost);
203: }
204: }
205: if (!defined($lonhost)) {
206: if (defined(&domain($dom,'primary'))) {
207: $lonhost=&domain($dom,'primary');
208: if ($lonhost eq 'no_host') {
209: undef($lonhost);
210: }
211: }
212: }
213: if (defined($lonhost)) {
214: my $cachetime = 12*3600;
215: if (!$ignore_cache) {
216: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
217: if (defined($cached)) {
218: return $loncaparev;
219: }
220: }
221: my ($answer,$loncaparev);
222: my @ids=¤t_machine_ids();
223: if (grep(/^\Q$lonhost\E$/,@ids)) {
224: $answer = $perlvar{'lonVersion'};
225: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
226: $loncaparev = $1;
227: }
228: } else {
229: $answer = &reply('serverloncaparev',$lonhost);
230: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
231: if ($caller eq 'loncron') {
232: my $ua=new LWP::UserAgent;
233: $ua->timeout(4);
234: my $protocol = $protocol{$lonhost};
235: $protocol = 'http' if ($protocol ne 'https');
236: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
237: my $request=new HTTP::Request('GET',$url);
238: my $response=$ua->request($request);
239: unless ($response->is_error()) {
240: my $content = $response->content;
241: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
242: $loncaparev = $1;
243: }
244: }
245: } else {
246: $loncaparev = $loncaparevs{$lonhost};
247: }
248: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
249: $loncaparev = $1;
250: }
251: }
252: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
253: }
254: }
255:
256: sub get_server_homeID {
257: my ($hostname,$ignore_cache,$caller) = @_;
258: unless ($ignore_cache) {
259: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
260: if (defined($cached)) {
261: return $serverhomeID;
262: }
263: }
264: my $cachetime = 12*3600;
265: my $serverhomeID;
266: if ($caller eq 'loncron') {
267: my @machine_ids = &machine_ids($hostname);
268: foreach my $id (@machine_ids) {
269: my $response = &reply('serverhomeID',$id);
270: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
271: $serverhomeID = $response;
272: last;
273: }
274: }
275: if ($serverhomeID eq '') {
276: $serverhomeID = $machine_ids[-1];
277: }
278: } else {
279: $serverhomeID = $serverhomeIDs{$hostname};
280: }
281: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
282: }
283:
284: # -------------------------------------------------- Non-critical communication
285: sub subreply {
286: my ($cmd,$server)=@_;
287: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
288: #
289: # With loncnew process trimming, there's a timing hole between lonc server
290: # process exit and the master server picking up the listen on the AF_UNIX
291: # socket. In that time interval, a lock file will exist:
292:
293: my $lockfile=$peerfile.".lock";
294: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
295: sleep(1);
296: }
297: # At this point, either a loncnew parent is listening or an old lonc
298: # or loncnew child is listening so we can connect or everything's dead.
299: #
300: # We'll give the connection a few tries before abandoning it. If
301: # connection is not possible, we'll con_lost back to the client.
302: #
303: my $client;
304: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
305: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
306: Type => SOCK_STREAM,
307: Timeout => 10);
308: if ($client) {
309: last; # Connected!
310: } else {
311: &create_connection(&hostname($server),$server);
312: }
313: sleep(1); # Try again later if failed connection.
314: }
315: my $answer;
316: if ($client) {
317: print $client "sethost:$server:$cmd\n";
318: $answer=<$client>;
319: if (!$answer) { $answer="con_lost"; }
320: chomp($answer);
321: } else {
322: $answer = 'con_lost'; # Failed connection.
323: }
324: return $answer;
325: }
326:
327: sub reply {
328: my ($cmd,$server)=@_;
329: unless (defined(&hostname($server))) { return 'no_such_host'; }
330: my $answer=subreply($cmd,$server);
331: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
332: &logthis("<font color=\"blue\">WARNING:".
333: " $cmd to $server returned $answer</font>");
334: }
335: return $answer;
336: }
337:
338: # ----------------------------------------------------------- Send USR1 to lonc
339:
340: sub reconlonc {
341: my ($lonid) = @_;
342: my $hostname = &hostname($lonid);
343: if ($lonid) {
344: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
345: if ($hostname && -e $peerfile) {
346: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
347: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
348: Type => SOCK_STREAM,
349: Timeout => 10);
350: if ($client) {
351: print $client ("reset_retries\n");
352: my $answer=<$client>;
353: #reset just this one.
354: }
355: }
356: return;
357: }
358:
359: &logthis("Trying to reconnect lonc");
360: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
361: if (open(my $fh,"<$loncfile")) {
362: my $loncpid=<$fh>;
363: chomp($loncpid);
364: if (kill 0 => $loncpid) {
365: &logthis("lonc at pid $loncpid responding, sending USR1");
366: kill USR1 => $loncpid;
367: sleep 1;
368: } else {
369: &logthis(
370: "<font color=\"blue\">WARNING:".
371: " lonc at pid $loncpid not responding, giving up</font>");
372: }
373: } else {
374: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
375: }
376: }
377:
378: # ------------------------------------------------------ Critical communication
379:
380: sub critical {
381: my ($cmd,$server)=@_;
382: unless (&hostname($server)) {
383: &logthis("<font color=\"blue\">WARNING:".
384: " Critical message to unknown server ($server)</font>");
385: return 'no_such_host';
386: }
387: my $answer=reply($cmd,$server);
388: if ($answer eq 'con_lost') {
389: &reconlonc("$perlvar{'lonSockDir'}/$server");
390: my $answer=reply($cmd,$server);
391: if ($answer eq 'con_lost') {
392: my $now=time;
393: my $middlename=$cmd;
394: $middlename=substr($middlename,0,16);
395: $middlename=~s/\W//g;
396: my $dfilename=
397: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
398: $dumpcount++;
399: {
400: my $dfh;
401: if (open($dfh,">$dfilename")) {
402: print $dfh "$cmd\n";
403: close($dfh);
404: }
405: }
406: sleep 2;
407: my $wcmd='';
408: {
409: my $dfh;
410: if (open($dfh,"<$dfilename")) {
411: $wcmd=<$dfh>;
412: close($dfh);
413: }
414: }
415: chomp($wcmd);
416: if ($wcmd eq $cmd) {
417: &logthis("<font color=\"blue\">WARNING: ".
418: "Connection buffer $dfilename: $cmd</font>");
419: &logperm("D:$server:$cmd");
420: return 'con_delayed';
421: } else {
422: &logthis("<font color=\"red\">CRITICAL:"
423: ." Critical connection failed: $server $cmd</font>");
424: &logperm("F:$server:$cmd");
425: return 'con_failed';
426: }
427: }
428: }
429: return $answer;
430: }
431:
432: # ------------------------------------------- check if return value is an error
433:
434: sub error {
435: my ($result) = @_;
436: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
437: if ($2 == 2) { return undef; }
438: return $1;
439: }
440: return undef;
441: }
442:
443: sub convert_and_load_session_env {
444: my ($lonidsdir,$handle)=@_;
445: my @profile;
446: {
447: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
448: if (!$opened) {
449: return 0;
450: }
451: flock($idf,LOCK_SH);
452: @profile=<$idf>;
453: close($idf);
454: }
455: my %temp_env;
456: foreach my $line (@profile) {
457: if ($line !~ m/=/) {
458: return 0;
459: }
460: chomp($line);
461: my ($envname,$envvalue)=split(/=/,$line,2);
462: $temp_env{&unescape($envname)} = &unescape($envvalue);
463: }
464: unlink("$lonidsdir/$handle.id");
465: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
466: 0640)) {
467: %disk_env = %temp_env;
468: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
469: untie(%disk_env);
470: }
471: return 1;
472: }
473:
474: # ------------------------------------------- Transfer profile into environment
475: my $env_loaded;
476: sub transfer_profile_to_env {
477: my ($lonidsdir,$handle,$force_transfer) = @_;
478: if (!$force_transfer && $env_loaded) { return; }
479:
480: if (!defined($lonidsdir)) {
481: $lonidsdir = $perlvar{'lonIDsDir'};
482: }
483: if (!defined($handle)) {
484: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
485: }
486:
487: my $convert;
488: {
489: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
490: if (!$opened) {
491: return;
492: }
493: flock($idf,LOCK_SH);
494: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
495: &GDBM_READER(),0640)) {
496: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
497: untie(%disk_env);
498: } else {
499: $convert = 1;
500: }
501: }
502: if ($convert) {
503: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
504: &logthis("Failed to load session, or convert session.");
505: }
506: }
507:
508: my %remove;
509: while ( my $envname = each(%env) ) {
510: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
511: if ($time < time-300) {
512: $remove{$key}++;
513: }
514: }
515: }
516:
517: $env{'user.environment'} = "$lonidsdir/$handle.id";
518: $env_loaded=1;
519: foreach my $expired_key (keys(%remove)) {
520: &delenv($expired_key);
521: }
522: }
523:
524: # ---------------------------------------------------- Check for valid session
525: sub check_for_valid_session {
526: my ($r) = @_;
527: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
528: my $lonid=$cookies{'lonID'};
529: return undef if (!$lonid);
530:
531: my $handle=&LONCAPA::clean_handle($lonid->value);
532: my $lonidsdir=$r->dir_config('lonIDsDir');
533: return undef if (!-e "$lonidsdir/$handle.id");
534:
535: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
536: return undef if (!$opened);
537:
538: flock($idf,LOCK_SH);
539: my %disk_env;
540: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
541: &GDBM_READER(),0640)) {
542: return undef;
543: }
544:
545: if (!defined($disk_env{'user.name'})
546: || !defined($disk_env{'user.domain'})) {
547: return undef;
548: }
549: return $handle;
550: }
551:
552: sub timed_flock {
553: my ($file,$lock_type) = @_;
554: my $failed=0;
555: eval {
556: local $SIG{__DIE__}='DEFAULT';
557: local $SIG{ALRM}=sub {
558: $failed=1;
559: die("failed lock");
560: };
561: alarm(13);
562: flock($file,$lock_type);
563: alarm(0);
564: };
565: if ($failed) {
566: return undef;
567: } else {
568: return 1;
569: }
570: }
571:
572: # ---------------------------------------------------------- Append Environment
573:
574: sub appenv {
575: my ($newenv,$roles) = @_;
576: if (ref($newenv) eq 'HASH') {
577: foreach my $key (keys(%{$newenv})) {
578: my $refused = 0;
579: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
580: $refused = 1;
581: if (ref($roles) eq 'ARRAY') {
582: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
583: if (grep(/^\Q$role\E$/,@{$roles})) {
584: $refused = 0;
585: }
586: }
587: }
588: if ($refused) {
589: &logthis("<font color=\"blue\">WARNING: ".
590: "Attempt to modify environment ".$key." to ".$newenv->{$key}
591: .'</font>');
592: delete($newenv->{$key});
593: } else {
594: $env{$key}=$newenv->{$key};
595: }
596: }
597: my $opened = open(my $env_file,'+<',$env{'user.environment'});
598: if ($opened
599: && &timed_flock($env_file,LOCK_EX)
600: &&
601: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
602: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
603: while (my ($key,$value) = each(%{$newenv})) {
604: $disk_env{$key} = $value;
605: }
606: untie(%disk_env);
607: }
608: }
609: return 'ok';
610: }
611: # ----------------------------------------------------- Delete from Environment
612:
613: sub delenv {
614: my ($delthis,$regexp) = @_;
615: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
616: &logthis("<font color=\"blue\">WARNING: ".
617: "Attempt to delete from environment ".$delthis);
618: return 'error';
619: }
620: my $opened = open(my $env_file,'+<',$env{'user.environment'});
621: if ($opened
622: && &timed_flock($env_file,LOCK_EX)
623: &&
624: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
625: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
626: foreach my $key (keys(%disk_env)) {
627: if ($regexp) {
628: if ($key=~/^$delthis/) {
629: delete($env{$key});
630: delete($disk_env{$key});
631: }
632: } else {
633: if ($key=~/^\Q$delthis\E/) {
634: delete($env{$key});
635: delete($disk_env{$key});
636: }
637: }
638: }
639: untie(%disk_env);
640: }
641: return 'ok';
642: }
643:
644: sub get_env_multiple {
645: my ($name) = @_;
646: my @values;
647: if (defined($env{$name})) {
648: # exists is it an array
649: if (ref($env{$name})) {
650: @values=@{ $env{$name} };
651: } else {
652: $values[0]=$env{$name};
653: }
654: }
655: return(@values);
656: }
657:
658: # ------------------------------------------------------------------- Locking
659:
660: sub set_lock {
661: my ($text)=@_;
662: $locknum++;
663: my $id=$$.'-'.$locknum;
664: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
665: 'session.lock.'.$id => $text});
666: return $id;
667: }
668:
669: sub get_locks {
670: my $num=0;
671: my %texts=();
672: foreach my $lock (split(/\,/,$env{'session.locks'})) {
673: if ($lock=~/\w/) {
674: $num++;
675: $texts{$lock}=$env{'session.lock.'.$lock};
676: }
677: }
678: return ($num,%texts);
679: }
680:
681: sub remove_lock {
682: my ($id)=@_;
683: my $newlocks='';
684: foreach my $lock (split(/\,/,$env{'session.locks'})) {
685: if (($lock=~/\w/) && ($lock ne $id)) {
686: $newlocks.=','.$lock;
687: }
688: }
689: &appenv({'session.locks' => $newlocks});
690: &delenv('session.lock.'.$id);
691: }
692:
693: sub remove_all_locks {
694: my $activelocks=$env{'session.locks'};
695: foreach my $lock (split(/\,/,$env{'session.locks'})) {
696: if ($lock=~/\w/) {
697: &remove_lock($lock);
698: }
699: }
700: }
701:
702:
703: # ------------------------------------------ Find out current server userload
704: sub userload {
705: my $numusers=0;
706: {
707: opendir(LONIDS,$perlvar{'lonIDsDir'});
708: my $filename;
709: my $curtime=time;
710: while ($filename=readdir(LONIDS)) {
711: next if ($filename eq '.' || $filename eq '..');
712: next if ($filename =~ /publicuser_\d+\.id/);
713: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
714: if ($curtime-$mtime < 1800) { $numusers++; }
715: }
716: closedir(LONIDS);
717: }
718: my $userloadpercent=0;
719: my $maxuserload=$perlvar{'lonUserLoadLim'};
720: if ($maxuserload) {
721: $userloadpercent=100*$numusers/$maxuserload;
722: }
723: $userloadpercent=sprintf("%.2f",$userloadpercent);
724: return $userloadpercent;
725: }
726:
727: # ------------------------------ Find server with least workload from spare.tab
728:
729: sub spareserver {
730: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
731: my $spare_server;
732: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
733: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
734: : $userloadpercent;
735: my ($uint_dom,$remotesessions);
736: if (($udom ne '') && (&domain($udom) ne '')) {
737: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
738: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
739: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
740: $remotesessions = $udomdefaults{'remotesessions'};
741: }
742: foreach my $try_server (@{ $spareid{'primary'} }) {
743: if ($uint_dom) {
744: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
745: $try_server));
746: }
747: ($spare_server, $lowest_load) =
748: &compare_server_load($try_server, $spare_server, $lowest_load);
749: }
750:
751: my $found_server = ($spare_server ne '' && $lowest_load < 100);
752:
753: if (!$found_server) {
754: foreach my $try_server (@{ $spareid{'default'} }) {
755: if ($uint_dom) {
756: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
757: $try_server));
758: }
759: ($spare_server, $lowest_load) =
760: &compare_server_load($try_server, $spare_server, $lowest_load);
761: }
762: }
763:
764: if (!$want_server_name) {
765: my $protocol = 'http';
766: if ($protocol{$spare_server} eq 'https') {
767: $protocol = $protocol{$spare_server};
768: }
769: if (defined($spare_server)) {
770: my $hostname = &hostname($spare_server);
771: if (defined($hostname)) {
772: $spare_server = $protocol.'://'.$hostname;
773: }
774: }
775: }
776: return $spare_server;
777: }
778:
779: sub compare_server_load {
780: my ($try_server, $spare_server, $lowest_load) = @_;
781:
782: my $loadans = &reply('load', $try_server);
783: my $userloadans = &reply('userload',$try_server);
784:
785: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
786: return; #didn't get a number from the server
787: }
788:
789: my $load;
790: if ($loadans =~ /\d/) {
791: if ($userloadans =~ /\d/) {
792: #both are numbers, pick the bigger one
793: $load = ($loadans > $userloadans) ? $loadans
794: : $userloadans;
795: } else {
796: $load = $loadans;
797: }
798: } else {
799: $load = $userloadans;
800: }
801:
802: if (($load =~ /\d/) && ($load < $lowest_load)) {
803: $spare_server = $try_server;
804: $lowest_load = $load;
805: }
806: return ($spare_server,$lowest_load);
807: }
808:
809: # --------------------------- ask offload servers if user already has a session
810: sub find_existing_session {
811: my ($udom,$uname) = @_;
812: foreach my $try_server (@{ $spareid{'primary'} },
813: @{ $spareid{'default'} }) {
814: return $try_server if (&has_user_session($try_server, $udom, $uname));
815: }
816: return;
817: }
818:
819: # -------------------------------- ask if server already has a session for user
820: sub has_user_session {
821: my ($lonid,$udom,$uname) = @_;
822: my $result = &reply(join(':','userhassession',
823: map {&escape($_)} ($udom,$uname)),$lonid);
824: return 1 if ($result eq 'ok');
825:
826: return 0;
827: }
828:
829: # --------- determine least loaded server in a user's domain which allows login
830:
831: sub choose_server {
832: my ($udom) = @_;
833: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
834: my %servers = &get_servers($udom);
835: my $lowest_load = 30000;
836: my ($login_host,$hostname);
837: foreach my $lonhost (keys(%servers)) {
838: my $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
839: if ($loginvia eq '') {
840: ($login_host, $lowest_load) =
841: &compare_server_load($lonhost, $login_host, $lowest_load);
842: }
843: }
844: if ($login_host ne '') {
845: $hostname = $servers{$login_host};
846: }
847: return ($login_host,$hostname);
848: }
849:
850: # --------------------------------------------- Try to change a user's password
851:
852: sub changepass {
853: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
854: $currentpass = &escape($currentpass);
855: $newpass = &escape($newpass);
856: my $lonhost = $perlvar{'lonHostID'};
857: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
858: $server);
859: if (! $answer) {
860: &logthis("No reply on password change request to $server ".
861: "by $uname in domain $udom.");
862: } elsif ($answer =~ "^ok") {
863: &logthis("$uname in $udom successfully changed their password ".
864: "on $server.");
865: } elsif ($answer =~ "^pwchange_failure") {
866: &logthis("$uname in $udom was unable to change their password ".
867: "on $server. The action was blocked by either lcpasswd ".
868: "or pwchange");
869: } elsif ($answer =~ "^non_authorized") {
870: &logthis("$uname in $udom did not get their password correct when ".
871: "attempting to change it on $server.");
872: } elsif ($answer =~ "^auth_mode_error") {
873: &logthis("$uname in $udom attempted to change their password despite ".
874: "not being locally or internally authenticated on $server.");
875: } elsif ($answer =~ "^unknown_user") {
876: &logthis("$uname in $udom attempted to change their password ".
877: "on $server but were unable to because $server is not ".
878: "their home server.");
879: } elsif ($answer =~ "^refused") {
880: &logthis("$server refused to change $uname in $udom password because ".
881: "it was sent an unencrypted request to change the password.");
882: } elsif ($answer =~ "invalid_client") {
883: &logthis("$server refused to change $uname in $udom password because ".
884: "it was a reset by e-mail originating from an invalid server.");
885: }
886: return $answer;
887: }
888:
889: # ----------------------- Try to determine user's current authentication scheme
890:
891: sub queryauthenticate {
892: my ($uname,$udom)=@_;
893: my $uhome=&homeserver($uname,$udom);
894: if (!$uhome) {
895: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
896: return 'no_host';
897: }
898: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
899: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
900: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
901: }
902: return $answer;
903: }
904:
905: # --------- Try to authenticate user from domain's lib servers (first this one)
906:
907: sub authenticate {
908: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
909: $upass=&escape($upass);
910: $uname= &LONCAPA::clean_username($uname);
911: my $uhome=&homeserver($uname,$udom,1);
912: my $newhome;
913: if ((!$uhome) || ($uhome eq 'no_host')) {
914: # Maybe the machine was offline and only re-appeared again recently?
915: &reconlonc();
916: # One more
917: $uhome=&homeserver($uname,$udom,1);
918: if (($uhome eq 'no_host') && $checkdefauth) {
919: if (defined(&domain($udom,'primary'))) {
920: $newhome=&domain($udom,'primary');
921: }
922: if ($newhome ne '') {
923: $uhome = $newhome;
924: }
925: }
926: if ((!$uhome) || ($uhome eq 'no_host')) {
927: &logthis("User $uname at $udom is unknown in authenticate");
928: return 'no_host';
929: }
930: }
931: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
932: if ($answer eq 'authorized') {
933: if ($newhome) {
934: &logthis("User $uname at $udom authorized by $uhome, but needs account");
935: return 'no_account_on_host';
936: } else {
937: &logthis("User $uname at $udom authorized by $uhome");
938: return $uhome;
939: }
940: }
941: if ($answer eq 'non_authorized') {
942: &logthis("User $uname at $udom rejected by $uhome");
943: return 'no_host';
944: }
945: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
946: return 'no_host';
947: }
948:
949: sub can_host_session {
950: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
951: my $canhost = 1;
952: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
953: if (ref($remotesessions) eq 'HASH') {
954: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
955: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
956: $canhost = 0;
957: } else {
958: $canhost = 1;
959: }
960: }
961: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
962: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
963: $canhost = 1;
964: } else {
965: $canhost = 0;
966: }
967: }
968: if ($canhost) {
969: if ($remotesessions->{'version'} ne '') {
970: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
971: if ($reqmajor ne '' && $reqminor ne '') {
972: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
973: my $major = $1;
974: my $minor = $2;
975: if (($major < $reqmajor ) ||
976: (($major == $reqmajor) && ($minor < $reqminor))) {
977: $canhost = 0;
978: }
979: } else {
980: $canhost = 0;
981: }
982: }
983: }
984: }
985: }
986: if ($canhost) {
987: if (ref($hostedsessions) eq 'HASH') {
988: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
989: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'excludedomain'}})) {
990: $canhost = 0;
991: } else {
992: $canhost = 1;
993: }
994: }
995: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
996: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'includedomain'}})) {
997: $canhost = 1;
998: } else {
999: $canhost = 0;
1000: }
1001: }
1002: }
1003: }
1004: return $canhost;
1005: }
1006:
1007: sub spare_can_host {
1008: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1009: my $canhost=1;
1010: my @intdoms;
1011: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1012: if (ref($internet_names) eq 'ARRAY') {
1013: @intdoms = @{$internet_names};
1014: }
1015: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1016: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1017: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1018: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1019: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1020: $canhost = &can_host_session($udom,$try_server,$remoterev,
1021: $remotesessions,
1022: $defdomdefaults{'hostedsessions'});
1023: }
1024: return $canhost;
1025: }
1026:
1027: # ---------------------- Find the homebase for a user from domain's lib servers
1028:
1029: my %homecache;
1030: sub homeserver {
1031: my ($uname,$udom,$ignoreBadCache)=@_;
1032: my $index="$uname:$udom";
1033:
1034: if (exists($homecache{$index})) { return $homecache{$index}; }
1035:
1036: my %servers = &get_servers($udom,'library');
1037: foreach my $tryserver (keys(%servers)) {
1038: next if ($ignoreBadCache ne 'true' &&
1039: exists($badServerCache{$tryserver}));
1040:
1041: my $answer=reply("home:$udom:$uname",$tryserver);
1042: if ($answer eq 'found') {
1043: delete($badServerCache{$tryserver});
1044: return $homecache{$index}=$tryserver;
1045: } elsif ($answer eq 'no_host') {
1046: $badServerCache{$tryserver}=1;
1047: }
1048: }
1049: return 'no_host';
1050: }
1051:
1052: # ------------------------------------- Find the usernames behind a list of IDs
1053:
1054: sub idget {
1055: my ($udom,@ids)=@_;
1056: my %returnhash=();
1057:
1058: my %servers = &get_servers($udom,'library');
1059: foreach my $tryserver (keys(%servers)) {
1060: my $idlist=join('&',@ids);
1061: $idlist=~tr/A-Z/a-z/;
1062: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1063: my @answer=();
1064: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1065: @answer=split(/\&/,$reply);
1066: } ;
1067: my $i;
1068: for ($i=0;$i<=$#ids;$i++) {
1069: if ($answer[$i]) {
1070: $returnhash{$ids[$i]}=$answer[$i];
1071: }
1072: }
1073: }
1074: return %returnhash;
1075: }
1076:
1077: # ------------------------------------- Find the IDs behind a list of usernames
1078:
1079: sub idrget {
1080: my ($udom,@unames)=@_;
1081: my %returnhash=();
1082: foreach my $uname (@unames) {
1083: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1084: }
1085: return %returnhash;
1086: }
1087:
1088: # ------------------------------- Store away a list of names and associated IDs
1089:
1090: sub idput {
1091: my ($udom,%ids)=@_;
1092: my %servers=();
1093: foreach my $uname (keys(%ids)) {
1094: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1095: my $uhom=&homeserver($uname,$udom);
1096: if ($uhom ne 'no_host') {
1097: my $id=&escape($ids{$uname});
1098: $id=~tr/A-Z/a-z/;
1099: my $esc_unam=&escape($uname);
1100: if ($servers{$uhom}) {
1101: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1102: } else {
1103: $servers{$uhom}=$id.'='.$esc_unam;
1104: }
1105: }
1106: }
1107: foreach my $server (keys(%servers)) {
1108: &critical('idput:'.$udom.':'.$servers{$server},$server);
1109: }
1110: }
1111:
1112: # ------------------------------dump from db file owned by domainconfig user
1113: sub dump_dom {
1114: my ($namespace,$udom,$regexp,$range)=@_;
1115: if (!$udom) {
1116: $udom=$env{'user.domain'};
1117: }
1118: my %returnhash;
1119: if ($udom) {
1120: my $uname = &get_domainconfiguser($udom);
1121: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1122: }
1123: return %returnhash;
1124: }
1125:
1126: # ------------------------------------------ get items from domain db files
1127:
1128: sub get_dom {
1129: my ($namespace,$storearr,$udom,$uhome)=@_;
1130: my $items='';
1131: foreach my $item (@$storearr) {
1132: $items.=&escape($item).'&';
1133: }
1134: $items=~s/\&$//;
1135: if (!$udom) {
1136: $udom=$env{'user.domain'};
1137: if (defined(&domain($udom,'primary'))) {
1138: $uhome=&domain($udom,'primary');
1139: } else {
1140: undef($uhome);
1141: }
1142: } else {
1143: if (!$uhome) {
1144: if (defined(&domain($udom,'primary'))) {
1145: $uhome=&domain($udom,'primary');
1146: }
1147: }
1148: }
1149: if ($udom && $uhome && ($uhome ne 'no_host')) {
1150: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1151: my %returnhash;
1152: if ($rep eq '' || $rep =~ /^error: 2 /) {
1153: return %returnhash;
1154: }
1155: my @pairs=split(/\&/,$rep);
1156: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1157: return @pairs;
1158: }
1159: my $i=0;
1160: foreach my $item (@$storearr) {
1161: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1162: $i++;
1163: }
1164: return %returnhash;
1165: } else {
1166: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1167: }
1168: }
1169:
1170: # -------------------------------------------- put items in domain db files
1171:
1172: sub put_dom {
1173: my ($namespace,$storehash,$udom,$uhome)=@_;
1174: if (!$udom) {
1175: $udom=$env{'user.domain'};
1176: if (defined(&domain($udom,'primary'))) {
1177: $uhome=&domain($udom,'primary');
1178: } else {
1179: undef($uhome);
1180: }
1181: } else {
1182: if (!$uhome) {
1183: if (defined(&domain($udom,'primary'))) {
1184: $uhome=&domain($udom,'primary');
1185: }
1186: }
1187: }
1188: if ($udom && $uhome && ($uhome ne 'no_host')) {
1189: my $items='';
1190: foreach my $item (keys(%$storehash)) {
1191: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1192: }
1193: $items=~s/\&$//;
1194: return &reply("putdom:$udom:$namespace:$items",$uhome);
1195: } else {
1196: &logthis("put_dom failed - no homeserver and/or domain");
1197: }
1198: }
1199:
1200: # --------------------- newput for items in db file owned by domainconfig user
1201: sub newput_dom {
1202: my ($namespace,$storehash,$udom) = @_;
1203: my $result;
1204: if (!$udom) {
1205: $udom=$env{'user.domain'};
1206: }
1207: if ($udom) {
1208: my $uname = &get_domainconfiguser($udom);
1209: $result = &newput($namespace,$storehash,$udom,$uname);
1210: }
1211: return $result;
1212: }
1213:
1214: # --------------------- delete for items in db file owned by domainconfig user
1215: sub del_dom {
1216: my ($namespace,$storearr,$udom)=@_;
1217: if (ref($storearr) eq 'ARRAY') {
1218: if (!$udom) {
1219: $udom=$env{'user.domain'};
1220: }
1221: if ($udom) {
1222: my $uname = &get_domainconfiguser($udom);
1223: return &del($namespace,$storearr,$udom,$uname);
1224: }
1225: }
1226: }
1227:
1228: # ----------------------------------construct domainconfig user for a domain
1229: sub get_domainconfiguser {
1230: my ($udom) = @_;
1231: return $udom.'-domainconfig';
1232: }
1233:
1234: sub retrieve_inst_usertypes {
1235: my ($udom) = @_;
1236: my (%returnhash,@order);
1237: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1238: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1239: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1240: %returnhash = %{$domdefs{'inststatustypes'}};
1241: @order = @{$domdefs{'inststatusorder'}};
1242: } else {
1243: if (defined(&domain($udom,'primary'))) {
1244: my $uhome=&domain($udom,'primary');
1245: my $rep=&reply("inst_usertypes:$udom",$uhome);
1246: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1247: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1248: return (\%returnhash,\@order);
1249: }
1250: my ($hashitems,$orderitems) = split(/:/,$rep);
1251: my @pairs=split(/\&/,$hashitems);
1252: foreach my $item (@pairs) {
1253: my ($key,$value)=split(/=/,$item,2);
1254: $key = &unescape($key);
1255: next if ($key =~ /^error: 2 /);
1256: $returnhash{$key}=&thaw_unescape($value);
1257: }
1258: my @esc_order = split(/\&/,$orderitems);
1259: foreach my $item (@esc_order) {
1260: push(@order,&unescape($item));
1261: }
1262: } else {
1263: &logthis("get_dom failed - no primary domain server for $udom");
1264: }
1265: }
1266: return (\%returnhash,\@order);
1267: }
1268:
1269: sub is_domainimage {
1270: my ($url) = @_;
1271: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1272: if (&domain($1) ne '') {
1273: return '1';
1274: }
1275: }
1276: return;
1277: }
1278:
1279: sub inst_directory_query {
1280: my ($srch) = @_;
1281: my $udom = $srch->{'srchdomain'};
1282: my %results;
1283: my $homeserver = &domain($udom,'primary');
1284: my $outcome;
1285: if ($homeserver ne '') {
1286: my $queryid=&reply("querysend:instdirsearch:".
1287: &escape($srch->{'srchby'}).':'.
1288: &escape($srch->{'srchterm'}).':'.
1289: &escape($srch->{'srchtype'}),$homeserver);
1290: my $host=&hostname($homeserver);
1291: if ($queryid !~/^\Q$host\E\_/) {
1292: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1293: return;
1294: }
1295: my $response = &get_query_reply($queryid);
1296: my $maxtries = 5;
1297: my $tries = 1;
1298: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1299: $response = &get_query_reply($queryid);
1300: $tries ++;
1301: }
1302:
1303: if (!&error($response) && $response ne 'refused') {
1304: if ($response eq 'unavailable') {
1305: $outcome = $response;
1306: } else {
1307: $outcome = 'ok';
1308: my @matches = split(/\n/,$response);
1309: foreach my $match (@matches) {
1310: my ($key,$value) = split(/=/,$match);
1311: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1312: }
1313: }
1314: }
1315: }
1316: return ($outcome,%results);
1317: }
1318:
1319: sub usersearch {
1320: my ($srch) = @_;
1321: my $dom = $srch->{'srchdomain'};
1322: my %results;
1323: my %libserv = &all_library();
1324: my $query = 'usersearch';
1325: foreach my $tryserver (keys(%libserv)) {
1326: if (&host_domain($tryserver) eq $dom) {
1327: my $host=&hostname($tryserver);
1328: my $queryid=
1329: &reply("querysend:".&escape($query).':'.
1330: &escape($srch->{'srchby'}).':'.
1331: &escape($srch->{'srchtype'}).':'.
1332: &escape($srch->{'srchterm'}),$tryserver);
1333: if ($queryid !~/^\Q$host\E\_/) {
1334: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1335: next;
1336: }
1337: my $reply = &get_query_reply($queryid);
1338: my $maxtries = 1;
1339: my $tries = 1;
1340: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1341: $reply = &get_query_reply($queryid);
1342: $tries ++;
1343: }
1344: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1345: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1346: } else {
1347: my @matches;
1348: if ($reply =~ /\n/) {
1349: @matches = split(/\n/,$reply);
1350: } else {
1351: @matches = split(/\&/,$reply);
1352: }
1353: foreach my $match (@matches) {
1354: my ($uname,$udom,%userhash);
1355: foreach my $entry (split(/:/,$match)) {
1356: my ($key,$value) =
1357: map {&unescape($_);} split(/=/,$entry);
1358: $userhash{$key} = $value;
1359: if ($key eq 'username') {
1360: $uname = $value;
1361: } elsif ($key eq 'domain') {
1362: $udom = $value;
1363: }
1364: }
1365: $results{$uname.':'.$udom} = \%userhash;
1366: }
1367: }
1368: }
1369: }
1370: return %results;
1371: }
1372:
1373: sub get_instuser {
1374: my ($udom,$uname,$id) = @_;
1375: my $homeserver = &domain($udom,'primary');
1376: my ($outcome,%results);
1377: if ($homeserver ne '') {
1378: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1379: &escape($id).':'.&escape($udom),$homeserver);
1380: my $host=&hostname($homeserver);
1381: if ($queryid !~/^\Q$host\E\_/) {
1382: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1383: return;
1384: }
1385: my $response = &get_query_reply($queryid);
1386: my $maxtries = 5;
1387: my $tries = 1;
1388: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1389: $response = &get_query_reply($queryid);
1390: $tries ++;
1391: }
1392: if (!&error($response) && $response ne 'refused') {
1393: if ($response eq 'unavailable') {
1394: $outcome = $response;
1395: } else {
1396: $outcome = 'ok';
1397: my @matches = split(/\n/,$response);
1398: foreach my $match (@matches) {
1399: my ($key,$value) = split(/=/,$match);
1400: $results{&unescape($key)} = &thaw_unescape($value);
1401: }
1402: }
1403: }
1404: }
1405: my %userinfo;
1406: if (ref($results{$uname}) eq 'HASH') {
1407: %userinfo = %{$results{$uname}};
1408: }
1409: return ($outcome,%userinfo);
1410: }
1411:
1412: sub inst_rulecheck {
1413: my ($udom,$uname,$id,$item,$rules) = @_;
1414: my %returnhash;
1415: if ($udom ne '') {
1416: if (ref($rules) eq 'ARRAY') {
1417: @{$rules} = map {&escape($_);} (@{$rules});
1418: my $rulestr = join(':',@{$rules});
1419: my $homeserver=&domain($udom,'primary');
1420: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1421: my $response;
1422: if ($item eq 'username') {
1423: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1424: ':'.&escape($uname).':'.$rulestr,
1425: $homeserver));
1426: } elsif ($item eq 'id') {
1427: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1428: ':'.&escape($id).':'.$rulestr,
1429: $homeserver));
1430: } elsif ($item eq 'selfcreate') {
1431: $response=&unescape(&reply('instselfcreatecheck:'.
1432: &escape($udom).':'.&escape($uname).
1433: ':'.$rulestr,$homeserver));
1434: }
1435: if ($response ne 'refused') {
1436: my @pairs=split(/\&/,$response);
1437: foreach my $item (@pairs) {
1438: my ($key,$value)=split(/=/,$item,2);
1439: $key = &unescape($key);
1440: next if ($key =~ /^error: 2 /);
1441: $returnhash{$key}=&thaw_unescape($value);
1442: }
1443: }
1444: }
1445: }
1446: }
1447: return %returnhash;
1448: }
1449:
1450: sub inst_userrules {
1451: my ($udom,$check) = @_;
1452: my (%ruleshash,@ruleorder);
1453: if ($udom ne '') {
1454: my $homeserver=&domain($udom,'primary');
1455: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1456: my $response;
1457: if ($check eq 'id') {
1458: $response=&reply('instidrules:'.&escape($udom),
1459: $homeserver);
1460: } elsif ($check eq 'email') {
1461: $response=&reply('instemailrules:'.&escape($udom),
1462: $homeserver);
1463: } else {
1464: $response=&reply('instuserrules:'.&escape($udom),
1465: $homeserver);
1466: }
1467: if (($response ne 'refused') && ($response ne 'error') &&
1468: ($response ne 'unknown_cmd') &&
1469: ($response ne 'no_such_host')) {
1470: my ($hashitems,$orderitems) = split(/:/,$response);
1471: my @pairs=split(/\&/,$hashitems);
1472: foreach my $item (@pairs) {
1473: my ($key,$value)=split(/=/,$item,2);
1474: $key = &unescape($key);
1475: next if ($key =~ /^error: 2 /);
1476: $ruleshash{$key}=&thaw_unescape($value);
1477: }
1478: my @esc_order = split(/\&/,$orderitems);
1479: foreach my $item (@esc_order) {
1480: push(@ruleorder,&unescape($item));
1481: }
1482: }
1483: }
1484: }
1485: return (\%ruleshash,\@ruleorder);
1486: }
1487:
1488: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1489:
1490: sub get_domain_defaults {
1491: my ($domain) = @_;
1492: my $cachetime = 60*60*24;
1493: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1494: if (defined($cached)) {
1495: if (ref($result) eq 'HASH') {
1496: return %{$result};
1497: }
1498: }
1499: my %domdefaults;
1500: my %domconfig =
1501: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1502: 'requestcourses','inststatus',
1503: 'coursedefaults','usersessions'],$domain);
1504: if (ref($domconfig{'defaults'}) eq 'HASH') {
1505: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1506: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1507: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1508: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1509: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1510: } else {
1511: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1512: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1513: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1514: }
1515: if (ref($domconfig{'quotas'}) eq 'HASH') {
1516: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1517: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1518: } else {
1519: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1520: }
1521: my @usertools = ('aboutme','blog','portfolio');
1522: foreach my $item (@usertools) {
1523: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1524: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1525: }
1526: }
1527: }
1528: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1529: foreach my $item ('official','unofficial','community') {
1530: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1531: }
1532: }
1533: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1534: foreach my $item ('inststatustypes','inststatusorder') {
1535: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1536: }
1537: }
1538: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1539: foreach my $item ('canuse_pdfforms') {
1540: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1541: }
1542: }
1543: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1544: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1545: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1546: }
1547: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1548: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1549: }
1550: }
1551: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1552: $cachetime);
1553: return %domdefaults;
1554: }
1555:
1556: # --------------------------------------------------- Assign a key to a student
1557:
1558: sub assign_access_key {
1559: #
1560: # a valid key looks like uname:udom#comments
1561: # comments are being appended
1562: #
1563: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1564: $kdom=
1565: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1566: $knum=
1567: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1568: $cdom=
1569: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1570: $cnum=
1571: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1572: $udom=$env{'user.name'} unless (defined($udom));
1573: $uname=$env{'user.domain'} unless (defined($uname));
1574: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1575: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1576: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1577: # assigned to this person
1578: # - this should not happen,
1579: # unless something went wrong
1580: # the first time around
1581: # ready to assign
1582: $logentry=$1.'; '.$logentry;
1583: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1584: $kdom,$knum) eq 'ok') {
1585: # key now belongs to user
1586: my $envkey='key.'.$cdom.'_'.$cnum;
1587: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1588: &appenv({'environment.'.$envkey => $ckey});
1589: return 'ok';
1590: } else {
1591: return
1592: 'error: Count not permanently assign key, will need to be re-entered later.';
1593: }
1594: } else {
1595: return 'error: Could not assign key, try again later.';
1596: }
1597: } elsif (!$existing{$ckey}) {
1598: # the key does not exist
1599: return 'error: The key does not exist';
1600: } else {
1601: # the key is somebody else's
1602: return 'error: The key is already in use';
1603: }
1604: }
1605:
1606: # ------------------------------------------ put an additional comment on a key
1607:
1608: sub comment_access_key {
1609: #
1610: # a valid key looks like uname:udom#comments
1611: # comments are being appended
1612: #
1613: my ($ckey,$cdom,$cnum,$logentry)=@_;
1614: $cdom=
1615: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1616: $cnum=
1617: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1618: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1619: if ($existing{$ckey}) {
1620: $existing{$ckey}.='; '.$logentry;
1621: # ready to assign
1622: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1623: $cdom,$cnum) eq 'ok') {
1624: return 'ok';
1625: } else {
1626: return 'error: Count not store comment.';
1627: }
1628: } else {
1629: # the key does not exist
1630: return 'error: The key does not exist';
1631: }
1632: }
1633:
1634: # ------------------------------------------------------ Generate a set of keys
1635:
1636: sub generate_access_keys {
1637: my ($number,$cdom,$cnum,$logentry)=@_;
1638: $cdom=
1639: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1640: $cnum=
1641: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1642: unless (&allowed('mky',$cdom)) { return 0; }
1643: unless (($cdom) && ($cnum)) { return 0; }
1644: if ($number>10000) { return 0; }
1645: sleep(2); # make sure don't get same seed twice
1646: srand(time()^($$+($$<<15))); # from "Programming Perl"
1647: my $total=0;
1648: for (my $i=1;$i<=$number;$i++) {
1649: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1650: sprintf("%lx",int(100000*rand)).'-'.
1651: sprintf("%lx",int(100000*rand));
1652: $newkey=~s/1/g/g; # folks mix up 1 and l
1653: $newkey=~s/0/h/g; # and also 0 and O
1654: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1655: if ($existing{$newkey}) {
1656: $i--;
1657: } else {
1658: if (&put('accesskeys',
1659: { $newkey => '# generated '.localtime().
1660: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1661: '; '.$logentry },
1662: $cdom,$cnum) eq 'ok') {
1663: $total++;
1664: }
1665: }
1666: }
1667: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1668: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1669: return $total;
1670: }
1671:
1672: # ------------------------------------------------------- Validate an accesskey
1673:
1674: sub validate_access_key {
1675: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1676: $cdom=
1677: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1678: $cnum=
1679: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1680: $udom=$env{'user.domain'} unless (defined($udom));
1681: $uname=$env{'user.name'} unless (defined($uname));
1682: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1683: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1684: }
1685:
1686: # ------------------------------------- Find the section of student in a course
1687: sub devalidate_getsection_cache {
1688: my ($udom,$unam,$courseid)=@_;
1689: my $hashid="$udom:$unam:$courseid";
1690: &devalidate_cache_new('getsection',$hashid);
1691: }
1692:
1693: sub courseid_to_courseurl {
1694: my ($courseid) = @_;
1695: #already url style courseid
1696: return $courseid if ($courseid =~ m{^/});
1697:
1698: if (exists($env{'course.'.$courseid.'.num'})) {
1699: my $cnum = $env{'course.'.$courseid.'.num'};
1700: my $cdom = $env{'course.'.$courseid.'.domain'};
1701: return "/$cdom/$cnum";
1702: }
1703:
1704: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1705: if (exists($courseinfo{'num'})) {
1706: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1707: }
1708:
1709: return undef;
1710: }
1711:
1712: sub getsection {
1713: my ($udom,$unam,$courseid)=@_;
1714: my $cachetime=1800;
1715:
1716: my $hashid="$udom:$unam:$courseid";
1717: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1718: if (defined($cached)) { return $result; }
1719:
1720: my %Pending;
1721: my %Expired;
1722: #
1723: # Each role can either have not started yet (pending), be active,
1724: # or have expired.
