File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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Wed Dec 5 03:29:11 2018 UTC (5 years, 7 months ago) by
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- Avoid repeated redirects back and forth between balancer and target node
in corner case.
- Remove file on balancer with record of node in use when browser lacks
cookie for the active session on (balanced) node, when log-in page on
that node is set to redirect.
- If removal fails, remove the user's session file on the node itself.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1392 2018/12/05 03:29:11 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: use CGI::Cookie;
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 ($lonhost,$hostname,$context) = @_;
234: return if ($lonhost eq '');
235: if ($hostname eq '') {
236: $hostname = &hostname($lonhost);
237: }
238: return if ($hostname eq '');
239: my ($rep,$uselocal);
240: if ($context eq 'install') {
241: $uselocal = 1;
242: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
243: $uselocal = 1;
244: }
245: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
246: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
247: if ($distro eq '') {
248: $uselocal = 0;
249: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
250: if ($1 < 6) {
251: $uselocal = 0;
252: }
253: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
254: if ($1 < 12) {
255: $uselocal = 0;
256: }
257: }
258: }
259: if ($uselocal) {
260: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
261: } else {
262: $rep=&reply('servercerts',$lonhost);
263: }
264: my ($result,%returnhash);
265: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
266: ($rep eq 'unknown_cmd')) {
267: $result = $rep;
268: } else {
269: $result = 'ok';
270: my @pairs=split(/\&/,$rep);
271: foreach my $item (@pairs) {
272: my ($key,$value)=split(/=/,$item,2);
273: my $what = &unescape($key);
274: $returnhash{$what}=&thaw_unescape($value);
275: }
276: }
277: return ($result,\%returnhash);
278: }
279:
280: sub get_server_loncaparev {
281: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
282: if (defined($lonhost)) {
283: if (!defined(&hostname($lonhost))) {
284: undef($lonhost);
285: }
286: }
287: if (!defined($lonhost)) {
288: if (defined(&domain($dom,'primary'))) {
289: $lonhost=&domain($dom,'primary');
290: if ($lonhost eq 'no_host') {
291: undef($lonhost);
292: }
293: }
294: }
295: if (defined($lonhost)) {
296: my $cachetime = 12*3600;
297: if (!$ignore_cache) {
298: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
299: if (defined($cached)) {
300: return $loncaparev;
301: }
302: }
303: my ($answer,$loncaparev);
304: my @ids=¤t_machine_ids();
305: if (grep(/^\Q$lonhost\E$/,@ids)) {
306: $answer = $perlvar{'lonVersion'};
307: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
308: $loncaparev = $1;
309: }
310: } else {
311: $answer = &reply('serverloncaparev',$lonhost);
312: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
313: if ($caller eq 'loncron') {
314: my $protocol = $protocol{$lonhost};
315: $protocol = 'http' if ($protocol ne 'https');
316: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
317: my $request=new HTTP::Request('GET',$url);
318: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
319: unless ($response->is_error()) {
320: my $content = $response->content;
321: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
322: $loncaparev = $1;
323: }
324: }
325: } else {
326: $loncaparev = $loncaparevs{$lonhost};
327: }
328: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
329: $loncaparev = $1;
330: }
331: }
332: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
333: }
334: }
335:
336: sub get_server_homeID {
337: my ($hostname,$ignore_cache,$caller) = @_;
338: unless ($ignore_cache) {
339: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
340: if (defined($cached)) {
341: return $serverhomeID;
342: }
343: }
344: my $cachetime = 12*3600;
345: my $serverhomeID;
346: if ($caller eq 'loncron') {
347: my @machine_ids = &machine_ids($hostname);
348: foreach my $id (@machine_ids) {
349: my $response = &reply('serverhomeID',$id);
350: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
351: $serverhomeID = $response;
352: last;
353: }
354: }
355: if ($serverhomeID eq '') {
356: $serverhomeID = $machine_ids[-1];
357: }
358: } else {
359: $serverhomeID = $serverhomeIDs{$hostname};
360: }
361: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
362: }
363:
364: sub get_remote_globals {
365: my ($lonhost,$whathash,$ignore_cache) = @_;
366: my ($result,%returnhash,%whatneeded);
367: if (ref($whathash) eq 'HASH') {
368: foreach my $what (sort(keys(%{$whathash}))) {
369: my $hashid = $lonhost.'-'.$what;
370: my ($response,$cached);
371: unless ($ignore_cache) {
372: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
373: }
374: if (defined($cached)) {
375: $returnhash{$what} = $response;
376: } else {
377: $whatneeded{$what} = 1;
378: }
379: }
380: if (keys(%whatneeded) == 0) {
381: $result = 'ok';
382: } else {
383: my $requested = &freeze_escape(\%whatneeded);
384: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
385: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
386: ($rep eq 'unknown_cmd')) {
387: $result = $rep;
388: } else {
389: $result = 'ok';
390: my @pairs=split(/\&/,$rep);
391: foreach my $item (@pairs) {
392: my ($key,$value)=split(/=/,$item,2);
393: my $what = &unescape($key);
394: my $hashid = $lonhost.'-'.$what;
395: $returnhash{$what}=&thaw_unescape($value);
396: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
397: }
398: }
399: }
400: }
401: return ($result,\%returnhash);
402: }
403:
404: sub remote_devalidate_cache {
405: my ($lonhost,$cachekeys) = @_;
406: my $items;
407: return unless (ref($cachekeys) eq 'ARRAY');
408: my $cachestr = join('&',@{$cachekeys});
409: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
410: return $response;
411: }
412:
413: # -------------------------------------------------- Non-critical communication
414: sub subreply {
415: my ($cmd,$server)=@_;
416: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
417: #
418: # With loncnew process trimming, there's a timing hole between lonc server
419: # process exit and the master server picking up the listen on the AF_UNIX
420: # socket. In that time interval, a lock file will exist:
421:
422: my $lockfile=$peerfile.".lock";
423: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
424: sleep(0.1);
425: }
426: # At this point, either a loncnew parent is listening or an old lonc
427: # or loncnew child is listening so we can connect or everything's dead.
428: #
429: # We'll give the connection a few tries before abandoning it. If
430: # connection is not possible, we'll con_lost back to the client.
431: #
432: my $client;
433: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
434: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
435: Type => SOCK_STREAM,
436: Timeout => 10);
437: if ($client) {
438: last; # Connected!
439: } else {
440: &create_connection(&hostname($server),$server);
441: }
442: sleep(0.1); # Try again later if failed connection.
443: }
444: my $answer;
445: if ($client) {
446: print $client "sethost:$server:$cmd\n";
447: $answer=<$client>;
448: if (!$answer) { $answer="con_lost"; }
449: chomp($answer);
450: } else {
451: $answer = 'con_lost'; # Failed connection.
452: }
453: return $answer;
454: }
455:
456: sub reply {
457: my ($cmd,$server)=@_;
458: unless (defined(&hostname($server))) { return 'no_such_host'; }
459: my $answer=subreply($cmd,$server);
460: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
461: &logthis("<font color=\"blue\">WARNING:".
462: " $cmd to $server returned $answer</font>");
463: }
464: return $answer;
465: }
466:
467: # ----------------------------------------------------------- Send USR1 to lonc
468:
469: sub reconlonc {
470: my ($lonid) = @_;
471: if ($lonid) {
472: my $hostname = &hostname($lonid);
473: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
474: if ($hostname && -e $peerfile) {
475: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
476: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
477: Type => SOCK_STREAM,
478: Timeout => 10);
479: if ($client) {
480: print $client ("reset_retries\n");
481: my $answer=<$client>;
482: #reset just this one.
483: }
484: }
485: return;
486: }
487:
488: &logthis("Trying to reconnect lonc");
489: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
490: if (open(my $fh,"<",$loncfile)) {
491: my $loncpid=<$fh>;
492: chomp($loncpid);
493: if (kill 0 => $loncpid) {
494: &logthis("lonc at pid $loncpid responding, sending USR1");
495: kill USR1 => $loncpid;
496: sleep 1;
497: } else {
498: &logthis(
499: "<font color=\"blue\">WARNING:".
500: " lonc at pid $loncpid not responding, giving up</font>");
501: }
502: } else {
503: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
504: }
505: }
506:
507: # ------------------------------------------------------ Critical communication
508:
509: sub critical {
510: my ($cmd,$server)=@_;
511: unless (&hostname($server)) {
512: &logthis("<font color=\"blue\">WARNING:".
513: " Critical message to unknown server ($server)</font>");
514: return 'no_such_host';
515: }
516: my $answer=reply($cmd,$server);
517: if ($answer eq 'con_lost') {
518: &reconlonc($server);
519: my $answer=reply($cmd,$server);
520: if ($answer eq 'con_lost') {
521: my $now=time;
522: my $middlename=$cmd;
523: $middlename=substr($middlename,0,16);
524: $middlename=~s/\W//g;
525: my $dfilename=
526: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
527: $dumpcount++;
528: {
529: my $dfh;
530: if (open($dfh,">",$dfilename)) {
531: print $dfh "$cmd\n";
532: close($dfh);
533: }
534: }
535: sleep 1;
536: my $wcmd='';
537: {
538: my $dfh;
539: if (open($dfh,"<",$dfilename)) {
540: $wcmd=<$dfh>;
541: close($dfh);
542: }
543: }
544: chomp($wcmd);
545: if ($wcmd eq $cmd) {
546: &logthis("<font color=\"blue\">WARNING: ".
547: "Connection buffer $dfilename: $cmd</font>");
548: &logperm("D:$server:$cmd");
549: return 'con_delayed';
550: } else {
551: &logthis("<font color=\"red\">CRITICAL:"
552: ." Critical connection failed: $server $cmd</font>");
553: &logperm("F:$server:$cmd");
554: return 'con_failed';
555: }
556: }
557: }
558: return $answer;
559: }
560:
561: # ------------------------------------------- check if return value is an error
562:
563: sub error {
564: my ($result) = @_;
565: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
566: if ($2 == 2) { return undef; }
567: return $1;
568: }
569: return undef;
570: }
571:
572: sub convert_and_load_session_env {
573: my ($lonidsdir,$handle)=@_;
574: my @profile;
575: {
576: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
577: if (!$opened) {
578: return 0;
579: }
580: flock($idf,LOCK_SH);
581: @profile=<$idf>;
582: close($idf);
583: }
584: my %temp_env;
585: foreach my $line (@profile) {
586: if ($line !~ m/=/) {
587: return 0;
588: }
589: chomp($line);
590: my ($envname,$envvalue)=split(/=/,$line,2);
591: $temp_env{&unescape($envname)} = &unescape($envvalue);
592: }
593: unlink("$lonidsdir/$handle.id");
594: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
595: 0640)) {
596: %disk_env = %temp_env;
597: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
598: untie(%disk_env);
599: }
600: return 1;
601: }
602:
603: # ------------------------------------------- Transfer profile into environment
604: my $env_loaded;
605: sub transfer_profile_to_env {
606: my ($lonidsdir,$handle,$force_transfer) = @_;
607: if (!$force_transfer && $env_loaded) { return; }
608:
609: if (!defined($lonidsdir)) {
610: $lonidsdir = $perlvar{'lonIDsDir'};
611: }
612: if (!defined($handle)) {
613: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
614: }
615:
616: my $convert;
617: {
618: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
619: if (!$opened) {
620: return;
621: }
622: flock($idf,LOCK_SH);
623: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
624: &GDBM_READER(),0640)) {
625: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
626: untie(%disk_env);
627: } else {
628: $convert = 1;
629: }
630: }
631: if ($convert) {
632: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
633: &logthis("Failed to load session, or convert session.");
634: }
635: }
636:
637: my %remove;
638: while ( my $envname = each(%env) ) {
639: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
640: if ($time < time-300) {
641: $remove{$key}++;
642: }
643: }
644: }
645:
646: $env{'user.environment'} = "$lonidsdir/$handle.id";
647: $env_loaded=1;
648: foreach my $expired_key (keys(%remove)) {
649: &delenv($expired_key);
650: }
651: }
652:
653: # ---------------------------------------------------- Check for valid session
654: sub check_for_valid_session {
655: my ($r,$name,$userhashref,$domref) = @_;
656: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
657: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
658: if ($name eq 'lonDAV') {
659: $lonidsdir=$r->dir_config('lonDAVsessDir');
660: } else {
661: $lonidsdir=$r->dir_config('lonIDsDir');
662: if ($name eq '') {
663: $name = 'lonID';
664: }
665: }
666: if ($name eq 'lonID') {
667: $secure = 'lonSID';
668: $linkname = 'lonLinkID';
669: $pubname = 'lonPubID';
670: if (exists($cookies{$secure})) {
671: $lonid=$cookies{$secure};
672: } elsif (exists($cookies{$name})) {
673: $lonid=$cookies{$name};
674: } elsif (exists($cookies{$linkname})) {
675: $lonid=$cookies{$linkname};
676: } elsif (exists($cookies{$pubname})) {
677: $lonid=$cookies{$pubname};
678: }
679: } else {
680: $lonid=$cookies{$name};
681: }
682: return undef if (!$lonid);
683:
684: my $handle=&LONCAPA::clean_handle($lonid->value);
685: if (-l "$lonidsdir/$handle.id") {
686: my $link = readlink("$lonidsdir/$handle.id");
687: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
688: $handle = $1;
689: }
690: }
691: if (!-e "$lonidsdir/$handle.id") {
692: if ((ref($domref)) && ($name eq 'lonID') &&
693: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
694: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
695: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
696: $$domref = $possudom;
697: }
698: }
699: return undef;
700: }
701:
702: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
703: return undef if (!$opened);
704:
705: flock($idf,LOCK_SH);
706: my %disk_env;
707: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
708: &GDBM_READER(),0640)) {
709: return undef;
710: }
711:
712: if (!defined($disk_env{'user.name'})
713: || !defined($disk_env{'user.domain'})) {
714: return undef;
715: }
716:
717: if (ref($userhashref) eq 'HASH') {
718: $userhashref->{'name'} = $disk_env{'user.name'};
719: $userhashref->{'domain'} = $disk_env{'user.domain'};
720: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
721: if ($userhashref->{'lti'}) {
722: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
723: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
724: }
725: }
726:
727: return $handle;
728: }
729:
730: sub timed_flock {
731: my ($file,$lock_type) = @_;
732: my $failed=0;
733: eval {
734: local $SIG{__DIE__}='DEFAULT';
735: local $SIG{ALRM}=sub {
736: $failed=1;
737: die("failed lock");
738: };
739: alarm(13);
740: flock($file,$lock_type);
741: alarm(0);
742: };
743: if ($failed) {
744: return undef;
745: } else {
746: return 1;
747: }
748: }
749:
750: sub get_sessionfile_vars {
751: my ($handle,$lonidsdir,$storearr) = @_;
752: my %returnhash;
753: unless (ref($storearr) eq 'ARRAY') {
754: return %returnhash;
755: }
756: if (-l "$lonidsdir/$handle.id") {
757: my $link = readlink("$lonidsdir/$handle.id");
758: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
759: $handle = $1;
760: }
761: }
762: if ((-e "$lonidsdir/$handle.id") &&
763: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
764: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
765: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
766: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
767: flock($idf,LOCK_SH);
768: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
769: &GDBM_READER(),0640)) {
770: foreach my $item (@{$storearr}) {
771: $returnhash{$item} = $disk_env{$item};
772: }
773: untie(%disk_env);
774: }
775: }
776: }
777: }
778: return %returnhash;
779: }
780:
781: # ---------------------------------------------------------- Append Environment
782:
783: sub appenv {
784: my ($newenv,$roles) = @_;
785: if (ref($newenv) eq 'HASH') {
786: foreach my $key (keys(%{$newenv})) {
787: my $refused = 0;
788: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
789: $refused = 1;
790: if (ref($roles) eq 'ARRAY') {
791: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
792: if (grep(/^\Q$role\E$/,@{$roles})) {
793: $refused = 0;
794: }
795: }
796: }
797: if ($refused) {
798: &logthis("<font color=\"blue\">WARNING: ".
799: "Attempt to modify environment ".$key." to ".$newenv->{$key}
800: .'</font>');
801: delete($newenv->{$key});
802: } else {
803: $env{$key}=$newenv->{$key};
804: }
805: }
806: my $lonids = $perlvar{'lonIDsDir'};
807: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
808: my $opened = open(my $env_file,'+<',$env{'user.environment'});
809: if ($opened
810: && &timed_flock($env_file,LOCK_EX)
811: &&
812: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
813: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
814: while (my ($key,$value) = each(%{$newenv})) {
815: $disk_env{$key} = $value;
816: }
817: untie(%disk_env);
818: }
819: }
820: }
821: return 'ok';
822: }
823: # ----------------------------------------------------- Delete from Environment
824:
825: sub delenv {
826: my ($delthis,$regexp,$roles) = @_;
827: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
828: my $refused = 1;
829: if (ref($roles) eq 'ARRAY') {
830: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
831: if (grep(/^\Q$role\E$/,@{$roles})) {
832: $refused = 0;
833: }
834: }
835: if ($refused) {
836: &logthis("<font color=\"blue\">WARNING: ".
837: "Attempt to delete from environment ".$delthis);
838: return 'error';
839: }
840: }
841: my $opened = open(my $env_file,'+<',$env{'user.environment'});
842: if ($opened
843: && &timed_flock($env_file,LOCK_EX)
844: &&
845: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
846: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
847: foreach my $key (keys(%disk_env)) {
848: if ($regexp) {
849: if ($key=~/^$delthis/) {
850: delete($env{$key});
851: delete($disk_env{$key});
852: }
853: } else {
854: if ($key=~/^\Q$delthis\E/) {
855: delete($env{$key});
856: delete($disk_env{$key});
857: }
858: }
859: }
860: untie(%disk_env);
861: }
862: return 'ok';
863: }
864:
865: sub get_env_multiple {
866: my ($name) = @_;
867: my @values;
868: if (defined($env{$name})) {
869: # exists is it an array
870: if (ref($env{$name})) {
871: @values=@{ $env{$name} };
872: } else {
873: $values[0]=$env{$name};
874: }
875: }
876: return(@values);
877: }
878:
879: # ------------------------------------------------------------------- Locking
880:
881: sub set_lock {
882: my ($text)=@_;
883: $locknum++;
884: my $id=$$.'-'.$locknum;
885: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
886: 'session.lock.'.$id => $text});
887: return $id;
888: }
889:
890: sub get_locks {
891: my $num=0;
892: my %texts=();
893: foreach my $lock (split(/\,/,$env{'session.locks'})) {
894: if ($lock=~/\w/) {
895: $num++;
896: $texts{$lock}=$env{'session.lock.'.$lock};
897: }
898: }
899: return ($num,%texts);
900: }
901:
902: sub remove_lock {
903: my ($id)=@_;
904: my $newlocks='';
905: foreach my $lock (split(/\,/,$env{'session.locks'})) {
906: if (($lock=~/\w/) && ($lock ne $id)) {
907: $newlocks.=','.$lock;
908: }
909: }
910: &appenv({'session.locks' => $newlocks});
911: &delenv('session.lock.'.$id);
912: }
913:
914: sub remove_all_locks {
915: my $activelocks=$env{'session.locks'};
916: foreach my $lock (split(/\,/,$env{'session.locks'})) {
917: if ($lock=~/\w/) {
918: &remove_lock($lock);
919: }
920: }
921: }
922:
923:
924: # ------------------------------------------ Find out current server userload
925: sub userload {
926: my $numusers=0;
927: {
928: opendir(LONIDS,$perlvar{'lonIDsDir'});
929: my $filename;
930: my $curtime=time;
931: while ($filename=readdir(LONIDS)) {
932: next if ($filename eq '.' || $filename eq '..');
933: next if ($filename =~ /publicuser_\d+\.id/);
934: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
935: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
936: if ($curtime-$mtime < 1800) { $numusers++; }
937: }
938: closedir(LONIDS);
939: }
940: my $userloadpercent=0;
941: my $maxuserload=$perlvar{'lonUserLoadLim'};
942: if ($maxuserload) {
943: $userloadpercent=100*$numusers/$maxuserload;
944: }
945: $userloadpercent=sprintf("%.2f",$userloadpercent);
946: return $userloadpercent;
947: }
948:
949: # ------------------------------ Find server with least workload from spare.tab
950:
951: sub spareserver {
952: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
953: my $spare_server;
954: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
955: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
956: : $userloadpercent;
957: my ($uint_dom,$remotesessions);
958: if (($udom ne '') && (&domain($udom) ne '')) {
959: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
960: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
961: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
962: $remotesessions = $udomdefaults{'remotesessions'};
963: }
964: my $spareshash = &this_host_spares($udom);
965: if (ref($spareshash) eq 'HASH') {
966: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
967: foreach my $try_server (@{ $spareshash->{'primary'} }) {
968: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
969: $try_server));
970: ($spare_server, $lowest_load) =
971: &compare_server_load($try_server, $spare_server, $lowest_load);
972: }
973: }
974:
975: my $found_server = ($spare_server ne '' && $lowest_load < 100);
976:
977: if (!$found_server) {
978: if (ref($spareshash->{'default'}) eq 'ARRAY') {
979: foreach my $try_server (@{ $spareshash->{'default'} }) {
980: next unless (&spare_can_host($udom,$uint_dom,
981: $remotesessions,$try_server));
982: ($spare_server, $lowest_load) =
983: &compare_server_load($try_server, $spare_server, $lowest_load);
984: }
985: }
986: }
987: }
988:
989: if (!$want_server_name) {
990: my $protocol = 'http';
991: if ($protocol{$spare_server} eq 'https') {
992: $protocol = $protocol{$spare_server};
993: }
994: if (defined($spare_server)) {
995: my $hostname = &hostname($spare_server);
996: if (defined($hostname)) {
997: $spare_server = $protocol.'://'.$hostname;
998: }
999: }
1000: }
1001: return $spare_server;
1002: }
1003:
1004: sub compare_server_load {
1005: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1006:
1007: if ($required) {
1008: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1009: my $remoterev = &get_server_loncaparev(undef,$try_server);
1010: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1011: if (($major eq '' && $minor eq '') ||
1012: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1013: return ($spare_server,$lowest_load);
1014: }
1015: }
1016:
1017: my $loadans = &reply('load', $try_server);
1018: my $userloadans = &reply('userload',$try_server);
1019:
1020: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1021: return ($spare_server, $lowest_load); #didn't get a number from the server
1022: }
1023:
1024: my $load;
1025: if ($loadans =~ /\d/) {
1026: if ($userloadans =~ /\d/) {
1027: #both are numbers, pick the bigger one
1028: $load = ($loadans > $userloadans) ? $loadans
1029: : $userloadans;
1030: } else {
1031: $load = $loadans;
1032: }
1033: } else {
1034: $load = $userloadans;
1035: }
1036:
1037: if (($load =~ /\d/) && ($load < $lowest_load)) {
1038: $spare_server = $try_server;
1039: $lowest_load = $load;
1040: }
1041: return ($spare_server,$lowest_load);
1042: }
1043:
1044: # --------------------------- ask offload servers if user already has a session
1045: sub find_existing_session {
1046: my ($udom,$uname) = @_;
1047: my $spareshash = &this_host_spares($udom);
1048: if (ref($spareshash) eq 'HASH') {
1049: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1050: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1051: return $try_server if (&has_user_session($try_server, $udom, $uname));
1052: }
1053: }
1054: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1055: foreach my $try_server (@{ $spareshash->{'default'} }) {
1056: return $try_server if (&has_user_session($try_server, $udom, $uname));
1057: }
1058: }
1059: }
1060: return;
1061: }
1062:
1063: # check if user's browser sent load balancer cookie and server still has session
1064: # and is not overloaded.
1065: sub check_for_balancer_cookie {
1066: my ($r,$update_mtime) = @_;
1067: my ($otherserver,$cookie);
1068: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1069: if (exists($cookies{'balanceID'})) {
1070: my $balid = $cookies{'balanceID'};
1071: $cookie=&LONCAPA::clean_handle($balid->value);
1072: my $balancedir=$r->dir_config('lonBalanceDir');
1073: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1074: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1075: my ($possudom,$possuname) = ($1,$2);
1076: my $has_session = 0;
1077: if ((&domain($possudom) ne '') &&
1078: (&homeserver($possuname,$possudom) ne 'no_host')) {
1079: my $try_server;
1080: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1081: if ($opened) {
1082: flock($idf,LOCK_SH);
1083: while (my $line = <$idf>) {
1084: chomp($line);
1085: if (&hostname($line) ne '') {
1086: $try_server = $line;
1087: last;
1088: }
1089: }
1090: close($idf);
1091: if (($try_server) &&
1092: (&has_user_session($try_server,$possudom,$possuname))) {
1093: my $lowest_load = 30000;
1094: ($otherserver,$lowest_load) =
1095: &compare_server_load($try_server,undef,$lowest_load);
1096: if ($otherserver ne '' && $lowest_load < 100) {
1097: $has_session = 1;
1098: } else {
1099: undef($otherserver);
1100: }
1101: }
1102: }
1103: }
1104: if ($has_session) {
1105: if ($update_mtime) {
1106: my $atime = my $mtime = time;
1107: utime($atime,$mtime,"$balancedir/$cookie.id");
1108: }
1109: } else {
1110: unlink("$balancedir/$cookie.id");
1111: }
1112: }
1113: }
1114: }
1115: return ($otherserver,$cookie);
1116: }
1117:
1118: sub delbalcookie {
1119: my ($cookie,$balancer) =@_;
1120: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1121: my ($udom,$uname) = ($1,$2);
1122: my $uprimary_id = &domain($udom,'primary');
1123: my $uintdom = &internet_dom($uprimary_id);
1124: my $intdom = &internet_dom($balancer);
1125: my $serverhomedom = &host_domain($balancer);
1126: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1127: return &reply("delbalcookie:$cookie",$balancer);
1128: }
1129: }
1130: }
1131:
1132: # -------------------------------- ask if server already has a session for user
1133: sub has_user_session {
1134: my ($lonid,$udom,$uname) = @_;
1135: my $result = &reply(join(':','userhassession',
1136: map {&escape($_)} ($udom,$uname)),$lonid);
1137: return 1 if ($result eq 'ok');
1138:
1139: return 0;
1140: }
1141:
1142: # --------- determine least loaded server in a user's domain which allows login
1143:
1144: sub choose_server {
1145: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1146: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1147: my %servers = &get_servers($udom);
1148: my $lowest_load = 30000;
1149: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1150: if ($skiploadbal) {
1151: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1152: unless (defined($cached)) {
1153: my $cachetime = 60*60*24;
1154: my %domconfig =
1155: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1156: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1157: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1158: $cachetime);
1159: }
1160: }
1161: }
1162: foreach my $lonhost (keys(%servers)) {
1163: if ($skiploadbal) {
1164: if (ref($balancers) eq 'HASH') {
1165: next if (exists($balancers->{$lonhost}));
1166: }
1167: }
1168: my $loginvia;
1169: if ($checkloginvia) {
1170: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1171: if ($loginvia) {
1172: my ($server,$path) = split(/:/,$loginvia);
1173: ($login_host, $lowest_load) =
1174: &compare_server_load($server, $login_host, $lowest_load, $required);
1175: if ($login_host eq $server) {
1176: $portal_path = $path;
1177: $isredirect = 1;
1178: }
1179: } else {
1180: ($login_host, $lowest_load) =
1181: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1182: if ($login_host eq $lonhost) {
1183: $portal_path = '';
1184: $isredirect = '';
1185: }
1186: }
1187: } else {
1188: ($login_host, $lowest_load) =
1189: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1190: }
1191: }
1192: if ($login_host ne '') {
1193: $hostname = &hostname($login_host);
1194: }
1195: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1196: }
1197:
1198: # --------------------------------------------- Try to change a user's password
1199:
1200: sub changepass {
1201: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1202: $currentpass = &escape($currentpass);
1203: $newpass = &escape($newpass);
1204: my $lonhost = $perlvar{'lonHostID'};
1205: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1206: $server);
1207: if (! $answer) {
1208: &logthis("No reply on password change request to $server ".
1209: "by $uname in domain $udom.");
1210: } elsif ($answer =~ "^ok") {
1211: &logthis("$uname in $udom successfully changed their password ".
1212: "on $server.");
1213: } elsif ($answer =~ "^pwchange_failure") {
1214: &logthis("$uname in $udom was unable to change their password ".
1215: "on $server. The action was blocked by either lcpasswd ".
1216: "or pwchange");
1217: } elsif ($answer =~ "^non_authorized") {
1218: &logthis("$uname in $udom did not get their password correct when ".
1219: "attempting to change it on $server.");
1220: } elsif ($answer =~ "^auth_mode_error") {
1221: &logthis("$uname in $udom attempted to change their password despite ".
1222: "not being locally or internally authenticated on $server.");
1223: } elsif ($answer =~ "^unknown_user") {
1224: &logthis("$uname in $udom attempted to change their password ".
1225: "on $server but were unable to because $server is not ".
1226: "their home server.");
1227: } elsif ($answer =~ "^refused") {
1228: &logthis("$server refused to change $uname in $udom password because ".
1229: "it was sent an unencrypted request to change the password.");
1230: } elsif ($answer =~ "invalid_client") {
1231: &logthis("$server refused to change $uname in $udom password because ".
1232: "it was a reset by e-mail originating from an invalid server.");
1233: }
1234: return $answer;
1235: }
1236:
1237: # ----------------------- Try to determine user's current authentication scheme
1238:
1239: sub queryauthenticate {
1240: my ($uname,$udom)=@_;
1241: my $uhome=&homeserver($uname,$udom);
1242: if (!$uhome) {
1243: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1244: return 'no_host';
1245: }
1246: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1247: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1248: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1249: }
1250: return $answer;
1251: }
1252:
1253: # --------- Try to authenticate user from domain's lib servers (first this one)
1254:
1255: sub authenticate {
1256: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1257: $upass=&escape($upass);
1258: $uname= &LONCAPA::clean_username($uname);
1259: my $uhome=&homeserver($uname,$udom,1);
1260: my $newhome;
1261: if ((!$uhome) || ($uhome eq 'no_host')) {
1262: # Maybe the machine was offline and only re-appeared again recently?
1263: &reconlonc();
1264: # One more
1265: $uhome=&homeserver($uname,$udom,1);
1266: if (($uhome eq 'no_host') && $checkdefauth) {
1267: if (defined(&domain($udom,'primary'))) {
1268: $newhome=&domain($udom,'primary');
1269: }
1270: if ($newhome ne '') {
1271: $uhome = $newhome;
1272: }
1273: }
1274: if ((!$uhome) || ($uhome eq 'no_host')) {
1275: &logthis("User $uname at $udom is unknown in authenticate");
1276: return 'no_host';
1277: }
1278: }
1279: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1280: if ($answer eq 'authorized') {
1281: if ($newhome) {
1282: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1283: return 'no_account_on_host';
1284: } else {
1285: &logthis("User $uname at $udom authorized by $uhome");
1286: return $uhome;
1287: }
1288: }
1289: if ($answer eq 'non_authorized') {
1290: &logthis("User $uname at $udom rejected by $uhome");
1291: return 'no_host';
1292: }
1293: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1294: return 'no_host';
1295: }
1296:
1297: sub can_host_session {
1298: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1299: my $canhost = 1;
1300: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1301: if (ref($remotesessions) eq 'HASH') {
1302: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1303: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1304: $canhost = 0;
1305: } else {
1306: $canhost = 1;
1307: }
1308: }
1309: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1310: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1311: $canhost = 1;
1312: } else {
1313: $canhost = 0;
1314: }
1315: }
1316: if ($canhost) {
1317: if ($remotesessions->{'version'} ne '') {
1318: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1319: if ($reqmajor ne '' && $reqminor ne '') {
1320: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1321: my $major = $1;
1322: my $minor = $2;
1323: if (($major < $reqmajor ) ||
1324: (($major == $reqmajor) && ($minor < $reqminor))) {
1325: $canhost = 0;
1326: }
1327: } else {
1328: $canhost = 0;
1329: }
1330: }
1331: }
1332: }
1333: }
1334: if ($canhost) {
1335: if (ref($hostedsessions) eq 'HASH') {
1336: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1337: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1338: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1339: if (($uint_dom ne '') &&
1340: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1341: $canhost = 0;
1342: } else {
1343: $canhost = 1;
1344: }
1345: }
1346: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1347: if (($uint_dom ne '') &&
1348: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1349: $canhost = 1;
1350: } else {
1351: $canhost = 0;
1352: }
1353: }
1354: }
1355: }
1356: return $canhost;
1357: }
1358:
1359: sub spare_can_host {
1360: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1361: my $canhost=1;
1362: my $try_server_hostname = &hostname($try_server);
1363: my $serverhomeID = &get_server_homeID($try_server_hostname);
1364: my $serverhomedom = &host_domain($serverhomeID);
1365: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1366: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1367: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1368: $canhost = 0;
1369: }
1370: }
1371: if (($canhost) && ($uint_dom)) {
1372: my @intdoms;
1373: my $internet_names = &get_internet_names($try_server);
1374: if (ref($internet_names) eq 'ARRAY') {
1375: @intdoms = @{$internet_names};
1376: }
1377: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1378: my $remoterev = &get_server_loncaparev(undef,$try_server);
1379: $canhost = &can_host_session($udom,$try_server,$remoterev,
1380: $remotesessions,
1381: $defdomdefaults{'hostedsessions'});
1382: }
1383: }
1384: return $canhost;
1385: }
1386:
1387: sub this_host_spares {
1388: my ($dom) = @_;
1389: my ($dom_in_use,$lonhost_in_use,$result);
1390: my @hosts = ¤t_machine_ids();
1391: foreach my $lonhost (@hosts) {
1392: if (&host_domain($lonhost) eq $dom) {
1393: $dom_in_use = $dom;
1394: $lonhost_in_use = $lonhost;
1395: last;
1396: }
1397: }
1398: if ($dom_in_use ne '') {
1399: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1400: }
1401: if (ref($result) ne 'HASH') {
1402: $lonhost_in_use = $perlvar{'lonHostID'};
1403: $dom_in_use = &host_domain($lonhost_in_use);
1404: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1405: if (ref($result) ne 'HASH') {
1406: $result = \%spareid;
1407: }
1408: }
1409: return $result;
1410: }
1411:
1412: sub spares_for_offload {
1413: my ($dom_in_use,$lonhost_in_use) = @_;
1414: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1415: if (defined($cached)) {
1416: return $result;
1417: } else {
1418: my $cachetime = 60*60*24;
1419: my %domconfig =
1420: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1421: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1422: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1423: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1424: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1425: }
1426: }
1427: }
1428: }
1429: return;
1430: }
1431:
1432: sub get_lonbalancer_config {
1433: my ($servers) = @_;
1434: my ($currbalancer,$currtargets);
1435: if (ref($servers) eq 'HASH') {
1436: foreach my $server (keys(%{$servers})) {
1437: my %what = (
1438: spareid => 1,
1439: perlvar => 1,
1440: );
1441: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1442: if ($result eq 'ok') {
1443: if (ref($returnhash) eq 'HASH') {
1444: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1445: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1446: $currbalancer = $server;
1447: $currtargets = {};
1448: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1449: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1450: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1451: }
1452: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1453: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1454: }
1455: }
1456: last;
1457: }
1458: }
1459: }
1460: }
1461: }
1462: }
1463: return ($currbalancer,$currtargets);
1464: }
1465:
1466: sub check_loadbalancing {
1467: my ($uname,$udom,$caller) = @_;
1468: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1469: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1470: my $lonhost = $perlvar{'lonHostID'};
1471: my @hosts = ¤t_machine_ids();
1472: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1473: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1474: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1475: my $serverhomedom = &host_domain($lonhost);
1476: my $domneedscache;
1477: my $cachetime = 60*60*24;
1478:
1479: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1480: $dom_in_use = $udom;
1481: $homeintdom = 1;
1482: } else {
1483: $dom_in_use = $serverhomedom;
1484: }
1485: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1486: unless (defined($cached)) {
1487: my %domconfig =
1488: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1489: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1490: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1491: } else {
1492: $domneedscache = $dom_in_use;
1493: }
1494: }
1495: if (ref($result) eq 'HASH') {
1496: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1497: &check_balancer_result($result,@hosts);
1498: if ($is_balancer) {
1499: if (ref($currrules) eq 'HASH') {
1500: if ($homeintdom) {
1501: if ($uname ne '') {
1502: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1503: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1504: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1505: $rule_in_effect = $currrules->{'_LC_author'};
1506: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1507: $rule_in_effect = $currrules->{'_LC_adv'}
1508: }
1509: }
1510: if ($rule_in_effect eq '') {
1511: my %userenv = &userenvironment($udom,$uname,'inststatus');
1512: if ($userenv{'inststatus'} ne '') {
1513: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1514: my ($othertitle,$usertypes,$types) =
1515: &Apache::loncommon::sorted_inst_types($udom);
1516: if (ref($types) eq 'ARRAY') {
1517: foreach my $type (@{$types}) {
1518: if (grep(/^\Q$type\E$/,@statuses)) {
1519: if (exists($currrules->{$type})) {
1520: $rule_in_effect = $currrules->{$type};
1521: }
1522: }
1523: }
1524: }
1525: } else {
1526: if (exists($currrules->{'default'})) {
1527: $rule_in_effect = $currrules->{'default'};
1528: }
1529: }
1530: }
1531: } else {
1532: if (exists($currrules->{'default'})) {
1533: $rule_in_effect = $currrules->{'default'};
1534: }
1535: }
1536: } else {
1537: if ($currrules->{'_LC_external'} ne '') {
1538: $rule_in_effect = $currrules->{'_LC_external'};
1539: }
1540: }
1541: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1542: $uname,$udom);
1543: }
1544: }
1545: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1546: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1547: unless (defined($cached)) {
1548: my %domconfig =
1549: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1550: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1551: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1552: } else {
1553: $domneedscache = $serverhomedom;
1554: }
1555: }
1556: if (ref($result) eq 'HASH') {
1557: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1558: &check_balancer_result($result,@hosts);
1559: if ($is_balancer) {
1560: if (ref($currrules) eq 'HASH') {
1561: if ($currrules->{'_LC_internetdom'} ne '') {
1562: $rule_in_effect = $currrules->{'_LC_internetdom'};
1563: }
1564: }
1565: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1566: $uname,$udom);
1567: }
1568: } else {
1569: if ($perlvar{'lonBalancer'} eq 'yes') {
1570: $is_balancer = 1;
1571: $offloadto = &this_host_spares($dom_in_use);
1572: }
1573: unless (defined($cached)) {
1574: $domneedscache = $serverhomedom;
1575: }
1576: }
1577: } else {
1578: if ($perlvar{'lonBalancer'} eq 'yes') {
1579: $is_balancer = 1;
1580: $offloadto = &this_host_spares($dom_in_use);
1581: }
1582: unless (defined($cached)) {
1583: $domneedscache = $serverhomedom;
1584: }
1585: }
1586: if ($domneedscache) {
1587: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1588: }
1589: if ($is_balancer) {
1590: my $lowest_load = 30000;
1591: if (ref($offloadto) eq 'HASH') {
1592: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1593: foreach my $try_server (@{$offloadto->{'primary'}}) {
1594: ($otherserver,$lowest_load) =
1595: &compare_server_load($try_server,$otherserver,$lowest_load);
1596: }
1597: }
1598: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1599:
1600: if (!$found_server) {
1601: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1602: foreach my $try_server (@{$offloadto->{'default'}}) {
1603: ($otherserver,$lowest_load) =
1604: &compare_server_load($try_server,$otherserver,$lowest_load);
1605: }
1606: }
1607: }
1608: } elsif (ref($offloadto) eq 'ARRAY') {
1609: if (@{$offloadto} == 1) {
1610: $otherserver = $offloadto->[0];
1611: } elsif (@{$offloadto} > 1) {
1612: foreach my $try_server (@{$offloadto}) {
1613: ($otherserver,$lowest_load) =
1614: &compare_server_load($try_server,$otherserver,$lowest_load);
1615: }
1616: }
1617: }
1618: unless ($caller eq 'login') {
1619: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1620: $is_balancer = 0;
1621: if ($uname ne '' && $udom ne '') {
1622: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1623: &appenv({'user.loadbalexempt' => $lonhost,
1624: 'user.loadbalcheck.time' => time});
1625: }
1626: }
1627: }
1628: }
1629: unless ($homeintdom) {
1630: undef($setcookie);
1631: }
1632: }
1633: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1634: }
1635:
1636: sub check_balancer_result {
1637: my ($result,@hosts) = @_;
1638: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1639: if (ref($result) eq 'HASH') {
1640: if ($result->{'lonhost'} ne '') {
1641: my $currbalancer = $result->{'lonhost'};
1642: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1643: $is_balancer = 1;
1644: $currtargets = $result->{'targets'};
1645: $currrules = $result->{'rules'};
1646: $dom_balancers = $currbalancer;
1647: }
1648: $dom_balancers = $currbalancer;
1649: } else {
1650: if (keys(%{$result})) {
1651: foreach my $key (keys(%{$result})) {
1652: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1653: (ref($result->{$key}) eq 'HASH')) {
1654: $is_balancer = 1;
1655: $currrules = $result->{$key}{'rules'};
1656: $currtargets = $result->{$key}{'targets'};
1657: $setcookie = $result->{$key}{'cookie'};
1658: last;
1659: }
1660: }
1661: $dom_balancers = join(',',sort(keys(%{$result})));
1662: }
1663: }
1664: }
1665: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1666: }
1667:
1668: sub get_loadbalancer_targets {
1669: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1670: my $offloadto;
1671: if ($rule_in_effect eq 'none') {
1672: return [$perlvar{'lonHostID'}];
1673: } elsif ($rule_in_effect eq '') {
1674: $offloadto = $currtargets;
1675: } else {
1676: if ($rule_in_effect eq 'homeserver') {
1677: my $homeserver = &homeserver($uname,$udom);
1678: if ($homeserver ne 'no_host') {
1679: $offloadto = [$homeserver];
1680: }
1681: } elsif ($rule_in_effect eq 'externalbalancer') {
1682: my %domconfig =
1683: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1684: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1685: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1686: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1687: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1688: }
1689: }
1690: } else {
1691: my %servers = &internet_dom_servers($udom);
1692: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1693: if (&hostname($remotebalancer) ne '') {
1694: $offloadto = [$remotebalancer];
1695: }
1696: }
1697: } elsif (&hostname($rule_in_effect) ne '') {
1698: $offloadto = [$rule_in_effect];
1699: }
1700: }
1701: return $offloadto;
1702: }
1703:
1704: sub internet_dom_servers {
1705: my ($dom) = @_;
1706: my (%uniqservers,%servers);
1707: my $primaryserver = &hostname(&domain($dom,'primary'));
1708: my @machinedoms = &machine_domains($primaryserver);
1709: foreach my $mdom (@machinedoms) {
1710: my %currservers = %servers;
1711: my %server = &get_servers($mdom);
1712: %servers = (%currservers,%server);
1713: }
1714: my %by_hostname;
1715: foreach my $id (keys(%servers)) {
1716: push(@{$by_hostname{$servers{$id}}},$id);
1717: }
1718: foreach my $hostname (sort(keys(%by_hostname))) {
1719: if (@{$by_hostname{$hostname}} > 1) {
1720: my $match = 0;
1721: foreach my $id (@{$by_hostname{$hostname}}) {
1722: if (&host_domain($id) eq $dom) {
1723: $uniqservers{$id} = $hostname;
1724: $match = 1;
1725: }
1726: }
1727: unless ($match) {
1728: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1729: }
1730: } else {
1731: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1732: }
1733: }
1734: return %uniqservers;
1735: }
1736:
1737: sub trusted_domains {
1738: my ($cmdtype,$calldom) = @_;
1739: my ($trusted,$untrusted);
1740: if (&domain($calldom) eq '') {
1741: return ($trusted,$untrusted);
1742: }
1743: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|domroles|catalog|reqcrs|msg)$/) {
1744: return ($trusted,$untrusted);
1745: }
1746: my $callprimary = &domain($calldom,'primary');
1747: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1748: if ($intcalldom eq '') {
1749: return ($trusted,$untrusted);
1750: }
1751:
1752: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1753: unless (defined($cached)) {
1754: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1755: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1756: $trustconfig = $domconfig{'trust'};
1757: }
1758: if (ref($trustconfig)) {
1759: my (%possexc,%possinc,@allexc,@allinc);
1760: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1761: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1762: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1763: }
1764: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1765: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1766: }
1767: }
1768: if (keys(%possexc)) {
1769: if (keys(%possinc)) {
1770: foreach my $key (sort(keys(%possexc))) {
1771: next if ($key eq $intcalldom);
1772: unless ($possinc{$key}) {
1773: push(@allexc,$key);
1774: }
1775: }
1776: } else {
1777: @allexc = sort(keys(%possexc));
1778: }
1779: }
1780: if (keys(%possinc)) {
1781: $possinc{$intcalldom} = 1;
1782: @allinc = sort(keys(%possinc));
1783: }
1784: if ((@allexc > 0) || (@allinc > 0)) {
1785: my %doms_by_intdom;
1786: my %allintdoms = &all_host_intdom();
1787: my %alldoms = &all_host_domain();
1788: foreach my $key (%allintdoms) {
1789: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1790: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1791: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1792: }
1793: } else {
1794: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1795: }
1796: }
1797: foreach my $exc (@allexc) {
1798: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1799: $untrusted = $doms_by_intdom{$exc};
1800: }
1801: }
1802: foreach my $inc (@allinc) {
1803: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1804: $trusted = $doms_by_intdom{$inc};
1805: }
1806: }
1807: }
1808: }
1809: return ($trusted,$untrusted);
1810: }
1811:
1812: sub will_trust {
1813: my ($cmdtype,$domain,$possdom) = @_;
1814: return 1 if ($domain eq $possdom);
1815: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1816: my $willtrust;
1817: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1818: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1819: $willtrust = 1;
1820: }
1821: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1822: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1823: $willtrust = 1;
1824: }
1825: } else {
1826: $willtrust = 1;
1827: }
1828: return $willtrust;
1829: }
1830:
1831: # ---------------------- Find the homebase for a user from domain's lib servers
1832:
1833: my %homecache;
1834: sub homeserver {
1835: my ($uname,$udom,$ignoreBadCache)=@_;
1836: my $index="$uname:$udom";
1837:
1838: if (exists($homecache{$index})) { return $homecache{$index}; }
1839:
1840: my %servers = &get_servers($udom,'library');
1841: foreach my $tryserver (keys(%servers)) {
1842: next if ($ignoreBadCache ne 'true' &&
1843: exists($badServerCache{$tryserver}));
1844:
1845: my $answer=reply("home:$udom:$uname",$tryserver);
1846: if ($answer eq 'found') {
1847: delete($badServerCache{$tryserver});
1848: return $homecache{$index}=$tryserver;
1849: } elsif ($answer eq 'no_host') {
1850: $badServerCache{$tryserver}=1;
1851: }
1852: }
1853: return 'no_host';
1854: }
1855:
1856: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1857:
1858: sub idget {
1859: my ($udom,$idsref,$namespace)=@_;
1860: my %returnhash=();
1861: my @ids=();
1862: if (ref($idsref) eq 'ARRAY') {
1863: @ids = @{$idsref};
1864: } else {
1865: return %returnhash;
1866: }
1867: if ($namespace eq '') {
1868: $namespace = 'ids';
1869: }
1870:
1871: my %servers = &get_servers($udom,'library');
1872: foreach my $tryserver (keys(%servers)) {
1873: my $idlist=join('&', map { &escape($_); } @ids);
1874: if ($namespace eq 'ids') {
1875: $idlist=~tr/A-Z/a-z/;
1876: }
1877: my $reply;
1878: if ($namespace eq 'ids') {
1879: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1880: } else {
1881: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1882: }
1883: my @answer=();
1884: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1885: @answer=split(/\&/,$reply);
1886: } ;
1887: my $i;
1888: for ($i=0;$i<=$#ids;$i++) {
1889: if ($answer[$i]) {
1890: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1891: }
1892: }
1893: }
1894: return %returnhash;
1895: }
1896:
1897: # ------------------------------------- Find the IDs behind a list of usernames
1898:
1899: sub idrget {
1900: my ($udom,@unames)=@_;
1901: my %returnhash=();
1902: foreach my $uname (@unames) {
1903: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1904: }
1905: return %returnhash;
1906: }
1907:
1908: # Store away a list of names and associated student/employee IDs or clicker IDs
1909:
1910: sub idput {
1911: my ($udom,$idsref,$uhom,$namespace)=@_;
1912: my %servers=();
1913: my %ids=();
1914: my %byid = ();
1915: if (ref($idsref) eq 'HASH') {
1916: %ids=%{$idsref};
1917: }
1918: if ($namespace eq '') {
1919: $namespace = 'ids';
1920: }
1921: foreach my $uname (keys(%ids)) {
1922: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1923: if ($uhom eq '') {
1924: $uhom=&homeserver($uname,$udom);
1925: }
1926: if ($uhom ne 'no_host') {
1927: my $esc_unam=&escape($uname);
1928: if ($namespace eq 'ids') {
1929: my $id=&escape($ids{$uname});
1930: $id=~tr/A-Z/a-z/;
1931: my $esc_unam=&escape($uname);
1932: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1933: } else {
1934: my @currids = split(/,/,$ids{$uname});
1935: foreach my $id (@currids) {
1936: $byid{$uhom}{$id} .= $uname.',';
1937: }
1938: }
1939: }
1940: }
1941: if ($namespace eq 'clickers') {
1942: foreach my $server (keys(%byid)) {
1943: if (ref($byid{$server}) eq 'HASH') {
1944: foreach my $id (keys(%{$byid{$server}})) {
1945: $byid{$server} =~ s/,$//;
1946: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1947: }
1948: }
1949: }
1950: }
1951: foreach my $server (keys(%servers)) {
1952: $servers{$server} =~ s/\&$//;
1953: if ($namespace eq 'ids') {
1954: &critical('idput:'.$udom.':'.$servers{$server},$server);
1955: } else {
1956: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1957: }
1958: }
1959: }
1960:
1961: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1962:
1963: sub iddel {
1964: my ($udom,$idshashref,$uhome,$namespace)=@_;
1965: my %result=();
1966: my %ids=();
1967: my %byid = ();
1968: if (ref($idshashref) eq 'HASH') {
1969: %ids=%{$idshashref};
1970: } else {
1971: return %result;
1972: }
1973: if ($namespace eq '') {
1974: $namespace = 'ids';
1975: }
1976: my %servers=();
1977: while (my ($id,$unamestr) = each(%ids)) {
1978: if ($namespace eq 'ids') {
1979: my $uhom = $uhome;
1980: if ($uhom eq '') {
1981: $uhom=&homeserver($unamestr,$udom);
1982: }
1983: if ($uhom ne 'no_host') {
1984: $servers{$uhom}.='&'.&escape($id);
1985: }
1986: } else {
1987: my @curritems = split(/,/,$ids{$id});
1988: foreach my $uname (@curritems) {
1989: my $uhom = $uhome;
1990: if ($uhom eq '') {
1991: $uhom=&homeserver($uname,$udom);
1992: }
1993: if ($uhom ne 'no_host') {
1994: $byid{$uhom}{$id} .= $uname.',';
1995: }
1996: }
1997: }
1998: }
1999: if ($namespace eq 'clickers') {
2000: foreach my $server (keys(%byid)) {
2001: if (ref($byid{$server}) eq 'HASH') {
2002: foreach my $id (keys(%{$byid{$server}})) {
2003: $byid{$server}{$id} =~ s/,$//;
2004: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2005: }
2006: }
2007: }
2008: }
2009: foreach my $server (keys(%servers)) {
2010: $servers{$server} =~ s/\&$//;
2011: if ($namespace eq 'ids') {
2012: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2013: } elsif ($namespace eq 'clickers') {
2014: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2015: }
2016: }
2017: return %result;
2018: }
2019:
2020: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2021:
2022: sub updateclickers {
2023: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2024: my %clickers;
2025: if (ref($idshashref) eq 'HASH') {
2026: %clickers=%{$idshashref};
2027: } else {
2028: return;
2029: }
2030: my $items='';
2031: foreach my $item (keys(%clickers)) {
2032: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2033: }
2034: $items=~s/\&$//;
2035: my $request = "updateclickers:$udom:$action:$items";
2036: if ($critical) {
2037: return &critical($request,$uhome);
2038: } else {
2039: return &reply($request,$uhome);
2040: }
2041: }
2042:
2043: # ------------------------------dump from db file owned by domainconfig user
2044: sub dump_dom {
2045: my ($namespace, $udom, $regexp) = @_;
2046:
2047: $udom ||= $env{'user.domain'};
2048:
2049: return () unless $udom;
2050:
2051: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2052: }
2053:
2054: # ------------------------------------------ get items from domain db files
2055:
2056: sub get_dom {
2057: my ($namespace,$storearr,$udom,$uhome)=@_;
2058: return if ($udom eq 'public');
2059: my $items='';
2060: foreach my $item (@$storearr) {
2061: $items.=&escape($item).'&';
2062: }
2063: $items=~s/\&$//;
2064: if (!$udom) {
2065: $udom=$env{'user.domain'};
2066: return if ($udom eq 'public');
2067: if (defined(&domain($udom,'primary'))) {
2068: $uhome=&domain($udom,'primary');
2069: } else {
2070: undef($uhome);
2071: }
2072: } else {
2073: if (!$uhome) {
2074: if (defined(&domain($udom,'primary'))) {
2075: $uhome=&domain($udom,'primary');
2076: }
2077: }
2078: }
2079: if ($udom && $uhome && ($uhome ne 'no_host')) {
2080: my $rep;
2081: if ($namespace =~ /^enc/) {
2082: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2083: } else {
2084: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2085: }
2086: my %returnhash;
2087: if ($rep eq '' || $rep =~ /^error: 2 /) {
2088: return %returnhash;
2089: }
2090: my @pairs=split(/\&/,$rep);
2091: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2092: return @pairs;
2093: }
2094: my $i=0;
2095: foreach my $item (@$storearr) {
2096: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2097: $i++;
2098: }
2099: return %returnhash;
2100: } else {
2101: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2102: }
2103: }
2104:
2105: # -------------------------------------------- put items in domain db files
2106:
2107: sub put_dom {
2108: my ($namespace,$storehash,$udom,$uhome)=@_;
2109: if (!$udom) {
2110: $udom=$env{'user.domain'};
2111: if (defined(&domain($udom,'primary'))) {
2112: $uhome=&domain($udom,'primary');
2113: } else {
2114: undef($uhome);
2115: }
2116: } else {
2117: if (!$uhome) {
2118: if (defined(&domain($udom,'primary'))) {
2119: $uhome=&domain($udom,'primary');
2120: }
2121: }
2122: }
2123: if ($udom && $uhome && ($uhome ne 'no_host')) {
2124: my $items='';
2125: foreach my $item (keys(%$storehash)) {
2126: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2127: }
2128: $items=~s/\&$//;
2129: if ($namespace =~ /^enc/) {
2130: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2131: } else {
2132: return &reply("putdom:$udom:$namespace:$items",$uhome);
2133: }
2134: } else {
2135: &logthis("put_dom failed - no homeserver and/or domain");
2136: }
2137: }
2138:
2139: # --------------------- newput for items in db file owned by domainconfig user
2140: sub newput_dom {
2141: my ($namespace,$storehash,$udom) = @_;
2142: my $result;
2143: if (!$udom) {
2144: $udom=$env{'user.domain'};
2145: }
2146: if ($udom) {
2147: my $uname = &get_domainconfiguser($udom);
2148: $result = &newput($namespace,$storehash,$udom,$uname);
2149: }
2150: return $result;
2151: }
2152:
2153: # --------------------- delete for items in db file owned by domainconfig user
2154: sub del_dom {
2155: my ($namespace,$storearr,$udom)=@_;
2156: if (ref($storearr) eq 'ARRAY') {
2157: if (!$udom) {
2158: $udom=$env{'user.domain'};
2159: }
2160: if ($udom) {
2161: my $uname = &get_domainconfiguser($udom);
2162: return &del($namespace,$storearr,$udom,$uname);
2163: }
2164: }
2165: }
2166:
2167: # ----------------------------------construct domainconfig user for a domain
2168: sub get_domainconfiguser {
2169: my ($udom) = @_;
2170: return $udom.'-domainconfig';
2171: }
2172:
2173: sub retrieve_inst_usertypes {
2174: my ($udom) = @_;
2175: my (%returnhash,@order);
2176: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2177: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2178: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2179: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2180: } else {
2181: if (defined(&domain($udom,'primary'))) {
2182: my $uhome=&domain($udom,'primary');
2183: my $rep=&reply("inst_usertypes:$udom",$uhome);
2184: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2185: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2186: return (\%returnhash,\@order);
2187: }
2188: my ($hashitems,$orderitems) = split(/:/,$rep);
2189: my @pairs=split(/\&/,$hashitems);
2190: foreach my $item (@pairs) {
2191: my ($key,$value)=split(/=/,$item,2);
2192: $key = &unescape($key);
2193: next if ($key =~ /^error: 2 /);
2194: $returnhash{$key}=&thaw_unescape($value);
2195: }
2196: my @esc_order = split(/\&/,$orderitems);
2197: foreach my $item (@esc_order) {
2198: push(@order,&unescape($item));
2199: }
2200: } else {
2201: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2202: }
2203: return (\%returnhash,\@order);
2204: }
2205: }
2206:
2207: sub is_domainimage {
2208: my ($url) = @_;
2209: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2210: if (&domain($1) ne '') {
2211: return '1';
2212: }
2213: }
2214: return;
2215: }
2216:
2217: sub inst_directory_query {
2218: my ($srch) = @_;
2219: my $udom = $srch->{'srchdomain'};
2220: my %results;
2221: my $homeserver = &domain($udom,'primary');
2222: my $outcome;
2223: if ($homeserver ne '') {
2224: unless ($homeserver eq $perlvar{'lonHostID'}) {
2225: if ($srch->{'srchby'} eq 'email') {
2226: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2227: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2228: if (($major eq '' && $minor eq '') || ($major < 2) ||
2229: (($major == 2) && ($minor < 12))) {
2230: return;
2231: }
2232: }
2233: }
2234: my $queryid=&reply("querysend:instdirsearch:".
2235: &escape($srch->{'srchby'}).':'.
2236: &escape($srch->{'srchterm'}).':'.
2237: &escape($srch->{'srchtype'}),$homeserver);
2238: my $host=&hostname($homeserver);
2239: if ($queryid !~/^\Q$host\E\_/) {
2240: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2241: return;
2242: }
2243: my $response = &get_query_reply($queryid);
2244: my $maxtries = 5;
2245: my $tries = 1;
2246: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2247: $response = &get_query_reply($queryid);
2248: $tries ++;
2249: }
2250:
2251: if (!&error($response) && $response ne 'refused') {
2252: if ($response eq 'unavailable') {
2253: $outcome = $response;
2254: } else {
2255: $outcome = 'ok';
2256: my @matches = split(/\n/,$response);
2257: foreach my $match (@matches) {
2258: my ($key,$value) = split(/=/,$match);
2259: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2260: }
2261: }
2262: }
2263: }
2264: return ($outcome,%results);
2265: }
2266:
2267: sub usersearch {
2268: my ($srch) = @_;
2269: my $dom = $srch->{'srchdomain'};
2270: my %results;
2271: my %libserv = &all_library();
2272: my $query = 'usersearch';
2273: foreach my $tryserver (keys(%libserv)) {
2274: if (&host_domain($tryserver) eq $dom) {
2275: unless ($tryserver eq $perlvar{'lonHostID'}) {
2276: if ($srch->{'srchby'} eq 'email') {
2277: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2278: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2279: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2280: (($major == 2) && ($minor < 12)));
2281: }
2282: }
2283: my $host=&hostname($tryserver);
2284: my $queryid=
2285: &reply("querysend:".&escape($query).':'.
