File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.1348:
download - view:
text,
annotated -
select for diffs
Tue Aug 8 15:33:13 2017 UTC (6 years, 11 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- Trust settings.
- Use more versatile lonnet::will_trust() to determine if session-hosting
server has catalalog access, according to domain's trust settings.
- Eliminate lonnet::notcallable() -- no longer used.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1348 2017/08/08 15:33:13 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 HTTP::Date;
75: use Image::Magick;
76:
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use LONCAPA qw(:DEFAULT :match);
100: use LONCAPA::Configuration;
101: use LONCAPA::lonmetadata;
102: use LONCAPA::Lond;
103: use LONCAPA::LWPReq;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 20; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_servercerts_info {
233: my ($lonhost,$context) = @_;
234: my ($rep,$uselocal);
235: if (grep { $_ eq $lonhost } ¤t_machine_ids()) {
236: $uselocal = 1;
237: }
238: if (($context ne 'cgi') && ($uselocal)) {
239: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
240: if ($distro eq '') {
241: $uselocal = 0;
242: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
243: if ($1 < 6) {
244: $uselocal = 0;
245: }
246: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
247: if ($1 < 12) {
248: $uselocal = 0;
249: }
250: }
251: }
252: if ($uselocal) {
253: $rep = LONCAPA::Lond::server_certs(\%perlvar);
254: } else {
255: $rep=&reply('servercerts',$lonhost);
256: }
257: my ($result,%returnhash);
258: if (defined($lonhost)) {
259: if (!defined(&hostname($lonhost))) {
260: return;
261: }
262: }
263: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
264: ($rep eq 'unknown_cmd')) {
265: $result = $rep;
266: } else {
267: $result = 'ok';
268: my @pairs=split(/\&/,$rep);
269: foreach my $item (@pairs) {
270: my ($key,$value)=split(/=/,$item,2);
271: my $what = &unescape($key);
272: $returnhash{$what}=&thaw_unescape($value);
273: }
274: }
275: return ($result,\%returnhash);
276: }
277:
278: sub get_server_loncaparev {
279: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
280: if (defined($lonhost)) {
281: if (!defined(&hostname($lonhost))) {
282: undef($lonhost);
283: }
284: }
285: if (!defined($lonhost)) {
286: if (defined(&domain($dom,'primary'))) {
287: $lonhost=&domain($dom,'primary');
288: if ($lonhost eq 'no_host') {
289: undef($lonhost);
290: }
291: }
292: }
293: if (defined($lonhost)) {
294: my $cachetime = 12*3600;
295: if (!$ignore_cache) {
296: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
297: if (defined($cached)) {
298: return $loncaparev;
299: }
300: }
301: my ($answer,$loncaparev);
302: my @ids=¤t_machine_ids();
303: if (grep(/^\Q$lonhost\E$/,@ids)) {
304: $answer = $perlvar{'lonVersion'};
305: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
306: $loncaparev = $1;
307: }
308: } else {
309: $answer = &reply('serverloncaparev',$lonhost);
310: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
311: if ($caller eq 'loncron') {
312: my $protocol = $protocol{$lonhost};
313: $protocol = 'http' if ($protocol ne 'https');
314: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
315: my $request=new HTTP::Request('GET',$url);
316: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
317: unless ($response->is_error()) {
318: my $content = $response->content;
319: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
320: $loncaparev = $1;
321: }
322: }
323: } else {
324: $loncaparev = $loncaparevs{$lonhost};
325: }
326: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
327: $loncaparev = $1;
328: }
329: }
330: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
331: }
332: }
333:
334: sub get_server_homeID {
335: my ($hostname,$ignore_cache,$caller) = @_;
336: unless ($ignore_cache) {
337: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
338: if (defined($cached)) {
339: return $serverhomeID;
340: }
341: }
342: my $cachetime = 12*3600;
343: my $serverhomeID;
344: if ($caller eq 'loncron') {
345: my @machine_ids = &machine_ids($hostname);
346: foreach my $id (@machine_ids) {
347: my $response = &reply('serverhomeID',$id);
348: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
349: $serverhomeID = $response;
350: last;
351: }
352: }
353: if ($serverhomeID eq '') {
354: $serverhomeID = $machine_ids[-1];
355: }
356: } else {
357: $serverhomeID = $serverhomeIDs{$hostname};
358: }
359: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
360: }
361:
362: sub get_remote_globals {
363: my ($lonhost,$whathash,$ignore_cache) = @_;
364: my ($result,%returnhash,%whatneeded);
365: if (ref($whathash) eq 'HASH') {
366: foreach my $what (sort(keys(%{$whathash}))) {
367: my $hashid = $lonhost.'-'.$what;
368: my ($response,$cached);
369: unless ($ignore_cache) {
370: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
371: }
372: if (defined($cached)) {
373: $returnhash{$what} = $response;
374: } else {
375: $whatneeded{$what} = 1;
376: }
377: }
378: if (keys(%whatneeded) == 0) {
379: $result = 'ok';
380: } else {
381: my $requested = &freeze_escape(\%whatneeded);
382: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
383: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
384: ($rep eq 'unknown_cmd')) {
385: $result = $rep;
386: } else {
387: $result = 'ok';
388: my @pairs=split(/\&/,$rep);
389: foreach my $item (@pairs) {
390: my ($key,$value)=split(/=/,$item,2);
391: my $what = &unescape($key);
392: my $hashid = $lonhost.'-'.$what;
393: $returnhash{$what}=&thaw_unescape($value);
394: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
395: }
396: }
397: }
398: }
399: return ($result,\%returnhash);
400: }
401:
402: sub remote_devalidate_cache {
403: my ($lonhost,$cachekeys) = @_;
404: my $items;
405: return unless (ref($cachekeys) eq 'ARRAY');
406: my $cachestr = join('&',@{$cachekeys});
407: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
408: return $response;
409: }
410:
411: # -------------------------------------------------- Non-critical communication
412: sub subreply {
413: my ($cmd,$server)=@_;
414: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
415: #
416: # With loncnew process trimming, there's a timing hole between lonc server
417: # process exit and the master server picking up the listen on the AF_UNIX
418: # socket. In that time interval, a lock file will exist:
419:
420: my $lockfile=$peerfile.".lock";
421: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
422: sleep(0.1);
423: }
424: # At this point, either a loncnew parent is listening or an old lonc
425: # or loncnew child is listening so we can connect or everything's dead.
426: #
427: # We'll give the connection a few tries before abandoning it. If
428: # connection is not possible, we'll con_lost back to the client.
429: #
430: my $client;
431: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
432: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
433: Type => SOCK_STREAM,
434: Timeout => 10);
435: if ($client) {
436: last; # Connected!
437: } else {
438: &create_connection(&hostname($server),$server);
439: }
440: sleep(0.1); # Try again later if failed connection.
441: }
442: my $answer;
443: if ($client) {
444: print $client "sethost:$server:$cmd\n";
445: $answer=<$client>;
446: if (!$answer) { $answer="con_lost"; }
447: chomp($answer);
448: } else {
449: $answer = 'con_lost'; # Failed connection.
450: }
451: return $answer;
452: }
453:
454: sub reply {
455: my ($cmd,$server)=@_;
456: unless (defined(&hostname($server))) { return 'no_such_host'; }
457: my $answer=subreply($cmd,$server);
458: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
459: &logthis("<font color=\"blue\">WARNING:".
460: " $cmd to $server returned $answer</font>");
461: }
462: return $answer;
463: }
464:
465: # ----------------------------------------------------------- Send USR1 to lonc
466:
467: sub reconlonc {
468: my ($lonid) = @_;
469: if ($lonid) {
470: my $hostname = &hostname($lonid);
471: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
472: if ($hostname && -e $peerfile) {
473: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
474: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
475: Type => SOCK_STREAM,
476: Timeout => 10);
477: if ($client) {
478: print $client ("reset_retries\n");
479: my $answer=<$client>;
480: #reset just this one.
481: }
482: }
483: return;
484: }
485:
486: &logthis("Trying to reconnect lonc");
487: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
488: if (open(my $fh,"<$loncfile")) {
489: my $loncpid=<$fh>;
490: chomp($loncpid);
491: if (kill 0 => $loncpid) {
492: &logthis("lonc at pid $loncpid responding, sending USR1");
493: kill USR1 => $loncpid;
494: sleep 1;
495: } else {
496: &logthis(
497: "<font color=\"blue\">WARNING:".
498: " lonc at pid $loncpid not responding, giving up</font>");
499: }
500: } else {
501: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
502: }
503: }
504:
505: # ------------------------------------------------------ Critical communication
506:
507: sub critical {
508: my ($cmd,$server)=@_;
509: unless (&hostname($server)) {
510: &logthis("<font color=\"blue\">WARNING:".
511: " Critical message to unknown server ($server)</font>");
512: return 'no_such_host';
513: }
514: my $answer=reply($cmd,$server);
515: if ($answer eq 'con_lost') {
516: &reconlonc($server);
517: my $answer=reply($cmd,$server);
518: if ($answer eq 'con_lost') {
519: my $now=time;
520: my $middlename=$cmd;
521: $middlename=substr($middlename,0,16);
522: $middlename=~s/\W//g;
523: my $dfilename=
524: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
525: $dumpcount++;
526: {
527: my $dfh;
528: if (open($dfh,">$dfilename")) {
529: print $dfh "$cmd\n";
530: close($dfh);
531: }
532: }
533: sleep 1;
534: my $wcmd='';
535: {
536: my $dfh;
537: if (open($dfh,"<$dfilename")) {
538: $wcmd=<$dfh>;
539: close($dfh);
540: }
541: }
542: chomp($wcmd);
543: if ($wcmd eq $cmd) {
544: &logthis("<font color=\"blue\">WARNING: ".
545: "Connection buffer $dfilename: $cmd</font>");
546: &logperm("D:$server:$cmd");
547: return 'con_delayed';
548: } else {
549: &logthis("<font color=\"red\">CRITICAL:"
550: ." Critical connection failed: $server $cmd</font>");
551: &logperm("F:$server:$cmd");
552: return 'con_failed';
553: }
554: }
555: }
556: return $answer;
557: }
558:
559: # ------------------------------------------- check if return value is an error
560:
561: sub error {
562: my ($result) = @_;
563: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
564: if ($2 == 2) { return undef; }
565: return $1;
566: }
567: return undef;
568: }
569:
570: sub convert_and_load_session_env {
571: my ($lonidsdir,$handle)=@_;
572: my @profile;
573: {
574: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
575: if (!$opened) {
576: return 0;
577: }
578: flock($idf,LOCK_SH);
579: @profile=<$idf>;
580: close($idf);
581: }
582: my %temp_env;
583: foreach my $line (@profile) {
584: if ($line !~ m/=/) {
585: return 0;
586: }
587: chomp($line);
588: my ($envname,$envvalue)=split(/=/,$line,2);
589: $temp_env{&unescape($envname)} = &unescape($envvalue);
590: }
591: unlink("$lonidsdir/$handle.id");
592: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
593: 0640)) {
594: %disk_env = %temp_env;
595: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
596: untie(%disk_env);
597: }
598: return 1;
599: }
600:
601: # ------------------------------------------- Transfer profile into environment
602: my $env_loaded;
603: sub transfer_profile_to_env {
604: my ($lonidsdir,$handle,$force_transfer) = @_;
605: if (!$force_transfer && $env_loaded) { return; }
606:
607: if (!defined($lonidsdir)) {
608: $lonidsdir = $perlvar{'lonIDsDir'};
609: }
610: if (!defined($handle)) {
611: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
612: }
613:
614: my $convert;
615: {
616: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
617: if (!$opened) {
618: return;
619: }
620: flock($idf,LOCK_SH);
621: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
622: &GDBM_READER(),0640)) {
623: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
624: untie(%disk_env);
625: } else {
626: $convert = 1;
627: }
628: }
629: if ($convert) {
630: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
631: &logthis("Failed to load session, or convert session.");
632: }
633: }
634:
635: my %remove;
636: while ( my $envname = each(%env) ) {
637: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
638: if ($time < time-300) {
639: $remove{$key}++;
640: }
641: }
642: }
643:
644: $env{'user.environment'} = "$lonidsdir/$handle.id";
645: $env_loaded=1;
646: foreach my $expired_key (keys(%remove)) {
647: &delenv($expired_key);
648: }
649: }
650:
651: # ---------------------------------------------------- Check for valid session
652: sub check_for_valid_session {
653: my ($r,$name,$userhashref) = @_;
654: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
655: my ($linkname,$pubname);
656: if ($name eq '') {
657: $name = 'lonID';
658: $linkname = 'lonLinkID';
659: $pubname = 'lonPubID';
660: }
661: my $lonid=$cookies{$name};
662: if (!$lonid) {
663: if (($name eq 'lonID') && ($ENV{'SERVER_PORT'} != 443) && ($linkname)) {
664: $lonid=$cookies{$linkname};
665: }
666: if (!$lonid) {
667: if (($name eq 'lonID') && ($pubname)) {
668: $lonid=$cookies{$pubname};
669: }
670: }
671: }
672: return undef if (!$lonid);
673:
674: my $handle=&LONCAPA::clean_handle($lonid->value);
675: my $lonidsdir;
676: if ($name eq 'lonDAV') {
677: $lonidsdir=$r->dir_config('lonDAVsessDir');
678: } else {
679: $lonidsdir=$r->dir_config('lonIDsDir');
680: }
681: return undef if (!-e "$lonidsdir/$handle.id");
682:
683: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
684: return undef if (!$opened);
685:
686: flock($idf,LOCK_SH);
687: my %disk_env;
688: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
689: &GDBM_READER(),0640)) {
690: return undef;
691: }
692:
693: if (!defined($disk_env{'user.name'})
694: || !defined($disk_env{'user.domain'})) {
695: return undef;
696: }
697:
698: if (ref($userhashref) eq 'HASH') {
699: $userhashref->{'name'} = $disk_env{'user.name'};
700: $userhashref->{'domain'} = $disk_env{'user.domain'};
701: }
702:
703: return $handle;
704: }
705:
706: sub timed_flock {
707: my ($file,$lock_type) = @_;
708: my $failed=0;
709: eval {
710: local $SIG{__DIE__}='DEFAULT';
711: local $SIG{ALRM}=sub {
712: $failed=1;
713: die("failed lock");
714: };
715: alarm(13);
716: flock($file,$lock_type);
717: alarm(0);
718: };
719: if ($failed) {
720: return undef;
721: } else {
722: return 1;
723: }
724: }
725:
726: # ---------------------------------------------------------- Append Environment
727:
728: sub appenv {
729: my ($newenv,$roles) = @_;
730: if (ref($newenv) eq 'HASH') {
731: foreach my $key (keys(%{$newenv})) {
732: my $refused = 0;
733: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
734: $refused = 1;
735: if (ref($roles) eq 'ARRAY') {
736: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
737: if (grep(/^\Q$role\E$/,@{$roles})) {
738: $refused = 0;
739: }
740: }
741: }
742: if ($refused) {
743: &logthis("<font color=\"blue\">WARNING: ".
744: "Attempt to modify environment ".$key." to ".$newenv->{$key}
745: .'</font>');
746: delete($newenv->{$key});
747: } else {
748: $env{$key}=$newenv->{$key};
749: }
750: }
751: my $opened = open(my $env_file,'+<',$env{'user.environment'});
752: if ($opened
753: && &timed_flock($env_file,LOCK_EX)
754: &&
755: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
756: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
757: while (my ($key,$value) = each(%{$newenv})) {
758: $disk_env{$key} = $value;
759: }
760: untie(%disk_env);
761: }
762: }
763: return 'ok';
764: }
765: # ----------------------------------------------------- Delete from Environment
766:
767: sub delenv {
768: my ($delthis,$regexp,$roles) = @_;
769: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
770: my $refused = 1;
771: if (ref($roles) eq 'ARRAY') {
772: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
773: if (grep(/^\Q$role\E$/,@{$roles})) {
774: $refused = 0;
775: }
776: }
777: if ($refused) {
778: &logthis("<font color=\"blue\">WARNING: ".
779: "Attempt to delete from environment ".$delthis);
780: return 'error';
781: }
782: }
783: my $opened = open(my $env_file,'+<',$env{'user.environment'});
784: if ($opened
785: && &timed_flock($env_file,LOCK_EX)
786: &&
787: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
788: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
789: foreach my $key (keys(%disk_env)) {
790: if ($regexp) {
791: if ($key=~/^$delthis/) {
792: delete($env{$key});
793: delete($disk_env{$key});
794: }
795: } else {
796: if ($key=~/^\Q$delthis\E/) {
797: delete($env{$key});
798: delete($disk_env{$key});
799: }
800: }
801: }
802: untie(%disk_env);
803: }
804: return 'ok';
805: }
806:
807: sub get_env_multiple {
808: my ($name) = @_;
809: my @values;
810: if (defined($env{$name})) {
811: # exists is it an array
812: if (ref($env{$name})) {
813: @values=@{ $env{$name} };
814: } else {
815: $values[0]=$env{$name};
816: }
817: }
818: return(@values);
819: }
820:
821: # ------------------------------------------------------------------- Locking
822:
823: sub set_lock {
824: my ($text)=@_;
825: $locknum++;
826: my $id=$$.'-'.$locknum;
827: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
828: 'session.lock.'.$id => $text});
829: return $id;
830: }
831:
832: sub get_locks {
833: my $num=0;
834: my %texts=();
835: foreach my $lock (split(/\,/,$env{'session.locks'})) {
836: if ($lock=~/\w/) {
837: $num++;
838: $texts{$lock}=$env{'session.lock.'.$lock};
839: }
840: }
841: return ($num,%texts);
842: }
843:
844: sub remove_lock {
845: my ($id)=@_;
846: my $newlocks='';
847: foreach my $lock (split(/\,/,$env{'session.locks'})) {
848: if (($lock=~/\w/) && ($lock ne $id)) {
849: $newlocks.=','.$lock;
850: }
851: }
852: &appenv({'session.locks' => $newlocks});
853: &delenv('session.lock.'.$id);
854: }
855:
856: sub remove_all_locks {
857: my $activelocks=$env{'session.locks'};
858: foreach my $lock (split(/\,/,$env{'session.locks'})) {
859: if ($lock=~/\w/) {
860: &remove_lock($lock);
861: }
862: }
863: }
864:
865:
866: # ------------------------------------------ Find out current server userload
867: sub userload {
868: my $numusers=0;
869: {
870: opendir(LONIDS,$perlvar{'lonIDsDir'});
871: my $filename;
872: my $curtime=time;
873: while ($filename=readdir(LONIDS)) {
874: next if ($filename eq '.' || $filename eq '..');
875: next if ($filename =~ /publicuser_\d+\.id/);
876: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
877: if ($curtime-$mtime < 1800) { $numusers++; }
878: }
879: closedir(LONIDS);
880: }
881: my $userloadpercent=0;
882: my $maxuserload=$perlvar{'lonUserLoadLim'};
883: if ($maxuserload) {
884: $userloadpercent=100*$numusers/$maxuserload;
885: }
886: $userloadpercent=sprintf("%.2f",$userloadpercent);
887: return $userloadpercent;
888: }
889:
890: # ------------------------------ Find server with least workload from spare.tab
891:
892: sub spareserver {
893: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
894: my $spare_server;
895: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
896: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
897: : $userloadpercent;
898: my ($uint_dom,$remotesessions);
899: if (($udom ne '') && (&domain($udom) ne '')) {
900: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
901: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
902: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
903: $remotesessions = $udomdefaults{'remotesessions'};
904: }
905: my $spareshash = &this_host_spares($udom);
906: if (ref($spareshash) eq 'HASH') {
907: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
908: foreach my $try_server (@{ $spareshash->{'primary'} }) {
909: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
910: $try_server));
911: ($spare_server, $lowest_load) =
912: &compare_server_load($try_server, $spare_server, $lowest_load);
913: }
914: }
915:
916: my $found_server = ($spare_server ne '' && $lowest_load < 100);
917:
918: if (!$found_server) {
919: if (ref($spareshash->{'default'}) eq 'ARRAY') {
920: foreach my $try_server (@{ $spareshash->{'default'} }) {
921: next unless (&spare_can_host($udom,$uint_dom,
922: $remotesessions,$try_server));
923: ($spare_server, $lowest_load) =
924: &compare_server_load($try_server, $spare_server, $lowest_load);
925: }
926: }
927: }
928: }
929:
930: if (!$want_server_name) {
931: my $protocol = 'http';
932: if ($protocol{$spare_server} eq 'https') {
933: $protocol = $protocol{$spare_server};
934: }
935: if (defined($spare_server)) {
936: my $hostname = &hostname($spare_server);
937: if (defined($hostname)) {
938: $spare_server = $protocol.'://'.$hostname;
939: }
940: }
941: }
942: return $spare_server;
943: }
944:
945: sub compare_server_load {
946: my ($try_server, $spare_server, $lowest_load, $required) = @_;
947:
948: if ($required) {
949: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
950: my $remoterev = &get_server_loncaparev(undef,$try_server);
951: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
952: if (($major eq '' && $minor eq '') ||
953: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
954: return ($spare_server,$lowest_load);
955: }
956: }
957:
958: my $loadans = &reply('load', $try_server);
959: my $userloadans = &reply('userload',$try_server);
960:
961: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
962: return ($spare_server, $lowest_load); #didn't get a number from the server
963: }
964:
965: my $load;
966: if ($loadans =~ /\d/) {
967: if ($userloadans =~ /\d/) {
968: #both are numbers, pick the bigger one
969: $load = ($loadans > $userloadans) ? $loadans
970: : $userloadans;
971: } else {
972: $load = $loadans;
973: }
974: } else {
975: $load = $userloadans;
976: }
977:
978: if (($load =~ /\d/) && ($load < $lowest_load)) {
979: $spare_server = $try_server;
980: $lowest_load = $load;
981: }
982: return ($spare_server,$lowest_load);
983: }
984:
985: # --------------------------- ask offload servers if user already has a session
986: sub find_existing_session {
987: my ($udom,$uname) = @_;
988: my $spareshash = &this_host_spares($udom);
989: if (ref($spareshash) eq 'HASH') {
990: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
991: foreach my $try_server (@{ $spareshash->{'primary'} }) {
992: return $try_server if (&has_user_session($try_server, $udom, $uname));
993: }
994: }
995: if (ref($spareshash->{'default'}) eq 'ARRAY') {
996: foreach my $try_server (@{ $spareshash->{'default'} }) {
997: return $try_server if (&has_user_session($try_server, $udom, $uname));
998: }
999: }
1000: }
1001: return;
1002: }
1003:
1004: # -------------------------------- ask if server already has a session for user
1005: sub has_user_session {
1006: my ($lonid,$udom,$uname) = @_;
1007: my $result = &reply(join(':','userhassession',
1008: map {&escape($_)} ($udom,$uname)),$lonid);
1009: return 1 if ($result eq 'ok');
1010:
1011: return 0;
1012: }
1013:
1014: # --------- determine least loaded server in a user's domain which allows login
1015:
1016: sub choose_server {
1017: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1018: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1019: my %servers = &get_servers($udom);
1020: my $lowest_load = 30000;
1021: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1022: if ($skiploadbal) {
1023: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1024: unless (defined($cached)) {
1025: my $cachetime = 60*60*24;
1026: my %domconfig =
1027: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1028: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1029: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1030: $cachetime);
1031: }
1032: }
1033: }
1034: foreach my $lonhost (keys(%servers)) {
1035: if ($skiploadbal) {
1036: if (ref($balancers) eq 'HASH') {
1037: next if (exists($balancers->{$lonhost}));
1038: }
1039: }
1040: my $loginvia;
1041: if ($checkloginvia) {
1042: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1043: if ($loginvia) {
1044: my ($server,$path) = split(/:/,$loginvia);
1045: ($login_host, $lowest_load) =
1046: &compare_server_load($server, $login_host, $lowest_load, $required);
1047: if ($login_host eq $server) {
1048: $portal_path = $path;
1049: $isredirect = 1;
1050: }
1051: } else {
1052: ($login_host, $lowest_load) =
1053: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1054: if ($login_host eq $lonhost) {
1055: $portal_path = '';
1056: $isredirect = '';
1057: }
1058: }
1059: } else {
1060: ($login_host, $lowest_load) =
1061: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1062: }
1063: }
1064: if ($login_host ne '') {
1065: $hostname = &hostname($login_host);
1066: }
1067: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1068: }
1069:
1070: # --------------------------------------------- Try to change a user's password
1071:
1072: sub changepass {
1073: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1074: $currentpass = &escape($currentpass);
1075: $newpass = &escape($newpass);
1076: my $lonhost = $perlvar{'lonHostID'};
1077: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1078: $server);
1079: if (! $answer) {
1080: &logthis("No reply on password change request to $server ".
1081: "by $uname in domain $udom.");
1082: } elsif ($answer =~ "^ok") {
1083: &logthis("$uname in $udom successfully changed their password ".
1084: "on $server.");
1085: } elsif ($answer =~ "^pwchange_failure") {
1086: &logthis("$uname in $udom was unable to change their password ".
1087: "on $server. The action was blocked by either lcpasswd ".
1088: "or pwchange");
1089: } elsif ($answer =~ "^non_authorized") {
1090: &logthis("$uname in $udom did not get their password correct when ".
1091: "attempting to change it on $server.");
1092: } elsif ($answer =~ "^auth_mode_error") {
1093: &logthis("$uname in $udom attempted to change their password despite ".
1094: "not being locally or internally authenticated on $server.");
1095: } elsif ($answer =~ "^unknown_user") {
1096: &logthis("$uname in $udom attempted to change their password ".
1097: "on $server but were unable to because $server is not ".
1098: "their home server.");
1099: } elsif ($answer =~ "^refused") {
1100: &logthis("$server refused to change $uname in $udom password because ".
1101: "it was sent an unencrypted request to change the password.");
1102: } elsif ($answer =~ "invalid_client") {
1103: &logthis("$server refused to change $uname in $udom password because ".
1104: "it was a reset by e-mail originating from an invalid server.");
1105: }
1106: return $answer;
1107: }
1108:
1109: # ----------------------- Try to determine user's current authentication scheme
1110:
1111: sub queryauthenticate {
1112: my ($uname,$udom)=@_;
1113: my $uhome=&homeserver($uname,$udom);
1114: if (!$uhome) {
1115: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1116: return 'no_host';
1117: }
1118: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1119: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1120: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1121: }
1122: return $answer;
1123: }
1124:
1125: # --------- Try to authenticate user from domain's lib servers (first this one)
1126:
1127: sub authenticate {
1128: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1129: $upass=&escape($upass);
1130: $uname= &LONCAPA::clean_username($uname);
1131: my $uhome=&homeserver($uname,$udom,1);
1132: my $newhome;
1133: if ((!$uhome) || ($uhome eq 'no_host')) {
1134: # Maybe the machine was offline and only re-appeared again recently?
1135: &reconlonc();
1136: # One more
1137: $uhome=&homeserver($uname,$udom,1);
1138: if (($uhome eq 'no_host') && $checkdefauth) {
1139: if (defined(&domain($udom,'primary'))) {
1140: $newhome=&domain($udom,'primary');
1141: }
1142: if ($newhome ne '') {
1143: $uhome = $newhome;
1144: }
1145: }
1146: if ((!$uhome) || ($uhome eq 'no_host')) {
1147: &logthis("User $uname at $udom is unknown in authenticate");
1148: return 'no_host';
1149: }
1150: }
1151: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1152: if ($answer eq 'authorized') {
1153: if ($newhome) {
1154: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1155: return 'no_account_on_host';
1156: } else {
1157: &logthis("User $uname at $udom authorized by $uhome");
1158: return $uhome;
1159: }
1160: }
1161: if ($answer eq 'non_authorized') {
1162: &logthis("User $uname at $udom rejected by $uhome");
1163: return 'no_host';
1164: }
1165: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1166: return 'no_host';
1167: }
1168:
1169: sub can_host_session {
1170: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1171: my $canhost = 1;
1172: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1173: if (ref($remotesessions) eq 'HASH') {
1174: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1175: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1176: $canhost = 0;
1177: } else {
1178: $canhost = 1;
1179: }
1180: }
1181: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1182: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1183: $canhost = 1;
1184: } else {
1185: $canhost = 0;
1186: }
1187: }
1188: if ($canhost) {
1189: if ($remotesessions->{'version'} ne '') {
1190: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1191: if ($reqmajor ne '' && $reqminor ne '') {
1192: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1193: my $major = $1;
1194: my $minor = $2;
1195: if (($major < $reqmajor ) ||
1196: (($major == $reqmajor) && ($minor < $reqminor))) {
1197: $canhost = 0;
1198: }
1199: } else {
1200: $canhost = 0;
1201: }
1202: }
1203: }
1204: }
1205: }
1206: if ($canhost) {
1207: if (ref($hostedsessions) eq 'HASH') {
1208: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1209: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1210: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1211: if (($uint_dom ne '') &&
1212: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1213: $canhost = 0;
1214: } else {
1215: $canhost = 1;
1216: }
1217: }
1218: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1219: if (($uint_dom ne '') &&
1220: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1221: $canhost = 1;
1222: } else {
1223: $canhost = 0;
1224: }
1225: }
1226: }
1227: }
1228: return $canhost;
1229: }
1230:
1231: sub spare_can_host {
1232: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1233: my $canhost=1;
1234: my $try_server_hostname = &hostname($try_server);
1235: my $serverhomeID = &get_server_homeID($try_server_hostname);
1236: my $serverhomedom = &host_domain($serverhomeID);
1237: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1238: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1239: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1240: $canhost = 0;
1241: }
1242: }
1243: if (($canhost) && ($uint_dom)) {
1244: my @intdoms;
1245: my $internet_names = &get_internet_names($try_server);
1246: if (ref($internet_names) eq 'ARRAY') {
1247: @intdoms = @{$internet_names};
1248: }
1249: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1250: my $remoterev = &get_server_loncaparev(undef,$try_server);
1251: $canhost = &can_host_session($udom,$try_server,$remoterev,
1252: $remotesessions,
1253: $defdomdefaults{'hostedsessions'});
1254: }
1255: }
1256: return $canhost;
1257: }
1258:
1259: sub this_host_spares {
1260: my ($dom) = @_;
1261: my ($dom_in_use,$lonhost_in_use,$result);
1262: my @hosts = ¤t_machine_ids();
1263: foreach my $lonhost (@hosts) {
1264: if (&host_domain($lonhost) eq $dom) {
1265: $dom_in_use = $dom;
1266: $lonhost_in_use = $lonhost;
1267: last;
1268: }
1269: }
1270: if ($dom_in_use ne '') {
1271: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1272: }
1273: if (ref($result) ne 'HASH') {
1274: $lonhost_in_use = $perlvar{'lonHostID'};
1275: $dom_in_use = &host_domain($lonhost_in_use);
1276: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1277: if (ref($result) ne 'HASH') {
1278: $result = \%spareid;
1279: }
1280: }
1281: return $result;
1282: }
1283:
1284: sub spares_for_offload {
1285: my ($dom_in_use,$lonhost_in_use) = @_;
1286: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1287: if (defined($cached)) {
1288: return $result;
1289: } else {
1290: my $cachetime = 60*60*24;
1291: my %domconfig =
1292: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1293: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1294: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1295: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1296: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1297: }
1298: }
1299: }
1300: }
1301: return;
1302: }
1303:
1304: sub get_lonbalancer_config {
1305: my ($servers) = @_;
1306: my ($currbalancer,$currtargets);
1307: if (ref($servers) eq 'HASH') {
1308: foreach my $server (keys(%{$servers})) {
1309: my %what = (
1310: spareid => 1,
1311: perlvar => 1,
1312: );
1313: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1314: if ($result eq 'ok') {
1315: if (ref($returnhash) eq 'HASH') {
1316: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1317: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1318: $currbalancer = $server;
1319: $currtargets = {};
1320: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1321: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1322: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1323: }
1324: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1325: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1326: }
1327: }
1328: last;
1329: }
1330: }
1331: }
1332: }
1333: }
1334: }
1335: return ($currbalancer,$currtargets);
1336: }
1337:
1338: sub check_loadbalancing {
1339: my ($uname,$udom,$caller) = @_;
1340: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1341: $rule_in_effect,$offloadto,$otherserver);
1342: my $lonhost = $perlvar{'lonHostID'};
1343: my @hosts = ¤t_machine_ids();
1344: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1345: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1346: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1347: my $serverhomedom = &host_domain($lonhost);
1348: my $domneedscache;
1349: my $cachetime = 60*60*24;
1350:
1351: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1352: $dom_in_use = $udom;
1353: $homeintdom = 1;
1354: } else {
1355: $dom_in_use = $serverhomedom;
1356: }
1357: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1358: unless (defined($cached)) {
1359: my %domconfig =
1360: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1361: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1362: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1363: } else {
1364: $domneedscache = $dom_in_use;
1365: }
1366: }
1367: if (ref($result) eq 'HASH') {
1368: ($is_balancer,$currtargets,$currrules) =
1369: &check_balancer_result($result,@hosts);
1370: if ($is_balancer) {
1371: if (ref($currrules) eq 'HASH') {
1372: if ($homeintdom) {
1373: if ($uname ne '') {
1374: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1375: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1376: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1377: $rule_in_effect = $currrules->{'_LC_author'};
1378: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1379: $rule_in_effect = $currrules->{'_LC_adv'}
1380: }
1381: }
1382: if ($rule_in_effect eq '') {
1383: my %userenv = &userenvironment($udom,$uname,'inststatus');
1384: if ($userenv{'inststatus'} ne '') {
1385: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1386: my ($othertitle,$usertypes,$types) =
1387: &Apache::loncommon::sorted_inst_types($udom);
1388: if (ref($types) eq 'ARRAY') {
1389: foreach my $type (@{$types}) {
1390: if (grep(/^\Q$type\E$/,@statuses)) {
1391: if (exists($currrules->{$type})) {
1392: $rule_in_effect = $currrules->{$type};
1393: }
1394: }
1395: }
1396: }
1397: } else {
1398: if (exists($currrules->{'default'})) {
1399: $rule_in_effect = $currrules->{'default'};
1400: }
1401: }
1402: }
1403: } else {
1404: if (exists($currrules->{'default'})) {
1405: $rule_in_effect = $currrules->{'default'};
1406: }
1407: }
1408: } else {
1409: if ($currrules->{'_LC_external'} ne '') {
1410: $rule_in_effect = $currrules->{'_LC_external'};
1411: }
1412: }
1413: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1414: $uname,$udom);
1415: }
1416: }
1417: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1418: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1419: unless (defined($cached)) {
1420: my %domconfig =
1421: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1422: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1423: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1424: } else {
1425: $domneedscache = $serverhomedom;
1426: }
1427: }
1428: if (ref($result) eq 'HASH') {
1429: ($is_balancer,$currtargets,$currrules) =
1430: &check_balancer_result($result,@hosts);
1431: if ($is_balancer) {
1432: if (ref($currrules) eq 'HASH') {
1433: if ($currrules->{'_LC_internetdom'} ne '') {
1434: $rule_in_effect = $currrules->{'_LC_internetdom'};
1435: }
1436: }
1437: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1438: $uname,$udom);
1439: }
1440: } else {
1441: if ($perlvar{'lonBalancer'} eq 'yes') {
1442: $is_balancer = 1;
1443: $offloadto = &this_host_spares($dom_in_use);
1444: }
1445: unless (defined($cached)) {
1446: $domneedscache = $serverhomedom;
1447: }
1448: }
1449: } else {
1450: if ($perlvar{'lonBalancer'} eq 'yes') {
1451: $is_balancer = 1;
1452: $offloadto = &this_host_spares($dom_in_use);
1453: }
1454: unless (defined($cached)) {
1455: $domneedscache = $serverhomedom;
1456: }
1457: }
1458: if ($domneedscache) {
1459: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1460: }
1461: if ($is_balancer) {
1462: my $lowest_load = 30000;
1463: if (ref($offloadto) eq 'HASH') {
1464: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1465: foreach my $try_server (@{$offloadto->{'primary'}}) {
1466: ($otherserver,$lowest_load) =
1467: &compare_server_load($try_server,$otherserver,$lowest_load);
1468: }
1469: }
1470: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1471:
1472: if (!$found_server) {
1473: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1474: foreach my $try_server (@{$offloadto->{'default'}}) {
1475: ($otherserver,$lowest_load) =
1476: &compare_server_load($try_server,$otherserver,$lowest_load);
1477: }
1478: }
1479: }
1480: } elsif (ref($offloadto) eq 'ARRAY') {
1481: if (@{$offloadto} == 1) {
1482: $otherserver = $offloadto->[0];
1483: } elsif (@{$offloadto} > 1) {
1484: foreach my $try_server (@{$offloadto}) {
1485: ($otherserver,$lowest_load) =
1486: &compare_server_load($try_server,$otherserver,$lowest_load);
1487: }
1488: }
1489: }
1490: unless ($caller eq 'login') {
1491: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1492: $is_balancer = 0;
1493: if ($uname ne '' && $udom ne '') {
1494: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1495:
1496: &appenv({'user.loadbalexempt' => $lonhost,
1497: 'user.loadbalcheck.time' => time});
1498: }
1499: }
1500: }
1501: }
1502: }
1503: return ($is_balancer,$otherserver);
1504: }
1505:
1506: sub check_balancer_result {
1507: my ($result,@hosts) = @_;
1508: my ($is_balancer,$currtargets,$currrules);
1509: if (ref($result) eq 'HASH') {
1510: if ($result->{'lonhost'} ne '') {
1511: my $currbalancer = $result->{'lonhost'};
1512: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1513: $is_balancer = 1;
1514: $currtargets = $result->{'targets'};
1515: $currrules = $result->{'rules'};
1516: }
1517: } else {
1518: foreach my $key (keys(%{$result})) {
1519: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1520: (ref($result->{$key}) eq 'HASH')) {
1521: $is_balancer = 1;
1522: $currrules = $result->{$key}{'rules'};
1523: $currtargets = $result->{$key}{'targets'};
1524: last;
1525: }
1526: }
1527: }
1528: }
1529: return ($is_balancer,$currtargets,$currrules);
1530: }
1531:
1532: sub get_loadbalancer_targets {
1533: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1534: my $offloadto;
1535: if ($rule_in_effect eq 'none') {
1536: return [$perlvar{'lonHostID'}];
1537: } elsif ($rule_in_effect eq '') {
1538: $offloadto = $currtargets;
1539: } else {
1540: if ($rule_in_effect eq 'homeserver') {
1541: my $homeserver = &homeserver($uname,$udom);
1542: if ($homeserver ne 'no_host') {
1543: $offloadto = [$homeserver];
1544: }
1545: } elsif ($rule_in_effect eq 'externalbalancer') {
1546: my %domconfig =
1547: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1548: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1549: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1550: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1551: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1552: }
1553: }
1554: } else {
1555: my %servers = &internet_dom_servers($udom);
1556: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1557: if (&hostname($remotebalancer) ne '') {
1558: $offloadto = [$remotebalancer];
1559: }
1560: }
1561: } elsif (&hostname($rule_in_effect) ne '') {
1562: $offloadto = [$rule_in_effect];
1563: }
1564: }
1565: return $offloadto;
1566: }
1567:
1568: sub internet_dom_servers {
1569: my ($dom) = @_;
1570: my (%uniqservers,%servers);
1571: my $primaryserver = &hostname(&domain($dom,'primary'));
1572: my @machinedoms = &machine_domains($primaryserver);
1573: foreach my $mdom (@machinedoms) {
1574: my %currservers = %servers;
1575: my %server = &get_servers($mdom);
1576: %servers = (%currservers,%server);
1577: }
1578: my %by_hostname;
1579: foreach my $id (keys(%servers)) {
1580: push(@{$by_hostname{$servers{$id}}},$id);
1581: }
1582: foreach my $hostname (sort(keys(%by_hostname))) {
1583: if (@{$by_hostname{$hostname}} > 1) {
1584: my $match = 0;
1585: foreach my $id (@{$by_hostname{$hostname}}) {
1586: if (&host_domain($id) eq $dom) {
1587: $uniqservers{$id} = $hostname;
1588: $match = 1;
1589: }
1590: }
1591: unless ($match) {
1592: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1593: }
1594: } else {
1595: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1596: }
1597: }
1598: return %uniqservers;
1599: }
1600:
1601: sub trusted_domains {
1602: my ($cmdtype,$calldom) = @_;
1603: my (%trusted,%untrusted);
1604: if (&domain($calldom) eq '') {
1605: return (\%trusted,\%untrusted);
1606: }
1607: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|domroles|catalog|reqcrs|msg)$/) {
1608: return (\%trusted,\%untrusted);
1609: }
1610: my $callprimary = &domain($calldom,'primary');
1611: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1612: if ($intcalldom eq '') {
1613: return (\%trusted,\%untrusted);
1614: }
1615:
1616: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1617: unless (defined($cached)) {
1618: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1619: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1620: $trustconfig = $domconfig{'trust'};
1621: }
1622: if (ref($trustconfig)) {
1623: my (%possexc,%possinc,@allexc,@allinc);
1624: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1625: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1626: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1627: }
1628: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1629: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1630: }
1631: }
1632: if (keys(%possexc)) {
1633: if (keys(%possinc)) {
1634: foreach my $key (sort(keys(%possexc))) {
1635: next if ($key eq $intcalldom);
1636: unless ($possinc{$key}) {
1637: push(@allexc,$key);
1638: }
1639: }
1640: } else {
1641: @allexc = sort(keys(%possexc));
1642: }
1643: }
1644: if (keys(%possinc)) {
1645: $possinc{$intcalldom} = 1;
1646: @allinc = sort(keys(%possinc));
1647: }
1648: if ((@allexc > 0) || (@allinc > 0)) {
1649: my %doms_by_intdom;
1650: my %allintdoms = &all_host_intdom();
1651: my %alldoms = &all_host_domain();
1652: foreach my $key (%allintdoms) {
1653: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1654: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1655: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1656: }
1657: } else {
1658: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1659: }
1660: }
1661: foreach my $exc (@allexc) {
1662: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1663: map { $untrusted{$_}; } @{$doms_by_intdom{$exc}};
1664: }
1665: }
1666: foreach my $inc (@allinc) {
1667: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1668: map { $trusted{$_}; } @{$doms_by_intdom{$inc}};
1669: }
1670: }
1671: }
1672: }
1673: return(\%trusted,\%untrusted);
1674: }
1675:
1676: sub will_trust {
1677: my ($cmdtype,$domain,$possdom) = @_;
1678: return 1 if ($domain eq $possdom);
1679: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1680: my $willtrust;
1681: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1682: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1683: $willtrust = 1;
1684: }
1685: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1686: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1687: $willtrust = 1;
1688: }
1689: } else {
1690: $willtrust = 1;
1691: }
1692: return $willtrust;
1693: }
1694:
1695: # ---------------------- Find the homebase for a user from domain's lib servers
1696:
1697: my %homecache;
1698: sub homeserver {
1699: my ($uname,$udom,$ignoreBadCache)=@_;
1700: my $index="$uname:$udom";
1701:
1702: if (exists($homecache{$index})) { return $homecache{$index}; }
1703:
1704: my %servers = &get_servers($udom,'library');
1705: foreach my $tryserver (keys(%servers)) {
1706: next if ($ignoreBadCache ne 'true' &&
1707: exists($badServerCache{$tryserver}));
1708:
1709: my $answer=reply("home:$udom:$uname",$tryserver);
1710: if ($answer eq 'found') {
1711: delete($badServerCache{$tryserver});
1712: return $homecache{$index}=$tryserver;
1713: } elsif ($answer eq 'no_host') {
1714: $badServerCache{$tryserver}=1;
1715: }
1716: }
1717: return 'no_host';
1718: }
1719:
1720: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1721:
1722: sub idget {
1723: my ($udom,$idsref,$namespace)=@_;
1724: my %returnhash=();
1725: my @ids=();
1726: if (ref($idsref) eq 'ARRAY') {
1727: @ids = @{$idsref};
1728: } else {
1729: return %returnhash;
1730: }
1731: if ($namespace eq '') {
1732: $namespace = 'ids';
1733: }
1734:
1735: my %servers = &get_servers($udom,'library');
1736: foreach my $tryserver (keys(%servers)) {
1737: my $idlist=join('&', map { &escape($_); } @ids);
1738: if ($namespace eq 'ids') {
1739: $idlist=~tr/A-Z/a-z/;
1740: }
1741: my $reply;
1742: if ($namespace eq 'ids') {
1743: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1744: } else {
1745: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1746: }
1747: my @answer=();
1748: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1749: @answer=split(/\&/,$reply);
1750: } ;
1751: my $i;
1752: for ($i=0;$i<=$#ids;$i++) {
1753: if ($answer[$i]) {
1754: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1755: }
1756: }
1757: }
1758: return %returnhash;
1759: }
1760:
1761: # ------------------------------------- Find the IDs behind a list of usernames
1762:
1763: sub idrget {
1764: my ($udom,@unames)=@_;
1765: my %returnhash=();
1766: foreach my $uname (@unames) {
1767: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1768: }
1769: return %returnhash;
1770: }
1771:
1772: # Store away a list of names and associated student/employee IDs or clicker IDs
1773:
1774: sub idput {
1775: my ($udom,$idsref,$uhom,$namespace)=@_;
1776: my %servers=();
1777: my %ids=();
1778: my %byid = ();
1779: if (ref($idsref) eq 'HASH') {
1780: %ids=%{$idsref};
1781: }
1782: if ($namespace eq '') {
1783: $namespace = 'ids';
1784: }
1785: foreach my $uname (keys(%ids)) {
1786: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1787: if ($uhom eq '') {
1788: $uhom=&homeserver($uname,$udom);
1789: }
1790: if ($uhom ne 'no_host') {
1791: my $esc_unam=&escape($uname);
1792: if ($namespace eq 'ids') {
1793: my $id=&escape($ids{$uname});
1794: $id=~tr/A-Z/a-z/;
1795: my $esc_unam=&escape($uname);
1796: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1797: } else {
1798: my @currids = split(/,/,$ids{$uname});
1799: foreach my $id (@currids) {
1800: $byid{$uhom}{$id} .= $uname.',';
1801: }
1802: }
1803: }
1804: }
1805: if ($namespace eq 'clickers') {
1806: foreach my $server (keys(%byid)) {
1807: if (ref($byid{$server}) eq 'HASH') {
1808: foreach my $id (keys(%{$byid{$server}})) {
1809: $byid{$server} =~ s/,$//;
1810: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1811: }
1812: }
1813: }
1814: }
1815: foreach my $server (keys(%servers)) {
1816: $servers{$server} =~ s/\&$//;
1817: if ($namespace eq 'ids') {
1818: &critical('idput:'.$udom.':'.$servers{$server},$server);
1819: } else {
1820: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1821: }
1822: }
1823: }
1824:
1825: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1826:
1827: sub iddel {
1828: my ($udom,$idshashref,$uhome,$namespace)=@_;
1829: my %result=();
1830: my %ids=();
1831: my %byid = ();
1832: if (ref($idshashref) eq 'HASH') {
1833: %ids=%{$idshashref};
1834: } else {
1835: return %result;
1836: }
1837: if ($namespace eq '') {
1838: $namespace = 'ids';
1839: }
1840: my %servers=();
1841: while (my ($id,$unamestr) = each(%ids)) {
1842: if ($namespace eq 'ids') {
1843: my $uhom = $uhome;
1844: if ($uhom eq '') {
1845: $uhom=&homeserver($unamestr,$udom);
1846: }
1847: if ($uhom ne 'no_host') {
1848: $servers{$uhom}.='&'.&escape($id);
1849: }
1850: } else {
1851: my @curritems = split(/,/,$ids{$id});
1852: foreach my $uname (@curritems) {
1853: my $uhom = $uhome;
1854: if ($uhom eq '') {
1855: $uhom=&homeserver($uname,$udom);
1856: }
1857: if ($uhom ne 'no_host') {
1858: $byid{$uhom}{$id} .= $uname.',';
1859: }
1860: }
1861: }
1862: }
1863: if ($namespace eq 'clickers') {
1864: foreach my $server (keys(%byid)) {
1865: if (ref($byid{$server}) eq 'HASH') {
1866: foreach my $id (keys(%{$byid{$server}})) {
1867: $byid{$server}{$id} =~ s/,$//;
1868: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
1869: }
1870: }
1871: }
1872: }
1873: foreach my $server (keys(%servers)) {
1874: $servers{$server} =~ s/\&$//;
1875: if ($namespace eq 'ids') {
1876: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1877: } elsif ($namespace eq 'clickers') {
1878: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
1879: }
1880: }
1881: return %result;
1882: }
1883:
1884: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
1885:
1886: sub updateclickers {
1887: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
1888: my %clickers;
1889: if (ref($idshashref) eq 'HASH') {
1890: %clickers=%{$idshashref};
1891: } else {
1892: return;
1893: }
1894: my $items='';
1895: foreach my $item (keys(%clickers)) {
1896: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
1897: }
1898: $items=~s/\&$//;
1899: my $request = "updateclickers:$udom:$action:$items";
1900: if ($critical) {
1901: return &critical($request,$uhome);
1902: } else {
1903: return &reply($request,$uhome);
1904: }
1905: }
1906:
1907: # ------------------------------dump from db file owned by domainconfig user
1908: sub dump_dom {
1909: my ($namespace, $udom, $regexp) = @_;
1910:
1911: $udom ||= $env{'user.domain'};
1912:
1913: return () unless $udom;
1914:
1915: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1916: }
1917:
1918: # ------------------------------------------ get items from domain db files
1919:
1920: sub get_dom {
1921: my ($namespace,$storearr,$udom,$uhome)=@_;
1922: return if ($udom eq 'public');
1923: my $items='';
1924: foreach my $item (@$storearr) {
1925: $items.=&escape($item).'&';
1926: }
1927: $items=~s/\&$//;
1928: if (!$udom) {
1929: $udom=$env{'user.domain'};
1930: return if ($udom eq 'public');
1931: if (defined(&domain($udom,'primary'))) {
1932: $uhome=&domain($udom,'primary');
1933: } else {
1934: undef($uhome);
1935: }
1936: } else {
1937: if (!$uhome) {
1938: if (defined(&domain($udom,'primary'))) {
1939: $uhome=&domain($udom,'primary');
1940: }
1941: }
1942: }
1943: if ($udom && $uhome && ($uhome ne 'no_host')) {
1944: my $rep;
1945: if ($namespace =~ /^enc/) {
1946: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
1947: } else {
1948: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1949: }
1950: my %returnhash;
1951: if ($rep eq '' || $rep =~ /^error: 2 /) {
1952: return %returnhash;
1953: }
1954: my @pairs=split(/\&/,$rep);
1955: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1956: return @pairs;
1957: }
1958: my $i=0;
1959: foreach my $item (@$storearr) {
1960: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1961: $i++;
1962: }
1963: return %returnhash;
1964: } else {
1965: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1966: }
1967: }
1968:
1969: # -------------------------------------------- put items in domain db files
1970:
1971: sub put_dom {
1972: my ($namespace,$storehash,$udom,$uhome)=@_;
1973: if (!$udom) {
1974: $udom=$env{'user.domain'};
1975: if (defined(&domain($udom,'primary'))) {
1976: $uhome=&domain($udom,'primary');
1977: } else {
1978: undef($uhome);
1979: }
1980: } else {
1981: if (!$uhome) {
1982: if (defined(&domain($udom,'primary'))) {
1983: $uhome=&domain($udom,'primary');
1984: }
1985: }
1986: }
1987: if ($udom && $uhome && ($uhome ne 'no_host')) {
1988: my $items='';
1989: foreach my $item (keys(%$storehash)) {
1990: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1991: }
1992: $items=~s/\&$//;
1993: if ($namespace =~ /^enc/) {
1994: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
1995: } else {
1996: return &reply("putdom:$udom:$namespace:$items",$uhome);
1997: }
1998: } else {
1999: &logthis("put_dom failed - no homeserver and/or domain");
2000: }
2001: }
2002:
2003: # --------------------- newput for items in db file owned by domainconfig user
2004: sub newput_dom {
2005: my ($namespace,$storehash,$udom) = @_;
2006: my $result;
2007: if (!$udom) {
2008: $udom=$env{'user.domain'};
2009: }
2010: if ($udom) {
2011: my $uname = &get_domainconfiguser($udom);
2012: $result = &newput($namespace,$storehash,$udom,$uname);
2013: }
2014: return $result;
2015: }
2016:
2017: # --------------------- delete for items in db file owned by domainconfig user
2018: sub del_dom {
2019: my ($namespace,$storearr,$udom)=@_;
2020: if (ref($storearr) eq 'ARRAY') {
2021: if (!$udom) {
2022: $udom=$env{'user.domain'};
2023: }
2024: if ($udom) {
2025: my $uname = &get_domainconfiguser($udom);
2026: return &del($namespace,$storearr,$udom,$uname);
2027: }
2028: }
2029: }
2030:
2031: # ----------------------------------construct domainconfig user for a domain
2032: sub get_domainconfiguser {
2033: my ($udom) = @_;
2034: return $udom.'-domainconfig';
2035: }
2036:
2037: sub retrieve_inst_usertypes {
2038: my ($udom) = @_;
2039: my (%returnhash,@order);
2040: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2041: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2042: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2043: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2044: } else {
2045: if (defined(&domain($udom,'primary'))) {
2046: my $uhome=&domain($udom,'primary');
2047: my $rep=&reply("inst_usertypes:$udom",$uhome);
2048: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2049: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2050: return (\%returnhash,\@order);
2051: }
2052: my ($hashitems,$orderitems) = split(/:/,$rep);
2053: my @pairs=split(/\&/,$hashitems);
2054: foreach my $item (@pairs) {
2055: my ($key,$value)=split(/=/,$item,2);
2056: $key = &unescape($key);
2057: next if ($key =~ /^error: 2 /);
2058: $returnhash{$key}=&thaw_unescape($value);
2059: }
2060: my @esc_order = split(/\&/,$orderitems);
2061: foreach my $item (@esc_order) {
2062: push(@order,&unescape($item));
2063: }
2064: } else {
2065: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2066: }
2067: return (\%returnhash,\@order);
2068: }
2069: }
2070:
2071: sub is_domainimage {
2072: my ($url) = @_;
2073: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2074: if (&domain($1) ne '') {
2075: return '1';
2076: }
2077: }
2078: return;
2079: }
2080:
2081: sub inst_directory_query {
2082: my ($srch) = @_;
2083: my $udom = $srch->{'srchdomain'};
2084: my %results;
2085: my $homeserver = &domain($udom,'primary');
2086: my $outcome;
2087: if ($homeserver ne '') {
2088: my $queryid=&reply("querysend:instdirsearch:".
2089: &escape($srch->{'srchby'}).':'.
2090: &escape($srch->{'srchterm'}).':'.
2091: &escape($srch->{'srchtype'}),$homeserver);
2092: my $host=&hostname($homeserver);
2093: if ($queryid !~/^\Q$host\E\_/) {
2094: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2095: return;
2096: }
2097: my $response = &get_query_reply($queryid);
2098: my $maxtries = 5;
2099: my $tries = 1;
2100: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2101: $response = &get_query_reply($queryid);
2102: $tries ++;
2103: }
2104:
2105: if (!&error($response) && $response ne 'refused') {
2106: if ($response eq 'unavailable') {
2107: $outcome = $response;
2108: } else {
2109: $outcome = 'ok';
2110: my @matches = split(/\n/,$response);
2111: foreach my $match (@matches) {
2112: my ($key,$value) = split(/=/,$match);
2113: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2114: }
2115: }
2116: }
2117: }
2118: return ($outcome,%results);
2119: }
2120:
2121: sub usersearch {
2122: my ($srch) = @_;
2123: my $dom = $srch->{'srchdomain'};
2124: my %results;
2125: my %libserv = &all_library();
2126: my $query = 'usersearch';
2127: foreach my $tryserver (keys(%libserv)) {
2128: if (&host_domain($tryserver) eq $dom) {
2129: my $host=&hostname($tryserver);
2130: my $queryid=
2131: &reply("querysend:".&escape($query).':'.
2132: &escape($srch->{'srchby'}).':'.
2133: &escape($srch->{'srchtype'}).':'.