1725: #
1726: # If there is an active role, we are done.
1727: #
1728: # If there is more than one role which has not started yet,
1729: # choose the one which will start sooner
1730: # If there is one role which has not started yet, return it.
1731: #
1732: # If there is more than one expired role, choose the one which ended last.
1733: # If there is a role which has expired, return it.
1734: #
1735: $courseid = &courseid_to_courseurl($courseid);
1736: my $extra = &freeze_escape({'skipcheck' => 1});
1737: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
1738: foreach my $key (keys(%roleshash)) {
1739: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1740: my $section=$1;
1741: if ($key eq $courseid.'_st') { $section=''; }
1742: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1743: my $now=time;
1744: if (defined($end) && $end && ($now > $end)) {
1745: $Expired{$end}=$section;
1746: next;
1747: }
1748: if (defined($start) && $start && ($now < $start)) {
1749: $Pending{$start}=$section;
1750: next;
1751: }
1752: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1753: }
1754: #
1755: # Presumedly there will be few matching roles from the above
1756: # loop and the sorting time will be negligible.
1757: if (scalar(keys(%Pending))) {
1758: my ($time) = sort {$a <=> $b} keys(%Pending);
1759: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1760: }
1761: if (scalar(keys(%Expired))) {
1762: my @sorted = sort {$a <=> $b} keys(%Expired);
1763: my $time = pop(@sorted);
1764: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1765: }
1766: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1767: }
1768:
1769: sub save_cache {
1770: &purge_remembered();
1771: #&Apache::loncommon::validate_page();
1772: undef(%env);
1773: undef($env_loaded);
1774: }
1775:
1776: my $to_remember=-1;
1777: my %remembered;
1778: my %accessed;
1779: my $kicks=0;
1780: my $hits=0;
1781: sub make_key {
1782: my ($name,$id) = @_;
1783: if (length($id) > 65
1784: && length(&escape($id)) > 200) {
1785: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1786: }
1787: return &escape($name.':'.$id);
1788: }
1789:
1790: sub devalidate_cache_new {
1791: my ($name,$id,$debug) = @_;
1792: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1793: $id=&make_key($name,$id);
1794: $memcache->delete($id);
1795: delete($remembered{$id});
1796: delete($accessed{$id});
1797: }
1798:
1799: sub is_cached_new {
1800: my ($name,$id,$debug) = @_;
1801: $id=&make_key($name,$id);
1802: if (exists($remembered{$id})) {
1803: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1804: $accessed{$id}=[&gettimeofday()];
1805: $hits++;
1806: return ($remembered{$id},1);
1807: }
1808: my $value = $memcache->get($id);
1809: if (!(defined($value))) {
1810: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1811: return (undef,undef);
1812: }
1813: if ($value eq '__undef__') {
1814: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1815: $value=undef;
1816: }
1817: &make_room($id,$value,$debug);
1818: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1819: return ($value,1);
1820: }
1821:
1822: sub do_cache_new {
1823: my ($name,$id,$value,$time,$debug) = @_;
1824: $id=&make_key($name,$id);
1825: my $setvalue=$value;
1826: if (!defined($setvalue)) {
1827: $setvalue='__undef__';
1828: }
1829: if (!defined($time) ) {
1830: $time=600;
1831: }
1832: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1833: my $result = $memcache->set($id,$setvalue,$time);
1834: if (! $result) {
1835: &logthis("caching of id -> $id failed");
1836: $memcache->disconnect_all();
1837: }
1838: # need to make a copy of $value
1839: &make_room($id,$value,$debug);
1840: return $value;
1841: }
1842:
1843: sub make_room {
1844: my ($id,$value,$debug)=@_;
1845:
1846: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1847: : $value;
1848: if ($to_remember<0) { return; }
1849: $accessed{$id}=[&gettimeofday()];
1850: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1851: my $to_kick;
1852: my $max_time=0;
1853: foreach my $other (keys(%accessed)) {
1854: if (&tv_interval($accessed{$other}) > $max_time) {
1855: $to_kick=$other;
1856: $max_time=&tv_interval($accessed{$other});
1857: }
1858: }
1859: delete($remembered{$to_kick});
1860: delete($accessed{$to_kick});
1861: $kicks++;
1862: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1863: return;
1864: }
1865:
1866: sub purge_remembered {
1867: #&logthis("Tossing ".scalar(keys(%remembered)));
1868: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1869: undef(%remembered);
1870: undef(%accessed);
1871: }
1872: # ------------------------------------- Read an entry from a user's environment
1873:
1874: sub userenvironment {
1875: my ($udom,$unam,@what)=@_;
1876: my $items;
1877: foreach my $item (@what) {
1878: $items.=&escape($item).'&';
1879: }
1880: $items=~s/\&$//;
1881: my %returnhash=();
1882: my $uhome = &homeserver($unam,$udom);
1883: unless ($uhome eq 'no_host') {
1884: my @answer=split(/\&/,
1885: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1886: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
1887: return %returnhash;
1888: }
1889: my $i;
1890: for ($i=0;$i<=$#what;$i++) {
1891: $returnhash{$what[$i]}=&unescape($answer[$i]);
1892: }
1893: }
1894: return %returnhash;
1895: }
1896:
1897: # ---------------------------------------------------------- Get a studentphoto
1898: sub studentphoto {
1899: my ($udom,$unam,$ext) = @_;
1900: my $home=&Apache::lonnet::homeserver($unam,$udom);
1901: if (defined($env{'request.course.id'})) {
1902: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1903: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1904: return(&retrievestudentphoto($udom,$unam,$ext));
1905: } else {
1906: my ($result,$perm_reqd)=
1907: &Apache::lonnet::auto_photo_permission($unam,$udom);
1908: if ($result eq 'ok') {
1909: if (!($perm_reqd eq 'yes')) {
1910: return(&retrievestudentphoto($udom,$unam,$ext));
1911: }
1912: }
1913: }
1914: }
1915: } else {
1916: my ($result,$perm_reqd) =
1917: &Apache::lonnet::auto_photo_permission($unam,$udom);
1918: if ($result eq 'ok') {
1919: if (!($perm_reqd eq 'yes')) {
1920: return(&retrievestudentphoto($udom,$unam,$ext));
1921: }
1922: }
1923: }
1924: return '/adm/lonKaputt/lonlogo_broken.gif';
1925: }
1926:
1927: sub retrievestudentphoto {
1928: my ($udom,$unam,$ext,$type) = @_;
1929: my $home=&Apache::lonnet::homeserver($unam,$udom);
1930: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1931: if ($ret eq 'ok') {
1932: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1933: if ($type eq 'thumbnail') {
1934: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1935: }
1936: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1937: return $tokenurl;
1938: } else {
1939: if ($type eq 'thumbnail') {
1940: return '/adm/lonKaputt/genericstudent_tn.gif';
1941: } else {
1942: return '/adm/lonKaputt/lonlogo_broken.gif';
1943: }
1944: }
1945: }
1946:
1947: # -------------------------------------------------------------------- New chat
1948:
1949: sub chatsend {
1950: my ($newentry,$anon,$group)=@_;
1951: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1952: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1953: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1954: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1955: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1956: &escape($newentry)).':'.$group,$chome);
1957: }
1958:
1959: # ------------------------------------------ Find current version of a resource
1960:
1961: sub getversion {
1962: my $fname=&clutter(shift);
1963: unless ($fname=~/^\/res\//) { return -1; }
1964: return ¤tversion(&filelocation('',$fname));
1965: }
1966:
1967: sub currentversion {
1968: my $fname=shift;
1969: my ($result,$cached)=&is_cached_new('resversion',$fname);
1970: if (defined($cached)) { return $result; }
1971: my $author=$fname;
1972: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1973: my ($udom,$uname)=split(/\//,$author);
1974: my $home=homeserver($uname,$udom);
1975: if ($home eq 'no_host') {
1976: return -1;
1977: }
1978: my $answer=reply("currentversion:$fname",$home);
1979: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1980: return -1;
1981: }
1982: return &do_cache_new('resversion',$fname,$answer,600);
1983: }
1984:
1985: # ----------------------------- Subscribe to a resource, return URL if possible
1986:
1987: sub subscribe {
1988: my $fname=shift;
1989: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1990: $fname=~s/[\n\r]//g;
1991: my $author=$fname;
1992: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1993: my ($udom,$uname)=split(/\//,$author);
1994: my $home=homeserver($uname,$udom);
1995: if ($home eq 'no_host') {
1996: return 'not_found';
1997: }
1998: my $answer=reply("sub:$fname",$home);
1999: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2000: $answer.=' by '.$home;
2001: }
2002: return $answer;
2003: }
2004:
2005: # -------------------------------------------------------------- Replicate file
2006:
2007: sub repcopy {
2008: my $filename=shift;
2009: $filename=~s/\/+/\//g;
2010: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
2011: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
2012: if ($filename=~m|^/home/httpd/html/userfiles/| or
2013: $filename=~m -^/*(uploaded|editupload)/-) {
2014: return &repcopy_userfile($filename);
2015: }
2016: $filename=~s/[\n\r]//g;
2017: my $transname="$filename.in.transfer";
2018: # FIXME: this should flock
2019: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2020: my $remoteurl=subscribe($filename);
2021: if ($remoteurl =~ /^con_lost by/) {
2022: &logthis("Subscribe returned $remoteurl: $filename");
2023: return 'unavailable';
2024: } elsif ($remoteurl eq 'not_found') {
2025: #&logthis("Subscribe returned not_found: $filename");
2026: return 'not_found';
2027: } elsif ($remoteurl =~ /^rejected by/) {
2028: &logthis("Subscribe returned $remoteurl: $filename");
2029: return 'forbidden';
2030: } elsif ($remoteurl eq 'directory') {
2031: return 'ok';
2032: } else {
2033: my $author=$filename;
2034: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2035: my ($udom,$uname)=split(/\//,$author);
2036: my $home=homeserver($uname,$udom);
2037: unless ($home eq $perlvar{'lonHostID'}) {
2038: my @parts=split(/\//,$filename);
2039: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2040: if ($path ne "$perlvar{'lonDocRoot'}/res") {
2041: &logthis("Malconfiguration for replication: $filename");
2042: return 'bad_request';
2043: }
2044: my $count;
2045: for ($count=5;$count<$#parts;$count++) {
2046: $path.="/$parts[$count]";
2047: if ((-e $path)!=1) {
2048: mkdir($path,0777);
2049: }
2050: }
2051: my $ua=new LWP::UserAgent;
2052: my $request=new HTTP::Request('GET',"$remoteurl");
2053: my $response=$ua->request($request,$transname);
2054: if ($response->is_error()) {
2055: unlink($transname);
2056: my $message=$response->status_line;
2057: &logthis("<font color=\"blue\">WARNING:"
2058: ." LWP get: $message: $filename</font>");
2059: return 'unavailable';
2060: } else {
2061: if ($remoteurl!~/\.meta$/) {
2062: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2063: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2064: if ($mresponse->is_error()) {
2065: unlink($filename.'.meta');
2066: &logthis(
2067: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2068: }
2069: }
2070: rename($transname,$filename);
2071: return 'ok';
2072: }
2073: }
2074: }
2075: }
2076:
2077: # ------------------------------------------------ Get server side include body
2078: sub ssi_body {
2079: my ($filelink,%form)=@_;
2080: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2081: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2082: }
2083: my $output='';
2084: my $response;
2085: if ($filelink=~/^https?\:/) {
2086: ($output,$response)=&externalssi($filelink);
2087: } else {
2088: $filelink .= $filelink=~/\?/ ? '&' : '?';
2089: $filelink .= 'inhibitmenu=yes';
2090: ($output,$response)=&ssi($filelink,%form);
2091: }
2092: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2093: $output=~s/^.*?\<body[^\>]*\>//si;
2094: $output=~s/\<\/body\s*\>.*?$//si;
2095: if (wantarray) {
2096: return ($output, $response);
2097: } else {
2098: return $output;
2099: }
2100: }
2101:
2102: # --------------------------------------------------------- Server Side Include
2103:
2104: sub absolute_url {
2105: my ($host_name) = @_;
2106: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2107: if ($host_name eq '') {
2108: $host_name = $ENV{'SERVER_NAME'};
2109: }
2110: return $protocol.$host_name;
2111: }
2112:
2113: #
2114: # Server side include.
2115: # Parameters:
2116: # fn Possibly encrypted resource name/id.
2117: # form Hash that describes how the rendering should be done
2118: # and other things.
2119: # Returns:
2120: # Scalar context: The content of the response.
2121: # Array context: 2 element list of the content and the full response object.
2122: #
2123: sub ssi {
2124:
2125: my ($fn,%form)=@_;
2126: my $ua=new LWP::UserAgent;
2127: my $request;
2128:
2129: $form{'no_update_last_known'}=1;
2130: &Apache::lonenc::check_encrypt(\$fn);
2131: if (%form) {
2132: $request=new HTTP::Request('POST',&absolute_url().$fn);
2133: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2134: } else {
2135: $request=new HTTP::Request('GET',&absolute_url().$fn);
2136: }
2137:
2138: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2139: my $response=$ua->request($request);
2140:
2141: if (wantarray) {
2142: return ($response->content, $response);
2143: } else {
2144: return $response->content;
2145: }
2146: }
2147:
2148: sub externalssi {
2149: my ($url)=@_;
2150: my $ua=new LWP::UserAgent;
2151: my $request=new HTTP::Request('GET',$url);
2152: my $response=$ua->request($request);
2153: if (wantarray) {
2154: return ($response->content, $response);
2155: } else {
2156: return $response->content;
2157: }
2158: }
2159:
2160: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2161:
2162: sub allowuploaded {
2163: my ($srcurl,$url)=@_;
2164: $url=&clutter(&declutter($url));
2165: my $dir=$url;
2166: $dir=~s/\/[^\/]+$//;
2167: my %httpref=();
2168: my $httpurl=&hreflocation('',$url);
2169: $httpref{'httpref.'.$httpurl}=$srcurl;
2170: &Apache::lonnet::appenv(\%httpref);
2171: }
2172:
2173: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2174: # input: action, courseID, current domain, intended
2175: # path to file, source of file, instruction to parse file for objects,
2176: # ref to hash for embedded objects,
2177: # ref to hash for codebase of java objects.
2178: #
2179: # output: url to file (if action was uploaddoc),
2180: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2181: #
2182: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2183: # course.
2184: #
2185: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2186: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2187: # course's home server.
2188: #
2189: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2190: # be copied from $source (current location) to
2191: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2192: # and will then be copied to
2193: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2194: # course's home server.
2195: #
2196: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2197: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2198: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2199: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2200: # in course's home server.
2201: #
2202:
2203: sub process_coursefile {
2204: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
2205: my $fetchresult;
2206: my $home=&homeserver($docuname,$docudom);
2207: if ($action eq 'propagate') {
2208: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2209: $home);
2210: } else {
2211: my $fpath = '';
2212: my $fname = $file;
2213: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2214: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2215: my $filepath = &build_filepath($fpath);
2216: if ($action eq 'copy') {
2217: if ($source eq '') {
2218: $fetchresult = 'no source file';
2219: return $fetchresult;
2220: } else {
2221: my $destination = $filepath.'/'.$fname;
2222: rename($source,$destination);
2223: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2224: $home);
2225: }
2226: } elsif ($action eq 'uploaddoc') {
2227: open(my $fh,'>'.$filepath.'/'.$fname);
2228: print $fh $env{'form.'.$source};
2229: close($fh);
2230: if ($parser eq 'parse') {
2231: my $mm = new File::MMagic;
2232: my $mime_type = $mm->checktype_filename($filepath.'/'.$fname);
2233: if ($mime_type eq 'text/html') {
2234: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2235: unless ($parse_result eq 'ok') {
2236: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2237: }
2238: }
2239: }
2240: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2241: $home);
2242: if ($fetchresult eq 'ok') {
2243: return '/uploaded/'.$fpath.'/'.$fname;
2244: } else {
2245: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2246: ' to host '.$home.': '.$fetchresult);
2247: return '/adm/notfound.html';
2248: }
2249: }
2250: }
2251: unless ( $fetchresult eq 'ok') {
2252: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2253: ' to host '.$home.': '.$fetchresult);
2254: }
2255: return $fetchresult;
2256: }
2257:
2258: sub build_filepath {
2259: my ($fpath) = @_;
2260: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2261: unless ($fpath eq '') {
2262: my @parts=split('/',$fpath);
2263: foreach my $part (@parts) {
2264: $filepath.= '/'.$part;
2265: if ((-e $filepath)!=1) {
2266: mkdir($filepath,0777);
2267: }
2268: }
2269: }
2270: return $filepath;
2271: }
2272:
2273: sub store_edited_file {
2274: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2275: my $file = $primary_url;
2276: $file =~ s#^/uploaded/$docudom/$docuname/##;
2277: my $fpath = '';
2278: my $fname = $file;
2279: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2280: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2281: my $filepath = &build_filepath($fpath);
2282: open(my $fh,'>'.$filepath.'/'.$fname);
2283: print $fh $content;
2284: close($fh);
2285: my $home=&homeserver($docuname,$docudom);
2286: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2287: $home);
2288: if ($$fetchresult eq 'ok') {
2289: return '/uploaded/'.$fpath.'/'.$fname;
2290: } else {
2291: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2292: ' to host '.$home.': '.$$fetchresult);
2293: return '/adm/notfound.html';
2294: }
2295: }
2296:
2297: sub clean_filename {
2298: my ($fname,$args)=@_;
2299: # Replace Windows backslashes by forward slashes
2300: $fname=~s/\\/\//g;
2301: if (!$args->{'keep_path'}) {
2302: # Get rid of everything but the actual filename
2303: $fname=~s/^.*\/([^\/]+)$/$1/;
2304: }
2305: # Replace spaces by underscores
2306: $fname=~s/\s+/\_/g;
2307: # Replace all other weird characters by nothing
2308: $fname=~s{[^/\w\.\-]}{}g;
2309: # Replace all .\d. sequences with _\d. so they no longer look like version
2310: # numbers
2311: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2312: return $fname;
2313: }
2314: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2315: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2316: # image with the same aspect ratio as the original, but with dimensions which do
2317: # not exceed $resizewidth and $resizeheight.
2318:
2319: sub resizeImage {
2320: my ($img_path,$resizewidth,$resizeheight) = @_;
2321: my $ima = Image::Magick->new;
2322: my $resized;
2323: if (-e $img_path) {
2324: $ima->Read($img_path);
2325: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2326: my $width = $ima->Get('width');
2327: my $height = $ima->Get('height');
2328: if ($width > $resizewidth) {
2329: my $factor = $width/$resizewidth;
2330: my $newheight = $height/$factor;
2331: $ima->Scale(width=>$resizewidth,height=>$newheight);
2332: $resized = 1;
2333: }
2334: }
2335: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2336: my $width = $ima->Get('width');
2337: my $height = $ima->Get('height');
2338: if ($height > $resizeheight) {
2339: my $factor = $height/$resizeheight;
2340: my $newwidth = $width/$factor;
2341: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2342: $resized = 1;
2343: }
2344: }
2345: if ($resized) {
2346: $ima->Write($img_path);
2347: }
2348: }
2349: return;
2350: }
2351:
2352: # --------------- Take an uploaded file and put it into the userfiles directory
2353: # input: $formname - the contents of the file are in $env{"form.$formname"}
2354: # the desired filenam is in $env{"form.$formname.filename"}
2355: # $coursedoc - if true up to the current course
2356: # if false
2357: # $subdir - directory in userfile to store the file into
2358: # $parser - instruction to parse file for objects ($parser = parse)
2359: # $allfiles - reference to hash for embedded objects
2360: # $codebase - reference to hash for codebase of java objects
2361: # $desuname - username for permanent storage of uploaded file
2362: # $dsetudom - domain for permanaent storage of uploaded file
2363: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2364: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2365: # $resizewidth - width (pixels) to which to resize uploaded image
2366: # $resizeheight - height (pixels) to which to resize uploaded image
2367: #
2368: # output: url of file in userspace, or error: <message>
2369: # or /adm/notfound.html if failure to upload occurse
2370:
2371: sub userfileupload {
2372: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
2373: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight)=@_;
2374: if (!defined($subdir)) { $subdir='unknown'; }
2375: my $fname=$env{'form.'.$formname.'.filename'};
2376: $fname=&clean_filename($fname);
2377: # See if there is anything left
2378: unless ($fname) { return 'error: no uploaded file'; }
2379: chop($env{'form.'.$formname});
2380: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2381: my $now = time;
2382: my $filepath = 'tmp/helprequests/'.$now;
2383: my @parts=split(/\//,$filepath);
2384: my $fullpath = $perlvar{'lonDaemons'};
2385: for (my $i=0;$i<@parts;$i++) {
2386: $fullpath .= '/'.$parts[$i];
2387: if ((-e $fullpath)!=1) {
2388: mkdir($fullpath,0777);
2389: }
2390: }
2391: open(my $fh,'>'.$fullpath.'/'.$fname);
2392: print $fh $env{'form.'.$formname};
2393: close($fh);
2394: return $fullpath.'/'.$fname;
2395: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2396: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2397: '_'.$env{'user.domain'}.'/pending';
2398: my @parts=split(/\//,$filepath);
2399: my $fullpath = $perlvar{'lonDaemons'};
2400: for (my $i=0;$i<@parts;$i++) {
2401: $fullpath .= '/'.$parts[$i];
2402: if ((-e $fullpath)!=1) {
2403: mkdir($fullpath,0777);
2404: }
2405: }
2406: open(my $fh,'>'.$fullpath.'/'.$fname);
2407: print $fh $env{'form.'.$formname};
2408: close($fh);
2409: return $fullpath.'/'.$fname;
2410: }
2411: if ($subdir eq 'scantron') {
2412: $fname = 'scantron_orig_'.$fname;
2413: } else {
2414: # Create the directory if not present
2415: $fname="$subdir/$fname";
2416: }
2417: if ($coursedoc) {
2418: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2419: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2420: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2421: return &finishuserfileupload($docuname,$docudom,
2422: $formname,$fname,$parser,$allfiles,
2423: $codebase,$thumbwidth,$thumbheight,
2424: $resizewidth,$resizeheight);
2425: } else {
2426: $fname=$env{'form.folder'}.'/'.$fname;
2427: return &process_coursefile('uploaddoc',$docuname,$docudom,
2428: $fname,$formname,$parser,
2429: $allfiles,$codebase);
2430: }
2431: } elsif (defined($destuname)) {
2432: my $docuname=$destuname;
2433: my $docudom=$destudom;
2434: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2435: $parser,$allfiles,$codebase,
2436: $thumbwidth,$thumbheight,
2437: $resizewidth,$resizeheight);
2438:
2439: } else {
2440: my $docuname=$env{'user.name'};
2441: my $docudom=$env{'user.domain'};
2442: if (exists($env{'form.group'})) {
2443: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2444: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2445: }
2446: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2447: $parser,$allfiles,$codebase,
2448: $thumbwidth,$thumbheight,
2449: $resizewidth,$resizeheight);
2450: }
2451: }
2452:
2453: sub finishuserfileupload {
2454: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2455: $thumbwidth,$thumbheight,$resizewidth,$resizeheight) = @_;
2456: my $path=$docudom.'/'.$docuname.'/';
2457: my $filepath=$perlvar{'lonDocRoot'};
2458:
2459: my ($fnamepath,$file,$fetchthumb);
2460: $file=$fname;
2461: if ($fname=~m|/|) {
2462: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2463: $path.=$fnamepath.'/';
2464: }
2465: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2466: my $count;
2467: for ($count=4;$count<=$#parts;$count++) {
2468: $filepath.="/$parts[$count]";
2469: if ((-e $filepath)!=1) {
2470: mkdir($filepath,0777);
2471: }
2472: }
2473:
2474: # Save the file
2475: {
2476: if (!open(FH,'>'.$filepath.'/'.$file)) {
2477: &logthis('Failed to create '.$filepath.'/'.$file);
2478: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2479: return '/adm/notfound.html';
2480: }
2481: if (!print FH ($env{'form.'.$formname})) {
2482: &logthis('Failed to write to '.$filepath.'/'.$file);
2483: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2484: return '/adm/notfound.html';
2485: }
2486: close(FH);
2487: if ($resizewidth && $resizeheight) {
2488: my $mm = new File::MMagic;
2489: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2490: if ($mime_type =~ m{^image/}) {
2491: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2492: }
2493: }
2494: }
2495: if ($parser eq 'parse') {
2496: my $mm = new File::MMagic;
2497: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2498: if ($mime_type eq 'text/html') {
2499: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2500: $allfiles,$codebase);
2501: unless ($parse_result eq 'ok') {
2502: &logthis('Failed to parse '.$filepath.$file.
2503: ' for embedded media: '.$parse_result);
2504: }
2505: }
2506: }
2507: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2508: my $input = $filepath.'/'.$file;
2509: my $output = $filepath.'/'.'tn-'.$file;
2510: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2511: system("convert -sample $thumbsize $input $output");
2512: if (-e $filepath.'/'.'tn-'.$file) {
2513: $fetchthumb = 1;
2514: }
2515: }
2516:
2517: # Notify homeserver to grep it
2518: #
2519: my $docuhome=&homeserver($docuname,$docudom);
2520: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2521: if ($fetchresult eq 'ok') {
2522: if ($fetchthumb) {
2523: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2524: if ($thumbresult ne 'ok') {
2525: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2526: $docuhome.': '.$thumbresult);
2527: }
2528: }
2529: #
2530: # Return the URL to it
2531: return '/uploaded/'.$path.$file;
2532: } else {
2533: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2534: ': '.$fetchresult);
2535: return '/adm/notfound.html';
2536: }
2537: }
2538:
2539: sub extract_embedded_items {
2540: my ($fullpath,$allfiles,$codebase,$content) = @_;
2541: my @state = ();
2542: my %javafiles = (
2543: codebase => '',
2544: code => '',
2545: archive => ''
2546: );
2547: my %mediafiles = (
2548: src => '',
2549: movie => '',
2550: );
2551: my $p;
2552: if ($content) {
2553: $p = HTML::LCParser->new($content);
2554: } else {
2555: $p = HTML::LCParser->new($fullpath);
2556: }
2557: while (my $t=$p->get_token()) {
2558: if ($t->[0] eq 'S') {
2559: my ($tagname, $attr) = ($t->[1],$t->[2]);
2560: push(@state, $tagname);
2561: if (lc($tagname) eq 'allow') {
2562: &add_filetype($allfiles,$attr->{'src'},'src');
2563: }
2564: if (lc($tagname) eq 'img') {
2565: &add_filetype($allfiles,$attr->{'src'},'src');
2566: }
2567: if (lc($tagname) eq 'a') {
2568: &add_filetype($allfiles,$attr->{'href'},'href');
2569: }
2570: if (lc($tagname) eq 'script') {
2571: if ($attr->{'archive'} =~ /\.jar$/i) {
2572: &add_filetype($allfiles,$attr->{'archive'},'archive');
2573: } else {
2574: &add_filetype($allfiles,$attr->{'src'},'src');
2575: }
2576: }
2577: if (lc($tagname) eq 'link') {
2578: if (lc($attr->{'rel'}) eq 'stylesheet') {
2579: &add_filetype($allfiles,$attr->{'href'},'href');
2580: }
2581: }
2582: if (lc($tagname) eq 'object' ||
2583: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2584: foreach my $item (keys(%javafiles)) {
2585: $javafiles{$item} = '';
2586: }
2587: }
2588: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2589: my $name = lc($attr->{'name'});
2590: foreach my $item (keys(%javafiles)) {
2591: if ($name eq $item) {
2592: $javafiles{$item} = $attr->{'value'};
2593: last;
2594: }
2595: }
2596: foreach my $item (keys(%mediafiles)) {
2597: if ($name eq $item) {
2598: &add_filetype($allfiles, $attr->{'value'}, 'value');
2599: last;
2600: }
2601: }
2602: }
2603: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2604: foreach my $item (keys(%javafiles)) {
2605: if ($attr->{$item}) {
2606: $javafiles{$item} = $attr->{$item};
2607: last;
2608: }
2609: }
2610: foreach my $item (keys(%mediafiles)) {
2611: if ($attr->{$item}) {
2612: &add_filetype($allfiles,$attr->{$item},$item);
2613: last;
2614: }
2615: }
2616: }
2617: } elsif ($t->[0] eq 'E') {
2618: my ($tagname) = ($t->[1]);
2619: if ($javafiles{'codebase'} ne '') {
2620: $javafiles{'codebase'} .= '/';
2621: }
2622: if (lc($tagname) eq 'applet' ||
2623: lc($tagname) eq 'object' ||
2624: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2625: ) {
2626: foreach my $item (keys(%javafiles)) {
2627: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2628: my $file=$javafiles{'codebase'}.$javafiles{$item};
2629: &add_filetype($allfiles,$file,$item);
2630: }
2631: }
2632: }
2633: pop @state;
2634: }
2635: }
2636: return 'ok';
2637: }
2638:
2639: sub add_filetype {
2640: my ($allfiles,$file,$type)=@_;
2641: if (exists($allfiles->{$file})) {
2642: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2643: push(@{$allfiles->{$file}}, &escape($type));
2644: }
2645: } else {
2646: @{$allfiles->{$file}} = (&escape($type));
2647: }
2648: }
2649:
2650: sub removeuploadedurl {
2651: my ($url)=@_;
2652: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2653: return &removeuserfile($uname,$udom,$fname);
2654: }
2655:
2656: sub removeuserfile {
2657: my ($docuname,$docudom,$fname)=@_;
2658: my $home=&homeserver($docuname,$docudom);
2659: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2660: if ($result eq 'ok') {
2661: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2662: my $metafile = $fname.'.meta';
2663: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2664: my $url = "/uploaded/$docudom/$docuname/$fname";
2665: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2666: my $sqlresult =
2667: &update_portfolio_table($docuname,$docudom,$file,
2668: 'portfolio_metadata',$group,
2669: 'delete');
2670: }
2671: }
2672: return $result;
2673: }
2674:
2675: sub mkdiruserfile {
2676: my ($docuname,$docudom,$dir)=@_;
2677: my $home=&homeserver($docuname,$docudom);
2678: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2679: }
2680:
2681: sub renameuserfile {
2682: my ($docuname,$docudom,$old,$new)=@_;
2683: my $home=&homeserver($docuname,$docudom);
2684: my $result = &reply("renameuserfile:$docudom:$docuname:".
2685: &escape("$old").':'.&escape("$new"),$home);
2686: if ($result eq 'ok') {
2687: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2688: my $oldmeta = $old.'.meta';
2689: my $newmeta = $new.'.meta';
2690: my $metaresult =
2691: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2692: my $url = "/uploaded/$docudom/$docuname/$old";
2693: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2694: my $sqlresult =
2695: &update_portfolio_table($docuname,$docudom,$file,
2696: 'portfolio_metadata',$group,
2697: 'delete');
2698: }
2699: }
2700: return $result;
2701: }
2702:
2703: # ------------------------------------------------------------------------- Log
2704:
2705: sub log {
2706: my ($dom,$nam,$hom,$what)=@_;
2707: return critical("log:$dom:$nam:$what",$hom);
2708: }
2709:
2710: # ------------------------------------------------------------------ Course Log
2711: #
2712: # This routine flushes several buffers of non-mission-critical nature
2713: #
2714:
2715: sub flushcourselogs {
2716: &logthis('Flushing log buffers');
2717: #
2718: # course logs
2719: # This is a log of all transactions in a course, which can be used
2720: # for data mining purposes
2721: #
2722: # It also collects the courseid database, which lists last transaction
2723: # times and course titles for all courseids
2724: #
2725: my %courseidbuffer=();
2726: foreach my $crsid (keys(%courselogs)) {
2727: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2728: &escape($courselogs{$crsid}),
2729: $coursehombuf{$crsid}) eq 'ok') {
2730: delete $courselogs{$crsid};
2731: } else {
2732: &logthis('Failed to flush log buffer for '.$crsid);
2733: if (length($courselogs{$crsid})>40000) {
2734: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2735: " exceeded maximum size, deleting.</font>");
2736: delete $courselogs{$crsid};
2737: }
2738: }
2739: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2740: 'description' => $coursedescrbuf{$crsid},
2741: 'inst_code' => $courseinstcodebuf{$crsid},
2742: 'type' => $coursetypebuf{$crsid},
2743: 'owner' => $courseownerbuf{$crsid},
2744: };
2745: }
2746: #
2747: # Write course id database (reverse lookup) to homeserver of courses
2748: # Is used in pickcourse
2749: #
2750: foreach my $crs_home (keys(%courseidbuffer)) {
2751: my $response = &courseidput(&host_domain($crs_home),
2752: $courseidbuffer{$crs_home},
2753: $crs_home,'timeonly');
2754: }
2755: #
2756: # File accesses
2757: # Writes to the dynamic metadata of resources to get hit counts, etc.
2758: #
2759: foreach my $entry (keys(%accesshash)) {
2760: if ($entry =~ /___count$/) {
2761: my ($dom,$name);
2762: ($dom,$name,undef)=
2763: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2764: if (! defined($dom) || $dom eq '' ||
2765: ! defined($name) || $name eq '') {
2766: my $cid = $env{'request.course.id'};
2767: $dom = $env{'request.'.$cid.'.domain'};
2768: $name = $env{'request.'.$cid.'.num'};
2769: }
2770: my $value = $accesshash{$entry};
2771: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2772: my %temphash=($url => $value);
2773: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2774: if ($result eq 'ok') {
2775: delete $accesshash{$entry};
2776: } elsif ($result eq 'unknown_cmd') {
2777: # Target server has old code running on it.
2778: my %temphash=($entry => $value);
2779: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2780: delete $accesshash{$entry};
2781: }
2782: }
2783: } else {
2784: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2785: my %temphash=($entry => $accesshash{$entry});
2786: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2787: delete $accesshash{$entry};
2788: }
2789: }
2790: }
2791: #
2792: # Roles
2793: # Reverse lookup of user roles for course faculty/staff and co-authorship
2794: #
2795: foreach my $entry (keys(%userrolehash)) {
2796: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2797: split(/\:/,$entry);
2798: if (&Apache::lonnet::put('nohist_userroles',
2799: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2800: $rudom,$runame) eq 'ok') {
2801: delete $userrolehash{$entry};
2802: }
2803: }
2804: #
2805: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2806: #
2807: my %domrolebuffer = ();
2808: foreach my $entry (keys(%domainrolehash)) {
2809: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2810: if ($domrolebuffer{$rudom}) {
2811: $domrolebuffer{$rudom}.='&'.&escape($entry).
2812: '='.&escape($domainrolehash{$entry});
2813: } else {
2814: $domrolebuffer{$rudom}.=&escape($entry).
2815: '='.&escape($domainrolehash{$entry});
2816: }
2817: delete $domainrolehash{$entry};
2818: }
2819: foreach my $dom (keys(%domrolebuffer)) {
2820: my %servers = &get_servers($dom,'library');
2821: foreach my $tryserver (keys(%servers)) {
2822: unless (&reply('domroleput:'.$dom.':'.
2823: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2824: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2825: }
2826: }
2827: }
2828: $dumpcount++;
2829: }
2830:
2831: sub courselog {
2832: my $what=shift;
2833: $what=time.':'.$what;
2834: unless ($env{'request.course.id'}) { return ''; }
2835: $coursedombuf{$env{'request.course.id'}}=
2836: $env{'course.'.$env{'request.course.id'}.'.domain'};
2837: $coursenumbuf{$env{'request.course.id'}}=
2838: $env{'course.'.$env{'request.course.id'}.'.num'};
2839: $coursehombuf{$env{'request.course.id'}}=
2840: $env{'course.'.$env{'request.course.id'}.'.home'};
2841: $coursedescrbuf{$env{'request.course.id'}}=
2842: $env{'course.'.$env{'request.course.id'}.'.description'};
2843: $courseinstcodebuf{$env{'request.course.id'}}=
2844: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2845: $courseownerbuf{$env{'request.course.id'}}=
2846: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2847: $coursetypebuf{$env{'request.course.id'}}=
2848: $env{'course.'.$env{'request.course.id'}.'.type'};
2849: if (defined $courselogs{$env{'request.course.id'}}) {
2850: $courselogs{$env{'request.course.id'}}.='&'.$what;
2851: } else {
2852: $courselogs{$env{'request.course.id'}}.=$what;
2853: }
2854: if (length($courselogs{$env{'request.course.id'}})>4048) {
2855: &flushcourselogs();
2856: }
2857: }
2858:
2859: sub courseacclog {
2860: my $fnsymb=shift;
2861: unless ($env{'request.course.id'}) { return ''; }
2862: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2863: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2864: $what.=':POST';
2865: # FIXME: Probably ought to escape things....
2866: foreach my $key (keys(%env)) {
2867: if ($key=~/^form\.(.*)/) {
2868: my $formitem = $1;
2869: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2870: $what.=':'.$formitem.'='.$env{$key};
2871: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2872: $what.=':'.$formitem.'='.$env{$key};
2873: }
2874: }
2875: }
2876: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2877: # FIXME: We should not be depending on a form parameter that someone
2878: # editing lonsearchcat.pm might change in the future.
2879: if ($env{'form.phase'} eq 'course_search') {
2880: $what.= ':POST';
2881: # FIXME: Probably ought to escape things....
2882: foreach my $element ('courseexp','crsfulltext','crsrelated',
2883: 'crsdiscuss') {
2884: $what.=':'.$element.'='.$env{'form.'.$element};
2885: }
2886: }
2887: }
2888: &courselog($what);
2889: }
2890:
2891: sub countacc {
2892: my $url=&declutter(shift);
2893: return if (! defined($url) || $url eq '');
2894: unless ($env{'request.course.id'}) { return ''; }
2895: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2896: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2897: $accesshash{$key}++;
2898: }
2899:
2900: sub linklog {
2901: my ($from,$to)=@_;
2902: $from=&declutter($from);
2903: $to=&declutter($to);
2904: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2905: $accesshash{$to.'___'.$from.'___goto'}=1;
2906: }
2907:
2908: sub userrolelog {
2909: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2910: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2911: ($trole=~/^in/) || ($trole=~/^cc/) ||
2912: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2913: ($trole=~/^ta/) || ($trole=~/^co/)) {
2914: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2915: $userrolehash
2916: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2917: =$tend.':'.$tstart;
2918: }
2919: if (($env{'request.role'} =~ /dc\./) &&
2920: (($trole=~/^au/) || ($trole=~/^in/) ||
2921: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2922: ($trole=~/^cr/) || ($trole=~/^ta/) ||
2923: ($trole=~/^co/))) {
2924: $userrolehash
2925: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2926: =$tend.':'.$tstart;
2927: }
2928: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2929: ($trole=~/^li/) || ($trole=~/^li/) ||
2930: ($trole=~/^au/) || ($trole=~/^dg/) ||
2931: ($trole=~/^sc/)) {
2932: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2933: $domainrolehash
2934: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2935: = $tend.':'.$tstart;
2936: }
2937: }
2938:
2939: sub courserolelog {
2940: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2941: if (($trole eq 'cc') || ($trole eq 'in') ||
2942: ($trole eq 'ep') || ($trole eq 'ad') ||
2943: ($trole eq 'ta') || ($trole eq 'st') ||
2944: ($trole=~/^cr/) || ($trole eq 'gr') ||
2945: ($trole eq 'co')) {
2946: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2947: my $cdom = $1;
2948: my $cnum = $2;
2949: my $sec = $3;
2950: my $namespace = 'rolelog';
2951: my %storehash = (
2952: role => $trole,
2953: start => $tstart,
2954: end => $tend,
2955: selfenroll => $selfenroll,
2956: context => $context,
2957: );
2958: if ($trole eq 'gr') {
2959: $namespace = 'groupslog';
2960: $storehash{'group'} = $sec;
2961: } else {
2962: $storehash{'section'} = $sec;
2963: }
2964: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2965: if (($trole ne 'st') || ($sec ne '')) {
2966: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
2967: }
2968: }
2969: }
2970: return;
2971: }
2972:
2973: sub get_course_adv_roles {
2974: my ($cid,$codes) = @_;
2975: $cid=$env{'request.course.id'} unless (defined($cid));
2976: my %coursehash=&coursedescription($cid);
2977: my $crstype = &Apache::loncommon::course_type($cid);
2978: my %nothide=();
2979: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2980: if ($user !~ /:/) {
2981: $nothide{join(':',split(/[\@]/,$user))}=1;
2982: } else {
2983: $nothide{$user}=1;
2984: }
2985: }
2986: my %returnhash=();
2987: my %dumphash=
2988: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2989: my $now=time;
2990: my %privileged;
2991: foreach my $entry (keys(%dumphash)) {
2992: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2993: if (($tstart) && ($tstart<0)) { next; }
2994: if (($tend) && ($tend<$now)) { next; }
2995: if (($tstart) && ($now<$tstart)) { next; }
2996: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2997: if ($username eq '' || $domain eq '') { next; }
2998: unless (ref($privileged{$domain}) eq 'HASH') {
2999: my %dompersonnel =
3000: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3001: $privileged{$domain} = {};
3002: foreach my $server (keys(%dompersonnel)) {
3003: if (ref($dompersonnel{$server}) eq 'HASH') {
3004: foreach my $user (keys(%{$dompersonnel{$server}})) {
3005: my ($trole,$uname,$udom) = split(/:/,$user);
3006: $privileged{$udom}{$uname} = 1;
3007: }
3008: }
3009: }
3010: }
3011: if ((exists($privileged{$domain}{$username})) &&
3012: (!$nothide{$username.':'.$domain})) { next; }
3013: if ($role eq 'cr') { next; }
3014: if ($codes) {
3015: if ($section) { $role .= ':'.$section; }
3016: if ($returnhash{$role}) {
3017: $returnhash{$role}.=','.$username.':'.$domain;
3018: } else {
3019: $returnhash{$role}=$username.':'.$domain;
3020: }
3021: } else {
3022: my $key=&plaintext($role,$crstype);
3023: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3024: if ($returnhash{$key}) {
3025: $returnhash{$key}.=','.$username.':'.$domain;
3026: } else {
3027: $returnhash{$key}=$username.':'.$domain;
3028: }
3029: }
3030: }
3031: return %returnhash;
3032: }
3033:
3034: sub get_my_roles {
3035: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3036: unless (defined($uname)) { $uname=$env{'user.name'}; }
3037: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3038: my (%dumphash,%nothide);
3039: if ($context eq 'userroles') {
3040: my $extra = &freeze_escape({'skipcheck' => 1});
3041: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3042: } else {
3043: %dumphash=
3044: &dump('nohist_userroles',$udom,$uname);
3045: if ($hidepriv) {
3046: my %coursehash=&coursedescription($udom.'_'.$uname);
3047: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3048: if ($user !~ /:/) {
3049: $nothide{join(':',split(/[\@]/,$user))} = 1;
3050: } else {
3051: $nothide{$user} = 1;
3052: }
3053: }
3054: }
3055: }
3056: my %returnhash=();
3057: my $now=time;
3058: my %privileged;
3059: foreach my $entry (keys(%dumphash)) {
3060: my ($role,$tend,$tstart);
3061: if ($context eq 'userroles') {
3062: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3063: } else {
3064: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3065: }
3066: if (($tstart) && ($tstart<0)) { next; }
3067: my $status = 'active';
3068: if (($tend) && ($tend<=$now)) {
3069: $status = 'previous';
3070: }
3071: if (($tstart) && ($now<$tstart)) {
3072: $status = 'future';
3073: }
3074: if (ref($types) eq 'ARRAY') {
3075: if (!grep(/^\Q$status\E$/,@{$types})) {
3076: next;
3077: }
3078: } else {
3079: if ($status ne 'active') {
3080: next;
3081: }
3082: }
3083: my ($rolecode,$username,$domain,$section,$area);
3084: if ($context eq 'userroles') {
3085: ($area,$rolecode) = split(/_/,$entry);
3086: (undef,$domain,$username,$section) = split(/\//,$area);
3087: } else {
3088: ($role,$username,$domain,$section) = split(/\:/,$entry);
3089: }
3090: if (ref($roledoms) eq 'ARRAY') {
3091: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3092: next;
3093: }
3094: }
3095: if (ref($roles) eq 'ARRAY') {
3096: if (!grep(/^\Q$role\E$/,@{$roles})) {
3097: if ($role =~ /^cr\//) {
3098: if (!grep(/^cr$/,@{$roles})) {
3099: next;
3100: }
3101: } else {
3102: next;
3103: }
3104: }
3105: }
3106: if ($hidepriv) {
3107: if ($context eq 'userroles') {
3108: if ((&privileged($username,$domain)) &&
3109: (!$nothide{$username.':'.$domain})) {
3110: next;
3111: }
3112: } else {
3113: unless (ref($privileged{$domain}) eq 'HASH') {
3114: my %dompersonnel =
3115: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3116: $privileged{$domain} = {};
3117: if (keys(%dompersonnel)) {
3118: foreach my $server (keys(%dompersonnel)) {
3119: if (ref($dompersonnel{$server}) eq 'HASH') {
3120: foreach my $user (keys(%{$dompersonnel{$server}})) {
3121: my ($trole,$uname,$udom) = split(/:/,$user);
3122: $privileged{$udom}{$uname} = $trole;
3123: }
3124: }
3125: }
3126: }
3127: }
3128: if (exists($privileged{$domain}{$username})) {
3129: if (!$nothide{$username.':'.$domain}) {
3130: next;
3131: }
3132: }
3133: }
3134: }
3135: if ($withsec) {
3136: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3137: $tstart.':'.$tend;
3138: } else {
3139: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3140: }
3141: }
3142: return %returnhash;
3143: }
3144:
3145: # ----------------------------------------------------- Frontpage Announcements
3146: #
3147: #
3148:
3149: sub postannounce {
3150: my ($server,$text)=@_;
3151: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3152: unless ($text=~/\w/) { $text=''; }
3153: return &reply('setannounce:'.&escape($text),$server);
3154: }
3155:
3156: sub getannounce {
3157:
3158: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3159: my $announcement='';
3160: while (my $line = <$fh>) { $announcement .= $line; }
3161: close($fh);
3162: if ($announcement=~/\w/) {
3163: return
3164: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3165: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3166: } else {
3167: return '';
3168: }
3169: } else {
3170: return '';
3171: }
3172: }
3173:
3174: # ---------------------------------------------------------- Course ID routines
3175: # Deal with domain's nohist_courseid.db files
3176: #
3177:
3178: sub courseidput {
3179: my ($domain,$storehash,$coursehome,$caller) = @_;
3180: return unless (ref($storehash) eq 'HASH');
3181: my $outcome;
3182: if ($caller eq 'timeonly') {
3183: my $cids = '';
3184: foreach my $item (keys(%$storehash)) {
3185: $cids.=&escape($item).'&';
3186: }
3187: $cids=~s/\&$//;
3188: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3189: $coursehome);
3190: } else {
3191: my $items = '';
3192: foreach my $item (keys(%$storehash)) {
3193: $items.= &escape($item).'='.
