File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.1166:
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Wed Apr 25 21:22:15 2012 UTC (12 years, 3 months ago) by
raeburn
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- lond uses client's LON-CAPA version to determine whether checking a user's
course roles for version requirements needs to occur -- will be skipped
on 2.10 and later, as it occurs client-side in rolesinit when building
roles/courses display.
- No longer require sixth arg for lonnet::dump
(frozen hash containing skipcheck => 1).
- Reverse changes in loncommon.pm 1.982, longroup.pm rev 1.26, 1.27
loncreateuser.pm rev 1.350, lonuserutils.pm 1.127, 1.137,
lonnet.pm rev 1.1086, 1.1078 which used the "$extra" sixth arg.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1166 2012/04/25 21:22:15 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
80: %managerstab);
81:
82: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
83: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
84: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
85: %courseownerbuf, %coursetypebuf,$locknum);
86:
87: use IO::Socket;
88: use GDBM_File;
89: use HTML::LCParser;
90: use Fcntl qw(:flock);
91: use Storable qw(thaw nfreeze);
92: use Time::HiRes qw( gettimeofday tv_interval );
93: use Cache::Memcached;
94: use Digest::MD5;
95: use Math::Random;
96: use File::MMagic;
97: use LONCAPA qw(:DEFAULT :match);
98: use LONCAPA::Configuration;
99: use LONCAPA::lonmetadata;
100:
101: use File::Copy;
102:
103: my $readit;
104: my $max_connection_retries = 10; # Or some such value.
105:
106: require Exporter;
107:
108: our @ISA = qw (Exporter);
109: our @EXPORT = qw(%env);
110:
111:
112: # --------------------------------------------------------------------- Logging
113: {
114: my $logid;
115: sub instructor_log {
116: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
117: if (($cnum eq '') || ($cdom eq '')) {
118: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
119: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
120: }
121: $logid++;
122: my $now = time();
123: my $id=$now.'00000'.$$.'00000'.$logid;
124: return &Apache::lonnet::put('nohist_'.$hash_name,
125: { $id => {
126: 'exe_uname' => $env{'user.name'},
127: 'exe_udom' => $env{'user.domain'},
128: 'exe_time' => $now,
129: 'exe_ip' => $ENV{'REMOTE_ADDR'},
130: 'delflag' => $delflag,
131: 'logentry' => $storehash,
132: 'uname' => $uname,
133: 'udom' => $udom,
134: }
135: },$cdom,$cnum);
136: }
137: }
138:
139: sub logtouch {
140: my $execdir=$perlvar{'lonDaemons'};
141: unless (-e "$execdir/logs/lonnet.log") {
142: open(my $fh,">>$execdir/logs/lonnet.log");
143: close $fh;
144: }
145: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
146: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
147: }
148:
149: sub logthis {
150: my $message=shift;
151: my $execdir=$perlvar{'lonDaemons'};
152: my $now=time;
153: my $local=localtime($now);
154: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
155: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
156: print $fh $logstring;
157: close($fh);
158: }
159: return 1;
160: }
161:
162: sub logperm {
163: my $message=shift;
164: my $execdir=$perlvar{'lonDaemons'};
165: my $now=time;
166: my $local=localtime($now);
167: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
168: print $fh "$now:$message:$local\n";
169: close($fh);
170: }
171: return 1;
172: }
173:
174: sub create_connection {
175: my ($hostname,$lonid) = @_;
176: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
177: Type => SOCK_STREAM,
178: Timeout => 10);
179: return 0 if (!$client);
180: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
181: my $result = <$client>;
182: chomp($result);
183: return 1 if ($result eq 'done');
184: return 0;
185: }
186:
187: sub get_server_timezone {
188: my ($cnum,$cdom) = @_;
189: my $home=&homeserver($cnum,$cdom);
190: if ($home ne 'no_host') {
191: my $cachetime = 24*3600;
192: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
193: if (defined($cached)) {
194: return $timezone;
195: } else {
196: my $timezone = &reply('servertimezone',$home);
197: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
198: }
199: }
200: }
201:
202: sub get_server_distarch {
203: my ($lonhost,$ignore_cache) = @_;
204: if (defined($lonhost)) {
205: if (!defined(&hostname($lonhost))) {
206: return;
207: }
208: my $cachetime = 12*3600;
209: if (!$ignore_cache) {
210: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
211: if (defined($cached)) {
212: return $distarch;
213: }
214: }
215: my $rep = &reply('serverdistarch',$lonhost);
216: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
217: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
218: $rep eq '') {
219: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
220: }
221: }
222: return;
223: }
224:
225: sub get_server_loncaparev {
226: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
227: if (defined($lonhost)) {
228: if (!defined(&hostname($lonhost))) {
229: undef($lonhost);
230: }
231: }
232: if (!defined($lonhost)) {
233: if (defined(&domain($dom,'primary'))) {
234: $lonhost=&domain($dom,'primary');
235: if ($lonhost eq 'no_host') {
236: undef($lonhost);
237: }
238: }
239: }
240: if (defined($lonhost)) {
241: my $cachetime = 12*3600;
242: if (!$ignore_cache) {
243: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
244: if (defined($cached)) {
245: return $loncaparev;
246: }
247: }
248: my ($answer,$loncaparev);
249: my @ids=¤t_machine_ids();
250: if (grep(/^\Q$lonhost\E$/,@ids)) {
251: $answer = $perlvar{'lonVersion'};
252: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
253: $loncaparev = $1;
254: }
255: } else {
256: $answer = &reply('serverloncaparev',$lonhost);
257: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
258: if ($caller eq 'loncron') {
259: my $ua=new LWP::UserAgent;
260: $ua->timeout(4);
261: my $protocol = $protocol{$lonhost};
262: $protocol = 'http' if ($protocol ne 'https');
263: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
264: my $request=new HTTP::Request('GET',$url);
265: my $response=$ua->request($request);
266: unless ($response->is_error()) {
267: my $content = $response->content;
268: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
269: $loncaparev = $1;
270: }
271: }
272: } else {
273: $loncaparev = $loncaparevs{$lonhost};
274: }
275: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
276: $loncaparev = $1;
277: }
278: }
279: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
280: }
281: }
282:
283: sub get_server_homeID {
284: my ($hostname,$ignore_cache,$caller) = @_;
285: unless ($ignore_cache) {
286: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
287: if (defined($cached)) {
288: return $serverhomeID;
289: }
290: }
291: my $cachetime = 12*3600;
292: my $serverhomeID;
293: if ($caller eq 'loncron') {
294: my @machine_ids = &machine_ids($hostname);
295: foreach my $id (@machine_ids) {
296: my $response = &reply('serverhomeID',$id);
297: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
298: $serverhomeID = $response;
299: last;
300: }
301: }
302: if ($serverhomeID eq '') {
303: $serverhomeID = $machine_ids[-1];
304: }
305: } else {
306: $serverhomeID = $serverhomeIDs{$hostname};
307: }
308: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
309: }
310:
311: sub get_remote_globals {
312: my ($lonhost,$whathash,$ignore_cache) = @_;
313: my ($result,%returnhash,%whatneeded);
314: if (ref($whathash) eq 'HASH') {
315: foreach my $what (sort(keys(%{$whathash}))) {
316: my $hashid = $lonhost.'-'.$what;
317: my ($response,$cached);
318: unless ($ignore_cache) {
319: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
320: }
321: if (defined($cached)) {
322: $returnhash{$what} = $response;
323: } else {
324: $whatneeded{$what} = 1;
325: }
326: }
327: if (keys(%whatneeded) == 0) {
328: $result = 'ok';
329: } else {
330: my $requested = &freeze_escape(\%whatneeded);
331: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
332: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
333: ($rep eq 'unknown_cmd')) {
334: $result = $rep;
335: } else {
336: $result = 'ok';
337: my @pairs=split(/\&/,$rep);
338: foreach my $item (@pairs) {
339: my ($key,$value)=split(/=/,$item,2);
340: my $what = &unescape($key);
341: my $hashid = $lonhost.'-'.$what;
342: $returnhash{$what}=&thaw_unescape($value);
343: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
344: }
345: }
346: }
347: }
348: return ($result,\%returnhash);
349: }
350:
351: sub remote_devalidate_cache {
352: my ($lonhost,$name,$id) = @_;
353: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
354: return $response;
355: }
356:
357: # -------------------------------------------------- Non-critical communication
358: sub subreply {
359: my ($cmd,$server)=@_;
360: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
361: #
362: # With loncnew process trimming, there's a timing hole between lonc server
363: # process exit and the master server picking up the listen on the AF_UNIX
364: # socket. In that time interval, a lock file will exist:
365:
366: my $lockfile=$peerfile.".lock";
367: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
368: sleep(1);
369: }
370: # At this point, either a loncnew parent is listening or an old lonc
371: # or loncnew child is listening so we can connect or everything's dead.
372: #
373: # We'll give the connection a few tries before abandoning it. If
374: # connection is not possible, we'll con_lost back to the client.
375: #
376: my $client;
377: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
378: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
379: Type => SOCK_STREAM,
380: Timeout => 10);
381: if ($client) {
382: last; # Connected!
383: } else {
384: &create_connection(&hostname($server),$server);
385: }
386: sleep(1); # Try again later if failed connection.
387: }
388: my $answer;
389: if ($client) {
390: print $client "sethost:$server:$cmd\n";
391: $answer=<$client>;
392: if (!$answer) { $answer="con_lost"; }
393: chomp($answer);
394: } else {
395: $answer = 'con_lost'; # Failed connection.
396: }
397: return $answer;
398: }
399:
400: sub reply {
401: my ($cmd,$server)=@_;
402: unless (defined(&hostname($server))) { return 'no_such_host'; }
403: my $answer=subreply($cmd,$server);
404: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
405: &logthis("<font color=\"blue\">WARNING:".
406: " $cmd to $server returned $answer</font>");
407: }
408: return $answer;
409: }
410:
411: # ----------------------------------------------------------- Send USR1 to lonc
412:
413: sub reconlonc {
414: my ($lonid) = @_;
415: my $hostname = &hostname($lonid);
416: if ($lonid) {
417: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
418: if ($hostname && -e $peerfile) {
419: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
420: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
421: Type => SOCK_STREAM,
422: Timeout => 10);
423: if ($client) {
424: print $client ("reset_retries\n");
425: my $answer=<$client>;
426: #reset just this one.
427: }
428: }
429: return;
430: }
431:
432: &logthis("Trying to reconnect lonc");
433: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
434: if (open(my $fh,"<$loncfile")) {
435: my $loncpid=<$fh>;
436: chomp($loncpid);
437: if (kill 0 => $loncpid) {
438: &logthis("lonc at pid $loncpid responding, sending USR1");
439: kill USR1 => $loncpid;
440: sleep 1;
441: } else {
442: &logthis(
443: "<font color=\"blue\">WARNING:".
444: " lonc at pid $loncpid not responding, giving up</font>");
445: }
446: } else {
447: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
448: }
449: }
450:
451: # ------------------------------------------------------ Critical communication
452:
453: sub critical {
454: my ($cmd,$server)=@_;
455: unless (&hostname($server)) {
456: &logthis("<font color=\"blue\">WARNING:".
457: " Critical message to unknown server ($server)</font>");
458: return 'no_such_host';
459: }
460: my $answer=reply($cmd,$server);
461: if ($answer eq 'con_lost') {
462: &reconlonc("$perlvar{'lonSockDir'}/$server");
463: my $answer=reply($cmd,$server);
464: if ($answer eq 'con_lost') {
465: my $now=time;
466: my $middlename=$cmd;
467: $middlename=substr($middlename,0,16);
468: $middlename=~s/\W//g;
469: my $dfilename=
470: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
471: $dumpcount++;
472: {
473: my $dfh;
474: if (open($dfh,">$dfilename")) {
475: print $dfh "$cmd\n";
476: close($dfh);
477: }
478: }
479: sleep 2;
480: my $wcmd='';
481: {
482: my $dfh;
483: if (open($dfh,"<$dfilename")) {
484: $wcmd=<$dfh>;
485: close($dfh);
486: }
487: }
488: chomp($wcmd);
489: if ($wcmd eq $cmd) {
490: &logthis("<font color=\"blue\">WARNING: ".
491: "Connection buffer $dfilename: $cmd</font>");
492: &logperm("D:$server:$cmd");
493: return 'con_delayed';
494: } else {
495: &logthis("<font color=\"red\">CRITICAL:"
496: ." Critical connection failed: $server $cmd</font>");
497: &logperm("F:$server:$cmd");
498: return 'con_failed';
499: }
500: }
501: }
502: return $answer;
503: }
504:
505: # ------------------------------------------- check if return value is an error
506:
507: sub error {
508: my ($result) = @_;
509: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
510: if ($2 == 2) { return undef; }
511: return $1;
512: }
513: return undef;
514: }
515:
516: sub convert_and_load_session_env {
517: my ($lonidsdir,$handle)=@_;
518: my @profile;
519: {
520: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
521: if (!$opened) {
522: return 0;
523: }
524: flock($idf,LOCK_SH);
525: @profile=<$idf>;
526: close($idf);
527: }
528: my %temp_env;
529: foreach my $line (@profile) {
530: if ($line !~ m/=/) {
531: return 0;
532: }
533: chomp($line);
534: my ($envname,$envvalue)=split(/=/,$line,2);
535: $temp_env{&unescape($envname)} = &unescape($envvalue);
536: }
537: unlink("$lonidsdir/$handle.id");
538: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
539: 0640)) {
540: %disk_env = %temp_env;
541: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
542: untie(%disk_env);
543: }
544: return 1;
545: }
546:
547: # ------------------------------------------- Transfer profile into environment
548: my $env_loaded;
549: sub transfer_profile_to_env {
550: my ($lonidsdir,$handle,$force_transfer) = @_;
551: if (!$force_transfer && $env_loaded) { return; }
552:
553: if (!defined($lonidsdir)) {
554: $lonidsdir = $perlvar{'lonIDsDir'};
555: }
556: if (!defined($handle)) {
557: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
558: }
559:
560: my $convert;
561: {
562: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
563: if (!$opened) {
564: return;
565: }
566: flock($idf,LOCK_SH);
567: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
568: &GDBM_READER(),0640)) {
569: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
570: untie(%disk_env);
571: } else {
572: $convert = 1;
573: }
574: }
575: if ($convert) {
576: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
577: &logthis("Failed to load session, or convert session.");
578: }
579: }
580:
581: my %remove;
582: while ( my $envname = each(%env) ) {
583: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
584: if ($time < time-300) {
585: $remove{$key}++;
586: }
587: }
588: }
589:
590: $env{'user.environment'} = "$lonidsdir/$handle.id";
591: $env_loaded=1;
592: foreach my $expired_key (keys(%remove)) {
593: &delenv($expired_key);
594: }
595: }
596:
597: # ---------------------------------------------------- Check for valid session
598: sub check_for_valid_session {
599: my ($r,$name) = @_;
600: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
601: if ($name eq '') {
602: $name = 'lonID';
603: }
604: my $lonid=$cookies{$name};
605: return undef if (!$lonid);
606:
607: my $handle=&LONCAPA::clean_handle($lonid->value);
608: my $lonidsdir;
609: if ($name eq 'lonDAV') {
610: $lonidsdir=$r->dir_config('lonDAVsessDir');
611: } else {
612: $lonidsdir=$r->dir_config('lonIDsDir');
613: }
614: return undef if (!-e "$lonidsdir/$handle.id");
615:
616: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
617: return undef if (!$opened);
618:
619: flock($idf,LOCK_SH);
620: my %disk_env;
621: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
622: &GDBM_READER(),0640)) {
623: return undef;
624: }
625:
626: if (!defined($disk_env{'user.name'})
627: || !defined($disk_env{'user.domain'})) {
628: return undef;
629: }
630: return $handle;
631: }
632:
633: sub timed_flock {
634: my ($file,$lock_type) = @_;
635: my $failed=0;
636: eval {
637: local $SIG{__DIE__}='DEFAULT';
638: local $SIG{ALRM}=sub {
639: $failed=1;
640: die("failed lock");
641: };
642: alarm(13);
643: flock($file,$lock_type);
644: alarm(0);
645: };
646: if ($failed) {
647: return undef;
648: } else {
649: return 1;
650: }
651: }
652:
653: # ---------------------------------------------------------- Append Environment
654:
655: sub appenv {
656: my ($newenv,$roles) = @_;
657: if (ref($newenv) eq 'HASH') {
658: foreach my $key (keys(%{$newenv})) {
659: my $refused = 0;
660: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
661: $refused = 1;
662: if (ref($roles) eq 'ARRAY') {
663: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
664: if (grep(/^\Q$role\E$/,@{$roles})) {
665: $refused = 0;
666: }
667: }
668: }
669: if ($refused) {
670: &logthis("<font color=\"blue\">WARNING: ".
671: "Attempt to modify environment ".$key." to ".$newenv->{$key}
672: .'</font>');
673: delete($newenv->{$key});
674: } else {
675: $env{$key}=$newenv->{$key};
676: }
677: }
678: my $opened = open(my $env_file,'+<',$env{'user.environment'});
679: if ($opened
680: && &timed_flock($env_file,LOCK_EX)
681: &&
682: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
683: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
684: while (my ($key,$value) = each(%{$newenv})) {
685: $disk_env{$key} = $value;
686: }
687: untie(%disk_env);
688: }
689: }
690: return 'ok';
691: }
692: # ----------------------------------------------------- Delete from Environment
693:
694: sub delenv {
695: my ($delthis,$regexp,$roles) = @_;
696: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
697: my $refused = 1;
698: if (ref($roles) eq 'ARRAY') {
699: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
700: if (grep(/^\Q$role\E$/,@{$roles})) {
701: $refused = 0;
702: }
703: }
704: if ($refused) {
705: &logthis("<font color=\"blue\">WARNING: ".
706: "Attempt to delete from environment ".$delthis);
707: return 'error';
708: }
709: }
710: my $opened = open(my $env_file,'+<',$env{'user.environment'});
711: if ($opened
712: && &timed_flock($env_file,LOCK_EX)
713: &&
714: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
715: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
716: foreach my $key (keys(%disk_env)) {
717: if ($regexp) {
718: if ($key=~/^$delthis/) {
719: delete($env{$key});
720: delete($disk_env{$key});
721: }
722: } else {
723: if ($key=~/^\Q$delthis\E/) {
724: delete($env{$key});
725: delete($disk_env{$key});
726: }
727: }
728: }
729: untie(%disk_env);
730: }
731: return 'ok';
732: }
733:
734: sub get_env_multiple {
735: my ($name) = @_;
736: my @values;
737: if (defined($env{$name})) {
738: # exists is it an array
739: if (ref($env{$name})) {
740: @values=@{ $env{$name} };
741: } else {
742: $values[0]=$env{$name};
743: }
744: }
745: return(@values);
746: }
747:
748: # ------------------------------------------------------------------- Locking
749:
750: sub set_lock {
751: my ($text)=@_;
752: $locknum++;
753: my $id=$$.'-'.$locknum;
754: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
755: 'session.lock.'.$id => $text});
756: return $id;
757: }
758:
759: sub get_locks {
760: my $num=0;
761: my %texts=();
762: foreach my $lock (split(/\,/,$env{'session.locks'})) {
763: if ($lock=~/\w/) {
764: $num++;
765: $texts{$lock}=$env{'session.lock.'.$lock};
766: }
767: }
768: return ($num,%texts);
769: }
770:
771: sub remove_lock {
772: my ($id)=@_;
773: my $newlocks='';
774: foreach my $lock (split(/\,/,$env{'session.locks'})) {
775: if (($lock=~/\w/) && ($lock ne $id)) {
776: $newlocks.=','.$lock;
777: }
778: }
779: &appenv({'session.locks' => $newlocks});
780: &delenv('session.lock.'.$id);
781: }
782:
783: sub remove_all_locks {
784: my $activelocks=$env{'session.locks'};
785: foreach my $lock (split(/\,/,$env{'session.locks'})) {
786: if ($lock=~/\w/) {
787: &remove_lock($lock);
788: }
789: }
790: }
791:
792:
793: # ------------------------------------------ Find out current server userload
794: sub userload {
795: my $numusers=0;
796: {
797: opendir(LONIDS,$perlvar{'lonIDsDir'});
798: my $filename;
799: my $curtime=time;
800: while ($filename=readdir(LONIDS)) {
801: next if ($filename eq '.' || $filename eq '..');
802: next if ($filename =~ /publicuser_\d+\.id/);
803: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
804: if ($curtime-$mtime < 1800) { $numusers++; }
805: }
806: closedir(LONIDS);
807: }
808: my $userloadpercent=0;
809: my $maxuserload=$perlvar{'lonUserLoadLim'};
810: if ($maxuserload) {
811: $userloadpercent=100*$numusers/$maxuserload;
812: }
813: $userloadpercent=sprintf("%.2f",$userloadpercent);
814: return $userloadpercent;
815: }
816:
817: # ------------------------------ Find server with least workload from spare.tab
818:
819: sub spareserver {
820: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
821: my $spare_server;
822: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
823: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
824: : $userloadpercent;
825: my ($uint_dom,$remotesessions);
826: if (($udom ne '') && (&domain($udom) ne '')) {
827: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
828: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
829: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
830: $remotesessions = $udomdefaults{'remotesessions'};
831: }
832: my $spareshash = &this_host_spares($udom);
833: if (ref($spareshash) eq 'HASH') {
834: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
835: foreach my $try_server (@{ $spareshash->{'primary'} }) {
836: if ($uint_dom) {
837: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
838: $try_server));
839: }
840: ($spare_server, $lowest_load) =
841: &compare_server_load($try_server, $spare_server, $lowest_load);
842: }
843: }
844:
845: my $found_server = ($spare_server ne '' && $lowest_load < 100);
846:
847: if (!$found_server) {
848: if (ref($spareshash->{'default'}) eq 'ARRAY') {
849: foreach my $try_server (@{ $spareshash->{'default'} }) {
850: if ($uint_dom) {
851: next unless (&spare_can_host($udom,$uint_dom,
852: $remotesessions,$try_server));
853: }
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858: }
859: }
860:
861: if (!$want_server_name) {
862: my $protocol = 'http';
863: if ($protocol{$spare_server} eq 'https') {
864: $protocol = $protocol{$spare_server};
865: }
866: if (defined($spare_server)) {
867: my $hostname = &hostname($spare_server);
868: if (defined($hostname)) {
869: $spare_server = $protocol.'://'.$hostname;
870: }
871: }
872: }
873: return $spare_server;
874: }
875:
876: sub compare_server_load {
877: my ($try_server, $spare_server, $lowest_load) = @_;
878:
879: my $loadans = &reply('load', $try_server);
880: my $userloadans = &reply('userload',$try_server);
881:
882: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
883: return ($spare_server, $lowest_load); #didn't get a number from the server
884: }
885:
886: my $load;
887: if ($loadans =~ /\d/) {
888: if ($userloadans =~ /\d/) {
889: #both are numbers, pick the bigger one
890: $load = ($loadans > $userloadans) ? $loadans
891: : $userloadans;
892: } else {
893: $load = $loadans;
894: }
895: } else {
896: $load = $userloadans;
897: }
898:
899: if (($load =~ /\d/) && ($load < $lowest_load)) {
900: $spare_server = $try_server;
901: $lowest_load = $load;
902: }
903: return ($spare_server,$lowest_load);
904: }
905:
906: # --------------------------- ask offload servers if user already has a session
907: sub find_existing_session {
908: my ($udom,$uname) = @_;
909: my $spareshash = &this_host_spares($udom);
910: if (ref($spareshash) eq 'HASH') {
911: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
912: foreach my $try_server (@{ $spareshash->{'primary'} }) {
913: return $try_server if (&has_user_session($try_server, $udom, $uname));
914: }
915: }
916: if (ref($spareshash->{'default'}) eq 'ARRAY') {
917: foreach my $try_server (@{ $spareshash->{'default'} }) {
918: return $try_server if (&has_user_session($try_server, $udom, $uname));
919: }
920: }
921: }
922: return;
923: }
924:
925: # -------------------------------- ask if server already has a session for user
926: sub has_user_session {
927: my ($lonid,$udom,$uname) = @_;
928: my $result = &reply(join(':','userhassession',
929: map {&escape($_)} ($udom,$uname)),$lonid);
930: return 1 if ($result eq 'ok');
931:
932: return 0;
933: }
934:
935: # --------- determine least loaded server in a user's domain which allows login
936:
937: sub choose_server {
938: my ($udom,$checkloginvia) = @_;
939: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
940: my %servers = &get_servers($udom);
941: my $lowest_load = 30000;
942: my ($login_host,$hostname,$portal_path,$isredirect);
943: foreach my $lonhost (keys(%servers)) {
944: my $loginvia;
945: if ($checkloginvia) {
946: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
947: if ($loginvia) {
948: my ($server,$path) = split(/:/,$loginvia);
949: ($login_host, $lowest_load) =
950: &compare_server_load($server, $login_host, $lowest_load);
951: if ($login_host eq $server) {
952: $portal_path = $path;
953: $isredirect = 1;
954: }
955: } else {
956: ($login_host, $lowest_load) =
957: &compare_server_load($lonhost, $login_host, $lowest_load);
958: if ($login_host eq $lonhost) {
959: $portal_path = '';
960: $isredirect = '';
961: }
962: }
963: } else {
964: ($login_host, $lowest_load) =
965: &compare_server_load($lonhost, $login_host, $lowest_load);
966: }
967: }
968: if ($login_host ne '') {
969: $hostname = &hostname($login_host);
970: }
971: return ($login_host,$hostname,$portal_path,$isredirect);
972: }
973:
974: # --------------------------------------------- Try to change a user's password
975:
976: sub changepass {
977: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
978: $currentpass = &escape($currentpass);
979: $newpass = &escape($newpass);
980: my $lonhost = $perlvar{'lonHostID'};
981: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
982: $server);
983: if (! $answer) {
984: &logthis("No reply on password change request to $server ".
985: "by $uname in domain $udom.");
986: } elsif ($answer =~ "^ok") {
987: &logthis("$uname in $udom successfully changed their password ".
988: "on $server.");
989: } elsif ($answer =~ "^pwchange_failure") {
990: &logthis("$uname in $udom was unable to change their password ".
991: "on $server. The action was blocked by either lcpasswd ".
992: "or pwchange");
993: } elsif ($answer =~ "^non_authorized") {
994: &logthis("$uname in $udom did not get their password correct when ".
995: "attempting to change it on $server.");
996: } elsif ($answer =~ "^auth_mode_error") {
997: &logthis("$uname in $udom attempted to change their password despite ".
998: "not being locally or internally authenticated on $server.");
999: } elsif ($answer =~ "^unknown_user") {
1000: &logthis("$uname in $udom attempted to change their password ".
1001: "on $server but were unable to because $server is not ".
1002: "their home server.");
1003: } elsif ($answer =~ "^refused") {
1004: &logthis("$server refused to change $uname in $udom password because ".
1005: "it was sent an unencrypted request to change the password.");
1006: } elsif ($answer =~ "invalid_client") {
1007: &logthis("$server refused to change $uname in $udom password because ".
1008: "it was a reset by e-mail originating from an invalid server.");
1009: }
1010: return $answer;
1011: }
1012:
1013: # ----------------------- Try to determine user's current authentication scheme
1014:
1015: sub queryauthenticate {
1016: my ($uname,$udom)=@_;
1017: my $uhome=&homeserver($uname,$udom);
1018: if (!$uhome) {
1019: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1020: return 'no_host';
1021: }
1022: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1023: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1024: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1025: }
1026: return $answer;
1027: }
1028:
1029: # --------- Try to authenticate user from domain's lib servers (first this one)
1030:
1031: sub authenticate {
1032: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1033: $upass=&escape($upass);
1034: $uname= &LONCAPA::clean_username($uname);
1035: my $uhome=&homeserver($uname,$udom,1);
1036: my $newhome;
1037: if ((!$uhome) || ($uhome eq 'no_host')) {
1038: # Maybe the machine was offline and only re-appeared again recently?
1039: &reconlonc();
1040: # One more
1041: $uhome=&homeserver($uname,$udom,1);
1042: if (($uhome eq 'no_host') && $checkdefauth) {
1043: if (defined(&domain($udom,'primary'))) {
1044: $newhome=&domain($udom,'primary');
1045: }
1046: if ($newhome ne '') {
1047: $uhome = $newhome;
1048: }
1049: }
1050: if ((!$uhome) || ($uhome eq 'no_host')) {
1051: &logthis("User $uname at $udom is unknown in authenticate");
1052: return 'no_host';
1053: }
1054: }
1055: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1056: if ($answer eq 'authorized') {
1057: if ($newhome) {
1058: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1059: return 'no_account_on_host';
1060: } else {
1061: &logthis("User $uname at $udom authorized by $uhome");
1062: return $uhome;
1063: }
1064: }
1065: if ($answer eq 'non_authorized') {
1066: &logthis("User $uname at $udom rejected by $uhome");
1067: return 'no_host';
1068: }
1069: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1070: return 'no_host';
1071: }
1072:
1073: sub can_host_session {
1074: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1075: my $canhost = 1;
1076: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1077: if (ref($remotesessions) eq 'HASH') {
1078: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1079: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1080: $canhost = 0;
1081: } else {
1082: $canhost = 1;
1083: }
1084: }
1085: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1086: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1087: $canhost = 1;
1088: } else {
1089: $canhost = 0;
1090: }
1091: }
1092: if ($canhost) {
1093: if ($remotesessions->{'version'} ne '') {
1094: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1095: if ($reqmajor ne '' && $reqminor ne '') {
1096: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1097: my $major = $1;
1098: my $minor = $2;
1099: if (($major < $reqmajor ) ||
1100: (($major == $reqmajor) && ($minor < $reqminor))) {
1101: $canhost = 0;
1102: }
1103: } else {
1104: $canhost = 0;
1105: }
1106: }
1107: }
1108: }
1109: }
1110: if ($canhost) {
1111: if (ref($hostedsessions) eq 'HASH') {
1112: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1113: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1114: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1115: if (($uint_dom ne '') &&
1116: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1117: $canhost = 0;
1118: } else {
1119: $canhost = 1;
1120: }
1121: }
1122: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1123: if (($uint_dom ne '') &&
1124: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1125: $canhost = 1;
1126: } else {
1127: $canhost = 0;
1128: }
1129: }
1130: }
1131: }
1132: return $canhost;
1133: }
1134:
1135: sub spare_can_host {
1136: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1137: my $canhost=1;
1138: my @intdoms;
1139: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1140: if (ref($internet_names) eq 'ARRAY') {
1141: @intdoms = @{$internet_names};
1142: }
1143: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1144: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1145: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1146: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1147: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1148: $canhost = &can_host_session($udom,$try_server,$remoterev,
1149: $remotesessions,
1150: $defdomdefaults{'hostedsessions'});
1151: }
1152: return $canhost;
1153: }
1154:
1155: sub this_host_spares {
1156: my ($dom) = @_;
1157: my ($dom_in_use,$lonhost_in_use,$result);
1158: my @hosts = ¤t_machine_ids();
1159: foreach my $lonhost (@hosts) {
1160: if (&host_domain($lonhost) eq $dom) {
1161: $dom_in_use = $dom;
1162: $lonhost_in_use = $lonhost;
1163: last;
1164: }
1165: }
1166: if ($dom_in_use ne '') {
1167: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1168: }
1169: if (ref($result) ne 'HASH') {
1170: $lonhost_in_use = $perlvar{'lonHostID'};
1171: $dom_in_use = &host_domain($lonhost_in_use);
1172: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1173: if (ref($result) ne 'HASH') {
1174: $result = \%spareid;
1175: }
1176: }
1177: return $result;
1178: }
1179:
1180: sub spares_for_offload {
1181: my ($dom_in_use,$lonhost_in_use) = @_;
1182: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1183: if (defined($cached)) {
1184: return $result;
1185: } else {
1186: my $cachetime = 60*60*24;
1187: my %domconfig =
1188: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1189: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1190: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1191: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1192: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1193: }
1194: }
1195: }
1196: }
1197: return;
1198: }
1199:
1200: sub get_lonbalancer_config {
1201: my ($servers) = @_;
1202: my ($currbalancer,$currtargets);
1203: if (ref($servers) eq 'HASH') {
1204: foreach my $server (keys(%{$servers})) {
1205: my %what = (
1206: spareid => 1,
1207: perlvar => 1,
1208: );
1209: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1210: if ($result eq 'ok') {
1211: if (ref($returnhash) eq 'HASH') {
1212: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1213: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1214: $currbalancer = $server;
1215: $currtargets = {};
1216: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1217: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1218: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1219: }
1220: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1221: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1222: }
1223: }
1224: last;
1225: }
1226: }
1227: }
1228: }
1229: }
1230: }
1231: return ($currbalancer,$currtargets);
1232: }
1233:
1234: sub check_loadbalancing {
1235: my ($uname,$udom) = @_;
1236: my ($is_balancer,$dom_in_use,$homeintdom,$rule_in_effect,
1237: $offloadto,$otherserver);
1238: my $lonhost = $perlvar{'lonHostID'};
1239: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1240: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1241: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1242: my $serverhomedom = &host_domain($lonhost);
1243:
1244: my $cachetime = 60*60*24;
1245:
1246: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1247: $dom_in_use = $udom;
1248: $homeintdom = 1;
1249: } else {
1250: $dom_in_use = $serverhomedom;
1251: }
1252: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1253: unless (defined($cached)) {
1254: my %domconfig =
1255: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1256: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1257: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1258: }
1259: }
1260: if (ref($result) eq 'HASH') {
1261: my $currbalancer = $result->{'lonhost'};
1262: my $currtargets = $result->{'targets'};
1263: my $currrules = $result->{'rules'};
1264: if ($currbalancer ne '') {
1265: my @hosts = ¤t_machine_ids();
1266: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1267: $is_balancer = 1;
1268: }
1269: }
1270: if ($is_balancer) {
1271: if (ref($currrules) eq 'HASH') {
1272: if ($homeintdom) {
1273: if ($uname ne '') {
1274: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1275: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1276: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1277: $rule_in_effect = $currrules->{'_LC_author'};
1278: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1279: $rule_in_effect = $currrules->{'_LC_adv'}
1280: }
1281: }
1282: if ($rule_in_effect eq '') {
1283: my %userenv = &userenvironment($udom,$uname,'inststatus');
1284: if ($userenv{'inststatus'} ne '') {
1285: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1286: my ($othertitle,$usertypes,$types) =
1287: &Apache::loncommon::sorted_inst_types($udom);
1288: if (ref($types) eq 'ARRAY') {
1289: foreach my $type (@{$types}) {
1290: if (grep(/^\Q$type\E$/,@statuses)) {
1291: if (exists($currrules->{$type})) {
1292: $rule_in_effect = $currrules->{$type};
1293: }
1294: }
1295: }
1296: }
1297: } else {
1298: if (exists($currrules->{'default'})) {
1299: $rule_in_effect = $currrules->{'default'};
1300: }
1301: }
1302: }
1303: } else {
1304: if (exists($currrules->{'default'})) {
1305: $rule_in_effect = $currrules->{'default'};
1306: }
1307: }
1308: } else {
1309: if ($currrules->{'_LC_external'} ne '') {
1310: $rule_in_effect = $currrules->{'_LC_external'};
1311: }
1312: }
1313: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1314: $uname,$udom);
1315: }
1316: }
1317: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1318: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1319: unless (defined($cached)) {
1320: my %domconfig =
1321: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1322: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1323: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1324: }
1325: }
1326: if (ref($result) eq 'HASH') {
1327: my $currbalancer = $result->{'lonhost'};
1328: my $currtargets = $result->{'targets'};
1329: my $currrules = $result->{'rules'};
1330:
1331: if ($currbalancer eq $lonhost) {
1332: $is_balancer = 1;
1333: if (ref($currrules) eq 'HASH') {
1334: if ($currrules->{'_LC_internetdom'} ne '') {
1335: $rule_in_effect = $currrules->{'_LC_internetdom'};
1336: }
1337: }
1338: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1339: $uname,$udom);
1340: }
1341: } else {
1342: if ($perlvar{'lonBalancer'} eq 'yes') {
1343: $is_balancer = 1;
1344: $offloadto = &this_host_spares($dom_in_use);
1345: }
1346: }
1347: } else {
1348: if ($perlvar{'lonBalancer'} eq 'yes') {
1349: $is_balancer = 1;
1350: $offloadto = &this_host_spares($dom_in_use);
1351: }
1352: }
1353: my $lowest_load = 30000;
1354: if (ref($offloadto) eq 'HASH') {
1355: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1356: foreach my $try_server (@{$offloadto->{'primary'}}) {
1357: ($otherserver,$lowest_load) =
1358: &compare_server_load($try_server,$otherserver,$lowest_load);
1359: }
1360: }
1361: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1362:
1363: if (!$found_server) {
1364: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1365: foreach my $try_server (@{$offloadto->{'default'}}) {
1366: ($otherserver,$lowest_load) =
1367: &compare_server_load($try_server,$otherserver,$lowest_load);
1368: }
1369: }
1370: }
1371: } elsif (ref($offloadto) eq 'ARRAY') {
1372: if (@{$offloadto} == 1) {
1373: $otherserver = $offloadto->[0];
1374: } elsif (@{$offloadto} > 1) {
1375: foreach my $try_server (@{$offloadto}) {
1376: ($otherserver,$lowest_load) =
1377: &compare_server_load($try_server,$otherserver,$lowest_load);
1378: }
1379: }
1380: }
1381: return ($is_balancer,$otherserver);
1382: }
1383:
1384: sub get_loadbalancer_targets {
1385: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1386: my $offloadto;
1387: if ($rule_in_effect eq '') {
1388: $offloadto = $currtargets;
1389: } else {
1390: if ($rule_in_effect eq 'homeserver') {
1391: my $homeserver = &homeserver($uname,$udom);
1392: if ($homeserver ne 'no_host') {
1393: $offloadto = [$homeserver];
1394: }
1395: } elsif ($rule_in_effect eq 'externalbalancer') {
1396: my %domconfig =
1397: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1398: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1399: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1400: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1401: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1402: }
1403: }
1404: } else {
1405: my %servers = &dom_servers($udom);
1406: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1407: if (&hostname($remotebalancer) ne '') {
1408: $offloadto = [$remotebalancer];
1409: }
1410: }
1411: } elsif (&hostname($rule_in_effect) ne '') {
1412: $offloadto = [$rule_in_effect];
1413: }
1414: }
1415: return $offloadto;
1416: }
1417:
1418: sub internet_dom_servers {
1419: my ($dom) = @_;
1420: my (%uniqservers,%servers);
1421: my $primaryserver = &hostname(&domain($dom,'primary'));
1422: my @machinedoms = &machine_domains($primaryserver);
1423: foreach my $mdom (@machinedoms) {
1424: my %currservers = %servers;
1425: my %server = &get_servers($mdom);
1426: %servers = (%currservers,%server);
1427: }
1428: my %by_hostname;
1429: foreach my $id (keys(%servers)) {
1430: push(@{$by_hostname{$servers{$id}}},$id);
1431: }
1432: foreach my $hostname (sort(keys(%by_hostname))) {
1433: if (@{$by_hostname{$hostname}} > 1) {
1434: my $match = 0;
1435: foreach my $id (@{$by_hostname{$hostname}}) {
1436: if (&host_domain($id) eq $dom) {
1437: $uniqservers{$id} = $hostname;
1438: $match = 1;
1439: }
1440: }
1441: unless ($match) {
1442: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1443: }
1444: } else {
1445: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1446: }
1447: }
1448: return %uniqservers;
1449: }
1450:
1451: # ---------------------- Find the homebase for a user from domain's lib servers
1452:
1453: my %homecache;
1454: sub homeserver {
1455: my ($uname,$udom,$ignoreBadCache)=@_;
1456: my $index="$uname:$udom";
1457:
1458: if (exists($homecache{$index})) { return $homecache{$index}; }
1459:
1460: my %servers = &get_servers($udom,'library');
1461: foreach my $tryserver (keys(%servers)) {
1462: next if ($ignoreBadCache ne 'true' &&
1463: exists($badServerCache{$tryserver}));
1464:
1465: my $answer=reply("home:$udom:$uname",$tryserver);
1466: if ($answer eq 'found') {
1467: delete($badServerCache{$tryserver});
1468: return $homecache{$index}=$tryserver;
1469: } elsif ($answer eq 'no_host') {
1470: $badServerCache{$tryserver}=1;
1471: }
1472: }
1473: return 'no_host';
1474: }
1475:
1476: # ------------------------------------- Find the usernames behind a list of IDs
1477:
1478: sub idget {
1479: my ($udom,@ids)=@_;
1480: my %returnhash=();
1481:
1482: my %servers = &get_servers($udom,'library');
1483: foreach my $tryserver (keys(%servers)) {
1484: my $idlist=join('&',@ids);
1485: $idlist=~tr/A-Z/a-z/;
1486: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1487: my @answer=();
1488: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1489: @answer=split(/\&/,$reply);
1490: } ;
1491: my $i;
1492: for ($i=0;$i<=$#ids;$i++) {
1493: if ($answer[$i]) {
1494: $returnhash{$ids[$i]}=$answer[$i];
1495: }
1496: }
1497: }
1498: return %returnhash;
1499: }
1500:
1501: # ------------------------------------- Find the IDs behind a list of usernames
1502:
1503: sub idrget {
1504: my ($udom,@unames)=@_;
1505: my %returnhash=();
1506: foreach my $uname (@unames) {
1507: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1508: }
1509: return %returnhash;
1510: }
1511:
1512: # ------------------------------- Store away a list of names and associated IDs
1513:
1514: sub idput {
1515: my ($udom,%ids)=@_;
1516: my %servers=();
1517: foreach my $uname (keys(%ids)) {
1518: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1519: my $uhom=&homeserver($uname,$udom);
1520: if ($uhom ne 'no_host') {
1521: my $id=&escape($ids{$uname});
1522: $id=~tr/A-Z/a-z/;
1523: my $esc_unam=&escape($uname);
1524: if ($servers{$uhom}) {
1525: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1526: } else {
1527: $servers{$uhom}=$id.'='.$esc_unam;
1528: }
1529: }
1530: }
1531: foreach my $server (keys(%servers)) {
1532: &critical('idput:'.$udom.':'.$servers{$server},$server);
1533: }
1534: }
1535:
1536: # ------------------------------dump from db file owned by domainconfig user
1537: sub dump_dom {
1538: my ($namespace, $udom, $regexp) = @_;
1539:
1540: $udom ||= $env{'user.domain'};
1541:
1542: return () unless $udom;
1543:
1544: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1545: }
1546:
1547: # ------------------------------------------ get items from domain db files
1548:
1549: sub get_dom {
1550: my ($namespace,$storearr,$udom,$uhome)=@_;
1551: my $items='';
1552: foreach my $item (@$storearr) {
1553: $items.=&escape($item).'&';
1554: }
1555: $items=~s/\&$//;
1556: if (!$udom) {
1557: $udom=$env{'user.domain'};
1558: if (defined(&domain($udom,'primary'))) {
1559: $uhome=&domain($udom,'primary');
1560: } else {
1561: undef($uhome);
1562: }
1563: } else {
1564: if (!$uhome) {
1565: if (defined(&domain($udom,'primary'))) {
1566: $uhome=&domain($udom,'primary');
1567: }
1568: }
1569: }
1570: if ($udom && $uhome && ($uhome ne 'no_host')) {
1571: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1572: my %returnhash;
1573: if ($rep eq '' || $rep =~ /^error: 2 /) {
1574: return %returnhash;
1575: }
1576: my @pairs=split(/\&/,$rep);
1577: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1578: return @pairs;
1579: }
1580: my $i=0;
1581: foreach my $item (@$storearr) {
1582: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1583: $i++;
1584: }
1585: return %returnhash;
1586: } else {
1587: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1588: }
1589: }
1590:
1591: # -------------------------------------------- put items in domain db files
1592:
1593: sub put_dom {
1594: my ($namespace,$storehash,$udom,$uhome)=@_;
1595: if (!$udom) {
1596: $udom=$env{'user.domain'};
1597: if (defined(&domain($udom,'primary'))) {
1598: $uhome=&domain($udom,'primary');
1599: } else {
1600: undef($uhome);
1601: }
1602: } else {
1603: if (!$uhome) {
1604: if (defined(&domain($udom,'primary'))) {
1605: $uhome=&domain($udom,'primary');
1606: }
1607: }
1608: }
1609: if ($udom && $uhome && ($uhome ne 'no_host')) {
1610: my $items='';
1611: foreach my $item (keys(%$storehash)) {
1612: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1613: }
1614: $items=~s/\&$//;
1615: return &reply("putdom:$udom:$namespace:$items",$uhome);
1616: } else {
1617: &logthis("put_dom failed - no homeserver and/or domain");
1618: }
1619: }
1620:
1621: # --------------------- newput for items in db file owned by domainconfig user
1622: sub newput_dom {
1623: my ($namespace,$storehash,$udom) = @_;
1624: my $result;
1625: if (!$udom) {
1626: $udom=$env{'user.domain'};
1627: }
1628: if ($udom) {
1629: my $uname = &get_domainconfiguser($udom);
1630: $result = &newput($namespace,$storehash,$udom,$uname);
1631: }
1632: return $result;
1633: }
1634:
1635: # --------------------- delete for items in db file owned by domainconfig user
1636: sub del_dom {
1637: my ($namespace,$storearr,$udom)=@_;
1638: if (ref($storearr) eq 'ARRAY') {
1639: if (!$udom) {
1640: $udom=$env{'user.domain'};
1641: }
1642: if ($udom) {
1643: my $uname = &get_domainconfiguser($udom);
1644: return &del($namespace,$storearr,$udom,$uname);
1645: }
1646: }
1647: }
1648:
1649: # ----------------------------------construct domainconfig user for a domain
1650: sub get_domainconfiguser {
1651: my ($udom) = @_;
1652: return $udom.'-domainconfig';
1653: }
1654:
1655: sub retrieve_inst_usertypes {
1656: my ($udom) = @_;
1657: my (%returnhash,@order);
1658: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1659: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1660: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1661: %returnhash = %{$domdefs{'inststatustypes'}};
1662: @order = @{$domdefs{'inststatusorder'}};
1663: } else {
1664: if (defined(&domain($udom,'primary'))) {
1665: my $uhome=&domain($udom,'primary');
1666: my $rep=&reply("inst_usertypes:$udom",$uhome);
1667: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1668: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1669: return (\%returnhash,\@order);
1670: }
1671: my ($hashitems,$orderitems) = split(/:/,$rep);
1672: my @pairs=split(/\&/,$hashitems);
1673: foreach my $item (@pairs) {
1674: my ($key,$value)=split(/=/,$item,2);
1675: $key = &unescape($key);
1676: next if ($key =~ /^error: 2 /);
1677: $returnhash{$key}=&thaw_unescape($value);
1678: }
1679: my @esc_order = split(/\&/,$orderitems);
1680: foreach my $item (@esc_order) {
1681: push(@order,&unescape($item));
1682: }
1683: } else {
1684: &logthis("get_dom failed - no primary domain server for $udom");
1685: }
1686: }
1687: return (\%returnhash,\@order);
1688: }
1689:
1690: sub is_domainimage {
1691: my ($url) = @_;
1692: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1693: if (&domain($1) ne '') {
1694: return '1';
1695: }
1696: }
1697: return;
1698: }
1699:
1700: sub inst_directory_query {
1701: my ($srch) = @_;
1702: my $udom = $srch->{'srchdomain'};
1703: my %results;
1704: my $homeserver = &domain($udom,'primary');
1705: my $outcome;
1706: if ($homeserver ne '') {
1707: my $queryid=&reply("querysend:instdirsearch:".
1708: &escape($srch->{'srchby'}).':'.
1709: &escape($srch->{'srchterm'}).':'.