2134: &escape($srch->{'srchterm'}),$tryserver);
2135: if ($queryid !~/^\Q$host\E\_/) {
2136: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2137: next;
2138: }
2139: my $reply = &get_query_reply($queryid);
2140: my $maxtries = 1;
2141: my $tries = 1;
2142: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2143: $reply = &get_query_reply($queryid);
2144: $tries ++;
2145: }
2146: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2147: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2148: } else {
2149: my @matches;
2150: if ($reply =~ /\n/) {
2151: @matches = split(/\n/,$reply);
2152: } else {
2153: @matches = split(/\&/,$reply);
2154: }
2155: foreach my $match (@matches) {
2156: my ($uname,$udom,%userhash);
2157: foreach my $entry (split(/:/,$match)) {
2158: my ($key,$value) =
2159: map {&unescape($_);} split(/=/,$entry);
2160: $userhash{$key} = $value;
2161: if ($key eq 'username') {
2162: $uname = $value;
2163: } elsif ($key eq 'domain') {
2164: $udom = $value;
2165: }
2166: }
2167: $results{$uname.':'.$udom} = \%userhash;
2168: }
2169: }
2170: }
2171: }
2172: return %results;
2173: }
2174:
2175: sub get_instuser {
2176: my ($udom,$uname,$id) = @_;
2177: my $homeserver = &domain($udom,'primary');
2178: my ($outcome,%results);
2179: if ($homeserver ne '') {
2180: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2181: &escape($id).':'.&escape($udom),$homeserver);
2182: my $host=&hostname($homeserver);
2183: if ($queryid !~/^\Q$host\E\_/) {
2184: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2185: return;
2186: }
2187: my $response = &get_query_reply($queryid);
2188: my $maxtries = 5;
2189: my $tries = 1;
2190: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2191: $response = &get_query_reply($queryid);
2192: $tries ++;
2193: }
2194: if (!&error($response) && $response ne 'refused') {
2195: if ($response eq 'unavailable') {
2196: $outcome = $response;
2197: } else {
2198: $outcome = 'ok';
2199: my @matches = split(/\n/,$response);
2200: foreach my $match (@matches) {
2201: my ($key,$value) = split(/=/,$match);
2202: $results{&unescape($key)} = &thaw_unescape($value);
2203: }
2204: }
2205: }
2206: }
2207: my %userinfo;
2208: if (ref($results{$uname}) eq 'HASH') {
2209: %userinfo = %{$results{$uname}};
2210: }
2211: return ($outcome,%userinfo);
2212: }
2213:
2214: sub get_multiple_instusers {
2215: my ($udom,$users,$caller) = @_;
2216: my ($outcome,$results);
2217: if (ref($users) eq 'HASH') {
2218: my $count = keys(%{$users});
2219: my $requested = &freeze_escape($users);
2220: my $homeserver = &domain($udom,'primary');
2221: if ($homeserver ne '') {
2222: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2223: my $host=&hostname($homeserver);
2224: if ($queryid !~/^\Q$host\E\_/) {
2225: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2226: ' for host: '.$homeserver.'in domain '.$udom);
2227: return ($outcome,$results);
2228: }
2229: my $response = &get_query_reply($queryid);
2230: my $maxtries = 5;
2231: if ($count > 100) {
2232: $maxtries = 1+int($count/20);
2233: }
2234: my $tries = 1;
2235: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2236: $response = &get_query_reply($queryid);
2237: $tries ++;
2238: }
2239: if ($response eq '') {
2240: $results = {};
2241: foreach my $key (keys(%{$users})) {
2242: my ($uname,$id);
2243: if ($caller eq 'id') {
2244: $id = $key;
2245: } else {
2246: $uname = $key;
2247: }
2248: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2249: $outcome = $resp;
2250: if ($resp eq 'ok') {
2251: %{$results} = (%{$results}, %info);
2252: } else {
2253: last;
2254: }
2255: }
2256: } elsif(!&error($response) && ($response ne 'refused')) {
2257: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2258: $outcome = $response;
2259: } else {
2260: ($outcome,my $userdata) = split(/=/,$response,2);
2261: if ($outcome eq 'ok') {
2262: $results = &thaw_unescape($userdata);
2263: }
2264: }
2265: }
2266: }
2267: }
2268: return ($outcome,$results);
2269: }
2270:
2271: sub inst_rulecheck {
2272: my ($udom,$uname,$id,$item,$rules) = @_;
2273: my %returnhash;
2274: if ($udom ne '') {
2275: if (ref($rules) eq 'ARRAY') {
2276: @{$rules} = map {&escape($_);} (@{$rules});
2277: my $rulestr = join(':',@{$rules});
2278: my $homeserver=&domain($udom,'primary');
2279: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2280: my $response;
2281: if ($item eq 'username') {
2282: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2283: ':'.&escape($uname).':'.$rulestr,
2284: $homeserver));
2285: } elsif ($item eq 'id') {
2286: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2287: ':'.&escape($id).':'.$rulestr,
2288: $homeserver));
2289: } elsif ($item eq 'selfcreate') {
2290: $response=&unescape(&reply('instselfcreatecheck:'.
2291: &escape($udom).':'.&escape($uname).
2292: ':'.$rulestr,$homeserver));
2293: }
2294: if ($response ne 'refused') {
2295: my @pairs=split(/\&/,$response);
2296: foreach my $item (@pairs) {
2297: my ($key,$value)=split(/=/,$item,2);
2298: $key = &unescape($key);
2299: next if ($key =~ /^error: 2 /);
2300: $returnhash{$key}=&thaw_unescape($value);
2301: }
2302: }
2303: }
2304: }
2305: }
2306: return %returnhash;
2307: }
2308:
2309: sub inst_userrules {
2310: my ($udom,$check) = @_;
2311: my (%ruleshash,@ruleorder);
2312: if ($udom ne '') {
2313: my $homeserver=&domain($udom,'primary');
2314: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2315: my $response;
2316: if ($check eq 'id') {
2317: $response=&reply('instidrules:'.&escape($udom),
2318: $homeserver);
2319: } elsif ($check eq 'email') {
2320: $response=&reply('instemailrules:'.&escape($udom),
2321: $homeserver);
2322: } else {
2323: $response=&reply('instuserrules:'.&escape($udom),
2324: $homeserver);
2325: }
2326: if (($response ne 'refused') && ($response ne 'error') &&
2327: ($response ne 'unknown_cmd') &&
2328: ($response ne 'no_such_host')) {
2329: my ($hashitems,$orderitems) = split(/:/,$response);
2330: my @pairs=split(/\&/,$hashitems);
2331: foreach my $item (@pairs) {
2332: my ($key,$value)=split(/=/,$item,2);
2333: $key = &unescape($key);
2334: next if ($key =~ /^error: 2 /);
2335: $ruleshash{$key}=&thaw_unescape($value);
2336: }
2337: my @esc_order = split(/\&/,$orderitems);
2338: foreach my $item (@esc_order) {
2339: push(@ruleorder,&unescape($item));
2340: }
2341: }
2342: }
2343: }
2344: return (\%ruleshash,\@ruleorder);
2345: }
2346:
2347: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2348:
2349: sub get_domain_defaults {
2350: my ($domain,$ignore_cache) = @_;
2351: return if (($domain eq '') || ($domain eq 'public'));
2352: my $cachetime = 60*60*24;
2353: unless ($ignore_cache) {
2354: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2355: if (defined($cached)) {
2356: if (ref($result) eq 'HASH') {
2357: return %{$result};
2358: }
2359: }
2360: }
2361: my %domdefaults;
2362: my %domconfig =
2363: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2364: 'requestcourses','inststatus',
2365: 'coursedefaults','usersessions',
2366: 'requestauthor','selfenrollment',
2367: 'coursecategories','ssl','autoenroll',
2368: 'trust','helpsettings'],$domain);
2369: my @coursetypes = ('official','unofficial','community','textbook','placement');
2370: if (ref($domconfig{'defaults'}) eq 'HASH') {
2371: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2372: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2373: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2374: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2375: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2376: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2377: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2378: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2379: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2380: } else {
2381: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2382: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2383: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2384: }
2385: if (ref($domconfig{'quotas'}) eq 'HASH') {
2386: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2387: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2388: } else {
2389: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2390: }
2391: my @usertools = ('aboutme','blog','webdav','portfolio');
2392: foreach my $item (@usertools) {
2393: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2394: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2395: }
2396: }
2397: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2398: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2399: }
2400: }
2401: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2402: foreach my $item ('official','unofficial','community','textbook','placement') {
2403: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2404: }
2405: }
2406: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2407: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2408: }
2409: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2410: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2411: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2412: }
2413: }
2414: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2415: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2416: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2417: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2418: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2419: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2420: }
2421: foreach my $type (@coursetypes) {
2422: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2423: unless ($type eq 'community') {
2424: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2425: }
2426: }
2427: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2428: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2429: }
2430: if ($domdefaults{'postsubmit'} eq 'on') {
2431: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2432: $domdefaults{$type.'postsubtimeout'} =
2433: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2434: }
2435: }
2436: }
2437: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2438: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2439: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2440: if (@clonecodes) {
2441: $domdefaults{'canclone'} = join('+',@clonecodes);
2442: }
2443: }
2444: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2445: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2446: }
2447: }
2448: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2449: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2450: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2451: }
2452: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2453: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2454: }
2455: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2456: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2457: }
2458: }
2459: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2460: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2461: my @settings = ('types','registered','enroll_dates','access_dates','section',
2462: 'approval','limit');
2463: foreach my $type (@coursetypes) {
2464: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2465: my @mgrdc = ();
2466: foreach my $item (@settings) {
2467: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2468: push(@mgrdc,$item);
2469: }
2470: }
2471: if (@mgrdc) {
2472: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2473: }
2474: }
2475: }
2476: }
2477: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2478: foreach my $type (@coursetypes) {
2479: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2480: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2481: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2482: }
2483: }
2484: }
2485: }
2486: }
2487: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2488: $domdefaults{'catauth'} = 'std';
2489: $domdefaults{'catunauth'} = 'std';
2490: if ($domconfig{'coursecategories'}{'auth'}) {
2491: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2492: }
2493: if ($domconfig{'coursecategories'}{'unauth'}) {
2494: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2495: }
2496: }
2497: if (ref($domconfig{'ssl'}) eq 'HASH') {
2498: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2499: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2500: }
2501: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2502: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2503: }
2504: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2505: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2506: }
2507: }
2508: if (ref($domconfig{'trust'}) eq 'HASH') {
2509: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2510: foreach my $prefix (@prefixes) {
2511: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2512: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2513: }
2514: }
2515: }
2516: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2517: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2518: }
2519: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2520: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2521: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2522: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2523: }
2524: }
2525: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2526: return %domdefaults;
2527: }
2528:
2529: sub course_portal_url {
2530: my ($cnum,$cdom) = @_;
2531: my $chome = &homeserver($cnum,$cdom);
2532: my $hostname = &hostname($chome);
2533: my $protocol = $protocol{$chome};
2534: $protocol = 'http' if ($protocol ne 'https');
2535: my %domdefaults = &get_domain_defaults($cdom);
2536: my $firsturl;
2537: if ($domdefaults{'portal_def'}) {
2538: $firsturl = $domdefaults{'portal_def'};
2539: } else {
2540: $firsturl = $protocol.'://'.$hostname;
2541: }
2542: return $firsturl;
2543: }
2544:
2545: # --------------------------------------------------- Assign a key to a student
2546:
2547: sub assign_access_key {
2548: #
2549: # a valid key looks like uname:udom#comments
2550: # comments are being appended
2551: #
2552: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2553: $kdom=
2554: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2555: $knum=
2556: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2557: $cdom=
2558: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2559: $cnum=
2560: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2561: $udom=$env{'user.name'} unless (defined($udom));
2562: $uname=$env{'user.domain'} unless (defined($uname));
2563: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2564: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2565: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2566: # assigned to this person
2567: # - this should not happen,
2568: # unless something went wrong
2569: # the first time around
2570: # ready to assign
2571: $logentry=$1.'; '.$logentry;
2572: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2573: $kdom,$knum) eq 'ok') {
2574: # key now belongs to user
2575: my $envkey='key.'.$cdom.'_'.$cnum;
2576: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2577: &appenv({'environment.'.$envkey => $ckey});
2578: return 'ok';
2579: } else {
2580: return
2581: 'error: Count not permanently assign key, will need to be re-entered later.';
2582: }
2583: } else {
2584: return 'error: Could not assign key, try again later.';
2585: }
2586: } elsif (!$existing{$ckey}) {
2587: # the key does not exist
2588: return 'error: The key does not exist';
2589: } else {
2590: # the key is somebody else's
2591: return 'error: The key is already in use';
2592: }
2593: }
2594:
2595: # ------------------------------------------ put an additional comment on a key
2596:
2597: sub comment_access_key {
2598: #
2599: # a valid key looks like uname:udom#comments
2600: # comments are being appended
2601: #
2602: my ($ckey,$cdom,$cnum,$logentry)=@_;
2603: $cdom=
2604: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2605: $cnum=
2606: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2607: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2608: if ($existing{$ckey}) {
2609: $existing{$ckey}.='; '.$logentry;
2610: # ready to assign
2611: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2612: $cdom,$cnum) eq 'ok') {
2613: return 'ok';
2614: } else {
2615: return 'error: Count not store comment.';
2616: }
2617: } else {
2618: # the key does not exist
2619: return 'error: The key does not exist';
2620: }
2621: }
2622:
2623: # ------------------------------------------------------ Generate a set of keys
2624:
2625: sub generate_access_keys {
2626: my ($number,$cdom,$cnum,$logentry)=@_;
2627: $cdom=
2628: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2629: $cnum=
2630: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2631: unless (&allowed('mky',$cdom)) { return 0; }
2632: unless (($cdom) && ($cnum)) { return 0; }
2633: if ($number>10000) { return 0; }
2634: sleep(2); # make sure don't get same seed twice
2635: srand(time()^($$+($$<<15))); # from "Programming Perl"
2636: my $total=0;
2637: for (my $i=1;$i<=$number;$i++) {
2638: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2639: sprintf("%lx",int(100000*rand)).'-'.
2640: sprintf("%lx",int(100000*rand));
2641: $newkey=~s/1/g/g; # folks mix up 1 and l
2642: $newkey=~s/0/h/g; # and also 0 and O
2643: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2644: if ($existing{$newkey}) {
2645: $i--;
2646: } else {
2647: if (&put('accesskeys',
2648: { $newkey => '# generated '.localtime().
2649: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2650: '; '.$logentry },
2651: $cdom,$cnum) eq 'ok') {
2652: $total++;
2653: }
2654: }
2655: }
2656: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2657: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2658: return $total;
2659: }
2660:
2661: # ------------------------------------------------------- Validate an accesskey
2662:
2663: sub validate_access_key {
2664: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2665: $cdom=
2666: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2667: $cnum=
2668: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2669: $udom=$env{'user.domain'} unless (defined($udom));
2670: $uname=$env{'user.name'} unless (defined($uname));
2671: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2672: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2673: }
2674:
2675: # ------------------------------------- Find the section of student in a course
2676: sub devalidate_getsection_cache {
2677: my ($udom,$unam,$courseid)=@_;
2678: my $hashid="$udom:$unam:$courseid";
2679: &devalidate_cache_new('getsection',$hashid);
2680: }
2681:
2682: sub courseid_to_courseurl {
2683: my ($courseid) = @_;
2684: #already url style courseid
2685: return $courseid if ($courseid =~ m{^/});
2686:
2687: if (exists($env{'course.'.$courseid.'.num'})) {
2688: my $cnum = $env{'course.'.$courseid.'.num'};
2689: my $cdom = $env{'course.'.$courseid.'.domain'};
2690: return "/$cdom/$cnum";
2691: }
2692:
2693: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2694: if (exists($courseinfo{'num'})) {
2695: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2696: }
2697:
2698: return undef;
2699: }
2700:
2701: sub getsection {
2702: my ($udom,$unam,$courseid)=@_;
2703: my $cachetime=1800;
2704:
2705: my $hashid="$udom:$unam:$courseid";
2706: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2707: if (defined($cached)) { return $result; }
2708:
2709: my %Pending;
2710: my %Expired;
2711: #
2712: # Each role can either have not started yet (pending), be active,
2713: # or have expired.
2714: #
2715: # If there is an active role, we are done.
2716: #
2717: # If there is more than one role which has not started yet,
2718: # choose the one which will start sooner
2719: # If there is one role which has not started yet, return it.
2720: #
2721: # If there is more than one expired role, choose the one which ended last.
2722: # If there is a role which has expired, return it.
2723: #
2724: $courseid = &courseid_to_courseurl($courseid);
2725: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2726: foreach my $key (keys(%roleshash)) {
2727: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2728: my $section=$1;
2729: if ($key eq $courseid.'_st') { $section=''; }
2730: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2731: my $now=time;
2732: if (defined($end) && $end && ($now > $end)) {
2733: $Expired{$end}=$section;
2734: next;
2735: }
2736: if (defined($start) && $start && ($now < $start)) {
2737: $Pending{$start}=$section;
2738: next;
2739: }
2740: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2741: }
2742: #
2743: # Presumedly there will be few matching roles from the above
2744: # loop and the sorting time will be negligible.
2745: if (scalar(keys(%Pending))) {
2746: my ($time) = sort {$a <=> $b} keys(%Pending);
2747: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2748: }
2749: if (scalar(keys(%Expired))) {
2750: my @sorted = sort {$a <=> $b} keys(%Expired);
2751: my $time = pop(@sorted);
2752: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2753: }
2754: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2755: }
2756:
2757: sub save_cache {
2758: &purge_remembered();
2759: #&Apache::loncommon::validate_page();
2760: undef(%env);
2761: undef($env_loaded);
2762: }
2763:
2764: my $to_remember=-1;
2765: my %remembered;
2766: my %accessed;
2767: my $kicks=0;
2768: my $hits=0;
2769: sub make_key {
2770: my ($name,$id) = @_;
2771: if (length($id) > 65
2772: && length(&escape($id)) > 200) {
2773: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2774: }
2775: return &escape($name.':'.$id);
2776: }
2777:
2778: sub devalidate_cache_new {
2779: my ($name,$id,$debug) = @_;
2780: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2781: my $remembered_id=$name.':'.$id;
2782: $id=&make_key($name,$id);
2783: $memcache->delete($id);
2784: delete($remembered{$remembered_id});
2785: delete($accessed{$remembered_id});
2786: }
2787:
2788: sub is_cached_new {
2789: my ($name,$id,$debug) = @_;
2790: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2791: if (exists($remembered{$remembered_id})) {
2792: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2793: $accessed{$remembered_id}=[&gettimeofday()];
2794: $hits++;
2795: return ($remembered{$remembered_id},1);
2796: }
2797: $id=&make_key($name,$id);
2798: my $value = $memcache->get($id);
2799: if (!(defined($value))) {
2800: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2801: return (undef,undef);
2802: }
2803: if ($value eq '__undef__') {
2804: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2805: $value=undef;
2806: }
2807: &make_room($remembered_id,$value,$debug);
2808: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2809: return ($value,1);
2810: }
2811:
2812: sub do_cache_new {
2813: my ($name,$id,$value,$time,$debug) = @_;
2814: my $remembered_id=$name.':'.$id;
2815: $id=&make_key($name,$id);
2816: my $setvalue=$value;
2817: if (!defined($setvalue)) {
2818: $setvalue='__undef__';
2819: }
2820: if (!defined($time) ) {
2821: $time=600;
2822: }
2823: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2824: my $result = $memcache->set($id,$setvalue,$time);
2825: if (! $result) {
2826: &logthis("caching of id -> $id failed");
2827: $memcache->disconnect_all();
2828: }
2829: # need to make a copy of $value
2830: &make_room($remembered_id,$value,$debug);
2831: return $value;
2832: }
2833:
2834: sub make_room {
2835: my ($remembered_id,$value,$debug)=@_;
2836:
2837: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2838: : $value;
2839: if ($to_remember<0) { return; }
2840: $accessed{$remembered_id}=[&gettimeofday()];
2841: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2842: my $to_kick;
2843: my $max_time=0;
2844: foreach my $other (keys(%accessed)) {
2845: if (&tv_interval($accessed{$other}) > $max_time) {
2846: $to_kick=$other;
2847: $max_time=&tv_interval($accessed{$other});
2848: }
2849: }
2850: delete($remembered{$to_kick});
2851: delete($accessed{$to_kick});
2852: $kicks++;
2853: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2854: return;
2855: }
2856:
2857: sub purge_remembered {
2858: #&logthis("Tossing ".scalar(keys(%remembered)));
2859: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2860: undef(%remembered);
2861: undef(%accessed);
2862: }
2863: # ------------------------------------- Read an entry from a user's environment
2864:
2865: sub userenvironment {
2866: my ($udom,$unam,@what)=@_;
2867: my $items;
2868: foreach my $item (@what) {
2869: $items.=&escape($item).'&';
2870: }
2871: $items=~s/\&$//;
2872: my %returnhash=();
2873: my $uhome = &homeserver($unam,$udom);
2874: unless ($uhome eq 'no_host') {
2875: my @answer=split(/\&/,
2876: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2877: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2878: return %returnhash;
2879: }
2880: my $i;
2881: for ($i=0;$i<=$#what;$i++) {
2882: $returnhash{$what[$i]}=&unescape($answer[$i]);
2883: }
2884: }
2885: return %returnhash;
2886: }
2887:
2888: # ---------------------------------------------------------- Get a studentphoto
2889: sub studentphoto {
2890: my ($udom,$unam,$ext) = @_;
2891: my $home=&Apache::lonnet::homeserver($unam,$udom);
2892: if (defined($env{'request.course.id'})) {
2893: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2894: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2895: return(&retrievestudentphoto($udom,$unam,$ext));
2896: } else {
2897: my ($result,$perm_reqd)=
2898: &Apache::lonnet::auto_photo_permission($unam,$udom);
2899: if ($result eq 'ok') {
2900: if (!($perm_reqd eq 'yes')) {
2901: return(&retrievestudentphoto($udom,$unam,$ext));
2902: }
2903: }
2904: }
2905: }
2906: } else {
2907: my ($result,$perm_reqd) =
2908: &Apache::lonnet::auto_photo_permission($unam,$udom);
2909: if ($result eq 'ok') {
2910: if (!($perm_reqd eq 'yes')) {
2911: return(&retrievestudentphoto($udom,$unam,$ext));
2912: }
2913: }
2914: }
2915: return '/adm/lonKaputt/lonlogo_broken.gif';
2916: }
2917:
2918: sub retrievestudentphoto {
2919: my ($udom,$unam,$ext,$type) = @_;
2920: my $home=&Apache::lonnet::homeserver($unam,$udom);
2921: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2922: if ($ret eq 'ok') {
2923: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2924: if ($type eq 'thumbnail') {
2925: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2926: }
2927: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2928: return $tokenurl;
2929: } else {
2930: if ($type eq 'thumbnail') {
2931: return '/adm/lonKaputt/genericstudent_tn.gif';
2932: } else {
2933: return '/adm/lonKaputt/lonlogo_broken.gif';
2934: }
2935: }
2936: }
2937:
2938: # -------------------------------------------------------------------- New chat
2939:
2940: sub chatsend {
2941: my ($newentry,$anon,$group)=@_;
2942: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2943: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2944: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2945: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2946: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2947: &escape($newentry)).':'.$group,$chome);
2948: }
2949:
2950: # ------------------------------------------ Find current version of a resource
2951:
2952: sub getversion {
2953: my $fname=&clutter(shift);
2954: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2955: return ¤tversion(&filelocation('',$fname));
2956: }
2957:
2958: sub currentversion {
2959: my $fname=shift;
2960: my $author=$fname;
2961: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2962: my ($udom,$uname)=split(/\//,$author);
2963: my $home=&homeserver($uname,$udom);
2964: if ($home eq 'no_host') {
2965: return -1;
2966: }
2967: my $answer=&reply("currentversion:$fname",$home);
2968: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2969: return -1;
2970: }
2971: return $answer;
2972: }
2973:
2974: #
2975: # Return special version number of resource if set by override, empty otherwise
2976: #
2977: sub usedversion {
2978: my $fname=shift;
2979: unless ($fname) { $fname=$env{'request.uri'}; }
2980: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2981: if ($urlversion) { return $urlversion; }
2982: return '';
2983: }
2984:
2985: # ----------------------------- Subscribe to a resource, return URL if possible
2986:
2987: sub subscribe {
2988: my $fname=shift;
2989: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2990: $fname=~s/[\n\r]//g;
2991: my $author=$fname;
2992: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2993: my ($udom,$uname)=split(/\//,$author);
2994: my $home=homeserver($uname,$udom);
2995: if ($home eq 'no_host') {
2996: return 'not_found';
2997: }
2998: my $answer=reply("sub:$fname",$home);
2999: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3000: $answer.=' by '.$home;
3001: }
3002: return $answer;
3003: }
3004:
3005: # -------------------------------------------------------------- Replicate file
3006:
3007: sub repcopy {
3008: my $filename=shift;
3009: $filename=~s/\/+/\//g;
3010: my $londocroot = $perlvar{'lonDocRoot'};
3011: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3012: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3013: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3014: $filename=~m{^/*(uploaded|editupload)/}) {
3015: return &repcopy_userfile($filename);
3016: }
3017: $filename=~s/[\n\r]//g;
3018: my $transname="$filename.in.transfer";
3019: # FIXME: this should flock
3020: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3021: my $remoteurl=subscribe($filename);
3022: if ($remoteurl =~ /^con_lost by/) {
3023: &logthis("Subscribe returned $remoteurl: $filename");
3024: return 'unavailable';
3025: } elsif ($remoteurl eq 'not_found') {
3026: #&logthis("Subscribe returned not_found: $filename");
3027: return 'not_found';
3028: } elsif ($remoteurl =~ /^rejected by/) {
3029: &logthis("Subscribe returned $remoteurl: $filename");
3030: return 'forbidden';
3031: } elsif ($remoteurl eq 'directory') {
3032: return 'ok';
3033: } else {
3034: my $author=$filename;
3035: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3036: my ($udom,$uname)=split(/\//,$author);
3037: my $home=homeserver($uname,$udom);
3038: unless ($home eq $perlvar{'lonHostID'}) {
3039: my @parts=split(/\//,$filename);
3040: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3041: if ($path ne "$londocroot/res") {
3042: &logthis("Malconfiguration for replication: $filename");
3043: return 'bad_request';
3044: }
3045: my $count;
3046: for ($count=5;$count<$#parts;$count++) {
3047: $path.="/$parts[$count]";
3048: if ((-e $path)!=1) {
3049: mkdir($path,0777);
3050: }
3051: }
3052: my $request=new HTTP::Request('GET',"$remoteurl");
3053: my $response;
3054: if ($remoteurl =~ m{/raw/}) {
3055: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3056: } else {
3057: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3058: }
3059: if ($response->is_error()) {
3060: unlink($transname);
3061: my $message=$response->status_line;
3062: &logthis("<font color=\"blue\">WARNING:"
3063: ." LWP get: $message: $filename</font>");
3064: return 'unavailable';
3065: } else {
3066: if ($remoteurl!~/\.meta$/) {
3067: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3068: my $mresponse;
3069: if ($remoteurl =~ m{/raw/}) {
3070: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3071: } else {
3072: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3073: }
3074: if ($mresponse->is_error()) {
3075: unlink($filename.'.meta');
3076: &logthis(
3077: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3078: }
3079: }
3080: rename($transname,$filename);
3081: return 'ok';
3082: }
3083: }
3084: }
3085: }
3086:
3087: # ------------------------------------------------ Get server side include body
3088: sub ssi_body {
3089: my ($filelink,%form)=@_;
3090: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3091: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3092: }
3093: my $output='';
3094: my $response;
3095: if ($filelink=~/^https?\:/) {
3096: ($output,$response)=&externalssi($filelink);
3097: } else {
3098: $filelink .= $filelink=~/\?/ ? '&' : '?';
3099: $filelink .= 'inhibitmenu=yes';
3100: ($output,$response)=&ssi($filelink,%form);
3101: }
3102: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3103: $output=~s/^.*?\<body[^\>]*\>//si;
3104: $output=~s/\<\/body\s*\>.*?$//si;
3105: if (wantarray) {
3106: return ($output, $response);
3107: } else {
3108: return $output;
3109: }
3110: }
3111:
3112: # --------------------------------------------------------- Server Side Include
3113:
3114: sub absolute_url {
3115: my ($host_name) = @_;
3116: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3117: if ($host_name eq '') {
3118: $host_name = $ENV{'SERVER_NAME'};
3119: }
3120: return $protocol.$host_name;
3121: }
3122:
3123: #
3124: # Server side include.
3125: # Parameters:
3126: # fn Possibly encrypted resource name/id.
3127: # form Hash that describes how the rendering should be done
3128: # and other things.
3129: # Returns:
3130: # Scalar context: The content of the response.
3131: # Array context: 2 element list of the content and the full response object.
3132: #
3133: sub ssi {
3134:
3135: my ($fn,%form)=@_;
3136: my $request;
3137:
3138: $form{'no_update_last_known'}=1;
3139: &Apache::lonenc::check_encrypt(\$fn);
3140: if (%form) {
3141: $request=new HTTP::Request('POST',&absolute_url().$fn);
3142: $request->content(join('&',map {
3143: my $name = escape($_);
3144: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3145: ? join("&$name=", map {escape($_) } @{$form{$_}})
3146: : &escape($form{$_}) );
3147: } keys(%form)));
3148: } else {
3149: $request=new HTTP::Request('GET',&absolute_url().$fn);
3150: }
3151:
3152: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3153: my $lonhost = $perlvar{'lonHostID'};
3154: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar);
3155:
3156: if (wantarray) {
3157: return ($response->content, $response);
3158: } else {
3159: return $response->content;
3160: }
3161: }
3162:
3163: sub externalssi {
3164: my ($url)=@_;
3165: my $request=new HTTP::Request('GET',$url);
3166: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3167: if (wantarray) {
3168: return ($response->content, $response);
3169: } else {
3170: return $response->content;
3171: }
3172: }
3173:
3174: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3175:
3176: sub allowuploaded {
3177: my ($srcurl,$url)=@_;
3178: $url=&clutter(&declutter($url));
3179: my $dir=$url;
3180: $dir=~s/\/[^\/]+$//;
3181: my %httpref=();
3182: my $httpurl=&hreflocation('',$url);
3183: $httpref{'httpref.'.$httpurl}=$srcurl;
3184: &Apache::lonnet::appenv(\%httpref);
3185: }
3186:
3187: #
3188: # Determine if the current user should be able to edit a particular resource,
3189: # when viewing in course context.
3190: # (a) When viewing resource used to determine if "Edit" item is included in
3191: # Functions.
3192: # (b) When displaying folder contents in course editor, used to determine if
3193: # "Edit" link will be displayed alongside resource.
3194: #
3195: # input: six args -- filename (decluttered), course number, course domain,
3196: # url, symb (if registered) and group (if this is a group
3197: # item -- e.g., bulletin board, group page etc.).
3198: # output: array of five scalars --
3199: # $cfile -- url for file editing if editable on current server
3200: # $home -- homeserver of resource (i.e., for author if published,
3201: # or course if uploaded.).
3202: # $switchserver -- 1 if server switch will be needed.
3203: # $forceedit -- 1 if icon/link should be to go to edit mode
3204: # $forceview -- 1 if icon/link should be to go to view mode
3205: #
3206:
3207: sub can_edit_resource {
3208: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3209: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3210: #
3211: # For aboutme pages user can only edit his/her own.
3212: #
3213: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3214: my ($sdom,$sname) = ($1,$2);
3215: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3216: $home = $env{'user.home'};
3217: $cfile = $resurl;
3218: if ($env{'form.forceedit'}) {
3219: $forceview = 1;
3220: } else {
3221: $forceedit = 1;
3222: }
3223: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3224: } else {
3225: return;
3226: }
3227: }
3228:
3229: if ($env{'request.course.id'}) {
3230: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3231: if ($group ne '') {
3232: # if this is a group homepage or group bulletin board, check group privs
3233: my $allowed = 0;
3234: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3235: if ((&allowed('mdg',$env{'request.course.id'}.
3236: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3237: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3238: $allowed = 1;
3239: }
3240: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3241: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3242: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3243: $allowed = 1;
3244: }
3245: }
3246: if ($allowed) {
3247: $home=&homeserver($cnum,$cdom);
3248: if ($env{'form.forceedit'}) {
3249: $forceview = 1;
3250: } else {
3251: $forceedit = 1;
3252: }
3253: $cfile = $resurl;
3254: } else {
3255: return;
3256: }
3257: } else {
3258: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3259: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3260: return;
3261: }
3262: } elsif (!$crsedit) {
3263: #
3264: # No edit allowed where CC has switched to student role.
3265: #
3266: return;
3267: }
3268: }
3269: }
3270:
3271: if ($file ne '') {
3272: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3273: if (&is_course_upload($file,$cnum,$cdom)) {
3274: $uploaded = 1;
3275: $incourse = 1;
3276: if ($file =~/\.(htm|html|css|js|txt)$/) {
3277: $cfile = &hreflocation('',$file);
3278: if ($env{'form.forceedit'}) {
3279: $forceview = 1;
3280: } else {
3281: $forceedit = 1;
3282: }
3283: }
3284: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3285: $incourse = 1;
3286: if ($env{'form.forceedit'}) {
3287: $forceview = 1;
3288: } else {
3289: $forceedit = 1;
3290: }
3291: $cfile = $resurl;
3292: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3293: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3294: $incourse = 1;
3295: if ($env{'form.forceedit'}) {
3296: $forceview = 1;
3297: } else {
3298: $forceedit = 1;
3299: }
3300: $cfile = $resurl;
3301: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3302: $incourse = 1;
3303: $cfile = $resurl.'/smpedit';
3304: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3305: $incourse = 1;
3306: if ($env{'form.forceedit'}) {
3307: $forceview = 1;
3308: } else {
3309: $forceedit = 1;
3310: }
3311: $cfile = $resurl;
3312: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3313: $incourse = 1;
3314: if ($env{'form.forceedit'}) {
3315: $forceview = 1;
3316: } else {
3317: $forceedit = 1;
3318: }
3319: $cfile = $resurl;
3320: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3321: $incourse = 1;
3322: if ($env{'form.forceedit'}) {
3323: $forceview = 1;
3324: } else {
3325: $forceedit = 1;
3326: }
3327: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3328: }
3329: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3330: my $template = '/res/lib/templates/simpleproblem.problem';
3331: if (&is_on_map($template)) {
3332: $incourse = 1;
3333: $forceview = 1;
3334: $cfile = $template;
3335: }
3336: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3337: $incourse = 1;
3338: if ($env{'form.forceedit'}) {
3339: $forceview = 1;
3340: } else {
3341: $forceedit = 1;
3342: }
3343: $cfile = $resurl;
3344: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3345: $incourse = 1;
3346: if ($env{'form.forceedit'}) {
3347: $forceview = 1;
3348: } else {
3349: $forceedit = 1;
3350: }
3351: $cfile = $resurl;
3352: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3353: $incourse = 1;
3354: $forceview = 1;
3355: if ($symb) {
3356: my ($map,$id,$res)=&decode_symb($symb);
3357: $env{'request.symb'} = $symb;
3358: $cfile = &clutter($res);
3359: } else {
3360: $cfile = $env{'form.suppurl'};
3361: my $escfile = &unescape($cfile);
3362: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3363: $cfile = '/adm/wrapper'.$escfile;
3364: } else {
3365: $escfile =~ s{^http://}{};
3366: $cfile = &escape("/adm/wrapper/ext/$escfile");
3367: }
3368: }
3369: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3370: if ($env{'form.forceedit'}) {
3371: $forceview = 1;
3372: } else {
3373: $forceedit = 1;
3374: }
3375: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3376: }
3377: }
3378: if ($uploaded || $incourse) {
3379: $home=&homeserver($cnum,$cdom);
3380: } elsif ($file !~ m{/$}) {
3381: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3382: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3383: # Check that the user has permission to edit this resource
3384: my $setpriv = 1;
3385: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3386: if (defined($cfudom)) {
3387: $home=&homeserver($cfuname,$cfudom);
3388: $cfile=$file;
3389: }
3390: }
3391: if (($cfile ne '') && (!$incourse || $uploaded) &&
3392: (($home ne '') && ($home ne 'no_host'))) {
3393: my @ids=¤t_machine_ids();
3394: unless (grep(/^\Q$home\E$/,@ids)) {
3395: $switchserver=1;
3396: }
3397: }
3398: }
3399: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3400: }
3401:
3402: sub is_course_upload {
3403: my ($file,$cnum,$cdom) = @_;
3404: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3405: $uploadpath =~ s{^\/}{};
3406: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3407: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3408: return 1;
3409: }
3410: return;
3411: }
3412:
3413: sub in_course {
3414: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3415: if ($hideprivileged) {
3416: my $skipuser;
3417: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3418: my @possdoms = ($cdom);
3419: if ($coursehash{'checkforpriv'}) {
3420: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3421: }
3422: if (&privileged($uname,$udom,\@possdoms)) {
3423: $skipuser = 1;
3424: if ($coursehash{'nothideprivileged'}) {
3425: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3426: my $user;
3427: if ($item =~ /:/) {
3428: $user = $item;
3429: } else {
3430: $user = join(':',split(/[\@]/,$item));
3431: }
3432: if ($user eq $uname.':'.$udom) {
3433: undef($skipuser);
3434: last;
3435: }
3436: }
3437: }
3438: if ($skipuser) {
3439: return 0;
3440: }
3441: }
3442: }
3443: $type ||= 'any';
3444: if (!defined($cdom) || !defined($cnum)) {
3445: my $cid = $env{'request.course.id'};
3446: $cdom = $env{'course.'.$cid.'.domain'};
3447: $cnum = $env{'course.'.$cid.'.num'};
3448: }
3449: my $typesref;
3450: if (($type eq 'any') || ($type eq 'all')) {
3451: $typesref = ['active','previous','future'];
3452: } elsif ($type eq 'previous' || $type eq 'future') {
3453: $typesref = [$type];
3454: }
3455: my %roles = &get_my_roles($uname,$udom,'userroles',
3456: $typesref,undef,[$cdom]);
3457: my ($tmp) = keys(%roles);
3458: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3459: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3460: if (@course_roles > 0) {
3461: return 1;
3462: }
3463: return 0;
3464: }
3465:
3466: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3467: # input: action, courseID, current domain, intended
3468: # path to file, source of file, instruction to parse file for objects,
3469: # ref to hash for embedded objects,
3470: # ref to hash for codebase of java objects.
3471: # reference to scalar to accommodate mime type determined
3472: # from File::MMagic if $parser = parse.
3473: #
3474: # output: url to file (if action was uploaddoc),
3475: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3476: #
3477: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3478: # course.
3479: #
3480: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3481: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3482: # course's home server.
3483: #
3484: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3485: # be copied from $source (current location) to
3486: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3487: # and will then be copied to
3488: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3489: # course's home server.
3490: #
3491: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3492: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3493: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3494: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3495: # in course's home server.
3496: #
3497:
3498: sub process_coursefile {
3499: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3500: $mimetype)=@_;
3501: my $fetchresult;
3502: my $home=&homeserver($docuname,$docudom);
3503: if ($action eq 'propagate') {
3504: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3505: $home);
3506: } else {
3507: my $fpath = '';
3508: my $fname = $file;
3509: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3510: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3511: my $filepath = &build_filepath($fpath);
3512: if ($action eq 'copy') {
3513: if ($source eq '') {
3514: $fetchresult = 'no source file';
3515: return $fetchresult;
3516: } else {
3517: my $destination = $filepath.'/'.$fname;
3518: rename($source,$destination);
3519: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3520: $home);
3521: }
3522: } elsif ($action eq 'uploaddoc') {
3523: open(my $fh,'>'.$filepath.'/'.$fname);
3524: print $fh $env{'form.'.$source};
3525: close($fh);
3526: if ($parser eq 'parse') {
3527: my $mm = new File::MMagic;
3528: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3529: if ($type eq 'text/html') {
3530: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3531: unless ($parse_result eq 'ok') {
3532: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3533: }
3534: }
3535: if (ref($mimetype)) {
3536: $$mimetype = $type;
3537: }
3538: }
3539: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3540: $home);
3541: if ($fetchresult eq 'ok') {
3542: return '/uploaded/'.$fpath.'/'.$fname;
3543: } else {
3544: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3545: ' to host '.$home.': '.$fetchresult);
3546: return '/adm/notfound.html';
3547: }
3548: }
3549: }
3550: unless ( $fetchresult eq 'ok') {
3551: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3552: ' to host '.$home.': '.$fetchresult);
3553: }
3554: return $fetchresult;
3555: }
3556:
3557: sub build_filepath {
3558: my ($fpath) = @_;
3559: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3560: unless ($fpath eq '') {
3561: my @parts=split('/',$fpath);
3562: foreach my $part (@parts) {
3563: $filepath.= '/'.$part;
3564: if ((-e $filepath)!=1) {
3565: mkdir($filepath,0777);
3566: }
3567: }
3568: }
3569: return $filepath;
3570: }
3571:
3572: sub store_edited_file {
3573: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3574: my $file = $primary_url;
3575: $file =~ s#^/uploaded/$docudom/$docuname/##;
3576: my $fpath = '';
3577: my $fname = $file;
3578: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3579: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3580: my $filepath = &build_filepath($fpath);
3581: open(my $fh,'>'.$filepath.'/'.$fname);
3582: print $fh $content;
3583: close($fh);
3584: my $home=&homeserver($docuname,$docudom);
3585: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3586: $home);
3587: if ($$fetchresult eq 'ok') {
3588: return '/uploaded/'.$fpath.'/'.$fname;
3589: } else {
3590: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3591: ' to host '.$home.': '.$$fetchresult);
3592: return '/adm/notfound.html';
3593: }
3594: }
3595:
3596: sub clean_filename {
3597: my ($fname,$args)=@_;
3598: # Replace Windows backslashes by forward slashes
3599: $fname=~s/\\/\//g;
3600: if (!$args->{'keep_path'}) {
3601: # Get rid of everything but the actual filename
3602: $fname=~s/^.*\/([^\/]+)$/$1/;
3603: }
3604: # Replace spaces by underscores
3605: $fname=~s/\s+/\_/g;
3606: # Replace all other weird characters by nothing
3607: $fname=~s{[^/\w\.\-]}{}g;
3608: # Replace all .\d. sequences with _\d. so they no longer look like version
3609: # numbers
3610: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3611: return $fname;
3612: }
3613: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3614: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3615: # image with the same aspect ratio as the original, but with dimensions which do
3616: # not exceed $resizewidth and $resizeheight.
3617:
3618: sub resizeImage {
3619: my ($img_path,$resizewidth,$resizeheight) = @_;
3620: my $ima = Image::Magick->new;
3621: my $resized;
3622: if (-e $img_path) {
3623: $ima->Read($img_path);
3624: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3625: my $width = $ima->Get('width');
3626: my $height = $ima->Get('height');
3627: if ($width > $resizewidth) {
3628: my $factor = $width/$resizewidth;
3629: my $newheight = $height/$factor;
3630: $ima->Scale(width=>$resizewidth,height=>$newheight);
3631: $resized = 1;
3632: }
3633: }
3634: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3635: my $width = $ima->Get('width');
3636: my $height = $ima->Get('height');
3637: if ($height > $resizeheight) {
3638: my $factor = $height/$resizeheight;
3639: my $newwidth = $width/$factor;
3640: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3641: $resized = 1;
3642: }
3643: }
3644: if ($resized) {
3645: $ima->Write($img_path);
3646: }
3647: }
3648: return;
3649: }
3650:
3651: # --------------- Take an uploaded file and put it into the userfiles directory
3652: # input: $formname - the contents of the file are in $env{"form.$formname"}
3653: # the desired filename is in $env{"form.$formname.filename"}
3654: # $context - possible values: coursedoc, existingfile, overwrite,
3655: # canceloverwrite, or ''.
3656: # if 'coursedoc': upload to the current course
3657: # if 'existingfile': write file to tmp/overwrites directory
3658: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3659: # $context is passed as argument to &finishuserfileupload
3660: # $subdir - directory in userfile to store the file into
3661: # $parser - instruction to parse file for objects ($parser = parse)
3662: # $allfiles - reference to hash for embedded objects
3663: # $codebase - reference to hash for codebase of java objects
3664: # $desuname - username for permanent storage of uploaded file
3665: # $dsetudom - domain for permanaent storage of uploaded file
3666: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3667: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3668: # $resizewidth - width (pixels) to which to resize uploaded image
3669: # $resizeheight - height (pixels) to which to resize uploaded image
3670: # $mimetype - reference to scalar to accommodate mime type determined
3671: # from File::MMagic.
3672: #
3673: # output: url of file in userspace, or error: <message>
3674: # or /adm/notfound.html if failure to upload occurse
3675:
3676: sub userfileupload {
3677: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3678: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3679: if (!defined($subdir)) { $subdir='unknown'; }
3680: my $fname=$env{'form.'.$formname.'.filename'};
3681: $fname=&clean_filename($fname);
3682: # See if there is anything left
3683: unless ($fname) { return 'error: no uploaded file'; }
3684: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3685: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3686: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3687: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3688: my $now = time;
3689: my $filepath;
3690: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3691: $filepath = 'tmp/helprequests/'.$now;
3692: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3693: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3694: '_'.$env{'user.domain'}.'/pending';
3695: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3696: my ($docuname,$docudom);
3697: if ($destudom) {
3698: $docudom = $destudom;
3699: } else {
3700: $docudom = $env{'user.domain'};
3701: }
3702: if ($destuname) {
3703: $docuname = $destuname;
3704: } else {
3705: $docuname = $env{'user.name'};
3706: }
3707: if (exists($env{'form.group'})) {
3708: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3709: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3710: }
3711: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3712: if ($context eq 'canceloverwrite') {
3713: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3714: if (-e $tempfile) {
3715: my @info = stat($tempfile);
3716: if ($info[9] eq $env{'form.timestamp'}) {
3717: unlink($tempfile);
3718: }
3719: }
3720: return;
3721: }
3722: }
3723: # Create the directory if not present
3724: my @parts=split(/\//,$filepath);
3725: my $fullpath = $perlvar{'lonDaemons'};
3726: for (my $i=0;$i<@parts;$i++) {
3727: $fullpath .= '/'.$parts[$i];
3728: if ((-e $fullpath)!=1) {
3729: mkdir($fullpath,0777);
3730: }
3731: }
3732: open(my $fh,'>'.$fullpath.'/'.$fname);
3733: print $fh $env{'form.'.$formname};
3734: close($fh);
3735: if ($context eq 'existingfile') {
3736: my @info = stat($fullpath.'/'.$fname);
3737: return ($fullpath.'/'.$fname,$info[9]);
3738: } else {
3739: return $fullpath.'/'.$fname;
3740: }
3741: }
3742: if ($subdir eq 'scantron') {
3743: $fname = 'scantron_orig_'.$fname;
3744: } else {
3745: $fname="$subdir/$fname";
3746: }
3747: if ($context eq 'coursedoc') {
3748: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3749: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3750: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3751: return &finishuserfileupload($docuname,$docudom,
3752: $formname,$fname,$parser,$allfiles,
3753: $codebase,$thumbwidth,$thumbheight,
3754: $resizewidth,$resizeheight,$context,$mimetype);
3755: } else {
3756: if ($env{'form.folder'}) {
3757: $fname=$env{'form.folder'}.'/'.$fname;
3758: }
3759: return &process_coursefile('uploaddoc',$docuname,$docudom,
3760: $fname,$formname,$parser,
3761: $allfiles,$codebase,$mimetype);
3762: }
3763: } elsif (defined($destuname)) {
3764: my $docuname=$destuname;
3765: my $docudom=$destudom;
3766: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3767: $parser,$allfiles,$codebase,
3768: $thumbwidth,$thumbheight,
3769: $resizewidth,$resizeheight,$context,$mimetype);
3770: } else {
3771: my $docuname=$env{'user.name'};
3772: my $docudom=$env{'user.domain'};
3773: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3774: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3775: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3776: }
3777: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3778: $parser,$allfiles,$codebase,
3779: $thumbwidth,$thumbheight,
3780: $resizewidth,$resizeheight,$context,$mimetype);
3781: }
3782: }
3783:
3784: sub finishuserfileupload {
3785: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3786: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3787: my $path=$docudom.'/'.$docuname.'/';
3788: my $filepath=$perlvar{'lonDocRoot'};
3789:
3790: my ($fnamepath,$file,$fetchthumb);
3791: $file=$fname;
3792: if ($fname=~m|/|) {
3793: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3794: $path.=$fnamepath.'/';
3795: }
3796: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3797: my $count;
3798: for ($count=4;$count<=$#parts;$count++) {
3799: $filepath.="/$parts[$count]";
3800: if ((-e $filepath)!=1) {
3801: mkdir($filepath,0777);
3802: }
3803: }
3804:
3805: # Save the file
3806: {
3807: if (!open(FH,'>'.$filepath.'/'.$file)) {
3808: &logthis('Failed to create '.$filepath.'/'.$file);
3809: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3810: return '/adm/notfound.html';
3811: }
3812: if ($context eq 'overwrite') {
3813: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3814: my $target = $filepath.'/'.$file;
3815: if (-e $source) {
3816: my @info = stat($source);
3817: if ($info[9] eq $env{'form.timestamp'}) {
3818: unless (&File::Copy::move($source,$target)) {
3819: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3820: return "Moving from $source failed";
3821: }
3822: } else {
3823: return "Temporary file: $source had unexpected date/time for last modification";
3824: }
3825: } else {
3826: return "Temporary file: $source missing";
3827: }
3828: } elsif (!print FH ($env{'form.'.$formname})) {
3829: &logthis('Failed to write to '.$filepath.'/'.$file);
3830: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3831: return '/adm/notfound.html';
3832: }
3833: close(FH);
3834: if ($resizewidth && $resizeheight) {
3835: my $mm = new File::MMagic;
3836: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3837: if ($mime_type =~ m{^image/}) {
3838: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3839: }
3840: }
3841: }
3842: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3843: if (ref($mimetype)) {
3844: if ($$mimetype eq '') {
3845: my $mm = new File::MMagic;
3846: my $type = $mm->checktype_filename($filepath.'/'.$file);
3847: $$mimetype = $type;
3848: }
3849: }
3850: }
3851: if ($parser eq 'parse') {
3852: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3853: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3854: $allfiles,$codebase);
3855: unless ($parse_result eq 'ok') {
3856: &logthis('Failed to parse '.$filepath.$file.
3857: ' for embedded media: '.$parse_result);
3858: }
3859: }
3860: }
3861: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3862: my $input = $filepath.'/'.$file;
3863: my $output = $filepath.'/'.'tn-'.$file;
3864: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3865: system("convert -sample $thumbsize $input $output");
3866: if (-e $filepath.'/'.'tn-'.$file) {
3867: $fetchthumb = 1;
3868: }
3869: }
3870:
3871: # Notify homeserver to grep it
3872: #
3873: my $docuhome=&homeserver($docuname,$docudom);
3874: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3875: if ($fetchresult eq 'ok') {
3876: if ($fetchthumb) {
3877: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3878: if ($thumbresult ne 'ok') {
3879: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3880: $docuhome.': '.$thumbresult);
3881: }
3882: }
3883: #
3884: # Return the URL to it
3885: return '/uploaded/'.$path.$file;
3886: } else {
3887: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3888: ': '.$fetchresult);
3889: return '/adm/notfound.html';
3890: }
3891: }
3892:
3893: sub extract_embedded_items {
3894: my ($fullpath,$allfiles,$codebase,$content) = @_;
3895: my @state = ();
3896: my (%lastids,%related,%shockwave,%flashvars);
3897: my %javafiles = (
3898: codebase => '',
3899: code => '',
3900: archive => ''
3901: );
3902: my %mediafiles = (
3903: src => '',
3904: movie => '',
3905: );
3906: my $p;
3907: if ($content) {
3908: $p = HTML::LCParser->new($content);
3909: } else {
3910: $p = HTML::LCParser->new($fullpath);
3911: }
3912: while (my $t=$p->get_token()) {
3913: if ($t->[0] eq 'S') {
3914: my ($tagname, $attr) = ($t->[1],$t->[2]);
3915: push(@state, $tagname);
3916: if (lc($tagname) eq 'allow') {
3917: &add_filetype($allfiles,$attr->{'src'},'src');
3918: }
3919: if (lc($tagname) eq 'img') {
3920: &add_filetype($allfiles,$attr->{'src'},'src');
3921: }
3922: if (lc($tagname) eq 'a') {
3923: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3924: &add_filetype($allfiles,$attr->{'href'},'href');
3925: }
3926: }
3927: if (lc($tagname) eq 'script') {
3928: my $src;
3929: if ($attr->{'archive'} =~ /\.jar$/i) {
3930: &add_filetype($allfiles,$attr->{'archive'},'archive');
3931: } else {
3932: if ($attr->{'src'} ne '') {
3933: $src = $attr->{'src'};
3934: &add_filetype($allfiles,$src,'src');
3935: }
3936: }
3937: my $text = $p->get_trimmed_text();
3938: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3939: my @swfargs = split(/,/,$1);
3940: foreach my $item (@swfargs) {
3941: $item =~ s/["']//g;
3942: $item =~ s/^\s+//;
3943: $item =~ s/\s+$//;
3944: }
3945: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3946: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3947: push(@{$related{$swfargs[0]}},$swfargs[2]);
3948: } else {
3949: $related{$swfargs[0]} = [$swfargs[2]];
3950: }
3951: }
3952: }
3953: }
3954: if (lc($tagname) eq 'link') {
3955: if (lc($attr->{'rel'}) eq 'stylesheet') {
3956: &add_filetype($allfiles,$attr->{'href'},'href');
3957: }
3958: }
3959: if (lc($tagname) eq 'object' ||
3960: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3961: foreach my $item (keys(%javafiles)) {
3962: $javafiles{$item} = '';
3963: }
3964: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3965: $lastids{lc($tagname)} = $attr->{'id'};
3966: }
3967: }
3968: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3969: my $name = lc($attr->{'name'});
3970: foreach my $item (keys(%javafiles)) {
3971: if ($name eq $item) {
3972: $javafiles{$item} = $attr->{'value'};
3973: last;
3974: }
3975: }
3976: my $pathfrom;
3977: foreach my $item (keys(%mediafiles)) {
3978: if ($name eq $item) {
3979: $pathfrom = $attr->{'value'};
3980: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3981: &add_filetype($allfiles,$pathfrom,$name);
3982: last;
3983: }
3984: }
3985: if ($name eq 'flashvars') {
3986: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3987: }
3988: if ($pathfrom ne '') {
3989: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3990: $pathfrom);
3991: }
3992: }
3993: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3994: foreach my $item (keys(%javafiles)) {
3995: if ($attr->{$item}) {
3996: $javafiles{$item} = $attr->{$item};
3997: last;
3998: }
3999: }
4000: foreach my $item (keys(%mediafiles)) {
4001: if ($attr->{$item}) {
4002: &add_filetype($allfiles,$attr->{$item},$item);
4003: last;
4004: }
4005: }
4006: if (lc($tagname) eq 'embed') {
4007: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4008: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4009: $attr->{'src'});
4010: }
4011: }
4012: }
4013: if (lc($tagname) eq 'iframe') {
4014: my $src = $attr->{'src'} ;
4015: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4016: &add_filetype($allfiles,$src,'src');
4017: } elsif ($src =~ m{^/}) {
4018: if ($env{'request.course.id'}) {
4019: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4020: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4021: my $url = &hreflocation('',$fullpath);
4022: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4023: my $relpath = $1;
4024: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4025: &add_filetype($allfiles,$1,'src');
4026: }
4027: }
4028: }
4029: }
4030: }
4031: if ($t->[4] =~ m{/>$}) {
4032: pop(@state);
4033: }
4034: } elsif ($t->[0] eq 'E') {
4035: my ($tagname) = ($t->[1]);
4036: if ($javafiles{'codebase'} ne '') {
4037: $javafiles{'codebase'} .= '/';
4038: }
4039: if (lc($tagname) eq 'applet' ||
4040: lc($tagname) eq 'object' ||
4041: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4042: ) {
4043: foreach my $item (keys(%javafiles)) {
4044: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4045: my $file=$javafiles{'codebase'}.$javafiles{$item};
4046: &add_filetype($allfiles,$file,$item);
4047: }
4048: }
4049: }
4050: pop @state;
4051: }
4052: }
4053: foreach my $id (sort(keys(%flashvars))) {
4054: if ($shockwave{$id} ne '') {
4055: my @pairs = split(/\&/,$flashvars{$id});
4056: foreach my $pair (@pairs) {
4057: my ($key,$value) = split(/\=/,$pair);
4058: if ($key eq 'thumb') {
4059: &add_filetype($allfiles,$value,$key);
4060: } elsif ($key eq 'content') {
4061: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4062: my ($ext) = ($value =~ /\.([^.]+)$/);
4063: if ($ext ne '') {
4064: &add_filetype($allfiles,$path.$value,$ext);
4065: }
4066: }
4067: }
4068: }
4069: }
4070: return 'ok';
4071: }
4072:
4073: sub add_filetype {
4074: my ($allfiles,$file,$type)=@_;
4075: if (exists($allfiles->{$file})) {
4076: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4077: push(@{$allfiles->{$file}}, &escape($type));
4078: }
4079: } else {
4080: @{$allfiles->{$file}} = (&escape($type));
4081: }
4082: }
4083:
4084: sub embedded_dependency {
4085: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4086: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4087: if (($identifier ne '') &&
4088: (ref($related->{$identifier}) eq 'ARRAY') &&
4089: ($pathfrom ne '')) {
4090: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4091: foreach my $dep (@{$related->{$identifier}}) {
4092: &add_filetype($allfiles,$path.$dep,'object');
4093: }
4094: }
4095: }
4096: return;
4097: }
4098:
4099: sub removeuploadedurl {
4100: my ($url)=@_;
4101: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4102: return &removeuserfile($uname,$udom,$fname);
4103: }
4104:
4105: sub removeuserfile {
4106: my ($docuname,$docudom,$fname)=@_;
4107: my $home=&homeserver($docuname,$docudom);
4108: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4109: if ($result eq 'ok') {
4110: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4111: my $metafile = $fname.'.meta';
4112: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4113: my $url = "/uploaded/$docudom/$docuname/$fname";
4114: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4115: my $sqlresult =
4116: &update_portfolio_table($docuname,$docudom,$file,
4117: 'portfolio_metadata',$group,
4118: 'delete');
4119: }
4120: }
4121: return $result;
4122: }
4123:
4124: sub mkdiruserfile {
4125: my ($docuname,$docudom,$dir)=@_;
4126: my $home=&homeserver($docuname,$docudom);
4127: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4128: }
4129:
4130: sub renameuserfile {
4131: my ($docuname,$docudom,$old,$new)=@_;
4132: my $home=&homeserver($docuname,$docudom);
4133: my $result = &reply("renameuserfile:$docudom:$docuname:".