2286: &escape($srch->{'srchby'}).':'.
2287: &escape($srch->{'srchtype'}).':'.
2288: &escape($srch->{'srchterm'}),$tryserver);
2289: if ($queryid !~/^\Q$host\E\_/) {
2290: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2291: next;
2292: }
2293: my $reply = &get_query_reply($queryid);
2294: my $maxtries = 1;
2295: my $tries = 1;
2296: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2297: $reply = &get_query_reply($queryid);
2298: $tries ++;
2299: }
2300: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2301: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2302: } else {
2303: my @matches;
2304: if ($reply =~ /\n/) {
2305: @matches = split(/\n/,$reply);
2306: } else {
2307: @matches = split(/\&/,$reply);
2308: }
2309: foreach my $match (@matches) {
2310: my ($uname,$udom,%userhash);
2311: foreach my $entry (split(/:/,$match)) {
2312: my ($key,$value) =
2313: map {&unescape($_);} split(/=/,$entry);
2314: $userhash{$key} = $value;
2315: if ($key eq 'username') {
2316: $uname = $value;
2317: } elsif ($key eq 'domain') {
2318: $udom = $value;
2319: }
2320: }
2321: $results{$uname.':'.$udom} = \%userhash;
2322: }
2323: }
2324: }
2325: }
2326: return %results;
2327: }
2328:
2329: sub get_instuser {
2330: my ($udom,$uname,$id) = @_;
2331: my $homeserver = &domain($udom,'primary');
2332: my ($outcome,%results);
2333: if ($homeserver ne '') {
2334: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2335: &escape($id).':'.&escape($udom),$homeserver);
2336: my $host=&hostname($homeserver);
2337: if ($queryid !~/^\Q$host\E\_/) {
2338: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2339: return;
2340: }
2341: my $response = &get_query_reply($queryid);
2342: my $maxtries = 5;
2343: my $tries = 1;
2344: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2345: $response = &get_query_reply($queryid);
2346: $tries ++;
2347: }
2348: if (!&error($response) && $response ne 'refused') {
2349: if ($response eq 'unavailable') {
2350: $outcome = $response;
2351: } else {
2352: $outcome = 'ok';
2353: my @matches = split(/\n/,$response);
2354: foreach my $match (@matches) {
2355: my ($key,$value) = split(/=/,$match);
2356: $results{&unescape($key)} = &thaw_unescape($value);
2357: }
2358: }
2359: }
2360: }
2361: my %userinfo;
2362: if (ref($results{$uname}) eq 'HASH') {
2363: %userinfo = %{$results{$uname}};
2364: }
2365: return ($outcome,%userinfo);
2366: }
2367:
2368: sub get_multiple_instusers {
2369: my ($udom,$users,$caller) = @_;
2370: my ($outcome,$results);
2371: if (ref($users) eq 'HASH') {
2372: my $count = keys(%{$users});
2373: my $requested = &freeze_escape($users);
2374: my $homeserver = &domain($udom,'primary');
2375: if ($homeserver ne '') {
2376: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2377: my $host=&hostname($homeserver);
2378: if ($queryid !~/^\Q$host\E\_/) {
2379: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2380: ' for host: '.$homeserver.'in domain '.$udom);
2381: return ($outcome,$results);
2382: }
2383: my $response = &get_query_reply($queryid);
2384: my $maxtries = 5;
2385: if ($count > 100) {
2386: $maxtries = 1+int($count/20);
2387: }
2388: my $tries = 1;
2389: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2390: $response = &get_query_reply($queryid);
2391: $tries ++;
2392: }
2393: if ($response eq '') {
2394: $results = {};
2395: foreach my $key (keys(%{$users})) {
2396: my ($uname,$id);
2397: if ($caller eq 'id') {
2398: $id = $key;
2399: } else {
2400: $uname = $key;
2401: }
2402: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2403: $outcome = $resp;
2404: if ($resp eq 'ok') {
2405: %{$results} = (%{$results}, %info);
2406: } else {
2407: last;
2408: }
2409: }
2410: } elsif(!&error($response) && ($response ne 'refused')) {
2411: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2412: $outcome = $response;
2413: } else {
2414: ($outcome,my $userdata) = split(/=/,$response,2);
2415: if ($outcome eq 'ok') {
2416: $results = &thaw_unescape($userdata);
2417: }
2418: }
2419: }
2420: }
2421: }
2422: return ($outcome,$results);
2423: }
2424:
2425: sub inst_rulecheck {
2426: my ($udom,$uname,$id,$item,$rules) = @_;
2427: my %returnhash;
2428: if ($udom ne '') {
2429: if (ref($rules) eq 'ARRAY') {
2430: @{$rules} = map {&escape($_);} (@{$rules});
2431: my $rulestr = join(':',@{$rules});
2432: my $homeserver=&domain($udom,'primary');
2433: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2434: my $response;
2435: if ($item eq 'username') {
2436: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2437: ':'.&escape($uname).':'.$rulestr,
2438: $homeserver));
2439: } elsif ($item eq 'id') {
2440: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2441: ':'.&escape($id).':'.$rulestr,
2442: $homeserver));
2443: } elsif ($item eq 'selfcreate') {
2444: $response=&unescape(&reply('instselfcreatecheck:'.
2445: &escape($udom).':'.&escape($uname).
2446: ':'.$rulestr,$homeserver));
2447: }
2448: if ($response ne 'refused') {
2449: my @pairs=split(/\&/,$response);
2450: foreach my $item (@pairs) {
2451: my ($key,$value)=split(/=/,$item,2);
2452: $key = &unescape($key);
2453: next if ($key =~ /^error: 2 /);
2454: $returnhash{$key}=&thaw_unescape($value);
2455: }
2456: }
2457: }
2458: }
2459: }
2460: return %returnhash;
2461: }
2462:
2463: sub inst_userrules {
2464: my ($udom,$check) = @_;
2465: my (%ruleshash,@ruleorder);
2466: if ($udom ne '') {
2467: my $homeserver=&domain($udom,'primary');
2468: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2469: my $response;
2470: if ($check eq 'id') {
2471: $response=&reply('instidrules:'.&escape($udom),
2472: $homeserver);
2473: } elsif ($check eq 'email') {
2474: $response=&reply('instemailrules:'.&escape($udom),
2475: $homeserver);
2476: } else {
2477: $response=&reply('instuserrules:'.&escape($udom),
2478: $homeserver);
2479: }
2480: if (($response ne 'refused') && ($response ne 'error') &&
2481: ($response ne 'unknown_cmd') &&
2482: ($response ne 'no_such_host')) {
2483: my ($hashitems,$orderitems) = split(/:/,$response);
2484: my @pairs=split(/\&/,$hashitems);
2485: foreach my $item (@pairs) {
2486: my ($key,$value)=split(/=/,$item,2);
2487: $key = &unescape($key);
2488: next if ($key =~ /^error: 2 /);
2489: $ruleshash{$key}=&thaw_unescape($value);
2490: }
2491: my @esc_order = split(/\&/,$orderitems);
2492: foreach my $item (@esc_order) {
2493: push(@ruleorder,&unescape($item));
2494: }
2495: }
2496: }
2497: }
2498: return (\%ruleshash,\@ruleorder);
2499: }
2500:
2501: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2502:
2503: sub get_domain_defaults {
2504: my ($domain,$ignore_cache) = @_;
2505: return if (($domain eq '') || ($domain eq 'public'));
2506: my $cachetime = 60*60*24;
2507: unless ($ignore_cache) {
2508: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2509: if (defined($cached)) {
2510: if (ref($result) eq 'HASH') {
2511: return %{$result};
2512: }
2513: }
2514: }
2515: my %domdefaults;
2516: my %domconfig =
2517: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2518: 'requestcourses','inststatus',
2519: 'coursedefaults','usersessions',
2520: 'requestauthor','selfenrollment',
2521: 'coursecategories','ssl','autoenroll',
2522: 'trust','helpsettings'],$domain);
2523: my @coursetypes = ('official','unofficial','community','textbook','placement');
2524: if (ref($domconfig{'defaults'}) eq 'HASH') {
2525: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2526: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2527: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2528: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2529: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2530: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2531: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2532: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2533: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2534: } else {
2535: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2536: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2537: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2538: }
2539: if (ref($domconfig{'quotas'}) eq 'HASH') {
2540: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2541: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2542: } else {
2543: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2544: }
2545: my @usertools = ('aboutme','blog','webdav','portfolio');
2546: foreach my $item (@usertools) {
2547: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2548: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2549: }
2550: }
2551: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2552: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2553: }
2554: }
2555: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2556: foreach my $item ('official','unofficial','community','textbook','placement') {
2557: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2558: }
2559: }
2560: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2561: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2562: }
2563: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2564: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2565: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2566: }
2567: }
2568: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2569: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2570: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2571: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2572: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2573: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2574: }
2575: foreach my $type (@coursetypes) {
2576: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2577: unless ($type eq 'community') {
2578: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2579: }
2580: }
2581: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2582: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2583: }
2584: if ($domdefaults{'postsubmit'} eq 'on') {
2585: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2586: $domdefaults{$type.'postsubtimeout'} =
2587: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2588: }
2589: }
2590: }
2591: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2592: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2593: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2594: if (@clonecodes) {
2595: $domdefaults{'canclone'} = join('+',@clonecodes);
2596: }
2597: }
2598: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2599: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2600: }
2601: if ($domconfig{'coursedefaults'}{'texengine'}) {
2602: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2603: }
2604: }
2605: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2606: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2607: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2608: }
2609: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2610: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2611: }
2612: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2613: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2614: }
2615: }
2616: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2617: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2618: my @settings = ('types','registered','enroll_dates','access_dates','section',
2619: 'approval','limit');
2620: foreach my $type (@coursetypes) {
2621: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2622: my @mgrdc = ();
2623: foreach my $item (@settings) {
2624: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2625: push(@mgrdc,$item);
2626: }
2627: }
2628: if (@mgrdc) {
2629: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2630: }
2631: }
2632: }
2633: }
2634: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2635: foreach my $type (@coursetypes) {
2636: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2637: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2638: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2639: }
2640: }
2641: }
2642: }
2643: }
2644: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2645: $domdefaults{'catauth'} = 'std';
2646: $domdefaults{'catunauth'} = 'std';
2647: if ($domconfig{'coursecategories'}{'auth'}) {
2648: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2649: }
2650: if ($domconfig{'coursecategories'}{'unauth'}) {
2651: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2652: }
2653: }
2654: if (ref($domconfig{'ssl'}) eq 'HASH') {
2655: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2656: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2657: }
2658: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2659: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2660: }
2661: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2662: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2663: }
2664: }
2665: if (ref($domconfig{'trust'}) eq 'HASH') {
2666: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2667: foreach my $prefix (@prefixes) {
2668: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2669: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2670: }
2671: }
2672: }
2673: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2674: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2675: }
2676: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2677: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2678: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2679: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2680: }
2681: }
2682: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2683: return %domdefaults;
2684: }
2685:
2686: sub course_portal_url {
2687: my ($cnum,$cdom) = @_;
2688: my $chome = &homeserver($cnum,$cdom);
2689: my $hostname = &hostname($chome);
2690: my $protocol = $protocol{$chome};
2691: $protocol = 'http' if ($protocol ne 'https');
2692: my %domdefaults = &get_domain_defaults($cdom);
2693: my $firsturl;
2694: if ($domdefaults{'portal_def'}) {
2695: $firsturl = $domdefaults{'portal_def'};
2696: } else {
2697: $firsturl = $protocol.'://'.$hostname;
2698: }
2699: return $firsturl;
2700: }
2701:
2702: # --------------------------------------------------- Assign a key to a student
2703:
2704: sub assign_access_key {
2705: #
2706: # a valid key looks like uname:udom#comments
2707: # comments are being appended
2708: #
2709: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2710: $kdom=
2711: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2712: $knum=
2713: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2714: $cdom=
2715: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2716: $cnum=
2717: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2718: $udom=$env{'user.name'} unless (defined($udom));
2719: $uname=$env{'user.domain'} unless (defined($uname));
2720: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2721: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2722: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2723: # assigned to this person
2724: # - this should not happen,
2725: # unless something went wrong
2726: # the first time around
2727: # ready to assign
2728: $logentry=$1.'; '.$logentry;
2729: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2730: $kdom,$knum) eq 'ok') {
2731: # key now belongs to user
2732: my $envkey='key.'.$cdom.'_'.$cnum;
2733: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2734: &appenv({'environment.'.$envkey => $ckey});
2735: return 'ok';
2736: } else {
2737: return
2738: 'error: Count not permanently assign key, will need to be re-entered later.';
2739: }
2740: } else {
2741: return 'error: Could not assign key, try again later.';
2742: }
2743: } elsif (!$existing{$ckey}) {
2744: # the key does not exist
2745: return 'error: The key does not exist';
2746: } else {
2747: # the key is somebody else's
2748: return 'error: The key is already in use';
2749: }
2750: }
2751:
2752: # ------------------------------------------ put an additional comment on a key
2753:
2754: sub comment_access_key {
2755: #
2756: # a valid key looks like uname:udom#comments
2757: # comments are being appended
2758: #
2759: my ($ckey,$cdom,$cnum,$logentry)=@_;
2760: $cdom=
2761: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2762: $cnum=
2763: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2764: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2765: if ($existing{$ckey}) {
2766: $existing{$ckey}.='; '.$logentry;
2767: # ready to assign
2768: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2769: $cdom,$cnum) eq 'ok') {
2770: return 'ok';
2771: } else {
2772: return 'error: Count not store comment.';
2773: }
2774: } else {
2775: # the key does not exist
2776: return 'error: The key does not exist';
2777: }
2778: }
2779:
2780: # ------------------------------------------------------ Generate a set of keys
2781:
2782: sub generate_access_keys {
2783: my ($number,$cdom,$cnum,$logentry)=@_;
2784: $cdom=
2785: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2786: $cnum=
2787: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2788: unless (&allowed('mky',$cdom)) { return 0; }
2789: unless (($cdom) && ($cnum)) { return 0; }
2790: if ($number>10000) { return 0; }
2791: sleep(2); # make sure don't get same seed twice
2792: srand(time()^($$+($$<<15))); # from "Programming Perl"
2793: my $total=0;
2794: for (my $i=1;$i<=$number;$i++) {
2795: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2796: sprintf("%lx",int(100000*rand)).'-'.
2797: sprintf("%lx",int(100000*rand));
2798: $newkey=~s/1/g/g; # folks mix up 1 and l
2799: $newkey=~s/0/h/g; # and also 0 and O
2800: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2801: if ($existing{$newkey}) {
2802: $i--;
2803: } else {
2804: if (&put('accesskeys',
2805: { $newkey => '# generated '.localtime().
2806: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2807: '; '.$logentry },
2808: $cdom,$cnum) eq 'ok') {
2809: $total++;
2810: }
2811: }
2812: }
2813: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2814: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2815: return $total;
2816: }
2817:
2818: # ------------------------------------------------------- Validate an accesskey
2819:
2820: sub validate_access_key {
2821: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2822: $cdom=
2823: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2824: $cnum=
2825: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2826: $udom=$env{'user.domain'} unless (defined($udom));
2827: $uname=$env{'user.name'} unless (defined($uname));
2828: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2829: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2830: }
2831:
2832: # ------------------------------------- Find the section of student in a course
2833: sub devalidate_getsection_cache {
2834: my ($udom,$unam,$courseid)=@_;
2835: my $hashid="$udom:$unam:$courseid";
2836: &devalidate_cache_new('getsection',$hashid);
2837: }
2838:
2839: sub courseid_to_courseurl {
2840: my ($courseid) = @_;
2841: #already url style courseid
2842: return $courseid if ($courseid =~ m{^/});
2843:
2844: if (exists($env{'course.'.$courseid.'.num'})) {
2845: my $cnum = $env{'course.'.$courseid.'.num'};
2846: my $cdom = $env{'course.'.$courseid.'.domain'};
2847: return "/$cdom/$cnum";
2848: }
2849:
2850: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2851: if (exists($courseinfo{'num'})) {
2852: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2853: }
2854:
2855: return undef;
2856: }
2857:
2858: sub getsection {
2859: my ($udom,$unam,$courseid)=@_;
2860: my $cachetime=1800;
2861:
2862: my $hashid="$udom:$unam:$courseid";
2863: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2864: if (defined($cached)) { return $result; }
2865:
2866: my %Pending;
2867: my %Expired;
2868: #
2869: # Each role can either have not started yet (pending), be active,
2870: # or have expired.
2871: #
2872: # If there is an active role, we are done.
2873: #
2874: # If there is more than one role which has not started yet,
2875: # choose the one which will start sooner
2876: # If there is one role which has not started yet, return it.
2877: #
2878: # If there is more than one expired role, choose the one which ended last.
2879: # If there is a role which has expired, return it.
2880: #
2881: $courseid = &courseid_to_courseurl($courseid);
2882: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2883: foreach my $key (keys(%roleshash)) {
2884: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2885: my $section=$1;
2886: if ($key eq $courseid.'_st') { $section=''; }
2887: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2888: my $now=time;
2889: if (defined($end) && $end && ($now > $end)) {
2890: $Expired{$end}=$section;
2891: next;
2892: }
2893: if (defined($start) && $start && ($now < $start)) {
2894: $Pending{$start}=$section;
2895: next;
2896: }
2897: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2898: }
2899: #
2900: # Presumedly there will be few matching roles from the above
2901: # loop and the sorting time will be negligible.
2902: if (scalar(keys(%Pending))) {
2903: my ($time) = sort {$a <=> $b} keys(%Pending);
2904: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2905: }
2906: if (scalar(keys(%Expired))) {
2907: my @sorted = sort {$a <=> $b} keys(%Expired);
2908: my $time = pop(@sorted);
2909: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2910: }
2911: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2912: }
2913:
2914: sub save_cache {
2915: &purge_remembered();
2916: #&Apache::loncommon::validate_page();
2917: undef(%env);
2918: undef($env_loaded);
2919: }
2920:
2921: my $to_remember=-1;
2922: my %remembered;
2923: my %accessed;
2924: my $kicks=0;
2925: my $hits=0;
2926: sub make_key {
2927: my ($name,$id) = @_;
2928: if (length($id) > 65
2929: && length(&escape($id)) > 200) {
2930: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2931: }
2932: return &escape($name.':'.$id);
2933: }
2934:
2935: sub devalidate_cache_new {
2936: my ($name,$id,$debug) = @_;
2937: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2938: my $remembered_id=$name.':'.$id;
2939: $id=&make_key($name,$id);
2940: $memcache->delete($id);
2941: delete($remembered{$remembered_id});
2942: delete($accessed{$remembered_id});
2943: }
2944:
2945: sub is_cached_new {
2946: my ($name,$id,$debug) = @_;
2947: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2948: if (exists($remembered{$remembered_id})) {
2949: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2950: $accessed{$remembered_id}=[&gettimeofday()];
2951: $hits++;
2952: return ($remembered{$remembered_id},1);
2953: }
2954: $id=&make_key($name,$id);
2955: my $value = $memcache->get($id);
2956: if (!(defined($value))) {
2957: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2958: return (undef,undef);
2959: }
2960: if ($value eq '__undef__') {
2961: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2962: $value=undef;
2963: }
2964: &make_room($remembered_id,$value,$debug);
2965: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2966: return ($value,1);
2967: }
2968:
2969: sub do_cache_new {
2970: my ($name,$id,$value,$time,$debug) = @_;
2971: my $remembered_id=$name.':'.$id;
2972: $id=&make_key($name,$id);
2973: my $setvalue=$value;
2974: if (!defined($setvalue)) {
2975: $setvalue='__undef__';
2976: }
2977: if (!defined($time) ) {
2978: $time=600;
2979: }
2980: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2981: my $result = $memcache->set($id,$setvalue,$time);
2982: if (! $result) {
2983: &logthis("caching of id -> $id failed");
2984: $memcache->disconnect_all();
2985: }
2986: # need to make a copy of $value
2987: &make_room($remembered_id,$value,$debug);
2988: return $value;
2989: }
2990:
2991: sub make_room {
2992: my ($remembered_id,$value,$debug)=@_;
2993:
2994: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2995: : $value;
2996: if ($to_remember<0) { return; }
2997: $accessed{$remembered_id}=[&gettimeofday()];
2998: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2999: my $to_kick;
3000: my $max_time=0;
3001: foreach my $other (keys(%accessed)) {
3002: if (&tv_interval($accessed{$other}) > $max_time) {
3003: $to_kick=$other;
3004: $max_time=&tv_interval($accessed{$other});
3005: }
3006: }
3007: delete($remembered{$to_kick});
3008: delete($accessed{$to_kick});
3009: $kicks++;
3010: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3011: return;
3012: }
3013:
3014: sub purge_remembered {
3015: #&logthis("Tossing ".scalar(keys(%remembered)));
3016: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3017: undef(%remembered);
3018: undef(%accessed);
3019: }
3020: # ------------------------------------- Read an entry from a user's environment
3021:
3022: sub userenvironment {
3023: my ($udom,$unam,@what)=@_;
3024: my $items;
3025: foreach my $item (@what) {
3026: $items.=&escape($item).'&';
3027: }
3028: $items=~s/\&$//;
3029: my %returnhash=();
3030: my $uhome = &homeserver($unam,$udom);
3031: unless ($uhome eq 'no_host') {
3032: my @answer=split(/\&/,
3033: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3034: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3035: return %returnhash;
3036: }
3037: my $i;
3038: for ($i=0;$i<=$#what;$i++) {
3039: $returnhash{$what[$i]}=&unescape($answer[$i]);
3040: }
3041: }
3042: return %returnhash;
3043: }
3044:
3045: # ---------------------------------------------------------- Get a studentphoto
3046: sub studentphoto {
3047: my ($udom,$unam,$ext) = @_;
3048: my $home=&Apache::lonnet::homeserver($unam,$udom);
3049: if (defined($env{'request.course.id'})) {
3050: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3051: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3052: return(&retrievestudentphoto($udom,$unam,$ext));
3053: } else {
3054: my ($result,$perm_reqd)=
3055: &Apache::lonnet::auto_photo_permission($unam,$udom);
3056: if ($result eq 'ok') {
3057: if (!($perm_reqd eq 'yes')) {
3058: return(&retrievestudentphoto($udom,$unam,$ext));
3059: }
3060: }
3061: }
3062: }
3063: } else {
3064: my ($result,$perm_reqd) =
3065: &Apache::lonnet::auto_photo_permission($unam,$udom);
3066: if ($result eq 'ok') {
3067: if (!($perm_reqd eq 'yes')) {
3068: return(&retrievestudentphoto($udom,$unam,$ext));
3069: }
3070: }
3071: }
3072: return '/adm/lonKaputt/lonlogo_broken.gif';
3073: }
3074:
3075: sub retrievestudentphoto {
3076: my ($udom,$unam,$ext,$type) = @_;
3077: my $home=&Apache::lonnet::homeserver($unam,$udom);
3078: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3079: if ($ret eq 'ok') {
3080: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3081: if ($type eq 'thumbnail') {
3082: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3083: }
3084: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3085: return $tokenurl;
3086: } else {
3087: if ($type eq 'thumbnail') {
3088: return '/adm/lonKaputt/genericstudent_tn.gif';
3089: } else {
3090: return '/adm/lonKaputt/lonlogo_broken.gif';
3091: }
3092: }
3093: }
3094:
3095: # -------------------------------------------------------------------- New chat
3096:
3097: sub chatsend {
3098: my ($newentry,$anon,$group)=@_;
3099: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3100: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3101: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3102: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3103: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3104: &escape($newentry)).':'.$group,$chome);
3105: }
3106:
3107: # ------------------------------------------ Find current version of a resource
3108:
3109: sub getversion {
3110: my $fname=&clutter(shift);
3111: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3112: return ¤tversion(&filelocation('',$fname));
3113: }
3114:
3115: sub currentversion {
3116: my $fname=shift;
3117: my $author=$fname;
3118: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3119: my ($udom,$uname)=split(/\//,$author);
3120: my $home=&homeserver($uname,$udom);
3121: if ($home eq 'no_host') {
3122: return -1;
3123: }
3124: my $answer=&reply("currentversion:$fname",$home);
3125: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3126: return -1;
3127: }
3128: return $answer;
3129: }
3130:
3131: #
3132: # Return special version number of resource if set by override, empty otherwise
3133: #
3134: sub usedversion {
3135: my $fname=shift;
3136: unless ($fname) { $fname=$env{'request.uri'}; }
3137: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3138: if ($urlversion) { return $urlversion; }
3139: return '';
3140: }
3141:
3142: # ----------------------------- Subscribe to a resource, return URL if possible
3143:
3144: sub subscribe {
3145: my $fname=shift;
3146: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3147: $fname=~s/[\n\r]//g;
3148: my $author=$fname;
3149: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3150: my ($udom,$uname)=split(/\//,$author);
3151: my $home=homeserver($uname,$udom);
3152: if ($home eq 'no_host') {
3153: return 'not_found';
3154: }
3155: my $answer=reply("sub:$fname",$home);
3156: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3157: $answer.=' by '.$home;
3158: }
3159: return $answer;
3160: }
3161:
3162: # -------------------------------------------------------------- Replicate file
3163:
3164: sub repcopy {
3165: my $filename=shift;
3166: $filename=~s/\/+/\//g;
3167: my $londocroot = $perlvar{'lonDocRoot'};
3168: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3169: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3170: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3171: $filename=~m{^/*(uploaded|editupload)/}) {
3172: return &repcopy_userfile($filename);
3173: }
3174: $filename=~s/[\n\r]//g;
3175: my $transname="$filename.in.transfer";
3176: # FIXME: this should flock
3177: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3178: my $remoteurl=subscribe($filename);
3179: if ($remoteurl =~ /^con_lost by/) {
3180: &logthis("Subscribe returned $remoteurl: $filename");
3181: return 'unavailable';
3182: } elsif ($remoteurl eq 'not_found') {
3183: #&logthis("Subscribe returned not_found: $filename");
3184: return 'not_found';
3185: } elsif ($remoteurl =~ /^rejected by/) {
3186: &logthis("Subscribe returned $remoteurl: $filename");
3187: return 'forbidden';
3188: } elsif ($remoteurl eq 'directory') {
3189: return 'ok';
3190: } else {
3191: my $author=$filename;
3192: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3193: my ($udom,$uname)=split(/\//,$author);
3194: my $home=homeserver($uname,$udom);
3195: unless ($home eq $perlvar{'lonHostID'}) {
3196: my @parts=split(/\//,$filename);
3197: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3198: if ($path ne "$londocroot/res") {
3199: &logthis("Malconfiguration for replication: $filename");
3200: return 'bad_request';
3201: }
3202: my $count;
3203: for ($count=5;$count<$#parts;$count++) {
3204: $path.="/$parts[$count]";
3205: if ((-e $path)!=1) {
3206: mkdir($path,0777);
3207: }
3208: }
3209: my $request=new HTTP::Request('GET',"$remoteurl");
3210: my $response;
3211: if ($remoteurl =~ m{/raw/}) {
3212: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3213: } else {
3214: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3215: }
3216: if ($response->is_error()) {
3217: unlink($transname);
3218: my $message=$response->status_line;
3219: &logthis("<font color=\"blue\">WARNING:"
3220: ." LWP get: $message: $filename</font>");
3221: return 'unavailable';
3222: } else {
3223: if ($remoteurl!~/\.meta$/) {
3224: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3225: my $mresponse;
3226: if ($remoteurl =~ m{/raw/}) {
3227: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3228: } else {
3229: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3230: }
3231: if ($mresponse->is_error()) {
3232: unlink($filename.'.meta');
3233: &logthis(
3234: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3235: }
3236: }
3237: rename($transname,$filename);
3238: return 'ok';
3239: }
3240: }
3241: }
3242: }
3243:
3244: # ------------------------------------------------ Get server side include body
3245: sub ssi_body {
3246: my ($filelink,%form)=@_;
3247: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3248: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3249: }
3250: my $output='';
3251: my $response;
3252: if ($filelink=~/^https?\:/) {
3253: ($output,$response)=&externalssi($filelink);
3254: } else {
3255: $filelink .= $filelink=~/\?/ ? '&' : '?';
3256: $filelink .= 'inhibitmenu=yes';
3257: ($output,$response)=&ssi($filelink,%form);
3258: }
3259: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3260: $output=~s/^.*?\<body[^\>]*\>//si;
3261: $output=~s/\<\/body\s*\>.*?$//si;
3262: if (wantarray) {
3263: return ($output, $response);
3264: } else {
3265: return $output;
3266: }
3267: }
3268:
3269: # --------------------------------------------------------- Server Side Include
3270:
3271: sub absolute_url {
3272: my ($host_name) = @_;
3273: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3274: if ($host_name eq '') {
3275: $host_name = $ENV{'SERVER_NAME'};
3276: }
3277: return $protocol.$host_name;
3278: }
3279:
3280: #
3281: # Server side include.
3282: # Parameters:
3283: # fn Possibly encrypted resource name/id.
3284: # form Hash that describes how the rendering should be done
3285: # and other things.
3286: # Returns:
3287: # Scalar context: The content of the response.
3288: # Array context: 2 element list of the content and the full response object.
3289: #
3290: sub ssi {
3291:
3292: my ($fn,%form)=@_;
3293: my $request;
3294:
3295: $form{'no_update_last_known'}=1;
3296: &Apache::lonenc::check_encrypt(\$fn);
3297: if (%form) {
3298: $request=new HTTP::Request('POST',&absolute_url().$fn);
3299: $request->content(join('&',map {
3300: my $name = escape($_);
3301: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3302: ? join("&$name=", map {escape($_) } @{$form{$_}})
3303: : &escape($form{$_}) );
3304: } keys(%form)));
3305: } else {
3306: $request=new HTTP::Request('GET',&absolute_url().$fn);
3307: }
3308:
3309: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3310: my $lonhost = $perlvar{'lonHostID'};
3311: my $islocal;
3312: if (($env{'request.course.id'}) &&
3313: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3314: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3315: ($form{'grade_symb'} ne '') &&
3316: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3317: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3318: $islocal = 1;
3319: }
3320: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3321: '','','',$islocal);
3322:
3323: if (wantarray) {
3324: return ($response->content, $response);
3325: } else {
3326: return $response->content;
3327: }
3328: }
3329:
3330: sub externalssi {
3331: my ($url)=@_;
3332: my $request=new HTTP::Request('GET',$url);
3333: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3334: if (wantarray) {
3335: return ($response->content, $response);
3336: } else {
3337: return $response->content;
3338: }
3339: }
3340:
3341:
3342: # If the local copy of a replicated resource is outdated, trigger a
3343: # connection from the homeserver to flush the delayed queue. If no update
3344: # happens, remove local copies of outdated resource (and corresponding
3345: # metadata file).
3346:
3347: sub remove_stale_resfile {
3348: my ($url) = @_;
3349: my $removed;
3350: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3351: my $audom = $1;
3352: my $auname = $2;
3353: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3354: my $homeserver = &homeserver($auname,$audom);
3355: unless (($homeserver eq 'no_host') ||
3356: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3357: my $fname = &filelocation('',$url);
3358: if (-e $fname) {
3359: my $protocol = $protocol{$homeserver};
3360: $protocol = 'http' if ($protocol ne 'https');
3361: my $hostname = &hostname($homeserver);
3362: if ($hostname) {
3363: my $uri = &declutter($url);
3364: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3365: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3366: if ($response->is_success()) {
3367: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3368: my $locmodtime = (stat($fname))[9];
3369: if ($locmodtime < $remmodtime) {
3370: my $stale;
3371: my $answer = &reply('pong',$homeserver);
3372: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3373: sleep(0.2);
3374: $locmodtime = (stat($fname))[9];
3375: if ($locmodtime < $remmodtime) {
3376: my $posstransfer = $fname.'.in.transfer';
3377: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3378: $removed = 1;
3379: } else {
3380: $stale = 1;
3381: }
3382: } else {
3383: $removed = 1;
3384: }
3385: } else {
3386: $stale = 1;
3387: }
3388: if ($stale) {
3389: unlink($fname);
3390: if ($uri!~/\.meta$/) {
3391: unlink($fname.'.meta');
3392: }
3393: &reply("unsub:$fname",$homeserver);
3394: $removed = 1;
3395: }
3396: }
3397: }
3398: }
3399: }
3400: }
3401: }
3402: }
3403: return $removed;
3404: }
3405:
3406: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3407:
3408: sub allowuploaded {
3409: my ($srcurl,$url)=@_;
3410: $url=&clutter(&declutter($url));
3411: my $dir=$url;
3412: $dir=~s/\/[^\/]+$//;
3413: my %httpref=();
3414: my $httpurl=&hreflocation('',$url);
3415: $httpref{'httpref.'.$httpurl}=$srcurl;
3416: &Apache::lonnet::appenv(\%httpref);
3417: }
3418:
3419: #
3420: # Determine if the current user should be able to edit a particular resource,
3421: # when viewing in course context.
3422: # (a) When viewing resource used to determine if "Edit" item is included in
3423: # Functions.
3424: # (b) When displaying folder contents in course editor, used to determine if
3425: # "Edit" link will be displayed alongside resource.
3426: #
3427: # input: six args -- filename (decluttered), course number, course domain,
3428: # url, symb (if registered) and group (if this is a group
3429: # item -- e.g., bulletin board, group page etc.).
3430: # output: array of five scalars --
3431: # $cfile -- url for file editing if editable on current server
3432: # $home -- homeserver of resource (i.e., for author if published,
3433: # or course if uploaded.).
3434: # $switchserver -- 1 if server switch will be needed.
3435: # $forceedit -- 1 if icon/link should be to go to edit mode
3436: # $forceview -- 1 if icon/link should be to go to view mode
3437: #
3438:
3439: sub can_edit_resource {
3440: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3441: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3442: #
3443: # For aboutme pages user can only edit his/her own.
3444: #
3445: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3446: my ($sdom,$sname) = ($1,$2);
3447: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3448: $home = $env{'user.home'};
3449: $cfile = $resurl;
3450: if ($env{'form.forceedit'}) {
3451: $forceview = 1;
3452: } else {
3453: $forceedit = 1;
3454: }
3455: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3456: } else {
3457: return;
3458: }
3459: }
3460:
3461: if ($env{'request.course.id'}) {
3462: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3463: if ($group ne '') {
3464: # if this is a group homepage or group bulletin board, check group privs
3465: my $allowed = 0;
3466: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3467: if ((&allowed('mdg',$env{'request.course.id'}.
3468: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3469: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3470: $allowed = 1;
3471: }
3472: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3473: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3474: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3475: $allowed = 1;
3476: }
3477: }
3478: if ($allowed) {
3479: $home=&homeserver($cnum,$cdom);
3480: if ($env{'form.forceedit'}) {
3481: $forceview = 1;
3482: } else {
3483: $forceedit = 1;
3484: }
3485: $cfile = $resurl;
3486: } else {
3487: return;
3488: }
3489: } else {
3490: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3491: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3492: return;
3493: }
3494: } elsif (!$crsedit) {
3495: #
3496: # No edit allowed where CC has switched to student role.
3497: #
3498: return;
3499: }
3500: }
3501: }
3502:
3503: if ($file ne '') {
3504: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3505: if (&is_course_upload($file,$cnum,$cdom)) {
3506: $uploaded = 1;
3507: $incourse = 1;
3508: if ($file =~/\.(htm|html|css|js|txt)$/) {
3509: $cfile = &hreflocation('',$file);
3510: if ($env{'form.forceedit'}) {
3511: $forceview = 1;
3512: } else {
3513: $forceedit = 1;
3514: }
3515: }
3516: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3517: $incourse = 1;
3518: if ($env{'form.forceedit'}) {
3519: $forceview = 1;
3520: } else {
3521: $forceedit = 1;
3522: }
3523: $cfile = $resurl;
3524: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3525: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3526: $incourse = 1;
3527: if ($env{'form.forceedit'}) {
3528: $forceview = 1;
3529: } else {
3530: $forceedit = 1;
3531: }
3532: $cfile = $resurl;
3533: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3534: $incourse = 1;
3535: $cfile = $resurl.'/smpedit';
3536: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3537: $incourse = 1;
3538: if ($env{'form.forceedit'}) {
3539: $forceview = 1;
3540: } else {
3541: $forceedit = 1;
3542: }
3543: $cfile = $resurl;
3544: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3545: $incourse = 1;
3546: if ($env{'form.forceedit'}) {
3547: $forceview = 1;
3548: } else {
3549: $forceedit = 1;
3550: }
3551: $cfile = $resurl;
3552: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3553: $incourse = 1;
3554: if ($env{'form.forceedit'}) {
3555: $forceview = 1;
3556: } else {
3557: $forceedit = 1;
3558: }
3559: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3560: }
3561: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3562: my $template = '/res/lib/templates/simpleproblem.problem';
3563: if (&is_on_map($template)) {
3564: $incourse = 1;
3565: $forceview = 1;
3566: $cfile = $template;
3567: }
3568: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3569: $incourse = 1;
3570: if ($env{'form.forceedit'}) {
3571: $forceview = 1;
3572: } else {
3573: $forceedit = 1;
3574: }
3575: $cfile = $resurl;
3576: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3577: $incourse = 1;
3578: if ($env{'form.forceedit'}) {
3579: $forceview = 1;
3580: } else {
3581: $forceedit = 1;
3582: }
3583: $cfile = $resurl;
3584: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3585: $incourse = 1;
3586: $forceview = 1;
3587: if ($symb) {
3588: my ($map,$id,$res)=&decode_symb($symb);
3589: $env{'request.symb'} = $symb;
3590: $cfile = &clutter($res);
3591: } else {
3592: $cfile = $env{'form.suppurl'};
3593: my $escfile = &unescape($cfile);
3594: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3595: $cfile = '/adm/wrapper'.$escfile;
3596: } else {
3597: $escfile =~ s{^http://}{};
3598: $cfile = &escape("/adm/wrapper/ext/$escfile");
3599: }
3600: }
3601: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3602: if ($env{'form.forceedit'}) {
3603: $forceview = 1;
3604: } else {
3605: $forceedit = 1;
3606: }
3607: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3608: }
3609: }
3610: if ($uploaded || $incourse) {
3611: $home=&homeserver($cnum,$cdom);
3612: } elsif ($file !~ m{/$}) {
3613: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3614: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3615: # Check that the user has permission to edit this resource
3616: my $setpriv = 1;
3617: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3618: if (defined($cfudom)) {
3619: $home=&homeserver($cfuname,$cfudom);
3620: $cfile=$file;
3621: }
3622: }
3623: if (($cfile ne '') && (!$incourse || $uploaded) &&
3624: (($home ne '') && ($home ne 'no_host'))) {
3625: my @ids=¤t_machine_ids();
3626: unless (grep(/^\Q$home\E$/,@ids)) {
3627: $switchserver=1;
3628: }
3629: }
3630: }
3631: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3632: }
3633:
3634: sub is_course_upload {
3635: my ($file,$cnum,$cdom) = @_;
3636: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3637: $uploadpath =~ s{^\/}{};
3638: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3639: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3640: return 1;
3641: }
3642: return;
3643: }
3644:
3645: sub in_course {
3646: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3647: if ($hideprivileged) {
3648: my $skipuser;
3649: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3650: my @possdoms = ($cdom);
3651: if ($coursehash{'checkforpriv'}) {
3652: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3653: }
3654: if (&privileged($uname,$udom,\@possdoms)) {
3655: $skipuser = 1;
3656: if ($coursehash{'nothideprivileged'}) {
3657: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3658: my $user;
3659: if ($item =~ /:/) {
3660: $user = $item;
3661: } else {
3662: $user = join(':',split(/[\@]/,$item));
3663: }
3664: if ($user eq $uname.':'.$udom) {
3665: undef($skipuser);
3666: last;
3667: }
3668: }
3669: }
3670: if ($skipuser) {
3671: return 0;
3672: }
3673: }
3674: }
3675: $type ||= 'any';
3676: if (!defined($cdom) || !defined($cnum)) {
3677: my $cid = $env{'request.course.id'};
3678: $cdom = $env{'course.'.$cid.'.domain'};
3679: $cnum = $env{'course.'.$cid.'.num'};
3680: }
3681: my $typesref;
3682: if (($type eq 'any') || ($type eq 'all')) {
3683: $typesref = ['active','previous','future'];
3684: } elsif ($type eq 'previous' || $type eq 'future') {
3685: $typesref = [$type];
3686: }
3687: my %roles = &get_my_roles($uname,$udom,'userroles',
3688: $typesref,undef,[$cdom]);
3689: my ($tmp) = keys(%roles);
3690: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3691: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3692: if (@course_roles > 0) {
3693: return 1;
3694: }
3695: return 0;
3696: }
3697:
3698: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3699: # input: action, courseID, current domain, intended
3700: # path to file, source of file, instruction to parse file for objects,
3701: # ref to hash for embedded objects,
3702: # ref to hash for codebase of java objects.
3703: # reference to scalar to accommodate mime type determined
3704: # from File::MMagic if $parser = parse.
3705: #
3706: # output: url to file (if action was uploaddoc),
3707: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3708: #
3709: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3710: # course.
3711: #
3712: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3713: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3714: # course's home server.
3715: #
3716: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3717: # be copied from $source (current location) to
3718: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3719: # and will then be copied to
3720: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3721: # course's home server.
3722: #
3723: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3724: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3725: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3726: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3727: # in course's home server.
3728: #
3729:
3730: sub process_coursefile {
3731: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3732: $mimetype)=@_;
3733: my $fetchresult;
3734: my $home=&homeserver($docuname,$docudom);
3735: if ($action eq 'propagate') {
3736: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3737: $home);
3738: } else {
3739: my $fpath = '';
3740: my $fname = $file;
3741: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3742: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3743: my $filepath = &build_filepath($fpath);
3744: if ($action eq 'copy') {
3745: if ($source eq '') {
3746: $fetchresult = 'no source file';
3747: return $fetchresult;
3748: } else {
3749: my $destination = $filepath.'/'.$fname;
3750: rename($source,$destination);
3751: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3752: $home);
3753: }
3754: } elsif ($action eq 'uploaddoc') {
3755: open(my $fh,'>',$filepath.'/'.$fname);
3756: print $fh $env{'form.'.$source};
3757: close($fh);
3758: if ($parser eq 'parse') {
3759: my $mm = new File::MMagic;
3760: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3761: if ($type eq 'text/html') {
3762: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3763: unless ($parse_result eq 'ok') {
3764: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3765: }
3766: }
3767: if (ref($mimetype)) {
3768: $$mimetype = $type;
3769: }
3770: }
3771: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3772: $home);
3773: if ($fetchresult eq 'ok') {
3774: return '/uploaded/'.$fpath.'/'.$fname;
3775: } else {
3776: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3777: ' to host '.$home.': '.$fetchresult);
3778: return '/adm/notfound.html';
3779: }
3780: }
3781: }
3782: unless ( $fetchresult eq 'ok') {
3783: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3784: ' to host '.$home.': '.$fetchresult);
3785: }
3786: return $fetchresult;
3787: }
3788:
3789: sub build_filepath {
3790: my ($fpath) = @_;
3791: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3792: unless ($fpath eq '') {
3793: my @parts=split('/',$fpath);
3794: foreach my $part (@parts) {
3795: $filepath.= '/'.$part;
3796: if ((-e $filepath)!=1) {
3797: mkdir($filepath,0777);
3798: }
3799: }
3800: }
3801: return $filepath;
3802: }
3803:
3804: sub store_edited_file {
3805: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3806: my $file = $primary_url;
3807: $file =~ s#^/uploaded/$docudom/$docuname/##;
3808: my $fpath = '';
3809: my $fname = $file;
3810: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3811: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3812: my $filepath = &build_filepath($fpath);
3813: open(my $fh,'>',$filepath.'/'.$fname);
3814: print $fh $content;
3815: close($fh);
3816: my $home=&homeserver($docuname,$docudom);
3817: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3818: $home);
3819: if ($$fetchresult eq 'ok') {
3820: return '/uploaded/'.$fpath.'/'.$fname;
3821: } else {
3822: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3823: ' to host '.$home.': '.$$fetchresult);
3824: return '/adm/notfound.html';
3825: }
3826: }
3827:
3828: sub clean_filename {
3829: my ($fname,$args)=@_;
3830: # Replace Windows backslashes by forward slashes
3831: $fname=~s/\\/\//g;
3832: if (!$args->{'keep_path'}) {
3833: # Get rid of everything but the actual filename
3834: $fname=~s/^.*\/([^\/]+)$/$1/;
3835: }
3836: # Replace spaces by underscores
3837: $fname=~s/\s+/\_/g;
3838: # Replace all other weird characters by nothing
3839: $fname=~s{[^/\w\.\-]}{}g;
3840: # Replace all .\d. sequences with _\d. so they no longer look like version
3841: # numbers
3842: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3843: return $fname;
3844: }
3845: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3846: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3847: # image with the same aspect ratio as the original, but with dimensions which do
3848: # not exceed $resizewidth and $resizeheight.
3849:
3850: sub resizeImage {
3851: my ($img_path,$resizewidth,$resizeheight) = @_;
3852: my $ima = Image::Magick->new;
3853: my $resized;
3854: if (-e $img_path) {
3855: $ima->Read($img_path);
3856: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3857: my $width = $ima->Get('width');
3858: my $height = $ima->Get('height');
3859: if ($width > $resizewidth) {
3860: my $factor = $width/$resizewidth;
3861: my $newheight = $height/$factor;
3862: $ima->Scale(width=>$resizewidth,height=>$newheight);
3863: $resized = 1;
3864: }
3865: }
3866: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3867: my $width = $ima->Get('width');
3868: my $height = $ima->Get('height');
3869: if ($height > $resizeheight) {
3870: my $factor = $height/$resizeheight;
3871: my $newwidth = $width/$factor;
3872: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3873: $resized = 1;
3874: }
3875: }
3876: if ($resized) {
3877: $ima->Write($img_path);
3878: }
3879: }
3880: return;
3881: }
3882:
3883: # --------------- Take an uploaded file and put it into the userfiles directory
3884: # input: $formname - the contents of the file are in $env{"form.$formname"}
3885: # the desired filename is in $env{"form.$formname.filename"}
3886: # $context - possible values: coursedoc, existingfile, overwrite,
3887: # canceloverwrite, or ''.
3888: # if 'coursedoc': upload to the current course
3889: # if 'existingfile': write file to tmp/overwrites directory
3890: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3891: # $context is passed as argument to &finishuserfileupload
3892: # $subdir - directory in userfile to store the file into
3893: # $parser - instruction to parse file for objects ($parser = parse)
3894: # $allfiles - reference to hash for embedded objects
3895: # $codebase - reference to hash for codebase of java objects
3896: # $desuname - username for permanent storage of uploaded file
3897: # $dsetudom - domain for permanaent storage of uploaded file
3898: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3899: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3900: # $resizewidth - width (pixels) to which to resize uploaded image
3901: # $resizeheight - height (pixels) to which to resize uploaded image
3902: # $mimetype - reference to scalar to accommodate mime type determined
3903: # from File::MMagic.
3904: #
3905: # output: url of file in userspace, or error: <message>
3906: # or /adm/notfound.html if failure to upload occurse
3907:
3908: sub userfileupload {
3909: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3910: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3911: if (!defined($subdir)) { $subdir='unknown'; }
3912: my $fname=$env{'form.'.$formname.'.filename'};
3913: $fname=&clean_filename($fname);
3914: # See if there is anything left
3915: unless ($fname) { return 'error: no uploaded file'; }
3916: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3917: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3918: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3919: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3920: my $now = time;
3921: my $filepath;
3922: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3923: $filepath = 'tmp/helprequests/'.$now;
3924: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3925: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3926: '_'.$env{'user.domain'}.'/pending';
3927: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3928: my ($docuname,$docudom);
3929: if ($destudom =~ /^$match_domain$/) {
3930: $docudom = $destudom;
3931: } else {
3932: $docudom = $env{'user.domain'};
3933: }
3934: if ($destuname =~ /^$match_username$/) {
3935: $docuname = $destuname;
3936: } else {
3937: $docuname = $env{'user.name'};
3938: }
3939: if (exists($env{'form.group'})) {
3940: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3941: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3942: }
3943: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3944: if ($context eq 'canceloverwrite') {
3945: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3946: if (-e $tempfile) {
3947: my @info = stat($tempfile);
3948: if ($info[9] eq $env{'form.timestamp'}) {
3949: unlink($tempfile);
3950: }
3951: }
3952: return;
3953: }
3954: }
3955: # Create the directory if not present
3956: my @parts=split(/\//,$filepath);
3957: my $fullpath = $perlvar{'lonDaemons'};
3958: for (my $i=0;$i<@parts;$i++) {
3959: $fullpath .= '/'.$parts[$i];
3960: if ((-e $fullpath)!=1) {
3961: mkdir($fullpath,0777);
3962: }
3963: }
3964: open(my $fh,'>',$fullpath.'/'.$fname);
3965: print $fh $env{'form.'.$formname};
3966: close($fh);
3967: if ($context eq 'existingfile') {
3968: my @info = stat($fullpath.'/'.$fname);
3969: return ($fullpath.'/'.$fname,$info[9]);
3970: } else {
3971: return $fullpath.'/'.$fname;
3972: }
3973: }
3974: if ($subdir eq 'scantron') {
3975: $fname = 'scantron_orig_'.$fname;
3976: } else {
3977: $fname="$subdir/$fname";
3978: }
3979: if ($context eq 'coursedoc') {
3980: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3981: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3982: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3983: return &finishuserfileupload($docuname,$docudom,
3984: $formname,$fname,$parser,$allfiles,
3985: $codebase,$thumbwidth,$thumbheight,
3986: $resizewidth,$resizeheight,$context,$mimetype);
3987: } else {
3988: if ($env{'form.folder'}) {
3989: $fname=$env{'form.folder'}.'/'.$fname;
3990: }
3991: return &process_coursefile('uploaddoc',$docuname,$docudom,
3992: $fname,$formname,$parser,
3993: $allfiles,$codebase,$mimetype);
3994: }
3995: } elsif (defined($destuname)) {
3996: my $docuname=$destuname;
3997: my $docudom=$destudom;
3998: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3999: $parser,$allfiles,$codebase,
4000: $thumbwidth,$thumbheight,
4001: $resizewidth,$resizeheight,$context,$mimetype);
4002: } else {
4003: my $docuname=$env{'user.name'};
4004: my $docudom=$env{'user.domain'};
4005: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4006: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4007: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4008: }
4009: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4010: $parser,$allfiles,$codebase,
4011: $thumbwidth,$thumbheight,
4012: $resizewidth,$resizeheight,$context,$mimetype);
4013: }
4014: }
4015:
4016: sub finishuserfileupload {
4017: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4018: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4019: my $path=$docudom.'/'.$docuname.'/';
4020: my $filepath=$perlvar{'lonDocRoot'};
4021:
4022: my ($fnamepath,$file,$fetchthumb);
4023: $file=$fname;
4024: if ($fname=~m|/|) {
4025: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4026: $path.=$fnamepath.'/';
4027: }
4028: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4029: my $count;
4030: for ($count=4;$count<=$#parts;$count++) {
4031: $filepath.="/$parts[$count]";
4032: if ((-e $filepath)!=1) {
4033: mkdir($filepath,0777);
4034: }
4035: }
4036:
4037: # Save the file
4038: {
4039: if (!open(FH,'>',$filepath.'/'.$file)) {
4040: &logthis('Failed to create '.$filepath.'/'.$file);
4041: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4042: return '/adm/notfound.html';
4043: }
4044: if ($context eq 'overwrite') {
4045: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4046: my $target = $filepath.'/'.$file;
4047: if (-e $source) {
4048: my @info = stat($source);
4049: if ($info[9] eq $env{'form.timestamp'}) {
4050: unless (&File::Copy::move($source,$target)) {
4051: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4052: return "Moving from $source failed";
4053: }
4054: } else {
4055: return "Temporary file: $source had unexpected date/time for last modification";
4056: }
4057: } else {
4058: return "Temporary file: $source missing";
4059: }
4060: } elsif (!print FH ($env{'form.'.$formname})) {
4061: &logthis('Failed to write to '.$filepath.'/'.$file);
4062: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4063: return '/adm/notfound.html';
4064: }
4065: close(FH);
4066: if ($resizewidth && $resizeheight) {
4067: my $mm = new File::MMagic;
4068: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4069: if ($mime_type =~ m{^image/}) {
4070: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4071: }
4072: }
4073: }
4074: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4075: if (ref($mimetype)) {
4076: if ($$mimetype eq '') {
4077: my $mm = new File::MMagic;
4078: my $type = $mm->checktype_filename($filepath.'/'.$file);
4079: $$mimetype = $type;
4080: }
4081: }
4082: }
4083: if ($parser eq 'parse') {
4084: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4085: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4086: $allfiles,$codebase);
4087: unless ($parse_result eq 'ok') {
4088: &logthis('Failed to parse '.$filepath.$file.
4089: ' for embedded media: '.$parse_result);
4090: }
4091: }
4092: }
4093: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4094: my $input = $filepath.'/'.$file;
4095: my $output = $filepath.'/'.'tn-'.$file;
4096: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4097: my @args = ('convert','-sample',$thumbsize,$input,$output);
4098: system({$args[0]} @args);
4099: if (-e $filepath.'/'.'tn-'.$file) {
4100: $fetchthumb = 1;
4101: }
4102: }
4103:
4104: # Notify homeserver to grep it
4105: #
4106: my $docuhome=&homeserver($docuname,$docudom);
4107: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4108: if ($fetchresult eq 'ok') {
4109: if ($fetchthumb) {
4110: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4111: if ($thumbresult ne 'ok') {
4112: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4113: $docuhome.': '.$thumbresult);
4114: }
4115: }
4116: #
4117: # Return the URL to it
4118: return '/uploaded/'.$path.$file;
4119: } else {
4120: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4121: ': '.$fetchresult);
4122: return '/adm/notfound.html';
4123: }
4124: }
4125:
4126: sub extract_embedded_items {
4127: my ($fullpath,$allfiles,$codebase,$content) = @_;
4128: my @state = ();
4129: my (%lastids,%related,%shockwave,%flashvars);
4130: my %javafiles = (
4131: codebase => '',
4132: code => '',
4133: archive => ''
4134: );
4135: my %mediafiles = (
4136: src => '',
4137: movie => '',
4138: );
4139: my $p;
4140: if ($content) {
4141: $p = HTML::LCParser->new($content);
4142: } else {
4143: $p = HTML::LCParser->new($fullpath);
4144: }
4145: while (my $t=$p->get_token()) {
4146: if ($t->[0] eq 'S') {
4147: my ($tagname, $attr) = ($t->[1],$t->[2]);
4148: push(@state, $tagname);
4149: if (lc($tagname) eq 'allow') {
4150: &add_filetype($allfiles,$attr->{'src'},'src');
4151: }
4152: if (lc($tagname) eq 'img') {
4153: &add_filetype($allfiles,$attr->{'src'},'src');
4154: }
4155: if (lc($tagname) eq 'a') {
4156: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4157: &add_filetype($allfiles,$attr->{'href'},'href');
4158: }
4159: }
4160: if (lc($tagname) eq 'script') {
4161: my $src;
4162: if ($attr->{'archive'} =~ /\.jar$/i) {
4163: &add_filetype($allfiles,$attr->{'archive'},'archive');
4164: } else {
4165: if ($attr->{'src'} ne '') {
4166: $src = $attr->{'src'};
4167: &add_filetype($allfiles,$src,'src');
4168: }
4169: }
4170: my $text = $p->get_trimmed_text();
4171: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4172: my @swfargs = split(/,/,$1);
4173: foreach my $item (@swfargs) {
4174: $item =~ s/["']//g;
4175: $item =~ s/^\s+//;
4176: $item =~ s/\s+$//;
4177: }
4178: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4179: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4180: push(@{$related{$swfargs[0]}},$swfargs[2]);
4181: } else {
4182: $related{$swfargs[0]} = [$swfargs[2]];
4183: }
4184: }
4185: }
4186: }
4187: if (lc($tagname) eq 'link') {
4188: if (lc($attr->{'rel'}) eq 'stylesheet') {
4189: &add_filetype($allfiles,$attr->{'href'},'href');
4190: }
4191: }
4192: if (lc($tagname) eq 'object' ||
4193: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4194: foreach my $item (keys(%javafiles)) {
4195: $javafiles{$item} = '';
4196: }
4197: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4198: $lastids{lc($tagname)} = $attr->{'id'};
4199: }
4200: }
4201: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4202: my $name = lc($attr->{'name'});
4203: foreach my $item (keys(%javafiles)) {
4204: if ($name eq $item) {
4205: $javafiles{$item} = $attr->{'value'};
4206: last;
4207: }
4208: }
4209: my $pathfrom;
4210: foreach my $item (keys(%mediafiles)) {
4211: if ($name eq $item) {
4212: $pathfrom = $attr->{'value'};
4213: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4214: &add_filetype($allfiles,$pathfrom,$name);
4215: last;
4216: }
4217: }
4218: if ($name eq 'flashvars') {
4219: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4220: }
4221: if ($pathfrom ne '') {
4222: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4223: $pathfrom);
4224: }
4225: }
4226: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4227: foreach my $item (keys(%javafiles)) {
4228: if ($attr->{$item}) {
4229: $javafiles{$item} = $attr->{$item};
4230: last;
4231: }
4232: }
4233: foreach my $item (keys(%mediafiles)) {
4234: if ($attr->{$item}) {
4235: &add_filetype($allfiles,$attr->{$item},$item);
4236: last;
4237: }
4238: }
4239: if (lc($tagname) eq 'embed') {
4240: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4241: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4242: $attr->{'src'});
4243: }
4244: }
4245: }
4246: if (lc($tagname) eq 'iframe') {
4247: my $src = $attr->{'src'} ;
4248: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4249: &add_filetype($allfiles,$src,'src');
4250: } elsif ($src =~ m{^/}) {
4251: if ($env{'request.course.id'}) {
4252: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4253: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4254: my $url = &hreflocation('',$fullpath);
4255: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4256: my $relpath = $1;
4257: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4258: &add_filetype($allfiles,$1,'src');
4259: }
4260: }
4261: }
4262: }
4263: }
4264: if ($t->[4] =~ m{/>$}) {
4265: pop(@state);
4266: }
4267: } elsif ($t->[0] eq 'E') {
4268: my ($tagname) = ($t->[1]);
4269: if ($javafiles{'codebase'} ne '') {
4270: $javafiles{'codebase'} .= '/';
4271: }
4272: if (lc($tagname) eq 'applet' ||
4273: lc($tagname) eq 'object' ||
4274: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4275: ) {
4276: foreach my $item (keys(%javafiles)) {
4277: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4278: my $file=$javafiles{'codebase'}.$javafiles{$item};
4279: &add_filetype($allfiles,$file,$item);
4280: }
4281: }
4282: }
4283: pop @state;
4284: }
4285: }
4286: foreach my $id (sort(keys(%flashvars))) {
4287: if ($shockwave{$id} ne '') {
4288: my @pairs = split(/\&/,$flashvars{$id});
4289: foreach my $pair (@pairs) {
4290: my ($key,$value) = split(/\=/,$pair);
4291: if ($key eq 'thumb') {
4292: &add_filetype($allfiles,$value,$key);
4293: } elsif ($key eq 'content') {
4294: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4295: my ($ext) = ($value =~ /\.([^.]+)$/);
4296: if ($ext ne '') {
4297: &add_filetype($allfiles,$path.$value,$ext);
4298: }
4299: }
4300: }
4301: }
4302: }
4303: return 'ok';
4304: }
4305:
4306: sub add_filetype {
4307: my ($allfiles,$file,$type)=@_;
4308: if (exists($allfiles->{$file})) {
4309: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4310: push(@{$allfiles->{$file}}, &escape($type));
4311: }
4312: } else {
4313: @{$allfiles->{$file}} = (&escape($type));
4314: }
4315: }
4316:
4317: sub embedded_dependency {
4318: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4319: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4320: if (($identifier ne '') &&
4321: (ref($related->{$identifier}) eq 'ARRAY') &&
4322: ($pathfrom ne '')) {
4323: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4324: foreach my $dep (@{$related->{$identifier}}) {
4325: &add_filetype($allfiles,$path.$dep,'object');
4326: }
4327: }
4328: }
4329: return;
4330: }
4331:
4332: sub removeuploadedurl {
4333: my ($url)=@_;
4334: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4335: return &removeuserfile($uname,$udom,$fname);
4336: }
4337:
4338: sub removeuserfile {
4339: my ($docuname,$docudom,$fname)=@_;
4340: my $home=&homeserver($docuname,$docudom);
4341: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4342: if ($result eq 'ok') {
4343: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4344: my $metafile = $fname.'.meta';
4345: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4346: my $url = "/uploaded/$docudom/$docuname/$fname";
4347: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4348: my $sqlresult =
4349: &update_portfolio_table($docuname,$docudom,$file,
4350: 'portfolio_metadata',$group,
4351: 'delete');
4352: }
4353: }
4354: return $result;
4355: }
4356:
4357: sub mkdiruserfile {
4358: my ($docuname,$docudom,$dir)=@_;
4359: my $home=&homeserver($docuname,$docudom);
4360: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4361: }
4362:
4363: sub renameuserfile {
4364: my ($docuname,$docudom,$old,$new)=@_;
4365: my $home=&homeserver($docuname,$docudom);
4366: my $result = &reply("renameuserfile:$docudom:$docuname:".