1710: &escape($srch->{'srchtype'}),$homeserver);
1711: my $host=&hostname($homeserver);
1712: if ($queryid !~/^\Q$host\E\_/) {
1713: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1714: return;
1715: }
1716: my $response = &get_query_reply($queryid);
1717: my $maxtries = 5;
1718: my $tries = 1;
1719: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1720: $response = &get_query_reply($queryid);
1721: $tries ++;
1722: }
1723:
1724: if (!&error($response) && $response ne 'refused') {
1725: if ($response eq 'unavailable') {
1726: $outcome = $response;
1727: } else {
1728: $outcome = 'ok';
1729: my @matches = split(/\n/,$response);
1730: foreach my $match (@matches) {
1731: my ($key,$value) = split(/=/,$match);
1732: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1733: }
1734: }
1735: }
1736: }
1737: return ($outcome,%results);
1738: }
1739:
1740: sub usersearch {
1741: my ($srch) = @_;
1742: my $dom = $srch->{'srchdomain'};
1743: my %results;
1744: my %libserv = &all_library();
1745: my $query = 'usersearch';
1746: foreach my $tryserver (keys(%libserv)) {
1747: if (&host_domain($tryserver) eq $dom) {
1748: my $host=&hostname($tryserver);
1749: my $queryid=
1750: &reply("querysend:".&escape($query).':'.
1751: &escape($srch->{'srchby'}).':'.
1752: &escape($srch->{'srchtype'}).':'.
1753: &escape($srch->{'srchterm'}),$tryserver);
1754: if ($queryid !~/^\Q$host\E\_/) {
1755: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1756: next;
1757: }
1758: my $reply = &get_query_reply($queryid);
1759: my $maxtries = 1;
1760: my $tries = 1;
1761: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1762: $reply = &get_query_reply($queryid);
1763: $tries ++;
1764: }
1765: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1766: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1767: } else {
1768: my @matches;
1769: if ($reply =~ /\n/) {
1770: @matches = split(/\n/,$reply);
1771: } else {
1772: @matches = split(/\&/,$reply);
1773: }
1774: foreach my $match (@matches) {
1775: my ($uname,$udom,%userhash);
1776: foreach my $entry (split(/:/,$match)) {
1777: my ($key,$value) =
1778: map {&unescape($_);} split(/=/,$entry);
1779: $userhash{$key} = $value;
1780: if ($key eq 'username') {
1781: $uname = $value;
1782: } elsif ($key eq 'domain') {
1783: $udom = $value;
1784: }
1785: }
1786: $results{$uname.':'.$udom} = \%userhash;
1787: }
1788: }
1789: }
1790: }
1791: return %results;
1792: }
1793:
1794: sub get_instuser {
1795: my ($udom,$uname,$id) = @_;
1796: my $homeserver = &domain($udom,'primary');
1797: my ($outcome,%results);
1798: if ($homeserver ne '') {
1799: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1800: &escape($id).':'.&escape($udom),$homeserver);
1801: my $host=&hostname($homeserver);
1802: if ($queryid !~/^\Q$host\E\_/) {
1803: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1804: return;
1805: }
1806: my $response = &get_query_reply($queryid);
1807: my $maxtries = 5;
1808: my $tries = 1;
1809: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1810: $response = &get_query_reply($queryid);
1811: $tries ++;
1812: }
1813: if (!&error($response) && $response ne 'refused') {
1814: if ($response eq 'unavailable') {
1815: $outcome = $response;
1816: } else {
1817: $outcome = 'ok';
1818: my @matches = split(/\n/,$response);
1819: foreach my $match (@matches) {
1820: my ($key,$value) = split(/=/,$match);
1821: $results{&unescape($key)} = &thaw_unescape($value);
1822: }
1823: }
1824: }
1825: }
1826: my %userinfo;
1827: if (ref($results{$uname}) eq 'HASH') {
1828: %userinfo = %{$results{$uname}};
1829: }
1830: return ($outcome,%userinfo);
1831: }
1832:
1833: sub inst_rulecheck {
1834: my ($udom,$uname,$id,$item,$rules) = @_;
1835: my %returnhash;
1836: if ($udom ne '') {
1837: if (ref($rules) eq 'ARRAY') {
1838: @{$rules} = map {&escape($_);} (@{$rules});
1839: my $rulestr = join(':',@{$rules});
1840: my $homeserver=&domain($udom,'primary');
1841: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1842: my $response;
1843: if ($item eq 'username') {
1844: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1845: ':'.&escape($uname).':'.$rulestr,
1846: $homeserver));
1847: } elsif ($item eq 'id') {
1848: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1849: ':'.&escape($id).':'.$rulestr,
1850: $homeserver));
1851: } elsif ($item eq 'selfcreate') {
1852: $response=&unescape(&reply('instselfcreatecheck:'.
1853: &escape($udom).':'.&escape($uname).
1854: ':'.$rulestr,$homeserver));
1855: }
1856: if ($response ne 'refused') {
1857: my @pairs=split(/\&/,$response);
1858: foreach my $item (@pairs) {
1859: my ($key,$value)=split(/=/,$item,2);
1860: $key = &unescape($key);
1861: next if ($key =~ /^error: 2 /);
1862: $returnhash{$key}=&thaw_unescape($value);
1863: }
1864: }
1865: }
1866: }
1867: }
1868: return %returnhash;
1869: }
1870:
1871: sub inst_userrules {
1872: my ($udom,$check) = @_;
1873: my (%ruleshash,@ruleorder);
1874: if ($udom ne '') {
1875: my $homeserver=&domain($udom,'primary');
1876: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1877: my $response;
1878: if ($check eq 'id') {
1879: $response=&reply('instidrules:'.&escape($udom),
1880: $homeserver);
1881: } elsif ($check eq 'email') {
1882: $response=&reply('instemailrules:'.&escape($udom),
1883: $homeserver);
1884: } else {
1885: $response=&reply('instuserrules:'.&escape($udom),
1886: $homeserver);
1887: }
1888: if (($response ne 'refused') && ($response ne 'error') &&
1889: ($response ne 'unknown_cmd') &&
1890: ($response ne 'no_such_host')) {
1891: my ($hashitems,$orderitems) = split(/:/,$response);
1892: my @pairs=split(/\&/,$hashitems);
1893: foreach my $item (@pairs) {
1894: my ($key,$value)=split(/=/,$item,2);
1895: $key = &unescape($key);
1896: next if ($key =~ /^error: 2 /);
1897: $ruleshash{$key}=&thaw_unescape($value);
1898: }
1899: my @esc_order = split(/\&/,$orderitems);
1900: foreach my $item (@esc_order) {
1901: push(@ruleorder,&unescape($item));
1902: }
1903: }
1904: }
1905: }
1906: return (\%ruleshash,\@ruleorder);
1907: }
1908:
1909: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1910:
1911: sub get_domain_defaults {
1912: my ($domain) = @_;
1913: my $cachetime = 60*60*24;
1914: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1915: if (defined($cached)) {
1916: if (ref($result) eq 'HASH') {
1917: return %{$result};
1918: }
1919: }
1920: my %domdefaults;
1921: my %domconfig =
1922: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1923: 'requestcourses','inststatus',
1924: 'coursedefaults','usersessions'],$domain);
1925: if (ref($domconfig{'defaults'}) eq 'HASH') {
1926: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1927: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1928: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1929: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1930: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1931: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1932: } else {
1933: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1934: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1935: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1936: }
1937: if (ref($domconfig{'quotas'}) eq 'HASH') {
1938: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1939: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1940: } else {
1941: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1942: }
1943: my @usertools = ('aboutme','blog','portfolio');
1944: foreach my $item (@usertools) {
1945: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1946: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1947: }
1948: }
1949: }
1950: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1951: foreach my $item ('official','unofficial','community') {
1952: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1953: }
1954: }
1955: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1956: foreach my $item ('inststatustypes','inststatusorder') {
1957: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1958: }
1959: }
1960: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1961: foreach my $item ('canuse_pdfforms') {
1962: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1963: }
1964: }
1965: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1966: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1967: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1968: }
1969: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1970: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1971: }
1972: }
1973: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1974: $cachetime);
1975: return %domdefaults;
1976: }
1977:
1978: # --------------------------------------------------- Assign a key to a student
1979:
1980: sub assign_access_key {
1981: #
1982: # a valid key looks like uname:udom#comments
1983: # comments are being appended
1984: #
1985: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1986: $kdom=
1987: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1988: $knum=
1989: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1990: $cdom=
1991: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1992: $cnum=
1993: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1994: $udom=$env{'user.name'} unless (defined($udom));
1995: $uname=$env{'user.domain'} unless (defined($uname));
1996: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1997: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1998: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1999: # assigned to this person
2000: # - this should not happen,
2001: # unless something went wrong
2002: # the first time around
2003: # ready to assign
2004: $logentry=$1.'; '.$logentry;
2005: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2006: $kdom,$knum) eq 'ok') {
2007: # key now belongs to user
2008: my $envkey='key.'.$cdom.'_'.$cnum;
2009: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2010: &appenv({'environment.'.$envkey => $ckey});
2011: return 'ok';
2012: } else {
2013: return
2014: 'error: Count not permanently assign key, will need to be re-entered later.';
2015: }
2016: } else {
2017: return 'error: Could not assign key, try again later.';
2018: }
2019: } elsif (!$existing{$ckey}) {
2020: # the key does not exist
2021: return 'error: The key does not exist';
2022: } else {
2023: # the key is somebody else's
2024: return 'error: The key is already in use';
2025: }
2026: }
2027:
2028: # ------------------------------------------ put an additional comment on a key
2029:
2030: sub comment_access_key {
2031: #
2032: # a valid key looks like uname:udom#comments
2033: # comments are being appended
2034: #
2035: my ($ckey,$cdom,$cnum,$logentry)=@_;
2036: $cdom=
2037: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2038: $cnum=
2039: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2040: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2041: if ($existing{$ckey}) {
2042: $existing{$ckey}.='; '.$logentry;
2043: # ready to assign
2044: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2045: $cdom,$cnum) eq 'ok') {
2046: return 'ok';
2047: } else {
2048: return 'error: Count not store comment.';
2049: }
2050: } else {
2051: # the key does not exist
2052: return 'error: The key does not exist';
2053: }
2054: }
2055:
2056: # ------------------------------------------------------ Generate a set of keys
2057:
2058: sub generate_access_keys {
2059: my ($number,$cdom,$cnum,$logentry)=@_;
2060: $cdom=
2061: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2062: $cnum=
2063: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2064: unless (&allowed('mky',$cdom)) { return 0; }
2065: unless (($cdom) && ($cnum)) { return 0; }
2066: if ($number>10000) { return 0; }
2067: sleep(2); # make sure don't get same seed twice
2068: srand(time()^($$+($$<<15))); # from "Programming Perl"
2069: my $total=0;
2070: for (my $i=1;$i<=$number;$i++) {
2071: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2072: sprintf("%lx",int(100000*rand)).'-'.
2073: sprintf("%lx",int(100000*rand));
2074: $newkey=~s/1/g/g; # folks mix up 1 and l
2075: $newkey=~s/0/h/g; # and also 0 and O
2076: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2077: if ($existing{$newkey}) {
2078: $i--;
2079: } else {
2080: if (&put('accesskeys',
2081: { $newkey => '# generated '.localtime().
2082: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2083: '; '.$logentry },
2084: $cdom,$cnum) eq 'ok') {
2085: $total++;
2086: }
2087: }
2088: }
2089: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2090: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2091: return $total;
2092: }
2093:
2094: # ------------------------------------------------------- Validate an accesskey
2095:
2096: sub validate_access_key {
2097: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2098: $cdom=
2099: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2100: $cnum=
2101: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2102: $udom=$env{'user.domain'} unless (defined($udom));
2103: $uname=$env{'user.name'} unless (defined($uname));
2104: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2105: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2106: }
2107:
2108: # ------------------------------------- Find the section of student in a course
2109: sub devalidate_getsection_cache {
2110: my ($udom,$unam,$courseid)=@_;
2111: my $hashid="$udom:$unam:$courseid";
2112: &devalidate_cache_new('getsection',$hashid);
2113: }
2114:
2115: sub courseid_to_courseurl {
2116: my ($courseid) = @_;
2117: #already url style courseid
2118: return $courseid if ($courseid =~ m{^/});
2119:
2120: if (exists($env{'course.'.$courseid.'.num'})) {
2121: my $cnum = $env{'course.'.$courseid.'.num'};
2122: my $cdom = $env{'course.'.$courseid.'.domain'};
2123: return "/$cdom/$cnum";
2124: }
2125:
2126: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2127: if (exists($courseinfo{'num'})) {
2128: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2129: }
2130:
2131: return undef;
2132: }
2133:
2134: sub getsection {
2135: my ($udom,$unam,$courseid)=@_;
2136: my $cachetime=1800;
2137:
2138: my $hashid="$udom:$unam:$courseid";
2139: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2140: if (defined($cached)) { return $result; }
2141:
2142: my %Pending;
2143: my %Expired;
2144: #
2145: # Each role can either have not started yet (pending), be active,
2146: # or have expired.
2147: #
2148: # If there is an active role, we are done.
2149: #
2150: # If there is more than one role which has not started yet,
2151: # choose the one which will start sooner
2152: # If there is one role which has not started yet, return it.
2153: #
2154: # If there is more than one expired role, choose the one which ended last.
2155: # If there is a role which has expired, return it.
2156: #
2157: $courseid = &courseid_to_courseurl($courseid);
2158: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2159: foreach my $key (keys(%roleshash)) {
2160: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2161: my $section=$1;
2162: if ($key eq $courseid.'_st') { $section=''; }
2163: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2164: my $now=time;
2165: if (defined($end) && $end && ($now > $end)) {
2166: $Expired{$end}=$section;
2167: next;
2168: }
2169: if (defined($start) && $start && ($now < $start)) {
2170: $Pending{$start}=$section;
2171: next;
2172: }
2173: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2174: }
2175: #
2176: # Presumedly there will be few matching roles from the above
2177: # loop and the sorting time will be negligible.
2178: if (scalar(keys(%Pending))) {
2179: my ($time) = sort {$a <=> $b} keys(%Pending);
2180: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2181: }
2182: if (scalar(keys(%Expired))) {
2183: my @sorted = sort {$a <=> $b} keys(%Expired);
2184: my $time = pop(@sorted);
2185: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2186: }
2187: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2188: }
2189:
2190: sub save_cache {
2191: &purge_remembered();
2192: #&Apache::loncommon::validate_page();
2193: undef(%env);
2194: undef($env_loaded);
2195: }
2196:
2197: my $to_remember=-1;
2198: my %remembered;
2199: my %accessed;
2200: my $kicks=0;
2201: my $hits=0;
2202: sub make_key {
2203: my ($name,$id) = @_;
2204: if (length($id) > 65
2205: && length(&escape($id)) > 200) {
2206: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2207: }
2208: return &escape($name.':'.$id);
2209: }
2210:
2211: sub devalidate_cache_new {
2212: my ($name,$id,$debug) = @_;
2213: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2214: $id=&make_key($name,$id);
2215: $memcache->delete($id);
2216: delete($remembered{$id});
2217: delete($accessed{$id});
2218: }
2219:
2220: sub is_cached_new {
2221: my ($name,$id,$debug) = @_;
2222: $id=&make_key($name,$id);
2223: if (exists($remembered{$id})) {
2224: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2225: $accessed{$id}=[&gettimeofday()];
2226: $hits++;
2227: return ($remembered{$id},1);
2228: }
2229: my $value = $memcache->get($id);
2230: if (!(defined($value))) {
2231: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2232: return (undef,undef);
2233: }
2234: if ($value eq '__undef__') {
2235: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2236: $value=undef;
2237: }
2238: &make_room($id,$value,$debug);
2239: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2240: return ($value,1);
2241: }
2242:
2243: sub do_cache_new {
2244: my ($name,$id,$value,$time,$debug) = @_;
2245: $id=&make_key($name,$id);
2246: my $setvalue=$value;
2247: if (!defined($setvalue)) {
2248: $setvalue='__undef__';
2249: }
2250: if (!defined($time) ) {
2251: $time=600;
2252: }
2253: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2254: my $result = $memcache->set($id,$setvalue,$time);
2255: if (! $result) {
2256: &logthis("caching of id -> $id failed");
2257: $memcache->disconnect_all();
2258: }
2259: # need to make a copy of $value
2260: &make_room($id,$value,$debug);
2261: return $value;
2262: }
2263:
2264: sub make_room {
2265: my ($id,$value,$debug)=@_;
2266:
2267: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2268: : $value;
2269: if ($to_remember<0) { return; }
2270: $accessed{$id}=[&gettimeofday()];
2271: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2272: my $to_kick;
2273: my $max_time=0;
2274: foreach my $other (keys(%accessed)) {
2275: if (&tv_interval($accessed{$other}) > $max_time) {
2276: $to_kick=$other;
2277: $max_time=&tv_interval($accessed{$other});
2278: }
2279: }
2280: delete($remembered{$to_kick});
2281: delete($accessed{$to_kick});
2282: $kicks++;
2283: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2284: return;
2285: }
2286:
2287: sub purge_remembered {
2288: #&logthis("Tossing ".scalar(keys(%remembered)));
2289: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2290: undef(%remembered);
2291: undef(%accessed);
2292: }
2293: # ------------------------------------- Read an entry from a user's environment
2294:
2295: sub userenvironment {
2296: my ($udom,$unam,@what)=@_;
2297: my $items;
2298: foreach my $item (@what) {
2299: $items.=&escape($item).'&';
2300: }
2301: $items=~s/\&$//;
2302: my %returnhash=();
2303: my $uhome = &homeserver($unam,$udom);
2304: unless ($uhome eq 'no_host') {
2305: my @answer=split(/\&/,
2306: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2307: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2308: return %returnhash;
2309: }
2310: my $i;
2311: for ($i=0;$i<=$#what;$i++) {
2312: $returnhash{$what[$i]}=&unescape($answer[$i]);
2313: }
2314: }
2315: return %returnhash;
2316: }
2317:
2318: # ---------------------------------------------------------- Get a studentphoto
2319: sub studentphoto {
2320: my ($udom,$unam,$ext) = @_;
2321: my $home=&Apache::lonnet::homeserver($unam,$udom);
2322: if (defined($env{'request.course.id'})) {
2323: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2324: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2325: return(&retrievestudentphoto($udom,$unam,$ext));
2326: } else {
2327: my ($result,$perm_reqd)=
2328: &Apache::lonnet::auto_photo_permission($unam,$udom);
2329: if ($result eq 'ok') {
2330: if (!($perm_reqd eq 'yes')) {
2331: return(&retrievestudentphoto($udom,$unam,$ext));
2332: }
2333: }
2334: }
2335: }
2336: } else {
2337: my ($result,$perm_reqd) =
2338: &Apache::lonnet::auto_photo_permission($unam,$udom);
2339: if ($result eq 'ok') {
2340: if (!($perm_reqd eq 'yes')) {
2341: return(&retrievestudentphoto($udom,$unam,$ext));
2342: }
2343: }
2344: }
2345: return '/adm/lonKaputt/lonlogo_broken.gif';
2346: }
2347:
2348: sub retrievestudentphoto {
2349: my ($udom,$unam,$ext,$type) = @_;
2350: my $home=&Apache::lonnet::homeserver($unam,$udom);
2351: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2352: if ($ret eq 'ok') {
2353: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2354: if ($type eq 'thumbnail') {
2355: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2356: }
2357: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2358: return $tokenurl;
2359: } else {
2360: if ($type eq 'thumbnail') {
2361: return '/adm/lonKaputt/genericstudent_tn.gif';
2362: } else {
2363: return '/adm/lonKaputt/lonlogo_broken.gif';
2364: }
2365: }
2366: }
2367:
2368: # -------------------------------------------------------------------- New chat
2369:
2370: sub chatsend {
2371: my ($newentry,$anon,$group)=@_;
2372: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2373: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2374: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2375: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2376: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2377: &escape($newentry)).':'.$group,$chome);
2378: }
2379:
2380: # ------------------------------------------ Find current version of a resource
2381:
2382: sub getversion {
2383: my $fname=&clutter(shift);
2384: unless ($fname=~/^\/res\//) { return -1; }
2385: return ¤tversion(&filelocation('',$fname));
2386: }
2387:
2388: sub currentversion {
2389: my $fname=shift;
2390: my $author=$fname;
2391: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2392: my ($udom,$uname)=split(/\//,$author);
2393: my $home=&homeserver($uname,$udom);
2394: if ($home eq 'no_host') {
2395: return -1;
2396: }
2397: my $answer=&reply("currentversion:$fname",$home);
2398: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2399: return -1;
2400: }
2401: return $answer;
2402: }
2403:
2404: #
2405: # Return special version number of resource if set by override, empty otherwise
2406: #
2407: sub usedversion {
2408: my $fname=shift;
2409: unless ($fname) { $fname=$env{'request.uri'}; }
2410: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2411: if ($urlversion) { return $urlversion; }
2412: return '';
2413: }
2414:
2415: # ----------------------------- Subscribe to a resource, return URL if possible
2416:
2417: sub subscribe {
2418: my $fname=shift;
2419: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2420: $fname=~s/[\n\r]//g;
2421: my $author=$fname;
2422: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2423: my ($udom,$uname)=split(/\//,$author);
2424: my $home=homeserver($uname,$udom);
2425: if ($home eq 'no_host') {
2426: return 'not_found';
2427: }
2428: my $answer=reply("sub:$fname",$home);
2429: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2430: $answer.=' by '.$home;
2431: }
2432: return $answer;
2433: }
2434:
2435: # -------------------------------------------------------------- Replicate file
2436:
2437: sub repcopy {
2438: my $filename=shift;
2439: $filename=~s/\/+/\//g;
2440: my $londocroot = $perlvar{'lonDocRoot'};
2441: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2442: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2443: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2444: $filename=~m{^/*(uploaded|editupload)/}) {
2445: return &repcopy_userfile($filename);
2446: }
2447: $filename=~s/[\n\r]//g;
2448: my $transname="$filename.in.transfer";
2449: # FIXME: this should flock
2450: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2451: my $remoteurl=subscribe($filename);
2452: if ($remoteurl =~ /^con_lost by/) {
2453: &logthis("Subscribe returned $remoteurl: $filename");
2454: return 'unavailable';
2455: } elsif ($remoteurl eq 'not_found') {
2456: #&logthis("Subscribe returned not_found: $filename");
2457: return 'not_found';
2458: } elsif ($remoteurl =~ /^rejected by/) {
2459: &logthis("Subscribe returned $remoteurl: $filename");
2460: return 'forbidden';
2461: } elsif ($remoteurl eq 'directory') {
2462: return 'ok';
2463: } else {
2464: my $author=$filename;
2465: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2466: my ($udom,$uname)=split(/\//,$author);
2467: my $home=homeserver($uname,$udom);
2468: unless ($home eq $perlvar{'lonHostID'}) {
2469: my @parts=split(/\//,$filename);
2470: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2471: if ($path ne "$londocroot/res") {
2472: &logthis("Malconfiguration for replication: $filename");
2473: return 'bad_request';
2474: }
2475: my $count;
2476: for ($count=5;$count<$#parts;$count++) {
2477: $path.="/$parts[$count]";
2478: if ((-e $path)!=1) {
2479: mkdir($path,0777);
2480: }
2481: }
2482: my $ua=new LWP::UserAgent;
2483: my $request=new HTTP::Request('GET',"$remoteurl");
2484: my $response=$ua->request($request,$transname);
2485: if ($response->is_error()) {
2486: unlink($transname);
2487: my $message=$response->status_line;
2488: &logthis("<font color=\"blue\">WARNING:"
2489: ." LWP get: $message: $filename</font>");
2490: return 'unavailable';
2491: } else {
2492: if ($remoteurl!~/\.meta$/) {
2493: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2494: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2495: if ($mresponse->is_error()) {
2496: unlink($filename.'.meta');
2497: &logthis(
2498: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2499: }
2500: }
2501: rename($transname,$filename);
2502: return 'ok';
2503: }
2504: }
2505: }
2506: }
2507:
2508: # ------------------------------------------------ Get server side include body
2509: sub ssi_body {
2510: my ($filelink,%form)=@_;
2511: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2512: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2513: }
2514: my $output='';
2515: my $response;
2516: if ($filelink=~/^https?\:/) {
2517: ($output,$response)=&externalssi($filelink);
2518: } else {
2519: $filelink .= $filelink=~/\?/ ? '&' : '?';
2520: $filelink .= 'inhibitmenu=yes';
2521: ($output,$response)=&ssi($filelink,%form);
2522: }
2523: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2524: $output=~s/^.*?\<body[^\>]*\>//si;
2525: $output=~s/\<\/body\s*\>.*?$//si;
2526: if (wantarray) {
2527: return ($output, $response);
2528: } else {
2529: return $output;
2530: }
2531: }
2532:
2533: # --------------------------------------------------------- Server Side Include
2534:
2535: sub absolute_url {
2536: my ($host_name) = @_;
2537: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2538: if ($host_name eq '') {
2539: $host_name = $ENV{'SERVER_NAME'};
2540: }
2541: return $protocol.$host_name;
2542: }
2543:
2544: #
2545: # Server side include.
2546: # Parameters:
2547: # fn Possibly encrypted resource name/id.
2548: # form Hash that describes how the rendering should be done
2549: # and other things.
2550: # Returns:
2551: # Scalar context: The content of the response.
2552: # Array context: 2 element list of the content and the full response object.
2553: #
2554: sub ssi {
2555:
2556: my ($fn,%form)=@_;
2557: my $ua=new LWP::UserAgent;
2558: my $request;
2559:
2560: $form{'no_update_last_known'}=1;
2561: &Apache::lonenc::check_encrypt(\$fn);
2562: if (%form) {
2563: $request=new HTTP::Request('POST',&absolute_url().$fn);
2564: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2565: } else {
2566: $request=new HTTP::Request('GET',&absolute_url().$fn);
2567: }
2568:
2569: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2570: my $response=$ua->request($request);
2571:
2572: if (wantarray) {
2573: return ($response->content, $response);
2574: } else {
2575: return $response->content;
2576: }
2577: }
2578:
2579: sub externalssi {
2580: my ($url)=@_;
2581: my $ua=new LWP::UserAgent;
2582: my $request=new HTTP::Request('GET',$url);
2583: my $response=$ua->request($request);
2584: if (wantarray) {
2585: return ($response->content, $response);
2586: } else {
2587: return $response->content;
2588: }
2589: }
2590:
2591: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2592:
2593: sub allowuploaded {
2594: my ($srcurl,$url)=@_;
2595: $url=&clutter(&declutter($url));
2596: my $dir=$url;
2597: $dir=~s/\/[^\/]+$//;
2598: my %httpref=();
2599: my $httpurl=&hreflocation('',$url);
2600: $httpref{'httpref.'.$httpurl}=$srcurl;
2601: &Apache::lonnet::appenv(\%httpref);
2602: }
2603:
2604: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2605: # input: action, courseID, current domain, intended
2606: # path to file, source of file, instruction to parse file for objects,
2607: # ref to hash for embedded objects,
2608: # ref to hash for codebase of java objects.
2609: # reference to scalar to accommodate mime type determined
2610: # from File::MMagic if $parser = parse.
2611: #
2612: # output: url to file (if action was uploaddoc),
2613: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2614: #
2615: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2616: # course.
2617: #
2618: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2619: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2620: # course's home server.
2621: #
2622: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2623: # be copied from $source (current location) to
2624: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2625: # and will then be copied to
2626: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2627: # course's home server.
2628: #
2629: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2630: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2631: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2632: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2633: # in course's home server.
2634: #
2635:
2636: sub process_coursefile {
2637: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2638: $mimetype)=@_;
2639: my $fetchresult;
2640: my $home=&homeserver($docuname,$docudom);
2641: if ($action eq 'propagate') {
2642: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2643: $home);
2644: } else {
2645: my $fpath = '';
2646: my $fname = $file;
2647: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2648: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2649: my $filepath = &build_filepath($fpath);
2650: if ($action eq 'copy') {
2651: if ($source eq '') {
2652: $fetchresult = 'no source file';
2653: return $fetchresult;
2654: } else {
2655: my $destination = $filepath.'/'.$fname;
2656: rename($source,$destination);
2657: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2658: $home);
2659: }
2660: } elsif ($action eq 'uploaddoc') {
2661: open(my $fh,'>'.$filepath.'/'.$fname);
2662: print $fh $env{'form.'.$source};
2663: close($fh);
2664: if ($parser eq 'parse') {
2665: my $mm = new File::MMagic;
2666: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2667: if ($type eq 'text/html') {
2668: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2669: unless ($parse_result eq 'ok') {
2670: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2671: }
2672: }
2673: if (ref($mimetype)) {
2674: $$mimetype = $type;
2675: }
2676: }
2677: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2678: $home);
2679: if ($fetchresult eq 'ok') {
2680: return '/uploaded/'.$fpath.'/'.$fname;
2681: } else {
2682: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2683: ' to host '.$home.': '.$fetchresult);
2684: return '/adm/notfound.html';
2685: }
2686: }
2687: }
2688: unless ( $fetchresult eq 'ok') {
2689: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2690: ' to host '.$home.': '.$fetchresult);
2691: }
2692: return $fetchresult;
2693: }
2694:
2695: sub build_filepath {
2696: my ($fpath) = @_;
2697: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2698: unless ($fpath eq '') {
2699: my @parts=split('/',$fpath);
2700: foreach my $part (@parts) {
2701: $filepath.= '/'.$part;
2702: if ((-e $filepath)!=1) {
2703: mkdir($filepath,0777);
2704: }
2705: }
2706: }
2707: return $filepath;
2708: }
2709:
2710: sub store_edited_file {
2711: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2712: my $file = $primary_url;
2713: $file =~ s#^/uploaded/$docudom/$docuname/##;
2714: my $fpath = '';
2715: my $fname = $file;
2716: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2717: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2718: my $filepath = &build_filepath($fpath);
2719: open(my $fh,'>'.$filepath.'/'.$fname);
2720: print $fh $content;
2721: close($fh);
2722: my $home=&homeserver($docuname,$docudom);
2723: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2724: $home);
2725: if ($$fetchresult eq 'ok') {
2726: return '/uploaded/'.$fpath.'/'.$fname;
2727: } else {
2728: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2729: ' to host '.$home.': '.$$fetchresult);
2730: return '/adm/notfound.html';
2731: }
2732: }
2733:
2734: sub clean_filename {
2735: my ($fname,$args)=@_;
2736: # Replace Windows backslashes by forward slashes
2737: $fname=~s/\\/\//g;
2738: if (!$args->{'keep_path'}) {
2739: # Get rid of everything but the actual filename
2740: $fname=~s/^.*\/([^\/]+)$/$1/;
2741: }
2742: # Replace spaces by underscores
2743: $fname=~s/\s+/\_/g;
2744: # Replace all other weird characters by nothing
2745: $fname=~s{[^/\w\.\-]}{}g;
2746: # Replace all .\d. sequences with _\d. so they no longer look like version
2747: # numbers
2748: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2749: return $fname;
2750: }
2751: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2752: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2753: # image with the same aspect ratio as the original, but with dimensions which do
2754: # not exceed $resizewidth and $resizeheight.
2755:
2756: sub resizeImage {
2757: my ($img_path,$resizewidth,$resizeheight) = @_;
2758: my $ima = Image::Magick->new;
2759: my $resized;
2760: if (-e $img_path) {
2761: $ima->Read($img_path);
2762: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2763: my $width = $ima->Get('width');
2764: my $height = $ima->Get('height');
2765: if ($width > $resizewidth) {
2766: my $factor = $width/$resizewidth;
2767: my $newheight = $height/$factor;
2768: $ima->Scale(width=>$resizewidth,height=>$newheight);
2769: $resized = 1;
2770: }
2771: }
2772: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2773: my $width = $ima->Get('width');
2774: my $height = $ima->Get('height');
2775: if ($height > $resizeheight) {
2776: my $factor = $height/$resizeheight;
2777: my $newwidth = $width/$factor;
2778: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2779: $resized = 1;
2780: }
2781: }
2782: if ($resized) {
2783: $ima->Write($img_path);
2784: }
2785: }
2786: return;
2787: }
2788:
2789: # --------------- Take an uploaded file and put it into the userfiles directory
2790: # input: $formname - the contents of the file are in $env{"form.$formname"}
2791: # the desired filename is in $env{"form.$formname.filename"}
2792: # $context - possible values: coursedoc, existingfile, overwrite,
2793: # canceloverwrite, or ''.
2794: # if 'coursedoc': upload to the current course
2795: # if 'existingfile': write file to tmp/overwrites directory
2796: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2797: # $context is passed as argument to &finishuserfileupload
2798: # $subdir - directory in userfile to store the file into
2799: # $parser - instruction to parse file for objects ($parser = parse)
2800: # $allfiles - reference to hash for embedded objects
2801: # $codebase - reference to hash for codebase of java objects
2802: # $desuname - username for permanent storage of uploaded file
2803: # $dsetudom - domain for permanaent storage of uploaded file
2804: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2805: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2806: # $resizewidth - width (pixels) to which to resize uploaded image
2807: # $resizeheight - height (pixels) to which to resize uploaded image
2808: # $mimetype - reference to scalar to accommodate mime type determined
2809: # from File::MMagic.
2810: #
2811: # output: url of file in userspace, or error: <message>
2812: # or /adm/notfound.html if failure to upload occurse
2813:
2814: sub userfileupload {
2815: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2816: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2817: if (!defined($subdir)) { $subdir='unknown'; }
2818: my $fname=$env{'form.'.$formname.'.filename'};
2819: $fname=&clean_filename($fname);
2820: # See if there is anything left
2821: unless ($fname) { return 'error: no uploaded file'; }
2822: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2823: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2824: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2825: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2826: my $now = time;
2827: my $filepath;
2828: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2829: $filepath = 'tmp/helprequests/'.$now;
2830: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2831: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2832: '_'.$env{'user.domain'}.'/pending';
2833: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2834: my ($docuname,$docudom);
2835: if ($destudom) {
2836: $docudom = $destudom;
2837: } else {
2838: $docudom = $env{'user.domain'};
2839: }
2840: if ($destuname) {
2841: $docuname = $destuname;
2842: } else {
2843: $docuname = $env{'user.name'};
2844: }
2845: if (exists($env{'form.group'})) {
2846: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2847: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2848: }
2849: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2850: if ($context eq 'canceloverwrite') {
2851: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2852: if (-e $tempfile) {
2853: my @info = stat($tempfile);
2854: if ($info[9] eq $env{'form.timestamp'}) {
2855: unlink($tempfile);
2856: }
2857: }
2858: return;
2859: }
2860: }
2861: # Create the directory if not present
2862: my @parts=split(/\//,$filepath);
2863: my $fullpath = $perlvar{'lonDaemons'};
2864: for (my $i=0;$i<@parts;$i++) {
2865: $fullpath .= '/'.$parts[$i];
2866: if ((-e $fullpath)!=1) {
2867: mkdir($fullpath,0777);
2868: }
2869: }
2870: open(my $fh,'>'.$fullpath.'/'.$fname);
2871: print $fh $env{'form.'.$formname};
2872: close($fh);
2873: if ($context eq 'existingfile') {
2874: my @info = stat($fullpath.'/'.$fname);
2875: return ($fullpath.'/'.$fname,$info[9]);
2876: } else {
2877: return $fullpath.'/'.$fname;
2878: }
2879: }
2880: if ($subdir eq 'scantron') {
2881: $fname = 'scantron_orig_'.$fname;
2882: } else {
2883: $fname="$subdir/$fname";
2884: }
2885: if ($context eq 'coursedoc') {
2886: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2887: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2888: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2889: return &finishuserfileupload($docuname,$docudom,
2890: $formname,$fname,$parser,$allfiles,
2891: $codebase,$thumbwidth,$thumbheight,
2892: $resizewidth,$resizeheight,$context,$mimetype);
2893: } else {
2894: $fname=$env{'form.folder'}.'/'.$fname;
2895: return &process_coursefile('uploaddoc',$docuname,$docudom,
2896: $fname,$formname,$parser,
2897: $allfiles,$codebase,$mimetype);
2898: }
2899: } elsif (defined($destuname)) {
2900: my $docuname=$destuname;
2901: my $docudom=$destudom;
2902: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2903: $parser,$allfiles,$codebase,
2904: $thumbwidth,$thumbheight,
2905: $resizewidth,$resizeheight,$context,$mimetype);
2906: } else {
2907: my $docuname=$env{'user.name'};
2908: my $docudom=$env{'user.domain'};
2909: if (exists($env{'form.group'})) {
2910: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2911: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2912: }
2913: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2914: $parser,$allfiles,$codebase,
2915: $thumbwidth,$thumbheight,
2916: $resizewidth,$resizeheight,$context,$mimetype);
2917: }
2918: }
2919:
2920: sub finishuserfileupload {
2921: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2922: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2923: my $path=$docudom.'/'.$docuname.'/';
2924: my $filepath=$perlvar{'lonDocRoot'};
2925:
2926: my ($fnamepath,$file,$fetchthumb);
2927: $file=$fname;
2928: if ($fname=~m|/|) {
2929: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2930: $path.=$fnamepath.'/';
2931: }
2932: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2933: my $count;
2934: for ($count=4;$count<=$#parts;$count++) {
2935: $filepath.="/$parts[$count]";
2936: if ((-e $filepath)!=1) {
2937: mkdir($filepath,0777);
2938: }
2939: }
2940:
2941: # Save the file
2942: {
2943: if (!open(FH,'>'.$filepath.'/'.$file)) {
2944: &logthis('Failed to create '.$filepath.'/'.$file);
2945: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2946: return '/adm/notfound.html';
2947: }
2948: if ($context eq 'overwrite') {
2949: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2950: my $target = $filepath.'/'.$file;
2951: if (-e $source) {
2952: my @info = stat($source);
2953: if ($info[9] eq $env{'form.timestamp'}) {
2954: unless (&File::Copy::move($source,$target)) {
2955: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2956: return "Moving from $source failed";
2957: }
2958: } else {
2959: return "Temporary file: $source had unexpected date/time for last modification";
2960: }
2961: } else {
2962: return "Temporary file: $source missing";
2963: }
2964: } elsif (!print FH ($env{'form.'.$formname})) {
2965: &logthis('Failed to write to '.$filepath.'/'.$file);
2966: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2967: return '/adm/notfound.html';
2968: }
2969: close(FH);
2970: if ($resizewidth && $resizeheight) {
2971: my $mm = new File::MMagic;
2972: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2973: if ($mime_type =~ m{^image/}) {
2974: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2975: }
2976: }
2977: }
2978: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
2979: if (ref($mimetype)) {
2980: if ($$mimetype eq '') {
2981: my $mm = new File::MMagic;
2982: my $type = $mm->checktype_filename($filepath.'/'.$file);
2983: $$mimetype = $type;
2984: }
2985: }
2986: }
2987: if ($parser eq 'parse') {
2988: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
2989: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2990: $allfiles,$codebase);
2991: unless ($parse_result eq 'ok') {
2992: &logthis('Failed to parse '.$filepath.$file.
2993: ' for embedded media: '.$parse_result);
2994: }
2995: }
2996: }
2997: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2998: my $input = $filepath.'/'.$file;
2999: my $output = $filepath.'/'.'tn-'.$file;
3000: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3001: system("convert -sample $thumbsize $input $output");
3002: if (-e $filepath.'/'.'tn-'.$file) {
3003: $fetchthumb = 1;
3004: }
3005: }
3006:
3007: # Notify homeserver to grep it
3008: #
3009: my $docuhome=&homeserver($docuname,$docudom);
3010: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3011: if ($fetchresult eq 'ok') {
3012: if ($fetchthumb) {
3013: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3014: if ($thumbresult ne 'ok') {
3015: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3016: $docuhome.': '.$thumbresult);
3017: }
3018: }
3019: #
3020: # Return the URL to it
3021: return '/uploaded/'.$path.$file;
3022: } else {
3023: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3024: ': '.$fetchresult);
3025: return '/adm/notfound.html';
3026: }
3027: }
3028:
3029: sub extract_embedded_items {
3030: my ($fullpath,$allfiles,$codebase,$content) = @_;
3031: my @state = ();
3032: my (%lastids,%related,%shockwave,%flashvars);
3033: my %javafiles = (
3034: codebase => '',
3035: code => '',
3036: archive => ''
3037: );
3038: my %mediafiles = (
3039: src => '',
3040: movie => '',
3041: );
3042: my $p;
3043: if ($content) {
3044: $p = HTML::LCParser->new($content);
3045: } else {
3046: $p = HTML::LCParser->new($fullpath);
3047: }
3048: while (my $t=$p->get_token()) {
3049: if ($t->[0] eq 'S') {
3050: my ($tagname, $attr) = ($t->[1],$t->[2]);
3051: push(@state, $tagname);
3052: if (lc($tagname) eq 'allow') {
3053: &add_filetype($allfiles,$attr->{'src'},'src');
3054: }
3055: if (lc($tagname) eq 'img') {
3056: &add_filetype($allfiles,$attr->{'src'},'src');
3057: }
3058: if (lc($tagname) eq 'a') {
3059: &add_filetype($allfiles,$attr->{'href'},'href');
3060: }
3061: if (lc($tagname) eq 'script') {
3062: my $src;
3063: if ($attr->{'archive'} =~ /\.jar$/i) {
3064: &add_filetype($allfiles,$attr->{'archive'},'archive');
3065: } else {
3066: if ($attr->{'src'} ne '') {
3067: $src = $attr->{'src'};
3068: &add_filetype($allfiles,$src,'src');
3069: }
3070: }
3071: my $text = $p->get_trimmed_text();
3072: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3073: my @swfargs = split(/,/,$1);
3074: foreach my $item (@swfargs) {
3075: $item =~ s/["']//g;
3076: $item =~ s/^\s+//;
3077: $item =~ s/\s+$//;
3078: }
3079: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3080: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3081: push(@{$related{$swfargs[0]}},$swfargs[2]);
3082: } else {
3083: $related{$swfargs[0]} = [$swfargs[2]];
3084: }
3085: }
3086: }
3087: }
3088: if (lc($tagname) eq 'link') {
3089: if (lc($attr->{'rel'}) eq 'stylesheet') {
3090: &add_filetype($allfiles,$attr->{'href'},'href');
3091: }
3092: }
3093: if (lc($tagname) eq 'object' ||
3094: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3095: foreach my $item (keys(%javafiles)) {
3096: $javafiles{$item} = '';
3097: }
3098: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3099: $lastids{lc($tagname)} = $attr->{'id'};
3100: }
3101: }
3102: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3103: my $name = lc($attr->{'name'});
3104: foreach my $item (keys(%javafiles)) {
3105: if ($name eq $item) {
3106: $javafiles{$item} = $attr->{'value'};
3107: last;
3108: }
3109: }
3110: my $pathfrom;
3111: foreach my $item (keys(%mediafiles)) {
3112: if ($name eq $item) {
3113: $pathfrom = $attr->{'value'};
3114: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3115: &add_filetype($allfiles,$pathfrom,$name);
3116: last;
3117: }
3118: }
3119: if ($name eq 'flashvars') {
3120: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3121: }
3122: if ($pathfrom ne '') {
3123: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3124: $pathfrom);
3125: }
3126: }
3127: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3128: foreach my $item (keys(%javafiles)) {
3129: if ($attr->{$item}) {
3130: $javafiles{$item} = $attr->{$item};
3131: last;
3132: }
3133: }
3134: foreach my $item (keys(%mediafiles)) {
3135: if ($attr->{$item}) {
3136: &add_filetype($allfiles,$attr->{$item},$item);
3137: last;
3138: }
3139: }
3140: if (lc($tagname) eq 'embed') {
3141: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3142: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3143: $attr->{'src'});
3144: }
3145: }
3146: }
3147: if ($t->[4] =~ m{/>$}) {
3148: pop(@state);
3149: }
3150: } elsif ($t->[0] eq 'E') {
3151: my ($tagname) = ($t->[1]);
3152: if ($javafiles{'codebase'} ne '') {
3153: $javafiles{'codebase'} .= '/';
3154: }
3155: if (lc($tagname) eq 'applet' ||
3156: lc($tagname) eq 'object' ||
3157: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3158: ) {
3159: foreach my $item (keys(%javafiles)) {
3160: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3161: my $file=$javafiles{'codebase'}.$javafiles{$item};
3162: &add_filetype($allfiles,$file,$item);
3163: }
3164: }
3165: }
3166: pop @state;
3167: }
3168: }
3169: foreach my $id (sort(keys(%flashvars))) {
3170: if ($shockwave{$id} ne '') {
3171: my @pairs = split(/\&/,$flashvars{$id});
3172: foreach my $pair (@pairs) {
3173: my ($key,$value) = split(/\=/,$pair);
3174: if ($key eq 'thumb') {
3175: &add_filetype($allfiles,$value,$key);
3176: } elsif ($key eq 'content') {
3177: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3178: my ($ext) = ($value =~ /\.([^.]+)$/);
3179: if ($ext ne '') {
3180: &add_filetype($allfiles,$path.$value,$ext);
3181: }
3182: }
3183: }
3184: }
3185: }
3186: return 'ok';
3187: }
3188:
3189: sub add_filetype {
3190: my ($allfiles,$file,$type)=@_;
3191: if (exists($allfiles->{$file})) {
3192: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3193: push(@{$allfiles->{$file}}, &escape($type));
3194: }
3195: } else {
3196: @{$allfiles->{$file}} = (&escape($type));
3197: }
3198: }
3199:
3200: sub embedded_dependency {
3201: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3202: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3203: if (($identifier ne '') &&
3204: (ref($related->{$identifier}) eq 'ARRAY') &&
3205: ($pathfrom ne '')) {
3206: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3207: foreach my $dep (@{$related->{$identifier}}) {
3208: &add_filetype($allfiles,$path.$dep,'object');
3209: }
3210: }
3211: }
3212: return;
3213: }
3214:
3215: sub removeuploadedurl {
3216: my ($url)=@_;
3217: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3218: return &removeuserfile($uname,$udom,$fname);
3219: }
3220:
3221: sub removeuserfile {
3222: my ($docuname,$docudom,$fname)=@_;
3223: my $home=&homeserver($docuname,$docudom);
3224: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3225: if ($result eq 'ok') {
3226: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3227: my $metafile = $fname.'.meta';
3228: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3229: my $url = "/uploaded/$docudom/$docuname/$fname";
3230: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3231: my $sqlresult =
3232: &update_portfolio_table($docuname,$docudom,$file,
3233: 'portfolio_metadata',$group,
3234: 'delete');
3235: }
3236: }
3237: return $result;
3238: }
3239:
3240: sub mkdiruserfile {
3241: my ($docuname,$docudom,$dir)=@_;
3242: my $home=&homeserver($docuname,$docudom);
3243: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3244: }
3245:
3246: sub renameuserfile {
3247: my ($docuname,$docudom,$old,$new)=@_;
3248: my $home=&homeserver($docuname,$docudom);
3249: my $result = &reply("renameuserfile:$docudom:$docuname:".
3250: &escape("$old").':'.&escape("$new"),$home);
3251: if ($result eq 'ok') {
3252: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3253: my $oldmeta = $old.'.meta';
3254: my $newmeta = $new.'.meta';
3255: my $metaresult =
3256: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3257: my $url = "/uploaded/$docudom/$docuname/$old";
3258: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3259: my $sqlresult =
3260: &update_portfolio_table($docuname,$docudom,$file,
3261: 'portfolio_metadata',$group,
3262: 'delete');
3263: }
3264: }
3265: return $result;
3266: }
3267:
3268: # ------------------------------------------------------------------------- Log
3269:
3270: sub log {
3271: my ($dom,$nam,$hom,$what)=@_;
3272: return critical("log:$dom:$nam:$what",$hom);
3273: }
3274:
3275: # ------------------------------------------------------------------ Course Log
3276: #
3277: # This routine flushes several buffers of non-mission-critical nature
3278: #
3279:
3280: sub flushcourselogs {
3281: &logthis('Flushing log buffers');
3282: #
3283: # course logs
3284: # This is a log of all transactions in a course, which can be used
3285: # for data mining purposes
3286: #
3287: # It also collects the courseid database, which lists last transaction
3288: # times and course titles for all courseids
3289: #
3290: my %courseidbuffer=();
3291: foreach my $crsid (keys(%courselogs)) {
3292: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3293: &escape($courselogs{$crsid}),
3294: $coursehombuf{$crsid}) eq 'ok') {
3295: delete $courselogs{$crsid};
3296: } else {
3297: &logthis('Failed to flush log buffer for '.$crsid);
3298: if (length($courselogs{$crsid})>40000) {
3299: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3300: " exceeded maximum size, deleting.</font>");
3301: delete $courselogs{$crsid};
3302: }
3303: }
3304: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3305: 'description' => $coursedescrbuf{$crsid},
3306: 'inst_code' => $courseinstcodebuf{$crsid},
3307: 'type' => $coursetypebuf{$crsid},
3308: 'owner' => $courseownerbuf{$crsid},
3309: };
3310: }
3311: #
3312: # Write course id database (reverse lookup) to homeserver of courses
3313: # Is used in pickcourse
3314: #
3315: foreach my $crs_home (keys(%courseidbuffer)) {
3316: my $response = &courseidput(&host_domain($crs_home),
3317: $courseidbuffer{$crs_home},
3318: $crs_home,'timeonly');
3319: }
3320: #
3321: # File accesses
3322: # Writes to the dynamic metadata of resources to get hit counts, etc.