4134: &escape("$old").':'.&escape("$new"),$home);
4135: if ($result eq 'ok') {
4136: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4137: my $oldmeta = $old.'.meta';
4138: my $newmeta = $new.'.meta';
4139: my $metaresult =
4140: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4141: my $url = "/uploaded/$docudom/$docuname/$old";
4142: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4143: my $sqlresult =
4144: &update_portfolio_table($docuname,$docudom,$file,
4145: 'portfolio_metadata',$group,
4146: 'delete');
4147: }
4148: }
4149: return $result;
4150: }
4151:
4152: # ------------------------------------------------------------------------- Log
4153:
4154: sub log {
4155: my ($dom,$nam,$hom,$what)=@_;
4156: return critical("log:$dom:$nam:$what",$hom);
4157: }
4158:
4159: # ------------------------------------------------------------------ Course Log
4160: #
4161: # This routine flushes several buffers of non-mission-critical nature
4162: #
4163:
4164: sub flushcourselogs {
4165: &logthis('Flushing log buffers');
4166: #
4167: # course logs
4168: # This is a log of all transactions in a course, which can be used
4169: # for data mining purposes
4170: #
4171: # It also collects the courseid database, which lists last transaction
4172: # times and course titles for all courseids
4173: #
4174: my %courseidbuffer=();
4175: foreach my $crsid (keys(%courselogs)) {
4176: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4177: &escape($courselogs{$crsid}),
4178: $coursehombuf{$crsid}) eq 'ok') {
4179: delete $courselogs{$crsid};
4180: } else {
4181: &logthis('Failed to flush log buffer for '.$crsid);
4182: if (length($courselogs{$crsid})>40000) {
4183: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4184: " exceeded maximum size, deleting.</font>");
4185: delete $courselogs{$crsid};
4186: }
4187: }
4188: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4189: 'description' => $coursedescrbuf{$crsid},
4190: 'inst_code' => $courseinstcodebuf{$crsid},
4191: 'type' => $coursetypebuf{$crsid},
4192: 'owner' => $courseownerbuf{$crsid},
4193: };
4194: }
4195: #
4196: # Write course id database (reverse lookup) to homeserver of courses
4197: # Is used in pickcourse
4198: #
4199: foreach my $crs_home (keys(%courseidbuffer)) {
4200: my $response = &courseidput(&host_domain($crs_home),
4201: $courseidbuffer{$crs_home},
4202: $crs_home,'timeonly');
4203: }
4204: #
4205: # File accesses
4206: # Writes to the dynamic metadata of resources to get hit counts, etc.
4207: #
4208: foreach my $entry (keys(%accesshash)) {
4209: if ($entry =~ /___count$/) {
4210: my ($dom,$name);
4211: ($dom,$name,undef)=
4212: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4213: if (! defined($dom) || $dom eq '' ||
4214: ! defined($name) || $name eq '') {
4215: my $cid = $env{'request.course.id'};
4216: $dom = $env{'request.'.$cid.'.domain'};
4217: $name = $env{'request.'.$cid.'.num'};
4218: }
4219: my $value = $accesshash{$entry};
4220: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4221: my %temphash=($url => $value);
4222: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4223: if ($result eq 'ok') {
4224: delete $accesshash{$entry};
4225: }
4226: } else {
4227: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4228: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4229: my %temphash=($entry => $accesshash{$entry});
4230: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4231: delete $accesshash{$entry};
4232: }
4233: }
4234: }
4235: #
4236: # Roles
4237: # Reverse lookup of user roles for course faculty/staff and co-authorship
4238: #
4239: foreach my $entry (keys(%userrolehash)) {
4240: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4241: split(/\:/,$entry);
4242: if (&Apache::lonnet::put('nohist_userroles',
4243: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4244: $rudom,$runame) eq 'ok') {
4245: delete $userrolehash{$entry};
4246: }
4247: }
4248: #
4249: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4250: #
4251: my %domrolebuffer = ();
4252: foreach my $entry (keys(%domainrolehash)) {
4253: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4254: if ($domrolebuffer{$rudom}) {
4255: $domrolebuffer{$rudom}.='&'.&escape($entry).
4256: '='.&escape($domainrolehash{$entry});
4257: } else {
4258: $domrolebuffer{$rudom}.=&escape($entry).
4259: '='.&escape($domainrolehash{$entry});
4260: }
4261: delete $domainrolehash{$entry};
4262: }
4263: foreach my $dom (keys(%domrolebuffer)) {
4264: my %servers;
4265: if (defined(&domain($dom,'primary'))) {
4266: my $primary=&domain($dom,'primary');
4267: my $hostname=&hostname($primary);
4268: $servers{$primary} = $hostname;
4269: } else {
4270: %servers = &get_servers($dom,'library');
4271: }
4272: foreach my $tryserver (keys(%servers)) {
4273: if (&reply('domroleput:'.$dom.':'.
4274: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4275: last;
4276: } else {
4277: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4278: }
4279: }
4280: }
4281: $dumpcount++;
4282: }
4283:
4284: sub courselog {
4285: my $what=shift;
4286: $what=time.':'.$what;
4287: unless ($env{'request.course.id'}) { return ''; }
4288: $coursedombuf{$env{'request.course.id'}}=
4289: $env{'course.'.$env{'request.course.id'}.'.domain'};
4290: $coursenumbuf{$env{'request.course.id'}}=
4291: $env{'course.'.$env{'request.course.id'}.'.num'};
4292: $coursehombuf{$env{'request.course.id'}}=
4293: $env{'course.'.$env{'request.course.id'}.'.home'};
4294: $coursedescrbuf{$env{'request.course.id'}}=
4295: $env{'course.'.$env{'request.course.id'}.'.description'};
4296: $courseinstcodebuf{$env{'request.course.id'}}=
4297: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4298: $courseownerbuf{$env{'request.course.id'}}=
4299: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4300: $coursetypebuf{$env{'request.course.id'}}=
4301: $env{'course.'.$env{'request.course.id'}.'.type'};
4302: if (defined $courselogs{$env{'request.course.id'}}) {
4303: $courselogs{$env{'request.course.id'}}.='&'.$what;
4304: } else {
4305: $courselogs{$env{'request.course.id'}}.=$what;
4306: }
4307: if (length($courselogs{$env{'request.course.id'}})>4048) {
4308: &flushcourselogs();
4309: }
4310: }
4311:
4312: sub courseacclog {
4313: my $fnsymb=shift;
4314: unless ($env{'request.course.id'}) { return ''; }
4315: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4316: if ($fnsymb=~/$LONCAPA::assess_re/) {
4317: $what.=':POST';
4318: # FIXME: Probably ought to escape things....
4319: foreach my $key (keys(%env)) {
4320: if ($key=~/^form\.(.*)/) {
4321: my $formitem = $1;
4322: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4323: $what.=':'.$formitem.'='.$env{$key};
4324: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4325: $what.=':'.$formitem.'='.$env{$key};
4326: }
4327: }
4328: }
4329: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4330: # FIXME: We should not be depending on a form parameter that someone
4331: # editing lonsearchcat.pm might change in the future.
4332: if ($env{'form.phase'} eq 'course_search') {
4333: $what.= ':POST';
4334: # FIXME: Probably ought to escape things....
4335: foreach my $element ('courseexp','crsfulltext','crsrelated',
4336: 'crsdiscuss') {
4337: $what.=':'.$element.'='.$env{'form.'.$element};
4338: }
4339: }
4340: }
4341: &courselog($what);
4342: }
4343:
4344: sub countacc {
4345: my $url=&declutter(shift);
4346: return if (! defined($url) || $url eq '');
4347: unless ($env{'request.course.id'}) { return ''; }
4348: #
4349: # Mark that this url was used in this course
4350: #
4351: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4352: #
4353: # Increase the access count for this resource in this child process
4354: #
4355: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4356: $accesshash{$key}++;
4357: }
4358:
4359: sub linklog {
4360: my ($from,$to)=@_;
4361: $from=&declutter($from);
4362: $to=&declutter($to);
4363: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4364: $accesshash{$to.'___'.$from.'___goto'}=1;
4365: }
4366:
4367: sub statslog {
4368: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4369: if ($users<2) { return; }
4370: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4371: 'course' => $env{'request.course.id'},
4372: 'sections' => '"all"',
4373: 'num_students' => $users,
4374: 'part' => $part,
4375: 'symb' => $symb,
4376: 'mean_tries' => $av_attempts,
4377: 'deg_of_diff' => $degdiff});
4378: foreach my $key (keys(%dynstore)) {
4379: $accesshash{$key}=$dynstore{$key};
4380: }
4381: }
4382:
4383: sub userrolelog {
4384: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4385: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4386: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4387: $userrolehash
4388: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4389: =$tend.':'.$tstart;
4390: }
4391: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4392: $userrolehash
4393: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4394: =$tend.':'.$tstart;
4395: }
4396: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4397: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4398: $domainrolehash
4399: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4400: = $tend.':'.$tstart;
4401: }
4402: }
4403:
4404: sub courserolelog {
4405: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4406: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4407: my $cdom = $1;
4408: my $cnum = $2;
4409: my $sec = $3;
4410: my $namespace = 'rolelog';
4411: my %storehash = (
4412: role => $trole,
4413: start => $tstart,
4414: end => $tend,
4415: selfenroll => $selfenroll,
4416: context => $context,
4417: );
4418: if ($trole eq 'gr') {
4419: $namespace = 'groupslog';
4420: $storehash{'group'} = $sec;
4421: } else {
4422: $storehash{'section'} = $sec;
4423: }
4424: &write_log('course',$namespace,\%storehash,$delflag,$username,
4425: $domain,$cnum,$cdom);
4426: if (($trole ne 'st') || ($sec ne '')) {
4427: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4428: }
4429: }
4430: return;
4431: }
4432:
4433: sub domainrolelog {
4434: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4435: if ($area =~ m{^/($match_domain)/$}) {
4436: my $cdom = $1;
4437: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4438: my $namespace = 'rolelog';
4439: my %storehash = (
4440: role => $trole,
4441: start => $tstart,
4442: end => $tend,
4443: context => $context,
4444: );
4445: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4446: $domain,$domconfiguser,$cdom);
4447: }
4448: return;
4449:
4450: }
4451:
4452: sub coauthorrolelog {
4453: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4454: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4455: my $audom = $1;
4456: my $auname = $2;
4457: my $namespace = 'rolelog';
4458: my %storehash = (
4459: role => $trole,
4460: start => $tstart,
4461: end => $tend,
4462: context => $context,
4463: );
4464: &write_log('author',$namespace,\%storehash,$delflag,$username,
4465: $domain,$auname,$audom);
4466: }
4467: return;
4468: }
4469:
4470: sub get_course_adv_roles {
4471: my ($cid,$codes) = @_;
4472: $cid=$env{'request.course.id'} unless (defined($cid));
4473: my %coursehash=&coursedescription($cid);
4474: my $crstype = &Apache::loncommon::course_type($cid);
4475: my %nothide=();
4476: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4477: if ($user !~ /:/) {
4478: $nothide{join(':',split(/[\@]/,$user))}=1;
4479: } else {
4480: $nothide{$user}=1;
4481: }
4482: }
4483: my @possdoms = ($coursehash{'domain'});
4484: if ($coursehash{'checkforpriv'}) {
4485: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4486: }
4487: my %returnhash=();
4488: my %dumphash=
4489: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4490: my $now=time;
4491: my %privileged;
4492: foreach my $entry (keys(%dumphash)) {
4493: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4494: if (($tstart) && ($tstart<0)) { next; }
4495: if (($tend) && ($tend<$now)) { next; }
4496: if (($tstart) && ($now<$tstart)) { next; }
4497: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4498: if ($username eq '' || $domain eq '') { next; }
4499: if ((&privileged($username,$domain,\@possdoms)) &&
4500: (!$nothide{$username.':'.$domain})) { next; }
4501: if ($role eq 'cr') { next; }
4502: if ($codes) {
4503: if ($section) { $role .= ':'.$section; }
4504: if ($returnhash{$role}) {
4505: $returnhash{$role}.=','.$username.':'.$domain;
4506: } else {
4507: $returnhash{$role}=$username.':'.$domain;
4508: }
4509: } else {
4510: my $key=&plaintext($role,$crstype);
4511: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4512: if ($returnhash{$key}) {
4513: $returnhash{$key}.=','.$username.':'.$domain;
4514: } else {
4515: $returnhash{$key}=$username.':'.$domain;
4516: }
4517: }
4518: }
4519: return %returnhash;
4520: }
4521:
4522: sub get_my_roles {
4523: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4524: unless (defined($uname)) { $uname=$env{'user.name'}; }
4525: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4526: my (%dumphash,%nothide);
4527: if ($context eq 'userroles') {
4528: %dumphash = &dump('roles',$udom,$uname);
4529: } else {
4530: %dumphash = &dump('nohist_userroles',$udom,$uname);
4531: if ($hidepriv) {
4532: my %coursehash=&coursedescription($udom.'_'.$uname);
4533: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4534: if ($user !~ /:/) {
4535: $nothide{join(':',split(/[\@]/,$user))} = 1;
4536: } else {
4537: $nothide{$user} = 1;
4538: }
4539: }
4540: }
4541: }
4542: my %returnhash=();
4543: my $now=time;
4544: my %privileged;
4545: foreach my $entry (keys(%dumphash)) {
4546: my ($role,$tend,$tstart);
4547: if ($context eq 'userroles') {
4548: next if ($entry =~ /^rolesdef/);
4549: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4550: } else {
4551: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4552: }
4553: if (($tstart) && ($tstart<0)) { next; }
4554: my $status = 'active';
4555: if (($tend) && ($tend<=$now)) {
4556: $status = 'previous';
4557: }
4558: if (($tstart) && ($now<$tstart)) {
4559: $status = 'future';
4560: }
4561: if (ref($types) eq 'ARRAY') {
4562: if (!grep(/^\Q$status\E$/,@{$types})) {
4563: next;
4564: }
4565: } else {
4566: if ($status ne 'active') {
4567: next;
4568: }
4569: }
4570: my ($rolecode,$username,$domain,$section,$area);
4571: if ($context eq 'userroles') {
4572: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4573: (undef,$domain,$username,$section) = split(/\//,$area);
4574: } else {
4575: ($role,$username,$domain,$section) = split(/\:/,$entry);
4576: }
4577: if (ref($roledoms) eq 'ARRAY') {
4578: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4579: next;
4580: }
4581: }
4582: if (ref($roles) eq 'ARRAY') {
4583: if (!grep(/^\Q$role\E$/,@{$roles})) {
4584: if ($role =~ /^cr\//) {
4585: if (!grep(/^cr$/,@{$roles})) {
4586: next;
4587: }
4588: } elsif ($role =~ /^gr\//) {
4589: if (!grep(/^gr$/,@{$roles})) {
4590: next;
4591: }
4592: } else {
4593: next;
4594: }
4595: }
4596: }
4597: if ($hidepriv) {
4598: my @privroles = ('dc','su');
4599: if ($context eq 'userroles') {
4600: next if (grep(/^\Q$role\E$/,@privroles));
4601: } else {
4602: my $possdoms = [$domain];
4603: if (ref($roledoms) eq 'ARRAY') {
4604: push(@{$possdoms},@{$roledoms});
4605: }
4606: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4607: if (!$nothide{$username.':'.$domain}) {
4608: next;
4609: }
4610: }
4611: }
4612: }
4613: if ($withsec) {
4614: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4615: $tstart.':'.$tend;
4616: } else {
4617: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4618: }
4619: }
4620: return %returnhash;
4621: }
4622:
4623: sub get_all_adhocroles {
4624: my ($dom) = @_;
4625: my @roles_by_num = ();
4626: my %domdefaults = &get_domain_defaults($dom);
4627: my (%description,%access_in_dom,%access_info);
4628: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4629: my $count = 0;
4630: my %domcurrent = %{$domdefaults{'adhocroles'}};
4631: my %ordered;
4632: foreach my $role (sort(keys(%domcurrent))) {
4633: my ($order,$desc,$access_in_dom);
4634: if (ref($domcurrent{$role}) eq 'HASH') {
4635: $order = $domcurrent{$role}{'order'};
4636: $desc = $domcurrent{$role}{'desc'};
4637: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4638: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4639: }
4640: if ($order eq '') {
4641: $order = $count;
4642: }
4643: $ordered{$order} = $role;
4644: if ($desc ne '') {
4645: $description{$role} = $desc;
4646: } else {
4647: $description{$role}= $role;
4648: }
4649: $count++;
4650: }
4651: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4652: push(@roles_by_num,$ordered{$item});
4653: }
4654: }
4655: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4656: }
4657:
4658: sub get_my_adhocroles {
4659: my ($cid,$checkreg) = @_;
4660: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4661: if ($env{'request.course.id'} eq $cid) {
4662: $cdom = $env{'course.'.$cid.'.domain'};
4663: $cnum = $env{'course.'.$cid.'.num'};
4664: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4665: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4666: $cdom = $1;
4667: $cnum = $2;
4668: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4669: $cdom,$cnum);
4670: }
4671: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4672: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4673: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4674: if ($rosterhash{$user} ne '') {
4675: my $type = (split(/:/,$rosterhash{$user}))[5];
4676: return ([],{}) if ($type eq 'auto');
4677: }
4678: }
4679: if (($cdom ne '') && ($cnum ne '')) {
4680: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4681: my $then=$env{'user.login.time'};
4682: my $update=$env{'user.update.time'};
4683: if (!$update) {
4684: $update = $then;
4685: }
4686: my @liveroles;
4687: foreach my $role ('dh','da') {
4688: if ($env{"user.role.$role./$cdom/"}) {
4689: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4690: my $limit = $update;
4691: if ($env{'request.role'} eq "$role./$cdom/") {
4692: $limit = $then;
4693: }
4694: my $activerole = 1;
4695: if ($tstart && $tstart>$limit) { $activerole = 0; }
4696: if ($tend && $tend <$limit) { $activerole = 0; }
4697: if ($activerole) {
4698: push(@liveroles,$role);
4699: }
4700: }
4701: }
4702: if (@liveroles) {
4703: if (&homeserver($cnum,$cdom) ne 'no_host') {
4704: my ($accessref,$accessinfo,%access_in_dom);
4705: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4706: if (ref($roles_by_num) eq 'ARRAY') {
4707: if (@{$roles_by_num}) {
4708: my %settings;
4709: if ($env{'request.course.id'} eq $cid) {
4710: foreach my $envkey (keys(%env)) {
4711: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4712: $settings{$1} = $env{$envkey};
4713: }
4714: }
4715: } else {
4716: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4717: }
4718: my %setincrs;
4719: if ($settings{'internal.adhocaccess'}) {
4720: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4721: }
4722: my @statuses;
4723: if ($env{'environment.inststatus'}) {
4724: @statuses = split(/,/,$env{'environment.inststatus'});
4725: }
4726: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4727: if (ref($accessref) eq 'HASH') {
4728: %access_in_dom = %{$accessref};
4729: }
4730: foreach my $role (@{$roles_by_num}) {
4731: my ($curraccess,@okstatus,@personnel);
4732: if ($setincrs{$role}) {
4733: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4734: if ($curraccess eq 'status') {
4735: @okstatus = split(/\&/,$rest);
4736: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4737: @personnel = split(/\&/,$rest);
4738: }
4739: } else {
4740: $curraccess = $access_in_dom{$role};
4741: if (ref($accessinfo) eq 'HASH') {
4742: if ($curraccess eq 'status') {
4743: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4744: @okstatus = @{$accessinfo->{$role}};
4745: }
4746: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4747: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4748: @personnel = @{$accessinfo->{$role}};
4749: }
4750: }
4751: }
4752: }
4753: if ($curraccess eq 'none') {
4754: next;
4755: } elsif ($curraccess eq 'all') {
4756: push(@possroles,$role);
4757: } elsif ($curraccess eq 'dh') {
4758: if (grep(/^dh$/,@liveroles)) {
4759: push(@possroles,$role);
4760: } else {
4761: next;
4762: }
4763: } elsif ($curraccess eq 'da') {
4764: if (grep(/^da$/,@liveroles)) {
4765: push(@possroles,$role);
4766: } else {
4767: next;
4768: }
4769: } elsif ($curraccess eq 'status') {
4770: if (@okstatus) {
4771: if (!@statuses) {
4772: if (grep(/^default$/,@okstatus)) {
4773: push(@possroles,$role);
4774: }
4775: } else {
4776: foreach my $status (@okstatus) {
4777: if (grep(/^\Q$status\E$/,@statuses)) {
4778: push(@possroles,$role);
4779: last;
4780: }
4781: }
4782: }
4783: }
4784: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4785: if (grep(/^\Q$user\E$/,@personnel)) {
4786: if ($curraccess eq 'exc') {
4787: push(@possroles,$role);
4788: }
4789: } elsif ($curraccess eq 'inc') {
4790: push(@possroles,$role);
4791: }
4792: }
4793: }
4794: }
4795: }
4796: }
4797: }
4798: }
4799: }
4800: unless (ref($description) eq 'HASH') {
4801: if (ref($roles_by_num) eq 'ARRAY') {
4802: my %desc;
4803: map { $desc{$_} = $_; } (@{$roles_by_num});
4804: $description = \%desc;
4805: } else {
4806: $description = {};
4807: }
4808: }
4809: return (\@possroles,$description);
4810: }
4811:
4812: # ----------------------------------------------------- Frontpage Announcements
4813: #
4814: #
4815:
4816: sub postannounce {
4817: my ($server,$text)=@_;
4818: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4819: unless ($text=~/\w/) { $text=''; }
4820: return &reply('setannounce:'.&escape($text),$server);
4821: }
4822:
4823: sub getannounce {
4824:
4825: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4826: my $announcement='';
4827: while (my $line = <$fh>) { $announcement .= $line; }
4828: close($fh);
4829: if ($announcement=~/\w/) {
4830: return
4831: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4832: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4833: } else {
4834: return '';
4835: }
4836: } else {
4837: return '';
4838: }
4839: }
4840:
4841: # ---------------------------------------------------------- Course ID routines
4842: # Deal with domain's nohist_courseid.db files
4843: #
4844:
4845: sub courseidput {
4846: my ($domain,$storehash,$coursehome,$caller) = @_;
4847: return unless (ref($storehash) eq 'HASH');
4848: my $outcome;
4849: if ($caller eq 'timeonly') {
4850: my $cids = '';
4851: foreach my $item (keys(%$storehash)) {
4852: $cids.=&escape($item).'&';
4853: }
4854: $cids=~s/\&$//;
4855: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4856: $coursehome);
4857: } else {
4858: my $items = '';
4859: foreach my $item (keys(%$storehash)) {
4860: $items.= &escape($item).'='.
4861: &freeze_escape($$storehash{$item}).'&';
4862: }
4863: $items=~s/\&$//;
4864: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4865: $coursehome);
4866: }
4867: if ($outcome eq 'unknown_cmd') {
4868: my $what;
4869: foreach my $cid (keys(%$storehash)) {
4870: $what .= &escape($cid).'=';
4871: foreach my $item ('description','inst_code','owner','type') {
4872: $what .= &escape($storehash->{$cid}{$item}).':';
4873: }
4874: $what =~ s/\:$/&/;
4875: }
4876: $what =~ s/\&$//;
4877: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4878: } else {
4879: return $outcome;
4880: }
4881: }
4882:
4883: sub courseiddump {
4884: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4885: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4886: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4887: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4888: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
4889: my $as_hash = 1;
4890: my %returnhash;
4891: if (!$domfilter) { $domfilter=''; }
4892: my %libserv = &all_library();
4893: foreach my $tryserver (keys(%libserv)) {
4894: if ( ( $hostidflag == 1
4895: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4896: || (!defined($hostidflag)) ) {
4897:
4898: if (($domfilter eq '') ||
4899: (&host_domain($tryserver) eq $domfilter)) {
4900: my $rep;
4901: if (grep { $_ eq $tryserver } current_machine_ids()) {
4902: $rep = LONCAPA::Lond::dump_course_id_handler(
4903: join(":", (&host_domain($tryserver), $sincefilter,
4904: &escape($descfilter), &escape($instcodefilter),
4905: &escape($ownerfilter), &escape($coursefilter),
4906: &escape($typefilter), &escape($regexp_ok),
4907: $as_hash, &escape($selfenrollonly),
4908: &escape($catfilter), $showhidden, $caller,
4909: &escape($cloner), &escape($cc_clone), $cloneonly,
4910: &escape($createdbefore), &escape($createdafter),
4911: &escape($creationcontext),$domcloner,$hasuniquecode,
4912: $reqcrsdom,&escape($reqinstcode))));
4913: } else {
4914: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4915: $sincefilter.':'.&escape($descfilter).':'.
4916: &escape($instcodefilter).':'.&escape($ownerfilter).
4917: ':'.&escape($coursefilter).':'.&escape($typefilter).
4918: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4919: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4920: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4921: &escape($cc_clone).':'.$cloneonly.':'.
4922: &escape($createdbefore).':'.&escape($createdafter).':'.
4923: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
4924: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
4925: }
4926:
4927: my @pairs=split(/\&/,$rep);
4928: foreach my $item (@pairs) {
4929: my ($key,$value)=split(/\=/,$item,2);
4930: $key = &unescape($key);
4931: next if ($key =~ /^error: 2 /);
4932: my $result = &thaw_unescape($value);
4933: if (ref($result) eq 'HASH') {
4934: $returnhash{$key}=$result;
4935: } else {
4936: my @responses = split(/:/,$value);
4937: my @items = ('description','inst_code','owner','type');
4938: for (my $i=0; $i<@responses; $i++) {
4939: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4940: }
4941: }
4942: }
4943: }
4944: }
4945: }
4946: return %returnhash;
4947: }
4948:
4949: sub courselastaccess {
4950: my ($cdom,$cnum,$hostidref) = @_;
4951: my %returnhash;
4952: if ($cdom && $cnum) {
4953: my $chome = &homeserver($cnum,$cdom);
4954: if ($chome ne 'no_host') {
4955: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4956: &extract_lastaccess(\%returnhash,$rep);
4957: }
4958: } else {
4959: if (!$cdom) { $cdom=''; }
4960: my %libserv = &all_library();
4961: foreach my $tryserver (keys(%libserv)) {
4962: if (ref($hostidref) eq 'ARRAY') {
4963: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4964: }
4965: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4966: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4967: &extract_lastaccess(\%returnhash,$rep);
4968: }
4969: }
4970: }
4971: return %returnhash;
4972: }
4973:
4974: sub extract_lastaccess {
4975: my ($returnhash,$rep) = @_;
4976: if (ref($returnhash) eq 'HASH') {
4977: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4978: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4979: $rep eq '') {
4980: my @pairs=split(/\&/,$rep);
4981: foreach my $item (@pairs) {
4982: my ($key,$value)=split(/\=/,$item,2);
4983: $key = &unescape($key);
4984: next if ($key =~ /^error: 2 /);
4985: $returnhash->{$key} = &thaw_unescape($value);
4986: }
4987: }
4988: }
4989: return;
4990: }
4991:
4992: # ---------------------------------------------------------- DC e-mail
4993:
4994: sub dcmailput {
4995: my ($domain,$msgid,$message,$server)=@_;
4996: my $status = &Apache::lonnet::critical(
4997: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4998: &escape($message),$server);
4999: return $status;
5000: }
5001:
5002: sub dcmaildump {
5003: my ($dom,$startdate,$enddate,$senders) = @_;
5004: my %returnhash=();
5005:
5006: if (defined(&domain($dom,'primary'))) {
5007: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5008: &escape($enddate).':';
5009: my @esc_senders=map { &escape($_)} @$senders;
5010: $cmd.=&escape(join('&',@esc_senders));
5011: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5012: my ($key,$value) = split(/\=/,$line,2);
5013: if (($key) && ($value)) {
5014: $returnhash{&unescape($key)} = &unescape($value);
5015: }
5016: }
5017: }
5018: return %returnhash;
5019: }
5020: # ---------------------------------------------------------- Domain roles
5021:
5022: sub get_domain_roles {
5023: my ($dom,$roles,$startdate,$enddate)=@_;
5024: if ((!defined($startdate)) || ($startdate eq '')) {
5025: $startdate = '.';
5026: }
5027: if ((!defined($enddate)) || ($enddate eq '')) {
5028: $enddate = '.';
5029: }
5030: my $rolelist;
5031: if (ref($roles) eq 'ARRAY') {
5032: $rolelist = join('&',@{$roles});
5033: }
5034: my %personnel = ();
5035:
5036: my %servers = &get_servers($dom,'library');
5037: foreach my $tryserver (keys(%servers)) {
5038: %{$personnel{$tryserver}}=();
5039: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5040: &escape($startdate).':'.
5041: &escape($enddate).':'.
5042: &escape($rolelist), $tryserver))) {
5043: my ($key,$value) = split(/\=/,$line,2);
5044: if (($key) && ($value)) {
5045: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5046: }
5047: }
5048: }
5049: return %personnel;
5050: }
5051:
5052: sub get_active_domroles {
5053: my ($dom,$roles) = @_;
5054: return () unless (ref($roles) eq 'ARRAY');
5055: my $now = time;
5056: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5057: my %domroles;
5058: foreach my $server (keys(%dompersonnel)) {
5059: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5060: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5061: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5062: }
5063: }
5064: return %domroles;
5065: }
5066:
5067: # ----------------------------------------------------------- Interval timing
5068:
5069: {
5070: # Caches needed for speedup of navmaps
5071: # We don't want to cache this for very long at all (5 seconds at most)
5072: #
5073: # The user for whom we cache
5074: my $cachedkey='';
5075: # The cached times for this user
5076: my %cachedtimes=();
5077: # When this was last done
5078: my $cachedtime='';
5079:
5080: sub load_all_first_access {
5081: my ($uname,$udom,$ignorecache)=@_;
5082: if (($cachedkey eq $uname.':'.$udom) &&
5083: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5084: (!$ignorecache)) {
5085: return;
5086: }
5087: $cachedtime=time;
5088: $cachedkey=$uname.':'.$udom;
5089: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5090: }
5091:
5092: sub get_first_access {
5093: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5094: my ($symb,$courseid,$udom,$uname)=&whichuser();
5095: if ($argsymb) { $symb=$argsymb; }
5096: my ($map,$id,$res)=&decode_symb($symb);
5097: if ($argmap) { $map = $argmap; }
5098: if ($type eq 'course') {
5099: $res='course';
5100: } elsif ($type eq 'map') {
5101: $res=&symbread($map);
5102: } else {
5103: $res=$symb;
5104: }
5105: &load_all_first_access($uname,$udom,$ignorecache);
5106: return $cachedtimes{"$courseid\0$res"};
5107: }
5108:
5109: sub set_first_access {
5110: my ($type,$interval)=@_;
5111: my ($symb,$courseid,$udom,$uname)=&whichuser();
5112: my ($map,$id,$res)=&decode_symb($symb);
5113: if ($type eq 'course') {
5114: $res='course';
5115: } elsif ($type eq 'map') {
5116: $res=&symbread($map);
5117: } else {
5118: $res=$symb;
5119: }
5120: $cachedkey='';
5121: my $firstaccess=&get_first_access($type,$symb,$map);
5122: if (!$firstaccess) {
5123: my $start = time;
5124: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5125: $udom,$uname);
5126: if ($putres eq 'ok') {
5127: &put('timerinterval',{"$courseid\0$res"=>$interval},
5128: $udom,$uname);
5129: &appenv(
5130: {
5131: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5132: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5133: }
5134: );
5135: }
5136: return $putres;
5137: }
5138: return 'already_set';
5139: }
5140: }
5141:
5142: # --------------------------------------------- Set Expire Date for Spreadsheet
5143:
5144: sub expirespread {
5145: my ($uname,$udom,$stype,$usymb)=@_;
5146: my $cid=$env{'request.course.id'};
5147: if ($cid) {
5148: my $now=time;
5149: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5150: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5151: $env{'course.'.$cid.'.num'}.
5152: ':nohist_expirationdates:'.
5153: &escape($key).'='.$now,
5154: $env{'course.'.$cid.'.home'})
5155: }
5156: return 'ok';
5157: }
5158:
5159: # ----------------------------------------------------- Devalidate Spreadsheets
5160:
5161: sub devalidate {
5162: my ($symb,$uname,$udom)=@_;
5163: my $cid=$env{'request.course.id'};
5164: if ($cid) {
5165: # delete the stored spreadsheets for
5166: # - the student level sheet of this user in course's homespace
5167: # - the assessment level sheet for this resource
5168: # for this user in user's homespace
5169: # - current conditional state info
5170: my $key=$uname.':'.$udom.':';
5171: my $status=
5172: &del('nohist_calculatedsheets',
5173: [$key.'studentcalc:'],
5174: $env{'course.'.$cid.'.domain'},
5175: $env{'course.'.$cid.'.num'})
5176: .' '.
5177: &del('nohist_calculatedsheets_'.$cid,
5178: [$key.'assesscalc:'.$symb],$udom,$uname);
5179: unless ($status eq 'ok ok') {
5180: &logthis('Could not devalidate spreadsheet '.
5181: $uname.' at '.$udom.' for '.
5182: $symb.': '.$status);
5183: }
5184: &delenv('user.state.'.$cid);
5185: }
5186: }
5187:
5188: sub get_scalar {
5189: my ($string,$end) = @_;
5190: my $value;
5191: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5192: $value = $1;
5193: } elsif ($$string =~ s/^([^&]*?)&//) {
5194: $value = $1;
5195: }
5196: return &unescape($value);
5197: }
5198:
5199: sub array2str {
5200: my (@array) = @_;
5201: my $result=&arrayref2str(\@array);
5202: $result=~s/^__ARRAY_REF__//;
5203: $result=~s/__END_ARRAY_REF__$//;
5204: return $result;
5205: }
5206:
5207: sub arrayref2str {
5208: my ($arrayref) = @_;
5209: my $result='__ARRAY_REF__';
5210: foreach my $elem (@$arrayref) {
5211: if(ref($elem) eq 'ARRAY') {
5212: $result.=&arrayref2str($elem).'&';
5213: } elsif(ref($elem) eq 'HASH') {
5214: $result.=&hashref2str($elem).'&';
5215: } elsif(ref($elem)) {
5216: #print("Got a ref of ".(ref($elem))." skipping.");
5217: } else {
5218: $result.=&escape($elem).'&';
5219: }
5220: }
5221: $result=~s/\&$//;
5222: $result .= '__END_ARRAY_REF__';
5223: return $result;
5224: }
5225:
5226: sub hash2str {
5227: my (%hash) = @_;
5228: my $result=&hashref2str(\%hash);
5229: $result=~s/^__HASH_REF__//;
5230: $result=~s/__END_HASH_REF__$//;
5231: return $result;
5232: }
5233:
5234: sub hashref2str {
5235: my ($hashref)=@_;
5236: my $result='__HASH_REF__';
5237: foreach my $key (sort(keys(%$hashref))) {
5238: if (ref($key) eq 'ARRAY') {
5239: $result.=&arrayref2str($key).'=';
5240: } elsif (ref($key) eq 'HASH') {
5241: $result.=&hashref2str($key).'=';
5242: } elsif (ref($key)) {
5243: $result.='=';
5244: #print("Got a ref of ".(ref($key))." skipping.");
5245: } else {
5246: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5247: }
5248:
5249: if(ref($hashref->{$key}) eq 'ARRAY') {
5250: $result.=&arrayref2str($hashref->{$key}).'&';
5251: } elsif(ref($hashref->{$key}) eq 'HASH') {
5252: $result.=&hashref2str($hashref->{$key}).'&';
5253: } elsif(ref($hashref->{$key})) {
5254: $result.='&';
5255: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5256: } else {
5257: $result.=&escape($hashref->{$key}).'&';
5258: }
5259: }
5260: $result=~s/\&$//;
5261: $result .= '__END_HASH_REF__';
5262: return $result;
5263: }
5264:
5265: sub str2hash {
5266: my ($string)=@_;
5267: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5268: return %$hash;
5269: }
5270:
5271: sub str2hashref {
5272: my ($string) = @_;
5273:
5274: my %hash;
5275:
5276: if($string !~ /^__HASH_REF__/) {
5277: if (! ($string eq '' || !defined($string))) {
5278: $hash{'error'}='Not hash reference';
5279: }
5280: return (\%hash, $string);
5281: }
5282:
5283: $string =~ s/^__HASH_REF__//;
5284:
5285: while($string !~ /^__END_HASH_REF__/) {
5286: #key
5287: my $key='';
5288: if($string =~ /^__HASH_REF__/) {
5289: ($key, $string)=&str2hashref($string);
5290: if(defined($key->{'error'})) {
5291: $hash{'error'}='Bad data';
5292: return (\%hash, $string);
5293: }
5294: } elsif($string =~ /^__ARRAY_REF__/) {
5295: ($key, $string)=&str2arrayref($string);
5296: if($key->[0] eq 'Array reference error') {
5297: $hash{'error'}='Bad data';
5298: return (\%hash, $string);
5299: }
5300: } else {
5301: $string =~ s/^(.*?)=//;
5302: $key=&unescape($1);
5303: }
5304: $string =~ s/^=//;
5305:
5306: #value
5307: my $value='';
5308: if($string =~ /^__HASH_REF__/) {
5309: ($value, $string)=&str2hashref($string);
5310: if(defined($value->{'error'})) {
5311: $hash{'error'}='Bad data';
5312: return (\%hash, $string);
5313: }
5314: } elsif($string =~ /^__ARRAY_REF__/) {
5315: ($value, $string)=&str2arrayref($string);
5316: if($value->[0] eq 'Array reference error') {
5317: $hash{'error'}='Bad data';
5318: return (\%hash, $string);
5319: }
5320: } else {
5321: $value=&get_scalar(\$string,'__END_HASH_REF__');
5322: }
5323: $string =~ s/^&//;
5324:
5325: $hash{$key}=$value;
5326: }
5327:
5328: $string =~ s/^__END_HASH_REF__//;
5329:
5330: return (\%hash, $string);
5331: }
5332:
5333: sub str2array {
5334: my ($string)=@_;
5335: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5336: return @$array;
5337: }
5338:
5339: sub str2arrayref {
5340: my ($string) = @_;
5341: my @array;
5342:
5343: if($string !~ /^__ARRAY_REF__/) {
5344: if (! ($string eq '' || !defined($string))) {
5345: $array[0]='Array reference error';
5346: }
5347: return (\@array, $string);
5348: }
5349:
5350: $string =~ s/^__ARRAY_REF__//;
5351:
5352: while($string !~ /^__END_ARRAY_REF__/) {
5353: my $value='';
5354: if($string =~ /^__HASH_REF__/) {
5355: ($value, $string)=&str2hashref($string);
5356: if(defined($value->{'error'})) {
5357: $array[0] ='Array reference error';
5358: return (\@array, $string);
5359: }
5360: } elsif($string =~ /^__ARRAY_REF__/) {
5361: ($value, $string)=&str2arrayref($string);
5362: if($value->[0] eq 'Array reference error') {
5363: $array[0] ='Array reference error';
5364: return (\@array, $string);
5365: }
5366: } else {
5367: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5368: }
5369: $string =~ s/^&//;
5370:
5371: push(@array, $value);
5372: }
5373:
5374: $string =~ s/^__END_ARRAY_REF__//;
5375:
5376: return (\@array, $string);
5377: }
5378:
5379: # -------------------------------------------------------------------Temp Store
5380:
5381: sub tmpreset {
5382: my ($symb,$namespace,$domain,$stuname) = @_;
5383: if (!$symb) {
5384: $symb=&symbread();
5385: if (!$symb) { $symb= $env{'request.url'}; }
5386: }
5387: $symb=escape($symb);
5388:
5389: if (!$namespace) { $namespace=$env{'request.state'}; }
5390: $namespace=~s/\//\_/g;
5391: $namespace=~s/\W//g;
5392:
5393: if (!$domain) { $domain=$env{'user.domain'}; }
5394: if (!$stuname) { $stuname=$env{'user.name'}; }
5395: if ($domain eq 'public' && $stuname eq 'public') {
5396: $stuname=$ENV{'REMOTE_ADDR'};
5397: }
5398: my $path=LONCAPA::tempdir();
5399: my %hash;
5400: if (tie(%hash,'GDBM_File',
5401: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5402: &GDBM_WRCREAT(),0640)) {
5403: foreach my $key (keys(%hash)) {
5404: if ($key=~ /:$symb/) {
5405: delete($hash{$key});
5406: }
5407: }
5408: }
5409: }
5410:
5411: sub tmpstore {
5412: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5413:
5414: if (!$symb) {
5415: $symb=&symbread();
5416: if (!$symb) { $symb= $env{'request.url'}; }
5417: }
5418: $symb=escape($symb);
5419:
5420: if (!$namespace) {
5421: # I don't think we would ever want to store this for a course.
5422: # it seems this will only be used if we don't have a course.
5423: #$namespace=$env{'request.course.id'};
5424: #if (!$namespace) {
5425: $namespace=$env{'request.state'};
5426: #}
5427: }
5428: $namespace=~s/\//\_/g;
5429: $namespace=~s/\W//g;
5430: if (!$domain) { $domain=$env{'user.domain'}; }
5431: if (!$stuname) { $stuname=$env{'user.name'}; }
5432: if ($domain eq 'public' && $stuname eq 'public') {
5433: $stuname=$ENV{'REMOTE_ADDR'};
5434: }
5435: my $now=time;
5436: my %hash;
5437: my $path=LONCAPA::tempdir();
5438: if (tie(%hash,'GDBM_File',
5439: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5440: &GDBM_WRCREAT(),0640)) {
5441: $hash{"version:$symb"}++;
5442: my $version=$hash{"version:$symb"};
5443: my $allkeys='';
5444: foreach my $key (keys(%$storehash)) {
5445: $allkeys.=$key.':';
5446: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5447: }
5448: $hash{"$version:$symb:timestamp"}=$now;
5449: $allkeys.='timestamp';
5450: $hash{"$version:keys:$symb"}=$allkeys;
5451: if (untie(%hash)) {
5452: return 'ok';
5453: } else {
5454: return "error:$!";
5455: }
5456: } else {
5457: return "error:$!";
5458: }
5459: }
5460:
5461: # -----------------------------------------------------------------Temp Restore
5462:
5463: sub tmprestore {
5464: my ($symb,$namespace,$domain,$stuname) = @_;
5465:
5466: if (!$symb) {
5467: $symb=&symbread();
5468: if (!$symb) { $symb= $env{'request.url'}; }
5469: }
5470: $symb=escape($symb);
5471:
5472: if (!$namespace) { $namespace=$env{'request.state'}; }
5473:
5474: if (!$domain) { $domain=$env{'user.domain'}; }
5475: if (!$stuname) { $stuname=$env{'user.name'}; }
5476: if ($domain eq 'public' && $stuname eq 'public') {
5477: $stuname=$ENV{'REMOTE_ADDR'};
5478: }
5479: my %returnhash;
5480: $namespace=~s/\//\_/g;
5481: $namespace=~s/\W//g;
5482: my %hash;
5483: my $path=LONCAPA::tempdir();
5484: if (tie(%hash,'GDBM_File',
5485: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5486: &GDBM_READER(),0640)) {
5487: my $version=$hash{"version:$symb"};
5488: $returnhash{'version'}=$version;
5489: my $scope;
5490: for ($scope=1;$scope<=$version;$scope++) {
5491: my $vkeys=$hash{"$scope:keys:$symb"};
5492: my @keys=split(/:/,$vkeys);
5493: my $key;
5494: $returnhash{"$scope:keys"}=$vkeys;
5495: foreach $key (@keys) {
5496: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5497: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5498: }
5499: }
5500: if (!(untie(%hash))) {
5501: return "error:$!";
5502: }
5503: } else {
5504: return "error:$!";
5505: }
5506: return %returnhash;
5507: }
5508:
5509: # ----------------------------------------------------------------------- Store
5510:
5511: sub store {
5512: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5513: my $home='';
5514:
5515: if ($stuname) { $home=&homeserver($stuname,$domain); }
5516:
5517: $symb=&symbclean($symb);
5518: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5519:
5520: if (!$domain) { $domain=$env{'user.domain'}; }
5521: if (!$stuname) { $stuname=$env{'user.name'}; }
5522:
5523: &devalidate($symb,$stuname,$domain);
5524:
5525: $symb=escape($symb);
5526: if (!$namespace) {
5527: unless ($namespace=$env{'request.course.id'}) {
5528: return '';
5529: }
5530: }
5531: if (!$home) { $home=$env{'user.home'}; }
5532:
5533: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5534: $$storehash{'host'}=$perlvar{'lonHostID'};
5535:
5536: my $namevalue='';
5537: foreach my $key (keys(%$storehash)) {
5538: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5539: }
5540: $namevalue=~s/\&$//;
5541: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5542: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5543: }
5544:
5545: # -------------------------------------------------------------- Critical Store
5546:
5547: sub cstore {
5548: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5549: my $home='';
5550:
5551: if ($stuname) { $home=&homeserver($stuname,$domain); }
5552:
5553: $symb=&symbclean($symb);
5554: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5555:
5556: if (!$domain) { $domain=$env{'user.domain'}; }
5557: if (!$stuname) { $stuname=$env{'user.name'}; }
5558:
5559: &devalidate($symb,$stuname,$domain);
5560:
5561: $symb=escape($symb);
5562: if (!$namespace) {
5563: unless ($namespace=$env{'request.course.id'}) {
5564: return '';
5565: }
5566: }
5567: if (!$home) { $home=$env{'user.home'}; }
5568:
5569: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5570: $$storehash{'host'}=$perlvar{'lonHostID'};
5571:
5572: my $namevalue='';
5573: foreach my $key (keys(%$storehash)) {
5574: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5575: }
5576: $namevalue=~s/\&$//;
5577: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5578: return critical
5579: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5580: }
5581:
5582: # --------------------------------------------------------------------- Restore
5583:
5584: sub restore {
5585: my ($symb,$namespace,$domain,$stuname) = @_;
5586: my $home='';
5587:
5588: if ($stuname) { $home=&homeserver($stuname,$domain); }
5589:
5590: if (!$symb) {
5591: return if ($namespace eq 'courserequests');
5592: unless ($symb=escape(&symbread())) { return ''; }
5593: } else {
5594: unless ($namespace eq 'courserequests') {
5595: $symb=&escape(&symbclean($symb));
5596: }
5597: }
5598: if (!$namespace) {
5599: unless ($namespace=$env{'request.course.id'}) {
5600: return '';
5601: }
5602: }
5603: if (!$domain) { $domain=$env{'user.domain'}; }
5604: if (!$stuname) { $stuname=$env{'user.name'}; }
5605: if (!$home) { $home=$env{'user.home'}; }
5606: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5607:
5608: my %returnhash=();
5609: foreach my $line (split(/\&/,$answer)) {
5610: my ($name,$value)=split(/\=/,$line);
5611: $returnhash{&unescape($name)}=&thaw_unescape($value);
5612: }
5613: my $version;
5614: for ($version=1;$version<=$returnhash{'version'};$version++) {
5615: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5616: $returnhash{$item}=$returnhash{$version.':'.$item};
5617: }
5618: }
5619: return %returnhash;
5620: }
5621:
5622: # ---------------------------------------------------------- Course Description
5623: #
5624: #
5625:
5626: sub coursedescription {
5627: my ($courseid,$args)=@_;
5628: $courseid=~s/^\///;
5629: $courseid=~s/\_/\//g;
5630: my ($cdomain,$cnum)=split(/\//,$courseid);
5631: my $chome=&homeserver($cnum,$cdomain);
5632: my $normalid=$cdomain.'_'.$cnum;
5633: # need to always cache even if we get errors otherwise we keep
5634: # trying and trying and trying to get the course description.
5635: my %envhash=();
5636: my %returnhash=();
5637:
5638: my $expiretime=600;
5639: if ($env{'request.course.id'} eq $normalid) {
5640: $expiretime=120;
5641: }
5642:
5643: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5644: if (!$args->{'freshen_cache'}
5645: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5646: foreach my $key (keys(%env)) {
5647: next if ($key !~ /^\Q$prefix\E(.*)/);
5648: my ($setting) = $1;
5649: $returnhash{$setting} = $env{$key};
5650: }
5651: return %returnhash;
5652: }
5653:
5654: # get the data again
5655:
5656: if (!$args->{'one_time'}) {
5657: $envhash{'course.'.$normalid.'.last_cache'}=time;
5658: }
5659:
5660: if ($chome ne 'no_host') {
5661: %returnhash=&dump('environment',$cdomain,$cnum);
5662: if (!exists($returnhash{'con_lost'})) {
5663: my $username = $env{'user.name'}; # Defult username
5664: if(defined $args->{'user'}) {
5665: $username = $args->{'user'};
5666: }
5667: $returnhash{'home'}= $chome;
5668: $returnhash{'domain'} = $cdomain;
5669: $returnhash{'num'} = $cnum;
5670: if (!defined($returnhash{'type'})) {
5671: $returnhash{'type'} = 'Course';
5672: }
5673: while (my ($name,$value) = each %returnhash) {
5674: $envhash{'course.'.$normalid.'.'.$name}=$value;
5675: }
5676: $returnhash{'url'}=&clutter($returnhash{'url'});
5677: $returnhash{'fn'}=LONCAPA::tempdir() .
5678: $username.'_'.$cdomain.'_'.$cnum;
5679: $envhash{'course.'.$normalid.'.home'}=$chome;
5680: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5681: $envhash{'course.'.$normalid.'.num'}=$cnum;
5682: }
5683: }
5684: if (!$args->{'one_time'}) {
5685: &appenv(\%envhash);
5686: }
5687: return %returnhash;
5688: }
5689:
5690: sub update_released_required {
5691: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5692: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5693: $cid = $env{'request.course.id'};
5694: $cdom = $env{'course.'.$cid.'.domain'};
5695: $cnum = $env{'course.'.$cid.'.num'};
5696: $chome = $env{'course.'.$cid.'.home'};
5697: }
5698: if ($needsrelease) {
5699: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5700: my $needsupdate;
5701: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5702: $needsupdate = 1;
5703: } else {
5704: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5705: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5706: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5707: $needsupdate = 1;
5708: }
5709: }
5710: if ($needsupdate) {
5711: my %needshash = (
5712: 'internal.releaserequired' => $needsrelease,
5713: );
5714: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5715: if ($putresult eq 'ok') {
5716: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5717: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5718: if (ref($crsinfo{$cid}) eq 'HASH') {
5719: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5720: &courseidput($cdom,\%crsinfo,$chome,'notime');
5721: }
5722: }
5723: }
5724: }
5725: return;
5726: }
5727:
5728: # -------------------------------------------------See if a user is privileged
5729:
5730: sub privileged {
5731: my ($username,$domain,$possdomains,$possroles)=@_;
5732: my $now = time;
5733: my $roles;
5734: if (ref($possroles) eq 'ARRAY') {
5735: $roles = $possroles;
5736: } else {
5737: $roles = ['dc','su'];
5738: }
5739: if (ref($possdomains) eq 'ARRAY') {
5740: my %privileged = &privileged_by_domain($possdomains,$roles);
5741: foreach my $dom (@{$possdomains}) {
5742: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5743: (ref($privileged{$dom}) eq 'HASH')) {
5744: foreach my $role (@{$roles}) {
5745: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5746: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5747: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5748: return 1 unless (($end && $end < $now) ||
5749: ($start && $start > $now));
5750: }
5751: }
5752: }
5753: }
5754: }
5755: } else {
5756: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5757: my $now = time;
5758:
5759: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5760: my ($trole, $tend, $tstart) = split(/_/, $role);
5761: if (grep(/^\Q$trole\E$/,@{$roles})) {
5762: return 1 unless ($tend && $tend < $now)
5763: or ($tstart && $tstart > $now);
5764: }
5765: }
5766: }
5767: return 0;
5768: }
5769:
5770: sub privileged_by_domain {
5771: my ($domains,$roles) = @_;
5772: my %privileged = ();
5773: my $cachetime = 60*60*24;
5774: my $now = time;
5775: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5776: return %privileged;
5777: }
5778: foreach my $dom (@{$domains}) {
5779: next if (ref($privileged{$dom}) eq 'HASH');
5780: my $needroles;
5781: foreach my $role (@{$roles}) {
5782: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5783: if (defined($cached)) {
5784: if (ref($result) eq 'HASH') {
5785: $privileged{$dom}{$role} = $result;
5786: }
5787: } else {
5788: $needroles = 1;
5789: }
5790: }
5791: if ($needroles) {
5792: my %dompersonnel = &get_domain_roles($dom,$roles);
5793: $privileged{$dom} = {};
5794: foreach my $server (keys(%dompersonnel)) {
5795: if (ref($dompersonnel{$server}) eq 'HASH') {
5796: foreach my $item (keys(%{$dompersonnel{$server}})) {
5797: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5798: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5799: next if ($end && $end < $now);
5800: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5801: $dompersonnel{$server}{$item};
5802: }
5803: }
5804: }
5805: if (ref($privileged{$dom}) eq 'HASH') {
5806: foreach my $role (@{$roles}) {
5807: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5808: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5809: } else {
5810: my %hash = ();
5811: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5812: }
5813: }
5814: }
5815: }
5816: }
5817: return %privileged;
5818: }
5819:
5820: # -------------------------------------------------------- Get user privileges
5821:
5822: sub rolesinit {
5823: my ($domain, $username) = @_;
5824: my %userroles = ('user.login.time' => time);
5825: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5826:
5827: # firstaccess and timerinterval are related to timed maps/resources.
5828: # also, blocking can be triggered by an activating timer
5829: # it's saved in the user's %env.
5830: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5831: my %timerinterval = &dump('timerinterval', $domain, $username);
5832: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5833: %timerintchk, %timerintenv);
5834:
5835: foreach my $key (keys(%firstaccess)) {
5836: my ($cid, $rest) = split(/\0/, $key);
5837: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5838: }
5839:
5840: foreach my $key (keys(%timerinterval)) {
5841: my ($cid,$rest) = split(/\0/,$key);
5842: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5843: }
5844:
5845: my %allroles=();
5846: my %allgroups=();
5847:
5848: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5849: my $role = $rolesdump{$area};
5850: $area =~ s/\_\w\w$//;
5851:
5852: my ($trole, $tend, $tstart, $group_privs);
5853:
5854: if ($role =~ /^cr/) {
5855: # Custom role, defined by a user
5856: # e.g., user.role.cr/msu/smith/mynewrole
5857: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5858: $trole = $1;
5859: ($tend, $tstart) = split('_', $2);
5860: } else {
5861: $trole = $role;
5862: }
5863: } elsif ($role =~ m|^gr/|) {
5864: # Role of member in a group, defined within a course/community
5865: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5866: ($trole, $tend, $tstart) = split(/_/, $role);
5867: next if $tstart eq '-1';
5868: ($trole, $group_privs) = split(/\//, $trole);
5869: $group_privs = &unescape($group_privs);
5870: } else {
5871: # Just a normal role, defined in roles.tab
5872: ($trole, $tend, $tstart) = split(/_/,$role);
5873: }
5874:
5875: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5876: $username);
5877: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5878:
5879: # role expired or not available yet?
