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[LON-CAPA] /
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lonnet /
perl /
lonnet.pm
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Fri Jul 31 02:20:17 2009 UTC (15 years ago) by
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- Additional args for &lonnet::courseiddump().
- Can filter courses to only retrieve courses cloneable by requestor/owner of new course.
- Will retrieve information about allowed cloners (including courses for which cloning rights apply automatically because of active CC role).
- Term used for collaborative space changed from Group to Community.
- Coordinator role for Community simply called "Coordinator".
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1008 2009/07/31 02:20:17 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);
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 LONCAPA qw(:DEFAULT :match);
96: use LONCAPA::Configuration;
97:
98: my $readit;
99: my $max_connection_retries = 10; # Or some such value.
100:
101: my $upload_photo_form = 0; #Variable to check when user upload a photo 0=not 1=true
102:
103: require Exporter;
104:
105: our @ISA = qw (Exporter);
106: our @EXPORT = qw(%env);
107:
108:
109: # --------------------------------------------------------------------- Logging
110: {
111: my $logid;
112: sub instructor_log {
113: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
114: if (($cnum eq '') || ($cdom eq '')) {
115: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
116: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
117: }
118: $logid++;
119: my $now = time();
120: my $id=$now.'00000'.$$.'00000'.$logid;
121: return &Apache::lonnet::put('nohist_'.$hash_name,
122: { $id => {
123: 'exe_uname' => $env{'user.name'},
124: 'exe_udom' => $env{'user.domain'},
125: 'exe_time' => $now,
126: 'exe_ip' => $ENV{'REMOTE_ADDR'},
127: 'delflag' => $delflag,
128: 'logentry' => $storehash,
129: 'uname' => $uname,
130: 'udom' => $udom,
131: }
132: },$cdom,$cnum);
133: }
134: }
135:
136: sub logtouch {
137: my $execdir=$perlvar{'lonDaemons'};
138: unless (-e "$execdir/logs/lonnet.log") {
139: open(my $fh,">>$execdir/logs/lonnet.log");
140: close $fh;
141: }
142: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
143: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
144: }
145:
146: sub logthis {
147: my $message=shift;
148: my $execdir=$perlvar{'lonDaemons'};
149: my $now=time;
150: my $local=localtime($now);
151: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
152: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
153: print $fh $logstring;
154: close($fh);
155: }
156: return 1;
157: }
158:
159: sub logperm {
160: my $message=shift;
161: my $execdir=$perlvar{'lonDaemons'};
162: my $now=time;
163: my $local=localtime($now);
164: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
165: print $fh "$now:$message:$local\n";
166: close($fh);
167: }
168: return 1;
169: }
170:
171: sub create_connection {
172: my ($hostname,$lonid) = @_;
173: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
174: Type => SOCK_STREAM,
175: Timeout => 10);
176: return 0 if (!$client);
177: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
178: my $result = <$client>;
179: chomp($result);
180: return 1 if ($result eq 'done');
181: return 0;
182: }
183:
184: sub get_server_timezone {
185: my ($cnum,$cdom) = @_;
186: my $home=&homeserver($cnum,$cdom);
187: if ($home ne 'no_host') {
188: my $cachetime = 24*3600;
189: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
190: if (defined($cached)) {
191: return $timezone;
192: } else {
193: my $timezone = &reply('servertimezone',$home);
194: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
195: }
196: }
197: }
198:
199: sub get_server_loncaparev {
200: my ($dom,$lonhost) = @_;
201: if (defined($lonhost)) {
202: if (!defined(&hostname($lonhost))) {
203: undef($lonhost);
204: }
205: }
206: if (!defined($lonhost)) {
207: if (defined(&domain($dom,'primary'))) {
208: $lonhost=&domain($dom,'primary');
209: if ($lonhost eq 'no_host') {
210: undef($lonhost);
211: }
212: }
213: }
214: if (defined($lonhost)) {
215: my $cachetime = 24*3600;
216: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
217: if (defined($cached)) {
218: return $loncaparev;
219: } else {
220: my $loncaparev = &reply('serverloncaparev',$lonhost);
221: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
222: }
223: }
224: }
225:
226: # -------------------------------------------------- Non-critical communication
227: sub subreply {
228: my ($cmd,$server)=@_;
229: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
230: #
231: # With loncnew process trimming, there's a timing hole between lonc server
232: # process exit and the master server picking up the listen on the AF_UNIX
233: # socket. In that time interval, a lock file will exist:
234:
235: my $lockfile=$peerfile.".lock";
236: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
237: sleep(1);
238: }
239: # At this point, either a loncnew parent is listening or an old lonc
240: # or loncnew child is listening so we can connect or everything's dead.
241: #
242: # We'll give the connection a few tries before abandoning it. If
243: # connection is not possible, we'll con_lost back to the client.
244: #
245: my $client;
246: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
247: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
248: Type => SOCK_STREAM,
249: Timeout => 10);
250: if ($client) {
251: last; # Connected!
252: } else {
253: &create_connection(&hostname($server),$server);
254: }
255: sleep(1); # Try again later if failed connection.
256: }
257: my $answer;
258: if ($client) {
259: print $client "sethost:$server:$cmd\n";
260: $answer=<$client>;
261: if (!$answer) { $answer="con_lost"; }
262: chomp($answer);
263: } else {
264: $answer = 'con_lost'; # Failed connection.
265: }
266: return $answer;
267: }
268:
269: sub reply {
270: my ($cmd,$server)=@_;
271: unless (defined(&hostname($server))) { return 'no_such_host'; }
272: my $answer=subreply($cmd,$server);
273: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
274: &logthis("<font color=\"blue\">WARNING:".
275: " $cmd to $server returned $answer</font>");
276: }
277: return $answer;
278: }
279:
280: # ----------------------------------------------------------- Send USR1 to lonc
281:
282: sub reconlonc {
283: my ($lonid) = @_;
284: my $hostname = &hostname($lonid);
285: if ($lonid) {
286: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
287: if ($hostname && -e $peerfile) {
288: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
289: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
290: Type => SOCK_STREAM,
291: Timeout => 10);
292: if ($client) {
293: print $client ("reset_retries\n");
294: my $answer=<$client>;
295: #reset just this one.
296: }
297: }
298: return;
299: }
300:
301: &logthis("Trying to reconnect lonc");
302: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
303: if (open(my $fh,"<$loncfile")) {
304: my $loncpid=<$fh>;
305: chomp($loncpid);
306: if (kill 0 => $loncpid) {
307: &logthis("lonc at pid $loncpid responding, sending USR1");
308: kill USR1 => $loncpid;
309: sleep 1;
310: } else {
311: &logthis(
312: "<font color=\"blue\">WARNING:".
313: " lonc at pid $loncpid not responding, giving up</font>");
314: }
315: } else {
316: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
317: }
318: }
319:
320: # ------------------------------------------------------ Critical communication
321:
322: sub critical {
323: my ($cmd,$server)=@_;
324: unless (&hostname($server)) {
325: &logthis("<font color=\"blue\">WARNING:".
326: " Critical message to unknown server ($server)</font>");
327: return 'no_such_host';
328: }
329: my $answer=reply($cmd,$server);
330: if ($answer eq 'con_lost') {
331: &reconlonc("$perlvar{'lonSockDir'}/$server");
332: my $answer=reply($cmd,$server);
333: if ($answer eq 'con_lost') {
334: my $now=time;
335: my $middlename=$cmd;
336: $middlename=substr($middlename,0,16);
337: $middlename=~s/\W//g;
338: my $dfilename=
339: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
340: $dumpcount++;
341: {
342: my $dfh;
343: if (open($dfh,">$dfilename")) {
344: print $dfh "$cmd\n";
345: close($dfh);
346: }
347: }
348: sleep 2;
349: my $wcmd='';
350: {
351: my $dfh;
352: if (open($dfh,"<$dfilename")) {
353: $wcmd=<$dfh>;
354: close($dfh);
355: }
356: }
357: chomp($wcmd);
358: if ($wcmd eq $cmd) {
359: &logthis("<font color=\"blue\">WARNING: ".
360: "Connection buffer $dfilename: $cmd</font>");
361: &logperm("D:$server:$cmd");
362: return 'con_delayed';
363: } else {
364: &logthis("<font color=\"red\">CRITICAL:"
365: ." Critical connection failed: $server $cmd</font>");
366: &logperm("F:$server:$cmd");
367: return 'con_failed';
368: }
369: }
370: }
371: return $answer;
372: }
373:
374: # ------------------------------------------- check if return value is an error
375:
376: sub error {
377: my ($result) = @_;
378: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
379: if ($2 == 2) { return undef; }
380: return $1;
381: }
382: return undef;
383: }
384:
385: sub convert_and_load_session_env {
386: my ($lonidsdir,$handle)=@_;
387: my @profile;
388: {
389: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
390: if (!$opened) {
391: return 0;
392: }
393: flock($idf,LOCK_SH);
394: @profile=<$idf>;
395: close($idf);
396: }
397: my %temp_env;
398: foreach my $line (@profile) {
399: if ($line !~ m/=/) {
400: return 0;
401: }
402: chomp($line);
403: my ($envname,$envvalue)=split(/=/,$line,2);
404: $temp_env{&unescape($envname)} = &unescape($envvalue);
405: }
406: unlink("$lonidsdir/$handle.id");
407: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
408: 0640)) {
409: %disk_env = %temp_env;
410: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
411: untie(%disk_env);
412: }
413: return 1;
414: }
415:
416: # ------------------------------------------- Transfer profile into environment
417: my $env_loaded;
418: sub transfer_profile_to_env {
419: my ($lonidsdir,$handle,$force_transfer) = @_;
420: if (!$force_transfer && $env_loaded) { return; }
421:
422: if (!defined($lonidsdir)) {
423: $lonidsdir = $perlvar{'lonIDsDir'};
424: }
425: if (!defined($handle)) {
426: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
427: }
428:
429: my $convert;
430: {
431: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
432: if (!$opened) {
433: return;
434: }
435: flock($idf,LOCK_SH);
436: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
437: &GDBM_READER(),0640)) {
438: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
439: untie(%disk_env);
440: } else {
441: $convert = 1;
442: }
443: }
444: if ($convert) {
445: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
446: &logthis("Failed to load session, or convert session.");
447: }
448: }
449:
450: my %remove;
451: while ( my $envname = each(%env) ) {
452: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
453: if ($time < time-300) {
454: $remove{$key}++;
455: }
456: }
457: }
458:
459: $env{'user.environment'} = "$lonidsdir/$handle.id";
460: $env_loaded=1;
461: foreach my $expired_key (keys(%remove)) {
462: &delenv($expired_key);
463: }
464: }
465:
466: # ---------------------------------------------------- Check for valid session
467: sub check_for_valid_session {
468: my ($r) = @_;
469: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
470: my $lonid=$cookies{'lonID'};
471: return undef if (!$lonid);
472:
473: my $handle=&LONCAPA::clean_handle($lonid->value);
474: my $lonidsdir=$r->dir_config('lonIDsDir');
475: return undef if (!-e "$lonidsdir/$handle.id");
476:
477: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
478: return undef if (!$opened);
479:
480: flock($idf,LOCK_SH);
481: my %disk_env;
482: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
483: &GDBM_READER(),0640)) {
484: return undef;
485: }
486:
487: if (!defined($disk_env{'user.name'})
488: || !defined($disk_env{'user.domain'})) {
489: return undef;
490: }
491: return $handle;
492: }
493:
494: sub timed_flock {
495: my ($file,$lock_type) = @_;
496: my $failed=0;
497: eval {
498: local $SIG{__DIE__}='DEFAULT';
499: local $SIG{ALRM}=sub {
500: $failed=1;
501: die("failed lock");
502: };
503: alarm(13);
504: flock($file,$lock_type);
505: alarm(0);
506: };
507: if ($failed) {
508: return undef;
509: } else {
510: return 1;
511: }
512: }
513:
514: # ---------------------------------------------------------- Append Environment
515:
516: sub appenv {
517: my ($newenv,$roles) = @_;
518: if (ref($newenv) eq 'HASH') {
519: foreach my $key (keys(%{$newenv})) {
520: my $refused = 0;
521: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
522: $refused = 1;
523: if (ref($roles) eq 'ARRAY') {
524: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
525: if (grep(/^\Q$role\E$/,@{$roles})) {
526: $refused = 0;
527: }
528: }
529: }
530: if ($refused) {
531: &logthis("<font color=\"blue\">WARNING: ".
532: "Attempt to modify environment ".$key." to ".$newenv->{$key}
533: .'</font>');
534: delete($newenv->{$key});
535: } else {
536: $env{$key}=$newenv->{$key};
537: }
538: }
539: my $opened = open(my $env_file,'+<',$env{'user.environment'});
540: if ($opened
541: && &timed_flock($env_file,LOCK_EX)
542: &&
543: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
544: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
545: while (my ($key,$value) = each(%{$newenv})) {
546: $disk_env{$key} = $value;
547: }
548: untie(%disk_env);
549: }
550: }
551: return 'ok';
552: }
553: # ----------------------------------------------------- Delete from Environment
554:
555: sub delenv {
556: my ($delthis,$regexp) = @_;
557: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
558: &logthis("<font color=\"blue\">WARNING: ".
559: "Attempt to delete from environment ".$delthis);
560: return 'error';
561: }
562: my $opened = open(my $env_file,'+<',$env{'user.environment'});
563: if ($opened
564: && &timed_flock($env_file,LOCK_EX)
565: &&
566: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
567: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
568: foreach my $key (keys(%disk_env)) {
569: if ($regexp) {
570: if ($key=~/^$delthis/) {
571: delete($env{$key});
572: delete($disk_env{$key});
573: }
574: } else {
575: if ($key=~/^\Q$delthis\E/) {
576: delete($env{$key});
577: delete($disk_env{$key});
578: }
579: }
580: }
581: untie(%disk_env);
582: }
583: return 'ok';
584: }
585:
586: sub get_env_multiple {
587: my ($name) = @_;
588: my @values;
589: if (defined($env{$name})) {
590: # exists is it an array
591: if (ref($env{$name})) {
592: @values=@{ $env{$name} };
593: } else {
594: $values[0]=$env{$name};
595: }
596: }
597: return(@values);
598: }
599:
600: # ------------------------------------------------------------------- Locking
601:
602: sub set_lock {
603: my ($text)=@_;
604: $locknum++;
605: my $id=$$.'-'.$locknum;
606: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
607: 'session.lock.'.$id => $text});
608: return $id;
609: }
610:
611: sub get_locks {
612: my $num=0;
613: my %texts=();
614: foreach my $lock (split(/\,/,$env{'session.locks'})) {
615: if ($lock=~/\w/) {
616: $num++;
617: $texts{$lock}=$env{'session.lock.'.$lock};
618: }
619: }
620: return ($num,%texts);
621: }
622:
623: sub remove_lock {
624: my ($id)=@_;
625: my $newlocks='';
626: foreach my $lock (split(/\,/,$env{'session.locks'})) {
627: if (($lock=~/\w/) && ($lock ne $id)) {
628: $newlocks.=','.$lock;
629: }
630: }
631: &appenv({'session.locks' => $newlocks});
632: &delenv('session.lock.'.$id);
633: }
634:
635: sub remove_all_locks {
636: my $activelocks=$env{'session.locks'};
637: foreach my $lock (split(/\,/,$env{'session.locks'})) {
638: if ($lock=~/\w/) {
639: &remove_lock($lock);
640: }
641: }
642: }
643:
644:
645: # ------------------------------------------ Find out current server userload
646: sub userload {
647: my $numusers=0;
648: {
649: opendir(LONIDS,$perlvar{'lonIDsDir'});
650: my $filename;
651: my $curtime=time;
652: while ($filename=readdir(LONIDS)) {
653: next if ($filename eq '.' || $filename eq '..');
654: next if ($filename =~ /publicuser_\d+\.id/);
655: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
656: if ($curtime-$mtime < 1800) { $numusers++; }
657: }
658: closedir(LONIDS);
659: }
660: my $userloadpercent=0;
661: my $maxuserload=$perlvar{'lonUserLoadLim'};
662: if ($maxuserload) {
663: $userloadpercent=100*$numusers/$maxuserload;
664: }
665: $userloadpercent=sprintf("%.2f",$userloadpercent);
666: return $userloadpercent;
667: }
668:
669: # ------------------------------------------ Fight off request when overloaded
670:
671: sub overloaderror {
672: my ($r,$checkserver)=@_;
673: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
674: my $loadavg;
675: if ($checkserver eq $perlvar{'lonHostID'}) {
676: open(my $loadfile,'/proc/loadavg');
677: $loadavg=<$loadfile>;
678: $loadavg =~ s/\s.*//g;
679: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
680: close($loadfile);
681: } else {
682: $loadavg=&reply('load',$checkserver);
683: }
684: my $overload=$loadavg-100;
685: if ($overload>0) {
686: $r->err_headers_out->{'Retry-After'}=$overload;
687: $r->log_error('Overload of '.$overload.' on '.$checkserver);
688: return 413;
689: }
690: return '';
691: }
692:
693: # ------------------------------ Find server with least workload from spare.tab
694:
695: sub spareserver {
696: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
697: my $spare_server;
698: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
699: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
700: : $userloadpercent;
701:
702: foreach my $try_server (@{ $spareid{'primary'} }) {
703: ($spare_server, $lowest_load) =
704: &compare_server_load($try_server, $spare_server, $lowest_load);
705: }
706:
707: my $found_server = ($spare_server ne '' && $lowest_load < 100);
708:
709: if (!$found_server) {
710: foreach my $try_server (@{ $spareid{'default'} }) {
711: ($spare_server, $lowest_load) =
712: &compare_server_load($try_server, $spare_server, $lowest_load);
713: }
714: }
715:
716: if (!$want_server_name) {
717: my $protocol = 'http';
718: if ($protocol{$spare_server} eq 'https') {
719: $protocol = $protocol{$spare_server};
720: }
721: if (defined($spare_server)) {
722: my $hostname = &hostname($spare_server);
723: if (defined($hostname)) {
724: $spare_server = $protocol.'://'.$hostname;
725: }
726: }
727: }
728: return $spare_server;
729: }
730:
731: sub compare_server_load {
732: my ($try_server, $spare_server, $lowest_load) = @_;
733:
734: my $loadans = &reply('load', $try_server);
735: my $userloadans = &reply('userload',$try_server);
736:
737: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
738: next; #didn't get a number from the server
739: }
740:
741: my $load;
742: if ($loadans =~ /\d/) {
743: if ($userloadans =~ /\d/) {
744: #both are numbers, pick the bigger one
745: $load = ($loadans > $userloadans) ? $loadans
746: : $userloadans;
747: } else {
748: $load = $loadans;
749: }
750: } else {
751: $load = $userloadans;
752: }
753:
754: if (($load =~ /\d/) && ($load < $lowest_load)) {
755: $spare_server = $try_server;
756: $lowest_load = $load;
757: }
758: return ($spare_server,$lowest_load);
759: }
760:
761: # --------------------------- ask offload servers if user already has a session
762: sub find_existing_session {
763: my ($udom,$uname) = @_;
764: foreach my $try_server (@{ $spareid{'primary'} },
765: @{ $spareid{'default'} }) {
766: return $try_server if (&has_user_session($try_server, $udom, $uname));
767: }
768: return;
769: }
770:
771: # -------------------------------- ask if server already has a session for user
772: sub has_user_session {
773: my ($lonid,$udom,$uname) = @_;
774: my $result = &reply(join(':','userhassession',
775: map {&escape($_)} ($udom,$uname)),$lonid);
776: return 1 if ($result eq 'ok');
777:
778: return 0;
779: }
780:
781: # --------------------------------------------- Try to change a user's password
782:
783: sub changepass {
784: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
785: $currentpass = &escape($currentpass);
786: $newpass = &escape($newpass);
787: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
788: $server);
789: if (! $answer) {
790: &logthis("No reply on password change request to $server ".
791: "by $uname in domain $udom.");
792: } elsif ($answer =~ "^ok") {
793: &logthis("$uname in $udom successfully changed their password ".
794: "on $server.");
795: } elsif ($answer =~ "^pwchange_failure") {
796: &logthis("$uname in $udom was unable to change their password ".
797: "on $server. The action was blocked by either lcpasswd ".
798: "or pwchange");
799: } elsif ($answer =~ "^non_authorized") {
800: &logthis("$uname in $udom did not get their password correct when ".
801: "attempting to change it on $server.");
802: } elsif ($answer =~ "^auth_mode_error") {
803: &logthis("$uname in $udom attempted to change their password despite ".
804: "not being locally or internally authenticated on $server.");
805: } elsif ($answer =~ "^unknown_user") {
806: &logthis("$uname in $udom attempted to change their password ".
807: "on $server but were unable to because $server is not ".
808: "their home server.");
809: } elsif ($answer =~ "^refused") {
810: &logthis("$server refused to change $uname in $udom password because ".
811: "it was sent an unencrypted request to change the password.");
812: }
813: return $answer;
814: }
815:
816: # ----------------------- Try to determine user's current authentication scheme
817:
818: sub queryauthenticate {
819: my ($uname,$udom)=@_;
820: my $uhome=&homeserver($uname,$udom);
821: if (!$uhome) {
822: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
823: return 'no_host';
824: }
825: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
826: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
827: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
828: }
829: return $answer;
830: }
831:
832: # --------- Try to authenticate user from domain's lib servers (first this one)
833:
834: sub authenticate {
835: my ($uname,$upass,$udom,$checkdefauth)=@_;
836: $upass=&escape($upass);
837: $uname= &LONCAPA::clean_username($uname);
838: my $uhome=&homeserver($uname,$udom,1);
839: my $newhome;
840: if ((!$uhome) || ($uhome eq 'no_host')) {
841: # Maybe the machine was offline and only re-appeared again recently?
842: &reconlonc();
843: # One more
844: $uhome=&homeserver($uname,$udom,1);
845: if (($uhome eq 'no_host') && $checkdefauth) {
846: if (defined(&domain($udom,'primary'))) {
847: $newhome=&domain($udom,'primary');
848: }
849: if ($newhome ne '') {
850: $uhome = $newhome;
851: }
852: }
853: if ((!$uhome) || ($uhome eq 'no_host')) {
854: &logthis("User $uname at $udom is unknown in authenticate");
855: return 'no_host';
856: }
857: }
858: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
859: if ($answer eq 'authorized') {
860: if ($newhome) {
861: &logthis("User $uname at $udom authorized by $uhome, but needs account");
862: return 'no_account_on_host';
863: } else {
864: &logthis("User $uname at $udom authorized by $uhome");
865: return $uhome;
866: }
867: }
868: if ($answer eq 'non_authorized') {
869: &logthis("User $uname at $udom rejected by $uhome");
870: return 'no_host';
871: }
872: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
873: return 'no_host';
874: }
875:
876: # ---------------------- Find the homebase for a user from domain's lib servers
877:
878: my %homecache;
879: sub homeserver {
880: my ($uname,$udom,$ignoreBadCache)=@_;
881: my $index="$uname:$udom";
882:
883: if (exists($homecache{$index})) { return $homecache{$index}; }
884:
885: my %servers = &get_servers($udom,'library');
886: foreach my $tryserver (keys(%servers)) {
887: next if ($ignoreBadCache ne 'true' &&
888: exists($badServerCache{$tryserver}));
889:
890: my $answer=reply("home:$udom:$uname",$tryserver);
891: if ($answer eq 'found') {
892: delete($badServerCache{$tryserver});
893: return $homecache{$index}=$tryserver;
894: } elsif ($answer eq 'no_host') {
895: $badServerCache{$tryserver}=1;
896: }
897: }
898: return 'no_host';
899: }
900:
901: # ------------------------------------- Find the usernames behind a list of IDs
902:
903: sub idget {
904: my ($udom,@ids)=@_;
905: my %returnhash=();
906:
907: my %servers = &get_servers($udom,'library');
908: foreach my $tryserver (keys(%servers)) {
909: my $idlist=join('&',@ids);
910: $idlist=~tr/A-Z/a-z/;
911: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
912: my @answer=();
913: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
914: @answer=split(/\&/,$reply);
915: } ;
916: my $i;
917: for ($i=0;$i<=$#ids;$i++) {
918: if ($answer[$i]) {
919: $returnhash{$ids[$i]}=$answer[$i];
920: }
921: }
922: }
923: return %returnhash;
924: }
925:
926: # ------------------------------------- Find the IDs behind a list of usernames
927:
928: sub idrget {
929: my ($udom,@unames)=@_;
930: my %returnhash=();
931: foreach my $uname (@unames) {
932: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
933: }
934: return %returnhash;
935: }
936:
937: # ------------------------------- Store away a list of names and associated IDs
938:
939: sub idput {
940: my ($udom,%ids)=@_;
941: my %servers=();
942: foreach my $uname (keys(%ids)) {
943: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
944: my $uhom=&homeserver($uname,$udom);
945: if ($uhom ne 'no_host') {
946: my $id=&escape($ids{$uname});
947: $id=~tr/A-Z/a-z/;
948: my $esc_unam=&escape($uname);
949: if ($servers{$uhom}) {
950: $servers{$uhom}.='&'.$id.'='.$esc_unam;
951: } else {
952: $servers{$uhom}=$id.'='.$esc_unam;
953: }
954: }
955: }
956: foreach my $server (keys(%servers)) {
957: &critical('idput:'.$udom.':'.$servers{$server},$server);
958: }
959: }
960:
961: # ------------------------------------------- get items from domain db files
962:
963: sub get_dom {
964: my ($namespace,$storearr,$udom,$uhome)=@_;
965: my $items='';
966: foreach my $item (@$storearr) {
967: $items.=&escape($item).'&';
968: }
969: $items=~s/\&$//;
970: if (!$udom) {
971: $udom=$env{'user.domain'};
972: if (defined(&domain($udom,'primary'))) {
973: $uhome=&domain($udom,'primary');
974: } else {
975: undef($uhome);
976: }
977: } else {
978: if (!$uhome) {
979: if (defined(&domain($udom,'primary'))) {
980: $uhome=&domain($udom,'primary');
981: }
982: }
983: }
984: if ($udom && $uhome && ($uhome ne 'no_host')) {
985: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
986: my %returnhash;
987: if ($rep eq '' || $rep =~ /^error: 2 /) {
988: return %returnhash;
989: }
990: my @pairs=split(/\&/,$rep);
991: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
992: return @pairs;
993: }
994: my $i=0;
995: foreach my $item (@$storearr) {
996: $returnhash{$item}=&thaw_unescape($pairs[$i]);
997: $i++;
998: }
999: return %returnhash;
1000: } else {
1001: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1002: }
1003: }
1004:
1005: # -------------------------------------------- put items in domain db files
1006:
1007: sub put_dom {
1008: my ($namespace,$storehash,$udom,$uhome)=@_;
1009: if (!$udom) {
1010: $udom=$env{'user.domain'};
1011: if (defined(&domain($udom,'primary'))) {
1012: $uhome=&domain($udom,'primary');
1013: } else {
1014: undef($uhome);
1015: }
1016: } else {
1017: if (!$uhome) {
1018: if (defined(&domain($udom,'primary'))) {
1019: $uhome=&domain($udom,'primary');
1020: }
1021: }
1022: }
1023: if ($udom && $uhome && ($uhome ne 'no_host')) {
1024: my $items='';
1025: foreach my $item (keys(%$storehash)) {
1026: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1027: }
1028: $items=~s/\&$//;
1029: return &reply("putdom:$udom:$namespace:$items",$uhome);
1030: } else {
1031: &logthis("put_dom failed - no homeserver and/or domain");
1032: }
1033: }
1034:
1035: sub retrieve_inst_usertypes {
1036: my ($udom) = @_;
1037: my (%returnhash,@order);
1038: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1039: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1040: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1041: %returnhash = %{$domdefs{'inststatustypes'}};
1042: @order = @{$domdefs{'inststatusorder'}};
1043: } else {
1044: if (defined(&domain($udom,'primary'))) {
1045: my $uhome=&domain($udom,'primary');
1046: my $rep=&reply("inst_usertypes:$udom",$uhome);
1047: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1048: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1049: return (\%returnhash,\@order);
1050: }
1051: my ($hashitems,$orderitems) = split(/:/,$rep);
1052: my @pairs=split(/\&/,$hashitems);
1053: foreach my $item (@pairs) {
1054: my ($key,$value)=split(/=/,$item,2);
1055: $key = &unescape($key);
1056: next if ($key =~ /^error: 2 /);
1057: $returnhash{$key}=&thaw_unescape($value);
1058: }
1059: my @esc_order = split(/\&/,$orderitems);
1060: foreach my $item (@esc_order) {
1061: push(@order,&unescape($item));
1062: }
1063: } else {
1064: &logthis("get_dom failed - no primary domain server for $udom");
1065: }
1066: }
1067: return (\%returnhash,\@order);
1068: }
1069:
1070: sub is_domainimage {
1071: my ($url) = @_;
1072: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1073: if (&domain($1) ne '') {
1074: return '1';
1075: }
1076: }
1077: return;
1078: }
1079:
1080: sub inst_directory_query {
1081: my ($srch) = @_;
1082: my $udom = $srch->{'srchdomain'};
1083: my %results;
1084: my $homeserver = &domain($udom,'primary');
1085: my $outcome;
1086: if ($homeserver ne '') {
1087: my $queryid=&reply("querysend:instdirsearch:".
1088: &escape($srch->{'srchby'}).':'.
1089: &escape($srch->{'srchterm'}).':'.
1090: &escape($srch->{'srchtype'}),$homeserver);
1091: my $host=&hostname($homeserver);
1092: if ($queryid !~/^\Q$host\E\_/) {
1093: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1094: return;
1095: }
1096: my $response = &get_query_reply($queryid);
1097: my $maxtries = 5;
1098: my $tries = 1;
1099: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1100: $response = &get_query_reply($queryid);
1101: $tries ++;
1102: }
1103:
1104: if (!&error($response) && $response ne 'refused') {
1105: if ($response eq 'unavailable') {
1106: $outcome = $response;
1107: } else {
1108: $outcome = 'ok';
1109: my @matches = split(/\n/,$response);
1110: foreach my $match (@matches) {
1111: my ($key,$value) = split(/=/,$match);
1112: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1113: }
1114: }
1115: }
1116: }
1117: return ($outcome,%results);
1118: }
1119:
1120: sub usersearch {
1121: my ($srch) = @_;
1122: my $dom = $srch->{'srchdomain'};
1123: my %results;
1124: my %libserv = &all_library();
1125: my $query = 'usersearch';
1126: foreach my $tryserver (keys(%libserv)) {
1127: if (&host_domain($tryserver) eq $dom) {
1128: my $host=&hostname($tryserver);
1129: my $queryid=
1130: &reply("querysend:".&escape($query).':'.
1131: &escape($srch->{'srchby'}).':'.
1132: &escape($srch->{'srchtype'}).':'.
1133: &escape($srch->{'srchterm'}),$tryserver);
1134: if ($queryid !~/^\Q$host\E\_/) {
1135: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1136: next;
1137: }
1138: my $reply = &get_query_reply($queryid);
1139: my $maxtries = 1;
1140: my $tries = 1;
1141: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1142: $reply = &get_query_reply($queryid);
1143: $tries ++;
1144: }
1145: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1146: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1147: } else {
1148: my @matches;
1149: if ($reply =~ /\n/) {
1150: @matches = split(/\n/,$reply);
1151: } else {
1152: @matches = split(/\&/,$reply);
1153: }
1154: foreach my $match (@matches) {
1155: my ($uname,$udom,%userhash);
1156: foreach my $entry (split(/:/,$match)) {
1157: my ($key,$value) =
1158: map {&unescape($_);} split(/=/,$entry);
1159: $userhash{$key} = $value;
1160: if ($key eq 'username') {
1161: $uname = $value;
1162: } elsif ($key eq 'domain') {
1163: $udom = $value;
1164: }
1165: }
1166: $results{$uname.':'.$udom} = \%userhash;
1167: }
1168: }
1169: }
1170: }
1171: return %results;
1172: }
1173:
1174: sub get_instuser {
1175: my ($udom,$uname,$id) = @_;
1176: my $homeserver = &domain($udom,'primary');
1177: my ($outcome,%results);
1178: if ($homeserver ne '') {
1179: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1180: &escape($id).':'.&escape($udom),$homeserver);
1181: my $host=&hostname($homeserver);
1182: if ($queryid !~/^\Q$host\E\_/) {
1183: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1184: return;
1185: }
1186: my $response = &get_query_reply($queryid);
1187: my $maxtries = 5;
1188: my $tries = 1;
1189: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1190: $response = &get_query_reply($queryid);
1191: $tries ++;
1192: }
1193: if (!&error($response) && $response ne 'refused') {
1194: if ($response eq 'unavailable') {
1195: $outcome = $response;
1196: } else {
1197: $outcome = 'ok';
1198: my @matches = split(/\n/,$response);
1199: foreach my $match (@matches) {
1200: my ($key,$value) = split(/=/,$match);
1201: $results{&unescape($key)} = &thaw_unescape($value);
1202: }
1203: }
1204: }
1205: }
1206: my %userinfo;
1207: if (ref($results{$uname}) eq 'HASH') {
1208: %userinfo = %{$results{$uname}};
1209: }
1210: return ($outcome,%userinfo);
1211: }
1212:
1213: sub inst_rulecheck {
1214: my ($udom,$uname,$id,$item,$rules) = @_;
1215: my %returnhash;
1216: if ($udom ne '') {
1217: if (ref($rules) eq 'ARRAY') {
1218: @{$rules} = map {&escape($_);} (@{$rules});
1219: my $rulestr = join(':',@{$rules});
1220: my $homeserver=&domain($udom,'primary');
1221: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1222: my $response;
1223: if ($item eq 'username') {
1224: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1225: ':'.&escape($uname).':'.$rulestr,
1226: $homeserver));
1227: } elsif ($item eq 'id') {
1228: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1229: ':'.&escape($id).':'.$rulestr,
1230: $homeserver));
1231: } elsif ($item eq 'selfcreate') {
1232: $response=&unescape(&reply('instselfcreatecheck:'.
1233: &escape($udom).':'.&escape($uname).
1234: ':'.$rulestr,$homeserver));
1235: }
1236: if ($response ne 'refused') {
1237: my @pairs=split(/\&/,$response);
1238: foreach my $item (@pairs) {
1239: my ($key,$value)=split(/=/,$item,2);
1240: $key = &unescape($key);
1241: next if ($key =~ /^error: 2 /);
1242: $returnhash{$key}=&thaw_unescape($value);
1243: }
1244: }
1245: }
1246: }
1247: }
1248: return %returnhash;
1249: }
1250:
1251: sub inst_userrules {
1252: my ($udom,$check) = @_;
1253: my (%ruleshash,@ruleorder);
1254: if ($udom ne '') {
1255: my $homeserver=&domain($udom,'primary');
1256: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1257: my $response;
1258: if ($check eq 'id') {
1259: $response=&reply('instidrules:'.&escape($udom),
1260: $homeserver);
1261: } elsif ($check eq 'email') {
1262: $response=&reply('instemailrules:'.&escape($udom),
1263: $homeserver);
1264: } else {
1265: $response=&reply('instuserrules:'.&escape($udom),
1266: $homeserver);
1267: }
1268: if (($response ne 'refused') && ($response ne 'error') &&
1269: ($response ne 'unknown_cmd') &&
1270: ($response ne 'no_such_host')) {
1271: my ($hashitems,$orderitems) = split(/:/,$response);
1272: my @pairs=split(/\&/,$hashitems);
1273: foreach my $item (@pairs) {
1274: my ($key,$value)=split(/=/,$item,2);
1275: $key = &unescape($key);
1276: next if ($key =~ /^error: 2 /);
1277: $ruleshash{$key}=&thaw_unescape($value);
1278: }
1279: my @esc_order = split(/\&/,$orderitems);
1280: foreach my $item (@esc_order) {
1281: push(@ruleorder,&unescape($item));
1282: }
1283: }
1284: }
1285: }
1286: return (\%ruleshash,\@ruleorder);
1287: }
1288:
1289: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1290:
1291: sub get_domain_defaults {
1292: my ($domain) = @_;
1293: my $cachetime = 60*60*24;
1294: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1295: if (defined($cached)) {
1296: if (ref($result) eq 'HASH') {
1297: return %{$result};
1298: }
1299: }
1300: my %domdefaults;
1301: my %domconfig =
1302: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1303: 'requestcourses','inststatus'],$domain);
1304: if (ref($domconfig{'defaults'}) eq 'HASH') {
1305: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1306: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1307: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1308: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1309: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1310: } else {
1311: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1312: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1313: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1314: }
1315: if (ref($domconfig{'quotas'}) eq 'HASH') {
1316: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1317: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1318: } else {
1319: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1320: }
1321: my @usertools = ('aboutme','blog','portfolio');
1322: foreach my $item (@usertools) {
1323: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1324: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1325: }
1326: }
1327: }
1328: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1329: foreach my $item ('official','unofficial','community') {
1330: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1331: }
1332: }
1333: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1334: foreach my $item ('inststatustypes','inststatusorder') {
1335: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1336: }
1337: }
1338: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1339: $cachetime);
1340: return %domdefaults;
1341: }
1342:
1343: # --------------------------------------------------- Assign a key to a student
1344:
1345: sub assign_access_key {
1346: #
1347: # a valid key looks like uname:udom#comments
1348: # comments are being appended
1349: #
1350: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1351: $kdom=
1352: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1353: $knum=
1354: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1355: $cdom=
1356: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1357: $cnum=
1358: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1359: $udom=$env{'user.name'} unless (defined($udom));
1360: $uname=$env{'user.domain'} unless (defined($uname));
1361: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1362: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1363: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1364: # assigned to this person
1365: # - this should not happen,
1366: # unless something went wrong
1367: # the first time around
1368: # ready to assign
1369: $logentry=$1.'; '.$logentry;
1370: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1371: $kdom,$knum) eq 'ok') {
1372: # key now belongs to user
1373: my $envkey='key.'.$cdom.'_'.$cnum;
1374: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1375: &appenv({'environment.'.$envkey => $ckey});
1376: return 'ok';
1377: } else {
1378: return
1379: 'error: Count not permanently assign key, will need to be re-entered later.';
1380: }
1381: } else {
1382: return 'error: Could not assign key, try again later.';
1383: }
1384: } elsif (!$existing{$ckey}) {
1385: # the key does not exist
1386: return 'error: The key does not exist';
1387: } else {
1388: # the key is somebody else's
1389: return 'error: The key is already in use';
1390: }
1391: }
1392:
1393: # ------------------------------------------ put an additional comment on a key
1394:
1395: sub comment_access_key {
1396: #
1397: # a valid key looks like uname:udom#comments
1398: # comments are being appended
1399: #
1400: my ($ckey,$cdom,$cnum,$logentry)=@_;
1401: $cdom=
1402: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1403: $cnum=
1404: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1405: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1406: if ($existing{$ckey}) {
1407: $existing{$ckey}.='; '.$logentry;
1408: # ready to assign
1409: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1410: $cdom,$cnum) eq 'ok') {
1411: return 'ok';
1412: } else {
1413: return 'error: Count not store comment.';
1414: }
1415: } else {
1416: # the key does not exist
1417: return 'error: The key does not exist';
1418: }
1419: }
1420:
1421: # ------------------------------------------------------ Generate a set of keys
1422:
1423: sub generate_access_keys {
1424: my ($number,$cdom,$cnum,$logentry)=@_;
1425: $cdom=
1426: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1427: $cnum=
1428: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1429: unless (&allowed('mky',$cdom)) { return 0; }
1430: unless (($cdom) && ($cnum)) { return 0; }
1431: if ($number>10000) { return 0; }
1432: sleep(2); # make sure don't get same seed twice
1433: srand(time()^($$+($$<<15))); # from "Programming Perl"
1434: my $total=0;
1435: for (my $i=1;$i<=$number;$i++) {
1436: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1437: sprintf("%lx",int(100000*rand)).'-'.
1438: sprintf("%lx",int(100000*rand));
1439: $newkey=~s/1/g/g; # folks mix up 1 and l
1440: $newkey=~s/0/h/g; # and also 0 and O
1441: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1442: if ($existing{$newkey}) {
1443: $i--;
1444: } else {
1445: if (&put('accesskeys',
1446: { $newkey => '# generated '.localtime().