3323: #
3324: foreach my $entry (keys(%accesshash)) {
3325: if ($entry =~ /___count$/) {
3326: my ($dom,$name);
3327: ($dom,$name,undef)=
3328: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3329: if (! defined($dom) || $dom eq '' ||
3330: ! defined($name) || $name eq '') {
3331: my $cid = $env{'request.course.id'};
3332: $dom = $env{'request.'.$cid.'.domain'};
3333: $name = $env{'request.'.$cid.'.num'};
3334: }
3335: my $value = $accesshash{$entry};
3336: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3337: my %temphash=($url => $value);
3338: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3339: if ($result eq 'ok') {
3340: delete $accesshash{$entry};
3341: }
3342: } else {
3343: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3344: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3345: my %temphash=($entry => $accesshash{$entry});
3346: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3347: delete $accesshash{$entry};
3348: }
3349: }
3350: }
3351: #
3352: # Roles
3353: # Reverse lookup of user roles for course faculty/staff and co-authorship
3354: #
3355: foreach my $entry (keys(%userrolehash)) {
3356: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3357: split(/\:/,$entry);
3358: if (&Apache::lonnet::put('nohist_userroles',
3359: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3360: $rudom,$runame) eq 'ok') {
3361: delete $userrolehash{$entry};
3362: }
3363: }
3364: #
3365: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3366: #
3367: my %domrolebuffer = ();
3368: foreach my $entry (keys(%domainrolehash)) {
3369: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3370: if ($domrolebuffer{$rudom}) {
3371: $domrolebuffer{$rudom}.='&'.&escape($entry).
3372: '='.&escape($domainrolehash{$entry});
3373: } else {
3374: $domrolebuffer{$rudom}.=&escape($entry).
3375: '='.&escape($domainrolehash{$entry});
3376: }
3377: delete $domainrolehash{$entry};
3378: }
3379: foreach my $dom (keys(%domrolebuffer)) {
3380: my %servers = &get_servers($dom,'library');
3381: foreach my $tryserver (keys(%servers)) {
3382: unless (&reply('domroleput:'.$dom.':'.
3383: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3384: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3385: }
3386: }
3387: }
3388: $dumpcount++;
3389: }
3390:
3391: sub courselog {
3392: my $what=shift;
3393: $what=time.':'.$what;
3394: unless ($env{'request.course.id'}) { return ''; }
3395: $coursedombuf{$env{'request.course.id'}}=
3396: $env{'course.'.$env{'request.course.id'}.'.domain'};
3397: $coursenumbuf{$env{'request.course.id'}}=
3398: $env{'course.'.$env{'request.course.id'}.'.num'};
3399: $coursehombuf{$env{'request.course.id'}}=
3400: $env{'course.'.$env{'request.course.id'}.'.home'};
3401: $coursedescrbuf{$env{'request.course.id'}}=
3402: $env{'course.'.$env{'request.course.id'}.'.description'};
3403: $courseinstcodebuf{$env{'request.course.id'}}=
3404: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3405: $courseownerbuf{$env{'request.course.id'}}=
3406: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3407: $coursetypebuf{$env{'request.course.id'}}=
3408: $env{'course.'.$env{'request.course.id'}.'.type'};
3409: if (defined $courselogs{$env{'request.course.id'}}) {
3410: $courselogs{$env{'request.course.id'}}.='&'.$what;
3411: } else {
3412: $courselogs{$env{'request.course.id'}}.=$what;
3413: }
3414: if (length($courselogs{$env{'request.course.id'}})>4048) {
3415: &flushcourselogs();
3416: }
3417: }
3418:
3419: sub courseacclog {
3420: my $fnsymb=shift;
3421: unless ($env{'request.course.id'}) { return ''; }
3422: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3423: if ($fnsymb=~/$LONCAPA::assess_re/) {
3424: $what.=':POST';
3425: # FIXME: Probably ought to escape things....
3426: foreach my $key (keys(%env)) {
3427: if ($key=~/^form\.(.*)/) {
3428: my $formitem = $1;
3429: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3430: $what.=':'.$formitem.'='.$env{$key};
3431: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3432: $what.=':'.$formitem.'='.$env{$key};
3433: }
3434: }
3435: }
3436: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3437: # FIXME: We should not be depending on a form parameter that someone
3438: # editing lonsearchcat.pm might change in the future.
3439: if ($env{'form.phase'} eq 'course_search') {
3440: $what.= ':POST';
3441: # FIXME: Probably ought to escape things....
3442: foreach my $element ('courseexp','crsfulltext','crsrelated',
3443: 'crsdiscuss') {
3444: $what.=':'.$element.'='.$env{'form.'.$element};
3445: }
3446: }
3447: }
3448: &courselog($what);
3449: }
3450:
3451: sub countacc {
3452: my $url=&declutter(shift);
3453: return if (! defined($url) || $url eq '');
3454: unless ($env{'request.course.id'}) { return ''; }
3455: #
3456: # Mark that this url was used in this course
3457: #
3458: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3459: #
3460: # Increase the access count for this resource in this child process
3461: #
3462: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3463: $accesshash{$key}++;
3464: }
3465:
3466: sub linklog {
3467: my ($from,$to)=@_;
3468: $from=&declutter($from);
3469: $to=&declutter($to);
3470: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3471: $accesshash{$to.'___'.$from.'___goto'}=1;
3472: }
3473:
3474: sub statslog {
3475: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3476: if ($users<2) { return; }
3477: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3478: 'course' => $env{'request.course.id'},
3479: 'sections' => '"all"',
3480: 'num_students' => $users,
3481: 'part' => $part,
3482: 'symb' => $symb,
3483: 'mean_tries' => $av_attempts,
3484: 'deg_of_diff' => $degdiff});
3485: foreach my $key (keys(%dynstore)) {
3486: $accesshash{$key}=$dynstore{$key};
3487: }
3488: }
3489:
3490: sub userrolelog {
3491: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3492: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
3493: ($trole=~/^in/) || ($trole=~/^cc/) ||
3494: ($trole=~/^ep/) || ($trole=~/^cr/) ||
3495: ($trole=~/^ta/) || ($trole=~/^co/)) {
3496: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3497: $userrolehash
3498: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3499: =$tend.':'.$tstart;
3500: }
3501: if (($env{'request.role'} =~ /dc\./) &&
3502: (($trole=~/^au/) || ($trole=~/^in/) ||
3503: ($trole=~/^cc/) || ($trole=~/^ep/) ||
3504: ($trole=~/^cr/) || ($trole=~/^ta/) ||
3505: ($trole=~/^co/))) {
3506: $userrolehash
3507: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3508: =$tend.':'.$tstart;
3509: }
3510: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
3511: ($trole=~/^li/) || ($trole=~/^li/) ||
3512: ($trole=~/^au/) || ($trole=~/^dg/) ||
3513: ($trole=~/^sc/)) {
3514: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3515: $domainrolehash
3516: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3517: = $tend.':'.$tstart;
3518: }
3519: }
3520:
3521: sub courserolelog {
3522: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3523: if (($trole eq 'cc') || ($trole eq 'in') ||
3524: ($trole eq 'ep') || ($trole eq 'ad') ||
3525: ($trole eq 'ta') || ($trole eq 'st') ||
3526: ($trole=~/^cr/) || ($trole eq 'gr') ||
3527: ($trole eq 'co')) {
3528: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3529: my $cdom = $1;
3530: my $cnum = $2;
3531: my $sec = $3;
3532: my $namespace = 'rolelog';
3533: my %storehash = (
3534: role => $trole,
3535: start => $tstart,
3536: end => $tend,
3537: selfenroll => $selfenroll,
3538: context => $context,
3539: );
3540: if ($trole eq 'gr') {
3541: $namespace = 'groupslog';
3542: $storehash{'group'} = $sec;
3543: } else {
3544: $storehash{'section'} = $sec;
3545: }
3546: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3547: if (($trole ne 'st') || ($sec ne '')) {
3548: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3549: }
3550: }
3551: }
3552: return;
3553: }
3554:
3555: sub get_course_adv_roles {
3556: my ($cid,$codes) = @_;
3557: $cid=$env{'request.course.id'} unless (defined($cid));
3558: my %coursehash=&coursedescription($cid);
3559: my $crstype = &Apache::loncommon::course_type($cid);
3560: my %nothide=();
3561: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3562: if ($user !~ /:/) {
3563: $nothide{join(':',split(/[\@]/,$user))}=1;
3564: } else {
3565: $nothide{$user}=1;
3566: }
3567: }
3568: my %returnhash=();
3569: my %dumphash=
3570: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3571: my $now=time;
3572: my %privileged;
3573: foreach my $entry (keys(%dumphash)) {
3574: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3575: if (($tstart) && ($tstart<0)) { next; }
3576: if (($tend) && ($tend<$now)) { next; }
3577: if (($tstart) && ($now<$tstart)) { next; }
3578: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3579: if ($username eq '' || $domain eq '') { next; }
3580: unless (ref($privileged{$domain}) eq 'HASH') {
3581: my %dompersonnel =
3582: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3583: $privileged{$domain} = {};
3584: foreach my $server (keys(%dompersonnel)) {
3585: if (ref($dompersonnel{$server}) eq 'HASH') {
3586: foreach my $user (keys(%{$dompersonnel{$server}})) {
3587: my ($trole,$uname,$udom) = split(/:/,$user);
3588: $privileged{$udom}{$uname} = 1;
3589: }
3590: }
3591: }
3592: }
3593: if ((exists($privileged{$domain}{$username})) &&
3594: (!$nothide{$username.':'.$domain})) { next; }
3595: if ($role eq 'cr') { next; }
3596: if ($codes) {
3597: if ($section) { $role .= ':'.$section; }
3598: if ($returnhash{$role}) {
3599: $returnhash{$role}.=','.$username.':'.$domain;
3600: } else {
3601: $returnhash{$role}=$username.':'.$domain;
3602: }
3603: } else {
3604: my $key=&plaintext($role,$crstype);
3605: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3606: if ($returnhash{$key}) {
3607: $returnhash{$key}.=','.$username.':'.$domain;
3608: } else {
3609: $returnhash{$key}=$username.':'.$domain;
3610: }
3611: }
3612: }
3613: return %returnhash;
3614: }
3615:
3616: sub get_my_roles {
3617: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3618: unless (defined($uname)) { $uname=$env{'user.name'}; }
3619: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3620: my (%dumphash,%nothide);
3621: if ($context eq 'userroles') {
3622: %dumphash = &dump('roles',$udom,$uname);
3623: } else {
3624: %dumphash=
3625: &dump('nohist_userroles',$udom,$uname);
3626: if ($hidepriv) {
3627: my %coursehash=&coursedescription($udom.'_'.$uname);
3628: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3629: if ($user !~ /:/) {
3630: $nothide{join(':',split(/[\@]/,$user))} = 1;
3631: } else {
3632: $nothide{$user} = 1;
3633: }
3634: }
3635: }
3636: }
3637: my %returnhash=();
3638: my $now=time;
3639: my %privileged;
3640: foreach my $entry (keys(%dumphash)) {
3641: my ($role,$tend,$tstart);
3642: if ($context eq 'userroles') {
3643: next if ($entry =~ /^rolesdef/);
3644: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3645: } else {
3646: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3647: }
3648: if (($tstart) && ($tstart<0)) { next; }
3649: my $status = 'active';
3650: if (($tend) && ($tend<=$now)) {
3651: $status = 'previous';
3652: }
3653: if (($tstart) && ($now<$tstart)) {
3654: $status = 'future';
3655: }
3656: if (ref($types) eq 'ARRAY') {
3657: if (!grep(/^\Q$status\E$/,@{$types})) {
3658: next;
3659: }
3660: } else {
3661: if ($status ne 'active') {
3662: next;
3663: }
3664: }
3665: my ($rolecode,$username,$domain,$section,$area);
3666: if ($context eq 'userroles') {
3667: ($area,$rolecode) = split(/_/,$entry);
3668: (undef,$domain,$username,$section) = split(/\//,$area);
3669: } else {
3670: ($role,$username,$domain,$section) = split(/\:/,$entry);
3671: }
3672: if (ref($roledoms) eq 'ARRAY') {
3673: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3674: next;
3675: }
3676: }
3677: if (ref($roles) eq 'ARRAY') {
3678: if (!grep(/^\Q$role\E$/,@{$roles})) {
3679: if ($role =~ /^cr\//) {
3680: if (!grep(/^cr$/,@{$roles})) {
3681: next;
3682: }
3683: } elsif ($role =~ /^gr\//) {
3684: if (!grep(/^gr$/,@{$roles})) {
3685: next;
3686: }
3687: } else {
3688: next;
3689: }
3690: }
3691: }
3692: if ($hidepriv) {
3693: if ($context eq 'userroles') {
3694: if ((&privileged($username,$domain)) &&
3695: (!$nothide{$username.':'.$domain})) {
3696: next;
3697: }
3698: } else {
3699: unless (ref($privileged{$domain}) eq 'HASH') {
3700: my %dompersonnel =
3701: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3702: $privileged{$domain} = {};
3703: if (keys(%dompersonnel)) {
3704: foreach my $server (keys(%dompersonnel)) {
3705: if (ref($dompersonnel{$server}) eq 'HASH') {
3706: foreach my $user (keys(%{$dompersonnel{$server}})) {
3707: my ($trole,$uname,$udom) = split(/:/,$user);
3708: $privileged{$udom}{$uname} = $trole;
3709: }
3710: }
3711: }
3712: }
3713: }
3714: if (exists($privileged{$domain}{$username})) {
3715: if (!$nothide{$username.':'.$domain}) {
3716: next;
3717: }
3718: }
3719: }
3720: }
3721: if ($withsec) {
3722: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3723: $tstart.':'.$tend;
3724: } else {
3725: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3726: }
3727: }
3728: return %returnhash;
3729: }
3730:
3731: # ----------------------------------------------------- Frontpage Announcements
3732: #
3733: #
3734:
3735: sub postannounce {
3736: my ($server,$text)=@_;
3737: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3738: unless ($text=~/\w/) { $text=''; }
3739: return &reply('setannounce:'.&escape($text),$server);
3740: }
3741:
3742: sub getannounce {
3743:
3744: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3745: my $announcement='';
3746: while (my $line = <$fh>) { $announcement .= $line; }
3747: close($fh);
3748: if ($announcement=~/\w/) {
3749: return
3750: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3751: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3752: } else {
3753: return '';
3754: }
3755: } else {
3756: return '';
3757: }
3758: }
3759:
3760: # ---------------------------------------------------------- Course ID routines
3761: # Deal with domain's nohist_courseid.db files
3762: #
3763:
3764: sub courseidput {
3765: my ($domain,$storehash,$coursehome,$caller) = @_;
3766: return unless (ref($storehash) eq 'HASH');
3767: my $outcome;
3768: if ($caller eq 'timeonly') {
3769: my $cids = '';
3770: foreach my $item (keys(%$storehash)) {
3771: $cids.=&escape($item).'&';
3772: }
3773: $cids=~s/\&$//;
3774: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3775: $coursehome);
3776: } else {
3777: my $items = '';
3778: foreach my $item (keys(%$storehash)) {
3779: $items.= &escape($item).'='.
3780: &freeze_escape($$storehash{$item}).'&';
3781: }
3782: $items=~s/\&$//;
3783: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3784: $coursehome);
3785: }
3786: if ($outcome eq 'unknown_cmd') {
3787: my $what;
3788: foreach my $cid (keys(%$storehash)) {
3789: $what .= &escape($cid).'=';
3790: foreach my $item ('description','inst_code','owner','type') {
3791: $what .= &escape($storehash->{$cid}{$item}).':';
3792: }
3793: $what =~ s/\:$/&/;
3794: }
3795: $what =~ s/\&$//;
3796: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3797: } else {
3798: return $outcome;
3799: }
3800: }
3801:
3802: sub courseiddump {
3803: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3804: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3805: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3806: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3807: my $as_hash = 1;
3808: my %returnhash;
3809: if (!$domfilter) { $domfilter=''; }
3810: my %libserv = &all_library();
3811: foreach my $tryserver (keys(%libserv)) {
3812: if ( ( $hostidflag == 1
3813: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3814: || (!defined($hostidflag)) ) {
3815:
3816: if (($domfilter eq '') ||
3817: (&host_domain($tryserver) eq $domfilter)) {
3818: my $rep =
3819: &reply('courseiddump:'.&host_domain($tryserver).':'.
3820: $sincefilter.':'.&escape($descfilter).':'.
3821: &escape($instcodefilter).':'.&escape($ownerfilter).
3822: ':'.&escape($coursefilter).':'.&escape($typefilter).
3823: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3824: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3825: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3826: &escape($cc_clone).':'.$cloneonly.':'.
3827: &escape($createdbefore).':'.&escape($createdafter).':'.
3828: &escape($creationcontext).':'.$domcloner,
3829: $tryserver);
3830: my @pairs=split(/\&/,$rep);
3831: foreach my $item (@pairs) {
3832: my ($key,$value)=split(/\=/,$item,2);
3833: $key = &unescape($key);
3834: next if ($key =~ /^error: 2 /);
3835: my $result = &thaw_unescape($value);
3836: if (ref($result) eq 'HASH') {
3837: $returnhash{$key}=$result;
3838: } else {
3839: my @responses = split(/:/,$value);
3840: my @items = ('description','inst_code','owner','type');
3841: for (my $i=0; $i<@responses; $i++) {
3842: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3843: }
3844: }
3845: }
3846: }
3847: }
3848: }
3849: return %returnhash;
3850: }
3851:
3852: sub courselastaccess {
3853: my ($cdom,$cnum,$hostidref) = @_;
3854: my %returnhash;
3855: if ($cdom && $cnum) {
3856: my $chome = &homeserver($cnum,$cdom);
3857: if ($chome ne 'no_host') {
3858: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3859: &extract_lastaccess(\%returnhash,$rep);
3860: }
3861: } else {
3862: if (!$cdom) { $cdom=''; }
3863: my %libserv = &all_library();
3864: foreach my $tryserver (keys(%libserv)) {
3865: if (ref($hostidref) eq 'ARRAY') {
3866: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3867: }
3868: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3869: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3870: &extract_lastaccess(\%returnhash,$rep);
3871: }
3872: }
3873: }
3874: return %returnhash;
3875: }
3876:
3877: sub extract_lastaccess {
3878: my ($returnhash,$rep) = @_;
3879: if (ref($returnhash) eq 'HASH') {
3880: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3881: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3882: $rep eq '') {
3883: my @pairs=split(/\&/,$rep);
3884: foreach my $item (@pairs) {
3885: my ($key,$value)=split(/\=/,$item,2);
3886: $key = &unescape($key);
3887: next if ($key =~ /^error: 2 /);
3888: $returnhash->{$key} = &thaw_unescape($value);
3889: }
3890: }
3891: }
3892: return;
3893: }
3894:
3895: # ---------------------------------------------------------- DC e-mail
3896:
3897: sub dcmailput {
3898: my ($domain,$msgid,$message,$server)=@_;
3899: my $status = &Apache::lonnet::critical(
3900: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3901: &escape($message),$server);
3902: return $status;
3903: }
3904:
3905: sub dcmaildump {
3906: my ($dom,$startdate,$enddate,$senders) = @_;
3907: my %returnhash=();
3908:
3909: if (defined(&domain($dom,'primary'))) {
3910: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3911: &escape($enddate).':';
3912: my @esc_senders=map { &escape($_)} @$senders;
3913: $cmd.=&escape(join('&',@esc_senders));
3914: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3915: my ($key,$value) = split(/\=/,$line,2);
3916: if (($key) && ($value)) {
3917: $returnhash{&unescape($key)} = &unescape($value);
3918: }
3919: }
3920: }
3921: return %returnhash;
3922: }
3923: # ---------------------------------------------------------- Domain roles
3924:
3925: sub get_domain_roles {
3926: my ($dom,$roles,$startdate,$enddate)=@_;
3927: if ((!defined($startdate)) || ($startdate eq '')) {
3928: $startdate = '.';
3929: }
3930: if ((!defined($enddate)) || ($enddate eq '')) {
3931: $enddate = '.';
3932: }
3933: my $rolelist;
3934: if (ref($roles) eq 'ARRAY') {
3935: $rolelist = join(':',@{$roles});
3936: }
3937: my %personnel = ();
3938:
3939: my %servers = &get_servers($dom,'library');
3940: foreach my $tryserver (keys(%servers)) {
3941: %{$personnel{$tryserver}}=();
3942: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3943: &escape($startdate).':'.
3944: &escape($enddate).':'.
3945: &escape($rolelist), $tryserver))) {
3946: my ($key,$value) = split(/\=/,$line,2);
3947: if (($key) && ($value)) {
3948: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3949: }
3950: }
3951: }
3952: return %personnel;
3953: }
3954:
3955: # ----------------------------------------------------------- Interval timing
3956:
3957: {
3958: # Caches needed for speedup of navmaps
3959: # We don't want to cache this for very long at all (5 seconds at most)
3960: #
3961: # The user for whom we cache
3962: my $cachedkey='';
3963: # The cached times for this user
3964: my %cachedtimes=();
3965: # When this was last done
3966: my $cachedtime=();
3967:
3968: sub load_all_first_access {
3969: my ($uname,$udom)=@_;
3970: if (($cachedkey eq $uname.':'.$udom) &&
3971: (abs($cachedtime-time)<5)) {
3972: return;
3973: }
3974: $cachedtime=time;
3975: $cachedkey=$uname.':'.$udom;
3976: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
3977: }
3978:
3979: sub get_first_access {
3980: my ($type,$argsymb,$argmap)=@_;
3981: my ($symb,$courseid,$udom,$uname)=&whichuser();
3982: if ($argsymb) { $symb=$argsymb; }
3983: my ($map,$id,$res)=&decode_symb($symb);
3984: if ($argmap) { $map = $argmap; }
3985: if ($type eq 'course') {
3986: $res='course';
3987: } elsif ($type eq 'map') {
3988: $res=&symbread($map);
3989: } else {
3990: $res=$symb;
3991: }
3992: &load_all_first_access($uname,$udom);
3993: return $cachedtimes{"$courseid\0$res"};
3994: }
3995:
3996: sub set_first_access {
3997: my ($type,$interval)=@_;
3998: my ($symb,$courseid,$udom,$uname)=&whichuser();
3999: my ($map,$id,$res)=&decode_symb($symb);
4000: if ($type eq 'course') {
4001: $res='course';
4002: } elsif ($type eq 'map') {
4003: $res=&symbread($map);
4004: } else {
4005: $res=$symb;
4006: }
4007: $cachedkey='';
4008: my $firstaccess=&get_first_access($type,$symb,$map);
4009: if (!$firstaccess) {
4010: my $start = time;
4011: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4012: $udom,$uname);
4013: if ($putres eq 'ok') {
4014: &put('timerinterval',{"$courseid\0$res"=>$interval},
4015: $udom,$uname);
4016: &appenv(
4017: {
4018: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4019: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4020: }
4021: );
4022: }
4023: return $putres;
4024: }
4025: return 'already_set';
4026: }
4027: }
4028: # --------------------------------------------- Set Expire Date for Spreadsheet
4029:
4030: sub expirespread {
4031: my ($uname,$udom,$stype,$usymb)=@_;
4032: my $cid=$env{'request.course.id'};
4033: if ($cid) {
4034: my $now=time;
4035: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4036: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4037: $env{'course.'.$cid.'.num'}.
4038: ':nohist_expirationdates:'.
4039: &escape($key).'='.$now,
4040: $env{'course.'.$cid.'.home'})
4041: }
4042: return 'ok';
4043: }
4044:
4045: # ----------------------------------------------------- Devalidate Spreadsheets
4046:
4047: sub devalidate {
4048: my ($symb,$uname,$udom)=@_;
4049: my $cid=$env{'request.course.id'};
4050: if ($cid) {
4051: # delete the stored spreadsheets for
4052: # - the student level sheet of this user in course's homespace
4053: # - the assessment level sheet for this resource
4054: # for this user in user's homespace
4055: # - current conditional state info
4056: my $key=$uname.':'.$udom.':';
4057: my $status=
4058: &del('nohist_calculatedsheets',
4059: [$key.'studentcalc:'],
4060: $env{'course.'.$cid.'.domain'},
4061: $env{'course.'.$cid.'.num'})
4062: .' '.
4063: &del('nohist_calculatedsheets_'.$cid,
4064: [$key.'assesscalc:'.$symb],$udom,$uname);
4065: unless ($status eq 'ok ok') {
4066: &logthis('Could not devalidate spreadsheet '.
4067: $uname.' at '.$udom.' for '.
4068: $symb.': '.$status);
4069: }
4070: &delenv('user.state.'.$cid);
4071: }
4072: }
4073:
4074: sub get_scalar {
4075: my ($string,$end) = @_;
4076: my $value;
4077: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4078: $value = $1;
4079: } elsif ($$string =~ s/^([^&]*?)&//) {
4080: $value = $1;
4081: }
4082: return &unescape($value);
4083: }
4084:
4085: sub array2str {
4086: my (@array) = @_;
4087: my $result=&arrayref2str(\@array);
4088: $result=~s/^__ARRAY_REF__//;
4089: $result=~s/__END_ARRAY_REF__$//;
4090: return $result;
4091: }
4092:
4093: sub arrayref2str {
4094: my ($arrayref) = @_;
4095: my $result='__ARRAY_REF__';
4096: foreach my $elem (@$arrayref) {
4097: if(ref($elem) eq 'ARRAY') {
4098: $result.=&arrayref2str($elem).'&';
4099: } elsif(ref($elem) eq 'HASH') {
4100: $result.=&hashref2str($elem).'&';
4101: } elsif(ref($elem)) {
4102: #print("Got a ref of ".(ref($elem))." skipping.");
4103: } else {
4104: $result.=&escape($elem).'&';
4105: }
4106: }
4107: $result=~s/\&$//;
4108: $result .= '__END_ARRAY_REF__';
4109: return $result;
4110: }
4111:
4112: sub hash2str {
4113: my (%hash) = @_;
4114: my $result=&hashref2str(\%hash);
4115: $result=~s/^__HASH_REF__//;
4116: $result=~s/__END_HASH_REF__$//;
4117: return $result;
4118: }
4119:
4120: sub hashref2str {
4121: my ($hashref)=@_;
4122: my $result='__HASH_REF__';
4123: foreach my $key (sort(keys(%$hashref))) {
4124: if (ref($key) eq 'ARRAY') {
4125: $result.=&arrayref2str($key).'=';
4126: } elsif (ref($key) eq 'HASH') {
4127: $result.=&hashref2str($key).'=';
4128: } elsif (ref($key)) {
4129: $result.='=';
4130: #print("Got a ref of ".(ref($key))." skipping.");
4131: } else {
4132: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4133: }
4134:
4135: if(ref($hashref->{$key}) eq 'ARRAY') {
4136: $result.=&arrayref2str($hashref->{$key}).'&';
4137: } elsif(ref($hashref->{$key}) eq 'HASH') {
4138: $result.=&hashref2str($hashref->{$key}).'&';
4139: } elsif(ref($hashref->{$key})) {
4140: $result.='&';
4141: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4142: } else {
4143: $result.=&escape($hashref->{$key}).'&';
4144: }
4145: }
4146: $result=~s/\&$//;
4147: $result .= '__END_HASH_REF__';
4148: return $result;
4149: }
4150:
4151: sub str2hash {
4152: my ($string)=@_;
4153: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4154: return %$hash;
4155: }
4156:
4157: sub str2hashref {
4158: my ($string) = @_;
4159:
4160: my %hash;
4161:
4162: if($string !~ /^__HASH_REF__/) {
4163: if (! ($string eq '' || !defined($string))) {
4164: $hash{'error'}='Not hash reference';
4165: }
4166: return (\%hash, $string);
4167: }
4168:
4169: $string =~ s/^__HASH_REF__//;
4170:
4171: while($string !~ /^__END_HASH_REF__/) {
4172: #key
4173: my $key='';
4174: if($string =~ /^__HASH_REF__/) {
4175: ($key, $string)=&str2hashref($string);
4176: if(defined($key->{'error'})) {
4177: $hash{'error'}='Bad data';
4178: return (\%hash, $string);
4179: }
4180: } elsif($string =~ /^__ARRAY_REF__/) {
4181: ($key, $string)=&str2arrayref($string);
4182: if($key->[0] eq 'Array reference error') {
4183: $hash{'error'}='Bad data';
4184: return (\%hash, $string);
4185: }
4186: } else {
4187: $string =~ s/^(.*?)=//;
4188: $key=&unescape($1);
4189: }
4190: $string =~ s/^=//;
4191:
4192: #value
4193: my $value='';
4194: if($string =~ /^__HASH_REF__/) {
4195: ($value, $string)=&str2hashref($string);
4196: if(defined($value->{'error'})) {
4197: $hash{'error'}='Bad data';
4198: return (\%hash, $string);
4199: }
4200: } elsif($string =~ /^__ARRAY_REF__/) {
4201: ($value, $string)=&str2arrayref($string);
4202: if($value->[0] eq 'Array reference error') {
4203: $hash{'error'}='Bad data';
4204: return (\%hash, $string);
4205: }
4206: } else {
4207: $value=&get_scalar(\$string,'__END_HASH_REF__');
4208: }
4209: $string =~ s/^&//;
4210:
4211: $hash{$key}=$value;
4212: }
4213:
4214: $string =~ s/^__END_HASH_REF__//;
4215:
4216: return (\%hash, $string);
4217: }
4218:
4219: sub str2array {
4220: my ($string)=@_;
4221: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4222: return @$array;
4223: }
4224:
4225: sub str2arrayref {
4226: my ($string) = @_;
4227: my @array;
4228:
4229: if($string !~ /^__ARRAY_REF__/) {
4230: if (! ($string eq '' || !defined($string))) {
4231: $array[0]='Array reference error';
4232: }
4233: return (\@array, $string);
4234: }
4235:
4236: $string =~ s/^__ARRAY_REF__//;
4237:
4238: while($string !~ /^__END_ARRAY_REF__/) {
4239: my $value='';
4240: if($string =~ /^__HASH_REF__/) {
4241: ($value, $string)=&str2hashref($string);
4242: if(defined($value->{'error'})) {
4243: $array[0] ='Array reference error';
4244: return (\@array, $string);
4245: }
4246: } elsif($string =~ /^__ARRAY_REF__/) {
4247: ($value, $string)=&str2arrayref($string);
4248: if($value->[0] eq 'Array reference error') {
4249: $array[0] ='Array reference error';
4250: return (\@array, $string);
4251: }
4252: } else {
4253: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4254: }
4255: $string =~ s/^&//;
4256:
4257: push(@array, $value);
4258: }
4259:
4260: $string =~ s/^__END_ARRAY_REF__//;
4261:
4262: return (\@array, $string);
4263: }
4264:
4265: # -------------------------------------------------------------------Temp Store
4266:
4267: sub tmpreset {
4268: my ($symb,$namespace,$domain,$stuname) = @_;
4269: if (!$symb) {
4270: $symb=&symbread();
4271: if (!$symb) { $symb= $env{'request.url'}; }
4272: }
4273: $symb=escape($symb);
4274:
4275: if (!$namespace) { $namespace=$env{'request.state'}; }
4276: $namespace=~s/\//\_/g;
4277: $namespace=~s/\W//g;
4278:
4279: if (!$domain) { $domain=$env{'user.domain'}; }
4280: if (!$stuname) { $stuname=$env{'user.name'}; }
4281: if ($domain eq 'public' && $stuname eq 'public') {
4282: $stuname=$ENV{'REMOTE_ADDR'};
4283: }
4284: my $path=LONCAPA::tempdir();
4285: my %hash;
4286: if (tie(%hash,'GDBM_File',
4287: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4288: &GDBM_WRCREAT(),0640)) {
4289: foreach my $key (keys(%hash)) {
4290: if ($key=~ /:$symb/) {
4291: delete($hash{$key});
4292: }
4293: }
4294: }
4295: }
4296:
4297: sub tmpstore {
4298: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4299:
4300: if (!$symb) {
4301: $symb=&symbread();
4302: if (!$symb) { $symb= $env{'request.url'}; }
4303: }
4304: $symb=escape($symb);
4305:
4306: if (!$namespace) {
4307: # I don't think we would ever want to store this for a course.
4308: # it seems this will only be used if we don't have a course.
4309: #$namespace=$env{'request.course.id'};
4310: #if (!$namespace) {
4311: $namespace=$env{'request.state'};
4312: #}
4313: }
4314: $namespace=~s/\//\_/g;
4315: $namespace=~s/\W//g;
4316: if (!$domain) { $domain=$env{'user.domain'}; }
4317: if (!$stuname) { $stuname=$env{'user.name'}; }
4318: if ($domain eq 'public' && $stuname eq 'public') {
4319: $stuname=$ENV{'REMOTE_ADDR'};
4320: }
4321: my $now=time;
4322: my %hash;
4323: my $path=LONCAPA::tempdir();
4324: if (tie(%hash,'GDBM_File',
4325: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4326: &GDBM_WRCREAT(),0640)) {
4327: $hash{"version:$symb"}++;
4328: my $version=$hash{"version:$symb"};
4329: my $allkeys='';
4330: foreach my $key (keys(%$storehash)) {
4331: $allkeys.=$key.':';
4332: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4333: }
4334: $hash{"$version:$symb:timestamp"}=$now;
4335: $allkeys.='timestamp';
4336: $hash{"$version:keys:$symb"}=$allkeys;
4337: if (untie(%hash)) {
4338: return 'ok';
4339: } else {
4340: return "error:$!";
4341: }
4342: } else {
4343: return "error:$!";
4344: }
4345: }
4346:
4347: # -----------------------------------------------------------------Temp Restore
4348:
4349: sub tmprestore {
4350: my ($symb,$namespace,$domain,$stuname) = @_;
4351:
4352: if (!$symb) {
4353: $symb=&symbread();
4354: if (!$symb) { $symb= $env{'request.url'}; }
4355: }
4356: $symb=escape($symb);
4357:
4358: if (!$namespace) { $namespace=$env{'request.state'}; }
4359:
4360: if (!$domain) { $domain=$env{'user.domain'}; }
4361: if (!$stuname) { $stuname=$env{'user.name'}; }
4362: if ($domain eq 'public' && $stuname eq 'public') {
4363: $stuname=$ENV{'REMOTE_ADDR'};
4364: }
4365: my %returnhash;
4366: $namespace=~s/\//\_/g;
4367: $namespace=~s/\W//g;
4368: my %hash;
4369: my $path=LONCAPA::tempdir();
4370: if (tie(%hash,'GDBM_File',
4371: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4372: &GDBM_READER(),0640)) {
4373: my $version=$hash{"version:$symb"};
4374: $returnhash{'version'}=$version;
4375: my $scope;
4376: for ($scope=1;$scope<=$version;$scope++) {
4377: my $vkeys=$hash{"$scope:keys:$symb"};
4378: my @keys=split(/:/,$vkeys);
4379: my $key;
4380: $returnhash{"$scope:keys"}=$vkeys;
4381: foreach $key (@keys) {
4382: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4383: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4384: }
4385: }
4386: if (!(untie(%hash))) {
4387: return "error:$!";
4388: }
4389: } else {
4390: return "error:$!";
4391: }
4392: return %returnhash;
4393: }
4394:
4395: # ----------------------------------------------------------------------- Store
4396:
4397: sub store {
4398: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4399: my $home='';
4400:
4401: if ($stuname) { $home=&homeserver($stuname,$domain); }
4402:
4403: $symb=&symbclean($symb);
4404: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4405:
4406: if (!$domain) { $domain=$env{'user.domain'}; }
4407: if (!$stuname) { $stuname=$env{'user.name'}; }
4408:
4409: &devalidate($symb,$stuname,$domain);
4410:
4411: $symb=escape($symb);
4412: if (!$namespace) {
4413: unless ($namespace=$env{'request.course.id'}) {
4414: return '';
4415: }
4416: }
4417: if (!$home) { $home=$env{'user.home'}; }
4418:
4419: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4420: $$storehash{'host'}=$perlvar{'lonHostID'};
4421:
4422: my $namevalue='';
4423: foreach my $key (keys(%$storehash)) {
4424: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4425: }
4426: $namevalue=~s/\&$//;
4427: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4428: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4429: }
4430:
4431: # -------------------------------------------------------------- Critical Store
4432:
4433: sub cstore {
4434: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4435: my $home='';
4436:
4437: if ($stuname) { $home=&homeserver($stuname,$domain); }
4438:
4439: $symb=&symbclean($symb);
4440: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4441:
4442: if (!$domain) { $domain=$env{'user.domain'}; }
4443: if (!$stuname) { $stuname=$env{'user.name'}; }
4444:
4445: &devalidate($symb,$stuname,$domain);
4446:
4447: $symb=escape($symb);
4448: if (!$namespace) {
4449: unless ($namespace=$env{'request.course.id'}) {
4450: return '';
4451: }
4452: }
4453: if (!$home) { $home=$env{'user.home'}; }
4454:
4455: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4456: $$storehash{'host'}=$perlvar{'lonHostID'};
4457:
4458: my $namevalue='';
4459: foreach my $key (keys(%$storehash)) {
4460: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4461: }
4462: $namevalue=~s/\&$//;
4463: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4464: return critical
4465: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4466: }
4467:
4468: # --------------------------------------------------------------------- Restore
4469:
4470: sub restore {
4471: my ($symb,$namespace,$domain,$stuname) = @_;
4472: my $home='';
4473:
4474: if ($stuname) { $home=&homeserver($stuname,$domain); }
4475:
4476: if (!$symb) {
4477: unless ($symb=escape(&symbread())) { return ''; }
4478: } else {
4479: $symb=&escape(&symbclean($symb));
4480: }
4481: if (!$namespace) {
4482: unless ($namespace=$env{'request.course.id'}) {
4483: return '';
4484: }
4485: }
4486: if (!$domain) { $domain=$env{'user.domain'}; }
4487: if (!$stuname) { $stuname=$env{'user.name'}; }
4488: if (!$home) { $home=$env{'user.home'}; }
4489: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4490:
4491: my %returnhash=();
4492: foreach my $line (split(/\&/,$answer)) {
4493: my ($name,$value)=split(/\=/,$line);
4494: $returnhash{&unescape($name)}=&thaw_unescape($value);
4495: }
4496: my $version;
4497: for ($version=1;$version<=$returnhash{'version'};$version++) {
4498: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4499: $returnhash{$item}=$returnhash{$version.':'.$item};
4500: }
4501: }
4502: return %returnhash;
4503: }
4504:
4505: # ---------------------------------------------------------- Course Description
4506: #
4507: #
4508:
4509: sub coursedescription {
4510: my ($courseid,$args)=@_;
4511: $courseid=~s/^\///;
4512: $courseid=~s/\_/\//g;
4513: my ($cdomain,$cnum)=split(/\//,$courseid);
4514: my $chome=&homeserver($cnum,$cdomain);
4515: my $normalid=$cdomain.'_'.$cnum;
4516: # need to always cache even if we get errors otherwise we keep
4517: # trying and trying and trying to get the course description.
4518: my %envhash=();
4519: my %returnhash=();
4520:
4521: my $expiretime=600;
4522: if ($env{'request.course.id'} eq $normalid) {
4523: $expiretime=120;
4524: }
4525:
4526: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4527: if (!$args->{'freshen_cache'}
4528: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4529: foreach my $key (keys(%env)) {
4530: next if ($key !~ /^\Q$prefix\E(.*)/);
4531: my ($setting) = $1;
4532: $returnhash{$setting} = $env{$key};
4533: }
4534: return %returnhash;
4535: }
4536:
4537: # get the data again
4538:
4539: if (!$args->{'one_time'}) {
4540: $envhash{'course.'.$normalid.'.last_cache'}=time;
4541: }
4542:
4543: if ($chome ne 'no_host') {
4544: %returnhash=&dump('environment',$cdomain,$cnum);
4545: if (!exists($returnhash{'con_lost'})) {
4546: my $username = $env{'user.name'}; # Defult username
4547: if(defined $args->{'user'}) {
4548: $username = $args->{'user'};
4549: }
4550: $returnhash{'home'}= $chome;
4551: $returnhash{'domain'} = $cdomain;
4552: $returnhash{'num'} = $cnum;
4553: if (!defined($returnhash{'type'})) {
4554: $returnhash{'type'} = 'Course';
4555: }
4556: while (my ($name,$value) = each %returnhash) {
4557: $envhash{'course.'.$normalid.'.'.$name}=$value;
4558: }
4559: $returnhash{'url'}=&clutter($returnhash{'url'});
4560: $returnhash{'fn'}=LONCAPA::tempdir() .