5880: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5881: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5882:
5883: next if $area eq '' or $trole eq '';
5884:
5885: my $spec = "$trole.$area";
5886: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5887:
5888: if ($trole =~ /^cr\//) {
5889: # Custom role, defined by a user
5890: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5891: } elsif ($trole eq 'gr') {
5892: # Role of a member in a group, defined within a course/community
5893: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5894: next;
5895: } else {
5896: # Normal role, defined in roles.tab
5897: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5898: }
5899:
5900: my $cid = $tdomain.'_'.$trest;
5901: unless ($firstaccchk{$cid}) {
5902: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5903: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5904: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5905: $coursetimerstarts{$cid}{$item};
5906: }
5907: }
5908: $firstaccchk{$cid} = 1;
5909: }
5910: unless ($timerintchk{$cid}) {
5911: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5912: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5913: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5914: $coursetimerintervals{$cid}{$item};
5915: }
5916: }
5917: $timerintchk{$cid} = 1;
5918: }
5919: }
5920:
5921: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
5922: \%allroles, \%allgroups);
5923: $env{'user.adv'} = $userroles{'user.adv'};
5924: $env{'user.rar'} = $userroles{'user.rar'};
5925:
5926: return (\%userroles,\%firstaccenv,\%timerintenv);
5927: }
5928:
5929: sub set_arearole {
5930: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5931: unless ($nolog) {
5932: # log the associated role with the area
5933: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5934: }
5935: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5936: }
5937:
5938: sub custom_roleprivs {
5939: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5940: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5941: my $homsvr = &homeserver($rauthor,$rdomain);
5942: if (&hostname($homsvr) ne '') {
5943: my ($rdummy,$roledef)=
5944: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5945: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5946: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5947: if (defined($syspriv)) {
5948: if ($trest =~ /^$match_community$/) {
5949: $syspriv =~ s/bre\&S//;
5950: }
5951: $$allroles{'cm./'}.=':'.$syspriv;
5952: $$allroles{$spec.'./'}.=':'.$syspriv;
5953: }
5954: if ($tdomain ne '') {
5955: if (defined($dompriv)) {
5956: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5957: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5958: }
5959: if (($trest ne '') && (defined($coursepriv))) {
5960: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
5961: my $rolename = $1;
5962: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
5963: }
5964: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5965: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5966: }
5967: }
5968: }
5969: }
5970: }
5971:
5972: sub course_adhocrole_privs {
5973: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
5974: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
5975: if ($overrides{"internal.adhocpriv.$rolename"}) {
5976: my (%currprivs,%storeprivs);
5977: foreach my $item (split(/:/,$coursepriv)) {
5978: my ($priv,$restrict) = split(/\&/,$item);
5979: $currprivs{$priv} = $restrict;
5980: }
5981: my (%possadd,%possremove,%full);
5982: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
5983: my ($priv,$restrict)=split(/\&/,$item);
5984: $full{$priv} = $restrict;
5985: }
5986: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
5987: next if ($item eq '');
5988: my ($rule,$rest) = split(/=/,$item);
5989: next unless (($rule eq 'off') || ($rule eq 'on'));
5990: foreach my $priv (split(/:/,$rest)) {
5991: if ($priv ne '') {
5992: if ($rule eq 'off') {
5993: $possremove{$priv} = 1;
5994: } else {
5995: $possadd{$priv} = 1;
5996: }
5997: }
5998: }
5999: }
6000: foreach my $priv (sort(keys(%full))) {
6001: if (exists($currprivs{$priv})) {
6002: unless (exists($possremove{$priv})) {
6003: $storeprivs{$priv} = $currprivs{$priv};
6004: }
6005: } elsif (exists($possadd{$priv})) {
6006: $storeprivs{$priv} = $full{$priv};
6007: }
6008: }
6009: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6010: }
6011: return $coursepriv;
6012: }
6013:
6014: sub group_roleprivs {
6015: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6016: my $access = 1;
6017: my $now = time;
6018: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6019: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6020: if ($access) {
6021: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6022: $$allgroups{$course}{$group} .=':'.$group_privs;
6023: }
6024: }
6025:
6026: sub standard_roleprivs {
6027: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6028: if (defined($pr{$trole.':s'})) {
6029: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6030: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6031: }
6032: if ($tdomain ne '') {
6033: if (defined($pr{$trole.':d'})) {
6034: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6035: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6036: }
6037: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6038: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6039: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6040: }
6041: }
6042: }
6043:
6044: sub set_userprivs {
6045: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6046: my $author=0;
6047: my $adv=0;
6048: my $rar=0;
6049: my %grouproles = ();
6050: if (keys(%{$allgroups}) > 0) {
6051: my @groupkeys;
6052: foreach my $role (keys(%{$allroles})) {
6053: push(@groupkeys,$role);
6054: }
6055: if (ref($groups_roles) eq 'HASH') {
6056: foreach my $key (keys(%{$groups_roles})) {
6057: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6058: push(@groupkeys,$key);
6059: }
6060: }
6061: }
6062: if (@groupkeys > 0) {
6063: foreach my $role (@groupkeys) {
6064: my ($trole,$area,$sec,$extendedarea);
6065: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6066: $trole = $1;
6067: $area = $2;
6068: $sec = $3;
6069: $extendedarea = $area.$sec;
6070: if (exists($$allgroups{$area})) {
6071: foreach my $group (keys(%{$$allgroups{$area}})) {
6072: my $spec = $trole.'.'.$extendedarea;
6073: $grouproles{$spec.'.'.$area.'/'.$group} =
6074: $$allgroups{$area}{$group};
6075: }
6076: }
6077: }
6078: }
6079: }
6080: }
6081: foreach my $group (keys(%grouproles)) {
6082: $$allroles{$group} = $grouproles{$group};
6083: }
6084: foreach my $role (keys(%{$allroles})) {
6085: my %thesepriv;
6086: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6087: foreach my $item (split(/:/,$$allroles{$role})) {
6088: if ($item ne '') {
6089: my ($privilege,$restrictions)=split(/&/,$item);
6090: if ($restrictions eq '') {
6091: $thesepriv{$privilege}='F';
6092: } elsif ($thesepriv{$privilege} ne 'F') {
6093: $thesepriv{$privilege}.=$restrictions;
6094: }
6095: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6096: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6097: }
6098: }
6099: my $thesestr='';
6100: foreach my $priv (sort(keys(%thesepriv))) {
6101: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6102: }
6103: $userroles->{'user.priv.'.$role} = $thesestr;
6104: }
6105: return ($author,$adv,$rar);
6106: }
6107:
6108: sub role_status {
6109: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6110: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6111: my ($one,$two) = split(m{\./},$rolekey,2);
6112: (undef,undef,$$role) = split(/\./,$one,3);
6113: unless (!defined($$role) || $$role eq '') {
6114: $$where = '/'.$two;
6115: $$trolecode=$$role.'.'.$$where;
6116: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6117: $$tstatus='is';
6118: if ($$tstart && $$tstart>$update) {
6119: $$tstatus='future';
6120: if ($$tstart<$now) {
6121: if ($$tstart && $$tstart>$refresh) {
6122: if (($$where ne '') && ($$role ne '')) {
6123: my (%allroles,%allgroups,$group_privs,
6124: %groups_roles,@rolecodes);
6125: my %userroles = (
6126: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6127: );
6128: @rolecodes = ('cm');
6129: my $spec=$$role.'.'.$$where;
6130: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6131: if ($$role =~ /^cr\//) {
6132: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6133: push(@rolecodes,'cr');
6134: } elsif ($$role eq 'gr') {
6135: push(@rolecodes,$$role);
6136: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6137: $env{'user.name'});
6138: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6139: (undef,my $group_privs) = split(/\//,$trole);
6140: $group_privs = &unescape($group_privs);
6141: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6142: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6143: &get_groups_roles($tdomain,$trest,
6144: \%course_roles,\@rolecodes,
6145: \%groups_roles);
6146: } else {
6147: push(@rolecodes,$$role);
6148: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6149: }
6150: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6151: \%groups_roles);
6152: &appenv(\%userroles,\@rolecodes);
6153: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6154: }
6155: }
6156: $$tstatus = 'is';
6157: }
6158: }
6159: if ($$tend) {
6160: if ($$tend<$update) {
6161: $$tstatus='expired';
6162: } elsif ($$tend<$now) {
6163: $$tstatus='will_not';
6164: }
6165: }
6166: }
6167: }
6168: }
6169:
6170: sub get_groups_roles {
6171: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6172: return unless((ref($cdom_courseroles) eq 'HASH') &&
6173: (ref($rolecodes) eq 'ARRAY') &&
6174: (ref($groups_roles) eq 'HASH'));
6175: if (keys(%{$cdom_courseroles}) > 0) {
6176: my ($cnum) = ($rest =~ /^($match_courseid)/);
6177: if ($cdom ne '' && $cnum ne '') {
6178: foreach my $key (keys(%{$cdom_courseroles})) {
6179: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6180: my $crsrole = $1;
6181: my $crssec = $2;
6182: if ($crsrole =~ /^cr/) {
6183: unless (grep(/^cr$/,@{$rolecodes})) {
6184: push(@{$rolecodes},'cr');
6185: }
6186: } else {
6187: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6188: push(@{$rolecodes},$crsrole);
6189: }
6190: }
6191: my $rolekey = "$crsrole./$cdom/$cnum";
6192: if ($crssec ne '') {
6193: $rolekey .= "/$crssec";
6194: }
6195: $rolekey .= './';
6196: $groups_roles->{$rolekey} = $rolecodes;
6197: }
6198: }
6199: }
6200: }
6201: return;
6202: }
6203:
6204: sub delete_env_groupprivs {
6205: my ($where,$courseroles,$possroles) = @_;
6206: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6207: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6208: unless (ref($courseroles->{$udom}) eq 'HASH') {
6209: %{$courseroles->{$udom}} =
6210: &get_my_roles('','','userroles',['active'],
6211: $possroles,[$udom],1);
6212: }
6213: if (ref($courseroles->{$udom}) eq 'HASH') {
6214: foreach my $item (keys(%{$courseroles->{$udom}})) {
6215: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6216: my $area = '/'.$cdom.'/'.$cnum;
6217: my $privkey = "user.priv.$crsrole.$area";
6218: if ($crssec ne '') {
6219: $privkey .= '/'.$crssec;
6220: }
6221: $privkey .= ".$area/$group";
6222: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6223: }
6224: }
6225: return;
6226: }
6227:
6228: sub check_adhoc_privs {
6229: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6230: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6231: if ($sec) {
6232: $cckey .= '/'.$sec;
6233: }
6234: my $setprivs;
6235: if ($env{$cckey}) {
6236: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6237: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6238: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6239: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6240: $setprivs = 1;
6241: }
6242: } else {
6243: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6244: $setprivs = 1;
6245: }
6246: return $setprivs;
6247: }
6248:
6249: sub set_adhoc_privileges {
6250: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6251: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6252: my $area = '/'.$dcdom.'/'.$pickedcourse;
6253: if ($sec ne '') {
6254: $area .= '/'.$sec;
6255: }
6256: my $spec = $role.'.'.$area;
6257: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6258: $env{'user.name'},1);
6259: my %rolehash = ();
6260: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6261: my $rolename = $1;
6262: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6263: my %domdef = &get_domain_defaults($dcdom);
6264: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6265: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6266: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6267: }
6268: }
6269: } else {
6270: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6271: }
6272: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6273: &appenv(\%userroles,[$role,'cm']);
6274: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6275: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6276: &appenv( {'request.role' => $spec,
6277: 'request.role.domain' => $dcdom,
6278: 'request.course.sec' => $sec,
6279: }
6280: );
6281: my $tadv=0;
6282: if (&allowed('adv') eq 'F') { $tadv=1; }
6283: &appenv({'request.role.adv' => $tadv});
6284: }
6285: }
6286:
6287: # --------------------------------------------------------------- get interface
6288:
6289: sub get {
6290: my ($namespace,$storearr,$udomain,$uname)=@_;
6291: my $items='';
6292: foreach my $item (@$storearr) {
6293: $items.=&escape($item).'&';
6294: }
6295: $items=~s/\&$//;
6296: if (!$udomain) { $udomain=$env{'user.domain'}; }
6297: if (!$uname) { $uname=$env{'user.name'}; }
6298: my $uhome=&homeserver($uname,$udomain);
6299:
6300: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6301: my @pairs=split(/\&/,$rep);
6302: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6303: return @pairs;
6304: }
6305: my %returnhash=();
6306: my $i=0;
6307: foreach my $item (@$storearr) {
6308: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6309: $i++;
6310: }
6311: return %returnhash;
6312: }
6313:
6314: # --------------------------------------------------------------- del interface
6315:
6316: sub del {
6317: my ($namespace,$storearr,$udomain,$uname)=@_;
6318: my $items='';
6319: foreach my $item (@$storearr) {
6320: $items.=&escape($item).'&';
6321: }
6322:
6323: $items=~s/\&$//;
6324: if (!$udomain) { $udomain=$env{'user.domain'}; }
6325: if (!$uname) { $uname=$env{'user.name'}; }
6326: my $uhome=&homeserver($uname,$udomain);
6327: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6328: }
6329:
6330: # -------------------------------------------------------------- dump interface
6331:
6332: sub unserialize {
6333: my ($rep, $escapedkeys) = @_;
6334:
6335: return {} if $rep =~ /^error/;
6336:
6337: my %returnhash=();
6338: foreach my $item (split(/\&/,$rep)) {
6339: my ($key, $value) = split(/=/, $item, 2);
6340: $key = unescape($key) unless $escapedkeys;
6341: next if $key =~ /^error: 2 /;
6342: $returnhash{$key} = &thaw_unescape($value);
6343: }
6344: #return %returnhash;
6345: return \%returnhash;
6346: }
6347:
6348: # see Lond::dump_with_regexp
6349: # if $escapedkeys hash keys won't get unescaped.
6350: sub dump {
6351: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6352: if (!$udomain) { $udomain=$env{'user.domain'}; }
6353: if (!$uname) { $uname=$env{'user.name'}; }
6354: my $uhome=&homeserver($uname,$udomain);
6355:
6356: if ($regexp) {
6357: $regexp=&escape($regexp);
6358: } else {
6359: $regexp='.';
6360: }
6361: if (grep { $_ eq $uhome } current_machine_ids()) {
6362: # user is hosted on this machine
6363: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6364: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6365: return %{unserialize($reply, $escapedkeys)};
6366: }
6367: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6368: my @pairs=split(/\&/,$rep);
6369: my %returnhash=();
6370: if (!($rep =~ /^error/ )) {
6371: foreach my $item (@pairs) {
6372: my ($key,$value)=split(/=/,$item,2);
6373: $key = unescape($key) unless $escapedkeys;
6374: #$key = &unescape($key);
6375: next if ($key =~ /^error: 2 /);
6376: $returnhash{$key}=&thaw_unescape($value);
6377: }
6378: }
6379: return %returnhash;
6380: }
6381:
6382:
6383: # --------------------------------------------------------- dumpstore interface
6384:
6385: sub dumpstore {
6386: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6387: # same as dump but keys must be escaped. They may contain colon separated
6388: # lists of values that may themself contain colons (e.g. symbs).
6389: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6390: }
6391:
6392: # -------------------------------------------------------------- keys interface
6393:
6394: sub getkeys {
6395: my ($namespace,$udomain,$uname)=@_;
6396: if (!$udomain) { $udomain=$env{'user.domain'}; }
6397: if (!$uname) { $uname=$env{'user.name'}; }
6398: my $uhome=&homeserver($uname,$udomain);
6399: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6400: my @keyarray=();
6401: foreach my $key (split(/\&/,$rep)) {
6402: next if ($key =~ /^error: 2 /);
6403: push(@keyarray,&unescape($key));
6404: }
6405: return @keyarray;
6406: }
6407:
6408: # --------------------------------------------------------------- currentdump
6409: sub currentdump {
6410: my ($courseid,$sdom,$sname)=@_;
6411: $courseid = $env{'request.course.id'} if (! defined($courseid));
6412: $sdom = $env{'user.domain'} if (! defined($sdom));
6413: $sname = $env{'user.name'} if (! defined($sname));
6414: my $uhome = &homeserver($sname,$sdom);
6415: my $rep;
6416:
6417: if (grep { $_ eq $uhome } current_machine_ids()) {
6418: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6419: $courseid)));
6420: } else {
6421: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6422: }
6423:
6424: return if ($rep =~ /^(error:|no_such_host)/);
6425: #
6426: my %returnhash=();
6427: #
6428: if ($rep eq 'unknown_cmd') {
6429: # an old lond will not know currentdump
6430: # Do a dump and make it look like a currentdump
6431: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6432: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6433: my %hash = @tmp;
6434: @tmp=();
6435: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6436: } else {
6437: my @pairs=split(/\&/,$rep);
6438: foreach my $pair (@pairs) {
6439: my ($key,$value)=split(/=/,$pair,2);
6440: my ($symb,$param) = split(/:/,$key);
6441: $returnhash{&unescape($symb)}->{&unescape($param)} =
6442: &thaw_unescape($value);
6443: }
6444: }
6445: return %returnhash;
6446: }
6447:
6448: sub convert_dump_to_currentdump{
6449: my %hash = %{shift()};
6450: my %returnhash;
6451: # Code ripped from lond, essentially. The only difference
6452: # here is the unescaping done by lonnet::dump(). Conceivably
6453: # we might run in to problems with parameter names =~ /^v\./
6454: while (my ($key,$value) = each(%hash)) {
6455: my ($v,$symb,$param) = split(/:/,$key);
6456: $symb = &unescape($symb);
6457: $param = &unescape($param);
6458: next if ($v eq 'version' || $symb eq 'keys');
6459: next if (exists($returnhash{$symb}) &&
6460: exists($returnhash{$symb}->{$param}) &&
6461: $returnhash{$symb}->{'v.'.$param} > $v);
6462: $returnhash{$symb}->{$param}=$value;
6463: $returnhash{$symb}->{'v.'.$param}=$v;
6464: }
6465: #
6466: # Remove all of the keys in the hashes which keep track of
6467: # the version of the parameter.
6468: while (my ($symb,$param_hash) = each(%returnhash)) {
6469: # use a foreach because we are going to delete from the hash.
6470: foreach my $key (keys(%$param_hash)) {
6471: delete($param_hash->{$key}) if ($key =~ /^v\./);
6472: }
6473: }
6474: return \%returnhash;
6475: }
6476:
6477: # ------------------------------------------------------ critical inc interface
6478:
6479: sub cinc {
6480: return &inc(@_,'critical');
6481: }
6482:
6483: # --------------------------------------------------------------- inc interface
6484:
6485: sub inc {
6486: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6487: if (!$udomain) { $udomain=$env{'user.domain'}; }
6488: if (!$uname) { $uname=$env{'user.name'}; }
6489: my $uhome=&homeserver($uname,$udomain);
6490: my $items='';
6491: if (! ref($store)) {
6492: # got a single value, so use that instead
6493: $items = &escape($store).'=&';
6494: } elsif (ref($store) eq 'SCALAR') {
6495: $items = &escape($$store).'=&';
6496: } elsif (ref($store) eq 'ARRAY') {
6497: $items = join('=&',map {&escape($_);} @{$store});
6498: } elsif (ref($store) eq 'HASH') {
6499: while (my($key,$value) = each(%{$store})) {
6500: $items.= &escape($key).'='.&escape($value).'&';
6501: }
6502: }
6503: $items=~s/\&$//;
6504: if ($critical) {
6505: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6506: } else {
6507: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6508: }
6509: }
6510:
6511: # --------------------------------------------------------------- put interface
6512:
6513: sub put {
6514: my ($namespace,$storehash,$udomain,$uname)=@_;
6515: if (!$udomain) { $udomain=$env{'user.domain'}; }
6516: if (!$uname) { $uname=$env{'user.name'}; }
6517: my $uhome=&homeserver($uname,$udomain);
6518: my $items='';
6519: foreach my $item (keys(%$storehash)) {
6520: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6521: }
6522: $items=~s/\&$//;
6523: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6524: }
6525:
6526: # ------------------------------------------------------------ newput interface
6527:
6528: sub newput {
6529: my ($namespace,$storehash,$udomain,$uname)=@_;
6530: if (!$udomain) { $udomain=$env{'user.domain'}; }
6531: if (!$uname) { $uname=$env{'user.name'}; }
6532: my $uhome=&homeserver($uname,$udomain);
6533: my $items='';
6534: foreach my $key (keys(%$storehash)) {
6535: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6536: }
6537: $items=~s/\&$//;
6538: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6539: }
6540:
6541: # --------------------------------------------------------- putstore interface
6542:
6543: sub putstore {
6544: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6545: if (!$udomain) { $udomain=$env{'user.domain'}; }
6546: if (!$uname) { $uname=$env{'user.name'}; }
6547: my $uhome=&homeserver($uname,$udomain);
6548: my $items='';
6549: foreach my $key (keys(%$storehash)) {
6550: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6551: }
6552: $items=~s/\&$//;
6553: my $esc_symb=&escape($symb);
6554: my $esc_v=&escape($version);
6555: my $reply =
6556: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6557: $uhome);
6558: if (($tolog) && ($reply eq 'ok')) {
6559: my $namevalue='';
6560: foreach my $key (keys(%{$storehash})) {
6561: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6562: }
6563: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6564: '&host='.&escape($perlvar{'lonHostID'}).
6565: '&version='.$esc_v.
6566: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6567: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6568: }
6569: if ($reply eq 'unknown_cmd') {
6570: # gfall back to way things use to be done
6571: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6572: $uname);
6573: }
6574: return $reply;
6575: }
6576:
6577: sub old_putstore {
6578: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6579: if (!$udomain) { $udomain=$env{'user.domain'}; }
6580: if (!$uname) { $uname=$env{'user.name'}; }
6581: my $uhome=&homeserver($uname,$udomain);
6582: my %newstorehash;
6583: foreach my $item (keys(%$storehash)) {
6584: my $key = $version.':'.&escape($symb).':'.$item;
6585: $newstorehash{$key} = $storehash->{$item};
6586: }
6587: my $items='';
6588: my %allitems = ();
6589: foreach my $item (keys(%newstorehash)) {
6590: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6591: my $key = $1.':keys:'.$2;
6592: $allitems{$key} .= $3.':';
6593: }
6594: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6595: }
6596: foreach my $item (keys(%allitems)) {
6597: $allitems{$item} =~ s/\:$//;
6598: $items.= $item.'='.$allitems{$item}.'&';
6599: }
6600: $items=~s/\&$//;
6601: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6602: }
6603:
6604: # ------------------------------------------------------ critical put interface
6605:
6606: sub cput {
6607: my ($namespace,$storehash,$udomain,$uname)=@_;
6608: if (!$udomain) { $udomain=$env{'user.domain'}; }
6609: if (!$uname) { $uname=$env{'user.name'}; }
6610: my $uhome=&homeserver($uname,$udomain);
6611: my $items='';
6612: foreach my $item (keys(%$storehash)) {
6613: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6614: }
6615: $items=~s/\&$//;
6616: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6617: }
6618:
6619: # -------------------------------------------------------------- eget interface
6620:
6621: sub eget {
6622: my ($namespace,$storearr,$udomain,$uname)=@_;
6623: my $items='';
6624: foreach my $item (@$storearr) {
6625: $items.=&escape($item).'&';
6626: }
6627: $items=~s/\&$//;
6628: if (!$udomain) { $udomain=$env{'user.domain'}; }
6629: if (!$uname) { $uname=$env{'user.name'}; }
6630: my $uhome=&homeserver($uname,$udomain);
6631: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6632: my @pairs=split(/\&/,$rep);
6633: my %returnhash=();
6634: my $i=0;
6635: foreach my $item (@$storearr) {
6636: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6637: $i++;
6638: }
6639: return %returnhash;
6640: }
6641:
6642: # ------------------------------------------------------------ tmpput interface
6643: sub tmpput {
6644: my ($storehash,$server,$context)=@_;
6645: my $items='';
6646: foreach my $item (keys(%$storehash)) {
6647: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6648: }
6649: $items=~s/\&$//;
6650: if (defined($context)) {
6651: $items .= ':'.&escape($context);
6652: }
6653: return &reply("tmpput:$items",$server);
6654: }
6655:
6656: # ------------------------------------------------------------ tmpget interface
6657: sub tmpget {
6658: my ($token,$server)=@_;
6659: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6660: my $rep=&reply("tmpget:$token",$server);
6661: my %returnhash;
6662: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6663: return %returnhash;
6664: }
6665: foreach my $item (split(/\&/,$rep)) {
6666: my ($key,$value)=split(/=/,$item);
6667: $returnhash{&unescape($key)}=&thaw_unescape($value);
6668: }
6669: return %returnhash;
6670: }
6671:
6672: # ------------------------------------------------------------ tmpdel interface
6673: sub tmpdel {
6674: my ($token,$server)=@_;
6675: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6676: return &reply("tmpdel:$token",$server);
6677: }
6678:
6679: # ------------------------------------------------------------ get_timebased_id
6680:
6681: sub get_timebased_id {
6682: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6683: $maxtries) = @_;
6684: my ($newid,$error,$dellock);
6685: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6686: return ('','ok','invalid call to get suffix');
6687: }
6688:
6689: # set defaults for any optional args for which values were not supplied
6690: if ($who eq '') {
6691: $who = $env{'user.name'}.':'.$env{'user.domain'};
6692: }
6693: if (!$locktries) {
6694: $locktries = 3;
6695: }
6696: if (!$maxtries) {
6697: $maxtries = 10;
6698: }
6699:
6700: if (($cdom eq '') || ($cnum eq '')) {
6701: if ($env{'request.course.id'}) {
6702: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6703: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6704: }
6705: if (($cdom eq '') || ($cnum eq '')) {
6706: return ('','ok','call to get suffix not in course context');
6707: }
6708: }
6709:
6710: # construct locking item
6711: my $lockhash = {
6712: $prefix."\0".'locked_'.$keyid => $who,
6713: };
6714: my $tries = 0;
6715:
6716: # attempt to get lock on nohist_$namespace file
6717: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6718: while (($gotlock ne 'ok') && $tries <$locktries) {
6719: $tries ++;
6720: sleep 1;
6721: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6722: }
6723:
6724: # attempt to get unique identifier, based on current timestamp
6725: if ($gotlock eq 'ok') {
6726: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6727: my $id = time;
6728: $newid = $id;
6729: if ($idtype eq 'addcode') {
6730: $newid .= &sixnum_code();
6731: }
6732: my $idtries = 0;
6733: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6734: if ($idtype eq 'concat') {
6735: $newid = $id.$idtries;
6736: } elsif ($idtype eq 'addcode') {
6737: $newid = $newid.&sixnum_code();
6738: } else {
6739: $newid ++;
6740: }
6741: $idtries ++;
6742: }
6743: if (!exists($inuse{$prefix."\0".$newid})) {
6744: my %new_item = (
6745: $prefix."\0".$newid => $who,
6746: );
6747: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6748: $cdom,$cnum);
6749: if ($putresult ne 'ok') {
6750: undef($newid);
6751: $error = 'error saving new item: '.$putresult;
6752: }
6753: } else {
6754: undef($newid);
6755: $error = ('error: no unique suffix available for the new item ');
6756: }
6757: # remove lock
6758: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6759: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6760: } else {
6761: $error = "error: could not obtain lockfile\n";
6762: $dellock = 'ok';
6763: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6764: $dellock = 'nolock';
6765: }
6766: }
6767: return ($newid,$dellock,$error);
6768: }
6769:
6770: sub sixnum_code {
6771: my $code;
6772: for (0..6) {
6773: $code .= int( rand(9) );
6774: }
6775: return $code;
6776: }
6777:
6778: # -------------------------------------------------- portfolio access checking
6779:
6780: sub portfolio_access {
6781: my ($requrl,$clientip) = @_;
6782: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6783: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6784: if ($result) {
6785: my %setters;
6786: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6787: my ($startblock,$endblock) =
6788: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6789: if ($startblock && $endblock) {
6790: return 'B';
6791: }
6792: } else {
6793: my ($startblock,$endblock) =
6794: &Apache::loncommon::blockcheck(\%setters,'port');
6795: if ($startblock && $endblock) {
6796: return 'B';
6797: }
6798: }
6799: }
6800: if ($result eq 'ok') {
6801: return 'F';
6802: } elsif ($result =~ /^[^:]+:guest_/) {
6803: return 'A';
6804: }
6805: return '';
6806: }
6807:
6808: sub get_portfolio_access {
6809: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6810:
6811: if (!ref($access_hash)) {
6812: my $current_perms = &get_portfile_permissions($udom,$unum);
6813: my %access_controls = &get_access_controls($current_perms,$group,
6814: $file_name);
6815: $access_hash = $access_controls{$file_name};
6816: }
6817:
6818: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6819: my $now = time;
6820: if (ref($access_hash) eq 'HASH') {
6821: foreach my $key (keys(%{$access_hash})) {
6822: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6823: if ($start > $now) {
6824: next;
6825: }
6826: if ($end && $end<$now) {
6827: next;
6828: }
6829: if ($scope eq 'public') {
6830: $public = $key;
6831: last;
6832: } elsif ($scope eq 'guest') {
6833: $guest = $key;
6834: } elsif ($scope eq 'domains') {
6835: push(@domains,$key);
6836: } elsif ($scope eq 'users') {
6837: push(@users,$key);
6838: } elsif ($scope eq 'course') {
6839: push(@courses,$key);
6840: } elsif ($scope eq 'group') {
6841: push(@groups,$key);
6842: } elsif ($scope eq 'ip') {
6843: push(@ips,$key);
6844: }
6845: }
6846: if ($public) {
6847: return 'ok';
6848: } elsif (@ips > 0) {
6849: my $allowed;
6850: foreach my $ipkey (@ips) {
6851: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6852: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6853: $allowed = 1;
6854: last;
6855: }
6856: }
6857: }
6858: if ($allowed) {
6859: return 'ok';
6860: }
6861: }
6862: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6863: if ($guest) {
6864: return $guest;
6865: }
6866: } else {
6867: if (@domains > 0) {
6868: foreach my $domkey (@domains) {
6869: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6870: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6871: return 'ok';
6872: }
6873: }
6874: }
6875: }
6876: if (@users > 0) {
6877: foreach my $userkey (@users) {
6878: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6879: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6880: if (ref($item) eq 'HASH') {
6881: if (($item->{'uname'} eq $env{'user.name'}) &&
6882: ($item->{'udom'} eq $env{'user.domain'})) {
6883: return 'ok';
6884: }
6885: }
6886: }
6887: }
6888: }
6889: }
6890: my %roleshash;
6891: my @courses_and_groups = @courses;
6892: push(@courses_and_groups,@groups);
6893: if (@courses_and_groups > 0) {
6894: my (%allgroups,%allroles);
6895: my ($start,$end,$role,$sec,$group);
6896: foreach my $envkey (%env) {
6897: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6898: my $cid = $2.'_'.$3;
6899: if ($1 eq 'gr') {
6900: $group = $4;
6901: $allgroups{$cid}{$group} = $env{$envkey};
6902: } else {
6903: if ($4 eq '') {
6904: $sec = 'none';
6905: } else {
6906: $sec = $4;
6907: }
6908: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6909: }
6910: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6911: my $cid = $2.'_'.$3;
6912: if ($4 eq '') {
6913: $sec = 'none';
6914: } else {
6915: $sec = $4;
6916: }
6917: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6918: }
6919: }
6920: if (keys(%allroles) == 0) {
6921: return;
6922: }
6923: foreach my $key (@courses_and_groups) {
6924: my %content = %{$$access_hash{$key}};
6925: my $cnum = $content{'number'};
6926: my $cdom = $content{'domain'};
6927: my $cid = $cdom.'_'.$cnum;
6928: if (!exists($allroles{$cid})) {
6929: next;
6930: }
6931: foreach my $role_id (keys(%{$content{'roles'}})) {
6932: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6933: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6934: my @status = @{$content{'roles'}{$role_id}{'access'}};
6935: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6936: foreach my $role (keys(%{$allroles{$cid}})) {
6937: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6938: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6939: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6940: if (grep/^all$/,@sections) {
6941: return 'ok';
6942: } else {
6943: if (grep/^$sec$/,@sections) {
6944: return 'ok';
6945: }
6946: }
6947: }
6948: }
6949: if (keys(%{$allgroups{$cid}}) == 0) {
6950: if (grep/^none$/,@groups) {
6951: return 'ok';
6952: }
6953: } else {
6954: if (grep/^all$/,@groups) {
6955: return 'ok';
6956: }
6957: foreach my $group (keys(%{$allgroups{$cid}})) {
6958: if (grep/^$group$/,@groups) {
6959: return 'ok';
6960: }
6961: }
6962: }
6963: }
6964: }
6965: }
6966: }
6967: }
6968: if ($guest) {
6969: return $guest;
6970: }
6971: }
6972: }
6973: return;
6974: }
6975:
6976: sub course_group_datechecker {
6977: my ($dates,$now,$status) = @_;
6978: my ($start,$end) = split(/\./,$dates);
6979: if (!$start && !$end) {
6980: return 'ok';
6981: }
6982: if (grep/^active$/,@{$status}) {
6983: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6984: return 'ok';
6985: }
6986: }
6987: if (grep/^previous$/,@{$status}) {
6988: if ($end > $now ) {
6989: return 'ok';
6990: }
6991: }
6992: if (grep/^future$/,@{$status}) {
6993: if ($start > $now) {
6994: return 'ok';
6995: }
6996: }
6997: return;
6998: }
6999:
7000: sub parse_portfolio_url {
7001: my ($url) = @_;
7002:
7003: my ($type,$udom,$unum,$group,$file_name);
7004:
7005: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7006: $type = 1;
7007: $udom = $1;
7008: $unum = $2;
7009: $file_name = $3;
7010: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7011: $type = 2;
7012: $udom = $1;
7013: $unum = $2;
7014: $group = $3;
7015: $file_name = $3.'/'.$4;
7016: }
7017: if (wantarray) {
7018: return ($type,$udom,$unum,$file_name,$group);
7019: }
7020: return $type;
7021: }
7022:
7023: sub is_portfolio_url {
7024: my ($url) = @_;
7025: return scalar(&parse_portfolio_url($url));
7026: }
7027:
7028: sub is_portfolio_file {
7029: my ($file) = @_;
7030: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7031: return 1;
7032: }
7033: return;
7034: }
7035:
7036: sub usertools_access {
7037: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7038: my ($access,%tools);
7039: if ($context eq '') {
7040: $context = 'tools';
7041: }
7042: if ($context eq 'requestcourses') {
7043: %tools = (
7044: official => 1,
7045: unofficial => 1,
7046: community => 1,
7047: textbook => 1,
7048: placement => 1,
7049: );
7050: } elsif ($context eq 'requestauthor') {
7051: %tools = (
7052: requestauthor => 1,
7053: );
7054: } else {
7055: %tools = (
7056: aboutme => 1,
7057: blog => 1,
7058: webdav => 1,
7059: portfolio => 1,
7060: );
7061: }
7062: return if (!defined($tools{$tool}));
7063:
7064: if (($udom eq '') || ($uname eq '')) {
7065: $udom = $env{'user.domain'};
7066: $uname = $env{'user.name'};
7067: }
7068:
7069: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7070: if ($action ne 'reload') {
7071: if ($context eq 'requestcourses') {
7072: return $env{'environment.canrequest.'.$tool};
7073: } elsif ($context eq 'requestauthor') {
7074: return $env{'environment.canrequest.author'};
7075: } else {
7076: return $env{'environment.availabletools.'.$tool};
7077: }
7078: }
7079: }
7080:
7081: my ($toolstatus,$inststatus,$envkey);
7082: if ($context eq 'requestauthor') {
7083: $envkey = $context;
7084: } else {
7085: $envkey = $context.'.'.$tool;
7086: }
7087:
7088: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7089: ($action ne 'reload')) {
7090: $toolstatus = $env{'environment.'.$envkey};
7091: $inststatus = $env{'environment.inststatus'};
7092: } else {
7093: if (ref($userenvref) eq 'HASH') {
7094: $toolstatus = $userenvref->{$envkey};
7095: $inststatus = $userenvref->{'inststatus'};
7096: } else {
7097: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7098: $toolstatus = $userenv{$envkey};
7099: $inststatus = $userenv{'inststatus'};
7100: }
7101: }
7102:
7103: if ($toolstatus ne '') {
7104: if ($toolstatus) {
7105: $access = 1;
7106: } else {
7107: $access = 0;
7108: }
7109: return $access;
7110: }
7111:
7112: my ($is_adv,%domdef);
7113: if (ref($is_advref) eq 'HASH') {
7114: $is_adv = $is_advref->{'is_adv'};
7115: } else {
7116: $is_adv = &is_advanced_user($udom,$uname);
7117: }
7118: if (ref($domdefref) eq 'HASH') {
7119: %domdef = %{$domdefref};
7120: } else {
7121: %domdef = &get_domain_defaults($udom);
7122: }
7123: if (ref($domdef{$tool}) eq 'HASH') {
7124: if ($is_adv) {
7125: if ($domdef{$tool}{'_LC_adv'} ne '') {
7126: if ($domdef{$tool}{'_LC_adv'}) {
7127: $access = 1;
7128: } else {
7129: $access = 0;
7130: }
7131: return $access;
7132: }
7133: }
7134: if ($inststatus ne '') {
7135: my ($hasaccess,$hasnoaccess);
7136: foreach my $affiliation (split(/:/,$inststatus)) {
7137: if ($domdef{$tool}{$affiliation} ne '') {
7138: if ($domdef{$tool}{$affiliation}) {
7139: $hasaccess = 1;
7140: } else {
7141: $hasnoaccess = 1;
7142: }
7143: }
7144: }
7145: if ($hasaccess || $hasnoaccess) {
7146: if ($hasaccess) {
7147: $access = 1;
7148: } elsif ($hasnoaccess) {
7149: $access = 0;
7150: }
7151: return $access;
7152: }
7153: } else {
7154: if ($domdef{$tool}{'default'} ne '') {
7155: if ($domdef{$tool}{'default'}) {
7156: $access = 1;
7157: } elsif ($domdef{$tool}{'default'} == 0) {
7158: $access = 0;
7159: }
7160: return $access;
7161: }
7162: }
7163: } else {
7164: if (($context eq 'tools') && ($tool ne 'webdav')) {
7165: $access = 1;
7166: } else {
7167: $access = 0;
7168: }
7169: return $access;
7170: }
7171: }
7172:
7173: sub is_course_owner {
7174: my ($cdom,$cnum,$udom,$uname) = @_;
7175: if (($udom eq '') || ($uname eq '')) {
7176: $udom = $env{'user.domain'};
7177: $uname = $env{'user.name'};
7178: }
7179: unless (($udom eq '') || ($uname eq '')) {
7180: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7181: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7182: return 1;
7183: } else {
7184: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7185: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7186: return 1;
7187: }
7188: }
7189: }
7190: }
7191: return;
7192: }
7193:
7194: sub is_advanced_user {
7195: my ($udom,$uname) = @_;
7196: if ($udom ne '' && $uname ne '') {
7197: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7198: if (wantarray) {
7199: return ($env{'user.adv'},$env{'user.author'});
7200: } else {
7201: return $env{'user.adv'};
7202: }
7203: }
7204: }
7205: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7206: my %allroles;
7207: my ($is_adv,$is_author);
7208: foreach my $role (keys(%roleshash)) {
7209: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7210: my $area = '/'.$tdomain.'/'.$trest;
7211: if ($sec ne '') {
7212: $area .= '/'.$sec;
7213: }
7214: if (($area ne '') && ($trole ne '')) {
7215: my $spec=$trole.'.'.$area;
7216: if ($trole =~ /^cr\//) {
7217: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7218: } elsif ($trole ne 'gr') {
7219: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7220: }
7221: if ($trole eq 'au') {
7222: $is_author = 1;
7223: }
7224: }
7225: }
7226: foreach my $role (keys(%allroles)) {
7227: last if ($is_adv);
7228: foreach my $item (split(/:/,$allroles{$role})) {
7229: if ($item ne '') {
7230: my ($privilege,$restrictions)=split(/&/,$item);
7231: if ($privilege eq 'adv') {
7232: $is_adv = 1;
7233: last;
7234: }
7235: }
7236: }
7237: }
7238: if (wantarray) {
7239: return ($is_adv,$is_author);
7240: }
7241: return $is_adv;
7242: }
7243:
7244: sub check_can_request {
7245: my ($dom,$can_request,$request_domains) = @_;
7246: my $canreq = 0;
7247: my ($types,$typename) = &Apache::loncommon::course_types();
7248: my @options = ('approval','validate','autolimit');
7249: my $optregex = join('|',@options);
7250: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7251: foreach my $type (@{$types}) {
7252: if (&usertools_access($env{'user.name'},
7253: $env{'user.domain'},
7254: $type,undef,'requestcourses')) {
7255: $canreq ++;
7256: if (ref($request_domains) eq 'HASH') {
7257: push(@{$request_domains->{$type}},$env{'user.domain'});
7258: }
7259: if ($dom eq $env{'user.domain'}) {
7260: $can_request->{$type} = 1;
7261: }
7262: }
7263: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
7264: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7265: if (@curr > 0) {
7266: foreach my $item (@curr) {
7267: if (ref($request_domains) eq 'HASH') {
7268: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7269: if ($otherdom ne '') {
7270: if (ref($request_domains->{$type}) eq 'ARRAY') {
7271: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7272: push(@{$request_domains->{$type}},$otherdom);
7273: }
7274: } else {
7275: push(@{$request_domains->{$type}},$otherdom);
7276: }
7277: }
7278: }
7279: }
7280: unless($dom eq $env{'user.domain'}) {
7281: $canreq ++;
7282: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7283: $can_request->{$type} = 1;
7284: }
7285: }
7286: }
7287: }
7288: }
7289: }
7290: return $canreq;
7291: }
7292:
7293: # ---------------------------------------------- Custom access rule evaluation
7294:
7295: sub customaccess {
7296: my ($priv,$uri)=@_;
7297: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7298: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7299: $udom = &LONCAPA::clean_domain($udom);
7300: $ucrs = &LONCAPA::clean_username($ucrs);
7301: my $access=0;
7302: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7303: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7304: if ($type eq 'user') {
7305: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7306: my ($tdom,$tuname)=split(m{/},$scope);
7307: if ($tdom) {
7308: if ($tdom ne $env{'user.domain'}) { next; }
7309: }
7310: if ($tuname) {
7311: if ($tuname ne $env{'user.name'}) { next; }
7312: }
7313: $access=($effect eq 'allow');
7314: last;
7315: }
7316: } else {
7317: if ($role) {
7318: if ($role ne $urole) { next; }
7319: }
7320: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7321: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7322: if ($tdom) {
7323: if ($tdom ne $udom) { next; }
7324: }
7325: if ($tcrs) {
7326: if ($tcrs ne $ucrs) { next; }
7327: }
7328: if ($tsec) {
7329: if ($tsec ne $usec) { next; }
7330: }
7331: $access=($effect eq 'allow');
7332: last;
7333: }
7334: if ($realm eq '' && $role eq '') {
7335: $access=($effect eq 'allow');
7336: }
7337: }
7338: }
7339: return $access;
7340: }
7341:
7342: # ------------------------------------------------- Check for a user privilege
7343:
7344: sub allowed {
7345: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7346: my $ver_orguri=$uri;
7347: $uri=&deversion($uri);
7348: my $orguri=$uri;
7349: $uri=&declutter($uri);
7350:
7351: if ($priv eq 'evb') {
7352: # Evade communication block restrictions for specified role in a course
7353: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7354: return $1;
7355: } else {
7356: return;
7357: }
7358: }
7359:
7360: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7361: # Free bre access to adm and meta resources
7362: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7363: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7364: && ($priv eq 'bre')) {
7365: return 'F';
7366: }
7367:
7368: # Free bre access to user's own portfolio contents
7369: my ($space,$domain,$name,@dir)=split('/',$uri);
7370: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7371: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7372: my %setters;
7373: my ($startblock,$endblock) =
7374: &Apache::loncommon::blockcheck(\%setters,'port');
7375: if ($startblock && $endblock) {
7376: return 'B';
7377: } else {
7378: return 'F';
7379: }
7380: }
7381:
7382: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7383: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7384: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7385: if (exists($env{'request.course.id'})) {
7386: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7387: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7388: if (($domain eq $cdom) && ($name eq $cnum)) {
7389: my $courseprivid=$env{'request.course.id'};
7390: $courseprivid=~s/\_/\//;
7391: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7392: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7393: return $1;
7394: } else {
7395: if ($env{'request.course.sec'}) {
7396: $courseprivid.='/'.$env{'request.course.sec'};
7397: }
7398: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7399: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7400: return $2;
7401: }
7402: }
7403: }
7404: }
7405: }
7406:
7407: # Free bre to public access
7408:
7409: if ($priv eq 'bre') {
7410: my $copyright=&metadata($uri,'copyright');
7411: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7412: return 'F';
7413: }
7414: if ($copyright eq 'priv') {
7415: $uri=~/([^\/]+)\/([^\/]+)\//;
7416: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7417: return '';
7418: }
7419: }
7420: if ($copyright eq 'domain') {
7421: $uri=~/([^\/]+)\/([^\/]+)\//;
7422: unless (($env{'user.domain'} eq $1) ||
7423: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7424: return '';
7425: }
7426: }
7427: if ($env{'request.role'}=~ /li\.\//) {
7428: # Library role, so allow browsing of resources in this domain.
7429: return 'F';
7430: }
7431: if ($copyright eq 'custom') {
7432: unless (&customaccess($priv,$uri)) { return ''; }
7433: }
7434: }
7435: # Domain coordinator is trying to create a course
7436: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7437: # uri is the requested domain in this case.
7438: # comparison to 'request.role.domain' shows if the user has selected
7439: # a role of dc for the domain in question.
7440: return 'F' if ($uri eq $env{'request.role.domain'});
7441: }
7442:
7443: my $thisallowed='';
7444: my $statecond=0;
7445: my $courseprivid='';
7446:
7447: my $ownaccess;
7448: # Community Coordinator or Assistant Co-author browsing resource space.
7449: if (($priv eq 'bro') && ($env{'user.author'})) {
7450: if ($uri eq '') {
7451: $ownaccess = 1;
7452: } else {
7453: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7454: my $udom = $env{'user.domain'};
7455: my $uname = $env{'user.name'};
7456: if ($uri =~ m{^\Q$udom\E/?$}) {
7457: $ownaccess = 1;
7458: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7459: unless ($uri =~ m{\.\./}) {
7460: $ownaccess = 1;
7461: }
7462: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7463: my $now = time;
7464: if ($uri =~ m{^([^/]+)/?$}) {
7465: my $adom = $1;
7466: foreach my $key (keys(%env)) {
7467: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7468: my ($start,$end) = split('.',$env{$key});
7469: if (($now >= $start) && (!$end || $end < $now)) {
7470: $ownaccess = 1;
7471: last;
7472: }
7473: }
7474: }
7475: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7476: my $adom = $1;
7477: my $aname = $2;
7478: foreach my $role ('ca','aa') {
7479: if ($env{"user.role.$role./$adom/$aname"}) {
7480: my ($start,$end) =
7481: split('.',$env{"user.role.$role./$adom/$aname"});
7482: if (($now >= $start) && (!$end || $end < $now)) {
7483: $ownaccess = 1;
7484: last;
7485: }
7486: }
7487: }
7488: }
7489: }
7490: }
7491: }
7492: }
7493:
7494: # Course
7495:
7496: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7497: unless (($priv eq 'bro') && (!$ownaccess)) {
7498: $thisallowed.=$1;
7499: }
7500: }
7501:
7502: # Domain
7503:
7504: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7505: =~/\Q$priv\E\&([^\:]*)/) {
7506: unless (($priv eq 'bro') && (!$ownaccess)) {
7507: $thisallowed.=$1;
7508: }
7509: }
7510:
7511: # User who is not author or co-author might still be able to edit
7512: # resource of an author in the domain (e.g., if Domain Coordinator).
7513: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7514: (&allowed('mdc',$env{'request.course.id'}))) {
7515: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7516: $thisallowed.=$1;
7517: }
7518: }
7519:
7520: # Course: uri itself is a course
7521: my $courseuri=$uri;
7522: $courseuri=~s/\_(\d)/\/$1/;
7523: $courseuri=~s/^([^\/])/\/$1/;
7524:
7525: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7526: =~/\Q$priv\E\&([^\:]*)/) {
7527: unless (($priv eq 'bro') && (!$ownaccess)) {
7528: $thisallowed.=$1;
7529: }
7530: }
7531:
7532: # URI is an uploaded document for this course, default permissions don't matter
7533: # not allowing 'edit' access (editupload) to uploaded course docs
7534: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7535: $thisallowed='';
7536: my ($match)=&is_on_map($uri);
7537: if ($match) {
7538: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7539: =~/\Q$priv\E\&([^\:]*)/) {
7540: my $value = $1;
7541: if ($noblockcheck) {
7542: $thisallowed.=$value;
7543: } else {
7544: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7545: if (@blockers > 0) {
7546: $thisallowed = 'B';
7547: } else {
7548: $thisallowed.=$value;
7549: }
7550: }
7551: }
7552: } else {
7553: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7554: if ($refuri) {
7555: if ($refuri =~ m|^/adm/|) {
7556: $thisallowed='F';
7557: } else {
7558: $refuri=&declutter($refuri);
7559: my ($match) = &is_on_map($refuri);
7560: if ($match) {
7561: if ($noblockcheck) {
7562: $thisallowed='F';
7563: } else {
7564: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7565: if (@blockers > 0) {
7566: $thisallowed = 'B';
7567: } else {
7568: $thisallowed='F';
7569: }
7570: }
7571: }
7572: }
7573: }
7574: }
7575: }
7576:
7577: if ($priv eq 'bre'
7578: && $thisallowed ne 'F'
7579: && $thisallowed ne '2'
7580: && &is_portfolio_url($uri)) {
7581: $thisallowed = &portfolio_access($uri,$clientip);
7582: }
7583:
7584: # Full access at system, domain or course-wide level? Exit.
7585: if ($thisallowed=~/F/) {
7586: return 'F';
7587: }
7588:
7589: # If this is generating or modifying users, exit with special codes
7590:
7591: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7592: if (($priv eq 'cca') || ($priv eq 'caa')) {
7593: my ($audom,$auname)=split('/',$uri);
7594: # no author name given, so this just checks on the general right to make a co-author in this domain
7595: unless ($auname) { return $thisallowed; }
7596: # an author name is given, so we are about to actually make a co-author for a certain account
7597: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7598: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7599: ($audom ne $env{'request.role.domain'}))) { return ''; }
7600: }
7601: return $thisallowed;
7602: }
7603: #
7604: # Gathered so far: system, domain and course wide privileges
7605: #
7606: # Course: See if uri or referer is an individual resource that is part of
7607: # the course
7608:
7609: if ($env{'request.course.id'}) {
7610:
7611: $courseprivid=$env{'request.course.id'};
7612: if ($env{'request.course.sec'}) {
7613: $courseprivid.='/'.$env{'request.course.sec'};
7614: }
7615: $courseprivid=~s/\_/\//;
7616: my $checkreferer=1;
7617: my ($match,$cond)=&is_on_map($uri);
7618: if ($match) {
7619: $statecond=$cond;
7620: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7621: =~/\Q$priv\E\&([^\:]*)/) {
7622: my $value = $1;
7623: if ($priv eq 'bre') {
7624: if ($noblockcheck) {
7625: $thisallowed.=$value;
7626: } else {
7627: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7628: if (@blockers > 0) {
7629: $thisallowed = 'B';
7630: } else {
7631: $thisallowed.=$value;
7632: }
7633: }
7634: } else {
7635: $thisallowed.=$value;
7636: }
7637: $checkreferer=0;
7638: }
7639: }
7640:
7641: if ($checkreferer) {
7642: my $refuri=$env{'httpref.'.$orguri};
7643: unless ($refuri) {
7644: foreach my $key (keys(%env)) {
7645: if ($key=~/^httpref\..*\*/) {
7646: my $pattern=$key;
7647: $pattern=~s/^httpref\.\/res\///;
7648: $pattern=~s/\*/\[\^\/\]\+/g;
7649: $pattern=~s/\//\\\//g;
7650: if ($orguri=~/$pattern/) {
7651: $refuri=$env{$key};
7652: }
7653: }
7654: }
7655: }
7656:
7657: if ($refuri) {
7658: $refuri=&declutter($refuri);
7659: my ($match,$cond)=&is_on_map($refuri);
7660: if ($match) {
7661: my $refstatecond=$cond;
7662: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7663: =~/\Q$priv\E\&([^\:]*)/) {
7664: my $value = $1;
7665: if ($priv eq 'bre') {
7666: if ($noblockcheck) {
7667: $thisallowed.=$value;
7668: } else {
7669: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7670: if (@blockers > 0) {
7671: $thisallowed = 'B';
7672: } else {
7673: $thisallowed.=$value;
7674: }
7675: }
7676: } else {
7677: $thisallowed.=$value;
7678: }
7679: $uri=$refuri;
7680: $statecond=$refstatecond;
7681: }
7682: }
7683: }
7684: }
7685: }
7686:
7687: #
7688: # Gathered now: all privileges that could apply, and condition number
7689: #
7690: #
7691: # Full or no access?
7692: #
7693:
7694: if ($thisallowed=~/F/) {
7695: return 'F';
7696: }
7697:
7698: unless ($thisallowed) {
7699: return '';
7700: }
7701:
7702: # Restrictions exist, deal with them
7703: #
7704: # C:according to course preferences
7705: # R:according to resource settings
7706: # L:unless locked
7707: # X:according to user session state
7708: #
7709:
7710: # Possibly locked functionality, check all courses
7711: # Locks might take effect only after 10 minutes cache expiration for other
7712: # courses, and 2 minutes for current course
7713:
7714: my $envkey;
7715: if ($thisallowed=~/L/) {
7716: foreach $envkey (keys(%env)) {
7717: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7718: my $courseid=$2;
7719: my $roleid=$1.'.'.$2;
7720: $courseid=~s/^\///;
7721: my $expiretime=600;
7722: if ($env{'request.role'} eq $roleid) {
7723: $expiretime=120;
7724: }
7725: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7726: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7727: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7728: &coursedescription($courseid,{'freshen_cache' => 1});
7729: }
7730: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7731: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7732: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7733: &log($env{'user.domain'},$env{'user.name'},
7734: $env{'user.home'},
7735: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7736: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7737: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7738: return '';
7739: }
7740: }
7741: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7742: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7743: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7744: &log($env{'user.domain'},$env{'user.name'},
7745: $env{'user.home'},
7746: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7747: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7748: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7749: return '';
7750: }
7751: }
7752: }
7753: }
7754: }
7755:
7756: #
7757: # Rest of the restrictions depend on selected course
7758: #
7759:
7760: unless ($env{'request.course.id'}) {
7761: if ($thisallowed eq 'A') {
7762: return 'A';
7763: } elsif ($thisallowed eq 'B') {
7764: return 'B';
7765: } else {
7766: return '1';
7767: }
7768: }
7769:
7770: #
7771: # Now user is definitely in a course
7772: #
7773:
7774:
7775: # Course preferences
7776:
7777: if ($thisallowed=~/C/) {
7778: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7779: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7780: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7781: =~/\Q$rolecode\E/) {
7782: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7783: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7784: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7785: $env{'request.course.id'});
7786: }
7787: return '';
7788: }
7789:
7790: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7791: =~/\Q$unamedom\E/) {
7792: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7793: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7794: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7795: $env{'request.course.id'});
7796: }
7797: return '';
7798: }
7799: }
7800:
7801: # Resource preferences
7802:
7803: if ($thisallowed=~/R/) {
7804: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7805: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7806: if (($priv ne 'pch') && ($priv ne 'plc')) {
7807: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7808: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7809: }
7810: return '';
7811: }
7812: }
7813:
7814: # Restricted by state or randomout?
7815:
7816: if ($thisallowed=~/X/) {
7817: if ($env{'acc.randomout'}) {
7818: if (!$symb) { $symb=&symbread($uri,1); }
7819: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7820: return '';
7821: }
7822: }
7823: if (&condval($statecond)) {
7824: return '2';
7825: } else {
7826: return '';
7827: }
7828: }
7829:
7830: if ($thisallowed eq 'A') {
7831: return 'A';
7832: } elsif ($thisallowed eq 'B') {
7833: return 'B';
7834: }
7835: return 'F';
7836: }
7837:
7838: # ------------------------------------------- Check construction space access
7839:
7840: sub constructaccess {
7841: my ($url,$setpriv)=@_;
7842:
7843: # We do not allow editing of previous versions of files
7844: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7845:
7846: # Get username and domain from URL
7847: my ($ownername,$ownerdomain,$ownerhome);
7848:
7849: ($ownerdomain,$ownername) =
7850: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
7851:
7852: # The URL does not really point to any authorspace, forget it
7853: unless (($ownername) && ($ownerdomain)) { return ''; }
7854:
7855: # Now we need to see if the user has access to the authorspace of
7856: # $ownername at $ownerdomain
7857:
7858: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7859: # Real author for this?
7860: $ownerhome = $env{'user.home'};
7861: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7862: return ($ownername,$ownerdomain,$ownerhome);
7863: }
7864: } else {
7865: # Co-author for this?
7866: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7867: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7868: $ownerhome = &homeserver($ownername,$ownerdomain);
7869: return ($ownername,$ownerdomain,$ownerhome);
7870: }
7871: if ($env{'request.course.id'}) {
7872: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
7873: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
7874: if (&allowed('mdc',$env{'request.course.id'})) {
7875: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
7876: return ($ownername,$ownerdomain,$ownerhome);
7877: }
7878: }
7879: }
7880: }
7881:
7882: # We don't have any access right now. If we are not possibly going to do anything about this,
7883: # we might as well leave
7884: unless ($setpriv) { return ''; }
7885:
7886: # Backdoor access?
7887: my $allowed=&allowed('eco',$ownerdomain);
7888: # Nope
7889: unless ($allowed) { return ''; }
7890: # Looks like we may have access, but could be locked by the owner of the construction space
7891: if ($allowed eq 'U') {
7892: my %blocked=&get('environment',['domcoord.author'],
7893: $ownerdomain,$ownername);
7894: # Is blocked by owner
7895: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7896: }
7897: if (($allowed eq 'F') || ($allowed eq 'U')) {
7898: # Grant temporary access
7899: my $then=$env{'user.login.time'};
7900: my $update=$env{'user.update.time'};
7901: if (!$update) { $update = $then; }
7902: my $refresh=$env{'user.refresh.time'};
7903: if (!$refresh) { $refresh = $update; }
7904: my $now = time;
7905: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7906: $now,'ca','constructaccess');
7907: $ownerhome = &homeserver($ownername,$ownerdomain);
7908: return($ownername,$ownerdomain,$ownerhome);
7909: }
7910: # No business here
7911: return '';
7912: }
7913:
7914: # ----------------------------------------------------------- Content Blocking
7915:
7916: {
7917: # Caches for faster Course Contents display where content blocking
7918: # is in operation (i.e., interval param set) for timed quiz.
7919: #
7920: # User for whom data are being temporarily cached.
7921: my $cacheduser='';
7922: # Cached blockers for this user (a hash of blocking items).
7923: my %cachedblockers=();
7924: # When the data were last cached.