4367: &escape("$old").':'.&escape("$new"),$home);
4368: if ($result eq 'ok') {
4369: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4370: my $oldmeta = $old.'.meta';
4371: my $newmeta = $new.'.meta';
4372: my $metaresult =
4373: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4374: my $url = "/uploaded/$docudom/$docuname/$old";
4375: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4376: my $sqlresult =
4377: &update_portfolio_table($docuname,$docudom,$file,
4378: 'portfolio_metadata',$group,
4379: 'delete');
4380: }
4381: }
4382: return $result;
4383: }
4384:
4385: # ------------------------------------------------------------------------- Log
4386:
4387: sub log {
4388: my ($dom,$nam,$hom,$what)=@_;
4389: return critical("log:$dom:$nam:$what",$hom);
4390: }
4391:
4392: # ------------------------------------------------------------------ Course Log
4393: #
4394: # This routine flushes several buffers of non-mission-critical nature
4395: #
4396:
4397: sub flushcourselogs {
4398: &logthis('Flushing log buffers');
4399: #
4400: # course logs
4401: # This is a log of all transactions in a course, which can be used
4402: # for data mining purposes
4403: #
4404: # It also collects the courseid database, which lists last transaction
4405: # times and course titles for all courseids
4406: #
4407: my %courseidbuffer=();
4408: foreach my $crsid (keys(%courselogs)) {
4409: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4410: &escape($courselogs{$crsid}),
4411: $coursehombuf{$crsid}) eq 'ok') {
4412: delete $courselogs{$crsid};
4413: } else {
4414: &logthis('Failed to flush log buffer for '.$crsid);
4415: if (length($courselogs{$crsid})>40000) {
4416: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4417: " exceeded maximum size, deleting.</font>");
4418: delete $courselogs{$crsid};
4419: }
4420: }
4421: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4422: 'description' => $coursedescrbuf{$crsid},
4423: 'inst_code' => $courseinstcodebuf{$crsid},
4424: 'type' => $coursetypebuf{$crsid},
4425: 'owner' => $courseownerbuf{$crsid},
4426: };
4427: }
4428: #
4429: # Write course id database (reverse lookup) to homeserver of courses
4430: # Is used in pickcourse
4431: #
4432: foreach my $crs_home (keys(%courseidbuffer)) {
4433: my $response = &courseidput(&host_domain($crs_home),
4434: $courseidbuffer{$crs_home},
4435: $crs_home,'timeonly');
4436: }
4437: #
4438: # File accesses
4439: # Writes to the dynamic metadata of resources to get hit counts, etc.
4440: #
4441: foreach my $entry (keys(%accesshash)) {
4442: if ($entry =~ /___count$/) {
4443: my ($dom,$name);
4444: ($dom,$name,undef)=
4445: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4446: if (! defined($dom) || $dom eq '' ||
4447: ! defined($name) || $name eq '') {
4448: my $cid = $env{'request.course.id'};
4449: $dom = $env{'request.'.$cid.'.domain'};
4450: $name = $env{'request.'.$cid.'.num'};
4451: }
4452: my $value = $accesshash{$entry};
4453: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4454: my %temphash=($url => $value);
4455: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4456: if ($result eq 'ok') {
4457: delete $accesshash{$entry};
4458: }
4459: } else {
4460: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4461: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4462: my %temphash=($entry => $accesshash{$entry});
4463: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4464: delete $accesshash{$entry};
4465: }
4466: }
4467: }
4468: #
4469: # Roles
4470: # Reverse lookup of user roles for course faculty/staff and co-authorship
4471: #
4472: foreach my $entry (keys(%userrolehash)) {
4473: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4474: split(/\:/,$entry);
4475: if (&Apache::lonnet::put('nohist_userroles',
4476: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4477: $rudom,$runame) eq 'ok') {
4478: delete $userrolehash{$entry};
4479: }
4480: }
4481: #
4482: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4483: #
4484: my %domrolebuffer = ();
4485: foreach my $entry (keys(%domainrolehash)) {
4486: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4487: if ($domrolebuffer{$rudom}) {
4488: $domrolebuffer{$rudom}.='&'.&escape($entry).
4489: '='.&escape($domainrolehash{$entry});
4490: } else {
4491: $domrolebuffer{$rudom}.=&escape($entry).
4492: '='.&escape($domainrolehash{$entry});
4493: }
4494: delete $domainrolehash{$entry};
4495: }
4496: foreach my $dom (keys(%domrolebuffer)) {
4497: my %servers;
4498: if (defined(&domain($dom,'primary'))) {
4499: my $primary=&domain($dom,'primary');
4500: my $hostname=&hostname($primary);
4501: $servers{$primary} = $hostname;
4502: } else {
4503: %servers = &get_servers($dom,'library');
4504: }
4505: foreach my $tryserver (keys(%servers)) {
4506: if (&reply('domroleput:'.$dom.':'.
4507: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4508: last;
4509: } else {
4510: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4511: }
4512: }
4513: }
4514: $dumpcount++;
4515: }
4516:
4517: sub courselog {
4518: my $what=shift;
4519: $what=time.':'.$what;
4520: unless ($env{'request.course.id'}) { return ''; }
4521: $coursedombuf{$env{'request.course.id'}}=
4522: $env{'course.'.$env{'request.course.id'}.'.domain'};
4523: $coursenumbuf{$env{'request.course.id'}}=
4524: $env{'course.'.$env{'request.course.id'}.'.num'};
4525: $coursehombuf{$env{'request.course.id'}}=
4526: $env{'course.'.$env{'request.course.id'}.'.home'};
4527: $coursedescrbuf{$env{'request.course.id'}}=
4528: $env{'course.'.$env{'request.course.id'}.'.description'};
4529: $courseinstcodebuf{$env{'request.course.id'}}=
4530: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4531: $courseownerbuf{$env{'request.course.id'}}=
4532: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4533: $coursetypebuf{$env{'request.course.id'}}=
4534: $env{'course.'.$env{'request.course.id'}.'.type'};
4535: if (defined $courselogs{$env{'request.course.id'}}) {
4536: $courselogs{$env{'request.course.id'}}.='&'.$what;
4537: } else {
4538: $courselogs{$env{'request.course.id'}}.=$what;
4539: }
4540: if (length($courselogs{$env{'request.course.id'}})>4048) {
4541: &flushcourselogs();
4542: }
4543: }
4544:
4545: sub courseacclog {
4546: my $fnsymb=shift;
4547: unless ($env{'request.course.id'}) { return ''; }
4548: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4549: if ($fnsymb=~/$LONCAPA::assess_re/) {
4550: $what.=':POST';
4551: # FIXME: Probably ought to escape things....
4552: foreach my $key (keys(%env)) {
4553: if ($key=~/^form\.(.*)/) {
4554: my $formitem = $1;
4555: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4556: $what.=':'.$formitem.'='.$env{$key};
4557: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4558: $what.=':'.$formitem.'='.$env{$key};
4559: }
4560: }
4561: }
4562: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4563: # FIXME: We should not be depending on a form parameter that someone
4564: # editing lonsearchcat.pm might change in the future.
4565: if ($env{'form.phase'} eq 'course_search') {
4566: $what.= ':POST';
4567: # FIXME: Probably ought to escape things....
4568: foreach my $element ('courseexp','crsfulltext','crsrelated',
4569: 'crsdiscuss') {
4570: $what.=':'.$element.'='.$env{'form.'.$element};
4571: }
4572: }
4573: }
4574: &courselog($what);
4575: }
4576:
4577: sub countacc {
4578: my $url=&declutter(shift);
4579: return if (! defined($url) || $url eq '');
4580: unless ($env{'request.course.id'}) { return ''; }
4581: #
4582: # Mark that this url was used in this course
4583: #
4584: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4585: #
4586: # Increase the access count for this resource in this child process
4587: #
4588: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4589: $accesshash{$key}++;
4590: }
4591:
4592: sub linklog {
4593: my ($from,$to)=@_;
4594: $from=&declutter($from);
4595: $to=&declutter($to);
4596: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4597: $accesshash{$to.'___'.$from.'___goto'}=1;
4598: }
4599:
4600: sub statslog {
4601: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4602: if ($users<2) { return; }
4603: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4604: 'course' => $env{'request.course.id'},
4605: 'sections' => '"all"',
4606: 'num_students' => $users,
4607: 'part' => $part,
4608: 'symb' => $symb,
4609: 'mean_tries' => $av_attempts,
4610: 'deg_of_diff' => $degdiff});
4611: foreach my $key (keys(%dynstore)) {
4612: $accesshash{$key}=$dynstore{$key};
4613: }
4614: }
4615:
4616: sub userrolelog {
4617: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4618: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4619: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4620: $userrolehash
4621: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4622: =$tend.':'.$tstart;
4623: }
4624: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4625: $userrolehash
4626: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4627: =$tend.':'.$tstart;
4628: }
4629: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4630: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4631: $domainrolehash
4632: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4633: = $tend.':'.$tstart;
4634: }
4635: }
4636:
4637: sub courserolelog {
4638: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4639: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4640: my $cdom = $1;
4641: my $cnum = $2;
4642: my $sec = $3;
4643: my $namespace = 'rolelog';
4644: my %storehash = (
4645: role => $trole,
4646: start => $tstart,
4647: end => $tend,
4648: selfenroll => $selfenroll,
4649: context => $context,
4650: );
4651: if ($trole eq 'gr') {
4652: $namespace = 'groupslog';
4653: $storehash{'group'} = $sec;
4654: } else {
4655: $storehash{'section'} = $sec;
4656: }
4657: &write_log('course',$namespace,\%storehash,$delflag,$username,
4658: $domain,$cnum,$cdom);
4659: if (($trole ne 'st') || ($sec ne '')) {
4660: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4661: }
4662: }
4663: return;
4664: }
4665:
4666: sub domainrolelog {
4667: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4668: if ($area =~ m{^/($match_domain)/$}) {
4669: my $cdom = $1;
4670: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4671: my $namespace = 'rolelog';
4672: my %storehash = (
4673: role => $trole,
4674: start => $tstart,
4675: end => $tend,
4676: context => $context,
4677: );
4678: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4679: $domain,$domconfiguser,$cdom);
4680: }
4681: return;
4682:
4683: }
4684:
4685: sub coauthorrolelog {
4686: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4687: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4688: my $audom = $1;
4689: my $auname = $2;
4690: my $namespace = 'rolelog';
4691: my %storehash = (
4692: role => $trole,
4693: start => $tstart,
4694: end => $tend,
4695: context => $context,
4696: );
4697: &write_log('author',$namespace,\%storehash,$delflag,$username,
4698: $domain,$auname,$audom);
4699: }
4700: return;
4701: }
4702:
4703: sub get_course_adv_roles {
4704: my ($cid,$codes) = @_;
4705: $cid=$env{'request.course.id'} unless (defined($cid));
4706: my %coursehash=&coursedescription($cid);
4707: my $crstype = &Apache::loncommon::course_type($cid);
4708: my %nothide=();
4709: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4710: if ($user !~ /:/) {
4711: $nothide{join(':',split(/[\@]/,$user))}=1;
4712: } else {
4713: $nothide{$user}=1;
4714: }
4715: }
4716: my @possdoms = ($coursehash{'domain'});
4717: if ($coursehash{'checkforpriv'}) {
4718: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4719: }
4720: my %returnhash=();
4721: my %dumphash=
4722: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4723: my $now=time;
4724: my %privileged;
4725: foreach my $entry (keys(%dumphash)) {
4726: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4727: if (($tstart) && ($tstart<0)) { next; }
4728: if (($tend) && ($tend<$now)) { next; }
4729: if (($tstart) && ($now<$tstart)) { next; }
4730: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4731: if ($username eq '' || $domain eq '') { next; }
4732: if ((&privileged($username,$domain,\@possdoms)) &&
4733: (!$nothide{$username.':'.$domain})) { next; }
4734: if ($role eq 'cr') { next; }
4735: if ($codes) {
4736: if ($section) { $role .= ':'.$section; }
4737: if ($returnhash{$role}) {
4738: $returnhash{$role}.=','.$username.':'.$domain;
4739: } else {
4740: $returnhash{$role}=$username.':'.$domain;
4741: }
4742: } else {
4743: my $key=&plaintext($role,$crstype);
4744: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4745: if ($returnhash{$key}) {
4746: $returnhash{$key}.=','.$username.':'.$domain;
4747: } else {
4748: $returnhash{$key}=$username.':'.$domain;
4749: }
4750: }
4751: }
4752: return %returnhash;
4753: }
4754:
4755: sub get_my_roles {
4756: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4757: unless (defined($uname)) { $uname=$env{'user.name'}; }
4758: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4759: my (%dumphash,%nothide);
4760: if ($context eq 'userroles') {
4761: %dumphash = &dump('roles',$udom,$uname);
4762: } else {
4763: %dumphash = &dump('nohist_userroles',$udom,$uname);
4764: if ($hidepriv) {
4765: my %coursehash=&coursedescription($udom.'_'.$uname);
4766: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4767: if ($user !~ /:/) {
4768: $nothide{join(':',split(/[\@]/,$user))} = 1;
4769: } else {
4770: $nothide{$user} = 1;
4771: }
4772: }
4773: }
4774: }
4775: my %returnhash=();
4776: my $now=time;
4777: my %privileged;
4778: foreach my $entry (keys(%dumphash)) {
4779: my ($role,$tend,$tstart);
4780: if ($context eq 'userroles') {
4781: next if ($entry =~ /^rolesdef/);
4782: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4783: } else {
4784: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4785: }
4786: if (($tstart) && ($tstart<0)) { next; }
4787: my $status = 'active';
4788: if (($tend) && ($tend<=$now)) {
4789: $status = 'previous';
4790: }
4791: if (($tstart) && ($now<$tstart)) {
4792: $status = 'future';
4793: }
4794: if (ref($types) eq 'ARRAY') {
4795: if (!grep(/^\Q$status\E$/,@{$types})) {
4796: next;
4797: }
4798: } else {
4799: if ($status ne 'active') {
4800: next;
4801: }
4802: }
4803: my ($rolecode,$username,$domain,$section,$area);
4804: if ($context eq 'userroles') {
4805: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4806: (undef,$domain,$username,$section) = split(/\//,$area);
4807: } else {
4808: ($role,$username,$domain,$section) = split(/\:/,$entry);
4809: }
4810: if (ref($roledoms) eq 'ARRAY') {
4811: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4812: next;
4813: }
4814: }
4815: if (ref($roles) eq 'ARRAY') {
4816: if (!grep(/^\Q$role\E$/,@{$roles})) {
4817: if ($role =~ /^cr\//) {
4818: if (!grep(/^cr$/,@{$roles})) {
4819: next;
4820: }
4821: } elsif ($role =~ /^gr\//) {
4822: if (!grep(/^gr$/,@{$roles})) {
4823: next;
4824: }
4825: } else {
4826: next;
4827: }
4828: }
4829: }
4830: if ($hidepriv) {
4831: my @privroles = ('dc','su');
4832: if ($context eq 'userroles') {
4833: next if (grep(/^\Q$role\E$/,@privroles));
4834: } else {
4835: my $possdoms = [$domain];
4836: if (ref($roledoms) eq 'ARRAY') {
4837: push(@{$possdoms},@{$roledoms});
4838: }
4839: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4840: if (!$nothide{$username.':'.$domain}) {
4841: next;
4842: }
4843: }
4844: }
4845: }
4846: if ($withsec) {
4847: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4848: $tstart.':'.$tend;
4849: } else {
4850: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4851: }
4852: }
4853: return %returnhash;
4854: }
4855:
4856: sub get_all_adhocroles {
4857: my ($dom) = @_;
4858: my @roles_by_num = ();
4859: my %domdefaults = &get_domain_defaults($dom);
4860: my (%description,%access_in_dom,%access_info);
4861: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4862: my $count = 0;
4863: my %domcurrent = %{$domdefaults{'adhocroles'}};
4864: my %ordered;
4865: foreach my $role (sort(keys(%domcurrent))) {
4866: my ($order,$desc,$access_in_dom);
4867: if (ref($domcurrent{$role}) eq 'HASH') {
4868: $order = $domcurrent{$role}{'order'};
4869: $desc = $domcurrent{$role}{'desc'};
4870: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4871: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4872: }
4873: if ($order eq '') {
4874: $order = $count;
4875: }
4876: $ordered{$order} = $role;
4877: if ($desc ne '') {
4878: $description{$role} = $desc;
4879: } else {
4880: $description{$role}= $role;
4881: }
4882: $count++;
4883: }
4884: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4885: push(@roles_by_num,$ordered{$item});
4886: }
4887: }
4888: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4889: }
4890:
4891: sub get_my_adhocroles {
4892: my ($cid,$checkreg) = @_;
4893: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4894: if ($env{'request.course.id'} eq $cid) {
4895: $cdom = $env{'course.'.$cid.'.domain'};
4896: $cnum = $env{'course.'.$cid.'.num'};
4897: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4898: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4899: $cdom = $1;
4900: $cnum = $2;
4901: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4902: $cdom,$cnum);
4903: }
4904: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4905: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4906: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4907: if ($rosterhash{$user} ne '') {
4908: my $type = (split(/:/,$rosterhash{$user}))[5];
4909: return ([],{}) if ($type eq 'auto');
4910: }
4911: }
4912: if (($cdom ne '') && ($cnum ne '')) {
4913: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4914: my $then=$env{'user.login.time'};
4915: my $update=$env{'user.update.time'};
4916: if (!$update) {
4917: $update = $then;
4918: }
4919: my @liveroles;
4920: foreach my $role ('dh','da') {
4921: if ($env{"user.role.$role./$cdom/"}) {
4922: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4923: my $limit = $update;
4924: if ($env{'request.role'} eq "$role./$cdom/") {
4925: $limit = $then;
4926: }
4927: my $activerole = 1;
4928: if ($tstart && $tstart>$limit) { $activerole = 0; }
4929: if ($tend && $tend <$limit) { $activerole = 0; }
4930: if ($activerole) {
4931: push(@liveroles,$role);
4932: }
4933: }
4934: }
4935: if (@liveroles) {
4936: if (&homeserver($cnum,$cdom) ne 'no_host') {
4937: my ($accessref,$accessinfo,%access_in_dom);
4938: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4939: if (ref($roles_by_num) eq 'ARRAY') {
4940: if (@{$roles_by_num}) {
4941: my %settings;
4942: if ($env{'request.course.id'} eq $cid) {
4943: foreach my $envkey (keys(%env)) {
4944: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4945: $settings{$1} = $env{$envkey};
4946: }
4947: }
4948: } else {
4949: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4950: }
4951: my %setincrs;
4952: if ($settings{'internal.adhocaccess'}) {
4953: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4954: }
4955: my @statuses;
4956: if ($env{'environment.inststatus'}) {
4957: @statuses = split(/,/,$env{'environment.inststatus'});
4958: }
4959: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4960: if (ref($accessref) eq 'HASH') {
4961: %access_in_dom = %{$accessref};
4962: }
4963: foreach my $role (@{$roles_by_num}) {
4964: my ($curraccess,@okstatus,@personnel);
4965: if ($setincrs{$role}) {
4966: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4967: if ($curraccess eq 'status') {
4968: @okstatus = split(/\&/,$rest);
4969: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4970: @personnel = split(/\&/,$rest);
4971: }
4972: } else {
4973: $curraccess = $access_in_dom{$role};
4974: if (ref($accessinfo) eq 'HASH') {
4975: if ($curraccess eq 'status') {
4976: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4977: @okstatus = @{$accessinfo->{$role}};
4978: }
4979: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4980: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4981: @personnel = @{$accessinfo->{$role}};
4982: }
4983: }
4984: }
4985: }
4986: if ($curraccess eq 'none') {
4987: next;
4988: } elsif ($curraccess eq 'all') {
4989: push(@possroles,$role);
4990: } elsif ($curraccess eq 'dh') {
4991: if (grep(/^dh$/,@liveroles)) {
4992: push(@possroles,$role);
4993: } else {
4994: next;
4995: }
4996: } elsif ($curraccess eq 'da') {
4997: if (grep(/^da$/,@liveroles)) {
4998: push(@possroles,$role);
4999: } else {
5000: next;
5001: }
5002: } elsif ($curraccess eq 'status') {
5003: if (@okstatus) {
5004: if (!@statuses) {
5005: if (grep(/^default$/,@okstatus)) {
5006: push(@possroles,$role);
5007: }
5008: } else {
5009: foreach my $status (@okstatus) {
5010: if (grep(/^\Q$status\E$/,@statuses)) {
5011: push(@possroles,$role);
5012: last;
5013: }
5014: }
5015: }
5016: }
5017: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5018: if (grep(/^\Q$user\E$/,@personnel)) {
5019: if ($curraccess eq 'exc') {
5020: push(@possroles,$role);
5021: }
5022: } elsif ($curraccess eq 'inc') {
5023: push(@possroles,$role);
5024: }
5025: }
5026: }
5027: }
5028: }
5029: }
5030: }
5031: }
5032: }
5033: unless (ref($description) eq 'HASH') {
5034: if (ref($roles_by_num) eq 'ARRAY') {
5035: my %desc;
5036: map { $desc{$_} = $_; } (@{$roles_by_num});
5037: $description = \%desc;
5038: } else {
5039: $description = {};
5040: }
5041: }
5042: return (\@possroles,$description);
5043: }
5044:
5045: # ----------------------------------------------------- Frontpage Announcements
5046: #
5047: #
5048:
5049: sub postannounce {
5050: my ($server,$text)=@_;
5051: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5052: unless ($text=~/\w/) { $text=''; }
5053: return &reply('setannounce:'.&escape($text),$server);
5054: }
5055:
5056: sub getannounce {
5057:
5058: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5059: my $announcement='';
5060: while (my $line = <$fh>) { $announcement .= $line; }
5061: close($fh);
5062: if ($announcement=~/\w/) {
5063: return
5064: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5065: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5066: } else {
5067: return '';
5068: }
5069: } else {
5070: return '';
5071: }
5072: }
5073:
5074: # ---------------------------------------------------------- Course ID routines
5075: # Deal with domain's nohist_courseid.db files
5076: #
5077:
5078: sub courseidput {
5079: my ($domain,$storehash,$coursehome,$caller) = @_;
5080: return unless (ref($storehash) eq 'HASH');
5081: my $outcome;
5082: if ($caller eq 'timeonly') {
5083: my $cids = '';
5084: foreach my $item (keys(%$storehash)) {
5085: $cids.=&escape($item).'&';
5086: }
5087: $cids=~s/\&$//;
5088: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5089: $coursehome);
5090: } else {
5091: my $items = '';
5092: foreach my $item (keys(%$storehash)) {
5093: $items.= &escape($item).'='.
5094: &freeze_escape($$storehash{$item}).'&';
5095: }
5096: $items=~s/\&$//;
5097: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5098: $coursehome);
5099: }
5100: if ($outcome eq 'unknown_cmd') {
5101: my $what;
5102: foreach my $cid (keys(%$storehash)) {
5103: $what .= &escape($cid).'=';
5104: foreach my $item ('description','inst_code','owner','type') {
5105: $what .= &escape($storehash->{$cid}{$item}).':';
5106: }
5107: $what =~ s/\:$/&/;
5108: }
5109: $what =~ s/\&$//;
5110: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5111: } else {
5112: return $outcome;
5113: }
5114: }
5115:
5116: sub courseiddump {
5117: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5118: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5119: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5120: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5121: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5122: my $as_hash = 1;
5123: my %returnhash;
5124: if (!$domfilter) { $domfilter=''; }
5125: my %libserv = &all_library();
5126: foreach my $tryserver (keys(%libserv)) {
5127: if ( ( $hostidflag == 1
5128: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5129: || (!defined($hostidflag)) ) {
5130:
5131: if (($domfilter eq '') ||
5132: (&host_domain($tryserver) eq $domfilter)) {
5133: my $rep;
5134: if (grep { $_ eq $tryserver } current_machine_ids()) {
5135: $rep = LONCAPA::Lond::dump_course_id_handler(
5136: join(":", (&host_domain($tryserver), $sincefilter,
5137: &escape($descfilter), &escape($instcodefilter),
5138: &escape($ownerfilter), &escape($coursefilter),
5139: &escape($typefilter), &escape($regexp_ok),
5140: $as_hash, &escape($selfenrollonly),
5141: &escape($catfilter), $showhidden, $caller,
5142: &escape($cloner), &escape($cc_clone), $cloneonly,
5143: &escape($createdbefore), &escape($createdafter),
5144: &escape($creationcontext),$domcloner,$hasuniquecode,
5145: $reqcrsdom,&escape($reqinstcode))));
5146: } else {
5147: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5148: $sincefilter.':'.&escape($descfilter).':'.
5149: &escape($instcodefilter).':'.&escape($ownerfilter).
5150: ':'.&escape($coursefilter).':'.&escape($typefilter).
5151: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5152: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5153: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5154: &escape($cc_clone).':'.$cloneonly.':'.
5155: &escape($createdbefore).':'.&escape($createdafter).':'.
5156: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5157: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5158: }
5159:
5160: my @pairs=split(/\&/,$rep);
5161: foreach my $item (@pairs) {
5162: my ($key,$value)=split(/\=/,$item,2);
5163: $key = &unescape($key);
5164: next if ($key =~ /^error: 2 /);
5165: my $result = &thaw_unescape($value);
5166: if (ref($result) eq 'HASH') {
5167: $returnhash{$key}=$result;
5168: } else {
5169: my @responses = split(/:/,$value);
5170: my @items = ('description','inst_code','owner','type');
5171: for (my $i=0; $i<@responses; $i++) {
5172: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5173: }
5174: }
5175: }
5176: }
5177: }
5178: }
5179: return %returnhash;
5180: }
5181:
5182: sub courselastaccess {
5183: my ($cdom,$cnum,$hostidref) = @_;
5184: my %returnhash;
5185: if ($cdom && $cnum) {
5186: my $chome = &homeserver($cnum,$cdom);
5187: if ($chome ne 'no_host') {
5188: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5189: &extract_lastaccess(\%returnhash,$rep);
5190: }
5191: } else {
5192: if (!$cdom) { $cdom=''; }
5193: my %libserv = &all_library();
5194: foreach my $tryserver (keys(%libserv)) {
5195: if (ref($hostidref) eq 'ARRAY') {
5196: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5197: }
5198: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5199: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5200: &extract_lastaccess(\%returnhash,$rep);
5201: }
5202: }
5203: }
5204: return %returnhash;
5205: }
5206:
5207: sub extract_lastaccess {
5208: my ($returnhash,$rep) = @_;
5209: if (ref($returnhash) eq 'HASH') {
5210: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5211: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5212: $rep eq '') {
5213: my @pairs=split(/\&/,$rep);
5214: foreach my $item (@pairs) {
5215: my ($key,$value)=split(/\=/,$item,2);
5216: $key = &unescape($key);
5217: next if ($key =~ /^error: 2 /);
5218: $returnhash->{$key} = &thaw_unescape($value);
5219: }
5220: }
5221: }
5222: return;
5223: }
5224:
5225: # ---------------------------------------------------------- DC e-mail
5226:
5227: sub dcmailput {
5228: my ($domain,$msgid,$message,$server)=@_;
5229: my $status = &Apache::lonnet::critical(
5230: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5231: &escape($message),$server);
5232: return $status;
5233: }
5234:
5235: sub dcmaildump {
5236: my ($dom,$startdate,$enddate,$senders) = @_;
5237: my %returnhash=();
5238:
5239: if (defined(&domain($dom,'primary'))) {
5240: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5241: &escape($enddate).':';
5242: my @esc_senders=map { &escape($_)} @$senders;
5243: $cmd.=&escape(join('&',@esc_senders));
5244: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5245: my ($key,$value) = split(/\=/,$line,2);
5246: if (($key) && ($value)) {
5247: $returnhash{&unescape($key)} = &unescape($value);
5248: }
5249: }
5250: }
5251: return %returnhash;
5252: }
5253: # ---------------------------------------------------------- Domain roles
5254:
5255: sub get_domain_roles {
5256: my ($dom,$roles,$startdate,$enddate)=@_;
5257: if ((!defined($startdate)) || ($startdate eq '')) {
5258: $startdate = '.';
5259: }
5260: if ((!defined($enddate)) || ($enddate eq '')) {
5261: $enddate = '.';
5262: }
5263: my $rolelist;
5264: if (ref($roles) eq 'ARRAY') {
5265: $rolelist = join('&',@{$roles});
5266: }
5267: my %personnel = ();
5268:
5269: my %servers = &get_servers($dom,'library');
5270: foreach my $tryserver (keys(%servers)) {
5271: %{$personnel{$tryserver}}=();
5272: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5273: &escape($startdate).':'.
5274: &escape($enddate).':'.
5275: &escape($rolelist), $tryserver))) {
5276: my ($key,$value) = split(/\=/,$line,2);
5277: if (($key) && ($value)) {
5278: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5279: }
5280: }
5281: }
5282: return %personnel;
5283: }
5284:
5285: sub get_active_domroles {
5286: my ($dom,$roles) = @_;
5287: return () unless (ref($roles) eq 'ARRAY');
5288: my $now = time;
5289: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5290: my %domroles;
5291: foreach my $server (keys(%dompersonnel)) {
5292: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5293: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5294: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5295: }
5296: }
5297: return %domroles;
5298: }
5299:
5300: # ----------------------------------------------------------- Interval timing
5301:
5302: {
5303: # Caches needed for speedup of navmaps
5304: # We don't want to cache this for very long at all (5 seconds at most)
5305: #
5306: # The user for whom we cache
5307: my $cachedkey='';
5308: # The cached times for this user
5309: my %cachedtimes=();
5310: # When this was last done
5311: my $cachedtime='';
5312:
5313: sub load_all_first_access {
5314: my ($uname,$udom,$ignorecache)=@_;
5315: if (($cachedkey eq $uname.':'.$udom) &&
5316: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5317: (!$ignorecache)) {
5318: return;
5319: }
5320: $cachedtime=time;
5321: $cachedkey=$uname.':'.$udom;
5322: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5323: }
5324:
5325: sub get_first_access {
5326: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5327: my ($symb,$courseid,$udom,$uname)=&whichuser();
5328: if ($argsymb) { $symb=$argsymb; }
5329: my ($map,$id,$res)=&decode_symb($symb);
5330: if ($argmap) { $map = $argmap; }
5331: if ($type eq 'course') {
5332: $res='course';
5333: } elsif ($type eq 'map') {
5334: $res=&symbread($map);
5335: } else {
5336: $res=$symb;
5337: }
5338: &load_all_first_access($uname,$udom,$ignorecache);
5339: return $cachedtimes{"$courseid\0$res"};
5340: }
5341:
5342: sub set_first_access {
5343: my ($type,$interval)=@_;
5344: my ($symb,$courseid,$udom,$uname)=&whichuser();
5345: my ($map,$id,$res)=&decode_symb($symb);
5346: if ($type eq 'course') {
5347: $res='course';
5348: } elsif ($type eq 'map') {
5349: $res=&symbread($map);
5350: } else {
5351: $res=$symb;
5352: }
5353: $cachedkey='';
5354: my $firstaccess=&get_first_access($type,$symb,$map);
5355: if ($firstaccess) {
5356: &logthis("First access time already set ($firstaccess) when attempting ".
5357: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5358: "in $courseid");
5359: return 'already_set';
5360: } else {
5361: my $start = time;
5362: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5363: $udom,$uname);
5364: if ($putres eq 'ok') {
5365: &put('timerinterval',{"$courseid\0$res"=>$interval},
5366: $udom,$uname);
5367: &appenv(
5368: {
5369: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5370: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5371: }
5372: );
5373: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5374: $cachedtimes{"$courseid\0$res"} = $start;
5375: }
5376: } elsif ($putres ne 'refused') {
5377: &logthis("Result: $putres when attempting to set first access time ".
5378: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5379: }
5380: return $putres;
5381: }
5382: return 'already_set';
5383: }
5384: }
5385:
5386: # --------------------------------------------- Set Expire Date for Spreadsheet
5387:
5388: sub expirespread {
5389: my ($uname,$udom,$stype,$usymb)=@_;
5390: my $cid=$env{'request.course.id'};
5391: if ($cid) {
5392: my $now=time;
5393: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5394: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5395: $env{'course.'.$cid.'.num'}.
5396: ':nohist_expirationdates:'.
5397: &escape($key).'='.$now,
5398: $env{'course.'.$cid.'.home'})
5399: }
5400: return 'ok';
5401: }
5402:
5403: # ----------------------------------------------------- Devalidate Spreadsheets
5404:
5405: sub devalidate {
5406: my ($symb,$uname,$udom)=@_;
5407: my $cid=$env{'request.course.id'};
5408: if ($cid) {
5409: # delete the stored spreadsheets for
5410: # - the student level sheet of this user in course's homespace
5411: # - the assessment level sheet for this resource
5412: # for this user in user's homespace
5413: # - current conditional state info
5414: my $key=$uname.':'.$udom.':';
5415: my $status=
5416: &del('nohist_calculatedsheets',
5417: [$key.'studentcalc:'],
5418: $env{'course.'.$cid.'.domain'},
5419: $env{'course.'.$cid.'.num'})
5420: .' '.
5421: &del('nohist_calculatedsheets_'.$cid,
5422: [$key.'assesscalc:'.$symb],$udom,$uname);
5423: unless ($status eq 'ok ok') {
5424: &logthis('Could not devalidate spreadsheet '.
5425: $uname.' at '.$udom.' for '.
5426: $symb.': '.$status);
5427: }
5428: &delenv('user.state.'.$cid);
5429: }
5430: }
5431:
5432: sub get_scalar {
5433: my ($string,$end) = @_;
5434: my $value;
5435: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5436: $value = $1;
5437: } elsif ($$string =~ s/^([^&]*?)&//) {
5438: $value = $1;
5439: }
5440: return &unescape($value);
5441: }
5442:
5443: sub array2str {
5444: my (@array) = @_;
5445: my $result=&arrayref2str(\@array);
5446: $result=~s/^__ARRAY_REF__//;
5447: $result=~s/__END_ARRAY_REF__$//;
5448: return $result;
5449: }
5450:
5451: sub arrayref2str {
5452: my ($arrayref) = @_;
5453: my $result='__ARRAY_REF__';
5454: foreach my $elem (@$arrayref) {
5455: if(ref($elem) eq 'ARRAY') {
5456: $result.=&arrayref2str($elem).'&';
5457: } elsif(ref($elem) eq 'HASH') {
5458: $result.=&hashref2str($elem).'&';
5459: } elsif(ref($elem)) {
5460: #print("Got a ref of ".(ref($elem))." skipping.");
5461: } else {
5462: $result.=&escape($elem).'&';
5463: }
5464: }
5465: $result=~s/\&$//;
5466: $result .= '__END_ARRAY_REF__';
5467: return $result;
5468: }
5469:
5470: sub hash2str {
5471: my (%hash) = @_;
5472: my $result=&hashref2str(\%hash);
5473: $result=~s/^__HASH_REF__//;
5474: $result=~s/__END_HASH_REF__$//;
5475: return $result;
5476: }
5477:
5478: sub hashref2str {
5479: my ($hashref)=@_;
5480: my $result='__HASH_REF__';
5481: foreach my $key (sort(keys(%$hashref))) {
5482: if (ref($key) eq 'ARRAY') {
5483: $result.=&arrayref2str($key).'=';
5484: } elsif (ref($key) eq 'HASH') {
5485: $result.=&hashref2str($key).'=';
5486: } elsif (ref($key)) {
5487: $result.='=';
5488: #print("Got a ref of ".(ref($key))." skipping.");
5489: } else {
5490: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5491: }
5492:
5493: if(ref($hashref->{$key}) eq 'ARRAY') {
5494: $result.=&arrayref2str($hashref->{$key}).'&';
5495: } elsif(ref($hashref->{$key}) eq 'HASH') {
5496: $result.=&hashref2str($hashref->{$key}).'&';
5497: } elsif(ref($hashref->{$key})) {
5498: $result.='&';
5499: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5500: } else {
5501: $result.=&escape($hashref->{$key}).'&';
5502: }
5503: }
5504: $result=~s/\&$//;
5505: $result .= '__END_HASH_REF__';
5506: return $result;
5507: }
5508:
5509: sub str2hash {
5510: my ($string)=@_;
5511: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5512: return %$hash;
5513: }
5514:
5515: sub str2hashref {
5516: my ($string) = @_;
5517:
5518: my %hash;
5519:
5520: if($string !~ /^__HASH_REF__/) {
5521: if (! ($string eq '' || !defined($string))) {
5522: $hash{'error'}='Not hash reference';
5523: }
5524: return (\%hash, $string);
5525: }
5526:
5527: $string =~ s/^__HASH_REF__//;
5528:
5529: while($string !~ /^__END_HASH_REF__/) {
5530: #key
5531: my $key='';
5532: if($string =~ /^__HASH_REF__/) {
5533: ($key, $string)=&str2hashref($string);
5534: if(defined($key->{'error'})) {
5535: $hash{'error'}='Bad data';
5536: return (\%hash, $string);
5537: }
5538: } elsif($string =~ /^__ARRAY_REF__/) {
5539: ($key, $string)=&str2arrayref($string);
5540: if($key->[0] eq 'Array reference error') {
5541: $hash{'error'}='Bad data';
5542: return (\%hash, $string);
5543: }
5544: } else {
5545: $string =~ s/^(.*?)=//;
5546: $key=&unescape($1);
5547: }
5548: $string =~ s/^=//;
5549:
5550: #value
5551: my $value='';
5552: if($string =~ /^__HASH_REF__/) {
5553: ($value, $string)=&str2hashref($string);
5554: if(defined($value->{'error'})) {
5555: $hash{'error'}='Bad data';
5556: return (\%hash, $string);
5557: }
5558: } elsif($string =~ /^__ARRAY_REF__/) {
5559: ($value, $string)=&str2arrayref($string);
5560: if($value->[0] eq 'Array reference error') {
5561: $hash{'error'}='Bad data';
5562: return (\%hash, $string);
5563: }
5564: } else {
5565: $value=&get_scalar(\$string,'__END_HASH_REF__');
5566: }
5567: $string =~ s/^&//;
5568:
5569: $hash{$key}=$value;
5570: }
5571:
5572: $string =~ s/^__END_HASH_REF__//;
5573:
5574: return (\%hash, $string);
5575: }
5576:
5577: sub str2array {
5578: my ($string)=@_;
5579: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5580: return @$array;
5581: }
5582:
5583: sub str2arrayref {
5584: my ($string) = @_;
5585: my @array;
5586:
5587: if($string !~ /^__ARRAY_REF__/) {
5588: if (! ($string eq '' || !defined($string))) {
5589: $array[0]='Array reference error';
5590: }
5591: return (\@array, $string);
5592: }
5593:
5594: $string =~ s/^__ARRAY_REF__//;
5595:
5596: while($string !~ /^__END_ARRAY_REF__/) {
5597: my $value='';
5598: if($string =~ /^__HASH_REF__/) {
5599: ($value, $string)=&str2hashref($string);
5600: if(defined($value->{'error'})) {
5601: $array[0] ='Array reference error';
5602: return (\@array, $string);
5603: }
5604: } elsif($string =~ /^__ARRAY_REF__/) {
5605: ($value, $string)=&str2arrayref($string);
5606: if($value->[0] eq 'Array reference error') {
5607: $array[0] ='Array reference error';
5608: return (\@array, $string);
5609: }
5610: } else {
5611: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5612: }
5613: $string =~ s/^&//;
5614:
5615: push(@array, $value);
5616: }
5617:
5618: $string =~ s/^__END_ARRAY_REF__//;
5619:
5620: return (\@array, $string);
5621: }
5622:
5623: # -------------------------------------------------------------------Temp Store
5624:
5625: sub tmpreset {
5626: my ($symb,$namespace,$domain,$stuname) = @_;
5627: if (!$symb) {
5628: $symb=&symbread();
5629: if (!$symb) { $symb= $env{'request.url'}; }
5630: }
5631: $symb=escape($symb);
5632:
5633: if (!$namespace) { $namespace=$env{'request.state'}; }
5634: $namespace=~s/\//\_/g;
5635: $namespace=~s/\W//g;
5636:
5637: if (!$domain) { $domain=$env{'user.domain'}; }
5638: if (!$stuname) { $stuname=$env{'user.name'}; }
5639: if ($domain eq 'public' && $stuname eq 'public') {
5640: $stuname=$ENV{'REMOTE_ADDR'};
5641: }
5642: my $path=LONCAPA::tempdir();
5643: my %hash;
5644: if (tie(%hash,'GDBM_File',
5645: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5646: &GDBM_WRCREAT(),0640)) {
5647: foreach my $key (keys(%hash)) {
5648: if ($key=~ /:$symb/) {
5649: delete($hash{$key});
5650: }
5651: }
5652: }
5653: }
5654:
5655: sub tmpstore {
5656: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5657:
5658: if (!$symb) {
5659: $symb=&symbread();
5660: if (!$symb) { $symb= $env{'request.url'}; }
5661: }
5662: $symb=escape($symb);
5663:
5664: if (!$namespace) {
5665: # I don't think we would ever want to store this for a course.
5666: # it seems this will only be used if we don't have a course.
5667: #$namespace=$env{'request.course.id'};
5668: #if (!$namespace) {
5669: $namespace=$env{'request.state'};
5670: #}
5671: }
5672: $namespace=~s/\//\_/g;
5673: $namespace=~s/\W//g;
5674: if (!$domain) { $domain=$env{'user.domain'}; }
5675: if (!$stuname) { $stuname=$env{'user.name'}; }
5676: if ($domain eq 'public' && $stuname eq 'public') {
5677: $stuname=$ENV{'REMOTE_ADDR'};
5678: }
5679: my $now=time;
5680: my %hash;
5681: my $path=LONCAPA::tempdir();
5682: if (tie(%hash,'GDBM_File',
5683: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5684: &GDBM_WRCREAT(),0640)) {
5685: $hash{"version:$symb"}++;
5686: my $version=$hash{"version:$symb"};
5687: my $allkeys='';
5688: foreach my $key (keys(%$storehash)) {
5689: $allkeys.=$key.':';
5690: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5691: }
5692: $hash{"$version:$symb:timestamp"}=$now;
5693: $allkeys.='timestamp';
5694: $hash{"$version:keys:$symb"}=$allkeys;
5695: if (untie(%hash)) {
5696: return 'ok';
5697: } else {
5698: return "error:$!";
5699: }
5700: } else {
5701: return "error:$!";
5702: }
5703: }
5704:
5705: # -----------------------------------------------------------------Temp Restore
5706:
5707: sub tmprestore {
5708: my ($symb,$namespace,$domain,$stuname) = @_;
5709:
5710: if (!$symb) {
5711: $symb=&symbread();
5712: if (!$symb) { $symb= $env{'request.url'}; }
5713: }
5714: $symb=escape($symb);
5715:
5716: if (!$namespace) { $namespace=$env{'request.state'}; }
5717:
5718: if (!$domain) { $domain=$env{'user.domain'}; }
5719: if (!$stuname) { $stuname=$env{'user.name'}; }
5720: if ($domain eq 'public' && $stuname eq 'public') {
5721: $stuname=$ENV{'REMOTE_ADDR'};
5722: }
5723: my %returnhash;
5724: $namespace=~s/\//\_/g;
5725: $namespace=~s/\W//g;
5726: my %hash;
5727: my $path=LONCAPA::tempdir();
5728: if (tie(%hash,'GDBM_File',
5729: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5730: &GDBM_READER(),0640)) {
5731: my $version=$hash{"version:$symb"};
5732: $returnhash{'version'}=$version;
5733: my $scope;
5734: for ($scope=1;$scope<=$version;$scope++) {
5735: my $vkeys=$hash{"$scope:keys:$symb"};
5736: my @keys=split(/:/,$vkeys);
5737: my $key;
5738: $returnhash{"$scope:keys"}=$vkeys;
5739: foreach $key (@keys) {
5740: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5741: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5742: }
5743: }
5744: if (!(untie(%hash))) {
5745: return "error:$!";
5746: }
5747: } else {
5748: return "error:$!";
5749: }
5750: return %returnhash;
5751: }
5752:
5753: # ----------------------------------------------------------------------- Store
5754:
5755: sub store {
5756: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5757: my $home='';
5758:
5759: if ($stuname) { $home=&homeserver($stuname,$domain); }
5760:
5761: $symb=&symbclean($symb);
5762: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5763:
5764: if (!$domain) { $domain=$env{'user.domain'}; }
5765: if (!$stuname) { $stuname=$env{'user.name'}; }
5766:
5767: &devalidate($symb,$stuname,$domain);
5768:
5769: $symb=escape($symb);
5770: if (!$namespace) {
5771: unless ($namespace=$env{'request.course.id'}) {
5772: return '';
5773: }
5774: }
5775: if (!$home) { $home=$env{'user.home'}; }
5776:
5777: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5778: $$storehash{'host'}=$perlvar{'lonHostID'};
5779:
5780: my $namevalue='';
5781: foreach my $key (keys(%$storehash)) {
5782: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5783: }
5784: $namevalue=~s/\&$//;
5785: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5786: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5787: }
5788:
5789: # -------------------------------------------------------------- Critical Store
5790:
5791: sub cstore {
5792: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5793: my $home='';
5794:
5795: if ($stuname) { $home=&homeserver($stuname,$domain); }
5796:
5797: $symb=&symbclean($symb);
5798: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5799:
5800: if (!$domain) { $domain=$env{'user.domain'}; }
5801: if (!$stuname) { $stuname=$env{'user.name'}; }
5802:
5803: &devalidate($symb,$stuname,$domain);
5804:
5805: $symb=escape($symb);
5806: if (!$namespace) {
5807: unless ($namespace=$env{'request.course.id'}) {
5808: return '';
5809: }
5810: }
5811: if (!$home) { $home=$env{'user.home'}; }
5812:
5813: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5814: $$storehash{'host'}=$perlvar{'lonHostID'};
5815:
5816: my $namevalue='';
5817: foreach my $key (keys(%$storehash)) {
5818: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5819: }
5820: $namevalue=~s/\&$//;
5821: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5822: return critical
5823: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5824: }
5825:
5826: # --------------------------------------------------------------------- Restore
5827:
5828: sub restore {
5829: my ($symb,$namespace,$domain,$stuname) = @_;
5830: my $home='';
5831:
5832: if ($stuname) { $home=&homeserver($stuname,$domain); }
5833:
5834: if (!$symb) {
5835: return if ($namespace eq 'courserequests');
5836: unless ($symb=escape(&symbread())) { return ''; }
5837: } else {
5838: unless ($namespace eq 'courserequests') {
5839: $symb=&escape(&symbclean($symb));
5840: }
5841: }
5842: if (!$namespace) {
5843: unless ($namespace=$env{'request.course.id'}) {
5844: return '';
5845: }
5846: }
5847: if (!$domain) { $domain=$env{'user.domain'}; }
5848: if (!$stuname) { $stuname=$env{'user.name'}; }
5849: if (!$home) { $home=$env{'user.home'}; }
5850: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5851:
5852: my %returnhash=();
5853: foreach my $line (split(/\&/,$answer)) {
5854: my ($name,$value)=split(/\=/,$line);
5855: $returnhash{&unescape($name)}=&thaw_unescape($value);
5856: }
5857: my $version;
5858: for ($version=1;$version<=$returnhash{'version'};$version++) {
5859: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5860: $returnhash{$item}=$returnhash{$version.':'.$item};
5861: }
5862: }
5863: return %returnhash;
5864: }
5865:
5866: # ---------------------------------------------------------- Course Description
5867: #
5868: #
5869:
5870: sub coursedescription {
5871: my ($courseid,$args)=@_;
5872: $courseid=~s/^\///;
5873: $courseid=~s/\_/\//g;
5874: my ($cdomain,$cnum)=split(/\//,$courseid);
5875: my $chome=&homeserver($cnum,$cdomain);
5876: my $normalid=$cdomain.'_'.$cnum;
5877: # need to always cache even if we get errors otherwise we keep
5878: # trying and trying and trying to get the course description.
5879: my %envhash=();
5880: my %returnhash=();
5881:
5882: my $expiretime=600;
5883: if ($env{'request.course.id'} eq $normalid) {
5884: $expiretime=120;
5885: }
5886:
5887: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5888: if (!$args->{'freshen_cache'}
5889: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5890: foreach my $key (keys(%env)) {
5891: next if ($key !~ /^\Q$prefix\E(.*)/);
5892: my ($setting) = $1;
5893: $returnhash{$setting} = $env{$key};
5894: }
5895: return %returnhash;
5896: }
5897:
5898: # get the data again
5899:
5900: if (!$args->{'one_time'}) {
5901: $envhash{'course.'.$normalid.'.last_cache'}=time;
5902: }
5903:
5904: if ($chome ne 'no_host') {
5905: %returnhash=&dump('environment',$cdomain,$cnum);
5906: if (!exists($returnhash{'con_lost'})) {
5907: my $username = $env{'user.name'}; # Defult username
5908: if(defined $args->{'user'}) {
5909: $username = $args->{'user'};
5910: }
5911: $returnhash{'home'}= $chome;
5912: $returnhash{'domain'} = $cdomain;
5913: $returnhash{'num'} = $cnum;
5914: if (!defined($returnhash{'type'})) {
5915: $returnhash{'type'} = 'Course';
5916: }
5917: while (my ($name,$value) = each %returnhash) {
5918: $envhash{'course.'.$normalid.'.'.$name}=$value;
5919: }
5920: $returnhash{'url'}=&clutter($returnhash{'url'});
5921: $returnhash{'fn'}=LONCAPA::tempdir() .
5922: $username.'_'.$cdomain.'_'.$cnum;
5923: $envhash{'course.'.$normalid.'.home'}=$chome;
5924: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5925: $envhash{'course.'.$normalid.'.num'}=$cnum;
5926: }
5927: }
5928: if (!$args->{'one_time'}) {
5929: &appenv(\%envhash);
5930: }
5931: return %returnhash;
5932: }
5933:
5934: sub update_released_required {
5935: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5936: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5937: $cid = $env{'request.course.id'};
5938: $cdom = $env{'course.'.$cid.'.domain'};
5939: $cnum = $env{'course.'.$cid.'.num'};
5940: $chome = $env{'course.'.$cid.'.home'};
5941: }
5942: if ($needsrelease) {
5943: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5944: my $needsupdate;
5945: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5946: $needsupdate = 1;
5947: } else {
5948: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5949: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5950: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5951: $needsupdate = 1;
5952: }
5953: }
5954: if ($needsupdate) {
5955: my %needshash = (
5956: 'internal.releaserequired' => $needsrelease,
5957: );
5958: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5959: if ($putresult eq 'ok') {
5960: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5961: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5962: if (ref($crsinfo{$cid}) eq 'HASH') {
5963: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5964: &courseidput($cdom,\%crsinfo,$chome,'notime');
5965: }
5966: }
5967: }
5968: }
5969: return;
5970: }
5971:
5972: # -------------------------------------------------See if a user is privileged
5973:
5974: sub privileged {
5975: my ($username,$domain,$possdomains,$possroles)=@_;
5976: my $now = time;
5977: my $roles;
5978: if (ref($possroles) eq 'ARRAY') {
5979: $roles = $possroles;
5980: } else {
5981: $roles = ['dc','su'];
5982: }
5983: if (ref($possdomains) eq 'ARRAY') {
5984: my %privileged = &privileged_by_domain($possdomains,$roles);
5985: foreach my $dom (@{$possdomains}) {
5986: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5987: (ref($privileged{$dom}) eq 'HASH')) {
5988: foreach my $role (@{$roles}) {
5989: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5990: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5991: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5992: return 1 unless (($end && $end < $now) ||
5993: ($start && $start > $now));
5994: }
5995: }
5996: }
5997: }
5998: }
5999: } else {
6000: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6001: my $now = time;
6002:
6003: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6004: my ($trole, $tend, $tstart) = split(/_/, $role);
6005: if (grep(/^\Q$trole\E$/,@{$roles})) {
6006: return 1 unless ($tend && $tend < $now)
6007: or ($tstart && $tstart > $now);
6008: }
6009: }
6010: }
6011: return 0;
6012: }
6013:
6014: sub privileged_by_domain {
6015: my ($domains,$roles) = @_;
6016: my %privileged = ();
6017: my $cachetime = 60*60*24;
6018: my $now = time;
6019: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6020: return %privileged;
6021: }
6022: foreach my $dom (@{$domains}) {
6023: next if (ref($privileged{$dom}) eq 'HASH');
6024: my $needroles;
6025: foreach my $role (@{$roles}) {
6026: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6027: if (defined($cached)) {
6028: if (ref($result) eq 'HASH') {
6029: $privileged{$dom}{$role} = $result;
6030: }
6031: } else {
6032: $needroles = 1;
6033: }
6034: }
6035: if ($needroles) {
6036: my %dompersonnel = &get_domain_roles($dom,$roles);
6037: $privileged{$dom} = {};
6038: foreach my $server (keys(%dompersonnel)) {
6039: if (ref($dompersonnel{$server}) eq 'HASH') {
6040: foreach my $item (keys(%{$dompersonnel{$server}})) {
6041: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6042: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6043: next if ($end && $end < $now);
6044: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6045: $dompersonnel{$server}{$item};
6046: }
6047: }
6048: }
6049: if (ref($privileged{$dom}) eq 'HASH') {
6050: foreach my $role (@{$roles}) {
6051: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6052: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6053: } else {
6054: my %hash = ();
6055: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6056: }
6057: }
6058: }
6059: }
6060: }
6061: return %privileged;
6062: }
6063:
6064: # -------------------------------------------------------- Get user privileges
6065:
6066: sub rolesinit {
6067: my ($domain, $username) = @_;
6068: my %userroles = ('user.login.time' => time);
6069: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6070:
6071: # firstaccess and timerinterval are related to timed maps/resources.
6072: # also, blocking can be triggered by an activating timer
6073: # it's saved in the user's %env.
6074: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6075: my %timerinterval = &dump('timerinterval', $domain, $username);
6076: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6077: %timerintchk, %timerintenv);
6078:
6079: foreach my $key (keys(%firstaccess)) {
6080: my ($cid, $rest) = split(/\0/, $key);
6081: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6082: }
6083:
6084: foreach my $key (keys(%timerinterval)) {
6085: my ($cid,$rest) = split(/\0/,$key);
6086: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6087: }
6088:
6089: my %allroles=();
6090: my %allgroups=();
6091:
6092: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6093: my $role = $rolesdump{$area};
6094: $area =~ s/\_\w\w$//;
6095:
6096: my ($trole, $tend, $tstart, $group_privs);
6097:
6098: if ($role =~ /^cr/) {
6099: # Custom role, defined by a user
6100: # e.g., user.role.cr/msu/smith/mynewrole
6101: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6102: $trole = $1;
6103: ($tend, $tstart) = split('_', $2);
6104: } else {
6105: $trole = $role;
6106: }
6107: } elsif ($role =~ m|^gr/|) {
6108: # Role of member in a group, defined within a course/community
6109: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6110: ($trole, $tend, $tstart) = split(/_/, $role);
6111: next if $tstart eq '-1';
6112: ($trole, $group_privs) = split(/\//, $trole);
6113: $group_privs = &unescape($group_privs);
6114: } else {
6115: # Just a normal role, defined in roles.tab
6116: ($trole, $tend, $tstart) = split(/_/,$role);
6117: }
6118:
6119: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6120: $username);
6121: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6122:
6123: # role expired or not available yet?