3194: &freeze_escape($$storehash{$item}).'&';
3195: }
3196: $items=~s/\&$//;
3197: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3198: $coursehome);
3199: }
3200: if ($outcome eq 'unknown_cmd') {
3201: my $what;
3202: foreach my $cid (keys(%$storehash)) {
3203: $what .= &escape($cid).'=';
3204: foreach my $item ('description','inst_code','owner','type') {
3205: $what .= &escape($storehash->{$cid}{$item}).':';
3206: }
3207: $what =~ s/\:$/&/;
3208: }
3209: $what =~ s/\&$//;
3210: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3211: } else {
3212: return $outcome;
3213: }
3214: }
3215:
3216: sub courseiddump {
3217: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3218: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3219: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3220: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3221: my $as_hash = 1;
3222: my %returnhash;
3223: if (!$domfilter) { $domfilter=''; }
3224: my %libserv = &all_library();
3225: foreach my $tryserver (keys(%libserv)) {
3226: if ( ( $hostidflag == 1
3227: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3228: || (!defined($hostidflag)) ) {
3229:
3230: if (($domfilter eq '') ||
3231: (&host_domain($tryserver) eq $domfilter)) {
3232: my $rep =
3233: &reply('courseiddump:'.&host_domain($tryserver).':'.
3234: $sincefilter.':'.&escape($descfilter).':'.
3235: &escape($instcodefilter).':'.&escape($ownerfilter).
3236: ':'.&escape($coursefilter).':'.&escape($typefilter).
3237: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3238: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3239: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3240: &escape($cc_clone).':'.$cloneonly.':'.
3241: &escape($createdbefore).':'.&escape($createdafter).':'.
3242: &escape($creationcontext).':'.$domcloner,
3243: $tryserver);
3244: my @pairs=split(/\&/,$rep);
3245: foreach my $item (@pairs) {
3246: my ($key,$value)=split(/\=/,$item,2);
3247: $key = &unescape($key);
3248: next if ($key =~ /^error: 2 /);
3249: my $result = &thaw_unescape($value);
3250: if (ref($result) eq 'HASH') {
3251: $returnhash{$key}=$result;
3252: } else {
3253: my @responses = split(/:/,$value);
3254: my @items = ('description','inst_code','owner','type');
3255: for (my $i=0; $i<@responses; $i++) {
3256: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3257: }
3258: }
3259: }
3260: }
3261: }
3262: }
3263: return %returnhash;
3264: }
3265:
3266: sub courselastaccess {
3267: my ($cdom,$cnum,$hostidref) = @_;
3268: my %returnhash;
3269: if ($cdom && $cnum) {
3270: my $chome = &homeserver($cnum,$cdom);
3271: if ($chome ne 'no_host') {
3272: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3273: &extract_lastaccess(\%returnhash,$rep);
3274: }
3275: } else {
3276: if (!$cdom) { $cdom=''; }
3277: my %libserv = &all_library();
3278: foreach my $tryserver (keys(%libserv)) {
3279: if (ref($hostidref) eq 'ARRAY') {
3280: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3281: }
3282: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3283: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3284: &extract_lastaccess(\%returnhash,$rep);
3285: }
3286: }
3287: }
3288: return %returnhash;
3289: }
3290:
3291: sub extract_lastaccess {
3292: my ($returnhash,$rep) = @_;
3293: if (ref($returnhash) eq 'HASH') {
3294: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3295: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3296: $rep eq '') {
3297: my @pairs=split(/\&/,$rep);
3298: foreach my $item (@pairs) {
3299: my ($key,$value)=split(/\=/,$item,2);
3300: $key = &unescape($key);
3301: next if ($key =~ /^error: 2 /);
3302: $returnhash->{$key} = &thaw_unescape($value);
3303: }
3304: }
3305: }
3306: return;
3307: }
3308:
3309: # ---------------------------------------------------------- DC e-mail
3310:
3311: sub dcmailput {
3312: my ($domain,$msgid,$message,$server)=@_;
3313: my $status = &Apache::lonnet::critical(
3314: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3315: &escape($message),$server);
3316: return $status;
3317: }
3318:
3319: sub dcmaildump {
3320: my ($dom,$startdate,$enddate,$senders) = @_;
3321: my %returnhash=();
3322:
3323: if (defined(&domain($dom,'primary'))) {
3324: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3325: &escape($enddate).':';
3326: my @esc_senders=map { &escape($_)} @$senders;
3327: $cmd.=&escape(join('&',@esc_senders));
3328: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3329: my ($key,$value) = split(/\=/,$line,2);
3330: if (($key) && ($value)) {
3331: $returnhash{&unescape($key)} = &unescape($value);
3332: }
3333: }
3334: }
3335: return %returnhash;
3336: }
3337: # ---------------------------------------------------------- Domain roles
3338:
3339: sub get_domain_roles {
3340: my ($dom,$roles,$startdate,$enddate)=@_;
3341: if ((!defined($startdate)) || ($startdate eq '')) {
3342: $startdate = '.';
3343: }
3344: if ((!defined($enddate)) || ($enddate eq '')) {
3345: $enddate = '.';
3346: }
3347: my $rolelist;
3348: if (ref($roles) eq 'ARRAY') {
3349: $rolelist = join(':',@{$roles});
3350: }
3351: my %personnel = ();
3352:
3353: my %servers = &get_servers($dom,'library');
3354: foreach my $tryserver (keys(%servers)) {
3355: %{$personnel{$tryserver}}=();
3356: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3357: &escape($startdate).':'.
3358: &escape($enddate).':'.
3359: &escape($rolelist), $tryserver))) {
3360: my ($key,$value) = split(/\=/,$line,2);
3361: if (($key) && ($value)) {
3362: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3363: }
3364: }
3365: }
3366: return %personnel;
3367: }
3368:
3369: # ----------------------------------------------------------- Interval timing
3370:
3371: sub get_first_access {
3372: my ($type,$argsymb)=@_;
3373: my ($symb,$courseid,$udom,$uname)=&whichuser();
3374: if ($argsymb) { $symb=$argsymb; }
3375: my ($map,$id,$res)=&decode_symb($symb);
3376: if ($type eq 'course') {
3377: $res='course';
3378: } elsif ($type eq 'map') {
3379: $res=&symbread($map);
3380: } else {
3381: $res=$symb;
3382: }
3383: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3384: return $times{"$courseid\0$res"};
3385: }
3386:
3387: sub set_first_access {
3388: my ($type)=@_;
3389: my ($symb,$courseid,$udom,$uname)=&whichuser();
3390: my ($map,$id,$res)=&decode_symb($symb);
3391: if ($type eq 'course') {
3392: $res='course';
3393: } elsif ($type eq 'map') {
3394: $res=&symbread($map);
3395: } else {
3396: $res=$symb;
3397: }
3398: my $firstaccess=&get_first_access($type,$symb);
3399: if (!$firstaccess) {
3400: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3401: }
3402: return 'already_set';
3403: }
3404:
3405: # --------------------------------------------- Set Expire Date for Spreadsheet
3406:
3407: sub expirespread {
3408: my ($uname,$udom,$stype,$usymb)=@_;
3409: my $cid=$env{'request.course.id'};
3410: if ($cid) {
3411: my $now=time;
3412: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3413: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3414: $env{'course.'.$cid.'.num'}.
3415: ':nohist_expirationdates:'.
3416: &escape($key).'='.$now,
3417: $env{'course.'.$cid.'.home'})
3418: }
3419: return 'ok';
3420: }
3421:
3422: # ----------------------------------------------------- Devalidate Spreadsheets
3423:
3424: sub devalidate {
3425: my ($symb,$uname,$udom)=@_;
3426: my $cid=$env{'request.course.id'};
3427: if ($cid) {
3428: # delete the stored spreadsheets for
3429: # - the student level sheet of this user in course's homespace
3430: # - the assessment level sheet for this resource
3431: # for this user in user's homespace
3432: # - current conditional state info
3433: my $key=$uname.':'.$udom.':';
3434: my $status=
3435: &del('nohist_calculatedsheets',
3436: [$key.'studentcalc:'],
3437: $env{'course.'.$cid.'.domain'},
3438: $env{'course.'.$cid.'.num'})
3439: .' '.
3440: &del('nohist_calculatedsheets_'.$cid,
3441: [$key.'assesscalc:'.$symb],$udom,$uname);
3442: unless ($status eq 'ok ok') {
3443: &logthis('Could not devalidate spreadsheet '.
3444: $uname.' at '.$udom.' for '.
3445: $symb.': '.$status);
3446: }
3447: &delenv('user.state.'.$cid);
3448: }
3449: }
3450:
3451: sub get_scalar {
3452: my ($string,$end) = @_;
3453: my $value;
3454: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3455: $value = $1;
3456: } elsif ($$string =~ s/^([^&]*?)&//) {
3457: $value = $1;
3458: }
3459: return &unescape($value);
3460: }
3461:
3462: sub array2str {
3463: my (@array) = @_;
3464: my $result=&arrayref2str(\@array);
3465: $result=~s/^__ARRAY_REF__//;
3466: $result=~s/__END_ARRAY_REF__$//;
3467: return $result;
3468: }
3469:
3470: sub arrayref2str {
3471: my ($arrayref) = @_;
3472: my $result='__ARRAY_REF__';
3473: foreach my $elem (@$arrayref) {
3474: if(ref($elem) eq 'ARRAY') {
3475: $result.=&arrayref2str($elem).'&';
3476: } elsif(ref($elem) eq 'HASH') {
3477: $result.=&hashref2str($elem).'&';
3478: } elsif(ref($elem)) {
3479: #print("Got a ref of ".(ref($elem))." skipping.");
3480: } else {
3481: $result.=&escape($elem).'&';
3482: }
3483: }
3484: $result=~s/\&$//;
3485: $result .= '__END_ARRAY_REF__';
3486: return $result;
3487: }
3488:
3489: sub hash2str {
3490: my (%hash) = @_;
3491: my $result=&hashref2str(\%hash);
3492: $result=~s/^__HASH_REF__//;
3493: $result=~s/__END_HASH_REF__$//;
3494: return $result;
3495: }
3496:
3497: sub hashref2str {
3498: my ($hashref)=@_;
3499: my $result='__HASH_REF__';
3500: foreach my $key (sort(keys(%$hashref))) {
3501: if (ref($key) eq 'ARRAY') {
3502: $result.=&arrayref2str($key).'=';
3503: } elsif (ref($key) eq 'HASH') {
3504: $result.=&hashref2str($key).'=';
3505: } elsif (ref($key)) {
3506: $result.='=';
3507: #print("Got a ref of ".(ref($key))." skipping.");
3508: } else {
3509: if ($key) {$result.=&escape($key).'=';} else { last; }
3510: }
3511:
3512: if(ref($hashref->{$key}) eq 'ARRAY') {
3513: $result.=&arrayref2str($hashref->{$key}).'&';
3514: } elsif(ref($hashref->{$key}) eq 'HASH') {
3515: $result.=&hashref2str($hashref->{$key}).'&';
3516: } elsif(ref($hashref->{$key})) {
3517: $result.='&';
3518: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3519: } else {
3520: $result.=&escape($hashref->{$key}).'&';
3521: }
3522: }
3523: $result=~s/\&$//;
3524: $result .= '__END_HASH_REF__';
3525: return $result;
3526: }
3527:
3528: sub str2hash {
3529: my ($string)=@_;
3530: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3531: return %$hash;
3532: }
3533:
3534: sub str2hashref {
3535: my ($string) = @_;
3536:
3537: my %hash;
3538:
3539: if($string !~ /^__HASH_REF__/) {
3540: if (! ($string eq '' || !defined($string))) {
3541: $hash{'error'}='Not hash reference';
3542: }
3543: return (\%hash, $string);
3544: }
3545:
3546: $string =~ s/^__HASH_REF__//;
3547:
3548: while($string !~ /^__END_HASH_REF__/) {
3549: #key
3550: my $key='';
3551: if($string =~ /^__HASH_REF__/) {
3552: ($key, $string)=&str2hashref($string);
3553: if(defined($key->{'error'})) {
3554: $hash{'error'}='Bad data';
3555: return (\%hash, $string);
3556: }
3557: } elsif($string =~ /^__ARRAY_REF__/) {
3558: ($key, $string)=&str2arrayref($string);
3559: if($key->[0] eq 'Array reference error') {
3560: $hash{'error'}='Bad data';
3561: return (\%hash, $string);
3562: }
3563: } else {
3564: $string =~ s/^(.*?)=//;
3565: $key=&unescape($1);
3566: }
3567: $string =~ s/^=//;
3568:
3569: #value
3570: my $value='';
3571: if($string =~ /^__HASH_REF__/) {
3572: ($value, $string)=&str2hashref($string);
3573: if(defined($value->{'error'})) {
3574: $hash{'error'}='Bad data';
3575: return (\%hash, $string);
3576: }
3577: } elsif($string =~ /^__ARRAY_REF__/) {
3578: ($value, $string)=&str2arrayref($string);
3579: if($value->[0] eq 'Array reference error') {
3580: $hash{'error'}='Bad data';
3581: return (\%hash, $string);
3582: }
3583: } else {
3584: $value=&get_scalar(\$string,'__END_HASH_REF__');
3585: }
3586: $string =~ s/^&//;
3587:
3588: $hash{$key}=$value;
3589: }
3590:
3591: $string =~ s/^__END_HASH_REF__//;
3592:
3593: return (\%hash, $string);
3594: }
3595:
3596: sub str2array {
3597: my ($string)=@_;
3598: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3599: return @$array;
3600: }
3601:
3602: sub str2arrayref {
3603: my ($string) = @_;
3604: my @array;
3605:
3606: if($string !~ /^__ARRAY_REF__/) {
3607: if (! ($string eq '' || !defined($string))) {
3608: $array[0]='Array reference error';
3609: }
3610: return (\@array, $string);
3611: }
3612:
3613: $string =~ s/^__ARRAY_REF__//;
3614:
3615: while($string !~ /^__END_ARRAY_REF__/) {
3616: my $value='';
3617: if($string =~ /^__HASH_REF__/) {
3618: ($value, $string)=&str2hashref($string);
3619: if(defined($value->{'error'})) {
3620: $array[0] ='Array reference error';
3621: return (\@array, $string);
3622: }
3623: } elsif($string =~ /^__ARRAY_REF__/) {
3624: ($value, $string)=&str2arrayref($string);
3625: if($value->[0] eq 'Array reference error') {
3626: $array[0] ='Array reference error';
3627: return (\@array, $string);
3628: }
3629: } else {
3630: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3631: }
3632: $string =~ s/^&//;
3633:
3634: push(@array, $value);
3635: }
3636:
3637: $string =~ s/^__END_ARRAY_REF__//;
3638:
3639: return (\@array, $string);
3640: }
3641:
3642: # -------------------------------------------------------------------Temp Store
3643:
3644: sub tmpreset {
3645: my ($symb,$namespace,$domain,$stuname) = @_;
3646: if (!$symb) {
3647: $symb=&symbread();
3648: if (!$symb) { $symb= $env{'request.url'}; }
3649: }
3650: $symb=escape($symb);
3651:
3652: if (!$namespace) { $namespace=$env{'request.state'}; }
3653: $namespace=~s/\//\_/g;
3654: $namespace=~s/\W//g;
3655:
3656: if (!$domain) { $domain=$env{'user.domain'}; }
3657: if (!$stuname) { $stuname=$env{'user.name'}; }
3658: if ($domain eq 'public' && $stuname eq 'public') {
3659: $stuname=$ENV{'REMOTE_ADDR'};
3660: }
3661: my $path=$perlvar{'lonDaemons'}.'/tmp';
3662: my %hash;
3663: if (tie(%hash,'GDBM_File',
3664: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3665: &GDBM_WRCREAT(),0640)) {
3666: foreach my $key (keys(%hash)) {
3667: if ($key=~ /:$symb/) {
3668: delete($hash{$key});
3669: }
3670: }
3671: }
3672: }
3673:
3674: sub tmpstore {
3675: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3676:
3677: if (!$symb) {
3678: $symb=&symbread();
3679: if (!$symb) { $symb= $env{'request.url'}; }
3680: }
3681: $symb=escape($symb);
3682:
3683: if (!$namespace) {
3684: # I don't think we would ever want to store this for a course.
3685: # it seems this will only be used if we don't have a course.
3686: #$namespace=$env{'request.course.id'};
3687: #if (!$namespace) {
3688: $namespace=$env{'request.state'};
3689: #}
3690: }
3691: $namespace=~s/\//\_/g;
3692: $namespace=~s/\W//g;
3693: if (!$domain) { $domain=$env{'user.domain'}; }
3694: if (!$stuname) { $stuname=$env{'user.name'}; }
3695: if ($domain eq 'public' && $stuname eq 'public') {
3696: $stuname=$ENV{'REMOTE_ADDR'};
3697: }
3698: my $now=time;
3699: my %hash;
3700: my $path=$perlvar{'lonDaemons'}.'/tmp';
3701: if (tie(%hash,'GDBM_File',
3702: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3703: &GDBM_WRCREAT(),0640)) {
3704: $hash{"version:$symb"}++;
3705: my $version=$hash{"version:$symb"};
3706: my $allkeys='';
3707: foreach my $key (keys(%$storehash)) {
3708: $allkeys.=$key.':';
3709: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3710: }
3711: $hash{"$version:$symb:timestamp"}=$now;
3712: $allkeys.='timestamp';
3713: $hash{"$version:keys:$symb"}=$allkeys;
3714: if (untie(%hash)) {
3715: return 'ok';
3716: } else {
3717: return "error:$!";
3718: }
3719: } else {
3720: return "error:$!";
3721: }
3722: }
3723:
3724: # -----------------------------------------------------------------Temp Restore
3725:
3726: sub tmprestore {
3727: my ($symb,$namespace,$domain,$stuname) = @_;
3728:
3729: if (!$symb) {
3730: $symb=&symbread();
3731: if (!$symb) { $symb= $env{'request.url'}; }
3732: }
3733: $symb=escape($symb);
3734:
3735: if (!$namespace) { $namespace=$env{'request.state'}; }
3736:
3737: if (!$domain) { $domain=$env{'user.domain'}; }
3738: if (!$stuname) { $stuname=$env{'user.name'}; }
3739: if ($domain eq 'public' && $stuname eq 'public') {
3740: $stuname=$ENV{'REMOTE_ADDR'};
3741: }
3742: my %returnhash;
3743: $namespace=~s/\//\_/g;
3744: $namespace=~s/\W//g;
3745: my %hash;
3746: my $path=$perlvar{'lonDaemons'}.'/tmp';
3747: if (tie(%hash,'GDBM_File',
3748: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3749: &GDBM_READER(),0640)) {
3750: my $version=$hash{"version:$symb"};
3751: $returnhash{'version'}=$version;
3752: my $scope;
3753: for ($scope=1;$scope<=$version;$scope++) {
3754: my $vkeys=$hash{"$scope:keys:$symb"};
3755: my @keys=split(/:/,$vkeys);
3756: my $key;
3757: $returnhash{"$scope:keys"}=$vkeys;
3758: foreach $key (@keys) {
3759: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3760: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3761: }
3762: }
3763: if (!(untie(%hash))) {
3764: return "error:$!";
3765: }
3766: } else {
3767: return "error:$!";
3768: }
3769: return %returnhash;
3770: }
3771:
3772: # ----------------------------------------------------------------------- Store
3773:
3774: sub store {
3775: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3776: my $home='';
3777:
3778: if ($stuname) { $home=&homeserver($stuname,$domain); }
3779:
3780: $symb=&symbclean($symb);
3781: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3782:
3783: if (!$domain) { $domain=$env{'user.domain'}; }
3784: if (!$stuname) { $stuname=$env{'user.name'}; }
3785:
3786: &devalidate($symb,$stuname,$domain);
3787:
3788: $symb=escape($symb);
3789: if (!$namespace) {
3790: unless ($namespace=$env{'request.course.id'}) {
3791: return '';
3792: }
3793: }
3794: if (!$home) { $home=$env{'user.home'}; }
3795:
3796: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3797: $$storehash{'host'}=$perlvar{'lonHostID'};
3798:
3799: my $namevalue='';
3800: foreach my $key (keys(%$storehash)) {
3801: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3802: }
3803: $namevalue=~s/\&$//;
3804: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3805: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3806: }
3807:
3808: # -------------------------------------------------------------- Critical Store
3809:
3810: sub cstore {
3811: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3812: my $home='';
3813:
3814: if ($stuname) { $home=&homeserver($stuname,$domain); }
3815:
3816: $symb=&symbclean($symb);
3817: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3818:
3819: if (!$domain) { $domain=$env{'user.domain'}; }
3820: if (!$stuname) { $stuname=$env{'user.name'}; }
3821:
3822: &devalidate($symb,$stuname,$domain);
3823:
3824: $symb=escape($symb);
3825: if (!$namespace) {
3826: unless ($namespace=$env{'request.course.id'}) {
3827: return '';
3828: }
3829: }
3830: if (!$home) { $home=$env{'user.home'}; }
3831:
3832: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3833: $$storehash{'host'}=$perlvar{'lonHostID'};
3834:
3835: my $namevalue='';
3836: foreach my $key (keys(%$storehash)) {
3837: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3838: }
3839: $namevalue=~s/\&$//;
3840: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3841: return critical
3842: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3843: }
3844:
3845: # --------------------------------------------------------------------- Restore
3846:
3847: sub restore {
3848: my ($symb,$namespace,$domain,$stuname) = @_;
3849: my $home='';
3850:
3851: if ($stuname) { $home=&homeserver($stuname,$domain); }
3852:
3853: if (!$symb) {
3854: unless ($symb=escape(&symbread())) { return ''; }
3855: } else {
3856: $symb=&escape(&symbclean($symb));
3857: }
3858: if (!$namespace) {
3859: unless ($namespace=$env{'request.course.id'}) {
3860: return '';
3861: }
3862: }
3863: if (!$domain) { $domain=$env{'user.domain'}; }
3864: if (!$stuname) { $stuname=$env{'user.name'}; }
3865: if (!$home) { $home=$env{'user.home'}; }
3866: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3867:
3868: my %returnhash=();
3869: foreach my $line (split(/\&/,$answer)) {
3870: my ($name,$value)=split(/\=/,$line);
3871: $returnhash{&unescape($name)}=&thaw_unescape($value);
3872: }
3873: my $version;
3874: for ($version=1;$version<=$returnhash{'version'};$version++) {
3875: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3876: $returnhash{$item}=$returnhash{$version.':'.$item};
3877: }
3878: }
3879: return %returnhash;
3880: }
3881:
3882: # ---------------------------------------------------------- Course Description
3883:
3884: sub coursedescription {
3885: my ($courseid,$args)=@_;
3886: $courseid=~s/^\///;
3887: $courseid=~s/\_/\//g;
3888: my ($cdomain,$cnum)=split(/\//,$courseid);
3889: my $chome=&homeserver($cnum,$cdomain);
3890: my $normalid=$cdomain.'_'.$cnum;
3891: # need to always cache even if we get errors otherwise we keep
3892: # trying and trying and trying to get the course description.
3893: my %envhash=();
3894: my %returnhash=();
3895:
3896: my $expiretime=600;
3897: if ($env{'request.course.id'} eq $normalid) {
3898: $expiretime=120;
3899: }
3900:
3901: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3902: if (!$args->{'freshen_cache'}
3903: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3904: foreach my $key (keys(%env)) {
3905: next if ($key !~ /^\Q$prefix\E(.*)/);
3906: my ($setting) = $1;
3907: $returnhash{$setting} = $env{$key};
3908: }
3909: return %returnhash;
3910: }
3911:
3912: # get the data agin
3913: if (!$args->{'one_time'}) {
3914: $envhash{'course.'.$normalid.'.last_cache'}=time;
3915: }
3916:
3917: if ($chome ne 'no_host') {
3918: %returnhash=&dump('environment',$cdomain,$cnum);
3919: if (!exists($returnhash{'con_lost'})) {
3920: $returnhash{'home'}= $chome;
3921: $returnhash{'domain'} = $cdomain;
3922: $returnhash{'num'} = $cnum;
3923: if (!defined($returnhash{'type'})) {
3924: $returnhash{'type'} = 'Course';
3925: }
3926: while (my ($name,$value) = each %returnhash) {
3927: $envhash{'course.'.$normalid.'.'.$name}=$value;
3928: }
3929: $returnhash{'url'}=&clutter($returnhash{'url'});
3930: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3931: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3932: $envhash{'course.'.$normalid.'.home'}=$chome;
3933: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3934: $envhash{'course.'.$normalid.'.num'}=$cnum;
3935: }
3936: }
3937: if (!$args->{'one_time'}) {
3938: &appenv(\%envhash);
3939: }
3940: return %returnhash;
3941: }
3942:
3943: sub update_released_required {
3944: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
3945: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
3946: $cid = $env{'request.course.id'};
3947: $cdom = $env{'course.'.$cid.'.domain'};
3948: $cnum = $env{'course.'.$cid.'.num'};
3949: $chome = $env{'course.'.$cid.'.home'};
3950: }
3951: if ($needsrelease) {
3952: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
3953: my $needsupdate;
3954: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
3955: $needsupdate = 1;
3956: } else {
3957: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
3958: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
3959: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
3960: $needsupdate = 1;
3961: }
3962: }
3963: if ($needsupdate) {
3964: my %needshash = (
3965: 'internal.releaserequired' => $needsrelease,
3966: );
3967: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
3968: if ($putresult eq 'ok') {
3969: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
3970: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
3971: if (ref($crsinfo{$cid}) eq 'HASH') {
3972: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
3973: &courseidput($cdom,\%crsinfo,$chome,'notime');
3974: }
3975: }
3976: }
3977: }
3978: return;
3979: }
3980:
3981: # -------------------------------------------------See if a user is privileged
3982:
3983: sub privileged {
3984: my ($username,$domain)=@_;
3985: my $rolesdump=&reply("dump:$domain:$username:roles",
3986: &homeserver($username,$domain));
3987: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
3988: ($rolesdump =~ /^error:/)) {
3989: return 0;
3990: }
3991: my $now=time;
3992: if ($rolesdump ne '') {
3993: foreach my $entry (split(/&/,$rolesdump)) {
3994: if ($entry!~/^rolesdef_/) {
3995: my ($area,$role)=split(/=/,$entry);
3996: $area=~s/\_\w\w$//;
3997: my ($trole,$tend,$tstart)=split(/_/,$role);
3998: if (($trole eq 'dc') || ($trole eq 'su')) {
3999: my $active=1;
4000: if ($tend) {
4001: if ($tend<$now) { $active=0; }
4002: }
4003: if ($tstart) {
4004: if ($tstart>$now) { $active=0; }
4005: }
4006: if ($active) { return 1; }
4007: }
4008: }
4009: }
4010: }
4011: return 0;
4012: }
4013:
4014: # -------------------------------------------------------- Get user privileges
4015:
4016: sub rolesinit {
4017: my ($domain,$username,$authhost)=@_;
4018: my $now=time;
4019: my %userroles = ('user.login.time' => $now);
4020: my $extra = &freeze_escape({'skipcheck' => 1});
4021: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4022: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4023: ($rolesdump =~ /^error:/)) {
4024: return \%userroles;
4025: }
4026: my %allroles=();
4027: my %allgroups=();
4028: my $group_privs;
4029:
4030: if ($rolesdump ne '') {
4031: foreach my $entry (split(/&/,$rolesdump)) {
4032: if ($entry!~/^rolesdef_/) {
4033: my ($area,$role)=split(/=/,$entry);
4034: $area=~s/\_\w\w$//;
4035: my ($trole,$tend,$tstart,$group_privs);
4036: if ($role=~/^cr/) {
4037: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4038: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4039: ($tend,$tstart)=split('_',$trest);
4040: } else {
4041: $trole=$role;
4042: }
4043: } elsif ($role =~ m|^gr/|) {
4044: ($trole,$tend,$tstart) = split(/_/,$role);
4045: ($trole,$group_privs) = split(/\//,$trole);
4046: $group_privs = &unescape($group_privs);
4047: } else {
4048: ($trole,$tend,$tstart)=split(/_/,$role);
4049: }
4050: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4051: $username);
4052: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4053: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4054: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4055: if (($area ne '') && ($trole ne '')) {
4056: my $spec=$trole.'.'.$area;
4057: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4058: if ($trole =~ /^cr\//) {
4059: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4060: } elsif ($trole eq 'gr') {
4061: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4062: } else {
4063: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4064: }
4065: }
4066: }
4067: }
4068: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4069: $userroles{'user.adv'} = $adv;
4070: $userroles{'user.author'} = $author;
4071: $env{'user.adv'}=$adv;
4072: }
4073: return \%userroles;
4074: }
4075:
4076: sub set_arearole {
4077: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4078: # log the associated role with the area
4079: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4080: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4081: }
4082:
4083: sub custom_roleprivs {
4084: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4085: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4086: my $homsvr=homeserver($rauthor,$rdomain);
4087: if (&hostname($homsvr) ne '') {
4088: my ($rdummy,$roledef)=
4089: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4090: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4091: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4092: if (defined($syspriv)) {
4093: if ($trest =~ /^$match_community$/) {
4094: $syspriv =~ s/bre\&S//;
4095: }
4096: $$allroles{'cm./'}.=':'.$syspriv;
4097: $$allroles{$spec.'./'}.=':'.$syspriv;
4098: }
4099: if ($tdomain ne '') {
4100: if (defined($dompriv)) {
4101: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4102: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4103: }
4104: if (($trest ne '') && (defined($coursepriv))) {
4105: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4106: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4107: }
4108: }
4109: }
4110: }
4111: }
4112:
4113: sub group_roleprivs {
4114: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4115: my $access = 1;
4116: my $now = time;
4117: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4118: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4119: if ($access) {
4120: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4121: $$allgroups{$course}{$group} .=':'.$group_privs;
4122: }
4123: }
4124:
4125: sub standard_roleprivs {
4126: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4127: if (defined($pr{$trole.':s'})) {
4128: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4129: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4130: }
4131: if ($tdomain ne '') {
4132: if (defined($pr{$trole.':d'})) {
4133: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4134: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4135: }
4136: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4137: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4138: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4139: }
4140: }
4141: }
4142:
4143: sub set_userprivs {
4144: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4145: my $author=0;
4146: my $adv=0;
4147: my %grouproles = ();
4148: if (keys(%{$allgroups}) > 0) {
4149: my @groupkeys;
4150: foreach my $role (keys(%{$allroles})) {
4151: push(@groupkeys,$role);
4152: }
4153: if (ref($groups_roles) eq 'HASH') {
4154: foreach my $key (keys(%{$groups_roles})) {
4155: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4156: push(@groupkeys,$key);
4157: }
4158: }
4159: }
4160: if (@groupkeys > 0) {
4161: foreach my $role (@groupkeys) {
4162: my ($trole,$area,$sec,$extendedarea);
4163: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4164: $trole = $1;
4165: $area = $2;
4166: $sec = $3;
4167: $extendedarea = $area.$sec;
4168: if (exists($$allgroups{$area})) {
4169: foreach my $group (keys(%{$$allgroups{$area}})) {
4170: my $spec = $trole.'.'.$extendedarea;
4171: $grouproles{$spec.'.'.$area.'/'.$group} =
4172: $$allgroups{$area}{$group};
4173: }
4174: }
4175: }
4176: }
4177: }
4178: }
4179: foreach my $group (keys(%grouproles)) {
4180: $$allroles{$group} = $grouproles{$group};
4181: }
4182: foreach my $role (keys(%{$allroles})) {
4183: my %thesepriv;
4184: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4185: foreach my $item (split(/:/,$$allroles{$role})) {
4186: if ($item ne '') {
4187: my ($privilege,$restrictions)=split(/&/,$item);
4188: if ($restrictions eq '') {
4189: $thesepriv{$privilege}='F';
4190: } elsif ($thesepriv{$privilege} ne 'F') {
4191: $thesepriv{$privilege}.=$restrictions;
4192: }
4193: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4194: }
4195: }
4196: my $thesestr='';
4197: foreach my $priv (keys(%thesepriv)) {
4198: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4199: }
4200: $userroles->{'user.priv.'.$role} = $thesestr;
4201: }
4202: return ($author,$adv);
4203: }
4204:
4205: sub role_status {
4206: my ($rolekey,$then,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4207: my @pwhere = ();
4208: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4209: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4210: unless (!defined($$role) || $$role eq '') {
4211: $$where=join('.',@pwhere);
4212: $$trolecode=$$role.'.'.$$where;
4213: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4214: $$tstatus='is';
4215: if ($$tstart && $$tstart>$then) {
4216: $$tstatus='future';
4217: if ($$tstart<$now) {
4218: if ($$tstart && $$tstart>$refresh) {
4219: if (($$where ne '') && ($$role ne '')) {
4220: my (%allroles,%allgroups,$group_privs,
4221: %groups_roles,@rolecodes);
4222: my %userroles = (
4223: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4224: );
4225: @rolecodes = ('cm');
4226: my $spec=$$role.'.'.$$where;
4227: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4228: if ($$role =~ /^cr\//) {
4229: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4230: push(@rolecodes,'cr');
4231: } elsif ($$role eq 'gr') {
4232: push(@rolecodes,$$role);
4233: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4234: $env{'user.name'});
4235: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4236: (undef,my $group_privs) = split(/\//,$trole);
4237: $group_privs = &unescape($group_privs);
4238: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4239: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4240: if (keys(%course_roles) > 0) {
4241: my ($tnum) = ($trest =~ /^($match_courseid)/);
4242: if ($tdomain ne '' && $tnum ne '') {
4243: foreach my $key (keys(%course_roles)) {
4244: if ($key =~ /^\Q$tnum\E:\Q$tdomain\E:([^:]+):?([^:]*)/) {
4245: my $crsrole = $1;
4246: my $crssec = $2;
4247: if ($crsrole =~ /^cr/) {
4248: unless (grep(/^cr$/,@rolecodes)) {
4249: push(@rolecodes,'cr');
4250: }
4251: } else {
4252: unless(grep(/^\Q$crsrole\E$/,@rolecodes)) {
4253: push(@rolecodes,$crsrole);
4254: }
4255: }
4256: my $rolekey = $crsrole.'./'.$tdomain.'/'.$tnum;
4257: if ($crssec ne '') {
4258: $rolekey .= '/'.$crssec;
4259: }
4260: $rolekey .= './';
4261: $groups_roles{$rolekey} = \@rolecodes;
4262: }
4263: }
4264: }
4265: }
4266: } else {
4267: push(@rolecodes,$$role);
4268: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4269: }
4270: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4271: &appenv(\%userroles,\@rolecodes);
4272: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4273: }
4274: }
4275: $$tstatus = 'is';
4276: }
4277: }
4278: if ($$tend) {
4279: if ($$tend<$then) {
4280: $$tstatus='expired';
4281: } elsif ($$tend<$now) {
4282: $$tstatus='will_not';
4283: }
4284: }
4285: }
4286: }
4287: }
4288:
4289: sub check_adhoc_privs {
4290: my ($cdom,$cnum,$then,$refresh,$now,$checkrole,$caller) = @_;
4291: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4292: if ($env{$cckey}) {
4293: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4294: &role_status($cckey,$then,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4295: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4296: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4297: }
4298: } else {
4299: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4300: }
4301: }
4302:
4303: sub set_adhoc_privileges {
4304: # role can be cc or ca
4305: my ($dcdom,$pickedcourse,$role,$caller) = @_;
4306: my $area = '/'.$dcdom.'/'.$pickedcourse;
4307: my $spec = $role.'.'.$area;
4308: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4309: $env{'user.name'});
4310: my %ccrole = ();
4311: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4312: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4313: &appenv(\%userroles,[$role,'cm']);
4314: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4315: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
4316: &appenv( {'request.role' => $spec,
4317: 'request.role.domain' => $dcdom,
4318: 'request.course.sec' => ''
4319: }
4320: );
4321: my $tadv=0;
4322: if (&allowed('adv') eq 'F') { $tadv=1; }
4323: &appenv({'request.role.adv' => $tadv});
4324: }
4325: }
4326:
4327: # --------------------------------------------------------------- get interface
4328:
4329: sub get {
4330: my ($namespace,$storearr,$udomain,$uname)=@_;
4331: my $items='';
4332: foreach my $item (@$storearr) {
4333: $items.=&escape($item).'&';
4334: }
4335: $items=~s/\&$//;
4336: if (!$udomain) { $udomain=$env{'user.domain'}; }
4337: if (!$uname) { $uname=$env{'user.name'}; }
4338: my $uhome=&homeserver($uname,$udomain);
4339:
4340: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4341: my @pairs=split(/\&/,$rep);
4342: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4343: return @pairs;
4344: }
4345: my %returnhash=();
4346: my $i=0;
4347: foreach my $item (@$storearr) {
4348: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4349: $i++;
4350: }
4351: return %returnhash;
4352: }
4353:
4354: # --------------------------------------------------------------- del interface
4355:
4356: sub del {
4357: my ($namespace,$storearr,$udomain,$uname)=@_;
4358: my $items='';
4359: foreach my $item (@$storearr) {
4360: $items.=&escape($item).'&';
4361: }
4362:
4363: $items=~s/\&$//;
4364: if (!$udomain) { $udomain=$env{'user.domain'}; }
4365: if (!$uname) { $uname=$env{'user.name'}; }
4366: my $uhome=&homeserver($uname,$udomain);
4367: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4368: }
4369:
4370: # -------------------------------------------------------------- dump interface
4371:
4372: sub dump {
4373: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
4374: if (!$udomain) { $udomain=$env{'user.domain'}; }
4375: if (!$uname) { $uname=$env{'user.name'}; }
4376: my $uhome=&homeserver($uname,$udomain);
4377: if ($regexp) {
4378: $regexp=&escape($regexp);
4379: } else {
4380: $regexp='.';
4381: }
4382: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
4383: my @pairs=split(/\&/,$rep);
4384: my %returnhash=();
4385: foreach my $item (@pairs) {
4386: my ($key,$value)=split(/=/,$item,2);
4387: $key = &unescape($key);
4388: next if ($key =~ /^error: 2 /);
4389: $returnhash{$key}=&thaw_unescape($value);
4390: }
4391: return %returnhash;
4392: }
4393:
4394: # --------------------------------------------------------- dumpstore interface
4395:
4396: sub dumpstore {
4397: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4398: if (!$udomain) { $udomain=$env{'user.domain'}; }
4399: if (!$uname) { $uname=$env{'user.name'}; }
4400: my $uhome=&homeserver($uname,$udomain);
4401: if ($regexp) {
4402: $regexp=&escape($regexp);
4403: } else {
4404: $regexp='.';
4405: }
4406: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4407: my @pairs=split(/\&/,$rep);
4408: my %returnhash=();
4409: foreach my $item (@pairs) {
4410: my ($key,$value)=split(/=/,$item,2);
4411: next if ($key =~ /^error: 2 /);
4412: $returnhash{$key}=&thaw_unescape($value);
4413: }
4414: return %returnhash;
4415: }
4416:
4417: # -------------------------------------------------------------- keys interface
4418:
4419: sub getkeys {
4420: my ($namespace,$udomain,$uname)=@_;
4421: if (!$udomain) { $udomain=$env{'user.domain'}; }
4422: if (!$uname) { $uname=$env{'user.name'}; }
4423: my $uhome=&homeserver($uname,$udomain);
4424: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4425: my @keyarray=();
4426: foreach my $key (split(/\&/,$rep)) {
4427: next if ($key =~ /^error: 2 /);
4428: push(@keyarray,&unescape($key));
4429: }
4430: return @keyarray;
4431: }
4432:
4433: # --------------------------------------------------------------- currentdump
4434: sub currentdump {
4435: my ($courseid,$sdom,$sname)=@_;
4436: $courseid = $env{'request.course.id'} if (! defined($courseid));
4437: $sdom = $env{'user.domain'} if (! defined($sdom));
4438: $sname = $env{'user.name'} if (! defined($sname));
4439: my $uhome = &homeserver($sname,$sdom);
4440: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4441: return if ($rep =~ /^(error:|no_such_host)/);
4442: #
4443: my %returnhash=();
4444: #
4445: if ($rep eq "unknown_cmd") {
4446: # an old lond will not know currentdump
4447: # Do a dump and make it look like a currentdump
4448: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4449: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4450: my %hash = @tmp;
4451: @tmp=();
4452: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4453: } else {
4454: my @pairs=split(/\&/,$rep);
4455: foreach my $pair (@pairs) {
4456: my ($key,$value)=split(/=/,$pair,2);
4457: my ($symb,$param) = split(/:/,$key);
4458: $returnhash{&unescape($symb)}->{&unescape($param)} =
4459: &thaw_unescape($value);
4460: }
4461: }
4462: return %returnhash;
4463: }
4464:
4465: sub convert_dump_to_currentdump{
4466: my %hash = %{shift()};
4467: my %returnhash;
4468: # Code ripped from lond, essentially. The only difference
4469: # here is the unescaping done by lonnet::dump(). Conceivably
4470: # we might run in to problems with parameter names =~ /^v\./
4471: while (my ($key,$value) = each(%hash)) {
4472: my ($v,$symb,$param) = split(/:/,$key);
4473: $symb = &unescape($symb);
4474: $param = &unescape($param);
4475: next if ($v eq 'version' || $symb eq 'keys');
4476: next if (exists($returnhash{$symb}) &&
4477: exists($returnhash{$symb}->{$param}) &&
4478: $returnhash{$symb}->{'v.'.$param} > $v);
4479: $returnhash{$symb}->{$param}=$value;
4480: $returnhash{$symb}->{'v.'.$param}=$v;
4481: }
4482: #
4483: # Remove all of the keys in the hashes which keep track of
4484: # the version of the parameter.