7925: my $cachedlast='';
7926:
7927: sub load_all_blockers {
7928: my ($uname,$udom,$blocks)=@_;
7929: if (($uname ne '') && ($udom ne '')) {
7930: if (($cacheduser eq $uname.':'.$udom) &&
7931: (abs($cachedlast-time)<5)) {
7932: return;
7933: }
7934: }
7935: $cachedlast=time;
7936: $cacheduser=$uname.':'.$udom;
7937: %cachedblockers = &get_commblock_resources($blocks);
7938: }
7939:
7940: sub get_comm_blocks {
7941: my ($cdom,$cnum) = @_;
7942: if ($cdom eq '' || $cnum eq '') {
7943: return unless ($env{'request.course.id'});
7944: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7945: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7946: }
7947: my %commblocks;
7948: my $hashid=$cdom.'_'.$cnum;
7949: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7950: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7951: %commblocks = %{$blocksref};
7952: } else {
7953: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7954: my $cachetime = 600;
7955: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7956: }
7957: return %commblocks;
7958: }
7959:
7960: sub get_commblock_resources {
7961: my ($blocks) = @_;
7962: my %blockers = ();
7963: return %blockers unless ($env{'request.course.id'});
7964: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7965: my %commblocks;
7966: if (ref($blocks) eq 'HASH') {
7967: %commblocks = %{$blocks};
7968: } else {
7969: %commblocks = &get_comm_blocks();
7970: }
7971: return %blockers unless (keys(%commblocks) > 0);
7972: my $navmap = Apache::lonnavmaps::navmap->new();
7973: return %blockers unless (ref($navmap));
7974: my $now = time;
7975: foreach my $block (keys(%commblocks)) {
7976: if ($block =~ /^(\d+)____(\d+)$/) {
7977: my ($start,$end) = ($1,$2);
7978: if ($start <= $now && $end >= $now) {
7979: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7980: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7981: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7982: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7983: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7984: }
7985: }
7986: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7987: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7988: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7989: }
7990: }
7991: }
7992: }
7993: }
7994: } elsif ($block =~ /^firstaccess____(.+)$/) {
7995: my $item = $1;
7996: my @to_test;
7997: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7998: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7999: my @interval;
8000: my $type = 'map';
8001: if ($item eq 'course') {
8002: $type = 'course';
8003: @interval=&EXT("resource.0.interval");
8004: } else {
8005: if ($item =~ /___\d+___/) {
8006: $type = 'resource';
8007: @interval=&EXT("resource.0.interval",$item);
8008: if (ref($navmap)) {
8009: my $res = $navmap->getBySymb($item);
8010: push(@to_test,$res);
8011: }
8012: } else {
8013: my $mapsymb = &symbread($item,1);
8014: if ($mapsymb) {
8015: if (ref($navmap)) {
8016: my $mapres = $navmap->getBySymb($mapsymb);
8017: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8018: foreach my $res (@to_test) {
8019: my $symb = $res->symb();
8020: next if ($symb eq $mapsymb);
8021: if ($symb ne '') {
8022: @interval=&EXT("resource.0.interval",$symb);
8023: if ($interval[1] eq 'map') {
8024: last;
8025: }
8026: }
8027: }
8028: }
8029: }
8030: }
8031: }
8032: if ($interval[0] =~ /^(\d+)/) {
8033: my $timelimit = $1;
8034: my $first_access;
8035: if ($type eq 'resource') {
8036: $first_access=&get_first_access($interval[1],$item);
8037: } elsif ($type eq 'map') {
8038: $first_access=&get_first_access($interval[1],undef,$item);
8039: } else {
8040: $first_access=&get_first_access($interval[1]);
8041: }
8042: if ($first_access) {
8043: my $timesup = $first_access+$timelimit;
8044: if ($timesup > $now) {
8045: my $activeblock;
8046: foreach my $res (@to_test) {
8047: if ($res->answerable()) {
8048: $activeblock = 1;
8049: last;
8050: }
8051: }
8052: if ($activeblock) {
8053: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8054: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8055: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8056: }
8057: }
8058: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8059: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8060: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8061: }
8062: }
8063: }
8064: }
8065: }
8066: }
8067: }
8068: }
8069: }
8070: }
8071: return %blockers;
8072: }
8073:
8074: sub has_comm_blocking {
8075: my ($priv,$symb,$uri,$blocks) = @_;
8076: my @blockers;
8077: return unless ($env{'request.course.id'});
8078: return unless ($priv eq 'bre');
8079: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8080: return if ($env{'request.state'} eq 'construct');
8081: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8082: return unless (keys(%cachedblockers) > 0);
8083: my (%possibles,@symbs);
8084: if (!$symb) {
8085: $symb = &symbread($uri,1,1,1,\%possibles);
8086: }
8087: if ($symb) {
8088: @symbs = ($symb);
8089: } elsif (keys(%possibles)) {
8090: @symbs = keys(%possibles);
8091: }
8092: my $noblock;
8093: foreach my $symb (@symbs) {
8094: last if ($noblock);
8095: my ($map,$resid,$resurl)=&decode_symb($symb);
8096: foreach my $block (keys(%cachedblockers)) {
8097: if ($block =~ /^firstaccess____(.+)$/) {
8098: my $item = $1;
8099: if (($item eq $map) || ($item eq $symb)) {
8100: $noblock = 1;
8101: last;
8102: }
8103: }
8104: if (ref($cachedblockers{$block}) eq 'HASH') {
8105: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8106: if ($cachedblockers{$block}{'resources'}{$symb}) {
8107: unless (grep(/^\Q$block\E$/,@blockers)) {
8108: push(@blockers,$block);
8109: }
8110: }
8111: }
8112: }
8113: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8114: if ($cachedblockers{$block}{'maps'}{$map}) {
8115: unless (grep(/^\Q$block\E$/,@blockers)) {
8116: push(@blockers,$block);
8117: }
8118: }
8119: }
8120: }
8121: }
8122: return if ($noblock);
8123: return @blockers;
8124: }
8125: }
8126:
8127: # -------------------------------- Deversion and split uri into path an filename
8128:
8129: #
8130: # Removes the version from a URI and
8131: # splits it in to its filename and path to the filename.
8132: # Seems like File::Basename could have done this more clearly.
8133: # Parameters:
8134: # $uri - input URI
8135: # Returns:
8136: # Two element list consisting of
8137: # $pathname - the URI up to and excluding the trailing /
8138: # $filename - The part of the URI following the last /
8139: # NOTE:
8140: # Another realization of this is simply:
8141: # use File::Basename;
8142: # ...
8143: # $uri = shift;
8144: # $filename = basename($uri);
8145: # $path = dirname($uri);
8146: # return ($filename, $path);
8147: #
8148: # The implementation below is probably faster however.
8149: #
8150: sub split_uri_for_cond {
8151: my $uri=&deversion(&declutter(shift));
8152: my @uriparts=split(/\//,$uri);
8153: my $filename=pop(@uriparts);
8154: my $pathname=join('/',@uriparts);
8155: return ($pathname,$filename);
8156: }
8157: # --------------------------------------------------- Is a resource on the map?
8158:
8159: sub is_on_map {
8160: my ($pathname,$filename) = &split_uri_for_cond(shift);
8161: #Trying to find the conditional for the file
8162: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8163: /\&\Q$filename\E\:([\d\|]+)\&/);
8164: if ($match) {
8165: return (1,$1);
8166: } else {
8167: return (0,0);
8168: }
8169: }
8170:
8171: # --------------------------------------------------------- Get symb from alias
8172:
8173: sub get_symb_from_alias {
8174: my $symb=shift;
8175: my ($map,$resid,$url)=&decode_symb($symb);
8176: # Already is a symb
8177: if ($url) { return $symb; }
8178: # Must be an alias
8179: my $aliassymb='';
8180: my %bighash;
8181: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8182: &GDBM_READER(),0640)) {
8183: my $rid=$bighash{'mapalias_'.$symb};
8184: if ($rid) {
8185: my ($mapid,$resid)=split(/\./,$rid);
8186: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8187: $resid,$bighash{'src_'.$rid});
8188: }
8189: untie %bighash;
8190: }
8191: return $aliassymb;
8192: }
8193:
8194: # ----------------------------------------------------------------- Define Role
8195:
8196: sub definerole {
8197: if (allowed('mcr','/')) {
8198: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8199: foreach my $role (split(':',$sysrole)) {
8200: my ($crole,$cqual)=split(/\&/,$role);
8201: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8202: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8203: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8204: return "refused:s:$crole&$cqual";
8205: }
8206: }
8207: }
8208: foreach my $role (split(':',$domrole)) {
8209: my ($crole,$cqual)=split(/\&/,$role);
8210: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8211: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8212: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8213: return "refused:d:$crole&$cqual";
8214: }
8215: }
8216: }
8217: foreach my $role (split(':',$courole)) {
8218: my ($crole,$cqual)=split(/\&/,$role);
8219: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8220: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8221: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8222: return "refused:c:$crole&$cqual";
8223: }
8224: }
8225: }
8226: my $uhome;
8227: if (($uname ne '') && ($udom ne '')) {
8228: $uhome = &homeserver($uname,$udom);
8229: return $uhome if ($uhome eq 'no_host');
8230: } else {
8231: $uname = $env{'user.name'};
8232: $udom = $env{'user.domain'};
8233: $uhome = $env{'user.home'};
8234: }
8235: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8236: "$udom:$uname:rolesdef_$rolename=".
8237: escape($sysrole.'_'.$domrole.'_'.$courole);
8238: return reply($command,$uhome);
8239: } else {
8240: return 'refused';
8241: }
8242: }
8243:
8244: # ---------------- Make a metadata query against the network of library servers
8245:
8246: sub metadata_query {
8247: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8248: my %rhash;
8249: my %libserv = &all_library();
8250: my @server_list = (defined($server_array) ? @$server_array
8251: : keys(%libserv) );
8252: for my $server (@server_list) {
8253: my $domains = '';
8254: if (ref($domains_hash) eq 'HASH') {
8255: $domains = $domains_hash->{$server};
8256: }
8257: unless ($custom or $customshow) {
8258: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8259: $rhash{$server}=$reply;
8260: }
8261: else {
8262: my $reply=&reply("querysend:".&escape($query).':'.
8263: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8264: $server);
8265: $rhash{$server}=$reply;
8266: }
8267: }
8268: return \%rhash;
8269: }
8270:
8271: # ----------------------------------------- Send log queries and wait for reply
8272:
8273: sub log_query {
8274: my ($uname,$udom,$query,%filters)=@_;
8275: my $uhome=&homeserver($uname,$udom);
8276: if ($uhome eq 'no_host') { return 'error: no_host'; }
8277: my $uhost=&hostname($uhome);
8278: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8279: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8280: $uhome);
8281: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8282: return get_query_reply($queryid);
8283: }
8284:
8285: # -------------------------- Update MySQL table for portfolio file
8286:
8287: sub update_portfolio_table {
8288: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8289: if ($group ne '') {
8290: $file_name =~s /^\Q$group\E//;
8291: }
8292: my $homeserver = &homeserver($uname,$udom);
8293: my $queryid=
8294: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8295: ':'.&escape($file_name).':'.$action,$homeserver);
8296: my $reply = &get_query_reply($queryid);
8297: return $reply;
8298: }
8299:
8300: # -------------------------- Update MySQL allusers table
8301:
8302: sub update_allusers_table {
8303: my ($uname,$udom,$names) = @_;
8304: my $homeserver = &homeserver($uname,$udom);
8305: my $queryid=
8306: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8307: 'lastname='.&escape($names->{'lastname'}).'%%'.
8308: 'firstname='.&escape($names->{'firstname'}).'%%'.
8309: 'middlename='.&escape($names->{'middlename'}).'%%'.
8310: 'generation='.&escape($names->{'generation'}).'%%'.
8311: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8312: 'id='.&escape($names->{'id'}),$homeserver);
8313: return;
8314: }
8315:
8316: # ------- Request retrieval of institutional classlists for course(s)
8317:
8318: sub fetch_enrollment_query {
8319: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8320: my ($homeserver,$sleep,$loopmax);
8321: my $maxtries = 1;
8322: if ($context eq 'automated') {
8323: $homeserver = $perlvar{'lonHostID'};
8324: $sleep = 2;
8325: $loopmax = 100;
8326: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8327: } else {
8328: $homeserver = &homeserver($cnum,$dom);
8329: }
8330: my $host=&hostname($homeserver);
8331: my $cmd = '';
8332: foreach my $affiliate (keys(%{$affiliatesref})) {
8333: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8334: }
8335: $cmd =~ s/%%$//;
8336: $cmd = &escape($cmd);
8337: my $query = 'fetchenrollment';
8338: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8339: unless ($queryid=~/^\Q$host\E\_/) {
8340: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8341: return 'error: '.$queryid;
8342: }
8343: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8344: my $tries = 1;
8345: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8346: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8347: $tries ++;
8348: }
8349: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8350: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8351: } else {
8352: my @responses = split(/:/,$reply);
8353: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8354: foreach my $line (@responses) {
8355: my ($key,$value) = split(/=/,$line,2);
8356: $$replyref{$key} = $value;
8357: }
8358: } else {
8359: my $pathname = LONCAPA::tempdir();
8360: foreach my $line (@responses) {
8361: my ($key,$value) = split(/=/,$line);
8362: $$replyref{$key} = $value;
8363: if ($value > 0) {
8364: foreach my $item (@{$$affiliatesref{$key}}) {
8365: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8366: my $destname = $pathname.'/'.$filename;
8367: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8368: if ($xml_classlist =~ /^error/) {
8369: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8370: } else {
8371: if ( open(FILE,">$destname") ) {
8372: print FILE &unescape($xml_classlist);
8373: close(FILE);
8374: } else {
8375: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8376: }
8377: }
8378: }
8379: }
8380: }
8381: }
8382: return 'ok';
8383: }
8384: return 'error';
8385: }
8386:
8387: sub get_query_reply {
8388: my ($queryid,$sleep,$loopmax) = @_;;
8389: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8390: $sleep = 0.2;
8391: }
8392: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8393: $loopmax = 100;
8394: }
8395: my $replyfile=LONCAPA::tempdir().$queryid;
8396: my $reply='';
8397: for (1..$loopmax) {
8398: sleep($sleep);
8399: if (-e $replyfile.'.end') {
8400: if (open(my $fh,$replyfile)) {
8401: $reply = join('',<$fh>);
8402: close($fh);
8403: } else { return 'error: reply_file_error'; }
8404: return &unescape($reply);
8405: }
8406: }
8407: return 'timeout:'.$queryid;
8408: }
8409:
8410: sub courselog_query {
8411: #
8412: # possible filters:
8413: # url: url or symb
8414: # username
8415: # domain
8416: # action: view, submit, grade
8417: # start: timestamp
8418: # end: timestamp
8419: #
8420: my (%filters)=@_;
8421: unless ($env{'request.course.id'}) { return 'no_course'; }
8422: if ($filters{'url'}) {
8423: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8424: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8425: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8426: }
8427: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8428: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8429: return &log_query($cname,$cdom,'courselog',%filters);
8430: }
8431:
8432: sub userlog_query {
8433: #
8434: # possible filters:
8435: # action: log check role
8436: # start: timestamp
8437: # end: timestamp
8438: #
8439: my ($uname,$udom,%filters)=@_;
8440: return &log_query($uname,$udom,'userlog',%filters);
8441: }
8442:
8443: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8444:
8445: sub auto_run {
8446: my ($cnum,$cdom) = @_;
8447: my $response = 0;
8448: my $settings;
8449: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8450: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8451: $settings = $domconfig{'autoenroll'};
8452: if ($settings->{'run'} eq '1') {
8453: $response = 1;
8454: }
8455: } else {
8456: my $homeserver;
8457: if (&is_course($cdom,$cnum)) {
8458: $homeserver = &homeserver($cnum,$cdom);
8459: } else {
8460: $homeserver = &domain($cdom,'primary');
8461: }
8462: if ($homeserver ne 'no_host') {
8463: $response = &reply('autorun:'.$cdom,$homeserver);
8464: }
8465: }
8466: return $response;
8467: }
8468:
8469: sub auto_get_sections {
8470: my ($cnum,$cdom,$inst_coursecode) = @_;
8471: my $homeserver;
8472: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8473: $homeserver = &homeserver($cnum,$cdom);
8474: }
8475: if (!defined($homeserver)) {
8476: if ($cdom =~ /^$match_domain$/) {
8477: $homeserver = &domain($cdom,'primary');
8478: }
8479: }
8480: my @secs;
8481: if (defined($homeserver)) {
8482: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8483: unless ($response eq 'refused') {
8484: @secs = split(/:/,$response);
8485: }
8486: }
8487: return @secs;
8488: }
8489:
8490: sub auto_new_course {
8491: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8492: my $homeserver = &homeserver($cnum,$cdom);
8493: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8494: return $response;
8495: }
8496:
8497: sub auto_validate_courseID {
8498: my ($cnum,$cdom,$inst_course_id) = @_;
8499: my $homeserver = &homeserver($cnum,$cdom);
8500: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8501: return $response;
8502: }
8503:
8504: sub auto_validate_instcode {
8505: my ($cnum,$cdom,$instcode,$owner) = @_;
8506: my ($homeserver,$response);
8507: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8508: $homeserver = &homeserver($cnum,$cdom);
8509: }
8510: if (!defined($homeserver)) {
8511: if ($cdom =~ /^$match_domain$/) {
8512: $homeserver = &domain($cdom,'primary');
8513: }
8514: }
8515: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8516: &escape($instcode).':'.&escape($owner),$homeserver));
8517: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8518: return ($outcome,$description,$defaultcredits);
8519: }
8520:
8521: sub auto_create_password {
8522: my ($cnum,$cdom,$authparam,$udom) = @_;
8523: my ($homeserver,$response);
8524: my $create_passwd = 0;
8525: my $authchk = '';
8526: if ($udom =~ /^$match_domain$/) {
8527: $homeserver = &domain($udom,'primary');
8528: }
8529: if ($homeserver eq '') {
8530: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8531: $homeserver = &homeserver($cnum,$cdom);
8532: }
8533: }
8534: if ($homeserver eq '') {
8535: $authchk = 'nodomain';
8536: } else {
8537: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8538: if ($response eq 'refused') {
8539: $authchk = 'refused';
8540: } else {
8541: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8542: }
8543: }
8544: return ($authparam,$create_passwd,$authchk);
8545: }
8546:
8547: sub auto_photo_permission {
8548: my ($cnum,$cdom,$students) = @_;
8549: my $homeserver = &homeserver($cnum,$cdom);
8550: my ($outcome,$perm_reqd,$conditions) =
8551: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8552: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8553: return (undef,undef);
8554: }
8555: return ($outcome,$perm_reqd,$conditions);
8556: }
8557:
8558: sub auto_checkphotos {
8559: my ($uname,$udom,$pid) = @_;
8560: my $homeserver = &homeserver($uname,$udom);
8561: my ($result,$resulttype);
8562: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8563: &escape($uname).':'.&escape($pid),
8564: $homeserver));
8565: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8566: return (undef,undef);
8567: }
8568: if ($outcome) {
8569: ($result,$resulttype) = split(/:/,$outcome);
8570: }
8571: return ($result,$resulttype);
8572: }
8573:
8574: sub auto_photochoice {
8575: my ($cnum,$cdom) = @_;
8576: my $homeserver = &homeserver($cnum,$cdom);
8577: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8578: &escape($cdom),
8579: $homeserver)));
8580: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8581: return (undef,undef);
8582: }
8583: return ($update,$comment);
8584: }
8585:
8586: sub auto_photoupdate {
8587: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8588: my $homeserver = &homeserver($cnum,$dom);
8589: my $host=&hostname($homeserver);
8590: my $cmd = '';
8591: my $maxtries = 1;
8592: foreach my $affiliate (keys(%{$affiliatesref})) {
8593: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8594: }
8595: $cmd =~ s/%%$//;
8596: $cmd = &escape($cmd);
8597: my $query = 'institutionalphotos';
8598: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8599: unless ($queryid=~/^\Q$host\E\_/) {
8600: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8601: return 'error: '.$queryid;
8602: }
8603: my $reply = &get_query_reply($queryid);
8604: my $tries = 1;
8605: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8606: $reply = &get_query_reply($queryid);
8607: $tries ++;
8608: }
8609: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8610: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8611: } else {
8612: my @responses = split(/:/,$reply);
8613: my $outcome = shift(@responses);
8614: foreach my $item (@responses) {
8615: my ($key,$value) = split(/=/,$item);
8616: $$photo{$key} = $value;
8617: }
8618: return $outcome;
8619: }
8620: return 'error';
8621: }
8622:
8623: sub auto_instcode_format {
8624: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8625: $cat_order) = @_;
8626: my $courses = '';
8627: my @homeservers;
8628: if ($caller eq 'global') {
8629: my %servers = &get_servers($codedom,'library');
8630: foreach my $tryserver (keys(%servers)) {
8631: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8632: push(@homeservers,$tryserver);
8633: }
8634: }
8635: } elsif ($caller eq 'requests') {
8636: if ($codedom =~ /^$match_domain$/) {
8637: my $chome = &domain($codedom,'primary');
8638: unless ($chome eq 'no_host') {
8639: push(@homeservers,$chome);
8640: }
8641: }
8642: } else {
8643: push(@homeservers,&homeserver($caller,$codedom));
8644: }
8645: foreach my $code (keys(%{$instcodes})) {
8646: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8647: }
8648: chop($courses);
8649: my $ok_response = 0;
8650: my $response;
8651: while (@homeservers > 0 && $ok_response == 0) {
8652: my $server = shift(@homeservers);
8653: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8654: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8655: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8656: split(/:/,$response);
8657: %{$codes} = (%{$codes},&str2hash($codes_str));
8658: push(@{$codetitles},&str2array($codetitles_str));
8659: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8660: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8661: $ok_response = 1;
8662: }
8663: }
8664: if ($ok_response) {
8665: return 'ok';
8666: } else {
8667: return $response;
8668: }
8669: }
8670:
8671: sub auto_instcode_defaults {
8672: my ($domain,$returnhash,$code_order) = @_;
8673: my @homeservers;
8674:
8675: my %servers = &get_servers($domain,'library');
8676: foreach my $tryserver (keys(%servers)) {
8677: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8678: push(@homeservers,$tryserver);
8679: }
8680: }
8681:
8682: my $response;
8683: foreach my $server (@homeservers) {
8684: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8685: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8686:
8687: foreach my $pair (split(/\&/,$response)) {
8688: my ($name,$value)=split(/\=/,$pair);
8689: if ($name eq 'code_order') {
8690: @{$code_order} = split(/\&/,&unescape($value));
8691: } else {
8692: $returnhash->{&unescape($name)}=&unescape($value);
8693: }
8694: }
8695: return 'ok';
8696: }
8697:
8698: return $response;
8699: }
8700:
8701: sub auto_possible_instcodes {
8702: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8703: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8704: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8705: return;
8706: }
8707: my (@homeservers,$uhome);
8708: if (defined(&domain($domain,'primary'))) {
8709: $uhome=&domain($domain,'primary');
8710: push(@homeservers,&domain($domain,'primary'));
8711: } else {
8712: my %servers = &get_servers($domain,'library');
8713: foreach my $tryserver (keys(%servers)) {
8714: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8715: push(@homeservers,$tryserver);
8716: }
8717: }
8718: }
8719: my $response;
8720: foreach my $server (@homeservers) {
8721: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8722: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8723: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8724: split(':',$response);
8725: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8726: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8727: foreach my $item (split('&',$cat_title)) {
8728: my ($name,$value)=split('=',$item);
8729: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8730: }
8731: foreach my $item (split('&',$cat_order)) {
8732: my ($name,$value)=split('=',$item);
8733: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8734: }
8735: return 'ok';
8736: }
8737: return $response;
8738: }
8739:
8740: sub auto_courserequest_checks {
8741: my ($dom) = @_;
8742: my ($homeserver,%validations);
8743: if ($dom =~ /^$match_domain$/) {
8744: $homeserver = &domain($dom,'primary');
8745: }
8746: unless ($homeserver eq 'no_host') {
8747: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8748: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8749: my @items = split(/&/,$response);
8750: foreach my $item (@items) {
8751: my ($key,$value) = split('=',$item);
8752: $validations{&unescape($key)} = &thaw_unescape($value);
8753: }
8754: }
8755: }
8756: return %validations;
8757: }
8758:
8759: sub auto_courserequest_validation {
8760: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8761: my ($homeserver,$response);
8762: if ($dom =~ /^$match_domain$/) {
8763: $homeserver = &domain($dom,'primary');
8764: }
8765: unless ($homeserver eq 'no_host') {
8766: my $customdata;
8767: if (ref($custominfo) eq 'HASH') {
8768: $customdata = &freeze_escape($custominfo);
8769: }
8770: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8771: ':'.&escape($crstype).':'.&escape($inststatuslist).
8772: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8773: $customdata,$homeserver));
8774: }
8775: return $response;
8776: }
8777:
8778: sub auto_validate_class_sec {
8779: my ($cdom,$cnum,$owners,$inst_class) = @_;
8780: my $homeserver = &homeserver($cnum,$cdom);
8781: my $ownerlist;
8782: if (ref($owners) eq 'ARRAY') {
8783: $ownerlist = join(',',@{$owners});
8784: } else {
8785: $ownerlist = $owners;
8786: }
8787: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8788: &escape($ownerlist).':'.$cdom,$homeserver);
8789: return $response;
8790: }
8791:
8792: sub auto_crsreq_update {
8793: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8794: $code,$accessstart,$accessend,$inbound) = @_;
8795: my ($homeserver,%crsreqresponse);
8796: if ($cdom =~ /^$match_domain$/) {
8797: $homeserver = &domain($cdom,'primary');
8798: }
8799: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8800: my $info;
8801: if (ref($inbound) eq 'HASH') {
8802: $info = &freeze_escape($inbound);
8803: }
8804: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8805: ':'.&escape($action).':'.&escape($ownername).':'.
8806: &escape($ownerdomain).':'.&escape($fullname).':'.
8807: &escape($title).':'.&escape($code).':'.
8808: &escape($accessstart).':'.&escape($accessend).':'.$info,
8809: $homeserver);
8810: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8811: my @items = split(/&/,$response);
8812: foreach my $item (@items) {
8813: my ($key,$value) = split('=',$item);
8814: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8815: }
8816: }
8817: }
8818: return \%crsreqresponse;
8819: }
8820:
8821: sub auto_export_grades {
8822: my ($cdom,$cnum,$inforef,$gradesref) = @_;
8823: my ($homeserver,%exportresponse);
8824: if ($cdom =~ /^$match_domain$/) {
8825: $homeserver = &domain($cdom,'primary');
8826: }
8827: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8828: my $info;
8829: if (ref($inforef) eq 'HASH') {
8830: $info = &freeze_escape($inforef);
8831: }
8832: if (ref($gradesref) eq 'HASH') {
8833: my $grades = &freeze_escape($gradesref);
8834: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
8835: $info.':'.$grades,$homeserver);
8836: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
8837: my @items = split(/&/,$response);
8838: foreach my $item (@items) {
8839: my ($key,$value) = split('=',$item);
8840: $exportresponse{&unescape($key)} = &thaw_unescape($value);
8841: }
8842: }
8843: }
8844: }
8845: return \%exportresponse;
8846: }
8847:
8848: sub check_instcode_cloning {
8849: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
8850: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8851: return;
8852: }
8853: my $canclone;
8854: if (@{$code_order} > 0) {
8855: my $instcoderegexp ='^';
8856: my @clonecodes = split(/\&/,$cloner);
8857: foreach my $item (@{$code_order}) {
8858: if (grep(/^\Q$item\E=/,@clonecodes)) {
8859: foreach my $pair (@clonecodes) {
8860: my ($key,$val) = split(/\=/,$pair,2);
8861: $val = &unescape($val);
8862: if ($key eq $item) {
8863: $instcoderegexp .= '('.$val.')';
8864: last;
8865: }
8866: }
8867: } else {
8868: $instcoderegexp .= $codedefaults->{$item};
8869: }
8870: }
8871: $instcoderegexp .= '$';
8872: my (@from,@to);
8873: eval {
8874: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8875: (@to) = ($clonetocode =~ /$instcoderegexp/);
8876: };
8877: if ((@from > 0) && (@to > 0)) {
8878: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8879: if (!@diffs) {
8880: $canclone = 1;
8881: }
8882: }
8883: }
8884: return $canclone;
8885: }
8886:
8887: sub default_instcode_cloning {
8888: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
8889: my (%codedefaults,@code_order,$canclone);
8890: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
8891: %codedefaults = %{$codedefaultsref};
8892: @code_order = @{$codeorderref};
8893: } elsif ($clonedom) {
8894: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
8895: }
8896: if (($domdefclone) && (@code_order)) {
8897: my @clonecodes = split(/\+/,$domdefclone);
8898: my $instcoderegexp ='^';
8899: foreach my $item (@code_order) {
8900: if (grep(/^\Q$item\E$/,@clonecodes)) {
8901: $instcoderegexp .= '('.$codedefaults{$item}.')';
8902: } else {
8903: $instcoderegexp .= $codedefaults{$item};
8904: }
8905: }
8906: $instcoderegexp .= '$';
8907: my (@from,@to);
8908: eval {
8909: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8910: (@to) = ($clonetocode =~ /$instcoderegexp/);
8911: };
8912: if ((@from > 0) && (@to > 0)) {
8913: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8914: if (!@diffs) {
8915: $canclone = 1;
8916: }
8917: }
8918: }
8919: return $canclone;
8920: }
8921:
8922: # ------------------------------------------------------- Course Group routines
8923:
8924: sub get_coursegroups {
8925: my ($cdom,$cnum,$group,$namespace) = @_;
8926: return(&dump($namespace,$cdom,$cnum,$group));
8927: }
8928:
8929: sub modify_coursegroup {
8930: my ($cdom,$cnum,$groupsettings) = @_;
8931: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
8932: }
8933:
8934: sub toggle_coursegroup_status {
8935: my ($cdom,$cnum,$group,$action) = @_;
8936: my ($from_namespace,$to_namespace);
8937: if ($action eq 'delete') {
8938: $from_namespace = 'coursegroups';
8939: $to_namespace = 'deleted_groups';
8940: } else {
8941: $from_namespace = 'deleted_groups';
8942: $to_namespace = 'coursegroups';
8943: }
8944: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8945: if (my $tmp = &error(%curr_group)) {
8946: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8947: return ('read error',$tmp);
8948: } else {
8949: my %savedsettings = %curr_group;
8950: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8951: my $deloutcome;
8952: if ($result eq 'ok') {
8953: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8954: } else {
8955: return ('write error',$result);
8956: }
8957: if ($deloutcome eq 'ok') {
8958: return 'ok';
8959: } else {
8960: return ('delete error',$deloutcome);
8961: }
8962: }
8963: }
8964:
8965: sub modify_group_roles {
8966: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8967: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8968: my $role = 'gr/'.&escape($userprivs);
8969: my ($uname,$udom) = split(/:/,$user);
8970: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8971: if ($result eq 'ok') {
8972: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8973: }
8974: return $result;
8975: }
8976:
8977: sub modify_coursegroup_membership {
8978: my ($cdom,$cnum,$membership) = @_;
8979: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8980: return $result;
8981: }
8982:
8983: sub get_active_groups {
8984: my ($udom,$uname,$cdom,$cnum) = @_;
8985: my $now = time;
8986: my %groups = ();
8987: foreach my $key (keys(%env)) {
8988: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8989: my ($start,$end) = split(/\./,$env{$key});
8990: if (($end!=0) && ($end<$now)) { next; }
8991: if (($start!=0) && ($start>$now)) { next; }
8992: if ($1 eq $cdom && $2 eq $cnum) {
8993: $groups{$3} = $env{$key} ;
8994: }
8995: }
8996: }
8997: return %groups;
8998: }
8999:
9000: sub get_group_membership {
9001: my ($cdom,$cnum,$group) = @_;
9002: return(&dump('groupmembership',$cdom,$cnum,$group));
9003: }
9004:
9005: sub get_users_groups {
9006: my ($udom,$uname,$courseid) = @_;
9007: my @usersgroups;
9008: my $cachetime=1800;
9009:
9010: my $hashid="$udom:$uname:$courseid";
9011: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9012: if (defined($cached)) {
9013: @usersgroups = split(/:/,$grouplist);
9014: } else {
9015: $grouplist = '';
9016: my $courseurl = &courseid_to_courseurl($courseid);
9017: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9018: my $access_end = $env{'course.'.$courseid.
9019: '.default_enrollment_end_date'};
9020: my $now = time;
9021: foreach my $key (keys(%roleshash)) {
9022: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9023: my $group = $1;
9024: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9025: my $start = $2;
9026: my $end = $1;
9027: if ($start == -1) { next; } # deleted from group
9028: if (($start!=0) && ($start>$now)) { next; }
9029: if (($end!=0) && ($end<$now)) {
9030: if ($access_end && $access_end < $now) {
9031: if ($access_end - $end < 86400) {
9032: push(@usersgroups,$group);
9033: }
9034: }
9035: next;
9036: }
9037: push(@usersgroups,$group);
9038: }
9039: }
9040: }
9041: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9042: $grouplist = join(':',@usersgroups);
9043: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9044: }
9045: return @usersgroups;
9046: }
9047:
9048: sub devalidate_getgroups_cache {
9049: my ($udom,$uname,$cdom,$cnum)=@_;
9050: my $courseid = $cdom.'_'.$cnum;
9051:
9052: my $hashid="$udom:$uname:$courseid";
9053: &devalidate_cache_new('getgroups',$hashid);
9054: }
9055:
9056: # ------------------------------------------------------------------ Plain Text
9057:
9058: sub plaintext {
9059: my ($short,$type,$cid,$forcedefault) = @_;
9060: if ($short =~ m{^cr/}) {
9061: return (split('/',$short))[-1];
9062: }
9063: if (!defined($cid)) {
9064: $cid = $env{'request.course.id'};
9065: }
9066: my %rolenames = (
9067: Course => 'std',
9068: Community => 'alt1',
9069: Placement => 'std',
9070: );
9071: if ($cid ne '') {
9072: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9073: unless ($forcedefault) {
9074: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9075: &Apache::lonlocal::mt_escape(\$roletext);
9076: return &Apache::lonlocal::mt($roletext);
9077: }
9078: }
9079: }
9080: if ((defined($type)) && (defined($rolenames{$type})) &&
9081: (defined($rolenames{$type})) &&
9082: (defined($prp{$short}{$rolenames{$type}}))) {
9083: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9084: } elsif ($cid ne '') {
9085: my $crstype = $env{'course.'.$cid.'.type'};
9086: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9087: (defined($prp{$short}{$rolenames{$crstype}}))) {
9088: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9089: }
9090: }
9091: return &Apache::lonlocal::mt($prp{$short}{'std'});
9092: }
9093:
9094: # ----------------------------------------------------------------- Assign Role
9095:
9096: sub assignrole {
9097: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9098: $context)=@_;
9099: my $mrole;
9100: if ($role =~ /^cr\//) {
9101: my $cwosec=$url;
9102: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9103: unless (&allowed('ccr',$cwosec)) {
9104: my $refused = 1;
9105: if ($context eq 'requestcourses') {
9106: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9107: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9108: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9109: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9110: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9111: if ($crsenv{'internal.courseowner'} eq
9112: $env{'user.name'}.':'.$env{'user.domain'}) {
9113: $refused = '';
9114: }
9115: }
9116: }
9117: }
9118: }
9119: if ($refused) {
9120: &logthis('Refused custom assignrole: '.
9121: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9122: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9123: return 'refused';
9124: }
9125: }
9126: $mrole='cr';
9127: } elsif ($role =~ /^gr\//) {
9128: my $cwogrp=$url;
9129: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9130: unless (&allowed('mdg',$cwogrp)) {
9131: &logthis('Refused group assignrole: '.
9132: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9133: $env{'user.name'}.' at '.$env{'user.domain'});
9134: return 'refused';
9135: }
9136: $mrole='gr';
9137: } else {
9138: my $cwosec=$url;
9139: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9140: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9141: my $refused;
9142: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9143: if (!(&allowed('c'.$role,$url))) {
9144: $refused = 1;
9145: }
9146: } else {
9147: $refused = 1;
9148: }
9149: if ($refused) {
9150: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9151: if (!$selfenroll && $context eq 'course') {
9152: my %crsenv;
9153: if ($role eq 'cc' || $role eq 'co') {
9154: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9155: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9156: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9157: if ($crsenv{'internal.courseowner'} eq
9158: $env{'user.name'}.':'.$env{'user.domain'}) {
9159: $refused = '';
9160: }
9161: }
9162: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9163: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9164: if ($crsenv{'internal.courseowner'} eq
9165: $env{'user.name'}.':'.$env{'user.domain'}) {
9166: $refused = '';
9167: }
9168: }
9169: }
9170: }
9171: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9172: $refused = '';
9173: } elsif ($context eq 'requestcourses') {
9174: my @possroles = ('st','ta','ep','in','cc','co');
9175: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9176: my $wrongcc;
9177: if ($cnum =~ /^$match_community$/) {
9178: $wrongcc = 1 if ($role eq 'cc');
9179: } else {
9180: $wrongcc = 1 if ($role eq 'co');
9181: }
9182: unless ($wrongcc) {
9183: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9184: if ($crsenv{'internal.courseowner'} eq
9185: $env{'user.name'}.':'.$env{'user.domain'}) {
9186: $refused = '';
9187: }
9188: }
9189: }
9190: } elsif ($context eq 'requestauthor') {
9191: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9192: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9193: if ($env{'environment.requestauthor'} eq 'automatic') {
9194: $refused = '';
9195: } else {
9196: my %domdefaults = &get_domain_defaults($udom);
9197: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9198: my $checkbystatus;
9199: if ($env{'user.adv'}) {
9200: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9201: if ($disposition eq 'automatic') {
9202: $refused = '';
9203: } elsif ($disposition eq '') {
9204: $checkbystatus = 1;
9205: }
9206: } else {
9207: $checkbystatus = 1;
9208: }
9209: if ($checkbystatus) {
9210: if ($env{'environment.inststatus'}) {
9211: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9212: foreach my $type (@inststatuses) {
9213: if (($type ne '') &&
9214: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9215: $refused = '';
9216: }
9217: }
9218: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9219: $refused = '';
9220: }
9221: }
9222: }
9223: }
9224: }
9225: }
9226: if ($refused) {
9227: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9228: ' '.$role.' '.$end.' '.$start.' by '.
9229: $env{'user.name'}.' at '.$env{'user.domain'});
9230: return 'refused';
9231: }
9232: }
9233: } elsif ($role eq 'au') {
9234: if ($url ne '/'.$udom.'/') {
9235: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9236: ' to assign author role for '.$uname.':'.$udom.
9237: ' in domain: '.$url.' refused (wrong domain).');
9238: return 'refused';
9239: }
9240: }
9241: $mrole=$role;
9242: }
9243: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9244: "$udom:$uname:$url".'_'."$mrole=$role";
9245: if ($end) { $command.='_'.$end; }
9246: if ($start) {
9247: if ($end) {
9248: $command.='_'.$start;
9249: } else {
9250: $command.='_0_'.$start;
9251: }
9252: }
9253: my $origstart = $start;
9254: my $origend = $end;
9255: my $delflag;
9256: # actually delete
9257: if ($deleteflag) {
9258: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9259: # modify command to delete the role
9260: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9261: "$udom:$uname:$url".'_'."$mrole";
9262: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9263: # set start and finish to negative values for userrolelog
9264: $start=-1;
9265: $end=-1;
9266: $delflag = 1;
9267: }
9268: }
9269: # send command
9270: my $answer=&reply($command,&homeserver($uname,$udom));
9271: # log new user role if status is ok
9272: if ($answer eq 'ok') {
9273: &userrolelog($role,$uname,$udom,$url,$start,$end);
9274: if (($role eq 'cc') || ($role eq 'in') ||
9275: ($role eq 'ep') || ($role eq 'ad') ||
9276: ($role eq 'ta') || ($role eq 'st') ||
9277: ($role=~/^cr/) || ($role eq 'gr') ||
9278: ($role eq 'co')) {
9279: # for course roles, perform group memberships changes triggered by role change.
9280: unless ($role =~ /^gr/) {
9281: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9282: $origstart,$selfenroll,$context);
9283: }
9284: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9285: $selfenroll,$context);
9286: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9287: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9288: ($role eq 'da')) {
9289: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9290: $context);
9291: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9292: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9293: $context);
9294: }
9295: if ($role eq 'cc') {
9296: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9297: }
9298: }
9299: return $answer;
9300: }
9301:
9302: sub autoupdate_coowners {
9303: my ($url,$end,$start,$uname,$udom) = @_;
9304: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9305: if (($cdom ne '') && ($cnum ne '')) {
9306: my $now = time;
9307: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9308: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9309: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9310: my $instcode = $coursehash{'internal.coursecode'};
9311: if ($instcode ne '') {
9312: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9313: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9314: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9315: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9316: if ($result eq 'valid') {
9317: if ($coursehash{'internal.co-owners'}) {
9318: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9319: push(@newcoowners,$coowner);
9320: }
9321: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9322: push(@newcoowners,$uname.':'.$udom);
9323: }
9324: @newcoowners = sort(@newcoowners);
9325: } else {
9326: push(@newcoowners,$uname.':'.$udom);
9327: }
9328: } else {
9329: if ($coursehash{'internal.co-owners'}) {
9330: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9331: unless ($coowner eq $uname.':'.$udom) {
9332: push(@newcoowners,$coowner);
9333: }
9334: }
9335: unless (@newcoowners > 0) {
9336: $delcoowners = 1;
9337: $coowners = '';
9338: }
9339: }
9340: }
9341: if (@newcoowners || $delcoowners) {
9342: &store_coowners($cdom,$cnum,$coursehash{'home'},
9343: $delcoowners,@newcoowners);
9344: }
9345: }
9346: }
9347: }
9348: }
9349: }
9350: }
9351:
9352: sub store_coowners {
9353: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9354: my $cid = $cdom.'_'.$cnum;
9355: my ($coowners,$delresult,$putresult);
9356: if (@newcoowners) {
9357: $coowners = join(',',@newcoowners);
9358: my %coownershash = (
9359: 'internal.co-owners' => $coowners,
9360: );
9361: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9362: if ($putresult eq 'ok') {
9363: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9364: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9365: }
9366: }
9367: }
9368: if ($delcoowners) {
9369: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9370: if ($delresult eq 'ok') {
9371: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9372: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9373: }
9374: }
9375: }
9376: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9377: my %crsinfo =
9378: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9379: if (ref($crsinfo{$cid}) eq 'HASH') {
9380: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9381: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9382: }
9383: }
9384: }
9385:
9386: # -------------------------------------------------- Modify user authentication
9387: # Overrides without validation
9388:
9389: sub modifyuserauth {
9390: my ($udom,$uname,$umode,$upass)=@_;
9391: my $uhome=&homeserver($uname,$udom);
9392: unless (&allowed('mau',$udom)) { return 'refused'; }
9393: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9394: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9395: ' in domain '.$env{'request.role.domain'});
9396: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9397: &escape($upass),$uhome);
9398: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9399: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9400: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9401: &log($udom,,$uname,$uhome,
9402: 'Authentication changed by '.$env{'user.domain'}.', '.
9403: $env{'user.name'}.', '.$umode.
9404: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9405: unless ($reply eq 'ok') {
9406: &logthis('Authentication mode error: '.$reply);
9407: return 'error: '.$reply;
9408: }
9409: return 'ok';
9410: }
9411:
9412: # --------------------------------------------------------------- Modify a user
9413:
9414: sub modifyuser {
9415: my ($udom, $uname, $uid,
9416: $umode, $upass, $first,
9417: $middle, $last, $gene,
9418: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9419: $udom= &LONCAPA::clean_domain($udom);
9420: $uname=&LONCAPA::clean_username($uname);
9421: my $showcandelete = 'none';
9422: if (ref($candelete) eq 'ARRAY') {
9423: if (@{$candelete} > 0) {
9424: $showcandelete = join(', ',@{$candelete});
9425: }
9426: }
9427: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9428: $umode.', '.$first.', '.$middle.', '.
9429: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9430: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9431: ' desiredhome not specified').
9432: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9433: ' in domain '.$env{'request.role.domain'});
9434: my $uhome=&homeserver($uname,$udom,'true');
9435: my $newuser;
9436: if ($uhome eq 'no_host') {
9437: $newuser = 1;
9438: }
9439: # ----------------------------------------------------------------- Create User
9440: if (($uhome eq 'no_host') &&
9441: (($umode && $upass) || ($umode eq 'localauth'))) {
9442: my $unhome='';
9443: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9444: $unhome = $desiredhome;
9445: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9446: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9447: } else { # load balancing routine for determining $unhome
9448: my $loadm=10000000;
9449: my %servers = &get_servers($udom,'library');
9450: foreach my $tryserver (keys(%servers)) {
9451: my $answer=reply('load',$tryserver);
9452: if (($answer=~/\d+/) && ($answer<$loadm)) {
9453: $loadm=$answer;
9454: $unhome=$tryserver;
9455: }
9456: }
9457: }
9458: if (($unhome eq '') || ($unhome eq 'no_host')) {
9459: return 'error: unable to find a home server for '.$uname.
9460: ' in domain '.$udom;
9461: }
9462: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9463: &escape($upass),$unhome);
9464: unless ($reply eq 'ok') {
9465: return 'error: '.$reply;
9466: }
9467: $uhome=&homeserver($uname,$udom,'true');
9468: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9469: return 'error: unable verify users home machine.';
9470: }
9471: } # End of creation of new user
9472: # ---------------------------------------------------------------------- Add ID
9473: if ($uid) {
9474: $uid=~tr/A-Z/a-z/;
9475: my %uidhash=&idrget($udom,$uname);
9476: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9477: && (!$forceid)) {
9478: unless ($uid eq $uidhash{$uname}) {
9479: return 'error: user id "'.$uid.'" does not match '.
9480: 'current user id "'.$uidhash{$uname}.'".';
9481: }
9482: } else {
9483: &idput($udom,{$uname => $uid},$uhome,'ids');
9484: }
9485: }
9486: # -------------------------------------------------------------- Add names, etc
9487: my @tmp=&get('environment',
9488: ['firstname','middlename','lastname','generation','id',
9489: 'permanentemail','inststatus'],
9490: $udom,$uname);
9491: my (%names,%oldnames);
9492: if ($tmp[0] =~ m/^error:.*/) {
9493: %names=();
9494: } else {
9495: %names = @tmp;
9496: %oldnames = %names;
9497: }
9498: #
9499: # If name, email and/or uid are blank (e.g., because an uploaded file
9500: # of users did not contain them), do not overwrite existing values
9501: # unless field is in $candelete array ref.
9502: #
9503:
9504: my @fields = ('firstname','middlename','lastname','generation',
9505: 'permanentemail','id');
9506: my %newvalues;
9507: if (ref($candelete) eq 'ARRAY') {
9508: foreach my $field (@fields) {
9509: if (grep(/^\Q$field\E$/,@{$candelete})) {
9510: if ($field eq 'firstname') {
9511: $names{$field} = $first;
9512: } elsif ($field eq 'middlename') {
9513: $names{$field} = $middle;
9514: } elsif ($field eq 'lastname') {
9515: $names{$field} = $last;
9516: } elsif ($field eq 'generation') {
9517: $names{$field} = $gene;
9518: } elsif ($field eq 'permanentemail') {
9519: $names{$field} = $email;
9520: } elsif ($field eq 'id') {
9521: $names{$field} = $uid;
9522: }
9523: }
9524: }
9525: }
9526: if ($first) { $names{'firstname'} = $first; }
9527: if (defined($middle)) { $names{'middlename'} = $middle; }
9528: if ($last) { $names{'lastname'} = $last; }
9529: if (defined($gene)) { $names{'generation'} = $gene; }
9530: if ($email) {
9531: $email=~s/[^\w\@\.\-\,]//gs;
9532: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9533: }
9534: if ($uid) { $names{'id'} = $uid; }
9535: if (defined($inststatus)) {
9536: $names{'inststatus'} = '';
9537: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9538: if (ref($usertypes) eq 'HASH') {
9539: my @okstatuses;
9540: foreach my $item (split(/:/,$inststatus)) {
9541: if (defined($usertypes->{$item})) {
9542: push(@okstatuses,$item);
9543: }
9544: }
9545: if (@okstatuses) {
9546: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9547: }
9548: }
9549: }
9550: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9551: $umode.', '.$first.', '.$middle.', '.
9552: $last.', '.$gene.', '.$email.', '.$inststatus;
9553: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9554: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9555: } else {
9556: $logmsg .= ' during self creation';
9557: }
9558: my $changed;
9559: if ($newuser) {
9560: $changed = 1;
9561: } else {
9562: foreach my $field (@fields) {
9563: if ($names{$field} ne $oldnames{$field}) {
9564: $changed = 1;
9565: last;
9566: }
9567: }
9568: }
9569: unless ($changed) {
9570: $logmsg = 'No changes in user information needed for: '.$logmsg;
9571: &logthis($logmsg);
9572: return 'ok';
9573: }
9574: my $reply = &put('environment', \%names, $udom,$uname);
9575: if ($reply ne 'ok') {
9576: return 'error: '.$reply;
9577: }
9578: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9579: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9580: }
9581: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9582: &devalidate_cache_new('namescache',$uname.':'.$udom);
9583: $logmsg = 'Success modifying user '.$logmsg;
9584: &logthis($logmsg);
9585: return 'ok';
9586: }
9587:
9588: # -------------------------------------------------------------- Modify student
9589:
9590: sub modifystudent {
9591: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9592: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9593: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9594: if (!$cid) {
9595: unless ($cid=$env{'request.course.id'}) {
9596: return 'not_in_class';
9597: }
9598: }
9599: # --------------------------------------------------------------- Make the user
9600: my $reply=&modifyuser
9601: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9602: $desiredhome,$email,$inststatus);
9603: unless ($reply eq 'ok') { return $reply; }
9604: # This will cause &modify_student_enrollment to get the uid from the
9605: # student's environment
9606: $uid = undef if (!$forceid);
9607: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9608: $gene,$usec,$end,$start,$type,$locktype,
9609: $cid,$selfenroll,$context,$credits,$instsec);
9610: return $reply;
9611: }
9612:
9613: sub modify_student_enrollment {
9614: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9615: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9616: my ($cdom,$cnum,$chome);
9617: if (!$cid) {
9618: unless ($cid=$env{'request.course.id'}) {
9619: return 'not_in_class';
9620: }
9621: $cdom=$env{'course.'.$cid.'.domain'};
9622: $cnum=$env{'course.'.$cid.'.num'};
9623: } else {
9624: ($cdom,$cnum)=split(/_/,$cid);
9625: }
9626: $chome=$env{'course.'.$cid.'.home'};
9627: if (!$chome) {
9628: $chome=&homeserver($cnum,$cdom);
9629: }
9630: if (!$chome) { return 'unknown_course'; }
9631: # Make sure the user exists
9632: my $uhome=&homeserver($uname,$udom);
9633: if (($uhome eq '') || ($uhome eq 'no_host')) {
9634: return 'error: no such user';
9635: }
9636: # Get student data if we were not given enough information
9637: if (!defined($first) || $first eq '' ||
9638: !defined($last) || $last eq '' ||
9639: !defined($uid) || $uid eq '' ||
9640: !defined($middle) || $middle eq '' ||
9641: !defined($gene) || $gene eq '') {
9642: # They did not supply us with enough data to enroll the student, so
9643: # we need to pick up more information.
9644: my %tmp = &get('environment',
9645: ['firstname','middlename','lastname', 'generation','id']
9646: ,$udom,$uname);
9647:
9648: #foreach my $key (keys(%tmp)) {
9649: # &logthis("key $key = ".$tmp{$key});
9650: #}
9651: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9652: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9653: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9654: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9655: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9656: }
9657: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9658: my $user = "$uname:$udom";
9659: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9660: my $reply=cput('classlist',
9661: {$user =>
9662: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9663: $cdom,$cnum);
9664: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9665: &devalidate_getsection_cache($udom,$uname,$cid);
9666: } else {
9667: return 'error: '.$reply;
9668: }
9669: # Add student role to user
9670: my $uurl='/'.$cid;
9671: $uurl=~s/\_/\//g;
9672: if ($usec) {
9673: $uurl.='/'.$usec;
9674: }
9675: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9676: $selfenroll,$context);
9677: if ($result ne 'ok') {
9678: if ($old_entry{$user} ne '') {
9679: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9680: } else {
9681: $reply = &del('classlist',[$user],$cdom,$cnum);
9682: }
9683: }
9684: return $result;
9685: }
9686:
9687: sub format_name {
9688: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9689: my $name;
9690: if ($first ne 'lastname') {
9691: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9692: } else {
9693: if ($lastname=~/\S/) {
9694: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9695: $name=~s/\s+,/,/;
9696: } else {
9697: $name.= $firstname.' '.$middlename.' '.$generation;
9698: }
9699: }
9700: $name=~s/^\s+//;
9701: $name=~s/\s+$//;
9702: $name=~s/\s+/ /g;
9703: return $name;
9704: }
9705:
9706: # ------------------------------------------------- Write to course preferences
9707:
9708: sub writecoursepref {
9709: my ($courseid,%prefs)=@_;
9710: $courseid=~s/^\///;
9711: $courseid=~s/\_/\//g;
9712: my ($cdomain,$cnum)=split(/\//,$courseid);
9713: my $chome=homeserver($cnum,$cdomain);
9714: if (($chome eq '') || ($chome eq 'no_host')) {
9715: return 'error: no such course';
9716: }
9717: my $cstring='';
9718: foreach my $pref (keys(%prefs)) {
9719: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9720: }
9721: $cstring=~s/\&$//;
9722: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9723: }
9724:
9725: # ---------------------------------------------------------- Make/modify course
9726:
9727: sub createcourse {
9728: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9729: $course_owner,$crstype,$cnum,$context,$category)=@_;
9730: $url=&declutter($url);
9731: my $cid='';
9732: if ($context eq 'requestcourses') {
9733: my $can_create = 0;
9734: my ($ownername,$ownerdom) = split(':',$course_owner);
9735: if ($udom eq $ownerdom) {
9736: if (&usertools_access($ownername,$ownerdom,$category,undef,
9737: $context)) {
9738: $can_create = 1;
9739: }
9740: } else {
9741: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9742: $category);
9743: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9744: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9745: if (@curr > 0) {
9746: my @options = qw(approval validate autolimit);
9747: my $optregex = join('|',@options);
9748: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9749: $can_create = 1;
9750: }
9751: }
9752: }
9753: }
9754: if ($can_create) {
9755: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9756: unless (&allowed('ccc',$udom)) {
9757: return 'refused';
9758: }
9759: }
9760: } else {
9761: return 'refused';
9762: }
9763: } elsif (!&allowed('ccc',$udom)) {
9764: return 'refused';
9765: }
9766: # --------------------------------------------------------------- Get Unique ID
9767: my $uname;
9768: if ($cnum =~ /^$match_courseid$/) {
9769: my $chome=&homeserver($cnum,$udom,'true');
9770: if (($chome eq '') || ($chome eq 'no_host')) {
9771: $uname = $cnum;
9772: } else {
9773: $uname = &generate_coursenum($udom,$crstype);
9774: }
9775: } else {
9776: $uname = &generate_coursenum($udom,$crstype);
9777: }
9778: return $uname if ($uname =~ /^error/);
9779: # -------------------------------------------------- Check supplied server name
9780: if (!defined($course_server)) {
9781: if (defined(&domain($udom,'primary'))) {
9782: $course_server = &domain($udom,'primary');
9783: } else {
9784: $course_server = $env{'user.home'};
9785: }
9786: }
9787: my %host_servers =
9788: &Apache::lonnet::get_servers($udom,'library');
9789: unless ($host_servers{$course_server}) {
9790: return 'error: invalid home server for course: '.$course_server;
9791: }
9792: # ------------------------------------------------------------- Make the course
9793: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9794: $course_server);
9795: unless ($reply eq 'ok') { return 'error: '.$reply; }
9796: my $uhome=&homeserver($uname,$udom,'true');
9797: if (($uhome eq '') || ($uhome eq 'no_host')) {
9798: return 'error: no such course';
9799: }
9800: # ----------------------------------------------------------------- Course made
9801: # log existence
9802: my $now = time;
9803: my $newcourse = {
9804: $udom.'_'.$uname => {
9805: description => $description,
9806: inst_code => $inst_code,
9807: owner => $course_owner,
9808: type => $crstype,
9809: creator => $env{'user.name'}.':'.
9810: $env{'user.domain'},
9811: created => $now,
9812: context => $context,
9813: },
9814: };
9815: &courseidput($udom,$newcourse,$uhome,'notime');
9816: # set toplevel url
9817: my $topurl=$url;
9818: unless ($nonstandard) {
9819: # ------------------------------------------ For standard courses, make top url
9820: my $mapurl=&clutter($url);
9821: if ($mapurl eq '/res/') { $mapurl=''; }
9822: $env{'form.initmap'}=(<<ENDINITMAP);
9823: <map>
9824: <resource id="1" type="start"></resource>
9825: <resource id="2" src="$mapurl"></resource>
9826: <resource id="3" type="finish"></resource>
9827: <link index="1" from="1" to="2"></link>
9828: <link index="2" from="2" to="3"></link>
9829: </map>
9830: ENDINITMAP
9831: $topurl=&declutter(
9832: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
9833: );
9834: }
9835: # ----------------------------------------------------------- Write preferences
9836: &writecoursepref($udom.'_'.$uname,
9837: ('description' => $description,
9838: 'url' => $topurl,
9839: 'internal.creator' => $env{'user.name'}.':'.
9840: $env{'user.domain'},
9841: 'internal.created' => $now,
9842: 'internal.creationcontext' => $context)
9843: );
9844: return '/'.$udom.'/'.$uname;
9845: }
9846:
9847: # ------------------------------------------------------------------- Create ID
9848: sub generate_coursenum {
9849: my ($udom,$crstype) = @_;
9850: my $domdesc = &domain($udom);
9851: return 'error: invalid domain' if ($domdesc eq '');
9852: my $first;
9853: if ($crstype eq 'Community') {
9854: $first = '0';
9855: } else {
9856: $first = int(1+rand(9));
9857: }
9858: my $uname=$first.