4561: $username.'_'.$cdomain.'_'.$cnum;
4562: $envhash{'course.'.$normalid.'.home'}=$chome;
4563: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4564: $envhash{'course.'.$normalid.'.num'}=$cnum;
4565: }
4566: }
4567: if (!$args->{'one_time'}) {
4568: &appenv(\%envhash);
4569: }
4570: return %returnhash;
4571: }
4572:
4573: sub update_released_required {
4574: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4575: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4576: $cid = $env{'request.course.id'};
4577: $cdom = $env{'course.'.$cid.'.domain'};
4578: $cnum = $env{'course.'.$cid.'.num'};
4579: $chome = $env{'course.'.$cid.'.home'};
4580: }
4581: if ($needsrelease) {
4582: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4583: my $needsupdate;
4584: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4585: $needsupdate = 1;
4586: } else {
4587: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4588: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4589: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4590: $needsupdate = 1;
4591: }
4592: }
4593: if ($needsupdate) {
4594: my %needshash = (
4595: 'internal.releaserequired' => $needsrelease,
4596: );
4597: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4598: if ($putresult eq 'ok') {
4599: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4600: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4601: if (ref($crsinfo{$cid}) eq 'HASH') {
4602: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4603: &courseidput($cdom,\%crsinfo,$chome,'notime');
4604: }
4605: }
4606: }
4607: }
4608: return;
4609: }
4610:
4611: # -------------------------------------------------See if a user is privileged
4612:
4613: sub privileged {
4614: my ($username,$domain)=@_;
4615: my $rolesdump=&reply("dump:$domain:$username:roles",
4616: &homeserver($username,$domain));
4617: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4618: ($rolesdump =~ /^error:/)) {
4619: return 0;
4620: }
4621: my $now=time;
4622: if ($rolesdump ne '') {
4623: foreach my $entry (split(/&/,$rolesdump)) {
4624: if ($entry!~/^rolesdef_/) {
4625: my ($area,$role)=split(/=/,$entry);
4626: $area=~s/\_\w\w$//;
4627: my ($trole,$tend,$tstart)=split(/_/,$role);
4628: if (($trole eq 'dc') || ($trole eq 'su')) {
4629: my $active=1;
4630: if ($tend) {
4631: if ($tend<$now) { $active=0; }
4632: }
4633: if ($tstart) {
4634: if ($tstart>$now) { $active=0; }
4635: }
4636: if ($active) { return 1; }
4637: }
4638: }
4639: }
4640: }
4641: return 0;
4642: }
4643:
4644: # -------------------------------------------------------- Get user privileges
4645:
4646: sub rolesinit {
4647: my ($domain,$username,$authhost)=@_;
4648: my $now=time;
4649: my %userroles = ('user.login.time' => $now);
4650: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
4651: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4652: ($rolesdump =~ /^error:/)) {
4653: return \%userroles;
4654: }
4655: my %firstaccess = &dump('firstaccesstimes',$domain,$username);
4656: my %timerinterval = &dump('timerinterval',$domain,$username);
4657: my (%coursetimerstarts,%firstaccchk,%firstaccenv,
4658: %coursetimerintervals,%timerintchk,%timerintenv);
4659: foreach my $key (keys(%firstaccess)) {
4660: my ($cid,$rest) = split(/\0/,$key);
4661: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4662: }
4663: foreach my $key (keys(%timerinterval)) {
4664: my ($cid,$rest) = split(/\0/,$key);
4665: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4666: }
4667: my %allroles=();
4668: my %allgroups=();
4669:
4670: if ($rolesdump ne '') {
4671: foreach my $entry (split(/&/,$rolesdump)) {
4672: if ($entry!~/^rolesdef_/) {
4673: my ($area,$role)=split(/=/,$entry);
4674: $area=~s/\_\w\w$//;
4675: my ($trole,$tend,$tstart,$group_privs);
4676: if ($role=~/^cr/) {
4677: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4678: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4679: ($tend,$tstart)=split('_',$trest);
4680: } else {
4681: $trole=$role;
4682: }
4683: } elsif ($role =~ m|^gr/|) {
4684: ($trole,$tend,$tstart) = split(/_/,$role);
4685: next if ($tstart eq '-1');
4686: ($trole,$group_privs) = split(/\//,$trole);
4687: $group_privs = &unescape($group_privs);
4688: } else {
4689: ($trole,$tend,$tstart)=split(/_/,$role);
4690: }
4691: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4692: $username);
4693: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4694: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4695: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4696: if (($area ne '') && ($trole ne '')) {
4697: my $spec=$trole.'.'.$area;
4698: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4699: if ($trole =~ /^cr\//) {
4700: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4701: } elsif ($trole eq 'gr') {
4702: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4703: } else {
4704: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4705: }
4706: if ($trole ne 'gr') {
4707: my $cid = $tdomain.'_'.$trest;
4708: unless ($firstaccchk{$cid}) {
4709: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4710: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4711: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4712: $coursetimerstarts{$cid}{$item};
4713: }
4714: }
4715: $firstaccchk{$cid} = 1;
4716: }
4717: unless ($timerintchk{$cid}) {
4718: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
4719: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
4720: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
4721: $coursetimerintervals{$cid}{$item};
4722: }
4723: }
4724: $timerintchk{$cid} = 1;
4725: }
4726: }
4727: }
4728: }
4729: }
4730: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4731: $userroles{'user.adv'} = $adv;
4732: $userroles{'user.author'} = $author;
4733: $env{'user.adv'}=$adv;
4734: }
4735: return (\%userroles,\%firstaccenv,\%timerintenv);
4736: }
4737:
4738: sub set_arearole {
4739: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4740: # log the associated role with the area
4741: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4742: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4743: }
4744:
4745: sub custom_roleprivs {
4746: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4747: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4748: my $homsvr=homeserver($rauthor,$rdomain);
4749: if (&hostname($homsvr) ne '') {
4750: my ($rdummy,$roledef)=
4751: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4752: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4753: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4754: if (defined($syspriv)) {
4755: if ($trest =~ /^$match_community$/) {
4756: $syspriv =~ s/bre\&S//;
4757: }
4758: $$allroles{'cm./'}.=':'.$syspriv;
4759: $$allroles{$spec.'./'}.=':'.$syspriv;
4760: }
4761: if ($tdomain ne '') {
4762: if (defined($dompriv)) {
4763: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4764: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4765: }
4766: if (($trest ne '') && (defined($coursepriv))) {
4767: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4768: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4769: }
4770: }
4771: }
4772: }
4773: }
4774:
4775: sub group_roleprivs {
4776: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4777: my $access = 1;
4778: my $now = time;
4779: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4780: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4781: if ($access) {
4782: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4783: $$allgroups{$course}{$group} .=':'.$group_privs;
4784: }
4785: }
4786:
4787: sub standard_roleprivs {
4788: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4789: if (defined($pr{$trole.':s'})) {
4790: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4791: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4792: }
4793: if ($tdomain ne '') {
4794: if (defined($pr{$trole.':d'})) {
4795: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4796: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4797: }
4798: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4799: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4800: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4801: }
4802: }
4803: }
4804:
4805: sub set_userprivs {
4806: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4807: my $author=0;
4808: my $adv=0;
4809: my %grouproles = ();
4810: if (keys(%{$allgroups}) > 0) {
4811: my @groupkeys;
4812: foreach my $role (keys(%{$allroles})) {
4813: push(@groupkeys,$role);
4814: }
4815: if (ref($groups_roles) eq 'HASH') {
4816: foreach my $key (keys(%{$groups_roles})) {
4817: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4818: push(@groupkeys,$key);
4819: }
4820: }
4821: }
4822: if (@groupkeys > 0) {
4823: foreach my $role (@groupkeys) {
4824: my ($trole,$area,$sec,$extendedarea);
4825: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4826: $trole = $1;
4827: $area = $2;
4828: $sec = $3;
4829: $extendedarea = $area.$sec;
4830: if (exists($$allgroups{$area})) {
4831: foreach my $group (keys(%{$$allgroups{$area}})) {
4832: my $spec = $trole.'.'.$extendedarea;
4833: $grouproles{$spec.'.'.$area.'/'.$group} =
4834: $$allgroups{$area}{$group};
4835: }
4836: }
4837: }
4838: }
4839: }
4840: }
4841: foreach my $group (keys(%grouproles)) {
4842: $$allroles{$group} = $grouproles{$group};
4843: }
4844: foreach my $role (keys(%{$allroles})) {
4845: my %thesepriv;
4846: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4847: foreach my $item (split(/:/,$$allroles{$role})) {
4848: if ($item ne '') {
4849: my ($privilege,$restrictions)=split(/&/,$item);
4850: if ($restrictions eq '') {
4851: $thesepriv{$privilege}='F';
4852: } elsif ($thesepriv{$privilege} ne 'F') {
4853: $thesepriv{$privilege}.=$restrictions;
4854: }
4855: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4856: }
4857: }
4858: my $thesestr='';
4859: foreach my $priv (sort(keys(%thesepriv))) {
4860: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4861: }
4862: $userroles->{'user.priv.'.$role} = $thesestr;
4863: }
4864: return ($author,$adv);
4865: }
4866:
4867: sub role_status {
4868: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4869: my @pwhere = ();
4870: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4871: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4872: unless (!defined($$role) || $$role eq '') {
4873: $$where=join('.',@pwhere);
4874: $$trolecode=$$role.'.'.$$where;
4875: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4876: $$tstatus='is';
4877: if ($$tstart && $$tstart>$update) {
4878: $$tstatus='future';
4879: if ($$tstart<$now) {
4880: if ($$tstart && $$tstart>$refresh) {
4881: if (($$where ne '') && ($$role ne '')) {
4882: my (%allroles,%allgroups,$group_privs,
4883: %groups_roles,@rolecodes);
4884: my %userroles = (
4885: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4886: );
4887: @rolecodes = ('cm');
4888: my $spec=$$role.'.'.$$where;
4889: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4890: if ($$role =~ /^cr\//) {
4891: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4892: push(@rolecodes,'cr');
4893: } elsif ($$role eq 'gr') {
4894: push(@rolecodes,$$role);
4895: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4896: $env{'user.name'});
4897: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4898: (undef,my $group_privs) = split(/\//,$trole);
4899: $group_privs = &unescape($group_privs);
4900: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4901: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4902: &get_groups_roles($tdomain,$trest,
4903: \%course_roles,\@rolecodes,
4904: \%groups_roles);
4905: } else {
4906: push(@rolecodes,$$role);
4907: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4908: }
4909: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4910: &appenv(\%userroles,\@rolecodes);
4911: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4912: }
4913: }
4914: $$tstatus = 'is';
4915: }
4916: }
4917: if ($$tend) {
4918: if ($$tend<$update) {
4919: $$tstatus='expired';
4920: } elsif ($$tend<$now) {
4921: $$tstatus='will_not';
4922: }
4923: }
4924: }
4925: }
4926: }
4927:
4928: sub get_groups_roles {
4929: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4930: return unless((ref($cdom_courseroles) eq 'HASH') &&
4931: (ref($rolecodes) eq 'ARRAY') &&
4932: (ref($groups_roles) eq 'HASH'));
4933: if (keys(%{$cdom_courseroles}) > 0) {
4934: my ($cnum) = ($rest =~ /^($match_courseid)/);
4935: if ($cdom ne '' && $cnum ne '') {
4936: foreach my $key (keys(%{$cdom_courseroles})) {
4937: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4938: my $crsrole = $1;
4939: my $crssec = $2;
4940: if ($crsrole =~ /^cr/) {
4941: unless (grep(/^cr$/,@{$rolecodes})) {
4942: push(@{$rolecodes},'cr');
4943: }
4944: } else {
4945: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4946: push(@{$rolecodes},$crsrole);
4947: }
4948: }
4949: my $rolekey = "$crsrole./$cdom/$cnum";
4950: if ($crssec ne '') {
4951: $rolekey .= "/$crssec";
4952: }
4953: $rolekey .= './';
4954: $groups_roles->{$rolekey} = $rolecodes;
4955: }
4956: }
4957: }
4958: }
4959: return;
4960: }
4961:
4962: sub delete_env_groupprivs {
4963: my ($where,$courseroles,$possroles) = @_;
4964: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4965: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4966: unless (ref($courseroles->{$udom}) eq 'HASH') {
4967: %{$courseroles->{$udom}} =
4968: &get_my_roles('','','userroles',['active'],
4969: $possroles,[$udom],1);
4970: }
4971: if (ref($courseroles->{$udom}) eq 'HASH') {
4972: foreach my $item (keys(%{$courseroles->{$udom}})) {
4973: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4974: my $area = '/'.$cdom.'/'.$cnum;
4975: my $privkey = "user.priv.$crsrole.$area";
4976: if ($crssec ne '') {
4977: $privkey .= '/'.$crssec;
4978: }
4979: $privkey .= ".$area/$group";
4980: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
4981: }
4982: }
4983: return;
4984: }
4985:
4986: sub check_adhoc_privs {
4987: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
4988: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4989: if ($env{$cckey}) {
4990: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4991: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4992: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4993: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4994: }
4995: } else {
4996: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4997: }
4998: }
4999:
5000: sub set_adhoc_privileges {
5001: # role can be cc or ca
5002: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5003: my $area = '/'.$dcdom.'/'.$pickedcourse;
5004: my $spec = $role.'.'.$area;
5005: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5006: $env{'user.name'});
5007: my %ccrole = ();
5008: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5009: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5010: &appenv(\%userroles,[$role,'cm']);
5011: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5012: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5013: &appenv( {'request.role' => $spec,
5014: 'request.role.domain' => $dcdom,
5015: 'request.course.sec' => ''
5016: }
5017: );
5018: my $tadv=0;
5019: if (&allowed('adv') eq 'F') { $tadv=1; }
5020: &appenv({'request.role.adv' => $tadv});
5021: }
5022: }
5023:
5024: # --------------------------------------------------------------- get interface
5025:
5026: sub get {
5027: my ($namespace,$storearr,$udomain,$uname)=@_;
5028: my $items='';
5029: foreach my $item (@$storearr) {
5030: $items.=&escape($item).'&';
5031: }
5032: $items=~s/\&$//;
5033: if (!$udomain) { $udomain=$env{'user.domain'}; }
5034: if (!$uname) { $uname=$env{'user.name'}; }
5035: my $uhome=&homeserver($uname,$udomain);
5036:
5037: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5038: my @pairs=split(/\&/,$rep);
5039: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5040: return @pairs;
5041: }
5042: my %returnhash=();
5043: my $i=0;
5044: foreach my $item (@$storearr) {
5045: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5046: $i++;
5047: }
5048: return %returnhash;
5049: }
5050:
5051: # --------------------------------------------------------------- del interface
5052:
5053: sub del {
5054: my ($namespace,$storearr,$udomain,$uname)=@_;
5055: my $items='';
5056: foreach my $item (@$storearr) {
5057: $items.=&escape($item).'&';
5058: }
5059:
5060: $items=~s/\&$//;
5061: if (!$udomain) { $udomain=$env{'user.domain'}; }
5062: if (!$uname) { $uname=$env{'user.name'}; }
5063: my $uhome=&homeserver($uname,$udomain);
5064: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5065: }
5066:
5067: # -------------------------------------------------------------- dump interface
5068:
5069: sub dump {
5070: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5071: if (!$udomain) { $udomain=$env{'user.domain'}; }
5072: if (!$uname) { $uname=$env{'user.name'}; }
5073: my $uhome=&homeserver($uname,$udomain);
5074: if ($regexp) {
5075: $regexp=&escape($regexp);
5076: } else {
5077: $regexp='.';
5078: }
5079: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5080: my @pairs=split(/\&/,$rep);
5081: my %returnhash=();
5082: if (!($rep =~ /^error/ )) {
5083: foreach my $item (@pairs) {
5084: my ($key,$value)=split(/=/,$item,2);
5085: $key = &unescape($key);
5086: next if ($key =~ /^error: 2 /);
5087: $returnhash{$key}=&thaw_unescape($value);
5088: }
5089: }
5090: return %returnhash;
5091: }
5092:
5093:
5094: # --------------------------------------------------------- dumpstore interface
5095:
5096: sub dumpstore {
5097: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5098: if (!$udomain) { $udomain=$env{'user.domain'}; }
5099: if (!$uname) { $uname=$env{'user.name'}; }
5100: my $uhome=&homeserver($uname,$udomain);
5101: if ($regexp) {
5102: $regexp=&escape($regexp);
5103: } else {
5104: $regexp='.';
5105: }
5106: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5107: my @pairs=split(/\&/,$rep);
5108: my %returnhash=();
5109: foreach my $item (@pairs) {
5110: my ($key,$value)=split(/=/,$item,2);
5111: next if ($key =~ /^error: 2 /);
5112: $returnhash{$key}=&thaw_unescape($value);
5113: }
5114: return %returnhash;
5115: }
5116:
5117: # -------------------------------------------------------------- keys interface
5118:
5119: sub getkeys {
5120: my ($namespace,$udomain,$uname)=@_;
5121: if (!$udomain) { $udomain=$env{'user.domain'}; }
5122: if (!$uname) { $uname=$env{'user.name'}; }
5123: my $uhome=&homeserver($uname,$udomain);
5124: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5125: my @keyarray=();
5126: foreach my $key (split(/\&/,$rep)) {
5127: next if ($key =~ /^error: 2 /);
5128: push(@keyarray,&unescape($key));
5129: }
5130: return @keyarray;
5131: }
5132:
5133: # --------------------------------------------------------------- currentdump
5134: sub currentdump {
5135: my ($courseid,$sdom,$sname)=@_;
5136: $courseid = $env{'request.course.id'} if (! defined($courseid));
5137: $sdom = $env{'user.domain'} if (! defined($sdom));
5138: $sname = $env{'user.name'} if (! defined($sname));
5139: my $uhome = &homeserver($sname,$sdom);
5140: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5141: return if ($rep =~ /^(error:|no_such_host)/);
5142: #
5143: my %returnhash=();
5144: #
5145: if ($rep eq "unknown_cmd") {
5146: # an old lond will not know currentdump
5147: # Do a dump and make it look like a currentdump
5148: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5149: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5150: my %hash = @tmp;
5151: @tmp=();
5152: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5153: } else {
5154: my @pairs=split(/\&/,$rep);
5155: foreach my $pair (@pairs) {
5156: my ($key,$value)=split(/=/,$pair,2);
5157: my ($symb,$param) = split(/:/,$key);
5158: $returnhash{&unescape($symb)}->{&unescape($param)} =
5159: &thaw_unescape($value);
5160: }
5161: }
5162: return %returnhash;
5163: }
5164:
5165: sub convert_dump_to_currentdump{
5166: my %hash = %{shift()};
5167: my %returnhash;
5168: # Code ripped from lond, essentially. The only difference
5169: # here is the unescaping done by lonnet::dump(). Conceivably
5170: # we might run in to problems with parameter names =~ /^v\./
5171: while (my ($key,$value) = each(%hash)) {
5172: my ($v,$symb,$param) = split(/:/,$key);
5173: $symb = &unescape($symb);
5174: $param = &unescape($param);
5175: next if ($v eq 'version' || $symb eq 'keys');
5176: next if (exists($returnhash{$symb}) &&
5177: exists($returnhash{$symb}->{$param}) &&
5178: $returnhash{$symb}->{'v.'.$param} > $v);
5179: $returnhash{$symb}->{$param}=$value;
5180: $returnhash{$symb}->{'v.'.$param}=$v;
5181: }
5182: #
5183: # Remove all of the keys in the hashes which keep track of
5184: # the version of the parameter.
5185: while (my ($symb,$param_hash) = each(%returnhash)) {
5186: # use a foreach because we are going to delete from the hash.
5187: foreach my $key (keys(%$param_hash)) {
5188: delete($param_hash->{$key}) if ($key =~ /^v\./);
5189: }
5190: }
5191: return \%returnhash;
5192: }
5193:
5194: # ------------------------------------------------------ critical inc interface
5195:
5196: sub cinc {
5197: return &inc(@_,'critical');
5198: }
5199:
5200: # --------------------------------------------------------------- inc interface
5201:
5202: sub inc {
5203: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5204: if (!$udomain) { $udomain=$env{'user.domain'}; }
5205: if (!$uname) { $uname=$env{'user.name'}; }
5206: my $uhome=&homeserver($uname,$udomain);
5207: my $items='';
5208: if (! ref($store)) {
5209: # got a single value, so use that instead
5210: $items = &escape($store).'=&';
5211: } elsif (ref($store) eq 'SCALAR') {
5212: $items = &escape($$store).'=&';
5213: } elsif (ref($store) eq 'ARRAY') {
5214: $items = join('=&',map {&escape($_);} @{$store});
5215: } elsif (ref($store) eq 'HASH') {
5216: while (my($key,$value) = each(%{$store})) {
5217: $items.= &escape($key).'='.&escape($value).'&';
5218: }
5219: }
5220: $items=~s/\&$//;
5221: if ($critical) {
5222: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5223: } else {
5224: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5225: }
5226: }
5227:
5228: # --------------------------------------------------------------- put interface
5229:
5230: sub put {
5231: my ($namespace,$storehash,$udomain,$uname)=@_;
5232: if (!$udomain) { $udomain=$env{'user.domain'}; }
5233: if (!$uname) { $uname=$env{'user.name'}; }
5234: my $uhome=&homeserver($uname,$udomain);
5235: my $items='';
5236: foreach my $item (keys(%$storehash)) {
5237: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5238: }
5239: $items=~s/\&$//;
5240: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5241: }
5242:
5243: # ------------------------------------------------------------ newput interface
5244:
5245: sub newput {
5246: my ($namespace,$storehash,$udomain,$uname)=@_;
5247: if (!$udomain) { $udomain=$env{'user.domain'}; }
5248: if (!$uname) { $uname=$env{'user.name'}; }
5249: my $uhome=&homeserver($uname,$udomain);
5250: my $items='';
5251: foreach my $key (keys(%$storehash)) {
5252: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5253: }
5254: $items=~s/\&$//;
5255: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5256: }
5257:
5258: # --------------------------------------------------------- putstore interface
5259:
5260: sub putstore {
5261: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5262: if (!$udomain) { $udomain=$env{'user.domain'}; }
5263: if (!$uname) { $uname=$env{'user.name'}; }
5264: my $uhome=&homeserver($uname,$udomain);
5265: my $items='';
5266: foreach my $key (keys(%$storehash)) {
5267: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5268: }
5269: $items=~s/\&$//;
5270: my $esc_symb=&escape($symb);
5271: my $esc_v=&escape($version);
5272: my $reply =
5273: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5274: $uhome);
5275: if ($reply eq 'unknown_cmd') {
5276: # gfall back to way things use to be done
5277: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5278: $uname);
5279: }
5280: return $reply;
5281: }
5282:
5283: sub old_putstore {
5284: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5285: if (!$udomain) { $udomain=$env{'user.domain'}; }
5286: if (!$uname) { $uname=$env{'user.name'}; }
5287: my $uhome=&homeserver($uname,$udomain);
5288: my %newstorehash;
5289: foreach my $item (keys(%$storehash)) {
5290: my $key = $version.':'.&escape($symb).':'.$item;
5291: $newstorehash{$key} = $storehash->{$item};
5292: }
5293: my $items='';
5294: my %allitems = ();
5295: foreach my $item (keys(%newstorehash)) {
5296: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5297: my $key = $1.':keys:'.$2;
5298: $allitems{$key} .= $3.':';
5299: }
5300: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5301: }
5302: foreach my $item (keys(%allitems)) {
5303: $allitems{$item} =~ s/\:$//;
5304: $items.= $item.'='.$allitems{$item}.'&';
5305: }
5306: $items=~s/\&$//;
5307: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5308: }
5309:
5310: # ------------------------------------------------------ critical put interface
5311:
5312: sub cput {
5313: my ($namespace,$storehash,$udomain,$uname)=@_;
5314: if (!$udomain) { $udomain=$env{'user.domain'}; }
5315: if (!$uname) { $uname=$env{'user.name'}; }
5316: my $uhome=&homeserver($uname,$udomain);
5317: my $items='';
5318: foreach my $item (keys(%$storehash)) {
5319: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5320: }
5321: $items=~s/\&$//;
5322: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5323: }
5324:
5325: # -------------------------------------------------------------- eget interface
5326:
5327: sub eget {
5328: my ($namespace,$storearr,$udomain,$uname)=@_;
5329: my $items='';
5330: foreach my $item (@$storearr) {
5331: $items.=&escape($item).'&';
5332: }
5333: $items=~s/\&$//;
5334: if (!$udomain) { $udomain=$env{'user.domain'}; }
5335: if (!$uname) { $uname=$env{'user.name'}; }
5336: my $uhome=&homeserver($uname,$udomain);
5337: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5338: my @pairs=split(/\&/,$rep);
5339: my %returnhash=();
5340: my $i=0;
5341: foreach my $item (@$storearr) {
5342: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5343: $i++;
5344: }
5345: return %returnhash;
5346: }
5347:
5348: # ------------------------------------------------------------ tmpput interface
5349: sub tmpput {
5350: my ($storehash,$server,$context)=@_;
5351: my $items='';
5352: foreach my $item (keys(%$storehash)) {
5353: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5354: }
5355: $items=~s/\&$//;
5356: if (defined($context)) {
5357: $items .= ':'.&escape($context);
5358: }
5359: return &reply("tmpput:$items",$server);
5360: }
5361:
5362: # ------------------------------------------------------------ tmpget interface
5363: sub tmpget {
5364: my ($token,$server)=@_;
5365: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5366: my $rep=&reply("tmpget:$token",$server);
5367: my %returnhash;
5368: foreach my $item (split(/\&/,$rep)) {
5369: my ($key,$value)=split(/=/,$item);
5370: next if ($key =~ /^error: 2 /);
5371: $returnhash{&unescape($key)}=&thaw_unescape($value);
5372: }
5373: return %returnhash;
5374: }
5375:
5376: # ------------------------------------------------------------ tmpdel interface
5377: sub tmpdel {
5378: my ($token,$server)=@_;
5379: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5380: return &reply("tmpdel:$token",$server);
5381: }
5382:
5383: # -------------------------------------------------- portfolio access checking
5384:
5385: sub portfolio_access {
5386: my ($requrl) = @_;
5387: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5388: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5389: if ($result) {
5390: my %setters;
5391: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5392: my ($startblock,$endblock) =
5393: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5394: if ($startblock && $endblock) {
5395: return 'B';
5396: }
5397: } else {
5398: my ($startblock,$endblock) =
5399: &Apache::loncommon::blockcheck(\%setters,'port');
5400: if ($startblock && $endblock) {
5401: return 'B';
5402: }
5403: }
5404: }
5405: if ($result eq 'ok') {
5406: return 'F';
5407: } elsif ($result =~ /^[^:]+:guest_/) {
5408: return 'A';
5409: }
5410: return '';
5411: }
5412:
5413: sub get_portfolio_access {
5414: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5415:
5416: if (!ref($access_hash)) {
5417: my $current_perms = &get_portfile_permissions($udom,$unum);
5418: my %access_controls = &get_access_controls($current_perms,$group,
5419: $file_name);
5420: $access_hash = $access_controls{$file_name};
5421: }
5422:
5423: my ($public,$guest,@domains,@users,@courses,@groups);
5424: my $now = time;
5425: if (ref($access_hash) eq 'HASH') {
5426: foreach my $key (keys(%{$access_hash})) {
5427: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5428: if ($start > $now) {
5429: next;
5430: }
5431: if ($end && $end<$now) {
5432: next;
5433: }
5434: if ($scope eq 'public') {
5435: $public = $key;
5436: last;
5437: } elsif ($scope eq 'guest') {
5438: $guest = $key;
5439: } elsif ($scope eq 'domains') {
5440: push(@domains,$key);
5441: } elsif ($scope eq 'users') {
5442: push(@users,$key);
5443: } elsif ($scope eq 'course') {
5444: push(@courses,$key);
5445: } elsif ($scope eq 'group') {
5446: push(@groups,$key);
5447: }
5448: }
5449: if ($public) {
5450: return 'ok';
5451: }
5452: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5453: if ($guest) {
5454: return $guest;
5455: }
5456: } else {
5457: if (@domains > 0) {
5458: foreach my $domkey (@domains) {
5459: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5460: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5461: return 'ok';
5462: }
5463: }
5464: }
5465: }
5466: if (@users > 0) {
5467: foreach my $userkey (@users) {
5468: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5469: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5470: if (ref($item) eq 'HASH') {
5471: if (($item->{'uname'} eq $env{'user.name'}) &&
5472: ($item->{'udom'} eq $env{'user.domain'})) {
5473: return 'ok';
5474: }
5475: }
5476: }
5477: }
5478: }
5479: }
5480: my %roleshash;
5481: my @courses_and_groups = @courses;
5482: push(@courses_and_groups,@groups);
5483: if (@courses_and_groups > 0) {
5484: my (%allgroups,%allroles);
5485: my ($start,$end,$role,$sec,$group);
5486: foreach my $envkey (%env) {
5487: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5488: my $cid = $2.'_'.$3;
5489: if ($1 eq 'gr') {
5490: $group = $4;
5491: $allgroups{$cid}{$group} = $env{$envkey};
5492: } else {
5493: if ($4 eq '') {
5494: $sec = 'none';
5495: } else {
5496: $sec = $4;
5497: }
5498: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5499: }
5500: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5501: my $cid = $2.'_'.$3;
5502: if ($4 eq '') {
5503: $sec = 'none';
5504: } else {
5505: $sec = $4;
5506: }
5507: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5508: }
5509: }
5510: if (keys(%allroles) == 0) {
5511: return;
5512: }
5513: foreach my $key (@courses_and_groups) {
5514: my %content = %{$$access_hash{$key}};
5515: my $cnum = $content{'number'};
5516: my $cdom = $content{'domain'};
5517: my $cid = $cdom.'_'.$cnum;
5518: if (!exists($allroles{$cid})) {
5519: next;
5520: }
5521: foreach my $role_id (keys(%{$content{'roles'}})) {
5522: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5523: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5524: my @status = @{$content{'roles'}{$role_id}{'access'}};
5525: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5526: foreach my $role (keys(%{$allroles{$cid}})) {
5527: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5528: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5529: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5530: if (grep/^all$/,@sections) {
5531: return 'ok';
5532: } else {
5533: if (grep/^$sec$/,@sections) {
5534: return 'ok';
5535: }
5536: }
5537: }
5538: }
5539: if (keys(%{$allgroups{$cid}}) == 0) {
5540: if (grep/^none$/,@groups) {
5541: return 'ok';
5542: }
5543: } else {
5544: if (grep/^all$/,@groups) {
5545: return 'ok';
5546: }
5547: foreach my $group (keys(%{$allgroups{$cid}})) {
5548: if (grep/^$group$/,@groups) {
5549: return 'ok';
5550: }
5551: }
5552: }
5553: }
5554: }
5555: }
5556: }
5557: }
5558: if ($guest) {
5559: return $guest;
5560: }
5561: }
5562: }
5563: return;
5564: }
5565:
5566: sub course_group_datechecker {
5567: my ($dates,$now,$status) = @_;
5568: my ($start,$end) = split(/\./,$dates);
5569: if (!$start && !$end) {
5570: return 'ok';
5571: }
5572: if (grep/^active$/,@{$status}) {
5573: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5574: return 'ok';
5575: }
5576: }
5577: if (grep/^previous$/,@{$status}) {
5578: if ($end > $now ) {
5579: return 'ok';
5580: }
5581: }
5582: if (grep/^future$/,@{$status}) {
5583: if ($start > $now) {
5584: return 'ok';
5585: }
5586: }
5587: return;
5588: }
5589:
5590: sub parse_portfolio_url {
5591: my ($url) = @_;
5592:
5593: my ($type,$udom,$unum,$group,$file_name);
5594:
5595: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5596: $type = 1;
5597: $udom = $1;
5598: $unum = $2;
5599: $file_name = $3;
5600: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5601: $type = 2;
5602: $udom = $1;
5603: $unum = $2;
5604: $group = $3;
5605: $file_name = $3.'/'.$4;
5606: }
5607: if (wantarray) {
5608: return ($type,$udom,$unum,$file_name,$group);
5609: }
5610: return $type;
5611: }
5612:
5613: sub is_portfolio_url {
5614: my ($url) = @_;
5615: return scalar(&parse_portfolio_url($url));
5616: }
5617:
5618: sub is_portfolio_file {
5619: my ($file) = @_;
5620: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5621: return 1;
5622: }
5623: return;
5624: }
5625:
5626: sub usertools_access {
5627: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5628: my ($access,%tools);
5629: if ($context eq '') {
5630: $context = 'tools';
5631: }
5632: if ($context eq 'requestcourses') {
5633: %tools = (
5634: official => 1,
5635: unofficial => 1,
5636: community => 1,
5637: );
5638: } else {
5639: %tools = (
5640: aboutme => 1,
5641: blog => 1,
5642: portfolio => 1,
5643: );
5644: }
5645: return if (!defined($tools{$tool}));
5646:
5647: if ((!defined($udom)) || (!defined($uname))) {
5648: $udom = $env{'user.domain'};
5649: $uname = $env{'user.name'};
5650: }
5651:
5652: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5653: if ($action ne 'reload') {
5654: if ($context eq 'requestcourses') {
5655: return $env{'environment.canrequest.'.$tool};
5656: } else {
5657: return $env{'environment.availabletools.'.$tool};
5658: }
5659: }
5660: }
5661:
5662: my ($toolstatus,$inststatus);
5663:
5664: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5665: ($action ne 'reload')) {
5666: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5667: $inststatus = $env{'environment.inststatus'};
5668: } else {
5669: if (ref($userenvref) eq 'HASH') {
5670: $toolstatus = $userenvref->{$context.'.'.$tool};
5671: $inststatus = $userenvref->{'inststatus'};
5672: } else {
5673: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5674: $toolstatus = $userenv{$context.'.'.$tool};
5675: $inststatus = $userenv{'inststatus'};
5676: }
5677: }
5678:
5679: if ($toolstatus ne '') {
5680: if ($toolstatus) {
5681: $access = 1;
5682: } else {
5683: $access = 0;
5684: }
5685: return $access;
5686: }
5687:
5688: my ($is_adv,%domdef);
5689: if (ref($is_advref) eq 'HASH') {
5690: $is_adv = $is_advref->{'is_adv'};
5691: } else {
5692: $is_adv = &is_advanced_user($udom,$uname);
5693: }
5694: if (ref($domdefref) eq 'HASH') {
5695: %domdef = %{$domdefref};
5696: } else {
5697: %domdef = &get_domain_defaults($udom);
5698: }
5699: if (ref($domdef{$tool}) eq 'HASH') {
5700: if ($is_adv) {
5701: if ($domdef{$tool}{'_LC_adv'} ne '') {
5702: if ($domdef{$tool}{'_LC_adv'}) {
5703: $access = 1;
5704: } else {
5705: $access = 0;
5706: }
5707: return $access;
5708: }
5709: }
5710: if ($inststatus ne '') {
5711: my ($hasaccess,$hasnoaccess);
5712: foreach my $affiliation (split(/:/,$inststatus)) {
5713: if ($domdef{$tool}{$affiliation} ne '') {
5714: if ($domdef{$tool}{$affiliation}) {
5715: $hasaccess = 1;
5716: } else {
5717: $hasnoaccess = 1;
5718: }
5719: }
5720: }
5721: if ($hasaccess || $hasnoaccess) {
5722: if ($hasaccess) {
5723: $access = 1;
5724: } elsif ($hasnoaccess) {
5725: $access = 0;
5726: }
5727: return $access;
5728: }
5729: } else {
5730: if ($domdef{$tool}{'default'} ne '') {
5731: if ($domdef{$tool}{'default'}) {
5732: $access = 1;
5733: } elsif ($domdef{$tool}{'default'} == 0) {
5734: $access = 0;
5735: }
5736: return $access;
5737: }
5738: }
5739: } else {
5740: if ($context eq 'tools') {
5741: $access = 1;
5742: } else {
5743: $access = 0;
5744: }
5745: return $access;
5746: }
5747: }
5748:
5749: sub is_course_owner {
5750: my ($cdom,$cnum,$udom,$uname) = @_;
5751: if (($udom eq '') || ($uname eq '')) {
5752: $udom = $env{'user.domain'};
5753: $uname = $env{'user.name'};
5754: }
5755: unless (($udom eq '') || ($uname eq '')) {
5756: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5757: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5758: return 1;
5759: } else {
5760: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5761: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5762: return 1;
5763: }
5764: }
5765: }
5766: }
5767: return;
5768: }
5769:
5770: sub is_advanced_user {
5771: my ($udom,$uname) = @_;
5772: if ($udom ne '' && $uname ne '') {
5773: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5774: if (wantarray) {
5775: return ($env{'user.adv'},$env{'user.author'});
5776: } else {
5777: return $env{'user.adv'};
5778: }
5779: }
5780: }
5781: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5782: my %allroles;
5783: my ($is_adv,$is_author);
5784: foreach my $role (keys(%roleshash)) {
5785: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5786: my $area = '/'.$tdomain.'/'.$trest;
5787: if ($sec ne '') {
5788: $area .= '/'.$sec;
5789: }
5790: if (($area ne '') && ($trole ne '')) {
5791: my $spec=$trole.'.'.$area;
5792: if ($trole =~ /^cr\//) {
5793: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5794: } elsif ($trole ne 'gr') {
5795: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5796: }
5797: if ($trole eq 'au') {
5798: $is_author = 1;
5799: }
5800: }
5801: }
5802: foreach my $role (keys(%allroles)) {
5803: last if ($is_adv);
5804: foreach my $item (split(/:/,$allroles{$role})) {
5805: if ($item ne '') {
5806: my ($privilege,$restrictions)=split(/&/,$item);
5807: if ($privilege eq 'adv') {
5808: $is_adv = 1;
5809: last;
5810: }
5811: }
5812: }
5813: }
5814: if (wantarray) {
5815: return ($is_adv,$is_author);
5816: }
5817: return $is_adv;
5818: }
5819:
5820: sub check_can_request {
5821: my ($dom,$can_request,$request_domains) = @_;
5822: my $canreq = 0;
5823: my ($types,$typename) = &Apache::loncommon::course_types();
5824: my @options = ('approval','validate','autolimit');
5825: my $optregex = join('|',@options);
5826: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5827: foreach my $type (@{$types}) {
5828: if (&usertools_access($env{'user.name'},
5829: $env{'user.domain'},
5830: $type,undef,'requestcourses')) {
5831: $canreq ++;
5832: if (ref($request_domains) eq 'HASH') {
5833: push(@{$request_domains->{$type}},$env{'user.domain'});
5834: }
5835: if ($dom eq $env{'user.domain'}) {
5836: $can_request->{$type} = 1;
5837: }
5838: }
5839: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5840: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5841: if (@curr > 0) {
5842: foreach my $item (@curr) {
5843: if (ref($request_domains) eq 'HASH') {
5844: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5845: if ($otherdom ne '') {
5846: if (ref($request_domains->{$type}) eq 'ARRAY') {
5847: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5848: push(@{$request_domains->{$type}},$otherdom);
5849: }
5850: } else {
5851: push(@{$request_domains->{$type}},$otherdom);
5852: }
5853: }
5854: }
5855: }
5856: unless($dom eq $env{'user.domain'}) {
5857: $canreq ++;
5858: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5859: $can_request->{$type} = 1;
5860: }
5861: }
5862: }
5863: }
5864: }
5865: }
5866: return $canreq;
5867: }
5868:
5869: # ---------------------------------------------- Custom access rule evaluation
5870:
5871: sub customaccess {
5872: my ($priv,$uri)=@_;
5873: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5874: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5875: $udom = &LONCAPA::clean_domain($udom);
5876: $ucrs = &LONCAPA::clean_username($ucrs);
5877: my $access=0;
5878: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5879: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5880: if ($type eq 'user') {
5881: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5882: my ($tdom,$tuname)=split(m{/},$scope);
5883: if ($tdom) {
5884: if ($tdom ne $env{'user.domain'}) { next; }
5885: }
5886: if ($tuname) {
5887: if ($tuname ne $env{'user.name'}) { next; }
5888: }
5889: $access=($effect eq 'allow');
5890: last;
5891: }
5892: } else {
5893: if ($role) {
5894: if ($role ne $urole) { next; }
5895: }
5896: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5897: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5898: if ($tdom) {
5899: if ($tdom ne $udom) { next; }
5900: }
5901: if ($tcrs) {
5902: if ($tcrs ne $ucrs) { next; }
5903: }
5904: if ($tsec) {
5905: if ($tsec ne $usec) { next; }
5906: }
5907: $access=($effect eq 'allow');
5908: last;
5909: }
5910: if ($realm eq '' && $role eq '') {
5911: $access=($effect eq 'allow');
5912: }
5913: }
5914: }
5915: return $access;
5916: }
5917:
5918: # ------------------------------------------------- Check for a user privilege
5919:
5920: sub allowed {
5921: my ($priv,$uri,$symb,$role)=@_;
5922: my $ver_orguri=$uri;
5923: $uri=&deversion($uri);
5924: my $orguri=$uri;
5925: $uri=&declutter($uri);
5926:
5927: if ($priv eq 'evb') {
5928: # Evade communication block restrictions for specified role in a course
5929: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5930: return $1;
5931: } else {
5932: return;
5933: }
5934: }
5935:
5936: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5937: # Free bre access to adm and meta resources
5938: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5939: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5940: && ($priv eq 'bre')) {
5941: return 'F';
5942: }
5943:
5944: # Free bre access to user's own portfolio contents
5945: my ($space,$domain,$name,@dir)=split('/',$uri);
5946: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5947: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5948: my %setters;
5949: my ($startblock,$endblock) =
5950: &Apache::loncommon::blockcheck(\%setters,'port');
5951: if ($startblock && $endblock) {
5952: return 'B';
5953: } else {
5954: return 'F';
5955: }
5956: }
5957:
5958: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5959: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5960: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5961: if (exists($env{'request.course.id'})) {
5962: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5963: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5964: if (($domain eq $cdom) && ($name eq $cnum)) {
5965: my $courseprivid=$env{'request.course.id'};
5966: $courseprivid=~s/\_/\//;
5967: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5968: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5969: return $1;
5970: } else {
5971: if ($env{'request.course.sec'}) {
5972: $courseprivid.='/'.$env{'request.course.sec'};
5973: }
5974: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5975: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5976: return $2;
5977: }
5978: }
5979: }
5980: }
5981: }
5982:
5983: # Free bre to public access
5984:
5985: if ($priv eq 'bre') {
5986: my $copyright=&metadata($uri,'copyright');
5987: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5988: return 'F';
5989: }
5990: if ($copyright eq 'priv') {
5991: $uri=~/([^\/]+)\/([^\/]+)\//;
5992: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5993: return '';
5994: }
5995: }
5996: if ($copyright eq 'domain') {
5997: $uri=~/([^\/]+)\/([^\/]+)\//;
5998: unless (($env{'user.domain'} eq $1) ||
5999: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6000: return '';
6001: }
6002: }
6003: if ($env{'request.role'}=~ /li\.\//) {
6004: # Library role, so allow browsing of resources in this domain.
6005: return 'F';
6006: }
6007: if ($copyright eq 'custom') {
6008: unless (&customaccess($priv,$uri)) { return ''; }
6009: }
6010: }
6011: # Domain coordinator is trying to create a course
6012: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6013: # uri is the requested domain in this case.
6014: # comparison to 'request.role.domain' shows if the user has selected
6015: # a role of dc for the domain in question.
6016: return 'F' if ($uri eq $env{'request.role.domain'});
6017: }
6018:
6019: my $thisallowed='';
6020: my $statecond=0;
6021: my $courseprivid='';
6022:
6023: my $ownaccess;
6024: # Community Coordinator or Assistant Co-author browsing resource space.
6025: if (($priv eq 'bro') && ($env{'user.author'})) {
6026: if ($uri eq '') {
6027: $ownaccess = 1;
6028: } else {
6029: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6030: my $udom = $env{'user.domain'};
6031: my $uname = $env{'user.name'};
6032: if ($uri =~ m{^\Q$udom\E/?$}) {
6033: $ownaccess = 1;
6034: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6035: unless ($uri =~ m{\.\./}) {
6036: $ownaccess = 1;
6037: }
6038: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6039: my $now = time;
6040: if ($uri =~ m{^([^/]+)/?$}) {
6041: my $adom = $1;
6042: foreach my $key (keys(%env)) {
6043: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6044: my ($start,$end) = split('.',$env{$key});
6045: if (($now >= $start) && (!$end || $end < $now)) {
6046: $ownaccess = 1;
6047: last;
6048: }
6049: }
6050: }
6051: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6052: my $adom = $1;
6053: my $aname = $2;
6054: foreach my $role ('ca','aa') {
6055: if ($env{"user.role.$role./$adom/$aname"}) {
6056: my ($start,$end) =
6057: split('.',$env{"user.role.$role./$adom/$aname"});
6058: if (($now >= $start) && (!$end || $end < $now)) {
6059: $ownaccess = 1;
6060: last;
6061: }
6062: }
6063: }
6064: }
6065: }
6066: }
6067: }
6068: }
6069:
6070: # Course
6071:
6072: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6073: unless (($priv eq 'bro') && (!$ownaccess)) {
6074: $thisallowed.=$1;
6075: }
6076: }
6077:
6078: # Domain
6079:
6080: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6081: =~/\Q$priv\E\&([^\:]*)/) {
6082: unless (($priv eq 'bro') && (!$ownaccess)) {
6083: $thisallowed.=$1;
6084: }
6085: }
6086:
6087: # User who is not author or co-author might still be able to edit
6088: # resource of an author in the domain (e.g., if Domain Coordinator).
6089: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6090: (&allowed('mdc',$env{'request.course.id'}))) {
6091: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6092: $thisallowed.=$1;
6093: }
6094: }
6095:
6096: # Course: uri itself is a course
6097: my $courseuri=$uri;
6098: $courseuri=~s/\_(\d)/\/$1/;
6099: $courseuri=~s/^([^\/])/\/$1/;
6100:
6101: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6102: =~/\Q$priv\E\&([^\:]*)/) {
6103: unless (($priv eq 'bro') && (!$ownaccess)) {
6104: $thisallowed.=$1;
6105: }
6106: }
6107:
6108: # URI is an uploaded document for this course, default permissions don't matter
6109: # not allowing 'edit' access (editupload) to uploaded course docs
6110: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6111: $thisallowed='';
6112: my ($match)=&is_on_map($uri);
6113: if ($match) {
6114: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6115: =~/\Q$priv\E\&([^\:]*)/) {
6116: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6117: if (@blockers > 0) {
6118: $thisallowed = 'B';
6119: } else {
6120: $thisallowed.=$1;
6121: }
6122: }
6123: } else {
6124: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6125: if ($refuri) {
6126: if ($refuri =~ m|^/adm/|) {
6127: $thisallowed='F';
6128: } else {
6129: $refuri=&declutter($refuri);
6130: my ($match) = &is_on_map($refuri);
6131: if ($match) {
6132: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6133: if (@blockers > 0) {
6134: $thisallowed = 'B';
6135: } else {
6136: $thisallowed='F';
6137: }
6138: }
6139: }
6140: }
6141: }
6142: }
6143:
6144: if ($priv eq 'bre'
6145: && $thisallowed ne 'F'
6146: && $thisallowed ne '2'
6147: && &is_portfolio_url($uri)) {
6148: $thisallowed = &portfolio_access($uri);
6149: }
6150:
6151: # Full access at system, domain or course-wide level? Exit.
6152: if ($thisallowed=~/F/) {
6153: return 'F';
6154: }
6155:
6156: # If this is generating or modifying users, exit with special codes
6157:
6158: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6159: if (($priv eq 'cca') || ($priv eq 'caa')) {
6160: my ($audom,$auname)=split('/',$uri);
6161: # no author name given, so this just checks on the general right to make a co-author in this domain
6162: unless ($auname) { return $thisallowed; }
6163: # an author name is given, so we are about to actually make a co-author for a certain account
6164: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6165: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6166: ($audom ne $env{'request.role.domain'}))) { return ''; }
6167: }
6168: return $thisallowed;
6169: }
6170: #
6171: # Gathered so far: system, domain and course wide privileges
6172: #
6173: # Course: See if uri or referer is an individual resource that is part of
6174: # the course
6175:
6176: if ($env{'request.course.id'}) {
6177:
6178: $courseprivid=$env{'request.course.id'};
6179: if ($env{'request.course.sec'}) {
6180: $courseprivid.='/'.$env{'request.course.sec'};
6181: }
6182: $courseprivid=~s/\_/\//;
6183: my $checkreferer=1;
6184: my ($match,$cond)=&is_on_map($uri);
6185: if ($match) {
6186: $statecond=$cond;
6187: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6188: =~/\Q$priv\E\&([^\:]*)/) {
6189: my $value = $1;
6190: if ($priv eq 'bre') {
6191: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6192: if (@blockers > 0) {
6193: $thisallowed = 'B';
6194: } else {
6195: $thisallowed.=$value;
6196: }
6197: } else {
6198: $thisallowed.=$value;
6199: }
6200: $checkreferer=0;
6201: }
6202: }
6203:
6204: if ($checkreferer) {
6205: my $refuri=$env{'httpref.'.$orguri};
6206: unless ($refuri) {
6207: foreach my $key (keys(%env)) {
6208: if ($key=~/^httpref\..*\*/) {
6209: my $pattern=$key;
6210: $pattern=~s/^httpref\.\/res\///;
6211: $pattern=~s/\*/\[\^\/\]\+/g;
6212: $pattern=~s/\//\\\//g;
6213: if ($orguri=~/$pattern/) {
6214: $refuri=$env{$key};
6215: }
6216: }
6217: }
6218: }
6219:
6220: if ($refuri) {
6221: $refuri=&declutter($refuri);
6222: my ($match,$cond)=&is_on_map($refuri);
6223: if ($match) {
6224: my $refstatecond=$cond;
6225: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6226: =~/\Q$priv\E\&([^\:]*)/) {
6227: my $value = $1;
6228: if ($priv eq 'bre') {
6229: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6230: if (@blockers > 0) {
6231: $thisallowed = 'B';
6232: } else {
6233: $thisallowed.=$value;
6234: }
6235: } else {
6236: $thisallowed.=$value;
6237: }
6238: $uri=$refuri;
6239: $statecond=$refstatecond;
6240: }
6241: }
6242: }
6243: }
6244: }
6245:
6246: #
6247: # Gathered now: all privileges that could apply, and condition number
6248: #
6249: #
6250: # Full or no access?
6251: #
6252:
6253: if ($thisallowed=~/F/) {
6254: return 'F';
6255: }
6256:
6257: unless ($thisallowed) {
6258: return '';
6259: }
6260:
6261: # Restrictions exist, deal with them
6262: #
6263: # C:according to course preferences
6264: # R:according to resource settings
6265: # L:unless locked
6266: # X:according to user session state
6267: #
6268:
6269: # Possibly locked functionality, check all courses
6270: # Locks might take effect only after 10 minutes cache expiration for other
6271: # courses, and 2 minutes for current course
6272:
6273: my $envkey;
6274: if ($thisallowed=~/L/) {
6275: foreach $envkey (keys(%env)) {
6276: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6277: my $courseid=$2;
6278: my $roleid=$1.'.'.$2;
6279: $courseid=~s/^\///;
6280: my $expiretime=600;
6281: if ($env{'request.role'} eq $roleid) {
6282: $expiretime=120;
6283: }
6284: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6285: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6286: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6287: &coursedescription($courseid,{'freshen_cache' => 1});
6288: }
6289: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6290: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6291: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6292: &log($env{'user.domain'},$env{'user.name'},
6293: $env{'user.home'},
6294: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6295: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6296: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6297: return '';
6298: }
6299: }
6300: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6301: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6302: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6303: &log($env{'user.domain'},$env{'user.name'},
6304: $env{'user.home'},
6305: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6306: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6307: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6308: return '';
6309: }
6310: }
6311: }
6312: }
6313: }
6314:
6315: #
6316: # Rest of the restrictions depend on selected course
6317: #
6318:
6319: unless ($env{'request.course.id'}) {
6320: if ($thisallowed eq 'A') {
6321: return 'A';
6322: } elsif ($thisallowed eq 'B') {
6323: return 'B';
6324: } else {
6325: return '1';
6326: }
6327: }
6328:
6329: #
6330: # Now user is definitely in a course
6331: #
6332:
6333:
6334: # Course preferences
6335:
6336: if ($thisallowed=~/C/) {
6337: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6338: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6339: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6340: =~/\Q$rolecode\E/) {
6341: if (($priv ne 'pch') && ($priv ne 'plc')) {
6342: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6343: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6344: $env{'request.course.id'});
6345: }
6346: return '';
6347: }
6348:
6349: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6350: =~/\Q$unamedom\E/) {
6351: if (($priv ne 'pch') && ($priv ne 'plc')) {
6352: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6353: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6354: $env{'request.course.id'});
6355: }
6356: return '';
6357: }
6358: }
6359:
6360: # Resource preferences
6361:
6362: if ($thisallowed=~/R/) {
6363: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6364: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6365: if (($priv ne 'pch') && ($priv ne 'plc')) {
6366: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6367: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6368: }
6369: return '';
6370: }
6371: }
6372:
6373: # Restricted by state or randomout?