4485: while (my ($symb,$param_hash) = each(%returnhash)) {
4486: # use a foreach because we are going to delete from the hash.
4487: foreach my $key (keys(%$param_hash)) {
4488: delete($param_hash->{$key}) if ($key =~ /^v\./);
4489: }
4490: }
4491: return \%returnhash;
4492: }
4493:
4494: # ------------------------------------------------------ critical inc interface
4495:
4496: sub cinc {
4497: return &inc(@_,'critical');
4498: }
4499:
4500: # --------------------------------------------------------------- inc interface
4501:
4502: sub inc {
4503: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4504: if (!$udomain) { $udomain=$env{'user.domain'}; }
4505: if (!$uname) { $uname=$env{'user.name'}; }
4506: my $uhome=&homeserver($uname,$udomain);
4507: my $items='';
4508: if (! ref($store)) {
4509: # got a single value, so use that instead
4510: $items = &escape($store).'=&';
4511: } elsif (ref($store) eq 'SCALAR') {
4512: $items = &escape($$store).'=&';
4513: } elsif (ref($store) eq 'ARRAY') {
4514: $items = join('=&',map {&escape($_);} @{$store});
4515: } elsif (ref($store) eq 'HASH') {
4516: while (my($key,$value) = each(%{$store})) {
4517: $items.= &escape($key).'='.&escape($value).'&';
4518: }
4519: }
4520: $items=~s/\&$//;
4521: if ($critical) {
4522: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4523: } else {
4524: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4525: }
4526: }
4527:
4528: # --------------------------------------------------------------- put interface
4529:
4530: sub put {
4531: my ($namespace,$storehash,$udomain,$uname)=@_;
4532: if (!$udomain) { $udomain=$env{'user.domain'}; }
4533: if (!$uname) { $uname=$env{'user.name'}; }
4534: my $uhome=&homeserver($uname,$udomain);
4535: my $items='';
4536: foreach my $item (keys(%$storehash)) {
4537: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4538: }
4539: $items=~s/\&$//;
4540: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4541: }
4542:
4543: # ------------------------------------------------------------ newput interface
4544:
4545: sub newput {
4546: my ($namespace,$storehash,$udomain,$uname)=@_;
4547: if (!$udomain) { $udomain=$env{'user.domain'}; }
4548: if (!$uname) { $uname=$env{'user.name'}; }
4549: my $uhome=&homeserver($uname,$udomain);
4550: my $items='';
4551: foreach my $key (keys(%$storehash)) {
4552: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4553: }
4554: $items=~s/\&$//;
4555: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4556: }
4557:
4558: # --------------------------------------------------------- putstore interface
4559:
4560: sub putstore {
4561: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4562: if (!$udomain) { $udomain=$env{'user.domain'}; }
4563: if (!$uname) { $uname=$env{'user.name'}; }
4564: my $uhome=&homeserver($uname,$udomain);
4565: my $items='';
4566: foreach my $key (keys(%$storehash)) {
4567: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4568: }
4569: $items=~s/\&$//;
4570: my $esc_symb=&escape($symb);
4571: my $esc_v=&escape($version);
4572: my $reply =
4573: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4574: $uhome);
4575: if ($reply eq 'unknown_cmd') {
4576: # gfall back to way things use to be done
4577: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4578: $uname);
4579: }
4580: return $reply;
4581: }
4582:
4583: sub old_putstore {
4584: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4585: if (!$udomain) { $udomain=$env{'user.domain'}; }
4586: if (!$uname) { $uname=$env{'user.name'}; }
4587: my $uhome=&homeserver($uname,$udomain);
4588: my %newstorehash;
4589: foreach my $item (keys(%$storehash)) {
4590: my $key = $version.':'.&escape($symb).':'.$item;
4591: $newstorehash{$key} = $storehash->{$item};
4592: }
4593: my $items='';
4594: my %allitems = ();
4595: foreach my $item (keys(%newstorehash)) {
4596: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4597: my $key = $1.':keys:'.$2;
4598: $allitems{$key} .= $3.':';
4599: }
4600: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4601: }
4602: foreach my $item (keys(%allitems)) {
4603: $allitems{$item} =~ s/\:$//;
4604: $items.= $item.'='.$allitems{$item}.'&';
4605: }
4606: $items=~s/\&$//;
4607: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4608: }
4609:
4610: # ------------------------------------------------------ critical put interface
4611:
4612: sub cput {
4613: my ($namespace,$storehash,$udomain,$uname)=@_;
4614: if (!$udomain) { $udomain=$env{'user.domain'}; }
4615: if (!$uname) { $uname=$env{'user.name'}; }
4616: my $uhome=&homeserver($uname,$udomain);
4617: my $items='';
4618: foreach my $item (keys(%$storehash)) {
4619: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4620: }
4621: $items=~s/\&$//;
4622: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4623: }
4624:
4625: # -------------------------------------------------------------- eget interface
4626:
4627: sub eget {
4628: my ($namespace,$storearr,$udomain,$uname)=@_;
4629: my $items='';
4630: foreach my $item (@$storearr) {
4631: $items.=&escape($item).'&';
4632: }
4633: $items=~s/\&$//;
4634: if (!$udomain) { $udomain=$env{'user.domain'}; }
4635: if (!$uname) { $uname=$env{'user.name'}; }
4636: my $uhome=&homeserver($uname,$udomain);
4637: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4638: my @pairs=split(/\&/,$rep);
4639: my %returnhash=();
4640: my $i=0;
4641: foreach my $item (@$storearr) {
4642: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4643: $i++;
4644: }
4645: return %returnhash;
4646: }
4647:
4648: # ------------------------------------------------------------ tmpput interface
4649: sub tmpput {
4650: my ($storehash,$server,$context)=@_;
4651: my $items='';
4652: foreach my $item (keys(%$storehash)) {
4653: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4654: }
4655: $items=~s/\&$//;
4656: if (defined($context)) {
4657: $items .= ':'.&escape($context);
4658: }
4659: return &reply("tmpput:$items",$server);
4660: }
4661:
4662: # ------------------------------------------------------------ tmpget interface
4663: sub tmpget {
4664: my ($token,$server)=@_;
4665: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4666: my $rep=&reply("tmpget:$token",$server);
4667: my %returnhash;
4668: foreach my $item (split(/\&/,$rep)) {
4669: my ($key,$value)=split(/=/,$item);
4670: next if ($key =~ /^error: 2 /);
4671: $returnhash{&unescape($key)}=&thaw_unescape($value);
4672: }
4673: return %returnhash;
4674: }
4675:
4676: # ------------------------------------------------------------ tmpget interface
4677: sub tmpdel {
4678: my ($token,$server)=@_;
4679: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4680: return &reply("tmpdel:$token",$server);
4681: }
4682:
4683: # -------------------------------------------------- portfolio access checking
4684:
4685: sub portfolio_access {
4686: my ($requrl) = @_;
4687: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4688: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4689: if ($result) {
4690: my %setters;
4691: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4692: my ($startblock,$endblock) =
4693: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4694: if ($startblock && $endblock) {
4695: return 'B';
4696: }
4697: } else {
4698: my ($startblock,$endblock) =
4699: &Apache::loncommon::blockcheck(\%setters,'port');
4700: if ($startblock && $endblock) {
4701: return 'B';
4702: }
4703: }
4704: }
4705: if ($result eq 'ok') {
4706: return 'F';
4707: } elsif ($result =~ /^[^:]+:guest_/) {
4708: return 'A';
4709: }
4710: return '';
4711: }
4712:
4713: sub get_portfolio_access {
4714: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4715:
4716: if (!ref($access_hash)) {
4717: my $current_perms = &get_portfile_permissions($udom,$unum);
4718: my %access_controls = &get_access_controls($current_perms,$group,
4719: $file_name);
4720: $access_hash = $access_controls{$file_name};
4721: }
4722:
4723: my ($public,$guest,@domains,@users,@courses,@groups);
4724: my $now = time;
4725: if (ref($access_hash) eq 'HASH') {
4726: foreach my $key (keys(%{$access_hash})) {
4727: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4728: if ($start > $now) {
4729: next;
4730: }
4731: if ($end && $end<$now) {
4732: next;
4733: }
4734: if ($scope eq 'public') {
4735: $public = $key;
4736: last;
4737: } elsif ($scope eq 'guest') {
4738: $guest = $key;
4739: } elsif ($scope eq 'domains') {
4740: push(@domains,$key);
4741: } elsif ($scope eq 'users') {
4742: push(@users,$key);
4743: } elsif ($scope eq 'course') {
4744: push(@courses,$key);
4745: } elsif ($scope eq 'group') {
4746: push(@groups,$key);
4747: }
4748: }
4749: if ($public) {
4750: return 'ok';
4751: }
4752: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4753: if ($guest) {
4754: return $guest;
4755: }
4756: } else {
4757: if (@domains > 0) {
4758: foreach my $domkey (@domains) {
4759: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4760: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4761: return 'ok';
4762: }
4763: }
4764: }
4765: }
4766: if (@users > 0) {
4767: foreach my $userkey (@users) {
4768: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4769: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4770: if (ref($item) eq 'HASH') {
4771: if (($item->{'uname'} eq $env{'user.name'}) &&
4772: ($item->{'udom'} eq $env{'user.domain'})) {
4773: return 'ok';
4774: }
4775: }
4776: }
4777: }
4778: }
4779: }
4780: my %roleshash;
4781: my @courses_and_groups = @courses;
4782: push(@courses_and_groups,@groups);
4783: if (@courses_and_groups > 0) {
4784: my (%allgroups,%allroles);
4785: my ($start,$end,$role,$sec,$group);
4786: foreach my $envkey (%env) {
4787: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4788: my $cid = $2.'_'.$3;
4789: if ($1 eq 'gr') {
4790: $group = $4;
4791: $allgroups{$cid}{$group} = $env{$envkey};
4792: } else {
4793: if ($4 eq '') {
4794: $sec = 'none';
4795: } else {
4796: $sec = $4;
4797: }
4798: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4799: }
4800: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4801: my $cid = $2.'_'.$3;
4802: if ($4 eq '') {
4803: $sec = 'none';
4804: } else {
4805: $sec = $4;
4806: }
4807: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4808: }
4809: }
4810: if (keys(%allroles) == 0) {
4811: return;
4812: }
4813: foreach my $key (@courses_and_groups) {
4814: my %content = %{$$access_hash{$key}};
4815: my $cnum = $content{'number'};
4816: my $cdom = $content{'domain'};
4817: my $cid = $cdom.'_'.$cnum;
4818: if (!exists($allroles{$cid})) {
4819: next;
4820: }
4821: foreach my $role_id (keys(%{$content{'roles'}})) {
4822: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4823: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4824: my @status = @{$content{'roles'}{$role_id}{'access'}};
4825: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4826: foreach my $role (keys(%{$allroles{$cid}})) {
4827: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4828: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4829: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4830: if (grep/^all$/,@sections) {
4831: return 'ok';
4832: } else {
4833: if (grep/^$sec$/,@sections) {
4834: return 'ok';
4835: }
4836: }
4837: }
4838: }
4839: if (keys(%{$allgroups{$cid}}) == 0) {
4840: if (grep/^none$/,@groups) {
4841: return 'ok';
4842: }
4843: } else {
4844: if (grep/^all$/,@groups) {
4845: return 'ok';
4846: }
4847: foreach my $group (keys(%{$allgroups{$cid}})) {
4848: if (grep/^$group$/,@groups) {
4849: return 'ok';
4850: }
4851: }
4852: }
4853: }
4854: }
4855: }
4856: }
4857: }
4858: if ($guest) {
4859: return $guest;
4860: }
4861: }
4862: }
4863: return;
4864: }
4865:
4866: sub course_group_datechecker {
4867: my ($dates,$now,$status) = @_;
4868: my ($start,$end) = split(/\./,$dates);
4869: if (!$start && !$end) {
4870: return 'ok';
4871: }
4872: if (grep/^active$/,@{$status}) {
4873: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4874: return 'ok';
4875: }
4876: }
4877: if (grep/^previous$/,@{$status}) {
4878: if ($end > $now ) {
4879: return 'ok';
4880: }
4881: }
4882: if (grep/^future$/,@{$status}) {
4883: if ($start > $now) {
4884: return 'ok';
4885: }
4886: }
4887: return;
4888: }
4889:
4890: sub parse_portfolio_url {
4891: my ($url) = @_;
4892:
4893: my ($type,$udom,$unum,$group,$file_name);
4894:
4895: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4896: $type = 1;
4897: $udom = $1;
4898: $unum = $2;
4899: $file_name = $3;
4900: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4901: $type = 2;
4902: $udom = $1;
4903: $unum = $2;
4904: $group = $3;
4905: $file_name = $3.'/'.$4;
4906: }
4907: if (wantarray) {
4908: return ($type,$udom,$unum,$file_name,$group);
4909: }
4910: return $type;
4911: }
4912:
4913: sub is_portfolio_url {
4914: my ($url) = @_;
4915: return scalar(&parse_portfolio_url($url));
4916: }
4917:
4918: sub is_portfolio_file {
4919: my ($file) = @_;
4920: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4921: return 1;
4922: }
4923: return;
4924: }
4925:
4926: sub usertools_access {
4927: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
4928: my ($access,%tools);
4929: if ($context eq '') {
4930: $context = 'tools';
4931: }
4932: if ($context eq 'requestcourses') {
4933: %tools = (
4934: official => 1,
4935: unofficial => 1,
4936: community => 1,
4937: );
4938: } else {
4939: %tools = (
4940: aboutme => 1,
4941: blog => 1,
4942: portfolio => 1,
4943: );
4944: }
4945: return if (!defined($tools{$tool}));
4946:
4947: if ((!defined($udom)) || (!defined($uname))) {
4948: $udom = $env{'user.domain'};
4949: $uname = $env{'user.name'};
4950: }
4951:
4952: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
4953: if ($action ne 'reload') {
4954: if ($context eq 'requestcourses') {
4955: return $env{'environment.canrequest.'.$tool};
4956: } else {
4957: return $env{'environment.availabletools.'.$tool};
4958: }
4959: }
4960: }
4961:
4962: my ($toolstatus,$inststatus);
4963:
4964: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
4965: ($action ne 'reload')) {
4966: $toolstatus = $env{'environment.'.$context.'.'.$tool};
4967: $inststatus = $env{'environment.inststatus'};
4968: } else {
4969: if (ref($userenvref) eq 'HASH') {
4970: $toolstatus = $userenvref->{$context.'.'.$tool};
4971: $inststatus = $userenvref->{'inststatus'};
4972: } else {
4973: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
4974: $toolstatus = $userenv{$context.'.'.$tool};
4975: $inststatus = $userenv{'inststatus'};
4976: }
4977: }
4978:
4979: if ($toolstatus ne '') {
4980: if ($toolstatus) {
4981: $access = 1;
4982: } else {
4983: $access = 0;
4984: }
4985: return $access;
4986: }
4987:
4988: my ($is_adv,%domdef);
4989: if (ref($is_advref) eq 'HASH') {
4990: $is_adv = $is_advref->{'is_adv'};
4991: } else {
4992: $is_adv = &is_advanced_user($udom,$uname);
4993: }
4994: if (ref($domdefref) eq 'HASH') {
4995: %domdef = %{$domdefref};
4996: } else {
4997: %domdef = &get_domain_defaults($udom);
4998: }
4999: if (ref($domdef{$tool}) eq 'HASH') {
5000: if ($is_adv) {
5001: if ($domdef{$tool}{'_LC_adv'} ne '') {
5002: if ($domdef{$tool}{'_LC_adv'}) {
5003: $access = 1;
5004: } else {
5005: $access = 0;
5006: }
5007: return $access;
5008: }
5009: }
5010: if ($inststatus ne '') {
5011: my ($hasaccess,$hasnoaccess);
5012: foreach my $affiliation (split(/:/,$inststatus)) {
5013: if ($domdef{$tool}{$affiliation} ne '') {
5014: if ($domdef{$tool}{$affiliation}) {
5015: $hasaccess = 1;
5016: } else {
5017: $hasnoaccess = 1;
5018: }
5019: }
5020: }
5021: if ($hasaccess || $hasnoaccess) {
5022: if ($hasaccess) {
5023: $access = 1;
5024: } elsif ($hasnoaccess) {
5025: $access = 0;
5026: }
5027: return $access;
5028: }
5029: } else {
5030: if ($domdef{$tool}{'default'} ne '') {
5031: if ($domdef{$tool}{'default'}) {
5032: $access = 1;
5033: } elsif ($domdef{$tool}{'default'} == 0) {
5034: $access = 0;
5035: }
5036: return $access;
5037: }
5038: }
5039: } else {
5040: if ($context eq 'tools') {
5041: $access = 1;
5042: } else {
5043: $access = 0;
5044: }
5045: return $access;
5046: }
5047: }
5048:
5049: sub is_course_owner {
5050: my ($cdom,$cnum,$udom,$uname) = @_;
5051: if (($udom eq '') || ($uname eq '')) {
5052: $udom = $env{'user.domain'};
5053: $uname = $env{'user.name'};
5054: }
5055: unless (($udom eq '') || ($uname eq '')) {
5056: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5057: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5058: return 1;
5059: } else {
5060: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5061: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5062: return 1;
5063: }
5064: }
5065: }
5066: }
5067: return;
5068: }
5069:
5070: sub is_advanced_user {
5071: my ($udom,$uname) = @_;
5072: if ($udom ne '' && $uname ne '') {
5073: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5074: return $env{'user.adv'};
5075: }
5076: }
5077: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5078: my %allroles;
5079: my $is_adv;
5080: foreach my $role (keys(%roleshash)) {
5081: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5082: my $area = '/'.$tdomain.'/'.$trest;
5083: if ($sec ne '') {
5084: $area .= '/'.$sec;
5085: }
5086: if (($area ne '') && ($trole ne '')) {
5087: my $spec=$trole.'.'.$area;
5088: if ($trole =~ /^cr\//) {
5089: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5090: } elsif ($trole ne 'gr') {
5091: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5092: }
5093: }
5094: }
5095: foreach my $role (keys(%allroles)) {
5096: last if ($is_adv);
5097: foreach my $item (split(/:/,$allroles{$role})) {
5098: if ($item ne '') {
5099: my ($privilege,$restrictions)=split(/&/,$item);
5100: if ($privilege eq 'adv') {
5101: $is_adv = 1;
5102: last;
5103: }
5104: }
5105: }
5106: }
5107: return $is_adv;
5108: }
5109:
5110: sub check_can_request {
5111: my ($dom,$can_request,$request_domains) = @_;
5112: my $canreq = 0;
5113: my ($types,$typename) = &Apache::loncommon::course_types();
5114: my @options = ('approval','validate','autolimit');
5115: my $optregex = join('|',@options);
5116: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5117: foreach my $type (@{$types}) {
5118: if (&usertools_access($env{'user.name'},
5119: $env{'user.domain'},
5120: $type,undef,'requestcourses')) {
5121: $canreq ++;
5122: if (ref($request_domains) eq 'HASH') {
5123: push(@{$request_domains->{$type}},$env{'user.domain'});
5124: }
5125: if ($dom eq $env{'user.domain'}) {
5126: $can_request->{$type} = 1;
5127: }
5128: }
5129: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5130: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5131: if (@curr > 0) {
5132: foreach my $item (@curr) {
5133: if (ref($request_domains) eq 'HASH') {
5134: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5135: if ($otherdom ne '') {
5136: if (ref($request_domains->{$type}) eq 'ARRAY') {
5137: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5138: push(@{$request_domains->{$type}},$otherdom);
5139: }
5140: } else {
5141: push(@{$request_domains->{$type}},$otherdom);
5142: }
5143: }
5144: }
5145: }
5146: unless($dom eq $env{'user.domain'}) {
5147: $canreq ++;
5148: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5149: $can_request->{$type} = 1;
5150: }
5151: }
5152: }
5153: }
5154: }
5155: }
5156: return $canreq;
5157: }
5158:
5159: # ---------------------------------------------- Custom access rule evaluation
5160:
5161: sub customaccess {
5162: my ($priv,$uri)=@_;
5163: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5164: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5165: $udom = &LONCAPA::clean_domain($udom);
5166: $ucrs = &LONCAPA::clean_username($ucrs);
5167: my $access=0;
5168: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5169: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5170: if ($type eq 'user') {
5171: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5172: my ($tdom,$tuname)=split(m{/},$scope);
5173: if ($tdom) {
5174: if ($tdom ne $env{'user.domain'}) { next; }
5175: }
5176: if ($tuname) {
5177: if ($tuname ne $env{'user.name'}) { next; }
5178: }
5179: $access=($effect eq 'allow');
5180: last;
5181: }
5182: } else {
5183: if ($role) {
5184: if ($role ne $urole) { next; }
5185: }
5186: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5187: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5188: if ($tdom) {
5189: if ($tdom ne $udom) { next; }
5190: }
5191: if ($tcrs) {
5192: if ($tcrs ne $ucrs) { next; }
5193: }
5194: if ($tsec) {
5195: if ($tsec ne $usec) { next; }
5196: }
5197: $access=($effect eq 'allow');
5198: last;
5199: }
5200: if ($realm eq '' && $role eq '') {
5201: $access=($effect eq 'allow');
5202: }
5203: }
5204: }
5205: return $access;
5206: }
5207:
5208: # ------------------------------------------------- Check for a user privilege
5209:
5210: sub allowed {
5211: my ($priv,$uri,$symb,$role)=@_;
5212: my $ver_orguri=$uri;
5213: $uri=&deversion($uri);
5214: my $orguri=$uri;
5215: $uri=&declutter($uri);
5216:
5217: if ($priv eq 'evb') {
5218: # Evade communication block restrictions for specified role in a course
5219: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5220: return $1;
5221: } else {
5222: return;
5223: }
5224: }
5225:
5226: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5227: # Free bre access to adm and meta resources
5228: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5229: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5230: && ($priv eq 'bre')) {
5231: return 'F';
5232: }
5233:
5234: # Free bre access to user's own portfolio contents
5235: my ($space,$domain,$name,@dir)=split('/',$uri);
5236: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5237: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5238: my %setters;
5239: my ($startblock,$endblock) =
5240: &Apache::loncommon::blockcheck(\%setters,'port');
5241: if ($startblock && $endblock) {
5242: return 'B';
5243: } else {
5244: return 'F';
5245: }
5246: }
5247:
5248: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5249: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5250: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5251: if (exists($env{'request.course.id'})) {
5252: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5253: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5254: if (($domain eq $cdom) && ($name eq $cnum)) {
5255: my $courseprivid=$env{'request.course.id'};
5256: $courseprivid=~s/\_/\//;
5257: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5258: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5259: return $1;
5260: } else {
5261: if ($env{'request.course.sec'}) {
5262: $courseprivid.='/'.$env{'request.course.sec'};
5263: }
5264: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5265: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5266: return $2;
5267: }
5268: }
5269: }
5270: }
5271: }
5272:
5273: # Free bre to public access
5274:
5275: if ($priv eq 'bre') {
5276: my $copyright=&metadata($uri,'copyright');
5277: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5278: return 'F';
5279: }
5280: if ($copyright eq 'priv') {
5281: $uri=~/([^\/]+)\/([^\/]+)\//;
5282: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5283: return '';
5284: }
5285: }
5286: if ($copyright eq 'domain') {
5287: $uri=~/([^\/]+)\/([^\/]+)\//;
5288: unless (($env{'user.domain'} eq $1) ||
5289: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5290: return '';
5291: }
5292: }
5293: if ($env{'request.role'}=~ /li\.\//) {
5294: # Library role, so allow browsing of resources in this domain.
5295: return 'F';
5296: }
5297: if ($copyright eq 'custom') {
5298: unless (&customaccess($priv,$uri)) { return ''; }
5299: }
5300: }
5301: # Domain coordinator is trying to create a course
5302: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5303: # uri is the requested domain in this case.
5304: # comparison to 'request.role.domain' shows if the user has selected
5305: # a role of dc for the domain in question.
5306: return 'F' if ($uri eq $env{'request.role.domain'});
5307: }
5308:
5309: my $thisallowed='';
5310: my $statecond=0;
5311: my $courseprivid='';
5312:
5313: my $ownaccess;
5314: # Community Coordinator or Assistant Co-author browsing resource space.
5315: if (($priv eq 'bro') && ($env{'user.author'})) {
5316: if ($uri eq '') {
5317: $ownaccess = 1;
5318: } else {
5319: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5320: my $udom = $env{'user.domain'};
5321: my $uname = $env{'user.name'};
5322: if ($uri =~ m{^\Q$udom\E/?$}) {
5323: $ownaccess = 1;
5324: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5325: unless ($uri =~ m{\.\./}) {
5326: $ownaccess = 1;
5327: }
5328: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5329: my $now = time;
5330: if ($uri =~ m{^([^/]+)/?$}) {
5331: my $adom = $1;
5332: foreach my $key (keys(%env)) {
5333: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5334: my ($start,$end) = split('.',$env{$key});
5335: if (($now >= $start) && (!$end || $end < $now)) {
5336: $ownaccess = 1;
5337: last;
5338: }
5339: }
5340: }
5341: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5342: my $adom = $1;
5343: my $aname = $2;
5344: foreach my $role ('ca','aa') {
5345: if ($env{"user.role.$role./$adom/$aname"}) {
5346: my ($start,$end) =
5347: split('.',$env{"user.role.$role./$adom/$aname"});
5348: if (($now >= $start) && (!$end || $end < $now)) {
5349: $ownaccess = 1;
5350: last;
5351: }
5352: }
5353: }
5354: }
5355: }
5356: }
5357: }
5358: }
5359:
5360: # Course
5361:
5362: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5363: unless (($priv eq 'bro') && (!$ownaccess)) {
5364: $thisallowed.=$1;
5365: }
5366: }
5367:
5368: # Domain
5369:
5370: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5371: =~/\Q$priv\E\&([^\:]*)/) {
5372: unless (($priv eq 'bro') && (!$ownaccess)) {
5373: $thisallowed.=$1;
5374: }
5375: }
5376:
5377: # Course: uri itself is a course
5378: my $courseuri=$uri;
5379: $courseuri=~s/\_(\d)/\/$1/;
5380: $courseuri=~s/^([^\/])/\/$1/;
5381:
5382: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5383: =~/\Q$priv\E\&([^\:]*)/) {
5384: unless (($priv eq 'bro') && (!$ownaccess)) {
5385: $thisallowed.=$1;
5386: }
5387: }
5388:
5389: # URI is an uploaded document for this course, default permissions don't matter
5390: # not allowing 'edit' access (editupload) to uploaded course docs
5391: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5392: $thisallowed='';
5393: my ($match)=&is_on_map($uri);
5394: if ($match) {
5395: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5396: =~/\Q$priv\E\&([^\:]*)/) {
5397: $thisallowed.=$1;
5398: }
5399: } else {
5400: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5401: if ($refuri) {
5402: if ($refuri =~ m|^/adm/|) {
5403: $thisallowed='F';
5404: } else {
5405: $refuri=&declutter($refuri);
5406: my ($match) = &is_on_map($refuri);
5407: if ($match) {
5408: $thisallowed='F';
5409: }
5410: }
5411: }
5412: }
5413: }
5414:
5415: if ($priv eq 'bre'
5416: && $thisallowed ne 'F'
5417: && $thisallowed ne '2'
5418: && &is_portfolio_url($uri)) {
5419: $thisallowed = &portfolio_access($uri);
5420: }
5421:
5422: # Full access at system, domain or course-wide level? Exit.
5423: if ($thisallowed=~/F/) {
5424: return 'F';
5425: }
5426:
5427: # If this is generating or modifying users, exit with special codes
5428:
5429: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5430: if (($priv eq 'cca') || ($priv eq 'caa')) {
5431: my ($audom,$auname)=split('/',$uri);
5432: # no author name given, so this just checks on the general right to make a co-author in this domain
5433: unless ($auname) { return $thisallowed; }
5434: # an author name is given, so we are about to actually make a co-author for a certain account
5435: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5436: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5437: ($audom ne $env{'request.role.domain'}))) { return ''; }
5438: }
5439: return $thisallowed;
5440: }
5441: #
5442: # Gathered so far: system, domain and course wide privileges
5443: #
5444: # Course: See if uri or referer is an individual resource that is part of
5445: # the course
5446:
5447: if ($env{'request.course.id'}) {
5448:
5449: $courseprivid=$env{'request.course.id'};
5450: if ($env{'request.course.sec'}) {
5451: $courseprivid.='/'.$env{'request.course.sec'};
5452: }
5453: $courseprivid=~s/\_/\//;
5454: my $checkreferer=1;
5455: my ($match,$cond)=&is_on_map($uri);
5456: if ($match) {
5457: $statecond=$cond;
5458: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5459: =~/\Q$priv\E\&([^\:]*)/) {
5460: $thisallowed.=$1;
5461: $checkreferer=0;
5462: }
5463: }
5464:
5465: if ($checkreferer) {
5466: my $refuri=$env{'httpref.'.$orguri};
5467: unless ($refuri) {
5468: foreach my $key (keys(%env)) {
5469: if ($key=~/^httpref\..*\*/) {
5470: my $pattern=$key;
5471: $pattern=~s/^httpref\.\/res\///;
5472: $pattern=~s/\*/\[\^\/\]\+/g;
5473: $pattern=~s/\//\\\//g;
5474: if ($orguri=~/$pattern/) {
5475: $refuri=$env{$key};
5476: }
5477: }
5478: }
5479: }
5480:
5481: if ($refuri) {
5482: $refuri=&declutter($refuri);
5483: my ($match,$cond)=&is_on_map($refuri);
5484: if ($match) {
5485: my $refstatecond=$cond;
5486: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5487: =~/\Q$priv\E\&([^\:]*)/) {
5488: $thisallowed.=$1;
5489: $uri=$refuri;
5490: $statecond=$refstatecond;
5491: }
5492: }
5493: }
5494: }
5495: }
5496:
5497: #
5498: # Gathered now: all privileges that could apply, and condition number
5499: #
5500: #
5501: # Full or no access?
5502: #
5503:
5504: if ($thisallowed=~/F/) {
5505: return 'F';
5506: }
5507:
5508: unless ($thisallowed) {
5509: return '';
5510: }
5511:
5512: # Restrictions exist, deal with them
5513: #
5514: # C:according to course preferences
5515: # R:according to resource settings
5516: # L:unless locked
5517: # X:according to user session state
5518: #
5519:
5520: # Possibly locked functionality, check all courses
5521: # Locks might take effect only after 10 minutes cache expiration for other
5522: # courses, and 2 minutes for current course
5523:
5524: my $envkey;
5525: if ($thisallowed=~/L/) {
5526: foreach $envkey (keys(%env)) {
5527: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5528: my $courseid=$2;
5529: my $roleid=$1.'.'.$2;
5530: $courseid=~s/^\///;
5531: my $expiretime=600;
5532: if ($env{'request.role'} eq $roleid) {
5533: $expiretime=120;
5534: }
5535: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5536: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5537: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5538: &coursedescription($courseid,{'freshen_cache' => 1});
5539: }
5540: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5541: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5542: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5543: &log($env{'user.domain'},$env{'user.name'},
5544: $env{'user.home'},
5545: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5546: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5547: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5548: return '';
5549: }
5550: }
5551: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5552: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5553: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5554: &log($env{'user.domain'},$env{'user.name'},
5555: $env{'user.home'},
5556: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5557: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5558: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5559: return '';
5560: }
5561: }
5562: }
5563: }
5564: }
5565:
5566: #
5567: # Rest of the restrictions depend on selected course
5568: #
5569:
5570: unless ($env{'request.course.id'}) {
5571: if ($thisallowed eq 'A') {
5572: return 'A';
5573: } elsif ($thisallowed eq 'B') {
5574: return 'B';
5575: } else {
5576: return '1';
5577: }
5578: }
5579:
5580: #
5581: # Now user is definitely in a course
5582: #
5583:
5584:
5585: # Course preferences
5586:
5587: if ($thisallowed=~/C/) {
5588: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5589: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5590: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5591: =~/\Q$rolecode\E/) {
5592: if ($priv ne 'pch') {
5593: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5594: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5595: $env{'request.course.id'});
5596: }
5597: return '';
5598: }
5599:
5600: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5601: =~/\Q$unamedom\E/) {
5602: if ($priv ne 'pch') {
5603: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5604: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5605: $env{'request.course.id'});
5606: }
5607: return '';
5608: }
5609: }
5610:
5611: # Resource preferences
5612:
5613: if ($thisallowed=~/R/) {
5614: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5615: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5616: if ($priv ne 'pch') {
5617: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5618: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5619: }
5620: return '';
5621: }
5622: }
5623:
5624: # Restricted by state or randomout?
5625:
5626: if ($thisallowed=~/X/) {
5627: if ($env{'acc.randomout'}) {
5628: if (!$symb) { $symb=&symbread($uri,1); }
5629: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5630: return '';
5631: }
5632: }
5633: if (&condval($statecond)) {
5634: return '2';
5635: } else {
5636: return '';
5637: }
5638: }
5639:
5640: if ($thisallowed eq 'A') {
5641: return 'A';
5642: } elsif ($thisallowed eq 'B') {
5643: return 'B';
5644: }
5645: return 'F';
5646: }
5647:
5648: sub split_uri_for_cond {
5649: my $uri=&deversion(&declutter(shift));
5650: my @uriparts=split(/\//,$uri);
5651: my $filename=pop(@uriparts);
5652: my $pathname=join('/',@uriparts);
5653: return ($pathname,$filename);
5654: }
5655: # --------------------------------------------------- Is a resource on the map?
5656:
5657: sub is_on_map {
5658: my ($pathname,$filename) = &split_uri_for_cond(shift);
5659: #Trying to find the conditional for the file
5660: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5661: /\&\Q$filename\E\:([\d\|]+)\&/);
5662: if ($match) {
5663: return (1,$1);
5664: } else {
5665: return (0,0);
5666: }
5667: }
5668:
5669: # --------------------------------------------------------- Get symb from alias
5670:
5671: sub get_symb_from_alias {
5672: my $symb=shift;
5673: my ($map,$resid,$url)=&decode_symb($symb);
5674: # Already is a symb
5675: if ($url) { return $symb; }
5676: # Must be an alias
5677: my $aliassymb='';
5678: my %bighash;
5679: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5680: &GDBM_READER(),0640)) {
5681: my $rid=$bighash{'mapalias_'.$symb};
5682: if ($rid) {
5683: my ($mapid,$resid)=split(/\./,$rid);
5684: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5685: $resid,$bighash{'src_'.$rid});
5686: }
5687: untie %bighash;
5688: }
5689: return $aliassymb;
5690: }
5691:
5692: # ----------------------------------------------------------------- Define Role
5693:
5694: sub definerole {
5695: if (allowed('mcr','/')) {
5696: my ($rolename,$sysrole,$domrole,$courole)=@_;
5697: foreach my $role (split(':',$sysrole)) {
5698: my ($crole,$cqual)=split(/\&/,$role);
5699: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5700: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5701: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5702: return "refused:s:$crole&$cqual";
5703: }
5704: }
5705: }
5706: foreach my $role (split(':',$domrole)) {
5707: my ($crole,$cqual)=split(/\&/,$role);
5708: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5709: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5710: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5711: return "refused:d:$crole&$cqual";
5712: }
5713: }
5714: }
5715: foreach my $role (split(':',$courole)) {
5716: my ($crole,$cqual)=split(/\&/,$role);
5717: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5718: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5719: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5720: return "refused:c:$crole&$cqual";
5721: }
5722: }
5723: }
5724: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5725: "$env{'user.domain'}:$env{'user.name'}:".
5726: "rolesdef_$rolename=".
5727: escape($sysrole.'_'.$domrole.'_'.$courole);
5728: return reply($command,$env{'user.home'});
5729: } else {
5730: return 'refused';
5731: }
5732: }
5733:
5734: # ---------------- Make a metadata query against the network of library servers
5735:
5736: sub metadata_query {
5737: my ($query,$custom,$customshow,$server_array)=@_;
5738: my %rhash;
5739: my %libserv = &all_library();
5740: my @server_list = (defined($server_array) ? @$server_array
5741: : keys(%libserv) );
5742: for my $server (@server_list) {
5743: unless ($custom or $customshow) {
5744: my $reply=&reply("querysend:".&escape($query),$server);
5745: $rhash{$server}=$reply;
5746: }
5747: else {
5748: my $reply=&reply("querysend:".&escape($query).':'.
5749: &escape($custom).':'.&escape($customshow),
5750: $server);
5751: $rhash{$server}=$reply;
5752: }
5753: }
5754: return \%rhash;
5755: }
5756:
5757: # ----------------------------------------- Send log queries and wait for reply
5758:
5759: sub log_query {
5760: my ($uname,$udom,$query,%filters)=@_;
5761: my $uhome=&homeserver($uname,$udom);
5762: if ($uhome eq 'no_host') { return 'error: no_host'; }
5763: my $uhost=&hostname($uhome);
5764: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5765: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5766: $uhome);
5767: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5768: return get_query_reply($queryid);
5769: }
5770:
5771: # -------------------------- Update MySQL table for portfolio file
5772:
5773: sub update_portfolio_table {
5774: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5775: if ($group ne '') {
5776: $file_name =~s /^\Q$group\E//;
5777: }
5778: my $homeserver = &homeserver($uname,$udom);
5779: my $queryid=
5780: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5781: ':'.&escape($file_name).':'.$action,$homeserver);
5782: my $reply = &get_query_reply($queryid);
5783: return $reply;
5784: }
5785:
5786: # -------------------------- Update MySQL allusers table
5787:
5788: sub update_allusers_table {
5789: my ($uname,$udom,$names) = @_;
5790: my $homeserver = &homeserver($uname,$udom);
5791: my $queryid=
5792: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5793: 'lastname='.&escape($names->{'lastname'}).'%%'.
5794: 'firstname='.&escape($names->{'firstname'}).'%%'.
5795: 'middlename='.&escape($names->{'middlename'}).'%%'.
5796: 'generation='.&escape($names->{'generation'}).'%%'.