9859: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9860: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9861: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9862: # ----------------------------------------------- Make sure that does not exist
9863: my $uhome=&homeserver($uname,$udom,'true');
9864: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9865: if ($crstype eq 'Community') {
9866: $first = '0';
9867: } else {
9868: $first = int(1+rand(9));
9869: }
9870: $uname=$first.
9871: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9872: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9873: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9874: $uhome=&homeserver($uname,$udom,'true');
9875: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9876: return 'error: unable to generate unique course-ID';
9877: }
9878: }
9879: return $uname;
9880: }
9881:
9882: sub is_course {
9883: my ($cdom, $cnum) = scalar(@_) == 1 ?
9884: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
9885:
9886: return unless $cdom and $cnum;
9887:
9888: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
9889: '.');
9890:
9891: return unless(exists($courses{$cdom.'_'.$cnum}));
9892: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
9893: }
9894:
9895: sub store_userdata {
9896: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
9897: my $result;
9898: if ($datakey ne '') {
9899: if (ref($storehash) eq 'HASH') {
9900: if ($udom eq '' || $uname eq '') {
9901: $udom = $env{'user.domain'};
9902: $uname = $env{'user.name'};
9903: }
9904: my $uhome=&homeserver($uname,$udom);
9905: if (($uhome eq '') || ($uhome eq 'no_host')) {
9906: $result = 'error: no_host';
9907: } else {
9908: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
9909: $storehash->{'host'} = $perlvar{'lonHostID'};
9910:
9911: my $namevalue='';
9912: foreach my $key (keys(%{$storehash})) {
9913: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
9914: }
9915: $namevalue=~s/\&$//;
9916: unless ($namespace eq 'courserequests') {
9917: $datakey = &escape($datakey);
9918: }
9919: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
9920: $namevalue,$uhome);
9921: }
9922: } else {
9923: $result = 'error: data to store was not a hash reference';
9924: }
9925: } else {
9926: $result= 'error: invalid requestkey';
9927: }
9928: return $result;
9929: }
9930:
9931: # ---------------------------------------------------------- Assign Custom Role
9932:
9933: sub assigncustomrole {
9934: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
9935: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
9936: $end,$start,$deleteflag,$selfenroll,$context);
9937: }
9938:
9939: # ----------------------------------------------------------------- Revoke Role
9940:
9941: sub revokerole {
9942: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
9943: my $now=time;
9944: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
9945: }
9946:
9947: # ---------------------------------------------------------- Revoke Custom Role
9948:
9949: sub revokecustomrole {
9950: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9951: my $now=time;
9952: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9953: $deleteflag,$selfenroll,$context);
9954: }
9955:
9956: # ------------------------------------------------------------ Disk usage
9957: sub diskusage {
9958: my ($udom,$uname,$directorypath,$getpropath)=@_;
9959: $directorypath =~ s/\/$//;
9960: my $listing=&reply('du2:'.&escape($directorypath).':'
9961: .&escape($getpropath).':'.&escape($uname).':'
9962: .&escape($udom),homeserver($uname,$udom));
9963: if ($listing eq 'unknown_cmd') {
9964: if ($getpropath) {
9965: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9966: }
9967: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9968: }
9969: return $listing;
9970: }
9971:
9972: sub is_locked {
9973: my ($file_name, $domain, $user, $which) = @_;
9974: my @check;
9975: my $is_locked;
9976: push (@check,$file_name);
9977: my %locked = &get('file_permissions',\@check,
9978: $env{'user.domain'},$env{'user.name'});
9979: my ($tmp)=keys(%locked);
9980: if ($tmp=~/^error:/) { undef(%locked); }
9981:
9982: if (ref($locked{$file_name}) eq 'ARRAY') {
9983: $is_locked = 'false';
9984: foreach my $entry (@{$locked{$file_name}}) {
9985: if (ref($entry) eq 'ARRAY') {
9986: $is_locked = 'true';
9987: if (ref($which) eq 'ARRAY') {
9988: push(@{$which},$entry);
9989: } else {
9990: last;
9991: }
9992: }
9993: }
9994: } else {
9995: $is_locked = 'false';
9996: }
9997: return $is_locked;
9998: }
9999:
10000: sub declutter_portfile {
10001: my ($file) = @_;
10002: $file =~ s{^(/portfolio/|portfolio/)}{/};
10003: return $file;
10004: }
10005:
10006: # ------------------------------------------------------------- Mark as Read Only
10007:
10008: sub mark_as_readonly {
10009: my ($domain,$user,$files,$what) = @_;
10010: my %current_permissions = &dump('file_permissions',$domain,$user);
10011: my ($tmp)=keys(%current_permissions);
10012: if ($tmp=~/^error:/) { undef(%current_permissions); }
10013: foreach my $file (@{$files}) {
10014: $file = &declutter_portfile($file);
10015: push(@{$current_permissions{$file}},$what);
10016: }
10017: &put('file_permissions',\%current_permissions,$domain,$user);
10018: return;
10019: }
10020:
10021: # ------------------------------------------------------------Save Selected Files
10022:
10023: sub save_selected_files {
10024: my ($user, $path, @files) = @_;
10025: my $filename = $user."savedfiles";
10026: my @other_files = &files_not_in_path($user, $path);
10027: open (OUT, '>'.$tmpdir.$filename);
10028: foreach my $file (@files) {
10029: print (OUT $env{'form.currentpath'}.$file."\n");
10030: }
10031: foreach my $file (@other_files) {
10032: print (OUT $file."\n");
10033: }
10034: close (OUT);
10035: return 'ok';
10036: }
10037:
10038: sub clear_selected_files {
10039: my ($user) = @_;
10040: my $filename = $user."savedfiles";
10041: open (OUT, '>'.LONCAPA::tempdir().$filename);
10042: print (OUT undef);
10043: close (OUT);
10044: return ("ok");
10045: }
10046:
10047: sub files_in_path {
10048: my ($user, $path) = @_;
10049: my $filename = $user."savedfiles";
10050: my %return_files;
10051: open (IN, '<'.LONCAPA::tempdir().$filename);
10052: while (my $line_in = <IN>) {
10053: chomp ($line_in);
10054: my @paths_and_file = split (m!/!, $line_in);
10055: my $file_part = pop (@paths_and_file);
10056: my $path_part = join ('/', @paths_and_file);
10057: $path_part.='/';
10058: my $path_and_file = $path_part.$file_part;
10059: if ($path_part eq $path) {
10060: $return_files{$file_part}= 'selected';
10061: }
10062: }
10063: close (IN);
10064: return (\%return_files);
10065: }
10066:
10067: # called in portfolio select mode, to show files selected NOT in current directory
10068: sub files_not_in_path {
10069: my ($user, $path) = @_;
10070: my $filename = $user."savedfiles";
10071: my @return_files;
10072: my $path_part;
10073: open(IN, '<'.LONCAPA::.$filename);
10074: while (my $line = <IN>) {
10075: #ok, I know it's clunky, but I want it to work
10076: my @paths_and_file = split(m|/|, $line);
10077: my $file_part = pop(@paths_and_file);
10078: chomp($file_part);
10079: my $path_part = join('/', @paths_and_file);
10080: $path_part .= '/';
10081: my $path_and_file = $path_part.$file_part;
10082: if ($path_part ne $path) {
10083: push(@return_files, ($path_and_file));
10084: }
10085: }
10086: close(OUT);
10087: return (@return_files);
10088: }
10089:
10090: #------------------------------Submitted/Handedback Portfolio Files Versioning
10091:
10092: sub portfiles_versioning {
10093: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10094: my $portfolio_root = '/userfiles/portfolio';
10095: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10096: foreach my $file (@{$portfiles}) {
10097: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10098: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10099: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10100: my $getpropath = 1;
10101: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10102: $stu_name,$getpropath);
10103: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10104: my $new_answer =
10105: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10106: if ($new_answer ne 'problem getting file') {
10107: push(@{$versioned_portfiles}, $directory.$new_answer);
10108: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10109: [$symb,$env{'request.course.id'},'graded']);
10110: }
10111: }
10112: }
10113:
10114: sub get_next_version {
10115: my ($answer_name, $answer_ext, $dir_list) = @_;
10116: my $version;
10117: if (ref($dir_list) eq 'ARRAY') {
10118: foreach my $row (@{$dir_list}) {
10119: my ($file) = split(/\&/,$row,2);
10120: my ($file_name,$file_version,$file_ext) =
10121: &file_name_version_ext($file);
10122: if (($file_name eq $answer_name) &&
10123: ($file_ext eq $answer_ext)) {
10124: # gets here if filename and extension match,
10125: # regardless of version
10126: if ($file_version ne '') {
10127: # a versioned file is found so save it for later
10128: if ($file_version > $version) {
10129: $version = $file_version;
10130: }
10131: }
10132: }
10133: }
10134: }
10135: $version ++;
10136: return($version);
10137: }
10138:
10139: sub version_selected_portfile {
10140: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10141: my ($answer_name,$answer_ver,$answer_ext) =
10142: &file_name_version_ext($file_name);
10143: my $new_answer;
10144: $env{'form.copy'} =
10145: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10146: if($env{'form.copy'} eq '-1') {
10147: $new_answer = 'problem getting file';
10148: } else {
10149: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10150: my $copy_result =
10151: &finishuserfileupload($stu_name,$domain,'copy',
10152: '/portfolio'.$directory.$new_answer);
10153: }
10154: undef($env{'form.copy'});
10155: return ($new_answer);
10156: }
10157:
10158: sub file_name_version_ext {
10159: my ($file)=@_;
10160: my @file_parts = split(/\./, $file);
10161: my ($name,$version,$ext);
10162: if (@file_parts > 1) {
10163: $ext=pop(@file_parts);
10164: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10165: $version=pop(@file_parts);
10166: }
10167: $name=join('.',@file_parts);
10168: } else {
10169: $name=join('.',@file_parts);
10170: }
10171: return($name,$version,$ext);
10172: }
10173:
10174: #----------------------------------------------Get portfolio file permissions
10175:
10176: sub get_portfile_permissions {
10177: my ($domain,$user) = @_;
10178: my %current_permissions = &dump('file_permissions',$domain,$user);
10179: my ($tmp)=keys(%current_permissions);
10180: if ($tmp=~/^error:/) { undef(%current_permissions); }
10181: return \%current_permissions;
10182: }
10183:
10184: #---------------------------------------------Get portfolio file access controls
10185:
10186: sub get_access_controls {
10187: my ($current_permissions,$group,$file) = @_;
10188: my %access;
10189: my $real_file = $file;
10190: $file =~ s/\.meta$//;
10191: if (defined($file)) {
10192: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10193: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10194: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10195: }
10196: }
10197: } else {
10198: foreach my $key (keys(%{$current_permissions})) {
10199: if ($key =~ /\0accesscontrol$/) {
10200: if (defined($group)) {
10201: if ($key !~ m-^\Q$group\E/-) {
10202: next;
10203: }
10204: }
10205: my ($fullpath) = split(/\0/,$key);
10206: if (ref($$current_permissions{$key}) eq 'HASH') {
10207: foreach my $control (keys(%{$$current_permissions{$key}})) {
10208: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10209: }
10210: }
10211: }
10212: }
10213: }
10214: return %access;
10215: }
10216:
10217: sub modify_access_controls {
10218: my ($file_name,$changes,$domain,$user)=@_;
10219: my ($outcome,$deloutcome);
10220: my %store_permissions;
10221: my %new_values;
10222: my %new_control;
10223: my %translation;
10224: my @deletions = ();
10225: my $now = time;
10226: if (exists($$changes{'activate'})) {
10227: if (ref($$changes{'activate'}) eq 'HASH') {
10228: my @newitems = sort(keys(%{$$changes{'activate'}}));
10229: my $numnew = scalar(@newitems);
10230: for (my $i=0; $i<$numnew; $i++) {
10231: my $newkey = $newitems[$i];
10232: my $newid = &Apache::loncommon::get_cgi_id();
10233: if ($newkey =~ /^\d+:/) {
10234: $newkey =~ s/^(\d+)/$newid/;
10235: $translation{$1} = $newid;
10236: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10237: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10238: $translation{$1} = $newid;
10239: }
10240: $new_values{$file_name."\0".$newkey} =
10241: $$changes{'activate'}{$newitems[$i]};
10242: $new_control{$newkey} = $now;
10243: }
10244: }
10245: }
10246: my %todelete;
10247: my %changed_items;
10248: foreach my $action ('delete','update') {
10249: if (exists($$changes{$action})) {
10250: if (ref($$changes{$action}) eq 'HASH') {
10251: foreach my $key (keys(%{$$changes{$action}})) {
10252: my ($itemnum) = ($key =~ /^([^:]+):/);
10253: if ($action eq 'delete') {
10254: $todelete{$itemnum} = 1;
10255: } else {
10256: $changed_items{$itemnum} = $key;
10257: }
10258: }
10259: }
10260: }
10261: }
10262: # get lock on access controls for file.
10263: my $lockhash = {
10264: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10265: ':'.$env{'user.domain'},
10266: };
10267: my $tries = 0;
10268: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10269:
10270: while (($gotlock ne 'ok') && $tries < 10) {
10271: $tries ++;
10272: sleep(0.1);
10273: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10274: }
10275: if ($gotlock eq 'ok') {
10276: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10277: my ($tmp)=keys(%curr_permissions);
10278: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10279: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10280: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10281: if (ref($curr_controls) eq 'HASH') {
10282: foreach my $control_item (keys(%{$curr_controls})) {
10283: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10284: if (defined($todelete{$itemnum})) {
10285: push(@deletions,$file_name."\0".$control_item);
10286: } else {
10287: if (defined($changed_items{$itemnum})) {
10288: $new_control{$changed_items{$itemnum}} = $now;
10289: push(@deletions,$file_name."\0".$control_item);
10290: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10291: } else {
10292: $new_control{$control_item} = $$curr_controls{$control_item};
10293: }
10294: }
10295: }
10296: }
10297: }
10298: my ($group);
10299: if (&is_course($domain,$user)) {
10300: ($group,my $file) = split(/\//,$file_name,2);
10301: }
10302: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10303: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10304: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10305: # remove lock
10306: my @del_lock = ($file_name."\0".'locked_access_records');
10307: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10308: my $sqlresult =
10309: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10310: $group);
10311: } else {
10312: $outcome = "error: could not obtain lockfile\n";
10313: }
10314: return ($outcome,$deloutcome,\%new_values,\%translation);
10315: }
10316:
10317: sub make_public_indefinitely {
10318: my (@requrl) = @_;
10319: return &automated_portfile_access('public',\@requrl);
10320: }
10321:
10322: sub automated_portfile_access {
10323: my ($accesstype,$addsref,$delsref,$info) = @_;
10324: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10325: return 'invalid';
10326: }
10327: my %urls;
10328: if (ref($addsref) eq 'ARRAY') {
10329: foreach my $requrl (@{$addsref}) {
10330: if (&is_portfolio_url($requrl)) {
10331: unless (exists($urls{$requrl})) {
10332: $urls{$requrl} = 'add';
10333: }
10334: }
10335: }
10336: }
10337: if (ref($delsref) eq 'ARRAY') {
10338: foreach my $requrl (@{$delsref}) {
10339: if (&is_portfolio_url($requrl)) {
10340: unless (exists($urls{$requrl})) {
10341: $urls{$requrl} = 'delete';
10342: }
10343: }
10344: }
10345: }
10346: unless (keys(%urls)) {
10347: return 'invalid';
10348: }
10349: my $ip;
10350: if ($accesstype eq 'ip') {
10351: if (ref($info) eq 'HASH') {
10352: if ($info->{'ip'} ne '') {
10353: $ip = $info->{'ip'};
10354: }
10355: }
10356: if ($ip eq '') {
10357: return 'invalid';
10358: }
10359: }
10360: my $errors;
10361: my $now = time;
10362: my %current_perms;
10363: foreach my $requrl (sort(keys(%urls))) {
10364: my $action;
10365: if ($urls{$requrl} eq 'add') {
10366: $action = 'activate';
10367: } else {
10368: $action = 'none';
10369: }
10370: my $aclnum = 0;
10371: my (undef,$udom,$unum,$file_name,$group) =
10372: &parse_portfolio_url($requrl);
10373: unless (exists($current_perms{$unum.':'.$udom})) {
10374: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10375: }
10376: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10377: $group,$file_name);
10378: foreach my $key (keys(%{$access_controls{$file_name}})) {
10379: my ($num,$scope,$end,$start) =
10380: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10381: if ($scope eq $accesstype) {
10382: if (($start <= $now) && ($end == 0)) {
10383: if ($accesstype eq 'ip') {
10384: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10385: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10386: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10387: if ($urls{$requrl} eq 'add') {
10388: $action = 'none';
10389: last;
10390: } else {
10391: $action = 'delete';
10392: $aclnum = $num;
10393: last;
10394: }
10395: }
10396: }
10397: }
10398: } elsif ($accesstype eq 'public') {
10399: if ($urls{$requrl} eq 'add') {
10400: $action = 'none';
10401: last;
10402: } else {
10403: $action = 'delete';
10404: $aclnum = $num;
10405: last;
10406: }
10407: }
10408: } elsif ($accesstype eq 'public') {
10409: $action = 'update';
10410: $aclnum = $num;
10411: last;
10412: }
10413: }
10414: }
10415: if ($action eq 'none') {
10416: next;
10417: } else {
10418: my %changes;
10419: my $newend = 0;
10420: my $newstart = $now;
10421: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10422: $changes{$action}{$newkey} = {
10423: type => $accesstype,
10424: time => {
10425: start => $newstart,
10426: end => $newend,
10427: },
10428: };
10429: if ($accesstype eq 'ip') {
10430: $changes{$action}{$newkey}{'ip'} = [$ip];
10431: }
10432: my ($outcome,$deloutcome,$new_values,$translation) =
10433: &modify_access_controls($file_name,\%changes,$udom,$unum);
10434: unless ($outcome eq 'ok') {
10435: $errors .= $outcome.' ';
10436: }
10437: }
10438: }
10439: if ($errors) {
10440: $errors =~ s/\s$//;
10441: return $errors;
10442: } else {
10443: return 'ok';
10444: }
10445: }
10446:
10447: #------------------------------------------------------Get Marked as Read Only
10448:
10449: sub get_marked_as_readonly {
10450: my ($domain,$user,$what,$group) = @_;
10451: my $current_permissions = &get_portfile_permissions($domain,$user);
10452: my @readonly_files;
10453: my $cmp1=$what;
10454: if (ref($what)) { $cmp1=join('',@{$what}) };
10455: while (my ($file_name,$value) = each(%{$current_permissions})) {
10456: if (defined($group)) {
10457: if ($file_name !~ m-^\Q$group\E/-) {
10458: next;
10459: }
10460: }
10461: if (ref($value) eq "ARRAY"){
10462: foreach my $stored_what (@{$value}) {
10463: my $cmp2=$stored_what;
10464: if (ref($stored_what) eq 'ARRAY') {
10465: $cmp2=join('',@{$stored_what});
10466: }
10467: if ($cmp1 eq $cmp2) {
10468: push(@readonly_files, $file_name);
10469: last;
10470: } elsif (!defined($what)) {
10471: push(@readonly_files, $file_name);
10472: last;
10473: }
10474: }
10475: }
10476: }
10477: return @readonly_files;
10478: }
10479: #-----------------------------------------------------------Get Marked as Read Only Hash
10480:
10481: sub get_marked_as_readonly_hash {
10482: my ($current_permissions,$group,$what) = @_;
10483: my %readonly_files;
10484: while (my ($file_name,$value) = each(%{$current_permissions})) {
10485: if (defined($group)) {
10486: if ($file_name !~ m-^\Q$group\E/-) {
10487: next;
10488: }
10489: }
10490: if (ref($value) eq "ARRAY"){
10491: foreach my $stored_what (@{$value}) {
10492: if (ref($stored_what) eq 'ARRAY') {
10493: foreach my $lock_descriptor(@{$stored_what}) {
10494: if ($lock_descriptor eq 'graded') {
10495: $readonly_files{$file_name} = 'graded';
10496: } elsif ($lock_descriptor eq 'handback') {
10497: $readonly_files{$file_name} = 'handback';
10498: } else {
10499: if (!exists($readonly_files{$file_name})) {
10500: $readonly_files{$file_name} = 'locked';
10501: }
10502: }
10503: }
10504: }
10505: }
10506: }
10507: }
10508: return %readonly_files;
10509: }
10510: # ------------------------------------------------------------ Unmark as Read Only
10511:
10512: sub unmark_as_readonly {
10513: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10514: # for portfolio submissions, $what contains [$symb,$crsid]
10515: my ($domain,$user,$what,$file_name,$group) = @_;
10516: $file_name = &declutter_portfile($file_name);
10517: my $symb_crs = $what;
10518: if (ref($what)) { $symb_crs=join('',@$what); }
10519: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10520: my ($tmp)=keys(%current_permissions);
10521: if ($tmp=~/^error:/) { undef(%current_permissions); }
10522: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10523: foreach my $file (@readonly_files) {
10524: my $clean_file = &declutter_portfile($file);
10525: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10526: my $current_locks = $current_permissions{$file};
10527: my @new_locks;
10528: my @del_keys;
10529: if (ref($current_locks) eq "ARRAY"){
10530: foreach my $locker (@{$current_locks}) {
10531: my $compare=$locker;
10532: if (ref($locker) eq 'ARRAY') {
10533: $compare=join('',@{$locker});
10534: if ($compare ne $symb_crs) {
10535: push(@new_locks, $locker);
10536: }
10537: }
10538: }
10539: if (scalar(@new_locks) > 0) {
10540: $current_permissions{$file} = \@new_locks;
10541: } else {
10542: push(@del_keys, $file);
10543: &del('file_permissions',\@del_keys, $domain, $user);
10544: delete($current_permissions{$file});
10545: }
10546: }
10547: }
10548: &put('file_permissions',\%current_permissions,$domain,$user);
10549: return;
10550: }
10551:
10552: # ------------------------------------------------------------ Directory lister
10553:
10554: sub dirlist {
10555: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10556: $uri=~s/^\///;
10557: $uri=~s/\/$//;
10558: my ($udom, $uname);
10559: if ($getuserdir) {
10560: $udom = $userdomain;
10561: $uname = $username;
10562: } else {
10563: (undef,$udom,$uname)=split(/\//,$uri);
10564: if(defined($userdomain)) {
10565: $udom = $userdomain;
10566: }
10567: if(defined($username)) {
10568: $uname = $username;
10569: }
10570: }
10571: my ($dirRoot,$listing,@listing_results);
10572:
10573: $dirRoot = $perlvar{'lonDocRoot'};
10574: if (defined($getpropath)) {
10575: $dirRoot = &propath($udom,$uname);
10576: $dirRoot =~ s/\/$//;
10577: } elsif (defined($getuserdir)) {
10578: my $subdir=$uname.'__';
10579: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10580: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10581: ."/$udom/$subdir/$uname";
10582: } elsif (defined($alternateRoot)) {
10583: $dirRoot = $alternateRoot;
10584: }
10585:
10586: if($udom) {
10587: if($uname) {
10588: my $uhome = &homeserver($uname,$udom);
10589: if ($uhome eq 'no_host') {
10590: return ([],'no_host');
10591: }
10592: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10593: .$getuserdir.':'.&escape($dirRoot)
10594: .':'.&escape($uname).':'.&escape($udom),$uhome);
10595: if ($listing eq 'unknown_cmd') {
10596: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10597: } else {
10598: @listing_results = map { &unescape($_); } split(/:/,$listing);
10599: }
10600: if ($listing eq 'unknown_cmd') {
10601: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10602: @listing_results = split(/:/,$listing);
10603: } else {
10604: @listing_results = map { &unescape($_); } split(/:/,$listing);
10605: }
10606: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10607: ($listing eq 'rejected') || ($listing eq 'refused') ||
10608: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10609: return ([],$listing);
10610: } else {
10611: return (\@listing_results);
10612: }
10613: } elsif(!$alternateRoot) {
10614: my (%allusers,%listerror);
10615: my %servers = &get_servers($udom,'library');
10616: foreach my $tryserver (keys(%servers)) {
10617: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10618: &escape($udom),$tryserver);
10619: if ($listing eq 'unknown_cmd') {
10620: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10621: $udom, $tryserver);
10622: } else {
10623: @listing_results = map { &unescape($_); } split(/:/,$listing);
10624: }
10625: if ($listing eq 'unknown_cmd') {
10626: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10627: $udom, $tryserver);
10628: @listing_results = split(/:/,$listing);
10629: } else {
10630: @listing_results =
10631: map { &unescape($_); } split(/:/,$listing);
10632: }
10633: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10634: ($listing eq 'rejected') || ($listing eq 'refused') ||
10635: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10636: $listerror{$tryserver} = $listing;
10637: } else {
10638: foreach my $line (@listing_results) {
10639: my ($entry) = split(/&/,$line,2);
10640: $allusers{$entry} = 1;
10641: }
10642: }
10643: }
10644: my @alluserslist=();
10645: foreach my $user (sort(keys(%allusers))) {
10646: push(@alluserslist,$user.'&user');
10647: }
10648:
10649: if (!%listerror) {
10650: # no errors
10651: return (\@alluserslist);
10652: } elsif (scalar(keys(%servers)) == 1) {
10653: # one library server, one error
10654: my ($key) = keys(%listerror);
10655: return (\@alluserslist, $listerror{$key});
10656: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10657: # con_lost indicates that we might miss data from at least one
10658: # library server
10659: return (\@alluserslist, 'con_lost');
10660: } else {
10661: # multiple library servers and no con_lost -> data should be
10662: # complete.
10663: return (\@alluserslist);
10664: }
10665:
10666: } else {
10667: return ([],'missing username');
10668: }
10669: } elsif(!defined($getpropath)) {
10670: my $path = $perlvar{'lonDocRoot'}.'/res/';
10671: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10672: return (\@all_domains);
10673: } else {
10674: return ([],'missing domain');
10675: }
10676: }
10677:
10678: # --------------------------------------------- GetFileTimestamp
10679: # This function utilizes dirlist and returns the date stamp for
10680: # when it was last modified. It will also return an error of -1
10681: # if an error occurs
10682:
10683: sub GetFileTimestamp {
10684: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10685: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10686: $studentName = &LONCAPA::clean_username($studentName);
10687: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10688: undef,$getuserdir);
10689: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10690: return -1;
10691: }
10692: if (ref($fileref) eq 'ARRAY') {
10693: my @stats = split('&',$fileref->[0]);
10694: # @stats contains first the filename, then the stat output
10695: return $stats[10]; # so this is 10 instead of 9.
10696: } else {
10697: return -1;
10698: }
10699: }
10700:
10701: sub stat_file {
10702: my ($uri) = @_;
10703: $uri = &clutter_with_no_wrapper($uri);
10704:
10705: my ($udom,$uname,$file);
10706: if ($uri =~ m-^/(uploaded|editupload)/-) {
10707: ($udom,$uname,$file) =
10708: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10709: $file = 'userfiles/'.$file;
10710: }
10711: if ($uri =~ m-^/res/-) {
10712: ($udom,$uname) =
10713: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10714: $file = $uri;
10715: }
10716:
10717: if (!$udom || !$uname || !$file) {
10718: # unable to handle the uri
10719: return ();
10720: }
10721: my $getpropath;
10722: if ($file =~ /^userfiles\//) {
10723: $getpropath = 1;
10724: }
10725: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10726: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10727: return ();
10728: } else {
10729: if (ref($listref) eq 'ARRAY') {
10730: my @stats = split('&',$listref->[0]);
10731: shift(@stats); #filename is first
10732: return @stats;
10733: }
10734: }
10735: return ();
10736: }
10737:
10738: # --------------------------------------------------------- recursedirs
10739: # Recursive function to traverse either a specific user's Authoring Space
10740: # or corresponding Published Resource Space, and populate the hash ref:
10741: # $dirhashref with URLs of all directories, and if $filehashref hash
10742: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
10743: # or .rights files in resource space, and .meta, .save, .log, and .bak
10744: # files in Authoring Space.
10745: #
10746: # Inputs:
10747: #
10748: # $is_home - true if current server is home server for user's space
10749: # $context - either: priv, or res respectively for Authoring or Resource Space.
10750: # $docroot - Document root (i.e., /home/httpd/html
10751: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
10752: # $relpath - Current path (relative to top level).
10753: # $dirhashref - reference to hash to populate with URLs of directories (Required)
10754: # $filehashref - reference to hash to populate with URLs of files (Optional)
10755: #
10756: # Returns: nothing
10757: #
10758: # Side Effects: populates $dirhashref, and $filehashref (if provided).
10759: #
10760: # Currently used by interface/londocs.pm to create linked select boxes for
10761: # directory and filename to import a Course "Author" resource into a course, and
10762: # also to create linked select boxes for Authoring Space and Directory to choose
10763: # save location for creation of a new "standard" problem from the Course Editor.
10764: #
10765:
10766: sub recursedirs {
10767: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
10768: return unless (ref($dirhashref) eq 'HASH');
10769: my $currpath = $docroot.$toppath;
10770: if ($relpath) {
10771: $currpath .= "/$relpath";
10772: }
10773: my $savefile;
10774: if (ref($filehashref)) {
10775: $savefile = 1;
10776: }
10777: if ($is_home) {
10778: if (opendir(my $dirh,$currpath)) {
10779: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
10780: next if ($item eq '');
10781: if (-d "$currpath/$item") {
10782: my $newpath;
10783: if ($relpath) {
10784: $newpath = "$relpath/$item";
10785: } else {
10786: $newpath = $item;
10787: }
10788: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
10789: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
10790: } elsif ($savefile) {
10791: if ($context eq 'priv') {
10792: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
10793: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10794: }
10795: } else {
10796: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
10797: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10798: }
10799: }
10800: }
10801: }
10802: closedir($dirh);
10803: }
10804: } else {
10805: my ($dirlistref,$listerror) =
10806: &dirlist($toppath.$relpath);
10807: my @dir_lines;
10808: my $dirptr=16384;
10809: if (ref($dirlistref) eq 'ARRAY') {
10810: foreach my $dir_line (sort
10811: {
10812: my ($afile)=split('&',$a,2);
10813: my ($bfile)=split('&',$b,2);
10814: return (lc($afile) cmp lc($bfile));
10815: } (@{$dirlistref})) {
10816: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
10817: split(/\&/,$dir_line,16);
10818: $item =~ s/\s+$//;
10819: next if (($item =~ /^\.\.?$/) || ($obs));
10820: if ($dirptr&$testdir) {
10821: my $newpath;
10822: if ($relpath) {
10823: $newpath = "$relpath/$item";
10824: } else {
10825: $relpath = '/';
10826: $newpath = $item;
10827: }
10828: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
10829: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
10830: } elsif ($savefile) {
10831: if ($context eq 'priv') {
10832: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
10833: $filehashref->{$relpath}{$item} = 1;
10834: }
10835: } else {
10836: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
10837: $filehashref->{$relpath}{$item} = 1;
10838: }
10839: }
10840: }
10841: }
10842: }
10843: }
10844: return;
10845: }
10846:
10847: # -------------------------------------------------------- Value of a Condition
10848:
10849: # gets the value of a specific preevaluated condition
10850: # stored in the string $env{user.state.<cid>}
10851: # or looks up a condition reference in the bighash and if if hasn't
10852: # already been evaluated recurses into docondval to get the value of
10853: # the condition, then memoizing it to
10854: # $env{user.state.<cid>.<condition>}
10855: sub directcondval {
10856: my $number=shift;
10857: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
10858: &Apache::lonuserstate::evalstate();
10859: }
10860: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
10861: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
10862: } elsif ($number =~ /^_/) {
10863: my $sub_condition;
10864: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10865: &GDBM_READER(),0640)) {
10866: $sub_condition=$bighash{'conditions'.$number};
10867: untie(%bighash);
10868: }
10869: my $value = &docondval($sub_condition);
10870: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
10871: return $value;
10872: }
10873: if ($env{'user.state.'.$env{'request.course.id'}}) {
10874: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
10875: } else {
10876: return 2;
10877: }
10878: }
10879:
10880: # get the collection of conditions for this resource
10881: sub condval {
10882: my $condidx=shift;
10883: my $allpathcond='';
10884: foreach my $cond (split(/\|/,$condidx)) {
10885: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
10886: $allpathcond.=
10887: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
10888: }
10889: }
10890: $allpathcond=~s/\|$//;
10891: return &docondval($allpathcond);
10892: }
10893:
10894: #evaluates an expression of conditions
10895: sub docondval {
10896: my ($allpathcond) = @_;
10897: my $result=0;
10898: if ($env{'request.course.id'}
10899: && defined($allpathcond)) {
10900: my $operand='|';
10901: my @stack;
10902: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
10903: if ($chunk eq '(') {
10904: push @stack,($operand,$result);
10905: } elsif ($chunk eq ')') {
10906: my $before=pop @stack;
10907: if (pop @stack eq '&') {
10908: $result=$result>$before?$before:$result;
10909: } else {
10910: $result=$result>$before?$result:$before;
10911: }
10912: } elsif (($chunk eq '&') || ($chunk eq '|')) {
10913: $operand=$chunk;
10914: } else {
10915: my $new=directcondval($chunk);
10916: if ($operand eq '&') {
10917: $result=$result>$new?$new:$result;
10918: } else {
10919: $result=$result>$new?$result:$new;
10920: }
10921: }
10922: }
10923: }
10924: return $result;
10925: }
10926:
10927: # ---------------------------------------------------- Devalidate courseresdata
10928:
10929: sub devalidatecourseresdata {
10930: my ($coursenum,$coursedomain)=@_;
10931: my $hashid=$coursenum.':'.$coursedomain;
10932: &devalidate_cache_new('courseres',$hashid);
10933: }
10934:
10935:
10936: # --------------------------------------------------- Course Resourcedata Query
10937: #
10938: # Parameters:
10939: # $coursenum - Number of the course.
10940: # $coursedomain - Domain at which the course was created.
10941: # Returns:
10942: # A hash of the course parameters along (I think) with timestamps
10943: # and version info.
10944:
10945: sub get_courseresdata {
10946: my ($coursenum,$coursedomain)=@_;
10947: my $coursehom=&homeserver($coursenum,$coursedomain);
10948: my $hashid=$coursenum.':'.$coursedomain;
10949: my ($result,$cached)=&is_cached_new('courseres',$hashid);
10950: my %dumpreply;
10951: unless (defined($cached)) {
10952: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
10953: $result=\%dumpreply;
10954: my ($tmp) = keys(%dumpreply);
10955: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10956: &do_cache_new('courseres',$hashid,$result,600);
10957: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
10958: return $tmp;
10959: } elsif ($tmp =~ /^(error)/) {
10960: $result=undef;
10961: &do_cache_new('courseres',$hashid,$result,600);
10962: }
10963: }
10964: return $result;
10965: }
10966:
10967: sub devalidateuserresdata {
10968: my ($uname,$udom)=@_;
10969: my $hashid="$udom:$uname";
10970: &devalidate_cache_new('userres',$hashid);
10971: }
10972:
10973: sub get_userresdata {
10974: my ($uname,$udom)=@_;
10975: #most student don\'t have any data set, check if there is some data
10976: if (&EXT_cache_status($udom,$uname)) { return undef; }
10977:
10978: my $hashid="$udom:$uname";
10979: my ($result,$cached)=&is_cached_new('userres',$hashid);
10980: if (!defined($cached)) {
10981: my %resourcedata=&dump('resourcedata',$udom,$uname);
10982: $result=\%resourcedata;
10983: &do_cache_new('userres',$hashid,$result,600);
10984: }
10985: my ($tmp)=keys(%$result);
10986: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
10987: return $result;
10988: }
10989: #error 2 occurs when the .db doesn't exist
10990: if ($tmp!~/error: 2 /) {
10991: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
10992: &logthis("<font color=\"blue\">WARNING:".
10993: " Trying to get resource data for ".
10994: $uname." at ".$udom.": ".
10995: $tmp."</font>");
10996: }
10997: } elsif ($tmp=~/error: 2 /) {
10998: #&EXT_cache_set($udom,$uname);
10999: &do_cache_new('userres',$hashid,undef,600);
11000: undef($tmp); # not really an error so don't send it back
11001: }
11002: return $tmp;
11003: }
11004: #----------------------------------------------- resdata - return resource data
11005: # Purpose:
11006: # Return resource data for either users or for a course.
11007: # Parameters:
11008: # $name - Course/user name.
11009: # $domain - Name of the domain the user/course is registered on.
11010: # $type - Type of thing $name is (must be 'course' or 'user')
11011: # $mapp - decluttered URL of enclosing map
11012: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11013: # $recurseup - Ref to array of map URLs, starting with map containing
11014: # $mapp up through hierarchy of nested maps to top level map.
11015: # $courseid - CourseID (first part of param identifier).
11016: # $modifier - Middle part of param identifier.
11017: # $what - Last part of param identifier.
11018: # @which - Array of names of resources desired.
11019: # Returns:
11020: # The value of the first reasource in @which that is found in the
11021: # resource hash.
11022: # Exceptional Conditions:
11023: # If the $type passed in is not valid (not the string 'course' or
11024: # 'user', an undefined reference is returned.
11025: # If none of the resources are found, an undef is returned
11026: sub resdata {
11027: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11028: $modifier,$what,@which)=@_;
11029: my $result;
11030: if ($type eq 'course') {
11031: $result=&get_courseresdata($name,$domain);
11032: } elsif ($type eq 'user') {
11033: $result=&get_userresdata($name,$domain);
11034: }
11035: if (!ref($result)) { return $result; }
11036: foreach my $item (@which) {
11037: if ($item->[1] eq 'course') {
11038: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11039: unless ($$recursed) {
11040: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11041: $$recursed = 1;
11042: }
11043: foreach my $item (@${recurseup}) {
11044: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11045: last if (defined($result->{$norecursechk}));
11046: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11047: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11048: }
11049: }
11050: }
11051: if (defined($result->{$item->[0]})) {
11052: return [$result->{$item->[0]},$item->[1]];
11053: }
11054: }
11055: return undef;
11056: }
11057:
11058: sub get_domain_ltitools {
11059: my ($cdom) = @_;
11060: my %ltitools;
11061: my ($result,$cached)=&is_cached_new('ltitools',$cdom);
11062: if (defined($cached)) {
11063: if (ref($result) eq 'HASH') {
11064: %ltitools = %{$result};
11065: }
11066: } else {
11067: my %domconfig = &get_dom('configuration',['ltitools'],$cdom);
11068: if (ref($domconfig{'ltitools'}) eq 'HASH') {
11069: %ltitools = %{$domconfig{'ltitools'}};
11070: my %encdomconfig = &get_dom('encconfig',['ltitools'],$cdom);
11071: if (ref($encdomconfig{'ltitools'}) eq 'HASH') {
11072: foreach my $id (keys(%ltitools)) {
11073: if (ref($encdomconfig{'ltitools'}{$id}) eq 'HASH') {
11074: foreach my $item ('key','secret') {
11075: $ltitools{$id}{$item} = $encdomconfig{'ltitools'}{$id}{$item};
11076: }
11077: }
11078: }
11079: }
11080: }
11081: my $cachetime = 24*60*60;
11082: &do_cache_new('ltitools',$cdom,\%ltitools,$cachetime);
11083: }
11084: return %ltitools;
11085: }
11086:
11087: sub get_numsuppfiles {
11088: my ($cnum,$cdom,$ignorecache)=@_;
11089: my $hashid=$cnum.':'.$cdom;
11090: my ($suppcount,$cached);
11091: unless ($ignorecache) {
11092: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11093: }
11094: unless (defined($cached)) {
11095: my $chome=&homeserver($cnum,$cdom);
11096: unless ($chome eq 'no_host') {
11097: ($suppcount,my $errors) = (0,0);
11098: my $suppmap = 'supplemental.sequence';
11099: ($suppcount,$errors) =
11100: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
11101: }
11102: &do_cache_new('suppcount',$hashid,$suppcount,600);
11103: }
11104: return $suppcount;
11105: }
11106:
11107: #
11108: # EXT resource caching routines
11109: #
11110:
11111: {
11112: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11113: #
11114: # The course for which we cache
11115: my $cachedmapkey='';
11116: # The cached recursive maps for this course
11117: my %cachedmaps=();
11118: # When this was last done
11119: my $cachedmaptime='';
11120:
11121: sub clear_EXT_cache_status {
11122: &delenv('cache.EXT.');
11123: }
11124:
11125: sub EXT_cache_status {
11126: my ($target_domain,$target_user) = @_;
11127: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11128: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11129: # We know already the user has no data
11130: return 1;
11131: } else {
11132: return 0;
11133: }
11134: }
11135:
11136: sub EXT_cache_set {
11137: my ($target_domain,$target_user) = @_;
11138: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11139: #&appenv({$cachename => time});
11140: }
11141:
11142: # --------------------------------------------------------- Value of a Variable
11143: sub EXT {
11144:
11145: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11146: unless ($varname) { return ''; }
11147: #get real user name/domain, courseid and symb
11148: my $courseid;
11149: my $publicuser;
11150: if ($symbparm) {
11151: $symbparm=&get_symb_from_alias($symbparm);
11152: }
11153: if (!($uname && $udom)) {
11154: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11155: if (!$symbparm) { $symbparm=$cursymb; }
11156: } else {
11157: $courseid=$env{'request.course.id'};
11158: }
11159: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11160: my $rest;
11161: if (defined($therest[0])) {
11162: $rest=join('.',@therest);
11163: } else {
11164: $rest='';
11165: }
11166:
11167: my $qualifierrest=$qualifier;
11168: if ($rest) { $qualifierrest.='.'.$rest; }
11169: my $spacequalifierrest=$space;
11170: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11171: if ($realm eq 'user') {
11172: # --------------------------------------------------------------- user.resource
11173: if ($space eq 'resource') {
11174: if ( (defined($Apache::lonhomework::parsing_a_problem)
11175: || defined($Apache::lonhomework::parsing_a_task))
11176: &&
11177: ($symbparm eq &symbread()) ) {
11178: # if we are in the middle of processing the resource the
11179: # get the value we are planning on committing
11180: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11181: return $Apache::lonhomework::results{$qualifierrest};
11182: } else {
11183: return $Apache::lonhomework::history{$qualifierrest};
11184: }
11185: } else {
11186: my %restored;
11187: if ($publicuser || $env{'request.state'} eq 'construct') {
11188: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11189: } else {
11190: %restored=&restore($symbparm,$courseid,$udom,$uname);
11191: }
11192: return $restored{$qualifierrest};
11193: }
11194: # ----------------------------------------------------------------- user.access
11195: } elsif ($space eq 'access') {
11196: # FIXME - not supporting calls for a specific user
11197: return &allowed($qualifier,$rest);
11198: # ------------------------------------------ user.preferences, user.environment
11199: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11200: if (($uname eq $env{'user.name'}) &&
11201: ($udom eq $env{'user.domain'})) {
11202: return $env{join('.',('environment',$qualifierrest))};
11203: } else {
11204: my %returnhash;
11205: if (!$publicuser) {
11206: %returnhash=&userenvironment($udom,$uname,
11207: $qualifierrest);
11208: }
11209: return $returnhash{$qualifierrest};
11210: }
11211: # ----------------------------------------------------------------- user.course
11212: } elsif ($space eq 'course') {
11213: # FIXME - not supporting calls for a specific user
11214: return $env{join('.',('request.course',$qualifier))};
11215: # ------------------------------------------------------------------- user.role
11216: } elsif ($space eq 'role') {
11217: # FIXME - not supporting calls for a specific user
11218: my ($role,$where)=split(/\./,$env{'request.role'});
11219: if ($qualifier eq 'value') {
11220: return $role;
11221: } elsif ($qualifier eq 'extent') {
11222: return $where;
11223: }
11224: # ----------------------------------------------------------------- user.domain
11225: } elsif ($space eq 'domain') {
11226: return $udom;
11227: # ------------------------------------------------------------------- user.name
11228: } elsif ($space eq 'name') {
11229: return $uname;
11230: # ---------------------------------------------------- Any other user namespace
11231: } else {
11232: my %reply;
11233: if (!$publicuser) {
11234: %reply=&get($space,[$qualifierrest],$udom,$uname);
11235: }
11236: return $reply{$qualifierrest};
11237: }
11238: } elsif ($realm eq 'query') {
11239: # ---------------------------------------------- pull stuff out of query string
11240: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11241: [$spacequalifierrest]);
11242: return $env{'form.'.$spacequalifierrest};
11243: } elsif ($realm eq 'request') {
11244: # ------------------------------------------------------------- request.browser
11245: if ($space eq 'browser') {
11246: return $env{'browser.'.$qualifier};
11247: # ------------------------------------------------------------ request.filename
11248: } else {
11249: return $env{'request.'.$spacequalifierrest};
11250: }
11251: } elsif ($realm eq 'course') {
11252: # ---------------------------------------------------------- course.description
11253: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11254: } elsif ($realm eq 'resource') {
11255:
11256: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11257: if (!$symbparm) { $symbparm=&symbread(); }
11258: }
11259:
11260: if ($qualifier eq '') {
11261: if ($space eq 'title') {
11262: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11263: return &gettitle($symbparm);
11264: }
11265:
11266: if ($space eq 'map') {
11267: my ($map) = &decode_symb($symbparm);
11268: return &symbread($map);
11269: }
11270: if ($space eq 'maptitle') {
11271: my ($map) = &decode_symb($symbparm);
11272: return &gettitle($map);
11273: }
11274: if ($space eq 'filename') {
11275: if ($symbparm) {
11276: return &clutter((&decode_symb($symbparm))[2]);
11277: }
11278: return &hreflocation('',$env{'request.filename'});
11279: }
11280:
11281: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11282: if ($space eq 'visibleparts') {
11283: my $navmap = Apache::lonnavmaps::navmap->new();
11284: my $item;
11285: if (ref($navmap)) {
11286: my $res = $navmap->getBySymb($symbparm);
11287: my $parts = $res->parts();
11288: if (ref($parts) eq 'ARRAY') {
11289: $item = join(',',@{$parts});
11290: }
11291: undef($navmap);
11292: }
11293: return $item;
11294: }
11295: }
11296: }
11297:
11298: my ($section, $group, @groups, @recurseup, $recursed);
11299: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11300: if (($courseid eq '') && ($cid)) {
11301: $courseid = $cid;
11302: }
11303: if (($symbparm && $courseid) &&
11304: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11305:
11306: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11307:
11308: # ----------------------------------------------------- Cascading lookup scheme
11309: my $symbp=$symbparm;
11310: $mapp=&deversion((&decode_symb($symbp))[0]);
11311: my $symbparm=$symbp.'.'.$spacequalifierrest;
11312: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11313: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11314: if (($env{'user.name'} eq $uname) &&
11315: ($env{'user.domain'} eq $udom)) {
11316: $section=$env{'request.course.sec'};
11317: @groups = split(/:/,$env{'request.course.groups'});
11318: @groups=&sort_course_groups($courseid,@groups);
11319: } else {
11320: if (! defined($usection)) {
11321: $section=&getsection($udom,$uname,$courseid);
11322: } else {
11323: $section = $usection;
11324: }
11325: @groups = &get_users_groups($udom,$uname,$courseid);
11326: }
11327:
11328: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11329: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11330: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11331: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11332:
11333: $courselevel=$courseid.'.'.$spacequalifierrest;
11334: my $courselevelr=$courseid.'.'.$symbparm;
11335: $courseleveli=$courseid.'.'.$recurseparm;
11336: $courselevelm=$courseid.'.'.$mapparm;
11337:
11338: # ----------------------------------------------------------- first, check user
11339:
11340: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11341: \@recurseup,$courseid,'.',$spacequalifierrest,
11342: ([$courselevelr,'resource'],
11343: [$courselevelm,'map' ],
11344: [$courseleveli,'map' ],
11345: [$courselevel, 'course' ]));
11346: if (defined($userreply)) { return &get_reply($userreply); }
11347:
11348: # ------------------------------------------------ second, check some of course
11349: my $coursereply;
11350: if (@groups > 0) {
11351: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11352: $recurseparm,$mapparm,$spacequalifierrest,
11353: $mapp,\$recursed,\@recurseup);
11354: if (defined($coursereply)) { return &get_reply($coursereply); }
11355: }
11356:
11357: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11358: $env{'course.'.$courseid.'.domain'},
11359: 'course',$mapp,\$recursed,\@recurseup,
11360: $courseid,'.['.$section.'].',$spacequalifierrest,
11361: ([$seclevelr, 'resource'],
11362: [$seclevelm, 'map' ],
11363: [$secleveli, 'map' ],
11364: [$seclevel, 'course' ],
11365: [$courselevelr,'resource']));
11366: if (defined($coursereply)) { return &get_reply($coursereply); }
11367:
11368: # ------------------------------------------------------ third, check map parms
11369: my %parmhash=();
11370: my $thisparm='';
11371: if (tie(%parmhash,'GDBM_File',
11372: $env{'request.course.fn'}.'_parms.db',
11373: &GDBM_READER(),0640)) {
11374: $thisparm=$parmhash{$symbparm};
11375: untie(%parmhash);
11376: }
11377: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11378: }
11379: # ------------------------------------------ fourth, look in resource metadata
11380:
11381: my $what = $spacequalifierrest;
11382: $what=~s/\./\_/;
11383: my $filename;
11384: if (!$symbparm) { $symbparm=&symbread(); }
11385: if ($symbparm) {
11386: $filename=(&decode_symb($symbparm))[2];
11387: } else {
11388: $filename=$env{'request.filename'};
11389: }
11390: my $metadata=&metadata($filename,$what);
11391: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11392: $metadata=&metadata($filename,'parameter_'.$what);
11393: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11394:
11395: # ----------------------------------------------- fifth, look in rest of course
11396: if ($symbparm && defined($courseid) &&
11397: $courseid eq $env{'request.course.id'}) {
11398: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11399: $env{'course.'.$courseid.'.domain'},
11400: 'course',$mapp,\$recursed,\@recurseup,
11401: $courseid,'.',$spacequalifierrest,
11402: ([$courselevelm,'map' ],
11403: [$courseleveli,'map' ],
11404: [$courselevel, 'course']));
11405: if (defined($coursereply)) { return &get_reply($coursereply); }
11406: }
11407: # ------------------------------------------------------------------ Cascade up
11408: unless ($space eq '0') {
11409: my @parts=split(/_/,$space);
11410: my $id=pop(@parts);
11411: my $part=join('_',@parts);
11412: if ($part eq '') { $part='0'; }
11413: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11414: $symbparm,$udom,$uname,$section,1);
11415: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11416: }
11417: if ($recurse) { return undef; }
11418: my $pack_def=&packages_tab_default($filename,$varname);
11419: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11420: # ---------------------------------------------------- Any other user namespace
11421: } elsif ($realm eq 'environment') {
11422: # ----------------------------------------------------------------- environment
11423: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11424: return $env{'environment.'.$spacequalifierrest};
11425: } else {
11426: if ($uname eq 'anonymous' && $udom eq '') {
11427: return '';
11428: }
11429: my %returnhash=&userenvironment($udom,$uname,
11430: $spacequalifierrest);
11431: return $returnhash{$spacequalifierrest};
11432: }
11433: } elsif ($realm eq 'system') {
11434: # ----------------------------------------------------------------- system.time
11435: if ($space eq 'time') {
11436: return time;
11437: }
11438: } elsif ($realm eq 'server') {
11439: # ----------------------------------------------------------------- system.time
11440: if ($space eq 'name') {
11441: return $ENV{'SERVER_NAME'};
11442: }
11443: }
11444: return '';
11445: }
11446:
11447: sub get_reply {
11448: my ($reply_value) = @_;
11449: if (ref($reply_value) eq 'ARRAY') {
11450: if (wantarray) {
11451: return @$reply_value;
11452: }
11453: return $reply_value->[0];
11454: } else {
11455: return $reply_value;
11456: }
11457: }
11458:
11459: sub check_group_parms {
11460: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11461: $recursed,$recurseupref) = @_;
11462: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11463: [$what,'course']);
11464: my $coursereply;
11465: foreach my $group (@{$groups}) {
11466: my @groupitems = ();
11467: foreach my $level (@levels) {
11468: my $item = $courseid.'.['.$group.'].'.$level->[0];
11469: push(@groupitems,[$item,$level->[1]]);
11470: }
11471: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11472: $env{'course.'.$courseid.'.domain'},
11473: 'course',$mapp,$recursed,$recurseupref,
11474: $courseid,'.['.$group.'].',$what,
11475: @groupitems);
11476: last if (defined($coursereply));
11477: }
11478: return $coursereply;
11479: }
11480:
11481: sub get_map_hierarchy {
11482: my ($mapname,$courseid) = @_;
11483: my @recurseup = ();
11484: if ($mapname) {
11485: if (($cachedmapkey eq $courseid) &&
11486: (abs($cachedmaptime-time)<5)) {
11487: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11488: return @{$cachedmaps{$mapname}};
11489: }
11490: }
11491: my $navmap = Apache::lonnavmaps::navmap->new();
11492: if (ref($navmap)) {
11493: @recurseup = $navmap->recurseup_maps($mapname);
11494: undef($navmap);
11495: $cachedmaps{$mapname} = \@recurseup;
11496: $cachedmaptime=time;
11497: $cachedmapkey=$courseid;
11498: }
11499: }
11500: return @recurseup;
11501: }
11502:
11503: }
11504:
11505: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11506: my ($courseid,@groups) = @_;
11507: @groups = sort(@groups);
11508: return @groups;
11509: }
11510:
11511: sub packages_tab_default {
11512: my ($uri,$varname)=@_;
11513: my (undef,$part,$name)=split(/\./,$varname);
11514:
11515: my (@extension,@specifics,$do_default);
11516: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
11517: my ($pack_type,$pack_part)=split(/_/,$package,2);
11518: if ($pack_type eq 'default') {
11519: $do_default=1;
11520: } elsif ($pack_type eq 'extension') {
11521: push(@extension,[$package,$pack_type,$pack_part]);
11522: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11523: # only look at packages defaults for packages that this id is
11524: push(@specifics,[$package,$pack_type,$pack_part]);
11525: }
11526: }
11527: # first look for a package that matches the requested part id
11528: foreach my $package (@specifics) {
11529: my (undef,$pack_type,$pack_part)=@{$package};
11530: next if ($pack_part ne $part);
11531: if (defined($packagetab{"$pack_type&$name&default"})) {
11532: return $packagetab{"$pack_type&$name&default"};
11533: }
11534: }
11535: # look for any possible matching non extension_ package
11536: foreach my $package (@specifics) {
11537: my (undef,$pack_type,$pack_part)=@{$package};
11538: if (defined($packagetab{"$pack_type&$name&default"})) {
11539: return $packagetab{"$pack_type&$name&default"};
11540: }
11541: if ($pack_type eq 'part') { $pack_part='0'; }
11542: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11543: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11544: }
11545: }
11546: # look for any posible extension_ match
11547: foreach my $package (@extension) {
11548: my ($package,$pack_type)=@{$package};
11549: if (defined($packagetab{"$pack_type&$name&default"})) {
11550: return $packagetab{"$pack_type&$name&default"};
11551: }
11552: if (defined($packagetab{$package."&$name&default"})) {
11553: return $packagetab{$package."&$name&default"};
11554: }
11555: }
11556: # look for a global default setting
11557: if ($do_default && defined($packagetab{"default&$name&default"})) {
11558: return $packagetab{"default&$name&default"};
11559: }
11560: return undef;
11561: }
11562:
11563: sub add_prefix_and_part {
11564: my ($prefix,$part)=@_;
11565: my $keyroot;
11566: if (defined($prefix) && $prefix !~ /^__/) {
11567: # prefix that has a part already
11568: $keyroot=$prefix;
11569: } elsif (defined($prefix)) {
11570: # prefix that is missing a part
11571: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11572: } else {
11573: # no prefix at all
11574: if (defined($part)) { $keyroot='_'.$part; }
11575: }
11576: return $keyroot;
11577: }
11578:
11579: # ---------------------------------------------------------------- Get metadata
11580:
11581: my %metaentry;
11582: my %importedpartids;
11583: sub metadata {
11584: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
11585: $uri=&declutter($uri);
11586: # if it is a non metadata possible uri return quickly
11587: if (($uri eq '') ||
11588: (($uri =~ m|^/*adm/|) &&
11589: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11590: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11591: return undef;
11592: }
11593: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11594: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11595: return undef;
11596: }
11597: my $filename=$uri;
11598: $uri=~s/\.meta$//;
11599: #
11600: # Is the metadata already cached?
11601: # Look at timestamp of caching
11602: # Everything is cached by the main uri, libraries are never directly cached
11603: #
11604: if (!defined($liburi)) {
11605: my ($result,$cached)=&is_cached_new('meta',$uri);
11606: if (defined($cached)) { return $result->{':'.$what}; }
11607: }
11608: {
11609: # Imported parts would go here
11610: my %importedids=();
11611: my @origfileimportpartids=();
11612: my $importedparts=0;
11613: #
11614: # Is this a recursive call for a library?