6374:
6375: if ($thisallowed=~/X/) {
6376: if ($env{'acc.randomout'}) {
6377: if (!$symb) { $symb=&symbread($uri,1); }
6378: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6379: return '';
6380: }
6381: }
6382: if (&condval($statecond)) {
6383: return '2';
6384: } else {
6385: return '';
6386: }
6387: }
6388:
6389: if ($thisallowed eq 'A') {
6390: return 'A';
6391: } elsif ($thisallowed eq 'B') {
6392: return 'B';
6393: }
6394: return 'F';
6395: }
6396:
6397: sub get_comm_blocks {
6398: my ($cdom,$cnum) = @_;
6399: if ($cdom eq '' || $cnum eq '') {
6400: return unless ($env{'request.course.id'});
6401: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6402: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6403: }
6404: my %commblocks;
6405: my $hashid=$cdom.'_'.$cnum;
6406: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6407: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6408: %commblocks = %{$blocksref};
6409: } else {
6410: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6411: my $cachetime = 600;
6412: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6413: }
6414: return %commblocks;
6415: }
6416:
6417: sub has_comm_blocking {
6418: my ($priv,$symb,$uri,$blocks) = @_;
6419: return unless ($env{'request.course.id'});
6420: return unless ($priv eq 'bre');
6421: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6422: my %commblocks;
6423: if (ref($blocks) eq 'HASH') {
6424: %commblocks = %{$blocks};
6425: } else {
6426: %commblocks = &get_comm_blocks();
6427: }
6428: return unless (keys(%commblocks) > 0);
6429: if (!$symb) { $symb=&symbread($uri,1); }
6430: my ($map,$resid,undef)=&decode_symb($symb);
6431: my %tocheck = (
6432: maps => $map,
6433: resources => $symb,
6434: );
6435: my @blockers;
6436: my $now = time;
6437: my $navmap = Apache::lonnavmaps::navmap->new();
6438: foreach my $block (keys(%commblocks)) {
6439: if ($block =~ /^(\d+)____(\d+)$/) {
6440: my ($start,$end) = ($1,$2);
6441: if ($start <= $now && $end >= $now) {
6442: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6443: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6444: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6445: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6446: unless (grep(/^\Q$block\E$/,@blockers)) {
6447: push(@blockers,$block);
6448: }
6449: }
6450: }
6451: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6452: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6453: unless (grep(/^\Q$block\E$/,@blockers)) {
6454: push(@blockers,$block);
6455: }
6456: }
6457: }
6458: }
6459: }
6460: }
6461: } elsif ($block =~ /^firstaccess____(.+)$/) {
6462: my $item = $1;
6463: my @to_test;
6464: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6465: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6466: my $check_interval;
6467: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6468: my @interval;
6469: my $type = 'map';
6470: if ($item eq 'course') {
6471: $type = 'course';
6472: @interval=&EXT("resource.0.interval");
6473: } else {
6474: if ($item =~ /___\d+___/) {
6475: $type = 'resource';
6476: @interval=&EXT("resource.0.interval",$item);
6477: if (ref($navmap)) {
6478: my $res = $navmap->getBySymb($item);
6479: push(@to_test,$res);
6480: }
6481: } else {
6482: my $mapsymb = &symbread($item,1);
6483: if ($mapsymb) {
6484: if (ref($navmap)) {
6485: my $mapres = $navmap->getBySymb($mapsymb);
6486: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6487: foreach my $res (@to_test) {
6488: my $symb = $res->symb();
6489: next if ($symb eq $mapsymb);
6490: if ($symb ne '') {
6491: @interval=&EXT("resource.0.interval",$symb);
6492: last;
6493: }
6494: }
6495: }
6496: }
6497: }
6498: }
6499: if ($interval[0] =~ /\d+/) {
6500: my $first_access;
6501: if ($type eq 'resource') {
6502: $first_access=&get_first_access($interval[1],$item);
6503: } elsif ($type eq 'map') {
6504: $first_access=&get_first_access($interval[1],undef,$item);
6505: } else {
6506: $first_access=&get_first_access($interval[1]);
6507: }
6508: if ($first_access) {
6509: my $timesup = $first_access+$interval[0];
6510: if ($timesup > $now) {
6511: foreach my $res (@to_test) {
6512: if ($res->is_problem()) {
6513: if ($res->completable()) {
6514: unless (grep(/^\Q$block\E$/,@blockers)) {
6515: push(@blockers,$block);
6516: }
6517: last;
6518: }
6519: }
6520: }
6521: }
6522: }
6523: }
6524: }
6525: }
6526: }
6527: }
6528: }
6529: return @blockers;
6530: }
6531:
6532: sub check_docs_block {
6533: my ($docsblock,$tocheck) =@_;
6534: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6535: return;
6536: }
6537: if (ref($docsblock->{'maps'}) eq 'HASH') {
6538: if ($tocheck->{'maps'}) {
6539: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6540: return 1;
6541: }
6542: }
6543: }
6544: if (ref($docsblock->{'resources'}) eq 'HASH') {
6545: if ($tocheck->{'resources'}) {
6546: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6547: return 1;
6548: }
6549: }
6550: }
6551: return;
6552: }
6553:
6554: #
6555: # Removes the versino from a URI and
6556: # splits it in to its filename and path to the filename.
6557: # Seems like File::Basename could have done this more clearly.
6558: # Parameters:
6559: # $uri - input URI
6560: # Returns:
6561: # Two element list consisting of
6562: # $pathname - the URI up to and excluding the trailing /
6563: # $filename - The part of the URI following the last /
6564: # NOTE:
6565: # Another realization of this is simply:
6566: # use File::Basename;
6567: # ...
6568: # $uri = shift;
6569: # $filename = basename($uri);
6570: # $path = dirname($uri);
6571: # return ($filename, $path);
6572: #
6573: # The implementation below is probably faster however.
6574: #
6575: sub split_uri_for_cond {
6576: my $uri=&deversion(&declutter(shift));
6577: my @uriparts=split(/\//,$uri);
6578: my $filename=pop(@uriparts);
6579: my $pathname=join('/',@uriparts);
6580: return ($pathname,$filename);
6581: }
6582: # --------------------------------------------------- Is a resource on the map?
6583:
6584: sub is_on_map {
6585: my ($pathname,$filename) = &split_uri_for_cond(shift);
6586: #Trying to find the conditional for the file
6587: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6588: /\&\Q$filename\E\:([\d\|]+)\&/);
6589: if ($match) {
6590: return (1,$1);
6591: } else {
6592: return (0,0);
6593: }
6594: }
6595:
6596: # --------------------------------------------------------- Get symb from alias
6597:
6598: sub get_symb_from_alias {
6599: my $symb=shift;
6600: my ($map,$resid,$url)=&decode_symb($symb);
6601: # Already is a symb
6602: if ($url) { return $symb; }
6603: # Must be an alias
6604: my $aliassymb='';
6605: my %bighash;
6606: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6607: &GDBM_READER(),0640)) {
6608: my $rid=$bighash{'mapalias_'.$symb};
6609: if ($rid) {
6610: my ($mapid,$resid)=split(/\./,$rid);
6611: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6612: $resid,$bighash{'src_'.$rid});
6613: }
6614: untie %bighash;
6615: }
6616: return $aliassymb;
6617: }
6618:
6619: # ----------------------------------------------------------------- Define Role
6620:
6621: sub definerole {
6622: if (allowed('mcr','/')) {
6623: my ($rolename,$sysrole,$domrole,$courole)=@_;
6624: foreach my $role (split(':',$sysrole)) {
6625: my ($crole,$cqual)=split(/\&/,$role);
6626: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6627: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6628: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6629: return "refused:s:$crole&$cqual";
6630: }
6631: }
6632: }
6633: foreach my $role (split(':',$domrole)) {
6634: my ($crole,$cqual)=split(/\&/,$role);
6635: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6636: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6637: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6638: return "refused:d:$crole&$cqual";
6639: }
6640: }
6641: }
6642: foreach my $role (split(':',$courole)) {
6643: my ($crole,$cqual)=split(/\&/,$role);
6644: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6645: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6646: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6647: return "refused:c:$crole&$cqual";
6648: }
6649: }
6650: }
6651: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6652: "$env{'user.domain'}:$env{'user.name'}:".
6653: "rolesdef_$rolename=".
6654: escape($sysrole.'_'.$domrole.'_'.$courole);
6655: return reply($command,$env{'user.home'});
6656: } else {
6657: return 'refused';
6658: }
6659: }
6660:
6661: # ---------------- Make a metadata query against the network of library servers
6662:
6663: sub metadata_query {
6664: my ($query,$custom,$customshow,$server_array)=@_;
6665: my %rhash;
6666: my %libserv = &all_library();
6667: my @server_list = (defined($server_array) ? @$server_array
6668: : keys(%libserv) );
6669: for my $server (@server_list) {
6670: unless ($custom or $customshow) {
6671: my $reply=&reply("querysend:".&escape($query),$server);
6672: $rhash{$server}=$reply;
6673: }
6674: else {
6675: my $reply=&reply("querysend:".&escape($query).':'.
6676: &escape($custom).':'.&escape($customshow),
6677: $server);
6678: $rhash{$server}=$reply;
6679: }
6680: }
6681: return \%rhash;
6682: }
6683:
6684: # ----------------------------------------- Send log queries and wait for reply
6685:
6686: sub log_query {
6687: my ($uname,$udom,$query,%filters)=@_;
6688: my $uhome=&homeserver($uname,$udom);
6689: if ($uhome eq 'no_host') { return 'error: no_host'; }
6690: my $uhost=&hostname($uhome);
6691: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6692: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6693: $uhome);
6694: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6695: return get_query_reply($queryid);
6696: }
6697:
6698: # -------------------------- Update MySQL table for portfolio file
6699:
6700: sub update_portfolio_table {
6701: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6702: if ($group ne '') {
6703: $file_name =~s /^\Q$group\E//;
6704: }
6705: my $homeserver = &homeserver($uname,$udom);
6706: my $queryid=
6707: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6708: ':'.&escape($file_name).':'.$action,$homeserver);
6709: my $reply = &get_query_reply($queryid);
6710: return $reply;
6711: }
6712:
6713: # -------------------------- Update MySQL allusers table
6714:
6715: sub update_allusers_table {
6716: my ($uname,$udom,$names) = @_;
6717: my $homeserver = &homeserver($uname,$udom);
6718: my $queryid=
6719: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6720: 'lastname='.&escape($names->{'lastname'}).'%%'.
6721: 'firstname='.&escape($names->{'firstname'}).'%%'.
6722: 'middlename='.&escape($names->{'middlename'}).'%%'.
6723: 'generation='.&escape($names->{'generation'}).'%%'.
6724: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6725: 'id='.&escape($names->{'id'}),$homeserver);
6726: return;
6727: }
6728:
6729: # ------- Request retrieval of institutional classlists for course(s)
6730:
6731: sub fetch_enrollment_query {
6732: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6733: my $homeserver;
6734: my $maxtries = 1;
6735: if ($context eq 'automated') {
6736: $homeserver = $perlvar{'lonHostID'};
6737: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6738: } else {
6739: $homeserver = &homeserver($cnum,$dom);
6740: }
6741: my $host=&hostname($homeserver);
6742: my $cmd = '';
6743: foreach my $affiliate (keys(%{$affiliatesref})) {
6744: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6745: }
6746: $cmd =~ s/%%$//;
6747: $cmd = &escape($cmd);
6748: my $query = 'fetchenrollment';
6749: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6750: unless ($queryid=~/^\Q$host\E\_/) {
6751: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6752: return 'error: '.$queryid;
6753: }
6754: my $reply = &get_query_reply($queryid);
6755: my $tries = 1;
6756: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6757: $reply = &get_query_reply($queryid);
6758: $tries ++;
6759: }
6760: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6761: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6762: } else {
6763: my @responses = split(/:/,$reply);
6764: if ($homeserver eq $perlvar{'lonHostID'}) {
6765: foreach my $line (@responses) {
6766: my ($key,$value) = split(/=/,$line,2);
6767: $$replyref{$key} = $value;
6768: }
6769: } else {
6770: my $pathname = LONCAPA::tempdir();
6771: foreach my $line (@responses) {
6772: my ($key,$value) = split(/=/,$line);
6773: $$replyref{$key} = $value;
6774: if ($value > 0) {
6775: foreach my $item (@{$$affiliatesref{$key}}) {
6776: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6777: my $destname = $pathname.'/'.$filename;
6778: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6779: if ($xml_classlist =~ /^error/) {
6780: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6781: } else {
6782: if ( open(FILE,">$destname") ) {
6783: print FILE &unescape($xml_classlist);
6784: close(FILE);
6785: } else {
6786: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6787: }
6788: }
6789: }
6790: }
6791: }
6792: }
6793: return 'ok';
6794: }
6795: return 'error';
6796: }
6797:
6798: sub get_query_reply {
6799: my $queryid=shift;
6800: my $replyfile=LONCAPA::tempdir().$queryid;
6801: my $reply='';
6802: for (1..100) {
6803: sleep 2;
6804: if (-e $replyfile.'.end') {
6805: if (open(my $fh,$replyfile)) {
6806: $reply = join('',<$fh>);
6807: close($fh);
6808: } else { return 'error: reply_file_error'; }
6809: return &unescape($reply);
6810: }
6811: }
6812: return 'timeout:'.$queryid;
6813: }
6814:
6815: sub courselog_query {
6816: #
6817: # possible filters:
6818: # url: url or symb
6819: # username
6820: # domain
6821: # action: view, submit, grade
6822: # start: timestamp
6823: # end: timestamp
6824: #
6825: my (%filters)=@_;
6826: unless ($env{'request.course.id'}) { return 'no_course'; }
6827: if ($filters{'url'}) {
6828: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6829: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6830: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6831: }
6832: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6833: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6834: return &log_query($cname,$cdom,'courselog',%filters);
6835: }
6836:
6837: sub userlog_query {
6838: #
6839: # possible filters:
6840: # action: log check role
6841: # start: timestamp
6842: # end: timestamp
6843: #
6844: my ($uname,$udom,%filters)=@_;
6845: return &log_query($uname,$udom,'userlog',%filters);
6846: }
6847:
6848: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6849:
6850: sub auto_run {
6851: my ($cnum,$cdom) = @_;
6852: my $response = 0;
6853: my $settings;
6854: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6855: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6856: $settings = $domconfig{'autoenroll'};
6857: if ($settings->{'run'} eq '1') {
6858: $response = 1;
6859: }
6860: } else {
6861: my $homeserver;
6862: if (&is_course($cdom,$cnum)) {
6863: $homeserver = &homeserver($cnum,$cdom);
6864: } else {
6865: $homeserver = &domain($cdom,'primary');
6866: }
6867: if ($homeserver ne 'no_host') {
6868: $response = &reply('autorun:'.$cdom,$homeserver);
6869: }
6870: }
6871: return $response;
6872: }
6873:
6874: sub auto_get_sections {
6875: my ($cnum,$cdom,$inst_coursecode) = @_;
6876: my $homeserver;
6877: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6878: $homeserver = &homeserver($cnum,$cdom);
6879: }
6880: if (!defined($homeserver)) {
6881: if ($cdom =~ /^$match_domain$/) {
6882: $homeserver = &domain($cdom,'primary');
6883: }
6884: }
6885: my @secs;
6886: if (defined($homeserver)) {
6887: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6888: unless ($response eq 'refused') {
6889: @secs = split(/:/,$response);
6890: }
6891: }
6892: return @secs;
6893: }
6894:
6895: sub auto_new_course {
6896: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6897: my $homeserver = &homeserver($cnum,$cdom);
6898: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6899: return $response;
6900: }
6901:
6902: sub auto_validate_courseID {
6903: my ($cnum,$cdom,$inst_course_id) = @_;
6904: my $homeserver = &homeserver($cnum,$cdom);
6905: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6906: return $response;
6907: }
6908:
6909: sub auto_validate_instcode {
6910: my ($cnum,$cdom,$instcode,$owner) = @_;
6911: my ($homeserver,$response);
6912: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6913: $homeserver = &homeserver($cnum,$cdom);
6914: }
6915: if (!defined($homeserver)) {
6916: if ($cdom =~ /^$match_domain$/) {
6917: $homeserver = &domain($cdom,'primary');
6918: }
6919: }
6920: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6921: &escape($instcode).':'.&escape($owner),$homeserver));
6922: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6923: return ($outcome,$description);
6924: }
6925:
6926: sub auto_create_password {
6927: my ($cnum,$cdom,$authparam,$udom) = @_;
6928: my ($homeserver,$response);
6929: my $create_passwd = 0;
6930: my $authchk = '';
6931: if ($udom =~ /^$match_domain$/) {
6932: $homeserver = &domain($udom,'primary');
6933: }
6934: if ($homeserver eq '') {
6935: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6936: $homeserver = &homeserver($cnum,$cdom);
6937: }
6938: }
6939: if ($homeserver eq '') {
6940: $authchk = 'nodomain';
6941: } else {
6942: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6943: if ($response eq 'refused') {
6944: $authchk = 'refused';
6945: } else {
6946: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6947: }
6948: }
6949: return ($authparam,$create_passwd,$authchk);
6950: }
6951:
6952: sub auto_photo_permission {
6953: my ($cnum,$cdom,$students) = @_;
6954: my $homeserver = &homeserver($cnum,$cdom);
6955: my ($outcome,$perm_reqd,$conditions) =
6956: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6957: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6958: return (undef,undef);
6959: }
6960: return ($outcome,$perm_reqd,$conditions);
6961: }
6962:
6963: sub auto_checkphotos {
6964: my ($uname,$udom,$pid) = @_;
6965: my $homeserver = &homeserver($uname,$udom);
6966: my ($result,$resulttype);
6967: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6968: &escape($uname).':'.&escape($pid),
6969: $homeserver));
6970: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6971: return (undef,undef);
6972: }
6973: if ($outcome) {
6974: ($result,$resulttype) = split(/:/,$outcome);
6975: }
6976: return ($result,$resulttype);
6977: }
6978:
6979: sub auto_photochoice {
6980: my ($cnum,$cdom) = @_;
6981: my $homeserver = &homeserver($cnum,$cdom);
6982: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6983: &escape($cdom),
6984: $homeserver)));
6985: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6986: return (undef,undef);
6987: }
6988: return ($update,$comment);
6989: }
6990:
6991: sub auto_photoupdate {
6992: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6993: my $homeserver = &homeserver($cnum,$dom);
6994: my $host=&hostname($homeserver);
6995: my $cmd = '';
6996: my $maxtries = 1;
6997: foreach my $affiliate (keys(%{$affiliatesref})) {
6998: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6999: }
7000: $cmd =~ s/%%$//;
7001: $cmd = &escape($cmd);
7002: my $query = 'institutionalphotos';
7003: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7004: unless ($queryid=~/^\Q$host\E\_/) {
7005: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7006: return 'error: '.$queryid;
7007: }
7008: my $reply = &get_query_reply($queryid);
7009: my $tries = 1;
7010: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7011: $reply = &get_query_reply($queryid);
7012: $tries ++;
7013: }
7014: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7015: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7016: } else {
7017: my @responses = split(/:/,$reply);
7018: my $outcome = shift(@responses);
7019: foreach my $item (@responses) {
7020: my ($key,$value) = split(/=/,$item);
7021: $$photo{$key} = $value;
7022: }
7023: return $outcome;
7024: }
7025: return 'error';
7026: }
7027:
7028: sub auto_instcode_format {
7029: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7030: $cat_order) = @_;
7031: my $courses = '';
7032: my @homeservers;
7033: if ($caller eq 'global') {
7034: my %servers = &get_servers($codedom,'library');
7035: foreach my $tryserver (keys(%servers)) {
7036: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7037: push(@homeservers,$tryserver);
7038: }
7039: }
7040: } elsif ($caller eq 'requests') {
7041: if ($codedom =~ /^$match_domain$/) {
7042: my $chome = &domain($codedom,'primary');
7043: unless ($chome eq 'no_host') {
7044: push(@homeservers,$chome);
7045: }
7046: }
7047: } else {
7048: push(@homeservers,&homeserver($caller,$codedom));
7049: }
7050: foreach my $code (keys(%{$instcodes})) {
7051: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7052: }
7053: chop($courses);
7054: my $ok_response = 0;
7055: my $response;
7056: while (@homeservers > 0 && $ok_response == 0) {
7057: my $server = shift(@homeservers);
7058: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7059: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7060: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7061: split(/:/,$response);
7062: %{$codes} = (%{$codes},&str2hash($codes_str));
7063: push(@{$codetitles},&str2array($codetitles_str));
7064: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7065: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7066: $ok_response = 1;
7067: }
7068: }
7069: if ($ok_response) {
7070: return 'ok';
7071: } else {
7072: return $response;
7073: }
7074: }
7075:
7076: sub auto_instcode_defaults {
7077: my ($domain,$returnhash,$code_order) = @_;
7078: my @homeservers;
7079:
7080: my %servers = &get_servers($domain,'library');
7081: foreach my $tryserver (keys(%servers)) {
7082: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7083: push(@homeservers,$tryserver);
7084: }
7085: }
7086:
7087: my $response;
7088: foreach my $server (@homeservers) {
7089: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7090: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7091:
7092: foreach my $pair (split(/\&/,$response)) {
7093: my ($name,$value)=split(/\=/,$pair);
7094: if ($name eq 'code_order') {
7095: @{$code_order} = split(/\&/,&unescape($value));
7096: } else {
7097: $returnhash->{&unescape($name)}=&unescape($value);
7098: }
7099: }
7100: return 'ok';
7101: }
7102:
7103: return $response;
7104: }
7105:
7106: sub auto_possible_instcodes {
7107: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7108: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7109: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7110: return;
7111: }
7112: my (@homeservers,$uhome);
7113: if (defined(&domain($domain,'primary'))) {
7114: $uhome=&domain($domain,'primary');
7115: push(@homeservers,&domain($domain,'primary'));
7116: } else {
7117: my %servers = &get_servers($domain,'library');
7118: foreach my $tryserver (keys(%servers)) {
7119: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7120: push(@homeservers,$tryserver);
7121: }
7122: }
7123: }
7124: my $response;
7125: foreach my $server (@homeservers) {
7126: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7127: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7128: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7129: split(':',$response);
7130: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7131: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7132: foreach my $item (split('&',$cat_title)) {
7133: my ($name,$value)=split('=',$item);
7134: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7135: }
7136: foreach my $item (split('&',$cat_order)) {
7137: my ($name,$value)=split('=',$item);
7138: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7139: }
7140: return 'ok';
7141: }
7142: return $response;
7143: }
7144:
7145: sub auto_courserequest_checks {
7146: my ($dom) = @_;
7147: my ($homeserver,%validations);
7148: if ($dom =~ /^$match_domain$/) {
7149: $homeserver = &domain($dom,'primary');
7150: }
7151: unless ($homeserver eq 'no_host') {
7152: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7153: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7154: my @items = split(/&/,$response);
7155: foreach my $item (@items) {
7156: my ($key,$value) = split('=',$item);
7157: $validations{&unescape($key)} = &thaw_unescape($value);
7158: }
7159: }
7160: }
7161: return %validations;
7162: }
7163:
7164: sub auto_courserequest_validation {
7165: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7166: my ($homeserver,$response);
7167: if ($dom =~ /^$match_domain$/) {
7168: $homeserver = &domain($dom,'primary');
7169: }
7170: unless ($homeserver eq 'no_host') {
7171:
7172: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7173: ':'.&escape($crstype).':'.&escape($inststatuslist).
7174: ':'.&escape($instcode).':'.&escape($instseclist),
7175: $homeserver));
7176: }
7177: return $response;
7178: }
7179:
7180: sub auto_validate_class_sec {
7181: my ($cdom,$cnum,$owners,$inst_class) = @_;
7182: my $homeserver = &homeserver($cnum,$cdom);
7183: my $ownerlist;
7184: if (ref($owners) eq 'ARRAY') {
7185: $ownerlist = join(',',@{$owners});
7186: } else {
7187: $ownerlist = $owners;
7188: }
7189: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7190: &escape($ownerlist).':'.$cdom,$homeserver);
7191: return $response;
7192: }
7193:
7194: # ------------------------------------------------------- Course Group routines
7195:
7196: sub get_coursegroups {
7197: my ($cdom,$cnum,$group,$namespace) = @_;
7198: return(&dump($namespace,$cdom,$cnum,$group));
7199: }
7200:
7201: sub modify_coursegroup {
7202: my ($cdom,$cnum,$groupsettings) = @_;
7203: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7204: }
7205:
7206: sub toggle_coursegroup_status {
7207: my ($cdom,$cnum,$group,$action) = @_;
7208: my ($from_namespace,$to_namespace);
7209: if ($action eq 'delete') {
7210: $from_namespace = 'coursegroups';
7211: $to_namespace = 'deleted_groups';
7212: } else {
7213: $from_namespace = 'deleted_groups';
7214: $to_namespace = 'coursegroups';
7215: }
7216: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7217: if (my $tmp = &error(%curr_group)) {
7218: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7219: return ('read error',$tmp);
7220: } else {
7221: my %savedsettings = %curr_group;
7222: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7223: my $deloutcome;
7224: if ($result eq 'ok') {
7225: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7226: } else {
7227: return ('write error',$result);
7228: }
7229: if ($deloutcome eq 'ok') {
7230: return 'ok';
7231: } else {
7232: return ('delete error',$deloutcome);
7233: }
7234: }
7235: }
7236:
7237: sub modify_group_roles {
7238: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7239: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7240: my $role = 'gr/'.&escape($userprivs);
7241: my ($uname,$udom) = split(/:/,$user);
7242: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7243: if ($result eq 'ok') {
7244: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7245: }
7246: return $result;
7247: }
7248:
7249: sub modify_coursegroup_membership {
7250: my ($cdom,$cnum,$membership) = @_;
7251: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7252: return $result;
7253: }
7254:
7255: sub get_active_groups {
7256: my ($udom,$uname,$cdom,$cnum) = @_;
7257: my $now = time;
7258: my %groups = ();
7259: foreach my $key (keys(%env)) {
7260: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7261: my ($start,$end) = split(/\./,$env{$key});
7262: if (($end!=0) && ($end<$now)) { next; }
7263: if (($start!=0) && ($start>$now)) { next; }
7264: if ($1 eq $cdom && $2 eq $cnum) {
7265: $groups{$3} = $env{$key} ;
7266: }
7267: }
7268: }
7269: return %groups;
7270: }
7271:
7272: sub get_group_membership {
7273: my ($cdom,$cnum,$group) = @_;
7274: return(&dump('groupmembership',$cdom,$cnum,$group));
7275: }
7276:
7277: sub get_users_groups {
7278: my ($udom,$uname,$courseid) = @_;
7279: my @usersgroups;
7280: my $cachetime=1800;
7281:
7282: my $hashid="$udom:$uname:$courseid";
7283: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7284: if (defined($cached)) {
7285: @usersgroups = split(/:/,$grouplist);
7286: } else {
7287: $grouplist = '';
7288: my $courseurl = &courseid_to_courseurl($courseid);
7289: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7290: my $access_end = $env{'course.'.$courseid.
7291: '.default_enrollment_end_date'};
7292: my $now = time;
7293: foreach my $key (keys(%roleshash)) {
7294: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7295: my $group = $1;
7296: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7297: my $start = $2;
7298: my $end = $1;
7299: if ($start == -1) { next; } # deleted from group
7300: if (($start!=0) && ($start>$now)) { next; }
7301: if (($end!=0) && ($end<$now)) {
7302: if ($access_end && $access_end < $now) {
7303: if ($access_end - $end < 86400) {
7304: push(@usersgroups,$group);
7305: }
7306: }
7307: next;
7308: }
7309: push(@usersgroups,$group);
7310: }
7311: }
7312: }
7313: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7314: $grouplist = join(':',@usersgroups);
7315: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7316: }
7317: return @usersgroups;
7318: }
7319:
7320: sub devalidate_getgroups_cache {
7321: my ($udom,$uname,$cdom,$cnum)=@_;
7322: my $courseid = $cdom.'_'.$cnum;
7323:
7324: my $hashid="$udom:$uname:$courseid";
7325: &devalidate_cache_new('getgroups',$hashid);
7326: }
7327:
7328: # ------------------------------------------------------------------ Plain Text
7329:
7330: sub plaintext {
7331: my ($short,$type,$cid,$forcedefault) = @_;
7332: if ($short =~ m{^cr/}) {
7333: return (split('/',$short))[-1];
7334: }
7335: if (!defined($cid)) {
7336: $cid = $env{'request.course.id'};
7337: }
7338: my %rolenames = (
7339: Course => 'std',
7340: Community => 'alt1',
7341: );
7342: if ($cid ne '') {
7343: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7344: unless ($forcedefault) {
7345: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7346: &Apache::lonlocal::mt_escape(\$roletext);
7347: return &Apache::lonlocal::mt($roletext);
7348: }
7349: }
7350: }
7351: if ((defined($type)) && (defined($rolenames{$type})) &&
7352: (defined($rolenames{$type})) &&
7353: (defined($prp{$short}{$rolenames{$type}}))) {
7354: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7355: } elsif ($cid ne '') {
7356: my $crstype = $env{'course.'.$cid.'.type'};
7357: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7358: (defined($prp{$short}{$rolenames{$crstype}}))) {
7359: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7360: }
7361: }
7362: return &Apache::lonlocal::mt($prp{$short}{'std'});
7363: }
7364:
7365: # ----------------------------------------------------------------- Assign Role
7366:
7367: sub assignrole {
7368: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7369: $context)=@_;
7370: my $mrole;
7371: if ($role =~ /^cr\//) {
7372: my $cwosec=$url;
7373: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7374: unless (&allowed('ccr',$cwosec)) {
7375: my $refused = 1;
7376: if ($context eq 'requestcourses') {
7377: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7378: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7379: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7380: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7381: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7382: if ($crsenv{'internal.courseowner'} eq
7383: $env{'user.name'}.':'.$env{'user.domain'}) {
7384: $refused = '';
7385: }
7386: }
7387: }
7388: }
7389: }
7390: if ($refused) {
7391: &logthis('Refused custom assignrole: '.
7392: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7393: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7394: return 'refused';
7395: }
7396: }
7397: $mrole='cr';
7398: } elsif ($role =~ /^gr\//) {
7399: my $cwogrp=$url;
7400: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7401: unless (&allowed('mdg',$cwogrp)) {
7402: &logthis('Refused group assignrole: '.
7403: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7404: $env{'user.name'}.' at '.$env{'user.domain'});
7405: return 'refused';
7406: }
7407: $mrole='gr';
7408: } else {
7409: my $cwosec=$url;
7410: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7411: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7412: my $refused;
7413: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7414: if (!(&allowed('c'.$role,$url))) {
7415: $refused = 1;
7416: }
7417: } else {
7418: $refused = 1;
7419: }
7420: if ($refused) {
7421: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7422: if (!$selfenroll && $context eq 'course') {
7423: my %crsenv;
7424: if ($role eq 'cc' || $role eq 'co') {
7425: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7426: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7427: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7428: if ($crsenv{'internal.courseowner'} eq
7429: $env{'user.name'}.':'.$env{'user.domain'}) {
7430: $refused = '';
7431: }
7432: }
7433: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7434: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7435: if ($crsenv{'internal.courseowner'} eq
7436: $env{'user.name'}.':'.$env{'user.domain'}) {
7437: $refused = '';
7438: }
7439: }
7440: }
7441: }
7442: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7443: $refused = '';
7444: } elsif ($context eq 'requestcourses') {
7445: my @possroles = ('st','ta','ep','in','cc','co');
7446: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7447: my $wrongcc;
7448: if ($cnum =~ /^$match_community$/) {
7449: $wrongcc = 1 if ($role eq 'cc');
7450: } else {
7451: $wrongcc = 1 if ($role eq 'co');
7452: }
7453: unless ($wrongcc) {
7454: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7455: if ($crsenv{'internal.courseowner'} eq
7456: $env{'user.name'}.':'.$env{'user.domain'}) {
7457: $refused = '';
7458: }
7459: }
7460: }
7461: }
7462: if ($refused) {
7463: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7464: ' '.$role.' '.$end.' '.$start.' by '.
7465: $env{'user.name'}.' at '.$env{'user.domain'});
7466: return 'refused';
7467: }
7468: }
7469: } elsif ($role eq 'au') {
7470: if ($url ne '/'.$udom.'/') {
7471: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7472: ' to assign author role for '.$uname.':'.$udom.
7473: ' in domain: '.$url.' refused (wrong domain).');
7474: return 'refused';
7475: }
7476: }
7477: $mrole=$role;
7478: }
7479: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7480: "$udom:$uname:$url".'_'."$mrole=$role";
7481: if ($end) { $command.='_'.$end; }
7482: if ($start) {
7483: if ($end) {
7484: $command.='_'.$start;
7485: } else {
7486: $command.='_0_'.$start;
7487: }
7488: }
7489: my $origstart = $start;
7490: my $origend = $end;
7491: my $delflag;
7492: # actually delete
7493: if ($deleteflag) {
7494: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7495: # modify command to delete the role
7496: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7497: "$udom:$uname:$url".'_'."$mrole";
7498: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7499: # set start and finish to negative values for userrolelog
7500: $start=-1;
7501: $end=-1;
7502: $delflag = 1;
7503: }
7504: }
7505: # send command
7506: my $answer=&reply($command,&homeserver($uname,$udom));
7507: # log new user role if status is ok
7508: if ($answer eq 'ok') {
7509: &userrolelog($role,$uname,$udom,$url,$start,$end);
7510: # for course roles, perform group memberships changes triggered by role change.
7511: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
7512: unless ($role =~ /^gr/) {
7513: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7514: $origstart,$selfenroll,$context);
7515: }
7516: if ($role eq 'cc') {
7517: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7518: }
7519: }
7520: return $answer;
7521: }
7522:
7523: sub autoupdate_coowners {
7524: my ($url,$end,$start,$uname,$udom) = @_;
7525: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7526: if (($cdom ne '') && ($cnum ne '')) {
7527: my $now = time;
7528: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7529: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7530: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7531: my $instcode = $coursehash{'internal.coursecode'};
7532: if ($instcode ne '') {
7533: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7534: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7535: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7536: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7537: if ($result eq 'valid') {
7538: if ($coursehash{'internal.co-owners'}) {
7539: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7540: push(@newcoowners,$coowner);
7541: }
7542: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7543: push(@newcoowners,$uname.':'.$udom);
7544: }
7545: @newcoowners = sort(@newcoowners);
7546: } else {
7547: push(@newcoowners,$uname.':'.$udom);
7548: }
7549: } else {
7550: if ($coursehash{'internal.co-owners'}) {
7551: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7552: unless ($coowner eq $uname.':'.$udom) {
7553: push(@newcoowners,$coowner);
7554: }
7555: }
7556: unless (@newcoowners > 0) {
7557: $delcoowners = 1;
7558: $coowners = '';
7559: }
7560: }
7561: }
7562: if (@newcoowners || $delcoowners) {
7563: &store_coowners($cdom,$cnum,$coursehash{'home'},
7564: $delcoowners,@newcoowners);
7565: }
7566: }
7567: }
7568: }
7569: }
7570: }
7571: }
7572:
7573: sub store_coowners {
7574: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
7575: my $cid = $cdom.'_'.$cnum;
7576: my ($coowners,$delresult,$putresult);
7577: if (@newcoowners) {
7578: $coowners = join(',',@newcoowners);
7579: my %coownershash = (
7580: 'internal.co-owners' => $coowners,
7581: );
7582: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
7583: if ($putresult eq 'ok') {
7584: if ($env{'course.'.$cid.'.num'} eq $cnum) {
7585: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
7586: }
7587: }
7588: }
7589: if ($delcoowners) {
7590: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
7591: if ($delresult eq 'ok') {
7592: if ($env{'course.'.$cid.'.internal.co-owners'}) {
7593: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
7594: }
7595: }
7596: }
7597: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
7598: my %crsinfo =
7599: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
7600: if (ref($crsinfo{$cid}) eq 'HASH') {
7601: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
7602: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
7603: }
7604: }
7605: }
7606:
7607: # -------------------------------------------------- Modify user authentication
7608: # Overrides without validation
7609:
7610: sub modifyuserauth {
7611: my ($udom,$uname,$umode,$upass)=@_;
7612: my $uhome=&homeserver($uname,$udom);
7613: unless (&allowed('mau',$udom)) { return 'refused'; }
7614: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
7615: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7616: ' in domain '.$env{'request.role.domain'});
7617: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7618: &escape($upass),$uhome);
7619: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7620: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7621: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7622: &log($udom,,$uname,$uhome,
7623: 'Authentication changed by '.$env{'user.domain'}.', '.
7624: $env{'user.name'}.', '.$umode.
7625: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7626: unless ($reply eq 'ok') {
7627: &logthis('Authentication mode error: '.$reply);
7628: return 'error: '.$reply;
7629: }
7630: return 'ok';
7631: }
7632:
7633: # --------------------------------------------------------------- Modify a user
7634:
7635: sub modifyuser {
7636: my ($udom, $uname, $uid,
7637: $umode, $upass, $first,
7638: $middle, $last, $gene,
7639: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7640: $udom= &LONCAPA::clean_domain($udom);
7641: $uname=&LONCAPA::clean_username($uname);
7642: my $showcandelete = 'none';
7643: if (ref($candelete) eq 'ARRAY') {
7644: if (@{$candelete} > 0) {
7645: $showcandelete = join(', ',@{$candelete});
7646: }
7647: }
7648: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7649: $umode.', '.$first.', '.$middle.', '.
7650: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7651: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7652: ' desiredhome not specified').
7653: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7654: ' in domain '.$env{'request.role.domain'});
7655: my $uhome=&homeserver($uname,$udom,'true');
7656: my $newuser;
7657: if ($uhome eq 'no_host') {
7658: $newuser = 1;
7659: }
7660: # ----------------------------------------------------------------- Create User
7661: if (($uhome eq 'no_host') &&
7662: (($umode && $upass) || ($umode eq 'localauth'))) {
7663: my $unhome='';
7664: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7665: $unhome = $desiredhome;
7666: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7667: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7668: } else { # load balancing routine for determining $unhome
7669: my $loadm=10000000;
7670: my %servers = &get_servers($udom,'library');
7671: foreach my $tryserver (keys(%servers)) {
7672: my $answer=reply('load',$tryserver);
7673: if (($answer=~/\d+/) && ($answer<$loadm)) {
7674: $loadm=$answer;
7675: $unhome=$tryserver;
7676: }
7677: }
7678: }
7679: if (($unhome eq '') || ($unhome eq 'no_host')) {
7680: return 'error: unable to find a home server for '.$uname.
7681: ' in domain '.$udom;
7682: }
7683: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7684: &escape($upass),$unhome);
7685: unless ($reply eq 'ok') {
7686: return 'error: '.$reply;
7687: }
7688: $uhome=&homeserver($uname,$udom,'true');
7689: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7690: return 'error: unable verify users home machine.';
7691: }
7692: } # End of creation of new user
7693: # ---------------------------------------------------------------------- Add ID
7694: if ($uid) {
7695: $uid=~tr/A-Z/a-z/;
7696: my %uidhash=&idrget($udom,$uname);
7697: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7698: && (!$forceid)) {
7699: unless ($uid eq $uidhash{$uname}) {
7700: return 'error: user id "'.$uid.'" does not match '.
7701: 'current user id "'.$uidhash{$uname}.'".';
7702: }
7703: } else {
7704: &idput($udom,($uname => $uid));
7705: }
7706: }
7707: # -------------------------------------------------------------- Add names, etc
7708: my @tmp=&get('environment',
7709: ['firstname','middlename','lastname','generation','id',
7710: 'permanentemail','inststatus'],
7711: $udom,$uname);
7712: my (%names,%oldnames);
7713: if ($tmp[0] =~ m/^error:.*/) {
7714: %names=();
7715: } else {
7716: %names = @tmp;
7717: %oldnames = %names;
7718: }
7719: #
7720: # If name, email and/or uid are blank (e.g., because an uploaded file
7721: # of users did not contain them), do not overwrite existing values
7722: # unless field is in $candelete array ref.
7723: #
7724:
7725: my @fields = ('firstname','middlename','lastname','generation',
7726: 'permanentemail','id');
7727: my %newvalues;
7728: if (ref($candelete) eq 'ARRAY') {
7729: foreach my $field (@fields) {
7730: if (grep(/^\Q$field\E$/,@{$candelete})) {
7731: if ($field eq 'firstname') {
7732: $names{$field} = $first;
7733: } elsif ($field eq 'middlename') {
7734: $names{$field} = $middle;
7735: } elsif ($field eq 'lastname') {
7736: $names{$field} = $last;
7737: } elsif ($field eq 'generation') {
7738: $names{$field} = $gene;
7739: } elsif ($field eq 'permanentemail') {
7740: $names{$field} = $email;
7741: } elsif ($field eq 'id') {
7742: $names{$field} = $uid;
7743: }
7744: }
7745: }
7746: }
7747: if ($first) { $names{'firstname'} = $first; }
7748: if (defined($middle)) { $names{'middlename'} = $middle; }
7749: if ($last) { $names{'lastname'} = $last; }
7750: if (defined($gene)) { $names{'generation'} = $gene; }
7751: if ($email) {
7752: $email=~s/[^\w\@\.\-\,]//gs;
7753: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
7754: }
7755: if ($uid) { $names{'id'} = $uid; }
7756: if (defined($inststatus)) {
7757: $names{'inststatus'} = '';
7758: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
7759: if (ref($usertypes) eq 'HASH') {
7760: my @okstatuses;
7761: foreach my $item (split(/:/,$inststatus)) {
7762: if (defined($usertypes->{$item})) {
7763: push(@okstatuses,$item);
7764: }
7765: }
7766: if (@okstatuses) {
7767: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
7768: }
7769: }
7770: }
7771: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7772: $umode.', '.$first.', '.$middle.', '.
7773: $last.', '.$gene.', '.$email.', '.$inststatus;
7774: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7775: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7776: } else {
7777: $logmsg .= ' during self creation';
7778: }
7779: my $changed;
7780: if ($newuser) {
7781: $changed = 1;
7782: } else {
7783: foreach my $field (@fields) {
7784: if ($names{$field} ne $oldnames{$field}) {
7785: $changed = 1;
7786: last;
7787: }
7788: }
7789: }
7790: unless ($changed) {
7791: $logmsg = 'No changes in user information needed for: '.$logmsg;
7792: &logthis($logmsg);
7793: return 'ok';
7794: }
7795: my $reply = &put('environment', \%names, $udom,$uname);
7796: if ($reply ne 'ok') {
7797: return 'error: '.$reply;
7798: }
7799: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7800: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7801: }
7802: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7803: &devalidate_cache_new('namescache',$uname.':'.$udom);
7804: $logmsg = 'Success modifying user '.$logmsg;
7805: &logthis($logmsg);
7806: return 'ok';
7807: }
7808:
7809: # -------------------------------------------------------------- Modify student
7810:
7811: sub modifystudent {
7812: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7813: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7814: $selfenroll,$context,$inststatus)=@_;
7815: if (!$cid) {
7816: unless ($cid=$env{'request.course.id'}) {
7817: return 'not_in_class';
7818: }
7819: }
7820: # --------------------------------------------------------------- Make the user
7821: my $reply=&modifyuser
7822: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7823: $desiredhome,$email,$inststatus);
7824: unless ($reply eq 'ok') { return $reply; }
7825: # This will cause &modify_student_enrollment to get the uid from the
7826: # students environment
7827: $uid = undef if (!$forceid);
7828: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7829: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7830: return $reply;
7831: }
7832:
7833: sub modify_student_enrollment {
7834: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7835: my ($cdom,$cnum,$chome);
7836: if (!$cid) {
7837: unless ($cid=$env{'request.course.id'}) {
7838: return 'not_in_class';
7839: }
7840: $cdom=$env{'course.'.$cid.'.domain'};
7841: $cnum=$env{'course.'.$cid.'.num'};
7842: } else {
7843: ($cdom,$cnum)=split(/_/,$cid);
7844: }
7845: $chome=$env{'course.'.$cid.'.home'};
7846: if (!$chome) {
7847: $chome=&homeserver($cnum,$cdom);
7848: }
7849: if (!$chome) { return 'unknown_course'; }
7850: # Make sure the user exists
7851: my $uhome=&homeserver($uname,$udom);
7852: if (($uhome eq '') || ($uhome eq 'no_host')) {
7853: return 'error: no such user';
7854: }
7855: # Get student data if we were not given enough information
7856: if (!defined($first) || $first eq '' ||
7857: !defined($last) || $last eq '' ||
7858: !defined($uid) || $uid eq '' ||
7859: !defined($middle) || $middle eq '' ||
7860: !defined($gene) || $gene eq '') {
7861: # They did not supply us with enough data to enroll the student, so
7862: # we need to pick up more information.
7863: my %tmp = &get('environment',
7864: ['firstname','middlename','lastname', 'generation','id']
7865: ,$udom,$uname);
7866:
7867: #foreach my $key (keys(%tmp)) {
7868: # &logthis("key $key = ".$tmp{$key});
7869: #}
7870: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7871: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7872: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7873: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7874: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7875: }
7876: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7877: my $user = "$uname:$udom";
7878: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
7879: my $reply=cput('classlist',
7880: {$user =>
7881: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7882: $cdom,$cnum);
7883: if (($reply eq 'ok') || ($reply eq 'delayed')) {
7884: &devalidate_getsection_cache($udom,$uname,$cid);
7885: } else {
7886: return 'error: '.$reply;
7887: }
7888: # Add student role to user
7889: my $uurl='/'.$cid;
7890: $uurl=~s/\_/\//g;
7891: if ($usec) {
7892: $uurl.='/'.$usec;
7893: }
7894: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
7895: $selfenroll,$context);
7896: if ($result ne 'ok') {
7897: if ($old_entry{$user} ne '') {
7898: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
7899: } else {
7900: $reply = &del('classlist',[$user],$cdom,$cnum);
7901: }
7902: }
7903: return $result;
7904: }
7905:
7906: sub format_name {
7907: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7908: my $name;
7909: if ($first ne 'lastname') {
7910: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7911: } else {
7912: if ($lastname=~/\S/) {
7913: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7914: $name=~s/\s+,/,/;
7915: } else {
7916: $name.= $firstname.' '.$middlename.' '.$generation;
7917: }
7918: }
7919: $name=~s/^\s+//;
7920: $name=~s/\s+$//;
7921: $name=~s/\s+/ /g;
7922: return $name;
7923: }
7924:
7925: # ------------------------------------------------- Write to course preferences
7926:
7927: sub writecoursepref {
7928: my ($courseid,%prefs)=@_;
7929: $courseid=~s/^\///;
7930: $courseid=~s/\_/\//g;
7931: my ($cdomain,$cnum)=split(/\//,$courseid);
7932: my $chome=homeserver($cnum,$cdomain);
7933: if (($chome eq '') || ($chome eq 'no_host')) {
7934: return 'error: no such course';
7935: }
7936: my $cstring='';
7937: foreach my $pref (keys(%prefs)) {
7938: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7939: }
7940: $cstring=~s/\&$//;
7941: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7942: }
7943:
7944: # ---------------------------------------------------------- Make/modify course
7945:
7946: sub createcourse {
7947: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7948: $course_owner,$crstype,$cnum,$context,$category)=@_;
7949: $url=&declutter($url);
7950: my $cid='';
7951: if ($context eq 'requestcourses') {
7952: my $can_create = 0;
7953: my ($ownername,$ownerdom) = split(':',$course_owner);
7954: if ($udom eq $ownerdom) {
7955: if (&usertools_access($ownername,$ownerdom,$category,undef,
7956: $context)) {
7957: $can_create = 1;
7958: }
7959: } else {
7960: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7961: $category);
7962: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7963: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7964: if (@curr > 0) {
7965: my @options = qw(approval validate autolimit);
7966: my $optregex = join('|',@options);
7967: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7968: $can_create = 1;
7969: }
7970: }
7971: }
7972: }
7973: if ($can_create) {
7974: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7975: unless (&allowed('ccc',$udom)) {
7976: return 'refused';
7977: }
7978: }
7979: } else {
7980: return 'refused';
7981: }
7982: } elsif (!&allowed('ccc',$udom)) {
7983: return 'refused';
7984: }
7985: # --------------------------------------------------------------- Get Unique ID
7986: my $uname;
7987: if ($cnum =~ /^$match_courseid$/) {
7988: my $chome=&homeserver($cnum,$udom,'true');
7989: if (($chome eq '') || ($chome eq 'no_host')) {
7990: $uname = $cnum;
7991: } else {
7992: $uname = &generate_coursenum($udom,$crstype);
7993: }
7994: } else {
7995: $uname = &generate_coursenum($udom,$crstype);
7996: }
7997: return $uname if ($uname =~ /^error/);
7998: # -------------------------------------------------- Check supplied server name
7999: if (!defined($course_server)) {
8000: if (defined(&domain($udom,'primary'))) {
8001: $course_server = &domain($udom,'primary');
8002: } else {
8003: $course_server = $env{'user.home'};
8004: }
8005: }
8006: my %host_servers =
8007: &Apache::lonnet::get_servers($udom,'library');
8008: unless ($host_servers{$course_server}) {
8009: return 'error: invalid home server for course: '.$course_server;
8010: }
8011: # ------------------------------------------------------------- Make the course
8012: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8013: $course_server);
8014: unless ($reply eq 'ok') { return 'error: '.$reply; }
8015: my $uhome=&homeserver($uname,$udom,'true');
8016: if (($uhome eq '') || ($uhome eq 'no_host')) {
8017: return 'error: no such course';
8018: }
8019: # ----------------------------------------------------------------- Course made
8020: # log existence
8021: my $now = time;
8022: my $newcourse = {
8023: $udom.'_'.$uname => {
8024: description => $description,
8025: inst_code => $inst_code,
8026: owner => $course_owner,
8027: type => $crstype,
8028: creator => $env{'user.name'}.':'.