5797: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5798: 'id='.&escape($names->{'id'}),$homeserver);
5799: return;
5800: }
5801:
5802: # ------- Request retrieval of institutional classlists for course(s)
5803:
5804: sub fetch_enrollment_query {
5805: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5806: my $homeserver;
5807: my $maxtries = 1;
5808: if ($context eq 'automated') {
5809: $homeserver = $perlvar{'lonHostID'};
5810: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5811: } else {
5812: $homeserver = &homeserver($cnum,$dom);
5813: }
5814: my $host=&hostname($homeserver);
5815: my $cmd = '';
5816: foreach my $affiliate (keys(%{$affiliatesref})) {
5817: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5818: }
5819: $cmd =~ s/%%$//;
5820: $cmd = &escape($cmd);
5821: my $query = 'fetchenrollment';
5822: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5823: unless ($queryid=~/^\Q$host\E\_/) {
5824: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5825: return 'error: '.$queryid;
5826: }
5827: my $reply = &get_query_reply($queryid);
5828: my $tries = 1;
5829: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5830: $reply = &get_query_reply($queryid);
5831: $tries ++;
5832: }
5833: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5834: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5835: } else {
5836: my @responses = split(/:/,$reply);
5837: if ($homeserver eq $perlvar{'lonHostID'}) {
5838: foreach my $line (@responses) {
5839: my ($key,$value) = split(/=/,$line,2);
5840: $$replyref{$key} = $value;
5841: }
5842: } else {
5843: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5844: foreach my $line (@responses) {
5845: my ($key,$value) = split(/=/,$line);
5846: $$replyref{$key} = $value;
5847: if ($value > 0) {
5848: foreach my $item (@{$$affiliatesref{$key}}) {
5849: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5850: my $destname = $pathname.'/'.$filename;
5851: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5852: if ($xml_classlist =~ /^error/) {
5853: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5854: } else {
5855: if ( open(FILE,">$destname") ) {
5856: print FILE &unescape($xml_classlist);
5857: close(FILE);
5858: } else {
5859: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5860: }
5861: }
5862: }
5863: }
5864: }
5865: }
5866: return 'ok';
5867: }
5868: return 'error';
5869: }
5870:
5871: sub get_query_reply {
5872: my $queryid=shift;
5873: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5874: my $reply='';
5875: for (1..100) {
5876: sleep 2;
5877: if (-e $replyfile.'.end') {
5878: if (open(my $fh,$replyfile)) {
5879: $reply = join('',<$fh>);
5880: close($fh);
5881: } else { return 'error: reply_file_error'; }
5882: return &unescape($reply);
5883: }
5884: }
5885: return 'timeout:'.$queryid;
5886: }
5887:
5888: sub courselog_query {
5889: #
5890: # possible filters:
5891: # url: url or symb
5892: # username
5893: # domain
5894: # action: view, submit, grade
5895: # start: timestamp
5896: # end: timestamp
5897: #
5898: my (%filters)=@_;
5899: unless ($env{'request.course.id'}) { return 'no_course'; }
5900: if ($filters{'url'}) {
5901: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5902: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5903: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5904: }
5905: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5906: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5907: return &log_query($cname,$cdom,'courselog',%filters);
5908: }
5909:
5910: sub userlog_query {
5911: #
5912: # possible filters:
5913: # action: log check role
5914: # start: timestamp
5915: # end: timestamp
5916: #
5917: my ($uname,$udom,%filters)=@_;
5918: return &log_query($uname,$udom,'userlog',%filters);
5919: }
5920:
5921: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5922:
5923: sub auto_run {
5924: my ($cnum,$cdom) = @_;
5925: my $response = 0;
5926: my $settings;
5927: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5928: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5929: $settings = $domconfig{'autoenroll'};
5930: if ($settings->{'run'} eq '1') {
5931: $response = 1;
5932: }
5933: } else {
5934: my $homeserver;
5935: if (&is_course($cdom,$cnum)) {
5936: $homeserver = &homeserver($cnum,$cdom);
5937: } else {
5938: $homeserver = &domain($cdom,'primary');
5939: }
5940: if ($homeserver ne 'no_host') {
5941: $response = &reply('autorun:'.$cdom,$homeserver);
5942: }
5943: }
5944: return $response;
5945: }
5946:
5947: sub auto_get_sections {
5948: my ($cnum,$cdom,$inst_coursecode) = @_;
5949: my $homeserver;
5950: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5951: $homeserver = &homeserver($cnum,$cdom);
5952: }
5953: if (!defined($homeserver)) {
5954: if ($cdom =~ /^$match_domain$/) {
5955: $homeserver = &domain($cdom,'primary');
5956: }
5957: }
5958: my @secs;
5959: if (defined($homeserver)) {
5960: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5961: unless ($response eq 'refused') {
5962: @secs = split(/:/,$response);
5963: }
5964: }
5965: return @secs;
5966: }
5967:
5968: sub auto_new_course {
5969: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5970: my $homeserver = &homeserver($cnum,$cdom);
5971: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5972: return $response;
5973: }
5974:
5975: sub auto_validate_courseID {
5976: my ($cnum,$cdom,$inst_course_id) = @_;
5977: my $homeserver = &homeserver($cnum,$cdom);
5978: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5979: return $response;
5980: }
5981:
5982: sub auto_validate_instcode {
5983: my ($cnum,$cdom,$instcode,$owner) = @_;
5984: my ($homeserver,$response);
5985: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5986: $homeserver = &homeserver($cnum,$cdom);
5987: }
5988: if (!defined($homeserver)) {
5989: if ($cdom =~ /^$match_domain$/) {
5990: $homeserver = &domain($cdom,'primary');
5991: }
5992: }
5993: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
5994: &escape($instcode).':'.&escape($owner),$homeserver));
5995: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
5996: return ($outcome,$description);
5997: }
5998:
5999: sub auto_create_password {
6000: my ($cnum,$cdom,$authparam,$udom) = @_;
6001: my ($homeserver,$response);
6002: my $create_passwd = 0;
6003: my $authchk = '';
6004: if ($udom =~ /^$match_domain$/) {
6005: $homeserver = &domain($udom,'primary');
6006: }
6007: if ($homeserver eq '') {
6008: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6009: $homeserver = &homeserver($cnum,$cdom);
6010: }
6011: }
6012: if ($homeserver eq '') {
6013: $authchk = 'nodomain';
6014: } else {
6015: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6016: if ($response eq 'refused') {
6017: $authchk = 'refused';
6018: } else {
6019: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6020: }
6021: }
6022: return ($authparam,$create_passwd,$authchk);
6023: }
6024:
6025: sub auto_photo_permission {
6026: my ($cnum,$cdom,$students) = @_;
6027: my $homeserver = &homeserver($cnum,$cdom);
6028: my ($outcome,$perm_reqd,$conditions) =
6029: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6030: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6031: return (undef,undef);
6032: }
6033: return ($outcome,$perm_reqd,$conditions);
6034: }
6035:
6036: sub auto_checkphotos {
6037: my ($uname,$udom,$pid) = @_;
6038: my $homeserver = &homeserver($uname,$udom);
6039: my ($result,$resulttype);
6040: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6041: &escape($uname).':'.&escape($pid),
6042: $homeserver));
6043: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6044: return (undef,undef);
6045: }
6046: if ($outcome) {
6047: ($result,$resulttype) = split(/:/,$outcome);
6048: }
6049: return ($result,$resulttype);
6050: }
6051:
6052: sub auto_photochoice {
6053: my ($cnum,$cdom) = @_;
6054: my $homeserver = &homeserver($cnum,$cdom);
6055: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6056: &escape($cdom),
6057: $homeserver)));
6058: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6059: return (undef,undef);
6060: }
6061: return ($update,$comment);
6062: }
6063:
6064: sub auto_photoupdate {
6065: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6066: my $homeserver = &homeserver($cnum,$dom);
6067: my $host=&hostname($homeserver);
6068: my $cmd = '';
6069: my $maxtries = 1;
6070: foreach my $affiliate (keys(%{$affiliatesref})) {
6071: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6072: }
6073: $cmd =~ s/%%$//;
6074: $cmd = &escape($cmd);
6075: my $query = 'institutionalphotos';
6076: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6077: unless ($queryid=~/^\Q$host\E\_/) {
6078: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6079: return 'error: '.$queryid;
6080: }
6081: my $reply = &get_query_reply($queryid);
6082: my $tries = 1;
6083: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6084: $reply = &get_query_reply($queryid);
6085: $tries ++;
6086: }
6087: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6088: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6089: } else {
6090: my @responses = split(/:/,$reply);
6091: my $outcome = shift(@responses);
6092: foreach my $item (@responses) {
6093: my ($key,$value) = split(/=/,$item);
6094: $$photo{$key} = $value;
6095: }
6096: return $outcome;
6097: }
6098: return 'error';
6099: }
6100:
6101: sub auto_instcode_format {
6102: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
6103: $cat_order) = @_;
6104: my $courses = '';
6105: my @homeservers;
6106: if ($caller eq 'global') {
6107: my %servers = &get_servers($codedom,'library');
6108: foreach my $tryserver (keys(%servers)) {
6109: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6110: push(@homeservers,$tryserver);
6111: }
6112: }
6113: } elsif ($caller eq 'requests') {
6114: if ($codedom =~ /^$match_domain$/) {
6115: my $chome = &domain($codedom,'primary');
6116: unless ($chome eq 'no_host') {
6117: push(@homeservers,$chome);
6118: }
6119: }
6120: } else {
6121: push(@homeservers,&homeserver($caller,$codedom));
6122: }
6123: foreach my $code (keys(%{$instcodes})) {
6124: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
6125: }
6126: chop($courses);
6127: my $ok_response = 0;
6128: my $response;
6129: while (@homeservers > 0 && $ok_response == 0) {
6130: my $server = shift(@homeservers);
6131: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
6132: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
6133: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
6134: split(/:/,$response);
6135: %{$codes} = (%{$codes},&str2hash($codes_str));
6136: push(@{$codetitles},&str2array($codetitles_str));
6137: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
6138: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
6139: $ok_response = 1;
6140: }
6141: }
6142: if ($ok_response) {
6143: return 'ok';
6144: } else {
6145: return $response;
6146: }
6147: }
6148:
6149: sub auto_instcode_defaults {
6150: my ($domain,$returnhash,$code_order) = @_;
6151: my @homeservers;
6152:
6153: my %servers = &get_servers($domain,'library');
6154: foreach my $tryserver (keys(%servers)) {
6155: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6156: push(@homeservers,$tryserver);
6157: }
6158: }
6159:
6160: my $response;
6161: foreach my $server (@homeservers) {
6162: $response=&reply('autoinstcodedefaults:'.$domain,$server);
6163: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6164:
6165: foreach my $pair (split(/\&/,$response)) {
6166: my ($name,$value)=split(/\=/,$pair);
6167: if ($name eq 'code_order') {
6168: @{$code_order} = split(/\&/,&unescape($value));
6169: } else {
6170: $returnhash->{&unescape($name)}=&unescape($value);
6171: }
6172: }
6173: return 'ok';
6174: }
6175:
6176: return $response;
6177: }
6178:
6179: sub auto_possible_instcodes {
6180: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
6181: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
6182: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
6183: return;
6184: }
6185: my (@homeservers,$uhome);
6186: if (defined(&domain($domain,'primary'))) {
6187: $uhome=&domain($domain,'primary');
6188: push(@homeservers,&domain($domain,'primary'));
6189: } else {
6190: my %servers = &get_servers($domain,'library');
6191: foreach my $tryserver (keys(%servers)) {
6192: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6193: push(@homeservers,$tryserver);
6194: }
6195: }
6196: }
6197: my $response;
6198: foreach my $server (@homeservers) {
6199: $response=&reply('autopossibleinstcodes:'.$domain,$server);
6200: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6201: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
6202: split(':',$response);
6203: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
6204: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
6205: foreach my $item (split('&',$cat_title)) {
6206: my ($name,$value)=split('=',$item);
6207: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
6208: }
6209: foreach my $item (split('&',$cat_order)) {
6210: my ($name,$value)=split('=',$item);
6211: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
6212: }
6213: return 'ok';
6214: }
6215: return $response;
6216: }
6217:
6218: sub auto_courserequest_checks {
6219: my ($dom) = @_;
6220: my ($homeserver,%validations);
6221: if ($dom =~ /^$match_domain$/) {
6222: $homeserver = &domain($dom,'primary');
6223: }
6224: unless ($homeserver eq 'no_host') {
6225: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
6226: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
6227: my @items = split(/&/,$response);
6228: foreach my $item (@items) {
6229: my ($key,$value) = split('=',$item);
6230: $validations{&unescape($key)} = &thaw_unescape($value);
6231: }
6232: }
6233: }
6234: return %validations;
6235: }
6236:
6237: sub auto_courserequest_validation {
6238: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
6239: my ($homeserver,$response);
6240: if ($dom =~ /^$match_domain$/) {
6241: $homeserver = &domain($dom,'primary');
6242: }
6243: unless ($homeserver eq 'no_host') {
6244:
6245: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
6246: ':'.&escape($crstype).':'.&escape($inststatuslist).
6247: ':'.&escape($instcode).':'.&escape($instseclist),
6248: $homeserver));
6249: }
6250: return $response;
6251: }
6252:
6253: sub auto_validate_class_sec {
6254: my ($cdom,$cnum,$owners,$inst_class) = @_;
6255: my $homeserver = &homeserver($cnum,$cdom);
6256: my $ownerlist;
6257: if (ref($owners) eq 'ARRAY') {
6258: $ownerlist = join(',',@{$owners});
6259: } else {
6260: $ownerlist = $owners;
6261: }
6262: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6263: &escape($ownerlist).':'.$cdom,$homeserver);
6264: return $response;
6265: }
6266:
6267: # ------------------------------------------------------- Course Group routines
6268:
6269: sub get_coursegroups {
6270: my ($cdom,$cnum,$group,$namespace) = @_;
6271: return(&dump($namespace,$cdom,$cnum,$group));
6272: }
6273:
6274: sub modify_coursegroup {
6275: my ($cdom,$cnum,$groupsettings) = @_;
6276: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6277: }
6278:
6279: sub toggle_coursegroup_status {
6280: my ($cdom,$cnum,$group,$action) = @_;
6281: my ($from_namespace,$to_namespace);
6282: if ($action eq 'delete') {
6283: $from_namespace = 'coursegroups';
6284: $to_namespace = 'deleted_groups';
6285: } else {
6286: $from_namespace = 'deleted_groups';
6287: $to_namespace = 'coursegroups';
6288: }
6289: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6290: if (my $tmp = &error(%curr_group)) {
6291: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6292: return ('read error',$tmp);
6293: } else {
6294: my %savedsettings = %curr_group;
6295: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6296: my $deloutcome;
6297: if ($result eq 'ok') {
6298: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6299: } else {
6300: return ('write error',$result);
6301: }
6302: if ($deloutcome eq 'ok') {
6303: return 'ok';
6304: } else {
6305: return ('delete error',$deloutcome);
6306: }
6307: }
6308: }
6309:
6310: sub modify_group_roles {
6311: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6312: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6313: my $role = 'gr/'.&escape($userprivs);
6314: my ($uname,$udom) = split(/:/,$user);
6315: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6316: if ($result eq 'ok') {
6317: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6318: }
6319: return $result;
6320: }
6321:
6322: sub modify_coursegroup_membership {
6323: my ($cdom,$cnum,$membership) = @_;
6324: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6325: return $result;
6326: }
6327:
6328: sub get_active_groups {
6329: my ($udom,$uname,$cdom,$cnum) = @_;
6330: my $now = time;
6331: my %groups = ();
6332: foreach my $key (keys(%env)) {
6333: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6334: my ($start,$end) = split(/\./,$env{$key});
6335: if (($end!=0) && ($end<$now)) { next; }
6336: if (($start!=0) && ($start>$now)) { next; }
6337: if ($1 eq $cdom && $2 eq $cnum) {
6338: $groups{$3} = $env{$key} ;
6339: }
6340: }
6341: }
6342: return %groups;
6343: }
6344:
6345: sub get_group_membership {
6346: my ($cdom,$cnum,$group) = @_;
6347: return(&dump('groupmembership',$cdom,$cnum,$group));
6348: }
6349:
6350: sub get_users_groups {
6351: my ($udom,$uname,$courseid) = @_;
6352: my @usersgroups;
6353: my $cachetime=1800;
6354:
6355: my $hashid="$udom:$uname:$courseid";
6356: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6357: if (defined($cached)) {
6358: @usersgroups = split(/:/,$grouplist);
6359: } else {
6360: $grouplist = '';
6361: my $courseurl = &courseid_to_courseurl($courseid);
6362: my $extra = &freeze_escape({'skipcheck' => 1});
6363: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
6364: my $access_end = $env{'course.'.$courseid.
6365: '.default_enrollment_end_date'};
6366: my $now = time;
6367: foreach my $key (keys(%roleshash)) {
6368: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6369: my $group = $1;
6370: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6371: my $start = $2;
6372: my $end = $1;
6373: if ($start == -1) { next; } # deleted from group
6374: if (($start!=0) && ($start>$now)) { next; }
6375: if (($end!=0) && ($end<$now)) {
6376: if ($access_end && $access_end < $now) {
6377: if ($access_end - $end < 86400) {
6378: push(@usersgroups,$group);
6379: }
6380: }
6381: next;
6382: }
6383: push(@usersgroups,$group);
6384: }
6385: }
6386: }
6387: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6388: $grouplist = join(':',@usersgroups);
6389: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6390: }
6391: return @usersgroups;
6392: }
6393:
6394: sub devalidate_getgroups_cache {
6395: my ($udom,$uname,$cdom,$cnum)=@_;
6396: my $courseid = $cdom.'_'.$cnum;
6397:
6398: my $hashid="$udom:$uname:$courseid";
6399: &devalidate_cache_new('getgroups',$hashid);
6400: }
6401:
6402: # ------------------------------------------------------------------ Plain Text
6403:
6404: sub plaintext {
6405: my ($short,$type,$cid,$forcedefault) = @_;
6406: if ($short =~ m{^cr/}) {
6407: return (split('/',$short))[-1];
6408: }
6409: if (!defined($cid)) {
6410: $cid = $env{'request.course.id'};
6411: }
6412: my %rolenames = (
6413: Course => 'std',
6414: Community => 'alt1',
6415: );
6416: if ($cid ne '') {
6417: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6418: unless ($forcedefault) {
6419: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6420: &Apache::lonlocal::mt_escape(\$roletext);
6421: return &Apache::lonlocal::mt($roletext);
6422: }
6423: }
6424: }
6425: if ((defined($type)) && (defined($rolenames{$type})) &&
6426: (defined($rolenames{$type})) &&
6427: (defined($prp{$short}{$rolenames{$type}}))) {
6428: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6429: } elsif ($cid ne '') {
6430: my $crstype = $env{'course.'.$cid.'.type'};
6431: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6432: (defined($prp{$short}{$rolenames{$crstype}}))) {
6433: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6434: }
6435: }
6436: return &Apache::lonlocal::mt($prp{$short}{'std'});
6437: }
6438:
6439: # ----------------------------------------------------------------- Assign Role
6440:
6441: sub assignrole {
6442: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6443: $context)=@_;
6444: my $mrole;
6445: if ($role =~ /^cr\//) {
6446: my $cwosec=$url;
6447: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6448: unless (&allowed('ccr',$cwosec)) {
6449: my $refused = 1;
6450: if ($context eq 'requestcourses') {
6451: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6452: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6453: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6454: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6455: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6456: if ($crsenv{'internal.courseowner'} eq
6457: $env{'user.name'}.':'.$env{'user.domain'}) {
6458: $refused = '';
6459: }
6460: }
6461: }
6462: }
6463: }
6464: if ($refused) {
6465: &logthis('Refused custom assignrole: '.
6466: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6467: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6468: return 'refused';
6469: }
6470: }
6471: $mrole='cr';
6472: } elsif ($role =~ /^gr\//) {
6473: my $cwogrp=$url;
6474: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6475: unless (&allowed('mdg',$cwogrp)) {
6476: &logthis('Refused group assignrole: '.
6477: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6478: $env{'user.name'}.' at '.$env{'user.domain'});
6479: return 'refused';
6480: }
6481: $mrole='gr';
6482: } else {
6483: my $cwosec=$url;
6484: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6485: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6486: my $refused;
6487: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6488: if (!(&allowed('c'.$role,$url))) {
6489: $refused = 1;
6490: }
6491: } else {
6492: $refused = 1;
6493: }
6494: if ($refused) {
6495: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6496: if (!$selfenroll && $context eq 'course') {
6497: my %crsenv;
6498: if ($role eq 'cc' || $role eq 'co') {
6499: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6500: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
6501: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
6502: if ($crsenv{'internal.courseowner'} eq
6503: $env{'user.name'}.':'.$env{'user.domain'}) {
6504: $refused = '';
6505: }
6506: }
6507: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
6508: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
6509: if ($crsenv{'internal.courseowner'} eq
6510: $env{'user.name'}.':'.$env{'user.domain'}) {
6511: $refused = '';
6512: }
6513: }
6514: }
6515: }
6516: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6517: $refused = '';
6518: } elsif ($context eq 'requestcourses') {
6519: my @possroles = ('st','ta','ep','in','cc','co');
6520: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6521: my $wrongcc;
6522: if ($cnum =~ /^$match_community$/) {
6523: $wrongcc = 1 if ($role eq 'cc');
6524: } else {
6525: $wrongcc = 1 if ($role eq 'co');
6526: }
6527: unless ($wrongcc) {
6528: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6529: if ($crsenv{'internal.courseowner'} eq
6530: $env{'user.name'}.':'.$env{'user.domain'}) {
6531: $refused = '';
6532: }
6533: }
6534: }
6535: }
6536: if ($refused) {
6537: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6538: ' '.$role.' '.$end.' '.$start.' by '.
6539: $env{'user.name'}.' at '.$env{'user.domain'});
6540: return 'refused';
6541: }
6542: }
6543: }
6544: $mrole=$role;
6545: }
6546: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6547: "$udom:$uname:$url".'_'."$mrole=$role";
6548: if ($end) { $command.='_'.$end; }
6549: if ($start) {
6550: if ($end) {
6551: $command.='_'.$start;
6552: } else {
6553: $command.='_0_'.$start;
6554: }
6555: }
6556: my $origstart = $start;
6557: my $origend = $end;
6558: my $delflag;
6559: # actually delete
6560: if ($deleteflag) {
6561: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6562: # modify command to delete the role
6563: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6564: "$udom:$uname:$url".'_'."$mrole";
6565: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6566: # set start and finish to negative values for userrolelog
6567: $start=-1;
6568: $end=-1;
6569: $delflag = 1;
6570: }
6571: }
6572: # send command
6573: my $answer=&reply($command,&homeserver($uname,$udom));
6574: # log new user role if status is ok
6575: if ($answer eq 'ok') {
6576: &userrolelog($role,$uname,$udom,$url,$start,$end);
6577: # for course roles, perform group memberships changes triggered by role change.
6578: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6579: unless ($role =~ /^gr/) {
6580: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6581: $origstart,$selfenroll,$context);
6582: }
6583: if ($role eq 'cc') {
6584: &autoupdate_coowners($url,$end,$start,$uname,$udom);
6585: }
6586: }
6587: return $answer;
6588: }
6589:
6590: sub autoupdate_coowners {
6591: my ($url,$end,$start,$uname,$udom) = @_;
6592: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
6593: if (($cdom ne '') && ($cnum ne '')) {
6594: my $now = time;
6595: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
6596: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
6597: my %coursehash = &coursedescription($cdom.'_'.$cnum);
6598: my $instcode = $coursehash{'internal.coursecode'};
6599: if ($instcode ne '') {
6600: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
6601: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
6602: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
6603: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
6604: if ($result eq 'valid') {
6605: if ($coursehash{'internal.co-owners'}) {
6606: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6607: push(@newcoowners,$coowner);
6608: }
6609: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
6610: push(@newcoowners,$uname.':'.$udom);
6611: }
6612: @newcoowners = sort(@newcoowners);
6613: } else {
6614: push(@newcoowners,$uname.':'.$udom);
6615: }
6616: } else {
6617: if ($coursehash{'internal.co-owners'}) {
6618: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6619: unless ($coowner eq $uname.':'.$udom) {
6620: push(@newcoowners,$coowner);
6621: }
6622: }
6623: unless (@newcoowners > 0) {
6624: $delcoowners = 1;
6625: $coowners = '';
6626: }
6627: }
6628: }
6629: if (@newcoowners || $delcoowners) {
6630: &store_coowners($cdom,$cnum,$coursehash{'home'},
6631: $delcoowners,@newcoowners);
6632: }
6633: }
6634: }
6635: }
6636: }
6637: }
6638: }
6639:
6640: sub store_coowners {
6641: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
6642: my $cid = $cdom.'_'.$cnum;
6643: my ($coowners,$delresult,$putresult);
6644: if (@newcoowners) {
6645: $coowners = join(',',@newcoowners);
6646: my %coownershash = (
6647: 'internal.co-owners' => $coowners,
6648: );
6649: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
6650: if ($putresult eq 'ok') {
6651: if ($env{'course.'.$cid.'.num'} eq $cnum) {
6652: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
6653: }
6654: }
6655: }
6656: if ($delcoowners) {
6657: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
6658: if ($delresult eq 'ok') {
6659: if ($env{'course.'.$cid.'.internal.co-owners'}) {
6660: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
6661: }
6662: }
6663: }
6664: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
6665: my %crsinfo =
6666: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6667: if (ref($crsinfo{$cid}) eq 'HASH') {
6668: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
6669: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
6670: }
6671: }
6672: }
6673:
6674: # -------------------------------------------------- Modify user authentication
6675: # Overrides without validation
6676:
6677: sub modifyuserauth {
6678: my ($udom,$uname,$umode,$upass)=@_;
6679: my $uhome=&homeserver($uname,$udom);
6680: unless (&allowed('mau',$udom)) { return 'refused'; }
6681: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6682: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6683: ' in domain '.$env{'request.role.domain'});
6684: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6685: &escape($upass),$uhome);
6686: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6687: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6688: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6689: &log($udom,,$uname,$uhome,
6690: 'Authentication changed by '.$env{'user.domain'}.', '.
6691: $env{'user.name'}.', '.$umode.
6692: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6693: unless ($reply eq 'ok') {
6694: &logthis('Authentication mode error: '.$reply);
6695: return 'error: '.$reply;
6696: }
6697: return 'ok';
6698: }
6699:
6700: # --------------------------------------------------------------- Modify a user
6701:
6702: sub modifyuser {
6703: my ($udom, $uname, $uid,
6704: $umode, $upass, $first,
6705: $middle, $last, $gene,
6706: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
6707: $udom= &LONCAPA::clean_domain($udom);
6708: $uname=&LONCAPA::clean_username($uname);
6709: my $showcandelete = 'none';
6710: if (ref($candelete) eq 'ARRAY') {
6711: if (@{$candelete} > 0) {
6712: $showcandelete = join(', ',@{$candelete});
6713: }
6714: }
6715: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6716: $umode.', '.$first.', '.$middle.', '.
6717: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
6718: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6719: ' desiredhome not specified').
6720: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6721: ' in domain '.$env{'request.role.domain'});
6722: my $uhome=&homeserver($uname,$udom,'true');
6723: my $newuser;
6724: if ($uhome eq 'no_host') {
6725: $newuser = 1;
6726: }
6727: # ----------------------------------------------------------------- Create User
6728: if (($uhome eq 'no_host') &&
6729: (($umode && $upass) || ($umode eq 'localauth'))) {
6730: my $unhome='';
6731: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6732: $unhome = $desiredhome;
6733: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6734: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6735: } else { # load balancing routine for determining $unhome
6736: my $loadm=10000000;
6737: my %servers = &get_servers($udom,'library');
6738: foreach my $tryserver (keys(%servers)) {
6739: my $answer=reply('load',$tryserver);
6740: if (($answer=~/\d+/) && ($answer<$loadm)) {
6741: $loadm=$answer;
6742: $unhome=$tryserver;
6743: }
6744: }
6745: }
6746: if (($unhome eq '') || ($unhome eq 'no_host')) {
6747: return 'error: unable to find a home server for '.$uname.
6748: ' in domain '.$udom;
6749: }
6750: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6751: &escape($upass),$unhome);
6752: unless ($reply eq 'ok') {
6753: return 'error: '.$reply;
6754: }
6755: $uhome=&homeserver($uname,$udom,'true');
6756: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6757: return 'error: unable verify users home machine.';
6758: }
6759: } # End of creation of new user
6760: # ---------------------------------------------------------------------- Add ID
6761: if ($uid) {
6762: $uid=~tr/A-Z/a-z/;
6763: my %uidhash=&idrget($udom,$uname);
6764: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6765: && (!$forceid)) {
6766: unless ($uid eq $uidhash{$uname}) {
6767: return 'error: user id "'.$uid.'" does not match '.
6768: 'current user id "'.$uidhash{$uname}.'".';
6769: }
6770: } else {
6771: &idput($udom,($uname => $uid));
6772: }
6773: }
6774: # -------------------------------------------------------------- Add names, etc
6775: my @tmp=&get('environment',
6776: ['firstname','middlename','lastname','generation','id',
6777: 'permanentemail','inststatus'],
6778: $udom,$uname);
6779: my (%names,%oldnames);
6780: if ($tmp[0] =~ m/^error:.*/) {
6781: %names=();
6782: } else {
6783: %names = @tmp;
6784: %oldnames = %names;
6785: }
6786: #
6787: # If name, email and/or uid are blank (e.g., because an uploaded file
6788: # of users did not contain them), do not overwrite existing values
6789: # unless field is in $candelete array ref.
6790: #
6791:
6792: my @fields = ('firstname','middlename','lastname','generation',
6793: 'permanentemail','id');
6794: my %newvalues;
6795: if (ref($candelete) eq 'ARRAY') {
6796: foreach my $field (@fields) {
6797: if (grep(/^\Q$field\E$/,@{$candelete})) {
6798: if ($field eq 'firstname') {
6799: $names{$field} = $first;
6800: } elsif ($field eq 'middlename') {
6801: $names{$field} = $middle;
6802: } elsif ($field eq 'lastname') {
6803: $names{$field} = $last;
6804: } elsif ($field eq 'generation') {
6805: $names{$field} = $gene;
6806: } elsif ($field eq 'permanentemail') {
6807: $names{$field} = $email;
6808: } elsif ($field eq 'id') {
6809: $names{$field} = $uid;
6810: }
6811: }
6812: }
6813: }
6814: if ($first) { $names{'firstname'} = $first; }
6815: if (defined($middle)) { $names{'middlename'} = $middle; }
6816: if ($last) { $names{'lastname'} = $last; }
6817: if (defined($gene)) { $names{'generation'} = $gene; }
6818: if ($email) {
6819: $email=~s/[^\w\@\.\-\,]//gs;
6820: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6821: }
6822: if ($uid) { $names{'id'} = $uid; }
6823: if (defined($inststatus)) {
6824: $names{'inststatus'} = '';
6825: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6826: if (ref($usertypes) eq 'HASH') {
6827: my @okstatuses;
6828: foreach my $item (split(/:/,$inststatus)) {
6829: if (defined($usertypes->{$item})) {
6830: push(@okstatuses,$item);
6831: }
6832: }
6833: if (@okstatuses) {
6834: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6835: }
6836: }
6837: }
6838: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
6839: $umode.', '.$first.', '.$middle.', '.
6840: $last.', '.$gene.', '.$email.', '.$inststatus;
6841: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6842: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6843: } else {
6844: $logmsg .= ' during self creation';
6845: }
6846: my $changed;
6847: if ($newuser) {
6848: $changed = 1;
6849: } else {
6850: foreach my $field (@fields) {
6851: if ($names{$field} ne $oldnames{$field}) {
6852: $changed = 1;
6853: last;
6854: }
6855: }
6856: }
6857: unless ($changed) {
6858: $logmsg = 'No changes in user information needed for: '.$logmsg;
6859: &logthis($logmsg);
6860: return 'ok';
6861: }
6862: my $reply = &put('environment', \%names, $udom,$uname);
6863: if ($reply ne 'ok') {
6864: return 'error: '.$reply;
6865: }
6866: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
6867: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
6868: }
6869: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
6870: &devalidate_cache_new('namescache',$uname.':'.$udom);
6871: $logmsg = 'Success modifying user '.$logmsg;
6872: &logthis($logmsg);
6873: return 'ok';
6874: }
6875:
6876: # -------------------------------------------------------------- Modify student
6877:
6878: sub modifystudent {
6879: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
6880: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
6881: $selfenroll,$context,$inststatus)=@_;
6882: if (!$cid) {
6883: unless ($cid=$env{'request.course.id'}) {
6884: return 'not_in_class';
6885: }
6886: }
6887: # --------------------------------------------------------------- Make the user
6888: my $reply=&modifyuser
6889: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
6890: $desiredhome,$email,$inststatus);
6891: unless ($reply eq 'ok') { return $reply; }
6892: # This will cause &modify_student_enrollment to get the uid from the
6893: # students environment
6894: $uid = undef if (!$forceid);
6895: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
6896: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
6897: return $reply;
6898: }
6899:
6900: sub modify_student_enrollment {
6901: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
6902: my ($cdom,$cnum,$chome);
6903: if (!$cid) {
6904: unless ($cid=$env{'request.course.id'}) {
6905: return 'not_in_class';
6906: }
6907: $cdom=$env{'course.'.$cid.'.domain'};
6908: $cnum=$env{'course.'.$cid.'.num'};
6909: } else {
6910: ($cdom,$cnum)=split(/_/,$cid);
6911: }
6912: $chome=$env{'course.'.$cid.'.home'};
6913: if (!$chome) {
6914: $chome=&homeserver($cnum,$cdom);
6915: }
6916: if (!$chome) { return 'unknown_course'; }
6917: # Make sure the user exists
6918: my $uhome=&homeserver($uname,$udom);
6919: if (($uhome eq '') || ($uhome eq 'no_host')) {
6920: return 'error: no such user';
6921: }
6922: # Get student data if we were not given enough information
6923: if (!defined($first) || $first eq '' ||
6924: !defined($last) || $last eq '' ||
6925: !defined($uid) || $uid eq '' ||
6926: !defined($middle) || $middle eq '' ||
6927: !defined($gene) || $gene eq '') {
6928: # They did not supply us with enough data to enroll the student, so
6929: # we need to pick up more information.
6930: my %tmp = &get('environment',
6931: ['firstname','middlename','lastname', 'generation','id']
6932: ,$udom,$uname);
6933:
6934: #foreach my $key (keys(%tmp)) {
6935: # &logthis("key $key = ".$tmp{$key});
6936: #}
6937: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
6938: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
6939: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
6940: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
6941: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
6942: }
6943: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
6944: my $reply=cput('classlist',
6945: {"$uname:$udom" =>
6946: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
6947: $cdom,$cnum);
6948: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
6949: return 'error: '.$reply;
6950: } else {
6951: &devalidate_getsection_cache($udom,$uname,$cid);
6952: }
6953: # Add student role to user
6954: my $uurl='/'.$cid;
6955: $uurl=~s/\_/\//g;
6956: if ($usec) {
6957: $uurl.='/'.$usec;
6958: }
6959: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
6960: }
6961:
6962: sub format_name {
6963: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
6964: my $name;
6965: if ($first ne 'lastname') {
6966: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
6967: } else {
6968: if ($lastname=~/\S/) {
6969: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
6970: $name=~s/\s+,/,/;
6971: } else {
6972: $name.= $firstname.' '.$middlename.' '.$generation;
6973: }
6974: }
6975: $name=~s/^\s+//;
6976: $name=~s/\s+$//;
6977: $name=~s/\s+/ /g;
6978: return $name;
6979: }
6980:
6981: # ------------------------------------------------- Write to course preferences
6982:
6983: sub writecoursepref {
6984: my ($courseid,%prefs)=@_;
6985: $courseid=~s/^\///;
6986: $courseid=~s/\_/\//g;
6987: my ($cdomain,$cnum)=split(/\//,$courseid);
6988: my $chome=homeserver($cnum,$cdomain);
6989: if (($chome eq '') || ($chome eq 'no_host')) {
6990: return 'error: no such course';
6991: }
6992: my $cstring='';
6993: foreach my $pref (keys(%prefs)) {
6994: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
6995: }
6996: $cstring=~s/\&$//;
6997: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
6998: }
6999:
7000: # ---------------------------------------------------------- Make/modify course
7001:
7002: sub createcourse {
7003: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7004: $course_owner,$crstype,$cnum,$context,$category)=@_;
7005: $url=&declutter($url);
7006: my $cid='';
7007: if ($context eq 'requestcourses') {
7008: my $can_create = 0;
7009: my ($ownername,$ownerdom) = split(':',$course_owner);
7010: if ($udom eq $ownerdom) {
7011: if (&usertools_access($ownername,$ownerdom,$category,undef,
7012: $context)) {
7013: $can_create = 1;
7014: }
7015: } else {
7016: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7017: $category);
7018: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7019: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7020: if (@curr > 0) {
7021: my @options = qw(approval validate autolimit);
7022: my $optregex = join('|',@options);
7023: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7024: $can_create = 1;
7025: }
7026: }
7027: }
7028: }
7029: if ($can_create) {
7030: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7031: unless (&allowed('ccc',$udom)) {
7032: return 'refused';
7033: }
7034: }
7035: } else {
7036: return 'refused';
7037: }
7038: } elsif (!&allowed('ccc',$udom)) {
7039: return 'refused';
7040: }
7041: # --------------------------------------------------------------- Get Unique ID
7042: my $uname;
7043: if ($cnum =~ /^$match_courseid$/) {
7044: my $chome=&homeserver($cnum,$udom,'true');
7045: if (($chome eq '') || ($chome eq 'no_host')) {
7046: $uname = $cnum;
7047: } else {
7048: $uname = &generate_coursenum($udom,$crstype);
7049: }
7050: } else {
7051: $uname = &generate_coursenum($udom,$crstype);
7052: }
7053: return $uname if ($uname =~ /^error/);
7054: # -------------------------------------------------- Check supplied server name
7055: if (!defined($course_server)) {
7056: if (defined(&domain($udom,'primary'))) {
7057: $course_server = &domain($udom,'primary');
7058: } else {
7059: $course_server = $env{'user.home'};
7060: }
7061: }
7062: my %host_servers =
7063: &Apache::lonnet::get_servers($udom,'library');
7064: unless ($host_servers{$course_server}) {
7065: return 'error: invalid home server for course: '.$course_server;
7066: }
7067: # ------------------------------------------------------------- Make the course
7068: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
7069: $course_server);
7070: unless ($reply eq 'ok') { return 'error: '.$reply; }
7071: my $uhome=&homeserver($uname,$udom,'true');
7072: if (($uhome eq '') || ($uhome eq 'no_host')) {
7073: return 'error: no such course';
7074: }
7075: # ----------------------------------------------------------------- Course made
7076: # log existence
7077: my $now = time;
7078: my $newcourse = {
7079: $udom.'_'.$uname => {
7080: description => $description,
7081: inst_code => $inst_code,
7082: owner => $course_owner,
7083: type => $crstype,
7084: creator => $env{'user.name'}.':'.
7085: $env{'user.domain'},
7086: created => $now,
7087: context => $context,
7088: },
7089: };
7090: &courseidput($udom,$newcourse,$uhome,'notime');
7091: # set toplevel url
7092: my $topurl=$url;
7093: unless ($nonstandard) {
7094: # ------------------------------------------ For standard courses, make top url
7095: my $mapurl=&clutter($url);
7096: if ($mapurl eq '/res/') { $mapurl=''; }
7097: $env{'form.initmap'}=(<<ENDINITMAP);
7098: <map>
7099: <resource id="1" type="start"></resource>
7100: <resource id="2" src="$mapurl"></resource>
7101: <resource id="3" type="finish"></resource>
7102: <link index="1" from="1" to="2"></link>
7103: <link index="2" from="2" to="3"></link>
7104: </map>
7105: ENDINITMAP
7106: $topurl=&declutter(
7107: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
7108: );
7109: }
7110: # ----------------------------------------------------------- Write preferences
7111: &writecoursepref($udom.'_'.$uname,
7112: ('description' => $description,
7113: 'url' => $topurl,
7114: 'internal.creator' => $env{'user.name'}.':'.
7115: $env{'user.domain'},
7116: 'internal.created' => $now,
7117: 'internal.creationcontext' => $context)
7118: );
7119: return '/'.$udom.'/'.$uname;
7120: }
7121:
7122: # ------------------------------------------------------------------- Create ID
7123: sub generate_coursenum {
7124: my ($udom,$crstype) = @_;
7125: my $domdesc = &domain($udom);
7126: return 'error: invalid domain' if ($domdesc eq '');
7127: my $first;
7128: if ($crstype eq 'Community') {
7129: $first = '0';
7130: } else {
7131: $first = int(1+rand(9));
7132: }
7133: my $uname=$first.
7134: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7135: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7136: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7137: # ----------------------------------------------- Make sure that does not exist
7138: my $uhome=&homeserver($uname,$udom,'true');
7139: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7140: if ($crstype eq 'Community') {
7141: $first = '0';
7142: } else {
7143: $first = int(1+rand(9));
7144: }
7145: $uname=$first.
7146: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7147: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7148: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7149: $uhome=&homeserver($uname,$udom,'true');
7150: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7151: return 'error: unable to generate unique course-ID';
7152: }
7153: }
7154: return $uname;
7155: }
7156:
7157: sub is_course {
7158: my ($cdom,$cnum) = @_;
7159: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
7160: undef,'.');
7161: if (exists($courses{$cdom.'_'.$cnum})) {
7162: return 1;
7163: }
7164: return 0;
7165: }
7166:
7167: sub store_userdata {
7168: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
7169: my $result;
7170: if ($datakey ne '') {
7171: if (ref($storehash) eq 'HASH') {
7172: if ($udom eq '' || $uname eq '') {
7173: $udom = $env{'user.domain'};
7174: $uname = $env{'user.name'};
7175: }
7176: my $uhome=&homeserver($uname,$udom);
7177: if (($uhome eq '') || ($uhome eq 'no_host')) {
7178: $result = 'error: no_host';
7179: } else {
7180: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
7181: $storehash->{'host'} = $perlvar{'lonHostID'};
7182:
7183: my $namevalue='';
7184: foreach my $key (keys(%{$storehash})) {
7185: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7186: }
7187: $namevalue=~s/\&$//;
7188: $result = &reply("store:$env{'user.domain'}:$env{'user.name'}:".
7189: "$namespace:$datakey:$namevalue",$uhome);
7190: }
7191: } else {
7192: $result = 'error: data to store was not a hash reference';
7193: }
7194: } else {
7195: $result= 'error: invalid requestkey';
7196: }
7197: return $result;
7198: }
7199:
7200: # ---------------------------------------------------------- Assign Custom Role
7201:
7202: sub assigncustomrole {
7203: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
7204: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
7205: $end,$start,$deleteflag,$selfenroll,$context);
7206: }
7207:
7208: # ----------------------------------------------------------------- Revoke Role
7209:
7210: sub revokerole {
7211: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
7212: my $now=time;
7213: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
7214: }
7215:
7216: # ---------------------------------------------------------- Revoke Custom Role
7217:
7218: sub revokecustomrole {
7219: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
7220: my $now=time;
7221: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
7222: $deleteflag,$selfenroll,$context);
7223: }
7224:
7225: # ------------------------------------------------------------ Disk usage
7226: sub diskusage {
7227: my ($udom,$uname,$directorypath,$getpropath)=@_;
7228: $directorypath =~ s/\/$//;
7229: my $listing=&reply('du2:'.&escape($directorypath).':'
7230: .&escape($getpropath).':'.&escape($uname).':'
7231: .&escape($udom),homeserver($uname,$udom));
7232: if ($listing eq 'unknown_cmd') {
7233: if ($getpropath) {
7234: $directorypath = &propath($udom,$uname).'/'.$directorypath;
7235: }
7236: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
7237: }
7238: return $listing;
7239: }
7240:
7241: sub is_locked {
7242: my ($file_name, $domain, $user) = @_;
7243: my @check;
7244: my $is_locked;
7245: push @check, $file_name;
7246: my %locked = &get('file_permissions',\@check,
7247: $env{'user.domain'},$env{'user.name'});
7248: my ($tmp)=keys(%locked);
7249: if ($tmp=~/^error:/) { undef(%locked); }
7250:
7251: if (ref($locked{$file_name}) eq 'ARRAY') {
7252: $is_locked = 'false';
7253: foreach my $entry (@{$locked{$file_name}}) {
7254: if (ref($entry) eq 'ARRAY') {
7255: $is_locked = 'true';
7256: last;
7257: }
7258: }
7259: } else {
7260: $is_locked = 'false';
7261: }
7262: }
7263:
7264: sub declutter_portfile {
7265: my ($file) = @_;
7266: $file =~ s{^(/portfolio/|portfolio/)}{/};
7267: return $file;
7268: }
7269:
7270: # ------------------------------------------------------------- Mark as Read Only
7271:
7272: sub mark_as_readonly {
7273: my ($domain,$user,$files,$what) = @_;
7274: my %current_permissions = &dump('file_permissions',$domain,$user);
7275: my ($tmp)=keys(%current_permissions);
7276: if ($tmp=~/^error:/) { undef(%current_permissions); }
7277: foreach my $file (@{$files}) {
7278: $file = &declutter_portfile($file);
7279: push(@{$current_permissions{$file}},$what);
7280: }
7281: &put('file_permissions',\%current_permissions,$domain,$user);
7282: return;
7283: }
7284:
7285: # ------------------------------------------------------------Save Selected Files
7286:
7287: sub save_selected_files {
7288: my ($user, $path, @files) = @_;
7289: my $filename = $user."savedfiles";
7290: my @other_files = &files_not_in_path($user, $path);
7291: open (OUT, '>'.$tmpdir.$filename);
7292: foreach my $file (@files) {
7293: print (OUT $env{'form.currentpath'}.$file."\n");
7294: }
7295: foreach my $file (@other_files) {
7296: print (OUT $file."\n");
7297: }
7298: close (OUT);
7299: return 'ok';
7300: }
7301:
7302: sub clear_selected_files {
7303: my ($user) = @_;
7304: my $filename = $user."savedfiles";
7305: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7306: print (OUT undef);
7307: close (OUT);
7308: return ("ok");
7309: }
7310:
7311: sub files_in_path {
7312: my ($user, $path) = @_;
7313: my $filename = $user."savedfiles";
7314: my %return_files;
7315: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7316: while (my $line_in = <IN>) {
7317: chomp ($line_in);
7318: my @paths_and_file = split (m!/!, $line_in);
7319: my $file_part = pop (@paths_and_file);
7320: my $path_part = join ('/', @paths_and_file);
7321: $path_part.='/';
7322: my $path_and_file = $path_part.$file_part;
7323: if ($path_part eq $path) {
7324: $return_files{$file_part}= 'selected';
7325: }
7326: }
7327: close (IN);
7328: return (\%return_files);
7329: }
7330:
7331: # called in portfolio select mode, to show files selected NOT in current directory
7332: sub files_not_in_path {
7333: my ($user, $path) = @_;
7334: my $filename = $user."savedfiles";
7335: my @return_files;
7336: my $path_part;
7337: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7338: while (my $line = <IN>) {
7339: #ok, I know it's clunky, but I want it to work
7340: my @paths_and_file = split(m|/|, $line);
7341: my $file_part = pop(@paths_and_file);
7342: chomp($file_part);
7343: my $path_part = join('/', @paths_and_file);
7344: $path_part .= '/';
7345: my $path_and_file = $path_part.$file_part;
7346: if ($path_part ne $path) {
7347: push(@return_files, ($path_and_file));
7348: }
7349: }
7350: close(OUT);
7351: return (@return_files);
7352: }
7353:
7354: #----------------------------------------------Get portfolio file permissions
7355:
7356: sub get_portfile_permissions {
7357: my ($domain,$user) = @_;
7358: my %current_permissions = &dump('file_permissions',$domain,$user);
7359: my ($tmp)=keys(%current_permissions);
7360: if ($tmp=~/^error:/) { undef(%current_permissions); }
7361: return \%current_permissions;
7362: }
7363:
7364: #---------------------------------------------Get portfolio file access controls
7365:
7366: sub get_access_controls {
7367: my ($current_permissions,$group,$file) = @_;
7368: my %access;
7369: my $real_file = $file;
7370: $file =~ s/\.meta$//;
7371: if (defined($file)) {
7372: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
7373: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
7374: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
7375: }
7376: }
7377: } else {
7378: foreach my $key (keys(%{$current_permissions})) {
7379: if ($key =~ /\0accesscontrol$/) {
7380: if (defined($group)) {
7381: if ($key !~ m-^\Q$group\E/-) {
7382: next;
7383: }
7384: }
7385: my ($fullpath) = split(/\0/,$key);
7386: if (ref($$current_permissions{$key}) eq 'HASH') {
7387: foreach my $control (keys(%{$$current_permissions{$key}})) {
7388: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
7389: }
7390: }
7391: }
7392: }
7393: }
7394: return %access;
7395: }
7396:
7397: sub modify_access_controls {
7398: my ($file_name,$changes,$domain,$user)=@_;
7399: my ($outcome,$deloutcome);
7400: my %store_permissions;
7401: my %new_values;
7402: my %new_control;
7403: my %translation;
7404: my @deletions = ();
7405: my $now = time;
7406: if (exists($$changes{'activate'})) {
7407: if (ref($$changes{'activate'}) eq 'HASH') {
7408: my @newitems = sort(keys(%{$$changes{'activate'}}));
7409: my $numnew = scalar(@newitems);
7410: for (my $i=0; $i<$numnew; $i++) {
7411: my $newkey = $newitems[$i];
7412: my $newid = &Apache::loncommon::get_cgi_id();
7413: if ($newkey =~ /^\d+:/) {
7414: $newkey =~ s/^(\d+)/$newid/;
7415: $translation{$1} = $newid;
7416: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
7417: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
7418: $translation{$1} = $newid;
7419: }
7420: $new_values{$file_name."\0".$newkey} =
7421: $$changes{'activate'}{$newitems[$i]};
7422: $new_control{$newkey} = $now;
7423: }
7424: }
7425: }
7426: my %todelete;
7427: my %changed_items;
7428: foreach my $action ('delete','update') {
7429: if (exists($$changes{$action})) {
7430: if (ref($$changes{$action}) eq 'HASH') {
7431: foreach my $key (keys(%{$$changes{$action}})) {
7432: my ($itemnum) = ($key =~ /^([^:]+):/);
7433: if ($action eq 'delete') {
7434: $todelete{$itemnum} = 1;
7435: } else {
7436: $changed_items{$itemnum} = $key;
7437: }
7438: }
7439: }
7440: }
7441: }
7442: # get lock on access controls for file.