1447: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1448: '; '.$logentry },
1449: $cdom,$cnum) eq 'ok') {
1450: $total++;
1451: }
1452: }
1453: }
1454: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1455: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1456: return $total;
1457: }
1458:
1459: # ------------------------------------------------------- Validate an accesskey
1460:
1461: sub validate_access_key {
1462: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1463: $cdom=
1464: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1465: $cnum=
1466: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1467: $udom=$env{'user.domain'} unless (defined($udom));
1468: $uname=$env{'user.name'} unless (defined($uname));
1469: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1470: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1471: }
1472:
1473: # ------------------------------------- Find the section of student in a course
1474: sub devalidate_getsection_cache {
1475: my ($udom,$unam,$courseid)=@_;
1476: my $hashid="$udom:$unam:$courseid";
1477: &devalidate_cache_new('getsection',$hashid);
1478: }
1479:
1480: sub courseid_to_courseurl {
1481: my ($courseid) = @_;
1482: #already url style courseid
1483: return $courseid if ($courseid =~ m{^/});
1484:
1485: if (exists($env{'course.'.$courseid.'.num'})) {
1486: my $cnum = $env{'course.'.$courseid.'.num'};
1487: my $cdom = $env{'course.'.$courseid.'.domain'};
1488: return "/$cdom/$cnum";
1489: }
1490:
1491: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1492: if (exists($courseinfo{'num'})) {
1493: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1494: }
1495:
1496: return undef;
1497: }
1498:
1499: sub getsection {
1500: my ($udom,$unam,$courseid)=@_;
1501: my $cachetime=1800;
1502:
1503: my $hashid="$udom:$unam:$courseid";
1504: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1505: if (defined($cached)) { return $result; }
1506:
1507: my %Pending;
1508: my %Expired;
1509: #
1510: # Each role can either have not started yet (pending), be active,
1511: # or have expired.
1512: #
1513: # If there is an active role, we are done.
1514: #
1515: # If there is more than one role which has not started yet,
1516: # choose the one which will start sooner
1517: # If there is one role which has not started yet, return it.
1518: #
1519: # If there is more than one expired role, choose the one which ended last.
1520: # If there is a role which has expired, return it.
1521: #
1522: $courseid = &courseid_to_courseurl($courseid);
1523: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1524: foreach my $key (keys(%roleshash)) {
1525: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1526: my $section=$1;
1527: if ($key eq $courseid.'_st') { $section=''; }
1528: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1529: my $now=time;
1530: if (defined($end) && $end && ($now > $end)) {
1531: $Expired{$end}=$section;
1532: next;
1533: }
1534: if (defined($start) && $start && ($now < $start)) {
1535: $Pending{$start}=$section;
1536: next;
1537: }
1538: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1539: }
1540: #
1541: # Presumedly there will be few matching roles from the above
1542: # loop and the sorting time will be negligible.
1543: if (scalar(keys(%Pending))) {
1544: my ($time) = sort {$a <=> $b} keys(%Pending);
1545: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1546: }
1547: if (scalar(keys(%Expired))) {
1548: my @sorted = sort {$a <=> $b} keys(%Expired);
1549: my $time = pop(@sorted);
1550: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1551: }
1552: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1553: }
1554:
1555: sub save_cache {
1556: &purge_remembered();
1557: #&Apache::loncommon::validate_page();
1558: undef(%env);
1559: undef($env_loaded);
1560: }
1561:
1562: my $to_remember=-1;
1563: my %remembered;
1564: my %accessed;
1565: my $kicks=0;
1566: my $hits=0;
1567: sub make_key {
1568: my ($name,$id) = @_;
1569: if (length($id) > 65
1570: && length(&escape($id)) > 200) {
1571: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1572: }
1573: return &escape($name.':'.$id);
1574: }
1575:
1576: sub devalidate_cache_new {
1577: my ($name,$id,$debug) = @_;
1578: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1579: $id=&make_key($name,$id);
1580: $memcache->delete($id);
1581: delete($remembered{$id});
1582: delete($accessed{$id});
1583: }
1584:
1585: sub is_cached_new {
1586: my ($name,$id,$debug) = @_;
1587: $id=&make_key($name,$id);
1588: if (exists($remembered{$id})) {
1589: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1590: $accessed{$id}=[&gettimeofday()];
1591: $hits++;
1592: return ($remembered{$id},1);
1593: }
1594: my $value = $memcache->get($id);
1595: if (!(defined($value))) {
1596: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1597: return (undef,undef);
1598: }
1599: if ($value eq '__undef__') {
1600: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1601: $value=undef;
1602: }
1603: &make_room($id,$value,$debug);
1604: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1605: return ($value,1);
1606: }
1607:
1608: sub do_cache_new {
1609: my ($name,$id,$value,$time,$debug) = @_;
1610: $id=&make_key($name,$id);
1611: my $setvalue=$value;
1612: if (!defined($setvalue)) {
1613: $setvalue='__undef__';
1614: }
1615: if (!defined($time) ) {
1616: $time=600;
1617: }
1618: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1619: my $result = $memcache->set($id,$setvalue,$time);
1620: if (! $result) {
1621: &logthis("caching of id -> $id failed");
1622: $memcache->disconnect_all();
1623: }
1624: # need to make a copy of $value
1625: &make_room($id,$value,$debug);
1626: return $value;
1627: }
1628:
1629: sub make_room {
1630: my ($id,$value,$debug)=@_;
1631:
1632: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1633: : $value;
1634: if ($to_remember<0) { return; }
1635: $accessed{$id}=[&gettimeofday()];
1636: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1637: my $to_kick;
1638: my $max_time=0;
1639: foreach my $other (keys(%accessed)) {
1640: if (&tv_interval($accessed{$other}) > $max_time) {
1641: $to_kick=$other;
1642: $max_time=&tv_interval($accessed{$other});
1643: }
1644: }
1645: delete($remembered{$to_kick});
1646: delete($accessed{$to_kick});
1647: $kicks++;
1648: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1649: return;
1650: }
1651:
1652: sub purge_remembered {
1653: #&logthis("Tossing ".scalar(keys(%remembered)));
1654: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1655: undef(%remembered);
1656: undef(%accessed);
1657: }
1658: # ------------------------------------- Read an entry from a user's environment
1659:
1660: sub userenvironment {
1661: my ($udom,$unam,@what)=@_;
1662: my $items;
1663: foreach my $item (@what) {
1664: $items.=&escape($item).'&';
1665: }
1666: $items=~s/\&$//;
1667: my %returnhash=();
1668: my @answer=split(/\&/,
1669: &reply('get:'.$udom.':'.$unam.':environment:'.$items,
1670: &homeserver($unam,$udom)));
1671: my $i;
1672: for ($i=0;$i<=$#what;$i++) {
1673: $returnhash{$what[$i]}=&unescape($answer[$i]);
1674: }
1675: return %returnhash;
1676: }
1677:
1678: # ---------------------------------------------------------- Get a studentphoto
1679: sub studentphoto {
1680: my ($udom,$unam,$ext) = @_;
1681: my $home=&Apache::lonnet::homeserver($unam,$udom);
1682: if (defined($env{'request.course.id'})) {
1683: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1684: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1685: return(&retrievestudentphoto($udom,$unam,$ext));
1686: } else {
1687: my ($result,$perm_reqd)=
1688: &Apache::lonnet::auto_photo_permission($unam,$udom);
1689: if ($result eq 'ok') {
1690: if (!($perm_reqd eq 'yes')) {
1691: return(&retrievestudentphoto($udom,$unam,$ext));
1692: }
1693: }
1694: }
1695: }
1696: } else {
1697: my ($result,$perm_reqd) =
1698: &Apache::lonnet::auto_photo_permission($unam,$udom);
1699: if ($result eq 'ok') {
1700: if (!($perm_reqd eq 'yes')) {
1701: return(&retrievestudentphoto($udom,$unam,$ext));
1702: }
1703: }
1704: }
1705: return '/adm/lonKaputt/lonlogo_broken.gif';
1706: }
1707:
1708: sub retrievestudentphoto {
1709: my ($udom,$unam,$ext,$type) = @_;
1710: my $home=&Apache::lonnet::homeserver($unam,$udom);
1711: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1712: if ($ret eq 'ok') {
1713: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1714: if ($type eq 'thumbnail') {
1715: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1716: }
1717: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1718: return $tokenurl;
1719: } else {
1720: if ($type eq 'thumbnail') {
1721: return '/adm/lonKaputt/genericstudent_tn.gif';
1722: } else {
1723: return '/adm/lonKaputt/lonlogo_broken.gif';
1724: }
1725: }
1726: }
1727:
1728: # -------------------------------------------------------------------- New chat
1729:
1730: sub chatsend {
1731: my ($newentry,$anon,$group)=@_;
1732: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1733: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1734: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1735: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1736: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1737: &escape($newentry)).':'.$group,$chome);
1738: }
1739:
1740: # ------------------------------------------ Find current version of a resource
1741:
1742: sub getversion {
1743: my $fname=&clutter(shift);
1744: unless ($fname=~/^\/res\//) { return -1; }
1745: return ¤tversion(&filelocation('',$fname));
1746: }
1747:
1748: sub currentversion {
1749: my $fname=shift;
1750: my ($result,$cached)=&is_cached_new('resversion',$fname);
1751: if (defined($cached)) { return $result; }
1752: my $author=$fname;
1753: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1754: my ($udom,$uname)=split(/\//,$author);
1755: my $home=homeserver($uname,$udom);
1756: if ($home eq 'no_host') {
1757: return -1;
1758: }
1759: my $answer=reply("currentversion:$fname",$home);
1760: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1761: return -1;
1762: }
1763: return &do_cache_new('resversion',$fname,$answer,600);
1764: }
1765:
1766: # ----------------------------- Subscribe to a resource, return URL if possible
1767:
1768: sub subscribe {
1769: my $fname=shift;
1770: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1771: $fname=~s/[\n\r]//g;
1772: my $author=$fname;
1773: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1774: my ($udom,$uname)=split(/\//,$author);
1775: my $home=homeserver($uname,$udom);
1776: if ($home eq 'no_host') {
1777: return 'not_found';
1778: }
1779: my $answer=reply("sub:$fname",$home);
1780: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1781: $answer.=' by '.$home;
1782: }
1783: return $answer;
1784: }
1785:
1786: # -------------------------------------------------------------- Replicate file
1787:
1788: sub repcopy {
1789: my $filename=shift;
1790: $filename=~s/\/+/\//g;
1791: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1792: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1793: if ($filename=~m|^/home/httpd/html/userfiles/| or
1794: $filename=~m -^/*(uploaded|editupload)/-) {
1795: return &repcopy_userfile($filename);
1796: }
1797: $filename=~s/[\n\r]//g;
1798: my $transname="$filename.in.transfer";
1799: # FIXME: this should flock
1800: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1801: my $remoteurl=subscribe($filename);
1802: if ($remoteurl =~ /^con_lost by/) {
1803: &logthis("Subscribe returned $remoteurl: $filename");
1804: return 'unavailable';
1805: } elsif ($remoteurl eq 'not_found') {
1806: #&logthis("Subscribe returned not_found: $filename");
1807: return 'not_found';
1808: } elsif ($remoteurl =~ /^rejected by/) {
1809: &logthis("Subscribe returned $remoteurl: $filename");
1810: return 'forbidden';
1811: } elsif ($remoteurl eq 'directory') {
1812: return 'ok';
1813: } else {
1814: my $author=$filename;
1815: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1816: my ($udom,$uname)=split(/\//,$author);
1817: my $home=homeserver($uname,$udom);
1818: unless ($home eq $perlvar{'lonHostID'}) {
1819: my @parts=split(/\//,$filename);
1820: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1821: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1822: &logthis("Malconfiguration for replication: $filename");
1823: return 'bad_request';
1824: }
1825: my $count;
1826: for ($count=5;$count<$#parts;$count++) {
1827: $path.="/$parts[$count]";
1828: if ((-e $path)!=1) {
1829: mkdir($path,0777);
1830: }
1831: }
1832: my $ua=new LWP::UserAgent;
1833: my $request=new HTTP::Request('GET',"$remoteurl");
1834: my $response=$ua->request($request,$transname);
1835: if ($response->is_error()) {
1836: unlink($transname);
1837: my $message=$response->status_line;
1838: &logthis("<font color=\"blue\">WARNING:"
1839: ." LWP get: $message: $filename</font>");
1840: return 'unavailable';
1841: } else {
1842: if ($remoteurl!~/\.meta$/) {
1843: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1844: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1845: if ($mresponse->is_error()) {
1846: unlink($filename.'.meta');
1847: &logthis(
1848: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1849: }
1850: }
1851: rename($transname,$filename);
1852: return 'ok';
1853: }
1854: }
1855: }
1856: }
1857:
1858: # ------------------------------------------------ Get server side include body
1859: sub ssi_body {
1860: my ($filelink,%form)=@_;
1861: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1862: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1863: }
1864: my $output='';
1865: my $response;
1866: if ($filelink=~/^https?\:/) {
1867: ($output,$response)=&externalssi($filelink);
1868: } else {
1869: $filelink .= $filelink=~/\?/ ? '&' : '?';
1870: $filelink .= 'inhibitmenu=yes';
1871: ($output,$response)=&ssi($filelink,%form);
1872: }
1873: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1874: $output=~s/^.*?\<body[^\>]*\>//si;
1875: $output=~s/\<\/body\s*\>.*?$//si;
1876: if (wantarray) {
1877: return ($output, $response);
1878: } else {
1879: return $output;
1880: }
1881: }
1882:
1883: # --------------------------------------------------------- Server Side Include
1884:
1885: sub absolute_url {
1886: my ($host_name) = @_;
1887: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1888: if ($host_name eq '') {
1889: $host_name = $ENV{'SERVER_NAME'};
1890: }
1891: return $protocol.$host_name;
1892: }
1893:
1894: #
1895: # Server side include.
1896: # Parameters:
1897: # fn Possibly encrypted resource name/id.
1898: # form Hash that describes how the rendering should be done
1899: # and other things.
1900: # Returns:
1901: # Scalar context: The content of the response.
1902: # Array context: 2 element list of the content and the full response object.
1903: #
1904: sub ssi {
1905:
1906: my ($fn,%form)=@_;
1907: my $ua=new LWP::UserAgent;
1908: my $request;
1909:
1910: $form{'no_update_last_known'}=1;
1911: &Apache::lonenc::check_encrypt(\$fn);
1912: if (%form) {
1913: $request=new HTTP::Request('POST',&absolute_url().$fn);
1914: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
1915: } else {
1916: $request=new HTTP::Request('GET',&absolute_url().$fn);
1917: }
1918:
1919: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1920: my $response=$ua->request($request);
1921:
1922: if (wantarray) {
1923: return ($response->content, $response);
1924: } else {
1925: return $response->content;
1926: }
1927: }
1928:
1929: sub externalssi {
1930: my ($url)=@_;
1931: my $ua=new LWP::UserAgent;
1932: my $request=new HTTP::Request('GET',$url);
1933: my $response=$ua->request($request);
1934: if (wantarray) {
1935: return ($response->content, $response);
1936: } else {
1937: return $response->content;
1938: }
1939: }
1940:
1941: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1942:
1943: sub allowuploaded {
1944: my ($srcurl,$url)=@_;
1945: $url=&clutter(&declutter($url));
1946: my $dir=$url;
1947: $dir=~s/\/[^\/]+$//;
1948: my %httpref=();
1949: my $httpurl=&hreflocation('',$url);
1950: $httpref{'httpref.'.$httpurl}=$srcurl;
1951: &Apache::lonnet::appenv(\%httpref);
1952: }
1953:
1954: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1955: # input: action, courseID, current domain, intended
1956: # path to file, source of file, instruction to parse file for objects,
1957: # ref to hash for embedded objects,
1958: # ref to hash for codebase of java objects.
1959: #
1960: # output: url to file (if action was uploaddoc),
1961: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1962: #
1963: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1964: # course.
1965: #
1966: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1967: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1968: # course's home server.
1969: #
1970: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1971: # be copied from $source (current location) to
1972: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1973: # and will then be copied to
1974: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1975: # course's home server.
1976: #
1977: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1978: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1979: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1980: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1981: # in course's home server.
1982: #
1983:
1984: sub process_coursefile {
1985: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1986: my $fetchresult;
1987: my $home=&homeserver($docuname,$docudom);
1988: if ($action eq 'propagate') {
1989: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1990: $home);
1991: } else {
1992: my $fpath = '';
1993: my $fname = $file;
1994: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1995: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1996: my $filepath = &build_filepath($fpath);
1997: if ($action eq 'copy') {
1998: if ($source eq '') {
1999: $fetchresult = 'no source file';
2000: return $fetchresult;
2001: } else {
2002: my $destination = $filepath.'/'.$fname;
2003: rename($source,$destination);
2004: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2005: $home);
2006: }
2007: } elsif ($action eq 'uploaddoc') {
2008: open(my $fh,'>'.$filepath.'/'.$fname);
2009: print $fh $env{'form.'.$source};
2010: close($fh);
2011: if ($parser eq 'parse') {
2012: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2013: unless ($parse_result eq 'ok') {
2014: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2015: }
2016: }
2017: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2018: $home);
2019: if ($fetchresult eq 'ok') {
2020: return '/uploaded/'.$fpath.'/'.$fname;
2021: } else {
2022: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2023: ' to host '.$home.': '.$fetchresult);
2024: return '/adm/notfound.html';
2025: }
2026: }
2027: }
2028: unless ( $fetchresult eq 'ok') {
2029: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2030: ' to host '.$home.': '.$fetchresult);
2031: }
2032: return $fetchresult;
2033: }
2034:
2035: sub build_filepath {
2036: my ($fpath) = @_;
2037: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2038: unless ($fpath eq '') {
2039: my @parts=split('/',$fpath);
2040: foreach my $part (@parts) {
2041: $filepath.= '/'.$part;
2042: if ((-e $filepath)!=1) {
2043: mkdir($filepath,0777);
2044: }
2045: }
2046: }
2047: return $filepath;
2048: }
2049:
2050: sub store_edited_file {
2051: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2052: my $file = $primary_url;
2053: $file =~ s#^/uploaded/$docudom/$docuname/##;
2054: my $fpath = '';
2055: my $fname = $file;
2056: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2057: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2058: my $filepath = &build_filepath($fpath);
2059: open(my $fh,'>'.$filepath.'/'.$fname);
2060: print $fh $content;
2061: close($fh);
2062: my $home=&homeserver($docuname,$docudom);
2063: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2064: $home);
2065: if ($$fetchresult eq 'ok') {
2066: return '/uploaded/'.$fpath.'/'.$fname;
2067: } else {
2068: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2069: ' to host '.$home.': '.$$fetchresult);
2070: return '/adm/notfound.html';
2071: }
2072: }
2073:
2074: sub clean_filename {
2075: my ($fname,$args)=@_;
2076: # Replace Windows backslashes by forward slashes
2077: $fname=~s/\\/\//g;
2078: if (!$args->{'keep_path'}) {
2079: # Get rid of everything but the actual filename
2080: $fname=~s/^.*\/([^\/]+)$/$1/;
2081: }
2082: # Replace spaces by underscores
2083: $fname=~s/\s+/\_/g;
2084: # Replace all other weird characters by nothing
2085: $fname=~s{[^/\w\.\-]}{}g;
2086: # Replace all .\d. sequences with _\d. so they no longer look like version
2087: # numbers
2088: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2089: return $fname;
2090: }
2091: #This Function check if a Image max 400px width and height 500px. If not then scale the image down
2092: sub resizeImage {
2093: my($img_url) = @_;
2094: my $ima = Image::Magick->new;
2095: $ima->Read($img_url);
2096: if($ima->Get('width') > 400)
2097: {
2098: my $factor = $ima->Get('width')/400;
2099: $ima->Scale( width=>400, height=>$ima->Get('height')/$factor );
2100: }
2101: if($ima->Get('height') > 500)
2102: {
2103: my $factor = $ima->Get('height')/500;
2104: $ima->Scale( width=>$ima->Get('width')/$factor, height=>500);
2105: }
2106:
2107: $ima->Write($img_url);
2108: }
2109:
2110: #Wrapper function for userphotoupload
2111: sub userphotoupload
2112: {
2113: my($formname,$subdir) = @_;
2114: $upload_photo_form = 1;
2115: return &userfileupload($formname,undef,$subdir);
2116: }
2117:
2118: # --------------- Take an uploaded file and put it into the userfiles directory
2119: # input: $formname - the contents of the file are in $env{"form.$formname"}
2120: # the desired filenam is in $env{"form.$formname.filename"}
2121: # $coursedoc - if true up to the current course
2122: # if false
2123: # $subdir - directory in userfile to store the file into
2124: # $parser - instruction to parse file for objects ($parser = parse)
2125: # $allfiles - reference to hash for embedded objects
2126: # $codebase - reference to hash for codebase of java objects
2127: # $desuname - username for permanent storage of uploaded file
2128: # $dsetudom - domain for permanaent storage of uploaded file
2129: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2130: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2131: #
2132: # output: url of file in userspace, or error: <message>
2133: # or /adm/notfound.html if failure to upload occurse
2134:
2135:
2136: sub userfileupload {
2137: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
2138: $destudom,$thumbwidth,$thumbheight)=@_;
2139: if (!defined($subdir)) { $subdir='unknown'; }
2140: my $fname=$env{'form.'.$formname.'.filename'};
2141: $fname=&clean_filename($fname);
2142: # See if there is anything left
2143: unless ($fname) { return 'error: no uploaded file'; }
2144: chop($env{'form.'.$formname});
2145: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2146: my $now = time;
2147: my $filepath = 'tmp/helprequests/'.$now;
2148: my @parts=split(/\//,$filepath);
2149: my $fullpath = $perlvar{'lonDaemons'};
2150: for (my $i=0;$i<@parts;$i++) {
2151: $fullpath .= '/'.$parts[$i];
2152: if ((-e $fullpath)!=1) {
2153: mkdir($fullpath,0777);
2154: }
2155: }
2156: open(my $fh,'>'.$fullpath.'/'.$fname);
2157: print $fh $env{'form.'.$formname};
2158: close($fh);
2159: return $fullpath.'/'.$fname;
2160: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2161: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2162: '_'.$env{'user.domain'}.'/pending';
2163: my @parts=split(/\//,$filepath);
2164: my $fullpath = $perlvar{'lonDaemons'};
2165: for (my $i=0;$i<@parts;$i++) {
2166: $fullpath .= '/'.$parts[$i];
2167: if ((-e $fullpath)!=1) {
2168: mkdir($fullpath,0777);
2169: }
2170: }
2171: open(my $fh,'>'.$fullpath.'/'.$fname);
2172: print $fh $env{'form.'.$formname};
2173: close($fh);
2174: return $fullpath.'/'.$fname;
2175: }
2176: if ($subdir eq 'scantron') {
2177: $fname = 'scantron_orig_'.$fname;
2178: } else {
2179: # Create the directory if not present
2180: $fname="$subdir/$fname";
2181: }
2182: if ($coursedoc) {
2183: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2184: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2185: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2186: return &finishuserfileupload($docuname,$docudom,
2187: $formname,$fname,$parser,$allfiles,
2188: $codebase,$thumbwidth,$thumbheight);
2189: } else {
2190: $fname=$env{'form.folder'}.'/'.$fname;
2191: return &process_coursefile('uploaddoc',$docuname,$docudom,
2192: $fname,$formname,$parser,
2193: $allfiles,$codebase);
2194: }
2195: } elsif (defined($destuname)) {
2196: my $docuname=$destuname;
2197: my $docudom=$destudom;
2198: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2199: $parser,$allfiles,$codebase,
2200: $thumbwidth,$thumbheight);
2201:
2202: } else {
2203: my $docuname=$env{'user.name'};
2204: my $docudom=$env{'user.domain'};
2205: if (exists($env{'form.group'})) {
2206: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2207: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2208: }
2209: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2210: $parser,$allfiles,$codebase,
2211: $thumbwidth,$thumbheight);
2212: }
2213: }
2214:
2215: sub finishuserfileupload {
2216: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2217: $thumbwidth,$thumbheight) = @_;
2218: my $path=$docudom.'/'.$docuname.'/';
2219: my $filepath=$perlvar{'lonDocRoot'};
2220:
2221: my ($fnamepath,$file,$fetchthumb);
2222: $file=$fname;
2223: if ($fname=~m|/|) {
2224: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2225: $path.=$fnamepath.'/';
2226: }
2227: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2228: my $count;
2229: for ($count=4;$count<=$#parts;$count++) {
2230: $filepath.="/$parts[$count]";
2231: if ((-e $filepath)!=1) {
2232: mkdir($filepath,0777);
2233: }
2234: }
2235:
2236: # Save the file
2237: {
2238: if (!open(FH,'>'.$filepath.'/'.$file)) {
2239: &logthis('Failed to create '.$filepath.'/'.$file);
2240: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2241: return '/adm/notfound.html';
2242: }
2243: if (!print FH ($env{'form.'.$formname})) {
2244: &logthis('Failed to write to '.$filepath.'/'.$file);
2245: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2246: return '/adm/notfound.html';
2247: }
2248: close(FH);
2249: if($upload_photo_form==1)
2250: {
2251: resizeImage($filepath.'/'.$file);
2252: $upload_photo_form = 0;
2253: }
2254: }
2255: if ($parser eq 'parse') {
2256: my $parse_result = &extract_embedded_items($filepath.'/'.$file,$allfiles,
2257: $codebase);
2258: unless ($parse_result eq 'ok') {
2259: &logthis('Failed to parse '.$filepath.$file.
2260: ' for embedded media: '.$parse_result);
2261: }
2262: }
2263: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2264: my $input = $filepath.'/'.$file;
2265: my $output = $filepath.'/'.'tn-'.$file;
2266: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2267: system("convert -sample $thumbsize $input $output");
2268: if (-e $filepath.'/'.'tn-'.$file) {
2269: $fetchthumb = 1;
2270: }
2271: }
2272:
2273: # Notify homeserver to grep it
2274: #
2275: my $docuhome=&homeserver($docuname,$docudom);
2276: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2277: if ($fetchresult eq 'ok') {
2278: if ($fetchthumb) {
2279: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2280: if ($thumbresult ne 'ok') {
2281: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2282: $docuhome.': '.$thumbresult);
2283: }
2284: }
2285: #
2286: # Return the URL to it
2287: return '/uploaded/'.$path.$file;
2288: } else {
2289: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2290: ': '.$fetchresult);
2291: return '/adm/notfound.html';
2292: }
2293: }
2294:
2295: sub extract_embedded_items {
2296: my ($fullpath,$allfiles,$codebase,$content) = @_;
2297: my @state = ();
2298: my %javafiles = (
2299: codebase => '',
2300: code => '',
2301: archive => ''
2302: );
2303: my %mediafiles = (
2304: src => '',
2305: movie => '',
2306: );
2307: my $p;
2308: if ($content) {
2309: $p = HTML::LCParser->new($content);
2310: } else {
2311: $p = HTML::LCParser->new($fullpath);
2312: }
2313: while (my $t=$p->get_token()) {
2314: if ($t->[0] eq 'S') {
2315: my ($tagname, $attr) = ($t->[1],$t->[2]);
2316: push(@state, $tagname);
2317: if (lc($tagname) eq 'allow') {
2318: &add_filetype($allfiles,$attr->{'src'},'src');
2319: }
2320: if (lc($tagname) eq 'img') {
2321: &add_filetype($allfiles,$attr->{'src'},'src');
2322: }
2323: if (lc($tagname) eq 'a') {
2324: &add_filetype($allfiles,$attr->{'href'},'href');
2325: }
2326: if (lc($tagname) eq 'script') {
2327: if ($attr->{'archive'} =~ /\.jar$/i) {
2328: &add_filetype($allfiles,$attr->{'archive'},'archive');
2329: } else {
2330: &add_filetype($allfiles,$attr->{'src'},'src');
2331: }
2332: }
2333: if (lc($tagname) eq 'link') {
2334: if (lc($attr->{'rel'}) eq 'stylesheet') {
2335: &add_filetype($allfiles,$attr->{'href'},'href');
2336: }
2337: }
2338: if (lc($tagname) eq 'object' ||
2339: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2340: foreach my $item (keys(%javafiles)) {
2341: $javafiles{$item} = '';
2342: }
2343: }
2344: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2345: my $name = lc($attr->{'name'});
2346: foreach my $item (keys(%javafiles)) {
2347: if ($name eq $item) {
2348: $javafiles{$item} = $attr->{'value'};
2349: last;
2350: }
2351: }
2352: foreach my $item (keys(%mediafiles)) {
2353: if ($name eq $item) {
2354: &add_filetype($allfiles, $attr->{'value'}, 'value');
2355: last;
2356: }
2357: }
2358: }
2359: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2360: foreach my $item (keys(%javafiles)) {
2361: if ($attr->{$item}) {
2362: $javafiles{$item} = $attr->{$item};
2363: last;
2364: }
2365: }
2366: foreach my $item (keys(%mediafiles)) {
2367: if ($attr->{$item}) {
2368: &add_filetype($allfiles,$attr->{$item},$item);
2369: last;
2370: }
2371: }
2372: }
2373: } elsif ($t->[0] eq 'E') {
2374: my ($tagname) = ($t->[1]);
2375: if ($javafiles{'codebase'} ne '') {
2376: $javafiles{'codebase'} .= '/';
2377: }
2378: if (lc($tagname) eq 'applet' ||
2379: lc($tagname) eq 'object' ||
2380: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2381: ) {
2382: foreach my $item (keys(%javafiles)) {
2383: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2384: my $file=$javafiles{'codebase'}.$javafiles{$item};
2385: &add_filetype($allfiles,$file,$item);
2386: }
2387: }
2388: }
2389: pop @state;
2390: }
2391: }
2392: return 'ok';
2393: }
2394:
2395: sub add_filetype {
2396: my ($allfiles,$file,$type)=@_;
2397: if (exists($allfiles->{$file})) {
2398: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2399: push(@{$allfiles->{$file}}, &escape($type));
2400: }
2401: } else {
2402: @{$allfiles->{$file}} = (&escape($type));
2403: }
2404: }
2405:
2406: sub removeuploadedurl {
2407: my ($url)=@_;
2408: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2409: return &removeuserfile($uname,$udom,$fname);
2410: }
2411:
2412: sub removeuserfile {
2413: my ($docuname,$docudom,$fname)=@_;
2414: my $home=&homeserver($docuname,$docudom);
2415: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2416: if ($result eq 'ok') {
2417: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2418: my $metafile = $fname.'.meta';
2419: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2420: my $url = "/uploaded/$docudom/$docuname/$fname";
2421: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2422: my $sqlresult =
2423: &update_portfolio_table($docuname,$docudom,$file,
2424: 'portfolio_metadata',$group,
2425: 'delete');
2426: }
2427: }
2428: return $result;
2429: }
2430:
2431: sub mkdiruserfile {
2432: my ($docuname,$docudom,$dir)=@_;
2433: my $home=&homeserver($docuname,$docudom);
2434: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2435: }
2436:
2437: sub renameuserfile {
2438: my ($docuname,$docudom,$old,$new)=@_;
2439: my $home=&homeserver($docuname,$docudom);
2440: my $result = &reply("renameuserfile:$docudom:$docuname:".
2441: &escape("$old").':'.&escape("$new"),$home);
2442: if ($result eq 'ok') {
2443: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2444: my $oldmeta = $old.'.meta';
2445: my $newmeta = $new.'.meta';
2446: my $metaresult =
2447: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2448: my $url = "/uploaded/$docudom/$docuname/$old";
2449: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2450: my $sqlresult =
2451: &update_portfolio_table($docuname,$docudom,$file,
2452: 'portfolio_metadata',$group,
2453: 'delete');
2454: }
2455: }
2456: return $result;
2457: }
2458:
2459: # ------------------------------------------------------------------------- Log
2460:
2461: sub log {
2462: my ($dom,$nam,$hom,$what)=@_;
2463: return critical("log:$dom:$nam:$what",$hom);
2464: }
2465:
2466: # ------------------------------------------------------------------ Course Log
2467: #
2468: # This routine flushes several buffers of non-mission-critical nature
2469: #
2470:
2471: sub flushcourselogs {
2472: &logthis('Flushing log buffers');
2473: #
2474: # course logs
2475: # This is a log of all transactions in a course, which can be used
2476: # for data mining purposes
2477: #
2478: # It also collects the courseid database, which lists last transaction
2479: # times and course titles for all courseids
2480: #
2481: my %courseidbuffer=();
2482: foreach my $crsid (keys(%courselogs)) {
2483: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2484: &escape($courselogs{$crsid}),
2485: $coursehombuf{$crsid}) eq 'ok') {
2486: delete $courselogs{$crsid};
2487: } else {
2488: &logthis('Failed to flush log buffer for '.$crsid);
2489: if (length($courselogs{$crsid})>40000) {
2490: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2491: " exceeded maximum size, deleting.</font>");
2492: delete $courselogs{$crsid};
2493: }
2494: }
2495: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2496: 'description' => $coursedescrbuf{$crsid},
2497: 'inst_code' => $courseinstcodebuf{$crsid},
2498: 'type' => $coursetypebuf{$crsid},
2499: 'owner' => $courseownerbuf{$crsid},
2500: };
2501: }
2502: #
2503: # Write course id database (reverse lookup) to homeserver of courses
2504: # Is used in pickcourse
2505: #
2506: foreach my $crs_home (keys(%courseidbuffer)) {
2507: my $response = &courseidput(&host_domain($crs_home),
2508: $courseidbuffer{$crs_home},
2509: $crs_home,'timeonly');
2510: }
2511: #
2512: # File accesses
2513: # Writes to the dynamic metadata of resources to get hit counts, etc.
2514: #
2515: foreach my $entry (keys(%accesshash)) {
2516: if ($entry =~ /___count$/) {
2517: my ($dom,$name);
2518: ($dom,$name,undef)=
2519: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2520: if (! defined($dom) || $dom eq '' ||
2521: ! defined($name) || $name eq '') {
2522: my $cid = $env{'request.course.id'};
2523: $dom = $env{'request.'.$cid.'.domain'};
2524: $name = $env{'request.'.$cid.'.num'};
2525: }
2526: my $value = $accesshash{$entry};
2527: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2528: my %temphash=($url => $value);
2529: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2530: if ($result eq 'ok') {
2531: delete $accesshash{$entry};
2532: } elsif ($result eq 'unknown_cmd') {
2533: # Target server has old code running on it.
2534: my %temphash=($entry => $value);
2535: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2536: delete $accesshash{$entry};
2537: }
2538: }
2539: } else {
2540: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2541: my %temphash=($entry => $accesshash{$entry});
2542: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2543: delete $accesshash{$entry};
2544: }
2545: }
2546: }
2547: #
2548: # Roles
2549: # Reverse lookup of user roles for course faculty/staff and co-authorship
2550: #
2551: foreach my $entry (keys(%userrolehash)) {
2552: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2553: split(/\:/,$entry);
2554: if (&Apache::lonnet::put('nohist_userroles',
2555: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2556: $rudom,$runame) eq 'ok') {
2557: delete $userrolehash{$entry};
2558: }
2559: }
2560: #
2561: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2562: #
2563: my %domrolebuffer = ();
2564: foreach my $entry (keys(%domainrolehash)) {
2565: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2566: if ($domrolebuffer{$rudom}) {
2567: $domrolebuffer{$rudom}.='&'.&escape($entry).
2568: '='.&escape($domainrolehash{$entry});
2569: } else {
2570: $domrolebuffer{$rudom}.=&escape($entry).
2571: '='.&escape($domainrolehash{$entry});
2572: }
2573: delete $domainrolehash{$entry};
2574: }
2575: foreach my $dom (keys(%domrolebuffer)) {
2576: my %servers = &get_servers($dom,'library');
2577: foreach my $tryserver (keys(%servers)) {
2578: unless (&reply('domroleput:'.$dom.':'.
2579: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2580: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2581: }
2582: }
2583: }
2584: $dumpcount++;
2585: }
2586:
2587: sub courselog {
2588: my $what=shift;
2589: $what=time.':'.$what;
2590: unless ($env{'request.course.id'}) { return ''; }
2591: $coursedombuf{$env{'request.course.id'}}=
2592: $env{'course.'.$env{'request.course.id'}.'.domain'};
2593: $coursenumbuf{$env{'request.course.id'}}=
2594: $env{'course.'.$env{'request.course.id'}.'.num'};
2595: $coursehombuf{$env{'request.course.id'}}=
2596: $env{'course.'.$env{'request.course.id'}.'.home'};
2597: $coursedescrbuf{$env{'request.course.id'}}=
2598: $env{'course.'.$env{'request.course.id'}.'.description'};
2599: $courseinstcodebuf{$env{'request.course.id'}}=
2600: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2601: $courseownerbuf{$env{'request.course.id'}}=
2602: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2603: $coursetypebuf{$env{'request.course.id'}}=
2604: $env{'course.'.$env{'request.course.id'}.'.type'};
2605: if (defined $courselogs{$env{'request.course.id'}}) {
2606: $courselogs{$env{'request.course.id'}}.='&'.$what;
2607: } else {
2608: $courselogs{$env{'request.course.id'}}.=$what;
2609: }
2610: if (length($courselogs{$env{'request.course.id'}})>4048) {
2611: &flushcourselogs();
2612: }
2613: }
2614:
2615: sub courseacclog {
2616: my $fnsymb=shift;
2617: unless ($env{'request.course.id'}) { return ''; }
2618: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2619: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2620: $what.=':POST';
2621: # FIXME: Probably ought to escape things....
2622: foreach my $key (keys(%env)) {
2623: if ($key=~/^form\.(.*)/) {
2624: my $formitem = $1;
2625: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2626: $what.=':'.$formitem.'='.$env{$key};
2627: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2628: $what.=':'.$formitem.'='.$env{$key};
2629: }
2630: }
2631: }
2632: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2633: # FIXME: We should not be depending on a form parameter that someone
2634: # editing lonsearchcat.pm might change in the future.
2635: if ($env{'form.phase'} eq 'course_search') {
2636: $what.= ':POST';
2637: # FIXME: Probably ought to escape things....