6124: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6125: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6126:
6127: next if $area eq '' or $trole eq '';
6128:
6129: my $spec = "$trole.$area";
6130: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6131:
6132: if ($trole =~ /^cr\//) {
6133: # Custom role, defined by a user
6134: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6135: } elsif ($trole eq 'gr') {
6136: # Role of a member in a group, defined within a course/community
6137: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6138: next;
6139: } else {
6140: # Normal role, defined in roles.tab
6141: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6142: }
6143:
6144: my $cid = $tdomain.'_'.$trest;
6145: unless ($firstaccchk{$cid}) {
6146: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6147: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6148: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6149: $coursetimerstarts{$cid}{$item};
6150: }
6151: }
6152: $firstaccchk{$cid} = 1;
6153: }
6154: unless ($timerintchk{$cid}) {
6155: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6156: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6157: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6158: $coursetimerintervals{$cid}{$item};
6159: }
6160: }
6161: $timerintchk{$cid} = 1;
6162: }
6163: }
6164:
6165: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6166: \%allroles, \%allgroups);
6167: $env{'user.adv'} = $userroles{'user.adv'};
6168: $env{'user.rar'} = $userroles{'user.rar'};
6169:
6170: return (\%userroles,\%firstaccenv,\%timerintenv);
6171: }
6172:
6173: sub set_arearole {
6174: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6175: unless ($nolog) {
6176: # log the associated role with the area
6177: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6178: }
6179: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6180: }
6181:
6182: sub custom_roleprivs {
6183: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6184: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6185: my $homsvr = &homeserver($rauthor,$rdomain);
6186: if (&hostname($homsvr) ne '') {
6187: my ($rdummy,$roledef)=
6188: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6189: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6190: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6191: if (defined($syspriv)) {
6192: if ($trest =~ /^$match_community$/) {
6193: $syspriv =~ s/bre\&S//;
6194: }
6195: $$allroles{'cm./'}.=':'.$syspriv;
6196: $$allroles{$spec.'./'}.=':'.$syspriv;
6197: }
6198: if ($tdomain ne '') {
6199: if (defined($dompriv)) {
6200: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6201: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6202: }
6203: if (($trest ne '') && (defined($coursepriv))) {
6204: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6205: my $rolename = $1;
6206: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6207: }
6208: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6209: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6210: }
6211: }
6212: }
6213: }
6214: }
6215:
6216: sub course_adhocrole_privs {
6217: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6218: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6219: if ($overrides{"internal.adhocpriv.$rolename"}) {
6220: my (%currprivs,%storeprivs);
6221: foreach my $item (split(/:/,$coursepriv)) {
6222: my ($priv,$restrict) = split(/\&/,$item);
6223: $currprivs{$priv} = $restrict;
6224: }
6225: my (%possadd,%possremove,%full);
6226: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6227: my ($priv,$restrict)=split(/\&/,$item);
6228: $full{$priv} = $restrict;
6229: }
6230: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6231: next if ($item eq '');
6232: my ($rule,$rest) = split(/=/,$item);
6233: next unless (($rule eq 'off') || ($rule eq 'on'));
6234: foreach my $priv (split(/:/,$rest)) {
6235: if ($priv ne '') {
6236: if ($rule eq 'off') {
6237: $possremove{$priv} = 1;
6238: } else {
6239: $possadd{$priv} = 1;
6240: }
6241: }
6242: }
6243: }
6244: foreach my $priv (sort(keys(%full))) {
6245: if (exists($currprivs{$priv})) {
6246: unless (exists($possremove{$priv})) {
6247: $storeprivs{$priv} = $currprivs{$priv};
6248: }
6249: } elsif (exists($possadd{$priv})) {
6250: $storeprivs{$priv} = $full{$priv};
6251: }
6252: }
6253: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6254: }
6255: return $coursepriv;
6256: }
6257:
6258: sub group_roleprivs {
6259: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6260: my $access = 1;
6261: my $now = time;
6262: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6263: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6264: if ($access) {
6265: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6266: $$allgroups{$course}{$group} .=':'.$group_privs;
6267: }
6268: }
6269:
6270: sub standard_roleprivs {
6271: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6272: if (defined($pr{$trole.':s'})) {
6273: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6274: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6275: }
6276: if ($tdomain ne '') {
6277: if (defined($pr{$trole.':d'})) {
6278: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6279: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6280: }
6281: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6282: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6283: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6284: }
6285: }
6286: }
6287:
6288: sub set_userprivs {
6289: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6290: my $author=0;
6291: my $adv=0;
6292: my $rar=0;
6293: my %grouproles = ();
6294: if (keys(%{$allgroups}) > 0) {
6295: my @groupkeys;
6296: foreach my $role (keys(%{$allroles})) {
6297: push(@groupkeys,$role);
6298: }
6299: if (ref($groups_roles) eq 'HASH') {
6300: foreach my $key (keys(%{$groups_roles})) {
6301: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6302: push(@groupkeys,$key);
6303: }
6304: }
6305: }
6306: if (@groupkeys > 0) {
6307: foreach my $role (@groupkeys) {
6308: my ($trole,$area,$sec,$extendedarea);
6309: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6310: $trole = $1;
6311: $area = $2;
6312: $sec = $3;
6313: $extendedarea = $area.$sec;
6314: if (exists($$allgroups{$area})) {
6315: foreach my $group (keys(%{$$allgroups{$area}})) {
6316: my $spec = $trole.'.'.$extendedarea;
6317: $grouproles{$spec.'.'.$area.'/'.$group} =
6318: $$allgroups{$area}{$group};
6319: }
6320: }
6321: }
6322: }
6323: }
6324: }
6325: foreach my $group (keys(%grouproles)) {
6326: $$allroles{$group} = $grouproles{$group};
6327: }
6328: foreach my $role (keys(%{$allroles})) {
6329: my %thesepriv;
6330: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6331: foreach my $item (split(/:/,$$allroles{$role})) {
6332: if ($item ne '') {
6333: my ($privilege,$restrictions)=split(/&/,$item);
6334: if ($restrictions eq '') {
6335: $thesepriv{$privilege}='F';
6336: } elsif ($thesepriv{$privilege} ne 'F') {
6337: $thesepriv{$privilege}.=$restrictions;
6338: }
6339: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6340: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6341: }
6342: }
6343: my $thesestr='';
6344: foreach my $priv (sort(keys(%thesepriv))) {
6345: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6346: }
6347: $userroles->{'user.priv.'.$role} = $thesestr;
6348: }
6349: return ($author,$adv,$rar);
6350: }
6351:
6352: sub role_status {
6353: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6354: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6355: my ($one,$two) = split(m{\./},$rolekey,2);
6356: (undef,undef,$$role) = split(/\./,$one,3);
6357: unless (!defined($$role) || $$role eq '') {
6358: $$where = '/'.$two;
6359: $$trolecode=$$role.'.'.$$where;
6360: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6361: $$tstatus='is';
6362: if ($$tstart && $$tstart>$update) {
6363: $$tstatus='future';
6364: if ($$tstart<$now) {
6365: if ($$tstart && $$tstart>$refresh) {
6366: if (($$where ne '') && ($$role ne '')) {
6367: my (%allroles,%allgroups,$group_privs,
6368: %groups_roles,@rolecodes);
6369: my %userroles = (
6370: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6371: );
6372: @rolecodes = ('cm');
6373: my $spec=$$role.'.'.$$where;
6374: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6375: if ($$role =~ /^cr\//) {
6376: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6377: push(@rolecodes,'cr');
6378: } elsif ($$role eq 'gr') {
6379: push(@rolecodes,$$role);
6380: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6381: $env{'user.name'});
6382: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6383: (undef,my $group_privs) = split(/\//,$trole);
6384: $group_privs = &unescape($group_privs);
6385: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6386: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6387: &get_groups_roles($tdomain,$trest,
6388: \%course_roles,\@rolecodes,
6389: \%groups_roles);
6390: } else {
6391: push(@rolecodes,$$role);
6392: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6393: }
6394: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6395: \%groups_roles);
6396: &appenv(\%userroles,\@rolecodes);
6397: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6398: }
6399: }
6400: $$tstatus = 'is';
6401: }
6402: }
6403: if ($$tend) {
6404: if ($$tend<$update) {
6405: $$tstatus='expired';
6406: } elsif ($$tend<$now) {
6407: $$tstatus='will_not';
6408: }
6409: }
6410: }
6411: }
6412: }
6413:
6414: sub get_groups_roles {
6415: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6416: return unless((ref($cdom_courseroles) eq 'HASH') &&
6417: (ref($rolecodes) eq 'ARRAY') &&
6418: (ref($groups_roles) eq 'HASH'));
6419: if (keys(%{$cdom_courseroles}) > 0) {
6420: my ($cnum) = ($rest =~ /^($match_courseid)/);
6421: if ($cdom ne '' && $cnum ne '') {
6422: foreach my $key (keys(%{$cdom_courseroles})) {
6423: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6424: my $crsrole = $1;
6425: my $crssec = $2;
6426: if ($crsrole =~ /^cr/) {
6427: unless (grep(/^cr$/,@{$rolecodes})) {
6428: push(@{$rolecodes},'cr');
6429: }
6430: } else {
6431: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6432: push(@{$rolecodes},$crsrole);
6433: }
6434: }
6435: my $rolekey = "$crsrole./$cdom/$cnum";
6436: if ($crssec ne '') {
6437: $rolekey .= "/$crssec";
6438: }
6439: $rolekey .= './';
6440: $groups_roles->{$rolekey} = $rolecodes;
6441: }
6442: }
6443: }
6444: }
6445: return;
6446: }
6447:
6448: sub delete_env_groupprivs {
6449: my ($where,$courseroles,$possroles) = @_;
6450: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6451: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6452: unless (ref($courseroles->{$udom}) eq 'HASH') {
6453: %{$courseroles->{$udom}} =
6454: &get_my_roles('','','userroles',['active'],
6455: $possroles,[$udom],1);
6456: }
6457: if (ref($courseroles->{$udom}) eq 'HASH') {
6458: foreach my $item (keys(%{$courseroles->{$udom}})) {
6459: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6460: my $area = '/'.$cdom.'/'.$cnum;
6461: my $privkey = "user.priv.$crsrole.$area";
6462: if ($crssec ne '') {
6463: $privkey .= '/'.$crssec;
6464: }
6465: $privkey .= ".$area/$group";
6466: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6467: }
6468: }
6469: return;
6470: }
6471:
6472: sub check_adhoc_privs {
6473: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6474: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6475: if ($sec) {
6476: $cckey .= '/'.$sec;
6477: }
6478: my $setprivs;
6479: if ($env{$cckey}) {
6480: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6481: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6482: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6483: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6484: $setprivs = 1;
6485: }
6486: } else {
6487: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6488: $setprivs = 1;
6489: }
6490: return $setprivs;
6491: }
6492:
6493: sub set_adhoc_privileges {
6494: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6495: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6496: my $area = '/'.$dcdom.'/'.$pickedcourse;
6497: if ($sec ne '') {
6498: $area .= '/'.$sec;
6499: }
6500: my $spec = $role.'.'.$area;
6501: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6502: $env{'user.name'},1);
6503: my %rolehash = ();
6504: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6505: my $rolename = $1;
6506: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6507: my %domdef = &get_domain_defaults($dcdom);
6508: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6509: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6510: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6511: }
6512: }
6513: } else {
6514: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6515: }
6516: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6517: &appenv(\%userroles,[$role,'cm']);
6518: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6519: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6520: &appenv( {'request.role' => $spec,
6521: 'request.role.domain' => $dcdom,
6522: 'request.course.sec' => $sec,
6523: }
6524: );
6525: my $tadv=0;
6526: if (&allowed('adv') eq 'F') { $tadv=1; }
6527: &appenv({'request.role.adv' => $tadv});
6528: }
6529: }
6530:
6531: # --------------------------------------------------------------- get interface
6532:
6533: sub get {
6534: my ($namespace,$storearr,$udomain,$uname)=@_;
6535: my $items='';
6536: foreach my $item (@$storearr) {
6537: $items.=&escape($item).'&';
6538: }
6539: $items=~s/\&$//;
6540: if (!$udomain) { $udomain=$env{'user.domain'}; }
6541: if (!$uname) { $uname=$env{'user.name'}; }
6542: my $uhome=&homeserver($uname,$udomain);
6543:
6544: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6545: my @pairs=split(/\&/,$rep);
6546: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6547: return @pairs;
6548: }
6549: my %returnhash=();
6550: my $i=0;
6551: foreach my $item (@$storearr) {
6552: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6553: $i++;
6554: }
6555: return %returnhash;
6556: }
6557:
6558: # --------------------------------------------------------------- del interface
6559:
6560: sub del {
6561: my ($namespace,$storearr,$udomain,$uname)=@_;
6562: my $items='';
6563: foreach my $item (@$storearr) {
6564: $items.=&escape($item).'&';
6565: }
6566:
6567: $items=~s/\&$//;
6568: if (!$udomain) { $udomain=$env{'user.domain'}; }
6569: if (!$uname) { $uname=$env{'user.name'}; }
6570: my $uhome=&homeserver($uname,$udomain);
6571: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6572: }
6573:
6574: # -------------------------------------------------------------- dump interface
6575:
6576: sub unserialize {
6577: my ($rep, $escapedkeys) = @_;
6578:
6579: return {} if $rep =~ /^error/;
6580:
6581: my %returnhash=();
6582: foreach my $item (split(/\&/,$rep)) {
6583: my ($key, $value) = split(/=/, $item, 2);
6584: $key = unescape($key) unless $escapedkeys;
6585: next if $key =~ /^error: 2 /;
6586: $returnhash{$key} = &thaw_unescape($value);
6587: }
6588: #return %returnhash;
6589: return \%returnhash;
6590: }
6591:
6592: # see Lond::dump_with_regexp
6593: # if $escapedkeys hash keys won't get unescaped.
6594: sub dump {
6595: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6596: if (!$udomain) { $udomain=$env{'user.domain'}; }
6597: if (!$uname) { $uname=$env{'user.name'}; }
6598: my $uhome=&homeserver($uname,$udomain);
6599:
6600: if ($regexp) {
6601: $regexp=&escape($regexp);
6602: } else {
6603: $regexp='.';
6604: }
6605: if (grep { $_ eq $uhome } current_machine_ids()) {
6606: # user is hosted on this machine
6607: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6608: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6609: return %{unserialize($reply, $escapedkeys)};
6610: }
6611: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6612: my @pairs=split(/\&/,$rep);
6613: my %returnhash=();
6614: if (!($rep =~ /^error/ )) {
6615: foreach my $item (@pairs) {
6616: my ($key,$value)=split(/=/,$item,2);
6617: $key = unescape($key) unless $escapedkeys;
6618: #$key = &unescape($key);
6619: next if ($key =~ /^error: 2 /);
6620: $returnhash{$key}=&thaw_unescape($value);
6621: }
6622: }
6623: return %returnhash;
6624: }
6625:
6626:
6627: # --------------------------------------------------------- dumpstore interface
6628:
6629: sub dumpstore {
6630: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6631: # same as dump but keys must be escaped. They may contain colon separated
6632: # lists of values that may themself contain colons (e.g. symbs).
6633: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6634: }
6635:
6636: # -------------------------------------------------------------- keys interface
6637:
6638: sub getkeys {
6639: my ($namespace,$udomain,$uname)=@_;
6640: if (!$udomain) { $udomain=$env{'user.domain'}; }
6641: if (!$uname) { $uname=$env{'user.name'}; }
6642: my $uhome=&homeserver($uname,$udomain);
6643: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6644: my @keyarray=();
6645: foreach my $key (split(/\&/,$rep)) {
6646: next if ($key =~ /^error: 2 /);
6647: push(@keyarray,&unescape($key));
6648: }
6649: return @keyarray;
6650: }
6651:
6652: # --------------------------------------------------------------- currentdump
6653: sub currentdump {
6654: my ($courseid,$sdom,$sname)=@_;
6655: $courseid = $env{'request.course.id'} if (! defined($courseid));
6656: $sdom = $env{'user.domain'} if (! defined($sdom));
6657: $sname = $env{'user.name'} if (! defined($sname));
6658: my $uhome = &homeserver($sname,$sdom);
6659: my $rep;
6660:
6661: if (grep { $_ eq $uhome } current_machine_ids()) {
6662: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6663: $courseid)));
6664: } else {
6665: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6666: }
6667:
6668: return if ($rep =~ /^(error:|no_such_host)/);
6669: #
6670: my %returnhash=();
6671: #
6672: if ($rep eq 'unknown_cmd') {
6673: # an old lond will not know currentdump
6674: # Do a dump and make it look like a currentdump
6675: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6676: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6677: my %hash = @tmp;
6678: @tmp=();
6679: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6680: } else {
6681: my @pairs=split(/\&/,$rep);
6682: foreach my $pair (@pairs) {
6683: my ($key,$value)=split(/=/,$pair,2);
6684: my ($symb,$param) = split(/:/,$key);
6685: $returnhash{&unescape($symb)}->{&unescape($param)} =
6686: &thaw_unescape($value);
6687: }
6688: }
6689: return %returnhash;
6690: }
6691:
6692: sub convert_dump_to_currentdump{
6693: my %hash = %{shift()};
6694: my %returnhash;
6695: # Code ripped from lond, essentially. The only difference
6696: # here is the unescaping done by lonnet::dump(). Conceivably
6697: # we might run in to problems with parameter names =~ /^v\./
6698: while (my ($key,$value) = each(%hash)) {
6699: my ($v,$symb,$param) = split(/:/,$key);
6700: $symb = &unescape($symb);
6701: $param = &unescape($param);
6702: next if ($v eq 'version' || $symb eq 'keys');
6703: next if (exists($returnhash{$symb}) &&
6704: exists($returnhash{$symb}->{$param}) &&
6705: $returnhash{$symb}->{'v.'.$param} > $v);
6706: $returnhash{$symb}->{$param}=$value;
6707: $returnhash{$symb}->{'v.'.$param}=$v;
6708: }
6709: #
6710: # Remove all of the keys in the hashes which keep track of
6711: # the version of the parameter.
6712: while (my ($symb,$param_hash) = each(%returnhash)) {
6713: # use a foreach because we are going to delete from the hash.
6714: foreach my $key (keys(%$param_hash)) {
6715: delete($param_hash->{$key}) if ($key =~ /^v\./);
6716: }
6717: }
6718: return \%returnhash;
6719: }
6720:
6721: # ------------------------------------------------------ critical inc interface
6722:
6723: sub cinc {
6724: return &inc(@_,'critical');
6725: }
6726:
6727: # --------------------------------------------------------------- inc interface
6728:
6729: sub inc {
6730: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6731: if (!$udomain) { $udomain=$env{'user.domain'}; }
6732: if (!$uname) { $uname=$env{'user.name'}; }
6733: my $uhome=&homeserver($uname,$udomain);
6734: my $items='';
6735: if (! ref($store)) {
6736: # got a single value, so use that instead
6737: $items = &escape($store).'=&';
6738: } elsif (ref($store) eq 'SCALAR') {
6739: $items = &escape($$store).'=&';
6740: } elsif (ref($store) eq 'ARRAY') {
6741: $items = join('=&',map {&escape($_);} @{$store});
6742: } elsif (ref($store) eq 'HASH') {
6743: while (my($key,$value) = each(%{$store})) {
6744: $items.= &escape($key).'='.&escape($value).'&';
6745: }
6746: }
6747: $items=~s/\&$//;
6748: if ($critical) {
6749: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6750: } else {
6751: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6752: }
6753: }
6754:
6755: # --------------------------------------------------------------- put interface
6756:
6757: sub put {
6758: my ($namespace,$storehash,$udomain,$uname)=@_;
6759: if (!$udomain) { $udomain=$env{'user.domain'}; }
6760: if (!$uname) { $uname=$env{'user.name'}; }
6761: my $uhome=&homeserver($uname,$udomain);
6762: my $items='';
6763: foreach my $item (keys(%$storehash)) {
6764: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6765: }
6766: $items=~s/\&$//;
6767: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6768: }
6769:
6770: # ------------------------------------------------------------ newput interface
6771:
6772: sub newput {
6773: my ($namespace,$storehash,$udomain,$uname)=@_;
6774: if (!$udomain) { $udomain=$env{'user.domain'}; }
6775: if (!$uname) { $uname=$env{'user.name'}; }
6776: my $uhome=&homeserver($uname,$udomain);
6777: my $items='';
6778: foreach my $key (keys(%$storehash)) {
6779: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6780: }
6781: $items=~s/\&$//;
6782: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6783: }
6784:
6785: # --------------------------------------------------------- putstore interface
6786:
6787: sub putstore {
6788: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6789: if (!$udomain) { $udomain=$env{'user.domain'}; }
6790: if (!$uname) { $uname=$env{'user.name'}; }
6791: my $uhome=&homeserver($uname,$udomain);
6792: my $items='';
6793: foreach my $key (keys(%$storehash)) {
6794: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6795: }
6796: $items=~s/\&$//;
6797: my $esc_symb=&escape($symb);
6798: my $esc_v=&escape($version);
6799: my $reply =
6800: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6801: $uhome);
6802: if (($tolog) && ($reply eq 'ok')) {
6803: my $namevalue='';
6804: foreach my $key (keys(%{$storehash})) {
6805: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6806: }
6807: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6808: '&host='.&escape($perlvar{'lonHostID'}).
6809: '&version='.$esc_v.
6810: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6811: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6812: }
6813: if ($reply eq 'unknown_cmd') {
6814: # gfall back to way things use to be done
6815: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6816: $uname);
6817: }
6818: return $reply;
6819: }
6820:
6821: sub old_putstore {
6822: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6823: if (!$udomain) { $udomain=$env{'user.domain'}; }
6824: if (!$uname) { $uname=$env{'user.name'}; }
6825: my $uhome=&homeserver($uname,$udomain);
6826: my %newstorehash;
6827: foreach my $item (keys(%$storehash)) {
6828: my $key = $version.':'.&escape($symb).':'.$item;
6829: $newstorehash{$key} = $storehash->{$item};
6830: }
6831: my $items='';
6832: my %allitems = ();
6833: foreach my $item (keys(%newstorehash)) {
6834: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6835: my $key = $1.':keys:'.$2;
6836: $allitems{$key} .= $3.':';
6837: }
6838: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6839: }
6840: foreach my $item (keys(%allitems)) {
6841: $allitems{$item} =~ s/\:$//;
6842: $items.= $item.'='.$allitems{$item}.'&';
6843: }
6844: $items=~s/\&$//;
6845: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6846: }
6847:
6848: # ------------------------------------------------------ critical put interface
6849:
6850: sub cput {
6851: my ($namespace,$storehash,$udomain,$uname)=@_;
6852: if (!$udomain) { $udomain=$env{'user.domain'}; }
6853: if (!$uname) { $uname=$env{'user.name'}; }
6854: my $uhome=&homeserver($uname,$udomain);
6855: my $items='';
6856: foreach my $item (keys(%$storehash)) {
6857: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6858: }
6859: $items=~s/\&$//;
6860: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6861: }
6862:
6863: # -------------------------------------------------------------- eget interface
6864:
6865: sub eget {
6866: my ($namespace,$storearr,$udomain,$uname)=@_;
6867: my $items='';
6868: foreach my $item (@$storearr) {
6869: $items.=&escape($item).'&';
6870: }
6871: $items=~s/\&$//;
6872: if (!$udomain) { $udomain=$env{'user.domain'}; }
6873: if (!$uname) { $uname=$env{'user.name'}; }
6874: my $uhome=&homeserver($uname,$udomain);
6875: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6876: my @pairs=split(/\&/,$rep);
6877: my %returnhash=();
6878: my $i=0;
6879: foreach my $item (@$storearr) {
6880: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6881: $i++;
6882: }
6883: return %returnhash;
6884: }
6885:
6886: # ------------------------------------------------------------ tmpput interface
6887: sub tmpput {
6888: my ($storehash,$server,$context)=@_;
6889: my $items='';
6890: foreach my $item (keys(%$storehash)) {
6891: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6892: }
6893: $items=~s/\&$//;
6894: if (defined($context)) {
6895: $items .= ':'.&escape($context);
6896: }
6897: return &reply("tmpput:$items",$server);
6898: }
6899:
6900: # ------------------------------------------------------------ tmpget interface
6901: sub tmpget {
6902: my ($token,$server)=@_;
6903: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6904: my $rep=&reply("tmpget:$token",$server);
6905: my %returnhash;
6906: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6907: return %returnhash;
6908: }
6909: foreach my $item (split(/\&/,$rep)) {
6910: my ($key,$value)=split(/=/,$item);
6911: $returnhash{&unescape($key)}=&thaw_unescape($value);
6912: }
6913: return %returnhash;
6914: }
6915:
6916: # ------------------------------------------------------------ tmpdel interface
6917: sub tmpdel {
6918: my ($token,$server)=@_;
6919: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6920: return &reply("tmpdel:$token",$server);
6921: }
6922:
6923: # ------------------------------------------------------------ get_timebased_id
6924:
6925: sub get_timebased_id {
6926: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6927: $maxtries) = @_;
6928: my ($newid,$error,$dellock);
6929: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6930: return ('','ok','invalid call to get suffix');
6931: }
6932:
6933: # set defaults for any optional args for which values were not supplied
6934: if ($who eq '') {
6935: $who = $env{'user.name'}.':'.$env{'user.domain'};
6936: }
6937: if (!$locktries) {
6938: $locktries = 3;
6939: }
6940: if (!$maxtries) {
6941: $maxtries = 10;
6942: }
6943:
6944: if (($cdom eq '') || ($cnum eq '')) {
6945: if ($env{'request.course.id'}) {
6946: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6947: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6948: }
6949: if (($cdom eq '') || ($cnum eq '')) {
6950: return ('','ok','call to get suffix not in course context');
6951: }
6952: }
6953:
6954: # construct locking item
6955: my $lockhash = {
6956: $prefix."\0".'locked_'.$keyid => $who,
6957: };
6958: my $tries = 0;
6959:
6960: # attempt to get lock on nohist_$namespace file
6961: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6962: while (($gotlock ne 'ok') && $tries <$locktries) {
6963: $tries ++;
6964: sleep 1;
6965: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6966: }
6967:
6968: # attempt to get unique identifier, based on current timestamp
6969: if ($gotlock eq 'ok') {
6970: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6971: my $id = time;
6972: $newid = $id;
6973: if ($idtype eq 'addcode') {
6974: $newid .= &sixnum_code();
6975: }
6976: my $idtries = 0;
6977: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6978: if ($idtype eq 'concat') {
6979: $newid = $id.$idtries;
6980: } elsif ($idtype eq 'addcode') {
6981: $newid = $newid.&sixnum_code();
6982: } else {
6983: $newid ++;
6984: }
6985: $idtries ++;
6986: }
6987: if (!exists($inuse{$prefix."\0".$newid})) {
6988: my %new_item = (
6989: $prefix."\0".$newid => $who,
6990: );
6991: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6992: $cdom,$cnum);
6993: if ($putresult ne 'ok') {
6994: undef($newid);
6995: $error = 'error saving new item: '.$putresult;
6996: }
6997: } else {
6998: undef($newid);
6999: $error = ('error: no unique suffix available for the new item ');
7000: }
7001: # remove lock
7002: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7003: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7004: } else {
7005: $error = "error: could not obtain lockfile\n";
7006: $dellock = 'ok';
7007: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7008: $dellock = 'nolock';
7009: }
7010: }
7011: return ($newid,$dellock,$error);
7012: }
7013:
7014: sub sixnum_code {
7015: my $code;
7016: for (0..6) {
7017: $code .= int( rand(9) );
7018: }
7019: return $code;
7020: }
7021:
7022: # -------------------------------------------------- portfolio access checking
7023:
7024: sub portfolio_access {
7025: my ($requrl,$clientip) = @_;
7026: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7027: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7028: if ($result) {
7029: my %setters;
7030: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7031: my ($startblock,$endblock) =
7032: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7033: if ($startblock && $endblock) {
7034: return 'B';
7035: }
7036: } else {
7037: my ($startblock,$endblock) =
7038: &Apache::loncommon::blockcheck(\%setters,'port');
7039: if ($startblock && $endblock) {
7040: return 'B';
7041: }
7042: }
7043: }
7044: if ($result eq 'ok') {
7045: return 'F';
7046: } elsif ($result =~ /^[^:]+:guest_/) {
7047: return 'A';
7048: }
7049: return '';
7050: }
7051:
7052: sub get_portfolio_access {
7053: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7054:
7055: if (!ref($access_hash)) {
7056: my $current_perms = &get_portfile_permissions($udom,$unum);
7057: my %access_controls = &get_access_controls($current_perms,$group,
7058: $file_name);
7059: $access_hash = $access_controls{$file_name};
7060: }
7061:
7062: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7063: my $now = time;
7064: if (ref($access_hash) eq 'HASH') {
7065: foreach my $key (keys(%{$access_hash})) {
7066: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7067: if ($start > $now) {
7068: next;
7069: }
7070: if ($end && $end<$now) {
7071: next;
7072: }
7073: if ($scope eq 'public') {
7074: $public = $key;
7075: last;
7076: } elsif ($scope eq 'guest') {
7077: $guest = $key;
7078: } elsif ($scope eq 'domains') {
7079: push(@domains,$key);
7080: } elsif ($scope eq 'users') {
7081: push(@users,$key);
7082: } elsif ($scope eq 'course') {
7083: push(@courses,$key);
7084: } elsif ($scope eq 'group') {
7085: push(@groups,$key);
7086: } elsif ($scope eq 'ip') {
7087: push(@ips,$key);
7088: }
7089: }
7090: if ($public) {
7091: return 'ok';
7092: } elsif (@ips > 0) {
7093: my $allowed;
7094: foreach my $ipkey (@ips) {
7095: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7096: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7097: $allowed = 1;
7098: last;
7099: }
7100: }
7101: }
7102: if ($allowed) {
7103: return 'ok';
7104: }
7105: }
7106: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7107: if ($guest) {
7108: return $guest;
7109: }
7110: } else {
7111: if (@domains > 0) {
7112: foreach my $domkey (@domains) {
7113: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7114: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7115: return 'ok';
7116: }
7117: }
7118: }
7119: }
7120: if (@users > 0) {
7121: foreach my $userkey (@users) {
7122: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7123: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7124: if (ref($item) eq 'HASH') {
7125: if (($item->{'uname'} eq $env{'user.name'}) &&
7126: ($item->{'udom'} eq $env{'user.domain'})) {
7127: return 'ok';
7128: }
7129: }
7130: }
7131: }
7132: }
7133: }
7134: my %roleshash;
7135: my @courses_and_groups = @courses;
7136: push(@courses_and_groups,@groups);
7137: if (@courses_and_groups > 0) {
7138: my (%allgroups,%allroles);
7139: my ($start,$end,$role,$sec,$group);
7140: foreach my $envkey (%env) {
7141: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7142: my $cid = $2.'_'.$3;
7143: if ($1 eq 'gr') {
7144: $group = $4;
7145: $allgroups{$cid}{$group} = $env{$envkey};
7146: } else {
7147: if ($4 eq '') {
7148: $sec = 'none';
7149: } else {
7150: $sec = $4;
7151: }
7152: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7153: }
7154: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7155: my $cid = $2.'_'.$3;
7156: if ($4 eq '') {
7157: $sec = 'none';
7158: } else {
7159: $sec = $4;
7160: }
7161: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7162: }
7163: }
7164: if (keys(%allroles) == 0) {
7165: return;
7166: }
7167: foreach my $key (@courses_and_groups) {
7168: my %content = %{$$access_hash{$key}};
7169: my $cnum = $content{'number'};
7170: my $cdom = $content{'domain'};
7171: my $cid = $cdom.'_'.$cnum;
7172: if (!exists($allroles{$cid})) {
7173: next;
7174: }
7175: foreach my $role_id (keys(%{$content{'roles'}})) {
7176: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7177: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7178: my @status = @{$content{'roles'}{$role_id}{'access'}};
7179: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7180: foreach my $role (keys(%{$allroles{$cid}})) {
7181: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7182: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7183: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7184: if (grep/^all$/,@sections) {
7185: return 'ok';
7186: } else {
7187: if (grep/^$sec$/,@sections) {
7188: return 'ok';
7189: }
7190: }
7191: }
7192: }
7193: if (keys(%{$allgroups{$cid}}) == 0) {
7194: if (grep/^none$/,@groups) {
7195: return 'ok';
7196: }
7197: } else {
7198: if (grep/^all$/,@groups) {
7199: return 'ok';
7200: }
7201: foreach my $group (keys(%{$allgroups{$cid}})) {
7202: if (grep/^$group$/,@groups) {
7203: return 'ok';
7204: }
7205: }
7206: }
7207: }
7208: }
7209: }
7210: }
7211: }
7212: if ($guest) {
7213: return $guest;
7214: }
7215: }
7216: }
7217: return;
7218: }
7219:
7220: sub course_group_datechecker {
7221: my ($dates,$now,$status) = @_;
7222: my ($start,$end) = split(/\./,$dates);
7223: if (!$start && !$end) {
7224: return 'ok';
7225: }
7226: if (grep/^active$/,@{$status}) {
7227: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7228: return 'ok';
7229: }
7230: }
7231: if (grep/^previous$/,@{$status}) {
7232: if ($end > $now ) {
7233: return 'ok';
7234: }
7235: }
7236: if (grep/^future$/,@{$status}) {
7237: if ($start > $now) {
7238: return 'ok';
7239: }
7240: }
7241: return;
7242: }
7243:
7244: sub parse_portfolio_url {
7245: my ($url) = @_;
7246:
7247: my ($type,$udom,$unum,$group,$file_name);
7248:
7249: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7250: $type = 1;
7251: $udom = $1;
7252: $unum = $2;
7253: $file_name = $3;
7254: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7255: $type = 2;
7256: $udom = $1;
7257: $unum = $2;
7258: $group = $3;
7259: $file_name = $3.'/'.$4;
7260: }
7261: if (wantarray) {
7262: return ($type,$udom,$unum,$file_name,$group);
7263: }
7264: return $type;
7265: }
7266:
7267: sub is_portfolio_url {
7268: my ($url) = @_;
7269: return scalar(&parse_portfolio_url($url));
7270: }
7271:
7272: sub is_portfolio_file {
7273: my ($file) = @_;
7274: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7275: return 1;
7276: }
7277: return;
7278: }
7279:
7280: sub usertools_access {
7281: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7282: my ($access,%tools);
7283: if ($context eq '') {
7284: $context = 'tools';
7285: }
7286: if ($context eq 'requestcourses') {
7287: %tools = (
7288: official => 1,
7289: unofficial => 1,
7290: community => 1,
7291: textbook => 1,
7292: placement => 1,
7293: lti => 1,
7294: );
7295: } elsif ($context eq 'requestauthor') {
7296: %tools = (
7297: requestauthor => 1,
7298: );
7299: } else {
7300: %tools = (
7301: aboutme => 1,
7302: blog => 1,
7303: webdav => 1,
7304: portfolio => 1,
7305: );
7306: }
7307: return if (!defined($tools{$tool}));
7308:
7309: if (($udom eq '') || ($uname eq '')) {
7310: $udom = $env{'user.domain'};
7311: $uname = $env{'user.name'};
7312: }
7313:
7314: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7315: if ($action ne 'reload') {
7316: if ($context eq 'requestcourses') {
7317: return $env{'environment.canrequest.'.$tool};
7318: } elsif ($context eq 'requestauthor') {
7319: return $env{'environment.canrequest.author'};
7320: } else {
7321: return $env{'environment.availabletools.'.$tool};
7322: }
7323: }
7324: }
7325:
7326: my ($toolstatus,$inststatus,$envkey);
7327: if ($context eq 'requestauthor') {
7328: $envkey = $context;
7329: } else {
7330: $envkey = $context.'.'.$tool;
7331: }
7332:
7333: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7334: ($action ne 'reload')) {
7335: $toolstatus = $env{'environment.'.$envkey};
7336: $inststatus = $env{'environment.inststatus'};
7337: } else {
7338: if (ref($userenvref) eq 'HASH') {
7339: $toolstatus = $userenvref->{$envkey};
7340: $inststatus = $userenvref->{'inststatus'};
7341: } else {
7342: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7343: $toolstatus = $userenv{$envkey};
7344: $inststatus = $userenv{'inststatus'};
7345: }
7346: }
7347:
7348: if ($toolstatus ne '') {
7349: if ($toolstatus) {
7350: $access = 1;
7351: } else {
7352: $access = 0;
7353: }
7354: return $access;
7355: }
7356:
7357: my ($is_adv,%domdef);
7358: if (ref($is_advref) eq 'HASH') {
7359: $is_adv = $is_advref->{'is_adv'};
7360: } else {
7361: $is_adv = &is_advanced_user($udom,$uname);
7362: }
7363: if (ref($domdefref) eq 'HASH') {
7364: %domdef = %{$domdefref};
7365: } else {
7366: %domdef = &get_domain_defaults($udom);
7367: }
7368: if (ref($domdef{$tool}) eq 'HASH') {
7369: if ($is_adv) {
7370: if ($domdef{$tool}{'_LC_adv'} ne '') {
7371: if ($domdef{$tool}{'_LC_adv'}) {
7372: $access = 1;
7373: } else {
7374: $access = 0;
7375: }
7376: return $access;
7377: }
7378: }
7379: if ($inststatus ne '') {
7380: my ($hasaccess,$hasnoaccess);
7381: foreach my $affiliation (split(/:/,$inststatus)) {
7382: if ($domdef{$tool}{$affiliation} ne '') {
7383: if ($domdef{$tool}{$affiliation}) {
7384: $hasaccess = 1;
7385: } else {
7386: $hasnoaccess = 1;
7387: }
7388: }
7389: }
7390: if ($hasaccess || $hasnoaccess) {
7391: if ($hasaccess) {
7392: $access = 1;
7393: } elsif ($hasnoaccess) {
7394: $access = 0;
7395: }
7396: return $access;
7397: }
7398: } else {
7399: if ($domdef{$tool}{'default'} ne '') {
7400: if ($domdef{$tool}{'default'}) {
7401: $access = 1;
7402: } elsif ($domdef{$tool}{'default'} == 0) {
7403: $access = 0;
7404: }
7405: return $access;
7406: }
7407: }
7408: } else {
7409: if (($context eq 'tools') && ($tool ne 'webdav')) {
7410: $access = 1;
7411: } else {
7412: $access = 0;
7413: }
7414: return $access;
7415: }
7416: }
7417:
7418: sub is_course_owner {
7419: my ($cdom,$cnum,$udom,$uname) = @_;
7420: if (($udom eq '') || ($uname eq '')) {
7421: $udom = $env{'user.domain'};
7422: $uname = $env{'user.name'};
7423: }
7424: unless (($udom eq '') || ($uname eq '')) {
7425: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7426: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7427: return 1;
7428: } else {
7429: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7430: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7431: return 1;
7432: }
7433: }
7434: }
7435: }
7436: return;
7437: }
7438:
7439: sub is_advanced_user {
7440: my ($udom,$uname) = @_;
7441: if ($udom ne '' && $uname ne '') {
7442: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7443: if (wantarray) {
7444: return ($env{'user.adv'},$env{'user.author'});
7445: } else {
7446: return $env{'user.adv'};
7447: }
7448: }
7449: }
7450: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7451: my %allroles;
7452: my ($is_adv,$is_author);
7453: foreach my $role (keys(%roleshash)) {
7454: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7455: my $area = '/'.$tdomain.'/'.$trest;
7456: if ($sec ne '') {
7457: $area .= '/'.$sec;
7458: }
7459: if (($area ne '') && ($trole ne '')) {
7460: my $spec=$trole.'.'.$area;
7461: if ($trole =~ /^cr\//) {
7462: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7463: } elsif ($trole ne 'gr') {
7464: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7465: }
7466: if ($trole eq 'au') {
7467: $is_author = 1;
7468: }
7469: }
7470: }
7471: foreach my $role (keys(%allroles)) {
7472: last if ($is_adv);
7473: foreach my $item (split(/:/,$allroles{$role})) {
7474: if ($item ne '') {
7475: my ($privilege,$restrictions)=split(/&/,$item);
7476: if ($privilege eq 'adv') {
7477: $is_adv = 1;
7478: last;
7479: }
7480: }
7481: }
7482: }
7483: if (wantarray) {
7484: return ($is_adv,$is_author);
7485: }
7486: return $is_adv;
7487: }
7488:
7489: sub check_can_request {
7490: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7491: my $canreq = 0;
7492: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7493: $uname = $env{'user.name'};
7494: $udom = $env{'user.domain'};
7495: }
7496: my ($types,$typename) = &Apache::loncommon::course_types();
7497: my @options = ('approval','validate','autolimit');
7498: my $optregex = join('|',@options);
7499: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7500: foreach my $type (@{$types}) {
7501: if (&usertools_access($uname,$udom,$type,undef,
7502: 'requestcourses')) {
7503: $canreq ++;
7504: if (ref($request_domains) eq 'HASH') {
7505: push(@{$request_domains->{$type}},$udom);
7506: }
7507: if ($dom eq $udom) {
7508: $can_request->{$type} = 1;
7509: }
7510: }
7511: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7512: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7513: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7514: if (@curr > 0) {
7515: foreach my $item (@curr) {
7516: if (ref($request_domains) eq 'HASH') {
7517: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7518: if ($otherdom ne '') {
7519: if (ref($request_domains->{$type}) eq 'ARRAY') {
7520: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7521: push(@{$request_domains->{$type}},$otherdom);
7522: }
7523: } else {
7524: push(@{$request_domains->{$type}},$otherdom);
7525: }
7526: }
7527: }
7528: }
7529: unless ($dom eq $env{'user.domain'}) {
7530: $canreq ++;
7531: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7532: $can_request->{$type} = 1;
7533: }
7534: }
7535: }
7536: }
7537: }
7538: }
7539: return $canreq;
7540: }
7541:
7542: # ---------------------------------------------- Custom access rule evaluation
7543:
7544: sub customaccess {
7545: my ($priv,$uri)=@_;
7546: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7547: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7548: $udom = &LONCAPA::clean_domain($udom);
7549: $ucrs = &LONCAPA::clean_username($ucrs);
7550: my $access=0;
7551: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7552: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7553: if ($type eq 'user') {
7554: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7555: my ($tdom,$tuname)=split(m{/},$scope);
7556: if ($tdom) {
7557: if ($tdom ne $env{'user.domain'}) { next; }
7558: }
7559: if ($tuname) {
7560: if ($tuname ne $env{'user.name'}) { next; }
7561: }
7562: $access=($effect eq 'allow');
7563: last;
7564: }
7565: } else {
7566: if ($role) {
7567: if ($role ne $urole) { next; }
7568: }
7569: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7570: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7571: if ($tdom) {
7572: if ($tdom ne $udom) { next; }
7573: }
7574: if ($tcrs) {
7575: if ($tcrs ne $ucrs) { next; }
7576: }
7577: if ($tsec) {
7578: if ($tsec ne $usec) { next; }
7579: }
7580: $access=($effect eq 'allow');
7581: last;
7582: }
7583: if ($realm eq '' && $role eq '') {
7584: $access=($effect eq 'allow');
7585: }
7586: }
7587: }
7588: return $access;
7589: }
7590:
7591: # ------------------------------------------------- Check for a user privilege
7592:
7593: sub allowed {
7594: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7595: my $ver_orguri=$uri;
7596: $uri=&deversion($uri);
7597: my $orguri=$uri;
7598: $uri=&declutter($uri);
7599:
7600: if ($priv eq 'evb') {
7601: # Evade communication block restrictions for specified role in a course
7602: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7603: return $1;
7604: } else {
7605: return;
7606: }
7607: }
7608:
7609: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7610: # Free bre access to adm and meta resources
7611: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7612: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7613: && ($priv eq 'bre')) {
7614: return 'F';
7615: }
7616:
7617: # Free bre access to user's own portfolio contents
7618: my ($space,$domain,$name,@dir)=split('/',$uri);
7619: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7620: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7621: my %setters;
7622: my ($startblock,$endblock) =
7623: &Apache::loncommon::blockcheck(\%setters,'port');
7624: if ($startblock && $endblock) {
7625: return 'B';
7626: } else {
7627: return 'F';
7628: }
7629: }
7630:
7631: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7632: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7633: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7634: if (exists($env{'request.course.id'})) {
7635: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7636: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7637: if (($domain eq $cdom) && ($name eq $cnum)) {
7638: my $courseprivid=$env{'request.course.id'};
7639: $courseprivid=~s/\_/\//;
7640: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7641: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7642: return $1;
7643: } else {
7644: if ($env{'request.course.sec'}) {
7645: $courseprivid.='/'.$env{'request.course.sec'};
7646: }
7647: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7648: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7649: return $2;
7650: }
7651: }
7652: }
7653: }
7654: }
7655:
7656: # Free bre to public access
7657:
7658: if ($priv eq 'bre') {
7659: my $copyright;
7660: unless ($uri =~ /ext\.tool/) {
7661: $copyright=&metadata($uri,'copyright');
7662: }
7663: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7664: return 'F';
7665: }
7666: if ($copyright eq 'priv') {
7667: $uri=~/([^\/]+)\/([^\/]+)\//;
7668: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7669: return '';
7670: }
7671: }
7672: if ($copyright eq 'domain') {
7673: $uri=~/([^\/]+)\/([^\/]+)\//;
7674: unless (($env{'user.domain'} eq $1) ||
7675: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7676: return '';
7677: }
7678: }
7679: if ($env{'request.role'}=~ /li\.\//) {
7680: # Library role, so allow browsing of resources in this domain.
7681: return 'F';
7682: }
7683: if ($copyright eq 'custom') {
7684: unless (&customaccess($priv,$uri)) { return ''; }
7685: }
7686: }
7687: # Domain coordinator is trying to create a course
7688: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7689: # uri is the requested domain in this case.
7690: # comparison to 'request.role.domain' shows if the user has selected
7691: # a role of dc for the domain in question.
7692: return 'F' if ($uri eq $env{'request.role.domain'});
7693: }
7694:
7695: my $thisallowed='';
7696: my $statecond=0;
7697: my $courseprivid='';
7698:
7699: my $ownaccess;
7700: # Community Coordinator or Assistant Co-author browsing resource space.
7701: if (($priv eq 'bro') && ($env{'user.author'})) {
7702: if ($uri eq '') {
7703: $ownaccess = 1;
7704: } else {
7705: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7706: my $udom = $env{'user.domain'};
7707: my $uname = $env{'user.name'};
7708: if ($uri =~ m{^\Q$udom\E/?$}) {
7709: $ownaccess = 1;
7710: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7711: unless ($uri =~ m{\.\./}) {
7712: $ownaccess = 1;
7713: }
7714: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7715: my $now = time;
7716: if ($uri =~ m{^([^/]+)/?$}) {
7717: my $adom = $1;
7718: foreach my $key (keys(%env)) {
7719: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7720: my ($start,$end) = split('.',$env{$key});
7721: if (($now >= $start) && (!$end || $end < $now)) {
7722: $ownaccess = 1;
7723: last;
7724: }
7725: }
7726: }
7727: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7728: my $adom = $1;
7729: my $aname = $2;
7730: foreach my $role ('ca','aa') {
7731: if ($env{"user.role.$role./$adom/$aname"}) {
7732: my ($start,$end) =
7733: split('.',$env{"user.role.$role./$adom/$aname"});
7734: if (($now >= $start) && (!$end || $end < $now)) {
7735: $ownaccess = 1;
7736: last;
7737: }
7738: }
7739: }
7740: }
7741: }
7742: }
7743: }
7744: }
7745:
7746: # Course
7747:
7748: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7749: unless (($priv eq 'bro') && (!$ownaccess)) {
7750: $thisallowed.=$1;
7751: }
7752: }
7753:
7754: # Domain
7755:
7756: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7757: =~/\Q$priv\E\&([^\:]*)/) {
7758: unless (($priv eq 'bro') && (!$ownaccess)) {
7759: $thisallowed.=$1;
7760: }
7761: }
7762:
7763: # User who is not author or co-author might still be able to edit
7764: # resource of an author in the domain (e.g., if Domain Coordinator).
7765: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7766: (&allowed('mdc',$env{'request.course.id'}))) {
7767: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7768: $thisallowed.=$1;
7769: }
7770: }
7771:
7772: # Course: uri itself is a course
7773: my $courseuri=$uri;
7774: $courseuri=~s/\_(\d)/\/$1/;
7775: $courseuri=~s/^([^\/])/\/$1/;
7776:
7777: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7778: =~/\Q$priv\E\&([^\:]*)/) {
7779: unless (($priv eq 'bro') && (!$ownaccess)) {
7780: $thisallowed.=$1;
7781: }
7782: }
7783:
7784: # URI is an uploaded document for this course, default permissions don't matter
7785: # not allowing 'edit' access (editupload) to uploaded course docs
7786: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7787: $thisallowed='';
7788: my ($match)=&is_on_map($uri);
7789: if ($match) {
7790: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7791: =~/\Q$priv\E\&([^\:]*)/) {
7792: my $value = $1;
7793: if ($noblockcheck) {
7794: $thisallowed.=$value;
7795: } else {
7796: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7797: if (@blockers > 0) {
7798: $thisallowed = 'B';
7799: } else {
7800: $thisallowed.=$value;
7801: }
7802: }
7803: }
7804: } else {
7805: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7806: if ($refuri) {
7807: if ($refuri =~ m|^/adm/|) {
7808: $thisallowed='F';
7809: } else {
7810: $refuri=&declutter($refuri);
7811: my ($match) = &is_on_map($refuri);
7812: if ($match) {
7813: if ($noblockcheck) {
7814: $thisallowed='F';
7815: } else {
7816: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7817: if (@blockers > 0) {
7818: $thisallowed = 'B';
7819: } else {
7820: $thisallowed='F';
7821: }
7822: }
7823: }
7824: }
7825: }
7826: }
7827: }
7828:
7829: if ($priv eq 'bre'
7830: && $thisallowed ne 'F'
7831: && $thisallowed ne '2'
7832: && &is_portfolio_url($uri)) {
7833: $thisallowed = &portfolio_access($uri,$clientip);
7834: }
7835:
7836: # Full access at system, domain or course-wide level? Exit.
7837: if ($thisallowed=~/F/) {
7838: return 'F';
7839: }
7840:
7841: # If this is generating or modifying users, exit with special codes
7842:
7843: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7844: if (($priv eq 'cca') || ($priv eq 'caa')) {
7845: my ($audom,$auname)=split('/',$uri);
7846: # no author name given, so this just checks on the general right to make a co-author in this domain
7847: unless ($auname) { return $thisallowed; }
7848: # an author name is given, so we are about to actually make a co-author for a certain account
7849: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7850: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7851: ($audom ne $env{'request.role.domain'}))) { return ''; }
7852: }
7853: return $thisallowed;
7854: }
7855: #
7856: # Gathered so far: system, domain and course wide privileges
7857: #
7858: # Course: See if uri or referer is an individual resource that is part of
7859: # the course
7860:
7861: if ($env{'request.course.id'}) {
7862:
7863: $courseprivid=$env{'request.course.id'};
7864: if ($env{'request.course.sec'}) {
7865: $courseprivid.='/'.$env{'request.course.sec'};
7866: }
7867: $courseprivid=~s/\_/\//;
7868: my $checkreferer=1;
7869: my ($match,$cond)=&is_on_map($uri);
7870: if ($match) {
7871: $statecond=$cond;
7872: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7873: =~/\Q$priv\E\&([^\:]*)/) {
7874: my $value = $1;
7875: if ($priv eq 'bre') {
7876: if ($noblockcheck) {
7877: $thisallowed.=$value;
7878: } else {
7879: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7880: if (@blockers > 0) {
7881: $thisallowed = 'B';
7882: } else {
7883: $thisallowed.=$value;
7884: }
7885: }
7886: } else {
7887: $thisallowed.=$value;
7888: }
7889: $checkreferer=0;
7890: }
7891: }
7892:
7893: if ($checkreferer) {
7894: my $refuri=$env{'httpref.'.$orguri};
7895: unless ($refuri) {
7896: foreach my $key (keys(%env)) {
7897: if ($key=~/^httpref\..*\*/) {
7898: my $pattern=$key;
7899: $pattern=~s/^httpref\.\/res\///;
7900: $pattern=~s/\*/\[\^\/\]\+/g;
7901: $pattern=~s/\//\\\//g;
7902: if ($orguri=~/$pattern/) {
7903: $refuri=$env{$key};
7904: }
7905: }
7906: }
7907: }
7908:
7909: if ($refuri) {
7910: $refuri=&declutter($refuri);
7911: my ($match,$cond)=&is_on_map($refuri);
7912: if ($match) {
7913: my $refstatecond=$cond;
7914: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7915: =~/\Q$priv\E\&([^\:]*)/) {
7916: my $value = $1;
7917: if ($priv eq 'bre') {
7918: if ($noblockcheck) {
7919: $thisallowed.=$value;
7920: } else {
7921: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7922: if (@blockers > 0) {
7923: $thisallowed = 'B';
7924: } else {
7925: $thisallowed.=$value;
7926: }
7927: }
7928: } else {
7929: $thisallowed.=$value;
7930: }
7931: $uri=$refuri;
7932: $statecond=$refstatecond;
7933: }
7934: }
7935: }
7936: }
7937: }
7938:
7939: #
7940: # Gathered now: all privileges that could apply, and condition number
7941: #
7942: #
7943: # Full or no access?
7944: #
7945:
7946: if ($thisallowed=~/F/) {
7947: return 'F';
7948: }
7949:
7950: unless ($thisallowed) {
7951: return '';
7952: }
7953:
7954: # Restrictions exist, deal with them
7955: #
7956: # C:according to course preferences
7957: # R:according to resource settings
7958: # L:unless locked
7959: # X:according to user session state
7960: #
7961:
7962: # Possibly locked functionality, check all courses
7963: # Locks might take effect only after 10 minutes cache expiration for other
7964: # courses, and 2 minutes for current course
7965:
7966: my $envkey;
7967: if ($thisallowed=~/L/) {
7968: foreach $envkey (keys(%env)) {
7969: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7970: my $courseid=$2;
7971: my $roleid=$1.'.'.$2;
7972: $courseid=~s/^\///;
7973: my $expiretime=600;
7974: if ($env{'request.role'} eq $roleid) {
7975: $expiretime=120;
7976: }
7977: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7978: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7979: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7980: &coursedescription($courseid,{'freshen_cache' => 1});
7981: }
7982: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7983: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7984: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7985: &log($env{'user.domain'},$env{'user.name'},
7986: $env{'user.home'},
7987: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7988: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7989: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7990: return '';
7991: }
7992: }
7993: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7994: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7995: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7996: &log($env{'user.domain'},$env{'user.name'},
7997: $env{'user.home'},
7998: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7999: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8000: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8001: return '';
8002: }
8003: }
8004: }
8005: }
8006: }
8007:
8008: #
8009: # Rest of the restrictions depend on selected course
8010: #
8011:
8012: unless ($env{'request.course.id'}) {
8013: if ($thisallowed eq 'A') {
8014: return 'A';
8015: } elsif ($thisallowed eq 'B') {
8016: return 'B';
8017: } else {
8018: return '1';
8019: }
8020: }
8021:
8022: #
8023: # Now user is definitely in a course
8024: #
8025:
8026:
8027: # Course preferences
8028:
8029: if ($thisallowed=~/C/) {
8030: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8031: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8032: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8033: =~/\Q$rolecode\E/) {
8034: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8035: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8036: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8037: $env{'request.course.id'});
8038: }
8039: return '';
8040: }
8041:
8042: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8043: =~/\Q$unamedom\E/) {
8044: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8045: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8046: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8047: $env{'request.course.id'});
8048: }
8049: return '';
8050: }
8051: }
8052:
8053: # Resource preferences
8054:
8055: if ($thisallowed=~/R/) {
8056: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8057: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8058: if (($priv ne 'pch') && ($priv ne 'plc')) {
8059: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8060: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8061: }
8062: return '';
8063: }
8064: }
8065:
8066: # Restricted by state or randomout?
8067:
8068: if ($thisallowed=~/X/) {
8069: if ($env{'acc.randomout'}) {
8070: if (!$symb) { $symb=&symbread($uri,1); }
8071: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8072: return '';
8073: }
8074: }
8075: if (&condval($statecond)) {
8076: return '2';
8077: } else {
8078: return '';
8079: }
8080: }
8081:
8082: if ($thisallowed eq 'A') {
8083: return 'A';
8084: } elsif ($thisallowed eq 'B') {
8085: return 'B';
8086: }
8087: return 'F';
8088: }
8089:
8090: # ------------------------------------------- Check construction space access
8091:
8092: sub constructaccess {
8093: my ($url,$setpriv)=@_;
8094:
8095: # We do not allow editing of previous versions of files
8096: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8097:
8098: # Get username and domain from URL
8099: my ($ownername,$ownerdomain,$ownerhome);
8100:
8101: ($ownerdomain,$ownername) =
8102: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8103:
8104: # The URL does not really point to any authorspace, forget it
8105: unless (($ownername) && ($ownerdomain)) { return ''; }
8106:
8107: # Now we need to see if the user has access to the authorspace of
8108: # $ownername at $ownerdomain
8109:
8110: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8111: # Real author for this?
8112: $ownerhome = $env{'user.home'};
8113: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8114: return ($ownername,$ownerdomain,$ownerhome);
8115: }
8116: } else {
8117: # Co-author for this?
8118: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8119: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8120: $ownerhome = &homeserver($ownername,$ownerdomain);
8121: return ($ownername,$ownerdomain,$ownerhome);
8122: }
8123: if ($env{'request.course.id'}) {
8124: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8125: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8126: if (&allowed('mdc',$env{'request.course.id'})) {
8127: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8128: return ($ownername,$ownerdomain,$ownerhome);
8129: }
8130: }
8131: }
8132: }
8133:
8134: # We don't have any access right now. If we are not possibly going to do anything about this,
8135: # we might as well leave
8136: unless ($setpriv) { return ''; }
8137:
8138: # Backdoor access?
8139: my $allowed=&allowed('eco',$ownerdomain);
8140: # Nope
8141: unless ($allowed) { return ''; }
8142: # Looks like we may have access, but could be locked by the owner of the construction space
8143: if ($allowed eq 'U') {
8144: my %blocked=&get('environment',['domcoord.author'],
8145: $ownerdomain,$ownername);
8146: # Is blocked by owner
8147: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8148: }
8149: if (($allowed eq 'F') || ($allowed eq 'U')) {
8150: # Grant temporary access
8151: my $then=$env{'user.login.time'};
8152: my $update=$env{'user.update.time'};
8153: if (!$update) { $update = $then; }
8154: my $refresh=$env{'user.refresh.time'};
8155: if (!$refresh) { $refresh = $update; }
8156: my $now = time;
8157: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8158: $now,'ca','constructaccess');
8159: $ownerhome = &homeserver($ownername,$ownerdomain);
8160: return($ownername,$ownerdomain,$ownerhome);
8161: }
8162: # No business here
8163: return '';
8164: }
8165:
8166: # ----------------------------------------------------------- Content Blocking
8167:
8168: {
8169: # Caches for faster Course Contents display where content blocking
8170: # is in operation (i.e., interval param set) for timed quiz.
8171: #
8172: # User for whom data are being temporarily cached.
8173: my $cacheduser='';
8174: # Cached blockers for this user (a hash of blocking items).
8175: my %cachedblockers=();
8176: # When the data were last cached.