8029: $env{'user.domain'},
8030: created => $now,
8031: context => $context,
8032: },
8033: };
8034: &courseidput($udom,$newcourse,$uhome,'notime');
8035: # set toplevel url
8036: my $topurl=$url;
8037: unless ($nonstandard) {
8038: # ------------------------------------------ For standard courses, make top url
8039: my $mapurl=&clutter($url);
8040: if ($mapurl eq '/res/') { $mapurl=''; }
8041: $env{'form.initmap'}=(<<ENDINITMAP);
8042: <map>
8043: <resource id="1" type="start"></resource>
8044: <resource id="2" src="$mapurl"></resource>
8045: <resource id="3" type="finish"></resource>
8046: <link index="1" from="1" to="2"></link>
8047: <link index="2" from="2" to="3"></link>
8048: </map>
8049: ENDINITMAP
8050: $topurl=&declutter(
8051: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8052: );
8053: }
8054: # ----------------------------------------------------------- Write preferences
8055: &writecoursepref($udom.'_'.$uname,
8056: ('description' => $description,
8057: 'url' => $topurl,
8058: 'internal.creator' => $env{'user.name'}.':'.
8059: $env{'user.domain'},
8060: 'internal.created' => $now,
8061: 'internal.creationcontext' => $context)
8062: );
8063: return '/'.$udom.'/'.$uname;
8064: }
8065:
8066: # ------------------------------------------------------------------- Create ID
8067: sub generate_coursenum {
8068: my ($udom,$crstype) = @_;
8069: my $domdesc = &domain($udom);
8070: return 'error: invalid domain' if ($domdesc eq '');
8071: my $first;
8072: if ($crstype eq 'Community') {
8073: $first = '0';
8074: } else {
8075: $first = int(1+rand(9));
8076: }
8077: my $uname=$first.
8078: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8079: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8080: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8081: # ----------------------------------------------- Make sure that does not exist
8082: my $uhome=&homeserver($uname,$udom,'true');
8083: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8084: if ($crstype eq 'Community') {
8085: $first = '0';
8086: } else {
8087: $first = int(1+rand(9));
8088: }
8089: $uname=$first.
8090: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8091: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8092: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8093: $uhome=&homeserver($uname,$udom,'true');
8094: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8095: return 'error: unable to generate unique course-ID';
8096: }
8097: }
8098: return $uname;
8099: }
8100:
8101: sub is_course {
8102: my ($cdom,$cnum) = @_;
8103: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
8104: undef,'.');
8105: if (exists($courses{$cdom.'_'.$cnum})) {
8106: return 1;
8107: }
8108: return 0;
8109: }
8110:
8111: sub store_userdata {
8112: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8113: my $result;
8114: if ($datakey ne '') {
8115: if (ref($storehash) eq 'HASH') {
8116: if ($udom eq '' || $uname eq '') {
8117: $udom = $env{'user.domain'};
8118: $uname = $env{'user.name'};
8119: }
8120: my $uhome=&homeserver($uname,$udom);
8121: if (($uhome eq '') || ($uhome eq 'no_host')) {
8122: $result = 'error: no_host';
8123: } else {
8124: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8125: $storehash->{'host'} = $perlvar{'lonHostID'};
8126:
8127: my $namevalue='';
8128: foreach my $key (keys(%{$storehash})) {
8129: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8130: }
8131: $namevalue=~s/\&$//;
8132: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8133: $namevalue,$uhome);
8134: }
8135: } else {
8136: $result = 'error: data to store was not a hash reference';
8137: }
8138: } else {
8139: $result= 'error: invalid requestkey';
8140: }
8141: return $result;
8142: }
8143:
8144: # ---------------------------------------------------------- Assign Custom Role
8145:
8146: sub assigncustomrole {
8147: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8148: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8149: $end,$start,$deleteflag,$selfenroll,$context);
8150: }
8151:
8152: # ----------------------------------------------------------------- Revoke Role
8153:
8154: sub revokerole {
8155: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8156: my $now=time;
8157: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8158: }
8159:
8160: # ---------------------------------------------------------- Revoke Custom Role
8161:
8162: sub revokecustomrole {
8163: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8164: my $now=time;
8165: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8166: $deleteflag,$selfenroll,$context);
8167: }
8168:
8169: # ------------------------------------------------------------ Disk usage
8170: sub diskusage {
8171: my ($udom,$uname,$directorypath,$getpropath)=@_;
8172: $directorypath =~ s/\/$//;
8173: my $listing=&reply('du2:'.&escape($directorypath).':'
8174: .&escape($getpropath).':'.&escape($uname).':'
8175: .&escape($udom),homeserver($uname,$udom));
8176: if ($listing eq 'unknown_cmd') {
8177: if ($getpropath) {
8178: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8179: }
8180: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8181: }
8182: return $listing;
8183: }
8184:
8185: sub is_locked {
8186: my ($file_name, $domain, $user, $which) = @_;
8187: my @check;
8188: my $is_locked;
8189: push (@check,$file_name);
8190: my %locked = &get('file_permissions',\@check,
8191: $env{'user.domain'},$env{'user.name'});
8192: my ($tmp)=keys(%locked);
8193: if ($tmp=~/^error:/) { undef(%locked); }
8194:
8195: if (ref($locked{$file_name}) eq 'ARRAY') {
8196: $is_locked = 'false';
8197: foreach my $entry (@{$locked{$file_name}}) {
8198: if (ref($entry) eq 'ARRAY') {
8199: $is_locked = 'true';
8200: if (ref($which) eq 'ARRAY') {
8201: push(@{$which},$entry);
8202: } else {
8203: last;
8204: }
8205: }
8206: }
8207: } else {
8208: $is_locked = 'false';
8209: }
8210: return $is_locked;
8211: }
8212:
8213: sub declutter_portfile {
8214: my ($file) = @_;
8215: $file =~ s{^(/portfolio/|portfolio/)}{/};
8216: return $file;
8217: }
8218:
8219: # ------------------------------------------------------------- Mark as Read Only
8220:
8221: sub mark_as_readonly {
8222: my ($domain,$user,$files,$what) = @_;
8223: my %current_permissions = &dump('file_permissions',$domain,$user);
8224: my ($tmp)=keys(%current_permissions);
8225: if ($tmp=~/^error:/) { undef(%current_permissions); }
8226: foreach my $file (@{$files}) {
8227: $file = &declutter_portfile($file);
8228: push(@{$current_permissions{$file}},$what);
8229: }
8230: &put('file_permissions',\%current_permissions,$domain,$user);
8231: return;
8232: }
8233:
8234: # ------------------------------------------------------------Save Selected Files
8235:
8236: sub save_selected_files {
8237: my ($user, $path, @files) = @_;
8238: my $filename = $user."savedfiles";
8239: my @other_files = &files_not_in_path($user, $path);
8240: open (OUT, '>'.$tmpdir.$filename);
8241: foreach my $file (@files) {
8242: print (OUT $env{'form.currentpath'}.$file."\n");
8243: }
8244: foreach my $file (@other_files) {
8245: print (OUT $file."\n");
8246: }
8247: close (OUT);
8248: return 'ok';
8249: }
8250:
8251: sub clear_selected_files {
8252: my ($user) = @_;
8253: my $filename = $user."savedfiles";
8254: open (OUT, '>'.LONCAPA::tempdir().$filename);
8255: print (OUT undef);
8256: close (OUT);
8257: return ("ok");
8258: }
8259:
8260: sub files_in_path {
8261: my ($user, $path) = @_;
8262: my $filename = $user."savedfiles";
8263: my %return_files;
8264: open (IN, '<'.LONCAPA::tempdir().$filename);
8265: while (my $line_in = <IN>) {
8266: chomp ($line_in);
8267: my @paths_and_file = split (m!/!, $line_in);
8268: my $file_part = pop (@paths_and_file);
8269: my $path_part = join ('/', @paths_and_file);
8270: $path_part.='/';
8271: my $path_and_file = $path_part.$file_part;
8272: if ($path_part eq $path) {
8273: $return_files{$file_part}= 'selected';
8274: }
8275: }
8276: close (IN);
8277: return (\%return_files);
8278: }
8279:
8280: # called in portfolio select mode, to show files selected NOT in current directory
8281: sub files_not_in_path {
8282: my ($user, $path) = @_;
8283: my $filename = $user."savedfiles";
8284: my @return_files;
8285: my $path_part;
8286: open(IN, '<'.LONCAPA::.$filename);
8287: while (my $line = <IN>) {
8288: #ok, I know it's clunky, but I want it to work
8289: my @paths_and_file = split(m|/|, $line);
8290: my $file_part = pop(@paths_and_file);
8291: chomp($file_part);
8292: my $path_part = join('/', @paths_and_file);
8293: $path_part .= '/';
8294: my $path_and_file = $path_part.$file_part;
8295: if ($path_part ne $path) {
8296: push(@return_files, ($path_and_file));
8297: }
8298: }
8299: close(OUT);
8300: return (@return_files);
8301: }
8302:
8303: #----------------------------------------------Get portfolio file permissions
8304:
8305: sub get_portfile_permissions {
8306: my ($domain,$user) = @_;
8307: my %current_permissions = &dump('file_permissions',$domain,$user);
8308: my ($tmp)=keys(%current_permissions);
8309: if ($tmp=~/^error:/) { undef(%current_permissions); }
8310: return \%current_permissions;
8311: }
8312:
8313: #---------------------------------------------Get portfolio file access controls
8314:
8315: sub get_access_controls {
8316: my ($current_permissions,$group,$file) = @_;
8317: my %access;
8318: my $real_file = $file;
8319: $file =~ s/\.meta$//;
8320: if (defined($file)) {
8321: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8322: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8323: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8324: }
8325: }
8326: } else {
8327: foreach my $key (keys(%{$current_permissions})) {
8328: if ($key =~ /\0accesscontrol$/) {
8329: if (defined($group)) {
8330: if ($key !~ m-^\Q$group\E/-) {
8331: next;
8332: }
8333: }
8334: my ($fullpath) = split(/\0/,$key);
8335: if (ref($$current_permissions{$key}) eq 'HASH') {
8336: foreach my $control (keys(%{$$current_permissions{$key}})) {
8337: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8338: }
8339: }
8340: }
8341: }
8342: }
8343: return %access;
8344: }
8345:
8346: sub modify_access_controls {
8347: my ($file_name,$changes,$domain,$user)=@_;
8348: my ($outcome,$deloutcome);
8349: my %store_permissions;
8350: my %new_values;
8351: my %new_control;
8352: my %translation;
8353: my @deletions = ();
8354: my $now = time;
8355: if (exists($$changes{'activate'})) {
8356: if (ref($$changes{'activate'}) eq 'HASH') {
8357: my @newitems = sort(keys(%{$$changes{'activate'}}));
8358: my $numnew = scalar(@newitems);
8359: for (my $i=0; $i<$numnew; $i++) {
8360: my $newkey = $newitems[$i];
8361: my $newid = &Apache::loncommon::get_cgi_id();
8362: if ($newkey =~ /^\d+:/) {
8363: $newkey =~ s/^(\d+)/$newid/;
8364: $translation{$1} = $newid;
8365: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8366: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8367: $translation{$1} = $newid;
8368: }
8369: $new_values{$file_name."\0".$newkey} =
8370: $$changes{'activate'}{$newitems[$i]};
8371: $new_control{$newkey} = $now;
8372: }
8373: }
8374: }
8375: my %todelete;
8376: my %changed_items;
8377: foreach my $action ('delete','update') {
8378: if (exists($$changes{$action})) {
8379: if (ref($$changes{$action}) eq 'HASH') {
8380: foreach my $key (keys(%{$$changes{$action}})) {
8381: my ($itemnum) = ($key =~ /^([^:]+):/);
8382: if ($action eq 'delete') {
8383: $todelete{$itemnum} = 1;
8384: } else {
8385: $changed_items{$itemnum} = $key;
8386: }
8387: }
8388: }
8389: }
8390: }
8391: # get lock on access controls for file.
8392: my $lockhash = {
8393: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8394: ':'.$env{'user.domain'},
8395: };
8396: my $tries = 0;
8397: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8398:
8399: while (($gotlock ne 'ok') && $tries <3) {
8400: $tries ++;
8401: sleep 1;
8402: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8403: }
8404: if ($gotlock eq 'ok') {
8405: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8406: my ($tmp)=keys(%curr_permissions);
8407: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8408: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8409: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8410: if (ref($curr_controls) eq 'HASH') {
8411: foreach my $control_item (keys(%{$curr_controls})) {
8412: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8413: if (defined($todelete{$itemnum})) {
8414: push(@deletions,$file_name."\0".$control_item);
8415: } else {
8416: if (defined($changed_items{$itemnum})) {
8417: $new_control{$changed_items{$itemnum}} = $now;
8418: push(@deletions,$file_name."\0".$control_item);
8419: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8420: } else {
8421: $new_control{$control_item} = $$curr_controls{$control_item};
8422: }
8423: }
8424: }
8425: }
8426: }
8427: my ($group);
8428: if (&is_course($domain,$user)) {
8429: ($group,my $file) = split(/\//,$file_name,2);
8430: }
8431: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8432: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8433: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8434: # remove lock
8435: my @del_lock = ($file_name."\0".'locked_access_records');
8436: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8437: my $sqlresult =
8438: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8439: $group);
8440: } else {
8441: $outcome = "error: could not obtain lockfile\n";
8442: }
8443: return ($outcome,$deloutcome,\%new_values,\%translation);
8444: }
8445:
8446: sub make_public_indefinitely {
8447: my ($requrl) = @_;
8448: my $now = time;
8449: my $action = 'activate';
8450: my $aclnum = 0;
8451: if (&is_portfolio_url($requrl)) {
8452: my (undef,$udom,$unum,$file_name,$group) =
8453: &parse_portfolio_url($requrl);
8454: my $current_perms = &get_portfile_permissions($udom,$unum);
8455: my %access_controls = &get_access_controls($current_perms,
8456: $group,$file_name);
8457: foreach my $key (keys(%{$access_controls{$file_name}})) {
8458: my ($num,$scope,$end,$start) =
8459: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8460: if ($scope eq 'public') {
8461: if ($start <= $now && $end == 0) {
8462: $action = 'none';
8463: } else {
8464: $action = 'update';
8465: $aclnum = $num;
8466: }
8467: last;
8468: }
8469: }
8470: if ($action eq 'none') {
8471: return 'ok';
8472: } else {
8473: my %changes;
8474: my $newend = 0;
8475: my $newstart = $now;
8476: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8477: $changes{$action}{$newkey} = {
8478: type => 'public',
8479: time => {
8480: start => $newstart,
8481: end => $newend,
8482: },
8483: };
8484: my ($outcome,$deloutcome,$new_values,$translation) =
8485: &modify_access_controls($file_name,\%changes,$udom,$unum);
8486: return $outcome;
8487: }
8488: } else {
8489: return 'invalid';
8490: }
8491: }
8492:
8493: #------------------------------------------------------Get Marked as Read Only
8494:
8495: sub get_marked_as_readonly {
8496: my ($domain,$user,$what,$group) = @_;
8497: my $current_permissions = &get_portfile_permissions($domain,$user);
8498: my @readonly_files;
8499: my $cmp1=$what;
8500: if (ref($what)) { $cmp1=join('',@{$what}) };
8501: while (my ($file_name,$value) = each(%{$current_permissions})) {
8502: if (defined($group)) {
8503: if ($file_name !~ m-^\Q$group\E/-) {
8504: next;
8505: }
8506: }
8507: if (ref($value) eq "ARRAY"){
8508: foreach my $stored_what (@{$value}) {
8509: my $cmp2=$stored_what;
8510: if (ref($stored_what) eq 'ARRAY') {
8511: $cmp2=join('',@{$stored_what});
8512: }
8513: if ($cmp1 eq $cmp2) {
8514: push(@readonly_files, $file_name);
8515: last;
8516: } elsif (!defined($what)) {
8517: push(@readonly_files, $file_name);
8518: last;
8519: }
8520: }
8521: }
8522: }
8523: return @readonly_files;
8524: }
8525: #-----------------------------------------------------------Get Marked as Read Only Hash
8526:
8527: sub get_marked_as_readonly_hash {
8528: my ($current_permissions,$group,$what) = @_;
8529: my %readonly_files;
8530: while (my ($file_name,$value) = each(%{$current_permissions})) {
8531: if (defined($group)) {
8532: if ($file_name !~ m-^\Q$group\E/-) {
8533: next;
8534: }
8535: }
8536: if (ref($value) eq "ARRAY"){
8537: foreach my $stored_what (@{$value}) {
8538: if (ref($stored_what) eq 'ARRAY') {
8539: foreach my $lock_descriptor(@{$stored_what}) {
8540: if ($lock_descriptor eq 'graded') {
8541: $readonly_files{$file_name} = 'graded';
8542: } elsif ($lock_descriptor eq 'handback') {
8543: $readonly_files{$file_name} = 'handback';
8544: } else {
8545: if (!exists($readonly_files{$file_name})) {
8546: $readonly_files{$file_name} = 'locked';
8547: }
8548: }
8549: }
8550: }
8551: }
8552: }
8553: }
8554: return %readonly_files;
8555: }
8556: # ------------------------------------------------------------ Unmark as Read Only
8557:
8558: sub unmark_as_readonly {
8559: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8560: # for portfolio submissions, $what contains [$symb,$crsid]
8561: my ($domain,$user,$what,$file_name,$group) = @_;
8562: $file_name = &declutter_portfile($file_name);
8563: my $symb_crs = $what;
8564: if (ref($what)) { $symb_crs=join('',@$what); }
8565: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
8566: my ($tmp)=keys(%current_permissions);
8567: if ($tmp=~/^error:/) { undef(%current_permissions); }
8568: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
8569: foreach my $file (@readonly_files) {
8570: my $clean_file = &declutter_portfile($file);
8571: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
8572: my $current_locks = $current_permissions{$file};
8573: my @new_locks;
8574: my @del_keys;
8575: if (ref($current_locks) eq "ARRAY"){
8576: foreach my $locker (@{$current_locks}) {
8577: my $compare=$locker;
8578: if (ref($locker) eq 'ARRAY') {
8579: $compare=join('',@{$locker});
8580: if ($compare ne $symb_crs) {
8581: push(@new_locks, $locker);
8582: }
8583: }
8584: }
8585: if (scalar(@new_locks) > 0) {
8586: $current_permissions{$file} = \@new_locks;
8587: } else {
8588: push(@del_keys, $file);
8589: &del('file_permissions',\@del_keys, $domain, $user);
8590: delete($current_permissions{$file});
8591: }
8592: }
8593: }
8594: &put('file_permissions',\%current_permissions,$domain,$user);
8595: return;
8596: }
8597:
8598: # ------------------------------------------------------------ Directory lister
8599:
8600: sub dirlist {
8601: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
8602: $uri=~s/^\///;
8603: $uri=~s/\/$//;
8604: my ($udom, $uname);
8605: if ($getuserdir) {
8606: $udom = $userdomain;
8607: $uname = $username;
8608: } else {
8609: (undef,$udom,$uname)=split(/\//,$uri);
8610: if(defined($userdomain)) {
8611: $udom = $userdomain;
8612: }
8613: if(defined($username)) {
8614: $uname = $username;
8615: }
8616: }
8617: my ($dirRoot,$listing,@listing_results);
8618:
8619: $dirRoot = $perlvar{'lonDocRoot'};
8620: if (defined($getpropath)) {
8621: $dirRoot = &propath($udom,$uname);
8622: $dirRoot =~ s/\/$//;
8623: } elsif (defined($getuserdir)) {
8624: my $subdir=$uname.'__';
8625: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
8626: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8627: ."/$udom/$subdir/$uname";
8628: } elsif (defined($alternateRoot)) {
8629: $dirRoot = $alternateRoot;
8630: }
8631:
8632: if($udom) {
8633: if($uname) {
8634: my $uhome = &homeserver($uname,$udom);
8635: if ($uhome eq 'no_host') {
8636: return ([],'no_host');
8637: }
8638: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8639: .$getuserdir.':'.&escape($dirRoot)
8640: .':'.&escape($uname).':'.&escape($udom),$uhome);
8641: if ($listing eq 'unknown_cmd') {
8642: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
8643: } else {
8644: @listing_results = map { &unescape($_); } split(/:/,$listing);
8645: }
8646: if ($listing eq 'unknown_cmd') {
8647: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
8648: @listing_results = split(/:/,$listing);
8649: } else {
8650: @listing_results = map { &unescape($_); } split(/:/,$listing);
8651: }
8652: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8653: ($listing eq 'rejected') || ($listing eq 'refused') ||
8654: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8655: return ([],$listing);
8656: } else {
8657: return (\@listing_results);
8658: }
8659: } elsif(!$alternateRoot) {
8660: my (%allusers,%listerror);
8661: my %servers = &get_servers($udom,'library');
8662: foreach my $tryserver (keys(%servers)) {
8663: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8664: &escape($udom),$tryserver);
8665: if ($listing eq 'unknown_cmd') {
8666: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8667: $udom, $tryserver);
8668: } else {
8669: @listing_results = map { &unescape($_); } split(/:/,$listing);
8670: }
8671: if ($listing eq 'unknown_cmd') {
8672: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8673: $udom, $tryserver);
8674: @listing_results = split(/:/,$listing);
8675: } else {
8676: @listing_results =
8677: map { &unescape($_); } split(/:/,$listing);
8678: }
8679: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8680: ($listing eq 'rejected') || ($listing eq 'refused') ||
8681: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8682: $listerror{$tryserver} = $listing;
8683: } else {
8684: foreach my $line (@listing_results) {
8685: my ($entry) = split(/&/,$line,2);
8686: $allusers{$entry} = 1;
8687: }
8688: }
8689: }
8690: my @alluserslist=();
8691: foreach my $user (sort(keys(%allusers))) {
8692: push(@alluserslist,$user.'&user');
8693: }
8694: return (\@alluserslist);
8695: } else {
8696: return ([],'missing username');
8697: }
8698: } elsif(!defined($getpropath)) {
8699: my $path = $perlvar{'lonDocRoot'}.'/res/';
8700: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
8701: return (\@all_domains);
8702: } else {
8703: return ([],'missing domain');
8704: }
8705: }
8706:
8707: # --------------------------------------------- GetFileTimestamp
8708: # This function utilizes dirlist and returns the date stamp for
8709: # when it was last modified. It will also return an error of -1
8710: # if an error occurs
8711:
8712: sub GetFileTimestamp {
8713: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
8714: $studentDomain = &LONCAPA::clean_domain($studentDomain);
8715: $studentName = &LONCAPA::clean_username($studentName);
8716: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
8717: undef,$getuserdir);
8718: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8719: return -1;
8720: }
8721: if (ref($fileref) eq 'ARRAY') {
8722: my @stats = split('&',$fileref->[0]);
8723: # @stats contains first the filename, then the stat output
8724: return $stats[10]; # so this is 10 instead of 9.
8725: } else {
8726: return -1;
8727: }
8728: }
8729:
8730: sub stat_file {
8731: my ($uri) = @_;
8732: $uri = &clutter_with_no_wrapper($uri);
8733:
8734: my ($udom,$uname,$file);
8735: if ($uri =~ m-^/(uploaded|editupload)/-) {
8736: ($udom,$uname,$file) =
8737: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
8738: $file = 'userfiles/'.$file;
8739: }
8740: if ($uri =~ m-^/res/-) {
8741: ($udom,$uname) =
8742: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
8743: $file = $uri;
8744: }
8745:
8746: if (!$udom || !$uname || !$file) {
8747: # unable to handle the uri
8748: return ();
8749: }
8750: my $getpropath;
8751: if ($file =~ /^userfiles\//) {
8752: $getpropath = 1;
8753: }
8754: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
8755: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8756: return ();
8757: } else {
8758: if (ref($listref) eq 'ARRAY') {
8759: my @stats = split('&',$listref->[0]);
8760: shift(@stats); #filename is first
8761: return @stats;
8762: }
8763: }
8764: return ();
8765: }
8766:
8767: # -------------------------------------------------------- Value of a Condition
8768:
8769: # gets the value of a specific preevaluated condition
8770: # stored in the string $env{user.state.<cid>}
8771: # or looks up a condition reference in the bighash and if if hasn't
8772: # already been evaluated recurses into docondval to get the value of
8773: # the condition, then memoizing it to
8774: # $env{user.state.<cid>.<condition>}
8775: sub directcondval {
8776: my $number=shift;
8777: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
8778: &Apache::lonuserstate::evalstate();
8779: }
8780: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
8781: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
8782: } elsif ($number =~ /^_/) {
8783: my $sub_condition;
8784: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8785: &GDBM_READER(),0640)) {
8786: $sub_condition=$bighash{'conditions'.$number};
8787: untie(%bighash);
8788: }
8789: my $value = &docondval($sub_condition);
8790: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
8791: return $value;
8792: }
8793: if ($env{'user.state.'.$env{'request.course.id'}}) {
8794: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8795: } else {
8796: return 2;
8797: }
8798: }
8799:
8800: # get the collection of conditions for this resource
8801: sub condval {
8802: my $condidx=shift;
8803: my $allpathcond='';
8804: foreach my $cond (split(/\|/,$condidx)) {
8805: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8806: $allpathcond.=
8807: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8808: }
8809: }
8810: $allpathcond=~s/\|$//;
8811: return &docondval($allpathcond);
8812: }
8813:
8814: #evaluates an expression of conditions
8815: sub docondval {
8816: my ($allpathcond) = @_;
8817: my $result=0;
8818: if ($env{'request.course.id'}
8819: && defined($allpathcond)) {
8820: my $operand='|';
8821: my @stack;
8822: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8823: if ($chunk eq '(') {
8824: push @stack,($operand,$result);
8825: } elsif ($chunk eq ')') {
8826: my $before=pop @stack;
8827: if (pop @stack eq '&') {
8828: $result=$result>$before?$before:$result;
8829: } else {
8830: $result=$result>$before?$result:$before;
8831: }
8832: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8833: $operand=$chunk;
8834: } else {
8835: my $new=directcondval($chunk);
8836: if ($operand eq '&') {
8837: $result=$result>$new?$new:$result;
8838: } else {
8839: $result=$result>$new?$result:$new;
8840: }
8841: }
8842: }
8843: }
8844: return $result;
8845: }
8846:
8847: # ---------------------------------------------------- Devalidate courseresdata
8848:
8849: sub devalidatecourseresdata {
8850: my ($coursenum,$coursedomain)=@_;
8851: my $hashid=$coursenum.':'.$coursedomain;
8852: &devalidate_cache_new('courseres',$hashid);
8853: }
8854:
8855:
8856: # --------------------------------------------------- Course Resourcedata Query
8857: #
8858: # Parameters:
8859: # $coursenum - Number of the course.
8860: # $coursedomain - Domain at which the course was created.
8861: # Returns:
8862: # A hash of the course parameters along (I think) with timestamps
8863: # and version info.
8864:
8865: sub get_courseresdata {
8866: my ($coursenum,$coursedomain)=@_;
8867: my $coursehom=&homeserver($coursenum,$coursedomain);
8868: my $hashid=$coursenum.':'.$coursedomain;
8869: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8870: my %dumpreply;
8871: unless (defined($cached)) {
8872: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8873: $result=\%dumpreply;
8874: my ($tmp) = keys(%dumpreply);
8875: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8876: &do_cache_new('courseres',$hashid,$result,600);
8877: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8878: return $tmp;
8879: } elsif ($tmp =~ /^(error)/) {
8880: $result=undef;
8881: &do_cache_new('courseres',$hashid,$result,600);
8882: }
8883: }
8884: return $result;
8885: }
8886:
8887: sub devalidateuserresdata {
8888: my ($uname,$udom)=@_;
8889: my $hashid="$udom:$uname";
8890: &devalidate_cache_new('userres',$hashid);
8891: }
8892:
8893: sub get_userresdata {
8894: my ($uname,$udom)=@_;
8895: #most student don\'t have any data set, check if there is some data
8896: if (&EXT_cache_status($udom,$uname)) { return undef; }
8897:
8898: my $hashid="$udom:$uname";
8899: my ($result,$cached)=&is_cached_new('userres',$hashid);
8900: if (!defined($cached)) {
8901: my %resourcedata=&dump('resourcedata',$udom,$uname);
8902: $result=\%resourcedata;
8903: &do_cache_new('userres',$hashid,$result,600);
8904: }
8905: my ($tmp)=keys(%$result);
8906: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8907: return $result;
8908: }
8909: #error 2 occurs when the .db doesn't exist
8910: if ($tmp!~/error: 2 /) {
8911: &logthis("<font color=\"blue\">WARNING:".
8912: " Trying to get resource data for ".
8913: $uname." at ".$udom.": ".
8914: $tmp."</font>");
8915: } elsif ($tmp=~/error: 2 /) {
8916: #&EXT_cache_set($udom,$uname);
8917: &do_cache_new('userres',$hashid,undef,600);
8918: undef($tmp); # not really an error so don't send it back
8919: }
8920: return $tmp;
8921: }
8922: #----------------------------------------------- resdata - return resource data
8923: # Purpose:
8924: # Return resource data for either users or for a course.
8925: # Parameters:
8926: # $name - Course/user name.
8927: # $domain - Name of the domain the user/course is registered on.
8928: # $type - Type of thing $name is (must be 'course' or 'user'
8929: # @which - Array of names of resources desired.
8930: # Returns:
8931: # The value of the first reasource in @which that is found in the
8932: # resource hash.
8933: # Exceptional Conditions:
8934: # If the $type passed in is not valid (not the string 'course' or
8935: # 'user', an undefined reference is returned.
8936: # If none of the resources are found, an undef is returned
8937: sub resdata {
8938: my ($name,$domain,$type,@which)=@_;
8939: my $result;
8940: if ($type eq 'course') {
8941: $result=&get_courseresdata($name,$domain);
8942: } elsif ($type eq 'user') {
8943: $result=&get_userresdata($name,$domain);
8944: }
8945: if (!ref($result)) { return $result; }
8946: foreach my $item (@which) {
8947: if (defined($result->{$item->[0]})) {
8948: return [$result->{$item->[0]},$item->[1]];
8949: }
8950: }
8951: return undef;
8952: }
8953:
8954: #
8955: # EXT resource caching routines
8956: #
8957:
8958: sub clear_EXT_cache_status {
8959: &delenv('cache.EXT.');
8960: }
8961:
8962: sub EXT_cache_status {
8963: my ($target_domain,$target_user) = @_;
8964: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8965: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8966: # We know already the user has no data
8967: return 1;
8968: } else {
8969: return 0;
8970: }
8971: }
8972:
8973: sub EXT_cache_set {
8974: my ($target_domain,$target_user) = @_;
8975: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8976: #&appenv({$cachename => time});
8977: }
8978:
8979: # --------------------------------------------------------- Value of a Variable
8980: sub EXT {
8981:
8982: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8983: unless ($varname) { return ''; }
8984: #get real user name/domain, courseid and symb
8985: my $courseid;
8986: my $publicuser;
8987: if ($symbparm) {
8988: $symbparm=&get_symb_from_alias($symbparm);
8989: }
8990: if (!($uname && $udom)) {
8991: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8992: if (!$symbparm) { $symbparm=$cursymb; }
8993: } else {
8994: $courseid=$env{'request.course.id'};
8995: }
8996: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8997: my $rest;
8998: if (defined($therest[0])) {
8999: $rest=join('.',@therest);
9000: } else {
9001: $rest='';
9002: }
9003:
9004: my $qualifierrest=$qualifier;
9005: if ($rest) { $qualifierrest.='.'.$rest; }
9006: my $spacequalifierrest=$space;
9007: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9008: if ($realm eq 'user') {
9009: # --------------------------------------------------------------- user.resource
9010: if ($space eq 'resource') {
9011: if ( (defined($Apache::lonhomework::parsing_a_problem)
9012: || defined($Apache::lonhomework::parsing_a_task))
9013: &&
9014: ($symbparm eq &symbread()) ) {
9015: # if we are in the middle of processing the resource the
9016: # get the value we are planning on committing
9017: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9018: return $Apache::lonhomework::results{$qualifierrest};
9019: } else {
9020: return $Apache::lonhomework::history{$qualifierrest};
9021: }
9022: } else {
9023: my %restored;
9024: if ($publicuser || $env{'request.state'} eq 'construct') {
9025: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9026: } else {
9027: %restored=&restore($symbparm,$courseid,$udom,$uname);
9028: }
9029: return $restored{$qualifierrest};
9030: }
9031: # ----------------------------------------------------------------- user.access
9032: } elsif ($space eq 'access') {
9033: # FIXME - not supporting calls for a specific user
9034: return &allowed($qualifier,$rest);
9035: # ------------------------------------------ user.preferences, user.environment
9036: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9037: if (($uname eq $env{'user.name'}) &&
9038: ($udom eq $env{'user.domain'})) {
9039: return $env{join('.',('environment',$qualifierrest))};
9040: } else {
9041: my %returnhash;
9042: if (!$publicuser) {
9043: %returnhash=&userenvironment($udom,$uname,
9044: $qualifierrest);
9045: }
9046: return $returnhash{$qualifierrest};
9047: }
9048: # ----------------------------------------------------------------- user.course
9049: } elsif ($space eq 'course') {
9050: # FIXME - not supporting calls for a specific user
9051: return $env{join('.',('request.course',$qualifier))};
9052: # ------------------------------------------------------------------- user.role
9053: } elsif ($space eq 'role') {
9054: # FIXME - not supporting calls for a specific user
9055: my ($role,$where)=split(/\./,$env{'request.role'});
9056: if ($qualifier eq 'value') {
9057: return $role;
9058: } elsif ($qualifier eq 'extent') {
9059: return $where;
9060: }
9061: # ----------------------------------------------------------------- user.domain
9062: } elsif ($space eq 'domain') {
9063: return $udom;
9064: # ------------------------------------------------------------------- user.name
9065: } elsif ($space eq 'name') {
9066: return $uname;
9067: # ---------------------------------------------------- Any other user namespace
9068: } else {
9069: my %reply;
9070: if (!$publicuser) {
9071: %reply=&get($space,[$qualifierrest],$udom,$uname);
9072: }
9073: return $reply{$qualifierrest};
9074: }
9075: } elsif ($realm eq 'query') {
9076: # ---------------------------------------------- pull stuff out of query string
9077: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9078: [$spacequalifierrest]);
9079: return $env{'form.'.$spacequalifierrest};
9080: } elsif ($realm eq 'request') {
9081: # ------------------------------------------------------------- request.browser
9082: if ($space eq 'browser') {
9083: return $env{'browser.'.$qualifier};
9084: # ------------------------------------------------------------ request.filename
9085: } else {
9086: return $env{'request.'.$spacequalifierrest};
9087: }
9088: } elsif ($realm eq 'course') {
9089: # ---------------------------------------------------------- course.description
9090: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9091: } elsif ($realm eq 'resource') {
9092:
9093: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9094: if (!$symbparm) { $symbparm=&symbread(); }
9095: }
9096:
9097: if ($space eq 'title') {
9098: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9099: return &gettitle($symbparm);
9100: }
9101:
9102: if ($space eq 'map') {
9103: my ($map) = &decode_symb($symbparm);
9104: return &symbread($map);
9105: }
9106: if ($space eq 'filename') {
9107: if ($symbparm) {
9108: return &clutter((&decode_symb($symbparm))[2]);
9109: }
9110: return &hreflocation('',$env{'request.filename'});
9111: }
9112:
9113: my ($section, $group, @groups);
9114: my ($courselevelm,$courselevel);
9115: if ($symbparm && defined($courseid) &&
9116: $courseid eq $env{'request.course.id'}) {
9117:
9118: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9119:
9120: # ----------------------------------------------------- Cascading lookup scheme
9121: my $symbp=$symbparm;
9122: my $mapp=&deversion((&decode_symb($symbp))[0]);
9123:
9124: my $symbparm=$symbp.'.'.$spacequalifierrest;
9125: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9126:
9127: if (($env{'user.name'} eq $uname) &&
9128: ($env{'user.domain'} eq $udom)) {
9129: $section=$env{'request.course.sec'};
9130: @groups = split(/:/,$env{'request.course.groups'});
9131: @groups=&sort_course_groups($courseid,@groups);
9132: } else {
9133: if (! defined($usection)) {
9134: $section=&getsection($udom,$uname,$courseid);
9135: } else {
9136: $section = $usection;
9137: }
9138: @groups = &get_users_groups($udom,$uname,$courseid);
9139: }
9140:
9141: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9142: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9143: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9144:
9145: $courselevel=$courseid.'.'.$spacequalifierrest;
9146: my $courselevelr=$courseid.'.'.$symbparm;
9147: $courselevelm=$courseid.'.'.$mapparm;
9148:
9149: # ----------------------------------------------------------- first, check user
9150:
9151: my $userreply=&resdata($uname,$udom,'user',
9152: ([$courselevelr,'resource'],
9153: [$courselevelm,'map' ],
9154: [$courselevel, 'course' ]));
9155: if (defined($userreply)) { return &get_reply($userreply); }
9156:
9157: # ------------------------------------------------ second, check some of course
9158: my $coursereply;
9159: if (@groups > 0) {
9160: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9161: $mapparm,$spacequalifierrest);
9162: if (defined($coursereply)) { return &get_reply($coursereply); }
9163: }
9164:
9165: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9166: $env{'course.'.$courseid.'.domain'},
9167: 'course',
9168: ([$seclevelr, 'resource'],
9169: [$seclevelm, 'map' ],
9170: [$seclevel, 'course' ],
9171: [$courselevelr,'resource']));
9172: if (defined($coursereply)) { return &get_reply($coursereply); }
9173:
9174: # ------------------------------------------------------ third, check map parms
9175: my %parmhash=();
9176: my $thisparm='';
9177: if (tie(%parmhash,'GDBM_File',
9178: $env{'request.course.fn'}.'_parms.db',
9179: &GDBM_READER(),0640)) {
9180: $thisparm=$parmhash{$symbparm};
9181: untie(%parmhash);
9182: }
9183: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9184: }
9185: # ------------------------------------------ fourth, look in resource metadata
9186:
9187: $spacequalifierrest=~s/\./\_/;
9188: my $filename;
9189: if (!$symbparm) { $symbparm=&symbread(); }
9190: if ($symbparm) {
9191: $filename=(&decode_symb($symbparm))[2];
9192: } else {
9193: $filename=$env{'request.filename'};
9194: }
9195: my $metadata=&metadata($filename,$spacequalifierrest);
9196: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9197: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9198: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9199:
9200: # ---------------------------------------------- fourth, look in rest of course
9201: if ($symbparm && defined($courseid) &&
9202: $courseid eq $env{'request.course.id'}) {
9203: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9204: $env{'course.'.$courseid.'.domain'},
9205: 'course',
9206: ([$courselevelm,'map' ],
9207: [$courselevel, 'course']));
9208: if (defined($coursereply)) { return &get_reply($coursereply); }
9209: }
9210: # ------------------------------------------------------------------ Cascade up
9211: unless ($space eq '0') {
9212: my @parts=split(/_/,$space);
9213: my $id=pop(@parts);
9214: my $part=join('_',@parts);
9215: if ($part eq '') { $part='0'; }
9216: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9217: $symbparm,$udom,$uname,$section,1);
9218: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9219: }
9220: if ($recurse) { return undef; }
9221: my $pack_def=&packages_tab_default($filename,$varname);
9222: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9223: # ---------------------------------------------------- Any other user namespace
9224: } elsif ($realm eq 'environment') {
9225: # ----------------------------------------------------------------- environment
9226: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9227: return $env{'environment.'.$spacequalifierrest};
9228: } else {
9229: if ($uname eq 'anonymous' && $udom eq '') {
9230: return '';
9231: }
9232: my %returnhash=&userenvironment($udom,$uname,
9233: $spacequalifierrest);
9234: return $returnhash{$spacequalifierrest};
9235: }
9236: } elsif ($realm eq 'system') {
9237: # ----------------------------------------------------------------- system.time
9238: if ($space eq 'time') {
9239: return time;
9240: }
9241: } elsif ($realm eq 'server') {
9242: # ----------------------------------------------------------------- system.time
9243: if ($space eq 'name') {
9244: return $ENV{'SERVER_NAME'};
9245: }
9246: }
9247: return '';
9248: }
9249:
9250: sub get_reply {
9251: my ($reply_value) = @_;
9252: if (ref($reply_value) eq 'ARRAY') {
9253: if (wantarray) {
9254: return @$reply_value;
9255: }
9256: return $reply_value->[0];
9257: } else {
9258: return $reply_value;
9259: }
9260: }
9261:
9262: sub check_group_parms {
9263: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9264: my @groupitems = ();
9265: my $resultitem;
9266: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9267: foreach my $group (@{$groups}) {
9268: foreach my $level (@levels) {
9269: my $item = $courseid.'.['.$group.'].'.$level->[0];
9270: push(@groupitems,[$item,$level->[1]]);
9271: }
9272: }
9273: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9274: $env{'course.'.$courseid.'.domain'},
9275: 'course',@groupitems);
9276: return $coursereply;
9277: }
9278:
9279: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9280: my ($courseid,@groups) = @_;
9281: @groups = sort(@groups);
9282: return @groups;
9283: }
9284:
9285: sub packages_tab_default {
9286: my ($uri,$varname)=@_;
9287: my (undef,$part,$name)=split(/\./,$varname);
9288:
9289: my (@extension,@specifics,$do_default);
9290: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9291: my ($pack_type,$pack_part)=split(/_/,$package,2);
9292: if ($pack_type eq 'default') {
9293: $do_default=1;
9294: } elsif ($pack_type eq 'extension') {
9295: push(@extension,[$package,$pack_type,$pack_part]);
9296: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9297: # only look at packages defaults for packages that this id is
9298: push(@specifics,[$package,$pack_type,$pack_part]);
9299: }
9300: }
9301: # first look for a package that matches the requested part id
9302: foreach my $package (@specifics) {
9303: my (undef,$pack_type,$pack_part)=@{$package};
9304: next if ($pack_part ne $part);
9305: if (defined($packagetab{"$pack_type&$name&default"})) {
9306: return $packagetab{"$pack_type&$name&default"};
9307: }
9308: }
9309: # look for any possible matching non extension_ package
9310: foreach my $package (@specifics) {
9311: my (undef,$pack_type,$pack_part)=@{$package};
9312: if (defined($packagetab{"$pack_type&$name&default"})) {
9313: return $packagetab{"$pack_type&$name&default"};
9314: }
9315: if ($pack_type eq 'part') { $pack_part='0'; }
9316: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9317: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9318: }
9319: }
9320: # look for any posible extension_ match
9321: foreach my $package (@extension) {
9322: my ($package,$pack_type)=@{$package};
9323: if (defined($packagetab{"$pack_type&$name&default"})) {
9324: return $packagetab{"$pack_type&$name&default"};
9325: }
9326: if (defined($packagetab{$package."&$name&default"})) {
9327: return $packagetab{$package."&$name&default"};
9328: }
9329: }
9330: # look for a global default setting
9331: if ($do_default && defined($packagetab{"default&$name&default"})) {
9332: return $packagetab{"default&$name&default"};
9333: }
9334: return undef;
9335: }
9336:
9337: sub add_prefix_and_part {
9338: my ($prefix,$part)=@_;
9339: my $keyroot;
9340: if (defined($prefix) && $prefix !~ /^__/) {
9341: # prefix that has a part already
9342: $keyroot=$prefix;
9343: } elsif (defined($prefix)) {
9344: # prefix that is missing a part
9345: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9346: } else {
9347: # no prefix at all
9348: if (defined($part)) { $keyroot='_'.$part; }
9349: }
9350: return $keyroot;
9351: }
9352:
9353: # ---------------------------------------------------------------- Get metadata
9354:
9355: my %metaentry;
9356: my %importedpartids;
9357: sub metadata {
9358: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9359: $uri=&declutter($uri);
9360: # if it is a non metadata possible uri return quickly
9361: if (($uri eq '') ||
9362: (($uri =~ m|^/*adm/|) &&
9363: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9364: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9365: return undef;
9366: }
9367: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9368: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9369: return undef;
9370: }
9371: my $filename=$uri;
9372: $uri=~s/\.meta$//;
9373: #
9374: # Is the metadata already cached?
9375: # Look at timestamp of caching
9376: # Everything is cached by the main uri, libraries are never directly cached
9377: #
9378: if (!defined($liburi)) {
9379: my ($result,$cached)=&is_cached_new('meta',$uri);
9380: if (defined($cached)) { return $result->{':'.$what}; }
9381: }
9382: {
9383: # Imported parts would go here
9384: my %importedids=();
9385: my @origfileimportpartids=();
9386: my $importedparts=0;
9387: #
9388: # Is this a recursive call for a library?