2638: foreach my $element ('courseexp','crsfulltext','crsrelated',
2639: 'crsdiscuss') {
2640: $what.=':'.$element.'='.$env{'form.'.$element};
2641: }
2642: }
2643: }
2644: &courselog($what);
2645: }
2646:
2647: sub countacc {
2648: my $url=&declutter(shift);
2649: return if (! defined($url) || $url eq '');
2650: unless ($env{'request.course.id'}) { return ''; }
2651: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2652: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2653: $accesshash{$key}++;
2654: }
2655:
2656: sub linklog {
2657: my ($from,$to)=@_;
2658: $from=&declutter($from);
2659: $to=&declutter($to);
2660: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2661: $accesshash{$to.'___'.$from.'___goto'}=1;
2662: }
2663:
2664: sub userrolelog {
2665: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2666: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2667: ($trole=~/^in/) || ($trole=~/^cc/) ||
2668: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2669: ($trole=~/^ta/)) {
2670: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2671: $userrolehash
2672: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2673: =$tend.':'.$tstart;
2674: }
2675: if (($env{'request.role'} =~ /dc\./) &&
2676: (($trole=~/^au/) || ($trole=~/^in/) ||
2677: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2678: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2679: $userrolehash
2680: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2681: =$tend.':'.$tstart;
2682: }
2683: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2684: ($trole=~/^li/) || ($trole=~/^li/) ||
2685: ($trole=~/^au/) || ($trole=~/^dg/) ||
2686: ($trole=~/^sc/)) {
2687: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2688: $domainrolehash
2689: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2690: = $tend.':'.$tstart;
2691: }
2692: }
2693:
2694: sub courserolelog {
2695: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2696: if (($trole eq 'cc') || ($trole eq 'in') ||
2697: ($trole eq 'ep') || ($trole eq 'ad') ||
2698: ($trole eq 'ta') || ($trole eq 'st') ||
2699: ($trole=~/^cr/) || ($trole eq 'gr')) {
2700: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2701: my $cdom = $1;
2702: my $cnum = $2;
2703: my $sec = $3;
2704: my $namespace = 'rolelog';
2705: my %storehash = (
2706: role => $trole,
2707: start => $tstart,
2708: end => $tend,
2709: selfenroll => $selfenroll,
2710: context => $context,
2711: );
2712: if ($trole eq 'gr') {
2713: $namespace = 'groupslog';
2714: $storehash{'group'} = $sec;
2715: } else {
2716: $storehash{'section'} = $sec;
2717: }
2718: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2719: if (($trole ne 'st') || ($sec ne '')) {
2720: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
2721: }
2722: }
2723: }
2724: return;
2725: }
2726:
2727: sub get_course_adv_roles {
2728: my ($cid,$codes) = @_;
2729: $cid=$env{'request.course.id'} unless (defined($cid));
2730: my %coursehash=&coursedescription($cid);
2731: my $crstype = &Apache::loncommon::course_type($cid);
2732: my %nothide=();
2733: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2734: if ($user !~ /:/) {
2735: $nothide{join(':',split(/[\@]/,$user))}=1;
2736: } else {
2737: $nothide{$user}=1;
2738: }
2739: }
2740: my %returnhash=();
2741: my %dumphash=
2742: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2743: my $now=time;
2744: my %privileged;
2745: foreach my $entry (keys(%dumphash)) {
2746: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2747: if (($tstart) && ($tstart<0)) { next; }
2748: if (($tend) && ($tend<$now)) { next; }
2749: if (($tstart) && ($now<$tstart)) { next; }
2750: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2751: if ($username eq '' || $domain eq '') { next; }
2752: unless (ref($privileged{$domain}) eq 'HASH') {
2753: my %dompersonnel =
2754: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
2755: $privileged{$domain} = {};
2756: foreach my $server (keys(%dompersonnel)) {
2757: if (ref($dompersonnel{$server}) eq 'HASH') {
2758: foreach my $user (keys(%{$dompersonnel{$server}})) {
2759: my ($trole,$uname,$udom) = split(/:/,$user);
2760: $privileged{$udom}{$uname} = 1;
2761: }
2762: }
2763: }
2764: }
2765: if ((exists($privileged{$domain}{$username})) &&
2766: (!$nothide{$username.':'.$domain})) { next; }
2767: if ($role eq 'cr') { next; }
2768: if ($codes) {
2769: if ($section) { $role .= ':'.$section; }
2770: if ($returnhash{$role}) {
2771: $returnhash{$role}.=','.$username.':'.$domain;
2772: } else {
2773: $returnhash{$role}=$username.':'.$domain;
2774: }
2775: } else {
2776: my $key=&plaintext($role,$crstype);
2777: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
2778: if ($returnhash{$key}) {
2779: $returnhash{$key}.=','.$username.':'.$domain;
2780: } else {
2781: $returnhash{$key}=$username.':'.$domain;
2782: }
2783: }
2784: }
2785: return %returnhash;
2786: }
2787:
2788: sub get_my_roles {
2789: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2790: unless (defined($uname)) { $uname=$env{'user.name'}; }
2791: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2792: my (%dumphash,%nothide);
2793: if ($context eq 'userroles') {
2794: %dumphash = &dump('roles',$udom,$uname);
2795: } else {
2796: %dumphash=
2797: &dump('nohist_userroles',$udom,$uname);
2798: if ($hidepriv) {
2799: my %coursehash=&coursedescription($udom.'_'.$uname);
2800: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2801: if ($user !~ /:/) {
2802: $nothide{join(':',split(/[\@]/,$user))} = 1;
2803: } else {
2804: $nothide{$user} = 1;
2805: }
2806: }
2807: }
2808: }
2809: my %returnhash=();
2810: my $now=time;
2811: my %privileged;
2812: foreach my $entry (keys(%dumphash)) {
2813: my ($role,$tend,$tstart);
2814: if ($context eq 'userroles') {
2815: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2816: } else {
2817: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2818: }
2819: if (($tstart) && ($tstart<0)) { next; }
2820: my $status = 'active';
2821: if (($tend) && ($tend<=$now)) {
2822: $status = 'previous';
2823: }
2824: if (($tstart) && ($now<$tstart)) {
2825: $status = 'future';
2826: }
2827: if (ref($types) eq 'ARRAY') {
2828: if (!grep(/^\Q$status\E$/,@{$types})) {
2829: next;
2830: }
2831: } else {
2832: if ($status ne 'active') {
2833: next;
2834: }
2835: }
2836: my ($rolecode,$username,$domain,$section,$area);
2837: if ($context eq 'userroles') {
2838: ($area,$rolecode) = split(/_/,$entry);
2839: (undef,$domain,$username,$section) = split(/\//,$area);
2840: } else {
2841: ($role,$username,$domain,$section) = split(/\:/,$entry);
2842: }
2843: if (ref($roledoms) eq 'ARRAY') {
2844: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2845: next;
2846: }
2847: }
2848: if (ref($roles) eq 'ARRAY') {
2849: if (!grep(/^\Q$role\E$/,@{$roles})) {
2850: if ($role =~ /^cr\//) {
2851: if (!grep(/^cr$/,@{$roles})) {
2852: next;
2853: }
2854: } else {
2855: next;
2856: }
2857: }
2858: }
2859: if ($hidepriv) {
2860: if ($context eq 'userroles') {
2861: if ((&privileged($username,$domain)) &&
2862: (!$nothide{$username.':'.$domain})) {
2863: next;
2864: }
2865: } else {
2866: unless (ref($privileged{$domain}) eq 'HASH') {
2867: my %dompersonnel =
2868: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
2869: $privileged{$domain} = {};
2870: if (keys(%dompersonnel)) {
2871: foreach my $server (keys(%dompersonnel)) {
2872: if (ref($dompersonnel{$server}) eq 'HASH') {
2873: foreach my $user (keys(%{$dompersonnel{$server}})) {
2874: my ($trole,$uname,$udom) = split(/:/,$user);
2875: $privileged{$udom}{$uname} = $trole;
2876: }
2877: }
2878: }
2879: }
2880: }
2881: if (exists($privileged{$domain}{$username})) {
2882: if (!$nothide{$username.':'.$domain}) {
2883: next;
2884: }
2885: }
2886: }
2887: }
2888: if ($withsec) {
2889: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2890: $tstart.':'.$tend;
2891: } else {
2892: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2893: }
2894: }
2895: return %returnhash;
2896: }
2897:
2898: # ----------------------------------------------------- Frontpage Announcements
2899: #
2900: #
2901:
2902: sub postannounce {
2903: my ($server,$text)=@_;
2904: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2905: unless ($text=~/\w/) { $text=''; }
2906: return &reply('setannounce:'.&escape($text),$server);
2907: }
2908:
2909: sub getannounce {
2910:
2911: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2912: my $announcement='';
2913: while (my $line = <$fh>) { $announcement .= $line; }
2914: close($fh);
2915: if ($announcement=~/\w/) {
2916: return
2917: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2918: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2919: } else {
2920: return '';
2921: }
2922: } else {
2923: return '';
2924: }
2925: }
2926:
2927: # ---------------------------------------------------------- Course ID routines
2928: # Deal with domain's nohist_courseid.db files
2929: #
2930:
2931: sub courseidput {
2932: my ($domain,$storehash,$coursehome,$caller) = @_;
2933: my $outcome;
2934: if ($caller eq 'timeonly') {
2935: my $cids = '';
2936: foreach my $item (keys(%$storehash)) {
2937: $cids.=&escape($item).'&';
2938: }
2939: $cids=~s/\&$//;
2940: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2941: $coursehome);
2942: } else {
2943: my $items = '';
2944: foreach my $item (keys(%$storehash)) {
2945: $items.= &escape($item).'='.
2946: &freeze_escape($$storehash{$item}).'&';
2947: }
2948: $items=~s/\&$//;
2949: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2950: $coursehome);
2951: }
2952: if ($outcome eq 'unknown_cmd') {
2953: my $what;
2954: foreach my $cid (keys(%$storehash)) {
2955: $what .= &escape($cid).'=';
2956: foreach my $item ('description','inst_code','owner','type') {
2957: $what .= &escape($storehash->{$cid}{$item}).':';
2958: }
2959: $what =~ s/\:$/&/;
2960: }
2961: $what =~ s/\&$//;
2962: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2963: } else {
2964: return $outcome;
2965: }
2966: }
2967:
2968: sub courseiddump {
2969: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2970: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2971: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,$cloneonly)=@_;
2972: my $as_hash = 1;
2973: my %returnhash;
2974: if (!$domfilter) { $domfilter=''; }
2975: my %libserv = &all_library();
2976: foreach my $tryserver (keys(%libserv)) {
2977: if ( ( $hostidflag == 1
2978: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2979: || (!defined($hostidflag)) ) {
2980:
2981: if (($domfilter eq '') ||
2982: (&host_domain($tryserver) eq $domfilter)) {
2983: my $rep =
2984: &reply('courseiddump:'.&host_domain($tryserver).':'.
2985: $sincefilter.':'.&escape($descfilter).':'.
2986: &escape($instcodefilter).':'.&escape($ownerfilter).
2987: ':'.&escape($coursefilter).':'.&escape($typefilter).
2988: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2989: &escape($selfenrollonly).':'.&escape($catfilter).':'.
2990: $showhidden.':'.$caller.':'.&escape($cloner).':'.
2991: &escape($cc_clone).':'.$cloneonly,$tryserver);
2992: my @pairs=split(/\&/,$rep);
2993: foreach my $item (@pairs) {
2994: my ($key,$value)=split(/\=/,$item,2);
2995: $key = &unescape($key);
2996: next if ($key =~ /^error: 2 /);
2997: my $result = &thaw_unescape($value);
2998: if (ref($result) eq 'HASH') {
2999: $returnhash{$key}=$result;
3000: } else {
3001: my @responses = split(/:/,$value);
3002: my @items = ('description','inst_code','owner','type');
3003: for (my $i=0; $i<@responses; $i++) {
3004: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3005: }
3006: }
3007: }
3008: }
3009: }
3010: }
3011: return %returnhash;
3012: }
3013:
3014: # ---------------------------------------------------------- DC e-mail
3015:
3016: sub dcmailput {
3017: my ($domain,$msgid,$message,$server)=@_;
3018: my $status = &Apache::lonnet::critical(
3019: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3020: &escape($message),$server);
3021: return $status;
3022: }
3023:
3024: sub dcmaildump {
3025: my ($dom,$startdate,$enddate,$senders) = @_;
3026: my %returnhash=();
3027:
3028: if (defined(&domain($dom,'primary'))) {
3029: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3030: &escape($enddate).':';
3031: my @esc_senders=map { &escape($_)} @$senders;
3032: $cmd.=&escape(join('&',@esc_senders));
3033: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3034: my ($key,$value) = split(/\=/,$line,2);
3035: if (($key) && ($value)) {
3036: $returnhash{&unescape($key)} = &unescape($value);
3037: }
3038: }
3039: }
3040: return %returnhash;
3041: }
3042: # ---------------------------------------------------------- Domain roles
3043:
3044: sub get_domain_roles {
3045: my ($dom,$roles,$startdate,$enddate)=@_;
3046: if (undef($startdate) || $startdate eq '') {
3047: $startdate = '.';
3048: }
3049: if (undef($enddate) || $enddate eq '') {
3050: $enddate = '.';
3051: }
3052: my $rolelist;
3053: if (ref($roles) eq 'ARRAY') {
3054: $rolelist = join(':',@{$roles});
3055: }
3056: my %personnel = ();
3057:
3058: my %servers = &get_servers($dom,'library');
3059: foreach my $tryserver (keys(%servers)) {
3060: %{$personnel{$tryserver}}=();
3061: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3062: &escape($startdate).':'.
3063: &escape($enddate).':'.
3064: &escape($rolelist), $tryserver))) {
3065: my ($key,$value) = split(/\=/,$line,2);
3066: if (($key) && ($value)) {
3067: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3068: }
3069: }
3070: }
3071: return %personnel;
3072: }
3073:
3074: # ----------------------------------------------------------- Check out an item
3075:
3076: sub get_first_access {
3077: my ($type,$argsymb)=@_;
3078: my ($symb,$courseid,$udom,$uname)=&whichuser();
3079: if ($argsymb) { $symb=$argsymb; }
3080: my ($map,$id,$res)=&decode_symb($symb);
3081: if ($type eq 'course') {
3082: $res='course';
3083: } elsif ($type eq 'map') {
3084: $res=&symbread($map);
3085: } else {
3086: $res=$symb;
3087: }
3088: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3089: return $times{"$courseid\0$res"};
3090: }
3091:
3092: sub set_first_access {
3093: my ($type)=@_;
3094: my ($symb,$courseid,$udom,$uname)=&whichuser();
3095: my ($map,$id,$res)=&decode_symb($symb);
3096: if ($type eq 'course') {
3097: $res='course';
3098: } elsif ($type eq 'map') {
3099: $res=&symbread($map);
3100: } else {
3101: $res=$symb;
3102: }
3103: my $firstaccess=&get_first_access($type,$symb);
3104: if (!$firstaccess) {
3105: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3106: }
3107: return 'already_set';
3108: }
3109:
3110: sub checkout {
3111: my ($symb,$tuname,$tudom,$tcrsid)=@_;
3112: my $now=time;
3113: my $lonhost=$perlvar{'lonHostID'};
3114: my $infostr=&escape(
3115: 'CHECKOUTTOKEN&'.
3116: $tuname.'&'.
3117: $tudom.'&'.
3118: $tcrsid.'&'.
3119: $symb.'&'.
3120: $now.'&'.$ENV{'REMOTE_ADDR'});
3121: my $token=&reply('tmpput:'.$infostr,$lonhost);
3122: if ($token=~/^error\:/) {
3123: &logthis("<font color=\"blue\">WARNING: ".
3124: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
3125: "</font>");
3126: return '';
3127: }
3128:
3129: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
3130: $token=~tr/a-z/A-Z/;
3131:
3132: my %infohash=('resource.0.outtoken' => $token,
3133: 'resource.0.checkouttime' => $now,
3134: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
3135:
3136: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3137: return '';
3138: } else {
3139: &logthis("<font color=\"blue\">WARNING: ".
3140: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
3141: "</font>");
3142: }
3143:
3144: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3145: &escape('Checkout '.$infostr.' - '.
3146: $token)) ne 'ok') {
3147: return '';
3148: } else {
3149: &logthis("<font color=\"blue\">WARNING: ".
3150: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
3151: "</font>");
3152: }
3153: return $token;
3154: }
3155:
3156: # ------------------------------------------------------------ Check in an item
3157:
3158: sub checkin {
3159: my $token=shift;
3160: my $now=time;
3161: my ($ta,$tb,$lonhost)=split(/\*/,$token);
3162: $lonhost=~tr/A-Z/a-z/;
3163: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
3164: $dtoken=~s/\W/\_/g;
3165: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
3166: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
3167:
3168: unless (($tuname) && ($tudom)) {
3169: &logthis('Check in '.$token.' ('.$dtoken.') failed');
3170: return '';
3171: }
3172:
3173: unless (&allowed('mgr',$tcrsid)) {
3174: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
3175: $env{'user.name'}.' - '.$env{'user.domain'});
3176: return '';
3177: }
3178:
3179: my %infohash=('resource.0.intoken' => $token,
3180: 'resource.0.checkintime' => $now,
3181: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
3182:
3183: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3184: return '';
3185: }
3186:
3187: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3188: &escape('Checkin - '.$token)) ne 'ok') {
3189: return '';
3190: }
3191:
3192: return ($symb,$tuname,$tudom,$tcrsid);
3193: }
3194:
3195: # --------------------------------------------- Set Expire Date for Spreadsheet
3196:
3197: sub expirespread {
3198: my ($uname,$udom,$stype,$usymb)=@_;
3199: my $cid=$env{'request.course.id'};
3200: if ($cid) {
3201: my $now=time;
3202: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3203: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3204: $env{'course.'.$cid.'.num'}.
3205: ':nohist_expirationdates:'.
3206: &escape($key).'='.$now,
3207: $env{'course.'.$cid.'.home'})
3208: }
3209: return 'ok';
3210: }
3211:
3212: # ----------------------------------------------------- Devalidate Spreadsheets
3213:
3214: sub devalidate {
3215: my ($symb,$uname,$udom)=@_;
3216: my $cid=$env{'request.course.id'};
3217: if ($cid) {
3218: # delete the stored spreadsheets for
3219: # - the student level sheet of this user in course's homespace
3220: # - the assessment level sheet for this resource
3221: # for this user in user's homespace
3222: # - current conditional state info
3223: my $key=$uname.':'.$udom.':';
3224: my $status=
3225: &del('nohist_calculatedsheets',
3226: [$key.'studentcalc:'],
3227: $env{'course.'.$cid.'.domain'},
3228: $env{'course.'.$cid.'.num'})
3229: .' '.
3230: &del('nohist_calculatedsheets_'.$cid,
3231: [$key.'assesscalc:'.$symb],$udom,$uname);
3232: unless ($status eq 'ok ok') {
3233: &logthis('Could not devalidate spreadsheet '.
3234: $uname.' at '.$udom.' for '.
3235: $symb.': '.$status);
3236: }
3237: &delenv('user.state.'.$cid);
3238: }
3239: }
3240:
3241: sub get_scalar {
3242: my ($string,$end) = @_;
3243: my $value;
3244: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3245: $value = $1;
3246: } elsif ($$string =~ s/^([^&]*?)&//) {
3247: $value = $1;
3248: }
3249: return &unescape($value);
3250: }
3251:
3252: sub array2str {
3253: my (@array) = @_;
3254: my $result=&arrayref2str(\@array);
3255: $result=~s/^__ARRAY_REF__//;
3256: $result=~s/__END_ARRAY_REF__$//;
3257: return $result;
3258: }
3259:
3260: sub arrayref2str {
3261: my ($arrayref) = @_;
3262: my $result='__ARRAY_REF__';
3263: foreach my $elem (@$arrayref) {
3264: if(ref($elem) eq 'ARRAY') {
3265: $result.=&arrayref2str($elem).'&';
3266: } elsif(ref($elem) eq 'HASH') {
3267: $result.=&hashref2str($elem).'&';
3268: } elsif(ref($elem)) {
3269: #print("Got a ref of ".(ref($elem))." skipping.");
3270: } else {
3271: $result.=&escape($elem).'&';
3272: }
3273: }
3274: $result=~s/\&$//;
3275: $result .= '__END_ARRAY_REF__';
3276: return $result;
3277: }
3278:
3279: sub hash2str {
3280: my (%hash) = @_;
3281: my $result=&hashref2str(\%hash);
3282: $result=~s/^__HASH_REF__//;
3283: $result=~s/__END_HASH_REF__$//;
3284: return $result;
3285: }
3286:
3287: sub hashref2str {
3288: my ($hashref)=@_;
3289: my $result='__HASH_REF__';
3290: foreach my $key (sort(keys(%$hashref))) {
3291: if (ref($key) eq 'ARRAY') {
3292: $result.=&arrayref2str($key).'=';
3293: } elsif (ref($key) eq 'HASH') {
3294: $result.=&hashref2str($key).'=';
3295: } elsif (ref($key)) {
3296: $result.='=';
3297: #print("Got a ref of ".(ref($key))." skipping.");
3298: } else {
3299: if ($key) {$result.=&escape($key).'=';} else { last; }
3300: }
3301:
3302: if(ref($hashref->{$key}) eq 'ARRAY') {
3303: $result.=&arrayref2str($hashref->{$key}).'&';
3304: } elsif(ref($hashref->{$key}) eq 'HASH') {
3305: $result.=&hashref2str($hashref->{$key}).'&';
3306: } elsif(ref($hashref->{$key})) {
3307: $result.='&';
3308: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3309: } else {
3310: $result.=&escape($hashref->{$key}).'&';
3311: }
3312: }
3313: $result=~s/\&$//;
3314: $result .= '__END_HASH_REF__';
3315: return $result;
3316: }
3317:
3318: sub str2hash {
3319: my ($string)=@_;
3320: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3321: return %$hash;
3322: }
3323:
3324: sub str2hashref {
3325: my ($string) = @_;
3326:
3327: my %hash;
3328:
3329: if($string !~ /^__HASH_REF__/) {
3330: if (! ($string eq '' || !defined($string))) {
3331: $hash{'error'}='Not hash reference';
3332: }
3333: return (\%hash, $string);
3334: }
3335:
3336: $string =~ s/^__HASH_REF__//;
3337:
3338: while($string !~ /^__END_HASH_REF__/) {
3339: #key
3340: my $key='';
3341: if($string =~ /^__HASH_REF__/) {
3342: ($key, $string)=&str2hashref($string);
3343: if(defined($key->{'error'})) {
3344: $hash{'error'}='Bad data';
3345: return (\%hash, $string);
3346: }
3347: } elsif($string =~ /^__ARRAY_REF__/) {
3348: ($key, $string)=&str2arrayref($string);
3349: if($key->[0] eq 'Array reference error') {
3350: $hash{'error'}='Bad data';
3351: return (\%hash, $string);
3352: }
3353: } else {
3354: $string =~ s/^(.*?)=//;
3355: $key=&unescape($1);
3356: }
3357: $string =~ s/^=//;
3358:
3359: #value
3360: my $value='';
3361: if($string =~ /^__HASH_REF__/) {
3362: ($value, $string)=&str2hashref($string);
3363: if(defined($value->{'error'})) {
3364: $hash{'error'}='Bad data';
3365: return (\%hash, $string);
3366: }
3367: } elsif($string =~ /^__ARRAY_REF__/) {
3368: ($value, $string)=&str2arrayref($string);
3369: if($value->[0] eq 'Array reference error') {
3370: $hash{'error'}='Bad data';
3371: return (\%hash, $string);
3372: }
3373: } else {
3374: $value=&get_scalar(\$string,'__END_HASH_REF__');
3375: }
3376: $string =~ s/^&//;
3377:
3378: $hash{$key}=$value;
3379: }
3380:
3381: $string =~ s/^__END_HASH_REF__//;
3382:
3383: return (\%hash, $string);
3384: }
3385:
3386: sub str2array {
3387: my ($string)=@_;
3388: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3389: return @$array;
3390: }
3391:
3392: sub str2arrayref {
3393: my ($string) = @_;
3394: my @array;
3395:
3396: if($string !~ /^__ARRAY_REF__/) {
3397: if (! ($string eq '' || !defined($string))) {
3398: $array[0]='Array reference error';
3399: }
3400: return (\@array, $string);
3401: }
3402:
3403: $string =~ s/^__ARRAY_REF__//;
3404:
3405: while($string !~ /^__END_ARRAY_REF__/) {
3406: my $value='';
3407: if($string =~ /^__HASH_REF__/) {
3408: ($value, $string)=&str2hashref($string);
3409: if(defined($value->{'error'})) {
3410: $array[0] ='Array reference error';
3411: return (\@array, $string);
3412: }
3413: } elsif($string =~ /^__ARRAY_REF__/) {
3414: ($value, $string)=&str2arrayref($string);
3415: if($value->[0] eq 'Array reference error') {
3416: $array[0] ='Array reference error';
3417: return (\@array, $string);
3418: }
3419: } else {
3420: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3421: }
3422: $string =~ s/^&//;
3423:
3424: push(@array, $value);
3425: }
3426:
3427: $string =~ s/^__END_ARRAY_REF__//;
3428:
3429: return (\@array, $string);
3430: }
3431:
3432: # -------------------------------------------------------------------Temp Store
3433:
3434: sub tmpreset {
3435: my ($symb,$namespace,$domain,$stuname) = @_;
3436: if (!$symb) {
3437: $symb=&symbread();
3438: if (!$symb) { $symb= $env{'request.url'}; }
3439: }
3440: $symb=escape($symb);
3441:
3442: if (!$namespace) { $namespace=$env{'request.state'}; }
3443: $namespace=~s/\//\_/g;
3444: $namespace=~s/\W//g;
3445:
3446: if (!$domain) { $domain=$env{'user.domain'}; }
3447: if (!$stuname) { $stuname=$env{'user.name'}; }
3448: if ($domain eq 'public' && $stuname eq 'public') {
3449: $stuname=$ENV{'REMOTE_ADDR'};
3450: }
3451: my $path=$perlvar{'lonDaemons'}.'/tmp';
3452: my %hash;
3453: if (tie(%hash,'GDBM_File',
3454: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3455: &GDBM_WRCREAT(),0640)) {
3456: foreach my $key (keys(%hash)) {
3457: if ($key=~ /:$symb/) {
3458: delete($hash{$key});
3459: }
3460: }
3461: }
3462: }
3463:
3464: sub tmpstore {
3465: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3466:
3467: if (!$symb) {
3468: $symb=&symbread();
3469: if (!$symb) { $symb= $env{'request.url'}; }
3470: }
3471: $symb=escape($symb);
3472:
3473: if (!$namespace) {
3474: # I don't think we would ever want to store this for a course.
3475: # it seems this will only be used if we don't have a course.
3476: #$namespace=$env{'request.course.id'};
3477: #if (!$namespace) {
3478: $namespace=$env{'request.state'};
3479: #}
3480: }
3481: $namespace=~s/\//\_/g;
3482: $namespace=~s/\W//g;
3483: if (!$domain) { $domain=$env{'user.domain'}; }
3484: if (!$stuname) { $stuname=$env{'user.name'}; }
3485: if ($domain eq 'public' && $stuname eq 'public') {
3486: $stuname=$ENV{'REMOTE_ADDR'};
3487: }
3488: my $now=time;
3489: my %hash;
3490: my $path=$perlvar{'lonDaemons'}.'/tmp';
3491: if (tie(%hash,'GDBM_File',
3492: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3493: &GDBM_WRCREAT(),0640)) {
3494: $hash{"version:$symb"}++;
3495: my $version=$hash{"version:$symb"};
3496: my $allkeys='';
3497: foreach my $key (keys(%$storehash)) {
3498: $allkeys.=$key.':';
3499: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3500: }
3501: $hash{"$version:$symb:timestamp"}=$now;
3502: $allkeys.='timestamp';
3503: $hash{"$version:keys:$symb"}=$allkeys;
3504: if (untie(%hash)) {
3505: return 'ok';
3506: } else {
3507: return "error:$!";
3508: }
3509: } else {
3510: return "error:$!";
3511: }
3512: }
3513:
3514: # -----------------------------------------------------------------Temp Restore
3515:
3516: sub tmprestore {
3517: my ($symb,$namespace,$domain,$stuname) = @_;
3518:
3519: if (!$symb) {
3520: $symb=&symbread();
3521: if (!$symb) { $symb= $env{'request.url'}; }
3522: }
3523: $symb=escape($symb);
3524:
3525: if (!$namespace) { $namespace=$env{'request.state'}; }
3526:
3527: if (!$domain) { $domain=$env{'user.domain'}; }
3528: if (!$stuname) { $stuname=$env{'user.name'}; }
3529: if ($domain eq 'public' && $stuname eq 'public') {
3530: $stuname=$ENV{'REMOTE_ADDR'};
3531: }
3532: my %returnhash;
3533: $namespace=~s/\//\_/g;
3534: $namespace=~s/\W//g;
3535: my %hash;
3536: my $path=$perlvar{'lonDaemons'}.'/tmp';
3537: if (tie(%hash,'GDBM_File',
3538: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3539: &GDBM_READER(),0640)) {
3540: my $version=$hash{"version:$symb"};
3541: $returnhash{'version'}=$version;
3542: my $scope;
3543: for ($scope=1;$scope<=$version;$scope++) {
3544: my $vkeys=$hash{"$scope:keys:$symb"};
3545: my @keys=split(/:/,$vkeys);
3546: my $key;
3547: $returnhash{"$scope:keys"}=$vkeys;
3548: foreach $key (@keys) {
3549: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3550: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3551: }
3552: }
3553: if (!(untie(%hash))) {
3554: return "error:$!";
3555: }
3556: } else {
3557: return "error:$!";
3558: }
3559: return %returnhash;
3560: }
3561:
3562: # ----------------------------------------------------------------------- Store
3563:
3564: sub store {
3565: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3566: my $home='';
3567:
3568: if ($stuname) { $home=&homeserver($stuname,$domain); }
3569:
3570: $symb=&symbclean($symb);
3571: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3572:
3573: if (!$domain) { $domain=$env{'user.domain'}; }
3574: if (!$stuname) { $stuname=$env{'user.name'}; }
3575:
3576: &devalidate($symb,$stuname,$domain);
3577:
3578: $symb=escape($symb);
3579: if (!$namespace) {
3580: unless ($namespace=$env{'request.course.id'}) {
3581: return '';
3582: }
3583: }
3584: if (!$home) { $home=$env{'user.home'}; }
3585:
3586: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3587: $$storehash{'host'}=$perlvar{'lonHostID'};
3588:
3589: my $namevalue='';
3590: foreach my $key (keys(%$storehash)) {
3591: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3592: }
3593: $namevalue=~s/\&$//;
3594: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3595: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3596: }
3597:
3598: # -------------------------------------------------------------- Critical Store
3599:
3600: sub cstore {
3601: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3602: my $home='';
3603:
3604: if ($stuname) { $home=&homeserver($stuname,$domain); }
3605:
3606: $symb=&symbclean($symb);
3607: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3608:
3609: if (!$domain) { $domain=$env{'user.domain'}; }
3610: if (!$stuname) { $stuname=$env{'user.name'}; }
3611:
3612: &devalidate($symb,$stuname,$domain);
3613:
3614: $symb=escape($symb);
3615: if (!$namespace) {
3616: unless ($namespace=$env{'request.course.id'}) {
3617: return '';
3618: }
3619: }
3620: if (!$home) { $home=$env{'user.home'}; }
3621:
3622: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3623: $$storehash{'host'}=$perlvar{'lonHostID'};
3624:
3625: my $namevalue='';
3626: foreach my $key (keys(%$storehash)) {
3627: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3628: }
3629: $namevalue=~s/\&$//;
3630: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3631: return critical
3632: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3633: }
3634:
3635: # --------------------------------------------------------------------- Restore
3636:
3637: sub restore {
3638: my ($symb,$namespace,$domain,$stuname) = @_;
3639: my $home='';
3640:
3641: if ($stuname) { $home=&homeserver($stuname,$domain); }
3642:
3643: if (!$symb) {
3644: unless ($symb=escape(&symbread())) { return ''; }
3645: } else {
3646: $symb=&escape(&symbclean($symb));
3647: }
3648: if (!$namespace) {
3649: unless ($namespace=$env{'request.course.id'}) {
3650: return '';
3651: }
3652: }
3653: if (!$domain) { $domain=$env{'user.domain'}; }
3654: if (!$stuname) { $stuname=$env{'user.name'}; }
3655: if (!$home) { $home=$env{'user.home'}; }
3656: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3657:
3658: my %returnhash=();
3659: foreach my $line (split(/\&/,$answer)) {
3660: my ($name,$value)=split(/\=/,$line);
3661: $returnhash{&unescape($name)}=&thaw_unescape($value);
3662: }
3663: my $version;
3664: for ($version=1;$version<=$returnhash{'version'};$version++) {
3665: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3666: $returnhash{$item}=$returnhash{$version.':'.$item};
3667: }
3668: }
3669: return %returnhash;
3670: }
3671:
3672: # ---------------------------------------------------------- Course Description
3673:
3674: sub coursedescription {
3675: my ($courseid,$args)=@_;
3676: $courseid=~s/^\///;
3677: $courseid=~s/\_/\//g;
3678: my ($cdomain,$cnum)=split(/\//,$courseid);
3679: my $chome=&homeserver($cnum,$cdomain);
3680: my $normalid=$cdomain.'_'.$cnum;
3681: # need to always cache even if we get errors otherwise we keep
3682: # trying and trying and trying to get the course description.
3683: my %envhash=();
3684: my %returnhash=();
3685:
3686: my $expiretime=600;
3687: if ($env{'request.course.id'} eq $normalid) {
3688: $expiretime=120;
3689: }
3690:
3691: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3692: if (!$args->{'freshen_cache'}
3693: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3694: foreach my $key (keys(%env)) {
3695: next if ($key !~ /^\Q$prefix\E(.*)/);
3696: my ($setting) = $1;
3697: $returnhash{$setting} = $env{$key};
3698: }
3699: return %returnhash;
3700: }
3701:
3702: # get the data agin
3703: if (!$args->{'one_time'}) {
3704: $envhash{'course.'.$normalid.'.last_cache'}=time;
3705: }
3706:
3707: if ($chome ne 'no_host') {
3708: %returnhash=&dump('environment',$cdomain,$cnum);
3709: if (!exists($returnhash{'con_lost'})) {
3710: $returnhash{'home'}= $chome;
3711: $returnhash{'domain'} = $cdomain;
3712: $returnhash{'num'} = $cnum;
3713: if (!defined($returnhash{'type'})) {
3714: $returnhash{'type'} = 'Course';
3715: }
3716: while (my ($name,$value) = each %returnhash) {
3717: $envhash{'course.'.$normalid.'.'.$name}=$value;
3718: }
3719: $returnhash{'url'}=&clutter($returnhash{'url'});
3720: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3721: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3722: $envhash{'course.'.$normalid.'.home'}=$chome;
3723: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3724: $envhash{'course.'.$normalid.'.num'}=$cnum;
3725: }
3726: }
3727: if (!$args->{'one_time'}) {
3728: &appenv(\%envhash);
3729: }
3730: return %returnhash;
3731: }
3732:
3733: # -------------------------------------------------See if a user is privileged
3734:
3735: sub privileged {
3736: my ($username,$domain)=@_;
3737: my $rolesdump=&reply("dump:$domain:$username:roles",
3738: &homeserver($username,$domain));
3739: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3740: my $now=time;
3741: if ($rolesdump ne '') {
3742: foreach my $entry (split(/&/,$rolesdump)) {
3743: if ($entry!~/^rolesdef_/) {
3744: my ($area,$role)=split(/=/,$entry);
3745: $area=~s/\_\w\w$//;
3746: my ($trole,$tend,$tstart)=split(/_/,$role);
3747: if (($trole eq 'dc') || ($trole eq 'su')) {
3748: my $active=1;
3749: if ($tend) {
3750: if ($tend<$now) { $active=0; }
3751: }
3752: if ($tstart) {
3753: if ($tstart>$now) { $active=0; }
3754: }
3755: if ($active) { return 1; }
3756: }
3757: }
3758: }
3759: }
3760: return 0;
3761: }
3762:
3763: # -------------------------------------------------------- Get user privileges
3764:
3765: sub rolesinit {
3766: my ($domain,$username,$authhost)=@_;
3767: my %userroles;
3768: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3769: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return \%userroles; }
3770: my %allroles=();
3771: my %allgroups=();
3772: my $now=time;
3773: %userroles = ('user.login.time' => $now);
3774: my $group_privs;
3775:
3776: if ($rolesdump ne '') {
3777: foreach my $entry (split(/&/,$rolesdump)) {
3778: if ($entry!~/^rolesdef_/) {
3779: my ($area,$role)=split(/=/,$entry);
3780: $area=~s/\_\w\w$//;
3781: my ($trole,$tend,$tstart,$group_privs);
3782: if ($role=~/^cr/) {
3783: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3784: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3785: ($tend,$tstart)=split('_',$trest);
3786: } else {
3787: $trole=$role;
3788: }
3789: } elsif ($role =~ m|^gr/|) {
3790: ($trole,$tend,$tstart) = split(/_/,$role);
3791: ($trole,$group_privs) = split(/\//,$trole);
3792: $group_privs = &unescape($group_privs);
3793: } else {
3794: ($trole,$tend,$tstart)=split(/_/,$role);
3795: }
3796: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3797: $username);
3798: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3799: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3800: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3801: if (($area ne '') && ($trole ne '')) {
3802: my $spec=$trole.'.'.$area;
3803: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3804: if ($trole =~ /^cr\//) {
3805: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3806: } elsif ($trole eq 'gr') {
3807: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3808: } else {
3809: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3810: }
3811: }
3812: }
3813: }
3814: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3815: $userroles{'user.adv'} = $adv;
3816: $userroles{'user.author'} = $author;
3817: $env{'user.adv'}=$adv;
3818: }
3819: return \%userroles;
3820: }
3821:
3822: sub set_arearole {
3823: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3824: # log the associated role with the area
3825: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3826: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3827: }
3828:
3829: sub custom_roleprivs {
3830: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3831: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3832: my $homsvr=homeserver($rauthor,$rdomain);
3833: if (&hostname($homsvr) ne '') {
3834: my ($rdummy,$roledef)=
3835: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3836: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3837: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3838: if (defined($syspriv)) {
3839: $$allroles{'cm./'}.=':'.$syspriv;
3840: $$allroles{$spec.'./'}.=':'.$syspriv;
3841: }
3842: if ($tdomain ne '') {
3843: if (defined($dompriv)) {
3844: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3845: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3846: }
3847: if (($trest ne '') && (defined($coursepriv))) {
3848: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3849: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3850: }
3851: }
3852: }
3853: }
3854: }
3855:
3856: sub group_roleprivs {
3857: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3858: my $access = 1;
3859: my $now = time;
3860: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3861: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3862: if ($access) {
3863: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3864: $$allgroups{$course}{$group} .=':'.$group_privs;
3865: }
3866: }
3867:
3868: sub standard_roleprivs {
3869: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3870: if (defined($pr{$trole.':s'})) {
3871: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3872: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3873: }
3874: if ($tdomain ne '') {
3875: if (defined($pr{$trole.':d'})) {
3876: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3877: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3878: }
3879: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3880: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3881: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3882: }
3883: }
3884: }
3885:
3886: sub set_userprivs {
3887: my ($userroles,$allroles,$allgroups) = @_;
3888: my $author=0;
3889: my $adv=0;
3890: my %grouproles = ();
3891: if (keys(%{$allgroups}) > 0) {
3892: foreach my $role (keys(%{$allroles})) {
3893: my ($trole,$area,$sec,$extendedarea);
3894: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3895: $trole = $1;
3896: $area = $2;
3897: $sec = $3;
3898: $extendedarea = $area.$sec;
3899: if (exists($$allgroups{$area})) {
3900: foreach my $group (keys(%{$$allgroups{$area}})) {
3901: my $spec = $trole.'.'.$extendedarea;
3902: $grouproles{$spec.'.'.$area.'/'.$group} =
3903: $$allgroups{$area}{$group};
3904: }
3905: }
3906: }
3907: }
3908: }
3909: foreach my $group (keys(%grouproles)) {
3910: $$allroles{$group} = $grouproles{$group};
3911: }
3912: foreach my $role (keys(%{$allroles})) {
3913: my %thesepriv;
3914: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3915: foreach my $item (split(/:/,$$allroles{$role})) {
3916: if ($item ne '') {
3917: my ($privilege,$restrictions)=split(/&/,$item);
3918: if ($restrictions eq '') {
3919: $thesepriv{$privilege}='F';
3920: } elsif ($thesepriv{$privilege} ne 'F') {
3921: $thesepriv{$privilege}.=$restrictions;
3922: }
3923: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3924: }
3925: }
3926: my $thesestr='';
3927: foreach my $priv (keys(%thesepriv)) {
3928: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3929: }
3930: $userroles->{'user.priv.'.$role} = $thesestr;
3931: }
3932: return ($author,$adv);
3933: }
3934:
3935: sub role_status {
3936: my ($rolekey,$then,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
3937: my @pwhere = ();
3938: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
3939: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
3940: unless (!defined($$role) || $$role eq '') {
3941: $$where=join('.',@pwhere);
3942: $$trolecode=$$role.'.'.$$where;
3943: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
3944: $$tstatus='is';
3945: if ($$tstart && $$tstart>$then) {
3946: $$tstatus='future';
3947: if ($$tstart && $$tstart>$refresh) {
3948: if ($$tstart<$now) {
3949: if (($$where ne '') && ($$role ne '')) {
3950: my (%allroles,%allgroups,$group_privs);
3951: my %userroles = (
3952: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
3953: );
3954: my $spec=$$role.'.'.$$where;
3955: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
3956: if ($$role eq 'gr') {
3957: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
3958: $env{'user.name'})=@_;
3959: my ($trole) = split('_',$role,1);
3960: (undef,my $group_privs) = split(/\//,$trole);
3961: $group_privs = &unescape($group_privs);
3962: }
3963: if ($$role =~ /^cr\//) {
3964: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
3965: } elsif ($$role eq 'gr') {
3966: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
3967: $env{'user.name'});
3968: my $trole = split('_',$rolehash{$$where.'_'.$$role},1);
3969: (undef,my $group_privs) = split(/\//,$trole);
3970: $group_privs = &unescape($group_privs);
3971: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
3972: } else {
3973: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
3974: }
3975: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups);
3976: &appenv(\%userroles,[$$role,'cm']);
3977: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
3978: $$tstatus = 'is';
3979: }
3980: }
3981: }
3982: }
3983: if ($$tend) {
3984: if ($$tend<$then) {
3985: $$tstatus='expired';
3986: } elsif ($$tend<$now) {
3987: $$tstatus='will_not';
3988: }
3989: }
3990: }
3991: }
3992: }
3993:
3994: sub check_adhoc_privs {
3995: my ($cdom,$cnum,$then,$refresh,$now,$checkrole) = @_;
3996: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
3997: if ($env{$cckey}) {
3998: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
3999: &role_status($cckey,$then,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4000: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4001: &set_adhoc_privileges($cdom,$cnum,$checkrole);
4002: }
4003: } else {
4004: &set_adhoc_privileges($cdom,$cnum,$checkrole);
4005: }
4006: }
4007:
4008: sub set_adhoc_privileges {
4009: # role can be cc or ca
4010: my ($dcdom,$pickedcourse,$role) = @_;
4011: my $area = '/'.$dcdom.'/'.$pickedcourse;
4012: my $spec = $role.'.'.$area;
4013: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4014: $env{'user.name'});
4015: my %ccrole = ();
4016: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4017: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4018: &appenv(\%userroles,[$role,'cm']);
4019: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4020: &appenv( {'request.role' => $spec,
4021: 'request.role.domain' => $dcdom,
4022: 'request.course.sec' => ''
4023: }
4024: );
4025: my $tadv=0;
4026: if (&allowed('adv') eq 'F') { $tadv=1; }
4027: &appenv({'request.role.adv' => $tadv});
4028: }
4029:
4030: # --------------------------------------------------------------- get interface
4031:
4032: sub get {
4033: my ($namespace,$storearr,$udomain,$uname)=@_;
4034: my $items='';
4035: foreach my $item (@$storearr) {
4036: $items.=&escape($item).'&';
4037: }
4038: $items=~s/\&$//;
4039: if (!$udomain) { $udomain=$env{'user.domain'}; }
4040: if (!$uname) { $uname=$env{'user.name'}; }
4041: my $uhome=&homeserver($uname,$udomain);
4042:
4043: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4044: my @pairs=split(/\&/,$rep);
4045: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4046: return @pairs;
4047: }
4048: my %returnhash=();
4049: my $i=0;
4050: foreach my $item (@$storearr) {
4051: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4052: $i++;
4053: }
4054: return %returnhash;
4055: }
4056:
4057: # --------------------------------------------------------------- del interface
4058:
4059: sub del {
4060: my ($namespace,$storearr,$udomain,$uname)=@_;
4061: my $items='';
4062: foreach my $item (@$storearr) {
4063: $items.=&escape($item).'&';
4064: }
4065:
4066: $items=~s/\&$//;
4067: if (!$udomain) { $udomain=$env{'user.domain'}; }
4068: if (!$uname) { $uname=$env{'user.name'}; }
4069: my $uhome=&homeserver($uname,$udomain);
4070: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4071: }
4072:
4073: # -------------------------------------------------------------- dump interface
4074:
4075: sub dump {
4076: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4077: if (!$udomain) { $udomain=$env{'user.domain'}; }
4078: if (!$uname) { $uname=$env{'user.name'}; }
4079: my $uhome=&homeserver($uname,$udomain);
4080: if ($regexp) {
4081: $regexp=&escape($regexp);
4082: } else {
4083: $regexp='.';
4084: }
4085: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4086: my @pairs=split(/\&/,$rep);
4087: my %returnhash=();
4088: foreach my $item (@pairs) {
4089: my ($key,$value)=split(/=/,$item,2);
4090: $key = &unescape($key);
4091: next if ($key =~ /^error: 2 /);
4092: $returnhash{$key}=&thaw_unescape($value);
4093: }
4094: return %returnhash;
4095: }
4096:
4097: # --------------------------------------------------------- dumpstore interface
4098:
4099: sub dumpstore {
4100: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4101: if (!$udomain) { $udomain=$env{'user.domain'}; }
4102: if (!$uname) { $uname=$env{'user.name'}; }
4103: my $uhome=&homeserver($uname,$udomain);
4104: if ($regexp) {
4105: $regexp=&escape($regexp);
4106: } else {
4107: $regexp='.';
4108: }
4109: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4110: my @pairs=split(/\&/,$rep);
4111: my %returnhash=();
4112: foreach my $item (@pairs) {
4113: my ($key,$value)=split(/=/,$item,2);
4114: next if ($key =~ /^error: 2 /);
4115: $returnhash{$key}=&thaw_unescape($value);
4116: }
4117: return %returnhash;
4118: }
4119:
4120: # -------------------------------------------------------------- keys interface
4121:
4122: sub getkeys {
4123: my ($namespace,$udomain,$uname)=@_;
4124: if (!$udomain) { $udomain=$env{'user.domain'}; }
4125: if (!$uname) { $uname=$env{'user.name'}; }
4126: my $uhome=&homeserver($uname,$udomain);
4127: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4128: my @keyarray=();
4129: foreach my $key (split(/\&/,$rep)) {
4130: next if ($key =~ /^error: 2 /);
4131: push(@keyarray,&unescape($key));
4132: }
4133: return @keyarray;
4134: }
4135:
4136: # --------------------------------------------------------------- currentdump
4137: sub currentdump {
4138: my ($courseid,$sdom,$sname)=@_;
4139: $courseid = $env{'request.course.id'} if (! defined($courseid));
4140: $sdom = $env{'user.domain'} if (! defined($sdom));
4141: $sname = $env{'user.name'} if (! defined($sname));
4142: my $uhome = &homeserver($sname,$sdom);
4143: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4144: return if ($rep =~ /^(error:|no_such_host)/);
4145: #
4146: my %returnhash=();
4147: #
4148: if ($rep eq "unknown_cmd") {
4149: # an old lond will not know currentdump
4150: # Do a dump and make it look like a currentdump
4151: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4152: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4153: my %hash = @tmp;
4154: @tmp=();
4155: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4156: } else {
4157: my @pairs=split(/\&/,$rep);
4158: foreach my $pair (@pairs) {
4159: my ($key,$value)=split(/=/,$pair,2);
4160: my ($symb,$param) = split(/:/,$key);
4161: $returnhash{&unescape($symb)}->{&unescape($param)} =
4162: &thaw_unescape($value);
4163: }
4164: }
4165: return %returnhash;
4166: }
4167:
4168: sub convert_dump_to_currentdump{
4169: my %hash = %{shift()};
4170: my %returnhash;
4171: # Code ripped from lond, essentially. The only difference
4172: # here is the unescaping done by lonnet::dump(). Conceivably
4173: # we might run in to problems with parameter names =~ /^v\./
4174: while (my ($key,$value) = each(%hash)) {
4175: my ($v,$symb,$param) = split(/:/,$key);
4176: $symb = &unescape($symb);
4177: $param = &unescape($param);
4178: next if ($v eq 'version' || $symb eq 'keys');
4179: next if (exists($returnhash{$symb}) &&
4180: exists($returnhash{$symb}->{$param}) &&
4181: $returnhash{$symb}->{'v.'.$param} > $v);
4182: $returnhash{$symb}->{$param}=$value;
4183: $returnhash{$symb}->{'v.'.$param}=$v;
4184: }
4185: #
4186: # Remove all of the keys in the hashes which keep track of
4187: # the version of the parameter.