11615: #
11616: # if (! exists($metacache{$uri})) {
11617: # $metacache{$uri}={};
11618: # }
11619: my $cachetime = 60*60;
11620: if ($liburi) {
11621: $liburi=&declutter($liburi);
11622: $filename=$liburi;
11623: } else {
11624: &devalidate_cache_new('meta',$uri);
11625: undef(%metaentry);
11626: }
11627: my %metathesekeys=();
11628: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
11629: my $metastring;
11630: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
11631: my $which = &hreflocation('','/'.($liburi || $uri));
11632: $metastring =
11633: &Apache::lonnet::ssi_body($which,
11634: ('grade_target' => 'meta'));
11635: $cachetime = 1; # only want this cached in the child not long term
11636: } elsif (($uri !~ m -^(editupload)/-) &&
11637: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
11638: my $file=&filelocation('',&clutter($filename));
11639: #push(@{$metaentry{$uri.'.file'}},$file);
11640: $metastring=&getfile($file);
11641: }
11642: my $parser=HTML::LCParser->new(\$metastring);
11643: my $token;
11644: undef %metathesekeys;
11645: while ($token=$parser->get_token) {
11646: if ($token->[0] eq 'S') {
11647: if (defined($token->[2]->{'package'})) {
11648: #
11649: # This is a package - get package info
11650: #
11651: my $package=$token->[2]->{'package'};
11652: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11653: if (defined($token->[2]->{'id'})) {
11654: $keyroot.='_'.$token->[2]->{'id'};
11655: }
11656: if ($metaentry{':packages'}) {
11657: $metaentry{':packages'}.=','.$package.$keyroot;
11658: } else {
11659: $metaentry{':packages'}=$package.$keyroot;
11660: }
11661: foreach my $pack_entry (keys(%packagetab)) {
11662: my $part=$keyroot;
11663: $part=~s/^\_//;
11664: if ($pack_entry=~/^\Q$package\E\&/ ||
11665: $pack_entry=~/^\Q$package\E_0\&/) {
11666: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
11667: # ignore package.tab specified default values
11668: # here &package_tab_default() will fetch those
11669: if ($subp eq 'default') { next; }
11670: my $value=$packagetab{$pack_entry};
11671: my $unikey;
11672: if ($pack =~ /_0$/) {
11673: $unikey='parameter_0_'.$name;
11674: $part=0;
11675: } else {
11676: $unikey='parameter'.$keyroot.'_'.$name;
11677: }
11678: if ($subp eq 'display') {
11679: $value.=' [Part: '.$part.']';
11680: }
11681: $metaentry{':'.$unikey.'.part'}=$part;
11682: $metathesekeys{$unikey}=1;
11683: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11684: $metaentry{':'.$unikey.'.'.$subp}=$value;
11685: }
11686: if (defined($metaentry{':'.$unikey.'.default'})) {
11687: $metaentry{':'.$unikey}=
11688: $metaentry{':'.$unikey.'.default'};
11689: }
11690: }
11691: }
11692: } else {
11693: #
11694: # This is not a package - some other kind of start tag
11695: #
11696: my $entry=$token->[1];
11697: my $unikey='';
11698:
11699: if ($entry eq 'import') {
11700: #
11701: # Importing a library here
11702: #
11703: my $location=$parser->get_text('/import');
11704: my $dir=$filename;
11705: $dir=~s|[^/]*$||;
11706: $location=&filelocation($dir,$location);
11707:
11708: my $importmode=$token->[2]->{'importmode'};
11709: if ($importmode eq 'problem') {
11710: # Import as problem/response
11711: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11712: } elsif ($importmode eq 'part') {
11713: # Import as part(s)
11714: $importedparts=1;
11715: # We need to get the original file and the imported file to get the part order correct
11716: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
11717: # Load and inspect original file
11718: if ($#origfileimportpartids<0) {
11719: undef(%importedpartids);
11720: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
11721: my $origfile=&getfile($origfilelocation);
11722: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11723: }
11724:
11725: # Load and inspect imported file
11726: my $impfile=&getfile($location);
11727: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11728: if ($#impfilepartids>=0) {
11729: # This problem had parts
11730: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
11731: } else {
11732: # Importing by turning a single problem into a problem part
11733: # It gets the import-tags ID as part-ID
11734: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
11735: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
11736: }
11737: } else {
11738: # Normal import
11739: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11740: if (defined($token->[2]->{'id'})) {
11741: $unikey.='_'.$token->[2]->{'id'};
11742: }
11743: }
11744:
11745: if ($depthcount<20) {
11746: my $metadata =
11747: &metadata($uri,'keys', $location,$unikey,
11748: $depthcount+1);
11749: foreach my $meta (split(',',$metadata)) {
11750: $metaentry{':'.$meta}=$metaentry{':'.$meta};
11751: $metathesekeys{$meta}=1;
11752: }
11753:
11754: }
11755: } else {
11756: #
11757: # Not importing, some other kind of non-package, non-library start tag
11758: #
11759: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
11760: if (defined($token->[2]->{'id'})) {
11761: $unikey.='_'.$token->[2]->{'id'};
11762: }
11763: if (defined($token->[2]->{'name'})) {
11764: $unikey.='_'.$token->[2]->{'name'};
11765: }
11766: $metathesekeys{$unikey}=1;
11767: foreach my $param (@{$token->[3]}) {
11768: $metaentry{':'.$unikey.'.'.$param} =
11769: $token->[2]->{$param};
11770: }
11771: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
11772: my $default=$metaentry{':'.$unikey.'.default'};
11773: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
11774: # only ws inside the tag, and not in default, so use default
11775: # as value
11776: $metaentry{':'.$unikey}=$default;
11777: } elsif ( $internaltext =~ /\S/ ) {
11778: # something interesting inside the tag
11779: $metaentry{':'.$unikey}=$internaltext;
11780: } else {
11781: # no interesting values, don't set a default
11782: }
11783: # end of not-a-package not-a-library import
11784: }
11785: # end of not-a-package start tag
11786: }
11787: # the next is the end of "start tag"
11788: }
11789: }
11790: my ($extension) = ($uri =~ /\.(\w+)$/);
11791: $extension = lc($extension);
11792: if ($extension eq 'htm') { $extension='html'; }
11793:
11794: foreach my $key (keys(%packagetab)) {
11795: #no specific packages #how's our extension
11796: if ($key!~/^extension_\Q$extension\E&/) { next; }
11797: &metadata_create_package_def($uri,$key,'extension_'.$extension,
11798: \%metathesekeys);
11799: }
11800:
11801: if (!exists($metaentry{':packages'})
11802: || $packagetab{"import_defaults&extension_$extension"}) {
11803: foreach my $key (keys(%packagetab)) {
11804: #no specific packages well let's get default then
11805: if ($key!~/^default&/) { next; }
11806: &metadata_create_package_def($uri,$key,'default',
11807: \%metathesekeys);
11808: }
11809: }
11810: # are there custom rights to evaluate
11811: if ($metaentry{':copyright'} eq 'custom') {
11812:
11813: #
11814: # Importing a rights file here
11815: #
11816: unless ($depthcount) {
11817: my $location=$metaentry{':customdistributionfile'};
11818: my $dir=$filename;
11819: $dir=~s|[^/]*$||;
11820: $location=&filelocation($dir,$location);
11821: my $rights_metadata =
11822: &metadata($uri,'keys',$location,'_rights',
11823: $depthcount+1);
11824: foreach my $rights (split(',',$rights_metadata)) {
11825: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
11826: $metathesekeys{$rights}=1;
11827: }
11828: }
11829: }
11830: # uniqifiy package listing
11831: my %seen;
11832: my @uniq_packages =
11833: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
11834: $metaentry{':packages'} = join(',',@uniq_packages);
11835:
11836: if ($importedparts) {
11837: # We had imported parts and need to rebuild partorder
11838: $metaentry{':partorder'}='';
11839: $metathesekeys{'partorder'}=1;
11840: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
11841: if ($origfileimportpartids[$index] eq 'part') {
11842: # original part, part of the problem
11843: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
11844: } else {
11845: # we have imported parts at this position
11846: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
11847: }
11848: }
11849: $metaentry{':partorder'}=~s/^\,//;
11850: }
11851:
11852: $metaentry{':keys'} = join(',',keys(%metathesekeys));
11853: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
11854: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
11855: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
11856: # this is the end of "was not already recently cached
11857: }
11858: return $metaentry{':'.$what};
11859: }
11860:
11861: sub metadata_create_package_def {
11862: my ($uri,$key,$package,$metathesekeys)=@_;
11863: my ($pack,$name,$subp)=split(/\&/,$key);
11864: if ($subp eq 'default') { next; }
11865:
11866: if (defined($metaentry{':packages'})) {
11867: $metaentry{':packages'}.=','.$package;
11868: } else {
11869: $metaentry{':packages'}=$package;
11870: }
11871: my $value=$packagetab{$key};
11872: my $unikey;
11873: $unikey='parameter_0_'.$name;
11874: $metaentry{':'.$unikey.'.part'}=0;
11875: $$metathesekeys{$unikey}=1;
11876: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11877: $metaentry{':'.$unikey.'.'.$subp}=$value;
11878: }
11879: if (defined($metaentry{':'.$unikey.'.default'})) {
11880: $metaentry{':'.$unikey}=
11881: $metaentry{':'.$unikey.'.default'};
11882: }
11883: }
11884:
11885: sub metadata_generate_part0 {
11886: my ($metadata,$metacache,$uri) = @_;
11887: my %allnames;
11888: foreach my $metakey (keys(%$metadata)) {
11889: if ($metakey=~/^parameter\_(.*)/) {
11890: my $part=$$metacache{':'.$metakey.'.part'};
11891: my $name=$$metacache{':'.$metakey.'.name'};
11892: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
11893: $allnames{$name}=$part;
11894: }
11895: }
11896: }
11897: foreach my $name (keys(%allnames)) {
11898: $$metadata{"parameter_0_$name"}=1;
11899: my $key=":parameter_0_$name";
11900: $$metacache{"$key.part"}='0';
11901: $$metacache{"$key.name"}=$name;
11902: $$metacache{"$key.type"}=$$metacache{':parameter_'.
11903: $allnames{$name}.'_'.$name.
11904: '.type'};
11905: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
11906: '.display'};
11907: my $expr='[Part: '.$allnames{$name}.']';
11908: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
11909: $$metacache{"$key.display"}=$olddis;
11910: }
11911: }
11912:
11913: # ------------------------------------------------------ Devalidate title cache
11914:
11915: sub devalidate_title_cache {
11916: my ($url)=@_;
11917: if (!$env{'request.course.id'}) { return; }
11918: my $symb=&symbread($url);
11919: if (!$symb) { return; }
11920: my $key=$env{'request.course.id'}."\0".$symb;
11921: &devalidate_cache_new('title',$key);
11922: }
11923:
11924: # ------------------------------------------------- Get the title of a course
11925:
11926: sub current_course_title {
11927: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
11928: }
11929: # ------------------------------------------------- Get the title of a resource
11930:
11931: sub gettitle {
11932: my $urlsymb=shift;
11933: my $symb=&symbread($urlsymb);
11934: if ($symb) {
11935: my $key=$env{'request.course.id'}."\0".$symb;
11936: my ($result,$cached)=&is_cached_new('title',$key);
11937: if (defined($cached)) {
11938: return $result;
11939: }
11940: my ($map,$resid,$url)=&decode_symb($symb);
11941: my $title='';
11942: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
11943: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
11944: } else {
11945: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11946: &GDBM_READER(),0640)) {
11947: my $mapid=$bighash{'map_pc_'.&clutter($map)};
11948: $title=$bighash{'title_'.$mapid.'.'.$resid};
11949: untie(%bighash);
11950: }
11951: }
11952: $title=~s/\&colon\;/\:/gs;
11953: if ($title) {
11954: # Remember both $symb and $title for dynamic metadata
11955: $accesshash{$symb.'___crstitle'}=$title;
11956: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
11957: # Cache this title and then return it
11958: return &do_cache_new('title',$key,$title,600);
11959: }
11960: $urlsymb=$url;
11961: }
11962: my $title=&metadata($urlsymb,'title');
11963: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
11964: return $title;
11965: }
11966:
11967: sub get_slot {
11968: my ($which,$cnum,$cdom)=@_;
11969: if (!$cnum || !$cdom) {
11970: (undef,my $courseid)=&whichuser();
11971: $cdom=$env{'course.'.$courseid.'.domain'};
11972: $cnum=$env{'course.'.$courseid.'.num'};
11973: }
11974: my $key=join("\0",'slots',$cdom,$cnum,$which);
11975: my %slotinfo;
11976: if (exists($remembered{$key})) {
11977: $slotinfo{$which} = $remembered{$key};
11978: } else {
11979: %slotinfo=&get('slots',[$which],$cdom,$cnum);
11980: &Apache::lonhomework::showhash(%slotinfo);
11981: my ($tmp)=keys(%slotinfo);
11982: if ($tmp=~/^error:/) { return (); }
11983: $remembered{$key} = $slotinfo{$which};
11984: }
11985: if (ref($slotinfo{$which}) eq 'HASH') {
11986: return %{$slotinfo{$which}};
11987: }
11988: return $slotinfo{$which};
11989: }
11990:
11991: sub get_reservable_slots {
11992: my ($cnum,$cdom,$uname,$udom) = @_;
11993: my $now = time;
11994: my $reservable_info;
11995: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
11996: if (exists($remembered{$key})) {
11997: $reservable_info = $remembered{$key};
11998: } else {
11999: my %resv;
12000: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12001: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12002: $reservable_info = \%resv;
12003: $remembered{$key} = $reservable_info;
12004: }
12005: return $reservable_info;
12006: }
12007:
12008: sub get_course_slots {
12009: my ($cnum,$cdom) = @_;
12010: my $hashid=$cnum.':'.$cdom;
12011: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12012: if (defined($cached)) {
12013: if (ref($result) eq 'HASH') {
12014: return %{$result};
12015: }
12016: } else {
12017: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12018: my ($tmp) = keys(%slots);
12019: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12020: &do_cache_new('allslots',$hashid,\%slots,600);
12021: return %slots;
12022: }
12023: }
12024: return;
12025: }
12026:
12027: sub devalidate_slots_cache {
12028: my ($cnum,$cdom)=@_;
12029: my $hashid=$cnum.':'.$cdom;
12030: &devalidate_cache_new('allslots',$hashid);
12031: }
12032:
12033: sub get_coursechange {
12034: my ($cdom,$cnum) = @_;
12035: if ($cdom eq '' || $cnum eq '') {
12036: return unless ($env{'request.course.id'});
12037: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12038: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12039: }
12040: my $hashid=$cdom.'_'.$cnum;
12041: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12042: if ((defined($cached)) && ($change ne '')) {
12043: return $change;
12044: } else {
12045: my %crshash;
12046: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12047: if ($crshash{'internal.contentchange'} eq '') {
12048: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12049: if ($change eq '') {
12050: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12051: $change = $crshash{'internal.created'};
12052: }
12053: } else {
12054: $change = $crshash{'internal.contentchange'};
12055: }
12056: my $cachetime = 600;
12057: &do_cache_new('crschange',$hashid,$change,$cachetime);
12058: }
12059: return $change;
12060: }
12061:
12062: sub devalidate_coursechange_cache {
12063: my ($cnum,$cdom)=@_;
12064: my $hashid=$cnum.':'.$cdom;
12065: &devalidate_cache_new('crschange',$hashid);
12066: }
12067:
12068: # ------------------------------------------------- Update symbolic store links
12069:
12070: sub symblist {
12071: my ($mapname,%newhash)=@_;
12072: $mapname=&deversion(&declutter($mapname));
12073: my %hash;
12074: if (($env{'request.course.fn'}) && (%newhash)) {
12075: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12076: &GDBM_WRCREAT(),0640)) {
12077: foreach my $url (keys(%newhash)) {
12078: next if ($url eq 'last_known'
12079: && $env{'form.no_update_last_known'});
12080: $hash{declutter($url)}=&encode_symb($mapname,
12081: $newhash{$url}->[1],
12082: $newhash{$url}->[0]);
12083: }
12084: if (untie(%hash)) {
12085: return 'ok';
12086: }
12087: }
12088: }
12089: return 'error';
12090: }
12091:
12092: # --------------------------------------------------------------- Verify a symb
12093:
12094: sub symbverify {
12095: my ($symb,$thisurl,$encstate)=@_;
12096: my $thisfn=$thisurl;
12097: $thisfn=&declutter($thisfn);
12098: # direct jump to resource in page or to a sequence - will construct own symbs
12099: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
12100: # check URL part
12101: my ($map,$resid,$url)=&decode_symb($symb);
12102:
12103: unless ($url eq $thisfn) { return 0; }
12104:
12105: $symb=&symbclean($symb);
12106: $thisurl=&deversion($thisurl);
12107: $thisfn=&deversion($thisfn);
12108:
12109: my %bighash;
12110: my $okay=0;
12111:
12112: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12113: &GDBM_READER(),0640)) {
12114: my $noclutter;
12115: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
12116: $thisurl =~ s/\?.+$//;
12117: if ($map =~ m{^uploaded/.+\.page$}) {
12118: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
12119: $thisurl =~ s{^\Qhttp://https://\E}{https://};
12120: $noclutter = 1;
12121: }
12122: }
12123: my $ids;
12124: if ($noclutter) {
12125: $ids=$bighash{'ids_'.$thisurl};
12126: } else {
12127: $ids=$bighash{'ids_'.&clutter($thisurl)};
12128: }
12129: unless ($ids) {
12130: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
12131: $ids=$bighash{$idkey};
12132: }
12133: if ($ids) {
12134: # ------------------------------------------------------------------- Has ID(s)
12135: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
12136: $symb =~ s/\?.+$//;
12137: }
12138: foreach my $id (split(/\,/,$ids)) {
12139: my ($mapid,$resid)=split(/\./,$id);
12140: if (
12141: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
12142: eq $symb) {
12143: if (ref($encstate)) {
12144: $$encstate = $bighash{'encrypted_'.$id};
12145: }
12146: if (($env{'request.role.adv'}) ||
12147: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
12148: ($thisurl eq '/adm/navmaps')) {
12149: $okay=1;
12150: last;
12151: }
12152: }
12153: }
12154: }
12155: untie(%bighash);
12156: }
12157: return $okay;
12158: }
12159:
12160: # --------------------------------------------------------------- Clean-up symb
12161:
12162: sub symbclean {
12163: my $symb=shift;
12164: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12165: # remove version from map
12166: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
12167:
12168: # remove version from URL
12169: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12170:
12171: # remove wrapper
12172:
12173: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12174: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12175: return $symb;
12176: }
12177:
12178: # ---------------------------------------------- Split symb to find map and url
12179:
12180: sub encode_symb {
12181: my ($map,$resid,$url)=@_;
12182: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12183: }
12184:
12185: sub decode_symb {
12186: my $symb=shift;
12187: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12188: my ($map,$resid,$url)=split(/___/,$symb);
12189: return (&fixversion($map),$resid,&fixversion($url));
12190: }
12191:
12192: sub fixversion {
12193: my $fn=shift;
12194: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12195: my %bighash;
12196: my $uri=&clutter($fn);
12197: my $key=$env{'request.course.id'}.'_'.$uri;
12198: # is this cached?
12199: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12200: if (defined($cached)) { return $result; }
12201: # unfortunately not cached, or expired
12202: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12203: &GDBM_READER(),0640)) {
12204: if ($bighash{'version_'.$uri}) {
12205: my $version=$bighash{'version_'.$uri};
12206: unless (($version eq 'mostrecent') ||
12207: ($version==&getversion($uri))) {
12208: $uri=~s/\.(\w+)$/\.$version\.$1/;
12209: }
12210: }
12211: untie %bighash;
12212: }
12213: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12214: }
12215:
12216: sub deversion {
12217: my $url=shift;
12218: $url=~s/\.\d+\.(\w+)$/\.$1/;
12219: return $url;
12220: }
12221:
12222: # ------------------------------------------------------ Return symb list entry
12223:
12224: sub symbread {
12225: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12226: my $cache_str='request.symbread.cached.'.$thisfn;
12227: if (defined($env{$cache_str})) {
12228: if ($ignorecachednull) {
12229: return $env{$cache_str} unless ($env{$cache_str} eq '');
12230: } else {
12231: return $env{$cache_str};
12232: }
12233: }
12234: # no filename provided? try from environment
12235: unless ($thisfn) {
12236: if ($env{'request.symb'}) {
12237: return $env{$cache_str}=&symbclean($env{'request.symb'});
12238: }
12239: $thisfn=$env{'request.filename'};
12240: }
12241: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12242: # is that filename actually a symb? Verify, clean, and return
12243: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12244: if (&symbverify($thisfn,$1)) {
12245: return $env{$cache_str}=&symbclean($thisfn);
12246: }
12247: }
12248: $thisfn=declutter($thisfn);
12249: my %hash;
12250: my %bighash;
12251: my $syval='';
12252: if (($env{'request.course.fn'}) && ($thisfn)) {
12253: my $targetfn = $thisfn;
12254: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12255: $targetfn = 'adm/wrapper/'.$thisfn;
12256: }
12257: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12258: $targetfn=$1;
12259: }
12260: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12261: &GDBM_READER(),0640)) {
12262: $syval=$hash{$targetfn};
12263: untie(%hash);
12264: }
12265: # ---------------------------------------------------------- There was an entry
12266: if ($syval) {
12267: #unless ($syval=~/\_\d+$/) {
12268: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12269: #&appenv({'request.ambiguous' => $thisfn});
12270: #return $env{$cache_str}='';
12271: #}
12272: #$syval.=$1;
12273: #}
12274: } else {
12275: # ------------------------------------------------------- Was not in symb table
12276: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12277: &GDBM_READER(),0640)) {
12278: # ---------------------------------------------- Get ID(s) for current resource
12279: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12280: unless ($ids) {
12281: $ids=$bighash{'ids_/'.$thisfn};
12282: }
12283: unless ($ids) {
12284: # alias?
12285: $ids=$bighash{'mapalias_'.$thisfn};
12286: }
12287: if ($ids) {
12288: # ------------------------------------------------------------------- Has ID(s)
12289: my @possibilities=split(/\,/,$ids);
12290: if ($#possibilities==0) {
12291: # ----------------------------------------------- There is only one possibility
12292: my ($mapid,$resid)=split(/\./,$ids);
12293: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12294: $resid,$thisfn);
12295: if (ref($possibles) eq 'HASH') {
12296: $possibles->{$syval} = 1;
12297: }
12298: if ($checkforblock) {
12299: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12300: if (@blockers) {
12301: $syval = '';
12302: return;
12303: }
12304: }
12305: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12306: # ------------------------------------------ There is more than one possibility
12307: my $realpossible=0;
12308: foreach my $id (@possibilities) {
12309: my $file=$bighash{'src_'.$id};
12310: my $canaccess;
12311: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12312: $canaccess = 1;
12313: } else {
12314: $canaccess = &allowed('bre',$file);
12315: }
12316: if ($canaccess) {
12317: my ($mapid,$resid)=split(/\./,$id);
12318: if ($bighash{'map_type_'.$mapid} ne 'page') {
12319: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12320: $resid,$thisfn);
12321: if (ref($possibles) eq 'HASH') {
12322: $possibles->{$syval} = 1;
12323: }
12324: if ($checkforblock) {
12325: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12326: unless (@blockers > 0) {
12327: $syval = $poss_syval;
12328: $realpossible++;
12329: }
12330: } else {
12331: $syval = $poss_syval;
12332: $realpossible++;
12333: }
12334: }
12335: }
12336: }
12337: if ($realpossible!=1) { $syval=''; }
12338: } else {
12339: $syval='';
12340: }
12341: }
12342: untie(%bighash);
12343: }
12344: }
12345: if ($syval) {
12346: return $env{$cache_str}=$syval;
12347: }
12348: }
12349: &appenv({'request.ambiguous' => $thisfn});
12350: return $env{$cache_str}='';
12351: }
12352:
12353: # ---------------------------------------------------------- Return random seed
12354:
12355: sub numval {
12356: my $txt=shift;
12357: $txt=~tr/A-J/0-9/;
12358: $txt=~tr/a-j/0-9/;
12359: $txt=~tr/K-T/0-9/;
12360: $txt=~tr/k-t/0-9/;
12361: $txt=~tr/U-Z/0-5/;
12362: $txt=~tr/u-z/0-5/;
12363: $txt=~s/\D//g;
12364: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12365: return int($txt);
12366: }
12367:
12368: sub numval2 {
12369: my $txt=shift;
12370: $txt=~tr/A-J/0-9/;
12371: $txt=~tr/a-j/0-9/;
12372: $txt=~tr/K-T/0-9/;
12373: $txt=~tr/k-t/0-9/;
12374: $txt=~tr/U-Z/0-5/;
12375: $txt=~tr/u-z/0-5/;
12376: $txt=~s/\D//g;
12377: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12378: my $total;
12379: foreach my $val (@txts) { $total+=$val; }
12380: if ($_64bit) { if ($total > 2**32) { return -1; } }
12381: return int($total);
12382: }
12383:
12384: sub numval3 {
12385: use integer;
12386: my $txt=shift;
12387: $txt=~tr/A-J/0-9/;
12388: $txt=~tr/a-j/0-9/;
12389: $txt=~tr/K-T/0-9/;
12390: $txt=~tr/k-t/0-9/;
12391: $txt=~tr/U-Z/0-5/;
12392: $txt=~tr/u-z/0-5/;
12393: $txt=~s/\D//g;
12394: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12395: my $total;
12396: foreach my $val (@txts) { $total+=$val; }
12397: if ($_64bit) { $total=(($total<<32)>>32); }
12398: return $total;
12399: }
12400:
12401: sub digest {
12402: my ($data)=@_;
12403: my $digest=&Digest::MD5::md5($data);
12404: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12405: my ($e,$f);
12406: {
12407: use integer;
12408: $e=($a+$b);
12409: $f=($c+$d);
12410: if ($_64bit) {
12411: $e=(($e<<32)>>32);
12412: $f=(($f<<32)>>32);
12413: }
12414: }
12415: if (wantarray) {
12416: return ($e,$f);
12417: } else {
12418: my $g;
12419: {
12420: use integer;
12421: $g=($e+$f);
12422: if ($_64bit) {
12423: $g=(($g<<32)>>32);
12424: }
12425: }
12426: return $g;
12427: }
12428: }
12429:
12430: sub latest_rnd_algorithm_id {
12431: return '64bit5';
12432: }
12433:
12434: sub get_rand_alg {
12435: my ($courseid)=@_;
12436: if (!$courseid) { $courseid=(&whichuser())[1]; }
12437: if ($courseid) {
12438: return $env{"course.$courseid.rndseed"};
12439: }
12440: return &latest_rnd_algorithm_id();
12441: }
12442:
12443: sub validCODE {
12444: my ($CODE)=@_;
12445: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12446: return 0;
12447: }
12448:
12449: sub getCODE {
12450: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12451: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12452: defined($Apache::lonhomework::parsing_a_task) ) &&
12453: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12454: return $Apache::lonhomework::history{'resource.CODE'};
12455: }
12456: return undef;
12457: }
12458: #
12459: # Determines the random seed for a specific context:
12460: #
12461: # parameters:
12462: # symb - in course context the symb for the seed.
12463: # course_id - The course id of the form domain_coursenum.
12464: # domain - Domain for the user.
12465: # course - Course for the user.
12466: # cenv - environment of the course.
12467: #
12468: # NOTE:
12469: # All parameters are picked out of the environment if missing
12470: # or not defined.
12471: # If a symb cannot be determined the current time is used instead.
12472: #
12473: # For a given well defined symb, courside, domain, username,
12474: # and course environment, the seed is reproducible.
12475: #
12476: sub rndseed {
12477: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12478: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12479: if (!defined($symb)) {
12480: unless ($symb=$wsymb) { return time; }
12481: }
12482: if (!defined $courseid) {
12483: $courseid=$wcourseid;
12484: }
12485: if (!defined $domain) { $domain=$wdomain; }
12486: if (!defined $username) { $username=$wusername }
12487:
12488: my $which;
12489: if (defined($cenv->{'rndseed'})) {
12490: $which = $cenv->{'rndseed'};
12491: } else {
12492: $which =&get_rand_alg($courseid);
12493: }
12494: if (defined(&getCODE())) {
12495:
12496: if ($which eq '64bit5') {
12497: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12498: } elsif ($which eq '64bit4') {
12499: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12500: } else {
12501: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12502: }
12503: } elsif ($which eq '64bit5') {
12504: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12505: } elsif ($which eq '64bit4') {
12506: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12507: } elsif ($which eq '64bit3') {
12508: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12509: } elsif ($which eq '64bit2') {
12510: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12511: } elsif ($which eq '64bit') {
12512: return &rndseed_64bit($symb,$courseid,$domain,$username);
12513: }
12514: return &rndseed_32bit($symb,$courseid,$domain,$username);
12515: }
12516:
12517: sub rndseed_32bit {
12518: my ($symb,$courseid,$domain,$username)=@_;
12519: {
12520: use integer;
12521: my $symbchck=unpack("%32C*",$symb) << 27;
12522: my $symbseed=numval($symb) << 22;
12523: my $namechck=unpack("%32C*",$username) << 17;
12524: my $nameseed=numval($username) << 12;
12525: my $domainseed=unpack("%32C*",$domain) << 7;
12526: my $courseseed=unpack("%32C*",$courseid);
12527: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12528: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12529: #&logthis("rndseed :$num:$symb");
12530: if ($_64bit) { $num=(($num<<32)>>32); }
12531: return $num;
12532: }
12533: }
12534:
12535: sub rndseed_64bit {
12536: my ($symb,$courseid,$domain,$username)=@_;
12537: {
12538: use integer;
12539: my $symbchck=unpack("%32S*",$symb) << 21;
12540: my $symbseed=numval($symb) << 10;
12541: my $namechck=unpack("%32S*",$username);
12542:
12543: my $nameseed=numval($username) << 21;
12544: my $domainseed=unpack("%32S*",$domain) << 10;
12545: my $courseseed=unpack("%32S*",$courseid);
12546:
12547: my $num1=$symbchck+$symbseed+$namechck;
12548: my $num2=$nameseed+$domainseed+$courseseed;
12549: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12550: #&logthis("rndseed :$num:$symb");
12551: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12552: return "$num1,$num2";
12553: }
12554: }
12555:
12556: sub rndseed_64bit2 {
12557: my ($symb,$courseid,$domain,$username)=@_;
12558: {
12559: use integer;
12560: # strings need to be an even # of cahracters long, it it is odd the
12561: # last characters gets thrown away
12562: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12563: my $symbseed=numval($symb) << 10;
12564: my $namechck=unpack("%32S*",$username.' ');
12565:
12566: my $nameseed=numval($username) << 21;
12567: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12568: my $courseseed=unpack("%32S*",$courseid.' ');
12569:
12570: my $num1=$symbchck+$symbseed+$namechck;
12571: my $num2=$nameseed+$domainseed+$courseseed;
12572: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12573: #&logthis("rndseed :$num:$symb");
12574: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12575: return "$num1,$num2";
12576: }
12577: }
12578:
12579: sub rndseed_64bit3 {
12580: my ($symb,$courseid,$domain,$username)=@_;
12581: {
12582: use integer;
12583: # strings need to be an even # of cahracters long, it it is odd the
12584: # last characters gets thrown away
12585: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12586: my $symbseed=numval2($symb) << 10;
12587: my $namechck=unpack("%32S*",$username.' ');
12588:
12589: my $nameseed=numval2($username) << 21;
12590: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12591: my $courseseed=unpack("%32S*",$courseid.' ');
12592:
12593: my $num1=$symbchck+$symbseed+$namechck;
12594: my $num2=$nameseed+$domainseed+$courseseed;
12595: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12596: #&logthis("rndseed :$num1:$num2:$_64bit");
12597: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12598:
12599: return "$num1:$num2";
12600: }
12601: }
12602:
12603: sub rndseed_64bit4 {
12604: my ($symb,$courseid,$domain,$username)=@_;
12605: {
12606: use integer;
12607: # strings need to be an even # of cahracters long, it it is odd the
12608: # last characters gets thrown away
12609: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12610: my $symbseed=numval3($symb) << 10;
12611: my $namechck=unpack("%32S*",$username.' ');
12612:
12613: my $nameseed=numval3($username) << 21;
12614: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12615: my $courseseed=unpack("%32S*",$courseid.' ');
12616:
12617: my $num1=$symbchck+$symbseed+$namechck;
12618: my $num2=$nameseed+$domainseed+$courseseed;
12619: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12620: #&logthis("rndseed :$num1:$num2:$_64bit");
12621: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12622:
12623: return "$num1:$num2";
12624: }
12625: }
12626:
12627: sub rndseed_64bit5 {
12628: my ($symb,$courseid,$domain,$username)=@_;
12629: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
12630: return "$num1:$num2";
12631: }
12632:
12633: sub rndseed_CODE_64bit {
12634: my ($symb,$courseid,$domain,$username)=@_;
12635: {
12636: use integer;
12637: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12638: my $symbseed=numval2($symb);
12639: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12640: my $CODEseed=numval(&getCODE());
12641: my $courseseed=unpack("%32S*",$courseid.' ');
12642: my $num1=$symbseed+$CODEchck;
12643: my $num2=$CODEseed+$courseseed+$symbchck;
12644: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
12645: #&logthis("rndseed :$num1:$num2:$symb");
12646: if ($_64bit) { $num1=(($num1<<32)>>32); }
12647: if ($_64bit) { $num2=(($num2<<32)>>32); }
12648: return "$num1:$num2";
12649: }
12650: }
12651:
12652: sub rndseed_CODE_64bit4 {
12653: my ($symb,$courseid,$domain,$username)=@_;
12654: {
12655: use integer;
12656: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12657: my $symbseed=numval3($symb);
12658: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12659: my $CODEseed=numval3(&getCODE());
12660: my $courseseed=unpack("%32S*",$courseid.' ');
12661: my $num1=$symbseed+$CODEchck;
12662: my $num2=$CODEseed+$courseseed+$symbchck;
12663: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
12664: #&logthis("rndseed :$num1:$num2:$symb");
12665: if ($_64bit) { $num1=(($num1<<32)>>32); }
12666: if ($_64bit) { $num2=(($num2<<32)>>32); }
12667: return "$num1:$num2";
12668: }
12669: }
12670:
12671: sub rndseed_CODE_64bit5 {
12672: my ($symb,$courseid,$domain,$username)=@_;
12673: my $code = &getCODE();
12674: my ($num1,$num2)=&digest("$symb,$courseid,$code");
12675: return "$num1:$num2";
12676: }
12677:
12678: sub setup_random_from_rndseed {
12679: my ($rndseed)=@_;
12680: if ($rndseed =~/([,:])/) {
12681: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
12682: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
12683: &Math::Random::random_set_seed_from_phrase($rndseed);
12684: } else {
12685: &Math::Random::random_set_seed($num1,$num2);
12686: }
12687: } else {
12688: &Math::Random::random_set_seed_from_phrase($rndseed);
12689: }
12690: }
12691:
12692: sub latest_receipt_algorithm_id {
12693: return 'receipt3';
12694: }
12695:
12696: sub recunique {
12697: my $fucourseid=shift;
12698: my $unique;
12699: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
12700: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12701: $unique=$env{"course.$fucourseid.internal.encseed"};
12702: } else {
12703: $unique=$perlvar{'lonReceipt'};
12704: }
12705: return unpack("%32C*",$unique);
12706: }
12707:
12708: sub recprefix {
12709: my $fucourseid=shift;
12710: my $prefix;
12711: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
12712: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12713: $prefix=$env{"course.$fucourseid.internal.encpref"};
12714: } else {
12715: $prefix=$perlvar{'lonHostID'};
12716: }
12717: return unpack("%32C*",$prefix);
12718: }
12719:
12720: sub ireceipt {
12721: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
12722:
12723: my $return =&recprefix($fucourseid).'-';
12724:
12725: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
12726: $env{'request.state'} eq 'construct') {
12727: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
12728: return $return;
12729: }
12730:
12731: my $cuname=unpack("%32C*",$funame);
12732: my $cudom=unpack("%32C*",$fudom);
12733: my $cucourseid=unpack("%32C*",$fucourseid);
12734: my $cusymb=unpack("%32C*",$fusymb);
12735: my $cunique=&recunique($fucourseid);
12736: my $cpart=unpack("%32S*",$part);
12737: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
12738:
12739: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
12740:
12741: $return.= ($cunique%$cuname+
12742: $cunique%$cudom+
12743: $cusymb%$cuname+
12744: $cusymb%$cudom+
12745: $cucourseid%$cuname+
12746: $cucourseid%$cudom+
12747: $cpart%$cuname+
12748: $cpart%$cudom);
12749: } else {
12750: $return.= ($cunique%$cuname+
12751: $cunique%$cudom+
12752: $cusymb%$cuname+
12753: $cusymb%$cudom+
12754: $cucourseid%$cuname+
12755: $cucourseid%$cudom);
12756: }
12757: return $return;
12758: }
12759:
12760: sub receipt {
12761: my ($part)=@_;
12762: my ($symb,$courseid,$domain,$name) = &whichuser();
12763: return &ireceipt($name,$domain,$courseid,$symb,$part);
12764: }
12765:
12766: sub whichuser {
12767: my ($passedsymb)=@_;
12768: my ($symb,$courseid,$domain,$name,$publicuser);
12769: if (defined($env{'form.grade_symb'})) {
12770: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
12771: my $allowed=&allowed('vgr',$tmp_courseid);
12772: if (!$allowed &&
12773: exists($env{'request.course.sec'}) &&
12774: $env{'request.course.sec'} !~ /^\s*$/) {
12775: $allowed=&allowed('vgr',$tmp_courseid.
12776: '/'.$env{'request.course.sec'});
12777: }
12778: if ($allowed) {
12779: ($symb)=&get_env_multiple('form.grade_symb');
12780: $courseid=$tmp_courseid;
12781: ($domain)=&get_env_multiple('form.grade_domain');
12782: ($name)=&get_env_multiple('form.grade_username');
12783: return ($symb,$courseid,$domain,$name,$publicuser);
12784: }
12785: }
12786: if (!$passedsymb) {
12787: $symb=&symbread();
12788: } else {
12789: $symb=$passedsymb;
12790: }
12791: $courseid=$env{'request.course.id'};
12792: $domain=$env{'user.domain'};
12793: $name=$env{'user.name'};
12794: if ($name eq 'public' && $domain eq 'public') {
12795: if (!defined($env{'form.username'})) {
12796: $env{'form.username'}.=time.rand(10000000);
12797: }
12798: $name.=$env{'form.username'};
12799: }
12800: return ($symb,$courseid,$domain,$name,$publicuser);
12801:
12802: }
12803:
12804: # ------------------------------------------------------------ Serves up a file
12805: # returns either the contents of the file or
12806: # -1 if the file doesn't exist
12807: #
12808: # if the target is a file that was uploaded via DOCS,
12809: # a check will be made to see if a current copy exists on the local server,
12810: # if it does this will be served, otherwise a copy will be retrieved from
12811: # the home server for the course and stored in /home/httpd/html/userfiles on
12812: # the local server.
12813:
12814: sub getfile {
12815: my ($file) = @_;
12816: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
12817: &repcopy($file);
12818: return &readfile($file);
12819: }
12820:
12821: sub repcopy_userfile {
12822: my ($file)=@_;
12823: my $londocroot = $perlvar{'lonDocRoot'};
12824: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
12825: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
12826: my ($cdom,$cnum,$filename) =
12827: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
12828: my $uri="/uploaded/$cdom/$cnum/$filename";
12829: if (-e "$file") {
12830: # we already have a local copy, check it out
12831: my @fileinfo = stat($file);
12832: my $rtncode;
12833: my $info;
12834: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
12835: if ($lwpresp ne 'ok') {
12836: # there is no such file anymore, even though we had a local copy
12837: if ($rtncode eq '404') {
12838: unlink($file);
12839: }
12840: return -1;
12841: }
12842: if ($info < $fileinfo[9]) {
12843: # nice, the file we have is up-to-date, just say okay
12844: return 'ok';
12845: } else {
12846: # the file is outdated, get rid of it
12847: unlink($file);
12848: }
12849: }
12850: # one way or the other, at this point, we don't have the file
12851: # construct the correct path for the file
12852: my @parts = ($cdom,$cnum);
12853: if ($filename =~ m|^(.+)/[^/]+$|) {
12854: push @parts, split(/\//,$1);
12855: }
12856: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
12857: foreach my $part (@parts) {
12858: $path .= '/'.$part;
12859: if (!-e $path) {
12860: mkdir($path,0770);
12861: }
12862: }
12863: # now the path exists for sure
12864: # get a user agent
12865: my $transferfile=$file.'.in.transfer';
12866: # FIXME: this should flock
12867: if (-e $transferfile) { return 'ok'; }
12868: my $request;
12869: $uri=~s/^\///;
12870: my $homeserver = &homeserver($cnum,$cdom);
12871: my $protocol = $protocol{$homeserver};
12872: $protocol = 'http' if ($protocol ne 'https');
12873: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
12874: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
12875: # did it work?
12876: if ($response->is_error()) {
12877: unlink($transferfile);
12878: &logthis("Userfile repcopy failed for $uri");
12879: return -1;
12880: }
12881: # worked, rename the transfer file
12882: rename($transferfile,$file);
12883: return 'ok';
12884: }
12885:
12886: sub tokenwrapper {
12887: my $uri=shift;
12888: $uri=~s|^https?\://([^/]+)||;
12889: $uri=~s|^/||;
12890: $env{'user.environment'}=~/\/([^\/]+)\.id/;
12891: my $token=$1;
12892: my (undef,$udom,$uname,$file)=split('/',$uri,4);
12893: if ($udom && $uname && $file) {
12894: $file=~s|(\?\.*)*$||;
12895: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
12896: my $homeserver = &homeserver($uname,$udom);
12897: my $protocol = $protocol{$homeserver};
12898: $protocol = 'http' if ($protocol ne 'https');
12899: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
12900: (($uri=~/\?/)?'&':'?').'token='.$token.
12901: '&tokenissued='.$perlvar{'lonHostID'};
12902: } else {
12903: return '/adm/notfound.html';
12904: }
12905: }
12906:
12907: # call with reqtype HEAD: get last modification time
12908: # call with reqtype GET: get the file contents
12909: # Do not call this with reqtype GET for large files! It loads everything into memory
12910: #
12911: sub getuploaded {
12912: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
12913: $uri=~s/^\///;
12914: my $homeserver = &homeserver($cnum,$cdom);
12915: my $protocol = $protocol{$homeserver};
12916: $protocol = 'http' if ($protocol ne 'https');
12917: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
12918: my $request=new HTTP::Request($reqtype,$uri);
12919: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
12920: $$rtncode = $response->code;
12921: if (! $response->is_success()) {
12922: return 'failed';
12923: }
12924: if ($reqtype eq 'HEAD') {
12925: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
12926: } elsif ($reqtype eq 'GET') {
12927: $$info = $response->content;
12928: }
12929: return 'ok';
12930: }
12931:
12932: sub readfile {
12933: my $file = shift;
12934: if ( (! -e $file ) || ($file eq '') ) { return -1; };
12935: my $fh;
12936: open($fh,"<$file");
12937: my $a='';
12938: while (my $line = <$fh>) { $a .= $line; }
12939: return $a;
12940: }
12941:
12942: sub filelocation {
12943: my ($dir,$file) = @_;
12944: my $location;
12945: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
12946:
12947: if ($file =~ m-^/adm/-) {
12948: $file=~s-^/adm/wrapper/-/-;
12949: $file=~s-^/adm/coursedocs/showdoc/-/-;
12950: }
12951:
12952: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
12953: $location = $file;
12954: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
12955: my ($udom,$uname,$filename)=
12956: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
12957: my $home=&homeserver($uname,$udom);
12958: my $is_me=0;
12959: my @ids=¤t_machine_ids();
12960: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
12961: if ($is_me) {
12962: $location=propath($udom,$uname).'/userfiles/'.$filename;
12963: } else {
12964: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
12965: $udom.'/'.$uname.'/'.$filename;
12966: }
12967: } elsif ($file =~ m-^/adm/-) {
12968: $location = $perlvar{'lonDocRoot'}.'/'.$file;
12969: } else {
12970: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
12971: $file=~s:^/(res|priv)/:/:;
12972: my $space=$1;
12973: if ( !( $file =~ m:^/:) ) {
12974: $location = $dir. '/'.$file;
12975: } else {
12976: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
12977: }
12978: }
12979: $location=~s://+:/:g; # remove duplicate /
12980: while ($location=~m{/\.\./}) {
12981: if ($location =~ m{/[^/]+/\.\./}) {
12982: $location=~ s{/[^/]+/\.\./}{/}g;
12983: } else {
12984: $location=~ s{/\.\./}{/}g;
12985: }
12986: } #remove dir/..
12987: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
12988: return $location;
12989: }
12990:
12991: sub hreflocation {
12992: my ($dir,$file)=@_;
12993: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
12994: $file=filelocation($dir,$file);
12995: } elsif ($file=~m-^/adm/-) {
12996: $file=~s-^/adm/wrapper/-/-;
12997: $file=~s-^/adm/coursedocs/showdoc/-/-;
12998: }
12999: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13000: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13001: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13002: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13003: {/uploaded/$1/$2/}x;
13004: }
13005: if ($file=~ m{^/userfiles/}) {
13006: $file =~ s{^/userfiles/}{/uploaded/};
13007: }
13008: return $file;
13009: }
13010:
13011:
13012:
13013:
13014:
13015: sub current_machine_domains {
13016: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13017: }
13018:
13019: sub machine_domains {
13020: my ($hostname) = @_;
13021: my @domains;
13022: my %hostname = &all_hostnames();
13023: while( my($id, $name) = each(%hostname)) {
13024: # &logthis("-$id-$name-$hostname-");
13025: if ($hostname eq $name) {
13026: push(@domains,&host_domain($id));
13027: }
13028: }
13029: return @domains;
13030: }
13031:
13032: sub current_machine_ids {
13033: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13034: }
13035:
13036: sub machine_ids {
13037: my ($hostname) = @_;
13038: $hostname ||= &hostname($perlvar{'lonHostID'});
13039: my @ids;
13040: my %name_to_host = &all_names();
13041: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13042: return @{ $name_to_host{$hostname} };
13043: }
13044: return;
13045: }
13046:
13047: sub additional_machine_domains {
13048: my @domains;
13049: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
13050: while( my $line = <$fh>) {
13051: $line =~ s/\s//g;
13052: push(@domains,$line);
13053: }
13054: return @domains;
13055: }
13056:
13057: sub default_login_domain {
13058: my $domain = $perlvar{'lonDefDomain'};
13059: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13060: foreach my $posdom (¤t_machine_domains(),
13061: &additional_machine_domains()) {
13062: if (lc($posdom) eq lc($testdomain)) {
13063: $domain=$posdom;
13064: last;
13065: }
13066: }
13067: return $domain;
13068: }
13069:
13070: # ------------------------------------------------------------- Declutters URLs
13071:
13072: sub declutter {
13073: my $thisfn=shift;
13074: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13075: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
13076: $thisfn=~s{^/home/httpd/html}{};
13077: }
13078: $thisfn=~s/^\///;
13079: $thisfn=~s|^adm/wrapper/||;
13080: $thisfn=~s|^adm/coursedocs/showdoc/||;
13081: $thisfn=~s/^res\///;
13082: $thisfn=~s/^priv\///;
13083: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
13084: $thisfn=~s/\?.+$//;
13085: }
13086: return $thisfn;
13087: }
13088:
13089: # ------------------------------------------------------------- Clutter up URLs
13090:
13091: sub clutter {
13092: my $thisfn='/'.&declutter(shift);
13093: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
13094: || $thisfn =~ m{^/adm/(includes|pages)} ) {
13095: $thisfn='/res'.$thisfn;
13096: }
13097: if ($thisfn !~m|^/adm|) {
13098: if ($thisfn =~ m|^/ext/|) {
13099: $thisfn='/adm/wrapper'.$thisfn;
13100: } else {
13101: my ($ext) = ($thisfn =~ /\.(\w+)$/);
13102: my $embstyle=&Apache::loncommon::fileembstyle($ext);
13103: if ($embstyle eq 'ssi'
13104: || ($embstyle eq 'hdn')
13105: || ($embstyle eq 'rat')
13106: || ($embstyle eq 'prv')
13107: || ($embstyle eq 'ign')) {
13108: #do nothing with these
13109: } elsif (($embstyle eq 'img')
13110: || ($embstyle eq 'emb')
13111: || ($embstyle eq 'wrp')) {
13112: $thisfn='/adm/wrapper'.$thisfn;
13113: } elsif ($embstyle eq 'unk'
13114: && $thisfn!~/\.(sequence|page)$/) {
13115: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
13116: } else {
13117: # &logthis("Got a blank emb style");
13118: }
13119: }
13120: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
13121: $thisfn='/adm/wrapper'.$thisfn;
13122: }
13123: return $thisfn;
13124: }
13125:
13126: sub clutter_with_no_wrapper {
13127: my $uri = &clutter(shift);
13128: if ($uri =~ m-^/adm/-) {
13129: $uri =~ s-^/adm/wrapper/-/-;
13130: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
13131: }
13132: return $uri;
13133: }
13134:
13135: sub freeze_escape {
13136: my ($value)=@_;
13137: if (ref($value)) {
13138: $value=&nfreeze($value);
13139: return '__FROZEN__'.&escape($value);
13140: }
13141: return &escape($value);
13142: }
13143:
13144:
13145: sub thaw_unescape {
13146: my ($value)=@_;
13147: if ($value =~ /^__FROZEN__/) {
13148: substr($value,0,10,undef);
13149: $value=&unescape($value);
13150: return &thaw($value);
13151: }
13152: return &unescape($value);
13153: }
13154:
13155: sub correct_line_ends {
13156: my ($result)=@_;
13157: $$result =~s/\r\n/\n/mg;
13158: $$result =~s/\r/\n/mg;
13159: }
13160: # ================================================================ Main Program
13161:
13162: sub goodbye {
13163: &logthis("Starting Shut down");
13164: #not converted to using infrastruture and probably shouldn't be
13165: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13166: #converted
13167: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13168: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13169: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13170: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13171: #1.1 only
13172: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13173: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13174: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13175: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13176: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13177: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13178: &logthis(sprintf("%-20s is %s",'hits',$hits));
13179: &flushcourselogs();
13180: &logthis("Shutting down");
13181: }
13182:
13183: sub get_dns {
13184: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13185: if (!$ignore_cache) {
13186: my ($content,$cached)=
13187: &Apache::lonnet::is_cached_new('dns',$url);
13188: if ($cached) {
13189: &$func($content,$hashref);
13190: return;
13191: }
13192: }
13193:
13194: my %alldns;
13195: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
13196: foreach my $dns (<$config>) {
13197: next if ($dns !~ /^\^(\S*)/x);
13198: my $line = $1;
13199: my ($host,$protocol) = split(/:/,$line);
13200: if ($protocol ne 'https') {
13201: $protocol = 'http';
13202: }
13203: $alldns{$host} = $protocol;
13204: }
13205: while (%alldns) {
13206: my ($dns) = sort { $b cmp $a } keys(%alldns);
13207: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13208: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
13209: delete($alldns{$dns});
13210: next if ($response->is_error());
13211: my @content = split("\n",$response->content);
13212: unless ($nocache) {
13213: &do_cache_new('dns',$url,\@content,30*24*60*60);
13214: }
13215: &$func(\@content,$hashref);
13216: return;
13217: }
13218: close($config);
13219: my $which = (split('/',$url))[3];
13220: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13221: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
13222: my @content = <$config>;
13223: &$func(\@content,$hashref);
13224: return;
13225: }
13226:
13227: # ------------------------------------------------------Get DNS checksums file
13228: sub parse_dns_checksums_tab {
13229: my ($lines,$hashref) = @_;
13230: my $lonhost = $perlvar{'lonHostID'};
13231: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13232: my $loncaparev = &get_server_loncaparev($machine_dom);
13233: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13234: my $webconfdir = '/etc/httpd/conf';
13235: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13236: $webconfdir = '/etc/apache2';
13237: } elsif ($distro =~ /^sles(\d+)$/) {
13238: if ($1 >= 10) {
13239: $webconfdir = '/etc/apache2';
13240: }
13241: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13242: if ($1 >= 10.0) {
13243: $webconfdir = '/etc/apache2';
13244: }
13245: }
13246: my ($release,$timestamp) = split(/\-/,$loncaparev);
13247: my (%chksum,%revnum);
13248: if (ref($lines) eq 'ARRAY') {
13249: chomp(@{$lines});
13250: my $version = shift(@{$lines});
13251: if ($version eq $release) {
13252: foreach my $line (@{$lines}) {
13253: my ($file,$version,$shasum) = split(/,/,$line);
13254: if ($file =~ m{^/etc/httpd/conf}) {
13255: if ($webconfdir eq '/etc/apache2') {
13256: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13257: }
13258: }
13259: $chksum{$file} = $shasum;
13260: $revnum{$file} = $version;
13261: }
13262: if (ref($hashref) eq 'HASH') {
13263: %{$hashref} = (
13264: sums => \%chksum,
13265: versions => \%revnum,
13266: );
13267: }
13268: }
13269: }
13270: return;
13271: }
13272:
13273: sub fetch_dns_checksums {
13274: my %checksums;
13275: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13276: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13277: my ($release,$timestamp) = split(/\-/,$loncaparev);
13278: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13279: \%checksums);
13280: return \%checksums;
13281: }
13282:
13283: # ------------------------------------------------------------ Read domain file
13284: {
13285: my $loaded;
13286: my %domain;
13287:
13288: sub parse_domain_tab {
13289: my ($lines) = @_;
13290: foreach my $line (@$lines) {
13291: next if ($line =~ /^(\#|\s*$ )/x);
13292:
13293: chomp($line);
13294: my ($name,@elements) = split(/:/,$line,9);
13295: my %this_domain;
13296: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13297: 'lang_def', 'city', 'longi', 'lati',
13298: 'primary') {
13299: $this_domain{$field} = shift(@elements);
13300: }
13301: $domain{$name} = \%this_domain;
13302: }
13303: }
13304:
13305: sub reset_domain_info {
13306: undef($loaded);
13307: undef(%domain);
13308: }
13309:
13310: sub load_domain_tab {
13311: my ($ignore_cache,$nocache) = @_;
13312: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13313: my $fh;
13314: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
13315: my @lines = <$fh>;
13316: &parse_domain_tab(\@lines);
13317: }
13318: close($fh);
13319: $loaded = 1;
13320: }
13321:
13322: sub domain {
13323: &load_domain_tab() if (!$loaded);
13324:
13325: my ($name,$what) = @_;
13326: return if ( !exists($domain{$name}) );
13327:
13328: if (!$what) {
13329: return $domain{$name}{'description'};
13330: }
13331: return $domain{$name}{$what};
13332: }
13333:
13334: sub domain_info {
13335: &load_domain_tab() if (!$loaded);
13336: return %domain;
13337: }
13338:
13339: }
13340:
13341:
13342: # ------------------------------------------------------------- Read hosts file
13343: {
13344: my %hostname;
13345: my %hostdom;
13346: my %libserv;
13347: my $loaded;
13348: my %name_to_host;
13349: my %internetdom;
13350: my %LC_dns_serv;
13351:
13352: sub parse_hosts_tab {
13353: my ($file) = @_;
13354: foreach my $configline (@$file) {
13355: next if ($configline =~ /^(\#|\s*$ )/x);
13356: chomp($configline);
13357: if ($configline =~ /^\^/) {
13358: if ($configline =~ /^\^([\w.\-]+)/) {
13359: $LC_dns_serv{$1} = 1;
13360: }
13361: next;
13362: }
13363: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13364: $name=~s/\s//g;
13365: if ($id && $domain && $role && $name) {
13366: $hostname{$id}=$name;
13367: push(@{$name_to_host{$name}}, $id);
13368: $hostdom{$id}=$domain;
13369: if ($role eq 'library') { $libserv{$id}=$name; }
13370: if (defined($protocol)) {
13371: if ($protocol eq 'https') {
13372: $protocol{$id} = $protocol;
13373: } else {
13374: $protocol{$id} = 'http';
13375: }
13376: } else {
13377: $protocol{$id} = 'http';
13378: }
13379: if (defined($intdom)) {
13380: $internetdom{$id} = $intdom;
13381: }
13382: }
13383: }
13384: }
13385:
13386: sub reset_hosts_info {
13387: &purge_remembered();
13388: &reset_domain_info();
13389: &reset_hosts_ip_info();
13390: undef(%internetdom);
13391: undef(%name_to_host);
13392: undef(%hostname);
13393: undef(%hostdom);
13394: undef(%libserv);
13395: undef($loaded);
13396: }
13397:
13398: sub load_hosts_tab {
13399: my ($ignore_cache,$nocache) = @_;
13400: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
13401: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
13402: my @config = <$config>;
13403: &parse_hosts_tab(\@config);
13404: close($config);
13405: $loaded=1;
13406: }
13407:
13408: sub hostname {
13409: &load_hosts_tab() if (!$loaded);
13410:
13411: my ($lonid) = @_;
13412: return $hostname{$lonid};
13413: }
13414:
13415: sub all_hostnames {
13416: &load_hosts_tab() if (!$loaded);
13417:
13418: return %hostname;
13419: }
13420:
13421: sub all_names {
13422: my ($ignore_cache,$nocache) = @_;
13423: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
13424:
13425: return %name_to_host;
13426: }
13427:
13428: sub all_host_domain {
13429: &load_hosts_tab() if (!$loaded);
13430: return %hostdom;
13431: }
13432:
13433: sub all_host_intdom {
13434: &load_hosts_tab() if (!$loaded);
13435: return %internetdom;
13436: }
13437:
13438: sub is_library {
13439: &load_hosts_tab() if (!$loaded);
13440:
13441: return exists($libserv{$_[0]});
13442: }
13443:
13444: sub all_library {
13445: &load_hosts_tab() if (!$loaded);
13446:
13447: return %libserv;
13448: }
13449:
13450: sub unique_library {
13451: #2x reverse removes all hostnames that appear more than once
13452: my %unique = reverse &all_library();
13453: return reverse %unique;
13454: }
13455:
13456: sub get_servers {
13457: &load_hosts_tab() if (!$loaded);
13458:
13459: my ($domain,$type) = @_;
13460: my %possible_hosts = ($type eq 'library') ? %libserv
13461: : %hostname;
13462: my %result;
13463: if (ref($domain) eq 'ARRAY') {
13464: while ( my ($host,$hostname) = each(%possible_hosts)) {
13465: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
13466: $result{$host} = $hostname;
13467: }
13468: }
13469: } else {
13470: while ( my ($host,$hostname) = each(%possible_hosts)) {
13471: if ($hostdom{$host} eq $domain) {
13472: $result{$host} = $hostname;
13473: }
13474: }
13475: }
13476: return %result;
13477: }
13478:
13479: sub get_unique_servers {
13480: my %unique = reverse &get_servers(@_);
13481: return reverse %unique;
13482: }
13483:
13484: sub host_domain {
13485: &load_hosts_tab() if (!$loaded);
13486:
13487: my ($lonid) = @_;
13488: return $hostdom{$lonid};
13489: }
13490:
13491: sub all_domains {
13492: &load_hosts_tab() if (!$loaded);
13493:
13494: my %seen;
13495: my @uniq = grep(!$seen{$_}++, values(%hostdom));
13496: return @uniq;
13497: }
13498:
13499: sub internet_dom {
13500: &load_hosts_tab() if (!$loaded);
13501:
13502: my ($lonid) = @_;
13503: return $internetdom{$lonid};
13504: }
13505:
13506: sub is_LC_dns {
13507: &load_hosts_tab() if (!$loaded);
13508:
13509: my ($hostname) = @_;
13510: return exists($LC_dns_serv{$hostname});
13511: }
13512:
13513: }
13514:
13515: {
13516: my %iphost;
13517: my %name_to_ip;
13518: my %lonid_to_ip;
13519:
13520: sub get_hosts_from_ip {
13521: my ($ip) = @_;
13522: my %iphosts = &get_iphost();
13523: if (ref($iphosts{$ip})) {
13524: return @{$iphosts{$ip}};
13525: }
13526: return;
13527: }
13528:
13529: sub reset_hosts_ip_info {
13530: undef(%iphost);
13531: undef(%name_to_ip);
13532: undef(%lonid_to_ip);
13533: }
13534:
13535: sub get_host_ip {
13536: my ($lonid) = @_;
13537: if (exists($lonid_to_ip{$lonid})) {
13538: return $lonid_to_ip{$lonid};
13539: }
13540: my $name=&hostname($lonid);
13541: my $ip = gethostbyname($name);
13542: return if (!$ip || length($ip) ne 4);
13543: $ip=inet_ntoa($ip);
13544: $name_to_ip{$name} = $ip;
13545: $lonid_to_ip{$lonid} = $ip;
13546: return $ip;
13547: }
13548:
13549: sub get_iphost {
13550: my ($ignore_cache,$nocache) = @_;
13551:
13552: if (!$ignore_cache) {
13553: if (%iphost) {
13554: return %iphost;
13555: }
13556: my ($ip_info,$cached)=
13557: &Apache::lonnet::is_cached_new('iphost','iphost');
13558: if ($cached) {
13559: %iphost = %{$ip_info->[0]};
13560: %name_to_ip = %{$ip_info->[1]};
13561: %lonid_to_ip = %{$ip_info->[2]};
13562: return %iphost;
13563: }
13564: }
13565:
13566: # get yesterday's info for fallback
13567: my %old_name_to_ip;
13568: my ($ip_info,$cached)=
13569: &Apache::lonnet::is_cached_new('iphost','iphost');
13570: if ($cached) {
13571: %old_name_to_ip = %{$ip_info->[1]};
13572: }
13573:
13574: my %name_to_host = &all_names($ignore_cache,$nocache);
13575: foreach my $name (keys(%name_to_host)) {
13576: my $ip;
13577: if (!exists($name_to_ip{$name})) {
13578: $ip = gethostbyname($name);
13579: if (!$ip || length($ip) ne 4) {
13580: if (defined($old_name_to_ip{$name})) {
13581: $ip = $old_name_to_ip{$name};
13582: &logthis("Can't find $name defaulting to old $ip");
13583: } else {
13584: &logthis("Name $name no IP found");
13585: next;
13586: }
13587: } else {
13588: $ip=inet_ntoa($ip);
13589: }
13590: $name_to_ip{$name} = $ip;
13591: } else {
13592: $ip = $name_to_ip{$name};
13593: }
13594: foreach my $id (@{ $name_to_host{$name} }) {
13595: $lonid_to_ip{$id} = $ip;
13596: }
13597: push(@{$iphost{$ip}},@{$name_to_host{$name}});
13598: }
13599: unless ($nocache) {
13600: &do_cache_new('iphost','iphost',
13601: [\%iphost,\%name_to_ip,\%lonid_to_ip],
13602: 48*60*60);
13603: }
13604:
13605: return %iphost;
13606: }
13607:
13608: #
13609: # Given a DNS returns the loncapa host name for that DNS
13610: #
13611: sub host_from_dns {
13612: my ($dns) = @_;
13613: my @hosts;
13614: my $ip;
13615:
13616: if (exists($name_to_ip{$dns})) {
13617: $ip = $name_to_ip{$dns};
13618: }
13619: if (!$ip) {
13620: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
13621: if (length($ip) == 4) {
13622: $ip = &IO::Socket::inet_ntoa($ip);
13623: }
13624: }
13625: if ($ip) {
13626: @hosts = get_hosts_from_ip($ip);
13627: return $hosts[0];
13628: }
13629: return undef;
13630: }
13631:
13632: sub get_internet_names {
13633: my ($lonid) = @_;
13634: return if ($lonid eq '');
13635: my ($idnref,$cached)=
13636: &Apache::lonnet::is_cached_new('internetnames',$lonid);
13637: if ($cached) {
13638: return $idnref;
13639: }
13640: my $ip = &get_host_ip($lonid);
13641: my @hosts = &get_hosts_from_ip($ip);
13642: my %iphost = &get_iphost();
13643: my (@idns,%seen);
13644: foreach my $id (@hosts) {
13645: my $dom = &host_domain($id);
13646: my $prim_id = &domain($dom,'primary');
13647: my $prim_ip = &get_host_ip($prim_id);
13648: next if ($seen{$prim_ip});
13649: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
13650: foreach my $id (@{$iphost{$prim_ip}}) {
13651: my $intdom = &internet_dom($id);
13652: unless (grep(/^\Q$intdom\E$/,@idns)) {
13653: push(@idns,$intdom);
13654: }
13655: }
13656: }
13657: $seen{$prim_ip} = 1;
13658: }
13659: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
13660: }
13661:
13662: }
13663:
13664: sub all_loncaparevs {
13665: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
13666: }
13667:
13668: # ---------------------------------------------------------- Read loncaparev table
13669: {
13670: sub load_loncaparevs {
13671: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
13672: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
13673: while (my $configline=<$config>) {
13674: chomp($configline);
13675: my ($hostid,$loncaparev)=split(/:/,$configline);
13676: $loncaparevs{$hostid}=$loncaparev;
13677: }
13678: close($config);
13679: }
13680: }
13681: }
13682: }
13683:
13684: # ---------------------------------------------------------- Read serverhostID table
13685: {
13686: sub load_serverhomeIDs {
13687: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
13688: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
13689: while (my $configline=<$config>) {
13690: chomp($configline);
13691: my ($name,$id)=split(/:/,$configline);
13692: $serverhomeIDs{$name}=$id;
13693: }
13694: close($config);
13695: }
13696: }
13697: }
13698: }
13699:
13700:
13701: BEGIN {
13702:
13703: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
13704: unless ($readit) {
13705: {
13706: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
13707: %perlvar = (%perlvar,%{$configvars});
13708: }
13709:
13710:
13711: # ------------------------------------------------------ Read spare server file
13712: {
13713: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
13714:
13715: while (my $configline=<$config>) {
13716: chomp($configline);
13717: if ($configline) {
13718: my ($host,$type) = split(':',$configline,2);
13719: if (!defined($type) || $type eq '') { $type = 'default' };
13720: push(@{ $spareid{$type} }, $host);
13721: }
13722: }
13723: close($config);
13724: }
13725: # ------------------------------------------------------------ Read permissions
13726: {
13727: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
13728:
13729: while (my $configline=<$config>) {
13730: chomp($configline);
13731: if ($configline) {
13732: my ($role,$perm)=split(/ /,$configline);
13733: if ($perm ne '') { $pr{$role}=$perm; }
13734: }
13735: }
13736: close($config);
13737: }
13738:
13739: # -------------------------------------------- Read plain texts for permissions
13740: {
13741: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
13742:
13743: while (my $configline=<$config>) {
13744: chomp($configline);
13745: if ($configline) {
13746: my ($short,@plain)=split(/:/,$configline);
13747: %{$prp{$short}} = ();
13748: if (@plain > 0) {
13749: $prp{$short}{'std'} = $plain[0];
13750: for (my $i=1; $i<@plain; $i++) {
13751: $prp{$short}{'alt'.$i} = $plain[$i];
13752: }
13753: }
13754: }
13755: }
13756: close($config);
13757: }
13758:
13759: # ---------------------------------------------------------- Read package table
13760: {
13761: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
13762:
13763: while (my $configline=<$config>) {
13764: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
13765: chomp($configline);
13766: my ($short,$plain)=split(/:/,$configline);
13767: my ($pack,$name)=split(/\&/,$short);
13768: if ($plain ne '') {
13769: $packagetab{$pack.'&'.$name.'&name'}=$name;
13770: $packagetab{$short}=$plain;
13771: }
13772: }
13773: close($config);
13774: }
13775:
13776: # ---------------------------------------------------------- Read loncaparev table
13777:
13778: &load_loncaparevs();
13779:
13780: # ---------------------------------------------------------- Read serverhostID table
13781:
13782: &load_serverhomeIDs();
13783:
13784: # ---------------------------------------------------------- Read releaseslist XML
13785: {
13786: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
13787: if (-e $file) {
13788: my $parser = HTML::LCParser->new($file);
13789: while (my $token = $parser->get_token()) {
13790: if ($token->[0] eq 'S') {
13791: my $item = $token->[1];
13792: my $name = $token->[2]{'name'};
13793: my $value = $token->[2]{'value'};
13794: my $valuematch = $token->[2]{'valuematch'};
13795: my $namematch = $token->[2]{'namematch'};
13796: if ($item eq 'parameter') {
13797: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
13798: my $release = $parser->get_text();
13799: $release =~ s/(^\s*|\s*$ )//gx;
13800: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
13801: }
13802: } elsif ($item ne '' && $name ne '') {
13803: my $release = $parser->get_text();
13804: $release =~ s/(^\s*|\s*$ )//gx;
13805: $needsrelease{$item.':'.$name.':'.$value} = $release;
13806: }
13807: }
13808: }
13809: }
13810: }
13811:
13812: # ---------------------------------------------------------- Read managers table
13813: {
13814: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
13815: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
13816: while (my $configline=<$config>) {
13817: chomp($configline);
13818: next if ($configline =~ /^\#/);
13819: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
13820: $managerstab{$configline} = 1;
13821: }
13822: }
13823: close($config);
13824: }
13825: }
13826: }
13827:
13828: # ------------- set up temporary directory
13829: {
13830: $tmpdir = LONCAPA::tempdir();
13831:
13832: }
13833:
13834: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
13835: 'compress_threshold'=> 20_000,
13836: });
13837:
13838: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
13839: $dumpcount=0;
13840: $locknum=0;
13841:
13842: &logtouch();
13843: &logthis('<font color="yellow">INFO: Read configuration</font>');
13844: $readit=1;
13845: {
13846: use integer;
13847: my $test=(2**32)+1;
13848: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
13849: &logthis(" Detected 64bit platform ($_64bit)");
13850: }
13851: }
13852: }
13853:
13854: 1;
13855: __END__
13856:
13857: =pod
13858:
13859: =head1 NAME
13860:
13861: Apache::lonnet - Subroutines to ask questions about things in the network.