8177: my $cachedlast='';
8178:
8179: sub load_all_blockers {
8180: my ($uname,$udom,$blocks)=@_;
8181: if (($uname ne '') && ($udom ne '')) {
8182: if (($cacheduser eq $uname.':'.$udom) &&
8183: (abs($cachedlast-time)<5)) {
8184: return;
8185: }
8186: }
8187: $cachedlast=time;
8188: $cacheduser=$uname.':'.$udom;
8189: %cachedblockers = &get_commblock_resources($blocks);
8190: }
8191:
8192: sub get_comm_blocks {
8193: my ($cdom,$cnum) = @_;
8194: if ($cdom eq '' || $cnum eq '') {
8195: return unless ($env{'request.course.id'});
8196: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8197: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8198: }
8199: my %commblocks;
8200: my $hashid=$cdom.'_'.$cnum;
8201: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8202: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8203: %commblocks = %{$blocksref};
8204: } else {
8205: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8206: my $cachetime = 600;
8207: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8208: }
8209: return %commblocks;
8210: }
8211:
8212: sub get_commblock_resources {
8213: my ($blocks) = @_;
8214: my %blockers = ();
8215: return %blockers unless ($env{'request.course.id'});
8216: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8217: my %commblocks;
8218: if (ref($blocks) eq 'HASH') {
8219: %commblocks = %{$blocks};
8220: } else {
8221: %commblocks = &get_comm_blocks();
8222: }
8223: return %blockers unless (keys(%commblocks) > 0);
8224: my $navmap = Apache::lonnavmaps::navmap->new();
8225: return %blockers unless (ref($navmap));
8226: my $now = time;
8227: foreach my $block (keys(%commblocks)) {
8228: if ($block =~ /^(\d+)____(\d+)$/) {
8229: my ($start,$end) = ($1,$2);
8230: if ($start <= $now && $end >= $now) {
8231: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8232: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8233: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8234: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8235: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8236: }
8237: }
8238: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8239: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8240: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8241: }
8242: }
8243: }
8244: }
8245: }
8246: } elsif ($block =~ /^firstaccess____(.+)$/) {
8247: my $item = $1;
8248: my @to_test;
8249: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8250: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8251: my @interval;
8252: my $type = 'map';
8253: if ($item eq 'course') {
8254: $type = 'course';
8255: @interval=&EXT("resource.0.interval");
8256: } else {
8257: if ($item =~ /___\d+___/) {
8258: $type = 'resource';
8259: @interval=&EXT("resource.0.interval",$item);
8260: if (ref($navmap)) {
8261: my $res = $navmap->getBySymb($item);
8262: push(@to_test,$res);
8263: }
8264: } else {
8265: my $mapsymb = &symbread($item,1);
8266: if ($mapsymb) {
8267: if (ref($navmap)) {
8268: my $mapres = $navmap->getBySymb($mapsymb);
8269: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8270: foreach my $res (@to_test) {
8271: my $symb = $res->symb();
8272: next if ($symb eq $mapsymb);
8273: if ($symb ne '') {
8274: @interval=&EXT("resource.0.interval",$symb);
8275: if ($interval[1] eq 'map') {
8276: last;
8277: }
8278: }
8279: }
8280: }
8281: }
8282: }
8283: }
8284: if ($interval[0] =~ /^(\d+)/) {
8285: my $timelimit = $1;
8286: my $first_access;
8287: if ($type eq 'resource') {
8288: $first_access=&get_first_access($interval[1],$item);
8289: } elsif ($type eq 'map') {
8290: $first_access=&get_first_access($interval[1],undef,$item);
8291: } else {
8292: $first_access=&get_first_access($interval[1]);
8293: }
8294: if ($first_access) {
8295: my $timesup = $first_access+$timelimit;
8296: if ($timesup > $now) {
8297: my $activeblock;
8298: foreach my $res (@to_test) {
8299: if ($res->answerable()) {
8300: $activeblock = 1;
8301: last;
8302: }
8303: }
8304: if ($activeblock) {
8305: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8306: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8307: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8308: }
8309: }
8310: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8311: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8312: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8313: }
8314: }
8315: }
8316: }
8317: }
8318: }
8319: }
8320: }
8321: }
8322: }
8323: return %blockers;
8324: }
8325:
8326: sub has_comm_blocking {
8327: my ($priv,$symb,$uri,$blocks) = @_;
8328: my @blockers;
8329: return unless ($env{'request.course.id'});
8330: return unless ($priv eq 'bre');
8331: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8332: return if ($env{'request.state'} eq 'construct');
8333: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8334: return unless (keys(%cachedblockers) > 0);
8335: my (%possibles,@symbs);
8336: if (!$symb) {
8337: $symb = &symbread($uri,1,1,1,\%possibles);
8338: }
8339: if ($symb) {
8340: @symbs = ($symb);
8341: } elsif (keys(%possibles)) {
8342: @symbs = keys(%possibles);
8343: }
8344: my $noblock;
8345: foreach my $symb (@symbs) {
8346: last if ($noblock);
8347: my ($map,$resid,$resurl)=&decode_symb($symb);
8348: foreach my $block (keys(%cachedblockers)) {
8349: if ($block =~ /^firstaccess____(.+)$/) {
8350: my $item = $1;
8351: if (($item eq $map) || ($item eq $symb)) {
8352: $noblock = 1;
8353: last;
8354: }
8355: }
8356: if (ref($cachedblockers{$block}) eq 'HASH') {
8357: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8358: if ($cachedblockers{$block}{'resources'}{$symb}) {
8359: unless (grep(/^\Q$block\E$/,@blockers)) {
8360: push(@blockers,$block);
8361: }
8362: }
8363: }
8364: }
8365: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8366: if ($cachedblockers{$block}{'maps'}{$map}) {
8367: unless (grep(/^\Q$block\E$/,@blockers)) {
8368: push(@blockers,$block);
8369: }
8370: }
8371: }
8372: }
8373: }
8374: return if ($noblock);
8375: return @blockers;
8376: }
8377: }
8378:
8379: # -------------------------------- Deversion and split uri into path an filename
8380:
8381: #
8382: # Removes the version from a URI and
8383: # splits it in to its filename and path to the filename.
8384: # Seems like File::Basename could have done this more clearly.
8385: # Parameters:
8386: # $uri - input URI
8387: # Returns:
8388: # Two element list consisting of
8389: # $pathname - the URI up to and excluding the trailing /
8390: # $filename - The part of the URI following the last /
8391: # NOTE:
8392: # Another realization of this is simply:
8393: # use File::Basename;
8394: # ...
8395: # $uri = shift;
8396: # $filename = basename($uri);
8397: # $path = dirname($uri);
8398: # return ($filename, $path);
8399: #
8400: # The implementation below is probably faster however.
8401: #
8402: sub split_uri_for_cond {
8403: my $uri=&deversion(&declutter(shift));
8404: my @uriparts=split(/\//,$uri);
8405: my $filename=pop(@uriparts);
8406: my $pathname=join('/',@uriparts);
8407: return ($pathname,$filename);
8408: }
8409: # --------------------------------------------------- Is a resource on the map?
8410:
8411: sub is_on_map {
8412: my ($pathname,$filename) = &split_uri_for_cond(shift);
8413: #Trying to find the conditional for the file
8414: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8415: /\&\Q$filename\E\:([\d\|]+)\&/);
8416: if ($match) {
8417: return (1,$1);
8418: } else {
8419: return (0,0);
8420: }
8421: }
8422:
8423: # --------------------------------------------------------- Get symb from alias
8424:
8425: sub get_symb_from_alias {
8426: my $symb=shift;
8427: my ($map,$resid,$url)=&decode_symb($symb);
8428: # Already is a symb
8429: if ($url) { return $symb; }
8430: # Must be an alias
8431: my $aliassymb='';
8432: my %bighash;
8433: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8434: &GDBM_READER(),0640)) {
8435: my $rid=$bighash{'mapalias_'.$symb};
8436: if ($rid) {
8437: my ($mapid,$resid)=split(/\./,$rid);
8438: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8439: $resid,$bighash{'src_'.$rid});
8440: }
8441: untie %bighash;
8442: }
8443: return $aliassymb;
8444: }
8445:
8446: # ----------------------------------------------------------------- Define Role
8447:
8448: sub definerole {
8449: if (allowed('mcr','/')) {
8450: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8451: foreach my $role (split(':',$sysrole)) {
8452: my ($crole,$cqual)=split(/\&/,$role);
8453: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8454: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8455: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8456: return "refused:s:$crole&$cqual";
8457: }
8458: }
8459: }
8460: foreach my $role (split(':',$domrole)) {
8461: my ($crole,$cqual)=split(/\&/,$role);
8462: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8463: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8464: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8465: return "refused:d:$crole&$cqual";
8466: }
8467: }
8468: }
8469: foreach my $role (split(':',$courole)) {
8470: my ($crole,$cqual)=split(/\&/,$role);
8471: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8472: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8473: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8474: return "refused:c:$crole&$cqual";
8475: }
8476: }
8477: }
8478: my $uhome;
8479: if (($uname ne '') && ($udom ne '')) {
8480: $uhome = &homeserver($uname,$udom);
8481: return $uhome if ($uhome eq 'no_host');
8482: } else {
8483: $uname = $env{'user.name'};
8484: $udom = $env{'user.domain'};
8485: $uhome = $env{'user.home'};
8486: }
8487: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8488: "$udom:$uname:rolesdef_$rolename=".
8489: escape($sysrole.'_'.$domrole.'_'.$courole);
8490: return reply($command,$uhome);
8491: } else {
8492: return 'refused';
8493: }
8494: }
8495:
8496: # ---------------- Make a metadata query against the network of library servers
8497:
8498: sub metadata_query {
8499: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8500: my %rhash;
8501: my %libserv = &all_library();
8502: my @server_list = (defined($server_array) ? @$server_array
8503: : keys(%libserv) );
8504: for my $server (@server_list) {
8505: my $domains = '';
8506: if (ref($domains_hash) eq 'HASH') {
8507: $domains = $domains_hash->{$server};
8508: }
8509: unless ($custom or $customshow) {
8510: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8511: $rhash{$server}=$reply;
8512: }
8513: else {
8514: my $reply=&reply("querysend:".&escape($query).':'.
8515: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8516: $server);
8517: $rhash{$server}=$reply;
8518: }
8519: }
8520: return \%rhash;
8521: }
8522:
8523: # ----------------------------------------- Send log queries and wait for reply
8524:
8525: sub log_query {
8526: my ($uname,$udom,$query,%filters)=@_;
8527: my $uhome=&homeserver($uname,$udom);
8528: if ($uhome eq 'no_host') { return 'error: no_host'; }
8529: my $uhost=&hostname($uhome);
8530: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8531: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8532: $uhome);
8533: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8534: return get_query_reply($queryid);
8535: }
8536:
8537: # -------------------------- Update MySQL table for portfolio file
8538:
8539: sub update_portfolio_table {
8540: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8541: if ($group ne '') {
8542: $file_name =~s /^\Q$group\E//;
8543: }
8544: my $homeserver = &homeserver($uname,$udom);
8545: my $queryid=
8546: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8547: ':'.&escape($file_name).':'.$action,$homeserver);
8548: my $reply = &get_query_reply($queryid);
8549: return $reply;
8550: }
8551:
8552: # -------------------------- Update MySQL allusers table
8553:
8554: sub update_allusers_table {
8555: my ($uname,$udom,$names) = @_;
8556: my $homeserver = &homeserver($uname,$udom);
8557: my $queryid=
8558: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8559: 'lastname='.&escape($names->{'lastname'}).'%%'.
8560: 'firstname='.&escape($names->{'firstname'}).'%%'.
8561: 'middlename='.&escape($names->{'middlename'}).'%%'.
8562: 'generation='.&escape($names->{'generation'}).'%%'.
8563: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8564: 'id='.&escape($names->{'id'}),$homeserver);
8565: return;
8566: }
8567:
8568: # ------- Request retrieval of institutional classlists for course(s)
8569:
8570: sub fetch_enrollment_query {
8571: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8572: my ($homeserver,$sleep,$loopmax);
8573: my $maxtries = 1;
8574: if ($context eq 'automated') {
8575: $homeserver = $perlvar{'lonHostID'};
8576: $sleep = 2;
8577: $loopmax = 100;
8578: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8579: } else {
8580: $homeserver = &homeserver($cnum,$dom);
8581: }
8582: my $host=&hostname($homeserver);
8583: my $cmd = '';
8584: foreach my $affiliate (keys(%{$affiliatesref})) {
8585: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8586: }
8587: $cmd =~ s/%%$//;
8588: $cmd = &escape($cmd);
8589: my $query = 'fetchenrollment';
8590: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8591: unless ($queryid=~/^\Q$host\E\_/) {
8592: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8593: return 'error: '.$queryid;
8594: }
8595: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8596: my $tries = 1;
8597: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8598: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8599: $tries ++;
8600: }
8601: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8602: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8603: } else {
8604: my @responses = split(/:/,$reply);
8605: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8606: foreach my $line (@responses) {
8607: my ($key,$value) = split(/=/,$line,2);
8608: $$replyref{$key} = $value;
8609: }
8610: } else {
8611: my $pathname = LONCAPA::tempdir();
8612: foreach my $line (@responses) {
8613: my ($key,$value) = split(/=/,$line);
8614: $$replyref{$key} = $value;
8615: if ($value > 0) {
8616: foreach my $item (@{$$affiliatesref{$key}}) {
8617: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8618: my $destname = $pathname.'/'.$filename;
8619: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8620: if ($xml_classlist =~ /^error/) {
8621: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8622: } else {
8623: if ( open(FILE,">",$destname) ) {
8624: print FILE &unescape($xml_classlist);
8625: close(FILE);
8626: } else {
8627: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8628: }
8629: }
8630: }
8631: }
8632: }
8633: }
8634: return 'ok';
8635: }
8636: return 'error';
8637: }
8638:
8639: sub get_query_reply {
8640: my ($queryid,$sleep,$loopmax) = @_;;
8641: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8642: $sleep = 0.2;
8643: }
8644: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8645: $loopmax = 100;
8646: }
8647: my $replyfile=LONCAPA::tempdir().$queryid;
8648: my $reply='';
8649: for (1..$loopmax) {
8650: sleep($sleep);
8651: if (-e $replyfile.'.end') {
8652: if (open(my $fh,"<",$replyfile)) {
8653: $reply = join('',<$fh>);
8654: close($fh);
8655: } else { return 'error: reply_file_error'; }
8656: return &unescape($reply);
8657: }
8658: }
8659: return 'timeout:'.$queryid;
8660: }
8661:
8662: sub courselog_query {
8663: #
8664: # possible filters:
8665: # url: url or symb
8666: # username
8667: # domain
8668: # action: view, submit, grade
8669: # start: timestamp
8670: # end: timestamp
8671: #
8672: my (%filters)=@_;
8673: unless ($env{'request.course.id'}) { return 'no_course'; }
8674: if ($filters{'url'}) {
8675: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8676: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8677: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8678: }
8679: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8680: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8681: return &log_query($cname,$cdom,'courselog',%filters);
8682: }
8683:
8684: sub userlog_query {
8685: #
8686: # possible filters:
8687: # action: log check role
8688: # start: timestamp
8689: # end: timestamp
8690: #
8691: my ($uname,$udom,%filters)=@_;
8692: return &log_query($uname,$udom,'userlog',%filters);
8693: }
8694:
8695: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8696:
8697: sub auto_run {
8698: my ($cnum,$cdom) = @_;
8699: my $response = 0;
8700: my $settings;
8701: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8702: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8703: $settings = $domconfig{'autoenroll'};
8704: if ($settings->{'run'} eq '1') {
8705: $response = 1;
8706: }
8707: } else {
8708: my $homeserver;
8709: if (&is_course($cdom,$cnum)) {
8710: $homeserver = &homeserver($cnum,$cdom);
8711: } else {
8712: $homeserver = &domain($cdom,'primary');
8713: }
8714: if ($homeserver ne 'no_host') {
8715: $response = &reply('autorun:'.$cdom,$homeserver);
8716: }
8717: }
8718: return $response;
8719: }
8720:
8721: sub auto_get_sections {
8722: my ($cnum,$cdom,$inst_coursecode) = @_;
8723: my $homeserver;
8724: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8725: $homeserver = &homeserver($cnum,$cdom);
8726: }
8727: if (!defined($homeserver)) {
8728: if ($cdom =~ /^$match_domain$/) {
8729: $homeserver = &domain($cdom,'primary');
8730: }
8731: }
8732: my @secs;
8733: if (defined($homeserver)) {
8734: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8735: unless ($response eq 'refused') {
8736: @secs = split(/:/,$response);
8737: }
8738: }
8739: return @secs;
8740: }
8741:
8742: sub auto_new_course {
8743: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8744: my $homeserver = &homeserver($cnum,$cdom);
8745: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8746: return $response;
8747: }
8748:
8749: sub auto_validate_courseID {
8750: my ($cnum,$cdom,$inst_course_id) = @_;
8751: my $homeserver = &homeserver($cnum,$cdom);
8752: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8753: return $response;
8754: }
8755:
8756: sub auto_validate_instcode {
8757: my ($cnum,$cdom,$instcode,$owner) = @_;
8758: my ($homeserver,$response);
8759: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8760: $homeserver = &homeserver($cnum,$cdom);
8761: }
8762: if (!defined($homeserver)) {
8763: if ($cdom =~ /^$match_domain$/) {
8764: $homeserver = &domain($cdom,'primary');
8765: }
8766: }
8767: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8768: &escape($instcode).':'.&escape($owner),$homeserver));
8769: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8770: return ($outcome,$description,$defaultcredits);
8771: }
8772:
8773: sub auto_create_password {
8774: my ($cnum,$cdom,$authparam,$udom) = @_;
8775: my ($homeserver,$response);
8776: my $create_passwd = 0;
8777: my $authchk = '';
8778: if ($udom =~ /^$match_domain$/) {
8779: $homeserver = &domain($udom,'primary');
8780: }
8781: if ($homeserver eq '') {
8782: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8783: $homeserver = &homeserver($cnum,$cdom);
8784: }
8785: }
8786: if ($homeserver eq '') {
8787: $authchk = 'nodomain';
8788: } else {
8789: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8790: if ($response eq 'refused') {
8791: $authchk = 'refused';
8792: } else {
8793: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8794: }
8795: }
8796: return ($authparam,$create_passwd,$authchk);
8797: }
8798:
8799: sub auto_photo_permission {
8800: my ($cnum,$cdom,$students) = @_;
8801: my $homeserver = &homeserver($cnum,$cdom);
8802: my ($outcome,$perm_reqd,$conditions) =
8803: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8804: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8805: return (undef,undef);
8806: }
8807: return ($outcome,$perm_reqd,$conditions);
8808: }
8809:
8810: sub auto_checkphotos {
8811: my ($uname,$udom,$pid) = @_;
8812: my $homeserver = &homeserver($uname,$udom);
8813: my ($result,$resulttype);
8814: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8815: &escape($uname).':'.&escape($pid),
8816: $homeserver));
8817: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8818: return (undef,undef);
8819: }
8820: if ($outcome) {
8821: ($result,$resulttype) = split(/:/,$outcome);
8822: }
8823: return ($result,$resulttype);
8824: }
8825:
8826: sub auto_photochoice {
8827: my ($cnum,$cdom) = @_;
8828: my $homeserver = &homeserver($cnum,$cdom);
8829: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8830: &escape($cdom),
8831: $homeserver)));
8832: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8833: return (undef,undef);
8834: }
8835: return ($update,$comment);
8836: }
8837:
8838: sub auto_photoupdate {
8839: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8840: my $homeserver = &homeserver($cnum,$dom);
8841: my $host=&hostname($homeserver);
8842: my $cmd = '';
8843: my $maxtries = 1;
8844: foreach my $affiliate (keys(%{$affiliatesref})) {
8845: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8846: }
8847: $cmd =~ s/%%$//;
8848: $cmd = &escape($cmd);
8849: my $query = 'institutionalphotos';
8850: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8851: unless ($queryid=~/^\Q$host\E\_/) {
8852: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8853: return 'error: '.$queryid;
8854: }
8855: my $reply = &get_query_reply($queryid);
8856: my $tries = 1;
8857: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8858: $reply = &get_query_reply($queryid);
8859: $tries ++;
8860: }
8861: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8862: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8863: } else {
8864: my @responses = split(/:/,$reply);
8865: my $outcome = shift(@responses);
8866: foreach my $item (@responses) {
8867: my ($key,$value) = split(/=/,$item);
8868: $$photo{$key} = $value;
8869: }
8870: return $outcome;
8871: }
8872: return 'error';
8873: }
8874:
8875: sub auto_instcode_format {
8876: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8877: $cat_order) = @_;
8878: my $courses = '';
8879: my @homeservers;
8880: if ($caller eq 'global') {
8881: my %servers = &get_servers($codedom,'library');
8882: foreach my $tryserver (keys(%servers)) {
8883: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8884: push(@homeservers,$tryserver);
8885: }
8886: }
8887: } elsif ($caller eq 'requests') {
8888: if ($codedom =~ /^$match_domain$/) {
8889: my $chome = &domain($codedom,'primary');
8890: unless ($chome eq 'no_host') {
8891: push(@homeservers,$chome);
8892: }
8893: }
8894: } else {
8895: push(@homeservers,&homeserver($caller,$codedom));
8896: }
8897: foreach my $code (keys(%{$instcodes})) {
8898: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8899: }
8900: chop($courses);
8901: my $ok_response = 0;
8902: my $response;
8903: while (@homeservers > 0 && $ok_response == 0) {
8904: my $server = shift(@homeservers);
8905: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8906: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8907: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8908: split(/:/,$response);
8909: %{$codes} = (%{$codes},&str2hash($codes_str));
8910: push(@{$codetitles},&str2array($codetitles_str));
8911: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8912: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8913: $ok_response = 1;
8914: }
8915: }
8916: if ($ok_response) {
8917: return 'ok';
8918: } else {
8919: return $response;
8920: }
8921: }
8922:
8923: sub auto_instcode_defaults {
8924: my ($domain,$returnhash,$code_order) = @_;
8925: my @homeservers;
8926:
8927: my %servers = &get_servers($domain,'library');
8928: foreach my $tryserver (keys(%servers)) {
8929: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8930: push(@homeservers,$tryserver);
8931: }
8932: }
8933:
8934: my $response;
8935: foreach my $server (@homeservers) {
8936: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8937: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8938:
8939: foreach my $pair (split(/\&/,$response)) {
8940: my ($name,$value)=split(/\=/,$pair);
8941: if ($name eq 'code_order') {
8942: @{$code_order} = split(/\&/,&unescape($value));
8943: } else {
8944: $returnhash->{&unescape($name)}=&unescape($value);
8945: }
8946: }
8947: return 'ok';
8948: }
8949:
8950: return $response;
8951: }
8952:
8953: sub auto_possible_instcodes {
8954: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8955: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8956: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8957: return;
8958: }
8959: my (@homeservers,$uhome);
8960: if (defined(&domain($domain,'primary'))) {
8961: $uhome=&domain($domain,'primary');
8962: push(@homeservers,&domain($domain,'primary'));
8963: } else {
8964: my %servers = &get_servers($domain,'library');
8965: foreach my $tryserver (keys(%servers)) {
8966: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8967: push(@homeservers,$tryserver);
8968: }
8969: }
8970: }
8971: my $response;
8972: foreach my $server (@homeservers) {
8973: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8974: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8975: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8976: split(':',$response);
8977: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8978: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8979: foreach my $item (split('&',$cat_title)) {
8980: my ($name,$value)=split('=',$item);
8981: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8982: }
8983: foreach my $item (split('&',$cat_order)) {
8984: my ($name,$value)=split('=',$item);
8985: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8986: }
8987: return 'ok';
8988: }
8989: return $response;
8990: }
8991:
8992: sub auto_courserequest_checks {
8993: my ($dom) = @_;
8994: my ($homeserver,%validations);
8995: if ($dom =~ /^$match_domain$/) {
8996: $homeserver = &domain($dom,'primary');
8997: }
8998: unless ($homeserver eq 'no_host') {
8999: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9000: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9001: my @items = split(/&/,$response);
9002: foreach my $item (@items) {
9003: my ($key,$value) = split('=',$item);
9004: $validations{&unescape($key)} = &thaw_unescape($value);
9005: }
9006: }
9007: }
9008: return %validations;
9009: }
9010:
9011: sub auto_courserequest_validation {
9012: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9013: my ($homeserver,$response);
9014: if ($dom =~ /^$match_domain$/) {
9015: $homeserver = &domain($dom,'primary');
9016: }
9017: unless ($homeserver eq 'no_host') {
9018: my $customdata;
9019: if (ref($custominfo) eq 'HASH') {
9020: $customdata = &freeze_escape($custominfo);
9021: }
9022: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9023: ':'.&escape($crstype).':'.&escape($inststatuslist).
9024: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9025: $customdata,$homeserver));
9026: }
9027: return $response;
9028: }
9029:
9030: sub auto_validate_class_sec {
9031: my ($cdom,$cnum,$owners,$inst_class) = @_;
9032: my $homeserver = &homeserver($cnum,$cdom);
9033: my $ownerlist;
9034: if (ref($owners) eq 'ARRAY') {
9035: $ownerlist = join(',',@{$owners});
9036: } else {
9037: $ownerlist = $owners;
9038: }
9039: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9040: &escape($ownerlist).':'.$cdom,$homeserver);
9041: return $response;
9042: }
9043:
9044: sub auto_validate_instclasses {
9045: my ($cdom,$cnum,$owners,$classesref) = @_;
9046: my ($homeserver,%validations);
9047: $homeserver = &homeserver($cnum,$cdom);
9048: unless ($homeserver eq 'no_host') {
9049: my $ownerlist;
9050: if (ref($owners) eq 'ARRAY') {
9051: $ownerlist = join(',',@{$owners});
9052: } else {
9053: $ownerlist = $owners;
9054: }
9055: if (ref($classesref) eq 'HASH') {
9056: my $classes = &freeze_escape($classesref);
9057: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9058: ':'.$cdom.':'.$classes,$homeserver);
9059: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9060: my @items = split(/&/,$response);
9061: foreach my $item (@items) {
9062: my ($key,$value) = split('=',$item);
9063: $validations{&unescape($key)} = &thaw_unescape($value);
9064: }
9065: }
9066: }
9067: }
9068: return %validations;
9069: }
9070:
9071: sub auto_crsreq_update {
9072: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9073: $code,$accessstart,$accessend,$inbound) = @_;
9074: my ($homeserver,%crsreqresponse);
9075: if ($cdom =~ /^$match_domain$/) {
9076: $homeserver = &domain($cdom,'primary');
9077: }
9078: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9079: my $info;
9080: if (ref($inbound) eq 'HASH') {
9081: $info = &freeze_escape($inbound);
9082: }
9083: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9084: ':'.&escape($action).':'.&escape($ownername).':'.
9085: &escape($ownerdomain).':'.&escape($fullname).':'.
9086: &escape($title).':'.&escape($code).':'.
9087: &escape($accessstart).':'.&escape($accessend).':'.$info,
9088: $homeserver);
9089: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9090: my @items = split(/&/,$response);
9091: foreach my $item (@items) {
9092: my ($key,$value) = split('=',$item);
9093: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9094: }
9095: }
9096: }
9097: return \%crsreqresponse;
9098: }
9099:
9100: sub auto_export_grades {
9101: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9102: my ($homeserver,%exportresponse);
9103: if ($cdom =~ /^$match_domain$/) {
9104: $homeserver = &domain($cdom,'primary');
9105: }
9106: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9107: my $info;
9108: if (ref($inforef) eq 'HASH') {
9109: $info = &freeze_escape($inforef);
9110: }
9111: if (ref($gradesref) eq 'HASH') {
9112: my $grades = &freeze_escape($gradesref);
9113: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9114: $info.':'.$grades,$homeserver);
9115: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9116: my @items = split(/&/,$response);
9117: foreach my $item (@items) {
9118: my ($key,$value) = split('=',$item);
9119: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9120: }
9121: }
9122: }
9123: }
9124: return \%exportresponse;
9125: }
9126:
9127: sub check_instcode_cloning {
9128: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9129: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9130: return;
9131: }
9132: my $canclone;
9133: if (@{$code_order} > 0) {
9134: my $instcoderegexp ='^';
9135: my @clonecodes = split(/\&/,$cloner);
9136: foreach my $item (@{$code_order}) {
9137: if (grep(/^\Q$item\E=/,@clonecodes)) {
9138: foreach my $pair (@clonecodes) {
9139: my ($key,$val) = split(/\=/,$pair,2);
9140: $val = &unescape($val);
9141: if ($key eq $item) {
9142: $instcoderegexp .= '('.$val.')';
9143: last;
9144: }
9145: }
9146: } else {
9147: $instcoderegexp .= $codedefaults->{$item};
9148: }
9149: }
9150: $instcoderegexp .= '$';
9151: my (@from,@to);
9152: eval {
9153: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9154: (@to) = ($clonetocode =~ /$instcoderegexp/);
9155: };
9156: if ((@from > 0) && (@to > 0)) {
9157: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9158: if (!@diffs) {
9159: $canclone = 1;
9160: }
9161: }
9162: }
9163: return $canclone;
9164: }
9165:
9166: sub default_instcode_cloning {
9167: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9168: my (%codedefaults,@code_order,$canclone);
9169: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9170: %codedefaults = %{$codedefaultsref};
9171: @code_order = @{$codeorderref};
9172: } elsif ($clonedom) {
9173: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9174: }
9175: if (($domdefclone) && (@code_order)) {
9176: my @clonecodes = split(/\+/,$domdefclone);
9177: my $instcoderegexp ='^';
9178: foreach my $item (@code_order) {
9179: if (grep(/^\Q$item\E$/,@clonecodes)) {
9180: $instcoderegexp .= '('.$codedefaults{$item}.')';
9181: } else {
9182: $instcoderegexp .= $codedefaults{$item};
9183: }
9184: }
9185: $instcoderegexp .= '$';
9186: my (@from,@to);
9187: eval {
9188: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9189: (@to) = ($clonetocode =~ /$instcoderegexp/);
9190: };
9191: if ((@from > 0) && (@to > 0)) {
9192: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9193: if (!@diffs) {
9194: $canclone = 1;
9195: }
9196: }
9197: }
9198: return $canclone;
9199: }
9200:
9201: # ------------------------------------------------------- Course Group routines
9202:
9203: sub get_coursegroups {
9204: my ($cdom,$cnum,$group,$namespace) = @_;
9205: return(&dump($namespace,$cdom,$cnum,$group));
9206: }
9207:
9208: sub modify_coursegroup {
9209: my ($cdom,$cnum,$groupsettings) = @_;
9210: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9211: }
9212:
9213: sub toggle_coursegroup_status {
9214: my ($cdom,$cnum,$group,$action) = @_;
9215: my ($from_namespace,$to_namespace);
9216: if ($action eq 'delete') {
9217: $from_namespace = 'coursegroups';
9218: $to_namespace = 'deleted_groups';
9219: } else {
9220: $from_namespace = 'deleted_groups';
9221: $to_namespace = 'coursegroups';
9222: }
9223: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9224: if (my $tmp = &error(%curr_group)) {
9225: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9226: return ('read error',$tmp);
9227: } else {
9228: my %savedsettings = %curr_group;
9229: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9230: my $deloutcome;
9231: if ($result eq 'ok') {
9232: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9233: } else {
9234: return ('write error',$result);
9235: }
9236: if ($deloutcome eq 'ok') {
9237: return 'ok';
9238: } else {
9239: return ('delete error',$deloutcome);
9240: }
9241: }
9242: }
9243:
9244: sub modify_group_roles {
9245: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9246: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9247: my $role = 'gr/'.&escape($userprivs);
9248: my ($uname,$udom) = split(/:/,$user);
9249: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9250: if ($result eq 'ok') {
9251: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9252: }
9253: return $result;
9254: }
9255:
9256: sub modify_coursegroup_membership {
9257: my ($cdom,$cnum,$membership) = @_;
9258: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9259: return $result;
9260: }
9261:
9262: sub get_active_groups {
9263: my ($udom,$uname,$cdom,$cnum) = @_;
9264: my $now = time;
9265: my %groups = ();
9266: foreach my $key (keys(%env)) {
9267: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9268: my ($start,$end) = split(/\./,$env{$key});
9269: if (($end!=0) && ($end<$now)) { next; }
9270: if (($start!=0) && ($start>$now)) { next; }
9271: if ($1 eq $cdom && $2 eq $cnum) {
9272: $groups{$3} = $env{$key} ;
9273: }
9274: }
9275: }
9276: return %groups;
9277: }
9278:
9279: sub get_group_membership {
9280: my ($cdom,$cnum,$group) = @_;
9281: return(&dump('groupmembership',$cdom,$cnum,$group));
9282: }
9283:
9284: sub get_users_groups {
9285: my ($udom,$uname,$courseid) = @_;
9286: my @usersgroups;
9287: my $cachetime=1800;
9288:
9289: my $hashid="$udom:$uname:$courseid";
9290: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9291: if (defined($cached)) {
9292: @usersgroups = split(/:/,$grouplist);
9293: } else {
9294: $grouplist = '';
9295: my $courseurl = &courseid_to_courseurl($courseid);
9296: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9297: my $access_end = $env{'course.'.$courseid.
9298: '.default_enrollment_end_date'};
9299: my $now = time;
9300: foreach my $key (keys(%roleshash)) {
9301: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9302: my $group = $1;
9303: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9304: my $start = $2;
9305: my $end = $1;
9306: if ($start == -1) { next; } # deleted from group
9307: if (($start!=0) && ($start>$now)) { next; }
9308: if (($end!=0) && ($end<$now)) {
9309: if ($access_end && $access_end < $now) {
9310: if ($access_end - $end < 86400) {
9311: push(@usersgroups,$group);
9312: }
9313: }
9314: next;
9315: }
9316: push(@usersgroups,$group);
9317: }
9318: }
9319: }
9320: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9321: $grouplist = join(':',@usersgroups);
9322: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9323: }
9324: return @usersgroups;
9325: }
9326:
9327: sub devalidate_getgroups_cache {
9328: my ($udom,$uname,$cdom,$cnum)=@_;
9329: my $courseid = $cdom.'_'.$cnum;
9330:
9331: my $hashid="$udom:$uname:$courseid";
9332: &devalidate_cache_new('getgroups',$hashid);
9333: }
9334:
9335: # ------------------------------------------------------------------ Plain Text
9336:
9337: sub plaintext {
9338: my ($short,$type,$cid,$forcedefault) = @_;
9339: if ($short =~ m{^cr/}) {
9340: return (split('/',$short))[-1];
9341: }
9342: if (!defined($cid)) {
9343: $cid = $env{'request.course.id'};
9344: }
9345: my %rolenames = (
9346: Course => 'std',
9347: Community => 'alt1',
9348: Placement => 'std',
9349: );
9350: if ($cid ne '') {
9351: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9352: unless ($forcedefault) {
9353: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9354: &Apache::lonlocal::mt_escape(\$roletext);
9355: return &Apache::lonlocal::mt($roletext);
9356: }
9357: }
9358: }
9359: if ((defined($type)) && (defined($rolenames{$type})) &&
9360: (defined($rolenames{$type})) &&
9361: (defined($prp{$short}{$rolenames{$type}}))) {
9362: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9363: } elsif ($cid ne '') {
9364: my $crstype = $env{'course.'.$cid.'.type'};
9365: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9366: (defined($prp{$short}{$rolenames{$crstype}}))) {
9367: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9368: }
9369: }
9370: return &Apache::lonlocal::mt($prp{$short}{'std'});
9371: }
9372:
9373: # ----------------------------------------------------------------- Assign Role
9374:
9375: sub assignrole {
9376: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9377: $context)=@_;
9378: my $mrole;
9379: if ($role =~ /^cr\//) {
9380: my $cwosec=$url;
9381: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9382: unless (&allowed('ccr',$cwosec)) {
9383: my $refused = 1;
9384: if ($context eq 'requestcourses') {
9385: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9386: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9387: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9388: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9389: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9390: if ($crsenv{'internal.courseowner'} eq
9391: $env{'user.name'}.':'.$env{'user.domain'}) {
9392: $refused = '';
9393: }
9394: }
9395: }
9396: }
9397: }
9398: if ($refused) {
9399: &logthis('Refused custom assignrole: '.
9400: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9401: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9402: return 'refused';
9403: }
9404: }
9405: $mrole='cr';
9406: } elsif ($role =~ /^gr\//) {
9407: my $cwogrp=$url;
9408: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9409: unless (&allowed('mdg',$cwogrp)) {
9410: &logthis('Refused group assignrole: '.
9411: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9412: $env{'user.name'}.' at '.$env{'user.domain'});
9413: return 'refused';
9414: }
9415: $mrole='gr';
9416: } else {
9417: my $cwosec=$url;
9418: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9419: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9420: my $refused;
9421: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9422: if (!(&allowed('c'.$role,$url))) {
9423: $refused = 1;
9424: }
9425: } else {
9426: $refused = 1;
9427: }
9428: if ($refused) {
9429: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9430: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9431: my %crsenv;
9432: if ($role eq 'cc' || $role eq 'co') {
9433: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9434: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9435: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9436: if ($crsenv{'internal.courseowner'} eq
9437: $env{'user.name'}.':'.$env{'user.domain'}) {
9438: $refused = '';
9439: }
9440: }
9441: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9442: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9443: if ($crsenv{'internal.courseowner'} eq
9444: $env{'user.name'}.':'.$env{'user.domain'}) {
9445: $refused = '';
9446: }
9447: }
9448: }
9449: }
9450: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9451: if ($role eq 'st') {
9452: $refused = '';
9453: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9454: $refused = '';
9455: }
9456: } elsif ($context eq 'requestcourses') {
9457: my @possroles = ('st','ta','ep','in','cc','co');
9458: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9459: my $wrongcc;
9460: if ($cnum =~ /^$match_community$/) {
9461: $wrongcc = 1 if ($role eq 'cc');
9462: } else {
9463: $wrongcc = 1 if ($role eq 'co');
9464: }
9465: unless ($wrongcc) {
9466: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9467: if ($crsenv{'internal.courseowner'} eq
9468: $env{'user.name'}.':'.$env{'user.domain'}) {
9469: $refused = '';
9470: }
9471: }
9472: }
9473: } elsif ($context eq 'requestauthor') {
9474: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9475: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9476: if ($env{'environment.requestauthor'} eq 'automatic') {
9477: $refused = '';
9478: } else {
9479: my %domdefaults = &get_domain_defaults($udom);
9480: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9481: my $checkbystatus;
9482: if ($env{'user.adv'}) {
9483: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9484: if ($disposition eq 'automatic') {
9485: $refused = '';
9486: } elsif ($disposition eq '') {
9487: $checkbystatus = 1;
9488: }
9489: } else {
9490: $checkbystatus = 1;
9491: }
9492: if ($checkbystatus) {
9493: if ($env{'environment.inststatus'}) {
9494: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9495: foreach my $type (@inststatuses) {
9496: if (($type ne '') &&
9497: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9498: $refused = '';
9499: }
9500: }
9501: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9502: $refused = '';
9503: }
9504: }
9505: }
9506: }
9507: }
9508: }
9509: if ($refused) {
9510: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9511: ' '.$role.' '.$end.' '.$start.' by '.
9512: $env{'user.name'}.' at '.$env{'user.domain'});
9513: return 'refused';
9514: }
9515: }
9516: } elsif ($role eq 'au') {
9517: if ($url ne '/'.$udom.'/') {
9518: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9519: ' to assign author role for '.$uname.':'.$udom.
9520: ' in domain: '.$url.' refused (wrong domain).');
9521: return 'refused';
9522: }
9523: }
9524: $mrole=$role;
9525: }
9526: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9527: "$udom:$uname:$url".'_'."$mrole=$role";
9528: if ($end) { $command.='_'.$end; }
9529: if ($start) {
9530: if ($end) {
9531: $command.='_'.$start;
9532: } else {
9533: $command.='_0_'.$start;
9534: }
9535: }
9536: my $origstart = $start;
9537: my $origend = $end;
9538: my $delflag;
9539: # actually delete
9540: if ($deleteflag) {
9541: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9542: # modify command to delete the role
9543: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9544: "$udom:$uname:$url".'_'."$mrole";
9545: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9546: # set start and finish to negative values for userrolelog
9547: $start=-1;
9548: $end=-1;
9549: $delflag = 1;
9550: }
9551: }
9552: # send command
9553: my $answer=&reply($command,&homeserver($uname,$udom));
9554: # log new user role if status is ok
9555: if ($answer eq 'ok') {
9556: &userrolelog($role,$uname,$udom,$url,$start,$end);
9557: if (($role eq 'cc') || ($role eq 'in') ||
9558: ($role eq 'ep') || ($role eq 'ad') ||
9559: ($role eq 'ta') || ($role eq 'st') ||
9560: ($role=~/^cr/) || ($role eq 'gr') ||
9561: ($role eq 'co')) {
9562: # for course roles, perform group memberships changes triggered by role change.
9563: unless ($role =~ /^gr/) {
9564: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9565: $origstart,$selfenroll,$context);
9566: }
9567: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9568: $selfenroll,$context);
9569: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9570: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9571: ($role eq 'da')) {
9572: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9573: $context);
9574: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9575: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9576: $context);
9577: }
9578: if ($role eq 'cc') {
9579: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9580: }
9581: }
9582: return $answer;
9583: }
9584:
9585: sub autoupdate_coowners {
9586: my ($url,$end,$start,$uname,$udom) = @_;
9587: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9588: if (($cdom ne '') && ($cnum ne '')) {
9589: my $now = time;
9590: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9591: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9592: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9593: my $instcode = $coursehash{'internal.coursecode'};
9594: if ($instcode ne '') {
9595: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9596: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9597: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9598: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9599: if ($result eq 'valid') {
9600: if ($coursehash{'internal.co-owners'}) {
9601: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9602: push(@newcoowners,$coowner);
9603: }
9604: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9605: push(@newcoowners,$uname.':'.$udom);
9606: }
9607: @newcoowners = sort(@newcoowners);
9608: } else {
9609: push(@newcoowners,$uname.':'.$udom);
9610: }
9611: } else {
9612: if ($coursehash{'internal.co-owners'}) {
9613: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9614: unless ($coowner eq $uname.':'.$udom) {
9615: push(@newcoowners,$coowner);
9616: }
9617: }
9618: unless (@newcoowners > 0) {
9619: $delcoowners = 1;
9620: $coowners = '';
9621: }
9622: }
9623: }
9624: if (@newcoowners || $delcoowners) {
9625: &store_coowners($cdom,$cnum,$coursehash{'home'},
9626: $delcoowners,@newcoowners);
9627: }
9628: }
9629: }
9630: }
9631: }
9632: }
9633: }
9634:
9635: sub store_coowners {
9636: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9637: my $cid = $cdom.'_'.$cnum;
9638: my ($coowners,$delresult,$putresult);
9639: if (@newcoowners) {
9640: $coowners = join(',',@newcoowners);
9641: my %coownershash = (
9642: 'internal.co-owners' => $coowners,
9643: );
9644: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9645: if ($putresult eq 'ok') {
9646: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9647: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9648: }
9649: }
9650: }
9651: if ($delcoowners) {
9652: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9653: if ($delresult eq 'ok') {
9654: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9655: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9656: }
9657: }
9658: }
9659: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9660: my %crsinfo =
9661: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9662: if (ref($crsinfo{$cid}) eq 'HASH') {
9663: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9664: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9665: }
9666: }
9667: }
9668:
9669: # -------------------------------------------------- Modify user authentication
9670: # Overrides without validation
9671:
9672: sub modifyuserauth {
9673: my ($udom,$uname,$umode,$upass)=@_;
9674: my $uhome=&homeserver($uname,$udom);
9675: unless (&allowed('mau',$udom)) { return 'refused'; }
9676: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9677: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9678: ' in domain '.$env{'request.role.domain'});
9679: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9680: &escape($upass),$uhome);
9681: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9682: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9683: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9684: &log($udom,,$uname,$uhome,
9685: 'Authentication changed by '.$env{'user.domain'}.', '.
9686: $env{'user.name'}.', '.$umode.
9687: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9688: unless ($reply eq 'ok') {
9689: &logthis('Authentication mode error: '.$reply);
9690: return 'error: '.$reply;
9691: }
9692: return 'ok';
9693: }
9694:
9695: # --------------------------------------------------------------- Modify a user
9696:
9697: sub modifyuser {
9698: my ($udom, $uname, $uid,
9699: $umode, $upass, $first,
9700: $middle, $last, $gene,
9701: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9702: $udom= &LONCAPA::clean_domain($udom);
9703: $uname=&LONCAPA::clean_username($uname);
9704: my $showcandelete = 'none';
9705: if (ref($candelete) eq 'ARRAY') {
9706: if (@{$candelete} > 0) {
9707: $showcandelete = join(', ',@{$candelete});
9708: }
9709: }
9710: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9711: $umode.', '.$first.', '.$middle.', '.
9712: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9713: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9714: ' desiredhome not specified').
9715: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9716: ' in domain '.$env{'request.role.domain'});
9717: my $uhome=&homeserver($uname,$udom,'true');
9718: my $newuser;
9719: if ($uhome eq 'no_host') {
9720: $newuser = 1;
9721: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
9722: ($umode eq 'lti')) {
9723: return 'error: more information needed to create new user';
9724: }
9725: }
9726: # ----------------------------------------------------------------- Create User
9727: if (($uhome eq 'no_host') &&
9728: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
9729: my $unhome='';
9730: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9731: $unhome = $desiredhome;
9732: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9733: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9734: } else { # load balancing routine for determining $unhome
9735: my $loadm=10000000;
9736: my %servers = &get_servers($udom,'library');
9737: foreach my $tryserver (keys(%servers)) {
9738: my $answer=reply('load',$tryserver);
9739: if (($answer=~/\d+/) && ($answer<$loadm)) {
9740: $loadm=$answer;
9741: $unhome=$tryserver;
9742: }
9743: }
9744: }
9745: if (($unhome eq '') || ($unhome eq 'no_host')) {
9746: return 'error: unable to find a home server for '.$uname.
9747: ' in domain '.$udom;
9748: }
9749: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9750: &escape($upass),$unhome);
9751: unless ($reply eq 'ok') {
9752: return 'error: '.$reply;
9753: }
9754: $uhome=&homeserver($uname,$udom,'true');
9755: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9756: return 'error: unable verify users home machine.';
9757: }
9758: } # End of creation of new user
9759: # ---------------------------------------------------------------------- Add ID
9760: if ($uid) {
9761: $uid=~tr/A-Z/a-z/;
9762: my %uidhash=&idrget($udom,$uname);
9763: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9764: && (!$forceid)) {
9765: unless ($uid eq $uidhash{$uname}) {
9766: return 'error: user id "'.$uid.'" does not match '.
9767: 'current user id "'.$uidhash{$uname}.'".';
9768: }
9769: } else {
9770: &idput($udom,{$uname => $uid},$uhome,'ids');
9771: }
9772: }
9773: # -------------------------------------------------------------- Add names, etc
9774: my @tmp=&get('environment',
9775: ['firstname','middlename','lastname','generation','id',
9776: 'permanentemail','inststatus'],
9777: $udom,$uname);
9778: my (%names,%oldnames);
9779: if ($tmp[0] =~ m/^error:.*/) {
9780: %names=();
9781: } else {
9782: %names = @tmp;
9783: %oldnames = %names;
9784: }
9785: #
9786: # If name, email and/or uid are blank (e.g., because an uploaded file
9787: # of users did not contain them), do not overwrite existing values
9788: # unless field is in $candelete array ref.
9789: #
9790:
9791: my @fields = ('firstname','middlename','lastname','generation',
9792: 'permanentemail','id');
9793: my %newvalues;
9794: if (ref($candelete) eq 'ARRAY') {
9795: foreach my $field (@fields) {
9796: if (grep(/^\Q$field\E$/,@{$candelete})) {
9797: if ($field eq 'firstname') {
9798: $names{$field} = $first;
9799: } elsif ($field eq 'middlename') {
9800: $names{$field} = $middle;
9801: } elsif ($field eq 'lastname') {
9802: $names{$field} = $last;
9803: } elsif ($field eq 'generation') {
9804: $names{$field} = $gene;
9805: } elsif ($field eq 'permanentemail') {
9806: $names{$field} = $email;
9807: } elsif ($field eq 'id') {
9808: $names{$field} = $uid;
9809: }
9810: }
9811: }
9812: }
9813: if ($first) { $names{'firstname'} = $first; }
9814: if (defined($middle)) { $names{'middlename'} = $middle; }
9815: if ($last) { $names{'lastname'} = $last; }
9816: if (defined($gene)) { $names{'generation'} = $gene; }
9817: if ($email) {
9818: $email=~s/[^\w\@\.\-\,]//gs;
9819: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9820: }
9821: if ($uid) { $names{'id'} = $uid; }
9822: if (defined($inststatus)) {
9823: $names{'inststatus'} = '';
9824: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9825: if (ref($usertypes) eq 'HASH') {
9826: my @okstatuses;
9827: foreach my $item (split(/:/,$inststatus)) {
9828: if (defined($usertypes->{$item})) {
9829: push(@okstatuses,$item);
9830: }
9831: }
9832: if (@okstatuses) {
9833: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9834: }
9835: }
9836: }
9837: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9838: $umode.', '.$first.', '.$middle.', '.
9839: $last.', '.$gene.', '.$email.', '.$inststatus;
9840: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9841: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9842: } else {
9843: $logmsg .= ' during self creation';
9844: }
9845: my $changed;
9846: if ($newuser) {
9847: $changed = 1;
9848: } else {
9849: foreach my $field (@fields) {
9850: if ($names{$field} ne $oldnames{$field}) {
9851: $changed = 1;
9852: last;
9853: }
9854: }
9855: }
9856: unless ($changed) {
9857: $logmsg = 'No changes in user information needed for: '.$logmsg;
9858: &logthis($logmsg);
9859: return 'ok';
9860: }
9861: my $reply = &put('environment', \%names, $udom,$uname);
9862: if ($reply ne 'ok') {
9863: return 'error: '.$reply;
9864: }
9865: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9866: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9867: }
9868: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9869: &devalidate_cache_new('namescache',$uname.':'.$udom);
9870: $logmsg = 'Success modifying user '.$logmsg;
9871: &logthis($logmsg);
9872: return 'ok';
9873: }
9874:
9875: # -------------------------------------------------------------- Modify student
9876:
9877: sub modifystudent {
9878: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9879: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9880: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9881: if (!$cid) {
9882: unless ($cid=$env{'request.course.id'}) {
9883: return 'not_in_class';
9884: }
9885: }
9886: # --------------------------------------------------------------- Make the user
9887: my $reply=&modifyuser
9888: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9889: $desiredhome,$email,$inststatus);
9890: unless ($reply eq 'ok') { return $reply; }
9891: # This will cause &modify_student_enrollment to get the uid from the
9892: # student's environment
9893: $uid = undef if (!$forceid);
9894: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9895: $gene,$usec,$end,$start,$type,$locktype,
9896: $cid,$selfenroll,$context,$credits,$instsec);
9897: return $reply;
9898: }
9899:
9900: sub modify_student_enrollment {
9901: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9902: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9903: my ($cdom,$cnum,$chome);
9904: if (!$cid) {
9905: unless ($cid=$env{'request.course.id'}) {
9906: return 'not_in_class';
9907: }
9908: $cdom=$env{'course.'.$cid.'.domain'};
9909: $cnum=$env{'course.'.$cid.'.num'};
9910: } else {
9911: ($cdom,$cnum)=split(/_/,$cid);
9912: }
9913: $chome=$env{'course.'.$cid.'.home'};
9914: if (!$chome) {
9915: $chome=&homeserver($cnum,$cdom);
9916: }
9917: if (!$chome) { return 'unknown_course'; }
9918: # Make sure the user exists
9919: my $uhome=&homeserver($uname,$udom);
9920: if (($uhome eq '') || ($uhome eq 'no_host')) {
9921: return 'error: no such user';
9922: }
9923: # Get student data if we were not given enough information
9924: if (!defined($first) || $first eq '' ||
9925: !defined($last) || $last eq '' ||
9926: !defined($uid) || $uid eq '' ||
9927: !defined($middle) || $middle eq '' ||
9928: !defined($gene) || $gene eq '') {
9929: # They did not supply us with enough data to enroll the student, so
9930: # we need to pick up more information.
9931: my %tmp = &get('environment',
9932: ['firstname','middlename','lastname', 'generation','id']
9933: ,$udom,$uname);
9934:
9935: #foreach my $key (keys(%tmp)) {
9936: # &logthis("key $key = ".$tmp{$key});
9937: #}
9938: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9939: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9940: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9941: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9942: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9943: }
9944: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9945: my $user = "$uname:$udom";
9946: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9947: my $reply=cput('classlist',
9948: {$user =>
9949: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9950: $cdom,$cnum);
9951: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9952: &devalidate_getsection_cache($udom,$uname,$cid);
9953: } else {
9954: return 'error: '.$reply;
9955: }
9956: # Add student role to user
9957: my $uurl='/'.$cid;
9958: $uurl=~s/\_/\//g;
9959: if ($usec) {
9960: $uurl.='/'.$usec;
9961: }
9962: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9963: $selfenroll,$context);
9964: if ($result ne 'ok') {
9965: if ($old_entry{$user} ne '') {
9966: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9967: } else {
9968: $reply = &del('classlist',[$user],$cdom,$cnum);
9969: }
9970: }
9971: return $result;
9972: }
9973:
9974: sub format_name {
9975: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9976: my $name;
9977: if ($first ne 'lastname') {
9978: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9979: } else {
9980: if ($lastname=~/\S/) {
9981: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9982: $name=~s/\s+,/,/;
9983: } else {
9984: $name.= $firstname.' '.$middlename.' '.$generation;
9985: }
9986: }
9987: $name=~s/^\s+//;
9988: $name=~s/\s+$//;
9989: $name=~s/\s+/ /g;
9990: return $name;
9991: }
9992:
9993: # ------------------------------------------------- Write to course preferences
9994:
9995: sub writecoursepref {
9996: my ($courseid,%prefs)=@_;
9997: $courseid=~s/^\///;
9998: $courseid=~s/\_/\//g;
9999: my ($cdomain,$cnum)=split(/\//,$courseid);
10000: my $chome=homeserver($cnum,$cdomain);
10001: if (($chome eq '') || ($chome eq 'no_host')) {
10002: return 'error: no such course';
10003: }
10004: my $cstring='';
10005: foreach my $pref (keys(%prefs)) {
10006: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10007: }
10008: $cstring=~s/\&$//;
10009: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10010: }
10011:
10012: # ---------------------------------------------------------- Make/modify course
10013:
10014: sub createcourse {
10015: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10016: $course_owner,$crstype,$cnum,$context,$category)=@_;
10017: $url=&declutter($url);
10018: my $cid='';
10019: if ($context eq 'requestcourses') {
10020: my $can_create = 0;
10021: my ($ownername,$ownerdom) = split(':',$course_owner);
10022: if ($udom eq $ownerdom) {
10023: if (&usertools_access($ownername,$ownerdom,$category,undef,
10024: $context)) {
10025: $can_create = 1;
10026: }
10027: } else {
10028: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10029: $category);
10030: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10031: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10032: if (@curr > 0) {
10033: my @options = qw(approval validate autolimit);
10034: my $optregex = join('|',@options);
10035: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10036: $can_create = 1;
10037: }
10038: }
10039: }
10040: }
10041: if ($can_create) {
10042: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10043: unless (&allowed('ccc',$udom)) {
10044: return 'refused';
10045: }
10046: }
10047: } else {
10048: return 'refused';
10049: }
10050: } elsif (!&allowed('ccc',$udom)) {
10051: return 'refused';
10052: }
10053: # --------------------------------------------------------------- Get Unique ID
10054: my $uname;
10055: if ($cnum =~ /^$match_courseid$/) {
10056: my $chome=&homeserver($cnum,$udom,'true');
10057: if (($chome eq '') || ($chome eq 'no_host')) {
10058: $uname = $cnum;
10059: } else {
10060: $uname = &generate_coursenum($udom,$crstype);
10061: }
10062: } else {
10063: $uname = &generate_coursenum($udom,$crstype);
10064: }
10065: return $uname if ($uname =~ /^error/);
10066: # -------------------------------------------------- Check supplied server name
10067: if (!defined($course_server)) {
10068: if (defined(&domain($udom,'primary'))) {
10069: $course_server = &domain($udom,'primary');
10070: } else {
10071: $course_server = $env{'user.home'};
10072: }
10073: }
10074: my %host_servers =
10075: &Apache::lonnet::get_servers($udom,'library');
10076: unless ($host_servers{$course_server}) {
10077: return 'error: invalid home server for course: '.$course_server;
10078: }
10079: # ------------------------------------------------------------- Make the course
10080: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10081: $course_server);
10082: unless ($reply eq 'ok') { return 'error: '.$reply; }
10083: my $uhome=&homeserver($uname,$udom,'true');
10084: if (($uhome eq '') || ($uhome eq 'no_host')) {
10085: return 'error: no such course';
10086: }
10087: # ----------------------------------------------------------------- Course made
10088: # log existence
10089: my $now = time;
10090: my $newcourse = {
10091: $udom.'_'.$uname => {
10092: description => $description,
10093: inst_code => $inst_code,
10094: owner => $course_owner,
10095: type => $crstype,
10096: creator => $env{'user.name'}.':'.
10097: $env{'user.domain'},
10098: created => $now,
10099: context => $context,
10100: },
10101: };
10102: &courseidput($udom,$newcourse,$uhome,'notime');
10103: # set toplevel url
10104: my $topurl=$url;
10105: unless ($nonstandard) {
10106: # ------------------------------------------ For standard courses, make top url
10107: my $mapurl=&clutter($url);
10108: if ($mapurl eq '/res/') { $mapurl=''; }
10109: $env{'form.initmap'}=(<<ENDINITMAP);
10110: <map>
10111: <resource id="1" type="start"></resource>
10112: <resource id="2" src="$mapurl"></resource>
10113: <resource id="3" type="finish"></resource>
10114: <link index="1" from="1" to="2"></link>
10115: <link index="2" from="2" to="3"></link>
10116: </map>
10117: ENDINITMAP
10118: $topurl=&declutter(
10119: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10120: );
10121: }
10122: # ----------------------------------------------------------- Write preferences
10123: &writecoursepref($udom.'_'.$uname,
10124: ('description' => $description,
10125: 'url' => $topurl,
10126: 'internal.creator' => $env{'user.name'}.':'.
10127: $env{'user.domain'},
10128: 'internal.created' => $now,
10129: 'internal.creationcontext' => $context)
10130: );
10131: return '/'.$udom.'/'.$uname;
10132: }
10133:
10134: # ------------------------------------------------------------------- Create ID
10135: sub generate_coursenum {
10136: my ($udom,$crstype) = @_;
10137: my $domdesc = &domain($udom);
10138: return 'error: invalid domain' if ($domdesc eq '');
10139: my $first;
10140: if ($crstype eq 'Community') {
10141: $first = '0';
10142: } else {
10143: $first = int(1+rand(9));
10144: }
10145: my $uname=$first.
10146: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10147: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10148: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10149: # ----------------------------------------------- Make sure that does not exist
10150: my $uhome=&homeserver($uname,$udom,'true');
10151: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10152: if ($crstype eq 'Community') {
10153: $first = '0';
10154: } else {
10155: $first = int(1+rand(9));
10156: }
10157: $uname=$first.
10158: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10159: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10160: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10161: $uhome=&homeserver($uname,$udom,'true');
10162: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10163: return 'error: unable to generate unique course-ID';
10164: }
10165: }
10166: return $uname;
10167: }
10168:
10169: sub is_course {
10170: my ($cdom, $cnum) = scalar(@_) == 1 ?