4188: while (my ($symb,$param_hash) = each(%returnhash)) {
4189: # use a foreach because we are going to delete from the hash.
4190: foreach my $key (keys(%$param_hash)) {
4191: delete($param_hash->{$key}) if ($key =~ /^v\./);
4192: }
4193: }
4194: return \%returnhash;
4195: }
4196:
4197: # ------------------------------------------------------ critical inc interface
4198:
4199: sub cinc {
4200: return &inc(@_,'critical');
4201: }
4202:
4203: # --------------------------------------------------------------- inc interface
4204:
4205: sub inc {
4206: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4207: if (!$udomain) { $udomain=$env{'user.domain'}; }
4208: if (!$uname) { $uname=$env{'user.name'}; }
4209: my $uhome=&homeserver($uname,$udomain);
4210: my $items='';
4211: if (! ref($store)) {
4212: # got a single value, so use that instead
4213: $items = &escape($store).'=&';
4214: } elsif (ref($store) eq 'SCALAR') {
4215: $items = &escape($$store).'=&';
4216: } elsif (ref($store) eq 'ARRAY') {
4217: $items = join('=&',map {&escape($_);} @{$store});
4218: } elsif (ref($store) eq 'HASH') {
4219: while (my($key,$value) = each(%{$store})) {
4220: $items.= &escape($key).'='.&escape($value).'&';
4221: }
4222: }
4223: $items=~s/\&$//;
4224: if ($critical) {
4225: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4226: } else {
4227: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4228: }
4229: }
4230:
4231: # --------------------------------------------------------------- put interface
4232:
4233: sub put {
4234: my ($namespace,$storehash,$udomain,$uname)=@_;
4235: if (!$udomain) { $udomain=$env{'user.domain'}; }
4236: if (!$uname) { $uname=$env{'user.name'}; }
4237: my $uhome=&homeserver($uname,$udomain);
4238: my $items='';
4239: foreach my $item (keys(%$storehash)) {
4240: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4241: }
4242: $items=~s/\&$//;
4243: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4244: }
4245:
4246: # ------------------------------------------------------------ newput interface
4247:
4248: sub newput {
4249: my ($namespace,$storehash,$udomain,$uname)=@_;
4250: if (!$udomain) { $udomain=$env{'user.domain'}; }
4251: if (!$uname) { $uname=$env{'user.name'}; }
4252: my $uhome=&homeserver($uname,$udomain);
4253: my $items='';
4254: foreach my $key (keys(%$storehash)) {
4255: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4256: }
4257: $items=~s/\&$//;
4258: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4259: }
4260:
4261: # --------------------------------------------------------- putstore interface
4262:
4263: sub putstore {
4264: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4265: if (!$udomain) { $udomain=$env{'user.domain'}; }
4266: if (!$uname) { $uname=$env{'user.name'}; }
4267: my $uhome=&homeserver($uname,$udomain);
4268: my $items='';
4269: foreach my $key (keys(%$storehash)) {
4270: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4271: }
4272: $items=~s/\&$//;
4273: my $esc_symb=&escape($symb);
4274: my $esc_v=&escape($version);
4275: my $reply =
4276: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4277: $uhome);
4278: if ($reply eq 'unknown_cmd') {
4279: # gfall back to way things use to be done
4280: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4281: $uname);
4282: }
4283: return $reply;
4284: }
4285:
4286: sub old_putstore {
4287: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4288: if (!$udomain) { $udomain=$env{'user.domain'}; }
4289: if (!$uname) { $uname=$env{'user.name'}; }
4290: my $uhome=&homeserver($uname,$udomain);
4291: my %newstorehash;
4292: foreach my $item (keys(%$storehash)) {
4293: my $key = $version.':'.&escape($symb).':'.$item;
4294: $newstorehash{$key} = $storehash->{$item};
4295: }
4296: my $items='';
4297: my %allitems = ();
4298: foreach my $item (keys(%newstorehash)) {
4299: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4300: my $key = $1.':keys:'.$2;
4301: $allitems{$key} .= $3.':';
4302: }
4303: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4304: }
4305: foreach my $item (keys(%allitems)) {
4306: $allitems{$item} =~ s/\:$//;
4307: $items.= $item.'='.$allitems{$item}.'&';
4308: }
4309: $items=~s/\&$//;
4310: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4311: }
4312:
4313: # ------------------------------------------------------ critical put interface
4314:
4315: sub cput {
4316: my ($namespace,$storehash,$udomain,$uname)=@_;
4317: if (!$udomain) { $udomain=$env{'user.domain'}; }
4318: if (!$uname) { $uname=$env{'user.name'}; }
4319: my $uhome=&homeserver($uname,$udomain);
4320: my $items='';
4321: foreach my $item (keys(%$storehash)) {
4322: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4323: }
4324: $items=~s/\&$//;
4325: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4326: }
4327:
4328: # -------------------------------------------------------------- eget interface
4329:
4330: sub eget {
4331: my ($namespace,$storearr,$udomain,$uname)=@_;
4332: my $items='';
4333: foreach my $item (@$storearr) {
4334: $items.=&escape($item).'&';
4335: }
4336: $items=~s/\&$//;
4337: if (!$udomain) { $udomain=$env{'user.domain'}; }
4338: if (!$uname) { $uname=$env{'user.name'}; }
4339: my $uhome=&homeserver($uname,$udomain);
4340: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4341: my @pairs=split(/\&/,$rep);
4342: my %returnhash=();
4343: my $i=0;
4344: foreach my $item (@$storearr) {
4345: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4346: $i++;
4347: }
4348: return %returnhash;
4349: }
4350:
4351: # ------------------------------------------------------------ tmpput interface
4352: sub tmpput {
4353: my ($storehash,$server,$context)=@_;
4354: my $items='';
4355: foreach my $item (keys(%$storehash)) {
4356: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4357: }
4358: $items=~s/\&$//;
4359: if (defined($context)) {
4360: $items .= ':'.&escape($context);
4361: }
4362: return &reply("tmpput:$items",$server);
4363: }
4364:
4365: # ------------------------------------------------------------ tmpget interface
4366: sub tmpget {
4367: my ($token,$server)=@_;
4368: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4369: my $rep=&reply("tmpget:$token",$server);
4370: my %returnhash;
4371: foreach my $item (split(/\&/,$rep)) {
4372: my ($key,$value)=split(/=/,$item);
4373: next if ($key =~ /^error: 2 /);
4374: $returnhash{&unescape($key)}=&thaw_unescape($value);
4375: }
4376: return %returnhash;
4377: }
4378:
4379: # ------------------------------------------------------------ tmpget interface
4380: sub tmpdel {
4381: my ($token,$server)=@_;
4382: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4383: return &reply("tmpdel:$token",$server);
4384: }
4385:
4386: # -------------------------------------------------- portfolio access checking
4387:
4388: sub portfolio_access {
4389: my ($requrl) = @_;
4390: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4391: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4392: if ($result) {
4393: my %setters;
4394: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4395: my ($startblock,$endblock) =
4396: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4397: if ($startblock && $endblock) {
4398: return 'B';
4399: }
4400: } else {
4401: my ($startblock,$endblock) =
4402: &Apache::loncommon::blockcheck(\%setters,'port');
4403: if ($startblock && $endblock) {
4404: return 'B';
4405: }
4406: }
4407: }
4408: if ($result eq 'ok') {
4409: return 'F';
4410: } elsif ($result =~ /^[^:]+:guest_/) {
4411: return 'A';
4412: }
4413: return '';
4414: }
4415:
4416: sub get_portfolio_access {
4417: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4418:
4419: if (!ref($access_hash)) {
4420: my $current_perms = &get_portfile_permissions($udom,$unum);
4421: my %access_controls = &get_access_controls($current_perms,$group,
4422: $file_name);
4423: $access_hash = $access_controls{$file_name};
4424: }
4425:
4426: my ($public,$guest,@domains,@users,@courses,@groups);
4427: my $now = time;
4428: if (ref($access_hash) eq 'HASH') {
4429: foreach my $key (keys(%{$access_hash})) {
4430: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4431: if ($start > $now) {
4432: next;
4433: }
4434: if ($end && $end<$now) {
4435: next;
4436: }
4437: if ($scope eq 'public') {
4438: $public = $key;
4439: last;
4440: } elsif ($scope eq 'guest') {
4441: $guest = $key;
4442: } elsif ($scope eq 'domains') {
4443: push(@domains,$key);
4444: } elsif ($scope eq 'users') {
4445: push(@users,$key);
4446: } elsif ($scope eq 'course') {
4447: push(@courses,$key);
4448: } elsif ($scope eq 'group') {
4449: push(@groups,$key);
4450: }
4451: }
4452: if ($public) {
4453: return 'ok';
4454: }
4455: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4456: if ($guest) {
4457: return $guest;
4458: }
4459: } else {
4460: if (@domains > 0) {
4461: foreach my $domkey (@domains) {
4462: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4463: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4464: return 'ok';
4465: }
4466: }
4467: }
4468: }
4469: if (@users > 0) {
4470: foreach my $userkey (@users) {
4471: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4472: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4473: if (ref($item) eq 'HASH') {
4474: if (($item->{'uname'} eq $env{'user.name'}) &&
4475: ($item->{'udom'} eq $env{'user.domain'})) {
4476: return 'ok';
4477: }
4478: }
4479: }
4480: }
4481: }
4482: }
4483: my %roleshash;
4484: my @courses_and_groups = @courses;
4485: push(@courses_and_groups,@groups);
4486: if (@courses_and_groups > 0) {
4487: my (%allgroups,%allroles);
4488: my ($start,$end,$role,$sec,$group);
4489: foreach my $envkey (%env) {
4490: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4491: my $cid = $2.'_'.$3;
4492: if ($1 eq 'gr') {
4493: $group = $4;
4494: $allgroups{$cid}{$group} = $env{$envkey};
4495: } else {
4496: if ($4 eq '') {
4497: $sec = 'none';
4498: } else {
4499: $sec = $4;
4500: }
4501: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4502: }
4503: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4504: my $cid = $2.'_'.$3;
4505: if ($4 eq '') {
4506: $sec = 'none';
4507: } else {
4508: $sec = $4;
4509: }
4510: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4511: }
4512: }
4513: if (keys(%allroles) == 0) {
4514: return;
4515: }
4516: foreach my $key (@courses_and_groups) {
4517: my %content = %{$$access_hash{$key}};
4518: my $cnum = $content{'number'};
4519: my $cdom = $content{'domain'};
4520: my $cid = $cdom.'_'.$cnum;
4521: if (!exists($allroles{$cid})) {
4522: next;
4523: }
4524: foreach my $role_id (keys(%{$content{'roles'}})) {
4525: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4526: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4527: my @status = @{$content{'roles'}{$role_id}{'access'}};
4528: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4529: foreach my $role (keys(%{$allroles{$cid}})) {
4530: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4531: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4532: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4533: if (grep/^all$/,@sections) {
4534: return 'ok';
4535: } else {
4536: if (grep/^$sec$/,@sections) {
4537: return 'ok';
4538: }
4539: }
4540: }
4541: }
4542: if (keys(%{$allgroups{$cid}}) == 0) {
4543: if (grep/^none$/,@groups) {
4544: return 'ok';
4545: }
4546: } else {
4547: if (grep/^all$/,@groups) {
4548: return 'ok';
4549: }
4550: foreach my $group (keys(%{$allgroups{$cid}})) {
4551: if (grep/^$group$/,@groups) {
4552: return 'ok';
4553: }
4554: }
4555: }
4556: }
4557: }
4558: }
4559: }
4560: }
4561: if ($guest) {
4562: return $guest;
4563: }
4564: }
4565: }
4566: return;
4567: }
4568:
4569: sub course_group_datechecker {
4570: my ($dates,$now,$status) = @_;
4571: my ($start,$end) = split(/\./,$dates);
4572: if (!$start && !$end) {
4573: return 'ok';
4574: }
4575: if (grep/^active$/,@{$status}) {
4576: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4577: return 'ok';
4578: }
4579: }
4580: if (grep/^previous$/,@{$status}) {
4581: if ($end > $now ) {
4582: return 'ok';
4583: }
4584: }
4585: if (grep/^future$/,@{$status}) {
4586: if ($start > $now) {
4587: return 'ok';
4588: }
4589: }
4590: return;
4591: }
4592:
4593: sub parse_portfolio_url {
4594: my ($url) = @_;
4595:
4596: my ($type,$udom,$unum,$group,$file_name);
4597:
4598: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4599: $type = 1;
4600: $udom = $1;
4601: $unum = $2;
4602: $file_name = $3;
4603: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4604: $type = 2;
4605: $udom = $1;
4606: $unum = $2;
4607: $group = $3;
4608: $file_name = $3.'/'.$4;
4609: }
4610: if (wantarray) {
4611: return ($type,$udom,$unum,$file_name,$group);
4612: }
4613: return $type;
4614: }
4615:
4616: sub is_portfolio_url {
4617: my ($url) = @_;
4618: return scalar(&parse_portfolio_url($url));
4619: }
4620:
4621: sub is_portfolio_file {
4622: my ($file) = @_;
4623: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4624: return 1;
4625: }
4626: return;
4627: }
4628:
4629: sub usertools_access {
4630: my ($uname,$udom,$tool,$action,$context) = @_;
4631: my ($access,%tools);
4632: if ($context eq '') {
4633: $context = 'tools';
4634: }
4635: if ($context eq 'requestcourses') {
4636: %tools = (
4637: official => 1,
4638: unofficial => 1,
4639: community => 1,
4640: );
4641: } else {
4642: %tools = (
4643: aboutme => 1,
4644: blog => 1,
4645: portfolio => 1,
4646: );
4647: }
4648: return if (!defined($tools{$tool}));
4649:
4650: if ((!defined($udom)) || (!defined($uname))) {
4651: $udom = $env{'user.domain'};
4652: $uname = $env{'user.name'};
4653: }
4654:
4655: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
4656: if ($action ne 'reload') {
4657: if ($context eq 'requestcourses') {
4658: return $env{'environment.canrequest.'.$tool};
4659: } else {
4660: return $env{'environment.availabletools.'.$tool};
4661: }
4662: }
4663: }
4664:
4665: my ($toolstatus,$inststatus);
4666:
4667: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
4668: ($action ne 'reload')) {
4669: $toolstatus = $env{'environment.'.$context.'.'.$tool};
4670: $inststatus = $env{'environment.inststatus'};
4671: } else {
4672: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool);
4673: $toolstatus = $userenv{$context.'.'.$tool};
4674: $inststatus = $userenv{'inststatus'};
4675: }
4676:
4677: if ($toolstatus ne '') {
4678: if ($toolstatus) {
4679: $access = 1;
4680: } else {
4681: $access = 0;
4682: }
4683: return $access;
4684: }
4685:
4686: my $is_adv = &is_advanced_user($udom,$uname);
4687: my %domdef = &get_domain_defaults($udom);
4688: if (ref($domdef{$tool}) eq 'HASH') {
4689: if ($is_adv) {
4690: if ($domdef{$tool}{'_LC_adv'} ne '') {
4691: if ($domdef{$tool}{'_LC_adv'}) {
4692: $access = 1;
4693: } else {
4694: $access = 0;
4695: }
4696: return $access;
4697: }
4698: }
4699: if ($inststatus ne '') {
4700: my ($hasaccess,$hasnoaccess);
4701: foreach my $affiliation (split(/:/,$inststatus)) {
4702: if ($domdef{$tool}{$affiliation} ne '') {
4703: if ($domdef{$tool}{$affiliation}) {
4704: $hasaccess = 1;
4705: } else {
4706: $hasnoaccess = 1;
4707: }
4708: }
4709: }
4710: if ($hasaccess || $hasnoaccess) {
4711: if ($hasaccess) {
4712: $access = 1;
4713: } elsif ($hasnoaccess) {
4714: $access = 0;
4715: }
4716: return $access;
4717: }
4718: } else {
4719: if ($domdef{$tool}{'default'} ne '') {
4720: if ($domdef{$tool}{'default'}) {
4721: $access = 1;
4722: } elsif ($domdef{$tool}{'default'} == 0) {
4723: $access = 0;
4724: }
4725: return $access;
4726: }
4727: }
4728: } else {
4729: if ($context eq 'tools') {
4730: $access = 1;
4731: } else {
4732: $access = 0;
4733: }
4734: return $access;
4735: }
4736: }
4737:
4738: sub is_advanced_user {
4739: my ($udom,$uname) = @_;
4740: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
4741: my %allroles;
4742: my $is_adv;
4743: foreach my $role (keys(%roleshash)) {
4744: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
4745: my $area = '/'.$tdomain.'/'.$trest;
4746: if ($sec ne '') {
4747: $area .= '/'.$sec;
4748: }
4749: if (($area ne '') && ($trole ne '')) {
4750: my $spec=$trole.'.'.$area;
4751: if ($trole =~ /^cr\//) {
4752: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4753: } elsif ($trole ne 'gr') {
4754: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4755: }
4756: }
4757: }
4758: foreach my $role (keys(%allroles)) {
4759: last if ($is_adv);
4760: foreach my $item (split(/:/,$allroles{$role})) {
4761: if ($item ne '') {
4762: my ($privilege,$restrictions)=split(/&/,$item);
4763: if ($privilege eq 'adv') {
4764: $is_adv = 1;
4765: last;
4766: }
4767: }
4768: }
4769: }
4770: return $is_adv;
4771: }
4772:
4773: # ---------------------------------------------- Custom access rule evaluation
4774:
4775: sub customaccess {
4776: my ($priv,$uri)=@_;
4777: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4778: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4779: $udom = &LONCAPA::clean_domain($udom);
4780: $ucrs = &LONCAPA::clean_username($ucrs);
4781: my $access=0;
4782: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4783: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4784: if ($type eq 'user') {
4785: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4786: my ($tdom,$tuname)=split(m{/},$scope);
4787: if ($tdom) {
4788: if ($tdom ne $env{'user.domain'}) { next; }
4789: }
4790: if ($tuname) {
4791: if ($tuname ne $env{'user.name'}) { next; }
4792: }
4793: $access=($effect eq 'allow');
4794: last;
4795: }
4796: } else {
4797: if ($role) {
4798: if ($role ne $urole) { next; }
4799: }
4800: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4801: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4802: if ($tdom) {
4803: if ($tdom ne $udom) { next; }
4804: }
4805: if ($tcrs) {
4806: if ($tcrs ne $ucrs) { next; }
4807: }
4808: if ($tsec) {
4809: if ($tsec ne $usec) { next; }
4810: }
4811: $access=($effect eq 'allow');
4812: last;
4813: }
4814: if ($realm eq '' && $role eq '') {
4815: $access=($effect eq 'allow');
4816: }
4817: }
4818: }
4819: return $access;
4820: }
4821:
4822: # ------------------------------------------------- Check for a user privilege
4823:
4824: sub allowed {
4825: my ($priv,$uri,$symb,$role)=@_;
4826: my $ver_orguri=$uri;
4827: $uri=&deversion($uri);
4828: my $orguri=$uri;
4829: $uri=&declutter($uri);
4830:
4831: if ($priv eq 'evb') {
4832: # Evade communication block restrictions for specified role in a course
4833: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4834: return $1;
4835: } else {
4836: return;
4837: }
4838: }
4839:
4840: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4841: # Free bre access to adm and meta resources
4842: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4843: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4844: && ($priv eq 'bre')) {
4845: return 'F';
4846: }
4847:
4848: # Free bre access to user's own portfolio contents
4849: my ($space,$domain,$name,@dir)=split('/',$uri);
4850: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4851: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4852: my %setters;
4853: my ($startblock,$endblock) =
4854: &Apache::loncommon::blockcheck(\%setters,'port');
4855: if ($startblock && $endblock) {
4856: return 'B';
4857: } else {
4858: return 'F';
4859: }
4860: }
4861:
4862: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4863: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4864: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4865: if (exists($env{'request.course.id'})) {
4866: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4867: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4868: if (($domain eq $cdom) && ($name eq $cnum)) {
4869: my $courseprivid=$env{'request.course.id'};
4870: $courseprivid=~s/\_/\//;
4871: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4872: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4873: return $1;
4874: } else {
4875: if ($env{'request.course.sec'}) {
4876: $courseprivid.='/'.$env{'request.course.sec'};
4877: }
4878: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4879: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4880: return $2;
4881: }
4882: }
4883: }
4884: }
4885: }
4886:
4887: # Free bre to public access
4888:
4889: if ($priv eq 'bre') {
4890: my $copyright=&metadata($uri,'copyright');
4891: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4892: return 'F';
4893: }
4894: if ($copyright eq 'priv') {
4895: $uri=~/([^\/]+)\/([^\/]+)\//;
4896: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4897: return '';
4898: }
4899: }
4900: if ($copyright eq 'domain') {
4901: $uri=~/([^\/]+)\/([^\/]+)\//;
4902: unless (($env{'user.domain'} eq $1) ||
4903: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4904: return '';
4905: }
4906: }
4907: if ($env{'request.role'}=~ /li\.\//) {
4908: # Library role, so allow browsing of resources in this domain.
4909: return 'F';
4910: }
4911: if ($copyright eq 'custom') {
4912: unless (&customaccess($priv,$uri)) { return ''; }
4913: }
4914: }
4915: # Domain coordinator is trying to create a course
4916: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4917: # uri is the requested domain in this case.
4918: # comparison to 'request.role.domain' shows if the user has selected
4919: # a role of dc for the domain in question.
4920: return 'F' if ($uri eq $env{'request.role.domain'});
4921: }
4922:
4923: my $thisallowed='';
4924: my $statecond=0;
4925: my $courseprivid='';
4926:
4927: # Course
4928:
4929: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4930: $thisallowed.=$1;
4931: }
4932:
4933: # Domain
4934:
4935: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4936: =~/\Q$priv\E\&([^\:]*)/) {
4937: $thisallowed.=$1;
4938: }
4939:
4940: # Course: uri itself is a course
4941: my $courseuri=$uri;
4942: $courseuri=~s/\_(\d)/\/$1/;
4943: $courseuri=~s/^([^\/])/\/$1/;
4944:
4945: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4946: =~/\Q$priv\E\&([^\:]*)/) {
4947: $thisallowed.=$1;
4948: }
4949:
4950: # URI is an uploaded document for this course, default permissions don't matter
4951: # not allowing 'edit' access (editupload) to uploaded course docs
4952: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4953: $thisallowed='';
4954: my ($match)=&is_on_map($uri);
4955: if ($match) {
4956: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4957: =~/\Q$priv\E\&([^\:]*)/) {
4958: $thisallowed.=$1;
4959: }
4960: } else {
4961: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4962: if ($refuri) {
4963: if ($refuri =~ m|^/adm/|) {
4964: $thisallowed='F';
4965: } else {
4966: $refuri=&declutter($refuri);
4967: my ($match) = &is_on_map($refuri);
4968: if ($match) {
4969: $thisallowed='F';
4970: }
4971: }
4972: }
4973: }
4974: }
4975:
4976: if ($priv eq 'bre'
4977: && $thisallowed ne 'F'
4978: && $thisallowed ne '2'
4979: && &is_portfolio_url($uri)) {
4980: $thisallowed = &portfolio_access($uri);
4981: }
4982:
4983: # Full access at system, domain or course-wide level? Exit.
4984: if ($thisallowed=~/F/) {
4985: return 'F';
4986: }
4987:
4988: # If this is generating or modifying users, exit with special codes
4989:
4990: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4991: if (($priv eq 'cca') || ($priv eq 'caa')) {
4992: my ($audom,$auname)=split('/',$uri);
4993: # no author name given, so this just checks on the general right to make a co-author in this domain
4994: unless ($auname) { return $thisallowed; }
4995: # an author name is given, so we are about to actually make a co-author for a certain account
4996: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4997: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4998: ($audom ne $env{'request.role.domain'}))) { return ''; }
4999: }
5000: return $thisallowed;
5001: }
5002: #
5003: # Gathered so far: system, domain and course wide privileges
5004: #
5005: # Course: See if uri or referer is an individual resource that is part of
5006: # the course
5007:
5008: if ($env{'request.course.id'}) {
5009:
5010: $courseprivid=$env{'request.course.id'};
5011: if ($env{'request.course.sec'}) {
5012: $courseprivid.='/'.$env{'request.course.sec'};
5013: }
5014: $courseprivid=~s/\_/\//;
5015: my $checkreferer=1;
5016: my ($match,$cond)=&is_on_map($uri);
5017: if ($match) {
5018: $statecond=$cond;
5019: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5020: =~/\Q$priv\E\&([^\:]*)/) {
5021: $thisallowed.=$1;
5022: $checkreferer=0;
5023: }
5024: }
5025:
5026: if ($checkreferer) {
5027: my $refuri=$env{'httpref.'.$orguri};
5028: unless ($refuri) {
5029: foreach my $key (keys(%env)) {
5030: if ($key=~/^httpref\..*\*/) {
5031: my $pattern=$key;
5032: $pattern=~s/^httpref\.\/res\///;
5033: $pattern=~s/\*/\[\^\/\]\+/g;
5034: $pattern=~s/\//\\\//g;
5035: if ($orguri=~/$pattern/) {
5036: $refuri=$env{$key};
5037: }
5038: }
5039: }
5040: }
5041:
5042: if ($refuri) {
5043: $refuri=&declutter($refuri);
5044: my ($match,$cond)=&is_on_map($refuri);
5045: if ($match) {
5046: my $refstatecond=$cond;
5047: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5048: =~/\Q$priv\E\&([^\:]*)/) {
5049: $thisallowed.=$1;
5050: $uri=$refuri;
5051: $statecond=$refstatecond;
5052: }
5053: }
5054: }
5055: }
5056: }
5057:
5058: #
5059: # Gathered now: all privileges that could apply, and condition number
5060: #
5061: #
5062: # Full or no access?
5063: #
5064:
5065: if ($thisallowed=~/F/) {
5066: return 'F';
5067: }
5068:
5069: unless ($thisallowed) {
5070: return '';
5071: }
5072:
5073: # Restrictions exist, deal with them
5074: #
5075: # C:according to course preferences
5076: # R:according to resource settings
5077: # L:unless locked
5078: # X:according to user session state
5079: #
5080:
5081: # Possibly locked functionality, check all courses
5082: # Locks might take effect only after 10 minutes cache expiration for other
5083: # courses, and 2 minutes for current course
5084:
5085: my $envkey;
5086: if ($thisallowed=~/L/) {
5087: foreach $envkey (keys(%env)) {
5088: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5089: my $courseid=$2;
5090: my $roleid=$1.'.'.$2;
5091: $courseid=~s/^\///;
5092: my $expiretime=600;
5093: if ($env{'request.role'} eq $roleid) {
5094: $expiretime=120;
5095: }
5096: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5097: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5098: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5099: &coursedescription($courseid,{'freshen_cache' => 1});
5100: }
5101: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5102: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5103: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5104: &log($env{'user.domain'},$env{'user.name'},
5105: $env{'user.home'},
5106: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5107: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5108: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5109: return '';
5110: }
5111: }
5112: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5113: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5114: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5115: &log($env{'user.domain'},$env{'user.name'},
5116: $env{'user.home'},
5117: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5118: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5119: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5120: return '';
5121: }
5122: }
5123: }
5124: }
5125: }
5126:
5127: #
5128: # Rest of the restrictions depend on selected course
5129: #
5130:
5131: unless ($env{'request.course.id'}) {
5132: if ($thisallowed eq 'A') {
5133: return 'A';
5134: } elsif ($thisallowed eq 'B') {
5135: return 'B';
5136: } else {
5137: return '1';
5138: }
5139: }
5140:
5141: #
5142: # Now user is definitely in a course
5143: #
5144:
5145:
5146: # Course preferences
5147:
5148: if ($thisallowed=~/C/) {
5149: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5150: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5151: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5152: =~/\Q$rolecode\E/) {
5153: if ($priv ne 'pch') {
5154: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5155: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5156: $env{'request.course.id'});
5157: }
5158: return '';
5159: }
5160:
5161: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5162: =~/\Q$unamedom\E/) {
5163: if ($priv ne 'pch') {
5164: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5165: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5166: $env{'request.course.id'});
5167: }
5168: return '';
5169: }
5170: }
5171:
5172: # Resource preferences
5173:
5174: if ($thisallowed=~/R/) {
5175: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5176: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5177: if ($priv ne 'pch') {
5178: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5179: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5180: }
5181: return '';
5182: }
5183: }
5184:
5185: # Restricted by state or randomout?
5186:
5187: if ($thisallowed=~/X/) {
5188: if ($env{'acc.randomout'}) {
5189: if (!$symb) { $symb=&symbread($uri,1); }
5190: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5191: return '';
5192: }
5193: }
5194: if (&condval($statecond)) {
5195: return '2';
5196: } else {
5197: return '';
5198: }
5199: }
5200:
5201: if ($thisallowed eq 'A') {
5202: return 'A';
5203: } elsif ($thisallowed eq 'B') {
5204: return 'B';
5205: }
5206: return 'F';
5207: }
5208:
5209: sub split_uri_for_cond {
5210: my $uri=&deversion(&declutter(shift));
5211: my @uriparts=split(/\//,$uri);
5212: my $filename=pop(@uriparts);
5213: my $pathname=join('/',@uriparts);
5214: return ($pathname,$filename);
5215: }
5216: # --------------------------------------------------- Is a resource on the map?
5217:
5218: sub is_on_map {
5219: my ($pathname,$filename) = &split_uri_for_cond(shift);
5220: #Trying to find the conditional for the file
5221: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5222: /\&\Q$filename\E\:([\d\|]+)\&/);
5223: if ($match) {
5224: return (1,$1);
5225: } else {
5226: return (0,0);
5227: }
5228: }
5229:
5230: # --------------------------------------------------------- Get symb from alias
5231:
5232: sub get_symb_from_alias {
5233: my $symb=shift;
5234: my ($map,$resid,$url)=&decode_symb($symb);
5235: # Already is a symb
5236: if ($url) { return $symb; }
5237: # Must be an alias
5238: my $aliassymb='';
5239: my %bighash;
5240: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5241: &GDBM_READER(),0640)) {
5242: my $rid=$bighash{'mapalias_'.$symb};
5243: if ($rid) {
5244: my ($mapid,$resid)=split(/\./,$rid);
5245: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5246: $resid,$bighash{'src_'.$rid});
5247: }
5248: untie %bighash;
5249: }
5250: return $aliassymb;
5251: }
5252:
5253: # ----------------------------------------------------------------- Define Role
5254:
5255: sub definerole {
5256: if (allowed('mcr','/')) {
5257: my ($rolename,$sysrole,$domrole,$courole)=@_;
5258: foreach my $role (split(':',$sysrole)) {
5259: my ($crole,$cqual)=split(/\&/,$role);
5260: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5261: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5262: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5263: return "refused:s:$crole&$cqual";
5264: }
5265: }
5266: }
5267: foreach my $role (split(':',$domrole)) {
5268: my ($crole,$cqual)=split(/\&/,$role);
5269: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5270: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5271: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5272: return "refused:d:$crole&$cqual";
5273: }
5274: }
5275: }
5276: foreach my $role (split(':',$courole)) {
5277: my ($crole,$cqual)=split(/\&/,$role);
5278: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5279: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5280: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5281: return "refused:c:$crole&$cqual";
5282: }
5283: }
5284: }
5285: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5286: "$env{'user.domain'}:$env{'user.name'}:".
5287: "rolesdef_$rolename=".
5288: escape($sysrole.'_'.$domrole.'_'.$courole);
5289: return reply($command,$env{'user.home'});
5290: } else {
5291: return 'refused';
5292: }
5293: }
5294:
5295: # ---------------- Make a metadata query against the network of library servers
5296:
5297: sub metadata_query {
5298: my ($query,$custom,$customshow,$server_array)=@_;
5299: my %rhash;
5300: my %libserv = &all_library();
5301: my @server_list = (defined($server_array) ? @$server_array
5302: : keys(%libserv) );
5303: for my $server (@server_list) {
5304: unless ($custom or $customshow) {
5305: my $reply=&reply("querysend:".&escape($query),$server);
5306: $rhash{$server}=$reply;
5307: }
5308: else {
5309: my $reply=&reply("querysend:".&escape($query).':'.
5310: &escape($custom).':'.&escape($customshow),
5311: $server);
5312: $rhash{$server}=$reply;
5313: }
5314: }
5315: return \%rhash;
5316: }
5317:
5318: # ----------------------------------------- Send log queries and wait for reply
5319:
5320: sub log_query {
5321: my ($uname,$udom,$query,%filters)=@_;
5322: my $uhome=&homeserver($uname,$udom);
5323: if ($uhome eq 'no_host') { return 'error: no_host'; }
5324: my $uhost=&hostname($uhome);
5325: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5326: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5327: $uhome);
5328: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5329: return get_query_reply($queryid);
5330: }
5331:
5332: # -------------------------- Update MySQL table for portfolio file
5333:
5334: sub update_portfolio_table {
5335: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5336: if ($group ne '') {
5337: $file_name =~s /^\Q$group\E//;
5338: }
5339: my $homeserver = &homeserver($uname,$udom);
5340: my $queryid=
5341: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5342: ':'.&escape($file_name).':'.$action,$homeserver);
5343: my $reply = &get_query_reply($queryid);
5344: return $reply;
5345: }
5346:
5347: # -------------------------- Update MySQL allusers table
5348:
5349: sub update_allusers_table {
5350: my ($uname,$udom,$names) = @_;
5351: my $homeserver = &homeserver($uname,$udom);
5352: my $queryid=
5353: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5354: 'lastname='.&escape($names->{'lastname'}).'%%'.
5355: 'firstname='.&escape($names->{'firstname'}).'%%'.
5356: 'middlename='.&escape($names->{'middlename'}).'%%'.
5357: 'generation='.&escape($names->{'generation'}).'%%'.