9389: #
9390: # if (! exists($metacache{$uri})) {
9391: # $metacache{$uri}={};
9392: # }
9393: my $cachetime = 60*60;
9394: if ($liburi) {
9395: $liburi=&declutter($liburi);
9396: $filename=$liburi;
9397: } else {
9398: &devalidate_cache_new('meta',$uri);
9399: undef(%metaentry);
9400: }
9401: my %metathesekeys=();
9402: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9403: my $metastring;
9404: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9405: my $which = &hreflocation('','/'.($liburi || $uri));
9406: $metastring =
9407: &Apache::lonnet::ssi_body($which,
9408: ('grade_target' => 'meta'));
9409: $cachetime = 1; # only want this cached in the child not long term
9410: } elsif (($uri !~ m -^(editupload)/-) &&
9411: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9412: my $file=&filelocation('',&clutter($filename));
9413: #push(@{$metaentry{$uri.'.file'}},$file);
9414: $metastring=&getfile($file);
9415: }
9416: my $parser=HTML::LCParser->new(\$metastring);
9417: my $token;
9418: undef %metathesekeys;
9419: while ($token=$parser->get_token) {
9420: if ($token->[0] eq 'S') {
9421: if (defined($token->[2]->{'package'})) {
9422: #
9423: # This is a package - get package info
9424: #
9425: my $package=$token->[2]->{'package'};
9426: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9427: if (defined($token->[2]->{'id'})) {
9428: $keyroot.='_'.$token->[2]->{'id'};
9429: }
9430: if ($metaentry{':packages'}) {
9431: $metaentry{':packages'}.=','.$package.$keyroot;
9432: } else {
9433: $metaentry{':packages'}=$package.$keyroot;
9434: }
9435: foreach my $pack_entry (keys(%packagetab)) {
9436: my $part=$keyroot;
9437: $part=~s/^\_//;
9438: if ($pack_entry=~/^\Q$package\E\&/ ||
9439: $pack_entry=~/^\Q$package\E_0\&/) {
9440: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9441: # ignore package.tab specified default values
9442: # here &package_tab_default() will fetch those
9443: if ($subp eq 'default') { next; }
9444: my $value=$packagetab{$pack_entry};
9445: my $unikey;
9446: if ($pack =~ /_0$/) {
9447: $unikey='parameter_0_'.$name;
9448: $part=0;
9449: } else {
9450: $unikey='parameter'.$keyroot.'_'.$name;
9451: }
9452: if ($subp eq 'display') {
9453: $value.=' [Part: '.$part.']';
9454: }
9455: $metaentry{':'.$unikey.'.part'}=$part;
9456: $metathesekeys{$unikey}=1;
9457: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9458: $metaentry{':'.$unikey.'.'.$subp}=$value;
9459: }
9460: if (defined($metaentry{':'.$unikey.'.default'})) {
9461: $metaentry{':'.$unikey}=
9462: $metaentry{':'.$unikey.'.default'};
9463: }
9464: }
9465: }
9466: } else {
9467: #
9468: # This is not a package - some other kind of start tag
9469: #
9470: my $entry=$token->[1];
9471: my $unikey='';
9472:
9473: if ($entry eq 'import') {
9474: #
9475: # Importing a library here
9476: #
9477: my $location=$parser->get_text('/import');
9478: my $dir=$filename;
9479: $dir=~s|[^/]*$||;
9480: $location=&filelocation($dir,$location);
9481:
9482: my $importmode=$token->[2]->{'importmode'};
9483: if ($importmode eq 'problem') {
9484: # Import as problem/response
9485: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9486: } elsif ($importmode eq 'part') {
9487: # Import as part(s)
9488: $importedparts=1;
9489: # We need to get the original file and the imported file to get the part order correct
9490: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9491: # Load and inspect original file
9492: if ($#origfileimportpartids<0) {
9493: undef(%importedpartids);
9494: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9495: my $origfile=&getfile($origfilelocation);
9496: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9497: }
9498:
9499: # Load and inspect imported file
9500: my $impfile=&getfile($location);
9501: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9502: if ($#impfilepartids>=0) {
9503: # This problem had parts
9504: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9505: } else {
9506: # Importing by turning a single problem into a problem part
9507: # It gets the import-tags ID as part-ID
9508: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9509: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9510: }
9511: } else {
9512: # Normal import
9513: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9514: if (defined($token->[2]->{'id'})) {
9515: $unikey.='_'.$token->[2]->{'id'};
9516: }
9517: }
9518:
9519: if ($depthcount<20) {
9520: my $metadata =
9521: &metadata($uri,'keys', $location,$unikey,
9522: $depthcount+1);
9523: foreach my $meta (split(',',$metadata)) {
9524: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9525: $metathesekeys{$meta}=1;
9526: }
9527:
9528: }
9529: } else {
9530: #
9531: # Not importing, some other kind of non-package, non-library start tag
9532: #
9533: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9534: if (defined($token->[2]->{'id'})) {
9535: $unikey.='_'.$token->[2]->{'id'};
9536: }
9537: if (defined($token->[2]->{'name'})) {
9538: $unikey.='_'.$token->[2]->{'name'};
9539: }
9540: $metathesekeys{$unikey}=1;
9541: foreach my $param (@{$token->[3]}) {
9542: $metaentry{':'.$unikey.'.'.$param} =
9543: $token->[2]->{$param};
9544: }
9545: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9546: my $default=$metaentry{':'.$unikey.'.default'};
9547: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9548: # only ws inside the tag, and not in default, so use default
9549: # as value
9550: $metaentry{':'.$unikey}=$default;
9551: } elsif ( $internaltext =~ /\S/ ) {
9552: # something interesting inside the tag
9553: $metaentry{':'.$unikey}=$internaltext;
9554: } else {
9555: # no interesting values, don't set a default
9556: }
9557: # end of not-a-package not-a-library import
9558: }
9559: # end of not-a-package start tag
9560: }
9561: # the next is the end of "start tag"
9562: }
9563: }
9564: my ($extension) = ($uri =~ /\.(\w+)$/);
9565: $extension = lc($extension);
9566: if ($extension eq 'htm') { $extension='html'; }
9567:
9568: foreach my $key (keys(%packagetab)) {
9569: #no specific packages #how's our extension
9570: if ($key!~/^extension_\Q$extension\E&/) { next; }
9571: &metadata_create_package_def($uri,$key,'extension_'.$extension,
9572: \%metathesekeys);
9573: }
9574:
9575: if (!exists($metaentry{':packages'})
9576: || $packagetab{"import_defaults&extension_$extension"}) {
9577: foreach my $key (keys(%packagetab)) {
9578: #no specific packages well let's get default then
9579: if ($key!~/^default&/) { next; }
9580: &metadata_create_package_def($uri,$key,'default',
9581: \%metathesekeys);
9582: }
9583: }
9584: # are there custom rights to evaluate
9585: if ($metaentry{':copyright'} eq 'custom') {
9586:
9587: #
9588: # Importing a rights file here
9589: #
9590: unless ($depthcount) {
9591: my $location=$metaentry{':customdistributionfile'};
9592: my $dir=$filename;
9593: $dir=~s|[^/]*$||;
9594: $location=&filelocation($dir,$location);
9595: my $rights_metadata =
9596: &metadata($uri,'keys',$location,'_rights',
9597: $depthcount+1);
9598: foreach my $rights (split(',',$rights_metadata)) {
9599: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
9600: $metathesekeys{$rights}=1;
9601: }
9602: }
9603: }
9604: # uniqifiy package listing
9605: my %seen;
9606: my @uniq_packages =
9607: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
9608: $metaentry{':packages'} = join(',',@uniq_packages);
9609:
9610: if ($importedparts) {
9611: # We had imported parts and need to rebuild partorder
9612: $metaentry{':partorder'}='';
9613: $metathesekeys{'partorder'}=1;
9614: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
9615: if ($origfileimportpartids[$index] eq 'part') {
9616: # original part, part of the problem
9617: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
9618: } else {
9619: # we have imported parts at this position
9620: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
9621: }
9622: }
9623: $metaentry{':partorder'}=~s/^\,//;
9624: }
9625:
9626: $metaentry{':keys'} = join(',',keys(%metathesekeys));
9627: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
9628: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
9629: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9630: # this is the end of "was not already recently cached
9631: }
9632: return $metaentry{':'.$what};
9633: }
9634:
9635: sub metadata_create_package_def {
9636: my ($uri,$key,$package,$metathesekeys)=@_;
9637: my ($pack,$name,$subp)=split(/\&/,$key);
9638: if ($subp eq 'default') { next; }
9639:
9640: if (defined($metaentry{':packages'})) {
9641: $metaentry{':packages'}.=','.$package;
9642: } else {
9643: $metaentry{':packages'}=$package;
9644: }
9645: my $value=$packagetab{$key};
9646: my $unikey;
9647: $unikey='parameter_0_'.$name;
9648: $metaentry{':'.$unikey.'.part'}=0;
9649: $$metathesekeys{$unikey}=1;
9650: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9651: $metaentry{':'.$unikey.'.'.$subp}=$value;
9652: }
9653: if (defined($metaentry{':'.$unikey.'.default'})) {
9654: $metaentry{':'.$unikey}=
9655: $metaentry{':'.$unikey.'.default'};
9656: }
9657: }
9658:
9659: sub metadata_generate_part0 {
9660: my ($metadata,$metacache,$uri) = @_;
9661: my %allnames;
9662: foreach my $metakey (keys(%$metadata)) {
9663: if ($metakey=~/^parameter\_(.*)/) {
9664: my $part=$$metacache{':'.$metakey.'.part'};
9665: my $name=$$metacache{':'.$metakey.'.name'};
9666: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9667: $allnames{$name}=$part;
9668: }
9669: }
9670: }
9671: foreach my $name (keys(%allnames)) {
9672: $$metadata{"parameter_0_$name"}=1;
9673: my $key=":parameter_0_$name";
9674: $$metacache{"$key.part"}='0';
9675: $$metacache{"$key.name"}=$name;
9676: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9677: $allnames{$name}.'_'.$name.
9678: '.type'};
9679: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9680: '.display'};
9681: my $expr='[Part: '.$allnames{$name}.']';
9682: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9683: $$metacache{"$key.display"}=$olddis;
9684: }
9685: }
9686:
9687: # ------------------------------------------------------ Devalidate title cache
9688:
9689: sub devalidate_title_cache {
9690: my ($url)=@_;
9691: if (!$env{'request.course.id'}) { return; }
9692: my $symb=&symbread($url);
9693: if (!$symb) { return; }
9694: my $key=$env{'request.course.id'}."\0".$symb;
9695: &devalidate_cache_new('title',$key);
9696: }
9697:
9698: # ------------------------------------------------- Get the title of a course
9699:
9700: sub current_course_title {
9701: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
9702: }
9703: # ------------------------------------------------- Get the title of a resource
9704:
9705: sub gettitle {
9706: my $urlsymb=shift;
9707: my $symb=&symbread($urlsymb);
9708: if ($symb) {
9709: my $key=$env{'request.course.id'}."\0".$symb;
9710: my ($result,$cached)=&is_cached_new('title',$key);
9711: if (defined($cached)) {
9712: return $result;
9713: }
9714: my ($map,$resid,$url)=&decode_symb($symb);
9715: my $title='';
9716: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
9717: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
9718: } else {
9719: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9720: &GDBM_READER(),0640)) {
9721: my $mapid=$bighash{'map_pc_'.&clutter($map)};
9722: $title=$bighash{'title_'.$mapid.'.'.$resid};
9723: untie(%bighash);
9724: }
9725: }
9726: $title=~s/\&colon\;/\:/gs;
9727: if ($title) {
9728: # Remember both $symb and $title for dynamic metadata
9729: $accesshash{$symb.'___crstitle'}=$title;
9730: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
9731: # Cache this title and then return it
9732: return &do_cache_new('title',$key,$title,600);
9733: }
9734: $urlsymb=$url;
9735: }
9736: my $title=&metadata($urlsymb,'title');
9737: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
9738: return $title;
9739: }
9740:
9741: sub get_slot {
9742: my ($which,$cnum,$cdom)=@_;
9743: if (!$cnum || !$cdom) {
9744: (undef,my $courseid)=&whichuser();
9745: $cdom=$env{'course.'.$courseid.'.domain'};
9746: $cnum=$env{'course.'.$courseid.'.num'};
9747: }
9748: my $key=join("\0",'slots',$cdom,$cnum,$which);
9749: my %slotinfo;
9750: if (exists($remembered{$key})) {
9751: $slotinfo{$which} = $remembered{$key};
9752: } else {
9753: %slotinfo=&get('slots',[$which],$cdom,$cnum);
9754: &Apache::lonhomework::showhash(%slotinfo);
9755: my ($tmp)=keys(%slotinfo);
9756: if ($tmp=~/^error:/) { return (); }
9757: $remembered{$key} = $slotinfo{$which};
9758: }
9759: if (ref($slotinfo{$which}) eq 'HASH') {
9760: return %{$slotinfo{$which}};
9761: }
9762: return $slotinfo{$which};
9763: }
9764:
9765: sub get_reservable_slots {
9766: my ($cnum,$cdom,$uname,$udom) = @_;
9767: my $now = time;
9768: my $reservable_info;
9769: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
9770: if (exists($remembered{$key})) {
9771: $reservable_info = $remembered{$key};
9772: } else {
9773: my %resv;
9774: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
9775: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
9776: $reservable_info = \%resv;
9777: $remembered{$key} = $reservable_info;
9778: }
9779: return $reservable_info;
9780: }
9781:
9782: sub get_course_slots {
9783: my ($cnum,$cdom) = @_;
9784: my $hashid=$cnum.':'.$cdom;
9785: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
9786: if (defined($cached)) {
9787: if (ref($result) eq 'HASH') {
9788: return %{$result};
9789: }
9790: } else {
9791: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
9792: my ($tmp) = keys(%slots);
9793: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9794: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
9795: return %slots;
9796: }
9797: }
9798: return;
9799: }
9800:
9801: sub devalidate_slots_cache {
9802: my ($cnum,$cdom)=@_;
9803: my $hashid=$cnum.':'.$cdom;
9804: &devalidate_cache_new('allslots',$hashid);
9805: }
9806:
9807: # ------------------------------------------------- Update symbolic store links
9808:
9809: sub symblist {
9810: my ($mapname,%newhash)=@_;
9811: $mapname=&deversion(&declutter($mapname));
9812: my %hash;
9813: if (($env{'request.course.fn'}) && (%newhash)) {
9814: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9815: &GDBM_WRCREAT(),0640)) {
9816: foreach my $url (keys(%newhash)) {
9817: next if ($url eq 'last_known'
9818: && $env{'form.no_update_last_known'});
9819: $hash{declutter($url)}=&encode_symb($mapname,
9820: $newhash{$url}->[1],
9821: $newhash{$url}->[0]);
9822: }
9823: if (untie(%hash)) {
9824: return 'ok';
9825: }
9826: }
9827: }
9828: return 'error';
9829: }
9830:
9831: # --------------------------------------------------------------- Verify a symb
9832:
9833: sub symbverify {
9834: my ($symb,$thisurl)=@_;
9835: my $thisfn=$thisurl;
9836: $thisfn=&declutter($thisfn);
9837: # direct jump to resource in page or to a sequence - will construct own symbs
9838: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
9839: # check URL part
9840: my ($map,$resid,$url)=&decode_symb($symb);
9841:
9842: unless ($url eq $thisfn) { return 0; }
9843:
9844: $symb=&symbclean($symb);
9845: $thisurl=&deversion($thisurl);
9846: $thisfn=&deversion($thisfn);
9847:
9848: my %bighash;
9849: my $okay=0;
9850:
9851: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9852: &GDBM_READER(),0640)) {
9853: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9854: $thisurl =~ s/\?.+$//;
9855: }
9856: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9857: unless ($ids) {
9858: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9859: $ids=$bighash{$idkey};
9860: }
9861: if ($ids) {
9862: # ------------------------------------------------------------------- Has ID(s)
9863: foreach my $id (split(/\,/,$ids)) {
9864: my ($mapid,$resid)=split(/\./,$id);
9865: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9866: $symb =~ s/\?.+$//;
9867: }
9868: if (
9869: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9870: eq $symb) {
9871: if (($env{'request.role.adv'}) ||
9872: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9873: ($thisurl eq '/adm/navmaps')) {
9874: $okay=1;
9875: }
9876: }
9877: }
9878: }
9879: untie(%bighash);
9880: }
9881: return $okay;
9882: }
9883:
9884: # --------------------------------------------------------------- Clean-up symb
9885:
9886: sub symbclean {
9887: my $symb=shift;
9888: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9889: # remove version from map
9890: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9891:
9892: # remove version from URL
9893: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9894:
9895: # remove wrapper
9896:
9897: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9898: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9899: return $symb;
9900: }
9901:
9902: # ---------------------------------------------- Split symb to find map and url
9903:
9904: sub encode_symb {
9905: my ($map,$resid,$url)=@_;
9906: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9907: }
9908:
9909: sub decode_symb {
9910: my $symb=shift;
9911: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9912: my ($map,$resid,$url)=split(/___/,$symb);
9913: return (&fixversion($map),$resid,&fixversion($url));
9914: }
9915:
9916: sub fixversion {
9917: my $fn=shift;
9918: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9919: my %bighash;
9920: my $uri=&clutter($fn);
9921: my $key=$env{'request.course.id'}.'_'.$uri;
9922: # is this cached?
9923: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9924: if (defined($cached)) { return $result; }
9925: # unfortunately not cached, or expired
9926: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9927: &GDBM_READER(),0640)) {
9928: if ($bighash{'version_'.$uri}) {
9929: my $version=$bighash{'version_'.$uri};
9930: unless (($version eq 'mostrecent') ||
9931: ($version==&getversion($uri))) {
9932: $uri=~s/\.(\w+)$/\.$version\.$1/;
9933: }
9934: }
9935: untie %bighash;
9936: }
9937: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9938: }
9939:
9940: sub deversion {
9941: my $url=shift;
9942: $url=~s/\.\d+\.(\w+)$/\.$1/;
9943: return $url;
9944: }
9945:
9946: # ------------------------------------------------------ Return symb list entry
9947:
9948: sub symbread {
9949: my ($thisfn,$donotrecurse)=@_;
9950: my $cache_str='request.symbread.cached.'.$thisfn;
9951: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9952: # no filename provided? try from environment
9953: unless ($thisfn) {
9954: if ($env{'request.symb'}) {
9955: return $env{$cache_str}=&symbclean($env{'request.symb'});
9956: }
9957: $thisfn=$env{'request.filename'};
9958: }
9959: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9960: # is that filename actually a symb? Verify, clean, and return
9961: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9962: if (&symbverify($thisfn,$1)) {
9963: return $env{$cache_str}=&symbclean($thisfn);
9964: }
9965: }
9966: $thisfn=declutter($thisfn);
9967: my %hash;
9968: my %bighash;
9969: my $syval='';
9970: if (($env{'request.course.fn'}) && ($thisfn)) {
9971: my $targetfn = $thisfn;
9972: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9973: $targetfn = 'adm/wrapper/'.$thisfn;
9974: }
9975: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9976: $targetfn=$1;
9977: }
9978: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9979: &GDBM_READER(),0640)) {
9980: $syval=$hash{$targetfn};
9981: untie(%hash);
9982: }
9983: # ---------------------------------------------------------- There was an entry
9984: if ($syval) {
9985: #unless ($syval=~/\_\d+$/) {
9986: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9987: #&appenv({'request.ambiguous' => $thisfn});
9988: #return $env{$cache_str}='';
9989: #}
9990: #$syval.=$1;
9991: #}
9992: } else {
9993: # ------------------------------------------------------- Was not in symb table
9994: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9995: &GDBM_READER(),0640)) {
9996: # ---------------------------------------------- Get ID(s) for current resource
9997: my $ids=$bighash{'ids_'.&clutter($thisfn)};
9998: unless ($ids) {
9999: $ids=$bighash{'ids_/'.$thisfn};
10000: }
10001: unless ($ids) {
10002: # alias?
10003: $ids=$bighash{'mapalias_'.$thisfn};
10004: }
10005: if ($ids) {
10006: # ------------------------------------------------------------------- Has ID(s)
10007: my @possibilities=split(/\,/,$ids);
10008: if ($#possibilities==0) {
10009: # ----------------------------------------------- There is only one possibility
10010: my ($mapid,$resid)=split(/\./,$ids);
10011: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10012: $resid,$thisfn);
10013: } elsif (!$donotrecurse) {
10014: # ------------------------------------------ There is more than one possibility
10015: my $realpossible=0;
10016: foreach my $id (@possibilities) {
10017: my $file=$bighash{'src_'.$id};
10018: if (&allowed('bre',$file)) {
10019: my ($mapid,$resid)=split(/\./,$id);
10020: if ($bighash{'map_type_'.$mapid} ne 'page') {
10021: $realpossible++;
10022: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10023: $resid,$thisfn);
10024: }
10025: }
10026: }
10027: if ($realpossible!=1) { $syval=''; }
10028: } else {
10029: $syval='';
10030: }
10031: }
10032: untie(%bighash)
10033: }
10034: }
10035: if ($syval) {
10036: return $env{$cache_str}=$syval;
10037: }
10038: }
10039: &appenv({'request.ambiguous' => $thisfn});
10040: return $env{$cache_str}='';
10041: }
10042:
10043: # ---------------------------------------------------------- Return random seed
10044:
10045: sub numval {
10046: my $txt=shift;
10047: $txt=~tr/A-J/0-9/;
10048: $txt=~tr/a-j/0-9/;
10049: $txt=~tr/K-T/0-9/;
10050: $txt=~tr/k-t/0-9/;
10051: $txt=~tr/U-Z/0-5/;
10052: $txt=~tr/u-z/0-5/;
10053: $txt=~s/\D//g;
10054: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10055: return int($txt);
10056: }
10057:
10058: sub numval2 {
10059: my $txt=shift;
10060: $txt=~tr/A-J/0-9/;
10061: $txt=~tr/a-j/0-9/;
10062: $txt=~tr/K-T/0-9/;
10063: $txt=~tr/k-t/0-9/;
10064: $txt=~tr/U-Z/0-5/;
10065: $txt=~tr/u-z/0-5/;
10066: $txt=~s/\D//g;
10067: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10068: my $total;
10069: foreach my $val (@txts) { $total+=$val; }
10070: if ($_64bit) { if ($total > 2**32) { return -1; } }
10071: return int($total);
10072: }
10073:
10074: sub numval3 {
10075: use integer;
10076: my $txt=shift;
10077: $txt=~tr/A-J/0-9/;
10078: $txt=~tr/a-j/0-9/;
10079: $txt=~tr/K-T/0-9/;
10080: $txt=~tr/k-t/0-9/;
10081: $txt=~tr/U-Z/0-5/;
10082: $txt=~tr/u-z/0-5/;
10083: $txt=~s/\D//g;
10084: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10085: my $total;
10086: foreach my $val (@txts) { $total+=$val; }
10087: if ($_64bit) { $total=(($total<<32)>>32); }
10088: return $total;
10089: }
10090:
10091: sub digest {
10092: my ($data)=@_;
10093: my $digest=&Digest::MD5::md5($data);
10094: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10095: my ($e,$f);
10096: {
10097: use integer;
10098: $e=($a+$b);
10099: $f=($c+$d);
10100: if ($_64bit) {
10101: $e=(($e<<32)>>32);
10102: $f=(($f<<32)>>32);
10103: }
10104: }
10105: if (wantarray) {
10106: return ($e,$f);
10107: } else {
10108: my $g;
10109: {
10110: use integer;
10111: $g=($e+$f);
10112: if ($_64bit) {
10113: $g=(($g<<32)>>32);
10114: }
10115: }
10116: return $g;
10117: }
10118: }
10119:
10120: sub latest_rnd_algorithm_id {
10121: return '64bit5';
10122: }
10123:
10124: sub get_rand_alg {
10125: my ($courseid)=@_;
10126: if (!$courseid) { $courseid=(&whichuser())[1]; }
10127: if ($courseid) {
10128: return $env{"course.$courseid.rndseed"};
10129: }
10130: return &latest_rnd_algorithm_id();
10131: }
10132:
10133: sub validCODE {
10134: my ($CODE)=@_;
10135: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10136: return 0;
10137: }
10138:
10139: sub getCODE {
10140: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10141: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10142: defined($Apache::lonhomework::parsing_a_task) ) &&
10143: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10144: return $Apache::lonhomework::history{'resource.CODE'};
10145: }
10146: return undef;
10147: }
10148: #
10149: # Determines the random seed for a specific context:
10150: #
10151: # parameters:
10152: # symb - in course context the symb for the seed.
10153: # course_id - The course id of the form domain_coursenum.
10154: # domain - Domain for the user.
10155: # course - Course for the user.
10156: # cenv - environment of the course.
10157: #
10158: # NOTE:
10159: # All parameters are picked out of the environment if missing
10160: # or not defined.
10161: # If a symb cannot be determined the current time is used instead.
10162: #
10163: # For a given well defined symb, courside, domain, username,
10164: # and course environment, the seed is reproducible.
10165: #
10166: sub rndseed {
10167: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10168: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10169: if (!defined($symb)) {
10170: unless ($symb=$wsymb) { return time; }
10171: }
10172: if (!defined $courseid) {
10173: $courseid=$wcourseid;
10174: }
10175: if (!defined $domain) { $domain=$wdomain; }
10176: if (!defined $username) { $username=$wusername }
10177:
10178: my $which;
10179: if (defined($cenv->{'rndseed'})) {
10180: $which = $cenv->{'rndseed'};
10181: } else {
10182: $which =&get_rand_alg($courseid);
10183: }
10184: if (defined(&getCODE())) {
10185:
10186: if ($which eq '64bit5') {
10187: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10188: } elsif ($which eq '64bit4') {
10189: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10190: } else {
10191: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10192: }
10193: } elsif ($which eq '64bit5') {
10194: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10195: } elsif ($which eq '64bit4') {
10196: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10197: } elsif ($which eq '64bit3') {
10198: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10199: } elsif ($which eq '64bit2') {
10200: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10201: } elsif ($which eq '64bit') {
10202: return &rndseed_64bit($symb,$courseid,$domain,$username);
10203: }
10204: return &rndseed_32bit($symb,$courseid,$domain,$username);
10205: }
10206:
10207: sub rndseed_32bit {
10208: my ($symb,$courseid,$domain,$username)=@_;
10209: {
10210: use integer;
10211: my $symbchck=unpack("%32C*",$symb) << 27;
10212: my $symbseed=numval($symb) << 22;
10213: my $namechck=unpack("%32C*",$username) << 17;
10214: my $nameseed=numval($username) << 12;
10215: my $domainseed=unpack("%32C*",$domain) << 7;
10216: my $courseseed=unpack("%32C*",$courseid);
10217: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10218: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10219: #&logthis("rndseed :$num:$symb");
10220: if ($_64bit) { $num=(($num<<32)>>32); }
10221: return $num;
10222: }
10223: }
10224:
10225: sub rndseed_64bit {
10226: my ($symb,$courseid,$domain,$username)=@_;
10227: {
10228: use integer;
10229: my $symbchck=unpack("%32S*",$symb) << 21;
10230: my $symbseed=numval($symb) << 10;
10231: my $namechck=unpack("%32S*",$username);
10232:
10233: my $nameseed=numval($username) << 21;
10234: my $domainseed=unpack("%32S*",$domain) << 10;
10235: my $courseseed=unpack("%32S*",$courseid);
10236:
10237: my $num1=$symbchck+$symbseed+$namechck;
10238: my $num2=$nameseed+$domainseed+$courseseed;
10239: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10240: #&logthis("rndseed :$num:$symb");
10241: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10242: return "$num1,$num2";
10243: }
10244: }
10245:
10246: sub rndseed_64bit2 {
10247: my ($symb,$courseid,$domain,$username)=@_;
10248: {
10249: use integer;
10250: # strings need to be an even # of cahracters long, it it is odd the
10251: # last characters gets thrown away
10252: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10253: my $symbseed=numval($symb) << 10;
10254: my $namechck=unpack("%32S*",$username.' ');
10255:
10256: my $nameseed=numval($username) << 21;
10257: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10258: my $courseseed=unpack("%32S*",$courseid.' ');
10259:
10260: my $num1=$symbchck+$symbseed+$namechck;
10261: my $num2=$nameseed+$domainseed+$courseseed;
10262: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10263: #&logthis("rndseed :$num:$symb");
10264: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10265: return "$num1,$num2";
10266: }
10267: }
10268:
10269: sub rndseed_64bit3 {
10270: my ($symb,$courseid,$domain,$username)=@_;
10271: {
10272: use integer;
10273: # strings need to be an even # of cahracters long, it it is odd the
10274: # last characters gets thrown away
10275: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10276: my $symbseed=numval2($symb) << 10;
10277: my $namechck=unpack("%32S*",$username.' ');
10278:
10279: my $nameseed=numval2($username) << 21;
10280: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10281: my $courseseed=unpack("%32S*",$courseid.' ');
10282:
10283: my $num1=$symbchck+$symbseed+$namechck;
10284: my $num2=$nameseed+$domainseed+$courseseed;
10285: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10286: #&logthis("rndseed :$num1:$num2:$_64bit");
10287: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10288:
10289: return "$num1:$num2";
10290: }
10291: }
10292:
10293: sub rndseed_64bit4 {
10294: my ($symb,$courseid,$domain,$username)=@_;
10295: {
10296: use integer;
10297: # strings need to be an even # of cahracters long, it it is odd the
10298: # last characters gets thrown away
10299: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10300: my $symbseed=numval3($symb) << 10;
10301: my $namechck=unpack("%32S*",$username.' ');
10302:
10303: my $nameseed=numval3($username) << 21;
10304: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10305: my $courseseed=unpack("%32S*",$courseid.' ');
10306:
10307: my $num1=$symbchck+$symbseed+$namechck;
10308: my $num2=$nameseed+$domainseed+$courseseed;
10309: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10310: #&logthis("rndseed :$num1:$num2:$_64bit");
10311: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10312:
10313: return "$num1:$num2";
10314: }
10315: }
10316:
10317: sub rndseed_64bit5 {
10318: my ($symb,$courseid,$domain,$username)=@_;
10319: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10320: return "$num1:$num2";
10321: }
10322:
10323: sub rndseed_CODE_64bit {
10324: my ($symb,$courseid,$domain,$username)=@_;
10325: {
10326: use integer;
10327: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10328: my $symbseed=numval2($symb);
10329: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10330: my $CODEseed=numval(&getCODE());
10331: my $courseseed=unpack("%32S*",$courseid.' ');
10332: my $num1=$symbseed+$CODEchck;
10333: my $num2=$CODEseed+$courseseed+$symbchck;
10334: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10335: #&logthis("rndseed :$num1:$num2:$symb");
10336: if ($_64bit) { $num1=(($num1<<32)>>32); }
10337: if ($_64bit) { $num2=(($num2<<32)>>32); }
10338: return "$num1:$num2";
10339: }
10340: }
10341:
10342: sub rndseed_CODE_64bit4 {
10343: my ($symb,$courseid,$domain,$username)=@_;
10344: {
10345: use integer;
10346: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10347: my $symbseed=numval3($symb);
10348: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10349: my $CODEseed=numval3(&getCODE());
10350: my $courseseed=unpack("%32S*",$courseid.' ');
10351: my $num1=$symbseed+$CODEchck;
10352: my $num2=$CODEseed+$courseseed+$symbchck;
10353: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10354: #&logthis("rndseed :$num1:$num2:$symb");
10355: if ($_64bit) { $num1=(($num1<<32)>>32); }
10356: if ($_64bit) { $num2=(($num2<<32)>>32); }
10357: return "$num1:$num2";
10358: }
10359: }
10360:
10361: sub rndseed_CODE_64bit5 {
10362: my ($symb,$courseid,$domain,$username)=@_;
10363: my $code = &getCODE();
10364: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10365: return "$num1:$num2";
10366: }
10367:
10368: sub setup_random_from_rndseed {
10369: my ($rndseed)=@_;
10370: if ($rndseed =~/([,:])/) {
10371: my ($num1,$num2)=split(/[,:]/,$rndseed);
10372: &Math::Random::random_set_seed(abs($num1),abs($num2));
10373: } else {
10374: &Math::Random::random_set_seed_from_phrase($rndseed);
10375: }
10376: }
10377:
10378: sub latest_receipt_algorithm_id {
10379: return 'receipt3';
10380: }
10381:
10382: sub recunique {
10383: my $fucourseid=shift;
10384: my $unique;
10385: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10386: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10387: $unique=$env{"course.$fucourseid.internal.encseed"};
10388: } else {
10389: $unique=$perlvar{'lonReceipt'};
10390: }
10391: return unpack("%32C*",$unique);
10392: }
10393:
10394: sub recprefix {
10395: my $fucourseid=shift;
10396: my $prefix;
10397: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10398: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10399: $prefix=$env{"course.$fucourseid.internal.encpref"};
10400: } else {
10401: $prefix=$perlvar{'lonHostID'};
10402: }
10403: return unpack("%32C*",$prefix);
10404: }
10405:
10406: sub ireceipt {
10407: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10408:
10409: my $return =&recprefix($fucourseid).'-';
10410:
10411: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10412: $env{'request.state'} eq 'construct') {
10413: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10414: return $return;
10415: }
10416:
10417: my $cuname=unpack("%32C*",$funame);
10418: my $cudom=unpack("%32C*",$fudom);
10419: my $cucourseid=unpack("%32C*",$fucourseid);
10420: my $cusymb=unpack("%32C*",$fusymb);
10421: my $cunique=&recunique($fucourseid);
10422: my $cpart=unpack("%32S*",$part);
10423: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10424:
10425: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10426:
10427: $return.= ($cunique%$cuname+
10428: $cunique%$cudom+
10429: $cusymb%$cuname+
10430: $cusymb%$cudom+
10431: $cucourseid%$cuname+
10432: $cucourseid%$cudom+
10433: $cpart%$cuname+
10434: $cpart%$cudom);
10435: } else {
10436: $return.= ($cunique%$cuname+
10437: $cunique%$cudom+
10438: $cusymb%$cuname+
10439: $cusymb%$cudom+
10440: $cucourseid%$cuname+
10441: $cucourseid%$cudom);
10442: }
10443: return $return;
10444: }
10445:
10446: sub receipt {
10447: my ($part)=@_;
10448: my ($symb,$courseid,$domain,$name) = &whichuser();
10449: return &ireceipt($name,$domain,$courseid,$symb,$part);
10450: }
10451:
10452: sub whichuser {
10453: my ($passedsymb)=@_;
10454: my ($symb,$courseid,$domain,$name,$publicuser);
10455: if (defined($env{'form.grade_symb'})) {
10456: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10457: my $allowed=&allowed('vgr',$tmp_courseid);
10458: if (!$allowed &&
10459: exists($env{'request.course.sec'}) &&
10460: $env{'request.course.sec'} !~ /^\s*$/) {
10461: $allowed=&allowed('vgr',$tmp_courseid.
10462: '/'.$env{'request.course.sec'});
10463: }
10464: if ($allowed) {
10465: ($symb)=&get_env_multiple('form.grade_symb');
10466: $courseid=$tmp_courseid;
10467: ($domain)=&get_env_multiple('form.grade_domain');
10468: ($name)=&get_env_multiple('form.grade_username');
10469: return ($symb,$courseid,$domain,$name,$publicuser);
10470: }
10471: }
10472: if (!$passedsymb) {
10473: $symb=&symbread();
10474: } else {
10475: $symb=$passedsymb;
10476: }
10477: $courseid=$env{'request.course.id'};
10478: $domain=$env{'user.domain'};
10479: $name=$env{'user.name'};
10480: if ($name eq 'public' && $domain eq 'public') {
10481: if (!defined($env{'form.username'})) {
10482: $env{'form.username'}.=time.rand(10000000);
10483: }
10484: $name.=$env{'form.username'};
10485: }
10486: return ($symb,$courseid,$domain,$name,$publicuser);
10487:
10488: }
10489:
10490: # ------------------------------------------------------------ Serves up a file
10491: # returns either the contents of the file or
10492: # -1 if the file doesn't exist
10493: #
10494: # if the target is a file that was uploaded via DOCS,
10495: # a check will be made to see if a current copy exists on the local server,
10496: # if it does this will be served, otherwise a copy will be retrieved from
10497: # the home server for the course and stored in /home/httpd/html/userfiles on
10498: # the local server.
10499:
10500: sub getfile {
10501: my ($file) = @_;
10502: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10503: &repcopy($file);
10504: return &readfile($file);
10505: }
10506:
10507: sub repcopy_userfile {
10508: my ($file)=@_;
10509: my $londocroot = $perlvar{'lonDocRoot'};
10510: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10511: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10512: my ($cdom,$cnum,$filename) =
10513: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10514: my $uri="/uploaded/$cdom/$cnum/$filename";
10515: if (-e "$file") {
10516: # we already have a local copy, check it out
10517: my @fileinfo = stat($file);
10518: my $rtncode;
10519: my $info;
10520: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
10521: if ($lwpresp ne 'ok') {
10522: # there is no such file anymore, even though we had a local copy
10523: if ($rtncode eq '404') {
10524: unlink($file);
10525: }
10526: return -1;
10527: }
10528: if ($info < $fileinfo[9]) {
10529: # nice, the file we have is up-to-date, just say okay
10530: return 'ok';
10531: } else {
10532: # the file is outdated, get rid of it
10533: unlink($file);
10534: }
10535: }
10536: # one way or the other, at this point, we don't have the file
10537: # construct the correct path for the file
10538: my @parts = ($cdom,$cnum);
10539: if ($filename =~ m|^(.+)/[^/]+$|) {
10540: push @parts, split(/\//,$1);
10541: }
10542: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
10543: foreach my $part (@parts) {
10544: $path .= '/'.$part;
10545: if (!-e $path) {
10546: mkdir($path,0770);
10547: }
10548: }
10549: # now the path exists for sure
10550: # get a user agent
10551: my $ua=new LWP::UserAgent;
10552: my $transferfile=$file.'.in.transfer';
10553: # FIXME: this should flock
10554: if (-e $transferfile) { return 'ok'; }
10555: my $request;
10556: $uri=~s/^\///;
10557: my $homeserver = &homeserver($cnum,$cdom);
10558: my $protocol = $protocol{$homeserver};
10559: $protocol = 'http' if ($protocol ne 'https');
10560: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
10561: my $response=$ua->request($request,$transferfile);
10562: # did it work?
10563: if ($response->is_error()) {
10564: unlink($transferfile);
10565: &logthis("Userfile repcopy failed for $uri");
10566: return -1;
10567: }
10568: # worked, rename the transfer file
10569: rename($transferfile,$file);
10570: return 'ok';
10571: }
10572:
10573: sub tokenwrapper {
10574: my $uri=shift;
10575: $uri=~s|^https?\://([^/]+)||;
10576: $uri=~s|^/||;
10577: $env{'user.environment'}=~/\/([^\/]+)\.id/;
10578: my $token=$1;
10579: my (undef,$udom,$uname,$file)=split('/',$uri,4);
10580: if ($udom && $uname && $file) {
10581: $file=~s|(\?\.*)*$||;
10582: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
10583: my $homeserver = &homeserver($uname,$udom);
10584: my $protocol = $protocol{$homeserver};
10585: $protocol = 'http' if ($protocol ne 'https');
10586: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
10587: (($uri=~/\?/)?'&':'?').'token='.$token.
10588: '&tokenissued='.$perlvar{'lonHostID'};
10589: } else {
10590: return '/adm/notfound.html';
10591: }
10592: }
10593:
10594: # call with reqtype HEAD: get last modification time
10595: # call with reqtype GET: get the file contents
10596: # Do not call this with reqtype GET for large files! It loads everything into memory
10597: #
10598: sub getuploaded {
10599: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
10600: $uri=~s/^\///;
10601: my $homeserver = &homeserver($cnum,$cdom);
10602: my $protocol = $protocol{$homeserver};
10603: $protocol = 'http' if ($protocol ne 'https');
10604: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
10605: my $ua=new LWP::UserAgent;
10606: my $request=new HTTP::Request($reqtype,$uri);
10607: my $response=$ua->request($request);
10608: $$rtncode = $response->code;
10609: if (! $response->is_success()) {
10610: return 'failed';
10611: }
10612: if ($reqtype eq 'HEAD') {
10613: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
10614: } elsif ($reqtype eq 'GET') {
10615: $$info = $response->content;
10616: }
10617: return 'ok';
10618: }
10619:
10620: sub readfile {
10621: my $file = shift;
10622: if ( (! -e $file ) || ($file eq '') ) { return -1; };
10623: my $fh;
10624: open($fh,"<$file");
10625: my $a='';
10626: while (my $line = <$fh>) { $a .= $line; }
10627: return $a;
10628: }
10629:
10630: sub filelocation {
10631: my ($dir,$file) = @_;
10632: my $location;
10633: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
10634:
10635: if ($file =~ m-^/adm/-) {
10636: $file=~s-^/adm/wrapper/-/-;
10637: $file=~s-^/adm/coursedocs/showdoc/-/-;
10638: }
10639:
10640: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
10641: $location = $file;
10642: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
10643: my ($udom,$uname,$filename)=
10644: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
10645: my $home=&homeserver($uname,$udom);
10646: my $is_me=0;
10647: my @ids=¤t_machine_ids();
10648: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
10649: if ($is_me) {
10650: $location=propath($udom,$uname).'/userfiles/'.$filename;
10651: } else {
10652: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
10653: $udom.'/'.$uname.'/'.$filename;
10654: }
10655: } elsif ($file =~ m-^/adm/-) {
10656: $location = $perlvar{'lonDocRoot'}.'/'.$file;
10657: } else {
10658: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10659: $file=~s:^/(res|priv)/:/:;
10660: my $space=$1;
10661: if ( !( $file =~ m:^/:) ) {
10662: $location = $dir. '/'.$file;
10663: } else {
10664: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
10665: }
10666: }
10667: $location=~s://+:/:g; # remove duplicate /
10668: while ($location=~m{/\.\./}) {
10669: if ($location =~ m{/[^/]+/\.\./}) {
10670: $location=~ s{/[^/]+/\.\./}{/}g;
10671: } else {
10672: $location=~ s{/\.\./}{/}g;
10673: }
10674: } #remove dir/..