7443: my $lockhash = {
7444: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7445: ':'.$env{'user.domain'},
7446: };
7447: my $tries = 0;
7448: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7449:
7450: while (($gotlock ne 'ok') && $tries <3) {
7451: $tries ++;
7452: sleep 1;
7453: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7454: }
7455: if ($gotlock eq 'ok') {
7456: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7457: my ($tmp)=keys(%curr_permissions);
7458: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7459: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7460: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7461: if (ref($curr_controls) eq 'HASH') {
7462: foreach my $control_item (keys(%{$curr_controls})) {
7463: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7464: if (defined($todelete{$itemnum})) {
7465: push(@deletions,$file_name."\0".$control_item);
7466: } else {
7467: if (defined($changed_items{$itemnum})) {
7468: $new_control{$changed_items{$itemnum}} = $now;
7469: push(@deletions,$file_name."\0".$control_item);
7470: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7471: } else {
7472: $new_control{$control_item} = $$curr_controls{$control_item};
7473: }
7474: }
7475: }
7476: }
7477: }
7478: my ($group);
7479: if (&is_course($domain,$user)) {
7480: ($group,my $file) = split(/\//,$file_name,2);
7481: }
7482: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7483: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7484: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7485: # remove lock
7486: my @del_lock = ($file_name."\0".'locked_access_records');
7487: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7488: my $sqlresult =
7489: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7490: $group);
7491: } else {
7492: $outcome = "error: could not obtain lockfile\n";
7493: }
7494: return ($outcome,$deloutcome,\%new_values,\%translation);
7495: }
7496:
7497: sub make_public_indefinitely {
7498: my ($requrl) = @_;
7499: my $now = time;
7500: my $action = 'activate';
7501: my $aclnum = 0;
7502: if (&is_portfolio_url($requrl)) {
7503: my (undef,$udom,$unum,$file_name,$group) =
7504: &parse_portfolio_url($requrl);
7505: my $current_perms = &get_portfile_permissions($udom,$unum);
7506: my %access_controls = &get_access_controls($current_perms,
7507: $group,$file_name);
7508: foreach my $key (keys(%{$access_controls{$file_name}})) {
7509: my ($num,$scope,$end,$start) =
7510: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7511: if ($scope eq 'public') {
7512: if ($start <= $now && $end == 0) {
7513: $action = 'none';
7514: } else {
7515: $action = 'update';
7516: $aclnum = $num;
7517: }
7518: last;
7519: }
7520: }
7521: if ($action eq 'none') {
7522: return 'ok';
7523: } else {
7524: my %changes;
7525: my $newend = 0;
7526: my $newstart = $now;
7527: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7528: $changes{$action}{$newkey} = {
7529: type => 'public',
7530: time => {
7531: start => $newstart,
7532: end => $newend,
7533: },
7534: };
7535: my ($outcome,$deloutcome,$new_values,$translation) =
7536: &modify_access_controls($file_name,\%changes,$udom,$unum);
7537: return $outcome;
7538: }
7539: } else {
7540: return 'invalid';
7541: }
7542: }
7543:
7544: #------------------------------------------------------Get Marked as Read Only
7545:
7546: sub get_marked_as_readonly {
7547: my ($domain,$user,$what,$group) = @_;
7548: my $current_permissions = &get_portfile_permissions($domain,$user);
7549: my @readonly_files;
7550: my $cmp1=$what;
7551: if (ref($what)) { $cmp1=join('',@{$what}) };
7552: while (my ($file_name,$value) = each(%{$current_permissions})) {
7553: if (defined($group)) {
7554: if ($file_name !~ m-^\Q$group\E/-) {
7555: next;
7556: }
7557: }
7558: if (ref($value) eq "ARRAY"){
7559: foreach my $stored_what (@{$value}) {
7560: my $cmp2=$stored_what;
7561: if (ref($stored_what) eq 'ARRAY') {
7562: $cmp2=join('',@{$stored_what});
7563: }
7564: if ($cmp1 eq $cmp2) {
7565: push(@readonly_files, $file_name);
7566: last;
7567: } elsif (!defined($what)) {
7568: push(@readonly_files, $file_name);
7569: last;
7570: }
7571: }
7572: }
7573: }
7574: return @readonly_files;
7575: }
7576: #-----------------------------------------------------------Get Marked as Read Only Hash
7577:
7578: sub get_marked_as_readonly_hash {
7579: my ($current_permissions,$group,$what) = @_;
7580: my %readonly_files;
7581: while (my ($file_name,$value) = each(%{$current_permissions})) {
7582: if (defined($group)) {
7583: if ($file_name !~ m-^\Q$group\E/-) {
7584: next;
7585: }
7586: }
7587: if (ref($value) eq "ARRAY"){
7588: foreach my $stored_what (@{$value}) {
7589: if (ref($stored_what) eq 'ARRAY') {
7590: foreach my $lock_descriptor(@{$stored_what}) {
7591: if ($lock_descriptor eq 'graded') {
7592: $readonly_files{$file_name} = 'graded';
7593: } elsif ($lock_descriptor eq 'handback') {
7594: $readonly_files{$file_name} = 'handback';
7595: } else {
7596: if (!exists($readonly_files{$file_name})) {
7597: $readonly_files{$file_name} = 'locked';
7598: }
7599: }
7600: }
7601: }
7602: }
7603: }
7604: }
7605: return %readonly_files;
7606: }
7607: # ------------------------------------------------------------ Unmark as Read Only
7608:
7609: sub unmark_as_readonly {
7610: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7611: # for portfolio submissions, $what contains [$symb,$crsid]
7612: my ($domain,$user,$what,$file_name,$group) = @_;
7613: $file_name = &declutter_portfile($file_name);
7614: my $symb_crs = $what;
7615: if (ref($what)) { $symb_crs=join('',@$what); }
7616: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7617: my ($tmp)=keys(%current_permissions);
7618: if ($tmp=~/^error:/) { undef(%current_permissions); }
7619: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7620: foreach my $file (@readonly_files) {
7621: my $clean_file = &declutter_portfile($file);
7622: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7623: my $current_locks = $current_permissions{$file};
7624: my @new_locks;
7625: my @del_keys;
7626: if (ref($current_locks) eq "ARRAY"){
7627: foreach my $locker (@{$current_locks}) {
7628: my $compare=$locker;
7629: if (ref($locker) eq 'ARRAY') {
7630: $compare=join('',@{$locker});
7631: if ($compare ne $symb_crs) {
7632: push(@new_locks, $locker);
7633: }
7634: }
7635: }
7636: if (scalar(@new_locks) > 0) {
7637: $current_permissions{$file} = \@new_locks;
7638: } else {
7639: push(@del_keys, $file);
7640: &del('file_permissions',\@del_keys, $domain, $user);
7641: delete($current_permissions{$file});
7642: }
7643: }
7644: }
7645: &put('file_permissions',\%current_permissions,$domain,$user);
7646: return;
7647: }
7648:
7649: # ------------------------------------------------------------ Directory lister
7650:
7651: sub dirlist {
7652: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7653: $uri=~s/^\///;
7654: $uri=~s/\/$//;
7655: my ($udom, $uname);
7656: if ($getuserdir) {
7657: $udom = $userdomain;
7658: $uname = $username;
7659: } else {
7660: (undef,$udom,$uname)=split(/\//,$uri);
7661: if(defined($userdomain)) {
7662: $udom = $userdomain;
7663: }
7664: if(defined($username)) {
7665: $uname = $username;
7666: }
7667: }
7668: my ($dirRoot,$listing,@listing_results);
7669:
7670: $dirRoot = $perlvar{'lonDocRoot'};
7671: if (defined($getpropath)) {
7672: $dirRoot = &propath($udom,$uname);
7673: $dirRoot =~ s/\/$//;
7674: } elsif (defined($getuserdir)) {
7675: my $subdir=$uname.'__';
7676: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7677: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7678: ."/$udom/$subdir/$uname";
7679: } elsif (defined($alternateRoot)) {
7680: $dirRoot = $alternateRoot;
7681: }
7682:
7683: if($udom) {
7684: if($uname) {
7685: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7686: .$getuserdir.':'.&escape($dirRoot)
7687: .':'.&escape($uname).':'.&escape($udom),
7688: &homeserver($uname,$udom));
7689: if ($listing eq 'unknown_cmd') {
7690: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7691: &homeserver($uname,$udom));
7692: } else {
7693: @listing_results = map { &unescape($_); } split(/:/,$listing);
7694: }
7695: if ($listing eq 'unknown_cmd') {
7696: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7697: &homeserver($uname,$udom));
7698: @listing_results = split(/:/,$listing);
7699: } else {
7700: @listing_results = map { &unescape($_); } split(/:/,$listing);
7701: }
7702: return @listing_results;
7703: } elsif(!$alternateRoot) {
7704: my %allusers;
7705: my %servers = &get_servers($udom,'library');
7706: foreach my $tryserver (keys(%servers)) {
7707: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7708: &escape($udom),$tryserver);
7709: if ($listing eq 'unknown_cmd') {
7710: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7711: $udom, $tryserver);
7712: } else {
7713: @listing_results = map { &unescape($_); } split(/:/,$listing);
7714: }
7715: if ($listing eq 'unknown_cmd') {
7716: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7717: $udom, $tryserver);
7718: @listing_results = split(/:/,$listing);
7719: } else {
7720: @listing_results =
7721: map { &unescape($_); } split(/:/,$listing);
7722: }
7723: if ($listing_results[0] ne 'no_such_dir' &&
7724: $listing_results[0] ne 'empty' &&
7725: $listing_results[0] ne 'con_lost') {
7726: foreach my $line (@listing_results) {
7727: my ($entry) = split(/&/,$line,2);
7728: $allusers{$entry} = 1;
7729: }
7730: }
7731: }
7732: my $alluserstr='';
7733: foreach my $user (sort(keys(%allusers))) {
7734: $alluserstr.=$user.'&user:';
7735: }
7736: $alluserstr=~s/:$//;
7737: return split(/:/,$alluserstr);
7738: } else {
7739: return ('missing user name');
7740: }
7741: } elsif(!defined($getpropath)) {
7742: my @all_domains = sort(&all_domains());
7743: foreach my $domain (@all_domains) {
7744: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7745: }
7746: return @all_domains;
7747: } else {
7748: return ('missing domain');
7749: }
7750: }
7751:
7752: # --------------------------------------------- GetFileTimestamp
7753: # This function utilizes dirlist and returns the date stamp for
7754: # when it was last modified. It will also return an error of -1
7755: # if an error occurs
7756:
7757: sub GetFileTimestamp {
7758: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7759: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7760: $studentName = &LONCAPA::clean_username($studentName);
7761: my ($fileStat) =
7762: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7763: undef,$getuserdir);
7764: my @stats = split('&', $fileStat);
7765: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7766: # @stats contains first the filename, then the stat output
7767: return $stats[10]; # so this is 10 instead of 9.
7768: } else {
7769: return -1;
7770: }
7771: }
7772:
7773: sub stat_file {
7774: my ($uri) = @_;
7775: $uri = &clutter_with_no_wrapper($uri);
7776:
7777: my ($udom,$uname,$file);
7778: if ($uri =~ m-^/(uploaded|editupload)/-) {
7779: ($udom,$uname,$file) =
7780: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7781: $file = 'userfiles/'.$file;
7782: }
7783: if ($uri =~ m-^/res/-) {
7784: ($udom,$uname) =
7785: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7786: $file = $uri;
7787: }
7788:
7789: if (!$udom || !$uname || !$file) {
7790: # unable to handle the uri
7791: return ();
7792: }
7793: my $getpropath;
7794: if ($file =~ /^userfiles\//) {
7795: $getpropath = 1;
7796: }
7797: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7798: my @stats = split('&', $result);
7799:
7800: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7801: shift(@stats); #filename is first
7802: return @stats;
7803: }
7804: return ();
7805: }
7806:
7807: # -------------------------------------------------------- Value of a Condition
7808:
7809: # gets the value of a specific preevaluated condition
7810: # stored in the string $env{user.state.<cid>}
7811: # or looks up a condition reference in the bighash and if if hasn't
7812: # already been evaluated recurses into docondval to get the value of
7813: # the condition, then memoizing it to
7814: # $env{user.state.<cid>.<condition>}
7815: sub directcondval {
7816: my $number=shift;
7817: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7818: &Apache::lonuserstate::evalstate();
7819: }
7820: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7821: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7822: } elsif ($number =~ /^_/) {
7823: my $sub_condition;
7824: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7825: &GDBM_READER(),0640)) {
7826: $sub_condition=$bighash{'conditions'.$number};
7827: untie(%bighash);
7828: }
7829: my $value = &docondval($sub_condition);
7830: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7831: return $value;
7832: }
7833: if ($env{'user.state.'.$env{'request.course.id'}}) {
7834: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
7835: } else {
7836: return 2;
7837: }
7838: }
7839:
7840: # get the collection of conditions for this resource
7841: sub condval {
7842: my $condidx=shift;
7843: my $allpathcond='';
7844: foreach my $cond (split(/\|/,$condidx)) {
7845: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
7846: $allpathcond.=
7847: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
7848: }
7849: }
7850: $allpathcond=~s/\|$//;
7851: return &docondval($allpathcond);
7852: }
7853:
7854: #evaluates an expression of conditions
7855: sub docondval {
7856: my ($allpathcond) = @_;
7857: my $result=0;
7858: if ($env{'request.course.id'}
7859: && defined($allpathcond)) {
7860: my $operand='|';
7861: my @stack;
7862: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
7863: if ($chunk eq '(') {
7864: push @stack,($operand,$result);
7865: } elsif ($chunk eq ')') {
7866: my $before=pop @stack;
7867: if (pop @stack eq '&') {
7868: $result=$result>$before?$before:$result;
7869: } else {
7870: $result=$result>$before?$result:$before;
7871: }
7872: } elsif (($chunk eq '&') || ($chunk eq '|')) {
7873: $operand=$chunk;
7874: } else {
7875: my $new=directcondval($chunk);
7876: if ($operand eq '&') {
7877: $result=$result>$new?$new:$result;
7878: } else {
7879: $result=$result>$new?$result:$new;
7880: }
7881: }
7882: }
7883: }
7884: return $result;
7885: }
7886:
7887: # ---------------------------------------------------- Devalidate courseresdata
7888:
7889: sub devalidatecourseresdata {
7890: my ($coursenum,$coursedomain)=@_;
7891: my $hashid=$coursenum.':'.$coursedomain;
7892: &devalidate_cache_new('courseres',$hashid);
7893: }
7894:
7895:
7896: # --------------------------------------------------- Course Resourcedata Query
7897: #
7898: # Parameters:
7899: # $coursenum - Number of the course.
7900: # $coursedomain - Domain at which the course was created.
7901: # Returns:
7902: # A hash of the course parameters along (I think) with timestamps
7903: # and version info.
7904:
7905: sub get_courseresdata {
7906: my ($coursenum,$coursedomain)=@_;
7907: my $coursehom=&homeserver($coursenum,$coursedomain);
7908: my $hashid=$coursenum.':'.$coursedomain;
7909: my ($result,$cached)=&is_cached_new('courseres',$hashid);
7910: my %dumpreply;
7911: unless (defined($cached)) {
7912: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
7913: $result=\%dumpreply;
7914: my ($tmp) = keys(%dumpreply);
7915: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
7916: &do_cache_new('courseres',$hashid,$result,600);
7917: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
7918: return $tmp;
7919: } elsif ($tmp =~ /^(error)/) {
7920: $result=undef;
7921: &do_cache_new('courseres',$hashid,$result,600);
7922: }
7923: }
7924: return $result;
7925: }
7926:
7927: sub devalidateuserresdata {
7928: my ($uname,$udom)=@_;
7929: my $hashid="$udom:$uname";
7930: &devalidate_cache_new('userres',$hashid);
7931: }
7932:
7933: sub get_userresdata {
7934: my ($uname,$udom)=@_;
7935: #most student don\'t have any data set, check if there is some data
7936: if (&EXT_cache_status($udom,$uname)) { return undef; }
7937:
7938: my $hashid="$udom:$uname";
7939: my ($result,$cached)=&is_cached_new('userres',$hashid);
7940: if (!defined($cached)) {
7941: my %resourcedata=&dump('resourcedata',$udom,$uname);
7942: $result=\%resourcedata;
7943: &do_cache_new('userres',$hashid,$result,600);
7944: }
7945: my ($tmp)=keys(%$result);
7946: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
7947: return $result;
7948: }
7949: #error 2 occurs when the .db doesn't exist
7950: if ($tmp!~/error: 2 /) {
7951: &logthis("<font color=\"blue\">WARNING:".
7952: " Trying to get resource data for ".
7953: $uname." at ".$udom.": ".
7954: $tmp."</font>");
7955: } elsif ($tmp=~/error: 2 /) {
7956: #&EXT_cache_set($udom,$uname);
7957: &do_cache_new('userres',$hashid,undef,600);
7958: undef($tmp); # not really an error so don't send it back
7959: }
7960: return $tmp;
7961: }
7962: #----------------------------------------------- resdata - return resource data
7963: # Purpose:
7964: # Return resource data for either users or for a course.
7965: # Parameters:
7966: # $name - Course/user name.
7967: # $domain - Name of the domain the user/course is registered on.
7968: # $type - Type of thing $name is (must be 'course' or 'user'
7969: # @which - Array of names of resources desired.
7970: # Returns:
7971: # The value of the first reasource in @which that is found in the
7972: # resource hash.
7973: # Exceptional Conditions:
7974: # If the $type passed in is not valid (not the string 'course' or
7975: # 'user', an undefined reference is returned.
7976: # If none of the resources are found, an undef is returned
7977: sub resdata {
7978: my ($name,$domain,$type,@which)=@_;
7979: my $result;
7980: if ($type eq 'course') {
7981: $result=&get_courseresdata($name,$domain);
7982: } elsif ($type eq 'user') {
7983: $result=&get_userresdata($name,$domain);
7984: }
7985: if (!ref($result)) { return $result; }
7986: foreach my $item (@which) {
7987: if (defined($result->{$item->[0]})) {
7988: return [$result->{$item->[0]},$item->[1]];
7989: }
7990: }
7991: return undef;
7992: }
7993:
7994: #
7995: # EXT resource caching routines
7996: #
7997:
7998: sub clear_EXT_cache_status {
7999: &delenv('cache.EXT.');
8000: }
8001:
8002: sub EXT_cache_status {
8003: my ($target_domain,$target_user) = @_;
8004: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8005: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8006: # We know already the user has no data
8007: return 1;
8008: } else {
8009: return 0;
8010: }
8011: }
8012:
8013: sub EXT_cache_set {
8014: my ($target_domain,$target_user) = @_;
8015: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8016: #&appenv({$cachename => time});
8017: }
8018:
8019: # --------------------------------------------------------- Value of a Variable
8020: sub EXT {
8021:
8022: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8023: unless ($varname) { return ''; }
8024: #get real user name/domain, courseid and symb
8025: my $courseid;
8026: my $publicuser;
8027: if ($symbparm) {
8028: $symbparm=&get_symb_from_alias($symbparm);
8029: }
8030: if (!($uname && $udom)) {
8031: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8032: if (!$symbparm) { $symbparm=$cursymb; }
8033: } else {
8034: $courseid=$env{'request.course.id'};
8035: }
8036: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8037: my $rest;
8038: if (defined($therest[0])) {
8039: $rest=join('.',@therest);
8040: } else {
8041: $rest='';
8042: }
8043:
8044: my $qualifierrest=$qualifier;
8045: if ($rest) { $qualifierrest.='.'.$rest; }
8046: my $spacequalifierrest=$space;
8047: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
8048: if ($realm eq 'user') {
8049: # --------------------------------------------------------------- user.resource
8050: if ($space eq 'resource') {
8051: if ( (defined($Apache::lonhomework::parsing_a_problem)
8052: || defined($Apache::lonhomework::parsing_a_task))
8053: &&
8054: ($symbparm eq &symbread()) ) {
8055: # if we are in the middle of processing the resource the
8056: # get the value we are planning on committing
8057: if (defined($Apache::lonhomework::results{$qualifierrest})) {
8058: return $Apache::lonhomework::results{$qualifierrest};
8059: } else {
8060: return $Apache::lonhomework::history{$qualifierrest};
8061: }
8062: } else {
8063: my %restored;
8064: if ($publicuser || $env{'request.state'} eq 'construct') {
8065: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
8066: } else {
8067: %restored=&restore($symbparm,$courseid,$udom,$uname);
8068: }
8069: return $restored{$qualifierrest};
8070: }
8071: # ----------------------------------------------------------------- user.access
8072: } elsif ($space eq 'access') {
8073: # FIXME - not supporting calls for a specific user
8074: return &allowed($qualifier,$rest);
8075: # ------------------------------------------ user.preferences, user.environment
8076: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
8077: if (($uname eq $env{'user.name'}) &&
8078: ($udom eq $env{'user.domain'})) {
8079: return $env{join('.',('environment',$qualifierrest))};
8080: } else {
8081: my %returnhash;
8082: if (!$publicuser) {
8083: %returnhash=&userenvironment($udom,$uname,
8084: $qualifierrest);
8085: }
8086: return $returnhash{$qualifierrest};
8087: }
8088: # ----------------------------------------------------------------- user.course
8089: } elsif ($space eq 'course') {
8090: # FIXME - not supporting calls for a specific user
8091: return $env{join('.',('request.course',$qualifier))};
8092: # ------------------------------------------------------------------- user.role
8093: } elsif ($space eq 'role') {
8094: # FIXME - not supporting calls for a specific user
8095: my ($role,$where)=split(/\./,$env{'request.role'});
8096: if ($qualifier eq 'value') {
8097: return $role;
8098: } elsif ($qualifier eq 'extent') {
8099: return $where;
8100: }
8101: # ----------------------------------------------------------------- user.domain
8102: } elsif ($space eq 'domain') {
8103: return $udom;
8104: # ------------------------------------------------------------------- user.name
8105: } elsif ($space eq 'name') {
8106: return $uname;
8107: # ---------------------------------------------------- Any other user namespace
8108: } else {
8109: my %reply;
8110: if (!$publicuser) {
8111: %reply=&get($space,[$qualifierrest],$udom,$uname);
8112: }
8113: return $reply{$qualifierrest};
8114: }
8115: } elsif ($realm eq 'query') {
8116: # ---------------------------------------------- pull stuff out of query string
8117: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
8118: [$spacequalifierrest]);
8119: return $env{'form.'.$spacequalifierrest};
8120: } elsif ($realm eq 'request') {
8121: # ------------------------------------------------------------- request.browser
8122: if ($space eq 'browser') {
8123: if ($qualifier eq 'textremote') {
8124: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
8125: return 1;
8126: } else {
8127: return 0;
8128: }
8129: } else {
8130: return $env{'browser.'.$qualifier};
8131: }
8132: # ------------------------------------------------------------ request.filename
8133: } else {
8134: return $env{'request.'.$spacequalifierrest};
8135: }
8136: } elsif ($realm eq 'course') {
8137: # ---------------------------------------------------------- course.description
8138: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
8139: } elsif ($realm eq 'resource') {
8140:
8141: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
8142: if (!$symbparm) { $symbparm=&symbread(); }
8143: }
8144:
8145: if ($space eq 'title') {
8146: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
8147: return &gettitle($symbparm);
8148: }
8149:
8150: if ($space eq 'map') {
8151: my ($map) = &decode_symb($symbparm);
8152: return &symbread($map);
8153: }
8154: if ($space eq 'filename') {
8155: if ($symbparm) {
8156: return &clutter((&decode_symb($symbparm))[2]);
8157: }
8158: return &hreflocation('',$env{'request.filename'});
8159: }
8160:
8161: my ($section, $group, @groups);
8162: my ($courselevelm,$courselevel);
8163: if ($symbparm && defined($courseid) &&
8164: $courseid eq $env{'request.course.id'}) {
8165:
8166: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
8167:
8168: # ----------------------------------------------------- Cascading lookup scheme
8169: my $symbp=$symbparm;
8170: my $mapp=&deversion((&decode_symb($symbp))[0]);
8171:
8172: my $symbparm=$symbp.'.'.$spacequalifierrest;
8173: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
8174:
8175: if (($env{'user.name'} eq $uname) &&
8176: ($env{'user.domain'} eq $udom)) {
8177: $section=$env{'request.course.sec'};
8178: @groups = split(/:/,$env{'request.course.groups'});
8179: @groups=&sort_course_groups($courseid,@groups);
8180: } else {
8181: if (! defined($usection)) {
8182: $section=&getsection($udom,$uname,$courseid);
8183: } else {
8184: $section = $usection;
8185: }
8186: @groups = &get_users_groups($udom,$uname,$courseid);
8187: }
8188:
8189: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
8190: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
8191: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
8192:
8193: $courselevel=$courseid.'.'.$spacequalifierrest;
8194: my $courselevelr=$courseid.'.'.$symbparm;
8195: $courselevelm=$courseid.'.'.$mapparm;
8196:
8197: # ----------------------------------------------------------- first, check user
8198:
8199: my $userreply=&resdata($uname,$udom,'user',
8200: ([$courselevelr,'resource'],
8201: [$courselevelm,'map' ],
8202: [$courselevel, 'course' ]));
8203: if (defined($userreply)) { return &get_reply($userreply); }
8204:
8205: # ------------------------------------------------ second, check some of course
8206: my $coursereply;
8207: if (@groups > 0) {
8208: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
8209: $mapparm,$spacequalifierrest);
8210: if (defined($coursereply)) { return &get_reply($coursereply); }
8211: }
8212:
8213: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8214: $env{'course.'.$courseid.'.domain'},
8215: 'course',
8216: ([$seclevelr, 'resource'],
8217: [$seclevelm, 'map' ],
8218: [$seclevel, 'course' ],
8219: [$courselevelr,'resource']));
8220: if (defined($coursereply)) { return &get_reply($coursereply); }
8221:
8222: # ------------------------------------------------------ third, check map parms
8223: my %parmhash=();
8224: my $thisparm='';
8225: if (tie(%parmhash,'GDBM_File',
8226: $env{'request.course.fn'}.'_parms.db',
8227: &GDBM_READER(),0640)) {
8228: $thisparm=$parmhash{$symbparm};
8229: untie(%parmhash);
8230: }
8231: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
8232: }
8233: # ------------------------------------------ fourth, look in resource metadata
8234:
8235: $spacequalifierrest=~s/\./\_/;
8236: my $filename;
8237: if (!$symbparm) { $symbparm=&symbread(); }
8238: if ($symbparm) {
8239: $filename=(&decode_symb($symbparm))[2];
8240: } else {
8241: $filename=$env{'request.filename'};
8242: }
8243: my $metadata=&metadata($filename,$spacequalifierrest);
8244: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8245: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
8246: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8247:
8248: # ---------------------------------------------- fourth, look in rest of course
8249: if ($symbparm && defined($courseid) &&
8250: $courseid eq $env{'request.course.id'}) {
8251: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8252: $env{'course.'.$courseid.'.domain'},
8253: 'course',
8254: ([$courselevelm,'map' ],
8255: [$courselevel, 'course']));
8256: if (defined($coursereply)) { return &get_reply($coursereply); }
8257: }
8258: # ------------------------------------------------------------------ Cascade up
8259: unless ($space eq '0') {
8260: my @parts=split(/_/,$space);
8261: my $id=pop(@parts);
8262: my $part=join('_',@parts);
8263: if ($part eq '') { $part='0'; }
8264: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
8265: $symbparm,$udom,$uname,$section,1);
8266: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
8267: }
8268: if ($recurse) { return undef; }
8269: my $pack_def=&packages_tab_default($filename,$varname);
8270: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
8271: # ---------------------------------------------------- Any other user namespace
8272: } elsif ($realm eq 'environment') {
8273: # ----------------------------------------------------------------- environment
8274: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
8275: return $env{'environment.'.$spacequalifierrest};
8276: } else {
8277: if ($uname eq 'anonymous' && $udom eq '') {
8278: return '';
8279: }
8280: my %returnhash=&userenvironment($udom,$uname,
8281: $spacequalifierrest);
8282: return $returnhash{$spacequalifierrest};
8283: }
8284: } elsif ($realm eq 'system') {
8285: # ----------------------------------------------------------------- system.time
8286: if ($space eq 'time') {
8287: return time;
8288: }
8289: } elsif ($realm eq 'server') {
8290: # ----------------------------------------------------------------- system.time
8291: if ($space eq 'name') {
8292: return $ENV{'SERVER_NAME'};
8293: }
8294: }
8295: return '';
8296: }
8297:
8298: sub get_reply {
8299: my ($reply_value) = @_;
8300: if (ref($reply_value) eq 'ARRAY') {
8301: if (wantarray) {
8302: return @$reply_value;
8303: }
8304: return $reply_value->[0];
8305: } else {
8306: return $reply_value;
8307: }
8308: }
8309:
8310: sub check_group_parms {
8311: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
8312: my @groupitems = ();
8313: my $resultitem;
8314: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
8315: foreach my $group (@{$groups}) {
8316: foreach my $level (@levels) {
8317: my $item = $courseid.'.['.$group.'].'.$level->[0];
8318: push(@groupitems,[$item,$level->[1]]);
8319: }
8320: }
8321: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
8322: $env{'course.'.$courseid.'.domain'},
8323: 'course',@groupitems);
8324: return $coursereply;
8325: }
8326:
8327: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
8328: my ($courseid,@groups) = @_;
8329: @groups = sort(@groups);
8330: return @groups;
8331: }
8332:
8333: sub packages_tab_default {
8334: my ($uri,$varname)=@_;
8335: my (undef,$part,$name)=split(/\./,$varname);
8336:
8337: my (@extension,@specifics,$do_default);
8338: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
8339: my ($pack_type,$pack_part)=split(/_/,$package,2);
8340: if ($pack_type eq 'default') {
8341: $do_default=1;
8342: } elsif ($pack_type eq 'extension') {
8343: push(@extension,[$package,$pack_type,$pack_part]);
8344: } elsif ($pack_part eq $part || $pack_type eq 'part') {
8345: # only look at packages defaults for packages that this id is
8346: push(@specifics,[$package,$pack_type,$pack_part]);
8347: }
8348: }
8349: # first look for a package that matches the requested part id
8350: foreach my $package (@specifics) {
8351: my (undef,$pack_type,$pack_part)=@{$package};
8352: next if ($pack_part ne $part);
8353: if (defined($packagetab{"$pack_type&$name&default"})) {
8354: return $packagetab{"$pack_type&$name&default"};
8355: }
8356: }
8357: # look for any possible matching non extension_ package
8358: foreach my $package (@specifics) {
8359: my (undef,$pack_type,$pack_part)=@{$package};
8360: if (defined($packagetab{"$pack_type&$name&default"})) {
8361: return $packagetab{"$pack_type&$name&default"};
8362: }
8363: if ($pack_type eq 'part') { $pack_part='0'; }
8364: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
8365: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
8366: }
8367: }
8368: # look for any posible extension_ match
8369: foreach my $package (@extension) {
8370: my ($package,$pack_type)=@{$package};
8371: if (defined($packagetab{"$pack_type&$name&default"})) {
8372: return $packagetab{"$pack_type&$name&default"};
8373: }
8374: if (defined($packagetab{$package."&$name&default"})) {
8375: return $packagetab{$package."&$name&default"};
8376: }
8377: }
8378: # look for a global default setting
8379: if ($do_default && defined($packagetab{"default&$name&default"})) {
8380: return $packagetab{"default&$name&default"};
8381: }
8382: return undef;
8383: }
8384:
8385: sub add_prefix_and_part {
8386: my ($prefix,$part)=@_;
8387: my $keyroot;
8388: if (defined($prefix) && $prefix !~ /^__/) {
8389: # prefix that has a part already
8390: $keyroot=$prefix;
8391: } elsif (defined($prefix)) {
8392: # prefix that is missing a part
8393: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
8394: } else {
8395: # no prefix at all
8396: if (defined($part)) { $keyroot='_'.$part; }
8397: }
8398: return $keyroot;
8399: }
8400:
8401: # ---------------------------------------------------------------- Get metadata
8402:
8403: my %metaentry;
8404: my %importedpartids;
8405: sub metadata {
8406: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
8407: $uri=&declutter($uri);
8408: # if it is a non metadata possible uri return quickly
8409: if (($uri eq '') ||
8410: (($uri =~ m|^/*adm/|) &&
8411: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
8412: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^\*uploaded\/.+\.sequence$/) ) {
8413: return undef;
8414: }
8415: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
8416: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
8417: return undef;
8418: }
8419: my $filename=$uri;
8420: $uri=~s/\.meta$//;
8421: #
8422: # Is the metadata already cached?
8423: # Look at timestamp of caching
8424: # Everything is cached by the main uri, libraries are never directly cached
8425: #
8426: if (!defined($liburi)) {
8427: my ($result,$cached)=&is_cached_new('meta',$uri);
8428: if (defined($cached)) { return $result->{':'.$what}; }
8429: }
8430: {
8431: # Imported parts would go here
8432: my %importedids=();
8433: my @origfileimportpartids=();
8434: my $importedparts=0;
8435: #
8436: # Is this a recursive call for a library?
8437: #
8438: # if (! exists($metacache{$uri})) {
8439: # $metacache{$uri}={};
8440: # }
8441: my $cachetime = 60*60;
8442: if ($liburi) {
8443: $liburi=&declutter($liburi);
8444: $filename=$liburi;
8445: } else {
8446: &devalidate_cache_new('meta',$uri);
8447: undef(%metaentry);
8448: }
8449: my %metathesekeys=();
8450: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8451: my $metastring;
8452: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8453: my $which = &hreflocation('','/'.($liburi || $uri));
8454: $metastring =
8455: &Apache::lonnet::ssi_body($which,
8456: ('grade_target' => 'meta'));
8457: $cachetime = 1; # only want this cached in the child not long term
8458: } elsif ($uri !~ m -^(editupload)/-) {
8459: my $file=&filelocation('',&clutter($filename));
8460: #push(@{$metaentry{$uri.'.file'}},$file);
8461: $metastring=&getfile($file);
8462: }
8463: my $parser=HTML::LCParser->new(\$metastring);
8464: my $token;
8465: undef %metathesekeys;
8466: while ($token=$parser->get_token) {
8467: if ($token->[0] eq 'S') {
8468: if (defined($token->[2]->{'package'})) {
8469: #
8470: # This is a package - get package info
8471: #
8472: my $package=$token->[2]->{'package'};
8473: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8474: if (defined($token->[2]->{'id'})) {
8475: $keyroot.='_'.$token->[2]->{'id'};
8476: }
8477: if ($metaentry{':packages'}) {
8478: $metaentry{':packages'}.=','.$package.$keyroot;
8479: } else {
8480: $metaentry{':packages'}=$package.$keyroot;
8481: }
8482: foreach my $pack_entry (keys(%packagetab)) {
8483: my $part=$keyroot;
8484: $part=~s/^\_//;
8485: if ($pack_entry=~/^\Q$package\E\&/ ||
8486: $pack_entry=~/^\Q$package\E_0\&/) {
8487: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8488: # ignore package.tab specified default values
8489: # here &package_tab_default() will fetch those
8490: if ($subp eq 'default') { next; }
8491: my $value=$packagetab{$pack_entry};
8492: my $unikey;
8493: if ($pack =~ /_0$/) {
8494: $unikey='parameter_0_'.$name;
8495: $part=0;
8496: } else {
8497: $unikey='parameter'.$keyroot.'_'.$name;
8498: }
8499: if ($subp eq 'display') {
8500: $value.=' [Part: '.$part.']';
8501: }
8502: $metaentry{':'.$unikey.'.part'}=$part;
8503: $metathesekeys{$unikey}=1;
8504: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8505: $metaentry{':'.$unikey.'.'.$subp}=$value;
8506: }
8507: if (defined($metaentry{':'.$unikey.'.default'})) {
8508: $metaentry{':'.$unikey}=
8509: $metaentry{':'.$unikey.'.default'};
8510: }
8511: }
8512: }
8513: } else {
8514: #
8515: # This is not a package - some other kind of start tag
8516: #
8517: my $entry=$token->[1];
8518: my $unikey='';
8519:
8520: if ($entry eq 'import') {
8521: #
8522: # Importing a library here
8523: #
8524: my $location=$parser->get_text('/import');
8525: my $dir=$filename;
8526: $dir=~s|[^/]*$||;
8527: $location=&filelocation($dir,$location);
8528:
8529: my $importmode=$token->[2]->{'importmode'};
8530: if ($importmode eq 'problem') {
8531: # Import as problem/response
8532: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8533: } elsif ($importmode eq 'part') {
8534: # Import as part(s)
8535: $importedparts=1;
8536: # We need to get the original file and the imported file to get the part order correct
8537: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
8538: # Load and inspect original file
8539: if ($#origfileimportpartids<0) {
8540: undef(%importedpartids);
8541: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
8542: my $origfile=&getfile($origfilelocation);
8543: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8544: }
8545:
8546: # Load and inspect imported file
8547: my $impfile=&getfile($location);
8548: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8549: if ($#impfilepartids>=0) {
8550: # This problem had parts
8551: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
8552: } else {
8553: # Importing by turning a single problem into a problem part
8554: # It gets the import-tags ID as part-ID
8555: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
8556: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
8557: }
8558: } else {
8559: # Normal import
8560: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8561: if (defined($token->[2]->{'id'})) {
8562: $unikey.='_'.$token->[2]->{'id'};
8563: }
8564: }
8565:
8566: if ($depthcount<20) {
8567: my $metadata =
8568: &metadata($uri,'keys', $location,$unikey,
8569: $depthcount+1);
8570: foreach my $meta (split(',',$metadata)) {
8571: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8572: $metathesekeys{$meta}=1;
8573: }
8574:
8575: }
8576: } else {
8577: #
8578: # Not importing, some other kind of non-package, non-library start tag
8579: #
8580: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
8581: if (defined($token->[2]->{'id'})) {
8582: $unikey.='_'.$token->[2]->{'id'};
8583: }
8584: if (defined($token->[2]->{'name'})) {
8585: $unikey.='_'.$token->[2]->{'name'};
8586: }
8587: $metathesekeys{$unikey}=1;
8588: foreach my $param (@{$token->[3]}) {
8589: $metaentry{':'.$unikey.'.'.$param} =
8590: $token->[2]->{$param};
8591: }
8592: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8593: my $default=$metaentry{':'.$unikey.'.default'};
8594: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8595: # only ws inside the tag, and not in default, so use default
8596: # as value
8597: $metaentry{':'.$unikey}=$default;
8598: } elsif ( $internaltext =~ /\S/ ) {
8599: # something interesting inside the tag
8600: $metaentry{':'.$unikey}=$internaltext;
8601: } else {
8602: # no interesting values, don't set a default
8603: }
8604: # end of not-a-package not-a-library import
8605: }
8606: # end of not-a-package start tag
8607: }
8608: # the next is the end of "start tag"
8609: }
8610: }
8611: my ($extension) = ($uri =~ /\.(\w+)$/);
8612: $extension = lc($extension);
8613: if ($extension eq 'htm') { $extension='html'; }
8614:
8615: foreach my $key (keys(%packagetab)) {
8616: #no specific packages #how's our extension
8617: if ($key!~/^extension_\Q$extension\E&/) { next; }
8618: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8619: \%metathesekeys);
8620: }
8621:
8622: if (!exists($metaentry{':packages'})
8623: || $packagetab{"import_defaults&extension_$extension"}) {
8624: foreach my $key (keys(%packagetab)) {
8625: #no specific packages well let's get default then
8626: if ($key!~/^default&/) { next; }
8627: &metadata_create_package_def($uri,$key,'default',
8628: \%metathesekeys);
8629: }
8630: }
8631: # are there custom rights to evaluate
8632: if ($metaentry{':copyright'} eq 'custom') {
8633:
8634: #
8635: # Importing a rights file here
8636: #
8637: unless ($depthcount) {
8638: my $location=$metaentry{':customdistributionfile'};
8639: my $dir=$filename;
8640: $dir=~s|[^/]*$||;
8641: $location=&filelocation($dir,$location);
8642: my $rights_metadata =
8643: &metadata($uri,'keys',$location,'_rights',
8644: $depthcount+1);
8645: foreach my $rights (split(',',$rights_metadata)) {
8646: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8647: $metathesekeys{$rights}=1;
8648: }
8649: }
8650: }
8651: # uniqifiy package listing
8652: my %seen;
8653: my @uniq_packages =
8654: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8655: $metaentry{':packages'} = join(',',@uniq_packages);
8656:
8657: if ($importedparts) {
8658: # We had imported parts and need to rebuild partorder
8659: $metaentry{':partorder'}='';
8660: $metathesekeys{'partorder'}=1;
8661: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
8662: if ($origfileimportpartids[$index] eq 'part') {
8663: # original part, part of the problem
8664: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
8665: } else {
8666: # we have imported parts at this position
8667: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
8668: }
8669: }
8670: $metaentry{':partorder'}=~s/^\,//;
8671: }
8672:
8673: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8674: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8675: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8676: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8677: # this is the end of "was not already recently cached
8678: }
8679: return $metaentry{':'.$what};
8680: }
8681:
8682: sub metadata_create_package_def {
8683: my ($uri,$key,$package,$metathesekeys)=@_;
8684: my ($pack,$name,$subp)=split(/\&/,$key);
8685: if ($subp eq 'default') { next; }
8686:
8687: if (defined($metaentry{':packages'})) {
8688: $metaentry{':packages'}.=','.$package;
8689: } else {
8690: $metaentry{':packages'}=$package;
8691: }
8692: my $value=$packagetab{$key};
8693: my $unikey;
8694: $unikey='parameter_0_'.$name;
8695: $metaentry{':'.$unikey.'.part'}=0;
8696: $$metathesekeys{$unikey}=1;
8697: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8698: $metaentry{':'.$unikey.'.'.$subp}=$value;
8699: }
8700: if (defined($metaentry{':'.$unikey.'.default'})) {
8701: $metaentry{':'.$unikey}=
8702: $metaentry{':'.$unikey.'.default'};
8703: }
8704: }
8705:
8706: sub metadata_generate_part0 {
8707: my ($metadata,$metacache,$uri) = @_;
8708: my %allnames;
8709: foreach my $metakey (keys(%$metadata)) {
8710: if ($metakey=~/^parameter\_(.*)/) {
8711: my $part=$$metacache{':'.$metakey.'.part'};
8712: my $name=$$metacache{':'.$metakey.'.name'};
8713: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8714: $allnames{$name}=$part;
8715: }
8716: }
8717: }
8718: foreach my $name (keys(%allnames)) {
8719: $$metadata{"parameter_0_$name"}=1;
8720: my $key=":parameter_0_$name";
8721: $$metacache{"$key.part"}='0';
8722: $$metacache{"$key.name"}=$name;
8723: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8724: $allnames{$name}.'_'.$name.