5358: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5359: 'id='.&escape($names->{'id'}),$homeserver);
5360: my $reply = &get_query_reply($queryid);
5361: return $reply;
5362: }
5363:
5364: # ------- Request retrieval of institutional classlists for course(s)
5365:
5366: sub fetch_enrollment_query {
5367: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5368: my $homeserver;
5369: my $maxtries = 1;
5370: if ($context eq 'automated') {
5371: $homeserver = $perlvar{'lonHostID'};
5372: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5373: } else {
5374: $homeserver = &homeserver($cnum,$dom);
5375: }
5376: my $host=&hostname($homeserver);
5377: my $cmd = '';
5378: foreach my $affiliate (keys(%{$affiliatesref})) {
5379: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5380: }
5381: $cmd =~ s/%%$//;
5382: $cmd = &escape($cmd);
5383: my $query = 'fetchenrollment';
5384: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5385: unless ($queryid=~/^\Q$host\E\_/) {
5386: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5387: return 'error: '.$queryid;
5388: }
5389: my $reply = &get_query_reply($queryid);
5390: my $tries = 1;
5391: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5392: $reply = &get_query_reply($queryid);
5393: $tries ++;
5394: }
5395: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5396: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5397: } else {
5398: my @responses = split(/:/,$reply);
5399: if ($homeserver eq $perlvar{'lonHostID'}) {
5400: foreach my $line (@responses) {
5401: my ($key,$value) = split(/=/,$line,2);
5402: $$replyref{$key} = $value;
5403: }
5404: } else {
5405: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5406: foreach my $line (@responses) {
5407: my ($key,$value) = split(/=/,$line);
5408: $$replyref{$key} = $value;
5409: if ($value > 0) {
5410: foreach my $item (@{$$affiliatesref{$key}}) {
5411: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5412: my $destname = $pathname.'/'.$filename;
5413: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5414: if ($xml_classlist =~ /^error/) {
5415: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5416: } else {
5417: if ( open(FILE,">$destname") ) {
5418: print FILE &unescape($xml_classlist);
5419: close(FILE);
5420: } else {
5421: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5422: }
5423: }
5424: }
5425: }
5426: }
5427: }
5428: return 'ok';
5429: }
5430: return 'error';
5431: }
5432:
5433: sub get_query_reply {
5434: my $queryid=shift;
5435: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5436: my $reply='';
5437: for (1..100) {
5438: sleep 2;
5439: if (-e $replyfile.'.end') {
5440: if (open(my $fh,$replyfile)) {
5441: $reply = join('',<$fh>);
5442: close($fh);
5443: } else { return 'error: reply_file_error'; }
5444: return &unescape($reply);
5445: }
5446: }
5447: return 'timeout:'.$queryid;
5448: }
5449:
5450: sub courselog_query {
5451: #
5452: # possible filters:
5453: # url: url or symb
5454: # username
5455: # domain
5456: # action: view, submit, grade
5457: # start: timestamp
5458: # end: timestamp
5459: #
5460: my (%filters)=@_;
5461: unless ($env{'request.course.id'}) { return 'no_course'; }
5462: if ($filters{'url'}) {
5463: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5464: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5465: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5466: }
5467: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5468: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5469: return &log_query($cname,$cdom,'courselog',%filters);
5470: }
5471:
5472: sub userlog_query {
5473: #
5474: # possible filters:
5475: # action: log check role
5476: # start: timestamp
5477: # end: timestamp
5478: #
5479: my ($uname,$udom,%filters)=@_;
5480: return &log_query($uname,$udom,'userlog',%filters);
5481: }
5482:
5483: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5484:
5485: sub auto_run {
5486: my ($cnum,$cdom) = @_;
5487: my $response = 0;
5488: my $settings;
5489: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5490: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5491: $settings = $domconfig{'autoenroll'};
5492: if ($settings->{'run'} eq '1') {
5493: $response = 1;
5494: }
5495: } else {
5496: my $homeserver;
5497: if (&is_course($cdom,$cnum)) {
5498: $homeserver = &homeserver($cnum,$cdom);
5499: } else {
5500: $homeserver = &domain($cdom,'primary');
5501: }
5502: if ($homeserver ne 'no_host') {
5503: $response = &reply('autorun:'.$cdom,$homeserver);
5504: }
5505: }
5506: return $response;
5507: }
5508:
5509: sub auto_get_sections {
5510: my ($cnum,$cdom,$inst_coursecode) = @_;
5511: my $homeserver;
5512: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5513: $homeserver = &homeserver($cnum,$cdom);
5514: }
5515: if (!defined($homeserver)) {
5516: if ($cdom =~ /^$match_domain$/) {
5517: $homeserver = &domain($cdom,'primary');
5518: }
5519: }
5520: my @secs;
5521: if (defined($homeserver)) {
5522: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5523: unless ($response eq 'refused') {
5524: @secs = split(/:/,$response);
5525: }
5526: }
5527: return @secs;
5528: }
5529:
5530: sub auto_new_course {
5531: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5532: my $homeserver = &homeserver($cnum,$cdom);
5533: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5534: return $response;
5535: }
5536:
5537: sub auto_validate_courseID {
5538: my ($cnum,$cdom,$inst_course_id) = @_;
5539: my $homeserver = &homeserver($cnum,$cdom);
5540: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5541: return $response;
5542: }
5543:
5544: sub auto_validate_instcode {
5545: my ($cnum,$cdom,$instcode,$owner) = @_;
5546: my ($homeserver,$response);
5547: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5548: $homeserver = &homeserver($cnum,$cdom);
5549: }
5550: if (!defined($homeserver)) {
5551: if ($cdom =~ /^$match_domain$/) {
5552: $homeserver = &domain($cdom,'primary');
5553: }
5554: }
5555: my $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
5556: &escape($instcode).':'.&escape($owner),$homeserver));
5557: return $response;
5558: }
5559:
5560: sub auto_create_password {
5561: my ($cnum,$cdom,$authparam,$udom) = @_;
5562: my ($homeserver,$response);
5563: my $create_passwd = 0;
5564: my $authchk = '';
5565: if ($udom =~ /^$match_domain$/) {
5566: $homeserver = &domain($udom,'primary');
5567: }
5568: if ($homeserver eq '') {
5569: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5570: $homeserver = &homeserver($cnum,$cdom);
5571: }
5572: }
5573: if ($homeserver eq '') {
5574: $authchk = 'nodomain';
5575: } else {
5576: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5577: if ($response eq 'refused') {
5578: $authchk = 'refused';
5579: } else {
5580: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5581: }
5582: }
5583: return ($authparam,$create_passwd,$authchk);
5584: }
5585:
5586: sub auto_photo_permission {
5587: my ($cnum,$cdom,$students) = @_;
5588: my $homeserver = &homeserver($cnum,$cdom);
5589: my ($outcome,$perm_reqd,$conditions) =
5590: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5591: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5592: return (undef,undef);
5593: }
5594: return ($outcome,$perm_reqd,$conditions);
5595: }
5596:
5597: sub auto_checkphotos {
5598: my ($uname,$udom,$pid) = @_;
5599: my $homeserver = &homeserver($uname,$udom);
5600: my ($result,$resulttype);
5601: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5602: &escape($uname).':'.&escape($pid),
5603: $homeserver));
5604: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5605: return (undef,undef);
5606: }
5607: if ($outcome) {
5608: ($result,$resulttype) = split(/:/,$outcome);
5609: }
5610: return ($result,$resulttype);
5611: }
5612:
5613: sub auto_photochoice {
5614: my ($cnum,$cdom) = @_;
5615: my $homeserver = &homeserver($cnum,$cdom);
5616: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5617: &escape($cdom),
5618: $homeserver)));
5619: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5620: return (undef,undef);
5621: }
5622: return ($update,$comment);
5623: }
5624:
5625: sub auto_photoupdate {
5626: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5627: my $homeserver = &homeserver($cnum,$dom);
5628: my $host=&hostname($homeserver);
5629: my $cmd = '';
5630: my $maxtries = 1;
5631: foreach my $affiliate (keys(%{$affiliatesref})) {
5632: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5633: }
5634: $cmd =~ s/%%$//;
5635: $cmd = &escape($cmd);
5636: my $query = 'institutionalphotos';
5637: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5638: unless ($queryid=~/^\Q$host\E\_/) {
5639: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5640: return 'error: '.$queryid;
5641: }
5642: my $reply = &get_query_reply($queryid);
5643: my $tries = 1;
5644: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5645: $reply = &get_query_reply($queryid);
5646: $tries ++;
5647: }
5648: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5649: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5650: } else {
5651: my @responses = split(/:/,$reply);
5652: my $outcome = shift(@responses);
5653: foreach my $item (@responses) {
5654: my ($key,$value) = split(/=/,$item);
5655: $$photo{$key} = $value;
5656: }
5657: return $outcome;
5658: }
5659: return 'error';
5660: }
5661:
5662: sub auto_instcode_format {
5663: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5664: $cat_order) = @_;
5665: my $courses = '';
5666: my @homeservers;
5667: if ($caller eq 'global') {
5668: my %servers = &get_servers($codedom,'library');
5669: foreach my $tryserver (keys(%servers)) {
5670: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5671: push(@homeservers,$tryserver);
5672: }
5673: }
5674: } else {
5675: push(@homeservers,&homeserver($caller,$codedom));
5676: }
5677: foreach my $code (keys(%{$instcodes})) {
5678: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5679: }
5680: chop($courses);
5681: my $ok_response = 0;
5682: my $response;
5683: while (@homeservers > 0 && $ok_response == 0) {
5684: my $server = shift(@homeservers);
5685: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5686: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5687: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5688: split(/:/,$response);
5689: %{$codes} = (%{$codes},&str2hash($codes_str));
5690: push(@{$codetitles},&str2array($codetitles_str));
5691: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5692: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5693: $ok_response = 1;
5694: }
5695: }
5696: if ($ok_response) {
5697: return 'ok';
5698: } else {
5699: return $response;
5700: }
5701: }
5702:
5703: sub auto_instcode_defaults {
5704: my ($domain,$returnhash,$code_order) = @_;
5705: my @homeservers;
5706:
5707: my %servers = &get_servers($domain,'library');
5708: foreach my $tryserver (keys(%servers)) {
5709: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5710: push(@homeservers,$tryserver);
5711: }
5712: }
5713:
5714: my $response;
5715: foreach my $server (@homeservers) {
5716: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5717: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5718:
5719: foreach my $pair (split(/\&/,$response)) {
5720: my ($name,$value)=split(/\=/,$pair);
5721: if ($name eq 'code_order') {
5722: @{$code_order} = split(/\&/,&unescape($value));
5723: } else {
5724: $returnhash->{&unescape($name)}=&unescape($value);
5725: }
5726: }
5727: return 'ok';
5728: }
5729:
5730: return $response;
5731: }
5732:
5733: sub auto_possible_instcodes {
5734: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
5735: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
5736: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
5737: return;
5738: }
5739: my (@homeservers,$uhome);
5740: if (defined(&domain($domain,'primary'))) {
5741: $uhome=&domain($domain,'primary');
5742: push(@homeservers,&domain($domain,'primary'));
5743: } else {
5744: my %servers = &get_servers($domain,'library');
5745: foreach my $tryserver (keys(%servers)) {
5746: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5747: push(@homeservers,$tryserver);
5748: }
5749: }
5750: }
5751: my $response;
5752: foreach my $server (@homeservers) {
5753: $response=&reply('autopossibleinstcodes:'.$domain,$server);
5754: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5755: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
5756: split(':',$response);
5757: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
5758: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
5759: foreach my $item (split('&',$cat_title)) {
5760: my ($name,$value)=split('=',$item);
5761: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
5762: }
5763: foreach my $item (split('&',$cat_order)) {
5764: my ($name,$value)=split('=',$item);
5765: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
5766: }
5767: return 'ok';
5768: }
5769: return $response;
5770: }
5771:
5772: sub auto_validate_class_sec {
5773: my ($cdom,$cnum,$owners,$inst_class) = @_;
5774: my $homeserver = &homeserver($cnum,$cdom);
5775: my $ownerlist;
5776: if (ref($owners) eq 'ARRAY') {
5777: $ownerlist = join(',',@{$owners});
5778: } else {
5779: $ownerlist = $owners;
5780: }
5781: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5782: &escape($ownerlist).':'.$cdom,$homeserver);
5783: return $response;
5784: }
5785:
5786: # ------------------------------------------------------- Course Group routines
5787:
5788: sub get_coursegroups {
5789: my ($cdom,$cnum,$group,$namespace) = @_;
5790: return(&dump($namespace,$cdom,$cnum,$group));
5791: }
5792:
5793: sub modify_coursegroup {
5794: my ($cdom,$cnum,$groupsettings) = @_;
5795: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5796: }
5797:
5798: sub toggle_coursegroup_status {
5799: my ($cdom,$cnum,$group,$action) = @_;
5800: my ($from_namespace,$to_namespace);
5801: if ($action eq 'delete') {
5802: $from_namespace = 'coursegroups';
5803: $to_namespace = 'deleted_groups';
5804: } else {
5805: $from_namespace = 'deleted_groups';
5806: $to_namespace = 'coursegroups';
5807: }
5808: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5809: if (my $tmp = &error(%curr_group)) {
5810: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5811: return ('read error',$tmp);
5812: } else {
5813: my %savedsettings = %curr_group;
5814: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5815: my $deloutcome;
5816: if ($result eq 'ok') {
5817: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5818: } else {
5819: return ('write error',$result);
5820: }
5821: if ($deloutcome eq 'ok') {
5822: return 'ok';
5823: } else {
5824: return ('delete error',$deloutcome);
5825: }
5826: }
5827: }
5828:
5829: sub modify_group_roles {
5830: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
5831: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5832: my $role = 'gr/'.&escape($userprivs);
5833: my ($uname,$udom) = split(/:/,$user);
5834: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
5835: if ($result eq 'ok') {
5836: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5837: }
5838: return $result;
5839: }
5840:
5841: sub modify_coursegroup_membership {
5842: my ($cdom,$cnum,$membership) = @_;
5843: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5844: return $result;
5845: }
5846:
5847: sub get_active_groups {
5848: my ($udom,$uname,$cdom,$cnum) = @_;
5849: my $now = time;
5850: my %groups = ();
5851: foreach my $key (keys(%env)) {
5852: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5853: my ($start,$end) = split(/\./,$env{$key});
5854: if (($end!=0) && ($end<$now)) { next; }
5855: if (($start!=0) && ($start>$now)) { next; }
5856: if ($1 eq $cdom && $2 eq $cnum) {
5857: $groups{$3} = $env{$key} ;
5858: }
5859: }
5860: }
5861: return %groups;
5862: }
5863:
5864: sub get_group_membership {
5865: my ($cdom,$cnum,$group) = @_;
5866: return(&dump('groupmembership',$cdom,$cnum,$group));
5867: }
5868:
5869: sub get_users_groups {
5870: my ($udom,$uname,$courseid) = @_;
5871: my @usersgroups;
5872: my $cachetime=1800;
5873:
5874: my $hashid="$udom:$uname:$courseid";
5875: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5876: if (defined($cached)) {
5877: @usersgroups = split(/:/,$grouplist);
5878: } else {
5879: $grouplist = '';
5880: my $courseurl = &courseid_to_courseurl($courseid);
5881: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5882: my $access_end = $env{'course.'.$courseid.
5883: '.default_enrollment_end_date'};
5884: my $now = time;
5885: foreach my $key (keys(%roleshash)) {
5886: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5887: my $group = $1;
5888: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5889: my $start = $2;
5890: my $end = $1;
5891: if ($start == -1) { next; } # deleted from group
5892: if (($start!=0) && ($start>$now)) { next; }
5893: if (($end!=0) && ($end<$now)) {
5894: if ($access_end && $access_end < $now) {
5895: if ($access_end - $end < 86400) {
5896: push(@usersgroups,$group);
5897: }
5898: }
5899: next;
5900: }
5901: push(@usersgroups,$group);
5902: }
5903: }
5904: }
5905: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5906: $grouplist = join(':',@usersgroups);
5907: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5908: }
5909: return @usersgroups;
5910: }
5911:
5912: sub devalidate_getgroups_cache {
5913: my ($udom,$uname,$cdom,$cnum)=@_;
5914: my $courseid = $cdom.'_'.$cnum;
5915:
5916: my $hashid="$udom:$uname:$courseid";
5917: &devalidate_cache_new('getgroups',$hashid);
5918: }
5919:
5920: # ------------------------------------------------------------------ Plain Text
5921:
5922: sub plaintext {
5923: my ($short,$type,$cid,$forcedefault) = @_;
5924: if ($short =~ /^cr/) {
5925: return (split('/',$short))[-1];
5926: }
5927: if (!defined($cid)) {
5928: $cid = $env{'request.course.id'};
5929: }
5930: if (defined($cid) && ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '')) {
5931: unless ($forcedefault) {
5932: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
5933: &Apache::lonlocal::mt_escape(\$roletext);
5934: return &Apache::lonlocal::mt($roletext);
5935: }
5936: }
5937: my %rolenames = (
5938: Course => 'std',
5939: Community => 'alt1',
5940: );
5941: if (defined($type) &&
5942: defined($rolenames{$type}) &&
5943: defined($prp{$short}{$rolenames{$type}})) {
5944: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5945: } else {
5946: return &Apache::lonlocal::mt($prp{$short}{'std'});
5947: }
5948: }
5949:
5950: # ----------------------------------------------------------------- Assign Role
5951:
5952: sub assignrole {
5953: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
5954: $context)=@_;
5955: my $mrole;
5956: if ($role =~ /^cr\//) {
5957: my $cwosec=$url;
5958: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5959: unless (&allowed('ccr',$cwosec)) {
5960: &logthis('Refused custom assignrole: '.
5961: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5962: $env{'user.name'}.' at '.$env{'user.domain'});
5963: return 'refused';
5964: }
5965: $mrole='cr';
5966: } elsif ($role =~ /^gr\//) {
5967: my $cwogrp=$url;
5968: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5969: unless (&allowed('mdg',$cwogrp)) {
5970: &logthis('Refused group assignrole: '.
5971: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5972: $env{'user.name'}.' at '.$env{'user.domain'});
5973: return 'refused';
5974: }
5975: $mrole='gr';
5976: } else {
5977: my $cwosec=$url;
5978: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5979: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5980: my $refused;
5981: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5982: if (!(&allowed('c'.$role,$url))) {
5983: $refused = 1;
5984: }
5985: } else {
5986: $refused = 1;
5987: }
5988: if ($refused) {
5989: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5990: $refused = '';
5991: } else {
5992: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5993: ' '.$role.' '.$end.' '.$start.' by '.
5994: $env{'user.name'}.' at '.$env{'user.domain'});
5995: return 'refused';
5996: }
5997: }
5998: }
5999: $mrole=$role;
6000: }
6001: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6002: "$udom:$uname:$url".'_'."$mrole=$role";
6003: if ($end) { $command.='_'.$end; }
6004: if ($start) {
6005: if ($end) {
6006: $command.='_'.$start;
6007: } else {
6008: $command.='_0_'.$start;
6009: }
6010: }
6011: my $origstart = $start;
6012: my $origend = $end;
6013: my $delflag;
6014: # actually delete
6015: if ($deleteflag) {
6016: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6017: # modify command to delete the role
6018: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6019: "$udom:$uname:$url".'_'."$mrole";
6020: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6021: # set start and finish to negative values for userrolelog
6022: $start=-1;
6023: $end=-1;
6024: $delflag = 1;
6025: }
6026: }
6027: # send command
6028: my $answer=&reply($command,&homeserver($uname,$udom));
6029: # log new user role if status is ok
6030: if ($answer eq 'ok') {
6031: &userrolelog($role,$uname,$udom,$url,$start,$end);
6032: # for course roles, perform group memberships changes triggered by role change.
6033: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6034: unless ($role =~ /^gr/) {
6035: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6036: $origstart,$selfenroll,$context);
6037: }
6038: }
6039: return $answer;
6040: }
6041:
6042: # -------------------------------------------------- Modify user authentication
6043: # Overrides without validation
6044:
6045: sub modifyuserauth {
6046: my ($udom,$uname,$umode,$upass)=@_;
6047: my $uhome=&homeserver($uname,$udom);
6048: unless (&allowed('mau',$udom)) { return 'refused'; }
6049: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6050: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6051: ' in domain '.$env{'request.role.domain'});
6052: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6053: &escape($upass),$uhome);
6054: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6055: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6056: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6057: &log($udom,,$uname,$uhome,
6058: 'Authentication changed by '.$env{'user.domain'}.', '.
6059: $env{'user.name'}.', '.$umode.
6060: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6061: unless ($reply eq 'ok') {
6062: &logthis('Authentication mode error: '.$reply);
6063: return 'error: '.$reply;
6064: }
6065: return 'ok';
6066: }
6067:
6068: # --------------------------------------------------------------- Modify a user
6069:
6070: sub modifyuser {
6071: my ($udom, $uname, $uid,
6072: $umode, $upass, $first,
6073: $middle, $last, $gene,
6074: $forceid, $desiredhome, $email, $inststatus)=@_;
6075: $udom= &LONCAPA::clean_domain($udom);
6076: $uname=&LONCAPA::clean_username($uname);
6077: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6078: $umode.', '.$first.', '.$middle.', '.
6079: $last.', '.$gene.'(forceid: '.$forceid.')'.
6080: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6081: ' desiredhome not specified').
6082: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6083: ' in domain '.$env{'request.role.domain'});
6084: my $uhome=&homeserver($uname,$udom,'true');
6085: # ----------------------------------------------------------------- Create User
6086: if (($uhome eq 'no_host') &&
6087: (($umode && $upass) || ($umode eq 'localauth'))) {
6088: my $unhome='';
6089: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6090: $unhome = $desiredhome;
6091: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6092: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6093: } else { # load balancing routine for determining $unhome
6094: my $loadm=10000000;
6095: my %servers = &get_servers($udom,'library');
6096: foreach my $tryserver (keys(%servers)) {
6097: my $answer=reply('load',$tryserver);
6098: if (($answer=~/\d+/) && ($answer<$loadm)) {
6099: $loadm=$answer;
6100: $unhome=$tryserver;
6101: }
6102: }
6103: }
6104: if (($unhome eq '') || ($unhome eq 'no_host')) {
6105: return 'error: unable to find a home server for '.$uname.
6106: ' in domain '.$udom;
6107: }
6108: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6109: &escape($upass),$unhome);
6110: unless ($reply eq 'ok') {
6111: return 'error: '.$reply;
6112: }
6113: $uhome=&homeserver($uname,$udom,'true');
6114: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6115: return 'error: unable verify users home machine.';
6116: }
6117: } # End of creation of new user
6118: # ---------------------------------------------------------------------- Add ID
6119: if ($uid) {
6120: $uid=~tr/A-Z/a-z/;
6121: my %uidhash=&idrget($udom,$uname);
6122: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6123: && (!$forceid)) {
6124: unless ($uid eq $uidhash{$uname}) {
6125: return 'error: user id "'.$uid.'" does not match '.
6126: 'current user id "'.$uidhash{$uname}.'".';
6127: }
6128: } else {
6129: &idput($udom,($uname => $uid));
6130: }
6131: }
6132: # -------------------------------------------------------------- Add names, etc
6133: my @tmp=&get('environment',
6134: ['firstname','middlename','lastname','generation','id',
6135: 'permanentemail','inststatus'],
6136: $udom,$uname);
6137: my %names;
6138: if ($tmp[0] =~ m/^error:.*/) {
6139: %names=();
6140: } else {
6141: %names = @tmp;
6142: }
6143: #
6144: # Make sure to not trash student environment if instructor does not bother
6145: # to supply name and email information
6146: #
6147: if ($first) { $names{'firstname'} = $first; }
6148: if (defined($middle)) { $names{'middlename'} = $middle; }
6149: if ($last) { $names{'lastname'} = $last; }
6150: if (defined($gene)) { $names{'generation'} = $gene; }
6151: if ($email) {
6152: $email=~s/[^\w\@\.\-\,]//gs;
6153: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6154: }
6155: if ($uid) { $names{'id'} = $uid; }
6156: if (defined($inststatus)) {
6157: $names{'inststatus'} = '';
6158: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6159: if (ref($usertypes) eq 'HASH') {
6160: my @okstatuses;
6161: foreach my $item (split(/:/,$inststatus)) {
6162: if (defined($usertypes->{$item})) {
6163: push(@okstatuses,$item);
6164: }
6165: }
6166: if (@okstatuses) {
6167: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6168: }
6169: }
6170: }
6171: my $reply = &put('environment', \%names, $udom,$uname);
6172: if ($reply ne 'ok') { return 'error: '.$reply; }
6173: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
6174: &devalidate_cache_new('namescache',$uname.':'.$udom);
6175: my $logmsg = 'Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
6176: $umode.', '.$first.', '.$middle.', '.
6177: $last.', '.$gene.', '.$email.', '.$inststatus;
6178: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6179: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6180: } else {
6181: $logmsg .= ' during self creation';
6182: }
6183: &logthis($logmsg);
6184: return 'ok';
6185: }
6186:
6187: # -------------------------------------------------------------- Modify student
6188:
6189: sub modifystudent {
6190: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
6191: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
6192: $selfenroll,$context,$inststatus)=@_;
6193: if (!$cid) {
6194: unless ($cid=$env{'request.course.id'}) {
6195: return 'not_in_class';
6196: }
6197: }
6198: # --------------------------------------------------------------- Make the user
6199: my $reply=&modifyuser
6200: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
6201: $desiredhome,$email,$inststatus);
6202: unless ($reply eq 'ok') { return $reply; }
6203: # This will cause &modify_student_enrollment to get the uid from the
6204: # students environment
6205: $uid = undef if (!$forceid);
6206: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
6207: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
6208: return $reply;
6209: }
6210:
6211: sub modify_student_enrollment {
6212: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
6213: my ($cdom,$cnum,$chome);
6214: if (!$cid) {
6215: unless ($cid=$env{'request.course.id'}) {
6216: return 'not_in_class';
6217: }
6218: $cdom=$env{'course.'.$cid.'.domain'};
6219: $cnum=$env{'course.'.$cid.'.num'};
6220: } else {
6221: ($cdom,$cnum)=split(/_/,$cid);
6222: }
6223: $chome=$env{'course.'.$cid.'.home'};
6224: if (!$chome) {
6225: $chome=&homeserver($cnum,$cdom);
6226: }
6227: if (!$chome) { return 'unknown_course'; }
6228: # Make sure the user exists
6229: my $uhome=&homeserver($uname,$udom);
6230: if (($uhome eq '') || ($uhome eq 'no_host')) {
6231: return 'error: no such user';
6232: }
6233: # Get student data if we were not given enough information
6234: if (!defined($first) || $first eq '' ||
6235: !defined($last) || $last eq '' ||
6236: !defined($uid) || $uid eq '' ||
6237: !defined($middle) || $middle eq '' ||
6238: !defined($gene) || $gene eq '') {
6239: # They did not supply us with enough data to enroll the student, so
6240: # we need to pick up more information.
6241: my %tmp = &get('environment',
6242: ['firstname','middlename','lastname', 'generation','id']
6243: ,$udom,$uname);
6244:
6245: #foreach my $key (keys(%tmp)) {
6246: # &logthis("key $key = ".$tmp{$key});
6247: #}
6248: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
6249: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
6250: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
6251: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
6252: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
6253: }
6254: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
6255: my $reply=cput('classlist',
6256: {"$uname:$udom" =>
6257: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
6258: $cdom,$cnum);
6259: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
6260: return 'error: '.$reply;
6261: } else {
6262: &devalidate_getsection_cache($udom,$uname,$cid);
6263: }
6264: # Add student role to user
6265: my $uurl='/'.$cid;
6266: $uurl=~s/\_/\//g;
6267: if ($usec) {
6268: $uurl.='/'.$usec;
6269: }
6270: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
6271: }
6272:
6273: sub format_name {
6274: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
6275: my $name;
6276: if ($first ne 'lastname') {
6277: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
6278: } else {
6279: if ($lastname=~/\S/) {
6280: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
6281: $name=~s/\s+,/,/;
6282: } else {
6283: $name.= $firstname.' '.$middlename.' '.$generation;
6284: }
6285: }
6286: $name=~s/^\s+//;
6287: $name=~s/\s+$//;
6288: $name=~s/\s+/ /g;
6289: return $name;
6290: }
6291:
6292: # ------------------------------------------------- Write to course preferences
6293:
6294: sub writecoursepref {
6295: my ($courseid,%prefs)=@_;
6296: $courseid=~s/^\///;
6297: $courseid=~s/\_/\//g;
6298: my ($cdomain,$cnum)=split(/\//,$courseid);
6299: my $chome=homeserver($cnum,$cdomain);
6300: if (($chome eq '') || ($chome eq 'no_host')) {
6301: return 'error: no such course';
6302: }
6303: my $cstring='';
6304: foreach my $pref (keys(%prefs)) {
6305: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
6306: }
6307: $cstring=~s/\&$//;
6308: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
6309: }
6310:
6311: # ---------------------------------------------------------- Make/modify course
6312:
6313: sub createcourse {
6314: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
6315: $course_owner,$crstype)=@_;
6316: $url=&declutter($url);
6317: my $cid='';
6318: unless (&allowed('ccc',$udom)) {
6319: return 'refused';
6320: }
6321: # ------------------------------------------------------------------- Create ID
6322: my $uname=int(1+rand(9)).
6323: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
6324: substr($$.time,0,5).unpack("H8",pack("I32",time)).
6325: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
6326: # ----------------------------------------------- Make sure that does not exist
6327: my $uhome=&homeserver($uname,$udom,'true');
6328: unless (($uhome eq '') || ($uhome eq 'no_host')) {
6329: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
6330: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
6331: $uhome=&homeserver($uname,$udom,'true');
6332: unless (($uhome eq '') || ($uhome eq 'no_host')) {
6333: return 'error: unable to generate unique course-ID';
6334: }
6335: }
6336: # ------------------------------------------------ Check supplied server name
6337: $course_server = $env{'user.homeserver'} if (! defined($course_server));
6338: if (! &is_library($course_server)) {
6339: return 'error:bad server name '.$course_server;
6340: }
6341: # ------------------------------------------------------------- Make the course
6342: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
6343: $course_server);
6344: unless ($reply eq 'ok') { return 'error: '.$reply; }
6345: $uhome=&homeserver($uname,$udom,'true');
6346: if (($uhome eq '') || ($uhome eq 'no_host')) {
6347: return 'error: no such course';
6348: }
6349: # ----------------------------------------------------------------- Course made
6350: # log existence
6351: my $newcourse = {
6352: $udom.'_'.$uname => {
6353: description => $description,
6354: inst_code => $inst_code,
6355: owner => $course_owner,
6356: type => $crstype,
6357: },
6358: };
6359: &courseidput($udom,$newcourse,$uhome,'notime');
6360: # set toplevel url
6361: my $topurl=$url;
6362: unless ($nonstandard) {
6363: # ------------------------------------------ For standard courses, make top url
6364: my $mapurl=&clutter($url);
6365: if ($mapurl eq '/res/') { $mapurl=''; }
6366: $env{'form.initmap'}=(<<ENDINITMAP);
6367: <map>
6368: <resource id="1" type="start"></resource>
6369: <resource id="2" src="$mapurl"></resource>
6370: <resource id="3" type="finish"></resource>
6371: <link index="1" from="1" to="2"></link>
6372: <link index="2" from="2" to="3"></link>
6373: </map>
6374: ENDINITMAP
6375: $topurl=&declutter(
6376: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
6377: );
6378: }
6379: # ----------------------------------------------------------- Write preferences
6380: &writecoursepref($udom.'_'.$uname,
6381: ('description' => $description,
6382: 'url' => $topurl));
6383: return '/'.$udom.'/'.$uname;
6384: }
6385:
6386: sub is_course {
6387: my ($cdom,$cnum) = @_;
6388: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
6389: undef,'.');
6390: if (exists($courses{$cdom.'_'.$cnum})) {
6391: return 1;
6392: }
6393: return 0;
6394: }
6395:
6396: # ---------------------------------------------------------- Assign Custom Role
6397:
6398: sub assigncustomrole {
6399: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
6400: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
6401: $end,$start,$deleteflag,$selfenroll,$context);
6402: }
6403:
6404: # ----------------------------------------------------------------- Revoke Role
6405:
6406: sub revokerole {
6407: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
6408: my $now=time;
6409: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
6410: }
6411:
6412: # ---------------------------------------------------------- Revoke Custom Role
6413:
6414: sub revokecustomrole {
6415: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
6416: my $now=time;
6417: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
6418: $deleteflag,$selfenroll,$context);
6419: }
6420:
6421: # ------------------------------------------------------------ Disk usage
6422: sub diskusage {
6423: my ($udom,$uname,$directorypath,$getpropath)=@_;
6424: $directorypath =~ s/\/$//;
6425: my $listing=&reply('du2:'.&escape($directorypath).':'
6426: .&escape($getpropath).':'.&escape($uname).':'
6427: .&escape($udom),homeserver($uname,$udom));
6428: if ($listing eq 'unknown_cmd') {
6429: if ($getpropath) {
6430: $directorypath = &propath($udom,$uname).'/'.$directorypath;
6431: }
6432: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
6433: }
6434: return $listing;
6435: }
6436:
6437: sub is_locked {
6438: my ($file_name, $domain, $user) = @_;
6439: my @check;
6440: my $is_locked;
6441: push @check, $file_name;
6442: my %locked = &get('file_permissions',\@check,
6443: $env{'user.domain'},$env{'user.name'});
6444: my ($tmp)=keys(%locked);
6445: if ($tmp=~/^error:/) { undef(%locked); }
6446:
6447: if (ref($locked{$file_name}) eq 'ARRAY') {
6448: $is_locked = 'false';
6449: foreach my $entry (@{$locked{$file_name}}) {
6450: if (ref($entry) eq 'ARRAY') {
6451: $is_locked = 'true';
6452: last;
6453: }
6454: }
6455: } else {
6456: $is_locked = 'false';
6457: }
6458: }
6459:
6460: sub declutter_portfile {
6461: my ($file) = @_;
6462: $file =~ s{^(/portfolio/|portfolio/)}{/};
6463: return $file;
6464: }
6465:
6466: # ------------------------------------------------------------- Mark as Read Only
6467:
6468: sub mark_as_readonly {
6469: my ($domain,$user,$files,$what) = @_;
6470: my %current_permissions = &dump('file_permissions',$domain,$user);
6471: my ($tmp)=keys(%current_permissions);
6472: if ($tmp=~/^error:/) { undef(%current_permissions); }
6473: foreach my $file (@{$files}) {
6474: $file = &declutter_portfile($file);
6475: push(@{$current_permissions{$file}},$what);
6476: }
6477: &put('file_permissions',\%current_permissions,$domain,$user);
6478: return;
6479: }
6480:
6481: # ------------------------------------------------------------Save Selected Files
6482:
6483: sub save_selected_files {
6484: my ($user, $path, @files) = @_;
6485: my $filename = $user."savedfiles";
6486: my @other_files = &files_not_in_path($user, $path);
6487: open (OUT, '>'.$tmpdir.$filename);
6488: foreach my $file (@files) {
6489: print (OUT $env{'form.currentpath'}.$file."\n");
6490: }
6491: foreach my $file (@other_files) {
6492: print (OUT $file."\n");
6493: }
6494: close (OUT);
6495: return 'ok';
6496: }
6497:
6498: sub clear_selected_files {
6499: my ($user) = @_;
6500: my $filename = $user."savedfiles";
6501: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6502: print (OUT undef);
6503: close (OUT);
6504: return ("ok");
6505: }
6506:
6507: sub files_in_path {
6508: my ($user, $path) = @_;
6509: my $filename = $user."savedfiles";
6510: my %return_files;
6511: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6512: while (my $line_in = <IN>) {
6513: chomp ($line_in);
6514: my @paths_and_file = split (m!/!, $line_in);
6515: my $file_part = pop (@paths_and_file);
6516: my $path_part = join ('/', @paths_and_file);
6517: $path_part.='/';
6518: my $path_and_file = $path_part.$file_part;
6519: if ($path_part eq $path) {
6520: $return_files{$file_part}= 'selected';
6521: }
6522: }
6523: close (IN);
6524: return (\%return_files);
6525: }
6526:
6527: # called in portfolio select mode, to show files selected NOT in current directory
6528: sub files_not_in_path {
6529: my ($user, $path) = @_;
6530: my $filename = $user."savedfiles";
6531: my @return_files;
6532: my $path_part;
6533: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6534: while (my $line = <IN>) {
6535: #ok, I know it's clunky, but I want it to work
6536: my @paths_and_file = split(m|/|, $line);
6537: my $file_part = pop(@paths_and_file);
6538: chomp($file_part);
6539: my $path_part = join('/', @paths_and_file);
6540: $path_part .= '/';
6541: my $path_and_file = $path_part.$file_part;
6542: if ($path_part ne $path) {
6543: push(@return_files, ($path_and_file));
6544: }
6545: }
6546: close(OUT);
6547: return (@return_files);
6548: }
6549:
6550: #----------------------------------------------Get portfolio file permissions
6551:
6552: sub get_portfile_permissions {
6553: my ($domain,$user) = @_;
6554: my %current_permissions = &dump('file_permissions',$domain,$user);
6555: my ($tmp)=keys(%current_permissions);
6556: if ($tmp=~/^error:/) { undef(%current_permissions); }
6557: return \%current_permissions;
6558: }
6559:
6560: #---------------------------------------------Get portfolio file access controls
6561:
6562: sub get_access_controls {
6563: my ($current_permissions,$group,$file) = @_;
6564: my %access;
6565: my $real_file = $file;
6566: $file =~ s/\.meta$//;
6567: if (defined($file)) {
6568: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
6569: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
6570: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
6571: }
6572: }
6573: } else {
6574: foreach my $key (keys(%{$current_permissions})) {
6575: if ($key =~ /\0accesscontrol$/) {
6576: if (defined($group)) {
6577: if ($key !~ m-^\Q$group\E/-) {
6578: next;
6579: }
6580: }
6581: my ($fullpath) = split(/\0/,$key);
6582: if (ref($$current_permissions{$key}) eq 'HASH') {
6583: foreach my $control (keys(%{$$current_permissions{$key}})) {
6584: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
6585: }
6586: }
6587: }
6588: }
6589: }
6590: return %access;
6591: }
6592:
6593: sub modify_access_controls {
6594: my ($file_name,$changes,$domain,$user)=@_;
6595: my ($outcome,$deloutcome);
6596: my %store_permissions;
6597: my %new_values;
6598: my %new_control;
6599: my %translation;
6600: my @deletions = ();
6601: my $now = time;
6602: if (exists($$changes{'activate'})) {
6603: if (ref($$changes{'activate'}) eq 'HASH') {
6604: my @newitems = sort(keys(%{$$changes{'activate'}}));
6605: my $numnew = scalar(@newitems);
6606: for (my $i=0; $i<$numnew; $i++) {
6607: my $newkey = $newitems[$i];
6608: my $newid = &Apache::loncommon::get_cgi_id();
6609: if ($newkey =~ /^\d+:/) {
6610: $newkey =~ s/^(\d+)/$newid/;
6611: $translation{$1} = $newid;
6612: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
6613: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
6614: $translation{$1} = $newid;
6615: }
6616: $new_values{$file_name."\0".$newkey} =
6617: $$changes{'activate'}{$newitems[$i]};
6618: $new_control{$newkey} = $now;
6619: }
6620: }
6621: }
6622: my %todelete;
6623: my %changed_items;
6624: foreach my $action ('delete','update') {
6625: if (exists($$changes{$action})) {
6626: if (ref($$changes{$action}) eq 'HASH') {
6627: foreach my $key (keys(%{$$changes{$action}})) {
6628: my ($itemnum) = ($key =~ /^([^:]+):/);
6629: if ($action eq 'delete') {
6630: $todelete{$itemnum} = 1;
6631: } else {
6632: $changed_items{$itemnum} = $key;
6633: }
6634: }
6635: }
6636: }
6637: }
6638: # get lock on access controls for file.