13862:
13863: =head1 SYNOPSIS
13864:
13865: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
13866:
13867: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
13868:
13869: Common parameters:
13870:
13871: =over 4
13872:
13873: =item *
13874:
13875: $uname : an internal username (if $cname expecting a course Id specifically)
13876:
13877: =item *
13878:
13879: $udom : a domain (if $cdom expecting a course's domain specifically)
13880:
13881: =item *
13882:
13883: $symb : a resource instance identifier
13884:
13885: =item *
13886:
13887: $namespace : the name of a .db file that contains the data needed or
13888: being set.
13889:
13890: =back
13891:
13892: =head1 OVERVIEW
13893:
13894: lonnet provides subroutines which interact with the
13895: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
13896: about classes, users, and resources.
13897:
13898: For many of these objects you can also use this to store data about
13899: them or modify them in various ways.
13900:
13901: =head2 Symbs
13902:
13903: To identify a specific instance of a resource, LON-CAPA uses symbols
13904: or "symbs"X<symb>. These identifiers are built from the URL of the
13905: map, the resource number of the resource in the map, and the URL of
13906: the resource itself. The latter is somewhat redundant, but might help
13907: if maps change.
13908:
13909: An example is
13910:
13911: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
13912:
13913: The respective map entry is
13914:
13915: <resource id="19" src="/res/msu/korte/tests/part12.problem"
13916: title="Problem 2">
13917: </resource>
13918:
13919: Symbs are used by the random number generator, as well as to store and
13920: restore data specific to a certain instance of for example a problem.
13921:
13922: =head2 Storing And Retrieving Data
13923:
13924: X<store()>X<cstore()>X<restore()>Three of the most important functions
13925: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
13926: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
13927: is is the non-critical message twin of cstore. These functions are for
13928: handlers to store a perl hash to a user's permanent data space in an
13929: easy manner, and to retrieve it again on another call. It is expected
13930: that a handler would use this once at the beginning to retrieve data,
13931: and then again once at the end to send only the new data back.
13932:
13933: The data is stored in the user's data directory on the user's
13934: homeserver under the ID of the course.
13935:
13936: The hash that is returned by restore will have all of the previous
13937: value for all of the elements of the hash.
13938:
13939: Example:
13940:
13941: #creating a hash
13942: my %hash;
13943: $hash{'foo'}='bar';
13944:
13945: #storing it
13946: &Apache::lonnet::cstore(\%hash);
13947:
13948: #changing a value
13949: $hash{'foo'}='notbar';
13950:
13951: #adding a new value
13952: $hash{'bar'}='foo';
13953: &Apache::lonnet::cstore(\%hash);
13954:
13955: #retrieving the hash
13956: my %history=&Apache::lonnet::restore();
13957:
13958: #print the hash
13959: foreach my $key (sort(keys(%history))) {
13960: print("\%history{$key} = $history{$key}");
13961: }
13962:
13963: Will print out:
13964:
13965: %history{1:foo} = bar
13966: %history{1:keys} = foo:timestamp
13967: %history{1:timestamp} = 990455579
13968: %history{2:bar} = foo
13969: %history{2:foo} = notbar
13970: %history{2:keys} = foo:bar:timestamp
13971: %history{2:timestamp} = 990455580
13972: %history{bar} = foo
13973: %history{foo} = notbar
13974: %history{timestamp} = 990455580
13975: %history{version} = 2
13976:
13977: Note that the special hash entries C<keys>, C<version> and
13978: C<timestamp> were added to the hash. C<version> will be equal to the
13979: total number of versions of the data that have been stored. The
13980: C<timestamp> attribute will be the UNIX time the hash was
13981: stored. C<keys> is available in every historical section to list which
13982: keys were added or changed at a specific historical revision of a
13983: hash.
13984:
13985: B<Warning>: do not store the hash that restore returns directly. This
13986: will cause a mess since it will restore the historical keys as if the
13987: were new keys. I.E. 1:foo will become 1:1:foo etc.
13988:
13989: Calling convention:
13990:
13991: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
13992: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
13993:
13994: For more detailed information, see lonnet specific documentation.
13995:
13996: =head1 RETURN MESSAGES
13997:
13998: =over 4
13999:
14000: =item * B<con_lost>: unable to contact remote host
14001:
14002: =item * B<con_delayed>: unable to contact remote host, message will be delivered
14003: when the connection is brought back up
14004:
14005: =item * B<con_failed>: unable to contact remote host and unable to save message
14006: for later delivery
14007:
14008: =item * B<error:>: an error a occurred, a description of the error follows the :
14009:
14010: =item * B<no_such_host>: unable to fund a host associated with the user/domain
14011: that was requested
14012:
14013: =back
14014:
14015: =head1 PUBLIC SUBROUTINES
14016:
14017: =head2 Session Environment Functions
14018:
14019: =over 4
14020:
14021: =item *
14022: X<appenv()>
14023: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
14024: the user envirnoment file, and will be restored for each access this
14025: user makes during this session, also modifies the %env for the current
14026: process. Optional rolesarrayref - if defined contains a reference to an array
14027: of roles which are exempt from the restriction on modifying user.role entries
14028: in the user's environment.db and in %env.
14029:
14030: =item *
14031: X<delenv()>
14032: B<delenv($delthis,$regexp)>: removes all items from the session
14033: environment file that begin with $delthis. If the
14034: optional second arg - $regexp - is true, $delthis is treated as a
14035: regular expression, otherwise \Q$delthis\E is used.
14036: The values are also deleted from the current processes %env.
14037:
14038: =item * get_env_multiple($name)
14039:
14040: gets $name from the %env hash, it seemlessly handles the cases where multiple
14041: values may be defined and end up as an array ref.
14042:
14043: returns an array of values
14044:
14045: =back
14046:
14047: =head2 User Information
14048:
14049: =over 4
14050:
14051: =item *
14052: X<queryauthenticate()>
14053: B<queryauthenticate($uname,$udom)>: try to determine user's current
14054: authentication scheme
14055:
14056: =item *
14057: X<authenticate()>
14058: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
14059: authenticate user from domain's lib servers (first use the current
14060: one). C<$upass> should be the users password.
14061: $checkdefauth is optional (value is 1 if a check should be made to
14062: authenticate user using default authentication method, and allow
14063: account creation if username does not have account in the domain).
14064: $clientcancheckhost is optional (value is 1 if checking whether the
14065: server can host will occur on the client side in lonauth.pm).
14066:
14067: =item *
14068: X<homeserver()>
14069: B<homeserver($uname,$udom)>: find the server which has
14070: the user's directory and files (there must be only one), this caches
14071: the answer, and also caches if there is a borken connection.
14072:
14073: =item *
14074: X<idget()>
14075: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
14076: a list of student/employee IDs or clicker IDs
14077: (student/employee IDs are a unique resource in a domain, there must be
14078: only 1 ID per username, and only 1 username per ID in a specific domain).
14079: clickerIDs are not necessarily unique, as students might share clickers.
14080: (returns hash: id=>name,id=>name)
14081:
14082: =item *
14083: X<idrget()>
14084: B<idrget($udom,@unames)>: find the IDs behind a list of
14085: usernames (returns hash: name=>id,name=>id)
14086:
14087: =item *
14088: X<idput()>
14089: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
14090: names and associated student/employee IDs or clicker IDs.
14091:
14092: =item *
14093: X<iddel()>
14094: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
14095: student/employee ID or clicker ID username look-ups from domain.
14096: The homeserver ($uhome) and namespace ($namespace) are optional.
14097: If no $uhome is provided, it will be determined usig &homeserver()
14098: for each user. If no $namespace is provided, the default is ids.
14099:
14100: =item *
14101: X<updateclickers()>
14102: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
14103: clicker ID-to-username look-ups in clickers.db on library server.
14104: Permitted actions are add or del (i.e., add or delete). The
14105: clickers.db contains clickerID as keys (escaped), and each corresponding
14106: value is an escaped comma-separated list of usernames (for whom the
14107: library server is the homeserver), who registered that particular ID.
14108: If $critical is true, the update will be sent via &critical, otherwise
14109: &reply() will be used.
14110:
14111: =item *
14112: X<rolesinit()>
14113: B<rolesinit($udom,$username)>: get user privileges.
14114: returns user role, first access and timer interval hashes
14115:
14116: =item *
14117: X<privileged()>
14118: B<privileged($username,$domain)>: returns a true if user has a
14119: privileged and active role (i.e. su or dc), false otherwise.
14120:
14121: =item *
14122: X<getsection()>
14123: B<getsection($udom,$uname,$cname)>: finds the section of student in the
14124: course $cname, return section name/number or '' for "not in course"
14125: and '-1' for "no section"
14126:
14127: =item *
14128: X<userenvironment()>
14129: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
14130: passed in @what from the requested user's environment, returns a hash
14131:
14132: =item *
14133: X<userlog_query()>
14134: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
14135: activity.log file. %filters defines filters applied when parsing the
14136: log file. These can be start or end timestamps, or the type of action
14137: - log to look for Login or Logout events, check for Checkin or
14138: Checkout, role for role selection. The response is in the form
14139: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
14140: escaped strings of the action recorded in the activity.log file.
14141:
14142: =back
14143:
14144: =head2 User Roles
14145:
14146: =over 4
14147:
14148: =item *
14149:
14150: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
14151: returns codes for allowed actions.
14152:
14153: The first argument is required, all others are optional.
14154:
14155: $priv is the privilege being checked.
14156: $uri contains additional information about what is being checked for access (e.g.,
14157: URL, course ID etc.).
14158: $symb is the unique resource instance identifier in a course; if needed,
14159: but not provided, it will be retrieved via a call to &symbread().
14160: $role is the role for which a priv is being checked (only used if priv is evb).
14161: $clientip is the user's IP address (only used when checking for access to portfolio
14162: files).
14163: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
14164: prevents recursive calls to &allowed.
14165:
14166: F: full access
14167: U,I,K: authentication modes (cxx only)
14168: '': forbidden
14169: 1: user needs to choose course
14170: 2: browse allowed
14171: A: passphrase authentication needed
14172: B: access temporarily blocked because of a blocking event in a course.
14173:
14174: =item *
14175:
14176: constructaccess($url,$setpriv) : check for access to construction space URL
14177:
14178: See if the owner domain and name in the URL match those in the
14179: expected environment. If so, return three element list
14180: ($ownername,$ownerdomain,$ownerhome).
14181:
14182: Otherwise return the null string.
14183:
14184: If second argument 'setpriv' is true, it assigns the privileges,
14185: and returns the same three element list, unless the owner has
14186: blocked "ad hoc" Domain Coordinator access to the Author Space,
14187: in which case the null string is returned.
14188:
14189: =item *
14190:
14191: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14192: define a custom role rolename set privileges in format of lonTabs/roles.tab
14193: for system, domain, and course level. $uname and $udom are optional (current
14194: user's username and domain will be used when either of $uname or $udom are absent.
14195:
14196: =item *
14197:
14198: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14199: (rolesplain.tab); plain text explanation of a user role term.
14200: $type is Course (default) or Community.
14201: If $forcedefault evaluates to true, text returned will be default
14202: text for $type. Otherwise, if this is a course, the text returned
14203: will be a custom name for the role (if defined in the course's
14204: environment). If no custom name is defined the default is returned.
14205:
14206: =item *
14207:
14208: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14209: All arguments are optional. Returns a hash of a roles, either for
14210: co-author/assistant author roles for a user's Construction Space
14211: (default), or if $context is 'userroles', roles for the user himself,
14212: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14213: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14214: For each key, value is set to colon-separated start and end times for
14215: the role. If no username and domain are specified, will default to
14216: current user/domain. Types, roles, and roledoms are references to arrays
14217: of role statuses (active, future or previous), roles
14218: (e.g., cc,in, st etc.) and domains of the roles which can be used
14219: to restrict the list of roles reported. If no array ref is
14220: provided for types, will default to return only active roles.
14221:
14222: =item *
14223:
14224: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14225: user: $uname:$udom has a role in the course: $cdom_$cnum.
14226:
14227: Additional optional arguments are: $type (if role checking is to be restricted
14228: to certain user status types -- previous (expired roles), active (currently
14229: available roles) or future (roles available in the future), and
14230: $hideprivileged -- if true will not report course roles for users who
14231: have active Domain Coordinator role in course's domain or in additional
14232: domains (specified in 'Domains to check for privileged users' in course
14233: environment -- set via: Course Settings -> Classlists and staff listing).
14234:
14235: =item *
14236:
14237: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14238: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14239: $possdomains and $possroles are optional array refs -- to domains to check and
14240: roles to check. If $possdomains is not specified, a dump will be done of the
14241: users' roles.db to check for a dc or su role in any domain. This can be
14242: time consuming if &privileged is called repeatedly (e.g., when displaying a
14243: classlist), so in such cases, supplying a $possdomains array is preferred, as
14244: this then allows &privileged_by_domain() to be used, which caches the identity
14245: of privileged users, eliminating the need for repeated calls to &dump().
14246:
14247: =item *
14248:
14249: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14250: where the outer hash keys are domains specified in the $possdomains array ref,
14251: next inner hash keys are privileged roles specified in the $roles array ref,
14252: and the innermost hash contains key = value pairs for username:domain = end:start
14253: for active or future "privileged" users with that role in that domain. To avoid
14254: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14255: innerhash are cached using priv_$role and $dom as the identifiers.
14256:
14257: =back
14258:
14259: =head2 User Modification
14260:
14261: =over 4
14262:
14263: =item *
14264:
14265: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14266: user for the level given by URL. Optional start and end dates (leave empty
14267: string or zero for "no date")
14268:
14269: =item *
14270:
14271: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14272: change a users, password, possible return values are: ok,
14273: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14274: refused
14275:
14276: =item *
14277:
14278: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14279:
14280: =item *
14281:
14282: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14283: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14284:
14285: will update user information (firstname,middlename,lastname,generation,
14286: permanentemail), and if forceid is true, student/employee ID also.
14287: A user's institutional affiliation(s) can also be updated.
14288: User information fields will not be overwritten with empty entries
14289: unless the field is included in the $candelete array reference.
14290: This array is included when a single user is modified via "Manage Users",
14291: or when Autoupdate.pl is run by cron in a domain.
14292:
14293: =item *
14294:
14295: modifystudent
14296:
14297: modify a student's enrollment and identification information.
14298: The course id is resolved based on the current user's environment.
14299: This means the invoking user must be a course coordinator or otherwise
14300: associated with a course.
14301:
14302: This call is essentially a wrapper for lonnet::modifyuser and
14303: lonnet::modify_student_enrollment
14304:
14305: Inputs:
14306:
14307: =over 4
14308:
14309: =item B<$udom> Student's loncapa domain
14310:
14311: =item B<$uname> Student's loncapa login name
14312:
14313: =item B<$uid> Student/Employee ID
14314:
14315: =item B<$umode> Student's authentication mode
14316:
14317: =item B<$upass> Student's password
14318:
14319: =item B<$first> Student's first name
14320:
14321: =item B<$middle> Student's middle name
14322:
14323: =item B<$last> Student's last name
14324:
14325: =item B<$gene> Student's generation
14326:
14327: =item B<$usec> Student's section in course
14328:
14329: =item B<$end> Unix time of the roles expiration
14330:
14331: =item B<$start> Unix time of the roles start date
14332:
14333: =item B<$forceid> If defined, allow $uid to be changed
14334:
14335: =item B<$desiredhome> server to use as home server for student
14336:
14337: =item B<$email> Student's permanent e-mail address
14338:
14339: =item B<$type> Type of enrollment (auto or manual)
14340:
14341: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14342:
14343: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14344:
14345: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14346:
14347: =item B<$context> role change context (shown in User Management Logs display in a course)
14348:
14349: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14350:
14351: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
14352:
14353: =back
14354:
14355: =item *
14356:
14357: modify_student_enrollment
14358:
14359: Change a student's enrollment status in a class. The environment variable
14360: 'role.request.course' must be defined for this function to proceed.
14361:
14362: Inputs:
14363:
14364: =over 4
14365:
14366: =item $udom, student's domain
14367:
14368: =item $uname, student's name
14369:
14370: =item $uid, student's user id
14371:
14372: =item $first, student's first name
14373:
14374: =item $middle
14375:
14376: =item $last
14377:
14378: =item $gene
14379:
14380: =item $usec
14381:
14382: =item $end
14383:
14384: =item $start
14385:
14386: =item $type
14387:
14388: =item $locktype
14389:
14390: =item $cid
14391:
14392: =item $selfenroll
14393:
14394: =item $context
14395:
14396: =item $credits, number of credits student will earn from this class
14397:
14398: =item $instsec, institutional course section code for student
14399:
14400: =back
14401:
14402:
14403: =item *
14404:
14405: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
14406: custom role; give a custom role to a user for the level given by URL. Specify
14407: name and domain of role author, and role name
14408:
14409: =item *
14410:
14411: revokerole($udom,$uname,$url,$role) : revoke a role for url
14412:
14413: =item *
14414:
14415: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
14416:
14417: =back
14418:
14419: =head2 Course Infomation
14420:
14421: =over 4
14422:
14423: =item *
14424:
14425: coursedescription($courseid,$options) : returns a hash of information about the
14426: specified course id, including all environment settings for the
14427: course, the description of the course will be in the hash under the
14428: key 'description'
14429:
14430: $options is an optional parameter that if supplied is a hash reference that controls
14431: what how this function works. It has the following key/values:
14432:
14433: =over 4
14434:
14435: =item freshen_cache
14436:
14437: If defined, and the environment cache for the course is valid, it is
14438: returned in the returned hash.
14439:
14440: =item one_time
14441:
14442: If defined, the last cache time is set to _now_
14443:
14444: =item user
14445:
14446: If defined, the supplied username is used instead of the current user.
14447:
14448:
14449: =back
14450:
14451: =item *
14452:
14453: resdata($name,$domain,$type,@which) : request for current parameter
14454: setting for a specific $type, where $type is either 'course' or 'user',
14455: @what should be a list of parameters to ask about. This routine caches
14456: answers for 10 minutes.
14457:
14458: =item *
14459:
14460: get_courseresdata($courseid, $domain) : dump the entire course resource
14461: data base, returning a hash that is keyed by the resource name and has
14462: values that are the resource value. I believe that the timestamps and
14463: versions are also returned.
14464:
14465: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
14466: supplemental content area. This routine caches the number of files for
14467: 10 minutes.
14468:
14469: =back
14470:
14471: =head2 Course Modification
14472:
14473: =over 4
14474:
14475: =item *
14476:
14477: writecoursepref($courseid,%prefs) : write preferences (environment
14478: database) for a course
14479:
14480: =item *
14481:
14482: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
14483:
14484: =item *
14485:
14486: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
14487:
14488: =item *
14489:
14490: is_course($courseid), is_course($cdom, $cnum)
14491:
14492: Accepts either a combined $courseid (in the form of domain_courseid) or the
14493: two component version $cdom, $cnum. It checks if the specified course exists.
14494:
14495: Returns:
14496: undef if the course doesn't exist, otherwise
14497: in scalar context the combined courseid.
14498: in list context the two components of the course identifier, domain and
14499: courseid.
14500:
14501: =back
14502:
14503: =head2 Resource Subroutines
14504:
14505: =over 4
14506:
14507: =item *
14508:
14509: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
14510:
14511: =item *
14512:
14513: repcopy($filename) : subscribes to the requested file, and attempts to
14514: replicate from the owning library server, Might return
14515: 'unavailable', 'not_found', 'forbidden', 'ok', or
14516: 'bad_request', also attempts to grab the metadata for the
14517: resource. Expects the local filesystem pathname
14518: (/home/httpd/html/res/....)
14519:
14520: =back
14521:
14522: =head2 Resource Information
14523:
14524: =over 4
14525:
14526: =item *
14527:
14528: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
14529: and returns the value of a variety of different possible values,
14530: $varname should be a request string, and the other parameters can be
14531: used to specify who and what one is asking about. Ordinarily, $cid
14532: does not need to be specified, as it is retrived from
14533: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
14534: within lonuserstate::loadmap() when initializing a course, before
14535: $env{'request.course.id'} has been set, so it needs to be provided
14536: in that one case.
14537:
14538: Possible values for $varname are environment.lastname (or other item
14539: from the envirnment hash), user.name (or someother aspect about the
14540: user), resource.0.maxtries (or some other part and parameter of a
14541: resource)
14542:
14543: =item *
14544:
14545: directcondval($number) : get current value of a condition; reads from a state
14546: string
14547:
14548: =item *
14549:
14550: condval($condidx) : value of condition index based on state
14551:
14552: =item *
14553:
14554: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
14555: resource's metadata, $what should be either a specific key, or either
14556: 'keys' (to get a list of possible keys) or 'packages' to get a list of
14557: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
14558:
14559: this function automatically caches all requests
14560:
14561: =item *
14562:
14563: metadata_query($query,$custom,$customshow) : make a metadata query against the
14564: network of library servers; returns file handle of where SQL and regex results
14565: will be stored for query
14566:
14567: =item *
14568:
14569: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
14570: return symbolic list entry (all arguments optional).
14571:
14572: Args: filename is the filename (including path) for the file for which a symb
14573: is required; donotrecurse, if true will prevent calls to allowed() being made
14574: to check access status if more than one resource was found in the bighash
14575: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
14576: a randompick); ignorecachednull, if true will prevent a symb of '' being
14577: returned if $env{$cache_str} is defined as ''; checkforblock if true will
14578: cause possible symbs to be checked to determine if they are subject to content
14579: blocking, if so they will not be included as possible symbs; possibles is a
14580: ref to a hash, which, as a side effect, will be populated with all possible
14581: symbs (content blocking not tested).
14582:
14583: returns the data handle
14584:
14585: =item *
14586:
14587: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
14588: and is a possible symb for the URL in $thisfn, and if is an encrypted
14589: resource that the user accessed using /enc/ returns a 1 on success, 0
14590: on failure, user must be in a course, as it assumes the existence of
14591: the course initial hash, and uses $env('request.course.id'}. The third
14592: arg is an optional reference to a scalar. If this arg is passed in the
14593: call to symbverify, it will be set to 1 if the symb has been set to be
14594: encrypted; otherwise it will be null.
14595:
14596: =item *
14597:
14598: symbclean($symb) : removes versions numbers from a symb, returns the
14599: cleaned symb
14600:
14601: =item *
14602:
14603: is_on_map($uri) : checks if the $uri is somewhere on the current
14604: course map, user must be in a course for it to work.
14605:
14606: =item *
14607:
14608: numval($salt) : return random seed value (addend for rndseed)
14609:
14610: =item *
14611:
14612: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
14613: a random seed, all arguments are optional, if they aren't sent it uses the
14614: environment to derive them. Note: if symb isn't sent and it can't get one
14615: from &symbread it will use the current time as its return value
14616:
14617: =item *
14618:
14619: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
14620: unfakeable, receipt
14621:
14622: =item *
14623:
14624: receipt() : API to ireceipt working off of env values; given out to users
14625:
14626: =item *
14627:
14628: countacc($url) : count the number of accesses to a given URL
14629:
14630: =item *
14631:
14632: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
14633:
14634: =item *
14635:
14636: checkin($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 $tcrsid)
14637:
14638: =item *
14639:
14640: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
14641:
14642: =item *
14643:
14644: devalidate($symb) : devalidate temporary spreadsheet calculations,
14645: forcing spreadsheet to reevaluate the resource scores next time.
14646:
14647: =item *
14648:
14649: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
14650: when viewing in course context.
14651:
14652: input: six args -- filename (decluttered), course number, course domain,
14653: url, symb (if registered) and group (if this is a
14654: group item -- e.g., bulletin board, group page etc.).
14655:
14656: output: array of five scalars --
14657: $cfile -- url for file editing if editable on current server
14658: $home -- homeserver of resource (i.e., for author if published,
14659: or course if uploaded.).
14660: $switchserver -- 1 if server switch will be needed.
14661: $forceedit -- 1 if icon/link should be to go to edit mode
14662: $forceview -- 1 if icon/link should be to go to view mode
14663:
14664: =item *
14665:
14666: is_course_upload($file,$cnum,$cdom)
14667:
14668: Used in course context to determine if current file was uploaded to
14669: the course (i.e., would be found in /userfiles/docs on the course's
14670: homeserver.
14671:
14672: input: 3 args -- filename (decluttered), course number and course domain.
14673: output: boolean -- 1 if file was uploaded.
14674:
14675: =back
14676:
14677: =head2 Storing/Retreiving Data
14678:
14679: =over 4
14680:
14681: =item *
14682:
14683: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
14684: permanently for this url; hashref needs to be given and should be a \%hashname;
14685: the remaining args aren't required and if they aren't passed or are '' they will
14686: be derived from the env (with the exception of $laststore, which is an
14687: optional arg used when a user's submission is stored in grading).
14688: $laststore is $version=$timestamp, where $version is the most recent version
14689: number retrieved for the corresponding $symb in the $namespace db file, and
14690: $timestamp is the timestamp for that transaction (UNIX time).
14691: $laststore is currently only passed when cstore() is called by
14692: structuretags::finalize_storage().
14693:
14694: =item *
14695:
14696: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
14697: but uses critical subroutine
14698:
14699: =item *
14700:
14701: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
14702: all args are optional
14703:
14704: =item *
14705:
14706: dumpstore($namespace,$udom,$uname,$regexp,$range) :
14707: dumps the complete (or key matching regexp) namespace into a hash
14708: ($udom, $uname, $regexp, $range are optional) for a namespace that is
14709: normally &store()ed into
14710:
14711: $range should be either an integer '100' (give me the first 100
14712: matching records)
14713: or be two integers sperated by a - with no spaces
14714: '30-50' (give me the 30th through the 50th matching
14715: records)
14716:
14717:
14718: =item *
14719:
14720: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
14721: replaces a &store() version of data with a replacement set of data
14722: for a particular resource in a namespace passed in the $storehash hash
14723: reference. If $tolog is true, the transaction is logged in the courselog
14724: with an action=PUTSTORE.
14725:
14726: =item *
14727:
14728: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
14729: works very similar to store/cstore, but all data is stored in a
14730: temporary location and can be reset using tmpreset, $storehash should
14731: be a hash reference, returns nothing on success
14732:
14733: =item *
14734:
14735: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
14736: similar to restore, but all data is stored in a temporary location and
14737: can be reset using tmpreset. Returns a hash of values on success,
14738: error string otherwise.
14739:
14740: =item *
14741:
14742: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
14743: deltes all keys for $symb form the temporary storage hash.
14744:
14745: =item *
14746:
14747: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14748: reference filled in from namesp ($udom and $uname are optional)
14749:
14750: =item *
14751:
14752: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
14753: namesp ($udom and $uname are optional)
14754:
14755: =item *
14756:
14757: dump($namespace,$udom,$uname,$regexp,$range) :
14758: dumps the complete (or key matching regexp) namespace into a hash
14759: ($udom, $uname, $regexp, $range are optional)
14760:
14761: $range should be either an integer '100' (give me the first 100
14762: matching records)
14763: or be two integers sperated by a - with no spaces
14764: '30-50' (give me the 30th through the 50th matching
14765: records)
14766: =item *
14767:
14768: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
14769: $store can be a scalar, an array reference, or if the amount to be
14770: incremented is > 1, a hash reference.
14771:
14772: ($udom and $uname are optional)
14773:
14774: =item *
14775:
14776: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
14777: ($udom and $uname are optional)
14778:
14779: =item *
14780:
14781: cput($namespace,$storehash,$udom,$uname) : critical put
14782: ($udom and $uname are optional)
14783:
14784: =item *
14785:
14786: newput($namespace,$storehash,$udom,$uname) :
14787:
14788: Attempts to store the items in the $storehash, but only if they don't
14789: currently exist, if this succeeds you can be certain that you have
14790: successfully created a new key value pair in the $namespace db.
14791:
14792:
14793: Args:
14794: $namespace: name of database to store values to
14795: $storehash: hashref to store to the db
14796: $udom: (optional) domain of user containing the db
14797: $uname: (optional) name of user caontaining the db
14798:
14799: Returns:
14800: 'ok' -> succeeded in storing all keys of $storehash
14801: 'key_exists: <key>' -> failed to anything out of $storehash, as at
14802: least <key> already existed in the db (other
14803: requested keys may also already exist)
14804: 'error: <msg>' -> unable to tie the DB or other error occurred
14805: 'con_lost' -> unable to contact request server
14806: 'refused' -> action was not allowed by remote machine
14807:
14808:
14809: =item *
14810:
14811: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14812: reference filled in from namesp (encrypts the return communication)
14813: ($udom and $uname are optional)
14814:
14815: =item *
14816:
14817: log($udom,$name,$home,$message) : write to permanent log for user; use
14818: critical subroutine
14819:
14820: =item *
14821:
14822: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
14823: array reference filled in from namespace found in domain level on either
14824: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
14825:
14826: =item *
14827:
14828: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
14829: domain level either on specified domain server ($uhome) or primary domain
14830: server ($udom and $uhome are optional)
14831:
14832: =item *
14833:
14834: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
14835: for: authentication, language, quotas, timezone, date locale, and portal URL in
14836: the target domain.
14837:
14838: May also include additional key => value pairs for the following groups:
14839:
14840: =over
14841:
14842: =item
14843: disk quotas (MB allocated by default to portfolios and authoring spaces).
14844:
14845: =over
14846:
14847: =item defaultquota, authorquota
14848:
14849: =back
14850:
14851: =item
14852: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
14853: portfolio for users).
14854:
14855: =over
14856:
14857: =item
14858: aboutme, blog, webdav, portfolio
14859:
14860: =back
14861:
14862: =item
14863: requestcourses: ability to request courses, and how requests are processed.
14864:
14865: =over
14866:
14867: =item
14868: official, unofficial, community, textbook, placement
14869:
14870: =back
14871:
14872: =item
14873: inststatus: types of institutional affiliation, and order in which they are displayed.
14874:
14875: =over
14876:
14877: =item
14878: inststatustypes, inststatusorder, inststatusguest
14879:
14880: =back
14881:
14882: =item
14883: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
14884: for course's uploaded content.
14885:
14886: =over
14887:
14888: =item
14889: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
14890: communityquota, textbookquota, placementquota
14891:
14892: =back
14893:
14894: =item
14895: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
14896: on your servers.
14897:
14898: =over
14899:
14900: =item
14901: remotesessions, hostedsessions
14902:
14903: =back
14904:
14905: =back
14906:
14907: In cases where a domain coordinator has never used the "Set Domain Configuration"
14908: utility to create a configuration.db file on a domain's primary library server
14909: only the following domain defaults: auth_def, auth_arg_def, lang_def
14910: -- corresponding values are authentication type (internal, krb4, krb5,
14911: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
14912: will be available. Values are retrieved from cache (if current), unless the
14913: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
14914: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
14915:
14916: Typical usage:
14917:
14918: %domdefaults = &get_domain_defaults($target_domain);
14919:
14920: =back
14921:
14922: =head2 Network Status Functions
14923:
14924: =over 4
14925:
14926: =item *
14927:
14928: dirlist() : return directory list based on URI (first arg).
14929:
14930: Inputs: 1 required, 5 optional.
14931:
14932: =over
14933:
14934: =item
14935: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
14936:
14937: =item
14938: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
14939:
14940: =item
14941: $username - username of user/course to be listed. Extracted from $uri if absent.
14942:
14943: =item
14944: $getpropath - boolean: 1 if prepend path using &propath().
14945:
14946: =item
14947: $getuserdir - boolean: 1 if prepend path for "userfiles".
14948:
14949: =item
14950: $alternateRoot - path to prepend in place of path from $uri.
14951:
14952: =back
14953:
14954: Returns: Array of up to two items.
14955:
14956: =over
14957:
14958: a reference to an array of files/subdirectories
14959:
14960: =over
14961:
14962: Each element in the array of files/subdirectories is a & separated list of
14963: item name and the result of running stat on the item. If dirlist was requested
14964: for a file instead of a directory, the item name will be ''. For a directory
14965: listing, if the item is a metadata file, the element will end &N&M
14966: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
14967: default copyright set (1).
14968:
14969: =back
14970:
14971: a scalar containing error condition (if encountered).
14972:
14973: =over
14974:
14975: =item
14976: no_host (no homeserver identified for $username:$domain).
14977:
14978: =item
14979: no_such_host (server contacted for listing not identified as valid host).
14980:
14981: =item
14982: con_lost (connection to remote server failed).
14983:
14984: =item
14985: refused (invalid $username:$domain received on lond side).
14986:
14987: =item
14988: no_such_dir (directory at specified path on lond side does not exist).
14989:
14990: =item
14991: empty (directory at specified path on lond side is empty).
14992:
14993: =over
14994:
14995: This is currently not encountered because the &ls3, &ls2,
14996: &ls (_handler) routines on the lond side do not filter out
14997: . and .. from a directory listing.
14998:
14999: =back
15000:
15001: =back
15002:
15003: =back
15004:
15005: =item *
15006:
15007: spareserver() : find server with least workload from spare.tab
15008:
15009:
15010: =item *
15011:
15012: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
15013: if there is no corresponding loncapa host.
15014:
15015: =back
15016:
15017:
15018: =head2 Apache Request
15019:
15020: =over 4
15021:
15022: =item *
15023:
15024: ssi($url,%hash) : server side include, does a complete request cycle on url to
15025: localhost, posts hash
15026:
15027: =back
15028:
15029: =head2 Data to String to Data
15030:
15031: =over 4
15032:
15033: =item *
15034:
15035: hash2str(%hash) : convert a hash into a string complete with escaping and '='
15036: and '&' separators, supports elements that are arrayrefs and hashrefs
15037:
15038: =item *
15039:
15040: hashref2str($hashref) : convert a hashref into a string complete with
15041: escaping and '=' and '&' separators, supports elements that are
15042: arrayrefs and hashrefs
15043:
15044: =item *
15045:
15046: arrayref2str($arrayref) : convert an arrayref into a string complete
15047: with escaping and '&' separators, supports elements that are arrayrefs
15048: and hashrefs
15049:
15050: =item *
15051:
15052: str2hash($string) : convert string to hash using unescaping and
15053: splitting on '=' and '&', supports elements that are arrayrefs and
15054: hashrefs
15055:
15056: =item *
15057:
15058: str2array($string) : convert string to hash using unescaping and
15059: splitting on '&', supports elements that are arrayrefs and hashrefs
15060:
15061: =back
15062:
15063: =head2 Logging Routines
15064:
15065:
15066: These routines allow one to make log messages in the lonnet.log and
15067: lonnet.perm logfiles.
15068:
15069: =over 4
15070:
15071: =item *
15072:
15073: logtouch() : make sure the logfile, lonnet.log, exists
15074:
15075: =item *
15076:
15077: logthis() : append message to the normal lonnet.log file, it gets
15078: preiodically rolled over and deleted.
15079:
15080: =item *
15081:
15082: logperm() : append a permanent message to lonnet.perm.log, this log
15083: file never gets deleted by any automated portion of the system, only
15084: messages of critical importance should go in here.
15085:
15086:
15087: =back
15088:
15089: =head2 General File Helper Routines
15090:
15091: =over 4
15092:
15093: =item *
15094:
15095: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
15096: (a) files in /uploaded
15097: (i) If a local copy of the file exists -
15098: compares modification date of local copy with last-modified date for
15099: definitive version stored on home server for course. If local copy is
15100: stale, requests a new version from the home server and stores it.
15101: If the original has been removed from the home server, then local copy
15102: is unlinked.
15103: (ii) If local copy does not exist -
15104: requests the file from the home server and stores it.
15105:
15106: If $caller is 'uploadrep':
15107: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
15108: for request for files originally uploaded via DOCS.
15109: - returns 'ok' if fresh local copy now available, -1 otherwise.
15110:
15111: Otherwise:
15112: This indicates a call from the content generation phase of the request.
15113: - returns the entire contents of the file or -1.
15114:
15115: (b) files in /res
15116: - returns the entire contents of a file or -1;
15117: it properly subscribes to and replicates the file if neccessary.
15118:
15119:
15120: =item *
15121:
15122: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
15123: reference
15124:
15125: returns either a stat() list of data about the file or an empty list
15126: if the file doesn't exist or couldn't find out about it (connection
15127: problems or user unknown)
15128:
15129: =item *
15130:
15131: filelocation($dir,$file) : returns file system location of a file
15132: based on URI; meant to be "fairly clean" absolute reference, $dir is a
15133: directory that relative $file lookups are to looked in ($dir of /a/dir
15134: and a file of ../bob will become /a/bob)
15135:
15136: =item *
15137:
15138: hreflocation($dir,$file) : returns file system location or a URL; same as
15139: filelocation except for hrefs
15140:
15141: =item *
15142:
15143: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
15144: also removes beginning /home/httpd/html unless /priv/ follows it.
15145:
15146: =back
15147:
15148: =head2 Usererfile file routines (/uploaded*)
15149:
15150: =over 4
15151:
15152: =item *
15153:
15154: userfileupload(): main rotine for putting a file in a user or course's
15155: filespace, arguments are,
15156:
15157: formname - required - this is the name of the element in $env where the
15158: filename, and the contents of the file to create/modifed exist
15159: the filename is in $env{'form.'.$formname.'.filename'} and the
15160: contents of the file is located in $env{'form.'.$formname}
15161: context - if coursedoc, store the file in the course of the active role
15162: of the current user;
15163: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
15164: if 'canceloverwrite': delete file in tmp/overwrites directory
15165: subdir - required - subdirectory to put the file in under ../userfiles/
15166: if undefined, it will be placed in "unknown"
15167:
15168: (This routine calls clean_filename() to remove any dangerous
15169: characters from the filename, and then calls finuserfileupload() to
15170: complete the transaction)
15171:
15172: returns either the url of the uploaded file (/uploaded/....) if successful
15173: and /adm/notfound.html if unsuccessful
15174:
15175: =item *
15176:
15177: clean_filename(): routine for cleaing a filename up for storage in
15178: userfile space, argument is:
15179:
15180: filename - proposed filename
15181:
15182: returns: the new clean filename
15183:
15184: =item *
15185:
15186: finishuserfileupload(): routine that creates and sends the file to
15187: userspace, probably shouldn't be called directly
15188:
15189: docuname: username or courseid of destination for the file
15190: docudom: domain of user/course of destination for the file
15191: formname: same as for userfileupload()
15192: fname: filename (including subdirectories) for the file
15193: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15194: allfiles: reference to hash used to store objects found by parser
15195: codebase: reference to hash used for codebases of java objects found by parser
15196: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15197: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15198: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15199: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15200: context: if 'overwrite', will move the uploaded file from its temporary location to
15201: userfiles to facilitate overwriting a previously uploaded file with same name.
15202: mimetype: reference to scalar to accommodate mime type determined
15203: from File::MMagic if $parser = parse.
15204:
15205: returns either the url of the uploaded file (/uploaded/....) if successful
15206: and /adm/notfound.html if unsuccessful (or an error message if context
15207: was 'overwrite').
15208:
15209:
15210: =item *
15211:
15212: renameuserfile(): renames an existing userfile to a new name
15213:
15214: Args:
15215: docuname: username or courseid of destination for the file
15216: docudom: domain of user/course of destination for the file
15217: old: current file name (including any subdirs under userfiles)
15218: new: desired file name (including any subdirs under userfiles)
15219:
15220: =item *
15221:
15222: mkdiruserfile(): creates a directory is a userfiles dir
15223:
15224: Args:
15225: docuname: username or courseid of destination for the file
15226: docudom: domain of user/course of destination for the file
15227: dir: dir to create (including any subdirs under userfiles)
15228:
15229: =item *
15230:
15231: removeuserfile(): removes a file that exists in userfiles
15232:
15233: Args:
15234: docuname: username or courseid of destination for the file
15235: docudom: domain of user/course of destination for the file
15236: fname: filname to delete (including any subdirs under userfiles)
15237:
15238: =item *
15239:
15240: removeuploadedurl(): convience function for removeuserfile()
15241:
15242: Args:
15243: url: a full /uploaded/... url to delete
15244:
15245: =item *
15246:
15247: get_portfile_permissions():
15248: Args:
15249: domain: domain of user or course contain the portfolio files
15250: user: name of user or num of course contain the portfolio files
15251: Returns:
15252: hashref of a dump of the proper file_permissions.db
15253:
15254:
15255: =item *
15256:
15257: get_access_controls():
15258:
15259: Args:
15260: current_permissions: the hash ref returned from get_portfile_permissions()
15261: group: (optional) the group you want the files associated with
15262: file: (optional) the file you want access info on
15263:
15264: Returns:
15265: a hash (keys are file names) of hashes containing
15266: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15267: values are XML containing access control settings (see below)
15268:
15269: Internal notes:
15270:
15271: access controls are stored in file_permissions.db as key=value pairs.
15272: key -> path to file/file_name\0uniqueID:scope_end_start
15273: where scope -> public,guest,course,group,domains or users.
15274: end -> UNIX time for end of access (0 -> no end date)
15275: start -> UNIX time for start of access
15276:
15277: value -> XML description of access control
15278: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15279: <start></start>
15280: <end></end>
15281:
15282: <password></password> for scope type = guest
15283:
15284: <domain></domain> for scope type = course or group
15285: <number></number>
15286: <roles id="">
15287: <role></role>
15288: <access></access>
15289: <section></section>
15290: <group></group>
15291: </roles>
15292:
15293: <dom></dom> for scope type = domains
15294:
15295: <users> for scope type = users
15296: <user>
15297: <uname></uname>
15298: <udom></udom>
15299: </user>
15300: </users>
15301: </scope>
15302:
15303: Access data is also aggregated for each file in an additional key=value pair:
15304: key -> path to file/file_name\0accesscontrol
15305: value -> reference to hash
15306: hash contains key = value pairs
15307: where key = uniqueID:scope_end_start
15308: value = UNIX time record was last updated
15309:
15310: Used to improve speed of look-ups of access controls for each file.
15311:
15312: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15313:
15314: =item *
15315:
15316: modify_access_controls():
15317:
15318: Modifies access controls for a portfolio file
15319: Args
15320: 1. file name
15321: 2. reference to hash of required changes,
15322: 3. domain
15323: 4. username
15324: where domain,username are the domain of the portfolio owner
15325: (either a user or a course)
15326:
15327: Returns:
15328: 1. result of additions or updates ('ok' or 'error', with error message).
15329: 2. result of deletions ('ok' or 'error', with error message).
15330: 3. reference to hash of any new or updated access controls.
15331: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15332: key = integer (inbound ID)
15333: value = uniqueID
15334:
15335: =item *
15336:
15337: get_timebased_id():
15338:
15339: Attempts to get a unique timestamp-based suffix for use with items added to a
15340: course via the Course Editor (e.g., folders, composite pages,
15341: group bulletin boards).
15342:
15343: Args: (first three required; six others optional)
15344:
15345: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15346: docssequence, or name of group
15347:
15348: 2. keyid (alphanumeric): name of temporary locking key in hash,
15349: e.g., num, boardids
15350:
15351: 3. namespace: name of gdbm file used to store suffixes already assigned;
15352: file will be named nohist_namespace.db
15353:
15354: 4. cdom: domain of course; default is current course domain from %env
15355:
15356: 5. cnum: course number; default is current course number from %env
15357:
15358: 6. idtype: set to concat if an additional digit is to be appended to the
15359: unix timestamp to form the suffix, if the plain timestamp is already
15360: in use. Default is to not do this, but simply increment the unix
15361: timestamp by 1 until a unique key is obtained.
15362:
15363: 7. who: holder of locking key; defaults to user:domain for user.
15364:
15365: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
15366: retrying); default is 3.
15367:
15368: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
15369:
15370: Returns:
15371:
15372: 1. suffix obtained (numeric)
15373:
15374: 2. result of deleting locking key (ok if deleted, or lock never obtained)
15375:
15376: 3. error: contains (localized) error message if an error occurred.
15377:
15378:
15379: =back
15380:
15381: =head2 HTTP Helper Routines
15382:
15383: =over 4
15384:
15385: =item *
15386:
15387: escape() : unpack non-word characters into CGI-compatible hex codes
15388:
15389: =item *
15390:
15391: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
15392:
15393: =back
15394:
15395: =head1 PRIVATE SUBROUTINES
15396:
15397: =head2 Underlying communication routines (Shouldn't call)
15398:
15399: =over 4
15400:
15401: =item *
15402:
15403: subreply() : tries to pass a message to lonc, returns con_lost if incapable
15404:
15405: =item *
15406:
15407: reply() : uses subreply to send a message to remote machine, logs all failures
15408:
15409: =item *
15410:
15411: critical() : passes a critical message to another server; if cannot
15412: get through then place message in connection buffer directory and
15413: returns con_delayed, if incapable of saving message, returns
15414: con_failed
15415:
15416: =item *
15417:
15418: reconlonc() : tries to reconnect lonc client processes.
15419:
15420: =back
15421:
15422: =head2 Resource Access Logging
15423:
15424: =over 4
15425:
15426: =item *
15427:
15428: flushcourselogs() : flush (save) buffer logs and access logs
15429:
15430: =item *
15431:
15432: courselog($what) : save message for course in hash
15433:
15434: =item *
15435:
15436: courseacclog($what) : save message for course using &courselog(). Perform
15437: special processing for specific resource types (problems, exams, quizzes, etc).
15438:
15439: =item *
15440:
15441: goodbye() : flush course logs and log shutting down; it is called in srm.conf
15442: as a PerlChildExitHandler
15443:
15444: =back
15445:
15446: =head2 Other
15447:
15448: =over 4
15449:
15450: =item *
15451:
15452: symblist($mapname,%newhash) : update symbolic storage links
15453:
15454: =back
15455:
15456: =cut
15457:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonnet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / lonnet / perl