8725: '.type'};
8726: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8727: '.display'};
8728: my $expr='[Part: '.$allnames{$name}.']';
8729: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8730: $$metacache{"$key.display"}=$olddis;
8731: }
8732: }
8733:
8734: # ------------------------------------------------------ Devalidate title cache
8735:
8736: sub devalidate_title_cache {
8737: my ($url)=@_;
8738: if (!$env{'request.course.id'}) { return; }
8739: my $symb=&symbread($url);
8740: if (!$symb) { return; }
8741: my $key=$env{'request.course.id'}."\0".$symb;
8742: &devalidate_cache_new('title',$key);
8743: }
8744:
8745: # ------------------------------------------------- Get the title of a course
8746:
8747: sub current_course_title {
8748: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8749: }
8750: # ------------------------------------------------- Get the title of a resource
8751:
8752: sub gettitle {
8753: my $urlsymb=shift;
8754: my $symb=&symbread($urlsymb);
8755: if ($symb) {
8756: my $key=$env{'request.course.id'}."\0".$symb;
8757: my ($result,$cached)=&is_cached_new('title',$key);
8758: if (defined($cached)) {
8759: return $result;
8760: }
8761: my ($map,$resid,$url)=&decode_symb($symb);
8762: my $title='';
8763: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8764: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8765: } else {
8766: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8767: &GDBM_READER(),0640)) {
8768: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8769: $title=$bighash{'title_'.$mapid.'.'.$resid};
8770: untie(%bighash);
8771: }
8772: }
8773: $title=~s/\&colon\;/\:/gs;
8774: if ($title) {
8775: return &do_cache_new('title',$key,$title,600);
8776: }
8777: $urlsymb=$url;
8778: }
8779: my $title=&metadata($urlsymb,'title');
8780: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8781: return $title;
8782: }
8783:
8784: sub get_slot {
8785: my ($which,$cnum,$cdom)=@_;
8786: if (!$cnum || !$cdom) {
8787: (undef,my $courseid)=&whichuser();
8788: $cdom=$env{'course.'.$courseid.'.domain'};
8789: $cnum=$env{'course.'.$courseid.'.num'};
8790: }
8791: my $key=join("\0",'slots',$cdom,$cnum,$which);
8792: my %slotinfo;
8793: if (exists($remembered{$key})) {
8794: $slotinfo{$which} = $remembered{$key};
8795: } else {
8796: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8797: &Apache::lonhomework::showhash(%slotinfo);
8798: my ($tmp)=keys(%slotinfo);
8799: if ($tmp=~/^error:/) { return (); }
8800: $remembered{$key} = $slotinfo{$which};
8801: }
8802: if (ref($slotinfo{$which}) eq 'HASH') {
8803: return %{$slotinfo{$which}};
8804: }
8805: return $slotinfo{$which};
8806: }
8807: # ------------------------------------------------- Update symbolic store links
8808:
8809: sub symblist {
8810: my ($mapname,%newhash)=@_;
8811: $mapname=&deversion(&declutter($mapname));
8812: my %hash;
8813: if (($env{'request.course.fn'}) && (%newhash)) {
8814: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8815: &GDBM_WRCREAT(),0640)) {
8816: foreach my $url (keys(%newhash)) {
8817: next if ($url eq 'last_known'
8818: && $env{'form.no_update_last_known'});
8819: $hash{declutter($url)}=&encode_symb($mapname,
8820: $newhash{$url}->[1],
8821: $newhash{$url}->[0]);
8822: }
8823: if (untie(%hash)) {
8824: return 'ok';
8825: }
8826: }
8827: }
8828: return 'error';
8829: }
8830:
8831: # --------------------------------------------------------------- Verify a symb
8832:
8833: sub symbverify {
8834: my ($symb,$thisurl)=@_;
8835: my $thisfn=$thisurl;
8836: $thisfn=&declutter($thisfn);
8837: # direct jump to resource in page or to a sequence - will construct own symbs
8838: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
8839: # check URL part
8840: my ($map,$resid,$url)=&decode_symb($symb);
8841:
8842: unless ($url eq $thisfn) { return 0; }
8843:
8844: $symb=&symbclean($symb);
8845: $thisurl=&deversion($thisurl);
8846: $thisfn=&deversion($thisfn);
8847:
8848: my %bighash;
8849: my $okay=0;
8850:
8851: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8852: &GDBM_READER(),0640)) {
8853: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
8854: $thisurl =~ s/\?.+$//;
8855: }
8856: my $ids=$bighash{'ids_'.&clutter($thisurl)};
8857: unless ($ids) {
8858: $ids=$bighash{'ids_/'.$thisurl};
8859: }
8860: if ($ids) {
8861: # ------------------------------------------------------------------- Has ID(s)
8862: foreach my $id (split(/\,/,$ids)) {
8863: my ($mapid,$resid)=split(/\./,$id);
8864: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
8865: $symb =~ s/\?.+$//;
8866: }
8867: if (
8868: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
8869: eq $symb) {
8870: if (($env{'request.role.adv'}) ||
8871: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
8872: $okay=1;
8873: }
8874: }
8875: }
8876: }
8877: untie(%bighash);
8878: }
8879: return $okay;
8880: }
8881:
8882: # --------------------------------------------------------------- Clean-up symb
8883:
8884: sub symbclean {
8885: my $symb=shift;
8886: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8887: # remove version from map
8888: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
8889:
8890: # remove version from URL
8891: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
8892:
8893: # remove wrapper
8894:
8895: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
8896: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
8897: return $symb;
8898: }
8899:
8900: # ---------------------------------------------- Split symb to find map and url
8901:
8902: sub encode_symb {
8903: my ($map,$resid,$url)=@_;
8904: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
8905: }
8906:
8907: sub decode_symb {
8908: my $symb=shift;
8909: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8910: my ($map,$resid,$url)=split(/___/,$symb);
8911: return (&fixversion($map),$resid,&fixversion($url));
8912: }
8913:
8914: sub fixversion {
8915: my $fn=shift;
8916: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
8917: my %bighash;
8918: my $uri=&clutter($fn);
8919: my $key=$env{'request.course.id'}.'_'.$uri;
8920: # is this cached?
8921: my ($result,$cached)=&is_cached_new('courseresversion',$key);
8922: if (defined($cached)) { return $result; }
8923: # unfortunately not cached, or expired
8924: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8925: &GDBM_READER(),0640)) {
8926: if ($bighash{'version_'.$uri}) {
8927: my $version=$bighash{'version_'.$uri};
8928: unless (($version eq 'mostrecent') ||
8929: ($version==&getversion($uri))) {
8930: $uri=~s/\.(\w+)$/\.$version\.$1/;
8931: }
8932: }
8933: untie %bighash;
8934: }
8935: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
8936: }
8937:
8938: sub deversion {
8939: my $url=shift;
8940: $url=~s/\.\d+\.(\w+)$/\.$1/;
8941: return $url;
8942: }
8943:
8944: # ------------------------------------------------------ Return symb list entry
8945:
8946: sub symbread {
8947: my ($thisfn,$donotrecurse)=@_;
8948: my $cache_str='request.symbread.cached.'.$thisfn;
8949: if (defined($env{$cache_str})) { return $env{$cache_str}; }
8950: # no filename provided? try from environment
8951: unless ($thisfn) {
8952: if ($env{'request.symb'}) {
8953: return $env{$cache_str}=&symbclean($env{'request.symb'});
8954: }
8955: $thisfn=$env{'request.filename'};
8956: }
8957: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8958: # is that filename actually a symb? Verify, clean, and return
8959: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
8960: if (&symbverify($thisfn,$1)) {
8961: return $env{$cache_str}=&symbclean($thisfn);
8962: }
8963: }
8964: $thisfn=declutter($thisfn);
8965: my %hash;
8966: my %bighash;
8967: my $syval='';
8968: if (($env{'request.course.fn'}) && ($thisfn)) {
8969: my $targetfn = $thisfn;
8970: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
8971: $targetfn = 'adm/wrapper/'.$thisfn;
8972: }
8973: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
8974: $targetfn=$1;
8975: }
8976: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8977: &GDBM_READER(),0640)) {
8978: $syval=$hash{$targetfn};
8979: untie(%hash);
8980: }
8981: # ---------------------------------------------------------- There was an entry
8982: if ($syval) {
8983: #unless ($syval=~/\_\d+$/) {
8984: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
8985: #&appenv({'request.ambiguous' => $thisfn});
8986: #return $env{$cache_str}='';
8987: #}
8988: #$syval.=$1;
8989: #}
8990: } else {
8991: # ------------------------------------------------------- Was not in symb table
8992: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8993: &GDBM_READER(),0640)) {
8994: # ---------------------------------------------- Get ID(s) for current resource
8995: my $ids=$bighash{'ids_'.&clutter($thisfn)};
8996: unless ($ids) {
8997: $ids=$bighash{'ids_/'.$thisfn};
8998: }
8999: unless ($ids) {
9000: # alias?
9001: $ids=$bighash{'mapalias_'.$thisfn};
9002: }
9003: if ($ids) {
9004: # ------------------------------------------------------------------- Has ID(s)
9005: my @possibilities=split(/\,/,$ids);
9006: if ($#possibilities==0) {
9007: # ----------------------------------------------- There is only one possibility
9008: my ($mapid,$resid)=split(/\./,$ids);
9009: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9010: $resid,$thisfn);
9011: } elsif (!$donotrecurse) {
9012: # ------------------------------------------ There is more than one possibility
9013: my $realpossible=0;
9014: foreach my $id (@possibilities) {
9015: my $file=$bighash{'src_'.$id};
9016: if (&allowed('bre',$file)) {
9017: my ($mapid,$resid)=split(/\./,$id);
9018: if ($bighash{'map_type_'.$mapid} ne 'page') {
9019: $realpossible++;
9020: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9021: $resid,$thisfn);
9022: }
9023: }
9024: }
9025: if ($realpossible!=1) { $syval=''; }
9026: } else {
9027: $syval='';
9028: }
9029: }
9030: untie(%bighash)
9031: }
9032: }
9033: if ($syval) {
9034: return $env{$cache_str}=$syval;
9035: }
9036: }
9037: &appenv({'request.ambiguous' => $thisfn});
9038: return $env{$cache_str}='';
9039: }
9040:
9041: # ---------------------------------------------------------- Return random seed
9042:
9043: sub numval {
9044: my $txt=shift;
9045: $txt=~tr/A-J/0-9/;
9046: $txt=~tr/a-j/0-9/;
9047: $txt=~tr/K-T/0-9/;
9048: $txt=~tr/k-t/0-9/;
9049: $txt=~tr/U-Z/0-5/;
9050: $txt=~tr/u-z/0-5/;
9051: $txt=~s/\D//g;
9052: if ($_64bit) { if ($txt > 2**32) { return -1; } }
9053: return int($txt);
9054: }
9055:
9056: sub numval2 {
9057: my $txt=shift;
9058: $txt=~tr/A-J/0-9/;
9059: $txt=~tr/a-j/0-9/;
9060: $txt=~tr/K-T/0-9/;
9061: $txt=~tr/k-t/0-9/;
9062: $txt=~tr/U-Z/0-5/;
9063: $txt=~tr/u-z/0-5/;
9064: $txt=~s/\D//g;
9065: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9066: my $total;
9067: foreach my $val (@txts) { $total+=$val; }
9068: if ($_64bit) { if ($total > 2**32) { return -1; } }
9069: return int($total);
9070: }
9071:
9072: sub numval3 {
9073: use integer;
9074: my $txt=shift;
9075: $txt=~tr/A-J/0-9/;
9076: $txt=~tr/a-j/0-9/;
9077: $txt=~tr/K-T/0-9/;
9078: $txt=~tr/k-t/0-9/;
9079: $txt=~tr/U-Z/0-5/;
9080: $txt=~tr/u-z/0-5/;
9081: $txt=~s/\D//g;
9082: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9083: my $total;
9084: foreach my $val (@txts) { $total+=$val; }
9085: if ($_64bit) { $total=(($total<<32)>>32); }
9086: return $total;
9087: }
9088:
9089: sub digest {
9090: my ($data)=@_;
9091: my $digest=&Digest::MD5::md5($data);
9092: my ($a,$b,$c,$d)=unpack("iiii",$digest);
9093: my ($e,$f);
9094: {
9095: use integer;
9096: $e=($a+$b);
9097: $f=($c+$d);
9098: if ($_64bit) {
9099: $e=(($e<<32)>>32);
9100: $f=(($f<<32)>>32);
9101: }
9102: }
9103: if (wantarray) {
9104: return ($e,$f);
9105: } else {
9106: my $g;
9107: {
9108: use integer;
9109: $g=($e+$f);
9110: if ($_64bit) {
9111: $g=(($g<<32)>>32);
9112: }
9113: }
9114: return $g;
9115: }
9116: }
9117:
9118: sub latest_rnd_algorithm_id {
9119: return '64bit5';
9120: }
9121:
9122: sub get_rand_alg {
9123: my ($courseid)=@_;
9124: if (!$courseid) { $courseid=(&whichuser())[1]; }
9125: if ($courseid) {
9126: return $env{"course.$courseid.rndseed"};
9127: }
9128: return &latest_rnd_algorithm_id();
9129: }
9130:
9131: sub validCODE {
9132: my ($CODE)=@_;
9133: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
9134: return 0;
9135: }
9136:
9137: sub getCODE {
9138: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
9139: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
9140: defined($Apache::lonhomework::parsing_a_task) ) &&
9141: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
9142: return $Apache::lonhomework::history{'resource.CODE'};
9143: }
9144: return undef;
9145: }
9146:
9147: sub rndseed {
9148: my ($symb,$courseid,$domain,$username)=@_;
9149: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
9150: if (!defined($symb)) {
9151: unless ($symb=$wsymb) { return time; }
9152: }
9153: if (!$courseid) { $courseid=$wcourseid; }
9154: if (!$domain) { $domain=$wdomain; }
9155: if (!$username) { $username=$wusername }
9156: my $which=&get_rand_alg();
9157:
9158: if (defined(&getCODE())) {
9159: if ($which eq '64bit5') {
9160: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
9161: } elsif ($which eq '64bit4') {
9162: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
9163: } else {
9164: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
9165: }
9166: } elsif ($which eq '64bit5') {
9167: return &rndseed_64bit5($symb,$courseid,$domain,$username);
9168: } elsif ($which eq '64bit4') {
9169: return &rndseed_64bit4($symb,$courseid,$domain,$username);
9170: } elsif ($which eq '64bit3') {
9171: return &rndseed_64bit3($symb,$courseid,$domain,$username);
9172: } elsif ($which eq '64bit2') {
9173: return &rndseed_64bit2($symb,$courseid,$domain,$username);
9174: } elsif ($which eq '64bit') {
9175: return &rndseed_64bit($symb,$courseid,$domain,$username);
9176: }
9177: return &rndseed_32bit($symb,$courseid,$domain,$username);
9178: }
9179:
9180: sub rndseed_32bit {
9181: my ($symb,$courseid,$domain,$username)=@_;
9182: {
9183: use integer;
9184: my $symbchck=unpack("%32C*",$symb) << 27;
9185: my $symbseed=numval($symb) << 22;
9186: my $namechck=unpack("%32C*",$username) << 17;
9187: my $nameseed=numval($username) << 12;
9188: my $domainseed=unpack("%32C*",$domain) << 7;
9189: my $courseseed=unpack("%32C*",$courseid);
9190: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
9191: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9192: #&logthis("rndseed :$num:$symb");
9193: if ($_64bit) { $num=(($num<<32)>>32); }
9194: return $num;
9195: }
9196: }
9197:
9198: sub rndseed_64bit {
9199: my ($symb,$courseid,$domain,$username)=@_;
9200: {
9201: use integer;
9202: my $symbchck=unpack("%32S*",$symb) << 21;
9203: my $symbseed=numval($symb) << 10;
9204: my $namechck=unpack("%32S*",$username);
9205:
9206: my $nameseed=numval($username) << 21;
9207: my $domainseed=unpack("%32S*",$domain) << 10;
9208: my $courseseed=unpack("%32S*",$courseid);
9209:
9210: my $num1=$symbchck+$symbseed+$namechck;
9211: my $num2=$nameseed+$domainseed+$courseseed;
9212: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9213: #&logthis("rndseed :$num:$symb");
9214: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9215: return "$num1,$num2";
9216: }
9217: }
9218:
9219: sub rndseed_64bit2 {
9220: my ($symb,$courseid,$domain,$username)=@_;
9221: {
9222: use integer;
9223: # strings need to be an even # of cahracters long, it it is odd the
9224: # last characters gets thrown away
9225: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9226: my $symbseed=numval($symb) << 10;
9227: my $namechck=unpack("%32S*",$username.' ');
9228:
9229: my $nameseed=numval($username) << 21;
9230: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9231: my $courseseed=unpack("%32S*",$courseid.' ');
9232:
9233: my $num1=$symbchck+$symbseed+$namechck;
9234: my $num2=$nameseed+$domainseed+$courseseed;
9235: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9236: #&logthis("rndseed :$num:$symb");
9237: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9238: return "$num1,$num2";
9239: }
9240: }
9241:
9242: sub rndseed_64bit3 {
9243: my ($symb,$courseid,$domain,$username)=@_;
9244: {
9245: use integer;
9246: # strings need to be an even # of cahracters long, it it is odd the
9247: # last characters gets thrown away
9248: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9249: my $symbseed=numval2($symb) << 10;
9250: my $namechck=unpack("%32S*",$username.' ');
9251:
9252: my $nameseed=numval2($username) << 21;
9253: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9254: my $courseseed=unpack("%32S*",$courseid.' ');
9255:
9256: my $num1=$symbchck+$symbseed+$namechck;
9257: my $num2=$nameseed+$domainseed+$courseseed;
9258: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9259: #&logthis("rndseed :$num1:$num2:$_64bit");
9260: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9261:
9262: return "$num1:$num2";
9263: }
9264: }
9265:
9266: sub rndseed_64bit4 {
9267: my ($symb,$courseid,$domain,$username)=@_;
9268: {
9269: use integer;
9270: # strings need to be an even # of cahracters long, it it is odd the
9271: # last characters gets thrown away
9272: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9273: my $symbseed=numval3($symb) << 10;
9274: my $namechck=unpack("%32S*",$username.' ');
9275:
9276: my $nameseed=numval3($username) << 21;
9277: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9278: my $courseseed=unpack("%32S*",$courseid.' ');
9279:
9280: my $num1=$symbchck+$symbseed+$namechck;
9281: my $num2=$nameseed+$domainseed+$courseseed;
9282: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9283: #&logthis("rndseed :$num1:$num2:$_64bit");
9284: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9285:
9286: return "$num1:$num2";
9287: }
9288: }
9289:
9290: sub rndseed_64bit5 {
9291: my ($symb,$courseid,$domain,$username)=@_;
9292: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
9293: return "$num1:$num2";
9294: }
9295:
9296: sub rndseed_CODE_64bit {
9297: my ($symb,$courseid,$domain,$username)=@_;
9298: {
9299: use integer;
9300: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9301: my $symbseed=numval2($symb);
9302: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9303: my $CODEseed=numval(&getCODE());
9304: my $courseseed=unpack("%32S*",$courseid.' ');
9305: my $num1=$symbseed+$CODEchck;
9306: my $num2=$CODEseed+$courseseed+$symbchck;
9307: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9308: #&logthis("rndseed :$num1:$num2:$symb");
9309: if ($_64bit) { $num1=(($num1<<32)>>32); }
9310: if ($_64bit) { $num2=(($num2<<32)>>32); }
9311: return "$num1:$num2";
9312: }
9313: }
9314:
9315: sub rndseed_CODE_64bit4 {
9316: my ($symb,$courseid,$domain,$username)=@_;
9317: {
9318: use integer;
9319: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9320: my $symbseed=numval3($symb);
9321: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9322: my $CODEseed=numval3(&getCODE());
9323: my $courseseed=unpack("%32S*",$courseid.' ');
9324: my $num1=$symbseed+$CODEchck;
9325: my $num2=$CODEseed+$courseseed+$symbchck;
9326: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9327: #&logthis("rndseed :$num1:$num2:$symb");
9328: if ($_64bit) { $num1=(($num1<<32)>>32); }
9329: if ($_64bit) { $num2=(($num2<<32)>>32); }
9330: return "$num1:$num2";
9331: }
9332: }
9333:
9334: sub rndseed_CODE_64bit5 {
9335: my ($symb,$courseid,$domain,$username)=@_;
9336: my $code = &getCODE();
9337: my ($num1,$num2)=&digest("$symb,$courseid,$code");
9338: return "$num1:$num2";
9339: }
9340:
9341: sub setup_random_from_rndseed {
9342: my ($rndseed)=@_;
9343: if ($rndseed =~/([,:])/) {
9344: my ($num1,$num2)=split(/[,:]/,$rndseed);
9345: &Math::Random::random_set_seed(abs($num1),abs($num2));
9346: } else {
9347: &Math::Random::random_set_seed_from_phrase($rndseed);
9348: }
9349: }
9350:
9351: sub latest_receipt_algorithm_id {
9352: return 'receipt3';
9353: }
9354:
9355: sub recunique {
9356: my $fucourseid=shift;
9357: my $unique;
9358: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
9359: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9360: $unique=$env{"course.$fucourseid.internal.encseed"};
9361: } else {
9362: $unique=$perlvar{'lonReceipt'};
9363: }
9364: return unpack("%32C*",$unique);
9365: }
9366:
9367: sub recprefix {
9368: my $fucourseid=shift;
9369: my $prefix;
9370: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
9371: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9372: $prefix=$env{"course.$fucourseid.internal.encpref"};
9373: } else {
9374: $prefix=$perlvar{'lonHostID'};
9375: }
9376: return unpack("%32C*",$prefix);
9377: }
9378:
9379: sub ireceipt {
9380: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
9381:
9382: my $return =&recprefix($fucourseid).'-';
9383:
9384: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
9385: $env{'request.state'} eq 'construct') {
9386: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
9387: return $return;
9388: }
9389:
9390: my $cuname=unpack("%32C*",$funame);
9391: my $cudom=unpack("%32C*",$fudom);
9392: my $cucourseid=unpack("%32C*",$fucourseid);
9393: my $cusymb=unpack("%32C*",$fusymb);
9394: my $cunique=&recunique($fucourseid);
9395: my $cpart=unpack("%32S*",$part);
9396: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
9397:
9398: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
9399:
9400: $return.= ($cunique%$cuname+
9401: $cunique%$cudom+
9402: $cusymb%$cuname+
9403: $cusymb%$cudom+
9404: $cucourseid%$cuname+
9405: $cucourseid%$cudom+
9406: $cpart%$cuname+
9407: $cpart%$cudom);
9408: } else {
9409: $return.= ($cunique%$cuname+
9410: $cunique%$cudom+
9411: $cusymb%$cuname+
9412: $cusymb%$cudom+
9413: $cucourseid%$cuname+
9414: $cucourseid%$cudom);
9415: }
9416: return $return;
9417: }
9418:
9419: sub receipt {
9420: my ($part)=@_;
9421: my ($symb,$courseid,$domain,$name) = &whichuser();
9422: return &ireceipt($name,$domain,$courseid,$symb,$part);
9423: }
9424:
9425: sub whichuser {
9426: my ($passedsymb)=@_;
9427: my ($symb,$courseid,$domain,$name,$publicuser);
9428: if (defined($env{'form.grade_symb'})) {
9429: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
9430: my $allowed=&allowed('vgr',$tmp_courseid);
9431: if (!$allowed &&
9432: exists($env{'request.course.sec'}) &&
9433: $env{'request.course.sec'} !~ /^\s*$/) {
9434: $allowed=&allowed('vgr',$tmp_courseid.
9435: '/'.$env{'request.course.sec'});
9436: }
9437: if ($allowed) {
9438: ($symb)=&get_env_multiple('form.grade_symb');
9439: $courseid=$tmp_courseid;
9440: ($domain)=&get_env_multiple('form.grade_domain');
9441: ($name)=&get_env_multiple('form.grade_username');
9442: return ($symb,$courseid,$domain,$name,$publicuser);
9443: }
9444: }
9445: if (!$passedsymb) {
9446: $symb=&symbread();
9447: } else {
9448: $symb=$passedsymb;
9449: }
9450: $courseid=$env{'request.course.id'};
9451: $domain=$env{'user.domain'};
9452: $name=$env{'user.name'};
9453: if ($name eq 'public' && $domain eq 'public') {
9454: if (!defined($env{'form.username'})) {
9455: $env{'form.username'}.=time.rand(10000000);
9456: }
9457: $name.=$env{'form.username'};
9458: }
9459: return ($symb,$courseid,$domain,$name,$publicuser);
9460:
9461: }
9462:
9463: # ------------------------------------------------------------ Serves up a file
9464: # returns either the contents of the file or
9465: # -1 if the file doesn't exist
9466: #
9467: # if the target is a file that was uploaded via DOCS,
9468: # a check will be made to see if a current copy exists on the local server,
9469: # if it does this will be served, otherwise a copy will be retrieved from
9470: # the home server for the course and stored in /home/httpd/html/userfiles on
9471: # the local server.
9472:
9473: sub getfile {
9474: my ($file) = @_;
9475: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9476: &repcopy($file);
9477: return &readfile($file);
9478: }
9479:
9480: sub repcopy_userfile {
9481: my ($file)=@_;
9482: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9483: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
9484: my ($cdom,$cnum,$filename) =
9485: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
9486: my $uri="/uploaded/$cdom/$cnum/$filename";
9487: if (-e "$file") {
9488: # we already have a local copy, check it out
9489: my @fileinfo = stat($file);
9490: my $rtncode;
9491: my $info;
9492: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
9493: if ($lwpresp ne 'ok') {
9494: # there is no such file anymore, even though we had a local copy
9495: if ($rtncode eq '404') {
9496: unlink($file);
9497: }
9498: return -1;
9499: }
9500: if ($info < $fileinfo[9]) {
9501: # nice, the file we have is up-to-date, just say okay
9502: return 'ok';
9503: } else {
9504: # the file is outdated, get rid of it
9505: unlink($file);
9506: }
9507: }
9508: # one way or the other, at this point, we don't have the file
9509: # construct the correct path for the file
9510: my @parts = ($cdom,$cnum);
9511: if ($filename =~ m|^(.+)/[^/]+$|) {
9512: push @parts, split(/\//,$1);
9513: }
9514: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9515: foreach my $part (@parts) {
9516: $path .= '/'.$part;
9517: if (!-e $path) {
9518: mkdir($path,0770);
9519: }
9520: }
9521: # now the path exists for sure
9522: # get a user agent
9523: my $ua=new LWP::UserAgent;
9524: my $transferfile=$file.'.in.transfer';
9525: # FIXME: this should flock
9526: if (-e $transferfile) { return 'ok'; }
9527: my $request;
9528: $uri=~s/^\///;
9529: my $homeserver = &homeserver($cnum,$cdom);
9530: my $protocol = $protocol{$homeserver};
9531: $protocol = 'http' if ($protocol ne 'https');
9532: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9533: my $response=$ua->request($request,$transferfile);
9534: # did it work?
9535: if ($response->is_error()) {
9536: unlink($transferfile);
9537: &logthis("Userfile repcopy failed for $uri");
9538: return -1;
9539: }
9540: # worked, rename the transfer file
9541: rename($transferfile,$file);
9542: return 'ok';
9543: }
9544:
9545: sub tokenwrapper {
9546: my $uri=shift;
9547: $uri=~s|^https?\://([^/]+)||;
9548: $uri=~s|^/||;
9549: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9550: my $token=$1;
9551: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9552: if ($udom && $uname && $file) {
9553: $file=~s|(\?\.*)*$||;
9554: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9555: my $homeserver = &homeserver($uname,$udom);
9556: my $protocol = $protocol{$homeserver};
9557: $protocol = 'http' if ($protocol ne 'https');
9558: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9559: (($uri=~/\?/)?'&':'?').'token='.$token.
9560: '&tokenissued='.$perlvar{'lonHostID'};
9561: } else {
9562: return '/adm/notfound.html';
9563: }
9564: }
9565:
9566: # call with reqtype HEAD: get last modification time
9567: # call with reqtype GET: get the file contents
9568: # Do not call this with reqtype GET for large files! It loads everything into memory
9569: #
9570: sub getuploaded {
9571: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9572: $uri=~s/^\///;
9573: my $homeserver = &homeserver($cnum,$cdom);
9574: my $protocol = $protocol{$homeserver};
9575: $protocol = 'http' if ($protocol ne 'https');
9576: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9577: my $ua=new LWP::UserAgent;
9578: my $request=new HTTP::Request($reqtype,$uri);
9579: my $response=$ua->request($request);
9580: $$rtncode = $response->code;
9581: if (! $response->is_success()) {
9582: return 'failed';
9583: }
9584: if ($reqtype eq 'HEAD') {
9585: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9586: } elsif ($reqtype eq 'GET') {
9587: $$info = $response->content;
9588: }
9589: return 'ok';
9590: }
9591:
9592: sub readfile {
9593: my $file = shift;
9594: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9595: my $fh;
9596: open($fh,"<$file");
9597: my $a='';
9598: while (my $line = <$fh>) { $a .= $line; }
9599: return $a;
9600: }
9601:
9602: sub filelocation {
9603: my ($dir,$file) = @_;
9604: my $location;
9605: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9606:
9607: if ($file =~ m-^/adm/-) {
9608: $file=~s-^/adm/wrapper/-/-;
9609: $file=~s-^/adm/coursedocs/showdoc/-/-;
9610: }
9611:
9612: if ($file=~m:^/~:) { # is a contruction space reference
9613: $location = $file;
9614: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9615: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9616: # is a correct contruction space reference
9617: $location = $file;
9618: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9619: $location = $file;
9620: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9621: my ($udom,$uname,$filename)=
9622: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9623: my $home=&homeserver($uname,$udom);
9624: my $is_me=0;
9625: my @ids=¤t_machine_ids();
9626: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9627: if ($is_me) {
9628: $location=&propath($udom,$uname).'/userfiles/'.$filename;
9629: } else {
9630: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9631: $udom.'/'.$uname.'/'.$filename;
9632: }
9633: } elsif ($file =~ m-^/adm/-) {
9634: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9635: } else {
9636: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9637: $file=~s:^/res/:/:;
9638: if ( !( $file =~ m:^/:) ) {
9639: $location = $dir. '/'.$file;
9640: } else {
9641: $location = '/home/httpd/html/res'.$file;
9642: }
9643: }
9644: $location=~s://+:/:g; # remove duplicate /
9645: while ($location=~m{/\.\./}) {
9646: if ($location =~ m{/[^/]+/\.\./}) {
9647: $location=~ s{/[^/]+/\.\./}{/}g;
9648: } else {
9649: $location=~ s{/\.\./}{/}g;
9650: }
9651: } #remove dir/..