6639: my $lockhash = {
6640: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6641: ':'.$env{'user.domain'},
6642: };
6643: my $tries = 0;
6644: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6645:
6646: while (($gotlock ne 'ok') && $tries <3) {
6647: $tries ++;
6648: sleep 1;
6649: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6650: }
6651: if ($gotlock eq 'ok') {
6652: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6653: my ($tmp)=keys(%curr_permissions);
6654: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6655: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6656: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6657: if (ref($curr_controls) eq 'HASH') {
6658: foreach my $control_item (keys(%{$curr_controls})) {
6659: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6660: if (defined($todelete{$itemnum})) {
6661: push(@deletions,$file_name."\0".$control_item);
6662: } else {
6663: if (defined($changed_items{$itemnum})) {
6664: $new_control{$changed_items{$itemnum}} = $now;
6665: push(@deletions,$file_name."\0".$control_item);
6666: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6667: } else {
6668: $new_control{$control_item} = $$curr_controls{$control_item};
6669: }
6670: }
6671: }
6672: }
6673: }
6674: my ($group);
6675: if (&is_course($domain,$user)) {
6676: ($group,my $file) = split(/\//,$file_name,2);
6677: }
6678: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6679: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6680: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6681: # remove lock
6682: my @del_lock = ($file_name."\0".'locked_access_records');
6683: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6684: my $sqlresult =
6685: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
6686: $group);
6687: } else {
6688: $outcome = "error: could not obtain lockfile\n";
6689: }
6690: return ($outcome,$deloutcome,\%new_values,\%translation);
6691: }
6692:
6693: sub make_public_indefinitely {
6694: my ($requrl) = @_;
6695: my $now = time;
6696: my $action = 'activate';
6697: my $aclnum = 0;
6698: if (&is_portfolio_url($requrl)) {
6699: my (undef,$udom,$unum,$file_name,$group) =
6700: &parse_portfolio_url($requrl);
6701: my $current_perms = &get_portfile_permissions($udom,$unum);
6702: my %access_controls = &get_access_controls($current_perms,
6703: $group,$file_name);
6704: foreach my $key (keys(%{$access_controls{$file_name}})) {
6705: my ($num,$scope,$end,$start) =
6706: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6707: if ($scope eq 'public') {
6708: if ($start <= $now && $end == 0) {
6709: $action = 'none';
6710: } else {
6711: $action = 'update';
6712: $aclnum = $num;
6713: }
6714: last;
6715: }
6716: }
6717: if ($action eq 'none') {
6718: return 'ok';
6719: } else {
6720: my %changes;
6721: my $newend = 0;
6722: my $newstart = $now;
6723: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6724: $changes{$action}{$newkey} = {
6725: type => 'public',
6726: time => {
6727: start => $newstart,
6728: end => $newend,
6729: },
6730: };
6731: my ($outcome,$deloutcome,$new_values,$translation) =
6732: &modify_access_controls($file_name,\%changes,$udom,$unum);
6733: return $outcome;
6734: }
6735: } else {
6736: return 'invalid';
6737: }
6738: }
6739:
6740: #------------------------------------------------------Get Marked as Read Only
6741:
6742: sub get_marked_as_readonly {
6743: my ($domain,$user,$what,$group) = @_;
6744: my $current_permissions = &get_portfile_permissions($domain,$user);
6745: my @readonly_files;
6746: my $cmp1=$what;
6747: if (ref($what)) { $cmp1=join('',@{$what}) };
6748: while (my ($file_name,$value) = each(%{$current_permissions})) {
6749: if (defined($group)) {
6750: if ($file_name !~ m-^\Q$group\E/-) {
6751: next;
6752: }
6753: }
6754: if (ref($value) eq "ARRAY"){
6755: foreach my $stored_what (@{$value}) {
6756: my $cmp2=$stored_what;
6757: if (ref($stored_what) eq 'ARRAY') {
6758: $cmp2=join('',@{$stored_what});
6759: }
6760: if ($cmp1 eq $cmp2) {
6761: push(@readonly_files, $file_name);
6762: last;
6763: } elsif (!defined($what)) {
6764: push(@readonly_files, $file_name);
6765: last;
6766: }
6767: }
6768: }
6769: }
6770: return @readonly_files;
6771: }
6772: #-----------------------------------------------------------Get Marked as Read Only Hash
6773:
6774: sub get_marked_as_readonly_hash {
6775: my ($current_permissions,$group,$what) = @_;
6776: my %readonly_files;
6777: while (my ($file_name,$value) = each(%{$current_permissions})) {
6778: if (defined($group)) {
6779: if ($file_name !~ m-^\Q$group\E/-) {
6780: next;
6781: }
6782: }
6783: if (ref($value) eq "ARRAY"){
6784: foreach my $stored_what (@{$value}) {
6785: if (ref($stored_what) eq 'ARRAY') {
6786: foreach my $lock_descriptor(@{$stored_what}) {
6787: if ($lock_descriptor eq 'graded') {
6788: $readonly_files{$file_name} = 'graded';
6789: } elsif ($lock_descriptor eq 'handback') {
6790: $readonly_files{$file_name} = 'handback';
6791: } else {
6792: if (!exists($readonly_files{$file_name})) {
6793: $readonly_files{$file_name} = 'locked';
6794: }
6795: }
6796: }
6797: }
6798: }
6799: }
6800: }
6801: return %readonly_files;
6802: }
6803: # ------------------------------------------------------------ Unmark as Read Only
6804:
6805: sub unmark_as_readonly {
6806: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6807: # for portfolio submissions, $what contains [$symb,$crsid]
6808: my ($domain,$user,$what,$file_name,$group) = @_;
6809: $file_name = &declutter_portfile($file_name);
6810: my $symb_crs = $what;
6811: if (ref($what)) { $symb_crs=join('',@$what); }
6812: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6813: my ($tmp)=keys(%current_permissions);
6814: if ($tmp=~/^error:/) { undef(%current_permissions); }
6815: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6816: foreach my $file (@readonly_files) {
6817: my $clean_file = &declutter_portfile($file);
6818: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6819: my $current_locks = $current_permissions{$file};
6820: my @new_locks;
6821: my @del_keys;
6822: if (ref($current_locks) eq "ARRAY"){
6823: foreach my $locker (@{$current_locks}) {
6824: my $compare=$locker;
6825: if (ref($locker) eq 'ARRAY') {
6826: $compare=join('',@{$locker});
6827: if ($compare ne $symb_crs) {
6828: push(@new_locks, $locker);
6829: }
6830: }
6831: }
6832: if (scalar(@new_locks) > 0) {
6833: $current_permissions{$file} = \@new_locks;
6834: } else {
6835: push(@del_keys, $file);
6836: &del('file_permissions',\@del_keys, $domain, $user);
6837: delete($current_permissions{$file});
6838: }
6839: }
6840: }
6841: &put('file_permissions',\%current_permissions,$domain,$user);
6842: return;
6843: }
6844:
6845: # ------------------------------------------------------------ Directory lister
6846:
6847: sub dirlist {
6848: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
6849: $uri=~s/^\///;
6850: $uri=~s/\/$//;
6851: my ($udom, $uname);
6852: if ($getuserdir) {
6853: $udom = $userdomain;
6854: $uname = $username;
6855: } else {
6856: (undef,$udom,$uname)=split(/\//,$uri);
6857: if(defined($userdomain)) {
6858: $udom = $userdomain;
6859: }
6860: if(defined($username)) {
6861: $uname = $username;
6862: }
6863: }
6864: my ($dirRoot,$listing,@listing_results);
6865:
6866: $dirRoot = $perlvar{'lonDocRoot'};
6867: if (defined($getpropath)) {
6868: $dirRoot = &propath($udom,$uname);
6869: $dirRoot =~ s/\/$//;
6870: } elsif (defined($getuserdir)) {
6871: my $subdir=$uname.'__';
6872: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6873: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
6874: ."/$udom/$subdir/$uname";
6875: } elsif (defined($alternateRoot)) {
6876: $dirRoot = $alternateRoot;
6877: }
6878:
6879: if($udom) {
6880: if($uname) {
6881: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
6882: .$getuserdir.':'.&escape($dirRoot)
6883: .':'.&escape($uname).':'.&escape($udom),
6884: &homeserver($uname,$udom));
6885: if ($listing eq 'unknown_cmd') {
6886: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6887: &homeserver($uname,$udom));
6888: } else {
6889: @listing_results = map { &unescape($_); } split(/:/,$listing);
6890: }
6891: if ($listing eq 'unknown_cmd') {
6892: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6893: &homeserver($uname,$udom));
6894: @listing_results = split(/:/,$listing);
6895: } else {
6896: @listing_results = map { &unescape($_); } split(/:/,$listing);
6897: }
6898: return @listing_results;
6899: } elsif(!$alternateRoot) {
6900: my %allusers;
6901: my %servers = &get_servers($udom,'library');
6902: foreach my $tryserver (keys(%servers)) {
6903: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
6904: &escape($udom),$tryserver);
6905: if ($listing eq 'unknown_cmd') {
6906: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6907: $udom, $tryserver);
6908: } else {
6909: @listing_results = map { &unescape($_); } split(/:/,$listing);
6910: }
6911: if ($listing eq 'unknown_cmd') {
6912: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6913: $udom, $tryserver);
6914: @listing_results = split(/:/,$listing);
6915: } else {
6916: @listing_results =
6917: map { &unescape($_); } split(/:/,$listing);
6918: }
6919: if ($listing_results[0] ne 'no_such_dir' &&
6920: $listing_results[0] ne 'empty' &&
6921: $listing_results[0] ne 'con_lost') {
6922: foreach my $line (@listing_results) {
6923: my ($entry) = split(/&/,$line,2);
6924: $allusers{$entry} = 1;
6925: }
6926: }
6927: }
6928: my $alluserstr='';
6929: foreach my $user (sort(keys(%allusers))) {
6930: $alluserstr.=$user.'&user:';
6931: }
6932: $alluserstr=~s/:$//;
6933: return split(/:/,$alluserstr);
6934: } else {
6935: return ('missing user name');
6936: }
6937: } elsif(!defined($getpropath)) {
6938: my @all_domains = sort(&all_domains());
6939: foreach my $domain (@all_domains) {
6940: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6941: }
6942: return @all_domains;
6943: } else {
6944: return ('missing domain');
6945: }
6946: }
6947:
6948: # --------------------------------------------- GetFileTimestamp
6949: # This function utilizes dirlist and returns the date stamp for
6950: # when it was last modified. It will also return an error of -1
6951: # if an error occurs
6952:
6953: sub GetFileTimestamp {
6954: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
6955: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6956: $studentName = &LONCAPA::clean_username($studentName);
6957: my ($fileStat) =
6958: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
6959: undef,$getuserdir);
6960: my @stats = split('&', $fileStat);
6961: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6962: # @stats contains first the filename, then the stat output
6963: return $stats[10]; # so this is 10 instead of 9.
6964: } else {
6965: return -1;
6966: }
6967: }
6968:
6969: sub stat_file {
6970: my ($uri) = @_;
6971: $uri = &clutter_with_no_wrapper($uri);
6972:
6973: my ($udom,$uname,$file);
6974: if ($uri =~ m-^/(uploaded|editupload)/-) {
6975: ($udom,$uname,$file) =
6976: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6977: $file = 'userfiles/'.$file;
6978: }
6979: if ($uri =~ m-^/res/-) {
6980: ($udom,$uname) =
6981: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6982: $file = $uri;
6983: }
6984:
6985: if (!$udom || !$uname || !$file) {
6986: # unable to handle the uri
6987: return ();
6988: }
6989: my $getpropath;
6990: if ($file =~ /^userfiles\//) {
6991: $getpropath = 1;
6992: }
6993: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
6994: my @stats = split('&', $result);
6995:
6996: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6997: shift(@stats); #filename is first
6998: return @stats;
6999: }
7000: return ();
7001: }
7002:
7003: # -------------------------------------------------------- Value of a Condition
7004:
7005: # gets the value of a specific preevaluated condition
7006: # stored in the string $env{user.state.<cid>}
7007: # or looks up a condition reference in the bighash and if if hasn't
7008: # already been evaluated recurses into docondval to get the value of
7009: # the condition, then memoizing it to
7010: # $env{user.state.<cid>.<condition>}
7011: sub directcondval {
7012: my $number=shift;
7013: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7014: &Apache::lonuserstate::evalstate();
7015: }
7016: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7017: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7018: } elsif ($number =~ /^_/) {
7019: my $sub_condition;
7020: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7021: &GDBM_READER(),0640)) {
7022: $sub_condition=$bighash{'conditions'.$number};
7023: untie(%bighash);
7024: }
7025: my $value = &docondval($sub_condition);
7026: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7027: return $value;
7028: }
7029: if ($env{'user.state.'.$env{'request.course.id'}}) {
7030: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
7031: } else {
7032: return 2;
7033: }
7034: }
7035:
7036: # get the collection of conditions for this resource
7037: sub condval {
7038: my $condidx=shift;
7039: my $allpathcond='';
7040: foreach my $cond (split(/\|/,$condidx)) {
7041: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
7042: $allpathcond.=
7043: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
7044: }
7045: }
7046: $allpathcond=~s/\|$//;
7047: return &docondval($allpathcond);
7048: }
7049:
7050: #evaluates an expression of conditions
7051: sub docondval {
7052: my ($allpathcond) = @_;
7053: my $result=0;
7054: if ($env{'request.course.id'}
7055: && defined($allpathcond)) {
7056: my $operand='|';
7057: my @stack;
7058: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
7059: if ($chunk eq '(') {
7060: push @stack,($operand,$result);
7061: } elsif ($chunk eq ')') {
7062: my $before=pop @stack;
7063: if (pop @stack eq '&') {
7064: $result=$result>$before?$before:$result;
7065: } else {
7066: $result=$result>$before?$result:$before;
7067: }
7068: } elsif (($chunk eq '&') || ($chunk eq '|')) {
7069: $operand=$chunk;
7070: } else {
7071: my $new=directcondval($chunk);
7072: if ($operand eq '&') {
7073: $result=$result>$new?$new:$result;
7074: } else {
7075: $result=$result>$new?$result:$new;
7076: }
7077: }
7078: }
7079: }
7080: return $result;
7081: }
7082:
7083: # ---------------------------------------------------- Devalidate courseresdata
7084:
7085: sub devalidatecourseresdata {
7086: my ($coursenum,$coursedomain)=@_;
7087: my $hashid=$coursenum.':'.$coursedomain;
7088: &devalidate_cache_new('courseres',$hashid);
7089: }
7090:
7091:
7092: # --------------------------------------------------- Course Resourcedata Query
7093: #
7094: # Parameters:
7095: # $coursenum - Number of the course.
7096: # $coursedomain - Domain at which the course was created.
7097: # Returns:
7098: # A hash of the course parameters along (I think) with timestamps
7099: # and version info.
7100:
7101: sub get_courseresdata {
7102: my ($coursenum,$coursedomain)=@_;
7103: my $coursehom=&homeserver($coursenum,$coursedomain);
7104: my $hashid=$coursenum.':'.$coursedomain;
7105: my ($result,$cached)=&is_cached_new('courseres',$hashid);
7106: my %dumpreply;
7107: unless (defined($cached)) {
7108: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
7109: $result=\%dumpreply;
7110: my ($tmp) = keys(%dumpreply);
7111: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
7112: &do_cache_new('courseres',$hashid,$result,600);
7113: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
7114: return $tmp;
7115: } elsif ($tmp =~ /^(error)/) {
7116: $result=undef;
7117: &do_cache_new('courseres',$hashid,$result,600);
7118: }
7119: }
7120: return $result;
7121: }
7122:
7123: sub devalidateuserresdata {
7124: my ($uname,$udom)=@_;
7125: my $hashid="$udom:$uname";
7126: &devalidate_cache_new('userres',$hashid);
7127: }
7128:
7129: sub get_userresdata {
7130: my ($uname,$udom)=@_;
7131: #most student don\'t have any data set, check if there is some data
7132: if (&EXT_cache_status($udom,$uname)) { return undef; }
7133:
7134: my $hashid="$udom:$uname";
7135: my ($result,$cached)=&is_cached_new('userres',$hashid);
7136: if (!defined($cached)) {
7137: my %resourcedata=&dump('resourcedata',$udom,$uname);
7138: $result=\%resourcedata;
7139: &do_cache_new('userres',$hashid,$result,600);
7140: }
7141: my ($tmp)=keys(%$result);
7142: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
7143: return $result;
7144: }
7145: #error 2 occurs when the .db doesn't exist
7146: if ($tmp!~/error: 2 /) {
7147: &logthis("<font color=\"blue\">WARNING:".
7148: " Trying to get resource data for ".
7149: $uname." at ".$udom.": ".
7150: $tmp."</font>");
7151: } elsif ($tmp=~/error: 2 /) {
7152: #&EXT_cache_set($udom,$uname);
7153: &do_cache_new('userres',$hashid,undef,600);
7154: undef($tmp); # not really an error so don't send it back
7155: }
7156: return $tmp;
7157: }
7158: #----------------------------------------------- resdata - return resource data
7159: # Purpose:
7160: # Return resource data for either users or for a course.
7161: # Parameters:
7162: # $name - Course/user name.
7163: # $domain - Name of the domain the user/course is registered on.
7164: # $type - Type of thing $name is (must be 'course' or 'user'
7165: # @which - Array of names of resources desired.
7166: # Returns:
7167: # The value of the first reasource in @which that is found in the
7168: # resource hash.
7169: # Exceptional Conditions:
7170: # If the $type passed in is not valid (not the string 'course' or
7171: # 'user', an undefined reference is returned.
7172: # If none of the resources are found, an undef is returned
7173: sub resdata {
7174: my ($name,$domain,$type,@which)=@_;
7175: my $result;
7176: if ($type eq 'course') {
7177: $result=&get_courseresdata($name,$domain);
7178: } elsif ($type eq 'user') {
7179: $result=&get_userresdata($name,$domain);
7180: }
7181: if (!ref($result)) { return $result; }
7182: foreach my $item (@which) {
7183: if (defined($result->{$item->[0]})) {
7184: return [$result->{$item->[0]},$item->[1]];
7185: }
7186: }
7187: return undef;
7188: }
7189:
7190: #
7191: # EXT resource caching routines
7192: #
7193:
7194: sub clear_EXT_cache_status {
7195: &delenv('cache.EXT.');
7196: }
7197:
7198: sub EXT_cache_status {
7199: my ($target_domain,$target_user) = @_;
7200: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7201: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
7202: # We know already the user has no data
7203: return 1;
7204: } else {
7205: return 0;
7206: }
7207: }
7208:
7209: sub EXT_cache_set {
7210: my ($target_domain,$target_user) = @_;
7211: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7212: #&appenv({$cachename => time});
7213: }
7214:
7215: # --------------------------------------------------------- Value of a Variable
7216: sub EXT {
7217:
7218: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
7219: unless ($varname) { return ''; }
7220: #get real user name/domain, courseid and symb
7221: my $courseid;
7222: my $publicuser;
7223: if ($symbparm) {
7224: $symbparm=&get_symb_from_alias($symbparm);
7225: }
7226: if (!($uname && $udom)) {
7227: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
7228: if (!$symbparm) { $symbparm=$cursymb; }
7229: } else {
7230: $courseid=$env{'request.course.id'};
7231: }
7232: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
7233: my $rest;
7234: if (defined($therest[0])) {
7235: $rest=join('.',@therest);
7236: } else {
7237: $rest='';
7238: }
7239:
7240: my $qualifierrest=$qualifier;
7241: if ($rest) { $qualifierrest.='.'.$rest; }
7242: my $spacequalifierrest=$space;
7243: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
7244: if ($realm eq 'user') {
7245: # --------------------------------------------------------------- user.resource
7246: if ($space eq 'resource') {
7247: if ( (defined($Apache::lonhomework::parsing_a_problem)
7248: || defined($Apache::lonhomework::parsing_a_task))
7249: &&
7250: ($symbparm eq &symbread()) ) {
7251: # if we are in the middle of processing the resource the
7252: # get the value we are planning on committing
7253: if (defined($Apache::lonhomework::results{$qualifierrest})) {
7254: return $Apache::lonhomework::results{$qualifierrest};
7255: } else {
7256: return $Apache::lonhomework::history{$qualifierrest};
7257: }
7258: } else {
7259: my %restored;
7260: if ($publicuser || $env{'request.state'} eq 'construct') {
7261: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
7262: } else {
7263: %restored=&restore($symbparm,$courseid,$udom,$uname);
7264: }
7265: return $restored{$qualifierrest};
7266: }
7267: # ----------------------------------------------------------------- user.access
7268: } elsif ($space eq 'access') {
7269: # FIXME - not supporting calls for a specific user
7270: return &allowed($qualifier,$rest);
7271: # ------------------------------------------ user.preferences, user.environment
7272: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
7273: if (($uname eq $env{'user.name'}) &&
7274: ($udom eq $env{'user.domain'})) {
7275: return $env{join('.',('environment',$qualifierrest))};
7276: } else {
7277: my %returnhash;
7278: if (!$publicuser) {
7279: %returnhash=&userenvironment($udom,$uname,
7280: $qualifierrest);
7281: }
7282: return $returnhash{$qualifierrest};
7283: }
7284: # ----------------------------------------------------------------- user.course
7285: } elsif ($space eq 'course') {
7286: # FIXME - not supporting calls for a specific user
7287: return $env{join('.',('request.course',$qualifier))};
7288: # ------------------------------------------------------------------- user.role
7289: } elsif ($space eq 'role') {
7290: # FIXME - not supporting calls for a specific user
7291: my ($role,$where)=split(/\./,$env{'request.role'});
7292: if ($qualifier eq 'value') {
7293: return $role;
7294: } elsif ($qualifier eq 'extent') {
7295: return $where;
7296: }
7297: # ----------------------------------------------------------------- user.domain
7298: } elsif ($space eq 'domain') {
7299: return $udom;
7300: # ------------------------------------------------------------------- user.name
7301: } elsif ($space eq 'name') {
7302: return $uname;
7303: # ---------------------------------------------------- Any other user namespace
7304: } else {
7305: my %reply;
7306: if (!$publicuser) {
7307: %reply=&get($space,[$qualifierrest],$udom,$uname);
7308: }
7309: return $reply{$qualifierrest};
7310: }
7311: } elsif ($realm eq 'query') {
7312: # ---------------------------------------------- pull stuff out of query string
7313: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
7314: [$spacequalifierrest]);
7315: return $env{'form.'.$spacequalifierrest};
7316: } elsif ($realm eq 'request') {
7317: # ------------------------------------------------------------- request.browser
7318: if ($space eq 'browser') {
7319: if ($qualifier eq 'textremote') {
7320: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
7321: return 1;
7322: } else {
7323: return 0;
7324: }
7325: } else {
7326: return $env{'browser.'.$qualifier};
7327: }
7328: # ------------------------------------------------------------ request.filename
7329: } else {
7330: return $env{'request.'.$spacequalifierrest};
7331: }
7332: } elsif ($realm eq 'course') {
7333: # ---------------------------------------------------------- course.description
7334: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
7335: } elsif ($realm eq 'resource') {
7336:
7337: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
7338: if (!$symbparm) { $symbparm=&symbread(); }
7339: }
7340:
7341: if ($space eq 'title') {
7342: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
7343: return &gettitle($symbparm);
7344: }
7345:
7346: if ($space eq 'map') {
7347: my ($map) = &decode_symb($symbparm);
7348: return &symbread($map);
7349: }
7350: if ($space eq 'filename') {
7351: if ($symbparm) {
7352: return &clutter((&decode_symb($symbparm))[2]);
7353: }
7354: return &hreflocation('',$env{'request.filename'});
7355: }
7356:
7357: my ($section, $group, @groups);
7358: my ($courselevelm,$courselevel);
7359: if ($symbparm && defined($courseid) &&
7360: $courseid eq $env{'request.course.id'}) {
7361:
7362: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
7363:
7364: # ----------------------------------------------------- Cascading lookup scheme
7365: my $symbp=$symbparm;
7366: my $mapp=&deversion((&decode_symb($symbp))[0]);
7367:
7368: my $symbparm=$symbp.'.'.$spacequalifierrest;
7369: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
7370:
7371: if (($env{'user.name'} eq $uname) &&
7372: ($env{'user.domain'} eq $udom)) {
7373: $section=$env{'request.course.sec'};
7374: @groups = split(/:/,$env{'request.course.groups'});
7375: @groups=&sort_course_groups($courseid,@groups);
7376: } else {
7377: if (! defined($usection)) {
7378: $section=&getsection($udom,$uname,$courseid);
7379: } else {
7380: $section = $usection;
7381: }
7382: @groups = &get_users_groups($udom,$uname,$courseid);
7383: }
7384:
7385: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
7386: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
7387: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
7388:
7389: $courselevel=$courseid.'.'.$spacequalifierrest;
7390: my $courselevelr=$courseid.'.'.$symbparm;
7391: $courselevelm=$courseid.'.'.$mapparm;
7392:
7393: # ----------------------------------------------------------- first, check user
7394:
7395: my $userreply=&resdata($uname,$udom,'user',
7396: ([$courselevelr,'resource'],
7397: [$courselevelm,'map' ],
7398: [$courselevel, 'course' ]));
7399: if (defined($userreply)) { return &get_reply($userreply); }
7400:
7401: # ------------------------------------------------ second, check some of course
7402: my $coursereply;
7403: if (@groups > 0) {
7404: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
7405: $mapparm,$spacequalifierrest);
7406: if (defined($coursereply)) { return &get_reply($coursereply); }
7407: }
7408:
7409: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
7410: $env{'course.'.$courseid.'.domain'},
7411: 'course',
7412: ([$seclevelr, 'resource'],
7413: [$seclevelm, 'map' ],
7414: [$seclevel, 'course' ],
7415: [$courselevelr,'resource']));
7416: if (defined($coursereply)) { return &get_reply($coursereply); }
7417:
7418: # ------------------------------------------------------ third, check map parms
7419: my %parmhash=();
7420: my $thisparm='';
7421: if (tie(%parmhash,'GDBM_File',
7422: $env{'request.course.fn'}.'_parms.db',
7423: &GDBM_READER(),0640)) {
7424: $thisparm=$parmhash{$symbparm};
7425: untie(%parmhash);
7426: }
7427: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
7428: }
7429: # ------------------------------------------ fourth, look in resource metadata
7430:
7431: $spacequalifierrest=~s/\./\_/;
7432: my $filename;
7433: if (!$symbparm) { $symbparm=&symbread(); }
7434: if ($symbparm) {
7435: $filename=(&decode_symb($symbparm))[2];
7436: } else {
7437: $filename=$env{'request.filename'};
7438: }
7439: my $metadata=&metadata($filename,$spacequalifierrest);
7440: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
7441: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
7442: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
7443:
7444: # ---------------------------------------------- fourth, look in rest of course
7445: if ($symbparm && defined($courseid) &&
7446: $courseid eq $env{'request.course.id'}) {
7447: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
7448: $env{'course.'.$courseid.'.domain'},
7449: 'course',
7450: ([$courselevelm,'map' ],
7451: [$courselevel, 'course']));
7452: if (defined($coursereply)) { return &get_reply($coursereply); }
7453: }
7454: # ------------------------------------------------------------------ Cascade up
7455: unless ($space eq '0') {
7456: my @parts=split(/_/,$space);
7457: my $id=pop(@parts);
7458: my $part=join('_',@parts);
7459: if ($part eq '') { $part='0'; }
7460: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
7461: $symbparm,$udom,$uname,$section,1);
7462: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
7463: }
7464: if ($recurse) { return undef; }
7465: my $pack_def=&packages_tab_default($filename,$varname);
7466: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
7467: # ---------------------------------------------------- Any other user namespace
7468: } elsif ($realm eq 'environment') {
7469: # ----------------------------------------------------------------- environment
7470: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
7471: return $env{'environment.'.$spacequalifierrest};
7472: } else {
7473: if ($uname eq 'anonymous' && $udom eq '') {
7474: return '';
7475: }
7476: my %returnhash=&userenvironment($udom,$uname,
7477: $spacequalifierrest);
7478: return $returnhash{$spacequalifierrest};
7479: }
7480: } elsif ($realm eq 'system') {
7481: # ----------------------------------------------------------------- system.time
7482: if ($space eq 'time') {
7483: return time;
7484: }
7485: } elsif ($realm eq 'server') {
7486: # ----------------------------------------------------------------- system.time
7487: if ($space eq 'name') {
7488: return $ENV{'SERVER_NAME'};
7489: }
7490: }
7491: return '';
7492: }
7493:
7494: sub get_reply {
7495: my ($reply_value) = @_;
7496: if (ref($reply_value) eq 'ARRAY') {
7497: if (wantarray) {
7498: return @$reply_value;
7499: }
7500: return $reply_value->[0];
7501: } else {
7502: return $reply_value;
7503: }
7504: }
7505:
7506: sub check_group_parms {
7507: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
7508: my @groupitems = ();
7509: my $resultitem;
7510: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
7511: foreach my $group (@{$groups}) {
7512: foreach my $level (@levels) {
7513: my $item = $courseid.'.['.$group.'].'.$level->[0];
7514: push(@groupitems,[$item,$level->[1]]);
7515: }
7516: }
7517: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
7518: $env{'course.'.$courseid.'.domain'},
7519: 'course',@groupitems);
7520: return $coursereply;
7521: }
7522:
7523: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
7524: my ($courseid,@groups) = @_;
7525: @groups = sort(@groups);
7526: return @groups;
7527: }
7528:
7529: sub packages_tab_default {
7530: my ($uri,$varname)=@_;
7531: my (undef,$part,$name)=split(/\./,$varname);
7532:
7533: my (@extension,@specifics,$do_default);
7534: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
7535: my ($pack_type,$pack_part)=split(/_/,$package,2);
7536: if ($pack_type eq 'default') {
7537: $do_default=1;
7538: } elsif ($pack_type eq 'extension') {
7539: push(@extension,[$package,$pack_type,$pack_part]);
7540: } elsif ($pack_part eq $part || $pack_type eq 'part') {
7541: # only look at packages defaults for packages that this id is
7542: push(@specifics,[$package,$pack_type,$pack_part]);
7543: }
7544: }
7545: # first look for a package that matches the requested part id
7546: foreach my $package (@specifics) {
7547: my (undef,$pack_type,$pack_part)=@{$package};
7548: next if ($pack_part ne $part);
7549: if (defined($packagetab{"$pack_type&$name&default"})) {
7550: return $packagetab{"$pack_type&$name&default"};
7551: }
7552: }
7553: # look for any possible matching non extension_ package
7554: foreach my $package (@specifics) {
7555: my (undef,$pack_type,$pack_part)=@{$package};
7556: if (defined($packagetab{"$pack_type&$name&default"})) {
7557: return $packagetab{"$pack_type&$name&default"};
7558: }
7559: if ($pack_type eq 'part') { $pack_part='0'; }
7560: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
7561: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
7562: }
7563: }
7564: # look for any posible extension_ match
7565: foreach my $package (@extension) {
7566: my ($package,$pack_type)=@{$package};
7567: if (defined($packagetab{"$pack_type&$name&default"})) {
7568: return $packagetab{"$pack_type&$name&default"};
7569: }
7570: if (defined($packagetab{$package."&$name&default"})) {
7571: return $packagetab{$package."&$name&default"};
7572: }
7573: }
7574: # look for a global default setting
7575: if ($do_default && defined($packagetab{"default&$name&default"})) {
7576: return $packagetab{"default&$name&default"};
7577: }
7578: return undef;
7579: }
7580:
7581: sub add_prefix_and_part {
7582: my ($prefix,$part)=@_;
7583: my $keyroot;
7584: if (defined($prefix) && $prefix !~ /^__/) {
7585: # prefix that has a part already
7586: $keyroot=$prefix;
7587: } elsif (defined($prefix)) {
7588: # prefix that is missing a part
7589: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
7590: } else {
7591: # no prefix at all
7592: if (defined($part)) { $keyroot='_'.$part; }
7593: }
7594: return $keyroot;
7595: }
7596:
7597: # ---------------------------------------------------------------- Get metadata
7598:
7599: my %metaentry;
7600: sub metadata {
7601: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
7602: $uri=&declutter($uri);
7603: # if it is a non metadata possible uri return quickly
7604: if (($uri eq '') ||
7605: (($uri =~ m|^/*adm/|) &&
7606: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
7607: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
7608: return undef;
7609: }
7610: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
7611: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
7612: return undef;
7613: }
7614: my $filename=$uri;
7615: $uri=~s/\.meta$//;
7616: #
7617: # Is the metadata already cached?
7618: # Look at timestamp of caching
7619: # Everything is cached by the main uri, libraries are never directly cached
7620: #
7621: if (!defined($liburi)) {
7622: my ($result,$cached)=&is_cached_new('meta',$uri);
7623: if (defined($cached)) { return $result->{':'.$what}; }
7624: }
7625: {
7626: #
7627: # Is this a recursive call for a library?
7628: #
7629: # if (! exists($metacache{$uri})) {
7630: # $metacache{$uri}={};
7631: # }
7632: my $cachetime = 60*60;
7633: if ($liburi) {
7634: $liburi=&declutter($liburi);
7635: $filename=$liburi;
7636: } else {
7637: &devalidate_cache_new('meta',$uri);
7638: undef(%metaentry);
7639: }
7640: my %metathesekeys=();
7641: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
7642: my $metastring;
7643: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
7644: my $which = &hreflocation('','/'.($liburi || $uri));
7645: $metastring =
7646: &Apache::lonnet::ssi_body($which,
7647: ('grade_target' => 'meta'));
7648: $cachetime = 1; # only want this cached in the child not long term
7649: } elsif ($uri !~ m -^(editupload)/-) {
7650: my $file=&filelocation('',&clutter($filename));
7651: #push(@{$metaentry{$uri.'.file'}},$file);
7652: $metastring=&getfile($file);
7653: }
7654: my $parser=HTML::LCParser->new(\$metastring);
7655: my $token;
7656: undef %metathesekeys;
7657: while ($token=$parser->get_token) {
7658: if ($token->[0] eq 'S') {
7659: if (defined($token->[2]->{'package'})) {
7660: #
7661: # This is a package - get package info
7662: #
7663: my $package=$token->[2]->{'package'};
7664: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7665: if (defined($token->[2]->{'id'})) {
7666: $keyroot.='_'.$token->[2]->{'id'};
7667: }
7668: if ($metaentry{':packages'}) {
7669: $metaentry{':packages'}.=','.$package.$keyroot;
7670: } else {
7671: $metaentry{':packages'}=$package.$keyroot;
7672: }
7673: foreach my $pack_entry (keys(%packagetab)) {
7674: my $part=$keyroot;
7675: $part=~s/^\_//;
7676: if ($pack_entry=~/^\Q$package\E\&/ ||
7677: $pack_entry=~/^\Q$package\E_0\&/) {
7678: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7679: # ignore package.tab specified default values
7680: # here &package_tab_default() will fetch those
7681: if ($subp eq 'default') { next; }
7682: my $value=$packagetab{$pack_entry};
7683: my $unikey;
7684: if ($pack =~ /_0$/) {
7685: $unikey='parameter_0_'.$name;
7686: $part=0;
7687: } else {
7688: $unikey='parameter'.$keyroot.'_'.$name;
7689: }
7690: if ($subp eq 'display') {
7691: $value.=' [Part: '.$part.']';
7692: }
7693: $metaentry{':'.$unikey.'.part'}=$part;
7694: $metathesekeys{$unikey}=1;
7695: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7696: $metaentry{':'.$unikey.'.'.$subp}=$value;
7697: }
7698: if (defined($metaentry{':'.$unikey.'.default'})) {
7699: $metaentry{':'.$unikey}=
7700: $metaentry{':'.$unikey.'.default'};
7701: }
7702: }
7703: }
7704: } else {
7705: #
7706: # This is not a package - some other kind of start tag
7707: #
7708: my $entry=$token->[1];
7709: my $unikey;
7710: if ($entry eq 'import') {
7711: $unikey='';
7712: } else {
7713: $unikey=$entry;
7714: }
7715: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7716:
7717: if (defined($token->[2]->{'id'})) {
7718: $unikey.='_'.$token->[2]->{'id'};
7719: }
7720:
7721: if ($entry eq 'import') {
7722: #
7723: # Importing a library here
7724: #
7725: if ($depthcount<20) {
7726: my $location=$parser->get_text('/import');
7727: my $dir=$filename;
7728: $dir=~s|[^/]*$||;
7729: $location=&filelocation($dir,$location);
7730: my $metadata =
7731: &metadata($uri,'keys', $location,$unikey,
7732: $depthcount+1);
7733: foreach my $meta (split(',',$metadata)) {
7734: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7735: $metathesekeys{$meta}=1;
7736: }
7737: }
7738: } else {
7739:
7740: if (defined($token->[2]->{'name'})) {
7741: $unikey.='_'.$token->[2]->{'name'};
7742: }
7743: $metathesekeys{$unikey}=1;
7744: foreach my $param (@{$token->[3]}) {
7745: $metaentry{':'.$unikey.'.'.$param} =
7746: $token->[2]->{$param};
7747: }
7748: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7749: my $default=$metaentry{':'.$unikey.'.default'};
7750: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7751: # only ws inside the tag, and not in default, so use default
7752: # as value
7753: $metaentry{':'.$unikey}=$default;
7754: } elsif ( $internaltext =~ /\S/ ) {
7755: # something interesting inside the tag
7756: $metaentry{':'.$unikey}=$internaltext;
7757: } else {
7758: # no interesting values, don't set a default
7759: }
7760: # end of not-a-package not-a-library import
7761: }
7762: # end of not-a-package start tag
7763: }
7764: # the next is the end of "start tag"
7765: }
7766: }
7767: my ($extension) = ($uri =~ /\.(\w+)$/);
7768: $extension = lc($extension);
7769: if ($extension eq 'htm') { $extension='html'; }
7770:
7771: foreach my $key (keys(%packagetab)) {
7772: #no specific packages #how's our extension
7773: if ($key!~/^extension_\Q$extension\E&/) { next; }
7774: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7775: \%metathesekeys);
7776: }
7777:
7778: if (!exists($metaentry{':packages'})
7779: || $packagetab{"import_defaults&extension_$extension"}) {
7780: foreach my $key (keys(%packagetab)) {
7781: #no specific packages well let's get default then
7782: if ($key!~/^default&/) { next; }
7783: &metadata_create_package_def($uri,$key,'default',
7784: \%metathesekeys);
7785: }
7786: }
7787: # are there custom rights to evaluate
7788: if ($metaentry{':copyright'} eq 'custom') {
7789:
7790: #
7791: # Importing a rights file here
7792: #
7793: unless ($depthcount) {
7794: my $location=$metaentry{':customdistributionfile'};
7795: my $dir=$filename;
7796: $dir=~s|[^/]*$||;
7797: $location=&filelocation($dir,$location);
7798: my $rights_metadata =
7799: &metadata($uri,'keys',$location,'_rights',
7800: $depthcount+1);
7801: foreach my $rights (split(',',$rights_metadata)) {
7802: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7803: $metathesekeys{$rights}=1;
7804: }
7805: }
7806: }
7807: # uniqifiy package listing
7808: my %seen;
7809: my @uniq_packages =
7810: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7811: $metaentry{':packages'} = join(',',@uniq_packages);
7812:
7813: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7814: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7815: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7816: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7817: # this is the end of "was not already recently cached
7818: }
7819: return $metaentry{':'.$what};
7820: }
7821:
7822: sub metadata_create_package_def {
7823: my ($uri,$key,$package,$metathesekeys)=@_;
7824: my ($pack,$name,$subp)=split(/\&/,$key);
7825: if ($subp eq 'default') { next; }
7826:
7827: if (defined($metaentry{':packages'})) {
7828: $metaentry{':packages'}.=','.$package;
7829: } else {
7830: $metaentry{':packages'}=$package;
7831: }
7832: my $value=$packagetab{$key};
7833: my $unikey;
7834: $unikey='parameter_0_'.$name;
7835: $metaentry{':'.$unikey.'.part'}=0;
7836: $$metathesekeys{$unikey}=1;
7837: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7838: $metaentry{':'.$unikey.'.'.$subp}=$value;
7839: }
7840: if (defined($metaentry{':'.$unikey.'.default'})) {
7841: $metaentry{':'.$unikey}=
7842: $metaentry{':'.$unikey.'.default'};
7843: }
7844: }
7845:
7846: sub metadata_generate_part0 {
7847: my ($metadata,$metacache,$uri) = @_;
7848: my %allnames;
7849: foreach my $metakey (keys(%$metadata)) {
7850: if ($metakey=~/^parameter\_(.*)/) {
7851: my $part=$$metacache{':'.$metakey.'.part'};
7852: my $name=$$metacache{':'.$metakey.'.name'};
7853: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7854: $allnames{$name}=$part;
7855: }
7856: }
7857: }
7858: foreach my $name (keys(%allnames)) {
7859: $$metadata{"parameter_0_$name"}=1;
7860: my $key=":parameter_0_$name";
7861: $$metacache{"$key.part"}='0';
7862: $$metacache{"$key.name"}=$name;
7863: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7864: $allnames{$name}.'_'.$name.