10675: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
10676: return $location;
10677: }
10678:
10679: sub hreflocation {
10680: my ($dir,$file)=@_;
10681: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
10682: $file=filelocation($dir,$file);
10683: } elsif ($file=~m-^/adm/-) {
10684: $file=~s-^/adm/wrapper/-/-;
10685: $file=~s-^/adm/coursedocs/showdoc/-/-;
10686: }
10687: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
10688: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
10689: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
10690: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
10691: {/uploaded/$1/$2/}x;
10692: }
10693: if ($file=~ m{^/userfiles/}) {
10694: $file =~ s{^/userfiles/}{/uploaded/};
10695: }
10696: return $file;
10697: }
10698:
10699:
10700:
10701:
10702:
10703: sub current_machine_domains {
10704: return &machine_domains(&hostname($perlvar{'lonHostID'}));
10705: }
10706:
10707: sub machine_domains {
10708: my ($hostname) = @_;
10709: my @domains;
10710: my %hostname = &all_hostnames();
10711: while( my($id, $name) = each(%hostname)) {
10712: # &logthis("-$id-$name-$hostname-");
10713: if ($hostname eq $name) {
10714: push(@domains,&host_domain($id));
10715: }
10716: }
10717: return @domains;
10718: }
10719:
10720: sub current_machine_ids {
10721: return &machine_ids(&hostname($perlvar{'lonHostID'}));
10722: }
10723:
10724: sub machine_ids {
10725: my ($hostname) = @_;
10726: $hostname ||= &hostname($perlvar{'lonHostID'});
10727: my @ids;
10728: my %name_to_host = &all_names();
10729: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
10730: return @{ $name_to_host{$hostname} };
10731: }
10732: return;
10733: }
10734:
10735: sub additional_machine_domains {
10736: my @domains;
10737: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
10738: while( my $line = <$fh>) {
10739: $line =~ s/\s//g;
10740: push(@domains,$line);
10741: }
10742: return @domains;
10743: }
10744:
10745: sub default_login_domain {
10746: my $domain = $perlvar{'lonDefDomain'};
10747: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
10748: foreach my $posdom (¤t_machine_domains(),
10749: &additional_machine_domains()) {
10750: if (lc($posdom) eq lc($testdomain)) {
10751: $domain=$posdom;
10752: last;
10753: }
10754: }
10755: return $domain;
10756: }
10757:
10758: # ------------------------------------------------------------- Declutters URLs
10759:
10760: sub declutter {
10761: my $thisfn=shift;
10762: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10763: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10764: $thisfn=~s/^\///;
10765: $thisfn=~s|^adm/wrapper/||;
10766: $thisfn=~s|^adm/coursedocs/showdoc/||;
10767: $thisfn=~s/^res\///;
10768: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
10769: $thisfn=~s/\?.+$//;
10770: }
10771: return $thisfn;
10772: }
10773:
10774: # ------------------------------------------------------------- Clutter up URLs
10775:
10776: sub clutter {
10777: my $thisfn='/'.&declutter(shift);
10778: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
10779: || $thisfn =~ m{^/adm/(includes|pages)} ) {
10780: $thisfn='/res'.$thisfn;
10781: }
10782: if ($thisfn !~m|^/adm|) {
10783: if ($thisfn =~ m|^/ext/|) {
10784: $thisfn='/adm/wrapper'.$thisfn;
10785: } else {
10786: my ($ext) = ($thisfn =~ /\.(\w+)$/);
10787: my $embstyle=&Apache::loncommon::fileembstyle($ext);
10788: if ($embstyle eq 'ssi'
10789: || ($embstyle eq 'hdn')
10790: || ($embstyle eq 'rat')
10791: || ($embstyle eq 'prv')
10792: || ($embstyle eq 'ign')) {
10793: #do nothing with these
10794: } elsif (($embstyle eq 'img')
10795: || ($embstyle eq 'emb')
10796: || ($embstyle eq 'wrp')) {
10797: $thisfn='/adm/wrapper'.$thisfn;
10798: } elsif ($embstyle eq 'unk'
10799: && $thisfn!~/\.(sequence|page)$/) {
10800: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
10801: } else {
10802: # &logthis("Got a blank emb style");
10803: }
10804: }
10805: }
10806: return $thisfn;
10807: }
10808:
10809: sub clutter_with_no_wrapper {
10810: my $uri = &clutter(shift);
10811: if ($uri =~ m-^/adm/-) {
10812: $uri =~ s-^/adm/wrapper/-/-;
10813: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
10814: }
10815: return $uri;
10816: }
10817:
10818: sub freeze_escape {
10819: my ($value)=@_;
10820: if (ref($value)) {
10821: $value=&nfreeze($value);
10822: return '__FROZEN__'.&escape($value);
10823: }
10824: return &escape($value);
10825: }
10826:
10827:
10828: sub thaw_unescape {
10829: my ($value)=@_;
10830: if ($value =~ /^__FROZEN__/) {
10831: substr($value,0,10,undef);
10832: $value=&unescape($value);
10833: return &thaw($value);
10834: }
10835: return &unescape($value);
10836: }
10837:
10838: sub correct_line_ends {
10839: my ($result)=@_;
10840: $$result =~s/\r\n/\n/mg;
10841: $$result =~s/\r/\n/mg;
10842: }
10843: # ================================================================ Main Program
10844:
10845: sub goodbye {
10846: &logthis("Starting Shut down");
10847: #not converted to using infrastruture and probably shouldn't be
10848: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
10849: #converted
10850: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
10851: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
10852: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
10853: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
10854: #1.1 only
10855: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
10856: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
10857: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
10858: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
10859: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
10860: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
10861: &logthis(sprintf("%-20s is %s",'hits',$hits));
10862: &flushcourselogs();
10863: &logthis("Shutting down");
10864: }
10865:
10866: sub get_dns {
10867: my ($url,$func,$ignore_cache) = @_;
10868: if (!$ignore_cache) {
10869: my ($content,$cached)=
10870: &Apache::lonnet::is_cached_new('dns',$url);
10871: if ($cached) {
10872: &$func($content);
10873: return;
10874: }
10875: }
10876:
10877: my %alldns;
10878: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10879: foreach my $dns (<$config>) {
10880: next if ($dns !~ /^\^(\S*)/x);
10881: my $line = $1;
10882: my ($host,$protocol) = split(/:/,$line);
10883: if ($protocol ne 'https') {
10884: $protocol = 'http';
10885: }
10886: $alldns{$host} = $protocol;
10887: }
10888: while (%alldns) {
10889: my ($dns) = keys(%alldns);
10890: my $ua=new LWP::UserAgent;
10891: $ua->timeout(30);
10892: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10893: my $response=$ua->request($request);
10894: delete($alldns{$dns});
10895: next if ($response->is_error());
10896: my @content = split("\n",$response->content);
10897: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10898: &$func(\@content);
10899: return;
10900: }
10901: close($config);
10902: my $which = (split('/',$url))[3];
10903: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10904: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10905: my @content = <$config>;
10906: &$func(\@content);
10907: return;
10908: }
10909: # ------------------------------------------------------------ Read domain file
10910: {
10911: my $loaded;
10912: my %domain;
10913:
10914: sub parse_domain_tab {
10915: my ($lines) = @_;
10916: foreach my $line (@$lines) {
10917: next if ($line =~ /^(\#|\s*$ )/x);
10918:
10919: chomp($line);
10920: my ($name,@elements) = split(/:/,$line,9);
10921: my %this_domain;
10922: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10923: 'lang_def', 'city', 'longi', 'lati',
10924: 'primary') {
10925: $this_domain{$field} = shift(@elements);
10926: }
10927: $domain{$name} = \%this_domain;
10928: }
10929: }
10930:
10931: sub reset_domain_info {
10932: undef($loaded);
10933: undef(%domain);
10934: }
10935:
10936: sub load_domain_tab {
10937: my ($ignore_cache) = @_;
10938: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10939: my $fh;
10940: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10941: my @lines = <$fh>;
10942: &parse_domain_tab(\@lines);
10943: }
10944: close($fh);
10945: $loaded = 1;
10946: }
10947:
10948: sub domain {
10949: &load_domain_tab() if (!$loaded);
10950:
10951: my ($name,$what) = @_;
10952: return if ( !exists($domain{$name}) );
10953:
10954: if (!$what) {
10955: return $domain{$name}{'description'};
10956: }
10957: return $domain{$name}{$what};
10958: }
10959:
10960: sub domain_info {
10961: &load_domain_tab() if (!$loaded);
10962: return %domain;
10963: }
10964:
10965: }
10966:
10967:
10968: # ------------------------------------------------------------- Read hosts file
10969: {
10970: my %hostname;
10971: my %hostdom;
10972: my %libserv;
10973: my $loaded;
10974: my %name_to_host;
10975: my %internetdom;
10976: my %LC_dns_serv;
10977:
10978: sub parse_hosts_tab {
10979: my ($file) = @_;
10980: foreach my $configline (@$file) {
10981: next if ($configline =~ /^(\#|\s*$ )/x);
10982: chomp($configline);
10983: if ($configline =~ /^\^/) {
10984: if ($configline =~ /^\^([\w.\-]+)/) {
10985: $LC_dns_serv{$1} = 1;
10986: }
10987: next;
10988: }
10989: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10990: $name=~s/\s//g;
10991: if ($id && $domain && $role && $name) {
10992: $hostname{$id}=$name;
10993: push(@{$name_to_host{$name}}, $id);
10994: $hostdom{$id}=$domain;
10995: if ($role eq 'library') { $libserv{$id}=$name; }
10996: if (defined($protocol)) {
10997: if ($protocol eq 'https') {
10998: $protocol{$id} = $protocol;
10999: } else {
11000: $protocol{$id} = 'http';
11001: }
11002: } else {
11003: $protocol{$id} = 'http';
11004: }
11005: if (defined($intdom)) {
11006: $internetdom{$id} = $intdom;
11007: }
11008: }
11009: }
11010: }
11011:
11012: sub reset_hosts_info {
11013: &purge_remembered();
11014: &reset_domain_info();
11015: &reset_hosts_ip_info();
11016: undef(%name_to_host);
11017: undef(%hostname);
11018: undef(%hostdom);
11019: undef(%libserv);
11020: undef($loaded);
11021: }
11022:
11023: sub load_hosts_tab {
11024: my ($ignore_cache) = @_;
11025: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11026: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11027: my @config = <$config>;
11028: &parse_hosts_tab(\@config);
11029: close($config);
11030: $loaded=1;
11031: }
11032:
11033: sub hostname {
11034: &load_hosts_tab() if (!$loaded);
11035:
11036: my ($lonid) = @_;
11037: return $hostname{$lonid};
11038: }
11039:
11040: sub all_hostnames {
11041: &load_hosts_tab() if (!$loaded);
11042:
11043: return %hostname;
11044: }
11045:
11046: sub all_names {
11047: &load_hosts_tab() if (!$loaded);
11048:
11049: return %name_to_host;
11050: }
11051:
11052: sub all_host_domain {
11053: &load_hosts_tab() if (!$loaded);
11054: return %hostdom;
11055: }
11056:
11057: sub is_library {
11058: &load_hosts_tab() if (!$loaded);
11059:
11060: return exists($libserv{$_[0]});
11061: }
11062:
11063: sub all_library {
11064: &load_hosts_tab() if (!$loaded);
11065:
11066: return %libserv;
11067: }
11068:
11069: sub unique_library {
11070: #2x reverse removes all hostnames that appear more than once
11071: my %unique = reverse &all_library();
11072: return reverse %unique;
11073: }
11074:
11075: sub get_servers {
11076: &load_hosts_tab() if (!$loaded);
11077:
11078: my ($domain,$type) = @_;
11079: my %possible_hosts = ($type eq 'library') ? %libserv
11080: : %hostname;
11081: my %result;
11082: if (ref($domain) eq 'ARRAY') {
11083: while ( my ($host,$hostname) = each(%possible_hosts)) {
11084: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11085: $result{$host} = $hostname;
11086: }
11087: }
11088: } else {
11089: while ( my ($host,$hostname) = each(%possible_hosts)) {
11090: if ($hostdom{$host} eq $domain) {
11091: $result{$host} = $hostname;
11092: }
11093: }
11094: }
11095: return %result;
11096: }
11097:
11098: sub get_unique_servers {
11099: my %unique = reverse &get_servers(@_);
11100: return reverse %unique;
11101: }
11102:
11103: sub host_domain {
11104: &load_hosts_tab() if (!$loaded);
11105:
11106: my ($lonid) = @_;
11107: return $hostdom{$lonid};
11108: }
11109:
11110: sub all_domains {
11111: &load_hosts_tab() if (!$loaded);
11112:
11113: my %seen;
11114: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11115: return @uniq;
11116: }
11117:
11118: sub internet_dom {
11119: &load_hosts_tab() if (!$loaded);
11120:
11121: my ($lonid) = @_;
11122: return $internetdom{$lonid};
11123: }
11124:
11125: sub is_LC_dns {
11126: &load_hosts_tab() if (!$loaded);
11127:
11128: my ($hostname) = @_;
11129: return exists($LC_dns_serv{$hostname});
11130: }
11131:
11132: }
11133:
11134: {
11135: my %iphost;
11136: my %name_to_ip;
11137: my %lonid_to_ip;
11138:
11139: sub get_hosts_from_ip {
11140: my ($ip) = @_;
11141: my %iphosts = &get_iphost();
11142: if (ref($iphosts{$ip})) {
11143: return @{$iphosts{$ip}};
11144: }
11145: return;
11146: }
11147:
11148: sub reset_hosts_ip_info {
11149: undef(%iphost);
11150: undef(%name_to_ip);
11151: undef(%lonid_to_ip);
11152: }
11153:
11154: sub get_host_ip {
11155: my ($lonid) = @_;
11156: if (exists($lonid_to_ip{$lonid})) {
11157: return $lonid_to_ip{$lonid};
11158: }
11159: my $name=&hostname($lonid);
11160: my $ip = gethostbyname($name);
11161: return if (!$ip || length($ip) ne 4);
11162: $ip=inet_ntoa($ip);
11163: $name_to_ip{$name} = $ip;
11164: $lonid_to_ip{$lonid} = $ip;
11165: return $ip;
11166: }
11167:
11168: sub get_iphost {
11169: my ($ignore_cache) = @_;
11170:
11171: if (!$ignore_cache) {
11172: if (%iphost) {
11173: return %iphost;
11174: }
11175: my ($ip_info,$cached)=
11176: &Apache::lonnet::is_cached_new('iphost','iphost');
11177: if ($cached) {
11178: %iphost = %{$ip_info->[0]};
11179: %name_to_ip = %{$ip_info->[1]};
11180: %lonid_to_ip = %{$ip_info->[2]};
11181: return %iphost;
11182: }
11183: }
11184:
11185: # get yesterday's info for fallback
11186: my %old_name_to_ip;
11187: my ($ip_info,$cached)=
11188: &Apache::lonnet::is_cached_new('iphost','iphost');
11189: if ($cached) {
11190: %old_name_to_ip = %{$ip_info->[1]};
11191: }
11192:
11193: my %name_to_host = &all_names();
11194: foreach my $name (keys(%name_to_host)) {
11195: my $ip;
11196: if (!exists($name_to_ip{$name})) {
11197: $ip = gethostbyname($name);
11198: if (!$ip || length($ip) ne 4) {
11199: if (defined($old_name_to_ip{$name})) {
11200: $ip = $old_name_to_ip{$name};
11201: &logthis("Can't find $name defaulting to old $ip");
11202: } else {
11203: &logthis("Name $name no IP found");
11204: next;
11205: }
11206: } else {
11207: $ip=inet_ntoa($ip);
11208: }
11209: $name_to_ip{$name} = $ip;
11210: } else {
11211: $ip = $name_to_ip{$name};
11212: }
11213: foreach my $id (@{ $name_to_host{$name} }) {
11214: $lonid_to_ip{$id} = $ip;
11215: }
11216: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11217: }
11218: &Apache::lonnet::do_cache_new('iphost','iphost',
11219: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11220: 48*60*60);
11221:
11222: return %iphost;
11223: }
11224:
11225: #
11226: # Given a DNS returns the loncapa host name for that DNS
11227: #
11228: sub host_from_dns {
11229: my ($dns) = @_;
11230: my @hosts;
11231: my $ip;
11232:
11233: if (exists($name_to_ip{$dns})) {
11234: $ip = $name_to_ip{$dns};
11235: }
11236: if (!$ip) {
11237: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11238: if (length($ip) == 4) {
11239: $ip = &IO::Socket::inet_ntoa($ip);
11240: }
11241: }
11242: if ($ip) {
11243: @hosts = get_hosts_from_ip($ip);
11244: return $hosts[0];
11245: }
11246: return undef;
11247: }
11248:
11249: sub get_internet_names {
11250: my ($lonid) = @_;
11251: return if ($lonid eq '');
11252: my ($idnref,$cached)=
11253: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11254: if ($cached) {
11255: return $idnref;
11256: }
11257: my $ip = &get_host_ip($lonid);
11258: my @hosts = &get_hosts_from_ip($ip);
11259: my %iphost = &get_iphost();
11260: my (@idns,%seen);
11261: foreach my $id (@hosts) {
11262: my $dom = &host_domain($id);
11263: my $prim_id = &domain($dom,'primary');
11264: my $prim_ip = &get_host_ip($prim_id);
11265: next if ($seen{$prim_ip});
11266: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11267: foreach my $id (@{$iphost{$prim_ip}}) {
11268: my $intdom = &internet_dom($id);
11269: unless (grep(/^\Q$intdom\E$/,@idns)) {
11270: push(@idns,$intdom);
11271: }
11272: }
11273: }
11274: $seen{$prim_ip} = 1;
11275: }
11276: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11277: }
11278:
11279: }
11280:
11281: sub all_loncaparevs {
11282: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11283: }
11284:
11285: BEGIN {
11286:
11287: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11288: unless ($readit) {
11289: {
11290: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11291: %perlvar = (%perlvar,%{$configvars});
11292: }
11293:
11294:
11295: # ------------------------------------------------------ Read spare server file
11296: {
11297: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11298:
11299: while (my $configline=<$config>) {
11300: chomp($configline);
11301: if ($configline) {
11302: my ($host,$type) = split(':',$configline,2);
11303: if (!defined($type) || $type eq '') { $type = 'default' };
11304: push(@{ $spareid{$type} }, $host);
11305: }
11306: }
11307: close($config);
11308: }
11309: # ------------------------------------------------------------ Read permissions
11310: {
11311: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11312:
11313: while (my $configline=<$config>) {
11314: chomp($configline);
11315: if ($configline) {
11316: my ($role,$perm)=split(/ /,$configline);
11317: if ($perm ne '') { $pr{$role}=$perm; }
11318: }
11319: }
11320: close($config);
11321: }
11322:
11323: # -------------------------------------------- Read plain texts for permissions
11324: {
11325: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11326:
11327: while (my $configline=<$config>) {
11328: chomp($configline);
11329: if ($configline) {
11330: my ($short,@plain)=split(/:/,$configline);
11331: %{$prp{$short}} = ();
11332: if (@plain > 0) {
11333: $prp{$short}{'std'} = $plain[0];
11334: for (my $i=1; $i<@plain; $i++) {
11335: $prp{$short}{'alt'.$i} = $plain[$i];
11336: }
11337: }
11338: }
11339: }
11340: close($config);
11341: }
11342:
11343: # ---------------------------------------------------------- Read package table
11344: {
11345: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11346:
11347: while (my $configline=<$config>) {
11348: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11349: chomp($configline);
11350: my ($short,$plain)=split(/:/,$configline);
11351: my ($pack,$name)=split(/\&/,$short);
11352: if ($plain ne '') {
11353: $packagetab{$pack.'&'.$name.'&name'}=$name;
11354: $packagetab{$short}=$plain;
11355: }
11356: }
11357: close($config);
11358: }
11359:
11360: # ---------------------------------------------------------- Read loncaparev table
11361: {
11362: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11363: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11364: while (my $configline=<$config>) {
11365: chomp($configline);
11366: my ($hostid,$loncaparev)=split(/:/,$configline);
11367: $loncaparevs{$hostid}=$loncaparev;
11368: }
11369: close($config);
11370: }
11371: }
11372: }
11373:
11374: # ---------------------------------------------------------- Read serverhostID table
11375: {
11376: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11377: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11378: while (my $configline=<$config>) {
11379: chomp($configline);
11380: my ($name,$id)=split(/:/,$configline);
11381: $serverhomeIDs{$name}=$id;
11382: }
11383: close($config);
11384: }
11385: }
11386: }
11387:
11388: {
11389: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11390: if (-e $file) {
11391: my $parser = HTML::LCParser->new($file);
11392: while (my $token = $parser->get_token()) {
11393: if ($token->[0] eq 'S') {
11394: my $item = $token->[1];
11395: my $name = $token->[2]{'name'};
11396: my $value = $token->[2]{'value'};
11397: if ($item ne '' && $name ne '' && $value ne '') {
11398: my $release = $parser->get_text();
11399: $release =~ s/(^\s*|\s*$ )//gx;
11400: $needsrelease{$item.':'.$name.':'.$value} = $release;
11401: }
11402: }
11403: }
11404: }
11405: }
11406:
11407: # ---------------------------------------------------------- Read managers table
11408: {
11409: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11410: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11411: while (my $configline=<$config>) {
11412: chomp($configline);
11413: next if ($configline =~ /^\#/);
11414: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11415: $managerstab{$configline} = 1;
11416: }
11417: }
11418: close($config);
11419: }
11420: }
11421: }
11422:
11423: # ------------- set up temporary directory
11424: {
11425: $tmpdir = LONCAPA::tempdir();
11426:
11427: }
11428:
11429: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11430: 'compress_threshold'=> 20_000,
11431: });
11432:
11433: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11434: $dumpcount=0;
11435: $locknum=0;
11436:
11437: &logtouch();
11438: &logthis('<font color="yellow">INFO: Read configuration</font>');
11439: $readit=1;
11440: {
11441: use integer;
11442: my $test=(2**32)+1;
11443: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11444: &logthis(" Detected 64bit platform ($_64bit)");
11445: }
11446: }
11447: }
11448:
11449: 1;
11450: __END__
11451:
11452: =pod
11453:
11454: =head1 NAME
11455:
11456: Apache::lonnet - Subroutines to ask questions about things in the network.
11457:
11458: =head1 SYNOPSIS
11459:
11460: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11461:
11462: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11463:
11464: Common parameters:
11465:
11466: =over 4
11467:
11468: =item *
11469:
11470: $uname : an internal username (if $cname expecting a course Id specifically)
11471:
11472: =item *
11473:
11474: $udom : a domain (if $cdom expecting a course's domain specifically)
11475:
11476: =item *
11477:
11478: $symb : a resource instance identifier
11479:
11480: =item *
11481:
11482: $namespace : the name of a .db file that contains the data needed or
11483: being set.
11484:
11485: =back
11486:
11487: =head1 OVERVIEW
11488:
11489: lonnet provides subroutines which interact with the
11490: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11491: about classes, users, and resources.
11492:
11493: For many of these objects you can also use this to store data about
11494: them or modify them in various ways.
11495:
11496: =head2 Symbs
11497:
11498: To identify a specific instance of a resource, LON-CAPA uses symbols
11499: or "symbs"X<symb>. These identifiers are built from the URL of the
11500: map, the resource number of the resource in the map, and the URL of
11501: the resource itself. The latter is somewhat redundant, but might help
11502: if maps change.
11503:
11504: An example is
11505:
11506: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11507:
11508: The respective map entry is
11509:
11510: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11511: title="Problem 2">
11512: </resource>
11513:
11514: Symbs are used by the random number generator, as well as to store and
11515: restore data specific to a certain instance of for example a problem.
11516:
11517: =head2 Storing And Retrieving Data
11518:
11519: X<store()>X<cstore()>X<restore()>Three of the most important functions
11520: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
11521: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
11522: is is the non-critical message twin of cstore. These functions are for
11523: handlers to store a perl hash to a user's permanent data space in an
11524: easy manner, and to retrieve it again on another call. It is expected
11525: that a handler would use this once at the beginning to retrieve data,
11526: and then again once at the end to send only the new data back.
11527:
11528: The data is stored in the user's data directory on the user's
11529: homeserver under the ID of the course.
11530:
11531: The hash that is returned by restore will have all of the previous
11532: value for all of the elements of the hash.
11533:
11534: Example:
11535:
11536: #creating a hash
11537: my %hash;
11538: $hash{'foo'}='bar';
11539:
11540: #storing it
11541: &Apache::lonnet::cstore(\%hash);
11542:
11543: #changing a value
11544: $hash{'foo'}='notbar';
11545:
11546: #adding a new value
11547: $hash{'bar'}='foo';
11548: &Apache::lonnet::cstore(\%hash);
11549:
11550: #retrieving the hash
11551: my %history=&Apache::lonnet::restore();
11552:
11553: #print the hash
11554: foreach my $key (sort(keys(%history))) {
11555: print("\%history{$key} = $history{$key}");
11556: }
11557:
11558: Will print out:
11559:
11560: %history{1:foo} = bar
11561: %history{1:keys} = foo:timestamp
11562: %history{1:timestamp} = 990455579
11563: %history{2:bar} = foo
11564: %history{2:foo} = notbar
11565: %history{2:keys} = foo:bar:timestamp
11566: %history{2:timestamp} = 990455580
11567: %history{bar} = foo
11568: %history{foo} = notbar
11569: %history{timestamp} = 990455580
11570: %history{version} = 2
11571:
11572: Note that the special hash entries C<keys>, C<version> and
11573: C<timestamp> were added to the hash. C<version> will be equal to the
11574: total number of versions of the data that have been stored. The
11575: C<timestamp> attribute will be the UNIX time the hash was
11576: stored. C<keys> is available in every historical section to list which
11577: keys were added or changed at a specific historical revision of a
11578: hash.
11579:
11580: B<Warning>: do not store the hash that restore returns directly. This
11581: will cause a mess since it will restore the historical keys as if the
11582: were new keys. I.E. 1:foo will become 1:1:foo etc.
11583:
11584: Calling convention:
11585:
11586: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
11587: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
11588:
11589: For more detailed information, see lonnet specific documentation.
11590:
11591: =head1 RETURN MESSAGES
11592:
11593: =over 4
11594:
11595: =item * B<con_lost>: unable to contact remote host
11596:
11597: =item * B<con_delayed>: unable to contact remote host, message will be delivered
11598: when the connection is brought back up
11599:
11600: =item * B<con_failed>: unable to contact remote host and unable to save message
11601: for later delivery
11602:
11603: =item * B<error:>: an error a occurred, a description of the error follows the :
11604:
11605: =item * B<no_such_host>: unable to fund a host associated with the user/domain
11606: that was requested
11607:
11608: =back
11609:
11610: =head1 PUBLIC SUBROUTINES
11611:
11612: =head2 Session Environment Functions
11613:
11614: =over 4
11615:
11616: =item *
11617: X<appenv()>
11618: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
11619: the user envirnoment file, and will be restored for each access this
11620: user makes during this session, also modifies the %env for the current
11621: process. Optional rolesarrayref - if defined contains a reference to an array
11622: of roles which are exempt from the restriction on modifying user.role entries
11623: in the user's environment.db and in %env.
11624:
11625: =item *
11626: X<delenv()>
11627: B<delenv($delthis,$regexp)>: removes all items from the session
11628: environment file that begin with $delthis. If the
11629: optional second arg - $regexp - is true, $delthis is treated as a
11630: regular expression, otherwise \Q$delthis\E is used.
11631: The values are also deleted from the current processes %env.
11632:
11633: =item * get_env_multiple($name)
11634:
11635: gets $name from the %env hash, it seemlessly handles the cases where multiple
11636: values may be defined and end up as an array ref.
11637:
11638: returns an array of values
11639:
11640: =back
11641:
11642: =head2 User Information
11643:
11644: =over 4
11645:
11646: =item *
11647: X<queryauthenticate()>
11648: B<queryauthenticate($uname,$udom)>: try to determine user's current
11649: authentication scheme
11650:
11651: =item *
11652: X<authenticate()>
11653: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
11654: authenticate user from domain's lib servers (first use the current
11655: one). C<$upass> should be the users password.
11656: $checkdefauth is optional (value is 1 if a check should be made to
11657: authenticate user using default authentication method, and allow
11658: account creation if username does not have account in the domain).
11659: $clientcancheckhost is optional (value is 1 if checking whether the
11660: server can host will occur on the client side in lonauth.pm).
11661:
11662: =item *
11663: X<homeserver()>
11664: B<homeserver($uname,$udom)>: find the server which has
11665: the user's directory and files (there must be only one), this caches
11666: the answer, and also caches if there is a borken connection.
11667:
11668: =item *
11669: X<idget()>
11670: B<idget($udom,@ids)>: find the usernames behind a list of IDs
11671: (IDs are a unique resource in a domain, there must be only 1 ID per
11672: username, and only 1 username per ID in a specific domain) (returns
11673: hash: id=>name,id=>name)
11674:
11675: =item *
11676: X<idrget()>
11677: B<idrget($udom,@unames)>: find the IDs behind a list of
11678: usernames (returns hash: name=>id,name=>id)
11679:
11680: =item *
11681: X<idput()>
11682: B<idput($udom,%ids)>: store away a list of names and associated IDs
11683:
11684: =item *
11685: X<rolesinit()>
11686: B<rolesinit($udom,$username,$authhost)>: get user privileges
11687:
11688: =item *
11689: X<getsection()>
11690: B<getsection($udom,$uname,$cname)>: finds the section of student in the
11691: course $cname, return section name/number or '' for "not in course"
11692: and '-1' for "no section"
11693:
11694: =item *
11695: X<userenvironment()>
11696: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
11697: passed in @what from the requested user's environment, returns a hash
11698:
11699: =item *
11700: X<userlog_query()>
11701: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
11702: activity.log file. %filters defines filters applied when parsing the
11703: log file. These can be start or end timestamps, or the type of action
11704: - log to look for Login or Logout events, check for Checkin or
11705: Checkout, role for role selection. The response is in the form
11706: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
11707: escaped strings of the action recorded in the activity.log file.
11708:
11709: =back
11710:
11711: =head2 User Roles
11712:
11713: =over 4
11714:
11715: =item *
11716:
11717: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
11718: F: full access
11719: U,I,K: authentication modes (cxx only)
11720: '': forbidden
11721: 1: user needs to choose course
11722: 2: browse allowed
11723: A: passphrase authentication needed
11724:
11725: =item *
11726:
11727: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
11728: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
11729: and course level
11730:
11731: =item *
11732:
11733: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
11734: (rolesplain.tab); plain text explanation of a user role term.
11735: $type is Course (default) or Community.
11736: If $forcedefault evaluates to true, text returned will be default
11737: text for $type. Otherwise, if this is a course, the text returned
11738: will be a custom name for the role (if defined in the course's
11739: environment). If no custom name is defined the default is returned.
11740:
11741: =item *
11742:
11743: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
11744: All arguments are optional. Returns a hash of a roles, either for
11745: co-author/assistant author roles for a user's Construction Space
11746: (default), or if $context is 'userroles', roles for the user himself,
11747: In the hash, keys are set to colon-separated $uname,$udom,$role, and
11748: (optionally) if $withsec is true, a fourth colon-separated item - $section.
11749: For each key, value is set to colon-separated start and end times for
11750: the role. If no username and domain are specified, will default to
11751: current user/domain. Types, roles, and roledoms are references to arrays
11752: of role statuses (active, future or previous), roles
11753: (e.g., cc,in, st etc.) and domains of the roles which can be used
11754: to restrict the list of roles reported. If no array ref is
11755: provided for types, will default to return only active roles.
11756:
11757: =back
11758:
11759: =head2 User Modification
11760:
11761: =over 4
11762:
11763: =item *
11764:
11765: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
11766: user for the level given by URL. Optional start and end dates (leave empty
11767: string or zero for "no date")
11768:
11769: =item *
11770:
11771: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
11772: change a users, password, possible return values are: ok,
11773: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
11774: refused
11775:
11776: =item *
11777:
11778: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
11779:
11780: =item *
11781:
11782: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
11783: $forceid,$desiredhome,$email,$inststatus,$candelete) :
11784:
11785: will update user information (firstname,middlename,lastname,generation,
11786: permanentemail), and if forceid is true, student/employee ID also.
11787: A user's institutional affiliation(s) can also be updated.
11788: User information fields will not be overwritten with empty entries
11789: unless the field is included in the $candelete array reference.
11790: This array is included when a single user is modified via "Manage Users",
11791: or when Autoupdate.pl is run by cron in a domain.
11792:
11793: =item *
11794:
11795: modifystudent
11796:
11797: modify a student's enrollment and identification information.
11798: The course id is resolved based on the current users environment.
11799: This means the envoking user must be a course coordinator or otherwise
11800: associated with a course.
11801:
11802: This call is essentially a wrapper for lonnet::modifyuser and
11803: lonnet::modify_student_enrollment
11804:
11805: Inputs:
11806:
11807: =over 4
11808:
11809: =item B<$udom> Student's loncapa domain
11810:
11811: =item B<$uname> Student's loncapa login name
11812:
11813: =item B<$uid> Student/Employee ID
11814:
11815: =item B<$umode> Student's authentication mode
11816:
11817: =item B<$upass> Student's password
11818:
11819: =item B<$first> Student's first name
11820:
11821: =item B<$middle> Student's middle name
11822:
11823: =item B<$last> Student's last name
11824:
11825: =item B<$gene> Student's generation
11826:
11827: =item B<$usec> Student's section in course
11828:
11829: =item B<$end> Unix time of the roles expiration
11830:
11831: =item B<$start> Unix time of the roles start date
11832:
11833: =item B<$forceid> If defined, allow $uid to be changed
11834:
11835: =item B<$desiredhome> server to use as home server for student
11836:
11837: =item B<$email> Student's permanent e-mail address
11838:
11839: =item B<$type> Type of enrollment (auto or manual)
11840:
11841: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
11842:
11843: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
11844:
11845: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
11846:
11847: =item B<$context> role change context (shown in User Management Logs display in a course)
11848:
11849: =item B<$inststatus> institutional status of user - : separated string of escaped status types
11850:
11851: =back
11852:
11853: =item *
11854:
11855: modify_student_enrollment
11856:
11857: Change a students enrollment status in a class. The environment variable
11858: 'role.request.course' must be defined for this function to proceed.
11859:
11860: Inputs:
11861:
11862: =over 4
11863:
11864: =item $udom, students domain
11865:
11866: =item $uname, students name
11867:
11868: =item $uid, students user id
11869:
11870: =item $first, students first name
11871:
11872: =item $middle
11873:
11874: =item $last
11875:
11876: =item $gene
11877:
11878: =item $usec
11879:
11880: =item $end
11881:
11882: =item $start
11883:
11884: =item $type
11885:
11886: =item $locktype
11887:
11888: =item $cid
11889:
11890: =item $selfenroll
11891:
11892: =item $context
11893:
11894: =back
11895:
11896:
11897: =item *
11898:
11899: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11900: custom role; give a custom role to a user for the level given by URL. Specify
11901: name and domain of role author, and role name
11902:
11903: =item *
11904:
11905: revokerole($udom,$uname,$url,$role) : revoke a role for url
11906:
11907: =item *
11908:
11909: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
11910:
11911: =back
11912:
11913: =head2 Course Infomation
11914:
11915: =over 4
11916:
11917: =item *
11918:
11919: coursedescription($courseid,$options) : returns a hash of information about the
11920: specified course id, including all environment settings for the
11921: course, the description of the course will be in the hash under the
11922: key 'description'
11923:
11924: $options is an optional parameter that if supplied is a hash reference that controls
11925: what how this function works. It has the following key/values:
11926:
11927: =over 4
11928:
11929: =item freshen_cache
11930:
11931: If defined, and the environment cache for the course is valid, it is
11932: returned in the returned hash.
11933:
11934: =item one_time
11935:
11936: If defined, the last cache time is set to _now_
11937:
11938: =item user
11939:
11940: If defined, the supplied username is used instead of the current user.
11941:
11942:
11943: =back
11944:
11945: =item *
11946:
11947: resdata($name,$domain,$type,@which) : request for current parameter
11948: setting for a specific $type, where $type is either 'course' or 'user',
11949: @what should be a list of parameters to ask about. This routine caches
11950: answers for 5 minutes.
11951:
11952: =item *
11953:
11954: get_courseresdata($courseid, $domain) : dump the entire course resource
11955: data base, returning a hash that is keyed by the resource name and has
11956: values that are the resource value. I believe that the timestamps and
11957: versions are also returned.
11958:
11959:
11960: =back
11961:
11962: =head2 Course Modification
11963:
11964: =over 4
11965:
11966: =item *
11967:
11968: writecoursepref($courseid,%prefs) : write preferences (environment
11969: database) for a course
11970:
11971: =item *
11972:
11973: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11974:
11975: =item *
11976:
11977: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11978:
11979: =back
11980:
11981: =head2 Resource Subroutines
11982:
11983: =over 4
11984:
11985: =item *
11986:
11987: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
11988:
11989: =item *
11990:
11991: repcopy($filename) : subscribes to the requested file, and attempts to
11992: replicate from the owning library server, Might return
11993: 'unavailable', 'not_found', 'forbidden', 'ok', or
11994: 'bad_request', also attempts to grab the metadata for the
11995: resource. Expects the local filesystem pathname
11996: (/home/httpd/html/res/....)
11997:
11998: =back
11999:
12000: =head2 Resource Information
12001:
12002: =over 4
12003:
12004: =item *
12005:
12006: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12007: a vairety of different possible values, $varname should be a request
12008: string, and the other parameters can be used to specify who and what
12009: one is asking about.
12010:
12011: Possible values for $varname are environment.lastname (or other item
12012: from the envirnment hash), user.name (or someother aspect about the
12013: user), resource.0.maxtries (or some other part and parameter of a
12014: resource)
12015:
12016: =item *
12017:
12018: directcondval($number) : get current value of a condition; reads from a state
12019: string
12020:
12021: =item *
12022:
12023: condval($condidx) : value of condition index based on state
12024:
12025: =item *
12026:
12027: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12028: resource's metadata, $what should be either a specific key, or either
12029: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12030: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12031:
12032: this function automatically caches all requests
12033:
12034: =item *
12035:
12036: metadata_query($query,$custom,$customshow) : make a metadata query against the
12037: network of library servers; returns file handle of where SQL and regex results
12038: will be stored for query
12039:
12040: =item *
12041:
12042: symbread($filename) : return symbolic list entry (filename argument optional);
12043: returns the data handle
12044:
12045: =item *
12046:
12047: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
12048: a possible symb for the URL in $thisfn, and if is an encryypted
12049: resource that the user accessed using /enc/ returns a 1 on success, 0
12050: on failure, user must be in a course, as it assumes the existance of
12051: the course initial hash, and uses $env('request.course.id'}
12052:
12053:
12054: =item *
12055:
12056: symbclean($symb) : removes versions numbers from a symb, returns the
12057: cleaned symb
12058:
12059: =item *
12060:
12061: is_on_map($uri) : checks if the $uri is somewhere on the current
12062: course map, user must be in a course for it to work.
12063:
12064: =item *
12065:
12066: numval($salt) : return random seed value (addend for rndseed)
12067:
12068: =item *
12069:
12070: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12071: a random seed, all arguments are optional, if they aren't sent it uses the
12072: environment to derive them. Note: if symb isn't sent and it can't get one
12073: from &symbread it will use the current time as its return value
12074:
12075: =item *
12076:
12077: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12078: unfakeable, receipt
12079:
12080: =item *
12081:
12082: receipt() : API to ireceipt working off of env values; given out to users
12083:
12084: =item *
12085:
12086: countacc($url) : count the number of accesses to a given URL
12087:
12088: =item *
12089:
12090: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12091:
12092: =item *
12093:
12094: checkin($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 $tcrsid)
12095:
12096: =item *
12097:
12098: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12099:
12100: =item *
12101:
12102: devalidate($symb) : devalidate temporary spreadsheet calculations,
12103: forcing spreadsheet to reevaluate the resource scores next time.
12104:
12105: =back
12106:
12107: =head2 Storing/Retreiving Data
12108:
12109: =over 4
12110:
12111: =item *
12112:
12113: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12114: for this url; hashref needs to be given and should be a \%hashname; the
12115: remaining args aren't required and if they aren't passed or are '' they will
12116: be derived from the env
12117:
12118: =item *
12119:
12120: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12121: uses critical subroutine
12122:
12123: =item *
12124:
12125: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12126: all args are optional
12127:
12128: =item *
12129:
12130: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12131: dumps the complete (or key matching regexp) namespace into a hash
12132: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12133: normally &store()ed into
12134:
12135: $range should be either an integer '100' (give me the first 100
12136: matching records)
12137: or be two integers sperated by a - with no spaces
12138: '30-50' (give me the 30th through the 50th matching
12139: records)
12140:
12141:
12142: =item *
12143:
12144: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12145: replaces a &store() version of data with a replacement set of data
12146: for a particular resource in a namespace passed in the $storehash hash
12147: reference
12148:
12149: =item *
12150:
12151: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12152: works very similar to store/cstore, but all data is stored in a
12153: temporary location and can be reset using tmpreset, $storehash should
12154: be a hash reference, returns nothing on success
12155:
12156: =item *
12157:
12158: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12159: similar to restore, but all data is stored in a temporary location and
12160: can be reset using tmpreset. Returns a hash of values on success,
12161: error string otherwise.
12162:
12163: =item *
12164:
12165: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12166: deltes all keys for $symb form the temporary storage hash.
12167:
12168: =item *
12169:
12170: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12171: reference filled in from namesp ($udom and $uname are optional)
12172:
12173: =item *
12174:
12175: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12176: namesp ($udom and $uname are optional)
12177:
12178: =item *
12179:
12180: dump($namespace,$udom,$uname,$regexp,$range) :
12181: dumps the complete (or key matching regexp) namespace into a hash
12182: ($udom, $uname, $regexp, $range are optional)
12183:
12184: $range should be either an integer '100' (give me the first 100
12185: matching records)
12186: or be two integers sperated by a - with no spaces
12187: '30-50' (give me the 30th through the 50th matching
12188: records)
12189: =item *
12190:
12191: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12192: $store can be a scalar, an array reference, or if the amount to be
12193: incremented is > 1, a hash reference.
12194:
12195: ($udom and $uname are optional)
12196:
12197: =item *
12198:
12199: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12200: ($udom and $uname are optional)
12201:
12202: =item *
12203:
12204: cput($namespace,$storehash,$udom,$uname) : critical put
12205: ($udom and $uname are optional)
12206:
12207: =item *
12208:
12209: newput($namespace,$storehash,$udom,$uname) :
12210:
12211: Attempts to store the items in the $storehash, but only if they don't
12212: currently exist, if this succeeds you can be certain that you have
12213: successfully created a new key value pair in the $namespace db.
12214:
12215:
12216: Args:
12217: $namespace: name of database to store values to
12218: $storehash: hashref to store to the db
12219: $udom: (optional) domain of user containing the db
12220: $uname: (optional) name of user caontaining the db
12221:
12222: Returns:
12223: 'ok' -> succeeded in storing all keys of $storehash
12224: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12225: least <key> already existed in the db (other
12226: requested keys may also already exist)
12227: 'error: <msg>' -> unable to tie the DB or other error occurred
12228: 'con_lost' -> unable to contact request server
12229: 'refused' -> action was not allowed by remote machine
12230:
12231:
12232: =item *
12233:
12234: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12235: reference filled in from namesp (encrypts the return communication)
12236: ($udom and $uname are optional)
12237:
12238: =item *
12239:
12240: log($udom,$name,$home,$message) : write to permanent log for user; use
12241: critical subroutine
12242:
12243: =item *
12244:
12245: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12246: array reference filled in from namespace found in domain level on either
12247: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12248:
12249: =item *
12250:
12251: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12252: domain level either on specified domain server ($uhome) or primary domain
12253: server ($udom and $uhome are optional)
12254:
12255: =item *
12256:
12257: get_domain_defaults($target_domain) : returns hash with defaults for
12258: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12259: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12260: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12261: Values are retrieved from cache (if current), or from domain's configuration.db
12262: (if available), or lastly from values in lonTabs/dns_domain,tab,
12263: or lonTabs/domain.tab.
12264:
12265: %domdefaults = &get_auth_defaults($target_domain);
12266:
12267: =back
12268:
12269: =head2 Network Status Functions
12270:
12271: =over 4
12272:
12273: =item *
12274:
12275: dirlist() : return directory list based on URI (first arg).
12276:
12277: Inputs: 1 required, 5 optional.
12278:
12279: =over
12280:
12281: =item
12282: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12283:
12284: =item
12285: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12286:
12287: =item
12288: $username - username of user/course to be listed. Extracted from $uri if absent.
12289:
12290: =item
12291: $getpropath - boolean: 1 if prepend path using &propath().
12292:
12293: =item
12294: $getuserdir - boolean: 1 if prepend path for "userfiles".
12295:
12296: =item
12297: $alternateRoot - path to prepend in place of path from $uri.
12298:
12299: =back
12300:
12301: Returns: Array of up to two items.
12302:
12303: =over
12304:
12305: a reference to an array of files/subdirectories
12306:
12307: =over
12308:
12309: Each element in the array of files/subdirectories is a & separated list of
12310: item name and the result of running stat on the item. If dirlist was requested
12311: for a file instead of a directory, the item name will be ''. For a directory
12312: listing, if the item is a metadata file, the element will end &N&M
12313: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12314: default copyright set (1).
12315:
12316: =back
12317:
12318: a scalar containing error condition (if encountered).
12319:
12320: =over
12321:
12322: =item
12323: no_host (no homeserver identified for $username:$domain).
12324:
12325: =item
12326: no_such_host (server contacted for listing not identified as valid host).
12327:
12328: =item
12329: con_lost (connection to remote server failed).
12330:
12331: =item
12332: refused (invalid $username:$domain received on lond side).
12333:
12334: =item
12335: no_such_dir (directory at specified path on lond side does not exist).
12336:
12337: =item
12338: empty (directory at specified path on lond side is empty).
12339:
12340: =over
12341:
12342: This is currently not encountered because the &ls3, &ls2,
12343: &ls (_handler) routines on the lond side do not filter out
12344: . and .. from a directory listing.
12345:
12346: =back
12347:
12348: =back
12349:
12350: =back
12351:
12352: =item *
12353:
12354: spareserver() : find server with least workload from spare.tab
12355:
12356:
12357: =item *
12358:
12359: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12360: if there is no corresponding loncapa host.
12361:
12362: =back
12363:
12364:
12365: =head2 Apache Request
12366:
12367: =over 4
12368:
12369: =item *
12370:
12371: ssi($url,%hash) : server side include, does a complete request cycle on url to
12372: localhost, posts hash
12373:
12374: =back
12375:
12376: =head2 Data to String to Data
12377:
12378: =over 4
12379:
12380: =item *
12381:
12382: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12383: and '&' separators, supports elements that are arrayrefs and hashrefs
12384:
12385: =item *
12386:
12387: hashref2str($hashref) : convert a hashref into a string complete with
12388: escaping and '=' and '&' separators, supports elements that are
12389: arrayrefs and hashrefs
12390:
12391: =item *
12392:
12393: arrayref2str($arrayref) : convert an arrayref into a string complete
12394: with escaping and '&' separators, supports elements that are arrayrefs
12395: and hashrefs
12396:
12397: =item *
12398:
12399: str2hash($string) : convert string to hash using unescaping and
12400: splitting on '=' and '&', supports elements that are arrayrefs and
12401: hashrefs
12402:
12403: =item *
12404:
12405: str2array($string) : convert string to hash using unescaping and
12406: splitting on '&', supports elements that are arrayrefs and hashrefs
12407:
12408: =back
12409:
12410: =head2 Logging Routines
12411:
12412:
12413: These routines allow one to make log messages in the lonnet.log and
12414: lonnet.perm logfiles.
12415:
12416: =over 4
12417:
12418: =item *
12419:
12420: logtouch() : make sure the logfile, lonnet.log, exists
12421:
12422: =item *
12423:
12424: logthis() : append message to the normal lonnet.log file, it gets
12425: preiodically rolled over and deleted.
12426:
12427: =item *
12428:
12429: logperm() : append a permanent message to lonnet.perm.log, this log
12430: file never gets deleted by any automated portion of the system, only
12431: messages of critical importance should go in here.
12432:
12433:
12434: =back
12435:
12436: =head2 General File Helper Routines
12437:
12438: =over 4
12439:
12440: =item *
12441:
12442: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
12443: (a) files in /uploaded
12444: (i) If a local copy of the file exists -
12445: compares modification date of local copy with last-modified date for
12446: definitive version stored on home server for course. If local copy is
12447: stale, requests a new version from the home server and stores it.
12448: If the original has been removed from the home server, then local copy
12449: is unlinked.
12450: (ii) If local copy does not exist -
12451: requests the file from the home server and stores it.
12452:
12453: If $caller is 'uploadrep':
12454: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
12455: for request for files originally uploaded via DOCS.
12456: - returns 'ok' if fresh local copy now available, -1 otherwise.
12457:
12458: Otherwise:
12459: This indicates a call from the content generation phase of the request.
12460: - returns the entire contents of the file or -1.
12461:
12462: (b) files in /res
12463: - returns the entire contents of a file or -1;
12464: it properly subscribes to and replicates the file if neccessary.
12465:
12466:
12467: =item *
12468:
12469: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
12470: reference
12471:
12472: returns either a stat() list of data about the file or an empty list
12473: if the file doesn't exist or couldn't find out about it (connection
12474: problems or user unknown)
12475:
12476: =item *
12477:
12478: filelocation($dir,$file) : returns file system location of a file
12479: based on URI; meant to be "fairly clean" absolute reference, $dir is a
12480: directory that relative $file lookups are to looked in ($dir of /a/dir
12481: and a file of ../bob will become /a/bob)
12482:
12483: =item *
12484:
12485: hreflocation($dir,$file) : returns file system location or a URL; same as
12486: filelocation except for hrefs
12487:
12488: =item *
12489:
12490: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
12491:
12492: =back
12493:
12494: =head2 Usererfile file routines (/uploaded*)
12495:
12496: =over 4
12497:
12498: =item *
12499:
12500: userfileupload(): main rotine for putting a file in a user or course's
12501: filespace, arguments are,
12502:
12503: formname - required - this is the name of the element in $env where the
12504: filename, and the contents of the file to create/modifed exist
12505: the filename is in $env{'form.'.$formname.'.filename'} and the
12506: contents of the file is located in $env{'form.'.$formname}
12507: context - if coursedoc, store the file in the course of the active role
12508: of the current user;
12509: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
12510: if 'canceloverwrite': delete file in tmp/overwrites directory
12511: subdir - required - subdirectory to put the file in under ../userfiles/
12512: if undefined, it will be placed in "unknown"
12513:
12514: (This routine calls clean_filename() to remove any dangerous
12515: characters from the filename, and then calls finuserfileupload() to
12516: complete the transaction)
12517:
12518: returns either the url of the uploaded file (/uploaded/....) if successful
12519: and /adm/notfound.html if unsuccessful
12520:
12521: =item *
12522:
12523: clean_filename(): routine for cleaing a filename up for storage in
12524: userfile space, argument is:
12525:
12526: filename - proposed filename
12527:
12528: returns: the new clean filename
12529:
12530: =item *
12531:
12532: finishuserfileupload(): routine that creates and sends the file to
12533: userspace, probably shouldn't be called directly
12534:
12535: docuname: username or courseid of destination for the file
12536: docudom: domain of user/course of destination for the file
12537: formname: same as for userfileupload()
12538: fname: filename (including subdirectories) for the file
12539: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
12540: allfiles: reference to hash used to store objects found by parser
12541: codebase: reference to hash used for codebases of java objects found by parser
12542: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
12543: thumbheight: height (pixels) of thumbnail to be created for uploaded image
12544: resizewidth: width to be used to resize image using resizeImage from ImageMagick
12545: resizeheight: height to be used to resize image using resizeImage from ImageMagick
12546: context: if 'overwrite', will move the uploaded file from its temporary location to
12547: userfiles to facilitate overwriting a previously uploaded file with same name.
12548: mimetype: reference to scalar to accommodate mime type determined
12549: from File::MMagic if $parser = parse.
12550:
12551: returns either the url of the uploaded file (/uploaded/....) if successful
12552: and /adm/notfound.html if unsuccessful (or an error message if context
12553: was 'overwrite').
12554:
12555:
12556: =item *
12557:
12558: renameuserfile(): renames an existing userfile to a new name
12559:
12560: Args:
12561: docuname: username or courseid of destination for the file
12562: docudom: domain of user/course of destination for the file
12563: old: current file name (including any subdirs under userfiles)
12564: new: desired file name (including any subdirs under userfiles)
12565:
12566: =item *
12567:
12568: mkdiruserfile(): creates a directory is a userfiles dir
12569:
12570: Args:
12571: docuname: username or courseid of destination for the file
12572: docudom: domain of user/course of destination for the file
12573: dir: dir to create (including any subdirs under userfiles)
12574:
12575: =item *
12576:
12577: removeuserfile(): removes a file that exists in userfiles
12578:
12579: Args:
12580: docuname: username or courseid of destination for the file
12581: docudom: domain of user/course of destination for the file
12582: fname: filname to delete (including any subdirs under userfiles)
12583:
12584: =item *
12585:
12586: removeuploadedurl(): convience function for removeuserfile()
12587:
12588: Args:
12589: url: a full /uploaded/... url to delete
12590:
12591: =item *
12592:
12593: get_portfile_permissions():
12594: Args:
12595: domain: domain of user or course contain the portfolio files
12596: user: name of user or num of course contain the portfolio files
12597: Returns:
12598: hashref of a dump of the proper file_permissions.db
12599:
12600:
12601: =item *
12602:
12603: get_access_controls():
12604:
12605: Args:
12606: current_permissions: the hash ref returned from get_portfile_permissions()
12607: group: (optional) the group you want the files associated with
12608: file: (optional) the file you want access info on
12609:
12610: Returns:
12611: a hash (keys are file names) of hashes containing
12612: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
12613: values are XML containing access control settings (see below)
12614:
12615: Internal notes:
12616:
12617: access controls are stored in file_permissions.db as key=value pairs.
12618: key -> path to file/file_name\0uniqueID:scope_end_start
12619: where scope -> public,guest,course,group,domains or users.
12620: end -> UNIX time for end of access (0 -> no end date)
12621: start -> UNIX time for start of access
12622:
12623: value -> XML description of access control
12624: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
12625: <start></start>
12626: <end></end>
12627:
12628: <password></password> for scope type = guest
12629:
12630: <domain></domain> for scope type = course or group
12631: <number></number>
12632: <roles id="">
12633: <role></role>
12634: <access></access>
12635: <section></section>
12636: <group></group>
12637: </roles>
12638:
12639: <dom></dom> for scope type = domains
12640:
12641: <users> for scope type = users
12642: <user>
12643: <uname></uname>
12644: <udom></udom>
12645: </user>
12646: </users>
12647: </scope>
12648:
12649: Access data is also aggregated for each file in an additional key=value pair:
12650: key -> path to file/file_name\0accesscontrol
12651: value -> reference to hash
12652: hash contains key = value pairs
12653: where key = uniqueID:scope_end_start
12654: value = UNIX time record was last updated
12655:
12656: Used to improve speed of look-ups of access controls for each file.
12657:
12658: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
12659:
12660: modify_access_controls():
12661:
12662: Modifies access controls for a portfolio file
12663: Args
12664: 1. file name
12665: 2. reference to hash of required changes,
12666: 3. domain
12667: 4. username
12668: where domain,username are the domain of the portfolio owner
12669: (either a user or a course)
12670:
12671: Returns:
12672: 1. result of additions or updates ('ok' or 'error', with error message).
12673: 2. result of deletions ('ok' or 'error', with error message).
12674: 3. reference to hash of any new or updated access controls.
12675: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
12676: key = integer (inbound ID)
12677: value = uniqueID
12678:
12679: =back
12680:
12681: =head2 HTTP Helper Routines
12682:
12683: =over 4
12684:
12685: =item *
12686:
12687: escape() : unpack non-word characters into CGI-compatible hex codes
12688:
12689: =item *
12690:
12691: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
12692:
12693: =back
12694:
12695: =head1 PRIVATE SUBROUTINES
12696:
12697: =head2 Underlying communication routines (Shouldn't call)
12698:
12699: =over 4
12700:
12701: =item *
12702:
12703: subreply() : tries to pass a message to lonc, returns con_lost if incapable
12704:
12705: =item *
12706:
12707: reply() : uses subreply to send a message to remote machine, logs all failures
12708:
12709: =item *
12710:
12711: critical() : passes a critical message to another server; if cannot
12712: get through then place message in connection buffer directory and
12713: returns con_delayed, if incapable of saving message, returns
12714: con_failed
12715:
12716: =item *
12717:
12718: reconlonc() : tries to reconnect lonc client processes.
12719:
12720: =back
12721:
12722: =head2 Resource Access Logging
12723:
12724: =over 4
12725:
12726: =item *
12727:
12728: flushcourselogs() : flush (save) buffer logs and access logs
12729:
12730: =item *
12731:
12732: courselog($what) : save message for course in hash
12733:
12734: =item *
12735:
12736: courseacclog($what) : save message for course using &courselog(). Perform
12737: special processing for specific resource types (problems, exams, quizzes, etc).
12738:
12739: =item *
12740:
12741: goodbye() : flush course logs and log shutting down; it is called in srm.conf
12742: as a PerlChildExitHandler
12743:
12744: =back
12745:
12746: =head2 Other
12747:
12748: =over 4
12749:
12750: =item *
12751:
12752: symblist($mapname,%newhash) : update symbolic storage links
12753:
12754: =back
12755:
12756: =cut
12757:
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