9652: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9653: return $location;
9654: }
9655:
9656: sub hreflocation {
9657: my ($dir,$file)=@_;
9658: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9659: $file=filelocation($dir,$file);
9660: } elsif ($file=~m-^/adm/-) {
9661: $file=~s-^/adm/wrapper/-/-;
9662: $file=~s-^/adm/coursedocs/showdoc/-/-;
9663: }
9664: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9665: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9666: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9667: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9668: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9669: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9670: -/uploaded/$1/$2/-x;
9671: }
9672: if ($file=~ m{^/userfiles/}) {
9673: $file =~ s{^/userfiles/}{/uploaded/};
9674: }
9675: return $file;
9676: }
9677:
9678: sub current_machine_domains {
9679: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9680: }
9681:
9682: sub machine_domains {
9683: my ($hostname) = @_;
9684: my @domains;
9685: my %hostname = &all_hostnames();
9686: while( my($id, $name) = each(%hostname)) {
9687: # &logthis("-$id-$name-$hostname-");
9688: if ($hostname eq $name) {
9689: push(@domains,&host_domain($id));
9690: }
9691: }
9692: return @domains;
9693: }
9694:
9695: sub current_machine_ids {
9696: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9697: }
9698:
9699: sub machine_ids {
9700: my ($hostname) = @_;
9701: $hostname ||= &hostname($perlvar{'lonHostID'});
9702: my @ids;
9703: my %name_to_host = &all_names();
9704: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9705: return @{ $name_to_host{$hostname} };
9706: }
9707: return;
9708: }
9709:
9710: sub additional_machine_domains {
9711: my @domains;
9712: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9713: while( my $line = <$fh>) {
9714: $line =~ s/\s//g;
9715: push(@domains,$line);
9716: }
9717: return @domains;
9718: }
9719:
9720: sub default_login_domain {
9721: my $domain = $perlvar{'lonDefDomain'};
9722: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9723: foreach my $posdom (¤t_machine_domains(),
9724: &additional_machine_domains()) {
9725: if (lc($posdom) eq lc($testdomain)) {
9726: $domain=$posdom;
9727: last;
9728: }
9729: }
9730: return $domain;
9731: }
9732:
9733: # ------------------------------------------------------------- Declutters URLs
9734:
9735: sub declutter {
9736: my $thisfn=shift;
9737: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9738: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9739: $thisfn=~s/^\///;
9740: $thisfn=~s|^adm/wrapper/||;
9741: $thisfn=~s|^adm/coursedocs/showdoc/||;
9742: $thisfn=~s/^res\///;
9743: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
9744: $thisfn=~s/\?.+$//;
9745: }
9746: return $thisfn;
9747: }
9748:
9749: # ------------------------------------------------------------- Clutter up URLs
9750:
9751: sub clutter {
9752: my $thisfn='/'.&declutter(shift);
9753: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9754: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9755: $thisfn='/res'.$thisfn;
9756: }
9757: if ($thisfn !~m|^/adm|) {
9758: if ($thisfn =~ m|^/ext/|) {
9759: $thisfn='/adm/wrapper'.$thisfn;
9760: } else {
9761: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9762: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9763: if ($embstyle eq 'ssi'
9764: || ($embstyle eq 'hdn')
9765: || ($embstyle eq 'rat')
9766: || ($embstyle eq 'prv')
9767: || ($embstyle eq 'ign')) {
9768: #do nothing with these
9769: } elsif (($embstyle eq 'img')
9770: || ($embstyle eq 'emb')
9771: || ($embstyle eq 'wrp')) {
9772: $thisfn='/adm/wrapper'.$thisfn;
9773: } elsif ($embstyle eq 'unk'
9774: && $thisfn!~/\.(sequence|page)$/) {
9775: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9776: } else {
9777: # &logthis("Got a blank emb style");
9778: }
9779: }
9780: }
9781: return $thisfn;
9782: }
9783:
9784: sub clutter_with_no_wrapper {
9785: my $uri = &clutter(shift);
9786: if ($uri =~ m-^/adm/-) {
9787: $uri =~ s-^/adm/wrapper/-/-;
9788: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9789: }
9790: return $uri;
9791: }
9792:
9793: sub freeze_escape {
9794: my ($value)=@_;
9795: if (ref($value)) {
9796: $value=&nfreeze($value);
9797: return '__FROZEN__'.&escape($value);
9798: }
9799: return &escape($value);
9800: }
9801:
9802:
9803: sub thaw_unescape {
9804: my ($value)=@_;
9805: if ($value =~ /^__FROZEN__/) {
9806: substr($value,0,10,undef);
9807: $value=&unescape($value);
9808: return &thaw($value);
9809: }
9810: return &unescape($value);
9811: }
9812:
9813: sub correct_line_ends {
9814: my ($result)=@_;
9815: $$result =~s/\r\n/\n/mg;
9816: $$result =~s/\r/\n/mg;
9817: }
9818: # ================================================================ Main Program
9819:
9820: sub goodbye {
9821: &logthis("Starting Shut down");
9822: #not converted to using infrastruture and probably shouldn't be
9823: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9824: #converted
9825: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9826: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9827: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9828: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
9829: #1.1 only
9830: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
9831: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
9832: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
9833: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
9834: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
9835: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
9836: &logthis(sprintf("%-20s is %s",'hits',$hits));
9837: &flushcourselogs();
9838: &logthis("Shutting down");
9839: }
9840:
9841: sub get_dns {
9842: my ($url,$func,$ignore_cache) = @_;
9843: if (!$ignore_cache) {
9844: my ($content,$cached)=
9845: &Apache::lonnet::is_cached_new('dns',$url);
9846: if ($cached) {
9847: &$func($content);
9848: return;
9849: }
9850: }
9851:
9852: my %alldns;
9853: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9854: foreach my $dns (<$config>) {
9855: next if ($dns !~ /^\^(\S*)/x);
9856: my $line = $1;
9857: my ($host,$protocol) = split(/:/,$line);
9858: if ($protocol ne 'https') {
9859: $protocol = 'http';
9860: }
9861: $alldns{$host} = $protocol;
9862: }
9863: while (%alldns) {
9864: my ($dns) = keys(%alldns);
9865: my $ua=new LWP::UserAgent;
9866: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
9867: my $response=$ua->request($request);
9868: delete($alldns{$dns});
9869: next if ($response->is_error());
9870: my @content = split("\n",$response->content);
9871: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
9872: &$func(\@content);
9873: return;
9874: }
9875: close($config);
9876: my $which = (split('/',$url))[3];
9877: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
9878: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
9879: my @content = <$config>;
9880: &$func(\@content);
9881: return;
9882: }
9883: # ------------------------------------------------------------ Read domain file
9884: {
9885: my $loaded;
9886: my %domain;
9887:
9888: sub parse_domain_tab {
9889: my ($lines) = @_;
9890: foreach my $line (@$lines) {
9891: next if ($line =~ /^(\#|\s*$ )/x);
9892:
9893: chomp($line);
9894: my ($name,@elements) = split(/:/,$line,9);
9895: my %this_domain;
9896: foreach my $field ('description', 'auth_def', 'auth_arg_def',
9897: 'lang_def', 'city', 'longi', 'lati',
9898: 'primary') {
9899: $this_domain{$field} = shift(@elements);
9900: }
9901: $domain{$name} = \%this_domain;
9902: }
9903: }
9904:
9905: sub reset_domain_info {
9906: undef($loaded);
9907: undef(%domain);
9908: }
9909:
9910: sub load_domain_tab {
9911: my ($ignore_cache) = @_;
9912: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
9913: my $fh;
9914: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
9915: my @lines = <$fh>;
9916: &parse_domain_tab(\@lines);
9917: }
9918: close($fh);
9919: $loaded = 1;
9920: }
9921:
9922: sub domain {
9923: &load_domain_tab() if (!$loaded);
9924:
9925: my ($name,$what) = @_;
9926: return if ( !exists($domain{$name}) );
9927:
9928: if (!$what) {
9929: return $domain{$name}{'description'};
9930: }
9931: return $domain{$name}{$what};
9932: }
9933:
9934: sub domain_info {
9935: &load_domain_tab() if (!$loaded);
9936: return %domain;
9937: }
9938:
9939: }
9940:
9941:
9942: # ------------------------------------------------------------- Read hosts file
9943: {
9944: my %hostname;
9945: my %hostdom;
9946: my %libserv;
9947: my $loaded;
9948: my %name_to_host;
9949: my %internetdom;
9950:
9951: sub parse_hosts_tab {
9952: my ($file) = @_;
9953: foreach my $configline (@$file) {
9954: next if ($configline =~ /^(\#|\s*$ )/x);
9955: next if ($configline =~ /^\^/);
9956: chomp($configline);
9957: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
9958: $name=~s/\s//g;
9959: if ($id && $domain && $role && $name) {
9960: $hostname{$id}=$name;
9961: push(@{$name_to_host{$name}}, $id);
9962: $hostdom{$id}=$domain;
9963: if ($role eq 'library') { $libserv{$id}=$name; }
9964: if (defined($protocol)) {
9965: if ($protocol eq 'https') {
9966: $protocol{$id} = $protocol;
9967: } else {
9968: $protocol{$id} = 'http';
9969: }
9970: } else {
9971: $protocol{$id} = 'http';
9972: }
9973: if (defined($intdom)) {
9974: $internetdom{$id} = $intdom;
9975: }
9976: }
9977: }
9978: }
9979:
9980: sub reset_hosts_info {
9981: &purge_remembered();
9982: &reset_domain_info();
9983: &reset_hosts_ip_info();
9984: undef(%name_to_host);
9985: undef(%hostname);
9986: undef(%hostdom);
9987: undef(%libserv);
9988: undef($loaded);
9989: }
9990:
9991: sub load_hosts_tab {
9992: my ($ignore_cache) = @_;
9993: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
9994: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9995: my @config = <$config>;
9996: &parse_hosts_tab(\@config);
9997: close($config);
9998: $loaded=1;
9999: }
10000:
10001: sub hostname {
10002: &load_hosts_tab() if (!$loaded);
10003:
10004: my ($lonid) = @_;
10005: return $hostname{$lonid};
10006: }
10007:
10008: sub all_hostnames {
10009: &load_hosts_tab() if (!$loaded);
10010:
10011: return %hostname;
10012: }
10013:
10014: sub all_names {
10015: &load_hosts_tab() if (!$loaded);
10016:
10017: return %name_to_host;
10018: }
10019:
10020: sub all_host_domain {
10021: &load_hosts_tab() if (!$loaded);
10022: return %hostdom;
10023: }
10024:
10025: sub is_library {
10026: &load_hosts_tab() if (!$loaded);
10027:
10028: return exists($libserv{$_[0]});
10029: }
10030:
10031: sub all_library {
10032: &load_hosts_tab() if (!$loaded);
10033:
10034: return %libserv;
10035: }
10036:
10037: sub unique_library {
10038: #2x reverse removes all hostnames that appear more than once
10039: my %unique = reverse &all_library();
10040: return reverse %unique;
10041: }
10042:
10043: sub get_servers {
10044: &load_hosts_tab() if (!$loaded);
10045:
10046: my ($domain,$type) = @_;
10047: my %possible_hosts = ($type eq 'library') ? %libserv
10048: : %hostname;
10049: my %result;
10050: if (ref($domain) eq 'ARRAY') {
10051: while ( my ($host,$hostname) = each(%possible_hosts)) {
10052: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
10053: $result{$host} = $hostname;
10054: }
10055: }
10056: } else {
10057: while ( my ($host,$hostname) = each(%possible_hosts)) {
10058: if ($hostdom{$host} eq $domain) {
10059: $result{$host} = $hostname;
10060: }
10061: }
10062: }
10063: return %result;
10064: }
10065:
10066: sub get_unique_servers {
10067: my %unique = reverse &get_servers(@_);
10068: return reverse %unique;
10069: }
10070:
10071: sub host_domain {
10072: &load_hosts_tab() if (!$loaded);
10073:
10074: my ($lonid) = @_;
10075: return $hostdom{$lonid};
10076: }
10077:
10078: sub all_domains {
10079: &load_hosts_tab() if (!$loaded);
10080:
10081: my %seen;
10082: my @uniq = grep(!$seen{$_}++, values(%hostdom));
10083: return @uniq;
10084: }
10085:
10086: sub internet_dom {
10087: &load_hosts_tab() if (!$loaded);
10088:
10089: my ($lonid) = @_;
10090: return $internetdom{$lonid};
10091: }
10092: }
10093:
10094: {
10095: my %iphost;
10096: my %name_to_ip;
10097: my %lonid_to_ip;
10098:
10099: sub get_hosts_from_ip {
10100: my ($ip) = @_;
10101: my %iphosts = &get_iphost();
10102: if (ref($iphosts{$ip})) {
10103: return @{$iphosts{$ip}};
10104: }
10105: return;
10106: }
10107:
10108: sub reset_hosts_ip_info {
10109: undef(%iphost);
10110: undef(%name_to_ip);
10111: undef(%lonid_to_ip);
10112: }
10113:
10114: sub get_host_ip {
10115: my ($lonid) = @_;
10116: if (exists($lonid_to_ip{$lonid})) {
10117: return $lonid_to_ip{$lonid};
10118: }
10119: my $name=&hostname($lonid);
10120: my $ip = gethostbyname($name);
10121: return if (!$ip || length($ip) ne 4);
10122: $ip=inet_ntoa($ip);
10123: $name_to_ip{$name} = $ip;
10124: $lonid_to_ip{$lonid} = $ip;
10125: return $ip;
10126: }
10127:
10128: sub get_iphost {
10129: my ($ignore_cache) = @_;
10130:
10131: if (!$ignore_cache) {
10132: if (%iphost) {
10133: return %iphost;
10134: }
10135: my ($ip_info,$cached)=
10136: &Apache::lonnet::is_cached_new('iphost','iphost');
10137: if ($cached) {
10138: %iphost = %{$ip_info->[0]};
10139: %name_to_ip = %{$ip_info->[1]};
10140: %lonid_to_ip = %{$ip_info->[2]};
10141: return %iphost;
10142: }
10143: }
10144:
10145: # get yesterday's info for fallback
10146: my %old_name_to_ip;
10147: my ($ip_info,$cached)=
10148: &Apache::lonnet::is_cached_new('iphost','iphost');
10149: if ($cached) {
10150: %old_name_to_ip = %{$ip_info->[1]};
10151: }
10152:
10153: my %name_to_host = &all_names();
10154: foreach my $name (keys(%name_to_host)) {
10155: my $ip;
10156: if (!exists($name_to_ip{$name})) {
10157: $ip = gethostbyname($name);
10158: if (!$ip || length($ip) ne 4) {
10159: if (defined($old_name_to_ip{$name})) {
10160: $ip = $old_name_to_ip{$name};
10161: &logthis("Can't find $name defaulting to old $ip");
10162: } else {
10163: &logthis("Name $name no IP found");
10164: next;
10165: }
10166: } else {
10167: $ip=inet_ntoa($ip);
10168: }
10169: $name_to_ip{$name} = $ip;
10170: } else {
10171: $ip = $name_to_ip{$name};
10172: }
10173: foreach my $id (@{ $name_to_host{$name} }) {
10174: $lonid_to_ip{$id} = $ip;
10175: }
10176: push(@{$iphost{$ip}},@{$name_to_host{$name}});
10177: }
10178: &Apache::lonnet::do_cache_new('iphost','iphost',
10179: [\%iphost,\%name_to_ip,\%lonid_to_ip],
10180: 48*60*60);
10181:
10182: return %iphost;
10183: }
10184:
10185: #
10186: # Given a DNS returns the loncapa host name for that DNS
10187: #
10188: sub host_from_dns {
10189: my ($dns) = @_;
10190: my @hosts;
10191: my $ip;
10192:
10193: if (exists($name_to_ip{$dns})) {
10194: $ip = $name_to_ip{$dns};
10195: }
10196: if (!$ip) {
10197: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
10198: if (length($ip) == 4) {
10199: $ip = &IO::Socket::inet_ntoa($ip);
10200: }
10201: }
10202: if ($ip) {
10203: @hosts = get_hosts_from_ip($ip);
10204: return $hosts[0];
10205: }
10206: return undef;
10207: }
10208:
10209: sub get_internet_names {
10210: my ($lonid) = @_;
10211: return if ($lonid eq '');
10212: my ($idnref,$cached)=
10213: &Apache::lonnet::is_cached_new('internetnames',$lonid);
10214: if ($cached) {
10215: return $idnref;
10216: }
10217: my $ip = &get_host_ip($lonid);
10218: my @hosts = &get_hosts_from_ip($ip);
10219: my %iphost = &get_iphost();
10220: my (@idns,%seen);
10221: foreach my $id (@hosts) {
10222: my $dom = &host_domain($id);
10223: my $prim_id = &domain($dom,'primary');
10224: my $prim_ip = &get_host_ip($prim_id);
10225: next if ($seen{$prim_ip});
10226: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
10227: foreach my $id (@{$iphost{$prim_ip}}) {
10228: my $intdom = &internet_dom($id);
10229: unless (grep(/^\Q$intdom\E$/,@idns)) {
10230: push(@idns,$intdom);
10231: }
10232: }
10233: }
10234: $seen{$prim_ip} = 1;
10235: }
10236: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
10237: }
10238:
10239: }
10240:
10241: sub all_loncaparevs {
10242: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
10243: }
10244:
10245: BEGIN {
10246:
10247: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
10248: unless ($readit) {
10249: {
10250: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
10251: %perlvar = (%perlvar,%{$configvars});
10252: }
10253:
10254:
10255: # ------------------------------------------------------ Read spare server file
10256: {
10257: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
10258:
10259: while (my $configline=<$config>) {
10260: chomp($configline);
10261: if ($configline) {
10262: my ($host,$type) = split(':',$configline,2);
10263: if (!defined($type) || $type eq '') { $type = 'default' };
10264: push(@{ $spareid{$type} }, $host);
10265: }
10266: }
10267: close($config);
10268: }
10269: # ------------------------------------------------------------ Read permissions
10270: {
10271: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
10272:
10273: while (my $configline=<$config>) {
10274: chomp($configline);
10275: if ($configline) {
10276: my ($role,$perm)=split(/ /,$configline);
10277: if ($perm ne '') { $pr{$role}=$perm; }
10278: }
10279: }
10280: close($config);
10281: }
10282:
10283: # -------------------------------------------- Read plain texts for permissions
10284: {
10285: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
10286:
10287: while (my $configline=<$config>) {
10288: chomp($configline);
10289: if ($configline) {
10290: my ($short,@plain)=split(/:/,$configline);
10291: %{$prp{$short}} = ();
10292: if (@plain > 0) {
10293: $prp{$short}{'std'} = $plain[0];
10294: for (my $i=1; $i<@plain; $i++) {
10295: $prp{$short}{'alt'.$i} = $plain[$i];
10296: }
10297: }
10298: }
10299: }
10300: close($config);
10301: }
10302:
10303: # ---------------------------------------------------------- Read package table
10304: {
10305: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
10306:
10307: while (my $configline=<$config>) {
10308: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
10309: chomp($configline);
10310: my ($short,$plain)=split(/:/,$configline);
10311: my ($pack,$name)=split(/\&/,$short);
10312: if ($plain ne '') {
10313: $packagetab{$pack.'&'.$name.'&name'}=$name;
10314: $packagetab{$short}=$plain;
10315: }
10316: }
10317: close($config);
10318: }
10319:
10320: # ---------------------------------------------------------- Read loncaparev table
10321: {
10322: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
10323: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
10324: while (my $configline=<$config>) {
10325: chomp($configline);
10326: my ($hostid,$loncaparev)=split(/:/,$configline);
10327: $loncaparevs{$hostid}=$loncaparev;
10328: }
10329: close($config);
10330: }
10331: }
10332: }
10333:
10334: # ---------------------------------------------------------- Read serverhostID table
10335: {
10336: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
10337: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
10338: while (my $configline=<$config>) {
10339: chomp($configline);
10340: my ($name,$id)=split(/:/,$configline);
10341: $serverhomeIDs{$name}=$id;
10342: }
10343: close($config);
10344: }
10345: }
10346: }
10347:
10348: {
10349: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
10350: if (-e $file) {
10351: my $parser = HTML::LCParser->new($file);
10352: while (my $token = $parser->get_token()) {
10353: if ($token->[0] eq 'S') {
10354: my $item = $token->[1];
10355: my $name = $token->[2]{'name'};
10356: my $value = $token->[2]{'value'};
10357: if ($item ne '' && $name ne '' && $value ne '') {
10358: my $release = $parser->get_text();
10359: $release =~ s/(^\s*|\s*$ )//gx;
10360: $needsrelease{$item.':'.$name.':'.$value} = $release;
10361: }
10362: }
10363: }
10364: }
10365: }
10366:
10367: # ------------- set up temporary directory
10368: {
10369: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
10370:
10371: }
10372:
10373: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
10374: 'compress_threshold'=> 20_000,
10375: });
10376:
10377: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
10378: $dumpcount=0;
10379: $locknum=0;
10380:
10381: &logtouch();
10382: &logthis('<font color="yellow">INFO: Read configuration</font>');
10383: $readit=1;
10384: {
10385: use integer;
10386: my $test=(2**32)+1;
10387: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
10388: &logthis(" Detected 64bit platform ($_64bit)");
10389: }
10390: }
10391: }
10392:
10393: 1;
10394: __END__
10395:
10396: =pod
10397:
10398: =head1 NAME
10399:
10400: Apache::lonnet - Subroutines to ask questions about things in the network.
10401:
10402: =head1 SYNOPSIS
10403:
10404: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
10405:
10406: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
10407:
10408: Common parameters:
10409:
10410: =over 4
10411:
10412: =item *
10413:
10414: $uname : an internal username (if $cname expecting a course Id specifically)
10415:
10416: =item *
10417:
10418: $udom : a domain (if $cdom expecting a course's domain specifically)
10419:
10420: =item *
10421:
10422: $symb : a resource instance identifier
10423:
10424: =item *
10425:
10426: $namespace : the name of a .db file that contains the data needed or
10427: being set.
10428:
10429: =back
10430:
10431: =head1 OVERVIEW
10432:
10433: lonnet provides subroutines which interact with the
10434: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
10435: about classes, users, and resources.
10436:
10437: For many of these objects you can also use this to store data about
10438: them or modify them in various ways.
10439:
10440: =head2 Symbs
10441:
10442: To identify a specific instance of a resource, LON-CAPA uses symbols
10443: or "symbs"X<symb>. These identifiers are built from the URL of the
10444: map, the resource number of the resource in the map, and the URL of
10445: the resource itself. The latter is somewhat redundant, but might help
10446: if maps change.
10447:
10448: An example is
10449:
10450: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
10451:
10452: The respective map entry is
10453:
10454: <resource id="19" src="/res/msu/korte/tests/part12.problem"
10455: title="Problem 2">
10456: </resource>
10457:
10458: Symbs are used by the random number generator, as well as to store and
10459: restore data specific to a certain instance of for example a problem.
10460:
10461: =head2 Storing And Retrieving Data
10462:
10463: X<store()>X<cstore()>X<restore()>Three of the most important functions
10464: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
10465: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
10466: is is the non-critical message twin of cstore. These functions are for
10467: handlers to store a perl hash to a user's permanent data space in an
10468: easy manner, and to retrieve it again on another call. It is expected
10469: that a handler would use this once at the beginning to retrieve data,
10470: and then again once at the end to send only the new data back.
10471:
10472: The data is stored in the user's data directory on the user's
10473: homeserver under the ID of the course.
10474:
10475: The hash that is returned by restore will have all of the previous
10476: value for all of the elements of the hash.
10477:
10478: Example:
10479:
10480: #creating a hash
10481: my %hash;
10482: $hash{'foo'}='bar';
10483:
10484: #storing it
10485: &Apache::lonnet::cstore(\%hash);
10486:
10487: #changing a value
10488: $hash{'foo'}='notbar';
10489:
10490: #adding a new value
10491: $hash{'bar'}='foo';
10492: &Apache::lonnet::cstore(\%hash);
10493:
10494: #retrieving the hash
10495: my %history=&Apache::lonnet::restore();
10496:
10497: #print the hash
10498: foreach my $key (sort(keys(%history))) {
10499: print("\%history{$key} = $history{$key}");
10500: }
10501:
10502: Will print out:
10503:
10504: %history{1:foo} = bar
10505: %history{1:keys} = foo:timestamp
10506: %history{1:timestamp} = 990455579
10507: %history{2:bar} = foo
10508: %history{2:foo} = notbar
10509: %history{2:keys} = foo:bar:timestamp
10510: %history{2:timestamp} = 990455580
10511: %history{bar} = foo
10512: %history{foo} = notbar
10513: %history{timestamp} = 990455580
10514: %history{version} = 2
10515:
10516: Note that the special hash entries C<keys>, C<version> and
10517: C<timestamp> were added to the hash. C<version> will be equal to the
10518: total number of versions of the data that have been stored. The
10519: C<timestamp> attribute will be the UNIX time the hash was
10520: stored. C<keys> is available in every historical section to list which
10521: keys were added or changed at a specific historical revision of a
10522: hash.
10523:
10524: B<Warning>: do not store the hash that restore returns directly. This
10525: will cause a mess since it will restore the historical keys as if the
10526: were new keys. I.E. 1:foo will become 1:1:foo etc.
10527:
10528: Calling convention:
10529:
10530: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
10531: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
10532:
10533: For more detailed information, see lonnet specific documentation.
10534:
10535: =head1 RETURN MESSAGES
10536:
10537: =over 4
10538:
10539: =item * B<con_lost>: unable to contact remote host
10540:
10541: =item * B<con_delayed>: unable to contact remote host, message will be delivered
10542: when the connection is brought back up
10543:
10544: =item * B<con_failed>: unable to contact remote host and unable to save message
10545: for later delivery
10546:
10547: =item * B<error:>: an error a occurred, a description of the error follows the :
10548:
10549: =item * B<no_such_host>: unable to fund a host associated with the user/domain
10550: that was requested
10551:
10552: =back
10553:
10554: =head1 PUBLIC SUBROUTINES
10555:
10556: =head2 Session Environment Functions
10557:
10558: =over 4
10559:
10560: =item *
10561: X<appenv()>
10562: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
10563: the user envirnoment file, and will be restored for each access this
10564: user makes during this session, also modifies the %env for the current
10565: process. Optional rolesarrayref - if defined contains a reference to an array
10566: of roles which are exempt from the restriction on modifying user.role entries
10567: in the user's environment.db and in %env.
10568:
10569: =item *
10570: X<delenv()>
10571: B<delenv($delthis,$regexp)>: removes all items from the session
10572: environment file that begin with $delthis. If the
10573: optional second arg - $regexp - is true, $delthis is treated as a
10574: regular expression, otherwise \Q$delthis\E is used.
10575: The values are also deleted from the current processes %env.
10576:
10577: =item * get_env_multiple($name)
10578:
10579: gets $name from the %env hash, it seemlessly handles the cases where multiple
10580: values may be defined and end up as an array ref.
10581:
10582: returns an array of values
10583:
10584: =back
10585:
10586: =head2 User Information
10587:
10588: =over 4
10589:
10590: =item *
10591: X<queryauthenticate()>
10592: B<queryauthenticate($uname,$udom)>: try to determine user's current
10593: authentication scheme
10594:
10595: =item *
10596: X<authenticate()>
10597: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
10598: authenticate user from domain's lib servers (first use the current
10599: one). C<$upass> should be the users password.
10600: $checkdefauth is optional (value is 1 if a check should be made to
10601: authenticate user using default authentication method, and allow
10602: account creation if username does not have account in the domain).
10603: $clientcancheckhost is optional (value is 1 if checking whether the
10604: server can host will occur on the client side in lonauth.pm).
10605:
10606: =item *
10607: X<homeserver()>
10608: B<homeserver($uname,$udom)>: find the server which has
10609: the user's directory and files (there must be only one), this caches
10610: the answer, and also caches if there is a borken connection.
10611:
10612: =item *
10613: X<idget()>
10614: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10615: (IDs are a unique resource in a domain, there must be only 1 ID per
10616: username, and only 1 username per ID in a specific domain) (returns
10617: hash: id=>name,id=>name)
10618:
10619: =item *
10620: X<idrget()>
10621: B<idrget($udom,@unames)>: find the IDs behind a list of
10622: usernames (returns hash: name=>id,name=>id)
10623:
10624: =item *
10625: X<idput()>
10626: B<idput($udom,%ids)>: store away a list of names and associated IDs
10627:
10628: =item *
10629: X<rolesinit()>
10630: B<rolesinit($udom,$username,$authhost)>: get user privileges
10631:
10632: =item *
10633: X<getsection()>
10634: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10635: course $cname, return section name/number or '' for "not in course"
10636: and '-1' for "no section"
10637:
10638: =item *
10639: X<userenvironment()>
10640: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10641: passed in @what from the requested user's environment, returns a hash
10642:
10643: =item *
10644: X<userlog_query()>
10645: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10646: activity.log file. %filters defines filters applied when parsing the
10647: log file. These can be start or end timestamps, or the type of action
10648: - log to look for Login or Logout events, check for Checkin or
10649: Checkout, role for role selection. The response is in the form
10650: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10651: escaped strings of the action recorded in the activity.log file.
10652:
10653: =back
10654:
10655: =head2 User Roles
10656:
10657: =over 4
10658:
10659: =item *
10660:
10661: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
10662: F: full access
10663: U,I,K: authentication modes (cxx only)
10664: '': forbidden
10665: 1: user needs to choose course
10666: 2: browse allowed
10667: A: passphrase authentication needed
10668:
10669: =item *
10670:
10671: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
10672: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
10673: and course level
10674:
10675: =item *
10676:
10677: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
10678: (rolesplain.tab); plain text explanation of a user role term.
10679: $type is Course (default) or Community.
10680: If $forcedefault evaluates to true, text returned will be default
10681: text for $type. Otherwise, if this is a course, the text returned
10682: will be a custom name for the role (if defined in the course's
10683: environment). If no custom name is defined the default is returned.
10684:
10685: =item *
10686:
10687: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
10688: All arguments are optional. Returns a hash of a roles, either for
10689: co-author/assistant author roles for a user's Construction Space
10690: (default), or if $context is 'userroles', roles for the user himself,
10691: In the hash, keys are set to colon-separated $uname,$udom,$role, and
10692: (optionally) if $withsec is true, a fourth colon-separated item - $section.
10693: For each key, value is set to colon-separated start and end times for
10694: the role. If no username and domain are specified, will default to
10695: current user/domain. Types, roles, and roledoms are references to arrays
10696: of role statuses (active, future or previous), roles
10697: (e.g., cc,in, st etc.) and domains of the roles which can be used
10698: to restrict the list of roles reported. If no array ref is
10699: provided for types, will default to return only active roles.
10700:
10701: =back
10702:
10703: =head2 User Modification
10704:
10705: =over 4
10706:
10707: =item *
10708:
10709: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
10710: user for the level given by URL. Optional start and end dates (leave empty
10711: string or zero for "no date")
10712:
10713: =item *
10714:
10715: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
10716: change a users, password, possible return values are: ok,
10717: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
10718: refused
10719:
10720: =item *
10721:
10722: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
10723:
10724: =item *
10725:
10726: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
10727: $forceid,$desiredhome,$email,$inststatus,$candelete) :
10728:
10729: will update user information (firstname,middlename,lastname,generation,
10730: permanentemail), and if forceid is true, student/employee ID also.
10731: A user's institutional affiliation(s) can also be updated.
10732: User information fields will not be overwritten with empty entries
10733: unless the field is included in the $candelete array reference.
10734: This array is included when a single user is modified via "Manage Users",
10735: or when Autoupdate.pl is run by cron in a domain.
10736:
10737: =item *
10738:
10739: modifystudent
10740:
10741: modify a student's enrollment and identification information.
10742: The course id is resolved based on the current users environment.
10743: This means the envoking user must be a course coordinator or otherwise
10744: associated with a course.
10745:
10746: This call is essentially a wrapper for lonnet::modifyuser and
10747: lonnet::modify_student_enrollment
10748:
10749: Inputs:
10750:
10751: =over 4
10752:
10753: =item B<$udom> Student's loncapa domain
10754:
10755: =item B<$uname> Student's loncapa login name
10756:
10757: =item B<$uid> Student/Employee ID
10758:
10759: =item B<$umode> Student's authentication mode
10760:
10761: =item B<$upass> Student's password
10762:
10763: =item B<$first> Student's first name
10764:
10765: =item B<$middle> Student's middle name
10766:
10767: =item B<$last> Student's last name
10768:
10769: =item B<$gene> Student's generation
10770:
10771: =item B<$usec> Student's section in course
10772:
10773: =item B<$end> Unix time of the roles expiration
10774:
10775: =item B<$start> Unix time of the roles start date
10776:
10777: =item B<$forceid> If defined, allow $uid to be changed
10778:
10779: =item B<$desiredhome> server to use as home server for student
10780:
10781: =item B<$email> Student's permanent e-mail address
10782:
10783: =item B<$type> Type of enrollment (auto or manual)
10784:
10785: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
10786:
10787: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
10788:
10789: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
10790:
10791: =item B<$context> role change context (shown in User Management Logs display in a course)
10792:
10793: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10794:
10795: =back
10796:
10797: =item *
10798:
10799: modify_student_enrollment
10800:
10801: Change a students enrollment status in a class. The environment variable
10802: 'role.request.course' must be defined for this function to proceed.
10803:
10804: Inputs:
10805:
10806: =over 4
10807:
10808: =item $udom, students domain
10809:
10810: =item $uname, students name
10811:
10812: =item $uid, students user id
10813:
10814: =item $first, students first name
10815:
10816: =item $middle
10817:
10818: =item $last
10819:
10820: =item $gene
10821:
10822: =item $usec
10823:
10824: =item $end
10825:
10826: =item $start
10827:
10828: =item $type
10829:
10830: =item $locktype
10831:
10832: =item $cid
10833:
10834: =item $selfenroll
10835:
10836: =item $context
10837:
10838: =back
10839:
10840:
10841: =item *
10842:
10843: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
10844: custom role; give a custom role to a user for the level given by URL. Specify
10845: name and domain of role author, and role name
10846:
10847: =item *
10848:
10849: revokerole($udom,$uname,$url,$role) : revoke a role for url
10850:
10851: =item *
10852:
10853: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
10854:
10855: =back
10856:
10857: =head2 Course Infomation
10858:
10859: =over 4
10860:
10861: =item *
10862:
10863: coursedescription($courseid) : returns a hash of information about the
10864: specified course id, including all environment settings for the
10865: course, the description of the course will be in the hash under the
10866: key 'description'
10867:
10868: =item *
10869:
10870: resdata($name,$domain,$type,@which) : request for current parameter
10871: setting for a specific $type, where $type is either 'course' or 'user',
10872: @what should be a list of parameters to ask about. This routine caches
10873: answers for 5 minutes.
10874:
10875: =item *
10876:
10877: get_courseresdata($courseid, $domain) : dump the entire course resource
10878: data base, returning a hash that is keyed by the resource name and has
10879: values that are the resource value. I believe that the timestamps and
10880: versions are also returned.
10881:
10882:
10883: =back
10884:
10885: =head2 Course Modification
10886:
10887: =over 4
10888:
10889: =item *
10890:
10891: writecoursepref($courseid,%prefs) : write preferences (environment
10892: database) for a course
10893:
10894: =item *
10895:
10896: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
10897:
10898: =item *
10899:
10900: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
10901:
10902: =back
10903:
10904: =head2 Resource Subroutines
10905:
10906: =over 4
10907:
10908: =item *
10909:
10910: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
10911:
10912: =item *
10913:
10914: repcopy($filename) : subscribes to the requested file, and attempts to
10915: replicate from the owning library server, Might return
10916: 'unavailable', 'not_found', 'forbidden', 'ok', or
10917: 'bad_request', also attempts to grab the metadata for the
10918: resource. Expects the local filesystem pathname
10919: (/home/httpd/html/res/....)
10920:
10921: =back
10922:
10923: =head2 Resource Information
10924:
10925: =over 4
10926:
10927: =item *
10928:
10929: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
10930: a vairety of different possible values, $varname should be a request
10931: string, and the other parameters can be used to specify who and what
10932: one is asking about.
10933:
10934: Possible values for $varname are environment.lastname (or other item
10935: from the envirnment hash), user.name (or someother aspect about the
10936: user), resource.0.maxtries (or some other part and parameter of a
10937: resource)
10938:
10939: =item *
10940:
10941: directcondval($number) : get current value of a condition; reads from a state
10942: string
10943:
10944: =item *
10945:
10946: condval($condidx) : value of condition index based on state
10947:
10948: =item *
10949:
10950: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
10951: resource's metadata, $what should be either a specific key, or either
10952: 'keys' (to get a list of possible keys) or 'packages' to get a list of
10953: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
10954:
10955: this function automatically caches all requests
10956:
10957: =item *
10958:
10959: metadata_query($query,$custom,$customshow) : make a metadata query against the
10960: network of library servers; returns file handle of where SQL and regex results
10961: will be stored for query
10962:
10963: =item *
10964:
10965: symbread($filename) : return symbolic list entry (filename argument optional);
10966: returns the data handle
10967:
10968: =item *
10969:
10970: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
10971: a possible symb for the URL in $thisfn, and if is an encryypted
10972: resource that the user accessed using /enc/ returns a 1 on success, 0
10973: on failure, user must be in a course, as it assumes the existance of
10974: the course initial hash, and uses $env('request.course.id'}
10975:
10976:
10977: =item *
10978:
10979: symbclean($symb) : removes versions numbers from a symb, returns the
10980: cleaned symb
10981:
10982: =item *
10983:
10984: is_on_map($uri) : checks if the $uri is somewhere on the current
10985: course map, user must be in a course for it to work.
10986:
10987: =item *
10988:
10989: numval($salt) : return random seed value (addend for rndseed)
10990:
10991: =item *
10992:
10993: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
10994: a random seed, all arguments are optional, if they aren't sent it uses the
10995: environment to derive them. Note: if symb isn't sent and it can't get one
10996: from &symbread it will use the current time as its return value
10997:
10998: =item *
10999:
11000: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
11001: unfakeable, receipt
11002:
11003: =item *
11004:
11005: receipt() : API to ireceipt working off of env values; given out to users
11006:
11007: =item *
11008:
11009: countacc($url) : count the number of accesses to a given URL
11010:
11011: =item *
11012:
11013: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
11014:
11015: =item *
11016:
11017: checkin($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 $tcrsid)
11018:
11019: =item *
11020:
11021: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
11022:
11023: =item *
11024:
11025: devalidate($symb) : devalidate temporary spreadsheet calculations,
11026: forcing spreadsheet to reevaluate the resource scores next time.
11027:
11028: =back
11029:
11030: =head2 Storing/Retreiving Data
11031:
11032: =over 4
11033:
11034: =item *
11035:
11036: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
11037: for this url; hashref needs to be given and should be a \%hashname; the
11038: remaining args aren't required and if they aren't passed or are '' they will
11039: be derived from the env
11040:
11041: =item *
11042:
11043: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
11044: uses critical subroutine
11045:
11046: =item *
11047:
11048: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
11049: all args are optional
11050:
11051: =item *
11052:
11053: dumpstore($namespace,$udom,$uname,$regexp,$range) :
11054: dumps the complete (or key matching regexp) namespace into a hash
11055: ($udom, $uname, $regexp, $range are optional) for a namespace that is
11056: normally &store()ed into
11057:
11058: $range should be either an integer '100' (give me the first 100
11059: matching records)
11060: or be two integers sperated by a - with no spaces
11061: '30-50' (give me the 30th through the 50th matching
11062: records)
11063:
11064:
11065: =item *
11066:
11067: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
11068: replaces a &store() version of data with a replacement set of data
11069: for a particular resource in a namespace passed in the $storehash hash
11070: reference
11071:
11072: =item *
11073:
11074: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
11075: works very similar to store/cstore, but all data is stored in a
11076: temporary location and can be reset using tmpreset, $storehash should
11077: be a hash reference, returns nothing on success
11078:
11079: =item *
11080:
11081: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
11082: similar to restore, but all data is stored in a temporary location and
11083: can be reset using tmpreset. Returns a hash of values on success,
11084: error string otherwise.
11085:
11086: =item *
11087:
11088: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
11089: deltes all keys for $symb form the temporary storage hash.
11090:
11091: =item *
11092:
11093: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11094: reference filled in from namesp ($udom and $uname are optional)
11095:
11096: =item *
11097:
11098: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
11099: namesp ($udom and $uname are optional)
11100:
11101: =item *
11102:
11103: dump($namespace,$udom,$uname,$regexp,$range) :
11104: dumps the complete (or key matching regexp) namespace into a hash
11105: ($udom, $uname, $regexp, $range are optional)
11106:
11107: $range should be either an integer '100' (give me the first 100
11108: matching records)
11109: or be two integers sperated by a - with no spaces
11110: '30-50' (give me the 30th through the 50th matching
11111: records)
11112: =item *
11113:
11114: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
11115: $store can be a scalar, an array reference, or if the amount to be
11116: incremented is > 1, a hash reference.
11117:
11118: ($udom and $uname are optional)
11119:
11120: =item *
11121:
11122: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
11123: ($udom and $uname are optional)
11124:
11125: =item *
11126:
11127: cput($namespace,$storehash,$udom,$uname) : critical put
11128: ($udom and $uname are optional)
11129:
11130: =item *
11131:
11132: newput($namespace,$storehash,$udom,$uname) :
11133:
11134: Attempts to store the items in the $storehash, but only if they don't
11135: currently exist, if this succeeds you can be certain that you have
11136: successfully created a new key value pair in the $namespace db.
11137:
11138:
11139: Args:
11140: $namespace: name of database to store values to
11141: $storehash: hashref to store to the db
11142: $udom: (optional) domain of user containing the db
11143: $uname: (optional) name of user caontaining the db
11144:
11145: Returns:
11146: 'ok' -> succeeded in storing all keys of $storehash
11147: 'key_exists: <key>' -> failed to anything out of $storehash, as at
11148: least <key> already existed in the db (other
11149: requested keys may also already exist)
11150: 'error: <msg>' -> unable to tie the DB or other error occurred
11151: 'con_lost' -> unable to contact request server
11152: 'refused' -> action was not allowed by remote machine
11153:
11154:
11155: =item *
11156:
11157: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11158: reference filled in from namesp (encrypts the return communication)
11159: ($udom and $uname are optional)
11160:
11161: =item *
11162:
11163: log($udom,$name,$home,$message) : write to permanent log for user; use
11164: critical subroutine
11165:
11166: =item *
11167:
11168: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
11169: array reference filled in from namespace found in domain level on either
11170: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
11171:
11172: =item *
11173:
11174: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
11175: domain level either on specified domain server ($uhome) or primary domain
11176: server ($udom and $uhome are optional)
11177:
11178: =item *
11179:
11180: get_domain_defaults($target_domain) : returns hash with defaults for
11181: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
11182: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
11183: or localauth), initial password or a kerberos realm, language (e.g., en-us).
11184: Values are retrieved from cache (if current), or from domain's configuration.db
11185: (if available), or lastly from values in lonTabs/dns_domain,tab,
11186: or lonTabs/domain.tab.
11187:
11188: %domdefaults = &get_auth_defaults($target_domain);
11189:
11190: =back
11191:
11192: =head2 Network Status Functions
11193:
11194: =over 4
11195:
11196: =item *
11197:
11198: dirlist($uri) : return directory list based on URI
11199:
11200: =item *
11201:
11202: spareserver() : find server with least workload from spare.tab
11203:
11204:
11205: =item *
11206:
11207: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
11208: if there is no corresponding loncapa host.
11209:
11210: =back
11211:
11212:
11213: =head2 Apache Request
11214:
11215: =over 4
11216:
11217: =item *
11218:
11219: ssi($url,%hash) : server side include, does a complete request cycle on url to
11220: localhost, posts hash
11221:
11222: =back
11223:
11224: =head2 Data to String to Data
11225:
11226: =over 4
11227:
11228: =item *
11229:
11230: hash2str(%hash) : convert a hash into a string complete with escaping and '='
11231: and '&' separators, supports elements that are arrayrefs and hashrefs
11232:
11233: =item *
11234:
11235: hashref2str($hashref) : convert a hashref into a string complete with
11236: escaping and '=' and '&' separators, supports elements that are
11237: arrayrefs and hashrefs
11238:
11239: =item *
11240:
11241: arrayref2str($arrayref) : convert an arrayref into a string complete
11242: with escaping and '&' separators, supports elements that are arrayrefs
11243: and hashrefs
11244:
11245: =item *
11246:
11247: str2hash($string) : convert string to hash using unescaping and
11248: splitting on '=' and '&', supports elements that are arrayrefs and
11249: hashrefs
11250:
11251: =item *
11252:
11253: str2array($string) : convert string to hash using unescaping and
11254: splitting on '&', supports elements that are arrayrefs and hashrefs
11255:
11256: =back
11257:
11258: =head2 Logging Routines
11259:
11260: =over 4
11261:
11262: These routines allow one to make log messages in the lonnet.log and
11263: lonnet.perm logfiles.
11264:
11265: =item *
11266:
11267: logtouch() : make sure the logfile, lonnet.log, exists
11268:
11269: =item *
11270:
11271: logthis() : append message to the normal lonnet.log file, it gets
11272: preiodically rolled over and deleted.
11273:
11274: =item *
11275:
11276: logperm() : append a permanent message to lonnet.perm.log, this log
11277: file never gets deleted by any automated portion of the system, only
11278: messages of critical importance should go in here.
11279:
11280: =back
11281:
11282: =head2 General File Helper Routines
11283:
11284: =over 4
11285:
11286: =item *
11287:
11288: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
11289: (a) files in /uploaded
11290: (i) If a local copy of the file exists -
11291: compares modification date of local copy with last-modified date for
11292: definitive version stored on home server for course. If local copy is
11293: stale, requests a new version from the home server and stores it.
11294: If the original has been removed from the home server, then local copy
11295: is unlinked.
11296: (ii) If local copy does not exist -
11297: requests the file from the home server and stores it.
11298:
11299: If $caller is 'uploadrep':
11300: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
11301: for request for files originally uploaded via DOCS.
11302: - returns 'ok' if fresh local copy now available, -1 otherwise.
11303:
11304: Otherwise:
11305: This indicates a call from the content generation phase of the request.
11306: - returns the entire contents of the file or -1.
11307:
11308: (b) files in /res
11309: - returns the entire contents of a file or -1;
11310: it properly subscribes to and replicates the file if neccessary.
11311:
11312:
11313: =item *
11314:
11315: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
11316: reference
11317:
11318: returns either a stat() list of data about the file or an empty list
11319: if the file doesn't exist or couldn't find out about it (connection
11320: problems or user unknown)
11321:
11322: =item *
11323:
11324: filelocation($dir,$file) : returns file system location of a file
11325: based on URI; meant to be "fairly clean" absolute reference, $dir is a
11326: directory that relative $file lookups are to looked in ($dir of /a/dir
11327: and a file of ../bob will become /a/bob)
11328:
11329: =item *
11330:
11331: hreflocation($dir,$file) : returns file system location or a URL; same as
11332: filelocation except for hrefs
11333:
11334: =item *
11335:
11336: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
11337:
11338: =back
11339:
11340: =head2 Usererfile file routines (/uploaded*)
11341:
11342: =over 4
11343:
11344: =item *
11345:
11346: userfileupload(): main rotine for putting a file in a user or course's
11347: filespace, arguments are,
11348:
11349: formname - required - this is the name of the element in $env where the
11350: filename, and the contents of the file to create/modifed exist
11351: the filename is in $env{'form.'.$formname.'.filename'} and the
11352: contents of the file is located in $env{'form.'.$formname}
11353: coursedoc - if true, store the file in the course of the active role
11354: of the current user
11355: subdir - required - subdirectory to put the file in under ../userfiles/
11356: if undefined, it will be placed in "unknown"
11357:
11358: (This routine calls clean_filename() to remove any dangerous
11359: characters from the filename, and then calls finuserfileupload() to
11360: complete the transaction)
11361:
11362: returns either the url of the uploaded file (/uploaded/....) if successful
11363: and /adm/notfound.html if unsuccessful
11364:
11365: =item *
11366:
11367: clean_filename(): routine for cleaing a filename up for storage in
11368: userfile space, argument is:
11369:
11370: filename - proposed filename
11371:
11372: returns: the new clean filename
11373:
11374: =item *
11375:
11376: finishuserfileupload(): routine that creaes and sends the file to
11377: userspace, probably shouldn't be called directly
11378:
11379: docuname: username or courseid of destination for the file
11380: docudom: domain of user/course of destination for the file
11381: formname: same as for userfileupload()
11382: fname: filename (inculding subdirectories) for the file
11383:
11384: returns either the url of the uploaded file (/uploaded/....) if successful
11385: and /adm/notfound.html if unsuccessful
11386:
11387: =item *
11388:
11389: renameuserfile(): renames an existing userfile to a new name
11390:
11391: Args:
11392: docuname: username or courseid of destination for the file
11393: docudom: domain of user/course of destination for the file
11394: old: current file name (including any subdirs under userfiles)
11395: new: desired file name (including any subdirs under userfiles)
11396:
11397: =item *
11398:
11399: mkdiruserfile(): creates a directory is a userfiles dir
11400:
11401: Args:
11402: docuname: username or courseid of destination for the file
11403: docudom: domain of user/course of destination for the file
11404: dir: dir to create (including any subdirs under userfiles)
11405:
11406: =item *
11407:
11408: removeuserfile(): removes a file that exists in userfiles
11409:
11410: Args:
11411: docuname: username or courseid of destination for the file
11412: docudom: domain of user/course of destination for the file
11413: fname: filname to delete (including any subdirs under userfiles)
11414:
11415: =item *
11416:
11417: removeuploadedurl(): convience function for removeuserfile()
11418:
11419: Args:
11420: url: a full /uploaded/... url to delete
11421:
11422: =item *
11423:
11424: get_portfile_permissions():
11425: Args:
11426: domain: domain of user or course contain the portfolio files
11427: user: name of user or num of course contain the portfolio files
11428: Returns:
11429: hashref of a dump of the proper file_permissions.db
11430:
11431:
11432: =item *
11433:
11434: get_access_controls():
11435:
11436: Args:
11437: current_permissions: the hash ref returned from get_portfile_permissions()
11438: group: (optional) the group you want the files associated with
11439: file: (optional) the file you want access info on
11440:
11441: Returns:
11442: a hash (keys are file names) of hashes containing
11443: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
11444: values are XML containing access control settings (see below)
11445:
11446: Internal notes:
11447:
11448: access controls are stored in file_permissions.db as key=value pairs.
11449: key -> path to file/file_name\0uniqueID:scope_end_start
11450: where scope -> public,guest,course,group,domains or users.
11451: end -> UNIX time for end of access (0 -> no end date)
11452: start -> UNIX time for start of access
11453:
11454: value -> XML description of access control
11455: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
11456: <start></start>
11457: <end></end>
11458:
11459: <password></password> for scope type = guest
11460:
11461: <domain></domain> for scope type = course or group
11462: <number></number>
11463: <roles id="">
11464: <role></role>
11465: <access></access>
11466: <section></section>
11467: <group></group>
11468: </roles>
11469:
11470: <dom></dom> for scope type = domains
11471:
11472: <users> for scope type = users
11473: <user>
11474: <uname></uname>
11475: <udom></udom>
11476: </user>
11477: </users>
11478: </scope>
11479:
11480: Access data is also aggregated for each file in an additional key=value pair:
11481: key -> path to file/file_name\0accesscontrol
11482: value -> reference to hash
11483: hash contains key = value pairs
11484: where key = uniqueID:scope_end_start
11485: value = UNIX time record was last updated
11486:
11487: Used to improve speed of look-ups of access controls for each file.
11488:
11489: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
11490:
11491: modify_access_controls():
11492:
11493: Modifies access controls for a portfolio file
11494: Args
11495: 1. file name
11496: 2. reference to hash of required changes,
11497: 3. domain
11498: 4. username
11499: where domain,username are the domain of the portfolio owner
11500: (either a user or a course)
11501:
11502: Returns:
11503: 1. result of additions or updates ('ok' or 'error', with error message).
11504: 2. result of deletions ('ok' or 'error', with error message).
11505: 3. reference to hash of any new or updated access controls.
11506: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
11507: key = integer (inbound ID)
11508: value = uniqueID
11509:
11510: =back
11511:
11512: =head2 HTTP Helper Routines
11513:
11514: =over 4
11515:
11516: =item *
11517:
11518: escape() : unpack non-word characters into CGI-compatible hex codes
11519:
11520: =item *
11521:
11522: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
11523:
11524: =back
11525:
11526: =head1 PRIVATE SUBROUTINES
11527:
11528: =head2 Underlying communication routines (Shouldn't call)
11529:
11530: =over 4
11531:
11532: =item *
11533:
11534: subreply() : tries to pass a message to lonc, returns con_lost if incapable
11535:
11536: =item *
11537:
11538: reply() : uses subreply to send a message to remote machine, logs all failures
11539:
11540: =item *
11541:
11542: critical() : passes a critical message to another server; if cannot
11543: get through then place message in connection buffer directory and
11544: returns con_delayed, if incapable of saving message, returns
11545: con_failed
11546:
11547: =item *
11548:
11549: reconlonc() : tries to reconnect lonc client processes.
11550:
11551: =back
11552:
11553: =head2 Resource Access Logging
11554:
11555: =over 4
11556:
11557: =item *
11558:
11559: flushcourselogs() : flush (save) buffer logs and access logs
11560:
11561: =item *
11562:
11563: courselog($what) : save message for course in hash
11564:
11565: =item *
11566:
11567: courseacclog($what) : save message for course using &courselog(). Perform
11568: special processing for specific resource types (problems, exams, quizzes, etc).
11569:
11570: =item *
11571:
11572: goodbye() : flush course logs and log shutting down; it is called in srm.conf
11573: as a PerlChildExitHandler
11574:
11575: =back
11576:
11577: =head2 Other
11578:
11579: =over 4
11580:
11581: =item *
11582:
11583: symblist($mapname,%newhash) : update symbolic storage links
11584:
11585: =back
11586:
11587: =cut
11588:
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