7865: '.type'};
7866: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7867: '.display'};
7868: my $expr='[Part: '.$allnames{$name}.']';
7869: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7870: $$metacache{"$key.display"}=$olddis;
7871: }
7872: }
7873:
7874: # ------------------------------------------------------ Devalidate title cache
7875:
7876: sub devalidate_title_cache {
7877: my ($url)=@_;
7878: if (!$env{'request.course.id'}) { return; }
7879: my $symb=&symbread($url);
7880: if (!$symb) { return; }
7881: my $key=$env{'request.course.id'}."\0".$symb;
7882: &devalidate_cache_new('title',$key);
7883: }
7884:
7885: # ------------------------------------------------- Get the title of a resource
7886:
7887: sub gettitle {
7888: my $urlsymb=shift;
7889: my $symb=&symbread($urlsymb);
7890: if ($symb) {
7891: my $key=$env{'request.course.id'}."\0".$symb;
7892: my ($result,$cached)=&is_cached_new('title',$key);
7893: if (defined($cached)) {
7894: return $result;
7895: }
7896: my ($map,$resid,$url)=&decode_symb($symb);
7897: my $title='';
7898: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7899: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7900: } else {
7901: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7902: &GDBM_READER(),0640)) {
7903: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7904: $title=$bighash{'title_'.$mapid.'.'.$resid};
7905: untie(%bighash);
7906: }
7907: }
7908: $title=~s/\&colon\;/\:/gs;
7909: if ($title) {
7910: return &do_cache_new('title',$key,$title,600);
7911: }
7912: $urlsymb=$url;
7913: }
7914: my $title=&metadata($urlsymb,'title');
7915: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7916: return $title;
7917: }
7918:
7919: sub get_slot {
7920: my ($which,$cnum,$cdom)=@_;
7921: if (!$cnum || !$cdom) {
7922: (undef,my $courseid)=&whichuser();
7923: $cdom=$env{'course.'.$courseid.'.domain'};
7924: $cnum=$env{'course.'.$courseid.'.num'};
7925: }
7926: my $key=join("\0",'slots',$cdom,$cnum,$which);
7927: my %slotinfo;
7928: if (exists($remembered{$key})) {
7929: $slotinfo{$which} = $remembered{$key};
7930: } else {
7931: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7932: &Apache::lonhomework::showhash(%slotinfo);
7933: my ($tmp)=keys(%slotinfo);
7934: if ($tmp=~/^error:/) { return (); }
7935: $remembered{$key} = $slotinfo{$which};
7936: }
7937: if (ref($slotinfo{$which}) eq 'HASH') {
7938: return %{$slotinfo{$which}};
7939: }
7940: return $slotinfo{$which};
7941: }
7942: # ------------------------------------------------- Update symbolic store links
7943:
7944: sub symblist {
7945: my ($mapname,%newhash)=@_;
7946: $mapname=&deversion(&declutter($mapname));
7947: my %hash;
7948: if (($env{'request.course.fn'}) && (%newhash)) {
7949: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7950: &GDBM_WRCREAT(),0640)) {
7951: foreach my $url (keys(%newhash)) {
7952: next if ($url eq 'last_known'
7953: && $env{'form.no_update_last_known'});
7954: $hash{declutter($url)}=&encode_symb($mapname,
7955: $newhash{$url}->[1],
7956: $newhash{$url}->[0]);
7957: }
7958: if (untie(%hash)) {
7959: return 'ok';
7960: }
7961: }
7962: }
7963: return 'error';
7964: }
7965:
7966: # --------------------------------------------------------------- Verify a symb
7967:
7968: sub symbverify {
7969: my ($symb,$thisurl)=@_;
7970: my $thisfn=$thisurl;
7971: $thisfn=&declutter($thisfn);
7972: # direct jump to resource in page or to a sequence - will construct own symbs
7973: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7974: # check URL part
7975: my ($map,$resid,$url)=&decode_symb($symb);
7976:
7977: unless ($url eq $thisfn) { return 0; }
7978:
7979: $symb=&symbclean($symb);
7980: $thisurl=&deversion($thisurl);
7981: $thisfn=&deversion($thisfn);
7982:
7983: my %bighash;
7984: my $okay=0;
7985:
7986: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7987: &GDBM_READER(),0640)) {
7988: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7989: unless ($ids) {
7990: $ids=$bighash{'ids_/'.$thisurl};
7991: }
7992: if ($ids) {
7993: # ------------------------------------------------------------------- Has ID(s)
7994: foreach my $id (split(/\,/,$ids)) {
7995: my ($mapid,$resid)=split(/\./,$id);
7996: if (
7997: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7998: eq $symb) {
7999: if (($env{'request.role.adv'}) ||
8000: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
8001: $okay=1;
8002: }
8003: }
8004: }
8005: }
8006: untie(%bighash);
8007: }
8008: return $okay;
8009: }
8010:
8011: # --------------------------------------------------------------- Clean-up symb
8012:
8013: sub symbclean {
8014: my $symb=shift;
8015: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8016: # remove version from map
8017: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
8018:
8019: # remove version from URL
8020: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
8021:
8022: # remove wrapper
8023:
8024: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
8025: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
8026: return $symb;
8027: }
8028:
8029: # ---------------------------------------------- Split symb to find map and url
8030:
8031: sub encode_symb {
8032: my ($map,$resid,$url)=@_;
8033: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
8034: }
8035:
8036: sub decode_symb {
8037: my $symb=shift;
8038: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8039: my ($map,$resid,$url)=split(/___/,$symb);
8040: return (&fixversion($map),$resid,&fixversion($url));
8041: }
8042:
8043: sub fixversion {
8044: my $fn=shift;
8045: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
8046: my %bighash;
8047: my $uri=&clutter($fn);
8048: my $key=$env{'request.course.id'}.'_'.$uri;
8049: # is this cached?
8050: my ($result,$cached)=&is_cached_new('courseresversion',$key);
8051: if (defined($cached)) { return $result; }
8052: # unfortunately not cached, or expired
8053: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8054: &GDBM_READER(),0640)) {
8055: if ($bighash{'version_'.$uri}) {
8056: my $version=$bighash{'version_'.$uri};
8057: unless (($version eq 'mostrecent') ||
8058: ($version==&getversion($uri))) {
8059: $uri=~s/\.(\w+)$/\.$version\.$1/;
8060: }
8061: }
8062: untie %bighash;
8063: }
8064: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
8065: }
8066:
8067: sub deversion {
8068: my $url=shift;
8069: $url=~s/\.\d+\.(\w+)$/\.$1/;
8070: return $url;
8071: }
8072:
8073: # ------------------------------------------------------ Return symb list entry
8074:
8075: sub symbread {
8076: my ($thisfn,$donotrecurse)=@_;
8077: my $cache_str='request.symbread.cached.'.$thisfn;
8078: if (defined($env{$cache_str})) { return $env{$cache_str}; }
8079: # no filename provided? try from environment
8080: unless ($thisfn) {
8081: if ($env{'request.symb'}) {
8082: return $env{$cache_str}=&symbclean($env{'request.symb'});
8083: }
8084: $thisfn=$env{'request.filename'};
8085: }
8086: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8087: # is that filename actually a symb? Verify, clean, and return
8088: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
8089: if (&symbverify($thisfn,$1)) {
8090: return $env{$cache_str}=&symbclean($thisfn);
8091: }
8092: }
8093: $thisfn=declutter($thisfn);
8094: my %hash;
8095: my %bighash;
8096: my $syval='';
8097: if (($env{'request.course.fn'}) && ($thisfn)) {
8098: my $targetfn = $thisfn;
8099: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
8100: $targetfn = 'adm/wrapper/'.$thisfn;
8101: }
8102: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
8103: $targetfn=$1;
8104: }
8105: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8106: &GDBM_READER(),0640)) {
8107: $syval=$hash{$targetfn};
8108: untie(%hash);
8109: }
8110: # ---------------------------------------------------------- There was an entry
8111: if ($syval) {
8112: #unless ($syval=~/\_\d+$/) {
8113: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
8114: #&appenv({'request.ambiguous' => $thisfn});
8115: #return $env{$cache_str}='';
8116: #}
8117: #$syval.=$1;
8118: #}
8119: } else {
8120: # ------------------------------------------------------- Was not in symb table
8121: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8122: &GDBM_READER(),0640)) {
8123: # ---------------------------------------------- Get ID(s) for current resource
8124: my $ids=$bighash{'ids_'.&clutter($thisfn)};
8125: unless ($ids) {
8126: $ids=$bighash{'ids_/'.$thisfn};
8127: }
8128: unless ($ids) {
8129: # alias?
8130: $ids=$bighash{'mapalias_'.$thisfn};
8131: }
8132: if ($ids) {
8133: # ------------------------------------------------------------------- Has ID(s)
8134: my @possibilities=split(/\,/,$ids);
8135: if ($#possibilities==0) {
8136: # ----------------------------------------------- There is only one possibility
8137: my ($mapid,$resid)=split(/\./,$ids);
8138: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8139: $resid,$thisfn);
8140: } elsif (!$donotrecurse) {
8141: # ------------------------------------------ There is more than one possibility
8142: my $realpossible=0;
8143: foreach my $id (@possibilities) {
8144: my $file=$bighash{'src_'.$id};
8145: if (&allowed('bre',$file)) {
8146: my ($mapid,$resid)=split(/\./,$id);
8147: if ($bighash{'map_type_'.$mapid} ne 'page') {
8148: $realpossible++;
8149: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8150: $resid,$thisfn);
8151: }
8152: }
8153: }
8154: if ($realpossible!=1) { $syval=''; }
8155: } else {
8156: $syval='';
8157: }
8158: }
8159: untie(%bighash)
8160: }
8161: }
8162: if ($syval) {
8163: return $env{$cache_str}=$syval;
8164: }
8165: }
8166: &appenv({'request.ambiguous' => $thisfn});
8167: return $env{$cache_str}='';
8168: }
8169:
8170: # ---------------------------------------------------------- Return random seed
8171:
8172: sub numval {
8173: my $txt=shift;
8174: $txt=~tr/A-J/0-9/;
8175: $txt=~tr/a-j/0-9/;
8176: $txt=~tr/K-T/0-9/;
8177: $txt=~tr/k-t/0-9/;
8178: $txt=~tr/U-Z/0-5/;
8179: $txt=~tr/u-z/0-5/;
8180: $txt=~s/\D//g;
8181: if ($_64bit) { if ($txt > 2**32) { return -1; } }
8182: return int($txt);
8183: }
8184:
8185: sub numval2 {
8186: my $txt=shift;
8187: $txt=~tr/A-J/0-9/;
8188: $txt=~tr/a-j/0-9/;
8189: $txt=~tr/K-T/0-9/;
8190: $txt=~tr/k-t/0-9/;
8191: $txt=~tr/U-Z/0-5/;
8192: $txt=~tr/u-z/0-5/;
8193: $txt=~s/\D//g;
8194: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
8195: my $total;
8196: foreach my $val (@txts) { $total+=$val; }
8197: if ($_64bit) { if ($total > 2**32) { return -1; } }
8198: return int($total);
8199: }
8200:
8201: sub numval3 {
8202: use integer;
8203: my $txt=shift;
8204: $txt=~tr/A-J/0-9/;
8205: $txt=~tr/a-j/0-9/;
8206: $txt=~tr/K-T/0-9/;
8207: $txt=~tr/k-t/0-9/;
8208: $txt=~tr/U-Z/0-5/;
8209: $txt=~tr/u-z/0-5/;
8210: $txt=~s/\D//g;
8211: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
8212: my $total;
8213: foreach my $val (@txts) { $total+=$val; }
8214: if ($_64bit) { $total=(($total<<32)>>32); }
8215: return $total;
8216: }
8217:
8218: sub digest {
8219: my ($data)=@_;
8220: my $digest=&Digest::MD5::md5($data);
8221: my ($a,$b,$c,$d)=unpack("iiii",$digest);
8222: my ($e,$f);
8223: {
8224: use integer;
8225: $e=($a+$b);
8226: $f=($c+$d);
8227: if ($_64bit) {
8228: $e=(($e<<32)>>32);
8229: $f=(($f<<32)>>32);
8230: }
8231: }
8232: if (wantarray) {
8233: return ($e,$f);
8234: } else {
8235: my $g;
8236: {
8237: use integer;
8238: $g=($e+$f);
8239: if ($_64bit) {
8240: $g=(($g<<32)>>32);
8241: }
8242: }
8243: return $g;
8244: }
8245: }
8246:
8247: sub latest_rnd_algorithm_id {
8248: return '64bit5';
8249: }
8250:
8251: sub get_rand_alg {
8252: my ($courseid)=@_;
8253: if (!$courseid) { $courseid=(&whichuser())[1]; }
8254: if ($courseid) {
8255: return $env{"course.$courseid.rndseed"};
8256: }
8257: return &latest_rnd_algorithm_id();
8258: }
8259:
8260: sub validCODE {
8261: my ($CODE)=@_;
8262: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
8263: return 0;
8264: }
8265:
8266: sub getCODE {
8267: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
8268: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
8269: defined($Apache::lonhomework::parsing_a_task) ) &&
8270: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
8271: return $Apache::lonhomework::history{'resource.CODE'};
8272: }
8273: return undef;
8274: }
8275:
8276: sub rndseed {
8277: my ($symb,$courseid,$domain,$username)=@_;
8278: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
8279: if (!defined($symb)) {
8280: unless ($symb=$wsymb) { return time; }
8281: }
8282: if (!$courseid) { $courseid=$wcourseid; }
8283: if (!$domain) { $domain=$wdomain; }
8284: if (!$username) { $username=$wusername }
8285: my $which=&get_rand_alg();
8286:
8287: if (defined(&getCODE())) {
8288: if ($which eq '64bit5') {
8289: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
8290: } elsif ($which eq '64bit4') {
8291: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
8292: } else {
8293: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
8294: }
8295: } elsif ($which eq '64bit5') {
8296: return &rndseed_64bit5($symb,$courseid,$domain,$username);
8297: } elsif ($which eq '64bit4') {
8298: return &rndseed_64bit4($symb,$courseid,$domain,$username);
8299: } elsif ($which eq '64bit3') {
8300: return &rndseed_64bit3($symb,$courseid,$domain,$username);
8301: } elsif ($which eq '64bit2') {
8302: return &rndseed_64bit2($symb,$courseid,$domain,$username);
8303: } elsif ($which eq '64bit') {
8304: return &rndseed_64bit($symb,$courseid,$domain,$username);
8305: }
8306: return &rndseed_32bit($symb,$courseid,$domain,$username);
8307: }
8308:
8309: sub rndseed_32bit {
8310: my ($symb,$courseid,$domain,$username)=@_;
8311: {
8312: use integer;
8313: my $symbchck=unpack("%32C*",$symb) << 27;
8314: my $symbseed=numval($symb) << 22;
8315: my $namechck=unpack("%32C*",$username) << 17;
8316: my $nameseed=numval($username) << 12;
8317: my $domainseed=unpack("%32C*",$domain) << 7;
8318: my $courseseed=unpack("%32C*",$courseid);
8319: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
8320: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8321: #&logthis("rndseed :$num:$symb");
8322: if ($_64bit) { $num=(($num<<32)>>32); }
8323: return $num;
8324: }
8325: }
8326:
8327: sub rndseed_64bit {
8328: my ($symb,$courseid,$domain,$username)=@_;
8329: {
8330: use integer;
8331: my $symbchck=unpack("%32S*",$symb) << 21;
8332: my $symbseed=numval($symb) << 10;
8333: my $namechck=unpack("%32S*",$username);
8334:
8335: my $nameseed=numval($username) << 21;
8336: my $domainseed=unpack("%32S*",$domain) << 10;
8337: my $courseseed=unpack("%32S*",$courseid);
8338:
8339: my $num1=$symbchck+$symbseed+$namechck;
8340: my $num2=$nameseed+$domainseed+$courseseed;
8341: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8342: #&logthis("rndseed :$num:$symb");
8343: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8344: return "$num1,$num2";
8345: }
8346: }
8347:
8348: sub rndseed_64bit2 {
8349: my ($symb,$courseid,$domain,$username)=@_;
8350: {
8351: use integer;
8352: # strings need to be an even # of cahracters long, it it is odd the
8353: # last characters gets thrown away
8354: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8355: my $symbseed=numval($symb) << 10;
8356: my $namechck=unpack("%32S*",$username.' ');
8357:
8358: my $nameseed=numval($username) << 21;
8359: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8360: my $courseseed=unpack("%32S*",$courseid.' ');
8361:
8362: my $num1=$symbchck+$symbseed+$namechck;
8363: my $num2=$nameseed+$domainseed+$courseseed;
8364: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8365: #&logthis("rndseed :$num:$symb");
8366: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8367: return "$num1,$num2";
8368: }
8369: }
8370:
8371: sub rndseed_64bit3 {
8372: my ($symb,$courseid,$domain,$username)=@_;
8373: {
8374: use integer;
8375: # strings need to be an even # of cahracters long, it it is odd the
8376: # last characters gets thrown away
8377: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8378: my $symbseed=numval2($symb) << 10;
8379: my $namechck=unpack("%32S*",$username.' ');
8380:
8381: my $nameseed=numval2($username) << 21;
8382: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8383: my $courseseed=unpack("%32S*",$courseid.' ');
8384:
8385: my $num1=$symbchck+$symbseed+$namechck;
8386: my $num2=$nameseed+$domainseed+$courseseed;
8387: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8388: #&logthis("rndseed :$num1:$num2:$_64bit");
8389: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8390:
8391: return "$num1:$num2";
8392: }
8393: }
8394:
8395: sub rndseed_64bit4 {
8396: my ($symb,$courseid,$domain,$username)=@_;
8397: {
8398: use integer;
8399: # strings need to be an even # of cahracters long, it it is odd the
8400: # last characters gets thrown away
8401: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8402: my $symbseed=numval3($symb) << 10;
8403: my $namechck=unpack("%32S*",$username.' ');
8404:
8405: my $nameseed=numval3($username) << 21;
8406: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8407: my $courseseed=unpack("%32S*",$courseid.' ');
8408:
8409: my $num1=$symbchck+$symbseed+$namechck;
8410: my $num2=$nameseed+$domainseed+$courseseed;
8411: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8412: #&logthis("rndseed :$num1:$num2:$_64bit");
8413: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8414:
8415: return "$num1:$num2";
8416: }
8417: }
8418:
8419: sub rndseed_64bit5 {
8420: my ($symb,$courseid,$domain,$username)=@_;
8421: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
8422: return "$num1:$num2";
8423: }
8424:
8425: sub rndseed_CODE_64bit {
8426: my ($symb,$courseid,$domain,$username)=@_;
8427: {
8428: use integer;
8429: my $symbchck=unpack("%32S*",$symb.' ') << 16;
8430: my $symbseed=numval2($symb);
8431: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
8432: my $CODEseed=numval(&getCODE());
8433: my $courseseed=unpack("%32S*",$courseid.' ');
8434: my $num1=$symbseed+$CODEchck;
8435: my $num2=$CODEseed+$courseseed+$symbchck;
8436: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
8437: #&logthis("rndseed :$num1:$num2:$symb");
8438: if ($_64bit) { $num1=(($num1<<32)>>32); }
8439: if ($_64bit) { $num2=(($num2<<32)>>32); }
8440: return "$num1:$num2";
8441: }
8442: }
8443:
8444: sub rndseed_CODE_64bit4 {
8445: my ($symb,$courseid,$domain,$username)=@_;
8446: {
8447: use integer;
8448: my $symbchck=unpack("%32S*",$symb.' ') << 16;
8449: my $symbseed=numval3($symb);
8450: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
8451: my $CODEseed=numval3(&getCODE());
8452: my $courseseed=unpack("%32S*",$courseid.' ');
8453: my $num1=$symbseed+$CODEchck;
8454: my $num2=$CODEseed+$courseseed+$symbchck;
8455: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
8456: #&logthis("rndseed :$num1:$num2:$symb");
8457: if ($_64bit) { $num1=(($num1<<32)>>32); }
8458: if ($_64bit) { $num2=(($num2<<32)>>32); }
8459: return "$num1:$num2";
8460: }
8461: }
8462:
8463: sub rndseed_CODE_64bit5 {
8464: my ($symb,$courseid,$domain,$username)=@_;
8465: my $code = &getCODE();
8466: my ($num1,$num2)=&digest("$symb,$courseid,$code");
8467: return "$num1:$num2";
8468: }
8469:
8470: sub setup_random_from_rndseed {
8471: my ($rndseed)=@_;
8472: if ($rndseed =~/([,:])/) {
8473: my ($num1,$num2)=split(/[,:]/,$rndseed);
8474: &Math::Random::random_set_seed(abs($num1),abs($num2));
8475: } else {
8476: &Math::Random::random_set_seed_from_phrase($rndseed);
8477: }
8478: }
8479:
8480: sub latest_receipt_algorithm_id {
8481: return 'receipt3';
8482: }
8483:
8484: sub recunique {
8485: my $fucourseid=shift;
8486: my $unique;
8487: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
8488: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8489: $unique=$env{"course.$fucourseid.internal.encseed"};
8490: } else {
8491: $unique=$perlvar{'lonReceipt'};
8492: }
8493: return unpack("%32C*",$unique);
8494: }
8495:
8496: sub recprefix {
8497: my $fucourseid=shift;
8498: my $prefix;
8499: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
8500: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8501: $prefix=$env{"course.$fucourseid.internal.encpref"};
8502: } else {
8503: $prefix=$perlvar{'lonHostID'};
8504: }
8505: return unpack("%32C*",$prefix);
8506: }
8507:
8508: sub ireceipt {
8509: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
8510:
8511: my $return =&recprefix($fucourseid).'-';
8512:
8513: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
8514: $env{'request.state'} eq 'construct') {
8515: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
8516: return $return;
8517: }
8518:
8519: my $cuname=unpack("%32C*",$funame);
8520: my $cudom=unpack("%32C*",$fudom);
8521: my $cucourseid=unpack("%32C*",$fucourseid);
8522: my $cusymb=unpack("%32C*",$fusymb);
8523: my $cunique=&recunique($fucourseid);
8524: my $cpart=unpack("%32S*",$part);
8525: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
8526:
8527: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
8528:
8529: $return.= ($cunique%$cuname+
8530: $cunique%$cudom+
8531: $cusymb%$cuname+
8532: $cusymb%$cudom+
8533: $cucourseid%$cuname+
8534: $cucourseid%$cudom+
8535: $cpart%$cuname+
8536: $cpart%$cudom);
8537: } else {
8538: $return.= ($cunique%$cuname+
8539: $cunique%$cudom+
8540: $cusymb%$cuname+
8541: $cusymb%$cudom+
8542: $cucourseid%$cuname+
8543: $cucourseid%$cudom);
8544: }
8545: return $return;
8546: }
8547:
8548: sub receipt {
8549: my ($part)=@_;
8550: my ($symb,$courseid,$domain,$name) = &whichuser();
8551: return &ireceipt($name,$domain,$courseid,$symb,$part);
8552: }
8553:
8554: sub whichuser {
8555: my ($passedsymb)=@_;
8556: my ($symb,$courseid,$domain,$name,$publicuser);
8557: if (defined($env{'form.grade_symb'})) {
8558: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
8559: my $allowed=&allowed('vgr',$tmp_courseid);
8560: if (!$allowed &&
8561: exists($env{'request.course.sec'}) &&
8562: $env{'request.course.sec'} !~ /^\s*$/) {
8563: $allowed=&allowed('vgr',$tmp_courseid.
8564: '/'.$env{'request.course.sec'});
8565: }
8566: if ($allowed) {
8567: ($symb)=&get_env_multiple('form.grade_symb');
8568: $courseid=$tmp_courseid;
8569: ($domain)=&get_env_multiple('form.grade_domain');
8570: ($name)=&get_env_multiple('form.grade_username');
8571: return ($symb,$courseid,$domain,$name,$publicuser);
8572: }
8573: }
8574: if (!$passedsymb) {
8575: $symb=&symbread();
8576: } else {
8577: $symb=$passedsymb;
8578: }
8579: $courseid=$env{'request.course.id'};
8580: $domain=$env{'user.domain'};
8581: $name=$env{'user.name'};
8582: if ($name eq 'public' && $domain eq 'public') {
8583: if (!defined($env{'form.username'})) {
8584: $env{'form.username'}.=time.rand(10000000);
8585: }
8586: $name.=$env{'form.username'};
8587: }
8588: return ($symb,$courseid,$domain,$name,$publicuser);
8589:
8590: }
8591:
8592: # ------------------------------------------------------------ Serves up a file
8593: # returns either the contents of the file or
8594: # -1 if the file doesn't exist
8595: #
8596: # if the target is a file that was uploaded via DOCS,
8597: # a check will be made to see if a current copy exists on the local server,
8598: # if it does this will be served, otherwise a copy will be retrieved from
8599: # the home server for the course and stored in /home/httpd/html/userfiles on
8600: # the local server.
8601:
8602: sub getfile {
8603: my ($file) = @_;
8604: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8605: &repcopy($file);
8606: return &readfile($file);
8607: }
8608:
8609: sub repcopy_userfile {
8610: my ($file)=@_;
8611: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8612: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
8613: my ($cdom,$cnum,$filename) =
8614: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
8615: my $uri="/uploaded/$cdom/$cnum/$filename";
8616: if (-e "$file") {
8617: # we already have a local copy, check it out
8618: my @fileinfo = stat($file);
8619: my $rtncode;
8620: my $info;
8621: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
8622: if ($lwpresp ne 'ok') {
8623: # there is no such file anymore, even though we had a local copy
8624: if ($rtncode eq '404') {
8625: unlink($file);
8626: }
8627: return -1;
8628: }
8629: if ($info < $fileinfo[9]) {
8630: # nice, the file we have is up-to-date, just say okay
8631: return 'ok';
8632: } else {
8633: # the file is outdated, get rid of it
8634: unlink($file);
8635: }
8636: }
8637: # one way or the other, at this point, we don't have the file
8638: # construct the correct path for the file
8639: my @parts = ($cdom,$cnum);
8640: if ($filename =~ m|^(.+)/[^/]+$|) {
8641: push @parts, split(/\//,$1);
8642: }
8643: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
8644: foreach my $part (@parts) {
8645: $path .= '/'.$part;
8646: if (!-e $path) {
8647: mkdir($path,0770);
8648: }
8649: }
8650: # now the path exists for sure
8651: # get a user agent
8652: my $ua=new LWP::UserAgent;
8653: my $transferfile=$file.'.in.transfer';
8654: # FIXME: this should flock
8655: if (-e $transferfile) { return 'ok'; }
8656: my $request;
8657: $uri=~s/^\///;
8658: my $homeserver = &homeserver($cnum,$cdom);
8659: my $protocol = $protocol{$homeserver};
8660: $protocol = 'http' if ($protocol ne 'https');
8661: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
8662: my $response=$ua->request($request,$transferfile);
8663: # did it work?
8664: if ($response->is_error()) {
8665: unlink($transferfile);
8666: &logthis("Userfile repcopy failed for $uri");
8667: return -1;
8668: }
8669: # worked, rename the transfer file
8670: rename($transferfile,$file);
8671: return 'ok';
8672: }
8673:
8674: sub tokenwrapper {
8675: my $uri=shift;
8676: $uri=~s|^https?\://([^/]+)||;
8677: $uri=~s|^/||;
8678: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8679: my $token=$1;
8680: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8681: if ($udom && $uname && $file) {
8682: $file=~s|(\?\.*)*$||;
8683: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8684: my $homeserver = &homeserver($uname,$udom);
8685: my $protocol = $protocol{$homeserver};
8686: $protocol = 'http' if ($protocol ne 'https');
8687: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
8688: (($uri=~/\?/)?'&':'?').'token='.$token.
8689: '&tokenissued='.$perlvar{'lonHostID'};
8690: } else {
8691: return '/adm/notfound.html';
8692: }
8693: }
8694:
8695: # call with reqtype HEAD: get last modification time
8696: # call with reqtype GET: get the file contents
8697: # Do not call this with reqtype GET for large files! It loads everything into memory
8698: #
8699: sub getuploaded {
8700: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8701: $uri=~s/^\///;
8702: my $homeserver = &homeserver($cnum,$cdom);
8703: my $protocol = $protocol{$homeserver};
8704: $protocol = 'http' if ($protocol ne 'https');
8705: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
8706: my $ua=new LWP::UserAgent;
8707: my $request=new HTTP::Request($reqtype,$uri);
8708: my $response=$ua->request($request);
8709: $$rtncode = $response->code;
8710: if (! $response->is_success()) {
8711: return 'failed';
8712: }
8713: if ($reqtype eq 'HEAD') {
8714: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8715: } elsif ($reqtype eq 'GET') {
8716: $$info = $response->content;
8717: }
8718: return 'ok';
8719: }
8720:
8721: sub readfile {
8722: my $file = shift;
8723: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8724: my $fh;
8725: open($fh,"<$file");
8726: my $a='';
8727: while (my $line = <$fh>) { $a .= $line; }
8728: return $a;
8729: }
8730:
8731: sub filelocation {
8732: my ($dir,$file) = @_;
8733: my $location;
8734: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8735:
8736: if ($file =~ m-^/adm/-) {
8737: $file=~s-^/adm/wrapper/-/-;
8738: $file=~s-^/adm/coursedocs/showdoc/-/-;
8739: }
8740:
8741: if ($file=~m:^/~:) { # is a contruction space reference
8742: $location = $file;
8743: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8744: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8745: # is a correct contruction space reference
8746: $location = $file;
8747: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
8748: $location = $file;
8749: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8750: my ($udom,$uname,$filename)=
8751: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8752: my $home=&homeserver($uname,$udom);
8753: my $is_me=0;
8754: my @ids=¤t_machine_ids();
8755: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8756: if ($is_me) {
8757: $location=&propath($udom,$uname).'/userfiles/'.$filename;
8758: } else {
8759: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8760: $udom.'/'.$uname.'/'.$filename;
8761: }
8762: } elsif ($file =~ m-^/adm/-) {
8763: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8764: } else {
8765: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8766: $file=~s:^/res/:/:;
8767: if ( !( $file =~ m:^/:) ) {
8768: $location = $dir. '/'.$file;
8769: } else {
8770: $location = '/home/httpd/html/res'.$file;
8771: }
8772: }
8773: $location=~s://+:/:g; # remove duplicate /
8774: while ($location=~m{/\.\./}) {
8775: if ($location =~ m{/[^/]+/\.\./}) {
8776: $location=~ s{/[^/]+/\.\./}{/}g;
8777: } else {
8778: $location=~ s{/\.\./}{/}g;
8779: }
8780: } #remove dir/..
8781: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8782: return $location;
8783: }
8784:
8785: sub hreflocation {
8786: my ($dir,$file)=@_;
8787: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
8788: $file=filelocation($dir,$file);
8789: } elsif ($file=~m-^/adm/-) {
8790: $file=~s-^/adm/wrapper/-/-;
8791: $file=~s-^/adm/coursedocs/showdoc/-/-;
8792: }
8793: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8794: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8795: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8796: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8797: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8798: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8799: -/uploaded/$1/$2/-x;
8800: }
8801: if ($file=~ m{^/userfiles/}) {
8802: $file =~ s{^/userfiles/}{/uploaded/};
8803: }
8804: return $file;
8805: }
8806:
8807: sub current_machine_domains {
8808: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8809: }
8810:
8811: sub machine_domains {
8812: my ($hostname) = @_;
8813: my @domains;
8814: my %hostname = &all_hostnames();
8815: while( my($id, $name) = each(%hostname)) {
8816: # &logthis("-$id-$name-$hostname-");
8817: if ($hostname eq $name) {
8818: push(@domains,&host_domain($id));
8819: }
8820: }
8821: return @domains;
8822: }
8823:
8824: sub current_machine_ids {
8825: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8826: }
8827:
8828: sub machine_ids {
8829: my ($hostname) = @_;
8830: $hostname ||= &hostname($perlvar{'lonHostID'});
8831: my @ids;
8832: my %name_to_host = &all_names();
8833: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8834: return @{ $name_to_host{$hostname} };
8835: }
8836: return;
8837: }
8838:
8839: sub additional_machine_domains {
8840: my @domains;
8841: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8842: while( my $line = <$fh>) {
8843: $line =~ s/\s//g;
8844: push(@domains,$line);
8845: }
8846: return @domains;
8847: }
8848:
8849: sub default_login_domain {
8850: my $domain = $perlvar{'lonDefDomain'};
8851: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8852: foreach my $posdom (¤t_machine_domains(),
8853: &additional_machine_domains()) {
8854: if (lc($posdom) eq lc($testdomain)) {
8855: $domain=$posdom;
8856: last;
8857: }
8858: }
8859: return $domain;
8860: }
8861:
8862: # ------------------------------------------------------------- Declutters URLs
8863:
8864: sub declutter {
8865: my $thisfn=shift;
8866: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8867: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8868: $thisfn=~s/^\///;
8869: $thisfn=~s|^adm/wrapper/||;
8870: $thisfn=~s|^adm/coursedocs/showdoc/||;
8871: $thisfn=~s/^res\///;
8872: $thisfn=~s/\?.+$//;
8873: return $thisfn;
8874: }
8875:
8876: # ------------------------------------------------------------- Clutter up URLs
8877:
8878: sub clutter {
8879: my $thisfn='/'.&declutter(shift);
8880: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8881: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8882: $thisfn='/res'.$thisfn;
8883: }
8884: if ($thisfn !~m|/adm|) {
8885: if ($thisfn =~ m|/ext/|) {
8886: $thisfn='/adm/wrapper'.$thisfn;
8887: } else {
8888: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8889: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8890: if ($embstyle eq 'ssi'
8891: || ($embstyle eq 'hdn')
8892: || ($embstyle eq 'rat')
8893: || ($embstyle eq 'prv')
8894: || ($embstyle eq 'ign')) {
8895: #do nothing with these
8896: } elsif (($embstyle eq 'img')
8897: || ($embstyle eq 'emb')
8898: || ($embstyle eq 'wrp')) {
8899: $thisfn='/adm/wrapper'.$thisfn;
8900: } elsif ($embstyle eq 'unk'
8901: && $thisfn!~/\.(sequence|page)$/) {
8902: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8903: } else {
8904: # &logthis("Got a blank emb style");
8905: }
8906: }
8907: }
8908: return $thisfn;
8909: }
8910:
8911: sub clutter_with_no_wrapper {
8912: my $uri = &clutter(shift);
8913: if ($uri =~ m-^/adm/-) {
8914: $uri =~ s-^/adm/wrapper/-/-;
8915: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8916: }
8917: return $uri;
8918: }
8919:
8920: sub freeze_escape {
8921: my ($value)=@_;
8922: if (ref($value)) {
8923: $value=&nfreeze($value);
8924: return '__FROZEN__'.&escape($value);
8925: }
8926: return &escape($value);
8927: }
8928:
8929:
8930: sub thaw_unescape {
8931: my ($value)=@_;
8932: if ($value =~ /^__FROZEN__/) {
8933: substr($value,0,10,undef);
8934: $value=&unescape($value);
8935: return &thaw($value);
8936: }
8937: return &unescape($value);
8938: }
8939:
8940: sub correct_line_ends {
8941: my ($result)=@_;
8942: $$result =~s/\r\n/\n/mg;
8943: $$result =~s/\r/\n/mg;
8944: }
8945: # ================================================================ Main Program
8946:
8947: sub goodbye {
8948: &logthis("Starting Shut down");
8949: #not converted to using infrastruture and probably shouldn't be
8950: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8951: #converted
8952: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8953: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8954: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8955: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8956: #1.1 only
8957: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8958: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8959: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8960: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8961: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8962: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8963: &logthis(sprintf("%-20s is %s",'hits',$hits));
8964: &flushcourselogs();
8965: &logthis("Shutting down");
8966: }
8967:
8968: sub get_dns {
8969: my ($url,$func,$ignore_cache) = @_;
8970: if (!$ignore_cache) {
8971: my ($content,$cached)=
8972: &Apache::lonnet::is_cached_new('dns',$url);
8973: if ($cached) {
8974: &$func($content);
8975: return;
8976: }
8977: }
8978:
8979: my %alldns;
8980: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8981: foreach my $dns (<$config>) {
8982: next if ($dns !~ /^\^(\S*)/x);
8983: my $line = $1;
8984: my ($host,$protocol) = split(/:/,$line);
8985: if ($protocol ne 'https') {
8986: $protocol = 'http';
8987: }
8988: $alldns{$host} = $protocol;
8989: }
8990: while (%alldns) {
8991: my ($dns) = keys(%alldns);
8992: my $ua=new LWP::UserAgent;
8993: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
8994: my $response=$ua->request($request);
8995: delete($alldns{$dns});
8996: next if ($response->is_error());
8997: my @content = split("\n",$response->content);
8998: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8999: &$func(\@content);
9000: return;
9001: }
9002: close($config);
9003: my $which = (split('/',$url))[3];
9004: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
9005: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
9006: my @content = <$config>;
9007: &$func(\@content);
9008: return;
9009: }
9010: # ------------------------------------------------------------ Read domain file
9011: {
9012: my $loaded;
9013: my %domain;
9014:
9015: sub parse_domain_tab {
9016: my ($lines) = @_;
9017: foreach my $line (@$lines) {
9018: next if ($line =~ /^(\#|\s*$ )/x);
9019:
9020: chomp($line);
9021: my ($name,@elements) = split(/:/,$line,9);
9022: my %this_domain;
9023: foreach my $field ('description', 'auth_def', 'auth_arg_def',
9024: 'lang_def', 'city', 'longi', 'lati',
9025: 'primary') {
9026: $this_domain{$field} = shift(@elements);
9027: }
9028: $domain{$name} = \%this_domain;
9029: }
9030: }
9031:
9032: sub reset_domain_info {
9033: undef($loaded);
9034: undef(%domain);
9035: }
9036:
9037: sub load_domain_tab {
9038: my ($ignore_cache) = @_;
9039: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
9040: my $fh;
9041: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
9042: my @lines = <$fh>;
9043: &parse_domain_tab(\@lines);
9044: }
9045: close($fh);
9046: $loaded = 1;
9047: }
9048:
9049: sub domain {
9050: &load_domain_tab() if (!$loaded);
9051:
9052: my ($name,$what) = @_;
9053: return if ( !exists($domain{$name}) );
9054:
9055: if (!$what) {
9056: return $domain{$name}{'description'};
9057: }
9058: return $domain{$name}{$what};
9059: }
9060:
9061: sub domain_info {
9062: &load_domain_tab() if (!$loaded);
9063: return %domain;
9064: }
9065:
9066: }
9067:
9068:
9069: # ------------------------------------------------------------- Read hosts file
9070: {
9071: my %hostname;
9072: my %hostdom;
9073: my %libserv;
9074: my $loaded;
9075: my %name_to_host;
9076:
9077: sub parse_hosts_tab {
9078: my ($file) = @_;
9079: foreach my $configline (@$file) {
9080: next if ($configline =~ /^(\#|\s*$ )/x);
9081: next if ($configline =~ /^\^/);
9082: chomp($configline);
9083: my ($id,$domain,$role,$name,$protocol)=split(/:/,$configline);
9084: $name=~s/\s//g;
9085: if ($id && $domain && $role && $name) {
9086: $hostname{$id}=$name;
9087: push(@{$name_to_host{$name}}, $id);
9088: $hostdom{$id}=$domain;
9089: if ($role eq 'library') { $libserv{$id}=$name; }
9090: if (defined($protocol)) {
9091: if ($protocol eq 'https') {
9092: $protocol{$id} = $protocol;
9093: } else {
9094: $protocol{$id} = 'http';
9095: }
9096: } else {
9097: $protocol{$id} = 'http';
9098: }
9099: }
9100: }
9101: }
9102:
9103: sub reset_hosts_info {
9104: &purge_remembered();
9105: &reset_domain_info();
9106: &reset_hosts_ip_info();
9107: undef(%name_to_host);
9108: undef(%hostname);
9109: undef(%hostdom);
9110: undef(%libserv);
9111: undef($loaded);
9112: }
9113:
9114: sub load_hosts_tab {
9115: my ($ignore_cache) = @_;
9116: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
9117: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9118: my @config = <$config>;
9119: &parse_hosts_tab(\@config);
9120: close($config);
9121: $loaded=1;
9122: }
9123:
9124: sub hostname {
9125: &load_hosts_tab() if (!$loaded);
9126:
9127: my ($lonid) = @_;
9128: return $hostname{$lonid};
9129: }
9130:
9131: sub all_hostnames {
9132: &load_hosts_tab() if (!$loaded);
9133:
9134: return %hostname;
9135: }
9136:
9137: sub all_names {
9138: &load_hosts_tab() if (!$loaded);
9139:
9140: return %name_to_host;
9141: }
9142:
9143: sub all_host_domain {
9144: &load_hosts_tab() if (!$loaded);
9145: return %hostdom;
9146: }
9147:
9148: sub is_library {
9149: &load_hosts_tab() if (!$loaded);
9150:
9151: return exists($libserv{$_[0]});
9152: }
9153:
9154: sub all_library {
9155: &load_hosts_tab() if (!$loaded);
9156:
9157: return %libserv;
9158: }
9159:
9160: sub get_servers {
9161: &load_hosts_tab() if (!$loaded);
9162:
9163: my ($domain,$type) = @_;
9164: my %possible_hosts = ($type eq 'library') ? %libserv
9165: : %hostname;
9166: my %result;
9167: if (ref($domain) eq 'ARRAY') {
9168: while ( my ($host,$hostname) = each(%possible_hosts)) {
9169: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
9170: $result{$host} = $hostname;
9171: }
9172: }
9173: } else {
9174: while ( my ($host,$hostname) = each(%possible_hosts)) {
9175: if ($hostdom{$host} eq $domain) {
9176: $result{$host} = $hostname;
9177: }
9178: }
9179: }
9180: return %result;
9181: }
9182:
9183: sub host_domain {
9184: &load_hosts_tab() if (!$loaded);
9185:
9186: my ($lonid) = @_;
9187: return $hostdom{$lonid};
9188: }
9189:
9190: sub all_domains {
9191: &load_hosts_tab() if (!$loaded);
9192:
9193: my %seen;
9194: my @uniq = grep(!$seen{$_}++, values(%hostdom));
9195: return @uniq;
9196: }
9197: }
9198:
9199: {
9200: my %iphost;
9201: my %name_to_ip;
9202: my %lonid_to_ip;
9203:
9204: sub get_hosts_from_ip {
9205: my ($ip) = @_;
9206: my %iphosts = &get_iphost();
9207: if (ref($iphosts{$ip})) {
9208: return @{$iphosts{$ip}};
9209: }
9210: return;
9211: }
9212:
9213: sub reset_hosts_ip_info {
9214: undef(%iphost);
9215: undef(%name_to_ip);
9216: undef(%lonid_to_ip);
9217: }
9218:
9219: sub get_host_ip {
9220: my ($lonid) = @_;
9221: if (exists($lonid_to_ip{$lonid})) {
9222: return $lonid_to_ip{$lonid};
9223: }
9224: my $name=&hostname($lonid);
9225: my $ip = gethostbyname($name);
9226: return if (!$ip || length($ip) ne 4);
9227: $ip=inet_ntoa($ip);
9228: $name_to_ip{$name} = $ip;
9229: $lonid_to_ip{$lonid} = $ip;
9230: return $ip;
9231: }
9232:
9233: sub get_iphost {
9234: my ($ignore_cache) = @_;
9235:
9236: if (!$ignore_cache) {
9237: if (%iphost) {
9238: return %iphost;
9239: }
9240: my ($ip_info,$cached)=
9241: &Apache::lonnet::is_cached_new('iphost','iphost');
9242: if ($cached) {
9243: %iphost = %{$ip_info->[0]};
9244: %name_to_ip = %{$ip_info->[1]};
9245: %lonid_to_ip = %{$ip_info->[2]};
9246: return %iphost;
9247: }
9248: }
9249:
9250: # get yesterday's info for fallback
9251: my %old_name_to_ip;
9252: my ($ip_info,$cached)=
9253: &Apache::lonnet::is_cached_new('iphost','iphost');
9254: if ($cached) {
9255: %old_name_to_ip = %{$ip_info->[1]};
9256: }
9257:
9258: my %name_to_host = &all_names();
9259: foreach my $name (keys(%name_to_host)) {
9260: my $ip;
9261: if (!exists($name_to_ip{$name})) {
9262: $ip = gethostbyname($name);
9263: if (!$ip || length($ip) ne 4) {
9264: if (defined($old_name_to_ip{$name})) {
9265: $ip = $old_name_to_ip{$name};
9266: &logthis("Can't find $name defaulting to old $ip");
9267: } else {
9268: &logthis("Name $name no IP found");
9269: next;
9270: }
9271: } else {
9272: $ip=inet_ntoa($ip);
9273: }
9274: $name_to_ip{$name} = $ip;
9275: } else {
9276: $ip = $name_to_ip{$name};
9277: }
9278: foreach my $id (@{ $name_to_host{$name} }) {
9279: $lonid_to_ip{$id} = $ip;
9280: }
9281: push(@{$iphost{$ip}},@{$name_to_host{$name}});
9282: }
9283: &Apache::lonnet::do_cache_new('iphost','iphost',
9284: [\%iphost,\%name_to_ip,\%lonid_to_ip],
9285: 48*60*60);
9286:
9287: return %iphost;
9288: }
9289:
9290: #
9291: # Given a DNS returns the loncapa host name for that DNS
9292: #
9293: sub host_from_dns {
9294: my ($dns) = @_;
9295: my @hosts;
9296: my $ip;
9297:
9298: if (exists($name_to_ip{$dns})) {
9299: $ip = $name_to_ip{$dns};
9300: }
9301: if (!$ip) {
9302: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
9303: if (length($ip) == 4) {
9304: $ip = &IO::Socket::inet_ntoa($ip);
9305: }
9306: }
9307: if ($ip) {
9308: @hosts = get_hosts_from_ip($ip);
9309: return $hosts[0];
9310: }
9311: return undef;
9312: }
9313:
9314: }
9315:
9316: BEGIN {
9317:
9318: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
9319: unless ($readit) {
9320: {
9321: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
9322: %perlvar = (%perlvar,%{$configvars});
9323: }
9324:
9325:
9326: # ------------------------------------------------------ Read spare server file
9327: {
9328: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
9329:
9330: while (my $configline=<$config>) {
9331: chomp($configline);
9332: if ($configline) {
9333: my ($host,$type) = split(':',$configline,2);
9334: if (!defined($type) || $type eq '') { $type = 'default' };
9335: push(@{ $spareid{$type} }, $host);
9336: }
9337: }
9338: close($config);
9339: }
9340: # ------------------------------------------------------------ Read permissions
9341: {
9342: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
9343:
9344: while (my $configline=<$config>) {
9345: chomp($configline);
9346: if ($configline) {
9347: my ($role,$perm)=split(/ /,$configline);
9348: if ($perm ne '') { $pr{$role}=$perm; }
9349: }
9350: }
9351: close($config);
9352: }
9353:
9354: # -------------------------------------------- Read plain texts for permissions
9355: {
9356: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
9357:
9358: while (my $configline=<$config>) {
9359: chomp($configline);
9360: if ($configline) {
9361: my ($short,@plain)=split(/:/,$configline);
9362: %{$prp{$short}} = ();
9363: if (@plain > 0) {
9364: $prp{$short}{'std'} = $plain[0];
9365: for (my $i=1; $i<@plain; $i++) {
9366: $prp{$short}{'alt'.$i} = $plain[$i];
9367: }
9368: }
9369: }
9370: }
9371: close($config);
9372: }
9373:
9374: # ---------------------------------------------------------- Read package table
9375: {
9376: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
9377:
9378: while (my $configline=<$config>) {
9379: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
9380: chomp($configline);
9381: my ($short,$plain)=split(/:/,$configline);
9382: my ($pack,$name)=split(/\&/,$short);
9383: if ($plain ne '') {
9384: $packagetab{$pack.'&'.$name.'&name'}=$name;
9385: $packagetab{$short}=$plain;
9386: }
9387: }
9388: close($config);
9389: }
9390:
9391: # ------------- set up temporary directory
9392: {
9393: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
9394:
9395: }
9396:
9397: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
9398: 'compress_threshold'=> 20_000,
9399: });
9400:
9401: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
9402: $dumpcount=0;
9403: $locknum=0;
9404:
9405: &logtouch();
9406: &logthis('<font color="yellow">INFO: Read configuration</font>');
9407: $readit=1;
9408: {
9409: use integer;
9410: my $test=(2**32)+1;
9411: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
9412: &logthis(" Detected 64bit platform ($_64bit)");
9413: }
9414: }
9415: }
9416:
9417: 1;
9418: __END__
9419:
9420: =pod
9421:
9422: =head1 NAME
9423:
9424: Apache::lonnet - Subroutines to ask questions about things in the network.