10171: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10172:
10173: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10174: my $uhome=&homeserver($cnum,$cdom);
10175: my $iscourse;
10176: if (grep { $_ eq $uhome } current_machine_ids()) {
10177: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10178: } else {
10179: my $hashid = $cdom.':'.$cnum;
10180: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10181: unless (defined($cached)) {
10182: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10183: $cnum,undef,undef,'.');
10184: $iscourse = 0;
10185: if (exists($courses{$cdom.'_'.$cnum})) {
10186: $iscourse = 1;
10187: }
10188: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10189: }
10190: }
10191: return unless ($iscourse);
10192: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10193: }
10194:
10195: sub store_userdata {
10196: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10197: my $result;
10198: if ($datakey ne '') {
10199: if (ref($storehash) eq 'HASH') {
10200: if ($udom eq '' || $uname eq '') {
10201: $udom = $env{'user.domain'};
10202: $uname = $env{'user.name'};
10203: }
10204: my $uhome=&homeserver($uname,$udom);
10205: if (($uhome eq '') || ($uhome eq 'no_host')) {
10206: $result = 'error: no_host';
10207: } else {
10208: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10209: $storehash->{'host'} = $perlvar{'lonHostID'};
10210:
10211: my $namevalue='';
10212: foreach my $key (keys(%{$storehash})) {
10213: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10214: }
10215: $namevalue=~s/\&$//;
10216: unless ($namespace eq 'courserequests') {
10217: $datakey = &escape($datakey);
10218: }
10219: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10220: $namevalue,$uhome);
10221: }
10222: } else {
10223: $result = 'error: data to store was not a hash reference';
10224: }
10225: } else {
10226: $result= 'error: invalid requestkey';
10227: }
10228: return $result;
10229: }
10230:
10231: # ---------------------------------------------------------- Assign Custom Role
10232:
10233: sub assigncustomrole {
10234: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10235: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10236: $end,$start,$deleteflag,$selfenroll,$context);
10237: }
10238:
10239: # ----------------------------------------------------------------- Revoke Role
10240:
10241: sub revokerole {
10242: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10243: my $now=time;
10244: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10245: }
10246:
10247: # ---------------------------------------------------------- Revoke Custom Role
10248:
10249: sub revokecustomrole {
10250: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10251: my $now=time;
10252: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10253: $deleteflag,$selfenroll,$context);
10254: }
10255:
10256: # ------------------------------------------------------------ Disk usage
10257: sub diskusage {
10258: my ($udom,$uname,$directorypath,$getpropath)=@_;
10259: $directorypath =~ s/\/$//;
10260: my $listing=&reply('du2:'.&escape($directorypath).':'
10261: .&escape($getpropath).':'.&escape($uname).':'
10262: .&escape($udom),homeserver($uname,$udom));
10263: if ($listing eq 'unknown_cmd') {
10264: if ($getpropath) {
10265: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10266: }
10267: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10268: }
10269: return $listing;
10270: }
10271:
10272: sub is_locked {
10273: my ($file_name, $domain, $user, $which) = @_;
10274: my @check;
10275: my $is_locked;
10276: push (@check,$file_name);
10277: my %locked = &get('file_permissions',\@check,
10278: $env{'user.domain'},$env{'user.name'});
10279: my ($tmp)=keys(%locked);
10280: if ($tmp=~/^error:/) { undef(%locked); }
10281:
10282: if (ref($locked{$file_name}) eq 'ARRAY') {
10283: $is_locked = 'false';
10284: foreach my $entry (@{$locked{$file_name}}) {
10285: if (ref($entry) eq 'ARRAY') {
10286: $is_locked = 'true';
10287: if (ref($which) eq 'ARRAY') {
10288: push(@{$which},$entry);
10289: } else {
10290: last;
10291: }
10292: }
10293: }
10294: } else {
10295: $is_locked = 'false';
10296: }
10297: return $is_locked;
10298: }
10299:
10300: sub declutter_portfile {
10301: my ($file) = @_;
10302: $file =~ s{^(/portfolio/|portfolio/)}{/};
10303: return $file;
10304: }
10305:
10306: # ------------------------------------------------------------- Mark as Read Only
10307:
10308: sub mark_as_readonly {
10309: my ($domain,$user,$files,$what) = @_;
10310: my %current_permissions = &dump('file_permissions',$domain,$user);
10311: my ($tmp)=keys(%current_permissions);
10312: if ($tmp=~/^error:/) { undef(%current_permissions); }
10313: foreach my $file (@{$files}) {
10314: $file = &declutter_portfile($file);
10315: push(@{$current_permissions{$file}},$what);
10316: }
10317: &put('file_permissions',\%current_permissions,$domain,$user);
10318: return;
10319: }
10320:
10321: # ------------------------------------------------------------Save Selected Files
10322:
10323: sub save_selected_files {
10324: my ($user, $path, @files) = @_;
10325: my $filename = $user."savedfiles";
10326: my @other_files = &files_not_in_path($user, $path);
10327: open (OUT,'>',LONCAPA::tempdir().$filename);
10328: foreach my $file (@files) {
10329: print (OUT $env{'form.currentpath'}.$file."\n");
10330: }
10331: foreach my $file (@other_files) {
10332: print (OUT $file."\n");
10333: }
10334: close (OUT);
10335: return 'ok';
10336: }
10337:
10338: sub clear_selected_files {
10339: my ($user) = @_;
10340: my $filename = $user."savedfiles";
10341: open (OUT,'>',LONCAPA::tempdir().$filename);
10342: print (OUT undef);
10343: close (OUT);
10344: return ("ok");
10345: }
10346:
10347: sub files_in_path {
10348: my ($user, $path) = @_;
10349: my $filename = $user."savedfiles";
10350: my %return_files;
10351: open (IN,'<',LONCAPA::tempdir().$filename);
10352: while (my $line_in = <IN>) {
10353: chomp ($line_in);
10354: my @paths_and_file = split (m!/!, $line_in);
10355: my $file_part = pop (@paths_and_file);
10356: my $path_part = join ('/', @paths_and_file);
10357: $path_part.='/';
10358: my $path_and_file = $path_part.$file_part;
10359: if ($path_part eq $path) {
10360: $return_files{$file_part}= 'selected';
10361: }
10362: }
10363: close (IN);
10364: return (\%return_files);
10365: }
10366:
10367: # called in portfolio select mode, to show files selected NOT in current directory
10368: sub files_not_in_path {
10369: my ($user, $path) = @_;
10370: my $filename = $user."savedfiles";
10371: my @return_files;
10372: my $path_part;
10373: open(IN, '<',LONCAPA::tempdir().$filename);
10374: while (my $line = <IN>) {
10375: #ok, I know it's clunky, but I want it to work
10376: my @paths_and_file = split(m|/|, $line);
10377: my $file_part = pop(@paths_and_file);
10378: chomp($file_part);
10379: my $path_part = join('/', @paths_and_file);
10380: $path_part .= '/';
10381: my $path_and_file = $path_part.$file_part;
10382: if ($path_part ne $path) {
10383: push(@return_files, ($path_and_file));
10384: }
10385: }
10386: close(OUT);
10387: return (@return_files);
10388: }
10389:
10390: #------------------------------Submitted/Handedback Portfolio Files Versioning
10391:
10392: sub portfiles_versioning {
10393: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10394: my $portfolio_root = '/userfiles/portfolio';
10395: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10396: foreach my $file (@{$portfiles}) {
10397: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10398: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10399: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10400: my $getpropath = 1;
10401: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10402: $stu_name,$getpropath);
10403: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10404: my $new_answer =
10405: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10406: if ($new_answer ne 'problem getting file') {
10407: push(@{$versioned_portfiles}, $directory.$new_answer);
10408: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10409: [$symb,$env{'request.course.id'},'graded']);
10410: }
10411: }
10412: }
10413:
10414: sub get_next_version {
10415: my ($answer_name, $answer_ext, $dir_list) = @_;
10416: my $version;
10417: if (ref($dir_list) eq 'ARRAY') {
10418: foreach my $row (@{$dir_list}) {
10419: my ($file) = split(/\&/,$row,2);
10420: my ($file_name,$file_version,$file_ext) =
10421: &file_name_version_ext($file);
10422: if (($file_name eq $answer_name) &&
10423: ($file_ext eq $answer_ext)) {
10424: # gets here if filename and extension match,
10425: # regardless of version
10426: if ($file_version ne '') {
10427: # a versioned file is found so save it for later
10428: if ($file_version > $version) {
10429: $version = $file_version;
10430: }
10431: }
10432: }
10433: }
10434: }
10435: $version ++;
10436: return($version);
10437: }
10438:
10439: sub version_selected_portfile {
10440: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10441: my ($answer_name,$answer_ver,$answer_ext) =
10442: &file_name_version_ext($file_name);
10443: my $new_answer;
10444: $env{'form.copy'} =
10445: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10446: if($env{'form.copy'} eq '-1') {
10447: $new_answer = 'problem getting file';
10448: } else {
10449: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10450: my $copy_result =
10451: &finishuserfileupload($stu_name,$domain,'copy',
10452: '/portfolio'.$directory.$new_answer);
10453: }
10454: undef($env{'form.copy'});
10455: return ($new_answer);
10456: }
10457:
10458: sub file_name_version_ext {
10459: my ($file)=@_;
10460: my @file_parts = split(/\./, $file);
10461: my ($name,$version,$ext);
10462: if (@file_parts > 1) {
10463: $ext=pop(@file_parts);
10464: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10465: $version=pop(@file_parts);
10466: }
10467: $name=join('.',@file_parts);
10468: } else {
10469: $name=join('.',@file_parts);
10470: }
10471: return($name,$version,$ext);
10472: }
10473:
10474: #----------------------------------------------Get portfolio file permissions
10475:
10476: sub get_portfile_permissions {
10477: my ($domain,$user) = @_;
10478: my %current_permissions = &dump('file_permissions',$domain,$user);
10479: my ($tmp)=keys(%current_permissions);
10480: if ($tmp=~/^error:/) { undef(%current_permissions); }
10481: return \%current_permissions;
10482: }
10483:
10484: #---------------------------------------------Get portfolio file access controls
10485:
10486: sub get_access_controls {
10487: my ($current_permissions,$group,$file) = @_;
10488: my %access;
10489: my $real_file = $file;
10490: $file =~ s/\.meta$//;
10491: if (defined($file)) {
10492: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10493: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10494: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10495: }
10496: }
10497: } else {
10498: foreach my $key (keys(%{$current_permissions})) {
10499: if ($key =~ /\0accesscontrol$/) {
10500: if (defined($group)) {
10501: if ($key !~ m-^\Q$group\E/-) {
10502: next;
10503: }
10504: }
10505: my ($fullpath) = split(/\0/,$key);
10506: if (ref($$current_permissions{$key}) eq 'HASH') {
10507: foreach my $control (keys(%{$$current_permissions{$key}})) {
10508: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10509: }
10510: }
10511: }
10512: }
10513: }
10514: return %access;
10515: }
10516:
10517: sub modify_access_controls {
10518: my ($file_name,$changes,$domain,$user)=@_;
10519: my ($outcome,$deloutcome);
10520: my %store_permissions;
10521: my %new_values;
10522: my %new_control;
10523: my %translation;
10524: my @deletions = ();
10525: my $now = time;
10526: if (exists($$changes{'activate'})) {
10527: if (ref($$changes{'activate'}) eq 'HASH') {
10528: my @newitems = sort(keys(%{$$changes{'activate'}}));
10529: my $numnew = scalar(@newitems);
10530: for (my $i=0; $i<$numnew; $i++) {
10531: my $newkey = $newitems[$i];
10532: my $newid = &Apache::loncommon::get_cgi_id();
10533: if ($newkey =~ /^\d+:/) {
10534: $newkey =~ s/^(\d+)/$newid/;
10535: $translation{$1} = $newid;
10536: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10537: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10538: $translation{$1} = $newid;
10539: }
10540: $new_values{$file_name."\0".$newkey} =
10541: $$changes{'activate'}{$newitems[$i]};
10542: $new_control{$newkey} = $now;
10543: }
10544: }
10545: }
10546: my %todelete;
10547: my %changed_items;
10548: foreach my $action ('delete','update') {
10549: if (exists($$changes{$action})) {
10550: if (ref($$changes{$action}) eq 'HASH') {
10551: foreach my $key (keys(%{$$changes{$action}})) {
10552: my ($itemnum) = ($key =~ /^([^:]+):/);
10553: if ($action eq 'delete') {
10554: $todelete{$itemnum} = 1;
10555: } else {
10556: $changed_items{$itemnum} = $key;
10557: }
10558: }
10559: }
10560: }
10561: }
10562: # get lock on access controls for file.
10563: my $lockhash = {
10564: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10565: ':'.$env{'user.domain'},
10566: };
10567: my $tries = 0;
10568: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10569:
10570: while (($gotlock ne 'ok') && $tries < 10) {
10571: $tries ++;
10572: sleep(0.1);
10573: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10574: }
10575: if ($gotlock eq 'ok') {
10576: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10577: my ($tmp)=keys(%curr_permissions);
10578: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10579: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10580: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10581: if (ref($curr_controls) eq 'HASH') {
10582: foreach my $control_item (keys(%{$curr_controls})) {
10583: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10584: if (defined($todelete{$itemnum})) {
10585: push(@deletions,$file_name."\0".$control_item);
10586: } else {
10587: if (defined($changed_items{$itemnum})) {
10588: $new_control{$changed_items{$itemnum}} = $now;
10589: push(@deletions,$file_name."\0".$control_item);
10590: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10591: } else {
10592: $new_control{$control_item} = $$curr_controls{$control_item};
10593: }
10594: }
10595: }
10596: }
10597: }
10598: my ($group);
10599: if (&is_course($domain,$user)) {
10600: ($group,my $file) = split(/\//,$file_name,2);
10601: }
10602: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10603: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10604: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10605: # remove lock
10606: my @del_lock = ($file_name."\0".'locked_access_records');
10607: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10608: my $sqlresult =
10609: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10610: $group);
10611: } else {
10612: $outcome = "error: could not obtain lockfile\n";
10613: }
10614: return ($outcome,$deloutcome,\%new_values,\%translation);
10615: }
10616:
10617: sub make_public_indefinitely {
10618: my (@requrl) = @_;
10619: return &automated_portfile_access('public',\@requrl);
10620: }
10621:
10622: sub automated_portfile_access {
10623: my ($accesstype,$addsref,$delsref,$info) = @_;
10624: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10625: return 'invalid';
10626: }
10627: my %urls;
10628: if (ref($addsref) eq 'ARRAY') {
10629: foreach my $requrl (@{$addsref}) {
10630: if (&is_portfolio_url($requrl)) {
10631: unless (exists($urls{$requrl})) {
10632: $urls{$requrl} = 'add';
10633: }
10634: }
10635: }
10636: }
10637: if (ref($delsref) eq 'ARRAY') {
10638: foreach my $requrl (@{$delsref}) {
10639: if (&is_portfolio_url($requrl)) {
10640: unless (exists($urls{$requrl})) {
10641: $urls{$requrl} = 'delete';
10642: }
10643: }
10644: }
10645: }
10646: unless (keys(%urls)) {
10647: return 'invalid';
10648: }
10649: my $ip;
10650: if ($accesstype eq 'ip') {
10651: if (ref($info) eq 'HASH') {
10652: if ($info->{'ip'} ne '') {
10653: $ip = $info->{'ip'};
10654: }
10655: }
10656: if ($ip eq '') {
10657: return 'invalid';
10658: }
10659: }
10660: my $errors;
10661: my $now = time;
10662: my %current_perms;
10663: foreach my $requrl (sort(keys(%urls))) {
10664: my $action;
10665: if ($urls{$requrl} eq 'add') {
10666: $action = 'activate';
10667: } else {
10668: $action = 'none';
10669: }
10670: my $aclnum = 0;
10671: my (undef,$udom,$unum,$file_name,$group) =
10672: &parse_portfolio_url($requrl);
10673: unless (exists($current_perms{$unum.':'.$udom})) {
10674: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10675: }
10676: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10677: $group,$file_name);
10678: foreach my $key (keys(%{$access_controls{$file_name}})) {
10679: my ($num,$scope,$end,$start) =
10680: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10681: if ($scope eq $accesstype) {
10682: if (($start <= $now) && ($end == 0)) {
10683: if ($accesstype eq 'ip') {
10684: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10685: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10686: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10687: if ($urls{$requrl} eq 'add') {
10688: $action = 'none';
10689: last;
10690: } else {
10691: $action = 'delete';
10692: $aclnum = $num;
10693: last;
10694: }
10695: }
10696: }
10697: }
10698: } elsif ($accesstype eq 'public') {
10699: if ($urls{$requrl} eq 'add') {
10700: $action = 'none';
10701: last;
10702: } else {
10703: $action = 'delete';
10704: $aclnum = $num;
10705: last;
10706: }
10707: }
10708: } elsif ($accesstype eq 'public') {
10709: $action = 'update';
10710: $aclnum = $num;
10711: last;
10712: }
10713: }
10714: }
10715: if ($action eq 'none') {
10716: next;
10717: } else {
10718: my %changes;
10719: my $newend = 0;
10720: my $newstart = $now;
10721: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10722: $changes{$action}{$newkey} = {
10723: type => $accesstype,
10724: time => {
10725: start => $newstart,
10726: end => $newend,
10727: },
10728: };
10729: if ($accesstype eq 'ip') {
10730: $changes{$action}{$newkey}{'ip'} = [$ip];
10731: }
10732: my ($outcome,$deloutcome,$new_values,$translation) =
10733: &modify_access_controls($file_name,\%changes,$udom,$unum);
10734: unless ($outcome eq 'ok') {
10735: $errors .= $outcome.' ';
10736: }
10737: }
10738: }
10739: if ($errors) {
10740: $errors =~ s/\s$//;
10741: return $errors;
10742: } else {
10743: return 'ok';
10744: }
10745: }
10746:
10747: #------------------------------------------------------Get Marked as Read Only
10748:
10749: sub get_marked_as_readonly {
10750: my ($domain,$user,$what,$group) = @_;
10751: my $current_permissions = &get_portfile_permissions($domain,$user);
10752: my @readonly_files;
10753: my $cmp1=$what;
10754: if (ref($what)) { $cmp1=join('',@{$what}) };
10755: while (my ($file_name,$value) = each(%{$current_permissions})) {
10756: if (defined($group)) {
10757: if ($file_name !~ m-^\Q$group\E/-) {
10758: next;
10759: }
10760: }
10761: if (ref($value) eq "ARRAY"){
10762: foreach my $stored_what (@{$value}) {
10763: my $cmp2=$stored_what;
10764: if (ref($stored_what) eq 'ARRAY') {
10765: $cmp2=join('',@{$stored_what});
10766: }
10767: if ($cmp1 eq $cmp2) {
10768: push(@readonly_files, $file_name);
10769: last;
10770: } elsif (!defined($what)) {
10771: push(@readonly_files, $file_name);
10772: last;
10773: }
10774: }
10775: }
10776: }
10777: return @readonly_files;
10778: }
10779: #-----------------------------------------------------------Get Marked as Read Only Hash
10780:
10781: sub get_marked_as_readonly_hash {
10782: my ($current_permissions,$group,$what) = @_;
10783: my %readonly_files;
10784: while (my ($file_name,$value) = each(%{$current_permissions})) {
10785: if (defined($group)) {
10786: if ($file_name !~ m-^\Q$group\E/-) {
10787: next;
10788: }
10789: }
10790: if (ref($value) eq "ARRAY"){
10791: foreach my $stored_what (@{$value}) {
10792: if (ref($stored_what) eq 'ARRAY') {
10793: foreach my $lock_descriptor(@{$stored_what}) {
10794: if ($lock_descriptor eq 'graded') {
10795: $readonly_files{$file_name} = 'graded';
10796: } elsif ($lock_descriptor eq 'handback') {
10797: $readonly_files{$file_name} = 'handback';
10798: } else {
10799: if (!exists($readonly_files{$file_name})) {
10800: $readonly_files{$file_name} = 'locked';
10801: }
10802: }
10803: }
10804: }
10805: }
10806: }
10807: }
10808: return %readonly_files;
10809: }
10810: # ------------------------------------------------------------ Unmark as Read Only
10811:
10812: sub unmark_as_readonly {
10813: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10814: # for portfolio submissions, $what contains [$symb,$crsid]
10815: my ($domain,$user,$what,$file_name,$group) = @_;
10816: $file_name = &declutter_portfile($file_name);
10817: my $symb_crs = $what;
10818: if (ref($what)) { $symb_crs=join('',@$what); }
10819: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10820: my ($tmp)=keys(%current_permissions);
10821: if ($tmp=~/^error:/) { undef(%current_permissions); }
10822: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10823: foreach my $file (@readonly_files) {
10824: my $clean_file = &declutter_portfile($file);
10825: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10826: my $current_locks = $current_permissions{$file};
10827: my @new_locks;
10828: my @del_keys;
10829: if (ref($current_locks) eq "ARRAY"){
10830: foreach my $locker (@{$current_locks}) {
10831: my $compare=$locker;
10832: if (ref($locker) eq 'ARRAY') {
10833: $compare=join('',@{$locker});
10834: if ($compare ne $symb_crs) {
10835: push(@new_locks, $locker);
10836: }
10837: }
10838: }
10839: if (scalar(@new_locks) > 0) {
10840: $current_permissions{$file} = \@new_locks;
10841: } else {
10842: push(@del_keys, $file);
10843: &del('file_permissions',\@del_keys, $domain, $user);
10844: delete($current_permissions{$file});
10845: }
10846: }
10847: }
10848: &put('file_permissions',\%current_permissions,$domain,$user);
10849: return;
10850: }
10851:
10852: # ------------------------------------------------------------ Directory lister
10853:
10854: sub dirlist {
10855: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10856: $uri=~s/^\///;
10857: $uri=~s/\/$//;
10858: my ($udom, $uname);
10859: if ($getuserdir) {
10860: $udom = $userdomain;
10861: $uname = $username;
10862: } else {
10863: (undef,$udom,$uname)=split(/\//,$uri);
10864: if(defined($userdomain)) {
10865: $udom = $userdomain;
10866: }
10867: if(defined($username)) {
10868: $uname = $username;
10869: }
10870: }
10871: my ($dirRoot,$listing,@listing_results);
10872:
10873: $dirRoot = $perlvar{'lonDocRoot'};
10874: if (defined($getpropath)) {
10875: $dirRoot = &propath($udom,$uname);
10876: $dirRoot =~ s/\/$//;
10877: } elsif (defined($getuserdir)) {
10878: my $subdir=$uname.'__';
10879: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10880: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10881: ."/$udom/$subdir/$uname";
10882: } elsif (defined($alternateRoot)) {
10883: $dirRoot = $alternateRoot;
10884: }
10885:
10886: if($udom) {
10887: if($uname) {
10888: my $uhome = &homeserver($uname,$udom);
10889: if ($uhome eq 'no_host') {
10890: return ([],'no_host');
10891: }
10892: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10893: .$getuserdir.':'.&escape($dirRoot)
10894: .':'.&escape($uname).':'.&escape($udom),$uhome);
10895: if ($listing eq 'unknown_cmd') {
10896: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10897: } else {
10898: @listing_results = map { &unescape($_); } split(/:/,$listing);
10899: }
10900: if ($listing eq 'unknown_cmd') {
10901: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10902: @listing_results = split(/:/,$listing);
10903: } else {
10904: @listing_results = map { &unescape($_); } split(/:/,$listing);
10905: }
10906: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10907: ($listing eq 'rejected') || ($listing eq 'refused') ||
10908: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10909: return ([],$listing);
10910: } else {
10911: return (\@listing_results);
10912: }
10913: } elsif(!$alternateRoot) {
10914: my (%allusers,%listerror);
10915: my %servers = &get_servers($udom,'library');
10916: foreach my $tryserver (keys(%servers)) {
10917: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10918: &escape($udom),$tryserver);
10919: if ($listing eq 'unknown_cmd') {
10920: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10921: $udom, $tryserver);
10922: } else {
10923: @listing_results = map { &unescape($_); } split(/:/,$listing);
10924: }
10925: if ($listing eq 'unknown_cmd') {
10926: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10927: $udom, $tryserver);
10928: @listing_results = split(/:/,$listing);
10929: } else {
10930: @listing_results =
10931: map { &unescape($_); } split(/:/,$listing);
10932: }
10933: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10934: ($listing eq 'rejected') || ($listing eq 'refused') ||
10935: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10936: $listerror{$tryserver} = $listing;
10937: } else {
10938: foreach my $line (@listing_results) {
10939: my ($entry) = split(/&/,$line,2);
10940: $allusers{$entry} = 1;
10941: }
10942: }
10943: }
10944: my @alluserslist=();
10945: foreach my $user (sort(keys(%allusers))) {
10946: push(@alluserslist,$user.'&user');
10947: }
10948:
10949: if (!%listerror) {
10950: # no errors
10951: return (\@alluserslist);
10952: } elsif (scalar(keys(%servers)) == 1) {
10953: # one library server, one error
10954: my ($key) = keys(%listerror);
10955: return (\@alluserslist, $listerror{$key});
10956: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10957: # con_lost indicates that we might miss data from at least one
10958: # library server
10959: return (\@alluserslist, 'con_lost');
10960: } else {
10961: # multiple library servers and no con_lost -> data should be
10962: # complete.
10963: return (\@alluserslist);
10964: }
10965:
10966: } else {
10967: return ([],'missing username');
10968: }
10969: } elsif(!defined($getpropath)) {
10970: my $path = $perlvar{'lonDocRoot'}.'/res/';
10971: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10972: return (\@all_domains);
10973: } else {
10974: return ([],'missing domain');
10975: }
10976: }
10977:
10978: # --------------------------------------------- GetFileTimestamp
10979: # This function utilizes dirlist and returns the date stamp for
10980: # when it was last modified. It will also return an error of -1
10981: # if an error occurs
10982:
10983: sub GetFileTimestamp {
10984: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10985: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10986: $studentName = &LONCAPA::clean_username($studentName);
10987: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10988: undef,$getuserdir);
10989: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10990: return -1;
10991: }
10992: if (ref($fileref) eq 'ARRAY') {
10993: my @stats = split('&',$fileref->[0]);
10994: # @stats contains first the filename, then the stat output
10995: return $stats[10]; # so this is 10 instead of 9.
10996: } else {
10997: return -1;
10998: }
10999: }
11000:
11001: sub stat_file {
11002: my ($uri) = @_;
11003: $uri = &clutter_with_no_wrapper($uri);
11004:
11005: my ($udom,$uname,$file);
11006: if ($uri =~ m-^/(uploaded|editupload)/-) {
11007: ($udom,$uname,$file) =
11008: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11009: $file = 'userfiles/'.$file;
11010: }
11011: if ($uri =~ m-^/res/-) {
11012: ($udom,$uname) =
11013: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11014: $file = $uri;
11015: }
11016:
11017: if (!$udom || !$uname || !$file) {
11018: # unable to handle the uri
11019: return ();
11020: }
11021: my $getpropath;
11022: if ($file =~ /^userfiles\//) {
11023: $getpropath = 1;
11024: }
11025: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11026: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11027: return ();
11028: } else {
11029: if (ref($listref) eq 'ARRAY') {
11030: my @stats = split('&',$listref->[0]);
11031: shift(@stats); #filename is first
11032: return @stats;
11033: }
11034: }
11035: return ();
11036: }
11037:
11038: # --------------------------------------------------------- recursedirs
11039: # Recursive function to traverse either a specific user's Authoring Space
11040: # or corresponding Published Resource Space, and populate the hash ref:
11041: # $dirhashref with URLs of all directories, and if $filehashref hash
11042: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11043: # or .rights files in resource space, and .meta, .save, .log, and .bak
11044: # files in Authoring Space.
11045: #
11046: # Inputs:
11047: #
11048: # $is_home - true if current server is home server for user's space
11049: # $context - either: priv, or res respectively for Authoring or Resource Space.
11050: # $docroot - Document root (i.e., /home/httpd/html
11051: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11052: # $relpath - Current path (relative to top level).
11053: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11054: # $filehashref - reference to hash to populate with URLs of files (Optional)
11055: #
11056: # Returns: nothing
11057: #
11058: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11059: #
11060: # Currently used by interface/londocs.pm to create linked select boxes for
11061: # directory and filename to import a Course "Author" resource into a course, and
11062: # also to create linked select boxes for Authoring Space and Directory to choose
11063: # save location for creation of a new "standard" problem from the Course Editor.
11064: #
11065:
11066: sub recursedirs {
11067: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11068: return unless (ref($dirhashref) eq 'HASH');
11069: my $currpath = $docroot.$toppath;
11070: if ($relpath) {
11071: $currpath .= "/$relpath";
11072: }
11073: my $savefile;
11074: if (ref($filehashref)) {
11075: $savefile = 1;
11076: }
11077: if ($is_home) {
11078: if (opendir(my $dirh,$currpath)) {
11079: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11080: next if ($item eq '');
11081: if (-d "$currpath/$item") {
11082: my $newpath;
11083: if ($relpath) {
11084: $newpath = "$relpath/$item";
11085: } else {
11086: $newpath = $item;
11087: }
11088: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11089: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11090: } elsif ($savefile) {
11091: if ($context eq 'priv') {
11092: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11093: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11094: }
11095: } else {
11096: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11097: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11098: }
11099: }
11100: }
11101: }
11102: closedir($dirh);
11103: }
11104: } else {
11105: my ($dirlistref,$listerror) =
11106: &dirlist($toppath.$relpath);
11107: my @dir_lines;
11108: my $dirptr=16384;
11109: if (ref($dirlistref) eq 'ARRAY') {
11110: foreach my $dir_line (sort
11111: {
11112: my ($afile)=split('&',$a,2);
11113: my ($bfile)=split('&',$b,2);
11114: return (lc($afile) cmp lc($bfile));
11115: } (@{$dirlistref})) {
11116: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11117: split(/\&/,$dir_line,16);
11118: $item =~ s/\s+$//;
11119: next if (($item =~ /^\.\.?$/) || ($obs));
11120: if ($dirptr&$testdir) {
11121: my $newpath;
11122: if ($relpath) {
11123: $newpath = "$relpath/$item";
11124: } else {
11125: $relpath = '/';
11126: $newpath = $item;
11127: }
11128: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11129: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11130: } elsif ($savefile) {
11131: if ($context eq 'priv') {
11132: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11133: $filehashref->{$relpath}{$item} = 1;
11134: }
11135: } else {
11136: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11137: $filehashref->{$relpath}{$item} = 1;
11138: }
11139: }
11140: }
11141: }
11142: }
11143: }
11144: return;
11145: }
11146:
11147: # -------------------------------------------------------- Value of a Condition
11148:
11149: # gets the value of a specific preevaluated condition
11150: # stored in the string $env{user.state.<cid>}
11151: # or looks up a condition reference in the bighash and if if hasn't
11152: # already been evaluated recurses into docondval to get the value of
11153: # the condition, then memoizing it to
11154: # $env{user.state.<cid>.<condition>}
11155: sub directcondval {
11156: my $number=shift;
11157: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11158: &Apache::lonuserstate::evalstate();
11159: }
11160: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11161: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11162: } elsif ($number =~ /^_/) {
11163: my $sub_condition;
11164: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11165: &GDBM_READER(),0640)) {
11166: $sub_condition=$bighash{'conditions'.$number};
11167: untie(%bighash);
11168: }
11169: my $value = &docondval($sub_condition);
11170: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11171: return $value;
11172: }
11173: if ($env{'user.state.'.$env{'request.course.id'}}) {
11174: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11175: } else {
11176: return 2;
11177: }
11178: }
11179:
11180: # get the collection of conditions for this resource
11181: sub condval {
11182: my $condidx=shift;
11183: my $allpathcond='';
11184: foreach my $cond (split(/\|/,$condidx)) {
11185: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11186: $allpathcond.=
11187: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11188: }
11189: }
11190: $allpathcond=~s/\|$//;
11191: return &docondval($allpathcond);
11192: }
11193:
11194: #evaluates an expression of conditions
11195: sub docondval {
11196: my ($allpathcond) = @_;
11197: my $result=0;
11198: if ($env{'request.course.id'}
11199: && defined($allpathcond)) {
11200: my $operand='|';
11201: my @stack;
11202: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11203: if ($chunk eq '(') {
11204: push @stack,($operand,$result);
11205: } elsif ($chunk eq ')') {
11206: my $before=pop @stack;
11207: if (pop @stack eq '&') {
11208: $result=$result>$before?$before:$result;
11209: } else {
11210: $result=$result>$before?$result:$before;
11211: }
11212: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11213: $operand=$chunk;
11214: } else {
11215: my $new=directcondval($chunk);
11216: if ($operand eq '&') {
11217: $result=$result>$new?$new:$result;
11218: } else {
11219: $result=$result>$new?$result:$new;
11220: }
11221: }
11222: }
11223: }
11224: return $result;
11225: }
11226:
11227: # ---------------------------------------------------- Devalidate courseresdata
11228:
11229: sub devalidatecourseresdata {
11230: my ($coursenum,$coursedomain)=@_;
11231: my $hashid=$coursenum.':'.$coursedomain;
11232: &devalidate_cache_new('courseres',$hashid);
11233: }
11234:
11235:
11236: # --------------------------------------------------- Course Resourcedata Query
11237: #
11238: # Parameters:
11239: # $coursenum - Number of the course.
11240: # $coursedomain - Domain at which the course was created.
11241: # Returns:
11242: # A hash of the course parameters along (I think) with timestamps
11243: # and version info.
11244:
11245: sub get_courseresdata {
11246: my ($coursenum,$coursedomain)=@_;
11247: my $coursehom=&homeserver($coursenum,$coursedomain);
11248: my $hashid=$coursenum.':'.$coursedomain;
11249: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11250: my %dumpreply;
11251: unless (defined($cached)) {
11252: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11253: $result=\%dumpreply;
11254: my ($tmp) = keys(%dumpreply);
11255: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11256: &do_cache_new('courseres',$hashid,$result,600);
11257: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11258: return $tmp;
11259: } elsif ($tmp =~ /^(error)/) {
11260: $result=undef;
11261: &do_cache_new('courseres',$hashid,$result,600);
11262: }
11263: }
11264: return $result;
11265: }
11266:
11267: sub devalidateuserresdata {
11268: my ($uname,$udom)=@_;
11269: my $hashid="$udom:$uname";
11270: &devalidate_cache_new('userres',$hashid);
11271: }
11272:
11273: sub get_userresdata {
11274: my ($uname,$udom)=@_;
11275: #most student don\'t have any data set, check if there is some data
11276: if (&EXT_cache_status($udom,$uname)) { return undef; }
11277:
11278: my $hashid="$udom:$uname";
11279: my ($result,$cached)=&is_cached_new('userres',$hashid);
11280: if (!defined($cached)) {
11281: my %resourcedata=&dump('resourcedata',$udom,$uname);
11282: $result=\%resourcedata;
11283: &do_cache_new('userres',$hashid,$result,600);
11284: }
11285: my ($tmp)=keys(%$result);
11286: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11287: return $result;
11288: }
11289: #error 2 occurs when the .db doesn't exist
11290: if ($tmp!~/error: 2 /) {
11291: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11292: &logthis("<font color=\"blue\">WARNING:".
11293: " Trying to get resource data for ".
11294: $uname." at ".$udom.": ".
11295: $tmp."</font>");
11296: }
11297: } elsif ($tmp=~/error: 2 /) {
11298: #&EXT_cache_set($udom,$uname);
11299: &do_cache_new('userres',$hashid,undef,600);
11300: undef($tmp); # not really an error so don't send it back
11301: }
11302: return $tmp;
11303: }
11304: #----------------------------------------------- resdata - return resource data
11305: # Purpose:
11306: # Return resource data for either users or for a course.
11307: # Parameters:
11308: # $name - Course/user name.
11309: # $domain - Name of the domain the user/course is registered on.
11310: # $type - Type of thing $name is (must be 'course' or 'user')
11311: # $mapp - decluttered URL of enclosing map
11312: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11313: # $recurseup - Ref to array of map URLs, starting with map containing
11314: # $mapp up through hierarchy of nested maps to top level map.
11315: # $courseid - CourseID (first part of param identifier).
11316: # $modifier - Middle part of param identifier.
11317: # $what - Last part of param identifier.
11318: # @which - Array of names of resources desired.
11319: # Returns:
11320: # The value of the first reasource in @which that is found in the
11321: # resource hash.
11322: # Exceptional Conditions:
11323: # If the $type passed in is not valid (not the string 'course' or
11324: # 'user', an undefined reference is returned.
11325: # If none of the resources are found, an undef is returned
11326: sub resdata {
11327: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11328: $modifier,$what,@which)=@_;
11329: my $result;
11330: if ($type eq 'course') {
11331: $result=&get_courseresdata($name,$domain);
11332: } elsif ($type eq 'user') {
11333: $result=&get_userresdata($name,$domain);
11334: }
11335: if (!ref($result)) { return $result; }
11336: foreach my $item (@which) {
11337: if ($item->[1] eq 'course') {
11338: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11339: unless ($$recursed) {
11340: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11341: $$recursed = 1;
11342: }
11343: foreach my $item (@${recurseup}) {
11344: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11345: last if (defined($result->{$norecursechk}));
11346: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11347: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11348: }
11349: }
11350: }
11351: if (defined($result->{$item->[0]})) {
11352: return [$result->{$item->[0]},$item->[1]];
11353: }
11354: }
11355: return undef;
11356: }
11357:
11358: sub get_domain_lti {
11359: my ($cdom,$context) = @_;
11360: my ($name,%lti);
11361: if ($context eq 'consumer') {
11362: $name = 'ltitools';
11363: } elsif ($context eq 'provider') {
11364: $name = 'lti';
11365: } else {
11366: return %lti;
11367: }
11368: my ($result,$cached)=&is_cached_new($name,$cdom);
11369: if (defined($cached)) {
11370: if (ref($result) eq 'HASH') {
11371: %lti = %{$result};
11372: }
11373: } else {
11374: my %domconfig = &get_dom('configuration',[$name],$cdom);
11375: if (ref($domconfig{$name}) eq 'HASH') {
11376: %lti = %{$domconfig{$name}};
11377: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11378: if (ref($encdomconfig{$name}) eq 'HASH') {
11379: foreach my $id (keys(%lti)) {
11380: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11381: foreach my $item ('key','secret') {
11382: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11383: }
11384: }
11385: }
11386: }
11387: }
11388: my $cachetime = 24*60*60;
11389: &do_cache_new($name,$cdom,\%lti,$cachetime);
11390: }
11391: return %lti;
11392: }
11393:
11394: sub get_numsuppfiles {
11395: my ($cnum,$cdom,$ignorecache)=@_;
11396: my $hashid=$cnum.':'.$cdom;
11397: my ($suppcount,$cached);
11398: unless ($ignorecache) {
11399: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11400: }
11401: unless (defined($cached)) {
11402: my $chome=&homeserver($cnum,$cdom);
11403: unless ($chome eq 'no_host') {
11404: ($suppcount,my $supptools,my $errors) = (0,0,0);
11405: my $suppmap = 'supplemental.sequence';
11406: ($suppcount,$supptools,$errors) =
11407: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11408: $supptools,$errors);
11409: }
11410: &do_cache_new('suppcount',$hashid,$suppcount,600);
11411: }
11412: return $suppcount;
11413: }
11414:
11415: #
11416: # EXT resource caching routines
11417: #
11418:
11419: {
11420: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11421: #
11422: # The course for which we cache
11423: my $cachedmapkey='';
11424: # The cached recursive maps for this course
11425: my %cachedmaps=();
11426: # When this was last done
11427: my $cachedmaptime='';
11428:
11429: sub clear_EXT_cache_status {
11430: &delenv('cache.EXT.');
11431: }
11432:
11433: sub EXT_cache_status {
11434: my ($target_domain,$target_user) = @_;
11435: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11436: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11437: # We know already the user has no data
11438: return 1;
11439: } else {
11440: return 0;
11441: }
11442: }
11443:
11444: sub EXT_cache_set {
11445: my ($target_domain,$target_user) = @_;
11446: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11447: #&appenv({$cachename => time});
11448: }
11449:
11450: # --------------------------------------------------------- Value of a Variable
11451: sub EXT {
11452:
11453: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11454: unless ($varname) { return ''; }
11455: #get real user name/domain, courseid and symb
11456: my $courseid;
11457: my $publicuser;
11458: if ($symbparm) {
11459: $symbparm=&get_symb_from_alias($symbparm);
11460: }
11461: if (!($uname && $udom)) {
11462: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11463: if (!$symbparm) { $symbparm=$cursymb; }
11464: } else {
11465: $courseid=$env{'request.course.id'};
11466: }
11467: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11468: my $rest;
11469: if (defined($therest[0])) {
11470: $rest=join('.',@therest);
11471: } else {
11472: $rest='';
11473: }
11474:
11475: my $qualifierrest=$qualifier;
11476: if ($rest) { $qualifierrest.='.'.$rest; }
11477: my $spacequalifierrest=$space;
11478: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11479: if ($realm eq 'user') {
11480: # --------------------------------------------------------------- user.resource
11481: if ($space eq 'resource') {
11482: if ( (defined($Apache::lonhomework::parsing_a_problem)
11483: || defined($Apache::lonhomework::parsing_a_task))
11484: &&
11485: ($symbparm eq &symbread()) ) {
11486: # if we are in the middle of processing the resource the
11487: # get the value we are planning on committing
11488: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11489: return $Apache::lonhomework::results{$qualifierrest};
11490: } else {
11491: return $Apache::lonhomework::history{$qualifierrest};
11492: }
11493: } else {
11494: my %restored;
11495: if ($publicuser || $env{'request.state'} eq 'construct') {
11496: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11497: } else {
11498: %restored=&restore($symbparm,$courseid,$udom,$uname);
11499: }
11500: return $restored{$qualifierrest};
11501: }
11502: # ----------------------------------------------------------------- user.access
11503: } elsif ($space eq 'access') {
11504: # FIXME - not supporting calls for a specific user
11505: return &allowed($qualifier,$rest);
11506: # ------------------------------------------ user.preferences, user.environment
11507: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11508: if (($uname eq $env{'user.name'}) &&
11509: ($udom eq $env{'user.domain'})) {
11510: return $env{join('.',('environment',$qualifierrest))};
11511: } else {
11512: my %returnhash;
11513: if (!$publicuser) {
11514: %returnhash=&userenvironment($udom,$uname,
11515: $qualifierrest);
11516: }
11517: return $returnhash{$qualifierrest};
11518: }
11519: # ----------------------------------------------------------------- user.course
11520: } elsif ($space eq 'course') {
11521: # FIXME - not supporting calls for a specific user
11522: return $env{join('.',('request.course',$qualifier))};
11523: # ------------------------------------------------------------------- user.role
11524: } elsif ($space eq 'role') {
11525: # FIXME - not supporting calls for a specific user
11526: my ($role,$where)=split(/\./,$env{'request.role'});
11527: if ($qualifier eq 'value') {
11528: return $role;
11529: } elsif ($qualifier eq 'extent') {
11530: return $where;
11531: }
11532: # ----------------------------------------------------------------- user.domain
11533: } elsif ($space eq 'domain') {
11534: return $udom;
11535: # ------------------------------------------------------------------- user.name
11536: } elsif ($space eq 'name') {
11537: return $uname;
11538: # ---------------------------------------------------- Any other user namespace
11539: } else {
11540: my %reply;
11541: if (!$publicuser) {
11542: %reply=&get($space,[$qualifierrest],$udom,$uname);
11543: }
11544: return $reply{$qualifierrest};
11545: }
11546: } elsif ($realm eq 'query') {
11547: # ---------------------------------------------- pull stuff out of query string
11548: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11549: [$spacequalifierrest]);
11550: return $env{'form.'.$spacequalifierrest};
11551: } elsif ($realm eq 'request') {
11552: # ------------------------------------------------------------- request.browser
11553: if ($space eq 'browser') {
11554: return $env{'browser.'.$qualifier};
11555: # ------------------------------------------------------------ request.filename
11556: } else {
11557: return $env{'request.'.$spacequalifierrest};
11558: }
11559: } elsif ($realm eq 'course') {
11560: # ---------------------------------------------------------- course.description
11561: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11562: } elsif ($realm eq 'resource') {
11563:
11564: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11565: if (!$symbparm) { $symbparm=&symbread(); }
11566: }
11567:
11568: if ($qualifier eq '') {
11569: if ($space eq 'title') {
11570: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11571: return &gettitle($symbparm);
11572: }
11573:
11574: if ($space eq 'map') {
11575: my ($map) = &decode_symb($symbparm);
11576: return &symbread($map);
11577: }
11578: if ($space eq 'maptitle') {
11579: my ($map) = &decode_symb($symbparm);
11580: return &gettitle($map);
11581: }
11582: if ($space eq 'filename') {
11583: if ($symbparm) {
11584: return &clutter((&decode_symb($symbparm))[2]);
11585: }
11586: return &hreflocation('',$env{'request.filename'});
11587: }
11588:
11589: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11590: if ($space eq 'visibleparts') {
11591: my $navmap = Apache::lonnavmaps::navmap->new();
11592: my $item;
11593: if (ref($navmap)) {
11594: my $res = $navmap->getBySymb($symbparm);
11595: my $parts = $res->parts();
11596: if (ref($parts) eq 'ARRAY') {
11597: $item = join(',',@{$parts});
11598: }
11599: undef($navmap);
11600: }
11601: return $item;
11602: }
11603: }
11604: }
11605:
11606: my ($section, $group, @groups, @recurseup, $recursed);
11607: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11608: if (($courseid eq '') && ($cid)) {
11609: $courseid = $cid;
11610: }
11611: if (($symbparm && $courseid) &&
11612: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11613:
11614: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11615:
11616: # ----------------------------------------------------- Cascading lookup scheme
11617: my $symbp=$symbparm;
11618: $mapp=&deversion((&decode_symb($symbp))[0]);
11619: my $symbparm=$symbp.'.'.$spacequalifierrest;
11620: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11621: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11622: if (($env{'user.name'} eq $uname) &&
11623: ($env{'user.domain'} eq $udom)) {
11624: $section=$env{'request.course.sec'};
11625: @groups = split(/:/,$env{'request.course.groups'});
11626: @groups=&sort_course_groups($courseid,@groups);
11627: } else {
11628: if (! defined($usection)) {
11629: $section=&getsection($udom,$uname,$courseid);
11630: } else {
11631: $section = $usection;
11632: }
11633: @groups = &get_users_groups($udom,$uname,$courseid);
11634: }
11635:
11636: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11637: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11638: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11639: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11640:
11641: $courselevel=$courseid.'.'.$spacequalifierrest;
11642: my $courselevelr=$courseid.'.'.$symbparm;
11643: $courseleveli=$courseid.'.'.$recurseparm;
11644: $courselevelm=$courseid.'.'.$mapparm;
11645:
11646: # ----------------------------------------------------------- first, check user
11647:
11648: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11649: \@recurseup,$courseid,'.',$spacequalifierrest,
11650: ([$courselevelr,'resource'],
11651: [$courselevelm,'map' ],
11652: [$courseleveli,'map' ],
11653: [$courselevel, 'course' ]));
11654: if (defined($userreply)) { return &get_reply($userreply); }
11655:
11656: # ------------------------------------------------ second, check some of course
11657: my $coursereply;
11658: if (@groups > 0) {
11659: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11660: $recurseparm,$mapparm,$spacequalifierrest,
11661: $mapp,\$recursed,\@recurseup);
11662: if (defined($coursereply)) { return &get_reply($coursereply); }
11663: }
11664:
11665: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11666: $env{'course.'.$courseid.'.domain'},
11667: 'course',$mapp,\$recursed,\@recurseup,
11668: $courseid,'.['.$section.'].',$spacequalifierrest,
11669: ([$seclevelr, 'resource'],
11670: [$seclevelm, 'map' ],
11671: [$secleveli, 'map' ],
11672: [$seclevel, 'course' ],
11673: [$courselevelr,'resource']));
11674: if (defined($coursereply)) { return &get_reply($coursereply); }
11675:
11676: # ------------------------------------------------------ third, check map parms
11677: my %parmhash=();
11678: my $thisparm='';
11679: if (tie(%parmhash,'GDBM_File',
11680: $env{'request.course.fn'}.'_parms.db',
11681: &GDBM_READER(),0640)) {
11682: $thisparm=$parmhash{$symbparm};
11683: untie(%parmhash);
11684: }
11685: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11686: }
11687: # ------------------------------------------ fourth, look in resource metadata
11688:
11689: my $what = $spacequalifierrest;
11690: $what=~s/\./\_/;
11691: my $filename;
11692: if (!$symbparm) { $symbparm=&symbread(); }
11693: if ($symbparm) {
11694: $filename=(&decode_symb($symbparm))[2];
11695: } else {
11696: $filename=$env{'request.filename'};
11697: }
11698: my $toolsymb;
11699: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
11700: $toolsymb = $symbparm;
11701: }
11702: my $metadata=&metadata($filename,$what,$toolsymb);
11703: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11704: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
11705: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11706:
11707: # ----------------------------------------------- fifth, look in rest of course
11708: if ($symbparm && defined($courseid) &&
11709: $courseid eq $env{'request.course.id'}) {
11710: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11711: $env{'course.'.$courseid.'.domain'},
11712: 'course',$mapp,\$recursed,\@recurseup,
11713: $courseid,'.',$spacequalifierrest,
11714: ([$courselevelm,'map' ],
11715: [$courseleveli,'map' ],
11716: [$courselevel, 'course']));
11717: if (defined($coursereply)) { return &get_reply($coursereply); }
11718: }
11719: # ------------------------------------------------------------------ Cascade up
11720: unless ($space eq '0') {
11721: my @parts=split(/_/,$space);
11722: my $id=pop(@parts);
11723: my $part=join('_',@parts);
11724: if ($part eq '') { $part='0'; }
11725: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11726: $symbparm,$udom,$uname,$section,1);
11727: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11728: }
11729: if ($recurse) { return undef; }
11730: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
11731: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11732: # ---------------------------------------------------- Any other user namespace
11733: } elsif ($realm eq 'environment') {
11734: # ----------------------------------------------------------------- environment
11735: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11736: return $env{'environment.'.$spacequalifierrest};
11737: } else {
11738: if ($uname eq 'anonymous' && $udom eq '') {
11739: return '';
11740: }
11741: my %returnhash=&userenvironment($udom,$uname,
11742: $spacequalifierrest);
11743: return $returnhash{$spacequalifierrest};
11744: }
11745: } elsif ($realm eq 'system') {
11746: # ----------------------------------------------------------------- system.time
11747: if ($space eq 'time') {
11748: return time;
11749: }
11750: } elsif ($realm eq 'server') {
11751: # ----------------------------------------------------------------- system.time
11752: if ($space eq 'name') {
11753: return $ENV{'SERVER_NAME'};
11754: }
11755: }
11756: return '';
11757: }
11758:
11759: sub get_reply {
11760: my ($reply_value) = @_;
11761: if (ref($reply_value) eq 'ARRAY') {
11762: if (wantarray) {
11763: return @$reply_value;
11764: }
11765: return $reply_value->[0];
11766: } else {
11767: return $reply_value;
11768: }
11769: }
11770:
11771: sub check_group_parms {
11772: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11773: $recursed,$recurseupref) = @_;
11774: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11775: [$what,'course']);
11776: my $coursereply;
11777: foreach my $group (@{$groups}) {
11778: my @groupitems = ();
11779: foreach my $level (@levels) {
11780: my $item = $courseid.'.['.$group.'].'.$level->[0];
11781: push(@groupitems,[$item,$level->[1]]);
11782: }
11783: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11784: $env{'course.'.$courseid.'.domain'},
11785: 'course',$mapp,$recursed,$recurseupref,
11786: $courseid,'.['.$group.'].',$what,
11787: @groupitems);
11788: last if (defined($coursereply));
11789: }
11790: return $coursereply;
11791: }
11792:
11793: sub get_map_hierarchy {
11794: my ($mapname,$courseid) = @_;
11795: my @recurseup = ();
11796: if ($mapname) {
11797: if (($cachedmapkey eq $courseid) &&
11798: (abs($cachedmaptime-time)<5)) {
11799: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11800: return @{$cachedmaps{$mapname}};
11801: }
11802: }
11803: my $navmap = Apache::lonnavmaps::navmap->new();
11804: if (ref($navmap)) {
11805: @recurseup = $navmap->recurseup_maps($mapname);
11806: undef($navmap);
11807: $cachedmaps{$mapname} = \@recurseup;
11808: $cachedmaptime=time;
11809: $cachedmapkey=$courseid;
11810: }
11811: }
11812: return @recurseup;
11813: }
11814:
11815: }
11816:
11817: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11818: my ($courseid,@groups) = @_;
11819: @groups = sort(@groups);
11820: return @groups;
11821: }
11822:
11823: sub packages_tab_default {
11824: my ($uri,$varname,$toolsymb)=@_;
11825: my (undef,$part,$name)=split(/\./,$varname);
11826:
11827: my (@extension,@specifics,$do_default);
11828: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
11829: my ($pack_type,$pack_part)=split(/_/,$package,2);
11830: if ($pack_type eq 'default') {
11831: $do_default=1;
11832: } elsif ($pack_type eq 'extension') {
11833: push(@extension,[$package,$pack_type,$pack_part]);
11834: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11835: # only look at packages defaults for packages that this id is
11836: push(@specifics,[$package,$pack_type,$pack_part]);
11837: }
11838: }
11839: # first look for a package that matches the requested part id
11840: foreach my $package (@specifics) {
11841: my (undef,$pack_type,$pack_part)=@{$package};
11842: next if ($pack_part ne $part);
11843: if (defined($packagetab{"$pack_type&$name&default"})) {
11844: return $packagetab{"$pack_type&$name&default"};
11845: }
11846: }
11847: # look for any possible matching non extension_ package
11848: foreach my $package (@specifics) {
11849: my (undef,$pack_type,$pack_part)=@{$package};
11850: if (defined($packagetab{"$pack_type&$name&default"})) {
11851: return $packagetab{"$pack_type&$name&default"};
11852: }
11853: if ($pack_type eq 'part') { $pack_part='0'; }
11854: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11855: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11856: }
11857: }
11858: # look for any posible extension_ match
11859: foreach my $package (@extension) {
11860: my ($package,$pack_type)=@{$package};
11861: if (defined($packagetab{"$pack_type&$name&default"})) {
11862: return $packagetab{"$pack_type&$name&default"};
11863: }
11864: if (defined($packagetab{$package."&$name&default"})) {
11865: return $packagetab{$package."&$name&default"};
11866: }
11867: }
11868: # look for a global default setting
11869: if ($do_default && defined($packagetab{"default&$name&default"})) {
11870: return $packagetab{"default&$name&default"};
11871: }
11872: return undef;
11873: }
11874:
11875: sub add_prefix_and_part {
11876: my ($prefix,$part)=@_;
11877: my $keyroot;
11878: if (defined($prefix) && $prefix !~ /^__/) {
11879: # prefix that has a part already
11880: $keyroot=$prefix;
11881: } elsif (defined($prefix)) {
11882: # prefix that is missing a part
11883: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11884: } else {
11885: # no prefix at all
11886: if (defined($part)) { $keyroot='_'.$part; }
11887: }
11888: return $keyroot;
11889: }
11890:
11891: # ---------------------------------------------------------------- Get metadata
11892:
11893: my %metaentry;
11894: my %importedpartids;
11895: my %importedrespids;
11896: sub metadata {
11897: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
11898: $uri=&declutter($uri);
11899: # if it is a non metadata possible uri return quickly
11900: if (($uri eq '') ||
11901: (($uri =~ m|^/*adm/|) &&
11902: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11903: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11904: return undef;
11905: }
11906: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11907: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11908: return undef;
11909: }
11910: my $filename=$uri;
11911: $uri=~s/\.meta$//;
11912: #
11913: # Is the metadata already cached?
11914: # Look at timestamp of caching
11915: # Everything is cached by the main uri, libraries are never directly cached
11916: #
11917: if (!defined($liburi)) {
11918: my ($result,$cached)=&is_cached_new('meta',$uri);
11919: if (defined($cached)) { return $result->{':'.$what}; }
11920: }
11921:
11922: #
11923: # If the uri is for an external tool the file from
11924: # which metadata should be retrieved depends on whether
11925: # the tool had been configured to be gradable (set in the Course
11926: # Editor or Resource Editor).
11927: #
11928: # If a valid symb has been included as the third arg in the call
11929: # to &metadata() that can be used to retrieve the value of
11930: # parameter_0_gradable set for the resource, and included in the
11931: # uploaded map containing the tool. The value is retrieved via
11932: # &EXT(), if a valid symb is available. Otherwise the value of
11933: # gradable in the exttool_$marker.db file for the tool instance
11934: # is retrieved via &get().
11935: #
11936: # When lonuserstate::traceroute() calls lonnet::EXT() for
11937: # hiddenresource and encrypturl (during course initialization)
11938: # the map-level parameter for resource.0.gradable included in the
11939: # uploaded map containing the tool will not yet have been stored
11940: # in the user_course_parms.db file for the user's session, so in
11941: # this case fall back to retrieving gradable status from the
11942: # exttool_$marker.db file.
11943: #
11944: # In order to avoid an infinite loop, &metadata() will return
11945: # before a call to &EXT(), if the uri is for an external tool
11946: # and the $what for which metadata is being requested is
11947: # parameter_0_gradable or 0_gradable.
11948: #
11949:
11950: if ($uri =~ /ext\.tool$/) {
11951: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
11952: return;
11953: } else {
11954: my ($checked,$use_passback);
11955: if ($toolsymb ne '') {
11956: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
11957: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
11958: $checked = 1;
11959: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
11960: $use_passback = 1;
11961: }
11962: }
11963: }
11964: unless ($checked) {
11965: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
11966: $marker=~s/\D//g;
11967: if ($marker) {
11968: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
11969: $use_passback = $toolsettings{'gradable'};
11970: }
11971: }
11972: if ($use_passback) {
11973: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
11974: } else {
11975: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
11976: }
11977: }
11978: }
11979:
11980: {
11981: # Imported parts would go here
11982: my @origfiletagids=();
11983: my $importedparts=0;
11984:
11985: # Imported responseids would go here
11986: my $importedresponses=0;
11987: #
11988: # Is this a recursive call for a library?