9425:
9426: =head1 SYNOPSIS
9427:
9428: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
9429:
9430: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
9431:
9432: Common parameters:
9433:
9434: =over 4
9435:
9436: =item *
9437:
9438: $uname : an internal username (if $cname expecting a course Id specifically)
9439:
9440: =item *
9441:
9442: $udom : a domain (if $cdom expecting a course's domain specifically)
9443:
9444: =item *
9445:
9446: $symb : a resource instance identifier
9447:
9448: =item *
9449:
9450: $namespace : the name of a .db file that contains the data needed or
9451: being set.
9452:
9453: =back
9454:
9455: =head1 OVERVIEW
9456:
9457: lonnet provides subroutines which interact with the
9458: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
9459: about classes, users, and resources.
9460:
9461: For many of these objects you can also use this to store data about
9462: them or modify them in various ways.
9463:
9464: =head2 Symbs
9465:
9466: To identify a specific instance of a resource, LON-CAPA uses symbols
9467: or "symbs"X<symb>. These identifiers are built from the URL of the
9468: map, the resource number of the resource in the map, and the URL of
9469: the resource itself. The latter is somewhat redundant, but might help
9470: if maps change.
9471:
9472: An example is
9473:
9474: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
9475:
9476: The respective map entry is
9477:
9478: <resource id="19" src="/res/msu/korte/tests/part12.problem"
9479: title="Problem 2">
9480: </resource>
9481:
9482: Symbs are used by the random number generator, as well as to store and
9483: restore data specific to a certain instance of for example a problem.
9484:
9485: =head2 Storing And Retrieving Data
9486:
9487: X<store()>X<cstore()>X<restore()>Three of the most important functions
9488: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
9489: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
9490: is is the non-critical message twin of cstore. These functions are for
9491: handlers to store a perl hash to a user's permanent data space in an
9492: easy manner, and to retrieve it again on another call. It is expected
9493: that a handler would use this once at the beginning to retrieve data,
9494: and then again once at the end to send only the new data back.
9495:
9496: The data is stored in the user's data directory on the user's
9497: homeserver under the ID of the course.
9498:
9499: The hash that is returned by restore will have all of the previous
9500: value for all of the elements of the hash.
9501:
9502: Example:
9503:
9504: #creating a hash
9505: my %hash;
9506: $hash{'foo'}='bar';
9507:
9508: #storing it
9509: &Apache::lonnet::cstore(\%hash);
9510:
9511: #changing a value
9512: $hash{'foo'}='notbar';
9513:
9514: #adding a new value
9515: $hash{'bar'}='foo';
9516: &Apache::lonnet::cstore(\%hash);
9517:
9518: #retrieving the hash
9519: my %history=&Apache::lonnet::restore();
9520:
9521: #print the hash
9522: foreach my $key (sort(keys(%history))) {
9523: print("\%history{$key} = $history{$key}");
9524: }
9525:
9526: Will print out:
9527:
9528: %history{1:foo} = bar
9529: %history{1:keys} = foo:timestamp
9530: %history{1:timestamp} = 990455579
9531: %history{2:bar} = foo
9532: %history{2:foo} = notbar
9533: %history{2:keys} = foo:bar:timestamp
9534: %history{2:timestamp} = 990455580
9535: %history{bar} = foo
9536: %history{foo} = notbar
9537: %history{timestamp} = 990455580
9538: %history{version} = 2
9539:
9540: Note that the special hash entries C<keys>, C<version> and
9541: C<timestamp> were added to the hash. C<version> will be equal to the
9542: total number of versions of the data that have been stored. The
9543: C<timestamp> attribute will be the UNIX time the hash was
9544: stored. C<keys> is available in every historical section to list which
9545: keys were added or changed at a specific historical revision of a
9546: hash.
9547:
9548: B<Warning>: do not store the hash that restore returns directly. This
9549: will cause a mess since it will restore the historical keys as if the
9550: were new keys. I.E. 1:foo will become 1:1:foo etc.
9551:
9552: Calling convention:
9553:
9554: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
9555: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
9556:
9557: For more detailed information, see lonnet specific documentation.
9558:
9559: =head1 RETURN MESSAGES
9560:
9561: =over 4
9562:
9563: =item * B<con_lost>: unable to contact remote host
9564:
9565: =item * B<con_delayed>: unable to contact remote host, message will be delivered
9566: when the connection is brought back up
9567:
9568: =item * B<con_failed>: unable to contact remote host and unable to save message
9569: for later delivery
9570:
9571: =item * B<error:>: an error a occurred, a description of the error follows the :
9572:
9573: =item * B<no_such_host>: unable to fund a host associated with the user/domain
9574: that was requested
9575:
9576: =back
9577:
9578: =head1 PUBLIC SUBROUTINES
9579:
9580: =head2 Session Environment Functions
9581:
9582: =over 4
9583:
9584: =item *
9585: X<appenv()>
9586: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
9587: the user envirnoment file, and will be restored for each access this
9588: user makes during this session, also modifies the %env for the current
9589: process. Optional rolesarrayref - if defined contains a reference to an array
9590: of roles which are exempt from the restriction on modifying user.role entries
9591: in the user's environment.db and in %env.
9592:
9593: =item *
9594: X<delenv()>
9595: B<delenv($delthis,$regexp)>: removes all items from the session
9596: environment file that begin with $delthis. If the
9597: optional second arg - $regexp - is true, $delthis is treated as a
9598: regular expression, otherwise \Q$delthis\E is used.
9599: The values are also deleted from the current processes %env.
9600:
9601: =item * get_env_multiple($name)
9602:
9603: gets $name from the %env hash, it seemlessly handles the cases where multiple
9604: values may be defined and end up as an array ref.
9605:
9606: returns an array of values
9607:
9608: =back
9609:
9610: =head2 User Information
9611:
9612: =over 4
9613:
9614: =item *
9615: X<queryauthenticate()>
9616: B<queryauthenticate($uname,$udom)>: try to determine user's current
9617: authentication scheme
9618:
9619: =item *
9620: X<authenticate()>
9621: B<authenticate($uname,$upass,$udom)>: try to
9622: authenticate user from domain's lib servers (first use the current
9623: one). C<$upass> should be the users password.
9624:
9625: =item *
9626: X<homeserver()>
9627: B<homeserver($uname,$udom)>: find the server which has
9628: the user's directory and files (there must be only one), this caches
9629: the answer, and also caches if there is a borken connection.
9630:
9631: =item *
9632: X<idget()>
9633: B<idget($udom,@ids)>: find the usernames behind a list of IDs
9634: (IDs are a unique resource in a domain, there must be only 1 ID per
9635: username, and only 1 username per ID in a specific domain) (returns
9636: hash: id=>name,id=>name)
9637:
9638: =item *
9639: X<idrget()>
9640: B<idrget($udom,@unames)>: find the IDs behind a list of
9641: usernames (returns hash: name=>id,name=>id)
9642:
9643: =item *
9644: X<idput()>
9645: B<idput($udom,%ids)>: store away a list of names and associated IDs
9646:
9647: =item *
9648: X<rolesinit()>
9649: B<rolesinit($udom,$username,$authhost)>: get user privileges
9650:
9651: =item *
9652: X<getsection()>
9653: B<getsection($udom,$uname,$cname)>: finds the section of student in the
9654: course $cname, return section name/number or '' for "not in course"
9655: and '-1' for "no section"
9656:
9657: =item *
9658: X<userenvironment()>
9659: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
9660: passed in @what from the requested user's environment, returns a hash
9661:
9662: =item *
9663: X<userlog_query()>
9664: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
9665: activity.log file. %filters defines filters applied when parsing the
9666: log file. These can be start or end timestamps, or the type of action
9667: - log to look for Login or Logout events, check for Checkin or
9668: Checkout, role for role selection. The response is in the form
9669: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
9670: escaped strings of the action recorded in the activity.log file.
9671:
9672: =back
9673:
9674: =head2 User Roles
9675:
9676: =over 4
9677:
9678: =item *
9679:
9680: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
9681: F: full access
9682: U,I,K: authentication modes (cxx only)
9683: '': forbidden
9684: 1: user needs to choose course
9685: 2: browse allowed
9686: A: passphrase authentication needed
9687:
9688: =item *
9689:
9690: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
9691: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
9692: and course level
9693:
9694: =item *
9695:
9696: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
9697: (rolesplain.tab); plain text explanation of a user role term.
9698: $type is Course (default) or Community.
9699: If $forcedefault evaluates to true, text returned will be default
9700: text for $type. Otherwise, if this is a course, the text returned
9701: will be a custom name for the role (if defined in the course's
9702: environment). If no custom name is defined the default is returned.
9703:
9704: =item *
9705:
9706: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
9707: All arguments are optional. Returns a hash of a roles, either for
9708: co-author/assistant author roles for a user's Construction Space
9709: (default), or if $context is 'userroles', roles for the user himself,
9710: In the hash, keys are set to colon-separated $uname,$udom,$role, and
9711: (optionally) if $withsec is true, a fourth colon-separated item - $section.
9712: For each key, value is set to colon-separated start and end times for
9713: the role. If no username and domain are specified, will default to
9714: current user/domain. Types, roles, and roledoms are references to arrays
9715: of role statuses (active, future or previous), roles
9716: (e.g., cc,in, st etc.) and domains of the roles which can be used
9717: to restrict the list of roles reported. If no array ref is
9718: provided for types, will default to return only active roles.
9719:
9720: =back
9721:
9722: =head2 User Modification
9723:
9724: =over 4
9725:
9726: =item *
9727:
9728: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
9729: user for the level given by URL. Optional start and end dates (leave empty
9730: string or zero for "no date")
9731:
9732: =item *
9733:
9734: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9735: change a users, password, possible return values are: ok,
9736: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9737: refused
9738:
9739: =item *
9740:
9741: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9742:
9743: =item *
9744:
9745: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,
9746: $forceid,$desiredhome,$email,$inststatus) :
9747: modify user
9748:
9749: =item *
9750:
9751: modifystudent
9752:
9753: modify a student's enrollment and identification information.
9754: The course id is resolved based on the current users environment.
9755: This means the envoking user must be a course coordinator or otherwise
9756: associated with a course.
9757:
9758: This call is essentially a wrapper for lonnet::modifyuser and
9759: lonnet::modify_student_enrollment
9760:
9761: Inputs:
9762:
9763: =over 4
9764:
9765: =item B<$udom> Student's loncapa domain
9766:
9767: =item B<$uname> Student's loncapa login name
9768:
9769: =item B<$uid> Student/Employee ID
9770:
9771: =item B<$umode> Student's authentication mode
9772:
9773: =item B<$upass> Student's password
9774:
9775: =item B<$first> Student's first name
9776:
9777: =item B<$middle> Student's middle name
9778:
9779: =item B<$last> Student's last name
9780:
9781: =item B<$gene> Student's generation
9782:
9783: =item B<$usec> Student's section in course
9784:
9785: =item B<$end> Unix time of the roles expiration
9786:
9787: =item B<$start> Unix time of the roles start date
9788:
9789: =item B<$forceid> If defined, allow $uid to be changed
9790:
9791: =item B<$desiredhome> server to use as home server for student
9792:
9793: =item B<$email> Student's permanent e-mail address
9794:
9795: =item B<$type> Type of enrollment (auto or manual)
9796:
9797: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
9798:
9799: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
9800:
9801: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
9802:
9803: =item B<$context> role change context (shown in User Management Logs display in a course)
9804:
9805: =item B<$inststatus> institutional status of user - : separated string of escaped status types
9806:
9807: =back
9808:
9809: =item *
9810:
9811: modify_student_enrollment
9812:
9813: Change a students enrollment status in a class. The environment variable
9814: 'role.request.course' must be defined for this function to proceed.
9815:
9816: Inputs:
9817:
9818: =over 4
9819:
9820: =item $udom, students domain
9821:
9822: =item $uname, students name
9823:
9824: =item $uid, students user id
9825:
9826: =item $first, students first name
9827:
9828: =item $middle
9829:
9830: =item $last
9831:
9832: =item $gene
9833:
9834: =item $usec
9835:
9836: =item $end
9837:
9838: =item $start
9839:
9840: =item $type
9841:
9842: =item $locktype
9843:
9844: =item $cid
9845:
9846: =item $selfenroll
9847:
9848: =item $context
9849:
9850: =back
9851:
9852:
9853: =item *
9854:
9855: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9856: custom role; give a custom role to a user for the level given by URL. Specify
9857: name and domain of role author, and role name
9858:
9859: =item *
9860:
9861: revokerole($udom,$uname,$url,$role) : revoke a role for url
9862:
9863: =item *
9864:
9865: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9866:
9867: =back
9868:
9869: =head2 Course Infomation
9870:
9871: =over 4
9872:
9873: =item *
9874:
9875: coursedescription($courseid) : returns a hash of information about the
9876: specified course id, including all environment settings for the
9877: course, the description of the course will be in the hash under the
9878: key 'description'
9879:
9880: =item *
9881:
9882: resdata($name,$domain,$type,@which) : request for current parameter
9883: setting for a specific $type, where $type is either 'course' or 'user',
9884: @what should be a list of parameters to ask about. This routine caches
9885: answers for 5 minutes.
9886:
9887: =item *
9888:
9889: get_courseresdata($courseid, $domain) : dump the entire course resource
9890: data base, returning a hash that is keyed by the resource name and has
9891: values that are the resource value. I believe that the timestamps and
9892: versions are also returned.
9893:
9894:
9895: =back
9896:
9897: =head2 Course Modification
9898:
9899: =over 4
9900:
9901: =item *
9902:
9903: writecoursepref($courseid,%prefs) : write preferences (environment
9904: database) for a course
9905:
9906: =item *
9907:
9908: createcourse($udom,$description,$url) : make/modify course
9909:
9910: =back
9911:
9912: =head2 Resource Subroutines
9913:
9914: =over 4
9915:
9916: =item *
9917:
9918: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9919:
9920: =item *
9921:
9922: repcopy($filename) : subscribes to the requested file, and attempts to
9923: replicate from the owning library server, Might return
9924: 'unavailable', 'not_found', 'forbidden', 'ok', or
9925: 'bad_request', also attempts to grab the metadata for the
9926: resource. Expects the local filesystem pathname
9927: (/home/httpd/html/res/....)
9928:
9929: =back
9930:
9931: =head2 Resource Information
9932:
9933: =over 4
9934:
9935: =item *
9936:
9937: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9938: a vairety of different possible values, $varname should be a request
9939: string, and the other parameters can be used to specify who and what
9940: one is asking about.
9941:
9942: Possible values for $varname are environment.lastname (or other item
9943: from the envirnment hash), user.name (or someother aspect about the
9944: user), resource.0.maxtries (or some other part and parameter of a
9945: resource)
9946:
9947: =item *
9948:
9949: directcondval($number) : get current value of a condition; reads from a state
9950: string
9951:
9952: =item *
9953:
9954: condval($condidx) : value of condition index based on state
9955:
9956: =item *
9957:
9958: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9959: resource's metadata, $what should be either a specific key, or either
9960: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9961: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9962:
9963: this function automatically caches all requests
9964:
9965: =item *
9966:
9967: metadata_query($query,$custom,$customshow) : make a metadata query against the
9968: network of library servers; returns file handle of where SQL and regex results
9969: will be stored for query
9970:
9971: =item *
9972:
9973: symbread($filename) : return symbolic list entry (filename argument optional);
9974: returns the data handle
9975:
9976: =item *
9977:
9978: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9979: a possible symb for the URL in $thisfn, and if is an encryypted
9980: resource that the user accessed using /enc/ returns a 1 on success, 0
9981: on failure, user must be in a course, as it assumes the existance of
9982: the course initial hash, and uses $env('request.course.id'}
9983:
9984:
9985: =item *
9986:
9987: symbclean($symb) : removes versions numbers from a symb, returns the
9988: cleaned symb
9989:
9990: =item *
9991:
9992: is_on_map($uri) : checks if the $uri is somewhere on the current
9993: course map, user must be in a course for it to work.
9994:
9995: =item *
9996:
9997: numval($salt) : return random seed value (addend for rndseed)
9998:
9999: =item *
10000:
10001: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
10002: a random seed, all arguments are optional, if they aren't sent it uses the
10003: environment to derive them. Note: if symb isn't sent and it can't get one
10004: from &symbread it will use the current time as its return value
10005:
10006: =item *
10007:
10008: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
10009: unfakeable, receipt
10010:
10011: =item *
10012:
10013: receipt() : API to ireceipt working off of env values; given out to users
10014:
10015: =item *
10016:
10017: countacc($url) : count the number of accesses to a given URL
10018:
10019: =item *
10020:
10021: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
10022:
10023: =item *
10024:
10025: checkin($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 $tcrsid)
10026:
10027: =item *
10028:
10029: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
10030:
10031: =item *
10032:
10033: devalidate($symb) : devalidate temporary spreadsheet calculations,
10034: forcing spreadsheet to reevaluate the resource scores next time.
10035:
10036: =back
10037:
10038: =head2 Storing/Retreiving Data
10039:
10040: =over 4
10041:
10042: =item *
10043:
10044: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
10045: for this url; hashref needs to be given and should be a \%hashname; the
10046: remaining args aren't required and if they aren't passed or are '' they will
10047: be derived from the env
10048:
10049: =item *
10050:
10051: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
10052: uses critical subroutine
10053:
10054: =item *
10055:
10056: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
10057: all args are optional
10058:
10059: =item *
10060:
10061: dumpstore($namespace,$udom,$uname,$regexp,$range) :
10062: dumps the complete (or key matching regexp) namespace into a hash
10063: ($udom, $uname, $regexp, $range are optional) for a namespace that is
10064: normally &store()ed into
10065:
10066: $range should be either an integer '100' (give me the first 100
10067: matching records)
10068: or be two integers sperated by a - with no spaces
10069: '30-50' (give me the 30th through the 50th matching
10070: records)
10071:
10072:
10073: =item *
10074:
10075: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
10076: replaces a &store() version of data with a replacement set of data
10077: for a particular resource in a namespace passed in the $storehash hash
10078: reference
10079:
10080: =item *
10081:
10082: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
10083: works very similar to store/cstore, but all data is stored in a
10084: temporary location and can be reset using tmpreset, $storehash should
10085: be a hash reference, returns nothing on success
10086:
10087: =item *
10088:
10089: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
10090: similar to restore, but all data is stored in a temporary location and
10091: can be reset using tmpreset. Returns a hash of values on success,
10092: error string otherwise.
10093:
10094: =item *
10095:
10096: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
10097: deltes all keys for $symb form the temporary storage hash.
10098:
10099: =item *
10100:
10101: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
10102: reference filled in from namesp ($udom and $uname are optional)
10103:
10104: =item *
10105:
10106: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
10107: namesp ($udom and $uname are optional)
10108:
10109: =item *
10110:
10111: dump($namespace,$udom,$uname,$regexp,$range) :
10112: dumps the complete (or key matching regexp) namespace into a hash
10113: ($udom, $uname, $regexp, $range are optional)
10114:
10115: $range should be either an integer '100' (give me the first 100
10116: matching records)
10117: or be two integers sperated by a - with no spaces
10118: '30-50' (give me the 30th through the 50th matching
10119: records)
10120: =item *
10121:
10122: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
10123: $store can be a scalar, an array reference, or if the amount to be
10124: incremented is > 1, a hash reference.
10125:
10126: ($udom and $uname are optional)
10127:
10128: =item *
10129:
10130: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
10131: ($udom and $uname are optional)
10132:
10133: =item *
10134:
10135: cput($namespace,$storehash,$udom,$uname) : critical put
10136: ($udom and $uname are optional)
10137:
10138: =item *
10139:
10140: newput($namespace,$storehash,$udom,$uname) :
10141:
10142: Attempts to store the items in the $storehash, but only if they don't
10143: currently exist, if this succeeds you can be certain that you have
10144: successfully created a new key value pair in the $namespace db.
10145:
10146:
10147: Args:
10148: $namespace: name of database to store values to
10149: $storehash: hashref to store to the db
10150: $udom: (optional) domain of user containing the db
10151: $uname: (optional) name of user caontaining the db
10152:
10153: Returns:
10154: 'ok' -> succeeded in storing all keys of $storehash
10155: 'key_exists: <key>' -> failed to anything out of $storehash, as at
10156: least <key> already existed in the db (other
10157: requested keys may also already exist)
10158: 'error: <msg>' -> unable to tie the DB or other error occurred
10159: 'con_lost' -> unable to contact request server
10160: 'refused' -> action was not allowed by remote machine
10161:
10162:
10163: =item *
10164:
10165: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
10166: reference filled in from namesp (encrypts the return communication)
10167: ($udom and $uname are optional)
10168:
10169: =item *
10170:
10171: log($udom,$name,$home,$message) : write to permanent log for user; use
10172: critical subroutine
10173:
10174: =item *
10175:
10176: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
10177: array reference filled in from namespace found in domain level on either
10178: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
10179:
10180: =item *
10181:
10182: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
10183: domain level either on specified domain server ($uhome) or primary domain
10184: server ($udom and $uhome are optional)
10185:
10186: =item *
10187:
10188: get_domain_defaults($target_domain) : returns hash with defaults for
10189: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
10190: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
10191: or localauth), initial password or a kerberos realm, language (e.g., en-us).
10192: Values are retrieved from cache (if current), or from domain's configuration.db
10193: (if available), or lastly from values in lonTabs/dns_domain,tab,
10194: or lonTabs/domain.tab.
10195:
10196: %domdefaults = &get_auth_defaults($target_domain);
10197:
10198: =back
10199:
10200: =head2 Network Status Functions
10201:
10202: =over 4
10203:
10204: =item *
10205:
10206: dirlist($uri) : return directory list based on URI
10207:
10208: =item *
10209:
10210: spareserver() : find server with least workload from spare.tab
10211:
10212:
10213: =item *
10214:
10215: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
10216: if there is no corresponding loncapa host.
10217:
10218: =back
10219:
10220:
10221: =head2 Apache Request
10222:
10223: =over 4
10224:
10225: =item *
10226:
10227: ssi($url,%hash) : server side include, does a complete request cycle on url to
10228: localhost, posts hash
10229:
10230: =back
10231:
10232: =head2 Data to String to Data
10233:
10234: =over 4
10235:
10236: =item *
10237:
10238: hash2str(%hash) : convert a hash into a string complete with escaping and '='
10239: and '&' separators, supports elements that are arrayrefs and hashrefs
10240:
10241: =item *
10242:
10243: hashref2str($hashref) : convert a hashref into a string complete with
10244: escaping and '=' and '&' separators, supports elements that are
10245: arrayrefs and hashrefs
10246:
10247: =item *
10248:
10249: arrayref2str($arrayref) : convert an arrayref into a string complete
10250: with escaping and '&' separators, supports elements that are arrayrefs
10251: and hashrefs
10252:
10253: =item *
10254:
10255: str2hash($string) : convert string to hash using unescaping and
10256: splitting on '=' and '&', supports elements that are arrayrefs and
10257: hashrefs
10258:
10259: =item *
10260:
10261: str2array($string) : convert string to hash using unescaping and
10262: splitting on '&', supports elements that are arrayrefs and hashrefs
10263:
10264: =back
10265:
10266: =head2 Logging Routines
10267:
10268: =over 4
10269:
10270: These routines allow one to make log messages in the lonnet.log and
10271: lonnet.perm logfiles.
10272:
10273: =item *
10274:
10275: logtouch() : make sure the logfile, lonnet.log, exists
10276:
10277: =item *
10278:
10279: logthis() : append message to the normal lonnet.log file, it gets
10280: preiodically rolled over and deleted.
10281:
10282: =item *
10283:
10284: logperm() : append a permanent message to lonnet.perm.log, this log
10285: file never gets deleted by any automated portion of the system, only
10286: messages of critical importance should go in here.
10287:
10288: =back
10289:
10290: =head2 General File Helper Routines
10291:
10292: =over 4
10293:
10294: =item *
10295:
10296: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
10297: (a) files in /uploaded
10298: (i) If a local copy of the file exists -
10299: compares modification date of local copy with last-modified date for
10300: definitive version stored on home server for course. If local copy is
10301: stale, requests a new version from the home server and stores it.
10302: If the original has been removed from the home server, then local copy
10303: is unlinked.
10304: (ii) If local copy does not exist -
10305: requests the file from the home server and stores it.
10306:
10307: If $caller is 'uploadrep':
10308: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
10309: for request for files originally uploaded via DOCS.
10310: - returns 'ok' if fresh local copy now available, -1 otherwise.
10311:
10312: Otherwise:
10313: This indicates a call from the content generation phase of the request.
10314: - returns the entire contents of the file or -1.
10315:
10316: (b) files in /res
10317: - returns the entire contents of a file or -1;
10318: it properly subscribes to and replicates the file if neccessary.
10319:
10320:
10321: =item *
10322:
10323: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
10324: reference
10325:
10326: returns either a stat() list of data about the file or an empty list
10327: if the file doesn't exist or couldn't find out about it (connection
10328: problems or user unknown)
10329:
10330: =item *
10331:
10332: filelocation($dir,$file) : returns file system location of a file
10333: based on URI; meant to be "fairly clean" absolute reference, $dir is a
10334: directory that relative $file lookups are to looked in ($dir of /a/dir
10335: and a file of ../bob will become /a/bob)
10336:
10337: =item *
10338:
10339: hreflocation($dir,$file) : returns file system location or a URL; same as
10340: filelocation except for hrefs
10341:
10342: =item *
10343:
10344: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
10345:
10346: =back
10347:
10348: =head2 Usererfile file routines (/uploaded*)
10349:
10350: =over 4
10351:
10352: =item *
10353:
10354: userfileupload(): main rotine for putting a file in a user or course's
10355: filespace, arguments are,
10356:
10357: formname - required - this is the name of the element in $env where the
10358: filename, and the contents of the file to create/modifed exist
10359: the filename is in $env{'form.'.$formname.'.filename'} and the
10360: contents of the file is located in $env{'form.'.$formname}
10361: coursedoc - if true, store the file in the course of the active role
10362: of the current user
10363: subdir - required - subdirectory to put the file in under ../userfiles/
10364: if undefined, it will be placed in "unknown"
10365:
10366: (This routine calls clean_filename() to remove any dangerous
10367: characters from the filename, and then calls finuserfileupload() to
10368: complete the transaction)
10369:
10370: returns either the url of the uploaded file (/uploaded/....) if successful
10371: and /adm/notfound.html if unsuccessful
10372:
10373: =item *
10374:
10375: clean_filename(): routine for cleaing a filename up for storage in
10376: userfile space, argument is:
10377:
10378: filename - proposed filename
10379:
10380: returns: the new clean filename
10381:
10382: =item *
10383:
10384: finishuserfileupload(): routine that creaes and sends the file to
10385: userspace, probably shouldn't be called directly
10386:
10387: docuname: username or courseid of destination for the file
10388: docudom: domain of user/course of destination for the file
10389: formname: same as for userfileupload()
10390: fname: filename (inculding subdirectories) for the file
10391:
10392: returns either the url of the uploaded file (/uploaded/....) if successful
10393: and /adm/notfound.html if unsuccessful
10394:
10395: =item *
10396:
10397: renameuserfile(): renames an existing userfile to a new name
10398:
10399: Args:
10400: docuname: username or courseid of destination for the file
10401: docudom: domain of user/course of destination for the file
10402: old: current file name (including any subdirs under userfiles)
10403: new: desired file name (including any subdirs under userfiles)
10404:
10405: =item *
10406:
10407: mkdiruserfile(): creates a directory is a userfiles dir
10408:
10409: Args:
10410: docuname: username or courseid of destination for the file
10411: docudom: domain of user/course of destination for the file
10412: dir: dir to create (including any subdirs under userfiles)
10413:
10414: =item *
10415:
10416: removeuserfile(): removes a file that exists in userfiles
10417:
10418: Args:
10419: docuname: username or courseid of destination for the file
10420: docudom: domain of user/course of destination for the file
10421: fname: filname to delete (including any subdirs under userfiles)
10422:
10423: =item *
10424:
10425: removeuploadedurl(): convience function for removeuserfile()
10426:
10427: Args:
10428: url: a full /uploaded/... url to delete
10429:
10430: =item *
10431:
10432: get_portfile_permissions():
10433: Args:
10434: domain: domain of user or course contain the portfolio files
10435: user: name of user or num of course contain the portfolio files
10436: Returns:
10437: hashref of a dump of the proper file_permissions.db
10438:
10439:
10440: =item *
10441:
10442: get_access_controls():
10443:
10444: Args:
10445: current_permissions: the hash ref returned from get_portfile_permissions()
10446: group: (optional) the group you want the files associated with
10447: file: (optional) the file you want access info on
10448:
10449: Returns:
10450: a hash (keys are file names) of hashes containing
10451: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
10452: values are XML containing access control settings (see below)
10453:
10454: Internal notes:
10455:
10456: access controls are stored in file_permissions.db as key=value pairs.
10457: key -> path to file/file_name\0uniqueID:scope_end_start
10458: where scope -> public,guest,course,group,domains or users.
10459: end -> UNIX time for end of access (0 -> no end date)
10460: start -> UNIX time for start of access
10461:
10462: value -> XML description of access control
10463: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
10464: <start></start>
10465: <end></end>
10466:
10467: <password></password> for scope type = guest
10468:
10469: <domain></domain> for scope type = course or group
10470: <number></number>
10471: <roles id="">
10472: <role></role>
10473: <access></access>
10474: <section></section>
10475: <group></group>
10476: </roles>
10477:
10478: <dom></dom> for scope type = domains
10479:
10480: <users> for scope type = users
10481: <user>
10482: <uname></uname>
10483: <udom></udom>
10484: </user>
10485: </users>
10486: </scope>
10487:
10488: Access data is also aggregated for each file in an additional key=value pair:
10489: key -> path to file/file_name\0accesscontrol
10490: value -> reference to hash
10491: hash contains key = value pairs
10492: where key = uniqueID:scope_end_start
10493: value = UNIX time record was last updated
10494:
10495: Used to improve speed of look-ups of access controls for each file.
10496:
10497: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
10498:
10499: modify_access_controls():
10500:
10501: Modifies access controls for a portfolio file
10502: Args
10503: 1. file name
10504: 2. reference to hash of required changes,
10505: 3. domain
10506: 4. username
10507: where domain,username are the domain of the portfolio owner
10508: (either a user or a course)
10509:
10510: Returns:
10511: 1. result of additions or updates ('ok' or 'error', with error message).
10512: 2. result of deletions ('ok' or 'error', with error message).
10513: 3. reference to hash of any new or updated access controls.
10514: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
10515: key = integer (inbound ID)
10516: value = uniqueID
10517:
10518: =back
10519:
10520: =head2 HTTP Helper Routines
10521:
10522: =over 4
10523:
10524: =item *
10525:
10526: escape() : unpack non-word characters into CGI-compatible hex codes
10527:
10528: =item *
10529:
10530: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
10531:
10532: =back
10533:
10534: =head1 PRIVATE SUBROUTINES
10535:
10536: =head2 Underlying communication routines (Shouldn't call)
10537:
10538: =over 4
10539:
10540: =item *
10541:
10542: subreply() : tries to pass a message to lonc, returns con_lost if incapable
10543:
10544: =item *
10545:
10546: reply() : uses subreply to send a message to remote machine, logs all failures
10547:
10548: =item *
10549:
10550: critical() : passes a critical message to another server; if cannot
10551: get through then place message in connection buffer directory and
10552: returns con_delayed, if incapable of saving message, returns
10553: con_failed
10554:
10555: =item *
10556:
10557: reconlonc() : tries to reconnect lonc client processes.
10558:
10559: =back
10560:
10561: =head2 Resource Access Logging
10562:
10563: =over 4
10564:
10565: =item *
10566:
10567: flushcourselogs() : flush (save) buffer logs and access logs
10568:
10569: =item *
10570:
10571: courselog($what) : save message for course in hash
10572:
10573: =item *
10574:
10575: courseacclog($what) : save message for course using &courselog(). Perform
10576: special processing for specific resource types (problems, exams, quizzes, etc).
10577:
10578: =item *
10579:
10580: goodbye() : flush course logs and log shutting down; it is called in srm.conf
10581: as a PerlChildExitHandler
10582:
10583: =back
10584:
10585: =head2 Other
10586:
10587: =over 4
10588:
10589: =item *
10590:
10591: symblist($mapname,%newhash) : update symbolic storage links
10592:
10593: =back
10594:
10595: =cut
10596:
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