11989: #
11990: # if (! exists($metacache{$uri})) {
11991: # $metacache{$uri}={};
11992: # }
11993: my $cachetime = 60*60;
11994: if ($liburi) {
11995: $liburi=&declutter($liburi);
11996: $filename=$liburi;
11997: } else {
11998: &devalidate_cache_new('meta',$uri);
11999: undef(%metaentry);
12000: }
12001: my %metathesekeys=();
12002: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12003: my $metastring;
12004: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12005: my $which = &hreflocation('','/'.($liburi || $uri));
12006: $metastring =
12007: &Apache::lonnet::ssi_body($which,
12008: ('grade_target' => 'meta'));
12009: $cachetime = 1; # only want this cached in the child not long term
12010: } elsif (($uri !~ m -^(editupload)/-) &&
12011: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12012: my $file=&filelocation('',&clutter($filename));
12013: #push(@{$metaentry{$uri.'.file'}},$file);
12014: $metastring=&getfile($file);
12015: }
12016: my $parser=HTML::LCParser->new(\$metastring);
12017: my $token;
12018: undef %metathesekeys;
12019: while ($token=$parser->get_token) {
12020: if ($token->[0] eq 'S') {
12021: if (defined($token->[2]->{'package'})) {
12022: #
12023: # This is a package - get package info
12024: #
12025: my $package=$token->[2]->{'package'};
12026: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12027: if (defined($token->[2]->{'id'})) {
12028: $keyroot.='_'.$token->[2]->{'id'};
12029: }
12030: if ($metaentry{':packages'}) {
12031: $metaentry{':packages'}.=','.$package.$keyroot;
12032: } else {
12033: $metaentry{':packages'}=$package.$keyroot;
12034: }
12035: foreach my $pack_entry (keys(%packagetab)) {
12036: my $part=$keyroot;
12037: $part=~s/^\_//;
12038: if ($pack_entry=~/^\Q$package\E\&/ ||
12039: $pack_entry=~/^\Q$package\E_0\&/) {
12040: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12041: # ignore package.tab specified default values
12042: # here &package_tab_default() will fetch those
12043: if ($subp eq 'default') { next; }
12044: my $value=$packagetab{$pack_entry};
12045: my $unikey;
12046: if ($pack =~ /_0$/) {
12047: $unikey='parameter_0_'.$name;
12048: $part=0;
12049: } else {
12050: $unikey='parameter'.$keyroot.'_'.$name;
12051: }
12052: if ($subp eq 'display') {
12053: $value.=' [Part: '.$part.']';
12054: }
12055: $metaentry{':'.$unikey.'.part'}=$part;
12056: $metathesekeys{$unikey}=1;
12057: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12058: $metaentry{':'.$unikey.'.'.$subp}=$value;
12059: }
12060: if (defined($metaentry{':'.$unikey.'.default'})) {
12061: $metaentry{':'.$unikey}=
12062: $metaentry{':'.$unikey.'.default'};
12063: }
12064: }
12065: }
12066: } else {
12067: #
12068: # This is not a package - some other kind of start tag
12069: #
12070: my $entry=$token->[1];
12071: my $unikey='';
12072:
12073: if ($entry eq 'import') {
12074: #
12075: # Importing a library here
12076: #
12077: my $location=$parser->get_text('/import');
12078: my $dir=$filename;
12079: $dir=~s|[^/]*$||;
12080: $location=&filelocation($dir,$location);
12081:
12082: my $importid=$token->[2]->{'id'};
12083: my $importmode=$token->[2]->{'importmode'};
12084: #
12085: # Check metadata for imported file to
12086: # see if it contained response items
12087: #
12088: my ($origfile,@libfilekeys);
12089: my %currmetaentry = %metaentry;
12090: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12091: $depthcount+1));
12092: if (grep(/^responseorder$/,@libfilekeys)) {
12093: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12094: undef,$depthcount+1);
12095: if ($libresponseorder ne '') {
12096: if ($#origfiletagids<0) {
12097: undef(%importedrespids);
12098: undef(%importedpartids);
12099: }
12100: my @respids = split(/\s*,\s*/,$libresponseorder);
12101: if (@respids) {
12102: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12103: }
12104: if ($importedrespids{$importid} ne '') {
12105: $importedresponses = 1;
12106: # We need to get the original file and the imported file to get the response order correct
12107: # Load and inspect original file
12108: if ($#origfiletagids<0) {
12109: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12110: $origfile=&getfile($origfilelocation);
12111: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12112: }
12113: }
12114: }
12115: }
12116: # Do not overwrite contents of %metaentry hash for resource itself with
12117: # hash populated for imported library file
12118: %metaentry = %currmetaentry;
12119: undef(%currmetaentry);
12120: if ($importmode eq 'part') {
12121: # Import as part(s)
12122: $importedparts=1;
12123: # We need to get the original file and the imported file to get the part order correct
12124: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12125: # Load and inspect original file if we didn't do that already
12126: if ($#origfiletagids<0) {
12127: undef(%importedrespids);
12128: undef(%importedpartids);
12129: if ($origfile eq '') {
12130: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12131: $origfile=&getfile($origfilelocation);
12132: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12133: }
12134: }
12135: my @impfilepartids;
12136: # If <partorder> tag is included in metadata for the imported file
12137: # get the parts in the imported file from that.
12138: if (grep(/^partorder$/,@libfilekeys)) {
12139: %currmetaentry = %metaentry;
12140: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12141: $depthcount+1);
12142: %metaentry = %currmetaentry;
12143: undef(%currmetaentry);
12144: if ($libpartorder ne '') {
12145: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12146: }
12147: } else {
12148: # If no <partorder> tag available, load and inspect imported file
12149: my $impfile=&getfile($location);
12150: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12151: }
12152: if ($#impfilepartids>=0) {
12153: # This problem had parts
12154: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12155: } else {
12156: # Importing by turning a single problem into a problem part
12157: # It gets the import-tags ID as part-ID
12158: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12159: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12160: }
12161: } else {
12162: # Import as problem or as normal import
12163: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12164: unless ($importmode eq 'problem') {
12165: # Normal import
12166: if (defined($token->[2]->{'id'})) {
12167: $unikey.='_'.$token->[2]->{'id'};
12168: }
12169: }
12170: # Check metadata for imported file to
12171: # see if it contained parts
12172: if (grep(/^partorder$/,@libfilekeys)) {
12173: %currmetaentry = %metaentry;
12174: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12175: $depthcount+1);
12176: %metaentry = %currmetaentry;
12177: undef(%currmetaentry);
12178: if ($libpartorder ne '') {
12179: $importedparts = 1;
12180: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12181: }
12182: }
12183: }
12184: if ($depthcount<20) {
12185: my $metadata =
12186: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12187: $depthcount+1);
12188: foreach my $meta (split(',',$metadata)) {
12189: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12190: $metathesekeys{$meta}=1;
12191: }
12192: }
12193: } else {
12194: #
12195: # Not importing, some other kind of non-package, non-library start tag
12196: #
12197: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12198: if (defined($token->[2]->{'id'})) {
12199: $unikey.='_'.$token->[2]->{'id'};
12200: }
12201: if (defined($token->[2]->{'name'})) {
12202: $unikey.='_'.$token->[2]->{'name'};
12203: }
12204: $metathesekeys{$unikey}=1;
12205: foreach my $param (@{$token->[3]}) {
12206: $metaentry{':'.$unikey.'.'.$param} =
12207: $token->[2]->{$param};
12208: }
12209: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12210: my $default=$metaentry{':'.$unikey.'.default'};
12211: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12212: # only ws inside the tag, and not in default, so use default
12213: # as value
12214: $metaentry{':'.$unikey}=$default;
12215: } elsif ( $internaltext =~ /\S/ ) {
12216: # something interesting inside the tag
12217: $metaentry{':'.$unikey}=$internaltext;
12218: } else {
12219: # no interesting values, don't set a default
12220: }
12221: # end of not-a-package not-a-library import
12222: }
12223: # end of not-a-package start tag
12224: }
12225: # the next is the end of "start tag"
12226: }
12227: }
12228: my ($extension) = ($uri =~ /\.(\w+)$/);
12229: $extension = lc($extension);
12230: if ($extension eq 'htm') { $extension='html'; }
12231:
12232: foreach my $key (keys(%packagetab)) {
12233: #no specific packages #how's our extension
12234: if ($key!~/^extension_\Q$extension\E&/) { next; }
12235: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12236: \%metathesekeys);
12237: }
12238:
12239: if (!exists($metaentry{':packages'})
12240: || $packagetab{"import_defaults&extension_$extension"}) {
12241: foreach my $key (keys(%packagetab)) {
12242: #no specific packages well let's get default then
12243: if ($key!~/^default&/) { next; }
12244: &metadata_create_package_def($uri,$key,'default',
12245: \%metathesekeys);
12246: }
12247: }
12248: # are there custom rights to evaluate
12249: if ($metaentry{':copyright'} eq 'custom') {
12250:
12251: #
12252: # Importing a rights file here
12253: #
12254: unless ($depthcount) {
12255: my $location=$metaentry{':customdistributionfile'};
12256: my $dir=$filename;
12257: $dir=~s|[^/]*$||;
12258: $location=&filelocation($dir,$location);
12259: my $rights_metadata =
12260: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12261: $depthcount+1);
12262: foreach my $rights (split(',',$rights_metadata)) {
12263: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12264: $metathesekeys{$rights}=1;
12265: }
12266: }
12267: }
12268: # uniqifiy package listing
12269: my %seen;
12270: my @uniq_packages =
12271: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12272: $metaentry{':packages'} = join(',',@uniq_packages);
12273:
12274: if (($importedresponses) || ($importedparts)) {
12275: if ($importedparts) {
12276: # We had imported parts and need to rebuild partorder
12277: $metaentry{':partorder'}='';
12278: $metathesekeys{'partorder'}=1;
12279: }
12280: if ($importedresponses) {
12281: # We had imported responses and need to rebuil responseorder
12282: $metaentry{':responseorder'}='';
12283: $metathesekeys{'responseorder'}=1;
12284: }
12285: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12286: my $origid = $origfiletagids[$index+1];
12287: if ($origfiletagids[$index] eq 'part') {
12288: # Original part, part of the problem
12289: if ($importedparts) {
12290: $metaentry{':partorder'}.=','.$origid;
12291: }
12292: } elsif ($origfiletagids[$index] eq 'import') {
12293: if ($importedparts) {
12294: # We have imported parts at this position
12295: if ($importedpartids{$origid} ne '') {
12296: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12297: }
12298: }
12299: if ($importedresponses) {
12300: # We have imported responses at this position
12301: if ($importedrespids{$origid} ne '') {
12302: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12303: }
12304: }
12305: } else {
12306: # Original response item, part of the problem
12307: if ($importedresponses) {
12308: $metaentry{':responseorder'}.=','.$origid;
12309: }
12310: }
12311: }
12312: if ($importedparts) {
12313: $metaentry{':partorder'}=~s/^\,//;
12314: }
12315: if ($importedresponses) {
12316: $metaentry{':responseorder'}=~s/^\,//;
12317: }
12318: }
12319: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12320: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12321: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12322: unless ($liburi) {
12323: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12324: }
12325: # this is the end of "was not already recently cached
12326: }
12327: return $metaentry{':'.$what};
12328: }
12329:
12330: sub metadata_create_package_def {
12331: my ($uri,$key,$package,$metathesekeys)=@_;
12332: my ($pack,$name,$subp)=split(/\&/,$key);
12333: if ($subp eq 'default') { next; }
12334:
12335: if (defined($metaentry{':packages'})) {
12336: $metaentry{':packages'}.=','.$package;
12337: } else {
12338: $metaentry{':packages'}=$package;
12339: }
12340: my $value=$packagetab{$key};
12341: my $unikey;
12342: $unikey='parameter_0_'.$name;
12343: $metaentry{':'.$unikey.'.part'}=0;
12344: $$metathesekeys{$unikey}=1;
12345: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12346: $metaentry{':'.$unikey.'.'.$subp}=$value;
12347: }
12348: if (defined($metaentry{':'.$unikey.'.default'})) {
12349: $metaentry{':'.$unikey}=
12350: $metaentry{':'.$unikey.'.default'};
12351: }
12352: }
12353:
12354: sub metadata_generate_part0 {
12355: my ($metadata,$metacache,$uri) = @_;
12356: my %allnames;
12357: foreach my $metakey (keys(%$metadata)) {
12358: if ($metakey=~/^parameter\_(.*)/) {
12359: my $part=$$metacache{':'.$metakey.'.part'};
12360: my $name=$$metacache{':'.$metakey.'.name'};
12361: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12362: $allnames{$name}=$part;
12363: }
12364: }
12365: }
12366: foreach my $name (keys(%allnames)) {
12367: $$metadata{"parameter_0_$name"}=1;
12368: my $key=":parameter_0_$name";
12369: $$metacache{"$key.part"}='0';
12370: $$metacache{"$key.name"}=$name;
12371: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12372: $allnames{$name}.'_'.$name.
12373: '.type'};
12374: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12375: '.display'};
12376: my $expr='[Part: '.$allnames{$name}.']';
12377: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12378: $$metacache{"$key.display"}=$olddis;
12379: }
12380: }
12381:
12382: # ------------------------------------------------------ Devalidate title cache
12383:
12384: sub devalidate_title_cache {
12385: my ($url)=@_;
12386: if (!$env{'request.course.id'}) { return; }
12387: my $symb=&symbread($url);
12388: if (!$symb) { return; }
12389: my $key=$env{'request.course.id'}."\0".$symb;
12390: &devalidate_cache_new('title',$key);
12391: }
12392:
12393: # ------------------------------------------------- Get the title of a course
12394:
12395: sub current_course_title {
12396: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12397: }
12398: # ------------------------------------------------- Get the title of a resource
12399:
12400: sub gettitle {
12401: my $urlsymb=shift;
12402: my $symb=&symbread($urlsymb);
12403: if ($symb) {
12404: my $key=$env{'request.course.id'}."\0".$symb;
12405: my ($result,$cached)=&is_cached_new('title',$key);
12406: if (defined($cached)) {
12407: return $result;
12408: }
12409: my ($map,$resid,$url)=&decode_symb($symb);
12410: my $title='';
12411: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12412: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12413: } else {
12414: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12415: &GDBM_READER(),0640)) {
12416: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12417: $title=$bighash{'title_'.$mapid.'.'.$resid};
12418: untie(%bighash);
12419: }
12420: }
12421: $title=~s/\&colon\;/\:/gs;
12422: if ($title) {
12423: # Remember both $symb and $title for dynamic metadata
12424: $accesshash{$symb.'___crstitle'}=$title;
12425: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12426: # Cache this title and then return it
12427: return &do_cache_new('title',$key,$title,600);
12428: }
12429: $urlsymb=$url;
12430: }
12431: my $title=&metadata($urlsymb,'title');
12432: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12433: return $title;
12434: }
12435:
12436: sub get_slot {
12437: my ($which,$cnum,$cdom)=@_;
12438: if (!$cnum || !$cdom) {
12439: (undef,my $courseid)=&whichuser();
12440: $cdom=$env{'course.'.$courseid.'.domain'};
12441: $cnum=$env{'course.'.$courseid.'.num'};
12442: }
12443: my $key=join("\0",'slots',$cdom,$cnum,$which);
12444: my %slotinfo;
12445: if (exists($remembered{$key})) {
12446: $slotinfo{$which} = $remembered{$key};
12447: } else {
12448: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12449: &Apache::lonhomework::showhash(%slotinfo);
12450: my ($tmp)=keys(%slotinfo);
12451: if ($tmp=~/^error:/) { return (); }
12452: $remembered{$key} = $slotinfo{$which};
12453: }
12454: if (ref($slotinfo{$which}) eq 'HASH') {
12455: return %{$slotinfo{$which}};
12456: }
12457: return $slotinfo{$which};
12458: }
12459:
12460: sub get_reservable_slots {
12461: my ($cnum,$cdom,$uname,$udom) = @_;
12462: my $now = time;
12463: my $reservable_info;
12464: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12465: if (exists($remembered{$key})) {
12466: $reservable_info = $remembered{$key};
12467: } else {
12468: my %resv;
12469: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12470: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12471: $reservable_info = \%resv;
12472: $remembered{$key} = $reservable_info;
12473: }
12474: return $reservable_info;
12475: }
12476:
12477: sub get_course_slots {
12478: my ($cnum,$cdom) = @_;
12479: my $hashid=$cnum.':'.$cdom;
12480: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12481: if (defined($cached)) {
12482: if (ref($result) eq 'HASH') {
12483: return %{$result};
12484: }
12485: } else {
12486: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12487: my ($tmp) = keys(%slots);
12488: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12489: &do_cache_new('allslots',$hashid,\%slots,600);
12490: return %slots;
12491: }
12492: }
12493: return;
12494: }
12495:
12496: sub devalidate_slots_cache {
12497: my ($cnum,$cdom)=@_;
12498: my $hashid=$cnum.':'.$cdom;
12499: &devalidate_cache_new('allslots',$hashid);
12500: }
12501:
12502: sub get_coursechange {
12503: my ($cdom,$cnum) = @_;
12504: if ($cdom eq '' || $cnum eq '') {
12505: return unless ($env{'request.course.id'});
12506: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12507: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12508: }
12509: my $hashid=$cdom.'_'.$cnum;
12510: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12511: if ((defined($cached)) && ($change ne '')) {
12512: return $change;
12513: } else {
12514: my %crshash;
12515: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12516: if ($crshash{'internal.contentchange'} eq '') {
12517: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12518: if ($change eq '') {
12519: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12520: $change = $crshash{'internal.created'};
12521: }
12522: } else {
12523: $change = $crshash{'internal.contentchange'};
12524: }
12525: my $cachetime = 600;
12526: &do_cache_new('crschange',$hashid,$change,$cachetime);
12527: }
12528: return $change;
12529: }
12530:
12531: sub devalidate_coursechange_cache {
12532: my ($cnum,$cdom)=@_;
12533: my $hashid=$cnum.':'.$cdom;
12534: &devalidate_cache_new('crschange',$hashid);
12535: }
12536:
12537: # ------------------------------------------------- Update symbolic store links
12538:
12539: sub symblist {
12540: my ($mapname,%newhash)=@_;
12541: $mapname=&deversion(&declutter($mapname));
12542: my %hash;
12543: if (($env{'request.course.fn'}) && (%newhash)) {
12544: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12545: &GDBM_WRCREAT(),0640)) {
12546: foreach my $url (keys(%newhash)) {
12547: next if ($url eq 'last_known'
12548: && $env{'form.no_update_last_known'});
12549: $hash{declutter($url)}=&encode_symb($mapname,
12550: $newhash{$url}->[1],
12551: $newhash{$url}->[0]);
12552: }
12553: if (untie(%hash)) {
12554: return 'ok';
12555: }
12556: }
12557: }
12558: return 'error';
12559: }
12560:
12561: # --------------------------------------------------------------- Verify a symb
12562:
12563: sub symbverify {
12564: my ($symb,$thisurl,$encstate)=@_;
12565: my $thisfn=$thisurl;
12566: $thisfn=&declutter($thisfn);
12567: # direct jump to resource in page or to a sequence - will construct own symbs
12568: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
12569: # check URL part
12570: my ($map,$resid,$url)=&decode_symb($symb);
12571:
12572: unless ($url eq $thisfn) { return 0; }
12573:
12574: $symb=&symbclean($symb);
12575: $thisurl=&deversion($thisurl);
12576: $thisfn=&deversion($thisfn);
12577:
12578: my %bighash;
12579: my $okay=0;
12580:
12581: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12582: &GDBM_READER(),0640)) {
12583: my $noclutter;
12584: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
12585: $thisurl =~ s/\?.+$//;
12586: if ($map =~ m{^uploaded/.+\.page$}) {
12587: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
12588: $thisurl =~ s{^\Qhttp://https://\E}{https://};
12589: $noclutter = 1;
12590: }
12591: }
12592: my $ids;
12593: if ($noclutter) {
12594: $ids=$bighash{'ids_'.$thisurl};
12595: } else {
12596: $ids=$bighash{'ids_'.&clutter($thisurl)};
12597: }
12598: unless ($ids) {
12599: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
12600: $ids=$bighash{$idkey};
12601: }
12602: if ($ids) {
12603: # ------------------------------------------------------------------- Has ID(s)
12604: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
12605: $symb =~ s/\?.+$//;
12606: }
12607: foreach my $id (split(/\,/,$ids)) {
12608: my ($mapid,$resid)=split(/\./,$id);
12609: if (
12610: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
12611: eq $symb) {
12612: if (ref($encstate)) {
12613: $$encstate = $bighash{'encrypted_'.$id};
12614: }
12615: if (($env{'request.role.adv'}) ||
12616: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
12617: ($thisurl eq '/adm/navmaps')) {
12618: $okay=1;
12619: last;
12620: }
12621: }
12622: }
12623: }
12624: untie(%bighash);
12625: }
12626: return $okay;
12627: }
12628:
12629: # --------------------------------------------------------------- Clean-up symb
12630:
12631: sub symbclean {
12632: my $symb=shift;
12633: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12634: # remove version from map
12635: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
12636:
12637: # remove version from URL
12638: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12639:
12640: # remove wrapper
12641:
12642: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12643: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12644: return $symb;
12645: }
12646:
12647: # ---------------------------------------------- Split symb to find map and url
12648:
12649: sub encode_symb {
12650: my ($map,$resid,$url)=@_;
12651: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12652: }
12653:
12654: sub decode_symb {
12655: my $symb=shift;
12656: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12657: my ($map,$resid,$url)=split(/___/,$symb);
12658: return (&fixversion($map),$resid,&fixversion($url));
12659: }
12660:
12661: sub fixversion {
12662: my $fn=shift;
12663: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12664: my %bighash;
12665: my $uri=&clutter($fn);
12666: my $key=$env{'request.course.id'}.'_'.$uri;
12667: # is this cached?
12668: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12669: if (defined($cached)) { return $result; }
12670: # unfortunately not cached, or expired
12671: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12672: &GDBM_READER(),0640)) {
12673: if ($bighash{'version_'.$uri}) {
12674: my $version=$bighash{'version_'.$uri};
12675: unless (($version eq 'mostrecent') ||
12676: ($version==&getversion($uri))) {
12677: $uri=~s/\.(\w+)$/\.$version\.$1/;
12678: }
12679: }
12680: untie %bighash;
12681: }
12682: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12683: }
12684:
12685: sub deversion {
12686: my $url=shift;
12687: $url=~s/\.\d+\.(\w+)$/\.$1/;
12688: return $url;
12689: }
12690:
12691: # ------------------------------------------------------ Return symb list entry
12692:
12693: sub symbread {
12694: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12695: my $cache_str='request.symbread.cached.'.$thisfn;
12696: if (defined($env{$cache_str})) {
12697: if ($ignorecachednull) {
12698: return $env{$cache_str} unless ($env{$cache_str} eq '');
12699: } else {
12700: return $env{$cache_str};
12701: }
12702: }
12703: # no filename provided? try from environment
12704: unless ($thisfn) {
12705: if ($env{'request.symb'}) {
12706: return $env{$cache_str}=&symbclean($env{'request.symb'});
12707: }
12708: $thisfn=$env{'request.filename'};
12709: }
12710: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12711: # is that filename actually a symb? Verify, clean, and return
12712: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12713: if (&symbverify($thisfn,$1)) {
12714: return $env{$cache_str}=&symbclean($thisfn);
12715: }
12716: }
12717: $thisfn=declutter($thisfn);
12718: my %hash;
12719: my %bighash;
12720: my $syval='';
12721: if (($env{'request.course.fn'}) && ($thisfn)) {
12722: my $targetfn = $thisfn;
12723: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12724: $targetfn = 'adm/wrapper/'.$thisfn;
12725: }
12726: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12727: $targetfn=$1;
12728: }
12729: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12730: &GDBM_READER(),0640)) {
12731: $syval=$hash{$targetfn};
12732: untie(%hash);
12733: }
12734: # ---------------------------------------------------------- There was an entry
12735: if ($syval) {
12736: #unless ($syval=~/\_\d+$/) {
12737: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12738: #&appenv({'request.ambiguous' => $thisfn});
12739: #return $env{$cache_str}='';
12740: #}
12741: #$syval.=$1;
12742: #}
12743: } else {
12744: # ------------------------------------------------------- Was not in symb table
12745: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12746: &GDBM_READER(),0640)) {
12747: # ---------------------------------------------- Get ID(s) for current resource
12748: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12749: unless ($ids) {
12750: $ids=$bighash{'ids_/'.$thisfn};
12751: }
12752: unless ($ids) {
12753: # alias?
12754: $ids=$bighash{'mapalias_'.$thisfn};
12755: }
12756: if ($ids) {
12757: # ------------------------------------------------------------------- Has ID(s)
12758: my @possibilities=split(/\,/,$ids);
12759: if ($#possibilities==0) {
12760: # ----------------------------------------------- There is only one possibility
12761: my ($mapid,$resid)=split(/\./,$ids);
12762: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12763: $resid,$thisfn);
12764: if (ref($possibles) eq 'HASH') {
12765: $possibles->{$syval} = 1;
12766: }
12767: if ($checkforblock) {
12768: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12769: if (@blockers) {
12770: $syval = '';
12771: return;
12772: }
12773: }
12774: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12775: # ------------------------------------------ There is more than one possibility
12776: my $realpossible=0;
12777: foreach my $id (@possibilities) {
12778: my $file=$bighash{'src_'.$id};
12779: my $canaccess;
12780: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12781: $canaccess = 1;
12782: } else {
12783: $canaccess = &allowed('bre',$file);
12784: }
12785: if ($canaccess) {
12786: my ($mapid,$resid)=split(/\./,$id);
12787: if ($bighash{'map_type_'.$mapid} ne 'page') {
12788: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12789: $resid,$thisfn);
12790: if (ref($possibles) eq 'HASH') {
12791: $possibles->{$syval} = 1;
12792: }
12793: if ($checkforblock) {
12794: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12795: unless (@blockers > 0) {
12796: $syval = $poss_syval;
12797: $realpossible++;
12798: }
12799: } else {
12800: $syval = $poss_syval;
12801: $realpossible++;
12802: }
12803: }
12804: }
12805: }
12806: if ($realpossible!=1) { $syval=''; }
12807: } else {
12808: $syval='';
12809: }
12810: }
12811: untie(%bighash);
12812: }
12813: }
12814: if ($syval) {
12815: return $env{$cache_str}=$syval;
12816: }
12817: }
12818: &appenv({'request.ambiguous' => $thisfn});
12819: return $env{$cache_str}='';
12820: }
12821:
12822: # ---------------------------------------------------------- Return random seed
12823:
12824: sub numval {
12825: my $txt=shift;
12826: $txt=~tr/A-J/0-9/;
12827: $txt=~tr/a-j/0-9/;
12828: $txt=~tr/K-T/0-9/;
12829: $txt=~tr/k-t/0-9/;
12830: $txt=~tr/U-Z/0-5/;
12831: $txt=~tr/u-z/0-5/;
12832: $txt=~s/\D//g;
12833: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12834: return int($txt);
12835: }
12836:
12837: sub numval2 {
12838: my $txt=shift;
12839: $txt=~tr/A-J/0-9/;
12840: $txt=~tr/a-j/0-9/;
12841: $txt=~tr/K-T/0-9/;
12842: $txt=~tr/k-t/0-9/;
12843: $txt=~tr/U-Z/0-5/;
12844: $txt=~tr/u-z/0-5/;
12845: $txt=~s/\D//g;
12846: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12847: my $total;
12848: foreach my $val (@txts) { $total+=$val; }
12849: if ($_64bit) { if ($total > 2**32) { return -1; } }
12850: return int($total);
12851: }
12852:
12853: sub numval3 {
12854: use integer;
12855: my $txt=shift;
12856: $txt=~tr/A-J/0-9/;
12857: $txt=~tr/a-j/0-9/;
12858: $txt=~tr/K-T/0-9/;
12859: $txt=~tr/k-t/0-9/;
12860: $txt=~tr/U-Z/0-5/;
12861: $txt=~tr/u-z/0-5/;
12862: $txt=~s/\D//g;
12863: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12864: my $total;
12865: foreach my $val (@txts) { $total+=$val; }
12866: if ($_64bit) { $total=(($total<<32)>>32); }
12867: return $total;
12868: }
12869:
12870: sub digest {
12871: my ($data)=@_;
12872: my $digest=&Digest::MD5::md5($data);
12873: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12874: my ($e,$f);
12875: {
12876: use integer;
12877: $e=($a+$b);
12878: $f=($c+$d);
12879: if ($_64bit) {
12880: $e=(($e<<32)>>32);
12881: $f=(($f<<32)>>32);
12882: }
12883: }
12884: if (wantarray) {
12885: return ($e,$f);
12886: } else {
12887: my $g;
12888: {
12889: use integer;
12890: $g=($e+$f);
12891: if ($_64bit) {
12892: $g=(($g<<32)>>32);
12893: }
12894: }
12895: return $g;
12896: }
12897: }
12898:
12899: sub latest_rnd_algorithm_id {
12900: return '64bit5';
12901: }
12902:
12903: sub get_rand_alg {
12904: my ($courseid)=@_;
12905: if (!$courseid) { $courseid=(&whichuser())[1]; }
12906: if ($courseid) {
12907: return $env{"course.$courseid.rndseed"};
12908: }
12909: return &latest_rnd_algorithm_id();
12910: }
12911:
12912: sub validCODE {
12913: my ($CODE)=@_;
12914: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12915: return 0;
12916: }
12917:
12918: sub getCODE {
12919: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12920: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12921: defined($Apache::lonhomework::parsing_a_task) ) &&
12922: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12923: return $Apache::lonhomework::history{'resource.CODE'};
12924: }
12925: return undef;
12926: }
12927: #
12928: # Determines the random seed for a specific context:
12929: #
12930: # parameters:
12931: # symb - in course context the symb for the seed.
12932: # course_id - The course id of the form domain_coursenum.
12933: # domain - Domain for the user.
12934: # course - Course for the user.
12935: # cenv - environment of the course.
12936: #
12937: # NOTE:
12938: # All parameters are picked out of the environment if missing
12939: # or not defined.
12940: # If a symb cannot be determined the current time is used instead.
12941: #
12942: # For a given well defined symb, courside, domain, username,
12943: # and course environment, the seed is reproducible.
12944: #
12945: sub rndseed {
12946: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12947: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12948: if (!defined($symb)) {
12949: unless ($symb=$wsymb) { return time; }
12950: }
12951: if (!defined $courseid) {
12952: $courseid=$wcourseid;
12953: }
12954: if (!defined $domain) { $domain=$wdomain; }
12955: if (!defined $username) { $username=$wusername }
12956:
12957: my $which;
12958: if (defined($cenv->{'rndseed'})) {
12959: $which = $cenv->{'rndseed'};
12960: } else {
12961: $which =&get_rand_alg($courseid);
12962: }
12963: if (defined(&getCODE())) {
12964:
12965: if ($which eq '64bit5') {
12966: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12967: } elsif ($which eq '64bit4') {
12968: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12969: } else {
12970: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12971: }
12972: } elsif ($which eq '64bit5') {
12973: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12974: } elsif ($which eq '64bit4') {
12975: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12976: } elsif ($which eq '64bit3') {
12977: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12978: } elsif ($which eq '64bit2') {
12979: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12980: } elsif ($which eq '64bit') {
12981: return &rndseed_64bit($symb,$courseid,$domain,$username);
12982: }
12983: return &rndseed_32bit($symb,$courseid,$domain,$username);
12984: }
12985:
12986: sub rndseed_32bit {
12987: my ($symb,$courseid,$domain,$username)=@_;
12988: {
12989: use integer;
12990: my $symbchck=unpack("%32C*",$symb) << 27;
12991: my $symbseed=numval($symb) << 22;
12992: my $namechck=unpack("%32C*",$username) << 17;
12993: my $nameseed=numval($username) << 12;
12994: my $domainseed=unpack("%32C*",$domain) << 7;
12995: my $courseseed=unpack("%32C*",$courseid);
12996: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12997: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12998: #&logthis("rndseed :$num:$symb");
12999: if ($_64bit) { $num=(($num<<32)>>32); }
13000: return $num;
13001: }
13002: }
13003:
13004: sub rndseed_64bit {
13005: my ($symb,$courseid,$domain,$username)=@_;
13006: {
13007: use integer;
13008: my $symbchck=unpack("%32S*",$symb) << 21;
13009: my $symbseed=numval($symb) << 10;
13010: my $namechck=unpack("%32S*",$username);
13011:
13012: my $nameseed=numval($username) << 21;
13013: my $domainseed=unpack("%32S*",$domain) << 10;
13014: my $courseseed=unpack("%32S*",$courseid);
13015:
13016: my $num1=$symbchck+$symbseed+$namechck;
13017: my $num2=$nameseed+$domainseed+$courseseed;
13018: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13019: #&logthis("rndseed :$num:$symb");
13020: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13021: return "$num1,$num2";
13022: }
13023: }
13024:
13025: sub rndseed_64bit2 {
13026: my ($symb,$courseid,$domain,$username)=@_;
13027: {
13028: use integer;
13029: # strings need to be an even # of cahracters long, it it is odd the
13030: # last characters gets thrown away
13031: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13032: my $symbseed=numval($symb) << 10;
13033: my $namechck=unpack("%32S*",$username.' ');
13034:
13035: my $nameseed=numval($username) << 21;
13036: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13037: my $courseseed=unpack("%32S*",$courseid.' ');
13038:
13039: my $num1=$symbchck+$symbseed+$namechck;
13040: my $num2=$nameseed+$domainseed+$courseseed;
13041: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13042: #&logthis("rndseed :$num:$symb");
13043: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13044: return "$num1,$num2";
13045: }
13046: }
13047:
13048: sub rndseed_64bit3 {
13049: my ($symb,$courseid,$domain,$username)=@_;
13050: {
13051: use integer;
13052: # strings need to be an even # of cahracters long, it it is odd the
13053: # last characters gets thrown away
13054: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13055: my $symbseed=numval2($symb) << 10;
13056: my $namechck=unpack("%32S*",$username.' ');
13057:
13058: my $nameseed=numval2($username) << 21;
13059: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13060: my $courseseed=unpack("%32S*",$courseid.' ');
13061:
13062: my $num1=$symbchck+$symbseed+$namechck;
13063: my $num2=$nameseed+$domainseed+$courseseed;
13064: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13065: #&logthis("rndseed :$num1:$num2:$_64bit");
13066: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13067:
13068: return "$num1:$num2";
13069: }
13070: }
13071:
13072: sub rndseed_64bit4 {
13073: my ($symb,$courseid,$domain,$username)=@_;
13074: {
13075: use integer;
13076: # strings need to be an even # of cahracters long, it it is odd the
13077: # last characters gets thrown away
13078: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13079: my $symbseed=numval3($symb) << 10;
13080: my $namechck=unpack("%32S*",$username.' ');
13081:
13082: my $nameseed=numval3($username) << 21;
13083: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13084: my $courseseed=unpack("%32S*",$courseid.' ');
13085:
13086: my $num1=$symbchck+$symbseed+$namechck;
13087: my $num2=$nameseed+$domainseed+$courseseed;
13088: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13089: #&logthis("rndseed :$num1:$num2:$_64bit");
13090: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13091:
13092: return "$num1:$num2";
13093: }
13094: }
13095:
13096: sub rndseed_64bit5 {
13097: my ($symb,$courseid,$domain,$username)=@_;
13098: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13099: return "$num1:$num2";
13100: }
13101:
13102: sub rndseed_CODE_64bit {
13103: my ($symb,$courseid,$domain,$username)=@_;
13104: {
13105: use integer;
13106: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13107: my $symbseed=numval2($symb);
13108: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13109: my $CODEseed=numval(&getCODE());
13110: my $courseseed=unpack("%32S*",$courseid.' ');
13111: my $num1=$symbseed+$CODEchck;
13112: my $num2=$CODEseed+$courseseed+$symbchck;
13113: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13114: #&logthis("rndseed :$num1:$num2:$symb");
13115: if ($_64bit) { $num1=(($num1<<32)>>32); }
13116: if ($_64bit) { $num2=(($num2<<32)>>32); }
13117: return "$num1:$num2";
13118: }
13119: }
13120:
13121: sub rndseed_CODE_64bit4 {
13122: my ($symb,$courseid,$domain,$username)=@_;
13123: {
13124: use integer;
13125: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13126: my $symbseed=numval3($symb);
13127: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13128: my $CODEseed=numval3(&getCODE());
13129: my $courseseed=unpack("%32S*",$courseid.' ');
13130: my $num1=$symbseed+$CODEchck;
13131: my $num2=$CODEseed+$courseseed+$symbchck;
13132: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13133: #&logthis("rndseed :$num1:$num2:$symb");
13134: if ($_64bit) { $num1=(($num1<<32)>>32); }
13135: if ($_64bit) { $num2=(($num2<<32)>>32); }
13136: return "$num1:$num2";
13137: }
13138: }
13139:
13140: sub rndseed_CODE_64bit5 {
13141: my ($symb,$courseid,$domain,$username)=@_;
13142: my $code = &getCODE();
13143: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13144: return "$num1:$num2";
13145: }
13146:
13147: sub setup_random_from_rndseed {
13148: my ($rndseed)=@_;
13149: if ($rndseed =~/([,:])/) {
13150: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13151: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13152: &Math::Random::random_set_seed_from_phrase($rndseed);
13153: } else {
13154: &Math::Random::random_set_seed($num1,$num2);
13155: }
13156: } else {
13157: &Math::Random::random_set_seed_from_phrase($rndseed);
13158: }
13159: }
13160:
13161: sub latest_receipt_algorithm_id {
13162: return 'receipt3';
13163: }
13164:
13165: sub recunique {
13166: my $fucourseid=shift;
13167: my $unique;
13168: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13169: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13170: $unique=$env{"course.$fucourseid.internal.encseed"};
13171: } else {
13172: $unique=$perlvar{'lonReceipt'};
13173: }
13174: return unpack("%32C*",$unique);
13175: }
13176:
13177: sub recprefix {
13178: my $fucourseid=shift;
13179: my $prefix;
13180: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13181: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13182: $prefix=$env{"course.$fucourseid.internal.encpref"};
13183: } else {
13184: $prefix=$perlvar{'lonHostID'};
13185: }
13186: return unpack("%32C*",$prefix);
13187: }
13188:
13189: sub ireceipt {
13190: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13191:
13192: my $return =&recprefix($fucourseid).'-';
13193:
13194: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13195: $env{'request.state'} eq 'construct') {
13196: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13197: return $return;
13198: }
13199:
13200: my $cuname=unpack("%32C*",$funame);
13201: my $cudom=unpack("%32C*",$fudom);
13202: my $cucourseid=unpack("%32C*",$fucourseid);
13203: my $cusymb=unpack("%32C*",$fusymb);
13204: my $cunique=&recunique($fucourseid);
13205: my $cpart=unpack("%32S*",$part);
13206: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13207:
13208: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13209:
13210: $return.= ($cunique%$cuname+
13211: $cunique%$cudom+
13212: $cusymb%$cuname+
13213: $cusymb%$cudom+
13214: $cucourseid%$cuname+
13215: $cucourseid%$cudom+
13216: $cpart%$cuname+
13217: $cpart%$cudom);
13218: } else {
13219: $return.= ($cunique%$cuname+
13220: $cunique%$cudom+
13221: $cusymb%$cuname+
13222: $cusymb%$cudom+
13223: $cucourseid%$cuname+
13224: $cucourseid%$cudom);
13225: }
13226: return $return;
13227: }
13228:
13229: sub receipt {
13230: my ($part)=@_;
13231: my ($symb,$courseid,$domain,$name) = &whichuser();
13232: return &ireceipt($name,$domain,$courseid,$symb,$part);
13233: }
13234:
13235: sub whichuser {
13236: my ($passedsymb)=@_;
13237: my ($symb,$courseid,$domain,$name,$publicuser);
13238: if (defined($env{'form.grade_symb'})) {
13239: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13240: my $allowed=&allowed('vgr',$tmp_courseid);
13241: if (!$allowed &&
13242: exists($env{'request.course.sec'}) &&
13243: $env{'request.course.sec'} !~ /^\s*$/) {
13244: $allowed=&allowed('vgr',$tmp_courseid.
13245: '/'.$env{'request.course.sec'});
13246: }
13247: if ($allowed) {
13248: ($symb)=&get_env_multiple('form.grade_symb');
13249: $courseid=$tmp_courseid;
13250: ($domain)=&get_env_multiple('form.grade_domain');
13251: ($name)=&get_env_multiple('form.grade_username');
13252: return ($symb,$courseid,$domain,$name,$publicuser);
13253: }
13254: }
13255: if (!$passedsymb) {
13256: $symb=&symbread();
13257: } else {
13258: $symb=$passedsymb;
13259: }
13260: $courseid=$env{'request.course.id'};
13261: $domain=$env{'user.domain'};
13262: $name=$env{'user.name'};
13263: if ($name eq 'public' && $domain eq 'public') {
13264: if (!defined($env{'form.username'})) {
13265: $env{'form.username'}.=time.rand(10000000);
13266: }
13267: $name.=$env{'form.username'};
13268: }
13269: return ($symb,$courseid,$domain,$name,$publicuser);
13270:
13271: }
13272:
13273: # ------------------------------------------------------------ Serves up a file
13274: # returns either the contents of the file or
13275: # -1 if the file doesn't exist
13276: #
13277: # if the target is a file that was uploaded via DOCS,
13278: # a check will be made to see if a current copy exists on the local server,
13279: # if it does this will be served, otherwise a copy will be retrieved from
13280: # the home server for the course and stored in /home/httpd/html/userfiles on
13281: # the local server.
13282:
13283: sub getfile {
13284: my ($file) = @_;
13285: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13286: &repcopy($file);
13287: return &readfile($file);
13288: }
13289:
13290: sub repcopy_userfile {
13291: my ($file)=@_;
13292: my $londocroot = $perlvar{'lonDocRoot'};
13293: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13294: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13295: my ($cdom,$cnum,$filename) =
13296: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13297: my $uri="/uploaded/$cdom/$cnum/$filename";
13298: if (-e "$file") {
13299: # we already have a local copy, check it out
13300: my @fileinfo = stat($file);
13301: my $rtncode;
13302: my $info;
13303: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13304: if ($lwpresp ne 'ok') {
13305: # there is no such file anymore, even though we had a local copy
13306: if ($rtncode eq '404') {
13307: unlink($file);
13308: }
13309: return -1;
13310: }
13311: if ($info < $fileinfo[9]) {
13312: # nice, the file we have is up-to-date, just say okay
13313: return 'ok';
13314: } else {
13315: # the file is outdated, get rid of it
13316: unlink($file);
13317: }
13318: }
13319: # one way or the other, at this point, we don't have the file
13320: # construct the correct path for the file
13321: my @parts = ($cdom,$cnum);
13322: if ($filename =~ m|^(.+)/[^/]+$|) {
13323: push @parts, split(/\//,$1);
13324: }
13325: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13326: foreach my $part (@parts) {
13327: $path .= '/'.$part;
13328: if (!-e $path) {
13329: mkdir($path,0770);
13330: }
13331: }
13332: # now the path exists for sure
13333: # get a user agent
13334: my $transferfile=$file.'.in.transfer';
13335: # FIXME: this should flock
13336: if (-e $transferfile) { return 'ok'; }
13337: my $request;
13338: $uri=~s/^\///;
13339: my $homeserver = &homeserver($cnum,$cdom);
13340: my $protocol = $protocol{$homeserver};
13341: $protocol = 'http' if ($protocol ne 'https');
13342: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
13343: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13344: # did it work?
13345: if ($response->is_error()) {
13346: unlink($transferfile);
13347: &logthis("Userfile repcopy failed for $uri");
13348: return -1;
13349: }
13350: # worked, rename the transfer file
13351: rename($transferfile,$file);
13352: return 'ok';
13353: }
13354:
13355: sub tokenwrapper {
13356: my $uri=shift;
13357: $uri=~s|^https?\://([^/]+)||;
13358: $uri=~s|^/||;
13359: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13360: my $token=$1;
13361: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13362: if ($udom && $uname && $file) {
13363: $file=~s|(\?\.*)*$||;
13364: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13365: my $homeserver = &homeserver($uname,$udom);
13366: my $protocol = $protocol{$homeserver};
13367: $protocol = 'http' if ($protocol ne 'https');
13368: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
13369: (($uri=~/\?/)?'&':'?').'token='.$token.
13370: '&tokenissued='.$perlvar{'lonHostID'};
13371: } else {
13372: return '/adm/notfound.html';
13373: }
13374: }
13375:
13376: # call with reqtype HEAD: get last modification time
13377: # call with reqtype GET: get the file contents
13378: # Do not call this with reqtype GET for large files! It loads everything into memory
13379: #
13380: sub getuploaded {
13381: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13382: $uri=~s/^\///;
13383: my $homeserver = &homeserver($cnum,$cdom);
13384: my $protocol = $protocol{$homeserver};
13385: $protocol = 'http' if ($protocol ne 'https');
13386: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
13387: my $request=new HTTP::Request($reqtype,$uri);
13388: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13389: $$rtncode = $response->code;
13390: if (! $response->is_success()) {
13391: return 'failed';
13392: }
13393: if ($reqtype eq 'HEAD') {
13394: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13395: } elsif ($reqtype eq 'GET') {
13396: $$info = $response->content;
13397: }
13398: return 'ok';
13399: }
13400:
13401: sub readfile {
13402: my $file = shift;
13403: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13404: my $fh;
13405: open($fh,"<",$file);
13406: my $a='';
13407: while (my $line = <$fh>) { $a .= $line; }
13408: return $a;
13409: }
13410:
13411: sub filelocation {
13412: my ($dir,$file) = @_;
13413: my $location;
13414: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13415:
13416: if ($file =~ m-^/adm/-) {
13417: $file=~s-^/adm/wrapper/-/-;
13418: $file=~s-^/adm/coursedocs/showdoc/-/-;
13419: }
13420:
13421: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13422: $location = $file;
13423: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13424: my ($udom,$uname,$filename)=
13425: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13426: my $home=&homeserver($uname,$udom);
13427: my $is_me=0;
13428: my @ids=¤t_machine_ids();
13429: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13430: if ($is_me) {
13431: $location=propath($udom,$uname).'/userfiles/'.$filename;
13432: } else {
13433: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13434: $udom.'/'.$uname.'/'.$filename;
13435: }
13436: } elsif ($file =~ m-^/adm/-) {
13437: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13438: } else {
13439: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13440: $file=~s:^/(res|priv)/:/:;
13441: my $space=$1;
13442: if ( !( $file =~ m:^/:) ) {
13443: $location = $dir. '/'.$file;
13444: } else {
13445: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13446: }
13447: }
13448: $location=~s://+:/:g; # remove duplicate /
13449: while ($location=~m{/\.\./}) {
13450: if ($location =~ m{/[^/]+/\.\./}) {
13451: $location=~ s{/[^/]+/\.\./}{/}g;
13452: } else {
13453: $location=~ s{/\.\./}{/}g;
13454: }
13455: } #remove dir/..
13456: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13457: return $location;
13458: }
13459:
13460: sub hreflocation {
13461: my ($dir,$file)=@_;
13462: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13463: $file=filelocation($dir,$file);
13464: } elsif ($file=~m-^/adm/-) {
13465: $file=~s-^/adm/wrapper/-/-;
13466: $file=~s-^/adm/coursedocs/showdoc/-/-;
13467: }
13468: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13469: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13470: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13471: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13472: {/uploaded/$1/$2/}x;
13473: }
13474: if ($file=~ m{^/userfiles/}) {
13475: $file =~ s{^/userfiles/}{/uploaded/};
13476: }
13477: return $file;
13478: }
13479:
13480:
13481:
13482:
13483:
13484: sub current_machine_domains {
13485: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13486: }
13487:
13488: sub machine_domains {
13489: my ($hostname) = @_;
13490: my @domains;
13491: my %hostname = &all_hostnames();
13492: while( my($id, $name) = each(%hostname)) {
13493: # &logthis("-$id-$name-$hostname-");
13494: if ($hostname eq $name) {
13495: push(@domains,&host_domain($id));
13496: }
13497: }
13498: return @domains;
13499: }
13500:
13501: sub current_machine_ids {
13502: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13503: }
13504:
13505: sub machine_ids {
13506: my ($hostname) = @_;
13507: $hostname ||= &hostname($perlvar{'lonHostID'});
13508: my @ids;
13509: my %name_to_host = &all_names();
13510: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13511: return @{ $name_to_host{$hostname} };
13512: }
13513: return;
13514: }
13515:
13516: sub additional_machine_domains {
13517: my @domains;
13518: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
13519: while( my $line = <$fh>) {
13520: $line =~ s/\s//g;
13521: push(@domains,$line);
13522: }
13523: return @domains;
13524: }
13525:
13526: sub default_login_domain {
13527: my $domain = $perlvar{'lonDefDomain'};
13528: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13529: foreach my $posdom (¤t_machine_domains(),
13530: &additional_machine_domains()) {
13531: if (lc($posdom) eq lc($testdomain)) {
13532: $domain=$posdom;
13533: last;
13534: }
13535: }
13536: return $domain;
13537: }
13538:
13539: # ------------------------------------------------------------- Declutters URLs
13540:
13541: sub declutter {
13542: my $thisfn=shift;
13543: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13544: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
13545: $thisfn=~s{^/home/httpd/html}{};
13546: }
13547: $thisfn=~s/^\///;
13548: $thisfn=~s|^adm/wrapper/||;
13549: $thisfn=~s|^adm/coursedocs/showdoc/||;
13550: $thisfn=~s/^res\///;
13551: $thisfn=~s/^priv\///;
13552: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
13553: $thisfn=~s/\?.+$//;
13554: }
13555: return $thisfn;
13556: }
13557:
13558: # ------------------------------------------------------------- Clutter up URLs
13559:
13560: sub clutter {
13561: my $thisfn='/'.&declutter(shift);
13562: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
13563: || $thisfn =~ m{^/adm/(includes|pages)} ) {
13564: $thisfn='/res'.$thisfn;
13565: }
13566: if ($thisfn !~m|^/adm|) {
13567: if ($thisfn =~ m|^/ext/|) {
13568: $thisfn='/adm/wrapper'.$thisfn;
13569: } else {
13570: my ($ext) = ($thisfn =~ /\.(\w+)$/);
13571: my $embstyle=&Apache::loncommon::fileembstyle($ext);
13572: if ($embstyle eq 'ssi'
13573: || ($embstyle eq 'hdn')
13574: || ($embstyle eq 'rat')
13575: || ($embstyle eq 'prv')
13576: || ($embstyle eq 'ign')) {
13577: #do nothing with these
13578: } elsif (($embstyle eq 'img')
13579: || ($embstyle eq 'emb')
13580: || ($embstyle eq 'wrp')) {
13581: $thisfn='/adm/wrapper'.$thisfn;
13582: } elsif ($embstyle eq 'unk'
13583: && $thisfn!~/\.(sequence|page)$/) {
13584: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
13585: } else {
13586: # &logthis("Got a blank emb style");
13587: }
13588: }
13589: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
13590: $thisfn='/adm/wrapper'.$thisfn;
13591: }
13592: return $thisfn;
13593: }
13594:
13595: sub clutter_with_no_wrapper {
13596: my $uri = &clutter(shift);
13597: if ($uri =~ m-^/adm/-) {
13598: $uri =~ s-^/adm/wrapper/-/-;
13599: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
13600: }
13601: return $uri;
13602: }
13603:
13604: sub freeze_escape {
13605: my ($value)=@_;
13606: if (ref($value)) {
13607: $value=&nfreeze($value);
13608: return '__FROZEN__'.&escape($value);
13609: }
13610: return &escape($value);
13611: }
13612:
13613:
13614: sub thaw_unescape {
13615: my ($value)=@_;
13616: if ($value =~ /^__FROZEN__/) {
13617: substr($value,0,10,undef);
13618: $value=&unescape($value);
13619: return &thaw($value);
13620: }
13621: return &unescape($value);
13622: }
13623:
13624: sub correct_line_ends {
13625: my ($result)=@_;
13626: $$result =~s/\r\n/\n/mg;
13627: $$result =~s/\r/\n/mg;
13628: }
13629: # ================================================================ Main Program
13630:
13631: sub goodbye {
13632: &logthis("Starting Shut down");
13633: #not converted to using infrastruture and probably shouldn't be
13634: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13635: #converted
13636: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13637: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13638: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13639: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13640: #1.1 only
13641: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13642: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13643: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13644: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13645: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13646: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13647: &logthis(sprintf("%-20s is %s",'hits',$hits));
13648: &flushcourselogs();
13649: &logthis("Shutting down");
13650: }
13651:
13652: sub get_dns {
13653: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13654: if (!$ignore_cache) {
13655: my ($content,$cached)=
13656: &Apache::lonnet::is_cached_new('dns',$url);
13657: if ($cached) {
13658: &$func($content,$hashref);
13659: return;
13660: }
13661: }
13662:
13663: my %alldns;
13664: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
13665: foreach my $dns (<$config>) {
13666: next if ($dns !~ /^\^(\S*)/x);
13667: my $line = $1;
13668: my ($host,$protocol) = split(/:/,$line);
13669: if ($protocol ne 'https') {
13670: $protocol = 'http';
13671: }
13672: $alldns{$host} = $protocol;
13673: }
13674: close($config);
13675: }
13676: while (%alldns) {
13677: my ($dns) = sort { $b cmp $a } keys(%alldns);
13678: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13679: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
13680: delete($alldns{$dns});
13681: next if ($response->is_error());
13682: if ($url eq '/adm/dns/loncapaCRL') {
13683: return &$func($response);
13684: } else {
13685: my @content = split("\n",$response->content);
13686: unless ($nocache) {
13687: &do_cache_new('dns',$url,\@content,30*24*60*60);
13688: }
13689: &$func(\@content,$hashref);
13690: return;
13691: }
13692: }
13693: my $which = (split('/',$url,4))[3];
13694: if ($which eq 'loncapaCRL') {
13695: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13696: if (-e $diskfile) {
13697: &logthis("unable to contact DNS, on disk file $diskfile not updated");
13698: } else {
13699: &logthis("unable to contact DNS, no on disk file $diskfile available");
13700: }
13701: } else {
13702: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13703: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
13704: my @content = <$config>;
13705: close($config);
13706: &$func(\@content,$hashref);
13707: }
13708: }
13709: return;
13710: }
13711:
13712: # ------------------------------------------------------Get DNS checksums file
13713: sub parse_dns_checksums_tab {
13714: my ($lines,$hashref) = @_;
13715: my $lonhost = $perlvar{'lonHostID'};
13716: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13717: my $loncaparev = &get_server_loncaparev($machine_dom);
13718: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13719: my $webconfdir = '/etc/httpd/conf';
13720: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13721: $webconfdir = '/etc/apache2';
13722: } elsif ($distro =~ /^sles(\d+)$/) {
13723: if ($1 >= 10) {
13724: $webconfdir = '/etc/apache2';
13725: }
13726: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13727: if ($1 >= 10.0) {
13728: $webconfdir = '/etc/apache2';
13729: }
13730: }
13731: my ($release,$timestamp) = split(/\-/,$loncaparev);
13732: my (%chksum,%revnum);
13733: if (ref($lines) eq 'ARRAY') {
13734: chomp(@{$lines});
13735: my $version = shift(@{$lines});
13736: if ($version eq $release) {
13737: foreach my $line (@{$lines}) {
13738: my ($file,$version,$shasum) = split(/,/,$line);
13739: if ($file =~ m{^/etc/httpd/conf}) {
13740: if ($webconfdir eq '/etc/apache2') {
13741: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13742: }
13743: }
13744: $chksum{$file} = $shasum;
13745: $revnum{$file} = $version;
13746: }
13747: if (ref($hashref) eq 'HASH') {
13748: %{$hashref} = (
13749: sums => \%chksum,
13750: versions => \%revnum,
13751: );
13752: }
13753: }
13754: }
13755: return;
13756: }
13757:
13758: sub fetch_dns_checksums {
13759: my %checksums;
13760: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13761: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13762: my ($release,$timestamp) = split(/\-/,$loncaparev);
13763: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13764: \%checksums);
13765: return \%checksums;
13766: }
13767:
13768: sub fetch_crl_pemfile {
13769: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
13770: }
13771:
13772: sub save_crl_pem {
13773: my ($response) = @_;
13774: my ($msg,$hadchanges);
13775: if (ref($response)) {
13776: my $now = time;
13777: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
13778: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
13779: if (open(my $fh,'>',"$tmpcrl")) {
13780: print $fh $response->content;
13781: close($fh);
13782: if (-e $lonca) {
13783: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
13784: my $check = <PIPE>;
13785: close(PIPE);
13786: chomp($check);
13787: if ($check eq 'verify OK') {
13788: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13789: my $backup;
13790: if (-e $dest) {
13791: if (&File::Copy::move($dest,"$dest.bak")) {
13792: $backup = 'ok';
13793: }
13794: }
13795: if (&File::Copy::move($tmpcrl,$dest)) {
13796: $msg = 'ok';
13797: if ($backup) {
13798: my (%oldnums,%newnums);
13799: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
13800: while (<PIPE>) {
13801: $oldnums{(split(/:/))[1]} = 1;
13802: }
13803: close(PIPE);
13804: }
13805: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
13806: while(<PIPE>) {
13807: $newnums{(split(/:/))[1]} = 1;
13808: }
13809: close(PIPE);
13810: }
13811: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
13812: unless (exists($oldnums{$key})) {
13813: $hadchanges = 1;
13814: last;
13815: }
13816: }
13817: unless ($hadchanges) {
13818: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
13819: unless (exists($newnums{$key})) {
13820: $hadchanges = 1;
13821: last;
13822: }
13823: }
13824: }
13825: }
13826: }
13827: } else {
13828: unlink($tmpcrl);
13829: }
13830: } else {
13831: unlink($tmpcrl);
13832: }
13833: } else {
13834: unlink($tmpcrl);
13835: }
13836: }
13837: }
13838: return ($msg,$hadchanges);
13839: }
13840:
13841: # ------------------------------------------------------------ Read domain file
13842: {
13843: my $loaded;
13844: my %domain;
13845:
13846: sub parse_domain_tab {
13847: my ($lines) = @_;
13848: foreach my $line (@$lines) {
13849: next if ($line =~ /^(\#|\s*$ )/x);
13850:
13851: chomp($line);
13852: my ($name,@elements) = split(/:/,$line,9);
13853: my %this_domain;
13854: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13855: 'lang_def', 'city', 'longi', 'lati',
13856: 'primary') {
13857: $this_domain{$field} = shift(@elements);
13858: }
13859: $domain{$name} = \%this_domain;
13860: }
13861: }
13862:
13863: sub reset_domain_info {
13864: undef($loaded);
13865: undef(%domain);
13866: }
13867:
13868: sub load_domain_tab {
13869: my ($ignore_cache,$nocache) = @_;
13870: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13871: my $fh;
13872: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
13873: my @lines = <$fh>;
13874: &parse_domain_tab(\@lines);
13875: }
13876: close($fh);
13877: $loaded = 1;
13878: }
13879:
13880: sub domain {
13881: &load_domain_tab() if (!$loaded);
13882:
13883: my ($name,$what) = @_;
13884: return if ( !exists($domain{$name}) );
13885:
13886: if (!$what) {
13887: return $domain{$name}{'description'};
13888: }
13889: return $domain{$name}{$what};
13890: }
13891:
13892: sub domain_info {
13893: &load_domain_tab() if (!$loaded);
13894: return %domain;
13895: }
13896:
13897: }
13898:
13899:
13900: # ------------------------------------------------------------- Read hosts file
13901: {
13902: my %hostname;
13903: my %hostdom;
13904: my %libserv;
13905: my $loaded;
13906: my %name_to_host;
13907: my %internetdom;
13908: my %LC_dns_serv;
13909:
13910: sub parse_hosts_tab {
13911: my ($file) = @_;
13912: foreach my $configline (@$file) {
13913: next if ($configline =~ /^(\#|\s*$ )/x);
13914: chomp($configline);
13915: if ($configline =~ /^\^/) {
13916: if ($configline =~ /^\^([\w.\-]+)/) {
13917: $LC_dns_serv{$1} = 1;
13918: }
13919: next;
13920: }
13921: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13922: $name=~s/\s//g;
13923: if ($id && $domain && $role && $name) {
13924: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
13925: my $curr = $hostname{$id};
13926: my $skip;
13927: if (ref($name_to_host{$curr}) eq 'ARRAY') {
13928: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
13929: $skip = 1;
13930: } else {
13931: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
13932: }
13933: }
13934: unless ($skip) {
13935: push(@{$name_to_host{$name}},$id);
13936: }
13937: } else {
13938: push(@{$name_to_host{$name}},$id);
13939: }
13940: $hostname{$id}=$name;
13941: $hostdom{$id}=$domain;
13942: if ($role eq 'library') { $libserv{$id}=$name; }
13943: if (defined($protocol)) {
13944: if ($protocol eq 'https') {
13945: $protocol{$id} = $protocol;
13946: } else {
13947: $protocol{$id} = 'http';
13948: }
13949: } else {
13950: $protocol{$id} = 'http';
13951: }
13952: if (defined($intdom)) {
13953: $internetdom{$id} = $intdom;
13954: }
13955: }
13956: }
13957: }
13958:
13959: sub reset_hosts_info {
13960: &purge_remembered();
13961: &reset_domain_info();
13962: &reset_hosts_ip_info();
13963: undef(%internetdom);
13964: undef(%name_to_host);
13965: undef(%hostname);
13966: undef(%hostdom);
13967: undef(%libserv);
13968: undef($loaded);
13969: }
13970:
13971: sub load_hosts_tab {
13972: my ($ignore_cache,$nocache) = @_;
13973: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
13974: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
13975: my @config = <$config>;
13976: &parse_hosts_tab(\@config);
13977: close($config);
13978: $loaded=1;
13979: }
13980:
13981: sub hostname {
13982: &load_hosts_tab() if (!$loaded);
13983:
13984: my ($lonid) = @_;
13985: return $hostname{$lonid};
13986: }
13987:
13988: sub all_hostnames {
13989: &load_hosts_tab() if (!$loaded);
13990:
13991: return %hostname;
13992: }
13993:
13994: sub all_names {
13995: my ($ignore_cache,$nocache) = @_;
13996: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
13997:
13998: return %name_to_host;
13999: }
14000:
14001: sub all_host_domain {
14002: &load_hosts_tab() if (!$loaded);
14003: return %hostdom;
14004: }
14005:
14006: sub all_host_intdom {
14007: &load_hosts_tab() if (!$loaded);
14008: return %internetdom;
14009: }
14010:
14011: sub is_library {
14012: &load_hosts_tab() if (!$loaded);
14013:
14014: return exists($libserv{$_[0]});
14015: }
14016:
14017: sub all_library {
14018: &load_hosts_tab() if (!$loaded);
14019:
14020: return %libserv;
14021: }
14022:
14023: sub unique_library {
14024: #2x reverse removes all hostnames that appear more than once
14025: my %unique = reverse &all_library();
14026: return reverse %unique;
14027: }
14028:
14029: sub get_servers {
14030: &load_hosts_tab() if (!$loaded);
14031:
14032: my ($domain,$type) = @_;
14033: my %possible_hosts = ($type eq 'library') ? %libserv
14034: : %hostname;
14035: my %result;
14036: if (ref($domain) eq 'ARRAY') {
14037: while ( my ($host,$hostname) = each(%possible_hosts)) {
14038: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14039: $result{$host} = $hostname;
14040: }
14041: }
14042: } else {
14043: while ( my ($host,$hostname) = each(%possible_hosts)) {
14044: if ($hostdom{$host} eq $domain) {
14045: $result{$host} = $hostname;
14046: }
14047: }
14048: }
14049: return %result;
14050: }
14051:
14052: sub get_unique_servers {
14053: my %unique = reverse &get_servers(@_);
14054: return reverse %unique;
14055: }
14056:
14057: sub host_domain {
14058: &load_hosts_tab() if (!$loaded);
14059:
14060: my ($lonid) = @_;
14061: return $hostdom{$lonid};
14062: }
14063:
14064: sub all_domains {
14065: &load_hosts_tab() if (!$loaded);
14066:
14067: my %seen;
14068: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14069: return @uniq;
14070: }
14071:
14072: sub internet_dom {
14073: &load_hosts_tab() if (!$loaded);
14074:
14075: my ($lonid) = @_;
14076: return $internetdom{$lonid};
14077: }
14078:
14079: sub is_LC_dns {
14080: &load_hosts_tab() if (!$loaded);
14081:
14082: my ($hostname) = @_;
14083: return exists($LC_dns_serv{$hostname});
14084: }
14085:
14086: }
14087:
14088: {
14089: my %iphost;
14090: my %name_to_ip;
14091: my %lonid_to_ip;
14092:
14093: sub get_hosts_from_ip {
14094: my ($ip) = @_;
14095: my %iphosts = &get_iphost();
14096: if (ref($iphosts{$ip})) {
14097: return @{$iphosts{$ip}};
14098: }
14099: return;
14100: }
14101:
14102: sub reset_hosts_ip_info {
14103: undef(%iphost);
14104: undef(%name_to_ip);
14105: undef(%lonid_to_ip);
14106: }
14107:
14108: sub get_host_ip {
14109: my ($lonid) = @_;
14110: if (exists($lonid_to_ip{$lonid})) {
14111: return $lonid_to_ip{$lonid};
14112: }
14113: my $name=&hostname($lonid);
14114: my $ip = gethostbyname($name);
14115: return if (!$ip || length($ip) ne 4);
14116: $ip=inet_ntoa($ip);
14117: $name_to_ip{$name} = $ip;
14118: $lonid_to_ip{$lonid} = $ip;
14119: return $ip;
14120: }
14121:
14122: sub get_iphost {
14123: my ($ignore_cache,$nocache) = @_;
14124:
14125: if (!$ignore_cache) {
14126: if (%iphost) {
14127: return %iphost;
14128: }
14129: my ($ip_info,$cached)=
14130: &Apache::lonnet::is_cached_new('iphost','iphost');
14131: if ($cached) {
14132: %iphost = %{$ip_info->[0]};
14133: %name_to_ip = %{$ip_info->[1]};
14134: %lonid_to_ip = %{$ip_info->[2]};
14135: return %iphost;
14136: }
14137: }
14138:
14139: # get yesterday's info for fallback
14140: my %old_name_to_ip;
14141: my ($ip_info,$cached)=
14142: &Apache::lonnet::is_cached_new('iphost','iphost');
14143: if ($cached) {
14144: %old_name_to_ip = %{$ip_info->[1]};
14145: }
14146:
14147: my %name_to_host = &all_names($ignore_cache,$nocache);
14148: foreach my $name (keys(%name_to_host)) {
14149: my $ip;
14150: if (!exists($name_to_ip{$name})) {
14151: $ip = gethostbyname($name);
14152: if (!$ip || length($ip) ne 4) {
14153: if (defined($old_name_to_ip{$name})) {
14154: $ip = $old_name_to_ip{$name};
14155: &logthis("Can't find $name defaulting to old $ip");
14156: } else {
14157: &logthis("Name $name no IP found");
14158: next;
14159: }
14160: } else {
14161: $ip=inet_ntoa($ip);
14162: }
14163: $name_to_ip{$name} = $ip;
14164: } else {
14165: $ip = $name_to_ip{$name};
14166: }
14167: foreach my $id (@{ $name_to_host{$name} }) {
14168: $lonid_to_ip{$id} = $ip;
14169: }
14170: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14171: }
14172: unless ($nocache) {
14173: &do_cache_new('iphost','iphost',
14174: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14175: 48*60*60);
14176: }
14177:
14178: return %iphost;
14179: }
14180:
14181: #
14182: # Given a DNS returns the loncapa host name for that DNS
14183: #
14184: sub host_from_dns {
14185: my ($dns) = @_;
14186: my @hosts;
14187: my $ip;
14188:
14189: if (exists($name_to_ip{$dns})) {
14190: $ip = $name_to_ip{$dns};
14191: }
14192: if (!$ip) {
14193: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14194: if (length($ip) == 4) {
14195: $ip = &IO::Socket::inet_ntoa($ip);
14196: }
14197: }
14198: if ($ip) {
14199: @hosts = get_hosts_from_ip($ip);
14200: return $hosts[0];
14201: }
14202: return undef;
14203: }
14204:
14205: sub get_internet_names {
14206: my ($lonid) = @_;
14207: return if ($lonid eq '');
14208: my ($idnref,$cached)=
14209: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14210: if ($cached) {
14211: return $idnref;
14212: }
14213: my $ip = &get_host_ip($lonid);
14214: my @hosts = &get_hosts_from_ip($ip);
14215: my %iphost = &get_iphost();
14216: my (@idns,%seen);
14217: foreach my $id (@hosts) {
14218: my $dom = &host_domain($id);
14219: my $prim_id = &domain($dom,'primary');
14220: my $prim_ip = &get_host_ip($prim_id);
14221: next if ($seen{$prim_ip});
14222: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14223: foreach my $id (@{$iphost{$prim_ip}}) {
14224: my $intdom = &internet_dom($id);
14225: unless (grep(/^\Q$intdom\E$/,@idns)) {
14226: push(@idns,$intdom);
14227: }
14228: }
14229: }
14230: $seen{$prim_ip} = 1;
14231: }
14232: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14233: }
14234:
14235: }
14236:
14237: sub all_loncaparevs {
14238: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14239: }
14240:
14241: # ---------------------------------------------------------- Read loncaparev table
14242: {
14243: sub load_loncaparevs {
14244: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14245: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14246: while (my $configline=<$config>) {
14247: chomp($configline);
14248: my ($hostid,$loncaparev)=split(/:/,$configline);
14249: $loncaparevs{$hostid}=$loncaparev;
14250: }
14251: close($config);
14252: }
14253: }
14254: }
14255: }
14256:
14257: # ---------------------------------------------------------- Read serverhostID table
14258: {
14259: sub load_serverhomeIDs {
14260: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14261: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14262: while (my $configline=<$config>) {
14263: chomp($configline);
14264: my ($name,$id)=split(/:/,$configline);
14265: $serverhomeIDs{$name}=$id;
14266: }
14267: close($config);
14268: }
14269: }
14270: }
14271: }
14272:
14273:
14274: BEGIN {
14275:
14276: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14277: unless ($readit) {
14278: {
14279: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14280: %perlvar = (%perlvar,%{$configvars});
14281: }
14282:
14283:
14284: # ------------------------------------------------------ Read spare server file
14285: {
14286: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14287:
14288: while (my $configline=<$config>) {
14289: chomp($configline);
14290: if ($configline) {
14291: my ($host,$type) = split(':',$configline,2);
14292: if (!defined($type) || $type eq '') { $type = 'default' };
14293: push(@{ $spareid{$type} }, $host);
14294: }
14295: }
14296: close($config);
14297: }
14298: # ------------------------------------------------------------ Read permissions
14299: {
14300: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14301:
14302: while (my $configline=<$config>) {
14303: chomp($configline);
14304: if ($configline) {
14305: my ($role,$perm)=split(/ /,$configline);
14306: if ($perm ne '') { $pr{$role}=$perm; }
14307: }
14308: }
14309: close($config);
14310: }
14311:
14312: # -------------------------------------------- Read plain texts for permissions
14313: {
14314: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14315:
14316: while (my $configline=<$config>) {
14317: chomp($configline);
14318: if ($configline) {
14319: my ($short,@plain)=split(/:/,$configline);
14320: %{$prp{$short}} = ();
14321: if (@plain > 0) {
14322: $prp{$short}{'std'} = $plain[0];
14323: for (my $i=1; $i<@plain; $i++) {
14324: $prp{$short}{'alt'.$i} = $plain[$i];
14325: }
14326: }
14327: }
14328: }
14329: close($config);
14330: }
14331:
14332: # ---------------------------------------------------------- Read package table
14333: {
14334: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14335:
14336: while (my $configline=<$config>) {
14337: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14338: chomp($configline);
14339: my ($short,$plain)=split(/:/,$configline);
14340: my ($pack,$name)=split(/\&/,$short);
14341: if ($plain ne '') {
14342: $packagetab{$pack.'&'.$name.'&name'}=$name;
14343: $packagetab{$short}=$plain;
14344: }
14345: }
14346: close($config);
14347: }
14348:
14349: # ---------------------------------------------------------- Read loncaparev table
14350:
14351: &load_loncaparevs();
14352:
14353: # ---------------------------------------------------------- Read serverhostID table
14354:
14355: &load_serverhomeIDs();
14356:
14357: # ---------------------------------------------------------- Read releaseslist XML
14358: {
14359: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14360: if (-e $file) {
14361: my $parser = HTML::LCParser->new($file);
14362: while (my $token = $parser->get_token()) {
14363: if ($token->[0] eq 'S') {
14364: my $item = $token->[1];
14365: my $name = $token->[2]{'name'};
14366: my $value = $token->[2]{'value'};
14367: my $valuematch = $token->[2]{'valuematch'};
14368: my $namematch = $token->[2]{'namematch'};
14369: if ($item eq 'parameter') {
14370: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14371: my $release = $parser->get_text();
14372: $release =~ s/(^\s*|\s*$ )//gx;
14373: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14374: }
14375: } elsif ($item ne '' && $name ne '') {
14376: my $release = $parser->get_text();
14377: $release =~ s/(^\s*|\s*$ )//gx;
14378: $needsrelease{$item.':'.$name.':'.$value} = $release;
14379: }
14380: }
14381: }
14382: }
14383: }
14384:
14385: # ---------------------------------------------------------- Read managers table
14386: {
14387: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14388: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14389: while (my $configline=<$config>) {
14390: chomp($configline);
14391: next if ($configline =~ /^\#/);
14392: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14393: $managerstab{$configline} = 1;
14394: }
14395: }
14396: close($config);
14397: }
14398: }
14399: }
14400:
14401: # ------------- set up temporary directory
14402: {
14403: $tmpdir = LONCAPA::tempdir();
14404:
14405: }
14406:
14407: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14408: 'compress_threshold'=> 20_000,
14409: });
14410:
14411: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14412: $dumpcount=0;
14413: $locknum=0;
14414:
14415: &logtouch();
14416: &logthis('<font color="yellow">INFO: Read configuration</font>');
14417: $readit=1;
14418: {
14419: use integer;
14420: my $test=(2**32)+1;
14421: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14422: &logthis(" Detected 64bit platform ($_64bit)");
14423: }
14424: }
14425: }
14426:
14427: 1;
14428: __END__
14429:
14430: =pod
14431:
14432: =head1 NAME
14433:
14434: Apache::lonnet - Subroutines to ask questions about things in the network.
14435:
14436: =head1 SYNOPSIS
14437:
14438: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14439:
14440: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14441:
14442: Common parameters:
14443:
14444: =over 4
14445:
14446: =item *
14447:
14448: $uname : an internal username (if $cname expecting a course Id specifically)
14449:
14450: =item *
14451:
14452: $udom : a domain (if $cdom expecting a course's domain specifically)
14453:
14454: =item *
14455:
14456: $symb : a resource instance identifier
14457:
14458: =item *
14459:
14460: $namespace : the name of a .db file that contains the data needed or
14461: being set.
14462:
14463: =back
14464:
14465: =head1 OVERVIEW
14466:
14467: lonnet provides subroutines which interact with the
14468: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14469: about classes, users, and resources.
14470:
14471: For many of these objects you can also use this to store data about
14472: them or modify them in various ways.
14473:
14474: =head2 Symbs
14475:
14476: To identify a specific instance of a resource, LON-CAPA uses symbols
14477: or "symbs"X<symb>. These identifiers are built from the URL of the
14478: map, the resource number of the resource in the map, and the URL of
14479: the resource itself. The latter is somewhat redundant, but might help
14480: if maps change.
14481:
14482: An example is
14483:
14484: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
14485:
14486: The respective map entry is
14487:
14488: <resource id="19" src="/res/msu/korte/tests/part12.problem"
14489: title="Problem 2">
14490: </resource>
14491:
14492: Symbs are used by the random number generator, as well as to store and
14493: restore data specific to a certain instance of for example a problem.
14494:
14495: =head2 Storing And Retrieving Data
14496:
14497: X<store()>X<cstore()>X<restore()>Three of the most important functions
14498: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
14499: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
14500: is is the non-critical message twin of cstore. These functions are for
14501: handlers to store a perl hash to a user's permanent data space in an
14502: easy manner, and to retrieve it again on another call. It is expected
14503: that a handler would use this once at the beginning to retrieve data,
14504: and then again once at the end to send only the new data back.
14505:
14506: The data is stored in the user's data directory on the user's
14507: homeserver under the ID of the course.
14508:
14509: The hash that is returned by restore will have all of the previous
14510: value for all of the elements of the hash.
14511:
14512: Example:
14513:
14514: #creating a hash
14515: my %hash;
14516: $hash{'foo'}='bar';
14517:
14518: #storing it
14519: &Apache::lonnet::cstore(\%hash);
14520:
14521: #changing a value
14522: $hash{'foo'}='notbar';
14523:
14524: #adding a new value
14525: $hash{'bar'}='foo';
14526: &Apache::lonnet::cstore(\%hash);
14527:
14528: #retrieving the hash
14529: my %history=&Apache::lonnet::restore();
14530:
14531: #print the hash
14532: foreach my $key (sort(keys(%history))) {
14533: print("\%history{$key} = $history{$key}");
14534: }
14535:
14536: Will print out:
14537:
14538: %history{1:foo} = bar
14539: %history{1:keys} = foo:timestamp
14540: %history{1:timestamp} = 990455579
14541: %history{2:bar} = foo
14542: %history{2:foo} = notbar
14543: %history{2:keys} = foo:bar:timestamp
14544: %history{2:timestamp} = 990455580
14545: %history{bar} = foo
14546: %history{foo} = notbar
14547: %history{timestamp} = 990455580
14548: %history{version} = 2
14549:
14550: Note that the special hash entries C<keys>, C<version> and
14551: C<timestamp> were added to the hash. C<version> will be equal to the
14552: total number of versions of the data that have been stored. The
14553: C<timestamp> attribute will be the UNIX time the hash was
14554: stored. C<keys> is available in every historical section to list which
14555: keys were added or changed at a specific historical revision of a
14556: hash.
14557:
14558: B<Warning>: do not store the hash that restore returns directly. This
14559: will cause a mess since it will restore the historical keys as if the
14560: were new keys. I.E. 1:foo will become 1:1:foo etc.
14561:
14562: Calling convention:
14563:
14564: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
14565: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
14566:
14567: For more detailed information, see lonnet specific documentation.
14568:
14569: =head1 RETURN MESSAGES
14570:
14571: =over 4
14572:
14573: =item * B<con_lost>: unable to contact remote host
14574:
14575: =item * B<con_delayed>: unable to contact remote host, message will be delivered
14576: when the connection is brought back up
14577:
14578: =item * B<con_failed>: unable to contact remote host and unable to save message
14579: for later delivery
14580:
14581: =item * B<error:>: an error a occurred, a description of the error follows the :
14582:
14583: =item * B<no_such_host>: unable to fund a host associated with the user/domain
14584: that was requested
14585:
14586: =back
14587:
14588: =head1 PUBLIC SUBROUTINES
14589:
14590: =head2 Session Environment Functions
14591:
14592: =over 4
14593:
14594: =item *
14595: X<appenv()>
14596: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
14597: the user envirnoment file, and will be restored for each access this
14598: user makes during this session, also modifies the %env for the current
14599: process. Optional rolesarrayref - if defined contains a reference to an array
14600: of roles which are exempt from the restriction on modifying user.role entries
14601: in the user's environment.db and in %env.
14602:
14603: =item *
14604: X<delenv()>
14605: B<delenv($delthis,$regexp)>: removes all items from the session
14606: environment file that begin with $delthis. If the
14607: optional second arg - $regexp - is true, $delthis is treated as a
14608: regular expression, otherwise \Q$delthis\E is used.
14609: The values are also deleted from the current processes %env.
14610:
14611: =item * get_env_multiple($name)
14612:
14613: gets $name from the %env hash, it seemlessly handles the cases where multiple
14614: values may be defined and end up as an array ref.
14615:
14616: returns an array of values
14617:
14618: =back
14619:
14620: =head2 User Information
14621:
14622: =over 4
14623:
14624: =item *
14625: X<queryauthenticate()>
14626: B<queryauthenticate($uname,$udom)>: try to determine user's current
14627: authentication scheme
14628:
14629: =item *
14630: X<authenticate()>
14631: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
14632: authenticate user from domain's lib servers (first use the current
14633: one). C<$upass> should be the users password.
14634: $checkdefauth is optional (value is 1 if a check should be made to
14635: authenticate user using default authentication method, and allow
14636: account creation if username does not have account in the domain).
14637: $clientcancheckhost is optional (value is 1 if checking whether the
14638: server can host will occur on the client side in lonauth.pm).
14639:
14640: =item *
14641: X<homeserver()>
14642: B<homeserver($uname,$udom)>: find the server which has
14643: the user's directory and files (there must be only one), this caches
14644: the answer, and also caches if there is a borken connection.
14645:
14646: =item *
14647: X<idget()>
14648: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
14649: a list of student/employee IDs or clicker IDs
14650: (student/employee IDs are a unique resource in a domain, there must be
14651: only 1 ID per username, and only 1 username per ID in a specific domain).
14652: clickerIDs are not necessarily unique, as students might share clickers.
14653: (returns hash: id=>name,id=>name)
14654:
14655: =item *
14656: X<idrget()>
14657: B<idrget($udom,@unames)>: find the IDs behind a list of
14658: usernames (returns hash: name=>id,name=>id)
14659:
14660: =item *
14661: X<idput()>
14662: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
14663: names and associated student/employee IDs or clicker IDs.
14664:
14665: =item *
14666: X<iddel()>
14667: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
14668: student/employee ID or clicker ID username look-ups from domain.
14669: The homeserver ($uhome) and namespace ($namespace) are optional.
14670: If no $uhome is provided, it will be determined usig &homeserver()
14671: for each user. If no $namespace is provided, the default is ids.
14672:
14673: =item *
14674: X<updateclickers()>
14675: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
14676: clicker ID-to-username look-ups in clickers.db on library server.
14677: Permitted actions are add or del (i.e., add or delete). The
14678: clickers.db contains clickerID as keys (escaped), and each corresponding
14679: value is an escaped comma-separated list of usernames (for whom the
14680: library server is the homeserver), who registered that particular ID.
14681: If $critical is true, the update will be sent via &critical, otherwise
14682: &reply() will be used.
14683:
14684: =item *
14685: X<rolesinit()>
14686: B<rolesinit($udom,$username)>: get user privileges.
14687: returns user role, first access and timer interval hashes
14688:
14689: =item *
14690: X<privileged()>
14691: B<privileged($username,$domain)>: returns a true if user has a
14692: privileged and active role (i.e. su or dc), false otherwise.
14693:
14694: =item *
14695: X<getsection()>
14696: B<getsection($udom,$uname,$cname)>: finds the section of student in the
14697: course $cname, return section name/number or '' for "not in course"
14698: and '-1' for "no section"
14699:
14700: =item *
14701: X<userenvironment()>
14702: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
14703: passed in @what from the requested user's environment, returns a hash
14704:
14705: =item *
14706: X<userlog_query()>
14707: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
14708: activity.log file. %filters defines filters applied when parsing the
14709: log file. These can be start or end timestamps, or the type of action
14710: - log to look for Login or Logout events, check for Checkin or
14711: Checkout, role for role selection. The response is in the form
14712: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
14713: escaped strings of the action recorded in the activity.log file.
14714:
14715: =back
14716:
14717: =head2 User Roles
14718:
14719: =over 4
14720:
14721: =item *
14722:
14723: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
14724: returns codes for allowed actions.
14725:
14726: The first argument is required, all others are optional.
14727:
14728: $priv is the privilege being checked.
14729: $uri contains additional information about what is being checked for access (e.g.,
14730: URL, course ID etc.).
14731: $symb is the unique resource instance identifier in a course; if needed,
14732: but not provided, it will be retrieved via a call to &symbread().
14733: $role is the role for which a priv is being checked (only used if priv is evb).
14734: $clientip is the user's IP address (only used when checking for access to portfolio
14735: files).
14736: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
14737: prevents recursive calls to &allowed.
14738:
14739: F: full access
14740: U,I,K: authentication modes (cxx only)
14741: '': forbidden
14742: 1: user needs to choose course
14743: 2: browse allowed
14744: A: passphrase authentication needed
14745: B: access temporarily blocked because of a blocking event in a course.
14746:
14747: =item *
14748:
14749: constructaccess($url,$setpriv) : check for access to construction space URL
14750:
14751: See if the owner domain and name in the URL match those in the
14752: expected environment. If so, return three element list
14753: ($ownername,$ownerdomain,$ownerhome).
14754:
14755: Otherwise return the null string.
14756:
14757: If second argument 'setpriv' is true, it assigns the privileges,
14758: and returns the same three element list, unless the owner has
14759: blocked "ad hoc" Domain Coordinator access to the Author Space,
14760: in which case the null string is returned.
14761:
14762: =item *
14763:
14764: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14765: define a custom role rolename set privileges in format of lonTabs/roles.tab
14766: for system, domain, and course level. $uname and $udom are optional (current
14767: user's username and domain will be used when either of $uname or $udom are absent.
14768:
14769: =item *
14770:
14771: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14772: (rolesplain.tab); plain text explanation of a user role term.
14773: $type is Course (default) or Community.
14774: If $forcedefault evaluates to true, text returned will be default
14775: text for $type. Otherwise, if this is a course, the text returned
14776: will be a custom name for the role (if defined in the course's
14777: environment). If no custom name is defined the default is returned.
14778:
14779: =item *
14780:
14781: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14782: All arguments are optional. Returns a hash of a roles, either for
14783: co-author/assistant author roles for a user's Construction Space
14784: (default), or if $context is 'userroles', roles for the user himself,
14785: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14786: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14787: For each key, value is set to colon-separated start and end times for
14788: the role. If no username and domain are specified, will default to
14789: current user/domain. Types, roles, and roledoms are references to arrays
14790: of role statuses (active, future or previous), roles
14791: (e.g., cc,in, st etc.) and domains of the roles which can be used
14792: to restrict the list of roles reported. If no array ref is
14793: provided for types, will default to return only active roles.
14794:
14795: =item *
14796:
14797: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14798: user: $uname:$udom has a role in the course: $cdom_$cnum.
14799:
14800: Additional optional arguments are: $type (if role checking is to be restricted
14801: to certain user status types -- previous (expired roles), active (currently
14802: available roles) or future (roles available in the future), and
14803: $hideprivileged -- if true will not report course roles for users who
14804: have active Domain Coordinator role in course's domain or in additional
14805: domains (specified in 'Domains to check for privileged users' in course
14806: environment -- set via: Course Settings -> Classlists and staff listing).
14807:
14808: =item *
14809:
14810: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14811: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14812: $possdomains and $possroles are optional array refs -- to domains to check and
14813: roles to check. If $possdomains is not specified, a dump will be done of the
14814: users' roles.db to check for a dc or su role in any domain. This can be
14815: time consuming if &privileged is called repeatedly (e.g., when displaying a
14816: classlist), so in such cases, supplying a $possdomains array is preferred, as
14817: this then allows &privileged_by_domain() to be used, which caches the identity
14818: of privileged users, eliminating the need for repeated calls to &dump().
14819:
14820: =item *
14821:
14822: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14823: where the outer hash keys are domains specified in the $possdomains array ref,
14824: next inner hash keys are privileged roles specified in the $roles array ref,
14825: and the innermost hash contains key = value pairs for username:domain = end:start
14826: for active or future "privileged" users with that role in that domain. To avoid
14827: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14828: innerhash are cached using priv_$role and $dom as the identifiers.
14829:
14830: =back
14831:
14832: =head2 User Modification
14833:
14834: =over 4
14835:
14836: =item *
14837:
14838: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14839: user for the level given by URL. Optional start and end dates (leave empty
14840: string or zero for "no date")
14841:
14842: =item *
14843:
14844: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14845: change a users, password, possible return values are: ok,
14846: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14847: refused
14848:
14849: =item *
14850:
14851: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14852:
14853: =item *
14854:
14855: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14856: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14857:
14858: will update user information (firstname,middlename,lastname,generation,
14859: permanentemail), and if forceid is true, student/employee ID also.
14860: A user's institutional affiliation(s) can also be updated.
14861: User information fields will not be overwritten with empty entries
14862: unless the field is included in the $candelete array reference.
14863: This array is included when a single user is modified via "Manage Users",
14864: or when Autoupdate.pl is run by cron in a domain.
14865:
14866: =item *
14867:
14868: modifystudent
14869:
14870: modify a student's enrollment and identification information.
14871: The course id is resolved based on the current user's environment.
14872: This means the invoking user must be a course coordinator or otherwise
14873: associated with a course.
14874:
14875: This call is essentially a wrapper for lonnet::modifyuser and
14876: lonnet::modify_student_enrollment
14877:
14878: Inputs:
14879:
14880: =over 4
14881:
14882: =item B<$udom> Student's loncapa domain
14883:
14884: =item B<$uname> Student's loncapa login name
14885:
14886: =item B<$uid> Student/Employee ID
14887:
14888: =item B<$umode> Student's authentication mode
14889:
14890: =item B<$upass> Student's password
14891:
14892: =item B<$first> Student's first name
14893:
14894: =item B<$middle> Student's middle name
14895:
14896: =item B<$last> Student's last name
14897:
14898: =item B<$gene> Student's generation
14899:
14900: =item B<$usec> Student's section in course
14901:
14902: =item B<$end> Unix time of the roles expiration
14903:
14904: =item B<$start> Unix time of the roles start date
14905:
14906: =item B<$forceid> If defined, allow $uid to be changed
14907:
14908: =item B<$desiredhome> server to use as home server for student
14909:
14910: =item B<$email> Student's permanent e-mail address
14911:
14912: =item B<$type> Type of enrollment (auto or manual)
14913:
14914: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14915:
14916: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14917:
14918: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14919:
14920: =item B<$context> role change context (shown in User Management Logs display in a course)
14921:
14922: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14923:
14924: =item B<$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.
14925:
14926: =back
14927:
14928: =item *
14929:
14930: modify_student_enrollment
14931:
14932: Change a student's enrollment status in a class. The environment variable
14933: 'role.request.course' must be defined for this function to proceed.
14934:
14935: Inputs:
14936:
14937: =over 4
14938:
14939: =item $udom, student's domain
14940:
14941: =item $uname, student's name
14942:
14943: =item $uid, student's user id
14944:
14945: =item $first, student's first name
14946:
14947: =item $middle
14948:
14949: =item $last
14950:
14951: =item $gene
14952:
14953: =item $usec
14954:
14955: =item $end
14956:
14957: =item $start
14958:
14959: =item $type
14960:
14961: =item $locktype
14962:
14963: =item $cid
14964:
14965: =item $selfenroll
14966:
14967: =item $context
14968:
14969: =item $credits, number of credits student will earn from this class
14970:
14971: =item $instsec, institutional course section code for student
14972:
14973: =back
14974:
14975:
14976: =item *
14977:
14978: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
14979: custom role; give a custom role to a user for the level given by URL. Specify
14980: name and domain of role author, and role name
14981:
14982: =item *
14983:
14984: revokerole($udom,$uname,$url,$role) : revoke a role for url
14985:
14986: =item *
14987:
14988: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
14989:
14990: =back
14991:
14992: =head2 Course Infomation
14993:
14994: =over 4
14995:
14996: =item *
14997:
14998: coursedescription($courseid,$options) : returns a hash of information about the
14999: specified course id, including all environment settings for the
15000: course, the description of the course will be in the hash under the
15001: key 'description'
15002:
15003: $options is an optional parameter that if supplied is a hash reference that controls
15004: what how this function works. It has the following key/values:
15005:
15006: =over 4
15007:
15008: =item freshen_cache
15009:
15010: If defined, and the environment cache for the course is valid, it is
15011: returned in the returned hash.
15012:
15013: =item one_time
15014:
15015: If defined, the last cache time is set to _now_
15016:
15017: =item user
15018:
15019: If defined, the supplied username is used instead of the current user.
15020:
15021:
15022: =back
15023:
15024: =item *
15025:
15026: resdata($name,$domain,$type,@which) : request for current parameter
15027: setting for a specific $type, where $type is either 'course' or 'user',
15028: @what should be a list of parameters to ask about. This routine caches
15029: answers for 10 minutes.
15030:
15031: =item *
15032:
15033: get_courseresdata($courseid, $domain) : dump the entire course resource
15034: data base, returning a hash that is keyed by the resource name and has
15035: values that are the resource value. I believe that the timestamps and
15036: versions are also returned.
15037:
15038: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15039: supplemental content area. This routine caches the number of files for
15040: 10 minutes.
15041:
15042: =back
15043:
15044: =head2 Course Modification
15045:
15046: =over 4
15047:
15048: =item *
15049:
15050: writecoursepref($courseid,%prefs) : write preferences (environment
15051: database) for a course
15052:
15053: =item *
15054:
15055: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15056:
15057: =item *
15058:
15059: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15060:
15061: =item *
15062:
15063: is_course($courseid), is_course($cdom, $cnum)
15064:
15065: Accepts either a combined $courseid (in the form of domain_courseid) or the
15066: two component version $cdom, $cnum. It checks if the specified course exists.
15067:
15068: Returns:
15069: undef if the course doesn't exist, otherwise
15070: in scalar context the combined courseid.
15071: in list context the two components of the course identifier, domain and
15072: courseid.
15073:
15074: =back
15075:
15076: =head2 Resource Subroutines
15077:
15078: =over 4
15079:
15080: =item *
15081:
15082: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15083:
15084: =item *
15085:
15086: repcopy($filename) : subscribes to the requested file, and attempts to
15087: replicate from the owning library server, Might return
15088: 'unavailable', 'not_found', 'forbidden', 'ok', or
15089: 'bad_request', also attempts to grab the metadata for the
15090: resource. Expects the local filesystem pathname
15091: (/home/httpd/html/res/....)
15092:
15093: =back
15094:
15095: =head2 Resource Information
15096:
15097: =over 4
15098:
15099: =item *
15100:
15101: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15102: and returns the value of a variety of different possible values,
15103: $varname should be a request string, and the other parameters can be
15104: used to specify who and what one is asking about. Ordinarily, $cid
15105: does not need to be specified, as it is retrived from
15106: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15107: within lonuserstate::loadmap() when initializing a course, before
15108: $env{'request.course.id'} has been set, so it needs to be provided
15109: in that one case.
15110:
15111: Possible values for $varname are environment.lastname (or other item
15112: from the envirnment hash), user.name (or someother aspect about the
15113: user), resource.0.maxtries (or some other part and parameter of a
15114: resource)
15115:
15116: =item *
15117:
15118: directcondval($number) : get current value of a condition; reads from a state
15119: string
15120:
15121: =item *
15122:
15123: condval($condidx) : value of condition index based on state
15124:
15125: =item *
15126:
15127: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15128: resource's metadata, $what should be either a specific key, or either
15129: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15130: packages that this resource currently uses, the last 3 arguments are
15131: only used internally for recursive metadata.
15132:
15133: the toolsymb is only used where the uri is for an external tool (for which
15134: the uri as well as the symb are guaranteed to be unique).
15135:
15136: this function automatically caches all requests except any made recursively
15137: to retrieve a list of metadata keys for an imported library file ($liburi is
15138: defined).
15139:
15140: =item *
15141:
15142: metadata_query($query,$custom,$customshow) : make a metadata query against the
15143: network of library servers; returns file handle of where SQL and regex results
15144: will be stored for query
15145:
15146: =item *
15147:
15148: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15149: return symbolic list entry (all arguments optional).
15150:
15151: Args: filename is the filename (including path) for the file for which a symb
15152: is required; donotrecurse, if true will prevent calls to allowed() being made
15153: to check access status if more than one resource was found in the bighash
15154: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15155: a randompick); ignorecachednull, if true will prevent a symb of '' being
15156: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15157: cause possible symbs to be checked to determine if they are subject to content
15158: blocking, if so they will not be included as possible symbs; possibles is a
15159: ref to a hash, which, as a side effect, will be populated with all possible
15160: symbs (content blocking not tested).
15161:
15162: returns the data handle
15163:
15164: =item *
15165:
15166: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15167: and is a possible symb for the URL in $thisfn, and if is an encrypted
15168: resource that the user accessed using /enc/ returns a 1 on success, 0
15169: on failure, user must be in a course, as it assumes the existence of
15170: the course initial hash, and uses $env('request.course.id'}. The third
15171: arg is an optional reference to a scalar. If this arg is passed in the
15172: call to symbverify, it will be set to 1 if the symb has been set to be
15173: encrypted; otherwise it will be null.
15174:
15175: =item *
15176:
15177: symbclean($symb) : removes versions numbers from a symb, returns the
15178: cleaned symb
15179:
15180: =item *
15181:
15182: is_on_map($uri) : checks if the $uri is somewhere on the current
15183: course map, user must be in a course for it to work.
15184:
15185: =item *
15186:
15187: numval($salt) : return random seed value (addend for rndseed)
15188:
15189: =item *
15190:
15191: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15192: a random seed, all arguments are optional, if they aren't sent it uses the
15193: environment to derive them. Note: if symb isn't sent and it can't get one
15194: from &symbread it will use the current time as its return value
15195:
15196: =item *
15197:
15198: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15199: unfakeable, receipt
15200:
15201: =item *
15202:
15203: receipt() : API to ireceipt working off of env values; given out to users
15204:
15205: =item *
15206:
15207: countacc($url) : count the number of accesses to a given URL
15208:
15209: =item *
15210:
15211: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15212:
15213: =item *
15214:
15215: checkin($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 $tcrsid)
15216:
15217: =item *
15218:
15219: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15220:
15221: =item *
15222:
15223: devalidate($symb) : devalidate temporary spreadsheet calculations,
15224: forcing spreadsheet to reevaluate the resource scores next time.
15225:
15226: =item *
15227:
15228: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15229: when viewing in course context.
15230:
15231: input: six args -- filename (decluttered), course number, course domain,
15232: url, symb (if registered) and group (if this is a
15233: group item -- e.g., bulletin board, group page etc.).
15234:
15235: output: array of five scalars --
15236: $cfile -- url for file editing if editable on current server
15237: $home -- homeserver of resource (i.e., for author if published,
15238: or course if uploaded.).
15239: $switchserver -- 1 if server switch will be needed.
15240: $forceedit -- 1 if icon/link should be to go to edit mode
15241: $forceview -- 1 if icon/link should be to go to view mode
15242:
15243: =item *
15244:
15245: is_course_upload($file,$cnum,$cdom)
15246:
15247: Used in course context to determine if current file was uploaded to
15248: the course (i.e., would be found in /userfiles/docs on the course's
15249: homeserver.
15250:
15251: input: 3 args -- filename (decluttered), course number and course domain.
15252: output: boolean -- 1 if file was uploaded.
15253:
15254: =back
15255:
15256: =head2 Storing/Retreiving Data
15257:
15258: =over 4
15259:
15260: =item *
15261:
15262: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15263: permanently for this url; hashref needs to be given and should be a \%hashname;
15264: the remaining args aren't required and if they aren't passed or are '' they will
15265: be derived from the env (with the exception of $laststore, which is an
15266: optional arg used when a user's submission is stored in grading).
15267: $laststore is $version=$timestamp, where $version is the most recent version
15268: number retrieved for the corresponding $symb in the $namespace db file, and
15269: $timestamp is the timestamp for that transaction (UNIX time).
15270: $laststore is currently only passed when cstore() is called by
15271: structuretags::finalize_storage().
15272:
15273: =item *
15274:
15275: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15276: but uses critical subroutine
15277:
15278: =item *
15279:
15280: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15281: all args are optional
15282:
15283: =item *
15284:
15285: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15286: dumps the complete (or key matching regexp) namespace into a hash
15287: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15288: normally &store()ed into
15289:
15290: $range should be either an integer '100' (give me the first 100
15291: matching records)
15292: or be two integers sperated by a - with no spaces
15293: '30-50' (give me the 30th through the 50th matching
15294: records)
15295:
15296:
15297: =item *
15298:
15299: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15300: replaces a &store() version of data with a replacement set of data
15301: for a particular resource in a namespace passed in the $storehash hash
15302: reference. If $tolog is true, the transaction is logged in the courselog
15303: with an action=PUTSTORE.
15304:
15305: =item *
15306:
15307: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15308: works very similar to store/cstore, but all data is stored in a
15309: temporary location and can be reset using tmpreset, $storehash should
15310: be a hash reference, returns nothing on success
15311:
15312: =item *
15313:
15314: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15315: similar to restore, but all data is stored in a temporary location and
15316: can be reset using tmpreset. Returns a hash of values on success,
15317: error string otherwise.
15318:
15319: =item *
15320:
15321: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15322: deltes all keys for $symb form the temporary storage hash.
15323:
15324: =item *
15325:
15326: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15327: reference filled in from namesp ($udom and $uname are optional)
15328:
15329: =item *
15330:
15331: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15332: namesp ($udom and $uname are optional)
15333:
15334: =item *
15335:
15336: dump($namespace,$udom,$uname,$regexp,$range) :
15337: dumps the complete (or key matching regexp) namespace into a hash
15338: ($udom, $uname, $regexp, $range are optional)
15339:
15340: $range should be either an integer '100' (give me the first 100
15341: matching records)
15342: or be two integers sperated by a - with no spaces
15343: '30-50' (give me the 30th through the 50th matching
15344: records)
15345: =item *
15346:
15347: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15348: $store can be a scalar, an array reference, or if the amount to be
15349: incremented is > 1, a hash reference.
15350:
15351: ($udom and $uname are optional)
15352:
15353: =item *
15354:
15355: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15356: ($udom and $uname are optional)
15357:
15358: =item *
15359:
15360: cput($namespace,$storehash,$udom,$uname) : critical put
15361: ($udom and $uname are optional)
15362:
15363: =item *
15364:
15365: newput($namespace,$storehash,$udom,$uname) :
15366:
15367: Attempts to store the items in the $storehash, but only if they don't
15368: currently exist, if this succeeds you can be certain that you have
15369: successfully created a new key value pair in the $namespace db.
15370:
15371:
15372: Args:
15373: $namespace: name of database to store values to
15374: $storehash: hashref to store to the db
15375: $udom: (optional) domain of user containing the db
15376: $uname: (optional) name of user caontaining the db
15377:
15378: Returns:
15379: 'ok' -> succeeded in storing all keys of $storehash
15380: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15381: least <key> already existed in the db (other
15382: requested keys may also already exist)
15383: 'error: <msg>' -> unable to tie the DB or other error occurred
15384: 'con_lost' -> unable to contact request server
15385: 'refused' -> action was not allowed by remote machine
15386:
15387:
15388: =item *
15389:
15390: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15391: reference filled in from namesp (encrypts the return communication)
15392: ($udom and $uname are optional)
15393:
15394: =item *
15395:
15396: log($udom,$name,$home,$message) : write to permanent log for user; use
15397: critical subroutine
15398:
15399: =item *
15400:
15401: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
15402: array reference filled in from namespace found in domain level on either
15403: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
15404:
15405: =item *
15406:
15407: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
15408: domain level either on specified domain server ($uhome) or primary domain
15409: server ($udom and $uhome are optional)
15410:
15411: =item *
15412:
15413: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
15414: for: authentication, language, quotas, timezone, date locale, and portal URL in
15415: the target domain.
15416:
15417: May also include additional key => value pairs for the following groups:
15418:
15419: =over
15420:
15421: =item
15422: disk quotas (MB allocated by default to portfolios and authoring spaces).
15423:
15424: =over
15425:
15426: =item defaultquota, authorquota
15427:
15428: =back
15429:
15430: =item
15431: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
15432: portfolio for users).
15433:
15434: =over
15435:
15436: =item
15437: aboutme, blog, webdav, portfolio
15438:
15439: =back
15440:
15441: =item
15442: requestcourses: ability to request courses, and how requests are processed.
15443:
15444: =over
15445:
15446: =item
15447: official, unofficial, community, textbook, placement
15448:
15449: =back
15450:
15451: =item
15452: inststatus: types of institutional affiliation, and order in which they are displayed.
15453:
15454: =over
15455:
15456: =item
15457: inststatustypes, inststatusorder, inststatusguest
15458:
15459: =back
15460:
15461: =item
15462: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
15463: for course's uploaded content.
15464:
15465: =over
15466:
15467: =item
15468: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
15469: communityquota, textbookquota, placementquota
15470:
15471: =back
15472:
15473: =item
15474: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
15475: on your servers.
15476:
15477: =over
15478:
15479: =item
15480: remotesessions, hostedsessions
15481:
15482: =back
15483:
15484: =back
15485:
15486: In cases where a domain coordinator has never used the "Set Domain Configuration"
15487: utility to create a configuration.db file on a domain's primary library server
15488: only the following domain defaults: auth_def, auth_arg_def, lang_def
15489: -- corresponding values are authentication type (internal, krb4, krb5,
15490: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
15491: will be available. Values are retrieved from cache (if current), unless the
15492: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
15493: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
15494:
15495: Typical usage:
15496:
15497: %domdefaults = &get_domain_defaults($target_domain);
15498:
15499: =back
15500:
15501: =head2 Network Status Functions
15502:
15503: =over 4
15504:
15505: =item *
15506:
15507: dirlist() : return directory list based on URI (first arg).
15508:
15509: Inputs: 1 required, 5 optional.
15510:
15511: =over
15512:
15513: =item
15514: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
15515:
15516: =item
15517: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
15518:
15519: =item
15520: $username - username of user/course to be listed. Extracted from $uri if absent.
15521:
15522: =item
15523: $getpropath - boolean: 1 if prepend path using &propath().
15524:
15525: =item
15526: $getuserdir - boolean: 1 if prepend path for "userfiles".
15527:
15528: =item
15529: $alternateRoot - path to prepend in place of path from $uri.
15530:
15531: =back
15532:
15533: Returns: Array of up to two items.
15534:
15535: =over
15536:
15537: a reference to an array of files/subdirectories
15538:
15539: =over
15540:
15541: Each element in the array of files/subdirectories is a & separated list of
15542: item name and the result of running stat on the item. If dirlist was requested
15543: for a file instead of a directory, the item name will be ''. For a directory
15544: listing, if the item is a metadata file, the element will end &N&M
15545: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
15546: default copyright set (1).
15547:
15548: =back
15549:
15550: a scalar containing error condition (if encountered).
15551:
15552: =over
15553:
15554: =item
15555: no_host (no homeserver identified for $username:$domain).
15556:
15557: =item
15558: no_such_host (server contacted for listing not identified as valid host).
15559:
15560: =item
15561: con_lost (connection to remote server failed).
15562:
15563: =item
15564: refused (invalid $username:$domain received on lond side).
15565:
15566: =item
15567: no_such_dir (directory at specified path on lond side does not exist).
15568:
15569: =item
15570: empty (directory at specified path on lond side is empty).
15571:
15572: =over
15573:
15574: This is currently not encountered because the &ls3, &ls2,
15575: &ls (_handler) routines on the lond side do not filter out
15576: . and .. from a directory listing.
15577:
15578: =back
15579:
15580: =back
15581:
15582: =back
15583:
15584: =item *
15585:
15586: spareserver() : find server with least workload from spare.tab
15587:
15588:
15589: =item *
15590:
15591: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
15592: if there is no corresponding loncapa host.
15593:
15594: =back
15595:
15596:
15597: =head2 Apache Request
15598:
15599: =over 4
15600:
15601: =item *
15602:
15603: ssi($url,%hash) : server side include, does a complete request cycle on url to
15604: localhost, posts hash
15605:
15606: =back
15607:
15608: =head2 Data to String to Data
15609:
15610: =over 4
15611:
15612: =item *
15613:
15614: hash2str(%hash) : convert a hash into a string complete with escaping and '='
15615: and '&' separators, supports elements that are arrayrefs and hashrefs
15616:
15617: =item *
15618:
15619: hashref2str($hashref) : convert a hashref into a string complete with
15620: escaping and '=' and '&' separators, supports elements that are
15621: arrayrefs and hashrefs
15622:
15623: =item *
15624:
15625: arrayref2str($arrayref) : convert an arrayref into a string complete
15626: with escaping and '&' separators, supports elements that are arrayrefs
15627: and hashrefs
15628:
15629: =item *
15630:
15631: str2hash($string) : convert string to hash using unescaping and
15632: splitting on '=' and '&', supports elements that are arrayrefs and
15633: hashrefs
15634:
15635: =item *
15636:
15637: str2array($string) : convert string to hash using unescaping and
15638: splitting on '&', supports elements that are arrayrefs and hashrefs
15639:
15640: =back
15641:
15642: =head2 Logging Routines
15643:
15644:
15645: These routines allow one to make log messages in the lonnet.log and
15646: lonnet.perm logfiles.
15647:
15648: =over 4
15649:
15650: =item *
15651:
15652: logtouch() : make sure the logfile, lonnet.log, exists
15653:
15654: =item *
15655:
15656: logthis() : append message to the normal lonnet.log file, it gets
15657: preiodically rolled over and deleted.
15658:
15659: =item *
15660:
15661: logperm() : append a permanent message to lonnet.perm.log, this log
15662: file never gets deleted by any automated portion of the system, only
15663: messages of critical importance should go in here.
15664:
15665:
15666: =back
15667:
15668: =head2 General File Helper Routines
15669:
15670: =over 4
15671:
15672: =item *
15673:
15674: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
15675: (a) files in /uploaded
15676: (i) If a local copy of the file exists -
15677: compares modification date of local copy with last-modified date for
15678: definitive version stored on home server for course. If local copy is
15679: stale, requests a new version from the home server and stores it.
15680: If the original has been removed from the home server, then local copy
15681: is unlinked.
15682: (ii) If local copy does not exist -
15683: requests the file from the home server and stores it.
15684:
15685: If $caller is 'uploadrep':
15686: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
15687: for request for files originally uploaded via DOCS.
15688: - returns 'ok' if fresh local copy now available, -1 otherwise.
15689:
15690: Otherwise:
15691: This indicates a call from the content generation phase of the request.
15692: - returns the entire contents of the file or -1.
15693:
15694: (b) files in /res
15695: - returns the entire contents of a file or -1;
15696: it properly subscribes to and replicates the file if neccessary.
15697:
15698:
15699: =item *
15700:
15701: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
15702: reference
15703:
15704: returns either a stat() list of data about the file or an empty list
15705: if the file doesn't exist or couldn't find out about it (connection
15706: problems or user unknown)
15707:
15708: =item *
15709:
15710: filelocation($dir,$file) : returns file system location of a file
15711: based on URI; meant to be "fairly clean" absolute reference, $dir is a
15712: directory that relative $file lookups are to looked in ($dir of /a/dir
15713: and a file of ../bob will become /a/bob)
15714:
15715: =item *
15716:
15717: hreflocation($dir,$file) : returns file system location or a URL; same as
15718: filelocation except for hrefs
15719:
15720: =item *
15721:
15722: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
15723: also removes beginning /home/httpd/html unless /priv/ follows it.
15724:
15725: =back
15726:
15727: =head2 Usererfile file routines (/uploaded*)
15728:
15729: =over 4
15730:
15731: =item *
15732:
15733: userfileupload(): main rotine for putting a file in a user or course's
15734: filespace, arguments are,
15735:
15736: formname - required - this is the name of the element in $env where the
15737: filename, and the contents of the file to create/modifed exist
15738: the filename is in $env{'form.'.$formname.'.filename'} and the
15739: contents of the file is located in $env{'form.'.$formname}
15740: context - if coursedoc, store the file in the course of the active role
15741: of the current user;
15742: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
15743: if 'canceloverwrite': delete file in tmp/overwrites directory
15744: subdir - required - subdirectory to put the file in under ../userfiles/
15745: if undefined, it will be placed in "unknown"
15746:
15747: (This routine calls clean_filename() to remove any dangerous
15748: characters from the filename, and then calls finuserfileupload() to
15749: complete the transaction)
15750:
15751: returns either the url of the uploaded file (/uploaded/....) if successful
15752: and /adm/notfound.html if unsuccessful
15753:
15754: =item *
15755:
15756: clean_filename(): routine for cleaing a filename up for storage in
15757: userfile space, argument is:
15758:
15759: filename - proposed filename
15760:
15761: returns: the new clean filename
15762:
15763: =item *
15764:
15765: finishuserfileupload(): routine that creates and sends the file to
15766: userspace, probably shouldn't be called directly
15767:
15768: docuname: username or courseid of destination for the file
15769: docudom: domain of user/course of destination for the file
15770: formname: same as for userfileupload()
15771: fname: filename (including subdirectories) for the file
15772: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15773: allfiles: reference to hash used to store objects found by parser
15774: codebase: reference to hash used for codebases of java objects found by parser
15775: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15776: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15777: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15778: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15779: context: if 'overwrite', will move the uploaded file from its temporary location to
15780: userfiles to facilitate overwriting a previously uploaded file with same name.
15781: mimetype: reference to scalar to accommodate mime type determined
15782: from File::MMagic if $parser = parse.
15783:
15784: returns either the url of the uploaded file (/uploaded/....) if successful
15785: and /adm/notfound.html if unsuccessful (or an error message if context
15786: was 'overwrite').
15787:
15788:
15789: =item *
15790:
15791: renameuserfile(): renames an existing userfile to a new name
15792:
15793: Args:
15794: docuname: username or courseid of destination for the file
15795: docudom: domain of user/course of destination for the file
15796: old: current file name (including any subdirs under userfiles)
15797: new: desired file name (including any subdirs under userfiles)
15798:
15799: =item *
15800:
15801: mkdiruserfile(): creates a directory is a userfiles dir
15802:
15803: Args:
15804: docuname: username or courseid of destination for the file
15805: docudom: domain of user/course of destination for the file
15806: dir: dir to create (including any subdirs under userfiles)
15807:
15808: =item *
15809:
15810: removeuserfile(): removes a file that exists in userfiles
15811:
15812: Args:
15813: docuname: username or courseid of destination for the file
15814: docudom: domain of user/course of destination for the file
15815: fname: filname to delete (including any subdirs under userfiles)
15816:
15817: =item *
15818:
15819: removeuploadedurl(): convience function for removeuserfile()
15820:
15821: Args:
15822: url: a full /uploaded/... url to delete
15823:
15824: =item *
15825:
15826: get_portfile_permissions():
15827: Args:
15828: domain: domain of user or course contain the portfolio files
15829: user: name of user or num of course contain the portfolio files
15830: Returns:
15831: hashref of a dump of the proper file_permissions.db
15832:
15833:
15834: =item *
15835:
15836: get_access_controls():
15837:
15838: Args:
15839: current_permissions: the hash ref returned from get_portfile_permissions()
15840: group: (optional) the group you want the files associated with
15841: file: (optional) the file you want access info on
15842:
15843: Returns:
15844: a hash (keys are file names) of hashes containing
15845: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15846: values are XML containing access control settings (see below)
15847:
15848: Internal notes:
15849:
15850: access controls are stored in file_permissions.db as key=value pairs.
15851: key -> path to file/file_name\0uniqueID:scope_end_start
15852: where scope -> public,guest,course,group,domains or users.
15853: end -> UNIX time for end of access (0 -> no end date)
15854: start -> UNIX time for start of access
15855:
15856: value -> XML description of access control
15857: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15858: <start></start>
15859: <end></end>
15860:
15861: <password></password> for scope type = guest
15862:
15863: <domain></domain> for scope type = course or group
15864: <number></number>
15865: <roles id="">
15866: <role></role>
15867: <access></access>
15868: <section></section>
15869: <group></group>
15870: </roles>
15871:
15872: <dom></dom> for scope type = domains
15873:
15874: <users> for scope type = users
15875: <user>
15876: <uname></uname>
15877: <udom></udom>
15878: </user>
15879: </users>
15880: </scope>
15881:
15882: Access data is also aggregated for each file in an additional key=value pair:
15883: key -> path to file/file_name\0accesscontrol
15884: value -> reference to hash
15885: hash contains key = value pairs
15886: where key = uniqueID:scope_end_start
15887: value = UNIX time record was last updated
15888:
15889: Used to improve speed of look-ups of access controls for each file.
15890:
15891: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15892:
15893: =item *
15894:
15895: modify_access_controls():
15896:
15897: Modifies access controls for a portfolio file
15898: Args
15899: 1. file name
15900: 2. reference to hash of required changes,
15901: 3. domain
15902: 4. username
15903: where domain,username are the domain of the portfolio owner
15904: (either a user or a course)
15905:
15906: Returns:
15907: 1. result of additions or updates ('ok' or 'error', with error message).
15908: 2. result of deletions ('ok' or 'error', with error message).
15909: 3. reference to hash of any new or updated access controls.
15910: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15911: key = integer (inbound ID)
15912: value = uniqueID
15913:
15914: =item *
15915:
15916: get_timebased_id():
15917:
15918: Attempts to get a unique timestamp-based suffix for use with items added to a
15919: course via the Course Editor (e.g., folders, composite pages,
15920: group bulletin boards).
15921:
15922: Args: (first three required; six others optional)
15923:
15924: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15925: docssequence, or name of group
15926:
15927: 2. keyid (alphanumeric): name of temporary locking key in hash,
15928: e.g., num, boardids
15929:
15930: 3. namespace: name of gdbm file used to store suffixes already assigned;
15931: file will be named nohist_namespace.db
15932:
15933: 4. cdom: domain of course; default is current course domain from %env
15934:
15935: 5. cnum: course number; default is current course number from %env
15936:
15937: 6. idtype: set to concat if an additional digit is to be appended to the
15938: unix timestamp to form the suffix, if the plain timestamp is already
15939: in use. Default is to not do this, but simply increment the unix
15940: timestamp by 1 until a unique key is obtained.
15941:
15942: 7. who: holder of locking key; defaults to user:domain for user.
15943:
15944: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
15945: retrying); default is 3.
15946:
15947: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
15948:
15949: Returns:
15950:
15951: 1. suffix obtained (numeric)
15952:
15953: 2. result of deleting locking key (ok if deleted, or lock never obtained)
15954:
15955: 3. error: contains (localized) error message if an error occurred.
15956:
15957:
15958: =back
15959:
15960: =head2 HTTP Helper Routines
15961:
15962: =over 4
15963:
15964: =item *
15965:
15966: escape() : unpack non-word characters into CGI-compatible hex codes
15967:
15968: =item *
15969:
15970: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
15971:
15972: =back
15973:
15974: =head1 PRIVATE SUBROUTINES
15975:
15976: =head2 Underlying communication routines (Shouldn't call)
15977:
15978: =over 4
15979:
15980: =item *
15981:
15982: subreply() : tries to pass a message to lonc, returns con_lost if incapable
15983:
15984: =item *
15985:
15986: reply() : uses subreply to send a message to remote machine, logs all failures
15987:
15988: =item *
15989:
15990: critical() : passes a critical message to another server; if cannot
15991: get through then place message in connection buffer directory and
15992: returns con_delayed, if incapable of saving message, returns
15993: con_failed
15994:
15995: =item *
15996:
15997: reconlonc() : tries to reconnect lonc client processes.
15998:
15999: =back
16000:
16001: =head2 Resource Access Logging
16002:
16003: =over 4
16004:
16005: =item *
16006:
16007: flushcourselogs() : flush (save) buffer logs and access logs
16008:
16009: =item *
16010:
16011: courselog($what) : save message for course in hash
16012:
16013: =item *
16014:
16015: courseacclog($what) : save message for course using &courselog(). Perform
16016: special processing for specific resource types (problems, exams, quizzes, etc).
16017:
16018: =item *
16019:
16020: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16021: as a PerlChildExitHandler
16022:
16023: =back
16024:
16025: =head2 Other
16026:
16027: =over 4
16028:
16029: =item *
16030:
16031: symblist($mapname,%newhash) : update symbolic storage links
16032:
16033: =back
16034:
16035: =cut
16036:
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